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: 15826|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:9 Q3 ]+ p/ _8 l% Y, P
to do-business " u6 k# K" T1 ], W- V  v
rt random 360
, \" i$ E* N) C, D/ d/ x fd 1
# L+ [- v% y# r( C7 \; o% t ifelse(other turtles-here != nobody)[
9 |, ~) c% }4 E" 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# S4 J% ]0 q+ g0 `
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & ?7 ^$ W- H/ M3 ?6 h( U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 R8 j5 B& Z( Z' v+ k
   set [trade-record-one-len] of self length [trade-record-one] of self0 p; Y6 E, Z0 q6 g
   set trade-record-current( list (timer) (random money-upper-limit))" P6 K3 O* H, l% b$ w2 F
! j8 C9 A5 v, E
问题的提示如下:
' Q) L9 |$ p) L; }! t. j% m
  m3 N2 Q7 S: `, S# r1 l8 F0 C9 herror while turtle 50 running OF in procedure DO-BUSINESS
; D5 e  E  D3 s% [4 X9 m" ^* L2 W  called by procedure GO8 `% _( z4 U# g  u3 c/ ^; N1 G4 `
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 p: C* a# S- ^- M1 L: m$ [) }
(halted running of go)
- n0 S. ?$ t3 T) q) }5 s
" e2 S5 O$ @, x6 U& Q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~~
; @: X; @$ ]4 D: Q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
/ b+ s: ?7 O9 K- [globals[- C! |+ S) B, X. @  C8 B
xmax) C/ X& y% G2 s7 S
ymax5 i7 q. b6 c6 ?; ]7 d
global-reputation-list, ~. J( K) }0 |- ?9 J' k( s

8 g% w* N6 A3 R: `;;
每一个turtle的全局声誉都存在此LIST  G% b( B: B. e& j$ p9 X
credibility-list& k0 p* o1 `, _0 |5 M, w
;;
每一个turtle的评价可信度
" F6 R* w  S$ ]  `5 {  Hhonest-service5 \7 D  U9 x% J. e
unhonest-service5 ^0 y; z  j4 K; r5 X
oscillation5 S! B$ V( z% n* n" n, G
rand-dynamic
8 d# c! a4 Q! N. z5 i5 S8 p]
+ l8 r! y+ Y! H' L. }$ A! n  s/ b) g% ]8 U6 m& @. T
turtles-own[9 g: z- ]2 [4 U0 s4 [! F
trade-record-all6 p# U4 q4 Z9 v3 d* `% n; `
;;a list of lists,
trade-record-one组成; C4 v( o4 p: b# v8 B) e% }8 `. q
trade-record-one, r7 C) e! P& A* {2 T+ I  K7 F1 [" A
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* Y$ F, |" f4 V$ E' k
4 j9 f: q0 c$ L; @9 f0 a;;[
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]]
+ a# Z4 Y3 B- }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]
# @6 F$ z% c3 }* t4 {/ y% ycredibility-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
/ d; b  Q1 ^2 G8 n; `3 yneighbor-total
5 I: Z: a/ z0 u! ~9 s;;
记录该turtle的邻居节点的数目
% y2 x: x1 ?( J3 `% ttrade-time0 v" x0 f7 z, g( L) Z% e. m
;;
当前发生交易的turtle的交易时间! s; u1 [7 z6 r+ F- f1 k& l) V
appraise-give" V: q  E  B) e
;;
当前发生交易时给出的评价- A' _: n; `* [/ D2 R/ w
appraise-receive- l4 g- j3 E6 H: l
;;
当前发生交易时收到的评价8 w) N! x0 `6 {4 p( X0 f
appraise-time
6 l' {" Y. q4 j' A1 i;;
当前发生交易时的评价时间
! c. G9 X- V" x+ O& m2 ylocal-reputation-now;;此次交易后相对于对方turtle的局部声誉* L$ M+ s& [+ Q' d, |* ?6 u
trade-times-total2 e5 l6 d8 [+ d3 \! d6 b) i
;;
与当前turtle的交易总次数
; t+ ]. U* G2 g! p; F0 Rtrade-money-total9 x7 J! G8 w' d# Q# c0 R* @! I$ |/ S) x
;;
与当前turtle的交易总金额
0 O& {4 H$ C/ Q: ]5 D: ]local-reputation( Z5 m4 ^* d4 ]* @4 Q% W9 P: g
global-reputation2 ?& X7 Y* B$ @0 y! u  X0 Q! h
credibility4 x* u6 l  e* E; r& _  s/ C
;;
评价可信度,每次交易后都需要更新
- K4 n- P) G1 C7 |. A" e) Dcredibility-all
3 h5 {/ V+ I. e8 ^8 ?4 i9 ?;;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/ ~" f" ?2 n) ^. u( R- ^
! F8 M# x: v+ t1 o: V
;;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0.57 {+ J0 B( M4 [& j: {1 P
credibility-one
, W1 T' u) m0 I  ~( w6 Q;;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+ l" L" S8 |1 s& y7 }( k" s
global-proportion
9 _1 u# ^/ D" ]3 O0 U7 Ucustomer5 E! u1 Y+ F) Q) A' Z
customer-no7 q# l; y% M6 _! M: u! T
trust-ok
7 R/ A  y; ~; N7 h7 i  btrade-record-one-len;;trade-record-one的长度0 k5 ~4 v* a" F/ E
]
. P& L5 y: o1 l0 D$ E
; V7 i7 O) X, Q- L;;setup procedure& M* \8 ~' |7 `. |& Y7 N

. c4 G# ^4 H4 ?$ k8 m- p: j! ]to setup
$ E0 m6 \( O* A  d2 d2 G# r1 o
( @0 Z3 G, v3 g& p# Y* T4 K7 o; oca

, K& i: J; \3 C$ b, [3 v" }# f9 b& g8 i: [5 }
initialize-settings
( B0 V' u3 _( \8 J; i& i
$ y2 q3 h6 Q1 d
crt people [setup-turtles]

$ ]% P6 A+ \3 q( a+ O+ t6 r2 A$ r$ L- _$ Q
reset-timer
6 d- R, e* Z  I  }) e4 ^& s6 D  O* {

  w, l& r' J" p) L! xpoll-class
8 k( L4 y; ~: h! I7 C: [  B+ W) X

% G: I" Z5 W+ _setup-plots
  u; W# p6 R- b

0 t4 l/ f( ?& z; i+ Z" Ydo-plots

5 O$ I  A7 G# d% @$ q" t$ vend+ ^! W* R5 ^  Y& p

6 @& s" E$ M  C9 Rto initialize-settings! `! X5 j2 U" g& s4 ]

: r( j; |: Q" T. K0 h" aset global-reputation-list []

9 t, z$ v6 c/ f4 ?
, X( G4 J7 H  c% _) h) I  Pset credibility-list n-values people [0.5]

" `2 X( @8 e& q* j" _3 R3 T3 E( Y5 u* u* @8 C/ b
set honest-service 0
; }8 {! Z4 i" c# Y: Q8 c

+ M9 ]- A$ c- ]3 C2 w$ ~  pset unhonest-service 0

3 n' ]. V7 _5 ]8 x
4 _" u3 {* A# ^7 f9 rset oscillation 0

/ B; B9 i" I, N9 a, `; M3 s* k. E' H4 O6 s1 `2 h
set rand-dynamic 0
, W- t; d$ X9 U% ^
end
7 U" P" N( n! }0 e% q3 ?/ G
3 X" z% T0 S( x( zto setup-turtles . w6 E5 h+ A8 J6 @8 d5 ?0 {
set shape "person"
+ b2 j. x- [: y6 d8 vsetxy random-xcor random-ycor" Z& t5 ]4 {: R0 g8 r9 m
set trade-record-one []
' ^; r# P( f! Z/ p2 e
& b6 m# b% z$ \* u( O
set trade-record-all n-values people [(list (? + 1) 0 0)]
4 y7 T4 m( k& u) u0 z
8 J+ a$ Q+ J8 x
set trade-record-current []
* C+ y& A/ @! ?/ I  \: mset credibility-receive []- _; _) u5 f* x1 R# @" |+ L
set local-reputation 0.5
( N2 A1 v4 h# b4 Gset neighbor-total 0- O8 V2 ?/ Q* V& z) D( ~
set trade-times-total 0
! S8 v9 k" Z, T1 ?; Y% \set trade-money-total 0* O7 x+ i6 K9 j/ F$ m
set customer nobody' L, b! }  c  D0 U' ^
set credibility-all n-values people [creat-credibility]! U) e9 p( t- _' y4 a/ {
set credibility n-values people [-1]  q9 s3 O3 T2 E+ e/ r
get-color& L5 q3 v3 I* x$ Z0 K# n1 Y% q

# E: O/ ~- `4 H3 w; h* Yend! O4 z4 d! i  T8 R9 F8 l

5 ~" O2 x3 E' H- I; E0 Kto-report creat-credibility' C* w8 ]; D2 b$ p( N% o1 p/ w
report n-values people [0.5]4 x6 j- k* Y9 ?5 ]
end2 L7 S- g% R9 t  g, J  B9 o

( Y* i' v1 y$ O% o, e9 Qto setup-plots
+ b' H/ o. w5 ~1 \, K
/ `$ K- v2 n, Xset xmax 30

. F" \' B3 w0 x0 u9 b$ y6 w' Z9 ~: g; J9 J! _5 p- r6 S9 s# d# ^* I1 ^
set ymax 1.0

, S3 p, V3 W$ A6 N% E4 Q$ U, M( m; A. w
clear-all-plots

( b# x( ~- l5 h) D. J% G: j
, b7 z1 r4 i: i. _- l$ `8 `setup-plot1
0 N% A: Q0 ?1 W7 u9 Z

0 ~" ^" o% i4 d& vsetup-plot2
0 K" K& Y! y: w( Q

1 I) |- E+ Z! z% i9 e9 ]; F! lsetup-plot3

8 i7 l! H$ |4 z: W5 M9 L, Y" c" v: wend9 u  Z, b, C& k
% k" _0 T' P! r) ^7 S
;;run time procedures: x3 W' k; M9 _7 G3 F2 E0 y

$ f4 g% L; X4 D7 f* I9 ~3 xto go
6 x, m& u& J$ z  v
" a7 C/ G* [4 s0 t  D) J, p# uask turtles [do-business]
7 Y# A0 X$ R8 ~6 r0 `8 S+ E. b
end
) z' H6 H: K+ U8 D/ H. N
7 k6 W) G9 G4 Z. [. B1 o  a% @- uto do-business ! g! v- m" Y" x& `$ G5 b0 }% [1 w
5 D( i5 y( B- Z% ^( N

3 `. a. x' b0 F% q3 V( Lrt random 360

: L" ]! w1 G% ~9 @3 E1 @" u  f" y% X
fd 1
  ?0 o1 k7 O5 J0 f  `

' B5 Y/ b% `* yifelse(other turtles-here != nobody)[

$ {- j. B% t) Y# V) |0 J+ q5 T; `8 m% z
set customer one-of other turtles-here

; Z' R9 r3 k0 P# V
8 a  @8 v9 Q' k; ?, E) r- f2 V;; set [customer] of customer myself
$ e4 f1 z# [4 C9 C

2 V  z- {1 S+ uset [trade-record-one] of self item (([who] of customer) - 1)
/ P4 K( N6 q* l% g6 x3 m, w[trade-record-all]of self* Y8 W# r) Y( k" B7 R" K/ U
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ d( L' \9 s4 b2 Q0 h  L8 N% ~
) ]2 T. O; U. {3 M( B; s. H# qset [trade-record-one] of customer item (([who] of self) - 1)+ _  ^( N- |7 F. n' ~+ X" I
[trade-record-all]of customer
: [4 h7 V5 |3 I  N
  j6 x3 w* w$ A, x
set [trade-record-one-len] of self length [trade-record-one] of self
, b# ~( n5 ~# X6 G- V0 r0 j# Z' U# E

/ G' y# {: C2 X/ r" d1 Y' A/ @7 L3 Gset trade-record-current( list (timer) (random money-upper-limit))
: O9 ]! U0 L4 ]% [4 K8 [6 t9 R

& d' ~2 w6 p$ p' o7 _( Qask self [do-trust]% ^- P# e5 k& j' ]& x/ o% s. ]8 T
;;
先求ij的信任度6 S  }: Q- s+ b+ h: n# B
$ C5 m) ?& \8 j8 d, U2 {
if ([trust-ok] of self)7 x( J2 M* i% X7 u9 z
;;
根据ij的信任度来决定是否与j进行交易[
! K& c; a7 F! U) M5 s1 k' c5 oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- T* X* u' r/ p- N& z& T! D8 R

1 P/ o  \8 z3 O) G( A7 @[
/ V7 v6 J# Z7 i( c- _( o5 [

1 L, E# _" V1 X  kdo-trade

3 H) l" l# R3 u- `
3 j1 ], y2 P. i* ?3 b0 qupdate-credibility-ijl
% L" k9 m) f+ z4 N5 A

. I) u1 T  a5 v7 A9 ~- m( L! jupdate-credibility-list& ^' V0 b7 n2 c4 u

- e" }2 K3 Q& L3 V9 a/ \! S' K0 g0 d; L5 D  @
update-global-reputation-list

6 W- f3 L' G2 n! b# ~
% [' D7 |! X8 }. t" h0 h0 dpoll-class
& C# P7 F1 X  I; t3 e' W

. q$ g; w  o% |' O- o- k. fget-color
+ T3 d6 C, G$ q# }9 e
8 {# _* h! K* V4 `! x; a) N
]]0 E0 @3 W! Y3 V6 s" L- u
& m3 }1 E3 s1 @- r
;;
如果所得的信任度满足条件,则进行交易# y+ _, k) ]# W1 W* O( C

: r; v  D2 v1 m" w$ p[
3 P4 Y% H1 o& L

. x/ h0 q% \( rrt random 360

0 i1 s6 s$ J( j* J, F
, J! m! L0 n, ]% D2 nfd 1
( d5 ?2 N- [/ P: i

7 _, U9 z- ?( }; []
6 `. r. {1 \/ P& \. l

3 }- E2 i; d% v" K- D- I) I! Oend
, H$ Q4 s7 D+ f" [, W  R0 n: s: |& ?4 J

" E+ ~1 {5 ?! x( Jto do-trust 2 |: o8 a; y# t% p  ?, D
set trust-ok False
3 X- }, d2 r6 @# o; r7 f: W) F" }, D4 p, A( u3 d: B% ]1 K# Y

$ [+ P; ^( }1 B" Jlet max-trade-times 0  H; V4 A* K( {
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; j5 `2 K* W, u) U  e# i, N
let max-trade-money 0
3 _5 g( x& E9 ~+ R! sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- y; j. U8 q. j5 a6 l% h9 L
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  Y7 d& Q) R0 V/ |' {5 k! d6 J+ W! j) O, M1 Z8 I

9 }1 ~, w* t3 N' i3 ]! q! |get-global-proportion' R+ g! k7 ?1 F
let trust-value
+ N4 T. K3 |; i" {1 m! v6 \* d: tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( H. l5 F; U& T; d5 ]  A" z
if(trust-value > trade-trust-value)! ~% E- s8 F9 z& Y2 m
[set trust-ok true]3 K" i6 }. q4 A/ W. M
end, U& S/ f6 s! V8 X5 ?
; `$ E  B6 Z8 o0 a2 s; a! V
to get-global-proportion
' d3 l% A' M- M9 S4 I  a3 Lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! C% b7 V/ T/ W' K
[set global-proportion 0]/ \( t- s) u8 E; Y: M! b
[let i 0" u: W8 B& H: |9 s3 G
let sum-money 01 i4 v& H1 s8 x
while[ i < people]
- b  W8 X& F) r[
3 `% o5 z9 e# I6 n/ N  rif( length (item i
+ l! d1 R# q7 J! n! y3 A& g( g[trade-record-all] of customer) > 3 )
, e0 t+ g3 R" V: V+ f
[
+ K" W6 x5 `0 c' O9 dset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* F# o. H/ E9 F* S]5 C9 Q0 r4 J5 B: n! x* E
]1 B% g& v% Y: l5 n7 \: I: s/ W
let j 0: u$ `" @  a# Q
let note 0
8 ^$ e% y! u# e- ?while[ j < people]
4 w- t$ g! v. k7 D; w+ ?& u[
. l) z9 c+ l, }; Q% Zif( length (item i6 F6 V; I& S! H' [7 x
[trade-record-all] of customer) > 3 )
/ _& D% w5 h; Y1 K" e) A
[) u; A" x( P9 W0 \4 {
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 g2 N8 i3 ~) a! {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 q$ i) b5 J% \. p& f' R  z: a[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 B: o  x; O0 M]. ~+ W- N8 Q- i+ z
]
6 @( L8 b& s8 i; mset global-proportion note' K9 J8 B! q& t4 ]) ]! O) u
]/ t! w# X0 Z# N1 a; h3 |
end
" ^5 g  c( G& r  K+ T
" s- t- r/ v- Xto do-trade
3 t2 {: {( N  |6 r. Z7 q8 W, Z# p;;
这个过程实际上是给双方作出评价的过程0 @5 }1 l. q  P5 R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# Y2 a: s: ]- ?# d7 m$ @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ g" s3 W. o7 g: T  e9 @1 i
set trade-record-current lput(timer) trade-record-current) m' X8 A1 G( i* m9 @6 e$ b8 v4 Y
;;
评价时间/ l6 h. k! P- t$ u* j- P
ask myself [
" m1 s  g: k( B. rupdate-local-reputation; A8 K( O* q+ L& g. |
set trade-record-current lput([local-reputation] of myself) trade-record-current
0 \* g( k1 C  N6 ~% D7 w]
! c! g. X6 H2 Z& Z; v3 uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 T9 G+ P' z5 u; }% J+ C$ I: ^) f;;
将此次交易的记录加入到trade-record-one0 C& G; a) L- p
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 B# |! f3 X# [
let note (item 2 trade-record-current )
2 K1 S' ^; S, f% v! C' b" W/ dset trade-record-current
4 g7 i  Q1 \( J/ N" Y; n) W(replace-item 2 trade-record-current (item 3 trade-record-current))

' s0 q& B) }, a( Pset trade-record-current5 G% W: A( ?4 `
(replace-item 3 trade-record-current note). p: ~7 U1 Q# m  N# \
5 @% O- H# M. g

. Q) @, `+ t/ R4 T( T* r1 Gask customer [
  ~' N( Y+ l# {0 L" G+ }& T1 Xupdate-local-reputation
( K5 ?5 s3 [1 O  D8 `. f9 U4 xset trade-record-current
( N8 ]8 q! h+ J  c(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ B; `* I1 l0 H4 I]: v- A! E. J* Z' a& Q

& S; ^# F2 p4 Z/ s2 c+ S, M
9 D) G4 i9 I! L& M* X4 u' D
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- A2 s  Y+ w6 ]% k) e

9 a6 P" }0 v1 Sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- z. N/ D& u0 k5 M' {- P. B
;;
将此次交易的记录加入到customertrade-record-all
) U0 d' q) ~9 @6 J' ^end& }; e% Z( q2 f9 D: C
. m% N$ n( L7 ]( k; |
to update-local-reputation7 _: g! T* G5 @# k4 I
set [trade-record-one-len] of myself length [trade-record-one] of myself. p; R6 C+ B# {4 ~3 K; d$ k6 \

  d' E' m4 Y  ]9 U+ H& _( P& g2 T2 b! |/ {3 G' h
;;if [trade-record-one-len] of myself > 3

! H' r  s: f- P( y# e# b8 dupdate-neighbor-total! |: Y1 N0 G1 @/ Z2 W3 y+ h
;;
更新邻居节点的数目,在此进行" a* Y2 `8 T% }: B
let i 3  q5 ^0 w8 C' E% r. K( A$ l
let sum-time 0% [0 L4 P. }. z# G9 l
while[i < [trade-record-one-len] of myself]
1 |1 \0 h; C* w, j3 K6 Q1 H- N[
1 w7 g! F. H( s; I  K0 bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% H+ p) ~. [! e+ j  P
set i6 v1 k. @' X8 B" e/ `" \1 `
( i + 1)
# ?) y7 C, o) [, t$ X
]: g6 F: @7 e0 v- Q2 f
let j 3
. e( ?+ ]1 Q5 {; q+ N. llet sum-money 0/ G( K3 {% r# g1 |% _/ @
while[j < [trade-record-one-len] of myself]
2 v/ A7 j% ?5 m[1 m$ T* Q* s# }* S# t3 \8 X& O
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); Y% O. ?7 ^4 l& V* C! U# x
set j7 P# H) E8 [- ^* a! L8 J9 j" J
( j + 1)
- F4 y/ x3 V: T5 z; Q
]
& _# Z4 h! q- Y$ A, b' Qlet k 3
: v8 Q; z4 Q2 Q; _8 \let power 09 @, @7 Y3 E  Y1 @$ i/ l3 L7 I
let local 0
  w, C( |3 W* A* F( `" T7 z0 Qwhile [k <[trade-record-one-len] of myself]
+ H8 v2 A' \: L( n8 M, B/ @5 Z0 m+ @[
0 V* k# a# K7 C6 C! a! Tset 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)
  y! @6 T7 O- |* B; e* F  ^0 Yset k (k + 1)6 C4 ~; ~( R% ]. D
]) i& s6 u7 a; B% d+ T: _) P  c# l
set [local-reputation] of myself (local)+ V6 q! P/ b$ o* z, c$ h9 _
end
: q8 c" O4 J" p% w6 x) E! n3 S0 [/ H! p9 a  V, a
to update-neighbor-total
/ x# z! Q; n% ~% J* E8 \' R. a/ g" l1 ~- Q/ s% X% ?
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ o# |' P& G. N6 k& |' w4 \

, j0 u  a" ]# ?

, s3 k6 r, ^% K% q* Send
; j7 `9 s4 Y2 M; U6 O( G% m* O! t  q. E8 P
to update-credibility-ijl
: ~: h# O$ ^8 |5 H9 R4 Q  }. d. X* W5 @6 h: 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。5 ?) L. v7 s& A" j4 |& R4 R+ G& X2 n9 H
let l 0
% j9 s2 @( k, c/ u: p' [2 Ywhile[ l < people ]
! V7 k3 x: Y8 f( Y& W- |;;
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
* {  a3 F$ g, Q3 N) t* x+ J[% X. \7 D. F: P7 a( `, F6 e& F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)( [" X) K0 K, v) G$ P8 F9 m
if (trade-record-one-j-l-len > 3)* m9 _. ~! D# g5 i3 G' q  \
[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-one4 C* R" |1 e* m
let i 3
, W7 q7 a' ?: D6 l& E8 f( h4 K- blet sum-time 0
: C; k* U, _0 X5 ?6 W' o. h1 uwhile[i < trade-record-one-len]6 v0 g. \: i/ V. I3 Q. Z
[, g/ a$ t# M% E% A# v7 R: J- H; |
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 u/ {4 e, U6 ^3 G8 Fset i- u! u4 V3 E  H
( i + 1)

& @7 E! o' I' m- v, a. H( ]2 Z]" R5 Z3 F6 {  Q, c
let credibility-i-j-l 05 Q: `* b5 k6 Y$ H3 ?) T
;;i
评价(jjl的评价)
$ I( C0 J4 P6 T  tlet j 3+ ~( m& a, N: v) B4 ?  u
let k 49 b+ \; l/ ]7 C7 q; U) ?* G
while[j < trade-record-one-len]
0 m0 U+ e! n0 @1 I[/ u/ S9 P, p* m
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
! \7 `- I* x  A% T2 ~- L) k; lset 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 l; B8 M! Z2 e+ F5 C0 R2 I. c; eset j
/ e. H% w* u. O2 ~$ w  G( j + 1)

) G2 }; |3 o7 m# L5 e]
/ X8 Q1 s" X% q& s& ]) e2 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 ))
6 E; ]# E/ P  M1 J6 X; e1 c2 p3 p8 R; A3 p, G

' _) C0 _% |: w2 s0 w. h6 n& mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 x0 j* x0 H9 Y' `( ]. p" E7 w
;;
及时更新il的评价质量的评价
8 z/ A2 r7 k) }6 E+ jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* _9 I% y% ]' x' l
set l (l + 1)/ c8 T, _6 P# I0 W$ O* u
]* b) r# J3 c$ u# @* Y( l6 I
end
; w$ ~0 D, u) v9 ~+ Y
; N" p4 q3 g. M4 Mto update-credibility-list
) l( m8 j, N3 ~let i 0
; [5 ]: P, G; O+ _* c. Lwhile[i < people]( ^2 m8 e% p$ V3 F0 [" b
[8 s8 Q3 U3 }( r9 I
let j 0! {7 C5 \0 M  N/ K+ C
let note 0# P$ s( e( v' ?9 s
let k 0
0 i: B/ n. n( R9 _' p  |! k+ s;;
计作出过评价的邻居节点的数目
" H, J* u+ |* a/ u9 awhile[j < people]% R, E% S- E+ ]5 ]
[9 |. \4 m4 X0 G5 I
if (item j( [credibility] of turtle (i + 1)) != -1)) |6 E+ f! |5 A
;;
判断是否给本turtle的评价质量做出过评价的节点0 @, q* H; N: A+ A# c
[set note (note + item j ([credibility]of turtle (i + 1)))
1 Y! v+ e+ Q, V( @7 };;*(exp (-(people - 2)))/(people - 2))]
6 J9 m& F& W' q: S0 L: c0 }7 R% ^
set k (k + 1)
8 F. y, ~& ]  F% u( W+ f]- S" ?- f% }1 D) I4 Z. A
set j (j + 1)  e1 [2 [$ X/ m# N( p' v
]
/ y! H0 D) i/ a6 c: K  Rset note (note *(exp (- (1 / k)))/ k)  _3 s& r  g9 k% w- e0 g
set credibility-list (replace-item i credibility-list note)$ s. F6 y/ P' A
set i (i + 1)9 u+ [2 M: Q( t' g# D" V
]* ?4 A$ [$ V# W9 Q
end$ `/ s$ G# B* F" \6 j. {$ }/ ?
# K; n" ?) K. E+ F
to update-global-reputation-list+ B8 S" Q$ ~; Y2 c2 z! h
let j 0
, `- ]4 f! g& z5 pwhile[j < people]& h; N6 q* V! G* P8 K
[
+ H% r  O. O- H4 L8 z! ~: ilet new 0; v+ X0 z+ B2 s3 J8 w
;;
暂存新的一个全局声誉
. L2 t2 n* I& B. S8 f( llet i 0& H6 k/ D" [  Q; U
let sum-money 04 ]: I* V0 w& j9 u! K: a) ]1 P
let credibility-money 0/ v  D# M! a# g
while [i < people]5 v, y4 t0 C6 u4 {8 Z: t, g- E; ^
[8 b" E8 I6 t( J3 u% @
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- q' U" a) o" }5 P2 O7 \
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) D- m4 r7 T7 o) kset i (i + 1)
* r2 v& z  H7 A+ f% L]
0 w- }% I9 j* llet k 0- K9 k% @5 E4 B3 ~% A) [7 U4 P
let new1 0
; k4 U8 M- @3 v3 j" t' z5 S3 ^/ ^while [k < people]
8 E" V- x% E' M4 H[
8 j1 v- w! N  Z9 m- k) kset 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)
& j7 N3 F3 |* }1 j8 J# hset k (k + 1)
+ M% {4 j( @1 P+ _, ^  t]8 |, |) U( k( ^9 `6 p4 X9 r, ]
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 `0 n/ W) \# B; @7 k3 X/ L
set global-reputation-list (replace-item j global-reputation-list new)# ^  L' b* A$ ^/ t1 {; ?
set j (j + 1)
! `" q( y- r) u3 B& b& M7 D) w! A" Q& y]4 f4 b9 V- j: d0 D" Z- z6 H* H
end& i3 w, X1 D& D6 g! R
- R/ N  g' D: h8 b. P; i" x

" I; U) ~; n7 U' R& L1 f4 v$ r6 Q0 D5 D/ ~6 K% S
to get-color: n5 s( n/ _2 c$ x
3 q; p& p, S, e6 O1 f- Q
set color blue

1 d8 u8 T. u5 {" I+ c5 vend
! j. V4 w% ]9 [1 ?
# [% C1 ?* H! Uto poll-class6 A6 @8 F* f; Z1 x! X
end
( V  i, d- ]- b2 h: c- L! G7 L$ A9 B3 K# i4 n" V$ c
to setup-plot18 U. [: k, s1 M5 S4 v

4 |7 W: {$ @  {% O4 B* i2 Vset-current-plot "Trends-of-Local-reputation"
  T5 g! T: O9 f$ f9 d

! c. ^4 k) X7 ~1 {  c/ `1 E/ Yset-plot-x-range 0 xmax

4 b8 t5 ?$ r" v9 x
0 L& Y  ^, J- @& k$ z0 s7 F% wset-plot-y-range 0.0 ymax
1 `6 l/ A$ w. V6 }2 x. V
end
9 x5 ^% t* m1 r: }0 I& F1 x0 p0 ^1 S' d& q* |
to setup-plot2
; {  m/ j8 ]: S: r
4 h* D# R& w7 U1 kset-current-plot "Trends-of-global-reputation"

, w# s+ P( D8 J+ f4 n) G7 w4 ^, e+ q; D1 P5 ?1 k( P% J
set-plot-x-range 0 xmax
* U4 l9 }/ O+ Q' R6 Y- _6 e& ^

# X8 M2 w$ ?8 I9 _* eset-plot-y-range 0.0 ymax

& c. l8 x  o* n0 p; p: Zend  ]5 c1 n$ O. g% Y8 g

+ h; z/ Z- R+ |9 |; K% Y8 Gto setup-plot3- ?4 z) G; h+ ^
# d8 H' N4 X, Y; r* N4 s5 o% r
set-current-plot "Trends-of-credibility"
# B, p' R8 F" m9 H1 k

1 n# F9 Z3 y# T, hset-plot-x-range 0 xmax

7 m3 F4 l7 z* t5 z9 }/ x3 P$ M) R/ h8 W' {5 @, ~
set-plot-y-range 0.0 ymax

* q& k7 N3 Z! i$ h& v5 m6 Pend
( L+ f7 t5 A5 ~1 g, m1 P
. o  S0 a  A9 Q8 w# }. ~& pto do-plots
8 o$ Z7 ^3 c3 _# Oset-current-plot "Trends-of-Local-reputation"
2 Z9 d  ]8 x& B, m! ?% S% Bset-current-plot-pen "Honest service", s5 c' m2 X- a% _
end+ c$ F2 ~! A! O$ o. [( o* I
3 Z9 M) a. g5 H
[ 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# B) M! q( |  v4 D
$ s: P* g: Y* n- N/ l2 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, 2026-6-27 10:33 , Processed in 0.019110 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