Pn=⎩⎨⎧P(n−1)×min(∑ΔK,c) if ∑ΔK≥1P(n−1)×max(∑ΔK,p⊖) if ∑ΔK<1
Where:
Pn is the Prestige of a community in the given period.
P(n−1) is the Prestige of a community in the previous period.
c: constraint factor, just like in the PS framework, c controls the slope in P’s rate of change. It’s initially fixed at to 1.4 (40% growth), later customizable by the Hub itself.
p⊖ is the penalty factor for Hubs inactive in a specific period. Same as in Participation Score.
∑ΔK is the sum of the rates of change of each individual parameter, between the current and the previous intervals.