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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:
' P5 b' p! [& Nto do-business
5 ~) C- t& l7 |4 u4 j0 K rt random 360
6 z) X3 C6 F' Y fd 1  C3 q) w+ C' B8 a2 G/ G
ifelse(other turtles-here != nobody)[
3 r) i) x1 T0 z7 p+ U2 z0 I; P! C   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.
! m8 R" x& k( T$ T0 w2 ?' E3 h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & B! Y1 X: N1 H9 m
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) i6 h6 _+ J: C5 u% M7 e) U   set [trade-record-one-len] of self length [trade-record-one] of self7 m% O$ X6 C5 a- K9 L
   set trade-record-current( list (timer) (random money-upper-limit))) M& b* r  y& e  S3 ~6 q( \

8 E! A' D8 a3 T- _- l. M问题的提示如下:
6 w2 b+ L8 o! k
3 |/ K$ q; Y6 ~7 P) Serror while turtle 50 running OF in procedure DO-BUSINESS! ?/ T% U0 t) @+ b' t
  called by procedure GO
4 J6 ]7 a! g  T9 S3 xOF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 m0 K  Y) c/ l2 ]* E  M& c" z" Y
(halted running of go)+ x; V: a  d0 D; ]% Y6 y" \) i, ]

  G2 a+ r$ |7 f( z! e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~~( r4 A! u( l# g8 O/ I4 N& _( F6 v
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( C& I1 t" v: T5 ^5 @- k
globals[
6 ]- N+ v+ H4 r( r, R, @4 _4 [xmax2 X2 s$ a) |. e$ ^
ymax9 ]4 P  W: C( R$ b9 K
global-reputation-list
8 }! @8 W( n8 l: k4 c9 f
0 g/ y+ I6 i# W; a* A; I;;
每一个turtle的全局声誉都存在此LIST
8 g4 K) k. ~  S( h- x+ W7 V5 M. [credibility-list
' A% e9 A7 W7 s. i;;
每一个turtle的评价可信度
: j; j! q0 C+ Q& x1 V6 \4 @honest-service: x- z/ J6 g, ^- f* \) u
unhonest-service+ {) R2 j  T2 x0 i  y
oscillation' P6 u4 T! f) h7 j4 }; s
rand-dynamic
2 t" U! [/ ?! A1 y% ^8 e3 \8 h]. R) Y! [% S+ @; z. h; r+ @

& B) R5 b5 |$ E! m5 }turtles-own[
2 x, Q  U1 y& f7 g8 M9 V8 ctrade-record-all) b- Q8 {' `' U. n8 d8 Z7 X
;;a list of lists,
trade-record-one组成7 \  B+ S# u1 q5 X+ x* e" v$ u7 a
trade-record-one5 u. Q' t" v) w# j) Z& G/ a
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 R) E! G7 Z: _1 }0 L8 D

7 Z5 U  T% _7 k5 G& f;;[
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]]
/ |% B* y+ Z3 @/ @( h& Itrade-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 M3 U/ e, i$ Q3 Y* v' f1 F- ^& t
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# b% Q4 `4 r  y2 f
neighbor-total
; G/ E) a) v% o7 R/ _+ F;;
记录该turtle的邻居节点的数目
6 P- m, w0 [3 R$ l4 f7 A+ htrade-time
7 c/ g, h2 B% A' m) d& V' V2 Q+ e;;
当前发生交易的turtle的交易时间
+ X* P, r5 A0 V- Qappraise-give  [! J* q  w/ Z! X+ q$ F
;;
当前发生交易时给出的评价! T- I  T* o3 m. u( ^
appraise-receive
  [( u* t4 P1 b  {& Z4 Y;;
当前发生交易时收到的评价, a! @: O! T* D$ i2 v" l7 ], P; s
appraise-time
# B7 V7 J+ g% R; M1 H' |;;
当前发生交易时的评价时间/ @2 m: B; |5 U, q6 b# L
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- ?* P! J) f3 `+ D$ Vtrade-times-total  b2 R& d; Q4 N
;;
与当前turtle的交易总次数
& i5 s' [2 A$ F0 J/ V# f% atrade-money-total
& o1 V1 L; H6 O9 z' A8 K& p;;
与当前turtle的交易总金额
5 r+ g. N' C# [2 I( X; |local-reputation
$ ~/ w" l/ I; W+ U" I$ \6 ?$ X) iglobal-reputation
% O2 H, f* H# H9 z" K! Mcredibility% @8 I" Z) T" w% K  h: @
;;
评价可信度,每次交易后都需要更新
; F9 t) W7 D" ?! Pcredibility-all
: g. F  \* I) D" F0 N5 ?;;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
' t) X& @2 T! m: Q. M% {) b, D* |% Q. b- T7 N
;;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0.52 _: h4 J) z( J
credibility-one9 r% g! `5 l" J3 `1 q5 u7 J
;;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
& f- o4 x: q, ^* _0 _) zglobal-proportion
: V/ p( F' U" R* Dcustomer
/ ~3 L  F4 v/ w/ q% N+ A( fcustomer-no
9 S! {# |+ B0 utrust-ok
9 R& o& r$ ^  a, u8 M6 D2 _; y& xtrade-record-one-len;;trade-record-one的长度
9 A2 P& G( p0 p; U: l]% l4 U( `4 G. W# x
+ X' }" R' }, T. y. K
;;setup procedure0 t, K' O3 A8 l4 ~! _

8 Z: x( }; k5 l. Vto setup% p) D( ]5 y" B! e: y% D/ X6 a9 e) l

" ]/ Q; y& ]- r& [ca

9 ^! Q0 d; @; w7 a3 ?! I4 `4 l1 f( @
initialize-settings

% {% L0 V" j* f+ ]3 Z' f- t" N
; N* r7 a0 ]0 mcrt people [setup-turtles]
6 o1 G/ I/ u7 x( w3 l: N

4 p; A8 ~+ l* {$ O, Oreset-timer

( h0 a8 p4 C% r: o( F+ n# d" h6 h" l
poll-class

. @8 m1 r  B* C4 b  |! p- ^3 U$ k3 X$ ?/ K; `# ?
setup-plots

0 t: D6 ]$ Z! Q
& }, c3 [& I3 T8 t3 Q- t& ]do-plots

1 @1 l# Q) b; [6 xend* M& i; K; ]- J3 x

6 m. i6 G9 D. t4 A* C" w8 h2 Cto initialize-settings
" d$ N& z, h3 y: l) w4 P9 v, X
- N+ A5 [4 p" G& y* y9 V" I# j; oset global-reputation-list []

' `' [5 U% }7 ]; X
- n. g0 Q6 M0 g( `% Iset credibility-list n-values people [0.5]
, }! `; P6 j2 K: ~3 z4 \3 b

$ C* z- B6 o9 w( j$ v3 D% Wset honest-service 0
! a# J5 d& P! @  |6 O8 l
; d7 u  u+ O# A% F! J  J
set unhonest-service 0
: \* U7 i5 d; l9 ]% U

2 h& _/ D" K- w, X  {  I& H2 Yset oscillation 0
$ |3 F. O: ~( V( i: I
0 [" J! z2 U  H+ c6 ~( }
set rand-dynamic 0
: d+ i  h* t/ D- ~4 [5 z4 B
end
. E" e) Q- j% _2 }3 j3 E1 ?' a! i) ?1 k+ g: m% k
to setup-turtles 8 G7 k5 I8 q- F6 R
set shape "person"0 b% c9 G8 x) H/ d. U
setxy random-xcor random-ycor) c8 a# p! L! X8 Z
set trade-record-one []8 z9 l) w4 K! I6 a- X9 o: P: `$ N7 b

6 J. p  ?7 _. N. Uset trade-record-all n-values people [(list (? + 1) 0 0)]
3 x- b# O4 T9 @
0 R. e7 L& \5 y0 n# F  ]
set trade-record-current []( u) W, j$ ~8 O
set credibility-receive []
7 k, w* j1 |0 Y, Gset local-reputation 0.5
/ _! p' q. }& s3 Lset neighbor-total 0
0 H% p- ^. c* ~5 [: w3 Fset trade-times-total 0
# o. X+ d/ a: Q6 L# |set trade-money-total 0) k6 x; r2 |7 v' M: r6 m
set customer nobody9 S- [4 |# W. Q3 r
set credibility-all n-values people [creat-credibility], S: u2 x3 I2 p* N9 u
set credibility n-values people [-1]
- F- a& u' x; I$ ~: ~0 Uget-color7 h% m, |  c# I- X( l' b
9 x2 K" G) |) E: b" [
end1 H; K+ \' c4 B6 [; D5 z

% @* O9 n0 P1 {: u( o( gto-report creat-credibility; {2 k3 a$ [2 f) `9 @; |8 @
report n-values people [0.5]
' B; a6 ]/ x& `4 V  Fend) E# s/ N; ~' Y3 z( u" Z' }/ Z
, e' v: u9 `0 Z5 r* x3 ^0 e7 ]- ]
to setup-plots
: G" C' E8 q- h+ @3 F4 K. c" n
+ D2 H8 u' T5 P  vset xmax 30
$ |2 \& ?& L  G9 c
& X! l+ W0 T! j; h, D' ^
set ymax 1.0

3 z3 e$ h6 p5 ?- P' X$ k0 A7 @+ ]8 b: |+ o/ V
clear-all-plots

$ q1 {; r$ B. `+ v, G% L' L3 a$ [, M+ f  F% D: Y
setup-plot1

# @: H, j' y1 k+ l) X5 Q
. k, e% k! o. d5 N1 q8 Msetup-plot2
' }5 |& I9 q$ W) n
& d4 c3 L5 R2 F# d- N
setup-plot3
* v) K8 `: H# M, [- D
end
2 I5 v8 b" R; q* H9 |; J$ j9 P$ b/ p- [# u. R
;;run time procedures
6 ]1 _* m( s# ^. I' v
8 b* g5 E& Y1 {4 t. x; n( |8 s" @; bto go
* i: o/ Y3 b6 Q+ I! ]; d( }7 ~. H0 C% |0 {% T. W& o5 l" Y
ask turtles [do-business]
3 J. @/ k; I2 @% j: ~1 m
end
! T* y! _( A/ o% I! f! F4 o" B. A
( T6 a4 w: T$ O3 {7 k& Mto do-business 8 p( m6 C0 J( q6 n1 x

0 G" p0 K. K. N- j) h* |
) x! \2 b8 Q8 O; P/ q" R' mrt random 360
: i* O( G: ?( B4 y! d  D5 @
9 b7 @" L0 t& @- Z
fd 1

% L! X3 u: e- A: q- T1 N7 n5 i$ i! L7 c# G1 f$ B! s
ifelse(other turtles-here != nobody)[

; ]4 ~' U; M0 i) a; u* f7 {' }# z% W+ w& [
set customer one-of other turtles-here
4 H  P: J9 V+ ~% @  v; W: I/ u2 `0 g
+ W- H; c6 v+ p5 A1 z
;; set [customer] of customer myself

6 C+ S% s- K# M& J! C6 T3 A+ J8 c( E7 H6 ^- o1 d& _: N+ e; r( h
set [trade-record-one] of self item (([who] of customer) - 1)
3 h% q8 H. e# m' V; R  {( w[trade-record-all]of self
4 {8 ]' D4 @( j/ G& G" E;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 R7 I% G8 l- }: j' E8 r9 `5 Y' `$ o
set [trade-record-one] of customer item (([who] of self) - 1)
2 t/ f" V4 K, f9 @# l[trade-record-all]of customer

* r) T- i1 v! {: R
5 L1 G4 i2 O% }set [trade-record-one-len] of self length [trade-record-one] of self

! G1 u* p7 y, g- x$ n3 j
& Z7 l! Z" T/ Xset trade-record-current( list (timer) (random money-upper-limit))

+ E3 x1 K  s( I6 C- W$ m/ @- P/ K/ O* d, x) ~! Q. C
ask self [do-trust]
$ p, q. @2 x/ y7 c! l' A;;
先求ij的信任度8 ^" Q, ?9 _+ [# d0 G' A: m; ~

3 M3 I0 X1 X2 N: q# y2 Bif ([trust-ok] of self)
) o/ ?; g8 T( C; L% a. E5 V$ b;;
根据ij的信任度来决定是否与j进行交易[
7 e1 A- d; M/ }* B( ]ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# D1 F: ^! D* Q6 i$ |! T" y6 X* r) t! o8 B6 r; I
[

# A. M: F# s. F. z3 l- F  r4 Q; H0 y
do-trade
" m! i- ]5 O) @9 O7 M3 k

0 t; ]* J+ M; ]' d/ Tupdate-credibility-ijl

" V$ X* i1 a4 F+ c! }; e7 Y. |, E
1 D0 k. l5 T# V' x  M9 m( A1 {" p: Wupdate-credibility-list5 p3 E- q3 R& T8 V4 y7 t% b7 ?
6 x7 |2 A$ B; O9 T. L, W2 X) v

  ~. {* `6 S" b) ?/ ]. f; Gupdate-global-reputation-list
5 j/ p8 A' G2 D1 s7 h

( Q& B; N% t  C6 ^+ fpoll-class
) t. |1 q; o( ^( \( }
$ K- i* V3 n% F8 [' ^$ p
get-color
  i  v; |$ a* z3 d

. Q7 _4 m2 }! Z, H+ H# T]]
' ?9 |" x" o  n8 p( C" N3 H9 \+ K% S( r! D' c$ o3 H! I) G& p/ D
;;
如果所得的信任度满足条件,则进行交易  r7 l6 j) p8 a) z9 Y. @/ @! D# j

6 A& l/ L4 |* R0 }6 W$ [% p4 ]& b[
; q: v/ r: V2 x" u7 s" z

9 e3 W' {0 ], d1 |" Crt random 360

9 b/ {* E5 w- L0 G  L  \* K9 [5 t# m
fd 1
. U) r" Z. z# w7 Q: x8 I# c
. x/ R* b7 Q) A- H1 c& E: v  n6 m
]

/ w6 V4 T( `( G( S/ v3 f3 H' y( Q4 {$ m: p
end

8 h4 r( X" I# H' l  s% H1 g5 m
/ K5 M' d$ d2 ?1 ]3 ~" T, _" |, c9 ito do-trust
2 V- L2 V& I: s) {set trust-ok False. f7 u# M; ?9 j0 b* M

  ^* J! _  {- B) O
: z+ y  b& G' Q3 c( {0 Y
let max-trade-times 0
+ g: X+ W! r7 b3 n+ @foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]' t0 v5 Q, V7 q! k" }0 Z
let max-trade-money 03 V; S8 W  G/ W5 e$ k! j, m2 A7 z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# e' V: L) i# w4 Ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ b9 [% [6 V( {  \% B6 y
8 ^2 e% Q" p1 @2 }0 `1 T

  U) A/ [! ^1 _; q5 [. D3 s3 Mget-global-proportion& N; D* S% D+ n4 p- _4 w
let trust-value
3 p1 a$ K" A# r, B' O, Ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
7 |6 a. C/ q+ p, W. L0 U
if(trust-value > trade-trust-value)' H6 o( Q3 X" K7 p- ]
[set trust-ok true]
9 u. @5 V) R% ?end/ w2 a9 z0 C+ w* r4 p) ]7 i' G
( k  N2 [" N: Q9 o- O3 `
to get-global-proportion
5 |% Q1 r* U* F: Xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% f3 R( A6 J& G# c0 H[set global-proportion 0]
; e" G; G" R( m3 [- J5 l, E: H: D[let i 0
7 |: `; ]7 M5 c( |8 G/ @let sum-money 0/ z  n" G- Z4 v/ C8 p7 ]+ V% B
while[ i < people], F! B5 b7 I5 C* i  J- m0 s% Y
[
# t/ |- G. m& J1 y$ g4 bif( length (item i
8 \+ J9 M# p1 Y9 X- b" E[trade-record-all] of customer) > 3 )

. N( ~2 w* l+ u; p3 U$ c[
5 ~0 d% }* P9 r2 Tset sum-money (sum-money + item 2(item i [trade-record-all] of myself)), t$ M- h% N# B3 q) l# u& ]" S1 M
], i' x: M1 p) X4 m# S" l3 ^
]
6 M, N7 a# ?' _8 A3 d: j/ q' ], j" H3 xlet j 0% P% \; x3 K% S8 K" F7 O* Q4 u
let note 0
$ @: Z% J6 J7 _4 ]( T/ Lwhile[ j < people]
& B6 v2 f+ b/ q. }[% O$ z' E5 y  U$ g# q3 u; ^
if( length (item i
, Q; {3 O$ ~7 r. U% b) o$ D4 B[trade-record-all] of customer) > 3 )

/ N5 \; t9 F& p3 \8 M2 L% p! H4 c8 u$ _[/ H! G% C1 @* y& l- {/ [2 r
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* y5 T2 V. S: d- F[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; c$ Q$ ^1 y, Q/ X+ \[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. o/ @& I; q  d0 B]
# q7 E  `; S" @3 o- R& A) }]
8 V6 m0 T, L1 l4 \4 eset global-proportion note
0 g2 |7 w# ~% O9 []
: A2 U. x; f4 L5 Yend
3 o7 q3 `& {1 W+ ?* A  v/ k$ W& \, j$ _
to do-trade, _! j2 R& ?1 V9 O# m
;;
这个过程实际上是给双方作出评价的过程, g. |" y1 v6 W' }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& U/ O/ e4 \7 E1 X' H3 z' q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. B. {# F  K0 r  ^; V  T& gset trade-record-current lput(timer) trade-record-current- \; ^3 V2 c6 D! `! C9 e
;;
评价时间
3 I3 M$ H2 d/ u3 o5 a' Uask myself [
) Z% |1 c, g3 j: k6 e/ j. Uupdate-local-reputation: o* N  ~1 t8 g
set trade-record-current lput([local-reputation] of myself) trade-record-current% e- G2 g' }8 G+ h) L% z# ^
]
% ~0 h$ j. Y) }7 y. Yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 w0 Z4 V9 w2 S* n7 M* |( y
;;
将此次交易的记录加入到trade-record-one, l2 B4 k5 P0 S; s* ^
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. k9 i. ^1 z5 N& u6 K, ~7 w) jlet note (item 2 trade-record-current )" i2 D! _: a7 |, }* N
set trade-record-current! p9 ?1 I0 P5 U4 e4 C( x
(replace-item 2 trade-record-current (item 3 trade-record-current))
' [: q+ R; R) h
set trade-record-current' _0 t! u6 h! o4 ]2 |
(replace-item 3 trade-record-current note)
% B  U3 ~1 i$ A% k9 \( B% z$ j- W5 l  ^" f: t

8 y2 K3 j& |) Z7 h9 b+ b5 hask customer [8 z. Y% I  l& B+ _( j; i
update-local-reputation
2 V( u$ e2 s: q/ b. D& h" sset trade-record-current
9 G- V: j4 J; C- [3 }2 b1 z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( N" B& ^& v$ a4 }4 p]/ E4 I* X# A1 k0 Y1 }+ {8 J  a

, Q' ]6 _1 V/ {- ^$ j) i+ t) I
2 B) f' \, ?# R& {
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: z, [6 t8 ?) l
; w  a" e6 y# Z% D' f! i, ~
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 p4 S& z4 i. Y( \& K; c2 D
;;
将此次交易的记录加入到customertrade-record-all! h/ x( I3 @- O5 @: ^" f- I
end+ M8 ]  y$ y: V' N' ]) |' |+ H4 M

7 i+ q, |6 E" T8 @; M2 q7 ~5 Oto update-local-reputation
+ X" s& \6 {1 ^3 o( h6 Q; Cset [trade-record-one-len] of myself length [trade-record-one] of myself+ A1 m* E, x" g" t7 J
) }2 v+ ^' L2 b2 }- E" `
' v: ]$ e' [: x9 P0 B
;;if [trade-record-one-len] of myself > 3

3 Q* A1 \. v- [8 Oupdate-neighbor-total' W- z* M) e: m5 U
;;
更新邻居节点的数目,在此进行; k( {2 S- B9 S
let i 36 K* K* V- O$ e' g' t2 P2 l5 R8 ]! y4 [
let sum-time 0
( E" c6 ~) i1 q/ O: ewhile[i < [trade-record-one-len] of myself]
/ C1 S& F+ C% E" q5 t[
3 ^" T9 a! o* b: Rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 Z$ n' M# T( ^8 uset i: R) J" \# {# q0 \6 U) P; D6 I
( i + 1)
8 C# r/ j1 m8 S" z' {2 X& ?& l
]5 x" _- F" U# M, U& _3 I
let j 3
' |. J* K( n/ [# u* Wlet sum-money 0
) z0 ~1 |- y9 s  Nwhile[j < [trade-record-one-len] of myself]
! s! w& }- \- A& j5 v9 _9 j[
( m" D8 H% @3 {+ J' j- cset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
3 }6 x3 }' d" f7 P$ ?# Eset j3 [  }' T) G$ W9 ^# v
( j + 1)

' Q) T4 a6 N7 z" [  E! F; @! h]
. i6 g' U, q) x1 ilet k 3
- R' T# r- w, Q3 {let power 0
  J. g+ a: g/ Y3 j1 t8 Flet local 0
2 c. m- R4 S9 G  Fwhile [k <[trade-record-one-len] of myself]1 g1 L9 s, A  Z
[; I9 t* C0 l" ?; v$ ~: Z) K
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) $ E3 X8 J7 O$ c9 n
set k (k + 1)* T* f9 u% H, _
]
  m( {0 H, p1 w7 Lset [local-reputation] of myself (local)
/ u* d( [7 W$ K* Eend: C8 }9 T1 C# y) x7 b, r9 F

/ H% p0 Z( j5 y0 A! Eto update-neighbor-total
3 g( b* z* r4 m2 r! K7 [+ E
0 T/ A3 @1 P- G9 \7 m* b# o; N6 bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; C( l$ G! g$ \1 p$ z  U/ i  F& e8 Y/ @0 e+ w0 R; b
0 ~* |! X: l8 r. m  a/ W/ ?# @
end& M  S; |) E  Z- N9 e; _
- w; x% w! G( Q# X% P# U2 d7 H
to update-credibility-ijl : D8 K. A# {6 [7 H# O9 G% |
! o- j! h: P, L8 z7 b/ z) Z. a4 Y
;;
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。' q* j$ \! g  f& P$ d! B
let l 0, I4 m- @2 ~* z/ O/ u+ l
while[ l < people ]
2 `% _! L( {5 {- y;;
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
. K/ q6 ]! E) _5 {8 ]9 c3 X0 {[
8 c, F5 P6 U- Y8 e! vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)- @: V' t( K7 ~; d. G0 |( B
if (trade-record-one-j-l-len > 3)
+ j+ P; R9 G, x0 m6 ]3 W[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
/ ^4 X# h- r, K( Z6 P0 U0 Slet i 3
6 C6 `% o) K* U; m' Jlet sum-time 04 c7 }/ _9 B$ K3 r5 O
while[i < trade-record-one-len]6 t3 Y, o2 Z* l) \7 ]" C7 U
[! V* e1 i: @0 F0 x7 a
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 I# {0 |6 T% O5 I$ N' g
set i$ w; _0 Q( f( d- P
( i + 1)
  T! `) A! ~3 x, [7 h
]3 T. W, j# X  J# U( [6 ~7 S5 P
let credibility-i-j-l 05 u% D# J. A/ p; u
;;i
评价(jjl的评价)' S, p) w9 Z* L/ |
let j 3
: [6 k; {  T! L! h! ulet k 4
  f% h* _1 z$ E! B. _' I% l( q' qwhile[j < trade-record-one-len]
3 Z. C* Q% H, ]  l" A' ]+ i[5 {" n% n4 O" Q) G% s$ x
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0 @& b5 g4 q2 X. 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)1 ?8 R- v" A. \6 }  z- d5 C/ v, g
set j
& Z# P) _( x# Y5 ]" H3 d3 P( j + 1)

/ p& P& I4 R! W3 M]
* B  Q9 t3 n6 ~; V, Mset [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 ))
( o7 w7 u$ I' |6 `0 W- A1 a6 s! d1 V5 K$ |

) K1 e7 s. o# |- Ilet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ [# }1 |8 ]. `$ H0 g# F# Y
;;
及时更新il的评价质量的评价
5 y2 v7 `% U1 Yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; W% R  K0 [/ k9 K6 W2 U5 o- |set l (l + 1)
& L5 h9 f$ O; Z) e7 _/ N$ w, M' Q]
' `- a+ S  j% ^& N# {/ s; Y0 tend) M) p3 b" x; O* I4 u
3 _% R+ \6 _( Y- a
to update-credibility-list
5 ?9 i" ^2 O5 ^; s& g# Alet i 0  S+ b# C6 C( k6 s4 u5 D0 g; a% ~& C
while[i < people]
  i3 Q" h" A$ ^% m. {" e$ f) P+ d9 B[1 w1 u/ [  b1 I
let j 0" \: C3 f2 n, F3 \3 N
let note 07 J) t$ g5 ~* d( U! \1 Q
let k 0+ H4 v, K2 O1 a8 C% u1 x
;;
计作出过评价的邻居节点的数目
( `, q7 a5 p+ B: [/ k1 xwhile[j < people]) ?7 m6 R6 {3 B7 d
[
% Z% n: v* ]3 ~! X# s9 Vif (item j( [credibility] of turtle (i + 1)) != -1)
; W3 }# v. [  p: e, Y8 Y;;
判断是否给本turtle的评价质量做出过评价的节点1 I; |  y6 r. q2 J5 W
[set note (note + item j ([credibility]of turtle (i + 1)))
9 h9 }9 u, g* K' j$ G- O6 n. };;*(exp (-(people - 2)))/(people - 2))]
4 l9 F# p2 A: b
set k (k + 1)4 F* {; z1 T% H! u+ \3 n8 M6 k
]
- ?0 |* B7 s) mset j (j + 1)8 @3 J0 t; a8 G+ G; b* F. m
]
/ g  C2 l2 {) i. m+ c  K7 H! cset note (note *(exp (- (1 / k)))/ k), M. m; _3 S, t8 F' t" ^$ A
set credibility-list (replace-item i credibility-list note)
: c1 l1 O( Y5 ~+ C  ]4 h& o% iset i (i + 1)$ g& S$ ~. j% }3 h% @+ {" }
]- j* h$ j  O. I! p% f& I" y7 R
end+ B9 t& }% t. `6 Z
9 U/ O' ^7 b2 c" @% o& X- t7 f) z+ L
to update-global-reputation-list3 v& o; o1 K/ o5 m- Y6 l% g+ M
let j 0& ]: k' P4 Z7 d$ s6 n- H& a
while[j < people]
% L7 _& k7 N7 U; O+ C. e1 q6 M% V5 B[
( L! B- r# Q( \/ h" T& zlet new 0
" Z0 a* p; P3 |# r;;
暂存新的一个全局声誉  q1 ]5 ]" ~: z3 v8 t1 R
let i 0
) \9 S2 A' H# x( I4 t" Dlet sum-money 0
$ S+ @5 t' v8 l& N. Clet credibility-money 06 A0 ^$ e0 Z2 y: d, |
while [i < people]
9 I3 L4 b6 w$ a4 S- h2 ^[
# |& P, c" t! Iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ c( |( Y9 d7 T9 \. U' N9 n( }9 V! Iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 i% b4 T5 Z9 @* R! }set i (i + 1)1 B" N+ g8 v  P2 Y. |+ o: k7 t, O
]
3 |, |, L7 \' I# X3 t: R: B8 b# Nlet k 0
0 r6 w3 `2 Z3 blet new1 0
; m" S9 q" {+ a% f6 t2 Dwhile [k < people]2 p& m/ ?' @4 b: l1 o* o) F: K. [
[
9 H$ O1 g  l* R( \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). s% b8 P. I9 }- w- u$ o
set k (k + 1)
8 o% I& `& F, a]
1 }& o6 H  ^, H1 O0 U+ |" Z3 M0 l5 Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   ?( G7 b9 T  r9 W) d1 [" V6 L6 \
set global-reputation-list (replace-item j global-reputation-list new)
, Z2 [  s( x' j  _: Fset j (j + 1)
2 g& `4 D, u. E- ~]
: U2 ]. k) K; a. \end
* S, z- P9 {% X1 @/ ?6 q. o% B- r& L# _# B9 L

" U7 h: j& [2 ?, ^* h3 Y6 Z6 K2 U9 G6 e1 x
to get-color
4 i" \8 G# E1 H1 p2 ?. [/ K
9 C: t$ E" |0 {set color blue

1 b6 L& P2 |) d: j/ o3 R7 |: G1 F! P0 hend7 T/ q& A$ H7 q% ~& Y$ [

& M  }* ~& w9 D& ~+ }. cto poll-class; n" j/ Z4 l( a3 O0 u
end+ Z/ M4 e5 R5 {6 L% s. X" T
# I  i. Y7 J$ n/ D
to setup-plot1
, I( f1 R7 H% I& j0 }7 G
8 {- e, Y" {6 L# Oset-current-plot "Trends-of-Local-reputation"

, X8 f3 v$ d; u- N
2 ~4 M$ `- H+ R. W7 eset-plot-x-range 0 xmax
) t. C# [/ o* p, w) R# P9 }# C
1 |& g3 u9 L5 l9 Y
set-plot-y-range 0.0 ymax

* t' S. d3 b1 t) _2 I, v1 [& Yend
+ P0 {: t" F2 L% D( W
/ s+ J& v  L5 G/ U! w( sto setup-plot2
, |& ~9 |8 C* s0 L
: t. ~: p4 H, Jset-current-plot "Trends-of-global-reputation"
, u) n  y6 h5 i

* T0 v, H  j( @. S/ X3 R6 O$ A! Cset-plot-x-range 0 xmax

) {, b( V* F! f( b
! A! ~; g3 ~9 P+ L' R8 nset-plot-y-range 0.0 ymax
0 j& M; l2 P) ?! p$ }
end' z( _' m) L" H5 ?
& l/ e; o- ^# L/ y1 \# T6 _! Z& G
to setup-plot3
& s" [0 b7 z+ X0 ~# y. f* U5 h( i! t! ?0 h4 ~' E
set-current-plot "Trends-of-credibility"

6 l# ]# a  l5 ^% l1 G/ V, i
% n* d8 r) t+ {# J. G, p0 D8 \2 `* pset-plot-x-range 0 xmax
% m) {4 u& S% {4 c
  X' a# U' `1 a  ^# _# L
set-plot-y-range 0.0 ymax
5 [% J( U* {/ [& G# v
end
$ N2 ^1 X! B! j, r$ a* M
2 I2 }4 A2 z; b7 ?: nto do-plots  @9 o4 o* j  g: H, X
set-current-plot "Trends-of-Local-reputation"8 W1 P6 N* O$ Z3 j; `
set-current-plot-pen "Honest service"
1 [, k) ^3 j: p* L+ @( g, yend
& H/ L, u) e9 d5 f" L6 h/ b1 }% C- _3 Y& G8 V3 D
[ 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.
# Q: o. i0 }, @7 ~2 g; m. g/ H% z0 P, u
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

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

运行不了

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