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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:; ~$ x( f- y/ Y4 n
to do-business
) K% {/ V  `6 p+ D% ^5 `. _9 D rt random 360- x, \% Q& K% I+ e8 [7 q. r- W' ~
fd 1
% H  N. M# y: {8 Y2 e. f; x ifelse(other turtles-here != nobody)[
3 b! S8 b9 c4 N( X# O; Q   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.9 X9 ]9 V/ T1 D4 X  }2 S8 p! Z. ~
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 V- e% _/ a0 D; _+ y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 ?' D% U" f, c& {0 B: s) W
   set [trade-record-one-len] of self length [trade-record-one] of self) V( z) V* w# q2 V3 P
   set trade-record-current( list (timer) (random money-upper-limit))
1 Y3 {9 d/ C6 S  v( N" f4 u/ P8 Y; z' Q# ^3 }6 U* J, B
问题的提示如下:
+ R7 R0 \/ {6 A! j$ d% i( H& [% @' k# D/ q8 ?! |, C' i
error while turtle 50 running OF in procedure DO-BUSINESS1 b/ k- H" b7 m9 l  p" S' g
  called by procedure GO
% M2 G+ ?; H& a, q3 q; qOF expected input to be a turtle agentset or turtle but got NOBODY instead.( n) [9 ^3 J. g1 [2 r4 _: `0 x' I
(halted running of go)9 V* B, H; P% B" P+ w3 A; y! f0 z& G
0 R& l! G- ?; s% P+ O# I$ D
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~~
$ b! s  T$ W' O2 B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( I4 D$ G/ w6 x7 p
globals[0 i0 k6 c2 k7 p1 D
xmax
8 s+ y- m& e+ N# A1 v  Bymax& Y4 }% |& z# P! k1 b0 V
global-reputation-list
0 t! F+ O) M6 c: L6 ~, C' A9 [5 W% w" w! i
;;
每一个turtle的全局声誉都存在此LIST& U' x. K1 S3 D( `3 W( H
credibility-list
% ?! |( O/ W6 ?, _0 i;;
每一个turtle的评价可信度
( J5 r- _4 q2 S/ ghonest-service
# \5 y8 c( x& l+ xunhonest-service- n. d' A) V' o/ n  ^2 N
oscillation0 f; }* F, h1 M+ ?8 f
rand-dynamic8 m1 s+ e0 \9 _( x! e5 Q
]
7 b( C) O1 a. X1 s  q# |* B" x1 }1 [0 u0 R5 {! T2 v
turtles-own[9 A" G, C# q$ b0 ~3 g& {
trade-record-all
" L7 Y) h; C; W2 M8 a* };;a list of lists,
trade-record-one组成
0 k1 G; s. s8 |, _trade-record-one4 ^: B5 b  O$ R! g) 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
: v4 Y- b9 {- N! z& R9 E
, S, \5 z! F, [. d  S# o;;[
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]]; q" F& Z% c2 L: }# \; a6 `7 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]& |) I0 Y3 r) N9 h" o0 f
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
, T" b, z0 l8 I$ J; eneighbor-total# i7 t' A9 r& [+ Y+ }$ ~
;;
记录该turtle的邻居节点的数目; v) C: v2 C" t. `
trade-time
! ]0 k& }8 @3 C: j& Q;;
当前发生交易的turtle的交易时间
9 ]- C% h( [5 U7 {0 w6 x/ Tappraise-give  C6 |6 V7 b4 I9 l* [
;;
当前发生交易时给出的评价
+ I6 {; m# g7 n0 o7 Uappraise-receive
, e9 a1 }, j4 y3 P9 ~( J. ^;;
当前发生交易时收到的评价, Z- V" E3 [+ j, Y$ p6 [* K
appraise-time* v# X) b+ p0 y3 o# q. y, K
;;
当前发生交易时的评价时间, V3 ~* {; q) F" m7 i
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 I; F: S: X5 N# k; U2 }* L, v( l
trade-times-total" h5 \, q% I, P  ~% |, t- h& M% J
;;
与当前turtle的交易总次数
1 X( \5 q) {8 l2 r, T! ~' B1 u9 ktrade-money-total
. W6 W  ^, ?2 P: G;;
与当前turtle的交易总金额4 d/ f2 x) y$ L! K2 x6 A" M
local-reputation
0 M( c' ?2 Q3 I, {: E$ fglobal-reputation
( }' j  ?3 c+ S9 ?% M7 |, wcredibility! B8 ?' o7 B/ z. u4 b8 x
;;
评价可信度,每次交易后都需要更新3 K- ]* `; x' r5 o
credibility-all
3 g2 T1 j9 \& p3 @- a* L5 _* E" Q;;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
# A( m! a" O* b2 K( w' S% `( F# N
$ X: b5 R9 W9 U/ C+ T3 I$ ~3 T;;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: z0 E( c" W- f
credibility-one
* M, |: C' ^( D: |. o;;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
$ c+ c# l/ N6 oglobal-proportion0 t4 }1 q4 l( {. r$ c
customer+ N+ H5 ~' p1 f9 S% i
customer-no* _$ G! V6 s* Q# G: {# C+ }1 l
trust-ok! ?: w9 H" W/ W3 N
trade-record-one-len;;trade-record-one的长度
& g; v4 |  d2 ~, i4 z]( q4 R$ H9 P3 |6 b

& y) X+ s; f( K% P;;setup procedure
0 ^; C9 p- R. u
5 W$ ]: N0 M8 w$ \. {3 u$ C# tto setup. a3 h# C* Z$ E" d/ d, Z
+ @% W. ~% h+ F& m; M! u
ca
- @, e, X/ {6 V+ X2 o

1 w& z( X% b7 T+ O. {initialize-settings

' h* k* h# M9 f: s: l3 [  f9 g% V- ?% c* n7 `9 V: w0 ?# M
crt people [setup-turtles]
7 k2 J- w3 O6 d7 [
0 y" ?& J3 d2 O& ^+ Z( s, O
reset-timer
: ^2 c( J7 j! L/ H; K& \2 g
9 K2 N; z& j% D/ W5 ^
poll-class
* [) m& U. D& Z* r

* w/ m& k5 S; T* a: nsetup-plots

) D: j" ^  ^) M4 I1 \* @+ a
9 D9 D/ r/ S9 Kdo-plots

0 a5 b/ E, [9 V- o1 R) i1 U' qend' d7 n; Z! c/ d3 N1 d, m

* p* K6 J  N5 Cto initialize-settings
4 D! J, d) T7 h
) ~8 K4 g5 ?1 @9 Cset global-reputation-list []

. Y8 q0 @  H4 _. S9 _6 y4 A: c1 g+ C! a- z9 |
set credibility-list n-values people [0.5]
/ Y5 V, a& s+ @3 t) ]

0 U& E) B( t- L6 ~" Rset honest-service 0

# S- k9 h! u7 L% ?( X$ ~* @. {  o9 x0 S* z
set unhonest-service 0
* @2 H% A) F0 y0 x) R4 ~0 N6 m0 z
4 O% e/ C3 y1 Z% U5 l) Q) g
set oscillation 0

/ p9 P# P# o# w' o. K1 d
0 C1 I- ~+ _3 xset rand-dynamic 0
+ m5 X( K2 I4 Z$ Y
end
# ~9 ~, g+ q/ ^% {9 K7 `; D& W. f9 W+ s# `) V9 [5 y
to setup-turtles
5 `0 W$ a# h4 Z3 V" \' ?* Vset shape "person"! S+ l; _: Q0 L- F2 P  r. ]4 h' B
setxy random-xcor random-ycor) E7 R8 L8 ]7 Y* p7 g1 s' l1 Q
set trade-record-one []# A! ^. ^+ @" b# e* x5 P
, ]$ S+ T; Z: i" o( v! l
set trade-record-all n-values people [(list (? + 1) 0 0)] / N1 c7 Z5 @! I: C* H/ Y1 |8 g

0 o5 u. X+ O2 E  G& x6 Y& Kset trade-record-current []
6 p3 M3 w1 F% S8 n. f  z9 ^7 {set credibility-receive []6 W4 a4 Q! e  w. S. z8 F! f
set local-reputation 0.5, @! J$ Q  `7 ~
set neighbor-total 0
( m  X; J. m8 x' @" J4 x- ]set trade-times-total 01 j) d! a2 Y' [7 f
set trade-money-total 0/ ^% p, c, `; @7 s0 x- m( E3 _
set customer nobody
: J" x- t7 p0 @set credibility-all n-values people [creat-credibility]
! I6 l8 {* P2 I4 Y1 Kset credibility n-values people [-1]7 Z( Z, b/ \& V' t$ W
get-color
% p3 _! B0 ]: n5 n, A9 u
. E$ O% D5 r* @' o
end
7 l4 X% I* B2 q" @/ S! s
! |! ^. l8 g! N1 R. q3 Fto-report creat-credibility4 m( ]0 l" T8 E% p2 ^0 M/ [  C
report n-values people [0.5]
) Q# @+ e- h# B# s, k' W: oend- A/ S0 |. a: V" g$ S( n" f

) f7 t1 R9 g! B. A- e8 sto setup-plots: r2 N% R: w* D& H) I
9 A2 ?9 o) _' [% ~/ r6 b
set xmax 30
7 a) U! Z6 B2 b0 p$ C! U9 k' H8 k

  _: o7 d2 E( \# [$ ]" _- M) b3 iset ymax 1.0

/ k; D0 g9 `; P$ T# ~! D  b% m1 B$ ^, I
# E" T% C5 S" `1 Dclear-all-plots
* F! T( q! x2 i4 v5 E7 n  v! k# r4 a

, p( ^: N( y( w! s* tsetup-plot1

2 l, y; ~% ^5 H! _* O+ z
* r1 m# l8 K3 E0 d2 c3 X) ?setup-plot2

! L# \* ]' z1 J8 S/ b# S/ t' w
- F. c; r; J6 P2 |: A; ysetup-plot3
' Y9 n) q( Q, Q  d$ C
end7 _- Y$ C( Y/ A5 ?; N
4 W( s9 I; {# R8 O. S  f) g" {
;;run time procedures
/ L8 T5 e' `$ V
: N# o% f6 `9 y6 T! ]to go
+ }8 G) o; z& D6 J. ^$ p9 k- @% M1 ~" O3 d, d
ask turtles [do-business]

! x+ ]& @5 A% d0 p. {3 r3 g" A( s; Uend! p6 T' T) @0 ]
* X3 Y& m; P. e2 b8 w
to do-business 4 M; {- T. s, k6 U+ t  x& @
: C5 L& Y3 Z" V& n) c. {( b: @

# }! X9 D# c$ `! _' ~rt random 360
0 ^; H, z* V5 p0 ^4 R  W' ?: `

& C4 k( [+ h- C  b1 d. Qfd 1
, T% T3 E, q* f7 G$ m  o2 `

  V" r% l8 l! X. O. o% fifelse(other turtles-here != nobody)[
+ O8 ]2 ~! r# I
6 [, `5 A" I/ ~! P! j( u
set customer one-of other turtles-here

5 D# h  }' @9 [" b
* T( c4 x4 c+ y;; set [customer] of customer myself
  ^* m" o3 p7 I, a+ I6 h$ f3 C
( c+ X3 ?; T) M4 z
set [trade-record-one] of self item (([who] of customer) - 1)$ r1 `# Z, _) D, e0 n# c% J
[trade-record-all]of self) b- i5 j2 N; D: f/ t; w! p' ^
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' A& @6 @  {; L. o+ `1 z
8 h3 M' n7 x  _5 {# _# `7 k7 N
set [trade-record-one] of customer item (([who] of self) - 1)
; M, _3 W; H$ L: E6 k[trade-record-all]of customer

2 y" b4 }0 @; L" e+ a% U% O+ u% {
set [trade-record-one-len] of self length [trade-record-one] of self
) ^) _- y0 ~: S/ a

: t1 \1 {6 t$ o5 A' Sset trade-record-current( list (timer) (random money-upper-limit))

5 @6 i/ \$ @! W3 P8 m- ^6 s* b6 R& T. d$ |+ Y* C4 `' r$ U. a
ask self [do-trust]
) R. B* O8 s" t8 K;;
先求ij的信任度# g/ ]2 l) X: }; Z
* p6 O/ p) x+ J
if ([trust-ok] of self)
2 v- Z$ R/ |+ j( y0 H;;
根据ij的信任度来决定是否与j进行交易[
7 t: x2 R- V- C2 j. D7 J! K* f& @. vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 a8 L. Z5 h: W0 l# \+ R

) y/ z: ?8 D1 A( S[

2 D& U, p! y1 r) T1 C; d6 Y4 U! q; ?
3 Q7 \5 d1 w% `% a0 m1 K. @) zdo-trade

* J0 ^! h1 x; O, V
. S& a4 w# h( ]update-credibility-ijl

' ?7 M) j' `7 u- ]; D$ G
, f9 s( R/ ?( a$ J* B9 E/ jupdate-credibility-list# L$ h8 f7 E5 f9 n
& `9 @) F/ ]& P' @

7 d: M9 x: \, I8 }: {( X# c# mupdate-global-reputation-list
9 t/ s" R% \: H1 P2 p% ?( d/ S* ~

5 B3 {( I7 r+ Y. L6 ~5 xpoll-class

2 W3 X& }9 H* u% f/ F
1 S" K) H: k2 d, ]1 Uget-color
$ l6 ]2 l* G) S$ n' \. d% l
+ P$ l+ N5 l! B8 s
]]- r0 m7 c5 r: J# D; K! n3 g

# a+ F; ~3 ^* {;;
如果所得的信任度满足条件,则进行交易# S  i( a+ K# s8 X

, x( Y0 w& ?+ R( N7 H' E[

2 J: E1 c2 b/ i/ Q! k
, v# ~, u4 ^  trt random 360

" C* Z7 D' q2 R; S
8 h: D/ Q, |9 G1 n8 h; dfd 1

8 U$ K9 }3 Q& T9 T$ }! M- j6 p* _; f3 N  w/ X/ m* _
]

2 e% R0 D% P  w+ K* T' h
0 N" ^, Z8 V4 Uend

" L  K$ Y0 ~6 M" E! T. I9 T
3 s& E6 U, @, L! P+ `- rto do-trust ; d, y% \6 c' l0 N4 X
set trust-ok False
6 u7 _1 R0 P6 C! G+ ~: a8 q3 y4 f- t, L; I4 e3 ^4 e
8 M: [* b+ `% g- ]" u6 X% }
let max-trade-times 04 ?+ f& h( Q, c  M
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: I/ O& Y8 ?5 h  G  h# q" `
let max-trade-money 0
9 ]2 y, p2 v- H. K) aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 U/ s1 R0 x8 o& ^/ C+ W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 ]* F; o) \$ |0 D! s
" g# J* u+ ?& u3 ?! Q$ R

$ ]) s8 D: w& `, v% j9 \get-global-proportion
2 ^. q1 [, _$ H8 D1 `$ klet trust-value
0 T7 A1 n3 q9 z1 }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)

% H4 B) V0 W1 S' S5 |if(trust-value > trade-trust-value)5 I2 `  ]: b6 \* ]$ F, X
[set trust-ok true]3 L) l0 f, \7 K3 y0 {( C* _
end8 K' {' o+ W" g

% _- X5 r8 |! L2 C/ E$ vto get-global-proportion
1 n* V& R3 k- }+ kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 ~7 B5 {- Z+ Q% V
[set global-proportion 0]9 E4 R) q7 ~, i, ]/ U
[let i 0" U5 j& z% }/ t
let sum-money 0
. D- O0 z. n2 y7 K/ Wwhile[ i < people]
% |# ]8 p' g1 j[. `5 A$ Z8 J+ K2 h
if( length (item i
2 o4 d  ~$ M4 a  [: `2 _[trade-record-all] of customer) > 3 )
- M7 [6 F  S, Q' J* ^6 R1 x
[
; P( A& s8 R& u. N: }' h* ~set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 o; Z, E! o+ G
]& D- }6 g% U, E5 j
]% J$ S/ V8 f0 E, [9 r
let j 05 B" {6 Y6 }3 w+ _0 |5 a  q
let note 0: s0 {' x, N; R2 T2 z, [
while[ j < people]  y5 S! o/ h, ]% R$ J
[
  v4 B) L, T9 f- Dif( length (item i
; q4 K3 o/ u* m4 G9 V- d[trade-record-all] of customer) > 3 )

+ f7 R# ?6 w: {* E" T* t3 D[
- L4 ], m# I3 Q& [% O; M( j( wifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 D# x) p5 _' q# F( p. U" P3 B) U
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 G( j+ P6 _4 c. I% Q: K. @% ^[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
* K6 t8 ~/ }2 a( b0 q]
" i  H' }) n+ _; A* Y$ i]
5 L; D4 K( K& _! b$ Iset global-proportion note
) U9 h: j6 U6 r8 h]4 Y' |& ^6 X2 k* O2 v" Y
end
9 C3 |5 X8 {* r. }9 Y
' [) x# a$ K% m) ~2 B! Uto do-trade
8 t" q! z" M; v/ D/ q, Z7 x;;
这个过程实际上是给双方作出评价的过程
, \/ r6 {/ ?% m7 l/ dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( t+ b( D, y0 G8 Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: ?4 I7 a$ d$ ^6 Gset trade-record-current lput(timer) trade-record-current. C/ N' n0 Y- n: q! r( U! O
;;
评价时间
' [" G& _8 H% ?9 c# O# j  b4 Aask myself [  e* _) H, T. F0 C1 `7 p/ b8 v
update-local-reputation0 q7 |6 E9 c2 T2 }, q9 R$ v
set trade-record-current lput([local-reputation] of myself) trade-record-current( b6 P% h( ^8 ?( w$ x2 B9 ^3 W, z
]3 ^- K+ j$ W3 I& b) e+ W
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% z; Z. a" o* G$ }/ Q6 r1 @* @
;;
将此次交易的记录加入到trade-record-one
3 {4 _6 T- T  oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: G7 a6 ^, |, w. Ylet note (item 2 trade-record-current )7 L1 E1 e( J9 z( Z$ P& b( u5 ^
set trade-record-current
+ v. `2 ?1 }2 g" _(replace-item 2 trade-record-current (item 3 trade-record-current))

! W% `0 @7 K6 ]set trade-record-current& O& v: h4 ^/ M5 {- ~! @
(replace-item 3 trade-record-current note)
- T" M- ^+ q) K5 c& ~- i- X3 C2 o! e7 }
% i/ o7 z2 k" M/ T9 ~6 n/ m* r  O
ask customer [
+ B& z" V; w+ y$ M  Eupdate-local-reputation
: n7 R( G. }6 q: P- O) f  Aset trade-record-current; k8 d  Y- B$ [  H9 |! ~5 `
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 ], y) w* [# {3 \( d$ G]
" v' `6 O6 m# S) u) O0 ^5 g3 J
1 G0 z% _7 @  z( x$ r/ U9 ?
  e& z! Q: z2 x; U8 d# ~
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 j8 n- C! V( W+ k$ V7 j
# _& T% T3 A! l1 H4 G$ w2 ?
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 e. f! Z; C2 Y3 a;;
将此次交易的记录加入到customertrade-record-all2 k8 c# B5 ^! }. C+ c, n9 n
end
+ G$ a% b4 ^" x8 B. Y) m( V& y! ~8 {# E1 U9 E7 d6 O* I* n
to update-local-reputation3 v4 a+ Y/ R: f& X* G  ~, n
set [trade-record-one-len] of myself length [trade-record-one] of myself
3 M. N' T, [1 ?( l( S3 Q: r; Y1 M0 t& t: ~
" I7 z, u$ h7 B4 t; c9 \$ u
;;if [trade-record-one-len] of myself > 3
  a5 j+ h- ]6 b0 i; ?5 n
update-neighbor-total
( h+ t* q+ x- ?! C, z4 y# |;;
更新邻居节点的数目,在此进行" ^! p% ~: C$ F- S; v- t2 d% _* t
let i 3. F- j( c( J8 v4 O
let sum-time 05 S+ k( v& ?& r# c5 l$ e  [2 k8 l  ?1 V
while[i < [trade-record-one-len] of myself]
8 e% m) j9 ^/ J2 ^5 o( x, }[
6 g5 H1 M5 g* c- T; d4 Qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' e* j2 i7 U3 R. ?/ fset i
, E7 K: F# S5 E( u6 B, Z* Y- Y( i + 1)
' i3 r' ~5 {5 L$ ~) A* U6 M/ ^
]
( h0 h# A3 w2 Dlet j 3- c% k0 j9 G1 U7 U  {, Z! V
let sum-money 0* f: g4 S' D/ {6 h' b" t
while[j < [trade-record-one-len] of myself]  d; ~  k5 s  k1 G, ?( y) P
[
/ D, _7 S  e( i; Eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
2 K9 g$ A" M0 Bset j4 \& T, D6 _# d( t9 V9 \
( j + 1)
' i$ q7 q) J& Y4 _* V5 x  V
]* c8 X  O; ?% p2 J! S4 y
let k 37 f" O- G3 G! C( H3 Q/ p
let power 0: \. ?5 W! }4 f5 H% H
let local 0: b" M# o) x3 L3 Y  t
while [k <[trade-record-one-len] of myself]
' \6 ^7 L- N  T/ d) N[
4 d: B0 d* P6 Nset 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) # H0 R. L. c' n: {) B
set k (k + 1)# |; {- D$ X- P0 i# i
]
. |" a% a$ T1 G: `/ H# sset [local-reputation] of myself (local)% q0 S& D: P, o, N
end
0 b/ A8 I* D( U2 k- h5 z4 J$ x9 s+ c8 J2 M9 [
to update-neighbor-total5 J: G9 L0 v9 `. A! {3 ?, O
0 b. B/ z% P' k* T" s
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! ]# z% }5 M9 q& K0 e
' n% @/ {) j4 `
$ m, S* h9 i! U4 S& Z' c
end
! q: ?/ _( h+ L+ E) d2 H4 x, M* t1 y
  c, ]; G! S  h4 c# Uto update-credibility-ijl
# E1 R- M% L( _$ P/ s8 M0 o" H. G/ p% {6 l2 i4 k. |/ U
;;
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。
( G  U5 j: w5 F" Z7 f' F! n$ N$ D) m, Vlet l 0% V# o0 h' w% a" [
while[ l < people ]) n. N* D' S9 k" ~2 z( 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
1 N3 W0 b0 ^: I3 ?- l3 ][* U/ u2 q4 Q) o
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- o  P7 \! k* Iif (trade-record-one-j-l-len > 3), E2 {3 S% g: d& f9 o3 w/ H) P
[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( V9 `) k! ]" I7 z, u& F
let i 3) L& L; |4 O4 c" y4 G
let sum-time 0
8 G; S$ E" d$ A( d" j$ P" ^: twhile[i < trade-record-one-len]/ B, e) N" C6 g$ q; w% F& o
[
. t. d; J1 o5 G( D; T* M9 o- Rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 J% Q; P! i3 t' D  cset i' O; p. D* Y& v$ g8 ^' X
( i + 1)
1 K8 S/ C. A( _% R4 i( O
]$ f6 C1 k. D" b: x: Q# s8 V- u
let credibility-i-j-l 0
0 g7 @' Y& O0 Z8 e' ];;i
评价(jjl的评价)
8 }1 y3 G5 M  A9 m# qlet j 3
6 {  S* i7 m" c# b* X5 qlet k 4
9 }4 Y- l' d4 P" @. mwhile[j < trade-record-one-len]
6 m: u2 W" I9 D% ?, u) F[
0 G4 {5 E) z2 \( [( y5 n' H- g3 v! k8 iwhile [((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
+ f! Z% U. z; y) Z4 k7 i8 Iset 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)
9 n( c/ j) _! ~set j
6 z9 I( p% p3 W( j + 1)
0 _+ |" Y+ _5 g0 e$ n
]- z8 F5 M* a- r
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 ))
0 B- |; M' Q5 i6 x. j6 a9 g* {% G/ P9 `4 J- B  R; P( v6 g
  o& X7 ?. ]8 E% n8 B
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 N7 p- v5 N: g( y- m1 V  u/ D
;;
及时更新il的评价质量的评价
0 c0 h  K0 [6 b8 I% w. l6 Dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- h+ [2 n) B0 A* H& i( u8 \, }  c
set l (l + 1)
0 [+ E' Y8 G# n]; _, j* y( P+ A' p1 B% t9 h3 k
end: e1 Q" L6 N; m6 K8 a3 A  C; E0 R
' ?% K; [! K5 j2 F0 D* `
to update-credibility-list' b# D8 E6 l: ?: {# D/ X
let i 0, Y. L! Z# E) ~/ x( D2 E
while[i < people]
& ~9 K5 [# ?& `  t! T. O[0 s- J0 i! k' H2 C- B; w
let j 0
8 j! ?2 @" o( c4 G# p9 Elet note 0
. B+ Q' R8 W2 m5 u! m7 b2 elet k 0" S1 W  l- `6 b2 U3 R
;;
计作出过评价的邻居节点的数目: s/ T' t9 U. }6 x5 {$ `
while[j < people]
. _1 R7 c/ ^: }9 A7 I, `6 y) f[) H, o5 b4 |+ k5 w* y; J
if (item j( [credibility] of turtle (i + 1)) != -1)" F, l" W- }/ @! r3 M- H2 F
;;
判断是否给本turtle的评价质量做出过评价的节点
1 b1 N( Z& ]9 e8 Z& _0 T[set note (note + item j ([credibility]of turtle (i + 1)))+ X: Y6 s; K2 r) e" r3 {
;;*(exp (-(people - 2)))/(people - 2))]
0 _5 u! x' X* [2 O3 o8 M
set k (k + 1)0 n. N/ a8 Z* K, m' ^+ V7 D
]; _) m+ P" f8 x4 c; o& g% \
set j (j + 1)1 |- B  Z% a/ I3 {/ m
]$ N; N4 r2 z3 W7 t7 n! `1 n* k
set note (note *(exp (- (1 / k)))/ k)
) i! c4 J; e7 D+ G. x) O' {set credibility-list (replace-item i credibility-list note)
: `( B/ {  G+ |* v4 ~set i (i + 1)9 \' \' V2 [: f6 n+ g$ k4 i6 _
]
7 N4 F. V" Q) U! Y) B' J1 R, r0 Vend; c$ K! Y9 p# r; P/ M+ ?$ ~2 L8 E4 a
3 e5 x4 t: H' G) V
to update-global-reputation-list
0 M* ?* W* K( p% }let j 03 \5 O" M9 x: u, M  T
while[j < people]  \9 s/ L4 o2 w9 l/ m( C8 |
[4 s; o) H; I# {& k3 I' w# H6 a
let new 07 D6 g7 v4 C8 C
;;
暂存新的一个全局声誉1 C0 K7 n# h8 q/ b/ B- C
let i 0; c; c' K! k1 F  S+ T% t
let sum-money 0
% q% S* R; r% m$ m5 v9 v  q! w- B. ]9 @! \let credibility-money 0
7 Z- W2 K/ t' k3 `6 Y3 Z3 Bwhile [i < people]4 t# A, c7 a0 R( Y
[
; d4 c& w' b6 o% Hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  k0 u) @; |* f6 `( j5 Y9 k% |- Cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 r1 [' R2 n( o( x( _" J! J" r
set i (i + 1)4 f/ p7 N; T' |) y' v  S
]2 z4 x+ C2 s* N! m
let k 0
: X0 O5 y8 \2 X, v5 ~& Llet new1 0
! x  @* J0 X  v! q# w' a: mwhile [k < people], f5 X3 Y# h: j! [' z. X
[
4 _/ s5 y; o! {  }$ ~; H+ @; V7 Qset 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)7 \. t- V9 z5 Q& l+ D
set k (k + 1)6 m' _# e! T+ A; G& u
]: x$ l0 Z+ ~4 q( i
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 y: p$ a4 X+ R! l" g9 h3 |
set global-reputation-list (replace-item j global-reputation-list new)
# w" _2 N+ q- ?. jset j (j + 1)
% Q" o2 }! V; D$ z- w, Z0 J]2 F9 ?$ L7 i+ r; [1 p8 O2 U8 Q  V
end; S3 C) A5 v1 ?6 `
1 }( C( E0 K( p' b4 q( u9 |

- D! a' i& ]( z3 @" s: O. o% A, L5 K, I7 d
to get-color. p8 z3 u* r5 d/ j8 a6 U8 j  \: k' t

& W0 q% F! H% @set color blue
' ^3 _$ A, B7 _. ?0 w
end
0 j9 V( l# |4 Y. m6 i  o/ x4 p5 N" m4 x+ R; E* ?/ F
to poll-class
% Z* ], e) K  Pend
/ ?" X' ?4 V3 |, y+ N  o' R, D' ?2 |4 J5 Y
to setup-plot1, F8 G& G& N! r, {9 ~- l
  D, D  @: M- m
set-current-plot "Trends-of-Local-reputation"

5 h0 f0 h. @% I, R/ r( j! j( ^" Q3 n- E% V, h+ t6 I
set-plot-x-range 0 xmax
7 ~  d# P5 @) ?2 O# t1 p, T

0 @2 m6 C3 K5 `- a; `7 p! p9 V9 Jset-plot-y-range 0.0 ymax

. G" {2 W( D" `0 [+ Vend5 R+ V! [0 t! Y+ ?1 J% M% E
; [5 v% Y/ b, R
to setup-plot2. z  d0 H6 F. ~1 y

! p$ }. M4 @7 }% l; Wset-current-plot "Trends-of-global-reputation"

5 }6 f+ a' ]! p3 u, C  `' l: w- z0 Q, N7 l0 ^( X- {
set-plot-x-range 0 xmax
+ @3 S) D$ r5 A7 _- W7 A3 C' L

: h( k6 I8 k2 Cset-plot-y-range 0.0 ymax
/ b; B, R, G' \* B: p9 w# `
end
! B2 O: y! h1 s/ ?) M5 K" l% |7 c/ l: A. |* r" }& U, ~! \
to setup-plot3  @! f0 O) H5 E4 S. |1 A9 R
2 `/ {. K6 c* A" Y# t
set-current-plot "Trends-of-credibility"

8 r+ B; i4 K& B1 s, |3 y+ @
1 X. D$ X; p# |8 U# z5 t' l8 Zset-plot-x-range 0 xmax

; m$ u% ?+ }# |0 [3 J
& U8 ~* P! g  }* l5 [( kset-plot-y-range 0.0 ymax

. u4 F0 Q5 r( M2 l$ {end
7 g2 l7 \! U- L* U/ s8 ~' I4 z. t2 Y/ x. w! ^" ~: \
to do-plots
2 o4 {* f4 |3 R: K+ @* fset-current-plot "Trends-of-Local-reputation"! R6 I) \; P0 h" d2 ]/ N1 ?
set-current-plot-pen "Honest service"
* c. D; n1 x0 |- Nend
& v" z& ~6 ~) ?! O; ?& m" P$ {- m' n4 |( j, b( S
[ 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.1 Q& ?. I! l8 i
/ b1 z8 U6 q  c. J6 k! W0 D1 J, x4 }
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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