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In the environment of word-processors thesauri serve the user's convenience in choosing the best suitable synonym of a word. Words in text of agglutinative languages occur almost always as inflected forms, thus finding them directly in a stem vocabulary is impossible. H01y0ltu, the inflectional thesaurus coping with this problem is introduced in the paper. | Helyette Inflectional Thesaurus for Agglutinative Languages Gábor Proszeky1 2 László Tỉhanyỉ1 3 1 Morphologic 2 OPKM Comp. Centre F 5 u. 56-58. 1 3 Honvéd u. 19. H-1011 Budapest H-1055 Budapest Hungary Hungary e-mail h6109pro@ella.hu 1. Introduction In the environment of word-processors thesauri serve the user s convenience in choosing the best suitable synonym of a word. Words in text of agglutinative languages occur almost always as inflected forms thus finding them directly in a stem vocabulary is impossible. Helyette the inflectional thesaurus coping with this problem is introduced in the paper. 2. Synonym dictionary with morphological knowledge The inflectional thesaurus is a tool which 1 first performs the morphological segmentation of the input wordform then 2 finds its stem s lexical base s 3 stores the suffix sequence situated on the right of the actual stem-allomorph 4 offers the synonyms for the lexical base s and 5 generates the new word-form consisting of the adequate allomorph of the chosen stem and the adequate allomorph of the above suffix-sequence. Both the morphological analysis and synthesis steps are done by the Humor high-speed unification morphol-ogy method described by Prószéky and Tihanyi 1992 1993 . The possible roots and the suffixes following them are temporarily stored and Helyette performs the morphological synthesis on the basis of the new synonym root and the interna code of the stored suffix sequence. For more details see Example 1. 3. Implementation details The morphological framework behind Helytffe relies on unification morphology. Both the thesaurus and the mor-phological generator as a stand-alone tool are fully implemented for Hungarian. The synonym system consists of 40.000 headwords the stem dictionary of the morphological analyzer generator contains 80.000 stems suffix dictionaries contain all the inflectional suffixes and the productive derivational morphemes of present-day Hungarian. With the help of these dictionaries .
