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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:
- r0 c3 g* D: ~9 t. Uto do-business ; E5 `/ g/ M' y" t. c3 ^+ x
rt random 360
& D7 u5 _' g" u  N% ~3 @9 G fd 1
. `3 O+ e( A0 p, } ifelse(other turtles-here != nobody)[3 u" D8 }" p& F; R# D) p
   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., r$ ^7 I3 j! R7 R: k
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 d" L  Q3 y. k$ e2 W   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 j/ Z8 @- H: D) b/ @- D( G. D
   set [trade-record-one-len] of self length [trade-record-one] of self3 r9 M9 \) O$ y3 Q
   set trade-record-current( list (timer) (random money-upper-limit))
  l4 k) i/ N. u! ?+ T& P( T; G% n1 b, w) u6 x* w" d2 m
问题的提示如下:
3 F- M& {5 z) B" E! u1 s% i% R& Z! x: F0 T
error while turtle 50 running OF in procedure DO-BUSINESS, _: i5 I& r7 @, F' g
  called by procedure GO
9 o8 S8 M& t; K6 w- i$ i; h3 K7 mOF expected input to be a turtle agentset or turtle but got NOBODY instead.' U  D( t2 a- K3 {4 h/ u7 ]
(halted running of go)
1 K! ~5 q0 E7 w$ Q6 N& _/ m0 \$ W& E/ h
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~~( e; l5 P/ `/ m$ a4 Z
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0 o: V/ G9 _# \) V& f$ q' `/ v
globals[3 _. t: F& }+ a; V% }. H, \
xmax
( R5 d* ?9 C, t/ O9 I# ]1 Yymax9 N8 i4 s/ x8 M; H: A0 ?6 X
global-reputation-list
5 [2 d9 j, N! N* Y2 \2 Z. G! Y+ I# I1 H1 a
;;
每一个turtle的全局声誉都存在此LIST
; N" A* k6 I% M+ h! }% g' fcredibility-list
  ]/ F/ @) j0 h! D. F" F- _;;
每一个turtle的评价可信度
# `8 k) M+ W( T4 w% V) L% hhonest-service3 v" h, I0 Y5 R9 @: Q# V+ Y
unhonest-service/ m  c& _: M' @+ Z. Q& _
oscillation0 G! o; {/ E3 k! ~
rand-dynamic
! Z* O  D4 U, C7 c- ?! w- f]2 S1 @$ i4 S5 o
# u& {! L9 _3 I1 X0 _4 C, V
turtles-own[+ I, S  e3 P1 J( x( ^+ {5 ?& D0 ^
trade-record-all7 D5 H, @; |. `, V5 O1 l7 P' e* }
;;a list of lists,
trade-record-one组成8 I. p6 W6 H0 o; R/ o
trade-record-one1 x# T+ G* D. z. }% B7 u& N& ^1 E
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ j# X7 _. V+ e" [
, `4 p- A2 K/ A9 L& L0 {;;[
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]]
, n  |5 |( U9 C  j; p9 Mtrade-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]
" d. a; s1 ~) t+ o! u9 j1 E, U' vcredibility-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
+ l( ^7 z) g/ E) ^. q8 t9 i/ ineighbor-total/ _& u% O4 l  y# _7 o. M. c5 \' H
;;
记录该turtle的邻居节点的数目0 l3 E" e- W* {$ k& F
trade-time
" R0 K, A% `# V;;
当前发生交易的turtle的交易时间
  ]( L; l. G2 z5 Z. P8 @: gappraise-give
  @6 r2 K6 r# e;;
当前发生交易时给出的评价  ?6 ^  B" M$ ~+ ^
appraise-receive. R2 Z& {# @: Y7 M" G6 Z; s7 J8 D
;;
当前发生交易时收到的评价
# ^: R' ~. p, E& [4 r8 kappraise-time
! L: v3 C( r: m. }/ _4 K4 h0 G;;
当前发生交易时的评价时间
# M; [4 H" J% olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉& B$ W1 k' Q2 M; _
trade-times-total) u( W' z) _* G4 f
;;
与当前turtle的交易总次数
: M" d, j' g# B: L' }  b& ~" Xtrade-money-total
' A4 Z6 |* P. g, I;;
与当前turtle的交易总金额
- L8 O  g% d. slocal-reputation
% c5 Q; C+ x+ M6 |3 U7 Oglobal-reputation4 N7 N. f8 p% C) H" a% v
credibility
8 p& q, M' V5 i/ r4 M;;
评价可信度,每次交易后都需要更新
2 ?* I+ ]7 S2 S5 g# j, V) z- h) Mcredibility-all% C; D7 a" r8 I
;;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
  `- C9 _( E8 L) Q: ], ~" [7 ^0 S, w& k
;;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
9 G/ J) g; @2 F' e# [4 o2 Ecredibility-one
/ D! h) t+ O" F0 @! q;;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 S! G: }5 U4 f, {, M* k
global-proportion2 v( N0 Z% F& @
customer, }5 n, L. h' W1 b8 S' |
customer-no' x9 D* M/ h# w& A  R0 L
trust-ok
' D# j8 R& X' r, X9 Ptrade-record-one-len;;trade-record-one的长度2 r9 m4 H& B0 f/ V4 u' N: Y$ }
]0 t; s5 E0 L, K3 m' Q$ z

1 h1 J6 U' F3 ~% f* q7 X$ \;;setup procedure
. A$ y2 w7 D# o7 F$ A5 U% N. o# M! a8 f% z! O+ ?$ x, _" U
to setup" j& z. X/ S# S
5 n1 m+ b4 Q- L
ca
, d5 ^; m0 l1 T" G/ @0 n1 e8 B$ y

, u  B, D/ B3 y: g: Rinitialize-settings

- Y3 F  v* K7 ^" O  K' x7 D+ b4 L$ i0 {( l6 Q7 q
crt people [setup-turtles]
6 E% v& Z% e5 Q5 _* W: m
2 M* _8 u% i6 P/ }7 }* Q- F2 E
reset-timer

9 Z0 D/ C. Q7 q8 T# F9 A; r  Q6 d+ g7 @, z* L
poll-class

/ N5 m- t+ t' m+ h8 ?: m0 Z! o7 U' x/ c2 x: a$ o. g" L
setup-plots

/ u9 x% H9 r7 p( k
9 C% G  u7 ~: d5 O* kdo-plots
) G* i0 `: }2 D6 p3 y
end
% G; R9 E2 V+ C8 m' d8 i2 c& o# O4 _. ~# v9 p2 m( }! s8 [% [+ A6 z2 B
to initialize-settings
7 }0 o$ O: b' K3 H0 _0 G+ \; o' x' v* f: V' X; x7 K* ?( f
set global-reputation-list []

( U' m4 U& ?2 D8 a. v4 Q+ L6 Y' M# C4 u. x3 _  Z4 k& r8 Z
set credibility-list n-values people [0.5]
; h% k8 p; S1 p. K7 u! p
5 z/ f9 \0 U0 D; B. ?& v; x
set honest-service 0
0 x1 R' C1 i' R. \5 e
8 a3 p& p2 s, \8 G$ r* c  ^9 l) T7 J
set unhonest-service 0

! R+ N5 }( q: q( b' c3 B( V& ~: M: R3 U; N  r3 P
set oscillation 0

  o% z0 u2 e- l/ Q: D6 K! b, r1 {4 y5 _- x& \0 e
set rand-dynamic 0
1 s0 c; h, w2 i
end
, ^' c) m$ u7 J- O
2 q. X' k0 i# sto setup-turtles
" k, ]( ^5 G  n8 l" @set shape "person"0 O7 {. ^, s" O* h( {# H3 {3 v6 K
setxy random-xcor random-ycor
9 i+ f- }. z- I9 ~set trade-record-one []
( ]3 r. {+ T7 L: [8 v* u3 I
. S" w3 {. [0 o, }4 v' J4 V
set trade-record-all n-values people [(list (? + 1) 0 0)]
" n! Q3 H' v( f5 w& x( o

3 O8 y7 i( ~) V& Gset trade-record-current []
3 P" W- V' G5 e0 U! ~set credibility-receive []- q' `8 p. |: l$ H
set local-reputation 0.5
8 q5 `/ G; N) a& R. K$ \' ]7 @2 Yset neighbor-total 0
! p1 w! l3 G1 jset trade-times-total 0& j9 d1 |, c: [2 z, w3 `
set trade-money-total 0) w5 i! V0 K* a5 H1 f4 P: l
set customer nobody
1 @" x. b  b- M8 k7 ^- jset credibility-all n-values people [creat-credibility]) i- R% N" ?  b6 V, x' X" L
set credibility n-values people [-1]
& @$ Q; Z( o% H- I/ T% m1 \get-color5 @4 D8 E( d1 a

. v/ ^$ Q" d$ W. @# Vend# C! U+ I2 L$ _6 F/ ~
& p$ c! f/ |; d0 \
to-report creat-credibility
! [' E  F0 ?- z4 J& B: vreport n-values people [0.5]
: J5 M  L1 J% v+ T1 b* ?+ lend
& @: |' Q: M0 m* a
: C  d) r3 B) h6 Vto setup-plots
. @2 {5 ~5 H6 [$ R" T# a8 u9 j; p$ q& n
set xmax 30
/ x. x* }0 j) K; O% A% Q) L" A

6 v( ~- J2 |! w) \9 R5 k% w; Gset ymax 1.0
* e; \. a; x! X4 Y# I; p8 S
7 K% F# _: P3 |) G# @  V1 s
clear-all-plots

$ M$ [, h. F( p3 i: L
( n6 j2 m, U8 K8 t$ w( ksetup-plot1

' S/ Q! D" F! w3 _9 H. i* D+ v; M: a$ s# ]; Z
setup-plot2

+ g: z8 l+ i' S' z+ _3 w8 M( ]" N" X! |
setup-plot3
2 v  q3 x+ N" `7 W' k3 l) p
end% k2 V7 [1 B0 `6 w" B; i; A

# K! X# U, M+ F. U. G;;run time procedures
' s1 M  z$ _* z4 H6 z3 A" x
! l5 @: d/ O$ B# ~  jto go
6 M/ L1 ]* f8 `+ Q# q2 [0 F7 r1 N! r/ n2 R' B& {
ask turtles [do-business]
; T; ^; ^' r- w- j7 E! r
end
- |3 K1 r" e: L; t6 h, a: U" K! O, h/ Y8 m3 {# c
to do-business ) m% L/ j# w$ ~! E( r
  d/ @  {0 Z; p( H
, J8 L' c# L& \& \! ^
rt random 360
6 i+ I' k' D- V5 }8 L  W# p3 P+ N

) `+ F: }, q+ B" Pfd 1

) A( Y* G) o9 s9 ?9 _8 S: _( F0 p1 @3 A) I8 ]! P+ ]/ e6 K
ifelse(other turtles-here != nobody)[
' [2 {# L8 @- A! m

9 a6 K* p1 h( {8 j2 lset customer one-of other turtles-here

# l9 N; Q9 Z+ X& P5 k
0 y# Q- x- |6 H( g8 Q$ J;; set [customer] of customer myself

) @! [( V- R' s  u& y5 r! y: B# ?" w2 X$ K6 z
set [trade-record-one] of self item (([who] of customer) - 1); x8 f0 I; O3 V" Z2 }8 J
[trade-record-all]of self. J# f: X- |" f% o, c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& g) T- u! }+ }5 N( `

& h  \6 H9 T8 A- J$ V9 U  Dset [trade-record-one] of customer item (([who] of self) - 1)
* c% n* t  ~: [[trade-record-all]of customer

9 Y  W7 O' j  I6 C' x2 V1 D" O7 Q! B- r( p& P; r; T
set [trade-record-one-len] of self length [trade-record-one] of self
/ I/ e* p7 Q3 Y  D! ]
8 n. m9 x* T; W- Y3 P" u2 ?2 U
set trade-record-current( list (timer) (random money-upper-limit))

3 k& z- ?( x. r; P- s2 I
* m& P; ^7 T) |) yask self [do-trust]( q. H4 c9 H; H" l4 W, M/ m
;;
先求ij的信任度1 p* Z- K$ [4 x2 N* L6 W

1 l5 b- _; v. h8 e3 ^( u9 R( u! \7 K& Lif ([trust-ok] of self)( v! a# `# N# l: h9 u, Y6 ^7 y& e
;;
根据ij的信任度来决定是否与j进行交易[$ ?, d5 h6 w$ I& x+ ?
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 T! B1 e. @; H- F0 X7 R: H

4 U! @. l  j- d$ H0 b/ v. e[

3 a" J1 s; f9 s0 z
( B  O7 l2 \  t' Sdo-trade

* W2 Z/ f) G6 Q8 S3 X, p; g8 T$ _; K7 u$ F! Y" t1 ^( ^! D
update-credibility-ijl

9 E/ x' g; x0 z* I
, P  j3 T& n! m/ v" {update-credibility-list: k7 b% \2 ~, E# l  p
5 S- b) S  h& O3 K" N. t9 j
: D- f  Z$ f! _* `; o2 W
update-global-reputation-list

( I6 H2 s& m8 i/ Q; w; L5 g/ ]3 a" @5 j+ ?5 n# G9 F
poll-class

5 m$ O+ `- Q/ d) b' F+ X
+ E5 }) m6 O- a% M- Aget-color
+ `5 m7 r# g# ^. `

$ k2 M  v& r1 K; v. W# j]]# I. R7 z6 l" f# q' b

& U: ^1 C# ~, [;;
如果所得的信任度满足条件,则进行交易- J% S+ M: o7 `5 U7 d

0 j1 c# I/ ]6 z- f& v[
3 ?+ N; a/ J/ m* I7 c

+ H. t6 K4 |3 Crt random 360

3 }) q# U% `, F4 H# _% t+ ?% o. p) R9 O) a) K: e. N! M2 P" ^
fd 1

9 o/ R# P& l; `7 [3 F2 U: f' X1 k0 R. l: N# d  s5 u8 ?
]

1 r& J  O( X5 D" B
& s( B& n. |" L6 m1 E6 ^) A. qend
; R" i2 m6 W- m

: \7 ]- p" H/ j2 h+ o# @to do-trust & f. v  Q1 D% q, @: ?
set trust-ok False; g# m+ Z! }0 I( g5 ~; a
4 f5 X4 t7 H- n! m
" ~# B( |! e, f0 X
let max-trade-times 0
+ F3 W) R7 ~8 ^" f) [0 N/ pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; p7 D9 v7 `% R* w, K/ n: F  e# Vlet max-trade-money 0  }1 a9 T+ g4 d$ ?8 o/ W: v# @
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- {2 `$ q" n4 r8 llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- \: Z6 x) M% g- ]) u$ Q0 A
: I" N5 _  Y4 W* W, j" t, e" i3 R

, l1 E, b: B5 q1 w  a8 aget-global-proportion
3 L/ h! e1 G/ x# _. Ulet trust-value: e, B+ I4 V8 J3 m
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)
- m  Y% K& t. n! v' c' Z3 [
if(trust-value > trade-trust-value)& Q: C4 Z, m7 h/ u" J5 U
[set trust-ok true]
. S! _  S; c2 r/ r2 kend
9 P' z7 a9 C! C5 d& H0 r' b0 Y+ t) F
to get-global-proportion* i+ O$ M& x1 x& E& t" C
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 R  S' p$ z& ?[set global-proportion 0]
; L% T  m9 U' N[let i 0
2 Y" \8 S) a5 o% ^let sum-money 05 {+ R8 }& r' q
while[ i < people]& U& o  B* k9 ]2 M4 G
[" R9 f8 G0 X# c
if( length (item i
' ]- y8 K% v8 y! I! p9 h; Q: W[trade-record-all] of customer) > 3 )
- X) p! }6 k1 E# M5 c, s
[
' v$ U" j0 \, d! D. Mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 h0 }$ }; S2 Q: E4 U% U
]% R' ~: ?) O5 D3 y% m) t  m
]% [. C* g. f& Z
let j 0
: V. W/ v  A4 M' X5 ^: e' Z+ X8 nlet note 0
& V% @4 e  B) P( |) d7 J( }while[ j < people]
5 q0 K8 i2 a$ d[
+ ?( c) c, b3 R% J8 r6 iif( length (item i+ l: y6 L- x0 u/ Y  D
[trade-record-all] of customer) > 3 )
1 A  h9 w& v9 }" l
[
/ {$ H# Y' j$ P9 _) Z6 z7 Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& n" {- J+ D/ l* i6 p
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% K8 u$ a: Z& ?. F& ^
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( [7 O* C0 c. K. t]
0 _8 l& N; U7 ]' W1 u+ L2 \]8 @; Z4 L  O& Q' B  E0 z
set global-proportion note
) C9 _% z2 p& _5 }# `]6 N# q! `% K; }1 E/ _/ N& Q5 R
end- A4 j2 W) L4 p

4 |& k4 _  R) [  z/ Fto do-trade1 O) f3 U4 |' S' n- f* y6 F  l
;;
这个过程实际上是给双方作出评价的过程
# C2 Q- x9 Q$ q" _' }7 q. A. H; vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. C8 R5 Y. j. L, Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 E9 e4 {1 H4 `" j" l% N  _( H2 Oset trade-record-current lput(timer) trade-record-current  d- u  F4 h. h  |) a
;;
评价时间  G# ?1 P0 w: g6 c+ l
ask myself [
2 e. ~* [: B8 d: q, p% pupdate-local-reputation3 |; }; n& F8 `
set trade-record-current lput([local-reputation] of myself) trade-record-current
. k* o' X" r% @/ z& i( s]
* m% a% |5 d. L6 x0 }9 n' dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 _. N6 Q/ n% k3 T2 X% g& X
;;
将此次交易的记录加入到trade-record-one
8 u0 N- B0 N% f* n! jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 g/ I( I. E' i/ f6 g! Jlet note (item 2 trade-record-current )6 g$ z( {- z1 R# U+ a. K
set trade-record-current
; p) }7 G/ N# I# J+ d(replace-item 2 trade-record-current (item 3 trade-record-current))

: ]; R* w. V+ Z' y' m" zset trade-record-current
4 }, ~/ E; V4 E( E# H  g9 m1 S" u(replace-item 3 trade-record-current note)
( f6 t. ?. r- @) ^. o
" Y9 N0 ^: T/ Q7 I8 q

5 X5 ^: H% s# h% yask customer [
! o5 Y( K. n1 lupdate-local-reputation
9 `1 k3 W" B; `& k$ r+ Cset trade-record-current
: }0 r) Q/ F2 N7 Y9 s( J' r; _(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 f9 e2 m' `8 x6 I1 B6 A, [1 K
]
  p, n, ^: o( R# d( E/ p5 ?) \0 x" |, X, b6 O) D& I) }
9 G. v9 K4 f% e/ R
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 J) Q& s; b! L! @' S

) r4 @' g# Q) ?( `- K, jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# g: m7 |' G! y2 w$ ?. B" v1 [
;;
将此次交易的记录加入到customertrade-record-all2 C; G/ w" ^9 ]! _: A! F0 G" s
end% b) W1 e# t/ b+ k7 Q% h, `

8 `' _6 u1 b. t4 _" Ito update-local-reputation
; V" f" m8 a* h1 Jset [trade-record-one-len] of myself length [trade-record-one] of myself
0 l0 k9 M3 `0 \; f+ k6 ^6 }2 C, B6 V! E/ D

- C* ]( B1 W4 I+ c$ G1 U( f;;if [trade-record-one-len] of myself > 3
0 j: P6 Q; o' B) u
update-neighbor-total
$ a( T! q; T! M8 d# z8 i$ `;;
更新邻居节点的数目,在此进行, [! ^; i7 W& {+ S1 e/ a
let i 3% e8 ~1 I" t: T! R# O; l" Q
let sum-time 0/ ?7 ?) K. @4 |  s/ F2 @3 y3 `
while[i < [trade-record-one-len] of myself]
" {& {2 \! t9 u" c[
" }0 {6 F- R2 E5 ~( k3 Xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); @6 [# [; g8 a2 j2 m
set i
- u! i$ |2 E0 j" T. a& Z" S( i + 1)
, d* l1 \; Y  S+ o! p1 B, B. h3 G
]7 \' {+ i0 {- |) j' n
let j 3( _+ M- S+ a  N$ p2 `8 ?. h. F
let sum-money 0
% p4 ?& G$ Y  o+ E3 b% pwhile[j < [trade-record-one-len] of myself]
' W4 Q" o6 U, W6 x0 G[
( e4 R5 `+ J$ z( ~1 c0 F9 Hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
7 z5 [4 B' Z0 m- X  dset j% p& u& U. @1 O
( j + 1)

! G1 o% T. I9 Y0 P* K  V7 e]% H' ]' ?* v* ~* L# _  o: y
let k 3. U2 h! A% ~' d! ~; ^
let power 0$ d" E3 t; z  r1 e( E+ Q  M- R
let local 0" K( |  m9 X3 @1 d/ g$ J$ {) O
while [k <[trade-record-one-len] of myself]
) K$ J1 G# j. C) S[8 S1 f) o# b3 |7 e; f; f% y& M
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)
; b4 R+ x* u4 ~8 f" A3 xset k (k + 1)/ i1 O- l/ v% y1 p
]
' ]& e( `4 {) {& Q) Z; Hset [local-reputation] of myself (local)
. g8 j2 t* b+ P& Cend* P3 y  S' ?8 ~3 f
- F  ?% q1 @1 [2 C7 d
to update-neighbor-total
) ^3 E7 {# w. D' C* O/ A! [
1 v# k! n4 k/ Jif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 g; |4 r6 f' y" S" Z# O6 `% h
8 E: T3 L$ N  x  ^0 i

; a) ^# H6 ]* K- S% A( send: P9 S+ u8 V4 p7 u" l6 Y7 T* S7 ?; L

; h* q& u* j8 U1 }  W8 bto update-credibility-ijl
7 C1 y; P# S1 d8 `% C6 d4 l3 s
7 q. s0 n- @0 a6 K0 J6 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。" g$ w2 m3 V/ g8 L
let l 07 u+ B" ^+ ^* z
while[ l < people ]
3 B2 i( J) A: Q$ T0 y" v;;
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8 h. A2 @( Z; U, e' _
[0 y; O* Y6 N6 i8 z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 S9 ~5 G  v4 c% ~& q# ?4 sif (trade-record-one-j-l-len > 3)5 n$ l3 o4 N7 q% l
[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
2 L' J0 r: ?" i' l) {+ ~/ vlet i 3
' P# }7 L* o3 I! {7 A) Qlet sum-time 0
2 Y# ~; f+ h3 Kwhile[i < trade-record-one-len]
) w2 K5 l! ?1 ~! v7 u[
0 X) H/ D* h4 a! t4 e+ }set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 A: ^% `& F6 g! T% i% i" Jset i
( X8 C8 ]& C! C* Q9 f( i + 1)

+ {" ]( E: R8 M3 g# F]( c$ L# L1 O( I% n0 i
let credibility-i-j-l 0
  D7 ?+ q6 F% c% d8 [;;i
评价(jjl的评价): u3 }4 u) g  W4 `1 f
let j 3
: v) @5 q" |0 K7 v3 Blet k 4
" _/ q# Z+ A# @7 z8 ]while[j < trade-record-one-len]
7 U( f( q8 ~6 t& z: L7 |9 l) F. V[
" b/ k& X9 f5 y" x" mwhile [((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2 N6 Q+ w, h5 |7 u  p
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)
2 t; S, ?7 k! ]set j
, k! d0 f+ r2 A4 h# G" S  s( j + 1)

: E+ e% y2 t- q5 R" i) g3 i]2 C% \: t, C5 H
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 ))
, r6 j$ ?* w/ ~! H7 Z' p. J+ f
/ R* O1 Z/ I. B3 K+ J- Z
2 u0 {% J5 A- u  A- z  W
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 k- `  ?; [7 j* O3 a* t; {9 F6 s;;
及时更新il的评价质量的评价
# Y! S" X7 d1 Gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  k& B2 D  G' Q  r0 O3 D' E; @
set l (l + 1)
1 x: A, i! n6 r2 ~]. U. D* W! c% e8 z; `4 V- w
end
  v* k9 C" B3 g/ z- j; f$ s) g9 Y3 {: [
to update-credibility-list2 i4 [! C/ `# J+ T! C/ `7 P
let i 0
1 `4 _/ [, W: S7 L/ Fwhile[i < people]. V" I7 D1 n; t
[! E6 L8 |: z/ T
let j 0
" q5 d6 v  P' M5 R  G: q. q& h' g* `let note 0
, q; s" `5 i9 ~% b0 n0 Alet k 0
9 J# K0 M4 N7 Q5 f7 u;;
计作出过评价的邻居节点的数目* V1 a1 G& r7 h- l+ I5 Q' L, m
while[j < people]
9 C* S& C  m  I5 x3 U. D& h3 S[
& A+ k# U- ~( L# @: nif (item j( [credibility] of turtle (i + 1)) != -1). |6 k2 ?9 }4 Y7 ^6 |; A4 h
;;
判断是否给本turtle的评价质量做出过评价的节点
! h, R) B! a% q0 I7 ^' I0 {[set note (note + item j ([credibility]of turtle (i + 1)))
' Q8 {$ s3 D9 C2 u; K;;*(exp (-(people - 2)))/(people - 2))]

7 q' s5 m! ?  C0 p4 l2 }set k (k + 1)
+ z( m: O2 ?- o0 v]6 C3 b% ?+ O# Q7 g8 l( p( ]5 j  {& b
set j (j + 1)4 U/ t! ~. K* {9 L4 h- r
]  L; _" t! E  C, O
set note (note *(exp (- (1 / k)))/ k)7 J" u6 U, {: A0 O% X( c* J0 Y. a* o
set credibility-list (replace-item i credibility-list note)
$ K/ d$ B5 e' Y7 J. G. pset i (i + 1)
) h) K" o% ~/ `% P% R* m3 ^, i]! {, x" l2 C# |$ k9 i: p) E* z
end
9 o3 P& |/ ^2 o) B/ [2 T* ~5 j8 K9 K9 K. T. A5 Q2 U
to update-global-reputation-list. C# k6 _, ]1 F& d6 m% E  t
let j 04 [2 b& P' d+ G6 P: q! m3 I1 g
while[j < people]) X# r2 n# b- h" P; w
[
' t2 z4 Z: m. I7 vlet new 0
. K  c! a5 J$ I# U& `;;
暂存新的一个全局声誉
. V+ `+ f- z+ T9 a) R0 Q& D* mlet i 00 r9 s9 e, c  r2 F
let sum-money 0* a/ f) d: {$ n& J
let credibility-money 05 b  ~/ K& _2 ~: H0 N# Q, D
while [i < people]0 D9 k( K& X3 b
[
8 C$ f- I  o: k* T! eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  X0 f1 X+ F: k( X2 R. M2 J
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ y- K. O" C6 [* U: ~7 Xset i (i + 1)
2 T  D' D# r7 w0 P, |- O+ T  X. y3 i! v]
3 U2 w1 Y2 z$ X2 f$ Dlet k 02 p6 O+ x; s% t" ]; g3 b9 }, {
let new1 0
# W- U+ [, k. w5 m8 Q8 X2 s( ?while [k < people]
) r' F  k5 f! h) V[! v! a" o- F& {3 e
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)" x- i" |3 d; I) e, [5 [& \
set k (k + 1)
( g8 z) X* d# [2 ]]5 Z1 C% L! R) X& _6 S$ Y, F
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! a* D6 C0 ^6 D
set global-reputation-list (replace-item j global-reputation-list new)
! T' f0 R3 Q$ h, U% H1 |; pset j (j + 1)
9 ~0 U% e; Y* H3 @]
3 A: H% @9 X; A1 _5 w3 h& Pend
; u3 h" K2 N1 |* v; _; u3 ]4 i
$ s7 A: d% D& P: u: a1 Z
7 [% z/ q6 N3 }. ^( t: b  e* v# E  L- ?0 m
to get-color1 V$ ]0 d3 _8 c" C+ I: f2 V/ z

/ m6 ~! C! y* N$ r; Tset color blue

, m4 ]; ?2 J% C/ {0 e  S8 jend
/ E# O+ @  R5 c' E6 [8 d0 C! i0 k
to poll-class1 k- L  ^" W/ l+ P' Q! K
end
) f+ `4 R9 [' `4 I- U
" u; n+ {# _/ Y# P) J2 ^to setup-plot1
: w8 R# _( b" y+ g) A  B2 [, Y6 b7 g
set-current-plot "Trends-of-Local-reputation"

/ c) w# G% |" ~( U4 E3 a. |' D( u& Q! N& X9 c: s$ P7 A% l7 M
set-plot-x-range 0 xmax

% U3 r% }$ b) x( x9 r6 b/ [9 f( n" S8 B/ [
set-plot-y-range 0.0 ymax

$ M+ J5 z" c/ p- n; [7 K; yend& k5 V! Q$ |1 o) F+ ~
6 ?' Q+ P5 g: T/ y
to setup-plot2
- |* Y2 T* P; I" |: Q5 ]' t0 Q2 |0 K: @; |8 v* G% F
set-current-plot "Trends-of-global-reputation"
( l; k# r6 R1 m, N8 f
8 b5 `! {% H7 t: C  S$ |7 e
set-plot-x-range 0 xmax
* N% N2 w+ i4 o1 F

6 ~) m+ k6 \+ Q% T5 _set-plot-y-range 0.0 ymax

! a% E' {5 T3 B& |+ Xend
4 `& N1 x' k. B
7 L" T" g5 O  U( _to setup-plot3
+ l% U; D* E  q0 f$ ]/ L; M8 ]1 f. \0 ]( F4 v5 V8 G1 J' I
set-current-plot "Trends-of-credibility"

: S1 ~, P4 S' m, ~3 m4 b  d$ N, W+ n% Q) {
set-plot-x-range 0 xmax
+ ?/ a- I% [9 S4 i

/ N- i2 ^& g" F" Cset-plot-y-range 0.0 ymax

  o& K" O* k  s8 s/ c" Wend+ V# i9 a) ]+ p. }* l9 x3 b

4 |0 @! u1 f/ A$ eto do-plots0 {/ q$ c/ a+ h6 h& T8 z+ p: v8 `
set-current-plot "Trends-of-Local-reputation"
3 b) o# Z$ Z! @; d- {6 pset-current-plot-pen "Honest service"
, Q' q. i2 {$ d5 G2 G1 d! tend
1 @$ O+ P8 u! ~9 V0 z8 H5 c# r( Q: j. P' i( B6 X4 [
[ 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.: a% ]$ z7 E# }2 |5 k7 \! a

. _1 C/ o% p' D1 M' c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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