CRF-Based Czech named Entity Recognizer and Consolidation of Czech NER Research

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F13%3A43919438" target="_blank" >RIV/49777513:23520/13:43919438 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/978-3-642-40585-3_20" target="_blank" >http://dx.doi.org/10.1007/978-3-642-40585-3_20</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-642-40585-3_20" target="_blank" >10.1007/978-3-642-40585-3_20</a>

Jazyk výsledku

angličtina

Název v původním jazyce

CRF-Based Czech named Entity Recognizer and Consolidation of Czech NER Research

Popis výsledku v původním jazyce

In this paper, we present our effort to consolidate and push further the named entity recognition (NER) research for the Czech language. The research in Czech is based upon a non-standard basis. Some systems are constructed to provide hierarchical outputs whereas the rests give flat entities. Direct comparison among these system is therefore impossible. Our first goal is to tackle this issue. We build our own NER system based upon conditional random fields (CRF) model. It is constructed to output eitherflat or hierarchical named entities thus enabling an evaluation with all the known systems for Czech language. We show a 3.5 -- 11% absolute performance increase when compared to previously published results. As a last step we put our system in the context of the research for other languages. We show results for English, Spanish and Dutch corpora. We can conclude that our system provides solid results when compared to the foreign state of the art.

Název v anglickém jazyce

CRF-Based Czech named Entity Recognizer and Consolidation of Czech NER Research

Popis výsledku anglicky

In this paper, we present our effort to consolidate and push further the named entity recognition (NER) research for the Czech language. The research in Czech is based upon a non-standard basis. Some systems are constructed to provide hierarchical outputs whereas the rests give flat entities. Direct comparison among these system is therefore impossible. Our first goal is to tackle this issue. We build our own NER system based upon conditional random fields (CRF) model. It is constructed to output eitherflat or hierarchical named entities thus enabling an evaluation with all the known systems for Czech language. We show a 3.5 -- 11% absolute performance increase when compared to previously published results. As a last step we put our system in the context of the research for other languages. We show results for English, Spanish and Dutch corpora. We can conclude that our system provides solid results when compared to the foreign state of the art.

Druh

D - Stať ve sborníku

CEP obor

IN - Informatika

OECD FORD obor

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Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

TSD 2013

ISBN

978-3-642-40584-6

ISSN

0302-9743

e-ISSN

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Počet stran výsledku

8

Strana od-do

153-160

Název nakladatele

Springer

Místo vydání

Berlin

Místo konání akce

Plzeň

Datum konání akce

1. 9. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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