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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:" z' _: H) Z8 p, y
to do-business 2 ^4 Q% O/ B% g# e
rt random 3603 E0 p" A0 O7 s5 _* M/ c- G' R
fd 1) r" ]+ c: ~: K) h
ifelse(other turtles-here != nobody)[3 `. H. G4 s6 ~6 I4 e# x
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.; ^, p( R) G' n# ~3 {3 f6 \# J  A
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 {  |( c: w, c, Z4 _; G; ]: }   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& l" }) ]: C0 `3 {6 n   set [trade-record-one-len] of self length [trade-record-one] of self
9 _; o( P* \9 b. i' w) \   set trade-record-current( list (timer) (random money-upper-limit))3 o% n: _$ ^" a' D6 X

; f+ D2 Z8 J. g+ F% }问题的提示如下:+ i  o7 C! _/ Z0 N
& _  c8 `8 q' Q4 e
error while turtle 50 running OF in procedure DO-BUSINESS3 L# H; v( Y2 g
  called by procedure GO
4 T& a" k$ y6 `5 t- G+ Z) k2 [OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) v. r" g* T1 x; @! W/ [8 P
(halted running of go)4 N" Z6 u& M1 M3 z

, E8 [- K) G/ S. c* j4 `( L1 a这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~' D3 f7 S& d! ~9 P8 \
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教9 t1 c9 x8 ]+ F# v1 T
globals[2 |# O3 C% |# H8 U) `- V
xmax1 e  Q  G2 Y( Y3 \. [3 }; l9 b
ymax
3 B1 S8 u& E& A2 d6 R/ a9 ^global-reputation-list
9 j' W6 M& o6 l
0 f  o% s- }" a;;
每一个turtle的全局声誉都存在此LIST
+ _8 w# l  c) I% Z* T8 T$ B3 z! \credibility-list2 E, G. K& S; d5 B; _
;;
每一个turtle的评价可信度/ {5 K: e# z4 ~
honest-service
5 p; P: k& g1 g, P4 |unhonest-service
. ^* y) j) L7 _8 [oscillation
3 K1 L( A$ h. ~rand-dynamic
& h9 m3 h' n( E& U( h]
/ e4 e9 K& F& P  L* I
. t8 ]  C+ x/ r( Wturtles-own[
! q+ ~2 S3 b( K2 W% Strade-record-all
1 \6 ~4 i, t+ m1 D8 m;;a list of lists,
trade-record-one组成& P3 f7 [3 y! O; F6 x1 [2 V
trade-record-one9 D2 C- u% _5 q) }
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; W! d) b$ G/ f3 L1 |" f! l+ I9 ]% e% y% s9 C* m0 l
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]0 |7 W4 M1 S( z( N5 }
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]4 N. g: Y2 x1 D! D/ A
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
/ v) d) V  x' x6 T% ]neighbor-total
7 j) j8 ~5 _- p  B1 [) ^* e) W;;
记录该turtle的邻居节点的数目
' F) G' x9 w2 Utrade-time
; _" Y/ l' k& W( R5 b, {;;
当前发生交易的turtle的交易时间0 K- [9 P- [& j/ J$ {% L
appraise-give  `( K/ H6 h& ?5 I- i' Q
;;
当前发生交易时给出的评价
" [$ m8 |. ^) ^) N4 ~1 Sappraise-receive
2 R- Q2 U8 Q. W;;
当前发生交易时收到的评价
3 Q1 h# C( b8 k2 Y' \. l! z* o4 kappraise-time
; \2 h) k2 f0 K# d: N% u;;
当前发生交易时的评价时间) V4 s) {3 j/ I$ @1 u4 m& k, Q3 |0 H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 x; G9 F; a0 s! N4 j$ J) ntrade-times-total
* l8 i: d3 h1 _;;
与当前turtle的交易总次数5 Y4 c3 a5 E* G  _5 C7 G
trade-money-total2 t% f+ e: v' d5 Q5 b
;;
与当前turtle的交易总金额
/ h  g4 s, G* g4 rlocal-reputation
" |4 s9 f& x% c7 ?+ P! o7 r( bglobal-reputation9 u& G% }, z9 |
credibility
" p7 \: `( ^1 \0 N# o# c% N;;
评价可信度,每次交易后都需要更新8 w, ]6 M; Y2 h
credibility-all, w5 R8 d% b* V, z) e
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据" R* G/ Y+ l3 K3 ~. x, w
% i6 O8 y0 i& m6 q. S
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
5 E3 k# C9 K$ {" W0 J* scredibility-one' c* b6 p! c  ^; l" g
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
! @: a9 l! N- x  M" Tglobal-proportion
, `" w7 {& P# ?$ }customer
  ]. r/ ^2 [$ m. p; w! v4 D" mcustomer-no9 m  r$ f0 T# o
trust-ok
  I, q5 w( @) D( _" m( [0 ?+ J4 R+ jtrade-record-one-len;;trade-record-one的长度  }% A" M" b& \
]
+ D4 a, R' u2 T
0 k3 d* \! O  Y  m;;setup procedure
- Q! S+ K) t) N% ~) f  i
( h  i; i/ e6 ^4 u4 E( Pto setup% `, L$ m3 f4 `# E
1 @: P+ Q9 g9 R. k! V
ca

! }$ ^5 Q# d9 c7 q9 y! ?( {9 I
# f9 u+ N/ `9 C9 E; S0 ]initialize-settings
/ D: a( C& L* s: u0 |4 A

/ r6 t, `! @& rcrt people [setup-turtles]
1 R$ R. w; d8 `. p; L
3 z" K9 O+ E' p4 }2 q! O: l' M4 F
reset-timer
! G# V+ ]+ K. o, l
3 s1 b% W7 Y3 ?. F4 O! |% z
poll-class
7 O5 G& K8 e6 o; ~  \! U

) M4 N% q/ g5 X# E3 d4 gsetup-plots

) q! d" H/ g' W" s
. q! p* l3 r0 x6 Ydo-plots
/ O6 [4 z* j( p" u3 k
end$ R: F' T3 F. J" g* K. p) L

0 B; f+ R* F- S* p5 xto initialize-settings
# }8 O' q# @/ }2 u* b7 M4 B3 B0 C; @* f# l- H. j' U5 l# H8 [: p
set global-reputation-list []
/ g- L- T& C4 f; ^
# ]6 }# M) ~% f/ f. u9 H
set credibility-list n-values people [0.5]

: ~) W% }% _6 r, w4 O2 R/ v& `6 p
2 j) m% f( R/ ], zset honest-service 0
% |8 R9 s0 P7 \- Q4 N9 Z. ?7 s6 p
: i* u* |2 {9 U' h5 D9 P
set unhonest-service 0
; I  w9 q: d% n7 U0 z
) o: D% ~/ S; c
set oscillation 0

0 T6 M* W2 O9 s
6 L7 N; P$ O7 _. E+ j4 O# G! bset rand-dynamic 0

& \& E$ K% B, Z: ]1 i% Lend' y/ i4 o$ t5 ~# c" l6 z
5 e# q: w5 N( }  ?3 }+ `
to setup-turtles
% T+ j  k/ B, K3 k. Gset shape "person"
. R9 j) {; N$ P  o7 Jsetxy random-xcor random-ycor
0 u, I0 C' Q7 x" z: |5 }# {set trade-record-one []
1 x7 l( k" f. u3 n) [5 O% |
. O, c' z; j. T& B" E0 ]8 p0 h
set trade-record-all n-values people [(list (? + 1) 0 0)] 9 H# a1 F% o0 [' o
" f$ B/ Y$ G0 a% j4 G# c
set trade-record-current []* ^; W- L$ D8 H' i% l6 H
set credibility-receive []: U, f0 y. g1 g5 P% g8 b$ F" I" ^
set local-reputation 0.5& x/ f9 j6 S. J
set neighbor-total 06 }8 w  ], b! q# o/ E: w; z) H
set trade-times-total 0
5 u% b9 g4 P' t7 O- @6 L$ fset trade-money-total 0. X6 g4 T7 k' h5 d4 y& l/ V( Q. T
set customer nobody
- f' H+ x' a! m) {( p& ^- \. J3 Sset credibility-all n-values people [creat-credibility]% v- W0 |( N% ^3 _
set credibility n-values people [-1]
/ J$ B# U4 x" ]6 N0 Tget-color7 e- r8 a$ T5 M% z5 `
9 m& C9 q/ E7 _& D* A- \* U
end/ c; W8 O, l* n, W* }2 w+ N4 q
* k- c# f+ _# y* }
to-report creat-credibility2 |0 Z- C4 n- }
report n-values people [0.5]  Y, V! e$ g& z( Z% x/ ~: A
end2 j& E; t! A# J* W  ]
4 X# u, p, S- d+ G. r) ~
to setup-plots& q4 A8 o* ]" k" G6 `4 L# g

! i3 T( H1 w; |, kset xmax 30

" c' Q0 |. _) u8 f' v1 v3 v# D5 G6 ~! J7 S3 V% ]
set ymax 1.0
0 J2 I3 @6 w4 ?
6 M" j" _( ~5 ^& w2 g$ j! K
clear-all-plots

0 g% t+ U% W+ q; N
1 S* N3 e: H" g# rsetup-plot1

3 K) H/ w! q0 b2 }! ~* [, Q, `7 d
+ ?( {' S" [4 x; \3 I9 W+ a' W, i8 Rsetup-plot2
9 e1 H9 |: m4 o1 I! C/ Y

5 K/ M" O9 D/ ?$ [. z% [setup-plot3

3 N, u4 M  ^% \  U: _7 Dend
1 R  J: F3 S( a1 p/ c9 z! ~
7 `% Q* B& T8 U;;run time procedures2 X: e  N2 h- `
, l8 ?( G: a- [6 D
to go
' m+ o/ J# m4 n- ?/ j) D
8 D# H; f( p* M/ m6 F2 Z8 }9 Xask turtles [do-business]

* Y# T1 J! n2 w. I+ h6 Y% cend9 |( C' j1 Z  S7 J- w
5 J* @. \& \4 s+ x& `8 D! B! K; x8 [
to do-business
3 o* q! }3 w! m# x5 e

! z% y& x8 G! Y0 a' [% l* P+ O- [1 v+ @5 N9 r* t
rt random 360
2 T, o# k9 D% x; E. @
) d  S) ^% i1 h; W$ _
fd 1

( o8 W4 D$ @* K: U+ |2 D& U3 k! t7 s) Z& a' K. x5 @
ifelse(other turtles-here != nobody)[
* }9 r( d' L* r5 N; S+ F
# v1 m+ m$ v* m0 e4 l% `$ ]
set customer one-of other turtles-here
. ~) \; M; O0 ?7 B/ g1 P
% T6 [0 v7 C1 Z/ [
;; set [customer] of customer myself

: E" G% }! V& f  |; W* t9 }# _; j' k: ?6 N! N, ?, Y
set [trade-record-one] of self item (([who] of customer) - 1)
) Z) X5 h; t! L% |( d) C5 u[trade-record-all]of self
/ }2 G  v! X& d" i% v  j8 W" H5 B;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 y( P% j- \* m5 P2 u2 `! T1 @
% ~0 o" h: E: uset [trade-record-one] of customer item (([who] of self) - 1)
0 R& e* z8 i' B5 \0 r[trade-record-all]of customer
5 \" D) B2 f- a+ f3 y4 r

, {7 y3 ~( O- E* w+ ^! }9 Mset [trade-record-one-len] of self length [trade-record-one] of self

5 a* ~- F, G( [, @8 v. _+ T/ D5 M; u9 f* u: G6 E/ v$ b' d( {
set trade-record-current( list (timer) (random money-upper-limit))
& g2 x, v. c$ H' t2 c: {1 F
- a- g4 `, q9 x) R
ask self [do-trust]
2 _) ?6 n+ g' S) r;;
先求ij的信任度
" q5 T  O. A  |" ?: K
8 v* y& g# o) M+ p1 @if ([trust-ok] of self)6 _1 i7 o' [; r/ R$ o) `) b8 F
;;
根据ij的信任度来决定是否与j进行交易[
1 Z* n3 `( X- F! @5 N& C% Zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; f0 m+ d, A- T9 N1 |. q. ]# V1 y$ t. L
[
. j+ P, b& C1 }6 T

9 _: t8 ^6 v9 R  Y  Z9 Gdo-trade
; I* J& ]* f2 n

& I1 R+ f  L. ?7 B; |! hupdate-credibility-ijl
& W: Y, y9 X8 [$ \. z2 n& s

6 p1 B; ?+ j+ d! L1 E. _1 rupdate-credibility-list
: k7 a' ?# g* O, A* E' T$ A
5 |4 ~  C; t: V) |; y. [  L/ |
* k" o9 k% @8 F; w/ `5 C& ^
update-global-reputation-list
- B% @$ p, F8 S. M% Z/ g* `
' x/ Q1 U& Y7 ~' x
poll-class

8 a: O' R/ m/ c& u5 v2 L, h% [+ l! N' @
get-color
; O9 e* H7 d# |! @
9 Z3 [6 D" Z; R% B
]]$ z- x! R. K1 l5 C7 @
( m: C+ o: T# h  C
;;
如果所得的信任度满足条件,则进行交易3 G$ F  }0 D4 l- M
1 S' t4 f! R9 T% f) J& n
[
1 a" i, U* I) U% q5 o8 u! s

' B  T; w" H4 j0 ]9 \" L* F. u5 Hrt random 360
$ v2 I% g9 [0 D( R, P' P

, _' W5 u' n' }/ xfd 1

# r( \. ?& _1 u% {, T6 H  I9 L6 ?. h: F8 c% H* |1 d3 S
]
# ^$ ?% e/ w/ Q. f. P, n3 G8 ?

* G6 r' Z: N; P6 v* O3 m" bend
# d7 C! i' t, |
9 e+ y3 w; K4 _3 ]
to do-trust 3 ?& N# Y7 p5 n6 Q" E: z0 G7 I  c9 B
set trust-ok False  l# i: \! W* U2 B% Y

- j1 P8 t1 a5 ]: T

2 @, ?( [% R' P# @$ g2 mlet max-trade-times 0
. ]) G7 y  ]8 _: B6 @# b3 Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ [6 a8 ~( y4 c
let max-trade-money 0
4 M% y! Z( L3 i: d" Z) D) H5 i% _foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: ]1 Y% x7 ^: M# i0 ~  V: o4 glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- o9 N7 q- l# T/ k5 k" r, \2 c$ p1 D! S! [. i0 V. z" W( k
. l" N: j8 h( X; h: f3 k2 ]
get-global-proportion! w- x; ~* Q( b8 V2 l" u4 F$ f
let trust-value
1 l  `9 d+ ?! D0 B9 f4 vlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

4 X* t: t# x" K/ L' R2 E0 ^if(trust-value > trade-trust-value)4 B/ g: o5 v5 a5 T! D' ]
[set trust-ok true]( g' Z, i' _# `- E
end
. I4 H/ [  X/ t9 o- D" T4 O6 M, q9 a, k9 r
to get-global-proportion. y/ ^$ B& T3 _4 q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& r5 B6 y/ J- ^! n0 }[set global-proportion 0]0 m  T7 j3 X" e) V& G4 [
[let i 0; H9 v. y. H. U2 v
let sum-money 0
% [: `2 `6 a: M/ ewhile[ i < people]
; E7 U# X; p) w: o3 r[+ N: m/ B3 w( _& K
if( length (item i4 l' G8 L0 Z8 l( e' y* B# I
[trade-record-all] of customer) > 3 )
7 h$ z' \( d9 `4 o# h
[
) k# p$ G" f7 M: o$ c$ k( _/ v/ d1 ?set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 g7 w. Z! v, o]
3 n" `; B  W, `  K]
2 }5 H. L0 M# X' C9 s$ i4 i. xlet j 0
, X! _" a6 l; v& clet note 0/ l* ]( B  o7 e. h3 @# W& a  H8 |
while[ j < people]
% V+ h& Q5 v2 c2 v[
3 g( l& C# u" m6 Bif( length (item i) ]' V+ }8 b" F/ r8 \$ b' @
[trade-record-all] of customer) > 3 )

" d; @8 Q0 d7 m6 @) @! R) i$ k+ G[4 K* G9 w; A% Z1 f: r1 ]
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): ^% |& D+ e( _# A+ H8 z% z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& H" t! g$ B- o/ W  i[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' C5 M" q5 i) e* |. _]
: c' G+ ^8 J$ [# ^]
+ Q+ u& X% h# v, Vset global-proportion note
4 T" X) g1 i8 i5 J7 C: z2 h+ ^+ i1 ?]2 K: F' P: o  `% e6 ^- D: h
end
6 e& K, w8 t' ]+ R. z& v1 _6 m, B/ i' V* a& O( o3 }7 t
to do-trade
) M% W. e  }7 c% h;;
这个过程实际上是给双方作出评价的过程
7 s/ y8 M) c3 A* B: Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 |  _. q2 l/ k0 N6 b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: E$ O+ w) T8 s% v
set trade-record-current lput(timer) trade-record-current3 Y' v* |$ P( {0 `4 o* K; ]0 `* t
;;
评价时间9 M/ E0 j; ^, Z1 c! ]! Z! e
ask myself [
+ _4 L6 c0 j9 ?5 C2 C: C6 o6 S- Oupdate-local-reputation! m" g0 W/ v* y8 k
set trade-record-current lput([local-reputation] of myself) trade-record-current3 v3 G1 h  Y7 a, Z% W& V) G, R7 h  v
]/ d5 m& k+ U* K3 ^' H0 i
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- Y+ Y4 z% T# Y8 p;;
将此次交易的记录加入到trade-record-one. {0 F: R) ?; }) k9 p2 m! N1 @
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% Z9 C; q1 u& m; D6 c
let note (item 2 trade-record-current )) r* u! B% v+ x. w! V0 f" s2 b
set trade-record-current9 Z8 w- X* V) y
(replace-item 2 trade-record-current (item 3 trade-record-current))

* W5 y0 S3 P4 G; W% r7 g- Nset trade-record-current
+ B( w3 {$ V0 U6 b; t+ v(replace-item 3 trade-record-current note)* Z. ?& r& _+ K+ p6 |# S' m
! T$ J$ X2 ~  v7 Q3 b2 N

0 Y/ s  F' t% o4 e) @ask customer [. [. \; s" R( }- k; C! ^
update-local-reputation
# c3 G4 P: w  k4 ]+ ~, n$ T7 {; Pset trade-record-current
. [. C" c5 m7 e, S8 ]1 S(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# q9 l: e  X3 R, I. K: [
]; x  F# w* t: ]9 i3 T

) \5 A8 i. Z$ b
; J) B# w4 D" u4 p* b% |" ^
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' c( x# Z4 w* P( G8 M

7 Z: t1 \5 Q, _9 r) Zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; W) W6 S: R2 h# x' g;;
将此次交易的记录加入到customertrade-record-all
& F7 @+ Z; k' R5 u* A5 A/ S" oend
5 |. z: l. e( q, L# N  G# i  x# g+ E0 `/ l* U( a
to update-local-reputation
& A5 c  {6 N/ U7 ]" A  Eset [trade-record-one-len] of myself length [trade-record-one] of myself
8 s$ x5 {6 d! b3 `. J9 D& u* V6 ^. Q# t. j* s
# Y; ]5 t: l& x* {" h: R( {
;;if [trade-record-one-len] of myself > 3

) j# J, _8 \9 w; ^update-neighbor-total
( {/ ^" _9 j  W) `) K;;
更新邻居节点的数目,在此进行
: {9 C" c4 {. U* F& R: Y; Plet i 3
4 u0 T' e" n, h& {let sum-time 0
. W& K4 `3 K6 |9 g3 S! qwhile[i < [trade-record-one-len] of myself]  R' z8 W" S% W  N
[
. L) i% n& E. x6 vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# X: q4 ~" Q; ?) J( H: T
set i
3 {7 @! G, [7 Y4 r) G# t, g( i + 1)
4 |9 p" x; J, }: I
]' Z/ c, F8 m# a' y
let j 3& T3 p* E" N( R4 G* N) M+ R
let sum-money 0
% ^9 [6 j5 H' Ywhile[j < [trade-record-one-len] of myself]" k& B& x$ b) |" J% }
[0 B* H9 I, L% O7 S$ I
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)8 c1 B; R/ W: p7 ]: Y' ^" W6 S
set j* k0 s; c7 g$ ^; X1 s& A
( j + 1)

& k; x1 ]7 s- o( @$ j( _]$ k9 [3 i: @7 E/ Q/ a8 k
let k 3
* R, ^, A( r( L2 Plet power 0/ c, t% n' z1 h" A
let local 0  p, j9 w) s, C' H7 p& g" r6 O& y
while [k <[trade-record-one-len] of myself]' N4 c6 m- v5 H4 f/ e; `  e
[
' ?8 v% x6 |$ f% Jset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) / U3 _4 m! Y/ f7 s0 K0 q
set k (k + 1)
5 j+ _& [; A, _9 a]9 d/ h3 |$ J; y% c- }  G1 T
set [local-reputation] of myself (local)
2 \9 T& z) {) y1 V( iend2 b9 n9 d: P( y+ w; y% p( c4 A* S9 U
. a- L2 k0 Z+ c( ~- b! w! m+ k  c
to update-neighbor-total
, b  ]. w% |( O& l4 G5 P& _, k7 s; `+ ~3 a( B
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 d) W% Z+ a0 g7 w2 K9 C$ }; }
1 Z& h) O0 R# v9 O0 {

3 k1 e4 N5 m; h& Z3 j+ ?% hend, |, T: t' ], V8 o9 _
- |* K+ K- @' U$ @. a" `
to update-credibility-ijl ' w* k" {+ O" e" J+ h5 g3 I6 ?
" X$ x9 u) W7 d6 L5 F
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。! ]; c* Q" V3 s
let l 0* m9 c, f! Y, s' c+ G$ n
while[ l < people ]  L7 }) s2 G: \" G
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价2 f* B' A- Y2 ^
[9 |) M" y; D% S, _
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 h) F# x; x- q
if (trade-record-one-j-l-len > 3)
6 L. }6 L. }) p" L% n1 [5 n4 d[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
' v! ]2 T: W" Ulet i 3- x/ {; q5 I* C, \  q5 A
let sum-time 0
; B4 b4 b5 v1 @9 }" _1 wwhile[i < trade-record-one-len]
# ~# Y: Q6 h0 Y0 [3 w[
0 A* m, X- ]' t0 ^set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% h/ d2 j/ C9 r, A! ?
set i$ i  w: Y' I& _
( i + 1)
7 K. I8 a. u) m8 s
]- @' g+ e; a4 ]" t7 c
let credibility-i-j-l 0# Y& h6 v& \# u& i3 G! d5 v: f
;;i
评价(jjl的评价)1 i# E0 V6 R; s2 A
let j 3
! l( K7 p# L! a$ W: F3 w, N! ~9 y0 Llet k 4
! t7 u" H* A# J- }! S* r& Nwhile[j < trade-record-one-len]% Y8 J8 D  J/ {* P
[
1 O3 \3 E1 ~7 J& ~0 |, y" C6 Ywhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉  m/ }, g" l8 q) c1 U7 N
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
) T2 g8 E. C+ y* j0 i4 ?  J* fset j
8 z- n  T; }  ~( j + 1)

9 N) k7 g+ _6 U- p) b7 h]( H" j3 I. D- j* A. r
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))3 c3 T9 L- t( ?/ v/ C3 l
+ s5 F9 k# Z) Y( X  `

4 u/ G7 {8 ?( I8 Y9 O6 n9 l  ?4 `let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): W& V) z- a2 i
;;
及时更新il的评价质量的评价' ?( [0 M. A1 f! u$ Z* H
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; p' o2 [( j5 q8 p
set l (l + 1)
0 u9 x5 U8 d2 f5 y9 f& C& N; []9 G4 d. i8 P! s6 A" D
end
% }# a- }. z$ w$ y# h- |8 c" |1 z. o, E3 x) s' V' b
to update-credibility-list
" a6 P) t/ @/ j6 zlet i 0
& Y) G6 q$ L$ q; w2 dwhile[i < people]! @& d; R2 }2 S& @4 n3 c
[1 l5 T  e2 e3 n. q  t7 Z" Q
let j 05 @) \, O5 ?* s/ k( U5 ?# f
let note 0- g# |  n4 p' q' e3 ]- B# `0 M
let k 0) C. _, J; X6 y4 B1 ]
;;
计作出过评价的邻居节点的数目2 |- n2 p' M" k' L" W. _5 R1 R
while[j < people]3 {6 G. G7 i% m) J( ~0 N
[  `! o# G- `% N3 _1 N
if (item j( [credibility] of turtle (i + 1)) != -1)8 D% i) A8 x; H' N" J# c
;;
判断是否给本turtle的评价质量做出过评价的节点- @" T& ?7 I2 _( X8 Z. y, }
[set note (note + item j ([credibility]of turtle (i + 1)))# Y3 U0 c- O+ J& C) ?/ g3 Q6 ~
;;*(exp (-(people - 2)))/(people - 2))]

& X% q0 O* E7 j! Q/ I: mset k (k + 1)
* _# F3 h: \3 [- T% p4 j]
% |- ]( |0 m# A4 m, f6 Gset j (j + 1)
) r  N% O+ l$ F* ~; T  l]& S4 a6 B/ Q. Z5 R9 I% v0 f5 Q
set note (note *(exp (- (1 / k)))/ k)$ A% A0 G$ q7 |3 E/ ]
set credibility-list (replace-item i credibility-list note)
4 t. H+ |7 p& A1 Rset i (i + 1)
# A! o! p* H3 s: o: |; J' V1 _1 B]
3 W% n) `6 f+ `/ B& cend
4 K$ `  o0 A+ j6 A8 c
' ?; k# p" T: z/ b2 c' ito update-global-reputation-list
' ~& U7 G4 z6 @let j 0
" Q  b7 Q6 h1 fwhile[j < people]
& p2 F" V( F  z. b/ [[
( K! \" O/ ^4 z4 r" Clet new 0  h' d/ s5 M( L' e
;;
暂存新的一个全局声誉' R- H: _& d; O% L; i9 i
let i 0! j) \& Z2 E" E5 B) S
let sum-money 05 n4 i: O* Y* }0 H
let credibility-money 0
* J0 e+ v! u0 i! ]& Fwhile [i < people]9 }" W: j. \# s( `" F
[2 C. W3 K( g, S( G2 [8 f
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 S2 E0 y$ A/ t' ]3 d# B8 `set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! B7 d$ ^) P/ Z
set i (i + 1)
1 N$ a- _  r0 D$ g: X6 l]
7 F  w( O) p7 v. P; ]7 K1 Xlet k 00 K3 m! E2 w) h8 X+ f" {% L# r% v
let new1 0
, a9 t/ v( w, b/ \- w+ |1 F' |) Twhile [k < people]2 g; ^. G! T- L- z& G
[
$ z5 s( P; f7 m# |set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
0 X* }& z5 p# Y0 |set k (k + 1)$ }/ d, r  P- ^$ n) s, f
]0 V6 K7 K4 p9 Z$ {
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( W9 A5 y3 s7 g
set global-reputation-list (replace-item j global-reputation-list new)
: |8 N/ A, Z7 a$ w3 u% D; Lset j (j + 1)
, O! h; l( p& r8 H% B]
% `2 k  E$ E6 @' C8 M4 ]end
) P( p9 F* I1 d( \& O  G
8 Q% a: D% c/ W( N$ K4 z( @' _2 j  ^. o/ i+ U1 P( x' }+ V

+ i& m3 S) h! u$ q" K( Bto get-color
. x" q% b3 O, V5 J0 e5 v9 |5 B; u  ~; W( b- B6 {
set color blue
5 }3 _! \. U* n) O0 J1 p
end
# S* K4 l% O' M. L+ c) D$ R& D2 U$ a; \* J# F4 G$ `- m$ u+ h% r
to poll-class
$ C* x4 N& K( S, K9 {: xend+ T# _& U: \6 M

7 K, F1 {# i0 {% }; g8 eto setup-plot1
1 ^( c5 t1 m* j/ |" {
4 S9 m( D" Q! lset-current-plot "Trends-of-Local-reputation"
& d; Q- A1 A) L8 m8 g) r

( J% q& t1 {5 J$ V: rset-plot-x-range 0 xmax
& l  M+ H4 P3 l+ }7 I% Q  r6 N# u& C
/ U* d, g' ]) g0 [- J* b
set-plot-y-range 0.0 ymax

' `) O1 Z1 J( P9 Iend0 ~8 \7 L1 n+ N

6 R' ?5 [" {2 A3 jto setup-plot24 R, ]. k" a" C8 M( @0 _
2 _1 z. w' K. w- c6 G& s7 V% O
set-current-plot "Trends-of-global-reputation"

, }- c7 `2 d) Q7 M) o" `1 w
6 K0 S$ N+ h. [) P/ q8 Y5 fset-plot-x-range 0 xmax
: j  u. i8 z( x( I/ V- W7 J
8 k5 i( `5 J( N# l
set-plot-y-range 0.0 ymax

- j3 P; h3 u' j/ r) z& T( D+ ?end9 g1 r- R/ J4 {5 v
0 ?( `* R% F+ ^+ R' d+ O% N7 L0 ~
to setup-plot3# n; R9 H) J& F" |  k. B" X- c' x

- `* ^. w+ M+ i, N( Aset-current-plot "Trends-of-credibility"
7 X8 N+ v  X+ W% @  V

2 Q+ I( C3 R" ~8 Fset-plot-x-range 0 xmax
: M8 d* h# y6 h0 R9 s; |
3 i3 Q7 r& m# `* X, i9 J! M6 ~9 k
set-plot-y-range 0.0 ymax

; O  e4 Y9 V2 N3 S+ L: cend
& R! `; w4 t# V) C7 w- b+ l' z8 k
) V: ?6 j$ h6 Sto do-plots+ W, N; G- c6 U; Z/ L
set-current-plot "Trends-of-Local-reputation"- _) g" ~. I# z$ @
set-current-plot-pen "Honest service"5 i% n' K& c% t( G. W8 U
end/ j; ]9 Y# j, y- N
5 r  f/ t( K0 H  F
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
' J4 D! ?0 g4 O, B, u1 Z# N3 [9 v6 Q% B/ ^0 c' p
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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