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The visual system is a hierarchy of processing stages. Each stage in this pathway, in addition to encoding increasingly complex features of the input, performs complex non-linear computations. What is the functional role of these non-linear behaviors and how do we incorporate them into generative mo ...

We develop a probabilistic generative model for representing acoustic event structure at multiple scales via a two-stage hierarchy. The first stage consists of a spiking representation which encodes a sound with a sparse set of kernels at different frequencies positioned precisely in time. The coars ...