Metric learning for multivariate time series analysis using DTW: application to remote sensing and software engineering
In the context of growing availability of data, Time Series are essential for extracting and understanding the evolution of underlying natural, artificial, social or economic phenomena. The related literature has extensively shown that the Dynamic Time Warping, in conjunction with some local/base di...
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ftuvicpubl:oai:dspace.library.uvic.ca:1828/12575 2023-05-15T16:02:05+02:00 Metric learning for multivariate time series analysis using DTW: application to remote sensing and software engineering Salaou, Abdoul-Djawadou Damian, Daniela Gançarski, Pierre 2020 application/pdf http://hdl.handle.net/1828/12575 English en eng http://hdl.handle.net/1828/12575 Available to the World Wide Web multivariate time series metric learning DTW software engineering analysis remote sensing analysis classification Thesis 2020 ftuvicpubl 2022-05-19T06:14:33Z In the context of growing availability of data, Time Series are essential for extracting and understanding the evolution of underlying natural, artificial, social or economic phenomena. The related literature has extensively shown that the Dynamic Time Warping, in conjunction with some local/base distance D (e.g. Euclidean distance ), is an effective similarity measure when univariate TS are considered. However, possible statistical coupling among different dimensions make the generalization of this metric to the multivariate case all but obvious. In practice, multivariate TS are describe by \emph{heterogeneous} features which usually highlight different patterns (correlated, noisy, missing or irrelevant features). Therefore, to obtain a "fair" comparison of the data, DTW needs a D which "understands" the space of the data. Indeed, as the complexity of the data increases, defining such a satisfactory base distance/similarity D becomes very difficult. It seems totally unrealistic to define D manually or on the sole basis of an expert opinion. This has ignited our interest in new distance definition capable of capturing such inter-dimension dependencies by leveraging Distance Metric Learning. DML is to learn a distance metric to better discriminate the data by accentuating the distance relation among objects that are considered as (strongly) similar, or conversely (strongly) dissimilar. This information about (dis)similarity is often provided using must-link and cannot-link constraints between objects. However, in the case of voluminous and complex data, providing such constraints remains an open problem. Therefore, we propose a method, based on canopy clustering, to automatically extract the constraints from the dataset. Graduate Thesis DML University of Victoria (Canada): UVicDSpace |
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University of Victoria (Canada): UVicDSpace |
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ftuvicpubl |
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English |
topic |
multivariate time series metric learning DTW software engineering analysis remote sensing analysis classification |
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multivariate time series metric learning DTW software engineering analysis remote sensing analysis classification Salaou, Abdoul-Djawadou Metric learning for multivariate time series analysis using DTW: application to remote sensing and software engineering |
topic_facet |
multivariate time series metric learning DTW software engineering analysis remote sensing analysis classification |
description |
In the context of growing availability of data, Time Series are essential for extracting and understanding the evolution of underlying natural, artificial, social or economic phenomena. The related literature has extensively shown that the Dynamic Time Warping, in conjunction with some local/base distance D (e.g. Euclidean distance ), is an effective similarity measure when univariate TS are considered. However, possible statistical coupling among different dimensions make the generalization of this metric to the multivariate case all but obvious. In practice, multivariate TS are describe by \emph{heterogeneous} features which usually highlight different patterns (correlated, noisy, missing or irrelevant features). Therefore, to obtain a "fair" comparison of the data, DTW needs a D which "understands" the space of the data. Indeed, as the complexity of the data increases, defining such a satisfactory base distance/similarity D becomes very difficult. It seems totally unrealistic to define D manually or on the sole basis of an expert opinion. This has ignited our interest in new distance definition capable of capturing such inter-dimension dependencies by leveraging Distance Metric Learning. DML is to learn a distance metric to better discriminate the data by accentuating the distance relation among objects that are considered as (strongly) similar, or conversely (strongly) dissimilar. This information about (dis)similarity is often provided using must-link and cannot-link constraints between objects. However, in the case of voluminous and complex data, providing such constraints remains an open problem. Therefore, we propose a method, based on canopy clustering, to automatically extract the constraints from the dataset. Graduate |
author2 |
Damian, Daniela Gançarski, Pierre |
format |
Thesis |
author |
Salaou, Abdoul-Djawadou |
author_facet |
Salaou, Abdoul-Djawadou |
author_sort |
Salaou, Abdoul-Djawadou |
title |
Metric learning for multivariate time series analysis using DTW: application to remote sensing and software engineering |
title_short |
Metric learning for multivariate time series analysis using DTW: application to remote sensing and software engineering |
title_full |
Metric learning for multivariate time series analysis using DTW: application to remote sensing and software engineering |
title_fullStr |
Metric learning for multivariate time series analysis using DTW: application to remote sensing and software engineering |
title_full_unstemmed |
Metric learning for multivariate time series analysis using DTW: application to remote sensing and software engineering |
title_sort |
metric learning for multivariate time series analysis using dtw: application to remote sensing and software engineering |
publishDate |
2020 |
url |
http://hdl.handle.net/1828/12575 |
genre |
DML |
genre_facet |
DML |
op_relation |
http://hdl.handle.net/1828/12575 |
op_rights |
Available to the World Wide Web |
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1766397706814619648 |