期刊
ECOLOGICAL MODELLING
卷 222, 期 14, 页码 2191-2201出版社
ELSEVIER
DOI: 10.1016/j.ecolmodel.2011.02.010
关键词
Response behavior; Movement pattern; Transition probability matrix; Emission probability matrix; Central and boundary zones; Behavioral monitoring
类别
Two computational methods were applied to classification of movement patterns of zebrafish (Danio rerio) to elucidate Markov processes in behavioral changes before and after treatment of formaldehyde (0.1 mg/L) in semi-natural conditions. The complex data of the movement tracks were initially classified by the Self-organizing map (SOM) to present different behavioral states of test individuals. Transition probabilities between behavioral states were further evaluated to fit Markov processes by using the hidden Markov model (HMM). Emission transition probability was also obtained from the observed variables (i.e., speed) for training with the HMM. Experimental transition and emission probability matrices were successfully estimated with the HMM for recognizing sequences of behavioral states with accuracy rates in acceptable ranges at central and boundary zones before (77.3-81.2%) and after (70.1-76.5%) treatment. A heuristic algorithm and a Markov model were efficiently combined to analyze movement patterns and could be a means of in situ behavioral monitoring tool. (C) 2011 Elsevier B.V. All rights reserved.
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