Information Retrieval

What is Information Retrieval?

Information Retrieval (IR) is the process of searching for, identifying, and retrieving relevant information from large collections of data, such as documents, images, or databases. IR techniques are widely used in search engines, document management systems, and digital libraries. The primary goal of IR is to help users find the information they need quickly and efficiently.

How does Information Retrieval work?

Information Retrieval involves several key steps:

  1. Indexing: Building an index that maps the terms or features of the data to the documents or items in which they appear.
  2. Query processing: Interpreting and analyzing user queries to identify the relevant search terms or features.
  3. Ranking: Scoring and sorting the documents or items based on their relevance to the query.
  4. Retrieval: Returning the most relevant results to the user.

Information Retrieval can be performed using various techniques, including boolean retrieval, vector space models, probabilistic models, and machine learning models such as neural networks.

Additional resources on Information Retrieval: