human: Given a node-centered hypergraph: <hypergraph>, where nodes represent authors and hyperedges represent groups of authors who co-authored the same paper.

Details of the hypergraph:
Center node: "Integration of Facebook Online Social Network User Profiles into a Knowledgebase"
  Abstract: The article describes attempts made to integrate variety of user’s data available on Facebook online social network. The source of the data are user profiles, publicly available for other Facebook users, which contain data such as visited places, favorite sport teams, TV programs, watched movies, read books and other likes. The destination of integrated data is FOAF ontology adopted for integration purposes. The work presents the required FOAF ontology extensions and an approach to Facebook data extraction as a contribution. Also the query and reasoning examples on the created knowledgebase are presented.

Connected through hyperedge HE-1 (induced by source paper "Semantic integration: a survey of ontology-based approaches"):
  with members:
    - "PrDLs: a new kind of probabilistic description logics about belief"
    - "Ontology versioning on the semantic web"
    - "Generating SPARQL executable mappings to integrate ontologies"
    - "Lifting metamodels to ontologies: a step to the semantic integration of modeling languages"
    - "The Role of Ontologies in Disaster Recovery Planning"

Question: Please tell me which research area the center author belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science