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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:
  H- W3 x. m& t& tto do-business 5 u8 {% f6 @% Q3 ^7 f! ]
rt random 360' s: Q1 v& g% \# Z3 |% i6 a$ }
fd 1
+ l9 Z3 q4 B, }, g6 V ifelse(other turtles-here != nobody)[
) P6 ]9 d7 \! U8 l% |6 q   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.
/ t8 ?& l4 n5 ?9 ?( y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 L/ {$ }) E+ \9 s
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
/ R5 k& s1 @& _6 T2 Q   set [trade-record-one-len] of self length [trade-record-one] of self# Z: A1 @* v6 n3 U0 S
   set trade-record-current( list (timer) (random money-upper-limit))
* }( D/ [' @6 d# e5 c# x, Y- o. A( z
问题的提示如下:
, B/ V3 Q- f8 Y5 c4 j; B3 e1 i- A0 }0 u& A  C! ^! u
error while turtle 50 running OF in procedure DO-BUSINESS
- `- M9 c; n  y# t  called by procedure GO
: L/ p" m" a/ A: L6 o+ BOF expected input to be a turtle agentset or turtle but got NOBODY instead.5 K1 b# u8 p4 x
(halted running of go)6 U7 b' ?' I+ E

+ U& b. p1 p# d: C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~~
: R' {) a( M: q( f& m. u$ r4 N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
- e, B9 H* n& ?$ J! z9 }/ o5 i- e3 E! u, Mglobals[. E" A  p" ?8 U- Y' H# @1 ]7 Q
xmax
3 G! q% M5 \( d9 K$ ]% jymax
9 z1 G. i* ?& g5 p+ |global-reputation-list
5 t& X* R1 S1 |8 ~  l! w/ j# l) A3 E3 L, f+ [5 {
;;
每一个turtle的全局声誉都存在此LIST
4 f( x& v/ s% x1 r8 Qcredibility-list
0 E. \" g7 U4 D;;
每一个turtle的评价可信度* m- X; _2 z- T* m
honest-service
/ s2 ]* E. I; t$ k+ nunhonest-service
2 v4 F( L6 q5 S9 v/ _# x2 j. coscillation
: T  }+ I# }. A1 z) U: ^+ t+ ~rand-dynamic/ Y6 W& [% ]8 S' R
]
& b2 m4 P6 A, m2 z4 ]6 B7 {7 _' g7 k& ^* W$ \
turtles-own[
' F9 a/ ]: |* g) \# O% jtrade-record-all! A4 t$ g3 r2 D8 f
;;a list of lists,
trade-record-one组成
# ]3 e; T6 J7 g8 X* f$ Otrade-record-one
; _- c, S* j: a) a+ W;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录0 v- f2 y; B+ h' L
4 Z  {! A0 q! @1 [
;;[
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]]% A, ~% y- p% B  [5 m1 z" v0 ~8 |
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]
2 g% Z2 J7 p, W# I% |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) b- X8 A' b+ Q5 v
neighbor-total1 E- r( x' ^4 {6 d
;;
记录该turtle的邻居节点的数目
( I1 w( x+ S. w9 Ptrade-time
3 C3 _5 x2 a: I, m  T9 S. N;;
当前发生交易的turtle的交易时间+ f# K+ ~' l; o' N2 k6 f
appraise-give
& V  S: w2 p7 C; X$ `  @3 d7 E) e;;
当前发生交易时给出的评价; U8 Z& t4 O/ u
appraise-receive
+ e+ r9 [, V4 F;;
当前发生交易时收到的评价
) B6 a9 \% I: e2 Wappraise-time
* f- h7 u( q/ ^, {;;
当前发生交易时的评价时间
0 x7 V8 \; j5 G. S2 T8 H! b  m/ Ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
  A4 ^* Y- `3 i1 Z8 @trade-times-total$ H+ f! U3 t7 ]' e- p
;;
与当前turtle的交易总次数8 g8 s1 v( w1 @/ _, V0 K% l0 P# I& K
trade-money-total- o' y! P* x3 Z( }, o. T$ C1 h3 W
;;
与当前turtle的交易总金额
4 y6 L1 o6 V& c- J' g5 nlocal-reputation4 P1 `( e. e  V, |6 |( L+ C! Y4 d
global-reputation
7 Y3 s7 x4 u( Q" Ycredibility
' ]3 @3 s3 Q$ B) ~6 g: y;;
评价可信度,每次交易后都需要更新
8 B6 B* D  S8 {! gcredibility-all' a/ O$ e1 }( e+ C" n
;;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
" X: H9 n) |7 w9 B" m* q9 z
- I; o# T4 ^) e1 J/ {, Q+ V;;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
! ]( K5 f+ m+ @# _" r2 Kcredibility-one
# `$ k. v7 H% c& s;;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people8 X- I" t1 F; P3 [
global-proportion& i! I1 ?7 R0 h  T' Y9 Z* I  K
customer
# R; O1 p! M1 fcustomer-no/ F" c( ]) O$ `- N: l$ r7 N. B. _
trust-ok
" }; i) O) H: \% t2 C9 Ntrade-record-one-len;;trade-record-one的长度' V% a$ u! ~6 g: F
]9 o* Y6 I8 \! _% k

# D  w% O* d# s;;setup procedure4 F: u. U) _: Y& U  z+ ?

2 r4 N/ ^" j! B, e8 yto setup
# A9 X/ T* x4 b: G
+ m0 Q7 C; F; W$ h  Jca

* j$ A, o: ]0 J* x8 Z/ c0 l1 f
) S9 Q6 q7 I6 s2 ~7 h# hinitialize-settings

1 G! f6 v% Z8 e8 x" U( ]* `" k0 t; T  J  K; ?: X
crt people [setup-turtles]
/ Y5 Q' Q- i8 O8 @7 A
/ i0 C# b; J. B9 u- r/ I
reset-timer
; c8 k  X  _4 a! O6 j# o
+ N8 V( D* [1 v3 c. q
poll-class
+ a/ y/ j9 P: L/ @* t
; d- ?* {) ?( ~1 L& M/ \
setup-plots
# G7 c# z! V+ y8 Q6 S$ |

' I5 g9 s) h/ Ado-plots
" N; z+ M. ^5 x4 d! s
end
( I; p9 Y" x& a; c1 z
1 N4 O$ Y6 P! l' r, xto initialize-settings
  n& \" h+ x" C, k+ C5 x
$ }  U( G4 _/ fset global-reputation-list []

: k+ i) o: u: ~+ d: I+ S
5 z/ P. O- O4 I5 Q9 ?/ a8 Mset credibility-list n-values people [0.5]

7 N; T/ W: ~; h1 e
; f, b, L1 H' y3 q% g: v. j8 Wset honest-service 0

0 R, m9 f. x6 g6 \, M7 o; O+ B" B# X  v+ G! ?
set unhonest-service 0
/ E) r+ V; L0 _4 Y

1 v( @4 W0 Z7 M- d0 {5 }set oscillation 0

: t; P& l( F- U( x6 `- U! T8 r7 G, Q
0 q) ~- {2 X3 u2 a2 z  i) Y0 }set rand-dynamic 0
8 m/ `$ M3 Q: w$ k
end' ^3 S/ J2 H, J& N$ b2 D

8 {4 e  J) k- ?+ U0 x; [5 uto setup-turtles
" m4 t$ y, `4 e+ d% G8 Oset shape "person"
5 U1 S2 l& `# B! wsetxy random-xcor random-ycor
3 }/ e9 n' d- m2 sset trade-record-one []2 A- T) V' `& O4 s1 ?

  i3 J8 N& o6 X% A" O" z( Qset trade-record-all n-values people [(list (? + 1) 0 0)]
# A" g) `2 ~" H

0 m6 B) m  i/ Y) S# T4 P: xset trade-record-current [], `$ G4 l6 g) `8 i! N8 O6 ^
set credibility-receive []8 G/ {) r, c+ J  Y) M# w% Q1 K
set local-reputation 0.5
. w5 Q2 z1 f. nset neighbor-total 01 ~4 W- n& @1 f* s* W
set trade-times-total 00 r' u5 x2 h9 I+ v. d
set trade-money-total 0
* B5 Z  \" P9 G+ U  y! Bset customer nobody' {0 Z' `; E3 _! S
set credibility-all n-values people [creat-credibility]
5 v" G/ m) t  ^4 M( eset credibility n-values people [-1]
! A5 c/ e3 ?# ]get-color
4 r7 W! q7 t. z' g9 R. O1 F) m

2 i  @* O) V3 ^* p( o7 lend4 G. [" W: I; W% ]" Y8 e
9 m2 x4 _1 ~* ?0 L( q
to-report creat-credibility
' a# p. ?" K' K2 Hreport n-values people [0.5]. k  h) `5 N# g0 O1 ]( k$ T' P$ k
end/ ]8 {! a1 a" H& v3 B) t5 g: [
% d9 c) ]7 V+ @9 c4 i+ R$ ^, F
to setup-plots" Q; F% R( d- u( G$ G

5 K+ C& }7 T, \4 V. ]set xmax 30

% Z( D" \( p* ~) b1 c: x6 ^1 X
  a& ^* `8 D. C9 k* R) O) Zset ymax 1.0
/ C5 a8 Q3 @% j& J" n- a
) {$ P. Y! T3 N  `
clear-all-plots

  W8 K3 M" E1 Y- R  z0 X3 u" u
setup-plot1

  e5 m' a" |: d4 K
" D$ H3 g% H7 D8 a7 f6 [- V, T" Zsetup-plot2

5 D- M, s5 A7 e% @5 K1 w. E. R/ C6 Z4 P1 [0 s
setup-plot3

0 @! u# O3 h% z9 w6 b, H# S+ wend4 J/ b4 D& t! j; u2 R0 j
1 {! e3 ~3 q2 H8 l: ~# `& i
;;run time procedures
- U5 A  Q/ y2 H; I# T7 T# I" L6 U6 i3 G
to go+ F' k  U- }4 L" X
3 N- s( n! H. V6 j( G! e# V
ask turtles [do-business]
7 e+ z& f, u  _& ^+ T# v
end
: }7 `  C5 B1 b/ Q
. A0 y# \* x; y! V- {+ Vto do-business
4 `# k4 k  P; S
- `  S$ B- p) v: m% l. T' F
; }9 m5 T. J1 |: ?
rt random 360
) T; @( Y5 m+ p4 P* ]  R6 b

) G* |1 V8 ^# |+ hfd 1
, B/ a$ F! T+ M6 i4 d+ i& x

" Z7 G$ O; _. r- @& h3 |' M) e4 j* uifelse(other turtles-here != nobody)[
9 A& p. ~9 \2 C! {  U
9 z3 v5 o' c! ~
set customer one-of other turtles-here

5 c. r' V3 [: B8 U) u5 O
( k2 e8 C! b: L1 x* _;; set [customer] of customer myself

9 s5 R! V8 D4 Q1 w6 e
) @3 D3 V1 f2 a0 sset [trade-record-one] of self item (([who] of customer) - 1): v0 v/ ]) E+ O: D5 I
[trade-record-all]of self  x4 C! f  T: {  X3 d
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& S$ A7 V6 p$ H) T

1 R8 E) r- v! [% U( Sset [trade-record-one] of customer item (([who] of self) - 1)" g$ L, }5 {/ h, w) p$ _$ a
[trade-record-all]of customer
6 ~0 E8 |6 ~: m$ ~4 t' @* F
; g, e) ~: ^  b2 M# A$ c0 S
set [trade-record-one-len] of self length [trade-record-one] of self
7 Q/ j. ~& n$ K! q  g! b0 c
, g+ a6 n8 ~' L
set trade-record-current( list (timer) (random money-upper-limit))
! i  O  b4 B3 b& ~* K0 f/ V

8 ?" L8 \: K% P( \8 {+ y# Uask self [do-trust]
. q0 n) W; T2 X3 W% g;;
先求ij的信任度: b+ M; O, u+ l  c: f1 S/ \; y: u: I

+ W  `3 n) K" Q+ q& h% Rif ([trust-ok] of self)- r$ {* n3 e) g0 t
;;
根据ij的信任度来决定是否与j进行交易[
3 f# B8 l! X. u9 h; Xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ ?5 m. y1 l; f7 _+ b7 b1 \; x1 F0 ]' ^
[
; Z' k5 t( V/ |0 B# f  U, \. _
- n5 s2 n: _8 o: K, p! E9 |
do-trade
3 N! Y/ X1 q1 g! O: I* N, Q1 z

  N" ?/ ^9 N! r* U2 k" E9 M' \' Dupdate-credibility-ijl

3 e) b+ @) t' x6 A  k
  G; {8 d! ?7 H: j6 `! s! fupdate-credibility-list$ g) }% L) E8 p: j+ ]0 H& @, u
0 E2 H( _8 [- W. _: v

2 Z% T; J# U8 v# X3 l; f( N3 L4 t1 Supdate-global-reputation-list

1 I0 N' g% V0 g: [5 ^3 B; z  {+ P% `2 ^* D
poll-class
, Z. ]" L. M1 Q; f

; |9 m6 T, `; U- t( L& m( yget-color
- R3 k4 y1 K$ V1 n2 v: x  S& A+ |5 m
0 S2 V5 S" Z, Z3 O0 |; J# m; g
]]( ^" z& E. O, i7 d% W) r' ^

9 y4 G0 m9 c/ w- F$ \& Z;;
如果所得的信任度满足条件,则进行交易
3 M# |, r* q! y8 U* |0 @1 n5 d; D& z  w
[

6 K/ h3 R& D% y2 \3 I- U$ @1 z. P6 M
. g" a7 z' R+ s5 p, D+ ]; P/ x/ x$ Nrt random 360

/ c8 b- Y, X( g0 z& d1 ~
% Y) u! c$ f8 q) g" ~* x( xfd 1
3 n4 L0 g! j4 @+ h& p7 E
5 s+ C# F$ v& C4 O0 x
]
+ t) T" ~; W# {" Y  _' d
0 F; ^( d! W/ W7 F3 o
end
7 s" u; d/ m3 @7 v5 E% O

5 H8 L/ L; J9 A4 Pto do-trust 2 r) w1 |+ @$ t2 M
set trust-ok False
1 @6 l' q6 r- x" R" p- Y- w
+ g0 H& z" ^3 d
9 ~0 L/ o2 m1 y" z6 m
let max-trade-times 01 p: l# [3 E; Z' V0 ?, M- E$ ^
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* C2 D8 N; R1 t; ?2 a" Y& k  I
let max-trade-money 0
0 N2 ?/ b7 ]. [: v  W, c1 {foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, ?% [% v' K; _- vlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 ~4 W: X- w0 g6 n0 A

7 X( S3 \- o! a' @1 R, |

+ ?) k6 K# ]  Z4 f5 W" z: ?" Tget-global-proportion4 W; n% X7 |, }6 n6 N
let trust-value
2 B. K$ D) r1 n, X  l* K- Elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
. s% h9 {; k( \; o- S! M9 p
if(trust-value > trade-trust-value)
) o3 e" m8 P( l) M* @; q' U! B6 p[set trust-ok true]
& Q' k' |% R' E. Qend
, L/ G1 ]0 `4 c5 i+ m8 }
1 p( S/ {3 j4 @% a: h: Q5 u7 `! Nto get-global-proportion
. i) K: o3 E$ ?" b" A3 bifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 L! h6 Z0 {9 W5 ~9 G( Z: h[set global-proportion 0]
$ r. e' J7 P' t3 c3 W[let i 0: Z  ]) R8 X5 X! O
let sum-money 02 C1 u, P6 j  t
while[ i < people]! g7 s4 h. V9 D
[5 I8 W: ^1 A! Y9 O2 F% J7 y2 _$ H
if( length (item i* m! C4 P7 l. H9 |. T5 a) X
[trade-record-all] of customer) > 3 )
, U: x( J; H$ G, s+ M1 {8 ~
[
( m5 z" _1 e) B- m) Hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% @& u3 R. E. F+ u: b]
6 W9 ^: b0 x) k! s( E+ r4 H]
% K- {; D0 U$ Zlet j 0
, j* b6 Y* k/ a0 T* |( dlet note 0: Z! b' U' O6 F/ V* y
while[ j < people]
. p; F4 I- f- r[
2 d/ O( e! q' q, i0 \9 ?if( length (item i4 T  a! G4 [3 A) N0 Q( c9 N" W" T
[trade-record-all] of customer) > 3 )

+ h/ h; l4 D7 `1 g; e3 {4 j[6 z+ M! ^  @- D  X
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 R4 P' Q! y! H' Z: G[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 Z" v1 t. G; j, ][set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 n6 O1 \4 Q9 l! M+ {]$ ~( g" ?- M! o
]6 x) {4 O. B" ~( l
set global-proportion note
% w8 P. X) F+ ?]1 a! i; g, u! }2 b
end
  L. @$ e- `5 g) ]$ n. z' x9 L- k7 U) m: Y% Q& u
to do-trade9 M; I3 b8 A7 _3 C; Y5 \
;;
这个过程实际上是给双方作出评价的过程
, ~. o* k2 V4 _* S- D( @5 Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 W) M* w0 Z/ v% B" R7 B* Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% @# ~. E8 c+ l' b& T* q' R( Y; |
set trade-record-current lput(timer) trade-record-current/ g& Y6 k: J7 }4 {( {
;;
评价时间2 P$ M5 g3 D; h* M
ask myself [! Z( R6 [- Q2 {; k% I8 n
update-local-reputation2 H4 X$ K( `* _: H0 f6 w# D- V
set trade-record-current lput([local-reputation] of myself) trade-record-current) u% V# j# V% S% Z
]& e2 f$ v; `- O7 w  R& `% H$ Z% o
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 J: i: Q: R" \7 F5 L2 t;;
将此次交易的记录加入到trade-record-one- U2 _$ u$ l2 ]6 F' \1 m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); S. x* ~. w; M8 @& |
let note (item 2 trade-record-current )
) ?9 r3 B9 |3 T0 h& x. p; p, Hset trade-record-current
2 r. C8 l( ^' B/ e4 Z) w" h(replace-item 2 trade-record-current (item 3 trade-record-current))

; `$ U" E8 K& Y  ?set trade-record-current; W2 c) G$ x& S% e2 a' O5 I
(replace-item 3 trade-record-current note)
8 d. c* k9 h% f, x$ x! d
& @2 M1 ~* {0 \; p4 O! h: g4 O

1 m6 {$ H' Y8 S4 G% ?ask customer [
* B! U8 F& Q( T  G. [update-local-reputation
% b/ ?8 O8 \3 R# O0 O, O) jset trade-record-current$ J* R+ W$ K' @( \' i
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. d8 `4 y  G$ s% G. {4 a: c
]
4 ~, L# e/ u& u
, r/ g" B. S5 K4 `( F; \4 v  V' p
% f3 f3 K  ]9 ]* F1 Z5 O
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 x, B6 s) g+ w% i& _. W
8 |4 g- f. @' _* _' Z  R; X0 C9 Y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& n" o8 l+ p; h5 F! d1 X" H;;
将此次交易的记录加入到customertrade-record-all
) `. R1 F8 A# ?3 c0 Pend: n! D5 P( Q' g4 B
. P0 N# n# C/ k/ A
to update-local-reputation0 i4 T& ^3 y. E4 U
set [trade-record-one-len] of myself length [trade-record-one] of myself
, Z( r1 B) j2 K; P' Y8 _  }' Y
4 H" a" U. V+ J. A- _, z# ?. d: z+ p- J4 A2 D; x! y( g! k) B# @
;;if [trade-record-one-len] of myself > 3
1 n' D' w6 U1 E& n. Q" U& `* K
update-neighbor-total. ^, N' H* @- ?% w* X' M
;;
更新邻居节点的数目,在此进行! v  \( P  o4 l& j
let i 3
  t5 O( Z! n, ~, `let sum-time 0
, C% s2 {+ W+ ^7 M, o& O! N2 lwhile[i < [trade-record-one-len] of myself]
3 w: E$ @* a; o9 {+ y- ^" e" I, W! l[( [8 k# _0 o) h: w' z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 [, \* M/ k* C4 A8 B% y
set i
- Y: A3 t6 P6 D1 w( i + 1)
+ J, T1 @# ?6 b4 W( |1 _, a
]* }! m/ t$ h1 P; ]* n/ V
let j 3
& A3 P% k$ ^- f0 Llet sum-money 0
6 X- P7 H+ p, v5 {' V7 [! [% Wwhile[j < [trade-record-one-len] of myself]
) F) a3 n8 g8 R& r[
4 v% S# i" q* J$ n' t. N2 pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
! V  t) J$ Z- v- W$ d: @$ Vset j/ ^. `& g  L7 I* E
( j + 1)
, p$ r  L! [- V
]
. T& g. R* s$ D3 k$ R1 h' Xlet k 3
8 a. O" V9 Q! S: r8 Tlet power 0
% R$ }. C4 h, F# elet local 02 u0 T4 k# F; A+ v- z
while [k <[trade-record-one-len] of myself]
7 G& n( f4 d* n[  o6 |' V, e, \8 u* m
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) ; [2 P5 p) ?8 s
set k (k + 1)
( w0 a; ~% X) _+ `/ K, J]. L. {# F5 j+ g. K4 Q2 \4 r# F% B
set [local-reputation] of myself (local)
9 A) V. X4 N0 U4 w4 qend: b# v6 S0 _# B& J& D5 n4 V
* z) l; h3 ?; C" E8 x! C9 Z
to update-neighbor-total+ u' v1 A) S$ k

$ F- u3 s9 q# Xif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# J- Y+ ]- b9 P, `
5 ]/ _( ^0 B0 O* j; v

4 R" T4 u# e/ ^  nend" P0 E3 C: c" v; G
' ?) A1 C0 \8 \- |/ z( f6 {
to update-credibility-ijl ! j% [7 }( E4 Z- B4 F( d; g

+ Q* O# v& ~( P4 w' y;;
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。# k& v6 i" z$ @. \. E
let l 0( [' P. e) h; C* }- k9 j2 k
while[ l < people ]
4 \( x& ]/ X# O7 X;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
; ]5 j4 u$ D) O[
" \2 M, F  s/ i3 D& x3 ^# ]let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& i. _, Q" C6 |+ Sif (trade-record-one-j-l-len > 3)
- X) n* J+ O& l[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& }3 e6 F5 Z5 [# l
let i 3
& q' c0 f6 o, {) Vlet sum-time 0
7 j- a3 W2 }& A  ?" Y* wwhile[i < trade-record-one-len]
3 S" T. P# E* F8 N2 g[
6 i* ~+ Y1 S* b1 X, G/ `set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* P0 U# S! u! Zset i
# A) c% {+ ~) o* P2 }( i + 1)
5 P( X: z( `! h- K2 E" }1 g
]
# _; s7 a9 h6 S! x% Y2 ]7 Blet credibility-i-j-l 01 f* \0 p4 [  e2 Y- M0 \3 \1 _: j
;;i
评价(jjl的评价)/ l3 G$ \# q" l* ?" u2 f* m' R
let j 3
1 Z+ l& W5 ^1 Q4 C4 Olet k 4
  A; b4 ]. I7 K% p( ]while[j < trade-record-one-len]
% \2 {/ _; S' w6 Q; |# l[
. p) ]2 G# N# ^8 G$ v' iwhile [((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6 i1 }# o9 R& K
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), |+ V" [5 N% ~# I5 B
set j  V+ i) J* j  f/ Z3 S3 F  `
( j + 1)

4 ?- J5 M5 e/ M6 h  N" a]7 }7 p8 C: R: F
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 ))
) q+ e4 I2 T2 w* F" B. g5 z% X) w+ k
) J" P: U# s9 C; @+ o9 F% d
! Q9 y& |- @1 z# {8 r+ I
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% @5 f1 M5 Z7 }& a;;
及时更新il的评价质量的评价
/ x% w! E% p9 u" D6 xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: F! n/ B) g. d9 Z7 v. C; u
set l (l + 1)0 ^# Q' u- m% o2 h; Z5 C* t4 K
]
+ f: [# d: U) Y$ H$ C( Cend2 }, s8 J; s: |0 a$ m8 j  l6 i

: y" q/ Z/ O) vto update-credibility-list
( }5 J+ `' l1 I3 Q; ?: Ulet i 0
8 o; y# m/ c9 Owhile[i < people]
! b# D# m+ |/ o1 b# n4 Q[* [3 j, j% o& H
let j 05 Z) v) }% ~) P' Q5 L9 H8 Y
let note 0
9 ]: I7 ]/ T! ~% U" Vlet k 0* U, k' a) [& W, }
;;
计作出过评价的邻居节点的数目( D7 W( v9 P* |+ w$ w( O' C
while[j < people]
3 \* j& v! k8 ~! w8 K0 x+ u7 g2 l[
$ G8 H& w7 e% ^" d( ]) ]/ f. s6 Qif (item j( [credibility] of turtle (i + 1)) != -1)5 ^% F- e" l3 R9 o! \- w' v
;;
判断是否给本turtle的评价质量做出过评价的节点) M) r' I8 G! z( l
[set note (note + item j ([credibility]of turtle (i + 1)))
& M, {0 \1 f" L& ]2 v( \( Z9 l;;*(exp (-(people - 2)))/(people - 2))]

3 S; a  j* c4 q" z+ ?set k (k + 1)
) V# D. A$ q  b]
0 C& r. I# U3 \. B1 M7 N0 |set j (j + 1)4 o( E$ c1 v# a
]
) l: f+ ~/ k6 a3 Yset note (note *(exp (- (1 / k)))/ k)
  Y3 k( D( y$ T7 ~9 F/ \  v' U, ]set credibility-list (replace-item i credibility-list note)4 C) n& X' }; w4 C( w
set i (i + 1), q- G0 I9 O7 b
]* r6 i. C& f5 F3 F" |
end
7 m, q# q1 ^- {$ g" i" I: q6 R+ L* y3 c* V& ]; o1 [8 o7 M
to update-global-reputation-list$ Q, r( N/ q2 H3 c; r# g; }+ U
let j 0; P6 N% R& A  Y3 V) I8 ^
while[j < people]
0 Y! f# \- n1 x( j, ?% ^[
6 }4 c2 h  ?2 q! Nlet new 06 B  R  E2 P. ~0 J- V. I! i
;;
暂存新的一个全局声誉' i& ~7 Q+ x5 p1 h/ t; t
let i 0/ k2 @4 T# a' ]$ Y/ S, B
let sum-money 0
/ T7 ~* }* v6 vlet credibility-money 0
$ G% w  V; e  `* {. N. W; gwhile [i < people]( A0 x" q4 V& W/ H% ~, t
[# q+ w: c5 V* Z0 w; J# {8 a
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! e# T. f) g# v1 o' i' V5 h- l+ e  fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" w. N  f% ?0 E0 m+ j" u7 @. Iset i (i + 1)
2 X1 {3 c+ _# y7 w( E- @' C( A]
. c6 ]& a* V9 Y' @5 L9 jlet k 0; ^& V2 Z. h) S" F- K: }
let new1 0
1 f  {( X0 O- M3 O2 nwhile [k < people]5 g9 D7 s4 J! }3 ]9 b; W$ @7 X8 e
[
' o/ j: M+ a1 K6 aset 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)& Q2 r8 R  [: k; p% D
set k (k + 1)
% x2 m" O, v7 J. a]4 o$ Z$ B( S5 e) F1 q0 i2 @. h
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" i- c; T" X& o2 [/ V, J  i" C& Cset global-reputation-list (replace-item j global-reputation-list new)/ t% G' B5 i/ ?  d+ p* ]# `$ F
set j (j + 1)
$ K, G+ m$ z  F]% V2 a! [0 D. e6 t, L+ H
end
) H/ I' N! {8 P& O/ h3 N9 q8 _7 m
) Q: c3 r# i# u+ R5 X4 u

5 Y' c5 ~  ^% y9 nto get-color
5 u7 r" B- c1 G
- N- b! c& m' |3 \! ]8 x5 I9 \" Eset color blue
2 T$ ?8 \- u" W/ f7 k
end' }% ~; e) Z- F/ d8 E* U$ L

0 }6 L# |( Z/ a& s0 \8 j; Eto poll-class
: f" t. Z0 _, C5 G9 I: jend
( O5 s! ]+ a5 @1 T
6 |4 O$ L4 x/ I( f8 j8 q; w3 S8 ato setup-plot12 S, h3 B1 H! A  x$ M
7 f- l3 b& b- U/ h! N2 O: B
set-current-plot "Trends-of-Local-reputation"
% i8 ]; H  u" @+ S1 ~

. q2 [6 Q2 D- ?" h! i; ]1 F7 X  kset-plot-x-range 0 xmax
9 K4 [; Q# Q- y0 {3 O  j8 g" @" W
* w! Y, C8 Y6 O
set-plot-y-range 0.0 ymax

* |; v$ o( G  [1 i; Q& `% Yend
3 [! ?$ [6 {9 i3 \. X: }  R4 Q' w" h6 F* q4 h. `
to setup-plot2  E0 v+ x6 w3 k

$ |8 [9 Q/ r( F1 p- Nset-current-plot "Trends-of-global-reputation"

3 c) i& E5 H& W8 w: G. F9 [; n" o( r2 D+ o4 r1 Q0 D, a/ e
set-plot-x-range 0 xmax
. S1 h5 q# x) [6 `3 _
( v* [$ V; r9 M( u" H9 l! D$ A* e
set-plot-y-range 0.0 ymax
* t/ x' h7 H4 n2 \
end* B) l$ ^% P2 [& h! s% _
8 K% w. X, D, D2 \
to setup-plot3
, v0 O0 d, ^6 `1 `0 ^! `" C" E0 Z- |; h( M& u
set-current-plot "Trends-of-credibility"

) U3 e2 N8 y- [" Z/ C
) O8 t0 T3 Z7 t8 lset-plot-x-range 0 xmax

4 _/ h1 d! a0 |8 o+ d) {- U# E7 a8 K
set-plot-y-range 0.0 ymax
2 D6 T$ R: ^0 I+ n$ |
end+ d" g4 A3 ]- e( N9 b7 `
4 J0 S6 \! @6 @: h' t
to do-plots
7 @. I0 e9 ~* nset-current-plot "Trends-of-Local-reputation"
/ ?" T* ~- i2 X) ]4 @0 U& Kset-current-plot-pen "Honest service"
2 V6 B% F: C1 |/ u7 e. p* mend
/ X' E$ `4 A( S6 T# Y6 m6 P
  Z" d; F/ H% a% 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.
; X6 v0 a1 M% b  W5 n/ q8 I& s: f5 D, T) ~0 X. Z5 K  N
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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