# Document Spanners for Extracting Incomplete Information

> Research article (Proceedings of the 37th ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database Systems, 2018) · cited 32× · AI/ML

**Wikidata**: [openalex:W2963265283](https://www.wikidata.org/wiki/openalex:W2963265283)  
**Source**: https://4ort.xyz/entity/document-spanners-for-extracting-incomplete-information