Information Extraction - Approaches

Approaches

Three standard approaches are now widely accepted

  • Hand-written regular expressions (perhaps stacked)
  • Using classifiers
    • Generative: naïve Bayes classifier
    • Discriminative: maximum entropy models
  • Sequence models
    • Hidden Markov model
    • CMMs/MEMMs
    • Conditional random fields (CRF) are commonly used in conjunction with IE for tasks as varied as extracting information from research papers to extracting navigation instructions.

Numerous other approaches exist for IE including hybrid approaches that combine some of the standard approaches previously listed.

Read more about this topic:  Information Extraction

Famous quotes containing the word approaches:

    “You should approach Joyce’s Ulysses as the illiterate Baptist preacher approaches the Old Testament: with faith.”
    —William Faulkner (1897–1962)

    “Bloody men are like bloody buses—
    You wait for about a year
    And as soon as one approaches your stop
    Two or three others appear.”
    —Wendy Cope (b. 1945)

    “Someone approaches to say his life is ruined
    and to fall down at your feet
    and pound his head upon the sidewalk.”
    —David Ignatow (b. 1914)