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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:/ J: M5 x7 `1 g1 Z! g
to do-business
2 l5 i: o  D( s1 h0 M, ^) k; j rt random 360
  _% k! s* g2 U) `1 o2 } fd 19 a* q( ]& ~/ v  x
ifelse(other turtles-here != nobody)[5 @1 u) w) K/ W  s* w
   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.
( x: x4 ~& {1 }* i" Z$ X   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 E! P! V6 I4 ?% @/ y( r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 T4 X' x8 d, i' ]   set [trade-record-one-len] of self length [trade-record-one] of self! h7 a* p# o/ I
   set trade-record-current( list (timer) (random money-upper-limit))
! G8 M9 o# a% u9 P0 Q) j: u1 C2 P& P' [, B
问题的提示如下:0 X* [7 W, @# g# U
* v& u' V) X" ]; L
error while turtle 50 running OF in procedure DO-BUSINESS
' ~% g6 d7 V; g: n  called by procedure GO& Y; B) F3 G  A" W. ]
OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 n$ A0 t! v6 `, T
(halted running of go)
" K6 @6 @/ a; B
: U+ r( @2 [' t5 R7 z$ U) A+ @& d9 U3 t. ]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~~
, \) c; y1 k! L1 X8 G$ s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* d( V0 s& j' Q4 I  N
globals[
6 o+ X) V7 \; E4 _+ H$ t% Wxmax
3 Q* y, P3 e0 n1 M' s$ O7 Uymax. P4 D! E6 B* I; g! e
global-reputation-list4 s9 z/ ~: `8 E( U0 H6 m/ `$ `) C2 c
+ r# |! `. w- v3 N: G$ x
;;
每一个turtle的全局声誉都存在此LIST
5 E7 c% V- o( f# `4 f/ h4 c' R6 Acredibility-list* `9 Q: Y# ^5 c" E3 s& u) }0 @
;;
每一个turtle的评价可信度; R( D$ j; n5 c5 [6 D: F
honest-service$ \* g" K2 m9 V# d( n, ^
unhonest-service5 T; y* |% ~2 E
oscillation2 P2 i3 `/ e: M, `# @. F
rand-dynamic
- L, n- u7 y0 ]) h- t% w]" N- P) I: X8 R  }8 {! `

/ u" D3 x0 ]' Z1 q4 E/ qturtles-own[
$ d6 w% F! G( z# Rtrade-record-all
& C( u* l5 S* W# u* `1 |  p;;a list of lists,
trade-record-one组成1 H2 c$ X- V% }5 Z
trade-record-one
8 \) g. x/ K3 ]  {;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* A; |; C7 j2 @! R
6 s- s# m# A; M  U( _" b;;[
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]], O  V  Q9 D- I) q( i8 R
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]
, Z* y5 B* J% {% X1 i) x' p: U8 mcredibility-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
/ a' b9 H/ _. |, N. kneighbor-total
& ]9 U$ _3 J5 i0 e;;
记录该turtle的邻居节点的数目( S2 i! z1 {% K
trade-time9 Y* D0 B1 V, Z8 Q& A
;;
当前发生交易的turtle的交易时间
) U- F& ~( @" Z& e% J1 {7 f0 O+ r  C! dappraise-give
' }) @5 q  n. q8 K1 s, X;;
当前发生交易时给出的评价
6 C% Q& {  h. t) u- _  }$ |appraise-receive
8 A# Z4 {7 H) Z1 q8 i$ s;;
当前发生交易时收到的评价
# [4 i) Q) V" ?appraise-time# l/ D6 K# }8 w, d% r) Y. H) ?" R
;;
当前发生交易时的评价时间
9 D( v/ _4 H# [% h  B8 a" r5 Xlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
( A1 Y' r& T9 etrade-times-total" C: E# ?) H# M) v! u9 b5 ]
;;
与当前turtle的交易总次数
% P$ @, z% _6 g) E* D7 u- Htrade-money-total
" j; Y% A! F+ z4 V) |2 R% m+ o;;
与当前turtle的交易总金额
: p9 f  c* M1 i5 f7 hlocal-reputation1 J! \( W/ t0 ?% P% f
global-reputation' Q+ M3 g; E9 |6 W4 @. T: O" H
credibility
9 i5 l9 n, A4 P, l( ^! g7 ^;;
评价可信度,每次交易后都需要更新
, V% j+ Z& s3 {# Vcredibility-all" B+ o+ p9 E9 H; U/ @* K$ ^$ v
;;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* L* S5 e& l5 ~8 m5 }- K+ s
$ u. S. u3 K1 ^% D
;;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* {. S! N: l4 M$ O
credibility-one( K9 D/ N/ b' I& H* W' \* d( }
;;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
) b* X& ^3 b* Qglobal-proportion* v1 U9 ?* {! i
customer) x" \. A/ H/ q8 L. I: P. Z4 K
customer-no
( v2 a9 l. p8 H7 p5 B  P" }trust-ok
, Y0 l: g! @  J3 ~8 Jtrade-record-one-len;;trade-record-one的长度
4 ~* f; Q; Y6 }9 R8 W2 b]
5 f, i" K' Z9 G3 t0 M' }
* r2 V9 i, k+ ?;;setup procedure0 ^; r. o6 Y6 V' Y- y; n2 n
/ q1 h0 x0 {; x% @  K7 K0 \# R) _$ d
to setup
- s% q+ ~- B. q) [" }0 m
9 X0 f7 D0 Y+ \( d2 l+ N) Q+ F3 g  ]ca

+ ~; y) F. s1 D, E; H) d
* ?7 F4 a0 Q! |1 e. s8 Ginitialize-settings
  V' E7 M" ~1 B8 X5 }& c
. U, l7 F$ o) J0 \, y
crt people [setup-turtles]
$ i; o2 r8 E, \- V7 J
# |$ K3 R, E  }! T5 j- n9 l% @
reset-timer

4 p3 h' C) f0 ]# [& H
* N( A& M+ F) C' a& O3 G* }poll-class
0 p+ v1 U3 w; X! o6 N; ]* j8 U. D7 q
/ r1 C. A6 ]3 W1 H
setup-plots

& ~1 p8 b9 F% L. j5 I. d7 ]5 R- M* Y: ^- L9 w# q+ p" ]
do-plots
4 J& {3 P3 j) c! d2 \8 k- @
end: e' w" F. N5 [" h) ?
5 R3 }) Z/ f3 Z. p  M2 Q. o
to initialize-settings7 G/ l& P- m/ S0 v' Z. S0 v

; p- m1 \8 u0 c/ Q* I$ P/ B0 P1 Rset global-reputation-list []
6 ?% Z5 Q$ |& i( H0 C$ C! q$ ?
3 _* T. z% O' q. R2 S) H" ~
set credibility-list n-values people [0.5]

5 N% C9 U  l& c
# z2 @( {2 l  Z9 Tset honest-service 0

7 Y$ n0 `  x; \# X& s4 w5 z9 Y* ^+ f& m: Z' s1 c( y7 @
set unhonest-service 0

$ B0 C$ L: @: r9 S8 c# @5 U- {$ Q6 {4 @" E! {+ j7 Z/ |! n7 r) t
set oscillation 0
: s. i2 g9 O. Z$ o8 O

; o% Y$ Z# X7 s$ Zset rand-dynamic 0
9 G: |) e, d2 s( X* H6 U8 D
end
* l# F6 d- i% E; N$ Y- f, e/ n8 x  G. Z
to setup-turtles . \7 w' V2 ?( U# _) Z
set shape "person"+ q4 ^' c4 B6 [
setxy random-xcor random-ycor
  @$ v$ U' U# ?set trade-record-one []
( W4 h! p# J2 t6 C
+ D; q- k0 l0 F4 x
set trade-record-all n-values people [(list (? + 1) 0 0)]
( x* [8 h# E& [* E2 D
8 W$ s2 c/ n  f8 _: H
set trade-record-current []
& a; m$ I1 ?; A! Jset credibility-receive []0 ^& h9 z( _0 ~4 \
set local-reputation 0.5' L! l! n6 T& H) ^6 p3 H; m: h
set neighbor-total 0
7 c+ T* s9 j5 \1 m9 lset trade-times-total 05 T6 \& h7 _7 r
set trade-money-total 06 ?( e0 C+ S& f; s9 K& G
set customer nobody  E* \8 Y0 Q% m, K
set credibility-all n-values people [creat-credibility]; `  t7 G/ Z0 D$ d  Q' M
set credibility n-values people [-1]
) ^% `+ s* l8 c; Kget-color
* X" \$ D  W+ o# C

) d; ?& D7 a4 a. t1 K1 p) G& r* tend/ V" O6 y9 Z5 o2 w
4 C# m! D/ A5 p3 N7 \! J& w
to-report creat-credibility
, v, \8 m3 z8 j6 i  a( Dreport n-values people [0.5]
3 F- o6 m( I  R. j+ F- a1 Cend; y7 Q7 l4 ^. d/ a. f
/ T) b$ X0 ?% r5 Q
to setup-plots
, k' x& q6 Y- o7 P7 Z3 }+ w' ]
' H' V4 B4 U" {9 jset xmax 30

( n5 x8 E7 t( [' ?4 ^
2 X3 |  c' [; C; U0 A. Fset ymax 1.0
) M1 q& E0 [5 A" ^3 |/ o( K
+ i' n: c7 h! ?5 P
clear-all-plots
2 h  d; Z) j* e) R

6 ~9 I* u5 `- Q0 d4 B' @( u" Lsetup-plot1

5 i: C' N7 q4 `; i% F
+ \8 \0 J! G5 D  m* V+ o% Hsetup-plot2

$ y( b3 `2 M! o0 o3 e3 d
* k. z7 s9 N& Z& w9 }setup-plot3
9 I/ |6 Y9 w4 S( F3 U0 i
end1 J" F" P  K8 J) m* O, L, |3 L

; l. p6 t  G# [1 S6 g9 t;;run time procedures
4 b6 k" x7 U6 n4 V# ^
$ Y2 {3 G, E( D: L; |to go
5 O/ k- a7 O6 s3 Y) p; Z' G
' _2 r3 s/ }% A& C0 yask turtles [do-business]
0 C/ {' w9 @% H; E' I2 a* }1 n
end
" @% r  n, X4 ]# B$ N2 Y& t3 |+ |' `" ^1 `2 @8 v
to do-business
5 H4 X& _* W% u4 [
4 P/ }, a; t: f
1 {1 n, l. X. [2 y* e0 F
rt random 360
* ^7 p* A& X" ~+ r
' @! x, c% L$ t; `
fd 1

6 o& y( D8 O3 D0 l* p; l
+ x- d4 K% {% H% r+ q: d* vifelse(other turtles-here != nobody)[

$ f! W* O# B# X6 u( H% K7 [) {* q) A
set customer one-of other turtles-here

$ ?6 V: P2 J1 h' H& v- V: V
/ F# M- U. V1 e;; set [customer] of customer myself
- e  b6 D1 g$ ~) i; y
6 O! W# y* Z, `1 V  p9 ^6 i1 q7 S
set [trade-record-one] of self item (([who] of customer) - 1)3 c5 D' z1 L; i7 p. P
[trade-record-all]of self
; H. H3 e  o& @8 f/ W;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 X/ c. L( \" k9 N0 s

$ i8 W5 u/ k4 Y1 y( V' Y! C; C7 f  kset [trade-record-one] of customer item (([who] of self) - 1)
- D8 K) I. C) D# @  p[trade-record-all]of customer

# b0 r' P9 T$ f4 f" F+ A6 C$ c2 v: j$ H
set [trade-record-one-len] of self length [trade-record-one] of self
0 `  |: ^9 o# B; ~

# \9 m- @8 P3 ~  R9 m3 V& I3 _set trade-record-current( list (timer) (random money-upper-limit))
' N  i! d1 g% ?$ E5 |

/ u) f3 j- ]# j; @, J- \: M7 g1 \ask self [do-trust]1 I. R4 X* Q) D% k! Z8 p
;;
先求ij的信任度
3 \% B# q4 G8 I# f3 j/ ?; D* Q* b
4 n4 a' m, z, B2 H: f+ ~7 s$ g2 O1 {/ wif ([trust-ok] of self)
5 h4 ^! |0 ~: r' W, p$ h: y;;
根据ij的信任度来决定是否与j进行交易[
, b# O" b9 K+ qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 O" E5 O! r, u( A, B& V. Z
# {! a2 `( h; `9 r: T$ @[
* q9 G2 \5 z  v1 p, T

! G9 a4 Q1 y; Z5 q. H& ]do-trade
8 y5 N7 u7 w9 b$ D

6 F; y3 Q' l. }9 f7 Xupdate-credibility-ijl

' C( W+ K! f, X+ d& k: O, ], b4 g9 Q$ ]; N) _( `
update-credibility-list- c0 e# Z  i" I% F/ C& ^& k
% E: J+ \5 K% C) e1 R

) e4 W: {, G# d; A$ V% p$ c8 b5 L5 e6 jupdate-global-reputation-list

5 z) p; ]3 ]3 B# E( j3 Q
" c6 j  g' p, E; B. n, |poll-class

1 I  }$ F7 e9 o% F% D8 `
' M3 L' A, T3 {" Oget-color

) x+ L/ n0 C8 W" u& ]# s) V) i
' q  u3 D' `3 i6 i; c! U0 b& q9 u]]% z" l3 G, s$ M. H5 L6 Z

+ {$ G/ j: s! I1 F3 ]6 X* U;;
如果所得的信任度满足条件,则进行交易5 K3 m4 [/ w0 N8 I5 K

0 G- i# }- ]; h* ]) Y0 A4 @[
+ ^4 r) L3 Y. d

5 d( h/ v9 Y) Qrt random 360
7 ^1 s( U- a9 @0 {1 i

5 U  F  N$ }* Dfd 1
/ W: X% t9 y# m7 A
2 [% ]; f0 X  P' G$ c( m
]

5 V0 {+ D! H  R- u% J& l9 I& V9 F! D' |0 s3 H7 @1 S8 `+ m' E/ h9 ?
end
( r! D- s: e3 e# k( V# C9 {9 U9 m
4 }5 v- g6 K, z
to do-trust . a1 z/ S; O; ^( X
set trust-ok False
, u3 Z: ~4 ^9 Y4 h0 W5 k4 P
9 G5 e; H2 _4 ?/ Y2 n
. ?" E9 p/ Y1 d7 v$ d
let max-trade-times 0
8 u8 x2 u6 ]4 [  Y. wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, y/ J, m' V/ ?' {  ~) N0 a5 }, {let max-trade-money 0
3 v) C! ^1 i) @; A* ~% w( cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* N) n, y2 Y8 l8 E# M3 u4 j, Llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ e& Q) O! ?2 `' P. U6 I% Z# q% c' W" D# {

1 s! T: J1 `  F* _$ H7 n7 Uget-global-proportion3 g% u  e2 C! x  L
let trust-value
8 _4 [, S& K# O+ K3 O9 c! o/ @: olocal-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 t( a) K3 v: L3 t% [; r/ J! Sif(trust-value > trade-trust-value): Y5 I+ q8 ?/ \; B4 I
[set trust-ok true]
- g$ B) D# ~+ Z7 m" ^0 L- Nend+ ^+ p7 K+ t7 O

/ c+ s" R% v) f/ b6 ^to get-global-proportion, G) v9 u9 O) D% e
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: z7 U3 X0 r3 O. C( h[set global-proportion 0]: C: |" Z& P% {- l$ R  q3 ]+ n' ]
[let i 0
$ P7 |! q, E6 t- ~8 C1 |9 F$ tlet sum-money 0: \" D* ]/ ?  O! g/ F
while[ i < people]
9 t! z& M. ~7 X[' V- K! V$ o  u% z: V( }
if( length (item i
4 Y* T; ~' e5 ]5 E/ i- P$ ~[trade-record-all] of customer) > 3 )

- I) @+ p0 e; r[& I/ O$ |9 V9 E+ `# Y8 Y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ O4 z. g) Z; y* W0 Q7 L
]
, v- n- r  ~1 M6 v& {' s8 Q]
' m+ W# r. l0 e, Zlet j 0
* Z4 j5 Z9 d# `( O1 h- i7 vlet note 0
- s9 P7 ^, t( Z1 |while[ j < people]$ p! ?0 C( D- ~% S& X: a
[
  U# R; A; y7 x" W' N4 hif( length (item i
/ t! Z! @1 t! J+ X: j[trade-record-all] of customer) > 3 )
# s9 b7 N; b) e
[
0 `- _: g9 U6 G$ @ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. _# a+ s: W5 o1 T8 \+ d) M* z; j' [' C[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: V' H- M: F% A+ q
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) H7 ?, A& P! _# M3 R: ]
]
& \) A  O8 W. X9 g: t. Q]4 k/ S' g7 i. S! H- Z* h
set global-proportion note
- _6 @0 y& z* J0 P  ^; N& `]+ f- S8 W1 W9 Q
end
( ?- s" d/ @1 m( _- u( c
! V8 c; w- U0 s( Z2 [+ cto do-trade
, N( S4 `; V" V, o;;
这个过程实际上是给双方作出评价的过程3 v: l4 z- h8 X0 r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- w7 \# P, p& p. @* Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 V7 g3 n8 V- a0 a6 R3 O8 O7 U" E# Y- Z' R
set trade-record-current lput(timer) trade-record-current
. `! v4 ~5 N5 ~4 j;;
评价时间& @9 G  O+ s+ e+ {: u& Z
ask myself [0 g: E8 f# P% X. ?: a" R
update-local-reputation
! ^: O: q' t  i: I( g0 \% Fset trade-record-current lput([local-reputation] of myself) trade-record-current
  q2 A1 J( A4 X* Q% `* u]
2 C, M$ P+ @- s2 G2 q: y- Nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: b. h0 l, u4 C- e8 ]3 B- `& C;;
将此次交易的记录加入到trade-record-one
) _$ @/ ~' d0 Y  W- [, P" N# l1 jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 z- d( R% X! m# ^, ilet note (item 2 trade-record-current )1 C7 r1 U0 V3 |* {
set trade-record-current
! a. L9 E5 Q9 I* _6 g5 q3 q(replace-item 2 trade-record-current (item 3 trade-record-current))
1 f8 q7 S+ C7 c$ |" q$ N7 R. }: G3 d
set trade-record-current5 U8 U- ]) `8 j1 b6 w
(replace-item 3 trade-record-current note)4 Y# u4 P  t5 g% B) K) d( P  V5 U

8 P+ Z7 P$ J2 y6 j2 o1 B
1 W* ]( w& A7 b
ask customer [
4 r7 `4 N8 _5 \, m* ^! J# a( K( cupdate-local-reputation
5 n* J- J( d: Q0 eset trade-record-current
- R. B7 ^) n- T0 i- u* Y! Y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 q' h2 u9 Q7 J$ G& j7 ^* O
]
/ w  L( d9 q, t- X8 J9 a( ?9 ^
) b6 w% v4 h" T, y0 m

% l9 y( ~; h6 U# d$ C5 m4 G% lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 Q. `! ~! B3 B. o
+ m$ p# M  O. |, P1 v" S
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 z( o1 b+ U0 I5 U% L
;;
将此次交易的记录加入到customertrade-record-all
! p1 \3 V* i! G# _6 w( ?2 ]# ]end1 j1 J2 n/ {4 B
* @6 `$ B& _3 J' _+ P& ~  ]
to update-local-reputation
& k  }+ Q+ o$ Kset [trade-record-one-len] of myself length [trade-record-one] of myself8 V. O' j8 o4 t  ]1 v/ I
  H! W7 V/ w1 M9 f

5 A1 y* N, C) J4 u( u) c- n: s;;if [trade-record-one-len] of myself > 3
1 r$ p0 e" k) a) G0 u- J- c3 w
update-neighbor-total' A  C0 ]2 A4 y- g6 x
;;
更新邻居节点的数目,在此进行
  A/ y+ a% v8 ?' A: C3 Glet i 3
# n& C$ d9 D3 B! D: q% L7 c+ alet sum-time 0
! c3 }$ w" O) \. mwhile[i < [trade-record-one-len] of myself]0 c2 r0 p3 ]; x- ?. {% o
[
% t. n4 l! `/ T/ Z, Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: S/ ^* i3 ^" F! e' G- Bset i
# M$ n. h" A1 t% _2 @0 }- k1 l( i + 1)
) y1 ~( E8 I% h! d3 J8 W* b
]" j/ t/ x$ T0 ]  n
let j 30 u7 u$ k" \+ y. m
let sum-money 0
$ [  t' d4 E6 c5 Ewhile[j < [trade-record-one-len] of myself]
# @9 e( x: u& I8 {  `[
0 U4 @0 d- A! D, P% r4 Eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
; j" v# S2 H. v! }set j
- P( w2 i0 e5 b5 }  g( j + 1)

' w8 c; }$ m; g; C. @- E$ m]
6 Q# o* u1 e2 s% w0 B) Tlet k 3% `, B2 F. N1 s* V0 m
let power 0# ?/ d/ R2 A2 l. N) Q
let local 0
6 x4 _0 H- v6 t- N  ~0 U) ~while [k <[trade-record-one-len] of myself]
5 Y4 e3 M! [  S3 f" e5 r[9 r: r+ d6 {9 o8 v8 N
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)
; f: V9 n9 N( g% `set k (k + 1)0 ?0 b, H) s% v
]
* ^4 I5 D' I' Q+ h( K8 E! Uset [local-reputation] of myself (local)
6 X3 F# Z2 @* y. c. c/ A" I- bend
4 w! u" G1 K  x7 L! `1 D7 N, [$ K3 @' K
to update-neighbor-total
8 y' `: ~3 P# {; @9 j
/ V  t8 q4 z8 i9 ]& k2 C4 Gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: T( b( p0 i; l% b. ?+ Y

. C+ x- }7 I# L( W1 R

7 _; p7 f* X3 Oend" n% F! C' b9 s/ d
. @+ P2 X+ M: s% t2 [  A
to update-credibility-ijl
7 p5 t0 L4 j/ J  {# T
  |' ~7 g0 S) H0 H3 B$ W# g9 @;;
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' W; M+ x! T  U$ G( N, {3 b, Z
let l 0
: t0 d5 k# _- r$ Jwhile[ l < people ]( D' {' C. R& f; @  i9 m& 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9 ~; @. `: W' i
[9 g" p% `3 G" A8 e5 n- Z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 O4 E; J# e) E' r# o
if (trade-record-one-j-l-len > 3)
3 D! F5 l3 K. 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( a* s1 u- h$ w. p1 |
let i 3
! |& m, C1 b7 E) xlet sum-time 0
1 g4 L1 B* ?. u& iwhile[i < trade-record-one-len]& w( O2 N; {+ e
[
% N0 a/ i) J  u9 c: A9 cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 @/ V/ R% C9 j! K0 s3 s
set i  A2 e; Z% k7 E8 f- Z2 _* O! N
( i + 1)
; s% O+ j7 |. m$ k6 e" ~0 p
]2 t' c) y' t! o' ~8 v+ `* ]
let credibility-i-j-l 0
$ \1 Z) V( z. O, b. l;;i
评价(jjl的评价)
$ C3 G! {- [( |; M: y2 glet j 3
6 ?; b- @5 H1 rlet k 4
$ ^  ], P8 c4 \; N5 f9 P. Owhile[j < trade-record-one-len]
1 N' e. S4 ~" b, S* V1 \/ m[
5 o/ L6 S' I. {& d" ewhile [((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
! n5 h; p+ t, n2 |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)
  I' s+ R6 K" f0 P% _: q2 P7 S$ ~set j6 v6 n4 L* Z$ W
( j + 1)
( v- J, N& d" |0 u, m/ }2 ~
]8 t; }/ w8 {! c0 b/ D
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 ))
7 i% ~; ~2 r0 e4 j& _' v
9 F5 t4 N' W+ o0 J9 N2 E' |
+ W6 |9 m2 q/ J* p! z( h
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); g+ U: q, v' `
;;
及时更新il的评价质量的评价# I; D" i* f) B2 H3 n0 L& I* ?
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 I; A: u  N7 \- {set l (l + 1)
; ~9 q0 z2 {' B8 Z) E]! [$ b+ F/ o5 o" J
end+ h, z" P" i/ Y3 K( i" T$ R
1 S+ [( z# v, G) n) O, I6 E4 J
to update-credibility-list
4 _7 e) f, O& t# f2 U: ?6 P& Xlet i 0
2 @7 m; a0 |$ P8 Iwhile[i < people]$ s4 q3 ~/ k8 ]  Y. {" ~: P
[
- b9 _- M1 r& \2 r0 d7 Ylet j 0) H! o6 B3 J( o) z3 @
let note 0
$ ~! @$ c; H2 @# n5 ylet k 0
2 l6 x5 C$ Q' J9 O! ];;
计作出过评价的邻居节点的数目
1 X  I# a2 S" v- |) Bwhile[j < people], r" x0 ?/ w. A& k0 V8 y
[
. l2 {) d5 p4 ~5 T) e, jif (item j( [credibility] of turtle (i + 1)) != -1)
! ~9 R  y' _( M8 T3 f;;
判断是否给本turtle的评价质量做出过评价的节点
% m9 \5 W# N4 T) y. L- I[set note (note + item j ([credibility]of turtle (i + 1))). j- |# K0 {9 P! ~9 r
;;*(exp (-(people - 2)))/(people - 2))]

- D9 p0 s( O9 l3 _# s; Z1 l6 Y" k; [set k (k + 1)8 _! h" a- A% a, a8 K+ P4 C
]4 ~+ F" J1 N5 d( _. J
set j (j + 1)
- f# _: h5 f! O) y. w$ c]$ e! u! c4 F  G
set note (note *(exp (- (1 / k)))/ k)
" y( K  K/ r/ J5 W0 x- P3 P9 I1 S$ Fset credibility-list (replace-item i credibility-list note)
( Y& A% r% a2 P4 t# c, j2 \set i (i + 1): I) S! m  R+ s2 G) s/ @. ?- x
]+ Q: m3 u  v3 n6 `# O: d
end
1 p- |$ D/ ^$ H$ r( s* y  T3 k, e/ ^5 T( U  O! A0 L+ |  E
to update-global-reputation-list# }$ |6 }5 P3 [7 k- I" G: ]
let j 0. Z/ p  N1 R5 I7 s/ e+ a+ `; f
while[j < people]
6 p) b7 d- l0 \) \* q6 D$ ^[
6 j. F* C/ ]7 `( A9 f( y' j0 \let new 0
' W  o# k! n+ a. X3 i8 n5 Y. L8 C;;
暂存新的一个全局声誉
7 N/ l6 n" s: L: hlet i 0' g% Z4 L! x* Q! K
let sum-money 0
* Y4 ?! c* _5 e+ R* G) |8 Flet credibility-money 01 p( w; ]/ q- X7 d
while [i < people]5 ?9 C3 Q3 _( V( o, {) ~0 r3 p
[
; F  x0 i, \4 R/ O. Mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 b. h1 z, v* T/ A! l6 N% `# e
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ k) u' b7 t& g; O
set i (i + 1)& K' G: g! `3 l* O* m
]
$ O. V$ N' _: O7 E! ?" Alet k 0* X& W) k- R: p% q4 U- O
let new1 0% z& S- ~# l& [2 F6 }( U
while [k < people]
  @; g$ O/ _* A8 ~$ i[' I) y2 S2 ^. C; ?4 ?: W& b
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)3 l) a7 d! h" O
set k (k + 1)4 S2 Q: N2 q/ Z& B
]
/ O- K' z6 v) f- V! V0 Z" Q) yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% r, A! ~9 N* _1 k7 a" Iset global-reputation-list (replace-item j global-reputation-list new)$ ^- {# e% f8 {1 Y! B; T
set j (j + 1)3 ?; G1 A# T$ b) e
]
5 T( I2 D  n0 S7 j2 Nend
/ D- E* x9 \) l4 k6 S" w" r
8 k6 M2 I* N2 v1 ]2 Z1 W4 n. \! |/ e( E( L& y5 q
, d: c" W4 @* u) r1 y* R. o
to get-color
4 z6 h% ^  F, Z+ w+ ^6 }3 l
, u& D6 x+ q+ w% [% y( dset color blue
7 b8 P9 L4 M+ r7 A7 _( D
end
- O4 ]7 s  L8 G1 m/ O" p# C3 C  u, L1 {1 O: {# a
to poll-class9 S$ ?3 b/ C1 M  N0 K7 |
end$ W6 a$ j; [$ v7 `0 y

- r  i5 M7 T8 u( b% K# kto setup-plot1* [& G" O. e; v0 {* Q  z, ~1 V

+ R5 @2 Z8 z, ?set-current-plot "Trends-of-Local-reputation"

* s/ Z$ u2 ]; O3 s$ k
$ f4 r, k2 w, U2 e3 S1 _; vset-plot-x-range 0 xmax

- f; F  V& c/ P- ~6 Q4 c. t* h
5 Z+ a' @0 G% Z* S3 [set-plot-y-range 0.0 ymax

- z7 U, x5 d2 M2 P5 S7 `; s" D  Jend5 C# T8 Y, e' o- R7 i" [

$ Z$ ?( [; b" V: Sto setup-plot2
; R  q0 i; N8 y5 w2 b; l& D. f' x& f
7 o+ B) j4 v5 O0 @7 t2 fset-current-plot "Trends-of-global-reputation"
4 a( N, G6 \: O
' j0 ^% P: E9 ^
set-plot-x-range 0 xmax

) z3 Y3 c. P7 a: @1 @, F( @
5 \" j9 V  X4 S# P# e. Sset-plot-y-range 0.0 ymax
; c9 q( j+ l% r3 L
end$ X( Y. E' G# x, m. @3 x
+ ]2 x4 c( e6 |1 I. J
to setup-plot3% i8 ?# {; r4 ?" {4 B; O. @

1 f) M% a5 b/ H, O  Oset-current-plot "Trends-of-credibility"
" L! P: ~5 W. o
: {0 k+ e8 n7 G! h
set-plot-x-range 0 xmax
7 t- w) h) {8 B5 x- S

. k' E. S) M" B2 rset-plot-y-range 0.0 ymax
/ ^# f9 D% p3 V, `
end
8 D+ l5 U4 q' R8 {2 B  s5 N$ S
to do-plots. E* ~3 N& I% w6 @
set-current-plot "Trends-of-Local-reputation"
2 M2 J$ ?+ l" i! n1 bset-current-plot-pen "Honest service"8 ~; J; H/ h8 s0 O& t& H+ N
end
7 O1 {8 r# L4 V/ Z) ^& q. X) V1 A" ?# }! w5 r4 P+ Q
[ 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.' B, r5 l' [( G: g3 }; z  Y/ N2 y

1 u* e% B! U7 q: q$ I( q: f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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