! pip install datasets transformers[sentencepiece]

! pip install datasets transformers[sentencepiece]

from datasets import load_dataset
from transformers import AutoTokenizer
import numpy as np

raw_datasets = load_dataset("glue", "mrpc")
checkpoint = "bert-base-uncased"
tokenizer = AutoTokenizer.from_pretrained(checkpoint)

def tokenize_dataset(dataset):
    encoded = tokenizer(
        dataset["sentence1"],
        dataset["sentence2"],
        max_length=128,
        truncation=True,
    )
    return encoded.data

tokenized_datasets = raw_datasets.map(tokenize_dataset, batched=True)

train_dataset = tokenized_datasets["train"].to_tf_dataset(
    columns=["input_ids", "attention_mask", "token_type_ids"],
    label_cols=["label"],
    shuffle=True,
    batch_size=8)

validation_dataset = tokenized_datasets["validation"].to_tf_dataset(
    columns=["input_ids", "attention_mask", "token_type_ids"],
    label_cols=["label"],
    shuffle=True,
    batch_size=8)

next(iter(train_dataset))[1]

import tensorflow as tf
from transformers import TFAutoModelForSequenceClassification

checkpoint = 'bert-base-cased'
model = TFAutoModelForSequenceClassification.from_pretrained(checkpoint, num_labels=2)
loss = tf.keras.losses.SparseCategoricalCrossentropy(from_logits=True)
model.compile(optimizer='adam', loss=loss)

model.fit(
    train_dataset,
    validation_data=validation_dataset,
    epochs=3
)