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- W4300607029 abstract "In kernel methods, temporal information on the data is commonly included by using time-delayed embeddings as inputs. Recently, an alternative formulation was proposed by defining a gamma-filter explicitly in a reproducing kernel Hilbert space, giving rise to a complex model where multiple kernels operate on different temporal combinations of the input signal. In the original formulation, the kernels are then simply combined to obtain a single kernel matrix (for instance by averaging), which provides computational benefits but discards important information on the temporal structure of the signal. Inspired by works on multiple kernel learning, we overcome this drawback by considering the different kernels separately. We propose an efficient strategy to adaptively combine and select these kernels during the training phase. The resulting batch and online algorithms automatically learn to process highly nonlinear temporal information extracted from the input signal, which is implicitly encoded in the kernel values. We evaluate our proposal on several artificial and real tasks, showing that it can outperform classical approaches both in batch and online settings." @default.
- W4300607029 created "2022-10-03" @default.
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- W4300607029 date "2017-06-12" @default.
- W4300607029 modified "2023-10-18" @default.
- W4300607029 title "Recursive Multikernel Filters Exploiting Nonlinear Temporal Structure" @default.
- W4300607029 doi "https://doi.org/10.48550/arxiv.1706.03533" @default.
- W4300607029 hasPublicationYear "2017" @default.
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