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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:
8 X( i  Y! M8 h. Lto do-business 6 x2 i7 H( O+ c* ~. z
rt random 360
7 V# E; H: r- g% ?6 ?2 M* K- R fd 1
% }$ ~4 }. Z" T3 L ifelse(other turtles-here != nobody)[2 T$ d  K2 W9 X/ }; X* ]
   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.  L5 ^! z4 @0 U$ y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 Z& L. z0 K4 X2 y0 k% E3 G5 ?
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  e- C0 G3 x- }4 e4 B: z
   set [trade-record-one-len] of self length [trade-record-one] of self" j& f( ]1 X7 }, l  r/ @- ?
   set trade-record-current( list (timer) (random money-upper-limit)): J( _% P. s( ^& B% }( @
& ^: ^2 E" |: r1 N# F" G
问题的提示如下:. O: `( O2 H1 J& k; x2 ^
2 X/ f" _( v  C3 A8 E2 p( S9 b
error while turtle 50 running OF in procedure DO-BUSINESS
( c# D4 o2 F+ x  i5 N; {  called by procedure GO0 I5 G& @( s& P1 |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 _! ^& B/ W2 G6 H: A/ q5 Z
(halted running of go)2 b/ V% u' X; M! |+ A

+ Y! r' W- V# ^# y* u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~~& Z7 w1 j8 ~1 A: s) L; C
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. D# M' n- A& w0 T* L9 @
globals[  n) Q" H5 J# P( j/ v
xmax
& U1 U9 G. T: V# |" k8 Dymax
( D' E( L7 w$ D) I9 d$ _- [global-reputation-list2 @+ r9 Y, @0 X
9 z' e( l. Z! R8 `/ k; p. s2 ^; u$ K
;;
每一个turtle的全局声誉都存在此LIST
+ n* D" C. a" }credibility-list
7 v' n( M7 D& e( }6 ~;;
每一个turtle的评价可信度5 |! Q/ u% C$ k3 a* f! F
honest-service' x$ s+ y2 T# ]0 s: e( Y" F3 F
unhonest-service. ~4 Y( l- `# l% Z* w
oscillation
. A: m- a' S; [5 O  ~% Wrand-dynamic
% A2 Q2 I/ Q0 r  i]
% B2 Z1 S# ?; q- s
5 o7 J. U5 @' tturtles-own[+ G: E' P0 z' d1 v3 g7 [7 |
trade-record-all
0 R. c0 V: j7 A# S' z8 q. h3 C;;a list of lists,
trade-record-one组成# K/ H) n: y4 J% J. A, c( y
trade-record-one% T+ s2 n7 `* ?5 X* z! {; A2 }
;;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/ q9 p( W% ]3 b. b) a1 o8 e! t) [- F  M8 [3 L) n3 I" l+ c
;;[
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) r8 t- s" C) g, Atrade-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]( I. n) u2 h$ W" d0 v  \
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
9 l7 a2 a1 i9 yneighbor-total8 j# F$ t  Q) V4 t/ n. Z# M9 Y
;;
记录该turtle的邻居节点的数目9 R; x7 R" f6 `: D+ n$ o
trade-time6 p- |3 u* q0 I# q0 Q
;;
当前发生交易的turtle的交易时间4 G: R9 B9 b" m+ P* t
appraise-give
: r" l3 G4 W9 f' T;;
当前发生交易时给出的评价& I1 O, p- H. i
appraise-receive
/ p, S- w# c, C' Y% q;;
当前发生交易时收到的评价7 X8 W5 s" t2 S1 y5 P  m
appraise-time' Z: f! l  Y0 C: S0 D
;;
当前发生交易时的评价时间2 N; \5 m$ O) Q2 a. [% u
local-reputation-now;;此次交易后相对于对方turtle的局部声誉4 w2 Q5 N$ M# ^& G1 B
trade-times-total
: O$ q+ H! C* F0 W: z/ n- p1 A;;
与当前turtle的交易总次数! z0 [. \9 |% _5 b3 C
trade-money-total
9 Z5 Z$ A! U/ U! I8 N9 w% z;;
与当前turtle的交易总金额
* g  J2 f+ I' F& W8 I* mlocal-reputation
- k. O  o! N+ y) C2 P; mglobal-reputation
- l* \5 A, ?# O  f, fcredibility/ z) [0 W4 o1 i+ ^; x
;;
评价可信度,每次交易后都需要更新
" z& {* F0 P9 p. Q; |$ {, w6 ccredibility-all
; o; V# J% h; e1 [2 z;;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
' e* w) j6 S5 i- \
2 P- r8 O0 J) i8 U0 e3 \;;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
2 u( R/ Y7 T4 b8 t2 t) L3 qcredibility-one
9 u/ u) \: h1 Q# 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
( j1 {" e# k! ]) F! K+ @7 X! ^global-proportion. Z5 {: K4 {3 I/ b
customer
  a6 p! G! y. B" ~customer-no
: T( D5 s: h* @- Q2 n, Dtrust-ok6 b' O* J1 P, v4 U$ g" t# p: g' s
trade-record-one-len;;trade-record-one的长度
/ U5 U; u* Y0 p' R( y]
3 q% O2 E8 |: k6 o) `* P- `) m2 n, e: B; }$ i) O: s. F8 d* e
;;setup procedure+ n) Z0 |& A1 F; b  l6 t% u7 S- A: [

/ w  i# E/ G9 C' U" A& K2 Nto setup" |. s5 h, Q. q: O8 U) L: p
1 Z# v& M( Q% c1 V
ca
, U' Q7 z1 V. `5 x
. C1 v, ^' p2 V- G; V9 c2 Z& `5 S
initialize-settings

+ }$ I. ]( y$ p& L: Z0 D
# A4 g+ j: t' _) L1 lcrt people [setup-turtles]
# o8 _# F' e0 ^* q1 e0 K
/ s, l1 P# v. b. I" l/ v
reset-timer
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3 o+ V$ T. t5 [6 ?% f$ x/ c) D: ?
poll-class
8 j1 M% h) i8 `/ R8 d- P

( O5 l  _: b5 r* T' _- F6 k- psetup-plots
" v( |  ?- k! i6 \- v

  c: L8 m% }1 K9 L7 vdo-plots

/ C" ?9 ~; ?! D1 Send
3 T6 ]3 e  x' [" Z7 _+ Y
' }6 P; x! G, }! @) ?  B) h) [to initialize-settings
/ o* E2 J* z3 ?" t4 [- a1 `, x! I4 Y- m
set global-reputation-list []
) L3 e4 u: p4 k/ d

3 p& `4 j; n" t' ]2 Sset credibility-list n-values people [0.5]
4 p  G3 q8 c5 d+ K4 ^' W1 X* T
. B% z: O: _5 t* K1 l
set honest-service 0

$ l9 S$ @# p- ^, t) k. m) H
. m! |. z8 c7 mset unhonest-service 0
' \6 Y" k& o* i' p

+ L  T; ^# L7 yset oscillation 0

" x# x) W  A* J& e- U- ~2 a6 X5 I: C/ e' ?( ~
set rand-dynamic 0

/ ~4 d. ?7 t! S) x6 D/ cend) P$ {1 d$ l! l3 @" b
8 y/ X) x; |+ |( e- ^$ }
to setup-turtles
% M1 `6 ~4 C9 j0 Bset shape "person"
+ `& k$ U+ i6 h5 }setxy random-xcor random-ycor
4 D" j, ~( ^, U1 Y# k5 aset trade-record-one []% m! X  _: j. e2 [+ H0 x# T
! l1 S! ?3 f% ^' q- W
set trade-record-all n-values people [(list (? + 1) 0 0)] & E  J5 Q- r9 R4 u5 m1 o) I& j

+ O7 I) u7 M* ^8 g* m/ Jset trade-record-current []
2 ^3 ]& q+ o+ _) J- D  P" kset credibility-receive []
( v+ D6 Z# T: g7 K+ Pset local-reputation 0.5
* G  Z( j( @/ i1 {3 F8 O( yset neighbor-total 0
/ A' m0 v0 f; t% Iset trade-times-total 04 q' u& M" [4 p: P3 t! D+ n
set trade-money-total 0) J% i8 z6 N4 ?7 R  @4 H) d
set customer nobody
5 W+ E7 F7 t/ Q# X6 cset credibility-all n-values people [creat-credibility]
9 g8 j8 `: s; W) ~  B$ dset credibility n-values people [-1]
+ J* s3 R' V1 s" O0 l* H( Dget-color& ?+ K# ^5 B  `; C6 z
3 D) ?% t$ \; @7 s& M) E
end( C: Z3 D. c& E. Q" g$ L
3 ~% a5 z$ ?2 G& F6 W
to-report creat-credibility* g4 O8 k. L7 u5 P
report n-values people [0.5]! u6 D: F  N8 t8 ~7 N! R
end+ a" `5 _) ]1 E3 r6 g
/ F( V  i! m$ x/ K1 h4 N4 z
to setup-plots, a. j/ P% @# G* Q; F2 U5 y
7 r' V: E- w! `  m/ P
set xmax 30

+ y4 q, L. d7 Z7 u
  m- U, h  I, m! r+ l8 ~set ymax 1.0

. m) f9 N1 d* Y7 t) @+ a% Z
% ]' {0 e& I1 t7 n" B+ k9 I1 b7 Fclear-all-plots
7 H7 L: W) h# g7 j: O7 M

8 l4 ^. N1 a" m" S; z7 Q0 }setup-plot1

* E5 c8 \, r( y  j
6 G9 x; {# x; N0 F4 x1 G$ N* d( @setup-plot2
! S- E' M3 A( M
+ N2 i2 n: X/ X3 Z4 C+ R
setup-plot3

5 Z7 N0 f( r: {& p, y- ]+ Oend) l3 c. ^4 X; ?, S. {( E
% O( X, F. l9 x3 b" Z- [' }$ l
;;run time procedures
% I  r; ~! x* k  G) _1 G- M
& F* U+ k5 ~; L% N  h/ t! [to go
. ~4 `' M% }  o5 r: W+ q: e! x9 c/ X1 l4 f4 {  B4 p: O
ask turtles [do-business]
! o3 v6 h8 X# ]% h, o7 e! p% \
end8 F( u9 ~/ \' j9 N, l: b

- n& [1 D  \' F+ ~! wto do-business
, o- h2 N0 g. M( n

1 ^. {9 M3 t0 c$ ~
  h8 J; c% Z* R! P! Z: b- E+ trt random 360
! f, g, q" O! H, R2 H' o
3 s, t4 K: \1 W% |- }
fd 1
! t" e0 d0 J, p2 D+ A0 i
& ?4 K% W7 Q. i+ L+ U0 I4 f9 P
ifelse(other turtles-here != nobody)[
6 f& J$ R5 f$ X

9 t" s6 {9 v; oset customer one-of other turtles-here
' J4 G6 M3 X& |9 j
/ `" |! w- s3 Z" m8 F0 e
;; set [customer] of customer myself
. x5 X6 M8 S4 m! i% \

/ S. T' q; J/ ]& {, ^5 Gset [trade-record-one] of self item (([who] of customer) - 1)
% I9 W! a/ P, z4 E2 A+ s2 d; a[trade-record-all]of self% l, ?. e- Q4 z( D2 [
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( j% L0 ^  x9 I' ^+ d! ?: n

+ O8 A1 c( E( H# N( T+ G' M; Yset [trade-record-one] of customer item (([who] of self) - 1)
% D; H. w# Z: w1 J% H" @+ V& t[trade-record-all]of customer

8 i5 W) s' `2 }, e
$ m4 Q6 `4 o% b9 Lset [trade-record-one-len] of self length [trade-record-one] of self
; q1 ?1 C8 B6 x- h

) @" T) k4 z7 oset trade-record-current( list (timer) (random money-upper-limit))

  w7 d1 j' p3 w1 u1 f5 u! H. ~8 z* R4 z- I! b
ask self [do-trust]) }; N. ~0 S, y5 {1 ^
;;
先求ij的信任度0 b' t4 ]( Q. G. a$ L% G& n; H

0 _  }) d9 n2 j, yif ([trust-ok] of self)5 h1 `7 _& G/ y# \( i; b' z
;;
根据ij的信任度来决定是否与j进行交易[3 a4 H4 @. y2 G! s  f4 E2 z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) \4 D% m, U, x4 N: ~1 ^5 L( K! e

- ]8 e4 j1 o7 i# d+ Z/ M! p6 T+ ][

2 j+ `, j- V1 k8 k5 U- j. h9 U! j/ v8 D7 L
do-trade
- r8 L3 |5 z  V3 ]8 K

6 k0 V* l) F& i/ N# V; [+ ~/ {update-credibility-ijl

0 j/ X6 P& F7 k+ }' D: V+ ]0 j% H
update-credibility-list; A2 |" r+ ?/ G/ z3 K2 e# Q

1 H  }/ N9 s- O$ l8 O5 U
8 m; U  D+ V. F" h0 G$ m5 t. r6 ^" Qupdate-global-reputation-list

, V/ a, l' Y+ i) D1 x, Q* q
# M% W( E0 @5 R  S5 g$ spoll-class
+ {% Q3 N# \0 g4 R5 K/ T9 @3 K4 C/ r

1 o7 P1 v3 g# g: s1 x7 v; [get-color

- Z% O9 I( C7 Z* T. M' o# Z; y
5 H) S: u* ?* W3 ?; E. q1 E]]# D8 w' C4 j- D5 c( z1 i
1 E  N7 N5 Q  v" W( \
;;
如果所得的信任度满足条件,则进行交易. @2 o6 f  Q6 Q: L1 v% s

2 W$ o% F6 g' h! `[

2 W" e/ I1 G5 T8 \8 S5 f  n
' \- D) g  T; p8 h; Urt random 360
, b1 M% r- _% C- {; ^" C  Q& ~

, G% c. L+ S' O9 c1 qfd 1
* t, E- k: C* ]6 i" ]" \
- f- N8 n! Q6 Z/ v) ?1 [0 p6 p
]

3 U4 F, U9 C. y# j/ n) x9 t0 u7 h
end
- a& Y0 k/ ^; i& [( U

- S" X# T: p& d) Q3 h+ D5 u& pto do-trust
  M: N3 {/ _' M0 x$ Q. t1 n+ Jset trust-ok False( X- c% m( b( G1 x+ i( v

1 M$ A) {. u7 Q6 W4 n; n' N
- y! I2 q/ Z3 Z% [) T7 @
let max-trade-times 0
7 g; h! ~) K/ \% Y3 |  v6 Tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], s1 j( u( M8 B. W
let max-trade-money 01 |) g, R! \& ], _8 a- [
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; s7 c7 b! U' Y& _2 |; h4 i0 j" }let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 g5 }) l/ B/ F. a- n* Z  D( ^. k. B. y/ G, d: M1 x! Q3 M

. Y, s: o( n( V& B9 I5 }) ^get-global-proportion
( y6 j2 T! Y4 S2 r! I- Vlet trust-value& ^) E( J* L6 Q+ F* V4 B
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)
5 m; g" D1 y5 t- n" |. `
if(trust-value > trade-trust-value)
7 Q% C5 W4 \% {- G7 F' ?[set trust-ok true]! Q! o: n& t, e; ?  H5 E
end
0 Q- V( D. o: x, r; n! o
5 h, \. e6 G& F" e3 E8 mto get-global-proportion
) ?" B- {! _  N4 n* ?2 v" rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 i  N6 I6 H# }+ l
[set global-proportion 0]
7 _" X3 [  d5 `, P" g. Y6 ~; u[let i 0
% u) d8 E5 E5 |0 Dlet sum-money 05 h2 \1 K9 z1 i1 ~  \
while[ i < people]
. O$ w4 [4 Y' M  K[/ P  ?6 r7 F  M
if( length (item i; z4 V$ A! B! W0 V8 y/ b& H* f
[trade-record-all] of customer) > 3 )
  u6 F- u- a* w7 g& Q6 `, ]
[+ P$ t6 |+ F; t7 R) E" h9 n
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 \4 E4 q& A$ i& I2 K  ~2 K
]
6 K! D2 t. u3 v; l$ {]
, p  G: c* e% J3 f4 |: Glet j 02 i/ I# k' X7 ~- R7 M* Q
let note 0  }0 C! _5 R% Y# y' b$ ?1 \
while[ j < people]: F* t9 V& [8 l! H
[% Q! p! T+ C+ V  \1 _" O
if( length (item i
1 z1 e, r/ S/ D[trade-record-all] of customer) > 3 )
2 }4 N, x: M% w3 F# ~6 s- F9 W; R4 O
[0 }9 n8 m1 w# N, N1 z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, s  H" t8 g7 K# h2 t0 X# V[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. w$ Y: U& n; ~! T: C2 J[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 x9 S( U, Z* q) @2 K5 a]
: P& H; q2 E6 ?3 a, U9 U' K]
' c$ \: D: J9 i8 Dset global-proportion note
; c  `/ I" `8 g1 k( Z1 K]' t6 _# ^$ ^3 Z/ m. z  o0 V! V. j
end2 N2 K% b. D6 w6 l3 E. k- G
3 y& O0 `3 I9 k' H/ @, e4 N
to do-trade" Z. i2 L. I6 N; u" S- N( n1 X
;;
这个过程实际上是给双方作出评价的过程
6 Y2 Y1 V  U/ pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 ?- E5 X  A" f3 Y8 X( Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ X9 Q# O: t/ X
set trade-record-current lput(timer) trade-record-current
, z% V1 p( d0 F* K. M;;
评价时间5 Q$ o' j5 N' b# Y4 ~5 K6 R' E* [7 q, t
ask myself [+ P( \( }  @. w8 S& J% q, F/ X
update-local-reputation
: _1 H% P# u( b* ?set trade-record-current lput([local-reputation] of myself) trade-record-current
% s% o* L+ t5 E  T7 E. h]
2 c9 t/ k9 {) O6 k" `% hset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' g3 K* n! V5 V7 b, H5 x;;
将此次交易的记录加入到trade-record-one
" z5 b7 D; q, Qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- c5 D+ d: w. ?* Z4 F5 B
let note (item 2 trade-record-current )! l5 b" C  R& X) V
set trade-record-current' }1 M$ l; o4 d% p% A" `
(replace-item 2 trade-record-current (item 3 trade-record-current))
" F4 r9 @# M0 E) o3 y: V
set trade-record-current: ~9 {9 c% A# i! S) o
(replace-item 3 trade-record-current note)
& H/ Q. H* g  t/ O: f* o
3 y) ?* w2 {8 N- i) c1 s, {

/ n+ i' z. ~  g# a: ^ask customer [& Z& m1 |4 O+ a; v
update-local-reputation
7 Y( p3 B0 i: Tset trade-record-current, D( E/ L( e* o; t3 }9 i0 T
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- ?+ }! i/ H$ x  o, _& B: q
]+ ^2 c% O; t! S

, z% c2 w$ e9 U/ Q* O: k6 N

5 [- E: T! u# C0 M+ G: z- nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ b$ D9 }/ {. R  K3 U# @0 U9 _+ K+ d

+ y2 c9 |0 r2 m+ j6 v8 e' Uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! x+ c" R& E4 n' T7 f;;
将此次交易的记录加入到customertrade-record-all+ N: @" W" i* N, S7 P
end
6 S# ^$ H$ A6 w1 S2 }
: F6 Q" e3 e( f+ c. P0 |to update-local-reputation
2 L4 O8 [8 K5 K9 K4 ^set [trade-record-one-len] of myself length [trade-record-one] of myself
/ l! }) z; A* ]) ^2 v. ^" |0 C
/ ]8 y$ D# B& Z9 p2 f2 I& z! ^& z$ G& H0 `  ?& u( V) p
;;if [trade-record-one-len] of myself > 3
& Z# P$ n, j( V
update-neighbor-total
1 h) P9 |# C3 C! n;;
更新邻居节点的数目,在此进行3 _1 e' \0 k- y) q
let i 3) }1 |3 K3 P- x1 ]6 H" |9 h" T6 B
let sum-time 0
# X0 T. M  A( p1 g) Xwhile[i < [trade-record-one-len] of myself]
7 j* O2 \/ s( F9 H[
* [2 h& m. \8 X+ I: U+ v3 l6 ?set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 [" O3 S5 s0 y+ c6 A7 kset i
! s( y2 W5 L0 f9 u' Z( i + 1)

/ C& w$ S) @1 u6 M/ {$ H3 }3 p, Z], l/ m& X% R: Y- \
let j 34 E5 n( O! {6 {+ S1 n
let sum-money 0: \9 B/ u2 u7 ]+ c$ f4 L
while[j < [trade-record-one-len] of myself]% {6 E+ @* @1 X, w( X2 u7 [% i
[
% ^1 {' a) X: n- X5 Gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
2 W5 {9 W& u9 m7 vset j
7 U  v2 h* E3 j% i) F0 Z8 f( j + 1)

( ]! R$ l% A0 O% \: c. ]], @- ^7 e* q, M2 g- A% A4 j2 \& d
let k 3
2 K7 H: H8 M# M6 z- W$ F0 Wlet power 0
& j& v- D& d2 v& q4 ?/ \& Plet local 0
$ p* H' y* z  k% M$ _while [k <[trade-record-one-len] of myself]
$ s/ u% n) a+ V, e[" j: I5 a% N- c/ F
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)   w5 u7 @* \% Y1 v& x
set k (k + 1)5 a* a  x: e+ J9 s7 T( w
]6 y% g0 E% J1 w2 q6 d& ^. {
set [local-reputation] of myself (local)
1 D4 U. M) e8 V2 e' t  e$ i" Iend
) O! k  F8 s* `+ r
$ @* V2 s+ Q/ W" C/ o( Cto update-neighbor-total$ Y, R' D) T/ D, u
( Z, x4 n. ~' i+ v
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& D" ~8 \$ e+ n" ~1 O
, G' `: Q. b- W/ X+ i
) S1 g8 b" M5 U. |
end
6 t6 z# n1 g( u  u+ Y* i+ ^+ g) E1 |
to update-credibility-ijl
& A1 Y  P$ t9 {- J
/ T+ T6 |  r5 M- `;;
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。
3 w) o* |$ _/ [: {5 H5 Glet l 06 x% \6 u& w7 i5 P- B
while[ l < people ]
3 q/ l5 o9 W* a; |+ W6 x( a4 K+ |;;
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2 T6 f, F2 }. |% h5 F% g) I5 Z; c
[
. G' E3 |# K; e! ?; G# l! ]- s6 ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 X7 o0 r2 q  b. a1 @2 k2 K  tif (trade-record-one-j-l-len > 3)$ k  R. Z( c3 t$ I
[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-one2 ~$ ?" a% _( l* D+ N3 S( X1 P
let i 3! J! ]7 N+ [  c4 ]2 i/ c: ?
let sum-time 0% r' G9 c3 [3 Z, @) b
while[i < trade-record-one-len]
5 @3 P: c* X& `! T! j/ o; p[" {& d8 d8 T! }; M
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ f; Q; `& _$ _) s# ~# E9 T  Hset i
3 y" d# Q! `6 N7 \7 n7 d( i + 1)

5 y$ P5 P+ G( X/ _% h( X" |# t  Y! M]7 M$ ^8 R7 V9 H3 T
let credibility-i-j-l 03 m: u& {, U" E0 k/ k. z& F( M6 }
;;i
评价(jjl的评价), l2 P" ~% E7 R9 T0 c
let j 3
8 i6 g( b, ^# N, w# t" N  U5 Olet k 4' G# E& }( z  I2 P8 d
while[j < trade-record-one-len]" o9 W7 Q: |3 C. e( n
[* h, S. h% A# y* d7 y* P: }% ]7 ~  `
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( S% h8 o( w7 P* t! f
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)
7 I# o" C/ P, b. K8 P, t1 vset j/ r" I" o: B3 k, o
( j + 1)
, S" D8 R! C8 i( i& {/ l* E
]
- G' L- f3 n, `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 ))
/ P$ P% a0 w/ n3 Q- f1 d
0 d' w! {9 I9 M7 A
2 t0 c4 j7 J6 u0 u  T/ V
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  }8 e$ ]! P$ c/ j7 j) _;;
及时更新il的评价质量的评价
* `) w, D2 ^$ w9 hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' k: H! o6 i5 h/ v6 V4 [set l (l + 1)2 P! c: I) H1 q! x
]0 H" y" J9 f  H1 i! o
end
0 _7 F4 ~7 ~. z8 X( L8 S  f" w# w2 L: w$ B- o: v+ a& Z5 J
to update-credibility-list2 Y. V3 M* M0 W" H1 N3 O$ ]& D
let i 04 Y- g, G% g6 T
while[i < people]9 m$ U. ~0 {2 c  [: ?- o: y+ ~' P
[
- w0 B: A$ q# @. f; Jlet j 0
) C1 z& t2 g5 Elet note 06 X: q& z7 A% Y! V9 g9 P
let k 0- {0 K) ?/ W' Q5 e+ X5 J0 ?! |
;;
计作出过评价的邻居节点的数目
& ~) {" a6 Y1 i# Zwhile[j < people]" [9 ?9 o2 [+ ?3 y% v3 K% o
[4 X* p5 _5 s. \$ F$ ~
if (item j( [credibility] of turtle (i + 1)) != -1)
) V1 T, E$ v2 ?1 q7 {2 n/ I: W( J8 L0 }  h;;
判断是否给本turtle的评价质量做出过评价的节点
2 ^  B7 k( G% P, y% X* v8 p[set note (note + item j ([credibility]of turtle (i + 1)))) r0 H  T6 {8 T  v2 F6 T
;;*(exp (-(people - 2)))/(people - 2))]
& p# G' G) K& g
set k (k + 1)# @7 b6 g" g6 c2 c# I& ?
]
, M1 r" Y- b* n% s0 ~set j (j + 1)) l1 Y5 w# S* n( B" ]
]0 Y) U( k2 J; s
set note (note *(exp (- (1 / k)))/ k)1 u9 R3 K7 C3 }( ^. \
set credibility-list (replace-item i credibility-list note)
6 L! f* ^' j( Y, K& Gset i (i + 1): x. {/ h2 U: v+ b
]& ~5 S0 |! X3 l4 h( H" A3 {. j+ e
end+ K5 n3 ?( V( u% t7 z' @

$ h- [, G- m6 |5 Q9 d% Tto update-global-reputation-list+ A7 x+ H# I! R! L1 _, Z# R; q
let j 0
8 j2 v) o: X: X* J; f7 t) |* Awhile[j < people]
) S( {& U- [: |( W[
* R7 p" u$ S  V3 Q% llet new 0
, x9 X' C. a' H7 x4 g3 Z1 }5 w;;
暂存新的一个全局声誉
7 a! S" c3 V$ V4 Y: ~* zlet i 0
* D# S( V1 r2 D& J& b" L4 llet sum-money 05 [/ |6 J- ~  J8 [# @
let credibility-money 0! U% A  k7 ~, t+ @' ~
while [i < people]' J+ r1 v6 J" @& a2 x( ]4 |
[7 I- c2 a; F9 L4 k7 s1 {3 {
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 j* w/ C( g7 d+ h- U' Vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& Z" {1 u& |9 k* Sset i (i + 1)
: v! q- `7 N3 P2 g3 a! G. Q]
% P% E0 }& D5 `. [4 n6 l* flet k 03 d2 y# F1 s4 v, p3 c! ~( _
let new1 0
1 H+ Z$ O. R6 X; {5 H: d# S% P! ^9 lwhile [k < people]6 t. R: H$ N9 e) k- y9 I$ r7 \$ G9 B
[: ]! h. I3 m% b# E* }) E
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)6 a$ Y) {2 v2 A
set k (k + 1)
! H6 ^, j7 O1 b, ]4 {* _]' `, N9 T" F* }/ S' z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   |; b- Z$ R  ]8 w$ @, L+ X0 Z
set global-reputation-list (replace-item j global-reputation-list new)7 v4 f9 E% r9 \# \! d( `8 ^9 e
set j (j + 1)
: x) s/ B3 _& t( g) g% v. N]/ K+ |" q6 l0 h5 O+ A, {7 M- p3 e6 @0 X
end
1 ], W2 `( {9 n! q* _9 [/ p/ K8 X$ X( n+ u  Y$ x  ~" G9 p

9 H  J4 w0 d' X4 q+ A
/ T2 K* a! J, o, Pto get-color- j: H+ O# m9 _7 L
6 L9 [0 i% I2 R% g. x
set color blue
& |" Q) S$ Z2 I2 b
end% D7 ~7 N1 U% e# k9 C: F

: E, q# f2 e4 A4 y2 hto poll-class
% U$ i3 @- e, Y8 k) Aend
1 N0 C. I; H3 K4 N, F- t( V8 H3 D( p/ O
to setup-plot11 W# m3 {1 |* a9 o. y% M9 m
7 S- L5 u0 l! E! T  r  A, d
set-current-plot "Trends-of-Local-reputation"
7 b$ ~# |7 M, V& A# }9 e

: [% f" I' |0 Rset-plot-x-range 0 xmax

( [. y" u) S5 S/ j3 p
4 T' Y/ }$ s! i! ~( ?3 pset-plot-y-range 0.0 ymax

% \0 n- R- _, P7 ~$ T0 A( j6 y% ^  Y7 qend3 R; z9 b( P1 g( T- v) ^( [

2 P$ U1 s, `8 Qto setup-plot2
9 G4 P. X. [: l+ v7 `6 _5 E" M8 A5 }
set-current-plot "Trends-of-global-reputation"
, G1 Y! S/ @/ \3 q0 k
" s+ K6 R- G* T/ i4 b
set-plot-x-range 0 xmax
: ~# B6 a' O, I; w
& t& Q) N  |# P# p
set-plot-y-range 0.0 ymax

$ |; e  J  ?; W' g- X& Wend
" R9 d$ p$ f) O+ p
1 A9 Z& A& a0 r& [/ i) H8 [to setup-plot3
5 c; ?7 h1 u5 |9 l
5 s! m6 s/ U0 |set-current-plot "Trends-of-credibility"

9 i0 s& Q7 e& ^8 ]# |- y  ~3 X) ^, D2 R8 F8 j9 j
set-plot-x-range 0 xmax

6 K; `$ Z$ R( g
* ]5 k( z4 r; x% {set-plot-y-range 0.0 ymax

# T" g3 o  A# e, }& o( S4 P- p( ]end
* p* M4 u- k: O# c) O5 v& |1 m- B  j* B
to do-plots
" C: y+ s5 P: I4 j4 i9 fset-current-plot "Trends-of-Local-reputation"
3 e0 ]: i+ S/ G  ~( R8 ~2 {8 J) k0 zset-current-plot-pen "Honest service"
8 o5 G/ j- w3 o+ n( C/ Wend
+ N$ T9 W' n; M4 h% r
% ~! Y" `) W8 D0 L: 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.
7 N! H' Y8 U. L2 Q0 A" u
( R% O  @7 \" t; }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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