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: 12594|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:: f, P+ c7 X; t7 A% q: P% G
to do-business
* z* v) ~5 X) o' @  \ rt random 360
7 m. t5 ~% g+ W: K4 M* n: p) S fd 1
+ G5 W) S& E9 B/ d: a5 J ifelse(other turtles-here != nobody)[
1 ~1 q- Z; V4 E( t- a3 c* u   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.
& R. u- W9 t; v, Q( Z( c8 G   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* k1 f4 i- ]7 W7 ]* ^9 f0 P) r1 \   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 i: s  E. V. |0 e: z- q' x   set [trade-record-one-len] of self length [trade-record-one] of self, b- k, g: ^, @1 n# q
   set trade-record-current( list (timer) (random money-upper-limit))  W( \& |3 O) o7 v2 q

5 ?( H. y$ `5 R: `9 A: S问题的提示如下:
. ^$ K$ B' n, t5 V5 F% z0 s. H2 P5 v0 F0 H7 Z
error while turtle 50 running OF in procedure DO-BUSINESS
1 I" \4 L9 E( @: c) c2 g  called by procedure GO' X3 {1 ~' C/ {
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
- B. c( ^/ F( H; f. _2 r2 \2 }
(halted running of go)( Q- I; q6 P$ f$ X
7 i2 w! _( ^6 ^1 g3 i& R
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~~& W4 Y. n9 u( ~% V, i
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, p% @  C$ _# c% s9 F
globals[
/ P0 B* T! o& C5 y7 vxmax
: B( S) Q; {3 H" i5 d6 lymax) p" q8 C3 C) q5 i6 U
global-reputation-list; C$ E  q& K4 b" M# `

- \& W6 m. ^1 p4 e; l4 u( I" n;;
每一个turtle的全局声誉都存在此LIST
% _7 C4 H% K  R6 M: e# R/ \credibility-list
6 x6 ^' H4 |, P;;
每一个turtle的评价可信度8 c! @$ H! q# E2 k3 m- N$ \+ a
honest-service( }7 x6 V# R3 Y1 S. F) {
unhonest-service
2 E& \. J% e( ^, D+ n' doscillation
6 H+ i! }5 h9 H- K/ ]2 trand-dynamic
9 I6 q/ E+ C; ~2 R- w- j3 f) q]# W& y& O9 C' ]/ [' h- }
7 W( ^- B/ t& f) w
turtles-own[0 }3 v& U! a* m3 l  r
trade-record-all
6 i* _1 ]; N9 E+ i% B0 l6 B;;a list of lists,
trade-record-one组成
- `2 m/ y/ A7 [/ M* `, Y. Xtrade-record-one
- o9 w/ p/ \5 ?! H. D" Q; u;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% Z2 R& \9 b; n
+ g3 ]- U  S1 `, w4 F0 q# _6 T
;;[
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' d1 F) ~
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]+ g0 ?0 z8 x9 S3 n0 `4 V
credibility-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list7 \1 w, X/ @6 x
neighbor-total" F8 O; b) j% c
;;
记录该turtle的邻居节点的数目! Y) t7 j. V, @, j+ L; ^
trade-time; a0 y# X: u* \2 E8 L1 q
;;
当前发生交易的turtle的交易时间
- A/ e- e9 D' z) v8 gappraise-give) i1 U6 |) r/ ?# \& G
;;
当前发生交易时给出的评价8 n( ?' _' e! |) e/ k5 K. M
appraise-receive% K) Q- ?" f  N6 Z$ u. J
;;
当前发生交易时收到的评价
) [5 e3 |' M' b$ Q; v. \appraise-time3 P3 M$ Y* z! A" Q0 J
;;
当前发生交易时的评价时间% |9 h. v. h2 A" S% [' ]
local-reputation-now;;此次交易后相对于对方turtle的局部声誉& P' h6 u5 |8 ~0 g4 U3 g# K8 B9 c
trade-times-total9 P% P9 P8 i" d
;;
与当前turtle的交易总次数
% q( ?* m% `$ S; ktrade-money-total
( K: E; n8 y- b. Q;;
与当前turtle的交易总金额
. j0 {4 ^4 K% u, V% ?local-reputation
" v  @5 V3 c% b4 G; j; a( d3 {global-reputation
6 ]% g3 t9 d: ~- lcredibility
9 N% E9 @: |* X3 r, W" l! I3 s;;
评价可信度,每次交易后都需要更新! k6 E3 \8 O- w& b) V8 m9 K) d
credibility-all
( M, u/ M6 ]7 V# N1 W;;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
' m) f' D" \! C* B3 T( u7 _5 ~7 u6 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
( v+ I2 _9 a! ?6 R' O" z- ?; X, zcredibility-one8 V5 q  j# Q& S; g' P
;;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
+ T7 e- A. v  Q1 U  U4 ~global-proportion# s! ~" ?+ Z- f( p
customer9 t7 l6 @: m) o" a) b& `# C- X
customer-no
) O# k5 W. B# W$ strust-ok+ O1 O+ Z5 E; F
trade-record-one-len;;trade-record-one的长度
- C6 g8 v! Y4 U0 y: K]
4 w2 o# e* H0 c1 ~# R2 x* @- t5 Z+ q6 l" j" U
;;setup procedure
' Y. U, O/ l3 S; z
) Y6 M2 e  S& J/ yto setup& j3 B2 E1 _3 m1 [0 P* R: Q% j& V6 `

/ ~3 _3 H  i$ [/ H% W, k6 vca
4 r+ a* z5 `0 h0 S0 h, h7 F
- o3 e3 Q9 M& s) w' F4 Z
initialize-settings
9 o% _* S+ H2 Y& u7 C5 I
9 d- s  {/ O* J% ?
crt people [setup-turtles]
7 y' k5 l' _. ?

1 T; X9 a7 Q7 r* }reset-timer
6 d+ h2 Y; p0 I/ b7 w% X

' _# W; m1 g4 z/ M/ Q7 Spoll-class
8 @# m) W1 W1 S. [4 @# u  K8 R. F

$ U. g: l9 R. [) l) m. Ysetup-plots
2 q- c2 W3 C2 t" E

+ d% F3 E7 l% a" E' [; ^do-plots
+ V4 b! G; Y, d" t( k
end, |& F; @" B6 ?& v

1 a8 K4 X! \& r3 [4 E. Wto initialize-settings$ T% q+ |* R7 v* Q, [) G
6 W" V4 h' y: I/ d- e
set global-reputation-list []

5 @1 ?, x! Z: _! i4 x
' W& g5 v  b: G1 _7 l! ?  Iset credibility-list n-values people [0.5]
0 l+ U/ ?9 Y  _2 }4 X! n/ f9 g+ I
, U  a6 m! p' ^# Z
set honest-service 0
# h' G% F8 L& M) c( c7 s0 K
9 G9 c2 t1 R/ x1 v5 `! P# e# Z6 V
set unhonest-service 0
+ T* @; c. J* }( B5 `" `3 }
2 T3 M4 h/ V% `) B* g8 P/ _2 K+ }
set oscillation 0
7 u$ f0 y1 ~5 r7 t5 U" ~" b" G) z& t
( H5 ?  o! u7 J* p
set rand-dynamic 0
# _3 W8 r1 l( u% y/ b* m5 f, n
end$ _9 w+ m  i: E; L. n( N5 w
8 i. e/ K& H; k9 o) Y
to setup-turtles 1 @2 {9 X. Q5 p) P8 Y! m4 Q6 I
set shape "person"
( u' g7 g  r5 z7 ~/ Y7 Esetxy random-xcor random-ycor- C+ ?$ p( A3 s) j5 N/ U. B
set trade-record-one []' Q' [5 N6 e% P  P+ R
! Q/ O5 ~5 D4 m; J
set trade-record-all n-values people [(list (? + 1) 0 0)] . ^! n4 `% Z- m6 a  z; F
! K+ A, o( `% U5 ]& D$ S
set trade-record-current []
1 O4 N; k+ Y1 }+ iset credibility-receive []3 k! y& {3 t/ O
set local-reputation 0.5/ ?5 [$ H- k7 N: m
set neighbor-total 0
9 t, u' e2 I/ _+ q) Bset trade-times-total 0" |: ]2 ~  ~! x6 v8 b2 b) E
set trade-money-total 0
6 w/ o8 a& J3 ]# P% s' eset customer nobody' |# V5 U8 \7 y1 K( E
set credibility-all n-values people [creat-credibility]  c4 r; P/ M* z4 o) @
set credibility n-values people [-1], J: }+ q  h: ^7 h/ I  K" ~4 A
get-color, `6 _6 T, }& i* h; ^. P- h( j  w
! I# M  V* V# |5 D- }6 D
end% k" ~9 C2 Y4 _7 \$ f# l

  j3 k* \& o3 F+ Q/ M' vto-report creat-credibility
$ y. ]9 |1 G8 M3 A1 X8 Rreport n-values people [0.5]
  V) h* j+ K. M! N5 v8 G0 l# _end
- q& H$ K& Y0 K. W; Y2 F
  z% s  T$ T" ]: |9 }to setup-plots' @0 K0 b  f# U/ t. H

8 N- G  A/ J" G1 I( tset xmax 30
; p( e3 V4 n, L  T5 ~* Y

$ Y$ |- N" n  H7 J2 [8 Z  hset ymax 1.0

& t5 P. a% r5 t" B8 n  H5 V+ w, x5 h# n' j3 ~8 O3 s
clear-all-plots
; L- b1 v: t7 Y1 g0 C" m

* k- C% N  B" [5 w5 }/ {setup-plot1

4 M9 \. `3 U. f0 g2 N  `% Q6 k6 T
3 U2 I$ _* ?9 C0 r- f  usetup-plot2
6 V) J) E+ O' K% }' ?

* i4 ~" z5 z% m) Q1 a/ E! _* j# psetup-plot3
0 J4 D$ h% L$ N' a3 s0 P2 ]
end4 B, |- }0 [2 R7 b9 U7 j
9 L+ O1 z: w  P
;;run time procedures( z  K1 G& U- L, `1 I% l

9 W  F& N# W! T; Q6 x9 r4 N5 Y8 Qto go+ k8 ?& F2 ]; S: c  a: t' L( r2 X
$ i! R% e0 V" ?. r* [# [( y
ask turtles [do-business]
/ Q) K  S: A0 I4 J" S5 Y  G5 u. c
end8 c( ?' |6 L0 B6 `9 x( w4 Y
/ U' C7 S' n5 C# h5 y& }
to do-business ! W7 W- w/ ~  S$ m$ }* c

0 U$ ^( ]# {: ^6 p& K8 v
8 ^9 i5 P/ o% N1 u1 Hrt random 360

" p, Q* R" `" W: p# [) d9 C, E
  @+ Q) V4 ?5 N! E; m# Cfd 1
4 g  l6 M' P4 }2 J: h8 A
( |7 _1 V/ |( f4 a7 u
ifelse(other turtles-here != nobody)[
2 L! {- F% R5 b# z/ I7 V% V' C

8 N+ R  _; n7 u4 N- V1 vset customer one-of other turtles-here

/ X6 q; [% e4 F, x
6 m6 Q4 l9 _! j;; set [customer] of customer myself

' u/ m/ L7 k; E* A" {' `/ b( F
. _1 u/ d: x  l  {  T( {8 Bset [trade-record-one] of self item (([who] of customer) - 1)
$ S3 P6 q" B# L% [  i- s5 ?[trade-record-all]of self
: w, Y; Y* k4 _- v% C;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 j( E* n: j3 [! \: H2 j' l0 A! z9 W1 Y+ H
set [trade-record-one] of customer item (([who] of self) - 1)% A0 o) v4 G4 J+ h' ]- w
[trade-record-all]of customer

& Z2 a2 _4 Z8 L. o* A1 ]& k) \( ^3 }" Z$ z; A3 j% c$ l
set [trade-record-one-len] of self length [trade-record-one] of self
8 J) \1 e# o6 y' ?, s: Y% n* w; v

) e  X$ a; Q5 b9 u# cset trade-record-current( list (timer) (random money-upper-limit))

  {7 C6 o! W" x
2 |% v$ T- j3 o0 D, z5 `ask self [do-trust]: o8 {8 m( u$ H8 X$ o. m
;;
先求ij的信任度
" `1 @6 s/ z3 ?0 U% q% v- U3 r" N0 ?/ Q1 {( s
if ([trust-ok] of self)
' e3 S6 S& q) D; B2 `  @! I;;
根据ij的信任度来决定是否与j进行交易[
1 E; c6 K# A, {; b7 Y" {ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: x& D3 }( Q, M% K% R, E/ W% h6 V
' v; q2 m) h. P. S$ r. S4 j[

1 u: m1 z. @- l6 ]7 S, L$ ?9 M8 r" u, y. D" I) y
do-trade

0 J4 @% @' s5 u7 [6 U1 }0 n0 t: |2 H2 ]
update-credibility-ijl

# l  l" L5 N5 O& E) q1 ]9 t6 H6 e, I) V% R' D# u
update-credibility-list
' a' ~: ]" x6 j/ J) C6 |3 P  \
  ^& T# @3 E7 L, N

& ~& P. y. W6 Eupdate-global-reputation-list
5 i5 P6 |4 n, x: }
2 v8 u' }# D2 u' t, K/ z  g
poll-class
6 R" e: \, I% i7 r

" g6 e8 _8 w6 @# Pget-color
( ~, N& X7 x# T' h/ A. b7 ^+ @
9 G2 u  p3 O1 P- r
]]
7 D& B3 M7 ~1 z! X
+ W( m0 F8 Q, q2 _4 Y0 |;;
如果所得的信任度满足条件,则进行交易
- i3 S/ G& p, Z& U9 _1 O! y1 S  _* `- X0 y
[
$ b+ k1 n7 r5 g$ o' c; Q" n

% m# S1 w1 ?7 K! @0 [$ A' Krt random 360

9 K' T8 x6 V/ J: h- R( G  Y9 ~* ~) L0 R: A; g
fd 1

: z& ]1 W, e# X* P! l) s3 F9 V* Y( e5 o8 b9 e# |
]

3 a1 Y6 U( {. T9 c0 v  u5 N& ]& E- x" E
end
! U9 N# d  m" ]5 W: @

4 E9 g, }% v: y/ q5 Uto do-trust 1 p+ @5 ]+ k& @9 k. K* P
set trust-ok False& X9 w' O% m+ f' p
  y/ L( u4 m: W, G

  q% {9 C9 f8 i$ ^8 w5 M7 Wlet max-trade-times 0  |* C# n7 Q2 J/ M  U" ]) B
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 A- G* o1 |  h& o& T& y7 g9 jlet max-trade-money 0. j. o3 A( Q* K* r% z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: [6 ^% X( \" H4 M; X% E9 plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, v/ s0 e5 W# o" w7 q5 ?# M$ Z
+ M  Y7 W) s. W8 [1 [

( Y, ~3 p' K+ R9 ?get-global-proportion
- l. S! A* F  |# o; L& s  Ylet trust-value9 e5 n+ w5 L7 J& r
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)

3 u3 }1 o8 H9 d7 ~, y, u% v1 \if(trust-value > trade-trust-value)
1 P  t5 F1 M& C# Z; Z" F$ ?[set trust-ok true]
( u3 S6 m3 d4 Oend
) S" l6 @6 j9 B* A" N& D  R
/ s- \% J( I* f8 m! Uto get-global-proportion
* I# }! P! j0 \ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ k5 p8 J" g( j$ |6 `7 K5 B0 x9 c
[set global-proportion 0]2 v5 n7 w( q/ L2 f8 p7 _8 j  @
[let i 02 |' r" `9 j0 i) E) h2 |
let sum-money 0
  v  Q7 B4 S. }* T; H; f; `while[ i < people]- i* Y1 o+ Y' M! {
[( v9 y3 t! z. h. L1 \( M! T
if( length (item i  |/ Y0 r0 m( ~' O( ?% l2 ^( E2 N
[trade-record-all] of customer) > 3 )
+ ^* o( O/ v7 ~& c
[6 G( g8 i) Q; V" e/ q' S
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ B4 h+ D5 U9 Z7 \: q
]
/ ^3 a+ s$ w1 b8 V! j& P# H. y; z) i]
' y% W* y" z0 k8 Olet j 0
* R( z% f. V% glet note 0
9 H; T4 A* j2 b7 U5 |while[ j < people]$ V4 ]) W  k; {- ^
[0 \( ?# c5 `8 I/ b; b+ s
if( length (item i( N+ e! v  ]7 o
[trade-record-all] of customer) > 3 )

- v: `6 _6 Z8 S' O( |, l[
0 q, i7 D* I. W$ S, |ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 P1 N' V& V) v% V
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* u: ~; j; h* p4 I& n8 J[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 ~8 H4 ]0 Z4 B9 \]
& D: y! {3 `* r$ m]
, \/ R7 m# E; {3 d4 Jset global-proportion note  J  S; j6 [- }5 |: G+ [' I' W2 L
]
, g: {' b0 c) a4 y: l1 D4 ^" Fend
4 m* ~/ a: P. G( g) D9 v( J; u4 P3 z
to do-trade
% g  R( L4 q! I1 Q;;
这个过程实际上是给双方作出评价的过程6 q# o) q( y7 J- t) X" f' @  y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- j, y, f6 D6 H& t4 Kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 x% s  L4 J8 S$ T( M3 u$ lset trade-record-current lput(timer) trade-record-current
$ y4 [  k: ~/ v; _$ t;;
评价时间
1 m. e& i+ n' `; k+ E& K2 t% Dask myself [. p+ X( e9 u' j1 i! \' F6 F
update-local-reputation
/ y! s, o- `1 d$ S% Y/ M" Zset trade-record-current lput([local-reputation] of myself) trade-record-current" ^, `% f. O# K3 U. K9 @/ _
]
% Z$ Y2 O( Y5 o" Q9 t. gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
3 F% r  x9 v% a; ~( u) C! m0 R;;
将此次交易的记录加入到trade-record-one
9 d" O& U# T0 O* aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 V" M* a9 O: e0 e
let note (item 2 trade-record-current )
( {: ^+ M; b! x) Hset trade-record-current
; f1 w/ Y7 [6 [# x& l$ [0 |! ?(replace-item 2 trade-record-current (item 3 trade-record-current))

  m3 L; y: p/ O7 v4 s+ S, Z# p, lset trade-record-current
$ H6 ?, D% o* m6 V(replace-item 3 trade-record-current note)
% q" f% u& ?6 S' B
- u6 z! u7 a, @+ {! R
3 W9 T& k: c$ H1 Q. E- R
ask customer [) f% e" F, g! g# H8 ~
update-local-reputation
  T4 k$ j; J/ y- |. Gset trade-record-current
3 D$ m" ?; R3 X" V1 B(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  f: l1 y3 }0 g! |. p, C
]
; @! o7 |5 ^5 q4 F" _# N( k
" J+ ]) h: ^  |( ]0 H
: _: O# {( Q+ ~  w" f. _9 ~0 X
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ a( Y( k0 X) ?4 ^
0 Q2 n+ o5 m$ [4 a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): l& c& \/ x; Y4 z7 g2 R
;;
将此次交易的记录加入到customertrade-record-all
6 \* F; I* `' L' Iend
- m6 b- y( V: Y$ _  O
3 A5 G! J& z6 ]! x1 Mto update-local-reputation
1 m& w1 S/ J) T* ?set [trade-record-one-len] of myself length [trade-record-one] of myself* x0 l9 U% i$ j; ~

( w" n) `8 ]% L* ?. d2 E2 Q
- b2 f" q, O' E, g+ `5 Y; E;;if [trade-record-one-len] of myself > 3
5 C1 k& y" V1 R$ t0 S- v% f% V$ j
update-neighbor-total  o6 G; ]- K# |6 W( \
;;
更新邻居节点的数目,在此进行
8 m3 a' k" m) M1 p: Dlet i 3; a  E! ^9 O7 I& N
let sum-time 0
4 x: t: p9 P! `! }6 n2 Lwhile[i < [trade-record-one-len] of myself]. X" N# M) z2 x$ P% T. q
[
0 h: L, ?- Z" d" Z! d1 F# a/ O7 c* F% Xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ X+ o3 e; y) a; M
set i, L& v8 r# p7 w% g3 I$ K! T! y
( i + 1)

! ?& g% k; K9 d3 d* v( P/ `]
+ F1 d  O8 r. i1 Ylet j 3+ O7 Y0 K( k3 Z9 ?2 l
let sum-money 0) T/ o! n) ~1 ^+ d: w( z7 t
while[j < [trade-record-one-len] of myself]- C/ ~% F$ o; m8 l! n6 x% s
[' p) t' n, q6 n; ?) T& ]
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)) E2 s5 X' e- E( Y5 J$ l
set j
% z0 G; V; W2 v$ Y( j + 1)
  _* ]" @9 O2 O/ E! E8 b& D' o
]( N2 ?, x  |2 L
let k 3
7 x2 z" s: C( X$ D1 Llet power 0
8 F& a  ^3 U- b. O: ?/ ]+ @let local 0
9 Q) u- z4 r  N4 i7 Twhile [k <[trade-record-one-len] of myself]
0 a* X6 |  c' m( O; e- b[
" z; A; Z0 ^1 e' s1 D* M# {7 G% ^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) + z" q+ @* q8 U8 u# J" @; v
set k (k + 1)/ p' ~1 K7 p% O6 n" G+ t# Z
]8 b5 \, C( }8 R5 [4 n4 q' i
set [local-reputation] of myself (local)* [, c! {+ t4 k' ?# J: Q
end
" _; Y7 g9 i+ i3 X* h  V/ R" [: M# R+ F+ Z  z% e
to update-neighbor-total
0 \/ z& ~: D7 m. M: a- F) o/ L4 X7 w, ]& C9 s7 ]
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. J8 L, \: ]/ I% y/ D4 K: {; a* v7 p: \" H' `6 m& Y8 I
2 m) G6 Z7 ~! j3 l5 U
end
$ q1 |) b8 n' x5 K1 d# r5 {5 A
. ~/ d/ C* u0 e  h) Z0 tto update-credibility-ijl 2 r3 \* w2 D. m6 n: O! m' j
$ l! a, O$ Z; O& S# 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。
# |9 S9 w7 Q5 g, U4 Ilet l 0, F% M  L" L  q$ i0 @7 X
while[ l < people ]
0 B" n( ?  S9 q: [& ^6 b5 o;;
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* J9 r5 W. A2 r, U
[" S8 d9 ]$ |5 }3 e" C9 V* k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 y$ y7 N) h0 u) ?* L6 t0 ?/ cif (trade-record-one-j-l-len > 3)
% S. P/ l4 }/ W/ W: y, c) O' \! @: g; C& [[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 d0 ?  T3 v3 }: N7 t, b3 L: x
let i 3
8 V6 R7 P- z3 p: I7 Xlet sum-time 0( i- V3 G1 I5 b# U* V) b
while[i < trade-record-one-len]
1 W% v8 @, O5 H[
! ]; f4 ]2 n* qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 Z% f5 [& ?( |0 O
set i
- u  W. y/ G. ~9 e3 l( i + 1)
" Y; p% v5 d! g$ L! s: g
]
( S* Y9 w$ l1 m- g& _3 nlet credibility-i-j-l 0
. p/ @2 r7 j( D" B8 O+ |;;i
评价(jjl的评价)) U, m. C+ J0 s' p+ [" w$ v
let j 35 t2 H7 B. k- {, d2 z
let k 4- X' ]& ~3 H; g" S4 Y+ z* g0 O5 v
while[j < trade-record-one-len]) q7 @5 e! Y, s& R7 K  O# V+ W& ~
[
% j! W, l; }! lwhile [((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
% o  x  x- w5 E6 Rset 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)
" q7 {3 v( |1 S* o. s2 l& ?. A$ t  _, iset j: T6 P9 P5 D( D# A+ M4 @: O1 V
( j + 1)
; z2 ~: b, y( t  f6 L
]4 s: O/ G( @( j9 T* d) |# A
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 ))
0 g& e9 r: n' c* l1 `: v0 M$ y. H4 `9 [$ x8 x, w
4 a* E/ A' K* h6 p% [) a
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! l6 q. [4 U% s& P0 Y8 d;;
及时更新il的评价质量的评价; Y1 t6 {7 @& c+ w  b# C
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# \; C/ D4 o& I1 Oset l (l + 1): M0 c6 r& [: y  y9 t2 r5 k
]. |& R% N0 z7 {% T) ]) G8 l
end  y+ u! X" y4 V  a/ C- e

6 Q2 Z+ _  }# ?& N+ H# p* Z- M% r  zto update-credibility-list
7 l* |2 f8 u# d. s- X6 @* q$ Olet i 0
3 z8 i, U2 C, i  q" xwhile[i < people]
/ b- r) ?1 j5 h- \[7 k# B" t* D5 }" G
let j 0
, V$ }8 N9 p/ B7 e8 |. Hlet note 0
4 P6 F3 \/ i- tlet k 0  h1 N5 l1 f$ ]9 T  [  e% R
;;
计作出过评价的邻居节点的数目$ W+ Z9 ~$ d! W! X$ x
while[j < people]
# ?- l7 {& o8 e6 l; k' ^5 f* @: E[
# D; Q: Q: `( W3 s1 `, V7 G2 f1 ~if (item j( [credibility] of turtle (i + 1)) != -1)
& y4 t5 a8 }$ V;;
判断是否给本turtle的评价质量做出过评价的节点8 X! \  Y1 b; r( f5 m, d$ m8 s
[set note (note + item j ([credibility]of turtle (i + 1)))
, v% l& n5 _$ {6 m  A8 n;;*(exp (-(people - 2)))/(people - 2))]
. `* x7 X8 S+ {* e" y7 f$ A3 w
set k (k + 1)0 [) J4 I; V0 K% B
]% b; I4 |3 e; Q$ @
set j (j + 1)0 D- Z  f8 s1 @4 @0 I/ {1 {
]
* u! R& Y) b$ ?7 hset note (note *(exp (- (1 / k)))/ k)( k! u2 M1 r1 J
set credibility-list (replace-item i credibility-list note)" U% ?2 B/ p& x' Y! Z1 ?7 I& j9 s
set i (i + 1)8 j( e0 {# Q2 d4 i( Y7 m: X
]& \6 |5 B' ?+ K6 ~$ U: N/ Q2 y
end" v, V- q, O3 C' j% U& n3 w

* _1 E& @7 n: P+ y5 G- T, Hto update-global-reputation-list. V5 g. E, @$ d' M* W5 C
let j 05 a" ~/ X7 p& y: E9 D6 n4 h' N& E
while[j < people]
& L, p' k3 j- H2 W' y( ?( `  U[4 x6 A5 e+ a, P+ d" G9 |
let new 0
7 M8 z; q  I& A0 i6 ]7 k;;
暂存新的一个全局声誉4 N0 ?! _+ |0 K! [6 w  v; v
let i 00 v1 Z# v! m7 o+ D% I
let sum-money 0" w, V" ]3 P+ ^
let credibility-money 0, j* g* J) {% W; f8 ?
while [i < people]$ `) ?9 D7 d  V' c  l
[2 o# t7 u9 \1 \
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ d# O( k9 E5 }. f/ {% g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 \! N$ W$ D! r' b' G7 U
set i (i + 1)
. a" t" i# {: a]
( H1 b) J3 G. p: |let k 0+ q' r, L4 S8 r7 u% P1 m' w
let new1 0
( h, y+ p( I8 ?( H8 Bwhile [k < people]8 w/ w5 ?0 L6 X; x1 L: f. A
[
& [$ `% Y& [7 Z0 y! Wset 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)$ a! f8 J* G3 k5 W- G9 n- Y
set k (k + 1)
* ]: W* ]4 V6 `& h; {( h]/ g  G( S( `5 h' U' y4 T
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " @6 d% N$ z6 @. P4 }' R+ R" l% f1 k7 c
set global-reputation-list (replace-item j global-reputation-list new)0 m4 i0 I0 ?" S6 ^1 s7 Z5 }
set j (j + 1)
2 P" o0 }. |% ^; a]
9 D: O2 n% P# l9 ^end
6 q" Z& O* ~8 A/ C& ~/ f- p; m# h" ^6 p: i( q9 e# B$ f7 h

$ ?1 [/ O0 H8 A, p* Q7 \9 S; K1 n7 Q$ t6 |
to get-color" @" P+ [$ |1 {" i* d. A
& k0 k; J. K: p7 A3 J
set color blue

: _3 r9 C% V+ gend( A$ y$ _& D2 P5 J& @9 ?

% \7 B$ s( U; H: Q" Y; ^to poll-class( j2 v7 r/ v% {) r' V2 B6 m
end1 B: |, B, h8 Z; L7 v/ E
9 |+ z( w# u2 `, [; k! p! S" {. s3 V; q
to setup-plot1
& n- c& J( [7 f
7 v+ f9 i9 E% b/ T' p' V- Mset-current-plot "Trends-of-Local-reputation"
6 t' @# b# V7 p- M9 z. i; j
' y" d% m5 }' u+ f: M, ^: N
set-plot-x-range 0 xmax

2 U7 E  m% P* a$ n. [* Z- C
3 k& s$ ?+ t- [9 {1 c& oset-plot-y-range 0.0 ymax
1 d/ i8 R' Q$ Z/ s7 A1 N) c$ j  r* I
end0 `5 ]# W9 {8 G0 ?

; W  |  f6 m- @) M: N( w& Jto setup-plot2" p4 T1 r5 C+ l9 [" J
8 ]& e8 }) I- X
set-current-plot "Trends-of-global-reputation"
. c! D/ ]/ ?% Y, i2 Z2 P5 F. Z' a

6 g" A# }6 H; E$ }- h. Zset-plot-x-range 0 xmax

: ]9 x: w# Y& Z* ^
. A3 b* Y/ R! s( J" w. Oset-plot-y-range 0.0 ymax
" E" u; G: Q( B. q4 U
end$ Z; @: h4 B. v/ L) A  l

3 ~0 D1 h' t2 q, Dto setup-plot3% [3 `  C) S/ E) b

0 u+ y! F( r6 }' }" [( [6 Kset-current-plot "Trends-of-credibility"

, t$ M# a4 k. s- H( k# M0 b7 a: \4 r9 z1 ^! p" m. l1 o
set-plot-x-range 0 xmax

, T  P2 w3 A5 I! ^0 z+ H' @% g: }8 N3 J1 j5 X5 E7 `, |+ i
set-plot-y-range 0.0 ymax

+ m1 |% P9 ?. |* `) iend$ P( U; C9 |% E% Q

( W  Y" @# C: ]to do-plots3 \5 T; ?( ~9 H0 ]# l
set-current-plot "Trends-of-Local-reputation"3 \( o2 o3 x" g+ {$ q
set-current-plot-pen "Honest service"( V1 w+ h% U% I9 Q6 l
end- q* W8 b: C/ A" }( t

3 W1 Z% N, f2 }8 n[ 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.3 W' U8 c5 O& F+ \0 F0 ^

4 B) Q; O* m9 C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, 2026-3-2 19:21 , Processed in 0.028838 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