Application of rank aggregation to campus network search engine
Yue Li · Dalian Ligong Daxue xuebao · 2005
Relevance ranking is one of the key technologies for web pages search engine.Campus network search engine(CNSE) focuses on web information within a certain campus network,which has its own characteristics compared with Internet and Intranets.The influence of heuristic evidence in web page ranking and the performance of rank aggregation to CNSE were analyzed.The impact of each heuristic evidence differs in different data sets,and the recall of each combination of subsets of heuristics varies from 2% to 48%.The combination whose recall is over 35% includes at least four heuristics,that is,a few heuristics should be considered according to dataset in ranking system.The experimental results show that rank aggregation technology is necessary for producing robust results in CNSE.The rank aggregation algorithm has been deployed in Tsinghua University campus network search engine.