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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:+ O6 k2 y# k& ]: R
to do-business 7 R: O; e9 Z7 @4 B; }* u3 ?
rt random 360
: M& c+ p$ i0 E6 T- U fd 1- N! x3 R( W7 R" u
ifelse(other turtles-here != nobody)[
7 b9 h3 r! d% x. [. H   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.: U; ~5 `! w( x$ \* c' C. z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & W6 ], ~+ Z% M  _8 F# w: f- T$ `
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( p1 g! A, e6 Q& H   set [trade-record-one-len] of self length [trade-record-one] of self
$ @2 r9 C2 b' _9 I* G   set trade-record-current( list (timer) (random money-upper-limit))/ O/ E# O: E4 m2 A; J

. X9 ]! l5 X/ i$ Q  o, @问题的提示如下:1 s6 n; B' M3 ^) A
' F6 t+ [: o' t) s( L1 F
error while turtle 50 running OF in procedure DO-BUSINESS
: ?3 O7 A- P' s$ h; i# c9 l  called by procedure GO
; V+ Y% [* S7 b& a/ r& }% n: A( {OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 b$ v: e' Y/ k9 T6 A; M
(halted running of go)% W) H+ A' E+ H1 P
6 w7 \& J( b% j, y  s; z# e7 {% }
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~~9 B7 \9 c9 D; P1 p3 |$ {6 s
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
+ M5 v" f6 r  m3 E: S' |globals[
; U: _$ ]7 l% V' n  f) H1 Exmax/ C# E4 e" a7 G  H2 W
ymax& I' ^* V* ], C+ F) S
global-reputation-list( }: [1 _7 C1 L

7 \; Z* x! X; ~/ O/ V' U3 v;;
每一个turtle的全局声誉都存在此LIST
0 k( j! X9 i" B" D- l; E6 Icredibility-list7 \9 k7 Q" i4 {7 E) l" |3 m* ?
;;
每一个turtle的评价可信度4 t* G" C6 N9 a' c& }2 Q" ^5 x
honest-service
8 v  T# T2 y& w5 M! v( Punhonest-service8 W# s0 q8 @# K4 C& r
oscillation8 D6 A/ V9 K, m4 ^* a8 ^' a
rand-dynamic
5 j8 y9 K3 p& X* G; a]4 O. L4 o7 D7 I  F5 w' o/ C
, O5 y! i0 h4 \, L& j, A
turtles-own[: g$ M, |9 `6 {; N; t0 c" p3 ]  x
trade-record-all
8 h( L: {$ h- Q" R6 K;;a list of lists,
trade-record-one组成4 g2 f/ D- n1 Z# P- E
trade-record-one
" q! d7 \/ a8 H! p. Y. w;;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 b% r% ~& O: V  ]
4 ]; U, M: ~' w& G, o3 |;;[
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]]
# E4 O8 h- I$ ^# r2 c# \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]
6 N2 K# C4 ]# Z7 T* g0 z4 bcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list( J) `4 i1 }' I5 Y, Z
neighbor-total
+ @, ]/ \+ F% L, Z# h& g  [;;
记录该turtle的邻居节点的数目. a+ ]3 ^4 y1 Z$ _
trade-time! t/ w* |! b+ F: V) F
;;
当前发生交易的turtle的交易时间
0 @7 \8 I7 ~4 d/ l. ~appraise-give7 `  s. J( h3 U
;;
当前发生交易时给出的评价
9 x) z) D6 z+ kappraise-receive
2 P  p2 I4 f, V5 u5 |; q;;
当前发生交易时收到的评价, I; l$ h/ S4 F6 Q0 r# }( l# O
appraise-time2 x6 U  R( m: C2 g, d3 C
;;
当前发生交易时的评价时间
& _; \9 b, T9 u/ P: mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
- x. y7 n5 z0 W3 G5 m2 N  \trade-times-total  E- @# p( m; p5 M/ U+ c
;;
与当前turtle的交易总次数0 l3 ]+ O: X6 U2 D# d4 K
trade-money-total8 k0 b6 P% q* F/ j" z1 S
;;
与当前turtle的交易总金额3 Z& U+ Z& H7 o' H
local-reputation
. D6 Q' j. u8 ], r4 T( _3 q4 G) @global-reputation
0 T" H$ }0 X( j. F5 a* v! xcredibility; s% f6 n7 V) @4 C/ a+ f
;;
评价可信度,每次交易后都需要更新
# Z* {/ R2 @7 F3 Lcredibility-all: c8 {: N( O- p1 {- L! M$ f
;;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 V: ^( O+ o  f6 O* Q2 t8 U

3 c' {& k  S  c, z7 ?4 P;;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& O1 R' c& d- b4 L
credibility-one
) L# u# d- f, K" m/ D;;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( `4 p) \* W6 R  l
global-proportion
4 @2 K, K% s6 @; m8 ucustomer
8 R  Y  E7 L  J! z9 ^1 w2 Icustomer-no
  j: V% ~% I2 |/ Otrust-ok
3 D- D! v3 p* _; N0 ktrade-record-one-len;;trade-record-one的长度
! d1 L$ v0 a  Q9 `, A$ G7 u]
0 B$ c( E) U% O3 E2 N! z4 h/ |' v9 \" I: \
;;setup procedure1 P. D  C5 A9 s% X
" e; }7 T1 F3 C# R5 `
to setup$ M3 {; {( @% d; ?5 j' T0 P
7 v% V* d9 y1 j( |
ca

7 ]' m- W7 x# x3 D8 C
4 a& K) K+ r% `  y- S- @initialize-settings

. Y5 m, w& k/ N! s9 Q) s5 P2 p' F9 l( t( z3 ~4 Q: @9 F  N
crt people [setup-turtles]
+ Y7 i, [% v+ ~' N( `" C
5 {2 U, D6 r2 Z
reset-timer
& O: `8 ?! G' n2 V, r: m

4 C1 a+ w* E9 a3 b, n7 g. p- S. _poll-class

& t' S& K/ J3 ^6 p$ E; C3 X3 j/ I5 p9 |4 `" R
setup-plots

' Z" }2 G8 ]' q; z/ q& ~" w' u( {
+ J; u: ^! |( R$ x" @9 v' v, \do-plots

; a2 g) ^* y% {+ `end
, i1 u* Z) D  Q6 A, a& i, {; s) w+ }
to initialize-settings
; b, u& B; ~' @! r# f0 u
, ]+ E5 N* K, O1 xset global-reputation-list []
! R' \5 s$ b* P0 e

( G4 I, c  b8 V! ?# }1 Wset credibility-list n-values people [0.5]
) g2 K6 s6 T: x1 p4 k% X

! i- d5 O" {1 Uset honest-service 0
; o9 ^/ i  P$ H' \, J/ ~4 I) i  ]
1 S( P, _4 d! F5 ~  p  ?
set unhonest-service 0

) g2 L4 `" V& l( ~" C" W3 ~& y# \* Y  ~; u! H0 ~9 Q
set oscillation 0

0 q& z! p; c' {- D# X3 x" A) a- m5 r) ^& @" ?8 p( L/ {
set rand-dynamic 0

. [. x7 n" A0 T3 R: \end
1 u/ G6 v( u, S, H6 i: [& p* x9 N$ h, K7 h2 ^1 O4 R5 J1 f2 v
to setup-turtles
3 T7 v& {: ^0 g" n1 }set shape "person"
2 K" C8 ]: a1 }setxy random-xcor random-ycor
# n/ X- l( [: n' {2 B( E; Qset trade-record-one []* L) x/ n, H. j+ }# Q

" X1 h5 @$ ?* o! h4 ^set trade-record-all n-values people [(list (? + 1) 0 0)]
$ d% f3 o" B% [1 b
3 o+ b3 P8 N/ a( f$ C5 a1 U
set trade-record-current []
; v# s# Q4 A3 Lset credibility-receive []
) I, w% v7 ~2 E& Y. |  y2 gset local-reputation 0.5
7 R- c" i7 u& t" z' d, nset neighbor-total 0  Y/ ?) `2 m( U' G
set trade-times-total 0
! c5 N1 [4 j3 |% D/ G6 aset trade-money-total 0: G. @# W4 `0 W# V
set customer nobody& ^$ k1 T% c5 q2 ]$ m5 S  ~
set credibility-all n-values people [creat-credibility]+ ^2 n/ T  N" m9 x5 k
set credibility n-values people [-1]
9 C% D  `: F1 A% S; Z# d2 nget-color
' ?. A, ~( d" k4 S/ @4 H  E

( V" L6 p) k& O8 J5 Lend
% _3 u$ v% e1 y5 |+ {8 ^5 N. F& T. v! \
to-report creat-credibility* u. Y  B# a5 M
report n-values people [0.5]! w+ [1 D( X$ G/ }+ G, i, {
end  d2 h7 a% O& I
& w3 Z$ r: T7 F( J. }/ D# N' {
to setup-plots5 E1 x- H+ i: K8 i

% i5 O# n0 |, q* p- v( O3 [set xmax 30

) @( h; @* D/ e+ A9 k1 T8 t5 K) s/ C* i
set ymax 1.0

- K9 ~& @, T+ k# ^5 u+ b1 a$ H, p9 q1 f7 e
clear-all-plots

* `6 K4 C! ^" m: B/ T; E9 R6 S6 P4 }/ l4 l7 W; ?0 p
setup-plot1

4 ?/ p- q5 X, \* q6 A; X2 x3 [, E
+ I$ i+ g4 B! O6 csetup-plot2

3 V. D+ T- Q8 b4 q# }. M  \4 P+ s% s* c8 x2 B9 O2 A
setup-plot3

9 w$ r; n( A  h1 y- rend5 h0 I" [8 z! X* m1 Q2 ?
' B" y' K! v: D2 _& X
;;run time procedures
! m. r3 ]* X0 k0 o. s6 l6 a; k0 m' G2 F* F1 Q! q
to go0 s+ l7 y2 b+ `. c4 M
0 m# y# a) T' N/ C# N' z& n: b  n
ask turtles [do-business]

, O% \: r- i1 V& O5 d- ]4 @end: h" n' _0 A* L
" \" U  g" y% u( E3 h4 D% [, l; ?
to do-business $ f$ R/ K6 a0 ^+ P; L! z+ y6 ~
# t7 }* X; J9 k6 Y; n

4 @5 i# K. l" P4 M6 K- n- g# ~2 \9 }' urt random 360

6 @, n/ g3 k; |
& \, [& Z  |& ^; W7 Qfd 1

, F  O8 v5 H8 v- Y& ]; v4 }; ]4 V. r& X. ]# r5 u
ifelse(other turtles-here != nobody)[
6 k1 R1 J# S6 o
) Q5 V$ O! }" g$ H4 L9 o/ c
set customer one-of other turtles-here
5 [0 s9 c6 g+ u' v

- h; l! _2 U/ T' C+ e8 I. i;; set [customer] of customer myself

: F8 d3 k4 L+ w2 n, p6 s! `: o) k0 ?( O, v4 G
set [trade-record-one] of self item (([who] of customer) - 1)
& J( S' Q/ E% h/ T( I9 p+ |3 O& I' G) H[trade-record-all]of self
% v% H, V* M, [  g$ Q3 b6 i;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: F* k$ k8 A  H/ T) Q! |" o- B: k& P8 P
set [trade-record-one] of customer item (([who] of self) - 1): F  c" w. X$ }8 V% ~- ~
[trade-record-all]of customer

, y, y6 `9 s. o$ n
* }: t% ^. c. J3 w8 a$ A9 Fset [trade-record-one-len] of self length [trade-record-one] of self
1 }# b3 |, X; X/ _( F5 h7 R" S# _# b
7 V* [8 A) O# y+ F  v, `  V
set trade-record-current( list (timer) (random money-upper-limit))
4 @* x+ f* H0 N1 C" f* X( F

! u/ K6 Z3 `5 V: \1 [' u* sask self [do-trust]
" `1 o3 c6 {5 ]- c;;
先求ij的信任度7 r. O. M. B' e. v

+ i! v* V( }$ |) _% L2 ^" Yif ([trust-ok] of self)1 U/ a% Q* r+ o: a9 @
;;
根据ij的信任度来决定是否与j进行交易[& f: g9 z* M: u- O  O; O! k
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' N8 B9 b) y& g. G- A. Q4 e
9 w9 D, }) G/ J
[

8 G5 ~( w( v1 O/ q* ^/ j- ^! Q: a# x: Z! q: l) p# Q
do-trade

. a0 Z) y0 j  D5 L$ R
' Q  K; P8 Z) _+ p% wupdate-credibility-ijl

6 K6 J) A0 {, \9 \" Y4 w2 U$ D, n! ]* G
update-credibility-list
" D: L. {! k+ ?

$ Z: H* D9 ~5 E. \: r, L  L" z! b: `/ u6 o+ p- C
update-global-reputation-list

+ J( s; |$ D( i  j2 \
5 v! M# A6 e: N7 |poll-class

$ v( z1 v; P1 T# o5 `0 r: T
; J7 x( ~, s& s, ]) n8 sget-color
/ }9 n7 F/ Y' M+ a- c- q

( U; S( b  q6 b3 M' W]]: c' T8 D& _+ D+ a/ H8 }. b
/ {6 I+ ~7 b$ n
;;
如果所得的信任度满足条件,则进行交易6 q9 v+ Q  j& l6 G+ W) x
. A' J7 {, y1 |2 U1 c' f, @
[

  O' w0 S0 v/ t7 i$ k' E% O( a9 Y; Z& B6 F* p- t& u
rt random 360
3 w8 E# q9 S* ]0 _' o! J

5 V$ D' l& O( L8 }1 D8 J# }fd 1
$ L1 O4 m' y6 ]

3 t8 ^8 G. T% m- p% p$ ?]

0 O, ~: z, |* _$ N9 ?% b2 E1 O7 k) I! W, _) z/ F, e, n) m& ~* l2 ~0 ^& n& R
end

9 i' c! v+ O  d* A% H* G. _4 \+ [8 |& j2 y" t, b
to do-trust 8 S3 j% Z8 a$ c) a0 v4 M9 W6 U
set trust-ok False6 i2 Q6 H) n6 m* ~( b

: ]6 O9 ~: I  e7 ]

" l5 n, C' ]: C+ Y7 n: {let max-trade-times 0
+ h9 ^8 S# h3 A' x5 hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& N  Z9 n- b0 S# Q8 W: P2 Y/ H
let max-trade-money 0! s9 p' J2 m! ~# }
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& [0 o% s" U9 W! m7 ^" E; [
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& S# h2 I* A9 b; R# |, s# P" w; O: @# f% R( v2 n0 M

4 M; E* K( a/ @9 c0 Iget-global-proportion: e" F6 i' n, r7 @9 O1 o
let trust-value
' @: A/ F0 h3 J6 Z5 _9 h) Plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
9 A1 T% s9 t: }- G3 Z- j1 d
if(trust-value > trade-trust-value)
, H6 ~+ D& ?% E' X+ c2 w0 J[set trust-ok true]0 C  H* @* [9 i, V- W8 G& _! A) g+ u
end) l0 |& y; r' D- }! o+ G: H2 g

  H, q+ K# m3 m0 p; `to get-global-proportion
  {9 H$ C* U7 v5 @, V" z; t8 t* @ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 o, M0 H" G6 l* K) s& q, |[set global-proportion 0]  k; x1 l% b1 S8 \2 h) T
[let i 02 L  l  Z( F. r4 j
let sum-money 0
  h  D0 N) a: e/ V: I3 w6 _while[ i < people]! K1 V9 U/ ?. @) |$ i
[' t! E/ c$ S; q( L
if( length (item i
2 ?0 s4 K5 E- ^' s# P5 ^+ k[trade-record-all] of customer) > 3 )
' d) b* V$ ^0 Z2 L$ Z
[9 T( i6 N  u# F8 u
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)): A- l. Y7 z# h
]
* q* j  O% \! P0 J: B" N% ?! k) x]8 \, v! _4 [. Z* y
let j 08 H/ \7 S( R1 S8 c* Y
let note 0: F0 S: q4 T8 G# w
while[ j < people]& J  N8 q" n, z* q- o3 g
[4 X( a8 j$ L" \4 x; s
if( length (item i' y" T  G" W2 x7 \# x6 F" ?" O
[trade-record-all] of customer) > 3 )

& y, I& j% o+ ][; @6 t2 ]0 m' C; v+ ?; b
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% L( v! M5 y" D! c' D" R
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 S" q- ^) h. V
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ E, ?  e0 c$ ]% S8 p: v% ?) L& u' g]
0 }3 U! o* N, [5 V- o8 d9 S( h]
! v1 o( \8 N+ Eset global-proportion note) K& B3 q, b0 H* R# k
]3 P9 [3 [3 v7 C7 E* [$ R" B
end
2 [: M2 t7 U! ]1 {3 W: P
; \5 C: {, B% J) q9 G4 w' Oto do-trade
7 G  Y9 M6 ?5 p9 b;;
这个过程实际上是给双方作出评价的过程
0 D) Z0 b( d2 v. q$ C8 Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ |" Q' }( J# }& [4 |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 z* R) ^/ M% S! Sset trade-record-current lput(timer) trade-record-current, v; Q, E! ^% L. _  Z5 p9 {
;;
评价时间- E) V/ O5 l) X2 `! }1 M/ ?# T2 t
ask myself [+ ^6 p7 K6 p* \; m& g, ?# }2 F1 Q
update-local-reputation; Y$ B0 w1 u: M1 E# R6 w
set trade-record-current lput([local-reputation] of myself) trade-record-current, Y3 q/ T/ |' d/ l- A
]
5 N9 J/ J& t- y% J" E9 oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; Z) b/ j! h. J+ f* d;;
将此次交易的记录加入到trade-record-one
! f/ ~* F. ^  M6 b* ^4 I. {4 x$ G) Cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: s8 _1 B  ]8 m" r; Y* m* I* Tlet note (item 2 trade-record-current ): C# Y! j" e5 A9 H* j' G6 C' M
set trade-record-current
9 I0 ?! p! @- n$ m1 q' S(replace-item 2 trade-record-current (item 3 trade-record-current))

9 X2 B' y5 C( E/ o! o; G) _set trade-record-current; E0 q+ u# @0 @  f% \& |5 h% E
(replace-item 3 trade-record-current note)
* v' G$ ?: N1 |' D5 |/ b: i; @$ }1 t$ \; a) ^" j
1 s5 _* t7 s* K% |
ask customer [( q3 b3 {  d6 A
update-local-reputation
: G2 y2 p$ i0 @+ w  P" n, Oset trade-record-current  e: y) s4 _6 f: Q# E
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ _' L: W' r. \; O" k
]
: |: c/ \3 X9 o0 ~
$ ?2 w( V" \% u0 ?/ g" _
, m1 ]0 o3 {5 Q- \8 P  w" u
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 r; M) A7 X2 J' T0 A, i
0 X# T$ K# `7 i& K5 t" O
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ U5 ]+ R& }7 x# k. y4 Q7 r
;;
将此次交易的记录加入到customertrade-record-all: O8 M' g  h2 t
end6 S) P* V, d; K$ ~

% i. |9 C7 ?+ h! m1 i% Ito update-local-reputation
! a7 T  y9 q: p" {  tset [trade-record-one-len] of myself length [trade-record-one] of myself% E, F3 f! R' P7 P! a4 D
, E" ?8 ?1 B0 V  j, H1 F9 d
  G; i5 H1 k  K- B
;;if [trade-record-one-len] of myself > 3

- b# H3 J! W6 m% w9 lupdate-neighbor-total! ^# A6 w0 h* R9 ~* D
;;
更新邻居节点的数目,在此进行( S- Z( P7 T1 Z5 Y: Z' u% {9 U
let i 3* R1 p9 I' `  @7 s
let sum-time 06 V( J7 i% P0 d5 A( M6 E9 K
while[i < [trade-record-one-len] of myself]! k- n, c; T: b, u" i, ~7 i: m
[1 [, a' H' w; ?4 Q# p, M
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" P" B9 h6 x% P) h  @3 Cset i7 v- x/ t; t0 D( P- w8 e
( i + 1)

3 y6 b& I; v& l+ ]]9 W% {- I: K/ G: U
let j 39 c+ w" s9 j  i# W2 ~
let sum-money 0. P0 j6 [% o6 [6 x/ j
while[j < [trade-record-one-len] of myself]
; W0 b! w. f, f# o& U[
; m1 G/ ~: L$ k; K# `4 r2 j8 Lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
1 e' U! f/ T+ M2 _7 C! ?set j
+ g& A$ M6 |" v! y, j8 v0 X( n( j + 1)
+ X4 D( Y8 y6 c) @2 [5 g
]
+ T6 F% q+ l. ~5 z% h# Tlet k 3
3 r6 f$ J: k) y1 ^let power 00 ^9 }; I/ K- k& u6 x
let local 0
( |- m: ?- {7 Fwhile [k <[trade-record-one-len] of myself]* [. a3 C+ x* G; S
[1 h% v7 F7 a  I! ~
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)
0 Z. h9 W5 s5 e6 B( sset k (k + 1)* f$ q1 ]& U4 y5 E# i
]" q+ v3 \3 B& q4 P: V* x; o/ R) ~4 ?) H
set [local-reputation] of myself (local)0 O9 r6 O' n6 ?* r! O9 Y# G2 ]
end
# W' o8 V, S$ t5 F
4 ]4 N$ ~1 }9 U9 u& Rto update-neighbor-total( |  e7 p9 Q! \" |$ h
  x# }' w5 M* ^! P% `2 q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 `, j: Z- }: \( C
! R: `' Y+ k7 ]

  X5 H# N, M! Lend
8 N8 F7 G  v/ F5 _- y) }9 I, _' a* k2 `9 I
to update-credibility-ijl 4 g' s" `/ {; O. A% j9 i& X
! Y# e* P0 f. R
;;
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。
! B* F  B' T9 I" T- B2 v" rlet l 0
8 z1 z. E$ X8 t* s1 R  U4 Kwhile[ l < people ]
* z+ }  ], F6 ~  A" Y, ]* ~& l;;
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2 {) V2 b" C8 J3 [+ U( v
[
3 f7 C# y% w6 h$ O% olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 m& \( H1 j  n& ~& l- D( a3 U1 Kif (trade-record-one-j-l-len > 3), }3 b. P( J/ t4 E; z& d
[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% C4 F: S# Q8 W- O
let i 3
4 F, L, S: G, t. n) g+ Hlet sum-time 0
1 ?5 q) t) t7 v1 T; S, Vwhile[i < trade-record-one-len]$ c7 v% {( c, d# Q
[
4 X0 V, n/ F5 l* U: B& eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 d; S& z  \: o6 E5 b5 l+ Rset i
( _2 i: D+ _' z+ S: d( i + 1)
$ K. b: c+ m$ U: x$ r$ N' F
]
# d+ l9 W1 C4 @let credibility-i-j-l 03 w6 B6 W6 `' u2 x- o! {9 ?
;;i
评价(jjl的评价)2 E* F3 m" K+ m! {4 ^
let j 3
5 R% \0 N+ P: jlet k 4
9 a  \0 ^/ @& N1 Ewhile[j < trade-record-one-len]
9 E) c! j$ _1 h, Y/ n. g# }* G[  K. B& X; g: l
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8 R1 ^6 W5 U. f8 [* V
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)
4 E6 ~# Z: o1 P/ [7 oset j: r) B& K7 F9 T8 F- D
( j + 1)

$ W/ j) s3 n- I! `; B9 m]
! t( x# x  H: c* cset [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 ))
* l( k, _6 A1 d- V% O" E
! g# y: n: q- h5 D* s- v

0 U* s2 \' _  @  F% Y. o  Alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) _; H1 ~% \/ M$ i" i;;
及时更新il的评价质量的评价
! p) x& C; u! Q! i: Tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ @; q5 i- X7 c0 N: m+ y5 v1 zset l (l + 1)
4 Y: k9 [( ^1 a, h]5 O- s4 l/ ^- W
end
* H; g9 D3 U; Y% e. \% P8 O2 k
9 A; K% t4 @6 k/ Bto update-credibility-list
- D: `9 p9 M4 O4 d: r) r1 Elet i 06 A6 X7 B& b! w3 C+ V
while[i < people]2 n# B2 _. g& x8 A8 a1 f
[9 }) _4 K7 l" c* {5 S9 g& P
let j 08 b& ]" p/ u$ g9 b
let note 0
( z; `* G$ |8 T! |let k 0
0 D* y6 T+ B7 M; V- b) o, p;;
计作出过评价的邻居节点的数目2 L0 z0 F# J. d+ E( c  R5 @) R" ?
while[j < people]% v, m/ g2 U  R7 w4 x% u6 w
[8 W$ V4 B$ E; L+ W/ `& i" x" d
if (item j( [credibility] of turtle (i + 1)) != -1)/ ~: O% P# M) Z- J; H7 X( \6 p
;;
判断是否给本turtle的评价质量做出过评价的节点
% o9 H3 e0 o* A[set note (note + item j ([credibility]of turtle (i + 1))), ?7 Z% z. |3 F; @$ u! r3 l
;;*(exp (-(people - 2)))/(people - 2))]
8 V, [$ q; J* @. z" C3 b
set k (k + 1)
- y" }/ {1 }# D6 `# _: j]- l. |+ K0 R9 g! t$ @/ _5 a
set j (j + 1)
: ^9 M+ ?1 S; |; p]( o- x4 P& w) I, F) [! I+ y
set note (note *(exp (- (1 / k)))/ k)
3 }) z+ Y6 y$ Y3 vset credibility-list (replace-item i credibility-list note); a& A$ ~; c+ Z2 h4 [
set i (i + 1)9 K1 W) q* Y' B; Y0 k
]
. C# o2 }! @; \) ?end& y# u$ ^, \8 P+ {5 h
+ v& l! A: @& R+ f6 N
to update-global-reputation-list
* ~/ p8 r( S' @, b1 L- slet j 09 I) [! a6 @$ o" `$ x8 |- a, l
while[j < people]
7 [% M; |* e8 W) H[
& o, @( V% R8 B* plet new 0
; _" a. \$ h5 E+ |;;
暂存新的一个全局声誉
) h/ u5 L  E" k( X- ^& j/ plet i 0
0 Y$ v) F* [! dlet sum-money 0
# Q: m" k5 m5 Xlet credibility-money 0
: l8 Q/ u2 H) ]! q1 v, e. Dwhile [i < people]4 w- |$ m5 u* b9 H5 o
[
# ]6 `2 L# h4 H2 C  Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 F+ H/ _/ ]/ D6 W9 Zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" @* i& q* m/ l' x' r0 i
set i (i + 1)
3 U' [# \+ S; a; v$ X]$ c1 S" M2 z+ i
let k 0
5 W) r5 U& f+ F& h) O2 m  Rlet new1 0% ^) g0 S5 k. g7 X  j
while [k < people]# y' B3 @/ R1 R: H9 _: n4 o; \
[
5 P& ]% E! u* H5 m: mset 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)
* Z+ h8 D7 T, z- Y. Mset k (k + 1)
' C1 N0 C( {- A9 S]
2 s6 u9 l) j% X  s1 V( o8 B' Mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 \$ s" ^8 z4 a/ h9 N* u: j; C
set global-reputation-list (replace-item j global-reputation-list new)
$ h! N* @7 ?) Tset j (j + 1)# O( e& z. j, V' E1 [
]0 D$ _8 A5 R- |/ T& Q9 t
end
4 O2 M; [' [( \; X+ G% p5 a
2 u  S  y' P3 K! @" O
+ n- B5 B7 u: ?* P& i- Y
; K1 G2 A3 x, ]- G$ ^to get-color) M# q, A9 I' x4 r8 n: x0 v2 v5 {0 Z8 ^5 ?
' o$ `6 `/ w! V# j$ P9 X; ^; ~- S7 N
set color blue

5 I& ^" c. s4 f7 Jend- R) m8 X  T$ f  r- W
; _( T( V. N7 E! F
to poll-class
) S: \/ j( f% E) g/ J& pend
/ x  V% _, v: {8 S% h( @- I/ s5 @( P
to setup-plot1
, N6 @+ k) b' S+ A( M. T' J
* ?2 N- V& [9 i/ A! J3 q, ?( |: Jset-current-plot "Trends-of-Local-reputation"

: B  }. j$ y, q" f
6 }' P: w5 O3 |8 qset-plot-x-range 0 xmax

$ I5 e$ M2 I6 E! `$ }* f. h. x( I: J' z- x2 J3 Z/ b& N2 Y* C
set-plot-y-range 0.0 ymax

0 |) N. H/ s/ I: z. oend
. d8 V+ g5 K. m* w! [. G" V# P; }4 w0 t' h( V4 F; X
to setup-plot2' f, n8 ?9 T  T7 O
  n4 {' c- J2 X% T: w
set-current-plot "Trends-of-global-reputation"
3 e( q6 e1 z% [7 M
" ]) k$ |# i8 m; [2 s! N. ?
set-plot-x-range 0 xmax
& r. @3 G5 V; s: l) A3 ?
; {# q9 g- O4 z  i4 w
set-plot-y-range 0.0 ymax

% t6 V5 \; J4 T& _end
% P( C9 a6 \# w! x9 w1 [+ z
- b& O, H1 z1 R  Z* D4 s9 oto setup-plot3
  x2 b! G% t5 O6 r$ Z5 s) Y
6 W% e9 m, i& u4 |. H. X, @set-current-plot "Trends-of-credibility"
6 `% e$ ~6 P3 S9 w' F4 q

) C( T+ u1 J; C$ S. |  T% vset-plot-x-range 0 xmax

2 O- I4 d4 ^! j' X- S& U) q6 o* v" ?# S9 H7 F
set-plot-y-range 0.0 ymax

- i+ G: Z( A7 @1 n0 [& [: {/ R4 Nend
/ i$ k/ I! \1 E
* f2 T* `! ^- ]. R+ Z) ]5 {to do-plots
! Z5 a0 m2 S4 U( h% Sset-current-plot "Trends-of-Local-reputation"5 X" b' l8 k& _
set-current-plot-pen "Honest service"
9 p8 [# n7 @7 o3 w) Send
1 y6 y7 d+ [+ S8 ?, ~
/ w& f5 c: |! m" z2 `9 n[ 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.* C8 g: p( w: M; T6 F; ~

6 \( @/ _/ B7 n- j+ c# H6 C1 d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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