# Determine the number of unknown targets in the open world from the perspective of bidirectional analysis using Gap statistic and Isolation forest

> Research article (Information Sciences, 2022) · cited 22× · AI/ML

**Wikidata**: [openalex:W4312058312](https://www.wikidata.org/wiki/openalex:W4312058312)  
**Source**: https://4ort.xyz/entity/determine-the-number-of-unknown-targets-in-the-open-world-from-the-perspective-of-bidirectional-analysis-using-gap-stati