Figure 8From: Discrete derivative: a data slicing algorithm for exploration of sharing biological networks between rheumatoid arthritis and coronary heart disease Graphics of the first discrete derivative based on frequency with nodes in parenthesis. These networks are constructed with data set downloaded from PubMed on May 9, 2010. They are built under the conditions that for a network on frequency i (i = 1, 2, 3,,···, 29) which are in Fig. 8. We calculate the discrete derivative with i ≤ 28.Back to article page