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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:
4 a7 c2 n* v9 z4 r) Yto do-business
: o, d) Q$ R& R+ I, k; ~' V- G8 x rt random 360
( t. x" }: x4 t; d fd 1
! E5 k/ W0 b! K; _6 M; F ifelse(other turtles-here != nobody)[
/ a8 @( t5 S5 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.
. o1 q) L3 y2 X$ q& g% A) c   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- E; h5 _/ s2 [% W/ K( \   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( B! F5 W% C8 b* B+ S
   set [trade-record-one-len] of self length [trade-record-one] of self
9 _. D0 [) ~' F! ~4 ], Y# B   set trade-record-current( list (timer) (random money-upper-limit))
- o. r' K) v  A4 }1 L) @) q' j1 A6 W6 V7 ]: ~& U
问题的提示如下:
3 T+ l' P! X& G5 V& l" |
% y2 l( x+ `: }error while turtle 50 running OF in procedure DO-BUSINESS
+ s: ]: p9 q0 Q+ |+ U- A  called by procedure GO! K+ p7 j9 F, ~0 h# R$ e9 x
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 a5 j- t- d, r5 M" X4 H& ?
(halted running of go)
' @  H0 }4 R; O2 G5 g. ~
! Z8 |/ ]$ M+ }+ F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 [, M2 `* [8 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
3 T# Y( W7 r+ n& O% O) h! x  fglobals[+ w6 o6 }) D0 A5 E7 b$ W
xmax
& F1 W; Q3 q, U8 \' U% Aymax
% h, l, k& O4 e: |$ \; qglobal-reputation-list
3 y4 n5 X& l  T6 u  ?3 T- M
4 p' j" G4 V+ ^$ i1 p$ \' [, [;;
每一个turtle的全局声誉都存在此LIST  h* i+ e' q0 s. d( k4 A
credibility-list4 G% J2 `( Y9 b% _8 I9 m- f6 H
;;
每一个turtle的评价可信度" D5 X- U- ]5 ^2 i/ V& H0 y8 N- S
honest-service
$ E$ I2 m  V  x1 D( }unhonest-service
" t, L/ O# |  P0 N# d7 hoscillation7 L$ H; i$ C6 k7 b2 O& F
rand-dynamic
$ }# A- b) ?' S* _6 U) R]5 \: b1 v4 i2 ^' H, K% `

" D/ H* l) {7 Y* C) _( fturtles-own[
  G* a9 s& m7 H: i: {9 \trade-record-all) n6 c/ h: f7 o6 A4 S! f8 r" t: ^4 y
;;a list of lists,
trade-record-one组成+ f: @  ]1 M, }" N
trade-record-one
. S7 v# l  B, B;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) a$ w( j; S) B
+ v  T: k6 H; M( Y2 t  X: z;;[
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]]  `+ X" X% L3 r8 j0 R, r) _' J
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]
$ W8 n( |- J6 p$ T+ 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  {: H5 k8 O. }0 f: G  P
neighbor-total  ^! }! a( N! s% W* M
;;
记录该turtle的邻居节点的数目
, w) |6 i; K. o" I  E) a* t7 Xtrade-time
1 J0 A' M+ B+ G" P! P;;
当前发生交易的turtle的交易时间2 h, Y. a8 l- y/ I( m) e& k
appraise-give
: J7 C# N2 w* R;;
当前发生交易时给出的评价+ z5 L/ T4 f  X. H
appraise-receive
6 E1 d# F  ?5 `. N6 s+ \) T;;
当前发生交易时收到的评价) b. `6 c2 s5 g* P
appraise-time
6 p! q# h3 k! f* @; G;;
当前发生交易时的评价时间" f, L8 x: g! A: G
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; Y* v: e# z' ^, W6 K0 Ptrade-times-total5 P9 X8 k7 R; u* _( L
;;
与当前turtle的交易总次数
/ B+ m3 `" v' E5 \; d( h) h+ M% `trade-money-total% A1 S% g. W% p4 u0 b
;;
与当前turtle的交易总金额; N. N9 o/ X: T8 I6 ^
local-reputation% [: i: X& u2 _9 n5 V! |
global-reputation& D" |- i- i4 W
credibility
+ B- B7 u  k: y) R' |;;
评价可信度,每次交易后都需要更新3 Z1 X& K3 U  g( N3 \
credibility-all
2 y% ]. d4 B- w" _) y6 Q' g. p;;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5 m3 j, k& H; j. O0 r
! t. q9 t3 G/ D9 k
;;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. I. d( |# @. F' f# y1 K
credibility-one
6 p- k2 q2 z; \. \;;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
" I, S% f* y  N+ @2 O- cglobal-proportion. v: t# T9 J; z/ }
customer$ r2 @7 @7 O4 @/ v, Z8 U- J4 A3 m
customer-no3 p% v, E& f" k4 {& Z5 e+ \; B- e
trust-ok
  h& x5 W# X! o0 _! ]trade-record-one-len;;trade-record-one的长度
1 R+ x$ ~6 T+ y- d], ~/ N* g- e1 g' ~) {

) `) r: M# }0 i# u" R( P& p+ d;;setup procedure
7 _" F. q6 a/ \5 E
, ]2 A) r9 V" O( yto setup& B2 E- Y) h' h4 I* ]# u

4 s$ _! W2 X$ u* q+ a  Z  `8 K/ }& s( Uca

8 `$ I2 L1 K2 r% X% I- g2 i) t( s( o8 X1 T' G1 ^6 C) x& O" Y
initialize-settings
& ]1 N  c8 c' Y8 G3 D, T- b
" w" |8 p* b0 u: D; ^
crt people [setup-turtles]
; q1 G+ v3 {: R! w
+ k. G' p9 g: b6 b- Z) K
reset-timer
% d" u  V7 T7 e2 F. S# H
; g4 M& l8 `( L3 V! P8 V
poll-class
: Z& W7 a, T2 Y8 l0 I7 a9 C
' c" {) S7 N* ?( k& {* c( @  h
setup-plots
$ T3 y. h, U* E2 M* n; H

5 s% e( o! @  M; h* A, W3 q1 Sdo-plots

% N0 ]5 k  B$ Z( _end0 d" d6 ^9 j6 O2 y" M
2 g: P+ R$ ?, {+ U- j- r7 c
to initialize-settings
' j5 b7 _; }) q7 U4 t1 e6 x0 `/ c% w% G3 p% ?8 g* R- e" Z
set global-reputation-list []

2 ^6 r6 D- T: N  T) o( _$ J/ J, a' K7 c
set credibility-list n-values people [0.5]

# b7 z' s- t" g3 q% P) s  U) c( N
1 ]5 b7 G* [; s% ?9 Wset honest-service 0

9 w3 p; n' ^- `- [$ _3 h+ B- T( I8 b/ _% C8 G
set unhonest-service 0

- N  ?5 c6 S+ d1 M% Y+ h# t6 |) M
set oscillation 0

3 l' l9 Y3 }2 W9 r
8 ^9 G9 F5 l" H5 `, K' _3 Kset rand-dynamic 0

2 F1 Y* X1 P  Fend
" ?! `0 Y, v- ^! V0 K
; A# {8 y0 _9 I9 Ato setup-turtles
9 `3 x9 c& L$ i! C; P# b3 x* }set shape "person"1 P$ K. \7 B0 ], r5 _3 B
setxy random-xcor random-ycor' g7 F) Q/ A1 o# b6 A3 k
set trade-record-one []1 M$ q  I5 c; i# S* y

4 o9 d$ R% V3 Z. v1 [$ @" z; bset trade-record-all n-values people [(list (? + 1) 0 0)] & s: ~8 J1 ?  ~% G; i  m/ g
2 B) d! A9 `& _5 w% ?
set trade-record-current []
7 o8 t: J8 `$ }4 A: }set credibility-receive []
* M( l! ^, ]' k  j" }1 eset local-reputation 0.53 I! H3 \$ L8 H! u3 x
set neighbor-total 0
* Z! f0 D" K; X- dset trade-times-total 0
$ d8 ~8 a' F9 q' W7 w/ Lset trade-money-total 0
: l, u4 p, m( H3 [' _% _set customer nobody6 T) Y' j2 `9 J% e. ^
set credibility-all n-values people [creat-credibility]
+ s7 [/ e/ H6 Kset credibility n-values people [-1]
, p# l5 f+ Z$ |3 Jget-color* p8 A/ C& k, S
! P% q) ^* Y+ P* n
end8 [# ?, R# D# O2 C: @4 |
( J3 L; E# N* h
to-report creat-credibility- P6 ?0 D& s! W* u  l/ A
report n-values people [0.5]
* R- ]6 c$ M$ P+ N. }/ E5 W. H+ Gend9 M. t8 r0 X( H  e  L; i+ p

! i  `! |( r8 Eto setup-plots9 k* w  P  B; |8 I

( o; y( G$ B+ g2 F: }set xmax 30

6 n  S+ K1 D. \  q) z5 V1 ?* O3 Q  }
set ymax 1.0
2 @; q' x+ @/ H+ ?
1 ~# y$ k! R' @% ]1 A* ]
clear-all-plots
, Y- {. G2 \3 O' h- g5 q' m: [
  s7 K) S* z5 l% w" U4 A# Q
setup-plot1
# o4 ?4 V2 d7 L1 X2 R5 [
( [# D" G8 S0 v8 R8 e5 Z0 w# C: B
setup-plot2

$ G% |$ }$ K" R  v4 K$ b
8 d* L1 f6 j* K! ^4 Msetup-plot3
# Y/ A% H* I6 c4 ]& ~" L( a
end
. q) E; n3 V0 J. P% K4 W7 E' B9 b% G/ ~) ?# r' ?! S4 h2 \0 b
;;run time procedures
3 l0 }2 j3 t1 M1 L9 |! M% r( {$ |) g! X5 T0 h
to go
( Z, Z3 k6 m5 y1 z: r1 m
- _8 N/ r7 h, G' }7 x4 p. Jask turtles [do-business]

1 d: E4 x6 g$ A) dend
5 ~: d3 v3 F6 c) h0 ~& z" H4 l6 a& L2 Y/ }$ z
to do-business - H2 T) t, S5 L! J/ l+ u

( r6 d* d' D/ K8 y' i9 s5 D* \5 E
" ^4 X+ N) `5 _0 I  d/ t* v2 l" \rt random 360

8 S) A7 R' H2 R0 T1 |- I
, [" }% s! ?! ~- w8 [+ b  l" H8 |- R( [fd 1
3 [1 v/ a; d; f4 R9 h: M% ~

; q+ _3 ^  N8 X, c* L# vifelse(other turtles-here != nobody)[
8 p! ^3 p7 Z' ~% W& ?! D) J
7 o, l4 S* y" e; N6 A
set customer one-of other turtles-here

3 Q* R" {2 m4 p; H3 s4 R7 N0 J) a6 }) P. J/ ^3 E5 d1 p
;; set [customer] of customer myself

% \; }* P: D* h2 O0 w
5 L' o' c, i9 Y& Tset [trade-record-one] of self item (([who] of customer) - 1)! k& C! c3 n% x* F  L
[trade-record-all]of self
- h+ w; U0 S4 a( H;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& C5 Z2 t* ^. x  @1 P% {' U* L* I; Q( p: p0 b" E; O
set [trade-record-one] of customer item (([who] of self) - 1)
6 c8 i" u" x7 o$ ?# g[trade-record-all]of customer

% i3 S! E& K$ s, z6 J* S
0 d% Z3 G/ I8 b5 Z8 N, Uset [trade-record-one-len] of self length [trade-record-one] of self

; s' b5 v8 X$ ?; [  n
! p- R6 A9 O1 z* K' P. [3 \set trade-record-current( list (timer) (random money-upper-limit))

# h% S, s* w, A
7 l- R$ ~7 n! u' |. qask self [do-trust]
) c9 o/ Y$ l6 B: ?9 D4 _;;
先求ij的信任度$ a# P8 \& Y. n% [$ u( d9 H9 y2 X
7 |# v0 h+ J# n0 E& [. s
if ([trust-ok] of self)
& `: x; ?8 [) H! p. u& v;;
根据ij的信任度来决定是否与j进行交易[4 h$ u) X3 F; _. U
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* G1 f' }. @2 R6 l
+ v- ~  W1 b  Q1 N[
* ?: ?. z, l% z5 t2 n. F- K
  N' O0 u/ ^# m
do-trade
) L& K+ a8 b" j4 ]

. E- q3 f+ C1 ^0 R* m6 vupdate-credibility-ijl
# a: Z$ P8 Y2 Z

, b8 C: I/ B0 V4 m* Lupdate-credibility-list  I, J' t1 \/ H, [( ^; y; G

0 Y. ?3 Y. l8 R5 ^
  N2 J3 d3 W& R" V8 kupdate-global-reputation-list
8 @1 S$ x2 v& H& B+ N
  f( a6 D, N  [: ~9 \
poll-class
! o9 N+ I$ A9 N6 k5 O

' M  Q  t& Y  W0 F0 mget-color

- k  @6 W9 W6 v5 O  G: y, z2 c5 X* Z8 p  O# U9 [
]]
6 f: h* R: z% ]% C" u. [# J, z4 j9 m* d0 A! H
;;
如果所得的信任度满足条件,则进行交易
- D$ M# t+ t  n. S5 v/ ]! S$ I% u. [$ @; d& q
[
3 w! a' F8 {* ?9 a

8 A/ g! p( a  i# xrt random 360

7 X8 X. m% q; P5 l9 n4 t
) X, F) D% R2 Rfd 1

2 G$ `5 O/ }" a! U4 f0 y* W9 A7 |: \: R" A. h( \( S; W3 K) n
]
, E$ X3 I7 n$ R) z, E
9 r3 W. U; |! ^) L3 c5 r7 M
end

7 a' m) Q7 C1 s2 s! L3 ?" i! Y7 l7 t. [5 r7 e
to do-trust " F* v3 ?( U) N5 V% s
set trust-ok False4 H' m  D) K) Q

' j1 g/ B/ Z( [( O  u- d

" I# K& B$ y& ]' r; M! v) n/ slet max-trade-times 00 U. K% U3 M( x/ b3 a) Z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, ?- C9 \7 o! j) ilet max-trade-money 0  H, c$ r0 F9 ?" C# n  ^0 K8 m
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, ~7 ?" D/ [& C" Mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ I% C9 [4 R0 L! `! B- Y
; w2 m+ v  ^1 D$ J9 R  s
3 r- H* o& w* Q4 A* `
get-global-proportion/ ?$ N# u: o, i8 A$ s3 \7 k7 p/ [
let trust-value" @' n! }  a3 ^4 e7 v" O
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)

) ~* g; G* t1 K  d0 }" O6 Dif(trust-value > trade-trust-value)
. |& {2 d) k% k3 T1 P! {9 J! Y' ~! T[set trust-ok true]
) b* o$ z* T! F$ r! {end1 t  {% i2 P+ \- O4 R7 [

5 ~4 z' b, Q2 m! s9 E4 Y$ a; Oto get-global-proportion. J* L, _9 I. a/ }1 J# K
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  j; R" }2 k3 V( Q3 J4 J[set global-proportion 0]3 w: y# B% V# M3 G8 y8 F$ G
[let i 0
* [9 \3 o: a& N2 U1 [; b0 Clet sum-money 0! _* M+ Z# G( w' m+ j
while[ i < people]
5 t9 S  k0 u& z[
3 d7 z" n1 g  [" i1 X  T) V: J; Eif( length (item i
: T: n& I: Z8 y& ?7 U$ |[trade-record-all] of customer) > 3 )

) a6 ^$ ]/ |4 E3 n$ X2 Q. S0 w( q. [# B[% h2 o# u( ?7 G* a% k
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 I- R+ n; ~2 b]) }# c7 T0 z- O- r3 l$ E
]
' k4 h, w* w( Flet j 0
" ?# m& l$ R# h# Plet note 0- E8 E! m8 v$ T  M4 Y
while[ j < people]' d; C1 [, p8 q' r: W# D# \
[. i' c: a+ N' B3 J% r+ Q  U
if( length (item i, \) p* d4 W- R, x' K$ h
[trade-record-all] of customer) > 3 )

1 V; _# M6 R- Z! X2 M6 \, o[2 X" u: X( h8 B. |; W9 I
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ k8 Y. o  k: ^6 t+ W# y+ o( ^# p[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. @7 T& |2 h5 K! a# U7 i: ]5 B[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ H- ]1 a: k' Z$ C& Z
]
+ X) ]4 U4 d4 k1 P% s& K# ^' q]
2 V) h; z% B% `( ~& Aset global-proportion note
* ^# ?& e  }9 @]6 R! C0 o" X3 e* y( ^5 v$ w5 B
end
* U$ }0 U- q) M3 b" a: M6 x( `9 C5 N5 @) Z: i, [
to do-trade
: m" Z. P9 G: h  o( u. n4 J6 i/ c;;
这个过程实际上是给双方作出评价的过程
; k( ~' F+ q2 Z5 m# F% Z4 \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& u2 n7 P+ U6 r. N* z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- ^) v0 S9 c+ y& o* x
set trade-record-current lput(timer) trade-record-current# j/ U, g) W) Y2 U
;;
评价时间
  w0 N" z8 e% z) uask myself [
, p  v- f2 t" O( W2 v1 [7 c; [# gupdate-local-reputation
) R) `; n$ W' R0 {- j/ q# }% F# R4 @set trade-record-current lput([local-reputation] of myself) trade-record-current6 a* S5 j3 u" T+ H$ T7 t
]
3 K, R; b2 n! U2 `. ^( Fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 J+ C8 U7 x- b( _5 Q( u;;
将此次交易的记录加入到trade-record-one& {! K2 @) c9 q/ Y0 l. o, X
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 J$ n8 u8 H  x* C9 S$ ~. K* `
let note (item 2 trade-record-current ); ~& C# G0 |8 G$ U
set trade-record-current
$ w0 E! E. E) S0 q5 P  \(replace-item 2 trade-record-current (item 3 trade-record-current))
# I5 ^$ v" ]' _
set trade-record-current& W. U7 n  V4 c
(replace-item 3 trade-record-current note)" b& d$ x' t+ }/ e! s
7 p7 e1 ?# [. d/ S9 O; \5 [6 t

9 g( `# y- R4 e6 e& h9 iask customer [
5 i+ @6 {( s/ S, m4 k0 F2 j! zupdate-local-reputation7 L: V6 w( o7 h. [) `3 U  \
set trade-record-current( n, k: }: O5 u: B1 _
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! R2 W0 G& J. G2 E& B7 W. s( _) a
]
  |  J2 A) |5 M* A' L( s! V7 P) m! [. L# i5 k! G7 |

3 X$ H  t! d- L) |! a& ^) Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" c& _& ]9 ~$ Q  Y4 n
6 l; h( F. K  n6 n; o! r/ x" w
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 @7 A/ V5 ~3 F: a# [7 T  z3 G5 }
;;
将此次交易的记录加入到customertrade-record-all
0 B2 O8 I4 L# Q+ Q9 [% yend
. v) p( _( R: ]
) c& t3 H% g( gto update-local-reputation
5 [# q- q7 [& w$ g; Fset [trade-record-one-len] of myself length [trade-record-one] of myself
8 J# o7 P# M1 _9 q8 N+ D
, D& x! R! B2 R6 ?+ t" @1 R  [2 d2 ?! ~# s, {8 f7 K! k2 N
;;if [trade-record-one-len] of myself > 3

) _/ X$ x3 Q* Z5 D: bupdate-neighbor-total0 b2 _) i, U8 E, p* n
;;
更新邻居节点的数目,在此进行9 R/ t# z: w- f
let i 3" P: a8 N* ^0 \) x8 \. `
let sum-time 0
( K0 i3 t# z# i3 T$ d( Awhile[i < [trade-record-one-len] of myself]
: t$ Q8 v) u- t5 p- |0 t8 O6 K8 N[
$ g% E- f% l. v$ r. H( Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 d% d7 }; S4 {" n8 E2 n
set i
9 t8 J/ p2 t- T( i + 1)

+ o; u  c. O$ \2 f8 ~' J]
3 [6 H3 k* f4 d$ Qlet j 3
0 I+ r3 u( O: s% P: c' l# t1 Ylet sum-money 0
/ d# W  e# _2 \: G3 q0 h4 O; y" ?1 jwhile[j < [trade-record-one-len] of myself]6 o4 e9 H+ M9 ^) ~. T  `1 Y5 T; c
[
" L& C+ O6 J& ]! f& C% gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)  \3 k5 {5 W: P: [
set j
( d0 K3 l! B! H% }' T0 O( j + 1)

7 U- C0 r5 W, Y7 |+ ^; o8 s], _# A$ p; U, A0 X5 t
let k 3
" q! X( @7 d3 f. U& clet power 0
& q- i8 Y' i  n# W9 ?" X1 N6 Z8 s* [let local 0. ~* \$ d7 R$ [1 d% n
while [k <[trade-record-one-len] of myself]
4 a. c9 t7 W" `* B& s7 g& _[
4 b% M) f% U# x9 {3 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) . }/ K8 b1 }9 _  X! N# l- p
set k (k + 1)7 E9 E+ b. d9 H/ S" q) K9 f7 ~) r1 e% F
]# i9 R! |( a8 z# W# N0 V$ q. F
set [local-reputation] of myself (local)# ]3 t8 q- f# g& A2 b
end
' e7 A8 m9 L# x. `2 D+ ?
- ~3 U. t* s- u" X" v. S, w8 q* gto update-neighbor-total* u# l8 _  L5 P) b

7 p& x( d7 i& ~7 W( T8 [if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 F0 ], m" \& J5 r/ F
- Q7 l8 w/ X0 l+ C& y6 G9 q
3 d9 _: K5 G8 a2 K: d8 H% J. I: ~
end+ |# G& W8 R6 O" N8 I

1 ^: ]- K) @; y2 Oto update-credibility-ijl 7 u* K7 k9 i3 f. a( }

5 A; b3 B1 H  G) U1 P' ?;;
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。
* u1 U) @" {. x  x9 xlet l 02 H' W, s* y! }6 q
while[ l < people ]% U; N" G5 g% p; E  R1 `: S
;;
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 t. R8 E' ]! Y! x( W( N9 L[# q7 u. ?! c0 y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), K1 O7 f6 Z: c  ~! [
if (trade-record-one-j-l-len > 3)
. X& P2 U3 N" Z# q, v[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-one6 q& ^& F$ |3 \- S7 ~9 r
let i 3' p+ X# E" J# a  Y2 o
let sum-time 0& k$ x7 T) e8 u  l4 [, f
while[i < trade-record-one-len]
5 w1 z% q) H* U2 F7 J[
) H* ]9 c: C) wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% L. P0 ?( ~, D5 u5 t( `3 f( ]set i4 {* u1 S# ~* g* p  q
( i + 1)
) g9 e. B* ?6 t- [& B" t! Y
]+ d! k0 P9 N' X6 v2 {6 B
let credibility-i-j-l 07 T- D' k. k! G0 A: Z/ }8 e' T
;;i
评价(jjl的评价)
& f9 c9 t" d( {let j 30 f: ~- b5 E* J! Q& S, ]
let k 4
9 r; E( M9 k8 i2 w. a0 owhile[j < trade-record-one-len]7 a: x+ B/ h! J- j6 |
[4 N+ z1 u( N* d$ D4 i$ F
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+ H- {6 B3 z, [( s( q; p
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)/ j5 j& l9 A4 E, j- U* i0 n& o
set j
" E9 P8 Z4 d) D( j + 1)
7 G" \1 ~. `0 v$ B- _' L9 y
]
8 u3 A* t6 X1 ]6 Qset [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 ))
& [3 i8 ^( @7 ~7 n( {6 M  R, y! J0 F  e) S1 P
' s4 ]. d2 T( `, ^
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 w' U! j5 N# g) o- d2 W7 P5 \8 j) k
;;
及时更新il的评价质量的评价  x* u) j7 `- s" ^
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 l% V) O/ F7 P+ }set l (l + 1)
7 o8 B1 p( Y# X! L3 X- o]7 h/ Z6 k$ c- n( V0 y
end- D+ T- S# j" S

* P8 M; X- f: R% L; u5 w! s6 @/ ^to update-credibility-list- y! v! ^$ M$ d+ d
let i 0
( C9 u) f- A+ |) Q2 b. Q5 V$ h( bwhile[i < people]
0 v7 i7 {% L& v6 K; a) {9 C- }[
3 r* B# m# A3 V; K1 rlet j 0* ^2 Z4 b5 ]# Z( m
let note 0& d% Q, g! g8 D) j
let k 01 Q+ i( r% q3 J! Q/ j2 `5 F2 e
;;
计作出过评价的邻居节点的数目  ?8 M+ e+ j, f$ _* |8 g! X9 _
while[j < people]* L5 E" S; _' a3 s
[. O6 m- r9 x. P
if (item j( [credibility] of turtle (i + 1)) != -1)9 Y- A! v2 f% ~& E1 I
;;
判断是否给本turtle的评价质量做出过评价的节点( j6 ^+ y- D" {. B& `( b
[set note (note + item j ([credibility]of turtle (i + 1)))8 p, x& d$ h# n1 G: A. L) I3 A9 S$ i
;;*(exp (-(people - 2)))/(people - 2))]

& ?( J6 w; Z* L; [( mset k (k + 1)
7 a# M9 F+ m; d. n2 V$ z) c]/ |- n9 q& U0 O4 F4 b5 r/ j
set j (j + 1)7 D. _4 V4 k! h" b- j; C( I  u
]8 b& d% B7 P0 [1 S+ Q6 N) S, L  L! N( w
set note (note *(exp (- (1 / k)))/ k)8 {# g$ {7 Y5 S( T8 n! k: a
set credibility-list (replace-item i credibility-list note)
4 o! `3 K+ r; H1 Dset i (i + 1)
/ r; ?& P7 Y: n2 q9 R]9 k5 o$ w8 R4 y, n' ?( J0 Y
end
& Z# D7 D! f. K' j  I2 A2 G) f4 N' T- `( l
to update-global-reputation-list& G6 T/ B+ u( v$ P, u
let j 0# i0 r5 A# V# `4 \: S
while[j < people]6 o% U; Y9 B- C. k! s
[
- c5 D7 ]! `; Q1 Y* Clet new 0
+ ~# c! x$ D! m3 {;;
暂存新的一个全局声誉: j+ P2 e! j) z
let i 0, K$ v9 a: q8 E
let sum-money 0$ o; e7 y5 J2 \; @& ~) @
let credibility-money 0
# {/ m) F% S  \- s- ?0 ^) o$ ^while [i < people]  |. j. j2 ^3 i1 f
[
$ c+ \" w$ D+ b5 K  W" j) Cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 z/ q1 ?+ O- Gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). ?8 F* H- N6 B) `* w% X
set i (i + 1)
: D) a# f3 C( w: g]
; @1 T% v- w- {0 t; R* a6 g- [let k 0
% ~* _% M. o% wlet new1 07 F0 E' E5 y8 i6 M$ P$ {
while [k < people], {- ^( y6 s) q# l$ |
[
0 U! W# F4 R5 j- n9 v) pset 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)) k  B# V6 Z! F  ^  b# x
set k (k + 1)2 i! o0 p: T# b- v0 k
]
3 m1 _' ?0 P" v( L, }set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- ?' E. }, C6 d: B; lset global-reputation-list (replace-item j global-reputation-list new)
' S& Y) m8 v. Z$ `! qset j (j + 1)
. I2 ~4 m4 ]6 e; @* w]
0 \& }  L7 k6 f; _4 cend
- d) e0 {$ q  {2 w3 c2 B; C7 h" C+ \) V5 J

# q1 i2 ^; e9 E# e" B1 q: g
: E9 Q' S& f* q4 U7 ?  Zto get-color+ n' }7 f0 k2 t; L
7 E( S3 s: z7 D. u/ s8 S3 j
set color blue
* i& x3 K2 G. I% m
end8 s) ?+ ]& v  e& p$ r6 x& X+ O
" A7 I5 _/ h  ^
to poll-class
; @4 p8 ]+ f+ D+ v& \8 lend1 H: \" X$ j( U" T
* R8 [8 H( m8 d6 {) M( A4 k
to setup-plot1: k6 I+ o+ f* H, |: f* f
6 K( Y4 B" k. f  P+ n, i0 F' ~9 v
set-current-plot "Trends-of-Local-reputation"

8 r4 ~" T5 D  D9 p) ~: e  c
3 B6 Y4 ^! Q) x+ x+ @set-plot-x-range 0 xmax

9 `7 M& S/ j+ N4 E% w# a' A4 |7 i7 D& m( ^( C/ f
set-plot-y-range 0.0 ymax

5 i( {8 D' H$ E( x: H1 L7 cend
& h- t& W% U8 Y6 K
1 w/ C+ @2 ~3 n- {# o' }3 [to setup-plot2. k# Q% G# i: @

6 D' Y  [, z! h1 N0 ]' oset-current-plot "Trends-of-global-reputation"

3 T+ l- i: X! n3 n3 |1 f9 U9 g* ~- F0 U# N
set-plot-x-range 0 xmax

! b/ I: |& `! z
8 J6 ?1 a" z% M9 K9 K' d$ n+ j( ~( bset-plot-y-range 0.0 ymax
; z  i* G# a$ y: a
end
" Y+ _& R5 S) O6 D/ b
' ]! ?3 g6 u" O" Z* Jto setup-plot3
" w) v) C* I$ E! m: b5 x7 j
9 R$ ~0 U: D( E/ oset-current-plot "Trends-of-credibility"

: N. q- Y* I( w% X% r4 n
* |7 ?8 C0 O. q& `' @set-plot-x-range 0 xmax
0 l' ]$ I7 z+ f+ T4 M  \
; q# j3 P" m9 q
set-plot-y-range 0.0 ymax
2 q7 \& g4 {9 T+ c! j
end
+ ^8 _% ?) h/ B" X  s8 U) m
# ~8 }4 a* Y1 E# z: t+ P6 Fto do-plots
$ _$ z( N& P% r: @0 p* [+ `* Gset-current-plot "Trends-of-Local-reputation"" b& V1 l2 A$ K
set-current-plot-pen "Honest service"/ q7 o( A3 M. \6 E
end
! ?% V" B! r% \" q9 Y" {3 G: x
. A7 A! X/ e; a% U  j  D[ 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.
& m2 [& c/ T3 `0 W
( X6 g5 U9 `2 D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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