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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 Q7 [. M$ I( \# L
to do-business . }2 v3 Q" o+ {8 c, ?7 x- b4 H+ C( E
rt random 3602 Z0 J( @( P. e) K2 z# ]
fd 1
" j% ?* S  {2 q. |$ y+ D" \ ifelse(other turtles-here != nobody)[$ Q- S6 |4 B' ~$ z2 a3 n% U* }4 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.2 |" c2 J$ l1 L" n  s
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 X! q: s& p& A! x3 Q; g7 m
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( F# `" I. a, m+ `8 @/ M   set [trade-record-one-len] of self length [trade-record-one] of self
; j2 @. q6 p! ]( A6 g   set trade-record-current( list (timer) (random money-upper-limit))* o' {1 C. k5 `0 R9 [+ H
7 y0 b) r* K- W) L( _' @  h' O; Q) M
问题的提示如下:
+ {) p3 K: d3 L2 {. z
) j( [0 Q. m5 H, Y# \% ?3 o" ferror while turtle 50 running OF in procedure DO-BUSINESS. f* ~! W( G, U8 z& f5 m, R
  called by procedure GO7 j% X3 Y" L) V4 i
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, l2 Y( d- @# b( U' h7 e
(halted running of go)
+ J4 H7 V' o/ ~6 k* ^4 |3 @  a9 m; e8 ^( w6 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~~+ D' p3 S7 n! S
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
+ Y! Y3 a- ?! L3 o9 w  O1 jglobals[
* n3 J+ Q: \: oxmax
  ~4 m9 |" v* P4 x, t! u( fymax
/ R8 Y' |2 o# f* }global-reputation-list9 \5 L: M0 W, U! {

7 y- H+ ^, S7 `4 a& F1 S& [9 y;;
每一个turtle的全局声誉都存在此LIST/ S, N$ q3 C" @  Z. R
credibility-list
6 s/ M3 U8 \0 Y6 m;;
每一个turtle的评价可信度
6 t8 T1 q! l& Z% {7 xhonest-service" Z, F+ x1 M3 u3 w- k% d
unhonest-service7 C" X6 g. G+ m% O1 ?
oscillation
  L. s! x: g# S! b2 z5 r" hrand-dynamic
; o4 Z# {) K7 a( Q]
# x3 S; X) ~. u- @2 c% w1 i$ p7 _' V4 E) a3 {; v
turtles-own[
- Q% p6 t+ K* B* k. Y. Y! btrade-record-all. ~0 d' ?0 @8 O
;;a list of lists,
trade-record-one组成
& W- ~. a+ I" R. m0 E, @trade-record-one
$ x; c5 f5 B) 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* F8 B( j' q" J7 k( A
" q( [% s+ d0 r$ K4 ~' U/ [0 `% \
;;[
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]]1 n. G6 P& ~# @# u2 C9 p/ w# k
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]% p; n- @1 T; ]& ]: @( G9 d
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list/ C, w! U# f: |/ e' @
neighbor-total
9 P7 o0 R- J. L1 U8 t. w+ [;;
记录该turtle的邻居节点的数目
+ K8 H/ e$ t, q8 etrade-time/ E* c) p/ Y9 u& c5 j7 s
;;
当前发生交易的turtle的交易时间
; J9 _4 ], z9 L, ^  Q& `, happraise-give
: K' Y5 B. U/ o0 Y! K, F;;
当前发生交易时给出的评价
4 |" K8 V  R9 Vappraise-receive, y$ H9 h% Y6 _# N, `. r+ H
;;
当前发生交易时收到的评价
0 ]" J( g: J1 iappraise-time0 ~. A6 x& }: B* ?
;;
当前发生交易时的评价时间
6 g* @  D8 P" g6 Y% W& Plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉( }+ L2 a! U5 [6 q! e3 H5 p
trade-times-total
0 G+ [. O5 K" ~- ]4 z;;
与当前turtle的交易总次数
7 Q* X+ J% x6 O$ x+ |, I3 D  Vtrade-money-total
% ?5 C, E  G* _8 L+ Q;;
与当前turtle的交易总金额
1 o& R4 t7 Y. J! V3 B- n3 ~; p  _: U+ Elocal-reputation
9 `7 i* K: e' \% A  }global-reputation# T/ v. H9 p" V: O1 |4 O9 r3 j5 l; B
credibility- U! p8 @$ T: a4 W
;;
评价可信度,每次交易后都需要更新
  T" z0 l) e* O6 I  h" @credibility-all
. V5 }( f5 i- H# M;;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7 P+ D2 E5 V6 f- Q& R4 F

; b8 V9 P) J# F& W;;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$ S* Q; i: F& I+ Z
credibility-one! t6 E& e0 X: [: W' b0 m0 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people2 D, A# ~$ u3 w' T2 g# B- R6 Q
global-proportion2 l% r3 B: c' M- Y' U  K+ r
customer
2 Y3 O: b( B. K% d" M+ qcustomer-no
4 t* l" o" ]1 d2 f, S6 B9 n& ntrust-ok
& x! N4 t! j/ w& U$ x$ A3 G* R+ utrade-record-one-len;;trade-record-one的长度5 j; m; a1 p% p$ I; g# A
]
* w) l- L- L% H# i8 z. X: t- s, u' d4 a) R7 O
;;setup procedure3 p' l- W4 G0 K( B' b0 d# x. \( @1 T
% k- @7 ~" b6 H: A
to setup/ n2 r& G% w2 J! n, L9 O& B
' E# p5 l( ]3 l
ca

/ W: Z* t/ f% N' f: J8 ~' `& N
7 z8 h' ]( E9 [) o8 E$ n+ rinitialize-settings
  l% `& K& Q# L! Q2 s; Z8 p
" \- {4 R+ T7 v" V3 \& A7 g) U0 A
crt people [setup-turtles]
0 U  e8 }$ w, M
: J. u# P& Y- k3 X, Z
reset-timer
3 e; \6 q* r; x" S+ I8 o6 e

) Y, g" K# |' K' Xpoll-class
9 d9 T& O0 E$ b& T

$ h$ r, P" l2 _+ y, i+ a. Y* |) esetup-plots

9 P- ^- `# `, _% Z& K
1 y% B$ v. n9 m% q" y2 Odo-plots
( y$ U! C" C! j: _. K# S
end% b) z/ J; I! x4 n- |& ~
6 g1 N6 G+ E$ z, E9 c
to initialize-settings
3 K9 L+ y6 \: j5 F5 H
; r- D2 N2 `# Wset global-reputation-list []
" M( P0 {7 `2 z9 d, G8 ]! j; R

# d' Y. I7 i9 g& m" H/ Eset credibility-list n-values people [0.5]
: L$ n1 e, l) \* m
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set honest-service 0
, g9 A; K$ u" S# ~4 z
( Z6 u0 ]2 M+ O  p
set unhonest-service 0

" B* `% y" P0 ]5 Q/ q  _
' S! j9 L# J6 P" A6 W- X) O& oset oscillation 0
! F7 w% r8 R; o* p5 z! X

6 ?8 A# B% {/ H) t/ e. Pset rand-dynamic 0

, r: C! v+ y/ {, \( qend
$ D9 w; ~* P1 i) U  a
% \' L. k( U. bto setup-turtles
, Q) J7 c9 R$ w  i: ^8 Oset shape "person"7 y* x9 G4 l. @
setxy random-xcor random-ycor
3 i) ~8 ~4 {, Eset trade-record-one []0 d3 S8 q. |& k3 e

: o; }3 [+ B" f/ n$ l, F, R: Kset trade-record-all n-values people [(list (? + 1) 0 0)]
. t1 d/ e% m1 B7 w. Y9 X+ U

' L# ?# e: G% u* W( |! c4 J- ~set trade-record-current []
# w5 g: e0 Z. `; S" nset credibility-receive []6 S, N2 Y9 G8 @# W* ^# ]2 c
set local-reputation 0.50 I5 \, n$ w5 r  _
set neighbor-total 0  b, w, `9 b& r7 |2 T9 c
set trade-times-total 0; @5 J5 k" g- _. r6 K
set trade-money-total 0; r# H* c9 W" [8 N3 k6 i
set customer nobody' S( }. u: [* A3 i3 U. M
set credibility-all n-values people [creat-credibility]
" h; Z* z* o8 O" b0 k, X7 j, w6 }% U4 pset credibility n-values people [-1]
( Y8 P, T! Y( Mget-color% V! U- e) m( O9 q5 M5 [+ B

, h1 _5 A6 ^% Vend
0 \7 d6 e0 U6 o* A! ]. w- y4 K6 \/ d5 X7 J
to-report creat-credibility
1 _0 X# ?# `) T: Creport n-values people [0.5]9 I! M7 i/ H! x; G' V9 Q* m
end
' s  X7 T- Z: @2 L: j' W! l
$ M; H8 @- y% cto setup-plots
3 T5 @- r  m  N: d/ x, B( H/ r0 m+ n9 Y$ e2 V3 E  s& ^- G. T1 U
set xmax 30

% F4 O  K; u4 i1 O* e. D+ k* M  ?  G
set ymax 1.0
. D& O% C7 {0 u9 p; U# C/ p
4 V) A3 y) e% s  ~0 ?" V
clear-all-plots

+ p& @3 h: c5 ^5 L4 y/ M* @4 P! d" V# [7 w. \: J" o. N- p
setup-plot1

' C+ O/ J. T# k, b4 z% [9 T2 |" |  R4 E/ w. a
setup-plot2
8 k; o! w: j2 \% f" @4 p" h$ |% Q
, F% @" y7 y" g/ Y, N: R5 _
setup-plot3
+ W0 I: v8 m$ M5 g; v+ z4 Q
end
3 H( w7 _) b. m0 \
' D& j8 w2 X' H7 C" O, p;;run time procedures
5 }: @. ^3 {" j% i1 o% g+ `9 k" T
" H. o+ q, \2 A4 ~& H; @* Y# }3 }% b: y" yto go  Y& a/ H3 @9 ]
( |1 p% b! l+ K2 m7 m9 H4 t
ask turtles [do-business]

  M3 {% Z- w  F8 F! G8 hend
+ V( T% ?$ J/ y: Z" O7 s9 ]1 k6 O0 N/ z( B
to do-business
1 }) L- K* ^& x0 _
9 \/ K' F4 q' j- c$ M  ^/ M, T9 G
' D. c% Y2 C9 }1 g1 I
rt random 360

! R7 n" E2 _5 f) j1 Y& M0 j0 P7 a8 O$ h" k
fd 1

0 L+ \0 G) v8 M) _! F% ?9 v5 T8 y. k/ i
ifelse(other turtles-here != nobody)[
  p9 y; g7 X2 S# Z5 i
7 y% p1 }& L* v' J! @
set customer one-of other turtles-here

- O6 m) ?5 R' c+ b' W9 e4 a! X
) b) w8 h1 }1 K! b. M;; set [customer] of customer myself
1 v( `- I+ \/ i1 M: ~9 R& n

3 A8 k8 s5 D; s" p' q- fset [trade-record-one] of self item (([who] of customer) - 1)
" H9 T( M6 i0 U: Y4 g/ v[trade-record-all]of self
& J% ~1 S- x- [+ s  c  };;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 K6 M! Z( e& Z4 M0 T5 z

/ V- P. Z6 S; X/ p! [set [trade-record-one] of customer item (([who] of self) - 1)
1 _, y8 m5 j/ o  [[trade-record-all]of customer

, I6 P/ `: F& c' a
$ l' {/ L* X# m. fset [trade-record-one-len] of self length [trade-record-one] of self
% c& n/ U5 K1 l& X5 I* t

$ S( P- a3 n, C; Mset trade-record-current( list (timer) (random money-upper-limit))

6 q" W5 q" h) h! Q" O7 k, [8 q, W* ]; F, C
ask self [do-trust]
1 L" S1 p# B2 P/ v" i;;
先求ij的信任度
. w  B8 I2 V& E; z0 r1 W/ w
4 G% e) r9 {/ p4 f# g+ Nif ([trust-ok] of self)9 R5 ]1 c. ]' W
;;
根据ij的信任度来决定是否与j进行交易[
3 E$ d/ Z- y- b2 A. V5 G: Sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" ?+ y) j  w4 \0 K! e! j2 n
& K' a% Y$ m" ^9 s8 h0 w' {[

. j0 J$ v- {+ a$ {( {9 ?+ r; E8 v& K4 ~/ N  x8 `" ]# z$ z' A7 u- O
do-trade
# L& S2 M8 ?* y
9 L" A# Z; f# C0 M7 J
update-credibility-ijl
0 t0 \, {" C: M/ x2 T* K
) r" w& e5 ~& [  E( w* m( z
update-credibility-list$ T9 |, t; C. @- y7 Z* e) H

0 w* u" ?' v) o
9 H9 z( i, v( A/ l8 y1 u3 ?update-global-reputation-list
  n3 G2 o7 W1 [/ K8 T, P
9 A9 e/ O1 V# _
poll-class

! U! o& q, E! [+ X2 f7 y8 g% ~5 k, A! ]7 r# [) E' Q, i
get-color
3 Z$ N: D3 W. y% \

/ o% ]8 M: d% B! C]]$ h5 I: N! |7 i
# s/ r/ T  ^& l; Y% e. z1 s8 i
;;
如果所得的信任度满足条件,则进行交易
/ r1 U* e9 e4 o; c! S- A8 G/ G0 ~7 @
[

/ y# t; @1 T/ I3 U! [& M
; R+ f. {- u: U, Y) @" u0 ert random 360
% D. N9 G9 o- C; P8 i" h) f# O; x& r

2 L# J7 a' k1 `7 M8 V! y: ]fd 1
" T" Q# A5 h. k+ d
: f; `) Q1 U% M" r+ l& c3 T5 H' X  N5 i
]

& W/ r2 C% z7 e* q$ R' a4 v
# c+ v: t/ }! j  j6 pend

1 w# Q" U$ W# Z* g. V7 {4 N/ {
8 Q+ q& i2 l7 @0 ]& b9 E' ]to do-trust 0 Z3 \7 |6 A( F
set trust-ok False
* ]; U8 i( `+ ?0 E6 V# ?4 g1 T8 b& S" o4 R  ]5 @+ c: {

4 k0 |3 M4 D, @. F. j& tlet max-trade-times 0+ X8 u2 ?3 d1 S* t
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 a8 p, F. [/ d' q- A2 y, O: blet max-trade-money 0
2 d' D" n( q3 l, F/ ]5 u- kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! \' Q0 h0 F- }let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" ^3 s3 n) O, C; }2 c  _
* K. w! D- a) A: S0 x
, ^$ Y$ Z; D) Q( R4 l3 l6 P
get-global-proportion+ m. a5 A: Y; k# x  t* Z8 x
let trust-value
4 Z6 U/ b  g' z7 I* Q# g9 Vlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

% H4 N( F0 t6 L/ g9 Xif(trust-value > trade-trust-value)
/ F  w7 |# |# k4 V3 k. t[set trust-ok true]
8 p0 p; n# A% W/ F% Wend- ~  U, D2 q' I) e7 L; ]* @
  a; S0 u5 N( Q' P: p7 t9 z
to get-global-proportion. _' `9 H% y, s" W2 U
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* U0 ^3 S6 f2 |# m5 Q! h. C[set global-proportion 0]
% w) \5 F3 t* B7 Q. @/ a[let i 0
$ V: W* |4 h' Llet sum-money 0& D' J# {; t8 |9 E* {
while[ i < people]" M; D+ ]# \9 x
[
& y% c7 q7 _( V" u' q& o7 Oif( length (item i4 l; U) O% q: Y3 z: c. O8 k5 U
[trade-record-all] of customer) > 3 )
+ e% I2 E4 k0 |! W3 l/ ~# f4 l1 n7 [
[6 _- p* l; Y. Y, O
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 `, ^& Y3 `' r1 R5 d8 z1 ?]" Q! t* I( Y7 x9 k9 z5 [6 J% q
]
4 ^5 T6 b0 @6 |/ c2 K2 b( Plet j 0* O- i  S3 L5 K% _. H' b! l! A
let note 0: q- B0 J3 T8 {& T
while[ j < people]
; P. U* T- U4 m1 h6 X  V3 C, ^9 y& @[* \3 T+ j6 I! W
if( length (item i
0 l' p2 @2 [% f' s[trade-record-all] of customer) > 3 )
, h! W; D1 m1 F" F+ V, f
[
- u. ]8 p* ~- t; i! o% Kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% r7 n. M3 Q& G7 h" u2 \4 S
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ ?6 ]. {# {4 K( P( q/ h6 s0 @3 U[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) K0 Y* l& q6 Z]6 r( R" h$ K4 d
]' o* {2 |/ j8 K( T; }: d
set global-proportion note
4 m* Y: T, f, O8 _% c. [# `. p]
  M; Q! p+ g3 c7 H" }7 l3 M' a5 Xend6 o$ F: n' j; }% W3 B' {6 ^
' F5 H; _" j: r% f$ l5 B+ Q" W
to do-trade8 M  F& @9 z+ e% \) m1 S9 _
;;
这个过程实际上是给双方作出评价的过程
0 z  R6 M" i0 g1 R; Y# }/ K) Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 R' U% N0 Y8 e  wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; n  u$ K; _; h: @set trade-record-current lput(timer) trade-record-current- ~1 m1 A, L% ^- H7 P3 d* i4 P
;;
评价时间
1 S$ F' _5 f( }$ \ask myself [5 i5 q: g) r, N0 [- n) Z* r
update-local-reputation! N( x8 d# |  e; n
set trade-record-current lput([local-reputation] of myself) trade-record-current/ d2 B  f% p+ ]$ D! {
]
- A# h4 j, `3 W. y3 l( K& m; y$ Xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 ~3 ]  ^7 E2 p6 I- G7 Q* s0 l
;;
将此次交易的记录加入到trade-record-one4 ~8 ~. s  c+ Q# M/ p! ]4 N
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 U' {( U7 Y) D8 K$ r" ?
let note (item 2 trade-record-current )- F) n$ D, M' c4 Q; f! A0 F
set trade-record-current9 |  O* o2 J9 a3 {9 H
(replace-item 2 trade-record-current (item 3 trade-record-current))

( O' W1 h7 C. N$ @3 Yset trade-record-current
/ K. j1 F6 B% j" a5 \8 i- e" d(replace-item 3 trade-record-current note)
4 C3 m* x4 f( Q  S/ |- R" {  e  ?( L) h# e- Q- P
- O6 o: I: I+ j7 N8 I3 `9 ^
ask customer [
" f+ w* K) ^, ~4 g7 iupdate-local-reputation  |  d* M" q7 Y( d7 u" x$ N) P
set trade-record-current6 A8 e) j0 r' [& L6 m
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" `# ^) Y- i- C]
  o. Z: T% K5 j3 O0 i
# q! X$ J! V( f6 o+ b

# q" l0 v- V3 m! yset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  t! x: K* d& y+ U% f# n  p
9 o- }+ h, D7 H) A
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 G: e2 Y2 j! \& ?6 @# I. C
;;
将此次交易的记录加入到customertrade-record-all
6 Q  G4 R3 B: W0 ~1 G5 L! C" H7 Vend
- e* O/ b* T0 v8 {8 |
; U' n, ^3 O1 N# O+ ~6 u* y, oto update-local-reputation, m  v, \1 c4 w% s, }
set [trade-record-one-len] of myself length [trade-record-one] of myself  r3 c/ ]/ I- [7 J4 e* y
4 ~" z5 _! Z( F, T) Y4 q
  Y5 v4 l: K5 x8 k! T5 X4 m
;;if [trade-record-one-len] of myself > 3
/ q7 P" K) W$ B4 [
update-neighbor-total
8 ]: j! o0 l& }& Y: `/ f. e" j* E: j;;
更新邻居节点的数目,在此进行$ K2 c4 E1 P+ X" R: {
let i 35 ]  ^& ~: ~+ e' M, u! y" Y# R
let sum-time 0
: B6 o$ p: L. m; ewhile[i < [trade-record-one-len] of myself]  o" b# C5 L2 B( l0 V! t5 I
[9 u  U: M3 @! f' p' X) A
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 I% i0 e- n; Pset i: U+ X2 o2 Z( g2 |% x8 X0 D
( i + 1)

! m2 X8 v) j. g% p6 r]& m' Y/ b9 j* U  A
let j 3
% D" U* Q& s) Y; G' P: ~. Zlet sum-money 0( g! A7 ?  x# j9 H4 f6 K
while[j < [trade-record-one-len] of myself]
3 ^9 ?7 b0 ^8 d[
" v( U# K4 }/ U$ w& B: g0 ~, h' aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)' ^; T# j/ f, t. m; a6 ^6 T  y
set j" p6 p% o4 l1 W6 g1 c) L" n
( j + 1)
$ e5 ?& T1 i/ W/ o
]
( F" B. I- E$ d% K' z7 Glet k 3
5 e0 N5 J9 b* d; Alet power 0% W  m+ _3 S+ _5 j
let local 0( i0 V2 |% O* W& O8 p5 U+ o
while [k <[trade-record-one-len] of myself]
$ P. `9 c( ~" `# n* J( H# z  y# x[
5 |* U' D* o" A: x# f& c4 n5 |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) $ Y, K" n. ~4 Q) ]/ S$ \
set k (k + 1)1 \0 r, K7 U6 ?* Y" p, a; X7 U
]
" O& l' U. R0 B! O  t: T+ r+ Oset [local-reputation] of myself (local)
' [5 U- n* w1 I9 `4 nend& g3 b3 W1 b" u7 h, ~
  S. E2 _' q0 F/ U) y/ P( `# a
to update-neighbor-total5 X; H' [: }& A; j7 n# X6 N1 O$ F5 ]- w

- J4 p9 S8 ?" v, s  M4 o9 p: Dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. b0 a! P- g+ B1 h' `  z% A: ?; r, H# _& Z' r' Y

5 T6 ]7 `. p! z8 p1 |5 aend8 J7 @# A# t! j  Z1 y# ^
8 `$ Y0 }4 A# L0 d; o
to update-credibility-ijl
* D& ?6 b! _$ s' m6 x6 @7 h2 `, Q- V1 J* Z9 v0 ~
;;
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。
$ P$ Z9 j# o/ [; `/ e, {" W7 K5 K. ylet l 04 J3 O: L0 v6 w7 [6 |
while[ l < people ]
) N' z8 y* O* h/ Q6 L;;
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
( m. ^) R' n. s3 L4 D9 N' l2 @[
5 {5 V& v7 p0 _/ q3 T* \$ Ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 t% @2 c6 n6 J+ R; T9 w
if (trade-record-one-j-l-len > 3)- ~  k0 |% x% b$ E2 M) B
[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: O5 h; f" b3 @* |& S5 P  K3 F) `
let i 3# ~9 m7 G' L! a) R
let sum-time 0% O5 l0 O7 [5 H* p6 ~9 [! E& D) j5 F, L. x
while[i < trade-record-one-len]  e1 E  q# }1 |6 T) v1 @1 c
[
% x, C( R7 j& ]& S( r% _set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ `5 b) S4 B2 @# |
set i  n" Q" T& }7 o" u9 d) c+ s' R
( i + 1)

8 ?: F+ W, L; Q( o3 w" b% M]7 `; K+ m- X4 P9 q: A2 M  u! C
let credibility-i-j-l 0
) [$ u( Z3 c9 b4 R$ q0 G;;i
评价(jjl的评价)
: ^/ i) n# q% s6 nlet j 3) N( R; `: m5 {9 C- \
let k 4
. q: d6 w/ g7 p! ewhile[j < trade-record-one-len]7 i, W- O6 a- U+ f& ]* l
[
/ J4 ?( u" ?. `% Q3 b1 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+ [5 @1 m, A2 ?5 B% 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)
2 \3 [6 R+ i6 Z' y  k4 {set j! \$ }; B7 N( Z
( j + 1)
  w4 `0 }8 t( x
]
6 p5 U0 B+ d0 I7 H* `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 ))
( p! b( L. [8 D
! s5 _9 ~, ^. V) ^" C2 N! [

2 q5 k9 t, `+ |let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 ?# {0 e& f6 v: I
;;
及时更新il的评价质量的评价
2 T4 N4 i& ~* \* t7 ]5 f% v3 Tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 p  Y( o- J6 o5 p9 m2 |
set l (l + 1)$ T+ k8 h2 d, c% Z$ q
]
2 T% w, w8 n* m4 B7 W# T2 K( f& Kend# c+ x1 E9 T9 y

$ I  F) ~- @) K/ v& lto update-credibility-list  w& E9 n8 Y! G8 N6 ?
let i 0
' b. \6 S& a6 h6 L% awhile[i < people]
7 P8 f, [# }2 Z[
* \3 o1 z1 n: ]/ L- f) a2 c' _( C( plet j 0. ?( d- o5 v7 Q/ R' G0 x
let note 0
- S2 C/ D& {& f* d# L$ y/ Q9 vlet k 0
* [' n8 {$ U( x  R- S2 b; S;;
计作出过评价的邻居节点的数目7 @  _  ?( @0 H) G4 s
while[j < people]7 E9 D& b. Z) c+ M
[
1 Q* L  A6 f1 L  g: t" [if (item j( [credibility] of turtle (i + 1)) != -1)
% [$ ?0 _6 y: {- N  p;;
判断是否给本turtle的评价质量做出过评价的节点8 j( {, h5 Z% Z  Q$ O
[set note (note + item j ([credibility]of turtle (i + 1)))
9 R" v7 ~. y7 u$ c0 t) G1 y;;*(exp (-(people - 2)))/(people - 2))]
6 t8 c1 H) g$ }/ s: j% m
set k (k + 1): a$ z( g/ n% B- v' u% r# f
]
) |% q8 m9 l. P, A: X: d4 g  xset j (j + 1)- y4 B$ I; Z+ }6 |0 ?- |3 ^
]8 f# n/ y6 b8 Y
set note (note *(exp (- (1 / k)))/ k)
! ~7 g2 E5 f* H+ n- s& Zset credibility-list (replace-item i credibility-list note)/ Q1 ~% A4 Z( v3 p4 r2 `7 w6 i
set i (i + 1)
- b7 m+ h# o6 h$ D) Z, ^0 y]# ]- m# b: S( l6 [7 L
end, n2 N% q# M* @4 j

9 ~$ [6 d) a9 L% W  ~: G2 wto update-global-reputation-list; n  A8 n9 |7 B
let j 0
3 B( W1 P9 H: `- H: s* Z, l. {! rwhile[j < people]
2 f# I7 T( {$ R: T1 i1 [/ v# Y[$ t7 F6 |6 R3 }* v/ e! `; C3 W" ?
let new 05 F; h' a" _5 g  G8 ~: M
;;
暂存新的一个全局声誉( e: B2 ~" e3 |1 i* ]
let i 04 H* i' q' J" I# H
let sum-money 0/ _. i; c1 I: `. {& ^( }2 i* r
let credibility-money 0, H1 ^$ z8 m  x: ^7 J- P
while [i < people]
7 L- \$ ^  u9 D5 [4 b) Y9 M[
: M4 `- b6 C0 W. q+ Lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# d* h- `" O  g5 F; iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- q) Q4 V  E: q+ k" iset i (i + 1)7 I3 l* [& B2 r; I  d1 D7 K
]
- T7 `- h3 M7 ?let k 0, k: A2 y& k" s4 |! I3 {" o
let new1 0
+ d5 N! F- O. {4 B' p$ P. nwhile [k < people]! Z0 s5 b/ Q; l  o3 O" \
[. u+ d1 Q. d& A2 Y4 p1 Z( k
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)$ {# y- d9 Z4 Y9 x: O
set k (k + 1)) {. `+ V- U& ]& h* P3 C
]
/ S6 R& }: P4 rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 q& J$ d) i; M' Eset global-reputation-list (replace-item j global-reputation-list new)8 I6 Y1 Q8 t" d! H; a
set j (j + 1)
* k$ ]* j2 g+ B2 [6 R8 ~/ t2 }], ~$ I. V4 j8 T$ ?0 A+ {
end6 C1 N/ Z. \' d" ~4 E1 K

0 b2 G9 w- b8 Q9 r
2 n, G+ H7 m; K' ~2 Q' g  o+ X& L* \+ i; ?# t% W& u4 F
to get-color8 x* Z  X: {, F3 k2 f5 _$ B
1 q1 n: ~! `0 G4 Z
set color blue

+ Y( K9 r% I$ q: x& iend$ D. C( e/ K  O, m4 ]5 O: T
. O' N! j. K3 C/ H) Z
to poll-class
4 s& U' O1 q; L- J- [6 L4 h  vend- C; u2 R( @+ s0 p$ k4 j: h# b

& b. H7 E% |) x/ fto setup-plot1
6 c, M7 D" ]( @2 M0 z0 g9 v3 z) G- T( n0 e1 h( g) t  R
set-current-plot "Trends-of-Local-reputation"

; _! a  h+ O, G. \
3 K! I  q% k7 ]set-plot-x-range 0 xmax
) O+ U: T) K7 v! v! ]! H" I2 C
/ y/ _  v' z# x- q7 n* [
set-plot-y-range 0.0 ymax
. s6 H  v# G& w& N1 T
end
# _5 V2 F# ~( v  m( e& Y, q$ o' Q9 t0 m, ]$ x  c
to setup-plot2. B' I; ?$ J. b) G7 m& }" _

- b" F# j& w# _set-current-plot "Trends-of-global-reputation"
: U% a# ~5 J) R7 _" p+ R) f

; S7 a+ Q$ h0 \# W" O( _9 \0 pset-plot-x-range 0 xmax

0 I7 ]( I/ L$ m$ V3 P9 s/ ~* Q' P
set-plot-y-range 0.0 ymax
, _, v  i. q- C% U, J
end
/ |1 @: H% n" w4 v# [4 g9 N0 U8 Y' Z3 O; m- k  ~3 V0 n; H$ C
to setup-plot3& e: `3 F8 q! |* P1 h; `3 G' Z
1 w9 T* R8 i/ T6 q0 i
set-current-plot "Trends-of-credibility"

; ^+ ~+ f( b5 t8 U9 X% n, E/ N; m' q/ G1 }/ Q6 @2 z
set-plot-x-range 0 xmax
7 Q- [4 X! Y& l, G
; h' e# G4 \" T, r9 ^, {& O# B
set-plot-y-range 0.0 ymax
. q- N+ J4 V( s$ D+ O1 e$ j
end8 n3 B6 E6 T6 d( j! Q* }2 _. q

) w4 h1 g9 K% _  P1 y. U* Oto do-plots
$ |  x2 q: H1 D3 A# vset-current-plot "Trends-of-Local-reputation"
, j) A8 M, S" hset-current-plot-pen "Honest service"  Y' ~4 G# x+ P# a
end
+ F) J7 X% n0 n$ V1 d  N% N% @: J0 T7 p+ K, ^$ ]3 k% N8 P
[ 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.! T9 [. m4 A2 C

5 ?) \* @" I& K+ H/ k7 Q1 d9 ?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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