Information Retrieval (IR) System

An Information Retrieval (IR) System is an information processing system that implements an information retrieval algorithm to solve an IR task.

• Context:
  • It can (typically) make use of a Document Index (created by a Text Indexing System)
  • It can be based on an Information Retrieval Software Package.
  • It can require a Query Form (supported by a Text Search System).
  • It can support an (interactive) Information Retrieval Service.
  • It can be evaluated by an IR Evaluation Task.
  • ...
• Example(s):
  • Web Search System such as:
    • Google Search System;
    • Yahoo Search System;
    • Bing Search System;
  • News Search: Google News http://news.google.com
  • Research Publication Search: CiteSeer, Google Scholar.
  • BioText Search Engine,
  • SMART System.
  • Legal IR System.
  • …
• Counter-Example(s):
  • an Information Filtering System.
  • an Information Analysis System.
  • an Information Extraction System.
  • an Information Transmission System,
• See: Digital Indexing System, Question Answering System.

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