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: "Lifting metamodels to ontologies: a step to the semantic integration of modeling languages"
  Abstract: The use of different modeling languages in software development makes their integration a must. Most existing integration approaches are metamodel-based with these metamodels representing both an abstract syntax of the corresponding modeling language and also a data structure for storing models. This implementation specific focus, however, does not make explicit certain language concepts, which can complicate integration tasks. Hence, we propose a process which semi-automatically lifts metamodels into ontologies by making implicit concepts in the metamodel explicit in the ontology. Thus, a shift of focus from the implementation of a certain modeling language towards the explicit reification of the concepts covered by this language is made. This allows matching on a solely conceptual level, which helps to achieve better results in terms of mappings that can in turn be a basis for deriving implementation specific transformation code.

Connected through hyperedge HE-1 (induced by source paper "Detection of Semantically Equivalent Fragments for Business Process Model Change Management"):
  with members:
    - "A comparative survey of business process similarity measures"

Connected through hyperedge HE-2 (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"
    - "The Role of Ontologies in Disaster Recovery Planning"
    - "Integration of Facebook Online Social Network User Profiles into a Knowledgebase"

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