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: "Evolutionary Generation of Whole Test Suites"
  Abstract: Recent advances in software testing allow automatic derivation of tests that reach almost any desired point in the source code. There is, however, a fundamental problem with the general idea of targeting one distinct test coverage goal at a time: Coverage goals are neither independent of each other, nor is test generation for any particular coverage goal guaranteed to succeed. We present EvoSuite, a search-based approach that optimizes whole test suites towards satisfying a coverage criterion, rather than generating distinct test cases directed towards distinct coverage goals. Evaluated on five open source libraries and an industrial case study, we show that EvoSuite achieves up to 18 times the coverage of a traditional approach targeting single branches, with up to 44% smaller test suites.

Connected through hyperedge HE-1 (induced by source paper "CUTE: a concolic unit testing engine for C"):
  with members:
    - "HAMPI: a solver for string constraints"
    - "Check 'n' crash: combining static checking and testing"
    - "Pex: white box test generation for .NET"
    - "Unleashing Mayhem on Binary Code"
    - "Efficient symbolic execution of value-based data structures for critical systems"
    - "Concolic Execution and Test Case Generation in Prolog"

Connected through hyperedge HE-2 (induced by source paper "Pex: white box test generation for .NET"):
  with members:
    - "CUTE: a concolic unit testing engine for C"
    - "Efficient symbolic execution of value-based data structures for critical systems"
    - "Search-Based Test Input Generation for String Data Types Using the Results of Web Queries"
    - "Symbolic Execution Debugger (SED)"

Connected through hyperedge HE-3 (induced by source paper "On parameter tuning in search based software engineering"):
  with members:
    - "Improved heuristics for solving OCL constraints using search algorithms"

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