在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus$ Z1 Q4 G+ `; Q
ask turtles with [infected?]
* X: w( S+ g: ?, \$ e8 @4 P) ?' W [ ask link-neighbors with [not resistant?]
5 q. o; D8 d% c& [- d7 f+ x- ? [ if random-float 100 < virus-spread-chance
/ D8 `4 U4 s" [# V+ Z7 f- X, }+ f4 v& { [ become-infected ] ] ]/ s8 {+ @% Q( L/ k, |( ^: }- o; }7 j
end1 O. q( f U/ b+ ?0 o$ ]
这里为什么virus-spread-chance大于random-float 100,就可以判断出become-infected呢？
+ L; ]' D, X' Q) Y& Gto do-virus-checks
6 ?) T% d8 p# [4 a! J2 { ask turtles with [infected? and virus-check-timer = 0]# K( C/ ^- H8 Z* ~ x2 A
[3 a3 D+ c& F3 q. o9 M3 |( w! M
if random 100 < recovery-chance- C! V7 ~* G1 M0 A$ G
[
+ u* L" A" O3 | ifelse random 100 < gain-resistance-chance' s- B% z2 ? {6 j5 O
[ become-resistant ]
; e. K3 m y' X6 ^' d& l [ become-susceptible ]- ?7 ~" y( G4 A S, t. J
]) @! W7 D2 T6 G2 B7 k" |$ _
]
8 s0 H0 p( s2 i/ C7 E" Tend. ^8 R' {8 G, ]$ r9 T
下面同样这个问题不明白
& a: [: q$ {" F" U& J8 `小妹求大神帮忙！！ + g- `7 m. J: M, P. J
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发表于 2015-1-7 11:27:22
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