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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:
" {: z; l' X$ Y; \  H$ B3 Z6 n; F& lto do-business
+ z' b3 M2 m7 ^& ~2 d rt random 360
& n) {$ a8 b) n. F fd 1
  d* Q; A0 o. L3 C# g, l' b8 c ifelse(other turtles-here != nobody)[
6 D) p! j- u3 U   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.
: E2 \3 A  E2 P, L   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  u# R6 j* o% P% }   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 s" C+ t9 z, v5 F/ X4 @   set [trade-record-one-len] of self length [trade-record-one] of self, S% |0 ^: z5 n! E9 s
   set trade-record-current( list (timer) (random money-upper-limit))' C! `2 g" D. {, c  Y) b
3 s9 e/ @2 y, z. F5 f0 U3 |! D
问题的提示如下:( V6 H8 l8 f) C% |: P; N
: h/ q  v6 T/ }! n4 Y! p
error while turtle 50 running OF in procedure DO-BUSINESS* t7 u  h4 S6 C' d6 C. ]- K
  called by procedure GO' W6 J9 t* ^+ s2 ?" I3 v  ~
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 \$ M5 q! S% K0 ]
(halted running of go)
" p9 e( L5 i% p. E; @4 q7 E) y: s6 s% `2 E
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~~
, M" a9 i/ y& [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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参与人数 1仿真币 +30 +2 收起 理由
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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
. e, A0 r3 A) o5 }* Y, u! ^globals[/ x5 o! x& C8 b) F; j
xmax8 n! a) O% A+ k6 Q
ymax) |2 e) S9 {7 B. K
global-reputation-list+ E  J5 H6 W& F  D4 h6 Q4 U
6 d: W* ~$ m% O$ }4 n
;;
每一个turtle的全局声誉都存在此LIST; w8 s/ b$ m# `* h
credibility-list
3 N5 [8 q0 p1 U7 m% T# X;;
每一个turtle的评价可信度
; ]8 m* L3 e- a$ b2 T+ j9 y" Xhonest-service
" x8 ^/ Z3 Z0 Z5 ^5 o3 m! Munhonest-service" ]: B1 l! T+ B- M$ {# ~6 |
oscillation
  M: M, H9 ^) K( r" x- k+ Xrand-dynamic; a9 c0 s# c' y* B# t# x$ a
]7 v1 F2 Z; v7 _# G) Y) F. Y) t9 _

# o0 z- _4 v  S# _* h7 oturtles-own[
- k2 X* ~6 X1 A* I9 @trade-record-all
; i: _* Q; f2 V6 F. C;;a list of lists,
trade-record-one组成' B# Q( \; \; D0 j/ }1 {" f
trade-record-one/ Y+ @( K  o9 K) k, j( _: _
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 c+ E/ m% ^, N
' |) J: a6 u& {* Z. Y+ s( p
;;[
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]]0 I& s8 A: f3 @3 h" 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]( J% B& O0 K. `# l. v
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
" g1 v) _9 b% k# l6 ~neighbor-total* |& T+ t/ y% y( |
;;
记录该turtle的邻居节点的数目
/ |, T2 Z: R  j: ^/ [trade-time% p3 B& U* M& F: @8 h6 O( ~
;;
当前发生交易的turtle的交易时间: t: v$ ^; W+ G8 c. k9 S
appraise-give
3 f# C3 J$ ~7 v;;
当前发生交易时给出的评价: k# c0 C5 l, O- B. f6 i+ q
appraise-receive  d( d2 [* t0 Y# g9 X/ @4 `" F
;;
当前发生交易时收到的评价
1 d  S; T( _7 ?" G# `' A, i) @appraise-time
# }, e8 U+ ]5 b2 r;;
当前发生交易时的评价时间
2 q/ ]; [! g0 V9 m- Rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉% m+ {8 y& u3 ]0 V5 c4 Y
trade-times-total1 ^& [: B6 v+ J$ n
;;
与当前turtle的交易总次数4 r9 S- z( ~4 q+ L4 F% {5 O
trade-money-total
6 ?) k) D: x# F, ]$ Y;;
与当前turtle的交易总金额  a5 }4 b$ G: K8 r8 m  J0 M; ?
local-reputation
* A5 X$ ]$ r. N( ?. Z* ~; i* Jglobal-reputation
: y2 X  w2 d  B+ T% K, C2 fcredibility. D# F+ H/ Q0 [
;;
评价可信度,每次交易后都需要更新4 U5 V. f: O- Y5 j5 x# |- ?
credibility-all  ]! u- c/ ?, V- H' 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- ~- I6 t, ]0 ~/ b0 }

2 k! D$ J! @/ Q$ i& r;;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
* u! w! r6 [, F" k$ [credibility-one" p2 [, R& v+ ^' a* c
;;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
' p1 b$ c  G: }- {0 gglobal-proportion
7 {3 n6 K1 |2 h0 U  d  m4 pcustomer
- U) b' p( h" ~# J3 x5 f& ycustomer-no& c2 o; l2 V! N5 a* I
trust-ok9 K2 @+ e' R+ ~8 {
trade-record-one-len;;trade-record-one的长度+ k0 a6 {( u2 U4 ?
]
; \/ C- x# n; n7 ^* Z; k* w
& ^5 G# V9 c, U+ D;;setup procedure$ K0 T# ]" t7 p2 a9 d( R( D$ h' v

* X( m; n6 Z: {7 f. J, {to setup
# Z9 T- g$ v$ b7 A; H
% K+ {5 E% n; T& e! T- s6 ?% r3 Tca

' q/ y# N; I6 q6 \4 Z" d. F; e8 X2 q; {. t2 j. e! \  N
initialize-settings
; B9 e2 E) }* t

( v- r) v) F+ `& N# Mcrt people [setup-turtles]
# |: X4 A: K0 Q' O7 W% o
. g: [! [& o3 S2 C8 \
reset-timer

, {# u# z& {  r- J- G/ i7 {% |0 o: L: x4 \7 ~( \* ?9 n' J5 y: ?3 Y
poll-class
, O% S/ p/ Z; A; M" l/ V5 G

# ?4 s# K7 ?' a4 ^setup-plots

( w% g- L1 i  A: b+ j' A* q
. p  C8 q# y( pdo-plots

  O( z9 |: o9 j) v' v0 F; kend
; R1 f$ q) B7 Q% T" Q/ \' q
/ N0 D1 P. s: z% t3 Rto initialize-settings5 ?3 r/ F  K8 g& Z3 {+ c; h
5 H5 L- D" R8 @
set global-reputation-list []

% U3 ?$ N4 M. d9 z% J, L. M  c* i2 X2 A$ j4 G* Z/ u
set credibility-list n-values people [0.5]
  ^9 e. L8 a0 f% p

5 K; J1 d% g3 P  ?set honest-service 0

" @: W4 p$ g9 t+ t7 [- W2 m# @8 [2 _# B& S3 V8 u
set unhonest-service 0
4 H1 `# O2 |. {8 h& a

$ v1 E% s+ @" a% U8 Cset oscillation 0

& d, n* [) x# h& b7 T7 b; p. W* g# U/ D
set rand-dynamic 0
7 ~5 e; x' y2 V$ S+ h3 ?( U2 W  O
end0 ?  R3 m, T: H: C, b& X  k; ~% F0 [

6 b$ d: U9 u4 {9 G3 {* qto setup-turtles * Z, N4 W* k2 o7 g2 Z* ^
set shape "person"# E  C: |% K9 q/ a
setxy random-xcor random-ycor
1 u$ L. D) ~" [) Dset trade-record-one []/ F/ _: @1 L* Q' ^' i% D

) S$ Y" w# ]( V/ nset trade-record-all n-values people [(list (? + 1) 0 0)] , @, d  P$ P4 L( D- i7 X& r) K$ c

: J& D. R. v! r1 g7 c; Y1 @2 W8 Yset trade-record-current []5 v% Z& s9 v* |, A7 ^
set credibility-receive []. Y' b$ R) F8 J8 i& t; l; H
set local-reputation 0.5$ l: S3 C$ }% M% W/ v$ T9 V
set neighbor-total 0  G. y+ c% \2 W3 m- [# o+ t
set trade-times-total 0" f) v1 m  B5 _% E- b& V6 ~
set trade-money-total 0
8 e5 Y" V, a3 J! Kset customer nobody- G' R3 O' T5 }; F6 @7 H7 b9 E
set credibility-all n-values people [creat-credibility]- x) ?+ X3 u7 U5 [
set credibility n-values people [-1]
, L& F3 W- U/ R3 ]; {5 vget-color  v" x( y- m% w7 T' s

- r2 h1 T0 e0 ]( j9 wend- E. T& r+ Q. N1 Y1 |( P
- I' V  n0 v' m2 z$ F
to-report creat-credibility, g" l  y. |* R7 v0 E- y
report n-values people [0.5]
% }2 `, s$ I. E) ^/ ~7 r6 gend6 W  y: V  X( {" A  P& e6 z8 H

) w1 K7 h# L& b/ w* lto setup-plots
% {8 @. m! ^" ~/ E( W9 e# r
8 C. i  e* t7 {& N. X9 xset xmax 30
0 o. F) Y2 |2 s, Y/ _! U
) N3 G: K8 I  S$ z8 E
set ymax 1.0

4 k0 K8 j0 F: i0 L
$ P1 K! Q* j: F* Mclear-all-plots

/ @- ?1 t* e7 Z9 S; F# A4 z4 u+ m
: b6 L; B3 h5 z2 `% ]# w; G6 x1 `setup-plot1
6 Y( i# D( ~! n! A# z7 s  J( j

! s( y) j1 [+ l0 `3 Lsetup-plot2
9 s' u' b0 X" Q/ C2 [% C
* v( W- e# K4 E  F
setup-plot3

) \+ r; B& T+ i2 Gend2 `3 @0 R, `& |8 M" t+ j3 b
1 @. L2 d2 X6 L
;;run time procedures
  T% `. d! p/ k0 T8 f) Z9 w7 P( P7 z1 U# p) c
to go
2 x$ e& ?& w9 I. o
# k. Z9 N( k8 x8 Dask turtles [do-business]
- t4 ?0 j. |9 g  \/ k1 T
end
" T/ h5 d9 p$ m+ F7 R# Y- R4 E+ E1 a% T6 `
to do-business * b; e; ^1 j3 P

3 A, t& s9 V$ q. a
% B# T* b" j) B, O& {- L5 Mrt random 360
  m- o7 x; Y0 E/ n

$ U6 O+ I1 z' h& j  ^! {; gfd 1
9 ?* Y; d9 r" \2 M/ k8 |" [4 J; f

2 e: Q/ \9 \" P; _/ F. x7 `2 {ifelse(other turtles-here != nobody)[
" U( J7 G! y' k
8 c5 h. u: [6 S) ?) M) Q& {
set customer one-of other turtles-here
: Z9 T3 N+ {; a5 _- _) h

! Q/ g. |2 H9 Q7 y2 }& Z6 ~3 G9 U;; set [customer] of customer myself
, Q6 D3 z! u3 A

% ]# {0 c+ Q/ j5 Lset [trade-record-one] of self item (([who] of customer) - 1)4 I+ G& @8 E' w0 ]  T& f  K
[trade-record-all]of self
& ?8 X2 W( P. j' z0 C3 s7 _0 F. @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( A' }8 B5 E- [1 V) g7 F. P& h  K( ?2 Y# X1 c3 o
set [trade-record-one] of customer item (([who] of self) - 1)+ k& c8 O5 G  A# s8 F9 f; a
[trade-record-all]of customer
' Q. d! C/ U. f9 m

7 g& d/ G5 |# Y) \  ^) \set [trade-record-one-len] of self length [trade-record-one] of self
9 o8 ~2 h2 s' ]# B4 e
' _! A9 i- |9 @
set trade-record-current( list (timer) (random money-upper-limit))

! w* V0 B9 J+ \0 s+ \# s
  K! c2 d* J1 @8 fask self [do-trust]
/ Z+ w8 Q$ X4 }4 Z6 `% [;;
先求ij的信任度# M( }2 c: n3 ?- A) @9 L; m$ Z

" R* Y8 r. p6 n& o! bif ([trust-ok] of self): f4 g. A: |; A! |8 ~
;;
根据ij的信任度来决定是否与j进行交易[
& `/ d$ d; e+ I) H9 hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. @; `, S. F9 z% e( `) q% T1 I4 f! {, z( J6 p
[
8 K. A( f5 H# A, }

7 F6 s6 b- k: f$ i* y9 Kdo-trade
/ M+ z1 v7 \; ]% ^8 O

  B# p# o; d/ E6 W( V# rupdate-credibility-ijl

/ r( O$ O4 Q' j' J$ F: t
8 m/ S* [4 A) `* b: F; yupdate-credibility-list
- J! L: V/ T( R, e% C2 V2 P
+ |# r3 s0 N: F! z/ S+ b9 o6 B

# g/ b6 V( i) `$ supdate-global-reputation-list

# ?' ]8 q! c9 B3 [. z" L  g$ f3 ?0 p2 r( g
poll-class

) X8 x  n. B0 P, Z" Z8 l7 }0 P1 m7 ~( }! a( n) o3 z) H: a1 C
get-color
9 U6 M+ W8 v% a5 C8 E3 ?7 m0 z) W
. J0 P# o3 I" i! y$ G
]]( O' U& @% `! s

( a  F8 @2 ^7 G1 R;;
如果所得的信任度满足条件,则进行交易
+ E8 e$ ?  q# |
& Y" g- [# o: {4 h* R[
# Z  i) X+ u) N% M5 }7 T
+ k  C' D- C$ }3 ~' m4 S3 \0 S7 r
rt random 360

8 Y, _4 s. \) ~: @1 o+ S$ l+ I% o+ R" w4 W% o
fd 1

7 B  v. o2 g- T- f# Y, ~
$ ]7 O8 h% r8 u$ y. o]
- _5 N6 o  |9 D; p
/ T- n" x( Y. y8 d# I$ s# L
end

, e* m9 q. I7 O8 s/ g% }" k
: b/ z7 G3 `# ~; `3 k- M$ c) nto do-trust 9 e* t/ H' _: E% T6 r  g. I% a+ l
set trust-ok False& |# T. L( o8 c6 y5 g: E
& a* L7 R' U2 E2 F6 K0 K+ c& e

" |7 b* K5 P3 Plet max-trade-times 0' c. |1 Q9 P) [, Z; E7 P- c6 `! o$ B0 c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& Q6 }; c: t( b- i8 ]
let max-trade-money 0/ z% E5 u& h8 u, O/ ]; f4 Q+ O4 ]& ]
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 a* c# @& {1 t9 Y% U/ A4 N5 ?" R
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- f/ o5 a* ?' @/ N/ r4 p& N/ R8 `5 n+ g0 `& ?
% T- p4 B  z4 {6 L) K; G! I& _, c
get-global-proportion1 U; `; }9 C# {. O, b3 b
let trust-value
0 q9 e, e) S- ulocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
+ \3 d9 s" ?/ ]
if(trust-value > trade-trust-value)
4 a0 g& d9 _" g4 A( @8 e[set trust-ok true]( G& Z- Z& N% w( |6 P! O7 v( l6 x
end: ]) P5 ^) T2 f* i

  u+ R# Y, M+ n: X5 |to get-global-proportion
- p( U% |7 t! lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( `) S' b, V' p[set global-proportion 0]
: }$ d' a3 w/ |+ F% Q! m[let i 0
1 W+ C- f; X! }+ Vlet sum-money 04 i) i3 O$ [$ N0 h3 C% K' o
while[ i < people]0 [& N9 ^! v2 v+ ^) U9 E; d
[
# V; H/ ?: ]3 T1 p: ]if( length (item i$ |4 T6 a2 a: U2 T' Z& E6 q
[trade-record-all] of customer) > 3 )

% b3 j8 u/ h+ ]# e[; j5 j. m/ R% @4 I/ F
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; n: r3 i. U; K6 u  q]
! E; Z3 c, d- h) [# T8 \$ Q8 Q' M]
9 t3 I% K. u$ U- d) _" Zlet j 0$ Q0 D# K2 G9 h* s; ~" b" K
let note 0  _3 ~; }4 c4 W2 _, B; m4 \4 B2 n2 _
while[ j < people]
$ {7 X# ~5 b; V' ^% I; B- \( y" Q[
3 W/ s3 }- D/ i7 Iif( length (item i# A0 K& b! F% q# y. l2 x- `$ i
[trade-record-all] of customer) > 3 )
! |0 H$ n8 O# o& Q' L, o7 S
[; d7 s4 S/ F( ?
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ s3 Y3 g; D  f" p8 p3 h$ t! w2 q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# ?8 B" s6 c' L% s9 A[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; _* y  C6 w, M: J( R  R% k; Z]+ S+ V; y0 E. e* F; I! e
]
. e4 Y) H; f/ [! V  Dset global-proportion note, U% i( Y) m1 x& a! e- y. b
]$ V5 S5 Y( x2 C+ i
end
. p+ D2 _$ w8 C
) j6 v( J8 }6 X  `8 A3 gto do-trade9 v" @2 V  j  a) p5 g% _0 j+ U! g
;;
这个过程实际上是给双方作出评价的过程
& ~+ \& i* Y8 E! A3 Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 m3 [# o3 C) q& ^* z7 Z! Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 D6 C" }( ~. s5 f; `( N9 ~
set trade-record-current lput(timer) trade-record-current
3 z! F1 P8 t, J3 r; ~;;
评价时间2 k4 Y" a1 J; r/ G
ask myself [5 \! Q. m3 h* q& I
update-local-reputation
7 X- ?9 O  X. qset trade-record-current lput([local-reputation] of myself) trade-record-current
( M2 l3 n2 K) b7 G: d, X/ P]
# R8 ~4 S( ~* Zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  |- D4 {# [! q;;
将此次交易的记录加入到trade-record-one
% k8 p/ X# K$ bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 @) o) c4 o4 S7 [7 ?9 W: R6 R4 }let note (item 2 trade-record-current )9 D" s; a# Y; `* B5 I6 b4 W
set trade-record-current/ Y( q$ H0 w- N. V
(replace-item 2 trade-record-current (item 3 trade-record-current))

" n4 E" A% A3 f. h8 u/ c& H  ^set trade-record-current+ O3 q6 F( r, D  D
(replace-item 3 trade-record-current note)
0 i4 q& r9 k3 t9 S4 S5 }
1 s# U# |6 @* i7 L

2 ]" s: [* Z# b% l; gask customer [
2 q1 S" [) A! {: R' |- _update-local-reputation
7 n9 }' {8 O  m$ _* u8 e+ G6 R* uset trade-record-current; _; e  O" {6 Z0 i; w
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 p" M( U/ {! }]) L% T% L: i# a) ?# V

0 j' g! @9 f/ ]5 |: e, w

6 c5 _5 ~) N$ c- y" K* K8 Lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 V. N* N* o) `% \8 U: v

/ o- K. X# l4 @, Q" rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) j0 ]. u# F  O5 r6 n! S4 `
;;
将此次交易的记录加入到customertrade-record-all% _5 N/ a1 ?2 c; S2 |
end
( n5 n$ G* q- q1 r8 v
) u/ X; L! U& H4 B, vto update-local-reputation
) i! a7 E. S- D! fset [trade-record-one-len] of myself length [trade-record-one] of myself. b8 o. E4 z2 r& H
7 U! ~$ u+ J$ ]' ~* `6 o
# P* M3 l9 U0 H  @+ Z7 W9 l
;;if [trade-record-one-len] of myself > 3
7 ~4 h3 O* g$ M( x- k, K) O" v
update-neighbor-total  h" v0 R5 ^* h: F# D  @  Y
;;
更新邻居节点的数目,在此进行" R( Z# V9 g7 j& N) i! @0 f1 J: ?) ~
let i 3
; |1 W( |6 a+ olet sum-time 09 V6 b( Z3 y! a' e. }
while[i < [trade-record-one-len] of myself]
4 T1 B) ^0 S' W4 G; O2 J8 P! m[
2 j+ [# ~7 ?9 D4 |% M5 s8 Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- |7 z! W2 ~. H: R, E9 K% }. e
set i
9 E* H' [  m$ [6 ?. k( i + 1)

/ e5 `9 ^8 q! l3 N+ u  r]
- M7 n8 T# A* B/ d( Y* Zlet j 3
2 a; y' h2 D" Flet sum-money 0* n9 h% v  i) x7 N; S
while[j < [trade-record-one-len] of myself]# g" k2 k5 g8 h7 l# l& |5 \! e+ h
[
1 c" p: ?, ~0 n# r/ y! 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)
5 c" G; p7 a: S) R1 c7 Jset j$ t! X8 U( R/ ?6 G
( j + 1)

, A+ A6 _2 j. [( t$ H]
# x5 h* Q$ F4 l/ N; _let k 3
5 M8 r% g3 T4 Jlet power 0& {; }# n9 R; Z2 C" K. ]
let local 0
# B* S- {1 D7 v. v1 [& r% {while [k <[trade-record-one-len] of myself]
- z5 e) ]0 Q1 i- Q[4 I  h& d, H9 ~4 h9 w0 a7 L/ w5 {
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)
+ Z0 g# Q: M6 i4 s: ?& uset k (k + 1)
+ x; [6 I( s8 `: w]
; I7 v% y9 T" C8 l6 X2 Hset [local-reputation] of myself (local)
1 d# T. d! M% n  u/ H- v6 Yend) J2 G6 s' |) y2 `1 |, p

3 D" {, E( w- D% {2 @8 K3 l! G7 }to update-neighbor-total- ?: _; U1 t0 e" |+ Z
  Z2 A/ S' G5 ~/ q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 X; C! u- S) y/ _

- [) R6 o- Y2 M, Y# C" o
' t7 S# E1 S7 B% m; e2 d6 p
end7 L: L: |) i4 S: R
' B( o2 R. `6 M" F# d$ U+ f
to update-credibility-ijl
) Q# n, y; y9 L* y8 o/ v! |
3 J) J% w1 I( A) G, f2 R;;
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。
6 c6 z- q3 U2 flet l 0% A+ Y: k$ X$ d8 g+ E  D& D
while[ l < people ]
" M8 W4 y: }8 u/ e% p;;
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
' X! R. e5 {- n+ Y0 Y- k0 t[9 z' g2 e2 T; M, `
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& w& n2 |6 S& x! f7 S( g3 s1 Nif (trade-record-one-j-l-len > 3)
5 P. u8 {- o7 ?( Y% P[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
- r' i$ W; U: ilet i 3- u! h) O/ |5 X
let sum-time 0
  ]& l6 _) u, j. r$ B% wwhile[i < trade-record-one-len]
% ~% \6 n9 B6 w8 a- h[
* s% F# F4 }/ m$ ~. o7 wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ G9 I. D& b- k* U2 g/ H
set i7 Y2 J, s+ i' u* F6 i/ U9 w
( i + 1)

. X; g6 z) z2 j0 U" F]0 m3 W7 [' \. E, u  ^$ }9 A2 [" T
let credibility-i-j-l 0- x4 K, l- V' Q# s- V
;;i
评价(jjl的评价)3 _3 {9 G3 U: a) p# l" H" E8 T
let j 36 N. t2 Y; k$ O( c8 J
let k 4. `: @+ W0 W" y* D
while[j < trade-record-one-len]
" y6 ?: F/ q! V% y, @, c5 d- q/ `$ t[4 M9 G5 E' a8 F# T$ Z0 a0 ]
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. l4 {2 H) X, j7 F; u* a8 o  S
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)
5 o" G( X4 d/ W/ J' @5 e1 uset j# F5 n' p% U! w- d- q
( j + 1)
6 L2 |# c$ t9 @% G  r1 k9 A& v# z! V
]3 n! U& Y+ |, w
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 ))
; T: _2 _) J7 L0 X1 n: q: R% ^6 x2 O% U' [8 ^

* A0 |+ f. a( Hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 _  N( L# J, r3 T;;
及时更新il的评价质量的评价
% M8 C5 A+ h) i7 l0 f. g' G- ~/ ]set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: a; o% z, ^4 e4 q- T! x
set l (l + 1)
9 T8 v5 I  `5 n! \# C# V1 w  g4 F! @]
8 ~4 s( K( ^% pend
' L0 E" Q* q. L1 C
4 {5 s; l- ?3 |& {. c6 yto update-credibility-list) }5 q1 R6 T6 |" U7 z) Z
let i 0
' _" e) E2 \: w8 _' ^while[i < people]
) I* @. v; Z' W- ]: j% V  a[
2 m7 F+ c9 s2 s$ O- Blet j 0, ^; P; ?7 H0 [* l# d
let note 0: H' f: i6 R' `8 [7 M' Q& Z0 d
let k 0! L) y( i& C1 @
;;
计作出过评价的邻居节点的数目; G: J/ _9 [% s. S$ x
while[j < people]
0 Z: f+ s: E9 q1 s6 K# A[
, V& r. M/ f$ x: ?8 W0 Zif (item j( [credibility] of turtle (i + 1)) != -1)/ g" r3 d) L6 Y; q
;;
判断是否给本turtle的评价质量做出过评价的节点, o0 ^$ }' @3 q0 {( ?: X
[set note (note + item j ([credibility]of turtle (i + 1)))7 q: w8 p* p3 k5 D+ m# N- x
;;*(exp (-(people - 2)))/(people - 2))]
, V* T- S4 J' H, Q# q& J' R+ t
set k (k + 1)0 r. l& ^1 v+ Y) o9 y
]
( |- ~8 P& z( Q& R' W$ kset j (j + 1)
' n# M  |9 \1 n/ J1 F" i]1 K$ F1 V: b& ^0 Y# O3 i
set note (note *(exp (- (1 / k)))/ k)4 S8 e8 H$ m4 r
set credibility-list (replace-item i credibility-list note): ^9 E4 ^, H2 \. m: f
set i (i + 1)
# \/ a( E7 ?: z7 Y6 U. m7 B4 Q]
8 ], d& K2 _9 G% i9 l: G9 }end
5 |5 f" o! m* q1 Q7 s
* P3 u$ X. H4 ^! N) fto update-global-reputation-list2 H3 a# V: Z0 y
let j 0
# \8 n; g+ V7 I) {8 D3 n; D* _while[j < people]( O7 ~! t! A* N0 P. f% @, L
[
& k/ q% e2 N. N5 p5 a' S- @let new 0
0 R0 j1 N$ G) N9 d" j;;
暂存新的一个全局声誉
3 _% Z. R; n/ ^+ x. M  y/ _let i 0
) ?. f9 j0 }9 Nlet sum-money 0) m- L( b( d' g$ ?- h# a/ t4 @* D
let credibility-money 0
1 {% O) j3 c9 c+ ?9 ~& a. w: h1 Z& jwhile [i < people]' E- `" F' F& T' ]0 }& x
[
# [9 Y7 S) H# N4 U) g  oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 k+ V* f4 }0 n$ W$ J
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 u; I7 `& r" S/ I9 z1 b
set i (i + 1)
! F* ^% x+ `" e7 g! w6 O]
8 M: l% X7 J! O4 c5 T8 ~7 Hlet k 0
# g: e- c* E- p$ |3 \6 w. t1 Tlet new1 0
% S5 I( Z8 |. l1 _1 B" ~7 l) cwhile [k < people]& H: D; k6 O+ q$ R
[; ^4 T' j1 ?3 t+ o
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)
: S: x! B6 i0 D0 A. nset k (k + 1)
+ j: g  E" A* J% u, Y]4 y6 y$ }+ C5 q; {6 p4 f" [
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : |7 ~9 z# T& `# D; X
set global-reputation-list (replace-item j global-reputation-list new)4 U) Z2 _/ q7 c2 \
set j (j + 1)# U4 S; T8 O+ w: h7 H  W
]$ g2 v( `' `/ O+ n+ A! w) z
end
5 s6 g! f' t& T# ~' B% c1 `
+ L6 A& V6 D$ j, A! h4 D% }- ^; e* p+ ?. D  f, o# D- e: p- r
) n$ s1 _6 ?/ X7 m9 ~/ E
to get-color% y5 ^& D( m/ V
; X( G. |( D  \6 q1 F7 m. V
set color blue

, y* L8 `3 s" bend% |. u9 E; I& V1 C4 d) r+ ?# E# ~
9 y( L7 M% H0 A: H/ ~8 Q0 Y; w
to poll-class
' a' e" j" ^/ }& u& zend
( v7 f: U$ N7 C/ e9 T& F% P. D8 u! y: B( ]5 c! @
to setup-plot16 |/ U- l1 C! W! }2 i/ f9 H
# W5 C- q* c, c8 r% x
set-current-plot "Trends-of-Local-reputation"

5 T8 M$ M  O0 q, K0 H2 {! }% \3 ~: `% c1 i
set-plot-x-range 0 xmax
& @7 B3 f( s$ f5 x

! D( R* {& J  Z  U" N- Vset-plot-y-range 0.0 ymax
* d) o8 G+ I( [0 g
end
; O0 Y4 x% p( ~6 v' d+ A* |1 ?% P: Z, m8 y) S
to setup-plot2
" ?; \( A/ C9 g! R" I% b
  q: G6 x0 ^! |) mset-current-plot "Trends-of-global-reputation"

9 c2 P1 ]) V- i& E) Q
: e5 y- @, V; M5 m$ O. q) lset-plot-x-range 0 xmax
3 J- K! j9 L+ F
4 M! b" Z( m( G4 ~4 D  r2 C9 W( E
set-plot-y-range 0.0 ymax
; s9 y3 N' R- [
end' v: S4 s1 [5 Z$ \3 U; b/ Y

. C; R7 c) k$ y% y" }to setup-plot3( k$ K' e; J% h+ \4 f# R. T3 k

' Q  ?0 j2 o+ f' Xset-current-plot "Trends-of-credibility"

3 O( S* f+ c4 O6 X' j; d1 y' V6 F) J
set-plot-x-range 0 xmax

# M1 H- T: s) @1 K: F' R
! {, e- `- q5 l3 p/ Bset-plot-y-range 0.0 ymax
+ }, A! z0 X1 {4 W
end
; C/ w* ~& ?2 S- ]* l# z8 j8 |7 X& d) q7 a7 u$ a1 y- f& O/ K
to do-plots8 ?* R6 o# {- T4 o5 U* s' Q
set-current-plot "Trends-of-Local-reputation"' i' O/ S) M7 F" T
set-current-plot-pen "Honest service"
" W3 O9 x; @+ E2 y) W6 z" kend/ N7 i/ n' V0 ?- T! @7 M! D

: h( W; z7 |. r* u. F- h6 m[ 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.
5 Q# R) g# e' y3 y
; j! w9 P1 M# c+ `; O* B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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