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- W2963614016 abstract "Many clustering problems in computer vision and other contexts are also classification problems, where each cluster shares a meaningful label. Subspace clustering algorithms in particular are often applied to problems that fit this description, for example with face images or handwritten digits. While it is straightforward to request human input on these datasets, our goal is to reduce this input as much as possible. We present a pairwise-constrained clustering algorithm that actively selects queries based on the union-of-subspaces model. The central step of the algorithm is in querying points of minimum margin between estimated subspaces; analogous to classifier margin, these lie near the decision boundary. We prove that points lying near the intersection of subspaces are points with low margin. Our procedure can be used after any subspace clustering algorithm that outputs an affinity matrix. We demonstrate on several datasets that our algorithm drives the clustering error down considerably faster than the state-of-the-art active query algorithms on datasets with subspace structure and is competitive on other datasets." @default.
- W2963614016 created "2019-07-30" @default.
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- W2963614016 date "2016-01-01" @default.
- W2963614016 modified "2023-09-26" @default.
- W2963614016 title "Leveraging Union of Subspace Structure to Improve Constrained Clustering" @default.
- W2963614016 hasPublicationYear "2016" @default.
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