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Confrontation of Czech and German valency lexicons
Dušek, Ondřej ; Dovalil, Vít (advisor) ; Maroszová, Jana (referee)
This master thesis deals with a comparison of the most common German and Czech valency lexicons, focusing on the dictionaries E-VALBU and VALLEX in particular. It employs two different methods: a confrontation of selected verbal translation pairs using corpus analysis and taking the introspective valency tests of the individual dictionaries into account, as well as qualitative research among the linguists - the authors and users of valency dictionaries. The thesis proves the usability of corpus analysis for this kind of research and shows that most differences in dictionary entries are not caused by a different behavior of the respective verbs in both languages, but rather by divergent theoretical bases of the dictionaries. The interviews with selected linguists confirm the theoretical discrepancies, but also show many similar opinions and experiences, in particular those regarding practical work with the dictionaries: a stress on the user-friendliness of the dictionaries and the use of real language data from the corpora.
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Processing of Turkic Languages
Ciddi, Sibel ; Zeman, Daniel (advisor) ; Lopatková, Markéta (referee)
This thesis aims to present several combined methods for the morphological processing of Turkic languages, such as Turkish, which pose a specific set of challenges for computational processing, and also aims to make larger data sets publicly available. Because of the highly productive, agglutinative morphology in Turkish, data sparsity---besides the lack of the publicly available large data sets---impose difficulties in natural language processing, especially with regards to relying on purely statistical methods. Therefore, we evaluate a publicly available rule-based morphological analyzer, TRmorph, based on finite state transducers. In order to enhance the efficiency of this analyzer, and to expand its lexicon; we combine statistical and heuristics-based methods for the named entity processing (and construction of gazetteers), morphological disambiguation task and the multiword expression processing. Experiment results obtained so far point out that the use of heuristic-methods provides promising coverage increase for the text being processed by TRmorph, while the statistical approach is used as a back-up for more fine-grained tasks that may not be captured by pattern-based heuristics approach. This way, our proposed combined approach enhances the efficiency of a morphological analyzer based purely on FST...
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Valency of Verbs in the Prague Dependency Treebank
Urešová, Zdeňka ; Hajičová, Eva (advisor) ; Lopatková, Markéta (referee) ; Ondrejovič, Slavo (referee)
Title: Valency of verbs in the Prague Dependency Treebank Author: PhDr. Zdeňka Urešová Department: Institute of Formal and Applied Linguistics MFF UK Supervisor: Prof. PhDr. Eva Hajičová, DrSc. Abstract: This dissertation describes PDT-Vallex, a valency lexicon of Czech verbs, and its relation to the annotation of the Prague Dependency Treebank (PDT). The PDT-Vallex lexicon was created during the an- notation of the PDT and it is a valuable source of verbal valency information available both for linguistic research and for computer- ized natural language processing. In this thesis, we describe not only the structure and design of the lexicon (which is closely related to the notion of valency as developed in the Functional Generative De- scription of language) but also the relation between the PDT-Vallex and the PDT. The explicit and full-coverage linking of the lexicon to the treebank prompted us to pay special attention to diatheses; we propose formal transformation rules for diatheses to handle their surface realization even when the canonical forms of verb arguments as captured in the lexicon do not correspond to the forms of these arguments actually appearing in the corpus.
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French Analytic predicates with Event nouns in "-ation".
KALIVODOVÁ, Soňa
This diploma thesis focuses on the French analytic predicates with event nouns with the suffix -ation. It is divided into two parts, a theoretical and a practical one. The theoretical part starts with a description of the analytic predicates and their caracteristics on which are based the tests used for identification of this type of predicates. It is followed by the description and typologies of the event nouns which represent one of two fondamental constituents of the analytic predicates. Then the work deals the process of nominalization, and the importance of the delimitation, sense and characteristics of the French suffix -ation is highlighted. The practical part analyses the most frequent French event nouns with the suffix -ation. First of all, a sample of thirty most frequent French nouns in -ation is selected, then the ethymology of these nouns is researched and their action sens is tested. After that, this work treats the valency of the action nouns and their collocability with verbs.
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Semantic diatheses in Czech and other Slavonic languages
Skwarska, Karolína
In the presented paper different types of so called semantic diatheses in Czech, Russian and Polish are examined. Diathesis is understood as a relation between two constructions of the same situational content and one verb lexeme, which are syntactically structured in different ways. The comparative approach is emphasized – the differences among languages are studied on surface and deep layers. We analyze certain semantic groups of verbs and their ability to function as a basic member of specific diatheses. Very complicated relations are demonstrated on lexemes léčit, prořezat and its Polish and Russian counterparts.
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