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: 16183|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+ l+ A1 [' L5 B8 I  [" A0 I' Y* sto do-business & [4 V, e7 V5 `7 g1 t" B
rt random 360
6 J" k4 I+ V! W8 a fd 1
- t! j9 d9 C( d5 S/ T. l ifelse(other turtles-here != nobody)[
5 V: B# _- c8 n4 M9 W2 K/ J   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.) \( L5 L1 L% t, J; O; }: T/ P% B
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , B+ H  d) ~2 g+ \
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 c/ b9 h6 R& t& N* A; p
   set [trade-record-one-len] of self length [trade-record-one] of self
  Y0 B+ p' n1 a   set trade-record-current( list (timer) (random money-upper-limit))/ d$ Z$ q* M) |' `: E) [! {
. Z7 p$ D, K. E7 F% C
问题的提示如下:
0 Q# [7 o% k4 q* H3 I- K+ d+ {* [# W; ?" J' Y+ n
error while turtle 50 running OF in procedure DO-BUSINESS  u% S; V) J, v+ O' j/ `
  called by procedure GO
! L& R* S2 W3 W% ^; }, J' U3 H- rOF expected input to be a turtle agentset or turtle but got NOBODY instead.: A. H/ |# U, ~$ y' w+ W
(halted running of go)
( a! V7 }3 `$ G3 X  K; \* n& o# D* l  K0 L
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 ~; Y0 d6 T. F. J0 [; F
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
7 t* H' m6 p. F: `9 Q8 l: Sglobals[
+ ?$ G4 V( S5 u, P* ^5 lxmax
) o4 ~# A5 U+ Y* n# Q* kymax3 t9 F3 b/ w/ o
global-reputation-list
0 U! ?0 F: B2 e0 @# i+ |
) F* m3 Q# m; D- b;;
每一个turtle的全局声誉都存在此LIST
. z( L- [8 L; d; s* mcredibility-list
& m6 U# a2 A) L, b0 Q;;
每一个turtle的评价可信度
4 I2 J4 s& ^4 Y3 N1 d  {2 W8 P0 a, V9 Rhonest-service
% K( U( n* X4 Y+ M5 p6 a* U- yunhonest-service
5 Z' A% @! B% O" F  Goscillation
: ?# v9 ^8 o6 p, u# nrand-dynamic4 `& J; H  f. f9 d  d2 K
]5 m# c; U" w/ @+ V$ t# L; B

) p  r  U1 q8 J+ M, x# Sturtles-own[
/ f- D6 _& w1 {6 o+ l5 h( N$ Otrade-record-all
5 ]8 H/ {" Z; [5 _( P6 Z: Y& r9 @;;a list of lists,
trade-record-one组成! X) `. X: }, o2 i
trade-record-one
# Z6 b2 g& f; ?- ~;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, G2 }7 Z% h- x6 [8 v
1 P6 i' Z! `2 \5 B- ?. a$ `5 i6 {;;[
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]]9 {' J$ [6 F, f" a- \* }
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]7 ?* B. q6 q# Z& M9 B
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list$ H9 h. S" V  Y; O
neighbor-total
- B6 ]- m: E+ n1 U;;
记录该turtle的邻居节点的数目; \, d5 P  P9 H4 |  l
trade-time: t' e9 J7 m7 t! H6 y
;;
当前发生交易的turtle的交易时间
2 W9 h3 q+ g! a. f# K- jappraise-give
! c) L5 S, Y8 A( G;;
当前发生交易时给出的评价- K% [0 r* s5 h3 m
appraise-receive2 _4 `; I$ E: \# d
;;
当前发生交易时收到的评价
5 I. Z' L- O: O6 \& c9 u! i/ xappraise-time
) O& x+ O2 R3 n. s( C7 {+ w;;
当前发生交易时的评价时间* o5 X& e/ o6 ~
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% o7 Q0 s2 C( N4 N) Q2 k9 J, x) T
trade-times-total2 u2 v) f1 |4 e2 J& x  Y  Y# N) o; O
;;
与当前turtle的交易总次数
* N4 t- x- y0 G: ptrade-money-total- @) @8 U! x9 V- b2 T
;;
与当前turtle的交易总金额% ?* f. q1 o$ Q" K3 s
local-reputation8 A- R# y. @1 ~: l4 Z
global-reputation
6 }9 R4 w: I8 vcredibility' C6 h9 c5 x% e, l# f, W; W3 \5 v
;;
评价可信度,每次交易后都需要更新
* ?% w9 r0 r& m+ w4 ]5 Scredibility-all" Q- L9 R1 L  D; E/ P
;;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# U* \9 b  A1 \0 H2 k5 u
3 G" L4 O0 j6 V  j" x: }# W
;;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
! m4 l1 U$ C  n1 S$ _: ]credibility-one0 i# o8 m: ?9 E
;;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
! }' A1 V3 W5 iglobal-proportion6 V0 m: Q' X7 J! ~3 w# p
customer! v5 ?, r- G7 T* K
customer-no
+ W  T' q3 H# r5 [! J  ntrust-ok7 n' S7 @9 F' L& H: |. ^
trade-record-one-len;;trade-record-one的长度; [9 h2 H: L, D0 a, q+ Q
]+ v5 I4 w9 F* K1 B, o! E

  s) E5 ^6 A; P. V;;setup procedure
5 E$ M' S: D' r5 ^. n. K! ^% t. S3 `8 C& O
to setup
- z- M0 J& o, G$ p# Z
1 s- x8 s/ t5 `1 t& G9 U) Vca

. E- K9 |0 z& J9 {* v( u6 m' p) s# {4 X7 ~
initialize-settings

5 O2 s, x0 O: W% ~! A8 e9 o( _8 }4 m* {. Y3 a4 @
crt people [setup-turtles]
8 p. S5 X5 ~  w
6 K# P' d& p, G" P$ ]# x
reset-timer
$ j0 P( b, M7 o5 w. {( W# O& b
8 h+ l! E7 R: N5 P7 E1 i$ \
poll-class

9 A5 M0 Z" w$ }; `1 `
. I* k# K' @( Q+ Csetup-plots
7 R/ ^! G4 ~- o/ x% T5 Z

( n( i  T( L0 d2 S* qdo-plots

$ }7 E; U/ G: u& B1 g* V1 ^end
! X" }! {- j7 M- h
  l. z# L# B4 Y6 k4 M* Wto initialize-settings
- F7 l" d. _* A+ {- V& Z+ b( A
- ~% t3 m4 l! ]2 R: O5 a) Y- mset global-reputation-list []
% a3 q% w4 R8 T0 n2 V5 V' k
/ l' A$ x! ?; S7 V7 l
set credibility-list n-values people [0.5]
- v7 D  C, o. g/ A+ W: n6 p- }

% P! f/ b6 X6 bset honest-service 0

" o4 M! \1 R+ f5 {
- y" U$ X* k* Nset unhonest-service 0

0 g  S( r4 x. E7 D4 a& H; ?& F% e5 R( I' e- g) H4 h7 y) T  b
set oscillation 0

0 k. l- R% B1 p2 g. q
* t( Q" m8 L0 T: T( r9 h- H1 bset rand-dynamic 0
8 O' \; M: I* p- c
end
- n* T( L: p& B1 c# }( X2 c, t! Z7 S9 u! W. K# V2 a3 s
to setup-turtles
# w/ \. D7 A+ f: aset shape "person"$ K/ n) N1 @5 L- g9 b) Q
setxy random-xcor random-ycor
8 ~2 F, f3 T# I2 aset trade-record-one []2 d/ T+ s! M" ?3 _
: E, r$ [" X0 {2 |
set trade-record-all n-values people [(list (? + 1) 0 0)] 9 j# }* p% \! |! \
. q5 b: E4 D8 O
set trade-record-current []
" `5 e- o* ^5 m! c% |2 n* ?, _4 rset credibility-receive []5 X, i5 y3 T8 k5 i; t$ N
set local-reputation 0.5" \( x* Y2 k1 {
set neighbor-total 0
: `. d& N4 T* |  k3 qset trade-times-total 0
$ X1 ~, D; a" g$ W. c% zset trade-money-total 0
' y& f7 ?$ Z7 K! ?) f$ y& S& cset customer nobody: G: g+ v2 J$ D1 n
set credibility-all n-values people [creat-credibility]
1 K/ e7 ~5 P' _7 |" G5 V/ ^set credibility n-values people [-1]
' Q- u, I, \) M) o7 `5 ^$ t, }8 \get-color
! Q5 c' Q# @2 m; [: n" e
/ L3 c, d$ p' @
end
" J7 }& G, V) {- x( C+ r' z) K9 \* f! k7 q+ P" _$ {7 o& B
to-report creat-credibility9 J+ s, _4 Q, V4 z1 p
report n-values people [0.5]
7 i! f* g3 C' L3 N) ^/ `2 Gend
& F3 X7 b" O- y; K7 c
; Y! g% H$ ]) _2 S& [* Q1 l! xto setup-plots
* }$ M* u( I' L. a  w, T3 u( D
0 J* a' v! E1 o7 d1 Uset xmax 30

/ c* C# j9 k/ B! u3 o5 T1 O1 q" s2 R
- W7 c7 \0 \& s5 k# jset ymax 1.0
/ n+ o, A5 X" M0 }8 q( h

2 h" g" f3 J" _, `; d1 `7 D' @clear-all-plots
3 m# |% J- t9 x# j* d* s0 q; c5 U

- |  }3 y2 s( N5 {setup-plot1

' F4 t# Y) v( J0 Y! ]+ J+ ~$ |/ K/ p9 F
setup-plot2
: i" {5 S$ i! n! E
5 o' h+ e* M! R- g
setup-plot3
! J* }5 o& \6 j, x9 ~: n
end& {5 e9 [- U: ]

" U( T0 _6 @2 R: [# |% M;;run time procedures
9 H5 V. U% h- V$ L* w9 T: O0 {; {' X2 j  O
to go
, {) r" b; e. |. }2 Z6 ^4 X+ m+ q- L( q1 u: w+ M8 ~5 n3 h: Q- h: I6 s
ask turtles [do-business]

+ x; {) M) B8 a4 p- hend) C! M; }- c! \5 `! z

$ x; o8 b4 [4 w4 w! ]* i2 a8 Ito do-business 1 e$ F: c; j2 s8 n0 k  E9 d$ @8 l0 z9 s
3 u7 C- M2 L4 b9 h) L* n( H0 y1 G

9 W' T1 P- `- o& Q. rrt random 360
# F% u  r# q" P

2 H6 r5 D4 Q  F5 l6 Wfd 1
, F7 ?, G9 h- @6 ?8 v
3 C* _8 O2 z; t5 Y* W1 i3 o# j
ifelse(other turtles-here != nobody)[
7 u0 e/ G, x# c6 i. X& D/ M2 S6 R

9 Q/ p: |- x; R& q/ H( lset customer one-of other turtles-here

9 P9 F9 b. }+ T3 u1 ?$ U3 Q0 v" ~  {& F- i' o
;; set [customer] of customer myself
" `; C. Z% V* L. H) y/ X% c2 @  i  z
4 j& y& }% L0 I
set [trade-record-one] of self item (([who] of customer) - 1)
( [! H4 D: F# c' ~[trade-record-all]of self
* l+ F3 L0 ]2 j! P: c;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) `" n$ c/ ^3 q$ s6 z; b+ X
, {8 ~5 g6 P; b' Fset [trade-record-one] of customer item (([who] of self) - 1)2 w$ Z, ?" s5 U3 _
[trade-record-all]of customer
( G; y0 s' l4 m- ?* L! B" {
, N6 G& [8 Z; e0 d, Q2 P/ x
set [trade-record-one-len] of self length [trade-record-one] of self

: p8 h) c: N! p6 e/ B: l. @: d' N1 J
; _5 l' [4 W0 I6 gset trade-record-current( list (timer) (random money-upper-limit))

3 M: _+ x* H, r* K' ~
4 S; W- q  G$ Z0 [% h# sask self [do-trust]9 H+ {) f6 G" F% `3 c# h) j% M
;;
先求ij的信任度( o2 `$ n$ T* f+ o! y/ G* x) i

  j/ m8 C0 \- P! n* sif ([trust-ok] of self)6 B0 V0 j  I. h  H* [
;;
根据ij的信任度来决定是否与j进行交易[
* \% ]. D3 Z  T! Y! ~ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 O4 m2 q+ R: b$ [' @' e$ k4 B2 V" A7 w" @8 m6 L
[
9 ~. M4 u) H: d4 f: n4 y
  L' k7 g; k8 r( z
do-trade

$ c  x1 I' C  e$ ?- V
# T" w& X+ k5 x* L, Z& K9 hupdate-credibility-ijl

7 C7 s: n9 X2 }' {& {( ^: {/ `: p9 c: o) U6 i
update-credibility-list, X3 X! V4 @% `) L
1 ?# r6 j5 h. R1 _" a4 o4 N$ f
* C. w1 P) W" x. w* D6 d) w
update-global-reputation-list
3 p  W* o- N% X/ v; i

# r* _& N; ?/ s$ _0 }poll-class
/ I6 Z* l% H, ~5 O2 y, s" ?
7 o0 Q4 L0 @8 C. Z% Z! e% @
get-color

4 r/ r) A" W! H
- ?. k5 f% _; F]]+ x- C3 v3 k3 c
5 \( a6 v, a+ S( M
;;
如果所得的信任度满足条件,则进行交易. B: ^. G' K8 V1 P; t& c0 c7 T

- Q  o/ S8 I- }4 |" |[
: ]. g" o: k: k; L  p7 Z( f

$ K3 a7 {8 e) S* M' nrt random 360
" p1 D( N6 x6 h( p9 e% E1 t: V

5 I( e  P% H1 ^. C" m/ S. @fd 1

- \0 b- V$ C; j1 f( _' G( Y! z8 d  a) r3 R0 N9 r) F6 X
]
5 v: d8 j$ @$ R9 F& F, ?
9 B' R4 p& O6 R/ D8 ^
end

& b. R1 s2 N9 i+ C9 C! D6 p+ O7 r7 r; Z, I; W' V
to do-trust % G" D) s2 @( R0 O6 u
set trust-ok False
" v% }5 z$ Q/ z* l, }: p, b) a7 L5 i8 Q' ?  m/ \

/ A. ?. o( D3 N' L  K5 ~let max-trade-times 0
' e& l; C- _' d" l- nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 k5 b. i3 c! _7 R
let max-trade-money 0
+ a# O! X2 e% S. H. E* Wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 X) U: C2 w$ blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: W* z: m( z$ Z. j' r9 f
5 K% e; ]# R2 |4 H. g+ v* ^
7 P% C. Q2 p9 x+ M/ ~( o" \
get-global-proportion* b$ D. X% r9 e
let trust-value7 y- }7 m7 m4 E* j! K, W
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)
! h0 |8 S6 L. A7 C8 z
if(trust-value > trade-trust-value)
% J- e. u$ ]4 J# {, s3 F[set trust-ok true]
' B" M. ]0 ~# h& `4 z( H9 Xend
9 o7 x7 P+ n" E0 r$ @" _% a2 ~, P2 L$ c
to get-global-proportion
9 Y; f( l' G1 H2 F5 S- }: t: lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 x7 i+ v4 ^) R5 R5 e# ?3 |* ^[set global-proportion 0]
5 E6 c$ O  w: P, v1 E0 K9 y# [[let i 0
& t# k( g1 R" o3 L5 P: h+ ?/ I5 vlet sum-money 00 Y1 a9 g. l" P3 u6 F$ |
while[ i < people]
$ F; f! A" q1 Y[
+ A8 c0 u% ?, `" G, Q, j* Mif( length (item i7 P1 j% ^- t9 Y
[trade-record-all] of customer) > 3 )

' @% K; }1 z8 _& j' ?, j[* o6 S" o: i; V5 m: m
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))1 |, N( B+ \, j7 r
]$ M( z9 V, I! P. U! ^; A: d7 ~2 e
]
; N2 b; w' g8 E7 g/ N. blet j 02 R( W7 D4 [5 e/ q6 }8 a' h% Z1 T
let note 0
# h% ]8 n1 \9 V! u. }while[ j < people]8 c% Q5 s, O4 r! D* w$ W
[" ~0 S' q; U, i& |
if( length (item i
6 g7 O. a: U& G# l6 d& |7 F' g[trade-record-all] of customer) > 3 )
1 |6 @) g" ]1 o, W" Y5 y' @' U0 P; d- l
[
# R0 `0 y. J9 P7 L- x, X) Bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 ~( h3 H0 c8 o# o[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 a* C5 t0 u- E. r$ m: T
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ i, S& J5 k6 {" [4 A
]
: M4 T  y( N# R$ _4 _]
" A2 K5 R( M9 |set global-proportion note8 S8 |* ~8 C( W
]
& S# H" u! I& e6 |. ~8 i* p: Oend
9 r" Y, b7 G8 s' C8 r2 u
! N/ [" A8 a9 }4 o9 H9 Q! Y8 sto do-trade9 Y2 B- b' B1 u+ h( ~. o9 P. n
;;
这个过程实际上是给双方作出评价的过程
) r  [% H2 N; M6 E) m  Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 @! `/ x6 [2 b$ x% x$ ^7 C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  B1 o0 z. B0 ^8 N* j* G8 r
set trade-record-current lput(timer) trade-record-current. F( Y2 F3 g0 q$ W9 E3 e
;;
评价时间
# A9 @! f! P1 B3 i+ {3 G" K$ A' z1 d, I! |ask myself [! d0 P- T/ k5 m* S- m7 i% C4 `4 m8 w0 l
update-local-reputation2 _; D( h; E3 Z" g0 \
set trade-record-current lput([local-reputation] of myself) trade-record-current
! _1 W  U* V$ R7 {. e* []+ g$ W$ X$ `) T) b( _6 C4 B4 {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 d  a1 \% D3 S7 G# d0 H9 ^
;;
将此次交易的记录加入到trade-record-one, Z' C# v6 J/ R# ^
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 y1 H2 z2 T  r  c
let note (item 2 trade-record-current )
" S( s, z5 u5 e& {% E4 Sset trade-record-current* Q  l  t; K: ~
(replace-item 2 trade-record-current (item 3 trade-record-current))

8 g; ^( L0 a1 X2 p  T* v$ Z; q) qset trade-record-current
4 U3 Y6 X8 D  U1 H(replace-item 3 trade-record-current note)6 b5 Y/ x8 S; ^

+ x. i7 a& x2 ~1 E
1 S% @: y, d0 D) I/ n% c  X
ask customer [; Z6 ^5 l( N4 V
update-local-reputation
1 h& S6 z& n$ r6 k" D) T; |set trade-record-current
/ L; N, N0 B8 }4 y2 F( q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& u6 `# O' d3 ?+ S' G/ L! Y
]
1 u) ~* P: H* P% c7 @2 B  v, l. T
9 k4 L1 B. A3 J% }$ c7 A

& ^8 [# @( M' [/ N+ jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% J5 d& L/ O8 `
- c5 T0 j$ v7 e; M! W
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 m; ?& M4 ]0 t0 j3 u;;
将此次交易的记录加入到customertrade-record-all' T1 J7 o5 C4 g: t/ [* G* y
end
$ j( B' K8 |7 V+ l! g2 w9 I: N* E4 g; Q' U3 y
to update-local-reputation, X- K0 Z6 P  {2 Y6 j( D
set [trade-record-one-len] of myself length [trade-record-one] of myself8 P, l3 }, P; ?/ o& Z$ p/ u
  t6 m, W3 j9 d% G8 u
' l, t5 A* N" c4 r5 z% G
;;if [trade-record-one-len] of myself > 3

& B. r! r5 d5 _! Lupdate-neighbor-total
0 n: q6 g) j9 k" p) x9 z;;
更新邻居节点的数目,在此进行+ z% Z4 h0 x$ O2 O2 T7 o
let i 3
% s( h- }. C8 e* F" Llet sum-time 0
/ _0 W* ?9 P, V( o/ ^while[i < [trade-record-one-len] of myself]+ O/ N" K: B% j
[
( F, k% P$ \4 x3 {: W9 Nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): |! V# a7 R0 Z1 e- w7 ^8 e' E
set i8 ^, q, ?. N9 k: G+ e
( i + 1)

6 L4 _0 k, {  ~7 _6 |! y3 K]
0 s( I2 z' x- D7 ^let j 3- N+ |" D- \/ [% {. s
let sum-money 0! Z) E7 D* `  z! C
while[j < [trade-record-one-len] of myself]
& [( M4 X0 @/ Q[0 s  d, D9 v, R' E1 D4 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)! j+ `  O. x- P2 z) q; c8 |& C
set j
5 G$ h' V1 B" Q( j + 1)
# K6 G& S; b: N9 [
]
6 y. t: q; Y$ nlet k 31 r4 a- E/ c) w
let power 0. w3 O6 j% I7 h/ ]
let local 0
7 J6 w0 o  u; J# C$ {+ Uwhile [k <[trade-record-one-len] of myself]3 \% M+ m5 g5 G- I2 x- S
[1 a7 S" V/ {( f" e
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) 3 U8 L) ?4 \4 {3 W, d) R# h( y: U
set k (k + 1); @/ n% t; r: {. v. d. r
]
$ V6 P1 \0 T' p5 r. W4 e, dset [local-reputation] of myself (local)
) K; D0 W; P$ g& yend
" J% D  f7 w; X: b0 R- Q# K+ W3 m" B  `# i
to update-neighbor-total% N* q4 o, h5 _5 j$ U$ k

8 W) ?% F0 |* {* bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 x6 i/ ?" \( j; p% z# H: Z8 A1 W
2 \9 x* \. J' b
3 B% i5 }. n  L9 w. ]
end/ u/ w0 ^1 S& a  r: s

& ?9 E+ G5 T0 K* F, l& B/ gto update-credibility-ijl
& C1 _5 s2 q8 K
: I8 c* {- v) i& v! w- t2 Z;;
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。3 @& ^2 ?* j0 H7 @1 v. Y1 X( k3 _
let l 0
  y, C5 G- w2 h0 R" I/ v0 _4 i9 `while[ l < people ]- S- {3 e8 n2 k0 L6 J0 h; k& R6 B* l
;;
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
& C" G$ [2 n3 h; y& ]- f[
) [$ B. r: X7 a/ N, i! q" b# Ulet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 T, g1 t; A( e$ b; n0 oif (trade-record-one-j-l-len > 3)
/ @4 L9 Q! t7 d[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
6 T. F+ b* O' W& J; C' ilet i 3: a, ^6 @! h% q; G
let sum-time 0
6 u8 |1 u' Y% K0 ~* L0 u; Dwhile[i < trade-record-one-len]
' b4 L# h; A% p8 w3 F. s7 u7 d. q[! v" T6 u+ F* [0 g2 v! l, r6 }
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 D7 |1 n- g8 L# [; S$ Q6 k- C
set i
/ s/ j& n6 N8 q! n/ G( i + 1)

; f8 I* j0 r( I]/ Y9 C, q: x& w2 z
let credibility-i-j-l 0
% Q3 h# s: }0 B; K;;i
评价(jjl的评价)
* q8 A6 I- v5 q8 clet j 3
6 B9 Z: N1 M5 ]; e% glet k 41 \  C- P6 v& p; f8 u; L7 b0 e. {
while[j < trade-record-one-len]+ C" D, }: q6 Q% B" J/ K& ?+ _
[7 J: T7 I- s! u3 T( Q" ?3 F6 M- j
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
, K8 `+ n% ~9 F9 W- pset 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)
9 C) M0 c4 F( Y; P* m9 U9 cset j
+ r) s( o9 b, ~( j + 1)

/ A* B1 w$ B5 z$ A2 k% c# M3 e]
: v9 I. s/ O0 T! p9 a& sset [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 )). j4 L* z4 U' E0 S4 t
, h: ?% z! i0 O6 U9 |- ?1 @& U

0 X; x" T4 \2 q7 @% B; ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 n: u; T" i! ?( S+ T7 V;;
及时更新il的评价质量的评价1 k0 I$ e; _, J% O$ o" e1 i: C' e
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ], m! ]* d, y, Z, B9 K" g
set l (l + 1)# a1 s; F5 S/ ^/ L2 R7 |3 q
]8 C$ x* A/ {. P2 z
end( T7 R6 H( z$ C/ U
0 Q) U6 f, B8 |5 n. ]7 Y
to update-credibility-list
. m/ r6 c0 x" l( z) plet i 0
  Z; `1 K7 `: O4 fwhile[i < people]0 J7 r  V$ I* I/ R, L4 ^2 i: z3 k
[  G3 v" Z$ s) Y
let j 0
% f9 s. Q3 _! F1 plet note 0
4 N( r( y$ _7 T" Q* a/ |& Elet k 0
' A/ x9 a+ ^0 Z% @; t6 K( x- y% e;;
计作出过评价的邻居节点的数目0 \) ^% r4 l% w/ i; N9 {$ Y
while[j < people]
8 [& u- x, [, U[
8 W1 T, |7 k* Z* }1 aif (item j( [credibility] of turtle (i + 1)) != -1)1 v6 O) J7 J1 f4 k/ l
;;
判断是否给本turtle的评价质量做出过评价的节点& b; F$ n/ ]. F/ t( p) l+ L  x
[set note (note + item j ([credibility]of turtle (i + 1)))
1 D; R" L2 ]' g* G5 K6 B4 _. w$ g;;*(exp (-(people - 2)))/(people - 2))]
( `* v3 v/ p+ s. m/ c. k
set k (k + 1); F# W" G8 w: ?7 j
]1 V" E$ v* P' J8 k6 \6 _
set j (j + 1)$ F! z/ _: H# ~# t  R# C! B
]1 E; @7 Q- H/ n1 `5 {
set note (note *(exp (- (1 / k)))/ k)( S, {+ a6 q, ?/ J) \; l; n
set credibility-list (replace-item i credibility-list note)
4 V6 L2 E! K0 N# Zset i (i + 1)
. ^% v+ ~& Y: p- C2 @]
; m5 I# c7 A4 B% w1 Y; `- uend
( d0 E" D7 e$ d0 `7 J+ \+ {8 ]! x8 E+ z
to update-global-reputation-list
: h( C' Y) {+ N& a7 O2 Tlet j 06 s" k! I/ s/ d0 I- {7 f& e
while[j < people]
$ D6 e0 r) W+ P+ E4 R5 k9 G[
/ Q. s5 g' D  P) Zlet new 0) e' ^( z. O& I1 Z, |; y
;;
暂存新的一个全局声誉
7 v3 _' a! ^' X4 T  M, x$ Mlet i 0! X/ T8 V6 Y' Y3 \4 m  _5 t
let sum-money 0
- Q7 |* M" ]1 Q- g; {+ i* vlet credibility-money 03 @( r2 B- V: V+ z. j* d( F' |
while [i < people]
# `' @- C7 B. h# Q3 n7 ][
# e7 y) M* z3 ]# jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ H, b& {5 b% ?* Z
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# b5 S0 Y- A8 J6 E# dset i (i + 1)
" w" S/ S5 [. j* z. V]
( Q: P" A& y; wlet k 0% G- w& w. m) H
let new1 0
# M6 d4 e) b$ fwhile [k < people]
! y! o: t) m( z& j$ Y[
; F! Q( N) L) `) v+ E: pset 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)7 s% M% h9 u4 C1 w5 A" O4 M
set k (k + 1); t; U2 n8 a" _# W, p
]
- f* @& L- p: X' ?' F% \9 hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' c/ v; K' }! t/ V  h: Tset global-reputation-list (replace-item j global-reputation-list new)- u3 L8 w9 `: L, o* z5 z
set j (j + 1). d  M* W9 E# x# C) T  r# c
]6 h6 h$ G2 s; x6 k; r2 x7 E
end6 C) E! N* g2 n
& M4 m6 n( \. s1 X: B4 j

) U" n( W0 C, H5 v) X) T; x, s' m, x  W$ T0 T' L1 {
to get-color- M; f" p! n; b' a3 K! J
6 C% Q" j6 q2 Y! Y) q! c
set color blue
& O# ~# t0 f$ K) B/ ]5 k
end
4 W, L8 I0 L* N* H) o7 |, L+ V! [1 q
to poll-class
/ A- U$ t% \1 q+ q. mend
2 J/ S0 u; l' m% |1 ~- Y3 V4 `2 s, Z+ `3 g+ d: x
to setup-plot1( {# S2 M* m+ J3 y" ]5 q7 Y$ R

8 d  [; j3 q% Q8 ^. Xset-current-plot "Trends-of-Local-reputation"

4 g$ p7 z8 o  ?1 H( o. x/ J* D5 `, r& z) [
set-plot-x-range 0 xmax

; f& c6 a. q0 J, E8 S5 W4 i5 c2 n4 J2 z
set-plot-y-range 0.0 ymax
8 k2 a  B8 k+ \2 w( }' f( [3 i. j
end! m! `6 y7 a; ?1 O; d

8 O; d/ y  m5 tto setup-plot2
3 J0 q# E4 e- i3 ?8 Y/ C9 r1 g; w! M7 s. `
set-current-plot "Trends-of-global-reputation"

  r# l- r% q1 r8 ^6 s- K6 ~# x5 ~6 `0 {( t1 M) p5 J$ M8 I
set-plot-x-range 0 xmax

4 o8 i8 g# {: F7 ~8 t. {* b4 S/ [* D' ?) ~
set-plot-y-range 0.0 ymax

3 ?7 F( A, F6 ^; a( Zend
; F7 `& K% i6 a# J4 ^+ Q- |/ n" @
# q% F: t7 i: Y* `to setup-plot3
. W7 h; f6 W1 @2 j  L9 f6 n! d; L0 R# Y. W
set-current-plot "Trends-of-credibility"

; Q9 T9 e. ~% ^  @) Q. j' [, c  B  d! _. y% h1 R) Z1 p
set-plot-x-range 0 xmax

3 I2 Z, K- P# r/ D0 Z8 _3 n$ D" [& J3 }1 e& y: n4 m* S
set-plot-y-range 0.0 ymax

$ H4 r# {/ o# P/ F7 H3 M" ]end
0 o1 e! e' `/ P8 h. d/ X: r. _& T
to do-plots# }7 K1 P, }8 z+ s
set-current-plot "Trends-of-Local-reputation"
3 g+ B) \4 N4 D+ ~* cset-current-plot-pen "Honest service"
3 I8 I6 U/ H+ u/ W/ T2 \& fend
* m1 h7 j8 d+ g4 T/ H* e0 p1 w9 s; m8 k# L( k+ i
[ 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.
! j5 E6 j' `  F/ p( W9 t
- C& u' T9 a' j8 n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, 2026-7-8 03:22 , Processed in 0.019325 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