Скачать или смотреть Masked Reconstruction based Self-Supervision for Human Activity Recognition

Masked Reconstruction based Self-Supervision for Human Activity Recognition
Harish Haresamudram, Apoorva Beedu, Varun Agrawal, Patrick L Grady, Irfan Essa, Judy Hoffman, Thomas Ploetz

ISWC '20: The ACM International Symposium on Wearable Computers 2020
Session: Human Activity Recognition I

Abstract
The ubiquitous availability of wearable sensing devices has rendered large scale collection of movement data a straightforward endeavor. Yet, annotation of these data remains a challenge and as such, publicly available datasets for human activity recognition (HAR) are typically limited in size as well as in variability, which constrains HAR model training and effectiveness. We introduce masked reconstruction as a viable self-supervised pre-training objective for human activity recognition and explore its effectiveness in comparison to state-of-the-art unsupervised learning techniques. In scenarios with small labeled datasets, the pre-training results in improvements over end-to-end learning on two of the four benchmark datasets. This is promising because the pre-training objective can be integrated "as is" into state-of-the-art recognition pipelines to effectively facilitate improved model robustness, and thus, ultimately, leading to better recognition performance.

DOI:: https://doi.org/10.1145/3410531.3414306
WEB:: http://iswc.net/iswc20/

Remote Presentations for The ACM International Symposium on Wearable Computer 2020 (ISWC '20)