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[交流] 关于turtle的使用问题

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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 X; l- ]. X( o& ^( r2 _
to do-business 5 A' K: P3 c; X- c- u0 W
rt random 360( Q' M' Z% H. N
fd 1
; @9 T4 z# l/ y& j ifelse(other turtles-here != nobody)[
* P. q( ]! D8 C9 Z+ M* W4 x9 h0 \   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.. f3 @2 {, f. d8 z& k
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& X8 ~& l5 e- Z6 y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 P7 U  p, V4 x( r
   set [trade-record-one-len] of self length [trade-record-one] of self
2 [8 ^9 m! k) Y$ _4 }. g, ?9 n   set trade-record-current( list (timer) (random money-upper-limit)): j& z0 [$ z9 L) N2 t8 K
. k# ?3 C5 u8 c4 [
问题的提示如下:! v% k5 e( x" S! X

9 y- b. S# r/ e! H- G' v7 [6 |error while turtle 50 running OF in procedure DO-BUSINESS
9 M3 n1 s6 f- [- t9 i! ]3 i$ Y  called by procedure GO# t4 [, a4 ~* M. }+ N  V) q/ U
OF expected input to be a turtle agentset or turtle but got NOBODY instead.9 b7 n! n4 W/ D& I1 Z
(halted running of go)
$ X# g" {. b( ^2 ?6 u4 S% |$ k+ A  }" `. t9 q1 C6 u( E$ W
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~~  k3 i3 z  l' y# y7 P0 D
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.

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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( B" Z7 Oglobals[- _( D0 P' @. R+ h) ]
xmax
# }/ H3 M1 x. F( }0 I# \9 [ymax
( ~% H$ m! W. ^' B0 w- d# Gglobal-reputation-list( l* p: i' {  e

( p" p) k% ~! x0 P! T  g; Q' l1 d;;
每一个turtle的全局声誉都存在此LIST7 _: j+ g$ p5 d0 C1 U' H
credibility-list
  }% H0 P' \4 R$ }$ r; p1 x;;
每一个turtle的评价可信度6 J; N8 v7 r) S/ i+ @+ Q; M
honest-service
$ p% @% u! ~$ D5 i% J4 i( qunhonest-service$ P7 ]$ I2 a0 }! j# D! W
oscillation
* Y. X5 C# ?" [" d* qrand-dynamic' l4 B! o  x; e! L5 p
]
9 F7 r# [% ~/ R1 f4 B. x: u) }+ c" t" k0 w& {
turtles-own[
! A; i: x7 S1 L$ v0 G0 N# a+ B6 itrade-record-all
7 J; d; f3 X, Q0 k. R+ t# o;;a list of lists,
trade-record-one组成+ K  S3 j: ?$ y$ H3 F0 L
trade-record-one( \% V  C' d  H) ^6 D+ @
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( P" c1 D4 r5 y$ D& m2 D
7 y- t; f; A  B7 K/ a8 W* f1 J  @  K
;;[
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 m( i1 W. L7 j& q7 ltrade-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]
' S0 v* y% J. {  ucredibility-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list3 u, Q8 ?( I0 C  {7 e. j! v
neighbor-total
6 N% n( k6 B) J! }. ~1 a;;
记录该turtle的邻居节点的数目
, q: ~2 D" b. _+ S/ [trade-time
4 {/ Q. H) @( s! G;;
当前发生交易的turtle的交易时间' Y" B) [- Z0 F
appraise-give
& i$ y: K( O& H' n/ X9 t;;
当前发生交易时给出的评价
; q6 x' L  f8 l! mappraise-receive
& F% Q/ d' w1 `: o' J& X;;
当前发生交易时收到的评价
2 v" Z9 J* F8 t- Nappraise-time: X$ I" S" n( G8 ~- H4 Y
;;
当前发生交易时的评价时间
$ N6 Z% M3 x9 o" Vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 Y7 q8 n$ }# V- j; G" p; N& Q/ Rtrade-times-total( Q% S* ~+ Q7 `; N( s! }
;;
与当前turtle的交易总次数" a  m6 W8 G/ i, ?$ f% S, {
trade-money-total
3 w9 L& F/ g) I1 h0 v;;
与当前turtle的交易总金额
2 F3 }) C% i$ i: \7 zlocal-reputation
% j/ j4 Z& X' hglobal-reputation5 B) l- f. p/ m
credibility
; }4 @( I- Q$ H( ?;;
评价可信度,每次交易后都需要更新
% o) c& q# v. y/ h- dcredibility-all
3 f9 S2 y* h( K, U" @0 l;;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
" j. k; l3 `" J4 V4 T
0 O2 u3 P3 P, V3 c# Z;;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* D3 K6 I) p# w7 z) v# @$ U  K1 j
credibility-one; H! ]; Y: s0 S" w( s0 Z8 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
+ X  l! ]  t( ^9 D# E0 k* H( s3 xglobal-proportion& F3 ~" Q6 n/ g" w
customer
: q4 f& y7 i5 w$ ecustomer-no, a' ]* l1 ^; A; p7 n
trust-ok
7 c2 F! Z1 S" w9 R7 i% P0 a8 B1 R4 ^trade-record-one-len;;trade-record-one的长度
4 E' L# v- O6 Q: i]: ]! r% w& x3 N* }! M
! X9 E; v+ T6 u1 O- V
;;setup procedure
: ], x% X4 \5 ^* Z. S/ l1 l
3 B4 G3 @8 G3 b6 o$ a, z( `to setup
5 x( [/ I0 l3 Y4 O* b# x& r3 ^
% I0 E0 V7 D/ k7 O, aca
. l% z/ @, @% Q! _& p; c
. Q5 F1 `4 L% E
initialize-settings

# W% S- {& o# m9 t' I6 V% N- g) k  b$ a# w2 K
crt people [setup-turtles]

5 f, G9 C- Y" ~, A
! o! w6 U/ h/ Zreset-timer
! S, u+ c9 G) o
. A' c( B) d- U* ~: c
poll-class

5 o6 ~& ?( J3 t1 I9 |" }7 Z, }5 c1 h5 v  j5 K3 d) ]. R: j) P4 z
setup-plots

/ Z( ^& T4 q' e: J1 D# L. i/ t$ j% E- g
do-plots

4 B9 W+ ~! p2 @$ I7 ~6 d) l$ @end. [# L* u3 U3 S/ S" }. N1 |
& {7 @. n4 w$ p  D
to initialize-settings
0 T8 O, {/ W7 j8 K7 |
' V7 n* l" r, p$ I( G7 sset global-reputation-list []
- A+ E; q8 _, w$ o

6 O& @+ P' u8 ^' V( eset credibility-list n-values people [0.5]

  r, L( }9 I- C' B/ @5 ], i. |# e4 K3 a+ D2 X$ o# m
set honest-service 0

& |! b0 h% E% J2 z; g! ]: e2 ~* I$ [. T1 w! X" Z  v
set unhonest-service 0

( n. b+ l3 e& d$ n: F
8 @0 c1 Z" B4 y4 `  s9 rset oscillation 0

. ?5 h+ V0 c" K1 ^% \* \! I# Y# m, |4 m/ O
set rand-dynamic 0
: I* j8 g, \3 M# f/ o
end
! N0 K, R# X+ @: u% ]5 o: t3 A. @
to setup-turtles
( x" M: T6 }9 r3 c9 ^set shape "person"
0 l& b6 i, o$ R( f) @- E; ysetxy random-xcor random-ycor
8 N$ ]! y4 |0 wset trade-record-one []
' a8 w% Y, Q7 G4 K, L
( @5 K0 ]# w6 T* _, B1 [7 ?4 j
set trade-record-all n-values people [(list (? + 1) 0 0)]
* n" K) h$ `. v

1 p4 ?0 A- y8 Dset trade-record-current []0 {4 S) t! R7 |  z" R- F( ?( ^4 z6 Z# A7 j
set credibility-receive []. X3 f2 F; P) ?* u
set local-reputation 0.5
* ?4 x- I4 a3 D. bset neighbor-total 0, `: k, S3 }% J1 e6 s' N9 a
set trade-times-total 0( W. h$ d0 e, w1 J# K
set trade-money-total 0
! J- e  g, ]& @7 Eset customer nobody
5 G" I. b$ N5 t1 w; jset credibility-all n-values people [creat-credibility]
7 ?% x0 L, `4 J5 e* n8 uset credibility n-values people [-1]
1 E7 f% v0 D, G0 w4 X6 ]) mget-color
9 N! s  O! k# z6 m( u* s% I; i

; V- f3 b# a+ c7 Y" |, tend
; b% F7 p" F, b' h$ X" b) u% M. g+ a& l& e2 R0 q& s( O+ Y; i
to-report creat-credibility
: V, \0 w7 {, V4 z- H- G4 H7 X4 yreport n-values people [0.5]' X' _: U9 Z. K0 A
end3 f( p! w' t4 s+ B  S. W9 I
! |, r4 c4 H* ^
to setup-plots
! Y. |2 a% H. V4 ^
& M+ K6 f* ], I2 dset xmax 30

( [' X! W4 z- K+ v4 ?5 g0 c7 b4 N
5 j/ ]1 ^7 w# c9 ?. `: |set ymax 1.0

! s6 z- Y& k( M8 d# ^" A+ V. E, ^
clear-all-plots

1 R8 S7 j4 j: N* w
. K4 I( w: d6 X+ M3 }% ]setup-plot1

% q& F* ^: Q% G% O7 W
# e6 W. }4 P8 B" B: H, ~' _' R# qsetup-plot2
/ ^  F# c; k( F0 ~$ x/ \& S8 @
" E0 a! f  N7 S: o" q
setup-plot3

* ?* T4 `, U. t/ @$ e" Pend" i5 u* n& f6 i

) j/ x% A5 _$ J& M$ U1 {0 v/ n5 f;;run time procedures
! ]5 N# ^# G; V5 T  M9 W3 `3 C4 O* L
! e9 a* o8 f" R6 Cto go: g8 H- @% A) e

8 F8 r: E# F) j  Cask turtles [do-business]
+ W% j1 ~% |  n2 x
end
" W, ?2 g1 o- L6 F
' {) M; i9 M4 C7 vto do-business
1 W- Z+ ^% Y+ i5 w+ |

2 g  T% V/ ~2 ?, x2 E* O& l, [
1 O7 Y" Y# G- X$ nrt random 360
& v' y/ u7 G6 ]3 o
8 B7 u. `! n0 ^
fd 1
, c  m9 I' n+ R8 A+ o& e

" y6 b' s+ c* O; u4 K% p( Bifelse(other turtles-here != nobody)[

. j9 a8 g" c& t/ w8 P) }% y! p7 A/ l6 {0 {$ T9 x( M9 {
set customer one-of other turtles-here

; N  R, _: l+ T. ]3 T5 b2 E, u# {* {
! T3 K; A: C$ J( V;; set [customer] of customer myself
0 E& o( Z$ V  c- \' ]. j

% F- `; c( ?* R" c" b6 D2 Uset [trade-record-one] of self item (([who] of customer) - 1)
  @5 U9 a2 ^$ a% t3 g- }[trade-record-all]of self, j; j$ O  i5 _. q6 V
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* ]  @( w9 A; |$ G/ d6 s$ F$ c" y9 D8 e4 ]0 V- Q
set [trade-record-one] of customer item (([who] of self) - 1)
! F7 f2 {* o  `) T. x[trade-record-all]of customer
: Z, T2 f, D1 _6 N/ z$ C
9 Q2 j, c/ K% B
set [trade-record-one-len] of self length [trade-record-one] of self

* k- @: A( }/ p9 g. {+ V* a
, X! Q: j1 S7 Hset trade-record-current( list (timer) (random money-upper-limit))
, v9 s8 `. @& B. A- [# x6 c

" S) \! a# H+ o5 Fask self [do-trust]
% s" u! L, c$ `! I. T. B;;
先求ij的信任度
! `5 R4 e2 m& G* f; @1 m
) ?  g. b' e) z) kif ([trust-ok] of self)3 u* \  O2 t* p* w7 E
;;
根据ij的信任度来决定是否与j进行交易[
0 @: _" H# V  ~+ y2 O# g" g* fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' B! U+ z. Z- A' w$ b! d- b0 `/ C3 g5 g6 P% {% f
[

$ P# A/ @2 X! t" ~
: w; S% O# r8 p" s$ M* ?do-trade
* W& p& Q5 C8 ?
- {( N: p  o& N0 W
update-credibility-ijl

2 V: U/ m/ S% U9 ?# M9 O) {
) |& y2 T- d3 k2 M1 |3 aupdate-credibility-list
& f9 v/ P9 {6 z+ B8 g

) {5 h% p1 H6 W" U& e& y- Y' ]! N; m* [* {
update-global-reputation-list
* ]8 I8 P6 x- N8 M' U" n

5 P& ~- B: k0 T2 Q1 lpoll-class

& B) ]: Y* S4 ^; }
; |- Z7 D( T1 [0 u' z. t' hget-color
* l2 l2 R: v, X

4 m2 e5 }: o$ x. I( b3 G# x. y]]
; o8 T( o& x7 e7 P/ N! ~
, H4 V$ z' x1 J& }; u1 g;;
如果所得的信任度满足条件,则进行交易
# T& E" I7 l  n8 g! D0 `  y0 Q7 E! e' Q0 b( M, q3 H8 \
[
6 s6 c! p- l# n$ E* _
* z; V% r) I5 B5 }+ r
rt random 360
' t3 l, S1 Y  \% O! e
# `! ]/ D% f. t( x0 R, B  K
fd 1

* p: y! J0 ]% E9 [- y, Q8 c* p5 M9 F# \
]
# |* U/ A1 ]$ }  C/ T

* D6 O; y  X7 o: ]8 q) _, }end
7 G- K. c/ \5 c0 g9 v
7 e7 I% {2 l9 f( h. a9 Q' D, S
to do-trust 1 B/ \, }& d8 h7 Z" Z" |. p
set trust-ok False
) Q+ g. {: h( Q( r* g: K: {) v2 k, E$ [+ H
6 p8 M9 Y+ I4 [$ y6 A
let max-trade-times 04 n3 z8 v/ w/ K  \& I( h
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- O' J$ o$ w7 y
let max-trade-money 0
- |- @- `1 I+ L% `, Zforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  M6 B* {/ S2 O  V- g9 j4 n2 p
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 O: q8 u2 P9 x. E* A  F
9 C, s' q4 L& A9 y/ W

  j( k3 O7 X8 F' Uget-global-proportion
6 ~. I! N2 P/ |- T5 Blet trust-value
6 u. g. t. }8 a" h" I$ q  plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
; @# E5 {+ U3 _2 ~2 l
if(trust-value > trade-trust-value)
" S) P1 B7 s- i  A, ~[set trust-ok true]
  J& L, k% ^1 b* z6 Send
% _% Q7 z. ]/ D; d! R% A
3 H1 N: |$ {- ?8 \to get-global-proportion
# k7 |8 \% K' w, \ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% U# t) Z% l4 @3 `- l[set global-proportion 0]
, V4 _' {% K+ ^; Z0 z[let i 00 E( w' \: @7 P+ _
let sum-money 0! k& Q" {( H5 B( x5 c
while[ i < people]2 Y2 P. X! `- S$ ^. l& \$ u
[
* y' Y8 P6 E$ [8 P( _if( length (item i
1 [* L: a4 E% p/ r+ L3 s  w[trade-record-all] of customer) > 3 )
  u( Q3 o0 K! B2 s
[; K2 }1 j  ^+ X: H/ M
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 J& K4 w5 s# {: Y% Z# X]" H6 }& b8 [8 Z( L0 s$ g8 |$ R
]" i1 e" M1 Z7 }  c+ c
let j 02 N0 U+ i+ i; e4 O/ Z% v  F8 ?
let note 01 G+ W, ?3 q/ w" ~6 G/ z# Z. {* m3 ^
while[ j < people]4 t! Q' @% K' M1 v) H2 a! i
[& Z; V, _4 q7 y$ l/ v1 N
if( length (item i, R- ~  o# y1 n  o! w
[trade-record-all] of customer) > 3 )
0 y! r7 b. G: ?2 H/ n  `9 [2 M3 D
[( T7 A; H1 F8 Z: ~/ L. Q9 C
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): z: {/ K9 d2 F& E
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 C! A- q9 X2 `) q# B
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ z4 L7 n( I" V; l
]: E9 ]0 l4 D& V$ a
]: l% M4 B; H! z4 t% @  L* }1 h3 y
set global-proportion note5 k$ Y& {/ Z2 w# i/ y
]( i# z0 d" [, i4 V! p
end/ v+ H! Q5 Y$ W2 K9 G: `- o
2 C3 h9 X' v! M
to do-trade
& ]+ i5 `1 `* a;;
这个过程实际上是给双方作出评价的过程
2 O* P* w: L8 f. V4 gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" [! Y; V9 N2 ?- v- T4 Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  ?" j5 D2 T+ J- i0 j6 t% g
set trade-record-current lput(timer) trade-record-current/ G0 Q0 J) j" `: F' z- `1 e
;;
评价时间8 K3 i4 d8 |4 _' ^5 X
ask myself [
. F5 m3 R# L6 |update-local-reputation
+ n  E* N) c1 P0 F& c& L% xset trade-record-current lput([local-reputation] of myself) trade-record-current* e7 {% \7 [7 L
]
7 b, [, y( H/ x# ?: Wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; q/ V2 v: k- ?1 A;;
将此次交易的记录加入到trade-record-one. t2 W. e6 F* Q/ B8 s, ^! g" ^# P4 q& m3 Y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ e* H8 g; K. p, F2 s- _/ q
let note (item 2 trade-record-current )
6 X/ i% e4 q: F7 z  h7 jset trade-record-current
9 V5 g* l6 J; Z( X9 w(replace-item 2 trade-record-current (item 3 trade-record-current))
( P$ Y4 r$ w( s. ^4 ^. b$ u& n9 _3 k6 ?6 h
set trade-record-current
9 A. O# _" E" P(replace-item 3 trade-record-current note)
  Q. }2 T4 o5 f7 n
( a; I2 N/ g' t2 X; H2 P

3 s* ^0 N# I2 A. m/ V3 m; iask customer [
* F/ V1 P( p7 z" Mupdate-local-reputation
- C* G, `7 ?) c1 `4 Z* yset trade-record-current
  c( T, u$ q. x. U. }6 z* I: u(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" X; R% i& S! [8 B& w) ]: I7 O& J
]
3 [1 ~; A( r5 W6 K6 A; q4 E5 A# B  b" G' J
) d) N+ X, u9 t) z7 B
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 A4 f. s5 B, C  G9 Z% U6 D
% a/ _6 u& H- S3 B# P/ q% T6 }
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* L% E, z# b$ l7 o
;;
将此次交易的记录加入到customertrade-record-all- ?5 p& P8 J& R2 h7 _4 d$ [% W
end
4 R( ^1 e, _3 [. d0 y/ d/ Z+ |. ~! w$ d0 c
to update-local-reputation
0 B3 A+ U+ H5 D7 c1 o" \( E" U5 bset [trade-record-one-len] of myself length [trade-record-one] of myself1 t+ x0 Y  j& r

% r7 q7 i& W, N  W2 D% e
/ o! h/ U# _% ?& {+ `2 |/ q;;if [trade-record-one-len] of myself > 3
; J. |: a, z3 j( r% W# e. i' o& C
update-neighbor-total
5 H8 t! P% f  f/ V2 o) R$ E: S9 h;;
更新邻居节点的数目,在此进行
( }+ I6 \. o! B; q0 K) s0 Y1 jlet i 38 S5 F5 O! I" w* O
let sum-time 03 a& `2 O* m- d: ?7 M$ p
while[i < [trade-record-one-len] of myself]& |  O9 k* k& F6 v1 d; |
[  s( [4 ^9 O7 C) N: F4 I1 r5 v+ @0 |8 y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 J5 l& ~7 W. `/ n$ d' x+ x: a
set i  E  y/ t2 R3 l8 V: y
( i + 1)
8 Z7 L5 B7 m, p* f1 A! m# p- r3 Q
]
$ n3 c6 b) V' `* n  clet j 3+ J; w$ I3 p- u3 e  Q2 R4 S
let sum-money 0
4 o5 m- i2 I. k# o- @! N8 T% b3 Nwhile[j < [trade-record-one-len] of myself]2 [4 m& W. {" U; e- _. q9 z
[2 ?( ?5 S7 |8 n/ Z
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)
# z( N. n) ~& `3 x. Sset j2 z9 a# f! s. h- I" s
( j + 1)
. w- E" t! |! \4 i3 E4 Q
]& R! X3 G; R) F8 v4 u. t5 J: j
let k 3  O# \, S; [3 v* W) }
let power 05 q' @6 `  [& p
let local 0
# y. y) {; t' ^$ |while [k <[trade-record-one-len] of myself]
. v7 H% z. v" a" F% v* A8 L[
/ C6 B1 N- j+ p# ^$ K1 y$ g5 ~0 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) 7 ]& [" L$ |3 m* ^+ Q6 j
set k (k + 1)
7 \/ p; e9 u: z( j" a]# V% B% h/ O+ ]) L. _# s
set [local-reputation] of myself (local)
! u5 A2 c+ _# \- {) Q6 hend* K' ^+ ?( Q) W, ^/ Y! \. q6 I

2 B8 Z: L4 i! l! }to update-neighbor-total
5 C) }4 R1 b  \" U9 v: g7 [  @- b
! k' W3 k0 X  z( H" [3 Q7 eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' _6 D+ N% v" b

, I" U2 T( t9 P1 X5 G& ^. V

5 U! S% |* p/ ^& Send
& H: @5 M1 Q* V/ D. h
8 O  P% J& y+ c4 z8 K' _' ~/ eto update-credibility-ijl + r' ?3 U" o- v! X; i0 d% a7 d
. M) G* l2 C6 J
;;
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。$ ?0 n1 Y" P4 C/ ?1 H/ Q1 @
let l 0/ D# x: q' b! m* i
while[ l < people ]
5 H( F$ N4 g) f2 T* H;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
, _( @& ~/ `& J3 t: {/ p$ [) f' K[
7 @8 k6 g- ?+ rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)( M0 F) ?/ `( M4 n! E  U" P
if (trade-record-one-j-l-len > 3)
% H4 l, P( h) X% @* l* 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-one# J9 d4 w3 h3 V+ W7 O( t
let i 33 N8 _. M: o9 ]6 I  y) T
let sum-time 06 d; v) ^* ^; R5 n6 B
while[i < trade-record-one-len]3 Q& C$ x. O, `. H# A- c, Q
[" s) e9 H  v! M. z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 x" a: K0 R9 _4 [0 @, ?3 b. u; m
set i
! }5 R4 K$ U/ T$ N) A5 l: r1 ~( i + 1)
+ d7 j* w7 ?0 h* l; m. Q0 ]
]( }# m$ B" C+ [, k+ Z0 t  E
let credibility-i-j-l 0( O( |: I5 l. \1 o* p8 |# _$ ~7 i
;;i
评价(jjl的评价)4 G! i/ g0 J9 R  j3 B4 S- D
let j 3" Q  l6 J3 ~5 L3 G+ h
let k 4+ V7 V; R) [; }
while[j < trade-record-one-len]' T) _1 W6 F" M  b
[. Q, p" ^0 V% }
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
6 j& Z1 F; |% v  V! F8 Tset 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)( n! y, z. b# I5 v9 l) Y
set j( d- P: M. p3 m
( j + 1)
% ]9 l. S( M! \1 C
]- L3 o. b3 E: z+ r& e
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 ))
1 {9 E- [8 E5 K$ I6 l
# o  A# N3 _& R. ?0 Z& y
) m! ?) h/ V% N  q" l7 [  X
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 `" G5 l6 l" j. x. q* ^;;
及时更新il的评价质量的评价
9 m! A9 L' ~0 N/ fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 M  T2 J. R6 Z3 U/ b% A4 {
set l (l + 1)! T* E% _6 n# C
]
; ^; f3 z4 S6 M  |. Kend
' y$ l; K1 y7 e  A5 C% p# O# i2 C* K4 b! r1 R4 k
to update-credibility-list% g3 Z8 }1 s# m2 v  E, P: g
let i 0
; }- F# d  h/ _+ \2 k1 L# {while[i < people]. o$ c& T" m/ g5 D+ E* o& c+ }  R3 D
[
. C7 k) p& |0 |$ X' l# u0 ^let j 0
1 ]1 G( y6 N- y( W3 V5 l6 T6 \let note 05 r1 z# t$ ]8 B% P- @/ ~- f1 V
let k 0- j2 A% c3 C  d7 [$ Q" r/ }; C( n
;;
计作出过评价的邻居节点的数目
& _/ d5 C3 T6 p/ K6 |while[j < people]! U7 u9 g+ Q! Y
[
, Z" C* r, Q! P( I" e8 D- zif (item j( [credibility] of turtle (i + 1)) != -1)6 [! ?1 _; S: y" E
;;
判断是否给本turtle的评价质量做出过评价的节点
6 T1 B1 Y% I$ r7 I  j[set note (note + item j ([credibility]of turtle (i + 1)))- z7 o& c: a. F7 a6 Q
;;*(exp (-(people - 2)))/(people - 2))]
6 P6 H. V9 Q9 w" ^9 C
set k (k + 1)( v" H8 o" u8 R7 S9 \' I! G
]
4 Y2 w8 t+ {, z$ \set j (j + 1)$ B; i4 f! M8 \
]
! N) A  o' O- ?set note (note *(exp (- (1 / k)))/ k)
) o5 o/ t* W  cset credibility-list (replace-item i credibility-list note)+ w: ^4 Z9 v' h3 e: w$ ^+ U8 ]. `5 q* r
set i (i + 1)8 s$ }* Y& N& r
]
; ^+ c& }  @# ~- o1 s  oend+ R) Q" A: W4 X8 h$ ?

! j$ {2 S: n5 ]3 s0 p; R' G6 w' v# }to update-global-reputation-list* i7 v" ~; h( |0 X, @5 R0 Z7 r
let j 0) m; _" v6 z2 U$ \5 r/ M
while[j < people]7 T( e7 F; W) Q
[6 s) d+ H1 @& j/ ^/ D# U
let new 0
) x: H( o+ a8 }3 C, m1 S;;
暂存新的一个全局声誉
9 L- L' U- q3 z$ b1 g- qlet i 0
) r4 V# M7 J' A. f9 C% u" R; olet sum-money 0
' g: F. Z  U8 ~. O% f! ^let credibility-money 00 j- v. h7 o; D" M/ O
while [i < people]
6 V$ J  f. W  a7 r[
7 R( L- ~1 l4 D& ?set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 h9 @2 L9 D3 p. h# V; a5 |
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 `$ T& v$ I& v; l0 o& L" _* S
set i (i + 1)( U$ E; z; u7 |- E
]
% E( r/ ^6 C4 ]1 C2 W3 F/ j6 @let k 0# S# E& K, g# z! J/ R
let new1 0/ d" d, G9 F. x5 K9 `% _1 ~9 Z" x" r
while [k < people]) f3 z! c; J+ k' F/ {; [1 [
[3 W) v7 k1 a9 _2 p
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); [" G2 Q( X' f7 `5 p, g: ^* Z
set k (k + 1)
4 k8 o# m; F0 S4 d- p]! S. u' e9 k  H
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! R. e5 Z" `2 e8 L; h5 X+ B' Qset global-reputation-list (replace-item j global-reputation-list new)
1 k# R$ Y4 z& a) Lset j (j + 1). E9 X5 M6 m. x8 K3 d1 ^/ Z
]
# ^' Z, V- f0 vend
4 x6 l. q7 d! O* N/ @9 x7 j2 E4 m' ~1 J

+ U; {; L+ t" I5 E
6 j* {5 e7 m7 gto get-color' g9 o7 c8 I1 l* p6 f! K
9 {+ [3 f5 h8 Q1 q; r! y% X+ e; n
set color blue

: d! Y, S; u& bend; F9 J5 u8 I" O+ w* @9 T- G
* P- V$ @* _5 B- |: V7 @
to poll-class
! ^" E- d9 G" v4 oend. q6 m$ V) Q) F+ u

" c  F* e% e9 l3 jto setup-plot15 g) _1 q( T" ?4 K& \

9 y4 v' R/ q1 E% Oset-current-plot "Trends-of-Local-reputation"
& e: f  _0 ~0 u9 d1 }0 N

! p8 ^6 k- ?  o5 l! {set-plot-x-range 0 xmax
0 K6 C" H2 }6 G5 ?

! }7 L5 J: L( Q/ Y7 `0 _" {6 Sset-plot-y-range 0.0 ymax

! A4 a  D9 v7 ^3 O% ~# }! Qend
# ^$ N* B5 v; m" Z9 N: e; b
5 Q  }& p/ _$ J6 n, |to setup-plot21 v( j2 T' n5 l6 ]1 t$ }4 s
6 x( H6 P9 v1 H/ R. }( K
set-current-plot "Trends-of-global-reputation"
% R# N4 x4 D, E) q* o# M! T
  k) [8 t3 d) R4 `) k
set-plot-x-range 0 xmax

9 {. v1 M6 V% Y8 r. y$ v( o$ p7 N3 q" U( \) R$ |& L) p
set-plot-y-range 0.0 ymax
4 }% _3 `! ~( I& Z( W
end
: S3 a& h: l8 g* X, E/ [3 t0 {  y) q: o( `# l" S' g1 X$ l
to setup-plot3
! B+ E# _) E1 s+ [9 K0 ]
& Y: |$ F& I! X* G3 w. b4 b# Zset-current-plot "Trends-of-credibility"

! A- C/ `( W) J, j; V9 n, d0 {" F; ]
set-plot-x-range 0 xmax
; }3 X/ C: N' [% ^8 ^# g

3 ^2 f8 @: C7 d8 X5 Z5 q' Tset-plot-y-range 0.0 ymax

* D( f) P, G: uend( c4 w* N7 [' n2 _
: J  F! }$ ?7 j( y5 a' c+ q* g
to do-plots
8 Y, n3 h# @* Wset-current-plot "Trends-of-Local-reputation"  c8 J0 n7 p) p4 Q$ U0 w- v
set-current-plot-pen "Honest service"  r. X6 x' O2 ?
end) p, g7 i& B9 r! o) r! L; b
8 h$ a" d- @" T1 T8 s" h- T
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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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.
8 @( U& i3 x" x
" A( i5 Y2 R' H+ S5 ]+ ^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?
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