Linked Open Schema is an effort to build web-scale schemata from popular sites, which include existing categories with hierarchies and tag clouds. This project is maintained by Knowledge Science and Engineering Lab, Southeast University, China.
If using this dataset, please cite the following papers:
 Tianxing Wu, Haofen Wang, Guilin Qi, Jiangang Zhu, Tong Ruan: On building and publishing Linked Open Schema from social Web sites. Journal of Web Semantics. 51: 39-50 (2018)
 Haofen Wang, Tianxing Wu, Guilin Qi, Tong Ruan: On Publishing Chinese Linked Open Schema. ISWC (1) 2014: 293-308