Group1[http://gitlab.icenter.tsinghua.edu.cn/xavieryao/bitmap-db|Group1]
Group3[http://gitlab.icenter.tsinghua.edu.cn/3rd_group/bitmap_indexing|Group3]
Group4[http://gitlab.icenter.tsinghua.edu.cn/taanng/Bitmap|Group4]
Group5[http://gitlab.icenter.tsinghua.edu.cn/ddeerreekk/Experiment_1_Bitmap_Index|Group5]
Group6[http://gitlab.icenter.tsinghua.edu.cn/group6/project1|Group6]
Group8[http://gitlab.icenter.tsinghua.edu.cn/FQX/bitmap|Group8]
==项目2描述==