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Optimal Feedback Control for Modeling Human-Computer Interaction

Title data

Fischer, Florian ; Fleig, Arthur ; Klar, Markus ; Müller, Jörg:
Optimal Feedback Control for Modeling Human-Computer Interaction.
In: ACM Transactions on Computer-Human Interaction. Vol. 29 (2022) Issue 6 . - 51.
ISSN 1557-7325
DOI: https://doi.org/10.1145/3524122

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Official URL: Volltext

Abstract in another language

Optimal feedback control (OFC) is a theory from the motor control literature that explains how humans move their body to achieve a certain goal, e.g., pointing with the finger. OFC is based on the assumption that humans aim at controlling their body optimally, within the constraints imposed by body, environment, and task. In this article, we explain how this theory can be applied to understanding Human-Computer Interaction (HCI) in the case of pointing. We propose that the human body and computer dynamics can be interpreted as a single dynamical system. The system state is controlled by the user via muscle control signals, and estimated from observations. Between-trial variability arises from signal-dependent control noise and observation noise. We compare four different models from optimal control theory and evaluate to what degree these models can replicate movements in the case of mouse pointing. We introduce a procedure to identify parameters that best explain observed user behavior. To support HCI researchers in simulating, analyzing, and optimizing interaction movements, we provide the Python toolbox OFC4HCI. We conclude that OFC presents a powerful framework for HCI to understand and simulate motion of the human body and of the interface on a moment-by-moment basis.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Optimal Control; OFC; Human-Computer Interaction; Modeling; Parameter Fitting; Aimed Movements; Mouse Pointing; LQR; LQG; Second-order Lag; Minimum Jerk; Intermittent Control
Subject classification: CCS Concepts: Human-centered computing ~ HCI theory, concepts and models
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Computer Science > Chair Applied Computer Science VIII > Chair Applied Computer Science VIII - Univ.-Prof. Dr. Jörg Müller
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Computer Science > Chair Applied Computer Science VIII
Result of work at the UBT: Yes
DDC Subjects: 000 Computer Science, information, general works
000 Computer Science, information, general works > 050 General serials and their indexes
Date Deposited: 29 Mar 2023 05:35
Last Modified: 11 Aug 2023 10:04
URI: https://eref.uni-bayreuth.de/id/eprint/75720

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