- Information retrieval systems are a type of information system,
focusing on supporting the accessing of
documents, usually by carrying out a series
of operations with user queries.
- The aim of these systems is to be easily usable, have
good efficiency, and to be effective in finding relevant items, thus
giving good recall and precision.
- Advanced retrieval systems have the potential of doing better
than manual systems, and of using sophisticated indexing, weighting,
and other processing to obviate the need for intellectual indexing with
controlled vocabularies.
- Data structures and algorithms for search, retrieval, filtering,
and other operations build on the foundation of additional
work in computer
science, but are specialized to help with IS&Ractivities.