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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/ `: A  W) C% \to do-business
- K) |1 u9 s3 e. U3 P% Y6 }' c rt random 360& d0 T( R+ i! g$ s( k
fd 1/ b% _: s8 a: a6 F) s1 c7 g4 Q
ifelse(other turtles-here != nobody)[
7 F0 b% `! M! ]3 z9 t3 f" K   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.
/ N& _$ a0 N, l4 ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 F8 @' t4 w( E+ W5 c1 j   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- D! @2 ^6 k8 ]! l- r0 U: I
   set [trade-record-one-len] of self length [trade-record-one] of self/ B3 x' o+ H) R# `
   set trade-record-current( list (timer) (random money-upper-limit))# m% H. f! Y$ e/ w
$ S) g# M9 P& H* a1 _0 M2 T0 ~
问题的提示如下:
9 h- G2 L3 t  ~! ~2 p) m* A4 |7 H9 {; m
error while turtle 50 running OF in procedure DO-BUSINESS
7 F! X1 Y( _& k% `% e: m, W; v. o  called by procedure GO
- i% x: x: G0 K- ?2 N$ AOF expected input to be a turtle agentset or turtle but got NOBODY instead.5 n+ |2 Z2 E+ M5 I4 F  L% m( x
(halted running of go)3 D; H# x1 i" d- a
' }  G. e6 Y5 u0 s/ s: O
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~~* r" i# V) _: F5 g
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! z3 q% u7 G$ E  Y4 @* j
globals[! l" O( K& f8 d8 c. E  \% Q# U1 l
xmax' {' W& b0 c! f5 i1 p# e2 [+ S
ymax
# r) k# k" o8 ]global-reputation-list8 ]# q& _) C: V& R( P+ ?. g
$ L7 ^' r3 o* p0 _1 k, x% o
;;
每一个turtle的全局声誉都存在此LIST
: U% R% d& H# }- Ucredibility-list
. _) s, h. o1 a  [;;
每一个turtle的评价可信度: L$ b$ \( h- C2 d9 z
honest-service
9 U1 Z+ _! I4 p* f5 {+ [; aunhonest-service
7 k9 e4 a" Q2 x0 f0 u9 Z3 doscillation0 v( R5 S5 q3 p  T" A& Y; K
rand-dynamic- J% U! W  z: _8 |. v3 M
]3 N, O0 `8 B# V% b6 R, r7 T+ E
. {) U- n7 }: Y" d% u4 F6 n
turtles-own[
7 \+ Y* |: e( ^% S: [; W7 rtrade-record-all' w/ y6 S% V# x7 A, G5 x$ f
;;a list of lists,
trade-record-one组成2 s6 u! Z; S$ s2 E1 \* Z
trade-record-one
. n" @8 L2 x- Q1 U;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% _3 c2 Z1 ^. ^' g5 b# A: N( ?

/ m) I3 t5 o* @) N$ |7 S, y;;[
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]]- V# f+ n2 u5 U3 Z: }7 G
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]
0 ]: M: }) E0 S, N6 ucredibility-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list2 x  h& n) N% r
neighbor-total
8 s7 [0 c/ y0 t;;
记录该turtle的邻居节点的数目
( C3 e4 w+ V" o" T9 o: C& X7 ktrade-time! h7 q( t0 i: }. a
;;
当前发生交易的turtle的交易时间
3 ?+ n- w8 l. y8 m& V' V, Aappraise-give! n2 f' x! l5 b5 c$ v0 M
;;
当前发生交易时给出的评价
8 z' v: b6 R7 q, l- ]* G% e. wappraise-receive- f1 T( ?' Y% L9 F4 y
;;
当前发生交易时收到的评价7 `: e/ z; c; o* n$ H' ]) R1 a8 ~
appraise-time
% D3 }0 W$ m8 B  o. a- o4 `; };;
当前发生交易时的评价时间
  I1 f. X4 F* u) ^$ z$ @# z/ hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉6 T8 m$ k7 T8 Q0 P4 k0 q/ @
trade-times-total
7 X& A7 g  O/ `2 C;;
与当前turtle的交易总次数, `# M" b/ O! q/ j& W- X' i5 ^
trade-money-total' n% E  Y# P: ~" u
;;
与当前turtle的交易总金额/ K8 Z, H$ ^7 c( c8 x
local-reputation( k; W! h4 f+ }* D5 E
global-reputation
) Z, {1 I9 z4 v/ I: B" D$ @credibility( l% d( y- }/ d" t7 h0 a$ \
;;
评价可信度,每次交易后都需要更新! H# Z! t/ S/ z+ `* `% [
credibility-all% P- x" v: L% N/ x
;;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
2 i) m: E! J* }1 L! w6 G' W4 C2 u
7 c" X  a) s8 h$ 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0.54 M& Q" i  w7 [
credibility-one; \  S( Q  d1 ?7 X
;;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
1 ^! V) ]. @' ~' rglobal-proportion
+ S6 g+ C& l& }5 |9 Xcustomer! V+ @7 P6 v6 V
customer-no5 _9 r/ t0 H$ R- _: w$ J* Y. S* y, k' C
trust-ok. L+ _1 c: V6 {7 D
trade-record-one-len;;trade-record-one的长度
* n5 j) \' u4 g  r9 A% T]
' b1 W' d' r( O
0 Y) t# C( _, F, K  N;;setup procedure
/ p2 V4 M# p6 i
1 H8 L: U: a1 z8 Hto setup8 M5 w# `( e7 w

4 B9 E/ y% I; ]% p( o: J. j( tca

3 U$ a( W; u8 y2 m- {
; m* y0 g' u& D' w5 V+ {initialize-settings
  U* Z. E% L" ~! A/ @
7 p9 }0 h1 E7 d, g
crt people [setup-turtles]

6 ]0 x) [. ?# L9 \% y# f& v8 a5 w
/ d7 j6 x* ~+ h6 O2 Z7 A! Z7 hreset-timer
5 W0 m- _/ t; R8 Q; J% r- X
2 O# G  |8 k$ [9 S% H0 S
poll-class
# K% W% H6 z8 n: b+ w0 f( H4 c
& @0 r  |& \7 ]4 u4 O
setup-plots
. ]0 M% ^# Z9 c& \

8 B+ H( ]* m4 g& Ndo-plots
7 c( l- m! T; `2 Z' |& {
end
& X1 N, x! B" n+ F6 r& Q) j" ?, d
5 u- r% Z$ [. l8 ~4 m1 y+ O- D% bto initialize-settings
& h4 i2 c! H8 ^' M: j6 e6 k$ B/ ~4 s5 O1 t
set global-reputation-list []
5 ^: l+ H. I/ m& c
+ v9 u) l/ z- ?' ~
set credibility-list n-values people [0.5]

0 k# _$ ^5 a  H0 I9 O$ O2 }* ^$ o" _! z9 [
set honest-service 0

8 Q5 H! h7 ]! G; j8 b+ F6 w' C" w. p) b& b3 X) x, O2 U
set unhonest-service 0

2 ?" a7 c" S3 K* J
; n  b- G/ k+ I  vset oscillation 0

' @5 O2 _: b8 W9 R# M
0 [, q$ k$ O% x/ M5 t4 d* rset rand-dynamic 0
+ ?) Y9 p6 s# V! D2 x' Q
end0 ]+ \7 m( a1 t6 T

) W3 X# D! b4 x& Y1 U8 O5 fto setup-turtles
7 q, e8 L) m* \  _* Bset shape "person". u, ^  ^2 e; g7 o* z
setxy random-xcor random-ycor
# e3 C3 D, x- Q  n1 S# k6 y1 Sset trade-record-one []: ^4 u: p: u; @. u

# ^* d+ a& l# C  C% g* eset trade-record-all n-values people [(list (? + 1) 0 0)] 5 _8 |# E4 Q8 O, L' Z3 c

2 A; w: U+ \! A4 H& q  Aset trade-record-current []
& S$ j3 E/ J9 F8 x$ N( {, \set credibility-receive []6 Q3 D" J: u$ i5 ~, r
set local-reputation 0.5( q! |9 N" M5 T. g7 H
set neighbor-total 0
3 S% D1 F! b5 e( x* [( h% ~set trade-times-total 0' F3 q. b- L/ Y) V2 T! r
set trade-money-total 0
0 h+ w( n- g( S3 R' g. gset customer nobody
( r6 Q4 x, S1 w8 z: C6 j" _set credibility-all n-values people [creat-credibility]
. e: s6 H5 S8 a7 X9 hset credibility n-values people [-1]
& R* \* [+ N7 D  Kget-color
* i/ N. x# A0 G
( k6 Z, _8 S2 M6 I
end7 l8 a/ W0 ^: B2 l$ Q5 I4 _6 `
; s4 M/ Y/ o  I# r" c% W! ]( J0 I
to-report creat-credibility# y& E( m4 x; ]( Z3 `
report n-values people [0.5]! n! d3 j2 O' m) i
end
+ `  g# f" T( Y9 e) f
* Z1 f- a! t9 X) I9 y" O: Dto setup-plots
: _( E" ~9 y, ^
: U4 ]+ p6 d. N% gset xmax 30
& u5 ]9 i. p8 |  k& m# K( U$ o
3 U  c2 i, q* R5 M$ [$ Y
set ymax 1.0

$ g; O# i' O8 s* L% X/ d  v- g) S6 B) c' v- n
clear-all-plots

7 B3 I' l3 ?3 ^& f1 s& o' b6 q- U8 D0 m4 L7 i. o4 f' ]% R
setup-plot1

- ]) q' Y' _  V8 q2 B4 j( ?  H/ M8 q, N" E* ?5 \. \8 V" k8 o% A/ w
setup-plot2

; @6 B3 j) C" J
: d( C& S! Q" B- esetup-plot3
% `7 \) m( Y2 A( x
end
2 b( k" i$ @) d& v* _' q  D8 @0 F* k. M- C/ Y& e" ~- X
;;run time procedures
; j8 Y9 z( v8 \4 }1 B" w# n. T
: C3 T+ `7 I: _to go% N+ a* {' I5 b6 |8 t& r

! g3 W+ f' d# ]8 Rask turtles [do-business]

" Y/ O; C+ ~* y0 {end) l; ~/ }, k* P6 m1 |
4 H/ n) h/ e& ^5 o/ R, N4 U& {
to do-business $ B( w, t; h& K. n5 U/ k

; V2 J) h) W9 L* s5 q1 y# o, o1 v: ^: ?0 }0 _/ S; {8 V- W1 T8 S! r5 m
rt random 360
: u7 P6 K  D0 m' g( E5 I) A
' a/ F/ Y$ y: k7 M- y
fd 1
/ I- K- [, H1 E; A) T6 D
4 b9 W) B) d8 V1 x; \( g7 o7 s
ifelse(other turtles-here != nobody)[

* @! ?. R$ i6 O7 N/ i/ ^# M5 [! Y
# Q( G3 M' V5 N. v( T- Rset customer one-of other turtles-here

+ u4 F8 J: N5 F9 _5 Y8 x, r1 j
" J4 G0 ~7 a9 E" J5 I2 n  i;; set [customer] of customer myself
& K+ N9 Y$ m' V1 w+ o3 g5 c
: ?1 b' U8 r. v- ~% h% [, d! X5 R: d
set [trade-record-one] of self item (([who] of customer) - 1)$ _4 s+ k8 p2 u
[trade-record-all]of self
& U& U/ m0 ]7 ~' r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( w% }' l  u# X$ d/ n. d. O" ^1 z: R& ?6 b8 N5 A
set [trade-record-one] of customer item (([who] of self) - 1)' Z) m/ L3 k5 L* |$ [' S' \
[trade-record-all]of customer
0 h/ O& }2 Q2 L
0 w8 ]( ?+ L* s1 c4 K2 R( E
set [trade-record-one-len] of self length [trade-record-one] of self

% a( m- w" M" m3 C5 K8 r7 M  s7 S1 o* L
set trade-record-current( list (timer) (random money-upper-limit))
- A4 \% @! I9 h& J
" Z' j  Z5 y# @$ A: h" U
ask self [do-trust]$ Y  h1 Y9 l+ g" j" I
;;
先求ij的信任度
8 T  z2 J2 B/ v$ ]4 C
5 R! ^, V. O% Hif ([trust-ok] of self). ?5 h  V( Q* G& d, M. p0 `
;;
根据ij的信任度来决定是否与j进行交易[
& c8 B. _. c2 J) W. d" }+ Qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 s2 E* P5 Y4 k! \3 @5 R3 n
; p: a, V! L* ~% @6 `# y/ O
[
1 y8 z6 `! r3 S

1 ~$ y  S  n7 [do-trade
4 H" a3 b9 x& ~& D

5 x7 d1 w* [" D* @1 Fupdate-credibility-ijl
" J  C/ _: z9 W8 m5 T1 g2 q

3 [1 ~& R) B5 R3 O  kupdate-credibility-list) X4 b! ^' V% g5 \( K1 L$ |% o$ S0 S
! |  Q& H4 ?- i$ Q4 m- g( B" Y
& ~; G3 m3 @) a6 g$ `
update-global-reputation-list
2 F* I  I' R) g: f. }

8 T% U' V+ u9 n0 W1 M; S" {poll-class

9 w/ c$ B: o- x+ W7 t8 w( y+ v* e
2 Z( }9 ?* y/ Xget-color
* d6 G$ A  S# v; H* ]
: Z; O3 y/ e$ C4 \; `
]]
! o8 K' q" S9 H9 U& ~; H3 ]$ J# q- I5 S& E; @: y
;;
如果所得的信任度满足条件,则进行交易* V& W+ U- d9 C8 Y$ d) @

9 _; M7 D8 L6 i8 M: h; _! g[

0 Z. I3 x: Z& P$ S$ w0 b
1 P, E2 c7 e  Q: Urt random 360

" t) W2 I9 c. w# ~/ A; X/ d1 i4 c. {$ d7 D; {
fd 1
2 c6 v1 m2 B" z# \
/ C4 r. k( y2 u
]

/ t, U+ N9 B, _9 p, y+ r) V3 O, H0 c( p) G& A; |6 B5 z
end

$ o. `, W7 P4 X; e8 D% {2 f" `5 ?; P3 R5 ^
to do-trust
; \2 V; R1 A- H. Dset trust-ok False! o$ c0 k, C; i
+ j4 N) G3 U: }" k
) N8 o6 {; x4 o8 s+ O, ?5 M6 ^
let max-trade-times 0
+ P5 ~/ V6 {6 Nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 ]! ]: L/ g1 B: _  l/ i( `let max-trade-money 0
6 {. B% o/ r( k/ X5 xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. c! ]9 v) H7 j3 e0 d: elet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); L2 u/ K* S3 M5 N+ U0 X, o2 Y

( s# m  ^0 {: h/ L

8 M; {: d$ j+ j: X% p: i! zget-global-proportion
# p& B0 ^. z' L  j4 K. g6 flet trust-value" _! L5 m8 h3 d4 ^6 v- P" q/ k- Q
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)
+ w8 ]# }8 R" h0 ?  }1 V1 g0 T
if(trust-value > trade-trust-value); a: d2 ~/ ^9 }/ [8 r- A! E. f
[set trust-ok true]- Z; K3 f* D; g5 \+ j) }- g
end$ ~. y1 m, c. z! X- s8 _

# W8 A4 |6 b$ _7 r/ I$ `to get-global-proportion
9 |( n" g0 r6 B8 d, l: P- Wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 m- R$ r& z. H& x
[set global-proportion 0]4 p8 H, V" T& u* r
[let i 03 Y" P( Y& y& P  d# o; T: D+ P
let sum-money 0) @$ s5 z' c% o! x$ p/ g7 h
while[ i < people]
+ {9 H' s' L; e2 H[
7 O& u! g; e6 z- {" Qif( length (item i
4 Y0 V: ^9 t+ C& C1 v3 F. n8 W& U[trade-record-all] of customer) > 3 )
. ~4 _! y7 n5 X8 r9 f( |4 f* h7 n
[6 ^, P, n! D4 K& g# o8 ?/ e1 Q+ G4 a
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ N) f# c9 R- m. |
]
9 p9 ^6 }1 H/ i6 |5 f], D7 ?; p" f# C
let j 0- s$ O* L; G" i" |9 L
let note 0
5 z! m8 a8 ~+ k% {2 q' }7 Qwhile[ j < people]0 M/ V7 I5 @6 n1 k
[2 ~5 A8 n% x& ~, I0 ^$ @, Q
if( length (item i
6 Q( K$ X6 A8 L[trade-record-all] of customer) > 3 )
+ \; O! t# e4 _% m
[
! f9 v1 Y1 g) o: @9 yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). r; {; S1 ^+ I, f5 f) l& K5 Z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. y! Z( g5 }: N! n[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 p6 s5 c6 I" a0 o) T! P]
, C9 A# f% U7 u]$ @% E9 g; o' w& W/ a+ a9 r
set global-proportion note
% ]! e# n! H" N+ S- e( G% `]
0 ]3 _7 Z0 M6 X3 j! Kend9 i% u6 {" B  R8 G( I( v
) ]" Z; p% K3 [0 g
to do-trade
2 `7 i% R- E7 Y: r7 {% n3 T;;
这个过程实际上是给双方作出评价的过程# s8 L; o- |6 Q1 j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* R" x  \( [5 `+ ~6 ^4 `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ k5 W) C8 @2 I- t) b9 h
set trade-record-current lput(timer) trade-record-current# Q7 C8 k! D; M$ Z# s( J
;;
评价时间/ ~3 g8 [( _* h( G
ask myself [8 k8 ]5 G4 y' T7 `
update-local-reputation: @. B" C' B' h* w  H5 G
set trade-record-current lput([local-reputation] of myself) trade-record-current
4 G* o6 h, q$ @* E  X( F]6 B% @6 `4 W9 R1 b4 V
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" H9 {; \3 b8 }9 ^: z  j;;
将此次交易的记录加入到trade-record-one8 ^0 F. i3 N  c( e+ J$ ^6 J
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ j# R( Z4 a" ^8 u' ~1 }
let note (item 2 trade-record-current )
( L6 B8 [  ^7 n2 c6 uset trade-record-current$ v: o% q; J$ [0 W$ a& S
(replace-item 2 trade-record-current (item 3 trade-record-current))

# j+ G5 f% k8 m+ Fset trade-record-current8 [1 w" j4 U3 S# d( U
(replace-item 3 trade-record-current note)
) a+ y- J: ?* Y) I
8 h; s3 N4 Y) }8 P' F
4 {: l" j# w% M5 f& C
ask customer [
( |1 B7 e0 ]8 P0 H$ z, M' x/ Fupdate-local-reputation
6 x+ L% i1 ~! \1 @  gset trade-record-current
5 M5 r1 d' d* n' e" N8 s" @(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* R: p: `" I2 m, s]
4 N# j4 U) q9 Z/ G% p# `* x  S. v: l3 T# J' ^9 X$ n' ^% Y& z6 E
9 N/ y- \& V: M* z; A7 c; d% ?
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer6 S- s8 ?( \: Z& C" A$ ^: v, J! N

( V. {. O8 r3 w  f  K3 H. qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! J& M4 u* [. b) \# b+ D
;;
将此次交易的记录加入到customertrade-record-all. f' u/ f. J4 ~5 {+ p! C- v& N
end
6 S3 f( V+ E6 N) ?& c2 n' d
- z* o3 t& e! ^) p+ Gto update-local-reputation
; w( w" p( q3 R5 E( yset [trade-record-one-len] of myself length [trade-record-one] of myself
/ R9 M3 X* @& ]) b) r/ `8 ?/ ?/ P7 ?/ G2 n
& S/ b5 B" E/ {6 Z1 W. I- g
;;if [trade-record-one-len] of myself > 3

. c5 S; u: ], s* @0 @update-neighbor-total4 u' E1 R" K2 F8 s" H  V
;;
更新邻居节点的数目,在此进行
* f' S. m% B; K# U: p6 l' ]let i 37 \+ d+ ?. G& l* I
let sum-time 08 G: T- b) l8 W, W
while[i < [trade-record-one-len] of myself]
) c" w* V. b. U2 `[
4 s$ ?9 l% g8 F3 N" r5 qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' w4 f* N& E' `' v& x0 o7 mset i& w1 T+ b7 z! y4 k$ G! S( o
( i + 1)

! n3 k" n- R" J8 J+ |]
% w2 x8 o' e, x/ a$ a' r; zlet j 3
  D1 L% K' b- H3 N$ [let sum-money 0
% z: ?! S7 p" \+ P. d9 W- ~0 vwhile[j < [trade-record-one-len] of myself]
/ z& }  a! R* N; R[& u* E9 s# d  W$ m3 \+ J
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 d: x. E" j/ \set j
/ y: G) J" Q1 A% @0 }& K( j + 1)

* J# L- Y) y7 R! I  y]
# o2 z) ]4 o; Ylet k 3% R2 Y5 \* J( ?  w, A' N
let power 0. z0 Y) |' [- Y4 r$ x' q& R
let local 0$ E2 c! g. Y0 n, e
while [k <[trade-record-one-len] of myself]$ B1 @: m4 z' k: N6 z
[& _  M, _- k4 n+ y/ z! ~1 s
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) " I" X  Z6 ?% g6 Q
set k (k + 1)0 r5 g9 c1 u5 V5 H7 T% U" Y
]2 B* q6 `5 T# B2 v/ z2 Z
set [local-reputation] of myself (local)7 y% x4 s# n9 n; e
end; y8 h4 |8 B' r$ E2 }" L

5 j4 @: V6 g. b2 D0 Yto update-neighbor-total
/ c6 u2 w9 o4 n& ^* z( q& T' T, L$ J6 s  r2 G1 P
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 L* v" j& n( R& p* B7 {  t
' X7 T1 R& I0 Q# g9 t7 z8 Q
3 ~6 {( ?& q1 w- U; ?/ N
end
# ?4 _  d: F  P$ N; A7 z% r* [8 T+ E- N9 C
to update-credibility-ijl 4 p) u! w9 A3 j  u* [  l

9 x4 p7 S- b1 Z+ }9 d% x% H, X: [;;
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。
0 I$ t/ |' U0 J0 o3 f1 V  G# z) Llet l 0
& {' L* v% j6 e$ T' t7 ?while[ l < people ]6 [+ q% c7 E. ?9 W7 T
;;
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
6 l: B: Q! @, b[" `" F; D% k9 ~" [0 z! J
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)( R; S3 y7 K4 j4 ^
if (trade-record-one-j-l-len > 3); d' F  t0 ~1 E
[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
# r" Z! b0 p) N- p4 _let i 3! r1 I$ b2 @* R$ I2 |5 s
let sum-time 0
0 U" {0 ?) \1 jwhile[i < trade-record-one-len]8 q: v) s+ r3 G! W9 A% ~8 \
[0 y' Z+ [  m: C! i( F
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 c# Y5 ?( |6 S/ R
set i( |" q4 h; S9 A
( i + 1)
3 ]- p9 B9 q9 d) d3 w# |: z7 X
], n4 Y) S* g2 m
let credibility-i-j-l 0- I4 b! U. a% R" S- x2 @
;;i
评价(jjl的评价)
2 z* m( T2 C+ L, b4 alet j 3, L2 }+ g- r: E
let k 4; d! Z5 p; j' z- y+ ]0 E
while[j < trade-record-one-len]
* n1 g0 B% N* A[
# l; r6 T- t; u3 b: W2 awhile [((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
! t0 X9 c7 x: K, u& lset 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)# W6 H6 B- S! f
set j1 V+ F, n9 B* O' ?6 c( F2 m$ j) f  f0 h% c
( j + 1)
2 Y* @/ o. ?6 o1 F6 o% _* @
]9 l5 M5 b/ L5 l- e, ?" e5 g0 ?: o! 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 ))
9 `# J& n7 r0 h0 P& h% |8 W3 u0 t4 d5 E: H' ~% N, o) t  Y

' B! j- \7 K6 G9 |let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
1 ~- x& k, R4 ?;;
及时更新il的评价质量的评价
: y  f, P  {0 M( I/ P5 s3 g7 uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" @0 L% C) q  X9 Q2 r2 R/ X& ~set l (l + 1)+ Y9 U: ]# d5 \! y
]
9 b! |, H- l5 a; Mend
! D  ]" i! a9 l/ d9 q, ~  E5 f
; J; A: Y6 y6 J. B, r7 d) yto update-credibility-list
% e; F, w, ]( Q9 @# t! zlet i 0$ o" }, W. e/ C6 h* Y& p0 _+ M5 r
while[i < people]7 g6 _0 y0 J: ^$ B
[
6 Q2 ]8 e! T+ Q) W. k! p' P9 Nlet j 0" ]( Q4 P/ z* n& y) C
let note 0
& v( U) k1 m" u. a/ hlet k 0  S- s9 }7 z, ^: g. R$ j6 Q
;;
计作出过评价的邻居节点的数目2 u& V( I1 r5 A3 ]: v% e: k" @/ [; ?
while[j < people]; n- A3 f* c5 H. W* C$ c. T
[( e3 E9 P' z" u* }  @
if (item j( [credibility] of turtle (i + 1)) != -1)
% G0 T' s. Z7 j' F2 N9 i6 J- g;;
判断是否给本turtle的评价质量做出过评价的节点
2 W5 q0 E9 B: S" a  Z  U[set note (note + item j ([credibility]of turtle (i + 1)))0 Z; w/ O) T+ T( w
;;*(exp (-(people - 2)))/(people - 2))]
5 `: ?8 u4 u# _6 h% K5 a
set k (k + 1)
6 m7 z  e4 N, i% a" M]
6 y5 j; e2 E* z& D4 sset j (j + 1), e' A- W, v- j3 W) D5 P
]) P/ l  o2 I  o0 e
set note (note *(exp (- (1 / k)))/ k)
6 [2 @1 Q8 @( Y$ @8 K2 rset credibility-list (replace-item i credibility-list note)
/ ]' d7 F) g7 A0 e; Y2 Cset i (i + 1)
4 p$ W/ h& a' Q5 X]% H# X* a7 D) i- W  V  X
end
4 Z  L% N2 O2 V$ D- @% ~& t# P
! C( t. \/ P) e% H3 c% Q- Rto update-global-reputation-list  p( ]5 S! g# e% [8 [. s
let j 0, T' E& I# B' ^8 K( Z
while[j < people]3 m6 q8 W  L8 P
[
) f! [3 f' h) o. s; w9 e; Nlet new 0) o/ |! x" K& P4 ~5 _- J
;;
暂存新的一个全局声誉5 [3 h4 j0 P: J( A" Y6 R0 o% }( o
let i 0
/ K, Q/ S: B3 x5 z/ ~; ~+ }let sum-money 0
4 x, `- j9 h: j) \let credibility-money 0
: I8 ]" k: c  @8 vwhile [i < people]  U7 Z. W: Q6 ]9 [+ c1 j9 Q
[' W3 J; j: P2 l9 Q: k4 t7 z# z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- O3 `7 u' Z0 l* J2 \% w
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 v* q- X; S5 M
set i (i + 1)1 W( T" g' Y: `$ Q8 ]7 J8 C
]+ y/ e8 P1 U8 [  g3 m
let k 0
) ?" u6 T' J3 |9 E# clet new1 08 T7 z0 g+ M% O, g$ G2 J
while [k < people]: R$ q) v1 ^8 R" X: Y+ q$ i
[
  `, f- m. H7 ^( m5 o7 ]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)* g' x% Q5 F4 ?, E- B/ N
set k (k + 1)- G# E% d8 a0 J. V+ n2 `
]: \" t, w/ A/ [- k- `; K
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( K' b7 L0 b. ^: n( ]* ^; H
set global-reputation-list (replace-item j global-reputation-list new). d6 E; Q% {1 B& A4 d" m
set j (j + 1)- X$ a" N1 s9 W- ]4 }
]; k  k6 n% Q) ^0 L9 d- c
end8 O5 Z4 Z! t* x$ p  Y8 k
- ]* `3 s( H; s
  e" _5 N* X# J3 u2 D
# I3 P4 Q) s7 f6 M
to get-color# N! Z/ W% c* z+ d; h
; k' V3 U' \3 w( n
set color blue

5 f) }4 R: R( g: r' {: u  t: kend% i, L6 {7 ]0 G4 \# i4 y3 z

! O5 v5 _0 p; i( r8 fto poll-class; j1 D6 h) i' m8 s& V
end; U7 E$ X# `* q+ k  l
4 @$ g; o8 P7 T
to setup-plot13 J) C& T, z( j  T& C
. O/ G9 ]& O& r5 S
set-current-plot "Trends-of-Local-reputation"

0 A9 b9 c2 X9 B+ M, S
" a  T# B, }! {' Qset-plot-x-range 0 xmax
+ ]" w& C5 ]' c) M, V1 b
, r6 Q$ G+ T1 i
set-plot-y-range 0.0 ymax
/ A$ k6 y; m* g5 R3 L( c
end4 l! T) x9 @; B
2 ~  Z) P# a8 [, ]9 ~/ {/ x
to setup-plot2
- ~0 O- T) X3 L, A& C0 m
; |* H1 q% f' c. aset-current-plot "Trends-of-global-reputation"

% d( ?5 Z  _1 S2 M
* J0 a+ i$ i& \5 b0 J5 y* Aset-plot-x-range 0 xmax
! C/ w+ U; S" ]4 ?! p; C7 J: G

; K, |5 D1 Y& q( T( y) e8 e. Y: \set-plot-y-range 0.0 ymax
; p' u9 L' v) n0 m- D
end* s8 c8 n% n; L+ e/ ?8 |/ ], x

0 P+ O( |: [, D' Kto setup-plot3% p3 A; t4 k9 N: q

- S2 N5 }5 U7 P) c! M- \/ }set-current-plot "Trends-of-credibility"

7 [* y1 t7 V. f) T/ A9 v6 |' ~, q) e% j% {3 a& h: g2 Q4 K& O3 G/ c
set-plot-x-range 0 xmax

' ?5 ~! g; Q0 k' U( X0 l7 v( ]+ _; V& {, Q" ~7 C
set-plot-y-range 0.0 ymax

9 h; z2 s# K) G* S8 Xend) T0 X. q! k+ v8 {, q2 q4 z
" k% n6 R& U- b3 V+ B9 ?
to do-plots9 T1 n: D) ~1 p) o) R6 D
set-current-plot "Trends-of-Local-reputation"5 n6 \% N5 j5 }7 V
set-current-plot-pen "Honest service"# o4 X- n8 C  i5 G4 W" }
end
) N! Q6 D  t2 U! U: o" y; ^
- t, [0 h; I& Y9 S[ 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.7 b3 J4 \+ w, b: m+ a1 y1 L
1 p0 W# p& E9 @. E. B
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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