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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:! V! L$ }" s- y/ v( r9 M9 U
to do-business ( R. c- f1 |6 r
rt random 360
1 D3 N. x9 R* t9 N2 o fd 16 |% I8 @9 U; _1 g7 |
ifelse(other turtles-here != nobody)[
; t' b% z0 r* w- A$ B4 @   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 e4 }, |: y" J   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. {1 O/ i3 x" ~+ h3 N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 J3 j# u) i! `, l8 o7 i2 }
   set [trade-record-one-len] of self length [trade-record-one] of self
6 x& D8 d  j- J" ]( ^( Y6 s   set trade-record-current( list (timer) (random money-upper-limit))4 d1 _6 H6 z- a$ s7 C! T3 N2 N. H

0 [0 Z" S; i3 b问题的提示如下:
: J/ w% S1 K! e5 q; A$ p% y6 a* n& @/ W
error while turtle 50 running OF in procedure DO-BUSINESS
/ ^; e4 y8 x, P* ]8 w9 [  called by procedure GO
& }9 M7 r5 s7 U& p: n7 VOF expected input to be a turtle agentset or turtle but got NOBODY instead.3 ]8 {8 ]3 w- e! Z3 u
(halted running of go)
2 L. [; a  u+ u0 o% e5 J5 _/ }: c3 `: }/ n( V
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~~
- K) T+ m' Z" H; P8 O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
2 k7 {; s9 O: X( Hglobals[! K+ [* @: h9 t+ x6 k
xmax
& B9 D! j& O* K5 D! o  Xymax2 u% m5 j5 K  g8 D+ X/ v
global-reputation-list
4 J% G. ]; V3 [8 E  @
0 s# M) \& j' G# Q;;
每一个turtle的全局声誉都存在此LIST
  J( w! x1 W' a0 _credibility-list
( x& o5 C3 {2 T, v% E;;
每一个turtle的评价可信度0 ~( j* E- ?! j! E# S
honest-service8 g  N0 _' ]6 @# S. w
unhonest-service4 D- E# G* e6 }, e$ J  l
oscillation
# b. K! n& x2 K0 Y$ ]4 F- m; Wrand-dynamic
1 d3 B/ ~& N: m* e8 a]/ h3 f5 ?% N. A& R% j
) E, x( [% [7 s6 C8 a$ y
turtles-own[
1 p% d$ h  V! t) B7 z) ntrade-record-all
4 ?+ X/ p" }0 z2 ]- O;;a list of lists,
trade-record-one组成
6 p6 E2 \- w8 _3 W6 ]trade-record-one
( [3 X/ w- M7 S  t6 a* W" Q- n9 G;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 s0 `( }+ C+ E6 M; s6 ]5 R
$ Y0 i3 o% D6 `, i2 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]]: A6 ?5 ]* X) L7 H7 A
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! x% N# O6 }" g2 ^/ ]3 \7 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. C8 k. S  w+ v# j
neighbor-total
+ Y+ F2 X4 E* D; q+ g6 R& E" k;;
记录该turtle的邻居节点的数目
% U0 w' o2 }0 ?% f2 o/ K" htrade-time
. j6 s/ ~! k" j. [; b# ]2 b2 m# h;;
当前发生交易的turtle的交易时间
( `) k, Y( z  g+ ]! Kappraise-give) y6 u2 ^) [1 Y$ ]6 I2 m
;;
当前发生交易时给出的评价
; c, \# r0 k% Rappraise-receive/ C) m$ j0 U9 {! [
;;
当前发生交易时收到的评价* K6 P! W2 h# l0 p# p' M& U* K4 h
appraise-time* g! x: Y$ R' s1 A- Q+ ~& m1 w
;;
当前发生交易时的评价时间& X4 y, F5 Y0 K4 ?7 b6 @; z7 l" |$ b
local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 ^% Q, @6 T2 `/ b
trade-times-total
* P( T8 V  x7 J; C;;
与当前turtle的交易总次数2 W+ H* _6 k# P2 Y4 Y% Y
trade-money-total
5 T5 K, M6 t6 u" U;;
与当前turtle的交易总金额- ~& @) |& T" U; E6 e
local-reputation" D' q9 U  |' }5 H! r3 \
global-reputation
) G: q& h; n2 y8 {  P" ]credibility
5 ?: A# @) @, M0 v: u! S) @- r$ G# R;;
评价可信度,每次交易后都需要更新
! R" N' D, a/ n: |9 G1 V. Mcredibility-all3 G0 v) B+ V: w: Z$ B0 X5 `# J
;;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9 u2 E9 C4 h! P

7 V: _2 O2 ?$ ^# D7 c0 };;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' D2 y" }1 e0 s# T' W% m( }. M
credibility-one
1 l: Q/ F  Q: H;;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* o: e; {0 \1 a
global-proportion
( @8 Y5 @0 u9 scustomer! a  w: K! V+ s1 O% K0 d9 K3 Z7 X
customer-no" t4 G1 e) [1 N2 D  y
trust-ok
  _' i( }8 Q- _$ l3 Etrade-record-one-len;;trade-record-one的长度" A7 I) z5 b+ }' U
]  W- n1 ^0 v4 `

  P0 a* l* N3 y) M; H; |  B;;setup procedure% M7 o; }: b9 ^. ^

+ i& I  A" o: Q9 z  `to setup; x; f5 k9 i$ q7 r* J: q, E5 M

9 t6 k* x/ G6 o( q, V% i- R, cca

% F. a6 L% T; Y) y" x/ B5 a+ C
initialize-settings
2 i( M) T! P1 z4 r* c
3 i" O; e  t# Z8 j8 A  }) F
crt people [setup-turtles]
! e7 a# n6 A: H4 @3 q/ j, D- j  k

! t, v& b: o7 ~  T4 v, J2 Breset-timer

! Y- d4 z5 Q/ t3 j" i2 x2 l! m7 `3 H, k0 O* v+ M0 v
poll-class
* m1 y* {. k% q

; Z+ i7 u  Z. {2 J% msetup-plots

+ ~) _/ ^' m4 `% b& q- h
# \3 b2 S) Z0 \: b3 m! X  ddo-plots
7 g# h7 e3 ]6 {
end4 e- @" }* O4 t$ f

2 [2 s2 Q  m  u/ R$ g. _) |to initialize-settings
+ z8 s( c  C1 [, ~; B7 o  d. S$ j& z' V
: z; {0 ]2 i& N4 }% F( e) dset global-reputation-list []
8 x7 C8 [: }5 d& k4 C( J

3 u5 y6 L+ B* W0 Vset credibility-list n-values people [0.5]
0 n2 f8 U0 O" ~- V3 s3 U6 u
( J; H% @  v3 u+ e  f
set honest-service 0

1 t: J3 ~% _8 H+ I0 k/ ^5 Z: w7 W$ d& z, @  m" _, Z" @" f
set unhonest-service 0

" U, \/ S1 R* `7 u5 K2 j. g$ W1 e" I9 N( R$ v7 K! T% t) F
set oscillation 0

/ g1 i( ]% j- [% R) M6 W1 \! {0 Q3 {) [8 e% T% d$ E* E
set rand-dynamic 0

4 \/ L& I/ W: o/ T3 Aend) `! \+ u. V! m- V8 j
8 [$ j" R8 r0 Y+ X! O( \$ y! t
to setup-turtles
3 ]+ c: e$ Z) O6 _, `* Tset shape "person"/ Y) L& s) A7 e& G& P8 A' B. S! [4 y
setxy random-xcor random-ycor8 }* ]' q! _9 r5 Q" s1 p, U
set trade-record-one []( t$ B; P$ v: U2 K' r6 t' u
2 B5 j$ P7 u; c
set trade-record-all n-values people [(list (? + 1) 0 0)] 4 Q/ m( R4 r$ r/ |5 ^+ T4 p5 T
  O5 T0 P* d* e/ K' c' L/ N6 ]" y
set trade-record-current []
7 E- r9 T! l" W+ |" n) }set credibility-receive []7 e* L8 U( I8 @% F1 u4 L- h2 Q
set local-reputation 0.54 |' E' Z( Y4 B3 n+ s0 U
set neighbor-total 01 C2 |: Q% E0 `3 h) c3 N* I
set trade-times-total 0
2 p" o! K7 d3 W# _set trade-money-total 0
: E6 o& i7 @1 V1 ^set customer nobody2 l+ w6 F! g3 j. F& l* H* i: b
set credibility-all n-values people [creat-credibility]
& E- T8 f( K6 Z; K: g1 hset credibility n-values people [-1]
- }( g% i; m* @2 k7 u0 Zget-color
, H; @$ v. Q& u/ c# ^8 t

3 R7 D- C& s1 \' f5 w; W( v4 P3 H" uend2 \6 A; {6 |/ I7 N

8 A+ ?% n" g0 [1 ?! j& V/ e( Rto-report creat-credibility8 f! K+ o0 e; ?( I, x
report n-values people [0.5]" a" d3 [2 m( |; M( w4 M
end
4 i, ]9 v3 }3 v7 E+ l7 O$ r3 {# X3 j9 ^: u% g8 O$ n
to setup-plots  k" _( J) m: K6 M$ C3 k

. l5 q0 s# l. l3 D! |set xmax 30

2 [: Q4 L6 @4 g9 ~3 h  y! I
# v5 {& e( T2 B) {4 Dset ymax 1.0

# J  p7 b' b* ^/ a9 w# h3 d% n
: l$ ~& c1 r" J# e! d1 |clear-all-plots

: ?+ a" t# {& d% h4 l1 J6 y
  D& L5 p0 ]( n2 Hsetup-plot1

2 }8 A4 N+ \' K& [4 r
2 `: }* R$ d9 r# Fsetup-plot2

" v, j) o  U! {, u6 `
0 T8 p9 q7 C0 Usetup-plot3

0 M( y, ]1 W- p' Z6 dend% b# b% N+ p5 x

5 r6 W/ C) f  a: b% y7 r- R1 m- ?;;run time procedures
1 H0 E% _5 p' ~: g( O% P" _
' A0 M- ?6 D% t8 l" gto go5 G- E9 j7 ~* k% T! H  @
4 l# j2 D+ b  T; X7 T, H
ask turtles [do-business]

% `2 Q9 d% }5 ~end  z% h) ^8 {* ^' J6 o5 t; @

0 O) g- I" D5 }0 l  F$ r& Tto do-business
2 y# V+ Z4 K8 l! O0 A* s; t1 p
! d) d8 e4 k' p

* c. z1 q$ r7 C% ^rt random 360

# a4 {$ ^) b) @2 h& `8 n: x$ x9 g- {: ]& p, m* z  F* h1 a3 D
fd 1
, T' L+ S* P. o. i
  _4 y9 R6 z' I) X+ k0 l
ifelse(other turtles-here != nobody)[

4 r8 U1 D# q. X1 b3 Q! F5 G3 s1 n: K, s$ t- \8 i+ J
set customer one-of other turtles-here
% h& m+ g* I" x2 f+ P; F% s( j

$ G  m! t0 ^8 R/ G1 W;; set [customer] of customer myself

# [2 e' h) t- V2 W; V& V# S8 r  W0 M: `. ^
set [trade-record-one] of self item (([who] of customer) - 1): @9 C5 w9 m6 x3 X
[trade-record-all]of self0 \# `6 e& K9 U6 a4 M. V$ i
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  o! h7 {/ t  q4 R% G) ~: |  L
: Z. e$ k# `/ N3 u/ d! {+ cset [trade-record-one] of customer item (([who] of self) - 1)
# B3 A; J$ ?& _( y8 o[trade-record-all]of customer

1 @# }! m4 j; u0 o# h' Y0 ~3 \1 O+ p
set [trade-record-one-len] of self length [trade-record-one] of self

5 p" H) A8 n. B8 t# L+ d* d3 x5 o0 a) M  t5 }
set trade-record-current( list (timer) (random money-upper-limit))

/ M$ N  k, G) N1 t5 ]$ x" A+ n9 Q' u' z% f$ {2 J9 |3 c  [1 S. G
ask self [do-trust]$ c: j9 `. V- \4 M% o6 o3 X& B1 a# y' X
;;
先求ij的信任度
# {. }- v2 m( p- t" q0 q/ O7 m
9 X1 V$ m$ b) g" q1 [0 _4 Mif ([trust-ok] of self)
8 a) ~' @% Q) a3 C' v5 i1 P6 D0 f;;
根据ij的信任度来决定是否与j进行交易[
  m8 n, U4 _5 V0 d+ c. cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) d2 g2 D9 f% M4 y4 H7 r
7 h/ G! x  V0 D+ p) M3 @7 f[

. j1 O5 M! N! u
$ c+ U3 S4 u) O  @0 W5 J4 @* a* M, Ydo-trade
7 N5 j1 v' r( g7 n/ q4 ~* s9 L% u+ L

4 b/ k$ e5 j" hupdate-credibility-ijl
  B! y5 ^9 e, _( ]) _' o
% X: [: }5 w- v6 I8 k7 ^. P
update-credibility-list
7 u8 W) v2 ^- v* W

4 N2 M) k7 O; a/ J+ @% `% ~$ ^* Y$ k) I3 V, O
update-global-reputation-list
; `* y- y5 J6 L

6 ]8 v! E' K0 q( c0 M9 `poll-class
, ~3 W: ~+ t% B* S$ d, A4 o; R' g

+ W9 @* n1 x. j% Uget-color
" g6 Q# B, Y: T7 B

& x3 r+ B6 F. S( n' E0 Y# C5 a]]* K+ n9 _' @7 S; P- A
# ^7 w( {4 ?! l% H# w  Z8 b
;;
如果所得的信任度满足条件,则进行交易" B/ a( J# ~! a1 ~7 \  y

8 |; K6 x, ]+ a  {! d1 m[

& z! G5 g, p# ?1 x' @' j" F8 }$ G6 c* A- G' O; d9 d
rt random 360

" h0 p. q, N7 Y: S  }5 I  y& Q/ `4 W9 X
fd 1
% k( q- o7 o' I. l# Y% k
$ K3 j* }- D' [# e- M% ^
]
0 a# N# o+ w# z9 }! O
9 Z: w* w) C: C5 [
end
6 `. t) Z% W* x6 T: _7 q+ e0 \

  J" |0 [4 G: J/ B" _" oto do-trust
: b# b# O2 b7 u) fset trust-ok False
* n- b) f& W) i9 X# P3 N( r
1 d- N/ R' J3 L" V+ y
2 \0 t4 d- c9 Z. U. A1 f( l5 z
let max-trade-times 0
0 s& W% |! T- P, R" fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 o& E9 R0 E. y; ^1 f1 W  s
let max-trade-money 0/ k$ m6 y. H  m. `6 T
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; `! A8 Q% P6 ^$ T: [, K% g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ w6 R, l& C9 e$ O5 z# Z% N6 _+ u: r  ^. L% i
7 j4 ~+ O4 a# I( f0 F$ O$ B# v* R
get-global-proportion  T; ^( g. _5 e2 A+ t
let trust-value$ A: c: R3 U& F+ p
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)

9 C$ u( d5 s8 {4 r4 C: Qif(trust-value > trade-trust-value)0 W; `( P1 o2 f5 n* l1 c
[set trust-ok true]
: U. |* [# G8 ]end
3 f; s; ?; n7 U3 G% Q
  T. {9 f1 d3 z/ q$ _to get-global-proportion- ?% N  j" l8 c1 D8 l+ R
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 J4 b( {) n. c
[set global-proportion 0]* I. m% O; U  X/ w9 m
[let i 0
5 G5 j( I/ `: A% Z. dlet sum-money 0' E/ ~8 t- H# ^/ b# M" ]9 v
while[ i < people]
2 K+ ?% u: x9 t' a: T8 ][
5 i: b9 p9 A4 y6 U0 p* A  Aif( length (item i8 b" [) t3 C2 c& h
[trade-record-all] of customer) > 3 )

2 i5 r6 N6 l8 N5 G  F9 {[. ?& {% k- A: n& F" M
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 M5 r( d; k5 D& J8 q: B; }
]. B+ L! C% `' e
]5 n7 w% g% l& `; g
let j 0
  i5 V4 t( V8 D3 `1 L! Zlet note 0
+ T; |1 W4 D" o5 L: }0 Z% [while[ j < people]0 G+ j# G5 X  ^/ s2 E
[- Z! L+ l) ]# p* P/ _
if( length (item i  u& U" i* v3 O7 V' S1 _
[trade-record-all] of customer) > 3 )
# A& O; {7 ~' O) H" j& L$ l- ]% W  ~7 e
[
% a5 D% B6 x1 {" P+ Lifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ q2 E( ~7 E! |0 t, ]$ O' l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 R+ k" A. h  u0 s2 B[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 \4 w7 ]* x( B  r" }- }2 V]
5 b) K7 s4 r4 [% t% N, T]# J& ^0 ^& k6 L' T; G) x2 Z4 _
set global-proportion note
+ J# F. e/ A4 @' l2 Q$ I8 o9 G]2 t$ I/ L4 ^8 q
end# N7 Y5 _$ h& Z! e4 {! `" ?
- ~! U8 h/ V6 }3 F4 b
to do-trade  F  U' D, r3 n9 R
;;
这个过程实际上是给双方作出评价的过程8 q7 T  u: ]2 ~( Y( K* v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 s5 j$ ]9 ~4 N" \; S1 fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- ^1 w4 s; w: W) Y0 @" P: Kset trade-record-current lput(timer) trade-record-current
# L" `" X7 L9 K# A;;
评价时间: ?. k9 ]; [# p! U1 }9 I
ask myself [
& A4 r# e8 v) |* J  gupdate-local-reputation
) j# u* v1 a( Q  a2 Vset trade-record-current lput([local-reputation] of myself) trade-record-current
6 C8 ^3 x$ V- ~1 H( X, w]4 X5 Y* f+ ~' J! I
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) I+ C2 [0 m/ M5 [, k
;;
将此次交易的记录加入到trade-record-one
1 z! y# E: M2 N* t3 X. |$ P# h* bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% b2 u6 i! ?  n! j, H6 V8 y0 N( P7 Olet note (item 2 trade-record-current )
5 y- c: l% A! _- ^3 Vset trade-record-current
8 ^  f3 b* c4 m" d& y(replace-item 2 trade-record-current (item 3 trade-record-current))

, d( l5 X& Z# Z) L0 J6 L) Vset trade-record-current# M: U# d' }  x  g/ W' d8 H5 R
(replace-item 3 trade-record-current note)
4 O! E& {) o$ B( W2 T2 H) Q/ T2 e3 H# W1 b) t2 S
+ k, U/ s) E* d1 e6 d7 R: u
ask customer [
3 E+ J  Y$ h1 g1 A/ u- z, r0 A: d* eupdate-local-reputation* |- M( l+ K/ l
set trade-record-current
: O8 i; P) S6 z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 ~0 r2 N8 S9 `' ]/ f% ?]
$ D6 e1 m, t; Q* O+ y! r9 G# j* ~8 k

* F0 \; t, s- x) ]% s  E. k  J) x( Zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ L* ~. o: ?+ S+ p( D* h5 a

+ v- Z7 ?9 ]/ m+ yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ ?/ E- b! C4 G) m;;
将此次交易的记录加入到customertrade-record-all
% a6 a. Z+ K) t! Y& ~end" t  u; A' t' t# W. P' m9 e
4 S% W6 `3 r% D' ^
to update-local-reputation
7 X6 ]; a1 h2 i. Vset [trade-record-one-len] of myself length [trade-record-one] of myself
+ m& {1 a" ^. ]" D6 u5 G& N4 p/ T( q- d/ _( F
+ V1 m7 j2 @+ `+ [+ u
;;if [trade-record-one-len] of myself > 3
* B! A  A- _6 ]4 R( L
update-neighbor-total8 t; |! ?% Y" L4 |" V' u; Q0 @
;;
更新邻居节点的数目,在此进行. K$ d; h& A4 ~* B  [. c4 T
let i 3$ [2 a+ G9 S7 g4 Y4 G# x' w6 p
let sum-time 02 z4 Z& G* T0 q( Y* U4 O
while[i < [trade-record-one-len] of myself]' }! Z! ~2 D& e: {
[6 e# f0 P1 Y1 p0 @- l# }3 z" s
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 o- I6 A. K$ t' a9 q& N- ^* Fset i
9 |7 O) V6 q  u7 U' S: K9 i( i + 1)
* A5 }, ~) b7 W' N5 A
]
% [" r1 y% O% h' @; I3 N9 _let j 3, I$ e: m' j% {$ a- v: ~
let sum-money 0
! j/ Q- |' h7 R. K# r2 A8 y# Z5 Dwhile[j < [trade-record-one-len] of myself]% ^  D. n  Y3 [) b
[  u& e% \, W7 j0 L+ X
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)* |0 t/ j3 L3 b
set j9 a  R. S* ]/ W: L
( j + 1)
5 M5 g* ^; \/ ~8 y
]
3 ^( \  ~, {- U4 Ilet k 35 e0 E' O0 n0 ^$ c. x
let power 0' @! s: l; N! I7 X4 Z
let local 0+ |# ?: ^) M8 g: x1 Z. K
while [k <[trade-record-one-len] of myself]
% w$ P2 S/ M; W. C, I- ?8 x[' P+ }4 H, _  c6 ^: a
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) ! @6 L9 S* G" ]& G) P  v5 E
set k (k + 1)7 @7 `. H2 c; s/ D: p
]
/ ^# @/ B' v5 |+ q+ j$ a, zset [local-reputation] of myself (local)" |5 v9 T1 H# h
end  B' \/ d. A7 A! A  ~( r" V1 M) F
" _- |- j5 y2 c0 v) Q( z3 K) f
to update-neighbor-total# x9 g# B/ v2 a9 }  L+ ?
8 g0 {7 c& R% K; z9 A7 G
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- B& X0 C7 U/ D) p# J& [, l% Q: b
/ r, z/ s/ N7 s
  O, a8 B% |& c* U' z% z- n; L3 E. ?& \
end
: j8 |# C% f  Y7 m7 J6 W
& U1 ^" Z4 s" F* x9 M' W, `8 ]% p# Eto update-credibility-ijl $ m+ U# M0 N6 T
$ D6 S5 S8 j" F9 e# k' `
;;
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。. `5 D6 D5 y* T  T! I, F
let l 0
) x8 p0 B$ B- y5 y2 pwhile[ l < people ]2 j& o9 v9 k6 e* R! Q2 _6 }+ ]
;;
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$ J4 t" S/ Q) W
[
/ L$ B: L! S) X* M" d0 [7 ]let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ o) I8 r4 p  A8 U" [; kif (trade-record-one-j-l-len > 3)
% b: t( }% g* \1 {1 z/ q[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% B4 S7 F9 w5 I$ Z+ Z" g
let i 3% K& K7 \& f0 V# q3 r
let sum-time 0' Q. O1 E& S* S
while[i < trade-record-one-len]5 R6 b8 {3 l4 }% M# a1 j, k; E
[# ~$ J# y/ g! t; m# G5 O2 r- ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) ?8 |2 m, K: i) R/ i" W* F. dset i6 L5 E7 j. }6 U! q( Y1 O/ A
( i + 1)

. l( ^7 _) w" k: r" X' i: d" E. R]( H: J: Y. l7 H% N# f
let credibility-i-j-l 0
# }& F0 a+ e4 X& f: C;;i
评价(jjl的评价)
  p* T! W' |" C( p8 U7 Plet j 3
( d: T, i. T/ L1 klet k 4
4 |* k+ v  k; }9 ^& |while[j < trade-record-one-len]
! E1 s' d, g' B8 [. q5 f[* d* ]# J+ v% _
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8 }4 F2 e  [3 J$ ~2 w- M8 n( P- o
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)
; D* M5 ^% t4 r) u2 @# ]( `" W5 _set j
6 E- `  T' S# p4 A+ N0 }( j + 1)
0 U- r9 q$ B5 ]5 k$ M
]
- U2 q$ C3 ^% x) f) o8 p+ C, Jset [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 N) {: P9 B2 Z# c0 R9 e% Z1 U9 t  Q; |1 o6 I4 }& \' ?
! ^8 r/ b* ]+ f
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  M5 u  Q8 z( o4 W" {;;
及时更新il的评价质量的评价" H- x( j3 C% }  [/ |& j/ d
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 s5 [5 F8 A0 `: f
set l (l + 1)3 Z" D0 H4 D. h
]
- n7 U2 i3 w& _end5 V6 P' f3 G' y6 ^" P
* K% T9 c. Y- W: C6 O! [; x2 u
to update-credibility-list
7 o& p2 O" s0 a, G( t7 K0 b8 tlet i 0
" F+ p9 l- N7 f& b2 h8 L1 bwhile[i < people]
4 H: d& N, r* {' Y* @$ q! l* x[
" _$ u7 ~& [( ?7 P; A; w) Ulet j 0' ?/ G! y7 r8 k# m! `
let note 0
6 h! |5 V" J" x+ Tlet k 0: t7 `# I$ i7 c  P% I! P9 M
;;
计作出过评价的邻居节点的数目
7 v7 J" \' v( B1 Qwhile[j < people]( }8 N% a' }$ K+ J/ {- V
[
+ Z" ^2 S: P2 c- Zif (item j( [credibility] of turtle (i + 1)) != -1)+ K$ Q5 g4 @- z& `
;;
判断是否给本turtle的评价质量做出过评价的节点
( C7 y- L8 `) k[set note (note + item j ([credibility]of turtle (i + 1)))6 z) `% g) y  ~, i2 s0 \1 Q
;;*(exp (-(people - 2)))/(people - 2))]
- f$ g+ Z0 }7 x9 _6 }* n
set k (k + 1), b* Q7 d# {; [: X; M2 n
]
. r) ]' }4 U( X% K) |set j (j + 1)
) w' _( t- d- s& i' O7 z, y- J]3 L7 V4 r: {: m0 S' }/ S! k1 O
set note (note *(exp (- (1 / k)))/ k)* ^" V+ T1 {/ W- F
set credibility-list (replace-item i credibility-list note)4 \* W/ E" M: n
set i (i + 1)9 y2 j/ s; n/ g# K6 K6 V$ s) C6 r! ?
]) y4 o' U0 Y) N+ d7 x$ L+ b  Q
end
% H9 L9 L1 T1 S' J2 U( x# _3 N# K1 H
( l" |8 u; H! i  @& Z. ^& Fto update-global-reputation-list# R1 A4 d0 s5 X. d  Z
let j 08 [6 L5 X2 {4 I6 a, M7 _# U5 }
while[j < people]( w! f  Y8 ~  Y) L- d
[
" F1 p/ @6 c+ d) [1 r- i% n0 |3 P9 v8 ilet new 0
$ }; z, F8 g3 w2 Z+ q;;
暂存新的一个全局声誉
$ Z# K9 j! t0 p5 z/ o, {let i 0- a# `/ b" O% W0 a
let sum-money 0% a" ^2 r) K6 p# f/ w5 R/ E8 J) i
let credibility-money 0& g" k6 n4 m1 e& F+ ]
while [i < people]
+ B7 k) J. o$ N7 ^8 }2 X[) a& _8 ?# I7 J
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 A2 p5 n# a' V( f  d+ k
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), \- r0 T" Z$ W4 I& E
set i (i + 1)
8 s# ?' w8 Y" E9 Y  r]
& L( {1 M$ t$ _. r5 R. Zlet k 06 |; `; \$ c5 w0 T$ J2 T# Z1 P
let new1 0
! O% Q, S& S, B9 x, o+ nwhile [k < people]
- \6 m4 x) q* q$ R3 i5 n- v. f[
9 e# i3 |+ g. S2 M2 ^% J( cset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)  U% h2 I3 o# a9 `! f% s
set k (k + 1)0 t# R3 x- ~. m
]
( t; d2 I& ]! F: wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 l, ]7 Y. X0 Xset global-reputation-list (replace-item j global-reputation-list new)
5 |+ N- O2 G8 T- M% p3 Lset j (j + 1)
5 d) Z, ?$ ~2 r- v], G  F9 z# O1 O& J) s5 k
end
. Q" o# v2 {) v+ e: j& k
' g) K% n& i% Z7 n2 r) E& o1 |- ^
3 w( V) S' ?# y
+ V" W; F/ h& H; S$ h# U5 Hto get-color
) G* Z4 }& |) c( [/ r" }* m+ _5 X2 C8 D
set color blue

6 H5 |7 I9 _- ]2 @6 }end5 x4 Z( `6 y0 I7 w8 K. ^* t* p
" i: T7 [3 h# Q: E6 w! m2 h5 N
to poll-class
# }4 g7 d5 S7 p7 Kend' ~+ {: j$ ^3 |* V
4 U9 b' r  h( c' y2 l7 _
to setup-plot10 \) d3 k, I6 S9 {
: l. H: Z; Y+ v2 K6 @0 A) x
set-current-plot "Trends-of-Local-reputation"
, x; u: `/ }( [9 M3 z; Y& e2 w

' s5 K3 ~& }' m$ r8 nset-plot-x-range 0 xmax

9 _4 [" F6 w2 S( _0 S; S
' L" U; y6 N, ]& T+ fset-plot-y-range 0.0 ymax

/ u9 R- \2 ]9 N6 ]% |4 x' f; {end
# a7 `( }8 x. `8 q. a  w8 c# ]
0 I+ ?- ~# ~' S8 Jto setup-plot23 A8 c- W; m& N$ z: W* h6 y$ F

6 I; V6 j+ v4 T1 x4 g. |; i+ nset-current-plot "Trends-of-global-reputation"

! |* B' ^2 r) g) u& n  Z& w
+ J" i4 c, W% n1 J8 gset-plot-x-range 0 xmax
9 g; a/ F" f' n* O
5 l; \5 D$ ^4 U: {
set-plot-y-range 0.0 ymax

' d9 G. M) A" U9 q8 x4 Oend( I1 u) w$ v" U- T( M

) {/ L% x" G/ J! gto setup-plot3+ S' \) [4 O1 Y1 |8 @- x

8 D) l8 `/ Q% D3 H" cset-current-plot "Trends-of-credibility"

" N5 H4 p& H& s. D- ]$ U5 [$ s3 H5 Q: c& @- z; f$ x3 Q# x
set-plot-x-range 0 xmax
% Y0 d1 r6 a7 o4 Z1 c

! F3 [2 E4 L: C1 x1 ]set-plot-y-range 0.0 ymax
3 Q. m0 p# W* k
end
) i# w3 F9 a- ~
5 y( B: o( u( M/ P6 Q& \! Sto do-plots
6 {$ ]/ I; j8 G2 P! n# Q% {( J/ {. Kset-current-plot "Trends-of-Local-reputation"
9 C& h& Y- r& |8 rset-current-plot-pen "Honest service"' q+ A4 f8 ~. B) _# u5 r, F0 k5 F6 }5 `
end
# a) h# `) [6 ]7 h4 G6 r8 H0 q2 [+ C5 g, K
[ 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.1 b2 j! e4 w; l7 G
- f; S* ^6 L. 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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