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: "HANS: A Service-Oriented Framework for Chinese Language Processing"
  Abstract: A service-oriented architecture called as HANS is proposed to facilitate Chinese natural language processing. This unified framework seamlessly integrates fundamental NLP tasks including word segmentation, part-of-speech tagging, named entity recognition, chunking, paring, and semantic role labeling to enhance Chinese language processing functionality. A basic Chinese word segmentation task is used to illustrate the function of the proposed architecture. to demonstrate the effects. Evaluated benchmarks are taken from the SIGHAN 2005 bakeoff and the NLPCC 2016 shared task. We implement publicly released toolkits including Stanford CoreNLP, FudanNLP and CKIP as services in our HANS framework for performance comparison. Experimental results confirm the feasibility of the proposed architecture. Findings are also discussed to point to potential future developments.

Connected through hyperedge HE-1 (induced by source paper "The Stanford CoreNLP Natural Language Processing Toolkit"):
  with members:
    - "Information extraction from multi-institutional radiology reports"
    - "Recursive Deep Models for Semantic Compositionality Over a Sentiment Treebank"
    - "Aligning Textual and Graphical Descriptions of Processes Through ILP Techniques"
    - "The price of debiasing automatic metrics in natural language evalaution."

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