Connectionist Models of Reading: Incorporating Semantics
نویسنده
چکیده
There now exist direct route connectionist models of reading aloud (i.e. text to phoneme conversion) that learn to perform on their training data and unseen words with accuracy comparable to that of humans. They also exhibit a number of developmental, reaction time and brain damage effects that are observed experimentally. However, various deficiencies (such as their failure to perform accurate lexical decision and to show the pseudohomophone effect) indicate the need to incorporate some form of lexical/semantic system into these models. In this paper we present a preliminary investigation of this problem. A general framework is outlined that models network activation flow between orthography, phonology and semantics. Explicit small scale connectionist simulations show how such an approach can account for many aspects of reading (and related tasks) that are not possible without the influence of the semantic system. Further possible refinements of this approach are discussed.
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Modelling the Acquisition of Reading Skills
Existing direct route connectionist models of reading aloud (i.e. text to phoneme conversion) can now learn to perform on their training data and unseen words with accuracy comparable to that of humans. They also exhibit a number of developmental, reaction time and brain damage effects that are observed experimentally. However, various deficiencies (such as their failure to perform reliable lex...
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