Addressing Data Scarcity in Multimodal User State Recognition by Combining Semi-Supervised and Supervised Learning

• URL: http://arxiv.org/abs/2202.03775v1
• Date: Tue, 8 Feb 2022 10:41:41 GMT
• Title: Addressing Data Scarcity in Multimodal User State Recognition by Combining Semi-Supervised and Supervised Learning
• Authors: Hendric Vo{\ss}, Heiko Wersing, Stefan Kopp
• Abstract summary: We present a multimodal machine learning approach for detecting dis-/agreement and confusion states in a human-robot interaction environment. We achieve an average F1-score of 81.1% for dis-/agreement detection with a small amount of labeled data and a large unlabeled data set.
• Score: 1.1688030627514532
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Detecting mental states of human users is crucial for the development of cooperative and intelligent robots, as it enables the robot to understand the user's intentions and desires. Despite their importance, it is difficult to obtain a large amount of high quality data for training automatic recognition algorithms as the time and effort required to collect and label such data is prohibitively high. In this paper we present a multimodal machine learning approach for detecting dis-/agreement and confusion states in a human-robot interaction environment, using just a small amount of manually annotated data. We collect a data set by conducting a human-robot interaction study and develop a novel preprocessing pipeline for our machine learning approach. By combining semi-supervised and supervised architectures, we are able to achieve an average F1-score of 81.1\% for dis-/agreement detection with a small amount of labeled data and a large unlabeled data set, while simultaneously increasing the robustness of the model compared to the supervised approach.

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