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ERIC Number: EJ1032221
Record Type: Journal
Publication Date: 2014
Pages: 17
Abstractor: As Provided
Reference Count: 35
ISBN: N/A
ISSN: ISSN-0163-853X
Transforming Selected Concepts into Dimensions in Latent Semantic Analysis
Olmos, Ricardo; Jorge-Botana, Guillermo; León, José Antonio; Escudero, Inmaculada
Discourse Processes: A multidisciplinary journal, v51 n5-6 p494-510 2014
This study presents a new approach for transforming the latent representation derived from a Latent Semantic Analysis (LSA) space into one where dimensions have nonlatent meanings. These meanings are based on lexical descriptors, which are selected by the LSA user. The authors present three analyses that provide examples of the utility of this methodology. The first analysis demonstrates how document terms can be projected into meaningful new dimensions. The second demonstrates how to use the modified space to perform multidimensional document labeling to obtain a high and substantive reliability between LSA experts. Finally, the internal validity of the method is assessed by comparing an original semantic space with a modified space. The results show high consistency between the two spaces, supporting the conclusion that the nonlatent coordinates generated using this methodology preserve the semantic relationships within the original LSA space.
Routledge. Available from: Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site: http://www.tandf.co.uk/journals
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A