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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:4 w0 ^# i( E7 h' B& Z) a
to do-business
$ }. z" p4 Q2 W- I2 w( f rt random 360
6 a9 o6 R- K" d! X7 a( m3 z fd 1# n" c- k- L0 w! ~5 N( S  u2 z' q% N
ifelse(other turtles-here != nobody)[
0 l. I' j; x' }$ d4 ~   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.+ [$ @% ^" M( v1 r3 J) N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! W+ S+ ]* F! J' o4 X
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  w, U. m5 D' I. }9 w& A# W5 J( S
   set [trade-record-one-len] of self length [trade-record-one] of self: [7 C0 e% S7 s, j2 y6 J, B
   set trade-record-current( list (timer) (random money-upper-limit))
) ]6 G: F' x' J+ L7 f1 Q, ?: A3 K; U$ M! i! d
问题的提示如下:
" `* X. z2 c/ Q
! D7 N/ o' K( O3 werror while turtle 50 running OF in procedure DO-BUSINESS. o/ V; Y  d5 e$ f: i  p
  called by procedure GO
6 G1 a9 x. ^" V/ U; r  T3 {OF expected input to be a turtle agentset or turtle but got NOBODY instead.: f: v6 ?1 u, }/ Z0 q
(halted running of go)
  d9 C: e+ V. S, d: G" I; v2 h/ P: T; G8 f& D+ ?$ H+ s
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~~
" _% N9 B3 d% l0 z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1 S+ H4 n& a" k4 C
globals[' h" q  C) \2 t* F7 m% m7 B
xmax
0 h5 U* }( m4 p6 {6 E! T/ }ymax( e0 A2 N2 }& n* d) |: f
global-reputation-list4 s# Y1 x5 i+ t/ N4 I- J: @- [1 i$ z
2 Y+ A5 x5 i7 A; \8 N. a' V- E/ L: n
;;
每一个turtle的全局声誉都存在此LIST. B/ }. ]. _' F0 c3 g- \
credibility-list" J  S$ [) g4 U+ _0 H+ w
;;
每一个turtle的评价可信度
8 F; d9 G( n1 r6 N8 xhonest-service4 x$ x' Q/ B% `6 X/ u2 \) |# X
unhonest-service
! q& L6 k6 B- m. Coscillation
. U' ^9 ]) w8 N' s/ q6 M- Vrand-dynamic! J( ]* {' |& S! R0 n
]
4 s3 t$ i6 p. ^4 o9 y9 ?  S6 X" p# g( Q( }  W. G  ]
turtles-own[
. a1 N7 ^4 A) {% ftrade-record-all& t$ f0 M3 h+ W
;;a list of lists,
trade-record-one组成9 Y) u* B/ T! A% ?
trade-record-one
, i+ k" b2 U( i- U;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录' j9 Q5 S; o# K

0 p. y1 ^& f! w$ H0 Q  K# M;;[
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]]  _0 v6 s* P! P1 a. L/ K
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]/ D& @' h6 J# T
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. i% a. d6 _% o! t
neighbor-total
6 F7 h- s" d  _( ^- H;;
记录该turtle的邻居节点的数目, Y# V, I( N6 G0 Z
trade-time
+ _; [; k- s9 _;;
当前发生交易的turtle的交易时间
- J, W4 D6 _3 y! m3 p) Qappraise-give
+ V5 N8 C  u9 X0 t! b2 P;;
当前发生交易时给出的评价2 [* h3 {6 x  G! C
appraise-receive  W1 Q: Q- ?0 _" I, H* y
;;
当前发生交易时收到的评价5 K4 a  q' c0 a' o
appraise-time4 G9 A) X! s6 I
;;
当前发生交易时的评价时间
/ o' \4 o  U7 c6 q, S. P5 g! Olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
, z% |. i7 A5 ^6 _6 F9 {& [trade-times-total' m4 H" _% ]( {3 `  i2 ]2 f
;;
与当前turtle的交易总次数$ [) n7 I1 m  b( m- K
trade-money-total8 [  G6 m  g# X' o* ^0 i1 d
;;
与当前turtle的交易总金额% y$ k% I/ G9 s
local-reputation
# F* W+ c) E. J2 zglobal-reputation% Z* ?# V  }2 ?9 k7 Z3 G
credibility
2 n; I* D. a7 W" \" N$ F;;
评价可信度,每次交易后都需要更新
# V2 Q# i8 T3 z6 j8 m" O; Zcredibility-all
2 J- c' y( i3 v/ r' l;;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+ U% L0 U( u: H: A% d5 H
/ O# _2 C* T7 Y( ]% G& q
;;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
& e' x8 d" |4 @credibility-one# A, U: h3 v0 l- 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
7 g7 |5 S9 N7 S1 O/ S! E$ x3 Bglobal-proportion) S8 x, B' k( ]! o( S
customer
4 B! v/ A! O8 Mcustomer-no
+ I; s- w6 `6 J" Otrust-ok
6 I: P3 a6 {2 F7 utrade-record-one-len;;trade-record-one的长度; [) y7 R0 F& S( z* O
]4 R1 A8 V2 w. P# g

" K  ~4 Y8 \) i0 m8 J/ h;;setup procedure* A# `/ w* R/ a

: }- q+ I" u8 }$ @8 |, U* Qto setup
/ w$ l9 M7 x$ `2 L$ b0 R
- ~: c8 v* G) ~' x' @8 rca

9 E7 v! Q5 c" \' d7 Z
% v( A% f) R9 I6 Q  y3 m+ }initialize-settings

6 H3 r' A/ C& r/ t$ a& ]; z* g+ j
crt people [setup-turtles]
2 ~7 O! W9 W+ `* E. o' I. V$ p
" z3 H5 g% X# Z. m: I9 g, m. Q* X
reset-timer

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poll-class
0 O1 r, C, T$ J, V

, ]" c# ~4 l& e  b3 ]' F' msetup-plots

3 M% |) F( |! I% o% ?
4 v. v. j0 Y; c# j2 Wdo-plots

# p, B- f8 v% V  Xend
, x% u9 i  x8 E" n0 W% c2 [! T9 E7 o3 _9 `8 ?  u4 @/ d0 q
to initialize-settings
" A, U- ?1 s' I0 Z* Q5 @
9 A5 v* A$ v3 y: J3 Y# xset global-reputation-list []
8 O( s( _& l$ N) |& Y8 |
) X! p1 b: H" I* P
set credibility-list n-values people [0.5]
# z4 G2 C3 S' [" y0 t9 L1 j
, b  E8 v4 s. h8 v
set honest-service 0

* [! [" S, h2 l! n/ z0 e* d& m
+ B1 N8 s9 g5 L6 S5 e) ]0 gset unhonest-service 0
9 M- p" Q7 v! U# ?) n6 x+ [  G' {
( K3 D8 o, I, ?2 [4 R
set oscillation 0

' f; n: j* R- M2 E0 M8 e0 ~0 f6 D' R! i3 x2 P* _
set rand-dynamic 0

& D1 z" y7 }5 u1 e9 Dend7 x' z9 t  E* ~% m1 _: U$ M2 ~( {

  R+ X% ~3 Y. O; `' K, X/ Eto setup-turtles
; A4 z! H6 w  X! a( N- ?set shape "person"
% ^3 N0 |# e& X2 U1 fsetxy random-xcor random-ycor$ ]* P0 f/ y* ^8 D( N
set trade-record-one []8 C! W. g9 s- G( P3 V  C  C1 j1 _

, M* ?8 F8 I4 z3 O  _6 Wset trade-record-all n-values people [(list (? + 1) 0 0)]
* R+ o  G' O; K1 L! m: j% R- W
- [. j8 F; D% b# c5 Z8 d
set trade-record-current []
) k; }, C- G0 e1 b- g1 Uset credibility-receive []0 E% n# Z3 C% u" G
set local-reputation 0.56 g. M3 m' Q# m! z  y
set neighbor-total 0& m4 K7 H3 _' Y# q- S* M2 T3 B
set trade-times-total 0
2 Y! @' m/ r# `3 G: G- yset trade-money-total 05 T$ i5 K+ T( P$ H% U% B
set customer nobody3 P' r; @" Z, h2 a9 p9 h4 H; v
set credibility-all n-values people [creat-credibility]
) b& [- R3 A! K+ m1 j3 ]6 X/ Cset credibility n-values people [-1]9 I$ b6 Q; j' R. I
get-color2 G7 U) x& u' W7 u  S
  }* Y/ {4 J+ M7 V3 ]# A  ^
end; E/ @& F7 N/ ~. `3 `
& d' W1 U& N$ Q( Y7 ]
to-report creat-credibility
; x# h% H' p9 p/ z, i6 d' s# [report n-values people [0.5]4 ~% c' Y+ m! \& V$ j
end
7 p/ B( W& `9 A0 s+ r5 N% r( Y: t; R" h5 a& k  v) ?! r1 Z
to setup-plots: R" H; {5 C' P. s4 O) K/ E9 H4 o: k
2 H5 c2 l5 s* F
set xmax 30
4 v0 C5 B* T9 X- Y  p

" _$ l# E/ p* M/ a! P1 |' Mset ymax 1.0

1 N2 y/ i( ?$ e8 `4 s- G  K
+ r) h$ r) Q1 G" C4 i2 D" h. |clear-all-plots
$ Q& N$ _' e. ]$ C! C1 {/ M
) c: k4 D3 m+ A4 Z1 T( S
setup-plot1
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; j- K. F$ q+ ~* B) I2 A
setup-plot2
9 @( K: p5 D% X
  n; k& Z0 u  r9 h. w! G+ J
setup-plot3
4 g: j9 v0 {$ Y; Q
end
% [: z5 F6 i; `0 s
6 Q" o9 [% N$ t6 X;;run time procedures
' L( l5 `5 Y5 O9 U7 Z8 W
! E5 o. v% n- B( Y; R  cto go: w  H3 ?, r: e  y  X' G2 c
) s6 g: K, N2 o$ A# u4 k/ n
ask turtles [do-business]

: Z' F: |6 y6 y7 R1 Y8 r8 f9 s3 ?+ yend, L3 G4 o9 N  Y) c. ^
* K7 o& [* F) u2 M2 H: _
to do-business
' c* ?3 U# O/ |: y

$ m* _  @7 m9 Q  L2 b3 q& t' a* f
0 M7 m. E* T) c2 _; L* urt random 360

" y. v2 K0 N9 ]/ m7 P, {; ^( a% h, }
fd 1
6 f3 u9 h/ O9 G, U$ A

6 p* c9 p- x# ]. ]% Pifelse(other turtles-here != nobody)[

( D. t# k! P. R) T0 {$ {* K) k% A5 x0 @" I- r  C& b
set customer one-of other turtles-here

: v" c$ k7 ]6 ]4 t
" t* v- X# w  Y. ~;; set [customer] of customer myself
' |6 M% B* R" N& W; @% r
" O3 ?6 O) C4 I2 R
set [trade-record-one] of self item (([who] of customer) - 1)
7 n0 a/ D" m! G! }& A[trade-record-all]of self" `( \$ l6 s: Z2 K! A4 W! I8 V- d
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; u; c0 \# B6 L% }8 N
# s% s2 \; [1 R$ D- `1 [* U5 D" I, mset [trade-record-one] of customer item (([who] of self) - 1)
3 i! G% z8 U- }3 c[trade-record-all]of customer

; @9 v. [2 U+ ?7 B  ~& T( n! D8 l% r! x& |4 z
set [trade-record-one-len] of self length [trade-record-one] of self

! _, [% `& k# H1 I8 b! a0 [  x# `: {
set trade-record-current( list (timer) (random money-upper-limit))

3 }: n3 c. [/ m4 P3 H8 i0 e  E  P$ ~7 W
ask self [do-trust]
& c# o, X9 h% Y4 X& w) Y% X1 A! S;;
先求ij的信任度" [+ A6 b  q4 g$ ?

$ s! n( i- w) M5 M0 k6 Yif ([trust-ok] of self)7 x! X' ^, O$ Y; B  p4 m0 j" r5 ~$ t
;;
根据ij的信任度来决定是否与j进行交易[
% E! N2 l  `& M9 x8 u" task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
% m  R* O# O+ t: F1 E: s6 b2 G" v- x( D% Y- `) q/ R+ E" o& v
[
% V- _3 u3 j0 t2 L+ Y

# @- A- \7 _$ u+ W/ `( j( {do-trade

8 j1 q# k$ \+ f7 F% p& y* F  B, ^  {' Y
update-credibility-ijl
% o& p9 l: \# d7 V/ @4 h
" e* Q; j3 K, l8 m1 B7 M
update-credibility-list1 d" z* D6 e9 k( s1 z
+ ^+ ]6 ~4 ^0 R
6 r3 q% K' ]) Y& v
update-global-reputation-list
  x& J2 q1 G4 k. L! p+ \
* e0 k* K3 f6 T3 m& J0 M2 u
poll-class
# T) T4 W; e9 F

% w2 D! l; k/ W* aget-color
* y' Y8 {" c, m( ]$ g

& x: r4 h% w" u]]! e2 J( }. Z) T9 A: f+ ~- O; r

4 U6 B* ?  Y$ w3 f1 f: U;;
如果所得的信任度满足条件,则进行交易
) e) V! V) p0 N1 `/ V! i) w, T0 m; j
( l$ }7 k6 s8 `. m- \2 {9 q; k- f) o[
$ H% e; K" S. Z8 ^1 N6 s
- \& `7 S: S9 ~, U7 y) ~8 A
rt random 360

( {6 q; |8 K( |  o6 {7 j6 P8 h) C
3 S- Q" e7 @3 G4 t" I0 cfd 1
3 D9 S& [! N% u* ]
1 |: }. n- ?8 J' U7 x& J
]
% c5 P- X% V& @+ W" v. v, V$ t

$ b+ \5 q7 v6 ^1 ~3 \3 v" e' _end
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3 x% Q+ q2 F( Y/ ]7 B3 }% v
to do-trust . Q9 c2 ~# X- r( T5 q. q7 z+ s
set trust-ok False
( h; h; w7 U% K3 s4 _4 i! Z; C7 F* P- j. Y8 `* r' d, w, g9 O3 ^" M3 `2 `
5 ~4 s' v* E; G. X
let max-trade-times 0( ^5 ^. ]* j+ n! S8 K1 L
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 J  b, b5 n, ?$ j; F
let max-trade-money 0
- z( {' V- B9 Pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* W) C: |7 I1 P" P
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  ~" c) K9 Q) f2 E* K9 o% H2 c2 h& b( I, ^. J

7 F; }6 D- S1 y8 d% t7 f) xget-global-proportion
2 n  k  y3 w$ g4 e  {1 i9 olet trust-value
) i3 n" r9 {6 p% I) 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)
# m9 |/ ^/ ?" M. i5 w9 r2 N
if(trust-value > trade-trust-value)
& V4 \, h% P! o$ l" R) ^* _[set trust-ok true]
- v" w7 g% U0 A! p. Oend
2 w# z8 }7 u- b" m; T1 ]5 W7 u2 V% V
to get-global-proportion5 T" A! M: r; c* P5 P9 i
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 _6 v7 _5 @% t7 t# l8 f3 [3 e[set global-proportion 0]! y  t1 z1 ~( j+ ~- k
[let i 0) l( K+ M! H  ^  _
let sum-money 0
, m7 D3 Z. b- g2 H: P" g0 h9 K1 Awhile[ i < people]6 j4 B) T5 p8 V: |) R
[' M# E2 X) u. u3 C
if( length (item i8 Q# V, [1 m3 j) Z" D' i8 R
[trade-record-all] of customer) > 3 )
) P! |. [; K& O; b( E" w# P
[
6 M, E" T* I- V) hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 x) ]/ X9 r7 V' ^/ Q' `]
; ^5 d5 u/ w' e. z/ S]
1 O8 {+ x) z3 W: E0 t8 Ylet j 0: I, ]) e" r, z0 B
let note 0, z9 _! K; z0 B! K( y
while[ j < people]
( s2 g/ \3 }/ l9 c% L" V[' ], o; K! K! i
if( length (item i
- e& p2 v$ r$ O  D3 s- b& n/ ~[trade-record-all] of customer) > 3 )

# B# v# Y: l; S, K  `[6 M- f+ l9 }! j
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" B! T* j/ B; H+ e) z: d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 H3 ~$ s( }2 a( w, }& i) j! C, r0 Y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ y  x0 N6 R8 y, L; w- c4 e]" `' l$ f' ~& X
]  E) H4 T. w1 `3 t) _/ i' y' `% i9 ~
set global-proportion note# X& \% y* w( t$ \! @* m9 s" B
]
5 ]& d! J: H: [+ T; ~end. P  y) F6 d7 D% g
$ f  S+ J4 a8 F; J
to do-trade8 I: Q9 W9 Y7 g$ P5 u' {
;;
这个过程实际上是给双方作出评价的过程
& F8 e" I# D4 H  i* d: M# L( Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! R5 _! s% X7 v  s! I  cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ @4 e+ L6 h: z" e1 }# ?9 Yset trade-record-current lput(timer) trade-record-current
9 z4 r& ^  v; h, N7 t# Y;;
评价时间! a  u# i) g" \  Q# k
ask myself [) i# R5 {. f3 T1 c7 ^/ x9 q
update-local-reputation( I& v' O, \' w3 ?9 M
set trade-record-current lput([local-reputation] of myself) trade-record-current: H7 }$ K6 n9 Q+ @/ ]8 F
]5 s/ f* k+ S7 k8 z, U# m
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! G1 p! W9 O' z. t8 t2 N
;;
将此次交易的记录加入到trade-record-one% L* D! R# f; ?: D. a2 Q0 ~+ A
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 U' w* ~. F7 s8 \- P
let note (item 2 trade-record-current ); R8 r, c9 k5 ^6 B7 o( w% P% h" w$ \
set trade-record-current
& x# |1 L) I: j0 H: c- u(replace-item 2 trade-record-current (item 3 trade-record-current))
' M7 u' @& t4 X6 G
set trade-record-current( F' h) ]9 u* _( S8 m) t
(replace-item 3 trade-record-current note)8 a" k% X/ y( y/ x. N

  M' [) y8 T, I; F+ Y
" p9 i0 R8 @. G# }+ _
ask customer [- e! d0 m3 t) _! L
update-local-reputation/ \3 Y7 ~* l& |
set trade-record-current4 q) [/ L( @& [1 A8 C( @( b
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ l% o) X/ U2 G8 x; s* O; r) N
]
6 Q1 ~. s* k: s- u% G
! k$ F2 r( F2 C/ q  W

1 o( {; I7 g% S5 D; `set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; ~8 @% P. W7 [4 b7 _

+ S, ]; x. y+ H; C4 |set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' C" V! y! W2 R;;
将此次交易的记录加入到customertrade-record-all
6 e4 c5 p9 w2 B/ }1 dend4 G& S8 T( S- Z  B

- F4 j# {% a  [7 ~# `. O6 M/ b! Tto update-local-reputation
# c7 q8 f! Y$ B: L; qset [trade-record-one-len] of myself length [trade-record-one] of myself
, I, z, @( n( ?( Q. v# \. b$ O- g  |5 M( f- N2 o- N

- n4 C( I/ m0 |  W0 @$ t# X; X;;if [trade-record-one-len] of myself > 3
9 V( y( g4 F4 K
update-neighbor-total6 a6 R- A2 x9 ^; [* P
;;
更新邻居节点的数目,在此进行
/ N. C4 X* t! H$ k3 r2 _* T" dlet i 39 J5 W: E- U6 g, W# X9 {: T: D( P
let sum-time 0
5 j1 a( a) m5 j) a8 H6 s: M& @9 H5 Jwhile[i < [trade-record-one-len] of myself]% _" ?1 y- R2 N- P8 @) n
[! Z& G" E4 r% a: M( e, W
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), y2 w" |- c% |; W% }4 h9 Z
set i  h2 ]1 |5 Q7 O$ j' j: X$ G( ?
( i + 1)
# S; J2 r3 P) ]( f
]4 w* z# X: v7 X' V9 z8 M
let j 3
- }: s9 j& L( clet sum-money 0
' ]9 K6 ^$ j& h/ d: x) l+ g' z& Ywhile[j < [trade-record-one-len] of myself]
4 o6 C# i; l5 i3 I& W% ?[/ I! k( H9 H5 X# ]1 m
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)% g4 G$ y/ J) G8 m$ E; ~
set j5 G  F" P) [7 C7 a; t$ g. k
( j + 1)

( v1 V- d; E6 S- E  j]3 E9 l* _5 J* W* Q9 {
let k 3; ?# J# A( q1 L! B: [; g7 k
let power 0
! [2 P+ }" b9 ?- N5 v. N& ?* olet local 0
/ F1 d5 d. f9 J2 y7 L" p6 ]while [k <[trade-record-one-len] of myself]9 |$ \1 j* j( |$ V! \( ]- O
[  ~$ O6 L) Z3 y$ }7 j
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)
; P0 K- W- b+ o+ G$ b3 y' l1 ]set k (k + 1); G9 D: H6 r! H0 A' ]8 O  A
]
) e( M; G2 Z6 h9 Jset [local-reputation] of myself (local)) D9 c3 @/ o/ x3 g) F9 N
end
9 r; J$ t3 u. m2 `7 M" \  X0 ?  n* e. K' A4 W0 p( T# q5 ], N/ h
to update-neighbor-total
( F3 ?& E! t5 S1 ]; R% O( x; ~# Q# w. b
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 g# h1 a4 A; g# u
/ F% }" o- d' u9 t( z# W

* {' {: b5 B6 Eend9 O' Z2 G8 _0 w0 d

7 O0 O# U& ?+ \to update-credibility-ijl ( N9 s! Y/ _6 a

1 ]$ p7 X0 _0 m" Y0 `9 B;;
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。, R& o8 |8 i  R; O+ @
let l 07 m% u% _8 t$ `
while[ l < people ]
3 G) q6 J" g+ Z" F! ~) l: 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' A* ]0 n& D  P& S* M' c
[
# Q/ T; o9 \; J4 f( Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 Q9 Y" b# V5 Z
if (trade-record-one-j-l-len > 3)7 G! _  U. n; d/ |5 B
[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# \! f& Z$ f# ~
let i 3
5 S: j% J1 C% _# S. v6 e7 ^let sum-time 0
: S$ ?% F$ z, A/ w2 Vwhile[i < trade-record-one-len]
# m1 y% l8 z* q' P, a[
: S0 V( ?& M2 B7 Sset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 D2 K: h2 i  W3 R: A+ ?6 ^  j
set i
0 D$ F0 H, ?% m3 D! l, v9 _( i + 1)
' A* s- a8 l$ `
]
4 P0 s) T3 T3 Vlet credibility-i-j-l 0
# j) Y) ?9 V1 c! q2 u' R5 F( L, A4 s;;i
评价(jjl的评价)
% l6 C4 a/ ^0 H( d- Plet j 3+ I' N# C9 f$ \# s
let k 48 r! s3 U# u  U" x: b  h' O! B
while[j < trade-record-one-len]
% K1 h% j; f0 H% ~9 r[
$ [! T' R- v5 G6 p4 _" Qwhile [((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
/ V: D# ~; o# [+ ~) A9 B  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)
$ C( {! y1 V. x4 Sset j
4 D$ w9 T; ^2 w# ~( j + 1)
, m; ~* A) p% [! s$ U
]
& r4 }) r5 h0 f2 Y) {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 ))
+ T+ e% `3 U! t% n4 ~* ^) E0 \  ?5 W
" [% r: E. S  G. u, B
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ H( |) e  T9 A. A& A
;;
及时更新il的评价质量的评价
8 X2 C) R% v, m, Y4 h0 Iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: P/ v/ q0 T  b! V
set l (l + 1)) R# j  q' o" V; a* g
]' c" Q. I0 j% r. P
end5 M1 H: c0 n& ~0 t6 A5 T! Z
, H3 N; p: P" \$ M& z# M
to update-credibility-list
. ^6 p  u  l& L# b+ W% W! |let i 0! S! z6 o) m7 ~/ b2 p% t
while[i < people]
/ @+ V, x# {- u0 _2 h  h4 `[) R+ N- O9 p' O8 c( X! p
let j 0& V/ A2 r0 u! k' Q$ n0 ?5 W4 I% ~
let note 03 Y+ v. _  ~8 m6 x7 ~( f
let k 0; s7 W/ g& a; N5 L2 Y
;;
计作出过评价的邻居节点的数目( r" t* ^' n$ U( z, E& K
while[j < people]; F$ C* g' p" Z5 ~; ?2 {# n
[
* [- N2 {/ H6 ^) n! m6 R! {4 L, G: Vif (item j( [credibility] of turtle (i + 1)) != -1); O$ \( ^$ }# z; m7 [/ P6 O
;;
判断是否给本turtle的评价质量做出过评价的节点4 R! e) C1 U* |/ Z- v; n# ^  Q  u
[set note (note + item j ([credibility]of turtle (i + 1)))# X6 l! t2 c# \
;;*(exp (-(people - 2)))/(people - 2))]

  f/ U! i8 k: r" X* C; Sset k (k + 1)
" v9 G$ q* R: r+ ~: E* W]
4 Z( e& r" E( ^! C' _& `, gset j (j + 1). X+ f7 j0 ]4 E* f9 C& n$ l
]
: A, G8 }  Y1 s7 u) d! W/ vset note (note *(exp (- (1 / k)))/ k)
  j' ?( m) i( pset credibility-list (replace-item i credibility-list note)2 `# @( l. Q' |; S
set i (i + 1)5 r8 y9 w' [7 r6 r* P- d
]
) S* O9 ^& [: ^4 Xend1 h# x+ b9 q) G1 r  s2 [" e6 o1 S
  J9 N' A7 I, A" E7 m2 }3 Z& B
to update-global-reputation-list) V' {1 T/ W& E0 l7 P- c1 s
let j 0
/ q$ T) Z& z' z3 N% F! ?+ Mwhile[j < people]. E( z) q& S/ H: d& ]( P
[! j* x# Z9 y  N( c7 f/ U6 I
let new 0. _2 x( @0 a+ C2 `1 k/ M: N
;;
暂存新的一个全局声誉
. z( u0 M/ E! _: q7 h1 g; ~( Jlet i 0* b0 O/ f# i& X! L, f! _
let sum-money 06 h3 s1 n) T, w
let credibility-money 0; S/ p# a7 p2 |  s: t( F8 ~
while [i < people]
- V8 x) d, ]7 [' T[
# n2 ~7 y  n$ ]$ H/ Uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- o4 u* Y+ J% s5 J4 iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; F! T- \# T: c$ V4 r; r2 dset i (i + 1)1 s% @7 y  U) n0 N# Q
]8 S$ I# ?- D, f9 Y$ [
let k 0
9 X3 [1 p, H) U' _let new1 0( I+ t8 a4 r# @+ D) s" S
while [k < people]9 Q- \, S9 ^( g* P" O
[/ R3 L8 B- u- B
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)
7 `1 O! Y4 c8 Z. Hset k (k + 1)( |' S  X/ [  ~8 I
]
0 ^# c3 t- ]; tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   s4 Q3 X% x7 f4 g/ ^' v& ^- Z
set global-reputation-list (replace-item j global-reputation-list new)6 C+ Q3 h5 m7 f
set j (j + 1)
! R/ \4 J, l) _& M; Y]
6 B7 X! e5 d' O2 E" a; @* Kend
, u4 B' K! L8 Z# }6 O7 J
& Q0 @3 Y% q* F5 }+ n
% ?+ k4 i3 _  I# T) m
7 P) {; u4 |( B" e1 Hto get-color4 H# l9 ~, n& b( v& a

% ~) |- A& z. D; }/ Q: p! {set color blue

% T5 A4 e. p% Q& Q) Aend
% }7 z2 N8 ~# I8 Z6 }  M$ O, v* H8 c& B1 ~& t
to poll-class
3 ]& M8 D6 w% m* tend& _9 E2 Q  O' p$ A  a& `4 l* D
3 q/ S2 D3 g' e: P8 l8 c
to setup-plot1
; c# U' W. U0 {# s( E$ i/ d( A" J/ ~- a+ v5 U2 c8 X
set-current-plot "Trends-of-Local-reputation"
! Q; T  }, b, ^# b. b+ [7 Z9 Y
) ?6 n- s9 @) a
set-plot-x-range 0 xmax

. S/ I" M8 h" J  t) f  F/ d' c. m
1 A  E6 l4 c6 l, S" P- f& A7 Oset-plot-y-range 0.0 ymax

# z1 w; Z4 T* q3 tend
$ L6 b3 l  B' S
; V) c: i  s3 W' l. fto setup-plot2
9 i/ u' }; Z, ~; o! q$ j9 U
0 V) l* S% _3 E/ @- q8 ], Q+ Zset-current-plot "Trends-of-global-reputation"

- c8 [  [0 x' Z$ n! K, f. O" I
2 ^! }" R+ ]/ v0 H  _6 bset-plot-x-range 0 xmax
8 A5 c/ ?6 C$ j) {, r3 T) Y- t

) R& m* N6 k3 H2 h: |set-plot-y-range 0.0 ymax

. k- F1 w# p& lend
" m% r6 n0 v' w" I8 ^4 d+ c, b
  v8 D- f4 u7 w6 P5 c  Y9 R- p# Uto setup-plot3
! Y! T# B9 G( }" s8 n9 M1 F4 w* W8 ]* b& w2 S, ^
set-current-plot "Trends-of-credibility"

% ~4 G# h7 M9 z6 L. ]
3 D! }. w+ F. W# H: e/ R8 Q( g6 V4 @set-plot-x-range 0 xmax
4 i, M9 ~( |( x' k) A

% y  M' M% I1 N- ]% x$ Z2 t& Gset-plot-y-range 0.0 ymax

) A" W" j3 d8 Z# |" B/ Qend
, K6 U2 V1 c' a5 e! |3 S" V( u2 E: U1 W
to do-plots
, Z* R2 w4 \" \% M; [set-current-plot "Trends-of-Local-reputation"' R. O# P; U' w+ Z' W
set-current-plot-pen "Honest service"
5 S1 v* c" v6 c0 {3 U) I* C9 a! ]9 Eend! _$ F5 ~% z/ {& u- R- M# |
9 M) C& t5 P4 Y' P! a! y! M
[ 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.4 i% b7 c& T5 r% K# ^: [

/ i8 J- B. a: Z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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