sample rate of MS Call Graphs information

根据文中的说法
` MS_CallGraph_Table: MS Call Graphs information. Due to the large-scale data size, we sample the call graph based on the rate of 0.5%. It contains about more than twenty million call graphs among 20000+ MSs with in more than ten clusters.`
是否代表MS_CallGraph_Table表格中的数据只有整体call graph data的0.5%？

Start with the quoted MS_CallGraph_Table description in the issue and verify what the stated 0.5% sampling rate refers to. Clarify whether it describes the table's data relative to the complete call-graph dataset, and document the confirmed interpretation for the dataset users.

Written by the indexing model from the issue text.