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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:
9 c. l7 k, O% \7 [to do-business % S/ q# H7 h0 l% S- S3 u
rt random 360% g( r. b+ X$ H% B
fd 1  v; P! z+ }6 k' {& s) ]+ R3 @, l
ifelse(other turtles-here != nobody)[! {5 X) L6 j6 @/ Z; Y1 a1 `
   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.& O% x8 m1 V& h) n! @; S' Q2 V
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& Q( u3 w  O3 _, O$ h; f   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, u" z+ T0 L" a1 C. {
   set [trade-record-one-len] of self length [trade-record-one] of self5 F0 N# H: R9 K5 d( b- z& P
   set trade-record-current( list (timer) (random money-upper-limit)). ~/ P$ E5 a+ [6 [! H
2 O' @4 \" Q' s1 x
问题的提示如下:
+ c; |; N) F7 J; r$ F, R% h0 U1 ^# K1 e' F) Y: R) t
error while turtle 50 running OF in procedure DO-BUSINESS1 D* |* U5 M$ H2 Q8 {0 q
  called by procedure GO& B) q* g" ]6 E' e0 M
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, _1 q5 q! f1 e9 l! n4 F
(halted running of go)
, [! `! y+ \8 {9 c' g: X$ D* l/ R$ P9 ]' a$ o
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~~
4 U0 i, Z# X2 d% I* v5 z8 K8 t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$ J6 ?, l3 j/ `. J
globals[9 Z" C  e6 s: x/ _1 x2 ]- E
xmax
# A+ I: G  _( e: _  ~" |ymax
4 p0 Q' Y) @" A  v1 L- U, Aglobal-reputation-list- L) H1 P% g7 |1 Q

+ @. g  P! @+ R( ]( o6 j) S8 j7 t3 o;;
每一个turtle的全局声誉都存在此LIST
. A' `( S# l2 Z8 P2 V. H0 `3 m# ccredibility-list0 c3 P. d  l- b3 s
;;
每一个turtle的评价可信度
7 ^5 f  C# ~" w/ N) S2 Nhonest-service- [3 b# H; i+ o, U$ q+ w+ [; ]
unhonest-service3 g) J- o- a& _# H8 t! {  \
oscillation* C! I* M# x7 H* y/ v
rand-dynamic% T2 q* N+ @4 p' z* Z
]
8 j3 X# w& ?( r
0 w- {7 C, P4 N- Kturtles-own[
0 w+ p- j, c1 B5 |/ r- o3 d  l1 ^; Qtrade-record-all
3 G8 u5 X  C+ L& |/ @- Z* L6 b; t;;a list of lists,
trade-record-one组成
$ I6 i8 t) L* W: `$ btrade-record-one) z: Y& m% G# K7 f7 ~; |
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; G9 l  [) M" u* B% ]! b) L
0 c1 n1 o, P# q! F0 Q& l1 K;;[
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]]
6 G  P: E0 h3 M% U# `  K7 r7 e4 G7 d7 Ytrade-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]% J' e* F* ^+ L/ G+ J% Q; L- c
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list0 e) [; w5 q0 u7 M. s- q+ [
neighbor-total3 K! F: h5 T  k, u) ]9 O" g
;;
记录该turtle的邻居节点的数目  J% o: x& O; \- s# E
trade-time6 N' Q7 m& d; E3 E( V% T" U
;;
当前发生交易的turtle的交易时间
! i' O0 Z$ {5 h* D: Eappraise-give7 ?1 t8 z7 F% W1 s$ i6 e& |2 g0 `
;;
当前发生交易时给出的评价. V7 S! O! P+ v& ~5 y8 m0 M
appraise-receive+ {* V* q5 V6 y
;;
当前发生交易时收到的评价
: T/ C; z' P/ a: F* {- B/ V/ W1 Tappraise-time: u3 g6 C3 o$ t( J$ ~) R3 n; \
;;
当前发生交易时的评价时间
5 z9 C9 T1 p. z. j; c# @local-reputation-now;;此次交易后相对于对方turtle的局部声誉8 I8 c4 V1 V( E/ l5 |
trade-times-total6 j+ ]' d1 F! ^
;;
与当前turtle的交易总次数0 _7 Y0 \$ j/ n" R5 f1 L
trade-money-total
- h/ \% H, N3 V  u: e8 |( @;;
与当前turtle的交易总金额
1 F3 M0 X/ {5 N- q; Elocal-reputation
4 Z7 x) n% C; Q+ k1 `* Eglobal-reputation9 N, O: q9 G- P& V
credibility5 k! a) R( L! g: x; l  f2 V) [  {
;;
评价可信度,每次交易后都需要更新' b/ I1 J6 t9 S7 W
credibility-all
- ~- }$ ?. d/ Z+ a6 \% p! n5 B;;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
, I! J- `" q6 Q4 y* l
1 L8 x; ]+ K; H$ Z" F2 H- `$ S;;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
9 C2 @" b# g" Q- dcredibility-one
  v8 L4 {6 N3 d$ x# d7 p' f+ s;;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
: P& f! Z( D. H8 P9 w5 Fglobal-proportion+ V" c+ A3 S& Z. v. m2 i8 F/ I9 G
customer3 t) G; O1 t7 w2 Q% W7 q
customer-no
: _9 |+ [  ]+ R- V  A5 ~/ Ntrust-ok$ Z6 k1 M7 T7 S& K4 S% [6 v! d
trade-record-one-len;;trade-record-one的长度$ ]7 f4 }+ t. w, Z( p. Y( }
]) b  n7 M1 j6 e: Q* y, z0 u

, i6 p- t4 i8 f! K# I2 |( t- j;;setup procedure" D! x- P) A  f; a
) u) @9 K$ m' [; i7 J# y0 n
to setup
) s& T7 Q: Z, l* Y
4 i9 L+ n( @- ?2 }; Hca

, Q7 ?6 u( z: _
+ {( ]" [2 I1 B& s+ R9 w& dinitialize-settings

3 v) j$ P  q. T5 E
2 ?, N' ~8 c  Y: ^$ ]/ Fcrt people [setup-turtles]

8 E, r! f7 ?: H) q" v7 J5 S+ \" H
reset-timer
. V$ L! O, \0 b4 P" v" ]

! M% K! e* c$ ]+ g' _poll-class
. ?% i: i. D  P9 x' E( Q
0 A4 Y1 @) Y7 E  j) q! ?+ q7 O* Q
setup-plots

( W( \: T: u  Y" Y
* M: E1 ?0 {+ t7 ^- y, p* Y4 Qdo-plots
* U  p) x8 q- s* l! J0 R+ K
end) L' M2 v5 M# ^8 \

. D% m5 @4 c: f1 Lto initialize-settings
" M6 E3 x: k9 i6 s; m  O+ B- h3 d1 }6 f3 E. W
set global-reputation-list []
3 u% }6 H" n8 Y& ?

% ]# M* S: b$ t8 M& uset credibility-list n-values people [0.5]
# m1 i0 Y' y' B  |& Q
& B) n% n3 d+ B# _, [8 Q
set honest-service 0
+ \, ?8 h6 F; T9 I7 F$ z

: p# g' t. |" }. ^, n" oset unhonest-service 0

5 V3 k8 V# ?0 R/ {' c* ^
: ], P. `8 Q& }! rset oscillation 0
0 S) H- }) G- z5 ?2 V  j- Q, Z( s
/ f' C' a4 i# F4 X2 ~; K, I
set rand-dynamic 0

; [, }1 }" [5 i: }0 N9 R  `end; q. L% S+ H, O" g# i4 S
# q( z! U5 E3 f/ b+ z9 I+ ]- `+ J  i
to setup-turtles . q; |" q" t% D: x- L1 y& x0 [
set shape "person"
% ?$ R0 x2 Y. N4 M) V! c0 Ysetxy random-xcor random-ycor- r$ d0 V0 L& J" m
set trade-record-one []6 A8 [- e. @1 _
0 m1 v/ R4 M& C( a  d# ~; `
set trade-record-all n-values people [(list (? + 1) 0 0)] 8 o" ^) ^% a" ^/ X7 l

$ }; m- H2 L9 W- r0 Dset trade-record-current []* o3 I% d" d) b% |0 I: f
set credibility-receive []
0 [6 i8 F6 I7 m& T6 w4 gset local-reputation 0.5
1 a- Y& ~8 ]/ Q0 B* F7 `set neighbor-total 0# A% Q8 {) D" w
set trade-times-total 0
1 G+ f1 G* f, A6 h  ?) rset trade-money-total 0% s6 g' v6 F) w' P  M8 G+ X
set customer nobody
: H8 G0 @6 e: F# e: K2 B( I) g- G# \set credibility-all n-values people [creat-credibility]$ T/ T8 V  z6 r2 T; \1 X: a
set credibility n-values people [-1]7 i7 m/ m+ l! f) ~( D
get-color
* B: k2 I3 q! o+ s
# `1 Y% b' \. |
end* i! \1 f) z5 I/ Y

4 F! F. H* o8 a# w, ~! Rto-report creat-credibility% V& l/ d% m! r2 J5 }# G
report n-values people [0.5]
* G  s9 r4 N, \) hend
9 t8 K& `# v+ g' f; S' a' ~, a; H3 w, D
to setup-plots' M8 G+ j1 ]) [
# T+ B, z0 ]" g5 C+ H2 t7 j
set xmax 30
$ h- E+ t+ r0 \, _
1 y- R! q. s8 W4 g7 T
set ymax 1.0
( x# G# e2 t# U! d3 K' v; o

8 v# ?6 A" _/ @$ A* ~$ ~2 Kclear-all-plots
7 y: Y) c2 D# r, v$ _# U3 T

# I; {# w& k9 Y* N2 |! `0 z0 Csetup-plot1
3 j# n3 O' j9 J0 F" X) {' ]' L
% J+ ]/ W' i% C/ `6 Y
setup-plot2

0 _# L+ U3 c3 ^/ H- [; W
, N- Y' I) z6 N, ^; d7 qsetup-plot3

9 i5 u1 `# [, y2 P$ a- q+ @end5 O+ `& v' d) Q% g6 n8 E# n) M
" r; g2 S4 J2 j, I# ?; w
;;run time procedures% B6 G  f2 W7 ?0 d+ i& [

. w/ E* Z2 N# T5 ~to go( p3 p! e( M9 S% p$ |

" E6 a: O; g' J) A. Yask turtles [do-business]
! M+ e, E5 v; }- K/ r5 |& D" V
end
1 E2 e! f+ A$ I  M2 ~  m+ x) W: c+ ?& O9 c3 J9 ~+ D$ P
to do-business 1 w- I/ c% H9 o$ N! ?$ A; l5 Q# V* _
2 T) T' F6 r$ E$ u& A* P$ F

( G# s- s" `8 F) H3 `rt random 360
6 |: `, F7 s  M8 D8 v
- o& B! q" V. A% @3 {
fd 1

* c3 L2 _* X% l9 B+ O7 I
: Y; M" x/ I8 p  J+ b% d' jifelse(other turtles-here != nobody)[

2 U; B- {: }* l8 G! h# \
, U2 q# G* ?) B. k8 H' ?set customer one-of other turtles-here

$ v6 g- q9 {! ~3 W$ b$ ?1 m
# F2 R$ c* y: k4 B  O$ W;; set [customer] of customer myself
" M* {8 Z: a; D$ ]3 s% k0 Z- p5 q# H

* m) Q2 L: |% C- k4 l; f( dset [trade-record-one] of self item (([who] of customer) - 1)& @" \2 y2 ~6 N$ V, e& t' b5 \
[trade-record-all]of self& g; C5 q7 F! Z0 Z; f2 \, q% u& N% L
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: \% z- w5 e  |1 Z% t0 C% C

8 |+ B) K  A2 Y9 k; Pset [trade-record-one] of customer item (([who] of self) - 1)( A6 f1 n. P( A& R4 f
[trade-record-all]of customer

& k% B: s( W/ {' O/ B2 ^$ y& ~5 X$ g3 G  O7 B
set [trade-record-one-len] of self length [trade-record-one] of self
0 D* K" Q9 g) E3 ]% T
% c% w0 I9 f1 g+ G! I5 I
set trade-record-current( list (timer) (random money-upper-limit))
: D) G( p. g' X# t- m
3 L( u" l' q/ ~$ |1 D
ask self [do-trust]( j) u: G$ q1 e
;;
先求ij的信任度+ y3 B7 i4 T  a$ W; E  I
3 n5 A! R7 Q* |2 B+ O5 F9 V
if ([trust-ok] of self)
* ?1 |% o( J5 }1 h* Y;;
根据ij的信任度来决定是否与j进行交易[# G. l' S( k# J1 b3 f, B
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 ~; G$ v& t$ e4 @+ l! v. b0 l
! |- y# m6 V2 ~1 ^$ ~2 q# Y2 O( d[

/ R4 s9 i0 t! l% A& s  t; ^1 ~! f9 R* v
do-trade

7 f" o. G: T  H# c" |& {
* E: \: j$ E" S7 ?! y4 fupdate-credibility-ijl
' r& K2 H. o7 u$ Y

, R; i0 z7 c4 g4 p/ H$ n; Rupdate-credibility-list+ h% Y5 P$ V: L0 }
5 x$ q& _% S: B$ E0 ~1 I
8 o$ `; x  X  U2 w' T; r+ I
update-global-reputation-list

3 _2 X# V! n) G* o$ Z
# ^* n0 k8 Q+ q! D/ Zpoll-class
' R3 n7 Z+ w4 Z. D: C
2 M- i7 Z0 @5 o) _( `
get-color

3 z8 s: o' e) q+ f, d
7 n9 E5 \- O- s]]
7 O. {% Y2 p$ Q% u6 X$ c: E1 G9 l+ [  K  S9 \
;;
如果所得的信任度满足条件,则进行交易
$ W  ~  s0 D- ~- t) [. \4 c2 J% F9 e' p  Z
[

9 v, |' T% N' ^
/ {4 E6 h8 p' k- \/ Xrt random 360

. ]) W( F2 D0 R3 z' }. K( G  G
' ^" \# Z2 ]! t5 @fd 1

7 O* w6 c8 ~) }
$ e3 u( g. _& |( I6 Y, i% y]

) j( _! ~( H; j8 p: i& v; H; R3 I/ ~4 F/ d$ @' A8 ^
end
# @5 P. n% L+ R7 d- }0 W  T

+ e& z( u: {2 `; B6 C4 vto do-trust 4 D: P) \6 `% v; E  I9 `
set trust-ok False' H3 |. F- N' G# W. ^3 l! x0 v& ^

! S& Y5 ~" R. e4 y6 Y+ o
- d8 ], b1 l5 N- I7 Y% o
let max-trade-times 0$ f. b% P6 n$ P* H: u6 i
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 n; U2 y! X' m! `2 E7 z- blet max-trade-money 0% \% y. f, v3 z4 J) [
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# ?2 [" }# o% z1 i; nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 v2 H: ]2 Z) y4 ^/ h6 }5 k

' h% ?0 q1 W5 X8 U. O
; l3 `4 [. X: s% m; p+ R
get-global-proportion
% }, S7 O, H1 V1 [( n) Q8 qlet trust-value# R9 L5 n8 C. ~" q7 Z8 {, [7 v6 @
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)

+ l6 _4 Q$ W; ~4 ~- p/ Wif(trust-value > trade-trust-value)
# g; }+ |# e  y6 [[set trust-ok true]% ?% H! ?/ k2 J% `- M5 C1 x7 M
end
) W4 L+ z! j/ V; u0 z/ |1 N
  k- E* g$ D! h, {9 X% l8 Qto get-global-proportion. j4 [: }" p, Y" G8 f, I% a: ^
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! p9 D; Y* o7 R  J% Z* J" M; [) B[set global-proportion 0]6 H+ H2 e+ Q) u" E
[let i 0
& A' O; V' G0 ~0 N0 `. S& E, slet sum-money 06 ]' @$ T8 N3 L' U
while[ i < people]
- w+ ~/ g: h( b1 ?$ I* ?) A[/ j( R! d' Z* o+ ]5 C0 h7 \2 G+ q
if( length (item i
" z: {  q8 j! [[trade-record-all] of customer) > 3 )
, J- e0 f" J1 s+ B* {; B
[
" |* Z( _% N5 Rset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 C1 c# @; L; a]0 D* |% a4 U# O6 W9 v' e5 a
]
$ |+ w# ^: P6 \, ~7 Y: I' l8 Klet j 0
9 y0 {5 l( H5 N4 X+ i* Ulet note 0  D, Y+ t) w! C- ~2 E
while[ j < people]
. {- ?/ T( U! j  K& F  l+ N+ w[
9 Z# G9 S1 o, A( |. xif( length (item i8 H8 b$ R  V0 X+ v1 Y/ h9 }
[trade-record-all] of customer) > 3 )
: p' }8 ]4 }8 X
[# N# S. t7 l. ]( D* i
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: H' w: }* y- ?9 |[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 Y& N% t" J6 P+ t# ^) r2 o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: Q7 i% j: |0 |" a9 o9 [
]& b% r2 C# z8 u5 \9 x
]
6 W( P& M/ P0 j: ~1 r; j/ ]set global-proportion note
/ F0 Z  I3 Z4 Y3 T, J( A]! {. c- }9 J6 o% m. `+ C# |
end$ }/ P5 ]$ A' @

5 h8 E& X- T( R$ O: v4 Wto do-trade) j9 [2 T, k4 `* ^" V; w/ g
;;
这个过程实际上是给双方作出评价的过程
* A+ @5 O8 P' kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& X( g% k0 Q6 w% J5 T6 d6 t- @8 B6 M. Iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) u$ `! b4 f# M  _' p# Pset trade-record-current lput(timer) trade-record-current
: P2 G/ ]+ |" T/ G, E6 a: D;;
评价时间+ V+ Z4 W8 z1 G. Q' n; w
ask myself [
) W! e% N$ f) B$ t( n8 j1 \' Kupdate-local-reputation
) K: E  o- g" C# F7 m: T3 @set trade-record-current lput([local-reputation] of myself) trade-record-current! c! J6 u6 N6 R3 u7 }! ?$ g
]* J  \* Q7 Y% u6 \# `
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" p% D, i3 P7 L3 M;;
将此次交易的记录加入到trade-record-one
; y+ q1 s  ?7 T! \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 J5 S9 k8 O5 E0 I: X* Y0 B" P- Jlet note (item 2 trade-record-current )3 P4 J4 ~9 @3 c
set trade-record-current
" Q" W. C& L4 U$ X(replace-item 2 trade-record-current (item 3 trade-record-current))

% w7 G) \* l3 M1 l3 t' s0 Jset trade-record-current
% H2 p0 B' w* O3 l( O(replace-item 3 trade-record-current note): P* U0 K7 n1 `$ C

& S, Y# r/ d0 q; u1 ]- X

- ~- [( C# Q7 |ask customer [
# |# y% F, P- G/ n5 Oupdate-local-reputation
) k0 a4 X! @3 n" y3 R5 rset trade-record-current
* J3 y! V2 a, s* v8 {! m5 f: Y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 K/ e1 X$ w% m+ C1 ?( `]7 U% Z, E4 g% k6 s8 j; O; d

& A% X* z- j- ]  _4 H" r
! J" p% b; c) |$ i
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( Y+ Q8 ]5 i4 Q  _+ V( X
# k6 ^, T/ c- ^' _. B* ]
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* {  _$ Z2 r% J
;;
将此次交易的记录加入到customertrade-record-all. `$ U! T0 ~+ s, y
end! c: m6 S; l. P- R$ p1 K
% \) N7 ~' Z* Q( D6 j; g: o
to update-local-reputation
& `6 X. F( x+ q& Q3 |set [trade-record-one-len] of myself length [trade-record-one] of myself; z1 A* g: x! y8 l3 u7 J7 K& }
, `% ?1 \8 K+ L
/ R% q3 }# V7 O
;;if [trade-record-one-len] of myself > 3
! U1 _& E2 P. u7 }# T( D
update-neighbor-total8 O1 \7 x( B: D6 ^+ z! ]" Y
;;
更新邻居节点的数目,在此进行& Y5 s# s1 G8 s% q3 S, K
let i 3
7 i& d5 C: m% j' v( Vlet sum-time 05 l1 q! L) J, T1 T8 i
while[i < [trade-record-one-len] of myself]5 g9 ]% Q: x# ?. ]
[
  f, Y" i5 p) y; ~* G9 L4 Uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 @; j  T0 f0 T. ^$ j
set i
* ~* N7 H* H4 H0 a" O( i + 1)
' J; w4 _7 k9 M. f0 B
]
9 C% U5 L8 m) V. G: Y2 c# Dlet j 34 \" t0 D! n4 u
let sum-money 0
9 A( t6 A9 _9 ^  mwhile[j < [trade-record-one-len] of myself]
2 R3 f* w" z1 `1 Y[- m( Y, w9 |9 J8 T/ N. ?6 D/ f# ~( ^! w
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)
7 |$ m) B2 X7 d, \9 Q( W/ Lset j# n9 u( F2 B/ p
( j + 1)

$ k! L; I  U0 }]
% c! y8 ^! p: }. e  o( hlet k 3
) T* z# c1 w6 y$ ]: }$ slet power 0
+ U# X+ M( ~+ b" t# n8 G  ylet local 0
- L9 d. C9 N& p- }! C6 M9 g1 B9 twhile [k <[trade-record-one-len] of myself]  g# k  r/ d: O
[* E( P: f& K- s- w
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)
" u: X3 `% G9 }5 T, _! Hset k (k + 1)
7 v% ], r4 ?. r  h], Z4 u8 v* N3 X# o$ N
set [local-reputation] of myself (local). B0 h5 A5 |2 |2 ]* Z% i
end2 |0 ~; H1 ?  ~/ d% @2 s

$ `( `1 W  A/ M  l2 V$ nto update-neighbor-total$ z# T/ L: l5 `! g

' M( \+ N+ x4 u2 [5 X$ X6 wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- d. w0 E6 k% T8 ~
/ X( M% f  Y/ w/ T, o  I

- ]7 r  x3 k8 V% @# nend
% f! l2 J3 ]/ P: j6 L
$ a& j  \* i+ K8 i) B$ i: l: _. Dto update-credibility-ijl - U' t0 t, d& N/ A' h' S

- V2 f6 l' u9 p: j; k- k;;
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。
" t5 C0 R. g4 y+ D5 Tlet l 09 s  c! g) i: d- \. n
while[ l < people ]
; _1 f/ V: r& K' D/ J;;
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! g5 q7 F' d% i. X* N) |  Y
[- [4 ?; O; d4 F$ O
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% t3 w$ \/ m% q# N
if (trade-record-one-j-l-len > 3)
8 J2 \( e" G" v* ~2 i% 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-one  q' M5 \- T/ z+ b
let i 3
  ]  T* Z1 r9 ~. V0 ^  A$ K) tlet sum-time 0
3 m7 k7 e2 Z' Rwhile[i < trade-record-one-len]
9 v* K9 {: f8 O% |1 S( Y* [- ~[) x8 {' C% [, M$ |1 M/ O
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 l! N0 n. A: s( ?# n# g
set i
& m2 @1 C5 ^  ^3 P- I3 s( i + 1)

! m0 ^& b3 B; v" G9 L]
; C) j) ]( ^/ h8 {; Xlet credibility-i-j-l 0
0 J5 o8 a# I1 y1 w9 C;;i
评价(jjl的评价)
; H/ D; M. g: s. f; E- _2 ylet j 3. z* Z0 q5 l5 K
let k 4$ h# J3 j3 r. p& A$ ^
while[j < trade-record-one-len]# I4 B0 y- A7 O- [' O4 w  J( W  `, j1 Y
[. M0 M3 U' z9 Z' V- t: y" v0 x
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1 u% F7 D4 T* B6 D
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)
+ h) M! c: r4 B3 Nset j" c7 [" x. r! a% y* R
( j + 1)
/ z* e9 m# d# K; S2 G# e5 [
]& \, P4 y6 s) ~) v$ w# n7 L
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 ))
# @- J* p2 d6 h+ v% n( Y/ w
' ^, L; }( e4 ~

1 e2 a: `1 X9 y4 f! D( v3 Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 C; H" x/ `$ g1 N  u5 S
;;
及时更新il的评价质量的评价0 V' ?8 `' V4 m6 h" f" ^% `
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& [* Y7 ]& x  p: Z$ u% P
set l (l + 1)
0 c( k1 t0 l/ ?]5 X# X5 J% n6 S$ M
end
: m* D. S+ l" J: Q* D2 P( k7 }# |* b7 A% d0 ?6 P+ r+ Q
to update-credibility-list5 h# ?8 H, V* l; R4 g6 L& L3 o
let i 0
$ P; L7 @+ k) E8 b2 ^while[i < people]6 Y' S! G7 A/ w2 `$ |3 m
[
6 q7 K  U# C: q& U1 T% clet j 0) F; U+ k7 o, h( s( E* S
let note 0
7 b) J+ u/ ?+ {& y  U9 h1 ]let k 0( w9 r& Z" {& r9 `! w6 p
;;
计作出过评价的邻居节点的数目
1 h* y) Z% o6 Dwhile[j < people]
8 c0 D" X+ ^% r; ^4 P: s/ q3 F* w[( m+ n, a$ b" ~) R
if (item j( [credibility] of turtle (i + 1)) != -1)
: I) x+ P6 K! n5 b;;
判断是否给本turtle的评价质量做出过评价的节点
: C9 d7 F) ?0 c' ?+ C& n[set note (note + item j ([credibility]of turtle (i + 1)))- M; z1 Q4 z: V: h% D1 l# R$ o* P) d- B
;;*(exp (-(people - 2)))/(people - 2))]

3 l( t. W) [) Bset k (k + 1)
5 P+ r+ i+ j" _2 x9 J]. E/ [4 v4 S! o$ [- p
set j (j + 1)
, J# W6 b- f0 u6 Z- Z/ V4 O]
. V  f- U0 }1 Qset note (note *(exp (- (1 / k)))/ k)  l8 f* K1 c& E, H
set credibility-list (replace-item i credibility-list note)
0 {% h3 T1 S4 Z4 q- M9 wset i (i + 1)- f! _0 E  f* d) X
]
1 q+ u  a$ N+ ^! |end, j- \( y6 E. p- q& S. |9 k* }$ Z, L

9 h% b% z" ^# dto update-global-reputation-list7 V+ b( R0 U! w/ y! A
let j 06 V$ ^& C9 j9 P7 Q
while[j < people]
% [: p( ~0 g4 Y! G1 g' p[
9 l  c& M, B5 M+ R- a; s6 nlet new 0
! @* @; k$ @3 f; @$ I;;
暂存新的一个全局声誉5 Q, s' W; ]" J6 t
let i 0; v* Y* k+ e5 n1 R
let sum-money 0
. L( Q# B8 E) {7 B5 @' `# t( w; mlet credibility-money 0; G/ m" g! e( u4 L
while [i < people]
) U' e. \' a) @0 V2 V1 L$ f[
( P# w( G, v5 G2 X6 _1 A' xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  r5 }5 k7 ]$ V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): M5 F" g& T8 V& [' e
set i (i + 1)0 V# }) _! Q& z. w
], H2 r* t3 {" s4 e$ N6 t
let k 0/ h: Q& r- w. n+ m. A" x
let new1 0$ h( k' N" Q6 |; x- X) U2 I
while [k < people]2 C  G* U2 L' k% V/ R- e, [
[: |/ y) M1 t; K: L; T! E6 c
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
- b+ o" ]# e" S+ a, i& e% h2 rset k (k + 1)
; n5 F2 h; k( U6 ?]* D9 h2 a+ R$ v
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 v& ?, ]' R+ Vset global-reputation-list (replace-item j global-reputation-list new)' w4 `  U9 P  P8 a; c' K
set j (j + 1)% e; P! T1 N) \1 ]# ^4 A
]& m- g) m0 X. d7 E" c
end% y+ O6 {( U( T* E
0 u: U4 e9 M  r/ O; ~
# Q+ G  {  V% E  @8 S. E

$ ?! I9 g, C, J# ^9 ^3 k. _: B2 q8 Xto get-color
7 T) V3 ?  A1 o- V1 R: E& E9 i* n% a4 ~; a# Z1 f
set color blue

  J* g, P) T% X% R" b- U# y$ x/ send
: a! L! @2 v3 b& R" z+ E9 B3 u; U* ^& A" S
to poll-class
4 y  b( q* l* A& u( gend
; u9 o- Z; e6 }/ q  q
  k, {0 {2 C; F  a* bto setup-plot1* |, `* h' ~0 q1 d7 M
& m! S3 d5 n( T" m) P" f7 `
set-current-plot "Trends-of-Local-reputation"
% t' C9 D! _! r/ x$ }3 v

: x( L9 ^: A' Eset-plot-x-range 0 xmax
6 ^( ]7 N# p) x2 J) x* ]
. R; h; O, h8 T# L
set-plot-y-range 0.0 ymax

9 o  F& ^1 b/ gend" H- v+ g7 a1 W  w& b
7 d# h: A5 c, v& o+ @. N1 K/ c4 F
to setup-plot2/ R, a0 z2 W+ g& i3 E! V
/ N$ z/ R7 r$ O6 U9 l& ^
set-current-plot "Trends-of-global-reputation"
4 F5 K- B/ N6 E5 H
7 p+ K% f6 Y7 g9 L! w
set-plot-x-range 0 xmax

3 g+ A. J7 Y$ R2 d4 t; C3 V) N
5 J. j+ p% s. C1 x( d7 D5 ?set-plot-y-range 0.0 ymax
& k6 M2 E6 B3 f! f& ?
end4 B5 O% J# E9 Z. c& Z# s/ z0 F
3 N! W# g& |; G4 s: {0 R
to setup-plot3
$ Y7 T( ^2 _1 e" |* p, I: l! X  B% I
set-current-plot "Trends-of-credibility"
: c9 C* b6 t+ B. |6 H7 x5 r

) ]9 i5 G% O* v. eset-plot-x-range 0 xmax

% X2 f$ Z( ]2 n  |3 k- b. r& C# T8 {5 l# d9 C% J4 A0 }
set-plot-y-range 0.0 ymax
, X1 e6 g& L# \( {# W! T  R; D
end: Y7 Y6 i7 T" H7 L; X

' C( `* `; z7 Z* ^. F2 m9 zto do-plots
: ~2 G  ~9 ~. a/ D5 cset-current-plot "Trends-of-Local-reputation"
* z  k" C# |- B2 |: M  Iset-current-plot-pen "Honest service"
0 {/ g0 i9 j( t% |end  j. \: y; a! s

1 Y/ x' ?' I/ p: 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.7 d1 |/ }" Q5 N- z% \

9 z0 }2 I& Z6 m* G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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