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README.md
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---
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license: apache-2.0
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language: en
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tags:
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- sentiment-analysis
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- roberta
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- fine-tuned
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datasets:
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- custom
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metrics:
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- accuracy
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- precision
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- recall
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- f1
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base_model:
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- FacebookAI/roberta-base
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pipeline_tag: text-classification
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---
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# Final Sentiment Model - Go-Raw
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## Model description
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This is a fine-tuned `roberta-base` model for multi-class sentiment classification.
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It was trained on a custom dataset of ~240k examples with 3 sentiment classes:
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- 0: Negative
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- 1: Positive
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- 2: Neutral
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The model shows significant improvement over the base model on this task.
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## Intended uses & limitations
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- ✅ Suitable for English text sentiment analysis.
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- 🚫 Not tested on other languages or domains beyond training data.
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- 🚫 Not suitable for detecting abusive, toxic, or hate speech.
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## Training details
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- Base model: `roberta-base`
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- Epochs: 3
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- Learning rate: 2e-5
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- Batch size: 8
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- Optimizer: AdamW
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## Evaluation
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### Dataset
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- Train set: 1,94,038 examples
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- Test set: 48,510 examples
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### Performance
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| Metric | Base Model | Fine-tuned Model |
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|-------|------------|-------------------|
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| Accuracy | 34.1% | **88.1%** |
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| Macro F1 | 24.3% | **87.5%** |
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| Weighted F1 | 27.1% | **88.1%** |
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### Per-class metrics
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| Class | Precision | Recall | F1-score |
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|------|-----------|--------|---------|
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| **0 (Negative)** | 85.3% | 83.1% | 84.2% |
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| **1 (Neutral)** | 91.4% | 89.8% | 90.5% |
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| **2 (Positive)** | 86.0% | 89.4% | 87.7% |
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## How to use
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```python
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from transformers import AutoModelForSequenceClassification, AutoTokenizer
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model = AutoModelForSequenceClassification.from_pretrained("Go-Raw/final-sentiment-model-go-raw")
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tokenizer = AutoTokenizer.from_pretrained("Go-Raw/final-sentiment-model-go-raw")
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text = "I absolutely love this!"
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inputs = tokenizer(text, return_tensors="pt")
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outputs = model(**inputs)
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predicted_class = outputs.logits.argmax().item()
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print(predicted_class)
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