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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 H! R. G% I" O) D
to do-business   i( s( N* L% e1 F$ S* Z+ C3 N
rt random 360& |( x& c7 S9 q9 l0 C# u1 J3 k
fd 1
5 f, z* W9 F3 `) y  Y ifelse(other turtles-here != nobody)[' N( q  r5 N7 b( [8 d
   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.8 L: f0 F9 C" M& _
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' Y* S) E9 m2 [. [+ _
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& [/ u1 q" ?. p; ^5 ], F
   set [trade-record-one-len] of self length [trade-record-one] of self; @" Q- x) @; s3 G$ ~" Y
   set trade-record-current( list (timer) (random money-upper-limit))% d0 M( p1 w& O8 ~
+ g. U- B0 Z0 \% y
问题的提示如下:
. H5 R/ G, |/ d6 t' p8 E6 ^. a' f, Q5 C( H
error while turtle 50 running OF in procedure DO-BUSINESS
/ f' N8 X6 ~2 n. W: j6 V  called by procedure GO) @$ b( p7 k8 [9 O4 H
OF expected input to be a turtle agentset or turtle but got NOBODY instead.- Y; ~$ y  n' F9 w6 I' Z0 n
(halted running of go)
/ B" U6 w. m* d/ v
6 g* E0 e7 u! A/ x! I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~~
6 k% n9 U' Q+ |/ j* V( B8 R$ U3 I, _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
7 A8 G; p. h( Nglobals[( u; }; o$ T* |. p
xmax
% s# M4 g. ?" k6 [' jymax' i' g' ^9 X. @; W4 @& b
global-reputation-list
0 \9 R+ A: F  _- g3 G' W) O$ d# N4 B- t& U$ O0 K
;;
每一个turtle的全局声誉都存在此LIST
# n. `+ a' o! ^. `credibility-list* g8 R& c6 U" P  v
;;
每一个turtle的评价可信度. O, S& T: K! L/ Q
honest-service3 E6 o. w3 o$ z- Q& v+ m: U" h
unhonest-service
* _- x! E: X4 ^0 H6 Hoscillation+ W2 K( p% A; y9 }  ~* C, R' d- A
rand-dynamic3 ?, G, h6 w, u
]4 J* [' R! A6 q; y, A, p
5 J( k0 `$ J3 \/ l, L
turtles-own[' o. Q" h" u# z: Q
trade-record-all
  c3 B8 p0 k5 u+ K% o0 w;;a list of lists,
trade-record-one组成
7 r: K, W7 V% l6 `3 v/ k# Jtrade-record-one/ G" R+ ^6 t. f- T7 @' u7 w
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( X$ B% `( i. M9 @

3 d: |% h  j1 R;;[
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]]
/ r) w# q8 o) y3 M# E% etrade-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]
! G7 w6 U% Y1 g4 _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list7 i- O( V2 s' h
neighbor-total
) e$ Q( i! ?# N2 R3 K3 L;;
记录该turtle的邻居节点的数目
9 F! C5 n) M. o1 c7 ]7 y- Ctrade-time' a7 U6 |7 @) c  u: G% z& Q2 U0 M3 d
;;
当前发生交易的turtle的交易时间( p# h+ x# F! I) S3 u2 R
appraise-give
- w( x. j: v+ n4 ]& R+ @. o, e;;
当前发生交易时给出的评价- N6 D4 b& u( z: T
appraise-receive
! d. m3 _1 D, \;;
当前发生交易时收到的评价
7 u1 U2 w8 g5 `5 s2 \( pappraise-time; X7 I5 r, u; u9 i3 r# _2 r
;;
当前发生交易时的评价时间
3 p$ h& G' h1 W& Tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 Y* h! `0 E' b0 C. V! w: f1 d( [! z, Z3 ]trade-times-total4 J! a/ ]3 N; u8 z
;;
与当前turtle的交易总次数. p( h! F, `, Q' C4 f! B
trade-money-total# W  A# S0 h2 ^; R  m$ C5 H
;;
与当前turtle的交易总金额% M8 V1 Q4 x1 w: U
local-reputation' e) M# ?' l) E& S6 L
global-reputation% ]- U' _% S) p$ p2 }/ m4 g+ r; a
credibility
/ T9 |' P8 b* m8 e;;
评价可信度,每次交易后都需要更新
8 G- A) [  v/ k4 Y# g8 T1 Kcredibility-all
0 w, V  K; x- A' ^7 X$ 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% X9 D- D0 z& @% Y

7 Y; v- \4 o! m6 o8 k  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
% w) A1 a8 Z% T8 A1 ?' w. ucredibility-one& h/ c  V) U0 L& a+ I9 g/ V& U
;;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
; }; s) u( A* E. C6 Z: Cglobal-proportion1 g, N+ S# ^) Z6 G
customer# m* `5 X9 s0 h: x8 a4 {- t; ^, T
customer-no
' N/ G/ I7 X- k+ V) Q$ etrust-ok# X& h) t4 @9 D5 Q2 s
trade-record-one-len;;trade-record-one的长度
* @. H  G" B0 q6 Z]
2 _: ^) x6 p( A
4 Z6 L) u% t2 c. n/ P' j;;setup procedure
  [* y5 W: Y9 k- b$ M3 p. w; q9 |' R: |9 n2 a$ W7 C! C
to setup. v6 z# D  n* o; @% J" r7 X

" h& K  z! u6 J9 c; W" Xca
' e0 J7 b8 q! N  _3 o1 C) x# B# D
& l" \( w0 x9 |9 n- t
initialize-settings
( s- N/ F% Y7 W
2 j9 ~& z, _& M1 }) u1 c
crt people [setup-turtles]

9 X/ y& K, W6 J; Y
) y$ S& s, q5 }/ T3 Y/ ]* k" p: {reset-timer

" |3 w# i3 D4 J. D6 K# v
1 i. T5 \- p: u+ e5 i. B$ a" j4 fpoll-class
$ D9 A+ [: a3 z
. Q) e1 J- Q, O# U
setup-plots
3 _- N$ \3 q" A& o7 q# j% G
% R! G4 P" L* X8 Q, v
do-plots
2 m# Z; h% f7 D6 m2 A3 v
end
' F5 P. n1 y& |0 f9 i* J9 ]' G9 t  _3 s$ V1 @& F/ ~
to initialize-settings
. N- V5 U5 ^7 z7 V  G6 u4 X; i3 a7 c) v* z- M! ^! H* d) D
set global-reputation-list []

9 T! ^' [! l, K8 ]) Y+ ~* Y% Q6 U7 b$ q% _4 V! F3 P! |: W
set credibility-list n-values people [0.5]
' _) w6 ~  t! w! D
) I$ F7 q$ `- Y+ Z
set honest-service 0
% z' ?7 X! X8 F, x5 i( [* C$ Y' T

2 `. a! i& e, ~! l3 gset unhonest-service 0

/ }2 u) }$ n! e" V! r& Z+ c& Y
8 U3 ?% f( H" C3 Y1 E7 {* e1 r0 Yset oscillation 0
& w+ v" H- A) }" l% T
) z) P, c7 d, O# I& e# T- [
set rand-dynamic 0
" K, s* x% v9 @  ~! P
end' u. E% q' G, w+ x3 M+ h

' R2 u  t) ?7 |( x5 Y! Jto setup-turtles
$ n1 y' v) l0 @' e4 e( Q+ X9 qset shape "person"
) X1 d* i" U; J+ }setxy random-xcor random-ycor
8 i5 x3 h) k2 S) v4 j6 d0 r9 Pset trade-record-one []3 ]( _: J5 l% U+ C4 M
* m. z- V7 |( n* B& u
set trade-record-all n-values people [(list (? + 1) 0 0)] ! f  P& r# r, j7 S

" u2 I% M' [: F9 T. d5 eset trade-record-current []/ C6 |/ q+ n0 j8 t  p% r
set credibility-receive [], M2 _/ c6 C9 w
set local-reputation 0.50 |$ z9 R6 K: M) V6 K
set neighbor-total 0% w: E! J1 |- J, E$ }
set trade-times-total 0# B. D$ N, @2 R+ k" C. v$ a) G  ]
set trade-money-total 05 _4 Y$ u7 }; k8 n
set customer nobody
* [0 P/ Y. r1 V2 Z1 ?. xset credibility-all n-values people [creat-credibility]6 }& g4 Q: I$ `' z  ^5 M: J7 L
set credibility n-values people [-1]
8 ]9 k6 t/ |' d  {7 |, @3 `3 Rget-color9 G, K9 P! s2 k- B& p+ J8 T
! a  B1 A6 S. q$ T' f: V6 T6 k& i
end
" [6 I  L% |3 a, O8 `+ m, x4 U: T
& S5 \/ J& I- [: Sto-report creat-credibility
! i  m, {- u" j( ereport n-values people [0.5]- e  `; S8 D9 X6 s
end9 w+ w3 q; w$ R* k4 P' q
  `4 o1 l8 p0 B* T3 e5 W3 _* K
to setup-plots
% _5 d, [' y  c* h$ }& T8 M- P% L' S5 l4 b! t3 V. t- ~
set xmax 30

# G) O8 N# F) a3 v$ Q3 w. C8 A2 @$ M& i' D
set ymax 1.0
. F  C  K- B  G0 s- ^* o, x; X

' L! e, e% r( m& Q4 ~6 T* Sclear-all-plots

, G5 u9 S  x7 K- _9 w0 f* R
% k" ^# r" Z5 N' ?( z' M% wsetup-plot1
6 r: a2 R& V* k$ E' t4 l$ E
- Q- R( o' v% B# a* j" M& f
setup-plot2
  R& s3 `8 E8 E" ?

0 }! ~  a9 z% a1 {* Asetup-plot3

& A9 W' _) t& b- r# Y- l- K1 vend
+ ]5 q5 R8 E7 P" D9 u% J
* C# U7 i- f7 Y1 q# S; q9 H2 X1 }3 d7 B4 \;;run time procedures# ~( K0 }) E! q

% d% b; f& |1 lto go$ j# T2 f3 t8 O& K1 T% r5 V
8 ~* v6 M) D$ y6 X8 n+ s
ask turtles [do-business]

3 d1 E$ S  Z9 u3 j& F3 Iend& H+ z* |$ K4 m0 y) r
0 k8 z! r9 Y2 `9 C* B9 v
to do-business ; e( ~% {7 D( l1 U4 v+ I- q
4 y9 c% h: Q* x' I' l* [8 Q
* h% I% t9 ~# @' O) K( A
rt random 360

* x& S. ~) h' V0 p* U* b6 A
% W/ A% |7 l$ ^. F. g7 rfd 1
4 H+ l" s- m4 t' j
" @& q- m  O, `% X: ]9 O0 D
ifelse(other turtles-here != nobody)[

. \. A, \% i4 B1 Z
9 L9 t( H& H( y( U# iset customer one-of other turtles-here

8 I$ X& K6 \+ o6 h5 ]7 y1 J* d! N& R! B3 V  \  h# I! h
;; set [customer] of customer myself

2 |# Y5 U5 G4 Q! J) W) X, V  a0 r2 d! y8 k5 u: A
set [trade-record-one] of self item (([who] of customer) - 1)
' c: O4 f4 A+ m[trade-record-all]of self  n7 [5 M. R, y( G+ E! d5 c: w
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 d+ i1 Z; h) g  ~
/ s4 J- d: D8 e2 A& S+ m& lset [trade-record-one] of customer item (([who] of self) - 1)
$ f8 s  }' `1 b( Z2 |" W[trade-record-all]of customer
; B2 u7 L( }# H% J, y; n6 }4 S
( [, t( r. d* w: P7 \
set [trade-record-one-len] of self length [trade-record-one] of self

) x+ H9 Z$ z# `% ?0 D7 {
# S" n: j, h& A; Bset trade-record-current( list (timer) (random money-upper-limit))
* h2 v8 Y$ e* J* y! }! E5 |

/ d& F  x( J. q! _" u1 R6 ^1 j9 Gask self [do-trust]. E9 C, B1 U/ U. _, M
;;
先求ij的信任度
8 m( s$ h5 a! o- t& A4 W* v4 z6 X/ f1 ]5 x4 M
if ([trust-ok] of self)  J# q9 q4 F( m1 @  d; u4 ~2 _
;;
根据ij的信任度来决定是否与j进行交易[/ y" L1 V8 N$ m# n0 H" o
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! n- z8 G3 {$ L

( }  J8 `& q. ~" F2 O& L' z7 N[
, \9 x  q$ h3 u: J% q2 h; g* u5 F
5 \. n) l0 ~, S+ D" q3 o
do-trade

( `/ o$ F* k& ~5 W5 O" E/ a: y3 x
- t: I' F; q5 \. pupdate-credibility-ijl

( d  j' `  I, X- d9 X' P( l, {9 Z; ]; W# D2 X/ Q! n
update-credibility-list0 L$ r6 H  L* P! o, b& d
1 ]4 e) C& z  u, _; w' K$ Q0 a6 r
% B# A/ G( j" Z. W$ B& b
update-global-reputation-list
4 k# w1 c, s4 A& J
! c0 ~% v# m, D: f; @( U
poll-class

. c9 J& p  o" p7 X  t# A1 [9 m: P( R( \& _4 Y: f, n4 k9 i0 h
get-color
8 ?. b+ q1 I* n

5 u4 w+ {7 ?, h]]
2 A) Y" a7 P0 H6 C5 o8 Q* ]' ]5 F* \, Q0 W
;;
如果所得的信任度满足条件,则进行交易
* ^8 l* }5 Z2 q, D
$ b: g7 b* t% I* C( s6 P7 R* j[
4 E! x& m2 I: R7 W! q

* S; P2 S/ K) ?9 ^8 |/ Z8 [rt random 360
- X3 ^( {5 H6 g$ H1 M% O( ]
( k3 a! M7 P& N4 i" b
fd 1
2 |% B7 s! O1 r; p9 N0 J

2 f4 y; U: Y' f# K- V1 v6 t]

8 R  {* W8 p" j( X9 W/ z! J' [) t
end

% z4 |1 t; L6 p4 w6 d
+ c7 E1 z, g% I9 K- j2 e! jto do-trust ) m5 t1 j1 `% p) L4 l
set trust-ok False
7 G& e, j# G- n3 J, {  ^# l1 P# J  d  Y! i3 |

: b/ Q. d4 `: R+ ?% n, i  v0 \let max-trade-times 00 l  X! u# ~5 D% v1 ~, a
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 V1 A$ E% L. Z7 e. Z" `6 Wlet max-trade-money 0
( J) E  _# q4 k4 g! aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 S2 r9 n5 y  N& @5 @- u
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) A3 w' d7 \1 Y% |7 t

! H0 H6 g  w0 f& F& H! X- A
7 C3 `* O  E. P
get-global-proportion
- W. C6 m( ^! G( J, elet trust-value
* L2 t6 S# y4 ^+ z7 u- I6 `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)
  R/ S% O8 e  A4 x6 {( x* e
if(trust-value > trade-trust-value)7 b. c' a! x5 a; |" T
[set trust-ok true]
1 j3 i  \' V% ?end
! V: F! ?" D) S( h9 T: g& l* A2 e4 Y( ^+ O6 ~) O8 |
to get-global-proportion4 }, a7 k' ~- t! b
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: J+ `. L& }" z  \; V" H4 h+ p[set global-proportion 0]4 e7 v7 n) @1 ^3 ?. s
[let i 08 L9 x# f1 A; G# Z% j
let sum-money 0' w7 I4 F- b% e9 ?& i6 _
while[ i < people]2 j7 H7 |' z8 t/ c) `
[
& b: P6 B& Z+ @9 |$ m* k8 L) M$ ^if( length (item i
; ]( a( u9 G% q& b. m0 ?[trade-record-all] of customer) > 3 )

# ]; }: A* {" w( G[" Y, j2 }# x& o  m- p
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% w% ]7 q2 r2 h* ]) T& P8 Y
]8 T% s( @/ A+ ~7 s
]
/ {0 h, @" O" V6 f7 G: Blet j 0  a9 S: n0 s# I- n8 R. N; v
let note 0$ x7 q  o8 d7 x. q3 i9 h
while[ j < people]
4 k+ i4 t6 B4 E3 J; D& T[
5 B7 J4 ?1 ^: ^2 }7 I) I' i. j3 bif( length (item i" g' X* v6 m* s% M
[trade-record-all] of customer) > 3 )
, l7 U! e2 K/ E* o
[! w1 w; g, G1 O+ N
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 Z4 z% G/ B  \; q1 h[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) Q5 L0 M0 I, Q6 O; p
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( {4 G: |0 U5 V" X]
% A1 q6 B/ V# ^% Y' o% k8 l: i]
% |" A3 e$ d) J8 Tset global-proportion note
  M; ?7 N& ?' \8 j: R8 e5 X]2 e7 F5 E3 C$ n* p9 ^, K
end
3 ]$ o9 F" x! A: n' x& _
/ @9 J& g) a: V: e/ Kto do-trade
! b  p+ p; o/ ~+ L. t0 R! t;;
这个过程实际上是给双方作出评价的过程
* a5 S& M* \  {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ d. \5 Q' J3 d5 E2 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 \+ r- Q* k' ]set trade-record-current lput(timer) trade-record-current* E  d* b& s/ D# [
;;
评价时间8 n" D0 J0 j; o  h8 y1 |4 H
ask myself [
+ {( M  x6 a6 ?3 pupdate-local-reputation4 l) u" t% m; z( i! Z: a: P; h
set trade-record-current lput([local-reputation] of myself) trade-record-current
, @& ]1 w* b# P; u9 Z]# N2 w& F8 E3 \- Q9 [( s
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 @' z1 k' B, }3 w
;;
将此次交易的记录加入到trade-record-one8 h/ |+ }& ?, a+ ^9 C% c/ w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* Z& w7 I5 t+ d7 d8 {0 j6 W
let note (item 2 trade-record-current )
3 t# c" Y8 Z0 }' V0 a- \: Fset trade-record-current* c. n4 l8 G& S' S$ a4 |
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 A! K7 @1 U& C3 Yset trade-record-current5 [) U. u9 F/ A
(replace-item 3 trade-record-current note)
1 P6 h" D) k) J7 ?; M6 c5 r( t' f0 j2 `  v  [
. |4 h' q) [7 f. m3 O% S9 j
ask customer [9 b5 k% ?! c' z* V- f3 l8 a+ `. ~  m
update-local-reputation
! D7 A0 l5 c; l' y6 Y7 ?set trade-record-current
; G9 x) \; v! T  E+ d( i(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 _$ I/ W6 S- W( Y]
$ P5 z& @# R# C* }
" T* F# T/ r2 ]- r- e
4 _6 g/ _( W+ ]
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- Y8 _3 o3 t+ e, Q: O* f1 ]

) |5 _$ a8 l# N8 pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 M$ [/ `' q5 u) G) T; }5 u( q. e* ];;
将此次交易的记录加入到customertrade-record-all
) C/ x4 I1 b0 Vend
0 Y, u" [* Y$ F" t+ O
+ c, v$ O+ z7 e% {- ?9 v! hto update-local-reputation9 r1 b& W; A8 u3 [: P0 c3 W+ l9 v
set [trade-record-one-len] of myself length [trade-record-one] of myself
- t6 H: o, p6 i3 I9 p/ Q- _3 D' T% ~, g$ O  p  I, ?$ P3 ^

3 X/ K( k+ Z. d;;if [trade-record-one-len] of myself > 3

2 L& r" A, `& w4 `update-neighbor-total
0 ?% _: K1 r( h6 C- ]/ ^$ y- K; G( u; o;;
更新邻居节点的数目,在此进行
2 u+ C- U% [6 u9 W2 elet i 3. {3 i( G( y: _
let sum-time 00 f* _* d0 A& w7 a( o/ u' R$ Z8 ~
while[i < [trade-record-one-len] of myself]5 T/ g9 p/ x$ b- Y$ Y; W8 h8 i- r
[
# A, |; {  w3 K7 K2 L6 K/ \set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! x. C3 p/ Q8 A& E  n4 l& o
set i* r/ r. b  O2 R5 v" t; Z+ o% r
( i + 1)

9 g! S( p9 o9 M/ M6 a8 j]0 r/ r' A; N0 u( B- c
let j 3
8 `; O+ P* Z! elet sum-money 00 _% d" @2 p  X+ p7 J
while[j < [trade-record-one-len] of myself]8 y2 \0 \$ Y& M2 _
[
+ g) c' B5 S! U# t0 Wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
. w- {1 S' ]) D4 ?8 Y' t$ Fset j
* c4 B; j+ f9 }$ E5 H3 G" X( j + 1)
2 B0 {0 \  b; T- B
]
9 }" g0 j2 a* w9 x2 r- vlet k 3. A# {! n& {- Y4 Q2 g& ?' p
let power 0" t% C/ \# j# u' X
let local 0, r6 w7 @! h3 r9 s
while [k <[trade-record-one-len] of myself]
) V! `0 C/ t# s! f" h[
: ^9 v) |3 R4 ?" T* h& H. ^" oset 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)
5 P/ H+ R. a, Q6 C+ a% y! C8 o! pset k (k + 1)
0 c. x* ]5 [' L7 B% r/ e7 j' D: ?3 q! m]
1 }. I- D6 f7 U' x2 U0 \set [local-reputation] of myself (local)
. k. T3 z  Q$ d0 L- y1 Hend( r' @: s1 Y0 P: Z. B) {0 W

% X9 F' D' `) z4 E7 X1 qto update-neighbor-total' F/ W' U* u2 f! `% v
  ?; P& w, N9 }6 l2 a6 N' P& [- J
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]1 {( C+ l2 m9 E; N. v

! Z& s8 u/ W$ o2 ~
! \2 m9 r5 W& y4 O& T
end
3 G  ^9 ]! v- M1 W9 U( u0 F/ O0 @; Y, |  {# m1 Z
to update-credibility-ijl
( S6 t. V" K, ~
' L" a1 Q) Z, T9 d;;
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。6 @4 K- k: Q% W) o8 s8 E7 h
let l 0
2 a3 E+ p' a! x; Nwhile[ l < people ]' _# P' @! o4 U9 T# P
;;
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
. L' Z9 p8 N* h6 W% C& J4 w' `, B[
" V, \' q$ g. vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( |1 w1 V0 N8 Q+ U7 Cif (trade-record-one-j-l-len > 3)
! I4 H+ w3 P, ]+ O3 B[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: Z, k3 \7 f7 Z; d# M
let i 3
! ~/ P& x( B# X7 @$ Vlet sum-time 0
1 ?+ l0 |" n  i3 r1 pwhile[i < trade-record-one-len]% V" ]: Z9 L% f0 A
[( k" g. P6 P" H' w
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" L* S  l/ p* p: _( W6 B! kset i4 o. S6 t1 ^5 F9 l
( i + 1)

% |" a' B0 s- G4 b2 Z6 d* Q( p2 D9 k- []' W! z& D2 R* t4 o% j+ h- @
let credibility-i-j-l 0( [2 x" F9 I7 E! j# U9 [  E
;;i
评价(jjl的评价), f; W! H: p. F* g- U. Q
let j 3
7 _* _8 D- u7 f# l! p6 slet k 42 H( c. o# Z4 _
while[j < trade-record-one-len]
' }2 ~+ q4 M+ W% @2 m2 t" W8 @[
- f) V0 j$ C0 k- z( Dwhile [((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
- ^, U3 D8 O% B% M% Y: V: e! Hset 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)6 e. ~$ y  k6 i' P1 w
set j) s) E* N3 w( T
( j + 1)
0 [6 u, }. \3 k9 K+ f2 J' Y8 @: h
]
' a! b, |# U. @  `6 [5 K: w, jset [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 )), E. @- W; F0 `- @6 H0 Q4 u

: B3 S+ n+ t! f- z- @. i

% c  v+ H+ P* @+ s% S* a* n5 u% Glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); v5 }0 Z# c( J1 t$ `" }) e
;;
及时更新il的评价质量的评价
3 C0 ]. B8 Y, [, hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 U& \0 _7 f, P& `set l (l + 1)
  U: k) O) S* `+ S]
6 G6 L& _% L: e7 x6 y' d4 aend" M( {  J5 R+ v2 F# {1 i
& ]. |& _4 m4 V: L, N6 d" z8 I1 E
to update-credibility-list/ w" S) P" }) S: `1 L
let i 0; v6 C/ y, J1 |9 D6 ]
while[i < people]
) Z$ M/ b! z) P# |* n[- `, p6 K. b: }9 N, A. [% x; o( D# R
let j 0( ^3 E3 A4 C7 X# i5 Z
let note 0
9 B* L& D$ d8 M+ N4 T: Mlet k 0/ G# c+ `: z8 ]
;;
计作出过评价的邻居节点的数目
$ ?* q( _. F( ~+ W3 {( E3 Bwhile[j < people]8 z- M5 S4 h4 j$ I! Z3 B
[
& Z3 s1 u7 J8 n! c: ]) g+ V/ P0 qif (item j( [credibility] of turtle (i + 1)) != -1)
  Z1 d/ l0 K& `;;
判断是否给本turtle的评价质量做出过评价的节点
- @& Q5 f7 U. x" h[set note (note + item j ([credibility]of turtle (i + 1)))# y: K: j& V9 V0 g5 A* V
;;*(exp (-(people - 2)))/(people - 2))]
2 R1 X5 {# h$ a$ x  `# C
set k (k + 1)
+ `: P- {, T9 l]1 e  e5 M0 y9 \  U% E" S. j
set j (j + 1)8 G% G! i. y# r" D! L% T# ~0 j7 V
]- u5 |+ E/ \5 ^" ]9 h
set note (note *(exp (- (1 / k)))/ k)# {, F  ?: F( }" N) u
set credibility-list (replace-item i credibility-list note)
* ]8 ]) r/ o6 n0 o2 _, o% Rset i (i + 1); P, _+ x/ `. ]* p" Y8 }2 J
]4 _6 V/ q- j2 z4 g' |
end
' h7 ]/ C: _4 O; T) E3 Y) z2 e- G& i# z$ l$ x0 N
to update-global-reputation-list" X( h6 E2 t9 ]1 n8 M3 i2 D" n6 X
let j 08 s7 a6 O7 v3 Q- m
while[j < people]
  }: T* a  U! u& u# X[
# n' e+ z" |# D0 w9 Elet new 0, p# f2 Y6 y& F9 r' R, Q0 I
;;
暂存新的一个全局声誉
+ M1 c1 Z+ c" Y, o: B- }/ Wlet i 0  J8 C% `! g# ^/ r. H* M/ p
let sum-money 0* t( H/ V/ X% k$ a1 t" A4 y
let credibility-money 0! @5 p( G6 j; s2 a" @
while [i < people]2 o* e! a& U: s+ c- @5 g9 Q
[
' g$ T' c, S, R  ~" T* K; L5 U4 Y; iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# q) ~, p& L: @' [+ c" G8 Hset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 Y5 ?' b! O# S! U7 G7 w
set i (i + 1): D' c& ]2 F' k' k3 M6 i' C( O
]* u4 l( l1 }1 _
let k 0
2 G3 ?* D8 A$ _: ~$ S0 A* P7 ~let new1 0* R% D; B* y: {
while [k < people]
$ ]) R0 L% y+ k; m$ S; h[) B5 t, {! f7 V3 ~
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)
! u$ H0 ?* ?3 B7 m( `7 [set k (k + 1); a7 X, o) D: K2 s# s! z
]2 W8 \# C1 A2 J3 ?3 {
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : ^0 P2 b5 b; g6 [
set global-reputation-list (replace-item j global-reputation-list new)  q4 _) M! d6 o  ~7 c3 B/ n, W! p
set j (j + 1)  X. u: I: ]7 A; q8 N" Q6 Q
]
2 K  w1 ~2 W8 F6 X4 w- c- m9 nend
, c; z1 k$ L0 E- I' N2 m& B3 q$ @- |" k
* K) p9 O5 |7 r* h9 G

6 y7 X* f* @; p: nto get-color' E5 r# X/ b( S8 \- K) d0 S* |
) S5 {" o* h1 u
set color blue
$ D) c: D7 o/ e' C. i7 ]
end
; C) p$ U& Z3 i$ i1 ~  M8 h6 {
- E# H6 x4 i: C& ~0 Ito poll-class  t) S- y8 M$ ^2 U/ p6 n
end+ D! O5 L9 J# |' G/ [0 D3 r
* Q8 D2 k4 A9 M# ^) C. w% P
to setup-plot1' ^8 `; U: z& a: I% ^
, ^) s. ]; |5 c+ q7 X# `
set-current-plot "Trends-of-Local-reputation"

5 A& X# u0 ?& I/ D" C5 A5 t% _0 ?' E3 M) a- Q' [
set-plot-x-range 0 xmax

9 ]7 Z# {* {% x$ s( v: @; b' ~+ m! r; T. Q" h4 o% S- w
set-plot-y-range 0.0 ymax

0 Y8 A9 h6 @; [! u0 D  p2 cend
$ k/ S: ^: \* b  P) [2 A3 j/ b  _( S6 ]
to setup-plot2
$ |7 ]* ~/ n* k; P8 G4 q, n6 H
; I% s. n& J& n. s; Y1 `set-current-plot "Trends-of-global-reputation"
0 G. _8 m7 \! D; F
( h7 x, W7 r. t% q9 Y, M( t4 e8 A
set-plot-x-range 0 xmax
/ V. J5 x, v8 ?' V1 ~

8 a! }5 ?7 c' Gset-plot-y-range 0.0 ymax
! X* |/ l* A$ z6 F5 I% m  e
end: X! H( l3 r. c7 [7 j
7 S0 K  }# L8 X7 V" O7 s0 Q
to setup-plot3" J, D/ i8 k9 _& o8 N' Q" p: D0 p

+ o: T. e8 c6 T9 W! i; n8 Vset-current-plot "Trends-of-credibility"

2 F5 F0 N& l6 F8 ^7 ]0 o, K  e% T' f( K( B
set-plot-x-range 0 xmax
8 B- P5 I; b+ L5 I, R4 Z7 h4 C

9 A& N+ }. f. N$ Q6 c' Oset-plot-y-range 0.0 ymax
9 j, T5 X% I( O9 L6 f
end  U1 l+ w- G  r0 Q1 n) Y( G
/ o+ X7 e8 _/ B
to do-plots
, P) y+ M, M5 {. u" G- T, D# Jset-current-plot "Trends-of-Local-reputation"6 n- w- B6 J2 g: D5 S: m
set-current-plot-pen "Honest service"
  Y" K. x$ ^3 iend
: X2 g1 d3 p# Z% B5 P8 S" Q/ g+ p& R& E1 I  Y" [  f% q$ x
[ 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.
* V9 m; {3 k% x3 u; a: s
( N. h# F) P" S0 y* p- }! D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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