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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:
/ _  Q# A' t9 |" `9 r# Q4 s, Yto do-business
3 a6 U' B1 N& q' m: x8 H$ l- P" r rt random 360; N8 c" F* x4 M/ c* w
fd 1
1 v. n: @5 i- A# {, a' W ifelse(other turtles-here != nobody)[3 U' }! i8 \0 i8 ^& w
   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 E) r  h2 x$ B9 H   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 D& l+ ~5 u8 o% b
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. n, h6 ]: V1 c4 y
   set [trade-record-one-len] of self length [trade-record-one] of self
' w' A( o4 t& T: C! q! ]8 C   set trade-record-current( list (timer) (random money-upper-limit))
; Z. e* _! T* [' w; {$ W/ n" l& t# G8 Z: l: V/ k) }7 E
问题的提示如下:4 e5 a  h+ B8 S/ f5 ?) D$ o1 U

4 Z% k! I& w+ _3 werror while turtle 50 running OF in procedure DO-BUSINESS
' G/ Q: f2 N; C7 t4 S. W8 L  called by procedure GO; N* |/ F9 H9 O6 H
OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 M: h1 u% h4 |9 E7 q5 W
(halted running of go)7 t6 _3 [) {2 M: m, p6 o+ S

/ l! L0 {" a7 \& k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~~9 ~6 S2 {* K1 v, _( c
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
" c6 `" l7 P9 d) x  a# t  _5 Eglobals[
+ W1 b8 F8 y6 ?+ P! x# Ixmax
9 [1 M2 d5 g6 r  N6 q6 N. L* tymax
& h+ H# r# W( _) S% sglobal-reputation-list
4 W% y/ V, X: ^# G$ l6 ~' {8 J0 n# c5 o! |
;;
每一个turtle的全局声誉都存在此LIST3 t/ s( Q  ]8 {% l. W! o8 G
credibility-list7 D  k$ o( D  L6 p. H% g' d
;;
每一个turtle的评价可信度
7 ~" P8 ?3 ~" y9 D3 R5 g) `) n, R1 ehonest-service* N6 M! o' N% s' G
unhonest-service( a1 G- S) @& ^, Y# I  L) A
oscillation% H. @9 t2 A0 L0 W, `
rand-dynamic
' P- l0 I" a/ b]
, W2 s/ j/ B) n( F
" Z; u' c- c* B" z) k' t. Sturtles-own[) X, k/ E. F4 n. U  c
trade-record-all& V/ g! `' o- b+ j. f# h. F) s; Q0 o! W
;;a list of lists,
trade-record-one组成
; Z# v. h: t, strade-record-one
/ S6 F/ W# J9 q+ I: I8 b;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& R$ [- t, `! S4 p- O! P

7 M6 P9 [7 p$ E! W9 z, o- ~;;[
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]]+ c8 c& r. F! t' h, E" M
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]
# n4 U* N9 U0 v8 x+ j2 ^( Scredibility-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
9 {- a9 h  h, N5 O) {* F! Gneighbor-total
# o& ~, a8 t2 {0 `% Q;;
记录该turtle的邻居节点的数目
7 d2 Q& F3 @& V# q: {trade-time6 j0 M2 p+ {/ D+ E* x# w: W
;;
当前发生交易的turtle的交易时间; _, p0 s9 U  M! `3 Z4 l
appraise-give& X! Z# ^  |. J* A; J
;;
当前发生交易时给出的评价
4 J. ]" Y5 Z" c6 cappraise-receive
& ?# T( O, a# k- S: l- N3 W' w;;
当前发生交易时收到的评价& |' z# Q/ Q$ H2 x) \& V. D
appraise-time
" b- ]) Q" Q, Z" ^% z;;
当前发生交易时的评价时间0 J2 ~8 E, b- C* p, }( e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
. C+ d& T2 M# e/ p! Strade-times-total
. m* q" R( a( j( r  l6 E;;
与当前turtle的交易总次数! D: d1 S; E9 G- X/ X4 O% p7 w
trade-money-total7 d( L1 G; w) k, X8 ?
;;
与当前turtle的交易总金额
5 v8 F" y" @5 |! z; b- xlocal-reputation
8 ~2 \! x$ b# z4 L) m  e- `global-reputation# f6 H' K! ^" ~4 v8 _
credibility
( M% U" z" l1 X" [) c; R" ^9 t8 o$ P;;
评价可信度,每次交易后都需要更新$ N3 S7 ^* b* b  s5 N( N/ c
credibility-all/ H/ P; _' J8 a. C9 F
;;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
% y" J. U& x1 ~9 x' d0 Q: n3 ^+ g* ^9 J! E* N
;;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
8 p1 V3 T# ?- \) E, Jcredibility-one9 Q! Q8 G0 O4 E
;;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  V4 W, P  B. Q0 ~# j, b; j9 z
global-proportion( G- X5 N* ]9 _6 g
customer' F3 `) `' C! L+ B+ Z& K! ^
customer-no! p( _8 w5 }: u1 s, e; I
trust-ok
, Z. t. i" W( v6 htrade-record-one-len;;trade-record-one的长度
; p$ s, A8 [4 M]
* M0 q* K1 u4 s: g( z$ |5 v6 F2 R: z" }1 }, u
;;setup procedure
' c0 E: t5 n' Y& \/ f: ^  e: P8 a6 o/ z" V6 ^" P
to setup
3 p5 z" M! `+ R7 x; D+ V' \9 o
5 u( u( d& R, ^1 s- X$ [8 Eca
# t+ U  V3 G% J! L5 O8 \
# Q+ v! {, X# g' P
initialize-settings

1 K7 v1 N7 m$ _9 s7 l+ Y
1 S) ]  c8 o" P+ t8 X0 y0 e4 x( n2 Mcrt people [setup-turtles]

& h8 {3 ^9 K# h" p) s/ A% r' d- i( K
4 t- i* y* n: e2 O5 b# Y$ vreset-timer
9 D8 R8 f9 G# \. I  J: v2 t1 F

* p- z6 h2 |9 Opoll-class

( o4 ^' f0 b5 i7 w6 c
' B3 T, g" r' b7 fsetup-plots
% B" s0 h" l8 @* m7 E- J7 ]9 m9 r

( C, L0 \, B) w) Zdo-plots
; M3 B* [" K7 q3 i2 t' w$ Y$ W7 m
end. J& q9 `6 B3 b: N& B+ k; g7 u3 q7 z) m

3 A; z& ~) E7 B: i' Nto initialize-settings8 x8 S* \0 i) B( y4 K1 F
- _! Z; h$ u" z1 y: C& l
set global-reputation-list []

7 {! c5 ]/ j/ c# W' u9 d
$ @% G! R$ R" p' Wset credibility-list n-values people [0.5]
9 u# l  S6 a9 |! k- A- L6 B; V/ M
0 O! j$ Z- `/ h7 n" l
set honest-service 0

2 Z( U  p* r' d7 P% V- o9 w7 Z3 }0 i& C# b( j# }/ \" F
set unhonest-service 0
. K" F8 X4 T" L& p, Q
9 x1 l# d, e. a; k, t
set oscillation 0

3 B2 D9 G  w! Q5 m7 D, a! @8 B% K
set rand-dynamic 0
2 a9 \. A2 a: B' e5 t+ k
end5 W* ^+ S* T& O3 m
4 P9 Z. l! m' f, h9 V- V7 f4 n
to setup-turtles 1 G4 H7 ^, h; F+ b; k9 J
set shape "person"
. \  Q" S% S) x8 z' z  f9 isetxy random-xcor random-ycor" @7 R& _4 q* ]6 y, {) u) L; q
set trade-record-one []# Z7 j5 u* I& K, ^; y
: A  Y! e" g. ~0 M; J' ?  S9 a2 d
set trade-record-all n-values people [(list (? + 1) 0 0)]
- O, N2 C. k$ Y4 B# C- B2 l9 _

" y8 [) p. }2 D9 G; N. Lset trade-record-current []* W& [1 @5 U7 R% S9 b4 G9 d& P
set credibility-receive []' t$ P3 j, s. ?: x
set local-reputation 0.5' ~4 ~- ?' l# n5 w% U, b2 `
set neighbor-total 0
& |6 S  V) J2 n  \$ [7 Sset trade-times-total 07 g9 O; \6 J- U/ b) ]4 b: T/ H9 P9 G
set trade-money-total 0
; B( S( u# f0 w2 O$ p- Pset customer nobody
5 x3 w, c8 t+ u5 }" `5 D8 Gset credibility-all n-values people [creat-credibility]3 F9 d. O+ @# T4 O
set credibility n-values people [-1]" k) m  e( u$ n2 O# u$ o
get-color
' h9 v/ @. i4 {9 `: u6 u& u
/ D$ p. O+ I, h- @, R* z
end- e+ `2 q" [3 H, A# v8 V

3 g0 k2 u+ m8 k3 B& s8 fto-report creat-credibility7 }% A" q3 H# P4 I2 @, ]2 K) ?
report n-values people [0.5]3 L, n8 ]& z: L. n8 f! d/ B5 X
end  C9 l6 v' s7 s3 U$ s+ A

' O( M0 `) w; Z5 G4 @to setup-plots  M; x) y4 l4 e, s6 m1 Z
/ z! w" C. H9 L
set xmax 30
; u9 S- {" \5 u" Q; Y( H
$ Y7 e3 G4 k& z  V
set ymax 1.0

) R# q3 |2 _2 w0 ]4 d% V. o5 p$ v9 G# M% Z* Z' C6 i/ r3 q
clear-all-plots
) N2 j* Y# g( F5 L
. k- x3 `% }2 P! L
setup-plot1

% ~$ Q6 ~" p8 ^4 v/ e$ p2 Y% i* \( X5 g- J" D8 ]% O9 k2 t) i7 H
setup-plot2

7 \$ Z! B1 j  n8 H' |: {9 c9 k2 |7 x
7 W- m% N* M& F; W- \, Bsetup-plot3
$ p) A+ u: |& X6 V0 o9 Y8 z! j
end3 T3 w$ M2 u! |# g* ^% m, x
" G* M; a! w" F$ `
;;run time procedures! f/ H* n6 ], Y9 y4 W
. M* O5 r3 M- s# ~1 @% G4 Y
to go; |. K4 _/ }8 L% K! |( z
( C  B0 D) [* I! d& c" N
ask turtles [do-business]
- G# y/ S7 F1 O2 s/ ?0 x
end' b# ~. d' e; J( u  N6 ~

) f/ C5 u# C2 U# n0 sto do-business
3 @% F  U# e) H& q

( F+ D! Y% h. g( B. ~8 J/ @  _% Z! ^, ?" N- p6 K
rt random 360
; V3 u% W; }7 t6 ?
6 v" F+ Y. |/ U, K" u) |
fd 1
& P' F. X6 _' L) I7 ]
+ t6 J: U1 S! \( C0 D9 d
ifelse(other turtles-here != nobody)[
8 d; B  A8 k% }* _
2 Z& ]1 s9 x! T% S
set customer one-of other turtles-here
+ F+ W7 @+ }" F* m

0 s- k3 Z" a5 i* ], b1 I% n+ G;; set [customer] of customer myself

# r( l  q$ `* D$ q* J
+ S& _% X  Z' r+ Tset [trade-record-one] of self item (([who] of customer) - 1), H4 ]1 g' U0 J+ n
[trade-record-all]of self1 [- `! V' [( M5 c5 r- g7 s
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 F- n7 H( X7 `+ C; T/ W3 D
5 E& F; }' x6 z/ x9 |$ E
set [trade-record-one] of customer item (([who] of self) - 1)
/ Y% ~7 f# e8 j[trade-record-all]of customer
% o' L$ [" c3 }5 }  U! T# y2 ]  @- U

8 i, o8 ]/ f% }3 b" Mset [trade-record-one-len] of self length [trade-record-one] of self
4 W6 l, r* R3 V6 t
) a% R2 B( @7 q( R$ ]
set trade-record-current( list (timer) (random money-upper-limit))

! M8 F4 ?/ ^* I" e
/ U- ~- t0 a9 A( Dask self [do-trust]
, P( d1 v3 _& c- m;;
先求ij的信任度  J+ q" Y* R3 U6 q4 E3 r: g  K
# v, j5 G6 T1 a& K# ~2 u
if ([trust-ok] of self)( \- ?9 r1 J! x2 H$ o
;;
根据ij的信任度来决定是否与j进行交易[4 |9 s0 w% x. X* F
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" o7 C! s/ K# z5 V
* o1 U8 G9 B7 w9 R[
' _7 U. F3 B& K( ^4 a8 _

: c! W( e9 d# \( ^6 ado-trade

) s. O4 @* T) ~/ e/ q
' K( f; E8 Y# K" x- e$ Eupdate-credibility-ijl
# V# m0 V2 W6 E8 o
* v" z' ~. n1 g/ F
update-credibility-list
4 C" \, Q3 X% T. c  ]
9 F. }  P6 g5 |) I) R
/ h2 R& r* Y4 u
update-global-reputation-list
, _9 g  f% N' C' z: K  U

9 z8 ~5 R+ n! ]* apoll-class
! K7 H. i! j6 _( z8 H) p$ ^7 e
# u9 H  h3 O. H5 N! K6 o
get-color

( ?' L! b7 P( i/ I
# N- D+ z" d7 G# ~* R]]
8 j5 ]( M* A1 E1 u0 b: ?; r, ^' O1 Y2 ^* n* Z; A* D# G4 ^3 \
;;
如果所得的信任度满足条件,则进行交易) n( ~4 p. ?. v& l  N0 p3 i0 z

) y# |! E/ _9 R5 T) B. F" P[

$ h7 d: n+ o8 }! w9 @4 F5 W- S, b" K+ m* v3 O" v
rt random 360

; k# S5 E- t5 m" j  O0 u- N6 f9 n5 c
fd 1

! }: F! G: w' ^5 r% S; m' j
' r5 i! _8 b  P+ L" V+ M]

" W& J0 j5 B/ \6 [% m4 v/ f- |2 n1 }/ W+ F2 ^& C
end
7 [5 m- k- o3 C& j6 B

% X9 Y: l; v4 I/ r; zto do-trust ; o6 _5 {! m% T) Z0 V! X
set trust-ok False
$ V7 ~2 f; M1 x2 m; B2 d3 Y
2 b( O  ]/ e" [8 t& v4 x; f6 u

# @) ~9 Q% Y1 N' wlet max-trade-times 0
6 p% y. H2 J$ _8 e- @) Nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! }7 B! L7 `( }8 U: Z5 y) ilet max-trade-money 0
5 E7 a0 U: s9 ^7 @: k4 @foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ n* D: o/ e0 Z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" Z- z1 @8 z; Z; N* _( V: T
" `) O% g# V+ z% Q1 n3 [# l& V2 \& @$ V

8 S  w' R1 |& e0 |) ~get-global-proportion# M% M, k5 s( v/ T2 I9 i
let trust-value
' z! j1 L3 X3 p$ 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)
# S. s4 E. K4 X9 k
if(trust-value > trade-trust-value)
* ^6 `" Q( A/ h- j2 b[set trust-ok true]) t( W* g8 }) j# }% O. \- F5 S3 H2 T. }( _
end  u+ R8 ?. a. P/ W( S3 {* S% l
/ u8 y) M# T1 P) l
to get-global-proportion
; O  S3 ?6 f. b* A3 A* t5 Uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ C* l/ v" B9 W6 ~- Q
[set global-proportion 0]5 T2 I" b  M! k
[let i 0$ z/ b* v. G) u$ l  `
let sum-money 0$ h  p" j) A! E5 F5 |( @# H
while[ i < people]" h* C$ Y4 @7 h/ Z4 C/ E+ z! q
[
% s2 i# r- g- Y' V3 jif( length (item i9 W7 J. \# j' B, D, h- m
[trade-record-all] of customer) > 3 )
& U1 z$ {9 q& ?7 W3 B
[! p8 o" ?: Z5 A0 }! z2 k
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ Z5 e, w' e# O  k( u% I4 \]6 Q' \/ H* f6 {$ X5 S
]
6 s0 k. D. L3 Y( n3 g" {% @6 wlet j 0
( m. g( w# n2 r9 qlet note 0
2 [3 _( _9 t! R' P4 U5 ^  C( Y* U+ Wwhile[ j < people]4 y+ W  K3 W0 D* T7 |) d( C1 C7 ]
[# |( P; K% \& U
if( length (item i
1 T  @4 r8 F1 i- n[trade-record-all] of customer) > 3 )

1 @" Q" F3 @" P* K" S0 F) T8 Y[5 {# K% w' o7 h" F, d# o# E
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- M7 u* z0 I* d# o$ X8 q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# x7 v; h- I0 s# }# e: t8 i[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; E8 q5 A* k& Q1 J]
$ R8 {* i* c' l$ u" N8 L' E]
' d0 D2 i4 X# h0 }6 r. Q9 e8 Bset global-proportion note
: x- D& \* i" b( Y2 a& m]- i. g# Z% S0 O8 P- k  e
end
3 c  N' u* @) D6 a) e7 j6 t
6 x3 L& ^  z" y# pto do-trade
9 @, d! R& T+ M, C7 y8 R;;
这个过程实际上是给双方作出评价的过程( v. I2 x& D- `5 H" p- l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 k9 q) U! s! X1 _# cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 U7 N* K, Z. ^set trade-record-current lput(timer) trade-record-current1 v+ T7 g. J& h2 L* s
;;
评价时间: [( f' \7 c& _2 _5 @+ M1 \0 f1 o
ask myself [
8 I0 a& f1 K& W& }# c8 Iupdate-local-reputation
" [- ]# q$ ^' V, g( I! N( f: Vset trade-record-current lput([local-reputation] of myself) trade-record-current
8 v/ m# r7 a1 x; g2 L% t]6 X; L9 |6 H( X  G* V" B5 ^7 L7 Y! m
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) c$ p# {+ _- H" J3 `
;;
将此次交易的记录加入到trade-record-one3 l% d5 ~# w( d% O  n& M! ^) U# d
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 J/ J% }3 d6 @& Jlet note (item 2 trade-record-current )) l# ]( v5 u" j
set trade-record-current
# d; q" ~8 K4 y8 w* Q(replace-item 2 trade-record-current (item 3 trade-record-current))
/ M6 K4 O; E* r: |
set trade-record-current+ x  H4 \6 S: w4 f) S
(replace-item 3 trade-record-current note)
* o7 y6 @! R4 O/ g" a9 q
0 S; A- r7 Z1 D1 u8 }

* {: g6 {2 V- i. x6 o2 Zask customer [
2 [. @- q, O: k3 l0 r8 mupdate-local-reputation' l. G- r: J7 S# d* G; g- r
set trade-record-current
3 |* j+ M' i9 j& u& ~: `2 Q6 ^3 {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

7 M, j2 k3 j' G! }# ~7 C]; D( F. ~, N( d# v  H- a0 Y- G+ R
5 |/ T& w+ _" ]. ^1 n
: V& l& r9 |2 ?( B5 s1 x- @
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& T4 [5 R! i! }( K6 M  ?- `" t
# Z7 e; H, y/ f$ ?2 `  V4 K
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% h( e) s, {, c2 H* F1 k* s
;;
将此次交易的记录加入到customertrade-record-all
- }. d& r8 P* i& F' C' w9 n; O9 ^* {end1 ~% M9 H( o6 t9 J. x
; B% G, L  E1 k$ J
to update-local-reputation! @0 W/ ~0 |6 C' {) W: f
set [trade-record-one-len] of myself length [trade-record-one] of myself. s5 k- V3 b% d* |6 W# U
" y# x0 ^2 F& \; i) B# g6 ]6 {
7 d8 ?, |" a. W, n
;;if [trade-record-one-len] of myself > 3

2 ^6 H+ h+ a4 A8 S% b" i1 S' vupdate-neighbor-total
7 F0 A3 y+ i$ V* v7 i' K;;
更新邻居节点的数目,在此进行
( b: \# s; l/ g1 qlet i 3
/ U1 t0 z2 v& X4 Z4 Rlet sum-time 0# J) H9 Z7 ~  I- m
while[i < [trade-record-one-len] of myself]& f) x- }+ e- b1 p* S% }4 w) `
[, ~& ?$ D* A0 ?( D# e) z( K
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* I* C- Q2 u; @2 N/ G5 }# A3 f
set i( u4 J7 t" @/ R% U
( i + 1)
$ d* f% b- o: ~# u( _2 ]5 V3 D
]. P  |7 U( d* V* }3 g7 L; B
let j 30 |8 h  P. p: T# k4 ]
let sum-money 0* U- _4 `# p) k7 m9 I" F1 r2 p
while[j < [trade-record-one-len] of myself]/ F% ]& u9 u2 e; k. e
[- A3 U5 q8 @% G/ B5 U, P
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)% [! b$ ^  X' ^+ W/ n; ~+ C
set j: g0 ]$ `3 b7 K& m# f
( j + 1)
3 `1 f7 i3 E/ Z" S# r
]; r5 j" \  {9 [) l6 j7 [
let k 3
' ^7 R$ O, B8 m+ y, zlet power 00 O) k" c0 q" \5 W/ I, s, ~5 r$ p
let local 0
2 u7 G* Y; D# ^7 o: Y2 Uwhile [k <[trade-record-one-len] of myself]
" m& r  d6 R; x0 r7 N& u[
; l' g( A4 p9 C" C& eset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
( R( i- w* k, S- z- w! e7 X% Xset k (k + 1)
, G5 `( c- n, O8 y& @2 n8 q+ b7 w]: k" q8 \! u) l- |4 c, l
set [local-reputation] of myself (local)# }% P& k6 O* f3 V7 W3 C8 _' T
end* i$ R6 B( k: V" a

# x7 Q& s+ B' r( E4 v' mto update-neighbor-total" }7 a. z; j1 d4 Z) {0 D
( L. g4 C) U( y! r6 d, e
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# o/ z2 o- [$ v/ w9 O% m+ S
* P1 L. E: f/ }8 b* I) ~+ N; m

( T4 c3 [: o! T: n! j1 Zend
! R" k3 A8 v& r! e# |+ u# G" K& ]( j
to update-credibility-ijl + D& o% }+ s( u+ r" x! D

  x  x# Y0 o' l- D8 z;;
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。
, [; U; N( ]9 ?, t% plet l 0
; d2 M( k7 c6 {6 ?while[ l < people ]/ ]9 h; F7 Z7 \. t* [6 q
;;
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8 E' p" U& P( b2 T; S9 {8 {
[( K8 U% ^* [8 J$ Z% h$ A, F3 V
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), l7 s: c) [! s3 r% c+ \
if (trade-record-one-j-l-len > 3)' W0 x$ G# h; R% Z1 g
[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 u* D; T4 J- `/ F/ s0 G5 F+ Blet i 3+ N$ R& s4 V/ N
let sum-time 0
3 E3 Z& X- H" N# @; V. wwhile[i < trade-record-one-len]
) ?# n3 D1 f  j8 u& v[1 y0 W( L) G. W
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" b; M7 \8 V* g8 z6 T5 G
set i
$ Y9 n, [1 }. o( }: a2 D! g( i + 1)
1 d  {8 M0 V8 z  G  F' F- T
]
- g* {" l& e2 C! r. rlet credibility-i-j-l 0# C: `# G2 o: m) P/ \4 e- p, F& q4 x
;;i
评价(jjl的评价)
0 `) \6 N$ y  a4 o1 q# alet j 3% j5 P: X6 O  s( u, e" u( I
let k 4
: A* ~& P8 Z( h* T3 ?+ _while[j < trade-record-one-len]
/ d8 C9 W6 K4 F& h3 ^+ `$ F! t[
( A/ p; X% n) W8 G8 |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* S$ M3 v8 \$ \: V; [% A
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)
. U+ Q: ~/ ^: e4 nset j+ k$ a" O  ]% Q' v& N/ z5 F
( j + 1)
: Q- E" [( n" j) Q9 D( w
]+ R4 m& w6 G% q& }( o6 c
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 ))- }4 q4 q8 S# [/ A; {

* Q8 u* U2 w4 G. g- F
% P7 z5 m4 o/ r. C; t. D; v
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); u/ {2 @; H+ l/ D0 E# E
;;
及时更新il的评价质量的评价
: K9 P7 Z- ]3 |4 a- t* N% Sset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) r6 v$ ^8 i1 ?/ I
set l (l + 1)
* N# s' e' f& i0 a( V# ?]
9 o6 Z: G" q/ X/ o" Hend& K( \1 B. y! t# x' _
" b: f, M3 m( a% L
to update-credibility-list
8 s- |, p7 ~" c$ F, V3 |let i 0- ^9 g" H$ k  T* S
while[i < people]- o# b. g5 I, i* q) Y0 z5 K* _7 }
[& r5 S& d7 b) g) l$ F9 t7 X
let j 0
; T, U3 \8 s: Z3 x0 P1 s  ilet note 0
) X3 n' h  Y' y6 wlet k 04 K6 {; [! Q8 Q' G7 K& {0 g
;;
计作出过评价的邻居节点的数目
) o7 k8 i; a3 q5 @: Nwhile[j < people]) g( Q4 w5 H' Z5 I3 J+ l
[7 u% N9 V/ ~8 x. O; A: H# ?
if (item j( [credibility] of turtle (i + 1)) != -1)
& M! H% ?0 R* d" v6 J6 {/ t' G4 I9 P) |;;
判断是否给本turtle的评价质量做出过评价的节点. R9 _5 Q5 j" V1 ]/ T! q
[set note (note + item j ([credibility]of turtle (i + 1)))1 K8 B6 p' l: C' w; u4 Z7 }! `: A
;;*(exp (-(people - 2)))/(people - 2))]
1 G3 D& x/ V4 W$ k7 H  i
set k (k + 1)7 |, z% Q  T/ c3 y' q' z! r
]' c! F! R( `% |" R4 d
set j (j + 1)5 u5 C5 F5 d# R: Y. h, U% i
]
2 g3 C7 ~7 [2 P" fset note (note *(exp (- (1 / k)))/ k)
* U/ l/ A8 E5 p0 y' E+ ^set credibility-list (replace-item i credibility-list note)
5 E) X* g9 s( ]* M) |set i (i + 1)
. E% K4 l$ v8 o' I9 ?]' V  P6 v8 o. @& D4 e+ l, n
end# ]" Y5 J& h8 F! n0 @( B
) A2 D- f4 }$ O% [) j* H0 q
to update-global-reputation-list: p- A( O" F7 W; }
let j 0
# M. L3 H7 ~' h( nwhile[j < people]( h( t3 ^2 n5 P, k% A8 {: i6 d
[0 L  ?9 [* v# M
let new 0
# L$ B2 u/ i0 g; a5 |;;
暂存新的一个全局声誉
& L/ w0 l6 S* V+ clet i 09 z' B9 i* g4 z" k9 Y* O* L7 I
let sum-money 0
( \6 o8 K$ L# q: }0 a  a! Slet credibility-money 0, K& }1 Z! z5 m$ \
while [i < people]
2 x. ], P4 v: c; D) L8 Z[1 K8 _' t, |* B( z; R; I+ L
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 X0 j  Y1 ?( b# p' kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); G- K3 k: o; f* R% n0 a4 Q
set i (i + 1)
3 W& D; F' q" []! C1 g9 o/ e3 O: i3 Q. h
let k 0
  ]/ ?! F+ [: v9 k8 b, V+ ilet new1 0" J5 a; ?. b0 W) h& Y
while [k < people]0 _) a( _) a: G/ O- K) G: a" j
[, q& D  ^( [+ E. `( M7 Q
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)
9 \( \. ]- \& Gset k (k + 1)
, |" {. i  K( E* W( e]" E  b, |- O; J9 Y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: O! g7 Z1 S- S! Z8 Qset global-reputation-list (replace-item j global-reputation-list new)- t3 Q2 y- X* k+ p0 D
set j (j + 1)
: |" ~, Y7 X4 W+ @" v; J' b' ~]! ?* m/ c8 _. s; c5 v; W' u
end1 w0 o( E8 S8 U
6 Y9 L+ }& K, _" g3 B7 Z% M, t
  j/ M9 d" U, @1 X
( y9 y5 J6 ~8 e, f
to get-color+ k) R; ?9 d# }$ z

% k: E: L# j' }8 g- M, G9 Pset color blue

* b+ H0 ^/ }( E! P4 Jend* j: Y: K7 [6 G. s4 y
/ F% G# ?) y6 j. i4 p' H& g
to poll-class
+ V  n! I- Y! k+ \8 J2 ^$ X( w# Cend
) l) j; o. e6 s' K
% E% L! T& ~" Y" Y% |to setup-plot1
( C& X- e: V, R  g6 d7 a7 C; u: t
0 H' C1 M% y( L9 Vset-current-plot "Trends-of-Local-reputation"
# Z) G# q2 c7 ^/ e

" ]+ s9 Y5 l- F0 \! T: ^% iset-plot-x-range 0 xmax

2 T- I& I3 f* T% N) y: R
/ x4 u- q  s% l/ v9 q3 \set-plot-y-range 0.0 ymax

# X6 Q/ i9 K  Q" Z; u4 `5 Iend- L6 Y0 z7 M9 M
% N+ |4 r" E6 L3 M9 m( Y: G
to setup-plot2
. x  B0 @2 b% u/ p! S7 n6 G" J" ]0 O1 t
set-current-plot "Trends-of-global-reputation"
* K- s% U& H4 Y+ P# @: C+ [9 K. J
7 l! M" C& j, P8 M
set-plot-x-range 0 xmax
1 w  a1 [' C8 |# a9 K; O8 W* [
8 B; Z8 J0 s! [) t! n; y0 ~1 h# b
set-plot-y-range 0.0 ymax

) n5 ?; X; p9 L$ N! f/ g/ N' iend
. Y' ^, `: C( F8 J0 n6 O
6 D9 i" _9 S6 d/ `9 Y  A' Wto setup-plot3
! |* C5 D& x. n# ~# ^- ^" J: M; @2 _. U) A2 g. {! ]
set-current-plot "Trends-of-credibility"

8 b# s) r% L+ Q4 Y) k. g' w! S+ l
) T$ `) g1 q0 dset-plot-x-range 0 xmax

1 t" P$ t; ~  i4 d6 x
3 ~7 G) \. c5 d* O# X6 Gset-plot-y-range 0.0 ymax

+ N. P4 v- V  r9 N3 \end- m+ G5 H5 c8 p/ G2 z

) `1 i1 e3 A- r3 N( k1 D! o" w: Yto do-plots
  W; j' f- l) U2 A3 k6 y6 qset-current-plot "Trends-of-Local-reputation"
6 ^- J" `5 D+ G/ tset-current-plot-pen "Honest service"5 T& @. n3 d# Q- g4 H$ Z
end
0 B- k: W! \9 M- l1 i7 a
: I. h) E+ X1 J, ?' 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.
7 i- v) M; W. b# L' i$ F) W; w& a2 O3 H, X4 k5 M' W7 X7 k
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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