Search Results for author: Christopher Aicher

Found 6 papers, 3 papers with code

Adaptively Truncating Backpropagation Through Time to Control Gradient Bias

1 code implementation17 May 2019 Christopher Aicher, Nicholas J. Foti, Emily B. Fox

Truncated backpropagation through time (TBPTT) is a popular method for learning in recurrent neural networks (RNNs) that saves computation and memory at the cost of bias by truncating backpropagation after a fixed number of lags.

Language Modelling

Stochastic Gradient MCMC for Nonlinear State Space Models

2 code implementations29 Jan 2019 Christopher Aicher, Srshti Putcha, Christopher Nemeth, Paul Fearnhead, Emily B. Fox

We evaluate our proposed particle buffered stochastic gradient using stochastic gradient MCMC for inference on both long sequential synthetic and minute-resolution financial returns data, demonstrating the importance of this class of methods.

Bayesian Inference Time Series +1

Approximate Collapsed Gibbs Clustering with Expectation Propagation

no code implementations19 Jul 2018 Christopher Aicher, Emily B. Fox

We develop a framework for approximating collapsed Gibbs sampling in generative latent variable cluster models.

Clustering Time Series +1

Learning Latent Block Structure in Weighted Networks

no code implementations2 Apr 2014 Christopher Aicher, Abigail Z. Jacobs, Aaron Clauset

We then evaluate the WSBM's performance on both edge-existence and edge-weight prediction tasks for a set of real-world weighted networks.

Community Detection Stochastic Block Model

Adapting the Stochastic Block Model to Edge-Weighted Networks

no code implementations24 May 2013 Christopher Aicher, Abigail Z. Jacobs, Aaron Clauset

We generalize the stochastic block model to the important case in which edges are annotated with weights drawn from an exponential family distribution.

Stochastic Block Model

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