Information retrieval

related topics
{math, number, function}
{system, computer, user}
{work, book, publish}
{rate, high, increase}
{theory, work, human}

Information retrieval (IR) is the science of searching for documents, for information within documents, and for metadata about documents, as well as that of searching relational databases and the World Wide Web. There is overlap in the usage of the terms data retrieval, document retrieval, information retrieval, and text retrieval, but each also has its own body of literature, theory, praxis, and technologies. IR is interdisciplinary, based on computer science, mathematics, library science, information science, information architecture, cognitive psychology, linguistics, and statistics.

Automated information retrieval systems are used to reduce what has been called "information overload". Many universities and public libraries use IR systems to provide access to books, journals and other documents. Web search engines are the most visible IR applications.


Full article ▸

related documents
Diffie-Hellman key exchange
Lazy evaluation
XSL Transformations
Delegation pattern
Symmetric-key algorithm
Outer product
Jules Richard
Prim's algorithm
Riemann mapping theorem
Oracle machine
Paracompact space
Fixed point combinator
Generalized mean
Base (topology)
Block cipher
Existential quantification
Commutator subgroup
Queue (data structure)
Pigeonhole principle
Definable real number
Poisson process
ML (programming language)
Boolean ring
Rank (linear algebra)
Augmented Backus–Naur Form