An Improved Locally Linear Embedding Method for Feature Extraction
In this work, a feature extraction approach based on improved Locally Linear Embedding(LLE) is proposed. In the algorithm, tangent space distance is introduced to LLE, which overcomes the shortcoming of original LLE method based on Euclidean distance. It can satisfy the requirement of locally linear much better and so can express the I/O mapping quality better than classical method. Simulation results are given to demonstrate the effectiveness of the improved LLE method.
W. Zhang and W. J. Zhou, "An Improved Locally Linear Embedding Method for Feature Extraction", Key Engineering Materials, Vols. 467-469, pp. 487-492, 2011