Macro Level Analysis: The evolution of the System with Time¶

In the first part of the analysis we will focus on how the global capabilities change with time.

Let's start by importing all of the external libraries that will be useful during the analysis.

In [1]:
# python libraries
from py2neo import Graph
import numpy as np
from pandas import DataFrame
import itertools
import matplotlib.pyplot as plt
import seaborn as sns
import json
import math
import pandas as pd
import plotly
import plotly.graph_objs as go
import qgrid
from scipy import stats, spatial
from sklearn.cluster.bicluster import SpectralBiclustering
import operator
from IPython.display import display, HTML
from matplotlib.colors import ListedColormap

# connection to Neo4j
local_connection_url = "http://localhost:7474"
connection_to_graph = Graph(local_connection_url)

# plotly credentials


Total database matrix¶

We start by geeting all the feedstock, processing technology and output terms.

In [2]:
f_terms = list(set(DataFrame(connection_to_graph.data('MATCH (a:Asset)-[:CONTAINS]->(fs:Feedstock) RETURN  fs.term, count(a)')).as_matrix()[:, 1]))
o_terms = list(set(DataFrame(connection_to_graph.data('MATCH (a:Asset)-[:CONTAINS]->(fs:Output) RETURN  fs.term, count(a)')).as_matrix()[:, 1]))
pt_terms = list(set(DataFrame(connection_to_graph.data('MATCH (a:Asset)-[:CONTAINS]->(fs:ProcessingTech) RETURN  fs.term, count(a)')).as_matrix()[:, 1]))
bbo = list(f_terms + pt_terms + o_terms)
print 'Number of terms:', len(bbo)
axis_names = bbo
print axis_names

Number of terms: 352
[u'vegetable oil', u'recycled ethanol', u'woodwaste/bagasse', u'natural gas', u'various grasses', u'nonedible oils', u'animal fats', u'paper', u'ponderosa pine', u'grass seed', u'milo', u'osb', u'paper waste', u'corn cob', u'logging residues', u'willow', u'crop waste', u'firewood', u'jatropha', u'sugarcane bagasse', u'sugar', u'durum', u'wood', u'municipal solid waste', u'banna grass', u'waste oil', u'cassava pulp', u'barley', u'mixed oilseeds', u'wood fuel', u'starch', u'white grease', u'coniferous wood', u'corn oil', u'cellulosic sugars', u'vegetable waste', u'corn stalks', u'yellow grease', u'molasses', u'hybrid poplar', u'food waste', u'citrus residues', u'wood chips', u'spent sulphite liquor feedstock', u'palm, rapeseed oil, waste fat', u'cotton residue', u'industrial waste', u'deciduous forests', u'corn stover', u'cereals/sugar', u'waste fat', u'waste vegetable oil', u'tallow', u'sewage', u'poultry fat', u'grain', u'poplar/energy woods', u'biogas from municipal wastewater treatment facility digesters', u'loblolly pine', u'stump material', u'husk', u'palm', u'sulfite spent liquor from spruce wood pulping', u'switchgrass', u'bark', u'fall rye', u'agriculture', u'textiles', u'animal waste', u'cobs', u'forest residues', u'grass clippings', u'fog', u'plywood', u'dry biomass', u'southern yellow pine', u'trap grease', u'beef tallow', u'syngas from gasifier', u'animal manure', u'wheat', u'organic waste', u'oil plants', u'corn', u'cellulose', u'dung', u'agricultural waste', u'elephant grass', u'rice straw', u'biogas from landfills', u'mixed grass', u'waste water sludge', u'poppy seed', u'algae', u'soft white spring wheat', u'barley straw', u'Giant reed', u'rice hulls', u'canola oil', u'msw', u'digester gas', u'seeds', u'mixed prairie grass', u'fat products', u'distillers grain', u'woody and agricultural by-products', u'sugar beet', u'mixed biomass', u'corn stover, cobs', u'brewery waste', u'camelina', u'cellulosic biomass', u'multi feedstock', u'plastics', u'palm stearin', u'white pine', u'straw', u'water hyacinth', u'mixedwood', u'hogs', u'beverage waste', u'corn sugar', u'sugar base', u'soy', u'woody biomass', u'maple', u'wheat straw', u'jathropa', u'medium density fiberboard', u'biodegradable waste', u'macroalgae', u'hardwood', u'feed wheat', u'waste', u'soy oil', u'hog fuel', u'pal waste', u'grass straw and corn stalks', u'eucalyptus', u'agricultural biomass', u'glycerin', u'used cooking oil', u'hydrous ethanol', u'seed oil', u'shrub willow', u'juncea oil', u'grains', u'syngas', u'barley starch', u'particle board', u'energy crops', u'slash pine', u'lumber', u'oilseeds', u'Decommissioned electricity poles and railway ties', u'miscanthus', u'agricultural residues', u'grass', u'sorghum', u'virgin oil', u'cps wheat', u'rapeseed oil', u'cooking oil', u'natural fats', u'red pine', u'radiate pine', u'cheese whey', u'manure', u'corn/barley', u'free fatty acid', u'animal residue', u'yard trimmings', u'stover', u'biogenic waste oils', u'triticale', u'bagasse/cane trash', u'mixed cellulose', u'crude glycerine', u'brown grease', u'waste water', u'garden waste', u'wood processing residues', u'yeast', u'oak', u'pine', u'douglas fir', u'forestry', u'bagasse', u'rice straw, corn stalks', u'steel waste gas (co)', u'energy grasses', u'whey', u'lignocellulosics', u'wood waste', u'juniper', u'mixed biomass, natural gas', u'sugarcane', u'urban wood', u'flaxseed oil', u'residues', u'cotton gin trash', u'rapeseed', u'arundo donax', u'dedicated energy crops', u'black liquor', u'non-food grade canola oil', u'corn/milo', u'beets', u'lemna', u'sugarcane trash', u'refined vegetable oil', u'poplar', u'palm oil', u'sawdust', u'blend', u'non-cellulosic portions of sfw', u'woodchips', u'algae transesterification', u'hydrochloric acid', u'landfill gas', u'consolidated bioprocessing', u'methane recovery', u'hydroprocessing', u'solar conversion', u'biomass combustion', u'gasification', u'enzymatic hydrolysis', u'biogas productions', u'chemprocessing', u'oil extraction', u'bioenergy generation', u'coking', u'orc process', u'scrubbers', u'cbp', u'microwave', u'btl - syngas', u'bioforming', u'algal oil extraction', u'blg', u'methanol synthesis, mtg catalysis', u'biomass gasification', u'black liquor gasification', u'grate furnaces', u'algae burning/transesterifcation', u'steam reform/ft', u'biochemical conversions', u'catalysis', u'alcoholic fermentation', u'fixed bed gasifiers', u'fischer-tropsch', u'hydrotreating', u'transesterification', u'algae oil extraction', u'gas cleaning', u'pyrolysis oil', u'algae fermentation', u'fast pyrolysis', u'charring', u'tbd', u'advanced fermentation', u'acid hydrolysis', u'ft microchannel reactor', u'plant cell culture', u' aerobic digestion', u'pyrolysis', u'liquefaction', u'gasification-fermentation', u'hydrolysis', u'algae oil hydrotreating', u'solvents', u'pressing', u'metathesis', u'thermochemical conversions', u'fluidized bed furnaces', u' anaerobic digestion', u'ti gasification', u'fermentation', u'renewable liquefied natural gas', u'furanics', u'biodme', u'chems', u'cellulosic heating oil', u'chems, fibers', u'succinic acid', u'syng', u'succinic acid, polylutylene succinate', u'nutriceuticals', u'ethanol blending', u'succinic acid/ bdo', u'pellets', u'cellulosic naphtha', u'drop-in fuels', u'bioresin', u'adipic acid', u'bioplastic', u'biobutanol', u'ester renewable diesel', u'eth from bagasse', u'renewable compressed natural gas', u'renewable jet', u'methanol/then ethanol', u'renewable electricity', u'renewable diesel', u'renewable gasoline', u'celleth from bagasse', u'methanol', u'biogas', u'lpg', u'cellulosic ethanol', u'pla from cassava', u'biodieseliesel', u'gasoline', u'butanol', u'renewable heating oil', u'biopolymers', u'advanced biofuel', u'biofene', u'bio-oil', u'naphtha', u'biofuels from algae', u'biogasoline', u'cellulosic renewable gasoline', u'electricity from biomass', u'biodiesel', u'cellulosic biofuel', u'cellulosic renewable gasoline blendstock', u'sng', u'celleth from wheat straw', u'bioplymers from corn, potatoes, tapioca', u'ethanolanol', u'renewable chemicals', u'ethanol', u'cellulosic diesel', u'biodiesel bioethanol', u'papaya to fatty acids', u'rdif', u'polyethylene', u'bioethanol', u'biofuels for transport', u'mixed alcohol fuels', u'renewable jet fuel', u'biodiesel blending', u'renewable fuel', u'pdo', u'biobdo', u'bdo', u'renewable diesel from animal fats, veggie oils', u'renewable oils', u'fatty acid ethyl ester', u'bioieselethanolanol', u'biomass-based diesel']

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:1: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:2: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:3: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.



We create a function that return the capability matrix of the whole database.

In [3]:
def get_total_matrix(normalization):

# define queries
# non intersecting part
q1 =         """
MATCH (a:Asset)-[:CONTAINS]->(fs:Feedstock)
MATCH (a:Asset)-[:CONTAINS]->(out:Output)
MATCH (a:Asset)-[:CONTAINS]->(pt:ProcessingTech)
RETURN fs.term, pt.term, out.term, count(a)
"""

process_variables = ['Feedstock', 'Output', 'ProcessingTech']

# interesecting part
q2 =        """
MATCH (a:Asset)-[:CONTAINS]->(fs:{})
MATCH (a:Asset)-[:CONTAINS]->(t:{})
WHERE fs<>t
RETURN fs.term, t.term, count(a)
"""
# total assets of year
q3 =        """
MATCH (n:Asset)
RETURN count(n)
"""

# treat incoming data
total_documents = DataFrame(connection_to_graph.data(q3)).as_matrix()[0][0]

# get data
data_q1 = DataFrame(connection_to_graph.data(q1)).as_matrix()

# create matrix
total_matrix = np.zeros([len(axis_names), len(axis_names)])

# for no intersections data
for row in data_q1:
# the last column is the frequency (count)
frequency = row[0]
indexes = [axis_names.index(element) for element in row[1::]]
# add frequency value to matrix position not inter
for pair in itertools.combinations(indexes, 2):
total_matrix[pair[0], pair[1]] += frequency
total_matrix[pair[1], pair[0]] += frequency

# for intersecting data
for category in process_variables:
process_data = DataFrame(connection_to_graph.data(q2.format(category, category))).as_matrix()
for row in process_data:
frequency = row[0]
indexes = [axis_names.index(element) for element in row[1::]]
# add frequency value to matrix position inter
for pair in itertools.combinations(indexes, 2):
total_matrix[pair[0], pair[1]] += frequency / 2 # Divided by two because query not optimized
total_matrix[pair[1], pair[0]] += frequency / 2 # Divided by two because query not optimized

# normalize
norm_total_matrix = total_matrix  / total_documents

# dynamic return
if normalization == True:
return norm_total_matrix
else:


Let us visualize the normalized and non normalized versions.

We create a function that gives borders to our graphs.

In [4]:
def borders(width, color, size=get_total_matrix(normalization=False).shape[1]):
plt.axhline(y=0, color='k',linewidth=width)
plt.axhline(y=size, color=color,linewidth=width)
plt.axvline(x=0, color='k',linewidth=width)
plt.axvline(x=size, color=color,linewidth=width)

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:28: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:31: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:48: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.



And we plot.

In [5]:
## call functions
colors = 'binary'

year_in_focus = 2016
# create a subplot
plt.subplots(2,1,figsize=(17,17))

# first heatmap
plt.subplot(121)
vmax = 1000
sns.heatmap(get_total_matrix(normalization=False) , cmap=colors,  cbar=True,cbar_kws={"shrink": .2}, square=True, xticklabels=False, yticklabels=False, vmax=vmax)
borders(1.5, 'k')
plt.title('Capability Matrix Absolute')

# second heatmap
plt.subplot(122)
vmax = 0.1
sns.heatmap(get_total_matrix(normalization=True) , cmap=colors,  cbar=True,cbar_kws={"shrink": .2}, square=True, xticklabels=False, yticklabels=False, vmax=vmax)
borders(1.5, 'k')
plt.title('Capability Matrix Normalized')
plt.show()

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:28: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:31: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:48: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.



Total database matrix: clustered¶

In [6]:
whole_database = get_total_matrix(normalization=True)
a = sns.clustermap(whole_database,  figsize=(12, 12), xticklabels = False, yticklabels=False, cmap='binary', square=True)
borders(1.5, 'k')
plt.show()

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:28: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:31: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:48: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/seaborn/matrix.py:603: ClusterWarning:

scipy.cluster: The symmetric non-negative hollow observation matrix looks suspiciously like an uncondensed distance matrix


In [7]:
cluster_order = []
for i in a.dendrogram_row.reordered_ind:
cluster_order.append(axis_names[i])

print 'Extract of cluster order:'
cluster_order[50:70]

Extract of cluster order:

Out[7]:
[u'sugarcane bagasse',
u'wood chips',
u'pine',
u'agricultural residues',
u'rice straw',
u'wheat straw',
u'blend',
u'succinic acid',
u'biobutanol',
u'oil extraction',
u'microwave',
u'natural gas',
u'pellets',
u'barley',
u'poplar',
u'sugar beet',
u'grains',
u'acid hydrolysis',
u'consolidated bioprocessing',
u'cbp']

1. Characterisation of Years ¶

1.1. Years in the database ¶

Not all years in the Neo4j database contain technological assets. For this reason, two lists will be created. A completely chronological one and a database one.

In [8]:
# query years
years_available_q = """     MATCH (n:Asset)
WITH n.year as YEAR
RETURN YEAR, count(YEAR)
ORDER BY YEAR ASC """

# create a list with the years where records exist
years_available = DataFrame(connection_to_graph.data(years_available_q)).as_matrix()[:, 0][:-1]
years_available = [int(year) for year in years_available]

# create a pure range list
first_year = int(years_available[0])
last_year = int(years_available[-1])
real_years = range(first_year, last_year + 1, 1)

# give information
print 'The database list starts in {}, ends in {} and contains {} years.'.format(years_available[0], years_available[-1], len(years_available))
print 'The real list starts in {}, ends in {} and contains {} years.'.format(real_years[0], real_years[-1], len(real_years))

The database list starts in 1938, ends in 2019 and contains 38 years.
The real list starts in 1938, ends in 2019 and contains 82 years.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:8: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.



Now that we have all of the years available, we can start building the technological capability matrixes.

1.2. Capability Matrixes of years ¶

1.2.1. Getting the labels ¶

The final list of terms has 352 terms.

1.2.2. Function ¶

We start by creating a function that given a certain year, returns the year's capability matrix.

In [9]:
def get_year_matrix(year, normalization=True):

# define queries
# non intersecting part
q1 =         """
MATCH (a:Asset)-[:CONTAINS]->(fs:Feedstock)
MATCH (a:Asset)-[:CONTAINS]->(out:Output)
MATCH (a:Asset)-[:CONTAINS]->(pt:ProcessingTech)
WHERE a.year = "{}"
RETURN fs.term, pt.term, out.term, count(a)
""".format(year)

process_variables = ['Feedstock', 'Output', 'ProcessingTech']

# interesecting part
q2 =        """
MATCH (a:Asset)-[:CONTAINS]->(fs:{})
MATCH (a:Asset)-[:CONTAINS]->(t:{})
WHERE fs<>t AND a.year = "{}"
RETURN fs.term, t.term, count(a)
"""
# total assets of year
q3 =        """
MATCH (n:Asset)
WITH n.year as YEAR
RETURN YEAR, count(YEAR)
ORDER BY YEAR ASC
"""

# treat incoming data
raw_data_q3 = DataFrame(connection_to_graph.data(q3)).as_matrix()
index_of_year = list(raw_data_q3[:, 0]).index('{}'.format(year))
total_documents = raw_data_q3[index_of_year, 1]

# get data
data_q1 = DataFrame(connection_to_graph.data(q1)).as_matrix()

# create matrix
year_matrix = np.zeros([len(axis_names), len(axis_names)])

# for no intersections data
for row in data_q1:
# the last column is the frequency (count)
frequency = row[0]
indexes = [axis_names.index(element) for element in row[1::]]
# add frequency value to matrix position not inter
for pair in itertools.combinations(indexes, 2):
year_matrix[pair[0], pair[1]] += frequency
year_matrix[pair[1], pair[0]] += frequency

# for intersecting data
for category in process_variables:
process_data = DataFrame(connection_to_graph.data(q2.format(category, category, year))).as_matrix()
for row in process_data:
frequency = row[0]
indexes = [axis_names.index(element) for element in row[1::]]
# add frequency value to matrix position inter
for pair in itertools.combinations(indexes, 2):
year_matrix[pair[0], pair[1]] += frequency / 2 # Divided by two because query not optimized
year_matrix[pair[1], pair[0]] += frequency / 2 # Divided by two because query not optimized

# normalize
norm_year_matrix = year_matrix  / total_documents

# dynamic return
if normalization == True:
return norm_year_matrix
else:
return year_matrix


We finally test our function with the year 2016.

In [10]:
year = 2017
print 'The matrix from {} has shape {} a max value of {}, a min value of {} and a mean of {}.'.format(year, get_year_matrix(year).shape, np.amax(get_year_matrix(year)), np.amin(get_year_matrix(year)), np.mean(get_year_matrix(year)))

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:31: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:36: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:53: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.


The matrix from 2017 has shape (352, 352) a max value of 0.229850746269, a min value of 0.0 and a mean of 0.000211213110583.


Let us print the capability matrices of 2016 normalized and absolute versions.

In [11]:
## call functions
colors = 'binary'
vmin = 0.0000
vmax = 0.05

year_in_focus = 2016
# create a subplot
plt.subplots(2,1,figsize=(17,17))

# first heatmap
plt.subplot(121)
sns.heatmap(get_year_matrix(year_in_focus, normalization=False) , cmap=colors,  cbar=True,cbar_kws={"shrink": .2}, square=True, xticklabels=False, yticklabels=False)
borders(1.5, 'k')
plt.title('Capability Matrix Absolute: {}'.format(year_in_focus))

# second heatmap
plt.subplot(122)
sns.heatmap(get_year_matrix(year_in_focus, normalization=True) , cmap=colors,  cbar=True,cbar_kws={"shrink": .2}, square=True, xticklabels=False, yticklabels=False, vmin=vmin, vmax=vmax)
borders(1.5, 'k')
plt.title('Capability Matrix Normalized: {}'.format(year_in_focus))
plt.show()

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:31: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:36: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:53: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.


In [12]:
## call functions
color1 = 'Blues'
color3 = 'Reds'
rwhite = ListedColormap(['white', 'red'])
gwhite = ListedColormap(['white', 'green'])
blwhite = ListedColormap(['white', 'blue'])
bwhite = ListedColormap(['white', 'grey'])
year_in_focus = 2017
graph_holder = 0.001

original = get_year_matrix(year_in_focus, normalization=False)

threshold = len(f_terms)

threshold = len(f_terms) + len(pt_terms)

plt.subplots(1,1,figsize=(9, 9))
plt.subplot(111)
sns.heatmap(original, cmap=bwhite, center=0.001, cbar=None, square=True, xticklabels=False, yticklabels=False)
borders(1.5, 'k')

plt.title('Capability Matrix Absolute: {}'.format(year_in_focus))
plt.savefig("Capability_Matrix.png", dpi=300, quality=100)
plt.show()

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:31: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:36: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:53: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.


In [13]:
## call functions
colors = 'binary'
year_in_focus = 2017
# create a subplot

plt.subplots(1,1,figsize=(9, 9))
plt.subplot(111)
sns.heatmap(get_year_matrix(year_in_focus, normalization=True) , cmap=colors,  cbar=True,cbar_kws={"shrink": .2}, square=True, xticklabels=False, yticklabels=False, vmin=0.00, vmax=0.05)
borders(1.5, 'k')

plt.title('Capability Matrix Normalized: {}'.format(year_in_focus))
plt.show()

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:31: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:36: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:53: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.



1.3. Year profiles ¶

In order to analyse the correlation of the years between themselves, we will need to transform each year matrix into a list. Since the matrix is symmetrical, we will only need the upper triangle. For control purposes, we have designed our own upper triangulization matrix.

In [14]:
def get_list_from(matrix):
only_valuable = []
extension = 1
for row_number in range(matrix.shape[0]):
only_valuable.append(matrix[row_number, extension:matrix.shape[0]].tolist()) # numpy functions keep 0s so I hard coded it.
extension += 1
return [element for column in only_valuable for element in column ]


Let us print the capability lists of two example years.

In [15]:
# apply functions to both countries
a_list = get_list_from(get_year_matrix(2012, normalization=True))
b_list = get_list_from(get_year_matrix(2013, normalization=True))

# create a matrix where each row is a list of a country
corelation = np.vstack((a_list, b_list))
print corelation.shape
good_cols = [i for i in range(corelation.shape[1]) if np.sum(corelation[:, i]) != 0]

good_corelation = corelation[:, good_cols]
print good_corelation.shape

# plot the matrix
plt.subplots(1,1,figsize=(20, 5))
plt.subplot(111)
sns.heatmap(good_corelation,cmap=ListedColormap(['white', 'black']), center=0.00000001, cbar=None, square=False, yticklabels=['2012', '2013'], xticklabels=False)
plt.yticks(rotation=0)
plt.title('Year Capability List Visualization', size=15)
plt.show()

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:31: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:36: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:53: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.


(2, 61776)
(2, 3700)


It is already apparent that these two consecutive years are highly correlated.

2. Year Correlation Matrix ¶

2.1. Considerations ¶

As previously done with countries, a year correlation matrix will be built.

We first define the scope of the matrix, by defining which years will be analyzed.

In [16]:
number_of_years = len(years_available)
years_in_matrix = years_available
years_correlation = np.zeros([number_of_years, number_of_years])
print years_in_matrix

[1938, 1975, 1980, 1981, 1983, 1985, 1986, 1988, 1989, 1990, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019]


By looping over each year and calculating its capability list, we create a correlation matrix.

We create a ductionnary where every key is a year, and its value the capability list of that same year. We do this to reduce memory:

In [17]:
year_capability_dictionnary = {}

for year in years_in_matrix:
year_capability_dictionnary[year] = get_list_from(get_year_matrix(year, normalization=True))

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:31: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:36: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:53: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.


In [18]:
# for every year A
for row in range(number_of_years):
year_1_list = year_capability_dictionnary[years_in_matrix[row]] # get its capability list

# for every year B
for column in range(number_of_years):
year_2_list = year_capability_dictionnary[years_in_matrix[column]] # get its capability list
years_correlation[row, column] = stats.pearsonr(year_1_list, year_2_list)[0] # calculate the correlation between the two and place it in the matrix

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/scipy/stats/stats.py:3038: RuntimeWarning:

invalid value encountered in double_scalars



We now print the correlation matrix.

In [19]:
plt.subplots(1,1,figsize=(9, 9))
plt.subplot(111)
sns.heatmap(years_correlation,square=True, cbar=True,cbar_kws={"shrink": .2}, yticklabels=years_in_matrix, xticklabels=years_in_matrix)
plt.title('Years Correlation Matrix: Unordered', size=13)
plt.show()


There seems to be a lot of data missing.

Let's plot the amount of records in our databse over time to get a better sense on how to approach the problem.

In [20]:
# get all of the data
data = DataFrame(connection_to_graph.data(years_available_q)).as_matrix()
raw = [int(a) for a in data[:-1, 0]]
timeline = range(min(raw), max(raw))
qtties = []

# build a timeline and number of records.
for year in timeline:
if year not in raw:
qtties.append(0)
else:
idx = list(data[:, 0]).index(str(year))
qtties.append(data[idx, 1])

# re arrange it
amountOfRecords = np.column_stack((timeline, qtties))

# plot the graph
plt.style.use('seaborn-darkgrid')
plt.subplots(1,1,figsize=(16, 5))
plt.subplot(111)
plt.title("Number of assets over time")
plt.xlabel("Year")
plt.ylabel("Number of Available assets")
plt.plot(timeline, qtties)
plt.show()

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:2: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.



2.2. Final Year Correlation Matrix ¶

To counteract the fact that our dataset is not uniformily distributed across the years, we will only consider the last 15 years. [2004-2018]

In [21]:
number_of_years = 22
years_in_matrix = years_available[:-1][-number_of_years:]
years_correlation = np.zeros([number_of_years, number_of_years])


We now rebuild and plot the heatmap of correlations.

In [22]:
# create the matrix again.
for row in range(number_of_years):
year_1_list = year_capability_dictionnary[years_in_matrix[row]]
for column in range(number_of_years):
year_2_list = year_capability_dictionnary[years_in_matrix[column]]
years_correlation[row, column] = stats.pearsonr(year_1_list, year_2_list)[0]

# print it
plt.subplots(1,1,figsize=(8, 8))
plt.subplot(111)
sns.heatmap(years_correlation, cbar=True, cbar_kws={"shrink": .5},square=True, yticklabels=years_in_matrix, xticklabels=years_in_matrix)
plt.title('Years Correlation Matrix: Chronologically Ordered, last {} years'.format(number_of_years), size=13)
plt.savefig("Year_Correlation.png", dpi=300, quality=100)
plt.show()


2.3. Year correlation matrix clustering ¶

Let us reorder the heatmap according to hierarchical clustering.

In [23]:
# plot the clustermap
a = sns.clustermap(years_correlation,  figsize=(8, 8), xticklabels = years_in_matrix, yticklabels=years_in_matrix)
plt.savefig("Year_Correlation_Clustered.png", dpi=300, quality=100)
plt.show()


3. Correlation of years over time ¶

Let us see how related is each year in our matrix with the one before it. In this way we might more easily detect discripancies.

In [24]:
# remove first year
corr_with_pre = []

# iterate years and see their correlation
row = 1
col = 0
corr_with_pre.append(years_correlation[row, col])
row = row + 1
col = col + 1

# plot
plt.subplots(1,1,figsize=(15,7))
pal = sns.color_palette("Reds", len(data))
sns.barplot(np.arange(len(corr_with_pre)), corr_with_pre, palette=np.array(pal[::-1])[np.asarray(corr_with_pre).argsort().argsort()] )
plt.title('Correlation of year with previous year')
plt.ylabel('Pearson Correlation Index')
plt.show()


Some years, such as 2006 or 2007 appear to have very low correlations with the years after. There seems to be an overall tendency of augmenting correlation with the years.

4. Research terms over time ¶

The following part of the analysis wil focus on how certain process variables (Feedstocks, Processing Technologies and Outputs) evolve over time.

This can help in answering questions such as for example:

• Is the focus on a certain processing technology constant over time?
• Is this evolution correlated with other external factors?

Let's start by creating a function such as:

f(term, type of process variable) = [array with the number of records containing the term in each year]

In [25]:
from __future__ import division
def get_records_of(startYear, endYear, term, process_type):

# make query
yearRangeQuery = """ MATCH (a:Asset)-[:CONTAINS]->(fs:{})
WHERE fs.term = "{}"
AND (toInteger(a.year)>={} AND toInteger(a.year)<={})
AND NOT a.year = "Null"
RETURN  a.year, count(a)
ORDER BY a.year   """.format(process_type, term, startYear, endYear)

# extract matrix
rawQuery = DataFrame(connection_to_graph.data(yearRangeQuery)).as_matrix()

# create matrix to store years, docs and total docs
normalTimeline = np.arange(startYear, endYear + 1)
completeMatrix = np.transpose(np.vstack((normalTimeline, normalTimeline, normalTimeline, normalTimeline)))
completeMatrix[:, 1::] = 0

# add number of docs found by query to matrix
for i in range(len(rawQuery[:, 0])):
for j in range(len(completeMatrix[:, 0])):
if int(rawQuery[i, 0]) == completeMatrix[j, 0]:
completeMatrix[j, 1] = rawQuery[i, 1]

# add total number of docs in that year to matrix
for i in range(len(completeMatrix[:, 0])):
for j in range(len(amountOfRecords[:, 0])):
if completeMatrix[i, 0] == amountOfRecords[j, 0]:
completeMatrix[i, 2] = amountOfRecords[j, 1]

# create a list of the normalized results
normalizedRecords = []
for i in range(len(completeMatrix[:, 0])):
if completeMatrix[i, 2] != 0:
normalizedRecords.append(float(completeMatrix[i, 1])/float(completeMatrix[i, 2]))
else:
normalizedRecords.append(0)

result = {}
result['range']  = completeMatrix[:, 0].tolist()
result['nominal'] = completeMatrix[:, 1].tolist()
result['total'] = completeMatrix[:, 2].tolist()
result['normalized'] = normalizedRecords

return result


Now that the function is built, we can plot virtually any evolution.

4.1. Evolution of output terms ¶

Let us see the evolution of records of biogas Vs. ethanol as an example.

In [26]:
listOfOutputs = ['biogas', 'ethanol', 'biodiesel']
start_year = 1990
end_year = 2017

# plot the graph
plt.style.use('seaborn-darkgrid')
plt.subplots(1,1,figsize=(16, 5))
plt.subplot(111)
plt.title("Evolution of Records with focus on Output")
plt.xlabel("Year")
plt.ylabel("Normalized Quantity")

for name in listOfOutputs:
nameData = get_records_of(start_year,end_year,name, 'Output')
plt.plot(nameData['range'], nameData['normalized'], label=name)

plt.legend()
plt.show()

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:13: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.



4.2. Evolution of processing technology terms ¶

Let us develop the same procedure for some processing technologies.

In [27]:
listOfProcTech = ['fermentation','enzymatic hydrolysis','hydrolysis' ]
start_year = 1990
end_year = 2017

# plot the graph
plt.style.use('seaborn-darkgrid')
plt.subplots(1,1,figsize=(16, 5))
plt.subplot(111)
plt.title("Evolution of Records with focus on Processing Technologies")
plt.xlabel("Year")
plt.ylabel("Normalized Quantity")

for name in listOfProcTech:
nameData = get_records_of(start_year,end_year,name, 'ProcessingTech')
plt.plot(nameData['range'], nameData['normalized'], label=name)

plt.legend()
plt.show()

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:13: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.



4.3. Evolution of feedstock terms ¶

Let us develop the same procedure for feedstock.

In [28]:
listOfFeed = ['sugar','wood','paper', 'algae', 'waste']
start_year = 1990
end_year = 2017

# plot the graph
plt.style.use('seaborn-darkgrid')
plt.subplots(1,1,figsize=(16, 5))
plt.subplot(111)
plt.title("Evolution of Records with focus on Feedstocks")
plt.xlabel("Year")
plt.ylabel("Normalized Quantity")

for name in listOfFeed:
nameData = get_records_of(start_year,end_year,name, 'Feedstock')
plt.plot(nameData['range'], nameData['normalized'], label=name)

plt.legend()
plt.show()

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:13: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.



5. Contextual relationships ¶

5.1. Oil ¶

We start by comparing the evolution of the outputs above studied with the average oil price per gallon found in the following website.

We import the data, and convert monthly prices to yearly averages with the bellow code.

In [29]:
# get price per gallon in US dollars
gallon = []
oil_years = list(set([int(e[0:4]) for e in oil_data[:, 0]]))[:-1]
for year in oil_years:
months = 0
for row in oil_data:
if str(year) in row[0]:
months += 1
gallon.append(average)

# get price per barrel data

oil_index = {'gallon':gallon, 'barrel':barrel}

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:2: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:16: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.



Relationship Over Time

Let us visualize how the evolution of the price of gas relates to the normalized quantity of assets over time, in a chronological graph.

In [30]:
# define subplots
fig, ax1 = plt.subplots(figsize=(15,7))
listOfOutputs = ['biogas', 'bioplastic', 'butanol']
colors = ['b', 'y', 'g']
start_year = 1990
end_year = 2017
price_type = 'barrel'

# first axis

for position, outputName in enumerate(listOfOutputs):
nameData = get_records_of(start_year, end_year, outputName, 'Output')
ax1.plot(nameData['range'], nameData['normalized'], label=outputName, color=colors[position], ls='--', alpha=0.5)

ax1.set_xlabel('Years')
ax1.set_ylabel('Number of relative records')
ax1.tick_params('y')
ax1.set_title('Oil Price Vs. Asset Quantity')
ax1.legend(loc=2, frameon=True)
ax1.grid(False)

# second axis
ax2 = ax1.twinx()
ax2.plot(oil_years,oil_index[price_type], color='r', label='Oil Price')
ax2.set_ylabel('Price of {} of oil $US'.format(price_type), color='r') ax2.tick_params('y', colors='r') ax2.legend(loc=1, frameon=True) # expose plt.show()  /Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:13: FutureWarning: Method .as_matrix will be removed in a future version. Use .values instead.  Scatter Visualization To study this relationship in a more in depth fashion we create a process that given a certain term gives us the relationship with the price of gas. In [31]: # define terms outPutToCompare = 'butanol' typeOfProcessVariable = 'Output' price_type = 'gallon' # get data data = get_records_of(1990, 2017, outPutToCompare, typeOfProcessVariable)['normalized'] # plot the figure fig, ax1 = plt.subplots(figsize=(15,7)) sns.regplot(np.asarray(oil_index[price_type]), np.asarray(data) ,fit_reg=True, marker="+", color = 'g') plt.title('Gas price relation with quantity of Assets: {}'.format(outPutToCompare)) plt.xlabel('Price of {} of oil in US$ in Year'.format(price_type))
plt.ylabel('Quantity of Asset {} in Year'.format(outPutToCompare))
plt.show()

# get correlation indexes
correlationIndexes =  stats.pearsonr(np.asarray(oil_index[price_type]), np.asarray(get_records_of(1990, 2017, outPutToCompare, 'Output')['normalized']))
print 'Pearson Correlation Index: ', correlationIndexes[0]
print 'P-value: ', correlationIndexes[1]

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:13: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.


Pearson Correlation Index:  0.8445465111603638
P-value:  1.6031894575347735e-08


In the above graph each datapoint corresponds to a year.

Biggest Positive Correlations

In [32]:
# query for data
term_names_query = """  MATCH (a:Asset)-[:CONTAINS]->(fs:Output)
WHERE (toInteger(a.year)>=1990 AND toInteger(a.year)<=2017)
AND NOT a.year = "Null"
RETURN  fs.term, count(a)
ORDER BY count(a) DESC"""

# get data from past scripts
oil_type = 'gallon'
term_names = list(DataFrame(connection_to_graph.data(term_names_query)).as_matrix()[:, 1].tolist())
correlations = []
p_values = []

# for every term, get its correlation with the price of oil
for term in term_names:
data = get_records_of(1990, 2017, term, 'Output')['normalized']
correlations.append(stats.pearsonr(data, oil_index[oil_type])[0])
p_values.append(stats.pearsonr(data, oil_index[oil_type])[1])

# create a pandas dataframe for pretty printing.
oilDataFrame = pd.DataFrame(
{'Output Name': term_names,
'Pearson Correlation Index': correlations,
'P-value': p_values
})
oilDataFrame = oilDataFrame.sort_values('Pearson Correlation Index', ascending=False)

# print context
print 'The relationship between relative number of documents and price of oil over time:'
top = 10

# print data
print 'TOP {}:'.format(top)
display(oilDataFrame[:top])

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:10: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:13: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.


The relationship between relative number of documents and price of oil over time:
TOP 10:

Output Name P-value Pearson Correlation Index
7 butanol 1.603189e-08 0.844547
19 bioplastic 2.463734e-07 0.804599
1 biodiesel 7.978637e-07 0.784034
21 fatty acid ethyl ester 1.427601e-06 0.772960
3 bioethanol 2.862862e-05 0.704439
9 syng 3.649295e-05 0.697899
15 biobutanol 5.140385e-05 0.688369
8 cellulosic ethanol 1.301892e-04 0.660616
14 biopolymers 3.263515e-04 0.630094

Biggest Negative Correlations

In [33]:
# same approach but value negative correlations
term_names_query = """  MATCH (a:Asset)-[:CONTAINS]->(fs:Output)
WHERE (toInteger(a.year)>=1990 AND toInteger(a.year)<=2017)
AND NOT a.year = "Null"
RETURN  fs.term, count(a)
ORDER BY count(a) DESC"""
oil_type = 'gallon'
term_names = list(DataFrame(connection_to_graph.data(term_names_query)).as_matrix()[:, 1].tolist())
correlations = []
p_values = []
for term in term_names:
data = get_records_of(1990, 2017, term, 'Output')['normalized']
correlations.append(stats.pearsonr(data, oil_index[oil_type])[0])
p_values.append(stats.pearsonr(data, oil_index[oil_type])[1])

oilDataFrame = pd.DataFrame(
{'Output Name': term_names,
'Pearson Correlation Index': correlations,
'P-value': p_values
})
oilDataFrame = oilDataFrame.sort_values('Pearson Correlation Index', ascending=False)

print 'The relationship between relative number of documents and price of oil over time:'
bottom = -10

print 'BOTTOM {}:'.format(bottom)
display(oilDataFrame[bottom:])

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:8: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:13: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.


The relationship between relative number of documents and price of oil over time:
BOTTOM -10:

Output Name P-value Pearson Correlation Index
16 naphtha 0.677733 0.082145
44 biodiesel blending 0.683315 0.080645
45 ethanol blending 0.683315 0.080645
18 renewable diesel 0.716673 0.071767
11 renewable fuel 0.944557 0.013770
17 succinic acid 0.956893 0.010703
40 rdif 0.629618 -0.095276
34 electricity from biomass 0.456174 -0.146748
5 gasoline 0.371514 -0.175570
10 pellets 0.268436 -0.216520

5.2. Sugar ¶

In this part we will make the same analysis but taking an example of a feedstock: sugar.

Data was obtained here.

We start by importing the data.

In [34]:
sugar_data = pd.read_csv('Data/Sugar_Price.csv', delimiter=';', header=None).as_matrix()
sugar = {}
sugar['years'] = [int(e) for e in sugar_data[:, 0]]
sugar['nominal'] = [e for e in sugar_data[:, 1]]
sugar['real'] =  [e for e in sugar_data[:, 2]]

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:1: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.



Relationship Over Time

Let us see the evolution of Sugar prices side by side with the evolution of certain feedstocks in our database.

In [35]:
# define subplots
fig, ax1 = plt.subplots(figsize=(15,7))
feedstock_list = ['sugar', 'wood', 'sugarcane', 'sugar beet', 'cellulosic sugars']
colors = ['gold', 'mediumblue', 'm', 'green', 'k']

start_year = 1990
end_year = 2017
sugar_price_type = 'real'

# first axis
for position,feedstock in enumerate(feedstock_list):
data = get_records_of(start_year, end_year, feedstock, 'Feedstock')
ax1.plot(data['range'], data['normalized'], label=feedstock, ls='--', color=colors[position])

ax1.set_xlabel('Years')
ax1.set_ylabel('Relative number of records')
ax1.tick_params('y')
ax1.set_title('Sugar Prices Vs. Asset Quantity')
ax1.legend(loc=3, frameon=True)
ax1.grid(False)

# second axis
ax2 = ax1.twinx()
ax2.plot(sugar['years'], sugar[sugar_price_type], color='r', label='Sugar Price', ls='-')
ax2.set_ylabel('Price per kilo of sugar in $US (inflation adjusted)', color='r') ax2.tick_params('y', colors='r') ax2.legend(loc=1, frameon=True) # expose plt.show()  /Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:13: FutureWarning: Method .as_matrix will be removed in a future version. Use .values instead.  Scatter Example Let us see a scatter plot where each point is a year and the x and y axis correpond to the price of sugar and quantity of assets respectively. In [36]: outPutToCompare = 'sugarcane' typeOfProcessVariable = 'Feedstock' price_type = 'real' data = get_records_of(1990, 2017, outPutToCompare, typeOfProcessVariable)['normalized'] fig, ax1 = plt.subplots(figsize=(15,7)) sns.regplot(np.asarray(sugar[price_type]), np.asarray(data) ,fit_reg=True, marker="+", color = 'b') plt.title('Sugar price relation with quantity of Assets: {}'.format(outPutToCompare)) plt.xlabel('Price of sugar US$ per kilo in Year ({})'.format(price_type))
plt.ylabel('Quantity of Asset {} in Year'.format(outPutToCompare))

plt.show()

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:13: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.



Biggest Positive Correlations

Which are the feedstocks who are more related to the price of sugar per kilo in what regards the number of records?

In [37]:
term_names_query = """  MATCH (a:Asset)-[:CONTAINS]->(fs:Feedstock)
WHERE (toInteger(a.year)>=1990 AND toInteger(a.year)<=2017)
AND NOT a.year = "Null"
RETURN  fs.term, count(a)
ORDER BY count(a) DESC"""
price_type = 'nominal'
term_names = list(DataFrame(connection_to_graph.data(term_names_query)).as_matrix()[:, 1].tolist())
correlations = []
p_values = []
for term in term_names:
data = get_records_of(1990, 2017, term, 'Feedstock')['normalized']
correlations.append(stats.pearsonr(data, sugar[price_type])[0])
p_values.append(stats.pearsonr(data, sugar[price_type])[1])

sugarDataframe = pd.DataFrame(
{'Feedstock Name': term_names,
'Pearson Correlation Index': correlations,
'P-value': p_values
})
sugarDataframe = sugarDataframe.sort_values('Pearson Correlation Index', ascending=False)

print 'The relationship between relative number of documents and price per kilo of sugar:'
top = 10

print 'TOP {}:'.format(top)
display(sugarDataframe[:top])

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:7: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:13: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.


The relationship between relative number of documents and price per kilo of sugar:
TOP 10:

Feedstock Name P-value Pearson Correlation Index
26 sugarcane 6.074365e-07 0.789014
107 cellulosic sugars 1.263220e-06 0.775341
43 jatropha 1.521222e-06 0.771713
34 sorghum 3.083429e-06 0.757299
64 dry biomass 3.454736e-06 0.754884
75 beets 4.105286e-06 0.751165
99 dedicated energy crops 6.915371e-06 0.739525
1 algae 1.103076e-05 0.728562
100 hybrid poplar 1.490683e-05 0.721206
25 soy 2.631077e-05 0.706675

Biggest Negative Correlations

In [38]:
term_names_query = """  MATCH (a:Asset)-[:CONTAINS]->(fs:Feedstock)
WHERE (toInteger(a.year)>=1990 AND toInteger(a.year)<=2017)
AND NOT a.year = "Null"
RETURN  fs.term, count(a)
ORDER BY count(a) DESC"""
price_type = 'nominal'
term_names = list(DataFrame(connection_to_graph.data(term_names_query)).as_matrix()[:, 1].tolist())
correlations = []
p_values = []
for term in term_names:
data = get_records_of(1990, 2017, term, 'Feedstock')['normalized']
correlations.append(stats.pearsonr(data, sugar[price_type])[0])
p_values.append(stats.pearsonr(data, sugar[price_type])[1])

sugarDataframe = pd.DataFrame(
{'Feedstock Name': term_names,
'Pearson Correlation Index': correlations,
'P-value': p_values
})
sugarDataframe = sugarDataframe.sort_values('Pearson Correlation Index', ascending=False)

print 'The relationship between relative number of documents and price per kilo of sugar:'
bottom = -10

print 'Bottom {}:'.format(bottom * -1)
display(sugarDataframe[bottom:])

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:7: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:13: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.


The relationship between relative number of documents and price per kilo of sugar:
Bottom 10:

Feedstock Name P-value Pearson Correlation Index
93 wood fuel 0.336664 -0.188530
72 waste oil 0.329527 -0.191282
136 particle board 0.289545 -0.207425
156 durum 0.279399 -0.211741
178 citrus residues 0.260452 -0.220080
123 beef tallow 0.240798 -0.229158
53 sawdust 0.223542 -0.237542
138 trap grease 0.212719 -0.243025
79 wood waste 0.210637 -0.244102
5 wood 0.137684 -0.287685

NON SERIES TIME ANALYSIS IS A LIMITATION.

6. Comparing Years ¶

In this part of the analysis the goal is two understand what exact capabilities differ from year to year. More exactly, how does one particular capability evolve over the course of two or more years.

For example, if in year X1, Y1% of the assets related to sugar, what is the percentage Y2% in year X2?

6.1. Visualizing the differences ¶

Let us visualize two different years side by side.

In [39]:
## call functions
first_year = 2010
second_year = 2017
colors='binary'

graph_holder = 0.005

fst_year_matrix = get_year_matrix(first_year, normalization=False)
scnd_year_matrix = get_year_matrix(second_year, normalization=False)

# create a subplot
plt.subplots(2,1,figsize=(17,17))

# first heatmap
plt.subplot(121)
sns.heatmap(fst_year_matrix , cmap=colors,  cbar=True,cbar_kws={"shrink": .2}, square=True, xticklabels=False, yticklabels=False, vmax=graph_holder)
borders(1.5, 'k')
plt.title('Capability Matrix: {}'.format(first_year))

# second heatmap
plt.subplot(122)
sns.heatmap(scnd_year_matrix , cmap=colors,  cbar=True,cbar_kws={"shrink": .2}, square=True, xticklabels=False, yticklabels=False, vmax=graph_holder)
borders(1.5, 'k')
plt.title('Capability Matrix: {}'.format(second_year))
plt.show()

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:31: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:36: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.

/Users/duarteocarmo/.pyenv/versions/miniconda3-4.3.30/envs/tech-cap/lib/python2.7/site-packages/ipykernel_launcher.py:53: FutureWarning:

Method .as_matrix will be removed in a future version. Use .values instead.