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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:! _* r% j2 @) B# J! e# B% q
to do-business + g: p9 U# R& ^) v
rt random 3606 l5 t1 h- `% I" J6 G3 n: x% S
fd 1/ O0 Y9 ^8 c5 l8 l9 |: G) {
ifelse(other turtles-here != nobody)[: S% ^+ n8 M" |3 Q5 k$ D; D& ^
   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, s  e% H2 c/ @; q. j+ x   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 ^; F  U2 B5 l   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, }( s. ^& K" Y" |5 e   set [trade-record-one-len] of self length [trade-record-one] of self
6 v& N' @& k7 s1 U5 M   set trade-record-current( list (timer) (random money-upper-limit))
5 H2 q$ i) j* L2 o! l
' g, e" y' f8 x: O问题的提示如下:: K$ Q: }$ \: X

2 ?* @; }% T; W$ }' H" cerror while turtle 50 running OF in procedure DO-BUSINESS) i; C$ n% P9 G8 K& e- u) k; p
  called by procedure GO
. V8 v! Y$ T' r' KOF expected input to be a turtle agentset or turtle but got NOBODY instead.. [# j' \" I; R" b7 u
(halted running of go)6 b+ W4 W2 S% ]! ]. R
' A7 W- T/ K' u% s$ A6 Z7 k
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~~
# E9 w3 V) R  d5 `6 e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
1 y  p) A/ I" x9 h, X" hglobals[- g4 w; r6 @3 G" `% `/ M9 f5 f
xmax
: X, {8 Y6 K# Y/ ]% d1 l5 Gymax
5 g1 m$ V. C5 a: l( C! _# Uglobal-reputation-list, D# y2 }& E8 m# |1 E/ D/ u# o

0 T$ `. l, A+ \! W% y) x. q;;
每一个turtle的全局声誉都存在此LIST) {3 K) y6 d% I: n
credibility-list
; L$ e: K+ w' f$ `' };;
每一个turtle的评价可信度
, T5 l& P- i( ?honest-service
! j1 D, O' o* Y6 O8 {4 v) f& g4 gunhonest-service5 O5 N. x) N4 h$ x
oscillation) l3 _9 V4 r6 C; i0 m7 q9 ^6 g! c
rand-dynamic
  T1 X+ T! @2 O" x0 W5 I]2 V6 E% ]$ p6 F8 ^* i
0 f2 J* z0 p: a% t) O4 b: f) F
turtles-own[
1 U& H" |7 N; t) [: K) }& otrade-record-all. d0 M4 y; g/ Z2 S% W
;;a list of lists,
trade-record-one组成; l, [% {$ n) d4 f: _
trade-record-one, Q. L3 {  s9 c$ P* t, C8 V
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 Q6 R% ]. b. d
* }- j: M4 u% d6 p! ^' l4 R* T;;[
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]]
( m+ w" |# ~6 f6 N1 t' 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]) K7 _( }( Y6 j( v' }# U. L9 ^
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
8 q: H  _4 E$ ~7 f$ Fneighbor-total8 `0 B; s+ I0 L' F* L/ o
;;
记录该turtle的邻居节点的数目# L0 e$ ~+ K6 t1 |
trade-time% x. R1 |- K" J" z
;;
当前发生交易的turtle的交易时间: B  O+ [1 y9 S" p
appraise-give, F) `$ M" X7 d8 x" \
;;
当前发生交易时给出的评价
. h2 Z" O! k9 Z1 s% |4 v: gappraise-receive$ {6 o  C9 D6 f8 K4 r5 Y
;;
当前发生交易时收到的评价( l- h, c# g8 \. i5 n
appraise-time( R1 z( \, |- O- ~3 F7 n! T9 g
;;
当前发生交易时的评价时间1 W6 m* w6 b* A* y9 p, f1 H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉& P9 U3 i6 `0 O0 Q9 f
trade-times-total
) e" t) c7 n- _1 U0 z1 ];;
与当前turtle的交易总次数
% A6 d& F- r0 Y" Z, n4 Utrade-money-total4 H% `. D# s) u; l3 {; M
;;
与当前turtle的交易总金额
- W9 f; [: G$ Rlocal-reputation
5 T$ o7 Z, c: ^  D/ k0 Iglobal-reputation6 X4 r9 ~3 }5 C) ^
credibility% h' A% F. ^9 r; t! X* L+ x% v
;;
评价可信度,每次交易后都需要更新/ i1 Q% D4 X' S! N7 C  r. ^. s7 M
credibility-all
4 n  z3 h0 B# Z! e5 d1 |;;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" {. d' v, g6 a) m

2 i6 L" d  V) V+ P8 ]9 s* f;;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
8 j% L0 Q, N  C# M/ N7 c8 Zcredibility-one
+ ^9 m/ N/ A' `  Q5 P7 k;;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( M  O  x- v& l( U8 [8 V8 G7 ~0 L
global-proportion
2 m2 a  J2 a& W: B' R* mcustomer
# y; k1 F8 k, s$ D) ~customer-no' L1 {$ m$ }  Y
trust-ok
% D& l9 x3 O" X. o$ e( |+ k% Ytrade-record-one-len;;trade-record-one的长度
( _; S; A4 q, B+ Z% Y]. j1 U) ]3 s4 C

% k5 H# a7 g% {+ J% y; q;;setup procedure
0 ^2 }; E; a* T% x  n( P& a6 `, @8 M9 D& O
to setup
2 n7 }) i& p+ r0 G
- t: a# _5 B  j8 [  r$ c2 wca
8 [% K3 q( n0 g4 d. w3 @9 A
/ s. [# D! b$ X3 r$ h7 }; [
initialize-settings
3 T  u# X8 K7 C, c

! Q6 I7 r) W4 c4 h+ G% r! gcrt people [setup-turtles]
6 x3 s) p$ p4 m  R

- U; a: t" C$ Qreset-timer
3 U3 k6 t4 x/ U1 W/ p5 }
' n$ ~" ]! _: |$ Z+ L
poll-class

  g, M8 O: }+ J* w) h, I4 a: H2 n
setup-plots
, U( E: B# J# e6 v) k# w3 M
6 o2 [+ T* n% {4 G2 ?
do-plots

* Z8 F7 U' V0 F5 pend
# v- g, T3 w8 @  b
! E+ s6 U7 X+ }, Nto initialize-settings) [3 q- F- A  |) S- ~
- F( Y0 V! ?' Z% F: ^( q
set global-reputation-list []
: \5 l( K* f& q( |3 ?
. j0 \; }. G3 N- l" M
set credibility-list n-values people [0.5]
# g$ S, x1 P# n7 c5 a

' z1 G3 @  ?5 k; uset honest-service 0
& x5 z% M" o: ]8 O% X) Q! g$ c. _
) X9 D# \4 F% G6 |* Z! t
set unhonest-service 0
8 j+ r9 e5 R% b7 Q7 E! h* W5 X7 P
* Q8 H. U7 o) T' h
set oscillation 0
, E" ?$ `3 R) Y

+ `. K! |; t6 O9 I! Fset rand-dynamic 0
* h& x! U% n* V
end
6 I1 O% L0 G7 J4 P/ t* A: Z6 W: y
to setup-turtles # d/ O9 J0 L# g3 D" t
set shape "person"
. V# |$ L0 N; x% X% C, D( e; c7 gsetxy random-xcor random-ycor, W5 I+ t! G4 @8 r! f
set trade-record-one []. n  O& b) q; M# j9 j/ V
' g& T) I7 |5 \1 ]( X) T
set trade-record-all n-values people [(list (? + 1) 0 0)]
8 y" K( Z; G# z8 l

: L: x1 N" r+ l# f2 v/ P. jset trade-record-current []' ?9 H2 M' t* Z/ `1 o5 o# _
set credibility-receive []
$ V% I: C. {) O7 h. @set local-reputation 0.5
8 q# `0 g! ^" i4 P: Kset neighbor-total 0- ~: [/ t9 W$ g4 u: y
set trade-times-total 0
9 g' o4 T4 I* g) ~/ d  Z& Iset trade-money-total 0
# A+ c* M% |4 J4 ^set customer nobody
/ [- D, F/ j* L' I8 lset credibility-all n-values people [creat-credibility]# r$ P# j8 k+ a- o1 @
set credibility n-values people [-1]6 g; D6 Q( ~; `( W- s% ~
get-color
+ P) j/ Z1 n1 _  O! D; D
0 ~  X, n4 i8 F1 o9 E) M) s+ x
end
( o! B3 {2 ~1 b( Y: P0 I- n7 S! q+ r8 Y. `9 @/ t( i: u0 a
to-report creat-credibility
$ z3 f. R& D$ P% Ereport n-values people [0.5]0 c; i5 A0 ^' D' _& h
end
! x. }8 l; v/ \! H2 G' @. h, |( k; F  K  Y/ f1 w
to setup-plots
; K3 ], V4 I* I% ]! m0 j  y9 f% |$ m& p9 f* D0 \/ M& s( G- ?
set xmax 30

# {4 Z- I* ^* S
1 p! u  A& [6 }" R1 c% F* J# Pset ymax 1.0
% a0 k$ w2 Z0 |* W/ J. ^- W

2 b1 z6 h& F/ B, @4 r, n8 sclear-all-plots

3 B8 N( l" v9 t- r% [& U2 b6 [$ L2 e6 S% F4 z/ Z
setup-plot1

% Z& e' }: ?2 V! w+ e8 S5 I, M! y2 [, m5 }8 L  e3 y+ b& Q
setup-plot2

5 S% l/ U- h( A, G2 Z) ^& m  B4 \# D4 @( e, A
setup-plot3
8 ?8 O" j- _/ B2 E4 \% x
end
1 ~+ @% U0 i+ [4 W9 f
+ U$ J2 E0 g4 E) x# \5 t  q;;run time procedures& z, d0 v) p! C. A

( G( \  W5 v0 `: vto go
- ?) X" D) l0 i, i, E# r! ~& H2 [/ g4 T3 v7 [
ask turtles [do-business]
- x% b- `8 y; M; l5 Y
end
1 z. a# y# M- V2 F) W: o
$ q1 ^- J5 D$ [( x2 cto do-business $ U; Y. V) U4 a# P

* e( O8 O0 [  X. n  y0 s/ K3 B. N" b/ q* q0 i2 l. A* D
rt random 360

- E: A. `. }/ K3 w, ^. E: U) X7 F5 S( X9 q
fd 1

( U1 c6 c+ n( Q5 P& G" g
  o) Q+ s) o/ Q. Y3 T% H1 o$ L2 Xifelse(other turtles-here != nobody)[
- C! R+ S' p$ b: X

2 d& H& k( w9 O7 ?' b" A( f+ xset customer one-of other turtles-here

2 j  p$ V0 G9 c3 F0 t% j4 y6 J" j3 M
;; set [customer] of customer myself
; z" `1 q( x2 [, G

; \4 G; p9 x$ |: n! q! c3 Gset [trade-record-one] of self item (([who] of customer) - 1)
# V1 [0 V  n, x' z* H[trade-record-all]of self
8 a) J+ |* _3 ^, N6 d8 I;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; N# Y$ S, m. S" e' x6 }, L5 V/ N
; [( ~: g: L  Z+ J
set [trade-record-one] of customer item (([who] of self) - 1)
: w3 Y, @5 K3 ?7 B[trade-record-all]of customer

# ~% M$ {; l( Q; D9 S0 B9 C; q% G6 B. j+ X9 T) x
set [trade-record-one-len] of self length [trade-record-one] of self
, b, r8 n) T3 b

- a/ Q5 _) a" H7 ]4 k/ uset trade-record-current( list (timer) (random money-upper-limit))

, \. V9 T8 e; F1 e0 I3 P: p% K5 |: s
ask self [do-trust]# L5 Z% F% T1 Y( x2 N$ E
;;
先求ij的信任度" g) K. A$ t* ^: c- }- o+ \; N
) I. j5 U* {# A$ B
if ([trust-ok] of self)
2 T: H, k9 f! I+ ?+ H; ~% g) S  K;;
根据ij的信任度来决定是否与j进行交易[
, O6 d7 c, Y$ bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 j/ r+ y/ `: N& o" A9 V* \6 {! a
5 g: v( u0 x# d+ g1 s* K2 T$ r
[
$ `! m' N0 q3 h# {1 G! G
  b0 H4 P: r5 |, N$ v
do-trade

1 T8 u1 _* q; @& R0 s  r5 x1 G+ {: U# n
update-credibility-ijl

; V! Q, o: ~, B0 r
' j" m" E: T7 a9 `update-credibility-list6 V: P3 _3 l8 H2 j! G. W5 R
* j& C% f: A3 L& i
" `2 {' l5 x4 n9 d
update-global-reputation-list

/ g1 t. X: r6 @6 l" o3 Z5 M* F* J4 y4 @' a
poll-class

2 E0 _! N4 \$ V7 ?, m
0 f) e' J$ N8 Y: Z/ K! ?get-color

0 w4 }+ g/ V! I/ X  e* C9 ]) A. x* P
8 l/ @3 h8 N- m5 g. X]]! d1 o3 H. s2 @* y6 }+ \! n

* G! }3 ?3 n$ ~2 I;;
如果所得的信任度满足条件,则进行交易
7 p6 S0 [% u( t9 h
7 S) b* c+ h6 |# `/ E4 F$ i8 V[

8 W; T! S2 W/ n+ J) k) y5 d( w6 Y3 _3 [* k& G# T5 |7 `, O& F5 C/ R7 M5 r
rt random 360

* S: {4 f2 a9 Q- W2 t& b9 a; c' e: t( R/ ?/ `- O" K
fd 1
1 \/ ?8 l% g7 K& t/ q8 }9 x
4 G0 \! R% g3 p6 j1 I" b
]

  w: [; t, i$ {' p* S4 C7 n- ?" f5 n2 l* j( ?8 D
end

. }+ r6 B* W. X4 W
& p8 `6 c9 [4 J2 W/ V$ Ito do-trust ! r# x8 a) Q0 Q* i( A. M
set trust-ok False" q4 s3 @& ^, j: T* ?9 o9 e
8 h& s* c! T9 [/ g& E) _# S
& Y# p/ S. Z6 h! D3 P" ^" p7 ~
let max-trade-times 0
, [5 R" H8 {1 {: `foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& }% u  i: B! l' a2 r/ ylet max-trade-money 0
/ R- `$ e! j7 [) a, A. Iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: l  R) K/ Y; E7 q  M: ?let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) B7 T7 {& ]7 u' T* w- Y( L) j
3 B* a' ]+ B" G- B! n4 ]
7 i; G8 x% z& l5 k0 U9 z# O: v. T
get-global-proportion% v0 d$ `/ k& L7 b
let trust-value" x. [! p, c+ V4 A6 r
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)

$ c* g  g$ [! ?/ aif(trust-value > trade-trust-value)
5 l4 T1 u& c& w/ }  ~' F2 P* b. W[set trust-ok true]4 t1 J% Z' x# L9 k& g' @; _4 F7 g6 K
end
5 P) S, c( S% g* a1 G/ T$ ^& d2 g+ V$ l8 c# w# j" h+ V
to get-global-proportion% ^/ h( P' a. ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% @0 y6 e4 O5 I  _; y
[set global-proportion 0]
4 c5 M5 R" x& s- m* K' L[let i 0+ W# Z* T# g( D9 `
let sum-money 0, Y$ u6 ?( b6 J) b
while[ i < people]8 U! m# H( [2 J) ?2 ~! @
[( e) C/ x0 M2 f, z1 I" u  y
if( length (item i
1 [7 n: o( R+ |% ?& J) F[trade-record-all] of customer) > 3 )

# k1 |8 B5 ~$ Q/ y[, @! e; D7 v2 M% I' U2 m9 Y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))( `7 q0 \. T, v: \( ]( @# g, M/ j0 |
]
! r4 N: `3 |% W- [# V% []' X$ _, q# g4 {. M6 j8 a
let j 0+ T+ n# E3 l$ g
let note 0
" c1 N0 M  i% L2 Uwhile[ j < people]2 V" `: O% ]: [  G2 i) n# ]
[
! q. n& B3 n& S; Z- wif( length (item i- ?, Q! }% t! I, X+ O
[trade-record-all] of customer) > 3 )
0 i3 q1 G1 W7 {0 V  I6 A) Z
[' o; _9 I/ t# ]& I' ]: c2 r7 z; l
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 L5 o2 @; `: i* \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. r( c3 L6 b0 ^0 h4 R( J& Y* C
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& G/ w  ~% w1 D+ B
]5 B" `8 k) h+ k
]
- ~4 `; _; B8 @3 d; _set global-proportion note
% H  w" ?6 L; N$ l2 H' W4 x0 c, N+ @]8 L% s1 H3 v/ d( P3 N1 J; J
end9 d$ R% o  ^6 s8 q
% L8 ^- D9 I, i: z# Y
to do-trade6 P1 a2 W" a" A
;;
这个过程实际上是给双方作出评价的过程
" h0 S" Q5 ]4 I& V* I7 d; ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& V: L2 X5 s5 m; B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 O; [$ G! u/ ?/ m
set trade-record-current lput(timer) trade-record-current: {5 @- h* S: t, C
;;
评价时间
1 {. p0 J- H& h& A. Sask myself [
* O5 R& D0 L5 uupdate-local-reputation
% J7 g. T9 f8 L1 E. N: ~# Bset trade-record-current lput([local-reputation] of myself) trade-record-current
$ ^' w! q! c3 \! O. o% S% r]
' [' R: K3 g) E- v; N& L5 mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! K0 P0 T1 r, A! g; t  ^8 J;;
将此次交易的记录加入到trade-record-one+ }: M! G2 {; y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 n1 v1 G6 z/ j1 K* c; y1 N, u& ?
let note (item 2 trade-record-current )! n2 m$ a/ y5 _- H" f8 E3 ?
set trade-record-current- @5 g* b0 Z1 V1 V2 R+ a
(replace-item 2 trade-record-current (item 3 trade-record-current))

& S" }% q  U# o% B6 j$ f- x( O/ t% uset trade-record-current
  F, w: }2 ~. @1 R, s9 \4 e  }(replace-item 3 trade-record-current note), t& c6 q+ |$ c% k0 [, w  L
  N3 Y7 j* j1 s  c' Z7 m; U

1 o; d6 \1 M7 {8 ^/ R& nask customer [
( W! G) z% c2 {6 Q% T0 @update-local-reputation  c  n3 `1 Z6 Z. v
set trade-record-current& H3 `; b, |5 e; @( S1 ]
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; A" T. F$ q6 W3 A1 n]
0 Z# F9 g" I3 @- K
9 d' W7 v. N, e* ^; ]7 M
9 q: P$ q( b+ x; O( _9 f
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% ?4 h+ m0 ?) o) v% p' h: [/ q7 t

+ {& C) L9 t( m, tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. U9 B" C4 N  ^! J% ?3 l9 T$ s8 {;;
将此次交易的记录加入到customertrade-record-all4 L7 Y6 V; `, R! g; Z
end% g2 {  L* M/ R) h4 ^7 N
6 c) l+ P1 G* Z0 H% f
to update-local-reputation
0 L* E, a& o- u4 E$ n% y4 fset [trade-record-one-len] of myself length [trade-record-one] of myself% a* v# k, J# S2 |/ D2 G7 ]
- i- h1 z. L- q! P: j
7 @2 r# M1 w: A0 ]- r7 [
;;if [trade-record-one-len] of myself > 3

2 u* ?% S" U! r& b, w# N: eupdate-neighbor-total
% J( E/ [1 y4 n3 o;;
更新邻居节点的数目,在此进行
2 n( N" L/ W5 wlet i 39 ^. r3 t, q6 F" \! \# z
let sum-time 0
& M& X5 G+ N' [5 Cwhile[i < [trade-record-one-len] of myself]
& k% v, K& U" n/ K4 O& `: ]3 R[
( t- m% S% c0 ~/ r9 R; @/ j) dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 A( `( E& D$ v& u0 f8 Mset i; F0 E: O" W) F
( i + 1)
+ C- @5 C+ e" d4 F7 R% K
]2 `  ^+ Y1 ]% r9 ?
let j 3
0 t: _7 x3 I4 }! B: m- Nlet sum-money 0' P- m  K! n) Y+ n- ]
while[j < [trade-record-one-len] of myself]
+ H6 F0 N1 t# h5 }( O2 ~3 T[4 G8 U' P; s% |1 M
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)
) S% ]& m7 V1 ]- ]4 m& iset j9 C( g4 `: p; B. k, Q  c* U% V+ S
( j + 1)

" S) t4 `( N5 c]
$ k5 P/ i) w; L, M  W0 k" Qlet k 3
7 h0 c4 I. @$ F+ vlet power 0
( C6 H/ K! J, D  slet local 0# y" ~* H) u4 ?. x
while [k <[trade-record-one-len] of myself]
" A6 b; D4 T. ]' c; z' y4 C  A* s1 _[$ m' ]' b8 h4 x, ]" C
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) * c& p7 @- P% }' r
set k (k + 1)
3 x2 f) _! u4 r& B( C: f2 R]
0 E& I; a: y  n% W) I$ `  `; Oset [local-reputation] of myself (local), B) l, R' o. g: s, m
end
* e9 f1 ]6 [* {% d3 Q, H+ p
( J& J/ m5 D" w) Fto update-neighbor-total
; G% D" _3 h7 j' @" K8 t% N) o- Y. N4 J( n& T
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" E/ A& s' M6 B5 Q+ F; ^: E9 @3 d

$ ?0 J, j. |9 W; b# G: n
0 l: ?5 }' W1 {4 L& _, X! o4 `
end! H4 q- O, ~; Q5 z, w0 R
: z3 M* m/ ]* t
to update-credibility-ijl
1 e+ c$ K; u9 [& v9 X+ \$ e# E
3 P- x# s/ ?% }) y0 ]' c( [* F;;
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。
- L6 @2 x- q0 F- I/ ?, c  t- Vlet l 0
/ D" R5 S: W+ @while[ l < people ]* _9 d4 F9 |. S' A
;;
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) g! `5 U" N, S3 z  X- n
[% R: O$ Z9 i# f) s' I  d- a
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* h: [, k! c& H/ mif (trade-record-one-j-l-len > 3)
/ @6 a2 q8 a) [+ ][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, F) W! V5 p( o; T( ~0 Y; e3 V0 }
let i 3
& ~3 w* r4 R. L  ~1 M' ~; {let sum-time 0$ w# r# o% z- C
while[i < trade-record-one-len]7 u1 {$ b7 V$ b  ]5 D9 k
[5 X% E0 J; c$ q& @2 Q1 N
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ N4 |. B& z( s6 Hset i
$ |  a1 ]* j: J+ A! d9 Y" i* g$ ?0 b( i + 1)

6 s9 U( a; o4 T5 d9 l]8 x) E3 o' d) v  |  \
let credibility-i-j-l 04 S! K! u: r# c/ S% [. u
;;i
评价(jjl的评价)
* p7 [' `, j- ]/ Qlet j 3( ]. V0 ~/ |2 Q) \
let k 4% J) v+ x1 L) X  M$ R
while[j < trade-record-one-len]. y5 r# v5 U# R2 G/ i6 B  t" ^$ D9 d
[
+ E' G# [( ]# ~1 c! n7 ]9 U/ ~* m1 e, awhile [((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) m9 z8 {) O/ O; _$ _
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, w2 H# m( ~# z5 `9 c) N
set j7 g" J' W% E0 y; B. C7 _9 m6 J$ a
( j + 1)
* c) r9 c3 r2 d& u
]) I$ I1 j" D6 w7 C4 i* ^% C8 ]: `1 Q
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 ))
% _' l$ G+ }) Y6 |. O' @0 ?: L; u0 D5 x& z' k/ A

4 n( Q9 _) p/ {" Nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ S4 m. N& I  ^- J: b1 b;;
及时更新il的评价质量的评价
: H. B/ l! K  t" Oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 A! Q- I0 Z* S* I
set l (l + 1)! G# M9 K8 Z# P& C0 g/ D- Y
]: ^0 L. o' e! y' \1 Z& j2 z* U
end3 g" X% e/ \1 n; y/ ?

% X* W" k: H5 d  W+ Sto update-credibility-list2 w$ c$ g5 c3 b+ [* y
let i 0% I) a3 {; ]8 G& A
while[i < people]$ E0 h# h& }" r& H, h& O! f& I9 ?
[% o/ O' P  F4 R4 d; {, M" s
let j 0
9 A# {2 b+ }; l9 J/ d$ v0 F$ y. Llet note 0; K2 W2 F* {+ @& L
let k 0% T6 B) G' ^: @( c8 q1 s- L
;;
计作出过评价的邻居节点的数目; Y/ P+ K1 `! g$ T$ a' @
while[j < people]6 p+ E: T- L& }4 G
[# [. T7 ~# Z, p6 I6 j9 D" V8 z. l, g
if (item j( [credibility] of turtle (i + 1)) != -1)6 g! c5 U, e4 n, F
;;
判断是否给本turtle的评价质量做出过评价的节点
' [6 G3 s0 y! F7 K8 K[set note (note + item j ([credibility]of turtle (i + 1)))
- u5 Z' i+ I/ T* _0 M, n;;*(exp (-(people - 2)))/(people - 2))]
9 q5 @/ p- h! W5 [  j8 T
set k (k + 1)
1 J/ B* `9 `5 ?- b]
  l  T' l7 z! s& p" \: n0 k; H+ bset j (j + 1)& }4 e' k  V8 ~# U' n
]
' n1 C& O1 M: A1 Y! `$ oset note (note *(exp (- (1 / k)))/ k)
8 y3 O* b( |" Q: o: U7 J5 G" Uset credibility-list (replace-item i credibility-list note)
9 z8 k2 X' f+ i$ n3 u7 g+ Wset i (i + 1)
7 M; F7 s$ x5 b3 k( A]
  N* o$ q& Q1 E$ @- I$ g; vend
# ]3 m& f9 I+ \5 p6 r# G2 t$ ~& }- e, o4 N/ |" q+ D; c- o
to update-global-reputation-list
! o5 w+ D3 b" H+ e7 d( \+ y8 Rlet j 0
+ S/ m& G8 S5 F* F) vwhile[j < people]
; {& g2 P5 K. h4 ?[+ ~, Y, ]% W1 b1 _; k
let new 0
( \  w- |+ V6 a+ c' g, U! Q; B, M;;
暂存新的一个全局声誉, G2 B9 a/ S0 d: s# P4 F4 r
let i 0- c# j, S. g0 p/ B  c
let sum-money 0$ @) q/ Q# t9 D) c- A
let credibility-money 0
9 L2 a/ @3 q8 }$ G- i' Y+ o5 Uwhile [i < people]
$ _' u. b0 P( l[
# O0 ~6 \% g* w- g1 i* |8 ~" uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 p$ ~) t' ]4 a6 Zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; I  \3 K( D5 f4 p# c0 Hset i (i + 1)
8 k; q4 m$ X5 R]
$ d7 `, S2 i1 Q" f5 y' |let k 0% d  r9 ~) M, e2 N
let new1 0
% J0 J4 M8 V2 r- ^0 W2 d- W  M% hwhile [k < people]  O" B  g: `' R. j
[
  p" _0 w$ K3 Z2 ^$ c& F! S& o6 Lset 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)
, Q- J3 s2 w/ E6 m* uset k (k + 1)
* Q; N  T! s4 Q  ~]
+ M4 C  C# }5 D/ K/ zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + f6 b8 h' O( H$ X
set global-reputation-list (replace-item j global-reputation-list new), c% e( j; W9 s# b8 X
set j (j + 1)1 I; ]+ t# z2 T
]' N" B. A/ g# m2 K3 f
end! |! q  [3 j' G3 r1 I- s# d

* B* c) E, b( n9 e3 G
2 A$ X3 ~' h8 e/ B9 D7 s0 R
) N) I8 Y' m0 t9 vto get-color
% m0 u4 b5 f" O
& L6 c0 e; s3 @9 Z  n  cset color blue
3 [9 F9 }1 B# ]" f+ K
end
- I. K0 i% j3 F) B7 t( m' m* u8 I6 w* Q8 f3 f
to poll-class
; H# n0 V4 q' ]% r# ~) v& L" Dend6 W3 k* k/ a2 e1 n7 G9 |

1 s0 D3 c8 |3 k5 D1 y; }' Pto setup-plot1
6 C: n$ l! N; s' Z0 I3 O" p2 [/ D, c' u& u$ ]
set-current-plot "Trends-of-Local-reputation"
2 A' v. x' S3 X0 w5 H; \" e1 K
" T7 A5 E# M6 h$ E
set-plot-x-range 0 xmax
! e: |: w8 `5 T1 A

7 {$ T+ J$ q' ]! y2 v1 V0 pset-plot-y-range 0.0 ymax

6 P6 L. S: q+ o) C- x5 A1 |& nend! K$ Q; _9 H! c3 Y

) z, i" K' x! s  F* \+ H* _to setup-plot2
! {0 `: Z' U% x; N0 u  e5 N9 h+ V2 j' [  H/ `
set-current-plot "Trends-of-global-reputation"
2 P, E& I9 [* y( c& M' O
2 A3 \6 i8 [5 @2 S
set-plot-x-range 0 xmax

5 y7 W% \: m) v% w- e& ?) o1 J. ?# X; V; Q6 [/ I
set-plot-y-range 0.0 ymax

" s3 @) Q; x/ Qend$ H5 _5 ?1 [9 h
: l' R3 T2 l3 ?, f' l! U4 i% y
to setup-plot3
! T& }  E7 {9 g1 d# u' j& U+ p0 @
set-current-plot "Trends-of-credibility"

5 p5 T  A( d: i4 S
6 g+ u7 g/ ]6 [+ }3 gset-plot-x-range 0 xmax

# D2 w( I+ e6 |6 j$ q' e$ l% G, Z
. M1 n. d5 b: O9 g( Tset-plot-y-range 0.0 ymax
  L7 T4 G: d6 N. V
end% w% Q9 r' V  R. n- M7 M

  G* ]3 B3 Q2 q* Uto do-plots0 \2 t3 o& L' ]1 ~/ W& X
set-current-plot "Trends-of-Local-reputation"8 J1 s, I. W5 b  X1 }, B4 D
set-current-plot-pen "Honest service"7 d( ^) l+ z6 N7 e& Z
end
0 S! d: C+ n+ Z/ t! N- i7 ?
6 J$ i0 {6 ?) C3 R[ 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.
8 n* c" X5 V& p/ \0 `4 U( c( i; j- X% _. p5 l
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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