Search Results for author: Alexander Ihler

Found 15 papers, 2 papers with code

Boosting AND/OR-Based Computational Protein Design: Dynamic Heuristics and Generalizable UFO

no code implementations31 Aug 2023 Bobak Pezeshki, Radu Marinescu, Alexander Ihler, Rina Dechter

Scientific computing has experienced a surge empowered by advancements in technologies such as neural networks.

Protein Design

Design Amortization for Bayesian Optimal Experimental Design

no code implementations7 Oct 2022 Noble Kennamer, Steven Walton, Alexander Ihler

Bayesian optimal experimental design is a sub-field of statistics focused on developing methods to make efficient use of experimental resources.

Computational Efficiency Experimental Design

Reducing Variance in Temporal-Difference Value Estimation via Ensemble of Deep Networks

1 code implementation16 Sep 2022 Litian Liang, Yaosheng Xu, Stephen Mcaleer, Dailin Hu, Alexander Ihler, Pieter Abbeel, Roy Fox

On a set of 26 benchmark Atari environments, MeanQ outperforms all tested baselines, including the best available baseline, SUNRISE, at 100K interaction steps in 16/26 environments, and by 68% on average.

NeuroBE: NN Approximations to Bucket Elimination

no code implementations AAAI Workshop CLeaR 2022 Sakshi Agarwal, Kalev Kask, Alexander Ihler, Rina Dechter

A major limiting factor in graphical model inference is the complexity of computing the partition function.

Temporal-Difference Value Estimation via Uncertainty-Guided Soft Updates

no code implementations28 Oct 2021 Litian Liang, Yaosheng Xu, Stephen Mcaleer, Dailin Hu, Alexander Ihler, Pieter Abbeel, Roy Fox

Under the belief that $\beta$ is closely related to the (state dependent) model uncertainty, Entropy Regularized Q-Learning (EQL) further introduces a principled scheduling of $\beta$ by maintaining a collection of the model parameters that characterizes model uncertainty.

Q-Learning Scheduling

Active learning with RESSPECT: Resource allocation for extragalactic astronomical transients

1 code implementation12 Oct 2020 Noble Kennamer, Emille E. O. Ishida, Santiago Gonzalez-Gaitan, Rafael S. de Souza, Alexander Ihler, Kara Ponder, Ricardo Vilalta, Anais Moller, David O. Jones, Mi Dai, Alberto Krone-Martins, Bruno Quint, Sreevarsha Sreejith, Alex I. Malz, Lluis Galbany

The Recommendation System for Spectroscopic follow-up (RESSPECT) project aims to enable the construction of optimized training samples for the Rubin Observatory Legacy Survey of Space and Time (LSST), taking into account a realistic description of the astronomical data environment.

Active Learning Astronomy +1

Accelerating Dynamic Programs via Nested Benders Decomposition with Application to Multi-Person Pose Estimation

no code implementations ECCV 2018 Shaofei Wang, Alexander Ihler, Konrad Kording, Julian Yarkony

We present a novel approach to solve dynamic programs (DP), which are frequent in computer vision, on tree-structured graphs with exponential node state space.

Multi-Person Pose Estimation

Learning Infinite RBMs with Frank-Wolfe

no code implementations NeurIPS 2016 Wei Ping, Qiang Liu, Alexander Ihler

In this work, we propose an infinite restricted Boltzmann machine~(RBM), whose maximum likelihood estimation~(MLE) corresponds to a constrained convex optimization.

Multi-Person Pose Estimation via Column Generation

no code implementations18 Sep 2017 Shaofei Wang, Chong Zhang, Miguel A. Gonzalez-Ballester, Alexander Ihler, Julian Yarkony

We give a novel integer program formulation of the multi-person pose estimation problem, in which variables correspond to assignments of parts in the image to poses in a two-tier, hierarchical way.

Multi-Person Pose Estimation

Belief Propagation in Conditional RBMs for Structured Prediction

no code implementations2 Mar 2017 Wei Ping, Alexander Ihler

We demonstrate that, in both maximum likelihood and max-margin learning, training conditional RBMs with BP as the inference routine can provide significantly better results than current state-of-the-art CD methods on structured prediction problems.

Structured Prediction

Decomposition Bounds for Marginal MAP

no code implementations NeurIPS 2015 Wei Ping, Qiang Liu, Alexander Ihler

Marginal MAP inference involves making MAP predictions in systems defined with latent variables or missing information.

Distributed Estimation, Information Loss and Exponential Families

no code implementations NeurIPS 2014 Qiang Liu, Alexander Ihler

Distributed learning of probabilistic models from multiple data repositories with minimum communication is increasingly important.

Marginal Structured SVM with Hidden Variables

no code implementations4 Sep 2014 Wei Ping, Qiang Liu, Alexander Ihler

In this work, we propose the marginal structured SVM (MSSVM) for structured prediction with hidden variables.

Structured Prediction

Variational Algorithms for Marginal MAP

no code implementations26 Feb 2013 Qiang Liu, Alexander Ihler

The marginal maximum a posteriori probability (MAP) estimation problem, which calculates the mode of the marginal posterior distribution of a subset of variables with the remaining variables marginalized, is an important inference problem in many models, such as those with hidden variables or uncertain parameters.

Cannot find the paper you are looking for? You can Submit a new open access paper.