# An on-line variable-fidelity surrogate-assisted harmony search algorithm with multi-level screening strategy for expensive engineering design optimization

> Research article (Knowledge-Based Systems, 2019) · cited 49× · AI/ML

**Wikidata**: [openalex:W2909147580](https://www.wikidata.org/wiki/openalex:W2909147580)  
**Source**: https://4ort.xyz/entity/an-on-line-variable-fidelity-surrogate-assisted-harmony-search-algorithm-with-multi-level-screening-strategy-for-expensi