README.md

metadata

license: apache-2.0
datasets:
  - christykoh/imdb_pt
language:
  - pt
metrics:
  - accuracy
library_name: transformers
pipeline_tag: text-classification
tags:
  - sentiment-analysis
widget:
  - text: Esqueceram de mim 2 é um dos melhores filmes de natal de todos os tempos.
    example_title: Exemplo
  - text: Esqueceram de mim 2 é o pior filme da franquia inteira.
    example_title: Exemplo

TeenyTinyLlama-162m-IMDB

TeenyTinyLlama is a series of small foundational models trained on Portuguese.

This repository contains a version of TeenyTinyLlama-162m fine-tuned on a translated version of the IMDB dataset.

Reproducing

# IMDB
! pip install transformers datasets evaluate accelerate -q

import evaluate
import numpy as np
from datasets import load_dataset
from transformers import AutoTokenizer, DataCollatorWithPadding
from transformers import AutoModelForSequenceClassification, TrainingArguments, Trainer

# Load the task
dataset = load_dataset("christykoh/imdb_pt")

# Create a `ModelForSequenceClassification`
model = AutoModelForSequenceClassification.from_pretrained(
    "nicholasKluge/TeenyTinyLlama-162m", 
    num_labels=2, 
    id2label={0: "NEGATIVE", 1: "POSITIVE"}, 
    label2id={"NEGATIVE": 0, "POSITIVE": 1}
)

tokenizer = AutoTokenizer.from_pretrained("nicholasKluge/TeenyTinyLlama-162m")

# Preprocess the dataset
def preprocess_function(examples):
    return tokenizer(examples["text"], truncation=True, max_length=256)

dataset_tokenized = dataset.map(preprocess_function, batched=True)

# Create a simple data collactor
data_collator = DataCollatorWithPadding(tokenizer=tokenizer)

# Use accuracy as an evaluation metric
accuracy = evaluate.load("accuracy")

# Function to compute accuracy
def compute_metrics(eval_pred):
    predictions, labels = eval_pred
    predictions = np.argmax(predictions, axis=1)
    return accuracy.compute(predictions=predictions, references=labels)

# Define training arguments
training_args = TrainingArguments(
    output_dir="checkpoints",
    learning_rate=4e-5,
    per_device_train_batch_size=16,
    per_device_eval_batch_size=16,
    num_train_epochs=3,
    weight_decay=0.01,
    evaluation_strategy="epoch",
    save_strategy="epoch",
    load_best_model_at_end=True,
    push_to_hub=True,
    hub_token="your_token_here",
    hub_model_id="username/model-name-imdb"
)

# Define the Trainer
trainer = Trainer(
    model=model,
    args=training_args,
    train_dataset=dataset_tokenized["train"],
    eval_dataset=dataset_tokenized["test"],
    tokenizer=tokenizer,
    data_collator=data_collator,
    compute_metrics=compute_metrics,
)

# Train!
trainer.train()

Results

Models	IMDB
Teeny Tiny Llama 162m	91.14
Bert-base-portuguese-cased	92.22
Gpt2-small-portuguese	91.60