Search Results for author: Victor M. Zavala

Found 23 papers, 10 papers with code

BOIS: Bayesian Optimization of Interconnected Systems

no code implementations19 Nov 2023 Leonardo D. González, Victor M. Zavala

We show that this simple approach (which we call BOIS) enables the exploitation of structural knowledge, such as that arising in interconnected systems as well as systems that embed multiple GP models and combinations of physics and GP models.

Bayesian Optimization Chemical Process +1

Quantifying Space-Time Load Shifting Flexibility in Electricity Markets

1 code implementation17 Mar 2023 Weiqi Zhang, Victor M. Zavala

The power grid is undergoing significant restructuring driven by the adoption of wind/solar power and the incorporation of new flexible technologies that can shift load in space and time (e. g., data centers, battery storage, and modular manufacturing).

A Graph-Based Modeling Framework for Tracing Hydrological Pollutant Transport in Surface Waters

1 code implementation10 Feb 2023 David L. Cole, Gerardo J. Ruiz-Mercado, Victor M. Zavala

We demonstrate the capabilities of our framework by using case studies in the State of Wisconsin; here, we aim to identify upstream nutrient pollutant sources that arise from agricultural practices and trace downstream impacts to waterbodies, rivers, and streams.

Decision Making

Scalable Primal Decomposition Schemes for Large-Scale Infrastructure Networks

no code implementations22 Dec 2022 Alexander Engelmann, Sungho Shin, François Pacaud, Victor M. Zavala

The real-time operation of large-scale infrastructure networks requires scalable optimization capabilities.

New Paradigms for Exploiting Parallel Experiments in Bayesian Optimization

1 code implementation3 Oct 2022 Leonardo D. González, Victor M. Zavala

However, a key limitation of BO is that it is an inherently sequential algorithm (one experiment is proposed per round) and thus cannot directly exploit high-throughput (parallel) experiments.

Bayesian Optimization Experimental Design

Pricing and Remunerating Electricity Storage Flexibility Using Virtual Links

1 code implementation15 Apr 2022 Weiqi Zhang, Philip A. Tominac, Victor M. Zavala

Ambitious renewable portfolio standards motivate the incorporation of energy storage resources (ESR) as sources of flexibility.

Exploring the Impacts of Power Grid Signals on Data Center Operations using a Receding-Horizon Scheduling Model

no code implementations13 Apr 2022 Weiqi Zhang, Line A. Roald, Victor M. Zavala

An obstacle that arises here is the lack of computationally-tractable DC operation models that can capture objectives, constraints, and information flows that arise at the interface of DCs and the power grid.

Management Scheduling

Remunerating Space-Time, Load-Shifting Flexibility from Data Centers in Electricity Markets

no code implementations24 May 2021 Weiqi Zhang, Victor M. Zavala

Central to our study is the concept of virtual links, which provide non-physical pathways that can be used by DaCes to shift power loads (by shifting computing loads) across space and time.

Convolutional Neural Nets in Chemical Engineering: Foundations, Computations, and Applications

1 code implementation13 Jan 2021 Shengli Jiang, Victor M. Zavala

CNNs highlight features from the grid data by performing convolution operations with different types of operators.

Exponential Decay of Sensitivity in Graph-Structured Nonlinear Programs

no code implementations8 Jan 2021 Sungho Shin, Mihai Anitescu, Victor M. Zavala

We study solution sensitivity for nonlinear programs (NLPs) whose structures are induced by graphs.

Stochastic Optimization Optimization and Control

A Dynamic Penalty Function Approach for Constraints-Handling in Reinforcement Learning

no code implementations22 Dec 2020 Haeun Yoo, Victor M. Zavala, Jay H. Lee

We first examine the ability of a neural network to represent a value function when uniform, linear, or DP functions are added to prevent constraint violation.

reinforcement-learning Reinforcement Learning (RL)

Mitigating Investment Risk Using Modular Technologies

no code implementations11 Dec 2020 Yue Shao, Yicheng Hu, Victor M. Zavala

We study logistical investment flexibility provided by modular processing technologies for mitigating risk.

Optimization and Control

SBML2Julia: interfacing SBML with efficient nonlinear Julia modelling and solution tools for parameter optimization

1 code implementation5 Nov 2020 Paul F. Lang, Sungho Shin, Victor M. Zavala

Motivation: Estimating model parameters from experimental observations is one of the key challenges in systems biology and can be computationally very expensive.

MPC Controller Tuning using Bayesian Optimization Techniques

no code implementations29 Sep 2020 Qiugang Lu, Ranjeet Kumar, Victor M. Zavala

The approach is motivated by the observation that evaluating the closed-loop performance of MPC by trial-and-error is time-consuming (e. g., every closed-loop simulation can involve solving thousands of optimization problems).

Bayesian Optimization

Image-Based Model Predictive Control via Dynamic Mode Decomposition

no code implementations11 Jun 2020 Qiugang Lu, Victor M. Zavala

We show that the dynamics of this high-dimensional space can be accurately predicted by using a 40-dimensional DMD model and we show that the field can be manipulated satisfactorily by using an MPC controller that embeds the low-dimensional DMD model.

Model Predictive Control

A Graph-Based Modeling Abstraction for Optimization: Concepts and Implementation in Plasmo.jl

2 code implementations9 Jun 2020 Jordan Jalving, Sungho Shin, Victor M. Zavala

We present a general graph-based modeling abstraction for optimization that we call an OptiGraph.

Optimization and Control

On the Convergence of Overlapping Schwarz Decomposition for Nonlinear Optimal Control

no code implementations14 May 2020 Sen Na, Sungho Shin, Mihai Anitescu, Victor M. Zavala

We study the convergence properties of an overlapping Schwarz decomposition algorithm for solving nonlinear optimal control problems (OCPs).

Motion Planning

Unifying Theorems for Subspace Identification and Dynamic Mode Decomposition

1 code implementation16 Mar 2020 Sungho Shin, Qiugang Lu, Victor M. Zavala

This paper presents unifying results for subspace identification (SID) and dynamic mode decomposition (DMD) for autonomous dynamical systems.

On the Convergence of the Dynamic Inner PCA Algorithm

no code implementations12 Mar 2020 Sungho Shin, Alex D. Smith, S. Joe Qin, Victor M. Zavala

In this work, we show that this algorithm is a specialized variant of a coordinate maximization algorithm.

Graph-Based Modeling and Simulation of Complex Systems

4 code implementations12 Dec 2018 Jordan Jalving, Yankai Cao, Victor M. Zavala

We present graph-based modeling abstractions to represent cyber-physical dependencies arising in complex systems.

Optimization and Control

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