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• W2890763769 abstract "Finding the nearest subspace is a fundamental problem in many tasks such as recognition, retrieval and optimization. This hard topic has been seldom touched in the literature, except a very few studies that address it using the locality sensitive hashing for subspaces. The existing solutions severely suffer from poor scaling with expensive computational cost or unsatisfying accuracy, when the subspaces originally distribute with arbitrary dimensions. To address these problems, this paper proposes a new and efficient family of locality sensitive hash for linear subspaces of arbitrary dimension. It preserves the angular distances among subspaces by randomly projecting their orthonormal basis and further encoding them with binary codes. The proposed method enjoys fast computation and meanwhile keeps the strong collision probability. Moreover, it owns flexibility to easily balance the performance between the accuracy and efficiency. The experimental results in the tasks of face recognition and video de-duplication demonstrate that the proposed method significantly outperforms the state-of-the-art vector and subspace hashing methods, in terms of both accuracy and efficiency (up to (16times ) speedup)." @default.
• W2890763769 created "2018-09-27" @default.
• W2890763769 creator A5010822701 @default.
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• W2890763769 date "2018-01-01" @default.
• W2890763769 modified "2023-09-25" @default.
• W2890763769 title "Random Angular Projection for Fast Nearest Subspace Search" @default.
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• W2890763769 doi "https://doi.org/10.1007/978-3-030-00776-8_2" @default.
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