# An improved matrix factorization with local differential privacy based on piecewise mechanism for recommendation systems

> Research article (Expert Systems with Applications, 2022) · cited 39× · AI/ML

**Wikidata**: [openalex:W4312221817](https://www.wikidata.org/wiki/openalex:W4312221817)  
**Source**: https://4ort.xyz/entity/an-improved-matrix-factorization-with-local-differential-privacy-based-on-piecewise-mechanism-for-recommendation-systems