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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:
7 N1 H3 r- v; m6 Kto do-business
- R; d4 b* j+ K( Z0 ` rt random 3609 r. S; ~; N- ?: A) F; C+ {9 E: s9 Z
fd 11 V* ^0 z8 m2 L: y- g: {
ifelse(other turtles-here != nobody)[/ J# ]2 o/ a: p" H% W  _
   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.
- p% D) D7 p7 M, v   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! h( ?7 `1 X1 m: w$ x6 u8 }
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- @- P: R$ Y6 `0 a2 ^# E7 n   set [trade-record-one-len] of self length [trade-record-one] of self6 x1 U" Y0 H; T+ n6 d1 Q
   set trade-record-current( list (timer) (random money-upper-limit))" l3 H9 g- f. v$ I9 A! V

* Q* \* m0 y5 R# G( w$ f问题的提示如下:
& Q  f( `7 G) o( I/ a. ~5 x: G1 P9 J0 d# y
error while turtle 50 running OF in procedure DO-BUSINESS- @" R4 H4 N, L5 z" c
  called by procedure GO
% o5 o- B5 j) b+ A: w$ VOF expected input to be a turtle agentset or turtle but got NOBODY instead." |. s& C- j$ e% u8 A# V' N
(halted running of go)1 Y7 o8 U/ x2 J2 N

: ~) J* D% h9 \+ y$ @: Q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~~, b  \& U% U  Q  D0 F8 f5 |
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
1 }) u+ h& D; b0 `globals[
  H7 ~$ }' P$ L  rxmax
% N2 ~. Q* n$ |1 N: E2 Hymax$ L! B5 `0 A2 c& ?7 [/ r3 ~3 I
global-reputation-list# ^4 U7 R3 C$ `/ _* a$ v) s( U% I

; c* @- N: W, q7 Z;;
每一个turtle的全局声誉都存在此LIST
5 o" l5 e6 v' a' h4 Ucredibility-list, Q# p+ D# s/ I, ]
;;
每一个turtle的评价可信度' Q. f3 l" ?/ B- E; }0 x9 @
honest-service
% c* X0 j. `0 u5 G2 x: E, o: s; ^unhonest-service8 I0 ^7 f2 r! \5 T. R$ `& Q& ^
oscillation' T- e# \# j( e/ L9 l
rand-dynamic
9 s3 N1 _5 U3 @- Y5 u, D4 A/ m]
& m  L6 o6 {* {6 C( O# \( F. B" o9 S2 g8 s9 M: R$ q' c' x
turtles-own[
( \! A1 J" _% W0 ttrade-record-all/ t# P6 B; v4 z6 b/ `- U; q
;;a list of lists,
trade-record-one组成; F4 Z0 P& [: O7 b
trade-record-one5 p; M1 E/ z) T, H& x
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, _4 p: Z5 g' v5 W" O

1 h( F. g3 v+ L6 o$ b7 B! 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]]
2 j: A5 T" }  f/ A  {% Wtrade-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]
" F. u' C0 d5 n8 C5 ^. V* [, lcredibility-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
. x2 Y0 c, u* K$ }& l) K, h3 G  z7 Nneighbor-total
- v+ u$ L) H( b$ ~;;
记录该turtle的邻居节点的数目
1 R- `' m8 O; n) e8 T! a1 n$ Atrade-time
' y4 L" J0 X& o) U;;
当前发生交易的turtle的交易时间
0 \* i' a6 l+ ^( D0 E0 n, Happraise-give
! t( x4 A6 [( R, _3 ]- q;;
当前发生交易时给出的评价
! U8 |4 ]! U9 |appraise-receive9 O5 S, c; j( J5 w! {
;;
当前发生交易时收到的评价
" j; D4 q7 Y' w( H" G/ b6 Zappraise-time
  g3 T7 {5 \( P9 r;;
当前发生交易时的评价时间
9 ?8 t) t4 h1 Glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉5 c! q1 w  b1 O
trade-times-total
' H) Q/ Y" g2 Q2 Q;;
与当前turtle的交易总次数& s  }2 @1 I1 i4 J5 l! e3 ]
trade-money-total
: V7 R  O, x7 H$ q, _- f: @;;
与当前turtle的交易总金额! [5 u  |0 A2 B2 p& e2 Z
local-reputation
  I/ e. ?# k& g! m* [6 t! jglobal-reputation
: s& B+ B. O( F6 y2 t, Acredibility1 V% p+ a; |3 M0 k! \
;;
评价可信度,每次交易后都需要更新
& C# ~2 D) @4 ]' d8 Vcredibility-all: p, v) a7 |1 n, J0 s- G  L, n. ~
;;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 p9 D, s4 b4 P# ?

( r) f* I9 o& B7 @;;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
0 t" _$ O! b' n9 O: j- Ecredibility-one
3 R: K! I+ z$ t$ p9 u8 v;;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
% b- l5 K' b, z) \2 Q" g! U% Rglobal-proportion8 V" [9 C0 [9 s( l5 s. n5 w* P9 f" `
customer
# U  ~+ U( r2 o5 V9 qcustomer-no
1 y, R1 y3 X3 N/ k- {trust-ok
+ X, J1 B2 w, Htrade-record-one-len;;trade-record-one的长度
( Y3 {, p3 c) i]4 _% G) s& z  r+ n
  V( e7 X5 y3 d
;;setup procedure0 s: A7 j8 \# I. M/ ?9 E

! w! [- u+ Y7 F+ `to setup+ t! `) Y( V: _% Q; A
/ x. K$ [0 Q% l
ca
* S; f7 U% \$ c. V( H- D

2 b8 T* q* M: n2 g8 |# ~0 u( d: E+ hinitialize-settings

# ]5 M8 x8 M) z0 d
$ X4 ?5 t" p, i/ _* |" Zcrt people [setup-turtles]

: L- I* h, A: Q% C$ }! V1 y
) W) T& P5 a- k- b) F9 s# @( @reset-timer
/ [0 d! S5 `$ W% `- I

5 p3 A& o  \* x% A, spoll-class
4 I, v( m2 m- K

. P5 u3 o6 e1 g' g- b. _setup-plots
9 ?4 X" S8 X- ?$ Z% }

3 [2 B, `: k* Vdo-plots
% i9 `8 `2 m  J% _+ K
end
( v4 J) _. [# z, a$ C# j' n  w* H9 j9 C- _& j3 I: d! ~
to initialize-settings9 k9 o& k2 h4 a3 B) l: i
% S8 j* h2 _0 |* j- V6 L
set global-reputation-list []

( b  r4 S6 S# ~/ |! K1 q4 x
% j/ M) _/ f9 Z2 f0 u6 p! `& e, b1 Yset credibility-list n-values people [0.5]

! Q; x( j8 X& x& i2 Q  I( \9 Q9 g7 R
! J- H( E% O7 N/ }2 F0 Z' Lset honest-service 0
! w8 z$ w$ q2 I( b/ l: R/ ^

1 b" l3 i  R' A8 P9 fset unhonest-service 0
- Q7 L) q( v# y3 \
' v' |6 Y  \. n/ ~  e
set oscillation 0

3 [2 f! E$ ^! C4 L% x, V5 O- Z
9 `% H" k) s% _0 G$ Q8 I0 sset rand-dynamic 0

: s4 |+ l3 s% t# d1 r, @end$ b, q" ]# X( W5 Q& F
7 N( |7 {! x9 L1 |' n
to setup-turtles / O- _: K6 I) L* v3 W! p
set shape "person"* `% s/ i2 i: s5 u" q
setxy random-xcor random-ycor
; ~) K  _7 {& P$ a$ L7 M. j+ zset trade-record-one []4 }% A1 G6 x8 R/ x0 `0 C6 q- ?

* ^( t# O9 i0 q2 O+ Vset trade-record-all n-values people [(list (? + 1) 0 0)]
  s  ^" u2 ~  j7 ^/ R

- U6 ^1 l; W, l8 W* g; l5 O. ~set trade-record-current []
; V( v% U! E4 U8 H9 m4 G3 Y) L% m' Mset credibility-receive []- Q. K9 u7 B! B
set local-reputation 0.5' j( A0 d" `) C2 I7 p
set neighbor-total 0
* B2 ~0 |) S5 tset trade-times-total 0$ k! W* S. I* \) i1 c' A
set trade-money-total 0
2 Y' B+ K0 C+ A( W4 Qset customer nobody. `2 v; y, @4 X- L
set credibility-all n-values people [creat-credibility]
7 R5 p% R+ T4 ^; h9 N4 o+ ~set credibility n-values people [-1]4 z; c$ t; i; B; s& \. Z9 |& B
get-color0 i) ?3 h5 C; `3 Q' ?

) j6 n5 N9 r# I1 r6 pend
0 Q; m1 l# A# C  ?6 A
1 V; t0 P5 @* w, Tto-report creat-credibility
2 ~' ?) H0 d% D) a/ k# yreport n-values people [0.5]
$ D; q& ~/ j* c' d5 N# Nend5 N" z" d2 O- Q$ S' ^' W7 R  e

9 r# [7 r; l- ~/ `3 J1 h3 Q& Tto setup-plots, V7 k# g, G- B

  A1 n7 G$ G  x6 ?3 cset xmax 30

/ _( A3 `* R/ K1 A6 u8 G/ C& M% X, c# q$ h
& H' P. z/ Y" |6 R* sset ymax 1.0

+ ^) D, R4 N: I' o4 `/ c$ M2 s" E7 O5 }
clear-all-plots
6 `1 }5 F$ g& ]* P/ u6 T" |

" H9 v9 A& Z; x% u$ Q  ]setup-plot1
' M7 I# G/ q  j1 I# d5 \' ~
5 V# [0 a5 `* [) q1 g+ N& ~
setup-plot2

* Y( _5 u' X6 `+ \) v" D
4 f# w: F2 ?5 j9 P- Dsetup-plot3
' C+ C, S: R' Z4 w
end
& n7 C' n# j; D& z% H; p: Z3 O3 v/ H/ _
;;run time procedures
; X- o! t* N3 }
2 O% s8 }/ n9 B' Kto go
3 I0 Y4 y0 D  }! G$ x% c
* s9 d5 b, O, N  A# T* zask turtles [do-business]

  H. C! A/ Z6 Z4 a- b# Y" }4 H4 mend5 p$ V/ ?7 C* j' W; m$ }& m2 s

: O- o1 c5 U' C2 [to do-business 7 _; Y; ?8 k( ^! w0 `4 [! x5 b2 D

& R- T' i  Q( L/ v/ G6 m8 i( @0 ^. o6 y1 `
rt random 360

' B$ Z" n1 a% r) ?9 ]( x1 _5 ~' Y5 s, M" v; r2 G
fd 1
  Z' V% `* G' ~! A4 f
. ?5 @6 c" L- W  j# _1 H+ ~8 n
ifelse(other turtles-here != nobody)[

- v* ^9 P: p" m; L( Q$ x3 r9 L$ o2 K4 o' d) w: W
set customer one-of other turtles-here
/ W5 B$ i# ^2 v8 m" p) q8 w
( e0 S* r# y" g" y3 g( ]
;; set [customer] of customer myself

. z4 ^# Z& V7 ^* G% ]+ e5 S( X: _. N6 [0 i# e3 p
set [trade-record-one] of self item (([who] of customer) - 1)
  q: |, c" m# Z+ g/ s3 x* P- P[trade-record-all]of self
4 G5 P& C2 O4 u;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, R& B4 j" ~' f5 @9 [' d  W$ M9 z2 ~/ g) O: _1 q+ q2 O! S) e" k
set [trade-record-one] of customer item (([who] of self) - 1)5 X. E# s: c3 _( |* B
[trade-record-all]of customer

5 z6 P, D3 a. {
2 {6 v. Y  }! n: K  ~* Yset [trade-record-one-len] of self length [trade-record-one] of self

' k, a) u" W/ L3 k9 K. g
! U/ \% @8 m5 k0 Eset trade-record-current( list (timer) (random money-upper-limit))

3 j$ e" K* r# Y* ?, v
& I' I$ o2 r# b6 zask self [do-trust]
" ~8 M: b5 z4 K6 o6 m4 ~1 A1 V7 {;;
先求ij的信任度# Y; Q1 z$ L! M% v# v, L

: _7 u* D2 Q: t. x% x) _' {- s* O; wif ([trust-ok] of self)9 n' V3 r$ {' `# o3 w
;;
根据ij的信任度来决定是否与j进行交易[
" e) A5 i# K: i  \9 c4 sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* O4 E. q# L. r. z( N4 q

* M4 W1 y' x% V0 t[

% k, V( T! E- m, `* M! T6 m! t6 ^( m% ?$ N# {7 Z+ _8 M3 _* U
do-trade

: Z+ b7 |# l7 \" ~' p% Q6 H: K
% u7 q" R9 B2 S) F/ Q! c) ?update-credibility-ijl

" y' r9 v2 q* ]8 ?$ n" n  Y; C
4 I! I. B& V3 F, u1 fupdate-credibility-list2 T  _" `& j+ P& E3 w( r) W

7 S( @% ~" {0 S" e6 U" h% D/ O% G, {1 e. W. \1 V
update-global-reputation-list
4 @9 M4 q6 H& P
) s8 F  p7 u) y, O
poll-class

' F# \4 O: K: B% v6 m
, ?2 O8 M9 U( U! H+ }get-color
/ A. v1 ]6 @$ {/ B8 ^! [
+ _/ T: c8 W; T- K# ~* Y- Z" t% N* E
]]1 t( b5 i4 a. l. ?6 ?4 W7 M% b

6 ~( n0 c3 w+ r0 e" C* S;;
如果所得的信任度满足条件,则进行交易
) p! R3 l4 V/ M- q
/ p2 b! b3 ]/ I& x, H& Y[

; v( H! ^! t/ M0 A+ o4 x" Y" n( \
rt random 360
) Y4 N) w9 V; e
4 k* c4 S- Q( s+ V! w
fd 1

* A& }( H0 ]# C! l- u  j6 s3 M  O4 `3 c
]
3 Q; N9 X! c* ^' P
% O: K5 a8 `0 e3 J4 c% Z9 k' c
end
- G2 j- u( E; Q
# p  s& f8 b8 H( a1 g3 h
to do-trust ' ]  x2 k/ g4 V" A9 v
set trust-ok False
/ P/ t, w; p, v
) {& F, s/ E8 j7 ?
3 M9 i; N4 c) u9 K. B
let max-trade-times 0
9 z  v5 d3 z" |4 X) {foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]' A+ A( r' }8 }0 l
let max-trade-money 05 h& k/ G6 v* b+ @& _2 |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( J$ m. b7 ?7 x$ p3 \" O
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ B5 ~( @% i5 R
" X; t) j2 S% B6 z) p& w
+ O" W* }! d1 y  E, V
get-global-proportion6 d, v5 b1 G  B2 {4 p) [+ j" @+ z+ G
let trust-value" E) E) k* |- K7 Z1 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)

& k+ p$ L$ M  d' \if(trust-value > trade-trust-value)2 D) }( i3 E7 D$ {4 y
[set trust-ok true]2 C9 \# ~& T  _  d; d: Q
end- `2 @( z% s9 a9 _

$ [, @2 K3 V  Y0 w9 ]3 hto get-global-proportion$ q( q# B# C8 i5 R" k. C
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), y* n( u: h* z8 U5 i' k  ?1 k) n" h
[set global-proportion 0]# ^- v" ~6 Q/ y  [! o
[let i 0& @' p1 d7 {) g; p9 E1 @
let sum-money 0
6 N9 j0 J. }! K; Q* y" K7 N7 Ewhile[ i < people]5 Y8 S& Q- @3 c$ o9 v, c, a+ X
[. F9 N/ r8 G: d
if( length (item i# J% q4 Y+ n; r
[trade-record-all] of customer) > 3 )

. |0 X; o: F( K' `5 `& g[! r) Z0 t% g# s. N: j0 `" i# C
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ f' ]# A2 V0 Z]
0 M* i5 Q$ v7 b4 }, x8 e]0 C, R& j( Z- U! F0 V! f, V& w
let j 0
/ i7 w" H& J& @7 X  n9 Olet note 0; @" k' I: R4 e
while[ j < people]
0 b, P7 N- V& s; }; E: j0 S[1 k9 {, v6 h+ h' r' R
if( length (item i
9 g* M4 O" ~0 ^- F) h[trade-record-all] of customer) > 3 )

2 f/ w% l) _" ~& }+ l" c[
9 A2 x/ Q  C% B6 z9 ~$ x# Z6 difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' z$ ]' x* C" C" b1 r- r3 d: O- D
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! o8 i) ]  H" h2 Q6 K0 T[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 g4 g6 q2 l+ g- S
]
* Q# U& V: h$ l) X! T/ t]
  Z+ i6 {. L& nset global-proportion note1 s6 t$ I4 {% p; O/ s
]3 X' _0 M8 C1 }; f! C8 z1 I
end
6 e% M2 v8 H0 Z: I0 W( w9 [0 C1 W2 M5 X: ]! Z3 @* _
to do-trade
; `$ h: ~/ X$ Q2 G7 Q;;
这个过程实际上是给双方作出评价的过程, {- a8 E$ H. m# E% k1 _
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& X( S  y, L. G4 c& q% s: z: Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ ^8 l: s/ W  T) S' S$ C
set trade-record-current lput(timer) trade-record-current- t- z# }! K' |2 B: H
;;
评价时间
* y. Q( k# k( M3 b0 _ask myself [) Z+ ~% M" b  e4 C
update-local-reputation
3 ]8 o8 Q; L( e! d5 y" rset trade-record-current lput([local-reputation] of myself) trade-record-current; P+ K* ^' S& u! \8 P
]
. Q( P" N0 i3 L# s, ?$ Pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) n9 g- Y7 o3 _* i0 o4 O
;;
将此次交易的记录加入到trade-record-one8 D/ S7 ~& ?4 r: j
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 V9 ?) ?8 }  U3 r; }
let note (item 2 trade-record-current )
! g7 t: x! ]5 ]: o4 nset trade-record-current
- e$ c/ k5 [3 A. h! d(replace-item 2 trade-record-current (item 3 trade-record-current))

7 \# o3 D5 u! |+ ^7 b% ~set trade-record-current" y$ L! Q! H; w
(replace-item 3 trade-record-current note)
+ r% ^( o! w2 ^" t! \7 ~; ?
! a( e9 M- S! {$ Y* p

4 Q6 c0 Q/ f$ t1 M4 w9 e# }ask customer [# ~- J: b: d1 _/ M
update-local-reputation
, m$ T4 V. K! X! p/ rset trade-record-current/ G' }. o% [; X1 \5 U9 r# Y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% }, E0 e: c' V]
  |' _" d/ w! z4 [  \% Y% @1 H0 Z6 j0 w4 ^' V/ Q
' Z1 G" Q# _9 f& {% i
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 o3 k3 T* {" r+ g

) x; n: U8 O1 L# B# \  Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; L8 G* Y  x. B& [& i2 S;;
将此次交易的记录加入到customertrade-record-all9 L1 S5 v! l$ _" n, }8 c/ g
end
. H' L2 a9 l% t0 @( R8 B; G- {6 R8 ~( v% I9 V, w; b! M! w# P
to update-local-reputation
$ a( t+ E! l* b2 d2 Eset [trade-record-one-len] of myself length [trade-record-one] of myself: H. q1 Z) Z' m' A
$ ?5 q% c. u& z& I% d' d2 N
0 d' N# d0 n6 _, N
;;if [trade-record-one-len] of myself > 3

! l+ T) Y* _" Wupdate-neighbor-total
! r( W. _+ j0 n;;
更新邻居节点的数目,在此进行
' i( f/ U5 i/ t! Dlet i 3
: n# d6 d+ |5 v, M* f+ Jlet sum-time 0
. J' i5 ~& H+ B) m5 v5 \while[i < [trade-record-one-len] of myself]$ i' i8 X3 H6 K8 x6 P! k
[
1 \  b8 v, M0 S% v4 t* {set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' y2 i- X0 O& W5 \2 x  q" h
set i
* `2 Y, f5 o& `$ n& K; O: e1 W( i + 1)
5 Y! I0 `7 r5 Y$ c: |" z
]! ?5 A( r# {# T% {& z
let j 30 x( N6 }0 g: ?: {8 v/ Z% p8 A
let sum-money 07 P# u5 x2 z  e7 m# a
while[j < [trade-record-one-len] of myself]
+ ~) h" z! f; D% f8 T! Y" ?. L5 G[, P2 h$ a. f, m- M  D1 H  L/ U
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)
) c) L! R0 o0 ]7 o, b  Dset j
; y8 `9 j3 Q" ^4 V  e+ ~( j + 1)
) Y+ Z1 t) c) u/ Z3 m
]6 X7 p+ C; z* s+ g1 K8 Q' p" {
let k 32 ~8 z+ J2 w- }# M
let power 0
7 d* x2 s6 t  j0 Q. |& P/ `let local 02 x& k. e; A; O* i# H4 l/ ~( I
while [k <[trade-record-one-len] of myself]
. H4 j) X3 y+ D$ r9 |9 O[
/ F- R/ X! u3 G& r6 X  Aset 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) " b4 Y! n. K) `7 U5 t) n8 U
set k (k + 1)
7 w' \6 W" l& o4 p0 ~]
; p/ M/ _' T3 hset [local-reputation] of myself (local)
6 g, I7 `  a% X1 g! v, Mend
) ]  e7 N0 b- n9 I) t+ a8 O% S9 T
to update-neighbor-total2 i7 |& n% G* A& ?7 f

+ F  t( i3 C5 n+ s% b, gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. J8 ~" o) P. {( Z8 A3 P8 c2 t8 @3 [
( ?+ Y; t$ C+ l7 F& o
end( H& }: u& p' ~* A. a& N# S

4 E1 _1 M" U) \1 _" S4 ?7 mto update-credibility-ijl
3 S/ s/ g9 V9 i+ C+ C( W% _* n2 K' W. P( Z2 T9 E7 H& S1 }
;;
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。
% F5 {6 F% I/ V  C7 d/ |let l 0
# i4 x# O% @( |, Y# f1 ?8 Hwhile[ l < people ]8 s7 Z5 I! Y% \2 T% P
;;
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
5 D6 ]* E! V( c4 n) C5 ][
4 ?: j0 s  L6 S. z8 ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 r- m+ [0 G0 P+ L8 W& E+ Uif (trade-record-one-j-l-len > 3)( A8 H" h, `- }  D
[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+ B1 h# e% {% d, C. l4 |, K
let i 3$ I& O# L1 c* _, U8 I$ c( N/ N
let sum-time 0
7 P& G+ U: h! n* Q/ I  x7 Rwhile[i < trade-record-one-len]
* }: C1 x3 V9 f8 e[' A5 _! n9 L) L) q% @; s2 C* Z- A
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) v6 x. z9 Z" n  Q  b3 fset i$ X9 P3 r% k( \/ R
( i + 1)

4 t4 p6 V0 V2 t+ b6 u]! C' Q- d4 ~/ [; C
let credibility-i-j-l 0$ z: r& O, }; S; u
;;i
评价(jjl的评价). J& z4 Y5 {" i' ]- I: n
let j 3
1 W5 @% C/ g' [7 vlet k 4* D& t: h: X7 a5 }/ x1 e2 L
while[j < trade-record-one-len]. ?. x% {8 R6 }" \: j5 q) K& e3 I
[
$ h% ^0 z4 `9 b4 r; y4 J" z5 wwhile [((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5 T. G9 [( J( M0 O5 F* Q+ r
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)' S; U" ^, F7 A
set j
3 g3 X0 M5 W, U, S9 X, @1 Y( q( j + 1)

0 V( M# Y5 v& Z1 s3 u]; J$ j* J( E$ T- d* w
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 ))6 e6 X% Q: G3 A) J9 M) L( S

! l$ b6 _+ D, O% i/ F$ G
6 w. J0 u1 G9 q& |$ K' B2 D) ^
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
1 C+ _) E, w; ~* Z9 e7 g  s;;
及时更新il的评价质量的评价
* f. ~' b& q9 e% {+ fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 o9 E* D1 s' W9 D  W
set l (l + 1)
0 q3 [8 W. f+ C% K- y7 X]2 R- J6 L# C/ h
end
4 L6 i  V/ ?7 n  R6 e6 _1 D. B) V/ u" s" u0 C, Z0 y7 J( v) O" ~6 v
to update-credibility-list
+ [9 G0 b; @6 l7 I: N: Ylet i 0/ k+ k" q; |* F2 }
while[i < people]: j. y' j8 d+ D9 T
[& h( G6 E2 h$ K7 Y$ R! _
let j 0
; ~. t1 X) q9 c: W$ R: Flet note 0
4 ?( M' U5 ~) X' h4 wlet k 0
8 ^" a9 b0 J9 Q;;
计作出过评价的邻居节点的数目
: a" M/ r) I+ o; ~while[j < people], P9 R: C! o$ X
[
) o  g& o! Z2 j9 K1 F9 X7 i% ^if (item j( [credibility] of turtle (i + 1)) != -1)) Y$ p, {8 c. N
;;
判断是否给本turtle的评价质量做出过评价的节点! \% V: N6 m* \
[set note (note + item j ([credibility]of turtle (i + 1)))
8 x  J+ C" ]! o5 b;;*(exp (-(people - 2)))/(people - 2))]

; ~* @2 G& Y1 ~3 W  u; b% Kset k (k + 1)7 ?, n* F9 C0 J% T
]
/ X- y, I& O% v  e9 L! t- O& W: Dset j (j + 1)
2 e3 ?" S+ b  V1 D- g% ?: K3 [0 v]
2 q5 c. o# L( vset note (note *(exp (- (1 / k)))/ k)
: i0 |! J# H2 @4 ]9 ~" s$ z4 {set credibility-list (replace-item i credibility-list note)
9 o# J" l! A7 j9 q3 P' `6 N  Xset i (i + 1)
( x$ W9 r+ D; w! m6 J% P, `]
4 p$ F1 e& w  E" Cend
9 D& v$ d8 j2 B& L7 H; e8 o, H; G( _: k+ z
to update-global-reputation-list
: M. i7 V" ?& x" C7 I/ `let j 0
( f/ L1 b# z7 g' uwhile[j < people]7 k! m8 k9 c- g6 H; K
[' H3 B# X5 k& R$ [" d, u
let new 0
5 L* }: @- `) p7 C/ @8 u; X1 |: y;;
暂存新的一个全局声誉
. W, E' M4 d, U( ]let i 0
5 Q5 m5 w0 z6 Slet sum-money 01 W) R0 E% O: c$ J# t/ i& A
let credibility-money 0
/ k& Q6 r! D4 rwhile [i < people]
0 q" O  ]# n3 D6 D- u# O/ ^$ m[
/ z! M' N) m9 a" L3 I1 `4 D. R* j. a, Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* N6 |3 C! k" s& Xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 x3 d" U' Z0 O/ O& r$ pset i (i + 1)
( ^$ L6 T+ t- u]0 _+ S( W5 |8 F$ g0 z" s; ~% w
let k 0
0 \+ {5 {" K. p2 K+ Dlet new1 0
' i/ @# r/ w% L' O' A* kwhile [k < people]
/ W; E! I  E* _1 I  S( e[. c8 l9 J$ ?/ G$ k, s4 O; z
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 A* y6 C/ S0 h5 g  J1 b
set k (k + 1)
  }0 n9 w6 u& f: u* E]
) F; M- l4 q- cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: D8 m* E- D9 R# ?; |5 A' E3 bset global-reputation-list (replace-item j global-reputation-list new)
4 m2 \. n! F! V; F( Zset j (j + 1)' ?& r8 b" ~' }. d/ B3 t
]% A$ p% h) E- ?  s+ Y8 a
end
/ s" \& l4 }+ {; q0 r
. ^0 ^7 U6 p  `# M" }! I. t3 s% _% v/ Z) |, y

* x5 B* A) g0 ]8 O1 ?# G( Ato get-color
  x8 R8 a0 [9 q
/ @( ?  e& f$ X  H1 s( c$ pset color blue
) }2 _  \3 o# U- o# d4 H
end
, U6 u7 B' R' o8 q# {, S+ j# K5 y  T- ^8 E: [* ^9 L
to poll-class
& M( y8 t2 b# T% W; send
) D$ |% m  |7 S
* T. X8 a# L, w- `- u+ \to setup-plot1
8 @! L: K3 g4 m. U, I4 U7 {1 W2 J, D6 D( ^# q5 |2 u/ f/ p* q2 c- ~
set-current-plot "Trends-of-Local-reputation"
' Y' g! z6 g6 \9 k5 x
8 [( {% w) @; n7 z9 J
set-plot-x-range 0 xmax
; Y; X: S! k, s4 u" a2 Q. T
  }0 v' g; N- Z0 \
set-plot-y-range 0.0 ymax
1 T  i8 w1 H+ {0 P7 [/ k& _
end" _$ J' w4 @" K/ N' O
& b/ _5 L) C2 i" y+ Y  A) ]8 \) H4 @
to setup-plot24 `, x  A4 M: |8 ^3 G0 y" _

; C; }/ x" [1 g  kset-current-plot "Trends-of-global-reputation"
4 [9 s  R( }- ?- D6 x9 C6 U' d

: @$ ~! Q8 \, t5 g# lset-plot-x-range 0 xmax
& {/ X* X' o+ k2 x, _
& P4 y/ [2 D# p3 s! H( c$ Q! _
set-plot-y-range 0.0 ymax
8 v. L5 A5 y- m$ z3 v; V2 N
end3 f. ]' L# ]* W  O6 c, v2 m
! S; ^4 b2 U  V! j3 P
to setup-plot32 D$ E% ]' T; p# m0 i

; F9 g) W( q) t) D3 ^' j  Tset-current-plot "Trends-of-credibility"
7 ^3 o& q. h1 c& t( Z/ U
/ [* g5 X* l. U2 K1 ^
set-plot-x-range 0 xmax

. o4 u' c0 m: p5 D+ M: U) n9 F* q$ Q: F
set-plot-y-range 0.0 ymax
  {* k- J$ B' t% D0 ^- L7 `. P
end
8 H; H" k/ r4 H" b8 M% E' @) i& f2 I6 N
to do-plots/ u) c4 ]: c- i
set-current-plot "Trends-of-Local-reputation"
6 x! d' d) f. X& sset-current-plot-pen "Honest service"
& Q: V  O7 _2 @. Q# Eend
* V8 U" q, U# v
8 v  T2 y/ J) y- g( z[ 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.
$ f! c( x6 ~  M& x* x& B4 Y1 h- F+ J
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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