{"text_format":"1","workbook":"xlsx","n_sheets":2,"sheets":["Cognos_Office_Connection_Cache","投资组合模型"],"not_rendered":{"charts":1,"images":2,"macros":1,"external_links":0,"defined_names":2,"comments":0,"pivot_tables":0},"unopened":[],"bounds":{"document_bytes":16777216,"sheet_cells":100000,"rows_first":2000,"rows_last":500,"rows_between":2000,"halvings":0,"cell_chars":16384,"cell_head_chars":4096},"cells_cut":0,"cells_raw":0,"read":"whole","date_system":"1900"}

{"sheet":"Cognos_Office_Connection_Cache","index":0,"n_rows":0,"n_cols":0,"rows_kept":0,"cut":false,"hidden":true,"merged":[]}

{"sheet":"投资组合模型","index":1,"n_rows":16,"n_cols":7,"rows_kept":16,"cut":false,"hidden":false,"merged":[[15,2,15,3]]}
[]
[]
[]
[]
[]
[null,"证券",1,2,3,4,5]
[null,"期望报酬率",0.08,0.1,0.12,0.14000000000000001,0.16]
[null,"方差",0.2,0.24,0.28000000000000003,0.32,0.36]
[null,"相关系数",1,2,3,4,5]
[null,1,1,-0.2,-0.4,-0.6,-0.8]
[null,2,-0.2,1,-0.2,0,0.2]
[null,3,-0.4,-0.2,1,0.2,0.4]
[null,4,-0.6,0,0.2,1,0.6]
[null,5,-0.8,0.2,0.4,0.6,1]
[]
[null,"随机数",10000]