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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:2 N1 w$ r$ J+ N& F1 ~
to do-business % q, g; L7 z8 G9 K
rt random 3602 N! Y$ T4 f; ^' B3 ?& o
fd 10 w' ^; K" j- n) ^/ m
ifelse(other turtles-here != nobody)[  e0 h) L1 C9 L, c' d: S
   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.
" @. O0 o& `9 c+ n3 e, R' k   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  V9 o+ i. C( K   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 |! G3 s/ J7 I4 b, `# r" o
   set [trade-record-one-len] of self length [trade-record-one] of self
6 f) b* B$ E5 F   set trade-record-current( list (timer) (random money-upper-limit))6 D' z- ]' N! u* c3 c7 n  h
6 R; j. |$ K# o4 K4 ?7 K% l
问题的提示如下:
# ]% {9 C6 `+ K; }8 x$ P# q
5 @2 }+ m% e- e" ~error while turtle 50 running OF in procedure DO-BUSINESS7 W4 \  Y2 Z7 B: W9 t% b6 H) Y( t! p
  called by procedure GO( {; s; `  }* O/ [: |& U4 ?
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 G' ?' Z+ ]4 }; j. P
(halted running of go)
- M& U2 |* m& G7 Q% [; M* K( k' K
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~~5 M, D& P, B/ |) ?0 Q9 |5 S! k1 D
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 @9 f& G) A% o4 R5 c
globals[
9 P5 b! g6 v3 y. lxmax
3 S! X. a) }2 Y, x' f- Nymax  M: y8 t+ E% J2 z8 n; {9 \
global-reputation-list
; j- K( }2 Z: b' Z! H+ q) I: F2 X( I4 |
;;
每一个turtle的全局声誉都存在此LIST1 z& i) P, |" ]( e2 O6 q% M
credibility-list
; L. R0 x; H- F! R( I' };;
每一个turtle的评价可信度
. }% p+ M' ?' C4 K* U5 W& j* chonest-service6 J' k8 p0 p0 f  x
unhonest-service& c+ G. Q) m  M4 \7 Y  |: J3 c
oscillation6 I6 R6 W6 O8 ~4 ~- d# v) Y' h
rand-dynamic
& k: T# R; P- d$ Z# \8 s& O]
1 F8 v. O7 O+ U8 k6 T) n1 P$ @: \2 H& P/ c4 W+ L
turtles-own[
4 \! W$ n0 D9 Q5 B% q: Ftrade-record-all
( t/ m& |2 V! E# p, e;;a list of lists,
trade-record-one组成
# s  D' G5 O! D/ a7 ytrade-record-one( ^) O6 l+ E; D
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 H( Y0 o8 I) t8 f! H, o$ e
, G8 m$ |3 Z9 O4 T' 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]]; E/ l0 W. U9 p5 P! c
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]: L' J3 |) S, D, O0 {
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
; y/ I" b; ^6 b7 Bneighbor-total
6 G6 C" A3 u& _: y- N; K;;
记录该turtle的邻居节点的数目
( [4 k% u5 j. z  O/ G: Ttrade-time6 e; n5 K. W/ N, Z5 N8 I
;;
当前发生交易的turtle的交易时间
& g  k4 ]) W, ?) j6 L+ S* l6 V/ oappraise-give; \2 {' ?' x' ~( O% O8 T5 [
;;
当前发生交易时给出的评价/ i3 P5 V5 @, a/ O9 y/ l0 [
appraise-receive
' w4 |8 k) L8 Q" {;;
当前发生交易时收到的评价+ T  ]7 D% d: v  _1 ^5 t
appraise-time
& M& x0 f+ P) D;;
当前发生交易时的评价时间
" t3 t: t" x  I2 ^: s3 f5 R- Zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 J( f: n0 o7 k: N: Ltrade-times-total
7 p& b/ z+ x  M( J5 l;;
与当前turtle的交易总次数
! M, n6 w+ N* q, w: \trade-money-total4 _/ f( w4 a  ^' T4 U
;;
与当前turtle的交易总金额3 g1 K; }+ S2 P. m0 {$ E; p
local-reputation. G6 l0 f6 h4 l5 ]
global-reputation/ H- ?9 [7 ^0 V7 @7 ]
credibility$ I8 k5 m4 c+ m. f: y3 R$ H
;;
评价可信度,每次交易后都需要更新' I2 Q7 k% U4 ^( r/ ?- _
credibility-all
% h1 w7 K. u2 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
! v& |$ W: Y7 ?! X
4 S7 @4 k6 H6 J# j' F& x/ w; |8 f;;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 T' N  C0 ~1 c9 p' Q% Z
credibility-one! B; l  B  s, s: K
;;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
: }% s% Z2 F! g/ o8 m6 a9 g/ D8 |5 Fglobal-proportion
! |2 B  ?* U- j, G5 jcustomer
( I; Q7 F5 ?* t1 F& o5 R0 a% f  Ocustomer-no
  z6 H5 ~* O% \1 e2 J, l# L) ~1 btrust-ok
: D( j" |  S# n4 ~8 W$ @trade-record-one-len;;trade-record-one的长度
5 m( g, J: }; H- z/ g8 N]! A) Z! j: g1 w# A# x  O
1 \  }( s& I, l, _# w
;;setup procedure, Z+ X9 f- ^  v& a0 B% q

) X+ f' x( v) N% |# Kto setup
4 `5 O" T! ^3 ?: }: u5 q. s3 p! F4 I3 a
ca
, Y2 D" X+ b9 T

3 E) o- h: C, ~+ N  J( jinitialize-settings
) ~) F( p  o- d5 W5 R+ b
7 I' [: Y9 l. Q
crt people [setup-turtles]
3 e0 b& g+ R( X+ R5 L

* Y# j+ e9 J0 [6 O8 jreset-timer
& \5 @/ d- x; \8 ]4 N! }

9 |5 g0 t! O8 f/ G) Z& Jpoll-class
/ v2 W1 c1 [3 T+ q* }  R2 V
# n* A. E9 a. _
setup-plots

7 Y" F- J7 U2 i* @5 g, X+ w5 P2 }* R
do-plots
% o9 Z0 m' b; [  z6 ]* g; H5 p
end
6 `5 Q6 P: e5 m+ @- z& n% k; ~
1 e1 d; I+ P1 ]5 ato initialize-settings6 q- \6 u  N9 I. K
8 T0 a8 U( T' K5 \2 j5 ~
set global-reputation-list []

! s' W2 A$ q" f; z8 k* w% g3 p4 T& i
set credibility-list n-values people [0.5]
! u1 ^& L# n# V( R# M( B# a" u

6 ?( J" z$ b0 {! k9 k4 I- [set honest-service 0

) I3 [0 Q+ D  [9 S9 l( s$ ~
  A0 b- Y" n8 N# V$ y( Pset unhonest-service 0

  O9 T6 s0 T: y
0 d. G+ s8 |- [set oscillation 0

8 V; P0 C4 G* _1 T8 q
! P6 |/ X+ ?7 ^3 L& \set rand-dynamic 0
9 ]$ G9 I! r  ]3 H# r$ D
end) b; M4 s# c) p8 u, c. b0 x  n

' K$ {) j; C2 ?7 K( N+ i0 t  mto setup-turtles 3 {; u( @8 x! r- [
set shape "person"
& q. O/ i" _' b8 ?0 A+ F0 L, }( lsetxy random-xcor random-ycor
! e. u. [7 P0 D/ i6 @set trade-record-one []
3 q5 k6 L4 G( O! \
6 Y3 u) M& A& v) l" V
set trade-record-all n-values people [(list (? + 1) 0 0)]
' K* Y& k2 S! L5 l& _; H

- E( J& X$ M& x# q- ]& f+ L3 aset trade-record-current []
% v5 H8 j4 ~- P4 iset credibility-receive []$ p. v7 j& G& P1 o0 I2 I
set local-reputation 0.5
) _2 L6 W, P' k8 w3 `# a3 qset neighbor-total 0
* w  m6 J4 y9 c- \set trade-times-total 0
7 {  V9 I, q. p* r  t+ ]set trade-money-total 0
2 y4 r* x" s) p, `! vset customer nobody8 \4 W$ E; i: ^9 T, u5 X
set credibility-all n-values people [creat-credibility]
9 i0 Q3 F4 a! {. y- B! Y5 C5 P, ^set credibility n-values people [-1]5 c. l% f+ [9 o; G0 t' O5 S; U2 `
get-color
6 O+ g; |& D2 `
# @, @6 o3 ?( [) m2 i  i
end
9 X; }+ n6 k' N# ?) j1 F3 R
9 ?  @7 B' \7 B8 t- o# ~( k5 U7 Oto-report creat-credibility  n5 L6 a8 ?7 z" x* Z; u/ ?- _
report n-values people [0.5]4 |, Q1 h# X, T; \1 y
end
2 v, O6 Y* N, G
1 v8 q( }; `6 r& K% lto setup-plots
( P) Z4 f. P. h% z, ?. o+ I5 W% e8 `0 U1 {9 x
set xmax 30
* m: @: e# c# v- d$ D, O
4 f, j; F4 N: j' H; Z6 `
set ymax 1.0

7 a6 Z  p* }2 m: |. H( M+ e4 c' x; b" X  v$ j
clear-all-plots
* n/ J6 }4 _. ?+ g( r" S& Y
0 {( k- h, y$ Q5 R
setup-plot1
) ]7 y* @, z' \( m
  Y: y; U( V( j5 N
setup-plot2

' J# p0 B# n/ Q# ~7 H8 R9 P8 i7 q" w! H+ `% e4 n4 O+ A
setup-plot3

( H1 B# N+ a- I, O/ w, X3 Lend2 g' j1 E# I, Z* k7 @, L" H

( {# I% r) |- e) P9 t: M6 B;;run time procedures9 p/ J3 @) v( A* X" X# ~0 A

+ q5 \# \' Q6 Y" Z% s9 Gto go' v0 C( e. y! Q5 e; p

; ^1 ?: d& ^. v# X; xask turtles [do-business]

* G8 K, }! i# v" {1 @end2 k( N. D) L( S+ @5 t

7 T& H. }7 z" W  {) ?1 u7 ]to do-business " f: _+ c; k' g% I; w% o9 Z
: F2 G0 |& |' g6 Y1 c& A1 ~
: X9 ?" Q. V* a% z( F" l
rt random 360

3 p4 }  Q. @/ T, d, s! R# |) V! P$ k8 R% n5 |* G* K! Y, e
fd 1
0 b* N5 ?! r" W8 m  a% K8 X2 h$ O

  m1 J  L- K% v, v2 z2 m: S/ Eifelse(other turtles-here != nobody)[
: _4 g  S8 _6 ]# c
9 e5 j+ ]2 [3 g6 K) a- W
set customer one-of other turtles-here
1 j, l7 S& @# v

% N" \' D" V; m$ N1 A3 [* o;; set [customer] of customer myself

  O8 K+ e0 N7 V  r1 X+ }* O9 Q
8 u* k0 _/ o9 `1 ^, k$ \set [trade-record-one] of self item (([who] of customer) - 1)
) {" F" {/ M- U1 R; l3 Y0 k# O[trade-record-all]of self) R8 P( m& a9 c/ `9 }
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ |4 ?& k/ Y. h( |* l% n) o: Z- x8 M+ W6 D3 c! A' a# r9 D! g
set [trade-record-one] of customer item (([who] of self) - 1)0 v. r. x) N$ h: G/ m, o; n* H- _
[trade-record-all]of customer
. P4 A# A9 l# ~1 \( H  o- O

* X* v1 u8 k% \1 tset [trade-record-one-len] of self length [trade-record-one] of self

$ c- M7 R+ M: w0 U9 C+ ?2 N+ y1 ?; X
set trade-record-current( list (timer) (random money-upper-limit))
/ A- |% _% c0 C5 }; T# b  t& c
$ K9 @. j% _$ t0 Z( I2 Z; y
ask self [do-trust]2 V$ _% g; `/ x
;;
先求ij的信任度
$ A+ w+ g/ f7 ~. d: Y" m& D
  ?' T) Z0 L3 g3 `7 v5 Jif ([trust-ok] of self)
" e  r, d6 Y! L- N& k5 N9 E  j& N2 b0 \;;
根据ij的信任度来决定是否与j进行交易[
. P5 ~  z; u6 q$ {/ o2 oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 _6 Q* U$ Z: N& m/ j5 E, P* F+ X! e% `' j. `+ ~/ _* w
[

; `$ |0 B8 H! t. m2 ]1 h0 \4 w$ w! H5 g3 f. y+ a
do-trade
5 t* H. S' W8 Z/ k; h1 w
4 o5 {8 E. N* t( @' K3 Q8 t
update-credibility-ijl

/ E* ~' j  P+ r. X" J
% ]5 w* H) `* W9 z" g" P  Jupdate-credibility-list. ^. ^7 x6 C( U: {+ T

, R; t* a- T% Q' G1 i) D8 G3 W: @$ k( X/ w
update-global-reputation-list
7 \8 }3 S- X& v) ]5 D- C, d% G

) Z8 p+ z$ K" C! N$ |& Hpoll-class
6 e- p$ Y: j! @3 h9 _3 C! J
! c% j8 M* o8 ~; ?
get-color
+ G! X6 c8 n, l9 h+ @4 y# X

7 O8 M- i* n& X) v& r]]
- j$ C1 `1 J1 h4 _3 H. r5 _. u; G/ y& A+ ]. r6 Z
;;
如果所得的信任度满足条件,则进行交易3 u1 F3 @7 i: i8 G* R5 P
! y3 m. g: x9 `- d, |
[

1 U% c0 Z6 A+ K- g. v& S0 H7 b/ F: M, I0 [6 y
rt random 360

) |. \8 d% c( b- v% H$ Q
2 `8 c. G1 G& @2 n6 @5 Yfd 1
' g; m) Q0 t: G3 ]/ R5 B# ~7 U. F, E, o; P

" M7 `4 ]6 |; u9 ?3 \, F]
$ K4 ?: T" U5 X6 s. l

! s& t3 U* U- Vend
) g3 Z2 D, J9 V% u5 N& [
& g: g) W7 a: q6 U, T7 F6 R
to do-trust 3 `7 U' y% j; O( X/ R
set trust-ok False5 K) D# N" o) ^

: ]* |) C$ ^6 i8 s8 X5 o
+ y, U- \2 E/ ?" o! m) ]
let max-trade-times 0  }' R% r1 a5 v- I3 _6 E" g9 Q1 u
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 j( U. `  W2 L* I+ Z- n- R
let max-trade-money 0
) y9 y; H( z6 \$ ]/ }foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 d8 m9 ^/ H, I6 ^% y, E9 p1 R
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# T6 j' `# q8 r3 V9 h# ?6 ~9 ^
- Y; J+ H, Z) g9 `

5 g6 A2 W4 t* L/ o; Q( z. Wget-global-proportion' h# s3 \& a  A  D  U0 M2 r& {/ t
let trust-value4 f9 w4 c1 u. V$ v0 D8 R
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)
: b' r0 t" |2 S9 ^  k
if(trust-value > trade-trust-value)
$ @: J7 `6 e  O4 W2 n/ E7 o[set trust-ok true]
. @2 ^$ e' `9 F7 D) B! R0 vend
- v* R/ J6 Z: u  G/ B
4 k5 U; v7 ?4 C- [to get-global-proportion
5 y; i0 _8 l8 f/ p6 G, ^2 {ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)& Z3 }/ b1 u; {) B; P: v
[set global-proportion 0]# Y* p1 ]2 l  s% C$ x, i1 f
[let i 0
/ V6 P+ O* G: H# w, wlet sum-money 0
8 ?, N- @9 \% o! T. G: k' N- Jwhile[ i < people]
3 y2 B  Y# G$ t0 s( E1 b[5 q; a+ [4 k6 X$ X" d! C. ^5 M  c
if( length (item i
4 k: I( ~& J$ k2 f" {# W% H[trade-record-all] of customer) > 3 )
9 C; D& q" s% i2 |$ O( y4 x
[4 w; e) C5 L0 g/ N: V
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 m. Z( ^0 o$ U3 P]3 N: I4 E- f2 q. G
]" a( j1 J( F9 ]0 L$ k
let j 0* b1 Z) q0 Y8 D4 \; j
let note 0. Y% T# C$ P& M5 F. ?  N( m2 [
while[ j < people], @% [7 D# d1 F9 c4 k3 K
[1 O/ H# |& \" n% _! D! m2 F0 |
if( length (item i
) ?+ O, b$ }- n7 U& X' O5 P[trade-record-all] of customer) > 3 )

5 H" ^% I# m8 R/ H4 h[& `( G7 ~+ i+ i8 G
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- i( w; h+ {" ~. E
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" y( T0 x5 J) _' `4 \0 `3 s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( [) e# w) _8 P7 |! k
]8 O4 ^) h2 N' ?
]. U) s  b0 D/ x! P
set global-proportion note
& ?$ i' f: v8 g/ s$ I' y: }]
1 ~, F* x5 i1 ?! oend
, R$ y2 ~) F7 @7 @
) L' u% v7 v; R% C0 b; t& Lto do-trade
8 t: w: \' n2 Z6 F;;
这个过程实际上是给双方作出评价的过程
0 U: O3 L8 z. J2 C% i# ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, ~) X# n% B" {+ h' ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% s6 G$ Q1 e# g4 L5 ^
set trade-record-current lput(timer) trade-record-current
# W: b' }) `: C3 |; |5 O;;
评价时间
6 `: s7 k+ |9 s, [: Dask myself [
  C2 R+ l- e! d* tupdate-local-reputation
( N: P; Z7 F$ a/ }: Hset trade-record-current lput([local-reputation] of myself) trade-record-current6 P/ w% i/ l; t0 f" ^4 ^
]
: E' U) |3 e2 X( c! dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ s+ \6 z7 q' n6 E0 ~- G
;;
将此次交易的记录加入到trade-record-one
; U9 Z, ]$ f1 a* Qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ k" a% r' J% d# Y+ K/ y
let note (item 2 trade-record-current )
; E+ ^, p' g  X9 h- iset trade-record-current
* _8 j' s( O5 l$ I(replace-item 2 trade-record-current (item 3 trade-record-current))
" Z. x6 A1 r; _9 e  _
set trade-record-current# w7 X( P8 |) m% a" ?7 O  i$ e
(replace-item 3 trade-record-current note)
* q9 {& g& ^# K# }% t$ n2 j" m  C8 _8 A; c

1 N7 S- t2 M' dask customer [
* ?' m& g* G3 t" W$ n  t; uupdate-local-reputation6 J+ ~' T- ^5 d) W& w  A1 b3 D
set trade-record-current
$ g% n' K2 k& r1 o, X. e(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 I- d. W- h( r1 |- c
], {8 i4 u& b! B0 z8 U6 c

* n7 U# o4 M* }! I$ w) o
- v4 I7 _  i5 e: F0 ?
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 }, I6 ?4 _: Z/ _

& Z4 t5 T* x# \$ A+ v9 Y% V% Z0 }set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ H: Z# F, Z& i: N  ^;;
将此次交易的记录加入到customertrade-record-all6 O: O! Z2 A7 f0 F) r
end' i3 R, {! |' ^8 m+ J

% W/ d) f7 G$ I+ Q/ w. Oto update-local-reputation. z% F- r( b5 X$ ]
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ }' p" q9 I! h; z! e2 E6 E4 J9 C
% E* O' i- u' j! Y3 n, s0 ^# Q" N- s6 i
;;if [trade-record-one-len] of myself > 3
: d% v0 g, w" F! n) a9 @) C5 [/ _
update-neighbor-total
% F1 f8 I9 e: ~( a+ O: W;;
更新邻居节点的数目,在此进行
7 A1 h, i+ I4 n! r3 X; K; R% Glet i 3
4 {- L. U& c$ K3 klet sum-time 0. V' J+ l/ `2 G0 z0 ?
while[i < [trade-record-one-len] of myself]; |1 o' p+ S6 _  _$ z) c
[$ t2 T. R. `1 ^$ y, K; X
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% c7 `& B- V3 D# H
set i
, ?( n2 y. `; F( i + 1)

7 ?* S! ^( `  g9 R]
: q, X# p: X. U* Olet j 3/ `0 V, J+ r0 O8 i7 F; X
let sum-money 0
- k2 |& x* W, N# nwhile[j < [trade-record-one-len] of myself]
0 g* l& l8 C% X1 x1 {7 f[: o1 D+ ]$ a  W
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)/ C3 u6 x$ H# o6 r; N) C3 U
set j& b; {1 n( C5 ]& M: r
( j + 1)

$ V+ K; w4 ]+ N7 G. e% U]) L  f" x8 T8 g2 V4 V" L% j
let k 3' Z4 B' Q1 p% C7 \
let power 0! S% |6 S+ B# v* P
let local 0: k# a  z& G0 {5 b& F4 @
while [k <[trade-record-one-len] of myself]
$ I% Y9 x3 [, \0 {! Z4 [: P6 b. a[
, w* V  d+ ?/ e0 f' J( E4 ~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)
6 z/ P/ O0 g: n( Uset k (k + 1)
* ?/ v9 D, }  D% O1 k]
2 r6 a! D: q0 oset [local-reputation] of myself (local)% K$ @2 q! r; \1 g) N+ ~$ M
end
4 _3 @5 {: P5 T  }4 ?& Q5 P9 c$ H
to update-neighbor-total
: w  U" c9 \' L+ \) c# X% G  F! ]& ]
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" ^% C# y6 F# A5 S' }- S# F& j. C* K' @% s* G9 U) H- z

! p  S( |8 V6 qend
+ o( b1 ]7 ~! ]5 }# o0 D
+ H8 f, p4 ^0 b9 \6 a" Wto update-credibility-ijl
: {* f: O0 m- H" q% X
8 E& m' S' o2 @1 I" O/ l2 G4 |2 O;;
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 R5 b9 `: g$ s$ a8 I0 Z
let l 0& ^. g9 M9 v& `; z5 S
while[ l < people ]
- `1 C' J3 |$ j1 \& d$ ~  \% b;;
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
& ?' e/ x% ^8 ^[& W6 G7 L9 B& W7 _$ v7 P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ s/ d2 f9 T4 H* P, V
if (trade-record-one-j-l-len > 3)- k4 I& M( O7 ?- q$ {
[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; L1 T1 K8 J8 |0 c& R# a, Z
let i 3
( d5 m: r0 N% X$ J) Plet sum-time 06 n( o# ]5 ]9 Z8 y2 P
while[i < trade-record-one-len]
0 {4 ]9 G5 [: {* G[
. s& Q2 r( E9 {set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; D& T; |3 w/ R5 n  V# E# _. H+ Uset i
$ T) V+ Q; v. D, H" C( i + 1)
6 p, t( k, w/ p: U, r9 d8 K$ ?
]
! L; j- W4 U+ C7 t0 Dlet credibility-i-j-l 0$ C; {6 P' m+ l8 H7 L* m
;;i
评价(jjl的评价)+ ^2 p9 C& n5 C6 t+ R( f) [7 Y
let j 3) |# G: f, K* Q- R9 h% d
let k 4. |2 F+ O) }+ _5 `- i+ l5 H
while[j < trade-record-one-len]
" b8 c4 A5 {8 R9 U% Q- I. k& c: {/ k[: E: D# _0 \) |2 s7 d: u
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
6 S" ~4 D9 h& z: h5 \" Xset 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)
! p" |0 E1 j* R4 J+ yset j
. e+ @. M& _8 O9 B9 p6 O- S4 k( j + 1)

/ f0 j. |  Q4 R( D$ D$ A; Q]
* e: e, ?4 E' y: a% p4 tset [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 ))& D: P2 }; `) R) u4 W& R  F# X

5 B( {$ ?5 r( Y
+ W* [& u1 R# v/ q9 w* t( E" Q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); A. F4 x% K7 U( {
;;
及时更新il的评价质量的评价
  j% E% T/ g7 ]3 S3 o: `3 Sset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: A) b" t; A5 T% x! [9 \
set l (l + 1)
( t7 u. ~1 P8 J' ^# P; z; \]- `0 j0 \" \" b2 a0 k5 J
end
$ b8 b6 i2 G) P' N8 d3 C
- J# q$ T# _( L/ A- B; rto update-credibility-list  g2 j4 z+ o5 D9 ?& \6 ~8 C
let i 0
/ {+ U8 r$ ~6 B# ?9 Pwhile[i < people]2 P: ]( @7 F' D+ }6 B
[
$ @0 `) P" g) u1 b4 h+ zlet j 08 U5 P* W3 x) O1 v1 T+ z
let note 0
# u5 F; y+ v4 }let k 01 a( W5 h9 }9 Q1 s
;;
计作出过评价的邻居节点的数目4 A+ j) }. k8 \0 o$ t' F, A" G6 D
while[j < people]' v  L$ ^; H* K2 u3 Q9 ~; t& m3 n0 i3 V
[
1 |; L+ N  V: y$ O4 Sif (item j( [credibility] of turtle (i + 1)) != -1)
8 t3 P+ |- S' O* ?# i6 v;;
判断是否给本turtle的评价质量做出过评价的节点! |: `7 K- j+ N, l1 |2 L5 ]! z/ `
[set note (note + item j ([credibility]of turtle (i + 1)))
6 A$ W( `2 h. j% d# c( ?2 K;;*(exp (-(people - 2)))/(people - 2))]
& u8 O/ @3 ~' n4 G1 ^6 i4 c; X
set k (k + 1)
4 c4 Q. I9 r" Y$ I" C  A; o; F]5 s4 X6 M+ H5 U! Y0 b- _1 q
set j (j + 1)
: g! q, ~- c, y  o8 k0 k]" w4 q) ?: `/ J1 U$ e" P% N
set note (note *(exp (- (1 / k)))/ k)& J) [9 i; r! m! y, I3 x+ ^4 `1 g
set credibility-list (replace-item i credibility-list note)
: m8 K1 P* Z  g) ~$ A/ Z, {set i (i + 1)+ `8 C, S. Q% V: `! O
]
) `" Z% z- |0 S2 ?+ z8 C) a! C8 fend: m: N2 `1 x0 \$ K+ K

9 c" ^$ Z: x# j9 Eto update-global-reputation-list# I) k4 w0 `8 M. n5 N6 u, I* q
let j 0+ m1 D+ ~; ]- d1 M* b
while[j < people]
3 F; p+ s, T3 x+ H+ n# S) i[! I; _8 z4 {, {: L3 B! D+ X
let new 06 ^( d. J; ?) z$ V& b$ M
;;
暂存新的一个全局声誉
  ~  `% F$ c; S% k; _7 ~0 D8 Z' Rlet i 04 J0 r3 w" _8 h) B# T* |: u
let sum-money 0" ^$ L+ U- K. U/ J9 S4 c
let credibility-money 0; c3 t& m- V- F1 U4 a- |- A
while [i < people]
$ ]5 k$ c# h" ?[
0 m  a' A/ U, |, ^3 \set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))7 h, y# }3 M+ O. L; J: Q% r1 J
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 ~! W3 N+ D7 ~, @( X- _* C' E8 _- \
set i (i + 1)( a% U# T/ F% ]# ]
]
# M# H7 ]5 @2 K+ ]* H% K3 g- Wlet k 00 e" E5 i$ L- Y8 a
let new1 0
" ]3 H( S2 e" jwhile [k < people]# G3 {$ o% p5 W& ]4 s( C( L8 s, g
[
  S/ _. F& L1 l; wset 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)9 L1 _, K' }5 u3 U, c
set k (k + 1)% _& H5 i; u/ K
]
" W/ a& C5 w3 U% _1 n8 p4 xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 H0 L" l: h) p- g, x  dset global-reputation-list (replace-item j global-reputation-list new)9 o; L, ?9 M6 L: F2 C7 U- p
set j (j + 1)
$ U+ Q1 }( g: ^# o5 _  b]; Z0 M% C2 o; {$ H/ ]/ m
end
/ B. B% z0 s3 r$ @4 B3 D
8 x5 x3 q! [8 {. T
$ q3 C% X0 F( C/ `7 N0 _) H2 n/ N* B# \. c+ E4 ^+ X1 Y* i+ `/ c
to get-color
# U9 ^9 M" u: z6 L3 I9 a: ~, L4 n2 W, H( s; y5 C
set color blue

4 O2 ]2 }  a# @% ^end
0 ?$ ]4 x( w* `0 S- W: f# k8 K# c& K
to poll-class
3 H- H  M$ T/ K' ~+ T8 N0 Vend) w/ r" R( l3 s

+ v- n1 s: G; h4 v1 fto setup-plot1
/ G) X, l+ L, D% ^7 ?. I5 z$ r
9 N. Y# l: v1 }set-current-plot "Trends-of-Local-reputation"

% w5 P6 H& m& {; e% B/ i' H: R( [. s; [
set-plot-x-range 0 xmax

9 U. j, @5 i3 z7 J2 L9 L6 f7 Q9 ~
set-plot-y-range 0.0 ymax
$ v1 j4 Q$ }2 a2 k0 ?7 I! L+ }
end
- d# R1 \. S, R1 g& |* i  Q
. M  K0 ?# S8 L7 O% E+ ito setup-plot2, j  l. R& J; S; D: ^2 z
" x! x! h7 j) F8 z! O( G! q3 s
set-current-plot "Trends-of-global-reputation"
, w/ |5 V" u4 \0 m  S4 n

0 W: r7 L  e3 ~: W7 Eset-plot-x-range 0 xmax

& E5 U( Z; }( P: ^
8 o1 i9 _$ ?% ~  fset-plot-y-range 0.0 ymax
% _" ^% @$ C0 p/ V( M1 p
end
# R! l" E& y& e
2 l; x  P$ @  v  M. Kto setup-plot30 q! M3 ~2 L1 S
0 E% c+ S/ y0 i, X8 [+ o
set-current-plot "Trends-of-credibility"

' P- {/ |& Z7 v! T' J/ Q; Y% y' ?
! [( X" e  h" n: ~% U& }set-plot-x-range 0 xmax
3 `3 ~+ V- p, U) m( O
0 F! U4 o# I$ U- E& S8 b: |
set-plot-y-range 0.0 ymax

1 w  |/ w8 R" _3 M/ Jend$ s" m; `: c; r8 l# W$ h

% d7 L  ^. ^  ~) Y4 p. kto do-plots7 ]' J0 {2 P% I
set-current-plot "Trends-of-Local-reputation"
& z) V! q  y4 ~* Yset-current-plot-pen "Honest service"  D. N. [- b5 E5 H; _. a2 i: b
end
$ ^1 |) H* A; H; n( Y: h; [
; i" G& ?  ^; C6 ^( E; a. 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.. Q0 h5 ^8 B7 s2 J# K
0 A$ v+ {1 ^; @+ }  k% [' y
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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