This measure can be derived from three types of information contained in any two-dimensional “team member (dimension Y with members from 1 to j)–function (dimension X with functions from 1 to i)” frequency table: (i) the proportional
distribution of the number of team members over the functional categories summarized by the marginal entropy measure Hx (i.e., the standard Shannon-Wiener measure); (ii) the proportional distribution of the number of functions over the team members summarized by the marginal entropy measure Hy; and (iii) the total entropy of the frequency table indicated as Hxy:
请问其中Pij是怎么计算的，Pij=Pi*Pj吗？