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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:8 X( ^* _, ~9 ^  P  |/ O' \& |
to do-business # j0 D  y# ]6 s. D. J/ e. w5 @5 p1 y
rt random 360( o6 j; B# k  ?2 z7 N/ Q& @
fd 1
& @: H1 Y; r* C3 [+ n) j ifelse(other turtles-here != nobody)[
; Y6 f$ J; ]: @" r6 y   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.' E8 |. o, n2 }; e. X
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) Z* ^7 w* r% |  {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
2 ?: f$ c0 [. B  L6 Z   set [trade-record-one-len] of self length [trade-record-one] of self
5 `3 Q- \% t: G   set trade-record-current( list (timer) (random money-upper-limit))# ]" n- W& f1 M0 R5 y. X
+ r! v% C' S/ g' K: V
问题的提示如下:; y7 q& L0 V) w4 P2 M
2 r" }9 ~* a. y" D) z8 x
error while turtle 50 running OF in procedure DO-BUSINESS
- l5 c; q7 u9 A$ @5 g' i. b  called by procedure GO7 w8 Q4 f$ m/ B0 C# m0 p$ g
OF expected input to be a turtle agentset or turtle but got NOBODY instead.: M6 r/ {2 n; K
(halted running of go)
7 j7 `; t+ V# F! r5 p- h& D/ Z% u' y) Y
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~~/ }' w! I  x  P, s  s
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; r- a! ?2 Q: P; J9 k; u4 |
globals[8 e, X' J/ [- g3 u8 {
xmax& U7 z( W- N: m( u3 R
ymax$ s0 d2 x) J' ]  i6 R  u
global-reputation-list
4 g. u* U0 ^+ y
9 \2 [/ u3 v. W% Q- b! X;;
每一个turtle的全局声誉都存在此LIST7 e! K" X3 |+ C5 S7 s- r" @
credibility-list
+ s# l. N8 G/ @! k# w0 z6 m;;
每一个turtle的评价可信度
9 n( ]1 U' a! A! Shonest-service
- P6 q4 ]% w3 m- S, c8 }unhonest-service" `/ Q7 Y6 m1 J# i, s" T
oscillation' _0 q) R% n' w9 ^
rand-dynamic
8 C, W* w, e7 M" Z* ^9 c]
2 v2 X7 h' M6 e* |9 B; T6 m# g6 r( M6 F3 Y8 w7 D2 ]
turtles-own[9 e8 r4 y: q" h
trade-record-all, {- Q6 r) h2 J. r# ?
;;a list of lists,
trade-record-one组成
: q& [( L5 d4 [trade-record-one6 S) X; \- R1 |2 G# Y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ F5 f+ E2 ^0 i" E/ s7 P( ^( f0 T0 A4 M+ T0 [5 y( P
;;[
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]]
' ]3 Q) v: |% T0 \/ F3 J/ N( `" Itrade-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]
3 z' g% q1 {) p7 ecredibility-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list4 `; D% ]% q' _3 Q1 T
neighbor-total
. ~' f: z' k& p4 b& z( @6 _2 W;;
记录该turtle的邻居节点的数目
4 T) l# X2 q' Y$ h6 c6 M$ L0 ]trade-time
% W  ]' }3 T$ e' Z/ g1 ^;;
当前发生交易的turtle的交易时间- a2 v1 _( t2 _, P# D2 l- F: k7 B
appraise-give( Z# u* c- N8 L1 i; k
;;
当前发生交易时给出的评价1 R' v5 Q& ^, q7 C! j8 x
appraise-receive
) M$ |: O# |5 E; k; \+ };;
当前发生交易时收到的评价
( _; d- z" q5 y1 H/ G. aappraise-time
, |2 S/ M' m' V4 q* k1 }1 L;;
当前发生交易时的评价时间* {5 G4 K7 U) Q+ E" Y, B' Y. M
local-reputation-now;;此次交易后相对于对方turtle的局部声誉& c) U. E% J/ ]$ D2 i# V
trade-times-total
" o' A- a! T/ d2 o4 N% C;;
与当前turtle的交易总次数
  P5 C" Q. @, Y( l; N9 Y. i# Ztrade-money-total4 d5 F7 B" X- T6 T& J" |
;;
与当前turtle的交易总金额- w3 L3 Z. ]( Q
local-reputation" ^4 i2 a$ t( o  R
global-reputation
0 K) H5 P/ G( j# n" F; m1 g1 Zcredibility
6 _/ M% b5 D, m7 [' B+ o;;
评价可信度,每次交易后都需要更新
6 X3 y: l: y% k( {5 D; }credibility-all
5 C; g% l& D$ C% c9 E;;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
# }( L) e( |/ o: {9 N* q2 A0 O1 A4 m2 T7 t/ n
;;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
" A4 J1 ]: C) g0 O) M* p3 E. hcredibility-one
0 i+ {- s: X; U8 G# p8 I, s;;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people8 L7 c0 m/ v) k1 s
global-proportion) v' w3 E. t# V7 U. n  t
customer
/ I' n* v/ D/ r* ~, \, P) l. Wcustomer-no9 U8 a: d: g" E/ g' [, ]
trust-ok
4 K/ V; @4 ?& o: a8 ?trade-record-one-len;;trade-record-one的长度5 g8 f! e4 T- V$ |% q: ~9 o
]/ q" K- g, B" S5 z
8 ~( O5 G/ R. F. N4 z
;;setup procedure+ H, |7 g8 j& t. _2 x6 ]  `  H

* z! \' ~- |2 mto setup
5 s. b! K/ w" U! |% h
2 o: ^5 G2 H+ Q/ Lca
  W( I4 v8 V, i; j( |

6 B5 T6 z+ [6 E  S# T% uinitialize-settings

& E- |  K5 p- ]% `% V, C, J' P: f/ K- `  D5 S2 [! t
crt people [setup-turtles]

/ t* v. G# h" f* D1 }- a; d$ G3 e" M
reset-timer

. Q' j8 `) c9 i3 w0 q0 i
4 h! i; H9 R/ t2 Npoll-class
/ r0 X* m9 V8 Y9 i) {

3 \" Q" {( g! b( [. M6 G. I- ksetup-plots

  O5 E. C3 R1 x# C# G2 O: O' I+ W9 f! X
do-plots

% F1 B; G1 i" T* wend1 M* l, b6 N! S
4 j: M6 ^8 x& ^
to initialize-settings
, S$ A" m+ g8 m1 @: _- v) I2 j& _$ H4 r; _" H1 g% G9 b( C4 F" p
set global-reputation-list []

( e. w' o3 r, F2 f. Q8 \1 N- n. K1 r  X9 R7 @5 g
set credibility-list n-values people [0.5]

- E9 R# S5 x" d5 [) [% A3 \( v
/ r$ I/ a3 }( }set honest-service 0

7 G3 z8 }! B  l& I8 e. [7 Q/ T) K2 O* f/ I. S) T
set unhonest-service 0

) t( v( g3 j+ u7 r8 [$ J4 Q% p+ G- W
set oscillation 0

. d# j% u' C8 V/ `$ G8 m
% ~5 Z9 J3 z; g$ q+ `set rand-dynamic 0
* f; z( Y7 R$ Q% \! S
end& {4 Y4 _: [' [$ y
6 G/ K5 ]* Z; W. ?1 `5 U
to setup-turtles
1 O; `% _0 o* ?; m6 hset shape "person", r0 H. [" G2 m% Q; \
setxy random-xcor random-ycor5 l8 c0 N7 r2 h7 q& f8 _4 ~; r. k
set trade-record-one []' P" v# O; s, T: }, a
0 Y  ?( p. z2 ?" n
set trade-record-all n-values people [(list (? + 1) 0 0)] 1 Y' i% w  x" A4 k* d) c
1 J; e5 N, C' P+ x/ d- b
set trade-record-current []
% N$ c$ Z! o6 k, pset credibility-receive []
0 U# G, ~% o; u* Z7 t2 dset local-reputation 0.5+ `/ D7 v  |$ T7 P6 p) e2 _
set neighbor-total 0
4 P! i5 q/ L8 f* k3 k" Pset trade-times-total 0$ ?8 x" N; X8 ^
set trade-money-total 0
1 n) [9 B0 o" F1 jset customer nobody$ M/ y. W  Y1 L! F# P8 g. T
set credibility-all n-values people [creat-credibility]- x8 _; Q/ a3 W; b* [
set credibility n-values people [-1]
" D7 |" s# g1 n* Iget-color
7 c4 S2 f6 F$ f& t. K; D

/ t" I  G7 m0 g' W7 d7 z& g& Z' I" nend
0 A  B/ o6 N) r$ [; v: R' \: `; Q; @( w: v( O
to-report creat-credibility0 z1 f2 C) l" u% s* g' M! a& f
report n-values people [0.5]
9 ~' W  I; H3 h1 L- `0 C& hend1 y4 w/ U% M9 [) u

" _) ^5 y" i' s5 S! Xto setup-plots
5 X8 W. `( _! p9 ^0 D( u$ M: Q3 `( a: M/ p3 Y
set xmax 30

# G# a- Z: f/ N0 u$ L' x+ w* k* L) J, q8 z) a9 M! h
set ymax 1.0

( l9 G7 e( I5 l/ d7 ]* d
9 n& V1 x( {2 t- @clear-all-plots
& j3 {4 B8 T- U3 \8 f! m
' U3 M2 @; S$ x6 M
setup-plot1
) U! N' }" @, O

; G+ \+ `, D5 f4 Zsetup-plot2
3 ]& h' w, h8 i+ D* c
8 M7 _" S- h( E
setup-plot3

* l- b9 F: f# X# r- U0 a& oend* k$ |! I* G9 {& {/ z$ b# u; S

" b: w; I/ Z4 ?6 A8 k;;run time procedures* e. d/ |( N, ~1 [3 p
& u  T1 ]  d# o3 @# ^$ Q9 _6 u
to go9 v, @: _/ v: M" f4 i1 w
  Y( o& ^+ O4 I1 U8 o1 @
ask turtles [do-business]
+ ^& |6 c( {; X, w. r8 [7 e; T
end
1 l- q" g) I, F" ~; P3 B/ w0 {) |' h/ \7 U, `1 F
to do-business 7 l4 E, j: O  e4 X
8 H$ I9 Y9 J. D2 {* U7 }
# }1 \, I9 z2 f* a. l5 A6 w
rt random 360

/ ?' T, l" o$ Z9 I1 r3 \* O: ^8 I7 e% x5 {6 r
fd 1
$ ~8 F. S6 S; j7 \
/ R. y+ n' w9 o) [
ifelse(other turtles-here != nobody)[
# ?6 L$ I% I8 ^) I  @6 P
+ K( F$ o) _" O  N. `% ?4 |" L
set customer one-of other turtles-here
# I* Q* Q" Z8 N$ V6 P' D6 O" M& I# v

6 ^1 Y5 q; ]8 {5 V! c$ b' n+ Z: V;; set [customer] of customer myself

, \' W- U& C! f- c: g% k( A8 O  d" F
' `! [5 [' k7 K6 Iset [trade-record-one] of self item (([who] of customer) - 1)
8 m+ t, C( W% d7 n; V) F! @[trade-record-all]of self
0 S" f: [8 J) d( O;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 h) S$ Y7 O% k7 V' [  P4 b* L, T7 ]# H
set [trade-record-one] of customer item (([who] of self) - 1)' w/ U9 V- T. h# b
[trade-record-all]of customer
7 r, ]) _" z4 u- \/ g9 o

( E% j4 A& X$ z- xset [trade-record-one-len] of self length [trade-record-one] of self
/ ]# S- `6 E, W, Z# M& ]( p

: J$ x9 s4 W8 eset trade-record-current( list (timer) (random money-upper-limit))

! @( y1 O6 E3 }9 y6 O  }5 f7 ?; ^" E9 y# p
ask self [do-trust]
' T3 x' p" P: G7 f( U;;
先求ij的信任度
% M: \% G$ I9 q' c$ Z
3 s1 j, s8 a+ r3 t* wif ([trust-ok] of self)
4 o3 D/ I, J. {: K# S& Q6 a. j;;
根据ij的信任度来决定是否与j进行交易[, ?2 w% w4 D1 c$ t; q' j8 N8 [& I. K
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! O2 _3 V" S2 o, s9 j
4 d* W0 P2 ]+ o* O: E" e
[

- U( N7 W, ^5 D, c
+ {7 c/ T& l& a5 ~4 Hdo-trade
  E0 k" Y: o0 _# r4 g2 C0 [. |
1 f. X; T6 n' j2 Y$ Y
update-credibility-ijl

9 R0 ~. y6 b# x# k3 J. H& ?& v3 v" l7 G7 E4 G. @
update-credibility-list8 p$ j2 b3 L. r1 y% G) l+ Q

) d/ j$ Y! g* @9 z
" f6 ]; S4 L3 n# L  E! C; Fupdate-global-reputation-list

2 V- s) M8 P& Z7 L- \% c
. z& J$ w7 }: }8 [# ~1 A  Ipoll-class

8 m( x6 v0 e* C, R& ]
$ Q7 q6 R* P$ M! I3 _" V: U) a0 o" Nget-color
, A. j2 k5 x* \& s+ z( k( H

2 P) \0 ]7 M- ^% z! p]]: r" v$ W) L, E" }, H

( b& x" [1 B. Q;;
如果所得的信任度满足条件,则进行交易* E; g+ [0 c1 p. i8 C
% R8 P# `6 T% \
[
$ }0 Q' @& H1 e  M9 D% B! y
; a9 q/ `3 |+ S8 ~8 [
rt random 360
/ }& k* T; T5 ]: z3 f5 Q
$ \; s' v0 D: H! X1 c$ _5 t
fd 1
- R7 }/ D7 T! \- {
& e% v9 M  [+ l2 ~% v
]

- }1 m% X+ E! i% z
# a4 u7 G3 G/ N6 t" ?8 ]end
& e( R) \1 l0 {  C
+ L6 D0 e) X' C0 v" b" K8 N. P
to do-trust
4 \+ w7 C  v8 ^- o. s' Iset trust-ok False$ k$ ~; M6 W8 \

! [' M8 }5 x4 ^3 i( @6 h

8 J) u" R" m) Dlet max-trade-times 0
. O3 _) g+ j6 @+ tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& D/ s/ G8 G1 R  p! _$ T6 j: llet max-trade-money 0
$ _. n6 A/ l- M% W) c% f. Wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; G& b" R5 Z" m8 u# T* s. l/ Elet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 s; j" H3 T3 w" s" }" ^& u
% B/ `" a( `3 }( {- r

" x% H# h" T9 U0 k, t8 nget-global-proportion1 w+ H% o; Q0 S" @
let trust-value0 N# c9 ^1 \% K5 i- ]% n
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)
- y3 H/ m% [8 _  w; t3 c
if(trust-value > trade-trust-value)
6 C1 q8 d% e6 D* x# Q# |% m4 k[set trust-ok true]
8 z" h. r/ ~% o! Wend
3 }1 {6 I; I( J4 |3 D7 `7 ]: E; x# o2 i4 V+ e' s- P% w7 c& h6 F, ^
to get-global-proportion
: P- n4 C& i4 ~; W; Tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 }8 h- L! D; }0 N* [; F( ]
[set global-proportion 0]
9 w: x" O' W9 ]% l! [% A[let i 0
0 {2 p% j# v) L7 @7 D2 X, W" Clet sum-money 0
1 h- b% X& y* {' U5 D( H$ ^* Dwhile[ i < people]
9 V% m8 f: F3 Z- T. e[+ S* R( q7 Y& T: k* `" C/ ~
if( length (item i
& o9 n! b: C2 }+ P" M6 _( Z[trade-record-all] of customer) > 3 )

  Y2 X( B/ s4 B9 u. T2 y7 _$ q[
) q' ~1 l6 K# {* F+ [  ?& eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))) x+ ?6 A  q" w) M
], J# x& n5 `; A1 A; @7 `
]
& M# s0 w, D/ _* f$ r: H! ilet j 0
; N( N& W5 k) b/ }2 N, t- W" d9 Ylet note 0
$ A6 p9 E2 t5 V! lwhile[ j < people]
4 P, x/ Y4 q: H7 l  f$ j[$ Q; i5 k) S, \( _
if( length (item i& }( @% ?- ?# S" x% z
[trade-record-all] of customer) > 3 )

% `' Z; l& W4 ?[
4 S" f1 S5 L" Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); e+ r5 A  z6 F
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) v$ q/ ~6 n# f" U/ o0 E* u) p
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 V  o' W( g1 {; t! u% g/ G# F% b
]' Q3 D8 I& z4 i8 t
]! x; {$ p5 e5 i* m, g
set global-proportion note0 O" m& ~0 `  N& e( ~5 x; s5 b
]- B7 N% E% g7 V6 ?; d
end
0 A/ X( c4 |+ ^9 V: h  t) k
1 e# }9 f7 f7 t/ _. O) o: D# zto do-trade" c; K6 x& W- R9 \+ \
;;
这个过程实际上是给双方作出评价的过程
% f7 I- }+ m7 Q7 b, }: eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 n, W" U/ j$ ?. D) M' T+ xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 g1 d0 r" x4 y0 A) i7 x; p
set trade-record-current lput(timer) trade-record-current9 W; R2 I; K9 N# Q1 `. b6 X
;;
评价时间
8 r4 t3 h2 P  _& @ask myself [
/ A. y7 Y0 h- Q5 i" n: W/ t8 pupdate-local-reputation* U* s1 N! Q+ m2 D1 i/ e+ S6 w
set trade-record-current lput([local-reputation] of myself) trade-record-current
) ^# ]7 {+ V6 B2 f( S6 q4 p]8 R" w6 d! f9 `% W: I- m' b  q! F! T; W& J
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# U' ~$ r0 _& q! _6 W;;
将此次交易的记录加入到trade-record-one
4 f  F% h3 ]- W" t4 q4 [# P% F6 wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# z7 R4 Y1 e2 o) ~; v+ y7 A$ q2 V
let note (item 2 trade-record-current )4 S) g0 e' D8 @/ L) F0 K
set trade-record-current
, L# E" t  {3 H2 p/ s4 q) `(replace-item 2 trade-record-current (item 3 trade-record-current))

" I4 B  J! q3 y" d9 }; R4 yset trade-record-current* B8 R  _, }8 q3 J8 C! j+ m! ^
(replace-item 3 trade-record-current note)3 u" O+ m  ]( K7 h! H4 ^/ F$ B
( _2 X8 l  n4 o* O
, M& F6 y0 Q7 q, [: H2 @2 Z! I% D7 Y0 D
ask customer [
& q& m' ^' ?) j) U8 F& h: v% I& f) H; Q3 Fupdate-local-reputation2 @; H) {4 |7 l3 A) H" D( x
set trade-record-current% q& P7 Z  h* j: ~
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 Q* Q7 Q9 ^7 g4 O9 q6 }]
- ~% R5 n( a+ ^, B: [6 d
0 P1 a) Y/ M' m0 {( J5 I9 R
- t8 S0 |% S+ Y; k. L6 @
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- @" o& h0 \+ d" U: f

6 W% ?: I! u3 p+ n1 \8 T0 [9 i+ Hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" g' h+ n& j- P;;
将此次交易的记录加入到customertrade-record-all
" ^- J- Z* t) w" ?' e' D; Tend( \# \' T+ o5 a$ i7 ~: k6 W' @0 m7 g

8 V3 i9 h+ [- H4 ~( G& zto update-local-reputation
, `- V) \( |- S% e" Rset [trade-record-one-len] of myself length [trade-record-one] of myself
4 J0 d- V7 b  O4 q0 \* c1 v: |' {. D6 |9 ?/ `, A5 ]

. s2 v% a- }8 V" R2 d;;if [trade-record-one-len] of myself > 3
/ F+ d* i8 {5 B; h! s, U3 `5 o) J
update-neighbor-total
! b0 @4 p/ O/ o7 A1 ]0 h: [- p;;
更新邻居节点的数目,在此进行7 ^8 u0 {/ R: u% y4 _5 {" d
let i 36 h" i7 r- u3 D" E
let sum-time 0# z/ {: ~! \$ z$ W! K8 a
while[i < [trade-record-one-len] of myself]
( N9 j2 l* z, J- |  u4 z% }( l[8 y" y" X4 q* D# W! M6 v- d" G9 K
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
8 J: A9 V& U% ~) I' aset i
+ F# q) d0 }9 E' \' Q( i + 1)

3 u" d5 Y; f) }; u$ L]2 C; Q% N7 Q0 c- s! P& W" h
let j 3
* n7 {! Q/ L2 D. U% @# |/ d. ^let sum-money 0( W1 _. }+ F6 p) u) u
while[j < [trade-record-one-len] of myself]" z9 A! l% u6 W* k
[3 a! i0 x- V# W# t- @1 V1 R
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)8 j: x! f: D  w& W) @
set j
4 n8 ~8 ~0 @0 t" T- b( j + 1)
  `+ n7 U3 [  S
]9 R* U$ ?, G( Y' o2 m# [9 r, S! s
let k 3
( j% f3 w% ]/ U8 b8 h+ I) ilet power 0
% p  V) ~$ W& n9 Vlet local 0) A! h* H' ]' n5 K/ l% @
while [k <[trade-record-one-len] of myself]9 [0 P* c% ~7 w
[! {6 q3 U' v- j1 o6 C! p8 F
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) 4 f, b$ U, W$ N" R3 `2 l/ Y1 |0 |
set k (k + 1)
/ m% s  v$ ~2 P+ n1 ~0 d]5 K4 m. t2 w7 {3 @4 N: C: Z
set [local-reputation] of myself (local)
6 r9 H4 u3 E8 G7 ?end- s0 [5 T2 p; _2 u, Y
# z1 B# t- ^  w' A/ c
to update-neighbor-total
+ o; |: F' m( C' A$ T; g0 F% C' a7 p3 r  U$ b$ |  g
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# N' g& s) {. o' x, `! w  b7 b, L' t
1 i0 k, P* _/ G2 ^
" `+ D8 ?, l* Z# V# ~- N
end8 ?  S5 }; V2 I% k( J- K* S9 y# M

2 [2 A. \; H. c4 X9 _! Vto update-credibility-ijl ; D8 S' F; n( H
! G& B2 S7 U- n5 |7 m$ R
;;
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。$ s& Y2 ^* e. ~# C8 |8 k
let l 0& s6 j" f3 {% L% i: C8 q  i
while[ l < people ]! p9 X6 l6 L6 m1 |. }
;;
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' c* D% R- k1 {3 n2 N- T* j
[6 M3 q7 L0 [- H( k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): d+ C4 O; h! R) ?3 i2 L+ t4 n* I0 `
if (trade-record-one-j-l-len > 3)$ b  F, {  z' T% o
[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) v) g2 p* u+ Y! d9 x! j: L
let i 3
" q: V. x6 ^- v8 m& xlet sum-time 0* g( Y2 B# b: o3 K: d, r
while[i < trade-record-one-len]
5 r6 ]+ N% r" q9 p4 j; R* e4 k[
% W" \6 r, o1 A, l' \( f/ {set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 v1 `- A" h8 E. X( T
set i
  }, v9 Y$ [; V$ A6 F( i + 1)

7 A0 ?4 B* f/ j! [6 o1 ]+ E]8 k6 V) v. o9 y& [+ \( p) J
let credibility-i-j-l 0
! @: F# p; t! ]9 W' z9 \8 Z: w;;i
评价(jjl的评价); Z: G: J; s9 t
let j 3( v! v  D5 l- c# z% G
let k 42 N7 P" A  B8 {+ s* h1 N4 t
while[j < trade-record-one-len]
; {8 {2 q! {" d7 y7 E7 b[' g8 F2 p& j6 ~7 Y7 x* `& z2 q  }" ^9 {
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( f" W8 a- g! q
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)/ g, K3 ?9 p9 f* h6 z
set j+ k# V! l3 U8 M! }; P
( j + 1)

. F7 h' K: ~& w( f% a]
$ c) V# ~6 Z& ]3 _7 w7 N" w- Wset [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 ))/ U: i3 P2 n, S2 c
1 b. n9 C% R8 I/ D% E
5 B1 m6 y9 w# w
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); Y3 W+ p* J# H5 _0 M
;;
及时更新il的评价质量的评价- }! F6 @  X' F" A1 R6 G) `
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! e$ |! `$ h$ Y* ~- eset l (l + 1), b/ u6 p: V3 W0 W
]+ U; y6 E: n' _/ A  k
end0 K7 Q- n7 t5 J! \1 ], H; _- `
0 I5 E) E1 r9 G% \& o! `; `
to update-credibility-list
5 i% E) w6 u) a8 }. Ylet i 00 }' G5 \; N. g3 Z! Y' c4 y4 y
while[i < people]
, S7 e; j+ }1 q7 V/ V6 P4 t% R- q0 ?& X[& M4 f2 ]) g/ }1 N7 D
let j 06 s3 C2 f3 ?3 c/ M' q
let note 0$ N. ^9 N+ c# b1 V) T$ ~9 F
let k 0( R. g2 T7 B& m2 y2 I. E
;;
计作出过评价的邻居节点的数目: T, s# G' ~' _9 s
while[j < people]2 K4 j' x6 M6 N4 N: J, }
[8 P, y) U5 S1 ^! ~: }- v; ?
if (item j( [credibility] of turtle (i + 1)) != -1)
8 H, w7 U+ _2 ^: y& l8 W;;
判断是否给本turtle的评价质量做出过评价的节点) @# V6 b4 X; [6 y" \5 I% F& q. R
[set note (note + item j ([credibility]of turtle (i + 1)))' Z, p/ t; x% n# U3 W+ @( r4 z: ?5 _
;;*(exp (-(people - 2)))/(people - 2))]
9 h* |; L6 W, o1 _
set k (k + 1)5 I6 I' @8 k' L  e$ u1 K
]4 t/ i: W7 w5 ~0 W' D8 `+ g  s) m
set j (j + 1)
; j, s; h2 K$ `; Y, w" P4 j]
. [9 r  f  `/ q3 T+ kset note (note *(exp (- (1 / k)))/ k)
3 r5 c$ I9 `8 M, }* pset credibility-list (replace-item i credibility-list note)' k% d  v; j' R0 v4 F& J$ j! [
set i (i + 1)6 R0 T; Q. L  ]4 h9 o, @& _' r
]+ X* U, W+ q6 m$ J0 i
end
* O& F* c8 P( e4 s+ u: p5 V& e9 |& s- L3 q+ A
to update-global-reputation-list
( q  Z! V1 L, u+ Y  o5 clet j 08 l% l7 R5 {5 K, _5 Q' `9 n: H
while[j < people]
% B7 }# }( I2 s% k4 i5 g  M[3 p' O& `+ T4 v& s
let new 02 k. f" h5 H' L
;;
暂存新的一个全局声誉, [$ N7 M- K& _3 w. y+ U( L
let i 0
5 k: E9 Q- [' N+ \9 olet sum-money 05 ]; L3 G  Y% m( j0 }5 \
let credibility-money 0
3 V$ A7 p- y8 q6 q8 k9 ^* ?4 pwhile [i < people]
9 S) g& `' ~2 e. V+ T9 K[) Q. ?+ Z6 X5 _1 U! n
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  Q+ j& g2 ~" o9 B1 S- \1 aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), z( r  ?) B% V) [
set i (i + 1)( b" R$ S4 ?6 c  \$ s0 I
]4 Z$ V6 k- l$ X  n+ v  o8 }
let k 0
( j6 r4 J8 A9 B" ulet new1 0
' t2 S1 l4 |, w$ A/ Z  F0 \while [k < people]
8 t2 \& o" Q" N' i, r[" k+ j7 M) @+ P# M! w* T; e5 L
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)* M1 S" v- N" b# q! q, r+ l" ]! _
set k (k + 1)
7 W$ C8 n9 M/ X; z' S]2 e" h3 H" k0 W
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" t2 V+ X. r3 I; }+ vset global-reputation-list (replace-item j global-reputation-list new)/ ^8 N1 c9 U( a, G
set j (j + 1)+ Y* `5 Z: Q# J& a% v
]
/ n/ x0 {* A" X* c# {- Z8 X1 Wend+ [: W4 \5 h' y  @, I
" Y" f5 T1 r+ a) R4 G2 F

' H) J/ z2 B& g7 ?/ m# A& d
. y( y! J# T5 N4 k7 I& b  Uto get-color
. d/ b6 O, O5 }& _6 k" ^
$ l8 \! c( R9 z) \: \/ F1 E9 W& Cset color blue
, [$ {, @$ f2 Z
end
" P, c. L+ L) L6 ]. V+ ~5 p& Q* G; Y: W( u6 |# b4 f
to poll-class$ l8 |* u2 v0 M$ j  ^, W
end
7 Z- |; o& h5 y+ }4 D: f
! }; g. i4 B4 }to setup-plot1
: n4 y% K. h- f" f; {$ L
% s! ~9 n7 `3 y3 f2 O2 ~set-current-plot "Trends-of-Local-reputation"
6 K1 w7 \6 P! M( a* d' G

9 }, u) U8 ^* @0 p0 B* wset-plot-x-range 0 xmax
9 V8 D  Y3 X! B  W$ J: q2 H
4 K. X7 U" R5 t0 e6 L# F8 R4 E" d( P3 J
set-plot-y-range 0.0 ymax

3 p& F+ @, J( T: M( Z  mend1 R# Y- h) V  v

5 A. ?% }) w+ ^7 w$ Wto setup-plot2* v" k( k( x4 h% Z

, X8 j! a5 @1 H, g' qset-current-plot "Trends-of-global-reputation"
8 v7 q$ x+ k! p% p3 D1 u

9 v# V5 k8 V' kset-plot-x-range 0 xmax
% s0 P5 u! ]9 |1 J
' h4 m+ u- H# e4 D
set-plot-y-range 0.0 ymax
* [% e( O- B  X3 Z4 k
end
. J6 o3 b) n' [$ X7 a! E; {4 f" N: n+ z5 E8 R& I
to setup-plot3
- L3 j, `9 n% _! o; |3 K/ A2 d5 t4 G- ]# V+ `+ C
set-current-plot "Trends-of-credibility"

9 C$ \) j4 f3 @2 j+ y+ l) q; {) |* m; s2 O( U$ c
set-plot-x-range 0 xmax

4 j% Q2 m, A5 H. c0 |" D4 p  i0 |
set-plot-y-range 0.0 ymax
8 u% h, X: u9 o, W
end0 {% l9 _# U" Q( _* L7 n" r" ]

, [% s8 h3 T9 H7 m' @: p* G- Q1 ito do-plots
& a5 U- ]0 Y& J% u  v( gset-current-plot "Trends-of-Local-reputation"9 l. P: T3 G) ~* ]2 A* z; H
set-current-plot-pen "Honest service"+ O6 J4 Y3 d6 @: L# Z) C+ n
end
1 l7 G' y+ L4 u+ d
) P& H9 {5 X0 E( A[ 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.
* K% w( S2 b8 W  T# \2 l" ]( d* j  ?
+ A3 I: f* S8 J0 n6 I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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