www-ai.cs.tu-dortmund.de/de/LEHRE/PG/PG445/literatur/georges_milley_2000a.pdf
Microsoft Word - KDD99rptfinal.doc
> 10.23 > 2/15/96 > 0.144 < 20.50 < 3 < 127291
35% 3.0% [7.56, 10.23) < 0.245 < 127828
33% 1.7% > 10.23 < 10/16/95 < 20.50 < 3 > 127291
28% 7.4% [7.56, 10.23) < 12/16/96
27% 0.7% > 10.23 > 2/15/96 < 0 [...] are put on the parameters: 0 << pi ≤ 1, σ2
i << ∞, (donors have positive probability of making a gift and their gift amounts have finite variance) and either σ2
i = 0 and pi << 1 (donors who give the same [...] of the distribution of Xi
, the random variable ΣXi has expected value Σpiµi and variance Σ pi(σ
2 i + µi
2(1 - pi)).
As expected, variance associated with the sum increases with the number of terms in the …
