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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:! [! f& Q/ q( H* H' z7 ]
to do-business ; h( A# A. k$ ]1 H$ O( A
rt random 360
- A9 a7 @6 n2 [ fd 13 n2 m4 z1 _* s7 c5 }* b  V
ifelse(other turtles-here != nobody)[) C$ b: L$ l# X. e& G! o- I  @
   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.
2 I. S, o! @! r" B1 e; X  f   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; g6 w" J; L+ }7 {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. S$ b  G- @' }; x8 {: B2 j0 K9 Z
   set [trade-record-one-len] of self length [trade-record-one] of self3 Z  J7 d; A+ m/ u7 g  w4 A
   set trade-record-current( list (timer) (random money-upper-limit))0 L, g! |) N1 I0 C% w7 d4 |
! m# I% B" A6 H  E$ b0 I) A
问题的提示如下:( b7 a# C, |- B0 ~2 F
" H! Q1 n! `% h; P
error while turtle 50 running OF in procedure DO-BUSINESS
$ \' g+ y. a! ]9 _& T4 a- V7 ~  called by procedure GO
5 S; X6 b2 W( p9 D8 z0 E$ `  L! bOF expected input to be a turtle agentset or turtle but got NOBODY instead.
" p( [8 E5 t: U' V6 J: c0 A
(halted running of go)
- m. |  }' b# t* i! x7 c
5 b2 N+ ?. d  A  m8 T; R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~~
; G5 \5 u! l+ p" S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
7 y# a5 I3 j8 r' F. Z! {! vglobals[
7 z: D' q! d+ g0 \8 B) G" {. hxmax
, R) n( h' h# N2 X7 \+ d# q7 lymax, @- q. v: `4 Q' s& E' m' g* R0 @! M
global-reputation-list2 H7 c7 _. E; L7 O0 z2 R
4 d4 U8 q% w, D5 w
;;
每一个turtle的全局声誉都存在此LIST
% ~+ g6 t+ I9 l9 y) }3 [credibility-list
  U- _) [; q0 \2 f# a6 L;;
每一个turtle的评价可信度* l! o6 v( j/ G0 Z+ T
honest-service
# ]& s2 `- j! yunhonest-service/ H! p3 T$ @- {$ z; W+ n9 }
oscillation
8 b; t$ L1 N, |& F1 grand-dynamic
$ N0 y9 b3 t7 g6 ]]. P) I6 C9 a7 ]

+ C8 I+ X$ ]( b+ A8 Rturtles-own[+ I3 `$ s  \. x0 g4 `4 Y4 [. b: c
trade-record-all( O% t/ B6 H  X' d" q* E) n
;;a list of lists,
trade-record-one组成
5 {0 N" T5 T3 G+ g. Ftrade-record-one7 e6 }  i% a4 ~* V) R. 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" `% t9 w/ z4 d$ x9 t3 ]* u
, |  K! D' f$ Y2 p/ S0 R
;;[
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 s2 z; I  L! d* s  x$ U- j3 k- ?# ~: R; L
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]1 }6 l# e, c1 J
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
6 S3 G4 P0 v5 D* t$ K" p6 tneighbor-total
2 g4 U$ E+ z: |$ N, J- n) D;;
记录该turtle的邻居节点的数目
* Y) X( X2 H/ q. E3 rtrade-time
8 S/ {; A1 {4 R0 M2 j  `+ g9 R  O;;
当前发生交易的turtle的交易时间
  X8 H5 a1 H( T$ @% Q  h) eappraise-give0 S# e* K( G! w. `: G' j! r
;;
当前发生交易时给出的评价* y0 Z- ?: q5 Q1 Y4 P/ A$ u& v
appraise-receive) x* F( G; y$ E( V. |
;;
当前发生交易时收到的评价) }6 o5 s6 Y' C) f6 s, S
appraise-time
/ S) \  |. S2 H7 V( I3 G;;
当前发生交易时的评价时间
5 h, X- e6 f( L& d( olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉1 o* O- ?. d, ^  J
trade-times-total
3 p) e+ S' y0 I2 i;;
与当前turtle的交易总次数
6 m* x% c% u8 q( M2 G+ Vtrade-money-total
/ g  q# G. g8 m. H( K0 f: A2 A;;
与当前turtle的交易总金额2 O8 G* P  r4 ]5 M
local-reputation
% T  ?3 a; e6 o, t. jglobal-reputation
1 E2 e& a0 s' ]9 Qcredibility1 e1 r& C" B- ?3 a
;;
评价可信度,每次交易后都需要更新
' \/ e& m- v* ~+ b+ w& M" Qcredibility-all
0 L0 K4 G: R& [) w' n3 S6 K;;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
1 E' n7 z2 M4 }6 U# b/ i; U% U* S: C' B% }2 u7 l5 T
;;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0.56 s, `) j9 C, M- r# D! {, s
credibility-one7 a% h. F5 p. V/ B, L) B6 g3 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. y& T6 E" Q& x' `( r( k2 }9 O
global-proportion
0 |, U- T: C: F$ {* z8 ?4 o: P& p- Pcustomer1 n  {; a: Q$ h# k' ^* @; F3 U; @
customer-no! S" J+ @  R% f& V
trust-ok
8 x( a$ K( v, s9 J2 @" Ctrade-record-one-len;;trade-record-one的长度
" q2 {0 V* h5 W/ G& c]
& W6 l3 n( T% J4 c& X3 t5 E! C% X: M4 |9 ?( v# z
;;setup procedure. {4 w6 ^" w* r* _: @

4 n. b5 d/ X% X/ D) P9 dto setup
  O6 C- b, y, y  @4 _
8 V0 n. m; s: j; @+ \ca

/ u8 ]- `+ q# r( |2 e6 Y/ @
0 p  n. t3 B+ a) f; S8 Xinitialize-settings
  L# {+ D5 d2 x6 K

% I; r" Y( ^7 @5 f; ncrt people [setup-turtles]
# f, y6 v) C9 h3 h/ W- _$ O

7 h2 K3 [1 h) K0 T/ F! _# Preset-timer
4 t7 f3 s$ d; @$ Z9 e

/ ?# }% U  f7 n; A% C0 H, Dpoll-class

1 e8 |0 U: X0 l+ ~2 `! X
0 h5 I& t, l2 x! f8 P) fsetup-plots

1 \/ h( f( q; E0 ~# Q' T2 V
$ {+ G; j! P$ z6 f3 O( ddo-plots

5 ]. E) c, m$ @) l, x6 Rend8 T% V: C' a: s9 S# e/ z9 l
, T- p4 ~# i* S( M) `* H4 b5 L+ d
to initialize-settings( G9 N$ f0 P! N7 o
! n8 c, ~; L0 Q; h. n7 x
set global-reputation-list []

5 a9 @! C5 V$ H" K! ?; V
9 Z+ T5 ~6 @* X8 S" eset credibility-list n-values people [0.5]
0 T8 U: J/ }& I/ @

8 t6 G* _/ v( Y$ Pset honest-service 0
+ V$ [% E! O6 [) |- i3 Y
- }+ d' ^; ~# d' w1 e& Y
set unhonest-service 0

' _" O* d( j% F. v( t
( ^% X3 @5 m. v/ N) kset oscillation 0
" D; J3 ?- z1 D& s* Z+ R

5 N& w% `( a) pset rand-dynamic 0

0 R& |- u. y: C& d  M4 Lend& r! \# M; l, G; [5 Q

5 `8 r# X) O! |4 r2 Q. sto setup-turtles
; o1 s& B* k# s: Y. K. Wset shape "person"
" Z0 e: ~3 @: _& ]! x7 Nsetxy random-xcor random-ycor
$ k* U+ Q5 z. C  P* n: ]8 I, Aset trade-record-one []9 K2 @. O" B% b% K  J, D5 w

: J* z. m9 i7 W6 S+ Z, S0 H7 rset trade-record-all n-values people [(list (? + 1) 0 0)] . R) E7 l$ E: K9 |
; q1 J' I( w9 n: K, G( u
set trade-record-current []# ~5 ]: {  R; D$ \- K
set credibility-receive []* z6 h) ~; p) j, g& ]
set local-reputation 0.5
) ]0 x$ c& I4 Vset neighbor-total 0: M% n( P1 N! L  B  d, W' [- Z* g1 o
set trade-times-total 0
' ?$ h% s) k7 X3 m) kset trade-money-total 0
2 _2 D2 a- F" q1 n; P# c( bset customer nobody  Q0 @7 M# U1 N2 \- E  o, _0 F0 s
set credibility-all n-values people [creat-credibility]
3 _4 U7 X" Z" w0 a& `3 ^8 ]set credibility n-values people [-1]
. W0 X2 }, t+ U5 p7 E7 m9 Eget-color
1 w* E% U2 B3 O3 m- M7 u' \6 E

8 @6 w4 M* a3 h$ E/ c9 Kend2 i& L1 h& S: G; I+ M- K/ l+ F+ n

& H$ @) K  c. N4 q. H0 T; qto-report creat-credibility7 r6 L1 h# e5 S3 @- R
report n-values people [0.5], Z7 T2 b8 e2 S9 a# |
end# E' Y1 f  y0 i7 E0 ]& I# O

2 [0 n3 S/ w. y) ]# r& A) @0 Mto setup-plots: i6 e+ v" D- s; l

7 ?$ q5 g8 I0 Y* F/ sset xmax 30
" w0 i6 x9 G- F- M' i7 A+ |
+ E) H/ l6 U' r! V( Z* D" Z0 l
set ymax 1.0
8 m) Z6 o) }+ ^1 d# V/ B

0 X/ M; r- f9 K7 Aclear-all-plots

' r# a( {9 l& I% j. y& |3 Q0 W
/ B6 u$ \8 F& ]2 V* N( [6 S6 hsetup-plot1

" u! V  r1 ~; m6 K( \# A0 b2 @  o. H# @. K, _+ ^
setup-plot2
8 h2 P3 |9 L& a  @
8 w' C: {+ Z; k6 S5 D
setup-plot3
( [! x  u/ ~: K1 A3 v3 T; S; @
end
4 u0 r5 @0 o6 B; p4 u
3 ?5 {4 ^: [" Y3 B3 t;;run time procedures
" D) S8 x4 N& k! y" ~2 j; b7 @/ Q$ |2 }4 H: w- a( }4 ^4 V
to go
. E0 J; {" [; V' |' u9 _2 H
% d  C4 j: \: L) h! lask turtles [do-business]
3 c7 q1 g/ S6 Z% G- G1 L1 T' i" `
end
4 n7 P' c0 c5 V( p# f
* I$ p% O; [& G; W0 r$ dto do-business : z* B+ x8 k" ^2 Z
1 i$ a, z2 ~6 Q$ @( \
1 Y* k& T0 y" {" ]2 z
rt random 360
6 c3 e) p; m7 \

- \# W/ E; v6 P, ^/ xfd 1

+ n( M3 s6 P, K+ f1 i. ~. |1 |, l! C0 G' ]
ifelse(other turtles-here != nobody)[

  k( u, t9 o! f7 `+ r
; x& M* a+ o* d) `set customer one-of other turtles-here
" @8 y5 f7 W/ r* Y3 j
0 u/ }, H/ n3 r& @' r; Q$ }
;; set [customer] of customer myself

7 \  F2 b, ^6 k! Q3 B, x
- w4 _7 `# c5 N, [3 m, P7 b9 }set [trade-record-one] of self item (([who] of customer) - 1)
( s4 Q! z; K- k[trade-record-all]of self
6 {4 [( a( p1 g" r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. i4 a2 h0 ]0 w* Y7 p9 @

5 W) ?( C" x6 w( m, S" Hset [trade-record-one] of customer item (([who] of self) - 1)
/ H6 s6 x! u# b$ |[trade-record-all]of customer

3 ^! u. j, p% A/ Q% V8 D, T7 ?: i
* w2 m) u* L) c8 C& a: ]set [trade-record-one-len] of self length [trade-record-one] of self

4 o1 O& Y! o; o) v* B9 g5 g2 S& J% x/ t
set trade-record-current( list (timer) (random money-upper-limit))
5 d1 g8 p0 V9 U2 G4 n: f
- g9 o! l+ P: e( ?2 v
ask self [do-trust]
6 h# K, O0 c( P! {' F! }$ J;;
先求ij的信任度
$ I: t5 @* L+ l7 C# _8 \( l; V- b8 ]" S0 Q& {/ p9 `2 v) L
if ([trust-ok] of self)
; q( X/ Y. b' F& Z. w;;
根据ij的信任度来决定是否与j进行交易[
+ M- t) E, ]) K; }5 [, g7 D3 nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% r9 o! \5 \! U. T9 f

1 ]% i& o! J3 k) f[
4 \9 P2 D. ~2 q% I

: Y9 ^& r2 D, U; Z" `$ U/ o) V$ Qdo-trade
5 i- x& ^8 a. ^; i
% H5 c: Y5 l7 M! ^/ Z& s
update-credibility-ijl
) c4 P* V0 K# d: [2 w! K5 }# V

' C; Z* k) @( K) \. H* K0 G6 yupdate-credibility-list
7 o9 l: [6 b1 G9 ?$ h- q) V/ V" q
5 c6 x7 v. Y  \+ f+ ^$ p, K/ g8 D

& c: Y+ z  J* y8 J2 X: b9 Mupdate-global-reputation-list
& i, S0 {% h* ?/ u+ }& a; O2 _
* ]  N3 U3 O% ^  J6 s) g
poll-class

$ d7 f& d% [- @, `8 H- w! p5 e+ t
; z$ E( q2 O5 C/ W  S) xget-color

7 F4 @$ e  L. w2 o  K) L% i4 N" v) n0 x
]]9 Y/ A  p7 d/ t7 m- d, g

8 G3 b/ Q# P+ l;;
如果所得的信任度满足条件,则进行交易
2 t) g% C9 U; B  p- T: h( U% j/ U8 G# p. k* p, {. v
[

. s+ B" O6 r5 N/ i* m2 c- |/ g% k6 d6 X9 a1 l! M% [
rt random 360
1 C0 o" p6 b2 q3 ]! S" M2 S, {

, }0 L6 i6 z/ n' f* Lfd 1
1 Z" ~+ n8 C- l0 v

# a* s1 Z. G; A% v6 D2 ]) e]
8 m8 p2 [% L' {$ p' v% x

  K. F% U) M4 @9 a- h; oend
) p$ B6 J+ S. Z
9 k, A  p8 w! y8 ?* M' D' y
to do-trust
) b! l* o  e& q; R/ L; Pset trust-ok False
/ D) K2 F7 }' f* s
# Q0 F9 I' h, x" m+ r
! K' T) R) }1 F
let max-trade-times 0
; O! d! e" ^( d( Gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- R0 f; t; ^. ]! x/ [
let max-trade-money 0
. }2 C2 j8 `5 N$ \1 ^foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* m5 V7 u+ h+ I  r- r
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 `6 s1 r/ g9 Q3 O- }* h5 z. n
, u% U' c/ N2 D9 k

% ^/ J, S1 [% e3 s5 }get-global-proportion
9 A/ e. S4 y; @9 llet trust-value7 X2 S% q% \- W7 J2 s! s
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)
8 S+ l1 R# m. E2 y- ~
if(trust-value > trade-trust-value), S. P/ y) u, O, N5 L- J
[set trust-ok true]; {" R6 N4 E- @1 T5 ]; \
end5 w( S" k* R2 G5 Y7 j5 i7 T2 J0 P
' V1 Y+ M1 D, S; `" ]4 M
to get-global-proportion6 e- e0 b" a. j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ e- H5 T, C8 u5 H4 A
[set global-proportion 0]
  u: ~% x$ C4 P8 ]: z5 c[let i 07 x7 P! B7 s$ B7 s- U; K, J
let sum-money 0
, M; h$ D; J; G) ^while[ i < people]
; B6 M* ?9 r4 p) [[
, ]/ I3 U& w* q7 U- G- [" A( c/ [if( length (item i
- {1 {/ G6 D8 @" u' m2 K, |6 C* T[trade-record-all] of customer) > 3 )
& Z! E/ R. A& o5 n$ T; l7 o
[9 I/ R9 F! P* _8 O* d3 ^
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. r' l* M# l# ^* q1 g1 |7 g2 `]! C' O7 n. n1 h9 k4 L3 Z! k
]9 @. _7 V! I3 f8 L3 y  [# O
let j 0
. Z, \# @* O3 Y- `let note 0' t/ d$ S) R% }8 A4 a
while[ j < people]
/ R/ I& N5 N( V( w0 C+ S9 c+ b[! H: X& f* G$ [0 D1 s& `% h( ^
if( length (item i8 w  @' B1 F/ @
[trade-record-all] of customer) > 3 )

' n' O( c& Q' b1 T' ]6 @[
! b6 d' w8 z. y# c+ A7 j" P1 g% Kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 D! S2 c8 p- [& H
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ a* A: s2 d' I. q$ q4 U) P[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. \  `5 l3 H. V) C3 _% X# c
]
: R1 c* w, E' I/ c$ U: L]) N0 C1 s3 D5 G9 V% u! A
set global-proportion note
9 o$ ^5 h5 w% Z& @2 z! Q. u]* Z8 U- j; W$ I. C& A: B
end
9 p. B+ K; |) B" q2 G9 F1 V7 [+ f" }8 g1 Z
to do-trade
/ g( I# [6 x- ^;;
这个过程实际上是给双方作出评价的过程
8 D" {5 N$ D+ |  U9 {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 [3 \9 i' o8 e5 P( D3 O4 iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
! O- p& K) A& K! n  i% eset trade-record-current lput(timer) trade-record-current- B! H$ X4 f' d' w; y# ?7 |
;;
评价时间" b+ `$ s* M- c3 L! @3 m
ask myself [
. i8 x( Q" `% A- |5 yupdate-local-reputation# {" _' l" b! }% A) a  j
set trade-record-current lput([local-reputation] of myself) trade-record-current" H1 }+ k; P9 {0 N" |6 W( v
]0 ?9 G2 a9 a/ B" @5 d
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 }; w: N2 d3 n9 I2 c+ h! ~0 F;;
将此次交易的记录加入到trade-record-one) P) `3 |3 x" T% n: `
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 e  Y, [1 F0 r7 t$ m
let note (item 2 trade-record-current )1 O1 o2 `( T0 w( Z7 n$ w/ \: L
set trade-record-current
$ J7 m) D7 @7 a" ~$ s! ?(replace-item 2 trade-record-current (item 3 trade-record-current))
" X4 ]/ E* l( P1 j) n  G- L
set trade-record-current  a8 L3 \9 t1 \6 Z: x  T* k7 P
(replace-item 3 trade-record-current note)1 O9 i+ X# w  I0 c
/ ]+ q- Q! L: o

% H- Y. P! r6 W* L4 M  E: Eask customer [
$ W( s, n9 Q) s! S* K; C5 ]. T4 Y' gupdate-local-reputation
% U+ y" O9 N! ~" K5 }$ Vset trade-record-current" s; X( L7 Q( o$ W9 P
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& P' |" _! a3 G
]3 O  G; {! e$ F/ W% K
, P/ f! M- K- h& F
" S" i/ B$ @8 v$ F0 t+ G8 [$ E
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 Y  ~9 N- a* B* h) _3 U8 y
+ Y/ D5 }7 o% v* ~6 x) `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ g* Q. f9 g& |' j% H0 z  U
;;
将此次交易的记录加入到customertrade-record-all1 K. u5 b6 R( ~. [0 \7 `" i
end
9 k/ @" {. P  r( S; I. x+ j/ c" M
( c3 ^$ `' ?$ I! c) S! U/ {to update-local-reputation
, f/ H, t, W4 S3 Aset [trade-record-one-len] of myself length [trade-record-one] of myself
3 m2 d* k/ S, A4 {& C' p, h: {
, ?& h/ n% w4 Q; k" U
" T& p( Q& w4 V1 w" U! P5 r;;if [trade-record-one-len] of myself > 3
: o" A" X6 \! t& o- w% ?+ l5 U
update-neighbor-total+ |7 |) M4 d  d; b; U
;;
更新邻居节点的数目,在此进行
  |% N6 S0 g5 S2 j( }3 b) {let i 31 j7 e9 a2 G6 [* i' m3 x, z& m+ a
let sum-time 0
5 l  J1 Y1 @) G0 t: dwhile[i < [trade-record-one-len] of myself]
  @, m1 z" m, k' K[1 ]8 K, e- S' C* j" V; G' f
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 Y- }% S( `1 i8 W0 X6 xset i
, f4 o9 J0 E2 [/ K6 `) w9 j( i + 1)
" |; {* _+ }0 @* l% y. W
]
2 r% J+ H- m3 Q" I) Jlet j 3/ k$ E5 L: O; p! ]0 y
let sum-money 0
  C9 h+ O0 P" d" z- [! @while[j < [trade-record-one-len] of myself]
& T, L" k" J( c8 q  {0 B[$ {8 W9 t  m$ P- ]6 t- W
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)8 z$ J; o. r" l* ^+ }/ t
set j
! X) x# L, D* ?: X2 K( j + 1)
) V# }& _" q' `% a" H* B( Z6 i
]
! t: ~- y  e) P. @: q% K( g% Olet k 3
: J4 c4 H# y% D" C+ Nlet power 0% N! q1 S( A& w; k4 b' d) k
let local 0
% R3 y( p) z4 Pwhile [k <[trade-record-one-len] of myself]$ u$ [7 R6 e) x" c
[5 k* p, G( c( E- a, j3 {
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)
; [' f# f( H( X/ c) jset k (k + 1)
! F" P" M) Z2 ?4 G8 x]' B2 x( Z. G7 Z" m: G0 Z
set [local-reputation] of myself (local)7 C) k/ L, c7 A# z
end# n+ w4 j# M: ~1 P

! Y" S7 x7 [  U/ jto update-neighbor-total
# g1 C% K* G% P. o% H* p9 k  s1 `- b8 v# r) G
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ G. F8 c8 z" m
5 A/ Q! ]  \0 ?: j2 q# k: g; n: Q( g

' f" D  K. w( l/ x6 Z% F7 Q8 iend
9 S6 v: H1 P1 x5 Y& s; k  T! f1 L8 t  v9 B# p
to update-credibility-ijl
- S* B  R9 E4 b  Q9 |( M* t2 A! z' A9 J1 A6 a. V/ y/ E* ~
;;
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。# }* H, N5 z( ~( @( X- r
let l 0
/ U5 N# k  Q$ p8 U# l; r+ F% B9 Ywhile[ l < people ]
' T. o  o) N, ]. T/ _+ Z;;
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8 m! H; R/ M& R
[
3 y6 V# L' o1 Q" Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" C' i1 D0 T2 wif (trade-record-one-j-l-len > 3)
4 T* R. s1 T6 U: n! ]- t1 j[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+ u9 Y3 D7 C7 o, C' r5 }
let i 3
6 j5 r5 P) q% l2 Klet sum-time 08 R6 ^; ?5 E6 J
while[i < trade-record-one-len]" e( y! ?( f; C& }
[# \  a2 x/ m2 L, D0 e' V+ z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 F0 y4 W+ k) s% G, r
set i1 D# W0 {7 s" K! @$ |
( i + 1)
  R; m+ j  C( z5 s* V
]
  v3 m' g% J1 _, V+ A) }let credibility-i-j-l 0
+ f: s! \# D; n- n! \% i1 v. h;;i
评价(jjl的评价)
# |' l4 P" t/ ]+ S$ U" Z3 \* E. M, K: Mlet j 3
9 l0 ]% Q9 d* S) b3 m3 S. nlet k 44 \$ x8 d9 ^7 ^( w
while[j < trade-record-one-len]$ {6 {9 g* o6 U3 E7 B0 [
[
; G, L6 U" j4 O. e0 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. s; b' z7 y' @5 T0 u! M
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)) J. B& [6 v: c2 q$ Z8 k
set j
6 {+ C* Y) b6 ?( j + 1)

/ j3 K7 d( U5 @9 Q]. q+ @/ R; Y- M, P, O  u- 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 ))
" m0 }, U& a  b! A
% k/ F: Z* _8 t/ ?) Q; L0 E2 w! P
  r  C! h1 C% \7 _) v
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% |7 p, h* S! X  X: ~5 t;;
及时更新il的评价质量的评价
. h& S, f; q- k/ s# ]set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# O: r0 u4 z. J6 z. ~' V/ rset l (l + 1)
% Q; b) S: b/ H, [. |9 s# M, y]
4 ~- W; ^3 ]* G) M1 g* @' Z6 j7 F1 Nend0 j+ G) w9 Z2 o3 T$ g$ x9 }

+ W* i# j& V$ \* v2 \3 xto update-credibility-list
' b5 Z! J5 F8 c* S& glet i 0
1 D2 \9 x( K, ~$ N! W' Rwhile[i < people]
' F& e5 M2 y% ~: V[
0 E9 U+ B3 v& p1 d1 Qlet j 0
# ?& p  m5 U$ p. Y, e+ p* I3 W& Ulet note 0! Z) [: V; `) z2 Z0 _1 [
let k 0% y" H4 m% Q! j7 p
;;
计作出过评价的邻居节点的数目
, L! d+ I. ?3 e) d0 A  q- hwhile[j < people]6 S3 y2 m" ^  G
[& y9 \5 K# Z! j1 ^' b# ~( I
if (item j( [credibility] of turtle (i + 1)) != -1)6 J# v* J  N& J7 a4 y4 Q
;;
判断是否给本turtle的评价质量做出过评价的节点
, Y' e$ m% U3 p$ Z1 T1 i[set note (note + item j ([credibility]of turtle (i + 1)))
$ H; K4 W/ x. C. p+ t% T& r* \;;*(exp (-(people - 2)))/(people - 2))]

4 o! C$ S! V  |1 b8 g% F( S& K$ @( gset k (k + 1)
9 A4 v2 Z% y5 j- M" }5 e2 _# @; u]5 ~) p% o# x$ U# j* h/ D0 O, K
set j (j + 1)% s* h& o5 p* c$ }% t/ u
]3 e7 z' ^! D  q+ u# D$ M* t1 e& T
set note (note *(exp (- (1 / k)))/ k)8 y6 ~# Z- ]# J# W
set credibility-list (replace-item i credibility-list note)( D% j' o4 z+ U3 ]7 W$ a3 I
set i (i + 1)- Z! e  f5 I1 m7 c- U
]
6 k5 i- o0 B4 J1 g  s* fend
6 T5 d. T5 B. N( f2 ?7 P
$ F: v# M, E* W) zto update-global-reputation-list9 L/ b) M( f% Q! Y9 R! }& f/ _
let j 04 F/ p/ Q' U  x! z/ O$ I7 E! v! e
while[j < people]
+ q- I! k4 u: A' Z% G" D! N/ R/ J[+ C/ w2 u- S  L( s, \: ~
let new 0
! a7 _* g# d. r: m9 V2 G;;
暂存新的一个全局声誉
( O, B' L! C. G+ Tlet i 0. K, @% c" {) O7 q
let sum-money 0
* N  d& F, e. Q/ F& Tlet credibility-money 0
, q( R4 K$ s# a# a8 U* N3 Q' Hwhile [i < people]
/ X. h6 a' i# D, ^[
5 X! L: Q4 W2 q: H% D7 F) Mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) k  I) c7 p5 j0 f/ A2 ?; H
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 n: R  a% I; Aset i (i + 1)
. a' Y. P# P5 W/ {' W- @/ y]+ C) H3 B2 ^4 P3 K$ B
let k 0/ @8 N3 E7 m, T8 e) `; t
let new1 0
4 I5 B( F7 a2 `  {8 e: wwhile [k < people]( }* Z% M6 v$ t* Y; m# V! R) ^
[3 a! e1 ~( o8 G. o
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)7 V/ B  x2 a9 X8 ~3 D4 g: n9 v' o
set k (k + 1)
# q0 N5 x2 A! Y# ~( f( N" X8 B]! S% J: K4 }' c2 B1 _  ^( _
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - n$ d8 \3 j9 k
set global-reputation-list (replace-item j global-reputation-list new)
+ k8 f3 i4 x/ R3 pset j (j + 1)) ]  _9 o) C( H& h6 X8 Z, U
]
! G/ X6 ^" D( Q. S/ k5 b& Hend% v) a$ Z( V5 v; w

3 V& c3 R: A0 L  @6 U
1 o+ K( M! u- r" a1 R- R, ^
- G* q$ b; q" v; ]- K8 C- c6 xto get-color; w* Q4 @- B' |6 Y

$ X% W- ^1 y: y+ Z' |$ y: K1 tset color blue
' Z! b  T) p8 z
end
" @$ L& @( K+ f! L( T: i, }2 r$ D2 \. b4 R/ [* w; h  ^, G6 n$ g
to poll-class* R% l5 b2 E4 a. O; `
end/ T# G6 E1 ~  `: f  A7 J5 S) S+ \
, X/ u; }$ L) i3 f# s
to setup-plot1* D! R7 G/ v4 B  `" k. s( t

! V6 \6 M. g$ c# ^! X5 T) fset-current-plot "Trends-of-Local-reputation"
9 g) y7 X  T3 _8 H
2 Y5 b5 G( G- W! \
set-plot-x-range 0 xmax
2 Q+ D* x9 ]7 }+ ^# U4 X  D

7 t" z/ t2 `$ s5 d+ ]" G9 |set-plot-y-range 0.0 ymax
4 T2 s/ S; S4 m% m# [) h
end0 \$ E3 f/ h1 @& }. P
' @; }7 f, w  L& O( f! Y& t
to setup-plot2
7 J# F" W5 ?' D; u7 `$ j( I2 c7 ^, j; A9 r4 E2 g
set-current-plot "Trends-of-global-reputation"

) ^9 C; K3 E2 z4 b8 S: a; @! a0 x3 X/ l' F7 N+ Z/ N' y
set-plot-x-range 0 xmax

% }! M  W3 G# I& c! c, W' ]  l; m9 W8 j8 c# ]0 Y/ Z0 Q3 x4 }
set-plot-y-range 0.0 ymax

" n* k$ I0 G- H: j7 Dend
6 a& r# N0 [/ y! O& r1 }* n' E/ l% l9 i( v
to setup-plot3
9 c9 C8 \7 [6 T; k
3 G/ u. w6 s$ z: `+ lset-current-plot "Trends-of-credibility"

5 B% f. o8 S4 ~6 u8 W3 t
# u( K, |% ^; U5 p3 S4 v" ^set-plot-x-range 0 xmax
8 k7 H; V* t, m! C9 J

/ P; ~' W  B2 ?( M- d: E$ Zset-plot-y-range 0.0 ymax

4 ]! [+ c! |9 r0 @6 I/ f9 _) o6 bend
, O, a5 d, h- ]' m9 d3 E/ j& H* F
to do-plots" V- O6 F% j, g  E# M6 P5 x% v
set-current-plot "Trends-of-Local-reputation"# |- a5 c7 _9 Z( S
set-current-plot-pen "Honest service"
4 W* }& e5 X" h2 Nend
) p8 T; A- V! f" Q
$ g5 W7 f* O+ V, n[ 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.+ ?  r$ x, k( g% L! ~+ I

$ z6 m$ M7 I  W( h$ Z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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