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: "Vejovis: suggesting fixes for JavaScript faults"
  Abstract: JavaScript is used in web applications for achieving rich user interfaces and implementing core functionality. Unfortunately, JavaScript code is known to be prone to faults. In an earlier study, we found that over 65% of such faults are caused by the interaction of JavaScript code with the DOM at runtime (DOM-related faults). In this paper, we first perform an analysis of 190 bug reports to understand fixes commonly applied by programmers to these DOM-related faults; we observe that parameter replacements and DOM element validations are common fix categories. Based on these findings, we propose an automated technique and tool, called Vejovis, for suggesting repairs for DOM-based JavaScript faults. To evaluate Vejovis, we conduct a case study in which we subject Vejovis to 22 real-world bugs across 11 applications. We find that Vejovis accurately suggests repairs for 20 out of the 22 bugs, and in 13 of the 20 cases, the correct fix was the top ranked one.

Connected through hyperedge HE-1 (induced by source paper "RETRACTED ARTICLE: Facilitating debugging of web applications through recording reduction: A family of empirical studies"):
  with members:
    (none)

Connected through hyperedge HE-2 (induced by source paper "HAMPI: a solver for string constraints"):
  with members:
    - "Sound and precise analysis of web applications for injection vulnerabilities"
    - "CUTE: a concolic unit testing engine for C"
    - "Effective Search-Space Pruning for Solvers of String Equations, Regular Expressions and Length Constraints"

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