%0 Journal Article %1 marti2016optimal %A Marti, Gautier %A Andler, Sébastien %A Nielsen, Frank %A Donnat, Philippe %D 2016 %K copulas optimal-transport %R 10.1109/SSP.2016.7551770 %T Optimal Transport vs. Fisher-Rao distance between Copulas for Clustering Multivariate Time Series %U http://arxiv.org/abs/1604.08634 %X We present a methodology for clustering N objects which are described by multivariate time series, i.e. several sequences of real-valued random variables. This clustering methodology leverages copulas which are distributions encoding the dependence structure between several random variables. To take fully into account the dependence information while clustering, we need a distance between copulas. In this work, we compare renowned distances between distributions: the Fisher-Rao geodesic distance, related divergences and optimal transport, and discuss their advantages and disadvantages. Applications of such methodology can be found in the clustering of financial assets. A tutorial, experiments and implementation for reproducible research can be found at www.datagrapple.com/Tech.

@article{marti2016optimal, abstract = {We present a methodology for clustering N objects which are described by multivariate time series, i.e. several sequences of real-valued random variables. This clustering methodology leverages copulas which are distributions encoding the dependence structure between several random variables. To take fully into account the dependence information while clustering, we need a distance between copulas. In this work, we compare renowned distances between distributions: the Fisher-Rao geodesic distance, related divergences and optimal transport, and discuss their advantages and disadvantages. Applications of such methodology can be found in the clustering of financial assets. A tutorial, experiments and implementation for reproducible research can be found at www.datagrapple.com/Tech.}, added-at = {2019-12-11T14:37:45.000+0100}, author = {Marti, Gautier and Andler, Sébastien and Nielsen, Frank and Donnat, Philippe}, biburl = {https://www.bibsonomy.org/bibtex/2ec1ecab3d1cc9fee3200ebeb292b93d9/kirk86}, description = {[1604.08634] Optimal Transport vs. Fisher-Rao distance between Copulas for Clustering Multivariate Time Series}, doi = {10.1109/SSP.2016.7551770}, interhash = {a1306f7f5cab503f477872a8dd91b515}, intrahash = {ec1ecab3d1cc9fee3200ebeb292b93d9}, keywords = {copulas optimal-transport}, note = {cite arxiv:1604.08634Comment: Accepted at IEEE Workshop on Statistical Signal Processing (SSP 2016)}, timestamp = {2019-12-11T14:37:45.000+0100}, title = {Optimal Transport vs. Fisher-Rao distance between Copulas for Clustering Multivariate Time Series}, url = {http://arxiv.org/abs/1604.08634}, year = 2016 }