Search Results for author: Kyle Luther

Found 9 papers, 0 papers with code

DDGM: Solving inverse problems by Diffusive Denoising of Gradient-based Minimization

no code implementations11 Jul 2023 Kyle Luther, H. Sebastian Seung

A recent trend is to train a convolutional net to denoise images, and use this net as a prior when solving the inverse problem.

Denoising SSIM

Stretched sinograms for limited-angle tomographic reconstruction with neural networks

no code implementations16 Jun 2023 Kyle Luther, Sebastian Seung

We compare our method to using a U-Net to directly reconstruct the unstretched tilt views and show that this simple stretching procedure leads to significantly better reconstructions.

Stacked unsupervised learning with a network architecture found by supervised meta-learning

no code implementations6 Jun 2022 Kyle Luther, H. Sebastian Seung

We regard such dependence of unsupervised learning on prior knowledge implicit in network architecture as biologically plausible, and analogous to the dependence of brain architecture on evolutionary history.

Clustering Data Augmentation +1

Sensitivity of sparse codes to image distortions

no code implementations15 Apr 2022 Kyle Luther, H. Sebastian Seung

We show empirically with the MNIST dataset that sparse codes can be very sensitive to image distortions, a behavior that may hinder invariant object recognition.

Object Recognition

Kernel similarity matching with Hebbian neural networks

no code implementations15 Apr 2022 Kyle Luther, H. Sebastian Seung

Recent works have derived neural networks with online correlation-based learning rules to perform \textit{kernel similarity matching}.

Online approximate factorization of a kernel matrix by a Hebbian neural network

no code implementations29 Sep 2021 Kyle Luther, Sebastian Seung

Minimizing this upper bound leads to a minimax optimization, which can be solved via stochastic gradient descent-ascent.

Learning and Segmenting Dense Voxel Embeddings for 3D Neuron Reconstruction

no code implementations21 Sep 2019 Kisuk Lee, Ran Lu, Kyle Luther, H. Sebastian Seung

We show dense voxel embeddings learned via deep metric learning can be employed to produce a highly accurate segmentation of neurons from 3D electron microscopy images.

Metric Learning Segmentation

Sample Variance Decay in Randomly Initialized ReLU Networks

no code implementations13 Feb 2019 Kyle Luther, H. Sebastian Seung

Before training a neural net, a classic rule of thumb is to randomly initialize the weights so the variance of activations is preserved across layers.

Learning Metric Graphs for Neuron Segmentation In Electron Microscopy Images

no code implementations31 Jan 2019 Kyle Luther, H. Sebastian Seung

Both empirically and theoretically, it is unclear whether or when deep metric learning is superior to the more conventional approach of directly predicting an affinity graph with a convolutional net.

Electron Microscopy Image Segmentation Image Segmentation +3

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