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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:
# N1 a% {# e. Q3 Eto do-business
' r; _% ]; U7 J2 p9 h- T: B( r/ ^ rt random 3609 s/ E( O8 E1 n, Z0 ?' |+ M, D. E9 _; [
fd 1/ X' C$ R# F/ V# g! H5 ~9 \
ifelse(other turtles-here != nobody)[2 n3 E, Z1 R$ H. p- J1 \8 Q" U4 A
   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.
# z0 G/ L: {1 c( w   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  E$ z( }2 E3 _. p+ h+ F% N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 B% i) g" b1 z4 `   set [trade-record-one-len] of self length [trade-record-one] of self
% L" q. U4 @4 S   set trade-record-current( list (timer) (random money-upper-limit))
8 B1 d, u9 @& @+ W, G8 u0 V
5 z( i+ f  X0 {0 j问题的提示如下:
) V2 S3 _+ c5 \
* P% t. W$ Y: herror while turtle 50 running OF in procedure DO-BUSINESS5 u/ x8 z3 v8 ?! E! j
  called by procedure GO0 s6 L. V  R6 M8 a$ M
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 ?# ]" q6 h& ~# i' `/ @/ f
(halted running of go)6 S5 a4 z' Y& K# S

6 D5 x5 Z- z/ j4 e  R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~~
. e9 E$ J; p! Q+ g" K" ^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
. q2 E. ?9 i7 K5 Q8 E3 Sglobals[! h1 _+ f- V% t% d
xmax
, D7 n+ R2 W0 {! Fymax* \0 z" |7 X& q
global-reputation-list, S$ {  ~( u' r7 k3 x0 X
5 x7 I% |1 [, b5 S7 H
;;
每一个turtle的全局声誉都存在此LIST" p5 V* k! U0 \2 H- J3 a; I
credibility-list
3 z9 U! q; E+ ]: J* W4 ^;;
每一个turtle的评价可信度
6 B9 ~5 i' k9 K: }* g! Qhonest-service6 N5 b7 y3 I7 R& c5 O
unhonest-service0 R6 R2 X7 v! f0 `, I. ]2 ^
oscillation
) w4 ?- s9 K* Vrand-dynamic
# c# O2 l* L* w/ i: Y% ?]
: J0 \7 H0 ]  j, G( s- o
- [" X& j* r  Kturtles-own[+ A4 }( t2 t8 N
trade-record-all* J6 m: w: k% N' e6 Y) c
;;a list of lists,
trade-record-one组成
1 \) p3 ?, Y: s8 Atrade-record-one
: O: s" Z; [0 b2 L& d;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ _! n" }9 z4 T7 g+ ^

# f$ E2 N- L5 r# q% [9 K;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]0 w' R( M; b* c. b2 C( A
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]  P5 T7 B3 a4 U6 @
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
7 Y" E1 G- w& s: [' Qneighbor-total5 ~" s8 f3 [4 e
;;
记录该turtle的邻居节点的数目
$ d" x# R1 ~4 J$ K$ _8 B6 rtrade-time
- D) I8 P  c$ ]& c4 _3 B, N" b: I;;
当前发生交易的turtle的交易时间
. D0 A8 @$ P) j* O: I  ]# Bappraise-give8 i4 q! x7 g, p
;;
当前发生交易时给出的评价6 R& N  L9 [1 ^, @( p& v/ r
appraise-receive
, J+ T+ K# r# ~( |. };;
当前发生交易时收到的评价% y- b. q7 m3 q' }# ~+ Z$ Y$ b9 G
appraise-time
! _5 r. a. V# ]4 M& |9 u;;
当前发生交易时的评价时间9 g1 Z  ?' ^4 M# d) j0 a/ D
local-reputation-now;;此次交易后相对于对方turtle的局部声誉5 ?. w# e* M2 S" t$ B( {
trade-times-total
# T& I/ p/ N6 F9 t% `;;
与当前turtle的交易总次数6 Z9 o9 T9 o. {% M0 Y
trade-money-total
: X: Z) r& c8 `  A9 z;;
与当前turtle的交易总金额: ?) @) m$ A2 M# ?5 R: z) e
local-reputation
8 }; Z  b: |8 J2 Jglobal-reputation) H! D6 ^' k4 _) n: N( J0 B
credibility: s/ v6 E! p/ _/ V
;;
评价可信度,每次交易后都需要更新
5 a2 ?& d5 B" B# ]" ?credibility-all: a! ?9 R  I4 z! O4 |7 i. f- f" o
;;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6 K# h  q; f+ F) B6 X6 H: U0 u# g
6 E2 Q1 i+ G! w/ v
;;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
. U" d8 W% V1 G1 z0 [" ]credibility-one2 y( J6 E! J5 v1 v/ |" _
;;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' Y% R( |/ _4 l1 z8 p& [* b
global-proportion+ F' s  Q7 Y7 |: F1 h0 p
customer2 x9 X7 ~5 j5 e0 [
customer-no. c/ k2 Q. ]& J. O  V+ o
trust-ok
# M6 u/ C7 w" l7 Etrade-record-one-len;;trade-record-one的长度
2 I# J1 f- x2 k3 ^* M]
8 T7 `9 i+ n( l9 \. [/ {; O" `+ |  h$ J. w9 s8 M9 b
;;setup procedure3 `6 v. _) u$ S7 K# N6 A7 Z

& V6 C2 O! E5 w7 z. Q$ m5 k$ Kto setup
+ H( I% @& E. T  {2 m/ \. }5 Q' N
ca
  e. A6 f, r8 I+ T: H4 \- {3 e- V
2 _2 l' N" t. j/ p
initialize-settings
8 [! b" [% }- V
. u# L; q, x  I, I: Q, ^
crt people [setup-turtles]
; B# C7 h/ Z+ h" H
6 K& t3 L$ D% c5 [9 Z9 ]! B
reset-timer
0 ^8 P$ q  e4 I# ~- j7 a* v0 b3 }

3 Q. }0 F9 B' {, [% qpoll-class

3 ]& h# @6 u4 L3 B. C, @: Q8 U! l
; S1 a! C0 ^- f4 H4 m2 E' G( r. f0 m3 msetup-plots

3 \8 t: n" k' G3 O  d3 i
  o! n( }6 m, |# e' o. ldo-plots
4 a# p5 ~8 f+ C5 l  u
end' w! @: Q) l1 m& `4 b6 H

/ L3 U, V+ |: z- ~" e1 H/ {to initialize-settings3 N9 v" c" Q, ^5 l0 f& s! {

! T% ]; ]  t( s( G; \* d/ X, X9 Rset global-reputation-list []
' i; ?0 t6 X/ ]" L+ v1 a  k! l: |, o

& h( J- u3 A0 X8 Q  O9 _set credibility-list n-values people [0.5]

" Q/ r' O% C" v, t: f& h/ {. L# @, B! {* W) P5 _  I  S
set honest-service 0
9 t4 W0 b" O9 l+ s& y
/ {) f$ V1 u6 [8 A8 r% Z8 u$ W
set unhonest-service 0

$ A& P1 T5 O' z9 G7 ]. q/ A
- u0 v' f: J1 b. X% m5 rset oscillation 0
4 n; H& J" s9 b' _

6 C' x7 {$ a* E4 j0 c# E- pset rand-dynamic 0
, U$ a; c1 }0 ^! t/ K5 j
end
8 N2 |5 K3 \/ [  d& N& @; m0 S5 m. K. E2 e' r& @
to setup-turtles ; W5 ^+ E) |* L" Q; L" F9 s5 [4 C
set shape "person"
4 I+ E0 K7 d# j; Usetxy random-xcor random-ycor2 T6 s1 p" U& V9 G3 O* p, S  M
set trade-record-one []+ @% {: e. f& g; m+ S8 y
& |  n* z) F8 e& R0 ~
set trade-record-all n-values people [(list (? + 1) 0 0)]
( i+ T0 a, i# k6 m, R, }

4 m- ]4 j; m( K) a4 p" Eset trade-record-current []! e8 B# v! ^. j
set credibility-receive []- U* `0 L, L0 O. R! G
set local-reputation 0.5
3 w2 }( p; L1 F5 x; c! Q& sset neighbor-total 0
& G! z  R6 }2 F9 T0 rset trade-times-total 0! ~8 w7 H8 e  Z+ o4 v: W
set trade-money-total 00 e, S6 ~0 M, p4 r5 {
set customer nobody) B- Z% l4 ~0 a
set credibility-all n-values people [creat-credibility]
( b, @3 t$ i- i6 cset credibility n-values people [-1]9 N- c4 S; q' z- h6 T
get-color
# b( z, t; X0 X* ^, A* Z9 \7 u

$ J% p5 y% e- \2 E+ Tend' f; v( a5 p% r; t1 j( E; _" p
, z3 S; ~- Y+ D8 C* W' U5 g
to-report creat-credibility, a% V' ~  I0 i) T
report n-values people [0.5]
! @: ?2 u! p& V" h6 _end
% P- C! u3 g$ X" c. @0 m
( W: F4 |5 M4 Bto setup-plots
2 ]! k0 r3 K7 u2 u& y: ?3 C! J* {! U6 T) W1 n* i# i
set xmax 30

* z2 j) O6 I- c& w. b7 g6 {! M& L
) h; \6 c. F( Uset ymax 1.0
$ z- }7 P- V( A' N! B/ d  ~1 U

; J. c# R3 N) }  cclear-all-plots
6 L. u' v5 ?2 D7 G+ R4 S
. p# P  R/ k' P' Q! I2 g0 v9 r
setup-plot1

% }6 B; t2 B. e# F  d4 n& a2 v, c: B4 W+ g' y- N* e. r8 N
setup-plot2
8 i* _/ ]4 Z# ]/ T# R
* ]+ z6 ?- C! G9 `% u( m- @8 L
setup-plot3

) M  e/ ?7 y. W" k; D) Zend5 Z/ q. ~6 a0 P* a4 V7 K  r) }

+ c  @8 h* u7 E/ r. _;;run time procedures
0 p1 f* @' m6 j/ K: {: P$ A& f1 R% r4 E' V9 `
to go2 ~2 c0 ^" p0 w" `

5 s5 ~6 H/ {- rask turtles [do-business]

$ Z$ [9 e" w* u4 y/ z0 Lend
3 j/ \$ n- t* j% V+ Y
2 q' @( g& a. y2 \3 eto do-business
0 X2 {7 R" f) k7 \) j
' `8 k/ l2 {: f; \2 j8 d

5 c5 a+ s! z+ l* K8 }9 W  crt random 360
4 Y6 B, w$ T" [; M
8 q0 F0 s( e2 T
fd 1
8 B. M' V( P* L& m

' ^* [* x6 l, k  s1 H. z5 P1 difelse(other turtles-here != nobody)[

, K9 t# i0 F  f0 G- A2 Z" t( N
- F! W+ f9 s2 c1 N5 Fset customer one-of other turtles-here
+ g0 U8 N( l+ h* [! S! T
  f. s3 w' O6 x* e! Y
;; set [customer] of customer myself
( h$ @3 C2 \+ V$ [! h0 ~

" g5 Q! ^7 T4 P& y7 wset [trade-record-one] of self item (([who] of customer) - 1)
/ u7 p) B( \/ q4 D[trade-record-all]of self7 E2 k1 V) B6 S% r8 O9 f) ?! B
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 [) ?. U( I  i. X* J0 z+ M

' c8 D1 Q! C, O$ U0 Q0 Pset [trade-record-one] of customer item (([who] of self) - 1)  [, y/ C9 F' l9 m. r, ~2 h4 [
[trade-record-all]of customer
7 z- ~1 P+ U- E4 [1 K

! v0 z9 \, ?. d) Tset [trade-record-one-len] of self length [trade-record-one] of self

& E$ h) N+ F6 ^" M
, P$ c% y1 k$ d* x- O" ^! F3 }! Z( Rset trade-record-current( list (timer) (random money-upper-limit))

2 h5 a# X. E! m8 L3 s
2 z8 K) ?; h$ ]/ e; qask self [do-trust]
$ \* v9 z9 U, e: I6 b" q;;
先求ij的信任度
1 \1 c5 @: ^/ F/ a% `/ `1 F0 ?
( J) J  @1 C5 J, Xif ([trust-ok] of self)
; Y  C* w8 f. Z/ s! Y: M3 ?;;
根据ij的信任度来决定是否与j进行交易[
( o. k& a; q4 Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 {$ w) W; n$ n5 [" x; c

9 N% s' h2 d" {4 i3 p" e8 s[
8 N) f/ J; k8 A

* x+ x5 O4 [" J6 |0 {0 ado-trade
: L9 k1 Q4 U" B
3 _# _' X; ]7 {, [3 O
update-credibility-ijl

2 \9 V1 y5 `; _  B2 y
2 }- v& F8 R; e. t$ p; iupdate-credibility-list
, y7 @5 Y1 ?$ n

% y/ w7 K/ i, F. t) N) |- H" L* o5 [' `1 I. V
update-global-reputation-list
/ i. G. S: M7 N# m7 p
6 p4 C3 Q, T) r" h
poll-class

) X8 e$ a, |! b  d9 \( `
- G. B7 J& g! _  H. eget-color
* C1 ^1 I% `* p1 S5 \0 P
9 R/ B* W# e; V) ~) l- g
]]
2 i. [! v4 {( y  J% ~) r* I
2 u' f( q% `$ D4 u;;
如果所得的信任度满足条件,则进行交易7 c4 ~1 E4 f- ]3 Y& G" E
, U8 C2 V& v% L0 O. r
[
# z# j5 g8 Q4 `7 Q; z6 I% t. Z+ }

  m. n! S2 ]0 s" l( v5 Vrt random 360
' V5 F( U$ ?' f( q* Y0 q- [

! j/ d. Q: A( A: `) Ufd 1
0 S. J; N; i3 ~( D& U2 t# u" l0 H  C
) _( k; U5 Y7 i7 Y
]
9 M. K# ?+ |) l# w

" B9 F/ n6 ?; n, q1 qend
/ n4 J# B6 I, H4 K* }) _7 _3 T
' N4 G5 j+ F+ M2 W
to do-trust 5 |( x" v" c- E/ P
set trust-ok False
/ E: e, j4 E! d, ?) a/ o& _( @+ d# E& O
+ N2 i2 X& b4 E% ^0 C! e4 K* |
let max-trade-times 0
! v- ~' ]( }# ?/ dforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- }; o) |2 E  R3 m( v2 x9 ~; ylet max-trade-money 0
9 |2 J) i& S% ~$ ^* O1 e1 vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 j& H( c- n* g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ X% }1 S8 T& Z
# z6 K& [' h! \% f
4 Z3 Q! F' I  s+ F1 a% j
get-global-proportion7 n8 b  d1 J  a- m) k
let trust-value0 G* U8 b( W: f
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)

# U  |4 E2 Q$ Uif(trust-value > trade-trust-value)1 I. c9 h  @8 r6 r$ J+ b* k9 @( P! f
[set trust-ok true]
5 Q# ~. i. {* g4 T5 Kend
: G: ?( l) R" m. A7 T; o8 i* s) C) m6 \9 e4 v9 }
to get-global-proportion3 C; G/ R) o) X" K
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( z2 l! z7 H6 y4 M
[set global-proportion 0]1 o( o3 [% d6 I5 z4 Y
[let i 0
2 U5 Y  B$ l+ Zlet sum-money 0
# S9 Y; H5 {. B9 d6 c$ }; s6 ~while[ i < people]0 W1 A( N6 x2 Y: Y2 ]& o
[
5 h9 s5 T( @5 k2 _! B7 rif( length (item i
! U- E) P' t8 I" z& P% ~[trade-record-all] of customer) > 3 )

. n$ i, F! R2 N[2 X' r, Q' s4 @4 T
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))1 S, u& j9 m: j$ {# f
]
- n# Y* W, d) v+ U], A2 G9 G! c' _
let j 0
# P0 E7 M, |" E/ r* [* P8 I& y6 ~let note 0& j" g8 \/ ]6 T& G
while[ j < people], i3 S- `3 R1 z
[  m3 R$ n0 k- i
if( length (item i
5 ?4 o: P) h3 g- s& C) ]% S" z[trade-record-all] of customer) > 3 )

! o! X+ y- @) I( a$ A5 ~[6 u. r6 w: c" s+ K( S
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 b: x. S% G' W6 p7 f7 N[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 D! _5 _' X/ f, _" i3 S; b+ A8 H
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 t9 _' s1 n, h4 Z7 y. B4 n]
8 \+ e. y" W& X* i; B" d$ ~]
: t- ]8 y3 q. M% k6 \, G/ C9 K- lset global-proportion note0 _- x+ G$ U9 ?; C/ y6 l/ {9 w
]: v6 ~' p' J4 c1 T" |4 B
end& @6 x- e, K0 r( B" f
3 w; \( ]: [3 _
to do-trade7 F3 O0 G4 s  |( a7 q, Q
;;
这个过程实际上是给双方作出评价的过程. n, N% q  s( w* g( V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 A: ?: O3 J' K8 j5 Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ {3 ~6 v/ c+ gset trade-record-current lput(timer) trade-record-current
* ?" h! ^8 V3 T! c( t$ m;;
评价时间0 I6 N/ o- }3 U, Q1 l  B
ask myself [3 U% l+ Z! `2 X0 F2 Z) Y
update-local-reputation
/ S* q$ L9 _- g, Jset trade-record-current lput([local-reputation] of myself) trade-record-current
4 {+ H2 _* }, L9 R0 @9 H$ ~]" O4 R! o" E1 i9 S  Q+ }2 A
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ `( D. \3 f/ Y0 ]& ?0 f
;;
将此次交易的记录加入到trade-record-one
9 L, q) m2 R5 s3 g+ `3 S+ a, {$ Nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 Y$ Y' k  s8 E4 \
let note (item 2 trade-record-current )+ y: A9 r# P$ L9 j" Z4 H
set trade-record-current3 C) [9 |3 T7 r4 s' ^1 _
(replace-item 2 trade-record-current (item 3 trade-record-current))

1 j5 z! V: l' M- `% l9 ^set trade-record-current8 q  z3 P! ~& s0 X2 c! Q  s, |% k
(replace-item 3 trade-record-current note)
# L: k/ \$ z% |; F0 D: T0 I; S) v! E0 o
/ C' J  l2 H' ^0 ^) u' X6 X: F
ask customer [3 ]4 c# \2 r6 C! B# o
update-local-reputation
7 M* I% o* R- W$ F6 r* f  K5 ^set trade-record-current
2 r- z7 }8 I# y. \# W  t(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% o3 {7 N3 [: L, M1 a2 N
]1 X+ q* Y. |4 R( M) r) k0 y

* h8 c# q& J" z8 _" Z0 Q
! x$ w; C5 y6 _
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; P* l# T" O6 D& w5 p: I4 N
1 A6 }4 u- P" n2 H  f- A
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); Y- ~2 x, c- p  {& k' ^
;;
将此次交易的记录加入到customertrade-record-all
" N3 P. v5 w3 v* p  W3 ~# Iend
2 m5 M- d% F% s9 Q4 c
+ X" B) X6 y* ^* r- n% Z6 pto update-local-reputation
# \. Y$ y+ G4 f4 i" Vset [trade-record-one-len] of myself length [trade-record-one] of myself; b, P+ M2 I" h) M' [, l
: }+ O; p/ ~  s

3 p# ^6 h. V  o6 b;;if [trade-record-one-len] of myself > 3
0 s# C6 B1 B: H, p
update-neighbor-total
8 U# [+ H2 K1 ]% e! z6 [6 _;;
更新邻居节点的数目,在此进行# [4 f3 S8 o" V; u: K' H
let i 3
$ x7 ~: |( S( e: b4 Clet sum-time 0
* z# C2 Z& ^0 R: P2 D6 F) N+ vwhile[i < [trade-record-one-len] of myself]
/ m: |$ ?4 l" V+ m  A[
: b9 P$ S" L, a/ r$ U+ |5 y( Nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ z# M- T3 i0 I5 {set i( v' W4 p2 |7 O# T- ~
( i + 1)
4 ?4 R/ s( M. J+ M
]
0 |" b( C. q8 M; wlet j 3& G! E' `' d4 f
let sum-money 00 d' E8 p/ ]. ?6 O# s- ^0 E4 `' Z
while[j < [trade-record-one-len] of myself]
; I$ p6 \9 ?6 k$ G/ ~$ ^8 s+ ?[. a5 `9 L2 L8 |
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)2 i. i6 P( N, ~" J
set j# L$ A8 A* B& D' {$ y
( j + 1)
* A8 V$ Y- c# B6 L1 n1 P" X' R* H
]) [) l2 k% [; A& h3 Y' t% D; e
let k 3$ _/ G  |, Y% h$ B5 G/ e
let power 0
7 _$ R- j3 _2 W% Ylet local 0
& I0 f# B9 E  v) _6 x. R$ Awhile [k <[trade-record-one-len] of myself]& L7 w  }  h# B' k
[
& Z# m6 @* {- kset 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) % s2 `' K& Q" T2 U7 @/ A+ s
set k (k + 1)
/ U" [2 V; x, o) r' A4 m]
1 e6 H* o  i) Cset [local-reputation] of myself (local)( R6 d" @# y) }7 a2 W) a2 e1 _
end3 |: E( W* f* G. S, U0 t

5 ]2 E9 s  D5 _, ~to update-neighbor-total
3 Z3 |4 w3 T( G6 w) W* J6 P. `2 X, n8 @7 T) C& I
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 {* s" z+ l% {: y- R  v  @# t8 s

( Q1 n2 l) b; I: \5 k0 S

, w" r1 R6 @7 r) F5 Hend
" @5 s1 W* J. y5 p0 E; O: u! d. k, e* C" d& y5 W! O
to update-credibility-ijl
& Z* m; X: s; M3 \" i- J$ R6 G: h1 p2 M7 X5 I6 g5 f8 S
;;
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。2 ?6 S! ?, A. G
let l 0  Z- S6 s4 U; H. I- Q
while[ l < people ]' @" v  W  n2 T- }) [
;;
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 y9 D2 ~& ^$ M* a
[
; V- C2 _5 B) c  o* q; |let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% U: z% ?/ E6 U, k
if (trade-record-one-j-l-len > 3)
& K0 [0 o* }; ~. e. R2 F[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
% |( M9 ], x  j- h4 H2 J8 S( h/ Q9 F8 flet i 3
* t4 l. N7 |1 ]2 ?let sum-time 0
; J& {) l& j$ [; |$ }while[i < trade-record-one-len]
4 z7 ~, b) I1 x; x# O[
; c- W* k8 q( D6 a' R  k: |* E" nset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 E! k  Q# O7 tset i/ J+ ]5 t0 Q* X* Q) Y
( i + 1)

8 u; ]+ Z. |  w, l5 g; U+ ^) Q]- r* k2 l. n$ t- j6 B0 x- R
let credibility-i-j-l 09 H! d9 V4 N- Z7 N% `1 p
;;i
评价(jjl的评价)
" u7 j9 s1 t1 U- T8 i% Xlet j 3* D6 h/ R) H; ~. t9 z4 t5 R# }: v, \
let k 4( q/ H5 N# i' Y4 t8 G, r, t8 t
while[j < trade-record-one-len]
- k  G( L3 X. D! q[
3 w; w. |% x- x& \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
4 ]/ R( k4 R& x8 V) Q& y8 tset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)7 N* A8 g' {% Y2 s3 K( Y
set j
. s# L6 u! b4 u* j( G( j + 1)
5 [$ K. h8 q( P7 \! {) Z1 J
]1 R2 a* S1 y! h$ A! `
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 )); k6 \2 N  F- o& a
( @) R* c; r+ A$ z
5 h, m' M9 \" L. Q% r; v
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( d' L, M: g# l2 r
;;
及时更新il的评价质量的评价/ G' r; D9 w) ~$ h  j2 @
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ }, D! v4 N( S6 G# X
set l (l + 1)
) r$ k+ R* o! m, }# f; j5 l7 e5 c]4 ^1 i5 l# ^3 G( N% b
end
# \# ]7 m) M# _3 @1 y. }7 }& J; y! r" P" O, w% I3 z
to update-credibility-list! ^7 v& ?9 j) E7 e, m/ D' s' l
let i 0& r! H+ F1 E# Z' s
while[i < people]; A7 W( }5 [7 t6 o/ p) `
[& h7 ]: {8 c* R7 {) h( g3 J/ J
let j 08 _" U0 Z" H' G8 o
let note 0
/ M2 ~6 D3 y4 H5 V/ Alet k 0" S* x8 }* R  {% Y( c& B7 v
;;
计作出过评价的邻居节点的数目
' P4 T# G* O. m+ Q: Iwhile[j < people]
3 ?. ], O: X8 D8 F[
! L, v2 l4 t7 }$ _8 K6 M, N) Lif (item j( [credibility] of turtle (i + 1)) != -1)
0 }/ W) b/ c1 Z6 K;;
判断是否给本turtle的评价质量做出过评价的节点
5 z  Q; v# ?/ {, X[set note (note + item j ([credibility]of turtle (i + 1)))
9 D$ p8 K9 z5 O! A0 k, f6 k;;*(exp (-(people - 2)))/(people - 2))]
, |  r- o6 U9 w/ y5 S1 g/ G' s( x
set k (k + 1)
. X- p2 O5 I6 Q/ z# F]
( ?* q5 Y  o6 p2 Iset j (j + 1)
1 @/ m* w! o3 w" p/ B# d" V], `* p, q1 [; z# ?2 K6 x1 w
set note (note *(exp (- (1 / k)))/ k)
/ \3 d2 U7 g$ I1 W# D% Q2 N* fset credibility-list (replace-item i credibility-list note)3 i8 e- c# ^+ F2 n7 P/ |7 [% q
set i (i + 1)! q; ^+ w8 Z5 M1 c, l
]
8 d: Y: M+ [; p+ {end  J6 p1 Z# K7 R

. r# }7 I6 c2 v' ^& \to update-global-reputation-list7 ~4 B, o; K2 C' z* ^) r
let j 06 {+ S" C( R) l. ]: H) I( ?
while[j < people]. p% S" v, o& n! {! u+ b4 ~
[4 R8 d5 F6 q/ z9 Y8 i3 p5 U! F
let new 0/ a# G0 D& C; c/ U
;;
暂存新的一个全局声誉- @# Q# a% i* S9 d! [5 l( x8 T
let i 0# C) q/ L9 Y6 ~7 ^1 @
let sum-money 0
% u) z4 ^3 Z$ D' b/ H1 I( o, |4 Jlet credibility-money 0- i$ n, b# W% Y$ g0 P
while [i < people]
+ d4 j2 ^, g* l1 A( V[
- w* c8 }/ |# r4 W0 l8 sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& z( v9 q& {3 r8 y) \% s
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ p9 ?* H+ O* f7 k
set i (i + 1)) N& @5 ~: s/ c" L
]
6 v4 m; ~( i$ V) ~2 |let k 0
7 Z$ F, \4 G# O- Dlet new1 0
% G& u! o6 K7 ~4 }6 ?while [k < people]
; ?5 ?( e; F% z$ g1 F; C8 D+ G( A7 |[3 b+ P% a0 L( ?: {/ B2 z! y- a, ^
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)7 F2 Y' i, v+ |9 u, I" V/ S6 ?
set k (k + 1)2 Z' z0 P% I0 z5 v
]
" f- D: m# u, n! V6 y1 Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 a% ~  C& F) w8 t/ v2 j& i* oset global-reputation-list (replace-item j global-reputation-list new)+ N6 ~* N& V# r' x7 r& `( O
set j (j + 1)
' {# ?& L) q: o) b5 z% \]6 h- K1 W' F/ K, i7 _
end% S( Q* A/ o9 \3 E/ U# T

9 R9 A! L6 Q# v: @# y0 V& \6 S1 ]4 j* h, p7 J

* S: \1 z+ H8 ~) V, f# H. Cto get-color/ i" D9 R( f, Y1 e: Y
- m9 I, m( V: }& N5 v
set color blue

- C& c1 |, U& k7 }4 M' T# Fend0 B$ v& l- J$ L' x, s& x

3 \5 y$ [" x6 X+ {; a: ?, L8 nto poll-class
1 W( p" |0 V# Iend
/ j- E) O- i1 A+ B- X. s& ~1 Y& G" T7 n' A/ l
to setup-plot1: u% e+ g" S7 r, e! l" B
, O% j1 J. k3 s
set-current-plot "Trends-of-Local-reputation"

  Q6 C- [: w3 h1 t  {9 A- P% |9 V7 X" z* K
set-plot-x-range 0 xmax
; a; k2 i: M& F% C/ u

4 r$ f& w5 }: e. L5 zset-plot-y-range 0.0 ymax

) {" W0 c. |+ Vend
& F  F: m! i8 r& H( [$ V
8 R2 ]6 \# D" a9 T& O* H! yto setup-plot2( u1 ?. h7 n# M; W
/ M8 \1 q2 j- D" O& I
set-current-plot "Trends-of-global-reputation"

0 Y; T: P7 V  L3 `# L& d" Q8 X/ E
set-plot-x-range 0 xmax
: r( m/ F' T1 @7 l+ h9 u
+ Q: A, m6 g, q6 u' {5 g' E" |
set-plot-y-range 0.0 ymax
! U7 I$ P6 F' m; O
end
2 T0 b7 ~: V# D7 S- g7 B
. x* a( N# t4 o0 [- x% Nto setup-plot3
9 L" ?% L0 @! g
  w6 o4 e9 q5 ~- {* W0 i: |set-current-plot "Trends-of-credibility"
' B& E2 W) z; J. _" k
; I# u6 W/ h: O/ d  \  j/ e0 W
set-plot-x-range 0 xmax

& S: n# e) f( M4 M  O% G* z
% T, I: r3 G' w; W- Rset-plot-y-range 0.0 ymax
- z3 y( Z/ r9 R! e
end& d) B3 e) s% p% p- H
9 p" m* V& [8 x! ~
to do-plots
# M8 E: ~. ^# X  @3 y7 m, Tset-current-plot "Trends-of-Local-reputation"7 ~0 l) [3 o4 c5 T7 g/ l& D
set-current-plot-pen "Honest service"2 x! \8 M0 L5 A. Y- x  S3 b9 {
end/ V2 y! {! L( e/ v
$ P: j( p$ D  I
[ 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.
! u4 S) v/ W+ ~& u( D8 n( Z4 |" ?, O5 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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