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Paper Abstract and Keywords
Presentation 2018-11-05 15:10
[Poster Presentation] Generalized Dirichlet-Process-Means with f-Mean and Analysis of Influence Function
Masahiro Kobayashi, Kazuho Watanabe (Toyohashi Tech.) IBISML2018-50
Abstract (in Japanese) (See Japanese page) 
(in English) DP-means clustering was obtained as an extension of $K$-means clustering. While it is implemented with a simple and efficient algorithm, it can estimate the number of clusters simultaneously. However, DP-means is specifically designed for the average distortion criterion. Therefore, it is vulnerable to outliers in data, and it can cause large maximum distortion in clusters. In this work, we extend the objective function of the DP-means to $f$-separable distortion measures and propose a unified learning algorithm to overcome the above problems by the selection of the function $f$. Furthermore, the influence function of the estimated cluster center is analyzed to evaluate the robustness against outliers. We show the effectiveness of the generalized method by numerical experiments using real dataset.
Keyword (in Japanese) (See Japanese page) 
(in English) Dirichlet-Process-Means / Bregman Divergence / Maximum Distortion / Robustness / Clustering / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 284, IBISML2018-50, pp. 45-52, Nov. 2018.
Paper # IBISML2018-50 
Date of Issue 2018-10-29 (IBISML) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee IBISML  
Conference Date 2018-11-05 - 2018-11-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Citizens Activites Center (Kaderu 2.7) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Information-Based Induction Science Workshop (IBIS2018) 
Paper Information
Registration To IBISML 
Conference Code 2018-11-IBISML 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Generalized Dirichlet-Process-Means with f-Mean and Analysis of Influence Function 
Sub Title (in English)  
Keyword(1) Dirichlet-Process-Means  
Keyword(2) Bregman Divergence  
Keyword(3) Maximum Distortion  
Keyword(4) Robustness  
Keyword(5) Clustering  
1st Author's Name Masahiro Kobayashi  
1st Author's Affiliation Toyohashi University of Technology (Toyohashi Tech.)
2nd Author's Name Kazuho Watanabe  
2nd Author's Affiliation Toyohashi University of Technology (Toyohashi Tech.)
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Speaker Author-1 
Date Time 2018-11-05 15:10:00 
Presentation Time 180 minutes 
Registration for IBISML 
Paper # IBISML2018-50 
Volume (vol) vol.118 
Number (no) no.284 
Page pp.45-52 
Date of Issue 2018-10-29 (IBISML) 

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