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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:
3 X* w* E% M1 W; i7 c% hto do-business . j" s- J& u: E; j$ s! x
rt random 360
7 ~  `/ a& k2 B) W fd 1' i9 B8 G9 G6 P5 K, Y1 h# C6 y. ?4 Q
ifelse(other turtles-here != nobody)[
- h; Q; I0 W) P5 H   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.) d6 n0 C2 e  u
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    5 [! f  _1 H3 M7 i% B
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# C& u2 }; _, X. z% Z
   set [trade-record-one-len] of self length [trade-record-one] of self
  w+ E6 t' ~) \   set trade-record-current( list (timer) (random money-upper-limit))
$ \4 H9 C1 A+ ^
6 x7 S( G$ F1 c; x" |" h2 n问题的提示如下:
" m& t: ]7 z4 n4 u' p, @, I4 y+ h7 A1 t
error while turtle 50 running OF in procedure DO-BUSINESS
; L8 D% G9 ~, u8 J  W5 I; \  called by procedure GO
4 E; ~0 e9 h: U7 tOF expected input to be a turtle agentset or turtle but got NOBODY instead.* [8 u8 ]; b! N
(halted running of go)
* Y, a: a0 X4 z, s* H
) y: ^9 Q6 Y% K' Q5 G" |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~~
3 w  y" f* D; j0 {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
$ l) T* Q1 z& kglobals[
6 c2 j" u) W3 Y, Y4 Q8 Jxmax
5 u; I6 L  }. ^9 d( g) gymax
4 q6 i7 h. [, m3 F8 |global-reputation-list
  _4 Z" F# O. c1 X. B
0 g" }  j9 {( |# p' d& Z: S  E;;
每一个turtle的全局声誉都存在此LIST
( g6 q0 S" \7 v: e2 S5 W) ncredibility-list) L3 D3 v+ w" |) \1 N
;;
每一个turtle的评价可信度2 T" T! y. b0 o/ J: E3 V% y$ W6 }
honest-service7 m5 W' d2 Z5 N
unhonest-service9 _* _. P& s. n( Y+ Q% i* W5 ~. a
oscillation3 L/ \+ g$ F4 d
rand-dynamic
' M3 p8 B0 F' e1 Z]: C- e( f! @% N2 g' \7 E9 R

: o2 L7 o" D: t) @4 ^turtles-own[
, [1 `. b% U. Z7 h: J) J, x6 D$ Q  C8 gtrade-record-all3 }! W$ [$ E+ E' g" W
;;a list of lists,
trade-record-one组成& R7 d" {3 d/ T( T2 N1 Y2 g; L
trade-record-one
) s  N/ X5 P$ W$ f. h$ ~. a;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
( x2 _  {, g; ^  N" {' p5 A: `- W# w8 E9 G3 Z" ~# U
;;[
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]]
% I$ Y) u5 y4 @, v, p) C; ^; j$ Ntrade-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: @( G: w/ [
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* G) @7 }) F( V( s, P- }0 M2 x
neighbor-total& D. e3 M" W9 c' y% f9 K
;;
记录该turtle的邻居节点的数目
* X0 Y! E: s! y' gtrade-time
0 o2 y& a( [+ D: w;;
当前发生交易的turtle的交易时间5 ^" k' u. r' d* Z6 i  h+ ^1 Q" n
appraise-give. p! |! W# `; o9 G
;;
当前发生交易时给出的评价
/ q- j7 R# n1 S) u4 O2 Aappraise-receive
' l, b! y; x3 l7 W+ J/ };;
当前发生交易时收到的评价
7 U; i* U2 ~% v. K* q  D2 oappraise-time% v! a8 q. ~# v
;;
当前发生交易时的评价时间
/ k; k8 R4 d% E2 o) Z5 B8 d' ^$ E+ ^1 ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) Z: D5 I& c2 q: a7 ttrade-times-total: l( q& B/ @; c, j2 C" u9 r
;;
与当前turtle的交易总次数
& e  z* l+ v* d$ Z% @$ f  {trade-money-total8 W, S9 K% q# A/ k% n6 N/ ?  ]( }6 r
;;
与当前turtle的交易总金额
3 x' i) u0 y# ^7 F& \! Ulocal-reputation& t! v1 V& E! }2 f
global-reputation
0 C4 A/ |2 j  g- Ncredibility
) Q+ V$ n$ O1 r% D& l) W# q;;
评价可信度,每次交易后都需要更新/ R! x& L# A+ j: S' W2 G
credibility-all0 T/ E1 H* F! d: B5 U  j  D
;;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
* |3 B" d1 [: v% j5 Q7 r+ w
; m" ^, H$ ~& ]2 Z7 M( |;;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
" Z* \2 U! o' _credibility-one
" S! m4 X7 l2 \2 w6 Y9 P# Z+ P( `;;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* ^+ h& C) n+ w5 j
global-proportion8 K& ?. g  G4 Z0 Z9 p
customer! n5 w* p" U( z' k3 n5 [
customer-no5 {/ C  S8 p; x/ D
trust-ok) p" Y. z& N. u% R2 C% i7 U
trade-record-one-len;;trade-record-one的长度
: |/ y5 A1 k2 t]
" T1 l7 _8 Z; r& R
3 J" E- [$ Z) ^;;setup procedure
1 z/ X( G. `* U' z* j0 t, g! I9 B( m( T
to setup4 X4 r! U3 H  d6 b& [4 ^
& {1 g3 }, y9 }2 N9 o9 T$ I& o
ca

4 J, p& J/ L" o8 K, u7 t: v" y7 \, J, X( r) J
initialize-settings
# ^( E& g, E# d! \3 }
$ e8 G' p9 G" P
crt people [setup-turtles]

0 k5 ~0 C7 ]0 u, r8 i7 b+ z) u* {+ v+ H+ V/ U8 Y5 r1 `
reset-timer

3 p2 A+ h) L! d  j( F: b" J) ]# T) E# Y8 _
poll-class

, H" F9 f! T: P2 E# H0 U+ z
" H4 X" B% c8 ^5 S5 _- @setup-plots
: W; T; }& |$ J; }7 \. X# T6 P
0 A6 Y" k3 t' {
do-plots
4 n0 i& T" l3 }( G" b# l6 X
end
  S/ D. P+ n2 M0 R4 h- V5 F) o( Q) {$ O' |$ [) M- j; \
to initialize-settings4 c1 y! {/ n6 i7 g' e! A+ M
8 S* y. s+ i( ^4 P/ c( \
set global-reputation-list []
7 L/ X0 u* h  ]6 ~; j

9 u" f# k, [8 p# gset credibility-list n-values people [0.5]

: {3 R3 j3 f9 A, u) ]$ Q# v3 e' d0 w8 p& T6 F3 H
set honest-service 0

- P' v" k2 u# ~% S" V) a, D" e& c2 ~1 l% _- b/ x# J! f9 g
set unhonest-service 0

; n+ i$ J9 N4 [$ g& _6 P2 F' i- Z- G
set oscillation 0
# h) ?& y, A9 ~$ z
* e, ^/ g6 C% c7 u" l% q! V
set rand-dynamic 0

1 M0 P# n+ C1 U) G7 A8 tend  n1 w! H9 y( h5 e8 A9 z
* c; b3 O( [3 Y, Y
to setup-turtles 9 P3 t7 d, r# M( j' ~
set shape "person"2 M8 ]# f7 y% X
setxy random-xcor random-ycor
3 t, M  E, q8 i) f% Rset trade-record-one []
' q$ L! C2 V( W; D0 j: i
, C% t- }5 X" Y4 ~
set trade-record-all n-values people [(list (? + 1) 0 0)] ' v4 ^& b  s/ L# F4 c

# b! ~' }- Z0 q- \2 T* I- xset trade-record-current []
  M; K7 k2 N1 M9 y. z# G) \' aset credibility-receive []
, R0 t) d! u4 q% [; wset local-reputation 0.5
8 j, ?3 W( V& A( t7 a( {6 [7 lset neighbor-total 0
7 A' j- |5 K2 h, a4 Vset trade-times-total 0
6 R+ y& N5 V- aset trade-money-total 0
' T4 c( [7 Q  X+ S& x0 J# tset customer nobody9 X7 V/ x  b. `& d! N) w/ W7 u
set credibility-all n-values people [creat-credibility]) h. Q. E* n! ?+ b  h& c- `' P
set credibility n-values people [-1]+ X/ n. q+ @$ E+ ~3 J
get-color
% N' n7 q, q2 G5 V1 H/ i. O! S
& S5 k) ]% N8 R" H
end
* [( W4 E9 g2 Z% e; E' ~. D! w
1 R! d2 ?4 x) z+ @7 A) Ato-report creat-credibility
8 |  v; @0 A) L* Areport n-values people [0.5]
% J( c7 y* |7 I. ]4 U( k" iend' n% b* K  G7 p

7 X5 M5 _6 z2 r: }to setup-plots7 h, b/ L9 h9 w3 [; j+ m! @

4 m1 R+ O, Z% A  u9 Mset xmax 30

: Q" u9 L* V) t
, Z0 o! @& I& [# J- h# @set ymax 1.0

. ~  b! w. X$ n5 o8 P  T: ^: _; R( m+ e! @7 x% k: j3 _
clear-all-plots

7 e# O/ a8 j) l' `$ g1 \+ V6 L$ V3 \4 w
setup-plot1
& {& H0 |0 a) `) w0 m, G6 _

* H% v% e' I  U% C# F' Wsetup-plot2

' \- X0 x4 h' j4 C2 k
; [, q8 `. f; t( W  k' |setup-plot3

; Q1 ~! W+ W, T3 u' aend
4 x7 i& h% o6 C' I# y+ {$ a1 q( v3 X- `  \7 ?
;;run time procedures2 D6 D7 Z4 \- Z' P/ v
) {; |0 M) k8 n' n, n4 k5 |
to go0 u) J( @: c5 f

3 [4 ~% ?9 ?! R$ I* R4 bask turtles [do-business]

% M7 a2 Q0 J6 mend3 v4 ~  |4 x( a" K: u9 L" h

* S. Y1 n2 S. y# |2 G# {& o8 Cto do-business
# X9 F, L# @" r" B) C- H

4 O8 C5 q2 }/ O9 b6 A4 f3 d5 l8 {- b# A( [7 L4 M+ z. O+ P8 i
rt random 360
. `% t5 y6 k5 Z* D4 ]( n

/ A' [( _( B3 kfd 1

+ m. A- }5 ]' P- S1 E9 w; n! f6 d: N1 X4 T/ H
ifelse(other turtles-here != nobody)[
2 j& f  O+ W/ b  g- ~/ c
+ G8 {. G! h9 x  g+ x$ g
set customer one-of other turtles-here

! q  j4 Z# v* O* S( ^. O  o: t% C" P8 A: M3 }& E( K
;; set [customer] of customer myself

/ k7 w& B! e2 C9 h* m
% w3 m/ H5 r& W6 p( [( n0 lset [trade-record-one] of self item (([who] of customer) - 1)) Q- r* m4 [4 F" V( f+ g0 }: \* |
[trade-record-all]of self& K" q' s8 g  j* }) ~
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- L: A2 m  O* O6 ]  e. R, ]# w1 |: V& A' U. z7 u2 S
set [trade-record-one] of customer item (([who] of self) - 1)2 E$ ]- }2 y) p4 H$ d7 A; \
[trade-record-all]of customer

* k/ J0 L* N- ^; ]' f" x4 u+ j/ @/ U+ D5 C% O
set [trade-record-one-len] of self length [trade-record-one] of self

- Q3 J) l! }8 U0 E
5 F8 M. ~& f; Hset trade-record-current( list (timer) (random money-upper-limit))

* }5 l# p1 x6 g) _9 _7 T4 n* s$ B8 P0 M2 Z* Z
ask self [do-trust]
; b6 c6 f9 r! x% g# K% x;;
先求ij的信任度# v5 \& q3 T9 H% `9 F' l; }) ?0 `
2 R& Z! }0 d$ a) o. ?
if ([trust-ok] of self)
! t) e( J3 g7 Y' x; ~;;
根据ij的信任度来决定是否与j进行交易[
, w$ p0 D" l* Y" r8 u& L+ Eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  x. |/ |/ r- U* s. F

: j) o/ r! p! S' t8 s( u[

; B6 m* W/ I4 o4 u
$ `2 d: u' b& c2 v, N: \3 }do-trade

: Y' ~- {# B; y% y, M% M% U7 S6 ^2 \' C* d
update-credibility-ijl
: H5 V/ e  }0 ^7 }1 T8 u
3 g1 R- ^$ O+ V8 h6 D+ n$ `! U+ d
update-credibility-list2 ]+ f* W* ?& N
& L9 G1 i* u& }  C; |

) {( z7 r6 ^! O0 @8 J7 {update-global-reputation-list

6 a! }$ ^. t9 Y# Y( l7 e- v- r. Q; D4 R( m
poll-class
- j  b9 y8 ]: r% P2 z4 O/ s

9 A0 K6 O! N1 cget-color
- s! C2 Y. X/ J9 r6 A# {
: l* U3 s: O8 A; D, O' }! R
]]
: Z( T# n8 z6 P  g& V. V) [  b; [5 ?/ n- c: ?5 G0 h" ?7 x# v
;;
如果所得的信任度满足条件,则进行交易
2 _) ?$ k# t9 D& B5 ^6 Q) b
6 s* d3 r; B1 N" Y9 ]! s  j[
# z8 K$ L0 n2 B/ m

0 r( y, r( b; Art random 360
% l. o6 X; Y! J8 b1 M& I2 Z5 o1 y+ d
1 H" u! D9 K: `3 u/ I
fd 1

/ t( a7 c) v* a& C% b- j
5 C* |# ~' t; x+ O( S]

6 @9 A+ t6 a4 F0 b4 M$ p+ i/ D6 V" m. g3 T* f) L
end
* S0 b& ]0 C& T  \/ F: _

5 d/ ^6 B9 I+ Z# k6 S! eto do-trust : m" g+ j6 v. T. K) N3 C
set trust-ok False! W5 a, R! W! h  W( [+ J0 o" J

( C+ I8 g( D7 ]) {+ V8 @

6 ]- j) f! [$ V1 }( Ylet max-trade-times 0  e! h& w$ B4 z, _( \& n
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]$ Y9 O" v4 ?& z$ a: N4 p6 ?
let max-trade-money 0
* z1 g: I- z% F" h! K9 Mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ V! v2 E+ R+ b# q4 l. m) T0 Z- Clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 G5 ]% e- b% C. S
4 R1 q- Z3 @; t8 }( Q. @

6 L7 R4 @+ V( T6 uget-global-proportion
7 J: n( e) _' }: k9 h  @let trust-value! x3 [/ L: C# o  c+ D1 M9 m7 P$ 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)

5 [$ }. G( m" T' s4 x+ Z% m9 I5 Xif(trust-value > trade-trust-value)8 Y  S4 p4 h$ \( e
[set trust-ok true]
2 d0 R( e- a+ V. n- L, v$ hend/ a9 ]9 H) M- l) C6 M$ t" O" z
: `* P  s4 `* a+ r
to get-global-proportion! u8 _9 v$ Q0 }# x& G' ^/ S8 e) U
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 J/ K0 N0 Z) `) a, w* M
[set global-proportion 0]
9 {; F& c9 @& t2 V) Z1 M[let i 0
8 o# ]- t; m& }, @let sum-money 01 j0 L3 r4 q. L" |5 r. M' F
while[ i < people]
  a: _$ H8 J' P0 \5 g[
# m6 @) u, {; |; P& M3 I: Lif( length (item i
' A" _) a# e. ]. y9 b8 V: n[trade-record-all] of customer) > 3 )
0 \- x( W" @. l9 J: g% h$ h+ a
[
2 z% }7 b8 i+ [& Wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 F, O3 f5 v  u+ y" ?: r% M/ y, @]4 ]8 y8 ~/ L. Q; o/ t, p# d; V4 ?* u
]
1 N" y' P: @5 F& {  b# p& clet j 0
  M/ `5 Z; B& m  L; ~let note 0+ y/ G7 E! z, W3 }( I
while[ j < people]0 X2 c+ b' [$ F
[
1 E! r: s* y) [1 M( u! ]if( length (item i8 ^8 N+ T: ?" x7 V
[trade-record-all] of customer) > 3 )
) F' v% I8 d/ g  N
[3 [0 y7 c3 O. V) J9 r
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* l% j3 Y0 [* i% h! }: A  E: L
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 N! l! n7 G( S, B( r[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# g; U8 P1 P" i2 `/ S8 l  d]
# p  {5 I) O/ z7 d; f]7 D8 z5 i; ]5 @9 q; ^' i
set global-proportion note( X  ~2 x  r3 l7 I
]
8 X' f# C3 T7 W% hend
; a, Z4 G9 b, ?' w  E# v! O4 f2 y, L; [2 m2 h
to do-trade( G5 R  N( r5 ~# @+ ~: D  G
;;
这个过程实际上是给双方作出评价的过程
1 P' U/ D1 N4 m" F9 J, U) {7 u7 }5 _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 p% T% H- m$ r( M# Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- S7 M. \  R1 `# R; i6 i0 T2 Q
set trade-record-current lput(timer) trade-record-current
. \. n' p/ O- V;;
评价时间
  a* J/ l: ^- [7 W, Uask myself [
* x1 I" f4 ?# u: ?! F( u. supdate-local-reputation) Z  p1 `2 N" o' M4 l6 D
set trade-record-current lput([local-reputation] of myself) trade-record-current
! `- @! {/ E$ i/ _8 Y2 h]; G+ c2 l- \: A" U: b; ~/ N+ P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
7 \' D( ]0 @" o& _& N5 n9 m( t) {% I;;
将此次交易的记录加入到trade-record-one, P8 U9 p4 s: Z; x, G
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ g1 `2 ]: ?! K3 Y$ }3 o' ~& n
let note (item 2 trade-record-current )
* @! \1 b. c4 U2 a5 c! K$ |set trade-record-current
5 x% ^; C5 v, a9 Y0 e, c(replace-item 2 trade-record-current (item 3 trade-record-current))

0 t8 y* ?9 t$ w' M: n+ Qset trade-record-current
3 K8 @- H% |! g: G" {(replace-item 3 trade-record-current note)+ m3 ]  i) v9 P+ E' Z6 }
; d1 O& F3 i8 Q2 F

& I% ?  r0 W: {" F4 {' m' @ask customer [
1 t7 N# b( _5 S. [2 _5 Eupdate-local-reputation
) ]$ [, @4 ?4 H5 }, aset trade-record-current. |" [' f% v6 H+ h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ a& X$ e8 Z  t/ X( r! |
], i2 P. m2 Y+ Z! Z  R2 N# _

! n& {1 }8 b' q2 ]+ U4 `+ I

7 F0 V1 d! f: p% ~set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& F3 F( [, j5 e- J0 n$ `/ P

" K) P+ f: v/ y- J' W& r  Zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 B: h  Q5 R2 S8 |* T6 N2 @& ?;;
将此次交易的记录加入到customertrade-record-all$ F" W" e$ b  J% y9 Q
end% W, D4 Z' O$ }7 x4 G
. N- t; H6 ~0 b  K$ A# j! e
to update-local-reputation% T0 s. {" \# ^) }
set [trade-record-one-len] of myself length [trade-record-one] of myself
" ?1 M. G- K$ M' y/ @3 Z  i# [5 }& {: V* c: y
0 f3 r& j  x1 b' E, p8 H3 S
;;if [trade-record-one-len] of myself > 3

1 {8 {1 x* j! ^. Nupdate-neighbor-total- O6 c/ R! L, I- a
;;
更新邻居节点的数目,在此进行
7 E8 v: [# |. Z. F6 P9 ilet i 36 l! F$ l% z' ^) H' h9 m! }9 A
let sum-time 0
3 Y) E2 }- q$ z+ Z: \while[i < [trade-record-one-len] of myself]& U* d) c8 @2 U6 a
[" ^' |4 s/ d1 Y" I
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 A/ v" S5 l- i
set i* J" ~+ Y* s1 b% V4 N3 {; u# l2 ?9 l
( i + 1)
  R0 B2 T% k0 U, g( A
]
( ]' K" k! q' Clet j 3) _6 a' r% W/ I) @2 }8 @. j
let sum-money 0' a. {( ~9 A" ^
while[j < [trade-record-one-len] of myself]
8 m; e7 w: _( F6 B9 Q, {[
6 ?, a; t7 m2 W& }% v* O1 }/ N' Y# {! Aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)+ g& k4 {" W( K( `) P
set j/ t' V+ y8 F: z. M" x- b
( j + 1)

8 e( [' _, \, c& n; B: M]: K3 r# P6 R0 B2 e$ p, i
let k 32 v5 U! `/ {) h& E4 o5 w
let power 0% B- p( u; F' F5 @" R# J2 v5 \& h
let local 0! t+ ^% X" T5 S4 h
while [k <[trade-record-one-len] of myself]/ q3 @8 ?- Y( n
[* g" L" o, t5 A( c3 J6 u
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)
& q. Z1 i: \; v. oset k (k + 1)$ {. \1 P: v* u$ J' K" f) F5 _
]
$ A- |; \* Z8 bset [local-reputation] of myself (local)* C7 e' O# R/ p. T- v5 j; T
end
. c0 @: R! \6 F1 w7 c2 _0 Z2 N
! H( q+ a6 w9 c: H3 U- Ato update-neighbor-total
3 B6 W* X7 K% u! Z. |. ~+ n3 O+ k% l( Z' L/ X4 J
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* e8 ^$ X2 E& d
0 ^' [! d* e& ~5 U' g6 l  _

$ m( ]3 C. Q+ `2 o7 T+ n. Vend- h, o4 K- C1 j4 e* A% }# o

+ _, Z8 S7 J5 Q; z- n, O; |* i, }2 ]to update-credibility-ijl . h$ T* J8 P9 d* K8 F* d
  W( g. p# i+ \) C
;;
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。
- a; H4 W. }" s2 V9 r" alet l 0
: \* f8 y9 g( C: Q% Uwhile[ l < people ]% Y" q: X# G! r3 {
;;
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, H, d; ?" |2 j/ ~8 K
[
& `0 j" |! W) rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 v) h: x/ F5 p& x8 Tif (trade-record-one-j-l-len > 3); O' b+ P. ~4 p6 N; w9 |6 i& }1 A
[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* r) ]. m( W* }7 D5 ^
let i 3
5 f9 ?  q. {* |( D$ {let sum-time 0
( w2 F* f# e& h; F  B$ dwhile[i < trade-record-one-len]
( @; \+ F& H" w& l+ p0 y[; t) m9 w' J  V" w+ ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 Z- ?6 ^1 F* V, ^4 z" P$ o' R, dset i/ I2 ~" q/ R& j2 q
( i + 1)

" E' o+ H) z* \0 x8 W2 c]- ~- ?$ |) R( {# m
let credibility-i-j-l 0- n" _+ N( H9 M
;;i
评价(jjl的评价)
; z; A$ A; l3 ~) x, ?let j 3
9 k4 ~  s( a, V& Olet k 4
4 `0 m8 K4 ^$ v# B" y- m4 J% cwhile[j < trade-record-one-len]. V5 h4 x3 Y0 X6 V9 O  z/ _
[
" n: {  u, k- Y, o, lwhile [((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( `6 M9 O1 K' ~! G- @; ^1 H* D! B) e
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)$ i  m" v3 Q" ]( y
set j+ z$ n7 m$ j# _' x
( j + 1)

  r7 u- E; N1 i6 _) x, L' n" x5 @]5 I0 B9 q+ r$ A. I5 C) u( v- |4 d
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 ))
  D1 T9 s0 q1 f! K2 {$ s) |$ z' K$ V6 ?9 m) D: T
2 X6 j' x! a* M) t  Z8 w; f
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; J5 y1 Q0 G) M  O6 f( V;;
及时更新il的评价质量的评价
5 `) A; l2 }) Z: Eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ J$ [! s( s  r, A
set l (l + 1)& ~' r4 C- E6 Z4 j
]3 v, r  I$ E6 K
end/ ~8 E1 U+ m$ y7 ?/ h, J5 `& u

' f+ X  C2 I( p. b0 ?3 `! R8 Lto update-credibility-list
7 E( S1 n) Y$ blet i 0
8 D5 W( a) r- ?while[i < people]
" z0 Y8 `7 c& M% l* p[. z0 q' z5 A+ |% G) M  L# {* u
let j 0
7 y! h. D5 x- N( }5 P- llet note 0/ b' @8 c5 t: b" z' t1 W9 q
let k 0: d/ a2 l& a" B" i9 ]- O1 x& Y
;;
计作出过评价的邻居节点的数目
8 }0 K8 }8 q4 a5 ]3 mwhile[j < people]& T  A6 D$ Z$ q1 V  ~
[9 Z- X) U" M3 y2 D( t; G* S8 {
if (item j( [credibility] of turtle (i + 1)) != -1). Q2 Z) s7 o3 z& h
;;
判断是否给本turtle的评价质量做出过评价的节点
. b: ]) X! g% g[set note (note + item j ([credibility]of turtle (i + 1))), L4 t2 @6 J3 V" L
;;*(exp (-(people - 2)))/(people - 2))]
4 N8 V* t0 Q( w8 N9 w+ ~$ d
set k (k + 1)# J: T3 X  u9 K1 A7 w3 h. j
]
5 i$ [4 B" q, P; W, gset j (j + 1)
% F2 S3 ~: C% P: ^2 J& ~( @, W) g  m]
+ H! \6 ?) U1 h9 f! h# mset note (note *(exp (- (1 / k)))/ k)
( N5 d, e5 N- o2 @# mset credibility-list (replace-item i credibility-list note)
2 `& a6 F  b* U7 m* R- l% x0 |set i (i + 1)% ^" q* h  J% e/ p; b/ U( A
]" U' E; }9 p# a% |7 ~; |
end. ~" }# r$ N# r1 p% \
- O4 B% t% l6 I3 d4 S+ h
to update-global-reputation-list( z5 b: h, U& F9 h6 A! C: [
let j 01 u: ]  U7 e( x
while[j < people]( z) ?, @7 H: z& P
[
- [' l; L# l# C9 ?let new 0- x6 Q9 |. Y& W0 B
;;
暂存新的一个全局声誉
( T0 s* ~8 r) m2 jlet i 0
' D1 p4 O' [. dlet sum-money 0
* ^. Y/ z8 _  c# j: Slet credibility-money 0  K* f* i% \+ _+ G& L$ H# \: M7 `
while [i < people]6 L) x3 N: u4 N. A: u. z8 l, S6 k
[
' T; y6 J. }; f, O, bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: M( _# X' f5 N1 P3 b: [6 v# gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ \4 I- _9 q, @# A8 u9 U! R0 F( Gset i (i + 1)1 ]1 S5 |  H6 \5 }, a
]
) J# {9 M+ X0 W" s, Flet k 0
( Y' H0 V3 Z5 {1 z! i5 flet new1 0
7 t! g2 T1 V% Q1 p- Y. t% Awhile [k < people]
' b+ f6 v- j) [5 R: V[
8 D! l- z5 y' k4 \0 v  N( W6 H0 bset 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)
3 e& q7 v- ~! c2 a9 G& Gset k (k + 1)& o* K9 L) H) K* d* I
]% [& c; n. ~5 N4 ~# p
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" [, _7 R; y# v) U4 Zset global-reputation-list (replace-item j global-reputation-list new)
9 [+ T9 s' G, j" n. x' H2 K; r5 sset j (j + 1)
/ W' b3 ]4 d+ G8 z! z. []
+ F6 M+ c, ^/ g! i/ ?! y% tend, z! I* R9 |- M2 ^

  ?: ]1 p( P$ Z2 d2 [  A2 F7 q& E7 v6 P' Q1 @8 D# H

7 e& v& S5 d5 r. U6 fto get-color6 w( n9 |) J6 b& D
$ |. b8 z0 @* s- x. ?' @: h) [
set color blue
3 C) o* N$ q- a% q" v
end' V+ R2 p. c. O

0 C5 T$ {1 I8 O0 c! N2 mto poll-class
& }8 X" ~1 w/ D; b/ @end4 M, s! o9 |1 ?: i
4 i; B. E. ]7 X8 \; c, K% c
to setup-plot14 z  {# ?+ L% M8 v+ K
( O' i% a+ O9 x; ^9 H+ e
set-current-plot "Trends-of-Local-reputation"
3 ^" H- z# r5 N; u' n
" O+ x1 r% p3 {: u& l; T
set-plot-x-range 0 xmax
; I- x& _0 V- k

7 d8 g4 ^2 D+ ?: l) M+ [set-plot-y-range 0.0 ymax

3 l* j7 x' Y" U, c7 L5 wend
# m3 n# x1 K6 T6 g3 v: S3 U7 z8 Z1 T
to setup-plot2
0 n1 W5 ~3 [# e5 g% |/ D: Y
- i  A+ e% m( c9 G& q% yset-current-plot "Trends-of-global-reputation"

) `6 d! G& }$ P& ?2 y7 ~# S3 R( `8 {( `1 d. e. S$ `
set-plot-x-range 0 xmax
3 w9 C. y( K' v& I
! g3 e: j3 S( N' g: X7 j5 F' Y2 b' Z
set-plot-y-range 0.0 ymax
3 _& I$ h5 Z9 V8 O) [' T5 k9 u
end2 m/ u& j  {$ J$ ~0 H

! ?* E" B( ]8 z8 V- Jto setup-plot3
* y$ `, f6 X! d  p+ A! ]
/ G4 N7 ^$ e. `4 o7 H. ]& iset-current-plot "Trends-of-credibility"

3 O* X8 {/ E& v4 ~0 L3 g( x/ b5 S( o' ]0 j0 I
set-plot-x-range 0 xmax
6 l0 B  t/ |" x, v  {$ \5 \7 ]

" u% C, M. B: @  u4 _set-plot-y-range 0.0 ymax

/ l' Z; U% S3 r# G' uend6 k3 N5 ?7 K8 y4 V/ k* ~
9 L3 J" L9 _9 n, T, G5 |
to do-plots2 A. y1 {, ^" V, a8 E
set-current-plot "Trends-of-Local-reputation"
' j2 Y5 R8 `9 N0 j! w' @  lset-current-plot-pen "Honest service"1 W0 z: I/ p* e! U7 X0 `4 T- g
end' |- K% @- E( m6 [7 M) E6 w

0 C- H( U5 I1 R. G! m[ 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.
/ G. d8 m; }% E
% g! t$ K4 E3 N9 b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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