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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:
4 v* ]% k; C5 f. N/ jto do-business / Z2 v1 w7 `/ S3 P5 ?1 o, Z6 p0 J
rt random 360
: R9 F2 k. h/ ?; @3 H fd 1: Z" z6 v4 Q& D7 t/ I' ~; G& ?
ifelse(other turtles-here != nobody)[! t0 Y$ c9 _9 {, m7 \8 o
   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.
/ r4 p7 m! h6 f) Q* p% |) S   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 P6 X( M( C& v+ ^4 K. ~& b
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! m. z7 M4 r; Y% K- `# l( e
   set [trade-record-one-len] of self length [trade-record-one] of self5 D' m) w- d  A
   set trade-record-current( list (timer) (random money-upper-limit))/ ^: t( @  Z( R/ c) a
/ q  q, v' J# h
问题的提示如下:
! b& \8 t0 ?( z% U# C, r+ b6 c4 |. G; i( P0 {# B
error while turtle 50 running OF in procedure DO-BUSINESS, H3 l3 `% b+ ~/ i8 J+ I* |/ n
  called by procedure GO1 d) E8 y2 b7 x1 J
OF expected input to be a turtle agentset or turtle but got NOBODY instead.) @5 |, w" J( D- ^0 S" z( ]0 O
(halted running of go); b) j( W: o, k* n: x5 a

8 J5 b: _) @$ u1 |: U7 Y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~~6 C7 R; i: g. U1 U& `$ V
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
  o8 c1 {, ^5 uglobals[
: Q6 |! i, x& v/ z% y! x3 O; ixmax- V, L  }4 n4 `$ Q9 y
ymax& k4 j/ m: N- H
global-reputation-list
/ M3 k4 o5 `% l& w% O; x2 W0 H+ F) B4 t- L, Y, B, h
;;
每一个turtle的全局声誉都存在此LIST
0 }/ v3 ^& h  z- H4 zcredibility-list
7 p6 Y1 Z: [" T( f2 q9 u/ y;;
每一个turtle的评价可信度! B2 V/ g+ X' A2 P1 b5 Z8 a
honest-service
$ P) i5 X: c& ]6 {unhonest-service( I! }, k4 o9 A% _
oscillation
6 I( w8 [) z: v: zrand-dynamic
' o/ B) p  p. j. Y3 |7 ]: g]
- C4 X0 v% m4 w) ^
7 K. p8 i8 r' D' o1 t6 e8 uturtles-own[6 i5 R7 S( V3 A* _* c2 g+ U0 |/ ^1 U
trade-record-all  {$ k/ D1 q, w
;;a list of lists,
trade-record-one组成
+ z! Y- B8 K, C" \trade-record-one! Y+ G7 N5 J. N3 K6 E* c0 D
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录: |4 V4 f4 t/ T) t3 N5 a

! z. r8 n; G% N;;[
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]]
% [3 z6 J2 x5 s" S9 n  s+ P4 xtrade-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 j. R9 |  y3 V) Z3 s6 rcredibility-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list7 v: k" P/ ^5 G( |1 X
neighbor-total- a/ Q* K- _! a
;;
记录该turtle的邻居节点的数目9 M. H; \# A8 C* A. m$ d
trade-time
8 J% m0 X3 n3 M' m. r6 R9 W' ^;;
当前发生交易的turtle的交易时间5 j& @9 |# Z4 g  A  M. e( i
appraise-give
# E' {" P4 T* ~;;
当前发生交易时给出的评价) k( f' R# q. K8 k5 J4 y  t
appraise-receive
/ P1 E9 C* k: \;;
当前发生交易时收到的评价4 A2 o3 a6 p2 R# g  e* \+ ~! x) V, y
appraise-time- }% |1 y1 J" O; }; q
;;
当前发生交易时的评价时间
, ]( A: d& K4 blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 F$ \5 L) ~" B4 _) I" ~/ C2 [7 n/ Ztrade-times-total
: h& N3 `; c. v. f# N;;
与当前turtle的交易总次数% M+ c0 A: L! u3 O0 N6 n* _
trade-money-total  [& d) X: J' A3 J" _4 }. I& A! O
;;
与当前turtle的交易总金额, |+ r, S( K' \$ T
local-reputation9 V1 e/ U& s3 m; @) G- C" I- P) j2 x
global-reputation
4 [9 O3 {6 t. J) ~4 {1 E: @4 tcredibility# M, z+ m0 n8 v) m6 p; U( {
;;
评价可信度,每次交易后都需要更新
" R* G- [$ q  ecredibility-all
! G# z/ @6 _' i% [- N; p* g;;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  L2 e% L& c4 w6 K7 h3 h
; H8 V& n, j  T6 ]9 [& }
;;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0.52 m( B3 q; \- T8 I- p% ]" Z
credibility-one
3 N8 ]! h* l, O& m;;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: S/ |$ ~& g- R: c' ^% }
global-proportion" ?/ n/ _! o9 F) a
customer' o2 T  Z% s: m& x
customer-no8 C1 O  b( p+ E  q- V$ `5 Y
trust-ok
1 k- q7 _0 q) Rtrade-record-one-len;;trade-record-one的长度% N: t; ]) W6 E0 B1 k0 P
]1 I( Z% o& _* z: L: y) f  N& s

+ p% z2 y/ B6 N+ m. i7 q4 W: h/ @;;setup procedure
5 F: Z, n0 H0 q* f" M+ {' f" d( s2 f- A2 K. J- v0 \; U
to setup' n! K7 j% t" k% X8 e" {5 ]" x5 t

! u1 }- s5 m0 I" q8 eca
1 `( x. s) S, ^1 j
* N0 F0 A) G9 x$ j: d
initialize-settings
. ~: K+ D0 j( F4 F! o- I; i, v. z
+ w5 V, }( t2 |& r3 ?( U
crt people [setup-turtles]

+ R) T1 g. J+ y, w1 m; W& ]# l* z" D1 k/ P" S) I9 I
reset-timer

4 N3 o8 P+ L8 E) ~( i+ B/ G1 G" E" X9 P- d  X7 h/ m* v0 j
poll-class
% |7 y% _2 w  X1 |$ `! t

7 u# t4 p9 u8 T4 _; {setup-plots

* H, z* X1 W0 a
0 B. E6 D  }8 w! C# Zdo-plots
8 N5 c# h! p8 @" u$ K7 u
end
2 n  ^6 v1 t9 C  Q! j% l+ s
% i, `* u+ I; gto initialize-settings7 W+ J* T; l9 ]/ _" g

  _9 d: \& |: o( O2 [* vset global-reputation-list []

$ O; m/ l9 k* S% {) N
6 h3 e) G2 O( ]; Q3 [( Y/ ]set credibility-list n-values people [0.5]
0 D* R+ p* [; g0 N. R1 [/ N

" v& J; e7 U- ]5 c& Cset honest-service 0

+ G% P5 F" q$ j4 R  p
4 ]) l7 q$ Z% _' Z4 Hset unhonest-service 0

* D, {. H" Y# _4 w; L- G8 \- S8 }* P  b' Q- w$ F1 X
set oscillation 0
( Y" s& f. a# V2 G; v
; X; ?  m5 \$ m7 e7 a4 V0 r
set rand-dynamic 0
! [' u3 z5 t; w: w  ?6 F" E4 d
end) N. P9 T( M7 Y% l5 b
# e" @6 e. X( k& {
to setup-turtles
" u; B4 j0 I8 c: m  K" Rset shape "person"+ j" o  b" S9 U, k- D, f; k1 z1 n
setxy random-xcor random-ycor
- k: _7 u. J* d: ^( }& Z+ Uset trade-record-one []
$ ^" q( E' ~+ p' i' D6 K! C
" D- ]( Q1 }+ _6 {& N5 H0 c) V
set trade-record-all n-values people [(list (? + 1) 0 0)]
3 I' D/ n8 [" i5 \3 H
2 G# r! D' Y6 g" X# }7 U
set trade-record-current []
3 d% B9 Z5 k, H, m0 {* V$ Uset credibility-receive []
# {' W, Y3 H$ T. |0 y$ h: Qset local-reputation 0.53 X9 ]# F. |( x/ a3 A8 w. S
set neighbor-total 0- g) x2 G+ E/ [7 O3 [
set trade-times-total 0! X1 X2 E# G5 C) r  d3 C
set trade-money-total 0, ^4 C4 `& P9 h4 h8 l  h: G
set customer nobody" R1 A4 ?) s" c) ?
set credibility-all n-values people [creat-credibility]4 _, q* ~% V9 H
set credibility n-values people [-1]2 \; k8 s/ I# p. z% X$ [, w9 F
get-color2 w( x) {9 Q( y# t% ^& Z  v7 g
$ O8 o' l8 ~; Z( i3 Z9 U
end) [' l9 v& D. O6 t
% K3 W( k% S# e; b) K$ x5 J2 v
to-report creat-credibility# U+ f; S' V) ]8 @6 G
report n-values people [0.5]7 f/ `4 Y# F" Y- a' g2 X8 p
end" [8 R" _  H! [: ?! K# h
; \* i" C# H; [  S' K- i& g- K9 r9 h9 G
to setup-plots" W) r0 N1 z6 a5 U" A
3 M6 |$ Y$ o+ C, w! t
set xmax 30

' ^- M2 B0 m. T: t0 U5 ~, d! N# k% k, h/ |8 w4 T2 J4 |+ y" e( Y
set ymax 1.0

" A+ P/ D0 z3 T- X
$ F! |& [  h; a) C6 R5 l& H$ yclear-all-plots

0 b' t3 S! ]/ {3 E  O" a6 l* N7 g" K( W( A1 I% T( o
setup-plot1
% L. J1 x& s) t, M
8 h+ I1 B# |& @& E2 `
setup-plot2
6 }2 h. n8 Y8 o. q
( G  z$ U" m" I, m1 |
setup-plot3
8 }" I$ D% g' C5 G& I- }
end
; l( t8 O0 l" @2 H0 V1 k
" o1 a! s1 e  Y7 q$ s0 K;;run time procedures
) g# |, y6 R# Q9 [. D7 Q% v
0 }" ^  e& f7 \  |' m+ W0 eto go
; O6 d  o% q8 a; X
, w5 G1 C9 }) C  i" |' Yask turtles [do-business]
2 O, h" q. J: b5 i7 D. O
end
) H# S. k" T( X7 C- Q0 \3 D
5 ?: W; }7 C1 |# R( Z! x% m# }# Hto do-business $ ~" ]; N) y/ R7 G- [) \7 B9 i
+ j7 [+ S' [9 m/ u8 \8 k, K

: W# {$ \4 }. Q" b9 Krt random 360
* o. N; N2 i0 W1 c& w+ S3 {! a& X& u

% S  ~/ R  u, U# a: ffd 1
# x3 G4 y: {, o* \

& D! h8 F! o* X8 ^ifelse(other turtles-here != nobody)[
4 b. O. {. Y  y5 T

5 H0 ]9 [2 c+ U) j2 a% uset customer one-of other turtles-here

+ }/ v5 M/ ]2 z5 o! s
- L% w! `3 I4 };; set [customer] of customer myself

$ Q; p( z4 ^: s& W8 m: i' S; t1 n, R" M" @6 l/ U
set [trade-record-one] of self item (([who] of customer) - 1)$ `6 ?/ e; P. e3 R( `
[trade-record-all]of self
$ ~. k+ d! B9 D+ L. I0 v* _% I;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- ]- _7 }! f) c+ o" o0 t  {
2 P! I+ W, a1 v/ m
set [trade-record-one] of customer item (([who] of self) - 1)) A( C) R4 N: t+ D- U8 A, a
[trade-record-all]of customer
  I8 X7 g8 V' h2 V7 a- R0 i

0 [; T; R8 k, _( y9 Tset [trade-record-one-len] of self length [trade-record-one] of self
6 f2 s( c0 h: j0 z! j/ s
. D/ J' Q' s8 y% j$ g8 T% F& t
set trade-record-current( list (timer) (random money-upper-limit))

  p! N$ }* \# d4 d. c" `% l1 e7 M9 }, [: m/ N
ask self [do-trust]
7 r9 g  l+ @: ^* x;;
先求ij的信任度
9 x; p  O( M% h2 t9 t3 n) {+ L+ t
if ([trust-ok] of self)# N) m' L+ d! q% Y
;;
根据ij的信任度来决定是否与j进行交易[$ I1 m! J2 \3 o* O
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 A! w5 e' }$ j8 u/ Z- Q' y9 C8 [8 O) F8 \+ K* H( k$ L
[
2 E& [2 a. d( b. {7 l! w: \
: r8 t# q* z" `+ U$ I
do-trade

  G6 E9 y7 Q# S: _6 M7 G7 p0 p; E& T; [
update-credibility-ijl

6 S6 F; A& @( n: k: z
5 V& o1 c& o7 {: X$ e# E2 X! p7 {update-credibility-list( U8 F. {7 o6 `0 h" `! e

% B  w  C  z* m0 t: O2 Y* |0 S  Z8 a  C5 P' j  c
update-global-reputation-list

) h  g' u7 r4 U0 G; w+ U1 X" o9 U0 s/ u# b) l% y
poll-class
' v1 S4 b& O. o
) i' T; J3 J8 w! o% R, }& H5 W
get-color
. i3 u8 P7 C2 }

2 q0 W+ W, P; a' {2 S/ C]]
8 q" [: v9 b2 w  |, j. B
* K: g8 |2 m: n;;
如果所得的信任度满足条件,则进行交易
* p4 B8 i7 q9 O" d1 H+ C! Z+ V  i
[
7 _4 f( D. g5 D# J

) o8 m" d5 @) R$ a0 O& ort random 360
: S& E7 Z/ {. ~! x; G9 Y
6 y" v9 Q( C9 f, x3 l9 ~
fd 1
  i5 V" r% \1 |6 ]0 G. s1 P: }1 [

! J6 A$ B, p) c; m$ |1 Z; }* A& ^2 S]

* _. u# g3 M$ G6 t* U+ s( Z, n' Y7 J7 M3 Z9 W4 L9 A
end

$ C4 x3 B& T) d/ Q* R3 R
1 x% x& c. ^- t, G- q2 xto do-trust & Q$ n1 ^. B) X2 X4 D
set trust-ok False
5 d- Q) x3 s6 O( c# P) Z5 x6 X: E: f
2 B2 e6 s6 l' o' M' a4 A
! X8 m% z$ |- _# x7 M( a9 q
let max-trade-times 0
5 K  H5 P: g  j; {foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 `$ M( n7 b9 s- P# T8 blet max-trade-money 0* c( e  Y1 F/ Y* r" v
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& `7 _4 c+ u+ z7 _% U
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% E8 g8 j6 r: Y3 m1 S% N1 q: k
0 k* f. F2 M1 O, ^. ?8 d9 X
) R* o4 i) B2 v4 ]# {* A
get-global-proportion. p8 M+ x/ t' f3 b* n7 \: s
let trust-value. l5 e' r* h/ N) u% ]2 e
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)

; q) P4 n* A7 ^  H# X* Eif(trust-value > trade-trust-value)8 x9 [, {, A6 \" P
[set trust-ok true]
0 g! y3 o6 }9 P# }8 I0 Mend
$ \( ?: J  j. V8 @8 x9 x. I( B" x0 Y: I% w8 f( }& f
to get-global-proportion" U) ]' w) G9 D6 e
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 M7 h4 Z! `" d! h# w7 m7 b[set global-proportion 0]
$ n: K  @7 P; _& h$ n[let i 0
' ]8 c0 m% G7 O1 J0 N. e8 o: S8 a* flet sum-money 0
* u& _7 |2 r5 lwhile[ i < people]
7 g3 e3 J3 i( x* t" K' D1 J[  {' ]& C' I% D
if( length (item i  {2 f: @& |* ^  u1 X, J" J9 O2 |
[trade-record-all] of customer) > 3 )

& Q  s7 g, y) o6 E1 Q[
4 f6 R/ T0 J: ^7 }+ \' Q+ z1 gset sum-money (sum-money + item 2(item i [trade-record-all] of myself))' e" ?/ a. G! H! b: v& x. T
]+ l+ t& m( ^7 ~3 P4 m. g5 \: s
]* _  b) X0 v9 ^0 ]% d
let j 0
+ q7 f; D2 W9 c; E- G6 blet note 0) k4 j# W2 h/ A/ f
while[ j < people]3 c$ j0 C0 V, |5 T
[
- M6 u; H8 m2 J$ {' vif( length (item i6 p3 _5 M4 L1 Y# y6 |# X
[trade-record-all] of customer) > 3 )
+ L4 A; z& J2 K9 h7 P+ h) X* l" \
[9 h1 T5 l: a/ L: U; Z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 t1 z& P0 Y# u- H1 |2 d[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 ?3 ?6 ~0 [( y4 C1 w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' @: `; _! @, M' D3 k
]& \: S/ \5 \8 r4 z% a( Q
]3 y& W& P/ `+ g: K0 k
set global-proportion note
  O9 h8 s; O/ D* Q1 j8 t- M]
2 l, b2 m7 Q: J3 ^) b1 n% lend
% g4 @% M) O6 _4 K% p8 `$ S9 O8 @
5 Q& \* x" w5 y8 j3 k' \# tto do-trade
4 b, T6 R* ?' A" @;;
这个过程实际上是给双方作出评价的过程
3 Z9 S1 d8 z1 I$ O! K( [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" c! I% G6 A6 F; M; |2 E& a  l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 H) R. M4 F& ^
set trade-record-current lput(timer) trade-record-current
& H" h! e" g/ {  W;;
评价时间5 L$ ?% P; E1 b8 ?
ask myself [
7 |  R6 w& z5 z, y' c, V& {5 G- N' cupdate-local-reputation: E8 _8 v# \- e8 ~+ S6 U7 r- _$ O
set trade-record-current lput([local-reputation] of myself) trade-record-current
( k/ Z! X2 I9 i; ]9 D7 e]
9 h1 [3 `+ o9 f2 ?2 ^set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' c$ D8 }  ?) q7 ~;;
将此次交易的记录加入到trade-record-one; y3 T: I2 U) k( Q& P4 Q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 ]  M1 s0 c9 Q  k
let note (item 2 trade-record-current )
) E+ i# L2 F3 I! L) h5 lset trade-record-current, O. s3 X  F2 w8 K6 n9 [8 f
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 N3 ~6 D6 L# [2 f" ?
set trade-record-current
4 \. }; Z" N% f9 T* a2 e$ |! _(replace-item 3 trade-record-current note): X! S! v( N) w$ [

( j2 K4 y( X/ {! d. N
5 _7 p9 [& `% s7 m1 G
ask customer [
% C) T" s0 s( z" ^, r( Rupdate-local-reputation" c; \" v! H, l* ^) t2 s0 Q/ f
set trade-record-current0 @5 F2 X% u  }; i! P5 w
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- a1 }- l% U. [, y7 P. e
]* d* f& A* {4 x8 L. h
9 R( h( C- D# ~
9 K  C- i) N; z, h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. w/ Q* [( F0 @* x
: R2 ?' m1 i- N( p1 G8 L. _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- j( f$ N2 u6 Z& U( |;;
将此次交易的记录加入到customertrade-record-all/ d1 S; P5 Q0 y0 l
end
) x0 Z% f$ _' j! M
; |% U& N0 m+ A4 T) @1 N( S. Uto update-local-reputation
/ `8 i9 q4 c& C7 Tset [trade-record-one-len] of myself length [trade-record-one] of myself
/ f" f: f5 q0 Y
. j% a: g3 M  l  l& h+ i/ L0 E8 m7 j/ w& F. M3 g+ Q
;;if [trade-record-one-len] of myself > 3

/ k8 j. g9 j  z& p8 [" R  B* wupdate-neighbor-total+ o$ r7 u0 ^+ g& q7 F, }
;;
更新邻居节点的数目,在此进行* |" p8 {: e7 Y, J  f8 E1 n2 l
let i 36 P$ Y" u2 f- _; w6 D
let sum-time 0$ K; G4 W0 J1 F; [5 x1 H9 k( L
while[i < [trade-record-one-len] of myself]. f  z  a. U$ Z' i2 C# N
[; |  S6 y% M5 w* |% E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& f8 Y$ A! v5 U# ]9 u6 a
set i
8 V* J9 ]8 D8 a7 z; M% r$ b% n) u( i + 1)

2 M) D* h$ A5 U' f]
+ H6 z. H0 h/ ]4 Y" n% b- Klet j 3! u! `/ ]* C7 o4 ]- W! g
let sum-money 0
$ t9 o( n1 ^/ ?" B; hwhile[j < [trade-record-one-len] of myself]# b& C& Y$ W& q! f8 z
[4 }0 L' {& |0 K! o
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)
, q# }$ j! R7 k+ d; Jset j
3 g6 p* [  n5 O8 ~( j + 1)

6 v! Q+ w' ?- e4 V* I0 p2 u]
, R& f5 K. t# r* w4 B: Tlet k 37 i  O; _  E8 o# ^' ?
let power 0
) x2 b# p( h' [' Y! S9 _  a% O9 Hlet local 0
' h: c" p8 N- R( u2 x/ S  pwhile [k <[trade-record-one-len] of myself]- D1 w) F4 z1 S9 @- z8 j8 r& i
[
% {, i/ n3 |6 {# w5 Gset 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) / z& J( ~& ]$ h! R: Z
set k (k + 1)1 H6 x7 o1 }4 J; t
]1 T1 g. w9 P* `" I; }  g
set [local-reputation] of myself (local)$ e. d! U5 x% z# X6 @
end
. E7 p' w; Y! M3 Z' t1 D& \7 U" o3 a( u1 X, e; h4 a; Q6 z
to update-neighbor-total1 l& h# Q( S; A- d

, p$ p; H. L& @: [/ hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% L, r) N: b$ l' v& x

# }( w' W6 r: W8 b' H* r- l, _

7 p, o5 u* q. \/ eend5 G- R! @; V6 W- H

; L2 W3 T+ s7 P: a+ Sto update-credibility-ijl
/ t# Q: \( u* e# h4 k
0 S8 j# k0 j5 ?. ~;;
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。
, [6 S& V7 G; l' R" Plet l 0
9 F/ M7 Q+ p: a: Ewhile[ l < people ]+ z: I! D( I: y& 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
  K" E1 W  `( A# E9 b[6 {4 `/ s* @5 A$ Z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 `# U0 _6 Y3 \6 ?2 ]
if (trade-record-one-j-l-len > 3)
3 H2 B: H" W4 d8 r; y" {7 D[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-one7 ^, y  m! g0 _
let i 3
' j& b3 n4 p( T& a9 v; Zlet sum-time 0
* D0 ^3 j/ J) B' D0 Cwhile[i < trade-record-one-len]) }- h( A$ j% ]7 `6 _% K
[6 u# c5 M: U4 u& G# z6 n
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- ?( @8 k( R5 ^5 @4 i7 }4 Aset i
) G9 M1 O& v+ d# {1 M+ u$ J( i + 1)
( }$ A( l8 z+ X
]+ u8 g8 @" f9 b2 z1 F) e
let credibility-i-j-l 0! u5 f/ W+ f6 x9 C0 N9 N
;;i
评价(jjl的评价)
- V; Q9 G' Z, z6 xlet j 3% T7 o1 l9 y' T! o
let k 4, v0 v& G% a3 v# z* `# w- h9 ^
while[j < trade-record-one-len]
, G1 ^5 w- s' Z( a$ i* H2 m[
9 w! U6 q, Y8 y% u/ u1 ]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
, A) v8 c0 O) |# ?3 _$ Y' Z4 hset 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)
7 k5 W  U, g4 Iset j; P+ M( y. c6 f; A5 J$ T! E- X
( j + 1)

& y/ a7 B0 z' X* K]; w% g; r; a% P% g/ e
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 ))/ R7 b5 i0 G5 t% s' R0 D

  `9 ~5 O; b7 c

( o, m  s% q: h/ `2 flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( b9 `0 A. ]9 u3 f8 |* H
;;
及时更新il的评价质量的评价
. J8 v, [, w5 ]1 eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ \. F  S! ?  @/ r: X, H
set l (l + 1)
9 H! w, I$ C7 T- d]
. ?) o9 |8 p+ c9 i8 [; T) Iend. l( H9 M# K* u: }% m$ l' J# }

" P) d% @; B5 S0 r$ P2 Cto update-credibility-list' z: G9 `' h  {: b  t: R) x: M5 X
let i 0
' g; w: |- f3 c) A6 R& Ywhile[i < people]
( `0 f' l/ g8 R' D; `, v[
$ i$ j3 g9 J  Alet j 0
5 L2 x* {1 T! u3 B4 ~let note 0  I/ q* x9 ?8 ?! w4 }7 K
let k 0% Y* n* i5 E3 p. }7 h# M; z& c
;;
计作出过评价的邻居节点的数目
9 }( H! p& B+ D  Nwhile[j < people]$ E7 o( z( o+ a! a% c0 J- X
[2 R' r2 o/ `" }& a/ t5 f, C; ?
if (item j( [credibility] of turtle (i + 1)) != -1)
# K1 |" V" D+ u8 K) p6 y& N  P;;
判断是否给本turtle的评价质量做出过评价的节点, C! ^& @0 y% ~- A; _3 T8 \
[set note (note + item j ([credibility]of turtle (i + 1)))
) T; B  h2 `$ b- C;;*(exp (-(people - 2)))/(people - 2))]

2 s7 S* T) q- Kset k (k + 1)* Y% E$ k4 y, j3 d) V  b' [
]
0 P9 s3 U- Y0 |5 w2 j, eset j (j + 1)
$ y0 d5 \- ~5 C$ m; ~  {/ p]5 Z8 h( Z9 s7 P0 D! U
set note (note *(exp (- (1 / k)))/ k)
$ u$ g1 x& m6 i( y' i1 m  fset credibility-list (replace-item i credibility-list note)
- f2 H  ?9 @" I1 c5 Gset i (i + 1)# S1 C/ M% j" K. i% i
]
9 E7 m/ t# e! U/ v; Bend1 v9 _2 o+ c, E; Z! G( d
% u- w$ L; x2 T5 d0 H  Q( Z5 \
to update-global-reputation-list6 d2 v% N7 ?7 Q0 d  t7 w& F. |
let j 0
7 D  w3 x) _: k  u3 D, kwhile[j < people]% M+ U! _7 X9 k) T, z2 F
[
& u4 s# o; I; I9 ]7 W3 Wlet new 0
+ |, a4 y2 k0 Q4 ^/ C;;
暂存新的一个全局声誉7 X! k$ D# i4 V- Q  w, O
let i 0- B' w5 ^2 Y& ?# v+ k
let sum-money 0
, R7 L7 _/ [! |5 ?6 t, \- Flet credibility-money 08 `+ z4 \* p& @6 K3 T5 S
while [i < people]
+ x: e8 y. r) Q- D' c[
: q5 ~: Z* o2 Q2 m& {2 cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 M! F% h) T+ l1 O/ \, E
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. K; S, n  f: `5 @# lset i (i + 1)$ X2 x: O- N! s: E& C
], {. g: ?/ c+ @0 o) C3 B) v
let k 0
9 h; ~- {. w+ x" w) ulet new1 0
- j. d, c. p- n3 T7 I+ Wwhile [k < people]4 J; |. T; e) m: ?$ m4 A, G9 l+ w
[
2 p) Q' i* e% cset 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)
! U* \0 ~! ~+ V$ e" hset k (k + 1): [/ H9 [2 W6 _; B. f; I
]
5 F4 _+ s, X# ^  I3 uset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) U3 ~% D& Y$ H  X, O/ j( D/ B7 V1 i
set global-reputation-list (replace-item j global-reputation-list new)$ }7 `9 e3 j( K* }
set j (j + 1)  r# T5 o3 J: t  [. m
]
3 l8 k3 g- @9 [1 J, j# Hend
6 k$ i% S5 v5 S* m; V  I' s+ w2 `* E3 `9 p

. W3 X5 v3 C. x  \% H) i1 K" ]
to get-color) a. m& Y7 p4 |7 T% l! |- ]  C

  _7 A3 Z+ z0 U; zset color blue

5 Q0 P# D' ?) e! |% I& ^$ P6 Pend/ ^0 Q' s3 r! ^1 Z4 N3 Q& @' V. e

- I/ ~! m7 H# A* p$ X% ?. {to poll-class
8 z' N% O0 G2 G+ T2 y/ i& S% Send
6 f& R. f7 F/ u' h* B$ O+ K' z5 x. a6 }
to setup-plot1
% m- i- i- Q4 y# Z" r, z& M4 u( I
set-current-plot "Trends-of-Local-reputation"

+ ^& K6 L2 q+ L
0 M$ I2 K8 ~9 F! jset-plot-x-range 0 xmax
3 O6 _- d6 c0 K1 s; T; C+ Z: R4 ~

* z5 C  W8 D" c: B0 eset-plot-y-range 0.0 ymax
2 @. F/ C* ^+ O; q* J% a4 b
end
& ?* i/ i& z  e$ ~" o; S, @( \0 \- k8 v% Z" n
to setup-plot2
4 A. y5 o) a5 U+ A3 f- u6 q1 c; `3 {$ G7 q
set-current-plot "Trends-of-global-reputation"

3 Y1 x3 {' d2 o# U" `+ w, z8 y" N2 }  e% F
set-plot-x-range 0 xmax
% d( i) c6 Z- F; T

) X/ A9 E: I6 P' O' q2 }; {set-plot-y-range 0.0 ymax

/ ]* S; w) x9 @end
* Q) n' F4 G9 _' D5 |8 c1 `$ P5 M6 Y% u" T
to setup-plot33 B2 ?4 T  ^0 ^/ o

" l; k# {1 X7 }2 g2 yset-current-plot "Trends-of-credibility"

4 Q% W  N3 S( X1 q: e  L6 k' J- Z; c+ ?4 N$ a
set-plot-x-range 0 xmax

+ y" N% k( |/ H
. @3 ?/ ~9 I1 j/ nset-plot-y-range 0.0 ymax

( v/ P3 [9 x4 o) G1 Uend" K8 @2 k4 ^# n& m
, H4 _- m0 P  R' l4 J
to do-plots
, N$ K0 {0 ?* |" \! Zset-current-plot "Trends-of-Local-reputation"% ^9 e' L$ K7 E3 N( T9 \3 O  e
set-current-plot-pen "Honest service"% L4 H0 H6 J+ r" D: |* Y
end2 ]/ S/ J5 I/ M! C
$ w4 B) ~) U* O! K& m( u2 S6 A. P5 {: Q
[ 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.  P  U: b, b1 d# T( \3 z
0 \  Z" x) z9 r- i' `
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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