Search Results for author: Paul Blomstedt

Found 9 papers, 3 papers with code

Federated Stochastic Gradient Langevin Dynamics

1 code implementation23 Apr 2020 Khaoula El Mekkaoui, Diego Mesquita, Paul Blomstedt, Samuel Kaski

We apply conducive gradients to distributed stochastic gradient Langevin dynamics (DSGLD) and call the resulting method federated stochastic gradient Langevin dynamics (FSGLD).

Federated Learning Metric Learning

A High-Performance Implementation of Bayesian Matrix Factorization with Limited Communication

no code implementations6 Apr 2020 Tom Vander Aa, Xiangju Qin, Paul Blomstedt, Roel Wuyts, Wilfried Verachtert, Samuel Kaski

We show that the combination of the two methods gives substantial improvements in the scalability of BMF on web-scale datasets, when the goal is to reduce the wall-clock time.

Recommendation Systems Vocal Bursts Intensity Prediction

Scalable Bayesian Non-linear Matrix Completion

no code implementations31 Jul 2019 Xiangju Qin, Paul Blomstedt, Samuel Kaski

Matrix completion aims to predict missing elements in a partially observed data matrix which in typical applications, such as collaborative filtering, is large and extremely sparsely observed.

Collaborative Filtering Matrix Completion +1

Embarrassingly parallel MCMC using deep invertible transformations

no code implementations11 Mar 2019 Diego Mesquita, Paul Blomstedt, Samuel Kaski

While MCMC methods have become a main work-horse for Bayesian inference, scaling them to large distributed datasets is still a challenge.

Bayesian Inference

Distributed Bayesian Matrix Factorization with Limited Communication

no code implementations2 Mar 2017 Xiangju Qin, Paul Blomstedt, Eemeli Leppäaho, Pekka Parviainen, Samuel Kaski

Bayesian matrix factorization (BMF) is a powerful tool for producing low-rank representations of matrices and for predicting missing values and providing confidence intervals.

Bayesian inference in hierarchical models by combining independent posteriors

no code implementations30 Mar 2016 Ritabrata Dutta, Paul Blomstedt, Samuel Kaski

Hierarchical models are versatile tools for joint modeling of data sets arising from different, but related, sources.

Bayesian Inference

A Bayesian length-based population dynamics model for northern shrimp (Pandalus Borealis)

1 code implementation29 Sep 2015 Paul Blomstedt, Jarno Vanhatalo, Mats Ulmestrand, Anna Gårdmark, Samu Mäntyniemi

We introduce a fully length-based Bayesian model for the population dynamics of northern shrimp (Pandalus Borealis).

Applications

Modelling-based experiment retrieval: A case study with gene expression clustering

no code implementations19 May 2015 Paul Blomstedt, Ritabrata Dutta, Sohan Seth, Alvis Brazma, Samuel Kaski

For retrieval of gene expression experiments, we use a probabilistic model called product partition model, which induces a clustering of genes that show similar expression patterns across a number of samples.

Clustering Retrieval

Expectation propagation as a way of life: A framework for Bayesian inference on partitioned data

2 code implementations16 Dec 2014 Aki Vehtari, Andrew Gelman, Tuomas Sivula, Pasi Jylänki, Dustin Tran, Swupnil Sahai, Paul Blomstedt, John P. Cunningham, David Schiminovich, Christian Robert

A common divide-and-conquer approach for Bayesian computation with big data is to partition the data, perform local inference for each piece separately, and combine the results to obtain a global posterior approximation.

Bayesian Inference

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