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Guided Locally Linear Embedding
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DOI：10.1016/j.patrec.2011.02.002.png)
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Abstract
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Nonlinear dimensionality reduction is the problem of retrieving a low-dimensional representation of a manifold that is embedded in a high-dimensional observation space. Locally Linear Embedding (LLE), a prominent dimensionality reduction technique is an unsupervised algorithm; as such, it is not possible to guide it toward modes of variability that may be of particular interest. This paper proposes a supervised variation of LLE. Similar to LLE, it retrieves a low-dimensional global coordinate system that faithfully represents the embedded manifold. Unlike LLE, however, it produces an embedding in which predefined modes of variation are preserved. This can improve several supervised learning tasks including pattern recognition, regression, and data visualization. (C) 2011 Elsevier B.V. All rights reserved.
Keywords:
Supervised dimensionality reduction
Locally Linear Embedding
Classification
Pattern recognition
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