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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:1 V- y/ Z; g, @' o( C' H( P
to do-business
5 [! j4 P. ^/ I1 @ rt random 360' N, X$ I0 m2 e# y( d5 W. q
fd 1
' r5 X0 F) e6 W: o# `0 g) x ifelse(other turtles-here != nobody)[
! W! l7 T6 G9 A- C, J8 M2 b: _   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.# h6 s1 N4 c; B, I
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, a' o  S1 m$ O  J! f& |   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 a0 _8 A$ H% s- i
   set [trade-record-one-len] of self length [trade-record-one] of self. {2 K4 o; c1 ^7 J  l& D7 {' B4 J- U
   set trade-record-current( list (timer) (random money-upper-limit))( e' @- T; z/ l5 d0 B
# u/ z- Z- J- K8 k  s' R* u* K
问题的提示如下:) l9 Y- ?9 t+ {2 p1 V

& I+ A# n9 G9 S9 i! serror while turtle 50 running OF in procedure DO-BUSINESS
+ `% C: N! M! F7 v2 V- V  called by procedure GO
( J  ~7 F1 o% E2 LOF expected input to be a turtle agentset or turtle but got NOBODY instead.
" J) O  g" w) `# N4 s! m
(halted running of go)  ]; m1 Q- l6 I- r" _8 E4 R9 |
7 G" Z) G" m) q( q7 n& P  C
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~6 T2 Q( O, E8 |8 h9 P) p6 O
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
+ u' A) g+ ?/ rglobals[. ~/ W$ _# |8 V" `9 I. D- B
xmax$ J* F7 i0 ^" I5 n# L
ymax
3 n: e6 I8 D) n& T% xglobal-reputation-list7 f) M$ S/ S% p6 V& b
2 P9 ]# V4 d; ^" [
;;
每一个turtle的全局声誉都存在此LIST- F* ?+ h. V& e3 M2 _/ }$ i
credibility-list
  T* Z5 Q) P0 z) p3 F* a. ~;;
每一个turtle的评价可信度0 |) L( s5 x: q8 \% K; q9 T( l! [
honest-service9 _$ b' `4 v% K
unhonest-service+ h4 x6 z$ b! M; u  ~
oscillation
0 s% |5 |5 e- N' d( S% A$ Y6 Krand-dynamic8 A/ ^# y1 [: q6 X8 B0 P% |
]3 l1 X6 B7 }1 |6 T. A

2 T2 Y0 P) T! y6 G9 j6 uturtles-own[$ h2 G/ m% A7 z
trade-record-all
& j' b' p  a, L" b1 I9 v! Q;;a list of lists,
trade-record-one组成
* z" j6 j8 T* Jtrade-record-one$ \3 F0 E& B# b
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ z) ]# g0 L0 ~6 D$ |9 C# {

5 P& o4 O" p. M) e" O  h; l  |  a) r;;[
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]]& e, h+ f! e8 |
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]) @+ U3 F& s7 Q
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' u+ t4 X8 @7 @$ ?0 H8 w
neighbor-total
3 O7 P+ T7 a3 P& U. M( V. U;;
记录该turtle的邻居节点的数目1 {% `+ g6 q" ^4 j9 R( d0 I
trade-time
) T. D6 s. K0 Q9 X  N0 w% q* v/ h;;
当前发生交易的turtle的交易时间
. Y% o7 m) |$ ^/ t+ d# zappraise-give7 b' C; H6 `9 }! f
;;
当前发生交易时给出的评价: j+ E( N; n% n. l/ V
appraise-receive- M8 e6 a, w! X1 A
;;
当前发生交易时收到的评价" K3 i, M2 i6 V. t# @+ D
appraise-time
: j$ _# O5 e5 a0 F6 r4 @;;
当前发生交易时的评价时间" }% d# o2 {1 n3 ~+ R( N5 f
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 U" a2 s7 R, |4 C- Rtrade-times-total
$ s( i% @9 X- _* n! k$ ?;;
与当前turtle的交易总次数9 N5 j7 y: u1 S* @
trade-money-total, |1 W0 D- {! m$ ^' @
;;
与当前turtle的交易总金额
$ O8 q, N9 U/ x; M2 p; Hlocal-reputation6 \2 e# T' e- }! x& u: D: A1 @
global-reputation
/ p5 t& @# u# U# i/ mcredibility
1 k5 T3 K- z  X* K;;
评价可信度,每次交易后都需要更新7 `7 |) u4 o3 A7 F' G, |
credibility-all
( P- R8 O- S  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+ ~! |# p( t1 m3 R' {$ ^1 F

2 j6 n  n8 ~0 S) }0 g# B7 c;;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
( o6 A9 G8 j; W0 ~1 v) [: U1 @" jcredibility-one3 z4 E% G. e7 ~2 X! I# Q' f, R) S' b0 |
;;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people3 m. r4 O  ]. W( f. E2 e
global-proportion
' }" d6 ?/ ?6 M4 z) acustomer( @. [/ w# e2 _7 w  H+ b
customer-no
8 s& c8 Y+ O2 X9 gtrust-ok7 }6 V! Q$ Q2 r" R9 M
trade-record-one-len;;trade-record-one的长度8 |- i7 y) ~7 i; W
]
& h& }6 P& i9 Q" F1 m! Z; x* h5 J  p' V! _
;;setup procedure
* H* i; Y) `8 w" k3 ^% d) H7 C2 S8 h; ]- W) q. E* h0 x) P
to setup8 K! }4 U2 Z( Z. d' k9 p# i

- J0 b7 b5 t# B3 Nca
4 q' G! l- {! S

( d9 X9 i# g$ \* Kinitialize-settings

$ B  A9 [7 K: Z2 ]$ U6 n" s; R* ]% n6 C
crt people [setup-turtles]
/ ?" `9 @0 X/ z( ]

, z( v* T* E, g3 T9 L5 [3 Oreset-timer

+ z+ ~5 n+ E' M* m- t2 K9 x) u3 ]* r5 ?) _) I
poll-class

$ O/ \  {+ L  [# B
  |- [" i* }$ Csetup-plots
) |$ ?& p; ?% j' m
( b/ B  e% u8 z1 Z& R- ]2 u4 s
do-plots

* z: }2 T  u& s% [end$ F$ x/ n. w- M, N: y

& P) L4 o8 g) b4 u5 @: ^to initialize-settings2 n) F. W* @0 B7 R8 d
6 I& z& x" P3 y
set global-reputation-list []
) G2 Q. n0 q0 h% n' B* V

6 f4 E8 z  k) M2 g1 }) Nset credibility-list n-values people [0.5]
  P9 S' {( p# @; H& i( a
5 p, A3 J$ g' P
set honest-service 0

% ]& G: b  g+ r" L* E, h0 e2 a/ K1 \3 E/ P, C
set unhonest-service 0
. a- H* w* d. j2 z% F. f0 b; G0 [

8 g. d" S9 r  m! t5 h' ?, nset oscillation 0
2 r2 }- a; b" s0 ~( l! ]

  t" ?$ H+ @* P; f& yset rand-dynamic 0

0 d& b/ e$ w  E" N7 O8 g: U) Cend' i$ e: W7 V+ d: a; h2 x
$ g0 k" \  o3 f+ h0 k" ^
to setup-turtles
8 K& ]0 x' D7 V& `. j; nset shape "person"- }' W  a5 g3 {8 }% g6 Z; J
setxy random-xcor random-ycor- }5 C, [3 B0 c( M+ h- o3 g
set trade-record-one []  f) r0 S% x( O, |! H0 J# P

0 l$ Z4 I/ C5 J  K' G$ p) _set trade-record-all n-values people [(list (? + 1) 0 0)]
5 Y0 R7 ]' R& L( T# Q9 W- l$ l  s6 W
* {2 L$ B, D2 u% ?( S3 [  _
set trade-record-current []
$ {  ~4 J: t6 r- K/ S6 [set credibility-receive []
3 v5 r6 w$ X2 t& A5 ?& Jset local-reputation 0.5
" _+ q; E" \* Nset neighbor-total 0  |( Z) \* j; ?) X6 v1 R; k
set trade-times-total 01 w) J+ |7 t3 W# [/ Z* j) t6 _
set trade-money-total 04 N; `( {) Q) E4 ~
set customer nobody
+ q9 d4 t2 B4 }set credibility-all n-values people [creat-credibility]$ f  D3 n$ t9 V7 ]& y" [' p! N
set credibility n-values people [-1]
( P8 i0 n" p2 B" H3 \5 Gget-color
: G2 g. Z" f+ d0 b5 x9 g, ^0 x
$ {( ~" S/ w' E' r
end1 G/ L. u# b1 H) P& X9 ^9 S

( K7 m7 S. D' f1 qto-report creat-credibility
9 n- C6 C( k7 [+ S# R- z$ Breport n-values people [0.5]
1 @! F: V- q2 Pend5 D  C) b  T- [! i6 A; Y/ ~
' H% O/ W. U: E0 F& D
to setup-plots) T. [8 K9 {# p
2 [6 _. `' e. W
set xmax 30

. L6 m- ^2 v6 B" h1 Y$ x
0 O4 i3 d# U* b6 }+ Oset ymax 1.0
# _: I; C' [2 V; K+ `6 \! s6 P6 a
; S  B7 T7 }& {, U7 W! k3 m3 w  U- V
clear-all-plots

" t2 u; N- o; Z( `! o" g
# a* p; C% N+ }" l" h  ysetup-plot1
- D) w9 t* r# B# R- P1 Q

* I5 _" {. e' m9 Ssetup-plot2

) w" _* {! L$ [) J+ H1 q8 u' G" K1 d. ?$ `
setup-plot3

& f  M4 T8 ?' G3 Q3 I$ Jend
5 ?3 X9 p7 S/ q  y" L  Q7 N! _' ?1 v8 j* O
;;run time procedures" P9 @$ Y( N1 w

  v4 m7 @  @  Jto go, N7 R) v% i' u& t. s6 r
  n' f: N2 g+ h$ q0 g; j8 }" J7 J
ask turtles [do-business]

+ W. c# X$ X, ?8 f: D7 W+ e8 Aend
5 ]. k3 C3 D# g' R, d9 [# s; b$ K! l! q' m6 D% M. S8 V5 Z
to do-business
' a, w/ L- F% \) u3 ~, k
5 Q! l- Z7 |2 c: {
  e2 F% \, \2 h5 H5 Q
rt random 360

7 W$ X: B- ^% q* R$ s+ U
2 I9 r, }1 q. O& M- X8 o8 \+ mfd 1
. k7 m# @- M1 o3 x" ^3 w' A/ ]
5 x* v; [" g9 u. c- S) C
ifelse(other turtles-here != nobody)[
/ U, l9 i* ?$ t1 M
2 M( z+ Q2 ]+ d
set customer one-of other turtles-here

6 X+ \* j6 h" k% ]. _; ~! d2 |" v( E* @+ ^' B) _
;; set [customer] of customer myself

" B: z( B' x6 {9 j+ m" q! ^
3 Z* J3 I, E7 W8 t8 d% w4 aset [trade-record-one] of self item (([who] of customer) - 1)7 s6 y7 O: A: x/ [- K
[trade-record-all]of self6 Z9 X; j2 {0 I+ N
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 L1 S2 O) J$ P7 B4 m! n

0 q* d8 h  O8 I+ l" D2 Yset [trade-record-one] of customer item (([who] of self) - 1)
8 S5 b8 H- g- n3 h[trade-record-all]of customer

5 y7 a* U- @: p
) a: `5 x* }9 Q  \% Y4 {6 }set [trade-record-one-len] of self length [trade-record-one] of self

( ^+ H' ~/ ^: A, A6 p
+ \: k, w2 V- f9 l3 R& g+ Pset trade-record-current( list (timer) (random money-upper-limit))

+ T% S  o3 s$ |- n7 e& m8 K3 W' E! U. r. `* I( O; m
ask self [do-trust]
. n. e0 d& a( m+ o4 ]- b9 z6 G;;
先求ij的信任度+ _" i% y( d$ d3 Z& `  \

7 u3 N& ^$ u" F* l4 L$ A& U) S1 oif ([trust-ok] of self)
" a( d5 a3 |7 I+ i+ x;;
根据ij的信任度来决定是否与j进行交易[& h3 L/ P7 y& T& C' B! g
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ }- O2 d( E8 [! k" y& I1 P: V! D& C6 `
[
, A9 o" l' _' R! J$ Y! n& k
$ f! G% `+ _( t4 ~4 Z4 J
do-trade
5 s- G* ?! Q$ w) q
% x6 s, W. s4 a; l+ D
update-credibility-ijl

5 E0 d' c. J( v: e2 V7 U6 ]3 I) I, z# J
update-credibility-list
# ^; n( J3 K( [" o/ x0 N( J

0 c: N0 M" S. H9 y
- v2 Q6 h0 j( y) X3 ]* {update-global-reputation-list
( H- W" z6 o1 f2 x
3 X+ }; G. v0 p
poll-class
# o% \( k8 H' n

' ]0 Q6 {+ M2 i9 _% i8 W6 Bget-color
/ g1 w: Q# v$ _3 J& {; z( f" @
/ U' [; v/ m- Y, w! Y
]]
8 b5 K# n' l. ?1 ~7 K
- w% h* m  l$ }3 J1 a;;
如果所得的信任度满足条件,则进行交易
' V" J2 h9 }3 E, t
1 b- t) o, _: T; y0 D( n[

# T/ i7 G  p* `% G# g; m8 O4 h' n6 P$ ?: I+ f. }& O; e
rt random 360

* y& L/ u7 B$ x( Y: g* S( w( l# s1 n8 H7 N
fd 1
. f4 ]2 ~) r' A) s2 \2 ]) J7 k
4 m0 z; }" }9 l
]
( k4 j& _' i: A5 U) n
* p% Q, ^6 Z% H( k
end
& ]: ?8 |4 ]0 ]$ `! y

8 p" U, P% P# ?" x( p2 m$ ^* w  Wto do-trust & t( R# D: b. R$ n, S
set trust-ok False8 _) @  j9 ~1 V1 @  Q1 p
3 R& Y( r( r5 Q

* P( p4 K4 r. Plet max-trade-times 0, {) h; p7 K! u' g& d
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 z$ K  E' O6 M$ n0 D% ~
let max-trade-money 0
5 f: I* k' H0 ~7 f3 _) Pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 e; J  L0 a/ g5 ^let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, i0 Z' U5 r$ B1 Z6 i. s5 F7 M- _% o8 p+ y. U: }( p

& @$ g; b: v$ g# b2 Aget-global-proportion
( s1 i+ z4 A+ P. Jlet trust-value: c5 o" Q5 G. B8 p: J, t" o- T* r; e& v
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)
, x, d8 P: f0 ~3 t  h2 H# G# B
if(trust-value > trade-trust-value)
: }+ P# f5 D5 l) t[set trust-ok true]9 e& Q! F8 I" E* a: E6 Z
end6 v& Y' R5 J( q

6 V# c! F2 F' {' F5 _2 ^* K( ?to get-global-proportion
1 N* P' R; U3 q, L5 sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 t1 `9 s' ], F[set global-proportion 0]; t# U/ V" q) b2 s
[let i 0
- X, I( F5 K" M9 G# ^# V. Glet sum-money 0
  ]3 C& |! n/ L1 d0 `while[ i < people]
/ g6 o/ ~! ]- d' N[
+ t' O! H: c2 ^* P$ v  qif( length (item i& ]* m( @- Y( B$ e0 ~" ~$ h6 @2 X7 ]
[trade-record-all] of customer) > 3 )

& M" T. u# _) S5 z& B4 H( M[" I1 V4 ^' H, O
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! F- d  H( Y9 o8 O" a
]3 H/ u! P4 l& @, ?* V
]
. \7 E' G' ^# n: `* Clet j 0
( V1 J2 t' U& B1 k' U- W; Blet note 0
- j  T2 N' C2 @8 d+ B3 S; q# qwhile[ j < people]
6 x/ z; i4 ^6 m9 Z! u# ]  i- ]1 _[5 Z; ]' d" U. G( ?
if( length (item i
6 G# X9 d3 s8 {" G" ^6 j[trade-record-all] of customer) > 3 )

* ]4 x/ p5 b! j& W& p[! y: H6 Y: K! n' ~; W% g4 g
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 G3 G+ ]; {! T" h% n[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- K; V3 z. n# R/ U: g5 o0 F
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ L/ \) l! d% g]
' L8 g% h2 b. Z1 }) ?]- A1 O6 o0 C0 K9 [9 Q
set global-proportion note
3 s7 e) l: z0 Q- J" Z( S]: u! A* O4 I  z
end7 S% |& [$ ]! O1 x
# i. M# u4 M8 O
to do-trade/ Z8 M/ h8 e7 ~, R" ^
;;
这个过程实际上是给双方作出评价的过程) G: j% ^5 p" _
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! p! R6 I# L, S) b" b: ]0 r2 A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- ]" B; J- o0 y. Z5 i2 Tset trade-record-current lput(timer) trade-record-current% x# }5 `2 W' ^. Q7 T8 {
;;
评价时间& m& \6 r8 C9 D& W
ask myself [
4 ^/ O+ J. p8 J9 r! M" H+ ^, hupdate-local-reputation) c! G0 ]0 t  L3 [
set trade-record-current lput([local-reputation] of myself) trade-record-current. `8 I' T+ t3 m
]' A4 I+ P  |1 V0 i" S1 Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  f6 r/ g  o' W8 @1 b) e1 P
;;
将此次交易的记录加入到trade-record-one
0 L0 p& c7 W- V) B! ~2 Sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 M. w' h5 Z5 [6 f5 z2 j9 b1 D# Slet note (item 2 trade-record-current )
- o2 V3 w4 ~- M: _: Z( V5 v4 uset trade-record-current8 z; j. \$ T% b% `; Z
(replace-item 2 trade-record-current (item 3 trade-record-current))

; Y& ?! o- j" }9 g/ `1 Vset trade-record-current& J1 `: M' L6 d# e7 \& k
(replace-item 3 trade-record-current note)+ m$ ?/ Y! k+ y8 u& r% ?% c( ?9 j

# O5 t: [9 ]1 _, b- E6 ]2 p5 C+ y
7 L% a7 }) M4 U+ h# s
ask customer [
) s% A8 _9 p6 f/ @- G/ ^) cupdate-local-reputation
& t" P' {" b6 E% d  zset trade-record-current* G* [& R( J/ y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 u# ]' b3 f, k' x3 u# O
]
( S) ]7 C- d+ D2 O: b7 W9 h( `3 R3 M' }6 h4 `" f' @" r
: K2 X) v4 b5 a
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' i" z4 j" G8 k+ G) O  }% G

' }- T' Y, |4 D0 r( a) pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" l) D- ~* ?4 D;;
将此次交易的记录加入到customertrade-record-all
6 R; J$ ~8 |3 p/ ?0 o/ W3 O# xend
8 t9 V( ~* X* V7 `
, F& G2 A& S# i: ~- S* ^9 s$ [to update-local-reputation
0 [6 B8 t$ S" V- J/ Wset [trade-record-one-len] of myself length [trade-record-one] of myself
# Y4 Q4 G+ s; O; k1 C8 H  g1 b5 }; r6 u1 i: k3 U

6 @& a, c% X3 H: B, \( o% Q;;if [trade-record-one-len] of myself > 3
, o4 I3 I, H$ b0 N
update-neighbor-total
( R6 ^$ Q8 z( w5 c, S;;
更新邻居节点的数目,在此进行
: m- n8 [) m  g5 D1 \3 \% ylet i 3! F; V0 v$ H& j3 i- U+ r7 L
let sum-time 0
* i! I) Y; M& Iwhile[i < [trade-record-one-len] of myself]
7 |/ R, f# R' x1 m* L[
$ X# N9 ~% S7 B% H) f3 W$ R# y1 Xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 C+ k9 b( f/ qset i: I, [' \) f) o9 ^
( i + 1)
! R1 x. }0 V( v& d1 S# O
]6 O4 [- @9 N6 E( b* W' [
let j 30 u! e( K* D* H, F6 a$ \0 i
let sum-money 0
' A+ y/ n' |1 i: k. b2 @4 u) mwhile[j < [trade-record-one-len] of myself]7 p/ k; ]/ ]& i/ q* U' e
[
# K3 x8 d  y0 o2 f7 i3 U% Nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)  G, q9 J% k1 f8 i0 N
set j
8 r- }! u( ~, ?/ l7 S! t( j + 1)

9 G" K0 s( }+ f, `) w]3 d# h8 K6 W3 g+ [5 @4 a3 G$ ^
let k 3
: a5 R) F) J. k$ x$ olet power 0
6 N& z- I5 R" B) H$ Q6 N" ]let local 0
1 U+ T: `. a9 T! owhile [k <[trade-record-one-len] of myself]! y# s- i7 k. z) h; V) L3 n3 T
[5 Y+ X6 p2 S' [" c2 m/ U# i- F
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) % U) [1 R; B+ L" G' q: z
set k (k + 1)& t& {( g5 U3 w+ r: j0 \
]$ A  y% Q) c9 M+ A
set [local-reputation] of myself (local)
' p( `8 g3 g8 S3 U- K* j, Oend( o$ |6 V) z( _

7 v  F. O* P+ r  o% m6 J# @  rto update-neighbor-total
0 X' ~9 f6 a( O4 \( k! R  Z! g% A8 w4 Q' x/ Y2 s- O2 S
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 T: K- L% a0 X5 P4 q" W
+ ]! S3 Q/ L% }8 A) Y$ `3 E

0 g1 E6 U* R; l; E* m8 Lend0 Y( D: |" a4 f8 A
! A3 p* D4 T6 D3 b. A+ v
to update-credibility-ijl / j1 I; G9 r' {$ _1 t2 b
6 C; |+ g0 w4 p/ G8 T3 c
;;
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。- `0 A5 M5 S) |6 C( s1 n) U! @
let l 0* ]" e8 C# O* m
while[ l < people ]% A  X) ?8 P1 K$ v" c- 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; _( Z( ]/ W* a  h7 F% ]8 W
[
1 `& C( Y& E6 u+ u% o  F6 Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ G% w" A* c( u6 p6 \
if (trade-record-one-j-l-len > 3)
% f+ @# X4 i; 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( P' V3 v" D3 C/ ~
let i 39 e+ ~* k/ t9 p0 A! b6 q
let sum-time 0
, [# Z# z1 f6 d5 w9 M) \while[i < trade-record-one-len]
; }5 b9 Y5 |2 P3 `: f/ K[" h3 Z, d5 ~% a4 K% n- x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 A# [) s% F, v1 a; g
set i
) g% I& R2 c3 R5 ]( L( i + 1)

$ \. v2 }$ c7 h1 X! |]
- b7 @8 [4 v4 i. A+ u, ?let credibility-i-j-l 0
# l. Q* H% W5 b1 \& Q4 s;;i
评价(jjl的评价)
, E* W; n5 a/ j! ylet j 35 F! g/ o; ^. \- w! X8 v
let k 49 J' F9 S$ _( G- ?
while[j < trade-record-one-len]
7 d, Z  a0 v/ h# M[: j  m, \# E& U2 e3 z
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
3 g1 @; ^+ J$ r' x" u3 H0 vset 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)
8 K+ t6 S) i  Q5 H6 U$ |7 dset j, W& q2 P9 q/ U6 d# T( b. _
( j + 1)
; e  E% E. A6 l" b
]
7 u4 j1 `. [$ L: x! q+ vset [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 ))
) T0 v0 t2 Y4 E
  N5 H- F3 n3 y8 z4 K

  z) w' I* {# @$ N2 \, l$ P& ilet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), \4 B6 j2 u' D3 [1 t% F# c
;;
及时更新il的评价质量的评价
; u; @7 I1 g' @! W& _9 q9 T+ Zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! `1 ?' Z  D) X, L- N) N( p  \% G! X
set l (l + 1)4 ?: K7 h& l& c; z" g7 T# P$ I- |
]* F' a0 r: p, i. P' s
end
4 g7 @6 e/ x2 S# I3 c7 h8 M) O
+ y: d, Z8 |! j! i$ w' lto update-credibility-list
) o8 v3 P6 F5 ^7 Ilet i 01 z7 q2 t8 e3 F1 f6 V' ]3 x' n
while[i < people]1 u0 s. B5 S; K" \; @% H
[
2 X1 x3 ]1 K' h5 [- klet j 08 ~0 H0 y4 {- R3 C4 D+ F6 T0 n# j
let note 0( v+ V  E8 N( \6 n! n+ i4 {  ]
let k 0
# N7 w2 @# e& o# K3 I* U;;
计作出过评价的邻居节点的数目
4 x1 E: U9 U$ n( T- V0 Jwhile[j < people]- B+ ^2 Z' U5 X2 z' o5 V# S  b  {
[, S7 ~5 F/ F. L0 E6 B2 {6 S
if (item j( [credibility] of turtle (i + 1)) != -1)1 b3 q2 x' ~" {8 \& F( J! b% E
;;
判断是否给本turtle的评价质量做出过评价的节点% h7 ?/ F2 t+ B
[set note (note + item j ([credibility]of turtle (i + 1)))
( d3 `( E! H) O5 G0 i;;*(exp (-(people - 2)))/(people - 2))]
$ |! D) Z* B0 l, c
set k (k + 1)+ f% }+ e+ j# V1 ^. s* O
]$ J) O7 h3 p# o7 j+ z/ V  i  T( ^
set j (j + 1)+ p, o1 [* E$ S0 F" m, l
]
0 d+ l% l6 ?4 Y3 h+ }( _' kset note (note *(exp (- (1 / k)))/ k)
2 e4 W0 F* U: {set credibility-list (replace-item i credibility-list note)5 x2 n/ D; n, e' K2 y( C
set i (i + 1)( t- s8 Q; T& e; }, R
]
2 D! M0 ]& V) E0 T8 K$ mend3 ~& N+ o& t9 ^" M

7 {# y) R5 U7 E  c$ F" Nto update-global-reputation-list
6 o! k& X1 v' P% h( K: blet j 00 H9 P& _' o9 d/ p6 Z  i( H6 g
while[j < people]# l, _8 M9 G! V6 c  }4 o
[
, |! l0 f2 |* P( L, f  W) f+ J$ Q! Tlet new 0
6 s$ a) f" |( S" r; @;;
暂存新的一个全局声誉8 t6 C% @* X+ y, a8 v. Y
let i 0  o9 L$ ~" r8 o+ Y  u. \/ R
let sum-money 0
( m+ w) _6 v& h9 _5 E6 xlet credibility-money 0
& A! t, E+ A3 y  N2 c! S7 Y+ Jwhile [i < people]
4 m* k0 u! p5 j) g; ?; _% o/ G7 u[
  M' L1 r1 s+ x( s- Y8 t3 Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* M  n; Y+ q, E3 ~3 B3 Kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ a3 i7 n6 v! z2 E) }* _set i (i + 1)5 E, `+ H8 m7 |2 q; z
]! I" ?. j9 {5 n& J; e4 E
let k 0
* I9 b$ L" S5 D8 R0 Ilet new1 0! K" ?# c% U4 ~/ A4 w2 A  m- K' Y: R
while [k < people]4 J) O8 u) ^/ g0 s0 n  I
[
: l* W  Y2 W, D0 I& U) Nset 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 Q0 `; b/ \7 V, _
set k (k + 1)& T; k% v2 G. h  h) E
]6 Y1 y. l& o1 ^1 h7 i  S$ w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( Y% {9 u; _( g: M" N
set global-reputation-list (replace-item j global-reputation-list new); y# v2 w  I0 i# ]3 l
set j (j + 1)0 ~& |8 d) y8 Z+ O) v! @
]
6 k! q# a2 A/ {% O/ Oend
& J. B  w8 f( ~$ }' Y# Z. N% a& h; q

- C# H" l7 O( G& l; c: J! s+ J3 S4 L/ V! }% d4 }; G! i
to get-color
& J( Z6 x6 S% Z6 w4 W: `* t. Q, _& E7 ~
set color blue
0 S6 d: W# q, `  |; u0 V9 r1 y( |
end
; L: Y! E/ B) \+ Z  X( w. ]4 Z8 k3 C6 }" N2 v  k& K
to poll-class
+ i5 b' B8 K! u: p! ], x, aend
+ B& d2 S2 U1 Q2 G' `  I" o6 c  ~; g1 Y% g" D" a* A5 l
to setup-plot1
5 f: b6 K+ w4 O/ W; `5 [8 v, z/ ?$ f$ p
set-current-plot "Trends-of-Local-reputation"
! Z, R9 X; q) S3 l* e1 ~

; ]* _  H- h# Q; w! w5 Jset-plot-x-range 0 xmax
+ _7 ~6 }  d. O! J; K4 n. e  v
8 v) l1 t7 V- O2 v
set-plot-y-range 0.0 ymax

, I; {6 F2 {- \2 O7 G( I8 kend
; W+ ~, E. c/ k
1 R! Q4 M: N, V8 s/ r- cto setup-plot2
% P% c% h2 }4 }3 |
  `' o! g- \$ }, t4 I' L1 jset-current-plot "Trends-of-global-reputation"

+ U% m3 E! g# Q
) Q& R0 ?" X" j, Zset-plot-x-range 0 xmax

# W1 J" O. D2 }! V) }8 @& ~. h) g: X8 d) D7 m. m+ ?  x! l
set-plot-y-range 0.0 ymax
2 M6 {7 a4 |  u( {
end" p3 u% |' R( M# K
. n% Z% J2 z( A
to setup-plot3  h1 Y2 C% F, W7 m0 g/ Y  |5 U) Y8 Z
  e( |: q  E& T0 b8 e; M. R
set-current-plot "Trends-of-credibility"
  ~- F5 M% y  N6 E( p
( O. s0 J1 D2 ]' g, k4 S
set-plot-x-range 0 xmax

3 ?+ e# Z$ x, ^1 B0 \0 [" R# A1 m
set-plot-y-range 0.0 ymax
9 r, f! C2 C3 }: P
end/ p  B+ l5 _9 k0 Q
( q- {2 g. Z0 R/ K
to do-plots
5 O1 l) P. }$ [% w. {% Zset-current-plot "Trends-of-Local-reputation"
) i2 d5 a0 e1 ~0 Vset-current-plot-pen "Honest service"; Z( [. K0 g  _
end
! f( y( F5 P, V1 j- j6 F, E! L6 F+ q( O1 x' o4 @" B& b
[ 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.6 l+ x$ Y2 z; L- m; G
* d; w' I; Z6 S2 _
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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