neg.exp: neg.exp
In kmcd39/divflow: What the Package Does (One Line, Title Case)

e^-distance.

1	neg.exp(d, ...)

d

distance

Used by Massey and Denton to define a distance decay function used for various of their possible indices for Clustering dimension of segregation. Notably they include tract where i==j and use an non-zero within-tract distance in this case. They estimate d_ii (average within tract distance for tract i) to be (.6a_i)^.5 "following White 1983." In contrast, this function here assumes no loops (i!=j), and does not apply a within-tract weight.

I think this is a good, straightforward way to include decayed distance without worrying about parameterizing.

kmcd39/divflow documentation built on Dec. 21, 2021, 7:38 a.m.