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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:
; }% a9 @. q5 q+ S# Zto do-business
! Y/ A) |. u; N rt random 3600 x" S' {3 j9 u% `3 f  j
fd 1
. z/ \0 p. @$ a ifelse(other turtles-here != nobody)[' z2 r" h  h+ {- e8 y3 `
   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.
5 }% e& i" h- Z* Y! Q% E( h5 ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      E- ^, [1 l* O
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( h' S: [4 x3 w2 q   set [trade-record-one-len] of self length [trade-record-one] of self
& f  w3 W& t% |3 c- u% [* T' [   set trade-record-current( list (timer) (random money-upper-limit))% O, @9 V" g  t) _/ `& F& V$ p
0 O$ @1 v8 @5 `$ ?
问题的提示如下:( {% T: k- ?0 N5 n/ _

# |$ Y! i7 A, Jerror while turtle 50 running OF in procedure DO-BUSINESS
; ^  ]- w' ]/ f7 f8 G  called by procedure GO
5 O9 D: P, k* @OF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 _$ P4 m9 G. o2 p! j) _
(halted running of go)3 ~3 Y/ C8 l! i' g- A: ^, F* l

& q$ `$ o! [( C  {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~~5 G  g9 F. `* t/ L1 q- b* \
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
' r4 |, U! C: vglobals[
+ n% ^1 W- S  Z% ?% p4 \, Z; nxmax
$ ?2 X: I. D" p0 oymax( A5 V7 o1 O3 L: M# @. P
global-reputation-list
: {2 H  H* V$ d# B7 C9 F( q: i) U+ M" E' ]
;;
每一个turtle的全局声誉都存在此LIST
- [5 S8 a( }; A1 ]8 l9 k7 o7 Xcredibility-list
6 z" H  C6 v- r" t;;
每一个turtle的评价可信度3 i' o( s/ `! ~: O% l# v7 |
honest-service
4 O. L* V$ K) G: Punhonest-service% a2 J8 L3 o0 R9 Z) `  F' @
oscillation6 b; u: K9 t4 C8 i/ u1 s# }) e/ K- i
rand-dynamic; [5 g/ U' a9 Y  \7 s% l
]( H8 g  a2 g, F
" r# K$ C  y% t4 |
turtles-own[  ?$ r# M1 F7 @) ]7 `
trade-record-all
$ \- g1 D+ k3 f$ m1 ~0 n! F;;a list of lists,
trade-record-one组成: s  C; y! Y& a. h5 ^0 W: C
trade-record-one
7 w. N5 g0 c) n; x- c, }0 e;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: P1 i7 ]0 Y! Y$ W' e; ~1 ^# d* z+ o7 t! x( r. E) o1 D# K$ u
;;[
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]]
6 E( @3 Y: O) D* q+ d. strade-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]
2 M6 n' r! J1 z: a( a8 ~; 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$ @9 C. \2 C3 p" L
neighbor-total
- g- m& r; i8 T+ c( G7 o;;
记录该turtle的邻居节点的数目
: W* \# h* N' ttrade-time
( E0 V5 \5 L8 {0 n;;
当前发生交易的turtle的交易时间
- ~2 B  T' n/ d( jappraise-give. o# F! {$ n5 ?7 Z  \
;;
当前发生交易时给出的评价
- O) ]3 ^5 M# i. M- C. fappraise-receive
1 w. @& B1 ^) a$ i$ v8 |;;
当前发生交易时收到的评价5 l7 L1 r* s( J- V, }) I
appraise-time5 m( E5 o! Y# F' t
;;
当前发生交易时的评价时间
( ?4 a: y, s7 e9 T" v" W: Zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉& B0 N3 h) y: i4 @- }4 R
trade-times-total* R" K' ]- k4 K2 ~5 m8 A. O; h
;;
与当前turtle的交易总次数% a8 B8 v. o7 j2 D! t0 M  @! I$ s3 s3 Y
trade-money-total4 D* S* f( D2 n1 y0 A& \
;;
与当前turtle的交易总金额- y4 M/ b# X' B* o0 \
local-reputation2 D( ^5 a# |: m6 W2 H5 Y3 Q
global-reputation
6 t% n- W6 e1 Ncredibility/ ]) m# f9 g8 R; M- P
;;
评价可信度,每次交易后都需要更新
! s7 ~, }0 D5 C4 c  t/ j. Hcredibility-all- j$ e9 A. s) b' t4 S' T
;;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
, ^) M8 X9 \" I  L3 B% |- Q+ c2 Q& M- S  O& @( y1 {) U4 J5 y
;;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0.59 K! e! e1 W5 _/ h6 v. N
credibility-one
7 A, c6 C- `0 Z0 I; s+ q! 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
2 I7 d; R; G& G3 o" kglobal-proportion
2 A7 i4 Q' u7 z5 E# Lcustomer
. v# {- i7 M( U" v/ v6 ?7 [customer-no+ L1 Q& B. d7 x' }0 y' U$ T  w0 y; Z
trust-ok
5 a! f: F4 j% S5 R1 Ltrade-record-one-len;;trade-record-one的长度$ |  G0 T/ `( v" o- ^+ T5 W
]
0 g! A1 v; R6 k, u
& j7 d8 ]  r2 x2 M$ d8 y% d4 |, y;;setup procedure
/ l4 q! n9 |/ X
& `6 s# ^; g0 h/ i. [6 N& ^+ U. |to setup
: h) u4 o- R  e4 V, S, F7 D: t& c2 h& @$ D( N6 @5 g( @
ca
, ~3 x, z+ J& a+ x% t  E
; e# J' V$ v8 B
initialize-settings

3 ?4 U: ^1 h  O& }9 y7 Q
6 [: P: o3 t. T; Icrt people [setup-turtles]

. u( x  i0 P" Z0 }! e/ X8 }2 Q/ J% _) g$ ~- q( L" k& g
reset-timer

. d( ^# [+ _7 M& @7 m' u! [
% K0 [+ n  e3 T2 _3 }! f4 ^% Lpoll-class

, a" X- y  {5 O2 Y
: J; _* `) q( G  ?setup-plots

6 l- c- k! c, t# O  N3 V/ X/ w4 \2 a4 B8 D
do-plots
5 A6 L& v5 @- h7 a
end7 |0 w0 l& m6 F3 l+ z

' e" |: r8 [* l  jto initialize-settings& ^; e0 Z9 O. R  r* y
9 m( m4 s7 R3 N/ i" ^
set global-reputation-list []

% N4 o& b5 ?" k
/ T" v* I0 A! M/ p) L4 Bset credibility-list n-values people [0.5]

% N5 a4 A$ [4 T$ u: j
" V. V( |" L5 s) Xset honest-service 0

! O# q1 B% J+ R9 `/ c
% D: Z, o; ]% K4 ^" fset unhonest-service 0
9 E  J& `" H0 B3 n! l1 \# W: M8 P: u
$ V. l5 J* y& |" a, G( N. y" N1 I
set oscillation 0
( ~# s9 i- Z9 D! V" @, G2 U
/ v7 o2 f! B) V% }  N" A" X
set rand-dynamic 0
" H8 H. v# P! X- [9 g" z1 [0 t
end
: J/ \3 m0 x& @  h. g& R! Z4 @- \, w" b; i5 K3 P
to setup-turtles
- Z+ I5 t) z7 S& ]9 nset shape "person"
7 }5 _& D# [) m" Hsetxy random-xcor random-ycor
" c7 P8 }, l  V! b; ?set trade-record-one []
5 r# w! m+ R9 {% s

' P. d( f5 \' Q6 Q! h. Yset trade-record-all n-values people [(list (? + 1) 0 0)] ; E7 M* k0 b! K2 j' g7 A

  A/ z  K) z( |9 zset trade-record-current []9 }* R- o: }, o3 k0 t- ]
set credibility-receive []
- W" T) O7 t# @) W) l/ |set local-reputation 0.5
# v3 Y4 s- w1 R) uset neighbor-total 08 Z6 w( `( G4 G7 y9 |, K8 @
set trade-times-total 0
& R, Z6 `7 l& F, j/ Nset trade-money-total 0
, g& R4 J9 j5 ], R5 ?/ D: i7 s) x! h  nset customer nobody
7 Y- Y8 i+ @% C( ?) F) Iset credibility-all n-values people [creat-credibility]6 c2 P% T7 N# b& h8 E9 D1 H1 k
set credibility n-values people [-1]5 r  r) Z7 X, _
get-color
& [6 o0 u& V; D7 u2 s

( ~8 g  t; A4 e7 m9 gend
1 U$ I1 z% u! P, G7 B. e6 W  m+ b
, S- h' \) d. W. w: j8 q: kto-report creat-credibility
5 X! [) l& d8 [8 j- y3 P2 V) qreport n-values people [0.5]
  l, l( B- D, T( O8 }' s+ aend7 K+ Y: o& `0 ?8 a4 X( G5 i
8 N5 S' }6 |% L3 _8 W: O
to setup-plots
& W- @- D$ i- U4 v* a( R0 P
. f) ]' H% R8 G, b. U7 i5 xset xmax 30
# E: O5 p9 f) j* x& ]" `( X

: _9 R$ y1 m! }) c5 Q" ~set ymax 1.0

; M) V3 d8 _. X! A, _) d* F# A1 Y" Z
clear-all-plots
8 F4 [, z$ L! Q/ ]

  p: s% a: S$ ~& ~  ]$ `setup-plot1
/ k. U% ?" \9 G! m
4 O2 X2 ^7 K/ W- k6 C- d
setup-plot2

5 _' x) }* t8 C% V7 D/ F' N; i7 f# ~4 k7 g
setup-plot3

7 W4 r' K% b& \" Wend2 F3 f, {8 ]( T4 M; k- p, `1 ~

$ E. p  q; |9 S;;run time procedures
6 ?/ J- ^# D. X  K# [  x% }% D3 Z$ N3 \' g! A
to go
$ J4 h+ o  Y4 S. e! x7 H7 d6 ^6 E: c6 g6 E
ask turtles [do-business]
/ w1 B- R$ ?) v8 M6 [) B
end6 [4 R, c8 X* i, Z  O1 s, Z

* ~5 P, U2 B) Z, Z8 |  A( ?: pto do-business ; \, u; M3 {# L3 I

+ w' h6 e8 y+ z4 C
- U! `" r7 l# Z8 I' Brt random 360
. O' Z8 q; }3 ]; k
: y( u2 i5 {: |; g1 m2 [
fd 1

! Q& b- t; q$ V) W- e% c/ ~, g6 l! f; s  E0 s/ z
ifelse(other turtles-here != nobody)[
9 m  V9 i# E7 c1 e

8 |  |" K: l0 f& ~* D' W. i6 Oset customer one-of other turtles-here

# `4 q; E/ S. ]( G; a8 W5 Y; I% {$ s5 e7 c' f# \9 t; n9 _0 [! p# G) J
;; set [customer] of customer myself

& x+ ^% S+ h5 K, @) M
) y8 B5 B" `& ]) P0 [: fset [trade-record-one] of self item (([who] of customer) - 1)
3 u/ M2 o6 X  ^; k[trade-record-all]of self/ Y+ z, K+ r# ?+ A7 O
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 f/ s6 K- c3 }1 ^' X, m6 j
7 A4 Z( p  c  S: ~# p* N, y% ~
set [trade-record-one] of customer item (([who] of self) - 1)7 V" i/ |1 o6 d' p: F5 d
[trade-record-all]of customer
: F% ^* x( W" p- y$ U( M& W
5 F2 C6 d3 ^* g: m0 c- K5 k
set [trade-record-one-len] of self length [trade-record-one] of self

+ L+ v% O5 ~" s8 Z# B0 j* ^7 J4 O% u' E/ t& G! k4 I- j
set trade-record-current( list (timer) (random money-upper-limit))
3 Q0 ~$ M6 S( @4 q; ?
7 f9 U4 X% X0 B; d: R) T/ T
ask self [do-trust]
" x. a6 I, b& S6 p;;
先求ij的信任度2 `7 c% `" H, m' P4 J

$ H8 k. c* f! k: bif ([trust-ok] of self)5 T# f% H7 k1 V7 Z) Y' Y
;;
根据ij的信任度来决定是否与j进行交易[
. x( w% e, t* f- N' D, e, q' Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 U: o. {0 N" u3 [

' S/ A5 X9 T- h9 q+ C* l[
3 p" y" M% P% d) E& q) p3 y

( R/ r3 B8 o7 Y; h) i" T6 D' f0 F7 \do-trade

9 w" O% B+ H' M; _8 l; d/ |- u5 |1 N2 I. [  u
update-credibility-ijl

1 R! A" [: p. Z. g- U, J; l! }/ _5 _5 B5 m( t* S; @/ g
update-credibility-list
( N5 t2 \+ L" f5 v1 E* {: ~

$ `7 `, @2 G( P$ c, X
: M0 j8 R# c% k' a, [update-global-reputation-list

) `* N  k1 G1 h, o: g3 u- u& Z3 d4 @
poll-class

* T: u  r9 v. u! W3 v8 \
& N' i% ?( O7 H; m/ vget-color

" V& `. e* r) {1 o& K4 x, U9 c* X9 [7 D. l0 i
]]2 \; c/ h, \% y

. O% U  Q) v4 _( K  `+ j6 {;;
如果所得的信任度满足条件,则进行交易
9 M5 v% B: T9 H% u2 e7 z$ S. ]1 t7 c- z3 Y
[
5 K! T* d/ N$ l+ v. a
2 I1 q* r$ l+ v% F
rt random 360

$ Y. H, w, U( M9 v( y) s' `' x8 M: P7 N  c7 x* }
fd 1

6 x/ P( S) d+ c8 H) D  u4 {
) X' ]8 l4 s3 Q( V' o; y]
- J. s9 c! |0 r6 Y; D2 Q2 D

1 M, B% o$ t- [. k  eend

6 ], m# ?$ m/ L4 o0 P
5 r& w8 x' u/ t8 F' nto do-trust ; C% P+ D  S3 L1 m
set trust-ok False1 [# j5 A0 d8 n

" R% X& s/ r; Z' d8 Q4 E

% a: L3 e  S8 `let max-trade-times 0' ^% w. ]) Z& t) @% D% N  z9 T
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( k- k  L" e! c+ tlet max-trade-money 0: {9 L4 n# M/ I3 j" F
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 {$ |: `1 M9 @
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 D( U6 b$ \9 x7 \

+ c' Y* g- I8 g# V0 v6 j
8 h$ r+ B7 A" u. C! K' h
get-global-proportion
- W, H  V4 l; }* \let trust-value. Q7 F% {/ i! |2 D8 ?
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)
- I, h, s* J  G4 O+ e
if(trust-value > trade-trust-value)3 \) S# Z1 q# ~
[set trust-ok true]1 W% i' \2 A  Y* |2 K/ g( W
end4 W/ e$ m3 L, H7 D( l0 s$ D

% F, L2 ]* G1 jto get-global-proportion) b  d# q2 A9 I3 c# g$ a0 a. q3 n
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ g! [! M- j! J; a
[set global-proportion 0]
8 ~" B" X3 F: D' d[let i 0
3 B8 ~( {8 `' wlet sum-money 06 A! g# s, b4 {; f1 I2 D9 F4 f! @2 U
while[ i < people]/ \( `5 ?% _4 I! ~  O
[" g; P( n* N0 P  D- d
if( length (item i
: s3 K0 ~- ?) H9 g( Q3 @) T; z' ?; k[trade-record-all] of customer) > 3 )
' Z3 V6 \8 x5 q- |0 I1 `
[6 U% _6 ?6 ~$ Z6 t  [( S9 I. K6 n
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))' I: P' _4 L- O, M
]1 Z2 \0 }; _4 H$ `* `
]
: d$ B% |  {3 F$ N8 D! Vlet j 00 e8 S+ V# @3 m; w# M5 r* K
let note 0
) A& x: j3 ^  ?0 b% T: ?' [% Twhile[ j < people]
1 w: f2 A1 ?* @6 C) N6 t[, O: a2 }& W6 m! v
if( length (item i
% y" L5 |8 A. R* C. u[trade-record-all] of customer) > 3 )
0 a' X! W, V( a1 k1 T4 t! R) m* k5 m
[: X* Q" P# F4 k! g4 M# T
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 s" Y/ k9 D! a" r0 B! S
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# |' H" v! D3 `
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& O* n3 T, F# y7 l1 G; v, M]/ u' l- j! b" _* |6 \5 A3 L) z  V0 t
]
: B: A& W% y% [2 m8 P- b- lset global-proportion note& m7 f: q; |, t- o& u( x
]
1 t# f7 P0 Z, u4 Y7 Z( nend
% v7 n+ a  y3 F8 `3 t, E; v4 \9 x/ E7 s  ?" P* U
to do-trade
! o. m8 Q1 B0 V& ?) \) z9 Z; ?  l. \;;
这个过程实际上是给双方作出评价的过程9 X  L% \1 R2 O3 B8 R* ^/ X9 @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  E5 y* A% _, _. q6 u0 ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 ?1 ~7 ]4 u% U0 Z3 jset trade-record-current lput(timer) trade-record-current) M" y% O% y. P. T
;;
评价时间
5 l. [$ M7 v" U$ L  q. cask myself [
- C- [8 _- j, S; {# Jupdate-local-reputation* n  |2 V, ~. Q. l8 X; v6 z
set trade-record-current lput([local-reputation] of myself) trade-record-current
+ g; q/ S2 l3 Q" H- o. ?6 b]
6 W& Q& H& E, Rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; {  L6 W. M$ l
;;
将此次交易的记录加入到trade-record-one
8 u+ U5 h( l4 F0 Z. H1 hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 a1 A+ i4 x* G6 u2 u. V1 y% X* ?let note (item 2 trade-record-current )
, y6 I2 l; m1 wset trade-record-current  @5 n6 v( N7 I  u
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 k7 H9 o$ Q* ~. nset trade-record-current& f% e& F8 }) C! w) J6 Y
(replace-item 3 trade-record-current note)
- T1 |3 p0 ?2 E$ ^
3 B; e- E  U5 t$ b# m1 d

" R- y1 g) E. r4 j3 U. p+ J; @7 \ask customer [
" ?0 O0 A# q6 M' U* L$ G; qupdate-local-reputation
( q# Z: @9 o% aset trade-record-current
3 N# O( Y4 _. w. q  l) r8 g" i(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" Y: R6 p9 q/ r- i. c+ |]7 U  ]6 g+ z6 V& }; S5 h) O8 H0 E

, R. \: K( N/ \+ E$ j5 J
( |; j4 f  W- x( z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# L( Z& D8 ]5 Q, E: D5 q! C  X

7 Q/ U; W9 r' x5 iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- [$ B+ V" ]/ G5 j$ m3 t;;
将此次交易的记录加入到customertrade-record-all
8 Z# C( k6 E- {: C* S& Iend, C9 Y" X, i# S% q4 X$ [2 p
* i5 A+ b/ `# K$ L  d! G
to update-local-reputation
1 a4 n# g3 p% F4 g" Wset [trade-record-one-len] of myself length [trade-record-one] of myself3 G0 f, l# c( r# ]

# H1 M8 H+ k' Z- N) p
0 a% x+ I6 N+ P+ F/ m;;if [trade-record-one-len] of myself > 3

0 P% X3 c) N; o0 j+ g3 W1 d; e4 I- x7 pupdate-neighbor-total
1 T/ M8 ?" f' L8 T;;
更新邻居节点的数目,在此进行' ?. H! \0 X" R' O* D
let i 3
2 ~  p4 w& U, ^' H- _let sum-time 03 k& r! W# ^5 u) S3 m4 E3 w
while[i < [trade-record-one-len] of myself]% U  m; Y# M9 w( z0 l
[7 F/ {9 }% h4 `- S
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ s' j7 S- a5 l" E# N- Yset i% m) t/ o8 x% R4 u% k
( i + 1)
( |* C: Y9 z5 |, F2 a
]
% ^. C2 c( {  nlet j 3
5 m1 \# i8 V/ d( j3 Mlet sum-money 0
, H7 M0 X8 E+ X4 q1 @9 |while[j < [trade-record-one-len] of myself]
- G0 Z* \9 U8 U[
6 I% A# z( I8 n: P7 I9 q' L2 Rset 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 }1 v2 K% V& @' A) C
set j" o- ?& M! ^" o9 R4 k
( j + 1)
, g' H2 T+ l; q
]3 R1 H- X8 T! ~2 H8 ~. F
let k 31 [2 T1 k7 n) h% ~
let power 0
5 E% n4 I8 Q# g) Z/ Z- J) klet local 0
4 C. L/ a& Y' `) y2 }# nwhile [k <[trade-record-one-len] of myself]3 i" A% f3 y0 t8 v6 u  \7 c! }
[5 o8 d$ m3 Z8 @" }, \
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)
. a" [5 ]6 \7 _6 fset k (k + 1)$ {% p! g% I( L- X7 w9 r
]
/ {* t7 }: p: t$ K* xset [local-reputation] of myself (local)
6 O$ ?8 p+ \! R/ h! f% ], `/ Q7 t, Wend( X& T8 h9 Z0 |+ u

/ \0 e1 i* m: d( c5 r7 y1 @to update-neighbor-total
1 M1 z- h% D3 R4 e  L) w! o6 ^& v4 c- c# B
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. E6 W( ?/ H% h3 |( w. F6 P8 B9 ]# P4 z; S) l4 N+ F5 j

( g. V7 F" h! _. E1 f- _% }) oend$ O) l1 S" U, G3 D6 O+ n2 w

9 h) I9 ?: {  H- {$ Q% Mto update-credibility-ijl 9 P  E# W1 k3 l6 Y# y( z

1 i. c( ^1 o" Q$ @;;
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。( Z$ ~; b3 [! e7 A8 g  ~# V
let l 02 T3 z9 s2 G3 b
while[ l < people ]+ Q; j: n2 }- p, I
;;
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' @: i- s% e, U" Z: F4 W) k[
! F- p. M; H& Nlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; D, Z5 l5 X( [5 _) tif (trade-record-one-j-l-len > 3)+ S% l- S8 c/ d" b1 `
[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
( k1 x/ P2 t0 i0 @) qlet i 3
) R7 q' u0 U0 q6 I5 Alet sum-time 04 }$ @& s" q" J- N3 A$ Y4 R4 ~$ E+ t5 n0 S
while[i < trade-record-one-len]
2 g6 d) L4 @) x1 |[7 F0 i. v+ W1 z% w1 N7 }% c" A7 b
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 `* l) Q5 B) b2 o3 wset i. e$ w' y( B" i, [" I4 S
( i + 1)

9 J% M, B6 c  w9 u. ?8 E) ?- I]
- A1 ^$ k! u# ~; ?" C2 T: xlet credibility-i-j-l 07 n/ }6 U2 T& p& L1 j
;;i
评价(jjl的评价)8 d/ _1 E! S8 ?
let j 3' O9 _5 F$ C( A: B+ l
let k 4
- t8 _$ `5 a' r8 E' M8 z, i! xwhile[j < trade-record-one-len]0 T7 _8 ?' X# V! q
[
) `& T3 l! H/ i' jwhile [((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 p: I! Q7 v: c' l. I
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)9 n& r- H& Z3 \$ ?& q$ H
set j
( J5 {0 R% p0 }( j + 1)
* D! J5 z+ L0 \- A& B- I4 \0 C
]$ X# `/ b7 X2 N# W( l! R
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 ))
# M( L/ G" S" J3 ?; M( \2 A4 q% g- U- I1 E
3 A  `2 h/ t/ G" O
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* _  H& ]0 ]. ^7 @
;;
及时更新il的评价质量的评价
/ T1 u. T$ A4 ?set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 n7 t4 i& h" v. `1 k' |
set l (l + 1)6 r. k. n2 R/ @+ K, b
]" |- v' g5 W3 c3 n, G0 U+ u1 |) [
end
" |% H- {5 S# c' E0 i7 P$ b, v+ v" M2 m& N  n0 O& e4 {; ]+ l
to update-credibility-list
/ n. |1 K  y) W8 S; hlet i 0
/ A7 w0 l5 Y% b3 {3 g' \+ {5 Twhile[i < people]& V$ l/ q" }! Y7 t. j
[
- Q0 M$ c8 s' A0 z9 d. E1 nlet j 0- {( a7 t( [1 p9 Z
let note 0" B4 i- K8 b# u; w
let k 0
: }( G6 b- {8 ^  V9 }9 N6 F;;
计作出过评价的邻居节点的数目
- |9 |6 J+ s5 R, W4 Z8 xwhile[j < people]" R% W8 E3 A; L& F
[* l6 K7 ?6 T- c4 [7 {
if (item j( [credibility] of turtle (i + 1)) != -1)
% @+ n. p, O0 N;;
判断是否给本turtle的评价质量做出过评价的节点
# b. W% K4 B4 G[set note (note + item j ([credibility]of turtle (i + 1)))+ f' x; Y& L  s2 u3 m+ v, R$ _' A
;;*(exp (-(people - 2)))/(people - 2))]
9 [! p9 w1 V4 w  p
set k (k + 1)& |3 m, l' ^+ [' Y) V  k1 F
]0 F+ l& \/ @& r- j4 g5 Q$ x
set j (j + 1)  ~; ]. p2 D, o, e# s
]( ^6 G1 ?5 ^1 ~0 J- [
set note (note *(exp (- (1 / k)))/ k)7 U4 O) J$ t( o2 L( V  `
set credibility-list (replace-item i credibility-list note)( G1 t; g3 d; {$ z. _
set i (i + 1). z: t9 E# O$ U: S: Z- i3 u% z
]) }  ]+ r, l; ]
end' A, l6 H. l1 r9 j% S
" d+ U# e, b1 O: j
to update-global-reputation-list
$ I/ r4 C6 V, m: ]3 c/ [# K* Ilet j 0( ]9 r9 l) T/ v# d) \& N( _( [
while[j < people]% N' g2 i6 j* T4 |
[2 O) ^6 q" e+ G) ^* `4 a& h: u
let new 0, g0 y$ o, B$ z/ G% c
;;
暂存新的一个全局声誉
( b+ \) t$ k& {- S6 N* g' a3 ?! slet i 0
% ~$ {5 ~5 F) S4 _% rlet sum-money 0: p3 ?; o7 z/ x& s( Z
let credibility-money 0* g# q' S1 F4 t% ?9 L2 I
while [i < people]
* p0 x6 Q8 V- z: B! v2 c  K[- l% P+ X* ~+ w- Y( P: f
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. k( v, A0 |$ Xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ \( K( r! D% u8 ?$ A0 p( J' Vset i (i + 1)
6 D  l6 z, G, J- K]
% l+ }: p% M8 y8 J# A" e) r) Dlet k 07 F6 K: _6 w. Y) G" ~$ I
let new1 0
: `0 W' o2 h% {% U. `% Z+ Lwhile [k < people]) X+ v6 N5 _! ~: B
[( ]. f7 `0 O- Z$ M9 Y
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): a+ F' b; Q; W5 D
set k (k + 1)
. I, }7 O" L+ W]0 Y$ e0 j. m4 P  l
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! q1 V( A) n: t# d' ~
set global-reputation-list (replace-item j global-reputation-list new)6 a; p8 R% {& Y4 z9 Q: J0 Q
set j (j + 1)
) M2 n4 I6 u/ X' _+ B. B6 L, B/ l]
1 g+ ^) o- \4 S: ]4 D) V1 send
/ _6 j; g+ P6 B, O. u1 S' U9 @8 L$ }5 `5 H
- p3 }* M% `& ?: {1 d
* ?( D& b2 t5 O% y; w, C
to get-color9 }+ X4 g8 I  {# v8 O) I* {% q7 m+ H

" i: ^  O* P8 `' Yset color blue
3 b. [5 ]' m* A0 S1 A$ x
end2 y. k) B, S! o6 x# \% S7 N
/ ^0 M0 ]2 _* d: f
to poll-class
+ l* }- i! C, O% qend
1 o' i2 C- S8 {% p. a8 c7 j
# S7 {6 m' M$ ^to setup-plot1
* ?& Y9 G$ N; b, |/ b: p/ q" ~5 l. u0 p9 k* _
set-current-plot "Trends-of-Local-reputation"

% C; C# }# O: a$ D5 v' I$ j% ^' `; O( r& G4 E& N: [; e, v+ H
set-plot-x-range 0 xmax

+ ]: w+ ?7 [7 _. a" Q, a2 M- V8 |2 l! {  P: g. n7 Q
set-plot-y-range 0.0 ymax

* f/ l" P$ n2 E9 M3 t! Eend
/ q/ ?$ h& o& ~# [. h+ H' ?1 ]' a: V
to setup-plot22 W4 X: C$ Y' e& ~" j) n
9 E  p/ w0 ]* y% ^5 |
set-current-plot "Trends-of-global-reputation"

9 M  x* x$ j7 y' x! M
2 j0 s* f/ x: g0 J: R. P4 Lset-plot-x-range 0 xmax
2 q- Z5 o3 x! H8 x9 a3 S1 m
: G( N, R6 P: L: ]% _: X
set-plot-y-range 0.0 ymax
' Y; b& ~" k1 D% e0 i: F
end/ H" B. m! Q$ m# v6 J" H5 Q7 ~. F/ }3 J
8 ~3 k5 Y0 E, S8 {# u/ ]1 v
to setup-plot3, H6 H# p! A6 F3 I# ^
0 }& |: o+ n7 c3 o2 y) w
set-current-plot "Trends-of-credibility"
$ e" L. V! n& m5 B  h
1 c- r9 f( B. A2 a, g  n
set-plot-x-range 0 xmax

' b' g# w* Q" }7 f
  a* L* ~5 j  U- f6 Q3 }2 @1 bset-plot-y-range 0.0 ymax

, m# k( G+ X9 c! G- f' v1 C. Y+ eend
' S0 ~! e" P3 E' x. `8 w5 o  K& f( f" p+ c, j! h, {
to do-plots
% m# `9 ^3 {. m& {set-current-plot "Trends-of-Local-reputation"
- s; |' M( D1 T+ J! y+ P0 L7 y6 Cset-current-plot-pen "Honest service". s% V0 h( v  o- e3 H
end
* f$ u0 L; p, Y+ v# f1 b
8 g5 k7 X' E  p  E7 H, M[ 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 Q" ~4 X5 A, u. H# y* U. u" ^/ x1 j+ E, U$ e: }
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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