在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus4 K- V$ _: M+ s# P
ask turtles with [infected?]
5 Y( Z; \# b2 t4 b [ ask link-neighbors with [not resistant?]
* t! A% S/ t& @ [ if random-float 100 < virus-spread-chance
0 B( B- M! g {( ~8 I7 F5 A2 L [ become-infected ] ] ] J" G+ J( p! {
end
% ]7 p) ]$ D, c这里为什么virus-spread-chance大于random-float 100,就可以判断出become-infected呢？. A: }* G# z+ R+ F* B4 o4 W
to do-virus-checks
5 m1 v, T# e9 N2 @. @ ask turtles with [infected? and virus-check-timer = 0]! Y5 \1 ?0 f, I, W1 K
[1 I! t& S: V8 U0 m q1 A3 T
if random 100 < recovery-chance
* [- B( Z8 v H! \5 v% j f9 A% W [* ~. q+ F, }5 C3 t; K
ifelse random 100 < gain-resistance-chance$ \7 B& r3 f$ |. V. M
[ become-resistant ]3 b G( ?6 T7 v/ _& W, {
[ become-susceptible ]
0 e7 X7 t4 T7 v% a% b- ?+ e ]
; o) R9 t8 f) |. @3 I; }$ \ ]# R ~- k9 d1 Y! o2 ]% L
end
5 k# j0 I4 K H" y! b2 K下面同样这个问题不明白
3 h/ f% v9 O- s小妹求大神帮忙！！
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发表于 2015-1-7 11:27:22
楼主