A new method for discovering behavior patterns among animal movements

International Journal of Geographical Information Science
By: , and 

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Abstract

Advanced satellite tracking technologies enable biologists to track animal movements at fine spatial and temporal scales. The resultant data present opportunities and challenges for understanding animal behavioral mechanisms. In this paper, we develop a new method to elucidate animal movement patterns from tracking data. Here, we propose the notion of continuous behavior patterns as a concise representation of popular migration routes and underlying sequential behaviors during migration. Each stage in the pattern is characterized in terms of space (i.e., the places traversed during movements) and time (i.e. the time spent in those places); that is, the behavioral state corresponding to a stage is inferred according to the spatiotemporal and sequential context. Hence, the pattern may be interpreted predictably. We develop a candidate generation and refinement framework to derive all continuous behavior patterns from raw trajectories. In the framework, we first define the representative spots to denote the underlying potential behavioral states that are extracted from individual trajectories according to the similarity of relaxed continuous locations in certain distinct time intervals. We determine the common behaviors of multiple individuals according to the spatiotemporal proximity of representative spots and apply a projection-based extension approach to generate candidate sequential behavior sequences as candidate patterns. Finally, the candidate generation procedure is combined with a refinement procedure to derive continuous behavior patterns. We apply an ordered processing strategy to accelerate candidate refinement. The proposed patterns and discovery framework are evaluated through conceptual experiments on both real GPS-tracking and large synthetic datasets.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title A new method for discovering behavior patterns among animal movements
Series title International Journal of Geographical Information Science
DOI 10.1080/13658816.2015.1091462
Volume 30
Issue 5
Year Published 2016
Language English
Publisher Royal Institute of International Affairs
Publisher location London
Contributing office(s) Patuxent Wildlife Research Center
Description 19 p.
First page 929
Last page 947
Online Only (Y/N) N
Additional Online Files (Y/N) N