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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:2 z4 p8 G9 Z4 a; e! ?( B( z
to do-business
- _/ P; f" i6 u6 h  v rt random 3602 w! q9 c- W. r
fd 1% L- F- _6 F% S
ifelse(other turtles-here != nobody)[
6 |. ~! Y7 n" @$ Y9 H   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.) C# I7 n7 x& `5 ?# R" N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; A% {7 X* }! X- J
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. O! N# N4 E/ a% M: g( C+ W' Y) K4 F7 ^2 t
   set [trade-record-one-len] of self length [trade-record-one] of self  C$ m' S% o4 c1 J- X0 X
   set trade-record-current( list (timer) (random money-upper-limit))1 h5 F" Z; h1 P: _8 n
# w: \$ D5 D/ f% c, t
问题的提示如下:
2 j4 ^. O4 d; U4 f- C+ m
* l( v: ~6 L& I7 Uerror while turtle 50 running OF in procedure DO-BUSINESS
1 _& d! o5 Z; I$ ^( F  called by procedure GO
- L9 l+ i/ Y# eOF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ Q: U& E8 V  k$ J
(halted running of go)% F  A4 \) Z, r& ?1 |3 p

! ]1 w8 x; l+ F  R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~~
3 `5 S* J) Q+ K" M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
. h' }1 T: \0 Eglobals[
: ^+ F; D8 \9 `. W8 @* N  Xxmax
5 J3 R' r+ o- Z7 H* @ymax
2 z1 J+ P2 U! [" U" u. Hglobal-reputation-list
5 J- `6 B. K) m& G$ Y: }: U$ O
" C' f+ c( V# s1 ]; i;;
每一个turtle的全局声誉都存在此LIST
% U& e( V: N6 i/ j9 m/ E: Acredibility-list$ D7 K5 a. l# U' k: v
;;
每一个turtle的评价可信度, Z! r" k5 m; S6 c4 d( p
honest-service3 R: F; \% u* D! G9 C
unhonest-service
, A1 N: F6 [; B" I1 noscillation: J! e+ o& T' D9 R1 w- g
rand-dynamic2 `0 ]) i( P" J4 N) _
]& }0 B9 q, ^9 c; {! U$ o

& `" `0 _$ f( L/ `. I1 h& @6 p$ xturtles-own[
! i, U  S- H6 s& h/ z' Strade-record-all
% E) v3 I/ t& P! N: c- [. [;;a list of lists,
trade-record-one组成
% O! f4 k& t* `( p: V# mtrade-record-one
# t' a, J# |* W& k4 @* c4 a( h;;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 `* j; o8 ^8 N, d/ K4 w' u: m. l# 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]]  J! m! A; I1 `' J. ^7 K9 K- j$ J
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]
. L* s1 _5 L8 M4 G: O( mcredibility-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 _7 _5 u2 j4 ~! l
neighbor-total4 {( X, n# e2 u7 |
;;
记录该turtle的邻居节点的数目. i% q* W" U7 J. n+ K
trade-time  I1 y5 ^. u* i: _# s- ^$ C/ ?
;;
当前发生交易的turtle的交易时间
8 P5 v9 g3 j! A2 P$ uappraise-give
+ Y  ?) \( L0 R2 K$ `" R% t1 U;;
当前发生交易时给出的评价
, S% G& I9 f! a5 z& Bappraise-receive* H& B  G9 q+ |8 [4 |7 S
;;
当前发生交易时收到的评价
) H, u. C! T+ m) lappraise-time
9 {6 g4 h* t. P;;
当前发生交易时的评价时间
2 L3 a; n" Y, V: tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉8 C8 V8 F7 t& d$ Z+ ^9 W2 D
trade-times-total
) j& X+ L1 \6 r! X% V;;
与当前turtle的交易总次数
3 q/ m4 l& l+ _' k2 o5 `$ V( c- o  Ttrade-money-total
- |) Q' C0 P( q: M/ [2 G;;
与当前turtle的交易总金额$ p) h6 E$ m- D9 u1 g
local-reputation6 j! Z+ ^& D. o1 d) s
global-reputation% t. h7 {: P! A4 \6 e# t% ~
credibility- ]* b% N4 E/ V: @
;;
评价可信度,每次交易后都需要更新
& E- _& B4 x; w% x/ R3 j. I) acredibility-all
/ ]* @* p2 T7 Z6 |' \;;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2 I; w+ V8 W( S, U
4 n. t2 e* w. C9 o% |- y' m
;;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+ p* t2 g( n+ }; y' ]
credibility-one; g6 b$ |& L( Q# l  i( U6 X
;;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
! t. Q" h5 D3 W( fglobal-proportion
/ }2 r3 s  e1 Ccustomer
5 V3 s8 Z1 C- u! lcustomer-no
  j- {1 k9 r  d- M3 @8 Y# `trust-ok. c3 {5 A1 K5 a
trade-record-one-len;;trade-record-one的长度
' O# N( Y! \( ~2 S, s' o( Q. d]3 t- t; f* K+ k. j6 _* K

  ~9 ~4 Z0 u* o& J' x;;setup procedure
/ R8 O. P2 P$ w- V7 O5 C9 a" J6 ~; ]( r. w* G
to setup+ N+ |) S. A" j* F  P% ^
6 Y: Y9 V- w. U) r
ca
- c1 ~* w7 `' P
9 V7 D' [8 j9 u7 g9 A9 U
initialize-settings
3 O' A( q2 Z$ V) t5 E7 ^
! o' s$ ~% x# [, D
crt people [setup-turtles]

  y" W, Y. i+ X9 s, L1 Q; `+ S/ \4 t4 f; A- u  I, \3 W2 o8 K( [
reset-timer
& `% v, U6 p. h5 l$ m* |

8 y0 {8 H* P. R% W* fpoll-class
" y3 A& `+ R) O! t: l3 O
$ Q0 R8 w/ ^: ~2 l0 z7 ~9 c
setup-plots
- X: \- T6 l: v2 |0 E% ^

& j) }6 W6 Y2 w' zdo-plots
  e: e. I) V! L7 \
end
! t0 i/ K; X. {; R" U" U  F6 }) f$ O- L0 Z6 P3 F+ F6 _! V2 F
to initialize-settings
4 l) A% p  G- o4 j0 R5 v! ]5 o' d& Q! G- l9 {9 k0 e
set global-reputation-list []
3 ~8 _, y$ J7 M# ^2 [. k# ?" c

1 Z. i3 ~9 \+ `% k9 U) Pset credibility-list n-values people [0.5]

3 F) y# M6 e/ h1 G! Q9 T) Y
. z& w. H- ?3 n8 sset honest-service 0
: ]! z8 x  q) k4 e, g$ ?
9 w% B( t6 J1 o/ y) u% G
set unhonest-service 0
' F2 J: u; M: U

  |* M, j( e( |/ r* }set oscillation 0
! E- g! B. H8 [; w

0 X* |7 F" ~; C- ?" mset rand-dynamic 0

- N: Y1 u% w& M4 w0 u2 Eend  R1 \  E4 B+ H$ y

0 ?# O- Z* o( eto setup-turtles
5 J9 Q. g1 y7 l  j7 F4 ?set shape "person"
) G5 y# M+ D6 _' z3 h4 v- N' e" Wsetxy random-xcor random-ycor
- k, m/ o9 a& Aset trade-record-one []
! d, r% \1 ~2 P5 p* e: t- m

6 u& O/ [  l, bset trade-record-all n-values people [(list (? + 1) 0 0)]
% j) f- ?6 J  I. B6 C- E+ @* \
* a) n; g; Y& T& ]) f
set trade-record-current []
& N- x1 q9 |/ E( Jset credibility-receive []6 V/ ~* ]6 k) x" a
set local-reputation 0.5% G2 C9 Y8 K9 t, l9 [- |4 T1 ]
set neighbor-total 09 L, x' [7 R; r( W$ A
set trade-times-total 0- l+ z+ z4 j7 o/ Z3 H3 h6 A8 X$ ?
set trade-money-total 0
6 K) n( R) s$ |# l' c* m* ^! `/ k) e; Mset customer nobody+ n1 l# X7 G, o- I3 a
set credibility-all n-values people [creat-credibility]2 N. X$ U+ R; C, C! t7 R- \( D
set credibility n-values people [-1]
7 {# r' X/ \5 x- G  h% ?# \/ {: {get-color. N- a& k6 a! Q) ?& X
9 |, B* ~/ v+ f+ W+ j5 D" F
end# K* F/ k: A# P! o
1 ?! }" `8 z/ [8 i$ ]
to-report creat-credibility
8 m* m! ^! c/ T) Nreport n-values people [0.5]6 O6 N1 D3 _1 l# `9 t' }
end
6 u- A% }0 V, U9 T% \
* m9 n) a. T9 yto setup-plots
9 M" v- _. u- D' {- N. d; E+ T
3 N3 J5 ]+ _" X8 ]" X7 l$ eset xmax 30

1 [% V# f7 E( \( H- l" J+ Y8 F6 I: e
set ymax 1.0

2 p- [1 N. z7 l
1 L* [: u) P* Y) A6 Y3 |0 t7 Eclear-all-plots

7 i5 w0 P3 y  ~2 B0 z. |0 H4 G+ w; G. K7 E7 S  O
setup-plot1

% O$ u( w6 o# `1 m5 S
! y0 E; R) @) [, L1 ~3 ksetup-plot2
9 I# X# n2 a* ]9 b

4 u, L, ]' J! ?% isetup-plot3

! i6 ]2 T# u( S* K* `' iend" t- u5 P# l. @$ R/ D
9 h6 v. k4 V! ]4 A- f
;;run time procedures) b' @9 J# [; k% A3 O* s, `/ u) r
4 C$ |% M2 K0 k: h9 y/ I
to go2 D! R5 T" M* |7 A# a
, D! j" P, b9 }) s8 D2 ]3 s8 l3 {4 v
ask turtles [do-business]
! u$ r/ J5 T; w7 R/ q
end& G6 _/ f) T9 z& D- F- u

- [# |+ d" h6 fto do-business & ~+ {" J$ [' h' ~& x; w

: n( \; ~) `7 v( n! ?, _
0 A& B" M1 x, }  frt random 360

8 T% E6 L: E$ x' O1 R  j# x
7 Y5 x# l6 Q2 B8 Cfd 1

  E" y8 m$ H! w6 `+ B2 A
6 e( P  O6 e! D) Kifelse(other turtles-here != nobody)[

& Q" H$ h& v3 k9 H' g; C2 d, C9 q/ R
set customer one-of other turtles-here

! M' A; ^/ X4 c/ B3 H( N- O7 Q) K. \  |9 C
;; set [customer] of customer myself
  x( g+ T" ?6 [- O+ r

( E) y. S) ^; q6 w$ A% L3 zset [trade-record-one] of self item (([who] of customer) - 1)
$ k: `9 m8 u5 i2 ~8 k# ?: }( x9 ~[trade-record-all]of self: v; q/ h& H) V
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& d* c' V0 g% w7 j
4 c$ l% q. k$ c1 W# s2 ~7 N
set [trade-record-one] of customer item (([who] of self) - 1)) I4 X& h7 J6 L6 Y8 X% s
[trade-record-all]of customer
. u& g; W6 q( y0 }7 A
# V) ~1 o3 a: `' @# ^* |
set [trade-record-one-len] of self length [trade-record-one] of self

  I& i5 N% [& S, d+ M8 [7 N6 y9 G2 s
set trade-record-current( list (timer) (random money-upper-limit))

+ G0 _( z- T+ Q
8 y; J+ J3 @" |4 y! task self [do-trust]( A5 Z* o! U; V6 |0 _' {
;;
先求ij的信任度
( G3 V/ t# Z1 g, d
3 |6 S8 g1 d$ A1 ^8 q% Rif ([trust-ok] of self)& N4 L. a6 p0 l5 |& B9 r: B/ A: ]
;;
根据ij的信任度来决定是否与j进行交易[
$ i4 \9 f! @0 S' H2 {; @ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ d) u1 u6 |1 H7 j& @" X. `- a( ~% p) C; C* c* w& b; @
[
0 i5 _. m( l* `! z- m* ^
9 l2 B/ K( A& r$ a1 L' l
do-trade
2 x! E4 D6 [7 u1 v; I
% }9 s/ i. t4 W+ T0 r: ?
update-credibility-ijl
$ ?# E  {  z' W7 K9 b, L7 Z; Q

- H+ C" ~/ K% W7 [5 _1 h; lupdate-credibility-list
: E1 ^3 b, n  d
8 Y1 q" z: A5 o
1 B7 j$ q6 u+ H, R- k
update-global-reputation-list

7 p/ ~3 U/ C& \% @! Y8 @( V3 U4 q8 G
! K+ K9 Z* k3 C0 ~" K- u8 Opoll-class
" f' s+ Q. v, ~$ g
. U0 a- Z1 \/ \  l" T( c) y  L& g) X  n% f
get-color
/ m& M) m- `$ y: s3 n

! k8 ~" N% d8 H+ K8 S5 D]]2 M$ F7 z# k; Z& K0 \; i

) N; U, w1 Y' ^  Y% I9 C, P4 G;;
如果所得的信任度满足条件,则进行交易
  h, e% T, L# p
: _! `+ S7 x3 I3 I5 i[
, q" Q; x  Q; v4 A1 i9 l7 D
5 w/ Z5 L: E3 m" s2 J
rt random 360

9 O( L& Y9 w3 a# Q2 s
, h: Y& @) }% ~! S1 C8 @, S5 ]fd 1

1 H! X/ O5 W* e, J( u
; O, y  q4 Y7 j' }]

7 a# K& e: h9 @% \5 ?
: O. n  c9 v6 J& o# vend
0 l- k# I# Q2 t+ n, I

. w* y! D9 D0 [) L6 b! yto do-trust 0 P  J) G. b3 t" V. F
set trust-ok False
# y* @! K+ q2 y" B' m/ y  j# D# p& D# s
9 I" P6 P$ O' D
let max-trade-times 0* H5 F( @; u$ R: E; a, S4 ^" `$ u- F. Z- q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 w7 \* ~; `+ z9 |5 Flet max-trade-money 0
# O0 u! D) l" \/ n3 m; Hforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ D" `2 c" w4 H# J
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 Q; p2 Y( L4 x9 c8 F" m: e4 ~" N/ L+ ~: r; u# J3 Z' d8 F

. D' F  c" R! h" k/ C7 Nget-global-proportion, K6 k+ Z* |* q
let trust-value
1 f6 l0 U( s; ]" G0 U: \local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

  c& Y6 P) `- X! ]3 V8 lif(trust-value > trade-trust-value)
; h" H% j% _9 p) l" L5 |[set trust-ok true]* z% C1 a5 g4 b5 i# B! |
end3 J/ `( @/ ?- w; ~
0 w% e+ X+ |" q- V+ |, B8 f8 `
to get-global-proportion; ]- C5 L) ?( r+ l( f- Z+ \
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 J! E7 q1 ?4 S$ Y0 B6 E, T[set global-proportion 0]
7 R# h# K+ p( h: C4 H9 x9 w9 |% Q[let i 0
; o* m: N! o5 o7 p) ]; y0 ?let sum-money 01 b6 [6 ]9 r" _1 a
while[ i < people]
: c7 y: ~" H; F4 b9 t8 L! Q( J[$ c% G8 m- X3 P: o
if( length (item i
3 Y+ F9 B! }  K2 D- ?[trade-record-all] of customer) > 3 )

/ Q5 S( D! C" `[
7 \" C9 r8 r3 k. G; bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 H5 e6 S7 R! _3 S  M
]
' p, c. d, \! ^5 _2 n]$ N% W1 a. b# ~0 R) @. b  W
let j 0
- O4 ]9 I3 Q( X6 x. H5 Jlet note 0: ^$ h& x8 p6 W6 J- q  W
while[ j < people]
' Q8 W6 d" U# h. G# M[
" h! r3 K! ~! z# F' kif( length (item i7 `0 k5 S; A( g" {
[trade-record-all] of customer) > 3 )

  m+ }8 k" T$ r; s9 O[$ w  p5 Y0 \7 u, V; e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ y( Z9 u% O( H2 }
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& Z% V( t4 {0 D* f
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 e: }$ F( p2 m& H6 J% }
]8 M0 L5 z3 @* N1 o$ z0 S! h
]
7 w, {& t. ?, g) h0 j! D/ X% Rset global-proportion note
( o! E/ V" x. i2 `]/ [) s. r5 m2 Q  f& F$ W
end6 B4 Q% a% X2 v* r+ ~) f. e2 E

) O+ ]. R+ W4 ?) y6 s$ eto do-trade9 E- ~2 k! e+ d5 I4 |' @; \4 p
;;
这个过程实际上是给双方作出评价的过程
, V5 D$ Y7 Y. z6 @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 k* v/ [6 `/ B! D$ E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 O3 B% {- a2 i$ j
set trade-record-current lput(timer) trade-record-current6 y- W7 j7 K4 `: Z) x
;;
评价时间
9 s5 w( O' J  W7 ~8 t$ n8 m) ~ask myself [7 w( p) L6 ?* j" U' N
update-local-reputation
3 g  Q/ x  C( T# nset trade-record-current lput([local-reputation] of myself) trade-record-current# [% v' v* I( }. [' s
]! g) l) e" E; }+ f1 ?) B+ `+ L
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 d5 f. c% C( v& a4 F
;;
将此次交易的记录加入到trade-record-one
$ |% a: H# p( `1 m+ |* U7 H7 c* Nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 q, M8 q9 q/ W- t
let note (item 2 trade-record-current )8 l6 L4 a, ]; J. U
set trade-record-current
7 }1 ?, r$ Y9 @- m  `  |(replace-item 2 trade-record-current (item 3 trade-record-current))
9 r9 W* R! w, e6 I1 ]# w
set trade-record-current: a" H  B6 t' u/ t) @  r5 a9 N
(replace-item 3 trade-record-current note)
# y" _2 H" V6 \8 Y/ p' I
( J0 A# w9 S* X4 E2 ^& i- m
7 A1 j3 u% \5 k6 [9 O4 N5 D
ask customer [. M& A+ t4 f5 Y8 X, A, k
update-local-reputation
0 X) F* P' d/ O: l' \" _) Rset trade-record-current
% v  X5 E0 @6 l5 c0 |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* s: _/ l; D6 `0 R6 `; g]" ]' [! K, S" I$ M  W

+ I% n/ h6 n# u5 b% k6 z7 S

2 d, Y" u9 M6 d; ]3 ~3 a9 X5 Gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" C5 r8 x6 ?$ i; H" l2 I3 z
# R6 K* ]: g$ I2 f9 j5 ^
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 w8 D9 l8 j8 z  \% _1 l
;;
将此次交易的记录加入到customertrade-record-all- S6 X1 _, J  d6 A9 I! b% i
end  q% _, `6 G6 k) l' j+ m
* q: l# _1 v& t8 M; G
to update-local-reputation
8 l2 P: L* B# p. h* c2 |) Hset [trade-record-one-len] of myself length [trade-record-one] of myself0 U8 v& s8 U% O

/ v3 @6 \# B/ l9 p/ c- g4 R6 A: T* k/ o5 {1 J5 y8 O) P' X; D" d4 ?
;;if [trade-record-one-len] of myself > 3

5 W/ J3 F+ v$ g% _1 g% Gupdate-neighbor-total7 R3 P1 d1 r1 ^7 h1 `& b
;;
更新邻居节点的数目,在此进行
. `: _' p1 T: K5 Olet i 3
! _5 e( t3 m) z$ Plet sum-time 0  N, h, f5 E; J$ u* m
while[i < [trade-record-one-len] of myself]
- W2 E) b: x( V- [[, B4 P% p- U. i# x# z$ z; b; u3 G
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  r- j6 n5 Z+ L5 l, Uset i
6 E9 o+ d0 W) d' T2 E( i + 1)

; w5 z" t: B5 B" P]2 Y4 |/ D$ e. b4 |; U! B9 {# Z
let j 3
8 V) r  N- f6 p0 x, ^let sum-money 0
  `7 {' w4 T* b6 T$ dwhile[j < [trade-record-one-len] of myself]- e' U9 k1 E  i
[) l$ U4 e! G% e" i5 h" d; F* u0 ~
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)* d1 I( |! A, W8 O6 R& e
set j6 l( Q: U' O6 r5 L4 l4 @
( j + 1)
6 n* M# ~9 X/ f/ b" C8 n7 e/ r
]# R5 d3 l  c  J
let k 3
+ h, U9 t' I! |$ Klet power 0
' N% F# x0 @: ^4 g5 ^( }9 [let local 0
! M9 F' P( ~. r& I% z/ P# twhile [k <[trade-record-one-len] of myself]
1 b& n; l( p) C& l3 p+ K7 J[/ x. i7 F9 ^" h  n5 W- l
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) & w! @' D% |% d6 C# ^7 d& Z
set k (k + 1)
1 B5 K3 q3 }3 U6 e8 U% Y]
- c5 g6 J, k, a- a; X0 [set [local-reputation] of myself (local)+ }) S& `. H" V
end1 ]; e$ q/ v$ {$ K- [  r4 n4 W. ?

% ]) a7 \0 g7 L8 z# uto update-neighbor-total2 C4 g/ ]' N/ w" A6 H1 C5 J

* a" p. C8 k7 X# |4 jif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% n, J/ t$ r2 r2 ~- n! R
, U% h, F" @, `, ?

  p" z+ H  I$ q. \end# C" Q/ r+ Q. {
. B( U7 ^4 r8 `) @; T1 G. e( d
to update-credibility-ijl
4 }+ `9 J. C& O3 H7 Z3 s
( ^. y& o$ F0 R2 c2 Q;;
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。8 `2 v( }+ [2 {
let l 0
5 u# D& g$ x9 e/ c# l5 }while[ l < people ]" k& X+ r; v1 C0 D7 n
;;
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
4 }, ?4 Z4 f& B[
3 ?0 o& m5 d; n1 Hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)* k7 H8 N! _9 C8 w  y
if (trade-record-one-j-l-len > 3)8 \& l; K9 L; N6 H& P
[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, O" I3 l- t9 O+ S
let i 3
, @0 k0 ~, |: rlet sum-time 0
2 L5 z3 t8 z5 ^* fwhile[i < trade-record-one-len], ]% G8 I$ ^% a, r% b
[. [& j5 O5 Z" T! ~" W- k, Y
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ r  a5 z) _  _, {
set i
) `0 p, `" Q, X' j7 E5 o2 L! x( i + 1)

4 u$ Q9 O  q6 M7 X2 }0 h& w]$ U' k/ z! W# [! G2 K8 I  x
let credibility-i-j-l 00 q7 z/ n) R5 u$ J6 v- x4 P5 e
;;i
评价(jjl的评价)
. C7 y6 V$ D1 b* z6 Z- o% {let j 3
/ L) R  R2 H( blet k 4- P3 |  Z: D1 ?' G9 G% z4 f
while[j < trade-record-one-len]6 d0 F0 z7 D$ C
[5 C8 M; X8 w* O$ k2 q1 o0 F
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3 J% q7 S. }% d0 g0 g0 |' @% t/ m
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)) F% R- v/ W8 j* `7 h
set j" F5 I9 i! Z$ E- ?1 N
( j + 1)

2 x+ V2 k5 E/ @& ~; M]4 A' g2 y8 f$ K" w. 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 ))
- R- _) o. g6 k/ I
% s0 T  t" L! ~$ I1 }& J% v
' C7 V! G/ ]" g3 ~" _1 i$ Z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ [4 I* f0 o, w( m: |5 a2 g;;
及时更新il的评价质量的评价1 }" {# u/ N& }/ z3 v
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ y2 z# {. K( S  m; L0 H0 l
set l (l + 1)) l" b# m+ H; h( o( z) ?
]
8 V1 K3 v( }; Q4 u; `end! N6 G) _, u& t- W3 B

# X/ K8 s. y" d; R) jto update-credibility-list; n$ r. B8 z) z$ z, W- {6 H
let i 06 |7 K6 Y" U, t4 A0 v. e
while[i < people]
0 F3 A% c  y1 |) ]* l. X' a[
, _  \" w* {* u6 K  Vlet j 0
5 W7 ]2 y# W$ y4 s! ]- P3 g6 clet note 09 U% \4 g6 Y  X* @4 ]8 [
let k 0
2 h5 A  s+ x" v, c+ |# x4 X  k;;
计作出过评价的邻居节点的数目+ I6 X/ b: F" U. D' I
while[j < people]9 f/ q3 @& q% M& y% W6 A
[
! q( B  l* f& D" T3 t: tif (item j( [credibility] of turtle (i + 1)) != -1); N5 x1 ^! n2 T( I5 I
;;
判断是否给本turtle的评价质量做出过评价的节点
: B. ?+ X, B- s, W[set note (note + item j ([credibility]of turtle (i + 1)))
- s- |8 I/ w' \1 L+ {6 p9 k! Z$ q/ l: r;;*(exp (-(people - 2)))/(people - 2))]

) ]: ^7 x. E5 @set k (k + 1)
% k. l9 X; e% u% {' o6 _0 b' s. Z]
8 P. F' K; D9 M& z3 v' Iset j (j + 1)
0 {: `8 L: m6 X% x]$ c: P, ?0 b1 B( v5 h+ }$ `. d. O6 x
set note (note *(exp (- (1 / k)))/ k)5 r. Y- o( J* O2 E
set credibility-list (replace-item i credibility-list note)2 r* |9 ]8 Y- E7 [& a/ ]- [
set i (i + 1)5 {6 e3 d/ S1 f* h
]6 n7 A, ?! M9 c$ m  j' H% `6 P0 s- C
end
% G/ S' J% w, l! B+ Y# N& @5 ?2 F/ U7 @: R6 ^
to update-global-reputation-list
. a- `) p$ Z+ `+ m9 N: h0 f/ vlet j 0
# Y( D, U% x# n: swhile[j < people]
( {3 r$ e( w$ X8 t3 _[
: j( g' U8 v' x! l5 ]let new 0; X  j  t& h& A% t( A2 i
;;
暂存新的一个全局声誉. i5 _0 K% J0 M% b
let i 0
. j1 `: l& s5 H5 Xlet sum-money 0$ A0 I( _1 r# Z$ y" l
let credibility-money 0
8 F6 d0 K# l* f, \" cwhile [i < people]* V' k6 w- [& ~+ `8 @( z
[1 V( b- Z: w# S8 N8 i, V
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))7 m: G% A+ @* V/ b  u
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- p8 E9 s- m+ K. R) ^1 m4 eset i (i + 1)
9 F, f. @! o! k1 u]
9 g2 d$ U. I$ @5 `8 tlet k 0
1 Q% ^3 n) X# g( ?3 f: b1 G. alet new1 0
8 F, Z+ q; \! A3 p4 T! [: E$ U, ewhile [k < people]& ^6 N- K, O5 G/ Z  B+ ]6 a. o
[7 r4 ]( E! N( f! c0 e# j
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)
& j5 D0 R9 i1 Y' ?  V: n! a" Nset k (k + 1)
- Y$ u6 ^7 v4 _5 b+ a& q0 G]: `. |0 u$ _! K4 \7 d8 w* ]5 v
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; a& x% H6 x" i0 h3 l' x
set global-reputation-list (replace-item j global-reputation-list new)! U. r! k$ N1 t/ W; B+ p' I' T
set j (j + 1)
2 ]+ ^+ \* m# []
( `; X& g) |/ uend+ }8 l8 O8 `( L

7 q9 {% E5 g$ V- Y# M' z* @/ v" A- l5 p( a/ [3 O
! I$ T6 E$ X& n* g
to get-color( x8 [+ A1 S9 f

8 Q' b. T* w: i, w. aset color blue

8 ?% B  V. T0 b) c1 r- R# }: Fend
9 z+ A) q+ l# E, D8 ^, n
2 a5 O9 E# H+ n4 ~/ t$ Mto poll-class& J- v/ V- B* A5 m( C+ K- h
end+ q; @1 Z" ?# z
$ ^8 m, p3 \9 Z7 o# v& k
to setup-plot1
4 c. a; J  w" V+ S
8 R/ I0 k; T5 |, ?  d2 ^4 S7 G8 Pset-current-plot "Trends-of-Local-reputation"
" H, Q4 U2 c) F/ s# g
* ]$ ?" m9 r: [% ?
set-plot-x-range 0 xmax

. q+ i) o; B! ]
3 ^, w2 M, Y' @1 c7 y$ e  fset-plot-y-range 0.0 ymax
* B% |' X# q: u+ E
end1 Z  J6 u- B5 f8 P- s

% n  l" Q/ J% g: z) b3 ]4 ]to setup-plot2
) `0 j8 N! q) W$ g
- s5 L- u# t$ O) X1 u# |8 Zset-current-plot "Trends-of-global-reputation"

: [, E; ]; @0 r' C
* D0 n5 N: {/ F4 Z+ ^) y" [$ Y+ Kset-plot-x-range 0 xmax

& ]. s7 H- R5 V1 |2 y! e  x: a& Y" P# s5 R( @
set-plot-y-range 0.0 ymax
, e& [0 t1 M2 \
end3 s, D! ]* d# c# j( H

: r0 _" b4 ^* yto setup-plot35 `. R! B$ h- @

3 S% j8 k$ m! ]! S  ?  E9 [6 xset-current-plot "Trends-of-credibility"
% I$ C( r. e( N+ g8 e& F# o/ b
9 k3 g  ~6 A+ X) |0 @$ a  D) {) ~
set-plot-x-range 0 xmax

) g: u* R: w- l; k4 y8 _
9 f. B" ]3 Y* d+ Cset-plot-y-range 0.0 ymax

, n1 S& a+ w* g( A/ aend
4 S# i9 s* F. T& p5 i0 U  s  t: W$ h, w* J0 Z2 B( b. y& F5 h
to do-plots% M: p* O% x% P
set-current-plot "Trends-of-Local-reputation": `4 i! i$ X0 A% t: K
set-current-plot-pen "Honest service"
6 E4 E  R, U% s6 G8 H$ Yend" O8 f$ D3 k$ G0 i7 M  U/ W

( E: U# z* K/ ?" Q/ y# E% P1 X/ 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.
  ?" B# R6 D5 V8 D/ p: z" g; ?6 i$ D) Y* w1 H
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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