Computational Tradeoffs of Optimization-Based Bound Tightening in ReLU Networks

Fuente: arXiv
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Autori principali: Badilla, Fabian, Goycoolea, Marcos, Muñoz, Gonzalo, Serra, Thiago
Natura: Preprint
Pubblicazione: 2023
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author Badilla, Fabian
Goycoolea, Marcos
Muñoz, Gonzalo
Serra, Thiago
author_facet Badilla, Fabian
Goycoolea, Marcos
Muñoz, Gonzalo
Serra, Thiago
contents The use of Mixed-Integer Linear Programming (MILP) models to represent neural networks with Rectified Linear Unit (ReLU) activations has become increasingly widespread in the last decade. This has enabled the use of MILP technology to test-or stress-their behavior, to adversarially improve their training, and to embed them in optimization models leveraging their predictive power. Many of these MILP models rely on activation bounds. That is, bounds on the input values of each neuron. In this work, we explore the tradeoff between the tightness of these bounds and the computational effort of solving the resulting MILP models. We provide guidelines for implementing these models based on the impact of network structure, regularization, and rounding.
format Preprint
id arxiv_https___arxiv_org_abs_2312_16699
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Computational Tradeoffs of Optimization-Based Bound Tightening in ReLU Networks
Badilla, Fabian
Goycoolea, Marcos
Muñoz, Gonzalo
Serra, Thiago
Optimization and Control
Machine Learning
The use of Mixed-Integer Linear Programming (MILP) models to represent neural networks with Rectified Linear Unit (ReLU) activations has become increasingly widespread in the last decade. This has enabled the use of MILP technology to test-or stress-their behavior, to adversarially improve their training, and to embed them in optimization models leveraging their predictive power. Many of these MILP models rely on activation bounds. That is, bounds on the input values of each neuron. In this work, we explore the tradeoff between the tightness of these bounds and the computational effort of solving the resulting MILP models. We provide guidelines for implementing these models based on the impact of network structure, regularization, and rounding.
title Computational Tradeoffs of Optimization-Based Bound Tightening in ReLU Networks
topic Optimization and Control
Machine Learning
url https://arxiv.org/abs/2312.16699