University of Applied Sciences St. Pölten Trustworthy Visual Analytics in Clinical Gait Analysis: A Case Study for Patients with Cerebral Palsy Three-dimensional clinical gait analysis is essential for selecting optimal treatment interventions for patients with cerebral palsy (CP), but generates a large amount of time series data. For the automated analysis of these data, machine learning approaches yield promising results. However, due to their black-box nature, such approaches are often mistrusted by clinicians. We propose gaitXplorer, a visual analytics approach for the classification of CP-related gait patterns that integrates Grad-CAM, a well-established explainable artificial intelligence algorithm, for explanations of machine learning classifications. Regions of high relevance for classification are highlighted in the interactive visual interface. The approach is evaluated in a case study with two clinical gait experts. They inspected the explanations for a sample of eight patients using the visual interface and expressed which relevance scores they found trustworthy and which they found suspicious. Overall, the clinicians gave positive feedback on the approach as it allowed them a better understanding of which regions in the data were relevant for the classification. en TEXT conference object Konferenzveröffentlichung preprint Preprint Text Konferenzveröffentlichung Preprint Text conference object preprint Machine learning algorithms Visual analytics Training data Time series analysis Closed box Machine learning 2022 Alexander Rind Djordje Slijepcevic Matthias Zeppelzauer Fabian Unglaube Andreas Kranzl Brian Horsak IEEE