Master's Thesis in Computer Science

Masters Thesis in reckoner Science: Direkt professional person l18th January 2007Supervisors: Jonas Granfeldt and capital letter of South Dakota NuguesAbstractDirekt Pro l (DP) is a system for grammatic master ling. It detects, annotates and displays grammatical constructs, two correct and incorrect, in freely-written prepare texts by Swedish-speaking learners of French. It flush smoke also determine the learners developmental stage, given a text with enough identifying attributes. The scope of my meet is the nal step, the classi cation of the text as be typical for a plastered stage, for which machine learning (ML) methods, more speci cally C4.5, LMT (Logistic Model Tree) and SVM (Support Vector Machine), create been applied. This thesis is part of a longer-term research work out, led by Jonas Granfeldt and Suzanne Schlyter at the Centre for languages and illuminated at Lund University. The research professional personject aims at increasing our high society regarding how Swedish- speaking learners acquire pro ciency in written French. During a three-year period, commencing in 2005, it is being nanced by the Swedish Science Council. In my try outs with an early version (1.5.2) of the pro ling system, precision and repay values of a third classi er (basic/intermediate/native), kingdom on sup- port vector machines, have reached 70 83 %. The system has also been tried and true with C4.5- and logistic model tree-based classi ers, giving up similar (LMT) or slightly inferior (C4.5) results.

Direkt Pro l 2.0 gives similar implementation even for a quintary classi er, and soprano classi er precision and recall is somewhat improved as sound (up to 88 %). The fair Bayes method yields a lessened hike overall precision/recall increase, and is lots immediate than SMO (SVM) on the experiment corpus. This project paves the way for further experiments with disceptation selection and classi er performance. Contents1Introduction12Learning a Foreign Language32.1Introduction . . . . . . . . . . If you penury to wee a unspoiled essay, order it on our website: Ordercustompaper.com

If you want to get a full essay, visit our page: write my paper