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October 2015

Chess Meeting

October 20, 2015 @ 10:00 am - 11:30 am

Saloua Chlaily: Interaction of modalities By using several modalities we aim at enhancing the quality and accuracy of the observed signal. However, the expected improvement is not always obtained. In this talk, we consider a simple model of two modalities and analyze their pertinence and interrelations, in term of mutual information, to understand what can deteriorate the estimation of the target signal. Rafael Ando: Nonlinear blind source separation for chemical sensor arrays based on a polynomial approximation In this presentation…

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November 2015

Defense of Saman NOORZADEH : The extraction of Fetal ECG using Multi-Modality

November 2, 2015 @ 2:00 pm - 3:00 pm

Abstract: Technological development aims at monitoring during pregnancy using the noninvasive fetal electrocardiogram (ECG). This method allows not only to detect fetal heart rate, but also to analyze the morphology of fetal ECG, which is now limited to analysis of the invasive ECG during delivery. However, the noninvasive fetal ECG recorded from the mother’s abdomen is contaminated with several noise sources among which the maternal ECG is the most prominent. That is why this problem is still a challenge in…

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Dr. B. Afsari talks on Riemannian Geometry

November 3, 2015 @ 10:00 am

Dr. B. Afsari (John Hopkins Univ.), invited scientist in the CHESS project, will present two talks on Riemannian Geometry, on Tuesday 3 Nov, from 10:00 to 12:30. The talks are followed by a buffet. Don't forget to register to the talks and the buffet, since the number of places is limited.

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Chess Meeting

November 9, 2015 @ 10:00 am - 11:30 am

Ewaldo Santana ( Laboratory for Biological Information Processing, Federal University of Maranhão, and Dept. of Mathematics, University of State of Maranhão) TITLE: Extraction of Signals With Higuer Order  Temporal Structure Using Correntropy ABSTRACT: This talk addresses the problem of semi-blind extraction of one single desired signal using a priori information about its higher order temporal structure. The approach is based on the maximization of the autocorrentropy function for a given time delay. The a priori information is quantified as a time delay and a size…

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Chess Meeting

November 24, 2015 @ 10:00 am - 11:30 pm

Paolo Zanini Title: Source separation fpr urban planning application "A problem of urban planning application through mobile-phone traffic data in the metropolitan area of Milan, Italy, is considered. The aim is to retrieve meaningful information regarding working, residential, and mobility activities around the city. The independent component analysis (ICA) framework is used to model underlying spatial activities as independent spatial sources on a lattice. To incorporate spatial dependence within the spatial sources, a spatial colored ICA (scICA) method is developed.…

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December 2015

Chess Meeting

December 7, 2015 @ 10:00 am - 11:30 am

Talks to define

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January 2016

Chess Meeting

January 15, 2016 @ 1:30 pm - 3:00 pm

Content of the meeting ( in room Chartreuse, at 1:30 pm  ) - Scientific talk presented by Victor Maurandi - Informations - Presentation of newcomers (Victor, Alexandre, Saeed and Elsa) - Drink with the traditional king pie (at about 2:45 pm) More information 

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February 2016

Chess Meeting

February 1, 2016 @ 10:00 am - 11:00 am

Dana Lahat : When blind source separation meets data fusion Abstract: Blind source separation (BSS) is a well-established framework for data analysis. Independent component analysis (ICA) and algorithms such as JADE, SOBI, FastICA and InfoMax, designed in the 1990's, are now regarded as standard analytical tools in a broad range of domains, and are almost synonymous with BSS. However, for various types of real-life data, their underlying assumptions are too restrictive or insufficient. In fact, from the very early days…

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July 2016

Seminar : Massoud Babaie-Zadeh talk

July 21, 2016 @ 3:00 pm - 5:00 pm

Title: “Smoothed L0 (SL0): A fast algorithm for finding the sparse solution of an underdetermined system of linear equations” Abstract: “In this talk, the problem of finding the sparse solution of an underdetermined systems of linear equations (the “sparse recovery” problem) is considered. We first discuss the significance of this problem by mentioning a few of its applications (including Compressed Sensing), and we point out the uniqueness of such a solution. Then, after pointing out that directly finding such a…

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January 2017

Chess Meeting

January 30, 2017 @ 4:00 pm - 5:00 pm

Monday, a special Chess meeting, with only a talk, for the beginning of the year and the leaving of Alexandre Akzenov. It will take place in room Chartreuse at 4pm with some galette des Rois.

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