在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus
8 Q3 A) g- @& Q2 p% ^ ask turtles with [infected?]
" g C. f* o( l# _- V) E [ ask link-neighbors with [not resistant?]- C* o4 q1 T! F" j; D8 g# R9 B
[ if random-float 100 < virus-spread-chance
) p& Q o5 V. Z+ ` [ become-infected ] ] ]
R U9 Z p" B3 ~+ n7 Hend
" y& L( N! Z* U2 d& A: z" ^这里为什么virus-spread-chance大于random-float 100,就可以判断出become-infected呢？2 [ G( ^$ ?3 N$ s
to do-virus-checks2 \& o+ W' f# @9 O; M
ask turtles with [infected? and virus-check-timer = 0]8 V# I& n. |: L, F/ N2 H7 |( w
[
" T. s' @$ u( s" a `9 ?" j$ u if random 100 < recovery-chance4 H, g, F1 {" T! |0 R" S' H8 g+ i
[- r- B6 l: d$ r: S6 Q% _0 e. X
ifelse random 100 < gain-resistance-chance* T7 g7 E% f' L$ \* ]' a+ l
[ become-resistant ]# A6 o1 z5 I- E! \4 ?6 D
[ become-susceptible ]- l0 Y/ L) F1 B8 D& ^; F# \0 V$ w! `2 o
], j' F9 z5 S) o P- y
]$ r) q/ R0 L7 B& u
end% A: o# E2 \, |8 J8 r8 e
下面同样这个问题不明白
* Z1 Y4 _+ ~: u) d: q小妹求大神帮忙！！
/ Q: O4 K. w) V: W/ K c# ]0 z |
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发表于 2015-1-7 11:27:22
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