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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:. a8 g% I# g5 d
to do-business
9 o- i0 f8 T/ Z( u+ V. k rt random 360# Z( N! y) e) i, a, S! @
fd 1/ A) P- h. m) ^; e% x
ifelse(other turtles-here != nobody)[  O  c3 M1 O7 x
   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.
" u$ s$ ]+ f( b4 `   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) ~* K5 T1 n9 Z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: z6 w- \$ l$ y# S6 I1 y" _  H   set [trade-record-one-len] of self length [trade-record-one] of self
: v3 S& z+ O' f7 Y6 t; [4 `# O   set trade-record-current( list (timer) (random money-upper-limit))/ {2 A, w" H; h2 i; }3 E- Q) \

- j. U" I4 |$ u+ v- m$ b问题的提示如下:: M; i( J  Y, u& |

8 `$ p  P1 c& v+ F9 Zerror while turtle 50 running OF in procedure DO-BUSINESS
! \+ c# |/ J  [  called by procedure GO# w( \( T7 U# Q! ?
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 m. f1 i6 U; W
(halted running of go)8 x/ c3 i3 s8 p3 R1 Z8 x
( {& z8 |3 W" S! M5 u7 ]. Y
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~~
# }! u+ O0 s$ f' w8 I" E/ r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  x% L& o. p% z; A
globals[
' |0 R8 z7 T1 j* g: @) [, m- r* Sxmax2 ^* q/ r, k3 C
ymax
$ |* r$ p3 Y( S4 I% a: _global-reputation-list5 ]; b+ j# I7 U% h& T
1 g: d2 P0 S/ W' `, C6 b
;;
每一个turtle的全局声誉都存在此LIST3 M: _$ ^0 D9 R, ?0 V3 C* A
credibility-list
1 o5 C/ Q  G, ?) a# Z+ s;;
每一个turtle的评价可信度9 r& F7 B) m: s2 q
honest-service) M: p5 c- S  }2 ~: c/ J( J
unhonest-service( m9 W: W, P, u' c
oscillation
: A7 d5 W  [: Drand-dynamic
1 B: S7 C: [+ q2 c+ ?]
0 Y2 `! ?9 |1 t* g9 P! g1 r0 Q& }! y( |9 e  ~9 k" e3 x
turtles-own[
" P+ ]; ]8 u9 ^$ w/ j# Xtrade-record-all% ?! P4 I5 l5 x/ `
;;a list of lists,
trade-record-one组成
) X7 c: i3 e6 z' E3 Ntrade-record-one
9 l+ F; O" a" H, v( G2 |;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ V5 p# e7 a7 @: h; i' s6 `5 m+ p+ r& D' h- n) p. ?+ W) {+ e
;;[
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]]4 ~' \" A+ o+ k/ ^& X
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]
; W/ O7 h$ a. dcredibility-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
" m* a+ u( k1 ~0 N: uneighbor-total
4 I7 e, S- d' r( O;;
记录该turtle的邻居节点的数目2 F$ ]  e' R  n* |4 V3 [& q
trade-time
4 W" ]/ m& l+ |+ f2 h7 m: I( V# a;;
当前发生交易的turtle的交易时间2 P# ^/ w# u7 v9 ]) W
appraise-give
& C+ d. s7 E3 h5 {;;
当前发生交易时给出的评价
/ F5 a' C4 L4 d+ nappraise-receive+ _6 x  m& {* S# y  m8 o
;;
当前发生交易时收到的评价
0 Z" Z7 w/ k4 ]+ Oappraise-time( T- E* ]5 I, [' L+ ^
;;
当前发生交易时的评价时间
" f/ D* U6 B6 j1 G- elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉* g$ g# n) g9 w2 |3 j- Z* C
trade-times-total
( `( t  C' S! J  i;;
与当前turtle的交易总次数9 q7 x( F, l; u2 t2 ~$ ]
trade-money-total
- b8 g7 T; m9 _* H;;
与当前turtle的交易总金额. m1 x$ z$ o6 m/ q
local-reputation; X6 B$ z" f! g$ F8 ~( B) G
global-reputation
7 Q3 d! q; L, g& o& [credibility
' |* }4 a  ~, x, L) A+ D) s;;
评价可信度,每次交易后都需要更新- c6 C. s& U8 x; j
credibility-all
8 I; y) X5 M( D% q; I;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
& e& m# Y' J/ X6 H, x/ s
: n" j7 y2 K0 A5 O" L' |;;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0.58 s$ r( D, @6 J6 {2 U  e# U2 t
credibility-one
/ E: G5 r+ \9 \3 W7 z; 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
4 l* t9 V* }+ k( Lglobal-proportion) u. D% M3 m# Q1 O; e* b7 o
customer# z$ _; t; q  K0 }5 e
customer-no- `# {: X+ X' N; _7 a! q
trust-ok$ @* \+ V$ M) u  V$ {' E+ x
trade-record-one-len;;trade-record-one的长度
- E7 ~3 F9 i) |5 @]
+ |2 i3 Q7 f8 t- ~; s/ e/ y$ C& m! C+ f! E: ^
;;setup procedure" K- \2 |% @) Z; A

: l, K3 K8 S) O  Xto setup! M9 H2 O, ~* B
- T, y* Q: W. k3 k
ca

$ l8 }8 J5 J. H4 J& ], T! T/ |0 i# P4 G
initialize-settings
4 J) a% C: c- A4 ^! c8 h
( W) m! i$ y2 A' o( Q
crt people [setup-turtles]
* X+ h. k& A% d" G

+ ?2 Y4 S0 `7 X  }reset-timer

; T% H/ ?' n' l* R, V% o, K2 h0 p5 `! @3 n# W) R# @+ N" `7 @' p
poll-class

- @4 S) E. Q) h) P; T/ ~* w) N6 T7 v/ K7 O( W. Y6 u& {/ a
setup-plots

5 B0 e+ b+ \  @$ m( t1 u
. X* d+ Q, x' f' Y) x, Pdo-plots
! V' p! Q, Z/ I
end* [, ?( f. b; b
7 k. Y; D( M3 M9 j: S5 q  q* K! z
to initialize-settings
. l% c( [: d$ V% ?) C& k1 k( n) D6 D5 T; s8 C
set global-reputation-list []
' M0 v' Z/ J5 l6 J. k

4 R5 p) e. t( G& Yset credibility-list n-values people [0.5]

* O% M% `2 S8 X) }+ T% B8 r# u2 q& x* Y( _" F+ C! i& r
set honest-service 0

+ u+ D2 D7 R3 S+ n4 [1 l+ k( a
$ _& L( z9 R) ]set unhonest-service 0
% w4 U( z5 I/ V: d* R7 t
. R* l1 K5 j" V! ]  r' b
set oscillation 0
4 \; a& {! {/ h1 Z1 D
6 y3 U, K: l' h( L( E5 G3 Q
set rand-dynamic 0
1 K1 I" \' K& x# A6 Z# w
end
5 ^; Y" R+ l/ s( ^. ?( p  ^8 _" g. p1 w) M
to setup-turtles & s8 I6 j; n4 ~* t& m) @: Q3 [
set shape "person"
9 Y0 [1 e, R3 E, \. Dsetxy random-xcor random-ycor; O( ?$ ]+ U  \; B- q
set trade-record-one []1 }! j/ r7 h1 D$ J; A, N
; q2 ~! s% ?; @
set trade-record-all n-values people [(list (? + 1) 0 0)] " g" f7 r  R( b: H1 s: I& [: v- t. o
3 a4 ]: \7 f& ], L' ]+ `
set trade-record-current []7 k" g" O- _5 v! D& M* p
set credibility-receive []7 Z1 W  f# P: S- R3 R) t& j0 o; r
set local-reputation 0.5$ x3 e/ C1 q+ o+ K4 @0 l
set neighbor-total 0
2 U/ a. Q9 J: @$ pset trade-times-total 0
8 M) E+ J5 P" P/ Z* ]set trade-money-total 0
) E: L9 \4 r4 E' ?  Hset customer nobody* |9 \# |  P2 p3 I, z- ^8 v
set credibility-all n-values people [creat-credibility]
2 r$ i$ Q1 K( i- f5 yset credibility n-values people [-1]
, i! t& Z1 e' k0 @: h% i. Z8 i% [! Vget-color
" \0 J: [- j; d& a0 d

& t$ q0 o, T6 T" {end: V0 F) C( A% k& O5 g3 `$ {1 M

8 ]' v4 g' z( R0 |' r: V( f7 V7 p8 zto-report creat-credibility
9 R1 w, d# z0 b9 rreport n-values people [0.5]6 Y( u4 h3 y* G  i" ^3 h9 U
end
3 i& g" s& H8 U8 z, G6 C/ m; {3 H9 O2 p7 \3 S
to setup-plots
% Q) G7 H# j, C! e
  L7 H& K- a: S( U+ z* mset xmax 30
4 E, o$ _& S7 N0 I, K9 h; V
5 `$ o4 Q+ s; Y: D  X
set ymax 1.0

6 @2 B7 y4 j5 D, D- T/ Y
& Z9 N/ H) D: ?: q6 [; P$ Cclear-all-plots
2 }( f, ?8 |2 ~2 b

) u2 E" b, c% b6 ssetup-plot1

7 ?! h4 n/ I0 J- f& q% I
  S5 F$ q3 m) m' p$ A) {setup-plot2

! i# v$ F1 X3 `+ _- h* B; b% B, I5 T4 ?* Q. s. D
setup-plot3
' R+ B+ S4 {1 k  I/ C" Z8 P# `
end7 y5 I6 e+ ~+ X2 S
/ E- q% M2 |1 ^$ f
;;run time procedures
9 s- _1 P, r7 V! B, q
4 U. y1 M1 S! h' ~0 O, c; pto go; [2 \$ k! V! _4 [
7 N  r+ h. P1 O0 T0 _
ask turtles [do-business]

5 k" z2 f' I; h( s. \% ]; }: tend$ z! y/ c2 u$ K* y5 v" e' @3 B

& f* u6 P$ X; w* [0 kto do-business
. B* _( {, j% V% }+ r  R
0 L) _. x5 k, E% d' c0 E
- ^* p: D$ N$ j' r, B# Z* C! P
rt random 360

3 k% A; m- h& [5 A3 h. u, p/ r
  k5 |  e* L9 j$ V" Lfd 1

1 Y  v1 t5 y) `. A+ a; W0 b% I( R1 h7 P9 x- ]2 l0 [
ifelse(other turtles-here != nobody)[

; x; r" [) d: h6 n( s7 X1 R" r; y' Q! z6 Z3 h
set customer one-of other turtles-here

0 n, g8 S4 e# @7 w
# O7 ^: ~: ]8 J9 l* N4 ~# w;; set [customer] of customer myself

# g0 f# E" E4 J+ w& g
! w" _5 e6 b- a& i. Y4 M" Vset [trade-record-one] of self item (([who] of customer) - 1)/ y, `2 g: S2 @
[trade-record-all]of self' U# }4 A5 f$ S4 f8 q9 o! K9 i4 c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) y9 Z5 @& ]8 w9 r+ n7 v6 S5 t( ?: p$ m( _
set [trade-record-one] of customer item (([who] of self) - 1)
  Y; B/ ~& m# ^. n" O- l[trade-record-all]of customer
9 ?! p: q/ w+ K" X3 n2 t
. F0 w7 V2 _) C$ r& B
set [trade-record-one-len] of self length [trade-record-one] of self
$ i( s$ e/ ^/ K$ p+ X- z9 e

7 X4 ^# y; B. ~2 G8 j1 B3 [$ e4 L, @set trade-record-current( list (timer) (random money-upper-limit))

( m/ s. j' d2 K4 y+ e0 }* F1 i2 s; F
ask self [do-trust]" r: R6 ~) f) Q$ N1 q
;;
先求ij的信任度) ^1 g% p; x+ Y0 G% i! A( f. x5 B

& I4 d$ w9 H; ^if ([trust-ok] of self)" U8 q1 B' v0 X6 v' z' H" |
;;
根据ij的信任度来决定是否与j进行交易[
3 u0 m! r' s; N1 v7 kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
% o4 e! L3 n% ~8 |; Y4 _8 ^' h
  x; D: q! m$ ]( r" m8 n$ L' F4 l[
# _: I9 Z7 q/ F8 h2 ]

4 g7 O" g+ t& o" `2 |& u2 j& ]do-trade
7 a+ u& ~+ A) Q4 u' |
& S# |( \- o' V; Q" {2 C% x
update-credibility-ijl

- G1 o$ {2 ^7 O* X) k# O; d9 F$ O- L3 o9 T' H
update-credibility-list8 A4 s) T) x6 H5 ~$ j  b7 ~) f; R
; D% p8 g, V# @& Y* S' d3 \
2 v4 c. [, u$ b- H
update-global-reputation-list

  |! `0 j/ l! i: ]9 j  d% R
" i; q; z/ z# W% A1 Lpoll-class
9 T4 ?7 Y& i  u& ~8 M

' O) l; z& |% ^6 a& `* @get-color

; [1 V: b" A9 \6 M' n7 x. ]& `! Y
# G2 N1 a( c4 b]]. i4 E  z) K+ Z/ \" g

: ]% _& w, y. a# L  H7 O;;
如果所得的信任度满足条件,则进行交易
7 e, a& L* V0 h; k, v: ~! ~9 [) }3 t& Z1 M0 W
[
0 U7 w8 |. w6 l1 K

4 {9 @/ f( l# t% ^" p- V% |* i  lrt random 360
* ~6 s/ Q3 q. y5 a5 @) Z
' m& Y1 h: {7 G! k3 E- y& l" r) h
fd 1
+ x, X7 V$ G$ F

) X) S4 R& j2 V7 W, j; q. Q]

3 m: v3 b' [& x. z! z9 ]4 n" ?1 ^6 W+ R
end

$ y4 s4 ]+ \7 l6 ?* z. D
* U# C, m- v2 Wto do-trust
2 t* f- L" H, ]6 E& y  R/ g) M: Zset trust-ok False
2 d( T8 z3 r) e8 U2 X2 p+ o! Q* d# X6 c8 n2 q

( Y' M. h+ V& W% Xlet max-trade-times 0
+ d2 ^8 g* d; i1 I; M; cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( T  e' c, E# B$ P  m
let max-trade-money 0
  t- n* D6 R0 ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ B, [4 r0 `* ?; 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 L' Y; J) r' u* P" s' g! ]+ {+ B  W% ~: x' H

0 i# H8 l$ a# x+ L* M! P2 O% Iget-global-proportion" U2 c. J3 _/ T; A# A
let trust-value
- x% l4 g4 c' x5 H( `4 }/ U: `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)

7 I1 H. {! e3 Mif(trust-value > trade-trust-value)0 Y7 U6 m' n; g  ~3 D4 a
[set trust-ok true]% @  L% d+ k, G) t" K7 l$ S
end4 M* m# T0 f6 B2 F# `8 l

. W; o) u/ E3 Cto get-global-proportion
* }9 {2 R+ y8 uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ p* J4 }  A5 Y1 _. l
[set global-proportion 0]
' _) O; [' r0 b( T! L3 J/ ^, C[let i 04 F& q2 F6 O4 R- Q% Z
let sum-money 0
# I% P; C& L5 Z( Bwhile[ i < people]8 W6 o5 d  x4 D( C
[0 h* }- D4 ~0 {  W# Z
if( length (item i2 A7 f% U9 n; n+ P6 g+ w
[trade-record-all] of customer) > 3 )

+ u% ]- O2 M6 ?$ i1 J[
2 z8 |, C8 h: ]2 ?$ k9 Pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))# `/ d  ]5 G6 `+ m" P7 {. d+ A9 q
]8 u/ L! ]' K: R' b
]! t9 i1 T% A4 G# o' w9 Y
let j 0# s7 X/ N$ D" a
let note 0
4 G& ^7 A/ j- u" e5 J' x& t' A/ Z; Kwhile[ j < people]
$ i6 Y9 N% n* `- e[
# O, F4 p( ~# j# Jif( length (item i
" P) U+ Q9 D7 G" L. w/ s8 J8 k[trade-record-all] of customer) > 3 )
: Y, I. u7 ?- d2 Z* X
[5 ]5 t# T2 x, z/ N4 |
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 |- z) _4 Z& ~; Z8 q& z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. |( C) w- G# }! y0 U6 s9 R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 T/ z  j" D8 h4 i]& b% w! Y' `! {. n
]
* H- X- |& N. \1 Z/ wset global-proportion note9 ^* A9 L+ R* C4 p4 ]' B
]
8 p+ L9 g; ?1 ^5 H5 Hend7 W0 F- U/ v  P. J, V

6 X' i1 f1 ?( eto do-trade/ _1 v& V+ I' q0 G  J4 S3 q8 W
;;
这个过程实际上是给双方作出评价的过程( d' k5 f+ V: l8 h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& X5 x! K9 C* \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- X/ ~: Y& Z) ?( Q. d2 |! `5 \set trade-record-current lput(timer) trade-record-current6 W$ X1 y( X6 ?8 q
;;
评价时间
3 ?, V( a( ~' g  X# W* p* |ask myself [$ w1 f- I* f2 g6 ?
update-local-reputation- d- V  Z, f" W! N1 V5 `
set trade-record-current lput([local-reputation] of myself) trade-record-current4 O7 y6 k. j) Q) h. c" N
]4 o! x9 c1 d, b; q( C
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 Z  _3 c  p, `% X% R4 Q
;;
将此次交易的记录加入到trade-record-one. `1 ^+ i; v8 |
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). b1 U4 r. I; K
let note (item 2 trade-record-current ), l6 m0 T9 o( {9 d7 r; j
set trade-record-current0 A) g( @- a6 z# e* k; n. H$ \
(replace-item 2 trade-record-current (item 3 trade-record-current))
, d* A3 s/ E- N+ O
set trade-record-current
# Z( F1 T8 M2 e) O5 S* t(replace-item 3 trade-record-current note)" J3 R( z/ P2 |6 r, u; O# A
7 y& a7 \. h6 l, N
6 z* Q; w2 M2 p- `% D( S4 M
ask customer [' q4 r, Z; Y# F" k3 B$ T* u$ T& v
update-local-reputation
/ m! x6 }' U; k$ D4 J& @7 {* lset trade-record-current$ h6 [+ M$ }- l0 j6 ~5 q$ Q# h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* D( N( _) c) u7 M& f. J8 T
]0 X7 X% z1 {8 j! |

  V% V3 |' N% h& Z2 h
: J* K" ?+ n0 K- l3 t
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  `; O6 |9 R8 T* w( n( ^
0 u: }; ~+ m8 K2 t: a* P! ?
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 \9 I: ], V& J# W5 Q7 h;;
将此次交易的记录加入到customertrade-record-all
! D% n8 Q. f5 O) W( Uend' ]: p4 a+ U  s; k5 U% Q) U9 F: K- d
- t* A1 E- k% a/ P' q" ?9 e
to update-local-reputation2 x4 I! r% }& @; h+ ^: ?
set [trade-record-one-len] of myself length [trade-record-one] of myself
$ v- P: P5 i1 P# i- ]/ w9 E* I
4 N3 p# V0 O/ l- ~( q% d: X: ~6 v- |( C2 u& b
;;if [trade-record-one-len] of myself > 3

5 X- R9 S) @$ d" iupdate-neighbor-total
+ o" U- k0 z$ ~  [8 Z;;
更新邻居节点的数目,在此进行
" y. a, }- A# |0 ^# j6 L- U( G; O; Qlet i 3
$ `4 L# Q( H% s* C" jlet sum-time 0
, i5 E; _8 U3 Fwhile[i < [trade-record-one-len] of myself]( I4 D, n6 ~8 B9 t) n; J
[
4 t6 \* e$ M/ z, |( E  j. e$ j, Y6 g3 Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 ^4 [' }' H* |& z& v
set i
9 H. J, G" G8 }; `  p) N( i + 1)

7 f- h7 x2 l4 g  H3 E]$ S; f' }9 I5 I0 J7 h
let j 3( I1 I! {" |4 y2 e4 f' f7 A9 l
let sum-money 0
" C) k7 `) T8 hwhile[j < [trade-record-one-len] of myself]
5 Z" l/ v6 A* |( i$ e[
2 C' w6 s7 l, B) C, J1 J( h2 q; _% Dset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)1 J0 H! e' e- d: I& b) [
set j" ]5 b- q% e, x! a! W
( j + 1)
, J3 t4 E3 {, L* a8 n) W
]
* l5 ^3 s; Q; g0 F, ulet k 3+ m8 U. u# O4 l; i
let power 0
& e4 E( _- W! F( Z7 v# Hlet local 0" ^; q5 @7 j  e* c
while [k <[trade-record-one-len] of myself]8 G2 j  v. O* f5 p5 E) f
[
0 Y) r  s# \+ Y' ]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)
  b" X) _2 n; x$ Bset k (k + 1)
8 Q- i% d2 F+ c]
2 K0 K/ u% v  o6 j% Fset [local-reputation] of myself (local)
9 K/ z2 F, y% s5 y7 e4 {end; w5 g0 u1 I2 i) T: A

( b2 W+ t0 I$ z$ ^# q; A7 |9 Kto update-neighbor-total; g4 o* E. U9 p2 b$ I. i
: s6 Z3 z0 G% U- `% H* {3 J8 J
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]1 P7 D7 w) p4 w' l. `, D5 v% u
4 X6 e' \/ e' g
4 L- t/ L! I. M3 k* n( u
end
, j/ J: U/ Z; q
! _" B  W1 y$ j$ e% @% eto update-credibility-ijl
% c! s0 R$ N" c6 {2 N) \2 V  P, c* |: e4 {5 |# W& K- A
;;
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。# C3 C# C& m# B2 C$ m7 k( V/ Z8 R1 a
let l 08 a9 \8 [$ B" e2 x- Y" K
while[ l < people ]: L2 o9 d: ^2 x% H
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价- s' V" r( {# I- W- m' Q# }( U- o
[" O) q. T2 C! C& b( S
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; V" \! _8 \1 A5 ]0 ~' m* eif (trade-record-one-j-l-len > 3)
% C; e0 X3 p0 Z. c( G# G: B* 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
: g  Q& T# K# @0 y: N) k3 S/ E: Tlet i 3
/ Z0 V' e( c$ O  Q) q+ W' Klet sum-time 01 S  F5 H" L! a2 {9 c* u0 u( j
while[i < trade-record-one-len]
( G& d( p( w" {! `' u[
; ?) R) K3 S  h; g2 qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 ~' A0 X2 z: _- Qset i
8 w; E7 S  p/ W" t2 i( i + 1)
/ Q9 H& G* J6 F/ U% L. i3 p/ t
]
7 O( w5 X( `* ]; d# I+ ]let credibility-i-j-l 0
8 R! o+ c: ^2 |2 n7 h8 C;;i
评价(jjl的评价)
0 m$ V! i6 M7 M& v8 Olet j 3+ [7 c) @0 |0 @4 L0 r
let k 4; H; Z3 ?. m. g  p# O/ |' V
while[j < trade-record-one-len]4 h- @# U  n; d4 ^$ P
[
3 q7 C4 G) A) Bwhile [((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; L" M9 B, j9 ^
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)0 I& Y# e5 c$ A& y7 g! b" Q4 O
set j  ]5 V  e+ |. M+ p5 [/ ~- m
( j + 1)

  @/ b% _: Y; m; B8 d$ ~# g- K9 A8 R8 b]  z( N2 s' e$ b* ?& `; I% ~
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 L! G& }) h: N9 b
5 K( \6 T( B4 I4 j1 T: U5 r& T
$ |& Z1 T7 q4 N2 I: X, ^' I
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* \  t% H0 a& z8 F' Z; l9 S, \5 e
;;
及时更新il的评价质量的评价, v7 q5 h4 @/ M0 V  F. i
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 X- T! t! j0 b5 i5 _  Uset l (l + 1)  j+ A- j" d# R0 e
]
  [# E# f: l, Zend
: z$ o- W1 F, Q2 m+ K, [4 M1 a  [& J* O: ^" {; e: V$ @
to update-credibility-list
- U7 W5 ]0 ]! E- C7 M% h( ~, d3 Qlet i 03 u4 i2 R# C7 e/ r5 L: r% h
while[i < people]
- r# T% q# p6 z* G: m# q[& O5 M6 `6 r* W% M( n
let j 0$ R2 i. t8 x) ^, ?
let note 0
* M: U; M2 k8 [) y7 e# q* Slet k 01 W+ y2 A# q7 e8 k+ q2 p
;;
计作出过评价的邻居节点的数目+ F" d% x# c3 _# d/ X. c
while[j < people]$ ?7 w9 P' p4 Y
[
9 q9 m0 c: U0 X0 Q3 Eif (item j( [credibility] of turtle (i + 1)) != -1)
; E8 |4 G7 b( T9 A$ F5 z, L% Y+ k;;
判断是否给本turtle的评价质量做出过评价的节点: e4 T' s8 V. X% F7 |$ }4 O; p3 P$ V
[set note (note + item j ([credibility]of turtle (i + 1)))
* m% |# k+ X: a; W;;*(exp (-(people - 2)))/(people - 2))]
0 j; t2 c( N: ]9 u$ ^! S
set k (k + 1)& n8 Q; f  Z" ^$ n4 X1 Z( s
]
% }% I+ Q* a3 r; Z" o5 g* a# Wset j (j + 1)
, B2 D5 i1 Q0 T]
# t3 R9 o1 J. ]0 v, ~, U: a2 Yset note (note *(exp (- (1 / k)))/ k)7 w4 j0 p% v) ?. A/ y5 N
set credibility-list (replace-item i credibility-list note)
3 s9 _9 |) \8 `2 q1 c' @set i (i + 1)# w* I8 s/ i+ s. \+ Z
]
+ n8 V  }- K. s: Y9 h5 h4 j- c2 S/ r' `end* M+ `8 J" c# |8 @3 {+ v. g
" W1 B* t* e. M& [3 w9 f
to update-global-reputation-list
1 ^0 X  ^  I9 x& g! Q: n/ `let j 0, K; |2 {# w  w$ @# `* c8 l2 U
while[j < people]
3 {' W' C, p# ^: z[
8 v0 j, e3 P! K" |) Wlet new 0  B% n$ s- ?+ Y2 i* x
;;
暂存新的一个全局声誉
! ]9 l& V# S& t9 E! O& S+ flet i 0
; b) @4 K! B6 a4 W: Blet sum-money 0" Y2 W' G" W& P+ u: D
let credibility-money 0
( Z+ @* K; x, F6 z8 u$ ~while [i < people]
: u/ X! h4 X6 {- U' D' o, r[# a! d# @: ?3 I2 N
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ V6 B! _9 O7 Z' k4 H
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 G" Z* C/ T0 X( W% t& J
set i (i + 1)$ q$ h" C( U9 P$ c' j7 T( z. g
]3 j* D9 E/ Z2 c8 S! W
let k 04 J7 {% E/ \+ B% E7 U
let new1 0, F* ?" ^& I$ a2 q0 d8 C& a
while [k < people]
7 N: H+ B& U0 g, E& r[2 a. O5 U1 Z2 z6 A
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)2 N6 E" }/ K0 L9 `
set k (k + 1)0 z& I1 A6 ?+ I5 J1 }, W5 k1 `6 H) B  q
]
: Y6 l0 o$ r0 g4 h& p( `, o% t+ oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; p; o8 e- d# l% J! V8 d
set global-reputation-list (replace-item j global-reputation-list new)
5 y  Z% c7 L2 ?8 Y) M( Q: eset j (j + 1). g4 r: z% U- A4 c' {5 j
]9 |; k# g+ G$ F! O# {4 _8 I
end1 ]6 ?  k' H0 R' E. o1 Q8 ~% Q% b

+ T( e2 R2 L- I" ~! V- \5 ~
+ n' D& N* k! U. x  B
$ F2 h1 E1 k! v, Kto get-color% Y4 t. ~+ w( A

  O) f+ F; V. ~+ n* E& r' t$ ~- Tset color blue
8 R& ]& U, W7 d$ m
end
) w" S& \0 b# N( F/ K6 x
, `- j  b4 a8 }) \$ kto poll-class7 |1 j$ b3 M" G& [5 ^. Z& e
end9 ^  K6 _) n  g" F! ~% ^
" c5 ~1 I+ G3 G8 l
to setup-plot10 W. @1 q( W8 }. f; `
2 G. B8 B3 B6 {+ k! t$ q
set-current-plot "Trends-of-Local-reputation"

  @  r+ e( _9 _
$ O& ~% O* x6 `9 D6 G$ a% Cset-plot-x-range 0 xmax
+ k6 N/ V7 p* v& C' t2 Q8 N( C) H% [; y
4 u! ]; Z9 }1 b7 T8 L/ A. Y
set-plot-y-range 0.0 ymax

: V3 u+ X: R. aend5 a% b3 H9 p% g. a

  H7 ?3 V0 @$ C" y6 pto setup-plot2- a( k9 O7 c$ B

& d( a( s9 T- ]/ O0 d! Bset-current-plot "Trends-of-global-reputation"
& d2 s  e0 \+ y5 T! G

0 i# |' p) Y: `) W% w4 I9 Zset-plot-x-range 0 xmax
" K& Q8 d* v7 e8 j+ E8 K2 Z! Q

! O/ i9 o, h- M  K; e$ V+ B; Cset-plot-y-range 0.0 ymax

' ^% \% V  ]* q' Kend
9 K+ x0 }' ^# v0 Z6 N0 C
! e  \9 Z6 Z# ]" O8 Z9 Z  h1 [& Pto setup-plot3# T  V$ K* |- A; k2 h; w
. y0 p& @; `& F, u# f0 K1 n+ d
set-current-plot "Trends-of-credibility"
  ?$ t+ ~( ?, p2 v0 i8 i

0 u; |" i0 E2 I' f6 L; U1 sset-plot-x-range 0 xmax
( {4 T. _, \5 a0 p# v/ J# ~5 x
! P6 M9 u+ o/ y$ a7 j2 T
set-plot-y-range 0.0 ymax

; ^* R; K* \% D, L* {end* O* w& o6 U( e% Z: d
3 v0 u, z& ]  {/ _% ]
to do-plots
+ n# O7 }2 d1 f5 h/ fset-current-plot "Trends-of-Local-reputation"9 t+ d4 E5 Y6 J' @# H" W
set-current-plot-pen "Honest service", u: Z5 z9 Q) _4 ]/ l. X  p
end
" H3 b* c# f8 k5 x: @5 A% g. N9 }" y1 g" l) U  A8 h7 C
[ 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.
% K3 Y/ v$ }; a7 S1 l
. j4 g3 j. I/ U这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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