Information retrieval: Information retrieval (IR) is finding relevant information from a large collection of data. IR systems work by indexing the data and ranking documents based on their relevance to a query. See also Relevance, Information, Artificial Intelligence, AI Research, Knowledge representation._____________Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments. |