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README.md
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# MiniGPT — Lightweight Transformer for Text Generation
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**MiniGPT** is a minimal yet powerful GPT-style language model built from scratch using PyTorch. It is designed for educational clarity, customization, and efficient real-time text generation. This project demonstrates the full training and inference pipeline of a decoder-only transformer architecture, including streaming capabilities and modern sampling strategies.
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> Hosted with ❤️ by [@Austin207](https://huggingface.co/Austin207)
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---
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## Model Description
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MiniGPT is a small, word-level transformer model with the following architecture:
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* 4 Transformer layers
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* 4 Attention heads
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* 128 Embedding dimensions
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* 512 FFN hidden size
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* Max sequence length: 128
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* Word-level tokenizer (trained with Hugging Face `tokenizers`)
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Despite its size, it supports advanced generation strategies including:
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* Repetition Penalty
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* Temperature Sampling
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* Top-K & Top-P (nucleus) sampling
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* Real-time streaming output
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---
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## Usage
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Install dependencies:
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```bash
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pip install torch tokenizers
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```
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Load the model and tokenizer:
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```python
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from miniGPT import MiniGPT
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from inference import generate_stream
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from tokenizers import Tokenizer
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import torch
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# Load tokenizer
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tokenizer = Tokenizer.from_file("wordlevel.json")
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# Load model
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model = MiniGPT(
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vocab_size=tokenizer.get_vocab_size(),
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embed_dim=128,
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num_heads=4,
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ff_dim=512,
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num_layers=4,
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max_seq_len=128
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)
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checkpoint = torch.load("model_checkpoint_step20000.pt")
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model.load_state_dict(checkpoint["model_state_dict"])
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model.eval()
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# Generate text
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prompt = "Beneath the ancient ruins"
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generate_stream(model, tokenizer, prompt, max_new_tokens=60, temperature=1.0, top_k=50, top_p=0.9)
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```
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---
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## Training
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Train from scratch on any plain-text dataset:
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```bash
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python training.py
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```
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Training includes:
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* Checkpointing
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* Sample generation previews
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* Word-level tokenization with `tokenizers`
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* Custom datasets via `alphabetical_dataset.txt` or your own
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---
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## Files in This Repository
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| File | Purpose |
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| -------------------------- | ---------------------------- |
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| `miniGPT.py` | Core Transformer model |
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| `transformer.py` | Transformer block logic |
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| `multiheadattention.py` | Multi-head attention module |
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| `Tokenizer.py` | Tokenizer loader |
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| `training.py` | Training loop |
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| `inference.py` | CLI and streaming generation |
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| `dataprocess.py` | Text preprocessing tools |
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| `wordlevel.json` | Trained word-level tokenizer |
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| `alphabetical_dataset.txt` | Sample dataset |
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| `requirements.txt` | Required dependencies |
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---
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## Model Card
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| Property | Value |
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| ------------ | --------------------------------- |
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| Model Type | Decoder-only GPT |
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| Size | Small (\~4.6M params) |
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| Trained On | Word-level dataset (custom) |
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| Intended Use | Text generation, educational demo |
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| License | MIT |
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---
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## Intended Use and Limitations
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This model is meant for educational, experimental, and research purposes. It is not suitable for commercial or production use out-of-the-box. Expect limitations in coherence, factuality, and long-context reasoning.
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---
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## Contributions
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We welcome improvements, bug fixes, and new features!
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```bash
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# Fork, clone, and create a branch
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git clone https://github.com/austin207/Transformer-Virtue-v2.git
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cd Transformer-Virtue-v2
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git checkout -b feature/your-feature
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```
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Then open a pull request!
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---
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## License
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This project is licensed under the [MIT License](https://github.com/austin207/Transformer-Virtue-v2/blob/main/LICENSE).
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---
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## Explore More
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* Based on GPT architecture from OpenAI
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* Inspired by [karpathy/nanoGPT](https://github.com/karpathy/nanoGPT)
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* Compatible with Hugging Face tools and tokenizer ecosystem
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