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: "An Array Data Flow Analysis Based Communication Optimizer"
  Abstract: We present an efficient array data flow analysis based global communication optimizer which manages the analysis cost by partitioning the data flow problems into subproblems and solving the subproblems one at a time in a demand driven manner. In comparison to traditional array data flow based techniques, our scheme greatly reduces the memory requirement and manages the analysis time more effectively. The optimizer performs message vectorization, global redundant communication elimination and global communication scheduling. Our experience with the optimizer suggests that array data flow analysis for communication optimization is efficient and effective.

Connected through hyperedge HE-1 (induced by source paper "Demand-Driven Data Flow Analysis for Communication Optimization"):
  with members:
    (none)

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