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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:
% f$ v$ q9 Z9 W3 a& W! b7 bto do-business
; Y& M! L7 S1 ?# c3 Y( w! f" `. K rt random 360* |: Y7 Q2 i, D* R, F6 O! R
fd 1
# r3 O  Y) O$ R: l7 ^1 X ifelse(other turtles-here != nobody)[2 b1 j: {) T. n! R
   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.
1 u$ r, [. [9 Q( w8 i, {   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * M( t$ P5 D0 I6 k6 L, E
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* r0 |( D* X8 }4 k* U7 r* h   set [trade-record-one-len] of self length [trade-record-one] of self' v% U- o! B! F
   set trade-record-current( list (timer) (random money-upper-limit))
! T) k) D  q% T4 P& M0 z
6 B* E  V5 k" o# N问题的提示如下:0 }/ N* a; e: ]+ \. R2 {

! f/ E% t. g" b+ `error while turtle 50 running OF in procedure DO-BUSINESS  a* \% l2 d6 v1 e  _/ @/ X
  called by procedure GO# C2 D1 e. T, x  P' ^' e1 D
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% h) T- o; _  ~  c# k
(halted running of go)4 j% ^' e* q# c0 M+ w+ i

1 A+ p2 }6 T; n' Q( l# u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~~  Z( K- C6 \; i' g- T6 B
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
1 T$ t6 i5 }8 cglobals[
# m  R2 m" A0 p. oxmax
9 }; Z3 x) P5 @$ e! Pymax
: A% ^" s5 ~( {4 P& I. C4 ~: x8 Vglobal-reputation-list
  F6 _" W, O7 e8 f; c2 N5 [& S
$ u- {. P: f8 U, a- r;;
每一个turtle的全局声誉都存在此LIST
2 v' ^0 ?2 e$ Z" b- Wcredibility-list5 o$ A" I1 C; A1 ^4 N8 n# {( }% k
;;
每一个turtle的评价可信度
" N. {0 ]! i- i  Thonest-service
# E& Z% p: h. Nunhonest-service
! C& B* W8 v1 L8 j" r+ J. Z, Aoscillation
3 G+ M. `5 w1 B! I( D+ vrand-dynamic
# G3 d- G+ f9 e3 q9 f- F: x]
! a! j, a# A! |4 y6 F0 V$ \* B8 G$ K. \' s  C: o
turtles-own[
" q" c+ r0 b, \8 R+ Strade-record-all4 O$ N8 L3 e+ T) Y7 q3 i& J# K
;;a list of lists,
trade-record-one组成4 |1 v2 s& i4 Z% W
trade-record-one! c9 Y+ z( b0 E  U
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
% D# `  C  @1 c4 P; w# x0 [% r) P) B- f4 K( a2 q+ K
;;[
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% L( `: d4 m" P) ^1 Z( H$ k; }
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]
8 W6 f; o0 _; _: H9 lcredibility-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) ?; f, N* Z" Z- h0 V0 j
neighbor-total
8 \/ S) D2 }$ r5 M  p1 B$ A4 m1 H;;
记录该turtle的邻居节点的数目
& ?% x( T1 `0 r5 d9 ktrade-time
* y$ b. q% _) U& Q+ T;;
当前发生交易的turtle的交易时间3 N' a& x" J: @1 P6 G" d
appraise-give
: C7 q; k3 O8 Q  p- };;
当前发生交易时给出的评价7 L" t' }" B. F4 [9 g5 _
appraise-receive
9 c' f1 Y* j  e) U# `, ~;;
当前发生交易时收到的评价3 c  p( u( G1 n1 {8 l6 C* `: I, c
appraise-time/ i7 }5 i4 Y' u4 _/ D5 M+ k+ U1 \# N
;;
当前发生交易时的评价时间6 Z& @7 R( l" D# V! b1 g! j% o
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- ]) B5 _2 N+ p: X& U& v# u8 otrade-times-total
( x4 w* z! r4 l$ }: u;;
与当前turtle的交易总次数
% A% }* D1 A; `1 Y  r9 o! T' M4 qtrade-money-total
8 r+ @) ~! u3 B" X+ r' _/ S1 [- S! t;;
与当前turtle的交易总金额1 y5 Y) l: m1 r9 `: K  Z
local-reputation8 y  E8 Y/ C! S5 s& }1 R
global-reputation6 o, W( X0 M% q6 N0 G. w, c
credibility1 x6 W! p" K! P- C& {
;;
评价可信度,每次交易后都需要更新0 L1 T9 B* ^* M7 G6 N, F
credibility-all1 x3 }$ y! F7 z& H: i% a
;;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& i, j+ {8 S( s  E- r* Q5 W3 m
" k' b$ f- G* b5 f  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/ C- ^+ ~0 {* }; g+ z/ r& }
credibility-one
- k: X+ n1 `# i- N1 _;;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
2 f: R9 W0 L# X0 q4 H: N3 t: l2 wglobal-proportion
" L* k6 ~5 g/ z- _5 i  m$ Fcustomer
  K1 _, o  q" f0 ?customer-no
2 ?2 B$ X9 A: {trust-ok/ [/ Z5 C* l* x  S
trade-record-one-len;;trade-record-one的长度
/ D4 M- x2 Z' q% a+ x]+ k8 D6 a  M5 a7 P/ y/ y& C

0 ^. U: }1 M+ D: B' y;;setup procedure7 L! u# @% Y8 c* O1 B; Z

4 M3 N" y) y. e8 K- O" }to setup
5 m% X& j* q: _2 N  r3 q
/ M" t$ C/ \, Q& J1 Xca

  s  z9 ?4 W1 m2 P, n$ Z+ P) ]) z  b- M3 m0 V
initialize-settings

4 m, c. z2 t: v5 y5 {9 |0 b* I5 U2 V
crt people [setup-turtles]

' ]8 D! z1 F+ k, w* I# i: B+ O, N/ M$ U! v$ U+ W2 r& _
reset-timer
1 B9 |: D& Q+ v9 ]8 ?/ Q, l2 A

& A1 k) \6 L; U2 P3 U7 z8 k" Fpoll-class
- M+ b% L: c" C. {

; K  @/ U, K0 U. {* C! B4 X) ]setup-plots
4 p9 S7 W& G" F+ z4 {
0 V7 ^" @4 U, ]. p: u, p
do-plots

1 e6 d  U5 F" g% }) q: ]end
0 G' @3 S8 R( S! J& R9 u/ s( S. Z
& `: m6 A% h" |( Jto initialize-settings- U! ~$ V2 S( S

; [; Z% ^: H2 D  ?set global-reputation-list []

6 V8 Z6 G8 g" W% K" N0 j" I: q: @: y+ X  T% [& ^/ W* R
set credibility-list n-values people [0.5]
) M7 J: u5 T+ {

6 D3 o9 o5 _7 fset honest-service 0
* j; Y# ?* ], z) F, |) a3 x

5 k6 \9 k6 \8 p4 l, u3 n/ B% F! ^7 fset unhonest-service 0

- x' m, A# M+ @" ~$ R9 I7 E$ |0 j* W* s/ _) n+ a
set oscillation 0

7 @8 X  H4 }" X% _8 q
# j5 S+ N, [: ?1 i# vset rand-dynamic 0

# G3 a/ r9 ^2 {8 t0 D; p3 wend7 ^( B$ I) j( s+ G- T9 O& G+ P" D
& ]" m7 p' V/ `) }+ I
to setup-turtles ) }& @  ?" }5 O7 g1 \! l
set shape "person"3 h& ~3 L2 r9 n1 w, r$ i# a3 O. M
setxy random-xcor random-ycor
3 ^" w2 g- x. Z6 ]set trade-record-one []
: j3 E2 w/ n, Q0 k4 l
; i5 ]7 N; E. `* ?
set trade-record-all n-values people [(list (? + 1) 0 0)]
) ^) h, ^( g. ^+ k' i
% E1 Q5 V7 G  @, @8 c: @* _% ]
set trade-record-current []
6 M% |% j. i& @# c% A5 W% iset credibility-receive []+ @0 a. y$ q8 X) d5 n0 \
set local-reputation 0.5
; ]* \6 n7 x$ Oset neighbor-total 0
5 W2 Q/ K6 U: o3 }# H' Dset trade-times-total 0' E( j1 U- r: W* t; n$ R1 `
set trade-money-total 04 a# _$ V: N$ v. b
set customer nobody+ Q6 G8 i. Q" T9 B
set credibility-all n-values people [creat-credibility]
/ Q% a* o. w( H5 s, Qset credibility n-values people [-1]# k' v1 j: ^& x! H8 x6 F
get-color  W  c8 Y- C! ~. a4 p& `3 U

0 H4 P/ s3 t% r6 S& E; ~end
3 A! L, V9 q, Z! S7 \. p( d
5 z) J* f! S) y! f1 vto-report creat-credibility
- I0 l$ J6 F8 F+ U. M$ c6 n- oreport n-values people [0.5]
9 C/ M8 F; E( P. k  J$ R# iend
& B7 G1 Q+ v# G; ?- x5 L
' Y- j. J8 ]' D( \- E8 s) qto setup-plots1 y) F0 a2 N5 K( s
7 S6 g" f8 K/ x: Y* J) v
set xmax 30
0 j6 C! y) @/ p: O& g! _- `
+ H5 }' I  ^) j0 D( ^
set ymax 1.0
  z4 m( S0 R; B0 k

' e; Y3 y( j( l/ _; Aclear-all-plots

' f- K+ B9 q7 o
1 K7 M! p* R7 u7 N% ssetup-plot1

5 V/ a5 S9 \# k" D7 q. J$ f5 d- d8 H* ]9 t# }0 m) S
setup-plot2

( d3 {; y! u' ^+ C; ~$ d  i" i" i5 Y( H1 S$ F
setup-plot3

1 t! j0 `+ o* L9 lend
: ~  z9 W$ D8 Y$ i  v8 ~* j: {' ~
;;run time procedures1 Y8 I. a8 ?, I3 R5 M8 p7 n7 H5 f
0 a4 j5 w8 ]; l6 h
to go
/ T8 M& Z1 W! h( B& C, P/ h
" c- Y- |) O/ n+ Z+ N7 Pask turtles [do-business]

& C4 |, `4 N/ D  K: g/ {end
) o$ l( g( P* M. _) o! ^; f9 Y+ w; Z( j" |9 L0 ?
to do-business 5 a# T# C3 w3 c2 o" @3 k
8 O# S2 n, q2 T/ p! N
0 _/ K5 u9 R3 a0 E
rt random 360
: e( k( I. o- H7 f* l

4 |9 [8 H6 j# r% D9 f" Afd 1

2 m" l# k5 E' H& W/ M! R% h% @# @# w2 r
ifelse(other turtles-here != nobody)[
5 x. V7 k4 s+ r+ Y, H9 }
0 A- g) S9 G) C* |- u+ O
set customer one-of other turtles-here
! y4 G% O9 }, M+ K' M' B6 V

5 v+ Y5 G3 d4 ~$ b. I;; set [customer] of customer myself

( s  I' B6 k: u0 Z5 h) i! }2 W/ U2 O+ y* D& z6 \
set [trade-record-one] of self item (([who] of customer) - 1); a) x& H: J& c( ]* q1 |
[trade-record-all]of self: V; Y! K: L  R5 [" b, o" D
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% o  @4 c3 q' e" V& j6 F* [

# ^1 Y& a/ ^% ~6 S/ O% O4 Lset [trade-record-one] of customer item (([who] of self) - 1)0 ^+ J( a" s9 u) l8 ^( c
[trade-record-all]of customer

( f9 t) F3 |+ p+ E. M4 j" ?9 z$ v7 f0 ^7 V& |
set [trade-record-one-len] of self length [trade-record-one] of self

' M+ w2 |& Z' M- f1 `7 C$ e& d; M1 l
; ]( w% _' K/ d& p1 Aset trade-record-current( list (timer) (random money-upper-limit))

8 P- r  a# @/ y0 `7 P" O/ J) j4 ^6 ~9 ^; g1 A$ j- h$ W' U
ask self [do-trust]
) ~/ }. ]3 e9 |) a/ c;;
先求ij的信任度
5 h: q  V8 W4 o% N) t5 I
/ c; D! c: }4 ~6 I& bif ([trust-ok] of self)9 i0 v' D& t4 g- [
;;
根据ij的信任度来决定是否与j进行交易[
; R9 P$ ?7 ?  D0 N" Cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 P/ ?4 g1 \  d, u
% U, x3 K6 [4 |/ c  c3 `# }[
" _9 H) `+ o* C! v4 o
3 d' V) {4 r" g
do-trade
4 I+ Y8 k. _( A0 U) |1 j

+ H1 a; T. }6 [- i. O! Qupdate-credibility-ijl
2 F3 d, u" [, K1 r" u' c

- z# I! Q% N' d& tupdate-credibility-list
- W3 C( x. O" b% x3 r
% O  q, g' c8 Z5 H2 \; a0 o+ S
2 f, m5 V! p+ D  q! R+ G
update-global-reputation-list

0 N& A, A3 W2 f' S+ L- L% ~
# C; ]" [* D0 f( m, \poll-class

3 ?2 [6 @. s' H* ~' ?: Q7 v
3 u8 @7 \0 K9 b: p1 m( xget-color
$ v" t6 k& L! G1 r3 o# g3 ]

3 \: g. I: p% M$ Z8 \7 O]]
, H4 h' [! _3 l7 W, o( ?% X7 a6 i! A* T1 D3 \$ H! W
;;
如果所得的信任度满足条件,则进行交易+ h" l% U  L& F3 r. e7 G6 ]
9 k+ S- R6 x/ I3 j& T' h0 R" u
[

4 Y  Q+ D- U' {& z9 N7 k( |9 n) _6 E$ L, F4 \: v
rt random 360

: P1 ]+ A, P2 D/ Y) F7 D" t4 ^5 k8 l: B0 b5 q+ H
fd 1

+ t8 [- Q; \! Y6 C( {( }9 a4 u6 [: h0 b! ~9 H
]

( I1 B, n! |/ V* M; L
1 C; \7 {  p* Q/ Y% {, H7 Nend

  U  v' w* [- p8 w  ?9 Q8 |9 m( n) K/ d3 L6 q1 `
to do-trust ; v0 m/ h  w: N8 |9 w
set trust-ok False7 Y: X0 z; J$ N& A2 |
7 u0 z, w: J# t" M" x$ H7 c$ H
3 I8 d2 P0 ^0 p7 O! u' g
let max-trade-times 0& n0 e1 ]8 X1 z! P! N3 M! x) \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: T  U' d: ?. t- N; Rlet max-trade-money 0
/ N: c; E, h, W# s) C/ Bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], B# Z6 d# j) ^1 G7 q7 Q4 \, W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- I2 S1 A0 ~2 s* }6 E+ w! C
" F. K' p; I& G6 K5 T

- U4 u( t1 X  x* pget-global-proportion9 j! v( T) \8 `( h1 Y8 R
let trust-value
/ L: P. G* u% M" y- Q9 U7 clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

" j5 j: `1 O+ s) P7 ~if(trust-value > trade-trust-value). m, ~% Z- D3 s8 P+ T7 {3 f
[set trust-ok true]. t3 z) `0 I" ?* N& k7 ?1 ^
end$ q2 I  |& q# D$ `, c% X6 ~: z
7 y3 W5 _3 U8 g# P  |. F& @
to get-global-proportion; R( U0 J! \' Q4 ]  i2 g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 H- w, |5 F6 [
[set global-proportion 0]9 Y1 Z/ N' y" W# W' c0 b$ _) i
[let i 0
! b, @5 D1 Q& c) Qlet sum-money 0
1 h0 l, k5 w  _while[ i < people]
3 Q! G0 o" A) Z7 s, V2 F% L' E[6 Q& b( o; |5 w  `% `! U& O
if( length (item i
/ Q+ t6 V$ b8 ^9 v* m[trade-record-all] of customer) > 3 )

: {9 I3 K- a6 Z( b[9 s! k  \4 a0 ~. G7 e6 f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* o! j9 I5 r. w, Q4 @  N]
: G  d1 ~/ l3 J: f]
( k: c: b* K# Y9 {let j 0+ C6 ]. _( A9 b
let note 00 G, k9 \3 L' r: d4 g7 q2 `1 v
while[ j < people]
2 \/ p+ X1 B# Z5 O8 g# o! n[$ }& p# S0 D' W! S# L4 x% M
if( length (item i
6 F$ M$ a/ l8 G4 F+ W& j) `0 C) T[trade-record-all] of customer) > 3 )

/ B4 k* J; N( N" y% j. h[
0 u1 _" C8 M; v/ z& l) K6 Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ a* ?! s: g7 s; Q0 p" A5 x4 c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( A: V) ]: E( f: c, v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% T2 |6 @+ \. {# `1 x4 y]
% J$ r) }6 m( J; L' [2 U5 m* h- l]
( A0 u% f( A; M! Y* H  w' e0 dset global-proportion note
5 Z  u/ C, d6 q6 ?]  I$ [2 d, ^. ^- H. ]
end
( I/ K, A' `* g7 D) t* d- i7 v$ e: m0 t) ?, r' M
to do-trade
; W  s" l; K* ~' W( Q& j;;
这个过程实际上是给双方作出评价的过程
$ \7 Z; G: c. b) U& A' u" Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 d6 J, a# k) L* p4 D9 Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 K( ?# T4 l5 j* j( i& @- h& k- W
set trade-record-current lput(timer) trade-record-current
( J. M4 q. w* k8 M8 }( x;;
评价时间
5 `) M$ _6 Q  C& V& f; ]ask myself [
1 H% ?* y8 K3 t, Iupdate-local-reputation/ T! g: {! X/ R3 V  c0 v) a
set trade-record-current lput([local-reputation] of myself) trade-record-current: k0 ]& ~/ m: z
]4 a* N# c" i: L2 S
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 K  O3 F' l3 v( p;;
将此次交易的记录加入到trade-record-one
; ]' g9 `/ E7 j, q. V, a$ h( Tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* X3 [: m: I$ |7 b  Dlet note (item 2 trade-record-current )( \( I$ @, B8 T$ ]$ h
set trade-record-current0 F6 ?# _  A: ~" w' D; a! Q% T
(replace-item 2 trade-record-current (item 3 trade-record-current))
, w# [) J. K# l$ D7 v
set trade-record-current
8 j" t, X+ U/ L( L- ~" p7 ^2 M(replace-item 3 trade-record-current note)
- \) t$ I* A. D8 N6 v6 Y. y4 H2 d: L/ I& y, v
6 J8 X# h/ U  i! D/ l+ M# {
ask customer [
, `# {/ l: x! z3 r1 K" U4 H, p  Cupdate-local-reputation' u+ O! n- g: G
set trade-record-current1 p) x! l3 X2 w* W! {
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ ?0 Q: e" B4 L; o$ ?]& O7 Y1 {3 ~2 }$ x  V
/ L9 U' `& N! U1 ]) D3 @( c' ^

3 o  c7 }: [$ r1 B  W- w$ A, Oset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; U4 A. p% b4 j2 m
9 p  s. c; Y* k- E. k: |
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 \' k- K1 z: J! @$ ?8 Q- |
;;
将此次交易的记录加入到customertrade-record-all
4 `# i. o4 H' X6 b: F! g! t5 C7 Xend
7 _1 f# O. M+ B8 t# F/ J* V; i, H
to update-local-reputation
1 w; h3 X. F8 W4 @! O9 O# Cset [trade-record-one-len] of myself length [trade-record-one] of myself
# K: m+ d+ I- R
8 w( l3 M3 I2 \3 M& [4 H. \) ^0 p6 Q# H' z9 U+ D4 z4 n# R
;;if [trade-record-one-len] of myself > 3
& m, h  q& N  U( X1 k5 B4 B
update-neighbor-total
7 A7 e+ Q) Y' I( E2 _;;
更新邻居节点的数目,在此进行6 h# T: b" i0 N/ X+ u# P
let i 3
! ]- r$ C$ ]0 x4 f, A4 elet sum-time 0
4 P! N! P  @+ u9 f) u( w% v, Ywhile[i < [trade-record-one-len] of myself]+ C5 g) a( e" @9 ^0 \
[7 G7 Q! G$ a" L2 {7 ]/ @/ f: D
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 z4 s8 [) M7 L  S- z; xset i
7 K5 q# V9 M4 d  K' u( i + 1)

& L! U9 J, U: u]
2 s3 k" U- Y4 L! T* v: I" m5 j( blet j 3' F+ I5 g0 o5 [- H9 W+ B( W" T
let sum-money 0" {: e4 |+ r& m6 ]9 h, Z  a  i
while[j < [trade-record-one-len] of myself]
' M5 k' q% M9 d- R( O6 f) ][
2 V# K8 Z  j- g( e" A; mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
- o6 w+ C" E& `set j  b1 B% z3 G1 j  b  M# R
( j + 1)

8 P3 W) \/ a- \, ^]
% G# K6 J) _6 j) k3 D5 W  T  glet k 3
) L/ p4 m3 V$ x0 K: U+ s- Mlet power 02 c& g) H& K3 z8 J4 n
let local 0, z7 l$ C. c9 O- K! m3 i# \5 A
while [k <[trade-record-one-len] of myself]; h3 K0 X" C0 C$ \0 J/ w# ]: w
[+ }  d% g" F6 N5 ~
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)
  |4 [; O# P! x* i- y4 tset k (k + 1)
/ f& @$ x% }- l' S]3 h5 N/ W- ?& T% h/ L
set [local-reputation] of myself (local); a3 O8 X/ m6 d9 D2 a! @9 p
end
: D8 ~1 k- t: Z: `! j. Z
+ p$ J/ Z( l7 f( W; d4 ?6 hto update-neighbor-total& @: {1 D9 P, B) n. ?

  J2 K4 G( j; h9 s; C2 O7 k. Nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( s5 ]5 |) }! B4 C9 ]: n- O
' I6 a- j! K* Z. N# u' R- P

) a# s7 f, c9 r( J) N6 V5 y- dend
. C) S8 _9 ]; H+ P+ [
& ]2 m+ S, e/ v# h+ yto update-credibility-ijl
5 L- f- `/ |" ^% V8 s1 p$ F& o% l& I6 `( [4 D/ q
;;
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 W6 `5 J3 e- o0 H# k! a4 v
let l 0) }1 O7 i: `$ \* K2 D0 b4 |
while[ l < people ], o6 b7 U/ B( K3 Y$ [
;;
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
* h. n( o; m; k/ [4 p[
$ z' p) l+ x5 [7 i7 }5 Mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 o7 X+ J! R' |* W0 o- B1 X: h; f
if (trade-record-one-j-l-len > 3)3 J* m9 J3 D/ ~6 j! H
[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
: ^4 Z! I3 \" _/ B6 t. Alet i 32 P+ u: Q  {# |7 b" v* g+ W& U
let sum-time 0
6 z) e8 `4 m2 ^( \7 Fwhile[i < trade-record-one-len]" r5 Z4 O. e. j. x
[
5 ?# ]0 h6 G* ^8 z5 L0 Lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# L3 {, B8 S* O' k3 \
set i9 ]" D% B$ h9 z, O7 ^, ^
( i + 1)
/ E/ h3 R/ A: q4 l; m) \
]! f9 d6 i. u- X9 n+ U. u* ]
let credibility-i-j-l 0
) W9 b( o/ t0 w, ?8 p( \# _( h;;i
评价(jjl的评价)( o7 T& u. z( h% Q7 D
let j 3/ p% X6 q6 C! Y9 P/ c& {# x
let k 4
8 D6 h( O5 S6 I: u( Q9 Fwhile[j < trade-record-one-len]
( o/ j4 M, Y1 ~[
( f7 ^: d, H2 k; B- ?6 Rwhile [((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
" [% U) z: ~! h5 fset 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)
  ^  Q8 b3 Q7 c( lset j
( _; J, o7 w9 B( f8 i/ a4 s1 ^" Q1 U( j + 1)
% B; v0 p1 ]6 ~1 B" b
]
% F- D( d3 o" ?9 Dset [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 s/ a. ]6 F3 t3 ^9 ]/ a! G+ A
' Z9 c9 D2 [+ e9 P: U
8 }8 s6 n# T2 S! ], y+ L  d
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 ~, z: s! u! E9 H' S* p' A7 N;;
及时更新il的评价质量的评价6 C  J6 }) F& u" m$ u. `5 a
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& }7 [3 F4 i3 n2 E  Gset l (l + 1)
" j* V' u2 K8 f]
5 D( O& _: u; d: vend5 V8 }, E9 r4 x. b/ M4 m
: ~( Q" s9 Z5 K* v
to update-credibility-list% ^) y, q# O) z( {- \0 ?
let i 0. q0 S, l- f; Z: N
while[i < people]
- D7 W9 C* b, @! N4 n7 ~, C[: e) R% A8 S% X# y
let j 02 ~: H* o, I% M  B6 z" e& J
let note 0
" \" F* ?( p6 ulet k 0
, l, ^: b+ G( |4 i3 V8 M* Q* `;;
计作出过评价的邻居节点的数目: }% B7 r$ T) E! i& E, u' C+ A
while[j < people]1 A& Z; p' z0 S6 b3 x; s6 d
[  ]/ `9 [5 S" D* o2 H
if (item j( [credibility] of turtle (i + 1)) != -1)% s$ q) t9 ]* K7 S; J! A0 n
;;
判断是否给本turtle的评价质量做出过评价的节点
& T' ^, e* W; }% M3 `& S$ H[set note (note + item j ([credibility]of turtle (i + 1)))* y9 M, \+ H! ?& |% y
;;*(exp (-(people - 2)))/(people - 2))]
: l" E0 M6 I. z( T; V$ F
set k (k + 1)9 S( _" w' |6 x" [' E2 n
]
% C8 m* W) ^+ @/ U$ vset j (j + 1); U- n2 Q4 S. v2 I' F
]
3 T# V) F4 l" u, u0 _set note (note *(exp (- (1 / k)))/ k)) [) A2 D- k0 h" I7 ]
set credibility-list (replace-item i credibility-list note)
( p: @$ Z- w9 j; jset i (i + 1)
( `& Y. E; n6 U  x& T]
$ @. q5 X8 b5 r' D( E$ eend! c' h; D) f1 z3 [. i- l

$ h7 c' l1 m, v0 S' Z2 E5 [0 @7 N% Rto update-global-reputation-list; [& |7 l/ V) D* q
let j 0
, R! v2 ]1 ]6 i7 uwhile[j < people]7 D! G4 w7 s7 N. s! _
[0 ]) p/ s- M4 v  h4 ^9 w
let new 0
0 @1 k3 R% _  H- ?1 N;;
暂存新的一个全局声誉1 y4 e5 }: X3 Z" M0 @  k0 {9 \* C6 d
let i 0
% f7 g, H. C7 a. i+ [! ]let sum-money 0
: g" P1 Q$ D. ilet credibility-money 0
& C3 ?6 a0 f5 G9 d# j6 Kwhile [i < people]5 o. e7 q5 w/ n4 q
[1 W  K3 u3 z9 q! ~" I
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* f: Y# Z" H; M3 j5 o
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 b7 N  i1 J9 Y" Q
set i (i + 1)
( C8 a. m' l. \3 d]
) y8 \* p/ o" f  q8 y- y. n! ~let k 0. J- w! c6 o% Z
let new1 07 E3 y# ?& R1 t5 q6 n
while [k < people]: H& P% x! B2 V" M' m" }
[$ y0 F8 `  x/ ?( R0 G: D
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)
# `/ F6 M' {4 m- @set k (k + 1): T8 V$ i( x: p5 f8 j2 X/ t
]* [) B0 ~. v/ K; I
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" i+ g+ V2 G9 \. Gset global-reputation-list (replace-item j global-reputation-list new)9 H  A" Y) v4 M1 Z% H" U9 o8 ]
set j (j + 1)
1 E0 ?9 I9 p: ~' |; F5 i]
$ i2 y+ x& B0 P0 e+ Fend9 I/ k0 [5 \% E2 _% _' F  c
# F5 |: B% U" k5 S5 ]

* a; V  W6 s5 F# J7 ~- s3 a0 z9 G+ e9 x/ o9 ]9 [9 ~! [
to get-color$ @9 i1 E( j' N# ~2 ?1 h8 U

& N% O1 T: d. q. {; {& L, O$ b$ jset color blue

4 g* \5 a8 D- j9 G$ j7 W9 [% ]end
  Q4 Y' C5 A$ S/ v7 M8 e' F
. h+ j! h: V; c" g  j! x, @to poll-class4 A# B8 x! {( U: i- U
end, r6 X- G( `+ t4 F

$ Y0 }( Z  L/ T; P  Fto setup-plot1
+ F6 `, A0 C3 j: m; ^7 P  @$ i: n& d" ]/ m: z) T9 T
set-current-plot "Trends-of-Local-reputation"

& B: d# w) }+ h, g& v! a8 x0 N$ f% t  R& J8 Y: M) e
set-plot-x-range 0 xmax

, H3 i' O9 R& _6 l2 e, X. h0 E9 H' _+ E- v* u+ l" m
set-plot-y-range 0.0 ymax
7 F2 o4 {9 Y3 `; Z' ^
end
7 @0 n1 [1 H  Q5 c& @' N- F% h" n. P% r9 ^5 G+ o" j1 v4 W0 i
to setup-plot2
/ c! i  V! y* m6 ]1 P# \4 R# n  |. N1 @" F/ ]3 z: S
set-current-plot "Trends-of-global-reputation"

! y" u1 B8 o" X
% O5 O* ^$ L: ]4 q* m0 G9 rset-plot-x-range 0 xmax

9 c! K5 y4 N6 |( a& e/ w
" U" V* [3 @- I7 Z9 ^" u/ Cset-plot-y-range 0.0 ymax

! r% J8 j& v. h) }$ T3 _' Wend3 C5 W7 n! W1 {3 t2 f& g, V: g

: o8 K1 S( b  J4 jto setup-plot3' r# w- `& F, P
  _, I: f! M+ {' T' c9 G/ N
set-current-plot "Trends-of-credibility"
  S4 L' K" [/ Z- O; M: d
- h* U1 r& W' u2 ^' D9 z. Z
set-plot-x-range 0 xmax

4 |3 j+ Q/ R/ ]  g/ y: a4 s
" f) F: A0 m) G  Z4 s, aset-plot-y-range 0.0 ymax
! e1 d) O$ J8 h: v! @* b
end
4 k9 o# V% H5 U0 j8 y* x5 e2 g$ B! ~  B3 F9 j1 v
to do-plots9 A+ a$ a0 ]! B
set-current-plot "Trends-of-Local-reputation"
, R" ^( I7 }1 Q! b7 d6 _, m" jset-current-plot-pen "Honest service"+ X  q. j- @4 p8 {* d' d; z0 u
end
5 s5 |/ K- _: u# o' N  z1 {! }/ ^2 p, G. C, S6 o6 U% W( r
[ 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.
" Z; N9 V' J% }2 m, U" d- Y7 |+ S  }
1 Z4 z+ I- x7 x  ]9 Y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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