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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! ]5 U/ g7 h5 H
to do-business
1 n+ Q/ \, {: O' l& i5 X8 ] rt random 360/ o8 |1 `/ ?' s* K2 Y4 ?. q
fd 1
4 r0 F1 e6 K; s3 ]. h; o ifelse(other turtles-here != nobody)[  Q* }8 ?2 J/ [0 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.: D- ]$ P9 H; o
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % i. I- X4 Z, t9 o5 V0 H2 p- Q* Q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 L8 F: G0 _" a# ^
   set [trade-record-one-len] of self length [trade-record-one] of self6 ], c; c; R6 `* Y$ S
   set trade-record-current( list (timer) (random money-upper-limit))
) A  Y: D  ?  S% }
4 a* P/ ~" D, J0 y6 h8 F  Q问题的提示如下:
8 F) z0 r6 ~& i2 _* Z# @% p  g' r2 B; X4 m
error while turtle 50 running OF in procedure DO-BUSINESS# D7 F! ?4 z8 u# L
  called by procedure GO
4 l6 x* j, P) h, q; d& k5 m! f* pOF expected input to be a turtle agentset or turtle but got NOBODY instead.$ g+ g2 q) [; ]5 I
(halted running of go)
% N- ?- ^4 b2 d" {1 R+ o# @- B( U$ Q. L' ?7 f5 O# V
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& _9 @5 n6 U6 i
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3 f* Y+ n# f$ ^3 `; r) [
globals[
" X7 G- s8 C2 |, _, U! vxmax
! z/ L6 Y& [2 N  I: Qymax
* W" T$ ^* ^  r9 Q" F, Pglobal-reputation-list1 v2 b  R, H# T$ t  c. a2 v& d3 {

- p2 @3 V' w/ _5 k;;
每一个turtle的全局声誉都存在此LIST
+ s6 K- M. ^+ _  m+ l' `credibility-list6 ~! I6 [8 N$ w* m" J5 L
;;
每一个turtle的评价可信度# v# V. M3 l+ _8 _
honest-service
/ }4 d* O( Z! C2 p" M5 ^( g6 ~* `/ Dunhonest-service
  E( D: s1 l$ ]- u8 m0 |oscillation1 m0 i6 m( \- ?% S9 {6 n' G* W/ }
rand-dynamic
  s8 h  r+ V& P2 y" N/ Q]9 V+ }9 L& s0 J/ _5 Z
0 R$ e1 d) l) o0 \5 Z6 H" b
turtles-own[
# \6 x3 z0 s- ^0 C" vtrade-record-all
6 o1 n) y" M+ r;;a list of lists,
trade-record-one组成9 X+ [( ~1 B/ h- ^' J1 p. N; G
trade-record-one
, R4 |( J% C6 d* x* S;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ Q; M) M# V3 J

- d1 [) Q: d3 \: \. C$ V;;[
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]]: F+ A6 X1 H7 P4 r0 I1 @6 F
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]' q$ x& a" ~) V- ^+ }* I4 m% v% a3 X
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
2 ?" x3 d* m8 M4 E& s+ y* m+ J  w$ \neighbor-total
; m* ?8 m3 q# ^;;
记录该turtle的邻居节点的数目
( I$ L1 H( K* v9 t0 f4 L/ L% Dtrade-time3 i' V( r5 V- r3 Q
;;
当前发生交易的turtle的交易时间
/ \# p$ C5 D5 U: Q5 c" iappraise-give
7 `( H) X8 c  ^5 \5 ^. q% t;;
当前发生交易时给出的评价9 \/ H" X8 w& Q/ V
appraise-receive2 m7 e5 s) C" W% N5 b  K* @0 x
;;
当前发生交易时收到的评价6 n5 |3 F0 W3 S! y9 {# e
appraise-time
8 \9 y; y7 p$ L4 ]$ d1 c1 A;;
当前发生交易时的评价时间$ x2 Q, n1 F1 N  J
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
  y% V0 `: b* v% B& y' v6 C% ]- a& Utrade-times-total
- I' _) E* E5 p3 K& u;;
与当前turtle的交易总次数3 e  B8 M* ^1 z1 a. L
trade-money-total
5 B7 v* c# @0 C& n9 w" M;;
与当前turtle的交易总金额
. I+ J+ B( `. flocal-reputation
) E( I4 V  t* E) zglobal-reputation+ `0 E/ A/ o$ K# T# \. c0 w( C
credibility
! [. R# Z5 i- W;;
评价可信度,每次交易后都需要更新& O; ~) I- ^- C3 g# A) |& N
credibility-all
2 Y6 j( j- ~1 B/ x3 p;;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
6 y1 }" G* _6 ]7 e' r& B& p' s1 ]! R  h, n: T) t
;;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/ h8 S7 E9 [1 ~  d6 T% U
credibility-one' f9 z# W& [' p" o4 ~
;;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! F3 I3 l/ K8 m2 O. P/ Eglobal-proportion
4 Z+ X- m5 d$ F) wcustomer
* p+ A- y6 F; dcustomer-no8 D6 `8 \' h- \) Q9 A# I
trust-ok
& M' E2 k$ \, a. T/ ]trade-record-one-len;;trade-record-one的长度0 H& g0 x# H: C
]
$ {7 ~% c, {7 ~) T/ [. I. [
7 e6 n+ f3 x" A;;setup procedure4 h5 E6 Y* n/ G' v6 L3 i

' y/ J& H' @4 J9 q1 l2 P& F" E: J# L' {to setup- B! j6 B& j" x( A" `0 U+ a: i

3 N0 b( j- ^- _/ H5 ]! Sca
4 X! ?# W  I3 ^& p

) N' O  I6 u& E0 c8 x3 sinitialize-settings

# j. l' x! D5 _$ `" I
3 h0 \8 B, i# ]# H0 P9 f: m6 ucrt people [setup-turtles]

, I" q2 {* Z; `/ O9 ]7 y) e: C# z
+ X; H' l# J* n+ D  B6 m0 m$ U9 i4 c+ jreset-timer

0 V) p, [* Q2 T, f9 a/ r  R: p. k) S. p0 D+ ?! q
poll-class
, h1 H, {! `8 p) s' v5 m
) z8 {9 z# s! `: A# W: s; s
setup-plots

/ C" c3 v8 O! g
" p" X! q) M: _8 `( ydo-plots
3 I4 J1 d2 ^  w9 G! i6 |5 X: \  }
end# V: y: M! |/ S  a
2 U1 O: T# h8 b
to initialize-settings
* z9 d; l) P: r. V0 d. y1 k: {
3 N. i. t; I9 z9 Z8 m% G5 `set global-reputation-list []
: u) l8 D/ p5 t" P

8 ~- ?+ N8 e) e0 iset credibility-list n-values people [0.5]

6 F6 z- h3 w1 Z! u: v
6 |5 M) U8 r: n/ J3 `set honest-service 0

) ]3 @0 ^  _3 m  {& \9 z$ P" {' }* o
set unhonest-service 0

& M+ u- Z" d4 G1 {* p# u! C# I! G' y! u% M0 i- B$ R9 T( ^# C2 t5 E4 t
set oscillation 0
$ v9 [+ `- C+ ]& f

+ z$ t" F3 u! f( o$ Z" ~/ Oset rand-dynamic 0
0 M4 R' @5 _7 ~" Q9 `" o
end
- H" n" K- y9 }  D6 F: [& q5 z! z
to setup-turtles
% r; e* l) [2 aset shape "person"
+ P! `( {9 ~* d) L4 Ysetxy random-xcor random-ycor
4 i* n+ u3 c  y" ^. F2 S6 Kset trade-record-one []
- {. `$ @, p" `$ {+ P. v0 l

5 w, a1 A/ z$ R6 M. Z2 W1 {set trade-record-all n-values people [(list (? + 1) 0 0)] 9 }8 m$ Z/ G$ U/ U/ C; M

: N1 J* ]. j) ^  s9 ^set trade-record-current []
$ Q) C% M. s8 u% v) Mset credibility-receive []8 R1 d5 c1 Z2 X& D0 u# h+ |
set local-reputation 0.5  M. \5 a7 S9 g' c
set neighbor-total 00 [* }8 @- ]* `# H! `: ?) k) \) @
set trade-times-total 0- T9 g6 a5 T/ k7 j$ |  u- v- S
set trade-money-total 0
; `9 `! ^$ w$ T- a# I. Nset customer nobody# d8 q+ ~4 ~5 ?8 ^. J
set credibility-all n-values people [creat-credibility]
" @% N/ M- b, C. l% Z5 wset credibility n-values people [-1]
3 l' l' @; `, u  O3 V* m! k* }get-color
7 r  K) ^9 d- y3 c+ m; o; S! s

1 X1 t$ ~, W% \  I! R' _. |/ jend
8 e& j  O9 Z) z6 K# R! p' m; Q- b
to-report creat-credibility
0 H$ z% h. j% |! p: c0 mreport n-values people [0.5]. z' S& H: `7 y
end
2 b& E! m' \) I& w4 Z3 W+ ]0 d  K9 h  u" a( ^) s$ M
to setup-plots
) M! D! T! G) C% f- n8 x' V. M. N- _- M+ k; Y- Z" U" D
set xmax 30

$ e1 u* j4 @# n7 r% \3 E5 [% E
, ?; n  v1 v+ ~# }set ymax 1.0
0 X' X/ K% V/ o( l  I1 s4 R

9 f5 R! B& P, N- f9 xclear-all-plots
. W' R+ ?" p' a" u; S+ ]7 o+ Y
; V; k( d# ~% f% g
setup-plot1

3 @& ~7 q- J" [/ ?7 F" y' C4 o8 q  v( Y8 R: R/ U- n- A
setup-plot2
# ~4 S6 g3 }  @: e

% ~/ A3 r/ ]0 e6 C2 ~setup-plot3
+ G# |- t- `+ n
end
6 M( m1 V1 f$ o. K$ P1 w
! P% e  L4 @6 G8 R5 L;;run time procedures
% D9 D& a2 g, Y8 X9 g; K( q; N  o2 K+ c% B- E; X
to go6 o$ U3 n! {0 D; h+ `# A2 K
9 O5 R5 ?, W9 }+ X8 ]
ask turtles [do-business]

% n- e; t3 l+ n' Q- _/ u& Oend# x; X7 u$ y( q6 `) q! {8 m
8 c! {# ?0 R3 v) @4 `
to do-business & I* r/ ~4 A$ q* v5 [: o' a' q; c0 g
( \0 f# C- X& F4 B; o* J  e, a
) J' O$ s1 O$ f: R# t5 Q0 D
rt random 360
' |- \# W, h9 \2 C$ N. `2 p2 z1 m
8 ]( k* g0 M4 e* v8 ?+ b& D& `- E) s
fd 1

; D1 I+ o! v6 T, B7 k' k8 e& F. M; v" f! |$ N  D) H1 X3 M
ifelse(other turtles-here != nobody)[
0 R* u5 b( m' h, P% N( e; O! p

7 a* z# @! i7 i( m. S! j2 g+ t  X; Iset customer one-of other turtles-here

& p2 ^  y8 y+ b+ @
0 y$ K! \, o# k' |. N4 G) Z;; set [customer] of customer myself
- n5 B' N1 V* n
2 r5 [9 L- j* _1 x) d% x$ n
set [trade-record-one] of self item (([who] of customer) - 1)
! K) q4 e7 z6 Z3 H0 K: H* W5 |[trade-record-all]of self: ^2 g  t- G" _7 Z7 g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# h" c, R3 ]) B9 O
# y( C4 Y& U2 t
set [trade-record-one] of customer item (([who] of self) - 1)
8 P2 X; z! E( @# [9 Z7 ~3 `2 P" O[trade-record-all]of customer
" w+ h( o7 y- D1 ]3 O: L1 j

1 ]7 R- _( _+ e! J5 G# aset [trade-record-one-len] of self length [trade-record-one] of self
$ p7 }+ l, D; U4 x

3 ]0 ]+ j4 P$ |set trade-record-current( list (timer) (random money-upper-limit))
+ K/ x3 l% ~! |4 D" [( S

; l0 q4 K; s- u5 wask self [do-trust]  ?6 m3 N/ @' p9 q
;;
先求ij的信任度& X. R6 D! I# @% d4 @* S
4 [; n! a; ?5 l6 j4 o0 S, B
if ([trust-ok] of self)* ]6 m4 f' b2 P* x4 y
;;
根据ij的信任度来决定是否与j进行交易[
; @; D  C, s3 V. p# ]1 t1 zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, M0 C& C8 b2 e* e
4 C# F7 w# o: c) s[

% R  S3 S- X- u+ ?5 G
* r  G  [( d. \# b) i$ H) [* C; udo-trade

3 q  X% F& _4 L0 B- O; i8 L# \! ^7 G7 D% X$ }
update-credibility-ijl

$ J. v8 u7 D9 C" {. Y9 O
9 H* v3 b/ y) a( Jupdate-credibility-list" B& W' w0 O7 Y6 c6 a! ]- \$ f
1 S) c4 n& ]5 P3 g9 R

! J8 c" C1 l1 `) i, Cupdate-global-reputation-list
0 H8 r( u8 O3 ^% j2 r4 J

" W/ k! Y5 w& U2 O% Lpoll-class
- l" E0 x$ X6 O2 F: q: p9 K* m; @

$ @0 \) z! ?) x) r- \& S% D% ^0 aget-color

1 O$ H% E. u8 l) \
) n1 X* u2 O, f  n& r8 x) [" l" []]
/ ]4 h, m/ s3 A& Y2 t8 J/ o; e* ~
) ^  Z2 B& q( ~  n8 Y# @; m;;
如果所得的信任度满足条件,则进行交易
6 B0 L' k# |! f: P9 h+ A5 C2 O7 u7 k& L+ v
[
' M7 w1 D/ v6 q6 P# q1 j9 D7 _

, N+ b4 c7 m% Q5 irt random 360
& C! B! m7 ^+ b7 @

0 k! v! I7 ]0 a2 ~5 ofd 1

* D. b2 n/ N) H
+ K# M$ g* Q- q1 [. {' \, c]
% \3 k" `- q9 w( ?. \7 u" h3 x
1 Q( {+ S8 ~! e6 _4 I8 t
end
1 d3 u2 m. a5 M5 b- d1 k
5 X! ^& h! \6 a- X" b4 i9 O
to do-trust 5 X! C0 t+ n- M* }2 _/ X& L
set trust-ok False
, e/ J! s2 t2 G& C
: z8 W) s$ x4 f3 X, m4 B/ j

8 F5 Z3 D5 x- i8 a8 ?2 glet max-trade-times 0# Q2 ~  |2 p: G8 V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]  ]6 h6 b5 |3 h* l% w( \& v
let max-trade-money 0
3 _3 m* \0 v4 v+ D+ Aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 L" Z8 `6 V6 |/ _! e6 t
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- T! C4 y- g" m0 T+ X. c

0 y" n8 ^" A8 S8 G% Q( K

" p/ g6 \. a7 I4 H  M6 p* w/ ?: P6 jget-global-proportion$ G2 Q7 e7 `/ o2 M- b, g# T
let trust-value% O! j% ^6 \  Z6 n2 a
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)

  |" _1 u/ x8 K# t! n! b! rif(trust-value > trade-trust-value)/ s2 Y# ~" ^4 V9 X
[set trust-ok true]
8 p+ b9 Q& V" y0 ~2 F0 Tend
+ s/ z6 d( j0 `0 }( v( i( m
7 `# y$ Q! X' r5 t1 T' P+ qto get-global-proportion
0 A3 Y+ \6 e* x, Lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)& w, Z* }# `! ^
[set global-proportion 0]  A# W$ J  A8 l9 i9 N- [1 _0 x
[let i 0
9 l! {: F. {8 j+ slet sum-money 01 c1 E" b& z. h8 k( n$ ]
while[ i < people]
2 V5 g  B/ i( J" Q: O[9 i& k1 R/ k6 F) a2 W
if( length (item i
$ S4 @% Q) M2 l7 i1 x" Z[trade-record-all] of customer) > 3 )

! h) i/ f2 }3 _2 I[' U) i) V) |9 v- [) x. {3 `& R1 M
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ }% M2 N/ x+ _! o# W+ V) M
]
  z& e* ~2 g' ?% X+ E]/ \4 l* M+ {. J! r! D$ ^: M
let j 0
. t. U' P* [7 L% t% ^. v+ q' elet note 0
% u. i! d5 e6 J, Dwhile[ j < people]/ ^5 U2 i2 [4 K1 P2 ]) g1 l
[
: f6 }0 K; T9 G- o. h( D* Pif( length (item i, W6 A8 W2 I2 {! S2 M; j
[trade-record-all] of customer) > 3 )
/ Y8 j7 [: R& x5 R; n7 x* M3 E
[3 J8 w+ }2 O5 h0 w+ t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 c: _4 ]# S$ H' f+ q# ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* k4 i/ e  V  Q/ ]  @+ _% B
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 c" v( T) w  }/ I
]1 |. r. E/ V6 U, M0 q
]. }: `/ a9 u- Y) M9 j
set global-proportion note* m! j4 A- Y! @' j6 C$ A
]# z& B5 t: @' }  @4 R
end
( i; I/ _( U. p4 @: D6 Z' O; h( F' H3 _$ O$ F+ P/ t' I
to do-trade* l. q6 W; [# S7 d
;;
这个过程实际上是给双方作出评价的过程
2 W' G5 w2 a. H" e6 H$ E  W1 ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% J/ @( w0 F8 Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 V" ?! l. A% U
set trade-record-current lput(timer) trade-record-current
( E/ ^, ?4 Y' g  m2 d;;
评价时间
0 ]8 z/ R8 b( z, vask myself [+ N7 e' L8 {$ q; N
update-local-reputation
7 ]/ L  g( j. B% ?8 ]5 ?* B# Nset trade-record-current lput([local-reputation] of myself) trade-record-current, o( R8 u9 R4 W  u  ?
]3 I% n' \7 H. o! G0 B( F+ Y% Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 D$ u4 Q0 g. l. ^
;;
将此次交易的记录加入到trade-record-one  M! Y! F6 U! b
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" b! ^2 B& r# y% ~
let note (item 2 trade-record-current )4 s6 c8 O5 {5 B' M% j+ a
set trade-record-current) x6 N( `1 J* k, O
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 K" k( g+ V$ u  k' Aset trade-record-current! s9 D6 A  \7 g' j' \5 ?
(replace-item 3 trade-record-current note)
% J( V8 H6 M4 `( R7 o
3 d. t+ b. y9 M2 F! z: d. t
6 e  M2 t2 H9 _4 w( j
ask customer [2 {8 C* ]% ]* z, y8 ?* I
update-local-reputation0 ]/ I  h7 W0 x4 C. a& L
set trade-record-current
7 G7 ]+ P( {) G' o; o(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; A2 V2 {; I* O' ^]
6 K' r- _" y0 d# g& H; H& u$ {# L( T" x9 W6 X
5 d2 N9 g/ t( D; q9 K5 [2 `
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  I: y4 v7 U( }9 e/ K0 b8 a
0 D/ \9 M8 H. F' ]$ M8 E/ J
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% h/ U' F& R& c2 S6 E0 [; Q; Z; o# e
;;
将此次交易的记录加入到customertrade-record-all
1 P! \. j9 r7 Z8 [7 l# Aend  i6 ~6 s5 ?: `3 C
% ]; N  r% d: W3 y) M
to update-local-reputation
0 E) U/ L% n* k" z( _set [trade-record-one-len] of myself length [trade-record-one] of myself
/ j1 f, z, H3 e8 z8 e/ p  A0 N' L0 j1 e8 V' I
) w% F1 S5 `' J: d4 T& W) v
;;if [trade-record-one-len] of myself > 3

! G# T: E1 q! H0 p/ K2 f* }update-neighbor-total
, o" b. F. D) M' P2 K# H& c- O3 ^;;
更新邻居节点的数目,在此进行1 _$ A! J2 N% U0 ^
let i 3
' v0 M0 c& [' u" ^let sum-time 0
) e3 m% F# z9 ?. f. h: twhile[i < [trade-record-one-len] of myself]/ F. x$ g3 i0 U: Z. r- l
[
  c. ]0 Y6 C: D/ iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 O( _2 w+ l& ^/ r5 R4 Dset i
1 M4 U6 x! \  i- n  g( i + 1)
* e8 I/ l# t7 Y4 ^* H  C, u: m
]* j& \, ^& H/ a5 j) E2 `
let j 3
, p: E+ v& D& Clet sum-money 0
$ H" Y( Q& h1 @while[j < [trade-record-one-len] of myself]
: m- H  e3 Z) }8 S' z[
/ Z$ j" S; K$ I# N0 [! p5 h4 sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)9 n; |/ _2 V+ W+ J
set j
, E3 `# a; W! N% i: Q( j + 1)
3 V4 j& G! h; O5 ?6 h) a$ g
]# c% [+ }% q" M
let k 3
6 Y+ ]) Q( p2 Q& W, a' tlet power 0- h9 ^9 q5 ?& N& z2 M$ x7 r( q
let local 0
6 S) N; [5 c7 n& R. L# Fwhile [k <[trade-record-one-len] of myself]  I1 ^" u9 f- _6 t; b# S
[
; F* K/ z5 N' l& W+ Vset 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)
2 U6 G6 w* [$ ~$ T+ X1 d% @7 hset k (k + 1)5 l/ [/ ^, f6 X( @
]
/ K$ [3 z" j1 g8 ~7 d8 {- i0 n5 `set [local-reputation] of myself (local)7 q: a2 S9 L* {9 S7 x
end3 e4 F! E* T3 t' Q$ ^8 C3 e! y" x
* Q+ }2 `/ b6 D0 m# x: C3 S3 c6 ?
to update-neighbor-total% ~( B6 K3 H8 E2 C, Q  K& |9 k2 ~
" J+ c4 M6 R# c0 z) b
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* ?1 F! t( P% x" J4 V
+ p; P; E) J) h2 r+ J5 Z- E
* j3 K& W& W4 }: Q7 v4 D* m1 a# L
end
5 g8 G( x( g# l3 w. y9 O9 r
3 W/ ]6 e1 A  K7 j2 I- \to update-credibility-ijl 1 v6 d' }; c0 W4 c( `: A

: h9 k& O; _, L0 u& s" f;;
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。
  `* L2 I5 X! r, q  q4 k3 Glet l 0
9 x! Y1 K* \5 F  U- T2 j$ Jwhile[ l < people ]
. e2 d( h  Q3 f( l4 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1 d: D7 c' K: _
[
8 O5 c1 C' n) d8 t. [9 K3 o* Llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) {6 e% g/ ]8 _+ oif (trade-record-one-j-l-len > 3)
: {9 E9 o1 ?( p) z[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
* \" |0 G) [( ^0 L! w3 Dlet i 3& y% ~8 U& K; u2 W% |
let sum-time 0" n) i) p# t: I5 |
while[i < trade-record-one-len]) A' l  `; E& ?4 Z% u
[+ A' [& q4 ^& W) n) }+ \
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% o6 U& j, r6 V+ P' oset i
1 l! c. p& I) k( i + 1)

+ B. Q0 o% x3 t7 U! Y/ V]
% x6 Q# [# }) p5 ?* Flet credibility-i-j-l 07 k  k% R: q( W+ v+ W
;;i
评价(jjl的评价)3 p+ E% j0 o( a" p3 G* j
let j 3: [* {3 R  f3 \' ~) W9 g
let k 41 P* x9 x+ ?% z1 X
while[j < trade-record-one-len]+ Y" l. l1 U: z4 i) U
[
$ K# n' q& O5 V0 Q) \) h1 xwhile [((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 ^* a* o  j2 K1 b0 H# G) Q4 ]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 u. V: z  L$ X( E) l& Sset j: m. |% z$ K9 [, u, U# f/ w# T9 e
( j + 1)

. n3 z  l. p. z6 R2 d: s  u: n]
( y6 ~8 p+ w$ Y8 a& f& eset [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 ))
2 E0 z) F( d- P! @% i
" w7 }5 s% X% _! ?' U' P8 P# O

# F6 t, s( W; k# L" h8 c0 Rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& G8 e! W+ R! {( z3 g$ c
;;
及时更新il的评价质量的评价
  y" G* E. p# O- Y* Iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  }+ ]$ b1 @6 p7 r/ }& Q
set l (l + 1)
! s$ q1 a# ^* N4 `6 @7 q]% K1 E( f  U' U/ O8 a; m  C) C
end& R" ]) I4 W  k, T' O. ^9 b# C

& \! H% ?* l; P8 ~; d9 {- C# N( dto update-credibility-list* C' X" A  e0 K4 y
let i 0
7 @1 _# W5 K: o6 }while[i < people]2 h& ~+ o3 ?, @9 o- f$ O) \% b
[
9 C, _6 R; p- J' G" @( _. s& j3 l$ Xlet j 0. N; H3 Y0 e+ g/ H* B% [
let note 0
7 K3 M/ o! [& h& N7 Clet k 0( C: h: d8 x% `3 K
;;
计作出过评价的邻居节点的数目
! F7 H5 c2 U3 B6 G- [/ t, v3 @2 Owhile[j < people]$ K- F% L  K+ p! s& n
[
3 e8 s7 X8 Y! r: C# B1 Bif (item j( [credibility] of turtle (i + 1)) != -1)- t; ~, p3 _* R- K7 `
;;
判断是否给本turtle的评价质量做出过评价的节点
# d, \2 ]8 W# G3 v4 F$ J( k  \[set note (note + item j ([credibility]of turtle (i + 1)))! ]* Y8 k! _: a/ ~( o
;;*(exp (-(people - 2)))/(people - 2))]
% U3 D1 j! ]. e, L9 G5 j
set k (k + 1)
# R2 e$ {+ v% X; g5 c8 a]  A/ D/ O" f4 h' {7 u; I6 a
set j (j + 1)
: G3 f; _3 O! K# l3 W8 F]
& D" g2 a4 y8 I3 k* f+ M' [set note (note *(exp (- (1 / k)))/ k)4 Z# w  }6 Q+ ~, I* R: [
set credibility-list (replace-item i credibility-list note)
. M. l4 e+ D. |, s& nset i (i + 1)
6 y, m: {2 J- b]
) l6 j3 {0 u9 W& ~' H( `7 Q* n! iend/ i8 t' i0 ?( g5 q, ^, c8 n# P
! Y$ t" ~  \7 z. N/ K& d3 x
to update-global-reputation-list
/ {5 b* d2 @9 w$ V9 hlet j 0
" s9 j) E: s1 l) y/ ^1 V! \% R+ ywhile[j < people]! L: P& u" R  K
[, k$ c( f. I2 E8 z- h/ h5 f
let new 08 t: I5 W: F3 T( c3 o
;;
暂存新的一个全局声誉
* V' m; _" \$ ~: @let i 0# v( L. k7 m4 d- g2 [
let sum-money 0& W" R7 i$ C( V, c3 o8 T
let credibility-money 0
( A+ p) S& ~$ u! R0 n' qwhile [i < people]
* Q( k+ ?% c9 y4 Y' Y6 f[
) u2 G3 R7 v: O2 Eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 T( ?8 h7 J5 b# R
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ E& A% x  ^' f# h& y; L8 a
set i (i + 1)% ?- g! x8 y( w: @
]6 E, t$ J/ G3 y
let k 0
) K$ m- j  [* H$ z- Jlet new1 0+ c# S0 A+ L" n! g: n
while [k < people]  U8 N+ h. g' J$ }) n8 {9 o" P
[( \6 |/ i! X$ S+ k
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
9 ~, s6 z. h. o( V) qset k (k + 1)
8 z. y; X) W$ {) I) s  S9 t# Z$ R]
& y3 B$ V' p- A0 dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - Q' A# B# i6 c! K" m
set global-reputation-list (replace-item j global-reputation-list new)
& B4 F' a9 u5 ^7 Wset j (j + 1)
' z; L. [9 p6 \]
9 e" Z5 Q: j0 X6 b! cend
* E! h! V2 C5 F8 [, _9 r  y2 D6 P( Q7 Q
2 Z1 G! x# G* K4 K# b
3 q% n" i2 U2 H- h# ?5 X
to get-color9 q2 H& x& M" v, M

: l: J* w/ ?: t6 _5 yset color blue
4 q! c& N& e+ t
end
& t, B5 B* N/ f: ~4 a6 _* i
- [- T- u. d8 F4 @to poll-class/ o4 s! H/ j! Z! o$ m
end
, [! C# h8 e2 X/ U3 a+ d5 i8 [9 e! v0 p
* W7 j$ y% U0 b( j6 o/ hto setup-plot1
9 ^1 |8 h! H% p$ d6 v) p
* A; w# e0 d/ ]* qset-current-plot "Trends-of-Local-reputation"

7 a9 j( o' j- m
/ F- M0 T1 m! \& Zset-plot-x-range 0 xmax
; p2 p0 n, r  v. O

8 s) K3 q7 x8 Y$ e  Aset-plot-y-range 0.0 ymax

1 {6 f  e1 w9 {& ]$ K# L* Uend# e$ \. T  ]4 W! D- S5 ^

3 }1 b/ r/ f0 N' Fto setup-plot26 [/ r1 X6 `) B! P2 f( l/ A# I

! c7 ^7 D$ I  ]6 x7 G4 \/ s$ Fset-current-plot "Trends-of-global-reputation"

3 H, B8 {- n3 T1 ^7 [+ T& Q* d" s! O2 ^5 J7 ^
set-plot-x-range 0 xmax
0 G7 M" U; f/ L) X- S8 M0 @' ~

: u# y0 L* L1 @( Gset-plot-y-range 0.0 ymax

$ ^8 R2 L# Y* w# `  F% Wend
# v% h6 w6 U& ?, P% {$ E& {: Z& ?: [% R* y- e
to setup-plot34 b! ?7 L1 n2 \5 `8 n- M, ?

4 y% M: g5 S, hset-current-plot "Trends-of-credibility"

% ~7 m, Z& L5 f$ o. T
0 }% c* Y" {5 l7 I  H* O: Zset-plot-x-range 0 xmax

: r& ^8 l0 ?1 v9 g  ?. p. \/ b" T3 T. ]
set-plot-y-range 0.0 ymax

1 h: N; Z2 p" e8 k) k( Vend+ X# p* v) G9 n( k0 l0 S7 y. e: u* ?4 W
  H1 p% V6 u5 d3 R0 H0 R, w, U2 a1 a7 m
to do-plots2 Y; ^1 q/ b* l6 X. a6 P/ }
set-current-plot "Trends-of-Local-reputation"
4 F1 l1 `3 b1 A; }" D/ @! Mset-current-plot-pen "Honest service"
' D/ w9 C+ s$ |$ U: j  |end% w* b6 w1 b6 G& @3 u/ }6 _! P

/ [% R2 x. ^0 l[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.0 T/ @: \5 T5 s' y! r- o3 L: w  _
$ U! r6 O0 i6 J. C' E2 ]) P( O
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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