---
language: en
license: mit
tags:
  - text-classification
  - code-quality
  - documentation
  - code-comments
  - developer-tools
datasets:
  - synthetic
metrics:
  - accuracy
  - f1
  - precision
  - recall
widget:
  - text: "This function calculates the Fibonacci sequence using dynamic programming to avoid redundant calculations. Time complexity: O(n), Space complexity: O(n)"
    example_title: "Excellent Comment"
  - text: "Calculates the sum of two numbers and returns the result"
    example_title: "Helpful Comment"
  - text: "does stuff with numbers"
    example_title: "Unclear Comment"
  - text: "DEPRECATED: Use calculate_new() instead. This method will be removed in v2.0"
    example_title: "Outdated Comment"
---

# Code Comment Quality Classifier 🔍

## Model Description

This model automatically classifies code comments into four quality categories to help improve code documentation and review processes. It's designed to assist developers in maintaining high-quality code documentation by identifying comments that may need improvement.

**Categories:**
- 🌟 **Excellent**: Clear, comprehensive, and highly informative comments that explain the "why" and "how"
- ✅ **Helpful**: Good comments that add value but could be more detailed
- ⚠️ **Unclear**: Vague or confusing comments that don't provide sufficient information
- 🚫 **Outdated**: Comments that may no longer reflect the current code or are marked as deprecated

## Intended Uses

### Primary Use Cases
- **Code Review Automation**: Automatically flag low-quality comments during pull request reviews
- **Documentation Quality Audits**: Scan codebases to identify areas needing documentation improvements
- **Developer Education**: Help developers learn what constitutes good code comments
- **IDE Integration**: Provide real-time feedback on comment quality while coding

### Out-of-Scope Use Cases
- Generating new comments (this is a classification model, not a generation model)
- Evaluating code quality (only evaluates comments, not the code itself)
- Security analysis or vulnerability detection
- Production-critical decision making without human review

## How to Use

### Quick Start

```python
from transformers import AutoTokenizer, AutoModelForSequenceClassification
import torch

# Load model and tokenizer
model_name = "Snaseem2026/code-comment-classifier"
tokenizer = AutoTokenizer.from_pretrained(model_name)
model = AutoModelForSequenceClassification.from_pretrained(model_name)

# Classify a comment
comment = "This function calculates fibonacci numbers using dynamic programming"
inputs = tokenizer(comment, return_tensors="pt", truncation=True, max_length=512)

with torch.no_grad():
    outputs = model(**inputs)
    predictions = torch.nn.functional.softmax(outputs.logits, dim=-1)
    predicted_class = torch.argmax(predictions, dim=-1).item()

labels = ["excellent", "helpful", "unclear", "outdated"]
print(f"Comment quality: {labels[predicted_class]}")
```

### Batch Processing

```python
comments = [
    "Handles user authentication and session management",
    "does stuff",
    "TODO: fix this later"
]

inputs = tokenizer(comments, return_tensors="pt", truncation=True, 
                   padding=True, max_length=512)

with torch.no_grad():
    outputs = model(**inputs)
    predictions = torch.argmax(outputs.logits, dim=-1)

for comment, pred in zip(comments, predictions):
    print(f"{comment}: {labels[pred.item()]}")
```

## Training Data

### Dataset
The model was trained on a synthetic dataset of code comments carefully crafted to represent the four quality categories. The training data consists of:

- **Total samples**: ~1,000 comments
- **Distribution**: Balanced across all four categories
- **Language**: English code comments
- **Sources**: Synthetic data based on common patterns in real-world code comments

### Data Creation
The synthetic dataset was created by:
1. Identifying common patterns in high-quality and low-quality code comments
2. Generating representative examples for each category
3. Creating variations to increase diversity
4. Ensuring balanced representation across all classes

**Note**: This model was trained on synthetic data. For production use, consider fine-tuning on domain-specific comments from your codebase.

## Training Procedure

### Preprocessing
- Text tokenization using DistilBERT tokenizer
- Maximum sequence length: 512 tokens
- Truncation and padding applied

### Training Hyperparameters

```yaml
- Base Model: distilbert-base-uncased
- Training Epochs: 3
- Batch Size: 16 (train), 32 (eval)
- Learning Rate: 2e-5
- Weight Decay: 0.01
- Warmup Steps: 500
- Optimizer: AdamW
```

### Training Infrastructure
- Framework: Hugging Face Transformers
- Hardware: CPU/GPU compatible
- Training Time: ~10-30 minutes (depending on hardware)

## Evaluation Results

### Metrics

The model achieves the following performance on the test set:

| Metric | Score |
|--------|-------|
| Accuracy | 0.9485 (94.85%) |
| Precision (weighted) | 0.9535 (95.35%) |
| Recall (weighted) | 0.9485 (94.85%) |
| F1 Score (weighted) | 0.9468 (94.68%) |

### Per-Class Performance

| Class | Precision | Recall | F1-Score |
|-------|-----------|--------|----------|
| Excellent | 1.0000 (100%) | 1.0000 (100%) | 1.0000 (100%) |
| Helpful | 0.8889 (88.9%) | 1.0000 (100%) | 0.9412 (94.1%) |
| Unclear | 1.0000 (100%) | 0.7917 (79.2%) | 0.8837 (88.4%) |
| Outdated | 0.9231 (92.3%) | 1.0000 (100%) | 0.9600 (96.0%) |

### Key Findings
- ✨ **Perfect classification** of excellent comments (100% precision & recall)
- 🎯 **Zero false negatives** for helpful and outdated comments
- ⚠️ Slight challenge distinguishing unclear comments from other categories
- 📊 Strong overall performance with 94.85% accuracy

## Limitations

### Known Limitations

1. **Synthetic Training Data**: The model was trained on synthetic data and may not capture all nuances of real-world code comments
2. **Language**: Only trained on English comments
3. **Context**: Evaluates comments in isolation without code context
4. **Domain**: May perform differently on specialized domains (e.g., scientific computing, embedded systems)
5. **Subjectivity**: Comment quality can be subjective; the model reflects patterns in the training data

### Recommendations

- Use as a supplementary tool, not a replacement for human review
- Fine-tune on domain-specific data for better performance
- Validate predictions in your specific use case
- Combine with other code quality tools for comprehensive analysis

## Bias and Fairness

### Potential Biases

- **Style Bias**: May favor certain commenting styles over others
- **Verbosity Bias**: Longer comments may be rated higher regardless of actual quality
- **Pattern Bias**: Trained on specific patterns that may not represent all commenting approaches

### Mitigation Strategies

- Train on diverse comment styles
- Regular evaluation on real-world data
- User feedback integration
- Continuous model improvement

## Environmental Impact

- **Base Model**: DistilBERT (~66M parameters)
- **Carbon Footprint**: Minimal for training on small synthetic dataset
- **Inference**: Efficient, suitable for real-time applications

## Citation

If you use this model in your research or application, please cite:

```bibtex
@misc{code-comment-classifier-2026,
  author = {Naseem, Sharyar},
  title = {Code Comment Quality Classifier},
  year = {2026},
  publisher = {Hugging Face},
  howpublished = {\url{https://huggingface.co/Snaseem2026/code-comment-classifier}}
}
```

## Model Card Authors

- Sharyar Naseem (@Snaseem2026)

## Model Card Contact

For questions or feedback, please open an issue on the model's discussion tab or contact via Hugging Face.

## License

MIT License - See [LICENSE](LICENSE) file for details.

## Acknowledgments

- Built with [Hugging Face Transformers](https://huggingface.co/transformers/)
- Base model: [DistilBERT](https://huggingface.co/distilbert-base-uncased) by Hugging Face
- Inspired by the need for better code documentation practices

---

**Disclaimer**: This model is provided for educational and productivity purposes. Always apply human judgment when evaluating code quality and documentation.