Our paper Analysis of error rate in hierarchical menu selection in immersive augmented reality has been accepted for publication in SPIE AR|VR|MR. The work is co-authored by Majid Pourmemar and Charalambos Poullis. The paper is now available: https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12449/124491L/Analysis-of-error-rate-in-hierarchical-menu-selection-in-immersive/10.1117/12.2648315.short?SSO=1&tab=ArticleLink
TL;DR: When selecting hierarchical menus with hand gestures, the error rate is significantly higher than when using a desktop environment or controllers. Consequently, UI designers will be able to create more effective user interfaces if they can assess the difficulty of a hierarchical menu design. We present a validated index for estimating the hierarchical menu selection error with hand gestures and head-gaze as input modalities.