Downdating lexicon and language model for automatic transcription of Czech historical spoken documents

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F13%3A%230002791" target="_blank" >RIV/46747885:24220/13:#0002791 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/978-3-642-40585-3_26" target="_blank" >http://dx.doi.org/10.1007/978-3-642-40585-3_26</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-642-40585-3_26" target="_blank" >10.1007/978-3-642-40585-3_26</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Downdating lexicon and language model for automatic transcription of Czech historical spoken documents

Popis výsledku v původním jazyce

This paper deals with the task of adaptation of an existing Czech largevocabulary speech recognition (LVCSR) system to the language used in previous historical epochs (before 1990). The goal is to fit its lexicon and language model (LM) so that the system could be employed for the automatic transcription of old spoken documents in the Czech Radio archive. The main problem is the lack of texts (in electronic form) from the 1945-1990 period. The only available and large enough source is digitized copies of Rud´e Pr´avo, the newspaper of the former Communist party of Czechoslovakia, the actual ruling body in the state. The newspaper has been scanned and converted into text via an OCR software. However, the amount of OCR errors is very high and so we haveto apply several text pre-processing techniques to get a corpus suitable for the lexicon and language model ?downdating? (i.e. adaptation to the past). The proposed techniques helped us a) to reduce the number of out-of-vocabulary strings

Název v anglickém jazyce

Downdating lexicon and language model for automatic transcription of Czech historical spoken documents

Popis výsledku anglicky

This paper deals with the task of adaptation of an existing Czech largevocabulary speech recognition (LVCSR) system to the language used in previous historical epochs (before 1990). The goal is to fit its lexicon and language model (LM) so that the system could be employed for the automatic transcription of old spoken documents in the Czech Radio archive. The main problem is the lack of texts (in electronic form) from the 1945-1990 period. The only available and large enough source is digitized copies of Rud´e Pr´avo, the newspaper of the former Communist party of Czechoslovakia, the actual ruling body in the state. The newspaper has been scanned and converted into text via an OCR software. However, the amount of OCR errors is very high and so we haveto apply several text pre-processing techniques to get a corpus suitable for the lexicon and language model ?downdating? (i.e. adaptation to the past). The proposed techniques helped us a) to reduce the number of out-of-vocabulary strings

Druh

D - Stať ve sborníku

CEP obor

JC - Počítačový hardware a software

OECD FORD obor

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Projekt

<a href="/cs/project/DF11P01OVV013" target="_blank" >DF11P01OVV013: Zpřístupnění archivu Českého rozhlasu pro sofistikované vyhledávání</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

16th International Conference, TSD 2013

ISBN

9783642405846

ISSN

0302-9743

e-ISSN

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Počet stran výsledku

8

Strana od-do

201-208

Název nakladatele

Springer-Verlag Berlin Heidelber

Místo vydání

Germany, Berlin

Místo konání akce

Czech Republic, Pilsen

Datum konání akce

1. 9. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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