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: 15157|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:
) w( E- b* @  Sto do-business / c4 ^! j5 v5 }. H' e3 C- D3 j
rt random 360( g9 {2 j+ O% ]
fd 17 C0 Y- L1 U+ D, z8 ]. J; t
ifelse(other turtles-here != nobody)[& M6 D/ E( S4 S+ s
   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." `2 e8 _5 I6 D3 n4 v1 C
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 n! {3 H# b9 q) d
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; B1 S0 [; T4 q
   set [trade-record-one-len] of self length [trade-record-one] of self" e# P- Y' X; W
   set trade-record-current( list (timer) (random money-upper-limit))
; A/ L  \, i- E2 W4 }2 n
; |2 G9 F9 v1 ~. r) Y问题的提示如下:
$ ^& n0 C& Q  ^! d  r
8 q: ^& i9 L" a, G9 G3 Xerror while turtle 50 running OF in procedure DO-BUSINESS
& `, d; A& }0 f- ^  called by procedure GO
) C; L1 \) ~& q! f, j: ]/ O1 dOF expected input to be a turtle agentset or turtle but got NOBODY instead.# H9 J/ d. N0 b* n- A2 _" @
(halted running of go)
) t) R# b$ v' b2 B1 j$ }$ H( ?2 F8 \' s: O+ V$ Y4 D
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~~
, _% U; u$ r: p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
" {/ c  E7 v  d" Z1 Pglobals[% r- f; e2 J& ~  w# k' |, u3 c
xmax
" k& |4 R3 m2 [  z$ Nymax. {( s% t, b* i0 I, M9 Y* T
global-reputation-list
( B4 M' J" ?) _" \
, a- |8 t9 e3 b7 O% h* K( i;;
每一个turtle的全局声誉都存在此LIST9 m2 _2 A' E- q( q2 L& O
credibility-list
. C2 K0 x# L) s; {5 \  ^;;
每一个turtle的评价可信度
% M0 c# H4 X/ O! x% q; y& Ihonest-service
# x5 ?2 Z, M6 c' _' Nunhonest-service
' N/ h# G5 x' I( noscillation
+ V9 r9 V/ Y2 h6 Q# a7 {0 irand-dynamic
. \: c$ }% J7 P8 D1 `# g]) \. R6 r) `6 u# s' P4 {/ J- `

& U( ?5 u% ]# ~; T  K( Q" a# Sturtles-own[
( z6 Z: d" t% R+ L9 Ltrade-record-all: O+ @, {' K+ S3 K9 J
;;a list of lists,
trade-record-one组成
9 E* |' }' ^1 E8 J) Z8 O( [trade-record-one
- N2 d# T% A$ G5 x* i/ r;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 O- p- x) p3 H2 N2 i4 A/ d4 q4 T( n6 g: o4 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]]4 ^, A" p6 Q9 Y% S' ?
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]" G% g& o4 g) s0 d: ~6 \2 t
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
, p) z" ?: M5 y9 `; w6 p, ^5 tneighbor-total2 O% l- `; g" R$ W. j
;;
记录该turtle的邻居节点的数目/ A9 p, v; k( P0 v1 L' @* M  x
trade-time
( V, t2 q9 p1 m8 R;;
当前发生交易的turtle的交易时间
. p2 M& z3 }" i# q) ^. x" Bappraise-give
) ~  T' B9 z; y7 i) j6 v;;
当前发生交易时给出的评价
# x3 z# t% Z7 H) gappraise-receive
$ ?- x# U+ y6 c* I;;
当前发生交易时收到的评价, \" k; u; F6 N4 p  v* d
appraise-time
3 \6 k+ Q3 C" h4 D  y  p;;
当前发生交易时的评价时间" l5 M0 U7 h! Y3 G- l+ I
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
% o  t/ ]% `7 |6 J7 F- r$ q6 Mtrade-times-total) q& v' L+ z& {& c' q) W0 w( B6 C
;;
与当前turtle的交易总次数  @! M: _$ p! V1 r+ k7 C2 Q$ A
trade-money-total  K9 v( Q2 }- s4 a9 b- D( E
;;
与当前turtle的交易总金额
% s- W3 _" I; J8 w! J3 W9 f4 Elocal-reputation( g( z; Y/ S. I. j
global-reputation
% X9 F+ n8 H- n0 J9 ]credibility
/ }/ N+ E' }4 ^( H;;
评价可信度,每次交易后都需要更新
  Q8 Q& f0 X% t; ecredibility-all
* j* a% w$ y: P3 I;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据" o8 Z# f9 n5 ]9 U

3 ^3 L7 K3 v; _0 E;;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
& b4 r- z% @6 T! O  p8 O0 X# |credibility-one
4 B; K- X  z/ F3 E( i;;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
4 B) ^0 Q: C+ h5 @* Vglobal-proportion# Z/ [" b  J; q- T& Q
customer. l/ x6 l% e& a6 l4 i
customer-no
( x, h  r, p) X6 d. Utrust-ok( x- U* }! k0 r1 B/ |, f
trade-record-one-len;;trade-record-one的长度0 r/ Y1 X! d4 F4 f
]
$ z$ i5 f$ c- l& H# e. n! Y
3 n; s7 I% s4 }- ];;setup procedure  r6 H- A6 B9 t
% n3 O, ^/ ~* K6 |( W- {, l: y
to setup5 J0 Y% |' Y/ n" b4 N
6 _# B" W3 o% x: }
ca

, [( U' P, l+ z0 B" w9 |) ?
: B- s. K- A" G, J; I- Ninitialize-settings
) S6 K: @( I6 x/ N; f

5 {+ Z; ~2 {& A2 @  q$ h1 l! Ccrt people [setup-turtles]
  m+ S8 s, i$ e3 u
  L6 X+ E- l6 ~/ o
reset-timer
& I! S8 d7 b: Z8 m  }
/ k5 n" B4 O3 v9 V8 I8 R
poll-class

  j+ f1 \6 \. k- h# u7 S2 z& ?4 v+ e4 A: E% i6 w! j. O
setup-plots
5 H( K& [% E) C1 k
7 b4 n6 I9 J& K0 R6 E6 Z$ p3 {# k
do-plots

: Y- p5 A% e2 h$ H  U! hend
- H# B4 e+ {2 |4 }/ B/ I8 p
8 `7 n* f( ?6 v* s2 L* jto initialize-settings
9 S4 v# C. }/ i6 D; x3 K$ u3 l7 u. S+ Q' K- y
set global-reputation-list []
4 f' P6 i3 E7 {2 I; T: E( Q

; T- o& K2 v: J8 S& B2 ~4 Tset credibility-list n-values people [0.5]
5 Y& {" r$ \" L+ f. s8 F

7 w  P6 n# H. s! f) rset honest-service 0
0 b! T% j8 @" S& u6 ^

+ F" K4 @+ C$ W4 ~4 E2 Cset unhonest-service 0
' H0 F7 b1 Z# k: b# K2 Y
/ ]6 w: V, s1 g! e
set oscillation 0

* B% k+ b$ e9 f" Y0 K" {7 {2 A- x6 D" r* @. m. H" @" ^9 x
set rand-dynamic 0
6 ]; k" ?& P- L
end. t+ g% S, Y4 c& ~3 K5 z! m

6 n7 L$ [3 P) }& Gto setup-turtles 4 b( B: y. l' W
set shape "person"
! z" O8 p/ k* D4 M( _/ k& Ksetxy random-xcor random-ycor! x5 `% {* h2 \, m/ ?
set trade-record-one []
% K: q) u- Z( m/ \, f3 ]4 C' k
! M( A/ ^" P% Z+ l
set trade-record-all n-values people [(list (? + 1) 0 0)]
- Z  t1 ~( {3 N: _
+ Y  O' ^' \, @* h7 O5 }7 M
set trade-record-current []
( P% H* e2 X0 c( Wset credibility-receive []9 B& K! A" j: {1 Y7 s, D5 D
set local-reputation 0.5
- K  x0 L1 v$ iset neighbor-total 0
: S5 s+ i3 g  z" L, j9 V- m1 Uset trade-times-total 05 L; I6 H6 S+ y; R3 D) U
set trade-money-total 0
2 r0 g# v! I2 G; ]set customer nobody0 x5 R- k, B) B2 K$ b7 X1 W
set credibility-all n-values people [creat-credibility]5 p( L/ w2 \4 S7 I
set credibility n-values people [-1]6 V8 |( V# j( L5 Q5 ?0 ?- U
get-color
/ U" r+ Y# `! I! f
2 Z6 e$ E! k- p4 |
end
6 b, Q: E; u# x! x! }: ]' ?) Y0 C. @7 d$ j5 W; ]  }* J
to-report creat-credibility- ?$ S3 Q' D& Q  P) r
report n-values people [0.5]# x3 `! l" S( T
end) t; k2 R3 Q! m8 T& m  t  v3 ~

) @2 }3 \! p- ?to setup-plots
$ X) f4 c  {$ N5 i5 r7 _! U* y
; s5 K- p" O, W% F- bset xmax 30

2 g. {6 n2 T! _6 }8 }  |9 M/ C2 O! C' L$ `
set ymax 1.0
1 Z6 @0 V# o$ X3 c; e) E8 [

. S. K9 `+ y5 w; d1 E  t& R* \clear-all-plots
- R7 }. `5 C. c) z, ?, W: O

- z0 H+ I  l- B! Q7 Z( k9 R& usetup-plot1
. R" R) X/ ?( w3 f; G) Z
5 h) z  D4 c5 G  G' J. B2 z+ o
setup-plot2

" u3 g  w1 s! v; L) D& z: F! C% L
. c. P, W" N: b% i" Vsetup-plot3
0 Q& C" i& \/ q4 |
end
( ^7 M$ Q2 `. j9 E4 W" ?& C& H4 o# i  w8 n
;;run time procedures; W2 X8 `% s1 E7 \. y
' n: b- G. O3 ~. b2 d# L
to go: ?" R7 j0 Y$ ]2 I

4 \1 Z$ M0 x1 N/ Z' g2 `ask turtles [do-business]

& s4 r, o( ^% X# o  x- ]5 R$ v' ?end
0 n. b: e3 V3 P  Z  I" X) V. H/ _; v% H  {. V4 l5 M6 r
to do-business
% z6 H% A9 E3 n  T* H
7 x% J& ?- d* h
9 Z: `/ o! @& Z2 @" O: h
rt random 360
( G& f* G7 a/ h; w5 C0 \4 @/ _
' X* M' v- w3 F8 x8 J: O  U( J5 t( f
fd 1

& O; ]2 ]) h% j% h* S1 z1 E+ ]7 X) k
ifelse(other turtles-here != nobody)[

2 s7 e+ H5 w3 {  c% j. L
' A5 l% U( V: ]) G" {set customer one-of other turtles-here

! f9 f2 n! K3 I# V, r
$ }* o# ^# P3 m% Y. k8 [) D;; set [customer] of customer myself

( n8 @% z. L! k$ `& [
- p* h7 _3 f; n" e6 Tset [trade-record-one] of self item (([who] of customer) - 1)
: S: {! m$ I) ]% X# T  Q' I[trade-record-all]of self
# I& l$ W& d2 r) I$ F;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 ]6 D9 P, i' z4 f% t0 U
2 ]# ?- c+ y7 M
set [trade-record-one] of customer item (([who] of self) - 1)
" x, O: j) J# M8 R2 U3 i[trade-record-all]of customer
1 ]) l% [; P/ ]- R
" R3 D  |8 w, O5 J# _2 Z( K9 G
set [trade-record-one-len] of self length [trade-record-one] of self

* S- q- A1 q) \: ]
' |3 i" k) u: ^4 a2 lset trade-record-current( list (timer) (random money-upper-limit))
" q9 Y1 ?& L. U7 b* j) b! |
5 S9 p4 Y% a8 Y* ?+ ~
ask self [do-trust]
% t9 t2 n' P  A, K) r8 U;;
先求ij的信任度, |0 i: q' H" {/ j. U: Y( M, w

0 \; G' E! C+ t5 T' f, cif ([trust-ok] of self)
' r& v5 w- K! Q. y;;
根据ij的信任度来决定是否与j进行交易[; l# d+ G% V; K2 J( V
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 H/ F3 _6 x/ O" i

  `; F% R. O( ]; I[
' S- Z  j. t( l/ n: h) Z, k  h. J* k1 p

: @# n. o, X& w2 o1 J7 E# tdo-trade

! f) v. r% q- ~3 r5 i
$ |9 Q/ p+ @  E) |update-credibility-ijl
" g* L% S8 [3 a: N1 j' d) D* L- Q

3 _' b  Y4 n3 D3 }; Kupdate-credibility-list
$ p. t$ {1 f8 ^9 `9 k5 J

$ C" ^" O6 L1 Q
! |8 v, }5 h# g# g: }2 q' d3 K  @% Qupdate-global-reputation-list
) @' s5 {2 A3 R1 a  D0 g/ `

( x7 K( h5 I: Q) n: R: Npoll-class
9 E; y* a6 h# s4 Q$ Y

2 h7 \  g4 R0 Q" A* oget-color
) y6 N5 d" e& k
3 I$ M" f( x8 g! b; U8 z/ r
]]# _7 e- |% F7 N2 |+ g2 F: I6 [
) C- M9 l/ g: Q. h& j
;;
如果所得的信任度满足条件,则进行交易# u2 Y/ _6 J- Y# {9 j
0 @# T" h8 ~/ F0 S0 a( ]
[

. `* o# t' u8 u/ j3 ?, }) K' n' Q% Y/ S: G( z/ I
rt random 360
7 I) v3 ^) ]& [

0 o) U. F# i1 p$ gfd 1
: b! Y; T( d  \/ O7 N# r
9 _7 M1 I7 D( F- X/ z; O' i" m1 u+ j
]

& k  g; c$ X$ T/ \$ Q1 S/ i- h0 M
end

' }: T  X4 E  _; X: J2 W" h' i: Z7 P! `+ N5 d
to do-trust
0 Y9 D4 @& b1 nset trust-ok False# L$ g% H: g# n7 [; R- h

+ d. i4 u1 T2 l/ t* W

/ l8 t4 I2 k( g( Llet max-trade-times 0
/ M- O. h' A$ o$ L: w- V- Iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 m/ v) P. V# b
let max-trade-money 0$ w# i/ P5 X4 a! g" s7 @
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 X1 A  s7 H4 F& P5 f! @* Q2 plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 u: G/ }7 M% W# y2 }7 K! x2 D. C/ ^; l4 N7 I! y- o" a

% w: v0 p  [0 q4 ]get-global-proportion) f0 v( y+ m. z: D
let trust-value$ q% r3 H: r  p. l
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)
  |) B$ ^3 t5 _, K: S6 G' X
if(trust-value > trade-trust-value)
  `6 H% c' ^/ ]% ~) \1 |[set trust-ok true]
- U7 D/ s' T9 `5 u4 O' ^3 send
# |3 [4 m+ p* P0 Z
+ ~# d: X+ x6 w- kto get-global-proportion; a4 i; y5 `: u2 e: _! O
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 k6 C9 L4 I+ r8 G5 R7 x[set global-proportion 0]
3 L; v1 K; Y2 F0 G# q7 L[let i 0- V* Y5 s2 ~' ^$ V5 o8 Y' b
let sum-money 0
% Z* u" A0 T( Y$ R& p& Rwhile[ i < people]
6 E6 U9 D! ^7 ^2 Q* {  ]3 Z[& W: j  u7 |6 o: U/ I1 N
if( length (item i
. V3 C& D* Q1 j[trade-record-all] of customer) > 3 )

- x0 ?# @5 L" _' s, W[* ?/ t3 Y  j9 P, I1 z4 J/ S
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- D: I% m: e, v; t( H# n]
: V, t! d* W1 |! l* ?5 `]
9 F2 R% x8 j  [/ P" }6 j1 slet j 0
/ S& r1 u& ?8 blet note 05 E7 C3 D$ f: r4 i; X+ _
while[ j < people]$ @" ^' a- ]6 z/ B1 ]& S; k
[
% P6 X9 |' f% S4 l6 N- hif( length (item i
. f- o( p8 o- S[trade-record-all] of customer) > 3 )

/ D# }+ t3 w' q( u3 p* d5 v[# Y3 C6 |1 g" E( ]. _- y5 }1 `, _
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 I, |+ ~, _: g2 C4 g6 ]+ P7 P[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 C, P# h5 L6 M! M: ]$ q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 J8 i- `' |3 S5 I]
* X% L: t9 J$ R1 y1 C3 T: a]# E6 c5 K) e& @" ~# _. G
set global-proportion note) y5 N6 H7 o' ?) I* o1 z6 C
]
# j# n$ U$ ~- y* e- Tend$ }% a5 F/ Z# K+ \
9 d5 S' x  n3 m& E: q/ }, b
to do-trade
% Y. p" _5 A0 P: @; A9 J;;
这个过程实际上是给双方作出评价的过程- N$ G5 l% f" G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ T- U" d* S5 v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' y0 T1 R* b( O& K9 U' \
set trade-record-current lput(timer) trade-record-current6 _% [7 n" Y) M+ u8 w! E6 j
;;
评价时间% A! {+ t8 ?; l$ x' d' j
ask myself [
/ O5 d( v( T. a* K; jupdate-local-reputation4 s6 d5 h% ~9 m' e! f  M3 W
set trade-record-current lput([local-reputation] of myself) trade-record-current0 C2 M; s3 M1 q4 j
]4 Q" J7 b2 z* }7 u6 p
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 ]- R/ @; H# G3 |1 k0 K
;;
将此次交易的记录加入到trade-record-one% v5 F# y5 y+ S9 X1 I# m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# z+ r* c; l0 n9 ?8 u  |5 q4 i
let note (item 2 trade-record-current )& D8 K" {: @2 w$ w) H
set trade-record-current
9 A4 ~, j' d. q(replace-item 2 trade-record-current (item 3 trade-record-current))
$ i7 T, q0 _; t
set trade-record-current5 x8 W" i  B5 J, x
(replace-item 3 trade-record-current note), v8 H$ l: b3 h8 w4 \; ]  B) }
3 z6 o4 m' Z2 d0 f! g7 g, `. b
  M; B+ k9 x/ h# ~: A
ask customer [
: H  L- L/ R/ g. Qupdate-local-reputation& n, j$ _+ G8 B2 I: X5 u7 v
set trade-record-current9 k9 F7 y) _% J5 ^7 Y+ m
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 d( p* w! ]6 S. \
]
8 ^! w6 z! g% L9 P7 [$ Y, l. y0 c$ h0 s# o6 v! k
2 {- j. b0 l; X( F$ s* Q) M5 w
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) }& S/ Q0 ^! H& m* U6 p3 ?

6 o2 J$ a8 c9 E6 \) g" b9 Xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ i9 V' |' n8 Y* j;;
将此次交易的记录加入到customertrade-record-all8 `8 {  e) m/ d6 n1 I8 o, o* d" ?
end; I) F- H* I( f/ w* I* ?& T! B7 i

* i9 {4 E  d% ]to update-local-reputation
# D/ z7 D" ^& W: k( P" sset [trade-record-one-len] of myself length [trade-record-one] of myself
$ j: W! V1 z" H$ S7 N2 ~8 j& l' S8 ?4 O8 k4 P9 U5 G% k" g

( s5 V# M" u* {- x$ W0 j! Y;;if [trade-record-one-len] of myself > 3

- o9 L" }7 _% ~) y* H7 h- K0 }8 Wupdate-neighbor-total4 v. q' h! d; C/ U- m+ W: R( }
;;
更新邻居节点的数目,在此进行: u- X, v% {/ ~* o
let i 3
  T$ K% @: E) i- J% Slet sum-time 0. E2 D- `% U/ d2 c
while[i < [trade-record-one-len] of myself]
7 v! }4 |5 f4 h. |[( U, v( Q& ]2 ]2 v$ K
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 A9 \4 U+ N- a. {- r/ E9 ~set i6 |$ r8 `8 [! u. q
( i + 1)
0 Y1 t" T: J1 W: }6 T& T" n
]
& ~6 N  F, z, ~  Qlet j 3
0 Y( i3 O. D% Plet sum-money 0
, ?; t: b9 i0 v, Wwhile[j < [trade-record-one-len] of myself]
4 ~6 J: B4 D- H[  ?) d% x/ U: x
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)" _  Q& M4 D* L. C
set j7 p" {$ u8 W: c% p. c
( j + 1)
! R5 ^, I/ I* B3 t4 g$ k- v0 K2 a0 W
]7 R% x/ G! V+ p7 P, ], p& [5 i9 k
let k 3$ p5 _/ F9 S" e7 N% {3 v
let power 0
! Z# ?( B/ x- Blet local 0: ?" m: V! H6 [* o+ }' K
while [k <[trade-record-one-len] of myself]
& r1 m+ @/ P+ x/ S4 Q' ][
" T  _1 r: y. r7 d( J  Vset 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)
( j0 c. Y$ t% A" Z, [; k  Zset k (k + 1)
$ q/ r5 j  o0 }6 S]
8 R. l' V- W& m4 B/ ~' Hset [local-reputation] of myself (local)
0 W, h5 [0 r9 k# w6 I1 ]end+ a# y: t7 }  i! h

- y8 k" v$ @7 j- t6 wto update-neighbor-total8 B8 Q" H& w! T3 Z& [: K
% s/ W0 Y  m$ x+ X9 O# {
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; J/ k. E' v0 f' Q
4 L. L5 `2 C! Q$ N# s

0 ]) j% f5 u9 b$ N+ C7 u. Xend" s) T  |: O& ~7 N! ?' w3 ]8 @

9 Y0 c+ c2 _% S, Vto update-credibility-ijl + s% {+ ^& [2 J0 z% ]
2 {" K. O" s4 X2 c5 J9 w
;;
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。
6 F4 p' \5 m# ]; ilet l 0/ {4 j/ j5 Y- O- Z
while[ l < people ]
  }  x5 U, q' Z; e% Q6 I  L4 h;;
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$ n8 r" f* W' e
[
! W$ M/ @  Z- @6 Flet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' z3 J& Q" w- E0 t: y. dif (trade-record-one-j-l-len > 3)
& ]9 v( E" I4 y# V% K[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-one2 U/ u  g0 O4 b8 d: i  R
let i 35 @2 Z# `9 A0 K: t/ N) R( h
let sum-time 0
4 w, h' y% Y7 h5 Y6 D' G: T/ T5 g# X$ hwhile[i < trade-record-one-len]
8 m* u$ `* b/ ]" {[6 J) _5 H% @5 G6 h0 M# J7 A5 B
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 s' `6 C% @1 B& t
set i* i. V7 W/ X8 f* N4 W# R
( i + 1)
! P6 N0 A7 p* Z( f# f5 ~
]# Y0 P, a/ y3 A& o# r" G+ z
let credibility-i-j-l 0
( u: a  y# F7 m2 Y8 E;;i
评价(jjl的评价)4 ?5 D/ J+ R! i3 u+ a7 f0 X% A
let j 3
7 G/ F* N8 K1 H" Z! O# }6 ulet k 49 v" T- Q* P* I" B; n
while[j < trade-record-one-len]! ^1 r. X: Q0 Y3 `4 S0 l
[
" O, ?  f  W1 H- d2 K6 xwhile [((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( t$ r! h' x3 b7 e+ {" y( a8 j
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)
* G  _; e/ q& M" t. {' ?/ a* yset j
4 i" e' y7 I+ W* \, `4 k8 e, R( j + 1)
1 s: ^& D, t* Y7 w' m6 I6 l
]0 L, l; j" ]7 u! A# o
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 ))1 d: I( P- s3 Y3 X* K9 k6 a

9 ^/ Y3 U  @! h; F+ P0 }

3 Y, S1 |' p! y' D: q2 D8 Wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 Y% K& ^- L% {3 T" y  g3 Z
;;
及时更新il的评价质量的评价
+ [* a. W1 v: pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# f& t# _8 ?$ g$ X3 A1 Uset l (l + 1)3 u! l- G" `; R9 t3 |' }
]
0 l, V6 H/ U& m* s1 }end
0 ?* b/ Q1 a! ^( m) K3 @' f# K- T5 ]  v* X' J% u7 r* n
to update-credibility-list
5 @6 N9 E- N6 B. h6 {let i 0
$ S, x. v7 Y5 A2 b! {& I9 ywhile[i < people]
# j% {  P7 K& F! u% ?[
- w8 M0 |* }' i7 ]6 |7 \$ Zlet j 0: c( Q: k. ?4 ^# i/ M& [) _
let note 0
1 \2 T6 C: {* G$ Q8 L; \7 glet k 0
' Q9 Z$ y8 |1 J. D" [8 u( @# F;;
计作出过评价的邻居节点的数目
- G! F6 O: L. `9 E. Ewhile[j < people]
, B" ^+ M& u' B" Q0 J/ ~4 i/ _[" S1 `' f1 _2 z: |2 e
if (item j( [credibility] of turtle (i + 1)) != -1)6 P, M6 o! H- ]& Z* ^
;;
判断是否给本turtle的评价质量做出过评价的节点
, D4 S& Y6 L- c2 f4 A[set note (note + item j ([credibility]of turtle (i + 1)))
1 c- j6 E" \/ D  o4 F( Z1 A;;*(exp (-(people - 2)))/(people - 2))]

; d( u; c* ^  m# C2 K0 }+ xset k (k + 1)9 y7 h$ u  n+ g" X0 C6 P
]7 ]- O/ b3 ^' r6 a8 Y* `) L# P
set j (j + 1)" M: s! A0 g3 V! c; A! t- w# h
]+ N) {( b& [0 N! u! R- |# G
set note (note *(exp (- (1 / k)))/ k)
9 Y, c. e* s" T, J3 hset credibility-list (replace-item i credibility-list note)
1 R! a. A% n1 _; J! T2 t7 F9 }set i (i + 1)8 L7 l$ u" Y9 z: h( K; s$ v
]! ^/ F/ C$ O8 y0 y: b
end
( |9 {$ o5 F( o6 i! W( Y4 c5 g4 P' G& i" A
to update-global-reputation-list7 L( w; n0 ^+ H9 n! x* T. B: ]
let j 0
) w4 y  O6 ~; Y3 \1 U" u9 p3 Cwhile[j < people]
- ^& n0 l, G- I7 ]9 h[
* q- y* R0 {8 ^  ]5 @1 ulet new 0" G& S3 A* D& Z2 s
;;
暂存新的一个全局声誉1 w+ }, \# u/ y- B& ?  @
let i 0
; P# \" K* q: X! E1 `* }let sum-money 05 C2 `# ~( G+ l% N: j5 }+ o8 _
let credibility-money 0: i0 ?/ }3 |/ D$ y4 I, V* J+ l
while [i < people]' I$ h% I2 ]& Y
[
# H! c3 \* Y: E7 B  D5 |: vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  O* n3 Q0 B" A6 F# x$ a1 G. G
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; c3 d) H( ?& M& R' H0 r* B' Eset i (i + 1)
# q3 y) R+ o( d! Y+ o]
, b% |) B4 `9 `8 P* r/ ?3 ylet k 0- m6 V/ P0 P1 ]- H
let new1 05 [- S8 U, k" v' M( S* E
while [k < people]
+ H& `4 ^# ?1 O[
- w9 k& s. w4 Y, z8 jset 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)
! C* _6 C" q) ]7 uset k (k + 1)
+ z- B$ l; R9 w2 ^- ]2 H8 }]
, V" T+ @  x  q% [set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   C5 x/ V. V) I5 P
set global-reputation-list (replace-item j global-reputation-list new). l8 k  h: {* w
set j (j + 1)
- G$ Y/ p! n3 ^; a, D" k0 p& c4 s]" ~8 D; f2 W8 _/ V+ d( w
end- e& `  P1 B- N8 x7 G1 x
+ g9 ^# ^# i7 `- t
/ p4 `1 T5 p% D! ]. ?9 Y

/ j3 c, X  t$ n& B/ d1 mto get-color
: q/ _& d) [- B: t
5 u( Y3 F+ ^& m9 c5 cset color blue

  W: Y" R7 i. ]% Hend
& V4 I" F% ~. v( G+ G+ ]. c' }8 G% b, h
to poll-class; |9 t+ j# x  Q
end$ O; |) r) q0 S- M1 ?% t" r/ b
5 d1 ~: m/ v. X0 }% W5 ^
to setup-plot1
  |" U' R& }0 {, V; n3 [3 D+ C: @) @# T* R% t
set-current-plot "Trends-of-Local-reputation"

5 ^+ y' C% R4 m" T/ E# T
/ B2 h1 l& C8 u5 gset-plot-x-range 0 xmax
3 R4 [; ^) {: r* \& w8 k; ]
& l' q+ Q/ `& p$ R
set-plot-y-range 0.0 ymax

$ ^; d, a3 ]1 u7 F1 i( \. {6 K4 bend
9 }4 J. g; J; a. ^. I( Y1 X3 H7 F/ m; N  K) {" N5 E
to setup-plot2" g" N; d' W1 o$ h
/ i! M9 L+ N# d0 s: h+ v4 Z8 ~# m" K0 n
set-current-plot "Trends-of-global-reputation"
" M2 C7 \( t; U/ I

9 l* c5 j6 ~+ Rset-plot-x-range 0 xmax

7 [- ?: _9 d8 Z8 |3 O9 i$ U8 ?; F4 Y/ m
set-plot-y-range 0.0 ymax

9 d6 u. B6 ^5 m7 Fend
& l7 M' ]$ t* E2 b( v9 c/ s! S+ B1 X6 x% O& g+ ~# L
to setup-plot3
9 A8 y: K+ L. O/ d
% h& Y/ N! U, k) n: w2 M3 Eset-current-plot "Trends-of-credibility"
6 z" k, F% A* a

+ D+ K* b* k) \) ]+ w; Gset-plot-x-range 0 xmax

2 x6 q' x3 J8 D" T4 a" m
) z" _2 G8 w) @. H' M; _" Rset-plot-y-range 0.0 ymax

: x2 x5 q1 _. I# l" rend
% Y0 y/ ?) y( s; q% D4 {% Q# u" R9 d: Q5 K( `
to do-plots
- |0 p6 r" `+ i, C& Lset-current-plot "Trends-of-Local-reputation"
/ e! t0 {1 b' j! S3 u. tset-current-plot-pen "Honest service"
* l# E1 ?% U6 ?! i* R6 }3 Qend! w$ y+ K0 E$ v: Y
& B2 Z+ W* o6 C: q; `
[ 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.
- Y0 c* G6 y2 x3 P- `
3 H7 }5 k  @  ]/ R) @, 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?
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, 2026-6-4 08:09 , Processed in 0.017190 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