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: "A Rule-Based Morphosemantic Analyzer for French for a Fine-Grained Semantic Annotation of Texts"
  Abstract: We describe DeriF, a rule-based morphosemantic analyzer developed for French. Unlike existing word segmentation tools, DeriF provides derived and compound words with various sorts of semantic information: (1) a definition, computed from both the base meaning and the specificities of the morphological rule; (2) lexical-semantic features, inferred from general linguistic properties of derivation rules; (3) lexical relations (synonymy, (co-)hyponymy) with other, morphologically unrelated, words belonging to the same analyzed corpus.

Connected through hyperedge HE-1 (induced by source paper "The Lefff, a freely available and large-coverage morphological and syntactic lexicon for French"):
  with members:
    - "A morphological lexicon for the Persian language"

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