METAmorphoses is a system for flexible and easy-to-use generation of RDF metadata directly from a relational database. Metadata are genereated according to a mapping from an existing database schema to a particular ontology.

RDFa版本的FriendTracker,使用了RDF转换工具，SPARQL短点，xOperator.-ontology application

rdf三元组抽取,多头实体关系联合抽取模型,基于pytorch,tensorflow两种框架实现(multihead_joint_entity_relation_extraction pytorch torflow)