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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:4 N. K$ @! E" Z  M/ F
to do-business ; I9 L5 |! ~8 e9 l6 n
rt random 360. b9 f- k! _+ W, I
fd 15 q$ K) @) ^, w% |
ifelse(other turtles-here != nobody)[
( z% j! A) w- t1 E# v+ R) o   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.
8 g/ z" q" Y$ `% F* S( j- S   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% e$ S4 M" i1 b% a5 m" m$ ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- I$ \- m' Z0 l% y5 M2 Q* k5 p9 C7 E
   set [trade-record-one-len] of self length [trade-record-one] of self
4 O# r  F/ r# G8 V   set trade-record-current( list (timer) (random money-upper-limit)): f" X2 C  G4 N' L; t5 d+ l
- b- t) {9 D9 e1 w$ x$ s
问题的提示如下:
- r9 f3 u/ s* M4 d* V* B3 m, W, p( i' Q. T8 o# x
error while turtle 50 running OF in procedure DO-BUSINESS
4 R5 a+ R5 y8 z  called by procedure GO
. T/ r0 t; B( mOF expected input to be a turtle agentset or turtle but got NOBODY instead.- n- j  `) @9 o4 O$ C, S& N0 x
(halted running of go)
0 q, C8 D) k/ m) C+ \" ~5 W( S' m' W$ w8 f/ g7 y
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~~! j; U: l* s7 k0 K& E
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
7 N% @5 \. S" c4 I% s' ]! o: n4 Yglobals[. Z+ J: m6 t4 I
xmax
, E$ T- q4 ~0 E4 K4 X, q4 Fymax. n6 o4 P# _+ ^: f. L1 r" a( ]) [5 W
global-reputation-list
; v0 [! S# D) s( k1 Y
, ]/ B( z' I& o$ }% g1 l  J;;
每一个turtle的全局声誉都存在此LIST7 }. V1 f) I2 l0 Q
credibility-list3 _) u- o1 q" K- U3 B& S
;;
每一个turtle的评价可信度, @/ [. K. L* u0 [. p+ K0 f! h
honest-service
0 l* b# z1 X0 cunhonest-service& Z  Y/ x5 [: W! D: @0 n9 S0 w
oscillation
3 k# J& T3 k+ `/ q, o; crand-dynamic( S+ V) g: t% Q( h  D
]1 n: H* |" u; s( F' H& [0 G; Q

+ _" w/ A# y! p. v5 I3 mturtles-own[
& G- e( F5 B; }* G0 H* Rtrade-record-all
$ d3 o- D. h# j, d) z;;a list of lists,
trade-record-one组成4 _( K+ A8 l$ ~# S& o7 h0 i! I
trade-record-one
: Z1 U) L7 w: J1 A8 r;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 r8 j& K9 z5 H+ ~/ o
. \: _0 c, e2 u! L& P' j
;;[
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]]$ I1 v& M5 m& s0 {
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]# ~" `- q4 O- ?0 ]% b( m) I# [
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list5 P' ?0 W' o$ y; a
neighbor-total
! J7 X# A, y  q/ T;;
记录该turtle的邻居节点的数目" F+ s3 z- S7 M* [& X
trade-time
+ M0 o. C  Z5 e( B3 y' I. @;;
当前发生交易的turtle的交易时间
& c) m4 Y1 @/ o7 Jappraise-give. H# S! C% F  t& ~% Q5 q' ~# h  e
;;
当前发生交易时给出的评价
2 F3 y& L7 r( I# f; t' A  c$ Bappraise-receive& a) n( P2 q! I& l
;;
当前发生交易时收到的评价
6 _, L# _# a, K8 f2 jappraise-time
8 v$ ^6 H% Z8 j6 u8 N# [;;
当前发生交易时的评价时间
. {5 ^9 g( N$ G( R* l7 Qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 y4 _2 L% e5 v9 a: \+ ~3 Dtrade-times-total
( Y6 s; A, X) c& O. O;;
与当前turtle的交易总次数
8 E; V' T% S+ r0 O5 ~! Xtrade-money-total
# g) S3 d1 N" b5 }4 U5 i; t;;
与当前turtle的交易总金额' X7 ?3 }# a: J# C
local-reputation+ |: @9 o3 G6 V4 i9 y# n
global-reputation; s: Q) p2 B$ [: w' A
credibility
+ Y% T6 |: D& K0 \;;
评价可信度,每次交易后都需要更新
  P2 |2 ]1 l* Q# @' r6 Scredibility-all, n0 x- S/ }9 M% d
;;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
* F& ]) ?  Y4 _/ y. Y
/ H6 q6 o( Q8 {0 ~9 D; o;;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
; ?, i( [/ T# \6 n& T: Gcredibility-one
4 ?1 v' ^  p2 a4 |% Y;;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
( T; o- q3 Y* ]5 d7 `$ g, P: [global-proportion
9 }8 j: Q3 |- L) D" b2 |3 v6 Ucustomer
8 c4 x) L. |1 ~1 h. Tcustomer-no& u. Z4 i9 E: e/ _
trust-ok6 H$ }( e/ R  w3 B; i$ T
trade-record-one-len;;trade-record-one的长度, {4 ?% S9 L0 p2 h' a
]
% R/ j% ^" n/ ]0 c1 f5 f# S6 t
5 ~6 G  T8 R/ ^% [8 j;;setup procedure
5 f2 u7 Y/ N& f7 E; b" q- N3 ^
) x( x( M; j" T" u/ Dto setup% k/ }: b7 v% \% O

1 \) h4 g0 V* L2 c% f( ica

+ B: n% ^: H8 h# I# `  M  R; r1 N+ \5 j6 ?( s, v8 l: T
initialize-settings

' v2 i( D) o& q, {
2 ?& B( L: |8 q# T2 D$ O2 Dcrt people [setup-turtles]

0 }9 |+ d$ D6 x% ^5 I' V8 P9 ^: R( h5 @# ^0 D# p
reset-timer

3 f6 w) l/ F5 z$ u0 T: m4 B9 k" Z5 r4 e; V( M1 ~% b, t
poll-class

" u& S) h- y4 z3 v7 D/ R6 B) E4 |2 u$ {% @0 A' i/ f
setup-plots
, x9 S5 R% g- \! Q/ V. c( @' j% i

" n5 s4 f3 ]- o& O6 \- n6 {do-plots

9 R( X# c3 T% X! v1 K7 G  lend) ~7 j/ E; d/ J7 S

) I- T5 ^) c8 h7 G; G! x* ito initialize-settings5 ]: |/ _6 k2 L, n  [

- l, F' O! Q3 i& Z4 _! jset global-reputation-list []
$ C0 D0 c' a$ `* D0 b) k: y

* K) S# A: s- cset credibility-list n-values people [0.5]

. X+ U# }* }0 }* K( u8 ^5 z! |7 @, O9 D" h" }7 ]
set honest-service 0
/ f0 ^: \' `" F8 u9 v0 q
. M2 B& c/ Y# T7 Q  n: e& w/ h6 U
set unhonest-service 0
. ^, m" U" c% z
' p: C6 P/ L0 h8 i! m9 H+ z
set oscillation 0
4 Q4 m0 u( _5 f  W$ ]% h6 W  S

  P0 ?! s* ^7 w4 W4 S9 V9 [set rand-dynamic 0
* z$ }0 z5 `( F
end
* p( M7 t& S9 q/ B
. X* W6 X0 M0 G% l& c8 Q% z. Cto setup-turtles % h7 R. c# g/ Y# `
set shape "person"
* d! C, t' R0 L+ Psetxy random-xcor random-ycor
0 G; a" r) c( Fset trade-record-one []$ \- n! q5 O9 Q; e7 u4 q" d
) {$ C/ T; h& e) z8 k1 O4 x4 V
set trade-record-all n-values people [(list (? + 1) 0 0)] , l+ c$ b2 y% T/ X  M! ^7 C) T

; v" o0 Z! R- E% u. [3 dset trade-record-current []
7 v5 J) `, d7 u; G& H: Iset credibility-receive []; F6 P% `/ m, K" H9 v3 H) g6 l
set local-reputation 0.54 a7 A9 G( N7 P9 p% w0 E
set neighbor-total 0
, m( j, ]: t% R6 |' x# [/ @set trade-times-total 0
7 v" t. B/ d/ T, M0 zset trade-money-total 0
5 I7 Q9 Q( x+ ^0 h3 Mset customer nobody3 f7 D$ ~5 D; W. {+ V
set credibility-all n-values people [creat-credibility]
, I! n4 q* D; kset credibility n-values people [-1]! D7 _0 L' `. G1 Q" R
get-color$ X/ P" Y! H7 [7 d6 z" u$ Z

! Y& h/ e, u# y+ w% ~( Kend
( j& D/ k3 u8 m- `
/ ]' R; P5 t/ A+ v& D- N6 Pto-report creat-credibility  h3 d* C& z1 D3 N* ?" P2 ^) w+ v( \
report n-values people [0.5]
5 }4 a" p. H' T( r# B9 j/ |end0 f* k4 J9 J' I
7 e$ H2 G8 j7 y- t& C; Z  S
to setup-plots
8 P' H* X% |# N  r
% S5 e- o  e7 w% B* L/ ?% oset xmax 30

* W; j' m% R' i, j! b" |; v3 j
" l$ p) E  p& |" ?3 Kset ymax 1.0
# y$ k4 H! d# F  g& q! G

& D8 I" T' p- ?5 c# f& wclear-all-plots

# J! R3 f* F# L" j
& a$ a* M( e* s/ asetup-plot1

" W2 k' _/ r) Z/ f$ i0 b6 b1 l3 k1 A0 }; O! g2 l0 v- A6 n0 ?, t
setup-plot2

0 [  O, }/ z7 S8 T, r: [/ A8 K' X- i
6 `9 }7 U8 B6 H- Rsetup-plot3

8 W; y; i$ ^" W& W& dend
) |" v- t0 r* _- Z! R- k( Y( Z; O1 @0 A$ K$ C$ p$ }4 K1 ?% U4 I
;;run time procedures
* p3 c1 m2 N! ~* U
# s4 h% `$ E2 s6 }- K6 l1 @- sto go
4 o- B1 C- Q7 A2 T: z# |4 H8 ^
8 J& Z. }+ Z+ w  O0 kask turtles [do-business]
% D7 Y  m1 Y3 G  B  ]
end+ J5 @4 `5 R8 L
+ S8 J/ F1 Q6 e& H
to do-business 7 o- O5 V' L' N, n; l( V. w
, C$ f( q, q* k8 o& P

  q. i2 I$ F2 t7 D7 mrt random 360
* U0 N+ F$ T& i3 S
5 C( L. K# F3 o  r) B
fd 1
- J# Z/ c$ b8 {# m( t  E8 m" [
( F5 q0 A/ h5 g2 R
ifelse(other turtles-here != nobody)[

# j8 T6 ?/ {1 T5 Y! F: S/ f
+ f  z( O4 Y9 d2 c) O! H, o4 u8 O5 M" Eset customer one-of other turtles-here
$ L' r; K0 a$ b6 w& P$ u* u

% r( j( S8 ~) L8 W  u8 m;; set [customer] of customer myself

& t3 i7 {, q& M" n5 n: z3 Z0 F4 [( M" K( b) u' K/ H* S; O
set [trade-record-one] of self item (([who] of customer) - 1)3 D$ m, R! g' B' }/ E& l
[trade-record-all]of self
+ U  B  [* a3 Q" D" W$ v# n;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 ^$ e- ~0 z# ~" n) |
5 Y% ]6 Q6 N4 D8 Iset [trade-record-one] of customer item (([who] of self) - 1)
% x) h# A' u( M) m: _[trade-record-all]of customer

3 b9 b& D# M0 i1 Y2 H# @& S: |" l5 G3 e" }$ r# N. k
set [trade-record-one-len] of self length [trade-record-one] of self

, i% z) U- c" V0 @, ]# e8 T( _1 F/ j
set trade-record-current( list (timer) (random money-upper-limit))

5 U% w2 |& V$ ]3 n- {  [( D- e# a. Y, T) a) I0 f- u3 B0 R
ask self [do-trust]: R7 R0 m7 C* ~9 l
;;
先求ij的信任度  u( f4 u4 N6 \( V) d, K1 r  p
; {" T# m" E) s+ y' ^4 r# H
if ([trust-ok] of self)
- Y! m5 ]5 [4 I) R;;
根据ij的信任度来决定是否与j进行交易[
9 J8 R3 X+ r3 W  Y- O$ G* Iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* `) C' P! |$ c8 d: d7 b( f' k4 \
/ F  c  X0 Y0 Z$ j[
: Q5 p% ]' f3 Q& h0 l$ M, o
" G) f  l: G. J) r( a
do-trade
  g5 Z$ O# K9 s- m
( `. N4 a, I1 R8 f. ^6 l
update-credibility-ijl

# a. H6 B4 f9 D9 \! `
' D* r6 b; O2 H2 dupdate-credibility-list
# N3 _* ?2 Y. E  d8 T
  \- z, b7 a2 X
0 }. a$ P( }6 N6 n: P8 f+ G
update-global-reputation-list

" w* K# c3 c  s; b( W# W# O& i& @! Z0 N: n
poll-class
( y: u+ ]  K3 s2 [# }. _

1 J& ]) l  y9 G& u% q% P' ?* _get-color

# V, y, H5 m4 ]7 p  O" H8 |& B4 M+ |8 ~
]], [9 L& s4 j, f( t/ g1 v

. z  x" J+ ?$ M;;
如果所得的信任度满足条件,则进行交易
/ O( g3 K! {) W  a  S1 z1 \% L6 L7 O4 ~3 E- q7 E. E; N3 }
[
- V5 D& j! N5 W' b0 o( B
- b- S2 I; n2 }3 w2 _3 ^
rt random 360
1 i" k8 x, L  y. ~5 W

- ^0 o; i' b* p) ]$ a$ ffd 1
* [  h( U9 w) {5 a

: \9 ?: Q) ~* Q- l]

: U) J. U/ p; E) N2 q6 ?  \5 q2 U& R3 N6 f( q/ K& z
end

! ~1 X# E- N: [- |% A8 V& J6 Z/ \/ o3 p2 @3 H
to do-trust
/ i  }) p: v) i' xset trust-ok False- R4 I+ R1 |( w. R

+ N* f* }9 U" R0 X; x8 B# _

4 ?- u  t: t& E9 Y# j% m4 A( flet max-trade-times 0; C/ @: ~+ _: N+ P
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 A" a6 e- D3 g) W: y" \; nlet max-trade-money 0
$ V1 x/ @! l3 v/ n" g/ lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# d/ h& ^+ W0 i; O- y4 @1 P0 G, 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))
5 H* x7 |: u' ?9 }" p- H9 M
( n6 u- @+ U+ k" Z- d- W
6 x  F& R/ c2 z; n7 p: I- u
get-global-proportion0 B( M1 [5 I) W
let trust-value% }3 _4 v7 l& t: ]3 _
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) ?& g2 v* i7 n
if(trust-value > trade-trust-value)
1 j; X4 e5 [) w' X8 `[set trust-ok true]0 M, Z% a7 A2 ~/ I: B8 E& s
end% _8 @( s) D0 [+ p
% ]. j( i& U7 p* @; a* F7 w
to get-global-proportion! d4 p, P0 {. D" [! x' u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)' _  z) r$ }) H1 j" ^
[set global-proportion 0]
1 a% |; U3 \& V[let i 0( M6 D/ }& c3 ?! N0 G- k4 j$ ?  ~
let sum-money 0
9 T: o7 s$ b7 l" L4 vwhile[ i < people]0 t% q) o* A9 h$ {9 O' ]5 ^8 O: e
[
& N0 T' I* A) E8 r  Zif( length (item i
6 }: v3 J; i1 m: j3 x: }[trade-record-all] of customer) > 3 )

: k4 h3 t- `& b[; @2 l7 R8 \$ s" J1 z& h; f% I
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) S" X/ E' a: Z4 ?+ T; `! P
]
. ^4 m0 t2 @/ u1 H) U]
2 @1 w2 [$ Q, t$ h, m' J$ u8 e( \let j 07 j, G( r4 F$ L& F$ T1 ^( t
let note 0
% V* S. M0 r  Ywhile[ j < people]* [; b3 P! b7 ]; a+ O
[8 Y  f4 n$ D! j' ^" _
if( length (item i, g" h/ O, a# G. E! h/ N! S
[trade-record-all] of customer) > 3 )
. A: v! _. c, o. V# m$ v, z0 ]5 Q
[5 b: D0 m) C1 y7 F& }7 \8 s
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 d6 ^% |  s- h1 b" X[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' l0 n& B- q0 u- X2 x[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) G2 @( r7 j! D5 r0 ?( g5 [  ?]
; L/ ~  @6 p. P0 C) x1 Y]
& k* Y1 o8 Z: ?: n0 n2 q# n' vset global-proportion note8 Y/ \- e. E8 f
]1 U$ f6 A8 Z+ I
end
$ n. H% j+ j  E
! r4 C* a" i0 T$ i; g) X  fto do-trade
1 ^7 _3 T) R- R# p. f;;
这个过程实际上是给双方作出评价的过程+ k# S, C* T+ z/ H! d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 s: x8 i: i$ x- P0 o; H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* a3 c0 |; ?- l0 N9 y) pset trade-record-current lput(timer) trade-record-current
  F8 T7 m9 ?1 ]% ]1 A* L;;
评价时间) @( G2 K) M3 B* O9 L" l
ask myself [
. x0 e( F6 f) G$ K6 k& _update-local-reputation
+ {$ A1 E2 m6 k$ p9 x  @set trade-record-current lput([local-reputation] of myself) trade-record-current
; f' ?0 n  j) }# S% I; o- i4 b]/ X# L( G; ~0 Z- e7 P$ C  ?
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 j6 X' q1 Q2 c# s) d: j! ], {;;
将此次交易的记录加入到trade-record-one# p) q, t" R% {- G" R" q0 E
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& W4 O. u% w: ?" i( }- m  Plet note (item 2 trade-record-current )
  V  H  t& v: z$ \/ Zset trade-record-current$ [0 H, Q0 l3 T. T
(replace-item 2 trade-record-current (item 3 trade-record-current))
; `# u2 S/ ?) O
set trade-record-current2 }/ m9 G: T( z- Y. n' E) p
(replace-item 3 trade-record-current note)
+ R: W/ b8 ]: _. f* S) ?( ]" e  O
8 C5 g% W- z* r
" {( B3 Y( l- \- [. A
ask customer [5 i2 w" Q" z5 O8 N
update-local-reputation/ q3 ]2 m) L6 X% S0 ?; {0 F  H! t
set trade-record-current
/ m' ~; ?+ t  G- c. `' }2 s8 m) ?(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( a0 h3 E, L. ?/ N& a9 l* []
4 b) r1 z, R& i% f8 P" h1 {: G2 j) G

& f* |) N& A- Yset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ B: |8 ?0 n$ S6 ?9 b. s3 ^

( [, m* D) @7 b' C, T" K+ l* cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, x- O6 u; l* P# f5 w+ S( E/ H;;
将此次交易的记录加入到customertrade-record-all/ [$ ^$ w1 o9 b0 j; ]
end8 i- @% y2 f0 Y: j. y" Z

5 d& I/ r! S& b; U0 n: k! bto update-local-reputation( d: x! @9 e9 c7 _
set [trade-record-one-len] of myself length [trade-record-one] of myself- P6 D# m0 N* k- N$ F  V$ M0 }3 w
% C6 y# U$ i% {4 ?) X# ^2 R$ e5 L

6 y. b- y7 W, P' f" ^;;if [trade-record-one-len] of myself > 3
. X' @$ y' v0 M9 Y9 Q. _8 b
update-neighbor-total! n4 `; t& m2 n" _& T
;;
更新邻居节点的数目,在此进行
3 `- q, E* C1 P$ E. Q( P) Q: C7 alet i 33 m1 q% I+ K) O1 p
let sum-time 0
, p- L$ ~; B% p) E( |$ `% gwhile[i < [trade-record-one-len] of myself]
+ X+ F0 Z1 u# j9 z4 B3 q* b[# r# {3 ~8 N- y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 u6 N$ _- v6 x- d8 _set i  m  l2 ]! e0 K) m* d- O: b/ b
( i + 1)

& z0 ~3 p9 o! j0 k, l( }( u+ _# V: {]
* g  f" z0 h! ]let j 3
$ Y9 T8 W/ C! M2 R' F9 f3 E7 alet sum-money 0
+ e, p, U6 g$ c5 {- w# u7 Pwhile[j < [trade-record-one-len] of myself]4 g, i( y) Q! s' M. `' x- P: Q7 T
[8 @( C5 A5 O& K/ z7 A% N0 s1 c; Z
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)
2 V0 ]9 d2 \4 D9 Uset j
5 A+ `% H* _+ J$ F3 h  @3 K( j + 1)

! `; d7 P: `1 _4 e0 ?  w]; D6 U2 J2 ~( A& S6 ?
let k 3) Q4 P7 B% t; g: s- u# Z4 k7 ^
let power 0
% A5 a1 c& @. I+ ]$ w/ g4 q9 K4 Mlet local 0/ d3 I$ o3 \9 A8 C4 M  G
while [k <[trade-record-one-len] of myself]
/ d( M! K, @! {  d3 o+ j[" d& A6 p* U# E, M- d
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) & Q8 M8 c9 y6 y* y% V( v
set k (k + 1)5 U' C, y# x2 X% v1 l
]# D/ X2 c8 b& o( z
set [local-reputation] of myself (local)+ \: n* I! q; [$ D6 \. ^2 U
end
7 l" P  \) ^: Y4 h$ Z# [/ v6 {* w, s  c5 w/ t8 n$ h: N
to update-neighbor-total
3 R0 o3 }9 [5 S0 _/ z; r8 X
4 Q% |* ?% Q& b( eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; B! w0 w4 Q+ o

$ k4 Z1 r) M4 {* H
8 E! x2 S5 F  p( v
end/ `; `8 Q  U/ f4 O% o

- I2 m0 B+ E2 j+ `( Mto update-credibility-ijl 8 q4 u% i+ O9 n

) n8 I% T" K3 O  s) M: K;;
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。, |& l  l1 [* L/ @7 l
let l 0, @: R  C% S+ C3 B' p
while[ l < people ]8 h. K, O' q2 X9 G/ G( e- 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
* @4 ]3 h) I1 r( H: w) m1 |[2 t# u7 L6 A% d, Q5 Y  X. c
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)) r+ l8 }# P: d+ @
if (trade-record-one-j-l-len > 3)
3 `' M/ I0 c! l[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-one9 b# s6 P% v* y5 R
let i 3
5 G! l1 i$ m9 z" {$ Q  @let sum-time 0
9 m2 f2 T8 ]# g& n$ i! c; u& gwhile[i < trade-record-one-len]) A* T, v: U$ e+ ^1 i+ Y) t
[
& }& I# F/ E7 z. p) P! V3 B. uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( [1 o; G  e0 f$ u& S  m; p
set i5 F% Z6 j/ C& y% A8 G2 E
( i + 1)
7 h0 v8 C8 ~7 _/ H1 w
]
- @& ~: z  n3 E5 d6 X! @let credibility-i-j-l 0* D8 L- v2 }3 [2 ~* Y$ U) N4 V5 z
;;i
评价(jjl的评价)$ |: R$ D% C: }5 }2 x2 G
let j 39 u- d, d" K5 `0 ]
let k 4
5 M% y' K7 E/ E, u4 U2 p. ewhile[j < trade-record-one-len]
& _9 W0 I$ ^/ B2 q[: I% a! P5 G. C& N, k, i
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
2 A, W7 y, `% j3 Z* ^, P# 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)
& u0 k& d" p- a: u- cset j, k! H& B; x( f8 q
( j + 1)

) s* s6 |' g, `: _+ t]  _, h- k) E& H& }/ Y, |/ H  I; ^
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 ))3 R9 A- x$ @; Y3 }
$ ?/ N6 A7 y9 g
2 b7 p$ l% R7 _: N" u+ `
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 z" `- i7 }, ~
;;
及时更新il的评价质量的评价. T, |: r$ f  m, O1 D
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 l' F" {" s" wset l (l + 1)/ `7 W9 C% }6 e. s0 a0 {
]
* i4 b3 P- s( V* H, _end4 p' c8 ^1 N0 u1 m+ p" P5 c

0 b3 U- u/ S4 Y2 M: pto update-credibility-list. u; N# G1 m& d) P
let i 0
! k4 A2 q. A3 @0 Twhile[i < people]; |4 [7 i8 p: H
[8 C% N" W  i# b8 t  B4 ?: k- [
let j 0
( ^/ ?  j) i3 I# o6 C* L' R3 Ylet note 0
2 O8 w; Q$ d' T. q6 f0 @5 flet k 0
$ J5 U" h& n! M: c;;
计作出过评价的邻居节点的数目5 _. e1 i7 K7 q" H5 L2 Q7 f* k& S
while[j < people]
7 V  t* @5 D, R1 `) ][2 i8 |- p$ A( E! q, _
if (item j( [credibility] of turtle (i + 1)) != -1)& [7 T, W0 V$ W. ~9 r  k1 S0 U
;;
判断是否给本turtle的评价质量做出过评价的节点
% H' ^; {  |" O8 e( w[set note (note + item j ([credibility]of turtle (i + 1)))5 g  D) o. {; k) j
;;*(exp (-(people - 2)))/(people - 2))]
' ~3 K3 O, o3 M. A, L, O! |% e
set k (k + 1)3 x/ E4 b1 z' h9 T8 [% l
]
! k' `# B' Z  L0 M- Y' D1 t. zset j (j + 1), j2 z- ]: @& w5 J" s/ C# \$ c5 b
]
% b- Z: X* t( a/ |. ~/ eset note (note *(exp (- (1 / k)))/ k)
; S; x; D  l4 o5 u, N" p; xset credibility-list (replace-item i credibility-list note)5 Z2 n* ]7 n' U, q& A* M2 G
set i (i + 1)6 E* \7 |; ~) P: V& c5 ]
]8 H! O8 Y0 a" O' f' M& U
end
; S* q1 O" t2 I$ |! H$ b) |4 W# \
to update-global-reputation-list
8 ?" |# K( w8 l3 a7 _/ ?" p  Vlet j 0
. d7 t  W1 N+ b) swhile[j < people]: d. E) J# n! _: X
[9 B6 Y( u6 C' n8 X. Q  f1 w9 `' d! T
let new 01 {1 t" {7 X0 ]; c6 L
;;
暂存新的一个全局声誉
! T0 p  `8 ~3 z" _5 Glet i 0& R( {! @- o$ J! D) r# D
let sum-money 0
0 S& }/ N. ^" C( }: O6 K8 O1 ilet credibility-money 0
; G5 J" H3 {, Hwhile [i < people]0 C* S( S" ?& a3 W' b
[& h1 I+ e2 T4 s$ I$ Z6 m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 Z" r' t# h% V! ?
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 ~8 C2 ~6 J; j2 }1 e, x
set i (i + 1)
- m# s) U3 y5 \9 f# M% [9 Y  u% k]# {: J7 \& M. v% G+ \* R9 r  q
let k 0
8 B: U  h8 ?0 C* }' Plet new1 0
# S' T9 g* C1 N6 y2 h& s3 ~while [k < people]
2 f! x& Q% a( A% z[
3 ?/ u- W- P) Z# \+ S8 t$ oset 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)
% l+ l4 f( n; Lset k (k + 1)* r& _. F- S' h" ?
]+ g, ^& t* g" [! M! P% y; K& F: d
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! _: J( c0 g5 O8 B0 Nset global-reputation-list (replace-item j global-reputation-list new); {1 O; `" `' O! Z* L6 B% Z; @& _# B
set j (j + 1)
+ Z+ o7 L6 `! z1 ~4 t* l. d% G]
1 @& ~! Z9 ]$ I# g: l  Q1 L, r3 Zend% W5 k$ L4 v* Y  P* J
8 ^; }) ~  d8 e) T. e

# @; {6 Q" [2 c1 [; |
+ U' H2 ?! H. @4 z4 u, k. R: Ito get-color" i& J8 y& J: R

4 P+ Y* g) a  R6 \set color blue
& J6 ~+ o6 S& Y  _, g
end: z' _! L+ w  H! h- L6 X) \# O
6 S8 D3 H7 G8 G# F* V* I
to poll-class8 v5 Q; Z7 v9 M0 K; E+ Q6 K
end7 K! Y% c  Z( j7 s- m

8 q2 I* }% y7 C3 n& eto setup-plot1
' v) [* I& d6 A* m0 R! ^0 I! r
5 N9 O3 J; i# U" A3 ~set-current-plot "Trends-of-Local-reputation"
# o3 t0 F. L! ^* ^6 F

  a9 W- h! x' S  Z* b+ z5 X$ p+ u+ |set-plot-x-range 0 xmax

) I0 i% `+ R4 {) e# ^7 C+ w" s, j( H, Y
set-plot-y-range 0.0 ymax
$ S7 S0 J5 n7 W8 c
end
2 Y* x! y  C0 n. F7 N( m6 f3 V: X- ?
' ~* n5 M# C" ?5 j# {to setup-plot2
. `3 V" S8 L/ i, _; h& B6 [8 r
( \9 ^9 k1 K8 s; t! W4 Rset-current-plot "Trends-of-global-reputation"
/ v' \8 j  [8 m5 y- M: u

8 U' w  e6 h+ t4 V' Gset-plot-x-range 0 xmax

4 T: T. u) v0 e7 o0 L) H
/ q# [& s. E4 w- Z" cset-plot-y-range 0.0 ymax

  G( p6 A$ ]3 Z4 l7 v) Nend9 b3 N  V. P% F" n, l
- ~- F  e3 M  u( M+ B
to setup-plot37 U3 t1 V$ b# d

+ d5 Y! E  C" z4 z, P  Y- a$ N2 `1 Qset-current-plot "Trends-of-credibility"
: m/ S! K! J/ d. A
/ P: y: j! k7 o  y" }
set-plot-x-range 0 xmax
* G. `" @, ^$ M$ x: O
$ z! v- g% R' g- X
set-plot-y-range 0.0 ymax
$ v# y+ o, A, d+ b. H8 F$ k# k3 H
end, L+ v+ J: t5 A  k7 u
$ d  k8 L% V6 \* ]5 q
to do-plots, b2 ?" o+ @: b" b. P; Z  K" S
set-current-plot "Trends-of-Local-reputation"
% _3 P  ~; _2 i! o3 p* y* ~set-current-plot-pen "Honest service"0 I4 E+ I' a1 [1 \) C( [1 B  p
end
! x! X" F, o* m9 D  w9 y' M% I1 ]1 \
[ 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.
; \7 V) R1 C* q
9 w/ U1 d$ k! C4 ^8 Q% d, M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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