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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 d2 o3 F$ m0 H# X1 |  Z7 o; nto do-business
! l7 b6 J+ G& g# D rt random 360
; D4 t' O! t- T4 U( L" n* i fd 1
* k& V. h5 j9 L% ^- ` ifelse(other turtles-here != nobody)[
: f  r& i' H+ `" V; z& H   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.5 _7 c" A- l* T5 n* n; x/ v: s: U
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " G, m2 U) L9 e6 S8 e& V; f
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! Z7 r- f0 d- j  ~   set [trade-record-one-len] of self length [trade-record-one] of self
4 f9 {3 O! X' u# `, U+ j   set trade-record-current( list (timer) (random money-upper-limit)), U4 U- A! s; v* N# P' N
$ a% q+ T' ~# K+ O. u2 _0 k! x
问题的提示如下:1 R" ~+ t6 M) V/ O4 A4 `
( k: N8 B9 S' y
error while turtle 50 running OF in procedure DO-BUSINESS
8 b: P4 ~8 O# q8 T  called by procedure GO4 p% V& @6 J% y0 p. H" V; @
OF expected input to be a turtle agentset or turtle but got NOBODY instead.7 j' M$ E3 t" a" p2 _
(halted running of go)% e' V7 B4 w' C& D
% R  P& T5 k+ c) 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~~
' T# Y; @4 f& i( 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
. ^7 ~9 l0 O& e2 d1 K$ l$ k( Y( }globals[1 H! ?) j7 N5 \( m3 O
xmax# c8 n0 B3 ?  a# H
ymax
; s% \- O; E& x- s0 Vglobal-reputation-list
/ W: i# T! O2 |+ H$ O0 E4 f! N# Q# z+ g1 i8 Y; Q$ l; w) D2 n# D
;;
每一个turtle的全局声誉都存在此LIST
. V  x$ Z: K% }/ I8 Ccredibility-list
0 c! F) r5 c  n2 z! e;;
每一个turtle的评价可信度* V' n) R+ z! A, J4 B9 i8 V+ G# q0 r
honest-service
0 J2 o1 t! i% H! w+ Qunhonest-service
! g4 C8 O! X( y: U9 Y/ [0 @0 P' V+ z/ Xoscillation
; b: B7 l7 R) f" L+ O+ y/ Crand-dynamic
( K5 x# s( [* p+ E" ^; o]1 Q% H/ [7 d, d/ W" N( l. ^
- q) C1 Y. N: M( |& T2 v& r
turtles-own[+ R+ O3 ^2 P  T+ I* J
trade-record-all
( T2 ]" V# W' x6 U8 T' C;;a list of lists,
trade-record-one组成6 h3 f3 J) b4 U2 ?
trade-record-one
& y+ p) e& j$ ^  ]4 q5 M/ @" g;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ ^1 ~) o# J' t6 x6 b" L
; ?, X, ~$ o! A5 \) k3 P2 ~8 b5 };;[
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]]7 O( i  i3 w3 S7 _) R& j
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]
5 J' r' H2 _1 G3 bcredibility-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
7 ]' l  b7 ^8 L! A/ N0 i  h, }5 ?neighbor-total) M/ _  x' v3 ^) y, L
;;
记录该turtle的邻居节点的数目9 }: V9 A% B) m: B# x, P
trade-time
: [! s7 [+ Q( X: T8 [2 f;;
当前发生交易的turtle的交易时间; F, a/ y7 V7 p, o" [8 j
appraise-give( A/ g5 O% T% e( Q- ~+ A
;;
当前发生交易时给出的评价
" N( X9 [! e( _: R$ t3 \appraise-receive
4 Q$ U. w9 V1 q$ U;;
当前发生交易时收到的评价
: r  C  J' P  {3 |2 I5 Wappraise-time: h% z- W% z2 _5 I+ ]( s
;;
当前发生交易时的评价时间
* q5 V# x* [% Hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 ?4 b% l; y, L2 btrade-times-total
2 S+ g' }) Y# @) e6 J;;
与当前turtle的交易总次数
# U) G7 N3 z7 v3 W5 M. I$ i4 ]trade-money-total
, K1 o  I4 Q7 ^. o" ?+ l# E( Y;;
与当前turtle的交易总金额3 G6 D5 h# d7 d3 X6 a# K! [
local-reputation  B9 d- P: d* f, H
global-reputation9 _: z' b* E  C9 o
credibility0 z5 R# Y( U9 v9 [0 D7 x
;;
评价可信度,每次交易后都需要更新7 A+ S9 a/ j- s1 c
credibility-all
7 Z; f( g8 {8 }9 L# [6 R4 ]/ h1 G: q! V;;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
9 N0 ~% }2 H+ _* P, q8 u& Z" d/ x( `0 E" z) w/ N( x- b
;;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! \4 C% m! ]3 |% x5 A* J* Y
credibility-one% ~  ?, W: Q; w8 x7 m1 ^2 e
;;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* O) n3 q2 J. x5 J0 t
global-proportion* p* m; D# N2 }
customer! l$ o$ u& Y4 k, |" K# I9 v4 M  i
customer-no
+ O1 f" P! p) I$ D! Q- d; Qtrust-ok* r* Q2 s' V! H1 w2 A
trade-record-one-len;;trade-record-one的长度
2 B* x' W* f6 F6 R]2 F4 \/ l5 u+ F& w, P
' _2 Q! s7 l7 ?1 o2 \) N
;;setup procedure
6 ~& R! H5 g) ~' y% ?6 E
) t: R7 X. o: ~( M) G( @to setup6 ]: Y" I; P" |  u% C1 M/ w7 u
) {' Q3 F6 U9 u0 o6 |3 z! s
ca

0 ?1 ?) ]. f; w* m+ K# ?. f6 @, a- N, Y, Q) ?
initialize-settings
3 Z: y* B1 ^8 g' E9 i  ?) h
% b- Z3 ?) \  l( G! w2 z7 n7 n
crt people [setup-turtles]

8 L7 q. a& N! E! v5 Q
0 O$ h  r; Q! Y. M8 n8 hreset-timer

1 E# E& s: K& o. m$ _5 u) ~
$ t( V) c3 ]3 b3 r& E6 Hpoll-class

3 G( ~! b) n( D
+ ?4 L% e) \% V- M) u/ P5 @6 y- Zsetup-plots
7 `" n2 t7 G" s, o( z7 c

! _: @) `3 j; k0 j# e" C; mdo-plots
% c0 \; G) V2 |1 r( Q2 {; t5 G/ e" B9 P1 B
end' \1 ]3 u3 `0 d, C5 [: A1 c; u

% r( |2 t' |3 l1 Tto initialize-settings& t- @3 ]7 {; S4 u3 Q
. Z6 ]: J( J2 h+ |  A
set global-reputation-list []

6 y- R' I4 _) I6 ?, Y9 {# e
! V* @8 @- K5 v  h) ^. gset credibility-list n-values people [0.5]
+ }, v/ U# M; w  T# `

! L+ A; V$ h" `1 u$ @) G* {set honest-service 0

5 J; W/ Z: a8 J( O
& n: M$ a4 v# O3 `) Q& N7 {5 s6 `' Lset unhonest-service 0
% d, u3 x4 f  b7 o

/ `  q$ W* |# Fset oscillation 0

/ o% L) o% y2 j( x* U- d/ D- V$ S' ]4 D3 t. H+ D: P
set rand-dynamic 0
$ b, s1 u3 x, ~- G/ |2 l1 m
end% X% X5 p) ]- H2 S" M# y
: f* r" m' q. |1 H7 ?, b
to setup-turtles
  P& c1 `, T7 }6 a3 }% f, R' |set shape "person"
* J! Z! @" U6 \6 O6 }setxy random-xcor random-ycor) b) k$ X1 b2 k/ w; p9 k; k
set trade-record-one []- N4 d9 d  y& d% s. r5 j  B
1 B0 h7 V' R8 L7 H7 K: L5 v
set trade-record-all n-values people [(list (? + 1) 0 0)] % A1 A& z* z3 S2 k2 s

! \9 |, I( x4 J. j# v7 m  Mset trade-record-current []: f7 B/ f- X4 o  i* b7 w
set credibility-receive []
+ O2 _7 I, a7 Z7 Y, rset local-reputation 0.5. `# G$ K) S- D" @8 [) f
set neighbor-total 0( W7 P1 j6 n( J# {' Z' i* {! z5 I! T
set trade-times-total 0' ]8 e! o1 N) y, K# B
set trade-money-total 0
9 h$ h5 X# B/ w" Q  n1 H- Yset customer nobody3 n  Q6 z1 p+ ^  X; s
set credibility-all n-values people [creat-credibility]* g: z3 l  y8 {" V
set credibility n-values people [-1]# l4 J- o2 Z/ X# b
get-color
6 S/ h+ k' _8 O4 p8 v' x

( Q7 Z+ m1 o1 N8 K" L& C, y% A6 oend- z2 r/ l! ]: L! h

# ^) l. T0 B% ~* ?  O2 ]to-report creat-credibility
* I& G+ ^6 l7 q- f+ Preport n-values people [0.5]5 D) T* ?% T1 M. M+ ?& K
end
3 a9 V- M/ _6 q% |( H; M) \  z" D
to setup-plots$ w* [* n7 g/ I" ^3 S+ ?
5 k9 F4 S9 Y, d9 q1 L
set xmax 30

5 X1 l$ L3 C/ m6 N4 n9 V
7 W4 d0 k2 }0 vset ymax 1.0
& q" l# h4 Z+ Q! e6 Y

$ `: k; S9 {6 M1 c9 c9 g$ Xclear-all-plots

& Q) H* j* M  }2 M) Y( E( @) h' b, s  {' e- o$ C! o9 r) ?& I; l/ b
setup-plot1

% r9 f; G1 _4 p3 X0 k: _
! J5 @7 y  w* V2 B# q( i/ r$ {$ Isetup-plot2

2 M: y9 v" L9 ~! }# b# @
3 x7 j" N+ u' y: @setup-plot3

, C2 h+ x7 f7 g3 tend
& ~0 w, `! ?- ~+ G2 A& W
5 S  N: E# g1 {$ ]% I7 W/ G# A;;run time procedures- q( W" y, I1 G" B' c2 V* F
( |# t! G3 f, J
to go
" ~* o) ~; k( X' }  i! e8 |
1 ^/ e! o3 B  Rask turtles [do-business]

0 x* T( J0 r0 y2 Cend9 M0 |; L2 O4 Z  M

% v. S& y! O. |, n/ q7 s0 p2 C* I% sto do-business 0 x# u/ M  W2 |# ^

; B& z% y# {* L9 @) u! K8 o9 h: w: Z
rt random 360

/ W0 S4 r) D. t+ ^) x. {7 F( R% \# I. N  b
fd 1
; h7 M3 q  n# v' y9 p0 H: w

1 \9 e# U% L) x7 N' ]" S$ lifelse(other turtles-here != nobody)[

: f: ?/ P" f9 l% e+ G
# ]* n9 T" Q; p5 bset customer one-of other turtles-here
0 Q6 s- o2 h: {, W$ u, X, N( r3 [
" t1 o5 ]0 J% B4 n& d
;; set [customer] of customer myself

1 `3 s1 P. o0 t4 J# W2 T0 ?; q4 V' ?) B! G
set [trade-record-one] of self item (([who] of customer) - 1)0 ^, X# A& f! L4 q$ H
[trade-record-all]of self: M- S0 ^# D& z/ d) s8 K
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 s7 x, H1 q# Q7 r  e7 L
: Y0 ?- Z; ^' d) ?& P# dset [trade-record-one] of customer item (([who] of self) - 1)% U  v2 M* i% ?  B1 N5 Q
[trade-record-all]of customer
  |) {" s+ u1 p3 d$ o* z5 B

4 Z; C- g$ o0 v* s; O" dset [trade-record-one-len] of self length [trade-record-one] of self

/ D2 X, E4 c. N: R9 p- D. _
: R4 b2 ]4 u, m3 u& `4 ^! \set trade-record-current( list (timer) (random money-upper-limit))
7 I. V& w% L4 b( C. Y

2 h( ^! p1 a, O# {, ]! ]; Iask self [do-trust]
0 e6 c, u. K/ V) x. D;;
先求ij的信任度
' t+ J( \  M4 c6 S& A, {8 d( l4 U0 r: s" i" @1 f
if ([trust-ok] of self)) _. @' b# s4 H# a2 s
;;
根据ij的信任度来决定是否与j进行交易[) ?2 X3 y; a7 F1 w6 A; ^
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' h# r, ?7 Y, t' `( O6 B' r! [

" K: ]! R0 @# s. a) _[

% F2 t) s* _2 R& T
* f; k$ S/ [4 y6 o$ Ldo-trade

# q& A- @7 u% q% s5 n4 U9 f3 s: h; e* z" n; _5 E5 Y4 N6 T  S! n
update-credibility-ijl
5 i: l+ N) p2 E1 p, \

8 e! H4 r. N2 q: Xupdate-credibility-list
9 U4 ]* y8 s2 b5 N( {
2 o7 A$ \" J4 v) A

. {- X' h/ ~4 Z+ l. u$ F1 p1 B' {4 vupdate-global-reputation-list
, c% _" T7 Y$ I# _8 u
, a* c4 C2 Y8 N/ u& O& }1 W
poll-class
: m# F6 T& v2 F9 u
0 p  L& j' I) s  N
get-color

3 G8 Z& z" i% |: X+ R% \- g% R7 f, S9 Y$ A6 U# G
]]2 Y) A4 T2 v5 H& F. k2 ^

& G: p8 w4 v( M;;
如果所得的信任度满足条件,则进行交易% F3 \$ C+ [3 I5 E5 U* S2 ?& @
% @  T5 K  N( t) K1 d+ Y& z! p2 e
[
3 E  L' |6 p1 D8 P2 v% D
1 @" m7 \" I  h9 \. z( K
rt random 360

3 n0 p4 W8 ~7 ]
/ x9 O$ w8 m, w' {: Y- H9 ~* jfd 1

7 s9 N2 a% w. S( v
7 z) ~- K6 t# [2 q0 m]
1 T( l1 Z% M1 [  O. E/ c3 h! v
7 R' M! N+ `9 c$ h& j7 H7 m
end
/ [  I" v6 H2 O) p7 c, F
& B8 M# D$ E/ f0 r3 Q) F! w  D, ^
to do-trust 0 U% K2 P( E+ M/ r: y$ T5 D. p# L0 p
set trust-ok False4 s, Z5 u7 Z/ L: Y0 A- _! e

+ K4 a+ q7 Q9 j3 N0 H( r

: E, a% _+ m9 _( }, Glet max-trade-times 07 E, r4 J2 |( Y4 U( E' w* y( X, s
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]  q% z$ i1 l& c8 f; I2 ?6 j
let max-trade-money 0
6 u9 U  V$ U( Y2 \foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' h- f4 r/ @  W. v) }7 g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ j4 }3 L0 k. F  y& {; P
9 G  n% m( Y8 e- ]: p9 Y
5 _( w0 h0 t6 G/ k' k* \  h
get-global-proportion/ f5 h6 s: Z& m
let trust-value$ D1 v- N4 O4 R" k& q* `* a
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)

3 S4 v. r& q2 w4 }' U; U: B) @if(trust-value > trade-trust-value)' I% K5 W1 q/ m
[set trust-ok true]
) R! N8 f* X+ }  B- ~; n# rend
; q7 z9 R. Z4 F4 r, g' s
) H' ^! k8 o8 cto get-global-proportion
# k$ L# c8 i$ v9 B) f: d  Vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: v4 R  `. N- w[set global-proportion 0]8 A0 o# b! P0 p' R% L  U+ @
[let i 08 J# o! }0 K  A& ]4 D% `' K  r
let sum-money 0' m, c/ z9 o7 z8 O( \
while[ i < people]8 B6 H5 m) T8 m5 @7 K
[
9 _  P! f4 c6 _2 X0 d" t2 Hif( length (item i
# {5 ^5 W- i5 p* u) A/ w[trade-record-all] of customer) > 3 )
2 N. V8 V5 g( l. D! N
[
. B, v6 T' R! \6 X$ Xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 `. F# K2 n5 C, @& D8 t
]
5 f! n) E- m. W9 h, z]
- ~5 r: F' O) {4 {' Q* D) }let j 0
. A% M, {( W& b: b- d$ ]let note 0  A$ m$ z* h$ J9 c, O3 D
while[ j < people]
3 t, c2 x* [- ?( G[
( z6 C3 a* U* Y0 K9 Y& cif( length (item i4 W# v$ M7 K2 o3 W. _
[trade-record-all] of customer) > 3 )
6 g% v! y$ u! n. u
[
% W; |  ?$ m- ]) ~ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 A/ Q6 S4 K3 B& r/ p+ M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  }3 d6 d* |. u, B8 G
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], }4 W1 ]: d% G" o/ f
]4 j/ O; ^. }% X7 \) m  m# H
]. A1 k6 D% ^! f, k* V% ]
set global-proportion note4 ]: p& d0 M& D1 U  J( l* u7 d
]
; D6 {1 w1 @/ L  A: g) Zend$ L$ Z1 C  L/ L) k
' z9 S1 \( N2 r9 w
to do-trade
- q9 l( N6 E0 n1 l. A! y  {;;
这个过程实际上是给双方作出评价的过程
& j5 u5 R: z3 y( Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% T+ H8 Z% }- ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
! i2 a+ X8 l" F$ aset trade-record-current lput(timer) trade-record-current
+ o% r6 g% F8 I+ _* e0 J5 V1 I;;
评价时间
, n. \1 {1 X; O6 _ask myself [
3 ]$ A/ Y- Y' a8 S; Xupdate-local-reputation& G8 w% \; b% x8 h5 w
set trade-record-current lput([local-reputation] of myself) trade-record-current  I3 C+ D/ P5 u8 p& H
]6 h4 c, R& c3 G9 {' \/ g1 k
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! P2 h1 y- b  c;;
将此次交易的记录加入到trade-record-one
! ^) S2 G4 G, O1 Tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  y  z/ [6 k1 {2 f0 zlet note (item 2 trade-record-current )
. Z* g( G: \3 e/ rset trade-record-current& ^/ e; R+ a3 j1 `
(replace-item 2 trade-record-current (item 3 trade-record-current))
% U' e/ g& b% g5 e& g2 S
set trade-record-current$ N, C. I8 P" V' c3 X( k( _
(replace-item 3 trade-record-current note)$ W, m5 r) i# N& [
1 ^8 |1 [) g, m7 L! L

. Z: ]% _  \1 E  \ask customer [. N. J; f* c/ X
update-local-reputation
! `. b% Y' Q0 w6 x/ T& Qset trade-record-current
8 @; `. v1 ?1 O, p; o4 Z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& m, C- \: C+ _: i; v# Y8 N]. R7 L) A3 ^: m  \& r

# k/ _- Z6 R% ^& R6 n. p. j
/ c( F" c/ @% A8 v
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' k8 W/ J  I. F- t4 c. k/ H

8 Y/ Q: [5 n$ i  I7 K. b) nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ W) |, |6 K7 i1 J, N/ @# G  r
;;
将此次交易的记录加入到customertrade-record-all: S0 R8 B; O5 A# q, R" D+ d  i
end
  a) e2 N/ _$ w+ r
/ U4 J* w4 C$ ]6 D/ ]to update-local-reputation
% B4 [$ a1 X/ b4 Y: t2 k& Lset [trade-record-one-len] of myself length [trade-record-one] of myself) {) l4 m/ J" i( W+ L2 v6 P8 a9 R
* d- {" }$ e: w& t, c: \
4 Z3 _2 k% \5 F) J5 `5 i7 h
;;if [trade-record-one-len] of myself > 3
$ v8 ~; A' J( I* _
update-neighbor-total
4 u3 Y+ ]4 o2 V/ s;;
更新邻居节点的数目,在此进行
" E$ f# i% n8 d( x9 e+ vlet i 3# \) \+ w$ Y, ?! u
let sum-time 0
1 D) ~3 z+ d( J( [% q: H7 g6 {) }( mwhile[i < [trade-record-one-len] of myself]
( z' J6 V- l& w9 M; _4 H& s3 R3 J5 G% p[
. K# x3 Y7 o3 @9 ^/ Uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 F; {/ d# C. M% ]5 V; Sset i) W4 a9 F8 l! z# a7 D
( i + 1)
8 D! X7 }* E; w7 ?. g: n
]5 e" p: C$ M3 I6 v
let j 3, a$ q- x3 K* |
let sum-money 0
( Y! _, C* [8 O, [7 @* Rwhile[j < [trade-record-one-len] of myself]) B$ T, F/ ~. B- B; q
[
* N, j" |  [' o0 ~. R; O8 A) iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time): X8 s( F! `: ^5 `% N) O
set j2 h- l& r! s1 q+ W- n& L: w6 h# W
( j + 1)
; T  |7 f4 Z; H8 U1 U
]
" r+ b3 n5 \9 E7 Rlet k 3( ^8 l  s+ p+ ~' W, }# o
let power 0
, ]1 z* V- g  g7 \let local 0% l0 I  M; z) K7 F8 G& Y; `$ J
while [k <[trade-record-one-len] of myself]
4 h! M3 W+ ^; Q. N# [[2 L# \1 `7 k2 u0 @: q4 N
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) 8 q2 }  P8 Q  k! s7 A. ~. |& L
set k (k + 1)( u+ \. X3 h$ g# m* T( V
]# u- r3 S; a8 }$ O1 H
set [local-reputation] of myself (local)
5 g" s3 @( `: m& F, ~end) v8 e+ B& O. P' c

6 b: g8 w6 ?4 {  Zto update-neighbor-total2 z/ ~- W; }- ^  p1 z- y0 V
+ }* A* I; O7 h
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# l/ U0 E8 x4 C  a- w- {4 a6 u
: b  U) {  I0 X7 l8 v
, f9 ~0 g" h, V
end
0 G0 c2 O9 i5 f4 s* Z* U1 u  F' H- v" N2 j' y! U' Q$ q
to update-credibility-ijl
; J7 S, \" b+ Y) ~* K7 G1 \" u7 d; B" I$ `) p; l: Q7 p7 @
;;
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。
0 O6 Z) G' ^& P7 V' flet l 0: ?1 I' C) o: Y( O2 v
while[ l < people ]
9 |& e: B0 q! ]! W7 V8 w;;
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7 B5 b6 k2 x8 [) K
[
0 I) b3 c) r  U3 W& ?; alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 p7 e: m1 s* M: y6 o$ Tif (trade-record-one-j-l-len > 3)' f/ E8 x% {0 a  a/ e* i
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one# u6 z# T/ v8 G' [" h
let i 3" A( @$ G# p6 H3 g9 w9 m
let sum-time 02 |, b' e! b& C! l2 A
while[i < trade-record-one-len]
" J' Z4 |* b+ G& s; W+ ~) X0 }& `[
0 m. r- J# O1 n; hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 Z$ w% C+ w; n- ?3 H2 h* Y3 Lset i
: |/ ~6 T; M" e( i + 1)

  W6 q4 O, ~( Q$ x  @* O]: Z- A, a+ m, S
let credibility-i-j-l 03 y1 F1 P/ f4 K
;;i
评价(jjl的评价)
& [! [7 E' q) H8 }- ^2 d0 s, Ulet j 3
$ s# v$ v  c% E+ T4 \! \let k 4# k/ a7 g* D6 j# z
while[j < trade-record-one-len]
7 q. C6 v5 E7 n" R6 Q[; ?4 i/ O; \5 T5 C( G7 \& a2 l7 @
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉: }, c& M: |$ ^- P8 |
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)
3 {, a1 u5 ~( v' n% N+ P7 K1 B3 r! Rset j
1 @( k% |: @& ]$ H1 a( j + 1)

- }# }" R7 [, Z9 S- ]]% t" v8 B. N% i% H" D
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 ))
+ q% W' f9 X# k) V7 p, M. v9 n; y) f3 k( {: C1 r: D4 M5 T
  d. q8 m/ T5 y) r1 `  b
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# G; m: ?5 D4 g4 t4 U! ]) n;;
及时更新il的评价质量的评价$ a  p* b9 Q9 e% b
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 E" H6 S; Y7 |/ Aset l (l + 1)
' {8 Y5 u/ g* _! Q9 f. d]! j6 Z5 G, y% S$ |" l! k
end
% O* W% t0 h3 G8 V
% @; H: N- u: \7 h  W5 o) [7 H) Cto update-credibility-list0 z0 W$ p- ~1 u0 w+ g8 T: S& u$ S8 m
let i 0
4 a5 V  M3 I- U3 W3 W6 nwhile[i < people]; I( Y9 h) ~1 g, b; w
[
$ Q' R  P2 P0 I( t; m9 I8 T9 Clet j 0
4 d! i% C: V. d; I' ?$ p6 u0 x, W& Tlet note 0
3 x) l7 o6 Q' K# U7 Klet k 0
; e% T) l3 \9 n: N;;
计作出过评价的邻居节点的数目/ R# f3 \/ c0 T" S* J. P( G
while[j < people]% x0 J0 s/ a" }
[
  S% M& O8 A. F# Z- d$ Wif (item j( [credibility] of turtle (i + 1)) != -1)8 w( C  l: `( S" `1 U. r
;;
判断是否给本turtle的评价质量做出过评价的节点+ o/ H& q! M" [$ Y
[set note (note + item j ([credibility]of turtle (i + 1)))
: h+ F( I9 ]6 `+ v: a( o* [;;*(exp (-(people - 2)))/(people - 2))]
* `; X. A+ O  a  _$ J5 B
set k (k + 1)! y* w  p' T6 ~' S. n
]
/ F- p, o+ C9 t6 S8 y5 e6 B1 Zset j (j + 1)
  M% M' d% B& v1 ]9 v7 p9 O: Q$ V]
. ~/ u( `* l2 V8 Q) E$ m! M+ Fset note (note *(exp (- (1 / k)))/ k)
. w& G# ]6 n+ e& B9 w2 e- vset credibility-list (replace-item i credibility-list note)
" Q. L" s; I# }- m7 E% Q  Kset i (i + 1)0 _4 ?3 a8 Q! a3 H( z
]
& r. r+ _* p9 z- x6 S# a5 _end5 L4 B2 t& R7 w' g: P% A

1 {5 C6 E0 `* `2 yto update-global-reputation-list/ e9 v& N: D0 @
let j 0' Q: z% I, R4 N0 G
while[j < people]
+ A1 a' i: E5 \  k2 O- O[
, S( H3 ?# `& @let new 0
+ O" x; X  j$ v;;
暂存新的一个全局声誉3 Q( s: D2 N: T" ^+ p, g4 W
let i 0
* M. v) L5 _4 z9 W2 Blet sum-money 0
( [& E4 q. g# ]1 w, Zlet credibility-money 02 Q% |! E! l" ~9 ?4 p
while [i < people]
  |7 l! ]  D* h8 u0 A[& |, l: p/ g, ~+ D% r
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 Q6 k; N; e, c* ~/ |& s% c& v' O$ p2 [
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 Q" W4 Y$ `1 f7 E1 N% D# Z! }set i (i + 1)
  U. v" c3 u0 }0 R& F4 c]
9 |* x* Y1 r( a, Wlet k 0
. c  q8 E) `) q+ }3 V! ~# Mlet new1 0
. C3 \: E3 U3 hwhile [k < people]
' R& @) m6 C& x& J; E1 i6 e4 A[& c: o8 G/ o* m. h; 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), x6 ~6 B4 X; v# L$ t
set k (k + 1)
8 ?2 L2 b8 e4 O3 ]5 q* I]3 B& U) r0 y5 w: _
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 }" K5 j0 i2 t4 S9 e% q* Z$ Qset global-reputation-list (replace-item j global-reputation-list new). s* u7 y8 ^0 J7 Q3 D7 d
set j (j + 1); W4 k, g! C" ]1 v0 e+ o
]
: T" e5 E, Q; X, U( Bend
$ U+ F6 d/ P; \2 ~3 a+ c# Z, c* L6 g+ d2 L  Z" M  ~
7 G1 K8 E. M# g- F
: \/ L8 P+ ~  [
to get-color
# d/ R, Z" z% ^
- u7 F* R& N. D- |/ [set color blue
2 u+ o! ?: G1 y5 Y& ~& z! F1 C
end
$ E7 m) Z" ^" H& H
5 R2 C; w3 f1 B+ e! }to poll-class
( Z+ ~1 }  m) A2 Iend% V; \6 j) p- I# I3 Z: T# y
" g* c0 ?' B4 V
to setup-plot1
3 U! U+ M' Z# ?
3 d- q. ^5 ~0 @/ A; `set-current-plot "Trends-of-Local-reputation"

& ]+ E9 g; V0 _( i1 o" N. g
% Q. Q# l; k0 O2 a8 vset-plot-x-range 0 xmax
) L$ t  w, v( I+ W  }% E+ ?
; }1 B5 `2 X7 b) Y
set-plot-y-range 0.0 ymax

8 j7 n* q+ }* Q) ^+ S% ]* a' @end- ?0 }: X( T0 U  m4 L: u
  a/ A# {+ l' d5 \; f6 w* G
to setup-plot22 \) l0 S5 v2 H

3 ?+ ~7 w$ {) h5 t3 Oset-current-plot "Trends-of-global-reputation"
: J/ M. B$ x3 S. F0 r7 R" R
! v' b- _1 r4 B3 Z
set-plot-x-range 0 xmax

  v* w# j( a) F, M7 N8 m
' `' K4 o( Y! [$ V2 I1 [  Nset-plot-y-range 0.0 ymax

( b5 k  B6 c. B1 o  qend
! W( e) r, o, z9 \2 y
1 ^8 L( X+ |. ]- ~, P; yto setup-plot3& H* W5 i9 s9 f' U( g2 E/ N
* B$ R$ {2 k4 h7 v- V
set-current-plot "Trends-of-credibility"
  n; W- V7 r0 Y5 E

! L5 y# f" Y7 L# l' g6 mset-plot-x-range 0 xmax
1 Z+ s7 R1 n9 A9 ]
: [1 o5 |/ ~8 |) s% _6 r" L, r) q
set-plot-y-range 0.0 ymax

' H" ]) u& \% D$ ^& A; yend9 v; I& \' j7 ~

6 R( |9 c4 D$ o8 r3 f3 v% H3 U  Wto do-plots) O+ J5 e& S; r& D
set-current-plot "Trends-of-Local-reputation": I$ Z+ g; L% ?! v! Z! l$ f
set-current-plot-pen "Honest service"# b9 e0 m( A8 h9 h$ p6 f, z
end
4 m& Z' U" y- n, r3 c: \" z4 R7 m# _5 W2 k# _4 _  I$ G
[ 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 V  y- ]1 ^5 G% j
4 L" A2 ^" P' h. @+ U# |$ p2 J0 g+ R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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