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Pattern Localization in Time Series through Signal-To-Model Alignment in Latent Space

Citation Author(s):
Steven Van Vaerenbergh, Ignacio Santamaría, Víctor Elvira, Matteo Salvatori
Submitted by:
Steven Van Vaer...
Last updated:
12 April 2018 - 11:50am
Document Type:
Poster
Document Year:
2018
Event:
Presenters:
Ignacio Santamaria
Paper Code:
3652
 

In this paper, we study the problem of locating a predefined sequence of patterns in a time series. In particular, the studied scenario assumes a theoretical model is available that contains the expected locations of the patterns. This problem is found in several contexts, and it is commonly solved by first synthesizing a time series from the model, and then aligning it to the true time series through dynamic time warping. We propose a technique that increases the similarity of both time series before aligning them, by mapping them into a latent correlation space. The mapping is learned from the data through a machine-learning setup. Experiments on data from non-destructive testing demonstrate that the proposed approach shows significant improvements over the state of the art.

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