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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:
0 k3 O/ d. P+ R% c3 u& e) P6 T5 Uto do-business
4 r2 _) h% c4 I/ O rt random 3607 N3 |$ D! b$ x' r- l2 e4 d% `
fd 1- _, v. K% S/ l  \
ifelse(other turtles-here != nobody)[5 {& z6 c1 ?, U: I
   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.
5 t' F* ^2 ?' G8 A   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- H2 X! {4 V6 r7 [3 x, A   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ t  i: B, l. e2 O3 d  b' ~2 K
   set [trade-record-one-len] of self length [trade-record-one] of self
: {1 B4 B  H# v5 x( w0 N   set trade-record-current( list (timer) (random money-upper-limit))
* U* z4 O% Z$ b+ f5 d6 V% }: `. P3 T4 z7 E6 |' a4 A
问题的提示如下:
/ a, y5 ^+ D; k4 a" D/ O( Z$ _* Q3 G5 h
error while turtle 50 running OF in procedure DO-BUSINESS4 K# x2 Z3 e4 O, e* H
  called by procedure GO
. w. c4 x" l+ _4 iOF expected input to be a turtle agentset or turtle but got NOBODY instead.
, o2 u$ v5 u  {/ g( ]/ f, x
(halted running of go)
% s& ]. I6 F* N  ]+ B3 C0 @) o  E" [" I2 m! S
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~~# q( o/ E* e" l; I' G- Q
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6 C, o+ Z; j! d' F/ Y, \/ t9 v
globals[& C& j9 R$ f6 H5 k0 K& @
xmax  r6 E. j) _' y
ymax2 {) w- R( o) Y0 e$ f
global-reputation-list2 [# K  U) c' j$ X. D# r3 T( `, h
: ?2 p/ e) l) P+ w- q  i
;;
每一个turtle的全局声誉都存在此LIST
6 q& _* j5 P5 g6 o7 ~credibility-list
9 o' t* E. C( b8 ^) B;;
每一个turtle的评价可信度6 B$ z3 V! K; a
honest-service6 ?' {7 f4 F/ ]& ]
unhonest-service, r( e5 u" ?$ r" n" N" |3 N: g
oscillation
" b' a) q4 Q' \rand-dynamic
- g- ?5 O. o8 P) n]+ C) d0 X  ~, D+ m

3 U- s3 a; c. l, ^1 o% S! Uturtles-own[0 C' L- _  r1 ^7 G
trade-record-all% X" U$ B# J6 J
;;a list of lists,
trade-record-one组成
/ _2 L2 N" p; m9 Ptrade-record-one$ f& J7 ~1 h; e
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; c) `3 Y/ e5 ?  |# s

) y. M. p$ O) S6 O+ 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]]) g. Z, I) i& V9 v- r' F0 c# C( `
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]
$ [& k/ y8 K: o! j( m3 M& i. Y* O1 }+ Ccredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list* o. a  G7 ~) w/ |1 |
neighbor-total
& f0 ~8 ]8 \2 z) C;;
记录该turtle的邻居节点的数目
$ c1 Z. q4 O' |trade-time2 |$ N+ g7 g% r
;;
当前发生交易的turtle的交易时间
. B4 Z7 b" m. wappraise-give
: w: t7 a& `; y& h1 l( E; B; Z;;
当前发生交易时给出的评价
$ F: A* L2 D7 q7 }appraise-receive
2 L: ^/ {3 O: n5 R& X9 M;;
当前发生交易时收到的评价% _9 H; u& j# X/ s
appraise-time
. m) s6 j' @# ?; {2 o6 ]. ^) x;;
当前发生交易时的评价时间
' h4 ]6 o. F! i  H- d# W! llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉2 r) c. R' m' f9 O; M# v" X
trade-times-total
9 W# J. \  f5 w2 i7 g;;
与当前turtle的交易总次数
0 l2 d4 l+ l* |; L9 V0 ]7 ?! ttrade-money-total# r4 S9 D1 V6 J; _% u8 O4 o5 R7 N: d
;;
与当前turtle的交易总金额
1 q) p& G9 _; a! ~2 K  Clocal-reputation
  ?9 i! j/ j' S  Y/ R5 Oglobal-reputation5 Q) Z: o  i0 g
credibility: ?0 ^, H% R; ^9 t  j  u
;;
评价可信度,每次交易后都需要更新3 `- A0 J) ]8 |
credibility-all' ~" _  B$ u  l) z7 U
;;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
4 M0 \2 i+ z, o/ Z  [
7 s  ?6 P3 C2 v9 J; J;;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
1 n. K( }+ [% e% d- Ocredibility-one
6 w0 W/ J- L6 B+ f2 L: F  V;;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
- G* G- a0 U' ^! T+ O; t8 [global-proportion9 K$ g) \2 u0 }+ o
customer
2 H8 s" ]& n: Q7 m! B+ X( Rcustomer-no7 B- |. s  _/ K6 F$ W' p/ b
trust-ok
- A( C" Y$ I, ^8 f  ~trade-record-one-len;;trade-record-one的长度
8 B( P9 f+ E9 X9 A) z) M" t]
5 B, P) U" q" f/ e) E1 V, J8 d) v* Z
, P7 H; X( @+ x* i: H;;setup procedure6 b+ N. d3 p% z/ k0 u- Z
# B2 y! j9 Y* C5 |# T* Q4 ?; D0 ?: r
to setup3 |+ y* C! {7 c; G

$ `2 R5 c6 b9 H+ P: lca
6 q. L3 J5 i9 H8 D( J
! M  ]! g+ s6 s
initialize-settings

# T0 Q7 k5 ~( N, m) Y8 A( H% ^
3 ^2 R( X* @# y5 Wcrt people [setup-turtles]
/ O6 c4 n1 t- P

8 e( M  x, [7 n/ V+ treset-timer

- Z# y- S$ K/ T
4 P5 o& n0 t6 ?8 i/ Upoll-class

7 }8 d  Y# f# g+ d4 Q# W- Z% Y- {- Y% }; {5 i& A% \
setup-plots

! L) G( a* ]3 P% P: _& ^& G  w' j. D; F: J; \
do-plots
% E+ |, \; e3 z* {, _, I6 r" ^1 m8 G
end
& t# {9 S$ A) j, i1 [! k
9 K* H2 G6 h) ^1 p+ B; V2 b& M; gto initialize-settings
* J% @4 \& S+ X  W# n2 p) B& k& F) d- A9 t
set global-reputation-list []

8 j# q$ \4 H9 v( U  }0 O5 K
( `8 W1 ^. y, ]set credibility-list n-values people [0.5]
. Z; N% E" ?. F( q4 z

' d/ [3 Z( h$ Q; `set honest-service 0
: n. ?5 m" f8 ?4 ^( _
$ Y) ~  P% W4 B% |" i
set unhonest-service 0

9 F) Z2 \8 ]) F9 f/ \/ G* b, c
4 p, e/ L% d; q( t% s. oset oscillation 0
& X+ S- N* V* g4 v
7 v6 u" |) h1 Q- F1 ^8 j
set rand-dynamic 0
6 p6 g$ X  W: n
end
8 I2 m- p- Y1 ^4 C5 k" R
5 J# c( U6 }0 F3 ^; pto setup-turtles ) `! n& L& W5 X+ T# V
set shape "person"  ?8 M- t  f# V" ~# r
setxy random-xcor random-ycor8 D# z8 x9 F! r) J) w
set trade-record-one []
; }. Q5 E. ?$ ?4 `& G/ K

- j/ W6 L9 `. @6 M9 v% W0 Lset trade-record-all n-values people [(list (? + 1) 0 0)]
1 @% [% X3 S9 P1 M/ q. z. {

& U8 }. O# X3 B0 ]) v( Cset trade-record-current []( x8 [7 ~/ @4 ]% W/ T3 M
set credibility-receive []. E1 n4 C( p! o6 \6 W' m
set local-reputation 0.59 r) X$ Y* _! J" q* R, ^
set neighbor-total 0% u& E3 N6 k( A/ m; ]! T
set trade-times-total 0
1 ?/ r1 u  z/ {) `3 ^0 K# kset trade-money-total 06 {; X, e3 A; S5 q+ k/ ~7 c+ Y
set customer nobody
- i" |) x) `. }9 E, ]& eset credibility-all n-values people [creat-credibility]
+ c+ m  u: a+ W" q2 c4 z. K: Tset credibility n-values people [-1]  U+ A7 S( ?; r" b+ r, B
get-color, B6 l4 P8 [# B! N8 D
( y/ T$ X" }3 w# P
end
; V0 Z. J% W4 x: h. ]- w
3 k4 t  Z- X* f: q+ x2 Gto-report creat-credibility5 P( E) _' o& U
report n-values people [0.5]2 c- ~/ q  c- a; O7 w, }( A
end
/ e5 ^0 p! z+ {+ W4 `1 A, q
# c, O2 P+ U/ L; d. Mto setup-plots5 U6 k2 i( P+ N6 y+ Y- J" D

" T# D8 N9 c/ x( ]2 n) T8 Vset xmax 30
' C/ m6 _! t- B+ A3 L$ C
, }6 L/ H# r2 G' x6 d
set ymax 1.0

0 r" v+ ^4 b9 i/ j3 S; D& p5 \. B( J3 s7 Z
clear-all-plots

" ?! h7 U8 p' m6 j5 D7 Y/ v5 B
+ w( k1 V% p. x" t0 |+ wsetup-plot1

+ M3 L( ?1 f# U7 ?, |- x/ g" a* ^0 d& w
setup-plot2
& }& n6 `) H; H; e! L
7 h: D# t' {& r9 L  r9 A
setup-plot3

' g9 Q* D  y' ~0 Bend
$ V% v5 Q8 _8 p/ I$ E: c- |
/ x. C# ]1 X0 S6 X$ G7 x;;run time procedures
9 _( `! y' {) F$ p
8 m. K' \+ S- G6 Zto go
4 o3 x; a2 v; |$ x8 l5 n, v/ s7 u( P: T2 e, Q7 o1 Z; g; f# S
ask turtles [do-business]
+ u, @2 O, z% h5 _- p3 g8 c  D
end
$ {1 [. @9 j6 D$ F  z
* i! S1 f/ m; t  l$ Gto do-business
8 D. [6 Z. ?3 D+ F
9 c( ]/ P$ c# u4 o

. v6 w' T6 m' r8 c* g6 F  rrt random 360

. e& U( s' _9 c' }2 @, p, T1 ]' v/ E% h$ O. m- t8 U3 D
fd 1

3 F( C# [+ O7 v9 [, \6 `; q5 ]( h7 C4 X( G- S
ifelse(other turtles-here != nobody)[

; E, k+ e1 D! G2 [' S9 S6 A$ z' ]: K/ y3 C
set customer one-of other turtles-here
# l( h# W7 x. ^# ~; d9 P& X. C
* U( n; d" j8 |2 W
;; set [customer] of customer myself

' S6 u3 {- T2 u4 y# ]! D$ ?+ f8 o5 |$ {2 G$ N( F) O
set [trade-record-one] of self item (([who] of customer) - 1)
; |: o6 n+ R! b: y[trade-record-all]of self
& u: `, F6 |2 U7 r! R1 i7 x;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ {& v6 X) T( M6 _$ E
, R$ g% ~' Y( W. J2 uset [trade-record-one] of customer item (([who] of self) - 1)
& g/ K6 X, V! f2 g1 ][trade-record-all]of customer
+ G3 u" R" q! m9 _7 h$ n; _
! U, q, x+ ?3 V, h+ `3 n2 f
set [trade-record-one-len] of self length [trade-record-one] of self
+ |) |7 L8 Q1 s) o

) \( J, @/ u! H" Fset trade-record-current( list (timer) (random money-upper-limit))
, B! N  t4 y5 Z% y+ E3 n6 g! j. N. o
$ {0 s8 U# P% q
ask self [do-trust]" b& _, E* Q4 F4 O1 K: Z* r$ a3 n
;;
先求ij的信任度
0 X( |0 s6 C! ^$ }: v7 Q  N& H1 P: q
if ([trust-ok] of self)
" }1 o/ @. M2 s$ \( L3 h;;
根据ij的信任度来决定是否与j进行交易[# O5 s7 o0 {1 M9 o
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 m+ b, i* p5 [3 ^

% r5 z% E* m" d[
" A/ I$ m4 }$ e. I6 y( c8 W+ N0 S1 ?
$ i7 h* e9 q+ s+ Q
do-trade
  H3 T& b' t; }% W* c

4 |6 D  X  G0 d: ?4 supdate-credibility-ijl
) v  N( S! S2 J2 o2 j
2 w0 {% C- W0 d/ O
update-credibility-list
( o. d) m. M4 X8 l- x, T

* Y" @  d& B) D' T: C& ^1 @
9 ~. V  m7 q7 [7 w- i: B, aupdate-global-reputation-list
* h' X% z1 O: `. f8 \6 k

' G4 n: `* V( t# w4 {7 Xpoll-class
, x# q0 p+ _! A' y6 m$ D

* N+ n, ^3 ~3 Oget-color

# q* \: c7 S' W9 J- a! T" r) O
  c- C" l6 ^! n5 j0 z: Y]]
7 V/ Q. X2 ~4 n7 ?# J4 ~* j6 k) t2 g7 o2 X
;;
如果所得的信任度满足条件,则进行交易8 q# {! u4 y) N$ u) w$ [
" b1 ~1 p6 v) i9 {4 r  [2 P
[
8 m1 f4 J, G  {+ j  y$ g
% @( h9 }' R" x* u* e0 m
rt random 360
: e. V" ^& y. o, C
5 x% n8 e8 n4 u
fd 1

0 m  v: A2 q# z) m9 G: G& d% N) u7 v
]
8 N* {; z1 ^* }' K) f# S

$ _3 Y) b" V! s# bend

& }" x0 c9 h1 |* b1 d( t- i( y5 N/ X6 [' R) V* y: x4 a4 F( {9 \+ I
to do-trust $ ^" ~! Y& c6 Z' ]' {$ p" A2 l
set trust-ok False
% S3 _( n! V* E9 [2 i1 {: @2 A6 p# @% b- H9 g9 W% R4 Q
" ]* D: H* A# }  z5 ^/ i/ N. T
let max-trade-times 0
5 [8 }( e4 b3 @foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]' v3 r" T! G4 ^6 L) O
let max-trade-money 0: |" c) H- H) ~: u/ i* u
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' ]* Q5 m0 `5 w, b& N! 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))
7 J' ]4 y  ?2 Q# u  |- j; w; D
* v0 t( g3 l% d* g: N

( u* W/ d3 Q' B  Z0 g) Zget-global-proportion4 \1 e  _/ K) t0 _% G3 y) u% m/ a
let trust-value  u# G3 V9 J$ n, j6 M
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)

1 g, o- l2 Q3 Y3 vif(trust-value > trade-trust-value)
1 T0 Z' a4 E# I  a  m8 V[set trust-ok true]
6 H. X( j* o5 q$ v3 X+ N; j! mend6 ]' v, i' i1 j& {& [( I! v
$ s. e6 z  \/ b. O7 @/ m, [
to get-global-proportion; B  y! @2 N2 h! d. y# t( C) T0 z
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: H9 ?: W! e9 ~: @' v& n[set global-proportion 0]* B. I) m  C/ x# D7 m
[let i 00 L! T9 ?! ]( n4 m
let sum-money 0
  S  z2 T+ N& ?  L! N5 d$ {while[ i < people]  P  h) F. x2 F5 k% I
[2 C  R$ k, `5 n4 Z% X; w& a
if( length (item i$ f5 M2 o) d8 I6 b! v9 l# t
[trade-record-all] of customer) > 3 )

" h- `; H7 d+ x[
$ @9 e  N) Y- U4 @1 pset sum-money (sum-money + item 2(item i [trade-record-all] of myself)), Z! ~$ J5 |* L+ o( ^7 D8 O
]  O3 e! f7 r, y* I
]
$ s/ n4 @6 O) N' c: D* W$ F8 @let j 0
" K8 ~' r' t/ u7 A5 _# c: a0 Elet note 0" S' J% J' R: m1 S' j+ H8 G5 y
while[ j < people]
' J* x8 y1 N$ D+ R  N4 [[4 t  ]7 e3 J6 L( Z8 D
if( length (item i3 H& d( ?/ ^- z' l
[trade-record-all] of customer) > 3 )
3 [! l  s* L/ m6 X  V4 _3 D
[' p8 D% p* J* P/ Z  h
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 q0 F: b8 E. K4 ]8 a
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 v. j- ?& Q+ T6 J5 f/ j* E. ?4 `# E( Q
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: B4 H0 w+ K2 [+ P. k8 C* L
]  Q( i  Y, ]) w
]
8 f6 W( H5 D1 ]- {2 c1 aset global-proportion note
: E" S. @; t% T9 W0 R3 o9 U]3 X- _( x+ s- L! E, N, M, M
end0 @2 e" J- i! l, Z* P$ G' ^
. R% o: _4 J) Z; q) E
to do-trade
2 t5 H5 X+ T. n" W;;
这个过程实际上是给双方作出评价的过程
- t2 g% Q; p; S3 F, F5 Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 L& W& [% X# @) h; M: ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ N2 F  k' o9 L. l9 |set trade-record-current lput(timer) trade-record-current
7 H) s8 t  z' Z2 m;;
评价时间5 Z$ l) Y2 R5 H9 |% }
ask myself [
* W5 P* A5 u/ a: j7 w3 Oupdate-local-reputation' Q: ?. t' X: d
set trade-record-current lput([local-reputation] of myself) trade-record-current) D- s( M# h/ R) ~" B; j
]8 {; E6 p" G- R- `5 ~4 ?  v
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ [9 c: J0 ]0 r. h) h8 W
;;
将此次交易的记录加入到trade-record-one# e) \8 L+ v+ {. c
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 c2 [0 h# W/ X$ S# }let note (item 2 trade-record-current )- S  ~7 m, Y4 \, z3 L1 O
set trade-record-current, _. w2 I2 H# [
(replace-item 2 trade-record-current (item 3 trade-record-current))

2 s1 A' [( F* t, x5 z1 x! ~7 ^set trade-record-current& K! c' t& ~0 U; F+ `4 h; H
(replace-item 3 trade-record-current note)
( U4 d9 A6 K; r% X$ k/ [- E# |6 J6 Z0 i4 S
0 ^! y3 l% B, C( ?
ask customer [
! ?! |" h7 s: x8 ~) s' fupdate-local-reputation
! T9 w7 ?7 [( Yset trade-record-current4 x: i4 q$ I" k% [. l8 w3 z
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, d( @' E) o0 W$ F9 v9 G+ s$ d6 y
]5 X5 Z' p. c) j. V
9 h$ t0 L" [& ^9 D% b2 S

. w# f. G0 p% X; mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer6 W6 r+ G: |2 D  c- z% s' ~/ b

* U2 U. s; b9 ^  N- S, e( ]set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 X1 i# E/ m& z5 b9 ^" b' v
;;
将此次交易的记录加入到customertrade-record-all
! z5 h- d, J; N9 f. H% {) Oend
7 S2 y+ W# c8 x+ X7 E: C
/ o2 F. u! r& S, b/ x3 s) }' dto update-local-reputation
, X8 d2 d2 @4 cset [trade-record-one-len] of myself length [trade-record-one] of myself
& q6 s" |1 i9 l6 t
3 c5 Q1 m' K' |3 R$ Q5 M! Q; K$ u5 {& p- H- B3 D4 {7 [
;;if [trade-record-one-len] of myself > 3
8 C  E) |. ~2 a" Q
update-neighbor-total
' q2 E) a* V7 X' U( t;;
更新邻居节点的数目,在此进行, T3 A! Q7 ]- R
let i 3
; x/ r# Z0 z, Z$ ~( x" t5 blet sum-time 0
7 n& Z" W* t* f( P- M0 b. l2 ^while[i < [trade-record-one-len] of myself]6 `  t- @( |; K/ v$ l
[  l8 Q2 Z/ N6 y6 u* s4 i
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ [6 d8 B9 q6 N' F
set i
: W3 ?& ?) a9 c& z. d& x( i + 1)

" n3 ?& L3 }' c7 _8 M8 b& Q8 Z]4 |" }2 n; a  Y3 K
let j 3% N, L% y( H1 G2 r4 N, B& j8 r
let sum-money 02 }8 f7 `; w- ?1 `2 \
while[j < [trade-record-one-len] of myself]4 t4 i6 Y! {& i! x7 |- g
[
2 u7 [; D3 _0 Y1 b5 j7 G  xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)9 @% _* M! ?, O% Q
set j
& i! s% {5 ~: p" [( j + 1)

. e, q$ O- i  j2 _) b]( v' a6 B# x# \  r3 [4 l
let k 3
7 \$ N( O, @) k$ V* _2 F- Alet power 0/ _2 C, e, F0 M
let local 0: P5 U3 r) i! H) M% k9 Y) V
while [k <[trade-record-one-len] of myself]9 s. c8 O$ ~) ~# E$ `
[0 F$ d, J4 c5 s: Q2 d! L
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) 0 f9 }/ e: S9 Z# H- Q
set k (k + 1)" ~/ Z" ]& i% s
]# _2 U  Y4 u. z0 [. e2 {
set [local-reputation] of myself (local)+ O! H5 _4 j" D; p. p2 p7 @
end, n  n: _$ |+ Q3 B) D
% @+ A$ j# A1 d/ N$ [" m
to update-neighbor-total
$ J9 L. D. i4 }' K( `3 n' R( R
6 ]; N- K5 ~, x; R, q3 C* I8 vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 H7 @6 C4 `$ d" I' m/ h
% s. `* N  n$ s
7 h5 _* f9 s5 f4 t! w) A' q& Z
end. O* W- V0 a8 ?+ e2 x

. d7 N. r. H. F) E" p0 B( o. cto update-credibility-ijl 4 y, z0 }9 C, T% C) ~. B

4 h5 T( h5 x) C$ F2 u' V;;
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。7 k2 {  V/ g2 C2 L4 |/ }! l
let l 0
+ d8 T8 R$ w8 d3 y3 W3 L+ ?while[ l < people ]2 {8 I2 b6 d& `8 X
;;
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
" X0 o4 r& p0 @) n3 t( }[
8 T& l+ f3 |# `  qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 J2 o" K. F- M$ i7 e4 i- e3 D  a# Yif (trade-record-one-j-l-len > 3)
; d% E3 ?0 p9 V[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
2 s4 g. M$ d7 I$ l5 j$ elet i 37 f. f, m  R* O0 N& j
let sum-time 06 A! P7 S/ v; c3 }* i, K6 B1 z
while[i < trade-record-one-len]5 f8 z( v: Q2 e$ c& {$ M
[
. C8 F! `+ @/ \9 ], }set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 f. D& N& q" d
set i+ N  o' U- x2 ?" x" I& G
( i + 1)

9 K9 G6 {* ?( S]
' _  V7 K. j. l, Jlet credibility-i-j-l 0
% e, W# q5 {" U;;i
评价(jjl的评价)$ q6 M' @1 T5 y8 L$ R, l2 C- p) M7 c
let j 3
& k6 L" l, X3 L' J9 R! y- ^let k 4
; g# [0 [' q" uwhile[j < trade-record-one-len]( j" J) t! ?* e0 R
[  _* Z" \$ q( i) x
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 C6 S# a6 ^# [' b4 m+ u; Z$ }8 U' x0 i
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)
7 T% u3 N1 M9 G2 p8 Yset j: w  [3 C% Q, Y  ~: ?) x
( j + 1)
- t& w  M0 J7 m$ n0 b
]5 q$ \! V5 ~  Y3 ?2 g; X2 d, u
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 v6 n. m( _# l1 M$ Y5 {

! s3 m& c1 T$ f, M; v: Z, E0 j7 i
/ c/ ^7 `& i9 T+ r# s) B
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. ~* ~  R. H& K, |;;
及时更新il的评价质量的评价
4 k3 `) [0 ?% z' uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) H# `8 `) |3 M0 R7 [2 oset l (l + 1)
3 I+ ?% T: i! I6 R]7 f5 i4 k: ^2 P; s
end" X0 h: x0 ~0 e/ F' L6 C

) W4 ~/ i$ Z* X1 |: Jto update-credibility-list
" t' }/ L, }# L- }let i 0
* V, [( o( V5 k5 u6 P* p, twhile[i < people]$ j; X5 w, Y# G1 f0 `
[% }4 x3 j7 P; f: L& }! b
let j 0
1 J+ B9 e* I7 f0 Z8 ?! P) zlet note 0: M$ ?% k3 f1 P$ s2 C+ ~. f* u2 |: g
let k 0
! Z% s  p; Z; \7 Z  z6 W5 i;;
计作出过评价的邻居节点的数目& N  Z9 e4 [' Y7 n2 @
while[j < people]
# N: o5 ^3 _4 B9 F2 f1 V9 X[! z4 _) Y# {5 l+ j; ]2 R- C
if (item j( [credibility] of turtle (i + 1)) != -1)
) _" L7 g' z4 Q  l( R;;
判断是否给本turtle的评价质量做出过评价的节点6 N% p3 U% M5 A4 _+ e0 y& Q
[set note (note + item j ([credibility]of turtle (i + 1))), G# V5 d; y3 U! b
;;*(exp (-(people - 2)))/(people - 2))]

' U5 E& d- x! z" i' c- Kset k (k + 1)) c6 Z/ Q. }: ~
]& ?4 P6 b: s; L3 P; \
set j (j + 1)' @' a- ~7 y( k# v6 R% j  X4 n
]' Y: W2 D* x. \3 Q9 e1 |% u( k( ]6 u. _# `
set note (note *(exp (- (1 / k)))/ k)# R' h& m+ X) X
set credibility-list (replace-item i credibility-list note)
  }3 q# C3 w" sset i (i + 1)
2 f; l% e/ f7 g3 G]- Z4 Q9 r: w, e# Q
end& A3 T2 }" F: \2 p. l9 V
: h2 f9 N0 x( l% u6 x
to update-global-reputation-list* N5 D: T' z4 G, t7 X
let j 0
2 A$ R0 r- U* [2 T9 Zwhile[j < people]0 i, v4 |3 Z* ~1 \1 Z
[0 N/ l  ~. p: H% x7 g+ j
let new 0% F2 V& r: E) w
;;
暂存新的一个全局声誉! s; b. s0 w( B3 u
let i 0
0 c+ V& b  q* d8 R2 clet sum-money 0
3 V6 b1 y# W! ^# R& olet credibility-money 0
* F$ p6 Q' I% l! ^2 ewhile [i < people]5 z8 J0 E9 |, u$ T/ t
[
, n: g4 v1 j! e2 ]: I* f% @' cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( P: P* b  |$ F, c) t3 uset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( `" }3 T" ^0 [. {/ A2 F$ \1 e( E
set i (i + 1)
( @/ \! p0 R: p6 j4 |6 M# K) |]
$ i" C: E% P: I1 Alet k 0
% f( ?; C( A6 ilet new1 0. d- m& \& y5 G3 L$ X
while [k < people]. i3 u1 c- Y& N( C* `3 t. R
[9 h. G! _' h! e  Z$ w
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), R: ~' w! Q( G. q
set k (k + 1)9 H5 ~; G. Z, V% T* L' N/ S
]
( s  |4 _9 @( j, @$ R. mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& O- d5 F5 \' E1 Y( Yset global-reputation-list (replace-item j global-reputation-list new)
1 x  j% n0 @% Jset j (j + 1)
  o4 V' K2 I+ d# }( ~: w; p* Y4 []
% g& e( A) D  o0 [' Mend
' v8 B+ Q* N1 X0 O& m/ M4 `  c: i! e/ ]: n
9 |- |) e/ P' B' q7 d

1 v2 t! a; }+ y( \to get-color/ S9 O; K1 t8 y: ?# m
) \; o- g( w+ Z1 k$ L7 f
set color blue

5 l& f( p- `5 ^end
; R  Y* H- s! b' Y* W
; w% G& H* e, V: q# m" ]. r! L( xto poll-class4 B2 }7 C* P( m+ B4 }
end( {4 Q4 O0 K3 _1 p1 X. _& M+ }
/ F! t9 T; X3 ^  k+ Z
to setup-plot11 z5 M# [3 u4 p- |
* y6 d" z# U2 ?' p( T. u, T
set-current-plot "Trends-of-Local-reputation"
, }& `4 a8 j2 V" A( O
( n' [8 J; K8 M# b. r1 |
set-plot-x-range 0 xmax

9 j6 A# G. `  j- H5 V/ x2 p: w+ ?6 E) w: H
set-plot-y-range 0.0 ymax
, r2 [( n* ]- m/ J+ A9 O
end8 \8 U. |7 j$ ^, z$ J2 W
% P0 B  k0 C6 v9 q
to setup-plot2
1 ]4 F) Y* }+ ^. e" T
0 s- Q: D0 i5 ?# U# Kset-current-plot "Trends-of-global-reputation"
) K! d8 R0 s$ I0 T

/ j: Y: v! `' T2 Iset-plot-x-range 0 xmax
' B/ S* u* `5 }  J) a, ~2 ?

' w& ^$ K! C" y7 F" R# cset-plot-y-range 0.0 ymax

& X( g. g) A" V0 o5 V3 Kend4 m, [/ s+ ~' H4 ^6 x7 @4 D( o1 }
. P( Q3 G! k: b" Z' j. G  Z6 G
to setup-plot35 b5 b% J# h- e: N; U( z& ?9 n
- W3 u6 k1 t. f
set-current-plot "Trends-of-credibility"

) Z% E  n  D$ X9 g. F% J# h
, `* V; _/ n% C9 _- n9 `' t0 [; eset-plot-x-range 0 xmax

: j- `& o6 K2 v8 V3 d
8 M/ E9 }# Z' F3 b8 B' Yset-plot-y-range 0.0 ymax

1 A- U1 C- h7 i+ }1 o; m% cend
# ]/ k& ^$ @; d" f+ ~. H- M# d+ O- u3 e& u* w8 Q9 J- `
to do-plots1 V) ]% @3 ~* V6 N+ I- q
set-current-plot "Trends-of-Local-reputation"; S$ u0 P3 a2 j6 v- F/ ?  `0 G
set-current-plot-pen "Honest service"9 B6 d/ T6 d8 w: I  ?3 O
end
3 \# y2 F7 a, I+ N# Q$ @- v* q4 I- h. Z
[ 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.) ?) S  D2 @" N/ o+ \# e' n; V: M
& N$ z: ?2 F0 {9 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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