Conversational AI ChatBot

Intelligent ChatBot built with Microsoft's DialoGPT transformer to make conversations with human users!

In this project?

This project builds an intelligent AI chatbot based on the famous transformer architecture - Microsoft's DialoGPT. According to Hugging Face's model card, DialoGPT is a State-Of-The-Art large-scale pretrained dialogue response generation model for multiturn conversations. The human evaluation results indicate that the response generated from DialoGPT is comparable to human response quality under a single-turn conversation Turing test. The model is trained on 147M multi-turn dialogue from Reddit discussion thread.

This repository contains:

Conversational_AI_ChatBot.py - A Python version of ChatBot

conversational-ai-chatbot.ipynb - A Interactive Notebook version of ChatBot

requirements.txt - Explores Python libraries requirements to run the project

What is a chatbot?

A ChatBot is a kind of virtual assistant that can build conversations with human users! A Chatting Robot. Building a chatbot is one of the popular tasks in Natural Language Processing.

Are all chatbots the same?

Chatbots fall under three common categories:

1. Rule-based chatbots

2. Retrieval-based chatbots

3. Intelligent chatbots

Rule-based chatbots

These bots respond to users' inputs based on certain pre-specified rules. For instance, these rules can be defined as if-elif-else statements. While writing rules for these chatbots, it is important to expect all possible user inputs, else the bot may fail to answer properly. Hence, rule-based chatbots do not possess any cognitive skills.

Retrieval-based chatbots

These bots respond to users' inputs by retrieving the most relevant information from the given text document. The most relevant information can be determined by Natural Language Processing with a scoring system such as cosine-similarity-score. Though these bots use NLP to do conversations, they lack cognitive skills to match a real human chatting companion. The Wiki-IR-ChatBot, built by Author, falls under this category!

Intelligent AI chatbots

These bots respond to users' inputs after understanding the inputs, as humans do. These bots are trained with a Machine Learning Model on a large training dataset of human conversations. These bots are cognitive to match a human in conversing. Amazon's Alexa, Apple's Siri fall under this category. Further, most of these bots can make conversations based on the preceding chat texts (chat history). This Conversation AI ChatBot is a kind of an intelligent chatbot!

Sample Chats by this project

Happy Chatting!

Image by Andy Kelly