from datasets import load_dataset

dataset = load_dataset("yelp_review_full")
dataset["train"][100]

#creating the dataset
from transformers import AutoTokenizer

tokenizer = AutoTokenizer.from_pretrained("bert-base-cased")


def tokenize_function(examples):
    return tokenizer(examples["text"], padding="max_length", truncation=True)

#mapping the values:
tokenized_datasets = dataset.map(tokenize_function, batched=True)

#small Datasets:
small_train_dataset = tokenized_datasets["train"].shuffle(seed=42).select(range(1000))
small_eval_dataset = tokenized_datasets["test"].shuffle(seed=42).select(range(1000))

#Loading pretrained Model:
from transformers import AutoModelForSequenceClassification

model = AutoModelForSequenceClassification.from_pretrained("bert-base-cased", num_labels=5)

###

from transformers import TrainingArguments

training_args = TrainingArguments(output_dir="test_trainer")

#Evaluate

def compute_metrics(eval_pred):
    logits, labels = eval_pred
    predictions = np.argmax(logits, axis=-1)
    return metric.compute(predictions=predictions, references=labels)

#Training Argumnents and importing Trainer:
from transformers import TrainingArguments, Trainer

training_args = TrainingArguments(output_dir="test_trainer", evaluation_strategy="epoch")

#Defining Hyperparameters for Trainer:
trainer = Trainer(
    model=model,
    args=training_args,
    train_dataset=small_train_dataset,
    eval_dataset=small_eval_dataset,
    compute_metrics=compute_metrics,
)

#Execute the training:
trainer.train()

#Predictions:
predictions = trainer.predict(small_eval_dataset)
print(predictions.predictions.shape,predictions.label_ids.shape)
print(predictions)

#Gradio
import gradio as gr

def greet(name):
    return "Hello " + name + "!"

demo = gr.Interface(fn=greet, inputs="text", outputs="text")

demo.launch()