Metric Learning for Temporal Sequence Alignment
Rémi Lajugie · Damien Garreau · Francis Bach · Sylvain Arlot

Tue Dec 9th 07:00 -- 11:59 PM @ Level 2, room 210D #None

In this paper, we propose to learn a Mahalanobis distance to perform alignment of multivariate time series. The learning examples for this task are time series for which the true alignment is known. We cast the alignment problem as a structured prediction task, and propose realistic losses between alignments for which the optimization is tractable. We provide experiments on real data in the audio-to-audio context, where we show that the learning of a similarity measure leads to improvements in the performance of the alignment task. We also propose to use this metric learning framework to perform feature selection and, from basic audio features, build a combination of these with better alignment performance.

Author Information

Rémi Lajugie (Inria/ENS)
Damien Garreau (Max Planck Institute)
Francis Bach (INRIA - Ecole Normale Superieure)
Sylvain Arlot (University Paris-Sud)

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