设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 13641|回复: 10

[交流] 关于turtle的使用问题

  [复制链接]
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:0 H: h8 k4 @5 V: r" T
to do-business * |5 ]- k8 b6 [2 x9 w; f
rt random 360' h  M) |5 L# t: ~
fd 1
, N" s( N% Y6 p3 G- O0 t# M5 E ifelse(other turtles-here != nobody)[
1 k; c0 e3 o+ @   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.
# z+ d- _; r- d+ T4 E" u% i0 B   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' H7 D8 c; b) j; o
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 ]: z) ?, T1 R5 v' h9 |   set [trade-record-one-len] of self length [trade-record-one] of self( c  y5 m7 X- r1 n2 o1 f' j
   set trade-record-current( list (timer) (random money-upper-limit))! y+ d# o0 A" V+ z
6 ?! B4 }3 Z6 e
问题的提示如下:8 P  A- B7 {7 G7 z
4 l/ Y# v7 w1 L* A' W! ]
error while turtle 50 running OF in procedure DO-BUSINESS
! k/ @$ c5 o5 ?% F  called by procedure GO/ \4 F  y4 f2 I2 w) R( E
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 g  ^! t" c! P6 ]$ J6 R
(halted running of go)
6 ^* v' ^( u. K& L8 Y- W8 W0 ^5 j7 o, S+ [! S5 ~- h" N
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 G8 Y' F4 k1 J* k! t1 ?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.

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x

评分

参与人数 1仿真币 +30 +2 收起 理由
booblu + 30 + 2

查看全部评分

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
# c3 Y3 D; N4 H; m( X% uglobals[5 t/ {* K$ Y3 Y, I/ F
xmax  I) v0 N$ b& |* U5 F- p
ymax
% B0 {! Z9 v! H+ a3 o+ zglobal-reputation-list
$ E$ c$ B  S; E/ j2 F  M2 g/ g
& Q' P7 [! C& V' ]# W/ I$ [$ e; T;;
每一个turtle的全局声誉都存在此LIST2 g2 c1 l+ K, [; n4 H
credibility-list
, I. w  S3 G5 [0 A/ }5 P+ W& M$ E;;
每一个turtle的评价可信度
# M7 }6 W  r# R0 shonest-service1 d0 R1 n  h/ g3 D0 q* C0 n
unhonest-service5 X; x) w7 A6 C/ G1 {: q1 A7 ]1 t( x2 g
oscillation9 t: u( A* h2 {3 j# `' e, L
rand-dynamic
1 R& y) r0 a) N2 a, N4 `]# A- j* ]% q# \
1 r% I  Y5 Z( }4 F  {7 |. w
turtles-own[) ]2 n) L- x1 q7 \0 g* |
trade-record-all
4 S' {. S8 [" j, u$ }4 y5 {;;a list of lists,
trade-record-one组成# T9 A7 ]/ U) X5 v* e; K! ?
trade-record-one
% f' z9 m7 ~5 p- P$ T;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. X7 m# s3 A* X4 Q
* k# U2 U" E3 P. ]4 \7 \
;;[
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]], B+ M$ d' U5 W7 Y
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]
- K' t' c2 n* Q2 N5 Ucredibility-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
* C, J3 U/ I' o4 ~3 ]" Z  W5 Mneighbor-total2 \/ Q3 X  P3 E; w$ h( H) Y
;;
记录该turtle的邻居节点的数目8 F* c4 Q: E! e
trade-time
' q4 S, I2 I6 g' \3 L2 Y0 |8 L. E;;
当前发生交易的turtle的交易时间
. ?( X7 m+ r' c# C% @appraise-give9 O0 D5 |: k6 N5 Q. R
;;
当前发生交易时给出的评价
+ d- N/ J- }7 v. j1 Vappraise-receive: ]2 [. N" K0 Y. j5 e, X3 P5 S
;;
当前发生交易时收到的评价2 F7 r" ?! F% ]6 n# ^
appraise-time
8 d# W& h, y* t* ?4 W! ];;
当前发生交易时的评价时间) V1 }5 _; L% w* n
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ X/ Z1 K" ^/ P% r4 ltrade-times-total
2 b, N9 W) _( _" _" t;;
与当前turtle的交易总次数
* w8 k4 o& X4 N" }7 w9 n1 h" o/ s' ]8 Ytrade-money-total
5 E; S( W6 w& X! Q4 y6 G) O; q, j;;
与当前turtle的交易总金额
+ o& }6 k" z: l' i0 Z6 s  H+ V9 tlocal-reputation
- H: I% n1 b; S5 e6 J1 E# xglobal-reputation9 S6 p+ d# |) f0 c2 v3 W  @
credibility
/ u; A* \% C4 G;;
评价可信度,每次交易后都需要更新9 W7 Y( U1 c' p+ s
credibility-all( A2 f4 v4 |! ^2 x$ M4 F# [
;;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  m: i2 \4 m- z- ~# b

9 ?, s0 j, m; u' n" \;;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  v# t; c  G2 E' O$ C: v1 G
credibility-one
# f. y  u; `+ r2 H+ f3 E  {;;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* {$ ?3 `% R8 g( }+ r
global-proportion
: q4 r  T8 j1 G/ O* }customer% p+ M2 |& G# ~' ~
customer-no+ V  y* a0 k1 d% @- D
trust-ok
9 U4 e' h% W6 Etrade-record-one-len;;trade-record-one的长度
8 u+ m/ S. s$ p- W0 `# ~]7 L% B) M/ J$ e; D

$ Q7 U9 P+ h  i, y  Q4 v;;setup procedure! Y0 M! U1 h5 ]. Y4 }( B; [
0 E1 A& G4 p: P
to setup! \( Z/ R. q2 B! o
2 E4 {9 V9 Y  V; B4 _
ca
. p1 J1 k5 ~0 x: s6 c7 C0 m9 X

- m  u! n. a7 W. X& winitialize-settings

! T: I3 W2 I* W/ e2 c7 O% J' N, S3 Z' e8 n8 ?
crt people [setup-turtles]
# R* y* K3 x) v% F+ F( F
& k6 Y* `6 v8 r
reset-timer
  ?6 j3 _5 u" \$ D; S0 k+ m

! J4 w2 J* g! f8 ]poll-class
  X( t' s" ^/ r& y0 o2 e( S/ Y9 G
* E5 R+ z- D0 a( V
setup-plots

* b# Z8 ?6 N% L' y! G% @' A4 r
3 @4 x# C" c( _, y$ E' qdo-plots
3 q5 L8 x6 i' ~% D
end
* g( t: h) r/ r# q$ v, }3 j2 i
5 R7 {& q& o* {$ xto initialize-settings: z  ~9 B8 r3 y% ?+ l% a9 S' p
6 c( C8 P1 H3 G" W2 g+ G3 h
set global-reputation-list []
4 h% h6 _' L9 W

0 M% |; \" {9 h* l5 h1 Z- D/ s) vset credibility-list n-values people [0.5]

$ |: n7 [1 s; c2 M2 r' T2 W) j6 @# W; H5 E/ i
set honest-service 0

9 w% T# B' S+ m0 F  r( J, T# n$ D6 d/ |
set unhonest-service 0

8 d) @6 {' }2 T* b  |: u7 A: x/ e" a2 b
set oscillation 0
- X" }6 J5 ~% _/ c7 s! `2 ^
% G9 a) [! q& a3 E( U
set rand-dynamic 0
+ _# e& M, M! {9 A* m2 a
end
: J( [5 R) @# ?: F0 X' O5 L- W5 y! [* n* a. ~7 E5 e* T
to setup-turtles
3 a& }" Z! b5 a8 lset shape "person"# l1 }# ^9 M! Y* J; I& V: }3 K
setxy random-xcor random-ycor
4 d+ a( r; W) Kset trade-record-one []' g0 B+ C5 e1 x8 G5 e2 k$ @

: E% a% }, ^# q% O  i, O) aset trade-record-all n-values people [(list (? + 1) 0 0)]
5 s$ V) T; b4 J  W- W

" e7 F* P& r7 K: ^- ?6 l: Eset trade-record-current []
& z2 L/ r( W# y/ I: [, `$ q5 B; Nset credibility-receive []. T8 E2 ^2 d0 C* `7 Y$ N- Y* h
set local-reputation 0.5) j3 J1 Z* ?3 i
set neighbor-total 0
  W& x! R+ \6 @# d* E/ ~set trade-times-total 0& ]. b  o! }* V# \: }5 g4 A
set trade-money-total 0
8 i+ j1 S& Z" P! Dset customer nobody; }' Y6 o& h& `) R7 c4 y( g
set credibility-all n-values people [creat-credibility]" X& ~7 b& o! o- p4 y" j
set credibility n-values people [-1]
3 H& a* D6 _, n8 rget-color
5 ]! G  w9 _1 x' [8 t1 a) D- k. [
& j0 y( R# L. p  a( n
end
9 W+ e3 x- Y# E2 {3 h" l; O: e: V! B% C! x: Q8 y
to-report creat-credibility( W$ q  }! n  P* g3 V* q3 W+ L1 t
report n-values people [0.5]. {1 \1 d8 `$ X' @
end
, N5 h5 [7 J" U. u0 f7 g4 L/ i$ Z& _$ v& F" e$ D8 M, E$ x6 d
to setup-plots
) x3 R: S8 h& |, R
# l; Z* k( {1 l0 d9 b/ pset xmax 30

* w1 g& U% g& @! V) u; M- X' h3 B. e; D4 \) n1 M( }9 Z3 N  K/ H
set ymax 1.0

5 u- K5 p: h$ E% h3 X8 b$ C6 Y) E1 V' \$ L* j8 O
clear-all-plots
8 z2 k+ g$ `! B
7 ]: o3 m3 W# ~! ^8 Q9 d! n, A
setup-plot1

! K; U7 C0 Z8 s8 S! f
7 @8 V8 N- L( A" O: G7 b& usetup-plot2

! b, o) H2 @. q( ?7 t
: {2 M4 {* ~  F3 r" r, {setup-plot3
& O  K  Y5 [9 s/ M$ t; }$ ^
end# ?, Z! |/ v, K# [- a8 r# q% r# @

% A8 d- i( G2 ]7 ~. M' c6 s;;run time procedures9 z( T( Q" I, J7 Z' ]2 J* u

: h0 [) Z7 W& s/ v. Vto go
: T; W# I" U* o- ^5 y4 L
) t% W( J9 O* C: j# ?ask turtles [do-business]
2 g8 N- ?& L6 t( r4 A1 _8 u2 a+ K
end2 J' L! y1 H3 _3 ?; x; T* D

* |) r7 a3 Y4 zto do-business 9 j( V0 Y3 t+ e0 U  Q7 y. S5 Z, {: E
9 T" ?+ e8 i' G4 W& E% D; {0 _1 u
9 y0 ?, z! {: N: X
rt random 360

" _6 J. y  J5 B% T' N$ G7 x# A4 D$ p
% J! L- X: q; c; N( C  Kfd 1

2 ^7 u- A( G- S9 a3 i+ d
) Q# E! q, C. l9 Q, n% y  jifelse(other turtles-here != nobody)[

. u+ J- U4 m  g, h) n1 P1 S# g1 Q- V8 ~) {+ q
set customer one-of other turtles-here
. B. f8 s2 p6 e9 o0 a

2 V( v  e) c! X;; set [customer] of customer myself

8 A0 }( o) l& f' }) f+ F4 ^' u+ C: q( r1 B* P' E( w1 n( W. m& W! p1 ^
set [trade-record-one] of self item (([who] of customer) - 1)8 }( @' z* m+ }7 s
[trade-record-all]of self
1 I  g) a' [0 E;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 f! h/ w* ?: b5 T& w, B8 G4 t. ~4 G- A- M5 m& z5 W! r, Z
set [trade-record-one] of customer item (([who] of self) - 1)
" N4 ?2 O# [8 Q9 P' O[trade-record-all]of customer

  i6 H; r) V) g; i: S2 ~6 o4 Q! \0 F7 c
set [trade-record-one-len] of self length [trade-record-one] of self
- E, O# ]- |: W0 t* p  y0 D' L4 |0 f
0 o" C5 ]& Z( ^- z% S
set trade-record-current( list (timer) (random money-upper-limit))

2 A4 i& S7 Q' D( w
/ ~* }$ f4 @: M( j/ iask self [do-trust]0 B) d6 _. @- ?4 Z1 n# Z) R
;;
先求ij的信任度
' A% ]- c% |) w4 v9 |6 A) f% v4 |
( O9 H  I5 `  w- ^6 \( r3 J# Zif ([trust-ok] of self)( P1 ^" ^3 v6 ^" W6 w& P5 D
;;
根据ij的信任度来决定是否与j进行交易[
( x' O) c/ I7 c* wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 s) s* {; e/ s: [$ |6 M
  b/ M: {' t$ J( r7 a- l[
$ [  c# E% X5 g; \' C, T# X7 }4 a6 D* \
7 N) J/ k8 w. j0 t9 f+ B* X
do-trade
, H, L" h- d- v- _+ n- ~

4 N1 Y" \6 C9 Y2 @update-credibility-ijl
8 U* L5 r: Q% z

: w# p  G) Y3 z. pupdate-credibility-list0 @7 d$ R: ^3 p0 b% j; D2 e! j
& g! B  w, v* o, U5 @1 y
0 w0 ~+ Y  M" t. ^$ O
update-global-reputation-list
2 m3 I5 {; z* F) Q# e
2 O& H2 V4 W) D& }+ ]2 s3 G5 M
poll-class
% q$ k% V) U( u, y4 o& ~. B8 a
, H* G+ f) n& B! ?  u
get-color

+ ^& Z8 |# u( p% ~* Q
3 u9 ]2 I7 t. e5 C1 C]]
" O" v8 [# f7 E2 H2 N9 X. K+ @& k4 k0 F3 p; Q5 m; y& Y
;;
如果所得的信任度满足条件,则进行交易+ K/ [: _: ^$ L- _% o/ Q# O

% x# r( I5 \; F* y3 [" ?0 O[

" X5 q, N! H3 l, Q' L+ d+ i$ S1 J. u% N4 R; E1 ]/ J6 ]4 n5 \3 m0 o5 i
rt random 360
3 C0 K( R2 k$ t( {* ]; L

9 K0 Y' a, ~4 W  U0 u3 tfd 1
$ U0 P$ z( s6 T6 q' a3 Y7 C1 `/ n

$ T- `' g3 B8 I/ K8 P3 Z]

. N1 O5 M! Y8 p9 o
$ u- d0 w, _# ~1 X5 B  Dend
3 [* m- C) c% Y9 [, j8 a0 J

" A. |4 |" Q% r* C( r; Yto do-trust 2 f) n6 A3 C. T5 ?. a8 ^: U/ y
set trust-ok False
$ M# M/ T; [: {2 h" ^4 [3 U
3 e& e$ ?8 ~+ b6 B& ?

4 H% b8 m; W& n1 J( o! H* Olet max-trade-times 0" r, e/ K+ B+ q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- e# G7 _: x/ T* a
let max-trade-money 0
3 n: N% }" W. V0 mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% H- B" a6 U) v5 Z& V* }
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# H, Q- [0 [7 h
# G& p" h5 ]6 s7 H) h& U$ V

5 o% W# p9 W! Pget-global-proportion  r# _) Y+ Z9 C- D% W1 I0 o
let trust-value% j+ E: d6 y  b  B7 T
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 C* h# a) n& p! I7 U/ g! e; ^
if(trust-value > trade-trust-value): S" f' X4 Y, `) O* [1 S/ B+ B
[set trust-ok true]
) L' [1 S; I8 g" Cend. @" C; C0 I: [$ v) v+ ^

9 T, w0 A$ j3 b( Y( @9 c5 U8 \to get-global-proportion
( u5 |! d# a' e6 f. nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ L% s4 n' j! g; Z' A! Z; F[set global-proportion 0]
2 j, v( |- w* ]8 ?: Y; X) A[let i 0
5 d: l& t$ @8 V8 O* m6 q$ s2 h; Ylet sum-money 0% n. \4 M, `1 E$ a# w3 a
while[ i < people]) |1 p' k; s  B6 j
[
# u8 F/ j- k/ o3 z0 ~+ hif( length (item i
2 a0 G1 m) {) ?4 X2 l0 U( M[trade-record-all] of customer) > 3 )
9 x# G/ I! d. Z2 \1 G' z
[* |3 O9 q! T9 J' L
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) s/ v7 i8 f2 z
]
" B% }8 j' @" v- |% R" G$ J2 k6 M]
' w6 I, u. v" H$ u! rlet j 0
: n: T; R( S/ `' o3 B! ?; ?let note 0! ^6 ?# I+ L6 w
while[ j < people]% w% [& g: |: Z5 s! _2 _
[
6 Q8 I3 J  e" Q' w) G! _if( length (item i4 o2 p  J& E" |/ Y4 c
[trade-record-all] of customer) > 3 )
& |/ N2 D' L# D" _$ r
[& q4 S! l- P5 y9 P! c. H
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; {" h+ U0 ?+ R[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 I' U7 Z0 p4 a- ~[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. L5 v# C: S8 I* O
]
6 y7 Z0 z: B5 ^. w0 J$ O+ r]
" ]( k, ^. I4 ?' O. J. v  h3 v5 q9 Lset global-proportion note
0 c; u' C# F% y6 P" w: T]1 `* M5 s" n  i0 l
end5 V- \4 ]7 h% t( j( k' v3 v# q1 k

" Y9 A; [2 A2 Uto do-trade
9 Q6 e5 u& I# Z8 J% |;;
这个过程实际上是给双方作出评价的过程- s6 e5 T7 l2 t. d) E) l. |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, M$ j$ S) O9 a+ U4 `) y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* @  f7 U/ ~" q2 G
set trade-record-current lput(timer) trade-record-current- W! q& u+ Z1 z
;;
评价时间
& i- w# ^# I* Iask myself [" t0 M$ ]& l% `3 w3 B/ \
update-local-reputation* v0 `! _$ w1 V) I: ]; c9 ]0 D- c& i
set trade-record-current lput([local-reputation] of myself) trade-record-current
- Y" Z- g- b; P, x0 I" C]
8 l+ L: D! e4 L' t! o$ S7 Gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; l4 {" @$ d  l3 M;;
将此次交易的记录加入到trade-record-one8 A6 y# Q% {5 m2 ]: l
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 A1 i  f) @5 C, B: plet note (item 2 trade-record-current )
! e9 |3 L, _: w+ rset trade-record-current$ d9 y1 Q# A) E( A% x
(replace-item 2 trade-record-current (item 3 trade-record-current))
4 K0 V8 ]) ]/ [# T. q, W* e
set trade-record-current3 u/ L4 T7 ?- U
(replace-item 3 trade-record-current note)
; X9 l1 T5 D. x$ z- T% P3 g( v$ w$ ^3 r0 Y. J. n) Q

, K& h3 S2 E% Z% `ask customer [
; D1 z. j- S' n$ ~" H/ e! gupdate-local-reputation
; T) E0 ^4 [3 T; @set trade-record-current
" K% e3 h; r: M. j4 ^(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 P# P% Y: v" T0 m& S]
, d! D6 v% q: D
  ^- z/ V% ~' L4 _3 u7 C, P; U

# V, U8 @8 z6 Y; K! T7 V! Qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: O. m$ c( _+ b$ B2 z
$ `. y" M0 M7 O- X- f7 [) [
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' C: \$ [) U# y8 ^- o
;;
将此次交易的记录加入到customertrade-record-all
( R3 ?9 p% G5 y- m, fend4 p" [7 r. Z7 o8 K3 k3 L

: e8 m; u+ F5 B2 d' p5 Fto update-local-reputation
3 A3 _  T! i/ I, a* `set [trade-record-one-len] of myself length [trade-record-one] of myself
2 k4 T/ d  Z* C1 p- B4 }3 O' s8 n) `1 [. U  N
1 i; e! u7 M6 x- B- h
;;if [trade-record-one-len] of myself > 3
1 `% X4 ^0 @6 e; c, X$ u
update-neighbor-total
& y; {) U4 y7 ?5 }7 z$ d;;
更新邻居节点的数目,在此进行) f9 M! i* @3 J+ H, L0 n
let i 3
+ R& I3 h7 }; `$ T, Llet sum-time 02 G& y, Y, U8 {5 w
while[i < [trade-record-one-len] of myself]
3 X# W& k) ]# x[
3 P# [  |* `) r( O* r9 Zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), H3 o. E! y" h9 R! W4 s
set i3 H, M) g& h9 [$ V( b8 ]7 H
( i + 1)
+ k; {$ f* x% d  b) e5 B
]
) Y2 D! A6 t9 j! X* W/ ilet j 3, @, h$ D' I" U; M  }. u. n& O
let sum-money 0( U7 J. Q9 q& }/ _' d& `* V& {
while[j < [trade-record-one-len] of myself]6 p( l# S) @3 A9 G; ~$ [
[
( O# J; e1 S3 h7 _  tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time), h" X" e6 i. ^8 I
set j* i+ {( \$ W8 z0 `3 [/ Y5 m5 t- d% A
( j + 1)

( s) s9 s$ u1 t3 K& N]/ V. J  o8 h+ V9 L" [
let k 3! Y% O* v3 f) ^$ a
let power 0. j. h* Y7 W. B( F
let local 01 U  M# F/ ^; r0 d
while [k <[trade-record-one-len] of myself]: Y( q" E* z8 L% ~
[
; [/ s9 X8 ]* Jset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) 5 l7 }: @4 n7 @9 E7 y! o9 Y0 G& t
set k (k + 1)
+ b. K" W9 l: M+ N% F4 Y]
% n; B( i' ]$ m# i8 n2 r" ?/ a- }( Sset [local-reputation] of myself (local)
! Z* f: m6 V8 {5 @end( D: [6 a$ Y1 q2 U  P- m. w

  @0 V) I% S. J  }1 @2 `to update-neighbor-total
0 n, d+ T- Y5 M' _; H7 ~: r7 b  c
4 y9 ~, O( h" u" q8 u, N" |- cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 S- v# T5 _" J) M* C  O9 @
" R; w+ m7 }2 Y& m' f+ p

% Z5 M( I$ \3 K  hend
  b) G' J1 c7 {- @: ^6 u- v
* Y9 T4 Z) A$ W1 P  uto update-credibility-ijl 6 V  M, E. u; [4 R

9 H6 [+ H9 i: M3 R) P! |;;
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。
5 }1 g" I* q! u2 u& R- P! Ulet l 0
& Z) n: B& [' `while[ l < people ]$ k3 `1 l5 t) p
;;
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; t1 i1 G4 w" d6 u
[5 p+ b# |" z& s
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  ^; e" A4 a* D# u* ?if (trade-record-one-j-l-len > 3)  _4 V7 M2 N2 y6 Q2 C
[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
) J  ^& D$ S& i& u1 p/ hlet i 3) h5 r  A. ^" d( N+ y5 F# [0 q, f# m
let sum-time 0+ L" ~& W0 l- f" T, W( q% W) s
while[i < trade-record-one-len]
! O( Y0 S* v$ c7 c: p1 F3 ~[
7 C% x9 o: c' lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 p8 y$ q6 G( Z9 Qset i
/ {" c* c/ E( c3 k6 J7 E( i + 1)
3 e+ c& \+ U  f; X
], ^2 w$ O* g" x; F: l$ k( x
let credibility-i-j-l 0
& |* z) z: A1 b;;i
评价(jjl的评价)# j/ \6 Q. t9 m
let j 39 r5 C7 n# z$ j) ^) M2 p% E- T
let k 4
$ [" |& c& L4 G8 i0 pwhile[j < trade-record-one-len]
1 x4 _: {) a( X) `/ n+ F$ j4 j[
" Z9 I7 a, S) R) e: i1 U8 G, P* D/ \2 Iwhile [((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
. ~8 a  x/ e" [% zset 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 ]+ R5 L* }6 k8 ~1 R% yset j
) l! E" K# v' F( j + 1)
& M" b  {3 x/ c  u
]/ ]+ _4 E9 Q( A- }
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 ))
) P) |0 R# ]/ `1 c5 ]& n
4 u; r: Q9 J5 ^4 S& q3 e. t
7 l3 R% ]8 U5 z: p5 G
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# O, {1 o7 W8 g& Z7 [;;
及时更新il的评价质量的评价. Z3 Z6 j: k! _4 Y8 S
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ a5 D2 F$ T! ^% G( \! l# z7 iset l (l + 1)2 v9 b/ J( b' F* Q2 J2 E' _
]# U  s" u$ E/ C7 U0 I& A- p: Z
end
7 e, N* H7 ]) l# V5 b$ F
, b7 M- _0 j! Y6 J- o7 }: m- ?, @1 X: ato update-credibility-list% o" y  {0 O, T( {  o
let i 0$ |! p" F/ ~& C" u
while[i < people]  K* u) R" C0 J, z
[
% x7 A$ v6 N/ zlet j 0
' S5 e* v% Q% U6 C; K! ~let note 0
) `& Q% A: O" I6 d3 x( e9 Vlet k 0' h# }8 ^/ K, t( {
;;
计作出过评价的邻居节点的数目4 N* |& c9 s* q: }$ M/ g, S/ C
while[j < people]/ y8 O% x3 _7 Y4 k4 ?9 h$ s; M5 g
[
6 ^! t5 z6 F4 w2 T! {5 g& eif (item j( [credibility] of turtle (i + 1)) != -1)% u" h3 P% f3 S
;;
判断是否给本turtle的评价质量做出过评价的节点
8 `: y: p$ W6 v) e& s* F, ^[set note (note + item j ([credibility]of turtle (i + 1)))' m% k' d: R+ O7 P- i
;;*(exp (-(people - 2)))/(people - 2))]

2 j0 K1 B1 F( I1 _set k (k + 1)  M( v' E! z- ~7 |
]( T& [8 N  M& x" m3 `2 W0 y
set j (j + 1)0 V) [' x9 x! A& X8 k7 h: h, R
]
+ H2 G" U. }7 |3 `# C5 Cset note (note *(exp (- (1 / k)))/ k)
8 `' y5 u" K6 R( g) b  ^; B2 V" c* |set credibility-list (replace-item i credibility-list note)
, u' @7 [8 p3 X% E0 j5 o% w8 wset i (i + 1)8 w, Z0 D' ^% }3 _" |  F! H
]
# K- _" u2 F8 f# J% Z7 j. o* ]end
' N5 W9 r' Z/ _+ e0 i& {- x4 C4 \$ t
to update-global-reputation-list9 r* V3 ~. @$ o; w1 @# U
let j 0
7 f+ b) g  o8 Fwhile[j < people]1 D5 G3 H. n& j6 n# T% u3 B
[7 Z" B6 u$ c) E) e* c: B
let new 0. Y: L" I  L8 D& v! ^% R
;;
暂存新的一个全局声誉; S# P6 M9 a. Y) f  z0 V( Z2 p
let i 0" [' s7 K- O2 S. G) I1 @2 d& x
let sum-money 06 Z2 C- R4 h. |, g* [
let credibility-money 00 H6 X5 ~. Y9 f4 B: M5 ?: p2 ~  t5 z
while [i < people]1 C& o* E% k; C  {! |$ m, [# t$ z
[
; t# v( @, {, n7 X- Q8 ?set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! J# J3 ^) L; G8 g8 n
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))  e2 ^6 \$ _# u/ D) O+ h
set i (i + 1)  Z2 A9 k/ d% X  A( s
]
# W9 y; A( s9 m* y! S# ]let k 0
7 T$ ?. [& B% D( }. Blet new1 0, h7 Z3 c5 x7 O& f6 ~( f+ A
while [k < people]$ N0 t/ X4 b4 k% h
[
1 r* z" {3 G9 }0 d& q9 ~( h5 bset 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)( a4 c$ }( J  Z  K. y1 w: X& {
set k (k + 1)
# y3 c( {2 H) X* c' ?' D% c]. U- |6 E: |: R) |6 j0 @
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! I. i; X& U% p' V/ r4 J3 ?
set global-reputation-list (replace-item j global-reputation-list new). T. k  l8 R1 e2 P  l
set j (j + 1)
5 L6 x/ A# e* D. V4 `]
( v  i: T# |# a. [: Gend
3 \$ w- J5 e5 F0 w7 n' _# B8 S1 B( R% V' n& o- {4 O
. d! {% Y0 G$ [- G: i# M
* i' o1 }7 R. L9 M8 c" ?
to get-color
/ q2 v2 i  L% J% }$ U. n+ l3 B
! o0 E# R0 B3 x" W: t9 s. R" ~( Yset color blue
. N$ o! N. C( @* M& ~4 w4 _+ j/ L2 V
end+ {& _7 ~4 U7 c
3 J9 A% h1 m& z% E8 x- g7 f1 ~# V
to poll-class
) ?; c) e+ Y/ q& t8 w0 p, @7 aend2 p% D, v: j1 W# d+ |6 a1 V/ X

  c5 D5 ~& U3 W5 |8 fto setup-plot18 y& R2 l$ l& y5 a( g" |; ?

1 h8 h1 F7 g( I; n& t8 S) sset-current-plot "Trends-of-Local-reputation"
" b# g6 w# L4 v2 _1 l( n

" L; A% g' L- R* {: o6 r! Eset-plot-x-range 0 xmax
- ]8 S2 n% }# T$ Z9 C6 u

; `; L" S, b' J4 S2 [  yset-plot-y-range 0.0 ymax
  Z- p) C, S! S  v2 `" }7 k
end' C, `7 x/ b. E6 V
+ b% B" i2 u# e
to setup-plot2
( b5 r- B4 M8 i6 V1 i8 L3 G/ I- G' R- [5 J5 M) ]+ z) r# v
set-current-plot "Trends-of-global-reputation"
$ |9 r- T8 c3 j+ U9 G1 t

9 W: V5 R9 {( i! T% j& N: {set-plot-x-range 0 xmax
- Y4 C' ~# T9 P3 I

6 D9 \( }' q0 c) wset-plot-y-range 0.0 ymax

. g& }7 B$ \& r. w% x& B$ kend
0 w* f% D$ V: V$ ?2 W
; X6 B- Y$ E1 d+ F' s" z  E1 {, Gto setup-plot3
* c) [2 ?" b/ g$ y2 Q, g# b6 K7 T- W% J5 N5 \$ s- s( M& c
set-current-plot "Trends-of-credibility"

; `/ A8 ]3 _' z. F9 z# q& c$ f+ q
set-plot-x-range 0 xmax
& z) V7 F) U2 i0 h- m3 s8 h

( S9 O. a' m! d7 gset-plot-y-range 0.0 ymax
: p) E1 j9 }& z0 W
end
( ?$ J* M% n2 h: m" t0 x$ r) W+ A9 x, ]( r8 E: I0 r
to do-plots
2 r- R3 m9 V; Vset-current-plot "Trends-of-Local-reputation"
9 y( F& a8 Z6 Z6 ~8 lset-current-plot-pen "Honest service"
" \2 O8 ?0 l" `2 m) Q  vend9 |4 u% r4 S6 j
  m9 X! |+ R% w! }' V; x
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x
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 k& z/ r" A+ A4 X* I
+ r, D  U) q# T, H9 h
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?
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-4-13 12:38 , Processed in 0.024177 second(s), 18 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表