Relevance (information retrieval) is a way of finding information that is useful and important to you. It helps you find the exact information you are looking for without having to look through large amounts of data. For example, if you are looking for information about dogs, relevance could help you find the most important and relevant information without having to read through hundreds of pages of information. It's like a big search engine - it looks through the vast amount of data on the internet and finds what you need quickly and easily.