NDLI: Two models of retrieval with probabilistic indexing

Content Provider	ACM Digital Library
Author	Fuhr, Norbert
Abstract	We describe two retrieval models for probabilistic indexing. The binary independence indexing (BII) model is a generalized version of the Maron & Kuhns indexing model. In this model, the indexing weight of a descriptor in a document is an estimate of the probability of relevance of this document with respect to queries using this descriptor. The retrieval-with-probabilistic-indexing (RPI) model is suited to different kinds of probabilistic indexing. Therefore we assume that each indexing model has its own concept of 'correctness' to which the probabilities relate. The concept of correctness is not necessarily identical with the concept of relevance, it is only required to depend on relevance. In addition to the probabilistic indexing weights, the RPI model provides the possibility of relevance weighting of search terms. Both retrieval models are compared in experiments, showing equally good results.
Starting Page	249
Ending Page	257
Page Count	9
File Format	PDF
ISBN	0897911873
DOI	10.1145/253168.253221
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1986-09-01
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Two models of retrieval with probabilistic indexing