在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus0 v9 i& D6 ~' t, @9 }6 r
ask turtles with [infected?]$ X# J5 v7 G' ~% A5 A% n
[ ask link-neighbors with [not resistant?]
( |+ H9 M" Z' @0 r [ if random-float 100 < virus-spread-chance1 C0 M) z! o1 _9 R2 m# W2 |- a& a
[ become-infected ] ] ]
& E3 V( y$ E8 {+ ~end
/ f ?5 c1 q1 N) x# L0 B3 @5 }, a这里为什么virus-spread-chance大于random-float 100,就可以判断出become-infected呢？7 P* u0 v% W* E1 ^' T
to do-virus-checks. D; J0 T B; Z; @ H- S
ask turtles with [infected? and virus-check-timer = 0]- K( d+ h! M% ]
[
( j. D: b) a, p4 A0 f3 G5 C if random 100 < recovery-chance/ v& k, b: }; Y7 F( _
[
0 B- C6 @1 s6 w' Y* P ifelse random 100 < gain-resistance-chance
: n( ]/ Y+ ~+ D( | k5 K) N [ become-resistant ]
4 n7 | W8 z9 N# q& u$ `( U [ become-susceptible ]
' f% |1 g( n l. G* @ ]
, [ p& `9 `4 ?+ [2 k7 k6 i ]
; Q0 B3 Q- h; }2 G$ Z& dend
# v" F/ S0 p1 \, T9 `8 z下面同样这个问题不明白
1 ^0 s; N3 ], V8 n1 z& b小妹求大神帮忙！！ 3 m; m* B1 J4 [: K! U
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发表于 2015-1-7 11:27:22
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