DAY 2 11:30-12:00 JST Main Room D
Ja
Streaming

Improving Smartphone UI Design with a Mathematical Approach: In-house Use Case of the Tap Success Rate Estimation Tool "Tappy"

Small UI elements such as buttons and links are difficult to operate, but the inability to quantitatively study operability has been a problem for designers. Using our tool suite “Tappy,” we can estimate tap success rates with high accuracy based on the size of UI elements, and identify areas where links are too small or buttons are unnecessarily taking up too much screen space. This talk includes the following contents.

  • How to use Tappy
  • Examples of Tappy applications
  • Theoretical background of the tap success rate calculation method.
Presentation Materials Video (Available Soon)

Speaker

Yamanaka Shota

Yamanaka Shota / LY Corporation

Data Group > Data Science Group > LY Research > R&D Department 2 > Human-Computer

  • Link

Senior Researcher at LY Corporation DS Headquarters, LY Corporation R&D. Obtained a Ph.D. in Engineering from Meiji University Graduate School in 2016. Served as a JSPS Research Fellow DC2 from 2015 and as a JSPS Research Fellow PD and Visiting Researcher at the School of Interdisciplinary Mathematical Sciences, Meiji University from 2016, then joined Yahoo Japan Corporation (now LY Corporation) in 2017. Became the Human-Computer Interaction Team Leader in 2022 and continues in this role. Received the Information Processing Society of Japan Yamashita Memorial Research Award (2017), Honorable Mention Awards at ACM CHI 2019 and ACM ISS 2023, and the 2025 IPSJ/ACM Award for Early Career Contributions to Global Research. Interested in user interface research, particularly in modeling motor performance.

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