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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:
/ R$ [" G' N" ]to do-business 6 k5 S! K( Y' r4 s
rt random 360. ?( c* k+ N" {6 l" J
fd 1
% I% \2 ~6 G  ^0 G3 l ifelse(other turtles-here != nobody)[! ?8 C  ]3 y) K7 R. t
   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.
: Y4 X! @! z: e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 v4 W6 |  A8 h; c/ s: m8 I2 m4 _   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
2 z/ V  C0 S( f9 v   set [trade-record-one-len] of self length [trade-record-one] of self1 Z2 v! c, s" t
   set trade-record-current( list (timer) (random money-upper-limit))/ t6 [  M4 }6 n- T& n
, R' _" a& j, H0 Q! Q
问题的提示如下:' K9 C( t- a/ g& P
- ~- t( S' {, {, `8 Q- z
error while turtle 50 running OF in procedure DO-BUSINESS( o( l" h' r0 m# K
  called by procedure GO
7 G* w# f4 ^$ P: z' hOF expected input to be a turtle agentset or turtle but got NOBODY instead.0 ?) p7 I9 O; W
(halted running of go)! x" P  ]2 z  _; G/ E3 ~+ O+ U: c
( y" b8 t' Z0 H; U+ E
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~~
! N' K3 |1 f4 @3 X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
/ g$ C9 N- d9 q* @4 }2 Cglobals[
7 @$ S5 |4 X9 j7 jxmax7 E2 r+ w! T- w
ymax+ t7 @6 Z- a, Y6 z
global-reputation-list7 A* k# R1 z0 w0 t8 W+ Y

, X7 t+ N1 b3 U: F& |$ N;;
每一个turtle的全局声誉都存在此LIST
7 \) ^" y* W2 I0 o, Icredibility-list
" `# F: w% A3 N" ?: X  E5 H) N, R;;
每一个turtle的评价可信度
: T2 ^8 O0 A) k. }; {2 U. thonest-service
4 W$ j  s' q; b6 M  kunhonest-service
7 Q7 k4 s+ e! G4 q8 L0 m  C, q6 |oscillation
; p8 e5 }# b; U3 s+ _rand-dynamic. K) Y2 D: I# H, d+ G
]
) ?+ E+ N, e; M4 t
1 _1 ~, }$ F# u. \6 T& ]  Iturtles-own[
( N% ?* a5 [  g8 @/ N3 U7 {trade-record-all0 |7 M0 H$ l% D0 W4 V3 m
;;a list of lists,
trade-record-one组成8 M+ o0 l+ U, p% F' |
trade-record-one
" w1 I/ W0 b: M;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! t+ I2 X5 Q5 j7 K( Z$ c: v
: }0 P# n) W' ]% g;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]- a  }# y- B- }0 i; @9 s
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]
+ t* a# D, e( E. t) W; g6 S4 Pcredibility-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# P7 F& d6 k( n1 F# V
neighbor-total
/ {1 k. i( R, ~) j' q6 J;;
记录该turtle的邻居节点的数目
( G& d5 e6 C& q# Htrade-time5 @. A5 s2 A% V2 H0 m7 u' L. ?
;;
当前发生交易的turtle的交易时间! ?7 R) ^! X! h2 a" g
appraise-give8 u2 [. S+ F( E# X
;;
当前发生交易时给出的评价- V! L" @5 x* G0 k4 Q/ ^
appraise-receive( L: {5 v' Q- |1 |& g& R! o" i
;;
当前发生交易时收到的评价. }& a/ v8 p3 X1 q0 k: f
appraise-time
) n6 M4 T9 |0 S$ k4 u+ J% g;;
当前发生交易时的评价时间
0 Z6 j4 f2 a; c% _2 @& i* ?local-reputation-now;;此次交易后相对于对方turtle的局部声誉5 b- P$ k7 n! ^$ B
trade-times-total
1 f) Z1 e4 ]2 e! b;;
与当前turtle的交易总次数: o7 j* D  g7 u' k' h, H6 B6 j$ b" o
trade-money-total% T' A) d( r5 B+ H$ S
;;
与当前turtle的交易总金额1 d/ t: ?& P  Q/ }: @! j
local-reputation  `* ]  u' g. J
global-reputation
2 s* _0 D% g7 a* U- w7 hcredibility9 l. x. L5 |2 D5 ~7 a4 y% V% n/ l* ?
;;
评价可信度,每次交易后都需要更新
- i; I6 M  C/ ~: E/ R) Scredibility-all
2 \% _" O* ]5 R7 N;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据% e: n+ y( p6 N5 `: G; |6 N

. m7 v$ `4 H; b7 X7 ?: k6 d;;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% ~; o+ R) d  i' ~
credibility-one& `3 u; b* ?, ]& t) |' y+ Z# ]
;;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
# r. o- ]& n6 S3 ^global-proportion0 x" }+ ?1 ~. R& S0 x
customer! Y7 u) T# F0 [
customer-no# I; N) b' U) z
trust-ok. q! k; F1 D; s- v/ Y# s5 G* _
trade-record-one-len;;trade-record-one的长度% u; W( I  R, V# F: C% Q$ I" u6 c8 w
]6 s2 t! m9 t% G, w6 c4 w% x) i
, P# T5 Q$ D: r( t7 T
;;setup procedure' g# h3 C$ Z5 U: }8 \/ \; l) u
' ^8 o$ e& f  a6 C
to setup7 }2 ~: g" h9 o5 e, c7 x( \
8 R+ r" H% Y- Q3 ^' e
ca
5 m; }5 ^  S$ u# f& A& I  F

4 i/ x  p5 C% a$ B. Kinitialize-settings
1 z; V9 m! m) O" [* A

5 G- b4 ]3 Q- x& u& |5 dcrt people [setup-turtles]
  H( T8 d9 C% b% ?+ O& T6 a  `
, h2 ~3 T2 S/ \/ R5 c# U3 P/ E
reset-timer
% t4 k% s% l1 m# `( C: F. I. f
0 y; ]6 s* w; T! N
poll-class
) S! h  q% k+ h5 d! T7 v3 W
8 z0 ^+ J6 `% \3 k
setup-plots
8 d8 q9 E  ^/ ?" d% g" V' X& t
' v) j* r+ ~+ R6 ~
do-plots

! Y1 s+ m' r0 v8 I" |end
4 j( {1 m4 M! ?8 B1 P: _: E' f9 E, I5 J- J9 i9 C/ f$ b. z8 ]
to initialize-settings* ^! t( K% D% X" u7 ?- [

2 h- \0 _7 V; Pset global-reputation-list []
+ R+ U8 q8 c$ g% P: M9 j
' i' v) ^+ g0 Y5 @' Q4 }4 i7 W3 G( `/ r
set credibility-list n-values people [0.5]
$ H  F) }7 o: d' A
2 [% c/ ^5 M, g, z: O
set honest-service 0

/ U& w! k1 r3 G2 _4 i  w$ H0 b: v4 ]8 g( x
set unhonest-service 0
2 @! L" q3 V8 X* S, }
/ `1 Y+ [% ]- ^$ `
set oscillation 0
# L4 v* D7 |4 E! n- }3 U

9 L: O9 b( {* C! n4 ^set rand-dynamic 0

8 A2 E/ K5 S. q3 l8 uend9 k$ |# ^+ q# p9 \2 Y# [3 \' b9 h

) \; N- R+ S5 z- `& U9 _$ bto setup-turtles   \, o; E3 b: o4 Z9 a- s$ W2 p2 i' Q
set shape "person"
0 q) Z# m$ @  gsetxy random-xcor random-ycor* Q$ F' c4 B! m4 l8 n8 j
set trade-record-one []
7 J: J+ \0 G: |2 g4 B$ s- \, L

6 N% M; E' n3 J' i" F  @% ]" Nset trade-record-all n-values people [(list (? + 1) 0 0)] 3 ]$ u9 z3 U- E* h% E6 u
+ d: R2 K9 I2 a& e5 n
set trade-record-current []* W& Y% Q0 f& A5 c4 |' h
set credibility-receive [], B$ ~: v5 W  ]) H
set local-reputation 0.5
/ S. j5 I" Y3 Gset neighbor-total 0
7 m* @7 i) N4 c5 c& P! U0 Iset trade-times-total 0. f5 `  c2 [4 @
set trade-money-total 0* D; k  Q0 a$ j4 U7 a& m  W
set customer nobody
; E. I1 V3 E; _5 c* U) ?set credibility-all n-values people [creat-credibility]% B9 E% E2 T" C9 X, q
set credibility n-values people [-1]
3 B) x! z& _  L0 K# V$ ?get-color
3 c0 m4 h2 P: V7 F- o

5 A  N6 {# Q. a. B8 e6 `( @  `end6 x  G! Y3 R' m. \. b! T

0 }! C  s  |" E7 m- N6 Yto-report creat-credibility
+ f8 U3 [, F( e  b4 {. w9 H7 Ireport n-values people [0.5]
, a* s+ k8 o3 s2 l: d# Oend% P9 f1 d7 U" h9 d0 ?5 t
4 ?( v$ E8 H; ^1 b
to setup-plots4 D0 S/ u8 N8 i/ W% ~5 S

* p1 {& T0 I$ q! N- o8 r  Nset xmax 30

2 s0 w9 o) S5 r5 g
' R" |* B+ [1 q; lset ymax 1.0

2 f0 ^# o. J2 F( P/ r5 Y! s& f! |
clear-all-plots

& M& B& k( N+ g; G! o- p* C7 \$ [$ {! e, N1 M
setup-plot1
8 T' ]4 K4 M4 I2 P& p0 P( Y2 O  W/ g( q

/ x0 |* F% ]/ t' Qsetup-plot2
% U- Q3 u4 j, T' b9 H

3 }" y4 B' }. C; q, @9 csetup-plot3
4 L" U2 k/ t) @* }( A
end$ u/ D, d+ L1 C+ ]/ X( ]7 W
, r% W: O+ z+ s
;;run time procedures
! q# |- B4 m9 u  `
0 |" z; J# o2 }  e; e$ a3 c; ^to go3 G9 c& M' z* L3 T7 W5 G& W/ g2 W+ k

# U6 |" W9 ^: c3 zask turtles [do-business]

- r$ P- w2 B$ Lend
; X  Z4 W' R. g, Q( S% j
1 ^( p! d' Y0 qto do-business ) l0 l- D. \; [& D' Z

& L! `7 E) H5 G5 g+ M5 J4 r' ?* T1 {- V$ C* H% f1 N& y6 ], J
rt random 360
1 y3 q7 Z2 W8 t& R

1 q  A  ^: T" Z# J! i" efd 1
3 R# v% m  O2 F$ P
# E/ X' Q- B  g$ v6 {7 F2 o1 K- ]3 o: T6 W
ifelse(other turtles-here != nobody)[

, [6 S( j6 u3 V+ H3 G- [# x5 b
$ m6 {4 i( z" `3 S8 cset customer one-of other turtles-here
) ], {, i5 g2 u

" ~7 O* j. z. `  }4 w* O;; set [customer] of customer myself

: n+ A1 T$ K6 [: Y" ~% V3 d  C
+ F5 Z& \$ P; q& }9 c# v/ Gset [trade-record-one] of self item (([who] of customer) - 1)" c- t; j) H* z, z( }5 E' x
[trade-record-all]of self* |3 G4 S: {# x& L) }
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! w6 L$ R! j, O* I9 P7 I! s; N7 @
set [trade-record-one] of customer item (([who] of self) - 1)
9 u: e/ S, p7 F. i) \# ^# B- o[trade-record-all]of customer

3 L1 O0 b+ `" p0 D/ v+ u/ K; `$ p7 \7 }3 u% R+ m" c
set [trade-record-one-len] of self length [trade-record-one] of self
, g! j) Z: G0 n! V, E

: g9 p& s8 s2 l! \6 `set trade-record-current( list (timer) (random money-upper-limit))

% O, D6 \  g9 p/ ?  \+ |
+ v* z. t% j" N$ H5 yask self [do-trust]
) A- K; L7 c$ O;;
先求ij的信任度
6 }" E6 W4 E3 T  e# z2 m& e  u5 C) I% D! n( a
if ([trust-ok] of self)6 S5 q' Q$ F  T$ ^. i: `& E) c3 t$ E
;;
根据ij的信任度来决定是否与j进行交易[3 v# r7 ~* G% m7 v% A
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' |/ M: `5 j$ X- `9 ~9 v$ g" Q! Z6 s0 v9 e% T5 x1 c0 |
[

& S1 G( M5 V5 r, ?
; D* N: {4 B6 Z$ I1 _% k' }- H6 Hdo-trade
5 P) b& F; L: ~
+ p# f1 ]- `% O  C, o3 s' ]0 c, c
update-credibility-ijl
7 D1 _# d- y0 Q2 e( e
3 F3 Z' n& q$ x( j8 R
update-credibility-list) R( O1 e) b) q" A

, ?* v9 B8 }, ^8 b5 D4 g9 t. p$ x0 q( J
update-global-reputation-list

  }$ H8 i+ ~6 M% f4 \- f6 I* {; r5 A; }0 e2 F) y
poll-class
: i( A+ P* k0 i5 G: p+ e5 J$ c

4 f1 Y' @, ^  c4 Xget-color
/ p8 Q( t# z, S1 T+ I- O* H
( i( f$ h- N$ \
]]# f( C) u& C  Y8 M0 b6 i; H
: W5 W" @8 r% F5 o) y% v5 Q
;;
如果所得的信任度满足条件,则进行交易
# U8 L8 l0 [+ t; J6 M+ u' Y3 `& V+ S; y4 x; i# e( q4 y1 L
[

* v# O5 R- c0 B' E( p
1 b$ k) Y* e2 crt random 360

" z, Y. W8 G& ]& D8 N* R. h# G7 I* K4 [! |. }/ l+ y' s- Q
fd 1

* M* i1 M) V$ m  _9 y. J" B. z6 B5 ^8 V
]
2 f. b( q. B5 l8 v; ]
  G' D! E, H, k+ Z
end

0 X! S6 y2 Q$ B+ y0 E/ _# d) H, c" @0 c$ v" t- A
to do-trust 4 A6 G3 M7 k. P6 g# s  V1 m
set trust-ok False
$ f9 B( @3 |4 w4 d. i( K
0 `9 S* U, S2 K8 X7 V
& x& ]5 q3 f3 l+ o) J
let max-trade-times 0
& o7 V* U0 ]0 U& g% pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 T$ d- B. F( W% M# |8 k
let max-trade-money 0. B9 U* C. b& M7 v
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 k; n# e; `( E5 t2 d! K& H2 slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 P8 Y9 E; J; e5 j) D8 h

1 p. I+ i  `! L+ ]' B7 L7 E

" O1 i) |$ C; i: p6 q" Tget-global-proportion! z9 M/ s& U$ W' Y
let trust-value
, g* C. x9 A, O0 Z- |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)

) N" v( G: w: {& d1 M4 q3 xif(trust-value > trade-trust-value)4 ]" w% O! a  {* I' B2 B' s9 A
[set trust-ok true]2 v6 E! j1 \- t, @0 @
end" {& V' v. W: }7 o
$ X, E# s5 [* T7 m0 v  i  f
to get-global-proportion
: z" C* C2 U* y; M) F: S) }: S' v% vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 y+ g# y+ R  ^% m9 H
[set global-proportion 0]
5 a8 O0 D6 ~+ |8 K9 |( V# m! `" q[let i 0
1 M) \* e! W. h! Nlet sum-money 0
% S0 q$ `- s$ X+ o( z# ]while[ i < people]
# z  h3 ^, ?, }& x7 ^3 i# t3 J0 L[8 G' O1 E+ O) O& `
if( length (item i  z/ T2 ?# X9 s! V. g
[trade-record-all] of customer) > 3 )

" B! ~/ w6 @; C; G  O[
7 I& `6 z. D$ T/ |5 J( ~+ Yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))& I/ y" S  F/ v# O+ m, ?8 M
]
8 G" e0 K: b3 J; p/ }9 l8 p]
8 m; ?& b, q( |) S/ jlet j 0. u- R, c7 f/ ~5 J
let note 0
9 R7 R. E5 N+ K" Y: U+ ?; qwhile[ j < people]1 ~0 W4 k3 ~5 R( P
[
) t6 R% X* g) H( @, Q6 T; r( rif( length (item i
2 @% d: `  L5 h9 n[trade-record-all] of customer) > 3 )

+ @. l& s6 l" |$ g$ N' ~0 Q[
8 w/ X  i% o4 S2 _! l7 s3 Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 m5 p. j* A/ Q7 f9 R) z8 g
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- Y& ^" o. }+ j. |[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) y- r: B9 h; P% e' Z4 o; B0 z
]* v" Q9 w+ J* Y% T
]/ b. b  U4 c8 R) `: T( b" p3 I
set global-proportion note
7 y9 r" u' t5 w& p# w]: S  a5 x! f+ {6 k
end
1 E( d; @% j9 c' N% U
6 h" U8 ?5 X4 |9 R& s; P7 vto do-trade
' }4 z& R" `+ U" d# _;;
这个过程实际上是给双方作出评价的过程
; r" y5 ~# k# Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ b( b* {0 {3 h- m1 K6 yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 b9 h- m: N/ s8 r. Hset trade-record-current lput(timer) trade-record-current4 _  Y, j# a- j4 K# `
;;
评价时间
" j' T3 n" Q( b8 n" [ask myself [2 k6 v% j+ y1 D! S5 q) ^
update-local-reputation
, b9 ?3 g0 t1 ?9 Z% [2 `. sset trade-record-current lput([local-reputation] of myself) trade-record-current' z1 }3 |4 e' x  N0 C/ u* O
]& a: o* _! \- |2 L, S6 M6 m
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 o" K# N: f: @3 E9 m6 P5 T
;;
将此次交易的记录加入到trade-record-one
7 c7 c4 s8 \* R  U4 h# O/ zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), }% Q/ I2 s0 V5 }, P) E2 V
let note (item 2 trade-record-current )3 R' v1 Y5 [  j' M' V$ ?: q
set trade-record-current
' H2 t/ W# L% ?9 ^1 n4 `(replace-item 2 trade-record-current (item 3 trade-record-current))
9 G: H) h7 e% B4 d1 ~# A0 e
set trade-record-current
) p2 t- H! h/ f(replace-item 3 trade-record-current note)
  d1 b& E$ ^+ T% h* A
$ ~  P4 X* A' U' J: R  t& U' v
* |6 o: A9 n$ E( X5 D! H/ c
ask customer [
" y: \& i9 v  _* K3 j1 U9 rupdate-local-reputation
/ j: K; g- ?! y# ^% j$ v' p5 q8 `set trade-record-current
4 X3 }" y( }/ j7 Q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' {$ F8 t4 k, p9 l2 S
]
' |6 R+ `$ A0 n6 i" h) D; n
7 j% q6 Y/ p. H3 ]9 T
9 }9 A" D& V( l5 U0 e* F
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 a5 n" n# A% `1 ?( B7 L

) u: H' U) ~9 j. h- C- bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" J! O3 g4 c# z* P;;
将此次交易的记录加入到customertrade-record-all! f/ G) F4 J: C8 A8 n- M8 X& v
end  I* J! b( N3 _* O; ?/ k; o
" R( R) W0 _, r" Z
to update-local-reputation
5 h& H+ b% x: L9 {$ v# D0 {# |* b  `set [trade-record-one-len] of myself length [trade-record-one] of myself
" m& l8 R2 N8 [" O9 o# F
/ `) E9 `! b# z- d8 I# S
8 P- Y+ {! \( ]# u;;if [trade-record-one-len] of myself > 3

5 m- Z) _7 |- q" R5 f5 xupdate-neighbor-total
! j) H6 E8 R. e) R7 v;;
更新邻居节点的数目,在此进行
. D) M* T# [3 U8 Q! o1 ^let i 3
' e3 x+ A- q! p& z# [let sum-time 0
% d. Q/ b8 D: p0 \( P' fwhile[i < [trade-record-one-len] of myself]
! R9 Q1 B/ r8 }$ L# ~. f, z, \+ J[- {# ]$ M8 j; X5 v* q3 r
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 ?' |7 ^: V- Xset i
/ n5 U& |  H9 W( i + 1)

) S) Z5 R- t' ]- [' V8 g4 I$ l; @]
, t% Z  m- G# O) clet j 30 b, A  T  b9 W
let sum-money 0
) `; [6 ~3 O- R( Rwhile[j < [trade-record-one-len] of myself]
  ~5 f9 w: o7 F4 \8 `/ }& x" {[0 |- {- d* D% {' \8 l5 f
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)
) f  ^1 k5 o' f5 @$ t  U! zset j
& w; r. u, \& O: z7 |7 v0 k% v( j + 1)
" N, r4 Y2 x) F( a
]
4 E5 ^* R# o5 u/ ]9 |4 glet k 3
6 K3 q8 e* t/ Q( k2 clet power 02 Q/ r8 e6 d" V
let local 0
  A3 x( J& d, H, g2 @5 k) C1 o( iwhile [k <[trade-record-one-len] of myself]0 c. ?) [$ N8 W8 }
[/ P2 |- c9 ^8 S- e
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) % s8 Y# @9 \6 q. i4 c
set k (k + 1)( j( `8 k1 `2 B
]+ }" Z, ]0 ~2 X! Q) Y) k& l
set [local-reputation] of myself (local)
( v0 Q& U& y  J/ c$ {% U! @end
, t; b  k( n- D3 o( E% m7 @1 i$ ]* O5 g. L+ b& O7 _& C: O2 w
to update-neighbor-total
/ h( F2 ~( ?  H2 M5 h7 _( @7 l$ _2 l
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% N+ w, A& X* ]# M! M) d- B% w, i7 \9 S5 O, M5 U

. Q9 F  v! c4 L' f3 _end: \, {& n3 A* ^1 Y
; u8 E9 e. ]* C& y
to update-credibility-ijl
4 L; g/ ]/ @/ a' g# b6 @/ @
% i, o8 m# D% \- p;;
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. z/ y/ l" c8 z- i6 z  t
let l 0
; S9 p4 v3 F; y: x- g6 bwhile[ l < people ]
( @% J1 W0 Z8 ~/ s% ^) S. P;;
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
# s$ S5 k. p. Z) @[
  Y1 [9 Y( l! d5 rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 x! D1 ]( m8 a, Hif (trade-record-one-j-l-len > 3)
; K5 H6 z1 x7 q1 o[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 K# U- i- W. s( Vlet i 3; l- ]3 @* S2 J+ c
let sum-time 0' V1 |2 ?, {. [7 _! D+ E" W
while[i < trade-record-one-len]- ^7 ^- e7 @" t$ f  {
[
4 A7 [! e4 u. o( Nset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  H: f9 ], C9 d+ C2 _6 s, j4 L
set i) s) H$ C% m' A( _" r- A
( i + 1)

: `/ r" A4 s) o+ x1 j  J]# t5 p- l, r. g- h6 i8 \' m7 \
let credibility-i-j-l 0
) S4 J+ M9 B. _! p, B;;i
评价(jjl的评价)
& ]0 i3 @: C' r& l. klet j 3
+ v$ B% c0 g; D5 g8 @# g6 qlet k 4
2 ^1 E2 f1 P; M4 {* P1 Gwhile[j < trade-record-one-len]
1 V7 y& U2 `1 M# ^[' O6 \. K3 Z8 f* d8 r
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7 ~9 q- Q& ~8 c  I3 b4 u  R6 m* Y2 [- u
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)- [8 U& O+ O' T$ n7 U8 Q
set j5 n+ U% ~, i5 @1 K
( j + 1)

( E; K1 J# I" ^, w6 j; R]. ^0 D' ?+ n. m5 @% j" y/ ?; g
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 ))5 z; K7 p$ Y4 g( N4 j1 o# ]. K1 @
- V8 k' i) D- p8 R) Y
' Q( j! @6 W3 A
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); T1 _, \) c) [
;;
及时更新il的评价质量的评价8 O7 F0 e! Y) q3 g+ {
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) x% T, E$ b, A+ }  p- h" w: fset l (l + 1)+ P4 X3 d3 f5 k3 T8 W8 }
]
0 l1 T2 K3 b1 |8 Bend2 P4 W' L0 d8 `; u: o) r1 _

6 v/ O/ h6 L! o) Rto update-credibility-list$ H# |1 V( F/ ^) [, p/ n6 {& w% R
let i 0
: [4 `, o  W" Gwhile[i < people]: R  {, r& [" |$ O4 e8 t4 L& r
[* q, H# J2 P1 E( S# b7 r
let j 06 D) E; t* d8 e
let note 0
: l4 D7 ], @. ~! q" A* k' Hlet k 01 t) V6 z1 w6 _8 _5 |9 z) k/ u" ]
;;
计作出过评价的邻居节点的数目  B$ z# K8 N; a  D- u  \9 m: o
while[j < people]
! D8 g' ]& ~8 J9 n# u% l[
+ a( Z2 `2 ~8 r& m  y6 Yif (item j( [credibility] of turtle (i + 1)) != -1)) J( m0 u; ^: t! L8 [
;;
判断是否给本turtle的评价质量做出过评价的节点8 r6 S% R" v. m' d
[set note (note + item j ([credibility]of turtle (i + 1)))
1 A1 G8 W& n+ h- B  j% K7 C0 V;;*(exp (-(people - 2)))/(people - 2))]
. b2 |1 q' p: v' V2 v" b" C& Q0 ^  E
set k (k + 1); u, j# ]3 _1 c8 p( e
]) o+ W9 m1 H5 E2 ]
set j (j + 1)" N8 j# Q8 ^! h) I8 ?0 T
]/ R6 e" q0 C# C' J# z
set note (note *(exp (- (1 / k)))/ k)
: r" }1 `( f" d+ P7 x$ u: jset credibility-list (replace-item i credibility-list note)
$ K" e9 B6 t, E* Tset i (i + 1)! w0 E/ ?7 \1 E/ G6 b+ a" K
]+ l8 m. r6 S4 _$ Y2 T
end
6 R; ]: A) l. _% E$ V0 [& i: U* w4 R- e# M2 o/ O9 C  U0 m
to update-global-reputation-list4 @( {0 E6 V9 E' L
let j 03 t. L( F  S, G6 C4 A, c$ c8 D0 Y
while[j < people]
: Q3 M# H; I6 ^% e; @" x9 `. w6 j[: X& K" Q) a3 u
let new 0, a9 I5 J; d) j$ y& C: D  a+ A/ C8 R% h
;;
暂存新的一个全局声誉
: O  T; u/ f6 N! }let i 0
, B9 Z% C. l  j; p8 Elet sum-money 06 _( _! U. l6 }1 [  S0 M$ n
let credibility-money 0' ^6 E2 O1 R8 w
while [i < people]
! W4 `4 G9 A2 h4 a1 G[; s0 s$ E5 Z* x
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 @/ {: ^5 f8 F4 w3 `* Y0 O7 {) W
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" l" {7 X- _" h2 b7 n, h& a  c
set i (i + 1)
4 S: U& U8 R: e]
, E+ V* j% d8 R( [3 @1 Q3 b- flet k 0
5 H- e- C2 ~. Z" W1 \' qlet new1 0; @9 [3 u' p; t) {! \, K6 k4 y
while [k < people]& W; \- ?$ e' j" ?
[
3 }' \8 j- N5 t- A) @% @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)
8 B+ Q9 ^8 [% E# D& @) ~- x( Zset k (k + 1)
3 h9 Z9 t" I! J& d6 Y  x]2 E' Z; ]" Z0 h7 L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 B# o* l' ]- m
set global-reputation-list (replace-item j global-reputation-list new)
8 T* C+ Z+ b* S: l+ Bset j (j + 1)2 m4 N8 f; q3 L! G6 t9 C
]+ q/ t0 _' m; A4 I9 l, q
end3 o4 o: x& Q: w! F
' T* ~$ s. ]" Q8 P! w) j
: ^4 {. Y9 C/ Q7 a8 q

& p2 W+ e& A& Q, Y. H$ {0 jto get-color
; t2 _$ M: n: d0 e0 Y9 k# w9 G/ @, y3 D; T) O3 v! x0 F
set color blue
4 y! s6 ~  k" @4 x! x
end$ e% y0 i# `% K# N1 v2 |4 |" w
* R* t" g: f; Z2 c
to poll-class1 J5 ^& |( d) Z2 a
end
% [! M0 z, g, r2 v+ P
9 Z+ A& C" ~- K# b3 p8 Pto setup-plot1
4 `/ W2 \) X7 ]! i/ l* p" Q! m6 T8 W& z* |
set-current-plot "Trends-of-Local-reputation"
+ O! a; A, R: q' R" o

0 H  w/ b: d* Qset-plot-x-range 0 xmax

# E/ R) h2 {7 h8 c& Q* X1 C
' V0 [. A* s9 p; [4 j+ _set-plot-y-range 0.0 ymax

# a0 i; \. i  }' y4 h$ _end6 ?1 E7 ~# `1 {* I, k. j
9 _5 z$ p" [3 A% y( R, J
to setup-plot2; \2 `7 ^3 c1 |$ ]9 A* g& H
* R. Z" q; x  z: }
set-current-plot "Trends-of-global-reputation"
. E+ {7 y0 O  h! [; Z# I
& ~! J0 b, M4 U/ d0 n3 G6 N4 a
set-plot-x-range 0 xmax
' D* ~9 i+ ^6 [

3 a$ t1 V$ G! m! ]) Zset-plot-y-range 0.0 ymax
4 Z- r6 I! `3 h
end- P( @3 C1 Y0 z) h1 u' i- t, R

/ D( m% Q: J* ]- Bto setup-plot3
6 t" `3 ~  g3 Y$ M, C2 j! n+ o; }1 i
( G. R, _. L! B, }, Qset-current-plot "Trends-of-credibility"
  h4 A* r. Y4 D9 f! h  }' @

% ^$ ^/ K8 \, e4 Q$ Fset-plot-x-range 0 xmax
* M6 w3 ^: ^( z8 A6 _

4 k3 P2 H6 T- Kset-plot-y-range 0.0 ymax
/ h% e: Q5 t  `* ]0 `5 ~+ ^0 e
end
1 K2 I* H  L6 Z3 n' {! P5 S; A% |0 G
8 \& n  W3 }: k/ n2 O& Vto do-plots
0 s8 N5 f0 W2 Y% R+ uset-current-plot "Trends-of-Local-reputation"  ~( h3 V5 i0 {6 W
set-current-plot-pen "Honest service"3 S$ b9 |3 s. }3 _6 H
end( @* |* _: ~! @7 |
4 X$ x2 |0 d  u' n: t8 V  o
[ 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.. h0 n# d8 p+ p( W8 @( s

* ~- o* Y/ q; B& B* u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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