ConceptExpected Improvement / EI
Expected Improvement
A classic acquisition function in Bayesian optimization. It computes the expected improvement a candidate point could achieve relative to the current best value after sampling, naturally balancing exploration and exploitation, and usually has a closed-form expression.
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Oct 14
Standard Bayesian optimization acquisition functions (such as GP-UCB, EI, Thompson sampling) are almost all designed to minimize cumulative regret, and therefore naturally favor exploitation over exploration.
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