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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 |+ }: j  H' F% V5 Y( G  }8 P7 D
to do-business
. b5 c: J2 C  d( S% Y; {3 A* z rt random 360
$ S; U0 `4 T2 b" `( i: X fd 1
. w, \8 Y4 M6 A! x2 `7 a& M8 A ifelse(other turtles-here != nobody)[1 C7 X2 Y3 S2 S$ r
   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.
. \0 h3 c8 m8 f% a( G   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ m: }- i# `! |7 |% S   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 Z: q5 [9 v( h( s- r' L
   set [trade-record-one-len] of self length [trade-record-one] of self
5 c/ W% d" H4 a5 W) P   set trade-record-current( list (timer) (random money-upper-limit))  J5 p7 I1 e/ L4 g. `6 M4 ~

8 w( g4 G" \9 I3 z  Q问题的提示如下:
0 I: V9 L! S% p, o0 c6 I9 Q+ A3 i9 R0 e6 {' r
error while turtle 50 running OF in procedure DO-BUSINESS9 }2 A+ H4 U9 o& h; E+ h
  called by procedure GO
1 v' O9 [/ m- j/ r' b6 M$ fOF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 }4 N6 z5 q, C, g+ R; X8 [) V
(halted running of go)* P4 k& H) T( y

1 u  k# g: z3 F- m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~~
1 D% M- v% D, a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# J, N1 b  s  }+ ^
globals[
2 y" h* D$ Q, S" lxmax3 I( P  [# l6 S+ [3 S, v! f4 [9 h: r
ymax
3 U1 T9 ?9 k" G! M: o6 j$ i& nglobal-reputation-list/ O* F3 d6 c' c4 A3 |

3 `& f" F" o+ e;;
每一个turtle的全局声誉都存在此LIST! s8 ?' Q* ~4 E2 h( ~3 _
credibility-list
, j( ?9 U' F5 K1 ~" G4 m( a" t' |7 i- b;;
每一个turtle的评价可信度
$ e* I, A7 I' c9 ?, e. P. whonest-service
4 b! b" ]5 x2 e" O8 x; v% @9 t: ^+ qunhonest-service- k) z3 Q$ i6 |1 m
oscillation! J; |+ e8 z8 Z1 [' G9 }  n5 E
rand-dynamic
' f! D0 H6 H! m# H7 ~]
: V% n- n3 B- N0 r" u! B# V% Y+ m) W* i! w) p
turtles-own[
! v7 {3 R9 ~; q, A8 Z, ?; T5 qtrade-record-all& y6 L: i; x3 B! _8 q- r4 y" ~
;;a list of lists,
trade-record-one组成
3 J+ w/ G1 p* k2 U$ H" ktrade-record-one
# w' [1 }8 Z, ~+ N;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 ]- w5 |! p  w2 e& S% H/ d
9 H* U; ^1 `. c7 y;;[
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]]9 W, D; Q3 s6 \% U" g
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]+ x( i+ S3 ?  O) d
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
3 i7 |' U4 h/ L; c& |9 Eneighbor-total
% l1 E* U0 y1 Z( _* E3 k$ X+ D' `;;
记录该turtle的邻居节点的数目
8 M; `  A1 J. q  T  N* Q& gtrade-time
# z1 W. R4 o  c( m2 s# a3 l;;
当前发生交易的turtle的交易时间
% ?! W+ v- ]! X! O2 I+ eappraise-give4 |0 z" O( ?. `  m
;;
当前发生交易时给出的评价
( {% t$ `/ `7 F/ ]& m" k, H+ mappraise-receive
- Z, g7 Q) Y0 o3 \% \;;
当前发生交易时收到的评价
; l' _0 J4 [7 B  N9 Qappraise-time! {* z, e+ E9 z/ a( m
;;
当前发生交易时的评价时间6 o% N, v0 a% x: [) ^9 |; A
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
% A. G5 ?  @. P. @6 x8 |trade-times-total
9 p# \: A' m. T- S, Y5 W+ l;;
与当前turtle的交易总次数3 D, G7 ~7 y2 D; w  E7 v
trade-money-total
: g( d2 r* V. c' f6 ~;;
与当前turtle的交易总金额
$ f% f/ d* F3 C; G$ s9 ^local-reputation) r- i6 f* t  |7 b
global-reputation
6 i% ^& |; M8 w$ [; |+ ^2 [credibility& m! J/ T- M5 H/ @( M
;;
评价可信度,每次交易后都需要更新
4 }, I) ~8 _( dcredibility-all; v% j6 }7 R' }( O7 ]2 A
;;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
" H6 t; q7 Z( p9 y: T; o* ]& i: x' [4 S5 l
;;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+ I; y; T# p2 e7 h0 q
credibility-one
: }# z9 _5 G( ~5 w' `8 ]3 |;;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+ I4 K$ v" S* ?
global-proportion% Q/ T: m& A5 O9 G
customer
$ ?' |  x- g- M2 ocustomer-no  ~4 i/ ~) U* M
trust-ok" w: D6 @0 h# W3 B2 @$ Q- O
trade-record-one-len;;trade-record-one的长度
& o9 t8 T5 S( O- W4 P]
8 n9 U# U# y7 \5 H  Q
* t& r: m5 w' {8 ]  }; T" r;;setup procedure9 |+ ]% T5 z6 J
* d- @2 {( [8 z+ H1 X: l
to setup
8 @4 z' |: v# ?: p5 u# B) J3 U, W
ca

/ z' I3 ^9 |- }. |0 T( `$ U( k3 M6 i4 o& k1 B- P
initialize-settings

1 |, D% p$ a& h0 @; O0 v+ V) n) Z. U: F
crt people [setup-turtles]

1 j. W3 _# v8 e/ z; r; J9 J0 a) i+ F2 ^- K1 \" k7 L
reset-timer

" l7 s4 y7 c) ^) n! P; k9 h. ?
: n3 {, ^: h" E. n5 spoll-class
! e! Q2 }5 L* y" _5 d* n/ K
- b6 ^0 L2 e# ?" S8 d7 _
setup-plots

* M, K+ G" v2 g  F5 [$ Q0 u; I2 j/ X8 V0 b1 g4 x1 }( k0 V3 w9 e
do-plots
  R& d5 ?! E! x( H; ^' e+ v  |
end4 u- Z( D5 }! C0 I4 x# z' a5 Z

2 s+ u' c; g6 ~4 |# `' sto initialize-settings  |! V- E  f/ V0 r  p; v

, _3 i4 E" O' _/ mset global-reputation-list []
/ |' I' o( O8 \
8 H0 E2 b. j, T; ]; H8 L' L8 \
set credibility-list n-values people [0.5]

8 e1 j" m% d6 ~  k+ t' y2 x$ {
# u7 G* n  y0 W. s. u7 R. T3 [set honest-service 0
4 v/ E7 Q& Q6 T  p6 K$ w7 I
; A+ H( u: N7 N: C7 V
set unhonest-service 0
. u+ @( Y. z0 H+ q/ _. A
" Z5 d% R' w# Y7 S* v5 r
set oscillation 0
. N: U% X& h" S( U, Y% ^
) X6 c9 \9 h+ M  d9 g
set rand-dynamic 0

9 T2 v" H* c+ U8 ~# |end8 K& u: ]7 L/ v% L4 K2 `

  |. ]: ]: a8 c5 z( B+ C+ bto setup-turtles , H  \0 ]: |/ [! l  L  q$ K, _
set shape "person"$ C" w& j' @  ], k
setxy random-xcor random-ycor& d- b# \( K- R& @  c9 `  N$ e
set trade-record-one []) @; Y1 _. c! Z. g! W/ ?
- G8 Q* J3 a+ Y
set trade-record-all n-values people [(list (? + 1) 0 0)] 8 t: i' f8 u! a" x. {# y
2 Z: w) a5 V4 n
set trade-record-current []; C% E% a% T% E1 F/ T
set credibility-receive []
; y- _' M+ z' L% o" xset local-reputation 0.56 ~1 V6 U& h8 b6 n8 n
set neighbor-total 0
$ _$ m1 k7 G: a. x- y+ ~set trade-times-total 0& a4 h* u4 X, N/ H# k) w
set trade-money-total 03 K* t  m, v4 h& ~' _/ J) a% H
set customer nobody0 ?, _- _5 r+ w# Q
set credibility-all n-values people [creat-credibility]0 k5 I; g7 a9 A
set credibility n-values people [-1]
9 C" y7 Z# s: W6 U1 N& Zget-color
6 Y- Z: K! r/ m: d4 J3 g
; D. _. H+ s+ l7 y2 I
end+ K/ B0 O. V2 s! M8 ~/ t& Q
2 E, ^8 v2 q: w: K. X, \
to-report creat-credibility
; T8 G) Y/ z5 u0 S( C) Oreport n-values people [0.5]7 P1 s5 P* p% n$ f
end
( Q/ S9 t5 P: Q, t) U! i/ a& c- J
to setup-plots
1 J: w  Y, W6 ^/ s+ ]- w9 f! n/ @, [& [/ J8 p  g4 N
set xmax 30

+ |/ O# X3 T- _2 e& K& X7 j3 x  A3 J# K' z
set ymax 1.0
& c: k( G% V0 G( m% ?1 w

; L3 U* a& F# D  ^2 b: `clear-all-plots

  _) Q2 s4 l' t8 j% V. r  t& ?; H5 P
! ]/ r1 d; P8 Z: b3 O) e$ s4 b* }setup-plot1

0 i: T; I7 f0 c) L3 p, b" L
" |/ ]) s, q, }setup-plot2
0 E& i1 w; n1 R" j3 O8 {& o
3 I; Y8 }/ y+ g. B. K
setup-plot3

0 o* W. }; Z  Q+ K+ ?end' A; q" U  f* z/ `' j' G
4 [3 B* A  ?4 X8 x
;;run time procedures, A6 @/ b' v  A2 u) ?" S

' s' d, B# Z3 I% q5 qto go
- o( Z8 x; `. x8 r. h! y- a0 d, \5 V- ^  v+ V, b7 K* w+ n: }9 ^
ask turtles [do-business]

% {% k! y* a+ I9 z7 M/ Pend& `, D9 M) E7 U

! U, [7 L4 Y0 @* Dto do-business " D# f% b0 G0 T- N3 `7 b
. d6 k, e+ \/ F$ O' n. [
  r7 B/ @* V7 Z- q0 W/ q  ]' g
rt random 360

, Q; f& L7 u5 P' C: c5 K' |+ G; p- E( F  J
fd 1

6 r$ @1 E$ k" a& C+ }3 Q# P
" Z. v  R! P7 Eifelse(other turtles-here != nobody)[
% W' [/ z: u/ C. ~/ y* Q( G: B/ @
: ?! p6 P1 x& j  f( g# `
set customer one-of other turtles-here
% t+ w5 {" F/ o$ t  l6 M$ @

+ M" q: O8 a1 C1 {" x, i% D6 j;; set [customer] of customer myself

  ]8 V) ]+ w) T" X  w  Z
; J6 R( j  }* }1 T/ F% oset [trade-record-one] of self item (([who] of customer) - 1)
9 A, ~  }' [# P: |  n[trade-record-all]of self
1 c1 q3 j- \+ o% K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 |, {) j; f7 o1 m* k9 C9 P2 _9 l! c+ u% V5 _% r% Z) d
set [trade-record-one] of customer item (([who] of self) - 1)
: R9 w" s! G* x  g[trade-record-all]of customer
+ F/ ]; S9 ^1 W$ J. y+ F

" u% u  A, u% y  j- O" xset [trade-record-one-len] of self length [trade-record-one] of self
! R* E% [7 T2 f0 \" @* k: O- }
' [4 f& v  O+ c; y
set trade-record-current( list (timer) (random money-upper-limit))

$ u8 H: Z: a6 H2 J7 K' w" @/ e, M5 q( J9 T' C
ask self [do-trust]$ p+ N: y0 {% a9 P9 N4 ]
;;
先求ij的信任度
) x7 V% l$ A; C0 e9 S5 ?* }1 ~' F3 w; u
if ([trust-ok] of self)# P+ Q/ |) n+ A
;;
根据ij的信任度来决定是否与j进行交易[+ v9 R% s' Z# u8 K' E; n
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 s6 [/ I- T9 ]& a, L$ h9 v/ c( b+ M7 t- U
[
7 {) Y( d1 {0 }( Y

) [, M( l# N% D, Pdo-trade
* o# K' Q/ ^, S; s; u; l3 o

: ~4 d. U5 O3 m8 H$ Pupdate-credibility-ijl

3 q  ~8 z/ l. q# Q6 E. T# e
2 [) W3 _9 I7 z- Rupdate-credibility-list
. m1 K& i1 S+ |; L
2 m6 b7 o" j: b4 E% ~% u
; s. k9 `' [: [: m/ D
update-global-reputation-list

0 F. C+ L2 \/ A
! ?8 @& x. i$ Vpoll-class
6 n8 F4 }. Q9 e& K6 X

3 R: b; o' R0 H  U# ?get-color

( ]# T% ~$ W% e5 O7 g) G/ @3 [5 Y# ?- s9 E
]]
" x) }4 g7 h' u# Q
" i& s5 O. W5 y& k6 |4 T;;
如果所得的信任度满足条件,则进行交易
6 ?* s0 Q/ h2 W% M  p! O0 n  [) V4 _( J- x* v
[
& V% b7 z* H$ q' w

5 }5 ?5 F7 O( y7 w% c! yrt random 360

2 o- b! }1 z. u8 Z+ i/ i- Y1 O/ w  i1 F7 k9 B# |
fd 1

# E3 K, g8 D5 ^+ g( i
) {, M$ H& w8 J]

' j* h3 l; ^; l0 R
- n! q' v8 O7 w" Gend
2 ], i( B# f' \" d4 B0 m" O. J3 F
8 H3 b5 f1 }% D" o, H
to do-trust
6 n: C2 t9 m" R  j1 Z# a& ]: [6 _set trust-ok False
8 O; b8 C% K0 e
1 a1 P$ c2 N5 V' r
4 t# a, l' V; I1 _& N% i
let max-trade-times 0
; U4 y7 \7 v; M; Z% M1 K+ @foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 b+ F" L+ Z2 b: {1 ]" zlet max-trade-money 0* e. G# X% G9 l, e3 Z/ @
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 H6 _) V2 D+ n! m4 J, b  Q! ~let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 ^3 K) w5 B  ]3 v' z5 R! m: j" ]* j! u2 Z- j7 L+ z, h8 V5 S
1 G% [9 {8 y& a5 P4 m
get-global-proportion+ l. B, T& |, X5 R/ j: Q( L
let trust-value
+ f$ J- V7 E/ A. u' H) q1 O: Llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

2 X0 f: ^9 y6 o4 P" Mif(trust-value > trade-trust-value)" O' G2 D/ M3 n" ^7 ~8 Y) |
[set trust-ok true]
5 Z' q" d/ x# r0 Z8 Z7 qend
7 T2 O8 x, i+ U  l, d9 u3 V6 O# T8 s; R  G9 x
to get-global-proportion9 Z' ]7 w& j0 i- H. W$ W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 O7 z7 M8 V; i2 _# _[set global-proportion 0]
/ ^4 ~% X5 e# ~. f( |+ F+ p[let i 0
8 d) e# ]  M4 ^; t$ ]let sum-money 0' g3 ?5 Q8 D8 Z0 |! f
while[ i < people]
) F) C$ j& h. {( D[- K. q- V5 U- l, C, K1 K+ P' |
if( length (item i
9 n, |4 v7 w$ {* g; o[trade-record-all] of customer) > 3 )
+ ?' p; }2 d: T" X7 R
[
' x6 i) u0 P6 ~" Tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% |9 J# j9 j6 Z]2 K7 k4 W+ I1 f* J: R  a
]0 I6 \: t7 a, D5 K8 m8 c: [4 S
let j 0# c* P( k2 v4 J& F+ M5 E
let note 0
  n. L3 t! F5 C  |" y9 {, `while[ j < people]
; g1 P+ P, I9 w$ m[
. Q' o: [- z. G( Vif( length (item i
3 O6 E9 a, Z" H0 y% V[trade-record-all] of customer) > 3 )
. T9 o, I5 ~1 A# b7 [
[
2 \" H! P1 A2 U, Vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" ^1 i. y# T3 e$ X0 N[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% u, l. A% w8 Y) K% v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! N. v/ U. M% r" m( i]
1 ]& ?( i$ F# k]+ r+ F, Q* S$ X+ e# d# O" q/ u8 e
set global-proportion note' t( F3 P8 M) n
]
) s5 g4 T$ A$ I" U3 Kend
. A0 o. a5 u  @* X3 v9 E, X
3 v; V7 E/ d6 X7 P* y2 z/ @to do-trade
; C% D9 N# A, ^" s9 ^4 X/ l6 F5 C. G;;
这个过程实际上是给双方作出评价的过程
; h1 I7 F8 G! D: [, Y9 s- q, lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 a" M2 _0 F( o" fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 `. c. Z$ X  I: W* W' |set trade-record-current lput(timer) trade-record-current
( f4 \* M) Z' {$ u;;
评价时间! b/ ^' ^' J; _& C
ask myself [. k' K# \8 ?& w, \" R
update-local-reputation
: {; q, N6 t" v9 ?1 V! Jset trade-record-current lput([local-reputation] of myself) trade-record-current
, ?: R5 n8 F3 \9 H" Y]
: L4 z) Z8 X2 O/ E+ Cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 A# x' c1 [) m& s;;
将此次交易的记录加入到trade-record-one
1 n( _& j4 |. l' B/ gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); _. h& o# r6 p6 `
let note (item 2 trade-record-current ); Z+ P( y# @4 N3 m  Q; T- f: o
set trade-record-current8 Z$ t1 a) p, W& X
(replace-item 2 trade-record-current (item 3 trade-record-current))
1 e& U3 ~. @+ i9 @0 V
set trade-record-current
9 b$ Y) E9 k# w, ?4 Q  Z(replace-item 3 trade-record-current note); I, `* p2 d$ P/ w  [
2 K3 U1 c* j# }+ R

# t( z. ~" k2 o* J' h4 ^+ @ask customer [& I) L" U" a* }* {: U
update-local-reputation6 f1 Q! w5 k% H) `
set trade-record-current0 d/ Z/ B: N) [/ Y2 L: I1 m
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( l6 t% k* b9 _]
- x: ]# ?% F% k" }5 W' b
1 _: g* D. C. `, s

4 v+ P3 ~3 p+ x, p) fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 c  R) v1 A1 C0 Q! D2 r
2 O' o8 @  _' \, P' D8 v
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 C5 U7 F. @. j$ T0 _3 f& J
;;
将此次交易的记录加入到customertrade-record-all1 z, m5 Z$ A* S1 o' o4 e7 {! F7 @
end
' j) }! Q6 z" ~9 i. H# C* n- j, s; z  ]4 Z% u# i" l
to update-local-reputation, W3 p& ~  s# L
set [trade-record-one-len] of myself length [trade-record-one] of myself
2 @+ g$ ^5 F9 q0 U6 G8 T. q5 Y- f8 O, U: l' x! v
9 R7 w1 S) U, U2 X
;;if [trade-record-one-len] of myself > 3

8 }1 M4 a, F1 C. [' u7 m7 Cupdate-neighbor-total
  s* _. q3 V( m! t2 B, }0 H# h) @;;
更新邻居节点的数目,在此进行
$ o9 b, Q" D: \* l  H% dlet i 3
( r3 M1 K8 V; a" E) g4 H% Z# Elet sum-time 0( p) O2 Z$ P4 b- ~% S
while[i < [trade-record-one-len] of myself]* j# ^' k% l, Y3 B( O  J6 W
[% @# Z6 e  ]/ G2 ?1 n8 Z& b
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 [4 F  ^! s1 h& z# _: d% Iset i
% m8 K2 O  B4 H4 `& x- B" U( i + 1)

1 ~8 H1 L+ c4 g+ N# H]
+ }- C  X! `) u3 e( a' ?$ Jlet j 3
9 W7 |; p0 P2 y5 klet sum-money 07 }! Z. ~6 B  Q7 C+ [9 X
while[j < [trade-record-one-len] of myself]
9 Q, C; [# t0 o7 ^[& A2 a5 y! r5 X" G8 v- ^4 h& ?
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), T& ^! {5 @% e6 x$ M4 {1 G+ X1 J
set j8 E4 u6 A9 _# }4 ^7 K/ `. L2 g
( j + 1)
2 g, X: B" B0 {7 H9 L) j
]
* z6 P) S& v' q) f' Klet k 3, k6 u" R  }3 Q. G0 A
let power 0
( B* m4 b$ M7 |  O+ K& e5 tlet local 0
% U5 t2 s8 x; u1 m; M! ?, q/ I- ]while [k <[trade-record-one-len] of myself]
: C* e% H  n; g4 u4 A) [  l[
/ F* [! [% I( f: F6 Z8 V* uset 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)   v6 u6 {0 x2 U7 e- i
set k (k + 1)' M4 v+ D# m- P9 Z8 d8 f
]
4 L2 ~3 Y' y3 O$ r5 @set [local-reputation] of myself (local)
# D8 _' `" p3 e% fend0 m1 v: X1 ^* f1 n# A8 s6 h

* A) d6 a0 [2 O/ g) P& Gto update-neighbor-total
; {" g8 d$ D/ R9 B$ W" {  A. s- U$ m/ i% [2 D- p/ Q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 d: k( z; x/ ]) m, B! K' I

% h0 Y  U: o0 A4 j

- e$ ~; }: s, [$ F; n/ R0 zend
, @0 G5 k7 j2 C; i0 L) Y. j! r% H8 u7 J7 N
to update-credibility-ijl
* T9 t# a/ O% y" w2 z; l
& l' Q% N( `" i$ h! L' e( w$ t. S;;
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 a# N& n" Q' v; x5 Blet l 0
6 `: c1 f, E6 B( _- ]" U' xwhile[ l < people ]. B; @3 y. B# _7 t* v, N
;;
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& o. X+ J' J$ V7 B+ l2 s
[
1 L" \$ {0 U( Z0 |let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 R# q  j) `& u  Q  T' s( q6 K9 Jif (trade-record-one-j-l-len > 3)
' N. h1 w. W0 J# K[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-one0 q" X4 \- F: U. m7 w
let i 3% r5 ~- b7 b" Q$ t7 q# R9 i/ a
let sum-time 0. A6 x( c# @5 g: y3 x
while[i < trade-record-one-len]
' n! y$ i# z. R' o& h4 H( i! Y[4 \- M# N) n  i$ h; ]: o3 O; m
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), _, e9 D: H1 B& q- O; \6 Q
set i" I2 y, I% O& T* E- C; w
( i + 1)
9 K- F, e3 v% z9 A
]6 {0 u) u6 s* a' |% [3 A
let credibility-i-j-l 0
$ l" g, V$ f8 @; p; w$ o;;i
评价(jjl的评价)9 b- I( X4 O- H9 @' P2 L
let j 3
; ~  r. o- j& c) A+ t. G  Blet k 4
5 f8 g: B1 }- v0 z2 twhile[j < trade-record-one-len]7 v1 W0 o6 w4 q! y8 D3 H
[+ v, i3 y" m) e9 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! h$ A! ?# @& h4 @" [
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)2 K* M6 U( F, M( k
set j
2 H: M. j5 r% o( j + 1)
( }$ ^6 M+ e! q
]. S; g; K# o4 Y. t
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 )): X3 |/ ^6 A) j. t, ?
& X( x- }; e( p" C; |+ B5 ^4 X. Q: q
4 o: h8 l8 [3 L3 ~# I
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): u  ~- }1 V2 i/ s  K( S; i1 @, @
;;
及时更新il的评价质量的评价# I& M. Z, \0 f1 M4 V  o  G
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 t" P& ^3 J( d4 H3 g1 v/ {- E# Oset l (l + 1)
$ }5 j, P% W/ K# u. V7 z# g. X; y]
& G8 f9 S7 v' c- X4 xend
6 y( c- Z! q7 M$ F. v4 w
' S) k3 g3 h- ?) K0 @, c0 Gto update-credibility-list, y0 c8 i8 f8 w& Q& b9 U2 X
let i 0* s4 }' G; O2 c$ Z7 w
while[i < people]
- U6 W. \) F; [, w) |[" ?% X; ]0 v- u! f
let j 0
( C3 p2 W- S9 e9 j$ ?' d/ ]3 Slet note 0
2 ^! E1 \+ k9 w( O# G9 `let k 0$ G+ E9 R/ K+ d8 X  {' r
;;
计作出过评价的邻居节点的数目
% O0 R1 \5 W* D  i% ?while[j < people]# A- Z9 u& X1 U# Y
[
; q( d3 Y8 l" M1 U/ D  zif (item j( [credibility] of turtle (i + 1)) != -1)) u# H& G, D& `; a
;;
判断是否给本turtle的评价质量做出过评价的节点
8 D% S: r/ ?' x7 i[set note (note + item j ([credibility]of turtle (i + 1)))" I- n7 R; m4 v, x# i0 E+ u1 A
;;*(exp (-(people - 2)))/(people - 2))]
# v5 ~. S, z. H) g* T6 |+ `+ c
set k (k + 1)
9 h9 R4 _* E' v]
0 C& L9 u6 k: `! [set j (j + 1)/ t0 j1 l) I- z
]' J0 y  Y( z! ]5 y" y3 S0 J
set note (note *(exp (- (1 / k)))/ k)
) y* C( f2 K/ z& t* I8 ?9 {set credibility-list (replace-item i credibility-list note)! G1 T5 b0 S8 b  i
set i (i + 1)3 c1 e9 z: c/ J( o* k: u6 C
]
6 I9 o  Q9 a/ U/ g; Bend% C* A$ n9 D, T0 d; ~- Q. J
3 c, C3 j. `- j$ q
to update-global-reputation-list' _& t8 C! _+ ]1 e, s' h
let j 0
& x' M  Z$ B9 k; ?while[j < people]0 S5 c: y9 R- L3 c
[
9 p, f4 H9 W  {let new 0' S) p0 \0 o* S% ?
;;
暂存新的一个全局声誉
* J2 P0 g& Z' m8 F5 slet i 0$ U* z$ m8 M& A" W6 w
let sum-money 0
* D& L: Q1 G  `let credibility-money 0) \" C1 _7 L) j; l! ]! Q
while [i < people]% h5 J0 s+ C! L4 P9 x& H. H) g
[. d: Q7 Z8 G" v5 D: G
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" y6 X& L& P0 f# c. S. \8 G+ jset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 w  B' N6 s4 @- x% @; Y, J
set i (i + 1)# q4 W; o+ \6 J# x) M* p! Z0 M
]; i3 w5 V" d/ H% A
let k 0
3 D8 o9 A  B6 w+ Z+ nlet new1 01 r) ~, O. h( b! f# O0 @6 o) l
while [k < people]/ Z6 `0 J8 r- h; @0 v5 G  G0 u) s% q- ]
[) z. _, g) G7 ^8 v2 I
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)8 a# n* @5 {  }& B% J8 Q
set k (k + 1)
1 W: ~0 K! \2 K: J]
5 O. [5 D4 s7 y& F" M1 P+ Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# v' V2 O" H! u! j* n) d8 |set global-reputation-list (replace-item j global-reputation-list new)
0 r- T. g. G9 X) ]6 V9 N' Sset j (j + 1)
9 I% z- S* N+ n; X]
" ]  o7 t# h) ]: {) S, J- Uend8 u$ z9 {# M" f& S8 U$ k

  `2 c8 Y: J* {' q. G7 N8 N
! u$ E$ q0 y( Z' N9 M
0 _+ s' D5 C0 ]4 m3 O/ Xto get-color
+ d. K" a" k; M6 o' ]' u/ \9 N" l& y7 V: c5 w: v
set color blue
6 X, f# E# q7 g
end: q: o+ J% T/ x0 t
3 A( |& y/ x. @8 m  T
to poll-class! \# x4 h8 w% u
end
' ?2 k2 _, b& ]  Y3 \
/ N0 L6 p0 o5 {to setup-plot1
1 ?+ r( N* P7 U! X5 J# u' F- z0 ^) y2 B7 }* k% I8 \
set-current-plot "Trends-of-Local-reputation"
6 L- r  V6 }* u% w( O! _4 [

) W2 I/ [# p; t6 z/ Jset-plot-x-range 0 xmax
& r" I0 E+ H9 y; |8 ^( R

5 ~8 N. g7 s/ n2 j, }" P- f/ w/ a9 ]set-plot-y-range 0.0 ymax

6 R1 b- d2 J* I8 U1 X* |end5 A" \7 V$ a* o  M

' i$ v" M" p) Z% Lto setup-plot2% f& u+ I8 X- j2 i& b9 Y9 U- a
) d( A% Z. n1 C7 Y/ X3 g+ W4 N
set-current-plot "Trends-of-global-reputation"

& f2 h# S6 A3 ^/ J1 Z/ J. v9 C) G7 h' Z0 S  x5 _- g: S# ^4 b; d
set-plot-x-range 0 xmax
) \' B7 L) ~1 [- t

/ }, j. `0 U( f; |! a4 bset-plot-y-range 0.0 ymax
  g/ W' b" E7 ~  h
end
* C% M; f; l1 j4 x" V* z4 _7 T" u6 n) d9 a2 h
to setup-plot3
& n& C0 }( u; I5 Q+ J# W7 Y7 q+ H
! \! v4 e* m8 u" U0 Oset-current-plot "Trends-of-credibility"

' D* g; C' h$ ^9 b1 d; D3 r' e- ^  l9 T+ Y* ~! G8 y
set-plot-x-range 0 xmax

9 r3 S. f" p1 M: k
7 y' y  G- v3 w5 Vset-plot-y-range 0.0 ymax
, e# E7 r0 ]- X9 A
end$ a; j" p5 K, m

2 Y7 h. w- y  n5 dto do-plots0 Y# }; k+ C1 g/ s; h+ i$ m! ]
set-current-plot "Trends-of-Local-reputation"
) `, A. k' `8 Lset-current-plot-pen "Honest service"* z& }( ]5 G9 {/ Q  e
end
: y# u3 V: D) Q" y+ h' [- E
9 O/ j6 x+ m7 X) W7 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./ U( F5 U8 @' J5 r% B

) u* u9 l8 s- \  N8 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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