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Improved conditional random fields model with multi-trigger embedding for Chinese event extraction.
Ruifang He
Yang Zhang
Tuo Li
Qinghua Hu
Published in:
World Wide Web (2014)
Keyphrases
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conditional random fields
probabilistic model
event extraction
semi markov
hidden markov models
graphical models
random fields
structured prediction
prior knowledge
crf model
information extraction
multi class
higher order
generative model
energy function