Philgoo Han writeup of Sutton and McCallum

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This is a review of Sutton_2004_collective_segmentation_and_labeling_of_distant_entities_in_information_extraction by user:Ironfoot.

  • Optimizing joint prob. dist.(HMM) -> optimizing cond. dist.(CRF) -> long distance dependency(skip-chain CRF)
    • Connect edges in probabilistic structure between similar tokens
    • Now the structure contains loops, approximate inference
      • How much would be reasonably accurate. This would have been an important factor for result analysis.
    • As the result shows this algorithm seems to work good on locations and spearkers
    • However low in stime, etime
      • Might the algorithm try to make every time token consistent? (that is all into stime or all into etime)