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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:
. j+ Q& P) U  B, m  E& Yto do-business 8 t- k" A2 I' U1 @1 I
rt random 360
, s" `; N* J* S$ @+ ~ fd 1: m. l/ i& t& e3 ?% O
ifelse(other turtles-here != nobody)[1 Y0 m  q$ ^# @$ a' E( \
   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.
3 w, T' I4 v& l5 @% O   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 I. s( B+ }- ^$ c% U/ Y* G  T
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- J. ]% ]( ^& [4 C5 E% R) f0 I
   set [trade-record-one-len] of self length [trade-record-one] of self
3 j, E& m* n2 l+ b4 r& E   set trade-record-current( list (timer) (random money-upper-limit)); I; C$ `& e- l) M1 m$ H2 K& P
6 a) b# I8 ~' G1 o; y6 I1 T
问题的提示如下:
" S# Y& H5 O# o1 n5 m; k7 |; }* o  B" ^0 ?4 n4 {
error while turtle 50 running OF in procedure DO-BUSINESS
3 v) C/ m8 H/ r  called by procedure GO' d" B5 q* ]4 T- M2 [
OF expected input to be a turtle agentset or turtle but got NOBODY instead.2 g3 v4 l+ j8 s- f+ T  Q
(halted running of go); K% E7 u& [( t5 B
8 J- [+ @: O% y( 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~~
. x3 ~1 k5 V) |( j( _$ g; B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
* d. E% Q4 Z+ f" Q) X# X/ E( `globals[
% V; C) z0 B4 ]" Q: A% x% E; j% Cxmax# N3 e: Q5 h! Y5 D/ i
ymax6 t' e; g  p  }( }2 @
global-reputation-list* ~( `8 m. F8 J  k/ z1 o
1 A# z* i' ]1 s
;;
每一个turtle的全局声誉都存在此LIST8 Z7 S8 e% a9 Y2 k9 a5 O8 _) E
credibility-list0 C# t/ |1 ^$ c& l& z
;;
每一个turtle的评价可信度2 G/ N+ G3 n& p2 N5 u" E
honest-service7 l5 }1 C4 d8 ^3 u$ |3 ^- x/ r, t
unhonest-service
( m% D1 n' ?. X$ @( ~( yoscillation
1 l* l; z% Z2 |/ E: yrand-dynamic
7 e+ y* ^. d5 y# u' J/ i& f]
! `8 {! k6 t1 S1 n2 A
) R) d% [! h! v) }, [# Pturtles-own[. _0 p2 s- c4 C0 Z9 u
trade-record-all
3 ^9 i6 ]. U+ O;;a list of lists,
trade-record-one组成
# W, @2 \4 m8 F5 }trade-record-one
/ a% A" w7 L' e! k6 a' C( D4 V;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 L, X- x8 j6 I5 n  t, L# K$ q# e' x* t: ]% ?, e& V/ C3 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]]
1 z8 D$ B6 V; J- n6 Z1 ]* X; r4 Jtrade-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]. N) d; n# W/ Z4 ]) p) I$ L- O9 K
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
* ]* r1 G) m6 L+ n+ R5 Lneighbor-total
9 J; |4 A3 i& M4 C;;
记录该turtle的邻居节点的数目
6 E3 K6 ?! v3 I* j# X# Z1 ztrade-time
! `8 [3 e: S6 p  Z;;
当前发生交易的turtle的交易时间: x( v8 W/ X7 P% l& N5 G; Z
appraise-give
' v& m2 \4 P# d2 n2 v$ B;;
当前发生交易时给出的评价; J" w9 y$ V8 \; ~
appraise-receive* ]& j( J( [* ]
;;
当前发生交易时收到的评价
2 w4 p9 l7 {# ]5 p; E) ^# Iappraise-time6 J# X. ?% x% q! K5 ]
;;
当前发生交易时的评价时间
, L  D4 R1 v# n0 r# mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉# w; t' y+ C  ?4 S. O7 Q, r0 O( w6 e" y
trade-times-total' Z4 J: k: Q- f: c/ w& s: o
;;
与当前turtle的交易总次数' v7 @6 Y* D, `, y' Y8 C) _5 R
trade-money-total1 T! b$ E4 s6 a5 R  w7 Y2 `
;;
与当前turtle的交易总金额
2 p% s& p* Z/ W8 E4 Y' E5 Blocal-reputation* K) S  f3 y2 L, U5 F
global-reputation
* F% R% Q9 T% X- t3 s) `( z, Pcredibility5 B8 v0 f, H- G3 u, v  b
;;
评价可信度,每次交易后都需要更新' q$ U0 S5 [/ E  m8 R
credibility-all6 Y& D  K$ d4 {8 a# Y
;;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- j$ a! [8 Q8 k: L
4 c: L& s2 ~1 B3 [
;;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
8 R2 p/ v0 G; @credibility-one
1 X# ^! s; ~) E;;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
% `! D! }$ p! t- k' f* oglobal-proportion
/ ?8 P: v3 t8 C2 vcustomer
+ |' F$ `( d5 z. W, L6 z: Pcustomer-no
( k; r4 G8 |7 P; s/ ]" ptrust-ok6 l$ b% Q& y  n6 X2 p
trade-record-one-len;;trade-record-one的长度
8 {" D& o2 R6 n3 t]/ q4 F5 Y+ V4 u: Y: O+ l4 n
% L3 D6 `1 h6 p4 r, \# Q
;;setup procedure: q+ Q: a2 R: O* R6 m' W
; F- }# z! c6 u
to setup
* z- E; ~" Q" g: }( p" z8 N, ?+ Z( N5 g$ A6 A$ t- y4 c
ca

. i/ ?2 w! E2 r: v& ]+ t. W) N0 v) ]  ]
initialize-settings

3 C2 \; @  ^/ ?- J; x/ _  J
8 g/ v7 R2 t, X- }: |crt people [setup-turtles]
8 n. m  k1 g" m3 K- q# O
$ R& y* r: Q' o3 ?0 j
reset-timer
  k# e9 S( V0 Q3 x6 F/ a: T7 a
+ v2 @; `7 F- w5 S- K
poll-class

( @* m3 g* N2 S' D, s% E; R9 \
- H4 D) E6 l9 g+ a/ {% msetup-plots

& V% w) O+ x) B* ]9 [
7 t' Y. A7 B% \7 l7 \do-plots

' ?$ ?; S0 A1 }) [" p1 y$ Eend. p9 e" H, u3 @) l! Z' M
. O# E% s5 V2 t
to initialize-settings
/ s5 L7 d# ]# k# `
5 T1 z' L3 F7 b9 e# Qset global-reputation-list []
! o* r  n% Z9 B9 ]: N  w8 [; d
7 f$ y, `2 `! h, }" i
set credibility-list n-values people [0.5]

9 F: E3 l; q+ J$ I1 l9 y, B/ Y7 J0 Z; I6 x. c2 w
set honest-service 0
4 x! i1 i4 d' K) y
! P2 ~+ M4 o+ ^% _) y& \% R
set unhonest-service 0
4 ^/ ?& _! K6 X' M" ?
3 V( z# u$ M0 O7 K7 q3 u0 R
set oscillation 0

9 t/ g: B1 M0 ]/ p, Z0 N: V2 ^2 W' ~1 @$ j, E* d# `/ O* M. P
set rand-dynamic 0
: e* I# S1 M  L2 }
end/ K, b2 r# r9 }3 @) [1 y3 d. e
5 R( o4 b8 K3 {# H) b
to setup-turtles 4 O+ J$ K; P- Y1 F! ?# @! h
set shape "person"# R  P  _' [. P! ]7 \; _. `2 O
setxy random-xcor random-ycor
- p$ ]2 N' A# @5 o, |4 p7 Q8 A: dset trade-record-one []: I! h0 y' W& m6 ^. R% d( W% H% {
& a0 e" r2 i% g) t0 Z6 n9 g
set trade-record-all n-values people [(list (? + 1) 0 0)]
! O1 z# `' N! N9 w* o( B

6 c+ l9 ~& K6 L. ]) Pset trade-record-current []
2 L; H' S- i+ F0 F/ vset credibility-receive []
$ f$ S% q( _! J. U2 ?0 A/ Dset local-reputation 0.57 D7 z7 V* p8 R0 {. w
set neighbor-total 0
3 `- [9 t$ H$ p7 a9 J4 C8 k" @4 n3 R7 oset trade-times-total 0' g  o; H1 g. X( f% H
set trade-money-total 0! d+ c6 W9 z3 c3 {, w
set customer nobody
+ Z4 W, o- q- J" p) \7 q4 Aset credibility-all n-values people [creat-credibility]
. B1 l5 I0 }+ q! W+ \. E0 K) iset credibility n-values people [-1]( h, W& L7 G. c+ `0 F: u
get-color" }; n. k* H& d  [- u. H5 D

! f" f, }2 G8 Jend- E" x  g2 R: ^* ]. k3 b' L

2 }$ W1 c( y4 P9 f0 yto-report creat-credibility
; @, k5 t7 B! `( a' Mreport n-values people [0.5]
! @4 r+ y/ ?# u: T5 Iend
5 G. p* F# ]7 |! l* G% g+ {
6 s( t$ w' M$ t- C; U" wto setup-plots
. }. |7 j4 }3 [& m8 M1 n: ?8 Q! e
7 T" g# P2 m( g1 m& z% T% Vset xmax 30
' D3 Y; q1 @9 e8 V4 v8 `
) K0 l# \( O; D9 \- q0 E2 v
set ymax 1.0
% i% C+ t* v- _( `7 @2 s
3 L- H" m- D: F& h; F/ p$ o& S
clear-all-plots

" {. _1 b( O+ Y. j, I3 q# u$ h1 Q/ [1 X( r4 R6 y' W7 b
setup-plot1

+ a  Z+ Q( |0 ~9 P4 v+ ?3 x" P1 V, z' ~
setup-plot2

, b1 o7 _. u+ X9 g' @! c2 E# p! Q. B( N3 ?# w2 h
setup-plot3

7 F2 L( ^3 s* vend
" v. T; ^5 S( Y$ q. U( _  y6 n& I4 y! c/ p, f
;;run time procedures& A: i# w8 R) `: {8 f

# k5 w# ]  {2 d  Eto go
! I) d# d6 ^9 E- E# d! H6 }3 t" p3 z0 j; S1 r
ask turtles [do-business]
" d  h% z( k6 o: z4 z
end. L& ^9 B: _+ z. u+ N
( z6 g% g$ k0 b
to do-business
9 o4 K$ h7 C* K3 ^

7 }+ K  E% T  \4 C6 h% g; t4 ]+ U- z9 B5 v3 H2 S
rt random 360

# B7 Q- }. j% o$ b1 I- w% I# K- X; u
fd 1
- s! Z1 T% v6 E+ a' w1 b$ I
0 {0 L* x% k* Y( l7 ^
ifelse(other turtles-here != nobody)[

" a: s* [+ s) P6 T
2 f  f! D/ T" V9 [set customer one-of other turtles-here

) b- \4 C4 P( z& |/ G. D' D3 E7 K7 G3 [" s& U
;; set [customer] of customer myself

( U" ?5 P: n+ H; y7 w1 _6 A$ G. i& f; ]' k3 m6 w% N' Z1 r5 F
set [trade-record-one] of self item (([who] of customer) - 1)
- L  E0 j. Y" Z( p6 S/ N" K" i' D[trade-record-all]of self
- h6 `2 ?" h+ o+ |' S6 K) \. u& q) S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 S9 n& s& V: I1 O- A" l& P( ~( p
2 m: A  K& J) w" M$ kset [trade-record-one] of customer item (([who] of self) - 1)
3 G' [! c+ L/ L7 G[trade-record-all]of customer

# b. b* ^* B& l) @$ E( m) ~) H! C  J
  Q0 z1 t* L! x0 Hset [trade-record-one-len] of self length [trade-record-one] of self
& R1 ?7 s% T% U' r* \

2 c0 S3 d& o: n) E+ K; \$ y+ k4 z$ Q- Uset trade-record-current( list (timer) (random money-upper-limit))

) W3 R' Y& ~1 K; [: K) K4 g
! |5 W/ @, s/ _1 E  X' `* X6 N7 b+ jask self [do-trust]
5 G1 [, J' I" Y; m2 J% D& ?% ^0 ];;
先求ij的信任度' o% b! K* O6 v$ q

  W; s8 l2 r9 W9 j2 z; }: q/ [if ([trust-ok] of self)
- O" Y; T/ k; L  f2 ~0 A;;
根据ij的信任度来决定是否与j进行交易[& G4 R: O/ T, S) o' g  x$ c
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ G; x, L; v, R; F* F. \4 S) }

3 U$ A$ p3 T2 W/ |2 J[

5 n! g  S3 S) A9 S  Y# W
) e5 i2 u: o$ v7 ]- pdo-trade
+ {3 Y5 K2 W' n5 R, Z# c- k7 B

; }' E. d% x+ Dupdate-credibility-ijl
2 i7 U7 F0 O* u- S6 m! p

& s3 D& ^  ]9 c- K+ J$ O4 gupdate-credibility-list* P/ a  {3 F; `: e1 K8 _
" y1 Y7 b" \) T9 y3 b( L
2 n3 F( Q4 V( X
update-global-reputation-list

. [& N1 `1 [# ]% e" g/ h" {/ Z
  H" B# Y% s3 s6 \4 g( }$ l: ypoll-class
2 i' D1 ?* A1 ^8 k6 }% V
6 k+ P2 p' A& b: q
get-color
1 {% u- m3 _3 w. z$ C+ i
* H5 A: W. l6 }; Z0 _0 D
]]* n& Q1 k1 e/ P' }8 Z- U
  w# u" ?" e7 E" O  X0 o: A- t9 G
;;
如果所得的信任度满足条件,则进行交易0 H7 J9 \. G2 z: U+ a: Y
- d; l; u% b' E% Y' G
[
2 ?( t. F* l% p- f
% N. o% Q* Z, @  ~  d
rt random 360

) M1 R( J. ~8 S9 ?+ O# w
4 C  K7 y$ r% d- S! |( rfd 1

. B" s1 Z2 F0 Y$ Z8 u2 h2 p. z+ {, ]! r' A1 @, Q
]
8 c- Z+ j. _% V- z0 S
1 ]' M* p8 Z" I, a  b
end
8 o4 P( }: E, g) m$ P
- ~! Q' `0 ~+ Z3 ^* m
to do-trust   m6 H% m( c" \% m! G  Y4 c% u
set trust-ok False
7 M9 ?; {/ K; z
$ t( D' }, [( O( |& ]$ n/ J

5 \2 R4 ?/ B# q' r5 A7 ^2 |let max-trade-times 0/ h) L3 `% W3 w$ |1 Z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ I3 F, }  t) E$ U& jlet max-trade-money 0
( b4 R' j0 U! o. X$ j* vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 A# p+ Q1 Q6 J: d2 u2 llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 o+ {$ T/ \7 x7 e6 Q0 T5 E8 o) d, G, P

9 W$ H. G! g1 Tget-global-proportion
5 j. b7 F# f# |8 s7 C; Mlet trust-value; M; e1 S4 h% x
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

6 @, }+ n& B! S  \" I4 k  Lif(trust-value > trade-trust-value)
& V1 D; \# y; w- _! \[set trust-ok true]+ o  H. _) K! Y
end
& l2 N0 N& x- [  d) e( Z
/ m9 h& R% h6 g9 wto get-global-proportion  H5 W1 v4 h- d/ }) @
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)' n* z& K$ f7 m0 u' X% ~
[set global-proportion 0]$ W1 v" e) l1 h4 `$ N
[let i 0& l( p  Z8 E0 R) z& k" s
let sum-money 0; I6 d, ^; C; T* s2 L
while[ i < people]
. R; H" i( |. m9 v( @7 Q[& Q( \9 [8 L/ Z  D; T$ b5 q
if( length (item i3 w0 D! o$ p7 B' c) _1 B+ r; V4 w
[trade-record-all] of customer) > 3 )

. |7 v2 G/ {8 f/ K5 t9 J[
& u+ r5 ^5 x. x6 Z4 Kset sum-money (sum-money + item 2(item i [trade-record-all] of myself))& `1 R( Q! J1 ~) j; {( |) H/ \0 W
]5 ], Y; r# E# P. ?
]2 m4 j7 @9 Y: E, r1 ?& J
let j 0
( d5 f! _8 [# B/ ~, z% X1 V. f1 Q, Zlet note 0) Y# I9 A* c( v# U) E
while[ j < people]5 J! g$ x2 M- u- Z" ^
[
- Y. K( g; k% n% Jif( length (item i8 _$ P$ Q2 ~& C1 `% Q5 G- P! b  B3 Q. j
[trade-record-all] of customer) > 3 )
& ]5 o+ D1 z9 v
[
" x! k8 B" P5 y: Sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 z& m1 P3 G) F- [- N: l" v[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 }6 f$ Q8 t! N( P. R5 n! H4 ^* D1 ][set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" C, M; F5 v1 U+ o7 F% Q- U]
4 Y* t/ R7 ^% T: {+ w3 b5 W]1 n# ]/ M& }% J
set global-proportion note
5 [) ^/ _; ?1 m- C( Y]
/ u) k* v, A1 w* \end
7 p7 N' h& f% H% R) M3 p
4 I! ?/ A- `+ A, S  kto do-trade% O9 Z# Y" \# V5 V4 f4 K! N
;;
这个过程实际上是给双方作出评价的过程
) v, c; g) o6 S: q+ H8 N: cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  _* g7 t7 [, h# A3 x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ c- `( j/ h) |
set trade-record-current lput(timer) trade-record-current: B5 I# M% ^, B% `3 Y
;;
评价时间
; _! G  U! Y+ g$ m# W& m8 [/ Wask myself [
2 Q0 _: I5 d6 H% G. ^update-local-reputation, l, t9 O* K7 [( A
set trade-record-current lput([local-reputation] of myself) trade-record-current2 C6 W$ E& D1 y: K
]' t2 w9 ~$ r9 `: |) O
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) O( V2 z8 }. X# D# w6 P; [. U2 i" K
;;
将此次交易的记录加入到trade-record-one2 J4 K/ j, H) `; s
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 ~: R1 P6 M: p9 \$ b; j& H* @2 clet note (item 2 trade-record-current )
# O0 F7 C. [# H8 d# Cset trade-record-current! n# W+ Y7 H- S; d: H2 g1 W
(replace-item 2 trade-record-current (item 3 trade-record-current))

" j: g8 @7 y' Kset trade-record-current7 S5 M4 O( m  F
(replace-item 3 trade-record-current note)
, C5 i0 x9 T1 P0 j3 l
6 A8 X- v. y; E" k9 [/ N8 O

! q: K8 I: E' t  h+ uask customer [; h) k  H# s1 |
update-local-reputation9 k) K2 N  }/ n" ^" o
set trade-record-current+ f# l9 b; V$ y$ h0 @
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 D, k  A7 W- S7 `% h
]
& t9 h. @4 U" Q6 w
. J0 u: i8 X# V7 }: y

5 c0 `1 Z5 k% f1 R! Dset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# F: w1 B& Y, M1 l% O' y) L

& A; G" a% o7 Y7 pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* E2 |8 q' T& L4 o( E, x$ M;;
将此次交易的记录加入到customertrade-record-all( \5 J# d- u; a! H
end
5 q) b! e7 `2 I- [* o# U  g; _
: x0 _+ h. t3 m. G$ m: D7 Q6 |to update-local-reputation
- J" g( q* r2 H5 Rset [trade-record-one-len] of myself length [trade-record-one] of myself0 a: U5 ?, z& B9 k7 B# Z% v8 `$ W

  \7 o, ^6 _. Q7 s5 Z3 T9 s* l. x" C8 k' ]' g' p7 J
;;if [trade-record-one-len] of myself > 3
8 R/ R* n  i. R* Z" h) N! u9 ~
update-neighbor-total/ |) U! b7 H* h, M
;;
更新邻居节点的数目,在此进行
- ?3 c- H7 C% clet i 3$ H/ {0 t7 O% X9 K' r7 l
let sum-time 0+ W+ b: S5 N& i, g/ e
while[i < [trade-record-one-len] of myself]; o$ @) Z+ J5 J% s
[
/ J5 B5 v, r  Vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* X% e. ?6 ^* Dset i& h+ |0 v3 a+ U
( i + 1)

: o% v. s+ L8 m) s' \; ?! e: O]
! u1 w1 O# w2 {; d+ blet j 3) U/ T: p3 R  f) B$ W" }3 a. @" E
let sum-money 0$ b% F8 t1 Y; t' ~2 A0 [5 M3 G+ x
while[j < [trade-record-one-len] of myself]' @8 `5 Q/ k5 Z0 r4 h1 g/ p0 h
[
0 N5 _% ^6 |$ P* L& _. Cset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
$ a, e' e# i" @% Lset j+ o! u6 ]2 ~0 @0 Y- e- d! x9 z
( j + 1)
% l" C* }  q+ f6 l+ O6 ?- w/ F0 l
]( }' {, x7 h% X2 [( \
let k 3: L* ]* K, ]9 C7 R
let power 0* p) Z) b9 v9 G4 Q- i& U
let local 0. c/ Z( y# x% a/ O9 l
while [k <[trade-record-one-len] of myself]  @) U/ L/ N4 B+ z& T+ \( X
[
9 G" J* |4 P# V6 k1 ]; y8 s% tset 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)
1 p# k0 g5 O, @+ Zset k (k + 1)
7 E. ]8 I( R) g% w]6 \; u" x3 i2 q: m; j
set [local-reputation] of myself (local)
3 }1 U9 ~/ C- ]2 bend
0 V% c" {. t/ i2 }2 z1 N) e/ I" t7 Z! p
to update-neighbor-total
2 ^! T5 x4 t# G. j9 B0 q& T' K9 y3 \2 ^8 ]% f2 ~9 U
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  e( i- R: g! M9 R0 `" q
& Y, h! T" _4 ^3 C4 x* b
$ P. r5 |+ h& z
end
4 o1 l2 d4 m6 L$ ^4 u6 \- I# V- r# u: `; P" c2 A9 y1 Y
to update-credibility-ijl 9 f$ s8 g$ o  p' G  l1 x9 P
4 \9 q2 l3 f; F; G, z3 k5 ^
;;
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。
' C5 U: g3 k2 `7 }let l 0- e+ B1 R0 V$ W. n. @. O/ n7 j* ?' ]
while[ l < people ]
$ x/ q1 H/ q' \8 f/ M. `;;
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
0 v+ n+ @1 C3 T2 t( M[
$ Y; E, n. n1 _3 w6 plet trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 P, N; ~, C: P$ I& @/ b9 m1 G* \
if (trade-record-one-j-l-len > 3)
8 t' p' r) @- U! m# O, Y2 E' ~[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
5 C. Y1 `/ ^2 b9 v' Y4 D$ g4 |let i 3
! ?8 \8 w, I4 i. y% }0 Ulet sum-time 0
4 a7 [4 I4 C- swhile[i < trade-record-one-len]( U6 p, }* ^% f) w+ k: {/ a- G
[* B+ s* O0 @( z7 j" J
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& \+ a2 u/ k6 Z) M
set i
8 H- e; g7 x2 K/ Z) ]3 s( i + 1)
7 L! h+ Z5 b- v% [% ]
]
' j2 D" `0 k  A8 \, H2 alet credibility-i-j-l 0( U( y) d! a1 t+ z  @( y
;;i
评价(jjl的评价)
# x5 I9 y$ F" X9 Hlet j 34 X% a5 v# Z3 V: d+ m
let k 4: u! l6 a4 p. j. l% k& d7 Q
while[j < trade-record-one-len]! m' p  _% {4 V# G7 Q2 w( |
[
1 Y; U6 W% e3 \9 K/ N6 ewhile [((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/ X5 K' q' m: {0 t3 F7 @
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)3 |* F1 q4 g0 a* P# H; }
set j/ e' J  m+ _% n% ^+ e: J. E
( j + 1)

" ^7 S2 F$ |) j2 E; Y" F! l% F) j]  G9 k# z- i: y/ g! u
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 ))
' ^- g; h- @  L- G2 Z0 d( U% b; r. X3 I- V  t' X
; W4 u4 n* Y1 Q3 d- ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) T2 _5 ^2 w5 s/ h;;
及时更新il的评价质量的评价
* J% v/ }7 R# Yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( U) e7 E, _  y% t, l" T0 _set l (l + 1)
9 ~, D. b! O* P! @& [1 ]]9 V$ Y# V6 S! h7 v; g& A0 E
end; |  W$ W3 B- R% ~$ L
9 F9 O' W* P. t' j: P/ {
to update-credibility-list
9 {; E) g. q9 t/ r6 t' ?( ylet i 0
: a" h/ i2 D' y7 q- Lwhile[i < people]5 y% b. j; z5 u1 K) ?6 W) X1 z
[/ B+ A  J& h9 ^1 Z8 x
let j 0
/ W1 C7 L+ ^( g  J7 S& ?# ylet note 0
- c1 a7 F6 }7 G/ Flet k 0
& \2 ^$ P2 |- c;;
计作出过评价的邻居节点的数目  u: T! _$ D# _8 a
while[j < people]# ~4 A% ]& G8 }- Q/ ^2 P$ i
[  C8 E1 Y; |4 G+ M
if (item j( [credibility] of turtle (i + 1)) != -1); \: w: q* j" }  K9 J/ |- _9 \
;;
判断是否给本turtle的评价质量做出过评价的节点
* S0 M% }6 f1 e1 Y6 w: [[set note (note + item j ([credibility]of turtle (i + 1)))8 f2 y- f* t/ l( I
;;*(exp (-(people - 2)))/(people - 2))]

) U5 \( ?0 O5 Lset k (k + 1)
1 t' |7 d9 j& e  k% j]
+ [! N4 n5 @7 q9 V! M5 B; @1 dset j (j + 1)1 b, w3 o5 |* _% u0 M
]
. h7 ]+ N/ b  I: S: \7 j5 p( F/ k7 Jset note (note *(exp (- (1 / k)))/ k)
3 N6 J  ]; @$ c( j' M0 e4 Uset credibility-list (replace-item i credibility-list note)
$ ]& s+ _8 g# u  Y+ Kset i (i + 1)
& g5 x" F# d4 ?: H# s3 W$ j]
$ }9 k" e0 D( M& p4 dend: S! L. z  u! C3 V2 q0 x1 n3 P
. i1 C. X  r8 J
to update-global-reputation-list
4 S' `6 v3 x. X: f% `. X& ?let j 0
( G9 P0 a9 P2 ]% Xwhile[j < people]
5 H$ O/ d1 R& R3 ?[. @0 C0 M- s9 u0 n/ C: P$ b6 {5 l
let new 07 S, H- M) w5 k; B' \2 G) n$ h& f
;;
暂存新的一个全局声誉% U& }4 W4 N: H$ ~/ N4 N+ O8 l, \
let i 0
' \6 D2 u+ l- A  J6 S$ i5 Mlet sum-money 0) O$ e% C% H2 t. d" k
let credibility-money 04 H  M$ r" H' D, Z5 l
while [i < people]! o3 ^7 T5 P: Y  g+ {
[
9 x/ N; T9 b( @) ^# ?4 wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" e0 `( D, ?) d0 H( G7 ]+ x* Yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' ]% U6 \; x1 S; b8 E& I! ~! g
set i (i + 1)
2 X2 L8 u$ q, Z$ ^" J& N]! Y8 T  Z6 u+ _
let k 0
1 s9 h: v0 A, d2 Dlet new1 0
, Y% Z! q! U9 ^, R5 e  v0 _while [k < people]9 D: c- S! g$ _* Z, \( H& P
[
  D# O; W5 i% B1 \; v) c7 Vset 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)5 U$ J' t/ w0 h. Z
set k (k + 1)6 x6 X7 c4 T- ^6 a! p
]
+ c: g9 K4 C9 i8 b; y- u. V; Vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 Y, i/ f0 R2 p3 x$ ]
set global-reputation-list (replace-item j global-reputation-list new)5 e% G$ R9 W& T7 O" V
set j (j + 1)" t* N% ~' t9 S7 \6 y- ?- J: n5 p5 k
]+ j* o! T, ?  C, _+ v2 m1 q2 R
end
% Z4 ]/ P& S2 i+ h0 s& L) t4 Q
* Z' Z+ D. R" u  g4 U3 ^; @9 O7 H
7 P0 ~8 h% G" n, Q' h- M" i, K3 v+ N8 ^! C
to get-color. {$ V) m* m3 [- G, ~! R; o

9 i+ {9 ]7 Y* X' I# I& hset color blue
7 Z) N9 H' E  h4 p! |
end4 w7 F1 C7 [) o) U4 ^+ f, A7 B

7 R  {( j& m- r* s1 \3 Yto poll-class: r& U+ O) a. J; b) F% n2 S% v
end
# U: Z& i$ `/ m  J5 u$ X$ `( y/ ^: j" P' ^$ x" c* Q
to setup-plot1
- n! P' ]0 [# H' z4 A: i( H0 u2 \2 e; w% ]1 o6 B1 X
set-current-plot "Trends-of-Local-reputation"

2 w7 r  c* F3 }% q# U" e% _+ p
! K3 u2 d; S' ~  V  uset-plot-x-range 0 xmax

' |( e' l# v- Z; b/ g+ J: I* e8 }
0 A/ X( P$ K& b5 z6 o& F; ?# S! o4 vset-plot-y-range 0.0 ymax
( U* p1 X1 Z% Y6 J) m6 d2 C
end, K% v5 E0 ~7 C' n
3 f' ~' R  s+ K8 [7 a' h
to setup-plot2* b- @$ E$ ]) c8 L1 ]# g8 |) d

( S! ]" H  A: zset-current-plot "Trends-of-global-reputation"
4 x( ^( w# t0 u4 ^- [% ?9 a) f

& P/ _: m  ^# x2 j/ [' wset-plot-x-range 0 xmax

! v2 \, y/ q2 E/ c5 d: C+ t; _6 l6 c1 a( d; R, s; A* T
set-plot-y-range 0.0 ymax

7 s/ u% C) z" F3 L$ y+ B2 Gend
  [. _( Y& p8 A- U) Q# u
3 N, L" l- X" T% k* U: Mto setup-plot3
8 W% o) M! c. ?# R- |8 q" a4 g! S( ]# j9 y9 |. D: A
set-current-plot "Trends-of-credibility"
3 A/ \" Y7 [; c

. ], R+ n1 w; W! xset-plot-x-range 0 xmax
3 v4 Z& L8 _7 _1 D  }5 K

4 z, D& P) c* W! D+ X  J* A2 J' u8 @set-plot-y-range 0.0 ymax

! q' E6 O* X; Jend9 R3 I8 u* o  L2 }% W  z( P
) |7 X1 G2 X# n
to do-plots
. t: C" `. L3 C6 c- Yset-current-plot "Trends-of-Local-reputation"
- e6 T2 {3 v  p* iset-current-plot-pen "Honest service"
7 `! c! G* G8 _8 C8 I3 qend
  A7 l! a# K* ~
% g5 S& b, |& F! @7 Z6 _( G) f[ 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.
+ _" w) W% r' O: T" S% n0 W0 E8 O
/ L; Q. K3 \) I& G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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