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: 11357|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 C0 N& C+ i3 b9 |( m' i
to do-business
" h% y  o# y7 x# z% b" n$ _ rt random 3609 ~% G* _# A  p. G* I$ D9 q/ h
fd 1% `. |4 g: K$ ?) Q- t
ifelse(other turtles-here != nobody)[
& F1 e& h6 ~3 l$ {+ w1 S& T( n: Q  S7 c   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.
# p3 D3 ~( z: E9 Y2 d8 k9 ~" O   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 ]  W' ~8 c, q+ Y* k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 }9 n+ T1 |0 d- C$ U   set [trade-record-one-len] of self length [trade-record-one] of self" l6 s' C+ w1 z& W& J, n  K; N
   set trade-record-current( list (timer) (random money-upper-limit))2 K7 j4 D0 P: Q6 G) b
, a0 a/ l7 A7 I9 E$ O/ T
问题的提示如下:/ y" T' u) t- b$ ^/ ]5 L0 I$ N
4 d0 P  E. D6 n3 P1 S% f
error while turtle 50 running OF in procedure DO-BUSINESS* g  u& H" l  \3 L( e' u
  called by procedure GO  p- I1 N( {+ o! |5 U
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
' G8 ~$ ^; A4 L( y; I7 ?
(halted running of go)
4 n3 G/ e4 v9 R8 e8 M2 F4 o
2 ]; Y2 |8 ^! A# ]; [  d7 E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~~
- T4 \+ f0 @1 k8 T/ O9 L4 s' 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
) s/ S( e1 P2 Qglobals[( h2 p6 w' l# b
xmax
, C8 @1 L- i0 S$ F1 w1 v" symax
* d. D9 S) I0 {6 L1 L# T# hglobal-reputation-list
+ T8 W* T7 q7 p* D9 ^
2 D% |  K+ h% W- V;;
每一个turtle的全局声誉都存在此LIST
4 z; D: ~) {. k/ H7 ]: z' zcredibility-list1 i& b) M7 |( `5 L, Q2 M* K
;;
每一个turtle的评价可信度
  q& g$ v' [3 r* F6 U2 E4 I' Zhonest-service
: |, D4 u) g; _9 yunhonest-service* b$ m3 O9 }2 V0 ]1 c0 h: n4 \
oscillation
! r/ _" j* R4 \: y4 ]% Drand-dynamic" ]  U7 ^+ E4 K3 N; n' P1 h+ }
], q2 ^/ Z/ G- ^  j

( F4 i0 C* T( g8 R; b, }" {0 wturtles-own[
9 O% S- C. h! q: c- \6 t" d! Dtrade-record-all# ?1 W% f0 @5 o' f2 V* g8 t
;;a list of lists,
trade-record-one组成* ^7 Z) z' f/ D  c7 M" T6 L, x
trade-record-one9 H( `, j% D( `6 k( t. k
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
- k5 q5 r: P5 Q$ u% L/ ]! q* _
) ?1 [$ a$ Y  z: x4 s4 M* V  i;;[
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]]
! W- p( `$ I  Y% H4 j5 strade-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]
% S: w6 c" f  bcredibility-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( u8 K) c7 t3 r; z7 n4 \+ o
neighbor-total
, p/ v& h$ o" x" C, F7 D# S. N9 d1 m7 R;;
记录该turtle的邻居节点的数目
+ T+ }8 f1 Z/ Q. Strade-time
* z  B! c7 z* @  W! Q7 K+ u' a( ?;;
当前发生交易的turtle的交易时间
2 R4 g. U* b9 c3 t2 }( G; [appraise-give
" W7 p3 w* b# Z! D/ ~;;
当前发生交易时给出的评价
. ?) |: E1 z; a$ N/ Y' h' {  rappraise-receive
% E; z  c7 P0 v; O3 A) y7 W;;
当前发生交易时收到的评价% r$ x6 H3 k4 m1 ?5 Q
appraise-time! k4 D1 M5 _) h, Z8 [; N( c3 h4 P
;;
当前发生交易时的评价时间
' u0 |7 S& S* s% clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉$ y. M% {7 A9 t' r1 ^
trade-times-total
+ c! C. B# W# c$ t4 d  s;;
与当前turtle的交易总次数
# [1 h. q' H, m+ ?5 Ltrade-money-total3 `# w0 i+ G" N" f3 G2 ~
;;
与当前turtle的交易总金额3 H  _* Z) Q/ k; J. D- z& e7 E
local-reputation
8 l, X% Y) {4 p, q7 K& N! Cglobal-reputation
! ~# `+ P2 |9 G. E* r' Ncredibility; ?- e, X: [- |' t/ d# ?* w
;;
评价可信度,每次交易后都需要更新
4 e( Q) [- B& K0 b8 i6 wcredibility-all
  Z9 E. }# j: d' t) c;;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
" g( A/ X) N% C3 b0 }
0 n" q4 G  s( K" H7 ~;;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
5 R; i3 u  p# S' ~1 dcredibility-one$ A' h+ i0 n* ?0 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
5 b: p) H; s  G6 K- l. H! N$ sglobal-proportion- M4 v" ^- Z0 {! J7 U
customer
- h, W5 c3 w. a, Wcustomer-no
6 }" l8 s; J! Ptrust-ok
6 b6 T+ u: @( |/ Otrade-record-one-len;;trade-record-one的长度
3 j  L6 _) B# r9 y: W6 d]4 Q8 B2 B: Z& j# {5 W( T
' ~6 u/ p0 u; Q3 U  Z/ ^; O' q0 |- T( _
;;setup procedure) c8 m, @2 R  f& O

9 Z4 T% Q5 ?5 E! n7 p- N9 Sto setup
7 N3 n7 a% P" s
  a# A. D1 T3 z$ G' Wca
0 U9 C  ^" \- X& d

' ]) f& J- x- sinitialize-settings
( g$ }" v# M) K9 f( p0 ^
7 r+ i% \. E% s" D8 a8 p9 O& e
crt people [setup-turtles]
3 F0 b2 Q  J  X
% a: F0 K: W; z
reset-timer
+ d: A& P3 @; [, m& n
! E) C' B4 @# X: A% T
poll-class

* L; V, c/ _, @) o5 J
3 d* J+ i  H8 @6 k. G3 ~9 }setup-plots
/ D4 Z. W8 R! d" `& [8 V

6 ~* V( ~) q2 A- v' Ndo-plots
9 N" g  G) ?" g$ z* L0 ^2 s  `( C
end. D9 |' G, X" L; U; U6 T$ g/ {4 L
: i9 o# g3 z1 b2 E
to initialize-settings
8 e0 y# h. g; X2 u* G4 q
3 J% a$ u8 D. m3 C! yset global-reputation-list []
  K! x, h- a% `8 N" E, X) M

8 E7 p0 H* w% p3 D  t3 Aset credibility-list n-values people [0.5]
+ z- x( J. }* a8 q
! q( @/ f6 N0 w! U0 G1 q
set honest-service 0
7 i$ |9 X% l+ K; ]5 g
9 E: |3 M+ Y9 r+ M; j9 h3 c3 s
set unhonest-service 0
4 {% p2 c# m8 Z% Q. B

/ A; _" J/ h7 \: nset oscillation 0

! [" [4 \0 g% F- C6 y' E. Q7 P! S8 X/ O+ Q; f1 Y
set rand-dynamic 0
4 k5 z5 N! [; s" b$ u! C
end) z2 R& B. F+ x3 f4 A
, ~% ?/ X5 }2 k; E0 y. H( O3 T
to setup-turtles
" T- d* T8 s! f0 vset shape "person"
/ h( L- H+ Z4 t& U( Y: Esetxy random-xcor random-ycor
& ^* @# ^' T0 z0 y6 w' w# p6 sset trade-record-one []5 G, r1 f. F4 Q& R8 n) u' I1 s
: S% r/ s/ e7 u7 b1 Y0 ]
set trade-record-all n-values people [(list (? + 1) 0 0)]
" c. y. j# G% v
( R7 A, w5 E5 z5 T( H" |8 x
set trade-record-current []
4 Y& L/ x" A) [) i* s+ g) nset credibility-receive []1 {4 w- _- T- d# x% C
set local-reputation 0.5
+ W& H8 O+ g9 J6 Pset neighbor-total 00 `- A* _/ X1 t7 D# H6 V9 x! o& z4 R5 W
set trade-times-total 0% G" [- P& [4 L8 f: D# I4 c
set trade-money-total 0) {" d8 [. i7 ^) _# y
set customer nobody8 {0 S+ h- A1 ?% D& k5 g
set credibility-all n-values people [creat-credibility]: C2 f) ]- k  O# W8 k# j. d
set credibility n-values people [-1]$ I" A8 r' I) F2 d$ b: T7 S( R: {
get-color
+ |" k" Y1 z: v6 `8 T; C0 e

4 M% ?* U, u. h* v3 Gend7 s7 [* C$ C  U7 d
2 K6 K6 {/ ?. d% X: T
to-report creat-credibility
7 e2 u8 b' C1 T1 ?8 Xreport n-values people [0.5]
& w. x0 e0 r4 \# O; yend
8 T" e1 m% L5 z- n' r" H1 X3 F, E7 `9 ?- Q! j
to setup-plots
; Q8 Y/ D4 e6 O# ^9 ?' d0 p! a
( {. L* ?! y; w" e7 uset xmax 30

3 ]: f( z  C; q9 W8 x9 E7 J
0 _! n8 `9 M- h9 |, ~set ymax 1.0

' {  s0 Z' [5 X
8 p, C- \& n& S! u. F1 Eclear-all-plots

. [- F; B1 X8 n+ H; Q- v' p0 p% W& v/ y  M
setup-plot1

9 x9 @: T5 V; h/ s. Z" Q4 c0 T) E
; a# n& p' a3 A$ x: ^% hsetup-plot2
! s: _5 O# K  J8 t" E9 q

+ R0 B: T6 K3 r& @7 gsetup-plot3

; I- K1 w$ d5 Kend
. m. a( ^' W% R2 P4 K; D
) W. p4 |3 s1 D0 V9 K( U0 q;;run time procedures
( S! L  N  I9 Q$ f2 n' S3 h5 x: A$ M) o( Z8 q" s
to go
3 }6 N0 ]4 P3 }8 g: F9 R& ?+ P0 f& [$ p. x
ask turtles [do-business]

+ W/ z  `) e6 e# Q5 d" `( Oend7 M# q9 o! l5 m3 L6 I5 {

/ n5 P4 X% F0 _4 P: e/ ?: Dto do-business
4 H2 I+ R  V9 P7 Z0 E

; I/ B. T/ {: u/ V0 I/ F
" M6 Z9 ~2 }4 d3 Drt random 360

7 K6 m2 q# P, N1 q! a) F/ ^9 o4 Q, C: [/ Q/ U! U  N7 q+ L
fd 1
. i) e: X( C& K: v

: C; F* M3 F% qifelse(other turtles-here != nobody)[
. E/ T& B! g# e
5 b& T. R2 m! N2 u
set customer one-of other turtles-here

$ P0 h) i5 @+ H. C4 }  ^  L$ K$ X+ w5 F3 e/ W4 X, ^. b
;; set [customer] of customer myself

3 |* h  ~4 y; S% ]! v/ n" n- z
% L$ M9 q5 n# t0 ]set [trade-record-one] of self item (([who] of customer) - 1)3 v- Z& V$ h% k# s. F: X, D' d
[trade-record-all]of self  t8 ?/ Q2 o" p* r! P
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( B7 d0 X5 N) P# F! ^4 q: O2 w; T7 p7 H0 Z
set [trade-record-one] of customer item (([who] of self) - 1)$ G* v4 ?' b9 b  l1 R" d
[trade-record-all]of customer
+ |5 P/ @2 t. \

' R+ C1 H0 n' h& S1 Sset [trade-record-one-len] of self length [trade-record-one] of self

; U5 F+ G( e/ N: K' s" Q8 i: X
7 ^; s3 z$ u$ iset trade-record-current( list (timer) (random money-upper-limit))
1 H9 A& Z$ o. U& j  M
% F1 M2 x! \* u: l" ?5 U9 p% c
ask self [do-trust]$ V  r$ J8 `8 ?/ y* [6 Z
;;
先求ij的信任度
: o# `2 {9 X+ P2 ]2 o  Q3 K: @$ ^' P) f- \2 v
if ([trust-ok] of self)" R. n+ S1 J& J" b
;;
根据ij的信任度来决定是否与j进行交易[8 _3 U2 q3 _! x2 K0 i
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself( C5 |* P( G8 A& d( O  r

! q" |- L- j! h5 r7 |3 A) c[
- C" H# I* i* R
. @$ g' o$ L2 ^2 I
do-trade

) z3 g# z, L; T& H9 j0 `
- P# X% F/ E) {  `update-credibility-ijl
4 h: |1 k$ P6 ^( M3 v( ]1 B
0 @: q/ B6 `- o# ]% }0 S
update-credibility-list
8 {: X9 g  z  b2 N0 X- l
7 Q' b" P# Y2 e, O+ y% `* W

4 ^% X- J1 x: z; {6 u  q1 c, @update-global-reputation-list

  Q: n( z2 \/ T: F' m3 |1 {" |' j$ a( \1 m1 C  g6 R) ^
poll-class
; w3 A% x% K& g

, y8 u1 g4 ?9 X2 r3 Tget-color

0 H8 e8 P2 d: A3 r2 a/ _- b; _  E3 _, J
]]: T$ z  J, |1 X0 C1 o

# G) q- L' `# U; W- Q9 g;;
如果所得的信任度满足条件,则进行交易9 ~4 [/ I+ Y: J! n9 X; w% O
- U& w  ^$ H5 B
[

4 p( {8 E. ?. _9 I+ C4 Z! a
+ P+ X% R8 K  D- e5 ]# J, h% }rt random 360

% S  r) P( D6 M8 ^( z! v2 B' m; w" K/ f: ^
fd 1

4 y% U" d6 ?. A0 |( W) ?/ T* M7 i
) S* D+ F! J+ S( e  Q7 U]

) S' l( u, e2 X( \, n8 K; h8 l/ n, }
end

3 M! m5 f1 H6 ^
0 e" v" I. ]& T+ J+ Fto do-trust + F8 B. A0 }4 i" f3 F" A" ~% }2 P
set trust-ok False
; g9 A* I, k4 [$ _. b" e% H- Y  W! E2 W' i9 @$ i

$ l7 `: ^4 g6 u8 S3 A) Qlet max-trade-times 0# E; s  c! h# P$ a. h
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ e& O0 V5 Y* ~let max-trade-money 0; M  \) v9 T  z* c! n0 D
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, W5 U' h3 r: E, xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 R+ N( Z7 l. i. \, A6 K/ h% [. e$ r! x( Z

& h/ Z. n* v, fget-global-proportion
5 R9 t9 B# K6 nlet trust-value
& I) y6 `/ N1 h1 e+ K8 k# n+ Rlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

/ ~. j( I9 o$ E) d& y  B2 Y/ \7 Zif(trust-value > trade-trust-value)* c8 I4 X3 E3 R* ~0 q7 K* p' a$ }
[set trust-ok true]
3 p4 v# z6 }$ P% q2 N5 Qend$ s4 o' S; v$ q2 B6 |7 K
6 Y$ q; [/ n1 a& n8 g' T
to get-global-proportion
" o2 r" \# g- s+ H; jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), m0 R" b3 K1 O% ^  N  x; \- f
[set global-proportion 0]8 @3 ^( G( Z( h& S  U3 d% \  E
[let i 0
+ c4 W! z0 e9 d2 y( jlet sum-money 0. R, a) M5 r9 Q2 z4 p$ x
while[ i < people]
5 m: O3 \, {! [- O0 |[; u8 E2 Q7 r' a# Z- T6 e; ^$ Y: g
if( length (item i
) H# W/ S3 Q2 s( {/ Y! ?- G& N[trade-record-all] of customer) > 3 )
' v+ a. ^+ r! l; q+ U, f  o" y, I
[/ R+ x% U, U. V/ Q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 O# ]6 I3 |; I5 z3 _]
7 }! Z' Q' c, U. e]/ b3 w2 ^* X% m4 j9 X
let j 0+ P' o4 E( x$ \+ I
let note 00 A+ R$ p7 K  ?: j* y
while[ j < people]
2 }7 c" {0 M: o2 I# v: y9 V[
6 q& Y% Z' b0 F4 A: w# J9 vif( length (item i# o/ F& ~4 l1 p+ z/ a
[trade-record-all] of customer) > 3 )
9 p( ?  ~+ o$ v1 C
[$ j$ u, B' d1 ^2 d% g+ {6 d8 c
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 w5 l2 R$ \$ h2 S: s
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' t3 k: |- a2 N[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
* c% i) \; C5 M0 S2 C]: B- h" p6 V' c" X
]
" K2 A6 k1 N% Qset global-proportion note0 R; {# j* A3 ~5 C' b
]: D, j  \, i8 Y6 Y" q$ F
end
5 W7 h4 d* G- i) I5 L; E
) s# N9 K6 Z  D: g: x( }% ^5 o% [to do-trade$ }( i  M7 f( [
;;
这个过程实际上是给双方作出评价的过程
' |; ~' ?# i" }0 n$ S: V7 ^  v7 Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) f( |7 L: U, `8 {' _" O2 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  t# r+ B0 V3 l% Iset trade-record-current lput(timer) trade-record-current' G! `: f# J* f2 I3 H! Y4 g, L
;;
评价时间
" P" f( M4 P( Z% Rask myself [( M) D1 d8 J6 a, z. p4 q
update-local-reputation
: S9 C3 o1 r$ h" I1 u2 }# Z- t+ Xset trade-record-current lput([local-reputation] of myself) trade-record-current
) @) r: s4 K9 e$ R6 k]  n  }% m- ^9 a4 O* v. J3 L
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" H" |9 c; n& ?9 F8 c0 W+ Y;;
将此次交易的记录加入到trade-record-one+ l- D' Q! y  [" I4 J# O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( C9 L0 T7 ]9 y8 z* hlet note (item 2 trade-record-current ), f( d* }( Y$ c$ ]; V) {, y
set trade-record-current
" W5 I. j6 j2 v# w& \0 v4 @, z(replace-item 2 trade-record-current (item 3 trade-record-current))

8 e0 K0 H5 G4 B8 v9 jset trade-record-current- J+ ?+ U  V. b1 k
(replace-item 3 trade-record-current note)( K$ j  m: w2 h2 F' y* @' u, R
- D! @, A9 K" p

4 w8 c' y3 T% Y" R% Jask customer [
- y9 {; O* F! r9 n5 _update-local-reputation& ?7 u) m' Q- Q% E( t1 z% W$ p* v
set trade-record-current
4 L' u; d4 A) _0 \- G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 Q2 |0 Z+ ~0 {]( X5 y# {' @' `

  {% [. B& t; v6 V% A- d

( w# Z; X. ]. w6 u4 j4 T. gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ |( i4 }7 x) t* f
# J( R/ H; ?( p- g. b
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" f. i3 K" R% }7 w, J; L;;
将此次交易的记录加入到customertrade-record-all- |9 x  Q6 @. E( `: r) Z
end3 b# Z# M% u* |+ j

" E0 y. Y5 {+ q% p$ v; k* fto update-local-reputation
5 |  T* m+ z9 x' yset [trade-record-one-len] of myself length [trade-record-one] of myself
9 P1 j* g3 m* D. r) l% m% y" D5 Y$ F# d1 W3 J# `) ]

2 i- j# R/ @, N: r; {0 q5 o;;if [trade-record-one-len] of myself > 3
3 n, g- N' W! d8 e, }
update-neighbor-total
0 z+ o$ @5 p1 b+ t; U;;
更新邻居节点的数目,在此进行- u, i& ]( u6 h" G" `
let i 3
1 V6 \& L- C% O5 V( Jlet sum-time 0
8 M# S( f" Q( ]3 a% Y2 w' W" Wwhile[i < [trade-record-one-len] of myself]
% l  V: D- e$ V" K! w' W) P[
, `, c4 R2 z( }" _  W* }. A* V( rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 F1 r2 b4 D( c. g. S0 s% ~set i: O2 x3 {  d% v9 D6 f, j
( i + 1)

1 U, v; A* [3 a6 f9 E: b: g]
) J# g( }+ l( O$ l6 n7 Hlet j 3
8 o6 u% b/ F( z  J1 @; a* blet sum-money 0" a' M( q* j) l+ U
while[j < [trade-record-one-len] of myself]8 c4 i5 R3 s* d* R9 |4 r) B
[
+ a) T  K# ~- aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time): c* `! |% _9 ]% u- Q1 C
set j
' [' P( H( c7 e' P1 j) {6 G0 B5 i( j + 1)

# c% a& [' h2 F' Q! U]* x% s$ w7 z8 ^# J* ~$ r
let k 3
) [, c* T: B  ylet power 0
8 x$ w! m+ _1 @4 E8 d! P+ T' d, ilet local 0
( w: w  D& P# o) Xwhile [k <[trade-record-one-len] of myself]# [; [" h% D3 e* x
[) B( E" T+ A% j0 h
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) / C& ~4 c  ^( h
set k (k + 1): t! i' @* R3 r+ u
]- d4 j# \9 W6 J, t* u
set [local-reputation] of myself (local)
# P& }$ F7 a* E% a: p  _9 lend
1 o2 ~; }3 B/ ?/ N2 X% O8 Z2 ^) n; R* \9 {  _: ~
to update-neighbor-total6 m; T* K6 M( S9 E; i

/ ^% T+ g$ n: q6 k) [if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
) X* [, }. }4 M1 ~  B) J4 k9 M/ x, {8 g

) R  V2 N+ O, \" X0 Q; |' p' dend
0 k% g9 I% N, x7 y  m! r
# ?4 M* W" O: R$ \# Y# dto update-credibility-ijl " n) a5 M  f3 f  k8 J7 B
: I& M$ Z5 L+ J8 C
;;
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。1 V$ R# S( f1 E
let l 0
7 C% h9 ]2 T3 v/ S* k1 Gwhile[ l < people ], o8 m" F; a7 H* e
;;
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; C/ v/ U# n% I6 ~; o% o
[% A3 S, Z, \2 r! M( J  O1 E2 M+ [
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' b$ }2 R3 |  x3 ~- }if (trade-record-one-j-l-len > 3); w2 ^  i6 Q: M. W& O
[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-one3 ?0 k9 r* m$ @# N2 t- V
let i 3
" w* \- [# m) K2 S3 Llet sum-time 0
+ a$ k& a7 S4 @2 Rwhile[i < trade-record-one-len]
# v* U6 f+ ~# L[
% H# v- Z  @$ F+ ?, Q: c8 Uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 u- ~# K  p9 s* {
set i
3 f  m9 Y, \) {' ]( i + 1)

+ P( e& `5 O4 B, b- L# ~* I]4 y2 K9 u* n+ i. m
let credibility-i-j-l 0; I; d! m; W6 ^' q. Z
;;i
评价(jjl的评价)1 L! m  H# i9 }/ A- T$ j" K0 k% Z
let j 39 h$ x" Y3 L' P2 ?) X( m+ i/ _
let k 4
' p' K* ?6 f9 u+ _$ o7 D; g* Iwhile[j < trade-record-one-len]2 Y# ]4 O( P+ ~/ ^( `# r
[* M$ K# ~1 c7 R8 d/ e
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, i/ K' P, _8 I( W6 Q/ R
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)
* p4 L3 O3 h8 \0 V% Xset j
; J; N1 m. g( F5 ^" U* J2 r( j + 1)
% M0 C( i3 y0 G( q
]4 d! W4 ?( @  B. S6 t
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 R& x$ S3 H( J0 H% {1 B( [0 V

) l) V6 L. a) H3 R! {7 w
. n. B8 g! t7 s" x& o
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 x' p9 k+ D4 U3 c5 Z. M' R! p;;
及时更新il的评价质量的评价+ ^9 T& Y+ |0 M  W. G) @. h. x& d
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: Q/ T& j9 h5 V( V; h6 O
set l (l + 1)4 b( m9 q7 v, H# {" `
]
5 \7 q$ r' q. F" L3 Zend
- i6 X5 O  ]5 P  o' i; M: X/ Y6 o$ L7 [" M
to update-credibility-list
% q7 [& [$ j& qlet i 0
* e  ~6 V. L$ Q% Y, Kwhile[i < people]
4 ?* `1 X: W1 D# i[
; T& t$ k8 t6 q( \$ B. T0 nlet j 0
, E: p) P# E) ilet note 0
' ?. d( z+ d7 \7 P7 C. Ylet k 04 b+ ]2 c2 ]5 y3 {
;;
计作出过评价的邻居节点的数目
+ H' A8 \( v6 i' D% E4 g& s, D% \while[j < people]" x) e2 Y3 n# p: y
[& h/ X; @. g' E8 a, r0 P5 n; _
if (item j( [credibility] of turtle (i + 1)) != -1)8 E5 j/ o& \+ S( d1 D
;;
判断是否给本turtle的评价质量做出过评价的节点
; l: V# E! |- E8 V& \3 e[set note (note + item j ([credibility]of turtle (i + 1)))
6 Z, O8 s( I7 V- ]& F;;*(exp (-(people - 2)))/(people - 2))]
7 j8 z  O! B/ ^! s
set k (k + 1)
9 W4 O3 D9 a+ ^]7 O, U+ P( {% ^5 |  p; C; E
set j (j + 1)
  _9 J$ |$ P& [+ W]; u5 y, d# J  }8 o6 s/ X
set note (note *(exp (- (1 / k)))/ k)
; I3 f( x2 U5 ?4 {. jset credibility-list (replace-item i credibility-list note): \+ w$ g* O  J0 J% ~& N2 ]6 T, a
set i (i + 1)
( k" n8 @" x$ p]* W8 A  E# W' H) i% Q
end
: ?. o; b9 H+ t9 j9 [  }" d8 q! A+ G. E7 Y  d8 ~& X5 Y7 ]
to update-global-reputation-list; y$ W( D2 ^1 s
let j 0
; B! c3 C. Q1 h- K  Awhile[j < people]
, o( J9 I- u- @; u) f3 m! b[8 D2 E' M+ W( j8 X
let new 0
/ U/ r3 w) [# v( u" o;;
暂存新的一个全局声誉
2 O: B7 o2 W8 Elet i 0
9 y: u# D/ {+ T% g$ t8 Elet sum-money 0% g" Y2 f5 s! v: `5 I
let credibility-money 07 w0 h! M  v' a% q$ [# f$ _
while [i < people]
  c$ c  Y+ b6 j: ^[0 `; Y3 o$ h0 ~3 K, F. [( f5 _
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; U8 r8 U& f' ~- sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 J" T/ S7 C8 S( Z6 L8 e( d2 U
set i (i + 1)
6 F/ r- _6 T4 H2 i- _. ~]9 j/ y& a& i# x( A$ Q3 A, V
let k 04 `4 K6 k; _% `
let new1 0
/ L* e8 y" h5 t# ~. Zwhile [k < people]5 p" g" R2 s* A: q* u! V4 x
[
. ^7 m  v) _; X) 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)
% D, k. h0 P4 V8 t5 ~set k (k + 1)
3 M+ F2 ^$ v: q7 v; k% J. w  s]% S* H) B1 i. L" {/ t
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 d4 U, ~& d2 S4 r" M0 I9 kset global-reputation-list (replace-item j global-reputation-list new)
' h4 R& A; a+ `- w6 C. ~3 sset j (j + 1)
  L/ g. F" g! L3 C  H$ B/ F]" `5 @! f( N+ T4 l
end9 ^9 I) L) ^/ I, G8 C- e& |0 P& i

1 N! E$ X  b, V& i6 I& K4 v2 I: b& S
+ W0 v" @/ J$ W; b* K5 D
/ I5 {  h$ v" o5 M  gto get-color8 ~  Z8 u2 Z$ ]( c& W8 Q* Y

" Y6 N2 F) j+ c5 xset color blue

  n" ]! `7 K1 e3 ~end
; O( a& }* F$ o$ j5 ~  l& J
0 h; l) E: v7 cto poll-class
# r, \+ |' P6 Oend
4 v8 P# Q+ S& l9 F4 t' `8 M8 d
% ^- v/ C; v$ d  S, K; K6 ]to setup-plot1
+ U4 N1 v# F6 h; ]: T, f9 U
& E7 S5 l0 e6 Y4 Mset-current-plot "Trends-of-Local-reputation"
( E1 W' P* ~5 ?" R: z  i) ^

( c9 v  I; r/ b: d- Rset-plot-x-range 0 xmax
, O/ L) l3 \: k. b1 B; y
1 y( O( T, a2 `+ M6 u& h
set-plot-y-range 0.0 ymax
% q* p. x' c8 D( i
end5 U5 x0 e; D( }+ W

* z4 h2 Z5 T: V" qto setup-plot2
8 r8 k  j, w6 u( g) p. n" p4 y- O1 S% u
set-current-plot "Trends-of-global-reputation"

, M6 Y/ M8 b2 M/ b
% G6 {) x+ n0 B" W7 f* a3 Yset-plot-x-range 0 xmax
" j1 G7 z1 \5 J7 Y' l( E) t- c
' G0 R- p& N) }( c
set-plot-y-range 0.0 ymax

( J) V! N+ u$ T0 C( X! }' eend
; H1 e7 }: X* s3 q- _
, a' W0 k( `4 V7 q1 {* [$ f+ o' Wto setup-plot30 g- I' `7 H: V
2 _/ N. n9 d2 `- w  E; q7 N
set-current-plot "Trends-of-credibility"

: h+ S1 G: b6 P5 [! _/ q  ~1 `9 C8 Q# l
set-plot-x-range 0 xmax

0 u9 |( c+ e5 |1 h( }, s7 y. w# E+ @. V. z0 i+ I0 t6 E, a8 ]
set-plot-y-range 0.0 ymax
  i% d1 a& e- s
end
7 X7 s' F0 l2 [# K- H
+ V* D6 [. m/ p  T: \1 Xto do-plots& }1 X! Z, E# U8 h8 ]  W$ l) V! o
set-current-plot "Trends-of-Local-reputation"( P9 z4 v" ]$ d6 x
set-current-plot-pen "Honest service": e* q+ [: L3 W' j# U4 S. A1 N
end- X) ~& S' u( V, V* L! m

& O) q! n  P" B% K/ r[ 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.
( i0 W/ u( w6 U7 ]
4 R/ m) Q3 \9 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, 2026-1-14 20:22 , Processed in 0.023018 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