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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:* _1 H' v5 i: n
to do-business ( Z  `8 Z1 x! ~# x5 e
rt random 360
/ A* X( u4 A2 R! @" N fd 1
/ c! Y5 C$ u8 c( Y7 L" l) z6 [ ifelse(other turtles-here != nobody)[/ n4 b. [0 w1 h: d; k) E1 U# |/ M
   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 S9 n1 ?" P. d6 s   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # S; f$ u* v6 e2 U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  }! `3 l1 Z$ l+ Q1 Y" l/ n3 I# H3 o   set [trade-record-one-len] of self length [trade-record-one] of self
% M! q0 g9 i  ~( j" n  k: k; G3 a   set trade-record-current( list (timer) (random money-upper-limit))
" s% ^8 j! Q6 c3 H1 ]
0 a/ G1 d/ A$ H& t- \6 h- b问题的提示如下:
$ }8 S7 k! F  _# }0 U# M4 J2 I. N3 E% H* {/ \( {7 U
error while turtle 50 running OF in procedure DO-BUSINESS7 R9 K& `- k9 S+ F
  called by procedure GO3 b3 z' U( k" v6 k  u. Y' q" X3 q: t
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 M  Y/ N& W% z% K! M  b- I
(halted running of go)+ {3 c% K5 \, T' e/ \, a" Y

; T, J3 U9 _1 I5 t  ?3 c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~~8 }2 j! s% o* Z8 f5 P" _: m
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
# @" {' A- ?2 l: I- @" S- d! Pglobals[( o$ }! c. q" f' n# O7 J+ y* y
xmax2 Q) q0 ?2 c& P) Z9 T% ?
ymax2 N& D$ D* V7 i6 V( l0 d2 f/ {
global-reputation-list* K  y3 g2 b6 t, X6 z# i
7 A. F+ {- L% P3 y( ?6 L7 a, f
;;
每一个turtle的全局声誉都存在此LIST
7 L0 H; T. U' Ocredibility-list1 o* W6 {& W% G+ H
;;
每一个turtle的评价可信度
9 K; C! T$ C& t1 h9 Qhonest-service
! P! S' U. ~9 G* a! Q( Funhonest-service- v' D  C& s  f! C9 I
oscillation
0 d  N: B# {9 Z) H1 Zrand-dynamic1 X- q* X, S- [2 @* Q  \% y
], Q: D, O  X- ^

1 g( n7 ^; s9 j' b' T; h6 Aturtles-own[- ?( [# `2 L' |
trade-record-all
6 v- q+ a, g% k" T;;a list of lists,
trade-record-one组成
' {% A, f, i0 r5 ltrade-record-one
" @: h4 R- T/ e;;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 r- G: w8 e& O. ?1 H6 B* u$ r$ X$ p" Y( b1 c
;;[
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 g: N- P# Q; _) o; {4 Rtrade-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]
6 g, N. m# ~/ ?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% f1 k) h, E- u; Q  a
neighbor-total4 q6 N! J7 |0 \  X) l8 Z( G  ~
;;
记录该turtle的邻居节点的数目
. ?0 Z) q1 S, ~, Q+ h) P; }5 ltrade-time
- {1 N! N4 E4 w; D% A4 E  Z;;
当前发生交易的turtle的交易时间
  P4 k3 @( ^: p# }' Lappraise-give
( |  ^% P! w6 d3 r3 V6 Y( h/ I;;
当前发生交易时给出的评价% X/ m9 c5 p' A
appraise-receive( n, R) p( k$ C  d" I( n( f2 p7 f
;;
当前发生交易时收到的评价
4 t6 t5 z( H- d1 }; iappraise-time+ s/ M4 m5 h( u! x/ M8 _
;;
当前发生交易时的评价时间
/ G2 V8 ]) B% Q! `/ j; I0 Elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
& \6 i* d/ K& u3 s0 w0 X! ftrade-times-total
! {- n3 p2 s" M' I: `6 x* C& f;;
与当前turtle的交易总次数, i3 v( [; z. @& K. @& Y( A. ^
trade-money-total3 r3 n: I# o- I$ M" I
;;
与当前turtle的交易总金额
+ b7 [$ K8 a0 i  w% \local-reputation
" M- f3 }( L' u& @; a$ Kglobal-reputation# }+ e, i$ o  r! z) H
credibility
9 q6 t; [8 p( r( N) p6 x: B;;
评价可信度,每次交易后都需要更新
8 `! S. N2 f2 j: O/ O) I% [+ C* V+ \credibility-all
+ k  ]- k) f) z+ V# F. ~7 Z;;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 n! N: ?) `: }% t4 A1 u3 ?3 s

) L) V+ I+ k6 l& a! [% {5 @3 K;;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
' a" v3 Z3 s$ p0 Fcredibility-one1 q) Q5 f) u. g& j: {- i5 Y# v
;;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$ @( T) |+ W9 t/ O
global-proportion6 z& X5 F; g( l% g) i
customer, H/ n, o: C# B$ d
customer-no- ?& V( z& j; ]$ K  y* z
trust-ok
1 M3 l0 i6 b5 S' _trade-record-one-len;;trade-record-one的长度7 i2 X. p6 }1 t! K7 g
]. l9 v% |* D2 ]- ]* c, {- G

3 y% F$ U. @1 h' e) w; U8 M; _;;setup procedure
1 Q2 j; h" |$ g5 B
9 W3 p) D2 L- |* J6 x, Z: Uto setup
4 ^4 k! d/ t8 c# p, N7 c! k/ ?; y* k- |; s6 U
ca

+ m) i7 P  n5 L; h) t  U- V0 A& I7 A" }1 B+ S
initialize-settings

% |- t* c9 e" c
  h; a4 o" e) L* k# `4 A3 @crt people [setup-turtles]
! A+ V7 z0 ?# v+ V
& h5 ~7 j+ B: w0 ~, e
reset-timer
6 x# F. u5 L& ^# E/ K! ?

* K$ y6 P) M8 s5 b6 Opoll-class
# N9 Q  Q8 _# A1 h5 P
7 _% h$ F( b9 A- C3 o% ]2 j6 B
setup-plots
- z1 R2 m. p9 J8 c

; @* W5 j7 D% J' e" h4 K& q1 O4 `" Hdo-plots

2 \& S8 q5 T2 d2 r0 o% Yend/ @& t& C- H0 P& E$ v/ w1 P

$ `4 r+ L2 g- l# f% [% Q9 a  vto initialize-settings
, a% y! P7 v  G; V! j5 J
/ j  W' s# x' {1 ?# Q; w& }set global-reputation-list []

, o4 W3 r. C# _* b; z* `
! M, V8 ~$ O/ _9 jset credibility-list n-values people [0.5]

1 Z. }. F; R7 h3 s8 }# n: ?
, ~" s4 I- m- V% _0 R/ Tset honest-service 0

# C4 R6 T( T( [/ x% e1 }  M
) i+ s" R- L( |* Kset unhonest-service 0
1 _0 ]+ f: k0 H8 ?+ ]6 w
& F  D" D0 R  T/ s! N
set oscillation 0

8 x8 Q% h9 H% V, @  A  `8 k
/ A  v5 ~& F2 P5 dset rand-dynamic 0

4 H3 P, {9 J  O5 T/ Yend
) _/ U, \1 j# _, N! `% V! @
2 L% v/ K2 D$ C1 X; Sto setup-turtles
$ F+ X" E* u9 w9 X. T! d7 bset shape "person"% J2 Z' A" c  k7 V6 A* V
setxy random-xcor random-ycor" ?6 ^3 f1 |* K" x" i) X/ G" @
set trade-record-one []- ]% }- S6 i1 ^0 j. G" K; e

$ i- e' T- r% u; Y" a$ jset trade-record-all n-values people [(list (? + 1) 0 0)] 9 v$ l+ E) \& n5 S
) m( f, e7 A" I! e7 H! q
set trade-record-current []
" {1 Y$ a* k0 g+ ^set credibility-receive []# u2 x9 {0 V8 V( C3 f0 o& r+ Z9 K
set local-reputation 0.5- `# z6 G7 R8 `9 l/ y" K- w
set neighbor-total 0
6 o5 Y9 H9 @0 Gset trade-times-total 0
4 H& D. C, ]/ U0 T% y# S8 ^6 Kset trade-money-total 0
) A& l# N' ^( O2 Jset customer nobody
3 x8 l) K/ H; S3 |6 T% Z; zset credibility-all n-values people [creat-credibility]
! S; L, q0 f* _set credibility n-values people [-1]
# Z+ w8 ]5 j8 m# J/ J" cget-color
9 {% ~5 h" z' O

6 p) \! k, s$ t. z, H: rend7 k$ N9 c4 R9 h& x

( V5 N. C7 `- W5 Pto-report creat-credibility
7 v) @: ]. A  h+ L( p+ N  }report n-values people [0.5]7 l  V' Y: L, u2 q' U
end
; ]+ B% g( g2 r5 [7 j3 b/ U+ b0 b; s! V
7 y8 Y) x( ], T& Xto setup-plots5 T" q. J6 E" a4 }, S% L+ |
4 X. T4 K0 V/ X, m4 P* b, p! W( r
set xmax 30
6 i: U* U: D/ i. ^7 O( S1 P; e& _

' z6 p8 N4 W5 }$ J, @- H! C1 f$ Sset ymax 1.0

' D0 M( k6 R  F
$ |( z+ w* ?; x" F9 ]clear-all-plots

) i. V7 Y! X1 Y9 \$ ]7 \+ h
- \/ @3 _9 g1 D6 I9 O; Msetup-plot1
# v$ v( j8 U. W& K, }  q1 M" O! b

* w' X0 N- U) a1 fsetup-plot2

4 C& y3 o2 q" N, D+ H6 G& e3 U) y: D6 Y
setup-plot3
' E$ p% H; q. z  l7 b
end4 f7 l+ i) Z4 h' x, F( D

% S, h( }, K- R, b0 X9 n- K6 Z;;run time procedures
$ Q/ t: u" y1 c' d" ?4 \2 s: q/ w3 O! o( \  A( W
to go2 |% D3 ]+ Q# J) \( D4 M; o! z, ^

8 Z2 `* j2 W" S3 jask turtles [do-business]

# D5 h% E# d: C/ c- Y; Lend
5 t$ W  [& }4 u, R2 R
3 x9 |1 J5 @$ }to do-business . y# j8 q9 K: ^% c: s

, g1 ^" r6 e% j! i* O
& y% f, d% f% z: ]9 _! ~' f/ G) mrt random 360
9 ^1 _! B. G6 ?+ i3 z

: Z; M6 Y( S1 o' `1 [. Ifd 1
3 b+ a. f2 }' u' K

9 A# V, K9 X" p& {* k" vifelse(other turtles-here != nobody)[
* w/ _; m8 C( X) u$ j
$ j: x$ l8 j9 r7 K9 k
set customer one-of other turtles-here
, i% i8 w  [- d$ @

( e/ k1 l* G5 x9 J' ];; set [customer] of customer myself

* C( j+ [2 k1 X3 O& V0 F$ T4 x/ Z+ c
set [trade-record-one] of self item (([who] of customer) - 1)" s" w( a. \& ~/ }
[trade-record-all]of self0 u; `! k& g9 I, e  m; A
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# j2 F  @4 J/ l1 \; d" q; R9 D& i( Y! n6 e) y$ @1 N9 l
set [trade-record-one] of customer item (([who] of self) - 1)
) C% J/ s& @$ u% C  g3 D- T5 W- M[trade-record-all]of customer
+ z7 s: X, P  ]$ c, o# ^" k) d
* U3 u5 f: ?1 q3 F% f3 S
set [trade-record-one-len] of self length [trade-record-one] of self

0 g9 x- x- f6 I8 N  I6 H& @$ b9 `! H# X) P% U( Z, z
set trade-record-current( list (timer) (random money-upper-limit))
0 N: H% f' L# W5 f
; m: ?+ v: g  d4 j4 n
ask self [do-trust]  t' @# N" k9 z: t
;;
先求ij的信任度
4 X4 X2 ^& L3 d4 ]2 ?1 A
9 U1 F. a% Q# U. S! N* [3 xif ([trust-ok] of self)
3 {; s. ^( A+ ?0 D/ M* I;;
根据ij的信任度来决定是否与j进行交易[
% E7 N8 H5 z; Oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& @+ C' H) ?3 Z  \' b  [3 _) I8 s, c4 b/ r; C
[

; @( S1 X  ^! F9 \& N+ R$ j/ G8 [# P9 r6 C6 q& r7 b" q
do-trade

9 J1 q! r: b& W2 A$ t/ k
* ]) y6 u5 V' \4 }; S% }+ Uupdate-credibility-ijl

5 S1 }! n! ?3 G$ F* F
% Y4 y0 T% e+ h' ]$ q, N- o' Oupdate-credibility-list& U1 o$ ~0 z) I2 p: }, y

% L: V+ E3 `) `( x$ S7 C2 P
; Y+ f, T* Q3 ^- `: rupdate-global-reputation-list
; t5 A/ V3 G1 v2 h$ x% i) @6 w
" I, Y. l0 E$ d6 o
poll-class

; Q7 n: \4 z' P; C( S- J+ ^* E4 u- Y3 s3 E, B
get-color
7 ~% V  g8 r$ \
3 l, _) q: o0 Z- ^, g' z
]]" e- C/ Y* |( N, `( B4 m
5 V) f8 e* A! ~8 C) }; N
;;
如果所得的信任度满足条件,则进行交易2 n% F+ s+ Q4 M" X' p: E

0 j0 S& G' {6 A) c  v[

8 p7 r# z( u( U/ f3 j6 D; j
  V- h( y! }% s& `* l7 Drt random 360

8 O, Y1 i7 l! ]. j/ `
9 P" X: [1 X& ?. ]( q; Z0 Q8 X+ w  {fd 1

: C0 y& J, f4 `; K
& N& a; [- i7 k! P$ O6 j" h- ?& ^]

" ~/ ?1 C. C% u" N' _1 h# x7 [" V8 j$ x
end
9 H' |  r' d0 X. ^$ U
* R% l: \  K9 w! J3 ?
to do-trust
9 }' m6 u8 X, D3 p2 Zset trust-ok False
& m8 J9 X- ^5 X% [, x* g& d; p0 ]+ u! |2 ?+ U9 A
# q. z# x. r4 B6 }: K
let max-trade-times 0+ }6 O# Q+ F( y: \" T2 q* \8 e
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% M" e% F6 @1 W$ z, Ulet max-trade-money 0- J$ E" h; f! Z& C; {
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" f' L9 H2 a% alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* ]% X1 O+ P. j" y  i

4 }/ E" _! B& z3 h; z) f
' i  `7 a# E/ p" H" E/ W* f, v" ]( t
get-global-proportion
; t5 U" A" i: X0 dlet trust-value
2 G+ E9 Y0 W3 x3 R% A* H* Z. rlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
: ^8 r- Y3 k4 ]* v+ y$ v8 W$ c
if(trust-value > trade-trust-value)
$ F* @" D# e* a[set trust-ok true]
  d( M0 N  |$ P9 uend1 l  {+ z2 ]5 c. J$ G9 x
  s: \% M3 d0 d7 _
to get-global-proportion  p) P4 n5 y- P2 b7 S2 A
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* \2 R/ v' x8 A[set global-proportion 0]
3 q3 T/ |- i" t2 O[let i 03 K- `) J' q, \7 N0 `3 U
let sum-money 0& N6 u# P3 ~% a+ j
while[ i < people]
$ d8 N* n5 C3 F; |  S/ G[% ?% ~& _2 L" e) t
if( length (item i. b9 N# @6 Z1 A5 K
[trade-record-all] of customer) > 3 )

8 C- x! o: ^) ^[
) m& ^+ k! d& M& u5 B, Lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 d) J6 G! E9 `1 Q% Z]
: Y- y$ y( i# l6 I" ^$ {! h5 t]
6 N* N, B8 u' A$ R" Elet j 0
6 ?3 D0 i& {& o3 [let note 0
& n3 e$ s. i: S8 F) L. p- |while[ j < people]
6 l" G4 G( S, E; B6 ]; C[& X6 A) X' i4 v  d
if( length (item i) W  u! U9 s1 m: Z7 O9 ?" x6 }
[trade-record-all] of customer) > 3 )
' B/ U+ U# o$ c& v. p8 Q
[
) [6 z% i8 w, f+ D, Qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' b# d0 m- ]8 [( w- j. o6 s
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. p6 ]# s" l0 b- x: o# q1 X! |[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: L9 y5 J& m2 |8 D) M]
' W: z- h0 ]+ V+ s% y/ f; E]2 J2 K- D: f' S. P8 C. L; A
set global-proportion note5 @3 A# @# Q* K- H9 G
]
; b  a- F5 t! \3 rend8 R8 w8 r0 H2 {
. p+ k. t1 }1 u9 E" }  Z
to do-trade
* Q2 C4 |/ c% E" C8 x;;
这个过程实际上是给双方作出评价的过程' P) I  ?9 K3 B& G- P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# O6 y3 Y1 U5 B; W9 m6 t5 P& V5 C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 i  f. S5 {6 C
set trade-record-current lput(timer) trade-record-current; r: n1 S  M/ Q  F3 N
;;
评价时间, @  |' Q: C* d
ask myself [% F( s7 f! Y3 D3 j
update-local-reputation. \% U0 L- `! F2 R) d/ p
set trade-record-current lput([local-reputation] of myself) trade-record-current
$ w  I" q0 g3 A5 _6 n& w( y! q]
" j0 D$ |% ^/ J1 e# W. pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ W' e6 x# z% q( _" q) f7 h5 R
;;
将此次交易的记录加入到trade-record-one' \: Q- K9 x9 |6 D  L/ a
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! c* p8 W+ G- \, [  @0 M+ N
let note (item 2 trade-record-current )
+ A& J/ _: ~" \7 _8 vset trade-record-current$ ]/ ~  e9 X# G
(replace-item 2 trade-record-current (item 3 trade-record-current))

! D! Z3 v, Y( @6 ?3 L9 sset trade-record-current
: O9 c, v  r0 J" T(replace-item 3 trade-record-current note)/ _+ a% y% k* n5 j5 y- W, @

) K, _7 y/ A  ~6 R- Y
* b* [+ p) u5 q- l* l/ F) R
ask customer [
1 U6 T4 |) d* i. m: J2 yupdate-local-reputation
3 {3 p& I1 q2 u1 g. mset trade-record-current
0 Z7 v$ V$ q$ h& G! B& o(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 N2 |% A( P. t) |2 k]
7 u6 f5 z) S! q% B- z- O7 W  ]* l5 ?+ h( `

) {* I+ @4 B! hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' I" E; D$ D9 X

5 x2 H, Y1 [; J6 f* Y/ w, p1 }- Sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
: G) V( g0 o! h+ M0 x/ j;;
将此次交易的记录加入到customertrade-record-all3 |. M! o1 b4 i
end% j7 v8 s1 @8 \% U2 G4 Q+ \

% j. A9 ]1 n% b% p* Cto update-local-reputation
  O1 Z3 c7 A/ w" B8 Qset [trade-record-one-len] of myself length [trade-record-one] of myself6 ]  X! H4 R, f8 R

7 Z9 t; i6 O& ?+ Z, D& f* p
( X$ c, R  n( q;;if [trade-record-one-len] of myself > 3

; E' y2 u  H+ \7 c: O! O1 Aupdate-neighbor-total4 r/ b+ |9 ]0 w: Y( W$ u% |
;;
更新邻居节点的数目,在此进行# Y- E( Z$ F6 D1 H, X6 b( n
let i 3  P& }8 r1 q9 V! o0 ]8 v3 s
let sum-time 0
7 u$ C6 U! z! n; _+ i" F3 |while[i < [trade-record-one-len] of myself]
( h: X3 _  @* K[1 r9 F, P3 a1 [
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' o1 F) u, `2 P& d3 |- c3 d
set i
- A- ]8 \! O! m, k( i + 1)

" w! [6 Y" Y5 @]3 x' z# h; H5 [6 F1 g
let j 3
' ]5 O  A' P' W6 G# {4 ], Olet sum-money 0
5 \0 d$ A8 R; [# d9 E0 @8 Uwhile[j < [trade-record-one-len] of myself]
# S) P& [5 G& H9 s, {[. P8 |0 T/ H% U, \, l
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)6 L1 V0 ^) |) b9 b
set j
  G- f! ~% ]$ _, s8 q( j + 1)

; @0 j4 S5 q' K$ B9 j]: \3 Y; Q; e! H& y2 G4 {3 t: l" a
let k 3& T4 U% i. l! ~, I3 `6 D9 g5 B
let power 0& b& Z8 y  }: s/ T/ _
let local 0
5 }; k, O7 P/ a( o7 Swhile [k <[trade-record-one-len] of myself]
3 f3 M3 h) H7 {0 |2 c$ m[/ K) H( h, r! S$ Z5 e- W4 _
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) 3 H2 @) @- @1 U& M9 i' ]" e# c- k
set k (k + 1)
/ y5 _& W- T* Y( E3 T0 L) L7 y]
  u# s: B. o" ]5 \set [local-reputation] of myself (local)
7 q. ~; q) F# i1 C4 qend
  n. n; [  M! @4 K% S7 [, \& E# P& u( L) @5 \
to update-neighbor-total9 a* C# ^1 v0 {, c
; O/ l$ ^, e4 d: P1 G# t% Z
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 v) M% _* G- k9 C& i: {/ Z$ m  f0 L  G  C5 k
6 a8 w4 x( O! i
end% f- x9 H/ I! [" O( w

6 D- D+ N0 X: m) U! vto update-credibility-ijl % s& I2 X6 m5 c2 A# _* q
6 K, k* N; {' J9 I; _: I
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。4 C1 Y" `1 `& g( s4 @7 L
let l 0  K/ w  @3 Y" _& ^
while[ l < people ]
+ e, I; P! O2 C4 u& M;;
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
9 s/ b+ c2 Y. }& b[' x- N! j" O. d% b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: D* b: Q2 ^5 g$ z- jif (trade-record-one-j-l-len > 3)
( A( G, s9 ?" {# g0 U7 `9 h( V" o[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
0 R5 ?* f3 e! ilet i 3
* P* |) c5 I3 b/ T* M* Zlet sum-time 0
- j  W; G/ k- H& jwhile[i < trade-record-one-len]! F: b' {$ W' M
[
& X* [0 {) u* K- \; oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 g+ G7 G. ^8 p+ r- x
set i
4 v7 {  L: g7 _$ X( i + 1)
! m# U. f# |" R; ~# L2 O
]# }& L8 Y4 G( N6 d
let credibility-i-j-l 0
( s7 m5 O  j' P1 G/ V;;i
评价(jjl的评价). E- |) o& T7 U+ c# e( ~3 z
let j 3, k2 n6 C& K+ N% F( r& U
let k 4
! K8 _+ l) x0 D) }0 Bwhile[j < trade-record-one-len]# f) u+ F2 p5 q
[; P; B% n3 T" @
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
* H9 h0 o0 }. W: W; zset 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)5 Y# ]  S* u, ~& z* a
set j% r* x  ^' n) U9 P
( j + 1)

: {- F6 E, W& }. _" t]  {. q8 [0 F3 A& p1 U
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 ))
: k! f9 x& e4 m
1 C# U6 q" J- v+ A5 p3 }: f! E

7 ?% K) [; f- Q" G# u) Q! Ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ r9 I! u" p* q. z9 ]. Q( A6 D;;
及时更新il的评价质量的评价
* y6 t5 K0 i8 k2 t% r9 ~4 X: \set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; U0 I, b3 T* \3 ~# B6 Eset l (l + 1)7 K+ k' Y( r& \6 M3 p/ S& c4 Z
]8 i  j4 g8 h6 q' x$ ]8 D
end2 }- D* r! ~% T, O4 J

# Q4 m) \' ?3 t! K# e& u9 E4 Wto update-credibility-list8 T) ~: k9 W7 U- V# @
let i 0
* U5 F1 d" _1 E* c/ Iwhile[i < people]
! q) Z. G5 g9 |$ y6 I[
1 _1 _& E5 d. j5 V( `let j 0
: h; ?  y" g1 A* o/ W) F& ^3 |let note 0
/ r* `$ ~: k( r& Ylet k 0
% v- h7 z( E; V+ j7 A;;
计作出过评价的邻居节点的数目
$ K5 `: m% s* T3 x) R; Twhile[j < people]4 L, Y. n( r0 @# O, r+ d
[* m" e6 S& U; k0 L  ~
if (item j( [credibility] of turtle (i + 1)) != -1)  \3 f8 T( w" n& O
;;
判断是否给本turtle的评价质量做出过评价的节点; ~+ L; a) y& B7 M9 L
[set note (note + item j ([credibility]of turtle (i + 1)))
& `- t8 ^. T. J/ O; M8 G" Z4 h;;*(exp (-(people - 2)))/(people - 2))]
3 c- c: K( G  `8 o1 c
set k (k + 1)) P7 j9 l5 m$ a! T
]
* N' @+ C9 B$ T) E% Yset j (j + 1)8 K* H) t4 v  k' ?# p8 M  n
], b0 B, K$ |3 ?" z0 E. d
set note (note *(exp (- (1 / k)))/ k)% c# L. Y- B1 Z# G5 C/ U; k
set credibility-list (replace-item i credibility-list note)9 M6 g+ E" w0 y9 [; j- y
set i (i + 1)
2 J: r; c9 B0 ?5 E) T]
8 F" K$ q6 ~# x4 \! B) ]end. S: t. S' l, T3 g# k
$ H1 ]& ^5 @8 g. ~, d
to update-global-reputation-list7 \& i* H) }( x+ |
let j 0
0 g6 ]% t; O2 mwhile[j < people]
' V6 u) n( {* X7 k# e1 w- b[2 P1 r/ w) D+ S
let new 06 P. {. D, O8 v7 ^2 ]# W  O
;;
暂存新的一个全局声誉! P. Z4 ~* X& m
let i 09 g0 }' x+ F2 Z. k; |, a
let sum-money 02 p' n7 \& l" n) w
let credibility-money 0
* @' P, E) o# ~, j. _8 Uwhile [i < people]# P9 C8 v& r! s; G6 H
[8 _) A5 p9 A) }/ ^5 Y3 X  E5 h& g, `+ S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# I3 `7 o' J% c2 p+ k
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) [3 p- x6 I% K( X( ^+ |  Nset i (i + 1)$ l& H- v3 k( z
]. h0 K4 F2 b2 m. W, Y+ ?
let k 0, j; ]* a8 [: W1 t
let new1 0
4 L; ~. H4 n0 S6 Ywhile [k < people]
2 G7 ?8 w1 m" r# B+ {[% Q1 c5 Q8 G2 q! e5 X% i
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)
% j& [; l; K( _" n. I7 _- oset k (k + 1)6 k9 I  h: i" w7 l
]
1 d3 S, o9 J6 G3 y2 n2 C: h/ xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 O" A9 h- J% p0 g# K% gset global-reputation-list (replace-item j global-reputation-list new)
7 G: h8 J3 e- Q' C, u2 Vset j (j + 1)
" A) S' W2 e$ J2 m, K4 L]
+ L2 s+ ?7 o+ I0 I" k% D5 bend
4 u( M8 P+ [, d! x- C6 I4 Y; Y, S

) O+ `; \4 y6 P' G# U" u- g8 s- j% R
to get-color' s. }$ j+ m# H( J2 {$ B; E" k! s

( J& o2 G& ?  C7 h( e* Mset color blue
/ C& [( D/ N2 h/ M" \# M' m
end
# b; O( p: V8 C8 s' c
# z6 s3 X: C7 ?5 oto poll-class) K. I, E* R  Y+ H# w4 O
end4 c+ m, ^. x/ a. e+ X7 _

+ z; l7 v7 v; x6 s# @4 j' Yto setup-plot19 k! @) l2 K9 ~/ L& A% r
* \! f7 _8 ^0 t0 ~, @$ C
set-current-plot "Trends-of-Local-reputation"
4 n# ^$ @; D5 V  W# n

% e: x, K- Q' Z7 r2 s7 G  Hset-plot-x-range 0 xmax
5 f/ m( x- I, n+ z: c6 ]6 `

' ]4 \# @( a% v2 Cset-plot-y-range 0.0 ymax

' v7 l, B/ z$ l* ]8 a2 vend
& Z8 k% H, z2 U/ O$ J  [9 F1 R* ]! Z" L* z' Z/ J1 l1 w
to setup-plot23 Y/ _1 p) I: Y6 k( }8 ~, }1 K
4 G' Y7 M4 U  P7 m% B
set-current-plot "Trends-of-global-reputation"
7 `* T. M' d( I" c

8 p3 {/ D4 G. Y' p# R- F/ tset-plot-x-range 0 xmax
) Z2 b% X5 H- ~' l4 m

' W: T# m& e0 r( A7 v% m7 [set-plot-y-range 0.0 ymax
& K3 x8 t2 b2 R6 L
end
$ ~/ T0 j& \3 J5 i
4 F: C; j+ ]$ Z) q4 V% g- R1 Oto setup-plot3
! c6 x6 V" V2 s, E6 Q1 k# e" R$ {1 {4 a# h9 M+ D# W: p" n
set-current-plot "Trends-of-credibility"

1 g  j) X# m- l2 p  E# C8 H
7 o0 D2 B1 L$ B1 f: V6 d0 Y- Wset-plot-x-range 0 xmax

$ E2 t: Q, _5 M1 c: o# O! s1 e% Q& M2 m7 X
set-plot-y-range 0.0 ymax
3 O  ^8 ?' ?! c/ f5 M5 R* h- H0 L
end
/ C: ?0 U" ], O9 I# P7 x7 U1 ]  O3 d; m% k; Y0 L* @0 O; u2 M
to do-plots
. ~4 j+ h7 U% b7 n0 U& V* {set-current-plot "Trends-of-Local-reputation"9 V( G6 o# `1 u% u/ l3 O! \
set-current-plot-pen "Honest service"
4 M; e2 R  e; }' dend
# s0 }. C/ l7 P; _' r7 X" r7 Z1 T1 h) X9 i( ~* q# K* O
[ 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.
) Z( F9 L  v0 e9 W- m8 d9 ~
: K. i" j4 f- r  h( U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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