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: "Measuring user satisfaction with knowledge management systems: scale development, purification, and initial test"
  Abstract: The shift from a product-based to a knowledge-based economy has resulted in an increased demand for knowledge workers who are capable of higher-order thinking and reasoning to solve intricate problems in the workplace. This requires organizations to introduce knowledge management systems (KMS) for employees and has fueled predictions and speculations about what makes KMS effective. Unfortunately, there are very few empirical studies that examine this issue. Thus, this paper develops a validated instrument to measure user satisfaction as a surrogate measure of KMS effectiveness. Based on a survey of 147 respondents practicing mostly in four international semiconductor manufacturing companies in the Hsin-Chu Science-based Industrial Park in Taiwan suggests a 16-item instrument that measures four dimensions of user satisfaction with knowledge management systems (USKMS) is well-validated. The instrument and comprehensive model proposed in this paper would be valuable to researchers and practitioners interested in designing, implementing, and managing knowledge management systems.

Connected through hyperedge HE-1 (induced by source paper "From IT Satisfaction to Job Satisfaction: Understanding the Role of User-Technology Fit"):
  with members:
    (none)

Connected through hyperedge HE-2 (induced by source paper "Examining the dimensionality and measurement of user-perceived knowledge and information quality in the KMS context"):
  with members:
    - "Advertisement Placement in Online Knowledge: The Effect of Advertisement Placement on Perceived Information Quality and Reuse of Online Q&A Services."

Connected through hyperedge HE-3 (induced by source paper "The measurement of user satisfaction with question answering systems"):
  with members:
    - "Item's Characterization for Model's Development in Information Retrieval System Evaluation"

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: Economics