Search Results for author: Robert M. Lee

Found 6 papers, 6 papers with code

Random Pareto front surfaces

1 code implementation2 May 2024 Ben Tu, Nikolas Kantas, Robert M. Lee, Behrang Shafei

As a motivating example, we investigate how these statistics can be used within a design of experiments setting, where the goal is to both infer and use the Pareto front surface distribution in order to make effective decisions.

Multi-objective optimisation via the R2 utilities

1 code implementation19 May 2023 Ben Tu, Nikolas Kantas, Robert M. Lee, Behrang Shafei

As part of our work, we show that these utilities are monotone and submodular set functions which can be optimised effectively using greedy optimisation algorithms.

Tree ensemble kernels for Bayesian optimization with known constraints over mixed-feature spaces

1 code implementation2 Jul 2022 Alexander Thebelt, Calvin Tsay, Robert M. Lee, Nathan Sudermann-Merx, David Walz, Behrang Shafei, Ruth Misener

Tree ensembles can be well-suited for black-box optimization tasks such as algorithm tuning and neural architecture search, as they achieve good predictive performance with little or no manual tuning, naturally handle discrete feature spaces, and are relatively insensitive to outliers in the training data.

Bayesian Optimization Neural Architecture Search

Multi-Objective Constrained Optimization for Energy Applications via Tree Ensembles

1 code implementation4 Nov 2021 Alexander Thebelt, Calvin Tsay, Robert M. Lee, Nathan Sudermann-Merx, David Walz, Tom Tranter, Ruth Misener

Energy systems optimization problems are complex due to strongly non-linear system behavior and multiple competing objectives, e. g. economic gain vs. environmental impact.

ENTMOOT: A Framework for Optimization over Ensemble Tree Models

1 code implementation10 Mar 2020 Alexander Thebelt, Jan Kronqvist, Miten Mistry, Robert M. Lee, Nathan Sudermann-Merx, Ruth Misener

Gradient boosted trees and other regression tree models perform well in a wide range of real-world, industrial applications.

Decision Making

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