human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge groups authors who co-authored the same paper.

Details of the hypergraph:
Center hyperedge (induced by source paper "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.

Includes members:
  Member "Toward the semantic geospatial web":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "Spatial SQL: a query and presentation language")
  Member "RASIM: a rank-aware separate index method for answering top-k spatial keyword queries":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "Efficient moving k nearest neighbor queries over line segment objects")
  Member "Exploration on Similar Spatial Textual Objects Retrieval":
    also connected through other hyperedges:
      (none)

Question: Please tell me which research area the co-authored paper (i.e., the source paper of the center hyperedge) belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science