This work was supported by the National Natural Science Foundation of China (Grant Nos. 61572135 and 61170085), 973 project (2010CB328106), Program for New Century Excellent Talents in China (NCET-10-0388).
The key issue in top-k retrieval, finding a set of k documents (from a large document collection) that can best answer a user's query, is to strike the optimal balance between relevance and diversity. In this paper...
the National Major Projects on Science and Technology(No.2010ZX01042-002-003-004);the National Basic Research Program (973) of China(No.2010CB328106);the National Natural Science Foundation of China(No. 61170085);the Program for New Century Excellent Talents in China(No.NCET-10-0388);the Shanghai Leading Academic Discipline Project(No.B412)
Most efficient indeces and query techniques over XML (extensible markup language) data are based on a certain labeling scheme, which can quickly determine ancestor-descendant and parent-child relationship between tw...