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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:
* N; ]3 B: `5 Rto do-business
5 n6 ~  X( i) f+ ?/ s- f2 M rt random 360
7 ?; k* D9 I8 y  E7 P/ { fd 1
  M+ p9 V& [5 e0 R ifelse(other turtles-here != nobody)[
  z# C. [2 E- a4 V3 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./ j  J+ {$ K" e% g( b9 [8 l- e; q! O
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 s5 Y+ v8 w, f/ C! Z
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% f, j4 u) x5 y! ~! A* g   set [trade-record-one-len] of self length [trade-record-one] of self7 ?* K- l! D5 z* H, _5 ~  e2 R$ r
   set trade-record-current( list (timer) (random money-upper-limit))
8 Y" F0 ?( @% n; w  p
9 S" [/ Y3 O' J) f问题的提示如下:
4 |, @+ |& [- O4 I
* |* X  j- H9 k7 Oerror while turtle 50 running OF in procedure DO-BUSINESS6 u9 L) ]9 s3 {9 {8 q4 @
  called by procedure GO
' ?2 \! |1 N1 i2 M3 M  ?1 [& P' w* tOF expected input to be a turtle agentset or turtle but got NOBODY instead.
: h* x0 ~* D5 _; {8 G$ s+ F; L! @
(halted running of go)
1 h  f. l4 A# b/ a) @" ~0 d4 o
& G; |4 k# d) K" g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~~
3 D1 n# s# U0 ]: {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
6 D2 `) h# E$ z% L: v" sglobals[8 {! n( m! L/ I( T0 e; P+ m
xmax
, s- j! q! d' I2 Bymax; m2 O* u" L% n: s
global-reputation-list% k0 b& D6 ?, T

2 o+ O" C5 K9 b1 X' G* _;;
每一个turtle的全局声誉都存在此LIST" N/ j* h5 c1 h: K% H$ r& d
credibility-list2 J5 }6 G- t# d
;;
每一个turtle的评价可信度
0 S! A/ P. ?, v7 `! S) P( a7 \4 \honest-service
  |2 s$ \- O4 g0 ^7 e) }unhonest-service& P. Q- A$ h  R9 _4 P
oscillation2 [1 `, P! {# n$ w1 p. j% q% D7 g
rand-dynamic; t9 ?; A7 f2 v, t( c7 D2 u" @: R4 h
]+ r, i9 O, D4 L6 p1 C6 C7 k
, ^; ~, b, d4 b2 M
turtles-own[
3 x' q8 k4 L) P( I0 A( C6 Jtrade-record-all' l9 Q8 J% R1 K, n' ?9 Q$ l! x
;;a list of lists,
trade-record-one组成, V3 D' X6 F& L3 k" ?5 G& }5 k
trade-record-one0 Y, S3 E9 F' I( ]. L& P
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ I) |- d) d! \# K1 ^

2 n6 T6 A2 ]% f0 _$ w;;[
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]]
9 B  y6 S8 [) N. X6 U$ dtrade-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]6 t4 I8 C8 F8 ~  [7 x( n" d
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list2 C" g3 X9 k8 {. L4 e
neighbor-total( a/ _0 u' s) ]9 k) u+ J* ]1 @
;;
记录该turtle的邻居节点的数目
! H4 }( A% @: ^8 ~) Ytrade-time
5 a% _5 p/ [% K/ p4 _;;
当前发生交易的turtle的交易时间3 \, r6 M5 ?' X+ g3 z, D) d
appraise-give6 b0 S1 N3 r* {4 t# ]
;;
当前发生交易时给出的评价
1 \2 e" }5 |/ W! U. h! i1 Qappraise-receive7 o% M2 {+ V5 M1 D7 f; Z
;;
当前发生交易时收到的评价
& q% V, q( o( Mappraise-time
( M9 w' V$ n& X% w3 |, @- O) e0 G;;
当前发生交易时的评价时间
# M" U9 R' }4 M7 glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉& f8 r; Y, j' `0 J
trade-times-total4 X% x0 j3 w0 g0 I/ M
;;
与当前turtle的交易总次数
, e6 \5 ^0 P, T: A: c& v$ Atrade-money-total
' f. l) T! ?' e8 k( d5 b  ?;;
与当前turtle的交易总金额1 e- z/ E8 g3 \
local-reputation
7 B( o( I$ M9 p. H& \! zglobal-reputation
+ E! ?! A$ y- h1 _" K% E0 P# `credibility
  e* d1 m: {) ]2 w) \& G& f5 _;;
评价可信度,每次交易后都需要更新, j, Y& y" }( d* l: P; Q
credibility-all
1 `6 N# {# y6 Y2 I) h+ f1 \: t;;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4 A# `* O9 K+ Q8 {/ r* B
: o6 v& z- p) i6 N. j
;;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) L3 M5 x$ p6 g, P4 l
credibility-one
/ {) c' l3 t! H: q' s+ T6 _5 i;;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/ u8 w; y2 f" c2 Y% {
global-proportion
+ E. }( ?: j# J! s' i. kcustomer& e* x7 l* E% y- T5 q3 A
customer-no; J) e: q/ z# n3 }  y' |4 S+ t9 n+ i
trust-ok
. {! s' a' p& p- M1 etrade-record-one-len;;trade-record-one的长度
8 L/ `& |) v5 f1 w) @  z2 ^6 M# j9 e]
! ~0 [. L* t4 |# b
0 s& u/ o- c) o5 S$ L;;setup procedure
) \" f4 ?0 }# x
2 ]7 r) G7 o: G" W% E) bto setup
4 I6 D* M- u/ B1 l7 c
4 A- Q' [. `5 }/ L' \1 o& gca

; c0 A# `4 T$ I. R, C4 b0 q
  U1 W2 a) d8 Z  j  d5 k: W2 x2 Y3 l2 iinitialize-settings

4 b) O5 [: c1 s2 F) T
( r, o- L; `( P/ q- Y1 u. Tcrt people [setup-turtles]
+ I$ E2 F  W; T* i4 [
6 W/ d/ e5 ]7 M. Y
reset-timer
* p1 P3 f5 X3 P5 I0 v* ?4 \) p: T
! Z% m- h. o. S
poll-class
: S( g7 N& Q# b. M! i. D
) C! ^/ K" ^9 i! j6 E& b3 a% n
setup-plots
& D( W) q5 w8 U) D( N5 a) {
8 z8 Y( V9 Y3 C
do-plots
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end: }- n) N4 q5 y8 K( C

& A8 I. X2 [8 w$ }to initialize-settings) i* D# b8 \! S9 n0 A7 R

% }  n/ L% B2 v' Q3 j- m% h- Hset global-reputation-list []

  P6 w! J4 z- ~$ ]) k: k2 h  f
set credibility-list n-values people [0.5]

, U$ V" o+ Z& x6 k* v" D% D: c! @- f5 c3 n; E' |  h& z* c- k
set honest-service 0

6 i+ B0 K$ l% w  @7 s7 b
" ?6 X9 U8 R1 }0 O; Y9 Oset unhonest-service 0
, Q; H* I) Y, k6 h3 e4 `; \
+ a( z8 k. h, T
set oscillation 0
3 ?$ O1 _$ h' T7 F

# \7 {( _) \0 H  F5 Z8 Nset rand-dynamic 0
1 v/ Y# o0 i- x. A2 G/ m
end
+ T. O! {8 ^8 n& Z) f9 @- w) M5 E% d/ Z' r$ {1 p, R
to setup-turtles
7 Z' x$ h: i) f* E  d4 H! }set shape "person"
5 M* W$ @+ H  b% lsetxy random-xcor random-ycor
1 B6 k9 Y1 o* t) Fset trade-record-one []
6 Y. t1 o) R0 M5 L

4 B% u, p# ~5 s& H  F  W2 yset trade-record-all n-values people [(list (? + 1) 0 0)]
1 J$ t% }3 F9 m& U% P) M
9 p0 h+ H& w% ?  [
set trade-record-current []7 h6 R8 J2 Q# Y! j% Z2 g6 O( }
set credibility-receive []5 R! n6 x8 k+ T* s
set local-reputation 0.5$ P1 r6 E: h- t2 {& H( ?
set neighbor-total 07 ?# j" K2 P. Y. T7 E. `1 a
set trade-times-total 0
- u0 L5 B) B+ p, tset trade-money-total 0
& o0 ~/ {6 A  ~. O4 N/ o' Q3 Xset customer nobody( t3 V8 D2 [1 F) n8 O7 j- B, x* N
set credibility-all n-values people [creat-credibility]
. ~6 G! @: n% @+ ~( pset credibility n-values people [-1]# \) b/ y7 k' ?  Z& U
get-color
% }5 I# U$ H6 V1 A9 m

$ \: P$ J5 E% ?: R% h# \" ]end+ g5 B* S& o  l

2 Y( @* I# l1 j6 q" @to-report creat-credibility
8 J+ d" u- V# w; X: Areport n-values people [0.5]0 |5 H9 T& I' {) o
end
- O: u$ g. f* @% W, j( K( k/ h& b- D7 Q$ }" i, N/ h, K8 _0 O
to setup-plots! p: }2 ~( Z2 n
6 m5 z& n0 l5 E  u
set xmax 30
2 L- F0 H. `1 r

5 v& u/ c  q! {# h6 q8 Y4 Vset ymax 1.0
$ ^) I. _  D$ i, t
# d3 Y* o# {" V7 M3 C. [9 q
clear-all-plots
" P; R  d/ g+ ]. v; r

4 k) }1 K: O2 S8 B7 c$ Psetup-plot1
5 N, y$ n6 f5 s, k2 ]( ]% P

" N/ p& J5 o& b. Z& d$ D3 f4 _! |* P# X3 Hsetup-plot2
- T# e6 I2 H/ t) k
, A$ z3 o5 @& M2 B
setup-plot3

& P% n/ L! a  ~" aend
. y3 Q$ A0 x( S7 |  J. M% U9 q
- v5 e9 j! P9 y- V# S( A3 M2 F5 Z& m) s;;run time procedures0 S% a6 V: m! H9 h" k9 T
+ n: L' Z# e" b. X" Z
to go' B; b# L6 L4 ]1 `4 D! }# o$ j

. S, K. ~, n! Xask turtles [do-business]

9 {; q# P" }% l! q  J/ |end
+ A5 F' [) M. ~5 e- z/ s2 w
3 W9 w) ^  r) f, [5 N% m0 ]2 jto do-business % G7 R2 G5 m+ ?, G) `9 A" ^' E2 J5 t

4 |9 o9 H7 X5 H/ r
( @* V5 e3 ~% l; _1 S* M/ ~) Frt random 360

" {2 A8 w0 G: Z
6 d& }7 J6 b3 \1 B/ yfd 1
$ h: m2 F# _3 z% z5 i

( r8 S1 B! a7 e& p" l$ R1 ~7 m& Difelse(other turtles-here != nobody)[
" x, F* f9 b+ a" m* Q; ~9 P, @5 _7 ^
: k" ?4 m# n* n  l! ]3 Z: I* U% F
set customer one-of other turtles-here

  u. h! f! p* T  y* d  J+ C, F3 o4 E- N" A5 }! a
;; set [customer] of customer myself

; V6 U+ Q# \( y! J+ _, y
, e# k) o9 O7 d( vset [trade-record-one] of self item (([who] of customer) - 1)
% D. f6 u8 m& y6 q/ p- g[trade-record-all]of self. k2 w# Z7 {4 O# {# q( J9 f
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 Q8 Q2 g9 t9 ?( i( j
. E$ r9 C7 N( x3 N) p2 X5 k
set [trade-record-one] of customer item (([who] of self) - 1)
# r4 A& F1 B" }) K" d[trade-record-all]of customer
. O5 @7 s" ]/ J, j0 K1 ^4 ?8 S$ @2 \
( T- i* C5 a% S7 j) ~
set [trade-record-one-len] of self length [trade-record-one] of self

! w; [1 K1 j) @+ E. r2 p! H5 J
% m. B" {" Q2 R9 K* N& a' ^% S9 `set trade-record-current( list (timer) (random money-upper-limit))
7 v  G- R8 S. v9 H. D  J

2 l6 y; G/ H, t: _  l7 ^ask self [do-trust]- |+ ~0 o2 e$ v. @' Y! \
;;
先求ij的信任度3 C! g3 y0 J9 Y, M1 {5 n7 c9 u

, b/ N' I  v) Oif ([trust-ok] of self). U* y" {) w! O$ G# R) S
;;
根据ij的信任度来决定是否与j进行交易[$ c) t/ H5 Y2 R/ M* Z) O" h9 ?# X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% \1 Q* p# i2 `1 Q
; Z# C5 B2 ~5 d
[

: \2 u/ ?% y! q% L$ e3 i
# L& V; x- C% S0 Qdo-trade
0 x& D' i. `' [0 E: G1 I

. O6 l2 a% v3 r. aupdate-credibility-ijl

. ?/ ~( o* Q% E, ?0 o
9 D4 D* a! {( ]1 E& Z* t- e, iupdate-credibility-list
  S, `" h) E' d7 x
- h/ l1 e2 z. K2 V' |
* L: Q: n$ `! C) U5 J' W: K0 l4 ~
update-global-reputation-list

" ?5 Y: B5 q/ Y' a( c' l
- m  b; w5 Q4 `) Dpoll-class
: M9 T( u: D& V# u3 K) F

" @0 n- h& t0 N  B$ [get-color
0 `! C. D7 `* ^: N& y6 ^

- H; X4 x( V8 x]]( Q$ ]+ X# {& T4 S* R0 e7 }
% l& y9 j0 S9 `9 y
;;
如果所得的信任度满足条件,则进行交易& w: b% t: s7 F2 W! G' K( t! }4 _4 H
, B! `6 Z* o5 T2 P5 y/ C
[

5 \2 I5 N) r$ C8 L% n; z7 _
& e* {2 M, o5 q# J! U* frt random 360
6 t, J4 m/ P, \! s, L. }

, ~/ s2 I0 s1 o. W2 J' R5 rfd 1
6 a' o) E; S( e( T  O7 q  R' D

2 ]0 E8 ]/ k- ~2 ?, K/ x]

# ^$ `, W0 [4 E' ]! h$ b8 z) [% x
  V, b" o% u9 e( n( i; gend

6 y: N' @. D# e* ^
9 r6 A/ o4 K/ L8 q3 h$ }- Kto do-trust
, z/ ~6 g( c7 l& n$ ~! [' P; aset trust-ok False
# }( U2 D0 @# b
& w! i1 U( U+ o( \7 L
1 g9 @- ]4 M  h1 G2 x# b  D
let max-trade-times 0( E( ~2 z8 w; k+ I
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( p& D& l' K6 I, Xlet max-trade-money 0
3 v4 l* X/ v+ E8 @foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% W  D! T6 \- f7 W. L4 H% J" Flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ a# f) M0 l2 r9 G
( K3 h; _$ ~, ~: t- S2 A6 \
& o8 v# E' E: y8 a% G1 y
get-global-proportion
: R6 i. g/ a6 ~& {. w& nlet trust-value# R; P. h' @+ m/ F% K) P
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)

5 g% E6 I8 `% a/ |# Q2 wif(trust-value > trade-trust-value)% ?! r5 U* _' J# o0 m
[set trust-ok true]
! @. D: u! T. y$ E0 V% a& Lend: i; }( |! U" U- S
# I2 t& L/ o; s
to get-global-proportion
! d: \1 v. v- O2 a" M/ Qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: q; E4 b9 ]; ?[set global-proportion 0]
9 g( c% H/ x. I' m, T% z[let i 0
  O% i) q7 O) I  D; g+ ~$ y& olet sum-money 0
8 [: o8 @- ]$ l! V1 \) Mwhile[ i < people]1 Z8 @! w3 B* B8 {
[  _4 d" h0 W( Q6 O
if( length (item i
$ ]' b1 z' A- w& e# n[trade-record-all] of customer) > 3 )

3 x, X% p7 ]5 M$ k3 p  s8 D% S[$ V$ A& Q* s. p$ o8 L. j  @9 C0 |
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)): P- `' b' w9 d8 h0 c  }8 L2 A2 v1 B
]
& Q* ?9 ~: h5 @* ]% ]) t  }]
7 T  j5 W* T8 q$ blet j 00 C3 n4 C, x' W& s$ Q
let note 0! g: _4 b- r2 |1 h% c
while[ j < people]
  }9 T9 P( ^  c% n- g  S+ |% Y[
8 |6 ?4 P% B$ A( i+ ?if( length (item i3 j! ], G& |  t) j$ o4 m9 V
[trade-record-all] of customer) > 3 )

. l0 ^" q* T/ e[2 X' {( X3 F' l& N0 w6 a& a" k
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 c0 H2 F- a) G, C[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 k+ o) K/ w( o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 f, Q, T5 Q. z& e- j, J]4 k3 \& l1 N7 P0 q8 U% H) x
]- n7 t6 ]/ U8 O. {8 G# l3 p
set global-proportion note
1 e; Y- W* A0 X) E* q% f]
6 g, h9 i, f4 H' Uend
0 P, Z  c$ w# M; p  Y- `9 u- }* m; K; K, f
to do-trade' r! f0 `/ E, p  ?' @: m- S9 A* G8 u
;;
这个过程实际上是给双方作出评价的过程" w/ t) f. n7 v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; V. ~$ O! m2 ~! Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
! \1 V5 e. A$ l8 `  v! D' [set trade-record-current lput(timer) trade-record-current
$ j( s  K  {" A5 V2 j* o6 R7 y( K;;
评价时间
- K. u2 ~2 z! [/ Z: R5 zask myself [
" V9 N5 R: e# R* c. l! b: ?% _update-local-reputation2 U8 g; Z" f8 m: E! R' k. U
set trade-record-current lput([local-reputation] of myself) trade-record-current2 x9 i0 r! S3 a
]6 r, M- D" z! V6 ~6 I2 C' q. Q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ l" c1 e  Q# h: t2 F
;;
将此次交易的记录加入到trade-record-one" t% @; ~/ }+ B9 F* F+ ^' ^
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 s! E+ ]. m& P  t% ]$ y: \
let note (item 2 trade-record-current )6 O  V8 s: E5 l
set trade-record-current& t5 X9 O) E* d- v" f6 l$ b' e
(replace-item 2 trade-record-current (item 3 trade-record-current))
" N, a5 W* `4 Q, M- F# K' Q/ f* o
set trade-record-current( w1 h2 P  U" r; D
(replace-item 3 trade-record-current note)
+ a( R9 S5 K; \# Y! @, U6 a7 n9 ^3 U( d( ^6 z2 A6 ]" A
. U/ P% c8 D( O. a% G
ask customer [1 s4 \% @9 o: v2 Z; n! \  G
update-local-reputation
) R3 l& Y2 B1 r6 a2 k1 n  @# S( _/ [set trade-record-current! r3 W' O4 s' k% }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) l& X! D1 o1 c# ]- m]- }: i3 w$ l: y$ |' z, w( X6 `

1 Q3 A# o4 w2 o! n% ]' I
& f' V9 U; H% D6 d# O
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  ]1 w0 D2 v+ I) }; C8 t
' Q! n, E( Z! r" `- I1 M) B$ S5 T
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! N2 S& W0 f4 y8 ~8 w1 S1 I: z1 a- M
;;
将此次交易的记录加入到customertrade-record-all% O  r# g$ q7 [* N# W; [8 v
end+ R" J" t* [7 R+ k5 X
; J. N- p: N2 @6 a
to update-local-reputation( A& G9 C; }: _) h4 C$ D
set [trade-record-one-len] of myself length [trade-record-one] of myself
; }, Z) P7 l9 l; s* G
- M+ _. S* W+ m, t" o
7 K2 w9 |; X3 u/ t. J;;if [trade-record-one-len] of myself > 3
9 v- X; w/ \) W+ b1 Q8 t3 D
update-neighbor-total
. ?- W9 Z* o& P& G/ N;;
更新邻居节点的数目,在此进行, F# m0 Y" }/ Z' V4 F2 {' V5 r
let i 3/ F7 F8 q& O; I! `
let sum-time 0
( k; ]2 e. W, O/ Dwhile[i < [trade-record-one-len] of myself]* T+ C- {7 ~$ W. y' ~
[
! r2 v  U* {' a( sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 W9 S8 G% |7 [) b
set i
5 b5 z6 H% d" k- i' ?0 }; p7 Z: J# G( i + 1)
0 c' S9 c& _5 C" K7 _' h6 ]% V
]! K/ Y; V" y2 D( e/ Z
let j 3$ N8 Y# q6 s5 ]( S% H2 d; j- M3 v
let sum-money 0
) S4 Z$ K1 u8 e* `( v4 ?while[j < [trade-record-one-len] of myself]
4 U# C. b' P8 ?' j[0 H1 B# e/ K" H$ Z$ M' E
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)
$ l4 r1 P2 D! uset j
5 ]. x( b1 c# \) T$ m( j + 1)
. k; v$ B+ q8 d# }$ _+ G# ~& S7 _. Y
]$ `$ s; @% I+ m' J, r' R7 q& x( b, q. m
let k 3) @. N( C1 }' M; J9 l' N) s
let power 0
, l' c3 q8 V8 i! q9 Plet local 0
% s8 G9 u$ M, U* k( Bwhile [k <[trade-record-one-len] of myself]8 u: t7 O+ `4 g3 n- q! U1 l
[- H4 k6 R6 z- v0 H9 }
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) 1 o! O( M- k; u5 I4 H9 P+ d
set k (k + 1)
2 O6 G# f9 N: y. K. S* s# c]
2 M. H8 {4 J# L( `; y, \set [local-reputation] of myself (local)% U/ P# a) l3 o4 G4 X
end6 N. I; ]8 K% m4 t

/ w( _) H+ W, I0 o2 x" X" Bto update-neighbor-total
# [: A/ a8 ]1 M, X% N: c. [; Y& L9 V: x! @  Z* \+ {; w$ b
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ t/ i. v, S' T$ g% ]9 x
% U2 f% {( s2 M5 A: }3 Y, M

2 W7 m" }# J$ ~- M' y2 Eend
- M- G8 {" Q% o7 x- e4 x, K" @& J7 \. e% D0 \1 u* J* U
to update-credibility-ijl
. L0 g$ d3 h$ [( t0 F+ V" B; }/ r& d& S* M+ K' y& v. K. 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。$ C& r0 Y7 ~3 {- C* W
let l 0
) `- u! @: z% D8 Owhile[ l < people ]
2 j* M' [& e& S8 L- M8 \0 t;;
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
$ ~$ }4 Z  u3 c2 X5 u7 e[, `, B5 m7 A5 `. T3 e4 X2 i" w
let trade-record-one-j-l-len length item l ([trade-record-all] of customer). K3 v/ ]* p- V& K& A! L. _4 T
if (trade-record-one-j-l-len > 3)
8 C& e/ f4 ?8 q0 f1 n; u0 t0 {[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
- A4 X; I5 G) g4 n. Zlet i 3' U: X8 p! r+ T' z0 Z, f
let sum-time 0
3 d6 `( r( b+ d& swhile[i < trade-record-one-len]
8 m" n4 ], S- v% a[& o3 R/ ?% ~5 z; m& O* m& V0 H! r
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 N% h% n( R/ J, c: H! B4 E7 |" Kset i& p6 R2 e; I; B5 u' f( x* l$ v% Y4 ?( D
( i + 1)

4 ]# y! A8 q) m) j- ^]* {' i4 ~: k7 x: l! }" F
let credibility-i-j-l 0
& v- Y  e0 V2 N2 X;;i
评价(jjl的评价)
7 R! U6 o; U% R9 }7 R! f5 alet j 3
$ i# z9 e% B# d# J. S# ^let k 4% |0 N: y3 v% j9 G  V& e2 h
while[j < trade-record-one-len]* F8 Z9 {9 [1 [% v- a: T+ c2 [7 _; b
[
* x* O( H: k; ?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7 Y: y7 g' W* ?/ ^, z- L' ^5 p
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). {- e* o4 n6 P7 Y5 h
set j
: y: y% J; \  N( j + 1)
# I: M: d! ?6 E( [6 e  p) n
]' X8 f: k# @7 c+ x* ^; Q! ]. d
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 ))
0 d( G+ _: ~: A
0 \/ w8 D. [( T) b0 [+ V) C

: R9 \  J/ ^( xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! a8 [9 e5 C' V2 ~+ Z, }
;;
及时更新il的评价质量的评价7 V, D7 V" m4 c3 D, ~2 f# _) q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 d  q4 s3 w6 V. Q- r7 w$ o
set l (l + 1)
/ Z/ C8 p+ a, ?) s. v- q9 C" C9 s" b]+ h( x4 [3 I1 w3 v# O4 h
end. J3 O! W4 u( E8 U( W6 `* P

0 a) Z) l) q( W. |to update-credibility-list" a& V/ A8 x  |  L
let i 0* }" E; B4 T/ ~: A' E5 t' \" H
while[i < people]
! h% ~& a; [* A& J0 G, U# }7 ?[3 ]3 T& J& a" W
let j 03 ~2 T# v& j% @) y$ Q/ S
let note 0
6 T9 L1 T4 p6 c( Ylet k 00 [- l- ?" x9 Y' ~/ f+ t4 ^
;;
计作出过评价的邻居节点的数目
0 z: q2 [1 u/ D. z' M- d6 jwhile[j < people]" q+ j4 ^8 w$ ]7 c8 f/ A
[0 t. O1 p6 h: C1 X# v5 b
if (item j( [credibility] of turtle (i + 1)) != -1)
/ T4 G7 v8 ^' ~) k3 Z  d;;
判断是否给本turtle的评价质量做出过评价的节点
6 Q0 s& P. O% l2 {7 J& F( ^[set note (note + item j ([credibility]of turtle (i + 1)))& P# V' E1 i/ N
;;*(exp (-(people - 2)))/(people - 2))]

' y+ U! H# C) X0 {& N8 C, b1 kset k (k + 1)
4 b" C% U3 d7 W0 x6 ?" W6 m0 S]: g. w& o7 B' w4 m( w' T
set j (j + 1)
+ Q% }7 J$ o8 `]5 L; s- Y% W% o, {( V. v" L! r
set note (note *(exp (- (1 / k)))/ k)0 T% E  M8 F' f% R4 x( O
set credibility-list (replace-item i credibility-list note)* B; e0 o/ G" Z, h% o4 v7 C1 z
set i (i + 1); t  k8 [4 [6 r! o
]6 c; \  h2 x- h/ d! X3 F% O
end
# _  R8 q1 O( e; @9 B$ J& H1 Z" d( T  ?2 T  a
to update-global-reputation-list
3 a/ ~0 I8 I; T; ^! u8 I) Slet j 0
* M4 N! S6 W8 C0 Fwhile[j < people], h; ~) d( H& J# z
[6 a2 z$ ^% m5 L0 ]: j% |. U
let new 0" [) y8 P& g# @* d) L" A2 }1 n
;;
暂存新的一个全局声誉/ y3 B0 `3 |2 W( {" r7 A
let i 0
2 p- K( M4 i: i; i* A- G$ V( Olet sum-money 0
4 v/ G, Y/ _+ [2 y; l2 O/ l$ Rlet credibility-money 0
5 S7 p3 r) a4 A5 V0 w" l0 I* c2 [while [i < people]% u2 b0 K' F9 B
[
# p, l& Z/ F3 v/ k% m9 ~5 Wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# ~$ m/ ~, p. V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), p+ \: P2 L9 e9 o% X
set i (i + 1)
! K1 X+ L4 W; V$ z1 S+ f3 q* R]/ C0 N# J; G; @' J8 Q
let k 0
8 k2 k+ X; q) A' [7 }1 glet new1 04 ^; V' w( C$ |  X: u& ~
while [k < people]0 q+ X) [7 E- l% l' p1 q# B
[3 ]2 K9 `) ]: y$ q9 C; w; F
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)
0 p2 b5 y6 J. Kset k (k + 1)) _  ~8 y: A1 j1 m4 A6 z, l# G4 Q
]
+ o1 U  Y, A+ N0 f1 r7 [) H! Oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . B; ~- t' d: z2 }& `9 K
set global-reputation-list (replace-item j global-reputation-list new)
: n6 |$ Z+ l  mset j (j + 1)
; T" P- l1 J4 K# h]0 h2 i; H( t' X& a/ H; m7 J
end' M" F1 c/ s2 d4 r  {  @

( p3 D( T* n; M( N
3 l8 _& p( d; t6 e8 h
4 d( R9 q' J, [to get-color( \: Y: ?0 E; [8 O. e5 {3 S

- P/ b: I0 w7 Eset color blue
" I) `' ^+ j- |7 P1 l1 j
end0 }* s' w2 |3 p3 \  a9 M% c9 J

. ~( g' ~0 b: F; cto poll-class
- D$ V1 _+ E/ M( D2 `end
5 D4 L6 \2 I# O# _6 {
2 t, U! J% P/ ?( ~5 k* B4 Jto setup-plot1
$ d9 Y4 |3 q+ H3 Y
0 o* J6 j, I2 [3 }9 gset-current-plot "Trends-of-Local-reputation"

6 f. T6 E4 l/ Y- M6 t( [0 a, v# w0 t5 Z# ]; u% b
set-plot-x-range 0 xmax
3 \- q$ {2 [# G% o

: o- @4 U: A1 q* xset-plot-y-range 0.0 ymax

) `6 o# c7 s7 d" z" }end- T: Z( N. ~- g6 |# w' P
7 Z* |; I: H2 s$ t% Y! q  S+ E9 v
to setup-plot24 T  W6 P; h0 }& d" t) H) d5 q
. p4 u+ T! ?( \# t3 p
set-current-plot "Trends-of-global-reputation"

$ q) R8 d0 E2 E0 A& x. o1 P# v! j: m6 H& o, D  ?; V5 T
set-plot-x-range 0 xmax
) b- R; U4 j6 C4 _+ S

, _0 r% l+ |# Q4 L! s- Y5 ]+ a- D  wset-plot-y-range 0.0 ymax

9 [" d5 |, @: n; Q5 _7 nend
2 E" ~: f  S# m  }
$ J5 L3 J* l* J6 V- [' r* w+ Hto setup-plot3
8 j- ?) h8 O3 E* V6 [! D: R! V' ^% E  w( [4 M! B, d
set-current-plot "Trends-of-credibility"
. H* |- ?( u0 j* F  x
- k& f6 G! J- v
set-plot-x-range 0 xmax
* r) o, w' r) Q/ ?

0 S7 P  B7 ]2 M+ i: ?set-plot-y-range 0.0 ymax
2 z/ Z! z% m0 y
end, w. k0 ?. z% J- X
2 a: s( J, h1 O6 t; P3 X
to do-plots- h/ k) d% f6 m. }
set-current-plot "Trends-of-Local-reputation"& r9 h' W) H% A3 a4 O1 |
set-current-plot-pen "Honest service"
: M& b+ U' x9 G8 Lend
# s8 Q0 D% j0 l9 p- r3 Q5 s- Y+ p/ S
[ 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.
* L! N, s# P) E- y+ e6 u6 Y
$ @$ Z/ {4 ]! T. X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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