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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:8 O. P1 g0 W8 D5 t5 {. n
to do-business
7 I5 K' h; ^3 p/ }- m! J rt random 360
/ m3 i- o* g' M fd 1
0 Y( ?) Z1 A3 M ifelse(other turtles-here != nobody)[
  K& A  V4 x: k   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.9 |( |1 R. k* V+ y% x( v" N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 e- o6 U' ?0 @$ e9 e, c  y. }   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 j; H- A! i5 C" j. M, H   set [trade-record-one-len] of self length [trade-record-one] of self  s' f/ b+ M3 _& n. U. {; C# a, d
   set trade-record-current( list (timer) (random money-upper-limit))
/ @: O* z- {1 F5 m& ^2 w& ]6 c5 M& H1 a
问题的提示如下:
5 }# i' N, @( F/ _+ @/ |$ H5 C
5 ~% p. g7 |1 H6 l; o: aerror while turtle 50 running OF in procedure DO-BUSINESS
; F% ]% Y5 `+ p  called by procedure GO
5 I% j$ Z. z$ x9 ?( C" Q" eOF expected input to be a turtle agentset or turtle but got NOBODY instead.
. n+ E0 _  o7 T, e6 ^' n
(halted running of go)
' L+ y# L+ K5 ^  t1 b# N9 l# l$ k+ \# d5 h1 T- Z
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
% x, c$ ?9 w0 x( a8 o1 }- d8 Z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  v- I7 ~6 `! I8 Z! p1 p9 L3 S
globals[
: M" l4 F- ]. T) W9 M: kxmax1 s% j! P' N4 f) y
ymax
" a8 E5 K+ z' {; a  ^' lglobal-reputation-list
0 D$ H8 i! L1 Y) u$ j  C' A) o& v% J/ j1 t4 L) _
;;
每一个turtle的全局声誉都存在此LIST
. b% {% p9 g1 W2 ~' x8 ccredibility-list/ u  c( ^3 W' {6 U
;;
每一个turtle的评价可信度
" Z) s7 y) e$ h1 s! Bhonest-service9 x+ V  M: j! H) U
unhonest-service' i& [, i: X4 k' Y2 l( X7 k
oscillation8 x# Q% {6 L. p% E5 G
rand-dynamic
, W. j3 n6 t4 ^( @9 g/ X]- `) U) t( a, y3 {8 X

, m  H1 H6 C& `( W; Kturtles-own[
8 a5 J3 c, `, z7 e3 ~6 u/ \trade-record-all
* D% C4 C4 t5 h;;a list of lists,
trade-record-one组成0 s9 z3 L! v9 J; [: J6 s) F
trade-record-one' k' x/ ^$ M' N5 v) n' U. K
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录0 n) X  Z3 {. K& J/ F
! a% n3 W! y9 V" K3 ^: v
;;[
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]]
% R7 M7 L; j; a  }% itrade-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. o) i# N1 H2 [$ h0 \, Icredibility-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
9 y4 M) ?$ N! N4 [; gneighbor-total* T  U3 a; u2 y9 Z
;;
记录该turtle的邻居节点的数目3 m# L4 M( S4 R, ?; l8 f4 Y
trade-time
! u9 r1 j, M4 S' ^. Q, E. ?;;
当前发生交易的turtle的交易时间
' `/ \2 U! @2 n3 x& h$ a8 G5 kappraise-give
. {$ C; K' }* ?  {) M# o; Q;;
当前发生交易时给出的评价9 c: T9 K7 d. v2 N5 C  R
appraise-receive
0 w; p5 G4 o8 n;;
当前发生交易时收到的评价
  w8 }" P% r2 A; ^( Q! u8 dappraise-time. E" s4 H! i+ w. Z$ v* _# ~
;;
当前发生交易时的评价时间) V! H9 @4 M! E0 j& i3 S
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
& {' w1 |% n7 L' Gtrade-times-total/ R4 @4 @# ?0 Y
;;
与当前turtle的交易总次数+ g' h- k; q2 W
trade-money-total$ f6 j0 m/ g$ P
;;
与当前turtle的交易总金额
& Y4 `/ E% R( T% L9 Ylocal-reputation1 p# O8 @# a$ b# q0 i, k
global-reputation
- |* S. m# x# W2 ~# fcredibility' e: t8 U& F+ I# a) i
;;
评价可信度,每次交易后都需要更新) t) J2 ~5 L+ [3 I1 ?+ \
credibility-all
; [6 m; B/ ~9 c7 c1 `9 u% a- p  U, 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+ Z+ s$ V. [! n: s0 W) B* u5 O
6 M+ T4 R- U5 o, Q( e" b
;;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
) c- F" U' L4 \% z( [& b4 B- {' Tcredibility-one2 _. H% L6 q7 h, z9 F# B
;;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
4 L' [3 q- b  W- C$ Z: ~global-proportion
  v* x9 P5 H& wcustomer1 E. \" f2 ]4 Q' Y; y
customer-no3 W# u. k& U) K* Z
trust-ok& }0 g( ~3 D/ B
trade-record-one-len;;trade-record-one的长度
" ]4 I, y1 i6 \8 |0 {5 p; j]% U7 ]) {& p4 \% U- }8 L. n
7 g8 T4 T. A  D# ^3 N/ ?# s1 A5 T
;;setup procedure
! _! f! \4 f* b) P1 _! x. `
. U* X4 M) w7 c+ O/ yto setup- [4 y9 z5 U% g7 i8 h/ M
5 W2 h/ n) T* D2 C
ca
, r3 i' R( a) |! m0 F

7 o& Q: [6 \' s' p+ vinitialize-settings

1 |2 A, @& V& c* `, T6 m, `( p
8 g( |8 K7 k* o* o; F% ^crt people [setup-turtles]
& }7 X6 x. n8 Y/ Y) v( n8 h" J8 |
3 W9 D5 \7 n, ]) }
reset-timer
. ~0 y2 ]. S4 {& w9 ~
" Z3 b# z$ }3 Z5 w; n5 ~  Y' `( M
poll-class

  |3 n8 E/ g: y* [" z7 B! f0 @* ~1 C8 Q/ V. ]0 G' Q5 D
setup-plots

+ m9 |, F5 f. k2 k; z4 r
% b/ E& Q' p$ zdo-plots
# M; n% @3 |' J. M) a9 X
end/ M/ t9 ]' y" `) U+ M: l

" d3 o; ^' U" A+ vto initialize-settings$ u5 E$ p. b7 y5 i0 q

  ]7 w  w0 @9 W$ M- m2 }2 {set global-reputation-list []

4 F- Q" L# `; z* ~6 Y/ k
0 s3 h$ l/ l& k/ h5 A: b/ Dset credibility-list n-values people [0.5]
& L2 }1 Z  |: F- q, d* D* f

& ]' Q. m9 W1 D9 s7 R" O* Rset honest-service 0

2 t$ p0 e' R' l# k; y, g* _; c5 u+ M1 n6 H0 ]6 D
set unhonest-service 0
) A4 `% S+ e3 }

9 h- ]& W9 y: [& }; G6 P2 zset oscillation 0

& v0 h$ C7 Z5 S5 Y
) ~0 D# O$ W7 C) N1 pset rand-dynamic 0
' \3 t2 M6 r2 S: t/ e7 d
end
4 U( q6 w1 K( b4 I5 z
* V- B3 \7 J$ P2 {% k8 Lto setup-turtles
1 K# I, K+ U, I* C, Bset shape "person"
6 B+ L' P  `6 ?2 n4 l0 u1 t! f, `setxy random-xcor random-ycor1 K8 t1 a- _/ A5 e. v
set trade-record-one []
  s, R8 }4 I' v
( f- F8 A2 W+ A- p; E
set trade-record-all n-values people [(list (? + 1) 0 0)]
0 K/ B' o0 X5 V2 [7 g* @6 K

; ?7 U, h" P: n# }) d& I6 R$ p% g. cset trade-record-current []$ t7 E/ q( X1 i# s& F0 ^8 z+ K/ {
set credibility-receive []5 B% i% Y( C1 |# s5 d
set local-reputation 0.5
: D8 \# R5 ^, S# }' L& L$ t# z8 xset neighbor-total 07 q, m. x, e) o2 ^+ W
set trade-times-total 0
& G5 B2 @, }& h$ H' l9 R- Vset trade-money-total 0( p) ?9 K* V- r( k* d
set customer nobody( b8 K, ?. H9 w
set credibility-all n-values people [creat-credibility]2 h2 l( L6 l+ S5 P
set credibility n-values people [-1]
) ~$ Y4 r4 l) _) Mget-color
  W3 ]- ]% [5 b8 K% P( A+ ~

% p& A+ P+ \. Yend' v( l2 m2 Z5 Y! d' Z

( c2 W0 Q8 B5 t. G( nto-report creat-credibility3 C' ~  x" F- B3 d
report n-values people [0.5]
- _$ e, s# o6 J  ~  q, D+ v  M* Tend( l; ~1 |/ Y6 l8 k

1 J) l2 K' X" L4 B6 W& bto setup-plots! G9 V1 e/ l5 m7 Y) m! q

4 o6 h- {9 ]3 G- S: B7 e$ r5 xset xmax 30

1 q" R& d& O# q4 I& v; u) o2 k* `# o5 G5 X; A
set ymax 1.0
+ {! L' Y- I2 I$ w
# p3 ]. L+ [' O( ~' T9 S4 N
clear-all-plots
7 }4 H& N3 W: V

3 V" P  `. m8 }  Hsetup-plot1
4 }5 r2 T: u# h; o
4 u2 A5 n: r/ c9 E3 t# c
setup-plot2

5 G5 m4 Y$ j! \' a: o* |+ j  w9 |" R& B( S7 p
setup-plot3

* z' s9 K. _) q( Send, r5 k6 f( p( e- s, L5 W

3 Q3 [) H- A, r  e;;run time procedures
$ j+ c5 P- s( c6 n5 X
9 ?- [) ?$ K, M1 Tto go/ |/ c) Y( C( g

: l3 D* c/ J) D% Q- Z$ N/ Wask turtles [do-business]

- V: \" B3 P  X/ L9 f: vend
$ ^/ P! M* J5 x1 J- z7 E/ ^
/ n$ h# ]5 X: o/ kto do-business
8 g6 h8 u$ H% C/ L% a+ ]5 _
& M  m! [) U. j% ^$ J0 r0 e- K3 w' i

6 [: Q! P: Y8 }- m- K. Zrt random 360
) i9 o. v; O# r( C- a3 ?  C* I

- f- J, s4 y' J, U9 F7 Ufd 1
1 P$ \% _0 U+ W) [2 I

8 i+ y1 w  Q' @! @7 Qifelse(other turtles-here != nobody)[

: u, p- D( ~/ Y- K& v( A3 i3 U# Q4 \
! g" S& Y7 c* e* C% Vset customer one-of other turtles-here
" N4 B$ R& T1 ~& z) `

- g& V1 r  C2 }  T; y;; set [customer] of customer myself

5 A) j5 N7 z% r' ?' a6 Y
5 ~" j6 V' d& S' U, dset [trade-record-one] of self item (([who] of customer) - 1)' Q0 l' C9 U% p" w
[trade-record-all]of self
9 U' t9 a- z" V! q3 a0 _, d;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* ^- H$ m+ o4 x# v/ O$ p; ]7 k) ~" @. f) c
set [trade-record-one] of customer item (([who] of self) - 1)3 _; ~$ s1 f7 S. O
[trade-record-all]of customer
! X5 K7 b) A& }

. b# _4 o3 j7 a* n7 Z$ i9 Zset [trade-record-one-len] of self length [trade-record-one] of self

" [& |) O  i& q: O* V6 R$ |+ p' t7 L, V9 k) }; U/ H4 H) I. F" i
set trade-record-current( list (timer) (random money-upper-limit))
/ Q+ U  V' T& U- X- X

2 A8 [" ?- @3 u" Yask self [do-trust]: Q( c! f' a* \$ M9 \, X
;;
先求ij的信任度
! H/ m3 l' B: }, ^! }) a! w( _6 f2 L: W* w& H: Z& [
if ([trust-ok] of self)
# W' X( j6 c" Q) L+ U& \3 @;;
根据ij的信任度来决定是否与j进行交易[0 b* D, e7 I& a4 g
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ [; c5 b' W. \5 ?4 S+ K

8 ~  G3 C' m% z! e9 x[
/ x/ a! Q: K1 {7 v1 v
' W4 Z# ^) i9 \6 j8 s" `
do-trade
8 Z0 J9 i' z( Q2 F! B
5 H: n) `$ p  z5 I$ ?
update-credibility-ijl

9 y5 ?# _+ H/ P5 o4 a3 [. \2 t
+ Y8 t) H0 F$ F" `5 _. y) @( Nupdate-credibility-list  I9 ?! `  A. L5 C+ Z" Q, [3 n
/ s/ t2 _! q1 z/ Q) [( N6 ]

) Z9 j( V8 |2 Fupdate-global-reputation-list
* W1 T2 d% W, r$ n8 p: _
4 s7 V- h  A5 I! |0 t  }# g+ O
poll-class
- Z" W2 g3 A1 h. G" c- V9 u9 p
/ N& E7 b$ k! ^
get-color

; ?1 s- j3 F3 J* `! l7 A1 V
$ U9 \9 s: T* e2 B. e" X# N]]
0 @: U' }/ [3 @* S
2 Y; b+ G. q1 B# B9 @* w9 R( ?;;
如果所得的信任度满足条件,则进行交易5 A( e; g; B8 m6 }* M7 T
& y* h  T1 b# w" E
[
/ D# {6 G! a" ~8 d
9 v! ?7 z4 R1 A$ u7 v0 h) o
rt random 360
: @/ J% h+ M5 x  o/ u

: X6 g) X- X6 E. J8 j* A. s0 pfd 1
/ ^! @: a* Y- k% v1 ?

* N% y" o- V5 {: n" V. \]
' S2 j1 B' c/ i/ k" J7 {
/ X; r, o! }, L0 B
end
& @: l# Z# z: `" X' O: ?2 |

3 U7 w+ m" q, ^6 Ito do-trust
  E+ U3 |( Y, \0 t& {: sset trust-ok False
, y+ K6 I9 h3 V9 O! x! X. L: }
4 k2 o' d5 _! ?% p& t6 g  r7 j6 A6 ^

" v# O. p9 b2 Ilet max-trade-times 0
3 v9 p3 E4 @* mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 O' R; {9 D- }( z. x6 B/ C, ]1 Y# ?
let max-trade-money 0
1 V" P1 d3 V) m9 Uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 c1 h5 K8 y2 K+ m
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 b/ V  R' G: N( f6 s- _' B: h
3 E+ ^1 b& ], g

( [3 `+ g2 T4 ]% kget-global-proportion- v+ `! L: o4 I( I# B" n/ V7 z
let trust-value
+ v/ ^+ W2 H; O) Z/ s# @. l# [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)
0 N1 t/ v8 U+ [/ A+ Y  A
if(trust-value > trade-trust-value)" o, i' J& i8 a
[set trust-ok true]
0 o( O% ~  H/ ~1 U# Kend
0 [5 Q: d4 n' }5 X, {% I% R' {. ?9 g* Y- {0 k4 S
to get-global-proportion
3 n: \) I, W+ y6 @1 Z4 H! p4 Xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ L# m8 l+ O; q* n/ k* @5 _/ P0 K/ l[set global-proportion 0]5 C) A) U$ [0 |0 M) {9 ]( ~( q
[let i 0! m3 k$ Y$ m, Q4 P6 z7 L
let sum-money 0
; O, X7 [8 W$ R' t: [7 r" j/ Dwhile[ i < people]0 ~9 M# d6 P3 ~. x2 H
[) L) n5 C7 B" x+ @5 J; u1 ~# R
if( length (item i$ v7 ^! \9 R6 Q" \% \9 K& ^0 I9 W
[trade-record-all] of customer) > 3 )

  b" R  N; |( W; O1 w3 H( g- T[% n: t$ I" w( X0 ?
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) ]6 ]7 Q& l! D# e& U8 G& p. u
]
! u7 U3 l& s: @0 }5 []
2 Y& J, ~0 V  tlet j 0
# {2 J& P: L) x8 Q" \$ R, y1 [4 Hlet note 06 i" J$ \" H# ?% Q0 y
while[ j < people]4 d5 o) D# J, D
[4 k2 a  ~' s& A, u+ U# i
if( length (item i
; F+ q$ b- F2 n- g[trade-record-all] of customer) > 3 )

  Q, O: Z& w& F2 Y8 N; Y; a[
# c5 r: a8 U) R$ r; s' z) Q: uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! q% \, I9 `8 Z. p[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 x& C4 Q) b8 |3 T+ F[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ `, {# m! S" ^5 j]
$ s; P/ n& Y+ ^  N/ R]6 }6 D3 Q- \4 h+ w3 U
set global-proportion note
! I) J  {" B( x3 ?6 j$ p1 ]]
; O/ ^! w1 T" C/ j" i/ Oend
1 P& A) {8 C4 }
: F2 t# q; G4 f/ A3 I0 Tto do-trade8 d: f4 T# S2 X. \' @1 z, P+ c1 S
;;
这个过程实际上是给双方作出评价的过程+ o' P# ]* [6 e! a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; b. e  G' L% G9 J6 U: Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. W5 J1 a+ u  Y" ~& dset trade-record-current lput(timer) trade-record-current) Q5 w, e  G! }; y9 X% ^
;;
评价时间  c6 X$ z8 o! o) |7 O& H
ask myself [6 P1 I7 N0 W$ d; X; w/ P5 Z
update-local-reputation; o! a+ C' ^2 c% a( Y8 n* `8 F
set trade-record-current lput([local-reputation] of myself) trade-record-current- ]. ^6 U& X2 V5 E& n( t
]
* a! G4 A' X" W: e+ p2 L8 yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" d$ l% b/ J! i;;
将此次交易的记录加入到trade-record-one# g6 A7 d. |3 F$ E
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* @4 x8 _5 s, c. o- _/ [7 i& S& z/ glet note (item 2 trade-record-current )) T+ X: ~7 q6 z2 T# n
set trade-record-current, j4 V6 P9 u8 }5 ?/ J% B. T) @0 F
(replace-item 2 trade-record-current (item 3 trade-record-current))

! @2 m& x' l6 t- I2 K7 c! O* Uset trade-record-current: U7 q- {) t- S, b4 i4 k: ]( }' V
(replace-item 3 trade-record-current note), v4 j1 M- a, J* }: H

$ f+ x9 z5 u3 ^* ]

* M1 Z* |  N  E3 Z  F; T4 G, `) |ask customer [4 c5 m" G7 b! }! T
update-local-reputation% ~0 }: H9 t1 ]# |' G6 l; M
set trade-record-current
; s4 ^1 D% B. d5 [+ F0 N6 {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ X# J0 Y% F# R4 i6 c6 s6 ^8 P& K
]
- \1 `" Y- ^. I' |; a8 d' H% K
$ N, K$ o) n" p& ]

+ ~" F1 ]- i: d8 bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 E" l' K/ w0 ^& L) M* X9 G) z

% c; Y* X8 `# U3 i, yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 k. J8 H3 @9 k/ O;;
将此次交易的记录加入到customertrade-record-all& I( p( Y0 H! g9 j' P$ G
end3 T( y4 J0 O# N0 l' A- h

8 [1 M. O& s4 e  W9 Q; r. gto update-local-reputation
! g( r+ k6 |% Xset [trade-record-one-len] of myself length [trade-record-one] of myself
8 S  U$ S% q* c& ~3 F
% X+ L1 {& t7 X6 }0 j" V1 N. E$ N/ F
3 V) A# ?" r# r% n6 n/ o;;if [trade-record-one-len] of myself > 3
$ }" _) P' b7 ]/ Q' l: O
update-neighbor-total
+ s) h. N6 k1 s# c; t;;
更新邻居节点的数目,在此进行
6 ^4 H8 T) _8 Y* B0 D3 M- R  f3 Q4 E5 Mlet i 3
5 S# V1 O# P- S. L; v3 O  plet sum-time 0
& o% N: `' {' _* vwhile[i < [trade-record-one-len] of myself]8 |+ W0 _! c) N1 \* I9 ^
[
$ {- ?# e2 m- w. `+ ^, q# Vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): F1 y$ o4 k, i& O) Z
set i
/ m: g3 v! m/ o6 C8 d( i + 1)
6 k% d4 f; c' V. _2 k  S% n7 b
]% [( w, e7 {* H1 c$ g- y
let j 3
3 |5 {) X5 y) W8 z# alet sum-money 0
$ z  o) t$ h  V/ J( qwhile[j < [trade-record-one-len] of myself]
' u- N1 T( r# H# q- R! R[
  [, @. f8 N! w6 j' x( oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
" n: |6 l- z3 Xset j# L/ D2 _& v( Z& h% Q& d" q& v. Q
( j + 1)

- H* @0 j: o0 x& ~]# l& ]2 d0 X( ^; S8 z; v
let k 3
  h" ~, d: [8 c8 ^9 D0 H2 [let power 0& F6 G" P6 A/ w9 N/ r
let local 0- _- A. A, X2 [4 V
while [k <[trade-record-one-len] of myself]( W0 {& h# R1 ?8 ?. J; _2 s
[  O$ s2 C  _: d# ~
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)
4 r2 |' B) J8 X; n' b: Lset k (k + 1)* P  i# u: D' v
]- W6 H4 e5 O* }, U* ^3 t) a
set [local-reputation] of myself (local)
, p+ d* v& m0 m+ Qend( G) @8 G& P+ C& s

$ X! h' C, f8 f5 D( Q# l$ tto update-neighbor-total
3 _# W/ H% V/ k
# f3 |0 v1 A! Oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! @6 ?; E* Z$ C! G  I& _2 R$ a
- e: S9 u5 f0 C; O; f; ]8 y4 s3 r
; ^* b: }* T) Y0 ^" @$ A% d
end# T' `; n* N# }& L8 ]

  j2 a4 L8 F% ]- n% G: r/ eto update-credibility-ijl
) \7 P* y, U# Q& ?1 Z
5 g$ Z) [% u* {2 A& c! g;;
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。& B2 K' ]$ g: }3 R; {0 f8 ^
let l 0
6 o( k6 i4 T3 j/ {1 h: I+ o7 `while[ l < people ]
/ w( t! Q0 F$ 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
# u9 @  ]3 C2 |9 N0 @) Y0 n, e$ {  ?[
- ?- }4 G/ L5 k7 w! L" tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ l. i0 w$ p' \9 n" h" jif (trade-record-one-j-l-len > 3); u  K4 L6 E" z
[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-one1 E9 I8 b% y  ^: ^
let i 3
" U8 X8 P5 `" X/ Z) Mlet sum-time 0
' Y& R- Q9 j4 ^+ K5 g! E9 U: z5 F& bwhile[i < trade-record-one-len]
3 t/ S* B4 a& C$ \[( W, F% h; N" Y2 q6 U
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  G# I+ b( w% b, N
set i6 g" O8 B$ h) d, D  J
( i + 1)

7 u8 x, q. L1 p0 k]
6 r7 e* o$ G1 v' ^5 }& R7 Y% B( l* S$ Qlet credibility-i-j-l 0) {% Q0 z% t, t+ N& w6 @. L) d
;;i
评价(jjl的评价)/ R  T  }3 i' w+ O
let j 3
0 {; C- n" i3 B2 Ilet k 4
/ U$ z* i% J2 D# y! Nwhile[j < trade-record-one-len]0 F5 W4 m  F" k' r$ W* g% K, ?
[7 s$ A( E1 \2 [% a
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* G1 G$ [+ t& P4 I3 R
set 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)% d- `7 K2 y: J# `& v$ f8 C& j
set j
( w1 K5 i) o' R6 M1 d. s& ]! u( j + 1)
3 ?( U3 l$ T  q+ z6 _& q
]
. M: H" f: I$ N3 ^8 y1 iset [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 ))
7 \* P4 Q0 _  [
2 e5 q% I3 _, a4 R$ R$ \2 t
* i3 z2 F) O# D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 o( z2 [9 d5 K' y2 J1 `
;;
及时更新il的评价质量的评价- S0 d3 @# Z" q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 h' F; i' G9 n4 qset l (l + 1). A% ]: A) p+ h
]1 F% W6 I8 G+ S4 ]2 ^3 I
end1 @5 g9 C. x  Z' F6 @: f
" a( K2 z& _' K+ ?* D! K0 V
to update-credibility-list
9 e; X8 @8 `7 Q5 t3 K$ Jlet i 0
' d! b, w. k+ h# M( w4 nwhile[i < people]+ q$ y% B5 ?1 l7 E  n* Z* @
[
- [. N0 Y/ l: {; S$ [% Mlet j 0
" \9 x9 _- @' |! [let note 0
' k3 M9 c* u( I0 R( b  z- f! rlet k 0
( H1 L8 e. C% ^' P/ F* f" @' _;;
计作出过评价的邻居节点的数目
' A4 {) W" _6 N) J8 l1 jwhile[j < people]
% z# y6 @" t7 c' j) D) M0 V9 V+ n[
/ V1 D0 g# A( E1 S: e9 Vif (item j( [credibility] of turtle (i + 1)) != -1)
) Z6 s* L+ i/ f;;
判断是否给本turtle的评价质量做出过评价的节点
2 v/ Y3 s1 S0 c0 {[set note (note + item j ([credibility]of turtle (i + 1)))2 \4 r, L" |, \3 ]
;;*(exp (-(people - 2)))/(people - 2))]

* q$ x" e+ r7 G! x9 S0 nset k (k + 1)
" d3 W4 y, L2 P/ m+ c]
3 w3 n* y5 _( w6 l2 Z, nset j (j + 1)2 Z- e% t0 j+ O
]6 o/ ]: w- e5 L9 s3 b* a, m
set note (note *(exp (- (1 / k)))/ k)0 {; o- J( K6 C  ?) f( ^
set credibility-list (replace-item i credibility-list note)" K$ S8 L4 U8 u7 z
set i (i + 1)
9 j/ c3 B/ g" z! X9 l/ L]
( k, J8 e$ Z! n8 K5 \end& J; _9 e) q  E8 e! h1 J

0 i* L' n  W/ @2 Vto update-global-reputation-list
2 \' |% Z8 s* h/ d: Elet j 0- k* w) {3 s8 D+ g
while[j < people]
) D! L& A1 e0 t' b' Z5 r[, x6 e/ Y" h+ F/ v; m- I1 F
let new 0
0 h/ t$ }' V( m0 Y5 r8 q;;
暂存新的一个全局声誉" p& I: d. Z" x. Q! q
let i 0
6 W( j+ x% J/ llet sum-money 0
8 a9 l  J  E' Z- ]1 Flet credibility-money 0' F; v, ^% `2 |- p$ f
while [i < people]( o* a1 A% `# K) A) t) l' M
[
8 T. Y' q2 ^, W$ Pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 S! Y- n: G( E' g3 v& r) a
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 [8 q0 X$ e1 a4 Sset i (i + 1)1 Q0 b8 T1 h. V! L
]
" m6 z: {5 }% l* b) R# W0 E& I+ }let k 0# W! E6 O: e* `# Z* ]
let new1 0
( ~/ R. _8 T- i9 p7 V( iwhile [k < people]/ ]3 a2 [# J, Z7 l. f
[3 T/ u: ~( j  H! H/ 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)& Q( p! u6 C- y
set k (k + 1)) w) @2 ?! N* ~/ z; @7 W+ T8 Y* o
]
, Q. j/ f0 R7 z7 I$ W+ z. kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # `& k, }5 ^7 A3 w- N
set global-reputation-list (replace-item j global-reputation-list new)
3 h8 k+ t& E! w; o0 ?3 Kset j (j + 1)( T3 z1 H0 p- M, ~
]
4 N7 p$ p; O' e4 _( m. Wend
5 X# Z+ W. }' r0 a2 c3 u
( ^/ A, S9 ]' ?9 t1 L0 n  p' j' P, F6 _, x! g) Y
" O& k0 S& M* L( A3 l: F
to get-color
. ^4 p( Y, V. [: A' T/ ?6 Z
0 [! g3 T+ n+ c% x: pset color blue
, T; ^3 z* e: t$ t0 ?1 d  S
end/ ?- x$ w! R) m& c* V
2 [3 W4 L+ o  M2 }' I" s: Q: Y
to poll-class
- w% e6 l6 _1 p) H% g) Jend( k9 I% W/ M, K
& L% B1 ?, H9 H) L% |
to setup-plot1, N) N8 t+ Q+ d! X9 `
# x  a/ L$ K1 V! N' h
set-current-plot "Trends-of-Local-reputation"

# q4 W! e( ?0 q3 V* }0 R* x8 @3 L+ d$ W
set-plot-x-range 0 xmax

' h* x1 i6 ^7 F9 N! t* Y3 ], [; m+ r6 E9 l7 j
set-plot-y-range 0.0 ymax
" P, z6 U4 i3 L
end
% J" t# W, |4 j1 z- D( V& E8 |4 q
to setup-plot2
( }1 u& B4 \( q/ Q& u
$ ~; K) m6 H+ y# f# |5 A: ?) d# S. cset-current-plot "Trends-of-global-reputation"
% w1 \+ h- M' Z2 ]
  ]1 Z" d1 F: u/ t$ O
set-plot-x-range 0 xmax

4 D4 M: _) K* Z/ x! j
4 ?2 J; u) z% ]0 Bset-plot-y-range 0.0 ymax
0 @; @( I7 N" a; @/ l9 k
end- `& u, A; O8 X( k0 N; e* d9 M

% k& ]+ [! U4 U" n, nto setup-plot3
2 s% ^/ b4 C5 s$ }  b0 x( f6 P" F3 T3 Q
set-current-plot "Trends-of-credibility"

8 F% j7 ~# \5 X/ ~4 {1 r) B
* Z7 E) ]) b9 X' E" h0 W. {set-plot-x-range 0 xmax

5 ]. k$ |1 n. U: q/ o8 W0 m8 ~
4 r! r/ |- u" {* Y5 e1 n. y2 N2 qset-plot-y-range 0.0 ymax
$ h# {, Y5 i4 P& b, j' Y9 _
end
: Z) A0 l$ y1 g+ V0 r0 K3 n3 x7 E  e  B8 ]+ P# k# I
to do-plots- _: Y3 n" t  ?; \
set-current-plot "Trends-of-Local-reputation"
! ^5 J- N, E" a* T( nset-current-plot-pen "Honest service"
2 y0 _, @# q  d* c, t8 tend8 e' P9 s8 i: f3 y
( I' Q) k7 G4 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.% t/ x& m$ C3 o1 k3 X( b1 V- m3 V
  K) o6 q) b% u! W# j" M  E
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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