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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:
9 A5 R- e- z9 r, T1 X: s) bto do-business
- J9 X& M$ }* x+ E9 G( ^/ P2 w rt random 360
9 h% Z# u1 ~: N3 S3 J1 p  l& m fd 1
8 F; c: A1 ]( p) l# X' V  O ifelse(other turtles-here != nobody)[0 z* i' b3 N9 T& ^, ^. J
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
" r) b8 S2 C: r! t. T9 n   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    5 ~# z8 Q- m* p, |! k% E! |
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 Q  d: ^# a' V; p   set [trade-record-one-len] of self length [trade-record-one] of self+ `# x. q: G% ^4 M8 U
   set trade-record-current( list (timer) (random money-upper-limit))
, J& V7 G- i# ?/ I" s9 O9 A! a! G. U8 E( H
问题的提示如下:8 X, ]0 r2 V( Y% M

" p9 X) ~4 c3 T" j! Lerror while turtle 50 running OF in procedure DO-BUSINESS
* ^& c( {8 `% W$ r0 Q, f' F4 s, y  called by procedure GO
) l4 P% z9 }+ Q8 E/ \1 ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 h1 J3 @$ k$ U  q# o
(halted running of go)9 l! @( y! Z: g+ L1 m

. |- t, e& {& a) v& A, ^) ^' X+ Z4 c5 p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~~
) I, f6 Y0 s( I; n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1 N, L* z7 m+ R. D. n
globals[
" A; \4 K) S9 }2 cxmax2 G# e' g" U! E- E$ r
ymax
' z( G3 q/ a: e; j" A  g& Sglobal-reputation-list
& M# w4 o2 P: T4 }! u1 _' Q$ H4 C' `) T0 |/ F/ |, @+ h) J* s
;;
每一个turtle的全局声誉都存在此LIST, I+ e1 |4 g8 w: m# l
credibility-list" F9 N8 e3 t# k4 _8 S9 a( J% ~5 T
;;
每一个turtle的评价可信度
" |7 T# h4 q' C/ c& bhonest-service. e, ~# X& u6 K+ S% f. _( T9 f7 A
unhonest-service1 c* C8 J$ d* F1 g5 C% @2 z" U
oscillation/ D% v" p! Q# y) N4 w' n
rand-dynamic
) U- ~* \* v( Z& C5 E& Y, ]/ B]
+ c. I2 [# M+ I
3 I4 g; n9 ]7 I3 {turtles-own[
5 S2 [# T2 ?( s! }" b" Itrade-record-all! J9 k* f5 {0 M" u6 l4 n
;;a list of lists,
trade-record-one组成' g! Q7 K# v/ m9 R5 R: Y$ K
trade-record-one
& T! T7 F+ a( K4 \/ o;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 P* o0 V) P8 V/ B

$ L3 L- Y' i8 _% Y( f;;[
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]]
0 M% s. e" x( O# B" c7 Ptrade-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]
/ R; O1 K* `8 v0 W- v+ wcredibility-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+ ~7 w: W0 p& m; x6 D  ^0 v/ x2 h6 Z1 F
neighbor-total/ [; ?- B4 V; i2 ?* J; Z
;;
记录该turtle的邻居节点的数目& I6 s- D) d- [2 v2 C
trade-time( [9 c& u" {$ }% r! {) }
;;
当前发生交易的turtle的交易时间
% q/ Z: y/ b( h3 k% o" Uappraise-give: q: ~# A% i, @  x" W) [
;;
当前发生交易时给出的评价
0 W9 o2 Q3 l$ B+ T# b/ A! cappraise-receive$ p& u5 ^7 ^& I: Q9 c9 `# Q8 e
;;
当前发生交易时收到的评价
$ Z$ ?5 i/ c6 e  F$ r( e2 wappraise-time. t+ O& @/ `1 ]+ W4 W
;;
当前发生交易时的评价时间
  I! s4 ~: t" u/ f+ e4 o1 J, mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
( e; c& [5 i7 I/ x/ `8 h& ctrade-times-total* j' G$ S8 q0 B7 Z: h2 B  [
;;
与当前turtle的交易总次数+ U4 S; H) q8 M  S
trade-money-total4 W4 t& G9 l: _- w/ x
;;
与当前turtle的交易总金额& G) X/ ^5 H% Z: e/ G: g+ R
local-reputation
2 y  q, c4 }4 T/ b' ?global-reputation
! u, y1 w! C2 n; p- m1 ~credibility
% h6 U9 F3 u2 ]6 Q1 n; P;;
评价可信度,每次交易后都需要更新5 Q4 A: f5 Y, M) E5 w5 k( k5 D( P
credibility-all
# r2 r3 J3 o) g) L+ y) [# `;;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7 B  d" d( O- w9 m

( t: Y' A* ^: O; [& B5 y. Q;;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. i0 q9 d2 h8 [
credibility-one! _7 C6 |, n- }. I+ z1 ^
;;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people0 t: b. |  C' y
global-proportion5 y! v' q5 n3 k! S
customer8 i/ B+ u  t" T" _' M$ \
customer-no. i8 U8 g, G4 D3 g( s& u: ^
trust-ok
3 a: c; h3 p' s. h5 otrade-record-one-len;;trade-record-one的长度4 b9 _" X! n# t3 L  P; t; F) x
]3 N1 I2 \- F( R% K. l0 b

- S/ ?/ J3 i6 X;;setup procedure+ f) K* A2 k+ \- a3 f0 D

6 i2 _' k5 R  y! Y- |to setup' T& l4 U$ x6 B1 V

4 k' N$ L3 P% W2 l2 nca
1 T) s/ o9 ]* u( E3 d9 N! C
- A" S& `. H- S: E8 W* y' i
initialize-settings
) Q( U- Q; p) ]

6 G. R3 v! L+ S1 gcrt people [setup-turtles]

& v9 G% k' E/ B* W& _. b% I2 u2 `( a- @1 N
reset-timer
8 T- K1 ?2 g' u5 w8 f; ^

; n8 ^6 y  a  B# Wpoll-class

) k6 q2 p1 _  B8 x  L
8 g8 u$ N4 @( r( m% Z/ F5 |setup-plots

8 ]. _' O0 J* ?9 U- j# G
4 W, V* A, w! O8 N  w# edo-plots

7 i) {, U; a/ f0 {end4 ]* q2 {) u, \( Z1 }& n
# A/ d8 o( P) G% r6 Y
to initialize-settings
" i: G. m. t5 A3 d7 l& I4 R  |
/ m* f2 H, m3 i+ j( Kset global-reputation-list []
- c( q2 k3 o* h

5 v+ O7 G/ ^- Uset credibility-list n-values people [0.5]
6 U0 C" @- M$ }6 Z7 R

( Y/ {- @4 u% E& j6 W7 iset honest-service 0
+ L7 P/ k3 C) _; O8 [9 c

/ W4 o; \  `0 Oset unhonest-service 0
- H0 b* I. ]& v' p

; P" T/ N/ `* G  n- l. x7 v6 V$ Q" sset oscillation 0

0 `1 r3 w. u( U+ @7 f* K7 c7 E1 q! b3 y; _& ~
set rand-dynamic 0
* T) _$ j( L. L5 r- z; V0 ^
end+ p$ b7 S; C8 u) R, m8 W4 X

5 s' w5 @- a: k; L* q& L* ^to setup-turtles + h5 K3 @, ?% W0 T0 @, }0 p, H
set shape "person"2 K0 D' X# n/ J/ V; }5 s/ x" Y1 F
setxy random-xcor random-ycor7 |, @3 g1 A7 J) D5 r+ v
set trade-record-one []
( ?% a4 i5 s+ v" T2 |! a
; X, k/ b" Y$ f# N9 T
set trade-record-all n-values people [(list (? + 1) 0 0)] * X- c3 D& T- w* J+ M/ z- H
+ p9 Q: U( w: e5 ]3 v0 g6 M2 _
set trade-record-current []2 p$ y  G" X) T: w) ]/ u' T
set credibility-receive []
/ e  s. `' _" sset local-reputation 0.5
5 D: b7 @" e7 d1 }/ _set neighbor-total 0
( ^* [. t* b( W0 _* ^. fset trade-times-total 0
$ q% A. x7 O9 tset trade-money-total 0* O. l0 Y/ n, m) L* R0 N, |: @8 {3 v
set customer nobody# \3 o2 ^* e. l7 v9 i- Q
set credibility-all n-values people [creat-credibility]( |7 M$ S. ^, U2 N* i. D; i; |
set credibility n-values people [-1]4 E- A. J8 W& d6 v2 `" ]* F
get-color5 c9 o. y" J" y9 |1 u
" ^* \  X; h' G: {
end
+ y0 @2 N1 L0 d5 y, ~" k0 B
5 g& ]6 V0 g3 nto-report creat-credibility: B' q8 U8 f  e( J1 W( p
report n-values people [0.5]! s. ^1 S9 J$ H1 L0 k' y4 N- z3 p
end
( R* L& b+ m; }. S$ E5 L$ V) z1 q! C% A0 v, y9 q
to setup-plots
" y, ^! B5 b+ p& A8 W5 I; M8 u& @/ M6 b* P; O8 E
set xmax 30

( ]( S) x( B5 I" [0 O, e- x" w% I" n6 q5 S
set ymax 1.0

2 n7 X" s4 o" r5 i) [. O
; F* C, `. x0 y( V$ g" I7 q/ ?clear-all-plots
7 E8 F* x6 M$ t, Q. g' R7 q

3 d! ?1 Q8 j) n2 f5 Ysetup-plot1
% N% }" R/ h- Z3 c5 q; Q& V

3 C, N& Z9 m0 w7 K1 A1 _setup-plot2

7 M& [+ j% e1 _+ Z5 ~$ k8 I2 c6 A
setup-plot3

) b& o- ~* v2 [3 Y$ eend
2 N( a  q& A* U  ^6 y
0 [$ z' p# N* j: Q( p;;run time procedures
) l" V7 t% f0 H, V5 n5 w* q: q$ Z0 L! J- N1 g/ o6 X
to go1 N* r" h5 M' `9 j2 q
) @; ~3 _  v3 ~$ j/ z( C
ask turtles [do-business]

/ c5 l9 F, y1 zend
* C0 X2 s  N  [/ W
/ e" V! [* ~- {4 c" X, Mto do-business . W" _( n) a  D; R' H

9 G0 Q8 }, M' ]* L+ {- V- `# J3 m6 u
' j" {4 s6 [, R' T* ]3 U: H" w# rrt random 360
$ F; W: O- J! A, ^- m
; b  v0 k0 Y% A4 u+ b9 C
fd 1
# V8 X+ B" C( T+ G; h, ^- _" r
* U' ?2 ]  {7 J0 Z
ifelse(other turtles-here != nobody)[

1 ?/ ^* b" F- d# h
6 T  j: N9 M% t/ ^$ [set customer one-of other turtles-here

! s- g7 F$ @6 h$ s; @$ K- T/ ^$ {# Y8 |& w
;; set [customer] of customer myself

+ z0 ?$ w: z. Q, A2 B1 k0 s/ S+ c0 p
( O7 @* N$ g6 I$ K4 B! {set [trade-record-one] of self item (([who] of customer) - 1)
  {. f) ~% k  h4 Y3 j[trade-record-all]of self
; ]) b8 ^; `* c5 I0 p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& O# a* X" `+ @0 h6 _" {" ]3 Q+ M, l5 [: M# C# }1 C: R, ~
set [trade-record-one] of customer item (([who] of self) - 1)
, [4 `& l" z) L4 v" U[trade-record-all]of customer
. l% Q+ i7 r* n- _0 o# [

* n6 {/ U. z1 g* z' gset [trade-record-one-len] of self length [trade-record-one] of self

& L+ a2 {& R- e( S7 F
$ X& d5 a$ X' O8 d2 \- F+ w+ Gset trade-record-current( list (timer) (random money-upper-limit))
1 K' U! I5 f  |4 p+ A2 S

& V9 A, E4 i5 q9 ]& _ask self [do-trust]) z0 u% `) w$ e# k, U& [& X
;;
先求ij的信任度8 C4 g' f! z' m

: G( f5 V9 Y" y& f( S- U7 F4 z7 {if ([trust-ok] of self)6 \! A. }4 O2 }  l0 N
;;
根据ij的信任度来决定是否与j进行交易[7 w' r5 }0 ~: h$ D" V
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ ]7 }% R; f' n3 U3 o' |5 L- m
! `7 x& J; B5 {2 K! P
[
! G3 a8 B. F0 b4 e6 O- W# V3 U

: r8 V* \$ @/ t0 M8 @/ u9 I6 Y3 tdo-trade
+ Y% x9 o- W' E  L" R) |- F

+ R  n& |* ?  b; `4 Lupdate-credibility-ijl

" H+ _& d1 L4 o3 |6 s
7 W/ e8 H2 D" x+ p$ u( z  E3 Oupdate-credibility-list6 u$ D9 b: s1 C0 o
5 V3 W4 Q+ D4 S' H; Z* o' |

+ T1 O8 ]2 K& e* Y) aupdate-global-reputation-list

9 y! w: s+ N, p4 b
4 n+ Y, P  L1 Z6 Q" X  R" Lpoll-class

4 K6 i$ X1 d' i1 ^9 I: a! O6 I5 o" F: R7 X  l! h+ B9 S- t
get-color

( Z! M$ q& ]1 ^4 K0 s
1 ]% J. s' u8 x: |: O]]
; t( \6 }7 \# J( I  K
2 [3 M: c" U, t4 b  s6 };;
如果所得的信任度满足条件,则进行交易
6 u! C6 f6 }; c* i
7 k' T/ a& u# g' t[

" }0 b* q* m. H- x) h* a9 }- k( s1 P* L9 G/ k( V
rt random 360
4 O  u& M' @2 B- _' V- _
7 q- ~  P' G" e4 q3 E4 R
fd 1
" B7 _0 g- P+ [1 o5 t' U

( W7 W) p, ]& M3 O: {  q8 o]

% T: n: Q& H+ w1 ], E3 k9 [  F/ v' i* d$ T% l4 ]& e5 H4 b
end

) A0 D! d7 ~4 d5 |, Q6 Z4 x( n. P- O! {
to do-trust ! d0 K5 E/ p. x  c, ^3 Q$ R; \
set trust-ok False
; t' I+ [# s' R, y7 X2 a3 r3 l4 S
* ~, N* i( M8 A; }0 Y
let max-trade-times 0
5 a9 o; I. \# [6 \8 v, p1 d  K7 Eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& _3 _5 v' ~9 tlet max-trade-money 0
& x/ F2 }& d& C" uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 a$ J' b6 ]  z# `. r* M: q) Olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) I8 ^/ D4 s5 q) H1 d1 l3 Z3 h6 i: S
. `0 v; a% U, m; C6 v1 v. ]
get-global-proportion
, r% G+ U& u4 C# @  d( }& [5 Qlet trust-value
7 d- Q* ^. z/ Z( m& T2 p& slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

$ T" M( s; B7 u' nif(trust-value > trade-trust-value)
# i" @3 v: c4 C' r/ O[set trust-ok true]6 G, y& }" b+ s  M$ M% j
end
; q' x5 U  K) V* L. S
. Q/ C  |- f) ?; D  lto get-global-proportion8 ~- K. U7 I4 s/ L# [3 L
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# A1 g; s- g: n[set global-proportion 0]
4 ~. y+ Y/ |1 ^3 [[let i 04 P3 y* W; D% d# m2 p
let sum-money 0
& {" g" j9 i$ u* k5 N2 b# k6 xwhile[ i < people]
( c2 t' n( a5 x8 c; g1 `3 A; v[4 X5 V/ R/ p1 G5 V1 b! w. [# ?
if( length (item i) A4 s) w, k" @! i* B& e2 Y* O9 ]
[trade-record-all] of customer) > 3 )

+ ^) }6 S/ L( _1 `% t( [[3 \* F: s& I; @/ v5 S& A* a, d$ H
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 ^6 J/ g! A- V/ u' \3 r& P]
: B% z0 |- P2 k- c& F% I]
' M+ t6 w1 V. n& B# a7 Klet j 0
/ L4 K: F) U3 M+ A8 J+ Xlet note 0
: e8 p' p3 W, g; T# uwhile[ j < people]7 K3 g: V. z# k
[
; ~7 z' x9 f* F4 k4 n% pif( length (item i
5 c% @$ l6 j+ H. n( t* G# V% d[trade-record-all] of customer) > 3 )
5 F" n) O4 g, ?9 C7 V0 `' \; q
[  [  V1 l/ D7 O: g
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! X4 ^9 K; R2 \, }7 {$ w
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 f" S; D5 @# ?[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 {. s7 p6 j, L0 m( {2 f. ^]
8 c0 q9 @( w/ Y" E]
1 {5 k  L3 S, `- m3 _set global-proportion note5 q! W" B- J. [, [. O0 D
]
; A8 e& x. X1 ~% S: J& yend
1 z: j. u* w. s; l; z; z0 p) q3 U7 d7 k. [5 A" i% {
to do-trade
" |  K' v4 ?" }, T6 H8 x, };;
这个过程实际上是给双方作出评价的过程2 h1 ], E; I3 ?/ q! L2 W/ b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 t5 f9 N; w! w" l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 {) d& z. S; u9 Q7 ~3 `3 A
set trade-record-current lput(timer) trade-record-current. z" R& H- T+ F+ L  i1 I8 V  j- i
;;
评价时间' n" s2 X/ D" g* t1 E
ask myself [3 }/ |. U& m# J
update-local-reputation0 R4 G; x0 A- r, e, [# L) Y
set trade-record-current lput([local-reputation] of myself) trade-record-current
; y  c6 o. y" g0 t: \]
5 T6 q" V4 c. A' S9 j: M( Cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% `; |9 P! [- f4 D6 {  \" w6 {;;
将此次交易的记录加入到trade-record-one
$ q( M; \8 G( T" m4 _6 l2 a. D# F  jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; @! c! R! r& g# M' s/ V/ O7 {' W. V6 mlet note (item 2 trade-record-current )
9 j. h- N+ u' Z* [$ {% Oset trade-record-current
% u0 \% ^6 ], h(replace-item 2 trade-record-current (item 3 trade-record-current))

5 I0 w% }; d4 Nset trade-record-current. J' A/ k: m3 T, l3 o5 i* X
(replace-item 3 trade-record-current note)
; S, ^5 D: N2 P( f9 [3 r. ]$ p1 A; ]! Y% u' b( `7 u+ \% w+ H
" Y) `  c# y% V' o0 k$ C/ C9 P" V5 y
ask customer [
6 k1 j. E& d& B- H$ ]update-local-reputation* N' s; X" ^* t, [2 s! o
set trade-record-current
6 c) ?( p1 w0 d- ^& _- m(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ y) o, J1 ]7 |8 J' S2 t9 G  [* f
]: m- y+ R' w4 p$ w& }" b
' `* p: ^8 j# w* i

1 ?9 L8 p+ X5 ~set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# O& Z; q6 o, C: h
/ @! }. l4 m5 {+ ]# F9 Y7 `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ M" q' ?- A! A1 g- n;;
将此次交易的记录加入到customertrade-record-all
- `1 T( m2 N& n7 @- u' z( vend/ l, B# h  P, d
- {6 i( K6 l+ ]  C  X- t. ]4 N# T. d
to update-local-reputation
$ ?# b) S$ H/ t$ rset [trade-record-one-len] of myself length [trade-record-one] of myself5 F) e+ A6 B+ W$ \& Y! M: Q
: Q* b  x& S+ w" S- S
( ]; ]$ i2 e/ d' t7 u
;;if [trade-record-one-len] of myself > 3
: ]3 x  u, S5 F8 B% [8 E
update-neighbor-total( |+ I( @# ?, b" F1 Y
;;
更新邻居节点的数目,在此进行
5 F( P. J& Q$ Y/ U( O) Alet i 3# `% j  h' i( D. Q
let sum-time 0
9 M& a" R5 H7 D$ \$ H0 zwhile[i < [trade-record-one-len] of myself]' g' q9 U! @+ v9 X" q1 F9 O" l$ g
[/ x" l2 o0 ~% y, ]1 b! }5 ~
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" \4 A9 d6 u8 W: X9 X9 gset i
, f/ g! H+ f& t- p4 U% ]. F( i + 1)
2 `. ~7 F  b: Q) n  a
]
$ g) l0 d  D1 `* L8 Z+ n# W( A9 Glet j 3. d0 T4 P8 }, k9 d8 J* i
let sum-money 0, \2 G' K4 g9 d
while[j < [trade-record-one-len] of myself]
8 F- l/ K) g$ `) l) E[
' l+ M1 k2 V& x3 Rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)5 V( P/ V6 f$ l) c5 G2 c
set j& E. q% U) t$ ]) s% Y# a; R  |5 R
( j + 1)
! Y: S; ?, _" v" Z
]
5 Z% ]8 w/ Y) S9 Y8 F: Xlet k 3
9 c0 \/ ~' z" Ilet power 02 h7 g( W- k5 P: z
let local 0
7 h$ a, @* l: l2 i0 {8 }while [k <[trade-record-one-len] of myself]5 A+ v1 e. O8 `6 I8 \
[
! h/ J( l. x& d/ V/ ^" sset 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) ; B- `% [7 }+ O, ^
set k (k + 1)
: R" a2 Y( o1 d1 Y2 R]
% [; u+ ?( m1 `; Y' ?' t. p. A7 zset [local-reputation] of myself (local)* c, m  ?! ^* H6 ^# X* P% U
end$ G0 T# M2 \' n2 Q$ F
# i" k: E+ s- g3 E. O
to update-neighbor-total
# Y9 @% ?, M) H( P
; E0 b/ D4 P/ y0 Q  B3 Z  _; rif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 \- P3 K, ], q0 d

# J2 o2 A+ j# V

* }. B  ]( R: G: D1 Eend; i5 y, }& E$ [1 E$ f
- y  K) E/ q; P  ?
to update-credibility-ijl
' T3 V8 i, i  v# X0 ^5 u
# y. h" [+ ]9 K& g5 I: n+ e3 x;;
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。9 W5 h! C& Z2 t0 t  X# O0 K
let l 0
* P" T8 U% h$ z) ^while[ l < people ]# x# E- |" d' i( ~5 n$ t  L: P7 Y
;;
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
6 V. J2 K& w- j0 ?[. V& A* G* t! l& w( I9 g; }
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)( O9 q* `3 `. z: l+ H. N' V
if (trade-record-one-j-l-len > 3). ^4 q: K0 d' |+ p0 Q3 f6 W! i
[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  \  @1 l( S* B
let i 30 N9 t( H4 Y: w1 m6 d
let sum-time 0" y" b1 f+ X! j* }. I0 q( V, n$ Q
while[i < trade-record-one-len]
3 q  F4 j) k# j! t1 ][
0 L2 r/ N" V9 C4 |- p" eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, B' e: S; x: g1 ~, pset i
1 @* \* Y4 }! t  E$ n3 o( i + 1)

( L( C; P9 q: {  D" U' y2 X, V3 ~], d, n) v. W* y6 \6 ^
let credibility-i-j-l 0
9 a* t- v5 |3 y# a$ X;;i
评价(jjl的评价)
' A6 R/ f; o3 U3 C' s1 M( M1 H! Ilet j 3" L" z. k6 e- s2 s
let k 47 a( F& R3 s- R7 X, m
while[j < trade-record-one-len]
! b& I/ G' T- P7 \  s7 e[
2 ?. R# D" ^7 e( n: ^$ Ywhile [((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
& y6 P6 J" ~/ h1 U0 V9 gset 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)" y+ D. g- f" G9 J6 \
set j% N3 F: B% [) |+ X+ R
( j + 1)

8 p8 v+ e9 t/ m! l, V% u]% z% P: c, U5 P% L7 z" {
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 ))
, n) f* r& N# \+ o( T
8 g, z' S6 [; m, T7 H( k
8 K/ e+ K8 M( V* P/ ?7 c/ F/ Q# {
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- P$ m9 Y$ w. H4 k8 Q* o2 \;;
及时更新il的评价质量的评价
) s) L. ~( B1 {set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ D3 z! V* R& Y% Q+ R
set l (l + 1)
8 `8 M7 i) f+ H% \]
) E  _$ s% r" P: y& p8 Fend% Q( n: {1 U0 L" ~$ U
0 u1 K0 z: t5 t6 Q
to update-credibility-list3 S' O+ t& X% J3 D9 s
let i 0; s' Q: s$ o  V) k# y+ p* P# K$ u
while[i < people]2 v  k& ?: g: `0 X  e$ ^
[
+ l6 L5 l) l1 @9 |let j 0/ J  i& B4 f3 C) @4 k' M1 l0 {) |! P
let note 02 S( `2 c8 F, ~5 G: B& x/ T+ x: e/ m
let k 0
9 {# H! W3 ]2 w  y& d;;
计作出过评价的邻居节点的数目; v* o& Y3 |, M, Z9 @& m
while[j < people]+ A9 D# b' R  L: A; G" b. T7 R! |* s& x
[! z7 {/ J! l9 `% T
if (item j( [credibility] of turtle (i + 1)) != -1)+ r4 Q2 H3 u2 v% t  C& |
;;
判断是否给本turtle的评价质量做出过评价的节点" F; q0 x3 ~" P# Y. c1 l  K/ x
[set note (note + item j ([credibility]of turtle (i + 1)))2 o; {# e3 w( _& U: D& }$ ^% P2 @
;;*(exp (-(people - 2)))/(people - 2))]

/ O/ d* c: J3 oset k (k + 1)  H/ @/ r0 B+ t# G. N  f& J, q
]
: v9 A7 A/ u) W% Qset j (j + 1)
; ?. {- X4 r2 S. u  h* I+ @$ c, Z]1 n! _. @' W6 a5 q4 }4 M7 n0 |
set note (note *(exp (- (1 / k)))/ k): {8 d# o6 F0 U( I; X( H/ _
set credibility-list (replace-item i credibility-list note)
. C0 \" ^2 l$ T* wset i (i + 1)" F9 I& S5 M6 H+ w" w
]: B6 I' D/ [& `9 A7 F
end
! \. Z, g/ P( Q1 U4 e+ y
! g& P- y$ |1 x+ L' @to update-global-reputation-list
( b2 b( C, x6 L  \let j 0
" o. n$ Z& `# m2 Lwhile[j < people]
3 `) b; Q+ ?/ G$ ]' K5 f, ][/ Y. k& T( S  }1 Y9 L
let new 0/ p4 ^4 F( j+ z- b1 t; _
;;
暂存新的一个全局声誉1 [4 t2 C0 K* v! \+ d) g# d
let i 0
- w, b! S# y5 X9 }, G4 zlet sum-money 0
5 f: v' ]" {" g7 Ilet credibility-money 0
& d9 L; A! ^' T$ g/ j0 Wwhile [i < people]$ A- _4 M$ X# }# }% @' S
[& [, {! U6 E, u! ]3 K* V* _- {
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) {! ?5 A; o7 s2 c% H' X5 n
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): U. l7 s( `% G4 m! C' ^
set i (i + 1)6 p( e  m4 X* Y5 \* n
]
& B2 g9 ^( z, O% S5 Klet k 0
5 P1 S  A8 f; g1 C$ O! qlet new1 04 |3 n' F9 n9 r% q* w& s
while [k < people]: n  g: p% P$ a. |: ?! ]' I
[, r4 |4 B- e" B8 |; F/ d  X% k
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)2 s0 V2 T( E! M/ x( A+ \$ p
set k (k + 1)  n0 C4 n) ]9 ?6 C, L' |9 U9 b
]5 b) J* _8 |7 k3 C6 u
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- x/ e- S0 U  l  ~. n( Y7 r; A9 eset global-reputation-list (replace-item j global-reputation-list new)' w* U6 a+ L+ C8 ]& [  i
set j (j + 1)
7 r) q  j3 F+ S" Z/ E" y]' |9 K6 {4 k. u; z! V2 W
end
, F9 C' y* M: o  I
! @* x- I! L) j/ m7 |/ r7 O. S) f; u% c

( n1 z2 I, @. m- d' @to get-color
5 J( C. k$ U7 z( g) {% L9 A% n0 G' F
set color blue

$ `$ k+ s/ Z. G; C) @end
9 _) T" b. X; G6 x  r$ \$ L: g
6 H" y, F- [6 x0 gto poll-class
  ~, v0 D  Z% m* K- lend
6 o* x! z" i0 c. ~; n* n# o  C" |/ u) q( G' F1 }4 Q5 D
to setup-plot1
% o, l: P! w5 m0 U6 G9 S, Q9 r+ [1 ?( r( {: G
set-current-plot "Trends-of-Local-reputation"
6 M2 h% W) U8 N3 F( P" k3 k
4 g: Z  y% N/ m6 G
set-plot-x-range 0 xmax

# f7 \/ W6 V/ |! }
8 b2 c' [% S+ M  n" Q6 {& l7 \set-plot-y-range 0.0 ymax

. b; X' D7 E  Qend
8 ~3 ]$ T9 C  t! p( [7 V# S( g" G$ D2 _+ A7 p% _5 N
to setup-plot2, e3 ]5 \9 s* ~0 S% g

2 v  G, M' R. a6 gset-current-plot "Trends-of-global-reputation"

" `9 f9 A, ?7 D0 s- j3 o. \6 ^9 |* B7 K8 O" t3 E8 |
set-plot-x-range 0 xmax

+ _3 `' G( n  i; N5 x( d# Y  @
set-plot-y-range 0.0 ymax
; q0 W' Y( e! M  Z
end
1 G2 l; d, P) j4 o: V9 E" c0 V
! U& p# b6 ~% C: H8 rto setup-plot3
) n3 D0 q' i& ^: y9 R9 K& _$ [4 r% h8 `8 u2 `$ U/ w* k; g
set-current-plot "Trends-of-credibility"

+ X0 _0 s5 `. A. e0 |1 Q, g5 h2 f+ Z# a
set-plot-x-range 0 xmax

  c) j/ O2 _4 [- |4 Z5 K* p& d
' ?5 B* B0 v0 o) \# G7 q* Cset-plot-y-range 0.0 ymax
/ l/ d2 A( }- v  ~; r0 a
end
9 G5 {, J. F( `: z7 ?/ O6 u6 i  Z0 h3 X
to do-plots
3 t4 t. e% u" h) ]set-current-plot "Trends-of-Local-reputation"7 s% R1 P. ^% l6 n' F* P
set-current-plot-pen "Honest service". k; A8 O" c7 Q6 P/ B
end
  t5 b  T1 v3 `2 q# ?% }- Z3 h1 d" N9 V2 I3 Z% y. w
[ 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.
. p: V, N- {6 D% Y- w# m( _5 k) P3 V$ m3 @' _
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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