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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:
$ R% [0 D2 o4 W- H: ?6 cto do-business 6 l/ x; {" e, e8 N
rt random 360- S2 P, ]6 m! H( N* `
fd 1. _" R, _6 C' @; k2 ^0 k/ M9 n
ifelse(other turtles-here != nobody)[' r/ d2 f. r+ z" N) L. q! z
   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.9 o2 C' [, Z3 T
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) `, C( J0 p# h; `+ M( V4 B   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" R" N: @9 X" M; C; l8 M* y/ l% S   set [trade-record-one-len] of self length [trade-record-one] of self- w% u, Q% v/ Q) N1 o- x8 C
   set trade-record-current( list (timer) (random money-upper-limit))5 k6 B4 c9 P5 [

  b0 F" L# C: D1 _# N问题的提示如下:
0 F4 ]( v! n3 G( T8 d
4 D* V9 g5 Q& N' j7 kerror while turtle 50 running OF in procedure DO-BUSINESS* }* F/ l1 z# y5 U
  called by procedure GO
: Q" X; P0 `& QOF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ p: F' G5 k0 h$ b
(halted running of go)* H+ i8 ^; O% J4 K7 r& l
' ~9 Y9 x- @! j% ~8 @4 ~1 ~
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~~1 _' N  S' x5 {) H
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 h5 c( g; l6 Y  N! W6 V3 G
globals[7 E5 t5 J- s6 x
xmax
4 C) d$ r% s" Q* c& ]2 e; Xymax, C6 Q6 d6 l/ J& g  z/ P
global-reputation-list
1 ?- r2 H  u7 a# A) A% [
( W1 L3 F9 u# Z6 ?) o;;
每一个turtle的全局声誉都存在此LIST& l. f9 @$ ?) P. ~
credibility-list+ T) q' T" G; ^. E# [9 ?
;;
每一个turtle的评价可信度
7 J8 F6 T' G& y7 w  F6 j5 y" qhonest-service
$ ~9 Z( M% O2 B9 a" ~! E! E# aunhonest-service
. c( W* r* c0 a* f2 doscillation
4 ~" W( d" Q6 f* _* k- w1 Frand-dynamic
3 [& h) e/ a2 v0 B6 j* A]: X6 V3 ?9 X# T0 r( W: X1 ^/ t
' ]- E- p. Z8 `+ P: |! h. }
turtles-own[
0 q6 p3 Z: r0 W  k- t. A9 P" Ktrade-record-all
% B2 Q+ x6 p: O# b/ r;;a list of lists,
trade-record-one组成
0 C8 F' m! C2 R9 x6 V, n" _trade-record-one
+ S/ Q6 [# j: i# i4 ?; z0 S;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 a: G0 ?7 q) `. t% g( S' e5 ^9 h/ [0 Y
8 E: p! Y& a8 c: n, Y1 O6 z;;[
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]]
' [! p* p7 Y) D: u9 s+ G9 atrade-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]! P1 c3 |: J% @2 Y" R
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  T8 U" H: n% p2 [4 B0 m$ I
neighbor-total
8 [' p3 S- M/ E; w6 x2 ?! r* p# H0 K;;
记录该turtle的邻居节点的数目3 F. _6 a2 |$ I" Y4 @
trade-time. q4 M4 D0 `+ }
;;
当前发生交易的turtle的交易时间/ a, q8 V) w+ v/ b1 n- ]
appraise-give
8 E' g! M/ |0 u) i' B6 \6 q* f;;
当前发生交易时给出的评价
( ?: `1 j% ?! w: z0 A9 Lappraise-receive/ p& v# s1 e# `4 I
;;
当前发生交易时收到的评价: J* M6 a3 O4 j- C- k9 h
appraise-time
5 n8 O& m2 [- s/ Q;;
当前发生交易时的评价时间
5 Y7 I8 T" ?% @6 @local-reputation-now;;此次交易后相对于对方turtle的局部声誉$ O; M/ u9 c, t0 e, C( W+ ?: ?
trade-times-total7 B3 J8 y3 y7 [, c2 E8 a
;;
与当前turtle的交易总次数
  i4 Y7 }+ f. j* y' k/ d; htrade-money-total1 g9 P/ H% W  P* I4 M- k
;;
与当前turtle的交易总金额
/ @4 O9 |% {$ R) Q  Z5 Olocal-reputation) {  d- R! I8 k5 u% M6 n' t0 z1 U4 y
global-reputation! D- j1 R5 C* O9 X2 z, s
credibility
2 Z8 A+ M, z: i& V4 Y( j; c;;
评价可信度,每次交易后都需要更新1 n0 Y, t2 D# p7 c* u( u: D
credibility-all7 C% m' k* T* W/ I* I. r
;;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$ T4 L' F& j0 u7 T2 n3 h8 D

6 n3 ?& G2 \2 `! w6 |; P+ u;;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
# Z$ ~8 P& ^* ~3 H2 {credibility-one6 z( r. v7 l% `) k: T) d0 W0 E( n7 p" X
;;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
& p9 w% l- P" M! |1 G/ L  j, B3 D" bglobal-proportion7 \: V) D8 g3 U1 r) i# h
customer
  [* d3 G7 P6 a. [" tcustomer-no- V/ }/ k+ T6 I2 n! x
trust-ok
& s; t6 V" \& E3 L% S' {trade-record-one-len;;trade-record-one的长度* t; _, W$ W4 a7 [: f" C1 E+ x
]
: R+ M& L) P6 k7 q+ x0 o; t
9 U0 x( Y5 V5 H1 j;;setup procedure# K# m8 b! M, H% p9 o1 ^( f9 z& @* z
1 h9 ~$ c9 G/ I6 D  c+ {
to setup3 o: S. S. w# Z" o4 D( F

9 N+ Z. @( N( _8 v( Uca

6 ^- @% l5 B" |
' a$ j5 r  u0 {) b, X4 Vinitialize-settings
4 d8 M6 l" L7 ]" h7 p7 x: D' q
* }, S4 s- w- p' }& s* |+ L
crt people [setup-turtles]
* ]+ @5 c( M# Q

# }/ B$ v3 f$ F9 oreset-timer

/ _1 }. s# s( {3 P( {( p
& y$ q- n; w! _) ^) t! Ypoll-class
+ ]( d/ m% a3 O& }5 X
$ C3 a0 r1 E8 G: d$ t
setup-plots
; X. w; h4 V+ }% [+ S) F6 f1 D
9 _) ]7 l  X0 [' U- @
do-plots
3 E1 f3 M7 C; B' d
end% m0 I+ u8 ]6 {, ?
+ V3 g( R! C2 ~6 R* H
to initialize-settings, M+ G3 w$ E  n( I/ o5 V
% {6 X: v4 a1 k- F5 g; b1 @
set global-reputation-list []

7 [8 O' ^/ V* v9 g$ u* ^& r
0 z0 K6 W: O; I+ o& ]set credibility-list n-values people [0.5]
8 S4 G9 {/ g8 [2 T) Z% ~

, P1 J, }- ?' x6 |" T6 nset honest-service 0

+ y5 S* k9 o5 ?0 U/ J7 A9 g! {9 T, ~7 \6 g  Q: V" _+ l
set unhonest-service 0
: m+ O* V6 i3 g- }( K: @4 h
& ?- j! D- F( ]- Q4 O
set oscillation 0
' d3 j0 `  I+ P4 P! z4 J( T6 ~! Q3 o
  a6 v! L: G$ h. C4 I
set rand-dynamic 0

: e" b& P$ {- E. Kend( D: v5 r: R% [
' R3 @2 ^! M( b9 G7 Z3 }" \! {* S
to setup-turtles
' X7 Y6 d  `; x& A3 f' q2 tset shape "person"5 p0 H. Y) _, J; C' D
setxy random-xcor random-ycor3 \  `/ u0 A6 M  r$ e- p4 W2 w! j% \
set trade-record-one []
7 ?5 L1 H1 ~# y  A
& Q9 G  L1 U! {& \6 g6 v/ e3 W9 ^
set trade-record-all n-values people [(list (? + 1) 0 0)]
% a* ?. e" o% X
3 q" e! A( w4 W$ N5 Z
set trade-record-current []
1 X0 W; L, l" dset credibility-receive []9 H, R! P9 I$ h- q
set local-reputation 0.59 y; V: z8 T- a' [
set neighbor-total 0
3 d  ?: t; ?8 y% Y2 u. |set trade-times-total 0
$ A- F" c0 s: x; o7 ?3 e9 }set trade-money-total 0
* F8 _% n: d+ x4 w4 [3 Sset customer nobody
: Q1 m! E( U' a8 B" \% q  s+ c' K  Aset credibility-all n-values people [creat-credibility]
' C# _7 v: C1 t  ]set credibility n-values people [-1]
0 v; M4 O6 e% D( s* x, P- ?get-color
5 k2 l  r* q3 f
3 k# J' B9 C( F0 o
end5 S  m/ t7 _& f( s7 w- S8 e7 N4 R' d
8 y$ d# x- m7 L* x" \/ |! V) U
to-report creat-credibility
% H6 [3 H: ]/ S0 z  I' Dreport n-values people [0.5]- h# U% e2 ^& j+ Q" w. E& R
end2 B: m% b* O5 C- ^$ j. D1 ]

# C6 C. u. p. V: i" S" m8 R: Y1 N; ito setup-plots' G  {. n( `( K1 J) Z& [
. K1 r; f$ [! u" F2 A* _: R
set xmax 30
2 G2 [9 G' `1 [8 P) V  w
4 x; B8 f+ ?& S* l, m6 z2 f
set ymax 1.0

: T) ?) t. J. q/ E+ v' V* B- @% E: n% X* U8 V4 Z, T& o* T
clear-all-plots
4 t; b! f1 V9 y4 S

" m1 U; \% c" ~. F+ Ysetup-plot1

/ F& a8 Z$ p2 ^& d0 B- Z/ s$ ]$ r4 Z5 i1 Q) O( F, Z8 w" B
setup-plot2
. y' h0 D1 ]9 A

5 v: x( D( {8 W! c" k9 dsetup-plot3
, |4 W$ {9 f: G& p! `1 D" }
end4 ]+ p; M* x! Q( y2 L% B( s7 b7 T! L

* X* B% B, ]0 V2 N2 f;;run time procedures
7 Q2 l  R9 U3 P, E
4 `! p% D! a( Q1 lto go
# W( `3 X% ?. \& @+ t) _7 F
2 C( d& o4 M) B% ^9 nask turtles [do-business]

% e3 E4 i! a3 d( T& p3 nend  x3 w8 y* L2 `  V7 I* |
6 ^- n2 N1 v+ }1 f& q
to do-business   @" Z! [8 u- q8 N3 |* Z
  _- u! `8 M  w5 ^
; {* F2 s' Z) F" \' c8 T4 o
rt random 360
; v& ]3 b/ L5 p! I$ j( @3 {: d

2 _- J& _4 Q* T3 i1 O, qfd 1

: s  \4 N+ ?- C0 Z; i
+ U' W9 {( c+ q$ B" w/ F* Pifelse(other turtles-here != nobody)[

; ?. M  o( \; i+ J' O
, V7 @; V7 l3 U0 Iset customer one-of other turtles-here
2 v& u, ]; R! E

. N  M# k7 u6 l9 k  N) ?# s;; set [customer] of customer myself

1 j! N/ H9 w" C4 n+ z/ ^& K
, \; E" a: W( r7 c* \set [trade-record-one] of self item (([who] of customer) - 1)
2 D* q4 n8 T4 l7 c. m[trade-record-all]of self% }$ X* [  M3 h6 e% G3 J" O
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- m/ L; [" e0 e* ]6 s3 E
! ^$ Z- q( i! G  o5 C( n
set [trade-record-one] of customer item (([who] of self) - 1)6 _" H$ A6 V; C3 \5 W3 |
[trade-record-all]of customer
9 a! P7 ^% U' q7 V7 C. y6 N3 D
4 b. E  c, |7 s; M6 j4 M4 O
set [trade-record-one-len] of self length [trade-record-one] of self

2 }7 i8 u7 D; ^0 u5 P4 F5 S( E9 a
/ Q7 f8 F, n7 ?' [& v/ [set trade-record-current( list (timer) (random money-upper-limit))
( t2 E8 I5 a/ y  ?3 u

0 t" e( L3 ]2 ]" J# {% H1 t! lask self [do-trust]
$ V+ c3 k$ b5 \6 w+ H  f0 P;;
先求ij的信任度
' k# ~% \, O. ?/ L: O, x( R, B; r7 y% w6 N! k
if ([trust-ok] of self)) s% i0 `) }% W
;;
根据ij的信任度来决定是否与j进行交易[
/ m2 U( {4 c0 Rask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: D* v7 z# [: r& V' F" y0 s3 `. i: `9 f0 ^+ x( R0 b
[
! N. ?3 M& R( Q7 m% E: O$ W
& O6 {. d* ~4 D2 o7 F/ D( Z' Q
do-trade
2 V& T& w0 ?, |7 o

+ Y1 B% P+ e" _& U% K: Xupdate-credibility-ijl

2 N- d& [9 K/ N* [+ |/ }# W% ?  l) ]# o' l$ \. D9 C
update-credibility-list/ q* i' t# @* C7 u7 A% `& T2 s
2 J4 n/ ~9 A0 m8 v9 d8 O

. h5 o6 L0 |% e7 G3 M; _- i7 Yupdate-global-reputation-list
  x) N  i" I. \
- c/ |5 `0 f2 T1 _0 a6 \- v
poll-class

4 k2 `- A/ b; a5 [+ x. ~+ ]) M" E3 ~4 v4 ~
get-color
& {9 t, c3 h9 w1 G8 Y' |
; L1 U; Z) j  ?9 Y9 h6 C
]]
6 Q+ {2 R! Q1 O) E2 M4 W2 p
. a7 X& M, Z: H3 x4 h! h;;
如果所得的信任度满足条件,则进行交易2 d7 @# E9 B( n$ B

$ _/ ~" p) o+ \& x, U! E  j3 r[

* O* d8 S5 f) x8 |  e
4 b1 }5 e- H/ Q& nrt random 360

9 u  I' {/ ]/ b# V& y6 S/ d$ n8 s& Z2 J. W. y5 g
fd 1

' E( T; c3 v  l0 W/ ^% Z2 I2 Q
# E$ ]0 p- [* B' E( J( m4 t" j9 s' H]

8 O6 t8 j6 x  q  H" I+ r# }/ S; w2 a3 e0 T7 P! e
end

6 z8 d- d: W* A) D3 |) {5 \, V. n9 S( n; Y( I$ B, A
to do-trust 1 N3 k3 T" @5 j4 f1 s
set trust-ok False# [; ?: U' F& Q) c

4 x, ]3 P/ Y' r6 _, A! @
0 e4 C8 P# H9 x7 V
let max-trade-times 0
9 l: j3 ]/ [+ G0 ~# H( ^# Mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ i* x* W5 [( s* X, l& n
let max-trade-money 0
1 ^. W. e" @9 C, `0 O( X9 lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 _; }3 l) E; m" l
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( S. [" F  t1 a$ v  l, U/ k8 @9 U# b; \

% h- @! Q! t& e! l- b4 {7 Hget-global-proportion
4 S  W1 M. |$ N4 |3 D7 jlet trust-value) d- `- r  a6 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)
- N7 V9 E1 E% I) W6 J, v  G
if(trust-value > trade-trust-value)% w; ^2 I4 Q# [  B; I' T* w
[set trust-ok true]7 M# E( U6 L/ E# d9 m5 U
end5 Z* R$ E" f4 c& L. y1 O
" o. p  G6 @6 J) W* M* d, V2 E
to get-global-proportion
- U0 D- v* P, I& F- Fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
) _2 `. w% U& k' @[set global-proportion 0]
( x3 W: I+ l7 O7 T[let i 0
: S% k# s- B: W8 m3 [% M9 alet sum-money 0
4 Z) a' j" Q5 o' vwhile[ i < people]
4 X$ H3 ~  `( D. Z[
8 I3 l/ C& i, l* N5 Yif( length (item i
6 p3 S! v2 e8 R# Q0 ~: ]7 `7 S+ E[trade-record-all] of customer) > 3 )

5 `6 e! G9 a* P# }4 a[
- @& S1 |" i, B. v0 Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) b) y/ z4 o, v/ X$ a]
- h- q  N$ M# p/ h: Y0 h! K]
/ e0 A7 W0 I7 g+ d) H# N4 Wlet j 0- L8 N/ @6 D6 Z* f2 s) M
let note 0; A3 `! i  F- T9 ^+ ^6 c" b$ h
while[ j < people]
* n3 X2 Z! y1 B( p! D! L* S3 i1 E[
1 j8 Q+ p8 w/ M3 Gif( length (item i
; a1 ]  _! N* q7 @: E[trade-record-all] of customer) > 3 )

/ D- `$ F3 c* b& @8 o* k[
0 v# w. X4 l/ t) Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 Q3 B2 F0 F8 M% a
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; s6 m$ {+ o2 z% j+ [7 N1 K* ^
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ s& r$ M; C9 Z7 w]
9 U2 F& R/ e0 x5 `5 G]
9 y" |* E8 d7 j# K1 G$ Cset global-proportion note% V1 a- [7 y2 @. Y4 d# H
]
: `- y* ]/ N) G7 w1 H1 y; C0 Cend
4 m  f( R" V8 n, q; e* ?- U
/ ?' N2 w9 r5 z( X) }$ e7 w2 yto do-trade! P  ^3 D/ f& e% C/ h
;;
这个过程实际上是给双方作出评价的过程
+ _5 ?. e+ \6 @9 A* g; }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( v/ y. ?) m8 v: C7 Sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) V+ W. u# k2 A0 q2 V9 l8 K# eset trade-record-current lput(timer) trade-record-current5 z( |/ I7 b3 C3 a
;;
评价时间
, N1 k1 l# C* I2 Z' w" Wask myself [
/ K$ v# O  B" T/ W3 @update-local-reputation6 n- }" W: h4 R( u2 x
set trade-record-current lput([local-reputation] of myself) trade-record-current
* m# T  B$ F1 n( p9 e% F, a]5 D6 H+ o# U! g  T
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 i3 ^8 i0 @0 l) \
;;
将此次交易的记录加入到trade-record-one+ ~* ?9 l2 [" d6 u6 M' Q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 a! N0 j! f' x' ^4 q  M. i+ B! elet note (item 2 trade-record-current )" _! [9 ^$ K# ^9 D1 h( L4 p- ]
set trade-record-current
4 X3 l" X/ T. f& G+ y(replace-item 2 trade-record-current (item 3 trade-record-current))

2 K! S; ]* w5 b/ }set trade-record-current
' k, J- f1 Q" A7 U(replace-item 3 trade-record-current note)9 M4 n! _& e$ k; H" u. t
/ t: b+ i6 \! ^# Y; r0 Q

4 r6 Y- A1 i  p, g; kask customer [* t1 G% \: V4 @  W) Y8 H1 |% o
update-local-reputation! o( Q$ Y. A3 ^% b( ^
set trade-record-current% J/ T( }4 R% F+ Z, S
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" M9 G; {0 ]1 z: u2 k]2 Q) V4 R5 |: V) [  m

* G8 q: l) j( |
; m4 ^3 V1 T) J: l" F  d7 b
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) U* |  @1 x' N) \- ?

! z: \& O& ]: w) Y* K6 `set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. @" q8 V$ @! B9 `" J0 }- y;;
将此次交易的记录加入到customertrade-record-all
0 W8 `9 _8 f" G: r$ mend
" \; R! V8 `  R5 p; p/ A
' Q  X: {6 G) L# oto update-local-reputation
" {1 h  `6 v( u4 L3 U& [set [trade-record-one-len] of myself length [trade-record-one] of myself
" v  J+ {7 h+ T" {. g6 k+ ?& M2 [' @! {3 Z# b- }
$ ?5 V, Z& V/ k; Z3 k
;;if [trade-record-one-len] of myself > 3
! O- w" H" _$ I! j$ b
update-neighbor-total; |2 m+ J$ X! }, }/ f# D3 \
;;
更新邻居节点的数目,在此进行
1 f# f: u9 s0 Ulet i 3
" j% @. W! V. j% wlet sum-time 0. o' i% V# u0 h# [5 E3 s
while[i < [trade-record-one-len] of myself]2 a1 h" O' D3 i4 W. h4 H" L9 Z
[
9 ~! {% k9 q  mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 `, R8 ?8 f5 N8 O/ L
set i
  o  w+ V7 F- F: i/ Q- z( i + 1)

/ _% }, C- t% B( F/ u+ E, x, ]]3 x3 C7 c% U* ]$ w9 {/ S
let j 3* e3 a- n0 U: L1 A# X2 W
let sum-money 09 u1 v- g6 C8 R8 `7 \" F) h7 \
while[j < [trade-record-one-len] of myself]5 y. [3 G7 c5 O( T2 n
[
' c8 p: \* D! d2 H, E9 j" {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)6 n0 h  R8 u8 t, ]
set j
9 m: N- G- Q4 M. Z( L4 f( j + 1)
7 S% n% k. Y6 @9 \2 g  m2 {
]
6 H7 |6 f' L4 D' P6 Plet k 35 ~0 X& B; t# {1 C6 W
let power 0
7 r  Q& N& S' P! {' Slet local 0
2 T  o9 P. C: L- p5 k0 iwhile [k <[trade-record-one-len] of myself]1 t* Z4 v; }& T
[7 A" h' Y7 |; u. H
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)
, w6 e$ r/ X0 u  X! `set k (k + 1)
7 ?. P7 ?$ n4 Z3 o0 t  t% B]
3 p9 h5 }$ E4 j) |) C0 |set [local-reputation] of myself (local)
: B& X9 D% `( ?# e# \end
) u, A& i3 x! v+ o* G0 v
1 ?7 r: ]4 ^/ w  \to update-neighbor-total
* c0 p" G( p. @' P
: t9 W2 ?: A; ]3 u5 oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 Y' D7 w" T, B7 m, N# u
: S5 f. E; f$ t  F3 X/ \
( c9 t1 w- l0 b; f
end  F' ?7 ?9 T2 y
8 W/ }5 K. M. Q7 w# ^% h$ J
to update-credibility-ijl
( e8 a; T+ A& n/ e1 o, N2 q2 E$ T, ]# y/ t: X( T/ I
;;
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。/ [2 V/ v6 W% Y
let l 0; u" X2 A* y, M5 q
while[ l < people ]
, _8 O2 C4 a6 K# [+ l;;
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+ e( [& {. f: F: p
[
3 c  D- A6 W% T; E$ A) ulet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ W) j; g; C6 \3 G0 x# r; wif (trade-record-one-j-l-len > 3)
& V" B) \0 [( C, Q: j. E+ ^[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
/ T+ C7 T( Y/ Y2 N# }, J' ]- @! ilet i 3
" d+ j  @: x" k0 P- M" hlet sum-time 0+ Y$ L; C- l5 S/ i% b$ O  ?
while[i < trade-record-one-len]9 p$ V! J! Z6 [, B/ e4 K  }2 Z
[8 n, h* ~. I) y- O& P5 Y0 |' X' d4 m
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 n; J) ]) o. k! t7 L1 k8 z3 Uset i4 G7 v" e) v& C% [) Y$ }; T: q; P
( i + 1)
/ Q6 I! D( q: @8 \+ W
]
  j( e3 K. v; r0 Xlet credibility-i-j-l 05 Z9 q" t. d4 r8 B+ L+ U" ]
;;i
评价(jjl的评价)
0 U5 l* ?* h2 d) U1 ~, \, w& l/ u8 clet j 3
  {; a9 m7 P$ C6 M# m1 hlet k 4
8 u7 R, R" @0 ^9 u" Nwhile[j < trade-record-one-len]
8 T# y  \9 S" j3 {' C0 x, Q[1 W4 q& f4 c& d% k0 K$ w
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0 j/ C# K. v5 K2 K1 p* @( B  m
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)
7 l5 k/ |; k2 K, v2 z' P. b. Hset j
$ K8 M9 V, C: |+ N( j + 1)
) ~+ G9 g! \! c$ `+ W
]
( _6 G( D: d) d( Gset [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 ?! ^5 B1 }& [7 O, w2 h% w! t  @. ?6 ]9 |% T
( }. ~$ \6 t5 g& g! m5 ]
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' H& O, w% y8 W; d* r
;;
及时更新il的评价质量的评价9 r8 K- \) }/ Y- J% r
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  ]' @% X) N% V: D% s1 kset l (l + 1)
: x  \8 T1 [- Y; l* C]
) S3 ^2 }. Y( {! x* i& _end
3 V0 {% W: u/ f# U+ [7 S4 S+ U( ^0 B8 X4 a+ \  F5 U
to update-credibility-list4 m7 x" V% e* U1 ]. Y/ S( A
let i 01 b0 e  K! H1 Z7 d! d" ~6 C5 a
while[i < people]
) |4 y) N& h! n2 t! H& @[' C  C% O. S5 C( Q+ O$ o2 u+ [- B
let j 0
  R9 T+ d+ l0 z7 Y& olet note 0% W9 k8 u1 X( {
let k 02 ~. q# o: U+ ?, m, t: G+ l
;;
计作出过评价的邻居节点的数目1 _$ c- @" a. q6 o1 X# n
while[j < people]# E6 w/ T: H7 ?5 ^  D+ ]9 U
[
* l0 H7 ]0 m3 x! h+ L9 ^if (item j( [credibility] of turtle (i + 1)) != -1)( ]! y& @: ?. y7 s9 u
;;
判断是否给本turtle的评价质量做出过评价的节点# [" ]# g. F$ I/ {# K' i* r* E
[set note (note + item j ([credibility]of turtle (i + 1)))4 C$ G$ U' z5 `2 B( s! [
;;*(exp (-(people - 2)))/(people - 2))]
$ Z$ \! m( B5 g) Y# h7 R6 K
set k (k + 1)
$ N9 J  @) ?  l]* W+ z8 `2 a+ ?
set j (j + 1)0 [$ W! z! J( S1 V1 b
]
9 i9 D: ^6 ~, m5 B  R) |! Rset note (note *(exp (- (1 / k)))/ k)
5 J& C6 {( v7 \6 ~0 bset credibility-list (replace-item i credibility-list note)/ K8 C  v: ?, D
set i (i + 1)
7 ?1 y/ q7 `4 b]
; ~/ F& z4 p" R) w- r$ n$ {end
6 j% ?" X( S  `1 y* S* ?3 S3 @6 z- v8 z% m
to update-global-reputation-list9 d4 g# X3 q+ r/ I
let j 05 O8 S; {0 D& m
while[j < people]/ W9 `/ L7 |' u7 ]. r) h9 r- Q& G4 d& {
[/ ^. i) ~& t, G- f( y" D
let new 0
0 Q' A3 g8 J, r" x# d, g7 O;;
暂存新的一个全局声誉
0 o' _) v& ^5 r5 o7 _8 Z+ N0 elet i 05 M& l* b  A1 I9 B& f! V; ]
let sum-money 0
: ?8 y* K0 S+ G' l! R. vlet credibility-money 0  Z; a  B& e! ]1 q& }
while [i < people]
9 s1 Y/ x; q$ [. C/ _7 q[
, i% `. S: _* G  P- ]* N3 vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): ^! N. F( X3 r: g4 x' e8 Y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 F# N" P; R  E& d
set i (i + 1)
. u& a0 `, Q: i: m]
6 b3 Q3 g) E% \; c, S  q5 w8 nlet k 0
& ~0 U1 ^! U/ w( [( d4 ^let new1 0& o! V$ @6 M) M9 g% l% Y
while [k < people]7 U7 M( d; D6 l/ \# S# k
[
9 C9 b! ]0 {% [  Mset 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)! ^$ _% {( S$ z) J  x
set k (k + 1)
2 N: ^5 r6 x% [9 y1 v]+ f9 f7 ?0 S& y- v3 c
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , z  `* {" ?* ~8 T
set global-reputation-list (replace-item j global-reputation-list new)
' U+ @. i" {# U& f4 `* Lset j (j + 1)
# `& v5 c1 {' E# t  K; Z2 i" n]
5 }- s  t0 l+ m% ^end; \: h# p7 p/ w
& i' h  l& i0 {
) g8 [2 J" T. J  o/ C( Q2 @3 v
) \) H$ J) }! ?, Y4 `
to get-color
4 e* `4 O2 {6 B
4 ?3 v5 z/ h; |set color blue
, ~) Z$ ]( k/ O  r2 h7 ]
end6 r; y, s$ v9 E6 l# m# E6 W1 ]; Y
/ q# t4 N9 q* ]
to poll-class
* n3 B: l- z+ t+ Send
, x4 ^  v1 D( {& o( D- c7 K/ c0 U/ Y/ Y
to setup-plot1
7 Y4 }/ s. d4 @2 ]; @
/ d5 [# f  D" q% z" e6 v- hset-current-plot "Trends-of-Local-reputation"
0 D* X1 I3 {$ b. Z0 Z& N
7 g- o' I, \6 {+ T3 A
set-plot-x-range 0 xmax
' r# V4 K7 n9 t) Z+ G; \  r
5 D5 g1 b  Z6 U+ ?" X: m
set-plot-y-range 0.0 ymax

" P# {, P8 e" A) s' Z" Vend" |% ]- x" }% ^: M: A7 i1 u

. @! ^6 C5 y3 F2 b0 G. i" I) Eto setup-plot21 s2 Q9 P& T% m: P7 n

  e+ W& V4 i5 p- Q( [set-current-plot "Trends-of-global-reputation"
) b/ g: M5 ~; E( J+ Z

& t$ {# j& H- T; Q2 \- Sset-plot-x-range 0 xmax
4 T( z/ m, g/ A4 ?/ t  D0 _8 i) c0 R

! Z- b4 B# D+ R/ ^4 lset-plot-y-range 0.0 ymax
4 w) F- M) |: Z# P
end) F. V) e" u7 C# @$ }% z- Y
8 ~- u. I# l6 X( Z$ K/ D
to setup-plot3$ Z5 ?  G$ K3 v* [

( ~# Z7 q+ ~4 x8 y$ v2 Xset-current-plot "Trends-of-credibility"
* c; \  t1 D9 ^6 r* j/ i3 O

4 ~9 S* A' \) {1 c; g! L- e8 zset-plot-x-range 0 xmax

* T8 R- \3 M: g$ Q4 ~, g: x4 ]. K8 \6 }
set-plot-y-range 0.0 ymax

7 a7 p4 \+ Q6 w) `0 s! Iend
- M( V/ ^$ m3 ~8 k4 C  Y  U6 p/ l; d1 q# ~
to do-plots
0 U8 f5 S1 m& \* y+ n! Nset-current-plot "Trends-of-Local-reputation"
( \+ x( c! o) u- C8 C# ^set-current-plot-pen "Honest service"
- {/ ]/ x) H9 R8 h$ e: W, s  _6 S" Dend
/ Q. j% O1 n7 g, ^) Y. V5 x* S$ T
9 M" e+ @5 v5 j[ 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.& Y7 M% D  o, Q
5 Q3 q9 }0 G' Y6 K4 T+ A
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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