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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:
+ V  M3 u. q, l5 Tto do-business
5 G: D* R8 p" {7 s: b0 [ rt random 360/ k8 F; Z& t( W/ v" E
fd 1
8 u# O) M, e  \4 g3 m ifelse(other turtles-here != nobody)[; T" J3 s: y8 n4 d. t0 G
   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.
/ q  W8 x1 E9 q- Z6 s' _2 k" O   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) m8 m# m5 ^* e" j( W  z
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( k/ `  q$ Y( \0 x% q( M; I6 C   set [trade-record-one-len] of self length [trade-record-one] of self% F; V5 G7 a2 Y' f/ h# P5 I$ p! g6 W
   set trade-record-current( list (timer) (random money-upper-limit))
7 X: z4 O# J4 S( s; q
+ Q0 E- ?1 n: i$ D. ?& f! B问题的提示如下:
) W9 \+ F8 P2 A6 y/ L/ G4 t3 s# h" c2 `, O8 W. m6 L2 ]" [& Q; J
error while turtle 50 running OF in procedure DO-BUSINESS
, H. ?  t9 j. ~$ S5 G" M& \  called by procedure GO' j& T5 U  A( N
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 j" g7 l( {" t
(halted running of go)+ I0 T1 f* |& v: g: v

* y  p  W% }2 F: i5 D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~~; g- X) H/ d4 P4 f
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
$ K  Q1 h7 d4 m" j9 _. ~globals[
! v; o8 z& a! a9 Jxmax9 g5 ~$ |% ~, d
ymax
7 z2 z' W% q  ~3 u% }5 k7 Zglobal-reputation-list7 _9 K' E7 U' A& L
" M9 B  M. D2 x& k( b# w
;;
每一个turtle的全局声誉都存在此LIST
6 A7 S, M( A; D1 E7 Q3 U7 N8 Lcredibility-list
. M( T% T3 Z8 g/ B: q& K0 v;;
每一个turtle的评价可信度5 e1 T3 n: o+ h
honest-service
# k  g  k8 l/ w: ~0 tunhonest-service- u5 ]/ q1 @! D/ {" Q' H2 @
oscillation
4 l. J  O* |+ u3 k$ b1 Grand-dynamic+ {( S( Y# A, s+ L
]' t* k5 F, p& _3 u; z
4 N1 Z6 I, l6 @1 _3 V
turtles-own[
- G3 H) g3 }- g. Rtrade-record-all1 r8 c0 ?1 S, S8 }9 Q
;;a list of lists,
trade-record-one组成
* O" A* J# G: d% k( p+ _trade-record-one- i* e& O/ m7 y3 _$ q4 S) d
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( \, y8 Y! G; z. w$ W, B* m- P/ W4 k1 Y
1 Q% |" X. q' e; i5 b' K
;;[
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]]& @1 w  r* s$ P- G$ Z$ z
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]
# i7 A/ C  i- z: l8 W# Y* x" c- acredibility-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list3 Z3 I; B0 X+ W. d/ |
neighbor-total. H' J$ |0 }  R
;;
记录该turtle的邻居节点的数目
" m) X: K( P! ktrade-time
- x! b5 E5 }- v* k9 q4 {8 k  i;;
当前发生交易的turtle的交易时间
( [8 ?2 e# ?& ~7 K5 L3 H- `3 ^appraise-give/ T$ `$ I  z8 ^& q6 v- l6 ?
;;
当前发生交易时给出的评价
- G- a5 O) {: w& L- Uappraise-receive- C4 s" }) e  `+ U
;;
当前发生交易时收到的评价
! t* ?# H& [! t4 S. ?% f4 ?- zappraise-time9 n! V; y3 u) a4 P/ e) i+ O8 x
;;
当前发生交易时的评价时间
1 E2 l4 }; K5 ?7 P$ Hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉4 }$ j) m: M- ~9 ^$ M& ?
trade-times-total/ s- D; \" @/ U, o8 s) c9 U# I: J
;;
与当前turtle的交易总次数
: v9 s) o( a& _7 z# @; ltrade-money-total8 m+ A  C6 v8 ^7 T* q5 B
;;
与当前turtle的交易总金额) E: g2 i) x! _2 r6 \; r+ O
local-reputation
$ ?/ \' ]8 w/ j/ r# r: H; Iglobal-reputation' Q- y7 Y' e  h2 }5 x
credibility
; p  A2 ?  }/ W6 H; _! o' m;;
评价可信度,每次交易后都需要更新+ a# N8 `5 v7 U1 V* T
credibility-all2 _' }9 |: d% S! U, q8 S0 {" A# T3 x
;;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
% K0 o! E$ T% ^" [' t& x. a$ V: Y; j, y6 K, h3 E
;;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0.58 n1 [% o; o3 h/ q  ~
credibility-one
: Z1 R1 t* I' W& q' d% b) ?;;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people8 W$ S) G+ q0 L6 Q$ o1 n
global-proportion) c: v, G/ A/ w( Q
customer: [8 {9 [" q# _1 y- W" a( }( h7 `% S
customer-no
1 }0 ~, o& r; {) A& @0 Ytrust-ok
4 m$ j; l% t* T" y) i( x$ k& R1 Etrade-record-one-len;;trade-record-one的长度9 ]; S; f! h- z
]6 J" G8 f4 z6 b8 m' K3 C
* Y/ P) L8 v' K- v
;;setup procedure
& S% f( z' v0 q9 O+ x
. n/ s1 O* E0 n, a% Uto setup
9 O$ _, K6 G# P
, j7 w, r4 F# |. Jca
- {0 L2 ^  D7 b* v3 U9 `5 C% w5 ~3 B

; l& l; D8 F# r' l* W7 L% oinitialize-settings
, S/ T. P; B3 n1 {. b
/ q/ |8 M& K! n; w& n3 W: N: T
crt people [setup-turtles]

; |! X1 R3 L0 h3 m9 B# o+ y( M) u0 f& r' k  x, O' y
reset-timer

" I- b6 x; G6 N+ K0 S- z1 E  X/ I) x! ]2 H) f
poll-class
8 o0 F4 w5 c5 q* E% Y  U7 k' }
& `6 f: c5 e* y6 ~
setup-plots
1 |' p: H0 I$ V/ z0 i: s

; _5 s0 ~/ n: z2 `do-plots
  O/ b1 {7 X# p: T% q7 k" v* [
end
7 b" m% a, |. A! X) B
0 O+ f  [' o/ ?9 {to initialize-settings
9 i. L) }9 c5 A: Q' U7 T$ k( K7 @! M8 i0 r- F3 U' N
set global-reputation-list []

0 R% ~' t& ~, B0 G5 C% ?) q0 `& }: q
set credibility-list n-values people [0.5]

/ U. ?; ^& P. J0 o
) x/ D% A$ e& jset honest-service 0

  r8 ^! M% |* v* n/ G- H% m. V9 J% u  ^; W
set unhonest-service 0
! [4 w8 X2 o! I. D

- R: C" y. ^% Z* d% R/ }9 Pset oscillation 0

1 P# \" g4 S" T6 Q/ l8 M
# A1 o6 V6 C/ q1 W/ qset rand-dynamic 0
2 t/ O6 v% g, r8 J- \
end8 i+ W5 q; K- B' E4 J

) }5 r# W1 m8 e) S) O4 X* C  Dto setup-turtles - [- g7 d# t9 z- h- U) P  G6 J  D
set shape "person"
5 K  w! m  @4 T& ~+ ksetxy random-xcor random-ycor
# ^9 V7 F  g2 f* Zset trade-record-one []8 w0 s& K4 E) A
$ x2 s4 D% _$ K
set trade-record-all n-values people [(list (? + 1) 0 0)]
7 s$ ~# t1 K6 _& Q9 E! S
: [4 z+ N% U  J7 F, p% V* X
set trade-record-current []
1 s2 U1 c, x; t( i, @9 Uset credibility-receive []
9 U$ u  n1 d2 ]* oset local-reputation 0.5
- Q% T0 j8 w% M, o3 Wset neighbor-total 04 K% Q+ g( I+ v$ L
set trade-times-total 0
4 j, ^, j+ x# e! ~set trade-money-total 0
- K8 J& V9 p/ m" _/ Qset customer nobody
& w, \: r3 Z% y! [set credibility-all n-values people [creat-credibility]
# a8 M, }& j& H9 ?6 m1 Yset credibility n-values people [-1]0 k4 q0 }& X! i5 h7 V7 g/ K* i
get-color& G9 S' {; @9 u2 @  U8 I$ }
' {# @. |  m1 ?
end
2 _# H% T, \  i! Q6 R4 l4 N% B5 x* G/ A" s& ^: L) S  S
to-report creat-credibility' `& U! O- p7 j, Q
report n-values people [0.5]  {2 \# M4 N! X/ a  r6 }) g4 _
end
- I: {/ L$ Z! G, B
+ F* d7 B% [) Hto setup-plots9 `9 m. q/ b; k: r9 Z
0 F) u3 u) T3 ~- f- a$ r3 p; a
set xmax 30

' T& c9 E  a0 G) t) B% a" H. g" x4 N+ R8 |( s3 r) F# p+ \' `  r
set ymax 1.0
  g) j. w5 T0 m+ U0 g

% M& f: t$ t7 s- xclear-all-plots
! L1 E6 h( W' |
, M! Z8 }; Q$ t2 d
setup-plot1
# K% G" h' t- a

% n; ~- D; y; F" \setup-plot2

1 p4 q4 y+ k8 ^( H3 j( Q. D( A
; D( ]: r6 c: ?  n6 p2 Z4 k8 Msetup-plot3

* i1 ~  e; X4 l7 {7 zend
$ D' {% ]# E" K5 I9 \+ h  I% g" u  i% B3 |9 u) ^* y: O
;;run time procedures
, c  R) b( G7 v7 Z8 a5 b( e1 I6 h: v* b& j' i
to go7 e2 d; [4 t5 y
4 p; H2 |; R% f2 E0 X4 q6 o
ask turtles [do-business]
  s6 l4 z/ ^3 [0 D% c, D+ Z
end
, q! h3 ]3 o7 d3 w. A' K
+ l9 x: R5 Q/ K% Q7 M: t, _0 {to do-business
- |) t2 k6 ~  L! N& c
; D9 D, P3 y. D& N% q
/ z! ~$ _! o) x
rt random 360

2 t- h" D* ?: m3 m
- ^  r8 a9 L  l. ?8 ?fd 1

) L# C, c" V, Z9 Q$ X7 Y) p# d6 q3 i1 e4 L  C7 J4 q. |# X
ifelse(other turtles-here != nobody)[

2 f5 x$ u# d4 r- M$ l+ ~; [& Z! ^7 e3 [7 K+ o# C
set customer one-of other turtles-here
) N- `; M% B' x: n' |

: p& @1 o' Z$ H+ T' W) m;; set [customer] of customer myself

0 ?* Z. [6 ]) {3 o; b6 x$ D+ y- ?' [3 w! a% @! Z6 b
set [trade-record-one] of self item (([who] of customer) - 1)
# ~. U5 u4 s2 c[trade-record-all]of self
0 H# c* i, F7 s9 v;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# y. f5 C& q  [+ K8 J9 r, q
9 H0 S0 _2 c/ q  W- H; J2 ^1 Iset [trade-record-one] of customer item (([who] of self) - 1)
( v- ~% E! \% e+ V' |1 E[trade-record-all]of customer

- b2 J! d9 o3 B0 p4 H5 ?3 h' Q" V7 J* f2 w, h# \
set [trade-record-one-len] of self length [trade-record-one] of self

8 c8 z5 t! u" F7 K7 J' Q/ Z" A* _9 V  [- Z5 Q) _
set trade-record-current( list (timer) (random money-upper-limit))
' O+ R1 c: g- @- k5 j8 H
: D/ f' R. V' n% [( H' P* g4 K
ask self [do-trust]8 {7 }, ^5 W; q( b6 ~' k$ J
;;
先求ij的信任度7 y& n$ w1 R5 F  I; l" {

& g. i1 r5 ^7 g6 C, j2 I7 ]  mif ([trust-ok] of self)
" z" P% @* e) n9 F;;
根据ij的信任度来决定是否与j进行交易[
% I3 f/ h$ V3 d3 T4 ^7 Wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 R( ?4 i- g" b
( I& m, b' j' ^5 I
[

( u0 g8 w- q8 ~, b6 I( Y; j3 e- i& j* v
do-trade
/ @, }& A! d4 r% k; k+ {2 k2 Z
7 [0 j2 G3 C  I
update-credibility-ijl
+ j+ }; q! D# w7 {

" r7 Z  @- L% wupdate-credibility-list& x) W" ~* H  V* a* Q6 X- U

* C3 }) f  B& e; O6 u" z5 N' d7 x; Z
update-global-reputation-list

; p( }) r, |& p( K- [* r
: v5 O7 v* q# z. `2 }9 npoll-class
+ F; r* A3 ]& H, _) _$ @

& h) P2 Q# C( l; t  _5 a# Sget-color
( w1 ]: i4 R) G4 x6 o+ g

/ R: G& t1 P. w" S]]
9 ]% C, n, V* \3 N- _: O4 ]/ @! b/ x! Q( c3 i5 f
;;
如果所得的信任度满足条件,则进行交易; F% i5 v/ }: Y
, U; E& S7 K6 E" y4 s3 E! e8 g
[

8 n/ S% h  n  H/ D0 s
7 a* i+ U9 V3 M/ Z! G, n1 r5 Hrt random 360

  `3 B7 q$ W6 N1 I: l$ Z/ O* S2 P8 H* y$ w* n' a/ S& m
fd 1

5 p5 z6 f5 o! B! h: I. D, F/ E3 l/ y7 c: ?. I; E
]

: g# L9 y6 A) D! a0 @! M1 j& f" z/ }8 n* E
end

. r9 ?1 S, g9 i% L- Z: G1 \; {  D6 p# @7 ~* r
to do-trust , i, B8 R; I& y% }: e' f
set trust-ok False
2 [' o4 q6 l0 a  ^6 y" D' Q3 Q
7 C- M% {' Y  K; V/ {: E8 b5 K

+ }! Z6 M: K4 g0 c: S# Glet max-trade-times 0! J( e+ o$ j7 Z7 V: w$ P: k1 A7 E
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' p2 Y* e( _* Y8 O; L" q. v4 {8 D' Olet max-trade-money 0
" L) f1 J) E. g1 ]& K' G- Oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* f8 _6 G/ o2 Q, w/ Llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 n' `$ j' J2 G! Z% V
$ |  J( o) N) m2 k6 a" y; P

# {! n6 i8 C+ T* R# d+ ~get-global-proportion+ O/ h6 b" _# Q& M  D& X5 R
let trust-value
5 m9 F0 _7 k4 H, N6 `8 u! S" @local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

6 P# \5 u& `3 m8 _' j# Y" sif(trust-value > trade-trust-value)" W. \; A, a* d8 V5 t5 [3 Z: N
[set trust-ok true]! n) Q* [8 S0 f. U
end
- ~" D7 {: x  V1 F
6 d6 \, Q( B8 r# V' Z. Jto get-global-proportion1 H! A; r, i& \: Y" w. Q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 n. A, K1 A9 i1 \
[set global-proportion 0]
* W  p- n- _% Y7 D[let i 0
  r6 d0 L2 `0 `  |: c4 Plet sum-money 0
' F! L& ^, Z9 y0 h" t" F+ uwhile[ i < people]
" c+ q/ k) Z! \# o! o1 A[
+ c* p  [% z2 V2 j, K* o9 vif( length (item i
2 O8 g/ [8 R" _; U. o& s[trade-record-all] of customer) > 3 )

, m- ~: f/ q: \( d: d5 j2 s. h[8 ]1 b# ?: U  X
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 W4 J% x9 @; Q9 [6 N: B
]
4 v5 o* }# s" ~- m]
/ ?$ w, i# H$ s+ H1 ?, X9 f* @5 {let j 0( [1 W7 g% u' Z* Q2 W# N1 x0 d
let note 0
" \8 V4 n: p4 L# iwhile[ j < people]
7 d% \' N3 p& u[
. G0 m: G4 e+ G3 s! bif( length (item i
: O6 l) J$ m; Z  B' a# a[trade-record-all] of customer) > 3 )

3 O$ L, w0 ]- v[( v6 a* o5 f, D& t# ~
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- F, z5 F3 i( N: @* |- d5 n[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; z5 r; K2 t/ f7 l& n[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: v. o4 _: w. u5 L
]* O. g5 Z  i; R1 y
]
6 ^) c% l6 j4 v, L2 C' dset global-proportion note
! E+ J6 u  w! g, t! y]
. {7 r& U. d) d! dend
% x9 C5 m: F+ S0 F% h- A5 a7 C: h$ I0 z6 `
to do-trade
7 n6 d* i" F( C1 |/ M4 N& c) V; f;;
这个过程实际上是给双方作出评价的过程# D7 n. z# _# h9 Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) d4 ^" Y3 s' r* ?5 I. K3 o6 v; M/ s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 S- T/ G/ i$ ]" P3 E# Xset trade-record-current lput(timer) trade-record-current5 G" R; L# A. I" r- u0 i9 E
;;
评价时间
  i$ W) v9 z2 z0 d; b) Cask myself [
' A* w7 `( A, D! ~update-local-reputation7 m2 T! s4 k  f5 l# x2 _$ g
set trade-record-current lput([local-reputation] of myself) trade-record-current& e1 k: J9 h8 d. Q8 X/ \+ a% g
]
; }! k( Q1 c; q& P0 O4 zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; W2 x! `4 k" ^* Y  Y1 @: }$ |;;
将此次交易的记录加入到trade-record-one. x+ S5 c2 [, Q1 ?8 X, a* b- J9 H0 B+ e/ g
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 F2 k( O& T! p, s' S' ?% P
let note (item 2 trade-record-current )
& p! e4 f0 b/ P1 p6 f) ?! k! Nset trade-record-current
5 [! u, Y. }$ y$ a(replace-item 2 trade-record-current (item 3 trade-record-current))

  a( H4 W: Y6 B8 g+ A! eset trade-record-current
3 o' m4 h1 t+ q: Y; U' P(replace-item 3 trade-record-current note)
' `0 E1 X" r6 \: D. ]% {) t
* h& O; J  k6 i2 h/ y; d* {

. K7 f$ O3 Y" X3 @* T/ sask customer [
. t+ N6 Z* Q5 w: V- \" Nupdate-local-reputation
: w" `" [4 c. ?2 A* d* j0 y$ F4 Tset trade-record-current
" |9 d! J/ @4 z  l" g(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 Z$ M9 i; i% ^/ g" ~" k# e+ ^
]- b1 Y) I* H3 S2 ?
( T1 t. K, @$ [" u& I1 j3 r; U5 r

6 n& I! P  f. |$ X3 J! {set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  ~) D# q1 }; k: a

, L+ B3 e1 o" @. |( Y/ zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 J% p4 n+ B" X1 }8 c;;
将此次交易的记录加入到customertrade-record-all
3 `  i, g& |) K1 p/ I: v, Fend
# F8 j* I0 x' X4 L* O% c3 Y$ S6 P5 K) ?/ h& ^' L1 F
to update-local-reputation
" Q+ [- Y# X- a8 uset [trade-record-one-len] of myself length [trade-record-one] of myself
7 o" Y  T; e3 Y' L! t2 G% w, `1 ^
$ Z* ^* d% k( b. e! i! X( P4 c- y1 h9 N1 N
;;if [trade-record-one-len] of myself > 3

4 D/ Y" D9 K" @" o, Y$ }- n" uupdate-neighbor-total
, F- Q5 [) w# N;;
更新邻居节点的数目,在此进行2 M: m' V6 N  O" `4 ?4 C( I
let i 3
8 s) y- q. \% |9 Clet sum-time 0+ |7 C+ w9 M( l+ E
while[i < [trade-record-one-len] of myself]
1 U' K( t& E! M[
( q' @" {3 R  `" X& eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; p) f/ N) G& P/ J  R5 Oset i" \) a8 O0 g4 P- a
( i + 1)

. w& P: g* r: I! E2 {( i* ?, \]
1 O2 H) i3 I1 {0 x/ r3 j4 ^7 @let j 3
# ^  O, S2 a5 g* o/ q, n3 v; ilet sum-money 0
. [8 W2 R7 l0 s# D, j& cwhile[j < [trade-record-one-len] of myself]
- p& F7 Y, }  Z+ Q$ ~[5 z' l  r8 k0 @, `" Z% V
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)
) t7 y2 j' u/ }+ F1 Lset j8 a3 ~/ H: B/ R) I
( j + 1)

1 b( h3 C  ^* E" y/ }/ @]! Q# @: `4 J" ^' v- S, J& V+ ~: r
let k 3
' @' v: i, z+ J4 b1 E# ]let power 0
! I  C% w9 d) L0 slet local 0
, F9 @2 d% _) wwhile [k <[trade-record-one-len] of myself]0 k( t, c# r3 Z+ C
[7 n$ a7 M3 }7 [: ]( y8 q
set 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) , e$ a. z% _% ~( u5 }" u
set k (k + 1)5 M9 r& l) W9 e' c3 k. l) C9 r
]
' `, ?/ N7 w6 K9 m4 G9 j3 zset [local-reputation] of myself (local)
! G; `9 q3 Z+ {3 W/ \+ }- iend
2 ~7 d9 n- _. S3 }8 n5 D. ~1 A3 L3 o5 Z4 Q) M7 i2 A2 N
to update-neighbor-total$ e. H# J1 I# D& X& H
6 B! s5 b0 i8 p0 f$ O& ]1 t& \
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 n1 K* \0 _4 t( s/ q# \8 ?* a' f5 [( u5 J2 L

, q$ P! S9 r, y9 |9 `end/ x, ~- _: f9 P7 T! Y- v% P
! G) @$ o' O5 y/ W2 s
to update-credibility-ijl 5 H4 H4 Y- ?  \, a: d9 U

+ I+ t/ k8 j# z# C4 w7 {;;
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。, m& G' E- `% i( f
let l 04 R3 o9 J- E6 k0 ?7 b* x
while[ l < people ]
5 C6 j" X" z$ O" y;;
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
4 b" c( t& `7 Q. [$ R[
% ]& p" P2 n. N  y  b: |/ E* Xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; r/ @5 `. S% @4 P2 Yif (trade-record-one-j-l-len > 3)# i3 v/ @  x9 U+ {2 ^1 x" z, R
[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
  \# Z5 e4 y3 Jlet i 3. ?. K5 e0 T! ~; L8 `+ r
let sum-time 0
8 b/ G& ]: P+ |& V1 A4 t7 Zwhile[i < trade-record-one-len]' W' c: x' Z2 x7 p
[, \! W- ]" [4 r1 q6 B
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& U) S7 O0 k+ l, v) ~" i/ c! \set i
& M+ t0 g! m% n$ Q3 p7 S. R( i + 1)

5 k, N8 E# k4 j+ `. A, O]
0 D7 q* j5 J& Olet credibility-i-j-l 08 Y: C+ A9 u" F( ?% I/ D& T& C
;;i
评价(jjl的评价)
$ p# p3 v$ z( y+ k$ G! F; }let j 3# I, N* J5 G8 j5 L* F* a/ ~
let k 4
* _( l0 I) S2 y7 S- A+ Xwhile[j < trade-record-one-len]9 O2 M$ w) L; B* z( s
[  v3 {2 [$ z5 C7 h6 D4 ?: K4 s$ z
while [((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5 ~: p% v  M" h) q7 y
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)( G" N( U9 \8 F' t% T& X4 _
set j
. F5 c8 N9 U2 f1 |; u( j + 1)
' T* e2 n3 r& c6 C
]
3 A' e  l9 M2 q# \2 y+ Mset [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 ))
. T* L( R4 U# Q& ?$ Y$ G" b4 X; o" ^" I' @$ G

& d, U  @' {. V1 W" j9 J- h8 ?1 glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ S' @# F# G7 F. F: m4 t1 J, g$ ^% O
;;
及时更新il的评价质量的评价
5 d8 ?8 Q( g8 lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: j: \. l& ]. c- k/ l2 I. R
set l (l + 1)  w( n* w( A! Q! D$ g6 a
]
9 t# p- W4 C+ }- d, {7 Mend+ f2 j% Q( W# U- X- }1 w, G' V- o
) Y4 Y: |* ?% Z+ p4 g, ~
to update-credibility-list
* ]9 i, X! f5 k+ \let i 0# D8 U1 o0 s9 \2 ]" l, W
while[i < people]
0 [- W' e% g8 L% K! S& p+ e# k" ~[. @7 {" i5 u* l* n' g
let j 01 s2 o* ~- F2 d
let note 0
& X. `( d/ c& {5 D- t+ H8 ^let k 01 {6 B$ H3 w( s- m  L1 O9 E; M
;;
计作出过评价的邻居节点的数目
" G2 ?" n6 Q; v# f$ o8 h- f* Iwhile[j < people]( B7 S3 `+ N! ^$ {
[7 F2 ~; x) d* D' v! i( @6 h( y
if (item j( [credibility] of turtle (i + 1)) != -1)
- }6 q) N+ b; E0 A. E) t# E;;
判断是否给本turtle的评价质量做出过评价的节点9 N2 M9 O- \, P* V) l
[set note (note + item j ([credibility]of turtle (i + 1)))
3 J3 R  @% I5 t8 k+ {;;*(exp (-(people - 2)))/(people - 2))]

9 \3 V  ?2 D+ |# d) Pset k (k + 1)
5 ~; m9 O& e% b) P* z]
$ c4 S5 F5 S: v2 Cset j (j + 1)% D! f! W3 o$ J, p- |
]+ R# H8 g: M  B
set note (note *(exp (- (1 / k)))/ k)
5 j" u0 k/ [' m. [3 |3 w# X/ O% yset credibility-list (replace-item i credibility-list note)
# G3 k- m2 i1 m  D2 k5 Dset i (i + 1)
% l, L5 U: r# E) D: k/ `! ~7 j7 {], X) e. B: s7 t$ Z9 a& H
end
9 J* }' k* h3 p: ~5 b) W
$ c# T/ r# y* w$ ]- qto update-global-reputation-list
2 Y5 Q# N' J/ F. c! q1 p: ]' Alet j 0; g/ I% H) D# U4 ?
while[j < people]
9 ~& L, f) s& u' j1 b[
" J# E' |9 V; p- p, f8 K; Glet new 0
+ {& v8 j' \3 q/ G! B;;
暂存新的一个全局声誉
2 d) [7 e- L/ }, \let i 0  h( ]  ~# |7 K
let sum-money 0
- t: I) \9 c3 r& l3 u% Vlet credibility-money 0
4 @. w# j8 A$ u! R# M5 K+ zwhile [i < people]
! v& w# y+ `/ ^  S& ~[! ~' H2 @; A3 e8 x3 U' }) m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 k+ Q; U. S' G3 i7 P3 J' @set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' B  |9 }+ k/ ]# u, |& B" l
set i (i + 1)
3 \7 y$ t4 X) H2 e7 d]
3 ?, v) I# |' a' P" s" j3 B1 ]2 \let k 0" ]: G; X1 G+ t! Z8 U3 }
let new1 0
! F  @9 |  M$ E6 ^7 k: k* fwhile [k < people]/ l7 a3 E' R& M4 d2 l
[& A" k1 ^( k' ^* |
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)
* b) e% ]5 @% c+ j% ]set k (k + 1)
/ z( A3 a" Y2 l6 @+ N/ T]6 L, i; f) A! V) X% Y* V5 z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; W8 z8 S, P. V8 V3 F8 G
set global-reputation-list (replace-item j global-reputation-list new)$ Z; h/ ~! c2 C; X0 S# d4 y% J
set j (j + 1)
  `! G. a3 ?' `8 |]2 D0 r2 V& ?. t+ F& @1 s/ o
end9 {5 A5 D9 ~; W
! L% b4 o( V$ ?  g
1 j2 `% I/ S0 d" L4 N7 c% N4 c
- T5 q# v$ K9 o# L
to get-color: Y: @2 ?+ `% @
6 W$ `& S! _: d% j
set color blue

, X8 D; o8 h% r+ o$ f. Eend
" h3 L( r* f1 r. O, O# J9 G4 s# _( p4 s$ K# F
to poll-class* t( U7 c7 k3 S
end
2 p4 d& F8 }: P7 x( j, b2 o# K2 }% s( o) o3 v$ L0 E- X3 Z" \, ]) Q0 V
to setup-plot1: B* D! u" z5 q) W  D
1 p. q7 e- R: \1 X% p
set-current-plot "Trends-of-Local-reputation"
# j! {! j, Q6 J
% P. B' V) O) A$ k( S# s. `/ h9 S
set-plot-x-range 0 xmax
& y' ?. i7 o- O

( ~) x. n, E- v( d5 Uset-plot-y-range 0.0 ymax

/ F# S7 p/ m8 e4 f8 h1 D8 D8 q! m8 Send# K, U" \! b+ A% _: F" I
' E2 q5 o& E, j+ o- T; h
to setup-plot2! F! e/ {3 B  f) |8 b' Z8 Q

# f, C+ j) p/ S; H# O$ Z$ Iset-current-plot "Trends-of-global-reputation"
5 Q2 T( ?' Y  C0 }" ^6 t7 A2 y  l

+ D5 j) P: {! Y, Pset-plot-x-range 0 xmax

$ R# L* A% L8 B9 L& H* ^" h  g# |- r+ i, M  x
set-plot-y-range 0.0 ymax
) V2 R: y" K5 B" U! G+ A5 Z
end4 j' r- A- a3 u) ~
' D8 |$ F0 k6 J
to setup-plot3! t7 i! R1 K* Z

' h! J  ?) g, pset-current-plot "Trends-of-credibility"

+ j" X- ~& b; g4 w9 K/ o+ v6 w0 P: i, g1 }% S
set-plot-x-range 0 xmax
3 W# ]3 w, O% y* w5 w: R3 c

' a4 m( Y  N2 {set-plot-y-range 0.0 ymax
. V3 f7 l+ M) i
end
! c, p( I! @4 w4 X# N: ]7 K3 c$ g: Y9 n# Q: Y
to do-plots
+ {; j! |; f4 S2 G' ?( P9 Uset-current-plot "Trends-of-Local-reputation"+ a' n0 E! X1 U" q( n) R: Z
set-current-plot-pen "Honest service"$ H5 X  j. W% h8 }, v. ^" A9 Q
end
% a5 u6 a3 C0 Z: J& e" \$ G/ K! y. l0 ]* Y
* k/ x9 ^; a! d1 |[ 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.
7 H( P: A. Y9 m( \4 K
9 _1 g2 e& @9 ?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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