Many high level representations of time series have been proposed for data mining, including Fourier transforms, wavelets, eigenwaves, piecewise polynomial models, etc. Many researchers have also considered symbolic representations of time series, ...
Searching moving object trajectories of video databases has been applied to many fields, such as video data analysis, content-based video retrieval, video scene classification. In this paper, we propose a novel representation of trajectories, called <i>...
In the last decade symbolic representations approaches have shown effectiveness for knowledge discovery in time series, such as the Symbolic Aggregate Approximation (SAX). However, SAX doesn’t preserve the local slope information of the time ...
Association for Computing Machinery
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