Extracting Named Entities . A Statistical Approach

  • Silva J
  • Kozareva Z
  • Noncheva V
 et al. 
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Abstract

Named entities and more generally Multiword Lexical Units (MWUs) are important for various applications. However, language independent methods for automatically extracting MWUs do not provide us with clean data. So, in this paper we propose a method for selecting possible named entities from automatically extracted MWUs, and later, a statistics-based language in- dependent unsupervised approach is applied to possible named entities in order to cluster them according to their type. Statistical features used by our clustering process are described and motivated. The Model-Based Clustering Analysis (MBCA) software enabled us to obtain dif- ferent clusters for proposed named entities. The method was applied to Bulgarian and English. For some clusters, precision is very high; other clusters still need further refinement. Based on the obtained clusters, it is also possible to classify new possible named entities.

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Authors

  • Joaquim Silva

  • Zornitsa Kozareva

  • Veska Noncheva

  • Gabriel Lopes

  • Departamento De Informática

  • Faculdade De Ciências

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