AlphaZip

Welcome to the AlphaZip - Neural Networks Enhanced Lossless Text Compression project! This project explores leveraging the power of Large Language Models (LLMs) for compressing text in a lossless manner using rank-based prediction followed by compression techniques.

Find the pre-print here: https://arxiv.org/abs/2409.15046

Overview

Our approach utilizes advanced neural network models to achieve efficient and effective text compression. For real-time text file compression on your personal computer refer to the instructions below.

Requirements

To get started, ensure you have the following:

• NVIDIA GPU: GeForce RTX 4080
• Python: 3.10.12
• PyTorch: 2.2.2
• TensorFlow: 2.11.0 (for XLA support)

Installation

1. Clone the repository:

   git clone https://github.com/Swathi-Shree-Narashiman/AlphaZip.git

2. Install the required dependencies:

   pip install -r requirements.txt

Usage

1. Compressing Text Files:

   • Use the compress.py script to compress any text file.
   • Modify the path variable in the script to point to your file.

2. PDF Files:

   • Utilize the read_PDF function to extract text from a PDF.
   • Save the extracted text to a file and then compress it using the compress.py script.

3. Adaptive Huffman Method:

   • To use the adaptive Huffman method, either copy and paste the function or import it as a user-defined library.

Hyperparameters

• input_length: Number of ASCII characters from the input text to compress.
• context_size: Number of characters used as context for the transformer block to predict the next token.

Domain-Specific Compression

Fine-Tuning

To fine-tune the model:

Create a directory inside your current directory using

    mkdir fine_tuning_weights

1. Run the PEFT/fine_tuning.py script with your input file, e.g., input.txt.

   python PEFT/fine_tuning.py <input.txt>

2. Test compression performance from any checkpoint using compress.py:

   python compress.py <file_to_be_compressed_path> <current_directory_path/fine_tuning_weights/checkpoint-XXXX>

   Replace XXXX with the checkpoint you would like to load.

Knowledge Distillation

To perform knowledge distillation on GPT-2:

Create a directory inside your current directory using

    mkdir knowledge_distillation_weights

1. Run the PEFT/knowledge_distillation.py script with your input file, e.g., input.txt.

   python PEFT/knowledge_distillation.py <input.txt>

2. Test compression performance from any checkpoint using compress.py:

   python compress.py <file_to_be_compressed_path> <current_directory_path/knowledge_distillation_weights/checkpoint-XXXX>

Replace XXXX with the checkpoint you would like to load.

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