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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:
5 M3 a$ N) d/ U4 @5 g7 `6 q9 oto do-business 6 r, }$ ]6 O+ a& o& [& @4 x
rt random 360" t% G! V& ^) T/ o* j9 ^: d: U
fd 1
+ N: a9 W/ `. ? ifelse(other turtles-here != nobody)[
+ N/ w6 B! A  l: P* y* e- G   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.* O- j1 X+ r! p" f  B
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" I6 j0 A: g; U/ Y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; A- U" j; w) U) U' r7 k1 h   set [trade-record-one-len] of self length [trade-record-one] of self
. W+ K% j6 `: r0 U0 j   set trade-record-current( list (timer) (random money-upper-limit))
- F" C6 C3 n' Y- `2 x! q  R' e- q1 D* w, r4 q" x% L
问题的提示如下:5 d- n, Y" Y0 f( {5 m

0 L& v; x- r) v! `6 zerror while turtle 50 running OF in procedure DO-BUSINESS
" q2 n- K( w' k% T  called by procedure GO
: R' U& f/ w. [6 w/ I( |7 o0 S' COF expected input to be a turtle agentset or turtle but got NOBODY instead.
; v5 e' j- d/ C7 t* X$ }
(halted running of go)% t% ^7 F6 f" E+ S/ I" c! p# x6 C

; d' M- w6 u* B$ t/ y0 u6 m# o* g2 r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~~
; m5 {- p. B$ ^/ x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. h8 Y3 @! b" {5 X* v3 I
globals[
2 x: s+ N. V% B+ j/ I! fxmax
" d4 y) h. @! H: Symax
# |5 P2 W. C* w- fglobal-reputation-list9 e# a: v  D6 v) K" o

: M, }* {" a$ K$ P6 m7 I;;
每一个turtle的全局声誉都存在此LIST" f- _# b( V% n8 T& b  N
credibility-list- `# J- _9 y. {, v' ?8 w
;;
每一个turtle的评价可信度
( v, g: U, y/ jhonest-service; P9 H4 C0 |* J
unhonest-service. }3 U+ t2 x' i" A) }; C
oscillation6 t8 }- o8 g, T2 G- u
rand-dynamic
- j* f' S9 e. b$ q1 e$ f; I]4 u' d( E! C9 h! M& j8 [; t* k
0 B7 ^' ~; n. b+ k
turtles-own[: R8 t+ D# x; w9 T
trade-record-all
) H) c. S( m* T;;a list of lists,
trade-record-one组成
; B. [/ x2 d8 P9 dtrade-record-one/ d% A+ }) A8 l, L
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! j4 C. ]' ~8 `4 W8 t% F! {( v% C+ o7 ^+ u- O& e
;;[
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]]/ n2 D) C. E& }
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]
  Y+ d* x' p/ b8 j7 Hcredibility-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list8 k3 B% Q# s; L7 _& K
neighbor-total
, R! O3 J: _6 x( Z7 m;;
记录该turtle的邻居节点的数目4 \2 T8 a* ^% d: O/ t) c2 B
trade-time0 f) D0 w, C1 P' p( c
;;
当前发生交易的turtle的交易时间' J$ }1 j3 m9 a- L
appraise-give
. w: B" _+ R# |;;
当前发生交易时给出的评价" g' I* g, K/ n0 j6 f9 Q
appraise-receive
* N  g3 p5 m5 j( w8 E2 i: k- a0 {;;
当前发生交易时收到的评价# U8 ?, A1 _2 k+ d: e
appraise-time, ?% U( v+ m( ]5 w; @# M! g6 M
;;
当前发生交易时的评价时间
6 x/ i/ M1 \* b" plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉7 g1 F) l* Q1 S/ a# D
trade-times-total; i" |" ~; A$ x# Z
;;
与当前turtle的交易总次数$ ^7 U. {' R$ g- |3 o/ v
trade-money-total  K4 Y5 n* e. J% Z0 l
;;
与当前turtle的交易总金额
+ j" q7 ?; h2 xlocal-reputation
& o8 s! |. c+ B2 zglobal-reputation
1 c. n2 s$ D" acredibility
$ h7 J, w# p6 c- n' m;;
评价可信度,每次交易后都需要更新) \2 I* D% m/ @+ K) Q; g2 c
credibility-all
5 a! b1 X. i( o  @9 N) A;;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- y* U" H+ D% V3 P. {; [# r8 E

& Z! @; l- w- }- N4 h  z;;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# Y) o) {5 R; M/ b8 O
credibility-one
. D: `. n6 z2 m9 n7 v- z;;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' J4 W% v4 M+ t
global-proportion
3 B; K; F8 `: p7 Q0 O. {* Tcustomer2 b/ W1 f" S5 n0 G$ J, z9 r
customer-no
: A# ]0 d, G1 F. J3 B3 e8 d* etrust-ok
& v5 b5 J, S/ Z' b) T9 {+ [trade-record-one-len;;trade-record-one的长度
7 G4 b1 H: R' w  K' X3 T]2 N( u3 h) @6 _
1 {/ q' @: M& b5 k" t9 {1 K
;;setup procedure
! t5 x7 p6 l9 w& P$ z- i
9 V" f/ `6 Z' c6 q# R, M5 X' Xto setup3 i2 u1 r7 M6 m6 q
1 |& H" _2 L/ X. |- u1 u9 y8 z" l
ca
7 l. R$ O/ Z/ T2 p  O
) ?7 `3 W  ?; {0 h, m
initialize-settings

5 q/ j1 D+ o& {& J: R3 ]
- D9 P/ R' s, [6 V$ _crt people [setup-turtles]
9 [% q* `' Z6 F" `7 ~5 ^

; W% Q+ o: v4 D# \! L+ c/ z/ [reset-timer
; I# i& I7 d- b

8 @2 z0 v. R/ z5 p8 q/ y4 R' `poll-class

  O8 a: N$ _0 g0 V6 |
- d4 U' F! c$ }& h9 W1 Tsetup-plots
% ]4 ]1 B7 I" h5 q4 ]
, r  x+ K9 X# h6 \
do-plots

; [( i$ E) Q( z+ q6 E9 ~end
) V* A: B6 g# g0 f% n1 u. b' [
4 D6 g: l/ n5 x  P$ ~, u, \to initialize-settings
- R' Q  m- v3 o$ m1 z
1 X5 S/ x/ v4 j. c) Uset global-reputation-list []

+ v3 ]9 ^3 [4 j8 }7 w& T
7 [+ E: y; [# {3 W. Q) jset credibility-list n-values people [0.5]

5 G3 F' g( ?9 H9 A, ]" f7 R, |6 \" ]9 Y7 T7 d0 D9 b& k8 t
set honest-service 0
6 X, J6 {5 k# ^& l

+ J* B8 Y. t8 ?( Q6 B3 y% Eset unhonest-service 0

' C5 L" S, _( k- h0 H) B2 I' _0 D9 [
# p; q. T) }" v  }set oscillation 0

( e4 y7 X' u  Z5 s- C
7 w- W0 W- {& [( jset rand-dynamic 0
1 I0 ~* J7 g- H
end
# C, q: Z1 f. `1 V" b5 X- \# g
8 D" J4 U5 f2 Q2 v  ~0 Mto setup-turtles 0 z+ N# M5 d- a* x9 P& f
set shape "person"9 S7 C8 q" @$ s  G5 ?& d( Y/ B
setxy random-xcor random-ycor8 }* I1 C9 R5 \" Q' B9 d
set trade-record-one []
. d9 `- e$ F. }4 p4 V, b% i* j$ Z+ s3 ]
9 d/ J0 |- m5 X$ u% \1 w8 r0 a
set trade-record-all n-values people [(list (? + 1) 0 0)] 3 N. s" f- u8 h( Y8 Y0 Y
9 A) k. F; K8 {7 ]
set trade-record-current []* r4 \2 k" Y! Z) i+ m7 C
set credibility-receive []
3 B% T( W# Q, u' lset local-reputation 0.5' m+ i' ~" G0 z0 q! _
set neighbor-total 0
* U" [7 u# ^) q+ nset trade-times-total 0
. w3 S# g7 {8 ]& o2 p: A: K/ Aset trade-money-total 0
3 n+ V! g3 N; C4 b/ sset customer nobody
/ z6 H* D/ C% P; pset credibility-all n-values people [creat-credibility]
5 I( Q$ O  p" ~1 s1 P) @( Lset credibility n-values people [-1]
! B  l6 U! O6 M; r4 `; e* `get-color* N9 R9 Z& C4 r# Y. w
" b$ s, k  m+ S% x. t( }2 E* @: [' t
end5 d" u* G3 F1 t# e
# J# B% ~* u, b8 U: }$ m
to-report creat-credibility
5 z) ^# |. J% sreport n-values people [0.5]
1 [: \2 }8 x9 ~/ B. ]end2 Q( o1 G/ A; u* {0 [
6 h. z: t# z7 V) g: _; o" L
to setup-plots
# A- t# W2 O! b; l& x$ I  u; g  n: s* Y" z0 \
set xmax 30
; g) O' d, _% _1 T% M
$ a; \5 X$ P7 Y, ]/ d
set ymax 1.0
  B+ a/ G- f  O

, m1 }( z0 A# k% t, pclear-all-plots

. q4 W. r: O) @0 y  a0 n. o: ?
. E. g' F( }1 E% nsetup-plot1

0 N* B  p: F8 A/ U% t9 W5 F- q3 E. L" M1 {/ d9 n7 i
setup-plot2
4 [$ g; |. A/ z( ]$ i9 ^

- g: r, Z0 S+ @* ysetup-plot3

- O# M. e+ w: l3 q4 d! tend
7 x, Q( {$ O5 E" D9 S- F! N* I! ^) E0 L3 W4 ~
;;run time procedures
' Y. C8 s1 {- V. m' R; m- d2 F
) q- f* G, _- p# x1 R) Cto go9 i' g3 g+ E8 K0 x% p
% ~8 M& U! f6 a% A8 d$ l4 f
ask turtles [do-business]
4 r; o: K; n: X: j
end# X7 P5 H+ z  _4 y) S

4 W& g  P3 G  _to do-business ) [  Q3 R8 O& b
! |5 l5 S$ J( Q

+ p  {1 e- T  b! U: art random 360

6 D5 F& C% F. }% _* p+ i# P
& \' {, `# J4 y5 \fd 1
# ~8 ?9 F  X2 x" X2 ^8 D
  C2 y( Z3 p  u. e3 a5 q
ifelse(other turtles-here != nobody)[
' Q7 o& S2 B  ?& h+ \

" x* a# H+ o" N' |3 Oset customer one-of other turtles-here

5 P6 q9 i  M; {+ l# L- _4 G/ M2 U
' c6 h) M' E% v. X;; set [customer] of customer myself
  V* E; ?: Z  Z. c3 X# A- g, f
7 _; E* J" T6 m$ Q7 u$ r) K0 r
set [trade-record-one] of self item (([who] of customer) - 1)5 z- l, n. L* l/ N+ W
[trade-record-all]of self
2 ~, D# x# m) }- O- U5 e/ M6 R8 J;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! ?# p8 g2 {; W. j0 S: Z$ }# c9 {4 i! _1 e8 Q+ Q  F; v
set [trade-record-one] of customer item (([who] of self) - 1)
, F/ v" Z. l7 D  A3 @6 p[trade-record-all]of customer
' {& m/ P$ X0 b6 {

, n7 N* o& U9 j: Pset [trade-record-one-len] of self length [trade-record-one] of self

+ k- t) L, M, ^$ [2 a7 H4 O' a2 D1 L# R) G+ B1 p$ L+ A" |
set trade-record-current( list (timer) (random money-upper-limit))

/ J# S2 l! u! T; j* k8 X: q
4 d' j7 y) }% |' Q8 X2 E* a6 Yask self [do-trust]) t6 a" r  X# x/ \" v0 w5 s: p
;;
先求ij的信任度
, B3 A3 Z+ `2 F0 u; n, l5 t" Z5 ^; m0 `/ b2 ]% ?
if ([trust-ok] of self)8 ?9 c/ s: e* r2 Z4 S8 u
;;
根据ij的信任度来决定是否与j进行交易[
& F% c$ o1 h' Q2 K$ xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  `7 N9 ^. E: F3 [5 u* X( Y" W1 ~2 d. ~6 B, o5 t; ~
[
# i* l7 r2 L# O
: e, w% m6 W! z+ w* i& T) j% }1 _
do-trade

0 t( @) Z$ t; B: u, `
2 W0 H5 b) o( P' f4 M5 mupdate-credibility-ijl
. n2 l, L* r- c) \# P$ Q5 A

2 U, T0 y3 Q- h9 B* x' }update-credibility-list9 A% o+ ^/ L5 @
4 R( ~" |9 n- V" H: x# a& W
8 ^4 ~* N1 S- y1 `
update-global-reputation-list
: |# d& {+ I. v

8 o3 w# R% k2 \- y. epoll-class
# I' s( q+ n& H# \: Y- a8 L
% D0 x0 T. h- m2 M! W
get-color

% }3 y0 t. \& Y" x$ ^$ _
; s2 Q- K' X/ [# l]]" {0 e) b# q8 i8 d8 c; F$ h+ L

+ v( r& n" ~( Q* H$ j3 G. j;;
如果所得的信任度满足条件,则进行交易
& W, {* o% K/ |0 U9 L: J* ]$ w
2 G8 z$ i7 f8 {, A+ O. F/ S[
6 r8 C  W. b! }0 u  l
6 T3 |& f( h+ e
rt random 360

8 c- C: @) r  v% V9 `
4 q' T; i; x- w& O  p' }  o) pfd 1

. k) H; U- [- Q9 {1 L9 B
9 Z) Q- o$ f0 `]

6 v. \5 e0 P5 y" E! m" r8 L, F) W9 j1 B% f9 R# V5 R  @% _5 C
end

+ d1 ^( x  D9 Z- @# `% w; V; [- U* D* j% a
to do-trust
  W1 z: O8 r0 J& P& I" j8 `set trust-ok False
0 D* F. y0 w  M" y+ L* H2 G7 E
7 b8 b& V0 @8 \" `8 ^. t

# X: u( f: B: s2 ]5 ?let max-trade-times 0
- L3 M! ?. U1 m! \8 Mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  C3 F6 F! h; F! B4 {! Plet max-trade-money 0
2 N* A, I6 W5 l4 I4 y9 rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 Y. u$ w7 ^3 [. a2 V, elet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 S! a4 g( u) Z, y

9 ^) D3 t6 y% @) t+ j
; S3 J$ V0 t+ i' K1 y
get-global-proportion+ ~' D, |# D7 l: p! Z; q: J. X
let trust-value: M( a9 ]: Y  F# r6 C& F
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)

: U  ]) i1 @& }. N4 zif(trust-value > trade-trust-value)
1 V/ Y! n$ v% ?- w4 Q  L[set trust-ok true]
6 d( R% L  N7 \0 V0 [: vend# z' \0 L- @$ x
3 P1 N: u9 _3 d. ?& y
to get-global-proportion4 i  q/ d' E( n+ S$ J, Z  G
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* z  d; g; v! n: W4 x  a
[set global-proportion 0]7 T! c" g# W; C. n' v4 Q# @0 Q
[let i 0
' F& ]4 b' O0 @let sum-money 0
$ u  E, u  n6 t: o; o7 z4 ?7 bwhile[ i < people]
# S7 }) Y0 e6 d6 l. j1 l7 R; k+ B[: W2 c1 T, ]) f  B8 M4 Y
if( length (item i4 }. @# C' R' e; ~% p  n9 q
[trade-record-all] of customer) > 3 )
7 c  y4 W  M! I. V
[
+ k9 ~- c  [+ x) B* Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, {+ c8 P! h$ V! x! \9 `, e]7 ~' G+ S, h' ]; _4 i( y
]
: _- y6 P3 s6 W! B( qlet j 0
! C! G  \- Y; F& D9 M& C# Rlet note 0
1 K0 ?1 I. i7 ]* ^4 awhile[ j < people]
( E( A7 g+ K7 V: p( X[) I3 q, u0 V) V- U/ R
if( length (item i
# S1 v3 S8 k: F  X4 m: ], ]( i[trade-record-all] of customer) > 3 )

" n: h% K3 u/ f* V/ |4 y6 L[
2 X- \, m: w* O' Pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 R) I0 ~5 k5 E" ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], g; ^  }& G8 |* j6 s- I
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ g$ U# D; j5 v' ^+ K% B1 q]
6 v2 E4 k+ h8 I0 w! U& n; D0 p]/ w- F* N  r9 E# Y3 E/ e6 x3 G6 X5 f
set global-proportion note
( ?! ~8 ~4 G# O]* K0 |, C6 Y( b0 b4 n8 A% c* {" [
end
0 @) S# Y, r, \9 C" Z
' X/ m1 ^- d1 ?- R8 lto do-trade
4 M8 ?9 p* T% q;;
这个过程实际上是给双方作出评价的过程
6 B: A/ `1 l7 H- ]( C/ Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! h& w( L; w5 S" cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 f  s1 z4 t8 H" mset trade-record-current lput(timer) trade-record-current
8 A' C& d6 X; M1 X( B;;
评价时间& }% ]( e8 U6 @: ~
ask myself [
. Y* R9 O" M  q8 I7 M1 C9 l6 Lupdate-local-reputation
- I  m  P5 [' w3 V: M. e* nset trade-record-current lput([local-reputation] of myself) trade-record-current) I( b# T5 V  J9 z: Q. G
]& N) \  b7 |+ r; v8 {( D3 m% O
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# a/ |/ U3 L' u1 D% D, a2 \. V5 h5 N;;
将此次交易的记录加入到trade-record-one! r% u+ U- U& U; N
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  R) X, @8 S% z/ alet note (item 2 trade-record-current )
$ ~2 N# A6 L. v; W6 ]+ F% Qset trade-record-current6 {5 K2 A( b9 i. G* @
(replace-item 2 trade-record-current (item 3 trade-record-current))

( E4 P& t' J2 U9 r* kset trade-record-current' K, _6 n$ x. s
(replace-item 3 trade-record-current note)
; U- u5 P/ K: B! F; _% ~  u" v9 u9 C
8 }8 ^8 b: Z3 C6 E& I) V

! M5 }) i% F) r0 _; ^6 uask customer [6 \; ]- B3 h/ S/ h, m- A- l3 }
update-local-reputation6 i% t7 B7 g" F
set trade-record-current6 d% ?2 }* j$ @. R8 c
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 W  A, E8 q; K( B4 i1 J: V' q]; U, ^! b. q/ v

- [- L6 d" l: @1 d9 W, s' R2 c
) [  }' t) |' i8 }8 m) L: D: g
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' [" k2 P& `( m* [
! f( d6 j- W6 B% ]3 g  G7 h' e
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% Q9 q9 w- x6 H) a' t# Y;;
将此次交易的记录加入到customertrade-record-all, G" s& U, R9 Z. B  }
end6 a9 i: l8 Y5 Z/ B  n
$ K- h$ V) W. _* M* H! z* {) M
to update-local-reputation: M: q! N8 x/ c7 u2 U3 d% g% K
set [trade-record-one-len] of myself length [trade-record-one] of myself
; }' a* l9 J6 r/ [7 @3 L9 |" @# T% D! [) W- @/ S/ s! ~; A

0 Y5 w7 y( C' ~;;if [trade-record-one-len] of myself > 3
/ g: w5 ~, [& a) s7 P0 j% V
update-neighbor-total" Z" b9 T0 {& F" j, e2 f
;;
更新邻居节点的数目,在此进行
" C5 Q" Q( q% {8 [+ Z8 |0 m/ z: h8 Rlet i 32 S! G2 f4 T8 w0 X
let sum-time 0. r0 \+ O' q6 P: y1 m9 D6 }/ I1 _
while[i < [trade-record-one-len] of myself]
. X, D' K/ h( ?. D* f9 V0 R9 K) S2 _[
' B/ Z- p% J3 d" s1 r+ ?$ d  I" Cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& P8 M) l2 O/ z  H' fset i+ S9 Z' v# G& Z0 O& W
( i + 1)

1 m8 y+ A; F2 E+ E8 A]% f# z! ]$ E; Q/ M/ V+ Q! E
let j 3
: A$ l# W) `6 Y- rlet sum-money 0" y5 ?* h0 T' x' T% K1 w2 F
while[j < [trade-record-one-len] of myself]4 I  c+ ~6 Y2 ?* _
[
1 U* Q9 l4 l- Z6 ^/ 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)0 w9 L& x! C0 f$ A5 ~' ~' i) Z
set j+ }; d' \* d+ v# e; p
( j + 1)
! Y4 g$ I8 u! [/ r2 v2 S& u
]
. @5 q4 E3 y' F; s3 J0 G- z# Rlet k 3/ ~. s0 E6 a" H7 |
let power 0
3 ~, Z" W% \* M2 A. y: K( tlet local 0
3 L/ S/ y( Z6 N7 y5 Qwhile [k <[trade-record-one-len] of myself]
, d$ G, Y8 ]4 Y. E) V( w[
# p" w" z' ^8 \7 jset 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)
, |' d: P$ M; y% mset k (k + 1)
( b6 C+ D3 [4 G+ _+ c]* D) H# A' H9 @! \- w
set [local-reputation] of myself (local)7 h0 i1 q2 R8 s; Q4 p- i' ^# U* Z
end
& F% q: s! f& O3 ?0 u( W, @8 k0 _9 a, f' r1 l4 d) m& X
to update-neighbor-total+ q6 p6 T/ F# I& Q1 }+ O

1 d! C4 v- B; K. X/ @2 r; wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 X7 \( z6 E9 Y5 v8 q

: T9 X. t  A2 v+ ]" L5 F. N% J
1 S& d9 U, q% U+ H9 E8 o
end
& l! x9 ^- e- D2 B+ j- s# `2 X1 m0 [, B
to update-credibility-ijl % K5 Z" S6 `5 e% X: [; f4 t

  j+ H6 M8 m! w. B# I;;
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。9 q6 S- ~- E$ `; g: \' \( l6 `7 ?
let l 0
+ W" B6 B! D+ z0 ?7 uwhile[ l < people ]% ~9 s8 T) Q$ D
;;
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
! U9 F8 K" F# j, f[
4 T# x/ T$ r# s+ N8 Blet trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 K2 B# r' U+ g9 \1 g" |
if (trade-record-one-j-l-len > 3)
5 B, b5 d4 @" ?8 {! H[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
6 y1 r& b1 ~, X7 ilet i 3
" a- b3 x# v. e. Tlet sum-time 0
* R1 X  v) ~$ F; owhile[i < trade-record-one-len]% J8 V: E3 D# H
[
7 S" u. V& s: Y5 b: tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( e- L" a1 J2 N0 Y% \. @+ d
set i! c4 G6 d% @* m5 u+ ~
( i + 1)
" {$ ~/ x; e, h/ L: d1 W
]
& M- j9 X$ }, Q. w( M0 Ilet credibility-i-j-l 0
* I. z' b: b- Z1 @/ E# E2 Q$ Z;;i
评价(jjl的评价)' ]; q* k" z5 Q% w! Q
let j 3
. z, [. B, D! j7 M. Dlet k 4
1 w& _8 P  ?: \8 t# Bwhile[j < trade-record-one-len]
. Y5 _7 z, k( y; d' q$ g& O- [. T# `[
9 O" g1 Q" U, Z6 q* W( J7 B' 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" Y' b  x  ^0 X% @
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). n3 i* g& r( `  ?; O' l& m' [9 m
set j" m' p  ^% p. @8 U& q% G
( j + 1)

6 f# t) J' `0 t" h+ W% q7 B# L]
0 p. y/ H& V: }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 ))$ Y4 Q& K# p3 s- Q" l- V- U

& G% `: U) M6 Y2 r* w
& X' e# r+ Z5 }( \7 g% k0 W2 g# P7 }
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ e: x  f8 V  j/ P# h+ }: o;;
及时更新il的评价质量的评价
: a+ N5 |' @/ R4 @4 v# Q, Hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ i2 H7 |; A, i. X3 r- u6 Hset l (l + 1)/ B$ ]$ [6 F8 ?% s0 l- F6 W6 s
]3 B( f: {# L) P+ ^4 }+ I
end, [% l1 U) W4 ^& D: C% M
' o8 H3 |. j- ^- s
to update-credibility-list
0 O- Y5 J' \( d' ]let i 0% ]5 q, q1 y+ j& Z
while[i < people]
- X  R5 Q( b+ {& t7 u[
5 v  I$ B. m- s1 C! p0 glet j 0& z2 [* {! a* f2 b4 k' D
let note 0# U0 g4 U9 K. u
let k 0$ _+ }. c+ H" \- {( P
;;
计作出过评价的邻居节点的数目
4 L+ c3 u: ~, q$ p8 @0 o! x" dwhile[j < people]
6 E6 C; @, ^! }) x  D$ L: n, c, {, n[- ]& n  ^7 K9 f, ]8 V( ~+ Y
if (item j( [credibility] of turtle (i + 1)) != -1)
% [5 O/ u& l+ Z2 f4 S/ e, h3 D;;
判断是否给本turtle的评价质量做出过评价的节点
1 e7 H( D$ {' d' v6 z0 ?[set note (note + item j ([credibility]of turtle (i + 1)))9 Y9 o) m' H1 e- l! J& F
;;*(exp (-(people - 2)))/(people - 2))]

' e2 w7 j* S. sset k (k + 1)
' \1 g8 ]0 d9 F/ u9 o5 c0 A* R]+ p& Q9 L! \. a
set j (j + 1)
0 U3 B- I) O: Q9 l  t# w; f: k]6 j' j: E% a" }: R) N! t
set note (note *(exp (- (1 / k)))/ k)
: f" _3 N" ?2 u  Aset credibility-list (replace-item i credibility-list note)
# u0 U3 Q. U/ `8 |; tset i (i + 1)) o- E. ?& p: a% v- i; t' z. }4 e6 @
]1 C% d/ H- a- e, i5 z
end
& e1 Q, Q/ K. A; y' W0 G  Y% V* k; D$ f) k6 U3 r6 x
to update-global-reputation-list
& w3 T& k* c0 ilet j 0: j/ R( U' X- g6 z1 i: h  L" G
while[j < people]& `. C% o+ n* O' A! M9 D0 s8 N. F, n
[
( P# e2 z2 G5 Y5 A9 C/ t: U8 plet new 0* j/ D4 C! W+ _, B/ }# q2 y
;;
暂存新的一个全局声誉
8 _4 _: z; a  ?; ~let i 0/ O1 w3 G/ x; [  B
let sum-money 0
! }  O2 b: r; d+ x$ F( `! }let credibility-money 02 h# e* Q+ L! [, M' G
while [i < people]
# q, l7 }7 d$ L[/ l, Z& E6 U7 ]/ ?
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 _; D8 m. g) W( N2 w/ L& _/ h: Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 m" [; f# C! W2 d6 p  W
set i (i + 1)
  Y% J( |* T: N6 d5 @+ T]
' d. b5 \0 q) U% u1 V( k* ulet k 05 d6 l; y* Q5 P( @5 `
let new1 09 O# n1 ], S" M' J9 U+ I
while [k < people]
# f+ i2 P! P! I: q[: J0 U! X& h' C1 m* S
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)* z( r" h, w5 J1 w* B6 U# J( v
set k (k + 1)9 W3 l/ Z4 `, S# o+ N% z3 a
]
  i" c# s) `. _( y8 E; Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' l* o2 L, f9 V2 C3 \
set global-reputation-list (replace-item j global-reputation-list new), X8 g* _  w% W5 p7 H) _9 V) D
set j (j + 1)* l' b# K3 v' }- Z3 D+ i  {1 }3 A( H
]! V$ V+ M  q* d: ~" U# N! m9 x3 ]
end) `- m# f( \3 C# J# y1 w

$ Y& J- U" m" j# a/ I2 L7 `! H5 H' |
; T3 J( `' w' F" t) P+ P" I
to get-color  F8 F0 V4 x9 l6 J2 \

4 D. R. U6 T) V1 X" {: K5 M% Kset color blue
8 g8 B9 D1 S! e9 N# d' k. y
end4 B+ l- u) C7 a
2 _# t3 p3 Y7 K% S
to poll-class
7 h5 a5 }9 w3 U1 Nend4 ~! V( K" I3 B3 `' `# A7 \! A  Q

, Q4 T( F% P/ J' E7 f  @to setup-plot1) W, ?# X' {/ h3 F1 O( A5 f

  I& M# }1 K" J+ a9 Uset-current-plot "Trends-of-Local-reputation"
8 o8 Z" f; h$ {3 x9 B7 g

9 W3 T: N- d) l$ ~& |" ?- _. u6 qset-plot-x-range 0 xmax
2 c- N% b2 Q+ \6 O  W2 G

0 o' f0 F1 a1 |2 U/ B& F9 iset-plot-y-range 0.0 ymax
: p# L4 D* U& M1 d, {9 W- m
end
! G; E: O/ d6 A- X. M5 [5 N# k& _7 `2 B$ }8 J1 b4 T6 w, v1 z7 ~: D( d
to setup-plot2/ ]* L# ~- R: [  e
* L7 K+ q9 p7 Y0 X
set-current-plot "Trends-of-global-reputation"
" M/ V1 y1 d& m; q# O# v

, w" {, w, l/ G. r$ ^set-plot-x-range 0 xmax

4 s4 J( ^4 q3 F  M: J% f  w, O7 j- g& f+ {. X: `
set-plot-y-range 0.0 ymax

. ^+ y; C4 K" M5 Zend
. W, A1 x: c! K6 H+ d
4 a6 ]6 ]% ~5 t9 Rto setup-plot33 x7 I; s9 U" b
4 Y& X2 M9 j% Y8 k- c( d
set-current-plot "Trends-of-credibility"

9 J* r# Y. ^/ z) D9 l' A
) {) v' U& _  N/ Yset-plot-x-range 0 xmax

* X" k5 {: y0 U1 i% `& c0 b. j: {/ Q: A) Y/ k" q7 P
set-plot-y-range 0.0 ymax
4 e+ q4 r! x: a6 X! C& a# S- I
end) V, H2 v& j9 J4 W; H5 Z5 @* i6 H0 K

+ X- K8 g8 l, ?/ V; U/ R+ dto do-plots. Q3 U$ C5 Q2 l  \3 `) ?
set-current-plot "Trends-of-Local-reputation"
. h3 E$ m1 g/ F( \set-current-plot-pen "Honest service"
* \4 E- k% e8 t) \end+ N4 R8 H8 U9 P8 }9 Z

" z2 M- P  l3 \6 e4 I[ 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.8 A/ I0 X% P) |) l3 T3 H
/ P' w+ P: [! [& ?
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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