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Paper Abstract and Keywords
Presentation 2026-03-03 12:10
Estimating Individual Optimal Leisure Activities Based on Lifelog Data and Self-Assessed Happiness
Kazuki Hirano, Takuya Nakata, Sinan Chen, Masahide Nakamura (Kobe Univ) LOIS2025-70
Abstract (in Japanese) (See Japanese page) 
(in English) We developed an app that lets users log leisure activities and subjective well-being as lifelog data. Each person’s leisure records are classified into three categories, and we perform multiple regression analysis with time spent in each category as explanatory variables and the subjective well-being score as the dependent variable.
This enables estimation of leisure-activity tendencies that are likely to improve an individual’s well-being. In a preliminary evaluation, the effects of leisure categories on subjective well-being differed across participants, and even within the same category, both the magnitude and direction of contribution varied by individual. These results suggest that our method can visualize personalized leisure patterns that enhance well-being and support evidence-based self-care and leisure planning under limited time constraints.
Keyword (in Japanese) (See Japanese page) 
(in English) Lifelog / Subjective Well-Being / Leisure Activity / Self-care / Individual Differences / Multiple Regression Analysis / Leisure Planning Support /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 375, LOIS2025-70, pp. 126-131, March 2026.
Paper # LOIS2025-70 
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 LOIS2025-70

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) Estimating Individual Optimal Leisure Activities Based on Lifelog Data and Self-Assessed Happiness 
Sub Title (in English)  
Keyword(1) Lifelog  
Keyword(2) Subjective Well-Being  
Keyword(3) Leisure Activity  
Keyword(4) Self-care  
Keyword(5) Individual Differences  
Keyword(6) Multiple Regression Analysis  
Keyword(7) Leisure Planning Support  
Keyword(8)  
1st Author's Name Kazuki Hirano  
1st Author's Affiliation Kobe University (Kobe Univ)
2nd Author's Name Takuya Nakata  
2nd Author's Affiliation Kobe University (Kobe Univ)
3rd Author's Name Sinan Chen  
3rd Author's Affiliation Kobe University (Kobe Univ)
4th Author's Name Masahide Nakamura  
4th Author's Affiliation Kobe University (Kobe Univ)
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Speaker Author-1 
Date Time 2026-03-03 12:10:00 
Presentation Time 25 minutes 
Registration for LOIS 
Paper # LOIS2025-70 
Volume (vol) vol.125 
Number (no) no.375 
Page pp.126-131 
#Pages 6 
Date of Issue 2026-02-23 (LOIS) 

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