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- W4225009710 abstract "A recent paper (Mhaskar (2020)) introduces a straightforward and simple kernel based approximation for manifold learning that does not require the knowledge of anything about the manifold, except for its dimension. In this paper, we examine how the pointwise error in approximation using least squares optimization based on similarly localized kernels depends upon the data characteristics and deteriorates as one goes away from the training data. The theory is presented with an abstract localized kernel, which can utilize any prior knowledge about the data being located on an unknown sub-manifold of a known manifold. We demonstrate the performance of our approach using a publicly available micro-Doppler data set, and investigate the use of different preprocessing measures, kernels, and manifold dimensions. Specifically, it is shown that the localized kernel introduced in the above mentioned paper when used with PCA components leads to a near-competitive performance to deep neural networks, and offers significant improvements in training speed and memory requirements. To demonstrate the fact that our methods are agnostic to the domain knowledge, we examine the classification problem in a simple video data set." @default.
- W4225009710 created "2022-04-29" @default.
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- W4225009710 date "2022-08-01" @default.
- W4225009710 modified "2023-09-26" @default.
- W4225009710 title "A manifold learning approach for gesture recognition from micro-Doppler radar measurements" @default.
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- W4225009710 doi "https://doi.org/10.1016/j.neunet.2022.04.024" @default.
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