Information Retrieval System Explained: Types, Comparison & Components


Components of Information Retrieval Model



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Components of Information Retrieval Model
Here are the prerequisites for an IR model: 

  1. An automated or manually-operated indexing system used to index and search techniques and procedures.

  2. A collection of documents in any one of the following formats: text, image or multimedia.

  3. A set of queries that serve as the input to a system, via a human or machine.

  4. An evaluation metric to measure or evaluate a system’s effectiveness (for instance, precision and recall). For instance, to ensure how useful the information displayed to the user is. 

The various components of an Information Retrieval Model include: 
Step 1

Acquisition

The IR system sources documents and multimedia information from a variety of web resources. This data is compiled by web crawlers and is sent to database storage systems.

Step 2

Representation

The free-text terms are indexed, and the vocabulary is sorted, both using automated or manual procedures. For instance, a document abstract will contain a summary, meta description, bibliography, and details of the authors or co-authors.

Step 3


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