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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:
( D: e3 w6 D$ c0 \+ U# Eto do-business ; F0 f/ g! e5 P* f2 m9 _6 }& K
rt random 360# Y7 q! L- b: e2 a& @2 d2 Q" `
fd 1
6 {' f# w: p, e9 q# f ifelse(other turtles-here != nobody)[8 I# ^7 |; d5 F3 Z  M( ?
   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.
5 f+ i7 {( Q7 J( f: A+ u. a( O" h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, D" E0 ?) b* t% f: T" k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! D$ o# ]9 Y1 S/ B* n% O2 ~8 P   set [trade-record-one-len] of self length [trade-record-one] of self
) X1 }( a& M' H  K% i2 ^   set trade-record-current( list (timer) (random money-upper-limit))- d; n# a2 L, ~5 n' s
2 z2 @  t+ c1 n3 H7 u+ D7 V4 S- v9 \- |& C
问题的提示如下:
, T" G7 H0 d" @1 {! J4 C, j9 Y
6 ?1 d) Q4 }, D/ herror while turtle 50 running OF in procedure DO-BUSINESS7 X& e' y% t& f) r  `% @
  called by procedure GO. \( t! R; d" l( L6 ?6 b. W
OF expected input to be a turtle agentset or turtle but got NOBODY instead.! Z6 I# Q. G5 x
(halted running of go)
- a' r- p4 u. ]1 R6 s/ P2 M7 d1 ~4 j. [/ b
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~~
! C5 j3 q3 _* l5 h% a  W4 w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  m6 n* y7 ?6 \; W
globals[( s4 G; m4 m9 C, }. t
xmax2 J. J# m0 ~# u
ymax
* O. E$ y( M5 @4 Zglobal-reputation-list4 X4 h* B% [7 c  m' d' d

" ~2 K% t& J( g/ E. F4 }# U;;
每一个turtle的全局声誉都存在此LIST
- ]2 X: Q  A2 {$ s3 z5 Mcredibility-list
  l9 M; _) J4 Z5 X9 O' O8 I7 _;;
每一个turtle的评价可信度7 T2 ]9 w1 l: g  h. d
honest-service% y" P) z8 d% C" f9 X' {6 x; U
unhonest-service  r0 ]) N- \! H, N2 H. w# _0 n
oscillation% s) n" b! m* E0 C# {
rand-dynamic' d  W' E  B' B: p% ?4 R+ z2 n/ G
]
, {% u2 [  r5 g% z' m* L
+ ^6 n3 \+ I* P$ E9 g$ Mturtles-own[
* o" s- @: |8 m  ~4 itrade-record-all& a8 ~2 V2 j- a1 N, ^
;;a list of lists,
trade-record-one组成! E0 N3 C# z9 T& P) B
trade-record-one$ y+ u; H( w* G5 y+ m
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 T. D8 I7 D% c9 b6 `9 [7 Z. ~& V  |, `
;;[
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]]5 q9 R1 d) g4 j" D, T
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]
% B6 O5 P8 k( Gcredibility-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& i' P7 }' X% z; ?; q
neighbor-total
! R* x$ I( `7 D3 a3 a* ^- l;;
记录该turtle的邻居节点的数目
& ~, x) ?+ I$ ?5 r, ntrade-time
, z$ n5 o8 ?3 I;;
当前发生交易的turtle的交易时间) ?7 w- q: W' |/ ?9 e4 H/ \4 `
appraise-give
5 |+ J. Q& O3 _/ t;;
当前发生交易时给出的评价+ t, r& ?7 D, N; w" d# u
appraise-receive
/ L# x* j( m" m, w, |1 |;;
当前发生交易时收到的评价
1 j. x" T7 n0 _- bappraise-time1 J5 f- V4 Q+ ]8 N- {" T
;;
当前发生交易时的评价时间- H" v9 r) N% P# Z' r
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 P: E6 [5 h- Q5 n0 ^trade-times-total) R* W* l7 s% \, O
;;
与当前turtle的交易总次数* o' |8 i# ^! j* E" z
trade-money-total1 D- W  i: \  Y2 S, h
;;
与当前turtle的交易总金额
( }: F& Z, |1 Olocal-reputation
" m  o- O# |! G, N. Jglobal-reputation
0 U8 ~, N3 M- W2 d0 \credibility& U. S# P1 e1 X$ l
;;
评价可信度,每次交易后都需要更新
8 |% A9 T/ @; \0 n4 T1 [& Z/ d7 ?credibility-all
0 w- P# b3 `- c- J: T9 a;;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
9 q6 R( q% y4 k3 s6 C* ~6 [  o4 Y% e
;;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% n+ \7 D) N! e7 C
credibility-one7 O0 D1 C2 @3 ~9 [
;;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# }4 Z9 ^( A2 o0 j- c5 O
global-proportion
7 \7 Q& N: J4 ]2 ccustomer
9 L8 U8 k) k/ k5 qcustomer-no
1 j1 [. ~8 f. O; `trust-ok$ y$ V! F2 X# {# S
trade-record-one-len;;trade-record-one的长度# ~1 x& X9 X1 A7 {+ V, h+ z
]
/ \  P1 k2 E0 W' S# l
) g" T$ a3 y; f;;setup procedure' O: G' \# X/ |0 Y, P9 i7 O
5 c' D8 u- G! U, V& Z; b* I/ A
to setup
7 Z! ?: y5 f# Z, \1 [
) }- Z  v  r4 r8 ]8 tca
9 J: t8 D+ N% e" t1 u

6 U3 i7 A4 Y$ p' t) K1 Qinitialize-settings
- Z5 z  r2 K/ Y: D1 Q* k+ ^* n

  f7 [6 K8 K! G0 S: V- Rcrt people [setup-turtles]
; l8 u# {& `$ {, P9 m

6 u2 i& I- g, i' @9 @3 L- r0 Dreset-timer
+ i" p- e* U3 g9 H! ?
( f# i% L! I3 @* G3 n8 A# |& G
poll-class
0 e/ o# A+ T/ Z. `+ g+ W1 q

5 s5 ^" u# h! x, A! Ksetup-plots
9 E, U/ w- e" c- M( c
: a+ k2 e% n+ H' g* D3 G
do-plots
1 X) j4 h9 Z' x
end
) ?4 w/ C" h/ u1 B
9 f# X5 P6 v. `$ vto initialize-settings! Q# b( d4 |- ^1 h8 M/ O5 ]! V/ L

+ ?) d- ]+ R9 E- Z# Wset global-reputation-list []

* E6 Y7 T2 e; p0 v
  |( V  k5 V  mset credibility-list n-values people [0.5]
  D& ?3 j% B. ?$ J* X

) Y; ?" u& Q0 V# R& M8 Yset honest-service 0

9 R  F4 L9 S' y4 N* g9 I4 v& ?: s# ^
set unhonest-service 0
; O5 F" k/ s1 a4 \+ N0 i
4 U, @4 z# }2 }1 o0 h# S
set oscillation 0

3 @+ s# t( L3 _
* x6 y2 J) W9 N( Gset rand-dynamic 0
4 m9 a. S0 k8 `' K
end5 Z+ S  L1 b2 K5 g

1 |2 V( q; @) l% j: ~. Z, X- Jto setup-turtles 9 C, b. O( a/ [$ Z$ Q/ d
set shape "person"  g  f# ]: l5 c
setxy random-xcor random-ycor  h- F7 W7 i  @6 v! W
set trade-record-one []
" |5 z! {5 J' _9 |+ }9 z6 ^
, S3 N8 L; ^: e8 n( @) J1 i: q% g
set trade-record-all n-values people [(list (? + 1) 0 0)] 2 I, b3 \6 n: M' Z( _  Q+ k: z, W9 n

3 x, `. @/ p3 F9 b6 p5 _: Eset trade-record-current []' n* t+ L* b5 s* u# o
set credibility-receive []
5 a( w( [6 L" [+ pset local-reputation 0.5# M  M+ y8 O" u  C; i8 a
set neighbor-total 0
, I  n1 W& @4 v- X  e& s' sset trade-times-total 0* ]$ z( A/ \' M9 U/ M# L, \
set trade-money-total 0  ], a' f  ^  d. H$ a* B: j9 [5 o/ d7 a
set customer nobody
3 i* r) b+ a2 K% Oset credibility-all n-values people [creat-credibility]
$ B# |+ G* D& k" Cset credibility n-values people [-1]7 W! Q. |& a  k& y1 t( Y
get-color
. S; P- w; b; g/ `5 m6 B4 `

2 W  j; l$ z# R- w9 Oend
2 p- j. B3 `; Z  t5 c) s! @
0 I. G7 o* N" @8 T$ c. L0 d' j; Zto-report creat-credibility
0 n! d+ A4 p* Y! A4 V  {report n-values people [0.5], O/ K6 \+ ]- U
end
, j' |  P( x( H0 }! |
* h- v* _  U. t; C/ C0 v/ Mto setup-plots3 w1 j6 N; z/ `) T, m  y* w
7 Z( c9 p- W! z. h, G0 K$ {
set xmax 30

' [& V1 q( J1 b5 i# \: V; O3 F4 u# G6 t* U7 \3 P9 ~! q+ D
set ymax 1.0
4 C" U( _- S( J* G: |4 {. X
% q) i; s$ Y+ c3 n, B, U$ i! U6 e
clear-all-plots

3 {3 ^/ D4 O* j4 `) ^; s1 T' C4 |9 H
; \7 v7 D* h9 N3 ]6 E$ @setup-plot1
: P: x! a2 `0 n# h9 o' H( E3 |
) P5 m% a" W  C: z
setup-plot2

) O& x' z7 [& O7 a- z& L6 ~) Z
setup-plot3

( f! x" i) Q) c( Dend
2 H' F2 C2 w0 x4 U) D! q- w5 P) z+ e" R  {+ h. ~% m
;;run time procedures. j8 o8 t! I' ^3 @; z( L4 C1 o! ?
" H" \" P% [5 {' c4 {6 z# a9 R0 K0 V
to go8 d  t- Y" p% T. U; {5 F, S
, m2 w+ p% @  d; ?8 s$ G5 p
ask turtles [do-business]
0 B/ A2 {% J8 q4 z6 c% A
end' l* m; ~+ m" q" ?0 w

7 i6 x8 u3 y. a* [to do-business
& t! M* y) W6 W# [! q7 X4 _

' j$ `0 ^: K& ~4 W/ K4 v4 L2 q
! r3 l# Y2 H7 i& K% M- m" Srt random 360
! C* s2 p) z- `; c- U- V
5 o  R! m4 E; |0 B
fd 1

6 R1 Q9 Z9 L; W4 u: L4 C
" a8 c8 m% ]7 c" W& ]3 j( t9 Rifelse(other turtles-here != nobody)[
* E9 z  K7 ]8 R

& r9 F# j3 s% B% F) k* z4 a* sset customer one-of other turtles-here
  F9 v2 `% E3 T" ^, w) e# X

" U0 N% i0 X- ~0 H8 D9 e;; set [customer] of customer myself

: g3 {# {2 t' J2 _( V( U# c6 k* n7 p1 n
set [trade-record-one] of self item (([who] of customer) - 1)
  f, k& C% G  J4 h% e* t; ^. h[trade-record-all]of self5 {0 {% o: }0 L9 G' M: A4 h# u+ v% ]
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 _2 S9 L+ X( c  g% A
7 g+ Q$ O3 Z6 o3 m/ U* _set [trade-record-one] of customer item (([who] of self) - 1)9 D/ |7 F8 f6 J- L: |7 K2 f* S. \
[trade-record-all]of customer

! w% u: U. W1 j" m" i  r. o/ g, i, |
' r* V2 s' c2 D6 q! c  Pset [trade-record-one-len] of self length [trade-record-one] of self
* w2 a4 X  @$ h/ P: b

" m$ l& I3 Z9 x$ ~1 Iset trade-record-current( list (timer) (random money-upper-limit))
* S3 Y9 |0 A$ b8 V* c  i6 W
9 N; F( ?' l& W, M! t" Y" h
ask self [do-trust]- H  J4 {/ z9 O& M( e) `$ _
;;
先求ij的信任度0 E; r* z8 ~/ x& u5 w
3 J: I+ D  w1 Z3 l9 K
if ([trust-ok] of self)  n; p/ m( w; A8 C5 K9 }0 ^7 \3 _
;;
根据ij的信任度来决定是否与j进行交易[
  h# M- f# ^* p, O9 _+ qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 \1 C( n6 W; t% c! C

0 M+ b1 f$ N) F9 n+ }[

9 g! S6 E3 T1 C
2 d& ^* D9 c; |+ odo-trade
7 f' R; j( r3 m, c5 Y3 k/ m

; h* T& P0 Z; P* V( L$ X/ |3 Supdate-credibility-ijl
* f( e; p2 }$ c$ \7 L3 S7 ^
7 [, c% e6 @1 n2 p. p5 q
update-credibility-list! ^& N3 G. x8 F% z; K4 i) L

) n5 O+ U5 X5 \  I( b" Y8 C* `/ T6 D/ |. p$ N
update-global-reputation-list

6 }- {/ z7 P% S& K+ j* U( ]6 o0 q4 g1 j3 b. v+ `  S
poll-class

% z! S! _  C( h2 o/ b
% J% b8 k- N& o0 iget-color

# u" X1 T. i+ N) u' t
3 E8 `  z5 V! u  R; g7 v  ]$ o]]0 s9 b" u0 Q8 s+ `& N
* T4 U- U6 s8 k* X+ j$ }
;;
如果所得的信任度满足条件,则进行交易& Q* ~; g2 U% D2 C. z8 U& Z
/ W7 c# O- B6 |, ]
[

# g. A8 }7 q) J( v2 e! _+ V# k) c, S
# t4 k/ ^# C% k3 p) X4 Trt random 360
3 u: @/ z) y' z  F) \; s( k

1 H( k2 Q0 W: R' r9 l% ufd 1

  Z. g9 o& x- I% u5 T# @7 H: `4 N* `3 I& Y/ I- ^0 ?
]
9 l, j* ], @% k2 E8 C
: V! |' |+ A& ~6 h
end
7 w$ p. z  y9 o; ~& J% M( n

7 P1 M* l& m: q  H, K; {6 Gto do-trust
  Y  w2 A* R0 K- g( Q/ Z5 |2 Kset trust-ok False* @+ T2 j* f* @( @5 h" v7 o- j

$ @. g% M% S6 F5 v( o

! i4 |/ |4 v& P$ b4 T( l( T' klet max-trade-times 0, |& h+ ^+ K: s$ r
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]  H4 w2 f9 w8 S/ q. a5 M/ z7 T  ]
let max-trade-money 04 B2 V8 d& x( Z7 @
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; w. l- O' A& M6 t8 x7 Glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- \! R* Y/ r0 [. b+ K; H: n- ?0 k  u+ q( c  Y# y2 x

7 ?# e) P) H( q# oget-global-proportion8 e* [9 S$ H8 g
let trust-value* k5 ~, |/ C3 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)
" r! e  A' B7 X4 T: l( a; Y( s
if(trust-value > trade-trust-value)$ Z& N/ m' U3 X. p( s5 k0 r
[set trust-ok true]
3 F  l; h' \% A8 B! k0 g6 U1 B% iend2 W5 }2 P( a0 y, h9 M
+ @: w! i3 m3 G' i% E- M
to get-global-proportion8 S: @$ z9 B, `
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 \1 C7 |0 V0 k
[set global-proportion 0]4 d! S& O) O; s+ \' R" z
[let i 0
6 {' z5 R* s$ E. s; d3 l1 ylet sum-money 0( \5 D- }* P2 u. a, h* I8 r
while[ i < people]4 J  r3 {, w1 q
[
! x7 p% x& \, O' f# ]if( length (item i
8 U4 t6 }6 l( m7 ^2 q- [  Z[trade-record-all] of customer) > 3 )

' M0 i  _- h* }! ^/ _% J) J[2 D* D6 ^/ G# A: s
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) V, R7 Y0 X& H/ d
]) Q+ Z2 t& Q6 N4 v
]
& R" e" h" F+ L, v- Q: \: alet j 06 s; r: f8 R# n
let note 07 M6 h" s5 y% B9 k. ~8 P! s
while[ j < people]
+ u; z6 S# _2 }[
/ s) B) |3 C2 H! Lif( length (item i
1 L7 X, P: U/ l5 |5 ][trade-record-all] of customer) > 3 )

7 A! E* I3 b6 s3 a3 x3 Z  N. U; C6 k[3 F$ u: U; i! D9 s5 V6 r- u  i/ w! _
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; c8 l4 l. h4 u/ i8 Q/ J: h[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" M' I: r# F5 z7 q8 t# U) g; x4 ?
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 m8 k7 |5 U. ?& d- l6 l6 d
]2 H* z& B+ @; f* D
]/ d1 l0 O) I' S* ?" Z7 a7 h3 D
set global-proportion note
. V2 d8 Q# C! e. K]* K9 P, s9 r# O. d
end
5 S2 b( }4 i0 Q  Z
- o( [1 m& g  Q3 Q2 Z* N" k6 Mto do-trade
% D6 h% R: ~) N, t! b- R# y$ _;;
这个过程实际上是给双方作出评价的过程5 r/ s  b2 Y& u9 {- G; ~( ]$ l/ A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 v/ X: Y( p! k: D5 H' Y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ E4 X# B* T# ^0 l
set trade-record-current lput(timer) trade-record-current" g$ n# K* t3 S: R& i" |
;;
评价时间5 H7 g3 m) v5 Q
ask myself [
$ a+ I# s8 Z2 Eupdate-local-reputation5 s+ p& v) z! W$ b; f9 S( ?
set trade-record-current lput([local-reputation] of myself) trade-record-current
) W1 |% K# S0 N* ]. F, b8 ^]: q+ Z& \' X7 o" k
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* K- e. U( K9 \1 C1 Y' P3 u) O  ^;;
将此次交易的记录加入到trade-record-one" }+ S( n; I* y8 I" L4 N0 V. w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 F7 d" @6 y6 Flet note (item 2 trade-record-current )+ e/ [3 q  T' ^9 X" ]5 w+ ?) K
set trade-record-current
2 T0 g4 z; C  C(replace-item 2 trade-record-current (item 3 trade-record-current))

/ D) \2 P+ W* X$ Y2 R7 X! J* Fset trade-record-current" B' [% D( V) ?" D5 C
(replace-item 3 trade-record-current note)0 N+ C) w4 Q- d6 w1 {) W+ p4 v+ O

8 I5 o% u% D. n5 N; W
6 d0 Y: o: _- ~2 {6 q7 e
ask customer [
8 B% U# }$ ~* K/ c2 jupdate-local-reputation
3 ^) S, ?3 s- C' rset trade-record-current  R- l2 A3 P' K+ P2 t
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- a/ n3 P) T0 Z2 @) `" v
]
9 l. x0 s0 P8 N, F+ k  e4 a8 [& d2 S$ L9 d' x
; J# a- G3 _- b! I0 A
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% M. l# m3 e& i! e6 T$ S7 ^$ k
  i" l# {" L, M0 U. W8 T
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
: S  \- t9 t6 V/ Y# z;;
将此次交易的记录加入到customertrade-record-all' _3 ~$ u8 L9 p* d. ~9 F% f
end" L  r& s, O% R( v3 \

' z$ P) k" a) H( J! C9 vto update-local-reputation( ^* L2 U& q5 R  q. n
set [trade-record-one-len] of myself length [trade-record-one] of myself
* H% j, v8 o+ ^! \8 t! ~( L: {8 K" b8 }' i, c2 R0 W
# K0 X  l% @& n1 P
;;if [trade-record-one-len] of myself > 3

& u8 L9 ~9 p: t5 Q1 p6 K+ Bupdate-neighbor-total% S' t5 |# \% E  Y8 p9 j
;;
更新邻居节点的数目,在此进行7 E0 w# d* i$ r: N0 n0 _* Y
let i 3
( }8 t' V4 C9 y, @, Hlet sum-time 0. O( T) r2 A; P& J2 _, a( e
while[i < [trade-record-one-len] of myself]$ e* ]6 ^! A, u1 f
[
& f# K, ?# R" Xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 f) J4 n! q8 Gset i. E4 x* J. b" k3 Z( h
( i + 1)
$ w% j1 D- U3 \+ T
]
; L* D5 r. o6 A# m! {6 m( ~let j 3
* V: ]8 Q* C$ \. x- e* B" F, Glet sum-money 0
& ~( x! w7 \" Lwhile[j < [trade-record-one-len] of myself]1 S' W: X# `  h( x4 i
[
0 j: \5 E" a9 |  Tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)8 R8 u* w* R% ?# \5 B3 w
set j! v) G+ G. c* I' d8 n
( j + 1)
4 t* @8 V2 S( I% E  Z0 n2 g, s
]" n& i6 l+ R/ e2 Z1 i6 u
let k 3/ m5 H. k- q+ K8 a, @
let power 0! A1 i  I$ R1 _, G, l, {* z
let local 0
5 `0 X  _& B1 y$ c5 o) O+ gwhile [k <[trade-record-one-len] of myself]- e  }% B. S( ?- m
[, H! y9 e8 G+ _0 w0 ?1 C9 m6 I
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)
# _* ^, J+ p/ O# A7 X$ O3 kset k (k + 1). R& z/ d3 x% x* D# o
]9 _" I/ y1 j0 W$ |* N
set [local-reputation] of myself (local)
/ w* `: T: [5 Z& c7 Rend7 i) }; P$ p1 }3 U! N9 S! }
7 s* p6 G, @/ g8 v; N6 \
to update-neighbor-total
& K5 k7 f- I' Q" \
& T$ X+ z. D* t& j. Cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 D$ Q/ J0 m* p3 ]3 Q% v/ {5 C& X" M; h8 @9 o" h
0 \3 w8 Z9 g8 k3 F+ a% V/ ^
end
8 q( k7 n) o+ N
$ f# [0 l4 ^. Z( [to update-credibility-ijl 9 s; e, ~* _8 \" T! u

% {  N, O: ^6 P7 F( L;;
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。
! {' d& ^: `3 y/ ^let l 0
/ h0 M4 y  L. ywhile[ l < people ]
3 }% e- R+ i$ X' Z6 \) E;;
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% J' \8 I4 ?6 ?' `7 e4 J( c& Y
[
& t; X' x; X  Mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, _8 @6 o- O# |# V/ }if (trade-record-one-j-l-len > 3)
1 d+ O, t, K" d& E[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& ^1 f+ l9 e/ s! Z* c4 Z9 z
let i 3& R% s6 {! P$ g1 W" @% w
let sum-time 0
# B8 g$ ~( U, B+ qwhile[i < trade-record-one-len]
. Q6 `* k$ P, M3 ^! T* [( @  k[
/ C/ I6 t- R, |3 P8 U. B4 i( Qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& i  q# K, n0 g: Q: q/ B6 [
set i: e8 T# X' w# d1 A" E" f" [
( i + 1)
" i3 C8 P) t, d6 G1 A1 V' d
]" l3 k" M4 H! F: \* A4 F8 x
let credibility-i-j-l 0
; B$ c% ^; ^1 _( T;;i
评价(jjl的评价)
  Z* O# [2 \; B' r7 h5 glet j 3- j- |( J6 D7 ~* ]* L
let k 4
3 Y# \" S) Z8 d* Mwhile[j < trade-record-one-len]
8 D, H+ I8 H" J/ c/ G, u& o% K[
- I3 V9 M  B9 w# D! W% Ywhile [((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8 G0 c: `; p6 j6 C
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)* K3 V/ K" o2 O1 v
set j% `8 s9 M3 z0 Y
( j + 1)
9 c, F  p2 ^3 q6 s9 A! i
]; S. W, W: N' s8 H! v$ J+ z* F& a
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 ))
- B4 b1 v7 n& E3 g% G8 `$ ~; U3 n% N! p# S& }0 A4 D+ E- v

- u$ B& J/ P( A7 m- Nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 N2 {) E; ]4 b; d
;;
及时更新il的评价质量的评价
; W6 {+ f$ H* i: {$ a1 |- xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' Y3 h+ y9 n* }& }' b3 r5 \; S- t
set l (l + 1)6 O  f  h3 [% c
]
9 g0 \! V# [$ r+ n. i+ wend
$ P1 d9 a3 p% T( ^
8 q4 R9 `/ [8 B9 kto update-credibility-list/ |& P0 a, I* |+ X2 U. {
let i 0
4 I, ?' W. J+ h- _2 E* Iwhile[i < people]4 _; o6 j3 ^. ]9 \! a
[1 I! R9 }( s9 G# Y- v. C& n
let j 0
+ p- z+ W! C8 D# l. F* @$ b( K1 Xlet note 0+ }9 F/ H# `* Q
let k 0
7 ?' @/ D$ L& r3 O# E  r5 Q' l;;
计作出过评价的邻居节点的数目' N+ M) Z& S+ w
while[j < people]
3 y+ E. m( N+ K: E3 }" ]8 i[
1 B+ Y# M1 M' j$ Z! P+ m, xif (item j( [credibility] of turtle (i + 1)) != -1)
  I2 X5 D6 J* S) K5 P;;
判断是否给本turtle的评价质量做出过评价的节点' G1 d6 s, b5 s8 |9 Z* U
[set note (note + item j ([credibility]of turtle (i + 1)))  U* V& {; u  f6 p8 u5 {+ T
;;*(exp (-(people - 2)))/(people - 2))]

$ }; k% t% g4 v' Q7 _0 Q5 Nset k (k + 1)7 K1 Z7 x' m$ B+ O; H, ~( s* p4 z
]
! p7 j+ l+ ^1 ^7 I# ^% Nset j (j + 1): P7 a) V( z7 e6 o/ X0 b" e
]
* C& n: G3 m  P" I, pset note (note *(exp (- (1 / k)))/ k)! E% [, Q- W* p' Z
set credibility-list (replace-item i credibility-list note)# D* V. K5 R* p
set i (i + 1)
7 S$ l0 x* g" t! I# J]) H& w8 r: x$ o  y) ~9 D) i
end
/ }+ @7 b! s1 L# n3 ]3 k/ w) _
: {7 E5 D/ O( h8 _# _/ Uto update-global-reputation-list, ^  m0 C4 T7 L( a8 ]+ B8 Y1 \* Q9 Y
let j 0
7 P1 K; N* p+ p* Y" P% Gwhile[j < people]/ p* h/ ?7 a* _- W
[
. |# {$ B. v3 E7 ?6 d2 f" P% E/ F2 wlet new 0
; \1 u3 O/ g& J% T;;
暂存新的一个全局声誉0 {1 y( ~1 S7 ?" r; h- F. N& o7 r
let i 0
( v7 c3 n9 e' o4 Flet sum-money 0
7 P* U8 [; O7 Y3 c. @. Rlet credibility-money 0
, x) V+ N( T" bwhile [i < people]9 m* v) B& `- `. v) A* F
[
* ^3 n& }, _) W6 _  x0 zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ [/ p+ t: R6 Q+ j  n  y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# V6 o! }7 Y% p- ?set i (i + 1)
9 O, ~, h+ H  j9 N4 v9 [$ g]
5 o0 H: i$ A' `, W' Q2 i$ @let k 0
0 C6 I; k1 a3 b( m( Z( `% J+ Ylet new1 0
/ f3 c4 \5 w7 Qwhile [k < people]
, ~8 i# l# O  G$ @" q[% A3 h7 _1 j) i$ J7 Z
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)
2 ?5 w  d0 c) ~. W! d# y2 W' L4 Q0 I. Bset k (k + 1)0 m- B  U# \4 M/ @2 e( B
]: Y4 e7 }0 ^4 f' d
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; r% g* a4 d* xset global-reputation-list (replace-item j global-reputation-list new); {/ ~- J1 x7 i1 `5 }9 }9 L2 D
set j (j + 1)
0 l3 `" g' m( I/ V]
) l5 ~) C# E6 [end- f6 v+ }5 k* a# @. \

# G5 M) k. S! t' d: A3 ~% K$ K4 S; D. U
% \  }5 F) h3 K
to get-color
/ V9 O! W* W- D& T5 e3 A) P+ N
; D8 h7 O# Y: n6 m/ sset color blue

9 J3 c, g0 n3 t9 i2 a: A) M0 eend$ P% t8 v1 o0 A
8 @8 f0 t" m  P+ ?0 l
to poll-class
" Q) F4 D" ?- ?+ s" t" uend
; b$ p3 o6 @$ L9 C- e: u2 P( y2 L1 k
to setup-plot1
) _  [2 |  F% N, W, W1 X- l6 c1 y! n# Q6 J( S- J% S
set-current-plot "Trends-of-Local-reputation"

& V& V" V; z3 H! X& i4 n% G9 `( ?
) C' N# |9 B% r/ C+ n" B( T/ A: Kset-plot-x-range 0 xmax
) p$ C/ F5 [4 a

9 P' J# H! m3 }8 s! z; E& Vset-plot-y-range 0.0 ymax

% r) F& G" c" L+ Y, y1 p- H8 Wend1 t3 m, S0 e) ?' N

: `6 d! O' t* }4 e; T) j# H' ~to setup-plot2
# |" p. H* u2 n( A9 I" w9 c5 w) w; o7 P4 a# d
set-current-plot "Trends-of-global-reputation"
# ^" S8 |6 T2 ^, z
' i9 B! i/ i" E8 g9 A- ]
set-plot-x-range 0 xmax

" m- S, L8 ~# N- ^$ H. I
$ f0 u+ J8 R, ^+ [9 B. u3 S' Q( }set-plot-y-range 0.0 ymax

! V; g; C. U1 ?. p4 R9 j4 g4 y- k* I. zend
: Z( \; L) V  f! O3 E  a. ^2 r/ C/ f1 r' o
to setup-plot3. R6 }3 x! [5 o+ g9 `, o3 |* k

& [/ D: g: F3 z5 @; O: [5 t6 Hset-current-plot "Trends-of-credibility"
" q2 V1 x2 {7 t3 S0 A. C1 A' M3 r6 c

. S8 H) J8 J0 `  fset-plot-x-range 0 xmax

* ?* G4 W3 F" x/ s( `" i: T: K) M* j5 m. n9 Q& f. B
set-plot-y-range 0.0 ymax

9 W! M1 J9 M% w. Eend- e4 P/ P5 L7 A! D! L2 P. V
6 T# W/ W* p+ }0 d* d% r" L
to do-plots1 b) _9 t5 ^4 v7 P1 g; y
set-current-plot "Trends-of-Local-reputation", ^; |4 A0 r3 g+ d0 Q0 e1 R4 o
set-current-plot-pen "Honest service"
8 H& Q3 r" A  l5 c  S2 Lend) |/ E- a$ S# Z
/ g  @# P3 `! z9 Y6 A5 k
[ 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.
& ~$ E3 D* e% k- T( E8 z7 H$ d) R
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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