write me application of 3 domains of ai and how it works in short

Sure, here are three domains of AI and their applications:

1. Natural Language Processing (NLP): This domain of AI is concerned with the interaction between computers and human language. It involves programming computers to process and analyze large amounts of natural language data. An application of NLP is in chatbots. Chatbots use NLP to understand and respond to text inputs from users, providing services like customer support, product recommendations, and more. They work by using algorithms to understand the context and sentiment of the user's text and generate appropriate responses.

2. Machine Learning (ML): This is a method of data analysis that automates analytical model building. It is a branch of artificial intelligence based on the idea that systems can learn from data, identify patterns and make decisions with minimal human intervention. An application of ML is in