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Short note on two output-dependent hidden Markov models

Xue, JH; Titterington, DM; (2008) Short note on two output-dependent hidden Markov models. PATTERN RECOGN LETT , 29 (9) 1424 - 1426. 10.1016/j.patrec.2008.02.018.

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Abstract

The purpose of this note is to study the assumption of "mutual information independence", which is used by Zhou [Zhou, G.D., 2005. Direct modelling of output context dependence in discriminative hidden Markov model. Pattern Recognition Lett. 26 (5), 545-553] for deriving an output-dependent hidden Markov model, the so-called discriminative HMM (D-HMM), in the context of determining a stochastic optimal sequence of hidden states. The assumption is extended to derive its generative counterpart, the G-HMM. In addition, state-dependent representations for two output-dependent HMMs, namely HMMSDO [Li, Y., 2005. Hidden Markov models with states depending on observations. Pattern Recognition Lett. 26 (7), 977-9841 and D-HMM, are presented. (C) 2008 Elsevier B.V. All rights reserved.

Type: Article
Title: Short note on two output-dependent hidden Markov models
DOI: 10.1016/j.patrec.2008.02.018
Keywords: discriminative models, generative models, mutual information independence, output-dependent hidden Markov model
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Statistical Science
URI: http://discovery.ucl.ac.uk/id/eprint/1324137
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