This paper deals with the effective implementation of the new Czech morphological analyser ajka which is based on the algorithmic description of the Czech formal morphology. First, we present two most important word-forming processes in Czech-inflection and derivation. A brief description of the data structures used for storing morphological information as well as a discussion of the efficient storage of lexical items (stem bases of Czech words) is included too. Finally, we bring some interesting features of the designed and implemented system ajka together with current statistic data.
This paper deals with a complex system of processing raw Czech texts. Several modules were implemented which perform different levels of processing. These modules can easily be incorporated into many other linguistic applications and some of them are already exploited in this way. The first level of processing raw texts represents a reliable morphological analysis -we give a survey of the effective implementation of the robust morphological analyser for Czech named ajka. Texts tagged by ajka can be further processed by the partial parser Dis and its extension VaDis which is based on verb valencies. The output of these systems serves for automatic partial disambiguation of input texts. The tools described in this paper are widely used for parsing large corpora and can be employed in the initial phase of semantic analysis.
One of the main goals of this paper is to describe a formal procedure linking inflectional and derivational processes in Czech and to indicate that they can be, if appropriate tools and resources are used, applied to other Slavonic languages. The tools developed at the NLP Laboratory FI MU, have been used, particularly the morphological analyser ajka and the program I par for processing and maintaining the morphological database.
Abstract. In this paper, we present tools for semi-automatic assignment of Czech nouns to declination patterns. First, we explain the reasons for development of such tools and then we describe the structure of the system in detail. It is based on a decision tree that consists of questions and answers allowing to distinguish particular declination patterns. Finally, we provide basic statistic data that clarify the relation between the patterns we developed and the classical ones.
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