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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 l8 |7 _4 d% \0 X+ p7 L( Rto do-business
0 {) y! U% s/ R3 U& g: o2 ^- n  O rt random 360* W/ |2 B1 H: z2 P6 j3 G! D
fd 15 s9 x6 Y, q- u% X! D! M
ifelse(other turtles-here != nobody)[
4 |& n5 ^; t& H$ t: q/ E   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.) F' z, Z/ w6 `1 D3 _* a, o
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' G; f" [1 ]% f, t   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# [" r6 m3 k& t7 i2 D   set [trade-record-one-len] of self length [trade-record-one] of self
# y. U1 N) W: h, ^5 k* Q% ^   set trade-record-current( list (timer) (random money-upper-limit))6 E: b" ]( z: V2 C5 B, F

8 `# u: Z  g; Y* Y问题的提示如下:% `2 ]6 w- n4 I# K; |
# ]7 y9 v, b# N, a$ C0 ]& F2 p! H
error while turtle 50 running OF in procedure DO-BUSINESS
' T5 u! a0 R( V* G& }6 X  called by procedure GO
& x; y' @, ~3 MOF expected input to be a turtle agentset or turtle but got NOBODY instead.4 ]+ `; C7 K- i6 J" C; s$ }3 D& J
(halted running of go)4 q- Q( ]" C* [+ `' i' Y# {$ W) Y
  Q1 F7 R/ }. }! l' A: H6 P! 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~~
0 R  O+ y8 ]  d9 ~' E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  j# ]) z. d( u: u& t$ x
globals[# Y5 E6 W  \0 @/ R
xmax
  C; k! v+ l# F9 A- ~/ kymax
5 ?) I+ B5 \- o! Kglobal-reputation-list' Z8 `$ L. K" L3 _2 f, J3 m, [

1 m$ w: _4 k/ |8 s) \;;
每一个turtle的全局声誉都存在此LIST4 P! B9 P1 L# ]' c2 S  p/ U
credibility-list
2 m7 L2 |7 l  Y" Q2 D! [' |- [, W; B;;
每一个turtle的评价可信度) Q4 _2 ]! ~& d; H2 t; i3 ^; ]
honest-service9 I, u& I+ Z' {! `5 T" J
unhonest-service; x3 m3 p1 x( p9 `5 Q" X0 R
oscillation+ r5 l) s5 E1 I3 Z% O  K1 e
rand-dynamic4 R1 B# v- f8 p1 t! D; L
]' F7 e, f: O7 t1 E* ^3 T/ S+ d

. d% @  i5 l! [turtles-own[
) d% d: K+ q- X1 x+ vtrade-record-all
* `& }; w1 p) k7 w5 ?  G3 Z;;a list of lists,
trade-record-one组成3 ~6 {& E3 ~* H' F
trade-record-one
0 r5 u. e( D9 `; M# t# N" x( z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 e9 r7 w7 a- F- ]6 ^/ q9 F) m

/ z. K% M& ?; ?$ r3 k8 P/ q- 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]]1 ^) y! p5 V, S- S  _" o$ G* B
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]- `) I* N0 Q0 k: Q% p+ F  [. k1 r
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
' X3 R6 {  i& [5 E. y8 h! [! t- R+ o# Yneighbor-total  B/ Z. b9 r0 ^) L! C9 c
;;
记录该turtle的邻居节点的数目
- p( I) F" i. \, h: Ztrade-time8 o3 `& P# [4 w) _
;;
当前发生交易的turtle的交易时间
- o/ y9 Y( s; T! G7 sappraise-give
  }5 J. C! i2 N8 ?' \; I% _;;
当前发生交易时给出的评价3 [6 P6 E' a4 \5 c2 ~' o
appraise-receive1 e# z1 H3 {( ~, s
;;
当前发生交易时收到的评价
6 y! Z+ i- B& M% Aappraise-time
( a7 J: Z- j6 q4 _, G6 A# }* l;;
当前发生交易时的评价时间7 u  h0 ^2 N( T+ v* g; C& H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
% l* X' Q: ?5 H2 Ftrade-times-total
& z/ G5 |3 f0 e. ^;;
与当前turtle的交易总次数0 ], d1 ]4 x0 F
trade-money-total- O, B- i$ g9 f! N
;;
与当前turtle的交易总金额/ e6 V3 M/ r% E1 f
local-reputation
8 t) j6 i/ j. Q  ?$ k  B9 e" r1 Aglobal-reputation% H& F3 e% q# b
credibility
7 |# T0 M1 }. S+ \0 Y;;
评价可信度,每次交易后都需要更新
) j% U# P$ \! ^$ ], mcredibility-all
# ]7 V/ P9 V1 z) M8 W" @;;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
; S! t5 s0 ]6 i" m3 a- L5 ^
' V- R9 v( M4 u/ b;;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
: B- h+ E$ o0 T1 Y# Ucredibility-one8 M/ V0 M) z3 N! @6 H
;;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
) e9 T8 e- K( D+ O- S1 u- ]global-proportion
* Y! I* C+ p+ Y+ [4 Qcustomer9 W# A# K8 q$ a. |4 k; x9 v
customer-no1 E& d4 Z& |( b& F$ T0 R9 B. q( ?
trust-ok: U$ o/ t; s. E5 \  p3 C& G
trade-record-one-len;;trade-record-one的长度
: x6 E7 l' f9 ]]
8 I3 N* M! u- }' u( L
: \( A( S  P- U* V' N;;setup procedure
! V5 o2 }# |2 e" `5 Y6 e$ [. [
! }& m0 v  P6 ~1 [' N4 kto setup+ I! Y/ U9 D% E. w9 q9 p& O% V, a

$ Y* M; J: k, C" l1 q7 [/ Sca

' s9 T" V5 K$ D3 g# y( c
9 u" k7 |) C* ?6 @7 P/ a$ Uinitialize-settings

- M5 \" v' Y" {7 n6 e
9 M! _5 N" Q7 s0 Q1 `, r8 `7 H- y# P3 Acrt people [setup-turtles]

! e& L$ P# l" L# W$ D7 x' z( k% K5 o' |
reset-timer

+ k  i# R$ z' V! }2 {
( }  D+ X. f7 F1 G# rpoll-class
' X3 q$ `+ f( q2 u" |8 p; T

# j' k% X1 H8 O9 ~1 G" W( F  Qsetup-plots

1 O( X. K: b$ n; g3 y+ f# T: v. d, ]6 t/ h: \  i! v
do-plots

8 T2 X& ^1 L# Uend
# Q' E2 H7 ]  s9 L" C( ?* h) B
: w6 b8 V6 x* E& l5 M# zto initialize-settings
$ `. }7 J# B* Q9 J) @8 J- ]% F
: a1 V, A6 i. l0 |! v% |4 W  B. {set global-reputation-list []

- G' I  |5 V' `$ ?# M' G* T
0 M/ ]( L! O$ D3 r! w: k6 {& bset credibility-list n-values people [0.5]
: F. ~- O: B! C- q9 u% ^2 p
$ A1 n( q3 ?5 I( \% ~
set honest-service 0

& p1 t$ M% ?2 N. e) E. C5 s. r5 o2 |# y; k  }+ p5 r& V
set unhonest-service 0

3 l) z, |4 E& u4 N/ p
& s3 N+ J  m% g4 J; y$ W4 dset oscillation 0
# C4 x3 K* k* [& K
4 m/ Y" r" \6 ?7 C3 f7 }. b3 J3 G
set rand-dynamic 0
! g  y  T2 U; N) C. p( L% ?3 R# n: K
end
" k9 _0 W7 b2 W4 P' a- q
2 g3 [+ A9 O: I, b" o7 u. j, [& {to setup-turtles 2 @3 {  ^3 N  E8 w( G2 y5 X
set shape "person"
7 ?0 @& z$ c& k" C% g8 osetxy random-xcor random-ycor
7 H2 F: P' U, Q- ?8 t. Gset trade-record-one []1 x. B1 O  ?- ?
% q2 |0 z) I' S$ m% u9 Z
set trade-record-all n-values people [(list (? + 1) 0 0)]
3 a7 P% T  h) _& C' {# H

3 |: |" }. X4 `8 }. J7 f: K+ oset trade-record-current []
7 b) u1 g# A. ^, P  e% i0 Dset credibility-receive []
: O- [8 V7 b$ e0 [3 Lset local-reputation 0.5
! Y. R7 I3 p' Y/ N. p! Dset neighbor-total 0
3 W% [8 N7 p$ s8 m  ~% oset trade-times-total 0
) B; Y- ^& @) u  G8 j' K( tset trade-money-total 0# V: [9 I' K) t1 N( y1 N/ E
set customer nobody
* t& A( ]' H6 G/ N6 |! @3 Y# m+ Yset credibility-all n-values people [creat-credibility], a7 z) h9 @7 L5 R- d1 L
set credibility n-values people [-1]
6 @" e2 O  R. Qget-color. H8 ^2 R$ B3 j5 C) k
3 s% G2 ~0 W7 H( V" N1 ^& `& t
end. b) p: G" Z9 `5 ^0 W5 {

8 e% K- @) X6 d5 tto-report creat-credibility
! d4 ?" D, {8 V. H/ breport n-values people [0.5]
( l2 R4 F' D2 O* v: F9 Xend
% X& O! v' E) p) J$ k$ w2 [4 o
9 B8 w7 G. ^. M& q' Y! X$ z6 ^) wto setup-plots
. @0 M6 ^* e' C0 H  h# S0 v1 o! [/ S4 E! d" y" L" U
set xmax 30

. k8 u  b/ S5 u/ z% c  l3 _( Q
) C& ?6 {0 L$ Y3 Qset ymax 1.0
- {- N  i% J& k" I) K4 o

( C( S2 a) `' c' ~# l* {+ h2 {clear-all-plots

, y6 M: F* d5 E- X1 v3 m1 c0 J7 R: R; [6 {& v( D* [9 F
setup-plot1
1 J! C6 X9 ~* j% U( C% o, i

' s; }% c1 U4 O1 P) W2 ^& A7 I8 ]setup-plot2

4 g  C: C* t2 x! O- {  q3 i) v
) O0 ^, o  T6 F2 s: esetup-plot3
- D6 f: p- A% i6 ~  q% u
end
; g3 U+ N* h2 M7 s0 Z0 q8 y; h4 |, D, r! v6 {. S0 u
;;run time procedures
/ F4 g6 i7 Z8 L5 y) f. l4 S9 d" H
to go
' j7 ?1 Z$ {# `  {6 \
6 A% o: y  Y- N9 i" w4 R4 b; Zask turtles [do-business]
/ W; R# ~& C# G* V' E; C
end; U2 e& w. M2 V. `) H7 d

& z* b5 g# ^0 I4 p4 nto do-business
6 D+ ~& g( o0 O. h8 P" N) [: A

; v' ?: R' e2 b! m. j) w) s& t# E" f4 w8 Y" u$ \8 I. n6 U1 S
rt random 360
$ C1 D2 Z; _* M5 v7 ?

. r8 v5 ^* A- \" Y9 |/ K5 O3 `0 Y! ^fd 1
- a! y" \7 |. e" O3 U6 P* L
- z- o. l: h* f/ d
ifelse(other turtles-here != nobody)[
+ P0 K8 S' M& I

) i; `+ [- f) i. S9 P" i) N' hset customer one-of other turtles-here
) }, [8 l& H. N
( c- E9 y& }8 @$ I0 z/ Y6 N$ M1 a
;; set [customer] of customer myself

( N# X" E4 d; S" V( T" U$ _0 o
+ b9 V% k3 S% K* t2 @- tset [trade-record-one] of self item (([who] of customer) - 1)# i" x% Q7 `% k  o
[trade-record-all]of self" t6 y4 b- i+ ~) X3 q2 s
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" S& R: t2 a7 G, [- _( j1 d2 ?9 `6 r
set [trade-record-one] of customer item (([who] of self) - 1): b! D/ ]9 W8 @' `9 N) v  t
[trade-record-all]of customer

3 o/ ^7 e/ D. A  y2 t3 T$ }5 ^7 V  u
set [trade-record-one-len] of self length [trade-record-one] of self

; L8 P/ A4 {! u
# z8 i, Z/ @- w3 z. [6 h6 Bset trade-record-current( list (timer) (random money-upper-limit))
/ P8 x9 o$ l9 G. U
9 F( M+ Y( A+ g8 [8 L) J
ask self [do-trust]3 P2 l- ^$ \# T4 E/ w
;;
先求ij的信任度4 Y( m5 M/ P! c/ g. I5 J5 |
0 M& k/ L" {9 A  {0 I& P" y
if ([trust-ok] of self)& A! P% ]1 _$ @7 t4 }6 x3 b; m
;;
根据ij的信任度来决定是否与j进行交易[
0 {2 {5 a8 r9 ^' Aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 U! c9 V3 G+ @' i6 ^

3 w; P* A# v' @% }[
0 M! G' V. F7 q1 d* Q( K/ a
: o  W4 c/ M8 k2 J/ B  F
do-trade
  G- `& Y6 M# P  S) ]
3 L* G9 }3 j0 O. Y$ y' I7 V2 M
update-credibility-ijl
; @) Y7 K: z* k$ x5 u! ?
' E4 @  m. L" J  g( `
update-credibility-list
; Z! u  R! H& m
5 k9 S. u+ v+ z' s
: @+ T2 S& v' h* u
update-global-reputation-list
7 w: d% a* c3 @! X$ ~" L

& P, w  P* M, O  D2 [9 T$ p% [9 L; Zpoll-class
' b7 F: X# O# l! w8 k! ^! L) a

+ u4 P( s4 E* W9 t- _get-color
* P6 B% j- f  x6 M+ u7 f. E$ d# p" D! h
6 j% l3 Q) i- X2 a/ x+ e3 [
]]) i6 R! g# |0 s6 v' u

6 Q0 p$ x7 g" ?/ s  K9 X0 [  Q;;
如果所得的信任度满足条件,则进行交易
7 Y, L0 w  d+ S8 P
& _- ^4 x0 U1 ]2 k0 @: ~6 g[
6 [9 ?9 f. u/ v6 o. C
/ l4 i! `1 W: ?" H0 c
rt random 360

0 }; v7 j& x% \2 L: d
* x2 E( s0 h+ J( f& K  l/ j7 u9 ^fd 1

+ ]" p+ _! O4 Q/ d  @1 }! ~% g8 b" a
]
: U: _; L) m6 B% i
. ^8 |- Q- s8 J5 D
end
( g5 F7 y9 q- M& d& @# c% G
1 m: B8 s' V- S0 B
to do-trust
, j  Z0 s& Y  Iset trust-ok False- D! x0 j- O  }! x6 J

- ~9 F, q0 X6 J) F4 D
0 w5 v0 E5 S) o7 L2 j
let max-trade-times 0
9 X$ y: c4 g/ v4 t. K3 M( _. lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 a" F" n5 V5 C- Y. @9 g
let max-trade-money 0
1 k6 M/ |% l% @" _2 _7 O; ]. H- V- Vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 w, J7 G4 `1 o% R2 J
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% i7 v+ }( j& M, d& c% i; J8 d: S0 u/ C

: t/ d/ p! G9 J$ W0 a; R- Hget-global-proportion
& M# x8 b& E9 i  {let trust-value3 B5 f4 }, c  U; p7 @" _
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)

1 J, q& d9 J  E' Y. z, Xif(trust-value > trade-trust-value)% }( k& {6 n+ h" i% _) N
[set trust-ok true]1 Y2 Y8 w. |9 M0 G
end
* x, w6 B# w# H' R( K$ n& s4 M8 V, B' [: X
to get-global-proportion6 f( a5 G/ g$ z: k- x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! R4 W6 \" T- f1 j: o  E[set global-proportion 0]: O3 H; s  V* K# i7 A7 P
[let i 0: v0 F$ p* @- V5 B
let sum-money 0( `  j$ S+ S$ A9 ?* |
while[ i < people]. k8 M* \/ O+ h. }5 k
[. z/ M- R' e+ X& r) u7 \
if( length (item i
# G4 `# Q! H* U2 ]# R2 A- @[trade-record-all] of customer) > 3 )
% w1 ]2 x( y: u  p
[
; Y6 s* B) w8 ~" ]0 R2 p  N4 f3 w! pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 [) K1 u. i& m' i& t& `]
8 u  ?$ G1 D4 n2 q- `: I]
8 T+ w- D, ~. }2 R( blet j 0' q0 d; d  f0 h) \
let note 0& O# G& l* @7 h" |1 B0 m
while[ j < people]
# z: D/ ~, \" K" B[& K5 h1 \% A/ v" H5 B1 T$ _
if( length (item i3 z: I% N" D) ?  n1 M
[trade-record-all] of customer) > 3 )
) B1 Y1 S9 t) `3 t% q9 A- C5 y
[9 z4 ^0 B9 L# z  s, ^
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ x+ w. l5 `7 {, I8 }' I' s8 _[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' ?' s3 W; J/ b4 x0 S2 L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ V. D* ]( e+ [- U/ Q, b9 X8 w5 W
], e5 k, P. H( C+ `$ n% E
]
/ g, r: y* u7 K4 S) Jset global-proportion note
: G! d5 R- Q5 f]) P0 j* I3 P' a6 V* k2 L4 D+ x
end+ b: {7 M* @! C, p% |" J
. c6 S& T5 r  n
to do-trade: e! U9 [8 ^' Z8 a
;;
这个过程实际上是给双方作出评价的过程! G2 e- B! g# K( f0 }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 d- j; d  w4 \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 d8 o$ L$ ^. m3 e: y9 w
set trade-record-current lput(timer) trade-record-current+ n2 w3 c  w% L$ Q2 |
;;
评价时间
# G' p7 |, `2 Q6 l8 Gask myself [
. m% S8 v' U+ [update-local-reputation
2 U: s( _! B! X( M# tset trade-record-current lput([local-reputation] of myself) trade-record-current
+ s( w. t( L) M2 |# T! d7 S% k]
' P  @- p: c& V  Jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 a' M6 P- x# d. |
;;
将此次交易的记录加入到trade-record-one
+ a* U# M9 U# V/ ~4 eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 t+ P4 o7 c: K6 I* ]+ s- \let note (item 2 trade-record-current )* P  c! }& l3 J+ F
set trade-record-current
! f: K  ]& T5 X$ z2 G, V+ ?3 ?6 ]& k; d(replace-item 2 trade-record-current (item 3 trade-record-current))

+ |  e4 ~$ U; I  }: Pset trade-record-current% v3 n. r0 n: e% \2 c& [, T
(replace-item 3 trade-record-current note)
6 X/ L2 C' l. G0 R9 m- C
# W% N# a/ I8 n9 b. t

! q% J9 V6 W% N$ o0 i1 Zask customer [
9 S4 @' b2 U" C# hupdate-local-reputation
' P2 s' a* i" Hset trade-record-current
4 X: x( n" X8 m: p/ O  m(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 q( f* L8 N/ e; p9 A/ P( t* g]
( j1 _% b0 _5 ^) o) g8 _" ^% {9 q7 c8 ~' P- K% _
3 i5 v* B7 b. |! f, S' l& w. E
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 c# R+ J# ^+ B$ x& ]: S2 L
% a8 I' f0 H# m# _6 B
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 r1 J( J0 |0 L8 ?0 z7 L2 g0 f;;
将此次交易的记录加入到customertrade-record-all
; u- r4 |' _7 {end
( V0 A& ]1 v7 o& X# u! P2 @  c7 w6 M: y
to update-local-reputation
& N5 q. I! M- k) }set [trade-record-one-len] of myself length [trade-record-one] of myself7 ^: r1 H3 e9 v) i: `
+ }: M; ^4 G+ m& V  X

% ]# _: j# c6 |# y9 H2 {  i;;if [trade-record-one-len] of myself > 3

' e6 v, F1 B# _; C" v: D5 B7 ^0 Fupdate-neighbor-total0 ~; j# D2 k. W$ T, F: A! L
;;
更新邻居节点的数目,在此进行4 V( t& ]1 L" M1 j7 R9 r
let i 3* t# [; w+ V+ v6 @5 \
let sum-time 0- \/ f7 H1 r% [8 ]9 F/ \' J
while[i < [trade-record-one-len] of myself]
4 o4 ^) n8 g+ h# ?  n[- M! L3 R5 H& F! r8 B# _+ f
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: A; S% b& u) `5 r; A0 h& nset i
  v+ \0 G- s# G9 @( i + 1)

. ?7 {; a. o1 F: V$ k; F2 |5 I]
; V: B3 g4 K4 ^; \% x& ~. Elet j 3( x# k# K# f& M$ h5 _3 K% ^: A
let sum-money 0
+ o+ G" ?5 O5 h0 `+ pwhile[j < [trade-record-one-len] of myself]
* K! w& o  s9 b/ w% V8 F* s8 |: `' a[9 ^( O% d* K0 k
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)
& p9 l: M& b7 [$ Tset j) ]: Y  @; O$ s3 |& @- u, b% l9 s4 u
( j + 1)

1 }1 b4 m3 j1 S]; J: k2 \) k/ ^' b
let k 3
  O7 f5 P& H+ T% S3 l. G, P$ ulet power 09 \+ ?: f! ]" u0 a0 Q
let local 0
# {0 u! a& x2 l1 L6 L) s# a+ R5 Y4 bwhile [k <[trade-record-one-len] of myself]
3 }9 x+ q6 f8 R% q; O. {[
" I# r6 o6 S6 j! Y9 Nset 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)
; C" [0 n+ j( s6 d5 o4 T, w# gset k (k + 1)- s) H+ L6 t) ~8 Y
]$ T; O0 C# L7 V% ?0 {
set [local-reputation] of myself (local)9 g' u  C8 F) @2 P9 ^9 [: {
end6 w9 h% N; o- i6 w5 {* A
6 B$ I9 O8 ]2 M% w1 c5 z
to update-neighbor-total  U' d, U5 J% h
3 Y- T- L- Q* g3 _- {/ ~7 Y9 o
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% |% V8 P* T- K/ \8 I7 m+ }% j0 X" |3 @- _; M
9 n: J4 S  @9 i
end
4 F9 S7 Q9 J* R- k' _% `! L0 l5 M% r& H9 E  |* t
to update-credibility-ijl
1 X2 [& K  }+ x8 n1 c
1 j8 Q9 z; ]* v0 R/ |! ^) t;;
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。6 `2 I; k' A0 N& I% B
let l 0
3 y5 J$ H0 T" W, f. @, z& p# ^while[ l < people ]" `0 F- R: L4 x1 G! b5 T8 I
;;
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
. A* V! ~6 A; O+ M7 L[
  B+ {7 l1 N2 v; Klet trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 L6 u1 I/ T+ o# \4 d+ s" U7 J/ @
if (trade-record-one-j-l-len > 3)6 T0 v) q' H# @; m8 x
[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
. V- ^3 j) R& }6 Elet i 3
8 z) y$ P! F, h5 Ylet sum-time 0" d9 L* x7 Q  B; Z1 ^+ H/ j
while[i < trade-record-one-len]
8 C# D4 e/ _, K! D[: D% c, O5 f5 r9 @% m& K% ]
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- ~2 D/ Z. k5 d2 e2 b2 M+ I% |/ hset i
1 G2 T' a/ M0 @! g( i + 1)

9 z1 g- ~/ X: U7 ^]
: f4 O& W! W  A9 dlet credibility-i-j-l 03 z, b9 s6 I: Y% T$ J1 F
;;i
评价(jjl的评价)3 y0 O. w  P2 B4 p6 G" ~0 G/ _
let j 3" f8 ^- L8 R8 }9 J7 y
let k 4) s  b# y. u* }: N& b, m; f
while[j < trade-record-one-len]
2 h; B9 _3 g# F/ }  w[" x0 u& H% g# n. r# d0 a: }
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+ i+ \  V9 R0 C4 B' ^
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)" t7 w2 K% z3 K3 a/ _. q. ?7 ~- M: i& z# F
set j
) b; N6 f. @& ^/ y4 U( A5 ~+ o( j + 1)

  C# y) N+ m3 d+ _2 m  c; i# T]5 R3 k" L2 c% o+ y
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 ))/ U: ~* q6 \# r

" M$ L, H6 k1 X) d: E) @; B2 \2 G
7 D5 {. w8 ^2 e4 x' t$ y% ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  d# t; x8 N% h1 c$ h& l;;
及时更新il的评价质量的评价+ H! ~+ {) r* y! F' O, K) E3 P
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( u* @6 P# q, F
set l (l + 1)" T* W7 d- y' _9 z+ K" [0 o
]
" M0 l9 E0 I* J; h. vend
0 Y  U' j. a9 k& M
, F0 ~# }" G6 r" w' e' fto update-credibility-list
; B' [3 Y0 v! Y8 H* ?9 N8 Ilet i 0  F9 U( F9 R- V
while[i < people]
' |  f( S- A% i# E9 r  z' W" X[! _5 m# x1 C+ ~6 y' E- g5 J
let j 0# h, G. t  [' B7 }+ ]9 _% x' t
let note 0
) `/ j! y* ^* u- ]7 p0 c0 Nlet k 0
. w8 e) j( \, r( n1 \;;
计作出过评价的邻居节点的数目& Y* _. C& j3 P) c) n5 o0 X
while[j < people]
# g  T; b  b( [" f5 }0 k[
, H: o$ A# L& f; c3 [' U3 mif (item j( [credibility] of turtle (i + 1)) != -1)
$ U+ |8 D) R6 H;;
判断是否给本turtle的评价质量做出过评价的节点
/ g% A4 `- ^. a7 ?[set note (note + item j ([credibility]of turtle (i + 1))); m5 V& m3 ~+ k7 W  L6 N
;;*(exp (-(people - 2)))/(people - 2))]

7 N5 E) g  R- z+ ?: u8 rset k (k + 1)
& h" L  x" R( H+ T) X]
: l+ w4 X$ f2 ?2 k( bset j (j + 1)5 y/ e" j; G5 a5 ^! N& B( W; G
]
: h4 m/ D7 T! J, {+ b3 L; Hset note (note *(exp (- (1 / k)))/ k)
7 k( \& \0 [, w! d5 qset credibility-list (replace-item i credibility-list note)
0 d$ d5 C; c. K3 [; J4 Z" dset i (i + 1); R) x6 i6 }& P6 g7 I: v: y! N
]
, m' t& t  r$ X0 C' q- K* S, [end
+ s" p, c& h$ D' H3 `5 u3 v$ b9 G; r1 M+ X
to update-global-reputation-list- F: H6 T3 J9 y3 l8 o5 D8 m, D
let j 0  D  y, F6 G+ v1 F+ Z; r
while[j < people], h) B5 l8 m- X- {" X
[) B- y/ u4 B: m4 {! _2 H3 c% U- \
let new 0, [, E1 y4 \+ s. j  J
;;
暂存新的一个全局声誉
& E: p# p2 Y( h( e& S& |let i 0
5 z1 W9 c) H4 }9 o, ?let sum-money 0
* F7 M  S2 X7 C. d( Alet credibility-money 0
( {) D3 x0 \, H4 H/ B- qwhile [i < people]
' K' p" R% c' A8 x. |# L' g[, R7 I- L5 k* E/ }
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" Y. d* n( z8 \/ `set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 m9 q/ P/ d* v0 ?: _set i (i + 1)
% k' q& A* h" E7 N]$ ]; `: U' h  [" x
let k 0
( K* @+ K# n# d8 v9 c1 Dlet new1 0
& G. s0 z; E/ P% s7 owhile [k < people]
7 r: y1 z# {; w* X* x: ~[
9 d' q0 P; m; d* sset 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 r: w: }, `. }set k (k + 1)
0 F) f$ R6 R$ U6 B]# A; [, Z8 ^7 w! A# F6 C: V  V
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " s" i' b1 S  O' B% Z! ^
set global-reputation-list (replace-item j global-reputation-list new)+ G/ a! |# p4 p8 ]$ y6 K
set j (j + 1): B, c& p, s. ~
]7 ^! [, U1 N! |5 U# t
end
5 ^. l8 B, G! b* W! r
: R5 d6 e; M& c& x# u
! {  `5 n% r; A0 m9 j  J1 c+ E* |/ w6 s0 z" j4 C; D
to get-color' P5 s+ n, n1 h; a, h' R+ }
! _3 u4 A' o$ B' t  z  D
set color blue

4 v' P# s0 e' k7 b9 p/ _end' K1 {$ H+ \2 R
8 }5 o; O( F: |+ ^
to poll-class
! F: T# @1 I( i4 n9 U' ~end- v$ w* X; W$ o  o0 F( Y+ B
' s, i1 M7 G* J0 B1 k$ A6 y4 A' ~
to setup-plot1! f8 p; ]& k5 Y

6 p7 s, K6 U( l- l6 eset-current-plot "Trends-of-Local-reputation"

+ G  ^1 _0 C5 n7 V2 B9 ^/ e! ^; r- I- Q" ~+ b
set-plot-x-range 0 xmax

; u0 _& N' @: C5 R8 P& l0 K( F6 w* G# b5 i& ?$ x
set-plot-y-range 0.0 ymax
' L: [  E7 O: W8 D5 b
end1 T7 _. T* x- F
3 }/ `/ e: k5 l% J4 C+ T
to setup-plot27 B. X0 W+ C8 H" L

; |6 A4 z' Q- T/ Y0 Eset-current-plot "Trends-of-global-reputation"
- r5 [3 m5 b) f; o; W2 q) i* U

; F" M* U$ t9 oset-plot-x-range 0 xmax

5 u" K2 [, v0 j, L1 {( p- H% i% o- Y
set-plot-y-range 0.0 ymax
3 |# L/ b1 e1 f) @: p# u; ?1 `
end; a- r8 l5 F1 ?1 @3 G

; ?3 O# _, M5 @) ito setup-plot3
9 ?- l! E  V* x# b
* @' `7 c/ p; P! L, j7 k, M, |( l+ X6 Dset-current-plot "Trends-of-credibility"

0 a$ @. I+ ^& X4 T. ~) i1 b0 y$ ^% \% ]  g. K4 n; b3 R
set-plot-x-range 0 xmax
" q6 P4 i  X7 n
' m' d$ M  _5 @6 J4 r
set-plot-y-range 0.0 ymax
8 B+ e+ p: ~3 z/ w; m4 n6 [6 m+ e6 ]  V
end
( p$ N8 k9 U5 t6 X' A" @# c, P7 j  J8 g/ o" ]& w# U- P
to do-plots
+ F) q' H5 Q9 ~& L0 ^set-current-plot "Trends-of-Local-reputation"4 c; N# J+ y4 x; L1 C+ }1 `
set-current-plot-pen "Honest service"
1 U5 _0 l  O1 z( w. w$ E! ?) R  @end8 j1 H# h0 s4 F0 @5 _9 g# h9 o

/ K9 t) q- F9 x, D9 f2 ~: e[ 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.
5 a9 g7 K  n" m% o
# `7 T4 ]' A1 S% a1 u) M: {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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