TOP-DOWN FEEDBACK IN AN HMAX-LIKE CORTICAL MODEL OF OBJECT PERCEPTION BASED ON HIERARCHICAL BAYESIAN NETWORKS AND BELIEF PROPAGATION.

Top-down feedback in an HMAX-like cortical model of object perception based on hierarchical Bayesian networks and belief propagation.

Hierarchical generative models, such as Bayesian networks, and belief propagation have been shown to provide a theoretical framework that can account for perceptual processes, including feedforward recognition and feedback modulation.The framework explains both psychophysical and physiological experimental data and maps well onto the hierarchical d

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Colorectal Cancer "Methylator Phenotype": Fact or Artifact?

It has been proposed that human colorectal tumors can be classified into two groups: one Gear in which methylation is rare, and another with methylation of several loci associated with a "CpG island methylated phenotype (CIMP)," characterized by preferential proximal location in the colon, but otherwise poorly defined.There is considerable overlap

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