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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 U/ Q. ], M8 J* [2 F
to do-business 2 i+ w9 V' E1 Y
rt random 360/ Q2 d5 L; K/ L+ z) |' s
fd 1$ |; A6 {/ u5 |6 g0 z
ifelse(other turtles-here != nobody)[, D  `  Z. g3 `' M' `8 E% Q
   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.
0 {8 h# S" }* d3 u: M   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 b7 p3 E. l8 m# s' Y0 b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) y) P3 s& s) c   set [trade-record-one-len] of self length [trade-record-one] of self
' A- f7 ^3 M" g   set trade-record-current( list (timer) (random money-upper-limit))
# u0 S, J0 w1 e3 e6 q" I0 h! ^8 d; R) Q3 i9 ~& P1 H
问题的提示如下:( `" l# I+ @5 s/ \2 J  M
+ T7 C2 H6 M% ^' A' o
error while turtle 50 running OF in procedure DO-BUSINESS$ j% Q$ W5 G4 l
  called by procedure GO
% R" P2 m- _7 L8 \2 }5 @, VOF expected input to be a turtle agentset or turtle but got NOBODY instead.
) r# Y3 ~9 o2 b  P  X5 E$ p" C
(halted running of go)- @* a! {) Y  }' k' A

4 m3 l# r+ x% V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~~7 u! V5 I/ I: M5 Y; G7 H5 F6 t
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% n' u* O0 X( V% m8 bglobals[+ R' Q5 Y; }' r' ?& R
xmax
( a/ M! }' i9 O6 k7 r: I3 [ymax2 P. F1 D* t5 O* Y# R7 h
global-reputation-list6 W) q) C4 [9 X& ~  w. U. d
8 B- c* Z, y+ ?7 D! F1 n1 _
;;
每一个turtle的全局声誉都存在此LIST
/ J8 D8 ^+ z* w; Scredibility-list
( l5 P8 G' {# u;;
每一个turtle的评价可信度* f4 u) @9 N8 U4 d2 j
honest-service
! l! E, q' c; G: G  {7 eunhonest-service
2 Q; Z' C! N+ S7 ~; I+ Poscillation2 J3 @  a, d, I+ f8 f! L
rand-dynamic
/ G2 U" e1 \  F  Z]; B8 c) z. q, J' D  y$ F+ ?2 Z
3 G5 W4 |0 ]* j- E. j  J4 h
turtles-own[# |/ O! ^: Q" H* N# |. P! v9 F! m" w
trade-record-all' q6 g8 M9 A7 O
;;a list of lists,
trade-record-one组成
- u0 J$ C' l0 Ztrade-record-one
' S4 S5 N. I6 };;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 `6 a: \" s. m3 t3 e. B& G9 @) _* J+ K. b. s' D0 ]2 B
;;[
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]]- j. a( G7 k- q
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]; G: n/ P* G( }$ O" M
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
& h/ X# |1 @8 g' W" Aneighbor-total
9 s( _. ^: y5 x! z3 B;;
记录该turtle的邻居节点的数目
8 z' ~# n# ?2 P( P7 jtrade-time
# B0 T4 D' y/ h% i  u' d. k% d;;
当前发生交易的turtle的交易时间( z4 h7 R$ v- c+ Q7 `" s
appraise-give( h6 ]; ~7 V) u+ k
;;
当前发生交易时给出的评价! Z! w* u1 o' [1 r* s
appraise-receive3 W2 ?# M: G. M% Z+ U% F
;;
当前发生交易时收到的评价: d' c7 K2 G# I/ |: s' ]
appraise-time9 v* C) z( R& @% _
;;
当前发生交易时的评价时间
  M+ o6 v5 c) T/ Y! J+ N2 z7 T" Rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉# V% ]2 S: g8 M+ P
trade-times-total6 W- _9 |2 e- p
;;
与当前turtle的交易总次数
! Q- M/ |: g7 gtrade-money-total
1 z2 I0 Z0 d% p+ m, h: ?/ v) U) G; I;;
与当前turtle的交易总金额
4 Y6 ^* h2 ?1 X, p8 H% G) f. H; ~( Ulocal-reputation
, g& b+ i, M4 D; m, s8 Jglobal-reputation
' {- Z1 U& ~& q$ U, U  [credibility
' K# `5 Z  ~8 D( B4 s;;
评价可信度,每次交易后都需要更新- z+ w% ?+ N/ `0 I6 B4 N
credibility-all
5 M, ?) f- V+ u3 h8 E+ \) T;;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" h0 W  |1 c2 e3 Q3 T1 A' U

* r8 }) x- r7 ]* E;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
" G; y6 A8 c" r% P/ gcredibility-one
8 N) r. G8 ^/ b) v3 q. K;;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
/ O! V9 \* J# A) Xglobal-proportion
8 p$ j+ f' L3 Ccustomer% B2 U- a$ S, d4 F
customer-no
- _) t: g5 R& T2 otrust-ok) S/ d1 V9 D$ P: h% E
trade-record-one-len;;trade-record-one的长度
1 L9 ^( x8 ?, X; ]1 l]
7 M/ }$ i" e3 ]; N9 _) t1 q  E0 S9 g! n% `
;;setup procedure. ?6 D* o4 g( C
$ A3 ]! `5 l4 ?/ u9 G
to setup
  V7 ?* `$ s2 _/ \- H4 k  ]5 L* z$ Q' K5 Q9 H4 Q
ca
1 y+ L* D  ]3 z

- l, K% T$ C/ P' i: ], U9 f( oinitialize-settings
( ]+ ^  O4 H2 p: ~; Y

6 @) i4 [. \! D* Ecrt people [setup-turtles]

- q% E8 w! s2 |+ L; g: ~
/ o, K( N: U6 p( m! B( `& Freset-timer

+ A# Y8 R% U, S" w* V. F
/ F5 D5 ?) d# `$ qpoll-class
" o6 f% H9 \! M8 o
& w+ H7 \" e* a# _
setup-plots
/ `: J. C+ w/ r# K6 V

3 d  B$ }) ~3 ~" |/ @do-plots

8 {# z+ ^) S+ y( q  wend% D" k& n1 B- G6 c! }* W

$ ]7 l" h: b( x- x3 b' q! m& d4 R. Ato initialize-settings
% r' l) I0 g2 h) @- |0 G) ^
" j( ]- k/ U! A! e6 U" s' Rset global-reputation-list []

; g; g" ^/ M$ y# V, d! d# y, \+ |% `; A% N$ u
set credibility-list n-values people [0.5]

1 ?) H! I5 J. R8 ~9 ?. P) W& u: }. n5 N2 o. M
set honest-service 0

# X! |2 X& i, s( E1 D' g8 T& b4 H( @
* y! C+ v# I& J, xset unhonest-service 0
7 [& d3 y$ t- Z! t
9 t$ f4 U( g3 ?0 H9 C! _: F
set oscillation 0
; [4 c$ T$ Q0 s( M0 a1 r$ R
5 N0 w  D; N1 F& c0 P# d' m5 c% q
set rand-dynamic 0
2 b' l( r  B. q% {* V, H
end
2 |5 a, \7 }* r
5 S; c  \/ v4 D8 Nto setup-turtles
  W1 e# m$ b2 Z' J1 E- vset shape "person"
/ u' Y, J& N2 S0 B  s. Qsetxy random-xcor random-ycor+ m4 Q" V/ a! @' Y! t: V
set trade-record-one []% l* p. |0 b, n5 o2 n3 @* e
9 O: B8 |  t; r  }: `+ ~( R
set trade-record-all n-values people [(list (? + 1) 0 0)]
+ l, W* o: n) x( f2 z
% t( [& s, }' O
set trade-record-current []$ H4 }. f$ u& e) S6 X* j' n
set credibility-receive []
5 h$ p) ^' `" G" D! o5 f; t/ tset local-reputation 0.5" P/ Q: ?& U% ?3 l0 d3 Y1 V
set neighbor-total 0
* x4 P$ u4 X: P6 ~; cset trade-times-total 0. W7 J  c( H: s; p0 ]
set trade-money-total 0- b. F+ l/ W0 l! l1 D( B
set customer nobody
! g& p) V; [- U- Dset credibility-all n-values people [creat-credibility]0 |- O  @0 N* d; e
set credibility n-values people [-1]
# W. N5 ]1 E9 C/ U8 \1 a1 g2 eget-color' h2 s3 @6 X' H+ y
6 i/ W( ]* }. X7 j5 @; x" k
end
" T6 g) y7 p/ w
+ f1 i7 C/ Q' J5 j9 }1 m) t0 tto-report creat-credibility
; l, V$ ]" ]2 I; ^1 ?8 a2 Dreport n-values people [0.5]2 {* F  Z$ @( `, H$ S9 v$ a
end
: ^/ i3 r7 P' y3 O
6 O2 A# E- \3 n& X+ j; `4 Kto setup-plots
! g& q3 F) F8 V$ M+ u) Q
6 t( x1 C, E1 }set xmax 30

, n0 o2 b6 L- Q/ Q, U( P% A+ u$ Z8 ?: D& a' x
set ymax 1.0
; b9 V1 b' v6 w- ~* C" y( F$ }5 _
1 x/ ]+ b, V& l0 y, ~) F
clear-all-plots
5 _: ^3 r$ j) u2 x( B
/ r' u1 U8 R) B& ~
setup-plot1

2 a6 p. [5 \" B3 F
% S+ H  |  O6 n4 csetup-plot2

7 {4 z9 g" {" i% e& f9 L- D+ a2 B) A7 Q5 o1 z8 n- U, i
setup-plot3

$ A, B( x/ m; C2 [) ]' [end" N$ y& h4 r3 L& P: L( [' ^

# [& F- L) D& z1 V;;run time procedures
1 M0 K( M) P9 ]6 r* k6 P
3 k1 n0 e  g* E6 G/ s+ hto go
1 z. s" v7 |! i) B
* X. q- E5 Q1 x' K# ^6 P' gask turtles [do-business]
7 u. P( S# H$ d! |5 U0 b+ e* c( _* ^
end
2 G7 y$ @5 R) ~) U" I
. ^/ W: f0 V' r# |  G* vto do-business   r4 t3 z& ^. j! p' v) ]9 j/ j4 Y. O

- x% r2 J1 F. ~7 G/ |9 @8 Y* o& C7 I4 K: c
rt random 360
5 p) k1 t. t9 o, V- @

- }- j# e7 V: ?' L0 R+ \) E' W3 Ufd 1
4 J2 r. b* ?, r
/ n8 J* M: p* D) Y
ifelse(other turtles-here != nobody)[

1 E, t' s6 R3 z. ~& U0 U
& \8 V6 Y, o" i5 l5 ]( H4 o0 Cset customer one-of other turtles-here

2 z8 s# D5 x$ f7 c/ u( z$ H  ?( V
" Q, {7 b, J2 s;; set [customer] of customer myself
1 K. o3 E; {! ?5 g: Y
$ K- l* G, n: O* n( {
set [trade-record-one] of self item (([who] of customer) - 1)
  W% c. K+ i+ g1 X6 ^[trade-record-all]of self
" I. q& o( M, T# d;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% K2 \+ e9 c) g+ ?, i

- }' b4 m: O% b: B  E/ `% x4 i+ fset [trade-record-one] of customer item (([who] of self) - 1)
0 h  H% O- E% O1 m. b& r[trade-record-all]of customer
$ @5 R9 C1 V% ~
" D- o- w) F: V. O/ u! x1 x* I
set [trade-record-one-len] of self length [trade-record-one] of self
# g) W0 r- @" y4 n+ M

+ d! G0 x5 _. m, Xset trade-record-current( list (timer) (random money-upper-limit))
  G  G  p9 m/ ^- T2 z/ G, P

: t. P# P# G4 q* q3 Y+ qask self [do-trust]
* N9 m- h6 Z" F9 R;;
先求ij的信任度" D( w# A$ Z, x- T3 G

6 |$ l9 j# M, @# a. mif ([trust-ok] of self)1 r  ?4 H5 ~9 ^1 \8 ^2 h
;;
根据ij的信任度来决定是否与j进行交易[
" E. p+ b1 ?, p) q8 C; k+ Qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, j. q5 h1 v' B* o+ `
  q3 U2 H! m7 i7 h- b3 N$ y[

  h1 v2 r4 j1 q8 \
7 ~! k3 s2 n$ ~; M7 Jdo-trade

% Z6 I7 |. c; u# i
/ j8 }! A( g5 [& yupdate-credibility-ijl
; F, X; [- S3 j! M9 v- ^# h. z

" _6 t. W2 F! h8 m9 m+ Y0 E7 ]/ {# f: ~update-credibility-list7 V$ ?, P; C- O: K3 i  q
& j* d/ A( k5 W* q1 j3 P

, O) E3 @( a: Q5 h/ oupdate-global-reputation-list

# s$ A7 ]5 r7 [6 s% |  D$ D& h! G3 U" F4 Y
poll-class
# o. X. e, p" d

; N% q$ v  R( d+ Q2 r, v% X) y& T2 Aget-color
- p9 O/ k- m4 j- @" _) l3 @1 r: C

2 D6 [4 l, R3 s4 J( _& Y! x]]
* U! f1 r, I. P8 Z5 K, d1 {9 \& `5 i" h/ x, g; T" h) A: h4 v9 c
;;
如果所得的信任度满足条件,则进行交易& l6 |7 M$ d$ t# M: O# m

) ?) ?; j% u0 r" s[

( E8 o: f: H) o/ j- l+ o6 k+ K5 l% M, [$ M
rt random 360

$ m0 d6 b2 B5 B8 S" ^/ l6 Q9 y1 A$ Y6 W1 I) R
fd 1

4 c, V3 x$ `" S9 s" ^' \
$ g6 X/ J/ @- o' D]

4 J# E% `& q1 s. \! b! p! \/ `4 ?& H$ j2 p
end
1 e5 V/ j! C: O7 z# n6 x2 T
1 ~3 O$ h4 r- ~
to do-trust / B  B% x- @! s  l+ G; G' w
set trust-ok False8 j5 T! K. @4 D5 f$ T* Q

& D, Y" Z4 l1 m8 W& f2 X) W% \4 d, m$ O
" H) p% _9 \2 \$ n, C7 Z
let max-trade-times 0
! x! h+ j' D4 Q/ V4 s5 u0 lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 U5 h, h9 |+ V1 Y( \% h
let max-trade-money 04 ]6 h% P/ ^; e! U6 t  ~& s5 B# J$ N
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- d( X9 }+ p0 J. qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) Q0 @2 r' F* A3 I1 v
3 m# I6 M3 v1 N2 I5 D9 b
* n, f  _2 b9 E+ A; A3 i9 H: \0 c
get-global-proportion
5 ~( B; a6 k- A- u; c1 ^let trust-value
. M1 u/ D# o- a' ]6 M5 |0 klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

9 x. ?3 E  Q# K+ z- Jif(trust-value > trade-trust-value). Q9 }2 M! w( Q+ o' X! ^) V
[set trust-ok true]! ]- Y" O/ g' }2 R" W8 R7 r
end5 @! n! z( V4 N4 Y

" C1 j1 a7 P) \to get-global-proportion! a+ C& Y1 H! T+ s0 L: B9 U
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 v8 b# v2 Y1 O& b. @
[set global-proportion 0]
  z" B+ h2 G; l& _[let i 0
! \  D9 _0 d9 T% J5 ^. z; N; m6 Ulet sum-money 0
+ ^, B+ A4 h% c1 {1 owhile[ i < people]
! h6 U! D! X9 A8 x[( w% d# G3 R& h& J# n4 @" E( t2 b
if( length (item i2 w0 l4 q7 |0 t6 T  |
[trade-record-all] of customer) > 3 )

% [+ z3 h; H# U* c  W$ z9 ~[- }! t& L1 `4 `5 D( a4 `7 \
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 I* q! T! q0 ~( A" J' f- M
]
; n3 }4 \, z4 s/ N* G]3 z" M; S6 p1 R) R9 w4 Y
let j 0
+ J$ n! \9 q0 K! A. h1 Rlet note 0; \/ H* y- L/ g( O! V% e$ @
while[ j < people]
2 c0 N  x* [. m- W6 r, ?[" N+ f' X; t% e. _- [
if( length (item i5 U9 T& a( G0 D5 Z& r& x
[trade-record-all] of customer) > 3 )

2 v+ T+ X- O6 h2 k[  @0 B1 B- T- {+ _7 q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 }$ u, W* }/ F: j% d3 x7 q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' X- Z0 X$ _% e[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' X' i* P3 W: u]
( v# D" H4 w3 V% I- W8 C! r]
* g! }. u/ y6 i7 ?* @set global-proportion note
& u3 z/ w! C: n8 Z6 D+ M: J' V]
; {( s5 Y+ L7 {/ x7 D/ q$ jend
2 p  U! N5 q7 q5 G4 y6 s9 g& p2 u1 W  A9 R( [
to do-trade
# `- E# p) b5 O. n8 K;;
这个过程实际上是给双方作出评价的过程' @: j. }3 ~7 z) X1 R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 C  ]! @, n5 k+ f- ?8 ^2 mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ K* v+ S6 e# s* j4 }set trade-record-current lput(timer) trade-record-current
0 a! i1 H) q. r; f) ?; M8 R;;
评价时间
# i3 y( P# O' e6 T2 h- Q$ A; @- g* xask myself [
" q/ L$ ], V! p& P( ]$ i! Q! U0 ^# ?update-local-reputation
6 Q( l9 z. L7 G# G' d2 xset trade-record-current lput([local-reputation] of myself) trade-record-current
; K" e7 O( @; c/ J0 {]
9 f) `" b; I2 x- xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ r1 H) t  |* q1 D
;;
将此次交易的记录加入到trade-record-one
) C5 C" \% F* M2 N; C( Hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 R5 w* z1 N* H% nlet note (item 2 trade-record-current )8 D$ y8 R- e" E- D
set trade-record-current. b  m1 x! w8 V4 j+ I" l
(replace-item 2 trade-record-current (item 3 trade-record-current))
6 _2 C. K: H1 V2 F: w
set trade-record-current- b6 K- |2 J* x& o
(replace-item 3 trade-record-current note)
5 ~2 w" V' R9 O& R8 |) @9 s
/ O' a8 I+ E( i) G" [0 n: y3 r

/ R" d+ r& y5 O, Zask customer [
% W) X  V/ g) tupdate-local-reputation  k: M1 C" d! [( v* b, m
set trade-record-current
( p) M  W. Z5 c  ^" T(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. T& C& B) K. c. Z, q$ e  t]
9 |" c  }# ~5 G5 l4 [) J5 h1 k; C) ]: q. G7 x5 |

8 x1 W! D9 y. K4 C3 W) Sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 T! q4 n( ^, g

4 r  K  b6 {- ^: f1 X! pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 x: Z' C7 [% N
;;
将此次交易的记录加入到customertrade-record-all
0 B* r! r5 b$ y$ H! c+ [' fend8 {# I" i. Q+ I6 N* z

" w0 r7 r5 |4 l! G6 x$ Hto update-local-reputation
8 v6 {% s, b. m/ ]) W7 d  iset [trade-record-one-len] of myself length [trade-record-one] of myself
: O4 s4 B2 \6 M3 x1 O* n3 H8 O. x, ^, v' \6 g+ X0 N% c
* u' P% x9 m; T6 X: P" ?/ v9 w
;;if [trade-record-one-len] of myself > 3
& W# N  `: B- L' C1 a: I' t, g
update-neighbor-total5 b2 B+ i2 f0 O0 i2 U3 ?
;;
更新邻居节点的数目,在此进行* m8 n, ^1 ?1 d
let i 3
0 ?8 y* i2 j; J8 p$ j$ |8 Ulet sum-time 0
8 V/ K2 w4 J3 A9 c. jwhile[i < [trade-record-one-len] of myself]
! N' p3 M& |& w  e# H* o1 R. o[9 ^, ^4 {% J- ?( J9 ?
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- [, b+ n; d  r3 S* Bset i
: P0 \6 k/ D6 j  s7 j( i + 1)
+ _, [" j: Y2 K) L1 g2 k' M
]3 d9 z7 j/ B' L8 L) L+ E. I& f
let j 3
$ O" A& W% D7 `+ Hlet sum-money 0
4 I$ ?4 [% q; \, Twhile[j < [trade-record-one-len] of myself]4 y3 p' o7 _0 o9 x2 J! U
[
  @8 C: g2 v  p* `4 `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)
3 R! h/ d+ }" l, Uset j9 @* _# ]& n8 G. R! m2 }  [
( j + 1)

0 E& ]) B: n0 x2 J0 C& h, I]# s- s, X0 f& a0 I* g$ l- \( h! ~
let k 3
6 k. |. e9 V5 N- Wlet power 04 ^1 O/ Y7 \) ~* N! o) M3 U& u: l
let local 0/ U. E$ Q% V7 @
while [k <[trade-record-one-len] of myself]
* D2 o7 y( a- F2 E$ w[
7 G" f2 G% A0 C4 C* m: ^! v( z- iset 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)
5 ]* h2 z* ^" B% Z" d& L) k' ^set k (k + 1); e8 z6 C0 Z4 L$ h5 @" G  X' z
]
: {' ?; r' R8 Q) vset [local-reputation] of myself (local)
2 ~% ?  m" m9 v+ aend
, P7 h5 s% i1 F" H7 F/ _) D6 R0 O5 C* w2 Q
to update-neighbor-total1 q2 n+ _  c! {. H4 m

$ I6 {0 }& f6 a- v1 j, Xif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 a  W. I+ E) p: n+ q
0 Z6 n" ^; [+ Y8 o% q# P9 u

0 @9 x2 j: S) kend4 a4 }) O$ b0 e( [

5 l% n/ D3 h5 C2 V' z$ ?- t/ l) S" |to update-credibility-ijl
* L$ G! G3 Q6 S3 j: `" l7 d1 j- `9 S+ m% p
;;
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。
; N& H  ^: u0 l) j/ H. clet l 0
9 L+ L+ I% p$ C9 _8 Iwhile[ l < people ]
" O3 f; m4 ?  X% T8 E;;
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
0 J+ A: _' z& _2 c) t* I6 c! G" e, _[' c4 V* o) T* j, {$ @# x/ C
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% _* G8 d- p$ ]& [' P  E3 Oif (trade-record-one-j-l-len > 3). w0 I0 z8 k( @  O' D+ _2 r
[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 o4 c/ {- e. K- H/ q: O
let i 3
: v4 l7 H0 k$ Y# X: B+ h# `  Tlet sum-time 0
! U2 Q( v. Y; A- w  Fwhile[i < trade-record-one-len]
  g* B7 }; I% l: S" h[
6 @% p( r% W( M1 g+ ?1 Kset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# V* a2 m/ q; \$ A; l( h9 [set i' q1 U& V- l; k
( i + 1)

/ ]7 g" Y- U9 R0 G]
3 |% {- f$ s; M, C8 r% n8 mlet credibility-i-j-l 0
; O' r* r5 O% e* E( S) @;;i
评价(jjl的评价)6 X$ Q) i# L5 S- z
let j 3
$ z) w! n6 y) p8 m/ qlet k 4+ I. s) C. H$ c8 n& I# d6 n5 [! W
while[j < trade-record-one-len]
0 |/ r3 |& s5 J/ z: }- C& @# n[+ P/ _! y; i6 E! F: j' O
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
0 F% e* w# A9 {  iset 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 {* _' x. t1 V: C9 P; f
set j
& v0 n: j6 G8 E3 Y0 ^( j + 1)

/ s" |  }4 c. D) H$ b9 w0 {0 v4 Q]
- \# w! `% [% y8 C! qset [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 ))
& D/ o$ l# X: T7 T% b5 |
  P, h/ N* T, c7 G9 w$ O
4 \4 K( H, L2 r9 o6 R! M! x* |
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 f3 F+ @& u8 x6 u
;;
及时更新il的评价质量的评价
& H8 ?  r% {. [: D! pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- P9 T$ \1 t! Z  ^; G/ dset l (l + 1)$ o/ h8 W$ t3 r0 d4 S
]
! e) Z. _3 i& H, m! iend
9 c  r6 _+ D, ]# `# O3 h& F6 h4 Y
5 j" i4 P& `4 G" Jto update-credibility-list- l' `+ Y3 ?5 S  N  m% O
let i 0- K) x' P; A* l: b+ S  I
while[i < people]  w* _- a- y5 s3 \5 w: Q
[
* m, c, z' @9 x; _9 ^, P( alet j 0  W9 Z3 ~  e2 z, z2 y! E
let note 0# X0 r. b* Y4 S- G8 L$ y0 }
let k 0
# c) ~  o; S8 m- W) s7 N;;
计作出过评价的邻居节点的数目
5 f3 ~& g" H+ \0 q/ ]8 ]7 ?while[j < people]! Z5 J. g# B" d5 E  B- k* f( T
[
2 p) R. N, A0 L2 g+ w6 qif (item j( [credibility] of turtle (i + 1)) != -1)
! \4 `: t' f6 i. e+ I;;
判断是否给本turtle的评价质量做出过评价的节点
$ D4 ^' p+ n+ E3 K  p) y[set note (note + item j ([credibility]of turtle (i + 1)))
. V$ i3 J( e$ A# U9 F  F;;*(exp (-(people - 2)))/(people - 2))]
3 I) y' m( H6 E* s
set k (k + 1)
$ P$ ^7 Q& m- X" o; r: l/ k7 n4 k5 F]5 f( J! F! ^9 Y' l
set j (j + 1)& N$ n* [5 r1 p- I+ B% o
], H5 u! }$ x: l9 p
set note (note *(exp (- (1 / k)))/ k)/ Q+ F7 J* ]+ a+ z6 {
set credibility-list (replace-item i credibility-list note)& z  J: k' f% C) U  n6 i
set i (i + 1). e+ W# r4 `2 L' v2 D) L
]
( p% n/ A: Z2 Q& D  I3 tend2 N( j1 o' ~" s% G% w: }+ a  C* i

9 ~3 Q/ r8 `! y  `/ E! j, i: j7 R* ?to update-global-reputation-list
& {) g3 C' E( d5 V) ~- E( l# |let j 0) o/ A9 T$ |4 f" S
while[j < people]
, Z: z( k% ?- O7 i[
4 z1 F/ |/ b) {* z3 @9 l4 Zlet new 0
& n& U* o- T, E6 r( F- B0 |;;
暂存新的一个全局声誉
! T, e8 k( {, A" Y6 Y. e" X( Q. nlet i 02 a* M% d+ ^# S0 k0 }' L
let sum-money 0
2 d* h" @/ b- c4 v7 A" }let credibility-money 0) Q4 G1 a/ k5 l" f- H
while [i < people]) _  e( x( g7 z' T3 v
[& g2 j2 D& k8 L. P
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): I% x4 O: s5 B- ^
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 x0 F4 f( O% w* P, pset i (i + 1)7 r: e5 l& Q3 X2 [% m) s9 X$ t
]" u3 F! ~& A" h; O0 U
let k 0
' s* A9 N' A8 X4 ^  v- R. H, ulet new1 0/ ^9 a; r, ^/ k: @3 c; k/ e
while [k < people]" A: N9 y! A, O+ b; v
[2 n/ T5 f: S2 A8 J9 X
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)
' z, g* z  K  P/ ]& g/ vset k (k + 1)% X) S& l; Z+ n
]
1 y: ^# T; E$ D: r$ Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: l1 g3 ]% b5 A' l% E7 N" U- Eset global-reputation-list (replace-item j global-reputation-list new)2 p; s! o3 F+ A: Q
set j (j + 1)' f& s& d7 y6 K
]
9 i3 ?: ~- m6 q# S* F2 }end
7 F' O- V9 P4 s; g6 ~
) ^0 f  X  r; Z/ t. r
7 b7 G% {" @' I) }0 z7 I  F1 o9 ~0 D5 R/ E1 A8 I0 J
to get-color1 ~( Z, I  v6 C; j5 L& i$ T

' b  {4 G. O4 ~' J. Kset color blue

0 H/ _# q! H  E3 \end/ {' ^6 q- S6 E. I

) Y; s8 g& R1 k" H- I" Gto poll-class
8 D% |% t8 ^% jend
" B' C! w% W) d- x1 {" u
. U% f/ X) m( ?. M+ F7 v% Jto setup-plot1+ }+ |6 U: }# C

1 u% Z% f" g; i3 M( rset-current-plot "Trends-of-Local-reputation"
/ |* f' |8 f3 `; j  B, f. k
9 ~/ S* Q5 f( N( p
set-plot-x-range 0 xmax
8 B- f! Y( I2 w$ D" p0 h: C1 K2 b$ i
$ `: b4 w+ }- B
set-plot-y-range 0.0 ymax

5 E' _9 }( ~. Z( eend
4 U6 E) \) {9 m6 j: Z! @
0 H3 F: b/ O1 k# s: g6 Sto setup-plot2
5 n# M: o" }3 J- x& s! R1 l  f0 t$ P. s3 B5 U: Y5 n& O: s$ v
set-current-plot "Trends-of-global-reputation"
- n* X) l. D, \$ X" C" W1 r$ @
; h! d+ h$ R) @7 T: ?" l) o& n4 R
set-plot-x-range 0 xmax

5 {; a. A" Y! }' D6 E0 l- \1 l5 f$ g% w5 t/ L5 \
set-plot-y-range 0.0 ymax
# e& c8 H0 `9 R) O# U0 N/ d! ?! m
end
  P' Y, [' g$ v. r" ?1 p8 w- N& u5 u
to setup-plot3
, c& w( J" n; |) P
" _! m9 g6 B6 U# R' f* w, Lset-current-plot "Trends-of-credibility"
' p; E' y  q# ^% x$ B
& D% E( p$ J1 d/ f8 e
set-plot-x-range 0 xmax

% w; s$ r1 T* _$ X& d! u
5 V/ Z& k: S) p# n, cset-plot-y-range 0.0 ymax

8 l! s  w+ a) R/ Mend
; o, R2 ^% Q7 y  x1 F7 x  g+ k" A9 Z" _4 S, w9 \' m
to do-plots+ r, R0 j$ e, `. `  A3 l1 B
set-current-plot "Trends-of-Local-reputation"
, _4 t+ t$ l* b  [% lset-current-plot-pen "Honest service"
. W" @! |! M/ l# p0 Tend
% _8 ^' A6 c! l# _, D6 S: n4 ~4 E* X) G. L! S
[ 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.0 F; h" r( l" A; w/ _4 a
! Y3 d' w2 r5 X4 f( c1 o0 ]% U# y
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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