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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:# c7 W* V3 J1 n' w
to do-business 3 E, K4 ?/ I4 z
rt random 3605 E/ _" c6 r( l& \" G# O! T% q
fd 1
$ s- ]5 d. [# y; l% g- X- ?$ n1 h ifelse(other turtles-here != nobody)[
: m, q6 p: r- E- G   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.
4 g" n0 X. a% ~# T0 P$ N   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 o* `! Z! e5 A" p
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 d( ?) M) c8 F& S   set [trade-record-one-len] of self length [trade-record-one] of self) S- R9 T: q1 E$ Q9 E, y
   set trade-record-current( list (timer) (random money-upper-limit))
& w* @; y9 E6 c2 m" M: V/ R+ G; N- X9 K
问题的提示如下:" T7 b  n. y* f2 o  a
$ k0 H6 m: F' u% r& `/ l2 v
error while turtle 50 running OF in procedure DO-BUSINESS# k$ w3 \: w7 R( G/ U$ m% i
  called by procedure GO' ^4 N8 }* q/ X% o% }( N# _3 K
OF expected input to be a turtle agentset or turtle but got NOBODY instead.% M3 I, C5 o) K* Z
(halted running of go)
* h0 I; ^) F8 U2 I4 E( ]8 q3 r2 o0 g7 i: f7 ]7 N# S; U3 y
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~~
% w/ m6 T8 b7 U; z% l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' G5 ^( o" V# y
globals[
2 ]1 o9 |6 c  c3 I  W* g# |- q7 bxmax
5 P( m5 \* e! d, \! }ymax
- d$ Y- P/ o. o  Iglobal-reputation-list
( l* a4 b9 i5 t) B# J* ~+ y/ T; \! _2 h
;;
每一个turtle的全局声誉都存在此LIST
7 [$ ?$ u! w' w+ M2 [credibility-list
- ]" o5 M/ p! L8 w, f;;
每一个turtle的评价可信度! R4 |; E% ]# b! D+ P1 @1 B- d
honest-service& ^9 G) C( _; C/ F6 K4 g( @
unhonest-service2 ]' B" U) D% }, Y
oscillation/ b- D/ L% I8 s3 u/ j( `1 t
rand-dynamic
5 D8 w! v; @5 ~3 a5 K& C: S. i$ _" b]
+ ~# [! f1 T0 |) `; C  C# s& S) N* D# b" \
turtles-own[1 w, j" \' k* d
trade-record-all/ T6 n- L5 L8 ]
;;a list of lists,
trade-record-one组成7 p% _* ~9 ~! [# c/ K" e
trade-record-one
- z. O; K6 f! o$ ^/ c4 a;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
6 f  E" J; g/ ~
: ]1 i3 d, {1 R* V;;[
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]]9 N" D3 v( w, H5 j* l, a
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 k9 h4 Z5 X* Q4 p1 y% V# X
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
, A" J& p7 R7 ?: g. x& T7 }neighbor-total$ y* a8 ^3 J# O0 _$ x) ]
;;
记录该turtle的邻居节点的数目
) A& N5 S# ]/ o6 X* K( S. a2 n& wtrade-time
9 i7 l& H8 Y- E, q( C;;
当前发生交易的turtle的交易时间
. P8 ]4 S! x5 T+ Z8 zappraise-give
* u! l( T6 F) G8 `# n% d1 ?# z;;
当前发生交易时给出的评价
6 x& K+ T, Z) h( h- K% Iappraise-receive: V4 w- e& s; B+ Y' ^
;;
当前发生交易时收到的评价
2 p& w+ h+ w4 D( G2 c  bappraise-time4 ]3 |, s3 d+ K/ q6 ~- l4 T7 v5 v( T
;;
当前发生交易时的评价时间3 _9 N! s9 F/ l5 o
local-reputation-now;;此次交易后相对于对方turtle的局部声誉6 n# l3 n% G" H
trade-times-total
6 Y; N5 k" ~/ B9 R4 l# I4 m$ i  `;;
与当前turtle的交易总次数5 _; u! |$ f7 j; j# }9 d+ T! p5 T6 m6 B% t
trade-money-total
, S3 ~/ h& x% A# c3 w6 n( Y, w- v7 k0 K;;
与当前turtle的交易总金额+ u! B; L$ @' L, T5 B7 s% c6 s+ n
local-reputation
1 f+ l. r! T0 Z5 m- Kglobal-reputation
- ?' z% D3 `( s& t( kcredibility
3 D7 Q! X2 F3 g: e+ R1 ?# Y0 H;;
评价可信度,每次交易后都需要更新
5 q% O/ D8 K; a! ^credibility-all
" r+ s, a! N" T5 p. O' u& K$ [. s;;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
8 [* C# C, e' m$ W; N6 d; X
0 {' x+ m  B5 G; m6 R) L% r;;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
* X* e5 W# A8 G7 \( A5 [credibility-one
+ D6 [7 U4 t+ n8 I/ [4 g9 L9 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people5 d4 M% C7 R* X5 q. G/ H4 x" g
global-proportion! j( W" ~9 D' C/ q
customer6 D2 o: Z; y* @
customer-no9 R  [3 q3 g9 \& g( I
trust-ok
) t. U! m+ ^+ rtrade-record-one-len;;trade-record-one的长度9 ^8 s2 L! y8 p* v
]
  p$ n2 [  T. r' R2 ~9 {% x8 c( h3 R0 _
;;setup procedure
0 X- k% p) R7 `) w/ g) d* C
. t7 O/ @+ d2 w9 C1 D+ {" h$ u$ Rto setup
/ t& ]7 d. c3 e1 J) R. n, f9 \$ @* M
# @3 K  S: r3 ~# }5 d! yca
& `. B+ a; v. a* q, Z4 m- k  o. q& W

) ~8 B& d/ f, q" J$ Qinitialize-settings
+ |) a  Q9 W$ `* n6 u. G
0 `  t1 {7 @8 `/ s, _. p
crt people [setup-turtles]
; f7 |7 d, K* q+ k0 F/ a

/ i6 A* T8 q6 y3 N; F# Greset-timer

0 E% w2 H" r5 S4 k& o
; M4 @  i4 u0 }  U2 ~% b& Q3 Wpoll-class

8 L2 Q8 |3 I# \8 r. N+ ?9 d$ C8 m9 I, i
setup-plots

2 ]% f) G* f' S& r- g6 l7 C9 l+ k) A0 ^
: {( z2 E2 B1 L& S  ~* H7 ado-plots

" U" V. c/ C. D' Dend
( k, G8 G9 n4 m) |1 B- _# C
& t$ e, i. p4 Xto initialize-settings
. p+ k0 ]8 L7 Q0 r
0 @5 ?1 D; `5 [' X3 K. yset global-reputation-list []
2 \: @! G# I& i: h8 S& ~
  q" P$ C  a  T  ^9 |5 u
set credibility-list n-values people [0.5]
) t- r8 B! N& t1 F4 C6 ]1 R
; c) N* S) x) w& r0 x
set honest-service 0
% `* k1 y( Z8 W0 e, E
7 q4 ~( {4 j1 _
set unhonest-service 0
( o; G) r4 M- `: [/ J7 m8 X

9 S; ~& ]5 s8 M# V( n! g: {set oscillation 0

  V" X$ A! a4 @$ v7 x" O* P9 l( Z' V/ b/ }* h( w
set rand-dynamic 0

  F! ^; e9 x& E* lend7 o7 n: b) q2 T6 @5 K% s
* W2 B/ S1 i: S6 d
to setup-turtles
+ [# l" U; _( f* U$ \set shape "person"$ v4 a  i; O( e1 Z1 X; N
setxy random-xcor random-ycor* e3 ^9 z2 e+ Q7 D) G6 y* B' R
set trade-record-one []
$ ~* m  Q! y; _
, r! Q4 p7 \2 Q: {- y8 S  W) s
set trade-record-all n-values people [(list (? + 1) 0 0)] 4 |- K/ t1 t0 m9 I1 b1 q

; w2 ~+ s( t9 j5 Z; T) z; ]set trade-record-current []
2 C" J. h, J" }' G" Qset credibility-receive []
$ u% W0 j3 I' ^# f3 [set local-reputation 0.5+ R) N4 {1 v. [* q( [+ y* c
set neighbor-total 0
* C/ F$ q0 q* \9 Dset trade-times-total 0
8 e: J) `* {" x) s& t5 q/ V( Sset trade-money-total 0
  L" e( e+ ~0 G) i/ t* e# yset customer nobody1 T. j$ W) J; V0 N
set credibility-all n-values people [creat-credibility]
" s: M$ s0 ]) P! N: ~, e# Fset credibility n-values people [-1]# C4 o' K9 m  Q8 C0 }  V
get-color
( M) |0 V) T  L( R: M

. {; M8 K9 a. B' Z( O; Jend
" ?; A% Y, [2 w+ M
) n% R; a. W/ H+ kto-report creat-credibility
8 C# Y) g8 ^/ w, f: X$ |6 zreport n-values people [0.5]2 B4 j) P, S* G; z+ g0 ^
end
* D* K# X" a1 C2 `6 e6 y/ S" w
to setup-plots' K5 q% z. Z0 w4 o
) Y: [( k6 n0 m  f
set xmax 30
2 _! d! Y2 M& h9 q  l+ B; |

( Y- V2 g# x, r% }* V2 g, I% ?" Oset ymax 1.0

+ s: [8 h% k9 {4 D- @: K5 X8 N' ]) M! k% B0 q% V' z
clear-all-plots

5 ^  w; g$ U1 q) a# Z' b. H) \
3 l' o+ M1 U, @; Nsetup-plot1
/ a2 F0 a' E' n+ ^7 m1 E' A

* ?2 J6 W7 G/ Asetup-plot2
: |- y1 p/ s9 y+ E3 v
8 ]7 |* c$ [+ u# d7 y( x
setup-plot3

/ k* s& n* l$ R% O5 h  U) ^end
1 F/ d2 _( J6 n" ~* f* M. b4 k1 _! Q: T7 E3 J
;;run time procedures
7 x4 N! [( f7 L0 i* f/ ]! y$ M. o- }( w
to go" d, p) O$ g! C! G" T5 Q) i
( L0 ?- y# d& o+ K: {0 C6 r& e) r+ h
ask turtles [do-business]

  a- ]. b/ L& L" d7 Aend
: s. t& E+ X2 M
; b$ A$ r% u( D$ H6 \9 _" c" tto do-business + E6 n% w  _& k( L0 E# ^5 A0 D

4 b: i7 o9 g( \9 `3 s! g
) \8 f9 n8 g: y& Mrt random 360

3 R! [8 ?% W: Z1 @$ |& f9 w+ ]/ F: V( k
fd 1
% K7 |7 X% O2 ~2 H" @
9 G) l, K) p5 x( i
ifelse(other turtles-here != nobody)[

( ^) v- h' O% F9 G1 g/ }6 Z! J4 g7 ]& i
set customer one-of other turtles-here

: u4 \! l; q! g, w' X) _
* e" p/ ^3 B7 Q( r. N$ q* L7 r8 e% T;; set [customer] of customer myself
- u* p2 u. ^* t  z0 g1 r/ b: T6 m

5 Z4 a; \+ Y* nset [trade-record-one] of self item (([who] of customer) - 1)
) t$ }8 v5 R6 q" B7 F[trade-record-all]of self' x  }9 h$ \8 l' o
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

9 F! \# ~% p7 x6 R( U1 V, c6 @; G8 s3 o% n) z# E
set [trade-record-one] of customer item (([who] of self) - 1)
; L( P7 G# m# T& f5 \[trade-record-all]of customer
) D/ ]# E8 N9 R. g  O; a

& l3 d% ~/ i' F% wset [trade-record-one-len] of self length [trade-record-one] of self

& M; Z' k2 _% X% U3 x7 r8 F
8 v, y3 Y; v3 M( L* l/ Vset trade-record-current( list (timer) (random money-upper-limit))

+ y2 M* K* m) o1 p4 G; A( X$ B7 m9 V
ask self [do-trust]6 d$ b) U) c7 L
;;
先求ij的信任度
1 M: R4 t! _" d" I" |
1 U# X. u4 b& U7 I9 m0 Yif ([trust-ok] of self)
$ \, ?  l. K/ W;;
根据ij的信任度来决定是否与j进行交易[4 u; k1 \  w0 X: B# [
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; e0 P% d- J$ J5 G! G" G
" [) \! n8 Q4 Y/ Y
[
% k: }" U; e! ^* E4 {. g( f
6 W- ~) k6 i0 k! y
do-trade

/ F8 @0 W8 U# q
/ Y1 J  L, ]+ ?, T7 Pupdate-credibility-ijl
- |4 w4 _; I- ?# E, ^
' |9 Y0 c* A1 d& \3 [& I# b
update-credibility-list
1 k  s( H8 X0 z
7 j, Q2 H; r4 L2 J* n
: x: {- A. d8 c& [3 Z' ?
update-global-reputation-list
% w+ e' F! j: Y: P. h; k& @

7 f, Q, i' p8 q1 ~poll-class

  s7 Q! D4 p5 _4 Q2 m) u  _4 ~5 ~
0 g% M+ w6 b* n% Z& y6 q1 h6 xget-color

* U1 ?& `- [/ h4 Z4 m* S
2 @* \( ]$ U; Z8 ]+ `3 ^. A7 c]]0 S, g8 ^4 |4 Y- G2 |8 D# b* m9 t# V' [
& y0 }4 M6 p( Y0 s  x7 L4 e9 T. S& n
;;
如果所得的信任度满足条件,则进行交易! m  B0 F' X, |# \. M& F2 Z

+ x* S1 j1 C5 P3 y* f[
  W4 e/ B8 W% p1 w3 y, T4 c- S
& l% Z" N+ F( N
rt random 360
. B; d$ ?# b! r- [& K! u8 a0 E
) D7 _8 E$ f, U2 O) p
fd 1
7 N% r: p5 O( O- P0 \

6 T+ T: Q) I4 u1 a. h9 @4 m]
- J6 _4 q! e9 i# d! \' s- t# p

# f3 f: I1 |* q1 q( G- vend
- j" S; e5 ~: p/ o1 K' `

8 U: b3 O* I6 M7 N5 H5 n" `to do-trust # B- F4 N% f/ o, T! x
set trust-ok False
$ \0 q9 a3 }& T/ |# l: N/ z
) M$ Y( D, M  S0 a3 z" f6 W
- c7 r/ ?6 t( t0 S% u2 F
let max-trade-times 0
8 U" g% |6 {. W4 z: b7 [) cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" L& C% ?; S+ ^5 E/ p  |  K3 rlet max-trade-money 0; e# [( M4 H. `- W5 S: H" S
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  L4 L1 Q4 [  ^4 I" F
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" I5 v, m6 d8 l: {

& Q9 [% Q* N1 e
- C$ j. H- i  E$ G/ Q" i/ Z
get-global-proportion3 H7 c: F0 v" y" F) K! z
let trust-value) d. Z% t8 W+ |* _# 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)
# X0 m; ~) v/ u8 ]6 S0 J$ Z
if(trust-value > trade-trust-value); h' Q- W! v  j. G2 j  q! N
[set trust-ok true]# D8 x1 }# f2 B- x, Y
end
* s. E+ g4 G1 D8 L* Q6 c8 v
/ [/ X$ R$ q6 }: dto get-global-proportion6 D7 s3 l- c4 Y- f& u( t
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ a  t* I# i  b[set global-proportion 0]& D4 E3 l4 q' I* `
[let i 09 s' j% i1 i% u9 r# p9 w7 k: i
let sum-money 0
# M5 k+ l5 C4 [& K: X7 B! |8 Lwhile[ i < people]
  A, p- c' J5 b% w- v# I[
" U: v! j& K( N: ^. Qif( length (item i
0 e5 U, H9 G, c/ B  M& H[trade-record-all] of customer) > 3 )
3 q6 M; G' V+ i7 p3 j
[) G) J7 r% }+ K* F* T7 Y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# t: W0 i/ t, \2 u% @2 P
]
) c& I+ Y3 S% R! e4 e]
# Z* x, d7 @% h. d" R+ Q' h1 }let j 0
4 y; O5 {/ ~0 d8 A0 W9 @+ W0 xlet note 0, a0 w: ?( P) e( V( V
while[ j < people]
* y. l4 L3 D2 {+ z# Z1 i[4 x# d1 l5 z& s) [! o3 I
if( length (item i
3 k/ F: ~) f7 @; t$ J: J[trade-record-all] of customer) > 3 )
: Q0 W4 p. _  e5 K: n# o3 }3 B0 h3 g
[
5 Z( O) J# k! M& H4 s6 J8 v6 g* e9 sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' L/ o7 _( L) [# W, P5 X[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' @# f  H8 y3 o7 A9 G" s& f
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
* k, _: U$ k# p, j]
, E) r. i; [6 N3 v. f5 Q5 }]. e# I. ~1 F- i7 Z. W
set global-proportion note6 }6 W% `$ [3 {( j, W9 y
]8 f5 l$ X' ~) H
end# _1 l/ D& f# }

2 t2 z' @8 e" Wto do-trade7 T" z( v1 g* X3 w& d& W$ ~# j
;;
这个过程实际上是给双方作出评价的过程
9 `( f9 E1 x. M9 Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 f' Q, m  h, W, J. D& V/ d  E) }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
# K5 T# d( Z( C* }set trade-record-current lput(timer) trade-record-current
8 ]+ I4 C  {3 \; J. _;;
评价时间, u0 J9 U& T0 m- H, Z3 H
ask myself [
- y/ d& [* _0 _5 e1 R- o) b3 V/ \% Bupdate-local-reputation# s# J0 P2 U/ H4 N
set trade-record-current lput([local-reputation] of myself) trade-record-current. t3 r! M8 Y+ E; H3 u# s! T
]7 \! _& Q5 C1 D# Y/ v
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) T1 Q% T9 X' D8 y4 k; U;;
将此次交易的记录加入到trade-record-one
4 @. J0 `: h9 Q' t; mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) V! T0 n) h0 S, J( A) G+ R
let note (item 2 trade-record-current )
1 b) ~( G0 W$ D1 c' vset trade-record-current: \- ]: B. T+ U! m1 U# A
(replace-item 2 trade-record-current (item 3 trade-record-current))
0 W$ d6 ?$ X8 V+ V. s" y) d% L
set trade-record-current! d2 H, o6 M1 K3 E
(replace-item 3 trade-record-current note)
: D5 |+ N. X- W  d
1 p! w) `: J; t4 ]4 ?9 o( @
0 j- b% `% l) c! G" w1 @) A: U
ask customer [' ?/ w. ?0 n0 D, Z
update-local-reputation
! V  c7 [) H' E% C4 Uset trade-record-current" L4 U4 g9 K. ^3 L3 M, A
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ P) H7 |, T0 ~+ G
]
7 ?! k. u9 h$ Q" P7 p2 u% R% ~  h  K2 o- n8 u
) I1 p; V# q& u
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ \. ~" k% H& W. d9 U+ G! O$ M

1 r$ l& C! g2 K+ r1 cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( F* _) G- h5 F/ e9 P1 W, P9 v( F* I;;
将此次交易的记录加入到customertrade-record-all: ~: @) \3 H9 S4 l
end7 f0 z0 {: e  C" |" W. \: Q: E# w  v& d
0 h: s/ H; g6 o) [! L1 E
to update-local-reputation
+ r8 ]& K* c( i  d. u, o0 n' wset [trade-record-one-len] of myself length [trade-record-one] of myself6 v$ Y/ M. D8 E: [
% F1 g6 S' v. ~+ t1 i( d: y) v$ O
7 v3 K# u8 |) ~9 n4 G) e5 c
;;if [trade-record-one-len] of myself > 3

( U% l2 T( r" {update-neighbor-total
2 O' S9 Y- l& @* i0 ^;;
更新邻居节点的数目,在此进行
7 @# L) S/ u  q1 m& m9 Alet i 3
# s4 {" T$ T$ a6 nlet sum-time 0
+ b# e7 K0 x' nwhile[i < [trade-record-one-len] of myself]
3 m% u% j# b) d& D[# A" z6 k8 G( Z2 R& v% P) r
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( @6 u$ ^- D- `! Xset i
3 B: M+ [+ y1 h' u! X: q! J( i + 1)

# t- s+ j% j# L, d  x]
- m# p: c. v9 R8 h+ Plet j 3# L1 N4 M- L4 R5 p6 A1 w7 f
let sum-money 0
) Z5 y! f5 H* @- E4 p- r. P; nwhile[j < [trade-record-one-len] of myself]  v! \$ Q4 H) V# s
[
# L8 d% r1 K& Zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
9 e- l) p" _/ U! Y  p( W: a4 Fset j/ I& X* l5 c3 V3 Q
( j + 1)

2 ?2 l4 |  [0 G' W9 ?# ^]1 R5 z  b$ j0 T# c8 U
let k 3: i( `" N3 T9 \* R. y1 C# d
let power 01 n( L! I7 {3 B3 D
let local 09 j0 t# t9 B; i4 m; s! Y
while [k <[trade-record-one-len] of myself]
3 g4 P2 u/ s6 ]* ]/ M[% P$ W- q* s' F+ p7 z  R: A% v
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)
7 ~2 h3 U4 r* G8 q# n, @) nset k (k + 1)
! Z1 S/ p. H2 r) s, L]1 b+ B# q& H0 w7 l0 Y! D
set [local-reputation] of myself (local)* C! {1 ^. S1 ?( S  E2 W& [1 A  w/ k
end
1 J3 C6 n# k0 e) O9 ~1 N$ a# f# P0 b7 O
to update-neighbor-total
+ v) H% e$ c, @8 ~: s. e/ d5 L2 d7 S. k& x8 N# |
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  p4 X6 _& S* l; ~
9 P8 p8 {* e8 v; C5 x5 U
: s) G, K' j  {" a4 A( l' y# y* g
end' Q* B9 n0 Q) Q$ l8 N: O

  H# k4 U8 Z9 uto update-credibility-ijl " u( f1 q& A3 O. q4 U; h4 J0 a
) u0 i+ M/ \, B. y: Z  C0 W
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。% _) ^( {6 N2 H8 D* F$ Y" q- h+ w
let l 0# {* v6 T3 i& b- b8 A  i' H
while[ l < people ]' @* `9 [# h$ W$ l+ S9 C+ b
;;
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: K  j4 j4 V1 b/ t1 @1 d
[
, H2 a; b* c$ Y+ V  p" p: v' }) plet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( D5 X, x& l' Bif (trade-record-one-j-l-len > 3)2 Y$ N7 J4 S6 T7 G
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
: V* A0 u# _/ alet i 3
% c; ^7 x5 k; l3 k$ R) P8 Zlet sum-time 07 e9 Y3 N8 o" s' u; Z  e: S
while[i < trade-record-one-len]
7 l8 t8 \% E3 Y$ n, X! l8 t: C0 r[6 a2 ~/ O# Z9 K- e3 Z5 T" a
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 [( U; A( L3 |9 q: J. o% V% X/ }
set i
& a: Z1 _/ C1 ?4 \( i + 1)
* x0 g( @4 l2 M+ p- r! y
]
0 a; W: A0 |0 [4 b2 ?, D# Plet credibility-i-j-l 0% o$ u; g2 r5 |5 z) G  O+ d
;;i
评价(jjl的评价)9 X- ^! J  \2 V4 U: [. T" B: W
let j 3" d5 m% T0 Y4 |3 ]% s  a
let k 4
$ M' d# e' M/ |9 \0 H8 ]1 Nwhile[j < trade-record-one-len]  y9 H: \. \, |# z, T3 A
[( o6 o5 m! k8 W1 u4 i
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/ F4 H& }; v  E' g
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), K0 O4 g3 e, ?2 |- |7 ^2 N
set j9 ]4 l. M# \9 ?$ L
( j + 1)

+ P6 M$ k8 x/ ^+ c" q- U]2 v8 z7 N" I0 [( S) N" L
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 ))7 k# M1 {! t3 |4 i; o1 {

, R4 Z( k# o+ ~% p& U  `

6 P7 T; ^' `" B9 _" j; llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- P4 ^/ Q! [0 y4 r1 @% f" P) `
;;
及时更新il的评价质量的评价3 u: z) c5 G! Z/ ?  n
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 d# H! z: d" G3 d2 b" P% s' g
set l (l + 1)
4 Q; K- S4 ?/ p]
5 K+ s+ q% t, j$ @6 r! v; d! Jend2 x4 S; L3 ?- M  a

3 \7 a- {3 y" V  M1 Jto update-credibility-list* O% n) B- X: F* F( t7 I" P3 w
let i 07 O2 w3 C& M& J; z2 K. J$ L
while[i < people]+ w! C$ U# l# W5 E/ ?. Z! K
[
% C7 Y  p) d9 Ilet j 0
& J+ K% Z0 Q- N9 Z# t/ Vlet note 0
% g4 T+ A9 x$ G  i0 rlet k 0
2 U5 `$ R, ?* U8 P9 z;;
计作出过评价的邻居节点的数目
$ q( q/ [: [$ m3 I8 h" L  S  o6 Ewhile[j < people]2 b  Z; R" f, ^: k: H8 i
[
- m8 H. g2 r4 m* W; Tif (item j( [credibility] of turtle (i + 1)) != -1)1 f% G. ]+ s4 n* L* z" D5 x) D0 p1 o
;;
判断是否给本turtle的评价质量做出过评价的节点
& _2 u! v( B4 R8 n4 p, V- T- o' E[set note (note + item j ([credibility]of turtle (i + 1))). G/ s" U& l' D. D" p' G. d
;;*(exp (-(people - 2)))/(people - 2))]

# f; L6 F9 e! q. Eset k (k + 1)
; C5 k2 Z3 N- H& }# T! Q. f" Y]2 ~0 ]- M8 H0 D3 `4 K9 G0 \8 [
set j (j + 1)0 C: y5 C/ r" s0 ^9 d7 K' O
]
% Q+ C7 L& N3 }9 h( O% Cset note (note *(exp (- (1 / k)))/ k)1 h/ J4 E" q- A5 k8 x5 c
set credibility-list (replace-item i credibility-list note)' f3 e& U1 \( j) w8 ^) @
set i (i + 1)
0 q& a' ?) ]$ x3 u6 s+ ?: Y( p]5 T' J$ b" [8 Z/ J2 A" X4 I
end
/ _7 g9 {" [! P% r8 r3 G+ u8 q5 j
8 k3 N6 R. W. F9 `8 U( R) ^to update-global-reputation-list
' g3 @- ?5 v  F; i; {let j 0
+ Y& b4 o$ k5 K; {( iwhile[j < people]
6 u/ K: [3 _& G' f. t0 P# b[
; r. Z- D% p# P4 z  |& slet new 0, A/ }" s) }+ k4 P! ^
;;
暂存新的一个全局声誉
* W) t# k7 ?  \9 _/ Wlet i 0
  ]2 L$ \6 p: c$ b$ }  Olet sum-money 0
8 g7 ]- O) f) c+ N: v: L) ?8 Hlet credibility-money 0
+ l9 C( X9 ?) ^! F; G# bwhile [i < people]& G- a' Y1 y, H% v/ e' s! M
[7 m, U$ |) n  m: U
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' n# }4 i8 ?9 a$ z8 pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 B% U5 l3 U  e4 p0 F0 M; Rset i (i + 1)1 {7 w% k. a- y- I, {
]1 {& `5 `6 W5 o" O$ f
let k 0& v/ q" }7 g3 K
let new1 0
+ W& K- x$ |; L$ kwhile [k < people]
5 b( _7 }1 j, i/ K4 j1 U1 l[
7 W' Y+ y4 R9 `) J% G% J8 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)3 s( q( g2 g+ F- t* s+ d
set k (k + 1)
) g0 v5 l5 M3 \% t: T+ b]
! A4 q' D* }, h0 q: oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 E1 l; p( E( {7 c
set global-reputation-list (replace-item j global-reputation-list new)7 k7 z; L( v# S" a
set j (j + 1); E0 C+ P* N# }) t! n
]$ D/ r! f$ X# `- y; j
end9 K2 e2 Q) i  r1 y2 I5 L1 T

; ~& H7 }% `* z5 U8 B  h) ^: j) p+ j- |3 J% ?6 E* p

* F7 \- r% u! Y+ X/ j! qto get-color+ H& |( ?/ U8 j4 \+ Z

8 X- d5 _5 W# Y  i, T  dset color blue

5 }" z1 K2 W, _! p/ r% W5 Vend0 U. N* N# X/ D5 ^; e6 U) x

! S4 u$ h: I5 l. F+ h9 ~; }to poll-class
) ~7 t) H3 E' X; Z& Wend1 \& }( E4 ]" x) K
) ^. I' J7 P% c
to setup-plot1- `! g; I6 i7 ^0 \1 d- d+ Q/ x; }

1 t/ s! ~, B! a' s/ hset-current-plot "Trends-of-Local-reputation"

; _2 a/ d" a  e. Z: \
0 d$ w: e3 C! ^5 f5 h9 Z" I7 Zset-plot-x-range 0 xmax

4 S4 [6 O' ~5 z1 ?/ D  \: c' `- M6 Y3 `5 {" L
set-plot-y-range 0.0 ymax
9 Z! [: _2 o7 x4 V) K
end$ {) U( H5 u! \* k1 J: j7 Q; E
% ?* k4 t9 [) M9 u
to setup-plot27 V( c: C" I. L; V9 o! h
* j8 U7 n) n$ z! b/ ?
set-current-plot "Trends-of-global-reputation"

7 o0 R; \0 g* J0 f3 g$ y
/ ]0 B0 w7 k3 g2 I$ u. B/ W0 ~, Tset-plot-x-range 0 xmax

7 [: C+ M( F6 B% e; j/ [0 |3 y! w3 O0 N" w- R4 _
set-plot-y-range 0.0 ymax
/ k" e' n8 b$ |% m6 _
end1 O' m9 |( n7 j6 q( O
; c3 f2 x" U/ [2 q9 S
to setup-plot3
! x8 `* a& @$ A9 \+ e
" Z, Z$ ^* J" D1 Zset-current-plot "Trends-of-credibility"
. P7 z, S; ^. |" A( H+ `- b

; ^, w& s6 ]9 C8 q4 R3 ?: Eset-plot-x-range 0 xmax
& n. n) r7 [+ h* _

7 y. z7 r2 ^( W- N0 F: fset-plot-y-range 0.0 ymax
4 B2 @& X/ E8 S4 V' M4 j4 T5 `# Z8 B
end' A% A5 Y6 D. D$ ~$ ~& b& U" t
8 H8 C( b% {* s% W( N6 K1 `4 i' f
to do-plots
( Q9 Q' w2 D$ }' `; W6 g" z( _) _set-current-plot "Trends-of-Local-reputation"6 \3 ~: Q$ l4 ]- m& m' ^7 [
set-current-plot-pen "Honest service"1 @7 c; K" D. j. m- {* l, s* m
end7 ]$ `" P4 F1 \! C
: ]# K" c3 Q% W" _# F
[ 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.3 f' v0 n  ]( X3 v3 b: W

$ b( z% t& [, T+ Y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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