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A conditional random field-based model for joint sequence segmentation and classification

Published: 01 June 2013 Publication History

Abstract

In this paper, we consider the problem of joint segmentation and classification of sequences in the framework of conditional random field (CRF) models. To effect this goal, we introduce a novel dual-functionality CRF model: on the first level, the proposed model conducts sequence segmentation, whereas, on the second level, the whole observed sequences are classified into one of the available learned classes. These two procedures are conducted in a joint, synergetic fashion, thus optimally exploiting the information contained in the used model training sequences. Model training is conducted by means of an efficient likelihood maximization algorithm, and inference is based on the familiar Viterbi algorithm. We evaluate the efficacy of our approach considering a real-world application, and we compare its performance to popular alternatives.

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  1. A conditional random field-based model for joint sequence segmentation and classification

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    Published In

    cover image Pattern Recognition
    Pattern Recognition  Volume 46, Issue 6
    June, 2013
    225 pages

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    Elsevier Science Inc.

    United States

    Publication History

    Published: 01 June 2013

    Author Tags

    1. Conditional random field
    2. Sequence classification
    3. Sequence segmentation

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