Document Type	Master's Dissertation
Author	Liang, Hsuan Lorraine
Email	liangh@unisa.ac.za
URN	etd-06252009-163007
Document Title	Spell checkers and correctors : a unified treatment
Degree	MSc
Department	Computer Science
Supervisor	Advisor Name Title Prof D G Kourie Committee Co-Chair Prof B W Watson Supervisor
Keywords	performance n-gram FSA formal concept analysis edit distance dictionary lookup classification spell checking spell correcting
Date	2009-04-15
Availability	unrestricted
Abstract The aim of this dissertation is to provide a unified treatment of various spell checkers and correctors. Firstly, the spell checking and correcting problems are formally described in mathematics in order to provide a better understanding of these tasks. An approach that is similar to the way in which denotational semantics used to describe programming languages is adopted. Secondly, the various attributes of existing spell checking and correcting techniques are discussed. Extensive studies on selected spell checking/correcting algorithms and packages are then performed. Lastly, an empirical investigation of various spell checking/correcting packages is presented. It provides a comparison and suggests a classification of these packages in terms of their functionalities, implementation strategies, and performance. The investigation was conducted on packages for spell checking and correcting in English as well as in Northern Sotho and Chinese. The classification provides a unified presentation of the strengths and weaknesses of the techniques studied in the research. The findings provide a better understanding of these techniques in order to assist in improving some existing spell checking/correcting applications and future spell checking/correcting package designs and implementations. ŠUniversity of Pretoria 2008 Please cite as follows Liang, HL 2008, Spell checkers and correctors : a unified treatment, MSc dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://upetd.up.ac.za/thesis/available/etd-06252009-163007/ > E1305/gm
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