https://www.sumitomolife.co.jp/about/newsrelease/pdf/2025/250619.pdf
生活者のライフログ（歩数、位置情報、移動方法、スマートフォンの利用傾向を含む）のビッグデータに基づき、統計的な知見ならびに医学的知見をもとに、脳の健康に関する複数のドメインでの健康状態をスコア化するモデルを開発（特許出願済み:WO-A1-2024/150513）。
https://www.docomo.ne.jp/binary/pdf/corporate/technology/rd/topics/2022/topics_230126_00.pdf
https://www.docomo.ne.jp/corporate/anatatodocomo/docomoeveryday/article20/
スマートフォンより生活者のライフログ（歩数、位置情報、移動方法、スマートフォンの利用傾向を含む）を取得するモバイルアプリを実装し得られたライフログと、医学・心理学等の専門ドメインで支持される手法で収集したストレス度・注意機能・ウェルビーイング度との統合データを収集。
侵襲ならびに能動的な介入を必要とせず、普段通り生活しているだけで記録されるライフログと各種指標との関係性を分析ならびに推定モデルの構築を行うことで、普段通りスマートフォンを利用して生活して得られるログに基づき、ストレス度合いを評価するAI、集中力を推定するAI、Well-being度を推定するAIを開発。
https://www.docomo.ne.jp/corporate/technology/rd/technical_journal/bn/vol28_4/006.html
This project has designed and evaluated a method for core temperature estimation using wearable sensors. The method combines Gagge's two-node model and sensor readings via wearable and environmental sensors. The model calculates heat stress in a human body, then it estimate core and surface body temperature. The method also leverages actual sensor readings (continuously measured skin temperature or occasionally measured core temperature) to determine optimal parameter set representing one's thermoregulation response (sweating and blood flow increase). The method has been validated through 120 hours of real dataset.
Takashi Hamatani, Akira Uchiyama, Teruo Higashino, “On-line Core Temperature Estimation Using Wearable Sensors During Sport with Variable Exercise Intensity”, IPSJ Journal, Vol.58, No.11, pp.1818-1831, Nov. 2017.
Takashi Hamatani, Akira Uchiyama, Teruo Higashino, “Estimating Core Body Temperature Under Hot Environment Based on Human Thermal Model Using Wearable Sensors”, IPSJ Journal, Vol.56, No.10, pp.2033-2043, Oct. 2015.
FluidMeter is a smartwatch-based system that detects drinking activities and estimates fluid intake using inertial sensors. Tested on 70 participants, it achieved accurate recognition and fluid estimation within 15% error, showing promise for daily health monitoring.
Takashi Hamatani, Moustafa Elhamshary, Akira Uchiyama, Teruo Higashino, "FluidMeter: Gauging the Human Daily Fluid Intake Using Smartwatches" in Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies, Volume 2, Issue 3, Article 113, Sep. 2018
Takashi Hamatani, Moustafa Elhamshary, Akira Uchiyama, Teruo Higashino, “Smartwatch Knows How Much You Drink”, in Proceedings of the 15th Annual International Conference on Mobile Systems, Applications, and Services Companion (MobiSys'17), pp.162, ACM, 2017 (Poster)