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: "Efficient query processing in geographic web search engines"
  Abstract: Geographic web search engines allow users to constrain and order search results in an intuitive manner by focusing a query on a particular geographic region. Geographic search technology, also called  local search , has recently received significant interest from major search engine companies. Academic research in this area has focused primarily on techniques for extracting geographic knowledge from the web. In this paper, we study the problem of efficient query processing in scalable geographic search engines. Query processing is a major bottleneck in standard web search engines, and the main reason for the thousands of machines used by the major engines. Geographic search engine query processing is different in that it requires a combination of text and spatial data processing techniques. We propose several algorithms for efficient query processing in geographic search engines, integrate them into an existing web search query processor, and evaluate them on large sets of real data and query traces.

Connected through hyperedge HE-1 (induced by source paper "Toward the semantic geospatial web"):
  with members:
    - "Spatial SQL: a query and presentation language"

Connected through hyperedge HE-2 (induced by source paper "Exploration on Similar Spatial Textual Objects Retrieval"):
  with members:
    (none)

Connected through hyperedge HE-3 (induced by source paper "RASIM: a rank-aware separate index method for answering top-k spatial keyword queries"):
  with members:
    - "Efficient moving k nearest neighbor queries over line segment objects"

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