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NeuralForge - Transformer Architecture From Scratch
π₯ NeuralForge: Crafting Intelligence, One Neuron at a Time
A complete, production-ready implementation of the Transformer architecture from scratch using only PyTorch tensors. No high-level modules like nn.Transformer are used - every component is forged from the ground up.
flowchart TD
A[π Choose Task Type] --> B{π― Task}
B -->|π Generation| C[π§ Decoder-Only]
B -->|π Translation| D[π Encoder-Decoder]
B -->|π Classification| E[π Encoder-Only]
C --> F[βοΈ Configure Model]
D --> F
E --> F
F --> G[ποΈ Train Model]
G --> H[π― Generate/Inference]
style A fill:#e1f5fe,stroke:#01579b,stroke-width:2px
style C fill:#e8f5e8,stroke:#1b5e20,stroke-width:2px
style D fill:#fff3e0,stroke:#e65100,stroke-width:2px
style E fill:#f3e5f5,stroke:#4a148c,stroke-width:2px
style F fill:#fce4ec,stroke:#880e4f,stroke-width:2px
style G fill:#e0f2f1,stroke:#004d40,stroke-width:2px
style H fill:#fff8e1,stroke:#f57f17,stroke-width:2px
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π Examples
π― Complete Working Examples
π 1. Text Generation (examples/text_generation.py)
flowchart LR
A[π Sample Text] --> B[π§ Train Model]
B --> C[π Generate Text]
C --> D[π Evaluate Results]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
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Features:
π§ Trains decoder-only transformer for language modeling
π Text generation with multiple sampling strategies
flowchart TB
A[πΊπΈ English Text] --> B[π§ Encoder]
B --> C[π Cross Attention]
D[πͺπΈ Spanish Text] --> E[π§ Decoder]
C --> E
E --> F[π Translated Output]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
style E fill:#fce4ec,stroke:#880e4f
style F fill:#e0f2f1,stroke:#004d40
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Features:
π English to Spanish translation
π Encoder-decoder architecture
πΊοΈ Complete inference pipeline
π Translation quality metrics
python examples/translation.py
π 3. Text Classification (examples/classification.py)
flowchart TD
A[π Input Text] --> B[π§ Encoder]
B --> C[π Global Pooling]
C --> D[π― Classification Head]
D --> E[π Sentiment Prediction]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
style E fill:#fce4ec,stroke:#880e4f
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Features:
π Sentiment analysis with 3 classes (positive, negative, neutral)
π§ Encoder-only architecture with classification head
graph LR
A[π Query] --> B[β‘ Attention]
C[π Key] --> B
D[π Value] --> B
B --> E[π― Output]
style A fill:#e1f5fe,stroke:#01579b
style C fill:#e8f5e8,stroke:#1b5e20
style D fill:#fff3e0,stroke:#e65100
style B fill:#f3e5f5,stroke:#4a148c
style E fill:#fce4ec,stroke:#880e4f
graph TD
A[π Token IDs] --> B[π€ Embeddings]
B --> C[π Positional Info]
C --> D[π Enhanced Embeddings]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
graph LR
A[π₯ Input] --> B[π Normalize]
B --> C[βοΈ Scale & Shift]
C --> D[π€ Output]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
flowchart TD
A[π Dataset] --> B[π DataLoader]
B --> C[π§ Model]
C --> D[π Loss]
D --> E[β‘ Optimizer]
E --> F[π― Update Weights]
F --> C
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
style E fill:#fce4ec,stroke:#880e4f
style F fill:#e0f2f1,stroke:#004d40
flowchart TD
A[βοΈ Config Setup] --> B[π§ Model Architecture]
A --> C[π― Task Type]
A --> D[π Training Parameters]
B --> E[π Ready to Train]
C --> E
D --> E
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
style E fill:#fce4ec,stroke:#880e4f
graph LR
A[π Loss] --> B[π Decrease]
C[π― Accuracy] --> D[π Increase]
E[β‘ Learning Rate] --> F[π Schedule]
style A fill:#ffebee,stroke:#c62828
style B fill:#e8f5e8,stroke:#2e7d32
style C fill:#e3f2fd,stroke:#1565c0
style D fill:#e8f5e8,stroke:#2e7d32
style E fill:#fff3e0,stroke:#f57c00
style F fill:#f3e5f5,stroke:#4a148c
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π§ͺ Testing
π¬ Test Suite
π― Run All Tests
flowchart TD
A[π§ͺ Run Tests] --> B[π Coverage Report]
A --> C[π Code Quality]
A --> D[β Validation]
B --> E[π Results]
C --> E
D --> E
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
style E fill:#fce4ec,stroke:#880e4f
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# π§ͺ Run complete test suite with coverage
pytest tests/ -v --cov=src
# π Generate coverage report
pytest tests/ --cov=src --cov-report=html
π― Specific Test Categories
Test Category
π Command
π― Coverage
Attention
pytest tests/test_attention.py -v
Multi-head attention
Transformer
pytest tests/test_transformer.py -v
Model architecture
Utilities
pytest tests/test_utils.py -v
Helper functions
All Tests
pytest tests/ -v
Complete validation
π Test Results
pie title Test Coverage
"Core Components" : 85
"Attention" : 90
"Training" : 80
"Utils" : 95
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π Performance
β‘ Model Benchmarks
π Model Size Comparison
graph TD
A[π Model Size] --> B{βοΈ Configuration}
B -->|π’ Small| C[256D - 15M Params]
B -->|π‘ Medium| D[512D - 65M Params]
B -->|π΄ Large| E[1024D - 260M Params]
C --> F[β‘ Fast Training]
D --> G[π― Balanced Performance]
E --> H[π§ High Capacity]
style A fill:#e1f5fe,stroke:#01579b
style C fill:#e8f5e8,stroke:#1b5e20
style D fill:#fff3e0,stroke:#e65100
style E fill:#ffebee,stroke:#c62828
style F fill:#e0f2f1,stroke:#004d40
style G fill:#f3e5f5,stroke:#4a148c
style H fill:#fce4ec,stroke:#880e4f
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Configuration
π Parameters
πΎ Memory
β‘ Speed
π― Use Case
Small (256D)
15M
0.5 GB
2000 tok/s
Prototyping
Medium (512D)
65M
2.0 GB
1200 tok/s
Production
Large (1024D)
260M
8.0 GB
600 tok/s
Research
πββοΈ Training Metrics
graph LR
A[ποΈ Training] --> B[π Convergence]
B --> C[β±οΈ Time]
C --> D[π― Performance]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
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Metric
π Value
π Trend
Convergence
10-20 epochs
π Fast
Accuracy
>90%
π High
BLEU Score
>25
π Good
Perplexity
<50
π Low
π§ Customization
π¨ Extending the Architecture
π§ Custom Attention Mechanisms
graph TD
A[π§ Base Attention] --> B[π¨ Custom Logic]
B --> C[β‘ Enhanced Performance]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
graph LR
A[π Standard PE] --> B[π¨ Custom PE]
B --> C[π Better Performance]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
flowchart TD
A[π Getting Started] --> B[π§ Model Basics]
B --> C[ποΈ Training Guide]
C --> D[π¨ Custom Models]
D --> E[π Advanced Training]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
style E fill:#fce4ec,stroke:#880e4f
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π Tutorial
π― Level
β±οΈ Time
Getting Started
π’ Beginner
15 min
Custom Models
π‘ Intermediate
30 min
Advanced Training
π΄ Advanced
45 min
π€ Contributing
π Join Our Community
π― How to Contribute
flowchart TD
A[π΄ Fork Repo] --> B[πΏ Create Branch]
B --> C[π» Make Changes]
C --> D[π§ͺ Test Changes]
D --> E[π€ Pull Request]
E --> F[β Code Review]
F --> G[π Merge]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
style E fill:#fce4ec,stroke:#880e4f
style F fill:#e0f2f1,stroke:#004d40
style G fill:#fff8e1,stroke:#f57f17
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π οΈ Development Setup
graph LR
A[π₯ Clone] --> B[π§ Setup]
B --> C[π§ͺ Test]
C --> D[π Ready]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
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# π΄ Clone the repository
git clone https://github.com/yourusername/transformer-from-scratch.git
cd transformer-from-scratch
# π§ Install in development mode
pip install -e ".[dev]"# π§ͺ Run tests to verify setup
pytest tests/ -v
# π Ready to contribute!
π Contribution Guidelines
π― Type
π Description
π¨ Guidelines
π Bug Fix
Fix reported issues
Add tests, document changes
β¨ Feature
Add new functionality
Follow existing patterns
π Docs
Improve documentation
Clear, concise examples
π§ͺ Tests
Add test coverage
Test edge cases, maintain coverage
π¨ Code Style
graph TD
A[π Code] --> B[π Black Format]
B --> C[π§ͺ Flake8 Lint]
C --> D[π Type Check]
D --> E[β Ready]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
style E fill:#fce4ec,stroke:#880e4f
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# π¨ Format code
black src/ tests/
# π Lint code
flake8 src/ tests/
# π Type checking
mypy src/
π License
βοΈ MIT License
graph TD
A[π MIT License] --> B[π Commercial Use]
A --> C[π§ Modification]
A --> D[π€ Distribution]
A --> E[π§ͺ Private Use]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
style E fill:#fce4ec,stroke:#880e4f
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This project is licensed under the MIT License - see the LICENSE file for details.
π You are free to:
β Use commercially
β Modify
β Distribute
β Use privately
β No warranty provided
π Acknowledgments
π Credits & References
mindmap
root((π Thanks))
Research
"Attention Is All You Need"
Harvard NLP
Community
Contributors
Users
Inspiration
Open Source
ML Community
If you use this implementation in your research, please cite:
@misc{transformer-from-scratch,
title={Transformer Architecture From Scratch},
author={Your Name},
year={2024},
url={https://github.com/yourusername/transformer-from-scratch}
}
π Links
π Connect & Explore
graph TD
A[π GitHub] --> B[π Documentation]
A --> C[π Issues]
A --> D[π¬ Discussions]
B --> E[π API Reference]
C --> F[π Bug Reports]
D --> G[π‘ Ideas]
style A fill:#e1f5fe,stroke:#01579b
style B fill:#e8f5e8,stroke:#1b5e20
style C fill:#fff3e0,stroke:#e65100
style D fill:#f3e5f5,stroke:#4a148c
style E fill:#fce4ec,stroke:#880e4f
style F fill:#e0f2f1,stroke:#004d40
style G fill:#fff8e1,stroke:#f57f17
NeuralForge: Complete Transformer architecture from scratch using only PyTorch tensors. Learn how Transformers really work with clean, production-ready code.