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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:& z* n! ?  i' w% a$ `
to do-business - V& g) ]  X  b9 I" B
rt random 360
6 m* j9 o: x& I: t9 ^ fd 1' s2 ~) R- r& k% H0 i* p
ifelse(other turtles-here != nobody)[
# \( L0 U3 t% H$ k   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.
7 P% p! {3 O6 }9 ]9 p/ b7 z) f   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 p5 j5 O2 E* s   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 ]5 y  r/ g8 n
   set [trade-record-one-len] of self length [trade-record-one] of self* e# U; ~( U2 U$ n8 x0 D9 t' G; S
   set trade-record-current( list (timer) (random money-upper-limit))4 }# _8 y( Q/ x) ~1 K' z
0 l" u5 Q: [# e
问题的提示如下:  ?2 s, c2 G5 M+ z- `: m: M" h! {) K/ J

8 X! r/ f" u- q: c3 C( gerror while turtle 50 running OF in procedure DO-BUSINESS8 h; F9 e4 _7 D; A6 y5 @
  called by procedure GO
" h8 M# `# _) Y9 `3 ?  COF expected input to be a turtle agentset or turtle but got NOBODY instead.  e$ h7 k; t: M2 I* q; U* o
(halted running of go)7 y9 f" Y$ r/ l
1 d7 Q* `: H( M+ s9 I' q" y9 ~
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~~8 ], P5 Z' |% M6 M* ^
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教: [, ~& }0 M* B: [8 z
globals[1 P- p0 ], Y8 k# `, ?3 S3 E
xmax
: J" {  e' ~6 P5 X2 S9 N) S" Yymax
) \# g6 k) m9 U/ l" Oglobal-reputation-list
" L' P" R. A7 e8 c. P" x, ?" v; @& m# R' u
;;
每一个turtle的全局声誉都存在此LIST
" z7 l0 x# R3 _credibility-list
: N$ u+ J4 K- o) a  [# D3 t4 c;;
每一个turtle的评价可信度* _# j2 D: G' V: s( X
honest-service2 H. Y: Q0 F5 B
unhonest-service
+ _( H8 z7 Y# F: [* X; u1 J" \oscillation
2 j4 d5 A* H  ]" v" ~3 g% Arand-dynamic- \6 F/ ~; T, g$ ^8 }+ f
]8 T" [0 Q% s1 k% e6 l

' b9 N7 Y1 p; u! M2 L; dturtles-own[
. f! r1 F% D4 Ktrade-record-all
; S" K' c5 `6 m;;a list of lists,
trade-record-one组成* P7 ?6 Z: t0 V& A& i8 ]. {
trade-record-one
5 |$ H5 z+ [# }7 C( g$ O! T;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! A% R5 N6 @( f% b& l
+ D( H' _6 W0 w1 A/ ~: L( R" P;;[
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]]
. M. J! b3 n& F: x" i8 |1 n# htrade-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]
4 L& u$ n$ g3 V: h% h( zcredibility-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
2 E: K& o" o( n2 ^neighbor-total( X7 d& t- {+ C$ A/ v
;;
记录该turtle的邻居节点的数目
6 V5 ]; Y/ q+ H; Itrade-time
. X3 R7 o, C. n5 X: A$ Y;;
当前发生交易的turtle的交易时间7 a2 \- d5 P  }! Z! `
appraise-give8 u& v7 f. d. T1 t% c
;;
当前发生交易时给出的评价
" v% z+ a; `  ?0 Jappraise-receive3 U3 A7 c! }, P  \
;;
当前发生交易时收到的评价
3 `2 C) z9 B2 \- I* X" Sappraise-time7 ]7 Q& z" j3 E# N% l
;;
当前发生交易时的评价时间
0 E( f7 Q: i; J& _, ]+ j9 z; wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉% _+ C8 G0 o3 \7 N- T/ C0 k' o
trade-times-total1 M+ `' t0 Q" Z
;;
与当前turtle的交易总次数3 q7 @9 z: o4 D" o3 \# A
trade-money-total
. a+ i4 Q6 _: ~/ R& Z;;
与当前turtle的交易总金额9 P9 H. R1 ]/ C) I( n) d/ _5 v4 d; r
local-reputation6 I" @% B3 i. A0 V- }1 R% Z; ^
global-reputation
  O# n6 x5 S+ ]3 E0 D- Lcredibility" c  ^6 i5 ]8 ]. ^. J4 q; E
;;
评价可信度,每次交易后都需要更新4 g3 m8 k- B! D# a6 S# P" F
credibility-all4 Q% R) V3 K* b! }, z: l
;;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
$ c( m+ [5 b- f0 x) e$ P8 Q5 b2 U2 `" W/ n8 \( _
;;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/ ?+ n: K" g% g3 {2 k/ z
credibility-one% s% z* }1 q; d$ b4 C
;;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# D- ^/ q6 l1 I' t9 F2 u0 p
global-proportion
' E2 M- {5 j9 w" O+ H2 Mcustomer0 r8 E7 ?( E9 l4 v/ U
customer-no1 G- G) Z, d" `
trust-ok6 o" l. R3 |, a7 d$ i& i6 F; z
trade-record-one-len;;trade-record-one的长度8 s  j; u! e+ Q' p5 h
]
0 z9 m# F$ R5 t$ L5 z5 \
5 b! o3 K( R- k, A! F/ S;;setup procedure( p9 e0 f/ I  h. V' w1 ~

: f+ W+ L8 `1 A- qto setup
/ K7 S' p9 b/ z* C0 W; |* l
7 o9 I2 L3 q0 F# P! H- N  ?ca

5 z5 H( z) y( R  `3 U+ F7 j: L, o$ l' g3 f
initialize-settings
% Z# x0 f; q7 T* H8 u3 B/ R
+ r1 t7 A# ^& T: x% D
crt people [setup-turtles]
6 [/ n6 w5 R) k7 F
' J% `( ~8 [# d" Z" V/ H6 Z
reset-timer

( J0 L/ J8 n! m+ [; \
; y: L6 l: L* L. Y$ e- \* a' npoll-class
$ ?1 H9 Z% q; j

6 ]3 C* g7 a' Q" w' Gsetup-plots

* \9 s( q( k+ ^  t/ k
# ^( O; W( B& T! U' D" Jdo-plots

9 `4 k: E5 X6 ~& T( C0 z* J- T& B( [end  L, @$ f: G  {- A; H; U

  {# J. d5 f$ C6 \- T8 C3 uto initialize-settings8 ?2 U. t, R* H8 U! f; Y
% q: `$ z2 @5 \* E! T( f- z# r+ J- h
set global-reputation-list []
: |3 a$ f- Q( F$ U) _5 j
* n& P% l# R/ z
set credibility-list n-values people [0.5]

% n* {0 }# r3 e2 V. V$ {% s. k; Z5 T- E! x
set honest-service 0

* W  |. O, v; O& W) s8 f
& A' I8 p# {( s9 z6 m/ |set unhonest-service 0
6 ?" `. b. C/ o0 P4 J4 u
7 ~7 |( ]$ `% `  o7 j: {
set oscillation 0
6 G6 i+ N- ~% ?# H, _

9 J! i9 Y- x% xset rand-dynamic 0
/ i/ S9 w/ }8 z8 B/ h$ m- k
end
8 [3 b! c) @% P- m/ s& q7 e* E# ?( H+ D
to setup-turtles
: {/ g! L* h; k: l4 dset shape "person"
# {4 p& X( h& q% [8 N6 Z( Ksetxy random-xcor random-ycor
5 q7 U/ B' V' Z7 ]' b% Tset trade-record-one []
4 d% l% p, `! P; f5 _) y0 w
# r& f' I0 N# C3 O) K
set trade-record-all n-values people [(list (? + 1) 0 0)] + n2 ]) c) y- ?/ `" `% y( T' U) o* q

2 J* w, N% f  Rset trade-record-current []0 }( E. m3 u  @. @
set credibility-receive []
: P7 n. f9 |% U- _" Q+ D2 Y" Iset local-reputation 0.5
9 Q+ ~) x9 D1 G6 ~  ?/ `set neighbor-total 0
6 f( i; |+ j* Tset trade-times-total 0
) Z# j4 T+ _7 k( `set trade-money-total 0
5 r# z3 @8 W$ v, f. {' K; fset customer nobody1 P! U3 j: }7 [' V  _9 N
set credibility-all n-values people [creat-credibility]  {; p: m/ t5 H, i# q! ~) w8 |
set credibility n-values people [-1]8 ^% _: C8 Y% P2 s( o/ H
get-color9 q  I& X* u$ g! {: S9 l# E

/ T  H( D/ c( o- ~end
, Q# D, S3 p/ S' c
$ ^* B! ^: @8 N) a# T) E$ B; Nto-report creat-credibility
1 M$ p1 y  J: u# Q$ M" b- F7 ]report n-values people [0.5]
2 O6 h2 S. v7 u- i; Wend) C! M6 Z' y; \6 p% I' E

0 s5 o; X3 o: O& j9 I% w2 eto setup-plots
9 H8 i- U; T  m: }  x2 g0 K) N9 P$ G& y" x" G4 N$ }
set xmax 30

: ~" k3 L# k' H- q- ~0 h5 ], O
' K$ |3 J9 a+ x$ }: y8 ~$ Y9 n: h! Hset ymax 1.0
! T4 J: N# \/ _; ~9 z8 Y# n

! C! J1 c/ e4 sclear-all-plots
; J0 a+ `+ H, w4 j! [; Q
* v6 k& h4 P& ?' k" ~# A1 d. G0 n
setup-plot1
3 I# G! J4 Q2 A4 o9 ~) k
6 s# b( Z, w3 e- G
setup-plot2

/ ^" v5 \8 T( W- Q$ s' ^* o8 |8 Q: V! h, [9 s* R
setup-plot3
3 a" I. B; P; g  l" w
end9 Z: ]0 t& Y  O. p

+ _3 G& V- l% p( q! S;;run time procedures0 H0 L7 {6 y7 y3 n
6 `, d, w4 i. g. [% y
to go- g* n5 n% J# J' |- z( q7 T9 l

- ~# f! _+ D2 [: G" J4 eask turtles [do-business]
) C% Y3 h+ s# v
end
) k8 o& \9 d6 a  L' b: d
: q: B/ `+ `2 p6 Q4 bto do-business
, I+ L: z8 \0 d& [+ R7 b/ c; n" M

9 {0 _  b" _, l$ x! f  V7 d: C
; n" }' I/ {2 v, o4 p2 Hrt random 360
3 q! A& W! R0 L8 T# g
3 O- _# s% [9 p  w" O4 w5 L, \
fd 1

2 k; G0 |6 y0 {' j5 K  ]2 n6 E+ x" o" ~5 L0 O$ Q
ifelse(other turtles-here != nobody)[
% ]# [# |4 K6 R

( \) _* {7 g* m7 ^7 Z  {9 Bset customer one-of other turtles-here

. ~1 h# M% l: {) e' [# y8 m  n( r
;; set [customer] of customer myself

3 B! p! X  E- x, ^
  Y7 ?; Y, j: `7 z& s/ M# Hset [trade-record-one] of self item (([who] of customer) - 1)
. Q$ D4 f) z( j% k0 d; e# Z1 F[trade-record-all]of self
; x* `9 P2 R: y" x* ^7 X;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; f# n/ S, M0 r  L  k9 I0 J+ x

7 {) y. O) e* Tset [trade-record-one] of customer item (([who] of self) - 1)+ ?3 C% u! r# S- O2 Z* e
[trade-record-all]of customer

, v3 J* L5 G  r* U3 |: \0 t. d' [7 V$ w1 K- o
set [trade-record-one-len] of self length [trade-record-one] of self

  d: D# E7 b1 S9 g# S( A7 [9 w1 G+ s7 f+ k
set trade-record-current( list (timer) (random money-upper-limit))
& o( X5 j- {& A
7 b/ E% t  ^# F1 a7 b1 V4 L
ask self [do-trust]0 `7 ^! _) h2 h0 H
;;
先求ij的信任度/ I* y" n" d! E  f' h
/ v* I% `' u% V+ G3 U
if ([trust-ok] of self)
) V& j2 K) h+ t# O" k, N, v;;
根据ij的信任度来决定是否与j进行交易[) H6 K! p& b8 p) s( E
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; K6 L8 b7 N! R4 x

6 Y' {# E$ E% ]0 i# j6 _[
' m# Q$ w, b# D

$ _; |  Q1 q  Ado-trade
0 a/ s- A4 b& ~9 x
- u( f0 E1 k7 D5 G& b
update-credibility-ijl

. y; M( f( P2 t9 [% h' ]2 J0 F, l) R& k' B- h
update-credibility-list2 Y- a; \; _8 N  w/ K

/ a) U3 v! _1 s
9 P* ]7 j  ~9 @+ \0 L4 }' ?6 @update-global-reputation-list

: t/ n/ H. @+ d) s" L8 A% R$ O6 i" I& `
poll-class
: c$ A7 ]% U/ }: f
/ Z9 D# B, F' w8 h
get-color
4 d4 D# J; b; @

( ^2 C9 l& z0 x$ t1 H]]
; {4 U6 A" ^( |( N, e7 O  r& u9 ?0 \3 N, ]$ i0 k. I* B
;;
如果所得的信任度满足条件,则进行交易
) B, ~0 x4 `3 {0 ]' g
; _9 e: l4 y# j% ^" J* {[

% ~7 W/ \8 a* C2 K
! Y- j5 e* e% o$ g5 V1 Lrt random 360
4 v/ h# R+ {5 x" ?) b) g) W1 }
+ n2 J) P' m, j0 Z: ^' L% m" U
fd 1
- M: x% G# v1 n7 e0 [2 n

+ G! E+ Q4 o9 S) z: c& V, G]

0 H  G6 }" f6 A3 u: g2 O; }/ l; Q: r& J7 ^) ], @
end
( o, C8 q+ [6 Y/ k! L- i( M
. w" C/ s4 W1 P3 l" t9 Y' j
to do-trust 9 w# J1 i/ c8 t; W" c7 y8 k) o) N
set trust-ok False
  [) n: H8 d4 N+ q6 @! a' l5 k3 @& A0 E7 n

% G: j  G1 a( Wlet max-trade-times 0
0 j3 o3 q+ p9 x0 z9 Iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 E& \% W1 i; B. }& v
let max-trade-money 0
- f9 w9 R0 \- K5 Jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 n9 [& Q4 d8 `8 a, b
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 F6 L8 O, {: n( i( @$ Z' h
, [+ p  Q$ ]  y% l$ T
$ {( z0 N1 T4 ?0 ~, J3 I: ~& j7 S0 X
get-global-proportion" \2 q5 D) I1 U& x  s
let trust-value# _+ {, [; G) W
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)
- j6 }4 {4 t# U3 t& m5 W  a$ P
if(trust-value > trade-trust-value)
& a' B) e' y! V[set trust-ok true]
6 w3 e1 G3 Q+ `8 Send
: Q% U4 N7 A1 ?/ P, l/ b, r: \
# B/ J" b: z6 A8 k5 zto get-global-proportion
* i6 A4 T+ g1 J9 P+ Pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
- Z2 v. j7 U) V9 [; r[set global-proportion 0]$ ?1 G: }7 Y. Q$ M! m9 s
[let i 0
. ~% p) X: q3 c7 Mlet sum-money 0
( P$ X4 x1 U4 W: q, Mwhile[ i < people]
8 ?* c7 q% M5 V! Z( U. K[
: v/ s. B( ^. Y! Rif( length (item i
; Z- c  A( e' l. b[trade-record-all] of customer) > 3 )

# ?2 \/ j- N& n7 Y4 \" c[& z4 G9 X; K* P* X2 u9 J& X* m
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! \3 P. j5 Q4 N0 z' O
]  J' k$ J* @  Z. v0 k& x8 S/ L' s
]5 {  B7 @2 p  N
let j 0
# @3 l8 P3 H8 ?$ }. rlet note 0
6 S( Y- o+ H* x4 F+ fwhile[ j < people]; K9 k% \" Y& R" g) r
[& V' I7 m9 d+ {
if( length (item i
/ S/ C# X! e- `[trade-record-all] of customer) > 3 )
, Y5 u4 m* \0 c$ T* ~" E' B
[' Y4 y& G0 Y4 q, _
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( z* N) }! i  u8 Q0 }[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 T  G, n' Y  h7 W1 M; F1 r
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 Q4 Q9 t( ^. z/ E+ D
]
8 e" N9 W; p/ Q]
; P( R$ \' T5 `) i- Bset global-proportion note
$ C4 J4 I) E" W. @: ?, g' B5 l]2 r* y: }4 z1 W% s
end
$ l$ x) y# p9 \; O$ D1 z" I; [& ?. P8 F- V  Y! |- x
to do-trade
, R+ l4 ?) e6 l; }/ a$ v;;
这个过程实际上是给双方作出评价的过程; P6 ~1 p* k7 b+ P9 X: Z9 U4 [1 c9 o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) }3 i; P/ q0 E9 V, R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 S: U' u4 n, X3 l5 l/ f; D. a
set trade-record-current lput(timer) trade-record-current
0 {# b: `9 Y* n& M;;
评价时间
- u) w/ A+ O$ J, t$ F+ u( n- eask myself [( P; K6 W! S( i) R* K$ [
update-local-reputation
& Z! Z1 Z* W$ |' n: _1 i0 Iset trade-record-current lput([local-reputation] of myself) trade-record-current
" B: m- Y: C* c: N; p9 d1 G5 u$ B]
% n# e" Q6 ~  W/ aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; j6 ]# R: p% V0 d2 w0 ?
;;
将此次交易的记录加入到trade-record-one
4 B( Z0 V) F( Xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 r6 Q- ?8 G1 p: }7 k! Llet note (item 2 trade-record-current )  O9 x) {$ U9 }  ~! U7 m* K
set trade-record-current0 i+ X* i$ G5 g# @
(replace-item 2 trade-record-current (item 3 trade-record-current))

) n" Z' u( H/ _$ ?- Vset trade-record-current" N" g  S  Y; @/ p" b9 O+ J& j6 b6 T
(replace-item 3 trade-record-current note). i( i0 Z2 |: B0 M& Q
: {- P7 o" q6 q4 A7 B+ l# l
; R" M( {4 t& t$ S6 o! o
ask customer [. b9 J: m# {8 \
update-local-reputation; f- [4 X7 h* x' g6 C( z2 e' p2 `' k
set trade-record-current
# y/ a* K5 K: {! I. M(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 p1 U5 K8 H$ L3 U- h6 D]
$ L5 U- M& M) L/ R$ A$ J* l) x: [& ~+ r- \

: B" n: x7 R5 |/ m$ `set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- R( f! x' N) x! n0 o

" }/ W7 m4 I  a3 S; l( y! @# }$ K3 oset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& d0 M% {% I& ]' V1 H# G- Y% I
;;
将此次交易的记录加入到customertrade-record-all" U, J4 n) \- i' I. N# b/ N8 X
end
8 W" Z7 j5 q  t0 [. i; l: [. v
$ e. r2 k# f4 x+ O" r% Dto update-local-reputation! _, V0 Z# G. v
set [trade-record-one-len] of myself length [trade-record-one] of myself
5 {9 N$ A" \% C' G0 w0 H' d7 F7 y% `' ]  e: ^. W

# o" m0 [# E- x9 q;;if [trade-record-one-len] of myself > 3
6 F( Z' l( Q$ a" p  w
update-neighbor-total/ w( k1 G0 `3 ^$ l
;;
更新邻居节点的数目,在此进行( s3 q+ B- X; ?) K* C+ f
let i 3# M8 D5 E/ G7 P: O: ~9 O
let sum-time 0
6 B1 _+ H; G' q* O* Dwhile[i < [trade-record-one-len] of myself]$ G( W# L& v- {
[
7 g5 X8 }2 [5 _/ Z+ E8 Q0 rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 a9 f6 R% a9 e3 l3 p: B) W( kset i
0 X% O5 k- ]2 b5 L+ S. q& j, k( i + 1)

/ N( L' y- C/ v; d7 q]6 F4 U- c$ [/ N+ C0 V8 f! b& [
let j 3. s4 r. F$ k& p) Y$ Q4 i
let sum-money 0+ o8 t" f* Q0 Y6 I/ C3 U9 [! x
while[j < [trade-record-one-len] of myself]$ O% {# G" \9 S3 c  y& M
[
0 }2 Z5 H. P. v( E. V3 Xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)# [+ b# D% M9 _. n; V8 R
set j4 p+ I, |; _% U* h, n/ [4 C8 I1 U
( j + 1)
6 o$ x: T4 A( \0 M# C
]
$ T, C6 a7 j3 T9 f8 Wlet k 3
6 Z+ O# P  x# B/ o* a8 rlet power 03 D; r2 Y' F5 z8 `) [) G* A
let local 0
" l9 _, H1 g. L7 z8 X! \3 y. ywhile [k <[trade-record-one-len] of myself]
$ f: ?7 R; T0 c  V4 \! e- m[3 T! m9 y; b* k2 j
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) , Q/ Q4 {% \+ i: ~6 A
set k (k + 1)  I  N9 n8 g4 O3 N% Y
]8 o" Z: j' P* _1 {/ Y
set [local-reputation] of myself (local)# G- M; O5 R9 ?3 ], a+ J
end
! I+ @5 u: A+ o: M4 e
/ `" v" n/ e8 [/ m7 ~to update-neighbor-total
$ w  Z6 T- J  P- r( M& \+ F' w* @) E6 n: e
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- m7 K' b7 _- D/ T. u
: o+ S& d7 e. m- I
! A% K8 O% D- D
end5 r2 {  m2 x  G/ F& G
7 z! c' ^3 I/ a* H0 ~
to update-credibility-ijl
( m; l3 l4 M  {/ C
# b4 R4 h% T$ U% D8 Q;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
( u, O" n, R) e( a, {let l 0/ ~, p% E3 Y7 b
while[ l < people ]
. T  C. s& F) c;;
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% a# O: B% Y* d5 E1 V1 c
[
5 |2 P2 X  C+ D" O9 P2 N2 M. Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 {) N" I( `" e! R1 i& s8 G4 j
if (trade-record-one-j-l-len > 3). ?9 C% a9 g3 Q- {' 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-one7 a! R2 L3 i( M$ Y
let i 3
3 }7 F$ O4 @$ |- H( p( j+ vlet sum-time 03 I, C1 H% e4 D4 b' T* X" ?/ v# @
while[i < trade-record-one-len]
% B7 q' h- Q! V/ P# r. O, t[- K' D/ J7 W9 P# s  Z/ f* X
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# \& h* [! J8 Z" `  ~; }* W4 iset i
* ?5 v) N& u  z7 r4 w( i + 1)
( b8 ^# J& W* `! G8 J0 @+ {
]8 R! `# U% a- S( k! O
let credibility-i-j-l 0
' n* W- O7 f- x;;i
评价(jjl的评价)  L: |2 X6 N# K# t8 l, b6 ^
let j 3
9 p5 L3 m  x9 u4 `- r! j' n  k: R2 rlet k 4
& w) T( e! c) i4 ]* cwhile[j < trade-record-one-len]
$ \6 J# {: D/ ~! I! F, F$ N[
2 Z  ~; r2 K* ^. z6 N+ j9 Lwhile [((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
; H9 n! S9 F) c" m( j  q6 }4 s6 Cset 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)
) b5 S; x5 e2 j; `( j6 F- E; dset j8 ]9 [4 n% `4 g3 X; F
( j + 1)
0 L+ c% s% [, u9 r( J
]. f. x  }" z/ x) v8 J0 j
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 ))
) I  ?6 N  s/ h7 D- p2 R5 L. V
- y( X3 f* [& y. Y

+ q7 N1 a* V6 m! H2 klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- n) f" y# D' `( ~( V;;
及时更新il的评价质量的评价! K( x; }+ }, n
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ h4 ~6 ^/ G, h5 gset l (l + 1)
# j# ~7 R! B) D]
9 n0 S6 d9 v6 q: w, u& y8 Dend
/ s& i# d1 w% V, _7 ?7 e$ s7 u1 ]5 H; ^' F2 H( M" Y$ k& X
to update-credibility-list5 f7 F* y5 n8 v1 d1 m
let i 0
6 `0 e! c  w# E* fwhile[i < people]
$ J/ P" H! A6 @$ f4 ^6 w& f2 C[
0 c! L  o8 Q( C" X4 Glet j 0
& h: `- E" r/ r0 klet note 0! J. |, r: T4 `% p4 N4 y
let k 0
7 c, c0 y) m% \1 B3 z  \1 o;;
计作出过评价的邻居节点的数目: r) l+ I% b" ~( _: o1 \
while[j < people]- M) n/ ]4 l: Q
[
7 M- k( p# d! t' g+ D6 j7 mif (item j( [credibility] of turtle (i + 1)) != -1)
. Q+ C- u# x8 f/ B( };;
判断是否给本turtle的评价质量做出过评价的节点
- H7 \( I8 _) R6 T7 U[set note (note + item j ([credibility]of turtle (i + 1)))
8 l) p; y) T6 ?% D, n1 `) ~$ i;;*(exp (-(people - 2)))/(people - 2))]
0 F8 ?6 ?4 J& x1 B+ o( N
set k (k + 1); o* E) G9 R& G4 x: w! a8 D& I; K2 _
]' p* N- K) b3 A! R' m
set j (j + 1)) s7 X) `% Q1 s7 Q( L* d) I
]( u+ T, M* j$ M, i: o& J1 q
set note (note *(exp (- (1 / k)))/ k)
' P- K2 M( L2 f+ sset credibility-list (replace-item i credibility-list note)
5 ^5 }8 q8 K! Y. J. ?. Mset i (i + 1)
# ]0 l+ B% d  D7 H]
9 M+ \( L, y% B2 D8 Send- o2 m" S7 `) r2 d0 J
  g; r4 n- r: K+ F
to update-global-reputation-list  ~2 T2 ?. L# t8 s, O+ A
let j 0
$ Q2 }" ?# r9 ?1 i6 H8 R2 }# _while[j < people]
, u1 f  I5 Y3 t- G[
1 N. Z$ Q' x  i3 G2 m/ U) zlet new 0
( Z/ q* `0 @+ i$ K;;
暂存新的一个全局声誉  n, n# M/ K) |. @% e
let i 0
* Y7 y) a0 j* ?* I9 elet sum-money 0
+ u3 H  @( b$ E. a$ ~let credibility-money 0) u2 a$ I. M  ]/ Y: @: y( z4 f
while [i < people]& k# E' n1 A* o# D2 r' e  }
[
9 {3 `, Q) m; a0 y# b" Lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))7 H& o$ G# |; T; l
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! i6 R+ h2 r* ^set i (i + 1): @7 Z# L$ h+ B; `1 `+ R# u
]2 x, e7 B7 k+ A
let k 0: [) c" p2 k9 b4 e, a
let new1 08 y6 `) E; i5 X
while [k < people]
8 b5 Y+ @) J  G' O' Y[' S2 Q; g& y3 z3 `( g: x
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)
) m( K! o' B' H( a1 m" ?6 ^set k (k + 1)
5 d, H  X8 j7 |& c! z3 Q]; K6 V3 g6 h+ ?7 j$ h  d
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * S$ e5 i( z1 N9 L1 F
set global-reputation-list (replace-item j global-reputation-list new)
0 M5 U0 Y' |( S- E- r3 \3 a; oset j (j + 1)/ @, }7 k% |* Y9 q
]
$ U6 R& f8 _5 V, `6 j; S3 uend. t2 `+ S3 S4 {( K, y0 Y
4 P# b2 M5 y6 G- l: E
% |6 H. j6 W& P" h# Z2 F0 M1 T3 Q# P
. ?. j" M* ~  K5 Z+ n! d
to get-color
5 O9 l% V9 h: Y
, I) o) W% u4 L! \- g2 ]set color blue
; w2 t: ^! s3 h$ K  l0 N
end  w1 z5 I; W* c; B

* k$ P9 ]) \$ {& S: m5 Oto poll-class( N- B) i5 U( O1 ?! c6 ^
end% @' Z* _, s( W

4 u1 Y, ]5 F7 \to setup-plot1* X" P3 o' F+ u! v3 j$ B+ i
% P* P: P9 |% ^( p+ ~: x
set-current-plot "Trends-of-Local-reputation"

' Q6 Z8 M6 F; N. p1 D: ~, f) A$ x' M$ p0 P* M
set-plot-x-range 0 xmax

1 b/ e+ g' }' B, X, w8 A' w1 d( T) r
2 o4 h$ U! [0 v( {; Cset-plot-y-range 0.0 ymax

5 ~7 q; {3 w& _; }4 tend( F, Z. V. P4 o% q* Y& T3 d

' K' p) W$ x# Y0 n+ N5 Pto setup-plot2
, R; Y8 |+ [$ T, ^; \- R2 I. z/ V3 p5 ?5 M7 E9 I0 T  \
set-current-plot "Trends-of-global-reputation"

# R/ Z* v- M6 \6 i+ x+ D& c, B) l" l3 N
set-plot-x-range 0 xmax

+ ?4 e; M, ^0 w) r- B6 H; x+ q  o
set-plot-y-range 0.0 ymax
) o; o7 [1 F2 `7 a0 u( H& o7 s
end& n* f+ r# r: z. M0 e

  f$ U; @/ }4 _+ e: gto setup-plot3
0 E1 `% d, D! }( A% N  a. Y  I4 ~, C8 H: \
set-current-plot "Trends-of-credibility"

+ S* b1 U( b+ o6 @+ M/ B7 X/ V; C6 T, @* N3 d
set-plot-x-range 0 xmax
  y# a: T' f! [: S* n

7 u; E" E' |- v. x, Eset-plot-y-range 0.0 ymax
' D& g* [) Q8 M1 g) {
end- u/ l8 H5 b; H" c! A0 i+ R

1 f1 t7 w" m9 R" Oto do-plots
6 t8 M& ^# |7 ~1 h+ }5 |2 r- nset-current-plot "Trends-of-Local-reputation"! ?' y3 D! X9 z" W5 W
set-current-plot-pen "Honest service"! [4 P' k3 R# @" S, z
end
* H9 v- ?8 d4 {  C( L+ v" S( p( y0 j5 _! @. T1 k' l6 d
[ 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.2 `+ s; W  t  K+ M4 X; w4 @

' o9 Q. E8 U0 i+ [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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