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Generalized Dictionaries for Multiple Instance Learning
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DOI：10.1007/s11263-015-0831-z.png)
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摘要
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We present a multi-class multiple instance learning (MIL) algorithm using the dictionary learning framework where the data is given in the form of bags. Each bag contains multiple samples, called instances, out of which at least one belongs to the class of the bag. We propose a noisy-OR model and a generalized mean-based optimization framework for learning the dictionaries in the feature space. The proposed method can be viewed as a generalized dictionary learning algorithm since it reduces to a novel discriminative dictionary learning framework when there is only one instance in each bag. Various experiments using popular vision-related MIL datasets as well as the UNBC-McMaster Pain Shoulder Archive database show that the proposed method performs significantly better than the existing methods.
Keyword:
Sparse coding
Multiple instance learning
Dictionary learning
Object recognition
Pain detection
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4.0K
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