# GraphIPS: Calibration-Free and Map-Free Indoor Positioning Using Smartphone Crowdsourced Data

> Research article (IEEE Internet of Things Journal, 2020) · cited 37× · AI/ML

**Wikidata**: [openalex:W3037308238](https://www.wikidata.org/wiki/openalex:W3037308238)  
**Source**: https://4ort.xyz/entity/graphips-calibration-free-and-map-free-indoor-positioning-using-smartphone-crowdsourced-data