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Spatio-temporal convolution kernels
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AI
DOI：10.1007/s10994-015-5520-1.png)
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摘要
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Trajectory data of simultaneously moving objects is being recorded in many different domains and applications. However, existing techniques that utilise such data often fail to capture characteristic traits or lack theoretical guarantees. We propose a novel class of spatio-temporal convolution kernels to capture similarities in multi-object scenarios. The abstract kernel is a composition of a temporal and a spatial kernel and its actual instantiations depend on the application at hand. Empirically, we compare our kernels and efficient approximations thereof to baseline techniques for clustering tasks using artificial and real world data from team sports.
Keyword:
Convolution kernel
Spatio-temporal
Trajectory
Soccer
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