25/04/2020

Optimizing User Interface Layouts via Gradient Descent

Peitong Duan, Casimir Wierzynski, Lama Nachman

Keywords: optimization, data-driven design, gradient descent, deep learning, mobile interfaces, lstm, performance modeling

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Abstract: Automating parts of the user interface (UI) design process has been a longstanding challenge. We present an automated technique for optimizing the layouts of mobile UIs. Our method uses gradient descent on a neural network model of task performance with respect to the model’s inputs to make layout modifications that result in improved predicted error rates and task completion times. We start by extending prior work on neural network based performance prediction to 2-dimensional mobile UIs with an expanded interaction space. We then apply our method to two UIs, including one that the model had not been trained on, to discover layout alternatives with significantly improved predicted performance. Finally, we confirm these predictions experimentally, showing improvements up to 9.2 percent in the optimized layouts. This demonstrates the algorithm’s efficacy in improving the task performance of a layout, and its ability to generalize and improve layouts of new interfaces.

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