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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:$ d/ \1 O0 x& R1 P1 Q
to do-business ) n' W" n" U  X+ {: U
rt random 360/ W* x, |5 j, ?; p$ B7 R/ v* k
fd 1
' O" w& b8 ^4 n$ { ifelse(other turtles-here != nobody)[4 M  H1 b4 _5 o7 z
   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.
, x* [. k3 r/ T. \) |   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; M( G" \6 X2 k- y; X+ ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, Q, w9 f/ |; N0 T6 |
   set [trade-record-one-len] of self length [trade-record-one] of self/ X& C1 |0 ?5 H
   set trade-record-current( list (timer) (random money-upper-limit))- ?# [  [1 C& s! N1 B& h
& i7 Z9 a  s" P
问题的提示如下:; j# [1 `8 C. m' S$ |1 _

5 S$ o3 u. t5 [' `- c3 l& B7 nerror while turtle 50 running OF in procedure DO-BUSINESS
/ R% z# _2 B1 v% K2 J  called by procedure GO
% n: d( U0 y# w  W$ q$ Y. ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 ?' \8 u* d' J8 E! _
(halted running of go)
) L) K8 f( Q4 t( L/ T* ^# j8 m$ W9 r
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~~. O6 E/ j" J( A2 e  y6 \) P
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" a: Z" s& n, Y3 d; K3 w$ m( I, o
globals[% A5 W( `1 u3 ?4 D4 m
xmax
0 l$ B! T& w9 E9 s* `* ~ymax
) X5 G2 b/ }' a. Gglobal-reputation-list
" l' L9 j; N1 C! T1 V0 N
+ I  I3 E& V" R. {) v# w3 G. M5 i;;
每一个turtle的全局声誉都存在此LIST) f: v( i" H* I- t; g8 o, ?6 Z! V
credibility-list
2 i1 U7 N1 s( s0 ]6 t# N7 P;;
每一个turtle的评价可信度1 X, f6 D$ }$ Q
honest-service
. q' v: g/ U. i1 S9 ^+ aunhonest-service' O  i$ P( r2 x$ a
oscillation0 G; k6 T- H# I$ Q
rand-dynamic- s! r$ B* o( W8 u
]+ `/ R: P- {8 M

0 ]3 ?9 {) Z( V& t6 j) C8 _turtles-own[" p3 t9 f% g; U
trade-record-all& x. ]7 b/ D5 p; s
;;a list of lists,
trade-record-one组成
" X; W' G6 r# e' n: q! E/ Qtrade-record-one5 T- p( Z& \% s/ q) c# M: ^
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 H3 y) a( u" y5 m
3 d+ b/ A4 W; x: 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]]7 O) ^; n- v- G" ]: x
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]( y, P2 |" o: p7 A$ [1 u
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
! `/ X& G5 S' x, vneighbor-total
$ q+ {! X( e( H. v, ]4 o5 f! I8 y;;
记录该turtle的邻居节点的数目
# q, S" l, d" {! }! _, m, w  ]trade-time
9 o/ O5 {, a, y- W+ q;;
当前发生交易的turtle的交易时间
- R8 T6 h% r) V1 ]appraise-give1 i( v6 p2 u- D  f, O
;;
当前发生交易时给出的评价
, c3 C) c$ e: r. O4 Eappraise-receive; o+ E) D0 n. c! u* e
;;
当前发生交易时收到的评价
4 ^# l  u* T5 K1 _* vappraise-time
/ a6 ~! Y( X7 n;;
当前发生交易时的评价时间
" @1 r' v: }8 g& i4 O" Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 Z: Q0 X* A# j1 ]; t6 q! R0 K, Atrade-times-total
7 t- ]. a/ j6 w4 O0 M* b6 e;;
与当前turtle的交易总次数
3 f$ d) Z6 w0 ^! b* Itrade-money-total; b' F( @4 C- ]+ y* W6 R3 E
;;
与当前turtle的交易总金额
" z; F4 o4 i; x  b! R$ I/ Flocal-reputation
$ M' {8 K! w  Q; e/ _global-reputation
' ]5 o) s5 H0 I% C2 P4 Rcredibility
0 }9 F& @9 z  L# z" Q, p;;
评价可信度,每次交易后都需要更新
. d2 _( m  q; r  G4 Qcredibility-all
1 I1 b4 U. k; N3 O8 L0 V6 v;;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0 y% o* c7 k% P2 r! R

4 [4 v3 R* D) m" T6 R- M7 M;;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
! }! t+ m. D9 e, j& Q! Xcredibility-one
! N; I. ~% z( E; I$ y( y. ]( 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+ d" E5 k9 [6 H( I7 X
global-proportion
+ `- Q! D+ m6 N1 Kcustomer
- h* a9 B+ J0 B2 S; H& i8 Zcustomer-no
- }8 S1 r( e9 j) Utrust-ok9 @2 D- D2 r1 Y' S
trade-record-one-len;;trade-record-one的长度9 q3 C+ R% Z* p' W0 C) S/ l
]
; a7 D$ V, K6 v" U' m/ }8 @+ j4 J  `) e' n
;;setup procedure
" P# q/ J  a! V* S- ^# y: k, e0 q' n, |( V
to setup7 X! r, d' S) j# f+ ~
3 E; a5 b( f2 _8 u  ]
ca
7 m& @/ q1 q5 `/ A* ^1 o. R

( G$ X! _5 J3 l9 Winitialize-settings
8 h* M! T: b* `& R  \/ p# ?
* i9 u+ p. P. O4 G% a
crt people [setup-turtles]

/ O5 ]! p8 B7 `' K) U; [5 V/ J5 V
" p, ~3 e! p9 t4 |. q$ J" qreset-timer
! `3 D& H# l2 P9 f* C

, f: E. N2 G4 i% Q& \& Spoll-class

- b% S4 Z6 h: p' s! Q# p$ B
" ]* W  g" F$ ?8 B! f% Esetup-plots
% R( I* }/ q3 w* J8 U: f0 C5 V  W; ~

+ @" m  K& P% K2 ddo-plots
/ K3 ?# N  U' Z) q' C
end2 i6 S' f5 N* g; W
( S: W# ?; Z7 k' M3 F
to initialize-settings
4 ~0 ?& ]/ S! p; ^9 s3 k
8 |6 T8 y* K: y* L+ zset global-reputation-list []
( n& z5 _, ^* k7 C! w7 h, H4 F( G
2 A/ v/ b" J: ^( A" ?6 Q$ h5 D+ G& {
set credibility-list n-values people [0.5]

. S2 K) N. p$ t, z$ D7 t
% u. r' t3 z- p3 m, E% [! ]* lset honest-service 0

3 l5 G/ S: R5 A# c! F
  {0 ^) f4 [! Q' ~; X/ kset unhonest-service 0

' e2 j, H$ V* a# E" [5 \
, A/ p& B+ r) L/ A+ i! mset oscillation 0
: H& ^& N3 V3 Y6 a

: _2 o! A: S7 b& q& r% Iset rand-dynamic 0
4 {1 \3 i) S3 k5 M2 Y
end) q: B7 M- |7 v- ?7 s3 w4 J

( Q. i8 r& V3 P: Wto setup-turtles . \+ a# _; d$ U. R& S6 M5 E
set shape "person". j3 _7 B- h1 \5 A. ?
setxy random-xcor random-ycor
6 j$ ^4 ~/ V5 c( y2 Gset trade-record-one []
, i% t3 E1 p# p' o
/ g0 }& m0 z  ?3 Z8 O, I6 F+ b
set trade-record-all n-values people [(list (? + 1) 0 0)] # W) m; `" w, [( F* p  H. c

2 S3 i8 [! B$ U" V# ~/ V; h2 q" }set trade-record-current []
5 |; X; A4 ]% k& oset credibility-receive []# g2 L* m: E) h, {5 }& f$ Q; ]3 w
set local-reputation 0.5) r: s" }- H, O- n2 F
set neighbor-total 0
2 W; i# m6 E" T2 Z3 iset trade-times-total 0/ ~, d7 D7 G9 N4 m) ]8 a8 N
set trade-money-total 0" l8 R3 E- M5 w( p7 ~, \
set customer nobody! J6 A$ G: V, t$ C8 {/ H* B5 X
set credibility-all n-values people [creat-credibility]
! e1 D( g  N: m% C* S1 m& B* ?set credibility n-values people [-1]
0 L3 W- P! c1 h1 z' yget-color. w  V$ D0 w: X5 I4 U1 p! L

5 j& E0 j5 e/ wend
+ ~& w; z" s4 ?, Y+ o& o7 _, R
: A7 A2 t" P2 |: t( O* B' fto-report creat-credibility
8 o  m4 U; b" Freport n-values people [0.5]
4 K7 Q8 e: a4 A# yend
9 Y. s, M" a! \" H+ [' C8 p
* M3 F! y: Y" q" q/ Q8 J+ _; t7 U, xto setup-plots  o. g- p& v7 }6 J: K, c( t; G

4 j) K5 V+ t$ e, u& Xset xmax 30
) I& D0 I& v$ B3 H) o8 Z

! W) r4 R' _9 m- j8 M2 `set ymax 1.0

  k4 Z, M" d$ y) h
: l3 q1 j0 J8 A' D, L! Kclear-all-plots
" ^; M# q* q0 _

+ G2 ~' y: W' U) ?. a8 A6 ]setup-plot1
) D7 r9 I( }( |; v- m" q# }' }

/ Q/ ~( {( X* \setup-plot2

, i- U- [$ i0 f! R  U# G: K" ^  ^7 i; B' Z
setup-plot3

1 V8 r9 x' B& j. y2 Zend
* W) y8 E4 u# C* a" S
4 v# I7 @+ }6 G; f;;run time procedures9 Y! i! F9 n% z& v2 d% l

- m& ]; \: Y+ V  Q0 I+ wto go
: V$ x' G( A; W3 G! b8 z) k: z
, j/ {: j& c  v4 D2 r# aask turtles [do-business]

# M& p, Q1 O+ w, wend8 Y3 u+ ?+ Q' [& s5 P# o
- z6 V2 I1 k" ~3 q: q' L$ o
to do-business $ S  F$ m- t6 z! k1 C
/ o( p) a. T2 w" ~

1 b: [: v# T) V# T( M8 x2 Ert random 360
# w6 p: P/ e: ]
, c2 @" I! i7 k' M2 u+ |) X
fd 1
3 _' `/ K1 ~, w6 e7 A/ J( r
6 Z: j# O* B* g
ifelse(other turtles-here != nobody)[
- Q) V! L9 `% w! b5 V2 n* \

- B  d/ w2 i) L# F" q, E8 p4 \1 cset customer one-of other turtles-here

* H; e  p7 c5 z, x6 M- ^) w
4 c1 U# x: M1 f7 g( ~# y% E;; set [customer] of customer myself
. w  Z  b0 p0 H: A2 Y6 r; I+ s* R

& W# O' w& F0 J# L. v, Eset [trade-record-one] of self item (([who] of customer) - 1)4 b0 u1 t7 z5 o2 z$ O4 k
[trade-record-all]of self
9 T1 U6 H/ \/ c3 M8 Q& C$ {;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& @8 q! e" Z' L0 }! ~/ m, d- R$ D5 o  B9 n
set [trade-record-one] of customer item (([who] of self) - 1)
# g( E2 @- P2 o% T  X$ \' H[trade-record-all]of customer
' s/ N3 Q/ ]4 V  E! S

9 V2 d7 C6 \& v4 I; }set [trade-record-one-len] of self length [trade-record-one] of self

% |+ `0 L4 \+ \# ^) g5 j3 D2 F3 @8 x/ D7 A3 S. E) ^/ D( V9 x
set trade-record-current( list (timer) (random money-upper-limit))

/ ~% t# h! B! L6 H5 M
/ P3 B- K2 x3 dask self [do-trust]( A- I. r6 t; l) h4 Y& h  b# x2 s
;;
先求ij的信任度) b' @8 S6 i6 f2 M3 Q( z

3 a7 h& y, D: a- [0 U5 W! |if ([trust-ok] of self)
, _% B& F# q/ s, ]. _" c. A;;
根据ij的信任度来决定是否与j进行交易[
! f9 E- K- W. {9 [! n" ~0 ]7 P9 @ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 P+ F- h+ f/ d& E9 r! u" F2 Q3 x7 s( I0 f1 O
[

2 u$ I) M2 J+ h' u* G- |- J! v8 C
( ?- n+ l# V" `; edo-trade

; X0 e4 u) I9 a! u; W' ?$ Q# w1 @7 J( W
update-credibility-ijl

9 }- |' a4 w" I6 ]$ |8 J; k6 y" ~- Y: D2 u- T* [: f, E( ?. {
update-credibility-list
. C+ J. E* V# p0 I

( j' W4 ~( t; [  b5 w! T
9 {. U5 l7 e0 D. u6 y- Cupdate-global-reputation-list

2 e3 B' }0 T6 G4 |; n7 x( w
9 S- I, I4 Y2 f' V, P- jpoll-class
9 S; ]8 E* ^( B/ o' O
7 F4 V/ t, T7 [$ Z( h) E% U& f# |8 h
get-color

# G) q0 W9 `  [6 }: c4 E% M$ L* E& V" f: z
]]
/ t) V' U$ k+ ]8 [2 z% q, L  o2 l" o+ A' u
;;
如果所得的信任度满足条件,则进行交易$ v7 n& V* Z# q6 J% I- [) G; V& ?
: I. k- U% U3 d! w* k
[
9 S8 H6 j: N, O9 ], S1 }
; Q+ V8 n# ]% L) P- o
rt random 360
' m5 k$ g: I0 g$ ?5 E
& Y; o2 i' g- [/ h* v0 q: ?
fd 1
3 A+ |6 E0 q; m3 M$ }& j
0 @9 K. x1 H/ i3 U+ |: @
]
! l( J( O0 ^' U, W! d6 [* Z) K
4 s$ c( D5 ~' z2 ?7 U; |
end

* ]# P: m" [; J! h5 `! Y0 A8 u0 j# I6 _4 l$ V9 ~$ g- k
to do-trust ; t( H* y3 `9 o7 o. x% M  O0 |) U
set trust-ok False
5 |! A# i1 H( T  r3 i1 Z9 g: _' P$ ~% \8 o

) W- V/ S6 Y- I) A" M8 N' elet max-trade-times 09 P1 }. Q: o6 P' f4 J$ v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 K  {: F- x! K; A+ Slet max-trade-money 0  n+ y' W% Y0 F7 s# J3 W
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" i5 t3 i5 j9 x. Y- q, E, ^let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). d7 V% {* X; g

5 ^0 C  V# g! C
% t" n% [  }# f
get-global-proportion* Z5 r, U2 o7 o7 O9 L) w
let trust-value) t9 }0 o# ?* e" u) g% b; F5 H
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)

" P* J& W) ?9 }) lif(trust-value > trade-trust-value)* @5 L+ x6 E: C2 X6 q1 f
[set trust-ok true]
* y9 Z0 G# C; k- X: mend8 r5 m" w: v+ G- t  [

% l% K) r. @3 d9 d) Yto get-global-proportion
. a8 A5 F9 ^8 `ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)' V0 n  k8 x7 l& c
[set global-proportion 0]
5 i' ^8 A: c( ^4 `[let i 07 z2 R( l; u3 e. o
let sum-money 0! L! ?* h2 d4 k3 K) S; f9 W: F" _: a) G: q
while[ i < people]0 q) c" ]$ h# \% h! b/ p
[
1 r# w7 O$ Z' h8 ^2 H3 w7 yif( length (item i: L5 v$ d9 D: ]/ K2 F. n
[trade-record-all] of customer) > 3 )

5 ?  S+ e7 D1 Y8 _: q' R[+ y, Y/ @8 ?. @2 q% Q8 K5 M
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)): b$ e& c& }5 Q6 t: n6 b& w
]2 k* j$ T/ ^& L9 y+ P; J- \5 i# |
]
6 G1 @1 S$ r1 O% t9 M: j' Jlet j 05 B7 s# N2 @) \" s
let note 0: s/ c, ]* f" n
while[ j < people]- i1 H$ i. F4 H
[, [! i& z7 a# _, ^1 H. R
if( length (item i
! j" ^! G. ]4 `( f[trade-record-all] of customer) > 3 )

. R4 k6 g% C9 ~0 X[/ Q8 g' b9 D& Z5 ~# H+ c5 x
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 ^# t9 m6 m) @" }% q# l! Q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; @, V1 b7 s, M9 Y! [. ~# W* d
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% p/ ?- a5 v4 e/ v]& w* @$ h/ {% d
]
: p  h; c  t0 ]8 yset global-proportion note
5 e7 x3 Q/ O3 ?) ~]0 t* ~0 Q2 d) k- r
end7 j. b" w% S& \- W" ?/ ~2 R

$ b( L; v; ~" A! [( M  t* j& lto do-trade8 {, o$ S+ F" t2 c  B
;;
这个过程实际上是给双方作出评价的过程
' P: S' \: M' Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ Z8 W/ i6 [3 S! ]) vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 _# y9 \' {6 x( v7 Mset trade-record-current lput(timer) trade-record-current
: F4 X8 G) r2 }+ L;;
评价时间
  {  I5 s' `+ s: f3 Y. c0 eask myself [
( e" H( L& b" r! {) M; u; ~! \update-local-reputation
/ \/ ^: T) x3 X) C  dset trade-record-current lput([local-reputation] of myself) trade-record-current& P" e. W" W$ a1 d2 ^
]
$ d4 h! q7 \& w5 R3 M, _set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 ?5 X- n0 M5 f;;
将此次交易的记录加入到trade-record-one
- U( w& W6 p  Z# e6 p9 Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# ~- z1 _" F% k2 Z. h% ilet note (item 2 trade-record-current )
0 c* L# X  J/ C% N  x. Y" Xset trade-record-current
3 [/ c$ O# Q5 r- n* Q2 o& }7 W(replace-item 2 trade-record-current (item 3 trade-record-current))
% J. C  Y5 o' X, p# V
set trade-record-current
3 Y2 |" I/ j* A1 O: I(replace-item 3 trade-record-current note)( D( _. I! o6 p: \; x& V) Q

  @  |* B/ u6 \( E0 @) I0 L9 `
1 G1 P5 `' I4 G' G3 O& |, D
ask customer [) P9 _, F5 h, D* G
update-local-reputation
# ~% X0 c6 j8 q9 @9 t$ K" M& o  {6 pset trade-record-current3 ?. u( n' X2 r2 E4 ^5 a" t
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 Z7 o9 ~! I2 f* Y% ]5 Z]
. \+ h. F9 y, W" f
3 l/ A) L$ g9 B) J
+ F1 p: D8 z) D* ^; E5 q4 V7 L
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! _' x  g- b4 w3 |, p) ^

( k' u4 ~" {1 ^set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 A) d' j" q. `+ I+ T;;
将此次交易的记录加入到customertrade-record-all
; K1 V& L0 l0 z4 n1 Gend/ y6 y2 x7 k' }, h" [0 k

5 z6 d" L$ j& H( U+ v! Oto update-local-reputation  f" P0 T5 o3 Z. s, }. O. H
set [trade-record-one-len] of myself length [trade-record-one] of myself
* x. g! t# e3 W4 X* U8 \- ^
% }* j" a! g; k) q8 e+ d( h; O, K0 F7 `
;;if [trade-record-one-len] of myself > 3
) m5 G8 ?6 Q" u% c
update-neighbor-total
2 T# U9 E7 b6 X6 v) G, y;;
更新邻居节点的数目,在此进行  U2 U3 ~, \8 E
let i 3$ z& H$ y- q% T3 D- h
let sum-time 0  e, W2 a( k# \% r% c4 `( f2 c
while[i < [trade-record-one-len] of myself]- S, F4 z) t# k# O* v! [
[# b# o% p4 y1 k+ p' o. X% T
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' c1 n( N- b! K7 c. Z, ?- k5 I2 j
set i
. L. I+ w1 g% B& Y( i + 1)
; G, d3 a2 ?6 i* A( w0 b
]
. O: N/ s" A/ S0 C3 i/ H  jlet j 35 }9 n( }" p+ Y4 \) n; F
let sum-money 08 z! W1 k* F! k6 w$ o3 Z
while[j < [trade-record-one-len] of myself]
) |' ^5 A8 C- T9 z0 X0 W+ p: }[
" v3 {6 r, K2 \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)
% S$ _4 z/ V0 t4 ]set j( x# j* j+ F" ~
( j + 1)
2 m6 i$ P; C- ~6 |
]. Y3 E- @0 [4 [9 K$ \7 x
let k 3; ?! h  U* x  g! t. W
let power 0
4 r+ [6 w/ e7 j$ Tlet local 06 N9 E; X; [# d7 A$ K
while [k <[trade-record-one-len] of myself]! O- {3 \1 k: {
[
' c+ Z4 F4 N1 A9 U$ E  e+ Kset 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)
; R; F3 o/ A& X- zset k (k + 1)
# F( N/ x% n, {" q0 ^/ ~0 ?]* K4 o$ S  o4 R  t7 A# K
set [local-reputation] of myself (local)
, Q' X' f# j) K: dend* l! ]2 w8 S2 }- I5 f( W4 T
& E- Q2 K+ h, e, i+ w
to update-neighbor-total- C$ v( d, g  ?( w0 ?0 {5 {
0 V% n" w9 v# K6 _$ b
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ P/ w, }1 V  I
0 E- c7 J: i6 d8 ]
3 v; |5 W* X$ Q0 |' F" s$ |: L9 \
end
1 Y# [. }  D/ U  k# W' Z1 d  a/ W/ }8 T% N8 ^6 e% ]
to update-credibility-ijl ; w# Q* f  C! s5 M2 b+ d- F4 Y

9 ]. q$ r, M" X;;
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。
5 M, O$ B$ A, U# O* plet l 0
$ w+ v8 z" T- Uwhile[ l < people ]
, Y/ H- ~8 i2 G( S# D7 V2 R+ m;;
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
$ M: H2 z+ {- |* Y$ n& v4 m5 \2 G[
0 c4 `  z+ a& e1 [. r0 m( R! \let trade-record-one-j-l-len length item l ([trade-record-all] of customer)  g" @  w! I. {: x- u4 J
if (trade-record-one-j-l-len > 3)+ {4 s* s- U6 m; |2 p& a2 s
[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  H7 I9 C1 {! k' Q) ^' L0 @
let i 33 n- a% \7 c! c. l4 j5 ]$ @/ @: G0 l1 ]3 K
let sum-time 00 q' F6 C: ^' V, I0 ]' X& P" u
while[i < trade-record-one-len]0 v/ g/ _* U6 S/ B4 p
[2 U9 ]" }: @2 b5 Z7 G1 E
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  N' @6 }' r. H% }# V/ S
set i8 h/ V: i$ b7 I0 H$ }
( i + 1)

, L& C/ k; b$ t9 s]
$ N0 l/ D1 M. ?% }let credibility-i-j-l 0
6 T! h9 ]+ N5 y/ r; N8 T;;i
评价(jjl的评价)
2 k0 p7 H  {* c! q$ Flet j 3/ G+ Z' ~  y. b. K
let k 4
! q, t. V. q$ D* gwhile[j < trade-record-one-len]- c1 p& O# s# z" M5 H7 c( W
[
- K, P9 I4 H$ ~6 {% r- h5 wwhile [((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0 U3 l3 ?- ]! F( G: d$ W% {1 t
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)
- t2 x( }1 j9 o2 Fset j
: [1 i+ _# K. E4 o4 m( j + 1)

$ o* f! a+ l1 M- X$ ?( p]
- u- A: l' H( _: _8 k/ r# G1 Uset [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 ))
9 s* g! p, G, `* \% _* u- S( E" F- w$ Y) Y! P. H) [

* ]1 i2 M3 k+ `let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. W+ ?3 C; u3 g8 X+ U* F;;
及时更新il的评价质量的评价
1 w( @7 K1 ^- L1 B1 f- ]  ^5 @, Bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; @# s* g( N3 j( ~set l (l + 1)* P6 D7 [; I. ^& }" K
]
) n8 }1 H7 b9 ~end/ v( l0 p. O, E# t: z# y

( Y2 s7 D7 [' ]9 R/ W* Wto update-credibility-list
4 }1 J% {4 f& w; ]let i 0
0 E. W' k; M# W/ ewhile[i < people]
+ E. t$ ~/ k3 f9 L5 M6 o5 ^3 @5 i[
  b: a, J* y3 Dlet j 09 d9 ]4 |7 f- z- `- d# K: l1 r
let note 00 B& }# i% R: c$ f
let k 06 p; E( h) P% k! b4 a
;;
计作出过评价的邻居节点的数目
3 v6 A9 f  d2 z: y+ Hwhile[j < people]
0 F& [+ a% U0 \; ^3 y* Q& p9 m[- `( C& [5 g9 Q$ u# |6 [6 x
if (item j( [credibility] of turtle (i + 1)) != -1)) V% z' x# v% m. R& \, ?* r
;;
判断是否给本turtle的评价质量做出过评价的节点
; v7 H4 x* v. Q! ~- C[set note (note + item j ([credibility]of turtle (i + 1)))1 K6 g! Y7 N. F/ Z9 E0 \" U
;;*(exp (-(people - 2)))/(people - 2))]

: w3 Z* o& E; b5 P8 f. oset k (k + 1)" N  \& J( ], X  z; A# D2 r
]
) g- v2 \; u5 f* U( sset j (j + 1)& o& _* x' k- \6 x
]
0 I$ E6 A; {1 n& k9 |+ Jset note (note *(exp (- (1 / k)))/ k)
( v- s" p2 c, E7 Y4 i: ^set credibility-list (replace-item i credibility-list note): {5 U4 ?8 j2 n5 l8 A3 b
set i (i + 1), a1 v+ g6 \2 J2 Y9 _
]! k6 T# i: N, v; E& B
end
2 @/ a+ K0 u  ]  S0 h* E4 y8 f7 C4 U* ?2 U* b- k
to update-global-reputation-list% t- d- ]7 o8 O' y7 s2 R' W
let j 0
" |0 m' V4 ]* U, t4 Jwhile[j < people]
3 V7 \/ m$ H/ _, H3 u5 ][
0 T" k+ v6 E0 |8 Mlet new 0& o9 X: j  J) w, [) a  A0 k
;;
暂存新的一个全局声誉
" A1 k$ Y5 |6 ?1 ylet i 0
7 z" s. f9 M) @) Q. V5 {let sum-money 0
4 G1 H6 u7 x" Xlet credibility-money 08 b3 y5 m" O& |' B) P' G
while [i < people]
) v7 y' S5 U( l9 l7 Y[) m+ L9 k: B0 U! d+ I  G! m7 Q( w
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 g" U2 Y0 ]$ ?6 L3 Q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 \+ w: g. Z( K
set i (i + 1)4 Y/ R; l" ?0 X! C: p' h: D
]
1 ]3 ?: l' G3 f3 D! r6 Alet k 0
8 S& l* o: {  q9 u# b) [let new1 0
  F5 T3 i+ b5 }6 s' s/ zwhile [k < people]
& L8 }) i2 a7 p2 V6 Y[. }( y! O9 T7 I4 a
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)) o5 f* D. ?% E- B' b2 T8 H
set k (k + 1)
" f7 ~7 C/ t' k( }$ v1 A$ R]
# G0 I2 e* `' e2 @  }. V2 Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) V1 L. R5 k' }3 V+ U  hset global-reputation-list (replace-item j global-reputation-list new)1 c4 E! Y* C4 Q8 o
set j (j + 1)6 W; I9 r1 A5 @& i. i0 j
]
8 @  `# L+ [7 iend7 y3 X- E' K) o* _

& U: j& h2 f- r/ u3 y4 T
) a, S  P" E, U8 c+ k9 T! [; f) ]& j) G5 s* ^. q9 n
to get-color6 R6 N1 c+ j. ]9 x
! I4 i9 \" F4 t5 F7 u
set color blue
0 x2 l  b% L6 B  a1 n  w; g
end2 T# K& p$ [2 h: `1 l0 \4 d0 L
  Z- ]+ H" \) ^+ }
to poll-class% u; h& w! ~! e; x5 m5 r! G
end3 M! Y7 z$ S5 |: ~9 j  ]; x: @

. W0 W7 }4 {/ y5 ?to setup-plot10 ?; b" l! ^" |" o+ J

* L2 J: M6 F9 ^% qset-current-plot "Trends-of-Local-reputation"
$ H  M1 _4 V% ?& D7 ~; H

# m! B' a6 c4 l) _; \1 ]$ x7 Dset-plot-x-range 0 xmax
: o* @8 L4 c; ~, t
" n+ m! F8 {' ~
set-plot-y-range 0.0 ymax

; l3 S. P" ]0 D5 E. M* t' oend: M% `  g3 }5 {3 S+ ]  H
: L4 g; o3 e( T% X+ q% e% B' X- K
to setup-plot27 w8 y1 ?) [8 i8 I" [
( L/ n' C7 B0 _& e/ U
set-current-plot "Trends-of-global-reputation"
4 T4 }: A3 Z! U7 w
5 X. `" W+ L! s4 Q7 S4 t
set-plot-x-range 0 xmax

) X( a2 f" ^  I+ ^8 D
1 R. [, C8 M$ xset-plot-y-range 0.0 ymax
4 q! C# a7 y9 Q' C, x7 F  L; P
end/ `. {( Q. P2 w1 N* {# }4 Z- ]

7 b& u% W3 ~! uto setup-plot30 I1 R* B/ C! j" e+ T/ K; @

1 A# u* W9 N3 T! S! Q' r3 aset-current-plot "Trends-of-credibility"

: Z+ M/ d( Q/ O, T7 u4 C# E2 w4 o- E
set-plot-x-range 0 xmax

6 T1 c; W4 l/ O+ V. `4 K7 D5 Y: |! {" _
set-plot-y-range 0.0 ymax

, S5 ~: Z% k+ U4 mend, p7 A5 j& g3 j8 a

' ?  K0 J7 U; q' }. Jto do-plots7 d  V" ~' |+ v, g, ]5 O
set-current-plot "Trends-of-Local-reputation". b7 L$ C1 N+ Z" O
set-current-plot-pen "Honest service"
$ o* E3 ?5 B6 X1 b7 Tend
& S5 N* L" r9 Z  j
. C( c$ j! r) Z" ^$ 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.
3 l: c1 [% S6 i
! h# U6 m, \; e8 `* _+ H( H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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