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Generalized Zero-Shot Activity Recognition with Embedding-Based Method
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DOI：10.1145/3582690.png)
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Sensor-based human activity recognition aims to recognize the activities performed by people with the sensor readings. Most of existing works in this area rely on supervised classification algorithms, and can only recognize activities covered by the training data. Whereas, in many practical applications, while performing activity recognition, not only the activities covered by the training data, but also some previously unseen activities need to be recognized. In this paper, we study the problem of generalized zero-shot activity recognition. In this problem, the activities that need to be recognized contain both the activities covered by the training data and the previously unseen activities. We firstly give a formulation of this problem, and then propose an embedding-based method to address it. In this method, an embedding-compatibility model is learned. When performing activity recognition, the learned model and the calibrated stacking mechanism are employed. Extensive experiments on publicly available datasets demonstrate the effectiveness of our method.
Keyword:
Generalized zero-shot learning
activity recognition
sensor data
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