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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* Y9 U* Y1 {3 W! hto do-business
# F) T% N4 a3 \" b1 n rt random 360
+ I. p: B) w* o+ a9 X3 z2 A fd 1
1 ^! [- b1 N& j$ W  D ifelse(other turtles-here != nobody)[! `$ S9 V' O3 v1 Y5 I$ \
   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.
, u8 l6 L5 H0 r; T' l7 ^' F9 Y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : h; }* g% F+ K
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; W2 w# O' g1 |+ x* B/ {0 T$ q
   set [trade-record-one-len] of self length [trade-record-one] of self
0 a, T  m; E7 S% q$ h9 q% ~+ l   set trade-record-current( list (timer) (random money-upper-limit))
& p7 Q+ C0 _. x$ Z# U, }& ^& l- N9 o  q: I$ F
问题的提示如下:
, J. M" ]# f& Q
4 a( m2 a9 l% @: S* L3 X6 D2 y% g2 herror while turtle 50 running OF in procedure DO-BUSINESS
$ ~$ q3 Q4 S# _8 S2 D  called by procedure GO* v2 O; o6 H3 Z1 @& \7 @
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 ?6 X" ?& T1 d! D. H; L
(halted running of go)9 h9 M4 h) Q. c  s
3 ^' b2 E! g0 F# X% ?
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~~. Z( p- _9 ]2 d1 P2 Y
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2 a3 G8 C! P1 T6 M! V, s3 v
globals[1 v5 T+ I2 x  G3 i  {/ A
xmax
5 s  y7 m  K* _* T# yymax
+ y% P' Q; @# K, U+ \1 sglobal-reputation-list1 F6 u0 R5 l0 ]. g5 K$ s

! r8 H, F- ^$ @) I9 t4 w" i0 `) ~;;
每一个turtle的全局声誉都存在此LIST5 ^" u3 o3 b) r& ]+ Q
credibility-list+ O, Z1 g% E& Z; B2 c
;;
每一个turtle的评价可信度. p' M) n2 I; T" k! ]3 {/ T
honest-service
1 x- c# z9 U) h6 d% \unhonest-service
" d0 Y5 Z* e9 n; a2 x- P! roscillation7 K# O/ x  f/ ~& d8 g* B
rand-dynamic
9 o0 |" P4 U9 i]
7 _* Y8 j5 p* H- p) _6 a" x- i. q5 x' B1 `1 k
turtles-own[  v0 n$ L/ G3 C6 X8 \7 x4 L
trade-record-all. A# U0 u; T5 O4 B
;;a list of lists,
trade-record-one组成
) n/ \; _) E$ F0 ^! i# y/ }trade-record-one  k1 j% a: t; [1 @6 v6 I. \
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% c; o: x( U' d

8 @$ z" z' ^& ], e6 c( u;;[
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]]0 ?/ c0 c1 ], W& _
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]4 t7 [" Q* k5 G$ s
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& Y! j. E' C2 t6 c' w
neighbor-total9 W' \+ c/ ?& p9 k. P/ p/ P
;;
记录该turtle的邻居节点的数目4 L- d' U0 m; g+ O9 h! o8 i
trade-time
, }: ?$ x' n& G+ _! \4 R& V5 F;;
当前发生交易的turtle的交易时间0 n" f/ l+ }# r% }% L0 c
appraise-give" ?6 d+ w. Q( _  h9 V) g
;;
当前发生交易时给出的评价* y( o% @* g4 j. R7 u, e7 @
appraise-receive8 l! }# e' }% Z. ]: z( Z: A& h
;;
当前发生交易时收到的评价
) }) H. ^7 U( x% t0 fappraise-time' E# O! \# J! |& z: I/ D
;;
当前发生交易时的评价时间
, g& h: f$ j9 C; u# f6 l2 j- `9 Glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉# Q' h1 \  q4 k3 p- t7 y
trade-times-total7 W% P9 Z9 z. N  C% M
;;
与当前turtle的交易总次数
1 m/ I6 w, }3 [3 N& rtrade-money-total. J5 p+ ~$ i: M
;;
与当前turtle的交易总金额8 ^$ p) h" L# Q
local-reputation
# p9 ]5 x0 k3 Y+ D! e; aglobal-reputation! M. S3 L6 E4 n
credibility
) x$ N. M* a0 A;;
评价可信度,每次交易后都需要更新; q8 f+ s4 b/ j( J) ?1 a
credibility-all
/ M2 n8 u6 \, Q  d;;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
- h7 y+ W0 J: _6 m$ k
( |6 s, T2 D2 t;;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
$ ~/ j* H* c. `credibility-one; s4 y* K0 ^0 V& D5 \3 T$ h5 [
;;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( M) ]( o! h" @8 @& B
global-proportion
! J& t5 A% U* kcustomer4 n" m# }& g/ P1 u1 h: R5 H0 D
customer-no
/ [/ D4 a/ `; I- W  ]  K) Strust-ok
* Z) d$ d: g/ ^& o$ n1 K  Utrade-record-one-len;;trade-record-one的长度
5 U) U: a* q  j: v9 j6 B5 y& I]: |& O. [/ S' X; }" H/ @
* G+ J% C7 [1 a
;;setup procedure
& I: T: b# ~6 j% \% y4 Q
. h8 O( V+ P2 {7 fto setup
3 s; D) M8 f8 k7 P" Z
2 b$ p$ n+ \5 p7 H9 y+ Aca
: l/ ^6 Q# t8 S! ]
3 o" |) o0 |7 {1 A) T) \, u- y# l
initialize-settings

  i' Y; q' H/ u' L& g3 i- o
. F& j, j" D3 C3 c) _4 Tcrt people [setup-turtles]

* u2 K, _5 M! @* }# @3 X  o' K+ t  K6 V2 z, E
reset-timer

+ H5 f# U9 t+ A( x# v
. x( B$ I; }" S& v' C3 P" `) rpoll-class

* C5 q2 ^: o( T0 t: A' N9 O, K! V. v/ G0 U& O  h
setup-plots

3 A* x* Y9 v# ^0 o
0 I; X; I4 T0 q* z! T7 \& k) rdo-plots

+ S: \, q+ H* Zend! L$ P$ C- h# v! v, t

$ N: W. k$ w( I, ~- Pto initialize-settings  K* V: |( ?5 o& @1 }  F
4 U( b1 q2 t! W6 |2 g
set global-reputation-list []

9 b! g7 J" ?- k) U3 g0 g" p& M: {
set credibility-list n-values people [0.5]
& `* c$ n5 v& V; }3 P. u. T

. H- G& U' d5 ?6 K' _& {set honest-service 0
4 \8 c- |8 P0 k
# k+ \5 F+ }& R! @: H/ D6 z9 @5 w
set unhonest-service 0

" ^: R$ [5 Y1 a: c+ ?- X5 b. C/ G( p' |. e8 i" l
set oscillation 0
0 j; \' v" m2 L( i& p

" w1 B$ w. L5 H2 c( x" Z% [set rand-dynamic 0

4 C0 U, x! ^% r0 F+ E& Q% ~) tend8 Y% a( `: _9 J( A( T* B
5 K1 `, f6 O5 C+ m5 o9 R& _+ j
to setup-turtles   B/ M/ \+ Y$ g3 u
set shape "person"
2 d& v+ |2 R7 c: L; A7 Q8 |% e4 a. msetxy random-xcor random-ycor3 k2 M. t5 F' K, _
set trade-record-one []
; @4 G: Q4 P! A
% {0 ^) _& d  U
set trade-record-all n-values people [(list (? + 1) 0 0)]
: |; L: r' }8 C2 g$ w+ C
% p4 G9 q6 D, P- Z: W8 V
set trade-record-current []
; ?2 H" ^8 h4 f  F1 Q0 iset credibility-receive []
' T' w3 ?5 H! o4 @0 a& _! V1 @set local-reputation 0.58 A$ B( D+ f- a7 Q& U( y- Z' ~9 P
set neighbor-total 0
' r9 W1 n8 ~$ a1 H* }5 T5 b/ Bset trade-times-total 0
. t% S  i1 w, F! Uset trade-money-total 0, Z7 K! \5 w' A  b  a+ g9 u
set customer nobody) Q+ T2 ^4 Y6 `- ~# N6 z2 a
set credibility-all n-values people [creat-credibility]
5 v5 V" G( v- E3 j/ U' ]set credibility n-values people [-1]+ O( R, K* w' R/ w
get-color5 {2 A! y) d, c3 C8 A
9 C7 N# J! w0 ~% c
end6 t" X* t4 H+ N1 P

, C! K  I( J2 F( Tto-report creat-credibility* W6 J- r) ^2 G
report n-values people [0.5]
% f# P7 ?# X( bend
$ U* v" ^8 N1 i' Z0 b# k0 i4 {$ E9 {
to setup-plots3 F7 ~! V$ \  m( F: L2 w
$ e3 l7 f) [9 a4 w# h
set xmax 30

4 z2 t2 e4 Y# B0 ]7 L. S/ S0 i7 b, m
* d. a  n! }- |$ }& z6 G& O( iset ymax 1.0

0 \; x5 s/ R3 u2 _  w! N; }& V# ^' b9 h9 u7 {! r: {. G7 v% S: ?
clear-all-plots

8 `: Y' e  J# E3 X, T# C
* z2 _. s6 P& fsetup-plot1

7 i& m2 f( D9 O4 n4 g& g8 D; u0 P# V/ s) r- b% f( o/ O
setup-plot2

4 Y* |% S( a. u( a- E
/ T8 |3 {4 O* Z! m& isetup-plot3
9 ^+ Z. O' q. \# t% a: t2 S3 m
end* T& _, _' b0 o% ~
3 p$ Q+ `: t, d5 j% V
;;run time procedures/ x/ [- [9 A6 n1 U
/ l% R4 v7 t4 a' m  h  ]2 y" Z9 R% u
to go, v- A; G8 Y* P4 A2 {! U
4 Q% z; v" Y% ]& L
ask turtles [do-business]

2 K  j8 F5 [! Oend( L# F% }( P! x

& N% m) S/ Q8 U9 bto do-business
& I- T5 X. J8 T! {

$ F. _( W) T3 c9 s* |. k: H4 p% j$ `8 x- E  T  x0 z, {+ j% H, ?
rt random 360
3 V' m( g+ y" q
7 @% W) C) ~& D  ~" R
fd 1

8 \6 v  \# y) o" B0 D. {  D+ h' r5 O  q2 N$ k
ifelse(other turtles-here != nobody)[
$ X% t8 A& L& d. ?
' K0 c3 u0 F$ O: u5 ~
set customer one-of other turtles-here

) O4 c7 k  z, S5 E) H1 R* X% W7 d/ O2 U* F5 ]" B) j
;; set [customer] of customer myself

  G! l; K' ]* s5 Z% ~7 R5 N3 x7 M  ]6 p2 y. L- l3 A
set [trade-record-one] of self item (([who] of customer) - 1)6 S0 W! [2 m' P6 b+ j2 e4 ]! S
[trade-record-all]of self
0 V, x5 h$ M& |+ o* a3 {  c) O! |. a;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% Z- }# \1 v6 @* Y* y, y6 E  W; ~. z2 N
set [trade-record-one] of customer item (([who] of self) - 1)
$ h" @* O8 F9 X  n' f% I/ U  J[trade-record-all]of customer
+ T% T% `; I' `
2 v% E! \- F3 S; v) p' w- C
set [trade-record-one-len] of self length [trade-record-one] of self
; [. E9 G" l  A& E! d$ i

7 o- B7 _) L* J8 s4 M, F! Oset trade-record-current( list (timer) (random money-upper-limit))

6 H- B2 g$ w) w. Y  w! k
7 ^) i  R9 R  }  p( qask self [do-trust]
. Z" [2 x! n' n* K7 G* r;;
先求ij的信任度* o& E' k# N% R3 U& [/ I- e

- @' U4 p/ K. E: R' eif ([trust-ok] of self)6 v- x6 w) ?* K0 ?
;;
根据ij的信任度来决定是否与j进行交易[# b& K( r: [8 f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 Q6 ~$ ]% `$ J) J. n& a! m4 o8 x4 ~& y9 q6 w6 r' ^: {. Z3 f! ?5 c
[

1 X* l# n, C) f
- k8 Y' H& \. k# t- ?" ydo-trade
3 _9 d  @+ ^+ {8 o, g- c- z3 y7 S

: k% h& {3 E* R- ?' e) h; @9 tupdate-credibility-ijl
! A4 ^% B4 Q& P2 B- `

7 V) w" b- p9 L: Z8 R- g. A2 ^update-credibility-list
& B7 J1 O" _/ E$ h0 ?4 v- u: v
. C) N2 K& N6 M
  Q7 g7 f$ x) C( A2 _+ l- [
update-global-reputation-list
1 M, y% W/ |7 h( B2 q6 z
7 U  c' i# W+ U0 r
poll-class

& _0 s! b& g$ Y9 j1 M1 \; C, k& r8 Q
& X6 @3 z  m$ ~) d" u7 |6 G1 }get-color
, o  f1 y4 g9 [

7 _3 [5 H. X6 u8 R9 j) E6 N8 W+ D]]
0 `- o4 g3 Z$ k( u( Y
/ j( [8 q) w0 X6 Y  x  Y1 M" n;;
如果所得的信任度满足条件,则进行交易% V+ Y6 f6 ~; Y& _- B# i* K

8 |% c. @7 Z8 ~: L7 F[

# L- ~# q7 U8 e# f) D% Q! r3 y  r- g' {) m) u* d/ b3 W2 @
rt random 360

* y/ o, U+ m- a" n
0 }( d" l1 h2 W/ b: ?4 hfd 1
, v* S, M9 _6 t& V9 t- q) [& h
: M! M  K. p- i) b  p
]

+ z' [& c( V$ W( v1 f& w, r! Q: ~( J9 f9 r
end

/ k0 V( O& W0 ~" w& O; g  Z' x: U
- l" |, |9 u3 R/ ^+ z4 g" P/ n$ i* x/ kto do-trust
# u: m/ y' k7 o# [/ L8 W3 Nset trust-ok False% k8 ^+ V7 l5 D8 l

; {" v0 m6 u* U6 E
7 ]% H8 d: T6 }
let max-trade-times 0
2 x9 l. M+ l/ n( w2 T% P1 ^foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 i! D$ j7 s; o; a7 ]
let max-trade-money 0
6 F* w& r' C( T9 H) X, U7 s$ Sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ y3 C" v0 i, j7 S4 Elet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" }) B9 S* p8 v, @( Y+ U# y, Z

% ]2 R( U# m$ W
9 {/ {" [8 c* O' h  _
get-global-proportion
- B6 s' i# O3 s& _9 |& v/ ]# V* ulet trust-value1 Y8 k6 j# P0 @3 s4 I3 ~
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)

+ |' ?1 |6 H9 ?) J, nif(trust-value > trade-trust-value)
1 l+ q4 {6 I* r$ ?4 z[set trust-ok true]3 l' b2 x4 b  q. ?3 B
end1 |2 R$ {" F  i' @9 Z3 O# q. A
" P  q. E, h& e2 [
to get-global-proportion: |) S6 `' I: d) h. ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 p! t' L/ J9 |6 X
[set global-proportion 0]
9 w. C& e+ ]4 z7 O/ Z+ V/ t[let i 0
$ c( s2 W& H; P7 R  V3 c, `let sum-money 0
, }- |! d8 b: n# ewhile[ i < people]
* F  s2 B$ o! _! B  {/ m[
* f3 i% }& X% n' iif( length (item i
& ?! |8 ~1 p# q# N[trade-record-all] of customer) > 3 )

$ F* _9 {6 z8 R) w2 H+ s7 C. v[7 x+ I% U2 `1 B5 U% Q" m% R: {
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% h: G$ X6 s; I. X% e3 y]
. F1 D2 o% l2 U- j2 J2 P]/ ~' U. k: b- _
let j 02 S) x3 m# o- ?: R8 G* |2 U0 n
let note 00 |) n" q5 K' Z, h4 e
while[ j < people]
) k5 |! g- _  T[
4 ?+ P! \: T/ x9 t. Uif( length (item i. }5 r0 t+ f- R( c  @  W5 V) S
[trade-record-all] of customer) > 3 )
2 ~7 o1 _5 L, u$ \8 {( p
[
$ [7 K+ b3 Y3 c3 yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 a3 z$ `6 Y+ f* c1 m1 p[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& L' y5 l- Z. Y6 j, V
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( S" k) h( d( s7 ]; Y  Z
]+ N: V6 F# [4 M0 K" U' R  U
]$ N' z1 i& a) M8 d$ F
set global-proportion note; M: g) T; |/ I% n- o
]
( _7 r8 A" w( w$ send2 C5 T. `# l4 g. k  K# E2 V

* @& g1 Q# i* L0 b" tto do-trade
& h6 F; ~6 b, {2 \% j;;
这个过程实际上是给双方作出评价的过程
% ^4 E  x* Y* r2 }3 lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  S2 p+ R, @" e) d/ L3 p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ E, o/ I2 A; w! ?1 D" `+ Rset trade-record-current lput(timer) trade-record-current8 t/ l* I! i/ s2 V
;;
评价时间
/ {  B6 D0 p" b5 F; `ask myself [1 Y$ X& N' I/ g4 e& z" U
update-local-reputation9 E/ W) f( X0 y
set trade-record-current lput([local-reputation] of myself) trade-record-current
. Y% C0 X4 k6 S4 T9 L& A) C9 j]1 I  H7 p6 }6 U7 E8 h. t# H
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 ~6 B! z! K' g$ o3 y9 Q;;
将此次交易的记录加入到trade-record-one7 L" d& L2 r; q: @
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ c' v1 r4 G3 ?7 m0 G) ~
let note (item 2 trade-record-current )
0 ]$ q- b3 m- b" L- Zset trade-record-current
; b- U8 L. r5 C( `4 H. ]# b7 e(replace-item 2 trade-record-current (item 3 trade-record-current))

$ L, H. j$ }1 p. B3 V. P  G7 ?, Q  Pset trade-record-current! K2 {% Z# U% z7 x4 K+ }7 C8 t/ b
(replace-item 3 trade-record-current note)! M% I7 l# @6 C' [

' L! l# Q6 J5 }1 ?9 d9 p
4 c9 w$ ?- q5 e# b# e# u
ask customer [4 e: Z: T- f# x
update-local-reputation
) u0 J9 O6 t5 G3 p; y) Vset trade-record-current5 ^# O2 F& G" c( v4 d! @) H
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* F& B! a1 S% `
]* H, O( g& x9 S8 X9 V  \% i
  }4 a! K! w! _8 M- |
' ?! e( f' g/ n
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 p7 ?* r) y2 t' Z) d0 Y/ `! a, k

5 T# v/ T  ?! z- B+ ^set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' V: V7 z1 p! ]0 k
;;
将此次交易的记录加入到customertrade-record-all3 ]2 u6 c$ a. w9 R3 {7 r! N7 f
end& ?* Y' I6 M7 A, [7 _- U
! i+ {( [( Z4 q
to update-local-reputation
1 f4 M; Q9 J! n6 @set [trade-record-one-len] of myself length [trade-record-one] of myself
& a' D3 G, s- {6 t& q# C# d
& _$ m  z9 i. f4 E) P' H# W# L2 D+ f9 w$ }7 p1 u
;;if [trade-record-one-len] of myself > 3
9 j' B7 A- G1 z/ K! t/ e0 @, y/ e3 ]/ c
update-neighbor-total1 B2 n6 N3 l+ @9 z# u4 b6 b
;;
更新邻居节点的数目,在此进行
# q6 I  M4 }! ]1 s% f% z3 w" ]let i 30 e& R3 R4 m# O( I4 V
let sum-time 0! d6 p* n2 V- ~: P9 m+ k
while[i < [trade-record-one-len] of myself]" S# M$ o/ G& `/ J+ t: G+ h( l; O
[
8 R& b$ L6 u$ R+ x, ]set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* ~; f) w  k- t; o3 N
set i' l* W8 }) @$ B3 Q
( i + 1)
, K( e0 D' i8 ~3 }
]
4 C! b! _1 w+ T7 Ylet j 34 A, J) G" T2 [: T
let sum-money 0; h5 e0 I  q. V6 ^0 ~3 {
while[j < [trade-record-one-len] of myself]* P8 s' o' W& ^$ E/ c) r
[
4 L* l: J# M1 i& O. O3 Fset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
- y9 s" }. A) B9 w2 X0 E9 z: @set j
, ?3 v, X) ^" a8 n' o- J0 B( j + 1)
, E# F6 b: r- s% m$ }
]
* l+ u2 s2 @8 F5 Q# Y; Jlet k 3
5 g' `( X8 t1 t& P6 U' }let power 0
; p2 D/ J* I6 }! zlet local 0
; s  S3 O4 ?% A' _, \4 Iwhile [k <[trade-record-one-len] of myself]
2 M! E; `4 M9 z" Q[
; L8 P% R" f" m' C7 E: f0 Vset 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)
2 g$ l0 W0 P- s  U# o- i" A) ^set k (k + 1); U$ p0 i3 \9 f5 c1 O4 Q1 r  N0 C+ ~
]; D7 L5 s; ~4 c) F* c8 M( S
set [local-reputation] of myself (local), j* N( A: t2 O1 i; S" m3 U' v% R
end2 G+ r0 {+ J( o% Y( o- s2 N
6 |3 G2 h( u6 M9 ?4 M$ n
to update-neighbor-total
/ ~" M6 C2 p4 n" g
$ {, P2 J; o1 Pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 }  ~+ e. B" m$ r& B( T' O' W& [5 e

' ?6 l9 O2 N9 w" B( T9 ^8 Vend
: `% t+ Q% J+ v
# ~! j3 `' e, B( Y* f" K& ]to update-credibility-ijl
/ Z' U1 C4 L! @& y8 d7 {0 y0 G
) X' s6 f' N: c# u4 W;;
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。: r6 Z! L! d4 r& M( f( E
let l 0: f7 c3 X2 i$ o# O' w# e  A/ g
while[ l < people ]- @% ]8 Y7 `  M$ f
;;
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
% Y, }2 p; [/ z7 ^+ h2 k[
" V" ~8 I& ?/ {9 u, J/ o+ ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. P9 r/ q0 f+ K" wif (trade-record-one-j-l-len > 3)! p6 r2 c- `. o& `; B" W4 J
[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
: V! a* l7 c1 `: elet i 3" r( W% J3 K% W& i8 |
let sum-time 0
  w2 Q3 _- I, y! P6 c# R1 x/ p, ewhile[i < trade-record-one-len]3 w% F% r  U$ I* B9 c: ]( a
[- k2 Z, w5 C. N1 G9 V$ v+ I( Z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# W/ m1 E; o1 b9 a% jset i+ q( c$ R* W, w0 R  p
( i + 1)
2 b  M) F+ e6 A; I# i$ y) L& b
]
& {9 L0 N* |2 }! _let credibility-i-j-l 0
% c+ Y' X- C& B% r5 q8 S9 w! o;;i
评价(jjl的评价), r$ N, i( L* N  u# M$ L) j$ S
let j 3
6 K7 I; ^' b( c5 q3 |let k 4
! M" }8 _8 W9 R( k5 Kwhile[j < trade-record-one-len]
( Z6 H# O3 o7 h7 C( O# c2 _[
* m3 P4 y2 J( L  S$ Uwhile [((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% k. x% k- s' A' z# g0 H2 b
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)
& H0 i: ]8 D4 [set j$ E9 |+ q0 T! I
( j + 1)

4 m; h  d) M* _# n. Q+ |; x]
9 K7 l7 R- c1 {7 Rset [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 ))
) B/ e& g9 V* J' S* R5 h3 K
! e! K# S  Y) d$ U% B3 e
" l% Q9 h3 ~3 G0 x3 X# X
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! a6 M8 u+ D& r" i' y, [;;
及时更新il的评价质量的评价
; n' N9 w+ Y' D: W3 |, x- W0 E& M. Y" eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" V3 m' z+ t5 G0 `1 a) ^5 B8 i
set l (l + 1)
+ C- Q* E) \- W]6 u; S$ d5 N( C. Y$ e7 _
end1 O: C# ^0 I$ s

/ Y0 _0 W2 \, @: W5 f- gto update-credibility-list  a- j2 H9 u# s$ r
let i 0
* s) ^) f3 w3 J2 s) U7 o# Fwhile[i < people]
$ m# ?: Q; ]0 m  |[6 j5 m% X6 x$ _/ ?1 m; V( A
let j 0
: e8 o6 ]: @0 o5 s  f  p; K: k- [8 olet note 0
+ {, b* E" O6 G$ _let k 03 a9 n: t$ [* a8 Q/ j1 r2 W
;;
计作出过评价的邻居节点的数目0 \7 X& w' w% O
while[j < people]7 }% u) A6 u( w( a: E
[9 i7 {5 c0 @0 P: h( k0 l9 L; H
if (item j( [credibility] of turtle (i + 1)) != -1)7 ?# Y" t7 r( a
;;
判断是否给本turtle的评价质量做出过评价的节点# V! ~/ f5 v9 I0 j
[set note (note + item j ([credibility]of turtle (i + 1)))- `& Q& `7 S5 a4 u9 K' l
;;*(exp (-(people - 2)))/(people - 2))]
3 ~3 a2 p* R9 x% @) G, Q
set k (k + 1)
# F' t, O* u' [2 R4 q. L]
, r- Z9 i% f, b4 W) i0 i8 Rset j (j + 1)
7 b4 U/ E/ Q0 f; K) S; C]
9 J. z* u* Q  `1 [' u4 cset note (note *(exp (- (1 / k)))/ k)+ {) D2 R! V6 v# B$ w
set credibility-list (replace-item i credibility-list note)
- U) d: M- ]3 P! h6 c! nset i (i + 1); n& l' g( e  ~( ]$ r- c9 J
]* W  @4 z7 R+ J; n6 T- e7 f) S
end9 r+ y; y7 y* {! G
0 @  }0 F4 v) Q6 N2 [4 l( u
to update-global-reputation-list
6 T0 j1 l( z4 W2 wlet j 0+ t6 d1 Q0 q0 x0 g+ q5 ~
while[j < people]# c& m3 {: ]& Q$ V1 P
[/ l8 a2 X( O- T8 b: O8 c  a6 S
let new 0. d8 q. a8 E$ }% g, o) i
;;
暂存新的一个全局声誉, ]0 x% s/ o- m. I
let i 0
" W; B: C4 T" j& T5 Clet sum-money 0. ]3 y4 b$ g% e& v9 e9 n
let credibility-money 09 t# W( q) L; S
while [i < people]
) @, A2 k- |8 f# v& e[( |# r' ~) @; Y( B
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 V/ ~% C1 J: x" M! m; dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; V1 T: a6 M4 fset i (i + 1)9 C- N  Y2 C) ?/ h
]2 l7 i+ L8 d( A+ y
let k 07 g' z3 |% Y! l: [
let new1 0; E) M! O5 T# a0 l% R1 Q
while [k < people]
- u" G2 F3 f8 U  V% R[
9 X: E! }5 p9 Dset 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)8 o2 w+ {5 f) r. I7 b% u- b
set k (k + 1), P+ P- @- m6 S& ?$ l1 M
]5 l. s) }7 E* I; J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( n6 X) A5 R5 p0 W" }
set global-reputation-list (replace-item j global-reputation-list new)
6 g2 ]! U0 h2 m  Wset j (j + 1)
  s1 x0 B  a' G. l% @; i  |) ^]# U# e9 r# K' T* f' p; t0 J3 m
end
* ~) {4 W! b- X6 w& J: S* A1 n$ T0 H
( g/ o# _1 L8 c1 q

" u6 G8 w) [4 U$ T+ G, {to get-color
& \( [6 ]  h0 N2 U0 M1 d" y& s1 @
set color blue

* |( O) t. H$ V  L5 Oend/ \+ Y# k- j3 X  r/ I' ?
3 Y. }. B( N4 v6 r  S* n3 Y5 A
to poll-class
0 L$ {* |0 A  Tend
( H% l" _6 e6 j% ]
$ `) d- D6 M% K7 L+ M: e# i: vto setup-plot1
; W& k1 D# L( G# {, _9 }& I% t( o2 O* \. {6 r, f
set-current-plot "Trends-of-Local-reputation"

& j$ y  g6 G* [, T( Y; p9 n& W2 e& P6 D
set-plot-x-range 0 xmax
# O, d. F, ~" y  a

7 Z( p4 ^, L9 n. E( }4 {set-plot-y-range 0.0 ymax
7 r+ |1 i8 O, \0 A9 c; |
end! f$ U  f$ X% k8 m4 k- o' o
5 R+ G$ M! s$ r' B9 s
to setup-plot2
% O; Y7 A: e& M9 w( N' Y- Z& ?) `
. b- H7 Q; k- ?% C; g: x" E" eset-current-plot "Trends-of-global-reputation"

- j. F6 v2 z6 S/ n1 n& j
6 H, J: N3 k1 a9 ?  p  i& P  X# Qset-plot-x-range 0 xmax

4 Z# j# @( M. y8 f
! `  e: _6 I& t2 N8 A, Dset-plot-y-range 0.0 ymax
& y! ]6 t. k1 u& ^/ s( i; B- e
end
* |. l8 }' k/ q% t/ k" N* v
/ Y) ^9 G: |6 t3 l% Z/ Qto setup-plot3
! W* U; \, W  p3 S# r: M/ V
) I9 R4 t# h. M2 V* W* qset-current-plot "Trends-of-credibility"

$ L- Z3 `/ T* b
# B9 D* ~/ E" {( e. O; o( Y( H2 tset-plot-x-range 0 xmax

/ b4 K8 [+ \1 f. _& q: j" J" R8 m6 F' J
set-plot-y-range 0.0 ymax

8 m- n3 J7 q" Eend
( h  b) ^0 |3 {3 E! f3 V
8 q6 z+ s$ s& N! I2 ]to do-plots& h/ ~1 f# u  A
set-current-plot "Trends-of-Local-reputation"' Q" Y, r/ ~* r, M+ c7 R
set-current-plot-pen "Honest service"
8 ~2 X# P2 r% [0 gend
2 Z8 P+ Y1 I& X0 ]: z! H
0 v6 p" q) o8 \[ 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.) P6 z$ v2 d' R7 M+ i

3 D* v5 T" r1 G" f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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