Natural Language Inference (NLI) Classifier

Introduction to Natural Language Inference (NLI)

Natural Language Inference (NLI) is a fundamental task in the field of natural language processing (NLP) that involves determining the logical relationship between a premise and a hypothesis. The relationship can be classified into three categories:

• Entailment: The premise logically entails the hypothesis.
• Contradiction: The premise contradicts the hypothesis.
• Neutrality: The premise neither entails nor contradicts the hypothesis.

NLI plays a critical role in understanding and processing human language, enabling applications such as automated reasoning, text summarization, and information extraction.

Project Overview

This project aims to build an interactive web application that allows users to input a premise and a hypothesis. Our NLI model then classifies the relationship between these two text sequences. This application serves as a practical demonstration of NLI's capabilities and its importance in real-world applications like fact-checking and AI-powered decision-making.

Features

• Interactive Web Interface: A user-friendly web interface where users can input text sequences.
• Real-time Classification: Instant classification of the relationship as entailment, contradiction, or neutrality.
• Examples and Guidance: Embedded examples and guidance on how to phrase premises and hypotheses for effective results.

Tech Stack

• Python: The primary programming language used.
• Flask: A lightweight WSGI web application framework used to serve the application.
• PyTorch and Transformers: Used for model training and inference.
• HTML/CSS: For crafting the web interface.

Getting Started

Prerequisites

• Python 3.8 or above
• Pip package manager

Installation

1. Clone the repository

   git clone https://github.com/your-repository/nli-classifier.git
   cd nli-classifier

2. Set Up Virtual Environment

   python -m venv venv
   source venv/bin/activate

   For Windows:

   venv\Scripts\activate

3. Install Dependencies

   pip install -r requirements.txt

4. Run the Application

   flask run

   Navigate to http://127.0.0.1:5000/ in your web browser to access the application.

Alternatively, use the command-line interface (CLI) for specific tasks:

Training the Model

To download the MNLI dataset and train the NLI model, run the following commands:

nlp dl-data
nlp train

To explore the Model

nlp predict "premise sentence" "hypothesis sentence"
nlp stats

To launch the Web Application

nlp web