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Změny v morfologické anotaci korpusů řady SYN: nové možnosti zkoumání české gramatiky a lexikonu

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Křivan J., Šindlerová J.
Slovo a slovesnost: časopis pro otázky teorie a kultury jazyka (Slovo a slovesnost: A journal for the theory of language and language cultivation)
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2022
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vol. 83
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issue 2
122-145
EN
This paper introduces some major conceptual enhancements to the morphological annotation of the SYN series corpora of the Czech National Corpus. Apart from minor changes in tokenization and in the positional tagset, three major conceptual changes have been applied which affect the representation of various lexical and grammatical patterns. In the paper, we present the actual impact of the changes in linguistic data and search for possibilities in three linguistic areas. First, the treatment of phonic, graphemic, and morphological variants via a two-tier lemma structure is discussed; second, a new approach to periphrastic verb forms, auxiliaries, participles and the interpretation of verbal grammatical categories through a new attribute, called verbtag, is explained; and third, a complex multi-value treatment of multiword tokens is introduced.
2
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Homonymie mezi apelativy a proprii jako problém automatické morfologické analýzy češtiny

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Osolsobě K., Žižková H.
Acta onomastica
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2020
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vol. 61
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issue 1
161-174
EN
The aim of this paper is to provide a corpus-based analysis of one type of Czech proper nouns (type Zubří). We will argue that the adequate annotation (lemmatisation and morphological tagging) of proper nouns type Zubří depends on several circumstances: 1) the coverage of the dictionary of the automatic analyser; 2) the accurate description of the variability of inflexion forms; 3) the non-trivial disambiguation of numerous homonymous word forms. We believe that while meeting the first two conditions is possible, the adequate disambiguation goes beyond the possibilities of automatic morphological analysis.
3
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Korpus českého jazyka 2. poloviny 19. století

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Kučera K., Najbrtová K., Pivoňková K., Řehořková A., Stluka M.
Časopis pro moderní filologii (Journal for Modern Philology)
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2019
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vol. 101
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issue 1
92-98
EN
The paper describes the principles and structure of the one-million-word DIA1900 Corpus built at the Institute of the Czech National Corpus (CNC) in Prague, focused on the language of Czech texts published in the years 1851 to 1900. The DIA1900, planned for publication by June 2020 and to be followed by the DIA1850 (a corpus built around the same principles, with the focus on the first half of the 19th century), observes both the balanced representation of the three major text types (belles lettres — journalistic texts — technical/scientific texts) and the system of morphological tagging implemented in the synchronic corpora included in the CNC project, thus facilitating the diachronic comparison of two stages in the development of Czech. A brief description is given of the structure of the morphological terminology used in the lemmatisation and tagging of the corpus, and of two tools designed to help search the 19th century texts with their fluctuating orthographic consistency combined with phonological and morphological variation characteristics of the language of the period: (1) a multiple select/suggest feature (reminding the user of the existence of non-standard orthographic and phonological variants of the lemma found in the corpus before the lemma search is started) and (2) the position attribute (informing the user of the ambiguous status of a word in the text, resulting from a misprint or misspelling, damaged page etc.).
4
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Nová automatická morfologická analýza češtiny

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Osolsobě K., Hlaváčová J., Petkevič V., Svášek M., Šimandl J.
Naše řeč (Our Speech)
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2017
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vol. 100
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issue 4
225-234
EN
A detailed morphological description of word forms in any language is one of the necessary conditions for the successful automatic processing of linguistic data. The aim of this paper is to present a project aimed at a new description of Czech morphology, especially the planned changes in the tagset. The key changes are as follows: 1) the unambiguous description of variants; 2) the concept of a multiple lemma; 3) the revision of part-of-speech definitions.
5
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Na cestě k lemmatizaci staročeských textů: data, software, aplikace

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Synková P., Lehečka B., Svoboda O.
Studie z aplikované lingvistiky - Studies in Applied Linguistics
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2018
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vol. 9
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issue Special Issue 2018
66-84
EN
This paper introduces the description of Old Czech common nouns developed and used in a tool for tagging and lemmatizing common nouns occurring in transcribed digital editions of Old Czech texts. This description consists of four parts: the first features an overview of all declension type endings (approx. 100 declension patterns), the second part analyses alternations in the morphological basis accompanying declension (approx. 120 types of alternations), the third part deals with formal changes connected mainly with the language’s historical development (approx. 100 formal changes) and, finally, the fourth part contains a list of lemmas extracted from modern dictionaries of Old Czech (approx. 29 000 lemmas). Furthermore, the paper introduces the software developed and used for this purpose, namely i) the tool which makes it possible a) to generate word forms and subsequently search for multiple word forms in the texts at once, b) to create lists of word forms filtered by sequences of characters occurring at the end of the word forms, ii) the tool for assigning a declension pattern to a lemma, and iii) the tool enabling work with large databases. Finally, the paper describes two applications developed on the basis of Old Czech common noun description, i.e. i) a database of Old Czech common noun declension patterns connected with Old Czech dictionaries and the Old Czech text bank, ii) a tool for generating word forms, which is used for the lemmatization and tagging of Old Czech texts.
6
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Korpus DIA1900: jeho koncepce a vytváření

80%
Benešová L., Kučera K., Najbrtová K., Pivoňková K., Stluka M.
Časopis pro moderní filologii (Journal for Modern Philology)
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2023
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vol. 105
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issue 1
121-140
EN
The objective of the paper is to describe the principles for building the onemillionword DIA1900 Corpus consisting of Czech texts published between 1851 and 1900, designed to be both balanced and representative. There are two main goals determining the methods of corpus building and the decision to develop new tools tailored to the special needs of 19th century Czech: 1) to present the variability of Czech in the 2nd half of the 19th century (including spelling, morphology, wordformation) and 2) to link the detected variants to the appropriate lemmas. The paper presents the phases of the processing of the texts, including transcription, manual pre-annotation, as well as the construction of a large morphological dictionary and the selection of a suitable set of paradigms. Further sections are focused on annotation and morphological tagging and manual disambiguation. The objective was to create a gold standard, intended for use in the automatic annotation both of the DIA1900 corpus and the planned corpus of Czech texts of the years 1800–1850.
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