Incorporating Non-local Information into Information Extraction Systems by Gibbs Sampling

By Jenny Rose Finkel, Trond Grenager, Christopher D. Manning. 2005

3,464 citations recorded by the source corpus.

Most current statistical natural language processing models use only local features so as to permit dynamic programming in inference, but this makes them unable to fully account for the long distance structure that is prevalent in language use. We show how to solve this dilemma with Gibbs sampling, a simple Monte Carlo method used to perform approximate inference in factored probabilistic models. By using simulated annealing in place of Viterbi decoding in sequence models such as HMMs, CMMs, and CRFs, it is possible to incorporate non-local structure while preserving tractable inference. We use this technique to augment an existing CRF-based information extraction system with long-distance dependency models, enforcing label consistency and extraction template consistency constraints. This technique results in an error reduction of up to 9% over state-of-the-art systems on two established information extraction tasks.

Subfields: Artificial Intelligence, Natural Language Processing

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The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

  1. Mohit Bansal
  2. Luke S. Zettlemoyer
  3. Percy Liang
  4. Yejin Choi
  5. Noah A. Smith
  6. Jianfeng Gao
  7. Graham Neubig
  8. Christopher D. Manning

In Natural Language Processing

  1. Mohit Bansal
  2. Luke S. Zettlemoyer
  3. Percy Liang
  4. Christopher D. Manning
  5. Yejin Choi
  6. Graham Neubig
  7. Noah A. Smith
  8. Mirella Lapata

Citations in the corpus