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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:6 B: s6 D0 }* L. L) \' u
to do-business
- Q$ M6 ^- B1 o+ O+ _ rt random 360( e3 b4 E4 P( p
fd 1
' {' p# R; {- o3 X" p ifelse(other turtles-here != nobody)[
' t3 V: U- p) P7 N0 `   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.4 ^0 _$ S* p" W3 r. J4 K
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 }: t+ q0 h$ s) c   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% |1 P( D% A' o# B2 P" w% [$ c   set [trade-record-one-len] of self length [trade-record-one] of self7 e$ S. o; z$ [+ e# a& {
   set trade-record-current( list (timer) (random money-upper-limit)). k, t9 ]+ l% C, b; [& d8 v
) r5 K/ @" Z5 A" H  ]3 T
问题的提示如下:7 v" M- P6 Z7 G
' }5 j- U  \6 e7 j3 }
error while turtle 50 running OF in procedure DO-BUSINESS2 M% A0 z; g7 C" ]+ P- W: X' S
  called by procedure GO- \7 I3 p. ~& j* h% x2 k. t4 t
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
( D* K, {/ u( m. }2 B. R# M
(halted running of go)" K# P! b2 X- c. G9 U

* s# V  I2 N* _( w$ k( S; k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~~
. d3 N/ d3 q6 p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
; N% y# C1 d7 |7 o% dglobals[
: c+ n9 ~+ ~0 n  B' O! v: c4 F* E  V) h4 wxmax+ E( _+ Z2 ^6 ~
ymax
2 X3 }7 ]0 p1 q' B, A- r9 b5 sglobal-reputation-list
% ^4 S% z# h( |) L, b0 a; a! X! ~# G- E" T( t! n
;;
每一个turtle的全局声誉都存在此LIST" H: N( l8 W) R4 K' x+ v
credibility-list
8 d8 T, e$ `" V( E# y& P4 `5 g;;
每一个turtle的评价可信度
: G& F# M4 }( x$ p' y, S: fhonest-service
  @& d2 b# d2 e7 }9 l% punhonest-service1 j. w  G$ Y$ n8 D' \6 d, U: x
oscillation
: o1 D" s0 x/ b2 Crand-dynamic) y) f3 I2 D% ~. _
]* E; ~, O4 `) b. P  }
. a. w1 I* p+ F# d5 C0 ]4 t
turtles-own[
, i: T: W1 g, T' Wtrade-record-all5 G" o- U" L$ ^
;;a list of lists,
trade-record-one组成- P) l7 j/ Y1 r, I' R
trade-record-one
% [+ ?* b0 A0 C/ Z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; S" O, z- u; L
( F& m2 G) i" `5 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]]" L; {* N- c7 k/ m
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]
( a% I, F' `; g! e. Y% k0 Fcredibility-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$ m9 n5 ], f# J6 s( S5 P4 B" |+ \- Q
neighbor-total& z9 c) a6 `' T( N8 g* D9 H
;;
记录该turtle的邻居节点的数目
+ {: L' o6 v4 itrade-time5 |5 f! |9 q1 W6 H( F) {5 q9 q1 Z3 r2 z
;;
当前发生交易的turtle的交易时间
  Y  w1 o) d% c$ qappraise-give0 G' ?5 Q/ _- A
;;
当前发生交易时给出的评价" u. i  v, i; K$ M  y2 P, Z& \
appraise-receive  s( F) d, \/ q2 \  a1 s
;;
当前发生交易时收到的评价
1 ?% m* V3 {- `appraise-time/ K5 ^0 e2 i  s; c4 |
;;
当前发生交易时的评价时间
! U! z! n" l# H6 E$ U! x% s& ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 U2 \) Q. n# a5 J1 ltrade-times-total$ i$ p8 l1 d9 [# g$ m% v  A
;;
与当前turtle的交易总次数1 S1 _5 M) ~+ N: B
trade-money-total- M4 W) E! O+ g; Q
;;
与当前turtle的交易总金额
* q, s  |# r# S8 r* ^; \local-reputation) `( p0 K" U; M" J5 I
global-reputation
. t+ V( j& d; `7 Vcredibility8 y0 E) M+ m+ z  {8 L; N
;;
评价可信度,每次交易后都需要更新
. C+ F3 J  W5 A0 i" g+ G$ Ocredibility-all6 @) \, ?( ]# Q" G4 P4 F
;;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
& P, n' f7 B0 `8 Z. d
, `( e: ]7 x7 @) x;;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, R$ v& q7 r  o# L6 L0 M
credibility-one, ?; D/ Y; E$ p7 Y
;;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
! S3 S/ w. Y5 f6 `6 _8 A& Jglobal-proportion; Z1 L  I& [" M. q* p) A+ j8 S
customer% [4 \7 i$ b! l
customer-no
$ x! }: i4 u  R9 k3 [trust-ok+ t9 d% E/ W. ?/ D& y: u; k
trade-record-one-len;;trade-record-one的长度
7 j- V$ h  G3 T) q]
' E  b7 S- ?1 K: Q6 w, V
8 c' `; `! C1 j  {* }* P;;setup procedure6 _, K" J1 v& J8 o  R$ ^+ P5 E
+ |9 S# }( W) {# B; a/ m7 H8 i* f
to setup
' s4 i& a" H6 [, K. d
. d5 o/ L/ r- fca

) P6 o8 `5 o/ R! ~
9 R( o! L. `2 c+ N1 {( iinitialize-settings

7 d% w; W1 ]9 ?5 _# I7 U: s5 c8 K% y( A4 X. k: R" h& g# ]0 X4 i& l6 ~* f
crt people [setup-turtles]

2 m9 J; a- ^3 Y6 I2 P
7 J- Y4 F8 u- y( w/ n. e7 qreset-timer
% G9 I: R% x( O, v; U1 @
9 ~9 k& K* D' x, L% p- y. r, _
poll-class

9 _* k* d  F7 V: ]( d8 ~- W) ^0 b( \( M+ h* P$ v- ^
setup-plots
4 `, m( a6 }" c5 @6 e% e% |

% D3 f  D" q5 r; H7 M4 J8 hdo-plots

% C4 b5 y9 J+ D0 kend
7 y7 }8 l* L2 e7 T/ S3 E0 b* D8 O# t' `& B" M+ w" G
to initialize-settings) V6 H( F1 F9 H) e; O% `) m
( h3 v% s! U3 d; }9 s# P4 f+ e$ b, c
set global-reputation-list []

5 Q# i9 h; B( ?3 c) T5 ~# o% p  ?- x! e. q; i/ s! _
set credibility-list n-values people [0.5]
6 {# f/ A; K3 c' o4 ~- l
7 q  m  Y( m6 D0 {
set honest-service 0

$ K5 c9 U! P4 ]% m* f) z& e+ [/ t' x2 Z/ ?3 j8 P7 v
set unhonest-service 0

9 V  f( I. q% o- E* Y$ @# Y; z6 C2 L# ^
& z; b$ E+ p( O: m8 z& ]3 O/ Wset oscillation 0

: P; K8 r: T: z2 Z4 J6 l: f$ o9 h& U0 O
set rand-dynamic 0
# p$ u/ m' X  u1 [; x9 b% T
end
$ t! h( p# d6 \) N9 N, U
3 ]2 \7 x8 `% D% fto setup-turtles
- l7 A+ N* G/ @& V! n: H6 sset shape "person"
% i$ h; x4 R, b1 }" h( wsetxy random-xcor random-ycor# A, _* B4 u, g& c
set trade-record-one []
$ C! r& R7 a9 s: q. {, I3 r8 h
# N7 U- g# f# s; n
set trade-record-all n-values people [(list (? + 1) 0 0)] * ]# J0 y" ^4 L$ I& F; r0 P
% Y. K0 P  z9 B  }- \
set trade-record-current []- N& W/ U5 C, V; c
set credibility-receive []
3 X# ]; H" p& R9 L& e3 wset local-reputation 0.5
: t7 I+ w- m$ y1 f) z# t2 O) {set neighbor-total 0
9 M& B5 |- p9 o# tset trade-times-total 0
) p8 \7 o/ N8 Z; ^- s$ ^: yset trade-money-total 0
+ X$ M' ^) k7 Eset customer nobody1 ^2 X% c! H# n
set credibility-all n-values people [creat-credibility]
0 E0 D* X& N, J, V5 J, _set credibility n-values people [-1]+ o: z- w, q; z8 @- d: ~5 C
get-color" r- p! G  V2 @) n7 v

+ E4 ~8 @+ @( h6 |9 Z: k4 j$ Vend
" ~$ M. R8 X/ u* j/ ]
( I3 j( S& N" C5 c% x6 [! Hto-report creat-credibility! q, _) p7 B! b  A+ z
report n-values people [0.5]6 U9 j% b8 k; k. F, @
end$ _* O6 X" V) V$ I

  p2 N) U# `: B; R" ~/ W6 Mto setup-plots  Z4 W4 g  ?* K# l0 v

' C  j+ _& ^" D( N- D, i1 b8 iset xmax 30
6 l2 q' I" ^# Q
6 p( V, [: h$ x
set ymax 1.0

3 M8 p0 ?+ P: ^- ^/ Q: C" W0 h
4 n, I/ g2 ]  b6 B; Yclear-all-plots

! r9 \) l# N' j( }  k- x
1 \. ]; B: N  x( t" Ksetup-plot1

  R( i5 v, p& z  n+ P- @/ z3 ?2 n& d2 O9 M% n: U* l# `
setup-plot2

6 g9 c/ Y7 t  R, W' _7 B9 @
9 p- k" e  V+ z' [, Z6 X5 Msetup-plot3
& @5 k7 Z8 m0 v% I% S- O) @5 x
end' ]0 \6 Y: |4 N- b# E  A
/ P7 z0 M5 k9 d0 y+ k: }0 F- ]
;;run time procedures
( h# Z" V% c# B0 }! [; W5 [4 B
5 x8 W; V# S3 S6 o( dto go1 v7 F& U6 B' f; j& L% J! x" [

! r6 B5 K& T6 V) I! wask turtles [do-business]

; O9 l- C8 X6 a0 q! T6 |/ y' z9 Zend
$ i2 X& |( k# b% O! Y7 t
, f( R8 I7 ^0 {0 S% `$ A$ S( zto do-business ; Y) b* ~3 H* c
9 i3 |8 k. w  L

6 F3 [2 G7 j0 w3 D/ S1 b0 mrt random 360
2 z3 Q0 L1 T6 w
! \$ L2 N- {% r& k5 ^
fd 1
8 {, e$ w. q( p& |+ Q0 A

& v: g. T5 f4 `. e0 Jifelse(other turtles-here != nobody)[
3 J5 o( v* N# j5 k" a$ o, K4 n
+ [: M% D4 ^4 H% B+ Z$ ?
set customer one-of other turtles-here
$ H- t' w2 x- {  B( O( C
5 O+ \5 g; @8 H$ O/ f# |3 j
;; set [customer] of customer myself

$ M2 n. ~9 C6 d9 l1 |2 b; s* s$ t' L1 Y3 k
set [trade-record-one] of self item (([who] of customer) - 1)
/ O7 j1 O9 ?$ e8 B/ O2 P[trade-record-all]of self
7 }1 |* H  Q/ j  T  q8 H& `;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! E2 ], W$ ?  d5 R* h  i6 }) o; E1 {; m' R/ P1 z1 B  [$ y# z
set [trade-record-one] of customer item (([who] of self) - 1)6 U: H" k$ H1 @: z% G
[trade-record-all]of customer
$ h6 {: x! v  h% T2 Z

: n/ L- z/ o& f2 nset [trade-record-one-len] of self length [trade-record-one] of self
8 w6 p8 n( u+ n/ F

& W5 D, Q: F; P) G* H& o0 f6 Kset trade-record-current( list (timer) (random money-upper-limit))

# s! S3 P: }! R* O9 }: o2 W* C* g# B
0 G3 m% P+ ^7 j& task self [do-trust]# r: z# q. |/ z
;;
先求ij的信任度
; O: J+ A* x) q1 ^( z0 y
# q/ S  \0 `. W9 tif ([trust-ok] of self)) V6 e4 |% h6 B2 F% R2 G1 W: g9 c
;;
根据ij的信任度来决定是否与j进行交易[
/ k0 @0 A& r; E/ p1 \6 b& S" nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
( h' C! C1 \/ R. c
2 v( l/ p8 U$ C$ o[
0 R5 ]( C) `% X$ p; D
0 G5 Q7 u2 J& i: \1 p( M7 Z
do-trade

$ N6 S! ~& k9 {, B
+ F" o6 o- a, U; }0 k6 ?& Kupdate-credibility-ijl

+ o+ t! K& E6 W
/ I$ n& |. ?" Q% Y! {$ T% Yupdate-credibility-list
# v, b5 K: a2 }
4 v8 u7 V5 J4 l  ]

: z0 ?! d$ W9 W- S  Supdate-global-reputation-list
( n. I" c& S9 |6 P* ]/ D
% f- v! G2 z4 c; ]3 g
poll-class

; h: ~) p! S: \* b6 S3 i
8 y. l9 D& |; ^1 Lget-color

' {  q8 Z. g8 u
5 b2 v& `1 ?7 h8 ^$ E& h+ o]]
2 l  Z/ I" i( s$ s" F. F! \6 n
' q* `# }2 B* x: M$ G, o' ]# };;
如果所得的信任度满足条件,则进行交易
  u5 I5 a7 v  j9 l
" e, W5 i0 ^3 l0 w7 Z- [[

, F0 H1 V3 p8 ^7 j' r( i
  `0 b, T7 k  W2 t* ~rt random 360

2 A6 d$ U. w8 c" {- n8 b( M2 F1 }/ F1 w/ L/ Y+ ~+ R- V
fd 1
3 K* c" \3 r7 U5 d

' I) s+ o7 |& S]
& `% |. {0 _1 B/ H

  t  `$ |1 b1 g. c  ?end
7 R$ P5 c3 H" }1 M/ e, ?3 v
5 Z  H" P9 ~! I- M3 u* Z
to do-trust 6 q9 x" R2 U. p- i5 U0 O' V
set trust-ok False- y* M3 n9 Q" U$ i3 L1 d: K4 Q

9 Q5 v7 t/ F2 o3 j! d

' J  g0 e7 z( |  j: B; w+ Plet max-trade-times 0# }* m! a' b' p4 U+ r
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 S% M& y3 K$ C4 ^5 s7 Elet max-trade-money 0) i4 G* F, N* P( I, K* e" x
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: d1 S7 f! a/ a3 P7 v9 C7 Ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' _  n, e/ C2 C: i. x" v2 X9 t

! M+ T+ t* L7 \7 k; S

3 ^; |3 f( P+ B0 Z6 h" R7 @) Q( }get-global-proportion. V. I+ I* M) P8 O8 {0 l* [
let trust-value
/ [9 M" Z6 j9 {- H6 K& W/ jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

2 f- N" J' q& N3 ?3 h! Qif(trust-value > trade-trust-value)
6 Z( {+ W- N! }  m0 d[set trust-ok true]
9 [0 Z+ M4 J4 w& {end! f# Q5 N% J" D
/ z* m$ I0 L5 A8 T1 B: F( W
to get-global-proportion
& }, E9 l1 w5 [7 e, k9 a& cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); }7 W+ c* Z* M1 ^
[set global-proportion 0]
7 t0 b) V0 `( p; m, _[let i 0
0 p) O0 [. }. f: K: K& n0 Llet sum-money 0
* s( i. {+ e/ r. I1 Uwhile[ i < people]
2 b& O" d5 G/ I) o. G( x1 M[
) {+ w; J; O0 [( J3 ^1 E1 O3 `if( length (item i3 ]0 b# Y& Q0 o3 t
[trade-record-all] of customer) > 3 )

4 s- b- g5 I. T3 [/ g7 d[
( b) L5 ^7 j/ D- e3 Wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 g7 K/ l: C+ C# H]8 f5 e2 w& ^; l! @7 f
], O1 A4 l! D! u; B0 e5 n
let j 0
- b( |9 A1 I% o# ~) n& i* [( z5 Wlet note 02 O8 Z' p: h3 B% B
while[ j < people]. |$ @& x& O+ j/ C
[
9 {3 o7 L, v; Iif( length (item i/ c" ]3 D) O0 i( h& Q! q5 q
[trade-record-all] of customer) > 3 )
2 D1 h7 W2 k5 G1 L
[
& U8 ~+ b8 Z: ~ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ y, o$ E5 S$ R
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ K. A( o0 a0 ?* [0 R7 O% `
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ f. ?8 J8 ~- D4 F
]1 m* u( I! |1 V: v2 ^
]$ t7 l1 l! o3 m  E: ?, ~
set global-proportion note7 b* M, w6 C9 S+ c
]8 M/ p5 [  q$ B4 q6 m+ n
end
4 u0 E  G& R& [: b" i4 l: m% U  z
to do-trade
5 E9 T6 ]/ u# t1 m;;
这个过程实际上是给双方作出评价的过程6 T5 J: l: Y: ?# t, N" c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 j4 ~: @4 ]0 w. M2 |' Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ J# ^/ S, u4 B2 \3 g* `set trade-record-current lput(timer) trade-record-current
9 u4 m* z; M3 n3 ^;;
评价时间5 [9 @5 ^  j- M( }* |  a0 g% p
ask myself [. f' Q7 ^: p% `1 O! }
update-local-reputation# O: h% P& B$ X& n" [  W1 N; r3 D7 j
set trade-record-current lput([local-reputation] of myself) trade-record-current! D+ I3 [/ E3 j
]
! V& r5 p; }- ?- Z, Z4 Aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( J/ s8 n, D- Y. Y, D, p6 o;;
将此次交易的记录加入到trade-record-one
& b+ x" o" O* H% U% {  uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ U) a: q' q. k0 E) F
let note (item 2 trade-record-current )4 k0 s, [. e1 `
set trade-record-current3 [9 ?' Z: B0 V- w  Z+ v. E4 d
(replace-item 2 trade-record-current (item 3 trade-record-current))
3 {4 B1 F/ E" k- s1 X/ [$ `2 J
set trade-record-current- h  g2 E1 z/ l0 j0 V7 {9 v7 a; |
(replace-item 3 trade-record-current note)
! L2 O8 \" o5 M. Y  l# i0 e% z/ S0 J2 w2 C

1 G/ [5 }6 Z8 E: r4 t4 o+ Yask customer [% }- \+ i$ m1 o% w
update-local-reputation
. |+ j) l8 e' |6 Cset trade-record-current
: k. F0 E7 m1 _0 Q, l2 N4 [(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% O( \; `6 y  n]
5 ]1 _+ Z; |4 M; q# m
4 _8 ^& z( K& D. [

/ q  I: G; n% Y) Bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ |- }: Z% q  `+ V2 c
% R/ Z; i5 c* ^8 e
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 Z2 v/ `3 g& S" y
;;
将此次交易的记录加入到customertrade-record-all
0 a. x4 y$ d/ q( h- I3 [& ~8 k+ K  Lend& E* p3 P+ v# E' [

3 h  R1 ^# v. }/ R* W& a$ A  Ito update-local-reputation( V& J( \+ H% ?: }  U6 |( z- k3 g7 t
set [trade-record-one-len] of myself length [trade-record-one] of myself& U, ?+ t" F- p# A, o

5 X' d' @1 F- J5 e4 Y9 s5 D( G; k9 f: z) @6 C5 O/ V
;;if [trade-record-one-len] of myself > 3

* h' O9 A" x, f3 L5 Hupdate-neighbor-total
/ P9 f& ~% g1 k$ A;;
更新邻居节点的数目,在此进行
0 \- i) B# d1 S8 Ylet i 35 A9 h1 f+ w! ~; }5 b" T! v2 T# H
let sum-time 0' A6 ^* E6 ?! ~$ Q* W
while[i < [trade-record-one-len] of myself]
5 M6 _" A# ?1 ~& c[* \# K( N8 \+ Z$ W, c. A
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): \1 H# M# K! L7 i! J3 k/ x- s
set i
9 @! y/ q- k) h6 b) F/ @& B( i + 1)
& A& ]5 `" f: Z- a" ?: u& |0 `' x2 v
]
/ y3 T- [0 {$ t9 U' i/ o) mlet j 3+ U8 U# c! M7 G+ i) ]& f) P1 P
let sum-money 0
; T9 `6 @  `, F# K6 swhile[j < [trade-record-one-len] of myself]9 A# [2 i8 I8 F, I4 G. S/ Z
[
1 Z  k$ ?, o- ?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)6 ~! |3 P( _5 ?
set j
/ p* q- E( x, i1 K7 Z% n( j + 1)

1 g' B* A6 h2 l# D]
! G$ M! c0 @! F8 vlet k 3+ z; g3 K# W1 c$ x/ K  U
let power 0
# ~4 V' o1 }2 J) A6 D" [let local 0
1 Z4 X' W& Z; Y, m8 ^* L$ awhile [k <[trade-record-one-len] of myself]  N* H" i3 Q/ S
[
# m) _4 m1 g4 {2 zset 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)
* k* |( W4 A& l8 _0 ?! C4 wset k (k + 1)% Y9 V: l# f) n4 c! w
]$ J+ }7 v- R+ d% B+ }- ?
set [local-reputation] of myself (local)& S8 p7 i$ h1 r8 ^' m* [+ Z  G, L
end* M) ~% t5 _* S6 ?

: N; N$ g: k4 tto update-neighbor-total7 z  @5 e' c* U6 z- N
" Y5 d7 f; P# W9 p9 f
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 m5 T! I4 B; y4 M% ^
# _  o/ e0 H- E$ S- _

( ]) q3 L, n  J' Y  j; uend/ @2 r7 {9 K7 @: g  j
- U0 I( C6 s: F" [% y$ X
to update-credibility-ijl 7 {% z9 B  I9 ~' W
1 F, G+ I7 n- \8 H/ }: I
;;
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。4 H3 F9 O% z3 p9 X, S7 ]- A
let l 0( \: i1 H" ~8 N$ P4 ~* z& N
while[ l < people ]* P) Q; W3 d$ W
;;
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
# X: y8 k( ?' ^1 M[; E8 X3 P4 m& Y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ @' L( K1 Z: o! ~7 M3 Z1 sif (trade-record-one-j-l-len > 3)
/ i+ s% b; r4 d) _0 c8 v& h  w$ i6 t[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# K. a" g' _& X% v( o3 q" i
let i 3
5 S/ a# Q8 [& F1 O$ u6 Klet sum-time 0
5 ]+ i2 v( D5 K2 e! Xwhile[i < trade-record-one-len]
* A: W$ O" ?$ J4 l; ^# V[$ u' b6 D& X2 J" w; p3 d; U, ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): y" ?# m0 ]: D
set i
) p0 }0 `8 z& O% M( i + 1)

# _7 \( o( G4 I! W1 M]
3 h" B& \$ {5 w' ^& M5 elet credibility-i-j-l 0' ]- R% P7 @$ V0 N: ~. n7 v# q
;;i
评价(jjl的评价)
6 y% C# t  i) s1 W' i/ Flet j 3
% P/ j% u- ~6 P. X# E3 J) k3 h6 }( xlet k 4
: b- @- o/ o- j; W1 Qwhile[j < trade-record-one-len]
: S+ I5 c& j# H& i, k* z: L) j5 E- V& Q[
" r; d+ V5 h2 C, s$ N4 W% U  ]$ vwhile [((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. Z7 o: G* _+ F! W
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)
  \+ Q# q. t. Z! f1 ~set j& L4 A( E* p" z1 s7 l' z) d
( j + 1)
5 s& T" w' K1 T$ l+ O$ V
]& T; q( l* M! H
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
8 p. C* M3 o) I# Q' }$ V# ?. ]: f/ q. p. {
+ m3 n3 y5 v( W+ r9 r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! R/ d5 ?& \9 P* O
;;
及时更新il的评价质量的评价
) E! j: o& ]6 Z; x$ M' @9 eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( Q7 f# D  m8 H5 @" M  _
set l (l + 1)
, p1 O" y, ^8 h/ _]' h/ _% b( B; x  d
end
+ e- ?! B1 r5 k% B. Y6 j% {" o7 Z8 ~, N! H
to update-credibility-list
% t6 ^, n7 Y& f8 x0 K* xlet i 04 s6 b  K, ?2 A6 I+ `& M
while[i < people]- }- m# a- X) c; d  b
[
. h4 I% ^0 e7 |/ U; Wlet j 0
2 x7 C0 G0 Q, w# Slet note 08 h. S$ n4 x: F6 o8 c
let k 0- E- M/ d. h) q  ~8 R
;;
计作出过评价的邻居节点的数目+ v. N' T( Z7 ?4 D$ S; D
while[j < people]5 z7 ?1 K8 ~* Q$ M$ {, O  e
[
) P% _& S9 l5 o) I! |+ _# d; }" Aif (item j( [credibility] of turtle (i + 1)) != -1)7 I7 _- Z" E% r; S1 I& c
;;
判断是否给本turtle的评价质量做出过评价的节点
, ?2 W5 ]" i) K  U0 n[set note (note + item j ([credibility]of turtle (i + 1)))
1 P2 E3 Y6 G% Z) ]/ m% a% k;;*(exp (-(people - 2)))/(people - 2))]

( H. t& t- W* wset k (k + 1)7 Y/ c2 ?6 J! G7 ~8 R" t9 D: ]
], X' {  P1 a4 o; B
set j (j + 1)2 p* [8 Y$ H0 ^- b' q5 V
]
: X# |# R' ~# @2 z! ~set note (note *(exp (- (1 / k)))/ k)* j  z5 f2 _( U0 c2 p
set credibility-list (replace-item i credibility-list note)+ v2 Z1 |3 W8 B6 c) ?
set i (i + 1)
  K  g" a: f) k- u]
+ d& o4 d: q3 ~4 d# }1 ]end
+ a  U. B: m. x' |6 w
# P$ q" M; {  q5 m- }# {6 Kto update-global-reputation-list
8 S' D6 B9 W& p) p6 Qlet j 0" C0 I1 T2 c; p* ?. l" g. z/ a
while[j < people]
6 [0 t+ X9 k& O9 r[
# N4 y  f7 E3 |9 G8 wlet new 0( K1 n( |& g3 `+ |
;;
暂存新的一个全局声誉
: W0 r, B9 P/ N, Plet i 0
, L8 K& W5 L' R! X9 ~: Z, p. Z2 E4 Hlet sum-money 04 T1 q& q- Y3 h
let credibility-money 0
2 k/ H8 s4 M# I5 S2 Wwhile [i < people]
4 t0 W/ X3 S8 o" u6 N[
% Z( q( ~7 a( h# }8 Qset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' j7 e/ v* a+ ]* ]) W9 Q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) i1 t* r  Y) @, }. a
set i (i + 1)7 T7 A8 ~. D- U( t* x7 N
]6 t/ a  J3 g: q: r! i+ e
let k 0. |) _, i4 B1 w9 z$ Z  P
let new1 0. m# K- n$ O; g3 v; Z' B$ f5 k& C
while [k < people]
2 M! s# ~8 j4 {+ j, X( T+ Z; D[
/ `. z6 q0 [& {! d  `  Fset 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)
9 J) S* u! X' P: Dset k (k + 1)4 |- B; C1 s  V- [' L( D
]) L' O0 P5 \2 C; [$ t! x
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' c* q' |4 L3 F, M
set global-reputation-list (replace-item j global-reputation-list new)1 v6 ?- V9 ~2 H9 a  f0 c
set j (j + 1)$ y% g5 |% B) _* k7 \
]8 G, {0 e$ [: Q8 _# s+ S2 H, N9 P4 W
end
! h8 J; g! J5 `- X: q& v3 _0 |) s
; m* o1 M5 n- W+ N# Z  u

0 k* p9 o5 X  C3 Z6 b( X: q/ P) Wto get-color
! {- O' @' p6 Y( C1 X6 [( |' z- l
7 S# p- R; N/ X2 a/ e  lset color blue

% I3 O7 D7 b& j  u- aend, O+ R# J8 n, W% d9 A' _
7 w2 F8 e8 |4 I
to poll-class
1 I5 E6 f. L9 `( A3 pend3 {. F- J; t, n3 U; h1 z
8 A0 ~; y, O* a5 Q
to setup-plot1
) p7 ?; ^% z, H  }. n% W$ _5 a4 \# v! [7 h; [. C  W# L
set-current-plot "Trends-of-Local-reputation"

3 g7 H' |3 `. k" k2 `& M, d0 }: ]6 |# O) i4 f: i( {5 ?" f
set-plot-x-range 0 xmax
0 b6 t/ m- W" B6 @9 x4 D  A
; Z  o( \- l6 J7 T2 R2 P
set-plot-y-range 0.0 ymax
3 B6 m* M/ E( }3 {4 w5 D
end
2 `; x& Z8 b2 ^8 [, a( M% @1 V' H! a  _9 X  w
to setup-plot2' [6 F, D- |1 Z" N+ G

- s8 {3 z) W: @- O/ o& o5 K4 Gset-current-plot "Trends-of-global-reputation"
' \* V3 p4 k- a$ h- r
5 A+ B$ s- _+ V
set-plot-x-range 0 xmax
$ G) {  v/ L: i

5 y2 N+ m9 ^. q' Vset-plot-y-range 0.0 ymax
* p0 m$ E! C/ k8 ]% T5 K) e" l
end1 W% H! i7 a' r2 d4 }
! P6 w$ G% S* R8 e9 u: Q
to setup-plot31 b: }; P5 F, E
( p  c, @& V) y. P% \% g5 B. W
set-current-plot "Trends-of-credibility"

# c9 n) R* D0 f8 t+ D. i/ V
) k1 P' `% i* yset-plot-x-range 0 xmax
& B& \" N7 u7 P4 g: h+ I

/ ^8 U5 P; ?3 g$ zset-plot-y-range 0.0 ymax

. B/ F1 q; w2 K' X) Y9 {& y' ~  j% J' fend
) D' ^+ ?+ v+ F9 \
3 K+ H+ g% i. n, G; q* V  q# A3 yto do-plots" l% v+ r' R: x6 k1 w  d5 h0 n
set-current-plot "Trends-of-Local-reputation"0 J! j1 S' h1 Z( M! ]1 `. C1 l
set-current-plot-pen "Honest service"2 e2 p& u( m1 L
end% ]: p, s, z9 v0 Y. @+ @
1 o6 ]) ~- ^+ P* a! _# `' ?
[ 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.$ D0 Q/ f: }) q( M+ g
7 }, ?: P! b' g7 I, n1 Y9 b
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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