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: 10417|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:5 N& x$ |' U/ u; t: u4 {$ P
to do-business $ Q" q0 D0 h& H' B# |
rt random 360
  l" e) _3 {2 A3 u: Y; H fd 1
: @7 H3 P# p* l$ p ifelse(other turtles-here != nobody)[+ D4 L; g4 z* Q6 T0 ^9 E  q- n
   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.
; O3 j# {$ y& g% A( Y# H. O  |   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! N; _+ v: ^; z$ U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ a8 x) }( A1 V7 e8 {
   set [trade-record-one-len] of self length [trade-record-one] of self) u+ H4 z+ }  B) _. ?2 j
   set trade-record-current( list (timer) (random money-upper-limit))
3 r3 I8 K; k( u* P3 X' b$ b, w
! r+ ]$ z. \# K/ q8 r& u: a问题的提示如下:
# p$ G4 ^. U0 d0 N7 r2 m! t1 A6 L9 r
error while turtle 50 running OF in procedure DO-BUSINESS* T* f' U- x6 k! j- o& |9 v& ?
  called by procedure GO
! g( I7 i% t) _( _3 Q- X8 K) xOF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 Y8 b! n& a( N9 J# E6 V
(halted running of go)
, F1 ~+ Q. i8 i  Y) ~
* O# O+ w2 O8 G# w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~~
9 O9 n3 U- L# f7 t; e; {, C8 p* K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
4 U" Z! `3 ~( C  Vglobals[
4 d- i9 @4 v4 d  C' I0 f! G8 Rxmax- `- Y: \3 j5 P% f7 J
ymax
! l5 L9 k8 p0 ?0 i+ o8 Bglobal-reputation-list
# s2 {2 x8 C, F, T3 I4 E+ Q8 ~
, d% G" d! R4 V8 `; p;;
每一个turtle的全局声誉都存在此LIST1 C! P% b% B' {3 `; I/ ]$ _
credibility-list; h0 e5 Z( p2 ~# ?& u6 Z) u
;;
每一个turtle的评价可信度
- V7 x6 _& M1 Hhonest-service4 e) Y  Q3 f$ ?% [: v
unhonest-service4 J# u5 i7 F; {( l) D. E
oscillation* Q& F+ J5 [; m% X# ~/ ^& C& B
rand-dynamic% f; l& R3 a* E8 o
]3 a. m6 b$ V- d1 {" c

1 o$ Q1 G( }" oturtles-own[: G( s- c& T/ s# d1 I3 D( `
trade-record-all
! |/ p) B  Q: m+ d4 s1 {# q;;a list of lists,
trade-record-one组成$ S0 [4 |  j- [
trade-record-one
* ~( s/ e) V' A/ n7 R; m" H8 Y  C5 l;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- E! B1 p: s8 T5 w/ L. t
# d- O$ N! T* H1 N# r+ G" Y# |
;;[
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]]' }' S9 d- Q. _/ d1 K' _
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]6 q# \- S' U6 [* [
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
5 t  A7 v9 c5 a  ~$ b: dneighbor-total3 i9 L! m1 [$ x7 l
;;
记录该turtle的邻居节点的数目- U/ t1 C, X! j7 _8 ~# a
trade-time5 g: d! q2 |% V/ X
;;
当前发生交易的turtle的交易时间
' T) [1 |8 z( I& i) _# j/ @appraise-give
$ U2 R4 ~# v" B5 T: U;;
当前发生交易时给出的评价4 B+ c* J8 e' C' {
appraise-receive' v. n9 @0 s! G& S6 ~3 ?- J
;;
当前发生交易时收到的评价) Z5 ^" l. M8 \0 V; ~% M7 @( W0 m% d
appraise-time
4 ]' C- y& b' W;;
当前发生交易时的评价时间
* i2 ?( v1 E8 mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 T# W/ B* j5 ?# `trade-times-total% ^) }' I' \: K6 i! r! {
;;
与当前turtle的交易总次数
0 D5 N1 ]  y% {trade-money-total( U9 k( W6 k% V
;;
与当前turtle的交易总金额
. B/ T0 ]; W$ rlocal-reputation0 M+ m. e- W( ~
global-reputation
- _) ]6 g3 B0 B/ Pcredibility) D" L# D% [6 g
;;
评价可信度,每次交易后都需要更新% C9 `8 w9 P8 Y* y! l
credibility-all; r, F8 i$ v8 w0 @4 s, l
;;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* t" c4 p1 ~2 G7 h! E8 f

2 J- q/ {% j& @7 c, ^! B* 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0.59 N* H8 {2 [! T3 m2 o8 v
credibility-one
. R5 a3 K; @3 ?; C5 _2 k4 y& T;;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 ?+ V; A( @% u+ n! t9 _3 `6 a, kglobal-proportion
2 B; ~7 w) l- I; W- v: Rcustomer* Q. R+ z# F/ D9 R: Z" w
customer-no) _6 ~" B) n% r6 w0 e* u
trust-ok4 X, ~5 w/ d6 r5 m5 u/ d
trade-record-one-len;;trade-record-one的长度
5 ^& Y# t2 @" {]( Z) c# F$ M) b% r- `
8 |5 K/ y; j, w
;;setup procedure; q4 n. y, ~: G8 M' O1 C
) D+ c$ K5 L% ^3 j; U) \9 E7 [- E
to setup( E( D" a5 u9 B- q5 n2 `3 r
# Z) V- p/ U$ e- Y$ K, ^
ca

  w& n" G+ t# w( d3 s/ }
% u: i; J* w- H! J5 J6 einitialize-settings
- Z+ h& C0 F# q# V/ o  t1 I& P
; @) K$ h# }) e* t8 D; y
crt people [setup-turtles]
' T. J. C8 \8 _( I# ^
/ R3 N3 Y' Q0 K2 Y
reset-timer

0 c. |: D5 F- x6 a' X0 X  X# v) I3 @& u3 i0 K2 V1 Q2 F
poll-class

9 X# x8 h" f5 R6 p" `; q3 s& J/ a6 d! k9 ?! p+ i- s" v
setup-plots

  Y$ F0 F+ ~0 h" Z
/ l: }( k# i( I1 Y+ sdo-plots

' I& R7 I) ~, c4 R: a( v/ jend1 {( K9 {/ e+ M/ ]

6 X( r$ b* q' {) |1 Kto initialize-settings
9 M6 i; _' t/ U! A" }  i7 @1 E) {0 m4 E; U) g& H
set global-reputation-list []
' Y# v3 E1 ~2 G( g; I

- q$ e& [" L/ m  }* m, Mset credibility-list n-values people [0.5]

4 F/ s; _% v( L7 L9 M# q
! A" w! }2 X' j) q1 k7 W; Sset honest-service 0
. R$ a' X1 S9 p9 ?. Q
; I4 A0 A7 I; v) \# U* Z( h
set unhonest-service 0
9 T3 i; f9 Z: G- v; w0 T1 _3 E( j

/ W! M2 N0 t/ H# t9 Hset oscillation 0

6 T! D9 }6 o  N7 J6 ^
! z, x! ^' ~4 k6 N6 Vset rand-dynamic 0
/ `# N% I0 Y$ C* J$ v  k
end0 P5 J" Z5 O/ h( e7 i& [3 K
; ?( l9 W! J7 ~% o
to setup-turtles # f: D: a0 J5 D  c1 `) p& P
set shape "person"
& J# n/ O8 [. L3 |0 Dsetxy random-xcor random-ycor' P1 J0 L2 L8 ^1 Y: M6 T. b& x
set trade-record-one []. u! h  e, G4 r1 q

! M$ m6 w$ l$ {set trade-record-all n-values people [(list (? + 1) 0 0)]
+ H0 y% A1 K. Z) b8 g4 S8 T

2 K& h+ d9 Y- r8 [& e3 R6 z' n! @. Pset trade-record-current []
" R/ j: S( b2 z. sset credibility-receive []
, U- ]; o( @& b; Q1 o5 Q! P; qset local-reputation 0.5
0 E9 i5 ^  ]4 L( w( |( F0 }set neighbor-total 0& J$ ~7 v! w& f6 {
set trade-times-total 0
2 G! P# u1 r8 z6 D" r9 M( ~7 uset trade-money-total 0$ M+ d6 j0 K) g- C8 f% Q+ f' J# [1 A
set customer nobody
8 ]  C% I: d6 I' kset credibility-all n-values people [creat-credibility]
9 l7 R9 G! \3 s# m& `set credibility n-values people [-1]1 D1 d. A) Y: |  w% T+ h
get-color
( p( R2 W" D0 w4 n# H3 n8 l
8 v/ J- m; ]( u2 Z  z3 \) k
end- I5 _# T" t" D) Y' e* ?. D" F

2 {. j/ c* C( x' C7 H: ~( R8 sto-report creat-credibility
( L" `* A/ n/ n- freport n-values people [0.5]/ D! ~9 \7 y; A. L4 w& @- Y0 V( {
end9 `" q  `- o, Q* n! a

! ~, m- ?1 g. c  Gto setup-plots
# d% f+ O/ ]) z# i3 F0 z$ _( m7 b. D% n
set xmax 30

0 p( G  v5 F0 L4 A  A% U
1 z7 M% S; @6 M* Vset ymax 1.0

- w4 c  @! X  {8 N0 V; ~4 V. B: b9 m# I- }- K6 r
clear-all-plots

3 M9 S6 c& f+ ]/ r- O  L
( R+ s. \$ q* Y6 dsetup-plot1
  c3 J# z3 R0 N/ V3 B' b* U7 ?* u. p
3 b' f0 r6 M0 j- b
setup-plot2
+ n+ Q. R9 j  Y& W% n. x. [6 O
9 y+ |9 S* T; M& c7 @% h) p1 ]) x
setup-plot3
. v! |) d$ h  n% _. g
end
# M9 j7 |7 d8 S4 s1 w
5 I$ F! A" y3 l;;run time procedures5 G4 ^2 f$ K1 I1 F3 a

% }3 l) s5 n7 ~to go7 c" J) f% `) c5 D  l
9 a; V, |% A$ c% k0 ^+ w% Y+ J
ask turtles [do-business]
7 j/ Z& q3 K% G
end
' N0 h. M% j# {0 X3 Y- U3 N, H
; k+ a) o0 Z# |) c$ x' \to do-business & A# X. b. H# P6 j  Z
2 _; E' ^8 g3 J8 y
0 V( K; `' P0 |, X6 E7 Q& w
rt random 360
" S- @3 y$ Y2 u( q2 X- R, S
5 P# s- E3 G! R5 w% C1 L) e
fd 1
6 _" V! y0 W7 o9 r  l4 M* Q
% D, U' B# b' `; h/ r
ifelse(other turtles-here != nobody)[

9 y3 m( P% h4 Y+ r6 n
) H; l+ T$ v6 k6 g/ y" U/ jset customer one-of other turtles-here
3 A2 W/ }! f  h/ A  Q( Y

0 t6 U% E) w2 e;; set [customer] of customer myself
# Z8 L8 [  C2 b* I5 X

- U3 Z/ x7 k* [set [trade-record-one] of self item (([who] of customer) - 1)& `& n( x4 @% N
[trade-record-all]of self: t+ N- F% Z7 D; ^9 h
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 N! U3 ^* B2 x. V( {8 u, u% E; }

* c7 K% M' |+ R* Pset [trade-record-one] of customer item (([who] of self) - 1)/ F$ V  H/ Z9 b$ G3 N4 n
[trade-record-all]of customer
) V/ I+ M4 T$ y5 ^$ [
) @; q' G! O4 k! _/ b; o% T2 Y' X
set [trade-record-one-len] of self length [trade-record-one] of self
- ^' _$ V. U* T1 i. s$ [+ S
2 L" N7 b6 V' [( q7 C8 z
set trade-record-current( list (timer) (random money-upper-limit))

& ~# X+ v+ ^8 B6 _7 \' G8 |
/ i$ d# d0 Q" s8 z! Lask self [do-trust]
# b" c: |/ u$ \  t9 V2 |;;
先求ij的信任度% r: h+ m1 h1 n0 ]0 K2 T: X% \
: c7 p; \5 \$ _% ?
if ([trust-ok] of self)
7 l: j8 q6 d# R" \;;
根据ij的信任度来决定是否与j进行交易[( q+ G& j" I" u3 c" v' G
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: L# F9 {; R* Z3 b

, _  _% n# I" C, Z2 }2 G[
% n* e$ u. `; G/ ^1 G
7 |# y' h& l% ~% j
do-trade
3 X  L! t9 g6 u$ H' N
! f& u3 ?0 L4 j) w; R; a# W) \
update-credibility-ijl
! {  U( a, ^! a
! N" A8 c$ u0 E8 n( g
update-credibility-list
3 [7 U  O# w0 I

( z% N) I8 U9 C8 t( _+ X
/ X- D- I# e( {2 Supdate-global-reputation-list

0 `* _# q. K& F7 f, D" S% B$ A0 G7 q4 |$ [* R1 l. Q
poll-class

/ G( y$ k* ]8 J3 d, \" N; |* @9 ]% [( D
get-color
* l0 x" ~2 G% O" |
; D" a6 T2 p/ l" v1 j
]]
' C7 P  G: F" p9 \9 }
! x- R! u4 ^$ T+ c8 X3 D% ?;;
如果所得的信任度满足条件,则进行交易
* {2 I  k2 I0 I3 E7 C" M) {5 b3 _' w+ u0 x2 l% R
[
7 _- o9 Q5 c0 ?/ R, e: t

0 s9 d; q4 h( C3 t! Zrt random 360

4 f- s9 a7 F( q6 _" ]
; d) E+ Z* o9 R8 d: v% n: J4 B5 q9 Hfd 1

+ F: M! M5 K/ w# H
/ |6 Y% g# Y4 d" ?0 Y% z: q]

/ x' {: R0 H6 d) V1 |+ y6 ]$ J- ^1 H# @$ }9 r. o
end

% E5 h$ u; w. `, Q6 g: r: ~, b) S5 U# l0 E5 K' [3 m
to do-trust 2 X& b  w/ C( u6 A5 }
set trust-ok False
% ^- r+ l& N+ o  X. b- W+ K" M# Y5 h& T
6 U0 W  Y) l0 ?1 P2 r
let max-trade-times 0
2 @# l$ f, v" kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ [2 O3 g/ g8 I( n: Flet max-trade-money 0! H5 h& }% u: L; L/ j0 G, X, Z2 j
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" I' a  |. k* I9 c% B
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  j, F4 M; n9 M# J7 w; V4 e3 k+ Y% ^# c5 ~5 z
( O# H1 O7 q" H8 T. Q! A4 H+ a
get-global-proportion
% l+ r- l5 F8 @3 |- w  D# slet trust-value5 A  P! Q' @  |4 u
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 E/ [  q' i: W' _* c+ z0 a
if(trust-value > trade-trust-value)
. f5 e2 [% s' s( ?5 i  B; b1 C[set trust-ok true]
  q/ g6 a3 ^; F5 b' m9 H. E0 Wend
& L* T- G) n" r( f
- z- S  J, L8 F2 vto get-global-proportion
! ?6 {* u! A4 ]( P9 yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 o, o" `! d5 _& r7 m6 C8 Z- C
[set global-proportion 0]
8 h2 k8 P7 ]$ a[let i 0
$ ^9 Z/ v% |3 |2 Ulet sum-money 0
$ p' D( u& _, ~4 t3 F, Xwhile[ i < people]3 E) Z9 B. U" f: B5 g8 x
[* }3 {% m" U1 D8 k
if( length (item i
2 K) R! |4 q6 T4 D, _4 C[trade-record-all] of customer) > 3 )

7 K! @9 \" @1 q. \[7 I$ i% H. b# s3 D0 h0 Z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 Z0 d% x7 S# t4 G  o* z
]
. x: y2 \; T  c]
! w$ |7 L! w" t3 J0 a- p# H) k$ zlet j 0
2 H1 A! y2 V/ |let note 0
* t" k8 G) ]) i3 e; I- R" _while[ j < people]
; k2 x& S' n! Z. p[* r! @, e! |* L% z6 k5 z
if( length (item i
4 M) i6 k; Q( O: o; S- K, S/ w3 T[trade-record-all] of customer) > 3 )

4 W3 N/ v8 g/ m[% D5 f+ K  S; z6 |8 ]9 {/ o
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) P  d: _- B! H2 B6 A[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 V: l8 t7 a% s: ]; r5 {[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: v& [: E) z) w) [8 @  E: h]  Z# Z  F' I) B+ h: Y
]
( H: [- T2 e! w0 x" I* r! }* |set global-proportion note
0 Y5 O" A4 U4 N: Q]+ i- F% h1 I! \; e; D9 ^/ ?1 h, ~
end7 u% f" c5 k3 V$ H

2 n6 s$ M0 W9 i; Eto do-trade
# j' V( C3 E8 C' B" y- h;;
这个过程实际上是给双方作出评价的过程
+ h3 Z+ i; p. g0 J! bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' q  c# I$ M' e- Z, Q" Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ w( L& I& O- i9 H" P% @) Z8 f
set trade-record-current lput(timer) trade-record-current
' _- z. h# I* f! @$ d;;
评价时间4 ]% W$ F, R% K- L2 [
ask myself [
! ^! I7 p# D' k: O' \update-local-reputation) e7 T8 d# K6 d- W$ K. X
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 {  t- s$ E: a' U& }! _]8 }; s) p( v$ \, s* ?' }6 n
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 ?* @" T4 [( }+ W;;
将此次交易的记录加入到trade-record-one
% {. D" T( n9 K! Z( z; X4 l& w6 Yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 a8 B6 d4 q: s9 h) y; ^3 Wlet note (item 2 trade-record-current ): j/ K- D! w2 h5 G
set trade-record-current
/ G1 |: E! ^3 b  y: ?9 Q(replace-item 2 trade-record-current (item 3 trade-record-current))

" Z& Y) q) o0 ^3 p' m1 r  zset trade-record-current4 ^; k1 _  h+ q) W
(replace-item 3 trade-record-current note)6 I: {8 ?& w) c" S" ?
5 \/ W# r, s' }5 t% U4 G1 c
* n9 j6 Q- {+ S7 h  ?
ask customer [6 R4 [8 P! m* z* i4 c: V2 [8 A
update-local-reputation
& Z& b/ Y6 [% _, X( Z/ u2 a+ tset trade-record-current
5 {' w" M! L% X! Y& G3 p( `1 O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 S: n' z' D: Z& m: P. _
]
. q8 G$ N+ p% s8 b8 N# W3 z2 j* k8 z  @
, s7 C/ H- X, L* c* G6 C
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% r0 M6 ]  S; p" p

$ e6 t  u4 B( W" l1 c9 Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- P7 y0 Z4 D  h) `& o;;
将此次交易的记录加入到customertrade-record-all4 a0 y8 n+ I6 [2 \' K
end
4 x6 C4 k( y: e* y
6 M$ ~" ?, @7 A  s& U2 q) Lto update-local-reputation7 e& K- V7 r- c* _
set [trade-record-one-len] of myself length [trade-record-one] of myself+ c. |' b6 _+ x* J

+ Y- K: U8 @8 G7 l; N. S) d5 h4 U' E4 k
;;if [trade-record-one-len] of myself > 3
/ P) I. g5 k/ o) _5 G) k
update-neighbor-total
. F7 p$ j! L( @9 U  C( {8 m;;
更新邻居节点的数目,在此进行
1 q$ P" d: {  d- klet i 3
9 J& J9 q) r" x- v# ?; Flet sum-time 0+ ?  I8 V& a( d, g) Y2 w
while[i < [trade-record-one-len] of myself]
0 `& k: f/ Z5 `, \[" }  C; i3 u% b8 f' {. K" U
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ z2 v6 y2 k! _# O" d8 e' E; B% ]. I' w& @
set i
% @6 z2 X* d  T+ o( i + 1)
( ~* }8 Y: ^  `0 w) |! I
]6 c, k5 G! c( j+ q
let j 3
8 L- v: F4 L/ _1 Z0 rlet sum-money 0
: C, x, o6 U2 u) D6 f# hwhile[j < [trade-record-one-len] of myself]% c3 @; S9 {) Q( t
[5 I8 E+ Z& Y+ V- i
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)! D" N! W' L$ q( ?0 d
set j
( t9 ]' F. N+ }% P; p! N( m( j + 1)

. J; G. i6 f9 K2 E3 J# _6 c]$ j6 H, T% l1 d& G
let k 30 a7 [* V, z* w  J- g7 |3 ~
let power 0& d& a" {1 w; W8 V0 n3 V
let local 0: v5 O6 w: t( X0 u# V, I) a
while [k <[trade-record-one-len] of myself]& r) [9 T7 D6 {
[
9 s* ~; o, Z% @9 ~5 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) 0 m1 [+ u% A& T2 \9 @% X4 H' J4 W
set k (k + 1)
2 V  ~2 g" ]9 J3 \+ ~' D]
# B- i$ m; x8 H) W5 bset [local-reputation] of myself (local): [% g1 [' O' k9 |
end+ @, n% [7 C8 d/ j' Z

3 r; ~% i# l5 k( [# wto update-neighbor-total& c) f& }5 n* j& Q

" ~7 |& F% z7 p$ l& ~if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- a$ T6 N# D% k2 }% `. J& L" O% R4 {

' X$ i$ w9 _4 _/ qend, @. F4 m! k$ q6 L* C

' l7 ^9 ]! I( M0 ^& }to update-credibility-ijl 0 O5 y& B+ D) l" q- e3 |
3 t+ i0 O0 }7 ]5 V
;;
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。
) U3 D9 |! e& ^# z# n4 T# Plet l 0
9 N% j, k' Y) S2 t, |. \' y2 Pwhile[ l < people ]
3 o8 ~$ Q- r0 z# ], `( J;;
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6 k0 u$ R6 j& X% L' ?  J4 c2 I
[. u& O$ H4 p  V; N9 A6 D5 s; y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer). e# T+ K, B# M* E
if (trade-record-one-j-l-len > 3)
( Z7 L2 F( J" a2 u( y& {/ t[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
/ l8 R- S9 f& A0 _$ l- Z9 Ylet i 3
4 R6 [- G/ G, b' ?/ m& klet sum-time 0, F9 M/ L2 C7 [, `0 q3 p9 i
while[i < trade-record-one-len]
/ k+ Z0 `9 v7 F1 B[
' T9 L1 S, w) Y' G1 F8 I  Uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( }3 s# j$ G0 f# Y" P
set i
, ?+ k2 I  T, J) q% \  B0 t( i + 1)
) W: ]1 _) a& i2 p! F5 B
]5 v* C+ l! N7 X7 [0 \8 L7 d
let credibility-i-j-l 0
, z. h2 F! P. X4 I+ S;;i
评价(jjl的评价)
3 [2 c' v' ~0 Vlet j 3
( e3 Y; w9 E! Q( B7 v+ x& @  Slet k 4
5 D5 ^: P+ F) B1 m& K" v. d) }9 hwhile[j < trade-record-one-len]
& c8 Y/ |& Z& l1 g' L% Z[
  G& i' n2 Z$ ?) G% H) U+ X0 |: A) uwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
5 D# S! K7 _" C/ p5 y; d! }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)
; [: M; W: v: b, m6 l/ _set j
8 L# \0 ^1 v3 q* w  P" A0 _. }( j + 1)
0 T9 Z1 Z8 w. P; s  z0 {/ o
]& h) u: M. P8 [/ o! Y: e
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 ))& C" s/ g3 j6 H# l

( L, V$ _# ~2 _$ ^( s5 J

7 `2 V2 T7 V$ J* j) P6 q3 N5 H& vlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
" e1 ^1 z' J. w! d;;
及时更新il的评价质量的评价
% M& B: J1 j8 c4 ~8 d2 |9 nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ], b1 r: f+ n) _& m$ t
set l (l + 1)+ u0 d$ t: k9 h# f/ h
]9 C0 }% |, U( g) l9 i. Q
end
2 M" m4 X3 V5 N2 ^7 g4 g) j* `2 n7 u0 _1 Y- f! n. U2 A: z/ p) ?
to update-credibility-list& A' C- Q$ r, d  R/ ^1 U
let i 0
# i  R+ ?( o6 E; w+ ?7 bwhile[i < people]+ w* D; m7 s4 B" _+ O% C
[5 l1 O( z" c4 o0 E4 ]5 w
let j 0) w. L0 w" L$ {" c9 B
let note 0
9 Q( I* U& U! Q4 Blet k 06 y( q; |5 V' G1 B. J
;;
计作出过评价的邻居节点的数目
' b; a  c% s- j; @- i9 Uwhile[j < people]
( `, ^* J& d, f6 V[- Z6 J2 u3 Q9 a, Y6 K, Z% O: |
if (item j( [credibility] of turtle (i + 1)) != -1)
2 i4 V6 l. ]) h4 @1 I( L: C;;
判断是否给本turtle的评价质量做出过评价的节点
$ T, O2 ~# j* v* \5 {5 {1 I1 O[set note (note + item j ([credibility]of turtle (i + 1)))
# x1 Q/ Q  z& H# A5 h# N;;*(exp (-(people - 2)))/(people - 2))]
- g% W: D; v( o3 U: c5 i6 {  i
set k (k + 1)6 ?  Y, b! q9 I5 L- D
]5 M  a% O& `* |0 w1 @. N$ R  x# [
set j (j + 1)
! f% a5 g1 Y4 w) P]
5 B# t5 |6 ?% I! u! oset note (note *(exp (- (1 / k)))/ k)
. U7 h8 d  j3 jset credibility-list (replace-item i credibility-list note)1 [- s# Q* L8 ~  x
set i (i + 1)4 l0 e9 t9 `+ L1 \* }
]4 R; l' P1 W7 G: j$ t; u
end( |- n+ b6 n  P& r7 w+ y
5 q) u7 Y7 M& ~# ?/ H+ e
to update-global-reputation-list4 t' k, m: l) l" _6 s4 u" c% ?
let j 0
5 p3 ?: T4 N* a6 X, E; `while[j < people]
* [2 g6 u; W( ^8 c3 `" [5 y[
, U9 S+ S- L% y; H& J% }+ V0 Wlet new 0
1 Z, M- L/ j6 s4 Q;;
暂存新的一个全局声誉. _1 @  L- ^: c/ S  D
let i 0( v* M+ C* r8 g) x/ K$ I
let sum-money 0! f: Z" v' }) I5 M$ L
let credibility-money 0
. P( [  \% g3 r6 T7 g. ~while [i < people]* o/ ]) }2 W1 k& |" M* O6 c4 Z8 |
[
& [1 h. ~3 w, @. a, Y( G- aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! K2 a' M" K, n( g0 ?; P/ s7 Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 b( k6 x& v( r& z2 Jset i (i + 1)* `) `; i' r& w' u  v1 L- ~% _
]+ [& @+ d% V$ K& i  s( q
let k 0
5 R2 K* d' c: N2 Alet new1 00 M$ }: L( q4 M+ |
while [k < people]
; t7 u/ Y/ S9 d/ U8 B; c6 K[
, D- Y! E3 X3 M7 h$ oset 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)9 s; z3 D/ w  ^3 T6 \, ]
set k (k + 1)
3 E. p& L0 _2 x]) G/ i' g' T' [" g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & E3 F8 _4 t% U8 z% K+ Y9 w" O" u
set global-reputation-list (replace-item j global-reputation-list new)7 L  {8 S5 Z9 y& x8 ]* q
set j (j + 1)
8 r9 i5 R  u# J( h3 V5 w  Q]
8 E. ?& U2 |# {$ a+ q2 V  A# S. pend8 K8 Y! c% c' V+ K9 d0 A) A8 f7 z
5 j4 {/ k! d" X8 O

7 d& \$ e9 I3 Q: H
/ F' v7 S* ~' a0 x0 g$ Gto get-color
6 j: B5 Z7 x/ q2 [9 o$ o* d; g9 V3 |  c
set color blue
- X& J6 r- a; w8 v
end
  f& {& D8 ]' C1 Y; f1 _
9 f3 ~! y" w. rto poll-class& U% ~: T/ f* Y8 T& u. Q
end
. Q- C2 g/ o4 [1 R) o) ]6 r0 k: w
to setup-plot1" O& N0 ]: N8 \& j* X
+ D: L9 r) o7 P  v
set-current-plot "Trends-of-Local-reputation"

- a* ?, ~, C" w* f, X6 o$ x* {6 l( g( j) F* h7 g) T& ]
set-plot-x-range 0 xmax
/ e4 A, y! w& X% j( R0 j
; t+ J0 U% u2 o: l% h3 Y
set-plot-y-range 0.0 ymax
  y" n4 E# f: I! s, h
end( S9 ~" E8 l9 {( U

5 B! D* Y( S7 j) r4 J' K) o" Ito setup-plot2
, |. j% G9 L8 n& z: I% u1 ~& {5 z) A# S! h
set-current-plot "Trends-of-global-reputation"
4 H- E; H+ m4 M5 r3 T- R* V

1 I3 \9 i7 V9 C$ k4 M1 t# rset-plot-x-range 0 xmax
% t5 U' d2 x: i/ A* X# c. G
8 I' _5 s; z! C
set-plot-y-range 0.0 ymax

; h* K7 R& x% \2 R1 _5 e) l0 ]end0 P/ I1 Q7 W' s/ f* }

& g/ A7 p- t! S% T4 @# \' qto setup-plot3
# Y4 R( y, }. j  `9 y& Z* `# u  H/ Z) U) }
set-current-plot "Trends-of-credibility"
* b: e4 ?$ f* X* U8 V
! b9 q5 o+ M: r8 Z
set-plot-x-range 0 xmax

6 x" t5 j/ G; z8 r2 j8 X: O
  w5 w$ w. l% xset-plot-y-range 0.0 ymax

) C+ ~8 R  X6 R3 T: [9 B% z- H& gend
. P; f- G0 ~$ D* r1 x: T, n% n( E- u- E, [! W" W( v, Q
to do-plots
/ F7 g+ j( y+ W" jset-current-plot "Trends-of-Local-reputation"9 C+ C5 F0 S% h4 y: e! d, h
set-current-plot-pen "Honest service"
5 V9 [8 ^% l& ~  _1 {- D) s; Q1 Vend
, o9 o: W8 `4 u' x& _; r" k8 s! Q& ?1 D. W6 p8 Z( u& w
[ 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.
. }4 [, ^, q' ?9 c, u  W+ L, G8 f& p- ^0 z- ?" _+ z/ v
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, 2025-11-20 06:37 , Processed in 0.020864 second(s), 17 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表