Memoized parsing with derivatives

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Publication Type honors thesis
School or College School of Computing
Department Computer Science
Faculty Mentor Vivek Srikumar
Creator Yehle, Tobin
Title Memoized parsing with derivatives
Year graduated 2016
Date 2016-04
Description Due to the computational complexity of parsing, constituent parsing is not preferred for tasks involving large corpora. However, the high similarity between sentences in natural language suggests that it is not necessary to pay the full computational price for each new sentence. In this work we present a new parser for phrase structure grammars that takes advantage of this fact by caching partial parses to reuse on later matching sentences. The algorithm we present is the first probabilistic extension of the family of derivative parsers that repeatedly apply the Brzozowski derivative to find a parse tree. We show that the new algorithm is easily adaptable to natural language parsing - we introduce a folded variant of the parser that keeps the size of lexical grammars small, thus allowing for efficient implementations of complex parsing models.
Type Text
Publisher University of Utah
Subject Parsing (Computer grammar)
Language eng
Rights Management (c) Tobin Yehle
Format Medium application/pdf
Format Extent 25,055 bytes
Identifier honors/id/87
Permissions Reference URL https://collections.lib.utah.edu/details?id=1315246
ARK ark:/87278/s6bw0rwb
Setname ir_htoa
Date Created 2016-06-28
Date Modified 2018-10-30
ID 205739
Reference URL https://collections.lib.utah.edu/ark:/87278/s6bw0rwb
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