[rede.APPIA] THIS ONE ! – DaSSWeb – Data Science and Statistics Webinar – 15 October – Gilbert Saporta – Sparse Correspondence Analysis for Contingency Tables

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DaSSWeb – Data Science and Statistics Webinar

 

Tuesday, 15 October, 14:30 (WEST)

 

Speaker

Gilbert Saporta

CNAM, Paris, France


Title

Sparse Correspondence Analysis for Contingency Tables

 

Zoom link

Abstract

We propose sparse variants of correspondence analysis (CA) for large contingency tables like documents-terms matrices used in text mining. By seeking to obtain many zero coefficients, sparse CA remedies to the difficulty of interpreting CA results when the size of the table is large. Since CA is a double weighted PCA (for rows and columns) or a weighted generalized SVD, we adapt known sparse versions of these methods with specific developments to obtain orthogonal solutions and to tune the sparseness parameters. We distinguish two cases depending on whether sparseness is asked for both rows and columns, or only for one set.

 

More information at

[rede.APPIA] CFP [Extended Deadline is October 13]: DATA STREAMS TRACK – ACM SAC 2025

===========================
ACM SAC 2025 Data Streams track
Due to several requests, the deadline has been extended by 2 weeks: abifet.github.io/SAC2025/
Paper Submission: October 13, 2024 (Extended Deadline)
Please submit your contribution via SAC 2025 Webpage: easychair.org/conferences/?conf=sac-2025
===========================
Carlos Ferreira
ISEP | Instituto Superior de Engenharia do Porto Rua Dr. António Bernardino de Almeida, 431 4249-015 Porto – PORTUGAL tel. +351 228 340 500 | fax +351 228 321 159 mail@isep.ipp.pt | www.isep.ipp.pt
— Esta mensagem foi enviada para a rede APPIA, que engloba os associados da APPIA. Se desejar deixar de receber este tipo de mensagens, p.f. envie um email para appia [at] appia [ponto] pt

[rede.APPIA] CFP: DATA STREAMS TRACK – ACM SAC 2025

===========================
ACM SAC 2025 Data Streams track
Due to several requests, the deadline has been extended by 2 weeks: abifet.github.io/SAC2025/
Paper Submission: October 4, 2024
Please submit your contribution via SAC 2025 Webpage: easychair.org/conferences/?conf=sac-2025
===========================
Carlos Ferreira
ISEP | Instituto Superior de Engenharia do Porto Rua Dr. António Bernardino de Almeida, 431 4249-015 Porto – PORTUGAL tel. +351 228 340 500 | fax +351 228 321 159 mail@isep.ipp.pt | www.isep.ipp.pt
— Esta mensagem foi enviada para a rede APPIA, que engloba os associados da APPIA. Se desejar deixar de receber este tipo de mensagens, p.f. envie um email para appia [at] appia [ponto] pt

[rede.APPIA] Fwd: Forum Beyond Compliance 2024: Research ethics in a digital age – Call for participation

;text-indent:0px;text-transform:none;word-spacing:0px;white-space:normal;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial”>Forum Beyond Compliance 2024: Research ethics in a digital age (https://www.ercim.eu/beyond-compliance)
Budapest, October 14 and 15, 2024

Call for participation (in person or on line)
For the third edition of the Forum, co-organized by ERCIM, SZTAKI and the CCNE-numérique, the program will consist of invited presentations, invited contributions to round tables, and a tutorial session.
The program will be structured into 6 topical sessions focussing on ethical issues about:

– Cultural influences, 

– Democracy, 

– Regulation making, 

– Cooperative agents, 

– Emerging topics; 

– and a Tutorial.

Participation is free but subject to registration.