Evolving natural language grammars without supervision

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@InProceedings{Araujo:2010:cec,
  author =       "Lourdes Araujo and Jesus Santamaria",
  title =        "Evolving natural language grammars without
                 supervision",
  booktitle =    "IEEE Congress on Evolutionary Computation (CEC 2010)",
  year =         "2010",
  address =      "Barcelona, Spain",
  month =        "18-23 " # jul,
  publisher =    "IEEE Press",
  keywords =     "genetic algorithms, genetic programming",
  isbn13 =       "978-1-4244-6910-9",
  abstract =     "Unsupervised grammar induction is one of the most
                 difficult works of language processing. Its goal is to
                 extract a grammar representing the language structure
                 using texts without annotations of this structure. We
                 have devised an evolutionary algorithm which for each
                 sentence evolves a population of trees that represent
                 different parse trees of that sentence. Each of these
                 trees represent a part of a grammar. The evaluation
                 function takes into account the contexts in which each
                 sequence of Part-Of-Speech tags (POSseq) appears in the
                 training corpus, as well as the frequencies of those
                 POSseqs and contexts. The grammar for the whole
                 training corpus is constructed in an incremental
                 manner. The algorithm has been evaluated using a well
                 known Annotated English corpus, though the annotation
                 have only been used for evaluation purposes. Results
                 indicate that the proposed algorithm is able to improve
                 the results of a classical optimisation algorithm, such
                 as EM (Expectation Maximisation), for short grammar
                 constituents (right side of the grammar rules), and its
                 precision is better in general.",
  DOI =          "doi:10.1109/CEC.2010.5586291",
  notes =        "WCCI 2010. Also known as \cite{5586291}",
}

Genetic Programming entries for Lourdes Araujo Jesus Santamaria

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