Search Results for author: Alexander Thebelt

Found 6 papers, 5 papers with code

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

OMLT: Optimization & Machine Learning Toolkit

1 code implementation4 Feb 2022 Francesco Ceccon, Jordan Jalving, Joshua Haddad, Alexander Thebelt, Calvin Tsay, Carl D. Laird, Ruth Misener

The optimization and machine learning toolkit (OMLT) is an open-source software package incorporating neural network and gradient-boosted tree surrogate models, which have been trained using machine learning, into larger optimization problems.

Bayesian Optimisation BIG-bench Machine Learning +1

Maximizing information from chemical engineering data sets: Applications to machine learning

no code implementations25 Jan 2022 Alexander Thebelt, Johannes Wiebe, Jan Kronqvist, Calvin Tsay, Ruth Misener

For each of these four data characteristics, we discuss applications where these data characteristics arise and show how current chemical engineering research is extending the fields of data science and machine learning to incorporate these challenges.

BIG-bench Machine Learning

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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