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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:
( W! |! ~! a+ H- Ito do-business
; W8 s6 X7 I- Z  @. U5 p/ B rt random 360" T; X. ~5 U( @$ Z
fd 1: l5 u8 ?  j. m7 v  |0 e, L- C' ?" v
ifelse(other turtles-here != nobody)[
) G" r9 S2 G0 o2 |" j" _0 l   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.
- z" l3 {' Q/ p+ ]- P4 I( N/ B+ _& {   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) W( r. n" I, Y% q" I
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 X3 m6 [2 S4 N1 p+ y+ m
   set [trade-record-one-len] of self length [trade-record-one] of self
8 S; g1 N+ I  t/ r7 c   set trade-record-current( list (timer) (random money-upper-limit))& l7 i) y* S4 c
% m# ]" T4 |# e- J4 S; {+ L
问题的提示如下:
1 F* n$ t) t6 D* z; a0 C# k/ N- a: _7 Q
error while turtle 50 running OF in procedure DO-BUSINESS
9 ]8 c/ ]. T6 W  called by procedure GO! [" G4 F$ L8 _( o2 Q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.; Y+ V# F, {/ s9 ]5 K
(halted running of go)0 ^* e. h: V+ g% h; u/ ^1 l7 L

% i& O1 ~. S# W/ I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~~
" h- B( X; V& s6 E& b% L: q% X+ `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
: ?- k" E* A  s, a( Rglobals[
' e" ], R, Y- hxmax& O/ E7 G; a' D) o
ymax
4 r/ ^" `# b; jglobal-reputation-list
# C( U, J7 }9 Z$ l( j- m
0 g) q: R' B- g/ t- ?;;
每一个turtle的全局声誉都存在此LIST1 N- O' A! D/ W, w2 Y
credibility-list
* _. Y' L+ Z2 U: u% A;;
每一个turtle的评价可信度
# T& P3 S; v7 |+ G+ hhonest-service
. G6 d# U. x) w1 c  Hunhonest-service( ?* p' H- K8 E9 C1 w& E
oscillation
8 T7 l7 E+ _9 Arand-dynamic. l7 {% p# ~+ B. f5 G$ A: S# ~
]
& I! _% m0 f7 [& L0 E4 `8 g" B; Q7 X5 @
turtles-own[
8 X) W( K# K' z+ dtrade-record-all
+ t( o8 u0 r+ ];;a list of lists,
trade-record-one组成0 W4 I: H2 |% H' p
trade-record-one
1 D' U* p4 w# U; }' I& y; j: ^* V;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
% p$ @* n  g" B6 [4 ?; E7 C0 e3 F
;;[
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]]: d8 z& _" B7 L6 z# ?' y+ ^$ B
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]0 |) L- T  B2 T: w+ }- x4 v" v
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list3 A; i$ s+ d* p% b; l
neighbor-total6 e# t5 D) e' O4 s- I  D0 {6 r
;;
记录该turtle的邻居节点的数目
, W2 Z/ o" }" q9 Otrade-time" T- k! Z( T' E& j2 C) [
;;
当前发生交易的turtle的交易时间' B5 r9 V$ n) j
appraise-give
  t9 p4 M- p5 w9 a6 {;;
当前发生交易时给出的评价
' w4 k" l. T% Q4 O1 G" j/ Qappraise-receive
& ~: e  ?" {6 `& p; ?" z+ f! Z;;
当前发生交易时收到的评价* C. D7 u* r% j& z5 i- x
appraise-time1 b4 U/ n" ?2 z5 T7 q5 a& q
;;
当前发生交易时的评价时间
- q/ I9 J. n) vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉( o7 F. H2 s: X
trade-times-total7 A$ q* ~5 Y9 z7 c4 [" v! P5 j% O+ N3 Q
;;
与当前turtle的交易总次数% m3 N  S6 r- j+ K6 N$ B1 C
trade-money-total+ Z- c) R) _2 g% M. Y7 G
;;
与当前turtle的交易总金额: L" K2 b4 m' I! }9 G
local-reputation
  _; D, H6 [$ Nglobal-reputation( l  p$ L( S7 ~0 v2 O. t
credibility7 f# y2 i. u0 \7 m  C9 T
;;
评价可信度,每次交易后都需要更新$ C( b# `4 U0 t5 D
credibility-all8 `: f5 S4 F# f
;;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, j5 a1 `. [3 q! ?7 H$ F

8 |9 C  G. ^3 F8 s;;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
' `$ H+ Q6 n' H" c! K" s! lcredibility-one" v. E8 n& K; p- {
;;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
" {! V6 u0 V; t% Cglobal-proportion) T9 N$ ?& p5 G( f& A" Z
customer  y7 I3 e, D) b9 D) ~; K9 f' R
customer-no
- V) Q, P% R5 Y# a- e  E4 X9 Ftrust-ok
- ]. J  X( p# h1 B' g. btrade-record-one-len;;trade-record-one的长度
) q/ ]9 K5 l; }9 [% T5 u/ ?* _]3 S$ M" ~# K" U  F* G5 W

0 r+ F. x: @8 T, i0 t: O, u" x; Y% \- \;;setup procedure
( U8 \) V2 S$ Q7 c6 K$ f& |/ O* ?: r; z& a! v
to setup
2 c1 U. p( S  u
' q7 A# S; r9 ?ca

; U! e- n$ x& d: o( Z
6 g% ?0 C5 @( D8 Iinitialize-settings

- Y; @4 _5 D+ ~/ y0 |7 N0 ?* o! L& |: X6 d
crt people [setup-turtles]

; R1 B$ k# ?2 F- L5 E
% S" U0 [! v; greset-timer

. I5 V5 p$ Z) `+ K2 I; n! G
# a1 p" y6 L3 v  _% Rpoll-class

. B# c+ V3 m/ i% P1 z+ ~# n
4 u  e1 y  Y  ?! j3 Csetup-plots
: E1 W* K5 |3 X, i# W! r
& L0 [' \1 M; Q
do-plots
& J, l. Q6 r) g
end2 q: t1 q+ R0 j  ?
2 ?* \' @: M) T) F: n
to initialize-settings
" e$ w2 d/ B! u& ^* U5 g( U! c5 `; e9 u: u  c! z! }
set global-reputation-list []

: {: N0 D7 J7 X8 c% E" K9 ^9 x+ Z3 x5 o9 `. ~7 D
set credibility-list n-values people [0.5]

% U# N) U/ D; W! X0 ~- l+ i6 |; d) n7 l
set honest-service 0

) I3 m  F! s8 X* u: f1 v- v6 `
: [9 l) }0 T/ Mset unhonest-service 0
& I" f) R0 w# @: z' G

; n5 _: H2 F# {* Jset oscillation 0
+ H# ?' M5 }/ Z6 C' ~1 O
, u  F4 g: u2 _% G
set rand-dynamic 0

, U- Q: _8 s3 g  Hend) x9 B; Q3 z/ c5 r) x7 C/ M
1 R1 b4 V# w, z" P) }4 H6 L! G
to setup-turtles
, \) w" O! Y, tset shape "person"0 |( b# c* q3 q% R  r
setxy random-xcor random-ycor
0 q& i& Y2 q& s. U& Fset trade-record-one []
0 Q1 L+ q5 J+ g# a7 [* y. [/ |
" k) l, E5 S3 d0 S, l. W6 _
set trade-record-all n-values people [(list (? + 1) 0 0)]
+ @! q2 u- M3 h7 P8 V
0 j* l" N, j# B, @/ N( R* {
set trade-record-current []
6 D) h  U" |5 l0 Bset credibility-receive []
' y2 a2 `" Y' v" q& |4 N) B/ h- bset local-reputation 0.5
, F  ~9 x& U* A  Jset neighbor-total 0/ l6 X5 H. Q" \% ^; m# N+ ~8 o
set trade-times-total 0
* o8 |2 `2 c; @  o8 R6 Y8 L( tset trade-money-total 0
5 o2 I9 }' l4 p$ E8 @, V! e& cset customer nobody) f4 X+ h6 A. P  T$ {
set credibility-all n-values people [creat-credibility]7 t% J* J# z+ @$ R  B" s
set credibility n-values people [-1]2 B+ N2 U. _+ x3 `
get-color
7 \1 k. i6 n$ j" L$ T' R+ x

2 w# Q7 v( a2 d9 D6 l$ S; t. Gend$ D( V, @5 k" x: ~# m* d3 ~. x6 a
9 o, P9 R1 u& p, [
to-report creat-credibility/ c1 |0 D0 b( Z- o6 w
report n-values people [0.5]
( L) r2 ?1 p$ J) I9 X# W! Wend  d4 ?; x8 p5 ^5 z3 A. b
8 T* X8 o- ?, @+ K5 r4 b6 c* e1 {
to setup-plots* ^' Y& b) E. `2 D; M
6 k' w4 g) G2 e7 R% R# k
set xmax 30
1 l0 H% G) T! p7 C4 ?+ f+ x
* u5 F; Z3 @1 Y' x& }. x
set ymax 1.0

$ a  N' e" f$ k" F, v1 L. h2 B5 v% M1 O$ Y
clear-all-plots

" R" V0 Q: R, M0 e0 D' ?
  ]0 `9 k4 s; t2 T) H# i' H- Csetup-plot1
: J4 u* {) B4 y, Z% p2 J

6 }& Z8 e+ Z" p+ Isetup-plot2
: j! Z) S7 Q" X9 b
6 d& h& |* J* ]
setup-plot3
1 c8 j) `+ Q/ l# n* F) G
end/ b, h! f( ?) u' g
, v4 H3 W% A9 E2 r+ s; p
;;run time procedures0 f0 Q# u8 ?* c) V5 K9 ?

8 ?* r6 R1 ~' [to go
& N! V5 H3 p$ n. i) U' O3 R$ ~, p
. `- {% H  b% k& q/ U8 n* I1 o# Uask turtles [do-business]
0 M7 ~" ^: H6 R+ q- P' S, v# ]
end
6 i7 w1 O& n* h+ V) e
. a& `. z' ?) U" N2 o  M7 b0 Hto do-business
* G# ]. m( L, H' X

5 }+ P1 P0 {# ^/ a
3 i+ I$ G2 x+ B' e' X  i& }& ort random 360
4 M3 Y& q  G( `  |; h

* r$ a/ a# L' T/ Z" L# A7 ?  K' Ifd 1

$ q4 }, O( j, c' s2 l- u, w8 V
9 ^+ Z0 v4 ?. mifelse(other turtles-here != nobody)[

4 `0 a0 W6 _# `- \
3 z5 g+ ]# p# N  Iset customer one-of other turtles-here
$ d7 j/ ~2 {7 r1 s8 [
+ x- o0 P8 Y, ~, y3 h, J
;; set [customer] of customer myself

, c& k6 K0 t! ?4 l# D' c( D- L6 _) c3 h8 Y8 N+ c- _7 z. h7 `
set [trade-record-one] of self item (([who] of customer) - 1)3 N5 {& r/ w: \, F. H
[trade-record-all]of self
- J8 M* U& r" O$ H2 ]9 @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 A" j5 ], n) B& t; @# q6 }& M/ {, h( N
set [trade-record-one] of customer item (([who] of self) - 1)# ]3 _0 M+ x5 C1 V
[trade-record-all]of customer

! |+ j( {% d; b5 K# V
8 V2 i1 b+ W( b% }$ L' o( b# `set [trade-record-one-len] of self length [trade-record-one] of self
3 R' {: y( x0 j' P2 X/ d3 i: J, |2 g

: L8 J& Y# j/ Q: H# H2 ~set trade-record-current( list (timer) (random money-upper-limit))
  ]) q# |+ k2 [

: ]$ |& q0 A/ u5 V5 jask self [do-trust]* m8 I, u  K0 _5 c2 T- Y
;;
先求ij的信任度
$ X1 F. Z  q& X& n& y3 c/ G2 y
$ i% _! u- r- B: I$ X$ Dif ([trust-ok] of self)* T# h% i" |$ W' ~* K6 Z$ V
;;
根据ij的信任度来决定是否与j进行交易[
- }' J) F3 d$ E2 D& H  Y( Mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; u) i6 B% {. w* I
0 J7 ~" a4 `7 p( P[

+ q; g; o7 u! |1 ]4 y! p4 b; e0 X; J
do-trade

8 |& v0 Z8 z/ Y% @, [: R+ q  ?" g1 D2 C5 ~! c' p9 p
update-credibility-ijl

2 X) I" l  H  S/ X  `+ W" t/ l/ Q; r9 t
update-credibility-list
' f) C& |9 B. s6 M' D- K
; }  H8 ^0 ]  P4 Q+ y1 q/ M

% X  s/ j- ^  q( ~6 zupdate-global-reputation-list
9 d: C( W% u* H* J! ?
' n* `7 H4 B8 b
poll-class
: n2 k0 w* I$ N. Z) u8 N

0 R3 P/ ~' {, M% bget-color
/ P% J! ^% @/ e) k% ^, `# b8 w
4 i' }% p' V6 V% I  Z
]]
' Y+ {( z2 e: Y" Q: o9 F% Z
# b! d% q# |5 b6 j;;
如果所得的信任度满足条件,则进行交易! Z/ G! g, ?5 q% i4 K: a5 R8 f
) S# `5 ?/ [% Y- l7 Y  a
[
3 l: z  H8 \8 H$ Z& e" I. a

) Z) Y$ s- ]2 g, Q8 _0 irt random 360
8 W8 J' C* ]1 B% E

, p  z9 `, h6 o: i, M% Zfd 1
. K' c3 `+ w' _% k: Y' E
6 ]3 Q& M7 x* a7 t
]
- U2 W+ G! F( ?' o( n1 i2 H
" L& b! q9 x& Q! C7 q2 z
end

: j* ~( c8 Z# z1 }) ?& e
' [$ ?, Y6 l7 F2 h! ~% ^0 D! \to do-trust / a2 c+ r5 y' }' f9 `8 A% J1 c
set trust-ok False+ X, |, t" {  V9 ]* ]6 D& o

1 p6 w1 _0 X. ^% h: b, z$ l

9 Y( u( x- n" T9 r. N4 r4 Tlet max-trade-times 0
5 }# @$ F) v& E) v! g# |foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 C+ l# j+ U. B4 G' }
let max-trade-money 0* N+ X! B6 g1 D0 \0 R( B1 `
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 M& d' p$ o7 v9 E/ klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. ^' n7 e( K6 I7 ~5 ~! q% A. u) Z9 E# }2 b1 @) F
# M! d" I' X% y3 n- q1 s( x
get-global-proportion- f* Z0 c- D. g' y9 y- Z5 J( O7 l
let trust-value; Z! n+ B0 O! g% f
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)
9 Y- X$ @  F: q- b
if(trust-value > trade-trust-value)
* x. N0 [- K6 E$ a[set trust-ok true]( T* r" l- i- a) S9 V
end/ T; N( P! |% }# F! ^  C
* I5 r& E, d; v" j/ e9 W# @
to get-global-proportion( T* g" m. B1 }4 R
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( i. k) W( f  Z* X[set global-proportion 0]
& V$ x3 e- R8 v! ~[let i 0
: N8 x; m; @. E$ i0 Z* W) qlet sum-money 0
4 r" f8 o! v, I5 K: O. u( f" ywhile[ i < people]
# S( G* e$ r9 B5 L" ^) Z" [8 R[, }+ _) Y* C9 {+ T6 h4 c% h: Y
if( length (item i1 H. x; Y& h: L+ e' @
[trade-record-all] of customer) > 3 )

# z' P9 X: f( h7 g* N[
# o+ K$ I, }6 |! d: ^0 mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 g0 b: o0 \6 ^% @
]* W6 h8 }$ i, ]; M* G3 c# h9 K
]7 f; Y9 q4 j9 p) R3 p- `
let j 09 \8 x7 p2 L% x- N6 p5 Z
let note 0' r! I4 }) s$ a1 F8 e3 x
while[ j < people]
* J8 |. o6 }; \' z2 X; j- o; z[% U8 n3 U0 T' k; y' M
if( length (item i8 V0 O9 M7 ]% d- f. x
[trade-record-all] of customer) > 3 )
) f6 Z& ]. A0 X0 {2 w; _3 {+ r
[9 \# A6 B3 d+ L% e+ i: m' k$ n
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 Z: x# b# X' T# M: ?
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 B! n' T( T4 e# @8 W
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 v% N, I) Z1 e; v) t
]
0 p# V, [4 `* B( h/ X]( Y& G: x0 |& e; m4 s
set global-proportion note
9 }1 u6 a0 A. J, N]
2 A- z# h; e' Fend
2 }8 R9 s& O0 n7 D
* i6 f# T* M0 {: f' g9 y' Jto do-trade
3 C9 q/ y7 g  Q: x" x8 r;;
这个过程实际上是给双方作出评价的过程
* a# A- }+ ~: n/ Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* e) V/ d$ w1 {" \( O" J2 mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, x0 `' U) u0 ^set trade-record-current lput(timer) trade-record-current& C4 W4 X: W  p
;;
评价时间; _1 o$ e' {& f5 m
ask myself [
% G& P4 Q  g0 @) rupdate-local-reputation( G, d( V5 j5 E1 F" b4 g% J2 P
set trade-record-current lput([local-reputation] of myself) trade-record-current
& x' X! c3 N. c  \/ m& t9 D]6 |9 c! s: U0 T3 P3 F9 j! |% M# Z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 E* [* a$ x, ^7 {5 e, N. C;;
将此次交易的记录加入到trade-record-one
9 ]" d. ~/ _& B0 ~2 Hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  d% b6 E! C3 \( ^2 e- K7 _  g  W  E
let note (item 2 trade-record-current )
, J0 C% N: k1 M; tset trade-record-current
! |2 ?7 X" H6 g(replace-item 2 trade-record-current (item 3 trade-record-current))

; h' F' O: p% Lset trade-record-current8 l6 u; e* i5 S
(replace-item 3 trade-record-current note)
7 E0 e/ o4 _2 Q8 _! ~
# n5 b2 F7 a& g) V: p* B& j
) d/ a1 x7 R2 c( z
ask customer [
" [3 L' Z0 j" ]* x0 }( T" q0 Zupdate-local-reputation" b& G- ~: I  c$ {
set trade-record-current1 e* o3 k- M" c- B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 I6 Z- A0 o4 C) |- P1 g& m
]& f- s$ k4 y0 n1 v8 v, C
. S- }+ w8 E; G& p- f# j' k

. Q8 u. G1 m* \set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ Y6 T- L% x; V

; k& r/ D" C0 w* A) I: jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 r2 _+ `9 v6 A/ {+ m$ ?
;;
将此次交易的记录加入到customertrade-record-all+ S- V  ~/ d$ l; B9 q9 J& I
end& q* j9 \, {# _; P( }

1 o. X7 c" K7 [9 A; P$ z7 gto update-local-reputation
3 E, T: B, i8 O3 A$ j% ^set [trade-record-one-len] of myself length [trade-record-one] of myself' D" I: l* q) Q" Q7 J1 r

1 W! |3 q: g# Y/ o' K# g2 [3 g. d3 |# {3 I- `
;;if [trade-record-one-len] of myself > 3

/ n. v$ d+ n1 V; D/ p5 bupdate-neighbor-total' j% T3 H+ K; b6 N7 c
;;
更新邻居节点的数目,在此进行
- T) Y3 L5 x+ U: j9 B: f3 @let i 3  x# B/ X- k8 Z. K* I
let sum-time 0
: E- j4 [8 e& U9 m( bwhile[i < [trade-record-one-len] of myself]) Y8 S* n: P+ x# p) q3 ?
[: z! ?0 \; w) G( h/ r
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 |, H6 ?% I: t0 F0 I& `
set i
; d8 |) s7 E3 P- N( i + 1)
' `% h; `+ |( v* s
]
* ^" r2 T& F$ Z1 ~0 K( W; A+ P0 Nlet j 3! v! c& F/ `3 o
let sum-money 0& V  G$ u6 H, f" u1 Z
while[j < [trade-record-one-len] of myself]
# L3 o0 N5 U+ D[6 Y/ D8 @3 `% ?) X3 y9 F
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)4 j- p3 T* ]9 Q8 r4 _( C
set j; G, |/ N2 o3 D) S2 @- F3 h; v2 h
( j + 1)
; e; c7 D/ t' f" N& w9 T$ C7 m/ c
]
/ G7 G% i( k- A* Z2 }! c. |3 dlet k 3
# ]" L  q! o. \) O; g7 llet power 0" G( I" v; j! V; F: g( ~" v
let local 0
5 h$ e! f2 U+ |- u. rwhile [k <[trade-record-one-len] of myself]# Q! l! [' I- i; q! I9 o
[
) O  [7 J7 r2 ]; B) ^+ A) {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) / j, |3 s4 c: B7 p8 B, j
set k (k + 1)
% O/ ^9 w' m8 p1 ]: p]. R8 x# N9 Y. S
set [local-reputation] of myself (local)
' Y4 w8 X6 ^) Z) }end
7 e; s4 X# R( S& h2 Q4 |, u; z1 S/ @3 J8 p
to update-neighbor-total
% G5 O& g* V% U& J. }& T6 r6 c9 B& U; ?4 Z7 V
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 |3 v) I5 S2 n" y2 U8 p, {
- m  r$ U6 Q; l- e

$ @0 d$ V/ W( l( o1 x7 vend7 I8 e1 E6 i8 w8 h  I
9 b) P5 x# Z8 f& v2 Y4 S
to update-credibility-ijl + x+ i3 u9 G. P: {

+ F# ]) u6 N/ v;;
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。
' M6 ?2 U' N8 olet l 07 L& E8 p5 y# d) S0 y
while[ l < people ]
7 K1 B9 T3 H9 a1 r# y4 s;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价; e, d& o0 G) Z* J$ U8 P
[9 F% Z2 D9 s) J8 _' L, S0 C
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" ^" ]; z( s5 k! r7 b8 m8 E
if (trade-record-one-j-l-len > 3), I8 F$ v* I1 _
[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, o" S5 L2 }- o9 s/ i( W3 v2 ]
let i 3; w- ^6 d- H, C& r
let sum-time 0. O1 d; J/ E  ?" Q$ z* R
while[i < trade-record-one-len]
* x+ M) d, x" ]/ X, O[/ ^" y* z0 _! p5 R7 z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ L' I5 U' l* m3 M6 P
set i9 }5 C1 @" ~- y, ?& n
( i + 1)

1 }& \  d& a. N- @# k]
1 w! w- K. e4 L4 h! o0 Flet credibility-i-j-l 0
0 f. [# R* Y1 z4 c;;i
评价(jjl的评价)
9 N1 P$ n- Y: M# d% a. O/ I" D* Xlet j 3; `$ @# O3 [( E- J
let k 41 y: w) h, m. q1 ^+ T
while[j < trade-record-one-len]# `- X! S3 I& G5 w' e
[, o. Y  b$ j# I& N: g
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7 \$ {: g" G3 [' L
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)9 l0 A! o4 h  d% M5 z
set j
  T- R% O  S; |* L9 R( j + 1)

, X1 o0 s+ F% M* _% K# o& K' C) O  []
/ d2 x/ x* y& P0 e) e0 v8 W( W2 bset [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 ))3 o; |" o$ }# K& R/ {( F1 \: J

7 M% i! Z: P% v* G

+ J' a( y. u* K& x. ~: alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 B0 {- Z0 L5 n/ c9 F. C/ K
;;
及时更新il的评价质量的评价/ c6 t5 P$ D4 ~1 N5 S* w
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" ?+ p$ h6 @( q1 p7 w0 aset l (l + 1)
; v. u4 L7 o, S& q* b# j]% n% m3 `% m! m5 E% t" }# c3 D0 E" g. B
end
. k7 `% V# @& _- D+ g
1 o$ X2 I( i$ o6 Y; b* p9 E! {to update-credibility-list- i. P8 F0 K9 N$ ?  N7 I8 X9 a- E! x3 M
let i 0
+ }% J5 F1 A* Q' \: Q2 Q6 K  ~while[i < people]
, D5 O+ F+ u9 t7 D6 R[
3 M0 E& v, |, ^, y1 C* xlet j 0
# P' |0 B  e* K! K  ~2 slet note 08 O8 h1 X4 O  B2 K) m
let k 0
8 f7 n, P( B% z;;
计作出过评价的邻居节点的数目
  g# A% w  \& O( Owhile[j < people]) ~& S, \8 k7 Z7 o7 k
[
; B, e6 N( q# w6 d8 Hif (item j( [credibility] of turtle (i + 1)) != -1)1 `' c- j+ B% J, Y
;;
判断是否给本turtle的评价质量做出过评价的节点
, _5 B, y" I2 x" R0 b[set note (note + item j ([credibility]of turtle (i + 1)))
9 e! \5 g& d; n/ J% P$ {# s1 S* W5 w;;*(exp (-(people - 2)))/(people - 2))]
4 |9 c% z; p" L
set k (k + 1)4 f) G1 i7 ^% S+ R0 N4 `0 [! p# {
]) d0 f- v! Q6 Y; B9 ^  c, h
set j (j + 1)
5 Q9 x/ p: V" h+ u; c. ^]8 l! @  i0 Z& v: \
set note (note *(exp (- (1 / k)))/ k)/ N  X* [- `6 d6 G& Q
set credibility-list (replace-item i credibility-list note)
# I# _3 A* b' k/ c  mset i (i + 1)
( g  Q7 H$ L7 j9 o$ @- s]! M, G' N  z6 r8 }& f
end
; Y3 M5 b, Z3 R4 O* K. Y8 p' `, t7 S- o/ J! i" D
to update-global-reputation-list* F5 s. x# D' z, p1 k* I% B
let j 0
5 j" H  U0 _6 rwhile[j < people]
! E# X+ A! S4 C( ][: F" ]( X9 z9 F. ]; _! [
let new 0" N2 i! o1 [* C( O1 c% o  T
;;
暂存新的一个全局声誉- Y7 q9 X' J$ \: v, ^& |: a
let i 01 b+ o# l' C" r6 v9 I( Y! j& V
let sum-money 0: C7 ^; n( m/ z6 T
let credibility-money 0
: B$ j3 ^9 ]2 c0 ywhile [i < people]
( e& o# @# j1 i0 h[
# u4 y6 F# q; Pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 T) U8 y$ Q6 G
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ c9 a9 J. x: Q3 ]* L. Rset i (i + 1)
( T% B6 l' m! m& J# Z8 Q3 z( x! z]- l$ ^# y9 F6 d, b
let k 04 }+ p$ {4 s) _+ e7 }4 \3 M+ |
let new1 0( Q2 l$ n9 ?# @1 S6 ~# a
while [k < people]4 a8 s+ L$ ?6 c% |/ y2 x
[
' |# C( q6 j" P) Yset 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)
1 U, }& A, G6 d" Wset k (k + 1)% J) B+ G% N, ^" k( _0 F. U1 B
]( ^, Z& P- j/ M1 q- W
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; K7 j) \; I8 nset global-reputation-list (replace-item j global-reputation-list new)
& ^& }( y# [/ q/ u0 `- T/ ^set j (j + 1); h' q' M# _9 k8 ~2 S9 @
]/ i. k, t9 h( f, T- x) y2 c
end
& G7 o* [  `& l1 B' K* B' a4 g0 r1 ?, h7 l2 w

# I) L+ z8 b7 X  p4 ]$ o3 o
, A5 Q; P: [( X. ^to get-color
. W$ y& r/ |% y$ K* y! ^! Z
1 R( X% y& v# E3 q* I* @. wset color blue

# n" `! P2 }& w) t: J* Kend% m" Q7 O0 X9 P' D9 w2 a

5 H  E3 L% F$ L1 [# a6 wto poll-class
. e  Z  n: g* I3 ]: Hend1 H7 ?$ R' l* Y. X
9 W. t; B+ ^' D4 d7 K/ p
to setup-plot1
0 ]8 \# M  u' U8 ^* O! }1 b: E0 l- D) [& v: h3 g6 ^
set-current-plot "Trends-of-Local-reputation"

# m9 S9 g) H: D6 L2 i& z  E. E! X3 h* g+ Z9 T& h% X, H5 W
set-plot-x-range 0 xmax

0 {: V1 `& N( A5 E) m0 B; V
5 Y6 X( j' U6 Z* e" dset-plot-y-range 0.0 ymax
$ d0 K+ B0 T* @. T& [% f. M
end% {* B* g. l5 A! \. H

& s4 [1 U; h2 g) Y/ K) p6 o# ito setup-plot2
/ R& @6 h/ y& K) X$ }% K, x& y5 p$ s8 l$ v$ E) L3 O
set-current-plot "Trends-of-global-reputation"
4 g7 G) M- D$ Z7 D9 H

+ k9 E3 ]2 @% Fset-plot-x-range 0 xmax
: o7 f4 M! R1 d+ _5 B! n5 w) ]

1 G+ L( W6 p: e5 ^set-plot-y-range 0.0 ymax
: ?" O7 v& B; q( K, Y
end
) ^6 V: V+ t6 ~0 n- j& Z3 R5 A1 z5 s( v. i9 |: J! ^3 J* C8 c, b
to setup-plot3; S: G$ e% }2 I1 {9 i
" K6 I1 K3 y2 r
set-current-plot "Trends-of-credibility"
1 P8 n, \% s0 A1 d

' p. D' c" c3 }# k, k+ o% C( sset-plot-x-range 0 xmax
: R$ q" P% ?, M0 @  C7 n+ B
3 `" Q& y4 w  }2 o. W* c+ \0 T5 B
set-plot-y-range 0.0 ymax
( A1 |1 Q) Y1 R  o
end! Q" e2 l; p- b0 p% j; o4 _

5 E2 a6 T, O- W' bto do-plots! b, |! W* [. C. X1 O4 l) U
set-current-plot "Trends-of-Local-reputation"
- L0 G( x- J- G8 _set-current-plot-pen "Honest service"
( D: ]$ K( r5 v2 t, n  D+ T- m# b/ O" `end
) z0 X1 M" Q( e
1 p; V7 r) D- f[ 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.
0 E+ k4 E' `# C- u, Y# P. G  Z& n3 R; L% P
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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