Search Results for author: James Saunderson

Found 4 papers, 2 papers with code

A Projection Method for Metric-Constrained Optimization

1 code implementation5 Jun 2018 Nate Veldt, David Gleich, Anthony Wirth, James Saunderson

We outline a new approach for solving optimization problems which enforce triangle inequalities on output variables.

Clustering Graph Clustering

Estimating the Spectral Density of Large Implicit Matrices

no code implementations9 Feb 2018 Ryan P. Adams, Jeffrey Pennington, Matthew J. Johnson, Jamie Smith, Yaniv Ovadia, Brian Patton, James Saunderson

However, naive eigenvalue estimation is computationally expensive even when the matrix can be represented; in many of these situations the matrix is so large as to only be available implicitly via products with vectors.

Semidefinite approximations of the matrix logarithm

1 code implementation2 May 2017 Hamza Fawzi, James Saunderson, Pablo A. Parrilo

As such, we introduce strategies for constructing semidefinite approximations that we expect will be useful, more generally, for studying the approximation power of functions with small semidefinite representations.

Optimization and Control

Analyzing Hogwild Parallel Gaussian Gibbs Sampling

no code implementations NeurIPS 2013 Matthew Johnson, James Saunderson, Alan Willsky

Sampling inference methods are computationally difficult to scale for many models in part because global dependencies can reduce opportunities for parallel computation.

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