# Implementing action mask in proximal policy optimization (PPO) algorithm

> Research article (ICT Express, 2020) · cited 57× · AI/ML

**Wikidata**: [openalex:W3027341120](https://www.wikidata.org/wiki/openalex:W3027341120)  
**Source**: https://4ort.xyz/entity/implementing-action-mask-in-proximal-policy-optimization-ppo-algorithm