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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:( u3 R8 u$ f: ^/ t6 I6 B8 `2 T; m8 ?
to do-business 3 l) o* ~5 y0 t
rt random 360
3 F  Z; [4 f+ T3 p7 [( P' R" S fd 1
& I: d+ n; V/ e ifelse(other turtles-here != nobody)[; q* F( U# N4 S# `
   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.  o- ?+ g3 D+ r/ Z) A$ a
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( v7 G- z  M7 B& U% ~  q, \: P   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' M) e& L, I0 n' I
   set [trade-record-one-len] of self length [trade-record-one] of self
. m2 B$ ^6 D, a. r* ?6 w' w4 Z0 K   set trade-record-current( list (timer) (random money-upper-limit))' G0 F- g" o6 f+ H* F$ W

$ Y, u' p- y' u2 S+ j问题的提示如下:0 m) |0 f8 J: v0 w* M' s

0 q7 T' y! v8 nerror while turtle 50 running OF in procedure DO-BUSINESS
) B! A( I0 h3 @6 N# J( {4 ?  called by procedure GO* C9 K3 |; T, ]' L0 o* s# a
OF expected input to be a turtle agentset or turtle but got NOBODY instead.! S5 j5 H4 ~1 F' b# L) r
(halted running of go)5 {7 ]9 Q  u& Z; [% U

; C) I+ H, y. W3 @+ v! U7 Q4 o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~~) F0 S  Y5 K; E. o' U( k6 n/ L
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
' c6 b) ?. }8 I) u; }globals[
* G( _' v# a, Y7 ^+ Wxmax
/ z2 `# J! Q) o5 h( P1 Q1 I- Hymax
( s& |8 u8 {8 e  r' u2 Bglobal-reputation-list
! n3 P4 x! X5 a" t% D3 G6 C" f( K8 x/ P: u8 c6 @* V! M
;;
每一个turtle的全局声誉都存在此LIST* g( ], B8 c7 d. N
credibility-list
5 D2 V( b8 \5 k( P6 Z! _;;
每一个turtle的评价可信度
" K- q$ ?. s" D6 g! Vhonest-service
4 r7 z' Y+ {5 R* ~$ f' h) Wunhonest-service
, }( P; D7 w7 c1 T0 f+ Yoscillation
/ I9 u5 _. j9 Xrand-dynamic. a: B9 ^+ n) t% f( R% q0 X, ?! n
]
% V0 W; \! d- ~2 O5 A/ P8 Z- I. l  h, ~! J
turtles-own[
& j6 `+ ~: ^# Ztrade-record-all
" k+ A% C' M* o: d* O3 M( @3 ];;a list of lists,
trade-record-one组成
7 T0 S! F5 |+ U$ u( u* y  Xtrade-record-one8 J* M- e0 J" `/ B' R; ^! N
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ K3 C- b4 k) b
! o, u5 J! j9 q( D5 q: K;;[
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]]
* Z/ q' Y/ r+ Z' u2 Ztrade-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]$ c2 a; ^2 L* t9 o( b
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
) v2 Y4 b( w+ v# A, pneighbor-total7 i+ j' D" F6 T) u( r6 O# I' N
;;
记录该turtle的邻居节点的数目, U/ N9 N1 f: P5 S6 k2 m
trade-time( U. A7 K4 o& ]- L  ?+ x' B3 n
;;
当前发生交易的turtle的交易时间
/ P9 Z; \* |! I' c7 N, Rappraise-give8 s+ w- S6 a& q# H
;;
当前发生交易时给出的评价; P- K& W+ a- o7 ~1 [" o: p
appraise-receive
; Q3 {2 O* x7 W2 k* U;;
当前发生交易时收到的评价
; A& ]5 i' K/ P0 S5 ^. \' a. h& qappraise-time
* @; o3 V" [. a;;
当前发生交易时的评价时间; I7 O! d$ P0 t4 H1 d
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ p, G/ K) r7 e8 c' Z# u) ^* ~2 ftrade-times-total$ I: K" n0 m& F% m
;;
与当前turtle的交易总次数; h2 n: S+ d+ B" {" r7 P4 R% t
trade-money-total
0 @/ J. ^' Z1 F" Y. ]+ R) ^# j+ y( [;;
与当前turtle的交易总金额! q7 a/ m/ [* f6 J8 v( f/ N" ~
local-reputation+ h9 B( ~2 r2 a6 y' p1 h; p
global-reputation- e7 [; q* ?3 U* G* @
credibility
/ k- |) l, u" q9 G) k9 p& q6 p) a; h;;
评价可信度,每次交易后都需要更新! \. l9 [+ I5 H3 w/ Q5 m
credibility-all
5 L0 G. X, k. z$ g% d1 D;;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' E% f( Z: W1 ?6 u+ H: A% F

; |1 P, W* |! A9 B1 O9 u;;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- l. b/ _; x" q% X: a: n- W
credibility-one
& N4 k- s" u3 P; @0 @. a;;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( i4 Q. a) b5 c0 E
global-proportion
+ k7 L" Y' I) _5 f- P; L  {customer
1 H/ i/ d) f$ Ycustomer-no
  Q* w7 B4 X8 u2 N9 t' V9 jtrust-ok( r4 _8 c) B: V! v% e4 A
trade-record-one-len;;trade-record-one的长度8 o, \5 \' Z' Y0 e8 l6 o
]
% a, A$ Q7 s! x/ p" ^
- @' t# ~, y2 u% j3 U;;setup procedure
: r. S: n$ }7 B" G4 |1 k* y& Y4 K3 o9 r1 p
to setup" I  L5 h; z# [% x& A. ?- F; Y

0 f" F% ^) v4 M, qca

; k2 h0 V" @7 l6 r" {2 V$ e+ d! F5 I% G
initialize-settings
$ N: W2 n0 D+ h
0 J# K) @% d$ k8 J$ k% a
crt people [setup-turtles]
0 W1 A1 e+ C( N: k4 p6 v4 L

  V2 D: |; T8 w7 P( n, p6 ereset-timer
8 T# o' Z7 y* b' T

8 L5 Q/ |7 b7 C: H6 Npoll-class

* e! N1 j. R1 T: o: j0 I5 _! l& T; M: t2 f, B: P. I
setup-plots

: `+ x  s3 ?; O% \/ R: L  c0 e* o
0 k. C5 s/ S% h" X. Q. R/ f# E+ Jdo-plots
- |3 X; Y# K4 B2 J# R' c
end
! M% X2 Z$ v% l9 o3 l1 Y
7 P: f4 ]2 }- c) m& t& B( `" Qto initialize-settings
' y- D/ o0 U* _% b$ ]2 w/ v" I
- W4 O. V, O8 {7 n9 Fset global-reputation-list []
" {7 A7 f1 n5 }2 w: F  |) f

8 b$ _' P% f2 a+ @2 hset credibility-list n-values people [0.5]
- B3 Q3 u% n0 Q+ j
* {& v4 P) \- V; t7 V
set honest-service 0
3 A4 D+ Z4 C% E4 j; I

8 f) |$ a, ]; d) M2 ], m+ ~set unhonest-service 0

( e9 d1 x4 C2 l. R3 H0 A/ D8 _
7 j1 D! x: R; S" `0 G& Kset oscillation 0
. s" g. E# j" ?9 @3 `5 ^9 o0 _
" R5 b, y; J$ N; C
set rand-dynamic 0
, X* m4 o* D4 E, o. R
end
% ?7 i+ H% H1 y4 d: z. q. A3 M' {. b6 o" X
to setup-turtles ! N8 U8 H5 K2 j! [/ ~" Y
set shape "person"# R1 C& r% i& ^4 E$ N; O5 d! i2 Q
setxy random-xcor random-ycor
2 e, c1 k4 f& q( c- Sset trade-record-one []8 U3 f+ I6 V: a! e* g
0 M5 [& a/ P& F: ?; v3 M* Y
set trade-record-all n-values people [(list (? + 1) 0 0)] 1 G' z+ t% Z4 t$ p. Y6 d% t/ N$ [( e
/ m5 E; y3 R9 s
set trade-record-current []
6 R: F) n2 g$ s2 Kset credibility-receive []7 o+ C6 p" A% }3 u. h
set local-reputation 0.5
3 _& Z. k2 X. ~6 g, ?0 G$ _set neighbor-total 0' ?# F( g7 S  F6 i
set trade-times-total 0
4 j  @7 b8 p4 v* m+ vset trade-money-total 0
6 P8 o1 C  N& g6 Q; ?set customer nobody- ^8 R9 A% O6 D* e0 O$ ^
set credibility-all n-values people [creat-credibility]7 x5 g! F( m1 g/ V5 a. q9 j' I
set credibility n-values people [-1]
5 H9 m$ P2 B: k5 y4 u% s7 k1 bget-color# c# w4 G5 T5 i
% `- ~( \, F( T/ F
end
1 @2 X# j+ c% T3 e' ?* S% T8 m
# ~. L; I8 R$ [8 Pto-report creat-credibility
' E6 D8 E+ P! K- freport n-values people [0.5]4 X, Z) c3 R& d( t: U
end
+ O9 r, H2 l# k) d1 ^1 _7 o# g7 _! X. q1 G6 r8 b
to setup-plots, _+ S' t9 |  I2 W$ E5 k

# G, k% L6 r/ |: T2 Aset xmax 30
# S# t0 `2 j) y3 _  W$ `7 f
( {$ M% z& W5 n+ t, J  b, N" `
set ymax 1.0
1 l6 E8 Z: U! J6 l' e3 m

8 Q: _( J* _% s+ @2 O( b6 w5 qclear-all-plots

6 E6 C2 ~4 a- i( M! C1 x0 I( v
5 X+ ]2 M' ?/ l5 Bsetup-plot1
. i( f, l4 M1 h8 i; A' b

1 @* U. v6 |  }" i& q! s# vsetup-plot2

! k) S; o3 l& u0 q" a# o
! L' D2 Z; n1 B" J1 Bsetup-plot3

. q8 }* q5 l! {2 iend
, b/ J* ]# g! P* _7 O  ~* X  a: G5 Z
;;run time procedures, ]# r% I4 U* Y5 q3 }' a/ {
9 p, Z. l; ]. X
to go& q  s5 @3 Z9 P/ ]

1 a( I* ?% n% [! n9 ?ask turtles [do-business]
9 i7 Z' ^% e4 W: Y
end) G+ P% J6 D+ D4 }) C5 }

" ~; e5 b2 a: N. H; |, _to do-business : N) }+ o8 W8 U. X, D* `' C9 E) }8 w

: P6 n" h" [7 I$ L! ?0 [
  t6 T9 D7 H$ A: I% s; j$ I. \% u% Grt random 360
4 E8 p' X) O  @! b' w+ E
: c2 j6 J2 u: t+ @2 a5 W. Z
fd 1

7 v0 B( O7 X- L8 \9 a
, O; M* t; w& Iifelse(other turtles-here != nobody)[
& b# D* H5 v% ~6 l: \2 ~1 t

" T' m$ g+ g3 [3 Z0 ]# S0 b& o7 }set customer one-of other turtles-here

2 T; ^) X' ]; R8 F8 j- n6 m" n) _2 g8 z3 i! l, P
;; set [customer] of customer myself

7 C- ~# f6 B# s* `8 r% l/ t- n
$ w: k# ~( ]6 [set [trade-record-one] of self item (([who] of customer) - 1)  b# t* _: ^7 \7 M( W
[trade-record-all]of self0 V) I" {! g# k# `
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ P2 X: {2 d  M6 {3 v8 H
3 t2 v3 V  A# P
set [trade-record-one] of customer item (([who] of self) - 1)
8 q. l4 W0 M  [. S- A[trade-record-all]of customer
: Q/ `8 z! U% o
* v8 S- ]3 N, Q8 T" R) v% y' |
set [trade-record-one-len] of self length [trade-record-one] of self

) f/ _6 |6 O0 L* X3 K# N5 b8 p( j8 X  u1 B; D& ?- u
set trade-record-current( list (timer) (random money-upper-limit))
/ t# L( s! z4 ^5 P8 E* m: `1 \" d. e
; R4 q6 k. a6 n# M5 j4 N2 U: \
ask self [do-trust]& o* x4 ?* g7 h0 o! J
;;
先求ij的信任度6 K! l3 O) u7 z- a4 l5 o& Q

6 ~; Z0 U( ^1 Zif ([trust-ok] of self)
! Y2 ?; e8 B$ C5 z;;
根据ij的信任度来决定是否与j进行交易[
% r5 B8 @: i6 Q5 s) G. Dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 [+ ?2 E: U0 r, D% j

( h8 _6 f5 Y9 A" m+ R2 ]0 _. O[
/ z+ V  f! E* O2 `
' ?8 D* C7 N/ s  v
do-trade
$ ?& P* E3 K8 H7 p' H! p
3 H! r' Z2 f3 `
update-credibility-ijl

/ _3 X3 E) `3 ^; Z! K4 x6 s. L7 W8 F6 u6 w
update-credibility-list  }. k/ x, X. x0 Z

( Z, L& [/ w5 |; ^
- E, E2 x5 O  [) jupdate-global-reputation-list
/ p0 X8 e& d1 h' a4 v

9 `' b6 U1 w& cpoll-class
6 ~7 f0 i% w7 s7 W

0 R  L7 \6 A3 {& ^get-color
  ]' N, w6 d/ k2 w
- [1 D9 z/ Y& C: m
]]
. J7 V' w4 R5 z0 A* K( q9 j1 Q* D+ L2 S" C9 G  {5 n! a4 N
;;
如果所得的信任度满足条件,则进行交易
" n  D) n' O8 g& p3 C: b/ {; o, A- X# {' }2 i" ?+ g9 B" l$ z' \
[

5 q' a. E5 d- {) L8 R0 F
, w4 J& M6 {' m' m( @# E& ?rt random 360
, I5 J2 I" q, t
* S( D* P4 K7 \; ]
fd 1
0 M- v& J6 o( u
; U0 L/ Z: L6 L1 N  G$ b
]
* s/ c* T; W% l. Y
/ I6 W% u9 \% l' ]( u4 {* ?# L% c
end

6 ~/ B7 O1 L$ B4 A
0 y  ~; R3 ~6 F5 ^6 `% v' Bto do-trust
+ O+ h7 I1 m! H' }" B6 X$ oset trust-ok False
) A" K6 ?0 a7 n- f# c+ d
/ j' i' a/ m3 u" L

% c1 b8 r' x. N- Z5 dlet max-trade-times 0$ W! G. O* i& T6 N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]+ W' x0 x6 [; W/ Z' l( K
let max-trade-money 0
# |) e6 J4 D" ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ I5 K) d9 C1 T. R4 e" S, Vlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% O8 Y4 r0 [! `* l
5 h' P0 s- c8 n) ?5 v% D

6 z0 ^$ P; W" d: ]! R1 v* jget-global-proportion0 G  C( f0 g/ l8 N
let trust-value
$ g8 V) N5 m. Y& _3 W: y. 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)

5 t( h) b3 P" ], K, ~; sif(trust-value > trade-trust-value)
7 h  p9 o! t& A" l[set trust-ok true]
) E* z* Q2 `# m. R$ J: @end
; e/ U: [9 N% r2 I1 K! e% p7 i3 s. X/ Q8 N3 x, v& Q4 {
to get-global-proportion
* Y% t2 i1 A7 `1 Y) `ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% R% O3 p7 t$ B% l' f) m# ^4 n* z( E' D9 _[set global-proportion 0], c8 u+ j. w/ {# W  O8 R  a
[let i 0
# M% `; h- q- Klet sum-money 0
* L. e- I* n. F* N# ~while[ i < people]
1 k8 Y: ?: c% h3 H[
+ A( |8 o3 ?0 z# ^0 |) Z) _if( length (item i) f# \' X7 z- i" {+ e! v6 c7 X
[trade-record-all] of customer) > 3 )
7 m# G# e2 @' F( S4 M0 e+ N& o6 q1 N
[) R; I$ q: A& t8 Q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ |) g4 R( a0 E& e]
8 |; A% G# D+ \) T4 ^$ o]
# a* b) ?/ O  A5 X# ulet j 0
0 b1 p1 A- _! Slet note 0
" a" G: g9 v+ O8 F0 F2 Qwhile[ j < people]
6 a% Y$ u. a: o5 K! D6 i7 ^7 n[9 a; b8 d% x) G
if( length (item i; c9 }3 {# Z$ F4 x3 r; ^8 d% g& D
[trade-record-all] of customer) > 3 )

; r+ t5 w6 x; g$ G3 d[. y" C# v3 t# N# @+ z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( l( d' ~2 k8 |) C7 l2 x9 r
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 l. g$ \$ L, v( K  T5 ][set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. k" ~" W' K. Q( A# x
]
  Q( W' `8 @" p  F* L) T]) g5 H1 i8 q, H
set global-proportion note8 {8 _. D# s3 M6 K) ^% J% ~4 z
]
6 {$ P( [" U1 r- V& C6 eend: s* F1 O: ^% i" }, l. q
' F8 f3 H# }+ S" V% R) ~- I, d
to do-trade# t! e3 p% w0 v+ A6 z0 o6 g
;;
这个过程实际上是给双方作出评价的过程+ {+ ^3 c& X9 a7 V9 d5 `2 y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 r1 X4 L, ]7 y1 F; Z; j' k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. B' B- `. B5 u& _, ]' g
set trade-record-current lput(timer) trade-record-current& a8 E5 F( y  Z
;;
评价时间2 q; U3 ^: e+ i
ask myself [. G% @, w9 @! M' [) P
update-local-reputation
8 }/ D1 R0 W1 l2 ]% Zset trade-record-current lput([local-reputation] of myself) trade-record-current
4 y6 |) K6 a& [. L]3 E0 A5 s7 j2 u7 R
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 N6 ~& `& W6 c& T  F
;;
将此次交易的记录加入到trade-record-one$ O+ C, p% c% P' d/ _" @/ Z/ p5 v: L
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" A! E$ D. e5 }! ^% s- g# w8 C& M, k
let note (item 2 trade-record-current )1 T7 M" K, t5 C
set trade-record-current
; B/ L7 e0 R' A(replace-item 2 trade-record-current (item 3 trade-record-current))
& O$ b  }5 X" T! b
set trade-record-current2 q9 k0 P. P8 h1 B4 q/ y# J8 Y
(replace-item 3 trade-record-current note)
+ f+ s9 g* M* Q' P2 q( L* k
2 `2 q0 F- }, c2 H$ S6 o

" Z* Y  _: q0 `( l) M9 o: `8 Jask customer [
# r$ w! q' H$ T& C; ]' mupdate-local-reputation6 [: Z0 p& U8 ?# j( w+ k2 N
set trade-record-current1 `! z) x" C  R1 @' J0 g2 j
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! t, G$ N/ Z; d( a) Y]
( u5 }$ _( b' m9 \$ j, j
5 q/ q) ^/ o% o

; S) Y+ L( j& E9 d6 Wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 v8 @% l, u& U4 S2 y' a! p

! I- I' ]# O$ _$ e/ Nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
: b4 _1 n9 X5 ]7 {8 b! _;;
将此次交易的记录加入到customertrade-record-all
6 j8 ~8 B" B; T  r0 D& Vend+ `+ c) Z* W% C" G6 D

' ]7 O. P3 m# ^. [to update-local-reputation5 x" ~, J2 l: H
set [trade-record-one-len] of myself length [trade-record-one] of myself3 y$ t' M3 i3 R* b

8 A$ D: z& ^4 u2 u% c# ~5 O4 v) ~+ g1 {. Y& X: D9 S
;;if [trade-record-one-len] of myself > 3
$ {7 T! P6 X! x" `# a9 Y
update-neighbor-total
* S$ ?8 X' W' Q! t. @;;
更新邻居节点的数目,在此进行/ q9 {- _; f7 k) ]- j; c
let i 3: d' \& O8 y& f
let sum-time 0
& T' ?, P- N0 i" n5 q7 n, m/ xwhile[i < [trade-record-one-len] of myself]
0 K8 @- s( t. A5 C& y0 C4 R/ ^[
! N) j3 S% D6 c- p  S2 x. W2 {set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ V3 C9 Y: q% Q1 L  Lset i- w" ]2 ^, ^1 \6 B6 Z7 M
( i + 1)
* n; b' Y0 D; ?" |/ e2 ~  [
]: A% ~& W( O0 _
let j 3. Q3 _- z$ ~1 ^; I8 }1 i( Z
let sum-money 00 w- P- ]7 l# \- u! |! e
while[j < [trade-record-one-len] of myself]
6 P' u' @: x/ y$ D; i1 _; J[8 K& U- h/ R3 R
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)
* m0 c, O2 N1 y" x8 v5 Z1 Oset j" l( K3 l) u  S- p
( j + 1)
6 r) s! \1 C1 z; Q6 L
]* s7 N( ~  r2 ^+ d% ^* H# g$ n
let k 3
8 L8 ]& y# n0 Q# q( J( u' Q( s1 alet power 0
" W- ]; P9 R- Z* \let local 0, \3 U1 c! f: z7 q& m: ~, B
while [k <[trade-record-one-len] of myself]0 a$ P7 A$ z3 I8 K
[8 M' Y; Y+ n+ o$ a; A$ K  ~3 ?2 T
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) 9 @, F8 J+ n; r  N2 A3 Y5 R9 s  s
set k (k + 1)
- |( _( g6 M; U; p: P. Y" h]
' H* s  j( r/ kset [local-reputation] of myself (local)+ f5 n4 e- M* t4 S
end
4 g+ g2 m, ~2 ~# E! K, O/ k, }: p; A  S
to update-neighbor-total  x# ?# c+ n) t+ \

3 |# O2 j% K0 Y/ \) ?" Z/ ]: m) Vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* |2 e( Y! k* X0 O% k: I

- V* j# C+ U/ _, N1 j9 g, t
; A- n- O/ Z+ v" m$ [
end
( w" }0 B! E+ U/ f7 ^/ v, ~* W$ h! p9 }6 h6 U
to update-credibility-ijl
; h  p$ V% ~7 y$ ]& ^- t  g/ w5 J( B0 y" A0 L
;;
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# q% d* }5 y6 L! J
let l 02 p+ u) ?" k- f+ ^0 w* g7 L
while[ l < people ]
4 g2 F! j0 l1 m4 p: o" c, 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& {- \7 u) r' L( F4 n6 t
[
# u* _! _' d+ C7 Hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)  |3 k+ [. _% d4 `% O
if (trade-record-one-j-l-len > 3)
" v( l6 P, V6 D- C% f[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
$ c- j% P7 Y0 k7 a) E: Ulet i 3
% V1 T  e" @. w* _" Nlet sum-time 05 v$ s+ w" N4 U% Z  n% i. K; R
while[i < trade-record-one-len]
$ @0 Y* z! E; l2 e7 ~4 n7 z% I[
( s. C0 {" n: v0 U$ X: e4 s( X+ rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" Q- F, d! N" t! z
set i: {' }# ?! S  Z. g
( i + 1)
1 B) r$ ~  e3 b
]
8 r! S3 P: ^9 [' N) `  ~3 Qlet credibility-i-j-l 0
. m1 P0 r. C- A9 b* l6 c2 q( L( m;;i
评价(jjl的评价)
' e! G$ d: ], E$ V) a* s& \3 Zlet j 3
1 @9 L4 I3 V3 ?* Q3 G; U8 V0 mlet k 4
8 B- ~4 p& |4 E% A/ \2 bwhile[j < trade-record-one-len]
1 {5 k7 Q$ X7 ~" |( s( i; p) K[
* R% t5 }) g# `( uwhile [((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 n" P0 Y$ o: V; d# J) g8 Z
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)
! l3 d9 |7 f; f% u$ n9 xset j* S# ]/ y2 `6 O% C% K8 s7 w7 o
( j + 1)

' R6 s1 i+ k* F' p( N" P]5 y( `4 L* L$ P9 i1 ~- K
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 ))
0 f1 x4 Y2 N) Z* J; q2 b  H, s% H( c
6 |  ?3 C: Z+ j7 p
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ J0 \" ~7 ?" ^;;
及时更新il的评价质量的评价
& W9 p, z6 m! d9 aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 |8 w: j5 ?: p+ R0 gset l (l + 1)
: ]9 y# {+ Q0 _9 C3 E% S]0 Q, E; {+ C; e7 A- |9 W$ J& q
end
  J. m  l8 ?% I+ X/ p- S' w' X: W3 L0 V0 ~% W: o4 b% F; K; B" H
to update-credibility-list2 F6 B$ q! O, T8 R- M/ u
let i 0, U& f) P& }: `( @6 ^# Z7 [* ]
while[i < people]- c' X  v9 H, K3 [8 o$ m3 B% q8 M
[
. j; d9 y* b$ Clet j 0, F5 S4 x6 F$ }9 _! S: H
let note 0; @& O; m2 }2 m# N) ]
let k 0- n4 X' d, Q; \! J
;;
计作出过评价的邻居节点的数目
3 h- w, W: S0 x  Nwhile[j < people]
* h& v/ w7 z/ e- ~: ?2 m[  H: s8 G  A# h& ^3 x* t% s, M
if (item j( [credibility] of turtle (i + 1)) != -1)* v* e# B: D$ l1 w5 g5 q; z
;;
判断是否给本turtle的评价质量做出过评价的节点
6 Z: B- V& d/ g. y9 Y! U; B' Q' ]) o[set note (note + item j ([credibility]of turtle (i + 1)))
% r! |, G" @" v8 N, w/ a;;*(exp (-(people - 2)))/(people - 2))]
8 _# e0 s) y  k- v
set k (k + 1)- Z5 G* X4 N# n: M) A, ]
]
, i! D5 _. R( r) _set j (j + 1); K4 f- f4 m3 V, @/ d+ n
]: S$ d6 [3 D9 B: {6 |
set note (note *(exp (- (1 / k)))/ k)
$ ~- ?$ B2 ?' E- z* e* x: Kset credibility-list (replace-item i credibility-list note)
9 P* Y' E* c: _& G  b: Yset i (i + 1); e& r) j  h2 x% P
]
8 y6 a3 W. @4 zend  `+ v) N, i) k4 k# C; V

2 H! i! R% L( S3 k" h* Wto update-global-reputation-list. r6 M; A1 D/ w5 o4 G' R
let j 0
/ }3 d) z6 G* |* I: Swhile[j < people]
" C: c; u0 Z' H4 J1 L) F) B[. S' O: K( E- H; Z/ J
let new 0: F( f2 F5 u; z
;;
暂存新的一个全局声誉
' \( q/ I/ Y! Q+ g- q- Clet i 02 L/ H/ o5 }" }5 X" m, @+ x
let sum-money 09 Y" w' Q  e6 E0 k/ r
let credibility-money 0% S8 U( G: e; i7 t2 N
while [i < people]9 n  I% s& ^6 m3 c0 O( K
[
: I" W1 f5 O* O3 l7 z2 ?* F( Aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), k7 n7 B0 t$ I3 T0 b$ u/ `
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 Z' {4 p; I) H/ b
set i (i + 1)5 ^0 s3 B  l7 a$ |3 u6 _; @3 ]
]
. O6 F9 M# O* i8 f- Tlet k 0( R7 u( [, m  J# d
let new1 0
" \$ N  I! A/ E( y' Kwhile [k < people]3 E( T7 ^: D  h3 C/ l5 ^4 e- C
[
3 t$ v6 h2 R3 ~% Cset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)4 x3 Y; c5 G9 ~, B  R& H
set k (k + 1)1 B$ \, }1 R' c* m% D9 z) b
]0 k7 h- h9 W' Q; N" F/ Q$ P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 ^- Q2 o+ A1 ^  gset global-reputation-list (replace-item j global-reputation-list new)
5 p" ~- O% _5 o. _( P% X6 e, [/ U% yset j (j + 1)3 c8 H5 c; L0 q
]$ Q9 M: @  x5 k% x( J& p
end9 e4 u/ ]8 S9 Y6 i5 f8 F6 y+ p, d

- n, _# W; V, e8 v( x
. G5 I% v' T2 u; h
3 T6 n5 ~2 E# O7 y' M" a, \& zto get-color
* a8 I: U+ H7 Q8 k7 j& B4 Z$ S9 m8 }$ R9 ?' y) H
set color blue
3 \; X9 C3 X# z9 \, T
end8 i' u* @9 U# Q! i6 Q

7 V" w0 l1 }! W' o5 [& T. A2 \to poll-class( ~) V4 |; H# G  g, Y
end/ g1 |* u8 W2 Z7 _

* S4 g& d0 e. X' nto setup-plot19 J' Q$ M2 k; l2 D

* ^5 E% ~! T  Wset-current-plot "Trends-of-Local-reputation"

7 {' i; l+ w5 D8 J. o% u5 T- c4 R( n; y0 f
set-plot-x-range 0 xmax
" V6 t& Q5 h" p% A- b8 H- d

1 p% G& O8 I+ E2 q2 h: }" U0 xset-plot-y-range 0.0 ymax
! }1 i) y3 e4 Z! @1 n, m8 G1 V
end4 R: `9 C5 @0 n+ f2 y
- K% X. c6 r; [: Y% o2 E
to setup-plot24 x: M! ^9 c# \3 d  I# ~
  P- b7 S* V8 m* y. d* m1 J5 T
set-current-plot "Trends-of-global-reputation"
# a! k! J4 K, q  z: _1 o( h; @
0 j8 F; t6 E8 p4 M
set-plot-x-range 0 xmax
( G( {0 r. e5 n( L, C

& }2 }# @5 e! ^5 f% y% W4 Wset-plot-y-range 0.0 ymax

5 o) V  k- U' a+ O" s5 Send: A7 _/ \: F; K& G7 K

% [7 O& Y9 B% q) @' Vto setup-plot31 H5 U+ ?/ N5 {  S
8 m$ ]9 [% {% B) t- R2 H
set-current-plot "Trends-of-credibility"
4 ]4 \2 ^0 b# Y

3 P2 }, @- p- P; h* bset-plot-x-range 0 xmax

& F( [2 f& U) ]+ [3 ^% I$ L; G* W# Q; z: A1 f; O) t
set-plot-y-range 0.0 ymax
# X8 O3 f: [; L# ?0 B7 k  j" ]
end
2 @0 g5 `# C. ]! P6 C- G& F( ^  V7 `  F( m
to do-plots
# u$ H; y) Z7 S; u5 s& aset-current-plot "Trends-of-Local-reputation"  n1 U, D9 V0 c7 _0 C
set-current-plot-pen "Honest service"
5 S" [( b9 l" W. aend
0 \9 N( D" N' @; C# p  d6 K
! Y; A% x4 z8 N/ U$ _5 l[ 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.
9 y. Q8 k) A9 p4 C+ H% a* ?$ g& w* s/ T( j2 \
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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