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: 18375|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:
, u) w' x. v# c7 W$ o. ^' Cto do-business ; Y& ~5 x. D/ x8 G% x
rt random 360& Y+ b. \: P$ O0 v0 B9 x; Q. c3 {5 l
fd 1
9 x1 R; O" V% _& @) U# e* [ ifelse(other turtles-here != nobody)[
$ {6 a2 d  @+ m/ V, e   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 p& s+ l5 ?2 [6 `: k+ ]
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * x9 y5 a* `+ Z. `4 w0 i. Z9 z, r6 k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( O; ]) U6 t- _: L6 b. H
   set [trade-record-one-len] of self length [trade-record-one] of self. L7 Q. H* \6 f* @% _
   set trade-record-current( list (timer) (random money-upper-limit))
' C+ |6 L' P* e6 l4 z( T2 [
" i! r( C4 F. M5 {问题的提示如下:
% J! b) G$ Z7 F2 n$ [' X7 i! d& b9 j6 @* A' _
error while turtle 50 running OF in procedure DO-BUSINESS
! _2 ?5 F1 Q( P( y" j+ @9 z  called by procedure GO. C6 L5 X# d7 i" M5 @( s
OF expected input to be a turtle agentset or turtle but got NOBODY instead.; R& w  j% v& s; W
(halted running of go)0 H4 u1 Z* b/ P- d/ p% }

* i3 k7 H( V" t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~~
5 d8 e+ {3 a  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
$ z  |6 }$ j* e' Qglobals[* j' u- \0 j2 _9 @* H& @4 t) |
xmax6 D. F+ M3 \  k+ W! p! m- o
ymax
8 n& A. j$ _4 |3 [( @9 R5 o6 wglobal-reputation-list/ v  s5 e% n$ @4 @7 S7 M( y0 b
9 ?- E# g4 j% s/ T
;;
每一个turtle的全局声誉都存在此LIST
& j  M  {( y) @! R9 @& I& dcredibility-list
; q  M( |: e' _6 d;;
每一个turtle的评价可信度* {) }5 y+ A! b# |. G) W9 S
honest-service
3 W8 U' F1 T) U3 S/ w  S5 z1 _7 \unhonest-service* O8 D5 x6 J" o3 t# \
oscillation. b6 I( g2 [7 U0 {' W- P
rand-dynamic
7 n$ R# @2 Q7 S; @* @]2 C% `* H; |! k8 D

7 H/ }  x2 y4 B8 g9 ]5 Eturtles-own[
; Y% m( R. ]# Q6 \* N# Etrade-record-all
0 e* `' A* D$ q4 T;;a list of lists,
trade-record-one组成. r$ V6 Q, p7 p+ G3 D; h
trade-record-one
! _- t5 z" G0 W. B- M) Y' g& D;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ b8 m. o$ Y2 W; F$ M
( m( }1 M" E+ S* j;;[
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]]: x* N. s4 s7 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]
2 {" ^  u" ~! i; i* a1 M" vcredibility-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
8 R2 U* Q* w, X, n- mneighbor-total
% r9 q) O& K' y* Y0 D+ ];;
记录该turtle的邻居节点的数目" M  h8 v3 ]! @  [' G
trade-time, e( _6 @: s) z
;;
当前发生交易的turtle的交易时间/ Z' a; n: p) e% v; u! E
appraise-give7 d+ _! A6 ~  c# _$ [9 F- Q
;;
当前发生交易时给出的评价9 [4 \! e8 [1 G5 S. O9 Y( U
appraise-receive; s+ ^; X9 k) j6 ~, x: [
;;
当前发生交易时收到的评价/ {2 d# o& q& W1 p% m8 y
appraise-time
+ W' [) |$ z4 G# [* |;;
当前发生交易时的评价时间
' @0 C# {% }0 K3 _: _local-reputation-now;;此次交易后相对于对方turtle的局部声誉; f/ F( ]& r( P! B/ p$ |* J0 E
trade-times-total
$ r  ~1 k6 d( i5 [2 n* u  M;;
与当前turtle的交易总次数
% I% m) V" I1 M- _' N  s: Vtrade-money-total
; O; b" o4 D7 ]' ?;;
与当前turtle的交易总金额/ V" N( ^9 m5 X
local-reputation, e/ V5 ?- o" v( d7 T  }
global-reputation& @. J1 F) ^& S) ^( T1 e
credibility0 B* i  t) b# d" g
;;
评价可信度,每次交易后都需要更新
; ^5 D/ \  Q" rcredibility-all
# j$ w( a: F2 ?3 _5 u9 x;;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
! D  ^0 Y) g- E" v% J- A1 S
- ~2 B- u6 h8 y- R- 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
4 W! I( T" f1 i6 \& lcredibility-one: j) Q7 k6 L& ~( C
;;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
% z4 ^! P5 @7 ^" Cglobal-proportion
# k/ S7 b2 _8 Z$ g0 |* y. Jcustomer
9 A* r8 J+ ~. f* V! Y: G' ~  Gcustomer-no7 _. e5 J: }3 i1 z
trust-ok
4 l( ~0 m+ y' A1 `- Ktrade-record-one-len;;trade-record-one的长度
) l; {! N& `' A3 r( K, r]9 l9 V" C! Y4 o, C1 S- d

/ @& T6 Z2 T1 Z- p/ H+ [7 B" l! K- d;;setup procedure! J- S6 s  U  u/ R8 y8 o

! J  `6 Q2 W' K% v( vto setup( l# x2 H$ z6 @4 M5 ]6 v( N

, y: P$ u( h% |" S# g3 n+ N& D  Vca

7 C. T  H& t2 t" a" O. W- x$ X, z, o, A
initialize-settings

6 E3 g5 ~+ m: E- N
( R$ S$ j( N0 @6 \0 i! q/ U/ y: ~crt people [setup-turtles]
) @& w- Y! \6 a# h8 s+ s/ H8 U
( u' }, w2 t' k
reset-timer

1 t. J' `6 v& Q" ], U9 b) H! l# G4 [
poll-class

7 X* E- Z- X' r8 `6 a/ C& r2 O- j4 N$ f1 L
setup-plots

2 E$ u6 @# Z& B. S2 |8 q0 V
5 J' T: `' c" z2 o: fdo-plots
" j$ W" b: i, i2 ^2 j. v
end# V. B# o% I0 ?" w5 D8 o
- Z7 R% N2 Z) Q, P. q$ m) s( W* P' B! V
to initialize-settings
& K. L/ q9 H0 @7 g# F' n$ K" F( ?5 W; z: d' @6 B
set global-reputation-list []

7 H! R  H# c/ b* ?
0 J2 b) u. A3 @" }set credibility-list n-values people [0.5]

4 e& P# l# ^7 S% }
3 M( k+ X( X  \6 a: h- d. Rset honest-service 0
& l8 s5 O4 I; K% ~1 a

, U* e6 l! [. ]5 Xset unhonest-service 0

  u/ b2 D3 }5 f9 `& L3 m) C) m# N3 H( B+ }. s: I& U% W
set oscillation 0

- v: ]; t0 J* g/ M0 T; ]  |' n0 `% }3 ~# s' p4 q% j
set rand-dynamic 0
& f# z+ [' X. M) G; U
end
/ i" x: d' m- V' e8 N0 ?) L4 l! N1 y+ |
to setup-turtles
4 ]+ e* Z. Y& `# U) J$ W" vset shape "person"
$ J0 I9 i, J* R$ }0 ksetxy random-xcor random-ycor
$ r9 N; P: q8 B& Q, L" nset trade-record-one []7 }- L" r/ J$ p: g! j
7 |) O* a) A! i8 Y% X3 c! m8 D: i/ S
set trade-record-all n-values people [(list (? + 1) 0 0)] ) t+ }) I" |8 |7 y, @
8 W8 Q& o) t9 M( [
set trade-record-current []
( L1 F# W+ d) X8 [$ b) J) D2 gset credibility-receive []
" S& k3 c$ g$ S: cset local-reputation 0.55 d' G) c, z& l
set neighbor-total 0
* @0 Y0 }7 w+ O7 O1 P8 {" X0 A3 fset trade-times-total 01 E% {9 ~* }- M6 {! J% X: e
set trade-money-total 0
& s- U6 ]6 {! w  U% Dset customer nobody
1 [. m4 v: [) m1 u- Nset credibility-all n-values people [creat-credibility]5 f3 {0 f4 r9 P3 Q
set credibility n-values people [-1]
& U: P: S) s$ G% [, s% [9 h7 l5 Kget-color
. \8 Y' n( A; D, [7 ]
8 I+ {. O0 o; H1 Y& O( z3 `1 y% V
end# b* m8 t  B) B3 D* s6 {

2 N  S4 m/ O( x$ ?: bto-report creat-credibility2 k# ~, Q2 S1 Q! m3 m
report n-values people [0.5]
; }5 _) U( W! X+ Fend
2 F: I0 x' ^' f$ U5 D- ?% Y5 j% a' s% w% v" N
to setup-plots
5 j  W- @# e. }, Y% T5 V, H1 K3 E. \% z! o  X2 L, M, H1 V
set xmax 30

* {( I4 M6 I! j7 B6 p
& U! ~% K1 t+ P  T' [set ymax 1.0

' ]0 e# u' G9 n  q5 n, Y) V1 |- J" Q% q, L5 Z
clear-all-plots

; m: k$ b& W6 l% P2 U
1 `( M# P8 F; w8 M* jsetup-plot1

. s6 s* w! R+ s* w1 V0 Y0 m+ M
; m! u$ X' B; Z* Wsetup-plot2

) C- y2 x9 V- k- n
8 d; v% Y3 U, h$ i5 n% vsetup-plot3

' o  k$ m# \9 |0 d$ t- A, ]" jend
9 c+ v! G% y& p/ j2 B1 b  p$ K
9 U5 n6 R2 Z  V% F" n' O9 ~8 q0 n;;run time procedures! L- n. g. O# x8 ?
5 O: Y0 L# P( w+ b
to go% @& t$ v' a5 G+ G, O3 }

5 |; \& J, ^5 y* `) S1 v1 aask turtles [do-business]
$ N! R4 s* y1 b$ C
end8 F' q" A- M6 S& J% U2 q( R
, f- E! t6 p' P9 I* Z
to do-business
8 Z2 m: F) \/ j) u

. a5 e/ S/ E0 G' M5 r; Y4 o7 j7 ?6 x9 Y/ ]7 A% Z; x" A  ~8 ~8 {% t9 U4 W
rt random 360
5 [" X1 r1 `, z2 H

$ k) w5 e" X- Y; R0 U# H; p7 l' R- cfd 1

3 s7 @+ T! [! s3 T$ J  a8 p  {6 p. p9 A; u4 k
ifelse(other turtles-here != nobody)[

% I" S3 D$ p& Z, W* Y/ f% P( s8 g( ^& H$ Q
set customer one-of other turtles-here

2 @+ |& E3 `& z: V6 ~$ d; t& B+ x5 ~( J& C4 v& o3 Q
;; set [customer] of customer myself

7 T5 x/ a2 A$ Q) D" P! X% U
: e# _0 V4 t5 N& C: Tset [trade-record-one] of self item (([who] of customer) - 1)$ E1 l* ~  _8 T) ?& P
[trade-record-all]of self/ I& A; G. c# c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 A# k  d3 ?8 J' s- n
. G  w6 q* g- n0 Q4 i2 Z
set [trade-record-one] of customer item (([who] of self) - 1)
" W6 {1 ~7 P! s3 c! F+ D" }- r[trade-record-all]of customer
3 x, ?& z. O! O: `9 C  D: D
3 w. A  P4 ?# a" q+ [5 q1 R
set [trade-record-one-len] of self length [trade-record-one] of self

0 x5 {' T" |* B3 Z0 i5 Y* m, |2 i3 i
set trade-record-current( list (timer) (random money-upper-limit))
' \) f2 c  g) V+ p
, c% y# V; |- e! I
ask self [do-trust]
4 B1 O2 d9 y( c' `  j+ h! {;;
先求ij的信任度; M, A7 `/ n) Q* C) R
4 H9 Y( B' o9 [& y
if ([trust-ok] of self)4 r" A4 ^; w0 F0 M
;;
根据ij的信任度来决定是否与j进行交易[
/ g" I5 T* Q! c( R/ E/ [" Yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  }/ ?! L/ u0 M. ^+ ]8 ]. u+ Y0 {5 y% R" n% R
[

7 ]& T! [. U! w, h2 d. S$ y2 u: p: f7 W: |3 f/ c
do-trade

8 X8 V0 D3 g% h& I
5 p& W" {" H% @update-credibility-ijl
! f9 z  u( }* [9 Z5 D
4 O( A+ |7 O: w# I6 y3 B' U2 m
update-credibility-list( ~5 E& B! Z: Z& ?3 G, o
' O7 X& N( G: S* E- L3 C6 Z( c: V' c
' A" l* [" d  a. [1 Q9 ?, V+ B5 P
update-global-reputation-list

0 _& [9 D9 P6 g, P( n" F: p/ O9 y/ W, Y" z4 b% S/ w( @$ b
poll-class

& b1 `( S3 i, t$ N4 b. ]" N
/ A8 l" w3 a% Aget-color
$ I3 X, l( b. ~4 e0 P- |' f

* f  |( N4 z- ~1 l( M. h]]+ ^; J# Y& E( ~, s+ t+ E& X- k

+ \! h' s6 N3 f3 v0 p; {$ Q;;
如果所得的信任度满足条件,则进行交易
* u# n, s1 @) e
3 M6 T8 D  f2 V- S, e1 z6 B[

) q; B  p* `" j& d* \: T3 b
# o2 {. K0 r( n7 K' n0 brt random 360

% A. c& g* e; X. J4 j- ~3 H3 x) y0 |) z6 e
fd 1
% B# i3 `3 r/ s0 v
# v0 L. v9 S: B
]

% ~$ K  l/ S8 I; [0 Y% m- t+ \: R( z1 |5 U
end

$ Z9 N: R; a6 L3 b( A; _# j/ [) E* U
to do-trust
  [# |3 G1 r  [( o3 Cset trust-ok False0 F8 \5 e/ R$ }& ?3 m5 b

+ b* M5 p/ A: P7 |1 ~
2 D! R. e% R" t; ?( X# ^
let max-trade-times 0
8 n! Q1 y/ W- Cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 }$ Y; ^: `; e+ rlet max-trade-money 0
4 [: a/ y: ^) h5 \3 ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" j. i9 ~" q- V% O. z: M! hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ E! N  h' e" `/ \( C. i! d% n% x3 Z  k* r1 H

2 [+ D0 l' q) D$ s- n7 q/ Gget-global-proportion
/ x  Q8 X4 b1 R0 Nlet trust-value
# b' q: e+ l0 W; t: H- W: s9 ^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)

" \) X9 d& G! z  }% y0 X1 Vif(trust-value > trade-trust-value)# x/ }4 ]/ \1 J, q% Y
[set trust-ok true]# G6 L" {3 a% u+ ?: U
end
+ k% @- |' s" Y$ Y4 i9 G' o7 S  G! O
5 R6 @: @, t1 \: U/ u4 l7 a; @4 @to get-global-proportion
/ P, ^0 m- n" O" oifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! g9 P0 }* n5 k, V/ t7 _/ W
[set global-proportion 0]; u! ?- y, r8 g# i6 _; P3 M
[let i 0
4 f6 u" D2 g" Q: U, y5 A0 |let sum-money 02 o1 Q- R- t$ Q0 ^( w5 b; k, X8 Q
while[ i < people]) c4 Y+ x  ^. f1 ?, a* V8 j
[7 u$ M0 {8 {: {1 U) j. k
if( length (item i
' _+ u! c# G; j: i[trade-record-all] of customer) > 3 )
+ A1 }+ I6 k: k/ C5 ^2 \
[6 g6 q& b' Z( `5 \# h- j
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ x  \0 W# e& ], j0 m3 Z1 R+ {9 A" X6 E]- c# N; [+ p# X/ M8 |
]
1 X. w( H+ d0 s+ clet j 0
1 P" g$ Y8 w$ i! a- v! R- dlet note 0. Z6 V9 R' k2 R; p6 b% N
while[ j < people]
0 d5 A9 U/ \+ N4 L( o[
# P8 ]; m2 O  P9 r& B: t7 u5 y- j2 qif( length (item i
( j" o$ Z( a# {3 H7 M3 [1 ^[trade-record-all] of customer) > 3 )

* {" E3 ?/ R4 l[6 K) K' _& g0 @# p! s" [
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ U1 @! g$ y6 K& n& Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ \! W6 o: n( d2 E) P
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' ^' Z  [: |* a0 D1 U
]
& e2 t9 d3 w6 }4 @]2 L* z1 T. q/ g' h* M; N  B; w
set global-proportion note3 D% w1 i) M3 P/ ~+ a
]6 b  Y# a  a7 F# F1 V
end% O* L2 Y' x7 c8 J4 T- G% j
) Y9 W0 e  H" Q# A( h) j
to do-trade" T; X9 {4 A5 {9 I, Q
;;
这个过程实际上是给双方作出评价的过程2 p/ h4 Y+ S/ B1 u  m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" X5 Z1 x( n0 tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 L( [( x) D1 o% n! uset trade-record-current lput(timer) trade-record-current
7 T1 |" c) _1 P* R1 P6 l;;
评价时间$ f1 e* N2 G2 @0 j2 d
ask myself [
9 `" q8 x$ z" B: C- Wupdate-local-reputation8 o( v# J3 q* w2 h5 t$ p  R) l
set trade-record-current lput([local-reputation] of myself) trade-record-current" k* J# @8 Z1 u( w. j# q8 ?
]. N4 k$ s: q1 a
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 x) K7 H: I- t; K8 F3 x
;;
将此次交易的记录加入到trade-record-one$ V% @5 h) G& I8 M7 }4 c9 M
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 e5 t, n: E7 b, }! B6 |let note (item 2 trade-record-current )
$ M/ y# J8 [8 _6 A8 @- Q# t! Z7 H$ ^& Fset trade-record-current+ `/ c8 J; s3 p3 j& p, C# D4 x
(replace-item 2 trade-record-current (item 3 trade-record-current))
4 h7 k3 }2 b% I' c; u
set trade-record-current0 k# [; Z% d5 L5 }
(replace-item 3 trade-record-current note)) N' t# r( f4 G  t, `/ S& o. B7 d

7 o; O. K4 {; T3 o9 `- q# G

  X$ R' \& e; ?3 task customer [* ^, X3 v0 v* ]/ Z0 c( W4 i
update-local-reputation
5 z  Z/ {( N8 g& ?$ |set trade-record-current& v+ l" v* L9 T3 i
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 x( p* L* K5 r/ V]1 X  r+ _, N& Z2 w! j' M

  R; q4 C' z, m9 a

! G. L0 B1 K8 q3 ]% \& n/ pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. t8 v. W! _# n% C' Q& o& L

2 h4 j4 S7 ~9 y" w! K; qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% b0 E' S: Q' B+ }, q- P" u1 ]8 s! I$ };;
将此次交易的记录加入到customertrade-record-all% X, c3 D2 f7 N" F% I0 p. k2 V3 e# a
end
9 I& A. U* A& }9 v3 }
, [* Y. f# U! T5 Q. M' Jto update-local-reputation
2 l- X+ f" a% J1 o* p6 Zset [trade-record-one-len] of myself length [trade-record-one] of myself+ y4 e& _" M/ s

: @* O* q3 q+ j! F  w" i
' t" M4 w7 ^  ?: y" F0 ]$ _;;if [trade-record-one-len] of myself > 3
. {; s. V# I& F2 L2 o( T
update-neighbor-total
6 ^, O# D4 j1 J" V3 f- t;;
更新邻居节点的数目,在此进行
  y8 B" k, G, B, ?: k% ulet i 3: l: F( }' n! ~# @: E
let sum-time 0" f3 @7 R, Q: F% f' R
while[i < [trade-record-one-len] of myself]! r( m$ j  E& I; F* p$ O5 B) d
[
$ A4 K6 G0 J1 p8 K, V! p' ]) v% Z5 ?( eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 r% `/ W4 o, a5 @set i7 G- |+ p% s+ x& q1 b% N% _
( i + 1)
; c* r/ D( D. `4 m* E
]0 ~% K" U7 U7 v: j- Q8 c
let j 3
# l4 c+ _4 \  E$ f0 L* Xlet sum-money 06 x6 B' E* y: X" K$ f
while[j < [trade-record-one-len] of myself]
# ^! H, x, R, q; c# r: }9 r[, ]! D" Y* r+ V# w8 L" {! ~
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)
7 W' z5 |* Z' M2 J2 vset j
0 U% Z) Y) h% T8 J4 I( j + 1)
8 ]- o% Q6 y5 L3 t* F" d
]
( \5 v. A" X: n1 \: U/ w$ clet k 3
. u% @( _8 b# o. Olet power 0
. e. q2 l4 s' ]' Q1 w9 H9 f& a# g. h) Jlet local 0# W  S  a/ ~% k7 d- c" n1 B7 P& n
while [k <[trade-record-one-len] of myself]
, D* e( O8 F% [; R[4 {6 A1 W- v! W  M+ r. B
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)
: P2 \/ m' q1 l  Zset k (k + 1)
; }$ h9 i. ~3 @2 a]* K. `* [. z# |/ j! h
set [local-reputation] of myself (local)7 l& n, p- K8 v" i1 W
end
4 H: i8 t- y& h- `. h: n1 w; H" S6 A' }
to update-neighbor-total
8 v( ?" ^$ p4 ]5 v
* L: r  k8 ~$ |; Vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! ]5 j, S5 S& H  Q8 t+ ^. F+ m1 X

( ^/ {8 x, p: Q3 \/ v9 Y

/ r! [# [+ q7 ?end0 ?  o) o' F5 K" r6 {6 \
% \" Q" `! }: C4 i% k7 i) }/ W
to update-credibility-ijl
. G$ l- H* C" p3 ?9 b3 c, |0 I$ W/ Z: {+ K! r$ ]9 m: W) I4 B% v  W( m
;;
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 N7 e+ V1 n/ d5 Ilet l 0
& D/ I: ?$ ~% y/ O5 g, S7 Ewhile[ l < people ]
2 b* D3 m3 |" I$ q& 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
$ Q( t) B. H4 t" N. \3 ]- T, m$ a[, Y& w1 N" |, Z% M
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, R5 G2 P+ p' R3 W2 v# }# aif (trade-record-one-j-l-len > 3)& H2 I; H, d) r8 ?
[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) p/ T$ \. ^. k  F- D2 E
let i 3
9 f2 J. B5 I/ @; h8 [4 o! `- Klet sum-time 0
4 Q# a* Z( L! O' ^$ Qwhile[i < trade-record-one-len]
5 M$ M% E/ t( \: l6 p# x! I) K[
9 ^4 S: P5 f) I% Y. P5 Y- `7 wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) ]( _% K5 [$ Z0 s" `& n- {' B2 Vset i
( ~1 t2 |1 E. I6 d  ^. O( i + 1)
$ P* c4 \, H2 }( H5 U. A+ H
]
0 H% a7 i  E% ^$ {% j# {7 Hlet credibility-i-j-l 0
- A9 s- U1 ?4 \, R2 m8 @8 t/ i;;i
评价(jjl的评价)
! o8 [) R- D6 ]* X. H. l. F, Elet j 3$ Z! H, `+ C* I  q; y0 [1 [
let k 4+ |. M$ c" j$ Z
while[j < trade-record-one-len]$ t* O% `: d& s# S5 B6 J% ]' r
[
+ L9 w) ]; S) f  q8 ]0 ]5 fwhile [((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
& J; C1 Q( [7 |* p/ |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)4 }: w/ w2 }$ K4 [0 z
set j
0 l* |& S1 }9 S  ?( j + 1)

5 Q. X! a, M& Z5 B]
% Q2 d; `: `' |  Eset [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 ))/ N- E' c) b9 `6 W2 B; w% d
  h, [* T! M8 f5 ?3 v
5 h0 ^+ P8 x7 t! ]3 N
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
' m/ s3 {& Q2 e' v;;
及时更新il的评价质量的评价
/ N: y0 E( s: g  P  dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ], M+ [0 i, Z% h( x9 G0 k
set l (l + 1)
2 M+ b2 z* O  g9 E]
4 z, t) d* \7 a" Rend# N1 q9 p, i* g
& q! O; M5 N$ ^. i! U
to update-credibility-list/ ~/ U! j9 x* `( ^( M: G
let i 0% X  Z# h! K, P; {/ j
while[i < people]% z7 J* |' P* W
[
" T1 }* r+ `" W+ w5 E; ^, g; Klet j 0* H0 P8 a; x1 e+ c
let note 0
) m6 T/ ^" e2 H# plet k 03 {* ?3 B. u; {! M! I4 {3 M& V( x
;;
计作出过评价的邻居节点的数目" Y9 M- X- h# ^( z9 [, t
while[j < people]- v9 u8 e$ L7 t% b
[3 Q" U9 T1 u4 h& e; @# f
if (item j( [credibility] of turtle (i + 1)) != -1)$ I  O' Z: ~6 O3 C* h3 l
;;
判断是否给本turtle的评价质量做出过评价的节点
( k5 c7 A8 f8 \, Y* k2 d; u[set note (note + item j ([credibility]of turtle (i + 1)))9 `( s6 A6 }4 B
;;*(exp (-(people - 2)))/(people - 2))]

" t1 _8 T$ x8 k9 C1 hset k (k + 1)
4 U; p7 e. Y: |+ G7 f6 }- P7 P]
; E- `: d% @1 Y, [: fset j (j + 1)
. }# h4 x) U; q) o7 c. L. s]* `* c+ R% |! B% Y' N& _. ]6 I
set note (note *(exp (- (1 / k)))/ k)# x1 o6 D; d0 F* F
set credibility-list (replace-item i credibility-list note)* Z. {. H% u1 A. q, ^, i+ W5 c
set i (i + 1)
0 o) D$ s: g! b; }, B. z: A1 q5 z]
# T& e. C- Z8 T( R" ~end
' ]  c# H3 F3 R/ R9 O0 Y6 s$ _* i# v9 ~. o5 [* ]( H! Q3 u& s
to update-global-reputation-list
1 I' U: ]# t* T& D, Z- X3 f- `let j 0
2 H& H0 x% Y8 v" b7 s3 N1 \8 t$ z+ uwhile[j < people]
" C4 ]5 q/ y5 G% J' `, e[  I7 ?: J9 S! i; [$ f
let new 0  z2 E5 q- u2 z* g# ?
;;
暂存新的一个全局声誉4 j% f' Y7 ?- o; N1 A+ w' z8 ^
let i 0
& S  ]$ y) \! u2 Y0 s* ]let sum-money 0# u. L( o' K! b; z' w" t7 _
let credibility-money 0
: R# v) u/ P% |4 {' [while [i < people]
# }, w$ u! s$ s/ Q[
# X7 g2 b+ R  N0 }9 J; t/ W" M3 C4 iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% ?8 O/ R- C2 F' j& W- e: r
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 Z  _9 K" I8 r" ]7 wset i (i + 1)
' w( {+ S6 b; Q: z. i% ?; `]
1 L  ^1 P% R- @! c+ Blet k 0; g5 c1 x* Z& \# ?0 @% v& E
let new1 0
: Q; k9 h! |9 M% X  ^4 iwhile [k < people]
* ^: Y) w, @7 b[
+ ?  I  I0 F, I* D6 k, Zset 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)& k+ }! \; w6 ^9 I, c2 S
set k (k + 1): ^7 W6 q  R( l* S. k2 m
]
+ E2 k( i$ x: n$ O5 `+ ]set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ j. O" E6 f$ H
set global-reputation-list (replace-item j global-reputation-list new): Q( c/ q6 c3 `1 L/ T2 O
set j (j + 1)
6 L: [8 k& |$ L' C& c$ i5 J]
) V" u; h8 N& g" _9 S- hend$ W$ T* `8 S) ^8 Y8 f% M

$ K* k: O: E0 c& m. J
1 x0 P6 M  k8 u+ _, ]% d9 _5 O
, Q( P4 ~& I$ [1 G1 P0 Fto get-color; ]) B. l& t- l. y  I) H

1 W* C! d) s' D9 z9 Vset color blue

9 n8 j' }5 R; ?+ g. w& i/ ?  T) Eend
6 O' {8 f0 }6 v7 i! D8 u, f9 G' q3 B- {) _2 ?3 n2 g1 n& Q
to poll-class: ^1 L' P  r4 j; `9 d+ k; n
end
; ~1 G% K% A  m  U0 J. z( J; z; F; g
to setup-plot1
0 S+ ~6 e* y5 r! O0 m" l
5 w7 }9 p. T5 P: {& z3 @5 ~9 \set-current-plot "Trends-of-Local-reputation"
" s+ k2 B. d" C& d3 |2 M7 h

. z" p+ {( Q) F8 I! s% pset-plot-x-range 0 xmax

9 ^1 Z; q7 E  S% [5 ~7 p/ F; z: j( S5 P
set-plot-y-range 0.0 ymax

1 u# A3 S# ~* H2 cend7 H5 L; k8 N: i4 O: o) d
& ~0 j5 R( @3 v8 L- z
to setup-plot27 s) ~' o. b2 `8 J. u
0 J2 R# Q# w" B# O- {
set-current-plot "Trends-of-global-reputation"
: ~4 S9 ^' n4 n+ T% q

' B, F) M6 n% vset-plot-x-range 0 xmax

1 \  l( a- y; X) W9 e% F. o. n/ g! Q( a$ c' T7 Q! |7 F( g
set-plot-y-range 0.0 ymax

( m/ R/ v0 K* R+ p( nend
* I' C% Y0 A  A/ k1 \
* n" t( ^$ x% H' xto setup-plot3
; M: R/ D' c& p
# _4 h7 T) X. rset-current-plot "Trends-of-credibility"

* m! ^" s- ]/ Z$ `! ^" G2 `' }; h7 y# ~# k
set-plot-x-range 0 xmax

. s+ T; X! F; S& ]/ D
: f; U; n5 G, ?/ `% {set-plot-y-range 0.0 ymax

$ F% V- h) L' S0 W: W2 Rend
$ F0 f. n9 ?# G0 \. y- z  N. n2 o( {4 U4 y- c
to do-plots
% g4 o! [  E$ q% A+ S0 O: D: hset-current-plot "Trends-of-Local-reputation"" ^, J+ ^* T$ [
set-current-plot-pen "Honest service"
( N! p: A- r/ ?" Send$ u- z! z# E: e2 \9 ~6 K

! m3 U& @, j% q6 U% @% N+ C[ 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.9 A( U5 N; v6 |# X
* x- V- q( E5 P
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, 2026-9-11 23:33 , Processed in 0.020255 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