Search Results for author: Shiau Hong Lim

Found 10 papers, 1 papers with code

Q2R: A Query-to-Resolution System for Natural-Language Queries

no code implementations NAACL (ACL) 2022 Shiau Hong Lim, Laura Wynter

We present a system for document retrieval that combines direct classification with standard content-based retrieval approaches to significantly improve the relevance of the retrieved documents.

Natural Language Queries Retrieval

Neural-Progressive Hedging: Enforcing Constraints in Reinforcement Learning with Stochastic Programming

no code implementations27 Feb 2022 Supriyo Ghosh, Laura Wynter, Shiau Hong Lim, Duc Thien Nguyen

We propose a framework, called neural-progressive hedging (NP), that leverages stochastic programming during the online phase of executing a reinforcement learning (RL) policy.

Portfolio Optimization reinforcement-learning +1

Order Constraints in Optimal Transport

1 code implementation14 Oct 2021 Fabian Lim, Laura Wynter, Shiau Hong Lim

Optimal transport is a framework for comparing measures whereby a cost is incurred for transporting one measure to another.

Natural Language Inference

Distributional Reinforcement Learning for Risk-Sensitive Policies

no code implementations1 Jan 2021 Shiau Hong Lim, Ilyas Malik

We address the problem of learning a risk-sensitive policy based on the CVaR risk measure using distributional reinforcement learning.

Distributional Reinforcement Learning reinforcement-learning +1

Robustness and Personalization in Federated Learning: A Unified Approach via Regularization

no code implementations14 Sep 2020 Achintya Kundu, Pengqian Yu, Laura Wynter, Shiau Hong Lim

We present a class of methods for robust, personalized federated learning, called Fed+, that unifies many federated learning algorithms.

Personalized Federated Learning

Variational Bayesian Inference for Crowdsourcing Predictions

no code implementations1 Jun 2020 Desmond Cai, Duc Thien Nguyen, Shiau Hong Lim, Laura Wynter

Crowdsourcing has emerged as an effective means for performing a number of machine learning tasks such as annotation and labelling of images and other data sets.

Bayesian Inference

A Deep Ensemble Multi-Agent Reinforcement Learning Approach for Air Traffic Control

no code implementations3 Apr 2020 Supriyo Ghosh, Sean Laguna, Shiau Hong Lim, Laura Wynter, Hasan Poonawala

Air traffic control is an example of a highly challenging operational problem that is readily amenable to human expertise augmentation via decision support technologies.

Decision Making Management +3

Clustering from Labels and Time-Varying Graphs

no code implementations NeurIPS 2014 Shiau Hong Lim, Yudong Chen, Huan Xu

Our theoretical results cover and subsume a wide range of existing graph clustering results including planted partition, weighted clustering and partially observed graphs.

Clustering Graph Clustering

Reinforcement Learning in Robust Markov Decision Processes

no code implementations NeurIPS 2013 Shiau Hong Lim, Huan Xu, Shie Mannor

An important challenge in Markov decision processes is to ensure robustness with respect to unexpected or adversarial system behavior while taking advantage of well-behaving parts of the system.

reinforcement-learning Reinforcement Learning (RL)

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