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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:, n% `+ {3 D& g. f4 b8 U( G+ o/ |" F
to do-business " Q& [, I+ f' J; ~! x4 Q: T) f$ ]! i
rt random 360( J6 h7 Y' W% j% Z' j
fd 17 m4 h% w  u1 g! @9 O2 J
ifelse(other turtles-here != nobody)[
; z, k, w, G% ^& H8 s6 c( M. i   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 ^0 J" i- E/ C: X2 M" [   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & H+ N& E5 j/ `. t
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- \9 C) ?% t2 S+ T# L   set [trade-record-one-len] of self length [trade-record-one] of self
9 V6 t. j  \& H, f/ X; n, t! Y   set trade-record-current( list (timer) (random money-upper-limit))
* P0 _, ^3 [1 }  s% }3 }6 A1 C
3 u# F' U8 `' K问题的提示如下:
5 l* I6 d* o7 g- z, `# r' Z; [
- X- `2 U* B: Q6 i/ \error while turtle 50 running OF in procedure DO-BUSINESS( `) b. N7 Z: U
  called by procedure GO
9 B; ]8 R2 C( G3 U  E/ FOF expected input to be a turtle agentset or turtle but got NOBODY instead.3 F1 l+ R7 ~( u
(halted running of go)
+ P# R7 @1 b- |  a% W
5 q" ^, v, o5 p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~~+ |0 e/ s1 q  N- I) ^. 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
2 n8 [3 W1 G* D( ^# K6 w/ Kglobals[
! s0 S$ k/ a7 k1 m$ S+ r) jxmax
$ \1 a" W3 R) d7 aymax# z- S& s" K# O  u, E, |/ [
global-reputation-list
7 A- g6 h9 z/ Q2 T# H3 A' W- h
% g( v8 @( f- X/ q: F;;
每一个turtle的全局声誉都存在此LIST
1 j7 O1 _8 J! p  O/ J: h  Rcredibility-list
" S7 _2 n( C# n( A* h9 N+ X;;
每一个turtle的评价可信度' `) l/ C1 s% D! _7 [4 p# Y6 U
honest-service+ c3 w8 \! w5 ?  D- P" N. h
unhonest-service7 @% k' F# I& f$ M- D& |; f
oscillation5 O% }0 @/ a( b, E. l& }
rand-dynamic
1 O6 q# g, ]9 u. d7 P' c% X, q]
% L0 R* v' G2 c+ O5 |
/ B' B) [6 b6 H+ h+ ^turtles-own[- |" U4 k9 N$ g8 L
trade-record-all
. N1 \# w/ b5 N* o1 c) z;;a list of lists,
trade-record-one组成* S- B$ L; ?( I7 ]
trade-record-one; v0 b. B2 \9 i6 w  Q
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& {9 o5 @/ C2 E; ]# l# P5 X8 W2 M

2 R6 o" S7 i, [: A% l+ R;;[
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]]
/ \# o  ~, G% k2 W% O3 Ztrade-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]
* U- r" Y. q0 S5 icredibility-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list3 ?9 N$ B; i9 L; T7 Z
neighbor-total* y* x, |4 W; T6 N# a" b; u
;;
记录该turtle的邻居节点的数目
+ D2 h- z+ G1 ^5 f% ~trade-time3 b2 R" B1 [- t
;;
当前发生交易的turtle的交易时间
' r7 Q. X3 `* w$ cappraise-give
3 ~0 y. ~' ~, U- i4 Z7 n;;
当前发生交易时给出的评价# P) q2 r, X1 m. K# V# S
appraise-receive
+ F  H1 `  V$ }, V6 L- K& ?;;
当前发生交易时收到的评价' J2 g4 x9 v/ r( Y$ b
appraise-time6 M1 f- S, y7 y
;;
当前发生交易时的评价时间
3 s; W( u/ c5 J5 z. hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
9 L6 f" z* F' S9 `! K& }" Ptrade-times-total
- Q  F" N4 A5 L& e7 P;;
与当前turtle的交易总次数- Q! D2 N! f  b  ^) C$ j
trade-money-total2 C6 U3 v& u5 P# n) r
;;
与当前turtle的交易总金额% ?: r& \* ~0 ~6 l  d- G
local-reputation$ W9 ^+ R- k! X& b& @: u! s. l
global-reputation* S7 _$ T" W5 ~6 N9 e+ \" R1 i* J* H
credibility3 X1 B. y/ m3 }- D3 d* ^
;;
评价可信度,每次交易后都需要更新
0 F6 v' I  A7 \0 ^3 Pcredibility-all
% [+ C6 c5 k1 j& S;;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4 d' s# b# s) a/ U2 U' i
; u+ M$ R( B4 g7 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0.58 ^; @( t; Z2 t, d' x4 o& V+ w$ D
credibility-one) S8 |7 ]; U3 ~( ]' D; e8 b& v
;;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
, c) u0 S# y) ?' K8 Gglobal-proportion
0 P% h  g+ a/ n7 \customer! Y6 y' u: T& r# B+ G) @
customer-no, f: M) D3 c. Z# [2 l* I
trust-ok
9 N) d' \6 V" U% j- h: s( m. [4 Atrade-record-one-len;;trade-record-one的长度( g7 Z8 ~! a' }- N8 ^
]
1 N( ~  l! A# `! \" Z1 s( c9 e2 i, M/ l) m0 z
;;setup procedure
9 N5 Y( r* I1 \: T0 U( Y) t! N
, z/ K7 w+ d- N$ Q* q- }9 J" \7 Fto setup
9 o; o. t% u) \" o( E/ ?# t
: Z. `! I4 z5 Hca

: ?' z3 u/ u# e2 H
& o  X2 M8 X, {. n! binitialize-settings

# _0 \# d( X" d( R$ R/ m
- _# v* ]8 |; t2 ]8 a# [( }crt people [setup-turtles]

5 Z/ y& F% ]- M( P* s# Y* K; U$ z+ k8 y+ n
reset-timer

. y1 q: ~& ]5 ^; |* p: C
8 o. [0 \+ f# {; a# H* gpoll-class
% T5 s, p% V% V6 x2 T! _
+ P+ L) |4 U3 y+ o
setup-plots

1 q3 _: Q$ N: C
, p. S+ ~6 g) [2 R8 n* {. l. ydo-plots
& L. @+ @. A# L& e0 D5 Q6 ?
end, s" X' c" Q2 v2 ^9 O- ^/ L

$ x& Y1 A4 h. u. \4 Qto initialize-settings
! d$ M$ m$ S' k8 U6 k# ~
! b+ ]  Q. T0 L8 Gset global-reputation-list []
# u7 M1 `  E- h0 L/ \

; c* U) E" i+ f. Z5 P; i/ F8 ~# ?' Cset credibility-list n-values people [0.5]

2 I/ r8 M( S8 N6 T" O6 {. ~0 H
( d  s8 x# k% `3 wset honest-service 0
! W4 |& T5 i( Z
3 z8 I* i/ t9 s, o  p+ k' N" [
set unhonest-service 0

  _* K& y* c& V9 W) w* g0 d9 A. ?4 |/ {" L* ~6 j( l# p- i
set oscillation 0

" A( d/ V8 ]! j5 E3 ^) ]8 Q: M
9 Z1 C5 f6 L/ x' X+ V: X! q8 fset rand-dynamic 0
7 L+ P8 h. m% K- c# E& i9 T" ]
end: ]( x+ u/ S7 ^0 I3 w

. c9 r3 ^% [$ ^) _5 [% jto setup-turtles , ?' C# y0 ]+ l- L. V; p0 v
set shape "person"" l# v, F! D! O2 d/ t
setxy random-xcor random-ycor8 R; u% X% c" f. I# J) _1 g) ~: z
set trade-record-one []  h1 _" ^) e6 L3 Z+ A6 D7 a1 ]3 e

& C  e2 W+ o" D5 I# q- q( r6 g1 xset trade-record-all n-values people [(list (? + 1) 0 0)] ! A4 H- P! N& C. B4 z

! d$ n  i6 w' B1 E, t6 ^set trade-record-current []
7 {$ \+ n4 E) U3 K$ O- Gset credibility-receive []- G" C  C; O4 H4 s
set local-reputation 0.51 Z( e# {1 x. r& x$ g0 r, n5 t+ n1 v! `
set neighbor-total 0/ [8 O6 u1 r3 \0 ]: K( Z
set trade-times-total 0) I" k9 K; b' p( T/ P8 V
set trade-money-total 0( M( M8 h& B. a) H  g" l
set customer nobody/ ~/ W9 x# C' T5 e
set credibility-all n-values people [creat-credibility]
# c4 }$ i- c, e9 p# G7 _set credibility n-values people [-1]
& Q+ D9 f, [0 V2 m: R, Jget-color
$ k( w2 `7 E% M8 ]% e1 W
$ O  b' D- |* b/ g( H: d9 R. o
end
1 i9 e1 I8 d; c3 Z
* Z$ X# S7 w+ |0 m( v( Zto-report creat-credibility
! f  k! O: z4 B+ R5 i8 J2 l9 p. ~/ Nreport n-values people [0.5]
2 S+ k9 S8 j. q" Kend
! z2 T; }2 [  S; X" j$ V) `8 W+ H4 X
to setup-plots
0 Z. n1 K0 Q  C; f+ X3 y. V  Y2 ^( n; p
set xmax 30
7 u- V( Q- w" v; W; Q7 D: V

9 x6 \/ x/ ?9 ^set ymax 1.0
! z: F* z# {1 l; d+ E" J! o: v
2 a& L7 G, ~1 }/ B( }- d
clear-all-plots
4 h( b  I+ L! D& W" F' `

9 ^8 u7 D; P, A' Bsetup-plot1
) u+ q3 \& B+ E4 D- e( T( c# |
9 ~9 r4 X2 V2 q, F: D
setup-plot2
# {  P* N+ A. L- `1 t! y: h

# `* L& R; s% |' G# s9 ^$ zsetup-plot3
7 u  p! Q9 W* D. A4 e0 _, C% p8 U
end- k" d& K5 O) h" e
8 ]  Q! J5 F/ }2 L0 H+ n$ ]
;;run time procedures- A* m" a  Q. _/ Y0 i8 Y0 J$ B5 u8 B

. T  {( X- r2 ^. dto go
3 q8 ?, T5 W( C. G
; L, J3 k9 L9 P6 \6 r$ d! X# nask turtles [do-business]

- F1 b+ R" w- yend" F$ `6 G1 `  Y  h+ W, \

& d. P! z& @" [; R* {- C# T4 Fto do-business * w/ b4 q: M4 I/ d

& H: B( Y% K8 J: w8 X6 S, x' T0 `; _+ j. m1 E5 s6 _# F
rt random 360

% r5 \+ a& r  I3 Y5 g; m! _) B" B$ A
fd 1
% u5 f6 K' ]& N1 A3 d$ j* q
' w' Z! o+ g2 K2 _9 V
ifelse(other turtles-here != nobody)[

; k- f  t9 ^+ ^/ Z- c( R6 {- ]8 I1 G' u
set customer one-of other turtles-here
) {9 d' p" m3 |4 S
! g& q  S$ k. s7 E( @
;; set [customer] of customer myself

+ X* V6 I, D+ u6 {& f
2 h' p5 }3 {# b8 J( jset [trade-record-one] of self item (([who] of customer) - 1)
0 @& N# Q2 {" Q5 ?3 h[trade-record-all]of self
, B5 @& \' ~$ n9 b6 i;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& F3 M5 d: h0 }/ ^. P& k  J8 b7 ~) B) i7 E! W& D% e
set [trade-record-one] of customer item (([who] of self) - 1)
# @4 w0 \5 |6 A9 ]0 K. h: M" ^! L[trade-record-all]of customer
4 p$ `  [+ F! F
: K% A: M- d1 u- K+ d
set [trade-record-one-len] of self length [trade-record-one] of self
  z; g3 |0 D2 d4 T$ c3 `
; P+ V9 t8 \: g; Z" c% `0 c
set trade-record-current( list (timer) (random money-upper-limit))

2 ]! w* F+ V# o& F; M6 L; O* ?/ ^; n; s2 @' G; ?
ask self [do-trust]! p2 j+ S; G7 W, u, I. t7 q1 Y
;;
先求ij的信任度* d4 Z3 L+ J2 r+ ^- T1 L5 ^2 W

6 m2 w$ o1 q* _( _% I" Z: Nif ([trust-ok] of self)
* F. Z; S" Q( `% B) k7 P;;
根据ij的信任度来决定是否与j进行交易[
. V: Y3 k( @, v. A3 @+ {0 o8 Wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; N4 Z" O; s/ h1 n4 x- x; I7 C
- d2 ?+ O. @' I' R" s* _
[

2 ^3 f% L; L7 w
" P7 ^1 l- T2 Edo-trade
4 W% M7 J: ^. L1 U6 _+ T
! q9 _6 k8 W$ @9 |  z" a
update-credibility-ijl

; l# Q  b" \4 e: D  w" x3 i1 b# B& V3 `# O
update-credibility-list
* m; h" s- h# y- Y# Y/ Q* p

$ p8 w$ H' S4 ?, o: \6 z+ {& r
) k( p& V0 j8 n: q+ s6 [) `' Yupdate-global-reputation-list
8 S( I# X0 ]8 E6 E+ z, y8 A! x
5 b4 Q" Q9 {7 x0 n7 f
poll-class
3 V$ [/ I  b! C9 ?& h9 A
& Z. T0 k  ~4 C3 ?+ e: J$ p1 e9 X
get-color
: K  a+ K7 ]: B3 `5 x3 m) G/ x8 m
( |1 v8 R* t5 t$ T2 F" R3 U
]]
+ k  \6 u9 a: b% z
! J) p; d0 _5 X; {9 m. u7 {;;
如果所得的信任度满足条件,则进行交易
8 K$ T" g6 {+ x) H/ m" p' u
/ G$ N$ o1 E  N, N[
: X6 Y9 l+ x' ], \# @

7 H7 ^8 t/ }" o8 @. E3 f" Yrt random 360
9 R4 W" G. h. Q4 b* U

# w: ^1 d" I- h6 `) V- J8 nfd 1

* `/ R: F9 B0 ]5 ]8 C8 a% M1 l9 ~7 {
]

3 c# c' m0 x% c3 s1 p. O
& Q  ^, ^' a3 g6 uend
" W8 r9 I5 k& m, M

* \1 a% V6 ~& l( nto do-trust
7 Z/ Q7 ~& R4 {6 C0 lset trust-ok False
7 X4 P* s; _8 u* g$ w" ]5 |
2 f' [, h# t' a

. W* C0 l1 B. F2 B2 vlet max-trade-times 09 \4 x  Z$ S5 M
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: t# ^- V% u7 f! U( l& L
let max-trade-money 0
" G" U( @/ v! c5 e, I6 f* Zforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 n* j! }# s& y( J3 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))/ Q% c* M3 p; g+ T
, z6 j2 l8 i# F6 _/ j$ c5 I0 s! s2 s

# X9 s/ K: F/ q8 yget-global-proportion% h7 {8 C, M5 p  ?) k+ L, c
let trust-value2 O! Z1 H: `1 M  j
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)
+ v; E* @  K  j0 C+ e, r2 A/ y
if(trust-value > trade-trust-value)1 X& p2 E( D) j& d
[set trust-ok true]
$ k) I3 R& l5 |4 l/ pend6 V: o- P. H* \: R" ]* ~
) ^/ o! W3 G4 a8 K
to get-global-proportion: k* A1 j7 e' X6 x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* o% Y7 C6 Z/ z5 {+ w. @" G9 s4 p[set global-proportion 0]3 j) T- \7 c& |* w
[let i 0
0 A1 p( ~' S% b& |5 T$ z/ alet sum-money 0% n1 u4 s1 o% _( ^- f4 C. J
while[ i < people]
0 k, }5 L2 v- O5 f[
( [* F0 D8 F( \/ Z9 S+ i; vif( length (item i
& @2 ~0 j- ^+ g- F& v[trade-record-all] of customer) > 3 )
2 Q/ X( Z- s2 |
[3 Z! L2 H& S" a2 A" r, J
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 ~7 l2 K! J) l
]
% J* j! ^  a) @]
8 t) V7 k" n4 [( p0 V" E: glet j 0
4 n) N, J/ v- i* X6 Z1 ?. C) `let note 0
$ j# M9 b) m; c; y( t* owhile[ j < people]
& |2 H' S6 Q1 p[
  W! Z& u; l6 m3 M5 d, bif( length (item i; H$ F8 N, C  `, S8 `0 H
[trade-record-all] of customer) > 3 )

; o& T6 t+ i9 D! q[
, A/ L. e+ W" A5 C' L* Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ q7 ^7 j" N3 v/ R
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ {" e# G4 ~/ T+ f( \9 e# X( [1 J
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& c6 A4 \: D4 }$ a7 D" Y]; Y( W" t6 o  C# J; L4 m0 P7 \; P
]/ ]! t4 i) ^. Q0 z; O$ @4 N; H2 D
set global-proportion note
. L: r/ r0 g. F]+ e' a, W* r: N# r$ u9 o$ G
end4 y: ^/ |7 V' F. Q

' q/ y( ]/ u5 M1 [2 eto do-trade
) \( c  I/ B! ]& f+ ?0 K  D;;
这个过程实际上是给双方作出评价的过程" C9 R# r. c/ l- U$ @3 y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 ?5 g) N6 z; U* b( x  k5 sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 z4 b! n3 }/ V$ o* r) aset trade-record-current lput(timer) trade-record-current
, W! |" R: a+ N6 [3 \;;
评价时间
* A$ X/ o5 G8 X& X' Gask myself [
* o( b1 V( M2 S* J3 `  P% t" Cupdate-local-reputation
9 ]; U$ @( ]) R5 q- {0 t- N7 J( [+ Rset trade-record-current lput([local-reputation] of myself) trade-record-current
6 i% w; Z/ _& [$ y" _( L! u9 c]& j- S! `' U  k' H! O4 y+ F" O
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 H2 U% t, P' n8 T9 Z3 K;;
将此次交易的记录加入到trade-record-one
3 O2 c( w4 n" _8 x1 ]( [7 Aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% g; H% N. z' [/ j$ n
let note (item 2 trade-record-current )
. b& H2 M! A' _6 k* y: E4 S. nset trade-record-current
/ d; r* k6 n: R* D/ F" g6 j8 x(replace-item 2 trade-record-current (item 3 trade-record-current))

! j* j" `. N; ?set trade-record-current
2 P+ S- ?1 Z7 `; [8 j; u; v(replace-item 3 trade-record-current note)
3 ?3 o2 R* E2 |( c( C4 X# l4 t9 z* R0 q: U" \* e5 a3 f
5 m( E/ w. k" t8 o# g3 _
ask customer [
+ F8 R' _+ N/ a' i5 _% O. R2 E7 \update-local-reputation; L% _2 h" Q( r4 T( Z/ p8 M/ ~
set trade-record-current3 I4 y# [$ n2 K/ J9 \; r
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. _1 ]. L6 o5 j3 [. M
]2 ^! S! W! V/ O. L2 A; i1 ?

0 [# O! F( `; m; y
, T% z/ w) G1 r
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, `/ d/ t: y0 N  @0 `4 ?# X

- R! O- a/ ?; a3 [5 M% mset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 b1 w- n* d) n) Z) S% _6 X
;;
将此次交易的记录加入到customertrade-record-all
) @0 f5 b$ m$ m( Kend' P! D0 @% Q9 U

( a$ x3 B; T+ a6 _) q- u1 z# gto update-local-reputation3 i2 G8 P7 j6 ^' _
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 `) D* A6 G$ {) }: c& ^+ L. @9 U5 N2 t8 Z

; J* u6 R' x+ ]- P; ]- C;;if [trade-record-one-len] of myself > 3

' ^: g% m' @1 ]2 yupdate-neighbor-total3 h9 E9 N9 T' o; L
;;
更新邻居节点的数目,在此进行, ~; ~, k1 j/ |! V& n6 C
let i 3
. O7 C+ c$ K! b# y$ f$ l5 _let sum-time 04 Z3 J* R- m2 u0 v
while[i < [trade-record-one-len] of myself], E$ I  W$ c5 g3 S. y# |
[! b& ^) @7 P% x- |4 u+ c
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' y$ x# R6 m6 f! rset i
! b2 V& t, o5 D* P! {9 o( i + 1)

$ Y0 n+ y2 C! P- j]
4 Y# R$ {2 W/ E: {+ Tlet j 3# R( a4 N- U5 ^/ u3 m9 x1 d
let sum-money 0
8 Y8 e  D. ^8 F& g& }while[j < [trade-record-one-len] of myself]) _* ?" b/ K1 n5 [, q4 L
[
' e0 l% \4 u$ n1 G, Hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
# S) n5 |# G! h# Mset j: \, ^- L1 j# @' D9 v6 C* K% k
( j + 1)
% f" @: {0 M$ q& S6 `
]
; U3 z0 E/ X2 {7 g% ]. z8 D' Alet k 3. t, U1 E0 D. R3 |# E; p& A& f1 h
let power 07 F+ J; q0 A, Y6 }7 D6 o9 ~
let local 0' _8 A# Y0 {" O* T1 H" c4 s
while [k <[trade-record-one-len] of myself]" `! z; Q$ k2 b
[# z3 O6 m4 n# S: e0 d( ]
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)
' k4 y, N+ L$ {8 ^set k (k + 1)
8 ~) B/ j8 I, \0 _6 _0 h]
+ o: |$ y( w  i6 }. C+ y1 u* `set [local-reputation] of myself (local). e& L8 t( q# W8 J$ I, g7 c
end7 |6 J! Z+ S9 N2 ]

5 D- ^9 |9 y/ ?to update-neighbor-total
  U/ v8 @* g) I- n& F0 b: l# y+ P' D0 \" j( c* m
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 j- G6 y+ i9 v7 t

2 Q, O1 M: _+ O  }$ P$ _

* m3 }6 @. a5 o* Mend
  k7 R5 O  V; ^3 |- C- n6 x" E
$ e+ r& y/ f; K( h' L) m! j9 uto update-credibility-ijl
6 O% m. t5 p, p& H
/ m, c7 ~7 g, e2 R0 U! I, b5 Y;;
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。& L/ r* }4 P: i2 p8 i4 i
let l 0# V$ J3 V# E8 }9 U9 U
while[ l < people ]. a3 i0 P* _% g
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价8 x( O. ?3 A# V) ]4 e
[
# p$ o2 p+ `$ s2 `let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, n  `- F8 Q' B( s# N) J7 C  fif (trade-record-one-j-l-len > 3): k5 a0 D* t* }
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one1 ?" K" N. p4 K8 q' t
let i 3  [  M, {/ z* S% p" G! b8 `8 K
let sum-time 0
9 F4 q9 ~6 ?, Q2 B" Uwhile[i < trade-record-one-len]
  N& ^% R" u% h$ P3 i3 U5 K[/ [9 n3 N+ a5 K. p  G
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), b( I% L  e2 g& X) `  |( o
set i
6 n( }0 {+ _. _- C0 P( i + 1)
: v, F& U+ p9 C5 r4 ?! `% u
]
* c8 k9 a$ z) ]6 L9 C' glet credibility-i-j-l 0
6 r4 S5 ?1 T4 W3 ^3 P3 m;;i
评价(jjl的评价)
/ D/ S6 V4 R/ N% N0 d( M& M. Nlet j 3
1 `. h( C5 A/ mlet k 4* Q7 c! X7 o) A) F' e, F
while[j < trade-record-one-len]2 n: Z8 f8 q' M% r- T
[; X, P+ G# u- B: N& ^
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
5 J# y3 K+ y9 l7 S  Yset 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)4 j1 }3 A6 e! `0 i9 d0 X/ T
set j8 I: x2 F1 b+ C
( j + 1)
- G( t2 p; _' K# c; j  p
]
8 d1 }' w0 S/ Q) Vset [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 )). R$ m6 A9 u0 S( ~# t6 |8 I

$ ?+ `" ?$ }3 ?4 w! s( M/ V
! g! }. C! M7 b; l3 u, ?$ Z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ ~; {0 l9 l# }; F
;;
及时更新il的评价质量的评价
/ j8 D" u, P6 S) a. [+ m* `set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% e$ K' O% k9 {+ |, A. ?set l (l + 1)
0 e$ E6 n- }% K5 F* }]
1 A, r+ b4 }8 y/ h( m0 Iend
! ~/ h) q6 J/ b# t) Z* t, l; j1 K* K
to update-credibility-list
9 y1 ~9 k/ @7 T- U+ Dlet i 0- P4 Y! e- L  O0 o
while[i < people]
3 e6 v3 d% `* K% c& g[" Z' e6 i$ {% d
let j 0
: ?" p0 o2 {5 p1 E& Jlet note 0: C. u$ E( T$ M* g9 m, u* _' j& u
let k 0
2 I5 l/ g7 H  U" `: r" ?;;
计作出过评价的邻居节点的数目! {5 [4 a. V% q- m' I9 ^6 u: `
while[j < people]4 M4 ?$ T) I% S9 Z
[
* p) L9 h3 I' N+ w$ S" R) g( b8 Eif (item j( [credibility] of turtle (i + 1)) != -1)
; E, G/ q* ^6 @' t0 ^;;
判断是否给本turtle的评价质量做出过评价的节点* H# D* `, ^1 z6 m
[set note (note + item j ([credibility]of turtle (i + 1)))9 h" h4 R2 P7 _9 k- A+ N9 |% U/ @  v
;;*(exp (-(people - 2)))/(people - 2))]
3 I7 O+ x: T& h& F
set k (k + 1)
  @$ P1 K+ r3 I2 I. i]
# E* N+ A! q1 H1 V  Fset j (j + 1)+ |9 k* x- h5 |- B; t+ ~1 ^/ B6 V
]
5 W1 }( J( T; M! M) s! C% fset note (note *(exp (- (1 / k)))/ k): q( C0 ]4 b( g0 P- W) a8 P! T
set credibility-list (replace-item i credibility-list note)
2 a; @% F* I4 X1 Pset i (i + 1)
5 h% t$ K* r0 c$ B$ U]8 c! o* q9 A6 n* B0 ^* F4 b
end/ N! {* [% A: e9 ^; j, a/ X2 E) a: ?
. f9 z: |5 ?  s& R. y
to update-global-reputation-list
4 y2 Z+ i5 Q/ G* y) o. \0 K0 Olet j 08 O  M5 [0 `# x' G
while[j < people]7 {3 [9 a; n: g/ ?# [
[7 X5 t6 N  ]( b' L: U
let new 0
% @& W$ m5 E: I( z0 x  D;;
暂存新的一个全局声誉
! B2 E6 {% D( D* `) G5 _) ~& ^( ?let i 03 w5 s) _$ b3 T2 D& X: F
let sum-money 0% o0 y* J8 {2 i3 i4 P3 a; v8 p0 z
let credibility-money 06 o+ C4 {+ r" r8 a
while [i < people]
$ K* n, o" X; @/ ~2 q2 G[# N5 S& ^( Y, Z: b" {+ @
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ L6 {! W5 Z! V! V, B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 \6 |0 m; d4 m
set i (i + 1)/ L6 _  W. z" t/ f* t: m/ S
]
0 T" U, ]: L9 t- M, llet k 0
2 M4 o5 {0 t2 K9 M/ L- Z  Blet new1 0
% X/ N* Z: k8 y! K5 A' v# q: Pwhile [k < people]9 k/ H2 ?; H8 ?6 h" \  Q# v- c
[( e& |" m# _+ [+ F- H( ]2 l8 c
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)4 ^& t) D& T% ~7 l$ G; C0 x
set k (k + 1)# p/ X. C# Q; r
]
3 ^- @( f! q$ |! Zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- Y* E! r, _4 [) F1 |: R1 ^; F8 ^! zset global-reputation-list (replace-item j global-reputation-list new)* `  D' ^8 P' y) S2 g1 K
set j (j + 1)% S+ J" z' w+ ?
]" L* h  W* I9 Q  F
end4 q  d  _9 S: S  R
- t: A" f9 a$ G2 r/ p: s
; E2 M3 `8 i' i; ?

/ E. d+ y  W6 s7 S( }1 T9 Xto get-color
# f! y! Z% I* h
2 E1 I0 _7 z, V4 [/ wset color blue

* ~4 x. L; u  m# V8 kend
, ?1 s4 K/ y5 [* o
4 ?9 l0 _+ r4 S) @9 }to poll-class/ B: Q& T& R5 a/ U6 }( V
end
$ V* S2 ]4 V' Y( z* n8 K0 t% K3 {
- I4 L$ o# X/ s# x, qto setup-plot1
8 ~' h" T9 I+ U
& c  @* F  {9 Qset-current-plot "Trends-of-Local-reputation"
: y& K% s/ A1 z# m6 z/ Y
0 y& f+ w5 o* ~# M+ Z' E6 M6 w* R
set-plot-x-range 0 xmax
& B5 a' S9 S8 P
0 P  `- n, t6 A4 ^# q
set-plot-y-range 0.0 ymax
: w) d8 F8 E! L  c  L
end2 A. R7 K+ b% ^
6 v1 x- a2 g9 u# n% O/ u6 N
to setup-plot2& g- l# }% X# U9 a2 x1 _, U7 n
9 E( l; q4 h) k- \# a
set-current-plot "Trends-of-global-reputation"

9 x( A6 ]' g3 G4 U2 D9 y- w# a  f! w. U" @, s% j+ j
set-plot-x-range 0 xmax
5 j% B. v6 ^6 ]& v
+ h5 Z$ A; B( X0 S. _
set-plot-y-range 0.0 ymax
. R5 r5 [. @/ \$ W6 l5 D4 M, ^3 z
end! h$ Y" m# b; T0 V6 E0 K! S
: d7 d/ Z% F8 ^/ z8 b+ K4 _
to setup-plot3+ ^0 d% `* T( e, S6 V

" A" K2 O4 B/ v# k8 y9 [$ kset-current-plot "Trends-of-credibility"

$ v7 }& u4 Q3 F2 ^' z4 z! w' t
5 O: @* P. l/ N1 K$ z0 s4 ~2 }& H6 {0 `set-plot-x-range 0 xmax
7 u4 T, G* N+ r2 ?* ]( p) R
6 C  F$ b4 _' ]
set-plot-y-range 0.0 ymax

5 U7 e& h8 I7 F2 }0 B4 }end$ I- U% |4 \7 ^4 ?: V6 p8 N3 h
8 F/ }0 e2 n: W% T/ w
to do-plots
& @/ T% o" ~3 Bset-current-plot "Trends-of-Local-reputation"3 a  j; g) x6 `" I/ H
set-current-plot-pen "Honest service"
/ @, e! g& k5 Kend
. Y" B3 f$ V" O9 W% o
, C; }0 Q! o# I% q2 M0 U[ 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.
; O- k5 Z. }# o6 v. l. F
4 }# f' U2 \5 ^+ ^: L# t( @, ~/ \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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