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: 11808|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:. x& l  W5 e$ `, A/ _( C! f
to do-business
* D/ Y, O) ^4 { rt random 360! ]* _, _- N- R
fd 1
0 M& \$ [1 O8 Q. Y3 r1 f ifelse(other turtles-here != nobody)[; o0 x4 f7 Z# m9 U; Z
   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.
$ a: F# C! C; [4 N+ K   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % S9 M( X3 x1 R% ^! U$ a4 p3 ^
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 T! d3 A* B" ?! R5 e+ }" u
   set [trade-record-one-len] of self length [trade-record-one] of self
9 k+ S, f7 C5 Z* L2 r# V   set trade-record-current( list (timer) (random money-upper-limit))
" t( u/ X7 r0 r, ~* S6 s  }  b1 T
2 Y0 a- N' [/ L# Y7 ~6 l' X% H: c问题的提示如下:
$ z" g/ f7 T; [  z( H$ `0 J5 ^  ^  `: o$ l9 S6 k! k
error while turtle 50 running OF in procedure DO-BUSINESS
( {% n# i( C+ N# o! G: V  called by procedure GO
/ z; ^0 N% [6 |: o6 @* U1 AOF expected input to be a turtle agentset or turtle but got NOBODY instead.3 }" o& Q8 n/ f4 k, c( d! n- \9 E
(halted running of go)
1 r7 B+ R/ A/ q' `! u) x" [) ~7 @/ d3 Z  G  D# O8 i
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 \0 Z' N# [% w
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! O( J9 L% A: i+ p- R, F
globals[
+ ?5 s5 q# M! F3 Gxmax# n, [: a4 d4 o1 ]/ R5 d. y2 b# ~  a- U
ymax
5 ~3 ~, k1 v+ uglobal-reputation-list
$ Q8 U8 U' P# o( u2 x" F  ~" E9 o4 x. Q/ N9 ~5 Z
;;
每一个turtle的全局声誉都存在此LIST
" Q' I! Z. h1 ^8 r% P1 |credibility-list
/ q$ l& i4 l1 V: ]7 A- [;;
每一个turtle的评价可信度
& [9 [% ~0 M6 r! F! c) shonest-service6 L' g) c  U9 p4 z* t/ _3 d; ?
unhonest-service
% r2 X: ^4 N9 u! U) c/ Moscillation, |! v- X6 m' j: e+ R
rand-dynamic  n, l. M' t- U* }% n5 F9 ^3 q
]
, j4 }6 l8 z- i9 H: f2 j7 Q( r' g3 P: ?: }6 h! V* w
turtles-own[
5 ^7 |1 c3 V/ Y7 xtrade-record-all7 S# ~, b9 |) r# @, f/ {5 j
;;a list of lists,
trade-record-one组成# d8 o' O% ~& Z; F7 O: |
trade-record-one) L. _2 Y. a# U7 A2 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6 F. J1 @" z) s; Y2 K! q/ g
6 `. J. |6 K$ r: y; x& ~4 {; e
;;[
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]]
* D& m% I" Y% J; ~$ G. D8 f0 vtrade-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]
. h3 o8 U; h% i9 w* z8 O' j) ]6 jcredibility-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
2 J: @: J" f) L( ~/ p6 M" K& Uneighbor-total
: R1 \, O8 u0 u2 I5 G;;
记录该turtle的邻居节点的数目
1 \7 M- n: d- u# A- I+ ]: H& H. [trade-time
! P5 D- C9 Q( G* e: L  l;;
当前发生交易的turtle的交易时间
0 ~9 o* b" J* T5 g. fappraise-give' P7 f) h2 F' d! }' V. X( j& T
;;
当前发生交易时给出的评价
8 z5 l" X- J, Q; A, `9 L$ O" Wappraise-receive
6 U/ e+ H  _  x;;
当前发生交易时收到的评价2 a. {5 _  U' k9 {' B
appraise-time+ i2 A0 S6 E& }& O  P9 [/ B5 |
;;
当前发生交易时的评价时间
  a' p1 @( {" n) f  s7 [6 ~local-reputation-now;;此次交易后相对于对方turtle的局部声誉. D) z  M3 [' b& y; P; V5 q2 R2 @0 J
trade-times-total
: x$ u  K6 @* b: p0 R;;
与当前turtle的交易总次数3 N& R8 C% k8 b5 x
trade-money-total
/ U- I/ d4 B6 C;;
与当前turtle的交易总金额
- e8 c  \2 H7 ~1 m5 P2 {8 Q5 ]# s- m  klocal-reputation
) O3 l: {, H6 S0 m* T" O, [global-reputation
5 w. K8 C: ^, P, ~$ M% Kcredibility
5 g6 M' ^, j3 K2 u;;
评价可信度,每次交易后都需要更新+ Y7 R* g4 V/ j# g. B
credibility-all, }4 K/ }7 n8 @
;;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
# a/ o4 @. A" O! D  A( W
0 c/ ?* {5 Y% e5 M3 [4 L;;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
7 Z" b7 n  I* [6 X) U8 Ncredibility-one
9 q3 {: J2 L( ]6 w& I( ~( y;;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% ^9 G+ y  J/ ^& `
global-proportion+ W0 u+ x* S& P& B: b- C
customer* \3 y0 o, f2 E
customer-no' Q/ E1 n' P8 \+ p2 c
trust-ok. B8 W2 g1 v- D$ W8 Q
trade-record-one-len;;trade-record-one的长度
+ h7 Q" h- B# F0 D* i' G% O]
) L. |9 W! R- K5 k7 g/ ?" v( B& `1 G# H/ X3 r) r
;;setup procedure2 V0 K& E( o# Z* [
! b3 E, C$ [2 L9 p9 A- Q& I
to setup
+ |7 K. q. u: Q6 o2 G6 {' ~; _3 ?4 N$ ]* s% R: m+ q
ca
: z! c$ [* q: J1 l
1 ?( o7 S  m/ E# V2 v6 n% h  _1 @
initialize-settings

4 ^! U+ `5 y/ y* {! G
) \$ F4 l. g8 O  U$ @# e* Ccrt people [setup-turtles]
/ o0 z, r7 ^, s, x3 |( e- W

& C1 K$ a5 b/ d8 ~reset-timer

7 F0 D+ H+ W$ v. n0 U9 O- u* E0 t9 P) d$ p2 o
poll-class
+ Q: ?1 C! D; `. p( r: }+ U( L
( {0 d7 U" N, I- B3 H. v
setup-plots

/ T% J+ `! @% _1 S% i1 x7 P% Q2 C8 C9 j+ Q& s' w4 h
do-plots
$ m: I' E' W1 V7 l; e7 O# M" Y4 h& A
end2 N' Q) z# s9 W; }
" f  t# }7 x3 \8 f% o8 G0 M/ ]% w
to initialize-settings3 `' M, h' s2 F1 O7 ~% |- F
% }- t5 k3 z6 A& Y! i+ i
set global-reputation-list []

- C' {, K1 x. S4 {
: L/ ^& {4 C4 I- l  X# c3 p0 u. eset credibility-list n-values people [0.5]
9 w8 C5 x) G' W4 N
' D# J% V1 A* I
set honest-service 0
7 t5 W+ a3 n( b7 Q
4 O% E3 w' V0 c3 [4 @+ g+ }% h
set unhonest-service 0
( N2 Z) c9 H' S' _% P3 y* I
1 K' F/ P+ g& a3 T& ]
set oscillation 0
1 \/ O1 L% J6 |% P5 L
- f# A* X) L4 D, o
set rand-dynamic 0

1 D% h2 ]7 L6 S7 t! K5 @1 `7 i5 Kend4 f2 r8 n$ M" ~' y: O7 D6 n! ]: g

; s3 w* x+ m0 F* r  @7 _- G+ E! H- Vto setup-turtles
6 Z# r* r; ]& f+ f7 r* Uset shape "person"
. C5 T$ |& M8 d! C  n3 t3 P; ~setxy random-xcor random-ycor2 {1 |0 B- ]8 o9 u* e: L
set trade-record-one []
( `" G4 K! m" Q& g

2 n8 W% r3 e! J4 l% \! d0 Y, Lset trade-record-all n-values people [(list (? + 1) 0 0)] ; i" H& P3 w; y: B; e
  v( d7 t5 c( F5 p& g0 O/ m. O
set trade-record-current []2 \. o; S/ K# ^) Q4 j
set credibility-receive []
7 _' f* n5 a3 s! yset local-reputation 0.5
9 y8 Q, e- D% Z; N% dset neighbor-total 0) N' O# X4 y. g9 k" p
set trade-times-total 05 H& }& a/ P( L3 N7 s
set trade-money-total 0
: n* m/ W* m# |) r2 Vset customer nobody* Z& t0 @0 \" {9 Q
set credibility-all n-values people [creat-credibility]9 |, [8 j9 v1 x
set credibility n-values people [-1]
3 z( M6 ^) I3 k; I7 F8 rget-color; x5 F+ t4 \$ S- L  o3 w0 U

$ O2 ~/ k; ^0 Iend
. Z, Y2 G3 ~! d
5 ^. L9 D  h0 f( J2 {! Dto-report creat-credibility" B# [; {5 ^; C* N
report n-values people [0.5]3 i4 X4 n8 w4 B
end- Y& f- d% Q% T6 f2 R. |8 Y) }0 j

5 V; m2 R( C$ W- h; c3 A; z* W1 K3 Cto setup-plots0 ~& O! y5 B' c( H0 E/ Q) ~2 n

# l- T$ @' [4 u4 q4 w3 ]set xmax 30
  \& o# h; C8 c3 L9 |6 z# R
* m. C: L) y& B& {
set ymax 1.0

3 r' O4 Z" {* E( z- j5 @
; @: e. K0 i, ^- \7 \# m3 Pclear-all-plots

7 i% z' f; q" W$ A6 `( _
6 L" K% g  g4 P- W0 J0 U& wsetup-plot1
1 N1 R* _  q2 h7 C7 e4 ?% M. R9 t
; U5 X; }" p5 Y
setup-plot2

7 J7 v6 @+ S6 V! y; Z- p% ~8 L) t! x8 O1 C. a: ^
setup-plot3
0 `* i0 u( F$ a3 b: d
end! O+ t6 B0 ^$ W" V

, U+ q. {; T% g/ t& N# d;;run time procedures  P( h: U9 Y) c

9 @" A3 F- [. {+ i" I1 nto go
1 v7 i4 I/ S% j$ e/ i+ n/ J8 S; J/ R- `4 g* b1 w( J
ask turtles [do-business]
' R5 B1 @$ J' k, U: ]
end
) W6 {5 R$ S! P2 [9 s
+ \- J, Z& y# f  w* U: ?8 eto do-business
! O- Y* z6 |) f' n% X8 k- y
- W8 ^0 T8 l% a; Z- B2 L
' i7 C0 v# W; s! z& Y2 p$ o. q+ k
rt random 360

, `! {1 `" U+ m5 G
9 d# N3 u# s6 J: A# wfd 1

% O! A; H7 j4 U( T2 C* E, @1 p) c! e( }
ifelse(other turtles-here != nobody)[

- L8 `' G7 D  [' N  r5 T& u8 Q( J2 i* Z0 M( _
set customer one-of other turtles-here

/ \: Z" S  t% W( G- p0 ?# ^* ]$ O! m' J4 R' a0 _
;; set [customer] of customer myself
$ D- z$ X2 e0 T
+ |' I9 {& q5 e$ S9 b
set [trade-record-one] of self item (([who] of customer) - 1)
! z! g" H: p* S: u[trade-record-all]of self9 \) u0 Y6 O* F7 B: q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ V% {' m6 N: w4 R1 N" y4 e
2 D9 g- Z$ n& c. a' Q& |( Zset [trade-record-one] of customer item (([who] of self) - 1)# g; |5 y& h! _, O* o
[trade-record-all]of customer

; o6 P: ?# w- L: E
/ Q' {4 w4 z7 H* H' w2 r7 ~set [trade-record-one-len] of self length [trade-record-one] of self

% H3 \3 R- Q% _: ]! H1 @8 Z) v0 E: K: q
set trade-record-current( list (timer) (random money-upper-limit))

0 ?3 C1 x9 G* ^/ p8 r& D3 e' w4 t! m
ask self [do-trust]# ~! p8 I  o4 `6 f
;;
先求ij的信任度) u. i) M. F: L* _; b

. V' D2 P+ w# m2 U/ N( Mif ([trust-ok] of self)8 `! x3 w* j! z: x7 Z
;;
根据ij的信任度来决定是否与j进行交易[- K0 e2 b. r$ a
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ e% a! a) f6 z# t+ ]3 X
! l0 S, p+ }; p1 C4 B! Z[
, E% R" `, P5 N; E* m
% ^0 r2 z: z1 R+ b
do-trade

; a$ N5 c7 U0 W' z0 u
0 |/ q" e: u* h8 Gupdate-credibility-ijl
' |! |8 G5 y2 ^

4 V( x* W8 E. Eupdate-credibility-list( Z. e' M' r. X" t+ f0 C

8 ~: `' ^( X& _6 s) g6 n+ J9 A3 D! j8 q& \1 `8 [9 P
update-global-reputation-list
: H" j/ d/ E+ f/ s: r( p4 e- j
4 K2 B% m9 k  o2 X* c
poll-class
& C, f+ E# ~* P2 b
- [& u" m! [  x& }$ |
get-color
/ s8 P( I; c8 s" A; i( O/ d

( v, ^9 q% p# `3 d7 U' c5 b. n]]
/ w5 P3 {( I( Z3 u) g
/ n' N' ^7 N% U3 k* E, F/ };;
如果所得的信任度满足条件,则进行交易
: j% ]# w4 L; Y3 z
* P2 I: P  P9 o[

5 F3 R$ l( a- g/ ~- O
1 s7 P. [8 r1 D: W0 [6 X. |( w& N1 Lrt random 360
% b% n& ^: q2 D& n# {  m' H
/ S2 P$ c- ]4 j9 V2 N
fd 1
( K6 g+ v2 e9 P. q( v, V
3 }% R, t/ Y' t
]
- Z* ], p+ C. G# {# x; y3 @% E

2 \0 S8 k) S2 G6 Xend
( n1 q% Q$ M( u: ^+ ^" m3 b1 U( x' O

6 Y/ _5 y) g5 W4 F0 g' q" v0 C* Fto do-trust & S% ~' J, X& b% v" f0 x  R: b
set trust-ok False
- d1 @! Q; C; e, o% O- r& _2 Y) `' L+ ?% H6 Y
1 ^; l. Z# f; S
let max-trade-times 0
7 y/ t3 j, Z/ M5 [1 }& z/ ~( yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& {2 E8 p+ y5 b! Elet max-trade-money 0# N5 a0 w2 U; ]4 L5 [8 \8 J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" F0 d. w( w9 g9 ]5 u: I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
4 G& M  r' ~& N2 w3 K# J
9 b$ d9 U. b/ m3 r

3 {( N- H& o( C9 ^0 B2 D1 l% hget-global-proportion5 Q7 L& R3 y, Y
let trust-value
5 o9 q" l7 L2 t% s' J" `% T/ Elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

( R. y2 ~8 O: Y9 m& qif(trust-value > trade-trust-value)) n. ~. E! R3 h; Q6 A$ Z
[set trust-ok true]3 \: n# n$ Q& B
end/ z9 Y( W- s* L9 y, e' d# X1 i- B
) ~# N. Y8 S3 C) Z6 j% e# O
to get-global-proportion
1 q; O" Q* b0 q5 xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)& B# e7 j7 u: ^0 U- G5 {3 P$ i  Q
[set global-proportion 0], I* w* a0 \& h3 {" V+ H( R# K- d
[let i 0
0 D. Y2 N, Q( H% h  }- {- Plet sum-money 0
* k. D  `/ z5 n9 \while[ i < people]
  y& ]  q  L; {[0 i! K5 O0 U5 U: s1 O& t1 {: @
if( length (item i
) F4 o' B+ N) @, i2 K' l[trade-record-all] of customer) > 3 )
1 J! v0 c' P7 |( c6 {. ?. T- [
[
; K5 @; ?) _% `- q" rset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 x3 _7 E* v$ k9 ~]9 \4 F4 B4 p9 f/ {7 w
]
+ G- v+ C2 _+ y% {+ N9 q3 f$ `let j 05 b: I7 {! j0 }9 p, u9 k- ^
let note 00 [  p' F  ~6 i% r2 ^
while[ j < people]- B$ {: H( v. F% ^: L0 Z0 s0 V
[
- Q* _5 d. E# r- N. d# c- M7 Qif( length (item i
2 b$ I. i8 n1 \& n[trade-record-all] of customer) > 3 )
2 o( O% G8 W! Q8 V* t
[
  x; [' H. [9 q- A6 Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); q6 o: u: b- l0 Y, ]- e
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 m( ^3 n& M: ~4 k! u/ `, u9 L[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 M( E) S# B6 g
]
3 g4 v. I3 z. a* `0 u% d# R9 y]
( u0 u1 F( R" k/ xset global-proportion note" x7 G" h8 e/ z6 i; f
]0 H3 D: Q1 i: Q' ]/ \, ?. v& Z- q
end0 W( |7 p. }6 A

# y" s) h5 t5 |* Rto do-trade+ g; |1 z! J/ y: J, V8 f: E
;;
这个过程实际上是给双方作出评价的过程
- z/ g1 Q( s5 @' g+ \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 i- ^6 ~) A2 w2 {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& P0 y" h, ^& h! g; |" I5 kset trade-record-current lput(timer) trade-record-current( d0 H5 V$ ^% R+ e
;;
评价时间  Y+ h7 g7 {# ~4 Y( M. T
ask myself [
8 S! w( O& S9 Z) G$ N; Pupdate-local-reputation) q; ^" b7 \2 l. K7 ]
set trade-record-current lput([local-reputation] of myself) trade-record-current
% c" x/ r& D2 j1 ^: N]6 @. o: F2 U/ Y" Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 W- X( w# R9 k) K: d4 o" a1 S
;;
将此次交易的记录加入到trade-record-one' p0 `) z: R2 t, j, i
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  [) M* R" V6 elet note (item 2 trade-record-current )
% O7 g% r; U0 R8 e7 pset trade-record-current. m% u" v6 t  \7 U
(replace-item 2 trade-record-current (item 3 trade-record-current))

. k2 L3 z* c$ z5 |- |set trade-record-current
9 i4 j1 e9 u  z3 Z7 H7 n(replace-item 3 trade-record-current note)
* K8 J( w9 x+ O/ g$ H- o# R, G7 S5 d0 c. h0 {

6 B- X8 F) Q" d2 B# @- }ask customer [
4 J! m9 D7 [! l% K8 k. H& E4 Uupdate-local-reputation6 l! j" N. t) r+ ?* Z
set trade-record-current6 j5 @; H* O% E6 w% t1 H! z6 C+ i
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- N9 B* t6 f  B1 [7 v, Y  G5 B
]
7 S5 h# G4 R  P2 f4 s! s2 `: u8 D  p1 C% y: r

8 i4 S$ Z! K9 C: T' ^! o+ j8 Wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  d. P3 E0 b) ^/ r0 z
7 l1 `% D- c5 g, n( Y0 t
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' T: {! P( A7 p% m0 v
;;
将此次交易的记录加入到customertrade-record-all) v& `- e  _- v8 W$ ~) j1 S* [5 M. i
end! ]; k9 K9 d: Q% Y& u. Q8 D& l
5 I3 n  a0 c+ o! [2 ]. M! n
to update-local-reputation, U+ P  B1 P3 @0 H( F' z! _$ K
set [trade-record-one-len] of myself length [trade-record-one] of myself. D$ r5 ~% e6 D* Y! p- u

4 @1 E4 y; X6 z4 I' R
' r0 l8 X4 I) l9 G4 ^- U5 o;;if [trade-record-one-len] of myself > 3
- y7 ?, Y0 H  y2 h
update-neighbor-total( f5 L8 j( v" _- M7 k3 L
;;
更新邻居节点的数目,在此进行
7 j) E$ k9 x/ l/ ^let i 3: ?  h* c9 v4 \/ v. H1 b
let sum-time 0
  l" F; E4 p$ `4 W/ ^while[i < [trade-record-one-len] of myself]+ x$ o3 }8 s" D: w: f
[0 L& }; ^# x& F  J2 P
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# |4 O5 R& E) Z0 sset i
2 l" C. I$ q. F8 D1 P( i + 1)

' p! y* i# j5 Q: H; Z]
( r$ F5 g( ]% Q" V: J1 E5 l3 ilet j 3
# y6 M# N0 T# \9 Mlet sum-money 0
7 }! W* c: S( N* ^" gwhile[j < [trade-record-one-len] of myself]
1 [! T9 l; A+ K0 P, f9 T[$ N" ^0 m7 U9 d; E4 d5 z
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)/ T: D: \' c/ V" w1 O% U
set j1 j) K" c) x" s8 \
( j + 1)

% g# F! r8 ^0 q! |]
9 o* O$ x, v1 m+ X0 H; m3 f/ Nlet k 3
$ d' l8 f3 H2 R7 m) |let power 00 C& c9 Y& G0 {& ?
let local 0
% a. t* Y5 e7 `; f  r9 \while [k <[trade-record-one-len] of myself]+ c& r3 E$ B( y/ t
[% X% s/ U9 c& ~4 i0 C3 E7 w, W) L* Q
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)
4 k  ^* D; r0 `# v7 d1 ~; zset k (k + 1)
4 V9 [$ P) S9 B2 W, ^$ @]
' [1 m% J* U2 Nset [local-reputation] of myself (local)% B7 K+ c4 C2 w  ?: `' c; x* ]
end4 h# a8 `4 p+ a1 z8 |6 j: @
: R9 N; |* e! R5 z4 j" @. b
to update-neighbor-total; ^+ K9 Q1 W; _! ?0 k

2 C7 d) }, E/ A" y5 kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: J  Y: J  Q3 w( j9 b9 R1 J8 C: [2 [4 z, [) b8 m5 p9 H! v6 G
3 ^" O! Q( T& E1 ~
end1 I" a) K. p3 U' L1 i
& e( V# G# S6 A" g$ c
to update-credibility-ijl * u+ Z2 q, ]! t" f

& r. s+ a! @7 D% 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。
/ C+ B* c* }- v4 f. ~let l 0" g1 D' v* D4 v2 Q& ?1 P' k8 `
while[ l < people ]
/ g+ H4 v- R, y5 z& l( q* B5 a- k;;
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
0 q, B8 U9 P# J% X# z# i4 q[
4 h# O. q9 l2 a& g- w  u+ |let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: N5 V4 d0 P9 c. ~/ M! U% Yif (trade-record-one-j-l-len > 3)! C# H7 K& S( a2 r, h4 y
[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-one7 q7 v# ?1 r4 V; E' f' p- a# t
let i 3/ k- s  t! |( n
let sum-time 0
# ?2 ]0 P) F1 v1 {( @+ twhile[i < trade-record-one-len]8 t- L. ]5 }4 s& K. {4 H: q/ Q( H
[
. ?/ k; k/ l2 U$ i9 Z5 sset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 e! B$ K) @" i  v' [
set i4 \6 U' u5 W. ~* Z9 U5 [/ ]' t
( i + 1)
( H0 H. `# z, J  u* W8 Q
]
& \2 M: y& N' C% o. L6 ]2 B0 Blet credibility-i-j-l 0
4 f3 _7 K5 u4 e1 B& F;;i
评价(jjl的评价)
! [; o8 [& s8 Z& w2 Dlet j 3/ a+ I- D/ l7 X" u* A6 E
let k 4* n: L' X5 l0 B
while[j < trade-record-one-len]
* c, ~4 D8 E7 x. T[, `( p9 I3 n2 \+ h
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, B9 Z1 J0 Q4 i- t/ 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)0 Q# _2 q  U2 D3 |" d2 {: \
set j5 G0 `0 m; Y8 Y5 p  H% V- s
( j + 1)
" B# O: ?% o& a6 T6 u; e" ^% p5 p
]
0 R* Y) s8 V" _, ~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 ))
# A  h, ?! x! [3 b' [/ b
0 i: \' ?6 t! m& p* R

1 d4 v+ X: Z5 N$ K; g6 Elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 R, q1 }/ I1 y( x* O
;;
及时更新il的评价质量的评价
6 g, {4 L* @# O/ [+ w3 kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 S0 d4 n: I$ G9 nset l (l + 1)
% k& ^9 v" W6 P) h: F4 S' i* w]
" p1 g* k9 b8 E) ?4 U1 `end, V: @( U/ B" S  z
) Q# T" m" K" w& e4 @: k9 T* F: S+ O" G
to update-credibility-list
( e$ P* w' u: S/ w: p3 Nlet i 0/ b' u6 T7 |/ k0 u$ b" o
while[i < people]! F) K% m9 n& b8 k
[
* G6 T. T) Y; r9 k! Y* C- Plet j 0* i# z+ k8 n: C
let note 0
. U7 z6 G; o2 {4 T9 Nlet k 0
+ F5 V  J* G- Q8 @8 _;;
计作出过评价的邻居节点的数目
  O5 z4 }, o" i+ ~2 }while[j < people]6 J+ K3 s" M  y. l
[
1 G7 Y9 F: w' w- {if (item j( [credibility] of turtle (i + 1)) != -1): f% Z. @4 s+ D8 x$ c/ n: m/ ?
;;
判断是否给本turtle的评价质量做出过评价的节点
: I! m3 v( Z- P[set note (note + item j ([credibility]of turtle (i + 1)))% ?' r+ f5 B; @: w
;;*(exp (-(people - 2)))/(people - 2))]

0 e2 k) B2 x" k# eset k (k + 1)
% q+ H0 I! S4 T; I+ H' y# c]% P/ O4 i5 _9 N# c- s
set j (j + 1)
& \$ |  G+ S5 V0 K6 z]; X: s& V0 ^/ F6 _$ M$ E' y
set note (note *(exp (- (1 / k)))/ k)* y! k2 a$ }8 L) D: j, E+ g
set credibility-list (replace-item i credibility-list note)
: X1 ]9 o0 ^* l' Z9 ]) i; kset i (i + 1)2 h. t) M& U2 x" f( }
]4 a' j0 y; P. G, H* I
end7 N' A4 n1 C* l1 ?3 V
$ J; U; }9 q9 I7 U5 c
to update-global-reputation-list
- w  R5 Q: S. E: jlet j 09 D) y! n2 q7 r' M$ t
while[j < people]
6 O* Y' r) J$ @! p+ @' Y  \1 e; T0 _. K[" |% ^7 V1 K7 a/ e
let new 0/ ~. ^6 ]9 h3 @. B
;;
暂存新的一个全局声誉7 X+ R9 }: V  k; l8 _
let i 0
: b0 [% F5 P0 Z  U$ b7 jlet sum-money 0  {  r8 |4 h' O5 r+ ^' B
let credibility-money 0
! I, N# v0 ?7 i9 l0 h2 Nwhile [i < people]( ?4 b4 V" D* I% S4 ]' ?
[
9 B) P. x4 O$ @" D3 i; kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 j; Z( w) N4 }4 |set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 f7 l. G9 }8 }# @" F, _
set i (i + 1)4 m7 x0 o9 m9 I: N0 c; U6 |
]( I. H+ t! v+ k9 ^) g  D8 C" }
let k 0+ C. p- I4 }7 {+ m
let new1 0
. q& e1 K8 @7 [& ~$ f5 _' \while [k < people]0 C4 c! `. \. J1 T: x& Q6 Y/ d5 j% ?! a
[
+ `. f) P' z7 e, \9 Hset 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)0 c' a% |+ ]3 s8 S7 s( G! d& |
set k (k + 1)
/ Q; P+ c5 O' e* B) P]
) Q2 @8 l" g4 v7 B* q+ K/ [set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  ]% j. C: g5 N) Jset global-reputation-list (replace-item j global-reputation-list new)
5 |% [, m" t7 B& r% ]; M0 jset j (j + 1)
1 ~' d% Y1 A1 a. \]
) D- _* |2 n% pend$ h2 r9 f4 t- [0 M8 M

+ f& @) _( [' _" J1 C- @# I; p$ d$ B" ^! h2 c' G$ L" K
+ ~- `+ N- p& j$ B* z3 i
to get-color0 V# M) M6 C5 J8 d- i) M7 \
; l4 Y: N$ A5 a0 o# O& U( X: J
set color blue

7 w( l/ K! ^7 F6 K  E7 d( j0 Qend
, ^% q" @  S, T5 L9 T9 ~  |+ W2 I
4 S1 O) p1 G( N$ P3 q& j1 Nto poll-class5 r3 t# g& \6 b# j2 l2 \  O
end
# O& T( H; V, l5 ?
; H/ e# r/ x7 G% ]# @to setup-plot1% |0 l# G. \6 B3 T9 t

& l; U) K+ J, `  Mset-current-plot "Trends-of-Local-reputation"

" Z+ A* u& f* ]" k; D8 Z% a2 p& u* {' P8 b) s+ A- @
set-plot-x-range 0 xmax
+ Z7 [, O5 n) e4 m8 L
$ _% j2 ^1 i" N2 m9 ?
set-plot-y-range 0.0 ymax

& s# P0 r7 J4 r7 Jend
  }7 N0 j* ^6 q+ b4 \0 P, D
1 k! o7 J* B1 f+ qto setup-plot2
% f6 D& x( w5 A" W8 v9 T( c
0 C, H5 _) E: R. o. }  u5 ~9 O  xset-current-plot "Trends-of-global-reputation"
6 `: `1 {. ]. V9 T( Z, d  v
1 K, |: Z/ M2 J8 g$ A  k
set-plot-x-range 0 xmax
7 I2 H% `. x% X
1 [' j, }4 u  e( K6 x* b9 ~4 T& M
set-plot-y-range 0.0 ymax
0 Z7 {/ `) C3 Y6 r  \. W
end1 M/ S9 L/ H$ x7 g& m

4 ]( l& ]/ d! z# m# O+ l8 {to setup-plot39 m# F$ s7 E9 o. b

$ h  J/ t8 N; ^) {set-current-plot "Trends-of-credibility"

* a/ L; A! l9 u1 E- E6 O# @
1 _, R# M) v) k' s. m9 z6 L/ \set-plot-x-range 0 xmax
& c$ D2 A1 L9 F3 {
( N+ M$ I: Z2 `
set-plot-y-range 0.0 ymax
( p! X- Q5 N5 a: q$ L
end
# g1 f- F1 G* l% X* S
# c1 B6 W: f' N. Yto do-plots9 k0 b+ n! n, ?5 G
set-current-plot "Trends-of-Local-reputation"
2 I- ]- N3 R7 e. Iset-current-plot-pen "Honest service"
; b, g0 D) f+ ?& Xend% Q4 y% I) v- q% Q$ u

5 V7 o3 X( \, s, l7 w% |5 M[ 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.2 s* s: F: B" \; P5 H- k
, A$ N  \5 [6 K$ d1 S: K
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, 2026-2-2 01:33 , Processed in 0.024799 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