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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:% H8 z5 q. ~7 ?; E$ L0 a2 }
to do-business
* H0 n& |2 ~5 [; }  X% x* Y rt random 360/ a: W% W, j( ^
fd 1
+ e- h& `1 z; Z) T: V3 R0 N% P ifelse(other turtles-here != nobody)[# S& ?, r/ p& }7 L
   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.% \( D! X; T( t' u" ]5 ]/ C6 g) K3 U
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) g" l9 l) d7 ^, J) O4 @- v" w   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' \2 D: m. }' y: i" {
   set [trade-record-one-len] of self length [trade-record-one] of self5 K8 ^5 Q3 ?' a- M: {" `
   set trade-record-current( list (timer) (random money-upper-limit))8 l# G/ d; N. u; d' G8 z) z

& j% I3 x* j3 ~% _9 i$ P问题的提示如下:
- Y* y$ O6 ]; u. d  u# K6 w' ^' H8 [6 u9 l/ i, P# h0 ?; j2 _
error while turtle 50 running OF in procedure DO-BUSINESS
5 z5 b# N8 O5 m% P  called by procedure GO
8 N5 _) B6 q$ K3 ?7 d+ u& FOF expected input to be a turtle agentset or turtle but got NOBODY instead.4 O9 h( K1 W+ z9 E/ E. E( ]
(halted running of go)1 r+ W7 C* s0 F6 w% p5 D6 {
7 t* J0 ]2 @( F& E) ]/ }0 ?
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~~
" c+ H7 V& Y. n/ b/ H4 }* x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+ t, i. ~" @+ S7 F/ `, R2 v
globals[" O( E9 q. G: T2 r. U2 D8 r
xmax
9 B9 r; D0 ^5 fymax
! c) G# s$ M! fglobal-reputation-list
8 G; `& }( t- Y  L0 O
( m$ e* Q) h1 W& H( j;;
每一个turtle的全局声誉都存在此LIST
# H, v* @; z* P- {* y2 z. m! pcredibility-list0 ^5 S5 r5 G5 N! |, ~) `- F$ L
;;
每一个turtle的评价可信度! f" `; s: m) E; x( J9 V
honest-service
5 U: `* Q( Y1 y! a1 B- Y( kunhonest-service- J# g0 D2 q0 m7 y% p
oscillation/ C" u3 G5 H3 [, n( f; V: L9 e
rand-dynamic
6 y+ n  k& E( g# i4 }& r# W]  K3 m7 B* n3 g" q% h# t( a$ A
, m2 K. \2 I2 C6 i
turtles-own[9 @9 Y7 h, U7 r" h9 r1 x
trade-record-all) S" j0 N+ _4 y8 F6 q2 e
;;a list of lists,
trade-record-one组成
. `/ i! U- m+ C: K, btrade-record-one/ T# I  ~0 b* G) t. N
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录' d9 e7 ?' J7 A' o/ ?: S
3 V4 y0 S+ B0 [; f6 U6 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]]  F. A: f8 y+ h/ a2 I
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]0 |, @# D. A, `, P, y0 N% e: k
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" ?' u5 r& M$ W' t" J
neighbor-total! \; \. I# q# J* I
;;
记录该turtle的邻居节点的数目
& Z% e& @6 r$ {& l' g% b4 qtrade-time* m* q1 F8 J5 q; `0 l5 o4 Y& s
;;
当前发生交易的turtle的交易时间
2 F) W9 S) V/ k& o5 F$ Happraise-give! K1 y3 r: @' q- Q3 y0 R- ]- ~+ Q
;;
当前发生交易时给出的评价
$ N8 U$ W7 F. G- Q8 ^appraise-receive
+ `6 @! f% f# a3 T5 f/ Z" |9 F( n8 a;;
当前发生交易时收到的评价
: Y, v5 z# c& N' P. b% h% p0 M- x# Qappraise-time3 f! A- _' |& ^) |  v' B1 V) P
;;
当前发生交易时的评价时间
5 A% ^. w/ s. c+ p- A  A7 Flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
  ]' h2 d, k$ W# y  r4 m+ B9 Otrade-times-total  y$ y% ~$ [2 [; M) K. E' D* D
;;
与当前turtle的交易总次数
: Y, ?1 v- ?1 i! {3 [  r0 Otrade-money-total( k8 S; ]9 \) Y- Z* j$ ~( R
;;
与当前turtle的交易总金额
* M8 k" }# @1 ~' mlocal-reputation1 v/ ~( B$ H! [& x
global-reputation4 G: B5 |  i4 R0 L0 x1 I8 \0 A, S& s
credibility
; A5 i9 J6 l7 V" M, ~# _;;
评价可信度,每次交易后都需要更新
& L8 z/ Q! B0 kcredibility-all
& o# ^' Q* a' E0 ]) i2 F- ];;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
2 N! c; l6 ~1 y3 M* |+ r& @! j+ i* M( @6 b" G- N
;;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0.59 a  G5 z0 M- d- |
credibility-one
; X8 H$ T8 H& C* f/ 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people5 D0 f; q" Q- S. s. T# n2 w8 [
global-proportion3 h0 K# E& I  ^4 L6 X
customer
4 n3 [9 f+ D( v6 z5 @customer-no9 u! {; w& i& i0 p* `; K
trust-ok
& ~% C; g0 ]6 I1 W7 G1 a1 t6 Vtrade-record-one-len;;trade-record-one的长度
4 _0 {- J- I' b]8 M2 |+ T) }6 @5 U1 X

: L: `: U9 i7 x: };;setup procedure
- v' a8 ^0 P/ h/ `3 a
% \1 t; N( h5 `7 j8 X! `to setup8 E$ Z! ^6 h* f4 {5 e
9 h$ I- t8 Z% i- }2 n; [
ca
* B1 Q/ ^1 H. |* U9 }+ b1 ^! H

, Z0 n: F  ]; p: h' K. Einitialize-settings
+ _" ?3 _) j* |. H  L8 s' z0 f

2 R& E9 R1 {- e. c6 s( xcrt people [setup-turtles]
5 y7 W0 K5 }9 o. v4 b7 ?% P' H

6 T) f% r0 o7 E3 Areset-timer

) |; D  p, s7 Q: `3 z( g5 {4 h8 b$ g6 L7 }& }5 @
poll-class

% P5 s8 }- D3 R) E/ Y' ^3 v( L! U5 L& H3 u& x  u* m# w
setup-plots
, A7 E& ^9 B' C& y# {- ]

' p) ?% v7 E: s" r$ k; Y& D$ r" ^do-plots

+ I3 g: A4 E! J3 ?& v# T! {end
4 s5 D7 N* r8 v6 E- u; e% [4 D% i- B# u( `
to initialize-settings! D' a8 O6 g4 X4 I: i% t
9 F& B' |5 d) w, U3 h2 G) {( ~
set global-reputation-list []

( {- X4 Y8 {, T
  c2 H) g( l) n# {. U$ Nset credibility-list n-values people [0.5]
3 ], h) [3 d& L  a: E
7 c$ K' G( A" h! w( t
set honest-service 0
* \" F+ C5 ~* }. V
! N& `$ r* A  d0 w
set unhonest-service 0

' G  r" H1 i- m9 ], E8 s* H* ~8 }6 y) A' [% W& f) X/ q0 ~
set oscillation 0

& i3 q; @6 c! k! s  P* D7 g
( k9 k4 ~$ H. g/ w! iset rand-dynamic 0
; O! X! Y! ?+ }4 r. a# X, ?
end1 G; p' R4 c" ^4 {2 V# B
$ n+ r  H! l; Z$ ]
to setup-turtles
# L8 L& O8 K, Q- D6 Aset shape "person"
3 U$ @) D8 }4 y% Ysetxy random-xcor random-ycor/ ^$ ], ~/ s% W* A# [* i& V
set trade-record-one []
1 u8 }( P( w, d, |( Y

- m! `2 _" J7 L6 x. P6 \set trade-record-all n-values people [(list (? + 1) 0 0)]
7 q5 R" ^9 g* ]& }+ W

* E+ o6 D3 W+ [$ Z; L- q2 Wset trade-record-current []
& `: S, ]8 M" B5 \4 kset credibility-receive []* I; a# {# Q# _6 n
set local-reputation 0.5
5 U+ L/ |. D! M: a# M' bset neighbor-total 02 D) {" \! S2 D* r- Q
set trade-times-total 08 n1 E: q. ~- L, S
set trade-money-total 0
2 e0 S3 l8 n/ I3 Y6 m; q; |* U6 oset customer nobody
+ Y  N4 y4 i: z, L+ M* gset credibility-all n-values people [creat-credibility]4 Y+ ]# u" \; v$ S6 V; R( V& `
set credibility n-values people [-1]
' p/ p4 Y* o  @' T5 m, p) Cget-color" w9 w! A* n. j. q5 v
$ m# A# K( y- y  b7 w
end9 d/ |$ F5 n! X- z3 e
. H  E) u4 z7 G( S- ]
to-report creat-credibility* L; L+ P8 q5 L0 `  }" g
report n-values people [0.5]
& y3 X. g; |5 r+ \" J  Dend( l4 Z: f  g6 N! S3 F# W
  W4 E6 q- @; B2 B1 }
to setup-plots
3 }0 U# |9 t8 O3 b- H
( G8 z/ Q4 O1 }1 p0 Zset xmax 30

4 }% Z7 M% r( ^: m: O4 S) U6 e# O% h  [
set ymax 1.0
9 P1 ~. H( ?5 z4 `: W6 ?1 R

/ `5 R  w7 w4 P# U5 _' Kclear-all-plots

" g6 F$ p2 q9 A# }* x7 G
* c* v0 }0 F3 B% Dsetup-plot1

" R9 i9 K/ |3 Z1 x) Q) }; y1 y# t  ]& X' j3 ?4 I- g) A
setup-plot2
8 w. @; z9 x7 W- h8 z+ C

" Z/ W1 W3 x7 F7 y, b) P3 Isetup-plot3

9 g# s  y7 p; h7 P0 B! Y1 Hend
7 u$ m& S6 o1 ]/ x
! K+ U- F5 R  r8 l" O0 b, G# }  q;;run time procedures" {* O6 I0 z- z; J$ L! e

8 s, J( M' e/ o* o8 J' I- }to go  o4 `9 ?2 s& k! A
2 L2 f; `. d8 \8 d& z5 |
ask turtles [do-business]

# G: a; ^" h" ~6 kend* |! Z% U# g6 }4 L8 ~; k6 T
0 N2 Z+ t9 ^) ]3 [6 D3 q. q; h
to do-business
3 V' g3 s, S6 m6 [; F' C' }" A

( P1 w) S7 i" F# N+ F$ D6 H# O/ C. k# m7 o5 v& l
rt random 360
5 C0 [3 Y* {6 v/ d( N9 g2 ]

' u! ~/ j! j; c$ f2 v2 }fd 1

$ [; i) a# y0 U8 o
& P5 T9 |  v" s- Iifelse(other turtles-here != nobody)[
, p; P, u- y* S9 c9 x
: F1 v1 K7 Q+ e6 [
set customer one-of other turtles-here
, q, U4 `  A" e! d# ]; q

3 |% z5 v4 r. W# Q% \;; set [customer] of customer myself
9 D6 H7 l# f9 a/ i# v5 k" ]
, o* _+ l  e5 m: Z* d+ O5 B
set [trade-record-one] of self item (([who] of customer) - 1)
( l8 S1 b3 C- q6 }8 ^[trade-record-all]of self4 _0 v* h4 C  z+ E' |+ N5 W
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, M9 [& {9 y) Q3 v

# A. |* ]! K& H5 `7 @# g$ c6 tset [trade-record-one] of customer item (([who] of self) - 1)2 N7 {* @# _7 `3 `3 B' g3 h" p
[trade-record-all]of customer

- A1 o" @6 }7 p! d7 R/ ^- u, F/ a# y4 _/ O6 B
set [trade-record-one-len] of self length [trade-record-one] of self

: ?0 r7 q  D9 p" A0 n! B
! o+ w* M% W- M* V0 Bset trade-record-current( list (timer) (random money-upper-limit))
$ Y- r0 L' ~3 ]( q6 m  P. o& ^" R

! K8 p% s3 ?- J$ q4 x. ?* Cask self [do-trust]9 [  X8 i$ e3 N7 V+ f0 F
;;
先求ij的信任度% Y, l3 y. B6 i/ j! o1 Y
( D; R% P" Z* u
if ([trust-ok] of self)7 C; p$ ^4 v$ m9 o" s
;;
根据ij的信任度来决定是否与j进行交易[
) z" m/ G& a' i/ `4 W5 [4 oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ b% t) F! i( f: Q0 U$ m# i9 |9 F; Z5 l9 ~! e
[

* O5 u8 Q* L5 x/ a; f: X! ]7 i3 @4 B- w9 ~
do-trade

' H4 Z: u7 D- N/ R
9 J7 U5 _7 L/ ?update-credibility-ijl

" {" \5 F$ _3 x6 U  A0 O8 F# ~9 r( }& ]/ J
update-credibility-list
2 P% I' o8 a; u! D

( r4 Q8 P2 u) k. N- r( s8 G. f6 l3 [; N* w0 V
update-global-reputation-list

* F; ]0 f' j+ h, C' w9 Y) M
. v1 R  @" l8 [. K# Z1 _, X5 upoll-class
# d7 w  R! Z$ f- O' z' L+ F6 |
, g' Y! r2 T$ `7 }7 M. A3 |
get-color

, a# N/ a* m; b6 m3 L* c+ K! ~- ~4 U( A8 k7 }$ d) x; e9 ]
]]
$ r/ q8 F( T& u) `/ e% ~" m& e# p% Y. X# n
;;
如果所得的信任度满足条件,则进行交易$ `( V1 ?! n# V9 _3 t5 J; m

# q# \; w! z6 n4 [/ k9 ^+ ~[
  V& ~7 Y6 Q6 {9 R
0 P9 o9 [. A( U  ]' E' V: B% p4 u' F
rt random 360
4 a  T+ C. m3 S/ y2 S9 i* m

+ L* _7 a+ y) M6 v  h" J* pfd 1

: k  B6 x9 T( p/ c9 T  N% s# h, D7 B2 g) [8 M$ |
]
* B% N9 v5 [% P+ Q+ F: Z

7 i. l, ~* f- g& j" ]- xend

$ x# U: `5 B6 T, H( H7 h  E
" |" ]8 ?4 Y2 }: m& B. L7 Z# B- sto do-trust 9 g' r4 \* T  I  g* x; c
set trust-ok False
( |( [  T, |6 r, F3 M2 |# @- _1 S% A# Q0 T
5 o, C% a6 R8 q7 `; B4 Q* y
let max-trade-times 0
  b2 X% m7 d5 i: X9 G! |+ eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 t( ]- \# M9 C1 @, Flet max-trade-money 0; N/ N! K; v4 q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" C- o, D, F+ I3 Y* y! S8 ]- h6 Flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ k0 f4 w+ T8 G1 M! E. a
$ O7 i) {3 M4 X' m' d8 g

! s$ {9 B$ ?' d% f9 T3 O4 `get-global-proportion) f3 {4 b6 O6 a* T: ]2 W
let trust-value
, r0 s6 B( O1 r# Rlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

+ X7 E  x/ W% _) Y! j& @) xif(trust-value > trade-trust-value)
, ?* o6 ?3 J8 G; ]( x. j9 d[set trust-ok true]* {: L; L: c( e: g1 ?$ H+ g: J5 M
end; b, a9 y4 p' j. l

4 y  y0 A/ ~5 m- }- z) F' tto get-global-proportion4 V  Q. |; z# Y9 p( F
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  }, Q8 M2 G0 f4 n
[set global-proportion 0]3 R' V- m4 G* k0 u  d
[let i 06 L4 W1 {' ]9 A
let sum-money 0
$ ]; r) G( A4 vwhile[ i < people]
3 U* q3 P- }% v& y) P% \; O[
7 ^4 v* R$ D& Z5 N4 Vif( length (item i
2 Q% p  U1 S& b2 i' w( y2 v[trade-record-all] of customer) > 3 )

0 q8 @3 P. E1 p/ E1 a8 R( |+ L9 X[8 ~) p* _4 G' |7 p! ~+ U6 B1 [
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) g. ^, ]9 H7 P4 u
]
" K% h1 `( i0 o]
! M  c! N" ~$ P1 X5 Mlet j 0
; F! l" x$ c* Z  B. xlet note 0( A5 F9 @1 I2 G4 }+ C: n
while[ j < people]
1 h3 j6 X9 ~" _+ W! @[2 e! Z0 ?, q6 Y7 V- m, W" A: a8 {, E
if( length (item i% Q, t& J- O0 T% g
[trade-record-all] of customer) > 3 )
' p1 o; Z1 l: i4 C& H% ?
[
& k. K  W8 @. N& B7 difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" J+ q) a# o' A! z* t& K
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  q/ n8 s. |6 \# ?[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; B; w0 ]# H4 W" j4 m]1 M& s1 {- f! _, _
]; K  [4 L0 r  A+ x& n
set global-proportion note" Q! n% Z9 l* t4 o' i. [; X
]2 D+ M2 d4 R0 h% G7 i
end8 x$ n* F! U4 |% n- T5 ~$ ^, N
& R2 y. G# q- |4 B+ ?1 f
to do-trade6 o: ^" S  x; C' d: a! k
;;
这个过程实际上是给双方作出评价的过程
# i) c* C; X- I! @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: Q0 ]% I* P9 @- Sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ h# [; h# b% l8 c
set trade-record-current lput(timer) trade-record-current
; F' Y  N( v4 b4 x6 b, @;;
评价时间
3 N  U9 F" _4 yask myself [2 ~" P7 `  D( c, q0 r" s* }3 S+ D
update-local-reputation
# G; T( ]" I3 Oset trade-record-current lput([local-reputation] of myself) trade-record-current% J6 X/ V; u6 A: b3 E3 H8 c* w7 T# f" S# q
]
  a9 P# A" F9 \, a- z; W& P( U+ K' {set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) L) p7 z+ i2 N% V! [- s1 M
;;
将此次交易的记录加入到trade-record-one  m7 W' @8 y8 K7 Q0 M5 g
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 A; s2 s  S. O) f; j1 [
let note (item 2 trade-record-current )
: w0 y2 R! P. e& H8 kset trade-record-current
+ m1 m  b4 F3 v' @" S(replace-item 2 trade-record-current (item 3 trade-record-current))

- n0 r% B2 u: Tset trade-record-current5 A# ^+ r* w0 p8 ^5 ~
(replace-item 3 trade-record-current note)
! C& {( v2 t! R/ E3 ^# c. p! w) }
) y- s) B# `* T/ {; q+ E& l
ask customer [
4 E7 O. V5 n+ z5 t3 Vupdate-local-reputation8 Z: Z% y) @0 K; _5 l' z" v
set trade-record-current! q0 E% U) B& W
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 X7 P/ q7 V7 W/ |! @  z) n
]  ~; t& `( n; o6 }  J& [

3 [, J( [8 M9 J, u

( y! W$ J. T7 Y2 J! j9 Q& k0 [set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- i5 j4 Y4 o9 I- ~
5 i( L3 {1 P: X) Z; N/ c$ m! B8 j* M
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! `: o: A3 r( \;;
将此次交易的记录加入到customertrade-record-all1 ^& n* I% c" ]7 q/ d$ u/ k
end
( c: d7 T' @; K7 b" x4 z4 L1 g% k
) w6 N6 l6 p' D. G. q& z' [; Wto update-local-reputation7 t7 N8 r8 k$ q
set [trade-record-one-len] of myself length [trade-record-one] of myself
: d6 K8 v# v' f) }; H
7 Z6 V5 M! ~( g! h' T: A
9 I  h2 S" A: p1 T. X+ v;;if [trade-record-one-len] of myself > 3

% j3 I4 W; ?* {3 F8 \update-neighbor-total
) i0 R4 `) P. v4 U;;
更新邻居节点的数目,在此进行
4 X. u/ q& ]+ x$ t7 |  Plet i 3: X- U$ @/ q( O" B- J  j  l
let sum-time 0
1 i; d- O2 ?# }5 u3 Y& uwhile[i < [trade-record-one-len] of myself]# r0 K, Q; @& F; @! g
[
' N- }  h1 \& X( ?* wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 N! O5 N$ @  E7 v1 z. U6 e1 `set i
7 T. X  j; K, l  Z; _5 q! _6 |( i + 1)
& \# \# e4 k5 H& g5 G7 ?- C7 Y
]
- ?1 u* \1 p4 k8 ilet j 3
  ^* b* a, a4 K; T" Zlet sum-money 0
$ s5 m# x, s, A9 nwhile[j < [trade-record-one-len] of myself]" j, s$ f$ p2 X/ J1 h9 t
[
! h3 E6 q2 @! A# Fset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)$ a9 B& f+ i* C
set j
/ }* M/ S# r; @( ~& w' H! K" c# ?( j + 1)

' D: Z, j3 ~9 g0 R! p. x]* D9 B# C0 {7 o. G9 v% s" d: T
let k 3' m# `- _" ^4 \' ?: V0 w/ ~: w
let power 0- M+ d2 N* |6 N6 t( [
let local 0/ z( c; W; W! a8 L7 Y
while [k <[trade-record-one-len] of myself]: |/ a+ H- @" ]9 s' z% Q
[
3 F6 w( ^( U& w" {- c+ s7 Eset 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) . b7 L/ M1 Z! G0 @8 n
set k (k + 1)
0 S; n3 m' x  n9 ]2 C! J0 w]* M5 J# {2 L( @3 ^- y* C
set [local-reputation] of myself (local)1 `6 k. r9 o& K6 z+ G' G8 q; J  f% ?
end
6 F* D1 z- Y  x0 X. {7 u4 ]2 s
$ E( F) ^, K* ~* e% e( v8 N/ yto update-neighbor-total
2 Y9 k" H# y' D9 h, M) E! q
4 s! v8 x% w6 {6 ^1 `if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. _* j. G6 q. i) @( E/ H# y9 t2 R3 u! L: W8 d
: ?% V8 s, y# t% v
end5 \/ y& {5 [8 b2 ~

3 B) r2 e/ K; D7 xto update-credibility-ijl
% x& |( U. z; s6 U3 H. `- u$ y9 j
;;
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。' z$ A+ p6 r3 [6 u) d* d& N" J
let l 0
: c2 E) x# Q! v0 ^# twhile[ l < people ]% K" E( C# [9 G/ A$ B% @' f
;;
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5 a. P0 |, {; M* d+ \0 I3 b
[, B; f! N, i/ R; v6 R- D, h
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)* L, X5 T, X6 k1 l1 T
if (trade-record-one-j-l-len > 3)4 @' d- Z% p& p$ B& I4 o0 P3 N: o
[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; z) ]4 z. L4 h3 {2 X7 L
let i 35 e$ O# v8 u* I& m: e) h/ {: m
let sum-time 0
0 k$ J, ?# h( t3 a2 g) K' I3 ywhile[i < trade-record-one-len]8 E- U8 `: M9 D5 \/ L
[
- d  X% K/ s* m* g1 N6 Yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  F' V! M6 p4 G
set i
- b* f  x: Q8 n/ o( i + 1)
) S$ z# I! w# E( w% D
]3 i. Y# h& e  ]! n& S
let credibility-i-j-l 0
% B. Y! n; B2 M7 z8 t;;i
评价(jjl的评价)4 X* `. F/ S1 ~, v+ I( K
let j 32 U2 `$ v9 c: ~- D( C, w
let k 4
4 g1 K/ j" b1 W. [while[j < trade-record-one-len]) L+ D/ K" d& Q
[
' G  B1 A2 @+ D: X9 {. {  ]% e2 u5 `8 Fwhile [((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( S8 D# i2 M9 z) p( h; E$ [* w
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)
& V8 C$ b5 b# {set j" F) w4 ]" ?+ J2 T
( j + 1)

1 J5 S/ v( u1 t, ]]/ h; i  X. Q7 {# L7 ]$ A8 _
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 ))
3 d* V8 P  T1 H5 c
: b# {1 o1 L: a% q  R) n$ c  M% m

; N- E% H1 M$ m& L6 K9 K% [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  D) ~- x$ e- g) P- _;;
及时更新il的评价质量的评价3 n0 }  x, _, L- b3 Y
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 h3 l" R# ^" c9 Bset l (l + 1)
' I/ d0 o. u- ^3 |3 n% l8 {]
' P& P# `: Z0 F/ \! H; n; R% \end% v# {1 g) {' Y2 J1 ^

/ X" D( z; t% {& m" o) ^3 N2 g. ato update-credibility-list
4 {$ x+ N' J" A% D) vlet i 0+ H4 Q* \' l4 D4 j% a0 {$ j/ y' U
while[i < people]
- G* w( B- n7 Z! r+ L[
1 I" y7 ?  i6 v4 }1 _3 b' v2 ~let j 0
8 D4 F! ^( A9 \" Z2 ]2 _) plet note 0
8 Z" m0 \. a5 O8 D; k( x# `+ Klet k 0
$ B% v1 U" P: ?+ Q;;
计作出过评价的邻居节点的数目+ Q4 H  y- r: T  v( G% W: U
while[j < people]
. Z0 I, r$ W5 f0 Q[3 N- B+ v1 @) d& ]7 {
if (item j( [credibility] of turtle (i + 1)) != -1)
' `- ^7 \  X( ]# Q# R5 q; ?;;
判断是否给本turtle的评价质量做出过评价的节点
% i8 s) u) i4 a[set note (note + item j ([credibility]of turtle (i + 1)))) i9 a3 m7 O" I) q
;;*(exp (-(people - 2)))/(people - 2))]
0 p, i4 k0 c# M
set k (k + 1)& I# O5 H. m% a/ s0 `
]
$ B1 s- K7 o+ o* l' y! s2 M# W2 {set j (j + 1)
4 m2 M6 c. U! o) ^0 N2 ?]4 x, R' ]! X! i) Y8 R
set note (note *(exp (- (1 / k)))/ k)
# J  g1 h, u* |+ i) n" _set credibility-list (replace-item i credibility-list note)
0 x: C7 [+ b( j( R# B2 {3 bset i (i + 1): b! U% a% a' p. c+ Q
]0 }  t1 ~6 K1 ?0 j9 Q9 Y' n$ |  F
end0 T. i: @+ q0 ?( \  x' v+ ~: H# L
8 S& i- U( ~  R; ^1 ~
to update-global-reputation-list* W1 a8 R* X1 X9 @+ h/ v& ~- o- u% R
let j 0
1 z5 i$ q  t0 s" wwhile[j < people]
5 Q2 e1 R. C! o9 Y( G% ?[" F- C+ y' ?) b! q
let new 0! n# s$ M/ {# O. m
;;
暂存新的一个全局声誉% W9 L. `& Q; I4 s  B: R
let i 0; x8 M4 B$ K, z+ u9 A' G
let sum-money 01 \! j+ ~1 ]' T' s: X
let credibility-money 0( n7 d; O* u9 K$ F- _
while [i < people]/ k# H; c9 i; n0 t) W
[; H) j# g+ U8 h. }
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ X: o9 F# \4 ^( s' K& z1 xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 x! i4 o; R* ~; A6 gset i (i + 1)
4 A! j3 c) R6 \! r* F; N" y, c7 b5 V]% T1 B" M) y/ r4 F7 j* _
let k 0( _/ Q) r0 @8 q. d! @
let new1 08 C0 s3 F: m3 t4 E
while [k < people]+ D# w6 c7 ]# O: Y
[' D$ \, B/ _; x( u0 {5 b
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)9 @+ W4 W$ \$ X
set k (k + 1)/ r7 X' |% m- d+ _- z, \+ @5 ^
]
; [# Q4 |" M$ N6 W( q, e( U  Dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & g9 I. a% N& o9 r. a8 b
set global-reputation-list (replace-item j global-reputation-list new)! {0 D9 H! Y2 O( ]
set j (j + 1)7 m% ]  ?' A: V$ }
]
+ e0 C" F3 _4 N, A3 L. xend
' b( S7 z7 Q1 ^5 Q( T( m5 O: b1 ?" j

' W0 }, Y2 ~6 w  j0 q" q: |) m* O# M# e2 W! H) u* f  q4 i
to get-color7 o& |3 Q+ z; m9 T: F6 F# `

, s6 ?. a& t  [* `set color blue

6 n/ b& G" r5 G- w" Uend
) U, l3 y$ B: Q0 \
- }9 K/ z9 l; A1 t& tto poll-class
/ a$ n0 ]' e5 ]3 L# ?" N: L* R6 Rend  z' ]5 r0 @+ U& d4 Q) W

* o* v% `; D/ t3 p( s' @to setup-plot1
( f* P+ T" @! G3 H* j+ w( F
- c6 \9 s& |, E# h$ pset-current-plot "Trends-of-Local-reputation"

2 v8 O( {- d& S! C& S3 U/ K
" O* [0 F# B8 A5 a8 Hset-plot-x-range 0 xmax
8 c9 i$ B- g( ^8 A
/ @1 z; U7 @* Z2 Y6 D- u
set-plot-y-range 0.0 ymax

) Q) L0 O8 M- N2 j' K! z* f6 q' fend
( m; ~& L& z/ a4 \" t& q3 |+ b% F, j3 ]0 r" K
to setup-plot2
  p5 a1 g% y* D! p; A6 K4 J- P2 C! B% v: _6 [  P/ j! Y5 ?
set-current-plot "Trends-of-global-reputation"
2 w) s  s3 R1 {( f7 E5 }

" X$ j+ W0 W  ~7 w% vset-plot-x-range 0 xmax
+ z2 m  R5 }5 @

! U- r( I0 a- m% u& vset-plot-y-range 0.0 ymax

6 l1 ]. K; `- ?0 h# V) b1 s" q; Pend8 n1 }* S7 l7 F( |$ J9 f/ m# V; t; E0 ]

4 [* i  R  U& O& Fto setup-plot3, z- x7 o9 y- m  w# `- T
2 {) d( g: j) z  D; ^* N9 e( f6 m
set-current-plot "Trends-of-credibility"

0 i5 G" L% V( _5 S0 j  r) x) ?5 r. A9 c
set-plot-x-range 0 xmax

2 n4 o( ?& E3 E+ z0 p' M. e) X" Y" p( ~( Q
set-plot-y-range 0.0 ymax
' K* I7 f2 ^, J+ P" B0 i
end- T2 H. R# v8 ^9 [- H. f0 V
$ U7 o. U2 i7 ^0 y+ n: B! H
to do-plots- X$ [" U0 R, ?
set-current-plot "Trends-of-Local-reputation"- T6 y5 `9 h% Y4 _6 `0 T' r
set-current-plot-pen "Honest service"
: v/ a, W4 i, ?$ v- ^9 Tend
4 F2 P: B  T& W) r7 O( Z( @3 P5 p$ J& P7 y. _+ ]: ]5 P; M4 F  ]
[ 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 M* Y4 c# ~* M
& i# t6 g- |9 r$ p
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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