Search Results for author: Geoff Gordon

Found 13 papers, 2 papers with code

Decomposed Mutual Information Estimation for Contrastive Representation Learning

no code implementations25 Jun 2021 Alessandro Sordoni, Nouha Dziri, Hannes Schulz, Geoff Gordon, Phil Bachman, Remi Tachet

We propose decomposing the full MI estimation problem into a sum of smaller estimation problems by splitting one of the views into progressively more informed subviews and by applying the chain rule on MI between the decomposed views.

Data Augmentation Dialogue Generation +2

Decomposing Mutual Information for Representation Learning

no code implementations1 Jan 2021 Alessandro Sordoni, Nouha Dziri, Hannes Schulz, Geoff Gordon, Remi Tachet des Combes, Philip Bachman

In this paper, we transform each view into a set of subviews and then decompose the original MI bound into a sum of bounds involving conditional MI between the subviews.

Dialogue Generation Representation Learning

Expressiveness and Learning of Hidden Quantum Markov Models

no code implementations2 Dec 2019 Sandesh Adhikary, Siddarth Srinivasan, Geoff Gordon, Byron Boots

Extending classical probabilistic reasoning using the quantum mechanical view of probability has been of recent interest, particularly in the development of hidden quantum Markov models (HQMMs) to model stochastic processes.

A Reduction from Reinforcement Learning to No-Regret Online Learning

no code implementations14 Nov 2019 Ching-An Cheng, Remi Tachet des Combes, Byron Boots, Geoff Gordon

We present a reduction from reinforcement learning (RL) to no-regret online learning based on the saddle-point formulation of RL, by which "any" online algorithm with sublinear regret can generate policies with provable performance guarantees.

reinforcement-learning Reinforcement Learning (RL)

Learning Hidden Quantum Markov Models

no code implementations24 Oct 2017 Siddarth Srinivasan, Geoff Gordon, Byron Boots

We extend previous work on HQMMs with three contributions: (1) we show how classical hidden Markov models (HMMs) can be simulated on a quantum circuit, (2) we reformulate HQMMs by relaxing the constraints for modeling HMMs on quantum circuits, and (3) we present a learning algorithm to estimate the parameters of an HQMM from data.

Frank-Wolfe Optimization for Symmetric-NMF under Simplicial Constraint

no code implementations20 Jun 2017 Han Zhao, Geoff Gordon

Symmetric nonnegative matrix factorization has found abundant applications in various domains by providing a symmetric low-rank decomposition of nonnegative matrices.

Clustering

Principled Hybrids of Generative and Discriminative Domain Adaptation

no code implementations ICLR 2018 Han Zhao, Zhenyao Zhu, Junjie Hu, Adam Coates, Geoff Gordon

This provides us a very general way to interpolate between generative and discriminative extremes through different choices of priors.

Domain Adaptation

DeepArchitect: Automatically Designing and Training Deep Architectures

1 code implementation ICLR 2018 Renato Negrinho, Geoff Gordon

In addition, these experiments show that our framework can be used effectively for model discovery, as it is possible to describe expressive search spaces and discover competitive models without much effort from the human expert.

Hyperparameter Optimization Model Discovery

Linear Time Computation of Moments in Sum-Product Networks

no code implementations NeurIPS 2017 Han Zhao, Geoff Gordon

We propose a dynamic programming method to further reduce the computation of the moments of all the edges in the graph from quadratic to linear.

Efficient Multitask Feature and Relationship Learning

no code implementations14 Feb 2017 Han Zhao, Otilia Stretcu, Alex Smola, Geoff Gordon

In this paper, we consider a formulation of multitask learning that learns the relationships both between tasks and between features, represented through a task covariance and a feature covariance matrix, respectively.

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