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: 14468|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:- t  ?7 G! ]% S" q$ F/ ]3 @
to do-business   G- Y) Z% z9 l5 o$ }, I( C+ G% W
rt random 360
. g4 f+ y. M% d) q9 y fd 19 @+ n5 J9 `4 r: Q* l* {/ W
ifelse(other turtles-here != nobody)[
& m! J* k* J" @   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.6 {  @$ z! j/ O' h, @
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& [4 o* W# A8 R/ K' v, I4 `7 o8 U   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 j* C: b( a+ N, I) s) }   set [trade-record-one-len] of self length [trade-record-one] of self
, x, I( v" x) P: |7 D   set trade-record-current( list (timer) (random money-upper-limit))
( s' x% p, q0 T: t8 E& S
+ P! Y" j* K9 S0 B1 D问题的提示如下:
+ x/ c! j: ?+ @+ _' d+ ^- }/ U0 s! y& L, o# B; N
error while turtle 50 running OF in procedure DO-BUSINESS
) X0 ]4 [' i+ Z4 B0 U+ z) p  called by procedure GO
# v" m/ x& B* L3 m! C2 }OF expected input to be a turtle agentset or turtle but got NOBODY instead.
- Z1 B1 A4 y$ N9 N4 U% i  `
(halted running of go)
. w4 H% v! _3 d! T
6 W, q' ^9 c$ T7 n9 }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~~/ N6 t7 G0 B4 i% I9 O
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
1 b" H/ v! B8 m  X! J0 ]globals[! X' ?2 L3 @  T1 h5 \$ i' n7 h
xmax3 i3 r% v* }* `& ]) l
ymax
; I9 k. y( e$ s( Q& P! Xglobal-reputation-list
* V# C, P6 G$ W8 k" O3 S- O; a6 H; Z: _1 h
;;
每一个turtle的全局声誉都存在此LIST
8 {+ m8 z  g, g$ R% g" r. scredibility-list
1 a: b6 D1 |% T;;
每一个turtle的评价可信度* }* P' r0 k/ Y  ~* \
honest-service1 [+ C6 g. k: f
unhonest-service, J: f8 e9 _3 W
oscillation/ P5 L8 \+ g* t7 L8 m
rand-dynamic
( V& f( T0 q+ s]
0 @8 n( M$ T# h" Y, d& m, D
/ _8 A: d* Q( U, o5 xturtles-own[
; q2 z. l# t+ ~! W- D& z' q0 M7 Jtrade-record-all
  s8 {2 M: S3 ^: c" H% v;;a list of lists,
trade-record-one组成
2 s9 O% c, |. E# A3 Etrade-record-one
! H: k! u/ ]  f7 p6 P6 E9 M( e;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: V& Y* }" C1 O2 e% V
- |! i$ [& x& o: k/ f;;[
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]]
) f6 ~( |! d8 A# H) l! u$ K/ z; [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! d# K) v( I0 O, E; @" Q* i. rcredibility-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$ a4 }3 L" K4 U; F/ x/ v4 ^& ?
neighbor-total& O2 L8 ?( ?3 q8 Y' \* u
;;
记录该turtle的邻居节点的数目
! n' \' {. j' W3 S" I4 e6 D  Btrade-time
9 f" |0 N' _  l1 N;;
当前发生交易的turtle的交易时间  B; C: f* o6 H" `; b6 {+ y
appraise-give" K, }- a9 q5 x( O
;;
当前发生交易时给出的评价
+ e' K1 W" O8 u  C" Vappraise-receive
: C) j. p. ?  X;;
当前发生交易时收到的评价
' c) C4 z# N) d. g1 Q. qappraise-time0 h7 e7 g: h. o* L. l
;;
当前发生交易时的评价时间7 Y  C. i: s  G# Y2 ^- y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ ]% W5 x6 N$ g5 j4 b! W
trade-times-total
% b) w0 D) \! K6 F  g* ^;;
与当前turtle的交易总次数- W5 B/ }3 U- n5 z
trade-money-total- q4 [( [) X1 r/ u) q9 O
;;
与当前turtle的交易总金额0 P- r) x9 o5 X. |$ D
local-reputation* t' U4 R0 D- s2 z( {8 n3 X
global-reputation
; l5 n( F# F8 d% [6 Ncredibility7 \. ?' p: ?$ ?, u6 D' y
;;
评价可信度,每次交易后都需要更新
/ z' L+ k' W. r. {2 Xcredibility-all: w- _- L* K' Z* z4 L9 ?0 Z9 V
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
2 O& S- m7 O4 {& ]+ h$ c- z6 W% `8 V% J; R/ u# z
;;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. r( \# `: B; |; p/ e3 n3 n
credibility-one/ `/ P& \7 R1 G6 g8 H' C+ J. X; S' y" F
;;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$ |0 N5 P5 N  \/ ~
global-proportion
0 z4 W. ]% A3 m. x; bcustomer6 u/ X. X( s' M7 t
customer-no
: E& F# H5 ^+ O! S+ N0 Htrust-ok
: M+ V$ }9 G9 Xtrade-record-one-len;;trade-record-one的长度
: {8 ~/ Q; V( ]]
* c0 a$ c, T- `' ~1 ?) I3 c
2 c) o3 p7 D/ d7 y! y, };;setup procedure
4 h  }2 a/ E. F/ H' S3 O7 o  c  {5 [' p$ o/ F( y: ?* t
to setup
0 Z% i8 t5 \/ l& S5 _5 u, B
, N6 w' F8 d6 rca
4 C1 |' B1 \$ l5 M& p* t

( _# `5 t3 z9 D5 C1 z. G1 ~& xinitialize-settings
! f) E& H4 r# q" a! m3 b" y5 Y6 t

; |9 z2 b; q! L8 P; F% o% Ncrt people [setup-turtles]
- _& [; B* X  \3 n+ u: D

! j3 y1 k) O! \2 a0 g- _, i4 areset-timer

+ C$ k% E9 B  R* k. m
$ H" g$ E0 {8 u+ V4 ^3 t* {6 w  Qpoll-class

/ O0 s* O* @6 b1 ?
9 r4 m7 P  w+ c5 Q" ]setup-plots

1 K5 T* D; j7 Q3 u) {0 }! I7 i) U0 R( G: K; \0 X& k0 Y) q* j
do-plots

% [2 x4 W/ _3 r2 A7 n' xend1 }$ I( h* ~7 `0 m/ |
, w, s0 B5 z+ g  d9 I, E$ E9 ?) Q
to initialize-settings' L, V3 Q. }: W$ i

) h7 L9 ]8 W$ n  S5 Vset global-reputation-list []
" g! r$ _  ]. s) Z
# @* \1 b: r9 I1 k. `
set credibility-list n-values people [0.5]
/ {; m# T* u2 f2 Z0 M$ d

' o# ~, }7 M1 T/ G( mset honest-service 0

( F* h- x) G7 c4 G) k7 W
% y3 a+ L) W/ c3 Xset unhonest-service 0

$ G; [' L+ |1 h2 Q6 K) T4 H3 ^. s; e5 O
set oscillation 0
2 n1 i/ S3 }  |
/ @3 y- P8 b4 D1 o: Y
set rand-dynamic 0

# u5 d& |/ ]4 n7 u9 t8 Aend6 @) i9 F- ^2 l0 G# p+ ]
. H% V0 K8 {. J& i# I1 d
to setup-turtles 5 r, C) T- u  w( d
set shape "person"# s# I2 d8 B: n( g% Y* R  `  e
setxy random-xcor random-ycor( [9 D  c# V- \- x8 ?, d
set trade-record-one []: n/ c1 v4 o) R  w- t
6 F" s8 p' y- o( Q! V/ F
set trade-record-all n-values people [(list (? + 1) 0 0)] , y# M: {, {8 C. r) u. `! b1 ?
4 o  z5 f& y2 E+ I8 W" C
set trade-record-current []6 g* a2 |* ~0 d' t* C7 ]
set credibility-receive []
5 E. w- w" ~& qset local-reputation 0.5
& g  o4 ~$ X3 P! k( x/ l# y! xset neighbor-total 0% D; G3 h, H. A6 \8 D, g1 ]' y
set trade-times-total 0; W3 `5 E8 [$ s0 f1 \/ K: `, ~/ E
set trade-money-total 0& }/ p, |5 \# x9 P. b. p0 e# w3 ?
set customer nobody* ?2 T6 g  F$ K& B; s& h0 e; Z
set credibility-all n-values people [creat-credibility]4 I5 k6 |  j% k% ?' `+ n
set credibility n-values people [-1]
' `- x$ Z* w3 @( t8 Lget-color
! q8 i( D9 s6 I# W, A/ n- T, {+ Q5 ~) C

5 m) H( y1 ^7 a) z5 |; r0 @! Iend
( `( s+ A) g. |1 l+ x3 S8 i8 K
( r( R- w3 v" X. Vto-report creat-credibility
: n- \% ]& q4 D+ Q2 h8 ?2 f; m7 Yreport n-values people [0.5]
, k& L2 p. l7 n7 O* V% ^end
2 P6 H: n0 W, G1 [/ W
/ Q; S8 v! c/ C# P/ |to setup-plots
( P+ Z3 g2 v3 u1 r  T% }
: A4 X1 |. b1 j# ^/ V4 Fset xmax 30
: k% g  N, S* ^9 P5 I

5 m' t4 c" G3 Q+ }4 l) Mset ymax 1.0
2 {9 D  `+ R  _* ^! O  y
7 e- X  r6 }7 Q, o+ |* _; k
clear-all-plots
0 }/ ]5 O7 _0 Q$ E( P
' C  }* y6 U5 M: u7 g
setup-plot1

) S; Y! R& D* g, ~) u, c
" V7 C( {; d. L+ `7 P. ]setup-plot2

3 b6 R# R, _$ {7 v4 T2 i  A, }
# e5 o% D# V  Z" _3 U9 }$ o* o, jsetup-plot3
8 V8 E1 R% V; ?$ X3 H' u# g3 Z
end7 Y) c/ T9 E! P$ a5 Z

( J* s0 ~+ k: T;;run time procedures3 x2 @3 R8 t9 L$ ^% |( s2 K

+ c' |7 L# Y5 s; `, Q% ^& z" b, l% J) a: Eto go. c7 I' ]8 o8 k
+ Q) Y4 {" @; r2 r
ask turtles [do-business]

5 _  o$ P" Y2 P0 S/ W6 D! A1 h4 dend
* y9 y( D( x. P5 `' m2 H' J! k1 k, [) _) L1 S( k* I, Z+ b, o6 B
to do-business   x) ?2 M8 g+ n% z7 _$ t: l
6 Y) ]/ ^. t, n( X

$ U+ V* `3 w5 s2 G5 krt random 360
* x5 `. S) H* Z* D: B3 t$ @9 W
  C( Y3 p( U8 w6 K7 e2 [8 M/ q2 x
fd 1

" ~* p. N3 z# x. d" Y7 U# s, A8 H5 d6 Y/ j3 o8 N
ifelse(other turtles-here != nobody)[

. X8 D& ]" y% A3 P/ P
! ?  S: U5 X/ e! Kset customer one-of other turtles-here
2 e& z2 J4 f; ]- \3 B* J

6 P$ k( B8 S* y! e) A! w& W;; set [customer] of customer myself

' d- z3 ^1 {7 A3 D+ r- W; ~/ R  K& @
set [trade-record-one] of self item (([who] of customer) - 1)
" b+ b9 P" \  J1 K4 _[trade-record-all]of self
5 {0 E$ S2 O# Y/ k9 j6 |7 p% c;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 S8 X& ^5 ]9 P* x+ I6 h3 B5 d1 A. N; I. B8 B
set [trade-record-one] of customer item (([who] of self) - 1)
" ~, f2 q/ L- M; r. G* G[trade-record-all]of customer
3 m! [! m) }  z8 E

# D2 R% `7 C8 Zset [trade-record-one-len] of self length [trade-record-one] of self
' o% q, [+ c$ [& d9 f

% D" I  W" P. L2 lset trade-record-current( list (timer) (random money-upper-limit))
/ _- a( d& `) @$ `: B0 l

# w4 U+ Q+ F( H% S6 {9 _ask self [do-trust]
2 l$ j/ M. K8 F1 T, e;;
先求ij的信任度
8 u: Y% [2 `- Z* W: o
, U3 D) Q5 Q9 g9 l- p4 ]$ Y+ ]if ([trust-ok] of self)" P5 b+ D% U  ]4 U2 N2 m: |. r1 O% e+ A
;;
根据ij的信任度来决定是否与j进行交易[0 W8 \: W* y* }6 `
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# L& _, z/ r3 V* u# g) ?# D
  m5 t7 q+ X  B6 ~9 L( q, a- n
[
6 w) Y3 P! o6 c5 f
- V( D( J6 e- I" J
do-trade

: E3 ]" W9 G* f$ y" N
4 x4 f) x5 i) Hupdate-credibility-ijl
/ [0 `* Y- s% F1 ]1 U5 C: y) o

6 f7 _/ m- v+ A  w3 _9 _# _8 Gupdate-credibility-list6 v( c1 ]8 B0 q5 C
  J% l. f" o8 M* I

5 x& ^& g( [: _  x( y$ e; Kupdate-global-reputation-list

2 g; g4 w% y  p, a* i+ `; c3 J) V2 U- s$ `! \* m
poll-class
3 w! m% h& g0 H% _

: G1 n( i: ?; ~, W. a6 ]1 q' ^get-color
3 s+ K, I, Y4 m! W: F

; k& t, j3 K- e' B  F5 g]]
+ q. H6 i9 V* l0 p
4 g# P  o9 Z7 H3 ?, {;;
如果所得的信任度满足条件,则进行交易
4 r& b7 ?) E# @* j5 B6 Y. |7 g' @: h, e/ O9 B; L$ w
[
( j6 G, F; ]: ?! K3 D& d
7 a+ G  i$ e7 B
rt random 360

* z) `" J4 l0 O. h7 T9 b9 |
; ^0 l1 ?' U2 B8 r  \fd 1

& f) {3 M0 J" P- M& @
; p# c$ E! z1 t3 \9 V]
& B: q6 P* \+ V" R) K0 Q- E

; i5 y7 ]& _% s/ e; z9 Mend

% v  y, D" ?: B1 |7 j- u; m! X1 J5 ^( I2 R
to do-trust
( {! T. \- ?0 X6 _5 oset trust-ok False
' H% Y4 H* z: z* }; A- w' O2 x$ X7 T& }1 g
" n; e3 G4 ^- l" {) N- A
let max-trade-times 0
, L* R6 |8 P% kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], R% P5 t2 Z# V2 }" D) z9 Y/ X
let max-trade-money 0
2 R9 Q5 f; p6 P6 ]8 ^foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 z4 ?) b; `) {. Z1 t8 f3 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))8 r. X( S4 H& ]. I# d( W. h

5 r- W' c' f, C9 g: Y: H$ i
6 C0 U$ q6 P" o# E) ^
get-global-proportion9 U2 x# q$ \$ O0 T2 w
let trust-value
# @, @" {4 \9 Q# tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
/ ]0 g3 S1 D% h- U9 M0 [
if(trust-value > trade-trust-value)& D$ x8 H# m, v/ r5 q9 M8 _- j
[set trust-ok true]/ g4 ^( B, x. p7 x8 Z5 l
end
  |) W* U. {: n$ u) J* H% W
( _8 N! ?7 D) r" g1 h% c. Qto get-global-proportion& s  m* ?8 e0 y5 ^( [
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 c  R# I7 b. w( \8 l  t. g
[set global-proportion 0]7 K& o8 ?$ E& `6 t. u' Y1 d- k
[let i 0
; u0 m4 W( Z, R: N/ Q  dlet sum-money 0" Y2 N2 \  G. Q$ a/ y8 d+ e3 Q! t
while[ i < people]& _  E7 s' U( J
[" L- Z4 S) l- R, w
if( length (item i
3 T0 P+ h6 ?% D# Q3 k[trade-record-all] of customer) > 3 )
9 i. b. g! \/ U0 a
[# K2 i# Q8 T+ ]8 U& N
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)); b- K9 }3 ]; A! G0 ?; }+ L7 U
]0 I, E& U- U% A. G1 I
]
7 |4 i1 X; p. clet j 0
" g& m; X5 }8 m0 |2 h8 N# hlet note 07 e! M$ h$ I/ ~* R3 Q$ {5 W
while[ j < people]
$ h, ?6 L: ^$ r" P[% ?* M# b1 A6 M; D/ X# Y* u+ w
if( length (item i; v; J8 K( W  A9 s
[trade-record-all] of customer) > 3 )

# v1 k) J9 X/ ?" H* F[
* q) v' o. t5 tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ [1 P1 n2 I; h7 x0 V1 G/ x[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 `3 ]9 M. U) w' b, W[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  {5 s6 @* _+ k2 T3 E
]( Y* e) X# F  W0 c
]2 f/ f: x3 u0 |! O' m" S
set global-proportion note
/ D; ^0 i4 Y) @]
' V# K5 @9 r/ e2 Cend% V  j8 s/ B/ T' D, r  H

' y$ F& x- W: w$ Y6 K# O( _3 z; yto do-trade9 u, F" ~3 r8 j5 v7 ]
;;
这个过程实际上是给双方作出评价的过程
  f1 l7 m$ M! o, o$ fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( S, o. v% o1 ]: r. L4 D. w; U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 k+ W, u* N- ^set trade-record-current lput(timer) trade-record-current
% [1 T3 K. P0 M;;
评价时间4 A: Y$ ]6 g- L: ]% Y& {
ask myself [  \7 l. g/ L& S8 C1 ]& Q$ c
update-local-reputation2 v" e5 d% V% W+ ?
set trade-record-current lput([local-reputation] of myself) trade-record-current
! E8 R# u/ y# q. y" \& A0 `8 Q+ T]6 B+ ^5 i3 @. m+ U8 Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 M* D- B1 l  x2 e9 I2 e9 V' s9 d
;;
将此次交易的记录加入到trade-record-one, t: P! Z8 M- f; K4 r7 U) m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ f& I% X/ n1 B- d0 x  H- o8 r
let note (item 2 trade-record-current )# m: C2 u, B: n3 O5 ?
set trade-record-current0 K$ z6 Q3 x; V6 h5 D
(replace-item 2 trade-record-current (item 3 trade-record-current))
& _8 ~- S! h: G$ U: E2 T2 h: g
set trade-record-current
2 R" a8 C- C: Q5 K% Y" B3 y# C' M(replace-item 3 trade-record-current note)$ C: u" `) g8 ^, D: a
8 U* w+ q0 T* O& Q/ s

# ~( g- W! f2 c/ ?" y  ^4 jask customer [2 O2 W# r0 v/ M6 J. E3 P
update-local-reputation4 L1 `, h& @/ K2 D& ?* s* X" }
set trade-record-current
! w1 p1 `7 ~& {/ C(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- t  p9 t: r1 q* j]8 p+ U5 N& @9 h+ x0 K7 i

3 Q8 D$ y7 D& P# D: A
; v7 i# Q. D& v; |% n" J
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! F( u) b8 s4 H; f; \% a3 C

: x) R' Q$ D4 F, _, j7 w5 `+ b+ sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# f. J- F- w* ?9 f/ A9 o2 N5 Z;;
将此次交易的记录加入到customertrade-record-all  V6 x- ~! G, r* ^6 p) I
end9 A' |  _' N  a8 J3 K% B. I

: E. [5 \9 y8 mto update-local-reputation4 z7 z- }9 t1 G2 N8 M
set [trade-record-one-len] of myself length [trade-record-one] of myself, V) `" Y3 L) s' B' P2 @, h2 u

, j: L$ F* z( D7 x: C- k
2 Y" y7 \. Y2 j! f1 ~;;if [trade-record-one-len] of myself > 3
/ s' I2 s. S, R% U4 B9 b
update-neighbor-total1 x! Y6 f; F4 K- A
;;
更新邻居节点的数目,在此进行
. }* d5 e2 _! l; H* t; I4 T2 klet i 3
) S# W1 I8 p: flet sum-time 0
4 ~$ ~$ [1 c6 \$ ewhile[i < [trade-record-one-len] of myself]! S6 T) X1 H( b9 u& Z8 k7 c  C* Q7 \
[% M2 h' T1 z/ u5 {
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 X% t0 g+ {  U0 w; `5 x& ]: m9 y
set i, U# ?7 N. B& f; d( O! j
( i + 1)

3 N1 g' t4 O9 B- Z]
- r3 X& L$ @3 m4 O: L" U, alet j 3
; L, D1 Y6 o: u9 v4 u; zlet sum-money 0
  |/ W& P' p7 I. ^while[j < [trade-record-one-len] of myself]& S" t  Q) k8 O9 z- }4 T0 G) [
[- Z* N9 i' Q3 {' u# f) B% s/ y8 s
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+ L* D# t  l( s7 cset j
* C8 n( r$ o( M* {( j + 1)

2 Q! \/ U- Q" F; x  Y]
" u8 Y5 ?9 ]: w5 {let k 3! k8 d3 |. l2 }8 K/ C# C
let power 0
9 j7 w; E) [  K8 plet local 0# Z5 e( |+ z% K/ Z& C3 Y
while [k <[trade-record-one-len] of myself]
# u- k/ K  A' K[: ]2 b9 g! @5 T7 P" z
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) ! K, {& c/ }- [, c5 o0 `6 U! J* F
set k (k + 1)
9 ^- P0 `; D- [" I9 M0 q]
: b6 n9 ^. A$ Z1 ]' p1 B. {set [local-reputation] of myself (local)* M7 L  d9 q1 ?1 O  C5 o
end
& L2 ~  x0 L4 W! ]- @& Y" I7 h/ v* A: Z' D
to update-neighbor-total6 p" z2 P1 `4 G/ f: Q: k

2 s$ P+ D- S) n! @8 O$ t. z. N( cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& p; c1 D, m# Y. r6 h" g+ L  N
& D$ f! a0 Z, r; r5 L2 V7 e

4 X& h7 Z$ J, a8 B2 jend
: O# H5 A1 `. y. K
) J/ q; Z& f0 e$ H, W6 J7 p4 mto update-credibility-ijl 8 |) C. }" P& v- l7 P, i% b
& f3 x" j  l1 {
;;
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。9 I' U8 n* f3 I
let l 0
" u  j2 y8 C: \+ y6 [( Kwhile[ l < people ]  U$ u1 X1 S; F* d  v
;;
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 `* w$ d( _1 c
[
) G) Z2 g8 ~/ l3 K' `2 y. T- j8 Xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 Q3 l6 K+ j3 r, O
if (trade-record-one-j-l-len > 3)
2 t6 x1 |" x, v' B[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
& L& y0 V7 C, Q; a% flet i 3' `& `* A" p$ K
let sum-time 0! `; _6 W. k+ ^& J* a: l% V
while[i < trade-record-one-len]0 v- [1 ?1 e7 Y' X5 F/ M
[5 c; G7 B9 j5 a! B/ ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 [% v$ N+ E9 L! o5 I2 G
set i
) k* `8 B5 [$ H- ~, P1 L/ T6 ^8 C2 x) g0 t( i + 1)
' S& ^6 P7 ^. ^4 y
]
9 v& |- [" M2 L( E  elet credibility-i-j-l 0
* L7 @  D! ~+ g" m;;i
评价(jjl的评价)9 _+ |  I5 I# H, {: d5 F& P
let j 3
+ r& m2 {. _% Ulet k 4( J  ]% q2 r. c' o8 k4 d
while[j < trade-record-one-len]1 o# w% C' D: b5 R
[" x$ d6 c- T( J1 }. g1 \
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, u4 p# X. o. e; g5 U" l9 W9 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)* z0 ]: J  }' ~) x+ r. F
set j
# W" w  R  J9 F, Z/ E7 o( j + 1)
/ I. T8 ~+ t% A) ^4 i
]
9 @, f5 c- O9 z! j9 D, j6 }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 ))
( B  P6 p* q, K4 m% J# F/ z1 j
$ j! s& i6 n7 \2 N1 V6 j. Q( d2 K+ d

8 Q" Z2 K% u/ a! w+ Ilet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# F* U3 l) J/ f1 L
;;
及时更新il的评价质量的评价# J4 F- J$ k1 ?! v7 M
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 ~/ }: M; Q5 T4 e1 uset l (l + 1)2 }# W6 G# \, k
]$ H7 m3 m+ {! T1 k" L8 k5 L% `
end
- V5 b1 w% e, y$ F. A1 P# G! c2 G% w1 |- J  ^" {
to update-credibility-list, M+ e0 t& o6 w* P
let i 06 @  {0 y! W8 f2 q, s, ]+ r
while[i < people]
' l3 c( x7 Y+ L* H! M6 n[* J* o7 \6 O" ^' f, F
let j 0
; A: W5 Y) K- A" X0 Hlet note 0
' [# r4 L* z& @8 Q$ `let k 0
3 b8 s/ w2 W0 O6 K4 U;;
计作出过评价的邻居节点的数目
9 E( G9 l  B1 }/ m2 j% G2 J- P' rwhile[j < people]
4 h2 }3 O; j; j1 @. n[
6 R( y+ y1 y8 f% o% o# Sif (item j( [credibility] of turtle (i + 1)) != -1)9 H' F! L! e# p
;;
判断是否给本turtle的评价质量做出过评价的节点. O, [7 y5 M7 p: S, w7 d* [
[set note (note + item j ([credibility]of turtle (i + 1)))
( S  K6 E& @$ ^( Z4 I/ d0 Z" n;;*(exp (-(people - 2)))/(people - 2))]

% S1 F5 i0 b1 e& H; b4 {/ `set k (k + 1)
! c% j0 J5 g8 B. V  ^3 m- {- ]]1 O+ R3 C1 A" s: z, ]* r+ h$ z
set j (j + 1)
+ q5 y8 x; K7 \" M& h5 [  j( p]
( F) D* _: p  Z! H. [# Z0 N0 aset note (note *(exp (- (1 / k)))/ k)
" l$ a5 C8 r8 _, ]$ {set credibility-list (replace-item i credibility-list note)
. o5 B3 N( \3 Fset i (i + 1)! g9 y1 O$ |* V
]
3 d) ]7 A$ `7 u' |' _end8 w  O8 |6 V  \* ]& U

" ?- O; |; O) Z) u* jto update-global-reputation-list
: Q0 z+ B- }5 P/ e$ D2 M; qlet j 0
( O+ z' H# [- _2 n2 _3 ?0 pwhile[j < people]
( G1 S2 j* n1 @# r[, S) B3 N, ]( r, g. F
let new 05 T# n$ X, F9 v5 ?" }
;;
暂存新的一个全局声誉+ Z% K% d: B  N4 y
let i 09 F0 ?( w" I2 a8 O6 L0 [
let sum-money 0
, H. j6 T$ X  C; m7 }% blet credibility-money 0# A7 L# I9 o& A6 W- a3 N0 `) M7 F
while [i < people]
, P# z4 M5 D3 h7 ~[* k9 ]7 e( J2 l& t) U/ x' q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  n' U; f4 q, L$ p* ~set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 Z6 A, i3 z5 [1 E! z" m$ Zset i (i + 1)7 ]& ?3 r, ^" a( n8 ?
]
& S+ m0 T5 s8 p4 J+ ~9 b7 glet k 0
4 E& O( Y) L1 {/ n0 qlet new1 0
5 v) {  Z  J$ q# Ywhile [k < people]
0 x6 {: ~  D* i2 O[1 w# T4 j' m. T% e( ~8 n
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)+ ]; ^7 u2 Y8 p( K2 W" Y6 B  u
set k (k + 1)
' g. Y9 h, a# W4 m; B7 ]]
. k4 a3 G4 |+ B2 C+ `1 @set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 Z$ r! o5 b4 n* F1 ^* d
set global-reputation-list (replace-item j global-reputation-list new)
% v; d  `8 P% h( }  R( I# W, s' tset j (j + 1)
( P5 p+ I! @( }( ~: K, f% |1 j]# \3 F6 @$ E, @! F
end
. E' N# j5 Y0 l- ~4 R, q1 \/ j/ k# j& }6 _2 x

* N6 [" k8 \3 t( q; r5 R7 Z# w/ {# }/ e: I: b
to get-color
4 _6 x* x9 m* F) I% k# D# L- @) P) _8 [. c3 P. j% M
set color blue

: g. V! m7 j4 fend) d. ]% [0 A* _8 S" w

2 S$ E9 d$ C/ V, b/ k( rto poll-class
: [( [" q& X- U8 X4 O6 u3 J% cend
" r5 B/ K, X- p& A! N% e8 v7 t- s/ @! W' l; x9 Q8 m
to setup-plot1
9 E. A( d; l9 W  ]- r7 E0 f1 S
3 T. v$ g. F# k# m9 ~( Hset-current-plot "Trends-of-Local-reputation"

: j( D- i; S$ F: R6 y2 d* C2 t  L: M) \  |/ r$ b
set-plot-x-range 0 xmax
0 N. V0 m: u( Q& {1 ?: s4 g' [
: M% Y9 d/ F1 `4 K. ~5 Z
set-plot-y-range 0.0 ymax
0 k6 p3 }; m3 C8 f* X' R7 e2 V
end+ c$ m" O8 p9 ?& T8 D* ]2 ^( ^
& g8 T0 |" v: C$ k
to setup-plot26 w4 X0 o6 o; b- ^6 w: S
- T) V; D5 Y" J4 t
set-current-plot "Trends-of-global-reputation"

, k5 P* |$ U# m
5 U. y, N0 \0 D# O  sset-plot-x-range 0 xmax

1 M7 g( `. Q; K* w* y- ~5 g: V! }' L3 ~$ N" N' b
set-plot-y-range 0.0 ymax
/ h7 ]6 J- O; z( X5 U. z& K* ^% e
end
* O+ ?( k1 R  x. P
, e) j( m3 i: dto setup-plot3; {. b# |, d; V3 q: e6 k1 `; P

2 t2 Q7 d) X8 K) x* Y+ }7 j9 cset-current-plot "Trends-of-credibility"

5 X( E; r. _6 s
+ B- \$ d+ s  A9 Z0 {# K( }set-plot-x-range 0 xmax
9 ?3 ]% _3 o" R5 F
. O* }# d4 |8 k
set-plot-y-range 0.0 ymax
; N. t4 G. J. J6 q! V. R+ T6 y
end6 @6 K" l; ?! o7 ^+ D7 ]/ s  @
% ~; m6 s7 t7 d
to do-plots
$ l6 F; K' F' @5 `7 M+ V2 u0 W) pset-current-plot "Trends-of-Local-reputation"
4 |5 W' ]7 E6 S7 |1 ^0 T) s7 r' e" Mset-current-plot-pen "Honest service"; v3 W: t: v0 t/ d0 |
end: T# j9 k. m% y8 @; A

! A+ k$ b! _4 ~. Q9 R/ z- A9 o& B[ 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.
; j9 I$ ^/ S7 x4 Z0 x2 c
$ p$ h3 r1 R7 x$ r+ `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, 2026-5-10 06:28 , Processed in 0.024590 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