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Dmitri B. Chklovskii

5 accepted papers

2023

An Online Algorithm for Contrastive Principal Component Analysis

ICASSP 2023accepted

Finding informative low-dimensional representations that can be computed efficiently in large datasets is an important problem in data analysis. Recently, contrastive Principal Component Analysis (cPCA) was proposed as a more informative generalization of PCA that takes advantage of contrastive lear…

Cited by 0SourceScholar
2020

A Biologically Plausible Neural Network for Slow Feature Analysis

NeurIPS 2020poster

Learning latent features from time series data is an important problem in both machine learning and brain function. One approach, called Slow Feature Analysis (SFA), leverages the slowness of many salient features relative to the rapidly varying input signals. Furthermore, when trained on naturalist…

2020

A simple normative network approximates local non-Hebbian learning in the cortex

NeurIPS 2020poster

To guide behavior, the brain extracts relevant features from high-dimensional data streamed by sensory organs. Neuroscience experiments demonstrate that the processing of sensory inputs by cortical neurons is modulated by instructive signals which provide context and task-relevant information. Here,…

Cited by 20SourcePDFScholar
2019

Strip the Stripes: Artifact Detection and Removal for Scanning Electron Microscopy Imaging

ICASSP 2019accepted

Scanning Electron Microscopy (SEM) is a popular high resolution imaging modality for biological samples that has recently been applied to neural circuit reconstruction. For this application, relatively large volumes are imaged by repeatedly ablating away the exposed surface of the volume with a focu…

Cited by 0SourceScholar
2015

Online computation of sparse representations of time varying stimuli using a biologically motivated neural network

ICASSP 2015accepted

Natural stimuli are highly redundant, possessing significant spatial and temporal correlations. While sparse coding has been proposed as an efficient strategy employed by neural systems to encode sensory stimuli, the underlying mechanisms are still not well understood. Most previous approaches model…

Cited by 0SourceScholar