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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:
3 O9 Y( |- P3 z6 F( p% ~& jto do-business 8 z& ?- b3 ?6 H# P$ E. f
rt random 360/ F" z! P3 T; h; W0 {* ]# c: J
fd 1
. Y) x$ `( i; m ifelse(other turtles-here != nobody)[
! r4 B; h1 E% M5 h( o) ~   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.
/ e( b: W  }  X) N' F   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' E+ Z+ i/ w% }! D7 V. C% F   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( t  \0 A" x# D5 L3 _+ C
   set [trade-record-one-len] of self length [trade-record-one] of self. y# }! z' \- w
   set trade-record-current( list (timer) (random money-upper-limit))" ?/ W1 b6 q* q9 A% w8 W
% K3 Q- k- E! o( Q& g2 _1 U
问题的提示如下:
& E. t( k/ q. ?: F, C' @/ T6 X! O- H( S- ]0 @. j; R  h
error while turtle 50 running OF in procedure DO-BUSINESS0 q1 L" P  Z7 p0 e( J7 x- z9 x
  called by procedure GO
- E$ y$ t7 o5 JOF expected input to be a turtle agentset or turtle but got NOBODY instead.
) ]+ Y, B" F8 [- a0 E7 K0 O( ]
(halted running of go)
3 a# H$ e( }! h- v9 G  @) F- v  [& t4 x9 o1 w% D. J
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~~
& P0 }" Q# `7 }% t9 H3 s# R9 f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
' f4 p# R" b! @# ?. X  B# Xglobals[  e8 u# Q& D* y5 b2 b
xmax
8 F* F: k' `$ I6 p$ T  Zymax1 P, C+ M$ S% ^- L' S
global-reputation-list* l8 G$ b9 x, o9 J
3 \; W9 {3 Z3 Y, x# g  S, K$ q- C
;;
每一个turtle的全局声誉都存在此LIST( S8 c; E* R/ b  `7 G
credibility-list5 Q" I' g" U+ }
;;
每一个turtle的评价可信度0 X' n7 g% Y" N- i
honest-service6 V& s8 h2 ^$ P9 T
unhonest-service
$ U8 `% F8 s5 e0 Ooscillation
# j4 T' B9 r0 w8 @5 x, P" l5 s, Qrand-dynamic0 Q& {% S2 a$ H3 c- k7 m
]3 A& ]- c" T+ ?. d  c+ C

  T# |' C9 l) |7 {# [turtles-own[
- d& _: X) h& Ftrade-record-all& k2 L  w$ F% b$ j/ V. c
;;a list of lists,
trade-record-one组成1 t7 ]. q$ @. o3 B$ F: L4 ]( k- H
trade-record-one8 Q9 V0 ?* m3 m, X, }" {# L
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ h6 Q8 P0 g5 a2 ~- a
8 o2 v( [6 q0 E6 Z
;;[
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]]: R" n$ V- a" y0 R3 A. M
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]% z$ R6 N  ^# Y9 I8 L5 k
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
& N6 t+ F" X2 ]( d* uneighbor-total+ Y3 m) H3 Z, ?
;;
记录该turtle的邻居节点的数目
5 D5 C8 n6 d1 G3 u3 z, Utrade-time' b" U+ c6 A! @3 x% E6 O
;;
当前发生交易的turtle的交易时间
8 B! ^  {5 m' U1 Z; B* Tappraise-give
# ]. e! A! E3 s4 S2 h2 X;;
当前发生交易时给出的评价
( ~$ B6 ^3 @( lappraise-receive
& w- |4 j2 t! |, n( ?;;
当前发生交易时收到的评价
1 d! P8 g5 J" M0 Z- T& `appraise-time: l) f7 b$ O; y% U
;;
当前发生交易时的评价时间
9 ~; E, e6 _6 G6 Rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 `& |+ L  c5 s, Z# o& btrade-times-total1 N: a6 `. n, e
;;
与当前turtle的交易总次数5 C% V& ?; j8 T% P. |* ~
trade-money-total
& \7 y( a8 v6 N;;
与当前turtle的交易总金额0 [. S; `6 ]5 S7 }; {9 B2 \
local-reputation
4 |; L! @8 x: i7 W* @  z, h$ Vglobal-reputation- H0 P! g' |: A) `" U; I
credibility6 H8 n2 }4 X( T  w! j
;;
评价可信度,每次交易后都需要更新
; _3 \& {' Y5 S9 _) O4 G8 ^3 Xcredibility-all
1 _0 r+ c& M6 k9 k5 l- J;;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3 X. y" ~, w5 M9 f
3 E' b2 W6 t8 s! g  e2 x1 e
;;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0.59 V- U/ u1 ?; F
credibility-one' ^/ U: D  z' h" A) q& p5 @
;;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people6 ]4 A& Q; y1 M7 N
global-proportion+ F: s; y+ b5 V7 Q# a8 I
customer
7 V  ^& n! N' f9 y2 h: |$ rcustomer-no
: h: q# E9 Z' ?4 k) c4 T, J( ttrust-ok
1 G8 @) Y+ \& _# [$ xtrade-record-one-len;;trade-record-one的长度& c* G( ~* |1 o% S6 Q( Y
]/ l: X! n& ~6 c# c+ R2 E0 y7 h" B

2 B' A. I: b9 u$ ^+ L) U9 c;;setup procedure7 i/ r5 e' s/ l  r0 T' `) [" c0 w
4 W- Y' {7 M) O- `8 m6 v; O8 |" ?
to setup. h% J1 t/ N  ]5 A" r: b0 z) J
' K) V( \, I" Z" m) e, m, P
ca

. N/ V4 Z, {4 ^0 u7 B# B
1 p6 |) q  I2 I: G6 [+ K/ `8 Ginitialize-settings

1 `, M9 U6 ^: h6 ]* c& h: z8 R' {/ X1 |/ |, f3 X/ Z( a" ^4 @
crt people [setup-turtles]

+ s) M  ~2 h+ G1 ?- k  O
4 z7 S3 R0 J. {4 J0 U% ]' U1 E% A' nreset-timer
3 ^' d. L  W6 U

6 {0 L/ M! ]" ]+ }poll-class

( x9 y7 T: w' I3 U7 i1 o5 {% F" z. a, `
setup-plots

) p: y! m  W( ]% c
+ l$ ~9 g2 V- V' J9 i0 Zdo-plots

8 }) z! l9 r  y, @4 I0 @1 U3 a3 tend! A$ e  U* @& k) P. r
6 K5 G/ m, K, P$ h" T; D
to initialize-settings+ P* O' H1 h7 P4 k

1 P7 K6 g- N7 O# g, N5 ~7 qset global-reputation-list []
' W# Z/ }+ p, t+ g+ h7 Q

; K5 O3 O( I* L2 Lset credibility-list n-values people [0.5]
) c2 S4 D4 G6 w( z6 R
, n) {& r" ^! y
set honest-service 0

0 v9 K- F: D: N- E2 V# a3 o5 l7 ^
9 }" R2 Q+ q3 h9 |9 Aset unhonest-service 0

" A1 j, t# @) i3 J, d/ Q0 q8 X" |1 x  k7 s0 P. `
set oscillation 0

, x  p* H% W  B# G* K
4 R2 ]4 X0 Z8 O0 o6 K" gset rand-dynamic 0
) }% g9 k3 S' T& L+ U7 g- e/ D
end
) l3 [' w% q* F& z6 L" y' q5 X, k( P+ M6 z
to setup-turtles 1 d9 p9 t$ h( u6 W, e
set shape "person"
7 t+ d+ H/ i. \9 f- E& Dsetxy random-xcor random-ycor$ Q- {9 k$ q! V& D1 ?
set trade-record-one []8 r2 ]! Z3 l4 P7 @
( C. l- x5 J# }; y* k
set trade-record-all n-values people [(list (? + 1) 0 0)] 9 E1 r0 ?) [" U! h" ]7 e# k
2 s: J9 U3 b: {+ n, E: E
set trade-record-current []
5 ^! [+ f1 Q4 @# \8 u6 F) D. v2 K+ Iset credibility-receive []1 p& u: |" X, E. Q. F. M9 h6 C
set local-reputation 0.5
2 ^+ `& H5 J+ N2 i6 Oset neighbor-total 0' f& V/ S" c, o# I: u, z! d
set trade-times-total 08 g) Q3 ?0 @- c+ k
set trade-money-total 0
7 O7 y5 B& F5 C5 F) k- N1 `# pset customer nobody
9 l5 C2 c3 A0 N/ Pset credibility-all n-values people [creat-credibility]
1 o3 m5 M! V: g: U( ^6 q  pset credibility n-values people [-1]
% s5 z! S( z- z' Q9 M' kget-color
# T# m4 n# L7 P# a4 U

% y' \# c8 p5 n& X" b; N, }end
, h' k! g7 ~1 ^% [- I' A: F
. n$ M, l1 q8 ?3 b2 v8 Kto-report creat-credibility% I3 a% ?1 T3 u# I1 e$ l: R* P1 S' m
report n-values people [0.5]) h: ?7 |4 u1 u% ^0 {$ t
end
! r- D. m. r- e" B5 d+ P5 L5 B9 i: H; D: G% |9 i' I+ _
to setup-plots
9 v9 Z% v9 U$ Q8 @
* f6 l+ u3 E) Y1 v0 Y& m/ Yset xmax 30
( H9 X0 w' X. ^' Y9 l
: w/ i! e7 V. I. \: Q
set ymax 1.0

& O+ J- v  p. S1 O# S8 Q5 [2 W6 m9 R
clear-all-plots

3 ]  m  G0 D  j# y& C! ^4 g% o+ P5 a$ L
setup-plot1

0 [" R7 @% m( {% R  S9 f% Q4 F, h. E4 F. M- q% }
setup-plot2

' a% C/ V7 Q" q" M0 c" K( N
5 }4 r9 M7 A: u. l* fsetup-plot3
! b, l3 m$ P  _! I3 x2 C" i
end0 }8 ~/ C9 t8 C, V

9 e  w. c) x) r+ H0 k;;run time procedures% ^+ n) }# U* _3 S0 p

5 m; J) X& S! _to go
$ t- J: V1 H" ?/ i# H  @1 M8 e9 `. @1 @5 \5 {
ask turtles [do-business]
6 b$ t1 k$ Y- `# i' L1 z1 `- h
end
" W7 Z) W) W3 D3 _5 e: ?* g
  |" K; r. x8 i- W, ato do-business
0 t3 K  i) B5 J# S- Z& Q
1 @/ g  U: k: `

0 \+ y- p# V: X& [3 Q' I+ W. urt random 360

( w1 j3 b2 J# ^: Y2 T8 v0 h
5 W) V) \3 l9 J7 m% Dfd 1
9 r7 q' z8 r$ a5 H* ~, ~
' p  H! r& J$ U% `( X
ifelse(other turtles-here != nobody)[

& A6 r! U8 f7 }5 q1 Q5 p" A2 l5 b. {
* F" U. D: R5 `3 r; n- C8 ~1 _/ rset customer one-of other turtles-here

0 N( s. O" W' C' |
8 j2 Z0 h4 u4 f) N* q6 I5 z9 b;; set [customer] of customer myself

+ V# t% M2 i! f+ V& M: Z0 R/ X7 N, x; S3 n1 c' K2 U
set [trade-record-one] of self item (([who] of customer) - 1)
6 Z7 d2 ]- p+ C* A' _6 |! _0 S2 _[trade-record-all]of self
+ |6 _4 q  a/ P9 d: Y0 P4 F;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 M% A/ e6 P# X8 z2 T
1 z9 m9 D$ r' t( [7 k3 c: `
set [trade-record-one] of customer item (([who] of self) - 1)
' R4 m- Q4 d7 v( v: t( V2 Y4 @[trade-record-all]of customer

- x* }, i. }; M( u+ d# O: E
2 J5 U4 s" W2 X4 y9 y! Oset [trade-record-one-len] of self length [trade-record-one] of self

! G) Y2 Q% Y; w, a0 n. C+ k8 \# i3 z) N# N1 e2 w
set trade-record-current( list (timer) (random money-upper-limit))

+ l: m) j2 |& B  }3 V. d! w/ H
  h0 f1 o6 x8 |& \: U5 Kask self [do-trust]; p  a" P( O4 b; K8 G
;;
先求ij的信任度
/ Z& |$ x$ H# S: o# L6 l6 L9 \& k7 |) G( H4 y
if ([trust-ok] of self)
! ^2 `/ ]& B( e2 x9 K1 E7 z;;
根据ij的信任度来决定是否与j进行交易[
) h9 k" m1 G/ q- n; I. Eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& g* u) Q  B/ M5 T

2 r* l- Y9 Y" ?; G, ~[

/ P, u. _! M/ Z( u! T$ n% k
& {% P  r$ _6 e3 W1 l9 o& I( H5 qdo-trade
( A8 a* s* L6 n8 S) Q
8 k7 e% U6 x( q9 R
update-credibility-ijl

. R- X& n+ w# ?+ X5 Z; [
: _& N* s' J7 R- k1 tupdate-credibility-list  d& T4 Q# y( @+ U8 |+ j* I

* ~  U6 q+ o! f8 d$ ^. [
; y6 L3 Z( r2 R" E4 E& x0 ?) Bupdate-global-reputation-list

" U4 }4 _0 y2 M- |7 z- A- R8 s& n2 ]& r
poll-class

; a. ^0 x2 d# |- n/ b. d4 R5 N: e
+ N4 ^: c& M6 F4 ?get-color

( N5 j# S  }6 I! s& v
% |* ]" {) ~" P9 F0 e- S4 ]( E3 C: u9 }]]
* T  K( V% B! w! `) O0 E0 C" O
' q+ O  z8 ^* x1 d9 H# _;;
如果所得的信任度满足条件,则进行交易
& H" W! \5 ^  S5 g1 W/ E) q
% {; S' V9 v. U" J4 c/ M[
3 c' E, N) }9 E9 v. D
" |  ^3 n8 t. a/ w3 W
rt random 360
  ]1 J( A. b+ Z  h) C: D& K
9 \$ K% x- |. {) S/ }
fd 1

! y5 K7 R; E9 s) g" u7 f- G) f4 r8 Q
]

( `# a8 M- C* `8 P" A8 ?, v$ y( z% X5 J7 H
end

0 o4 a0 o7 o" d. A* t7 C( Z# B3 h( `
to do-trust
6 _! k# _$ i; d* Y' r5 s  f1 tset trust-ok False
6 R) w, D1 }4 `- V6 Y. X: N( J$ A/ r8 w4 j. S+ B- \" y3 w' l1 a9 t7 v( D

5 v7 @+ R( N( i! y9 y2 i& u  glet max-trade-times 03 O; @* c5 n, `; j6 J1 U* \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  J. l4 }/ i$ O5 ~6 ]let max-trade-money 0
  v1 T9 B) H% A  o1 lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 {! j3 U. Z. X- I3 Glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ [5 f6 Z9 A2 a: h) V6 I: _+ @# \
& Y8 |" j. t5 Q

% h0 P% X$ V: S3 Pget-global-proportion
* D: ^# h% I0 ]+ jlet trust-value
' y# a% R+ I+ E4 J4 @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)

9 O& E/ P. O. d+ lif(trust-value > trade-trust-value)
9 x3 V/ x! F3 m9 [9 l! u% `[set trust-ok true]
% _4 _6 ~) A% e' y1 J0 c& bend
9 [! {8 W& z* B8 f9 Z
+ C; {3 m3 g: ~: Vto get-global-proportion4 t, C& c* I& a/ ~" P9 }
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ h9 N& o5 T4 K# s# z
[set global-proportion 0]) L! w3 J, w  w! h5 x
[let i 0
  f  S8 }$ k8 @! ulet sum-money 0! A" g& B3 Z! p) |
while[ i < people]& H, g$ w3 u8 }* j& C
[
3 ]* X; ^+ ~/ x+ k3 a' Q/ cif( length (item i
3 b$ L6 P: W9 j- l2 Z$ j% y! w[trade-record-all] of customer) > 3 )

+ V7 r; {- v  f; Y1 v# c[) \1 ^' O4 ~" K
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! n8 S, U5 B' T3 L8 @& N- G9 n
]
# I3 r; Z9 Y2 R- l7 u6 M6 \2 L]
/ c4 D6 R0 T0 U7 G+ klet j 0( ~$ u2 o+ P. t' Z1 U
let note 05 ]: W6 w0 [, I4 ^5 Y5 x0 P$ g
while[ j < people]
6 o; @/ |- t  z, c& u: g[8 W2 W; Q& l7 S0 `+ a* U: n( ]
if( length (item i- l: S3 H5 |5 I) f& a
[trade-record-all] of customer) > 3 )
% J3 Y8 G+ f/ Y6 p
[
( `( C) U1 _  g* _: S8 ?ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  M$ f) i9 L; Y. a; A
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ a6 L( w' ~4 f
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ Z* q3 [7 ^- I) z+ O% _3 n
]: F. l: ]& r3 g% c4 Y
], A, |, q5 c* c( y; G9 M( y4 d5 v
set global-proportion note
; k, Q5 H& i( I% i]  v0 J% [  \( Q  }6 @4 P$ D
end
0 t  f9 d0 z' R" ?! M% p0 n3 D1 o: P6 B) ?- r8 G, Q
to do-trade
0 m; A+ |- `$ \8 o2 D- a: i4 J- R;;
这个过程实际上是给双方作出评价的过程
) q6 ~* {6 Y+ F1 iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 S" W+ ?7 U+ `8 j# ?9 k+ [) ~
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 n3 e. T2 J$ `
set trade-record-current lput(timer) trade-record-current0 t( T& p2 O6 R/ @% f
;;
评价时间
* h& Q& ^. ]% N4 z) Q7 Fask myself [5 G, m; l9 N& q  d- x3 k
update-local-reputation. `" K: X) B3 f3 V9 j
set trade-record-current lput([local-reputation] of myself) trade-record-current
0 K, ]: z0 j7 T7 W9 A]
& h* B/ u. `# C( r& {& Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 t! O' O5 d) G7 ~8 A4 h
;;
将此次交易的记录加入到trade-record-one5 ?" @% E; `2 B/ P; v
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 U& O7 [* |5 n. Z) J5 E
let note (item 2 trade-record-current )) ?- G" V6 l. w6 a/ B6 z/ O
set trade-record-current3 Q5 m! }1 e; ]7 r& \" u
(replace-item 2 trade-record-current (item 3 trade-record-current))

- N4 @) N0 o9 z, Oset trade-record-current
8 \0 U+ O3 F% y8 x5 ]9 a" t& a(replace-item 3 trade-record-current note)
' @& y: _, h. J% L
7 s7 p9 i- }6 O0 o6 X( J

. \3 g4 q% ^) a) Qask customer [
3 C+ A! @. M" U: Eupdate-local-reputation
2 k. A& x7 f& vset trade-record-current
4 |5 k1 ~% p6 F9 F(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 y$ y7 c5 N6 D: D]+ E6 ]) o- k2 F* c# g

+ b( s5 O/ c' d2 k, r& @
6 [8 P/ N  n5 z5 {% ]9 R  x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 I) S( V* Q& \5 l) ?

# z! q- F0 h5 Y. z* S4 i. y8 [set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% @: J. T2 U* ~, _
;;
将此次交易的记录加入到customertrade-record-all* M. Z7 ?  y4 h9 V2 G4 `/ _
end
0 L' ?, @) G3 G, ^8 n! @% v9 j
+ @$ B! H" U0 C# j/ oto update-local-reputation% S# g8 w% W3 f3 L+ l( R& G/ \
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 x: l: j) M% p* h& z2 s% ?/ b4 ~( R5 U& u2 z
+ L. D3 }! S; X- ~7 e
;;if [trade-record-one-len] of myself > 3

: j) m9 |5 G" [3 E  Kupdate-neighbor-total0 Q9 |. W/ J- @' r3 j% h% a9 E& D
;;
更新邻居节点的数目,在此进行
; g" \3 m2 F4 @0 K, Ylet i 3/ ]+ F. R! L6 r
let sum-time 0# Q+ [3 U' `6 r3 c2 B. X9 ?2 ~
while[i < [trade-record-one-len] of myself]0 z* T# m/ ?  `. K
[
* E) b  v( {; z5 `9 bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 O, k( [3 j8 q  i- h) s
set i
8 S7 m$ g, p) x/ l3 v  P, s( i + 1)
1 }, E, ~" S+ D% ]. V
]; T4 @8 [6 I4 I# t
let j 3, R( ?5 s5 a7 y0 ~& Q
let sum-money 0
& m; ?8 N4 S0 _, _7 B: _+ ~0 P. kwhile[j < [trade-record-one-len] of myself]: X5 \! M+ N# V0 D" N' _7 X
[
4 a9 @* n& a* 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)
/ I1 j! g6 h! a  N& ~' iset j# y; x/ N" I) u4 }3 V
( j + 1)
( F# a* |7 Q; ^# @+ n7 a
]/ m" v$ l; P1 }
let k 3! g# q8 S$ N6 V# ]* S* s& j) d
let power 0
( o( x! N+ E: w: klet local 07 n  I: N) x2 M3 Z
while [k <[trade-record-one-len] of myself]
: [6 o' E, \' O( h: m# u" S  ?[
/ z3 b5 P; c7 J- p' N9 Qset 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) . K: ?: H% X: _  i9 a
set k (k + 1)8 n$ g4 `5 n/ f+ g/ \9 N+ \! u
]* t0 r8 r8 L. t
set [local-reputation] of myself (local)
0 L- S8 _8 s9 k* l% F# \/ Zend
; w: Z) V+ f- u' C
- T3 y1 ^4 x4 x2 y. |9 `  Z5 O# bto update-neighbor-total
' T2 @3 U+ S2 x' i2 c& c4 x) g0 o2 i1 g6 H
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' F4 F4 o+ v, b: ^# w  Z, p
5 p( Q- ]: \' o4 v4 R7 w

5 a  h; X7 q) dend9 _$ U$ B1 m& H) x6 g6 W
! A  V, d/ L. V" r
to update-credibility-ijl
  E# `1 @0 s* P2 _3 X7 w7 c0 N* r, T* 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。
+ o& y2 s) d2 n* plet l 0
4 X) X4 R$ M( p  uwhile[ l < people ]
4 |, h, E: K. n0 h& w, c;;
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  r/ Y/ V: N5 K
[3 t* @+ G3 D/ H5 c, t& G) Z+ A: B& b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% v% ]! M9 F6 p* C6 gif (trade-record-one-j-l-len > 3)6 L, N" n6 q/ ~0 l" w6 P2 q% z3 ~
[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/ d3 u0 C$ n# p
let i 3" ]! `9 ]- H  [% q
let sum-time 0
. V6 {& ~+ X0 v% V! N6 t. swhile[i < trade-record-one-len]& [9 }9 m) O- C( \9 i" y
[" p) S* G, w% b9 j" i1 z$ u
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# B% [4 w+ C* u* V- B) C: m
set i
4 u  }: a$ ~3 y; ~( i + 1)
3 }& z- c3 h, P' d4 v" x
]
1 O, Y! y) U  R& h+ \5 j. Q  o2 b3 Ilet credibility-i-j-l 0$ N3 ?6 D5 U  Q3 j9 G4 z: R
;;i
评价(jjl的评价)
* k1 r* `* f: D* e' m1 i* Alet j 3; Q' l* j3 U  T8 v
let k 4
. d( `+ Q* P$ F' Kwhile[j < trade-record-one-len]3 }! A9 q, k- @1 ]" |! L
[* i. ~* A. c  P: I9 T' O
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# {  k1 d* O8 e* K- ]
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)# [9 M3 S% B: @2 L" e
set j' J  B4 E# t. ?( i1 S2 J
( j + 1)
* ^6 ]5 P4 g  F
]
2 _" }: C2 d! P. G8 s) s6 V) ]7 G9 W, jset [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 y9 C) F& @7 ]6 U2 |

. {9 S1 K, g% I# V* b9 M1 z8 I8 S
$ S: z1 B+ j& n# \
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 y+ J9 P' J4 S% {;;
及时更新il的评价质量的评价. C1 @1 x( s" I0 K* M* ^7 Y; l4 V% V
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 a" m( c5 Q$ t- i0 D$ c& q! ~set l (l + 1)
" b6 t( e6 T- m! n0 U7 f1 @]
% }& N8 P- t3 g4 j; F7 r! [! kend
- E5 a: a" e  q+ m; B
# P; L6 X9 q- tto update-credibility-list) a9 }) H& G  F* M
let i 0
9 d, y3 a" D0 Q" K5 o8 K( dwhile[i < people]
: E6 |* D. ^( q/ r% S- d: q/ ?[
& N; |2 Z1 |& r* g- r8 [( }let j 0
* M6 D4 j1 S0 q- |; Hlet note 0
& j$ W4 K  a: j& ^* o3 j) [, slet k 07 Z3 w$ x6 a( ~: I! j7 P3 z2 T9 Q8 e
;;
计作出过评价的邻居节点的数目
# P& [" K: z9 E9 u' w5 Gwhile[j < people]
( p7 s  {4 v! _4 z% Z[
  D/ k1 T' t" v. h: Vif (item j( [credibility] of turtle (i + 1)) != -1)
# X* A- v* J& j* g4 a;;
判断是否给本turtle的评价质量做出过评价的节点( j- `+ L4 n* B$ Y) p. {
[set note (note + item j ([credibility]of turtle (i + 1)))
' R, I" k/ b( S) |% i* h  I# ?;;*(exp (-(people - 2)))/(people - 2))]

: V% K! m) ]7 hset k (k + 1): y1 `+ x$ b/ i8 t! C- }
], }0 }& S/ y1 g5 t. m- v
set j (j + 1)
. D* ]" A; t/ d+ o. W]
* ~$ q8 V  a. U) P7 y% A. r! f% [! [set note (note *(exp (- (1 / k)))/ k)- ?1 O. y! \+ ]- t( J" q
set credibility-list (replace-item i credibility-list note)4 Y* O- e, h( X6 w8 P
set i (i + 1)
7 y0 z5 }% p7 k2 O8 m6 w]
6 @! P. H$ O1 G0 S5 q: S) ]end+ u! f, S) K0 T) O

8 f3 A$ r. K# J7 m5 N- ], _8 w( Pto update-global-reputation-list
. a1 N+ |$ U: o& W% Zlet j 0
, E: s: Q% h! D/ uwhile[j < people]
2 V, r7 l# y) v  P[( j6 {- c' x- l- u3 l: n
let new 0; c/ a% Y4 w4 {6 B, a6 |
;;
暂存新的一个全局声誉% c1 g' s" y0 H* f) }) g  l
let i 0
2 B5 Z5 A0 O9 clet sum-money 01 e0 X8 z% E) H4 m7 U6 Y" x2 G1 V
let credibility-money 0
# ?- {# n0 g% ]$ i: [+ W9 ywhile [i < people]
- z% u3 d6 [5 A[
: R9 x# t8 U4 S! I# p; r" F  }set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* {+ A2 r" q" w# Z: E+ Xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' }1 X  h0 p, V  E9 {
set i (i + 1)
7 {2 d2 x5 R( Z5 Z3 ~* ?]  o: l9 P# F0 e) j
let k 0
! ?/ y: d# y6 M2 }/ l3 l+ jlet new1 01 C4 y: p, K$ N2 ^
while [k < people]
9 z, ^+ ?) G3 R$ P[2 v# p9 n2 b1 S  Q) w+ Q; P* P3 a
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)- N$ b+ w" b9 g  Y2 r
set k (k + 1)
8 G+ D$ ]. u+ k% i3 I& i]
$ ?) p! e% o  Y9 l% Dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 |- o# m( L0 U0 q3 g) ^set global-reputation-list (replace-item j global-reputation-list new)/ Y$ q$ e# |  j, Q
set j (j + 1)
6 }, [8 @' Z( r+ B8 m6 K]: u  ?$ ~5 @( B% K) O
end
: I% U6 U/ l$ m6 v% V1 ]9 I0 |/ o

! ~' w; O# t' n* N2 P2 C' B& r) l/ x, `& ~1 Y9 V2 ]/ R
to get-color. p+ J* h$ ?) h, M2 V9 ~) [. z
2 s* A) h' J9 H
set color blue

& \+ v# J" ^6 Y& D- E7 u* xend- h% \8 h; q: n# ?

1 u+ E" n9 _% E3 q8 _4 f$ \& J$ Rto poll-class
4 M- S% O( B7 l" V! Q2 wend$ n, ~& i- ~6 L) \- G8 O% a

) Z& q7 g6 l: [! M# b0 yto setup-plot19 c; P! V2 v7 T  Y9 I  P
$ H. s( t" ?, p! P3 X, G* ^
set-current-plot "Trends-of-Local-reputation"
6 X+ U8 i% w  R( D# P' T
/ x  `5 l' C2 B7 b" g
set-plot-x-range 0 xmax

! _3 M- ]: J3 y5 w5 N5 j+ C# X. A8 S( L* _  @
set-plot-y-range 0.0 ymax

- L5 @/ P' N) D" \& p  jend
# s2 E; _- P' a2 X3 N7 R2 b$ z- ~( T
to setup-plot29 t/ o* J) x# ~( c! b
/ j! Q& J2 X3 O0 o
set-current-plot "Trends-of-global-reputation"
& Y7 d7 _3 @7 ~1 l3 j% ]
; |' g& R" S: V) O
set-plot-x-range 0 xmax

, c+ o9 M9 t3 ^4 r( W  p8 z
% B1 q5 V0 S3 r6 {" Iset-plot-y-range 0.0 ymax
6 i6 u2 \0 p6 o) N3 D8 F6 Y
end9 F1 q* {' X+ Q
* k. l1 C, c7 n' z8 h
to setup-plot3
+ U2 C8 B. [. R. a4 X8 W
8 q, I' a' H8 Z: q; x! Rset-current-plot "Trends-of-credibility"

9 s, O& z5 O" c9 }5 d
- E8 O4 F8 p$ wset-plot-x-range 0 xmax

" Y; F1 {  Z1 l1 o  W8 d: r7 A& W  X1 o  H5 b
set-plot-y-range 0.0 ymax

$ ^+ s/ w6 s3 J4 {& j0 K% G9 j. mend
! U7 a9 M6 f" j' o
8 C# C- n% I) i, j# Pto do-plots
3 H8 m% v' D8 w+ Gset-current-plot "Trends-of-Local-reputation"4 n& p& H% @4 t* n; _
set-current-plot-pen "Honest service"2 y; h, Q9 ^- L8 s
end
8 m5 d' e  w2 K6 r7 V* U, [0 R- m5 p, }( `" Z5 w5 ]
[ 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.
. m5 \( z) z9 `* I. i% l
0 _! N1 G9 U8 J; P0 n) x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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