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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:/ G& P% Y5 A) W$ g# B' I
to do-business
- `$ I7 p7 i) F rt random 360
/ `* b  h7 ]6 T9 z; L fd 1" x8 U  N( y& k" ]7 ^
ifelse(other turtles-here != nobody)[8 M% a- N8 v8 ?& F: Y! K# i
   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.
. @( a* w9 F* A* S  a" |   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , D7 g# D5 L. ~: M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- M6 d9 [& v2 j& J( [) B   set [trade-record-one-len] of self length [trade-record-one] of self
  Q& g1 V- \2 e& R: N  C& N1 Y. R9 `   set trade-record-current( list (timer) (random money-upper-limit))% O- b* W5 O: g* n6 ?/ F
# ]3 M2 }' z+ g- n, J0 v0 e. p
问题的提示如下:
4 p; q3 X, D; O" h
- A4 H: \9 i' S* G7 A; merror while turtle 50 running OF in procedure DO-BUSINESS" l% h. H  \: O3 c) w
  called by procedure GO
$ _4 x4 t9 ~2 VOF expected input to be a turtle agentset or turtle but got NOBODY instead.
! v- s- ?" X5 e
(halted running of go)" K; b5 Z+ T" C* `4 L; l$ p
) J% T% b- k3 J0 w% C. y" 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~~
5 X8 Y+ l5 k; l! a& r6 H& ^! j! b' i3 [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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参与人数 1仿真币 +30 +2 收起 理由
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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
4 d* \  R- P4 m+ T0 t+ u4 eglobals[
+ _* {- \0 p0 Dxmax
) m0 ^" h! v2 }ymax" S/ ^  U: {. I/ f' j
global-reputation-list' w# y% C  w6 j2 @$ ~# R, x
9 Y6 [; ?0 u" W4 n1 M1 p/ `  {
;;
每一个turtle的全局声誉都存在此LIST4 ?2 J# H5 I8 ]2 u4 L1 X8 t
credibility-list
7 s; Q2 o0 n9 y;;
每一个turtle的评价可信度& @& P6 D& N4 C* q5 U
honest-service  X+ w5 a- `. a$ A: O
unhonest-service5 S! s- @6 k9 f& c7 X
oscillation4 t) y& y+ P8 ^6 T
rand-dynamic
) |' ~" \& W- h* ~, M4 N]
7 }# h, h+ r& {0 G( p' J$ S* P1 }9 f% T; o) @7 T. S' ~/ o$ x# n
turtles-own[
2 Y( X$ {% |- m2 qtrade-record-all
# n0 L6 q* P3 r1 T& O;;a list of lists,
trade-record-one组成
9 E% r3 |' M. ?3 k3 n7 Y. |trade-record-one+ l. f4 {; }& `" x4 b8 l
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ l3 b/ S. V- @% r: y
4 \& a! a6 v( b- Q- v1 y$ I5 X;;[
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 X  d: N- H, ?5 ~
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]
( _5 |* K9 B  o2 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' s8 i; N+ u$ }
neighbor-total
  K$ U0 L1 d8 q4 z# `) w& |;;
记录该turtle的邻居节点的数目
) ?" [8 Y" @1 itrade-time
( z1 W- N4 f" G4 T( v3 o;;
当前发生交易的turtle的交易时间
$ W* M. b, I6 o* N; O9 S- o4 eappraise-give
! _7 {+ f7 C0 W+ _1 M* S;;
当前发生交易时给出的评价
( d6 u7 L, c& j- ~5 Wappraise-receive
( n" }0 G# ^' k;;
当前发生交易时收到的评价
+ n: _' P. G  M8 jappraise-time. C9 |4 W8 O$ C" r6 r+ T/ d
;;
当前发生交易时的评价时间
5 ]$ O( o; E& Z2 {# ?& W/ olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
& s  ~) o5 z5 J0 M0 R. h$ dtrade-times-total
1 A$ N$ m- Y8 y, r& u# ]8 i;;
与当前turtle的交易总次数
/ i' Q# r# Y# n) |( \( s  ~" ytrade-money-total
6 i( D7 ^, z2 b5 L;;
与当前turtle的交易总金额
% }" j! u9 Z- ~4 B# y; ?local-reputation9 ]& e( B  L6 L7 U$ j% u
global-reputation
- a) I5 y' i, O8 bcredibility% ?! H* d% T& h& W2 [
;;
评价可信度,每次交易后都需要更新5 a9 |, ~( @' P
credibility-all) ^  B7 s* e! `. a' z
;;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
1 p' y$ w$ V9 L! N, A
; J8 i+ l" R$ c;;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
( l$ A" n; V$ X6 c9 Lcredibility-one$ D2 X% f4 K, f% b" ^! A# }4 c
;;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
' }! ?& f. h! v0 Sglobal-proportion
$ D/ L/ o+ d. d4 ^; Z8 pcustomer
% x- q4 l3 X' L! Y  i. [3 Wcustomer-no
, ?$ N  X/ O2 d; V+ Ctrust-ok3 T; k( j; I! `1 H
trade-record-one-len;;trade-record-one的长度; G& R. c- F( W
]. L* B$ r/ [4 q, f* z# z

+ o. O; O+ |% L% j  l7 V0 [1 w;;setup procedure
( w/ C7 N7 I6 \3 E  h* _$ L0 b  i/ H5 V$ p. {: I/ B
to setup/ ]; v% g2 n# u% q

+ T2 g* L) c7 y: V3 `7 \- cca

# W: l7 W- n! ]" d0 v2 \" M; c6 F
1 l7 I9 H4 _3 C7 Yinitialize-settings
. x( W3 N! T$ a0 q$ J
& H, x8 b2 Q$ q- P% ~
crt people [setup-turtles]
+ e% c; H  S+ h
5 H; j6 u, k' t7 \- G6 v$ j
reset-timer
5 U+ r/ N; n' H4 Y6 Y5 f9 ^
( M* q' X, `  m" H/ H( M: p! h
poll-class
  K* e1 [& L' b7 j

  n5 u6 g: n  o/ @setup-plots
3 r5 ~  G: K* g( s7 O
( T, K# I+ H7 b2 ^3 t6 d. e, d
do-plots

, z2 B4 F8 o3 x% j# ?end) m7 h7 c+ h+ A; V- Y4 ?# ~* p
! l  a( ~- @3 T# l
to initialize-settings& s  k, `4 R% D$ |4 k9 v
( w8 p8 F& N. l2 Z* R  I$ k
set global-reputation-list []

  `; B3 }0 N1 e" c1 _* w6 ]- g
3 f5 {, P+ O: F! \* u# ]$ ?set credibility-list n-values people [0.5]

/ _$ r+ z: q& b' N9 Q
: X" h7 @3 k7 n; b1 mset honest-service 0
9 ]' O; F" V# n+ c; v5 N

0 ]6 m" w" @/ w, h, D8 ~, ]" Kset unhonest-service 0

4 r/ X* |* P: g1 p6 \; D+ s& U1 _/ j7 K( a
set oscillation 0

4 ]' I2 z- e. K) Q0 X  p% j/ F. j2 Y% i5 u/ K- a
set rand-dynamic 0

' K# S0 w  z; ]# @$ D# Y( kend
+ b: Q% L7 Z/ I: s' n) _
6 w% x; }: h; j+ H' [  J1 Ito setup-turtles
$ K- s! n3 u) I6 {/ kset shape "person"
( @7 R# Q1 u& p4 g" F# csetxy random-xcor random-ycor
! y& b: L" c. ]' R8 L0 V9 {set trade-record-one []
+ ~6 q5 g4 d5 B( ^* Q7 A2 c; O

4 o! d, p0 k  R' l6 M0 Hset trade-record-all n-values people [(list (? + 1) 0 0)]
. g* _9 Q. ^: e

  ?# {% I7 x. D, ^  g  Iset trade-record-current []# q7 b, X. x$ r: L" y
set credibility-receive []
( V# A5 I3 @; B! M& h8 o0 Q, Bset local-reputation 0.5
1 h* a4 C+ h, l; ?+ gset neighbor-total 0& g! g: U, V. K# W, K1 ]  X
set trade-times-total 01 \. `; q: g' t: H7 E" [( p# i
set trade-money-total 0
0 ?  Y( T. p4 k; ]. vset customer nobody$ n% \2 ]& B  r8 o6 D- d; \
set credibility-all n-values people [creat-credibility], D7 Y. C  \4 c
set credibility n-values people [-1]
% p5 @% U5 v1 D4 v  yget-color# u5 c+ I0 a7 c  ]$ i
  U$ F! I/ \* f; d( C) D- ?
end6 M% j, J7 A# C( o. M4 K; J0 x" A; X) h
; \5 G  S. p# J, C/ l' E
to-report creat-credibility
5 x  F: w7 a6 l2 _; x) J) |report n-values people [0.5]
% }' _  B+ o7 }  ^end3 ~, k. q8 I3 z; n, k7 f$ b( F

6 P  K6 `. q( o+ X5 _9 K1 w$ hto setup-plots# ?7 l$ O2 O4 I  [( l- M( f4 g
" ]' e9 x4 }  r3 i" |
set xmax 30

: g- n$ M9 J" a6 v/ P+ S. @0 w: v7 F/ k
set ymax 1.0

( ^& i( j! k" K9 }7 g! B4 R: I* ?! W3 D; F( K# G( o
clear-all-plots
4 o  Q( A& A6 A$ g7 b! ^' ?- t
% y& ~. M3 o4 ]% y/ a" s
setup-plot1

+ F* }8 J6 ?% L5 c! p0 y
2 S1 J: Z2 _# M5 V+ b; ~" E* ^/ ssetup-plot2
! ^2 q! z, b# |0 n' B2 \3 ]$ U  M
% i0 S1 K0 I& r9 u6 |8 R2 y
setup-plot3
6 U* _- c6 n' I( ?+ C: S8 \
end8 C# t1 Y* @( {- r2 ^$ l

: C2 s3 {3 P/ ?" X' ^;;run time procedures9 {4 o8 L" A: l) Y! q4 d
- P6 ~$ E+ h' S: e# \
to go# I. D. T5 y+ X, F* o/ ?9 e4 R$ a

$ [. F, |7 H( C' }4 n% Task turtles [do-business]
2 F# I; K' p1 f% ~6 n/ S/ p" Q
end
( h) j+ s7 X- ^0 M2 }/ i7 r" U, d6 c, }3 N: M# r5 a, I. E  ?
to do-business
  o- `0 y6 F% N' c
; D3 U' p3 S0 H$ H$ F3 [$ q; S
) {! K- k8 H+ n4 j) k7 f7 _# o" f+ {
rt random 360
6 z, D7 I$ c, z' f$ l4 y

: Q+ c) j, U/ O: M& mfd 1

1 z: w# D0 B! U: }* [2 X5 K! ?8 S: ?5 E9 O# F
ifelse(other turtles-here != nobody)[

! W1 R: [( q: k$ v
( c, G: K- M; f% h8 S8 Jset customer one-of other turtles-here

& e& f$ N4 d* K- `/ n% _$ u
# n4 d, m- R2 i;; set [customer] of customer myself

8 v1 ~) g. [8 E6 H* C! L, {6 f  @+ x7 T" K6 t
set [trade-record-one] of self item (([who] of customer) - 1)) F& ~" e* w% l7 d- J6 m
[trade-record-all]of self# |3 c8 N4 e; R0 g* f
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 H) v2 x! K# P" F- O% g9 r- c$ _" A. S
set [trade-record-one] of customer item (([who] of self) - 1)
8 R" y' I/ I' S. T[trade-record-all]of customer

$ y  l5 g* t  |9 B- ^. j# a) m" V4 ^& P/ f5 J" ?
set [trade-record-one-len] of self length [trade-record-one] of self

6 y- `+ @( B5 Z3 G: V. J* L4 @0 H9 D0 `  H7 t
set trade-record-current( list (timer) (random money-upper-limit))
: q* w; [9 C/ Y0 W3 b. K* u
- l/ f( C& u2 e+ [/ X4 R; |
ask self [do-trust]
( g0 q! ~' x2 H  U: Q: Y;;
先求ij的信任度( O. [2 C: i. I% @

8 t  \5 C7 i8 m* v% a5 ^2 `* Uif ([trust-ok] of self)
8 r' P+ d5 X6 H6 w* ~) u;;
根据ij的信任度来决定是否与j进行交易[" F  J! B. {! v2 d9 R
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  R: x, H- j) U4 X7 n, s9 U# j* g: q
[
$ y/ V, i3 h; P' C3 x

7 L. q6 V$ w4 j0 t1 b/ pdo-trade
4 ^1 T' p: Q- J* O' I/ c* \

; ?+ E- U5 @( S& E3 [update-credibility-ijl

# s& U) ?4 ~8 m& O! t) Y# U, P0 x8 a
update-credibility-list
' T) E8 Q' L4 r  Z+ V6 Y6 h

7 F; h. `6 |4 E$ m
  {! ~  j1 `: o: v3 L( Rupdate-global-reputation-list
" W9 c7 @( H" `" @8 n) ~. q
6 A+ z0 r; ]4 d$ z3 Y% x
poll-class

: Z# |( W/ M+ K1 l
% Z" V1 _) `" w/ l& E& ~get-color
- M$ J2 k# G* P) ]5 X9 Z5 g
: g* E: W7 k/ ]) t  z. q/ s! Z
]]
  p$ ^8 ~( G3 A# y1 p9 k8 Z7 O, y/ w7 T3 w* L4 ^
;;
如果所得的信任度满足条件,则进行交易
. P* A3 h* R% A
. z/ K! F; ^# G( q3 S[
3 Y+ r: v( V: c5 d0 n9 _/ h% U
( |. Z9 @# w$ L
rt random 360

" s1 o: f5 F  ]$ d
  x, C. ?0 W% U: ]! l# Zfd 1

% D) h4 j0 C1 I: V4 e4 |6 V: V5 h
$ J/ ^' |( o4 P! M, d* ?7 Z* H]
  F" k$ q5 ?6 G1 F6 Y. L' O

* X+ T% R0 g! v" R+ Lend

' k! w! g: J3 y6 M- U# X& s5 K& B* y  ?9 s& m0 ?6 m" {
to do-trust
* W: D% L. F0 C! q2 N8 \5 Tset trust-ok False, s& r8 x6 W& v6 I
- e8 `: c0 f" D: n  l- T
9 ^9 L; p. A& ?! j& m$ ?" E
let max-trade-times 07 n8 J0 S6 k) M, |3 I0 }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) b) z6 M$ w3 m' C+ `2 M  c1 J
let max-trade-money 0
' K% j, G; B7 c' K; Qforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 g, S! m; Z( p0 g% slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 A( M6 i- a$ T% ?- U: M4 ^! u+ R

% s6 ?" y6 e( d; ^

9 _( X: K; ~& D7 u# Q/ Dget-global-proportion
2 N$ S; t) ?- U/ x, f/ n6 S/ x0 Glet trust-value
2 j! {4 }: i- l" |) `3 e: 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)

+ R9 w7 @' X# U0 C/ y0 |# H( T1 xif(trust-value > trade-trust-value), ~7 v8 T2 w6 y( V- }! L' G* E: x
[set trust-ok true]
+ s6 i* u) K% X/ B2 g- u& n1 b8 kend
6 D0 E6 |) k$ M, M4 C' c' v0 u4 P3 Y/ i' _  O6 {1 K  M% C" p, p
to get-global-proportion
$ p9 X5 o! X- h' a/ S6 Oifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- J/ X2 [% ^# G4 ?8 X# x+ o
[set global-proportion 0]
5 ?2 w7 z5 D/ _, r0 X8 `9 Q& b[let i 0$ I5 C" g0 \. y" i3 h
let sum-money 0! E3 X8 N2 y6 a  @# y
while[ i < people]
2 Z) A' F( c/ F) e( I! p8 k[% V3 u7 P' y" Z% Q3 ^9 z( Y6 i. ?& i
if( length (item i
. ^( b( a& f: h- G6 T, x4 c7 C[trade-record-all] of customer) > 3 )

- H+ I: }% G2 A4 M! i5 f, u[' F5 \, l/ E* N# y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 k& G" H. |7 H8 f
]1 }" _" Q. G' |2 E
]
/ h4 [1 o& ?% W. {3 ^9 {let j 00 _1 A  J& y, D# n
let note 07 L; b4 s) Y+ R) y7 |4 }9 A
while[ j < people]# {& N, j0 p6 M1 @9 H
[* }; W/ {& x4 u! V
if( length (item i
6 q( i0 ?  l# ~! D4 L[trade-record-all] of customer) > 3 )
3 [0 K: r+ M; I8 G0 f  x
[
. e3 A+ _+ P# X7 Fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' I9 p4 j# N) s, K# Y% Q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 b3 X1 ^: Z' _; x# _+ R; o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' A2 b. s/ P/ I* v1 _5 D
]5 J5 }# @6 B2 S# X" s0 J
]8 ?" B! Y8 C7 C9 R$ f
set global-proportion note
' o0 c; ]% n4 W( g$ D& U]3 c" [; g' l9 ]1 l1 M6 l: _
end# l1 @" U5 h' K' n- F) W0 m
3 ^% _4 C; g9 M1 D: A
to do-trade0 e+ i6 u" y9 z
;;
这个过程实际上是给双方作出评价的过程) P% ]( ~5 W$ E5 p7 P$ l. Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# s" P3 ], q0 C! b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" H) P0 s" f& v# i3 J5 K! J
set trade-record-current lput(timer) trade-record-current
1 n5 H: @" X/ }1 h3 _;;
评价时间
+ y4 w4 R5 {! P0 h9 m" |+ E+ u; Jask myself [, y4 n' P$ {% l
update-local-reputation; Q( A; ]9 Y+ j( }. t8 K( F; v0 O( N
set trade-record-current lput([local-reputation] of myself) trade-record-current
4 T7 g" w; T" u% l]
& |3 z* d6 r# s+ dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# B3 |6 m1 z2 b9 {' ^;;
将此次交易的记录加入到trade-record-one1 x) f3 u/ U8 o* L: N4 J8 P7 x
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 K6 C. _3 ]' `5 Dlet note (item 2 trade-record-current )/ m+ \$ G8 v% o  i! h+ I. G, e
set trade-record-current* q8 f' |" }. }- U+ Z2 ]7 h& K
(replace-item 2 trade-record-current (item 3 trade-record-current))

" U3 b1 f  k  X! r+ x3 N! oset trade-record-current
3 M& S( U3 b& M(replace-item 3 trade-record-current note)+ H3 U1 f, x( A
' T  Y9 G9 ?- G# q* z

7 [% K1 i2 o# task customer [( q( r0 ?7 i6 ^& g" C
update-local-reputation
: v7 z# ]( ?' Q2 ^: l3 y+ p/ Pset trade-record-current% x3 `- L& n/ I
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 `1 R! v0 W! h( A* x]/ q0 V( m% I( h

/ m  r& T! Q) e$ M1 Z9 P+ w

. l' p6 ]& K" I2 [' I5 rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ C) k6 ~. `; R' h. I- g5 U

3 h6 f% N5 g# u4 G$ t+ W, |set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! k% b/ c) g) M8 n8 s: w
;;
将此次交易的记录加入到customertrade-record-all
* n& i- x9 o4 p6 X; I, S9 g8 Oend% N( O% c; u) k
2 S  N% x4 f' Z4 Y5 p' T4 T* i
to update-local-reputation
  j: y2 P# N& l4 |set [trade-record-one-len] of myself length [trade-record-one] of myself
, n6 Z+ o' e5 m8 Y/ |$ l/ _/ Z4 l" s3 z" y
: o: h* _6 v5 e- @
;;if [trade-record-one-len] of myself > 3
9 C. ]5 w& @1 S6 B; v0 W- f6 E
update-neighbor-total- }* F- A' i  F2 _3 U5 x
;;
更新邻居节点的数目,在此进行
% j( A$ x& q  y, o  U! X. a" [let i 39 D2 g" G; q# s1 k0 o
let sum-time 0
2 q9 U; C9 O. E; {" W- z/ lwhile[i < [trade-record-one-len] of myself]8 g# J/ t- R* E. L. y& I
[
6 G" i. x: m/ t' N  S1 n, _set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 X; F) I$ {) D3 K0 T. t' }set i
; r7 i+ L/ _9 U, ~) q( i + 1)

1 O  ?( y$ I% E4 O]
, l% y- `& \& s. i- Llet j 3
' `" S# Y% t# w# i6 b- E% ilet sum-money 0  a  H2 a/ m5 O# b4 @* @
while[j < [trade-record-one-len] of myself]
$ p$ n/ x7 W/ u5 S: P, k[  b' Z- g" s- ?/ ?2 y8 g$ L
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)/ p: X+ h5 S# x5 y3 o; s
set j
1 x, J3 Z7 O. q6 Q" O+ K$ [( j + 1)
; f( A8 Q( l$ v
]
2 K6 b! F- s1 A* ]let k 3
/ W) `( D! o  r" xlet power 0
8 R# }3 V7 F( w+ ]! H# @let local 0
0 ~( ^- X" N; @0 ]2 Zwhile [k <[trade-record-one-len] of myself]
6 W2 z2 |# C$ _" }( J6 o[
1 A1 H( M7 r* f+ pset 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) ; V9 ]- q8 S; i" g( L/ m' c
set k (k + 1)6 w& S& E( l) T7 z! P
]
- \* A, A  I9 y( b0 ~set [local-reputation] of myself (local)* u' c9 ^; r) D9 `& E
end
8 L  Z. V* @- ^3 z' s' B* x/ _
/ P7 ?6 p! h2 e9 [8 nto update-neighbor-total
9 n2 A* z( K, R" ]" n
0 S+ S5 v6 z. Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ b# b& w  k1 U

7 a) B1 y$ F7 I- X" m7 j

, q; Y& D: ]1 I' _end" w) J$ f/ c2 p1 O. \7 g
* v* K% Q9 C: l6 T
to update-credibility-ijl 3 @) s- D1 g. a0 W
+ I5 z. r* j+ U7 u
;;
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。9 l+ t* q  G& W4 l' h% r
let l 0
1 I; h$ m+ b. e7 a. m/ O; X4 Y# j6 M$ `while[ l < people ]
- T0 l- a& c$ r8 R1 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# [& r  \: x0 s4 T  u7 C
[- q) Y1 G( ^& X% M5 q* l
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ q( P" u% O1 i! S) A* y0 yif (trade-record-one-j-l-len > 3)6 e' _! F$ J) E7 p  l
[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
0 G8 k3 J" d+ i4 w/ `) u# l! |  zlet i 3
8 P* v! d$ [2 m7 b7 ?let sum-time 0! Z% ~5 i/ I* F
while[i < trade-record-one-len]
; ?; o; L% i( d6 U3 ~8 Y+ [[
4 B" c8 B# C- c9 sset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 w8 h  V  \/ @4 {$ O) ~
set i
* Z% N+ c5 Z1 n% ]. ^  H5 {( i + 1)

4 G& H5 D, C  M* B" X7 y4 Y]  ~( L( u; W8 e5 s6 N
let credibility-i-j-l 0
# r' B5 \7 K% t6 a;;i
评价(jjl的评价)  F9 o1 ^+ W: C! L/ o3 P
let j 3" @# p8 @8 X4 x$ m0 S
let k 4
5 b) Y: O8 w' f4 ^  x! e8 P0 Twhile[j < trade-record-one-len]
+ D) y- Q! Z  c: r* `: D- {[
! Z+ i& x# x( ^: n& Qwhile [((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. g* n. |! S: v2 k0 W( h7 T
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)
6 r: c9 z, w4 a/ E' Y5 Z- V/ Nset j0 v- ], N6 W( h: x4 k
( j + 1)

% ]$ a+ [8 r, @  M0 y" P% M]0 K! x* ?1 `0 s
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 ))/ P1 O2 f+ s9 z1 a" Y
/ M. i# }! A3 k
4 p' d/ n2 w% L* e7 x
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  q2 n! j1 A  [8 N2 v( \
;;
及时更新il的评价质量的评价
8 R& }( J; O9 A- {6 q/ e7 Vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! q$ s8 r6 }& h4 V9 Jset l (l + 1)% p/ v2 {+ R; |
]  v: ~# }5 _, }( W
end! ^* p  ~7 {1 H2 p

% J3 a. ~7 J; d" K$ Z. f1 h1 H* t  b$ Lto update-credibility-list2 Q# k- Y, O0 B9 }; K" f0 o, u
let i 0
1 g6 a* y7 X* t- T4 E8 iwhile[i < people]
1 f; [; S2 p; Z[( W& `+ x" K8 O" Z) v! e$ w0 W) v
let j 09 ~$ _4 {9 l- p
let note 0
- X6 e! {$ x2 Q# J* ilet k 0
& C9 ~+ T# o. n0 z/ A;;
计作出过评价的邻居节点的数目
" Q% o  V4 a1 S6 Ywhile[j < people]) m* m. S9 S! X! H% O: S
[
1 v8 v8 c. P/ P- T# i" f$ i/ Zif (item j( [credibility] of turtle (i + 1)) != -1)0 Q1 k  _9 Q5 `# A* [1 g; v8 j
;;
判断是否给本turtle的评价质量做出过评价的节点
; K, i, f/ v, I: Y[set note (note + item j ([credibility]of turtle (i + 1))), i8 u, ^5 R) O! _" p. l
;;*(exp (-(people - 2)))/(people - 2))]
9 s8 _2 o( y% u
set k (k + 1)( ?4 ]8 y) K: f. o# }7 V
]7 n8 }( ~# W2 M2 N0 J5 D
set j (j + 1)
; D: T% Q. j6 V4 R8 J0 I4 t, ~]7 m) z5 J  \2 P$ Y6 w6 n: D
set note (note *(exp (- (1 / k)))/ k)9 H/ j2 v% w! B0 G+ m
set credibility-list (replace-item i credibility-list note): t& i, b7 M: S3 U8 ^$ ]! |
set i (i + 1)+ {9 d& o$ w. z  Q% V' o
]+ V# R. i# J! |4 H5 m/ b+ k6 w
end
5 `; s% V; G( _5 P
' t; T8 Z7 O9 j$ h& Ato update-global-reputation-list
0 k. U- T: Z; J5 Glet j 0
) J1 C7 M! f0 J  E3 k+ I, P) ?while[j < people]
1 |- }1 u8 H8 [% g" V[! B% O7 W2 o1 M' P/ \- s5 ?- J
let new 0
9 V1 }4 r8 f5 e0 F/ S4 a;;
暂存新的一个全局声誉& Q" e2 G, V: S" R( E
let i 0
) |$ X9 v3 i! l( Q3 Tlet sum-money 0# K3 c* j; a0 |3 ?$ s/ k8 Q$ o
let credibility-money 0
' D; O$ }; L/ g& Q( ?+ J& _5 \while [i < people]. Z+ t& @  ?! a. H( i1 T' u3 Q
[
2 e4 a! z2 _* [# ?. Fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( d1 `& k5 ~& c& R3 w: W, qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 s. o% A5 w4 P- s# ~) j* Z
set i (i + 1)
3 V1 C! f' L+ l5 p/ r  q]
9 f6 Y! M, q+ _, n3 i1 Ylet k 0
& S  S+ J% [7 b( `. [+ e: H: X* N  h+ wlet new1 0
2 U+ C  v" O  Q3 bwhile [k < people]
, K! E7 B* U) j[
0 c1 E/ C; G" @8 t( eset 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)
% T. C# S/ ]# Y4 H1 _4 V5 I+ Eset k (k + 1). i; ^% V) O* L  B7 e6 `
]' Z& I% z$ v% C) E: X1 f& b0 u
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  g- Q1 Y4 C: B* Wset global-reputation-list (replace-item j global-reputation-list new); @  |4 k! p$ ^6 y
set j (j + 1)4 Q! W' |: z$ g3 {$ ?
]& ]' u3 c: W: {; A: l
end6 s& d1 C, Z% X0 L* m* y% S
  E9 q; _* }* M- n0 n5 n

# i' e, o4 C* f6 o6 U6 L
* n5 D' }* Y- T. @& q9 F; Zto get-color& x0 \6 Q+ O" t- F2 v
2 O) ]- h/ @5 `" \! I
set color blue
$ z. C6 {  a% n' V
end# H) U: n# p. K$ }* c

) O: n3 b. t& b. d, h3 xto poll-class
$ x+ S2 B) T" q; vend1 o$ l" D; R" v3 j
  F0 }+ A  c* W  {& k0 }
to setup-plot18 Z6 k* X% R  _3 n# L

+ t, i8 p$ P2 M- s. |! {% bset-current-plot "Trends-of-Local-reputation"
1 S4 G) e; R% F9 D3 X, H

4 O5 B0 O4 Q8 P: O# _set-plot-x-range 0 xmax
+ s2 C" s, x6 n: g" h

3 O  e% c; E) k: Aset-plot-y-range 0.0 ymax

" C4 g9 @- M7 e* {  x: `end
4 M% ^0 [# T3 W% X/ a8 r/ u$ [" h0 b5 [" G8 s7 g
to setup-plot2  ]! t, X1 o9 [2 a1 I7 g6 D3 x
- y4 w2 x8 r, M7 H9 h  t: Y
set-current-plot "Trends-of-global-reputation"
3 Y- r- k1 \8 z, h0 `

* Z# e3 {2 q( }set-plot-x-range 0 xmax

8 b' o0 H: R( g( z
  x0 t$ I/ a$ [2 d& @& yset-plot-y-range 0.0 ymax

) k* ~( o: W0 `7 Vend
3 F0 m0 Q1 g3 ^: B) n
) n2 z3 x5 }; t8 Z9 w2 y5 o. Bto setup-plot3
$ c7 P8 D; [: F9 k! W9 [( b- x" }) V. q; a- M0 \: V, I
set-current-plot "Trends-of-credibility"
3 `* V/ m1 F6 @( }2 H

# F" V1 x1 B9 K6 _5 _( e* V- N) Tset-plot-x-range 0 xmax

' M% U0 Q3 a) O+ x3 t4 K- ]2 n  |) }# _/ Y3 O) @5 X
set-plot-y-range 0.0 ymax
2 O$ ]4 a; B% w& I0 j
end0 B& i% p3 t5 k! C$ T2 I8 e

) j. }7 f- |  R# l8 A. Y6 Fto do-plots# a6 z5 e8 G+ B" F2 n( E/ d" G
set-current-plot "Trends-of-Local-reputation"/ h) ~( `! |, r+ r
set-current-plot-pen "Honest service"2 H+ U4 `6 X; R' b( b4 y- ^) p" u
end
$ I, W5 N3 _1 f6 i
7 P& ^( Z* o7 \7 u4 L[ 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.
1 j# u1 J- S# \( \( W9 `
4 I* Q! X6 c& P/ f- X  c' W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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