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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:- q. j0 e" Y! m, w0 M& A% W0 L
to do-business
. B+ Z9 U/ y7 t5 O8 o* E6 ? rt random 360  @) F% g7 ?& W, q
fd 1' |; {* T0 l% |3 y* P
ifelse(other turtles-here != nobody)[
9 e& i( j' l, C) q# {   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.
9 f5 K* y/ f9 D0 u   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + e/ s, y) B" X% G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 s& T* }0 O- P8 S# h6 P; ]   set [trade-record-one-len] of self length [trade-record-one] of self* p& W+ `1 P- M2 ^) Y
   set trade-record-current( list (timer) (random money-upper-limit))' L  k4 Y5 n8 v& Z# V. [* \

5 W# o. Y* w! M1 I! r( q1 I% D* x问题的提示如下:
; k8 ~9 L4 ?) J: s7 A
' D' V# ?7 l# M: N7 H7 T5 u6 Gerror while turtle 50 running OF in procedure DO-BUSINESS
3 Z$ S& b/ w( H! s$ S! A" z  called by procedure GO
: c) f5 Y; l; V9 H3 KOF expected input to be a turtle agentset or turtle but got NOBODY instead.
! n1 D  l, Z! O0 N3 q  w
(halted running of go)" W9 C, _1 h+ F! m& s& |* ?% `! T6 e

9 L- z0 j( I3 ]' n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~~" E' e/ Q, C1 {
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! L! U3 x% f. M/ k
globals[& K6 b* K& s- A. a8 R) f
xmax5 k% ]) e9 f0 @3 h
ymax& U6 b% H4 P9 G& L( J+ M8 Q
global-reputation-list1 d1 p3 s( m% r* e. K
; s$ r5 F9 e. h) P3 |
;;
每一个turtle的全局声誉都存在此LIST; ^, Y* G9 B  [* T8 i9 U
credibility-list
/ x- c% Y* c$ G. O8 K% c" y2 _;;
每一个turtle的评价可信度. v1 w$ Y/ m; L
honest-service
" T( |9 v  Y# _% Yunhonest-service
! V( B$ K& L; p: yoscillation4 e& U/ v- u' \
rand-dynamic3 D! W: D3 T8 P  K
]
; y  }, ~$ I8 {  y5 P; c# e  J' l
; w/ `! i6 [6 X* Q& U* cturtles-own[! [1 R8 x  z6 B$ ^" f- I8 [
trade-record-all
! T' Z3 x" U0 U$ |;;a list of lists,
trade-record-one组成/ n! u; ~. @2 E6 n
trade-record-one2 a/ j: d' Y5 p% _) T
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) x# I* {# g4 Q" j9 s5 a7 J4 v  c' X- ^% t
;;[
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]]' ?; s0 p. s: d% Q
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]
1 z8 y, K2 V' Pcredibility-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( k0 W( m/ v+ V3 Z6 A
neighbor-total# \, J" P9 Q* `* ~; z
;;
记录该turtle的邻居节点的数目
3 ^, h& E  d! e% B4 X" b1 m( |trade-time5 Y8 D1 u1 o$ i0 ?& r
;;
当前发生交易的turtle的交易时间
$ }' `* o& F6 t# b# n3 \+ sappraise-give
7 V$ E3 @2 {& \; w5 R4 o, j;;
当前发生交易时给出的评价
- N# }# n; R; w( Eappraise-receive- o6 Q' k- l- L' F
;;
当前发生交易时收到的评价
0 a3 @8 I4 l2 ]- K' J- Y$ Zappraise-time
8 d1 |  E/ D# i; H6 q, ?  j;;
当前发生交易时的评价时间. G, a& _( @$ S. P, }& ]! d2 M. w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- L9 M4 E+ Y: M& @& q( otrade-times-total' {( L, }; q, |
;;
与当前turtle的交易总次数
$ d; t8 q6 H/ m# h" @+ G* atrade-money-total
! s0 Q$ G  A/ u$ N! K;;
与当前turtle的交易总金额/ w4 H3 [5 @$ X( O6 W/ T
local-reputation
7 R. q- x: k' |- G. E! r* Iglobal-reputation( ^, f2 c1 P! ]7 a/ y; e( S9 H
credibility& a7 |/ P" V  Y+ R2 }
;;
评价可信度,每次交易后都需要更新
4 E; B3 B4 [# K, G9 `* O1 |credibility-all
' X( o! D4 R% K0 G4 g" x;;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2 G4 {7 {7 p7 M9 K: P* d
& d" c) r9 M/ i3 O) C
;;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0.51 x( c0 D6 U% E, O8 w4 \' r
credibility-one" g+ f5 u; f/ @; M3 s/ s( i
;;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 ?6 q, x# v- C( D2 ^
global-proportion  @! n) T4 y1 U$ E* y3 y
customer7 S9 T; ~8 y1 Y) ^; }) W  l$ y
customer-no
5 U9 u2 Q3 N+ s6 Atrust-ok
* J7 {' ]* Z  i- i2 mtrade-record-one-len;;trade-record-one的长度
, k; X& l# n9 p8 j9 X( M]5 J3 U: \5 I/ K. V. B
6 }1 W/ }% Y/ `
;;setup procedure
  E7 W3 d+ g/ f4 R
" J0 d2 x9 Y/ @% A! H. Lto setup4 d/ y4 C# W" S

5 F' k# q, O( g) zca

2 L) ]2 ?" C& Y& p9 e' u! K3 t
2 R1 X" ]# m' E) |' F. B" _1 yinitialize-settings
1 @3 q, H7 _6 I2 _' f& g& ^5 W5 o. N  O

* p: Z3 Z/ m& W/ I; acrt people [setup-turtles]
8 Z$ |) H/ n: m
+ Y7 i8 X1 d1 T; \
reset-timer
: ]  W* v# H' f8 n; Y  d' W

; p# _/ f" k% V* `9 jpoll-class
" b* e2 f6 i  ~8 ]8 N
8 b, Y, R# L+ R& A
setup-plots
/ E5 f, `) r8 W" ?4 E

. M  L+ C2 ]3 r6 ^do-plots

6 F* [+ L' P1 Q: H4 _end( T' d1 a, L5 ~5 ]! ]& C/ k- l
/ x3 P  N1 P$ t7 I; w& Z+ R' t
to initialize-settings
4 j3 P1 d$ q  y. h4 e2 ^2 d$ }/ B  n4 N8 }3 K  _
set global-reputation-list []

; |$ W6 @0 w1 p) f# `4 Z- c) f" v$ L, W
set credibility-list n-values people [0.5]

/ Z6 E: W( L: N) f2 M1 s  f# ~9 g8 ~
set honest-service 0

1 s5 [& y5 w0 a' P
! h5 T$ d# w" C3 U6 I" }set unhonest-service 0
9 {, G7 ^$ T1 ^# X

9 y5 ~5 ?" {7 |7 m+ Vset oscillation 0
7 s) y& N* |. O% Q) i$ B

( |* T6 Q( _& g. a* _# H& jset rand-dynamic 0
! h& C. b$ D# N. G# z
end
, ]! k5 m7 r. H  S
6 p0 [' F. k" C3 D4 Y( m1 ]to setup-turtles : b5 [4 ^1 ^' L/ o1 ?+ D
set shape "person"3 t* ^8 m1 h1 v4 y! P0 n. M. @- t5 v
setxy random-xcor random-ycor
7 o/ Y' j+ h7 S: _  _, W8 W! Qset trade-record-one []7 l8 g1 o  y) {6 j
: _# T: [- Z! p+ r
set trade-record-all n-values people [(list (? + 1) 0 0)]
! |; p. J; F' s+ d# e1 g' |; A

) \: M% l+ M5 @9 M* F$ cset trade-record-current []
4 C( [$ f$ x% I. c6 V& ]' Y* {# B) Aset credibility-receive []
7 Y! O! }! N+ b# z+ pset local-reputation 0.5& o: z/ u- ^) a5 I' j3 I
set neighbor-total 0! O+ u# s# L8 V/ c
set trade-times-total 05 e5 I4 K8 S& D+ c. Y, o* z- b
set trade-money-total 0. C) a2 x- F' ]  H$ A! r; z: W
set customer nobody. V/ O7 g- T8 X+ X4 A: g' ]& f, _8 {
set credibility-all n-values people [creat-credibility]
% |0 ~- ?1 r" Rset credibility n-values people [-1]
3 x, p5 e8 I! \% {" @: X! Xget-color- @: K" A6 G' F
* {* C, X1 c. ~$ i( {- P
end; @' c: t6 |% u

" p! j: C1 }- N! `8 ?to-report creat-credibility
* d# ~! d& P7 E2 y% s( areport n-values people [0.5]
" K( H8 P) y$ m9 y9 q& d! o9 xend
! a8 l) f( _1 n; R( f
5 P8 G# e* Y# v5 G! o; W' r# zto setup-plots4 Z+ j! u' U& r5 J2 X% ~9 s7 R

6 c9 K) s! s: F. Z& C$ Dset xmax 30

( b) Z' e9 x$ Q9 ^
! y4 k4 I& d' Y9 G+ T1 e0 W5 u# P$ {& cset ymax 1.0

$ p# ]8 A9 S0 c- ?1 ?( d9 t: A+ U+ \0 T
clear-all-plots

+ {& C+ _; s- z5 t
" }% A' q) q& s% X9 O6 dsetup-plot1
) b: F: V. L6 R3 e9 v5 S

+ V& \+ q5 F5 `1 r. Wsetup-plot2

- a* G8 `& y( {5 F$ k! U) u* v& i/ b* S* ?& A" k$ d: h: `( z. m7 u
setup-plot3
' Q- ^, w& O- L5 `8 T
end
6 Z" f3 k/ o' r0 p3 Y6 l: Y! c: K2 g* @  A+ j
;;run time procedures$ J: o! Z4 c( N0 c) S3 N

- c7 R& N# b2 }; e7 u. N0 @) S$ kto go+ ^" I7 [' e" \7 J6 {: c
" e6 q/ p8 L% i7 g' e& u
ask turtles [do-business]
" ^1 K) }1 `2 ?5 j0 h
end
9 L7 S8 q" D3 B: q7 G' z5 p8 O$ Q) J- M  \- o. _/ a
to do-business ! Q) x7 n1 ?" d
# N/ |; J. J9 Y% n5 S, p" D' [

! U7 [* b  a9 q6 b4 X; V' krt random 360

6 n/ Q9 ?/ W. ^( ^# \/ R! U" A! |; Z1 o+ L0 Y; h; V: q- ?
fd 1

# ^9 ^6 A5 p, n& Z2 k
0 h! g' t0 C/ \1 C" p% Lifelse(other turtles-here != nobody)[

& C! m% \/ B; i7 [4 [" d, ?* s  J1 c
  B1 r& t: w# ~& j  u6 f# ^2 ?5 c1 @set customer one-of other turtles-here
3 \9 i2 l5 x. G8 X1 I4 F* o
" N" N& z: {6 J& s0 u
;; set [customer] of customer myself
4 `8 a+ S0 C9 t& b8 T+ \# d" c
- z. }, }$ {: Z1 p% b% g8 y1 C4 c
set [trade-record-one] of self item (([who] of customer) - 1)
+ [9 x4 W2 A+ s4 V' z5 o6 w! X[trade-record-all]of self0 x+ _9 |8 @) [0 p6 c6 c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 E2 ?# q$ Q# W8 r

* k" `* G" D& Aset [trade-record-one] of customer item (([who] of self) - 1)
, o0 W4 t6 C: p[trade-record-all]of customer
+ u5 S" r: q8 p4 H( V: c6 {
# \1 \8 e) W1 Q5 k4 h4 t! P
set [trade-record-one-len] of self length [trade-record-one] of self

0 Q4 D2 M8 i" x! j; r1 s& [3 V8 S! g& r3 Y& S/ O/ d: B+ n! `5 m! c
set trade-record-current( list (timer) (random money-upper-limit))
3 R' ~% `1 o  J4 \5 ~7 D6 ~! z

4 u& K% I" [8 y% m6 Aask self [do-trust]1 r) f0 d4 V# F3 e. e
;;
先求ij的信任度# h1 P: V# H& {* G" v; s) e. F& |

5 \  u$ O( }) j+ v- N' Mif ([trust-ok] of self)
! S# L' W8 u  L- f' ^  U;;
根据ij的信任度来决定是否与j进行交易[) A; K4 s$ H5 P" |' {7 P
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
% v+ p  C  f/ O7 N0 K1 i3 \
8 B' b  J5 Y1 X! s! _[

9 i( A1 n) ]/ T. Z1 B  F& z( p3 Q) ?7 M8 v' h) y, y
do-trade

3 k4 F" e0 E1 G' B. O! v
# O, P8 A/ K, h( D1 ?9 Pupdate-credibility-ijl
/ ^- R6 V& m! U( r3 ~% F
1 j- U# Q3 Z) n+ j" R
update-credibility-list
* K% N2 P6 A$ J
) {1 S2 t2 H& z# W

/ v1 j$ ~. i" d  uupdate-global-reputation-list
! {" Y8 q! q4 a

7 [3 L) o3 X' ?; j; H, B1 spoll-class
/ p8 C# r3 B# l8 v! B

: f9 z& f7 v* g2 V) `7 f9 X. Kget-color
, e: U2 ~) p+ h# r+ b4 e8 Y
* C. `* r# w0 g) i" z! S
]]5 W9 ]0 f" j8 n1 p
2 `1 u5 j* x0 N  e. ?: X2 j& N
;;
如果所得的信任度满足条件,则进行交易4 E' e  C" f8 W4 l9 }% P4 Z
8 [4 z' j- V. l) t# p% A
[

* X( G( k2 A3 r8 w" V/ D3 \- @% V: H# Q  ^
rt random 360

) i& k0 _& c, m4 |! A' H
7 n! T7 R' f" ]7 Mfd 1
! y/ I8 i+ G& s4 N' E

$ h# \5 j3 R! U6 P9 C/ y* d7 Z: I]

( [% C$ v2 u0 O5 l. B5 K& F2 `9 j# G3 s: ]+ b
end

" |6 a' {, s5 s# @4 A2 U! J2 E% z- N, H! q
to do-trust 9 f! p- a  Q; P0 S% J9 k7 ^
set trust-ok False
  o+ w, e! w2 B0 I: z
3 Q! h$ Y8 V# b3 L

0 p$ v2 d; ~, T5 p2 klet max-trade-times 0
' Z1 K" D( j8 o0 J8 k  Lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, N. n  e9 i% ^! l8 Flet max-trade-money 0
: }5 k+ T9 I/ A0 [5 V0 Hforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 P/ ?/ P/ j$ \let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), y9 y7 o% ^. U1 X0 x& Q" a
0 w# d$ X2 i; j3 x

) ^7 B4 [( F, s! Qget-global-proportion% K( T" U% \6 P
let trust-value
* l0 g4 [1 N7 X( Z' g. Y0 k) Hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
- k1 I. p* i1 s
if(trust-value > trade-trust-value)5 n! `, y+ Q" W
[set trust-ok true]. ?: P" P& ~, |6 T+ b
end' ^" v+ ?7 w7 q, t' _
6 Y9 P+ \% S2 }: e: B
to get-global-proportion: B1 d# Y# ]1 J, W7 m3 {
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 V4 s7 }8 _$ ^6 x6 u[set global-proportion 0]
& `7 a) S! ]$ O7 x8 X% i[let i 02 }: q) g, u5 D9 r
let sum-money 0: B$ N6 T+ n' J
while[ i < people]
: Y1 O5 f4 ?' I[
2 J3 X9 p9 Y, Bif( length (item i, T6 ~) c8 u! S. q
[trade-record-all] of customer) > 3 )

: t  n1 o4 N7 R# d' w# }[
4 b7 g' Y( T: C, H7 o8 T9 ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 J! O+ A$ g3 y0 ?]$ A; L, m' D2 F& D  j% k- K) n! p
]
, V9 m) W) w  |let j 0
/ p' h( J& y1 F" [" \" Clet note 07 e1 Y( h4 ~2 j* F# I; J) f
while[ j < people]
& U/ R& {1 b" v- L9 V, o2 w) H[
# h4 w% S. q1 c) E3 I6 S4 w5 vif( length (item i
# |+ H, m/ ]2 m6 h/ g' P4 B' x! X[trade-record-all] of customer) > 3 )

* t2 Y2 v. K4 T0 e* _[
8 S6 y9 b$ U5 ?ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ w0 u6 }  @* _$ B[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ }  K) z6 U) s6 A2 m! H) i) S
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 Q6 G' H6 \0 |; x# ^0 o( w
]
0 v: R/ D+ ^& e- \/ I! @# w]$ m4 |0 n. w( l+ ]
set global-proportion note  v8 w8 ~! d4 X2 \( H: m# ]
]- B0 \5 S+ j, y1 Z3 I( @* [
end
% n( A$ \$ d. C0 c6 A* q6 N/ [* \+ s+ H6 N6 c0 l- N
to do-trade
6 D# ^9 J1 z0 S& W1 U8 B6 e  g3 Q;;
这个过程实际上是给双方作出评价的过程: i0 C# k' F9 }3 n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. ~$ Y; }* ^/ h+ U- S; z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, z+ P4 {/ m  w0 G
set trade-record-current lput(timer) trade-record-current% {$ [. {: I. Q( h
;;
评价时间4 V& F: ~9 t# ^- g! c; X0 u! G% K- d
ask myself [# Y- q3 V3 A6 A
update-local-reputation; I2 Q$ ~8 ]* T  ~
set trade-record-current lput([local-reputation] of myself) trade-record-current$ c2 G. [3 A4 u1 B. z
]1 z/ z) Z/ b/ p* @5 r
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# |! I) [# L& I3 q0 n4 I
;;
将此次交易的记录加入到trade-record-one7 X2 [3 ?3 a3 H) A
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 n: h- E  U& o) \* nlet note (item 2 trade-record-current )/ Q& F4 z1 u( [- K2 H
set trade-record-current
8 @6 _+ {/ n( c2 k% Q% O(replace-item 2 trade-record-current (item 3 trade-record-current))

+ Y+ U& x) u! A3 Oset trade-record-current  e" K! ~. \% n, `8 ~5 C1 L
(replace-item 3 trade-record-current note)
" J3 p* g+ x; g
" f2 M3 C9 p4 T/ i4 {4 o: g

  k7 s* D4 c2 `5 R) xask customer [
8 a  i; p) h& a9 V6 Q- p& Bupdate-local-reputation
. D5 [/ a" x& [2 v! r" lset trade-record-current  n2 A) _' X4 Z/ m
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ k" S: `7 N/ {4 t: Q# n* {2 |]
- z: n  t$ i8 Y8 r$ {% }3 @$ `( ~  r5 k, U/ T2 c, Y

( H+ ]+ v3 u/ T$ E( \( C; }3 Gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( x0 Q; a9 T1 r4 Z6 `- o

8 R! K9 S5 B$ b" y7 v4 t) W9 v) pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' d$ I7 e  I" f( |0 V8 ]% i) J6 ?;;
将此次交易的记录加入到customertrade-record-all/ a6 l2 x( P( T1 [, S
end" z; Y4 A5 z0 Q6 h/ G- W) O/ ?" r
% e+ j& `; K5 K+ U: o
to update-local-reputation1 J4 J" b1 M; b) X, ?* Z
set [trade-record-one-len] of myself length [trade-record-one] of myself
5 c! y& [9 O% z  Q
  m" N. X+ |) @' Y8 _1 V8 N. V
;;if [trade-record-one-len] of myself > 3

, L. M( }) P9 [! Fupdate-neighbor-total% E6 F  P: b2 a8 l$ B$ ^. `
;;
更新邻居节点的数目,在此进行6 R" m2 ^, q: e/ z3 i
let i 36 K  v2 U/ q: V$ L. y) P& [
let sum-time 0; b$ c1 K5 B! e7 l  v
while[i < [trade-record-one-len] of myself]
; V4 m) _% _% T: V[
% r' C' R9 E3 ^3 p% Qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) ]6 ~( N% P/ V5 H3 a
set i1 S' v9 l/ z5 I4 C6 }
( i + 1)

* T: o9 e7 p3 V% B/ A  {]( Y4 b& q0 R) ]& S- Y6 |$ [+ M
let j 3
* m% x; l& C2 d  X/ L/ N# S6 ulet sum-money 0
  s& o; M" g- h7 h) [! U2 i! Lwhile[j < [trade-record-one-len] of myself]
9 Y! f: w+ J3 _  Y* [, f& O[5 I, V+ r# S  _- x0 Q; T, ]3 j
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)
; Y! q) ^; e9 R. ]set j4 Y1 O# ?% ^5 b' S3 H9 ?8 j1 [3 V4 O
( j + 1)

9 `; x, k' i# G5 \' Z& P]4 I5 y9 k* w( X8 n! Z3 f
let k 3
  g: [1 T% _# nlet power 0! }; P3 M- D8 O7 A- W: F% D2 ^
let local 0
0 _) ^5 z% f! ?7 }while [k <[trade-record-one-len] of myself]
6 D$ T3 T4 L6 v! u[- u! u1 }0 j" {4 X$ D9 B
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)
' Z+ s6 i8 z) y+ H5 iset k (k + 1)8 u7 g0 |" D1 k, P
]
% }. }; ]# |% B7 p+ p0 L4 @  ]set [local-reputation] of myself (local)% t) O1 i' q: a& `! j% ~
end* F1 l* {6 l1 Z1 d& V
+ F# I: X1 {7 c$ t+ ^* h/ C
to update-neighbor-total
' D# j' L' `: L  Z( [) v' q% r; T3 a+ S5 q* c6 C/ G; ?; |
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 Z5 |' h0 ?0 m, _9 B  D7 p$ Q. H
0 G% e, g- {* K
$ z0 E5 i5 I1 C6 _% P- j
end# _  K$ i2 U5 K+ q$ R5 K

+ D( l4 w' i# x) Yto update-credibility-ijl / i) g  m+ s7 o$ H2 F5 i! [
' J- u( D. x4 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。
/ U- W3 i0 w. I& o* |$ d+ r6 S" c( G4 Llet l 0
: R0 g3 g  B# O1 P! \while[ l < people ]. x! l7 j4 l% @- o
;;
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  G1 u! D8 m, _2 ]: J
[
' ?: @; }8 S* v8 h# Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% q! S$ X' N8 J6 ^if (trade-record-one-j-l-len > 3)
/ {9 l6 O* u: b[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
# Z/ e  t8 }5 h9 mlet i 3
. X/ B' \6 B, R, Z/ N4 glet sum-time 02 I: v$ Q. I7 _7 X4 }
while[i < trade-record-one-len]
7 ~8 w0 N8 Q* j) O; J9 a[
% [3 \: g4 u+ h, |+ p% Vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" q6 h. h2 R( k8 B2 y
set i& J, Z" i* K/ J! ]$ R
( i + 1)
# M, ?) u; u: Y
]" t* ^, c: U' K1 P; J" W
let credibility-i-j-l 0
7 o8 Q/ e  p' @3 I6 W% x: F/ y- j;;i
评价(jjl的评价)4 l( d8 @' S3 c) b6 v0 `
let j 3
- z! D3 w- n* ~  tlet k 4
) h0 M1 |; h( T! L+ I- kwhile[j < trade-record-one-len]
- X3 t7 d$ C  O8 ]3 e7 y! X[
! A: [# `; t, ?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
$ c! \! \9 R) I1 D: D* vset 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 u& Q: J- h/ W6 r
set j" {% F+ U/ X9 W: Q3 J: _
( j + 1)
% L1 t# {. G+ w1 ^
]
; `8 b  U0 ?  F/ sset [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 ))* A9 m( s: I. s! v+ v
2 c5 {2 \6 y. e! q! i( c# x& [! E
5 `5 P" I2 Y* \  b0 j
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
" C; T  u# N" p3 d6 P! x;;
及时更新il的评价质量的评价
- j! L8 l* x! Dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 ?/ I9 f) |% i# q% aset l (l + 1)
# o! f8 ]5 x- Y3 B; _]0 F% u" L; S8 T5 x# x! ]
end
4 A; R+ W3 e* \; f8 D& O, b9 C- b7 h8 ]/ {' S+ u# P' Q! j
to update-credibility-list
, h+ i% Z! G  s9 f/ Plet i 0
. Z) n- Y7 a% Twhile[i < people]
3 a1 `' T3 p/ Y1 C" A* h/ F& b5 U[
2 g4 h: q" x8 }( i/ \8 u6 l" `* mlet j 0' z' z- n2 S9 l5 g; _) |1 i5 W
let note 09 W. v3 {6 q7 e+ M. F
let k 0
: p# o# Y& ^% Y% ?& {( E;;
计作出过评价的邻居节点的数目
+ a( [% i% Y9 G7 pwhile[j < people]
8 M- S- O7 J! `[
  q9 @" q* v: ?5 l4 J' {2 Fif (item j( [credibility] of turtle (i + 1)) != -1): H$ P. p) s- G8 S( a
;;
判断是否给本turtle的评价质量做出过评价的节点
: ?5 P- V  [9 G# [3 i. Y6 J  \0 ][set note (note + item j ([credibility]of turtle (i + 1)))
# P- @; G0 ?# q* E! {; j& I;;*(exp (-(people - 2)))/(people - 2))]
/ ?9 k1 E# X/ V5 A! `6 G& j9 r
set k (k + 1)4 w( C) [. O! r3 d6 B
]5 q, e7 g4 B  R2 }& i
set j (j + 1)  v! {* w- z4 {3 e
]
6 w; \# f; a; jset note (note *(exp (- (1 / k)))/ k)+ X! F% u3 @$ F$ P/ r8 N* q' w
set credibility-list (replace-item i credibility-list note)% z* m; T! W- H
set i (i + 1)
: s0 u) J3 h4 j6 t: {' S0 G]
5 K9 O/ _( w6 ]! W1 R# ~4 t! M0 `6 iend+ l/ _- g7 f4 ~- F
, t2 T& y* R& I  D) P9 H) H- n) \& g
to update-global-reputation-list7 _% _# G$ R9 x: ?$ _6 X
let j 0* y* M0 |( T# Y# C
while[j < people]
' c) k8 g' E+ p5 n9 F[, H  w$ _' W8 x/ `' [' L) f
let new 0
0 q5 F4 C% f; ]- q0 R;;
暂存新的一个全局声誉5 w0 I% P9 a, i! o, j) I
let i 07 o* l3 J4 B/ }% x3 u8 D+ M
let sum-money 0
6 P! s1 Q* j5 [! `% y( clet credibility-money 03 n, B$ I- v2 S8 n4 V- J
while [i < people]
7 d2 G0 d! G0 P) Y, }[
! P+ c5 n# ]4 L% rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" A( [" F+ N/ y% o
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 Z5 Q; ~. ]2 Z( m! ^set i (i + 1)
& v+ N0 e, M) L; c5 o. O]
" \" B) ~( T% vlet k 0
3 f7 q3 d( P$ F  R9 R9 x: w+ @  Alet new1 00 V5 @/ k# Z% C& S3 t' i
while [k < people]
/ i& n) M8 u% H# n% G[) u. `0 E9 n& l) m$ i6 L& n* ^
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)
/ _% @) K7 C3 M5 Wset k (k + 1)
' W( s; o5 g* u2 J; P1 _* L6 j]7 Q/ e4 z, a2 ?4 {* B4 w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & y* s: V/ b) U7 r+ i# B/ k
set global-reputation-list (replace-item j global-reputation-list new)
7 `5 ]9 U, {) |; c2 R# Y4 t/ G  ]set j (j + 1)
/ w* C9 h: t4 |' r) G$ m2 ?]4 ^" F- R; O" o3 [5 m
end- Z2 ^2 t1 u! i

' i$ R# E: X5 Y$ B) _
: m# c- Y  d3 Q
& R' y. q7 Q8 F' Q& Z8 b' v7 q1 Cto get-color8 L2 _& ?" N6 t5 o0 |
, V1 m1 Y% b) z; V4 [
set color blue
4 E) G3 M( G9 N! @: m7 W
end: A  \8 F% g9 `% W

! ~: K$ V3 z, ?to poll-class
! ~) {+ ~+ M" c: P) O2 U! Q: Eend' X# i. ?7 C, G4 g0 `2 U+ a: w6 e
0 U3 r0 y& O* u! p" Z5 |$ q; F
to setup-plot1
3 _1 ?, F/ l% r! F  v8 W
& a+ I+ l2 W/ @5 g8 U+ Fset-current-plot "Trends-of-Local-reputation"

4 C/ M& F$ Q" c, V$ f; w( R0 |2 H. {/ h5 Y( c
set-plot-x-range 0 xmax
* ~* ^* b& J$ c
/ n3 e  X$ z/ ]; V$ @! @* M, Y
set-plot-y-range 0.0 ymax

0 V) h  `! o, \: i! A0 e) S% Dend
) c! O# |* s( Q2 i  n
4 A/ Y: ^" I* g; zto setup-plot2
- V. F, V' y0 z% q( o. c6 q( Q* J' E! O. t! b
set-current-plot "Trends-of-global-reputation"

# p6 r$ j% w6 F& s( r7 T2 @
2 p1 m4 e& S: g& D% Aset-plot-x-range 0 xmax
- W; a: N' L$ P6 i: z

6 `4 K0 u5 E* @; kset-plot-y-range 0.0 ymax

& w2 w; B$ \8 l6 d( C$ a' jend1 q4 i  `  r: i

7 i4 i7 {. z+ K* l( ]  [to setup-plot3
* o( X; u$ ^6 m7 w4 d/ f7 O' z! x' {0 K# t
set-current-plot "Trends-of-credibility"
! J4 C' A& v" k! Z+ y! g
2 q& Q2 @3 k; }$ U) F+ A
set-plot-x-range 0 xmax

8 a5 z7 H( A. s0 P+ K0 f7 A5 f; R6 G2 ?8 ]7 {2 b* e
set-plot-y-range 0.0 ymax
, Y6 H0 l& _2 X& q
end
' f) d( A7 M$ u6 T9 W9 e
+ x# |$ {% P- @to do-plots4 ^: m  g$ G0 b) N' I
set-current-plot "Trends-of-Local-reputation"
& C3 ~$ E7 j  y2 hset-current-plot-pen "Honest service"; c3 g% l: p; \# h0 S5 N
end
2 |6 I# }& ^- L* V
: J9 @5 W' r2 ]# U$ r[ 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.
" Z& P. {# j6 S  K$ c7 U, Y& R3 s% U+ e3 F  w+ X
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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