Fig. 1
From: Indirect association and ranking hypotheses for literature based discovery
Process overview. An overview of how association measures are calculated. The equation shown is Pearson’s Chi Squared, where mij values are: \(m_{11} = \frac {n_{1p} * n_{p1}}{n_{pp}}\), \(m_{12} = \frac {n_{1p} * n_{p2}}{n_{pp}}\), \(m_{21} = \frac {n_{p1} * n_{2p}}{n_{pp}}\), \(m_{22} = \frac {n_{p2} * n_{2p}}{n_{pp}}\) and n2p=npp−n1p, np2=npp−np1