학술논문

Optimizing Bayesian acquisition functions in Gaussian Processes
Document Type
Working Paper
Source
Subject
Computer Science - Machine Learning
Statistics - Machine Learning
Language
Abstract
Bayesian Optimization is an effective method for searching the global maxima of an objective function especially if the function is unknown. The process comprises of using a surrogate function and choosing an acquisition function followed by optimizing the acquisition function to find the next sampling point. This paper analyzes different acquistion functions like Maximum Probability of Improvement and Expected Improvement and various optimizers like L-BFGS and TNC to optimize the acquisitions functions for finding the next sampling point. Along with the analysis of time taken, the paper also shows the importance of position of initial samples chosen.
Comment: 9 Pages, 12 Figures, 1 Table, 10 Equations