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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:+ H# ]  N3 v" G
to do-business
1 n$ W2 D, k8 E/ h6 }- i9 j. v rt random 360
9 @! C. r) A2 h fd 1
" a% A# \9 d9 E# S1 |- D/ m ifelse(other turtles-here != nobody)[
& K4 U: K% k6 L) H; Y   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.; a6 m9 x. j: v( j! m
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 b8 D( U# A3 X/ e& e   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( W4 c% Q! ^6 r' [. I   set [trade-record-one-len] of self length [trade-record-one] of self: D' M7 C; m, i  E" r8 v% J
   set trade-record-current( list (timer) (random money-upper-limit))
8 Z8 S3 a+ L) E6 o8 ^( y5 ^
) T9 s1 n, G4 b; Q- L# x' Q. B+ ~问题的提示如下:
  J& s5 W# K% W' r
0 ~4 I" |6 y' [error while turtle 50 running OF in procedure DO-BUSINESS8 i  L4 \! K, ^# W9 ^. y7 K
  called by procedure GO
+ z1 U8 E! B' iOF expected input to be a turtle agentset or turtle but got NOBODY instead.' E+ s3 q  r/ M" `9 p
(halted running of go)
% t: j  H+ a- R2 f9 I9 D2 @
' q4 Q  h, S& a这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~8 P$ B7 m+ V( m! u* `# P) A
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9 R3 O- L' d8 a' {  G
globals[
% ^6 ?& h% I2 z3 M0 pxmax# @. R) B" u" R4 r2 W1 S7 ^7 @* D" S
ymax
3 b+ x" r: P: B: G0 i& Q9 ?. Z, ~1 Iglobal-reputation-list
. T7 ^8 |- H5 s6 x  {+ i! R
/ e. ?2 T3 [% h;;
每一个turtle的全局声誉都存在此LIST3 g2 k3 ~/ ?! E; _! r) s0 m
credibility-list  }+ v; d! Y% [
;;
每一个turtle的评价可信度7 u( R5 N8 d( e( ~
honest-service/ e. ^' e4 P4 L7 n
unhonest-service
4 X/ j* Y* _* ]  \oscillation
, M' t+ m! J5 R7 q* |- q$ grand-dynamic$ j* _% m: K$ z+ k
]
( C6 e+ X4 H! D0 }' \. E- [+ j" x5 Q( o9 K
turtles-own[
  D1 A$ I  I7 B' etrade-record-all# l: R# ?! f5 t7 Q& m9 O
;;a list of lists,
trade-record-one组成" c  k1 g% T9 W# y  }" X6 q$ [
trade-record-one
4 G/ H/ P3 ~9 l;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  D- I! p: Y6 y# j6 W' |+ g$ q" R
! o0 p- C  ~& h; n) D;;[
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]]# i5 b2 e) T5 [
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]
3 r* h" w% _- z3 q! Gcredibility-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
$ }0 w+ j7 k/ }& z$ I9 tneighbor-total8 t) Z+ ~/ t) o
;;
记录该turtle的邻居节点的数目
4 R3 l0 R5 S3 |trade-time. X4 J/ d" M+ i, n- o$ w
;;
当前发生交易的turtle的交易时间
: J5 j/ {. T9 xappraise-give
* R( R! x. m+ W2 ?9 X/ Y;;
当前发生交易时给出的评价
9 F6 v& i2 J; @8 @- e3 yappraise-receive2 g. u* O6 Y2 T) A
;;
当前发生交易时收到的评价
7 d6 g9 n4 u* ]  |5 A* happraise-time
4 v; y" G2 \7 J! \# T$ n;;
当前发生交易时的评价时间& q) B# V4 J3 r- k2 m8 T
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
  ]( z+ [4 l4 S$ ktrade-times-total
" z0 g1 ?+ I  k3 b. u. Q;;
与当前turtle的交易总次数- B% J) [6 T0 i+ T- k
trade-money-total
1 x' H% M2 P7 q( Q8 `# U' s" y( x;;
与当前turtle的交易总金额0 w2 w* H5 D# n, |3 w
local-reputation7 l1 y& n/ Z: w
global-reputation
5 D) ?4 p% H5 R' |3 Q/ y( |) ecredibility
  F+ X6 h: V( H+ {;;
评价可信度,每次交易后都需要更新* Q' Z, y% V6 L/ P0 h: l# Y# G
credibility-all
( \4 ^5 w% c9 K+ U;;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
0 \9 [+ k7 r* S' T9 W  u- r
3 T( A/ R* L  h0 G) o: J;;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
" T* R& m& Y; [* f/ Scredibility-one
2 n% l) f% v% X0 _8 w3 [3 ?;;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; }8 ?3 y' Y- S0 {
global-proportion$ Z) ?  M0 k+ Q+ g6 Z+ q" C
customer+ @9 F+ s; N% G
customer-no
0 B+ p8 O* N: h; a( R+ Ytrust-ok
4 [1 P, L2 D& ^) d  V( Strade-record-one-len;;trade-record-one的长度7 L4 T4 l* ~! g7 j
]7 a; Z) ~7 I! F/ ?* a- t, d
- k# |& B0 z, d- V/ q$ {4 ^; @7 [8 S
;;setup procedure
6 j2 K4 Y( }4 b
0 B! ~. ~' _- O$ S2 y% ^1 ^to setup" k: j/ V8 x" E% v1 \- I4 `5 ?7 k& P

/ a# C0 Z: [6 Y. b0 D; fca

( D" @( M! J1 \: F  S' n! X: w. ?3 h0 v5 F
initialize-settings

0 P6 \0 d: \1 E) P% i( b  k3 k" I& w' W, I4 p) C- u% J0 s
crt people [setup-turtles]
0 V% g! _* j* ?% F5 ^" g2 I) |% H

6 Z# h1 |$ E, X/ A0 c) Sreset-timer
: K2 f& L: y) z4 z+ b
; g7 g) F; u, _
poll-class
( F9 U% O/ }/ A" r8 u+ r9 F

/ h3 v6 q) o5 L  H6 T/ A. Q$ Bsetup-plots
, S) }3 Z  s3 ?8 {2 \; o

- M0 S( B: N9 x' P) m9 t/ a; v9 Ado-plots
5 }% Y2 Y& y1 k9 Z
end
! C2 x, M, N1 i  \* t" u
: d' l$ @# R7 [" h6 Ato initialize-settings
% M4 _* R! v/ [  h, m1 d* ^3 z% n
set global-reputation-list []

0 S9 s3 u' L, ~/ [8 f( d
% ?& Z& o4 c  V2 qset credibility-list n-values people [0.5]
/ w) [  `9 G) i

  q$ l& x* z2 D; T- vset honest-service 0

& V) ~* S& Z" L4 |* C( [6 x
4 n1 e1 p' J3 A' r9 F4 j' Aset unhonest-service 0

: x, m6 D% o) m( X+ H# m$ E( l2 }5 ^
, I5 j/ V! a; e7 J8 wset oscillation 0
+ V. g& @1 X3 a$ V
  q$ [6 ~8 X+ T3 b1 x; ^9 F
set rand-dynamic 0

$ n) w8 @* S5 u& q3 ]# |end
7 X3 w( C0 j2 F
2 ]- C: @% Y; j3 o- oto setup-turtles * I. E* h( N4 y# d
set shape "person"
! F/ F; I$ f, Dsetxy random-xcor random-ycor2 g9 Z# C) L4 r2 ?
set trade-record-one []' ]. d  e, y! T! v# z
, W. j* O1 @8 Z; a  K& L( a
set trade-record-all n-values people [(list (? + 1) 0 0)]
& @6 \( y3 I  X0 f) @6 {, G
" @1 L; b' u6 L- O, N
set trade-record-current []% E9 f( j0 e' [7 t) Q( {' Y7 o
set credibility-receive []( H8 p  w2 |. j  `" ^2 V
set local-reputation 0.5) l' a* w5 _2 {' J$ @
set neighbor-total 0
. b2 K+ F8 q  ]* E9 T9 kset trade-times-total 0
" f, l# [4 r2 c" aset trade-money-total 0
$ O) ]* s  \5 dset customer nobody
4 a/ T3 j2 k! J" T' ]7 fset credibility-all n-values people [creat-credibility]
  O! ^( `" K- X  dset credibility n-values people [-1]
. X2 ?/ A4 Q- r7 r9 T  Oget-color/ y  _; _- M+ |, S$ R7 x7 F- C

, }1 M6 R3 S- B7 L1 c8 @! Pend3 V* n1 x- b3 q* K; t

5 d- F( y% r) w9 r  ]5 V9 eto-report creat-credibility
( K# B; {: R9 t& u4 x) Creport n-values people [0.5]
. T$ {1 Q. l" M( W. ~) D5 C$ h: i& Oend
# k' s1 E! R- \0 n5 X- M7 \( n
" t3 H7 c. f: n0 I, n9 qto setup-plots
$ |6 Q" i2 s( G* M8 A$ X/ E* F# g0 }0 L9 i0 K7 f8 ]0 Y+ ?
set xmax 30

# T! q% M9 m, J' q9 j# r/ X( U6 c: P& P# }5 V+ I; @
set ymax 1.0
' D# v* d3 H, d5 M

4 d5 p6 |  b% ~clear-all-plots
! C5 Z+ H! y! T( N

3 {2 G1 R2 i, s$ U- r: Usetup-plot1
8 W3 {; @" w" p& {  ~
4 I0 J) A/ d$ C  }3 I( U( o. c8 p
setup-plot2
  o& h% K- y) T9 y( e$ Y3 e5 F
! x& J/ v$ E( z$ K1 P
setup-plot3
. Q) F& E; @  `3 R; b! F  N
end+ t: ?1 u' l' N, b) C( O- R: `
" i: r* f7 e' B8 x% V
;;run time procedures4 L% \: d7 B4 L- B" [

3 ?6 j! I& @4 |to go9 h7 h) {! {3 e% Y. U- G$ A, m) k
! Z% [" b+ V) d" V* z* }8 t# R0 v
ask turtles [do-business]

3 Z! q6 ?# m) Y9 ], kend2 Y/ T) x: q! Z' @  _' F
' P, l' p1 Z) _$ ^# d8 F& I; d
to do-business 3 ]& @/ N/ g  r9 U+ o' p* v% a

5 B/ u, j% l/ S% Y4 `/ I1 ^7 v- B1 g0 F
rt random 360
/ ]9 _1 |) t. i" g

! {) r( q; E; ?; Y+ U. X  sfd 1

9 T! }5 A. l. k* R
3 W8 n; R" O9 M, t: Sifelse(other turtles-here != nobody)[
& V/ l* R, V0 @
4 J. O1 o1 R* W8 g: ?7 ?1 g1 N2 D+ _
set customer one-of other turtles-here
/ G/ E+ w- X. O' v4 T3 }

2 f$ @) z6 ]' \0 I1 Y' p' A/ [7 `7 W;; set [customer] of customer myself
: s, T0 t- P0 i# B" ]

" q+ y) F) Z6 [0 k4 M! l5 U6 d8 t- dset [trade-record-one] of self item (([who] of customer) - 1)7 u5 G; M. w" C7 @
[trade-record-all]of self/ L& }. x  z/ d- E! s' I6 F' |3 Y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ A& N5 {4 p3 X4 j5 P' Y* h: }6 j
; n# ]5 Y0 H8 I# w- }$ r3 s
set [trade-record-one] of customer item (([who] of self) - 1), V! M6 z- d4 r1 ^
[trade-record-all]of customer
& f0 ^* C9 J% q8 F$ A1 R, R
4 @. h3 }% ]4 Z& _& h3 y
set [trade-record-one-len] of self length [trade-record-one] of self
2 S8 H9 y7 s4 F. z

  o# }  i% j/ W4 l2 Tset trade-record-current( list (timer) (random money-upper-limit))
& A& F8 F0 O! j0 X

) {5 F3 c$ z" _7 U8 L3 eask self [do-trust]& d) H& Q2 b* S% K0 }
;;
先求ij的信任度1 f9 J+ `) d; S3 ]

- A: @; u# `, d- _4 _if ([trust-ok] of self)
- h7 h2 C/ F* F$ O. |- C;;
根据ij的信任度来决定是否与j进行交易[$ V% W. u! V% k+ N1 L
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; B6 p, K! q5 m  `

" F) F  L  J9 f0 }% E[
6 R0 z! L4 C6 g9 r
5 @3 o, e, x+ E# J4 S; L+ e
do-trade
, F6 R. Z$ ~' Z3 \8 U: z# Z: a

7 u3 W+ A4 q4 ], rupdate-credibility-ijl
1 u/ k3 n2 ?+ C

1 s5 L( t6 e: B3 I9 L: P) d0 V. m; z9 |update-credibility-list# {+ Q8 N, X; e8 U0 Q2 L7 `
/ j' `3 B7 X3 ]/ U1 B/ L& L

( {/ p" b" R. u- \( a( Z( g9 supdate-global-reputation-list
6 g* E8 Y% V6 g% B% J
  @! j% L. J4 \8 d% q( N  X+ S' {  O
poll-class

4 w2 K4 V: X9 f0 A( C2 E
2 o+ [- A3 o% q" P/ J% r; i' gget-color

% D- ^# K% a7 W- _# X, G& R2 u% @8 G  \; L8 T1 M0 `* M' B
]]
" ]1 v' N5 E8 W, A
- k4 E' m) X9 y7 y. j) E' H" b;;
如果所得的信任度满足条件,则进行交易% C7 L$ M( c( a  E1 W

1 u4 T8 b" O  z1 F[

) K2 v+ X, e7 u. K" u7 z! e( _6 M! y$ t5 U  h
rt random 360
5 K  k4 _8 a# ^( S. A8 h

3 N* W) q7 F/ b& hfd 1
. B8 R: ^) @- _+ z( I+ v
. @/ f4 H# }. J- Z
]
8 _: p2 }, g- y8 N

) y2 y/ q; u" N: F/ r6 ~* Q' Eend
( W: D) e* l4 o. v1 m* O

9 ?8 A" g- q$ Q6 \5 R- @% Ito do-trust
  J4 v5 q$ S! z- T2 k( vset trust-ok False
5 z7 {. t# F6 ~: m
% J; s7 j. u9 ^5 ^
) g! J8 z. L% _$ z2 t. C4 M
let max-trade-times 0' I7 @7 l" }9 e4 |! J9 x; P* d
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% o% i. X0 [% x6 t$ v+ b
let max-trade-money 0
6 }$ D: z$ b" b8 Q: c) xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 M3 H& S' r/ R5 n0 U" J$ B! c
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% Z9 r9 \6 z) J$ E, C5 k- {
: I+ i, N+ _0 E2 B  |) @+ s- q
* ?# E. |$ s5 v4 o! {
get-global-proportion) X3 w9 R+ O, H  h
let trust-value" @+ b" n  b* C) }0 v
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)
: q9 d: n9 b, \" [
if(trust-value > trade-trust-value)2 m1 n7 S8 _4 @" N2 d% x
[set trust-ok true]
" \2 _- ^) p. T0 N0 P6 o0 nend
' P/ S. C. _9 M0 ^- l# p& K+ s
8 g. t6 {0 a( q3 z7 O2 p8 ?+ pto get-global-proportion
9 b" e) G& [1 \2 y. difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  M% ^: h# E- h3 c6 @- E: ^5 h
[set global-proportion 0]$ ~& b- j& c, n
[let i 04 V  a" h1 [% X& d4 S% I' f
let sum-money 0
6 A; g5 S9 {  E8 q( {while[ i < people]. J1 Q  E% N! o% T1 x' M  b
[
, H' q& \/ Y* e+ ~" a. Mif( length (item i/ ]/ I3 ]' d! s4 ^+ h2 I: V
[trade-record-all] of customer) > 3 )

; X# c0 M$ q7 M. t2 h3 h' j# R/ T[7 |+ O  v' _& q; @! W
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" _4 n- z) Q4 S) c+ b
]
/ C4 w# R# @- {8 A4 R  G]
) ~4 d# F3 e  q: `: E  ^2 i& n0 n, plet j 07 G0 z+ ~3 M# _' V
let note 0! J: k& [$ a' M* k
while[ j < people]1 T8 x1 l0 v5 i1 R1 h3 g
[
  B, z" w! P6 _+ k' O. Rif( length (item i- y0 ]$ l; U7 f- E$ w% @8 i# j5 i
[trade-record-all] of customer) > 3 )
3 k% d* |/ ^/ h3 ]8 {
[0 `/ Z% E3 I5 V& F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 l* G7 k4 p7 }/ S6 v* M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 @( O( p  F, k[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! s( r; ?8 C1 g7 G
]5 `$ m+ L  h, u, \+ ^
]
. Z, O/ g* n0 A2 ^/ C% Xset global-proportion note
- ^2 ]* e: m* A- U6 F+ X! D) X]7 X6 Y: V7 q3 E1 {
end3 ~8 _3 _+ d  |+ ^4 {( q6 {

$ s! d, {  O" t- T9 pto do-trade
. l  [" ?; B% L0 f# k;;
这个过程实际上是给双方作出评价的过程2 _$ w2 l/ G' M) ~0 s! l+ |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ f9 g  E& H$ W) o6 w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
4 \# x/ G3 n# H. Iset trade-record-current lput(timer) trade-record-current9 V7 o8 A) ^) E% i6 }1 S
;;
评价时间
; h/ S) c$ A+ U" g4 I& E- hask myself [
9 A0 S0 v" Q, i* H' n& }! A# Lupdate-local-reputation
; I2 n& y7 n. R: L& R) wset trade-record-current lput([local-reputation] of myself) trade-record-current( a7 O1 D' Z# _& s, Z
]+ b& V4 a* c% k9 r( v( t6 V& f) P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 Z7 Z: d3 ~/ g) R0 B
;;
将此次交易的记录加入到trade-record-one  N. d6 S& ?2 W) Y6 ?* Y9 X" h6 w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! D$ O& I7 x1 W8 ^6 r* c3 R0 N5 k
let note (item 2 trade-record-current )6 ?7 N' S$ d- O2 u
set trade-record-current8 ?8 k0 f4 ~  {# ?
(replace-item 2 trade-record-current (item 3 trade-record-current))
' E& f: U$ y1 ~5 @$ j! u
set trade-record-current
( X6 s  s' t4 @(replace-item 3 trade-record-current note)7 j' h- s: w- U/ h0 e9 I

( l, Y& K# ~. I! n' I% l

% X* U1 {8 t( O! F) o0 Zask customer [* L0 e  k& b# w/ m8 h5 f/ H
update-local-reputation3 C4 f# l" C0 s4 z3 q2 R
set trade-record-current
$ V, d- p2 a- T. R7 `$ M, h(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% f& j8 S* i0 s" u0 l" `2 h]0 o) l* t! K; X, ?7 D

* Q/ Y1 t/ e- f7 M  n$ D
+ S# `: z& S7 i0 A
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% Y8 l  o2 D5 o( u) z

* j' `) m1 C; ^( b; \9 t0 sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ g8 Q2 B. F% K  `2 d9 n  D: D;;
将此次交易的记录加入到customertrade-record-all4 K2 d3 R4 W7 Y# x) r
end
2 n3 j6 g* n: [9 D
3 X- ~  C, r; z* Nto update-local-reputation
$ ?$ S$ `, f6 N; aset [trade-record-one-len] of myself length [trade-record-one] of myself
& k4 H! g: M7 u) `( n3 H4 \- X: L) G$ w7 h$ @
  u1 S5 x0 f" y2 L9 C8 `
;;if [trade-record-one-len] of myself > 3

3 K: v4 M5 r# y# S: Q! Rupdate-neighbor-total) N6 S3 ]' i/ `/ C' z3 S  _
;;
更新邻居节点的数目,在此进行3 y4 N7 L$ g. {+ w$ e& G3 e
let i 38 I0 J5 E% P: G6 X- x
let sum-time 09 ?  J. B: M+ u
while[i < [trade-record-one-len] of myself]1 [- Y) P! _: n+ Q( R0 v/ Y) m
[
1 s' c% h, G3 H* ]% A6 {" q7 ~/ ^set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. U/ z; [0 i: D4 rset i
0 B: }0 r2 n2 W8 ~* ^( i + 1)
3 G0 w6 x$ W; i* j9 Q6 ?
]
! G* E/ N! K$ W, t% O9 B: \let j 3% m% S% @  D, `
let sum-money 0, k8 k0 Y+ h0 f6 J! ], t
while[j < [trade-record-one-len] of myself]1 C4 g/ T# {4 [8 ^6 O2 P) C* V
[9 I+ D( F8 ^# q- r- ^( l
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)" G- [- _4 |4 m6 n; M/ v9 b
set j
4 V4 A0 Z/ P+ Z5 n( j + 1)

+ ]" m! j# z9 ?' \: @! _8 S]3 W5 v" m6 c6 S: y1 ]
let k 35 }( Y: i' M  U
let power 0" y* ]5 f  p6 i2 l& A- Z) y  ]4 w
let local 0
/ v- I3 z% K! H  x  l; }! Cwhile [k <[trade-record-one-len] of myself]+ j, k) g+ p$ f1 X$ N
[- H6 u& Z; [5 a1 z3 I) L0 J+ C
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)
  y/ I: x  f/ J: n$ n9 hset k (k + 1)
/ a. C1 x7 W7 e0 `3 Z7 z]
; K* t+ F& W  gset [local-reputation] of myself (local)
3 s: ~8 U  Z! mend
1 s$ v. h0 m8 X$ k) F  y/ d  A* \/ [( R4 Y2 I& j/ u2 P9 q% \
to update-neighbor-total
5 v+ S# s6 _. Z& U% Z8 M! M' |( _) x' b5 j5 [9 R
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: ^5 }. }( O- `, T. L; V: q

- P8 O- [; i( f4 g. [9 G9 W
3 r$ h& d& P# z+ P) i% t/ R: P8 \) I
end' I  \! m# w; u7 a
5 G8 {6 I2 k% W: A0 J; k6 }
to update-credibility-ijl
% F2 d" J+ R; D7 }% c) B
5 B: J% M: K7 L: D$ @;;
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。
2 P# C4 h# ?, T: l) Llet l 0
/ a9 J' w- ^/ M, fwhile[ l < people ]8 `& S1 h7 z# Z3 r+ w1 f; s, g
;;
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+ p  `: m- D3 H  V6 s( S. P; g5 J[
% l6 \" Y+ K3 B0 o! ~: Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)+ m& r# W) L* K4 q1 {$ e
if (trade-record-one-j-l-len > 3)
! h; n- r- G6 @# q/ u% r& @[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
0 j& P5 E. T$ q6 Olet i 3
7 q: O% H- J# x" H3 a: x" L4 b, Tlet sum-time 0
- a. Y9 U1 T4 r2 s, B/ Cwhile[i < trade-record-one-len]7 j  R* |! N, N% U7 J
[5 l2 }/ M; ^8 O( N0 J: a1 Z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): S* `9 H# {4 z& R$ t5 M+ {4 O" K
set i2 t* |- V# g$ w1 R& ~( `$ L
( i + 1)

! [1 I8 ?/ D# H7 D]
1 m" k  ~8 f2 i, u1 `) T' D" A$ nlet credibility-i-j-l 0) Y$ g% E5 i+ H6 Q# x
;;i
评价(jjl的评价)
; _" K  O' m( m2 z5 S+ b- w8 }$ plet j 3
/ c" ^9 a" F, Z3 C* |& B* \let k 4
; a% E: g$ g- G& B1 S# ]) _; owhile[j < trade-record-one-len]
+ w& M  @# e, J; C; ^' q& r[* K) C" n  }, I, |
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3 e* w* u/ I3 L+ v$ T6 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)4 @" n/ z# e5 _
set j; }* d& e" {1 D+ ~; E' N) y. O; z
( j + 1)
" u7 n% s5 @  p9 G' ~9 N
]; `  J" S: A6 F* W+ ^8 n5 G
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 ))
* N5 v, F' p' X3 r7 y! q( E. \; `# |9 G) Z' `+ q  j
0 o- y5 v2 M9 _) D9 c' ?( L
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
' v- l, U* {& f/ |( Z* \1 x7 K;;
及时更新il的评价质量的评价
3 r! i9 Z7 Z  i5 ^( Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  n& ~7 `4 ~  u8 b4 B
set l (l + 1)
( j: c7 v1 Q1 {4 @% T' c]
+ s$ n, C+ d  Iend  m9 }9 |7 [" j
* R6 t# w2 E5 L) S* F8 N" g
to update-credibility-list
- m: _* e9 r( m# C7 I- L  J) Zlet i 0
/ E9 X$ K8 @  u, \4 Z3 K) vwhile[i < people]9 L4 f$ x4 X% c4 z: e" s
[
/ G6 P  {' R0 L9 ~. y6 Plet j 0
. u. s- a3 q# I7 ]# w4 alet note 08 x& C( c7 W7 z# X1 C
let k 0
* C% v# N/ v' P0 ~# Q6 h;;
计作出过评价的邻居节点的数目
3 ]. C5 s. w* R& _" O5 P/ }while[j < people]' [, `7 y- i" I1 x+ j) @
[
# Q' X# \, {) a+ ]+ R+ E/ Eif (item j( [credibility] of turtle (i + 1)) != -1)! X8 ?+ @8 g4 F& \( q
;;
判断是否给本turtle的评价质量做出过评价的节点
0 \5 [: ?1 Y/ C+ g. s6 x( Q# M[set note (note + item j ([credibility]of turtle (i + 1)))
( X6 n: N  x, w9 j6 M3 I( V( Y;;*(exp (-(people - 2)))/(people - 2))]
' o4 r1 W& ]% E, f' H' ?4 X0 V
set k (k + 1); p  P* ^7 B4 F* y/ B
]
' B% M6 A; L5 R6 oset j (j + 1)2 Z( w8 S, j/ J0 m' m, T3 n! o
]
. n4 d6 i# F/ G+ o4 r+ f* F! sset note (note *(exp (- (1 / k)))/ k)
( L$ r+ P& W+ i9 Gset credibility-list (replace-item i credibility-list note)4 w8 P/ ~* T$ e
set i (i + 1), o" ^8 k' L) |8 C, k7 v# v
]
3 o. v. L8 `. V, c$ x2 A. N$ b# M) lend
$ K" `* J' L8 W- x& V
& L+ ]! \7 \- v" f) }  v+ O/ wto update-global-reputation-list
. A& U$ {: v& S5 W; ]let j 08 `& O) F7 l$ y( n$ x
while[j < people]
( l4 B7 E2 N' l7 ^0 i[
" D! k$ f# \0 j8 _( blet new 0
- G) Z1 e  p/ N$ {( [9 @;;
暂存新的一个全局声誉
7 \, L( B# q+ y5 S: B  `let i 06 \, \- W. ]& a7 s8 N3 m# [  Q
let sum-money 09 n; G: p! R: _- D6 n
let credibility-money 08 w; Z6 {! s4 S& Z. S" ^
while [i < people]
6 \( s" \9 [. w; {[! a7 d& O5 J5 m, a5 F4 X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# s) {9 X9 n" Sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" @! M4 Z; v& X  h* \3 p: I. U# y
set i (i + 1)- `* ~$ g3 Y) A( {  P' _, H3 M/ L
]
; I! y# ]) x: V+ n- Qlet k 02 m; W5 l0 S% i; U) y+ u; @
let new1 0$ e+ I7 W" X+ ^" ?4 P6 D5 `
while [k < people]
- x+ M  v0 s' l( \) x* S! p( t[* k8 i6 H2 R( O7 [; t3 v
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). G6 A' n8 K1 }0 ]
set k (k + 1)/ O$ L  M. s1 ~& W- l0 c
]
& }6 H0 S9 [/ s# F9 e# R3 o* }set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 ?7 Q! K0 `5 l& j6 H/ Y2 w. U( Uset global-reputation-list (replace-item j global-reputation-list new)
, R! [1 ?# ?4 {* n4 N9 Q& gset j (j + 1)$ [# n( r( L1 R6 h7 w
]
6 E" u) b; G. pend/ D/ L! V+ B' V3 D
7 N" p( W, x& ^

6 {% ~( R0 z2 Z1 N% T2 b+ B, A% \. S4 {) }& h9 r) j7 E
to get-color
8 U6 J8 E. ]8 M) [- w
( l! C6 s- H# h% h! e9 oset color blue

6 N, ]5 P5 J8 s7 A5 tend
) U& |' Y8 X3 k/ U* _2 @# e- g$ l) O' q, ^
to poll-class
# F6 ]. N7 W2 M6 X* ?end
( i3 ?) X* e7 N7 T, u
, K2 D& [! O$ K# l) E9 z( Pto setup-plot1  Y, C* r9 u) |7 W! I& w
- G8 V, e$ @$ d0 |1 J; e
set-current-plot "Trends-of-Local-reputation"
% {3 G. O2 U: P# V
3 f1 Z8 |+ ^2 Y
set-plot-x-range 0 xmax
% \6 Q" C' d5 \6 |4 F

6 j  t, Y1 F3 q0 {; c) I# oset-plot-y-range 0.0 ymax

( }' q  W9 {: ?% a/ G8 T0 {) uend
, |; \1 \+ w% q$ D+ i/ R6 \
9 N4 L- A8 G2 f; q' z* d& tto setup-plot2
/ S1 p/ v0 w' A9 L9 m8 g4 X, E* b5 Y0 u# |
set-current-plot "Trends-of-global-reputation"

+ |: p9 ~9 c" m( g' X9 Z
. ]  c, S- U  W/ Dset-plot-x-range 0 xmax

  Z* Y' _- G) c7 h6 W/ X+ l, O$ v2 J! v. ]( `
set-plot-y-range 0.0 ymax
7 ?/ i- x+ F9 ?2 F$ w/ s
end
- Y6 M2 G' G( ]1 a
2 A. D, W' v+ W" C; }5 t3 e, @to setup-plot3
6 W: S# S" p5 Z! {; i: k# k8 Q
# T7 c" g3 i0 z: aset-current-plot "Trends-of-credibility"

+ B# L# q' n# g0 g$ S; s4 e5 g3 K# r3 t& }) D9 @
set-plot-x-range 0 xmax

  e/ S" j; N7 Y! L4 b, @* q! ?$ y$ P) F5 s# r& {# F& v
set-plot-y-range 0.0 ymax
/ Q. U* P2 o9 S" q
end# b& {! w6 _) v9 E1 C# `4 h
2 Y- k) Y4 l. e1 Z2 R8 W6 H! b
to do-plots
0 r- C+ B, x! \set-current-plot "Trends-of-Local-reputation"' [3 e9 W6 @+ W, B
set-current-plot-pen "Honest service"
. H2 C1 Q* K. g- o/ |! Tend
1 d5 h; R$ U- E: k
- w9 @* v3 W( i  H2 f, [1 P[ 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.5 b' a5 a- c; T& i8 Z( q& ]: T& E

* k7 V) v) f* I, b3 O  J! F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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