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

The result's identifiers

  • Result code in 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>

  • Result on the web

    <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>

Alternative languages

  • Result language

    angličtina

  • Original language name

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

  • Original language description

    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.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    IN - Informatics

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2013

  • Confidentiality

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

Data specific for result type

  • Article name in the collection

    TSD 2013

  • ISBN

    978-3-642-40584-6

  • ISSN

    0302-9743

  • e-ISSN

  • Number of pages

    8

  • Pages from-to

    153-160

  • Publisher name

    Springer

  • Place of publication

    Berlin

  • Event location

    Plzeň

  • Event date

    Sep 1, 2013

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article