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Learning Tree Conditional Random Fields

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by Joseph K. Bradley , Carlos Guestrin
Citations:20 - 1 self
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BibTeX

@MISC{Bradley_learningtree,
    author = {Joseph K. Bradley and Carlos Guestrin},
    title = {Learning Tree Conditional Random Fields},
    year = {}
}

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Abstract

We examine maximum spanning tree-based methods for learning the structure of tree Conditional Random Fields (CRFs) P (Y|X). We use edge weights which take advantage of local inputs X and thus scale to large problems. For a general class of edge weights, we give a negative learnability result. However, we demonstrate that two members of the class–local Conditional Mutual Information and Decomposable Conditional Influence– have reasonable theoretical bases and perform very well in practice. On synthetic data and a large-scale fMRI application, our methods outperform existing techniques. 1.

Keyphrases

tree conditional random field    edge weight    local input    general class    large problem    synthetic data    decomposable conditional influence    negative learnability result    reasonable theoretical base    class local conditional mutual information    tree-based method    large-scale fmri application   

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