Search Results for author: Mohammad Reza Karimi

Found 6 papers, 2 papers with code

Sinkhorn Flow: A Continuous-Time Framework for Understanding and Generalizing the Sinkhorn Algorithm

no code implementations28 Nov 2023 Mohammad Reza Karimi, Ya-Ping Hsieh, Andreas Krause

Many problems in machine learning can be formulated as solving entropy-regularized optimal transport on the space of probability measures.

Isotropic Gaussian Processes on Finite Spaces of Graphs

3 code implementations3 Nov 2022 Viacheslav Borovitskiy, Mohammad Reza Karimi, Vignesh Ram Somnath, Andreas Krause

We propose a principled way to define Gaussian process priors on various sets of unweighted graphs: directed or undirected, with or without loops.

Gaussian Processes Molecular Property Prediction +1

Riemannian stochastic approximation algorithms

no code implementations14 Jun 2022 Mohammad Reza Karimi, Ya-Ping Hsieh, Panayotis Mertikopoulos, Andreas Krause

We examine a wide class of stochastic approximation algorithms for solving (stochastic) nonlinear problems on Riemannian manifolds.

Riemannian optimization

Online Active Model Selection for Pre-trained Classifiers

1 code implementation19 Oct 2020 Mohammad Reza Karimi, Nezihe Merve Gürel, Bojan Karlaš, Johannes Rausch, Ce Zhang, Andreas Krause

Given $k$ pre-trained classifiers and a stream of unlabeled data examples, how can we actively decide when to query a label so that we can distinguish the best model from the rest while making a small number of queries?

Model Selection

Stochastic Submodular Maximization: The Case of Coverage Functions

no code implementations NeurIPS 2017 Mohammad Reza Karimi, Mario Lucic, Hamed Hassani, Andreas Krause

By exploiting that common extensions act linearly on the class of submodular functions, we employ projected stochastic gradient ascent and its variants in the continuous domain, and perform rounding to obtain discrete solutions.

Clustering Stochastic Optimization

Smart broadcasting: Do you want to be seen?

no code implementations22 May 2016 Mohammad Reza Karimi, Erfan Tavakoli, Mehrdad Farajtabar, Le Song, Manuel Gomez-Rodriguez

Many users in online social networks are constantly trying to gain attention from their followers by broadcasting posts to them.

Point Processes

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