Context-sensitive vocabulary mapping with a spreading activation network

Jonghoon Lee, David Dubin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A spreading activation network model is applied to the problem of reconciling heterogeneous indexing (STI index terms and ApJ subject descriptors) in a database of documents in the field of astronomy. Drawing on evidence from a set of co-indexed documents, a 3-layer feed-forward network is constructed. It includes an input term layer (source vocabulary), document layer, and output term layer (target vocabulary). Results of experiments show that the network can uncover both static, term-to-term relationships, and those that depend on the context of a particular document's indexing. From the static mapping experiment, the asymmetric nature of term mapping is revealed. A visualization tool graphically shows complex term relationships identified by this model. The context-sensitive mapping experiment tests the robustness of the network against the removal of each document node under testing. The performance of the complete network is compared to that of the reduced network. The results imply that mapping is largely dependent on regularities emerging from the entire pattern of connections in the network rather than localist representations. The mapping from specific to general shows better performance than the mapping from general to specific. Several issues related to the model including limitations, application of a learning algorithm, and the generality of the study are discussed.

Original languageEnglish (US)
Title of host publicationProceedings of the 22nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 1999
PublisherAssociation for Computing Machinery, Inc
Pages198-205
Number of pages8
ISBN (Electronic)1581130961, 9781581130966
DOIs
StatePublished - Aug 1 1999
Event22nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 1999 - Berkeley, United States
Duration: Aug 15 1999Aug 19 1999

Publication series

NameProceedings of the 22nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 1999

Other

Other22nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 1999
Country/TerritoryUnited States
CityBerkeley
Period8/15/998/19/99

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design
  • Information Systems

Fingerprint

Dive into the research topics of 'Context-sensitive vocabulary mapping with a spreading activation network'. Together they form a unique fingerprint.

Cite this