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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:. ?& V4 X6 f. k2 }; M
to do-business ' z. Q; u! @9 e% ?; e: l
rt random 360# Q  _6 ^4 {, i0 b. v4 p
fd 1: V& H" b3 u: E5 Z( L0 q- G- s
ifelse(other turtles-here != nobody)[
; y; a' _! p+ |   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.
$ P# k* J5 X: j3 i* p! g   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 w" _  K' Y% W9 `- k' H; p
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% z: t  y+ T" F6 m+ S   set [trade-record-one-len] of self length [trade-record-one] of self( X9 F$ I9 c4 z6 N1 |
   set trade-record-current( list (timer) (random money-upper-limit))8 a1 T/ _9 P( b& U2 Q2 G- w5 F
; u2 A" V* z, g; X$ }
问题的提示如下:
1 W; w/ d: B0 q+ h. J
8 F, i4 v; _% @7 H! n. }& Qerror while turtle 50 running OF in procedure DO-BUSINESS  |4 d8 {) i' c; D1 W6 r. W
  called by procedure GO1 G+ b6 z1 h/ W" L0 w9 X* D# h
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% h5 W) V7 P5 [$ L
(halted running of go)
  U, O  e4 k8 e$ x
1 q0 q& C" b% |" P1 a- r+ 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~~7 a+ C1 A1 }7 o, r' ^: T0 I$ T
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
: Z+ Q8 ^) }3 V+ Wglobals[
! P' N3 q6 A+ N+ {* v  Vxmax9 Q8 y# ?; Q# k
ymax. w! T/ \4 y6 ]& ~" T/ i1 i  {1 O0 r
global-reputation-list! }' B7 I1 }5 B: Y

9 ^( ]$ ?, r0 U/ h;;
每一个turtle的全局声誉都存在此LIST* F5 |' ?9 g* t9 J  W7 f1 _
credibility-list& @  v0 }3 }/ h' U1 U7 j" M' T2 z
;;
每一个turtle的评价可信度
" N* M# z, J& s! shonest-service4 p: u6 u' F. F$ X% e  D# G& V
unhonest-service, C7 O+ h0 ^/ ~
oscillation! e. |8 i4 {8 c/ M# }% ~4 A
rand-dynamic
& R' `1 \2 c1 J" n. f* S: B]
& Z% F& K2 A  ]5 M) Q/ R; A" o
turtles-own[
9 W2 z3 y  d  b6 l4 g4 g5 itrade-record-all% `* q: s% z8 Y/ {2 F
;;a list of lists,
trade-record-one组成# C/ ]# g5 T$ w" [' v7 z
trade-record-one: M8 ^. i6 i, ]7 T7 i
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录4 y, H# _3 l2 F, e+ |" w( F1 i

) e) V) Q' f$ s; f  _& G;;[
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]]/ |' Z; H, H& A! m, n3 Z& 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]
- ~+ T4 r, ?/ r. ccredibility-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/ j$ A9 k7 h5 W4 U# B9 _9 ~' y$ W: F
neighbor-total
0 [8 D' T# M5 ?1 G& i& }5 Z- W8 i;;
记录该turtle的邻居节点的数目
; |# L4 X/ p0 J+ [trade-time1 b3 O6 D/ Z2 J; q
;;
当前发生交易的turtle的交易时间
9 r/ P8 f0 T" }appraise-give
3 d+ g4 L. u8 B  _( t;;
当前发生交易时给出的评价
: \; G; t& i( A5 z$ fappraise-receive9 r" `) ~) D  H
;;
当前发生交易时收到的评价, V* o$ _2 T0 B, L# N, B
appraise-time
, {2 g- F7 j; ?2 L;;
当前发生交易时的评价时间+ z, n) m: {4 q$ r* @
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
% M9 \1 s" ], t" X) S$ t8 Xtrade-times-total& b7 R! ]! W5 G7 N$ D0 k' o! \& r) f  v
;;
与当前turtle的交易总次数) S9 r' z3 m( V" J8 T- R
trade-money-total
& _3 b2 J+ }' U* r3 j  z1 {1 f;;
与当前turtle的交易总金额
, E8 Y$ |6 P& J8 p. t( ilocal-reputation
$ E) K3 s& B7 v! `' M) |" eglobal-reputation
0 u5 {/ J3 M- G  j% W0 O# jcredibility
5 }' t) t* X  Y: A2 ];;
评价可信度,每次交易后都需要更新4 r  y/ t0 o/ w
credibility-all
# k1 A* Z+ s6 v$ |, O( Y;;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
: Y6 _4 z5 o" a4 J3 r: e* Q; N% I4 L& v: H  b! ^( _
;;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: T0 E6 g6 i9 i( N
credibility-one
2 \- g9 G6 ?" @- g. k+ ]+ y% V+ d;;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: W# W# {9 I2 y( `! ^# a
global-proportion. I/ @( s# U- \/ V* u
customer
( @& z' `; V7 C/ o6 v/ Ecustomer-no# `; R" h; M9 x
trust-ok
/ {& _) r9 z& ~5 P5 A$ G0 Vtrade-record-one-len;;trade-record-one的长度/ p; b) [1 h( p: T9 @( q1 Y. F' c
]4 L4 v' P) L! f+ x, \

2 X; Z; |5 o& c8 ?* g5 V$ p; T2 |;;setup procedure* f! Q/ o8 I0 g( }0 V# u

( G! M' Y4 N/ g' F6 sto setup
0 d4 v& E) H( y+ g( b1 Z" v( f. v- {/ c' j2 q* p
ca

2 V$ l  D. I% Y2 M$ E- h
* h6 Y8 v; M& a7 Iinitialize-settings

* T0 r; {5 c; |( s2 O3 r6 c. B# E2 ~. U& J* L5 ^4 p
crt people [setup-turtles]

( h; p# F9 I" \9 a& w& T2 C9 o8 `4 [5 V
; r- x% d2 a. Yreset-timer

8 f, Z& l/ B; _4 w/ y: M. t' [4 G( m: n* v* @5 V
poll-class

- ^; [5 M$ I- J4 k& b# o5 y4 `: ]& r, I5 C% e1 @$ G
setup-plots
) i+ T! p0 K( |0 e- q# e* F

5 W2 ^5 _$ ?7 E: K" Pdo-plots

% ^+ G4 A4 o! G6 Aend% P& j3 m1 L! U6 p
* D+ Q' a5 C" u
to initialize-settings5 G6 u% E, k/ \! O/ F" z) ?
* S' G) R+ `1 m$ R4 L# q
set global-reputation-list []

5 j! F# Z& N' a2 {, g1 T8 j1 o! ^! _, b7 O
set credibility-list n-values people [0.5]
* [4 G, N* z) m! t

& l( G# p# s, k, u; Uset honest-service 0
. z) v* Z) @7 A

+ Z6 W* j# Z& }' eset unhonest-service 0

" z; u  ]& e3 i0 v5 A, n: S) f. O3 J
set oscillation 0

4 C' T8 {3 d; i
: ^" N! w7 _% J) J7 @set rand-dynamic 0

. Q; F1 E9 ^7 k# ~7 ?* X( Hend5 @. `9 R# M( a- X/ e' _1 L: U$ O" }

+ Y( l9 P. H4 ]% ?: nto setup-turtles
7 A) L/ _9 `0 Y+ {0 Nset shape "person"3 ~) s; ~( W1 b' H
setxy random-xcor random-ycor6 B7 d! ^  N& b! {8 D  B
set trade-record-one []
, r- D/ E0 w+ m0 T
+ h9 k$ ^: G6 E9 }0 U
set trade-record-all n-values people [(list (? + 1) 0 0)]
4 |8 |  |- a, U8 h
( ~) E* m, }) `/ }3 |
set trade-record-current []! H4 m/ K$ @/ m8 F8 J
set credibility-receive []# g7 z  y3 S7 G7 }: F
set local-reputation 0.5
& m6 L* a" U' e3 m$ Fset neighbor-total 0
. _; B& ]; }" k. a; cset trade-times-total 0
1 U8 k7 |- S+ Y" N% t/ Aset trade-money-total 0
: G5 \' q' E+ l6 Bset customer nobody
8 A5 {" _" ^! q( t9 nset credibility-all n-values people [creat-credibility]" f& i% L* N4 J
set credibility n-values people [-1]* |: O6 L1 ]% o& v! n" w# |
get-color
; F, Q2 L; [0 k% P
$ C2 y( e1 A: T) U* j1 w
end
* |% T$ }  [' d# h! k# R1 I2 r; D- u$ y
to-report creat-credibility
0 D* {' d; A1 \' G5 g# _1 l0 r/ Qreport n-values people [0.5]
. q/ V' m2 p! X* S. B& w% u0 ?' aend7 r9 l) Q. P1 S* `* G: [" q/ m6 x

* d2 k% V; V( Vto setup-plots
( r: C" i+ l9 L" `. R+ D
+ {4 B1 S* z9 `' C* k9 G9 p2 ^set xmax 30

& E/ o& |' m8 v0 H# O- d+ D4 l* y* l5 ^2 t
set ymax 1.0

& {8 ~& h& Y% r) q. G
; \7 O" t6 B  G& T$ i: X9 b3 bclear-all-plots

" O2 b- a) a* w* {+ q! q
8 N4 C' j# [% u) F. Asetup-plot1

! J% [5 f" e8 q* g  k
: M/ x3 I0 _( p" `2 ]5 zsetup-plot2
& w3 W" ^0 K3 {! t& H2 |9 o
1 e+ z8 l6 }0 Z
setup-plot3
7 Q6 f" @1 N4 F+ ]- M
end, o9 R% i! u5 H  U$ s0 E9 ~  |, Q

6 C' i7 `! `( J! e! |;;run time procedures
9 O' G# B: {- i- i! A" ]
* }6 X& [& x% Fto go
: y" j( k, r% }" U5 `# q0 C- G9 v6 A( Y* O: _' Q: Y8 c
ask turtles [do-business]
: d, q6 G* q5 K# ?& S9 j
end
. ~' R9 u9 O3 u2 p
% h, j! P+ f7 r& U* a# s9 v8 Sto do-business 8 N9 P9 R: }* W' N/ r" {) n

+ O( @5 |9 ^2 K! Y! ]( R7 Z) N; b: j( N' B9 @
rt random 360
7 Q, {/ b3 p7 {3 u7 c- Y

: |) b, v# v* m0 K* _" z, A/ ?fd 1

: L' ~+ y' [2 a0 O  o- p/ Q" F1 r% ], D* K
ifelse(other turtles-here != nobody)[

7 R' O( h% k8 ^* C+ {# d/ i% @
1 y1 F- Z/ t+ ]set customer one-of other turtles-here

6 ~9 X7 G5 y% F3 v
7 X6 _- k$ I- c, B- L  w;; set [customer] of customer myself
4 [. K. P; c; n

, Z, j+ }5 `3 G: s( yset [trade-record-one] of self item (([who] of customer) - 1). V8 \/ t7 _$ p. o8 u$ v! @
[trade-record-all]of self" k( B3 Y7 ~3 q$ F
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 R3 X4 d: I) y/ o6 t% x, _4 _
8 g6 k% ~, k# @7 U, [. L
set [trade-record-one] of customer item (([who] of self) - 1)
0 P/ }4 d1 A+ I' I6 W' Q0 z[trade-record-all]of customer

& d; C/ h% s4 i5 M
- S! M  b7 W0 e' L( a2 i7 `9 wset [trade-record-one-len] of self length [trade-record-one] of self
7 l$ A* M  Q5 k# [

, Z# r/ [& {& n4 s8 k. A! w1 p5 j6 lset trade-record-current( list (timer) (random money-upper-limit))
9 e: H' j9 Q+ Y! O9 j/ {  N( K

: G% t$ h: t( I; ]) C% g8 {ask self [do-trust]$ Q5 |: N( `5 e+ \
;;
先求ij的信任度
9 E6 B! {  X# v/ _" ~: T, n* n- l- @& U4 J8 \7 L$ r
if ([trust-ok] of self)
! b2 m# q& Q8 c7 u# @;;
根据ij的信任度来决定是否与j进行交易[
9 w; N9 C0 `9 O- v9 _ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, N% u" O' a/ E0 o, v" K- Z

8 e7 K! A8 |6 Q4 O2 s! X7 ]7 p[
/ _" B. M9 H7 |. d+ D+ r
+ s! _; D% L1 k* W. f8 Q
do-trade
. [2 h1 _$ O3 ^5 Y2 ]0 I5 Y& s

* H: c/ R6 x6 Z- W. aupdate-credibility-ijl

3 h5 }, y; V( J7 P2 B4 h; Z
, J( A7 ]4 u* e9 |update-credibility-list
$ D& r0 Q5 V0 J) ?% s2 F; z& X- v

0 k$ _3 x( {2 F) I5 t& m3 R- o: ~. Q! X
update-global-reputation-list

& G: q2 i2 b) r2 X/ o' N4 @) y/ y( i4 s1 x( p7 e
poll-class
7 }5 Q# d! P* V/ z3 u7 p
2 n8 K( n$ c7 B6 ~1 }
get-color

: l  @( ]; C9 d  z! P' n! q( D: D3 s
]]
3 l& t6 p! l  a0 X( f: L1 K
9 h3 Q2 S8 u6 Z# v/ _;;
如果所得的信任度满足条件,则进行交易6 n( K- d& B# b' Z+ q9 P

) Y0 n, S" }0 M[
0 {3 W. y5 ?1 g$ }$ p4 p

1 O5 @( n6 ~" I/ L. N1 K) C# n0 xrt random 360
6 x! y( _% p2 P9 F0 b4 L2 x- o" V
3 I8 W$ ^( F7 I- j9 U8 u
fd 1
/ a1 P: o) e2 e' z5 @

9 E1 K' {3 N: C: q]

- O' ]+ h7 o- a1 @+ B+ a" v" C
8 @9 v- h$ x1 Z8 o- Xend
. m9 J9 l# @4 d9 i6 D( U
0 ]& @* W: A- n; U0 }) z8 l
to do-trust   {1 r: l: o6 \3 b# |2 j+ c
set trust-ok False
; h3 x& S2 ?5 U8 ~! K9 C  G7 z; s2 A3 B0 w3 f3 u
# [4 A. ~+ g' h0 ~7 S/ o
let max-trade-times 0( P9 [( i5 p7 J8 Q* G; K) p! c$ g
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) |9 A6 _* z8 Q( \
let max-trade-money 0& L5 _5 x7 q2 A& n4 u: i/ }- O
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 M6 Z4 g/ i( b& Q3 L3 T( i
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 h7 D4 x* [' a4 f/ a, ^: B+ y

+ [) p9 q+ o/ ^  t: _4 M0 O
9 v/ m2 Q( b7 `: l' l# o- t9 s
get-global-proportion
* x9 ?$ N7 ?4 v# Glet trust-value( `9 }7 O8 A+ w) a  i# s
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)
$ H. P. q! B& |" b  {0 K; g
if(trust-value > trade-trust-value)
9 d. q- O2 j3 a[set trust-ok true]9 m+ H8 b& T9 W4 q: m2 j( E
end
. k/ Y$ ]% ^2 C; u; _# g" v2 D+ ^# q, E
to get-global-proportion
; ?" V. m: N) d3 R$ Y0 r. Y9 a& ?ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 W# X3 q% K- g4 T[set global-proportion 0]4 y2 m& q# D! M7 {7 x
[let i 0
7 N4 i. U% J* x7 E; o8 L/ ylet sum-money 0
5 g1 V/ D# N# Pwhile[ i < people]
' N0 `9 B1 B/ g: k[
) [/ \! [/ b2 ^2 dif( length (item i
% u; V$ `3 L' S1 }0 O, J7 l[trade-record-all] of customer) > 3 )
, F; L9 e& ?3 ~4 `3 k, f9 I' x! ]
[! C/ p- {! T% `% w
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# L; |3 R+ `: A/ j- t
]
4 N" {& o4 z' G# w6 H]9 ~* i6 [5 |# l
let j 0
3 O: w% v) T1 m0 g/ `$ Llet note 0
" i5 G3 u$ U; q) n4 x/ V1 s  O( dwhile[ j < people]
* x4 s. S( n$ |7 Z+ E4 ][& B  @( V, C4 P3 E5 {) A3 d8 @
if( length (item i
( J0 y# f1 O: k$ \: x! `9 l[trade-record-all] of customer) > 3 )
1 ]+ W" Z% `+ @$ g8 D
[
( A( q0 `& d  O; N$ aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: ?$ q% J0 R2 k; U- H! H[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! d. }1 S7 O1 J- O# Q& E
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' J$ L, [0 O' L4 [! z; H9 ^4 g
]
" A9 G0 A$ y4 [5 c3 Y, a3 h]5 n$ ~9 K' @% c' l  t
set global-proportion note
% ^4 w3 Y1 t& ]7 ^- f], c7 N- v9 E+ B
end3 \- B2 ?  Z- t+ }# a
" S: m+ ^) |4 w( {/ G5 X
to do-trade
2 a( H) K; Z0 t( j;;
这个过程实际上是给双方作出评价的过程- u+ B( w# \" s$ V' L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: Q" h/ k& \# p2 `% ]2 s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 Q$ `* @. U6 @& D, W
set trade-record-current lput(timer) trade-record-current6 D0 h& X# R, v4 l4 W9 p
;;
评价时间
- B+ {) u( S# S7 C/ c$ cask myself [
+ w( ^& s/ |9 C, oupdate-local-reputation
2 W# q, U- Q* w# N& ?4 C; dset trade-record-current lput([local-reputation] of myself) trade-record-current: Z& @3 H* l" e/ j/ v
]
9 U* \$ v6 z( {' v4 ^set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 U) D% z/ ?( ?0 e" C;;
将此次交易的记录加入到trade-record-one
% ?4 I7 u! `: L8 i9 p: Yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; k  [- ~5 S* P1 c; X# blet note (item 2 trade-record-current )- U- A; o2 h- j
set trade-record-current0 h* d8 a6 B5 ?* }4 ?
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 A$ U: @$ d6 k5 u( j* |. g) p0 m1 y
set trade-record-current2 _! [" E( I. S0 e% |( w& _1 a
(replace-item 3 trade-record-current note)
& u5 m0 E3 B. i$ t7 X# e( U+ f' e1 n

6 g( t* r( J) A4 B# F1 C! ^$ nask customer [: v# R" i1 p4 m3 ^* @; E
update-local-reputation
" A2 @% j- W" I6 gset trade-record-current
( G+ u: g- m# y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 a. Y! p2 ~2 O. t
]# S4 w3 P/ o# t0 B! I( n

/ w' i( V2 n  E0 e8 S, R- V

7 q# P" T! H- a* |! E: S1 Z6 hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. l' V% ?- U0 s' b4 E9 s6 g
, y9 U! _" _, E( [( |
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 O& J; r! b% \, {* O' [
;;
将此次交易的记录加入到customertrade-record-all
7 k$ G8 r% F, xend
& @4 g; n& O1 x6 N5 t( L/ G9 ^$ ]
+ @" L2 @% A" f& V) M& r9 t: Oto update-local-reputation
6 T0 Y' a# I" ?/ N( B* m) k( R9 U" eset [trade-record-one-len] of myself length [trade-record-one] of myself! t. u( U; k3 s
- B8 r, X( T2 v7 t
8 {) R# o( V+ q' A' W
;;if [trade-record-one-len] of myself > 3

" l/ q& m6 P; W, y: \: }$ ?1 bupdate-neighbor-total
5 O( d. W/ K- l. E3 F;;
更新邻居节点的数目,在此进行) A! m8 u+ C5 Y% J* A+ I* K
let i 3
3 q" z7 c% w, [let sum-time 07 t9 u- s* ^& B0 k
while[i < [trade-record-one-len] of myself]
, r" E/ G5 t% z  u0 _8 X6 ?2 R4 n[) t- k- g3 r9 o. {4 c
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ H/ y1 r$ d- L1 l
set i
" v. X5 \* e$ a- Q8 w( i + 1)

1 O1 t) r* ~) i+ A5 _, ]+ B, S& B]& w3 p* _  _- _# n
let j 3
; T. ]' F4 [+ I6 n) V' y" a* i& }let sum-money 07 l2 y) n# v! a
while[j < [trade-record-one-len] of myself]
6 O5 ^- a  O2 g: G( e[
9 I6 q  P+ @; L; X, uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
* T& x' v" }% d3 ], m8 V' B5 jset j
% L% n) S$ N. s3 A6 O' x: n( j + 1)

* S- _7 `5 l/ R1 ?& l0 I8 q) T- a]
: r7 j9 l! n% Z+ b& _+ S* wlet k 3* |0 U' e# p1 Y- D! Q
let power 0
! j, T  i" f8 klet local 0
  D' a& @& N6 p& a2 G; w1 w- Hwhile [k <[trade-record-one-len] of myself]/ K' L6 {3 M$ f& K4 }& C5 K
[
- s; M( M% d! C( [. cset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) 4 I' y# a1 B( d+ s: Z: W
set k (k + 1)
/ Z2 Y! S: _8 N& u' }0 [" ]]
' R0 i* h' t3 n3 j" W6 q% u7 qset [local-reputation] of myself (local)
' w' {/ i5 Q4 ?! Gend  H$ B( o5 @/ M1 s) q& V. n/ o

( ^' I' V4 M( U* V7 D# n. `to update-neighbor-total1 Y3 ]* d5 n9 X, v& w! N

3 [$ s6 S2 V! k% Rif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 d" y, z) v" _
1 a4 i7 U5 g1 \7 M
. k" y" f  g! m% B$ `) I% F
end
# c! }8 J2 }& o) v9 ^& F- @/ n
, ?5 w* x% _; Yto update-credibility-ijl
3 A9 b% |' L- s" E4 i
' B' F* H; x% _. C; I/ 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。
. r- U  }, L6 L3 X  U4 Klet l 0
3 l4 g3 ]% ^; ]. Nwhile[ l < people ]* O. v0 N) B9 ]) I- t; 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
# _: c4 ^! T9 G/ V& V1 j; b[$ Z: ]8 m# X+ B/ h  `2 u* P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 z& `8 k7 o( S9 J8 m; h
if (trade-record-one-j-l-len > 3)
  @* n) V4 ^( p+ F; z* v% c[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" G8 m/ ^5 g7 V
let i 36 `* T8 y) [( m5 m/ R. i- t/ K" l
let sum-time 0& E. G6 t: C" `( ?6 R
while[i < trade-record-one-len]
8 F! B: ?- z; `5 U1 \* ^[
; V; \; I' A. U9 m$ h7 |, jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 t+ i0 b5 G4 @
set i5 a5 i2 x7 \$ k: E* P) F
( i + 1)

* Q) L' |- i2 b1 Y8 ?/ z]* b- C  Y( q: ], f6 _9 F" M: _
let credibility-i-j-l 0$ W  E( Q: p8 U
;;i
评价(jjl的评价)
  C) A3 P! q$ W' i' olet j 3/ {8 i$ A+ x" K  Z
let k 41 j8 E9 `; _( e# S, ^& v# @
while[j < trade-record-one-len]/ b- X9 ?4 o% N! L9 o. E0 d
[
; q7 A) ]1 V2 o: 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
8 u1 U0 s% k8 ]( Nset 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)
% X1 m/ z: T2 r9 g* L0 Sset j0 s$ C4 c  h  L2 ?9 k( r
( j + 1)
% a& a- x7 i) q) G1 K( z. w6 e
]
- U5 X5 {* P# V! W# x. T7 s# ?set [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 ))+ L, R/ [% W4 O6 r( m; a& Q

& v( l: N0 A! S' N; v/ m
* x3 K# P4 M6 U+ j+ N
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! q" J, A$ t8 x) {. e
;;
及时更新il的评价质量的评价
7 o, s3 Y8 Q4 Z: cset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, Z$ R: |1 J: G; B" O0 x% hset l (l + 1)
& x$ j3 d, k4 F* C]
5 n9 j" w' p( h$ m4 s: eend
) [+ v/ l5 R% U9 f' u+ S7 q+ Z% [# `* N
to update-credibility-list
: D# i/ [' P1 ^4 {: Vlet i 0  H; r' f' P/ V
while[i < people]
: R2 c7 q8 W8 P# K[
, P5 q2 r9 @) v9 @1 F" J! h, tlet j 0! e4 u+ j% \! R- i, Q& H
let note 0$ y: w! B- @7 g1 J9 I" F) G
let k 0. o& A. R& W3 W
;;
计作出过评价的邻居节点的数目
/ y5 ]) O' O! p+ W* t3 O& owhile[j < people]* V9 q9 N6 N& f1 I& S
[
* ]: o! S2 G$ N9 M8 hif (item j( [credibility] of turtle (i + 1)) != -1)
9 A3 e9 a' O4 a1 U;;
判断是否给本turtle的评价质量做出过评价的节点
0 o* L0 @+ p- P[set note (note + item j ([credibility]of turtle (i + 1))): l- R3 b  K% z
;;*(exp (-(people - 2)))/(people - 2))]
; v1 I4 x! L! @4 j/ S/ X0 G
set k (k + 1)
# N* z0 k7 v2 k9 k5 Q- ?]9 G+ [6 i4 n6 j1 j# ]) R: e# x
set j (j + 1)
8 P3 }2 X! S3 e4 l]6 K0 k* v' T5 R0 D& J* T
set note (note *(exp (- (1 / k)))/ k)
$ m( Z' c: B/ Z/ H4 C/ Yset credibility-list (replace-item i credibility-list note)2 z2 o- G8 Y2 }' _" }8 ^
set i (i + 1)$ D9 |* E9 `+ ^
]. J- g0 {8 V& K  W( ^
end0 `9 P. c* o: a2 u  N7 j

% s6 A4 h1 K2 S! u; V/ i: H2 Y1 Mto update-global-reputation-list
! S6 F9 D% o* F6 G3 ]* dlet j 0
6 W9 ^! Y' E- ?4 k* I! u! Jwhile[j < people]
5 X: _  Z3 H0 i) S9 N) N4 i[
* _6 \% x$ i0 U  X, mlet new 0
2 X' B' u$ Z5 O! d8 Z;;
暂存新的一个全局声誉
. B$ ^+ i  N3 p+ @2 D4 flet i 0
/ t/ A5 n/ Y; C( ]8 j( C" u5 flet sum-money 0
( X( A% j. N8 e3 llet credibility-money 04 ~' z3 y) h1 p0 ~: J+ [6 B/ O6 v
while [i < people]! ?# g* C7 t6 D. U7 a! j
[/ R% L9 P  h8 e7 b7 n' G- c0 H. `
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% p! s5 N, y4 z( Iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ Z, R0 x( \' G9 g4 gset i (i + 1)" y, R7 a$ M* L, O. T$ N
]0 {' u. U1 }/ b
let k 0
6 y8 G. W" @& l& ]+ o: }let new1 0) I9 Y7 W" r, h1 I
while [k < people]- C) K7 e$ T5 r; a. `) c: \
[" W1 v) Q$ Q  W( ]5 ^" b; L
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
; j5 S8 Z8 m: V2 |' ?set k (k + 1)
* j( r( C3 }& j2 f9 `' F2 R]) R3 w% y! I2 ^' D9 B( W9 @1 V( q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , V2 M  l/ ?& K2 h% [7 `# D! P
set global-reputation-list (replace-item j global-reputation-list new)
9 d7 L0 C' {+ v: Sset j (j + 1)
  I- ^8 |/ V6 G4 ^" Q]
3 D& w  q, e* Lend9 h* K  \; t7 K" S- U- F& n: `1 G

3 u% f4 d" M! W: x. u) c
; v. v. L5 ?4 Z; s6 o
- O3 A, G2 y0 I+ M& Yto get-color/ ?! R+ b3 y. O3 a) g" m

. X. G- o$ q  [5 D/ K* Z- Lset color blue

9 [" U# V$ @& X& cend2 t) m7 w. s  G( f5 y# b
! o9 T: ?- D* p1 t+ a  g# ]
to poll-class
+ ]5 v* o/ Q  W% dend
3 d1 h$ u6 C0 ]/ M
' E$ K3 x5 m' ]3 |( Jto setup-plot1
2 w' [5 q# X/ p( o/ f5 B+ y- }9 V$ c( J- C
set-current-plot "Trends-of-Local-reputation"
4 R" t& d+ Q% @, V: z( p) }
) V  E6 R) J! I, ?& Z/ b
set-plot-x-range 0 xmax

; X5 S3 N' Y- k6 k9 Q) I% }" {+ p. ?4 y- M2 f. q
set-plot-y-range 0.0 ymax
5 Y) h- v. f7 O1 c
end, L* v3 Z0 n4 K+ d  v1 E

3 t7 X! N( I1 ]! @& N$ Bto setup-plot2
$ q7 v* U6 k+ o3 o0 \& @/ Q/ Z% q& c( g' X% d- N
set-current-plot "Trends-of-global-reputation"

! {, t# p, Q, |5 G% }, t. |% U& v4 h. N$ ~8 `5 g
set-plot-x-range 0 xmax

* O+ s4 K) w* s: A
! u% q5 R$ @& S4 h0 k6 \; Eset-plot-y-range 0.0 ymax
, @( L# h( o* M! {# O5 e
end
/ f& W. M% Y- _! T" c$ X9 |( A, Z$ a6 R; ]. ]- m$ O% f
to setup-plot3
: H' G$ O" J% K1 G. B, f+ L/ j' t8 D- k$ I( d& r
set-current-plot "Trends-of-credibility"
+ j0 y% S# N, Z& m% W/ [
& e3 z$ M2 B0 X( O+ q7 q  B
set-plot-x-range 0 xmax

/ Q; X: V$ L- o* P% Y* o
# s: a% F$ q5 I* C. J2 _set-plot-y-range 0.0 ymax
- {3 h0 t; x8 g% u% s
end, o  Q1 u0 G" g! F/ u, o
' m6 l7 J2 p5 c7 \! k
to do-plots
; Y# d/ ]/ u/ X8 C- [1 t$ u8 p* eset-current-plot "Trends-of-Local-reputation"  U3 ]% P1 X' x: e( j
set-current-plot-pen "Honest service"
6 T4 A  v- m) E$ t  J0 yend
- N: D2 w( y9 H, g; ^+ b% Z+ V# h; A
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

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

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.) @  ~8 f- i& S* s; r& J

, R' p2 A% A1 E& Q: G/ {$ f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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