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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:6 A4 s4 {0 s  J- ~; D# j0 S. N
to do-business : b7 L' Z4 ], O# i3 P4 a+ E
rt random 360
9 ]  c7 v! E4 G' O fd 14 p: A8 D# s: V
ifelse(other turtles-here != nobody)[
3 x* v7 b; Z, A5 p$ B; f' V% 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.- f5 `5 ?2 T' s3 J; t. Q0 ~
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: U3 l. d! C/ R6 P   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 _: h- j" A1 F
   set [trade-record-one-len] of self length [trade-record-one] of self0 C" l& _: A8 X' R7 m5 s: b
   set trade-record-current( list (timer) (random money-upper-limit))
! Y: P4 _$ z* p9 v) Q, A' l; `; E7 B
问题的提示如下:0 e. O  U. z4 i8 o4 \
  K0 L4 L2 D* ~8 `* ?$ W
error while turtle 50 running OF in procedure DO-BUSINESS
# q; A$ V* g9 Z6 M' i5 r9 n/ S  called by procedure GO/ I2 E  f* s) y6 N0 M; M) j
OF expected input to be a turtle agentset or turtle but got NOBODY instead.$ B; S; q/ C- z- \9 O( f# A7 c7 K
(halted running of go)  Z" ?7 K" P- V4 f) }

* A! I7 L4 j, }8 P( }! ]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~~
0 v$ b# @/ \% i( e$ k: Q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
% x& _! R& s8 r" ~0 p+ vglobals[
2 G  K% q( ^& g. k# u* C5 X- Oxmax
* ^+ f1 F9 {0 u/ N$ O2 V8 e5 }ymax: p3 x2 q# n6 C5 ?9 m4 V: t
global-reputation-list0 A6 p$ c4 M; K" B; c3 j0 W

" w+ S7 ~% F' s, K7 A;;
每一个turtle的全局声誉都存在此LIST
7 l3 j( d! {4 u/ A+ g" `credibility-list$ W. \" g* c, {" r3 _1 b/ k; D
;;
每一个turtle的评价可信度  ?4 U0 f. v) D: P6 H0 b) i' f7 k
honest-service
1 [# X: O( L3 I4 Qunhonest-service
; e  E( T) f. P: t3 Q0 coscillation8 S5 g7 K+ k# G" @4 W% {6 D
rand-dynamic
- i  n. H7 |5 r- E: L]
- q2 n# e5 j& k7 ~+ ]6 F- _4 j2 H
9 N# C* [: e; L) ^+ N8 S+ e  L- T/ [turtles-own[" `0 b/ E* q5 G# U) k0 X
trade-record-all
, \6 M0 U% ^  }, d9 M;;a list of lists,
trade-record-one组成
1 i! C2 `8 O) N" {trade-record-one
  i8 k% |" _, g6 ^;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, h4 y1 ]3 k. |: X% C! O& A
" m3 E+ s6 G' [2 M* l;;[
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]]
- ?. k5 _" ~; }& R% J) I4 strade-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]
8 r( ^' {; |+ @/ Ycredibility-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list6 D; w+ h4 D8 x: }! e$ F
neighbor-total) b* d, G+ U% [: x( @
;;
记录该turtle的邻居节点的数目
0 G- P3 q5 y2 Ztrade-time
4 {# ]4 I& G: t! _  C% a  o;;
当前发生交易的turtle的交易时间0 w+ Z. c  \* a7 i. f
appraise-give4 F6 T$ b- {8 C6 R# f
;;
当前发生交易时给出的评价
6 `6 `/ l2 d9 jappraise-receive
  _5 T2 X% a* O8 [3 w( g% d;;
当前发生交易时收到的评价
. s2 }9 _6 p3 S1 K9 ~& U" K# Wappraise-time
% k0 y' T: y& ^, Y. n;;
当前发生交易时的评价时间
( M4 N- b+ r4 Vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉6 e2 ^+ M  E7 l5 _3 i: e
trade-times-total4 S# E( K( t: R; s6 ?5 h- X
;;
与当前turtle的交易总次数
' ]8 {: r. ^, u* l0 `1 W: s0 mtrade-money-total
5 S7 `1 b& q. E; N;;
与当前turtle的交易总金额7 M/ d+ ?1 j) u) G' Q7 A' F' k5 y
local-reputation
! O9 w  m% y1 l4 e& Hglobal-reputation7 M$ F4 F. B) T9 T; }. b, p
credibility
8 w- w3 e8 k: J2 b% U) v;;
评价可信度,每次交易后都需要更新
! b& }5 s( E" O: b0 ]credibility-all
3 Q( l( a' F1 p' `# k1 j8 C: g3 @;;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( Q% R0 @$ M# O, @% G
% ^1 k7 g, \, B6 o+ \( d. V7 B. R
;;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
' W' R7 f* k7 t4 n0 x( icredibility-one, z3 w1 @1 ~+ g. c. {+ m3 ?
;;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people9 M. J( S. S: C2 j! ]
global-proportion0 ~5 ]$ Q8 n0 M; f) x
customer
+ L/ C# @! U. H* D3 hcustomer-no( a, J; F  `1 V0 q8 K# ^
trust-ok# K7 W* M% r  N! r) D/ F
trade-record-one-len;;trade-record-one的长度
( ~; f4 X1 i2 x8 |2 B$ F% |9 w! ]( \]/ s; Y) q: K" [( E+ L, F
" F' a1 p$ m- `, L% v! T
;;setup procedure/ T! V  e9 `2 Q3 E' R8 H) x
2 M1 _% l+ o0 ~  O& I# a
to setup
' S! T3 t8 Z$ |# b0 f3 l
' O7 b5 e- p9 eca
9 O, ]& q6 T/ |: m
& \: @1 l2 {* V8 i  L% l
initialize-settings
# S. p2 d* M7 B$ _5 R4 O' h  t
: J; W# R4 `/ o
crt people [setup-turtles]

6 [9 ]3 j  k2 L+ I1 K3 h  i% f5 Y: E& |
reset-timer
& a1 u, }7 r+ S3 H' `
9 n0 i' H, k9 M* q* b" n
poll-class
0 c% G/ v/ P6 w

" q, X1 N6 u, l' O) Fsetup-plots
/ R. B- j& z* d! @* L
" R3 h$ M9 @% O8 o% U
do-plots
  U1 q6 r9 ~7 T  X2 D- Z4 B% G7 x$ _
end
( E! N2 x+ E$ G# M! A& Q6 n' @! L$ C4 l% P$ M7 a6 a1 n
to initialize-settings
5 ^9 [2 i: `6 V- I) |( k; ?3 X/ |# u" w1 l% V# e+ W0 U
set global-reputation-list []

% D  R( v- [' `+ ~. f% F8 P: p, u7 ~- i" x/ f" H5 C' `9 j' R
set credibility-list n-values people [0.5]
% P2 d! D5 d+ F0 A. C

( M5 z7 R- S3 }9 Lset honest-service 0

) T8 K& k( R& R5 ^0 V4 d$ M7 d' \" B) m" C* P% E" A
set unhonest-service 0
6 ]2 N! N! s( m/ q$ P; Y
$ ?8 R: N3 A2 G3 t
set oscillation 0
5 _# R! M. x# v2 p8 D! Y8 x6 T
  l# F2 K. Q) A
set rand-dynamic 0

! A% C+ v( y+ i. p" p. I0 u1 Rend5 c1 U1 N/ ]7 j

$ [+ w7 g7 }4 S, m/ K9 m( p5 Dto setup-turtles 7 a0 \6 i8 O" J- S; i' \7 k
set shape "person"
# P6 E& O2 `3 I& L/ D; d3 Jsetxy random-xcor random-ycor
! k3 o; l8 d  U% T6 U+ H( Qset trade-record-one []
/ q" n1 r9 H( h, _
7 @: Y* i2 G" N3 r" I2 P
set trade-record-all n-values people [(list (? + 1) 0 0)] / T9 V3 Q* S" D4 e

' u& q% H% i) z5 i3 x/ K/ T1 v( Xset trade-record-current []% A! [7 u- C- j- i4 b# b
set credibility-receive []# R: c1 E2 M. y' y8 i' E
set local-reputation 0.5
* ~  \( K$ _' a1 I6 D9 hset neighbor-total 0
# O6 B9 h" N  |) T# j5 j0 ^set trade-times-total 0
. {. g, X( G) Z. Z( |  j* [$ eset trade-money-total 0
0 S/ M" s/ {7 B$ G$ k# }& x* T2 cset customer nobody0 b( F& s9 Q( I0 S# U& ]5 k
set credibility-all n-values people [creat-credibility]
7 Q! ]+ ^! k/ f+ |8 d1 _. oset credibility n-values people [-1]8 y4 L: [, I" F" ?6 w' u; a
get-color" W# b0 w+ n0 S( E, |6 S) ~

& [- Y# O! T6 o  }4 Uend7 }2 G% O8 G4 ?" N

' D5 y3 ~1 j/ Xto-report creat-credibility/ [, a6 [2 s4 [) Z5 T
report n-values people [0.5]) e; h2 m) w/ g: n
end8 Z9 m, {( {1 d% c

* C- k* e! ^" u8 Kto setup-plots
' x: y& x3 B! l% ~' @* O8 u/ y! a
set xmax 30

, @, d5 A& D, l9 a
! Q+ b0 Q1 I$ M- q" }. wset ymax 1.0

6 P* S- I6 D& S" ]0 R" O9 |0 C" r$ E! p. b
clear-all-plots

/ U! L* O& `% I% `  t& @+ {
! R8 ~4 K# W! D% m7 Lsetup-plot1

! t% R0 |" H* Q7 @+ J( W5 B* Q8 ]; w# s, G& f+ q! v
setup-plot2
9 a) r7 h" u9 L- n4 v
1 j( @, T3 X8 F* f
setup-plot3
4 i/ i$ k( J0 q
end
" S/ E# Y" f( S" E% V
6 W( p3 B1 E$ q" T2 R% j;;run time procedures
& I% A8 O. H( G5 [; e$ q" ?' W" F$ z! L! [8 Q- M
to go
6 L- W6 ^! X7 d: q8 G( C" c( v( U4 `# e8 N, y( {) B8 }  a
ask turtles [do-business]
& `$ C* S) E2 {
end. x1 a' y7 I1 ?

+ g2 {; [! X3 C+ H: wto do-business ' V% \7 D- v3 h" m# z
" J2 G* e2 u$ Y2 h) p  V7 {( Z

" Z5 i9 r+ e# F7 F: G6 h1 vrt random 360
9 ]2 x% L8 J, Z; l% W" i
( O( P( u/ d; D, A/ v1 v
fd 1
) R$ @. Y! ]  W1 W1 ?. b& }
# g/ {% p9 R+ ], K
ifelse(other turtles-here != nobody)[

# g  |, o3 P, w/ L: \, y. ~8 W, `. I7 W3 T: d& f
set customer one-of other turtles-here
2 m# n7 _0 F& Q4 p/ D7 W
/ ^7 `' r  T6 H& B) f' t! A
;; set [customer] of customer myself
2 b5 |4 _9 S% c  `8 N6 `! w/ R0 J
$ G& y7 W4 A  M; l# O
set [trade-record-one] of self item (([who] of customer) - 1)
* S% p( b/ ^: A! J$ p8 S[trade-record-all]of self( J9 \- H+ U3 j2 j* z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 f: ^9 q; H$ `; M
# m' `4 L0 x0 t# H7 T& c- o0 m
set [trade-record-one] of customer item (([who] of self) - 1)' Q8 J. r2 y) P. N& z, s
[trade-record-all]of customer
: M9 ~9 _2 g* y2 }! u
5 L4 _) G: T  d$ w4 p# K
set [trade-record-one-len] of self length [trade-record-one] of self
; O( b; P8 f& X3 ^
5 W% F/ O! c/ X' m2 `
set trade-record-current( list (timer) (random money-upper-limit))

+ M8 F# c$ ]' n! n( r( G$ ~. q$ K* [. O5 O8 t5 r
ask self [do-trust]4 [3 O8 r6 }, D$ [; H/ [3 K) [1 ]
;;
先求ij的信任度2 \4 s. W; `4 U4 S* f  L
) v; f! D: M( Y1 i8 K( a6 r
if ([trust-ok] of self)
: _  K" s0 {/ V0 N) T;;
根据ij的信任度来决定是否与j进行交易[: {7 s- w  d% y& n
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% ^- ~! L1 E) w8 j7 |( M0 S

" f2 Z0 q* |* x& n) @4 `$ d/ ]2 Q[

* E( y$ B; G# L% |* p
) Z- u0 Y" m- L1 Q) [0 ^, I2 |do-trade

0 t- f7 U' x7 A' }
/ |, s$ N% d9 M8 `1 _1 T9 Rupdate-credibility-ijl

+ B: M! |3 M: E+ F0 b8 o" r5 G
. c* j3 a9 _- {6 p: i: Lupdate-credibility-list
& o# P7 Y* ?4 w, f4 V

, j/ `: Z% a4 c- G& k; G7 F* ^2 m8 {9 A, b1 ~! `
update-global-reputation-list

! Z# u8 V2 J8 i  p! K
- i# M1 W/ ^: Z% \, vpoll-class
( f8 j; A2 ?% P& W  n
9 a& V# _: ~/ ~1 q
get-color
% l' v( a+ C( Z7 F* f7 |

4 ^# `  M1 P2 p$ e' S2 v. e% \* Z]]' `! t: |+ t  v- N
" P+ W6 q; ^- A0 C* `8 F$ s: u" e
;;
如果所得的信任度满足条件,则进行交易" e. C6 z5 [+ E1 l+ t  C

! V0 G9 C; O8 {& N9 f, B[

1 p& L  w- S5 p6 r8 n) W1 o7 N/ }9 }  ?; ~9 U$ {4 Y
rt random 360

+ }. f' W1 L: J& e8 l& ?5 E2 C/ l- u. L# Q
fd 1
; u* T6 u- G& L6 @/ Q! _

9 v. `6 b% w1 V5 T]

7 U1 y( R( ]/ E  X- N, T- G$ t- v+ x
end
; i7 n& a4 g) |
3 b- t' M  y0 l& I" i- q
to do-trust - ^' M% a7 j, y4 t3 K
set trust-ok False! p6 E' F; o! F" H6 Z

- i: @& ~% {) r% G( B& V" T" W
2 A2 X# V" ?- ~: p
let max-trade-times 0
+ D$ X* y, w1 W! q) |8 u# Y  v: gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& L' y6 H: o# u0 }let max-trade-money 07 O; U$ Q, ~. ]* j( d! `
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 N( V9 C# R, f( G
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)): A" R0 z, _% P( l/ ]. V
- D- Y' e. q2 l2 ?/ s7 F" k
- S7 N, x' W$ a9 j3 D
get-global-proportion! z; }( e* a( d4 b
let trust-value! C# @& o3 O* [; b  E# @5 |$ X
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)

+ \; G* r& n# kif(trust-value > trade-trust-value): M$ d* Q5 ?, Y: ~( V; L
[set trust-ok true]
2 ?1 A- }4 p) }; d, M5 mend- B9 y6 d% a% M" O6 j
, N! y7 ]7 D& z0 i) |9 v2 m
to get-global-proportion/ N. H0 J; E* Y# p
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); d) i1 W& i  W& M! }# u0 s2 q
[set global-proportion 0]
. T) L8 s# U1 c3 A5 u[let i 0! l  v6 ]) u' O+ [9 z, D& H
let sum-money 00 |- F2 i# J" R# d* H+ I
while[ i < people]* u' R" Q4 Y0 M  d2 b/ O
[" P( S& G* s( D( d& w3 a  I
if( length (item i
- E, |! J6 J9 R- {[trade-record-all] of customer) > 3 )
3 u0 b! C9 z. L  l0 _
[
3 Z4 A: b* n, G( G$ Cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 v  }4 l- e% E$ n]0 N% c. X. V8 h5 @) K$ c" }0 b- D
]& z+ @6 w* k, S9 P8 S0 B9 P
let j 03 N" q6 E2 U6 W& w1 v
let note 0/ O0 x- L" q: _: x2 S. v
while[ j < people]8 @( N$ J3 A* V) `% ?/ q7 B, L
[. C/ L* Q+ H! R0 C! ^5 J0 v; m3 V
if( length (item i
1 B4 g  _  R! w  J[trade-record-all] of customer) > 3 )

0 Z% e4 E4 S. a; y9 c8 t5 ]6 F[
- }; A4 p' R( q8 C- z9 i2 lifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" j* b+ }0 _( \0 C6 E[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: ^: h1 C' H2 r" o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, N/ Y; z: j& \, l: z4 o]5 z6 I) w! s7 \. t( t' X
]
; S' k1 D9 r' [9 X* R: K; m8 sset global-proportion note
3 e, S! D4 V, L3 l5 p8 F]: K( l+ a+ v; s
end' M2 T6 J6 u5 b- h% k
7 h$ F9 [, M: ^$ {4 z5 T8 V3 Q
to do-trade
/ E- Q' l9 ~$ V1 v1 v;;
这个过程实际上是给双方作出评价的过程' Q+ w, o- B) e  K# {. |: {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ ?) E* S. _  _' `& H) b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 j* S  n' G; `: r7 _
set trade-record-current lput(timer) trade-record-current
/ v% j* ^' J/ x; j+ b9 l& B# o& H;;
评价时间
! c- t; J/ \& H2 y* ^( C4 E  l( wask myself [
. }" z- y2 _$ [# Q; @3 U3 Rupdate-local-reputation1 d* R: S8 Q, T' L1 B: d% ]" B( E
set trade-record-current lput([local-reputation] of myself) trade-record-current) v% ?4 j2 c  U; A
]/ H) T+ T, ~3 B
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 R2 T; a9 ]3 ?' O7 c
;;
将此次交易的记录加入到trade-record-one! |: h8 x0 v/ `
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& g" C4 h) U# [& d' Clet note (item 2 trade-record-current )
( p5 g; Y( S  x0 x1 J' Vset trade-record-current
! S0 q/ S5 ]+ e(replace-item 2 trade-record-current (item 3 trade-record-current))
! g- g7 O( e  O* e
set trade-record-current. J3 ~3 n( N% z% O1 c# h
(replace-item 3 trade-record-current note)2 f: r) m; _0 A; C
3 y' W" }3 p' z  x  w

5 a% K# v6 u: a/ c# l5 ]% @; j! i( zask customer [
3 t/ r" N* Y6 H( i+ Supdate-local-reputation" y, g  {2 S+ m( w0 b! p8 i* [
set trade-record-current6 l8 }4 |+ o4 l. p) y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ l/ n- o2 m; |* A]; s- m0 L+ n1 d# v8 a* C
$ T$ m2 q6 @) b, l+ X* S
" y2 w/ I" i8 G7 @
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, x  {+ @) S$ R* h6 s3 C

0 f3 [  Z# L2 p& I2 x. N5 f3 wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ S& e& s/ E3 M4 s
;;
将此次交易的记录加入到customertrade-record-all
& ^: f- ]$ S& M$ _3 z' X8 k: Oend
4 i9 y! C7 m2 u2 K% D6 J4 }9 e" U* g( ^4 }8 Z
to update-local-reputation3 `8 D: Q7 ]" |# n. c7 Q5 Z
set [trade-record-one-len] of myself length [trade-record-one] of myself5 c% Y$ `: @# ~% s8 N$ L

# E# a* L5 w2 w5 Q4 u7 v, N3 l( {$ T3 f( _4 p
;;if [trade-record-one-len] of myself > 3
0 f9 F2 C3 y" L  z
update-neighbor-total
% A" M4 u; o- @; H3 N  F8 k% E2 G;;
更新邻居节点的数目,在此进行
/ s" c7 P/ x4 P: A6 Ylet i 36 `# D2 [; m. o  f, l9 I
let sum-time 0
7 P. v5 J" A$ @: m0 L. n: w7 Fwhile[i < [trade-record-one-len] of myself]+ T  e+ t2 O( E$ S" e3 T- [! z
[7 [6 [" A2 t" f. r2 P! Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 `$ ?$ |7 t3 z: ~. _- V
set i
( a) V) \& \1 x$ h) a% B; H( i + 1)

5 f. t& a6 X$ ?) L]+ `' p8 v* Q6 r; ?/ A5 F* `! r
let j 3
6 _8 n2 L& s! Klet sum-money 0! o2 f2 O3 A& Z, i. J3 Z/ x* I
while[j < [trade-record-one-len] of myself]
& H/ K- c* g* i. h  n; E[
+ p, |9 K( o8 y# v% mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)( y( M1 o! X. E
set j
4 x& Y, h7 i2 f6 B" _) c1 j" j9 w( j + 1)

. d1 _; Q, i+ r4 u4 _3 l5 U+ N]6 M3 L" |% M+ B/ L
let k 3+ X& l5 W3 j" P0 I$ Z2 s6 }3 ?
let power 0
$ R  H0 X9 g" p: `8 ^/ [8 ]$ mlet local 0
3 Y: E5 _) |+ X. Q- ~8 z- J8 s% y$ ~while [k <[trade-record-one-len] of myself]
( N& ?8 `6 N: y# L' R[
, R  l% V( w2 `) i9 oset 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)
) V  d  J( `! T/ w  Z4 Kset k (k + 1)8 `" Z- K1 _* w* B3 j
]' z% ^/ O# w" s1 G
set [local-reputation] of myself (local)% s7 M- [1 M  S
end
" w+ z( }' o( O4 E9 I0 V" v, `" m3 s( Q* z& y- P1 T( y/ L
to update-neighbor-total
* u5 H" {% l/ [) t) {( Q* p4 k3 Z* m' P: C
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( Z" ~! b! ]& z7 _( v6 o
7 w. f1 G  `7 `8 T

4 b$ J8 ~) N0 t& ]  A  J% kend
8 r4 q! K' D# e: @% p
& i  U. r6 e& Fto update-credibility-ijl
. J- B- T# `5 F" a+ y& ^8 {0 |1 \( 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。- f) o. \* u4 N
let l 0
' B; v* G. u4 n( lwhile[ l < people ]' K9 D3 u" I  Q  k0 _& F, R
;;
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
; D- ]5 f0 k4 k! }- G) Z[
% R7 I0 h- F# y3 f! o: Zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 V0 I  I- T6 `8 a  P- B- |: A- l
if (trade-record-one-j-l-len > 3)
- m8 p& x0 h% q* w[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 f" N- q0 H, H. T
let i 3
& S$ G( z- r4 L( J7 _# Glet sum-time 0
' f/ E, s& v& T; v3 {  Z9 C/ o/ Nwhile[i < trade-record-one-len]8 q; ~2 y# `3 c! u* V8 O0 b
[
* n0 u# n* p4 Pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% [. l+ A; X! _/ [" p4 [
set i
' V" k) \6 i3 P2 R3 M* k+ _( i + 1)
% W+ t8 x4 I) c" ]
]: e1 \9 K! H8 t' s) z5 `
let credibility-i-j-l 0) k* E! o9 ^5 ]" E, Q2 L
;;i
评价(jjl的评价)/ M8 n" [; l* X/ T+ s0 d
let j 3$ L4 o  c7 |0 ]) [2 b0 ?
let k 4
, N& l7 _; z; S$ Fwhile[j < trade-record-one-len]
5 ]" ~8 y+ J4 V( ?[
& R& _- x- `3 P) w' h" pwhile [((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 ?& P* n0 R  Aset 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)
$ A5 ]: S/ D' D& [set j
- s$ W! N+ T: f) F  S( j + 1)
" s% J/ i# M$ X9 J1 ?; y; O
]
, Y" m# M5 @1 o: l; U+ Hset [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 g9 T1 h( b7 _
$ e+ `2 a* C3 b
! r1 v9 k. [* s" a5 A% K3 r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ l% T7 T, H, n
;;
及时更新il的评价质量的评价5 Y/ M0 C3 F* `( @6 b4 V6 [* J5 S
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) S& L/ y, i1 T; s+ h% }: _
set l (l + 1)- Q1 n4 v# K: ^
]0 C0 r9 K* Q$ i, D$ q
end
6 `8 m# a$ I) A& N0 a8 Q$ D) {
$ l% n5 T; S, h" R. E. K! A' z: Nto update-credibility-list8 Z1 u- C; i, a& W+ t; M# q
let i 05 {: k, |. G% |- K$ V% N" e
while[i < people]& N( x4 W# s7 L" A
[- D9 _5 n* u+ e7 U  _; {9 K
let j 0
. p7 {, }# b: A- P  T# z8 xlet note 0
* f4 F/ \$ B# J  ]let k 0
+ }5 K8 G7 k: J$ g/ k& |. r;;
计作出过评价的邻居节点的数目
, p7 d+ [, _8 z( ?" {! kwhile[j < people]
) S6 R7 H5 _: A4 F6 W8 e/ \7 t7 k. N. V[
/ y  E3 l/ g$ p/ Tif (item j( [credibility] of turtle (i + 1)) != -1)$ L  x. F& M! h* E
;;
判断是否给本turtle的评价质量做出过评价的节点
: S8 m' I( d* F6 b[set note (note + item j ([credibility]of turtle (i + 1)))% C% {& R. L4 ?! J8 V$ u
;;*(exp (-(people - 2)))/(people - 2))]
( r  k* D4 @+ F7 ~
set k (k + 1)* i# h1 q5 r' M$ q) b4 g
]
$ y" E: E* J2 Q/ I$ @% ?( U% l4 Wset j (j + 1)
) `* n, A* r$ I6 t, I! d& |  F]
0 T0 y2 S4 Q  o7 Bset note (note *(exp (- (1 / k)))/ k)
1 C. Z: M2 a" I  aset credibility-list (replace-item i credibility-list note)
7 ]' x9 [) b. vset i (i + 1)+ Y% d/ K0 {6 A1 j2 q2 J7 e
]
# c( v" O. ]# S  ^: p; K# D" Kend
! g, X, K& H/ c2 N5 i; O( e) b/ z* |2 D
to update-global-reputation-list
( ^8 H6 [8 p7 v* flet j 0
$ X: h' z, i4 ?. L4 Dwhile[j < people]
$ X, F4 b4 \: O6 L( V; f[' e0 f" O2 B7 v5 }
let new 0
0 Y* N! P. f$ q( ~9 M/ i& O;;
暂存新的一个全局声誉' g+ c4 @2 N: G: b# r- }2 w4 P
let i 05 D' q1 }' @, `
let sum-money 0( T( `# y4 P9 v) o, U/ {+ q
let credibility-money 0
1 _/ y9 @  L* R( Zwhile [i < people]
2 a# z! V. ]0 \2 @: ^[3 `6 C4 X" T4 E) Z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 ?' E8 o; Z1 L/ Lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' x* S5 \( W" Z; w1 Y# {set i (i + 1)' Y. e2 @6 F* f0 G8 _
]/ \7 ~# D/ k$ V4 A5 j& [$ x
let k 04 Y! E  M) D9 Q% N4 N
let new1 0
/ }3 {6 U1 `2 n" ewhile [k < people]
+ u# I- `6 ]6 `( y[
" B/ R- U) z$ _' m& L* i' fset 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 X" R, ?  r$ E" q+ L
set k (k + 1)
$ @% X, k  {5 h5 ~9 z]
- G8 p( o% u( X6 G# }* hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 y( _, r; d* J' `, @3 ?set global-reputation-list (replace-item j global-reputation-list new)
, e6 F- `* h* O9 t$ M# J7 W+ |* qset j (j + 1)
: Z: y1 ^4 f8 k& a8 P, x5 S]; J9 }- _* s7 }3 ~- F) h) ^" o$ @
end
" X$ `! z& k0 ^  y4 ~7 h3 w8 |1 c- x5 T! a" ]( g: p4 q6 j
, H/ o- }8 Z" g

  V$ V9 [+ P5 w$ ?' f# uto get-color
9 l% d, v4 Q/ s) e6 U
8 |- i% I# U7 sset color blue

. @; J1 Z) E  a; Q; N+ [$ ~3 ~end
  T4 u; b' N; L, D$ X' i3 R$ ]3 ?& M/ B
to poll-class
2 i  Y% k+ P& {end
; c: U5 U& Y! e. h& Z/ T9 [2 H7 T- A8 v9 N, U
to setup-plot1
3 N7 V1 i) p& Q9 i7 r( y! c# t. q$ h) ]8 W% O
set-current-plot "Trends-of-Local-reputation"
  P; b0 R! B' d  o) w* M) n: {
6 d  F8 X3 `. ?/ t/ |
set-plot-x-range 0 xmax

6 d3 X) i# b  I/ ~: H9 }
; L; o8 y; |$ y; ~" v7 vset-plot-y-range 0.0 ymax

/ u* Z& X5 y4 ~$ u  xend
# Y* K! o0 i3 T: r* I
* n8 x% u8 `( b6 sto setup-plot2( t, g+ b6 ]/ O, `' q

+ e. v3 y/ e# j- E$ v- o( f6 `$ hset-current-plot "Trends-of-global-reputation"
2 r; M# d$ Y1 g
3 L$ G7 n+ s( i' P
set-plot-x-range 0 xmax

+ I4 N0 [, u1 E# h5 u' E5 _; Z6 w3 b9 U8 r
set-plot-y-range 0.0 ymax

4 j1 y/ V$ ]* X. m& P; R$ jend
$ K6 E- P; k) L( ^5 E
+ u8 ]+ X3 L' g5 q& j; sto setup-plot3& J/ X- V2 q9 z9 K4 R
! V: ]$ a/ j1 a9 _
set-current-plot "Trends-of-credibility"
' j) g% |0 n: p
! s! m7 `# R2 d" a6 w
set-plot-x-range 0 xmax
# k6 L% S. A8 u$ ^
! K% T6 f4 g. V1 {) L1 u6 w) _1 R! ~
set-plot-y-range 0.0 ymax
0 `1 j5 M* J6 l
end
. u% j# o2 C2 A' R
; `2 G7 _# w( o4 X# V7 Wto do-plots
( u+ f% G/ j! e; i- gset-current-plot "Trends-of-Local-reputation": p- W  n& v" R9 M/ e; X7 ?  R3 X
set-current-plot-pen "Honest service"
0 d4 m2 |$ z% Pend' z4 O- W6 b; ~/ t( X

% K  T7 b4 l3 N! A9 O( u% ]4 e[ 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.4 O& V, ^  X* n9 f) G

; R0 [$ s: g, u" J: V' Z1 p: 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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