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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:
6 Y" ^2 U: \# u8 e8 Tto do-business : ]5 z7 q/ s6 Z" |+ ?: q
rt random 360
1 ]" u1 I5 w  I* K. a! R% C fd 1* T6 m/ V% l  n/ m; o4 V
ifelse(other turtles-here != nobody)[
' j. T, z! j  g( R   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.2 {% Y' i2 b' b7 q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% f+ q9 k# t6 `% t1 `$ h8 C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! `% x) o# z3 l" n% G4 j7 ~- o   set [trade-record-one-len] of self length [trade-record-one] of self
# ?% q; j+ B% [% k1 l# y   set trade-record-current( list (timer) (random money-upper-limit))
0 [: f/ u/ U3 o6 a$ C6 o9 z& R0 r/ g
问题的提示如下:8 O7 g( S( V$ C; d4 N# d5 T

, z. I3 z' ^/ T$ J+ w, [error while turtle 50 running OF in procedure DO-BUSINESS, l2 {" ?+ o* P) B: y: D! ]
  called by procedure GO
; c# m0 b7 z+ S* n9 YOF expected input to be a turtle agentset or turtle but got NOBODY instead.) L+ k0 `6 P& e2 l+ k3 G6 d
(halted running of go)# N; b2 J$ c7 }3 e6 }" g6 S

5 v, Q, }6 f- l6 G/ _& U$ l. N( B( 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~~
$ U' t9 B7 @* Z9 y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
2 Q) r( }2 {6 t8 dglobals[" `4 \4 z8 u0 K2 T. X* i5 K
xmax' L) e2 q! S5 w
ymax. \& V- d( S& w! y6 X
global-reputation-list
( F; T6 L* I1 Q& U+ {3 J6 i, s
2 G  T5 d5 h  n7 ?2 c9 P;;
每一个turtle的全局声誉都存在此LIST. n7 l. N: R8 L3 e2 ^: k# i- y7 U! \
credibility-list
$ _3 R: z  ]3 v5 @;;
每一个turtle的评价可信度  j! D7 w+ p( u) {! j2 q
honest-service
( b# Q& g; u! u" G2 j6 E! Bunhonest-service
, z7 k$ f4 U  K3 k% l: R! l1 coscillation
7 G+ E$ W; X6 m& g9 S/ krand-dynamic
5 T/ x5 Y: K; u/ Q: H% ]1 P: ^* ^]
. z4 k9 M* `! h% ]! P5 w5 X, I: S" f5 M
turtles-own[0 n1 P1 j5 z5 h+ h/ E
trade-record-all. ]$ |" `' L4 F3 w$ T
;;a list of lists,
trade-record-one组成
) S" _. N- _6 {trade-record-one+ G) c3 v  b# o% A, y* p
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" U/ U, k: ~" k  u
+ g8 m) T; f0 T, X# G
;;[
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]]
$ r. d* A$ K0 c3 I8 D/ `+ A/ g$ L$ i2 G  Gtrade-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 ~8 N4 x% i% V# Y2 pcredibility-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
" P! d  g+ z$ G% E8 X1 _% `+ Q  J' mneighbor-total3 {8 A/ y$ a: j; j" g( z
;;
记录该turtle的邻居节点的数目
0 m$ w) L- _  a$ q  v. r8 Etrade-time7 E8 A$ H2 D7 O! R. g
;;
当前发生交易的turtle的交易时间
, E, a' Q& e7 d/ s8 F2 |! Vappraise-give8 ]7 _8 n7 Y6 X. [. f7 ^7 B
;;
当前发生交易时给出的评价9 [( {1 V. ?5 T+ c
appraise-receive9 Q6 Q. P8 F$ F5 J! _% S0 X, L* y5 V, M
;;
当前发生交易时收到的评价
# l' C$ ~: x- N6 d+ [" ~5 _; H8 }appraise-time) n4 Q3 _9 ]$ k6 \  Y6 N
;;
当前发生交易时的评价时间
0 F' M" _" |+ |. k  q6 w2 Vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉* s' \6 \% T% H) {' O3 U3 }
trade-times-total& v6 y1 ?, B  }5 s/ S' \
;;
与当前turtle的交易总次数% W  V3 m: a3 T- T* }. j/ _1 p
trade-money-total/ R( F# w  ?7 |5 }% P, }
;;
与当前turtle的交易总金额2 V$ P. G7 r* X8 t! m) ]
local-reputation
) h; E) l8 O7 jglobal-reputation5 r+ p" ?9 y' Z) v- U' X
credibility) T3 T* R$ @: k
;;
评价可信度,每次交易后都需要更新- }  \* i8 s. O8 z2 C/ u
credibility-all# g. Z+ f1 o  K6 G
;;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' F' }; W$ _- H7 n  y
5 J; ?6 [0 Z4 c/ @;;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
3 J% p) d, B2 E, bcredibility-one' N! o$ `+ m. c) q9 E: Z
;;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
8 q( d- }5 Y8 x; N: M* Nglobal-proportion
  j5 Q6 B" t( @" @* z* O' w9 U0 wcustomer
+ {# X# B4 R( f8 W9 Qcustomer-no
. q& J+ y; m4 C9 u7 e' O, e8 Ztrust-ok
9 }7 D. k5 D. ctrade-record-one-len;;trade-record-one的长度
: U0 v6 O' |8 ^- H! W]. R0 c1 m) R3 E
5 Y4 q2 w3 s, W. S( ?
;;setup procedure2 \) c8 p  S1 Y

5 q! j+ i, w9 E: l) N" m* |to setup, ?+ b( i& b( j' @' i/ V
4 x2 W/ N; j4 }" S
ca

' I/ l, i# P0 i" q( s
3 ]$ \/ U- T: i+ @' [initialize-settings
% d# {. J* H# T  R+ s
/ G5 F+ B- S. y4 f" N8 N/ J2 r
crt people [setup-turtles]
; e% \( O( [0 m9 Z" W
0 {1 u& }8 p& i7 ]
reset-timer
$ B; _4 P) `; |. d; c, Q9 R
! j6 Y% Y9 r+ X! b8 j* k! g
poll-class

# O7 B: h2 K: I9 [! ~' _: E; u
3 V& I$ q: Q* X2 osetup-plots

8 W, p3 }1 M2 Q) ~" u5 }" o# E& L/ @% z  j- p  l" V, h
do-plots
5 t3 Z% ]& }# S- h- E/ _4 G- G
end; q+ ~5 a, P( u5 l* M5 H% X  n

+ N1 C$ W# t4 |3 Gto initialize-settings
9 u4 Q! d' y/ Y0 G
( t9 D$ |" q7 b9 R( ]set global-reputation-list []
  X6 h. g' ^6 }3 q4 P
; }! G/ E0 L$ c  U
set credibility-list n-values people [0.5]

: k2 Y2 V' `; g  F" O8 T7 z3 H, Y7 O( t6 J3 ^& X7 Q* H
set honest-service 0

  L( c; P; i& g6 ]5 C
! A+ f  C. |1 D/ ?; Zset unhonest-service 0
' d, H/ @$ O; m8 b" {" y' k4 Q

$ r7 D2 B" X3 N) C' P# xset oscillation 0

! b, E( [. [0 p! K
! s3 ~; E2 }2 i7 zset rand-dynamic 0
" J1 h5 a; Y) D& C4 J
end+ _4 N! x! D% ]3 I; G! o
2 W. ?# C% v- F6 e5 C/ C
to setup-turtles * t' R1 c1 H' t. o
set shape "person"' o1 T* s$ z9 j- l, V
setxy random-xcor random-ycor# X2 ~7 _0 t7 g+ O. r+ B
set trade-record-one []
/ ~( Z6 b5 T3 P

3 V* s5 x8 {# s8 O! B% _  m! e! Aset trade-record-all n-values people [(list (? + 1) 0 0)] 3 @' A" x( K) f- b% d* a. I

) q4 @) ?: L4 O( D7 A: L$ d" c5 oset trade-record-current []% \. ^7 c" `( I4 C* H( \
set credibility-receive []
; X  F- N# x( ?/ ^4 D4 oset local-reputation 0.5
+ M% [# B& O/ B; W- K" L" L9 pset neighbor-total 0
2 b$ S& {/ M, w3 E$ Xset trade-times-total 0) e9 e. f0 @7 s* G
set trade-money-total 07 l- e4 N% w" N$ u" x
set customer nobody6 Y, I4 E# L) ?* q+ W% m9 K& ^
set credibility-all n-values people [creat-credibility]  Z0 C# i( n- G8 F4 J- V4 E
set credibility n-values people [-1]
8 y& b1 v1 @: L% y+ L$ o  lget-color
( P" b9 X- J# y; X9 U
" M& e; H, W! u3 m1 ]5 B6 _
end; O7 n' E. o9 ~) Q% T* p; J7 }' I1 @
6 u; R' u, f1 @0 w; d4 I
to-report creat-credibility+ C' p7 v" u& g2 R& _% Q
report n-values people [0.5]; K" o5 U* Z4 [* r% a9 E' a
end
3 E' X9 @7 g* N# Q1 @/ E! T
" t4 Y$ z/ T0 K1 U9 R8 ^to setup-plots% @1 \$ k9 ?& B, U2 G3 _1 l

6 _$ a! a9 [4 x6 z! t7 {0 ]set xmax 30

  _9 o- z0 R: m) j% u7 O5 [
$ y1 e- _- `1 H+ w+ u5 Zset ymax 1.0
3 r  w+ z% Q* W! ]+ q, @

0 w1 l9 G3 p* N4 Y2 Q1 rclear-all-plots

6 ]5 u2 l8 \; q/ }* g' ~+ d0 E# B
5 N: G3 B3 r$ @1 y) Osetup-plot1

$ B, I8 {3 E8 a+ H% l' N7 R
* {! u2 F: Y; b1 ~# ?0 ^, x) p9 hsetup-plot2

5 O* x& o! S4 Y+ v. b  W" E  q8 E" [1 B( z( c! r  z$ I& B) U4 h/ p7 [) C# D  ]
setup-plot3

  t' O1 c; v; A& B! U8 v2 M. Rend( G2 p$ }- N9 i2 E( E
& f1 H! ?3 n; p- _# Z4 ?" |- f
;;run time procedures
. }7 v) c/ v) D; y+ K9 g$ B' s! q+ y& c- y( o/ Q+ U4 Z& J
to go
4 L5 Q8 ]5 ^$ E+ p0 W6 k7 N# k
" x5 x0 X9 I3 b; T, Gask turtles [do-business]

( g; o1 _; g& \end  Z* ]& @  r7 R0 ~$ P9 I

: E" J; d7 L. f( `* I* _8 v' V0 t0 pto do-business
6 t& s3 B+ A8 l+ q& u9 F

' H, j+ e& v$ U* y* ~. F# S2 j8 }
+ W8 c4 n. r5 O8 {rt random 360

* J( e) N6 s/ I+ a" k2 R$ B9 O( x/ Q9 c
fd 1

6 ~/ O' f! X  O! o, Y% C/ _: A; p8 L  q8 F& V
ifelse(other turtles-here != nobody)[
: e2 b$ G) S7 K) v) x

0 U$ G! |7 r# d( M) Vset customer one-of other turtles-here

4 b- r) O! Y- A5 {& l- g2 g. M
; ]9 [* b8 o3 c3 y$ y0 y;; set [customer] of customer myself

" V" h' [. g$ R  R' Z, s1 m9 T* Q+ B1 r; {& o  ~: i# m
set [trade-record-one] of self item (([who] of customer) - 1)3 Z9 }3 v9 y* I& `" S: R  v- X
[trade-record-all]of self' R3 k3 p& L) I. A+ y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 P# f7 I. q: _/ Y3 I/ x

5 [9 [( D& ], w  w4 r0 Z3 Q; zset [trade-record-one] of customer item (([who] of self) - 1)
8 V) H0 L) A2 O0 A" V[trade-record-all]of customer

& \. h7 U( U7 T! T6 o3 V
/ |+ r0 r9 X( uset [trade-record-one-len] of self length [trade-record-one] of self
: n* G# M) O4 y
- ?4 _. j4 b2 |  [9 u! t
set trade-record-current( list (timer) (random money-upper-limit))

) z5 z, P& Q* A5 e5 W$ j- U) H' [4 V2 Y
ask self [do-trust]
9 g' Y8 B% M, b# K;;
先求ij的信任度( ~$ u5 k% g  z0 l) C& t

. I+ P3 g/ b  I+ x; k: `if ([trust-ok] of self)
& q* q  E; _. h) [1 p4 C8 d;;
根据ij的信任度来决定是否与j进行交易[
' @. S4 S7 q. Y  X& W5 D% f' hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 e( B2 T% }) \! E9 C& A0 m# Q; n6 w
5 D& I, p! A1 L& y
[
$ O- V* D: H3 \9 a* x
- H3 e! ~/ E. l! [( g7 \
do-trade

& Q3 I4 ]+ K& q6 u: I: u% S8 J. F" h, x8 Q& ^7 O, F
update-credibility-ijl

$ o# }  v! [, l3 }& U# [) D7 p. w  y0 z2 ~) F( u- x
update-credibility-list% D0 Z; T7 J# w7 t8 r6 D  i
& _  D4 V7 I; G# {; _0 R& u! W
; T5 z4 y' `9 t9 d3 P' p/ @
update-global-reputation-list
1 r" D" g3 y  L% B% i1 u9 T
+ @+ q# j2 p/ ]' d# a" r8 q
poll-class
7 q+ F0 @5 z* Z9 T
6 u; I9 }4 ^$ z0 G
get-color
4 @. N3 ~  J0 i( R, `6 W

; A" S1 I" O9 k" ]; D]]6 ~* ]9 W. o4 g  d4 J
, P; C+ u: k9 M0 Y1 r! B$ _
;;
如果所得的信任度满足条件,则进行交易
( f0 Z- l% J9 C: Y9 P- ~6 x$ ~  }
0 b2 Y3 @/ B) R6 G9 I& W8 V  H[

$ k8 ], L( I" B; I! ~7 Q( F: a$ m: K4 n% X; H0 L7 D: W5 f
rt random 360
, q) L0 F6 {( D" M( N

* R# Z% ^2 A8 b0 u* nfd 1
2 Y* a" \/ R2 o, E3 b& V- _- m0 d
3 J7 r& D3 g# ^6 \
]
2 k% K  A* Q+ c
8 h2 K0 i) X1 t8 E' I
end
( o% c3 x7 K: z6 d" D! k

8 F1 ~7 H" ]9 x' ?6 \1 Dto do-trust
& L! U0 }, y& D2 o$ q- qset trust-ok False
- }8 d5 l9 v: s% s. x- L
. d8 v7 n5 x- Y2 Y0 f: r" Z

% @' v, A7 u! Glet max-trade-times 0) _, n5 x8 m8 {7 y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# S3 l1 ?, |0 z/ J* c
let max-trade-money 00 A! Q* q  _) g! z1 k
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 z3 G' `8 b- C
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 l# ?9 e! T% m% w2 h# t# j: h! Q( V' b- _7 A0 f* `; e

# Y- Q# @* |" d& oget-global-proportion
( z% m5 q9 F0 F$ \0 Klet trust-value; K0 C. m8 @& Q8 i6 u0 j& m4 j
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)
+ c, e" h& a- ]& Y% k) ^6 l
if(trust-value > trade-trust-value)
/ x% _$ w/ W) Q/ j[set trust-ok true]# D( ~5 {/ F# e  Z  r) M) o
end6 v2 z" y4 b$ u
' G; ?. g/ A- P# A
to get-global-proportion7 U6 j* ]5 f0 U' H2 ]3 f+ [
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 c5 D9 a* r) [9 A1 ~' K[set global-proportion 0]6 _7 K+ J. e; j
[let i 0
& w- O! y7 U3 c( h+ R, @" Glet sum-money 0
, x5 m: a; s$ k. `while[ i < people]1 r) r* E3 g* U, m) f5 f
[) l6 i/ D& ^: A" H# {
if( length (item i1 L6 }3 v6 }! ?9 E( B
[trade-record-all] of customer) > 3 )
- w+ F. x: R  m" i6 b
[% Q! t- B0 {# V5 w2 q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' }+ g4 O; [; ~% u]
. q5 L4 v4 T+ u  f' V' N# w]6 ]5 r+ S" @* J, \
let j 0- o6 }& S/ w( }
let note 0) I* q7 _5 P( b& f5 |: ^( W
while[ j < people]! o0 G" ]/ o" {+ p& }/ W6 g- d* n
[1 `1 i" W! S' s# `
if( length (item i
3 o* q& P( B  @: P  T/ D. {[trade-record-all] of customer) > 3 )
; x/ B# q' `/ w4 K% H: E+ z9 }3 N
[' `. }" c, d7 e0 F2 y* y" D
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 l+ [, @- z  u3 t
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& G9 `2 G- l+ b; [0 E' E9 s
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: L. B: h7 G& M7 _0 N5 r  j8 O' S]) p2 f; b4 u+ X7 m7 H
]" F4 T. {! M- B! h
set global-proportion note5 @) M8 k* s* }" o
]
" V: {, r/ x& F9 Vend
# v, W1 N7 t: ?8 q5 `$ }
2 m( h( p# O3 ?- |6 qto do-trade+ ^/ ]. ]5 M" @& I! f' |. T2 X
;;
这个过程实际上是给双方作出评价的过程
# @2 s* @; N, nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, R+ f7 {" _# `9 ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% _6 M0 U3 ?5 [; g) x' [- l- N8 U
set trade-record-current lput(timer) trade-record-current
& F, r% E8 W* p1 N- m;;
评价时间
3 H9 l6 k6 i# x1 w6 f6 fask myself [5 d& n1 u, u4 ~; f
update-local-reputation
) R8 A1 H% |' g/ t7 j* A( \7 ?4 kset trade-record-current lput([local-reputation] of myself) trade-record-current; m$ V6 S  G/ x  |2 H
]/ v4 t% w, D4 |, @0 F+ Q6 c( B
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) P. {5 S) h& L0 c
;;
将此次交易的记录加入到trade-record-one) {0 n' P9 X1 H6 C
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. b4 }" s. N/ o' xlet note (item 2 trade-record-current )
5 Z( a/ i3 E: S' ]7 b$ A1 Sset trade-record-current8 w. E: \: P' R) T
(replace-item 2 trade-record-current (item 3 trade-record-current))

3 O% k- o. Y9 A* U% I, Rset trade-record-current6 |; {7 Z/ w& a& u
(replace-item 3 trade-record-current note)
9 u- |8 u# D, Q- j4 }; V6 n6 F) Y- p6 `3 D& V5 Q
4 h4 ]/ d2 t! P" M& v$ Y) W, o; r
ask customer [
2 O) W8 c, j, F2 o6 y7 y( P: Qupdate-local-reputation
/ _; n% p" A+ u3 w9 Y* Dset trade-record-current+ a9 E! P& v& N/ |' \* ~# a2 p
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ O) W3 M4 I4 S5 Q]; m# a5 y4 ^- n
/ n6 ]  r2 r% j$ O! H/ S% I2 s

. c, K* W% [6 r: h. Vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& e- `* W/ Q* R' B9 A" B
9 Q* V! B' S# H0 m
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 x3 x2 X) I6 D: v6 j- O
;;
将此次交易的记录加入到customertrade-record-all
* j( Q- G/ d2 @& gend
' k# N" x' g* s7 v! [4 A" }! ]: [, A) z% i
to update-local-reputation* y2 k8 E5 N/ z
set [trade-record-one-len] of myself length [trade-record-one] of myself
6 T3 A# E% I& E# G, h4 P7 o0 V$ g1 p/ N& e3 j
; Q0 N* b, Q( ~& X
;;if [trade-record-one-len] of myself > 3
- [1 |9 @$ l& e$ B6 e8 C4 z7 R
update-neighbor-total7 Z& }6 T1 h! c4 q
;;
更新邻居节点的数目,在此进行( ^  _( W* N7 M6 k8 f
let i 3
4 R2 H$ R  \6 U# Rlet sum-time 06 k5 k3 n. W' }: Q% C% a/ u
while[i < [trade-record-one-len] of myself]/ M" k9 W' o  j- O% {8 e
[' Y( o0 p; {3 Q( c4 ?7 B: H* M
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 ~+ P4 }& O2 y4 Jset i7 q7 {. r8 C8 D
( i + 1)

; M8 {, q9 f4 I5 d/ v6 @]
; Y0 t% o# I9 K+ r4 c7 r. nlet j 3' _  I2 ?( S+ ]0 M2 s
let sum-money 05 k$ l4 Y- _) ]5 r) o9 M/ X
while[j < [trade-record-one-len] of myself]
7 {5 Y+ b8 x+ T4 D[$ {5 a0 k3 j. z* h! Y/ h! n
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)" S- y) ^* q4 r  n) L% C
set j
+ e( d0 _/ y9 s7 _6 _4 P+ x1 t( j + 1)
5 B" W8 W& {4 Y. K
]
6 }, E) B* F7 t* Llet k 3
" C0 `  u5 y% T+ Tlet power 02 m0 i0 \" R+ K% @
let local 0
' P% o2 ?: a1 P4 c5 g. ^1 L5 Ywhile [k <[trade-record-one-len] of myself]
+ K/ s4 L. U5 e[
5 X+ N9 F. Q" B3 t# A  [5 oset 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)
# V! \! B/ s. X  G- hset k (k + 1)
( }- l" w5 q* G8 Z: F- j5 I]
. g& U4 s7 y4 a; N3 q, _* sset [local-reputation] of myself (local)
9 h6 |2 r$ ?; M2 y# A+ ^# kend
. |& ~. i) `/ X/ o1 D( G& F# U1 [, J  ]9 _& W  Y
to update-neighbor-total
4 d+ I. ]6 g" i# s. H2 F+ ?+ L' W0 ]) V1 v! z
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ `7 Q; t% e4 n; _1 m( G. y" C$ F! I$ L# Z  C- v

( f/ J- T! B7 q# Nend( h/ F0 O& K  z
4 \7 L; r- V; c1 B
to update-credibility-ijl
( N5 P) H1 Y0 t8 F" w
* ]" x, q0 A. W6 C1 q" o;;
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。
) g* ]9 s# T; N$ blet l 0& x9 r$ y, u# b1 m$ E: g- g" P
while[ l < people ]
0 W, t3 e% f4 K9 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
% B7 K) v# M3 Z  |9 t5 q[9 B, O; P! ], v# s! y9 \! x* h  K
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 }$ X! e! b! U1 r* c. `; W) q2 Iif (trade-record-one-j-l-len > 3)% ?4 K1 H5 F7 r. A+ F8 ~
[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-one9 m4 A4 u3 i/ C; P8 S& D8 p
let i 32 n) v( d- S" s$ `, l8 ]
let sum-time 0
: U4 H( Z$ S) |1 k" J7 `1 |while[i < trade-record-one-len]6 C# c9 _* ~$ I& t( q8 b6 S2 r
[$ v; ^3 [+ s# a  Q1 f1 {' z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# T8 }1 S2 `3 |7 Y$ qset i
) o, `. y# B( Z3 A1 w2 y( i + 1)
& _7 Z% b3 o4 e$ w# T
]
: K+ W% |6 X8 j- w+ w" y* wlet credibility-i-j-l 0
# ^) [6 A$ ^. S5 |. C/ i;;i
评价(jjl的评价)8 f2 Y9 F# ]) p9 w5 C
let j 3) k% a) M- }5 w9 ^' ~) y, q
let k 4
0 x& M: i4 H9 E  G+ V( gwhile[j < trade-record-one-len]
9 Z" y* p" u, P0 ][8 J& A; _" H5 ]$ i# Z* 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
& ?( g$ e6 O3 cset 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)8 K& \9 ]/ Q4 M* i! d. O
set j" D- @9 {1 Y& t( Y! F
( j + 1)

5 m! g7 M7 V# H, L0 j/ F]  M9 k+ A; }7 U
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 ))
: \4 Z+ S# N. C! v) j4 ^+ t0 l3 u. a; y

, p/ f4 Q0 e- u! b9 W1 R4 Jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 U  c# o- P( o8 E;;
及时更新il的评价质量的评价; y/ `8 y6 M$ L7 k" z1 Z; K  l( E
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' Q+ |/ D) I* ^: f3 z
set l (l + 1)! H2 K3 e. Y  \9 ]
]
; {6 ~1 L5 I9 a7 O7 ^, ~  [end8 f, _! {, {5 ?- z& j

3 z2 z+ p! X* G0 s  uto update-credibility-list/ ]& {" S0 C" x+ L! k
let i 0
6 ^# i% `) B1 a. c) X9 ^- S% p; t( Lwhile[i < people]) L8 E0 G5 |5 C$ G4 |
[8 `* H  K( ?2 I. Q2 `! }0 R
let j 0
) ]  ]# R2 i& {' Y( o" \# ulet note 0# p; \" ~" s7 N7 X
let k 03 B3 G+ J0 |( y
;;
计作出过评价的邻居节点的数目
: R* h: }& N' b: o* uwhile[j < people]
+ p8 k8 l6 \$ w; U[
8 x* J5 W! Q7 O$ Gif (item j( [credibility] of turtle (i + 1)) != -1)( n% v1 I% J& u/ P# S7 _
;;
判断是否给本turtle的评价质量做出过评价的节点/ h* g0 s9 G! G' O
[set note (note + item j ([credibility]of turtle (i + 1)))) E* }6 S, f! c
;;*(exp (-(people - 2)))/(people - 2))]

$ a. U& S8 E: X0 b- n6 J/ {set k (k + 1)( a+ c( o9 ^0 {" |$ I0 w7 B
]
. d/ ]* ^: P/ hset j (j + 1)1 S* o8 \3 P* b: b9 G
]
9 X0 F! G: i! Z; e( T9 v% eset note (note *(exp (- (1 / k)))/ k)' t8 C( S4 e  B$ W
set credibility-list (replace-item i credibility-list note)% _, \: J  W7 k, ^" H
set i (i + 1)
# m% j6 u6 E' Q  F1 Q& G4 t. o2 s]4 F( M6 a1 t' ~% ^
end
( l+ G! ?4 h9 {# [! r0 F
+ d, W" h0 n8 c8 D# ]to update-global-reputation-list
) u  i5 E/ [$ k. clet j 06 F+ y3 G; i3 ]# |* l
while[j < people]6 C3 r% u: A; _' m2 g
[9 l# ?, p) W' w: b3 Y. H, ]* x
let new 0
1 G! R  J  z3 W1 D  _;;
暂存新的一个全局声誉
# F& h6 L3 y, Y2 ]3 Hlet i 03 M7 J8 e  f" B+ [; Q* Z9 P6 t
let sum-money 07 O6 h0 H! |, q- X/ W
let credibility-money 0
- N+ P( V7 q- F, Vwhile [i < people]8 a" D0 w; [: F+ H4 n+ G4 c
[
; G" m+ J2 J6 H' E& N: w9 L+ K, Dset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ t" G# A* }3 N% L5 K9 L# D7 U
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" ~  C& {( j2 n# q0 {' Qset i (i + 1)" w" h! Z& F( O$ J2 T& P
]5 Z* X2 }6 r: B
let k 04 N4 b& O- u$ q' G, t
let new1 0
% E/ e0 ~6 A7 n" `7 a" Owhile [k < people]
: F5 C, v6 i2 Y7 Q. a- O5 H: r% E[
; T# _/ l/ y. Cset 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)6 z0 T4 F6 A6 W3 R7 a' |
set k (k + 1)+ W9 P+ R9 l5 t" l2 s8 s. V" o
]0 W+ {" ]2 W  I' Q* P1 J$ \
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . I7 s6 M' Y2 V! a/ A7 |5 ]' ^" k! l
set global-reputation-list (replace-item j global-reputation-list new)
) N, J* L3 |; q8 N& uset j (j + 1)
* c+ x$ P8 x. w7 U7 X+ g1 W+ r]
% U* o6 y5 J2 v& b3 Nend& y: c: C# @8 y: b% [5 f0 W' @/ w
- A( _+ a* e1 z- w8 l
4 ?3 q: g6 U1 N6 |& u7 K# U& k$ W

/ V+ v' M9 q: q& Zto get-color
" h+ n4 p$ g2 w+ |7 d6 {
* g, x* p1 X9 A# {6 Gset color blue
$ Y* D" y# v1 e! R% A2 L5 u
end
  p3 A% R+ Q& M3 e( c
- }/ _3 _& p& C* H0 \$ Cto poll-class
4 G! b" K9 A5 T. N+ `4 Aend
1 L! S' Q" i7 S* c0 \
& J" U; S  R0 {/ f6 lto setup-plot1) I# Y/ a$ j) _5 Z2 s
- q  O7 |+ I' d  l5 q
set-current-plot "Trends-of-Local-reputation"

  M  t' h2 @% @4 s5 C' g: z
( K, n9 a5 a+ S  Xset-plot-x-range 0 xmax

3 I. i# u6 e4 p# d9 A# O  |( {7 X9 @" Q$ v1 t8 A) z0 U+ q; B
set-plot-y-range 0.0 ymax

) B2 {8 c8 Y( k. ]end
4 c/ o$ g' a8 F! _( d. c! B# L, v  P5 E& n- }3 }/ R& a
to setup-plot2! X3 j1 r+ b9 m
( c) k7 A# f: w2 g
set-current-plot "Trends-of-global-reputation"

9 a9 @7 z; c9 \5 P. x
. N$ p3 V: o4 A) G2 tset-plot-x-range 0 xmax

8 z! q0 \" }' k2 k3 P7 @4 p2 e9 j) w3 y0 W5 H& E4 u5 t
set-plot-y-range 0.0 ymax

% j7 J+ W- X* S. Q  F, F" v5 q' lend! G- P2 j# H( l( @/ g

8 }, P* T, Q$ J4 {6 W) {. qto setup-plot3
, G6 P6 p2 Y9 x4 q4 h4 u2 ^9 s
5 U3 N0 K, q& \0 ~4 S$ `set-current-plot "Trends-of-credibility"

3 l& f9 r1 v6 i$ e9 v1 F& P5 ?1 E1 S) V6 a5 A5 B
set-plot-x-range 0 xmax
7 ^- m! b' P! h7 K1 o) v

  ]" R' _. P! r* \3 e; qset-plot-y-range 0.0 ymax

# O9 A/ F$ W5 Kend  z8 F' t2 z6 N! `# S' i6 {& Z+ t

6 g7 B; V  Z4 e( ?% n9 ?- Ito do-plots
- K4 ]. ]% v, B5 s0 F2 x. Pset-current-plot "Trends-of-Local-reputation"
( m: }  v, }6 U6 {set-current-plot-pen "Honest service"& M/ l% [* e8 F5 O. D
end
, t$ g' S0 p4 {# Q$ f# y1 o1 G/ y5 L6 J& ^3 L1 {
[ 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.- \: D+ u5 }2 U6 B% ?
1 x% o4 J8 j5 S
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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