Title
Unsupervised Interpretable Pattern Discovery in Time Series Using Autoencoders.
Abstract
We study the use of feed-forward convolutional neural networks for the unsupervised problem of mining recurrent temporal patterns mixed in multivariate time series. Traditional convolutional autoencoders lack interpretability for two main reasons: the number of patterns corresponds to the manually-fixed number of convolution filters, and the patterns are often redundant and correlated. To recover clean patterns, we introduce different elements in the architecture, including an adaptive rectified linear unit function that improves patterns interpretability, and a group-lasso regularizer that helps automatically finding the relevant number of patterns. We illustrate the necessity of these elements on synthetic data and real data in the context of activity mining in videos.
Year
DOI
Venue
2016
10.1007/978-3-319-49055-7_38
Lecture Notes in Computer Science
Field
DocType
Volume
Interpretability,Data mining,Rectifier (neural networks),Stochastic gradient descent,Pattern recognition,Computer science,Convolutional neural network,Convolution,Multivariate statistics,Mean squared error,Synthetic data,Artificial intelligence
Conference
10029
ISSN
Citations 
PageRank 
0302-9743
0
0.34
References 
Authors
19
4
Name
Order
Citations
PageRank
Kevin Bascol100.34
Rémi Emonet2617.60
Élisa Fromont319225.51
Jean-marc Odobez41641110.52