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. 2010 Jan 6;5(1):e8125. doi: 10.1371/journal.pone.0008125

Figure 2. Cumulative distribution function (CDF) plots of reaction valence for all six models.

Figure 2

To compute the CDF we first computed the PDF of reaction valence, weighting each reaction valence by the reaction's average propensity over a pre-computed sample trajectory. We then computed the CDF from the PDF to increase visual salience of the sparsely distributed weights. A steep climb near a particular valence means a significant probability of a randomly chosen reaction having that approximate valence. This, in turn, often indicates the presence of a super-species that is involved in many reactions and benefits greatly from factoring.