iVA-File: Efficiently Indexing Sparse Wide Tables in Community Systems.

Boduo Li Mei Hui Jianzhong Li Hong Gao iVA-File: Efficiently Indexing Sparse Wide Tables in Community Systems. 210-221 2009 ICDE http://dx.doi.org/10.1109/ICDE.2009.99 conf/icde/2009 db/conf/icde/icde2009.html#LiHLG09