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: 12783|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:
( [2 V7 ~) X* D8 Vto do-business
+ S4 a, [( v: C5 Q* t rt random 360) j) l! I; B' q. u9 r: g
fd 1* Y8 F6 P2 u, r' e
ifelse(other turtles-here != nobody)[3 g* c! R$ K7 m0 W9 G) @
   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 O; e1 {( `0 X, |  [2 W$ S# Q9 [   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 S$ v) Z, U6 ?' c5 H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 P% X3 B3 j& T; k( b  d! \
   set [trade-record-one-len] of self length [trade-record-one] of self
' |# T) n: m2 P   set trade-record-current( list (timer) (random money-upper-limit))( C) G& T2 j7 ^

9 L, Q) h2 m( O7 j+ Q2 g+ r0 y问题的提示如下:
5 u  i" `- k2 b  J; t- }+ N9 U  o$ G" L
error while turtle 50 running OF in procedure DO-BUSINESS, }& [  ?0 h# u  \/ R% P
  called by procedure GO  M- i# ~" {; v/ Z5 E2 J& {' O2 v
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 C, U0 U1 E( S/ |  q& H
(halted running of go)' M# A4 ?2 E' m' c3 o. x& O3 Q% ^0 r

, S/ u- g; z6 n) k6 x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~~
, X6 |+ B" P- Q+ {, o+ 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/ O# `# g5 D: v0 P6 a
globals[
- M. k- m2 Z9 O9 Jxmax* z& K* [1 l  ~) M- b- }
ymax
" z) C7 B# W& H) g/ _1 b2 U2 Aglobal-reputation-list" ~# a! W6 _+ h: j% O5 h/ h
/ l( Z* M6 i& M4 j9 A
;;
每一个turtle的全局声誉都存在此LIST7 Q. h; ]6 M7 I6 z; a4 m
credibility-list
/ V7 |9 b' f, \6 U- ];;
每一个turtle的评价可信度
/ R9 C1 Y6 a: ]+ M& w( T* zhonest-service
# H4 s. ?9 K8 S2 R4 q* a9 ~unhonest-service0 |1 a5 M% J# `7 C% W
oscillation5 G/ j$ f& E0 s+ P, Y" E
rand-dynamic( L& w2 ~$ t, q) ~6 S  L, Q7 d1 c
]
  d2 M% r6 M' }; r% z5 ~' i& T+ f: {: w7 p8 Y' [
turtles-own[1 L; j  C9 D4 N7 T& x
trade-record-all& Y! v& x" ^; i) s3 m: o+ T4 d$ t. f  H
;;a list of lists,
trade-record-one组成
3 i9 e( L+ ?" x! g7 Ctrade-record-one0 V1 E3 ~, O5 Y& Q) ?
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 R" z& d3 @, ^+ V& T$ D6 t% `6 |
;;[
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]]
" N0 q/ C: `6 r$ M9 E1 Z" Dtrade-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]
- T3 \" }4 n( M2 j5 |  ocredibility-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) B' Q, B0 x2 N$ G: M
neighbor-total! P4 }" r# q) N# J+ a5 Q; C( e% @
;;
记录该turtle的邻居节点的数目
. e, B( [4 H1 mtrade-time
2 @$ a7 k+ S) `;;
当前发生交易的turtle的交易时间: a( M: @9 m' n/ L9 [
appraise-give2 Y4 a3 q5 p% g2 h% ]4 X
;;
当前发生交易时给出的评价
/ E# [2 x/ R: e' h9 Cappraise-receive& G, f3 f/ _1 w
;;
当前发生交易时收到的评价9 ^' @* |% z% I, T+ [7 q5 b' q* |
appraise-time
0 s% [+ M  @  c" e! p;;
当前发生交易时的评价时间& ]  ]5 g" Y; X2 d3 R- `* a
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- n9 u, Z( M9 f/ n, C" O% ctrade-times-total
) N7 f; k8 x, g8 b;;
与当前turtle的交易总次数0 Q% @( B4 {# p6 m( V
trade-money-total$ P' Z2 w: I) W6 d
;;
与当前turtle的交易总金额3 g% r# Q/ Z& \4 C3 N
local-reputation# i1 s. K( f+ u2 X( _
global-reputation5 U- L! h; M4 p3 D# T& B* \
credibility2 b8 n2 E; m' ~* t2 ?& V
;;
评价可信度,每次交易后都需要更新
- V6 g' b8 U7 dcredibility-all) D" H2 B* f: T. @  }: N( H  P3 d
;;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  R6 K1 i8 U' }9 y( o! z6 ^

+ I9 `% B6 n* P8 @) I& J;;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0.54 y2 S- \, }1 x9 d; O* R' n
credibility-one
9 R; v3 g- i( d- M+ S;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
4 D' C; f$ n; {global-proportion
' B6 L3 Q! I6 r% X% Q1 |customer$ ]/ ]$ g: a$ K) h
customer-no
8 z% {- v' M7 P: x* l  p3 V( gtrust-ok
* t6 [. m  v1 p" q; j2 ]* j& N& Htrade-record-one-len;;trade-record-one的长度
; l* y. a( R1 X: P4 C5 I; Y! O! }9 ^]9 M- s  A( U4 z, K$ ~& S
: E1 L5 j' q4 {5 k- B, ?( S
;;setup procedure
3 X* l' O3 t: l+ m; j7 C
9 \' d7 y3 m' O0 @7 f' Yto setup
* c% k: }% p. p- T1 N7 \/ Q# H
0 P; n) q( k& r( y% Cca

  W- w9 @- Q! ^) _& {" z$ _. c! k* g2 H* z* Z- R7 ^
initialize-settings

' ^' A9 K0 Z3 Q" z8 N7 l8 N  b
crt people [setup-turtles]
$ K3 M6 b; I* x4 h/ D
' a* N0 Z: P3 Z" l
reset-timer
6 P4 ~! B1 L/ Z$ o* d

- Q! g8 ?: y7 R8 C9 P# @& ?poll-class
6 l2 N- r1 O% G! v# @3 ~9 a
0 G. H3 ?3 m- h% U7 _0 O- C3 O
setup-plots

& t* a: Z" f0 r$ _0 g" g
$ }* v" L6 s4 ^! P5 ]' J* ]do-plots
9 p) R9 q' S0 ~
end
0 `5 g8 R6 g/ E7 i4 n
- }+ X( q/ u9 \; m; S  nto initialize-settings9 @, I, |  A  H
, V. U- v6 l" F& R7 C7 m
set global-reputation-list []
" s" z, k" q4 n6 h

5 S6 z" t" w$ V7 U" _set credibility-list n-values people [0.5]
4 C7 c  q5 a1 T$ l
4 X9 Z% p0 h, p1 D8 J
set honest-service 0

5 d; l* T& f0 M. U; n
& k4 G$ O: \: fset unhonest-service 0
$ V, q4 F' I+ `% z, {7 u
7 v5 N( G2 x. N! d
set oscillation 0
9 t9 x3 o: Z& |4 ^- C
* Z, @$ F: b* }+ T
set rand-dynamic 0

/ U& T/ `  X! }7 S6 ^5 x; send
5 Q0 z8 {, {: c9 o! Q: R1 F' s. u9 G% a
to setup-turtles ' m0 R3 S1 c9 ]% N6 H' d
set shape "person"
. k0 i+ X- d! H, R% ssetxy random-xcor random-ycor
5 k0 \; H1 U: g. [9 Iset trade-record-one []: [3 }$ E& t3 r% f- g& ?

2 o6 t" E: v; l" n1 Iset trade-record-all n-values people [(list (? + 1) 0 0)] " P) x" b' q5 w1 B8 s/ B

: o7 e% ]2 b1 U6 A& H7 y# S+ Qset trade-record-current []: Q0 W0 \1 p$ P" M7 I3 B( g+ T2 P
set credibility-receive []
- Q- L) g2 ]4 aset local-reputation 0.5( ~8 n! g; @2 y( t0 {5 Y3 v: t
set neighbor-total 0
& S6 ~/ t0 U! P- {; h# Pset trade-times-total 0# ~* }) @7 E4 N( m1 a( @
set trade-money-total 0
. a! f9 K. a* X. {: M5 d( u0 mset customer nobody! Q* a; y+ ?  z8 \5 o7 T+ Y
set credibility-all n-values people [creat-credibility]
4 ^( b' O' C2 T, Sset credibility n-values people [-1]
; a' y4 z: o( a* `+ Aget-color. y# m5 `# M6 C
9 z8 V' d) |2 i6 e
end
" p4 Q+ k9 W3 @3 @$ k1 z- \  \  q9 {
- B  h- O$ a  O2 Dto-report creat-credibility
9 W& w9 |0 p2 }) o% ]report n-values people [0.5]
! d+ f2 |3 w& y' u4 z$ X( Q, S: vend- T7 |# ^( T! I

' G: U: d  _. b, B* f/ u) kto setup-plots, Y) M) ?0 M) \0 a  [6 U  |1 Z1 C
2 ~# D  G8 k9 t  X6 Y7 z/ G4 @5 Z
set xmax 30

; H* I! Q) G; ~2 b
2 |8 E3 Z3 T: q" V9 t& Z7 ~/ Xset ymax 1.0

0 {3 v6 B# V1 c4 V3 i# U) ~+ N' o. A/ i- f& |; p: A1 g3 F% ^' K
clear-all-plots

) I3 q, J# m' f7 [
" H8 |8 y! s0 K1 V$ tsetup-plot1

, _, j( Q9 ]. b# X0 f
3 h# Z: x' o3 T9 |5 N3 vsetup-plot2

  G+ v7 l% p1 w4 |/ |4 I( Q# I: a, B. Q  l/ r0 I( y
setup-plot3

+ d; m1 y+ K6 |  l/ ]1 A5 send
, I# y& l( Z, k9 e$ }& J. [$ m
& _" Y2 n$ y/ @/ I' w;;run time procedures
' \0 A9 Z; m4 [/ E' f5 s+ v% n
' z. {) G" F3 o+ X8 h# b8 Xto go$ E6 [& n" W5 e$ h8 W

  P+ T. W2 W  C/ Sask turtles [do-business]

0 q6 ^6 j& ]' u* ~6 ]" hend
$ |! r7 }( \. R* @9 @
* k/ s# W/ M4 D3 b8 i/ q  oto do-business 8 C' ^: p8 M( q9 U
) }1 w' q: w) f1 P, O8 u2 M
1 X3 }8 B' v# J! Z
rt random 360
- Y. |) r* ]8 v5 q; F0 J; l
$ b  {9 P& G, F6 @: U
fd 1
8 ]& u3 L# U9 H! p* q
) D3 R  N/ N5 @2 ?! I
ifelse(other turtles-here != nobody)[

9 ]1 O, N/ `; v; n- ~& a$ I( {- Y2 I! O  A+ K" c, d
set customer one-of other turtles-here
% n5 R% Q  l* T; I7 v& V
2 ]6 K" d( T3 y0 G
;; set [customer] of customer myself

* e+ y# R# n/ S. g) E8 Y( v+ K
set [trade-record-one] of self item (([who] of customer) - 1)4 `4 Q) R+ \) H+ O) ^: E) E
[trade-record-all]of self! g7 L3 H! C) I/ S
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, U" u$ R# \$ W' S) b
. ^! ]2 Q8 B2 ^2 f/ Sset [trade-record-one] of customer item (([who] of self) - 1)
) R( J% B  V1 t7 n[trade-record-all]of customer
8 `* ^% l6 d) c1 S) D8 A

2 D) c2 h+ U- ]% W* W) Xset [trade-record-one-len] of self length [trade-record-one] of self

( S$ l" q# |, z% C$ u' K9 F* `/ t, c- O+ Y3 m0 u; n4 r# s3 U1 X
set trade-record-current( list (timer) (random money-upper-limit))

- ~) N: }3 m- T5 B$ I4 y1 ~
/ j' K' }! ?1 d7 e: B$ J; cask self [do-trust]
! a! W. E: k  \: z( a;;
先求ij的信任度; X; k; ~& h6 M& y5 }3 j+ h
6 n! F: s( A0 H. Y: [# B
if ([trust-ok] of self)$ P& B0 G5 C$ `/ u8 g( ^  g8 [( j
;;
根据ij的信任度来决定是否与j进行交易[6 \+ \- |0 Q% S1 X( a! X/ m
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- U  q) _1 R+ I, S8 v* {! B, t7 r! [$ i$ R9 W6 ~$ x# X% u
[

! E: Q& A( c- G8 k1 Y' v; U0 _5 ^5 _7 s* g  u
do-trade

, c# J8 F5 U3 t; g7 W6 K  E! k% K
7 k2 T1 e: }6 ~- Mupdate-credibility-ijl

& `# u4 x% a; a1 Z/ x+ P6 p: S+ n4 Y
update-credibility-list
9 B5 M2 O" \+ j# Q( x' x

% L4 V1 @2 r8 }& U" v3 A
! u+ K2 i8 D7 ~% |  b) A# J1 vupdate-global-reputation-list
/ ~6 t6 x2 S( l' F3 U

: B# o8 r! `3 G  N3 g( f) o! Spoll-class
; k1 B9 y/ i$ F% }5 t8 q. E

. [+ j! R$ J4 C" x0 C( xget-color
$ t! e( v% R7 K
5 T7 V8 m/ }- d5 d) [
]]" Y: t5 V1 @1 z4 [6 |& h+ h& |; J

9 h* a* Y/ r. n. V& ]# L# G0 o;;
如果所得的信任度满足条件,则进行交易
( A$ X% p( q, f  Y9 r* i3 l! w
0 ]6 f7 {0 a9 q[
8 ?5 _+ g/ O0 j  M3 @

/ f- {  B& w& D. o) Frt random 360
7 q. B" G5 z3 Q  j4 H' o- u+ G, h& g( @

( K" l; J/ L+ {3 ~fd 1
  o8 t, @  s3 j. b0 ^6 P. X1 b' F

# k1 U" k6 i  b9 R, d& }& x5 J  W- |]
, z+ ?3 ]( m7 b+ S5 ~: F
, ?- M9 D0 T( T) ~8 B7 k: G+ n
end

& C5 R6 ?* F/ N4 ]( c/ H: k8 x# l
to do-trust & ]0 p% A3 C( {) y. @  K8 q
set trust-ok False
7 E, d5 e8 C# F5 ]# X1 A( n# r( I+ U4 T% K  e, k% O  Y0 ~
0 j/ M, h3 G! F; G) L9 K
let max-trade-times 01 q( _7 o4 c0 _( g
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 f! Q( ~2 X- h& d& Zlet max-trade-money 0
; o( I+ b, I  X# o, F" Yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; T0 z7 i! h' Zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 W% Z9 s& \1 o# S$ l/ u: l
. n* N4 F5 Y' n& c# \8 J+ X5 w

0 a, ~2 v% M$ Z, ?8 A5 xget-global-proportion
# L& n; q: A2 w" }  }& P. \6 W, q" vlet trust-value( Q: X: Z) Q: W' z% G7 ^) s' ^
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)
7 |. c  J7 a8 K+ i$ D
if(trust-value > trade-trust-value)( q6 L5 S4 ?) \, y
[set trust-ok true]
1 f0 L- B7 V4 e' C+ k& f! U% zend& o) n0 p5 j7 Y5 M" |/ F" P
1 I6 z+ ~9 i& ^/ F' e
to get-global-proportion
" S+ Q/ T5 ]# ?. Wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 A& A) q  F3 @' \0 Q" p* g( ]. G
[set global-proportion 0]+ {, Z7 |. M3 n' O
[let i 0# A- R/ k& P' V& a' X7 w: n
let sum-money 0' @% N& e1 a, K; ]1 ~8 b
while[ i < people]
- K+ }' U+ G3 W. Z9 E[
& n% j* Q/ J9 u7 }if( length (item i5 v- n. S0 U6 b" i
[trade-record-all] of customer) > 3 )

& F# [+ M6 c* v  g[
# k# f! W. q! L# x- Bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' F4 Z: t! l7 w/ @1 k7 G- z  v, n]7 X/ C0 ^4 @7 k) y
]
# ?2 S+ l  ?/ l, Y+ Y& Xlet j 0
* [6 T+ I2 P, {* R7 ?let note 0
, w, V- y( z. ^% g  n1 P# y% twhile[ j < people]
. L7 M2 v6 s  O  \[, @" w& e5 T- Q, i
if( length (item i0 N  F( Q" N( T! a* `9 g& s
[trade-record-all] of customer) > 3 )

4 }. f8 q6 u$ i. J/ Q+ M; p# F  V[. V3 b9 J" {/ s& r
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 D; V  H, n) g) y# Y$ m* _[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, L' \- p" D+ j2 {$ R+ C4 o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& o1 s2 @2 D  c; A  U" E( _]
2 E. G4 p/ a' }( w]
) g8 Q* P7 c0 K9 g6 f& @set global-proportion note
" ?: C/ Q% P% ]% a. p; X' E1 M]/ ~! c4 R2 c. M: A/ D1 Y
end; ?; i0 ^( @* z
# {) Y* o: N0 l: n2 R% c. d; i6 H
to do-trade
* C+ L: e+ \' W( d( s1 J;;
这个过程实际上是给双方作出评价的过程
* [, \% Z$ y9 sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. Y) K* \0 `: z8 C- N8 O$ M. Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
! @4 t  X: V$ S# jset trade-record-current lput(timer) trade-record-current
2 A* s: r  v% B9 Y5 w. C& k;;
评价时间
$ S' i. d9 `! F3 o) i8 i) Sask myself [) W/ s$ W  a7 Q; C3 M
update-local-reputation1 H9 A% t/ Y2 B
set trade-record-current lput([local-reputation] of myself) trade-record-current3 D+ w4 n; [' ^, [8 @
]+ v1 R( _, q0 P( K% I
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 n8 m  v$ o# A4 L* d+ X;;
将此次交易的记录加入到trade-record-one
; c4 T$ A8 I5 w2 ~7 qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* N$ j: J, Q1 t7 ^1 B; k0 |/ M
let note (item 2 trade-record-current )
% k* g% p1 Y5 }set trade-record-current
# _* f5 P2 h  [" Q% L+ x+ P(replace-item 2 trade-record-current (item 3 trade-record-current))

- X/ O; }& N: L4 lset trade-record-current' F/ L! W) L: v4 e8 t
(replace-item 3 trade-record-current note)
) G3 Z. S* @  V% o6 c
% G4 M$ p' K2 O4 D/ j4 d8 k; Y
, r% c" H% A. H+ J: {3 h( j; X% z3 J( U/ I
ask customer [
/ c' I* B' G# c! k" `1 l( d5 t/ cupdate-local-reputation
& q. C. r. Y  Q" E/ D- H4 o& K6 Y: Nset trade-record-current; }5 I) m; v- r$ n9 V8 A) a
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: z1 y; O; l( j$ B/ y; L# p8 f
]9 b6 P$ C1 M. {" m' _

1 k9 A, \- Z9 s9 l+ F3 B$ k% o

1 F& x* Q0 l+ r' _* v+ Y1 Y8 Qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: c; X  n2 V! O$ ~4 x

2 H3 d# E% c4 S1 s9 u, n, S2 dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- V9 Y- r3 U% V, v1 T* L( r;;
将此次交易的记录加入到customertrade-record-all0 E0 \$ k$ m9 `; r  F
end8 }5 I; \+ z3 w3 u# x, K

5 ~9 a1 o0 o; r. y, T5 x- hto update-local-reputation7 z0 d+ E# X5 L/ C
set [trade-record-one-len] of myself length [trade-record-one] of myself+ ]' A7 A6 P: v0 H, c
" U- Z8 W( |5 ?- I5 M( Z+ k' z
' P- ~! G* g6 X. f- n% i
;;if [trade-record-one-len] of myself > 3
! y9 f6 F8 H  f; \+ H' H) O
update-neighbor-total% w& ^2 P& o4 Y+ b
;;
更新邻居节点的数目,在此进行
+ t/ G. H  y/ Y! M6 U+ g3 e: ]let i 3+ z0 s. v6 i! t2 e
let sum-time 0  p! `3 b3 H. i: ]! a* k
while[i < [trade-record-one-len] of myself]
: U, F: ?% B4 w" A[
* ^) L& \0 Z+ Lset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( ~5 m8 P/ k8 ?+ e/ B4 i8 _
set i
. {. H5 R: O) r6 }! M7 W, V, G( i + 1)
+ x6 {7 X5 P% t  t# ]2 f; i
]5 |! p! t- {" ?6 i
let j 3, j- q) _$ d. E7 S( B: O9 ?
let sum-money 0
: \$ x, j4 l6 c% d/ zwhile[j < [trade-record-one-len] of myself]3 w4 @' ~) C' O
[
7 n2 L3 C( W/ Tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)4 C# x: b' ], |7 Z/ u  p! l5 g) x
set j  [1 E5 n' G3 l' |0 r
( j + 1)

- }9 ~1 G6 u# []" `; q6 s/ q- K$ Q6 t
let k 3/ p' C) |. s7 ]+ k) l+ y* T
let power 0! r( y6 `3 d: A
let local 0* X1 S7 ~; Y# H. [  p* Y) T
while [k <[trade-record-one-len] of myself]; N  X- S; l0 L; {+ `4 K
[8 b% j, Y  O) I" @
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)
) H$ a) S. o+ p1 R' H' Lset k (k + 1)
4 p, ~8 H2 w8 ^8 D. Y# v]
  Z& \* n/ C  _7 C$ yset [local-reputation] of myself (local)
. |6 p$ c1 O" S! yend$ v$ q* A/ d+ k* `
4 R) T; R9 U" P% I
to update-neighbor-total
: B7 |6 ^4 C+ h: h$ w. G1 f+ r
- t3 C% X4 p8 @  d- D0 [2 ^if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 i9 e; j# w, }) q# Y$ _
8 f7 d/ O0 \5 S0 Y( Z- n% w
0 c5 G2 k# H1 n* k
end) g3 u+ [9 b; A
" Y2 V+ d6 L8 j9 ^0 d- }! I
to update-credibility-ijl
; g/ O! T; m* F  r) h5 x  M  A6 B* ^7 n
;;
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。( g5 f" W) A. \  V3 v
let l 0
! v# K* o% Z, H% Ywhile[ l < people ]
" l( H6 M" S" A) X: F! c7 i& |;;
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: D4 V- M4 ]! P
[
; A+ i0 W) H; [: g& v4 }1 G( E2 \let trade-record-one-j-l-len length item l ([trade-record-all] of customer), ?4 b4 R% z9 |- t, Z# z8 e, x
if (trade-record-one-j-l-len > 3)! H& L! P7 d) d$ e* I# I
[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+ b2 N3 \$ |3 R2 |0 E! @2 x
let i 3+ e- T5 p. ^$ F
let sum-time 0
5 v- L1 j2 a3 O  C7 e$ rwhile[i < trade-record-one-len]% w$ O, ~" P- r' c1 o
[
5 N" D& q1 V. dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* }1 r5 Q5 y; _- j! Q9 `# L
set i4 q7 d7 K7 V) O7 j& P- z5 H0 e  I* r
( i + 1)
" `$ K- s  l* A2 f1 f: e: L
]
! o& k( ]( P2 |let credibility-i-j-l 07 l+ V' |1 q! V5 v9 U- X. K
;;i
评价(jjl的评价), v" r$ H% @- J- V+ Q
let j 3
, X' g$ x! i% e' Flet k 4
$ H+ k: k1 h7 P9 _& Q" f, owhile[j < trade-record-one-len]
# \$ f  K; `7 h; Z% d[
! }  d4 s! G" Q% V" Z0 rwhile [((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
# ^6 i1 C) v# p+ Q+ t. b7 l, bset 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 G$ d0 ~- e% r  h4 S3 }
set j  Y/ c2 s, H$ M) i( _' [
( j + 1)

" F1 Y: |( g- N) u]
1 D' y. b& C; i6 a! f- wset [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 ))
3 u3 T4 d% M( Q: {' a: \6 n
) R$ ^* S$ g) h! T% E  {" ^

* q4 s- ^! n% d0 `8 Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 }+ B# g, S# C
;;
及时更新il的评价质量的评价/ t4 G6 z5 t  V. Q: d
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 F5 C; ?& a# ~4 ^3 r
set l (l + 1)8 o5 b3 z3 ?( W# h6 g
]- G$ a: o% z$ q# L  @
end
. K0 J2 T1 W0 f* m/ K# `; w0 U
to update-credibility-list/ A2 B$ u+ W8 K; R5 y6 F: {
let i 0
7 A0 B# r# m$ }- H  l6 }while[i < people]; ?1 E* p  S; i. s, t& V
[
4 t4 }$ B* B" l3 S$ qlet j 0
; N5 x9 ]( W& I3 K: k9 ~& Hlet note 0
" _) S2 S* p) E6 w8 w; k2 [) ]let k 0( g( s6 P! U; a$ Y
;;
计作出过评价的邻居节点的数目
; r$ [* r% k1 r$ pwhile[j < people]7 N* M/ g/ p9 T! Z
[
0 V% V) h. c8 c' H) [. f8 Oif (item j( [credibility] of turtle (i + 1)) != -1)9 E! y+ m2 b3 g9 E7 d1 S
;;
判断是否给本turtle的评价质量做出过评价的节点
9 q- S- x, z" G/ S  n[set note (note + item j ([credibility]of turtle (i + 1)))
0 \+ A5 E7 [3 d5 C;;*(exp (-(people - 2)))/(people - 2))]

4 U$ y# x/ X  O; E. uset k (k + 1)
1 P: J2 F+ V5 |. o9 ?6 _]
& D/ S( V" Z4 k" B+ X( Nset j (j + 1)
8 q& i3 x' d; i, w]
$ l5 D# u2 J  r1 i0 z  q5 k5 Pset note (note *(exp (- (1 / k)))/ k)
' X9 H/ E2 m" A0 E- O4 Gset credibility-list (replace-item i credibility-list note)
) @& }4 [# o, q; Y- V4 R, ]& i: N3 {set i (i + 1); e/ H9 E% \+ a6 B
]0 g7 \7 d7 S# V% v& V
end
! \0 T7 e, R+ N6 R/ R5 L$ V- @/ n8 H- g$ X2 b: Q, ?4 ]. J
to update-global-reputation-list2 r, a) X' l3 U4 h
let j 0
" O4 [& U( h2 J, h" |' Swhile[j < people]6 o& z. d# q: @8 V
[
- r; t" Z8 j$ b% Q" Elet new 0
) ~: l, }( }5 i; f;;
暂存新的一个全局声誉3 b& A  r# _9 m7 x' H6 M: T( s
let i 0
# J/ i; F- t# |2 Q- B( h0 [- j: G1 `3 hlet sum-money 0
) K# N3 o1 Z) Q" l0 t4 E. H. zlet credibility-money 0" t( b/ D3 ?+ O) q0 W8 ~5 J+ W
while [i < people], p( ?* d: S, {4 u9 g) {
[
! `) k# B2 ~# T8 V/ yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 T) U) \2 N; i9 b  i. Q1 {( W
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 x& H; V) N" I9 Oset i (i + 1)
$ d4 H+ Q4 [4 ~' y3 }]/ V; ~  c) H6 W4 l8 e
let k 0
* d: F+ I* A  M" k. e) mlet new1 04 n& O8 |/ ?. q& r/ ~( p
while [k < people]) \$ a$ U4 t% ~& q
[8 s2 o% f; I, W$ e( C5 y
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)% [# r2 |* a. h, H- A3 S( W
set k (k + 1)
4 z" M& R3 {# |" n, @. []+ y  R5 I- Z* g$ i- k0 p
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, N: P8 Q/ `* S0 oset global-reputation-list (replace-item j global-reputation-list new)
( O* L* S  V3 U; P# wset j (j + 1)
' H( y3 q" G& K8 g# R]/ U  m& V* ?7 O+ t3 V
end- }0 |: x5 r- q; p  c  \

5 o3 L2 N1 Y2 V2 }0 L) ?) j! T, f2 o  L
! W, S$ ?/ R  p& a1 }* ]
to get-color
) P' {! q- m  D* O8 {  B+ Q
: e3 Y8 F5 c& O( ~: E  Zset color blue
0 h) e8 q; u. m7 h$ |
end
+ ^0 v4 O3 ]1 ?$ C; d& H$ E, I$ F# V! d
to poll-class  T$ T' U6 W5 b/ R/ {! }1 z) s
end% [7 O* ~" s7 P  g

4 g: |0 S) |; ]0 m: J1 d* Oto setup-plot1
' T# ^0 @- w1 y) C
. d$ o* D" v: G% D+ ~set-current-plot "Trends-of-Local-reputation"
; v. P7 @. o$ J6 H0 ?
. `6 L% x; s0 H+ y
set-plot-x-range 0 xmax
7 U; @; N, O) j) `, x' X! F

  C/ [$ c. t0 ~" Dset-plot-y-range 0.0 ymax

* [' T. j$ F( n' X' w3 a1 Hend
8 |9 K% s' t" _' ]( ]) H. \& B% |' l3 N  {
to setup-plot2
. h$ e) M2 H) @8 \. W8 m) f3 E; E; l1 {
set-current-plot "Trends-of-global-reputation"
# Y7 }: w& o' d9 `+ W7 m* Y

: \; Y8 K  \5 L: Dset-plot-x-range 0 xmax

6 y6 Q4 g  M' w; V. g7 I
/ ~- K0 Y' P* g- Hset-plot-y-range 0.0 ymax
; f: V+ x' p4 N
end
5 o' U8 t0 k) P6 @4 x4 p
2 s) U) [! i! Q( W( N( D: y* hto setup-plot33 y- j% u; Y8 \
- {6 Y4 ^$ d7 v# g
set-current-plot "Trends-of-credibility"
- }- S- \7 A! l8 ~% q

( F! a, D7 Y( l* v  nset-plot-x-range 0 xmax
& k8 c6 a# p6 [1 [  u5 k4 t

$ {& b. P) H0 t4 H0 }set-plot-y-range 0.0 ymax
; a, ~! s9 z; l0 D9 y/ T
end
  @9 Y: |) a8 w9 e$ F
) E( n! w: x, _to do-plots
) J3 u! B- @# L* Z% @+ v0 Pset-current-plot "Trends-of-Local-reputation"
+ H. d: i' X, qset-current-plot-pen "Honest service"
4 Q% f7 O0 M0 \end
7 D/ H2 G' E4 q+ \3 C, j$ O
5 q$ I  q4 h0 F[ 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.
. s# L0 Q# N9 |" E( k
* e2 K6 `" y& c+ M6 Y' }5 g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, 2026-3-10 11:55 , Processed in 0.019620 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