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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:
& K" A- T$ p7 ?1 yto do-business
6 m' ]7 M/ Z6 { rt random 360
) D! ?: d& {3 D# f: l fd 1
; w$ \3 n4 r5 Y  W ifelse(other turtles-here != nobody)[
% r4 M% O* j" J. N; @9 P   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.5 Y2 x: Q/ @3 p  [
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 t% A: H$ f* F2 A
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 |" ]$ U3 e6 n' F$ d3 a
   set [trade-record-one-len] of self length [trade-record-one] of self
/ h! ^8 h2 U  g   set trade-record-current( list (timer) (random money-upper-limit))* L+ D6 y9 l* z0 X/ k
9 h. @& O: H0 w, z8 x/ Q
问题的提示如下:2 J( s( r% N2 p% X; Q7 Z

1 D+ Z2 M8 P$ s1 ^: Xerror while turtle 50 running OF in procedure DO-BUSINESS" ?9 ]+ Y$ N7 w6 [0 v6 A
  called by procedure GO- H& W. I6 u! H* _0 h$ J* \
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 Q( u* r$ g0 w, D
(halted running of go)
6 [6 @' r* m! d- y- e0 g; S: l9 s; x5 c# R, 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~~  }) i. Y) X( j. }- U  ?2 H
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/ L% }' b) u5 R4 g1 T
globals[
8 C. E: v' W& O- G) I0 ?xmax
0 Y! P7 v/ A5 o! c  H: x4 m7 Tymax
) _4 E9 l6 @% j$ t. |, M6 e+ [0 Cglobal-reputation-list
, p) T8 L- J5 K4 Y) @( M/ |) q$ M: \1 Y
;;
每一个turtle的全局声誉都存在此LIST) O3 i' g  }4 p& p
credibility-list
  v& i6 Y! d/ k! l8 Q& B3 R;;
每一个turtle的评价可信度% m. c% o. o9 L9 S% c( a
honest-service+ m. O3 W+ j7 K, @  J: x
unhonest-service
7 c: ~* V5 Z4 r0 @oscillation
: \' o3 ^+ Z+ V5 I! M$ erand-dynamic
$ D  r$ J" n9 w]# e6 F9 r5 V" k; C4 I( n0 ?
/ f4 V( `* s1 ]. q5 x# U
turtles-own[
% u: h6 p' X3 @/ X9 `% p0 Rtrade-record-all
. A8 d- m$ l  c" e+ M;;a list of lists,
trade-record-one组成! r4 w; W: R% p: v' I
trade-record-one) b, i( `- r. ]" ^* z3 S" q
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. n3 A  y0 k$ c, E  a- H% T6 Y+ |

5 j+ L4 d5 P/ x  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]]
; c7 Q+ b' L* ]% d4 K6 i9 x6 a. etrade-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]" p% z, ~# }! 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list2 B) }+ t: e# r7 R
neighbor-total
+ r' d  Y8 k; d$ e# d- b;;
记录该turtle的邻居节点的数目0 y) Q' R5 `' x% K
trade-time
# ]9 A/ |2 |, L5 c;;
当前发生交易的turtle的交易时间- ]2 V6 J9 S# O
appraise-give% C' G8 R3 o4 W: p
;;
当前发生交易时给出的评价
; ]) q6 n  A( U9 o% kappraise-receive0 ~( s9 {1 M+ i) X
;;
当前发生交易时收到的评价
* c% g" V/ I& a' C6 p1 S. ?+ Eappraise-time
- ?' q3 m% E) b+ k% k, ];;
当前发生交易时的评价时间
' V( q9 E6 A0 _" Ylocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ x+ {. h2 ?; r3 m+ @0 J. W; @7 ftrade-times-total8 B& h4 S7 s: J& P( `3 A
;;
与当前turtle的交易总次数4 M& i! ~9 K6 A1 D
trade-money-total
; T* o# M* m5 c! f) p! J* H;;
与当前turtle的交易总金额8 _$ J6 ?$ v8 b7 M; F7 P# I, z+ P
local-reputation
/ \( X1 a/ p- \( g$ Dglobal-reputation
, H5 Q) r7 R0 kcredibility
5 ]) Q# T6 L5 ~;;
评价可信度,每次交易后都需要更新6 C; a$ O; D, U/ J: y2 s2 o1 N9 `
credibility-all1 }( B! Q3 y3 K* R1 g
;;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* y$ f. d  K5 `/ q' a

' p3 l# ^# }, w! {: o% ~- \;;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
" C( Y, r5 n: I! o9 ecredibility-one6 H, ]6 X' y: J- X- B
;;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% f$ P, f$ w) ]) A) w
global-proportion) S: V5 H8 b% W8 r
customer
" v9 r+ a! Q' E, P$ r( Xcustomer-no) d( v3 @4 s+ |: e! O2 A
trust-ok2 z7 Z( X- v8 W( ?7 K* x
trade-record-one-len;;trade-record-one的长度
2 W" Y  ?2 H* M]
9 a! i7 e  Z4 \) R! w: M& T9 J! E% l( Q  W( T
;;setup procedure- S5 M9 M1 P! u- Z3 t, n- V
  b- h# c; P! r% r( J
to setup
6 G9 J* l, z7 N; R- {# A; G8 s- p+ a$ l6 Y2 C2 B, J" `$ Z
ca
8 |* ~4 Q. N5 B/ ~# Z% G2 v) s' `
# U" Q* y* a. _4 P1 k% s# \( j9 {
initialize-settings

6 g1 N% |- `% A; P! U2 U! Y9 e
7 o; d" u0 t& `# C/ ~crt people [setup-turtles]

9 U8 F" j' u; E# `. L# Y, W. p7 e5 s# k
reset-timer
2 x& x9 w# c6 P8 Z# Z' U: Z7 |

9 m9 z- z. e1 b3 V" R! Spoll-class

- B! s; \* ^) [' r! S2 K1 B" R' h, t. o5 j( s5 a
setup-plots

- B3 q3 j- s' c1 I2 e. I6 r% l  _$ P, l
do-plots

# @# N5 x4 ?0 `, x/ K) U7 send
0 S+ C+ F+ J" I  k, [
+ G/ j2 R* B6 n& Pto initialize-settings
& c! ?7 }2 x4 j7 m: i$ T
8 g( ]: ^* Q: v/ R* kset global-reputation-list []
: v8 Y( g3 t/ w9 V
# d2 w: k1 a! x: a, v, Z1 W$ `
set credibility-list n-values people [0.5]
' `. J3 }! ]5 l4 P; g" h

( _4 z- l0 n: h! M" tset honest-service 0

. q* Y( P. g$ E2 G& G
* C. K( Z- P1 W! y( i4 Fset unhonest-service 0
: s  t8 x: ~- E: W
8 V/ p" f9 ^, o# v$ L' }& N# e
set oscillation 0
, E3 T) B& b4 w7 g/ O
2 B) u( \. ]" W: ~3 Q$ L
set rand-dynamic 0

, H& M8 j9 M8 X6 H& Z- Z7 n$ dend( p9 q8 J) b3 D! d/ }+ n6 W

% o1 G! k6 j. mto setup-turtles . ^9 h2 i# I8 U1 L+ F. g  a
set shape "person"
; W) B2 b2 k. C; isetxy random-xcor random-ycor' m% Y* _  d+ o* e  s( U2 d- ]: n% ]
set trade-record-one []
  n: g& W; r" v. N$ o

4 x. d) ?4 x9 X* a8 I: |set trade-record-all n-values people [(list (? + 1) 0 0)] 7 H* [6 s9 H9 H! i; e8 s

4 r" O; m5 |- eset trade-record-current []; F$ W! I; C  z- P$ ?
set credibility-receive []
7 E- A4 y) M4 R' \. B0 C; E3 C+ Aset local-reputation 0.5% _9 ~7 c+ |3 N8 R4 b% H
set neighbor-total 03 B/ u8 A! z4 a; D2 p$ L; g& b
set trade-times-total 0; D) l/ w2 K* k. ^- i, h$ F
set trade-money-total 0
! X6 o/ [  @6 T( D0 Yset customer nobody0 r+ [) B: `" @0 w' H. }; g! j
set credibility-all n-values people [creat-credibility]
7 n' F; k$ B) U6 L. W- ]) Vset credibility n-values people [-1]" e/ E6 z1 C0 \& @- Z2 h0 w
get-color# ~: }( y7 m4 m1 [  L0 v
. ~6 |5 d# F+ R% G5 x, l  `! E* R
end. C! T2 t4 ^. n$ q. v

5 f$ Z$ `- z3 z  K8 r; D. tto-report creat-credibility. i) h) _# M' A: R( U1 \
report n-values people [0.5]1 d9 G1 P4 [. x9 E0 q( m
end
" u& g9 S' M2 h' c8 b& x
8 q2 E0 d5 ^$ k9 M0 E3 H( x" Gto setup-plots
( G+ I5 C5 G& M/ z1 X; R( \8 g% d1 J+ z& W' i
set xmax 30

6 o, |: \$ o- I: D6 K
7 }2 N* O/ |- r, \: s1 \& ?6 b9 _set ymax 1.0
+ ~) o. N, P3 e5 H- k

1 g  q- j* f- Y- z0 Oclear-all-plots
2 d7 {! b4 J5 ?% O' {
" e" ^, K! |4 l2 _, t1 M
setup-plot1

) Z" f$ S; t8 d$ g# R1 l# s& T1 ?; O8 r
setup-plot2

; r; v& n* C# ?7 b. m( k: o% t; Y2 y! |2 D( W; o! b8 ~* Z
setup-plot3
9 L( w- e3 `$ \; L" b" }+ m
end& q0 j, x5 }, z

( H1 _5 U0 z! [! x! Q% l;;run time procedures0 f/ w2 V; e9 e* z6 @4 ], \6 [
9 n7 a) G& _  x$ c  A) c
to go
# h: \* Q) i$ V
4 z$ ?; Y7 O, X& ]ask turtles [do-business]

! `) u: d4 F8 d5 e' e  m# h7 vend
1 C( k$ `% J7 w8 y& I" z$ z& l  \: W, n7 Z' t' U! M- Y( R% _# m
to do-business
& ?6 z: ~& r) U6 w  {7 V
) i' a5 S9 |% s: t5 x1 x" Z: a
1 Z4 Z% v! v- g
rt random 360

7 T  P( {" M  D" z, p; |8 s5 ?" A
# u2 k  j" ^; Y* U1 afd 1

$ @3 q1 Y. L7 n/ U! W% {1 R/ Y& `) q. A4 M& _7 K$ w2 j) w3 e
ifelse(other turtles-here != nobody)[
0 }" Y8 [" Q# w4 I. N! ]3 B/ M+ o, y

2 f' Z& ?0 m0 wset customer one-of other turtles-here
4 x' y5 B4 ~9 k& e- T
5 y; V5 J" }' {6 n- c
;; set [customer] of customer myself
. U$ X- S+ X3 {4 P2 X

" O% a" q) e$ U+ @set [trade-record-one] of self item (([who] of customer) - 1)* {2 u& j6 e) H- Y5 I& {
[trade-record-all]of self
5 c" O% D) T3 q9 q1 K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, W* U  ]' |+ {, l; O; Z
* g+ v4 C& J7 e2 |) ]set [trade-record-one] of customer item (([who] of self) - 1)3 {& M9 Q2 M; D* I/ F
[trade-record-all]of customer

1 j, B% M* C5 G4 [! k0 g7 V: _, a5 ]$ y; [6 K7 h2 O: T7 {4 u) J9 A  ]
set [trade-record-one-len] of self length [trade-record-one] of self

* M" h6 ^' ^8 L* Y" q
. T$ A- O* A1 I. b# b2 O( U' ?) w8 Wset trade-record-current( list (timer) (random money-upper-limit))

  G% S6 \6 O* T: e8 v+ B' A  l$ V4 S+ ]' t$ y7 Y4 L, `
ask self [do-trust]* R2 v% G  X; C* H# x$ m
;;
先求ij的信任度
; ?! o8 Z' i6 m* f% }, {( x; @  S9 A2 H# ]  H6 X  m- e
if ([trust-ok] of self); h" g$ c+ @; u: m5 g; y
;;
根据ij的信任度来决定是否与j进行交易[
: Z6 O- I) p5 J# M3 P6 O. |9 Aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  H) u5 @. o3 G. S

) ^# b0 v8 h4 ]: W/ h4 v[

  x# G1 E" k/ i5 o& |
$ F' y" m6 M+ v: a9 X# b# cdo-trade

+ _2 D9 C9 N3 i  G+ d/ ~5 L4 ~; ?6 @+ z- X- F) b/ {( M! l5 U) f& r
update-credibility-ijl
9 A: Y9 i* l( s: k
  Q& ]% e9 M, M$ N
update-credibility-list
. ~, V7 L9 c! ]. L8 C4 v  x2 t

7 y& l3 \6 o# }! Z" ?
, |7 h* ]4 z- g6 d/ b. rupdate-global-reputation-list

3 \# o- \4 W) \/ i4 ]+ @/ }: y
3 a5 M" x1 M+ A  tpoll-class

- s: g9 p) }0 R2 [# }  ^, ^' R% d; q, P  C1 ^9 k
get-color

0 F& y# O' L# ]' Y- d( D  B2 c" F! L8 B4 Q# M$ T9 _& k% l
]]
5 t! D: z. }3 u- }! G* G8 h' f( A5 n+ @
;;
如果所得的信任度满足条件,则进行交易- ?( Q0 a# s3 k# q& k, f

' f" g) L+ S1 B4 A  r[
2 g' ?- `5 a, S. ]

4 A9 r: S. o2 b- Trt random 360

! J. c8 d% r% ]- \+ j# W: d$ T" H( f- @' c
fd 1

3 h5 k& u" f" r! u* J0 W4 i
8 C! _& z* @6 q]
3 r" ]& K2 j9 T2 V2 G! k3 H
( }% v5 L3 p* V1 o
end
; W. K7 M4 r5 ^7 Y4 z

$ u+ a( T/ W/ |' Bto do-trust 5 D! m" Y0 ?& M# u/ L9 p
set trust-ok False- i# \0 Q( ^1 |! E* l

! x& h* X& J( b' Z4 ?

/ m  N5 k& F$ ?1 o5 z3 qlet max-trade-times 0) Q% ^, p' N+ R8 Y, F4 j8 V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 e3 }* M# s1 t+ r, r
let max-trade-money 0! G, W6 c: W/ L" s- X/ k, a6 c
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 I* \4 H; K( d
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 B' L: e2 @. v( H  T& j
4 X/ J# k$ ?0 q8 p9 @) ^
7 j7 @0 x# a% L2 }5 w) y1 `
get-global-proportion
  ^; c7 h. u! H$ A+ t- `let trust-value! u' F" z7 O3 `5 e! d; W7 g7 b  a
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)

7 J1 Y9 L7 K2 {$ }: u' G/ zif(trust-value > trade-trust-value)5 f6 _/ x6 V( s5 V) p0 ~8 ^
[set trust-ok true]
$ O6 y, ?: v1 Z, V& P( zend
  T2 w# z1 O; E( w3 C  s4 S7 ]% z! H1 w
to get-global-proportion
% G' c- [1 p! Z3 zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 l5 o3 \. N; I  o+ Z, L' e4 d
[set global-proportion 0]0 ]3 K" c. u. |1 r' _: H
[let i 05 J6 @+ G" X2 {4 v/ r, U9 [% y
let sum-money 0: d4 ~. `3 P+ O0 l
while[ i < people]# Y8 U+ q/ o+ ~2 R" H! o, M
[
  H2 F, S/ T/ h2 aif( length (item i
/ X: U! N% K2 B2 z! b" n: c0 U[trade-record-all] of customer) > 3 )
6 Q! e, w4 K4 c7 n8 b) J
[
5 o, C0 i% Y, R+ F. U- tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))- l% Y0 o! o1 _) I9 O
]
/ Q% U% M) i0 D4 s* ]! W]; x+ v* V7 o2 s& l$ \6 E
let j 0
7 R5 B8 D& U" {, X0 W+ p, ^$ N9 Zlet note 0
+ i3 {8 R5 d3 G/ O" E; ]while[ j < people]9 G: m( _8 w1 ?1 q
[
0 p. H  p* N8 J' p. Mif( length (item i3 [4 X& x# _1 }; ~
[trade-record-all] of customer) > 3 )
7 ?* y# P) d0 `1 ?# C
[  \8 d) B9 i& M; T) E5 v, n& c
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ J0 g$ A% D" Z* V" F
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  f3 C1 q; \2 y( D+ h) }1 t! K
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  M/ _' Z3 Q2 \& j
]
& @2 j) e" o" G5 D]
3 k6 a7 C/ C4 U3 [# u5 Nset global-proportion note
+ O4 f7 j3 ]- w3 f! X  \5 k/ []
  I! ^: T6 K- [/ fend
1 i7 Z3 K: v- n. J/ N6 i- \
$ z# ^3 _$ F" v9 d7 a5 R! k4 sto do-trade  [4 o% M0 h) H# p
;;
这个过程实际上是给双方作出评价的过程
0 J0 n$ K4 B4 lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. L2 S( B9 q$ v8 @. e+ mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 ~6 o5 D" ~" @. O/ w0 i5 @
set trade-record-current lput(timer) trade-record-current
5 h9 [0 p( U. |3 K;;
评价时间
  @0 T- s5 }/ K2 O" \* W# n4 l; d. Hask myself [
% f/ y: X2 ]" j* F: \& l9 T7 Pupdate-local-reputation1 Y8 V: K/ S' P# _
set trade-record-current lput([local-reputation] of myself) trade-record-current3 }, j0 Z8 t' @
]) k, R( s6 |2 G1 n$ ?3 r5 Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 l! |6 F6 \% `
;;
将此次交易的记录加入到trade-record-one0 T6 u" z2 f% O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 S2 A* P& M2 h' B2 Elet note (item 2 trade-record-current )6 l: B" z, I/ T' f+ I# V* q7 L
set trade-record-current
% n$ ?: i" J/ N& F2 ^7 H: y(replace-item 2 trade-record-current (item 3 trade-record-current))
" P7 T! f7 P4 E+ r) W
set trade-record-current$ n  z; `5 i$ c( p, U/ [3 e5 i
(replace-item 3 trade-record-current note)
5 ~" {1 `; X3 M+ `( k/ z" b  @4 B- L( ?& I
2 l/ T7 M- v% J( O
ask customer [
- Z* M+ h" T- M7 w4 }4 wupdate-local-reputation1 A. F& C( A5 D# ^& R8 C
set trade-record-current
, ?* g% n& p4 U, N; ?2 r(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( f0 T" P1 D4 ~- A]
7 s) f/ c7 C( Q% v
1 R2 i+ ~! L" R
, d4 Y6 O  r- o" z; B9 {# a+ Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 @: Q% ]+ Q, x5 p' N) b5 Y& R
$ l2 }' I0 r) b
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  f( p4 i# X' a2 R;;
将此次交易的记录加入到customertrade-record-all( Z2 C! L# D( S5 x/ W# ?6 |! d
end3 O3 Z; d3 j8 K# k9 n+ Q
7 v  e+ y! _5 [" a+ q
to update-local-reputation
) n8 j, s; O, U. j9 u& Y! Eset [trade-record-one-len] of myself length [trade-record-one] of myself1 p1 u$ {, a) i& ]% [, c; c: D
  t6 ~$ {9 w2 t: p' M
9 A/ w6 a2 z3 q# N
;;if [trade-record-one-len] of myself > 3

* |2 h( x- U# f  Kupdate-neighbor-total9 C: B1 n9 T7 W. U/ X
;;
更新邻居节点的数目,在此进行) y1 C$ Z) u! G1 ~3 B9 s% ^. l
let i 3; I& m6 J8 V( Y; u7 c+ J, n
let sum-time 0% M6 d$ O8 Y/ A
while[i < [trade-record-one-len] of myself]
& f/ z/ |: }; b[
, e2 v" f0 _0 O/ gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ B; |! ^( M# D& o
set i7 G% M% F7 c( g6 J) o
( i + 1)

" `0 k, r( N9 k+ }0 t! c& w4 c' i]' C' N& w' m; O8 }
let j 3
8 W6 K$ b" S, I% h' blet sum-money 0
4 Y- e& d" K' U+ M# P# x( awhile[j < [trade-record-one-len] of myself]2 o4 t6 ]) B' q  o' L" V) s
[* ^" e5 n) e6 a1 R, j) p1 M) P
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)+ \* Q  m( U, |3 p( m8 v* q
set j
7 g% a7 h) R1 l+ g" c. w( j + 1)

3 W4 ?$ z8 z! f& N% i+ `]1 \2 Y, K! i* z1 N
let k 30 {( i3 V; q3 j6 J
let power 02 @$ z8 ^5 g$ f
let local 0
3 |( r) V  p/ Qwhile [k <[trade-record-one-len] of myself]
' H* X! S+ f& P% \* i( x[
/ a7 i7 V# z0 h0 I6 D+ V2 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)
& J6 d# p) f+ Bset k (k + 1)
" e- U2 E5 O+ W8 k( _], d) V, w2 a$ Y# N2 l7 S
set [local-reputation] of myself (local)" H) V& J2 Q+ J; c/ J" M# Z
end
( X! o! q( {. j/ C3 n) g+ G+ b& I& k4 D6 B9 E
to update-neighbor-total
4 ?% h4 J7 W+ D. W
9 ^9 a7 }1 I3 q7 n3 s- W2 a! ?if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, v  m  b! {4 k' f) E3 @$ L, Q* H9 ~0 \
$ e" ~( I! \' e$ Y, d
end8 K. p- H5 s3 R: ]( r1 s+ \

. z# a3 Y1 U* {/ f" jto update-credibility-ijl
- Z9 i/ }8 k  q0 ]8 C
2 J- c  \" V% P  h/ z;;
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。' x7 p/ C' f, ^* Z  C, b
let l 03 Q; k7 u. \3 v. y7 J
while[ l < people ]$ w: }5 a, J: G
;;
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" t6 q  }2 C# C, m7 H- I
[
' Q0 c! x& J. b& G2 ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 g# X4 o) E$ w5 w
if (trade-record-one-j-l-len > 3): s6 I9 J/ E1 a" I( h+ C6 T
[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( z3 o  o+ F0 z
let i 30 q0 k- l' N' O# Y  X/ ^
let sum-time 0
7 }6 s5 G3 j8 {- V! kwhile[i < trade-record-one-len]
& s2 {  f0 c7 Q: Z  @: y[0 q7 B% H+ ^1 C: H9 @7 V. R
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 o+ j& r  I  j; X6 ~# ]! \set i
$ {( K; q$ z! z( i + 1)
% Z) C7 h" ~9 X: B! V
], ^3 p) u" z! E. T
let credibility-i-j-l 0
1 @) S6 k( l. A9 ?/ y;;i
评价(jjl的评价)
0 X+ U0 B3 Y  _, W4 Mlet j 3. D( p; V3 j  g, N8 |' e0 ]) ?) q
let k 4' `! t9 S+ Y  i, l
while[j < trade-record-one-len]
: [8 o( s0 N: L4 z3 \' d. D[' h% V/ {6 a% V& N
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉9 B' I+ W. q) }" v; T/ X. v( K1 N: [7 |' C
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)
" u8 l& k9 w: h: W' Y: @4 f1 Rset j
8 |% S; @: X7 x, i1 B( j + 1)
; D; m: Z- l- j
]  r" Z, p$ l. V& l  I* A9 x
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 ))9 g; v. L" ?1 t
# Q' I& V( ?( q. d0 Z$ k

5 Y. b# V; p9 G2 W3 Y# dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 L7 \) Z" ]/ P- C
;;
及时更新il的评价质量的评价
- P: \: v& t  A* L6 o  Xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- _9 G4 j" n' n. q& jset l (l + 1), c) R% f% I* @7 d+ ~  A
]
. `3 R7 V' n$ d. p5 M0 v% j# }end5 t6 D" H" S9 K; A& m+ h
+ k* y& y6 P, C- Q* I6 B
to update-credibility-list! w& n0 _$ m+ Q2 ~. V3 a
let i 0
: w# |8 [6 S" ~6 I0 U: l* ?, vwhile[i < people]3 N! u5 |2 o9 @! [
[
% L) E$ H" q: V4 K6 W* {' Rlet j 0
7 N, Z# Q& m, N9 rlet note 0
/ [/ M- }% _$ S8 k6 D9 B0 r( h/ Mlet k 0
  H/ ?( z5 q  J+ L  B, K- G1 m8 Q;;
计作出过评价的邻居节点的数目
# h3 d/ Y( U( ?0 M) B* o4 }while[j < people]/ T/ Q, B- M# T" I$ o
[
1 I- ~' n7 R9 U. m) y& Eif (item j( [credibility] of turtle (i + 1)) != -1)2 o. r( C& q3 @+ a2 q' A$ G" I
;;
判断是否给本turtle的评价质量做出过评价的节点
; i: X: `+ i' j[set note (note + item j ([credibility]of turtle (i + 1)))
3 A6 }8 a4 f6 V, M% R* G6 \;;*(exp (-(people - 2)))/(people - 2))]
& _7 N; `8 h0 ~5 H5 B- `) f
set k (k + 1)
1 u& I3 n2 @' h  p! D]
6 T! r$ d. O+ f7 S2 S" y9 z1 tset j (j + 1)5 w" i1 d2 `5 m6 x2 M, `9 d
]! B2 p1 a; E; w4 Y: m& H/ L) X
set note (note *(exp (- (1 / k)))/ k)
( M6 ^" v6 s5 W. n) [set credibility-list (replace-item i credibility-list note)
! o2 x* r2 H2 u3 f! r; n/ oset i (i + 1)2 H& S3 h8 F! g
]
+ I( ?9 j& b  j: Q% ]- V& U# `- {end
) T( b% f: k* N: n) T! p, V2 T5 u. {6 v( w% _4 ]' G8 s3 Q
to update-global-reputation-list1 P; h; l7 m/ l7 Y, w
let j 0
- F# Y6 Z/ Y4 _while[j < people]
: s- n, }! h" r8 g% U, `- ?[, D1 }8 d* _4 [9 G; _* b. Y# n1 F
let new 0
2 C5 s! M- [1 @) ^% U: S! f2 p* I;;
暂存新的一个全局声誉
* j/ E" V; M! f! e" D$ i; j( D6 Slet i 0
- r' ~6 q8 ]5 @# p1 m  t% Clet sum-money 0
, e+ z" Q4 Y$ ^" Q! ^let credibility-money 0
7 I( s8 H+ Z; }7 S3 Q; T! l& w* dwhile [i < people]/ y. b7 [1 H8 ^) n. k" C: T
[% W' q, `, ^$ D) r- O9 _9 r" C
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 D5 `+ F6 l3 Z: N9 ^8 I
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# Q% C3 I* J/ n1 @
set i (i + 1)) y- x7 i0 B/ e3 @+ G5 r
]9 S  t7 T/ w& w) J% e; Y
let k 0
' W1 U2 U+ ]) V" n5 @7 [# u+ ^; Plet new1 08 o% ?" w' ~4 `1 V# ]- z* b
while [k < people]: q3 |# p8 u% \$ x) _4 D( M7 r" H  t
[' C% A$ ^/ `* Z
set 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)6 y2 j9 B! W" F! G
set k (k + 1)3 a, E: t/ d' @; g
]5 g/ `6 C0 G, I! ~; O3 V5 g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & \( W' R6 J  s9 Q: S0 {8 c
set global-reputation-list (replace-item j global-reputation-list new)
5 N( i, k) N% Z4 r4 F! e# b: Gset j (j + 1)0 I  C2 y8 Y- r- x
]
8 `/ @. V3 v1 g* ~  Fend, a1 e& q, t  H( w- t* N( m: L
! u2 w. c8 O1 ]  y: n+ W) t8 t
7 d/ U! L) Y% r& d- ~: d

  R! ~- L# G5 a( D- S/ `to get-color2 ?$ ?1 T' i$ t
. m! h! [9 U) }- w6 H
set color blue
1 R1 E" ^. \& n
end( Y7 l: |" @6 x: p3 ]4 [/ Z

1 u! [" A' X1 E' m8 Ato poll-class
! O% A* c9 J1 d. g: V4 j% {6 dend& L+ u  I$ {: P+ o) z1 V. Y6 B

4 l, D2 e  k" I8 k" K/ q7 Kto setup-plot1
/ o" R1 [, _! |/ c9 W+ O
7 D' P% g  @/ l; T& }) Tset-current-plot "Trends-of-Local-reputation"

' R1 A& p5 F& _' y
) u2 b2 B: @4 G# Nset-plot-x-range 0 xmax
4 C  l. q; u) |: t4 \$ o' M: j

* i4 H! e# s  p+ A" d  k& _1 zset-plot-y-range 0.0 ymax

0 j, i3 H5 L  }- `: cend
; o, H2 [# J! L  M, J5 t" D; T$ L6 I
to setup-plot23 f5 E$ o  Z0 D4 Y

' V! X* Q- U3 g/ I4 Xset-current-plot "Trends-of-global-reputation"
0 Y, C( l+ y, ]3 g0 `, z: ]: p* H* W
' E: q( E; d8 c3 ]) N
set-plot-x-range 0 xmax

) d1 f) _1 ?/ q- [  M$ X9 R+ d$ I7 b+ o3 V! }' F9 E0 N3 c1 W
set-plot-y-range 0.0 ymax
4 P  Y/ U7 V0 h- [
end5 ?, E( Y: N3 g( H, h

$ m9 z) _. F/ }3 n# |) c2 Sto setup-plot3, N/ f; r2 [% N* p3 V) ^. o
* Z" u9 r0 \, }  i/ o. E  {
set-current-plot "Trends-of-credibility"
) r0 I* s; b) s# n

6 T: \: n% ]1 ~+ q* zset-plot-x-range 0 xmax

9 I; o' Y4 |: L; s  z
" S2 R& H! T  L7 P$ m' x4 Dset-plot-y-range 0.0 ymax
+ S2 a8 X& B$ p1 R$ C1 M
end. n6 S7 f) E1 [9 Z5 N
$ U( _( e7 u# v0 r& |1 F% |
to do-plots6 Q- M5 W0 U! y8 w( ^- J) B+ ]1 _' S
set-current-plot "Trends-of-Local-reputation"7 H5 `- n- g* f/ ^
set-current-plot-pen "Honest service"4 T! s* ^: l5 `4 J# N6 h1 m+ [, ]( }: j8 I( j
end
: z7 n% j1 G3 {, B
3 F  c1 C$ o1 R  l[ 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., n, e, g/ D; ~

  J9 N7 b4 ~8 D; h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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