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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:) \- l7 J( m/ n% @
to do-business $ u8 x: F1 k) s, e/ L; V
rt random 360' Q& ^3 D3 |* N1 A( B5 F
fd 1$ i- _. h9 t9 o. L5 p
ifelse(other turtles-here != nobody)[
& N# G: F! y5 p6 {6 U8 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.  @9 ]3 m, E0 |  T) s
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" w- U9 T9 E; t2 g7 _2 x. [' ]   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: S& Z8 @& V3 x
   set [trade-record-one-len] of self length [trade-record-one] of self
9 K) z- m" `* J8 J& }   set trade-record-current( list (timer) (random money-upper-limit))
: Q1 G/ A- t/ f' G) y( U: E5 e+ M. C$ ?
问题的提示如下:; J4 w" z! `0 n7 W! _; [) ?; u

6 r( M5 a1 X* q  ^error while turtle 50 running OF in procedure DO-BUSINESS$ k& ?0 F" S+ ^0 V+ |, `
  called by procedure GO5 s+ q3 B2 r7 X2 ]; ^) ]; R9 p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.3 K. L* n: [6 ~1 J7 r
(halted running of go). M3 q% S  J9 t0 k; d
, C0 y/ j, i2 x! @' }& [; H: @
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~~
1 t/ H# d) o: ^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 R! Y2 y, ^4 L" ^1 x; nglobals[
( @' N. N/ l( M. `" W" Nxmax" M7 ?6 J, Y9 X1 m$ i9 a
ymax
! I4 `  v1 Z, w  mglobal-reputation-list2 {; `3 Q2 n% ^( @* d
7 ~$ H7 o; \7 e+ G
;;
每一个turtle的全局声誉都存在此LIST0 b+ s! ~4 g$ w8 H9 J% m1 v
credibility-list; n5 y$ w; v( S9 F% Z- P
;;
每一个turtle的评价可信度; O8 i/ c# [; S4 r0 c8 r+ U. y6 E
honest-service
( n9 A2 Z) _9 b: _) sunhonest-service
0 @" _6 J8 `% n5 Koscillation
2 k$ l% u8 M) U- l/ Grand-dynamic8 P, f( V  Y( i( U
]/ S  l8 j/ I7 |4 P# f% l
8 N" s5 w, w  Q' C; V
turtles-own[
" A7 j2 l7 t3 q, btrade-record-all( V. s' b) a+ @. l
;;a list of lists,
trade-record-one组成
, q6 Y' ~1 g( z, v7 f. X: ltrade-record-one5 r) p' w! g2 g$ {% E! t
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
- t) t) T& z7 s5 \" E2 N1 Q
0 y) n: `8 s# h;;[
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]]
2 M8 |! c$ p2 }5 j: }) Htrade-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]9 P# l6 x9 L2 F" Q$ ]- O
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% p7 K2 M+ \, e# S: [2 L/ y$ Z7 v3 `
neighbor-total4 N! |" ]7 H: v2 U' |
;;
记录该turtle的邻居节点的数目: H, }7 J; d9 b7 K6 T
trade-time
% L' t: ~  Q$ m$ Q9 w! I* a$ ^;;
当前发生交易的turtle的交易时间
6 }: }4 [% j9 p& d" T/ j( pappraise-give
% @$ w% R% j+ P8 \;;
当前发生交易时给出的评价
0 k0 y' [4 m8 v- d& u4 }) lappraise-receive! S3 \5 t8 f+ g/ D7 @
;;
当前发生交易时收到的评价
3 A. Z+ n; i) z) r" o5 kappraise-time
2 w2 A. ~" f1 I( c3 E: N/ w- w;;
当前发生交易时的评价时间
* x) W# A& ?7 L$ b! }local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* D2 U) r0 G7 [/ u3 z4 }6 y7 L5 rtrade-times-total& i3 U2 n+ e7 v$ R4 D' f
;;
与当前turtle的交易总次数
( T6 ?, ]! G  `trade-money-total
) y; M9 V% T) N4 M% t;;
与当前turtle的交易总金额
) E& Z6 A! J2 D( ~1 l( H0 {5 Vlocal-reputation
0 _" `' k5 Y) p- x% q' e7 T( Eglobal-reputation2 B* i9 l* N. j2 j0 l6 J2 ^; e
credibility
# e5 |( a7 a7 @6 n; t4 L;;
评价可信度,每次交易后都需要更新
: A5 [* _1 G4 u" h/ fcredibility-all
# @" F7 F+ |5 F' e;;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 ?* C3 W  O1 J: L6 k6 |
. l# I8 k" Z+ L  P- l
;;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
- y& e# c9 V& Y: ]+ G0 fcredibility-one7 f+ K3 n3 [! B) S2 y7 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" t; a1 m# d: D$ X) K
global-proportion
! M" `( p8 ]4 {2 N/ r/ `( u. \customer
) P+ r8 [7 g& S3 w, Pcustomer-no
$ f+ K9 g. t, W* qtrust-ok8 K$ i" i/ I+ f$ L: M
trade-record-one-len;;trade-record-one的长度8 R( D' t& n  p9 q) S$ W4 m; E6 r
]
: C. t& N8 e7 Y
, n6 W: ]* a! ^;;setup procedure& o6 ?! @: r1 _& H4 B6 O8 P) ?

( a/ o: t0 o" Q9 ]to setup
6 q6 f( S+ S1 g
% s! u3 u, Y6 e+ u9 dca

0 C  [4 ^. P1 w7 g2 k6 Z7 r% i8 }$ D2 v$ B+ \' @) m$ U) N
initialize-settings

1 i* W1 G# f) T: n5 P& g* r2 v/ E# a" U* k! `, P
crt people [setup-turtles]

! ], I* `' x& V
3 }- t0 x& E' ~" ^$ Hreset-timer

$ I# T; T9 b3 w0 D5 O0 C; G0 ^1 m0 v0 G* q2 _) b% ^' f+ s. c% R
poll-class

& M) ?2 I' n" C  Y+ c% v% \5 e' c5 Y5 s! O$ D
setup-plots
6 v9 O# o) m7 `, t

) x  x% d. Q' S+ `$ Sdo-plots
  U8 q/ o$ _6 J% f7 v7 r
end  d6 \" T1 j. J# W6 ]1 p; _
0 E' V1 ^8 I1 j1 e' u
to initialize-settings
6 e2 x4 D4 }( d6 c4 ]$ E7 I9 ^
* l. ^. L. v  O) B( R2 C( eset global-reputation-list []
( d  i. Q; _" o  S& p& i
% T) d: A' J  E) e4 g% i
set credibility-list n-values people [0.5]

2 l% g  g/ w4 Q  b! o
# R/ O+ c8 G  j0 Oset honest-service 0

5 ^( u# P) `! h  Y
3 F* w% Y$ x* I% qset unhonest-service 0

+ W& \! b5 x1 Y" o! [( ^$ i( _
$ r$ i; q2 u9 E. |& n" d) T1 jset oscillation 0

( g% w1 I8 _/ X, A6 S3 Z/ }: M4 y0 U8 h! _2 W
set rand-dynamic 0

% R- d2 S6 c* k0 Bend; k9 V- q6 F5 H" Z% b; T/ g
8 s: }* u1 z5 W/ R( i! H  H
to setup-turtles
' g/ S/ D5 V& ?3 O8 i) B4 gset shape "person"6 O* c% E9 U6 L, }, u# d1 s. ]! p
setxy random-xcor random-ycor; m9 P$ w$ o. `; J$ E+ z% @& b, L2 J
set trade-record-one []
% X9 p3 q0 Z: c3 r* r
1 V. C3 m0 L& H9 c" s
set trade-record-all n-values people [(list (? + 1) 0 0)]
3 ~0 g3 q0 A2 f# Y5 g
2 H3 x# {( {9 q: O% u
set trade-record-current []
4 s% ?  o' _. ?. B* R5 tset credibility-receive []( I: @9 R- l/ G2 x
set local-reputation 0.51 f* V7 y! G! x9 a
set neighbor-total 0
" ?. V' U: J7 p- D" R1 @- B7 yset trade-times-total 0, y5 o  C4 A% [! l/ S2 l: D
set trade-money-total 0
' e( n' q5 [$ {# v' \set customer nobody/ f" E, i. j8 `
set credibility-all n-values people [creat-credibility]
. J" @& C0 w* E- U4 p% h' \set credibility n-values people [-1]
2 P, Y- ]$ y" [8 H7 J# u3 i; Jget-color0 y  S8 l8 V& [* T+ J# U

1 t6 N% R3 w- ^$ @  I+ C3 \2 aend" [; t' ?$ g( `6 M! J" X! Z0 F

, K& K3 `! R( t$ \to-report creat-credibility( L9 t. {# q; R
report n-values people [0.5]1 l/ {7 T5 Q& {7 u
end
/ c; \- h8 x6 p6 ~& ^0 }4 X: O3 c7 k4 p2 p0 [4 Y9 j6 W7 g
to setup-plots5 |* q1 U8 `  d+ M
3 m, R! _9 ^. v* y, |9 ^
set xmax 30
: a9 g1 i& U+ X3 i' z% J3 I

3 \( c5 `; ?$ t: tset ymax 1.0

: E$ }; ~2 e3 r# R3 F/ J5 ]2 \4 [) |
clear-all-plots
3 `- g. U6 j  H- P4 w( \9 S

( T( m+ a: R, }- Tsetup-plot1

9 X/ y- P# [6 W, `! g0 b8 d& |. o4 q3 D6 p8 R1 @* ~* s
setup-plot2
# N& W4 o, e: e5 i' |) p+ V

: v, A, ^* o; Q, |* C8 y' |setup-plot3

+ Z( F- f2 m  v; J& @0 Xend9 c4 [: p* i: G$ l9 m
9 e# |$ q+ i. g1 C
;;run time procedures
5 q  Q. P* Q1 |0 K- w% i7 J# |
9 N% d- |+ Z1 R( fto go
: Q: u3 Z8 Q/ H3 @5 q1 V
& L" V$ T9 U: @. d, U( b* qask turtles [do-business]

( R+ Z- I" l; i2 Zend
; [  ]: g/ U: c8 n6 d# j2 G
2 e1 x: G5 d; \6 sto do-business
+ H: O8 w- X# U6 i4 ]" V

: @" N" Z4 [' L# @+ _. Q# z) Z- L6 i; W$ H- u# ?5 e5 M1 J9 i
rt random 360
$ g, V/ t. R: N4 f. V$ @" y

' `4 F' s7 M. `+ ^  N! Y  Ffd 1
5 Y, e- ?( F1 l) P6 R
8 n: {) r7 {* C
ifelse(other turtles-here != nobody)[

/ w0 T# b5 W2 e4 l2 b3 G( y/ m+ P/ I1 h. A/ J/ q. V
set customer one-of other turtles-here

7 a6 A/ U7 x# b$ x! e$ _1 E+ x$ k& g3 @
;; set [customer] of customer myself

, ~2 q' P% N9 ^9 u
8 y/ z" X1 }( \% M$ N0 x; Aset [trade-record-one] of self item (([who] of customer) - 1)
2 m/ u4 t* m% M4 ][trade-record-all]of self6 B. ?- ^$ o# p
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 U& ^" A3 Z. {5 L4 L# \5 d5 y, r/ X1 D) S
set [trade-record-one] of customer item (([who] of self) - 1)
) N8 u4 h. @8 k, d[trade-record-all]of customer
9 |1 _  M& B/ ^) W

# j. G9 y" j! vset [trade-record-one-len] of self length [trade-record-one] of self

- ~3 k6 D% Y2 X+ |" {8 o6 }# Z  K) @/ F3 Z
set trade-record-current( list (timer) (random money-upper-limit))
( g1 F1 }" [. p, k) l+ e% D

! R, @' l* |, d* ]& n! F  @ask self [do-trust]1 ~: s9 H+ D; y- _# `3 r$ S& `
;;
先求ij的信任度! T' D) e( f7 Z& j* Z! Z* w
+ L+ M9 j4 m/ ~
if ([trust-ok] of self)
# F. n9 K5 }$ K3 n3 K" P  G1 @7 X" W;;
根据ij的信任度来决定是否与j进行交易[
- _6 Q/ ]/ l. ]& p  Cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 q2 c; w# E3 u+ T) L( T
% Z2 |" @0 m5 ]0 @
[

7 E1 u, u3 [+ }3 v; j: H/ \8 [
; r9 g; u5 ?4 K# Fdo-trade
3 G, k* T7 ~. H8 F
  Y% I; Q' M( e+ k* l, u
update-credibility-ijl

! U3 R' `. Q, ^
/ q) K, w& Q2 T0 _4 wupdate-credibility-list
2 V; Z4 \+ T# n- I: K% Y3 I
. [1 O( E2 Z' p6 Q, I/ o# L
6 b# N, D3 @& o! q( a# q4 D
update-global-reputation-list

2 g% a4 F1 o+ @2 r9 j+ \# k* B
! T( T/ o" b. Qpoll-class
" B8 X( g/ T. T

- _5 y% T' c- E( Y, @; Eget-color

: g. B4 V  l% E0 g
4 X) D8 _# K3 K3 z]]
! W" O5 k. k2 T6 }9 N+ H' q' c& Y' N3 ]
;;
如果所得的信任度满足条件,则进行交易$ ~6 q2 e0 d4 ~+ E8 N( s; G

! x8 {9 E- L0 v' M4 K[
; c8 t: Z/ h2 V9 k% a$ y9 j
( D1 e5 U7 Q! d
rt random 360

% y. d. W* V2 U. N: Q0 X& }
7 W7 J/ O; r% w" w$ k' |6 hfd 1
( P! Y. ]; G- x& q
/ n$ G' u- p3 n2 l- w7 ^* w  ~# b
]

, `' h: f# a8 O, A! x" I4 W! `. |: Z$ o" h5 t" ^8 w; s
end
1 n) m  {) j& I( U
" B) S/ j" A2 k# p" u
to do-trust 1 y& F( a2 s0 T; ^7 Q  h
set trust-ok False1 q* e( I  z2 n' |3 w% |# P2 N* @% ~# L
) v7 b4 S0 [" t9 |9 z: E- Z

5 x+ S- t* [1 J- Ulet max-trade-times 0
+ c( a. `% b, F! Z+ V/ {  U/ V3 Rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 f9 Q; _& b& Q
let max-trade-money 06 c, Q4 f! Q) K( R8 N
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 F3 {/ \& x6 P/ |7 x; ~' V- \. }let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- E, P' A! n: I

' s: c3 g( j- T
$ G' J: K1 K, u8 U2 ]9 }- V6 r
get-global-proportion
2 w+ i2 Z$ P/ e& U+ A7 Q" rlet trust-value
$ n- l4 m& w; A' x6 hlocal-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 x7 t% y/ A; ~3 a: `if(trust-value > trade-trust-value)
# f  j/ c5 s) k* {- {  M1 i0 E$ \[set trust-ok true]" C7 k2 G2 P$ A  |% _9 r  x& n
end
/ X' m/ @# u8 X" R
2 |6 T# j* [2 F8 ]4 N3 j  a& sto get-global-proportion
- E% J: w1 E/ d( hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! ]  J9 x1 u  Z2 q2 h1 Z& j
[set global-proportion 0]
$ ^. O6 d0 @9 f- D5 v  ^% {[let i 0
7 F# |4 M* w+ [# b" K; B, Jlet sum-money 0
5 F2 U: g  {- T1 vwhile[ i < people]
) A% @% \! s: ^1 \[, e; t3 v% q4 J; c; J: X
if( length (item i
8 w7 F4 a% ~8 G0 v4 t[trade-record-all] of customer) > 3 )
8 B$ R9 U6 k* v4 i5 g
[
% O0 f+ P9 x" g! mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 t/ o+ ?7 O* _( b  ^]& b6 e( a3 L; l
]$ P: g2 U8 v9 f( T  S7 @
let j 03 {# Y) a* i( |2 P" S
let note 0
5 O, |, `! r: Xwhile[ j < people]
4 e4 u+ o- I; j% c[
5 M4 f3 a* Q- E$ Z8 l$ [if( length (item i
, x6 V  C' D9 Z- {, W7 [0 U4 P[trade-record-all] of customer) > 3 )
, O& U* _$ j5 z# }+ X1 D. P7 j
[9 ]2 [4 h' o- H: ~; i& p
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 J& [& ~1 }! D- f% Q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 d5 i7 W9 n; u2 s1 W+ f5 r[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 G. P" U2 k8 l9 ^) d7 V5 }]
: g3 V5 d* R, D9 {+ T$ }]
0 p+ @! f! F7 Sset global-proportion note! |  W' Z/ N: P8 ~' G6 q/ |
]
; w+ `- K2 t% Q% G  ~& f3 `6 n# ?end6 v& v/ D% K* |2 r# x/ m+ r1 i: x; i$ Y# Z
) J" q/ S6 @9 D6 v+ L6 j
to do-trade
: P+ b& q+ ]" J# V+ C2 J% \; q* };;
这个过程实际上是给双方作出评价的过程
/ t1 ?" L$ f- @; y3 G% `! K" P% aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ _1 ]; O% ^- f; l2 W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 j& d, Z% i, k0 r3 W: C; Wset trade-record-current lput(timer) trade-record-current) `! S# t- Y. h5 @3 O
;;
评价时间* @& e& u' q% A: P7 J
ask myself [( E4 A; d$ b) s5 Y
update-local-reputation! r6 y6 S# F+ O$ y% Z8 I( Q
set trade-record-current lput([local-reputation] of myself) trade-record-current7 u. t+ _- O% k/ M; q
]7 q) M% F* c- ]: N2 R+ d& W0 f8 g. T
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ u6 q: y# x8 d! Q" L; n
;;
将此次交易的记录加入到trade-record-one
8 X  @) o: n- Oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# [' E/ M& C* f  T3 ]
let note (item 2 trade-record-current )
7 v' ^; J( C( [( oset trade-record-current. e6 }. `, H) K- ~
(replace-item 2 trade-record-current (item 3 trade-record-current))
* @: b2 ?( P! C$ h) _( W( {3 J9 G! q
set trade-record-current# R- p, r. W8 I, a4 f' [
(replace-item 3 trade-record-current note)
3 h; i5 R1 @% I' p3 l
6 c  e7 b5 ]/ ^# r+ e
" A* F2 {- I/ f. y
ask customer [; B/ h% H# Z* i
update-local-reputation8 k  t$ p9 y" P, [
set trade-record-current
6 W$ {' e3 A# b' I8 F* G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& `. B- z# T0 f6 e% i
]" X5 M1 A3 z1 E
% d' O4 i" ]- u

4 B" X0 @) u% [set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 l# t7 D6 C( w6 t  B& G
/ x$ R' F1 K! P5 ~
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 N% R6 ?& Q$ o; l( I
;;
将此次交易的记录加入到customertrade-record-all
) _' n8 h/ R) ~4 Rend+ q6 h: C- @' \* G0 [& V3 d

) B9 g# U6 q% O/ Eto update-local-reputation% b* A3 ~$ b/ N0 E
set [trade-record-one-len] of myself length [trade-record-one] of myself
# Y: @; q, H; n3 v
! E! y6 k( O$ ^0 s
; o4 }# M0 o2 F( q$ N/ e;;if [trade-record-one-len] of myself > 3

; y4 d. ?4 c# aupdate-neighbor-total
  N6 }4 V( I! ^( }4 H;;
更新邻居节点的数目,在此进行. ]/ v) S- o% L2 W* A
let i 3
6 U' K: {1 Q1 J* O. n8 S2 elet sum-time 0. W$ E: w% J5 Z! D/ ?6 X
while[i < [trade-record-one-len] of myself]* U/ }8 r2 \" Q
[
% q' M5 z6 Y. Z. I" H+ h' O9 {set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ |7 Y) a9 M* T- L$ Eset i
. Y; J  o7 y- R2 F# S, U( i + 1)

& ^& X- j( b: l$ \7 G3 l7 q]
& m- I- K: s0 v: W6 L3 ulet j 3
) L3 u  `+ ~+ z9 d; T: Slet sum-money 0
0 R# n& \% H) m0 U  h4 nwhile[j < [trade-record-one-len] of myself]
9 H. ~( ^, ?  x3 G  e6 [[6 h: G! E5 }" ?- Z3 z" x
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)
+ D) O. i+ ~! o/ F0 s) e: q* Qset j8 k% M+ x0 T9 `* F/ E, r
( j + 1)
# f) i/ Q: j' V$ u4 a
]
  }5 ~$ j# i5 \: @9 v5 X6 s0 U8 _let k 3
  G6 ^2 ?, t" ?  elet power 02 T/ R5 `* k) p% v
let local 04 a; @1 }8 o. [: @
while [k <[trade-record-one-len] of myself]( T+ f5 }5 [8 ^+ {) r. U
[/ c; H9 a  H/ u; ~+ [6 m, C- M
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)   M8 X$ X. d( C1 \9 D4 \& b
set k (k + 1)
0 w4 M* s7 C4 q* @" W2 {, Y' O+ F5 S: {]
& @1 @- v/ f2 {5 ]set [local-reputation] of myself (local)
" O0 u& N. ~1 u: S, ?0 y7 v: Hend
/ [7 K5 y4 M. B3 g+ q: S8 z  A' g1 I; w" V1 U& f0 B* A4 `
to update-neighbor-total
, u2 u, B! h% f8 C- M# T: I7 @% H: ^, `6 u
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 e  w9 _- I! w' e" t* O/ i/ d: d
1 u3 ~) l: q$ j, c

" V! ?  h/ E" Z1 D; H  uend
5 b5 e5 z+ E/ K) z3 O$ _% V! F' @2 v/ A4 X6 q: z  J* L. X
to update-credibility-ijl
5 X" y8 R, a( K- W2 u
) i. w* `0 G+ t" u5 {;;
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。
# [3 L) T+ }/ Q; u/ }let l 0+ C7 {0 q# [% N
while[ l < people ]  g  `6 Z# T) r6 j: U* b
;;
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
; E& e' e! @$ Q[
, p/ s+ a) N7 }let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 h1 v; G5 y2 vif (trade-record-one-j-l-len > 3)4 y- M  U9 ~; ~) Q
[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
% `  j, H' n- B6 R: N) G' K4 ~, qlet i 34 D; m6 X6 [/ F
let sum-time 0
6 o0 p6 L+ f9 d: h  ]: Z$ hwhile[i < trade-record-one-len]9 y0 j. {( P( h9 o
[5 t9 G/ _% L$ d! }' d
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 I- x; j: C* K7 L. [set i
. `) g  H* ?- j8 r, Q4 t) d& K& g# T( i + 1)
5 }+ o" u1 r' ]5 }9 K
]0 R" `' P- H& Y: g4 T- n: C, r9 Q
let credibility-i-j-l 0
. l5 i7 k! e& a" t5 F% l7 a1 R9 O;;i
评价(jjl的评价)
% X! h6 Q$ M! b) \" J9 h3 [let j 3
7 h* j/ S& V/ i( J; zlet k 4
5 K8 Y8 `+ z: y& k) t" N" Cwhile[j < trade-record-one-len]0 x& R4 U4 f* q7 g
[
0 T9 D) b% c5 Z& F$ b! K, }: xwhile [((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 ^# b7 |$ G, y) Zset 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)1 Z. q9 g9 S' e" t: e3 u/ Q
set j
$ w6 x( ~$ E$ l7 ?  ^; E# X. V( j + 1)

( V1 M& Y) G# q; \9 ]% h]
5 |! h. j8 ?) r7 h$ p6 F& e: r1 i# lset [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 ))- u$ }  v. a' n  _; T' @+ U' n
8 F+ c% u1 M5 ~4 h! n1 H5 `
, P% U! u; |1 V
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. k7 w# C& d6 t;;
及时更新il的评价质量的评价
, G$ w  A, G0 X1 a1 b9 Tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, h. \6 a6 L/ i' ~7 wset l (l + 1)
" ^: q  i8 w! a! G7 R7 Z% t. k7 l]8 _1 g5 V/ v$ v; @7 W
end
. n# i& s7 \' i& h# U, a2 R
8 [3 N( K) _, k- Qto update-credibility-list7 R1 T: [, B7 F& a% n7 A5 T2 ^. Z4 M% c
let i 07 q. Z- F- o" y/ }4 N8 f
while[i < people]
  f" N2 D+ T3 S( Q% B" }[9 D3 E8 O" F4 c3 r8 r- s& f/ [
let j 0
& v$ T( j6 t: |" W0 [3 Y$ blet note 0
+ w  b; M) X: M3 _let k 0: Z1 \" v9 N' V! ~; `7 N# |! C
;;
计作出过评价的邻居节点的数目
& a; b7 y+ \! Y, i: e, ~1 k( L6 I0 Vwhile[j < people]7 C4 T9 f3 p- e! L# p( X
[
4 @8 l1 w. s0 d% E3 p3 Tif (item j( [credibility] of turtle (i + 1)) != -1); W  v. }. v1 q/ U8 F! j2 t+ p  w( [
;;
判断是否给本turtle的评价质量做出过评价的节点
% ?" q2 G3 j' Z0 _- H5 |[set note (note + item j ([credibility]of turtle (i + 1)))3 l2 }% y& w9 K0 E# c& |9 c
;;*(exp (-(people - 2)))/(people - 2))]

8 [0 g  ]. B# c' U2 mset k (k + 1)
* ?6 }( `3 j! W9 a5 f]
  H: O$ |3 J; z( |, ?& u9 d: oset j (j + 1)
" l: ^2 ~8 c6 K]
* ?/ b& C5 I, n7 A  i+ kset note (note *(exp (- (1 / k)))/ k)
* b" S' b* ]' F# p- _set credibility-list (replace-item i credibility-list note)
( O+ r/ J7 ?. z  r* ?/ Qset i (i + 1)
' e; S/ R1 d1 d+ q1 w9 v+ M]. ^7 w6 c4 [! e- u1 h' y  v( c2 v
end
7 J- ?- S  f# _" v5 D5 R/ S8 B) q& y1 c! Q$ }1 ]
to update-global-reputation-list6 r/ i- W+ P; N. E+ v+ [
let j 0
( h9 M9 d0 X, g  C3 H( [. w6 Cwhile[j < people]  S; A. P/ q+ ^3 O; @
[
2 Q! m& W) M0 Y9 _6 ], R5 v9 Glet new 0
2 A0 ^5 t6 L# s' Z. ~2 w8 o9 P, K+ T+ \;;
暂存新的一个全局声誉$ D4 I  Z9 D5 b5 X  T% K) T
let i 0
. j: v$ x& ~0 M% n( b8 ?let sum-money 0
' H* ^4 n* R& o7 glet credibility-money 0
1 L+ v: {3 Q1 s/ D$ F" l( I) S, t$ ?while [i < people]
( `) t0 K3 }: U5 m[5 ~' Z9 Q; B0 T4 I+ b
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% w- v9 }) m9 {; z/ @( {set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  g/ K( M" i9 k8 \& C1 X! j/ zset i (i + 1)4 s2 w6 o) G$ {" B
]
% D1 o  A+ p: alet k 0' E0 @+ {8 }4 y- d" o; N* W
let new1 0
6 t8 ]$ h+ r# r2 j. k6 d: [while [k < people]/ v& [% t  z' e6 y8 l
[' b) @( j0 A2 O$ 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)
' Q4 j0 T* ]( W7 W7 m5 V2 Nset k (k + 1)$ `4 p8 A: d) ?% h
]
! `5 y6 X; f2 {4 Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 L* D% T, a2 {; n0 j3 n
set global-reputation-list (replace-item j global-reputation-list new)4 p; F  H3 d2 U) {1 l
set j (j + 1)
2 f* }( d- L$ D* O4 V]
& {  O7 O8 v  Y  cend. h7 l( N5 L/ I6 X. ?, B* E7 v) K
/ ^3 j) ^+ k+ z. \

8 o% H' f& J1 v# L& A8 Q( ]9 J# g; [  _1 _4 U8 v6 c# e
to get-color- Q( V& G7 E, F* g, l9 {
+ F' b* M/ N' q0 V: b0 v/ R
set color blue

1 [, O! H, ?' V; @; ]3 kend# p' }5 E8 n* r0 C3 {! N+ S& `4 a

4 b6 K6 A. o9 w" }, ]: Xto poll-class
1 M4 n; v0 h# P* |end; F6 \8 f9 t5 c0 i
- `5 G% s" j* r# A5 T: o2 D
to setup-plot1
* ^, Y9 j" p. |% `1 r5 P' f. u, V+ @. D  m
set-current-plot "Trends-of-Local-reputation"
+ d. W2 c/ @8 K( T+ t  S* x' @3 a% F
+ F# Z/ e( m8 U7 }2 k2 J1 J- h
set-plot-x-range 0 xmax
9 V- l6 P: u. }1 o

9 E+ `" K9 ?8 [set-plot-y-range 0.0 ymax
* P" M  z: J; ?% g6 u) p* \* z
end5 W8 X% k6 Q. F3 H! A

* J2 ]7 s, o2 O3 A3 Fto setup-plot27 N# F; Q( P3 O# n& S, D6 [$ v, h/ z

/ z' a. q$ x& I  A, r6 d/ z# Zset-current-plot "Trends-of-global-reputation"
6 x% R  K% w" b; P/ c

9 s$ O% W7 X; j$ F& ^3 tset-plot-x-range 0 xmax

* R$ t" ~; X) C/ M$ F7 z
& j9 C6 p  B3 tset-plot-y-range 0.0 ymax

3 U3 @% J! {: M, I7 G1 i8 @: T! zend/ H. H$ ^% M, O( C- N/ I
9 D$ T5 u5 u: e% s( m
to setup-plot39 A4 z+ W- d1 n6 _1 \: M, L8 _

! V5 ?- N: y9 u. @( N, z# X# w) L7 Wset-current-plot "Trends-of-credibility"

( A- [# G1 G0 B  M! O$ ]
& [7 f/ v9 ]' J; Nset-plot-x-range 0 xmax
' N- R  L9 R- c" [
1 Z+ t" C/ [' p  z1 o& U( C
set-plot-y-range 0.0 ymax

9 {$ B( X; |  j6 ~; N9 W8 Eend
6 Z! n% s! O$ C" @( p5 ^" k& P, o& H7 ~' u* \# E/ L
to do-plots+ U% U1 Q( ^9 R% s. R0 W! t
set-current-plot "Trends-of-Local-reputation"
8 O! V& F3 F( x# d9 wset-current-plot-pen "Honest service"7 O+ J& f4 B& J7 @2 J, N5 N# Q6 `
end% G2 R' A4 @( P

9 C, h; b. l; a6 c[ 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.% a4 K# v  ^. y( [; f2 `) L; B

3 n; U, y9 ]9 C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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