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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:
) X4 b% l. f# ?0 o5 ito do-business 2 M$ Q+ b7 F4 \8 B% x( s3 u$ S
rt random 360  T3 [) C4 _3 b' r
fd 11 Y% p! L1 l& z+ O$ X- A; j% R+ l
ifelse(other turtles-here != nobody)[) W% G# ^2 j) y
   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.0 g  K; s4 t; J7 {: ?
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' ~' p, J8 I; M: t   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 X9 ?+ _, M, W9 c% b0 ?
   set [trade-record-one-len] of self length [trade-record-one] of self
9 q% E2 S- z- s, X# B1 X0 S   set trade-record-current( list (timer) (random money-upper-limit))+ a- D3 ]" V) z2 B

5 ], T- ]; C3 v* ]' m0 ]! X  O问题的提示如下:
( ]5 i8 v* ?1 r: T& \. h* C+ J) @8 y/ X7 K$ i. ?0 b! |; c6 _1 _
error while turtle 50 running OF in procedure DO-BUSINESS; E- K0 ?9 g! j7 w6 H
  called by procedure GO
* L; ~  O/ l+ N% s' @' k0 f  [' rOF expected input to be a turtle agentset or turtle but got NOBODY instead.3 M3 Q& F0 X2 F
(halted running of go)
* x6 X4 m1 x0 H8 l8 A# v
5 N" U" }& B3 H# y1 }. T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~~
! J3 c6 J6 `: i0 |2 {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
: W8 |) w* P' Y9 c, C( {5 nglobals[. t, d' _; `( B
xmax& C, \5 P! q+ j1 T) ~
ymax
: ]/ `2 b# M* K  r( xglobal-reputation-list
% n9 }  g) q1 j! y
9 p* o9 s. p( `3 o, L; `1 c, M* n;;
每一个turtle的全局声誉都存在此LIST9 j9 Z% H- a; G9 R5 M
credibility-list
& [) o3 N/ F$ k+ [3 y5 ?;;
每一个turtle的评价可信度
. ?' L2 @  z  r' s  ]4 C" q. Shonest-service6 s8 ]: U6 P$ x& c( e* {" d9 r' O8 G
unhonest-service
& B+ \) {8 @6 J# o6 Boscillation9 m, E( k  H' g; d  c! F
rand-dynamic
% W) j. v+ h3 F5 P( @]
/ g" g+ c# e$ Q7 P
  d0 C, @0 ?- c: m8 s9 X% n: `turtles-own[+ ?3 r3 A( h9 k/ g. z* a* X& O' r
trade-record-all
1 S; }3 l' b* q$ |) M' y;;a list of lists,
trade-record-one组成# B" q: `' h- L3 l9 ?3 S9 U- ~- o0 `+ N% J
trade-record-one6 q; W9 L- [& f7 n
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& L' q* ^3 l- x- ]  X  d3 S: P3 P
;;[
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]]. R0 f! c6 [/ `5 D
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]
9 t- X3 e* n: B" d9 H& Ocredibility-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: b  g; H0 R' I2 v/ [! O
neighbor-total. h/ _5 H% G' c  v, k  v
;;
记录该turtle的邻居节点的数目
. }6 ~6 K4 J' T' ytrade-time
0 H0 o9 \$ E6 F% a9 d;;
当前发生交易的turtle的交易时间
4 K" l# a9 h2 F+ h# d: ~+ Bappraise-give3 \0 \: _7 N; k. F/ U$ y
;;
当前发生交易时给出的评价
" S# ~' V# B0 m. Nappraise-receive; A% ~, A# o4 {9 J
;;
当前发生交易时收到的评价1 v( l4 G2 O/ A' O; M2 e& z  W1 m$ W& u
appraise-time
: S! K7 |- @) L+ u4 h5 V;;
当前发生交易时的评价时间" P- O0 F' b# v* z$ g
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* p% r% l+ E: Ltrade-times-total
; b' h0 ~$ I( g0 W;;
与当前turtle的交易总次数
. l. v. B- E  @. k8 F5 V/ u4 wtrade-money-total
/ |0 \+ B! Q9 l( m8 C;;
与当前turtle的交易总金额
1 E- C5 z: v6 j/ B% R6 U3 v1 tlocal-reputation
9 a- D' e# n2 ^global-reputation* z0 m5 O, k! n* F% o5 e
credibility9 _$ F( Y6 d% ]7 w8 n( P
;;
评价可信度,每次交易后都需要更新- H9 i3 L* E# b! \& J" F
credibility-all
8 W( I5 @9 M  @. t1 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
5 r/ m  Y  J2 v& _& W7 x- [) A$ p: |* a* Q, |
;;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0.50 n" X3 n/ c! i  ^  m  b5 V4 P
credibility-one
; s# \( F4 ?- E* I1 T6 Y;;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
! ~/ E( I$ b' D8 d$ W+ {$ y7 fglobal-proportion/ m1 y% e8 H; Z- C
customer
* ]( `. y. I/ t3 h5 r: I6 L6 lcustomer-no
% h+ |& f6 i* X7 I. ftrust-ok
$ Z4 o, |* ~( {5 ztrade-record-one-len;;trade-record-one的长度
* Y( N, X% U: w) p1 ~, F' B* n]
; z8 Z5 W6 \8 ~2 R2 z* m  F; D6 L: R1 t3 b- c7 o
;;setup procedure
' l7 g- g6 L/ _7 I+ Y8 ?, Z! k8 i9 Z, V. g/ V: L, r. ^+ N
to setup
% z9 [" s" l' d) s0 D- q7 i/ Q
/ I3 |' U! S  y+ X3 ?ca

# p4 F1 m- t/ N2 }  f  ^3 d; v  N! Y8 b- n0 F
initialize-settings
% g5 t7 m% f$ U2 D$ j& b) ?  J# c3 \  i% u
9 w4 x' y8 N  }; P# u4 a& H( Z
crt people [setup-turtles]
4 ^4 i/ L# @+ T0 O/ s9 I: P0 c5 p, I
. N  Q0 D/ l# \# y' U2 f
reset-timer

" P, }" V* @" }& R1 G
) j4 [* B2 I6 A& w$ Rpoll-class
4 N; D& G/ l3 ^6 ^( A# b1 y8 i

/ G. U" b* }! l: g2 U3 Csetup-plots

5 z  `: Y: S! K/ P) @$ k- ^( q/ J: m$ B
do-plots
0 b+ @2 \  J* @# N
end
7 M1 t/ K+ b" I- i: n8 j: \
0 s1 C3 N$ t6 f1 e- {to initialize-settings% T6 A, \) h1 r$ O
4 x' I5 T: N- [& P' A
set global-reputation-list []
6 F* B: P1 @3 U( A" o: L

) {* U& U( W2 F7 Oset credibility-list n-values people [0.5]
6 {5 P' F: [6 e% x

3 e: E1 G6 G0 V# j8 _# ?& X2 `set honest-service 0

5 e; i, x% T" i$ a+ _, \
4 ?4 a3 l# p3 S  _1 Zset unhonest-service 0
8 N6 H7 O4 X) N2 D* [) w
+ Z# m+ g  @. |  A; O
set oscillation 0
! y: z/ l4 C+ G  n

0 ?; p. `' w- A3 d  s7 E$ kset rand-dynamic 0
( p" O# m4 o  c) t
end/ r0 |; [9 R9 b. w/ i& U
: z3 E# z8 y. q: n+ Z" ]& {* d
to setup-turtles 0 L7 S' i0 i0 o* C. N1 @  B
set shape "person"
$ g" b& I# B. a  b5 a% v% |setxy random-xcor random-ycor
+ |& k; w+ x( E2 g* Eset trade-record-one []- o, F' P- e) u# T( {, o& s" b
+ S/ h: V( Y9 e) v) J! s
set trade-record-all n-values people [(list (? + 1) 0 0)]
* n' R1 f& \& F

7 Q+ ?: @% F0 k9 |2 }set trade-record-current []
% I# C5 e. o1 |set credibility-receive []2 u  a4 T4 ~# q- s. R
set local-reputation 0.5" Y. H# A# {6 r4 W" ^4 v( N+ d
set neighbor-total 0+ p2 f, j. i9 G: o
set trade-times-total 0
; y0 r5 N( Y$ b: C5 u3 \# qset trade-money-total 0
; Q/ f0 L# g, i8 |set customer nobody
7 r1 U# |( _9 M2 y& M3 j1 D! Gset credibility-all n-values people [creat-credibility]
, n  `6 ~4 [+ u/ Hset credibility n-values people [-1]
' A- }3 J+ b% ~' p1 kget-color
: R4 w1 K+ ~3 q

# g! T& s& ?0 k( m+ ^3 p& rend" M* w( M% V% X' n1 v. N
. z+ G, s" f6 t7 k" L
to-report creat-credibility
; N! M' r; P7 \4 p! x6 nreport n-values people [0.5]- W' D9 f8 a+ {$ z- v) s) O
end( H* Q8 `0 d$ [7 b' F* `& o

8 D2 Y- ?( o. w* t! j4 \to setup-plots
# A1 t, l5 I" ~. i- O$ g8 M& }
& ^9 B; R! V. A- \; mset xmax 30

" N7 ?8 c' H! a3 \8 d8 ^' B5 X/ X; y6 s, J; |& i1 I  F
set ymax 1.0
  g) w* F7 m! H

, T% `! d; {- I- U4 `) X6 wclear-all-plots
) H  F8 V' |9 f, l- A" A4 o% _
! @: V. d- E2 W1 p
setup-plot1

& E+ E, C) N7 M; e
+ c0 Y$ S: O. C, D1 O# ysetup-plot2
1 l$ p2 Q& ]/ J. V/ n+ ^

: j; Q1 ?' b. q, p' U& msetup-plot3
( i4 ?7 ]0 ~  X2 G4 I- K
end
8 Y- L8 c- K! q* J# W! f
* Y% G5 K! C7 \. o8 N" J9 a;;run time procedures. U' K% D$ Z. M4 Q

4 }6 E9 K& e) f4 `1 p* }to go
/ r' S9 U5 a' k" b# z1 I3 ?. ?% s: F; n) S( s1 F6 p7 d
ask turtles [do-business]

  [6 |( y( B, N( i, R0 u1 ]end
/ ~" @/ V5 N  A- J' `' ]! ]
2 h/ K( x8 }8 B0 e' ^9 hto do-business " O: P+ c& e+ e  j, z- ^. @
! ]* o# O! V% w9 r& T1 L$ k; [8 ~
* h$ @6 L6 c& g  G& ^: @
rt random 360
9 [$ N# s) z( Q5 V3 m
# M! f" a) g0 Y; }
fd 1
3 X7 V7 }7 A/ x( `1 u  d

& V1 j4 G/ ^! eifelse(other turtles-here != nobody)[

% L: u! ^  X& _9 m1 q5 M8 f( q: ~: k1 a0 ?8 f' L
set customer one-of other turtles-here

  g" h& t- j1 O! a" M' b
9 l5 z, @; _, E: C* M/ L;; set [customer] of customer myself
3 _/ v; Q3 U8 o+ A+ R) e" Q

- l0 X+ D( X) f7 iset [trade-record-one] of self item (([who] of customer) - 1)
9 t, M  f1 n0 l; x- Z  s[trade-record-all]of self* J6 x. g6 R' T$ w/ F
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 K& m( \2 {9 _! ^2 d8 J) X  T  a# ?1 k% q
set [trade-record-one] of customer item (([who] of self) - 1)1 e( w  U& t5 e2 w( D
[trade-record-all]of customer
" f8 L( a9 v! v: S' M1 m
8 D" W9 z) Q3 s+ L4 g5 _6 f
set [trade-record-one-len] of self length [trade-record-one] of self

9 K; A1 j) P" c9 k0 X! E0 l9 I* F( n5 d9 }, R% f5 j; J. _
set trade-record-current( list (timer) (random money-upper-limit))

' g* \5 p& T" x/ ?/ p) P
6 S$ x. e( }6 Z2 V# ?ask self [do-trust]# j; r  X: f; r" i0 N
;;
先求ij的信任度
  {, {. r4 R5 e; U0 s; l4 s! ^; W( ]5 Z" c
if ([trust-ok] of self)
# j$ n9 s7 v& u2 i4 F" l1 X7 O;;
根据ij的信任度来决定是否与j进行交易[
+ H6 M# v1 l# d/ p: Oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. M4 Q' ^" |' k/ E, @
& N- W" P( ?" b/ o, b* d[
; j9 e* l7 W  i8 T. V3 c

% W: T5 v$ g* Vdo-trade

1 T0 ]9 g; l/ l* w% _5 m; i2 D
; {1 G9 c1 O+ Y/ w! W1 y! Eupdate-credibility-ijl
, P2 |; I: d' f+ u  w
4 \3 q' Q6 R6 }. r  l  w8 e
update-credibility-list
7 l. N  k; B3 l* `

5 b; T, y1 L6 s6 E, a  x' t# ?9 K0 o
update-global-reputation-list
' U" z; U  t0 t# A+ f
) X  g/ x' J0 Z
poll-class

* x. E6 T- r) N7 b3 y1 O; y! v* R( ~
7 U4 Q4 q* k# k$ S' Y1 H8 [; i. _* eget-color
& U: `/ E3 M5 Y! Z" j" h

" ^1 [- S5 f# s) t6 l3 J]]
, m2 V; ~0 _# H2 F4 N1 l6 m; A! ?+ D4 A( z4 C2 ]0 @+ _: Y
;;
如果所得的信任度满足条件,则进行交易
; ^  a2 x1 o1 l' w3 m1 D0 q) g$ J) f$ y8 }6 B  p; A  Z% v
[

/ n4 }9 @! \1 G" r0 O1 q0 \1 [4 e* b: G2 h3 a2 z0 e
rt random 360
7 `2 m$ t( w+ n4 W( a# a7 e

) f: p/ D0 S; M, q5 U( y* ^1 {fd 1

% J3 b: B# `4 O1 W: W# S  g3 j; }. u6 U+ n
]
% m' c4 ?* D) `1 [& s
( G! K3 f) @5 d- `
end
) s, `' F6 g; n  t, _* H

5 E# n. u2 R6 X- v( uto do-trust
  U1 N- ~& K- G, \& {9 h) j% Gset trust-ok False# H5 x( l" l; Q1 O1 u

, \6 v; \2 S2 L3 e2 X; D1 x

0 X: a# H- j2 |0 tlet max-trade-times 05 J) |* i$ w- Z. A2 L: [
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 i0 L3 p0 x2 \6 r  X+ }; n9 a
let max-trade-money 0! Y( \7 r1 E7 L- T# |( Z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 x$ S/ v6 `( Q! M  Rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# K% K. a' H( e! }4 B, W& O* p3 p- N

( T( h' q+ |$ g  q0 {# Aget-global-proportion
& S1 d# W# o! t- w5 slet trust-value& Y. A: C% o# O+ W" z* Q
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)

+ c7 x9 V0 ~0 g3 g4 Vif(trust-value > trade-trust-value)/ f; B- C. r, l
[set trust-ok true]
7 X/ V* D3 }% u: l3 V3 K1 iend
& O/ p9 c+ j7 c" \) G
& ?1 |8 d! `$ `: y" B, Gto get-global-proportion
8 D* [/ a  f2 h# yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): _1 D  J. d1 z" A
[set global-proportion 0]- _5 k* Z$ z) G5 n% ^6 D& U
[let i 0
& G" {- t- d0 K* l# Qlet sum-money 0
8 K# ?* @6 A" Cwhile[ i < people]
! Z6 P& ?% N5 S; c2 d2 p# c% ?[4 I7 u7 M" {% @1 }3 H) |% d
if( length (item i
/ B2 g+ A' G7 m* A- @5 `[trade-record-all] of customer) > 3 )

) ?% N- J: ^+ V5 w9 L) P: \[
7 O3 }1 {: [) h* B5 b/ Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself)); a4 M7 O* S& b; b
]
3 _% \/ }5 Z+ B4 A3 O]
9 M4 w3 E, Q' W7 d. E; i( olet j 0
% Z% E$ V; f  F% Xlet note 0# @0 o0 e* r, N7 K* C/ \: E5 _
while[ j < people]
/ z2 w) N  {  i5 o; j: {& e, X3 l[" }- u: G& e) f" Y/ V& Q
if( length (item i
; l1 F1 m7 I6 a7 U. k0 {) @2 F[trade-record-all] of customer) > 3 )

. {0 c; R) O' K  ^[2 c" M0 M: P' S7 T1 L
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 j& l/ R7 i1 [& m
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  j: t. k: T2 C9 V+ I  q* @[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( }( x8 E7 a* B& c, C7 B, S" U+ v
]
1 `4 N5 P6 g9 n  Y( T5 q* C6 W]
5 T$ i+ b4 u; @- M! M0 x) c1 c, sset global-proportion note
% \" t- N7 s* ?6 L  Y1 s]9 c# C. S' [+ K  r5 A0 S) z
end+ t6 ?1 x; S. ?( o% a! p
2 g) l3 z  \- H: Z. \- q, Y- @
to do-trade
( ?7 R% C2 F2 n  R;;
这个过程实际上是给双方作出评价的过程% C0 m- u6 ]" W1 |* O7 F- `) o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 w! w' H) w) E, ?5 n" O. X- dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. E$ V! g& Q8 X" t1 `% _
set trade-record-current lput(timer) trade-record-current: C& g3 `5 H0 S+ z) M/ T
;;
评价时间
$ R7 N  P9 O) {1 M9 D$ p9 v) Aask myself [
5 K: ^% Z' V2 @$ _/ Q1 L7 Rupdate-local-reputation
" Y3 \8 i8 W# B& [: g7 j6 l  lset trade-record-current lput([local-reputation] of myself) trade-record-current
' R5 E9 W! O0 R' L- E2 P3 j]9 [+ v7 M8 T' U
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 Y: D6 f3 Y& K! o2 s9 n) F' p
;;
将此次交易的记录加入到trade-record-one
2 E! g7 }8 U& O9 g" Gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 g  R2 W; \+ Q& V6 [3 Y  b( _
let note (item 2 trade-record-current )( \0 x$ ?4 b6 x" I! T# U! n6 Y4 ~
set trade-record-current" z5 T9 Q4 N# x0 \5 M8 F
(replace-item 2 trade-record-current (item 3 trade-record-current))

1 W- _' F2 N1 R  Nset trade-record-current
, a, K0 E. \8 }3 r# X. e6 }(replace-item 3 trade-record-current note)
8 t; R; _/ d% ~: B
: O! Z  s3 l2 j+ N3 a7 i) r  C
: n1 h# r0 ^) D0 J
ask customer [
3 i5 f' f% k3 B1 Bupdate-local-reputation
1 R# C( }& w4 _" E6 @5 Qset trade-record-current) R. [! G7 Z2 I5 h* o3 B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, @) n2 v9 G# j]( e! F0 _3 T# b. ^4 }
/ }& ?8 s' ?5 q- n! y# `, c

0 i, V: w! |+ _: jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 a& c1 N) w6 r. d( ]
" K" I+ v  }' X, Y. I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ x7 \1 R, U0 x9 a; B
;;
将此次交易的记录加入到customertrade-record-all
+ i9 X5 |: u9 |! l" s& Lend' P8 D( Y: _& X  Y* `) v5 y
5 v  }# [! N7 q
to update-local-reputation. f4 l' k  n8 F7 p! @  L
set [trade-record-one-len] of myself length [trade-record-one] of myself* ~8 n' h' W7 C" D1 L- R

! p+ K3 g0 F$ [$ w
( N+ e+ |0 ~% u, y1 P  q;;if [trade-record-one-len] of myself > 3
& w: ?$ D4 I# S0 C
update-neighbor-total$ ^1 I2 O7 S# {. ~
;;
更新邻居节点的数目,在此进行3 l$ K% ]# v0 G) T
let i 3
2 u; _& ~) y, z' O6 u9 @8 rlet sum-time 0
0 Q7 `8 ~% F' }6 ~+ hwhile[i < [trade-record-one-len] of myself]1 q6 Z- @  Z7 F6 y8 k
[
. [7 {1 N4 P  ^1 f9 G, t) ]set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 V' ^) E2 O1 V% `8 H. e
set i* R: D( X" O1 S$ M) J
( i + 1)
# v" E/ v! |* [. E7 u
]: M* H3 w8 G- y6 c
let j 3
0 g  p1 ?& ^/ E  Plet sum-money 0
  ^  S; f& v, g7 I9 ]while[j < [trade-record-one-len] of myself]
) ]5 C, D  J) F( j# |8 q[# O; ]( N4 z* @+ e' S! R' j
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); v$ U6 V+ w2 @4 J
set j
+ _, l/ O: N! }/ d6 Y" H; Z( j + 1)
" w1 x& H6 n- z' q* k( C/ X! K
]5 W: H& L% Y$ k5 r# g. _: j2 \& L. |
let k 35 I' B; F  S  v0 }$ k5 |& [
let power 02 M! E$ i, N0 A+ E' b: r$ G9 U
let local 0
  b2 R1 ~' {9 S$ O% l% U. Owhile [k <[trade-record-one-len] of myself]: B; _1 K: D* {
[
7 i) [+ B! x8 O+ Kset 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)
# d/ t( R% T8 {& {  F/ h7 Lset k (k + 1)6 d3 G# x  o9 d* n8 o
]! K$ h; T5 g  w9 I9 `
set [local-reputation] of myself (local)
: H+ r' `+ [/ y$ J6 kend
2 k* `2 k% p* W! g/ t! x  V& H) P$ M6 T& B
to update-neighbor-total4 `/ r$ m" x$ _3 ~: b+ b+ w
: n  @: a* E6 h( x* s" E; g# B3 K
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; h% S1 L2 K: }; i* T

* D9 K+ {9 w1 P  {0 W( C$ J
/ a! s; X+ y8 y7 l0 e- x
end2 [  J, ^4 l$ G, M0 H
( f1 Z2 l8 g4 A, E) w6 {. c( S
to update-credibility-ijl 3 w; h; L, T# o4 s6 i" C8 B" C9 K* ?% n
5 k: _5 V% I: r# o8 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。
1 H8 r, e1 H7 |- t' i, zlet l 0& F4 S# u* m2 _! [' \
while[ l < people ]
8 q/ C/ O8 g" m- w; X  d7 [1 r;;
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; J" }& R4 X% v9 B3 A1 ^5 o9 q: K4 _
[
6 i2 C1 J6 O2 D# }+ p/ Llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- u* U5 ?( ?& z; S: hif (trade-record-one-j-l-len > 3)
+ S/ \$ s" i" I- }  |1 B6 s% s[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-one0 e  p3 D! e. ]% n7 V& j
let i 3
- w7 ~* W* u( J  Jlet sum-time 0+ G" W. g, I% h! P  w* v" d
while[i < trade-record-one-len]
$ r: X# N+ Z' r[* L9 X+ g5 E! K# h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 O' G" j2 Z7 w
set i
6 N: |$ C1 S+ ?; K. i( i + 1)
& V1 q# ]8 Z- o( J
]
2 n7 e6 j% z9 i& U2 c# mlet credibility-i-j-l 0) {, F) Z/ \6 x5 e+ a- d
;;i
评价(jjl的评价)' V6 E4 L- j* w
let j 3
1 \' [$ S  ]- r* @let k 4. p3 G0 o$ S, c
while[j < trade-record-one-len]4 L' x4 B8 N& u9 M
[" V" p- v6 Z! J8 p/ N# N
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- ], g5 N% ^" q3 L
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)$ e) q1 z8 a# P  j0 O
set j! @/ E/ u" k' X8 Z1 U2 _" c( G( \
( j + 1)

4 k# O. ]1 |# F5 d. b( j9 M]
& G" R. v# f4 lset [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 ))/ C5 z' u; u) n
7 F2 p, \- Z  j% V" I+ C

7 R; \7 |' H/ U. S6 klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' j) T( W/ m$ Z* M3 J
;;
及时更新il的评价质量的评价
; w- }  b! I4 v: v) j5 qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 O5 t- I" s3 L* \( D. N1 c  uset l (l + 1)
- ]: g% |$ n2 U, S! J# U* M0 F0 E+ u]) L6 W/ q" r; ^; t
end
- w0 Y* {1 e# Q3 P7 i
, l. F, w# z9 w8 Qto update-credibility-list
, P5 Y! h2 H3 i/ Hlet i 0
" C! ^# _% g$ Ywhile[i < people]
( z5 p  v. c# D[9 t, v7 ^/ V) t. Z& u! R. K5 \
let j 0
& V: ~$ h% I# H6 vlet note 08 I# V* z- |3 D. b# O
let k 0) [; Z  ?) i* ]; ^# \
;;
计作出过评价的邻居节点的数目: Z. M& ]; L/ B8 f! G, G
while[j < people]
5 Y, w1 X( {# f/ X* K[. P; q, A* K9 B/ X
if (item j( [credibility] of turtle (i + 1)) != -1): y  V& e$ ^- I
;;
判断是否给本turtle的评价质量做出过评价的节点8 z0 [4 ?9 W6 d% h
[set note (note + item j ([credibility]of turtle (i + 1)))
7 P. [4 |/ ]  ]2 g  V;;*(exp (-(people - 2)))/(people - 2))]

2 ~* G9 R1 {+ L9 G$ a0 m* k8 e; Iset k (k + 1)+ v6 Z4 @7 T2 w) H
]) [: J8 S/ L" P5 `0 ]* K
set j (j + 1)& I3 T" C% d* L6 ^
]
- M2 _# e8 X( m5 vset note (note *(exp (- (1 / k)))/ k)1 z! x! P. t9 y' Q
set credibility-list (replace-item i credibility-list note)# F, z3 e6 ^2 N: X8 }# }
set i (i + 1)& p8 A6 x  S5 _* D' U
]
, D* F" ^# M! t$ Uend
9 @( j' @* |8 w- `2 s+ k0 [' T- m& C' p$ i2 _# I# i
to update-global-reputation-list
& @& P8 t3 G" ~" Dlet j 0" e  L6 p/ D6 B2 k0 `1 }* G
while[j < people]) h8 k+ T, `& M0 i/ z
[
, p) ^9 N7 p, t" vlet new 0. e- I" R6 w9 ~5 a" f# z
;;
暂存新的一个全局声誉
" C/ O' A" ]7 X% g! `2 ~let i 0% [: l+ J/ ^8 r) f0 p, G
let sum-money 0
3 Y6 r, p4 B, M  T1 c/ P+ ilet credibility-money 0
# n; B* |. ^- c0 p3 T3 L! {while [i < people]5 J: Z% o  `; y
[
$ B0 V3 b1 U. F' c6 V( g' Mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 F  K6 ?8 j# a: t& U% L' y0 fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 y! ~0 z  @8 m# H% z- y/ J6 O/ m
set i (i + 1)
& v. z" e( u: e% _0 d  G  H+ j]
7 X8 c$ G" |: l$ c. x. H  [$ Qlet k 0
9 X! N4 N7 D  f$ |2 l) Elet new1 0
  T5 N- \1 L7 U2 T/ bwhile [k < people]
- n  Q5 I' ^) K7 Q) _[
1 J9 P/ N  i  ~5 j0 h! h3 wset 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 \% |$ E+ Y1 j$ V8 N) H7 R
set k (k + 1)
* A- b9 S: v) n# g2 C* R5 q. i]
. m7 L( E3 t8 S" Gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ m( Q# [( @; Q' l, {6 i1 dset global-reputation-list (replace-item j global-reputation-list new)
0 P4 C* b0 b" S/ T! tset j (j + 1)
+ ~+ o5 u  f7 d. s. {# v]
. E. _3 a) J1 ~end
& b8 f; e$ G5 [0 E; R# t' z/ }! n% C% _+ |' r& L& `# w
  g* P, ]5 @2 p6 ]5 Q# n

( P0 g+ x4 ~# @% ]9 c, D( L* A3 e; l2 Oto get-color" F8 [) V) u! T, m; |% M' R. u7 f2 O

$ F1 s9 e1 ^+ ]! p5 l, H" dset color blue

* x1 p9 m, z& t% `2 @2 ~end
' l7 ~+ X, v. w
. L1 i: W. U- U3 Y* w+ Ato poll-class
& \+ A$ e" z6 L6 Tend
/ s3 O" p2 u3 ?  W  ~% e' z
, |% K1 }- d# t  h; v/ ?to setup-plot1
% z) E" D( X: Z7 W
8 E) [. Q! K: W; V  d3 y2 @set-current-plot "Trends-of-Local-reputation"

8 Z1 ^# ?7 p. ~: E! m) L% ^7 x9 c2 w) Y
set-plot-x-range 0 xmax

" Q9 O& i8 w1 v$ H$ H$ i  z* S7 H, S7 \+ e) C
set-plot-y-range 0.0 ymax
9 \2 b2 H' i5 y) K' J( r* U% n
end
2 z' W) v# f4 a- B0 s- I' b; l: L6 h9 G1 F7 p  l9 g* m  F
to setup-plot2
. Z9 B" Y. K1 P
8 Q( y( {+ \( r% w: f6 s3 j) Gset-current-plot "Trends-of-global-reputation"

5 x7 t' z( x4 d$ B! C( f% [/ B) }1 d
2 {- [, h* _6 O3 P/ Y( @4 _set-plot-x-range 0 xmax

+ [. K% W2 @& G+ z; n7 g) U/ p. c7 ?  o+ }: l& U( I
set-plot-y-range 0.0 ymax
/ d2 P: w& m+ S' {  {
end
* t  K( I) E' ?) \6 `. k( o% n$ d5 Y( v! A/ a6 Y) R* y
to setup-plot3
' g2 c0 Y3 q2 \" R: S5 w4 n2 Z5 Q* X% Y' z1 m
set-current-plot "Trends-of-credibility"

) g' ^# a7 h$ h; G! s4 A; }% c- X+ m- f+ k- F4 U$ A4 L
set-plot-x-range 0 xmax

# w1 i" S) X/ l" K- `1 j( ?# i& p5 G  S' q0 m0 c& E" A# x0 k1 y
set-plot-y-range 0.0 ymax

- u6 ?% _% X; Aend* K: J  m$ s6 \6 p7 A

" X; Q: ~) s/ U( D2 h$ Cto do-plots
, U' G0 }! u4 c  o, iset-current-plot "Trends-of-Local-reputation"3 t& Z! }: A- Q6 s1 x  y
set-current-plot-pen "Honest service") L. n4 s* ~+ B" x
end1 ^! \7 Z; {! {; c. N! v8 k
6 O; ^5 z4 }$ S3 @6 x- A
[ 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.+ _/ p0 c) G3 C9 R
/ v9 M% c( T" Q
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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