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64 Publications visible to you, out of a total of 64
Efficient Optimization of Echo State Networks for Time Series Datasets

Abstract

Not specified

Authors: Jacob Reinier Maat, Nikos Gianniotis, Pavlos Protopapas

Date Published: 1st Jul 2018

Publication Type: InProceedings

Photometric redshift estimations

Abstract

Not specified

Author: Kai L. Polsterer

Date Published: 2017

Publication Type: InProceedings

Linear Dimensionality Reduction for Time Series

Abstract (Expand)

Visualisation by dimensionality reduction is an important tool for data exploration. In this work we are interested in visualising time series. To that end we formulate a latent variable model that … mirrors probabilistic principal component analysis (PPCA). However, as opposed to PPCA which maps the latent variables directly to the data space, we first map the latent variables to the parameter space of a recurrent neural network, i.e. each latent projection instantiates a recurrent network. Each instantiated recurrent network in turn is responsible for modelling a time series in the dataset. Hence, each latent variable is indirectly mapped to a time series. Incorporating the recurrent network in the latent variable model helps us account for the temporal nature of the time series and capture their underlying dynamics. The proposed algorithm is demonstrated on two benchmark problems and a real world dataset.

Author: Nikolaos Gianniotis

Date Published: 2017

Publication Type: InProceedings

A spectral model for multimodal redshift estimation

Abstract

Not specified

Authors: Sven D. Kugler, Nikolaos Gianniotis, Kai L. Polsterer

Date Published: 1st Dec 2016

Publication Type: InProceedings

Model-coupled autoencoder for time series visualisation

Abstract

Not specified

Authors: Nikolaos Gianniotis, Sven D. Kügler, Peter Tiňo, Kai L. Polsterer

Date Published: 1st Jun 2016

Publication Type: Journal

Approximate variational inference based on a finite sample of Gaussian latent variables

Abstract

Not specified

Authors: Nikolaos Gianniotis, Christoph Schnörr, Christian Molkenthin, Sanjay Singh Bora

Date Published: 1st May 2016

Publication Type: Journal

An explorative approach for inspecting Kepler data

Abstract

Not specified

Authors: Sven D. Kügler, Nikolaos Gianniotis, Kai L. Polsterer

Date Published: 2016

Publication Type: Journal

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