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Paper Abstract and Keywords
Presentation 2026-03-02 13:50
A Study on Visualizing Social Connections of Older Adults Using a VA Listening Service
Daito Kamata, Akinori Matsukawa, Nahyun Kim, Takuya Nakata, Keiko Katagiri, Masahide Nakamura (Kobe Univ.) LOIS2025-56
Abstract (in Japanese) (See Japanese page) 
(in English) With the rapid aging of society in Japan, weakened social connections among older adults living alone have become a serious issue. This study proposes a method to capture and visualize social ties using dialogue logs from a virtual agent listening service, where interaction information based on 4W1H is automatically extracted by an LLM and stored in a database. Experiments using two weeks of dialogue logs confirmed that interaction records and social connection graphs can be generated, while subjective elements such as emotions and closeness require further improvement.
Keyword (in Japanese) (See Japanese page) 
(in English) Virtual Agent Listening Service / LLM / Social Ties / Older Adults / Isolation / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 375, LOIS2025-56, pp. 44-51, March 2026.
Paper # LOIS2025-56 
Date of Issue 2026-02-23 (LOIS) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 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)
Download PDF LOIS2025-56

Conference Information
Committee LOIS  
Conference Date 2026-03-02 - 2026-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To LOIS 
Conference Code 2026-03-LOIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Visualizing Social Connections of Older Adults Using a VA Listening Service 
Sub Title (in English)  
Keyword(1) Virtual Agent Listening Service  
Keyword(2) LLM  
Keyword(3) Social Ties  
Keyword(4) Older Adults  
Keyword(5) Isolation  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Daito Kamata  
1st Author's Affiliation Kobe University (Kobe Univ.)
2nd Author's Name Akinori Matsukawa  
2nd Author's Affiliation Kobe University (Kobe Univ.)
3rd Author's Name Nahyun Kim  
3rd Author's Affiliation Kobe University (Kobe Univ.)
4th Author's Name Takuya Nakata  
4th Author's Affiliation Kobe University (Kobe Univ.)
5th Author's Name Keiko Katagiri  
5th Author's Affiliation Kobe University (Kobe Univ.)
6th Author's Name Masahide Nakamura  
6th Author's Affiliation Kobe University (Kobe Univ.)
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Speaker Author-1 
Date Time 2026-03-02 13:50:00 
Presentation Time 25 minutes 
Registration for LOIS 
Paper # LOIS2025-56 
Volume (vol) vol.125 
Number (no) no.375 
Page pp.44-51 
#Pages 8 
Date of Issue 2026-02-23 (LOIS) 

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