Book Industry Study Group (BISG) - an American, not-for-profit membership organization that supports the book publishing industry through the development of standards, best practices, research, and events. BookNet Canada performs a similar role in that country. BISG and BookNet Canada also administer Metadata Certification programs. These programs evaluate the quality of a publisher's or vendor's metadata files based on structure, content, and adherence to best practices. Compliance to industry standards is evaluated and ranked by expert advisers and results in the awarding of levels of certification that may be shared with trading partners to indicate proficiency in metadata creation and adherence to standards.