[SydPhil] History and Philosophy of Linguistics Reading group
nick.riemer at sydney.edu.au
Fri Nov 2 09:04:43 AEDT 2012
History and Philosophy of Linguistics Reading group
Next meeting: Tuesday, November 6, 5.30-7pm, Woolley S361
Reading: Landauer, T.K. and Dumais, S.T. 1997. A Solution to Plato's Problem: The Latent Semantic Analysis Theory of Acquisition, Induction, and Representation of Knowledge. Psychological Review 104: 211-240
How do people know as much as they do with as little information as they get? The problem takes
many forms; learning vocabulary from text is an especially dramatic and convenient case for research.
A new general theory of acquired similarity and knowledge representation, latent semantic analysis
(LSA), is presented and used to successfully simulate such learning and several other psycholinguistic
phenomena. By inducing global knowledge indirectly from local co-occurrence data in a large body
of representative text, LSA acquired knowledge about the full vocabulary of English at a comparable
rate to schoolchildren. LSA uses no prior linguistic or perceptual similarity knowledge; it is based
solely on a general mathematical learning method that achieves powerful inductive effects by extracting
the right number of dimensions (e.g., 300) to represent objects and contexts. Relations to
other theories, phenomena, and problems are sketched.
Reading downloadable from http://hplinguistics.pbworks.com
Enquiries: nick.riemer at sydney.edu.au
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