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A Framework for the Detection of Search and Rescue Patterns Using Shapelet Classification

Department of Informatics & Telematics, Harokopio University of Athens, 17778 Athens, Greece
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Future Internet 2019, 11(9), 192; https://doi.org/10.3390/fi11090192
Received: 20 June 2019 / Revised: 17 August 2019 / Accepted: 2 September 2019 / Published: 4 September 2019
(This article belongs to the Special Issue Emerging Techniques of AI for Mobility Analysis and Mining)
The problem of unmanned supervision of maritime areas has attracted the interest of researchers for the last few years, mainly thanks to the advances in vessel monitoring that the Automatic Identification System (AIS) has brought. Several frameworks and algorithms have been proposed for the management of vessel trajectory data, which focus on data compression, data clustering, classification and visualization, offering a wide variety of solutions from vessel monitoring to automatic detection of complex events. This work builds on our previous work in the topic of automatic detection of Search and Rescue (SAR) missions, by developing and evaluating a methodology for classifying the trajectories of vessels that possibly participate in such missions. The proposed solution takes advantage of a synthetic trajectory generator and a classifier that combines a genetic algorithm (GENDIS) for the extraction of informative shapelets from training data and a transformation to the shapelets’ feature space. Using the generator and several SAR patterns that are formally described in naval operations bibliography, it generates a synthetic dataset that is used to train the classifier. Evaluation on both synthetic and real data has very promising results and helped us to identify vessel SAR maneuvers without putting any effort into manual annotation. View Full-Text
Keywords: shapelets; SAR maneuvers; trajectory generator; classification; pattern mining shapelets; SAR maneuvers; trajectory generator; classification; pattern mining
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Kapadais, K.; Varlamis, I.; Sardianos, C.; Tserpes, K. A Framework for the Detection of Search and Rescue Patterns Using Shapelet Classification. Future Internet 2019, 11, 192.

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