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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:" m/ x6 v& ?1 b& F# D
to do-business
! E! @6 h+ X# ~& x5 ` rt random 360
2 s8 s8 e: p1 f: w4 T# W fd 1
& n& l% ^2 U+ q ifelse(other turtles-here != nobody)[) t7 K/ `- [) N' j. 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.  y5 z* v# `4 M' L7 o" A6 Y2 P
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 n7 ^3 ?, l( Y! ?/ U  e
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# _9 T: A7 R, X8 i( n5 S; t
   set [trade-record-one-len] of self length [trade-record-one] of self
% l" ]8 u+ X% s- C* Z0 s+ j   set trade-record-current( list (timer) (random money-upper-limit))' d/ G/ b5 x& c/ y1 i7 ~5 T; b
' A: P- {& s- ^8 E
问题的提示如下:: ?/ M7 m% r6 D" a3 z* n

# V0 X5 @1 M7 h2 b: Werror while turtle 50 running OF in procedure DO-BUSINESS
" w% H* a+ I5 R  called by procedure GO
8 o7 L' q( I3 `  x; p! }OF expected input to be a turtle agentset or turtle but got NOBODY instead.
: A. [+ @- c8 S5 _- ^
(halted running of go), I7 |: U5 V0 I' o" {2 h

- V8 p9 C1 ]% A/ E0 ?/ w; L% J; ?4 v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~~0 h( l$ m( W" E  G
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教6 V1 X5 x" X4 {- H# V) Z9 Z$ c
globals[  A, m9 G& m6 h2 Z. Z
xmax
+ p- ^: s4 q. `( Q- a! V8 Zymax- f3 k  B, p6 E. h
global-reputation-list
* r& p& Y# l( Z$ O+ L6 @7 R+ O/ w$ |* a9 e
;;
每一个turtle的全局声誉都存在此LIST3 Z7 K5 M* q% f! i  b
credibility-list1 |/ J' N/ E% _/ }: |1 b3 T
;;
每一个turtle的评价可信度
' `$ D0 j6 z7 u9 L2 R% \( Ghonest-service. m" Q2 n% T/ B. C" y
unhonest-service
+ H1 E" K, ]3 b8 m3 E2 }% h0 I3 koscillation
% p& K9 X$ n, J" Q9 e& c: arand-dynamic
9 C* m+ _4 t2 V& l0 B0 F; _1 A! F]
  J0 \& a! D: E
7 @+ @# _6 L% sturtles-own[* a4 a2 x9 w9 q2 k+ C1 m5 w
trade-record-all
! q5 J' D# S0 R* Y# o% N3 J& };;a list of lists,
trade-record-one组成
1 w1 _1 A( E& ^' `trade-record-one
& ?5 J* B% _! s5 [7 ^;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ l7 s& g- t/ Z7 _( k- P: K- v! `

- `! u9 z, q/ X! m, y% A: X9 b;;[
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]]+ S; Z8 M0 n- E& c" ^: j! 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]
; o' `/ ]/ ?! [/ x8 ~* Ncredibility-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' ^& U% i0 xneighbor-total' E- z3 g) [) y0 ]: y
;;
记录该turtle的邻居节点的数目
: U9 v0 |0 p  v) l/ O2 w3 }, z0 }trade-time1 m- y9 K2 Z  P8 n" H  W
;;
当前发生交易的turtle的交易时间7 c9 t. O& {" l( T
appraise-give
# x0 j- y' N9 F4 k$ {;;
当前发生交易时给出的评价/ K3 n3 |( E4 o+ `
appraise-receive
& m" K# s/ g" `7 H' G$ T;;
当前发生交易时收到的评价
; P$ V# s: v7 r# J& U; y* Nappraise-time
, P) @; ^" @* T1 E, V4 P;;
当前发生交易时的评价时间5 B3 p; D# Z* {) Y1 p/ ]% x
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: a8 U$ K8 S  J$ u1 @trade-times-total
( E" K& ?' W4 H+ ^/ C' i8 I;;
与当前turtle的交易总次数
) w5 l+ E/ I1 _8 Vtrade-money-total
2 j6 O- r4 g1 o) d) c4 U% s) B% I;;
与当前turtle的交易总金额
/ v; o% E* Y' _0 _7 F, j7 plocal-reputation
; v" a% ^' W# S  x- I5 v* \global-reputation2 x. t* `4 H& D
credibility
9 s, h& g$ v& ^" c- F# ^;;
评价可信度,每次交易后都需要更新
5 X+ [  F( T# L6 ^. s% u0 i; Qcredibility-all% ^& E" L2 Q/ G
;;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* Y1 K- M( |+ U! b4 a- j
0 N3 C4 e  i! \0 _! \$ q1 w" v
;;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+ |0 w; M  E! t, ]$ E0 }( M
credibility-one
1 }. N: W& Q% ?, \;;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
, a: B$ r: X/ H, Cglobal-proportion
2 W2 c& e3 r4 Xcustomer
9 g6 v  P/ R7 I5 ucustomer-no
  A3 \: A7 S5 ^  F5 `7 }  \& U, Ytrust-ok
+ M: n. N: [  ?/ E- o# qtrade-record-one-len;;trade-record-one的长度8 D* o4 l- c4 A+ }
]
1 U" N7 w" `% ]+ p$ W# O4 y2 z; B" z! G6 t/ a  Y
;;setup procedure) t/ R$ f/ i. @4 V: p
% v. r: p4 h" J$ s- T! L1 H2 v
to setup0 ]4 T. r$ S6 u" p
$ }; b2 G( z: y" @1 G5 O3 P
ca
; v% P& Z7 H: k7 R6 d
3 k8 W. U; |! ^7 l
initialize-settings

  t, v3 F8 A+ l" Q3 Z, L8 Z; T' f* q9 o
crt people [setup-turtles]

3 g0 @0 l: E1 X, }3 J' k) L4 W# M
reset-timer

. r% `; l- K* f6 R) n% S, Y, H& A3 X( c9 F" F+ A
poll-class
' w$ Y0 Y% b5 D$ K' P0 c4 p. [
2 M% }7 W  B3 f( \) ]% i: ?) E
setup-plots

% R( O+ [0 U0 s+ e3 C' w& F
, x& _) K  a9 e# w; H  G% fdo-plots

& D* V; E: B$ Lend
  b- G: \4 l" J# K8 X
* ~! b- X% U" E. P* l( c3 ]$ J; ~. Pto initialize-settings0 O7 A$ c! W3 D

5 i7 }7 A/ ?6 Q/ }7 nset global-reputation-list []
0 x0 ]. Q5 A0 |) m! M1 ^# q; s

/ c4 Z- j) t/ z6 @set credibility-list n-values people [0.5]

) q$ [% p3 o# ~! l' }' O, D  X4 z. f% a8 k, S9 i
set honest-service 0

/ o- l: r* p, n& \) |' B0 m2 y4 d, N
set unhonest-service 0
( B6 ?) \: P5 p# K0 C$ _( J1 L
5 G/ p' ]( J" l8 Y7 U0 _
set oscillation 0

6 Y3 R; c4 N/ H5 V% O& p6 v) z$ {  W5 p
set rand-dynamic 0
3 A8 A1 t9 Q3 R- c
end$ E! l6 D$ `' p+ K: A9 P! F* L1 u+ }, E

" ^  Y% k% I, i* v$ qto setup-turtles
1 x) w0 m4 o- I- L% v. uset shape "person"* }0 u; C" l) n# p3 T; ?
setxy random-xcor random-ycor
7 g! W- D& \5 a5 {$ a7 Y1 Xset trade-record-one []
7 j1 H3 {" n/ K% m& a

7 r! {6 \' e' h. {set trade-record-all n-values people [(list (? + 1) 0 0)]
+ _6 z6 b; y6 [. I; J9 A5 |( C4 L! B

  x* b1 i5 E, P6 @set trade-record-current []
! j' E/ u+ O0 ^3 d" }: Vset credibility-receive []
+ G7 Z; U2 R3 _) }set local-reputation 0.5; M7 F1 a9 F0 Z& Q- @' @
set neighbor-total 0
' k6 a, a$ ?/ [set trade-times-total 00 E) k3 v+ D$ W
set trade-money-total 0
  ^& ]8 h6 I- h' uset customer nobody/ M) V  ^! o+ x6 J7 ~3 T9 K6 |) e
set credibility-all n-values people [creat-credibility]5 N8 v( x7 ^, W# W' O: g
set credibility n-values people [-1]7 L+ n9 i% v' e. B( n: `( p
get-color
, r0 P1 P6 A0 Y

0 B4 L8 H  I7 \; P2 c2 \3 u8 }end
; L, c# k4 x4 G0 u: {
: B1 g% @9 R) }3 R; Bto-report creat-credibility
+ \5 M9 U' E+ y  {$ s3 d2 lreport n-values people [0.5]
2 n+ S) U7 [0 h) |) M- a$ b9 Z# Eend
1 y9 m* g- L4 G. K& O) Y1 V6 `" b$ v4 u" e+ @/ Q( A9 M
to setup-plots
" H" P( E9 g; `5 X. p7 Z+ Z
. u/ H- w, S0 Z3 P0 p1 z& rset xmax 30
* c: O+ l2 @7 P: d
0 [. ], D' D; A  f
set ymax 1.0

0 q3 r" O8 L- p7 R0 c$ Y
2 t7 b9 ~8 k' B4 d9 E5 Gclear-all-plots

5 Z( |) M# X+ G& I4 S  j; {+ U" I4 T
$ \/ r3 l7 s; U4 E# Esetup-plot1
# M# G( |1 n" W( i/ L
) }$ }2 ^* o: I( l1 ?, k2 X1 g: Y: B$ m
setup-plot2

$ Q; {% s* P* \. c$ F% R
# g& b9 d+ r7 u. U  a# |# w; y+ Osetup-plot3
# A  e9 \) }( f
end* z6 Z+ k- ~! J- u* M+ B
3 N* I2 r& X( J0 F, T/ X9 ~
;;run time procedures8 h1 C* R: L1 c4 ^! Y: @# X

# D3 C; }- v( V: j2 K( q0 Z4 ?; E$ Kto go
) l% }. G: p  V/ D8 M, i. P7 s  C
ask turtles [do-business]
% F$ G: q1 t! q' e$ o
end3 v- i* N- m' w. V" v& o1 F

4 {( B5 T" Y1 `to do-business ! m( s9 l4 ~  @, r
% X! h0 b7 l* n7 q
, u4 i* J6 b0 q9 s
rt random 360

  c) t+ ?" E# \0 `
5 W9 @% g( \- Q/ e5 E# B) \fd 1
& d  V; K: @: X# z* Z
: r1 Z2 m$ U) D4 r8 y/ f3 _' z
ifelse(other turtles-here != nobody)[

- u# G) N$ n# w9 [1 y% O5 b
7 O3 J; i, n6 d- {0 Lset customer one-of other turtles-here
& [) Z0 r+ _5 r% g6 }

+ c" V; ]  D$ i6 E2 o;; set [customer] of customer myself

' {2 ^5 @  H. Y2 |+ e2 r! w* {- @! a; a; D
set [trade-record-one] of self item (([who] of customer) - 1)
  ~8 M7 O% B& }7 K& s9 _  _[trade-record-all]of self
( S6 _8 L/ \  D6 I;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; g+ ^) U, k' d6 g
8 k6 W4 W/ Z8 _+ l5 Tset [trade-record-one] of customer item (([who] of self) - 1)
, H( U& Z) V+ n* {% i  f- }[trade-record-all]of customer

* C; {; i2 _: l  b3 N) C+ ~4 x% J, N+ B+ |
set [trade-record-one-len] of self length [trade-record-one] of self

" u8 T( E, o$ L! }" i; Q& ]
/ z$ G( i8 D# s& _# D9 \set trade-record-current( list (timer) (random money-upper-limit))

# ]4 y5 n* p! d! m' Y  T' L- @; X( a: w0 D. P9 S9 T
ask self [do-trust]4 F" J2 D0 s& ^* i( i$ a
;;
先求ij的信任度% p/ F; H" s" r/ ?- j+ Z
0 {4 I& q' q; y* L) b$ h
if ([trust-ok] of self)0 z! P& e7 P8 v9 E4 W
;;
根据ij的信任度来决定是否与j进行交易[* n, |+ c1 m6 ~5 W
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 m: B) i3 V( j) N6 u# ^' n8 P: M( @. T5 |) M9 ^0 _
[
0 X* N" Y# b, g5 d1 j
3 [; F* C( m2 C7 E9 O
do-trade
% W# e1 B9 \' y' b" |
2 U  _* k6 Q2 ?
update-credibility-ijl
5 t6 \, b, E: A+ f( I

% c# F, B+ O9 Lupdate-credibility-list5 G* {4 O7 O! \$ E* u
& q9 q7 b1 O$ W1 n) ^$ F" L( c
, I  f; N9 v* U; J9 N
update-global-reputation-list
# w2 \. W/ D2 ]( F8 x$ a
% z) k- u: h$ C1 V
poll-class
* ?8 R0 W: u4 l8 _' [  L: @
, A( y, J( ]( Q* Q% ~) p, z
get-color

. c* f  N: g' Y* k2 P( b
+ t- I' g* O( U. ]/ j' l  N]]" h: F9 d( w9 F! f1 F, h5 P

  `/ t+ p7 z8 b/ W- ]7 T;;
如果所得的信任度满足条件,则进行交易  m( ~( J2 F$ `  H

. d/ ]. w1 \3 R+ A* x1 o[
( I8 c' I# `3 k0 \
0 Z, v; Z) J5 S0 P3 z8 S
rt random 360

8 J6 G7 Y8 }' e: J5 z
% G* ^0 o$ T: a* r* d2 D  T1 ^fd 1

; H$ `; H( s# V
" ]2 X% ]. E4 H& Y1 V. D# A# R]

6 P! C& Q) y6 Q
7 f8 a9 c( R  q$ |2 iend
, G' i9 t' `7 i4 G/ W# C/ |

# D+ P) W' ^% g1 nto do-trust / Y4 o1 I8 ]) N, G) ]( o
set trust-ok False
2 I7 M& L2 ]/ q9 {/ v! s
3 p: G# c% b5 F8 Y

$ e, }" x9 k! X9 N. `4 e1 t( D# Jlet max-trade-times 07 `% c! a( X4 J% T
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. t2 I( |8 e" nlet max-trade-money 08 Z9 C- H5 Z% j3 Y* }
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 [+ J0 D3 Z/ z( Y8 vlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) g, o/ B' i3 Z

; J; `5 c2 i' m7 B; l+ s7 ~8 U* `
! h3 S1 g6 V( H# ]
get-global-proportion
+ E1 X: t( a: [5 m9 ^0 Z8 @0 Rlet trust-value
( O& l  E6 G& d. X& flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

) e, c# l, Q6 b( g7 oif(trust-value > trade-trust-value)
1 J3 G9 K0 {+ k! t2 A6 E! ?[set trust-ok true]! r/ w. Z% M% K" ]" [3 W+ }& n( J
end
% i; A$ o$ u3 W" _
) u7 G  a! Y9 d1 Y& I7 H$ tto get-global-proportion2 \! p2 ^" g# B' n$ @
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! i3 {& }5 r+ I, o, m[set global-proportion 0]. a4 h# e3 Y. o; C. Q3 O
[let i 01 ]/ v# O  X- {# j, s; Y
let sum-money 08 b5 {; G1 O$ r. t2 n
while[ i < people]9 M: }" w# b1 D* G  B' e
[
/ L* P# {$ P  V& O- Y6 Q0 t; sif( length (item i% N9 ~( F1 a* ~; I- K
[trade-record-all] of customer) > 3 )

# ^( q% R; _. k* k0 O[
8 {  v) ~6 f2 X6 `4 Zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ z2 d- j  M& ?5 o0 }5 R5 o
]# n, w, B. h2 R( p9 x& `' Q6 x% t
]
1 P% ], c6 V- P& T! s& Ylet j 0
  b# p% C$ ^; _/ E5 i# ]  zlet note 0; Y  r( n  x" Q  ~
while[ j < people]! C8 B; ~! R, r" v
[
$ v, q9 V; ~4 [# `5 k4 y2 `4 bif( length (item i% ?4 [- g* B6 s( ?$ \  T
[trade-record-all] of customer) > 3 )

3 t4 T0 x7 A! U( x1 p0 d3 j* ~[" y$ n& A% w) L! o' N+ I
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# Q5 v  V  l2 u) F8 |- s[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 X5 r- x) Y/ N7 u
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 ?. k2 S5 U+ F; E* i]) u% v- w' Z! m) h
]
, g9 p; y0 V- Z2 L* Y9 [set global-proportion note+ I2 L9 G9 T; ?* d; _) [
]* p0 d. w7 F$ z8 E( }3 \
end" o" U2 `1 Y1 S4 x: X
: _$ s5 P. [! y8 E: K! ^
to do-trade
9 ]6 c9 {; c3 m" b;;
这个过程实际上是给双方作出评价的过程- l4 u8 c6 n0 {6 l& K4 }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 @- \  v# ?. W4 w1 y, A$ q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
! E7 z* o: J: O- P) X/ iset trade-record-current lput(timer) trade-record-current
! ^5 K( o1 t; D0 ~;;
评价时间1 q4 q2 ~# O; Y$ l) Y- x+ ^
ask myself [: j5 i) C2 B- s' W' ~* t0 P7 X6 K
update-local-reputation1 ]% j4 R6 D1 T. r+ E- c+ |3 H
set trade-record-current lput([local-reputation] of myself) trade-record-current
! J1 G/ n+ [& r" P- X4 }]
+ a$ @6 o% {7 n. aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
7 Q4 w' u% G5 h! r+ h;;
将此次交易的记录加入到trade-record-one" b# s, a, Q: l  M8 N$ D: v& ?) H
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 O! L: ?: f0 u0 ~
let note (item 2 trade-record-current )
3 e0 o" k$ V0 G+ w; \. p+ N& iset trade-record-current; X, v/ I* R; g: h$ g  n4 g# Y6 ^" b
(replace-item 2 trade-record-current (item 3 trade-record-current))

/ H7 b* j8 X& w  y( cset trade-record-current; ?  f) b5 n$ G" F# a
(replace-item 3 trade-record-current note)9 q1 p9 U5 B2 k& L( E$ G" V

  c6 `3 ?' I* I* x, r. Z, z- ^

8 o; V6 T; c( ~2 V( B$ iask customer [, |8 I. G( e4 @  {
update-local-reputation
' ~' y" Q) ]2 A+ u% _: k, Zset trade-record-current& [# \) w2 m. e
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  D& {/ K2 p7 J
]  Z- y! h' R! N- G+ b1 X  B: Q
9 i9 Z* g  S) a- t6 I" r0 @
2 Q' i9 j2 ~  m8 s; [1 ]8 U+ s, q# I
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 ]7 j7 T# A$ P( D1 m+ |. l; N
* w6 {1 r7 l5 y8 E: c4 H+ R( \- F
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 w! J5 J5 [# E
;;
将此次交易的记录加入到customertrade-record-all: @* j* }) H; n3 `( N4 Z8 y
end
5 ^& @5 q5 E( J; o. w. x" ]: m! q1 e4 t
to update-local-reputation0 {1 q7 j- i8 b" n
set [trade-record-one-len] of myself length [trade-record-one] of myself5 B8 V2 y3 d! K. @! Z
( V* k* x3 L) b! O5 h8 J
% _/ x* ]9 n, c) q5 `
;;if [trade-record-one-len] of myself > 3

! {* _$ Z5 f* O/ R% i9 Supdate-neighbor-total5 b5 B- b6 j" j+ E3 B+ Y
;;
更新邻居节点的数目,在此进行
6 D1 R' n  m( u# O9 p7 D! p2 clet i 3" X8 s" f2 J: B4 |
let sum-time 0
! \, y1 Y5 L6 G* awhile[i < [trade-record-one-len] of myself]
  V- a1 ^% {: n7 P1 X+ W+ `[' A" Y- E7 F" p5 G1 `4 H
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 {# w9 b- S7 z* Eset i
/ F! e- ^( R. j. w9 x: F0 L( i + 1)

$ [4 {6 F% o# n) t]- p5 F& {! j9 j* ^8 `( \
let j 33 M9 V" F/ L+ r/ |, c' E3 z
let sum-money 04 \  n( ~4 b1 C' j
while[j < [trade-record-one-len] of myself]1 c& E* D% L1 @0 H
[& [9 j3 ]4 i& z$ B$ A5 U5 j3 I
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
7 k0 e# ~9 `) z- v' b6 Oset j
: ~8 s+ p- |0 j# W7 V% [+ @5 b( j + 1)

8 f+ w9 X& B% O7 B) t1 C, d]
3 c( B0 O9 C8 s" }' t' Wlet k 3
3 @# [3 U+ S! I$ @  dlet power 0
9 L6 C* t$ F* ^3 S3 Hlet local 0* d5 K% [2 f. N
while [k <[trade-record-one-len] of myself]
+ K- Y1 N" D$ L' Z- z3 p[
5 o7 h7 e( r& e6 m8 @6 d% P  [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) : p/ ?1 d* E# s. x
set k (k + 1)9 I  [$ l- W+ l8 W. ~! I
]8 l- ~! [( d7 z+ `/ C/ o/ e, b( T
set [local-reputation] of myself (local); ]2 o9 Z! x( a+ F
end
6 f3 J& |6 `, l3 C5 [# p! r1 o9 _3 s, q6 l7 s0 R
to update-neighbor-total- i6 @8 g( }' b9 x0 u( C, A2 l6 v) m

% P9 ]- r  U/ L5 r9 d% t# T) vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- ]3 K9 u$ z/ a* ~, L  @
& p3 h& q8 Q% X6 Z& d

5 u5 \# ]8 v! R* o/ [+ _end' C# g4 c2 v( [" n5 T- Q
8 S* e3 ?+ M. w" j6 L
to update-credibility-ijl ) z9 `: V! I! h9 f" Q
# F! o$ D8 g# Y8 z
;;
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。
, U. w' \- d: \0 ~+ Q8 t! Vlet l 0
' l4 e! T/ k( [1 w6 e% mwhile[ l < people ]- L! \. d* X/ T( P* T# a
;;
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
, R  T& h8 {  D3 K& I& c[2 x/ z# F7 P6 K- L; F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  x+ Q+ q; Q+ c2 E# ^( F& Vif (trade-record-one-j-l-len > 3)8 z+ Q5 K" D: t( Y  G' E
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
# S' Q/ D! u! L/ Y$ T+ rlet i 33 e2 `' _5 C8 v
let sum-time 0
& j8 O- n4 r. ^8 g/ j" y- m# rwhile[i < trade-record-one-len]2 [4 i' B2 Q5 c
[
, R, \! A2 I% T$ R# P# F. x) eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! |4 v! B  ~& n9 B
set i- n  d1 m) J; c
( i + 1)
) J( E- ?4 y/ q
]' C& m0 _  h3 O0 q! t7 j
let credibility-i-j-l 0& p+ y( T1 D9 f" J7 r0 q
;;i
评价(jjl的评价)
- s1 q4 _, F% B- n* A- Blet j 3
, f! U. f4 z8 O" [4 Rlet k 42 U( T- q9 E8 Z4 g$ r" v/ R
while[j < trade-record-one-len]2 I% z' A" e/ x6 r9 X0 d  d
[
3 \0 _! c) `' g1 {: L& a. L; {2 qwhile [((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
2 h% L, r+ u" f5 ?  o0 M1 N/ \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)$ X8 C1 G$ }/ I- ^; M7 o
set j6 V0 m' m$ a- s# ~
( j + 1)
1 ]1 @* c. d2 @
]
( g! Q& M. n% S% O5 _7 R9 eset [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 )): |" a3 G% X% \# j

2 b$ x0 ~( ]0 h: M6 R

8 j6 W" o! d! l5 X0 Flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* F/ t& ]9 k) E1 G;;
及时更新il的评价质量的评价
7 h8 ~2 p& G; S: r# p6 iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( b% w* A2 i: f4 S# y& Yset l (l + 1)
" L* n& f/ m# L' e3 u! C]
+ [3 E0 _' J* O7 D* d  fend8 r& e0 e3 C# `8 x  I+ Z& p
8 h/ a0 q6 g( y' ]8 t, j
to update-credibility-list
, D' z( X# n6 \) e0 |1 k; {! t: Dlet i 0% Y% M( z8 j5 b+ Y- a- Z- d3 f
while[i < people]
& s3 @1 Y4 s5 F9 n4 t+ S5 D& Q[) ?! _0 l! P$ x% u4 r4 l3 u
let j 0
& S; n, I! T  o1 V; Ylet note 0
' V8 i2 W* N, ~  y0 ^4 ^let k 0' r' j( B0 s# Z$ G% ^
;;
计作出过评价的邻居节点的数目3 Y/ i; W: l9 s% }
while[j < people]! }; U$ h6 {4 m. U; @
[) R9 k! i' b& i$ N
if (item j( [credibility] of turtle (i + 1)) != -1)# S3 R/ [  O; b8 q+ L
;;
判断是否给本turtle的评价质量做出过评价的节点
& C4 {$ ~1 F' `: I- A[set note (note + item j ([credibility]of turtle (i + 1)))
: G/ A6 U; L$ u- Q1 s7 \* @. c;;*(exp (-(people - 2)))/(people - 2))]

" R) U8 k) F4 q4 U$ [. ?set k (k + 1)  [3 `# D( b) a: u
]
( D! [' h0 _7 H- f' |- m2 h  \7 _set j (j + 1)
4 A- Q$ N8 G8 x" l]9 m# y: N9 y$ ~5 ]+ v
set note (note *(exp (- (1 / k)))/ k)- }1 E7 C$ M8 t  m
set credibility-list (replace-item i credibility-list note)9 p: d" j* `' _
set i (i + 1)+ M, L, l( F. g  d( q
]* c3 ^( l9 Y2 G% @7 x
end
2 q; P' G9 a8 r( d: @6 N: Y1 x
7 Z# F  U4 n. `! b) C, N$ G) B# j8 q2 ~to update-global-reputation-list
4 ?0 G6 L, C. s3 Dlet j 02 V( S- }8 }4 j( N' \
while[j < people]
4 r! V3 }2 c, _3 n[. S. D4 A) p- O! }: F, Y* y, O
let new 0/ b# {6 W7 m$ a, M( @3 U
;;
暂存新的一个全局声誉
6 E# h. K/ E2 ^let i 0
( Y% T' `8 e3 v2 T7 L( flet sum-money 0
( A6 L4 ~) Z" g  M1 A# W1 qlet credibility-money 0
& s! j) ^% Q6 k1 e; O0 T; Ywhile [i < people]; G/ u- ]2 r* z' T! l
[
* r" B; I+ }# w1 ]/ G( b5 rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ P( o, |1 M% U2 G" K1 N2 D6 d. \, l
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 x) P$ y9 c2 _+ d; rset i (i + 1)7 E  p9 l; r& L: f3 P
]5 g- l* u8 A, W! |% ]
let k 0
* E8 ~7 A: P# elet new1 0/ b, i$ b8 w6 |+ e2 H" W' j
while [k < people]
' O8 u7 Y7 k0 r( D" H7 j- O[
* `5 K  ?7 j( [9 u' a, aset 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)
; V1 Z2 D$ t5 Fset k (k + 1)
7 D+ T' e& k5 H" }8 I9 s+ f6 }]. W1 ~  u$ |. U2 _# V
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 c1 z$ ?% a7 _: y
set global-reputation-list (replace-item j global-reputation-list new)
4 T. o$ V) C# Y  Q3 nset j (j + 1)
' k0 T" n3 X9 u  D$ C  S]
: A1 L5 ], C* z) bend
+ x8 S) k# ~) \% N( q8 e+ ?$ V, ]
0 M/ y& B% G" g, t! m. q! P& [4 I& f+ V4 j! D
4 l% x# x5 ^' T+ @
to get-color
7 a8 }% c* [" O% k$ q$ q8 v+ w. ^* L/ R$ d
set color blue

+ w# [; S' X- b" P/ A0 x; kend' k( W4 o( k4 e  R5 ^6 Y" A3 \
, u& j8 V3 p% O1 m, a* ]
to poll-class* O/ Z7 _& A' j/ r: `0 G+ q3 y5 K6 F
end* e0 r/ {; P- k, L  \

* R8 P" ?% F8 P9 xto setup-plot1
9 m" K  c! j5 }5 T/ F
9 V6 f  p7 ~" H3 y8 W& k' h5 F$ Aset-current-plot "Trends-of-Local-reputation"
* I  w' [& E! @

; e' Z) q# l& R' Oset-plot-x-range 0 xmax
: ~( _, D0 }& K3 O4 p& x+ Z- @
* n. R9 E& {" ^( C# W4 E
set-plot-y-range 0.0 ymax
; L6 c5 D+ R$ i4 G
end
5 y  ], ]7 X( i$ }* S  f" X5 `/ a% `5 S) u+ L9 u- O
to setup-plot2
& z) J+ |  R2 Q4 X. o3 Q$ ]+ A1 v; U- u& K( A% N/ P" h2 j
set-current-plot "Trends-of-global-reputation"

- W3 f. j9 }6 C% m9 y1 X% T+ n5 g# c! z! J
set-plot-x-range 0 xmax

5 v$ G6 ?2 U- W& m1 o% E+ D( [4 e) K2 |
set-plot-y-range 0.0 ymax

+ H# ^/ v+ |( jend
1 P. D$ W; @; p3 d- ^8 a
$ e) J) `. F/ Ito setup-plot3& u  X8 Z$ h" u

) ]/ f3 r7 X- Q% K, w" cset-current-plot "Trends-of-credibility"
8 J* z8 V. N& O$ ^+ j; g

, w( V9 u: H# T( X" Aset-plot-x-range 0 xmax

- n3 D% D- q& c# p6 J, t/ ^, b- R3 I. X: X# f
set-plot-y-range 0.0 ymax
3 b3 D5 Z" e, T! @% y
end% m" }/ s  b* l2 e1 n" G9 c- `* m$ l
, ~( F# @: {; g
to do-plots
( x. f; ?4 }9 i  C' \set-current-plot "Trends-of-Local-reputation"
" t  P/ f/ ]3 z: }& `0 @7 mset-current-plot-pen "Honest service"
) c5 t* D9 D9 v, Q- vend
6 R3 N( `* g% I2 z3 O: L9 L5 l& Q2 Q  L. c
[ 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.) P; b3 r: e$ C
8 L1 S0 B2 [; Z
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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