QUESTION
Which of the following is not a classical model of information retrieval?
OPTIONS
(1) Boolean
(2) Cluster
(3) Probabilistic
(4) Vector-space
ANSWER
(2) Cluster
Cluster is not a classical model of information retrieval.
Boolean, Probabilistic, and Vector-space are the classical models of information retrieval.
Information Retrieval refers to the process, methods, and procedures of searching, locating, and retrieving recorded data and information from a file or database. In libraries and archives modern information retrieval is done by searching full-text databases, locating items from bibliographic databases, and document supply via a network.
Information retrieval (IR) is the activity of obtaining information system resources that are relevant to an information need from a collection of those resources. Searches can be based on full-text or other content-based indexing. Information retrieval is the science of searching for information in a document, searching for documents themselves, and also searching for the metadata that describes data, and for databases of texts, images or sounds.¹
Information retrieval, Recovery of information, especially in a database stored in a computer. Two main approaches are matching words in the query against the database index (keyword searching) and traversing the database using hypertext or hypermedia links. Keyword searching has been the dominant approach to text retrieval since the early 1960s; hypertext has so far been confined largely to personal or corporate information-retrieval applications. Evolving information-retrieval techniques, exemplified by developments with modern Internet search engines, combine natural language, hyperlinks, and keyword searching. Other techniques that seek higher levels of retrieval precision are studied by researchers involved with artificial intelligence.²
NOTE
- This question was asked in the examination UGC NET in Library and Information Science in July 2018 in India. National Eligibility Test (NET), also known as NTA UGC NET, is an exam for determining the eligibility of Indian nationals for the eligibility for Assistant Professor only or Junior Research Fellowship & Eligibility for Assistant Professor both in Library and Information Science in Indian universities and colleges.
REFERENCES
1. Wikipedia, "Information retrieval," https://en.wikipedia.org/wiki/Information_retrieval (accessed February 21, 2020).
2. Encyclopaedia Britannica, "Information retrieval," https://www.britannica.com/technology/information-retrieval (accessed February 21, 2020).
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