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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:/ P( Y+ o5 E( s- w
to do-business
$ X: ~  p( G7 V2 f7 U; e2 s* m# ^ rt random 3600 O% G4 K" q0 d* _+ i  J3 n
fd 1
! R! [. [: A/ Z9 y7 H8 l# Q ifelse(other turtles-here != nobody)[
; p5 S. C8 T4 Y9 a0 ?   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.
% j( b; }8 O/ l3 \) ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 v3 N3 N. v) S$ F
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& Z7 I4 f( g! q. t/ ]  u& J' u   set [trade-record-one-len] of self length [trade-record-one] of self8 U7 Y/ C& P& R
   set trade-record-current( list (timer) (random money-upper-limit))2 ?4 X3 K+ y' j- ~
* }& D$ t# m: d& R. r6 J
问题的提示如下:
! k+ i; @# F& ?7 X& _5 Z$ T. D% y2 q/ ~
error while turtle 50 running OF in procedure DO-BUSINESS" K% f3 Y# c# c0 U2 u8 ~
  called by procedure GO: \) `; p5 t" k/ [0 {( R( A9 I: D, N
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
- q2 o. S, \- C8 [7 I1 L. s( q
(halted running of go)$ }4 P9 `+ z' s( e, ^' |

: I5 ~/ v# X3 k, J5 n3 D0 X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~~
* h0 @" V/ t* Y3 u: r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: v0 [9 h" `5 `& @
globals[: s  @& g, I( C2 s' \
xmax# Q: w! O$ s; v  Y$ P/ A' G3 S5 s
ymax
1 ?' e7 i7 E& |( k  Nglobal-reputation-list
" N0 F; V4 l8 m, g5 Y: m; n6 h* _* |
;;
每一个turtle的全局声誉都存在此LIST3 x) w8 f0 \: V7 f# r
credibility-list7 }7 b$ W# u# }. r3 i# B/ x+ `
;;
每一个turtle的评价可信度
1 i* g* U: N% j9 y/ C& r: p! ?honest-service1 g3 U# r; S3 i8 ~) W
unhonest-service
/ x6 ]. |4 H' N0 w* X& u1 Y& {oscillation- ~( ^' q, `' I; H$ P
rand-dynamic
0 x, {: }$ V  T6 O" u]1 G) E' x1 e2 Y; p* [
) j* J& O$ o! o; H* s( Z' D8 B# t" n
turtles-own[$ L! j& S; S5 y: }
trade-record-all
8 J& M  U5 o4 L8 ?, V;;a list of lists,
trade-record-one组成
$ o. L9 h, ], c% L! dtrade-record-one* ]2 d2 l- A4 B1 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' Q8 @4 h5 {% I" e; f

* b+ d: }% L, }2 C;;[
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]]
: E* A# L8 T/ C0 [" rtrade-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]
' B; b% P$ u, I$ Ucredibility-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
" P* d6 S/ W# K! k$ \neighbor-total
) s' K! |6 B; x/ W) V;;
记录该turtle的邻居节点的数目
0 t* I/ [5 C( u' b& B4 gtrade-time3 r  [" G5 P6 V6 E, Y* G0 n5 [
;;
当前发生交易的turtle的交易时间
# K. i* K% k4 R% C* m" {appraise-give
. P. \) U5 A. G$ b' I;;
当前发生交易时给出的评价
3 Z* ~* S; s' u$ F# V4 d; }appraise-receive
" S  P. I2 D# q2 z/ w# A, U( S;;
当前发生交易时收到的评价
. R) [- F6 W* q7 b3 B$ v- b; E. qappraise-time1 }  b- a% K4 ?% O
;;
当前发生交易时的评价时间
+ K- f  J6 b8 ~' Z5 Tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 h& ~9 V" [! \+ i, Qtrade-times-total7 Y' n: u6 I# u
;;
与当前turtle的交易总次数
* E4 A' ]% S; Y4 Z" E! ktrade-money-total
- X" ]: C* a& g. @& F0 r;;
与当前turtle的交易总金额
6 T! M- {& s$ M5 t0 r5 `2 Mlocal-reputation1 k/ C4 N/ J1 G; Z
global-reputation
' h: k' y* w, @9 V* s' Gcredibility
8 z  O+ R; E$ f* e  ];;
评价可信度,每次交易后都需要更新
0 M. h( q! I8 D0 d0 mcredibility-all- d/ _. U! D, Z! Q3 k$ H6 V
;;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 D. y8 a% j/ U# a) i: Z0 X) G$ W0 ]
;;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 `1 [  y$ R/ ]4 bcredibility-one, U, A1 f0 U+ q! F& t! O6 \& b
;;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  d, O/ B8 c! ]$ X5 Q5 m
global-proportion# K- R$ P+ T4 u
customer+ @9 P: }* E; m4 K0 z- ?
customer-no& t# T" \1 }. F$ }
trust-ok
1 d5 Y' U* p1 [8 O% ftrade-record-one-len;;trade-record-one的长度, Z5 k, X) c8 ?* y, D$ ?) C
]
: ^- Q4 [( v* M3 [5 q9 `2 X! z, g/ _' }8 h$ C, D% Q
;;setup procedure7 S! J) N& i0 f* F' m$ O
# Z& k, V% M6 b
to setup1 {2 U; }. F7 g3 @! A, k$ c! p
" }* w- z3 e4 Q- c' f/ X
ca
: K( V5 V* F1 t" u1 S$ a* s
3 M$ \& ?0 R; M! X
initialize-settings

2 |: k/ @1 p7 ~& n, d% z4 M9 g4 ]& u2 _, {2 U
crt people [setup-turtles]
7 l5 P6 y& p$ D! s6 Y) @" g) v
7 P  x4 m" h4 D! f  [7 Y0 ^/ b
reset-timer
" A% Y2 L; Y( |) c& V8 v! u3 P
  K( a$ ^7 `% u! t
poll-class
3 \" x' a, o5 _# t( c5 S

, o% R+ f1 [$ ?' k, @1 k5 F) ~setup-plots

! x* W. L! j8 D1 M8 @4 r" M) g7 x7 L  l! M3 N7 L  c
do-plots

4 E- @. i. S. [' e( q; r% o' g4 Cend
0 V' _: D: @2 V! A3 u6 Y" a2 [; \' [6 R7 V4 r& \8 q8 R
to initialize-settings0 P' b' \  V) A9 P$ b

) S$ l6 Y6 z7 m# Y, M+ m4 s" [" lset global-reputation-list []

7 S7 p# i- w$ k+ @2 A5 J+ `4 a$ v# `7 b- m# G, i! o/ k8 |9 A
set credibility-list n-values people [0.5]

$ Z- N+ S4 d( K0 A2 u) P
$ k; c; R* K% k6 H! G( rset honest-service 0

8 ^/ p- ?& y( U. [, j, Z& L5 M) Z4 m+ c7 F. ?* k3 R9 O4 o9 K
set unhonest-service 0

6 h& l  T6 \( p; E$ i: ^2 Z/ `4 J
set oscillation 0

' ^8 W3 n7 U1 {, K! z9 j1 e7 n3 b& {. Z& x  ]6 p2 s5 c/ m6 O9 l
set rand-dynamic 0

6 V# c0 R# g( _end" ^! L% i7 m6 f, y0 ]
0 Q5 X. O6 ]1 W/ q
to setup-turtles
% f4 h9 i& |& {$ Wset shape "person"
1 e8 A! D4 m  ]2 b0 H' Asetxy random-xcor random-ycor; e, B2 l+ E/ K' E2 k
set trade-record-one []+ w% C/ A' ?$ a. d
# _* n  p! o( v
set trade-record-all n-values people [(list (? + 1) 0 0)]
9 b0 ^7 e' P& e& |

$ x3 D# H/ ?% I2 d; e' ^1 Gset trade-record-current []9 }5 \+ C5 D& F- q: Q% b
set credibility-receive []
' q. }3 `" s2 o, S9 P" W6 Wset local-reputation 0.5
3 r0 v- n- y6 qset neighbor-total 0& ~6 W* K: O5 d- s% L
set trade-times-total 0
9 y- _' O1 Q" V! p/ Pset trade-money-total 0
! |4 F6 ?$ ?. p- ?) `: N" Mset customer nobody
: T/ R  N3 H0 j) I* Aset credibility-all n-values people [creat-credibility]5 W1 a" C0 D% }  ^3 ^+ O; Z. e
set credibility n-values people [-1]
9 P( t- ~/ F$ G8 F1 q9 S3 @get-color
( D$ [1 W$ E/ m. H% h, W3 T+ p

) i% j/ f' q* B" g. Lend
2 b3 V+ D6 V9 c$ ~1 C7 W0 E# S) j! R7 j3 z5 R9 E1 h
to-report creat-credibility
" o! I6 v+ t+ Q- freport n-values people [0.5]
- X  G' E4 p; Rend# h1 H$ q; o( e) o2 I, ?

: F/ j5 w4 |& g0 G1 r/ ^$ L: vto setup-plots
0 u$ P! q) p$ |! K. j% ~' @8 y1 q+ |6 ]9 t$ S. ]
set xmax 30
4 x3 {& N! ?* r

/ F$ l+ e! |, F- _6 b. sset ymax 1.0

4 y# P+ \# w8 o( B
+ Q, N* G/ s& O5 |clear-all-plots

# M0 Q! h$ ?4 X6 Y# j) H% f8 q5 Y$ k
setup-plot1

$ ^0 t/ i) f; r, |1 W# P
9 @! h% o. l# A( g" _4 Q  U. ksetup-plot2

6 y2 m4 f9 g0 `- o7 _
! E6 I  V0 D5 \' E7 {. |* g, Psetup-plot3
8 ~( q6 Q' G' j! ]$ v7 o. F8 r; S
end
5 `& Z% g! }8 V  h1 q; G
. Q4 d( d5 Z. |8 A. F+ |;;run time procedures- T7 Y  @: R# Y/ I9 P% _* x
. u! |  X! C5 h7 B: E: s0 o& ]! q
to go
* i7 Q  t5 `0 Y# N# I
" G9 S$ Y! L/ N$ s9 m! G8 `ask turtles [do-business]
% ]: G& v$ X- T
end
6 I* V# H9 H0 V' o3 k9 @# U
+ f9 M; h, r% V, K0 kto do-business
& v- ^1 Y0 }5 E' L& M5 X
6 E- ]. j- H  q1 k. o

$ a5 y# k' q6 urt random 360

9 x( e, P" g+ l2 S( c- F+ w* r' }& }9 ?' E
fd 1
/ U  D$ D! B) o' X3 a; l5 p4 f7 U' @

/ J8 o$ m0 B; d) eifelse(other turtles-here != nobody)[
5 Y3 p( C2 T* B! Q9 }3 U
7 g% m3 q: q! _/ q# L+ z
set customer one-of other turtles-here

* r6 Y4 S* j- ^
- P/ Z* p' @1 i( I0 I2 W2 g;; set [customer] of customer myself
/ v. y9 D$ i+ \+ l$ h( ]7 F
- ^' Y4 D: p1 `6 a
set [trade-record-one] of self item (([who] of customer) - 1)
3 x' a, D, L& ^7 ?' F$ L[trade-record-all]of self+ ~) G5 |! `, u- }8 w9 i3 o3 h
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ Y+ C; H* N4 u" {" K5 C

9 U. ^# E) b1 \' W) oset [trade-record-one] of customer item (([who] of self) - 1)
! m/ `# r% }. j# c% V0 c, @[trade-record-all]of customer

* n/ X+ k" C2 L. q# T7 R! M. @& o/ D# g( `: h
set [trade-record-one-len] of self length [trade-record-one] of self
* N) R! ~8 I4 a0 F
4 t( |# u$ T. a
set trade-record-current( list (timer) (random money-upper-limit))
* L; p) y' S0 r7 ^

/ B( m5 X! {% O! X) rask self [do-trust]
- h! ~$ M5 ^) {/ W! @/ };;
先求ij的信任度+ E- }( W0 q7 m: Y
0 V4 a2 t* K, t' _7 P
if ([trust-ok] of self)9 q$ D% g2 k! J' F! E
;;
根据ij的信任度来决定是否与j进行交易[
' k! }& j* A& Y6 s; U% C5 `ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 h; ?1 U7 g, n  O3 J5 u. M7 @
3 j. y& H! V; B+ {& m2 G3 V
[

, j4 U  r) T' o9 e
% f; w8 j" X. e( h! ido-trade

4 H! Q: \+ S' L" \& ^/ G* u& P6 I- J- n- \! u
update-credibility-ijl
9 R9 H# U  [  q; G0 `
8 j/ ~& r0 q4 b4 ]* Y, K+ M
update-credibility-list
6 j( E" L  l5 M
" l6 Q  X/ |7 z4 o+ T

6 f& d  Z' p* L9 K& U, mupdate-global-reputation-list

1 \* ], f3 N3 K
/ P) p! u1 M/ u. H: U! t4 }poll-class

9 A/ f& }2 b- j3 Z, M9 C; Q$ H1 {- F' _
get-color
3 e! o3 A" q+ l/ F/ O& x

" X" z! z, K4 @7 o8 q1 {]]
  ?( `* c) s  R' c5 D, R3 J# H! I9 i% g7 M, D( A
;;
如果所得的信任度满足条件,则进行交易* g7 t" X* X" i  U8 |& F5 R9 ]$ W( G

+ E, z1 v% t+ Y[
2 j0 u+ h2 H) [+ r+ ?: W
' S3 K4 E7 D# G" b  ], x
rt random 360
0 F) V8 r7 ~; h5 G  G/ E
# L$ F' T# x* d; O
fd 1

1 s0 S0 a! I& W- u$ v" r
3 s6 M5 C$ T8 ~9 g]

# U1 c7 L0 s% _+ ~: O$ Y
, H8 J) a* D: K# T# R( p' Aend

) m+ r' s( H- o+ Z& P9 O6 j8 ~, D( ]3 x5 K" v# P! l8 `8 G7 D
to do-trust
, [4 W2 L1 c& X+ A* N% A5 I8 U0 aset trust-ok False" R: }9 L$ F# J% W; U. X' K
1 k2 y/ F; z- P/ A9 L. `- `% a

5 t8 h6 \/ v, ]" xlet max-trade-times 02 U* ~' Y6 d& i4 P8 J/ @3 c, u
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ E4 e/ S+ l& n9 m$ \let max-trade-money 0& ?+ j+ @3 [% R4 f9 |4 B
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  H) v+ a% C8 U. P+ S" F+ m
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& V" S" r" n, m, h: o! H  Z4 T% ~
' L9 b' |2 g4 R+ Q( u3 O

/ R. o6 s: }$ H& _get-global-proportion+ h; @$ X9 y6 Y* W7 i! K8 N
let trust-value, N1 ]+ s  t7 `  e. S
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)
( j! P( r5 `& ~/ U5 K% J0 x" s
if(trust-value > trade-trust-value)
+ F: E. k: p# K) w[set trust-ok true]
7 {5 j0 J" D7 a* uend  c8 C/ ^2 \/ T2 h9 x! @! e8 c+ U
: M" d2 q) W0 k* l9 {# ^+ J4 \
to get-global-proportion
  ~, \# Q  |! q$ T8 c( S1 {ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 T9 D8 R( r; z' D! [8 h[set global-proportion 0]
6 G, [4 v! A8 Y/ O; W+ X[let i 0+ E$ e. ^. K0 Y' v9 }8 v
let sum-money 0- t" k$ O' o+ a
while[ i < people]$ y* q% d- O1 t- x# s1 r
[
4 S: d. S: B# p1 P  P$ [if( length (item i5 \: [# S2 B2 Z1 k" D9 |, o
[trade-record-all] of customer) > 3 )

" ~8 Q+ v1 a* i& F5 [[
9 b# h1 a, L+ T6 R  I% f0 Iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( s/ k( G/ b$ W]- H7 \- Z( j. P& ]( Q+ z
]! p6 \" E1 _; Q# \9 {
let j 0) |( w2 C  r2 q, e/ i2 T( o$ L
let note 0& J. e& D6 }" y, s1 T: V
while[ j < people]
+ P! V! s) z) |9 `; Y: g[/ ]& ?* j" K. T' W0 k- i! f
if( length (item i6 _: s; S6 H$ u+ A: E5 t. }- r3 r
[trade-record-all] of customer) > 3 )

7 C7 ^! G% {5 o2 m[# I' n! V) T4 \4 Y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: q+ b2 u: f" H6 n: J3 R; a[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 P' e/ v8 Q( T: x: i7 Z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ L2 ~5 \  P, R) @7 |! D
]
3 Q9 K9 w+ x- T9 a! g) F! r]  F* G, L# c% _' [, U, q7 F
set global-proportion note
" Z/ J6 r" @4 ]! [! Z' o2 p& G/ c]
6 h# S# f! T* r2 e' Bend
0 g5 S' a' B+ q2 b  ~
: C5 r" o% f# q; X/ P0 mto do-trade+ u4 C& t8 o3 |1 G4 ?
;;
这个过程实际上是给双方作出评价的过程: M. z% W! A7 w/ d: o  H8 ~2 d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! v9 i; g( Q8 sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 i  V  T4 Y+ D2 A6 }set trade-record-current lput(timer) trade-record-current0 K$ |2 r1 D, Z9 G: e' ~$ D3 C
;;
评价时间
! g2 d0 J! `* M: ]1 w* y! w; v( Iask myself [
7 p& J3 A: n$ E1 C9 T" ~update-local-reputation4 T6 b/ O4 z/ z3 _% D' D
set trade-record-current lput([local-reputation] of myself) trade-record-current
/ O$ v) q* D6 `]) }& P- c8 B5 o% E: c' u  ~  D
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ h. c$ m3 {! Q/ l  k) w
;;
将此次交易的记录加入到trade-record-one5 e3 z* n' m% A4 v# }
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 [8 C9 Z* E$ y9 N/ T7 C) ]let note (item 2 trade-record-current ), }. g) {( [. J6 [' S
set trade-record-current$ z6 Q) u8 {" c& `2 {3 ^+ L8 k4 E4 Y
(replace-item 2 trade-record-current (item 3 trade-record-current))
- ~3 _5 B0 b$ [+ ]6 L0 `0 P- D& t& r# S
set trade-record-current
1 e$ Z+ D) e0 S! x2 a/ w% d(replace-item 3 trade-record-current note)
" B! V0 l1 ~7 e$ n: a" c% l/ G; F8 ~) A: L
# s- k# \6 h! |/ b7 d
ask customer [! I( v- g# `  R7 t
update-local-reputation' q3 H0 o* n4 d% E* Q* b
set trade-record-current
/ C; @  k; l8 j+ Z+ A; S(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" R) C) q  U; x/ F0 x]0 ^) B  f5 K7 `. F' k

* |7 A  @& g  o, h8 k- X% ]
1 X, c( a) u9 o0 a( c1 K! L  V
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 c# ^- x* j0 }$ f8 x4 J
8 E; P- U' w  l4 ]1 \+ O7 T
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; f& z# a, O8 L" A% `/ J;;
将此次交易的记录加入到customertrade-record-all* r; `" B( T; L7 ?; }) |7 _4 I; D/ J
end
5 e: Z4 f6 B- G. F# `& }
9 p  W" f- w8 b/ Rto update-local-reputation0 @6 Z( z2 M+ J
set [trade-record-one-len] of myself length [trade-record-one] of myself8 y. o8 y2 M; [" @3 I3 s

" Z- r: u  h/ b% O+ _7 w1 H: r
, m8 ^9 l0 @2 N% e2 V;;if [trade-record-one-len] of myself > 3

$ }! O. P' x) {update-neighbor-total
' ]  {) U, Y% c4 S( J/ W6 Q' b;;
更新邻居节点的数目,在此进行5 u, G- ?: y* _4 w
let i 3
$ w+ _4 |5 k2 ], A. \let sum-time 0
& M  x3 `" s) N  A# qwhile[i < [trade-record-one-len] of myself]& L4 Q2 C% D2 h. [6 j
[
- s5 q+ j  n" ^9 s: V9 ~5 }set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 U, y; C! C  J2 G$ ^
set i. J# G$ E/ t1 A% Z* f- O
( i + 1)
1 o- m+ c' \/ v! g" y" A
]
, ~6 N3 n) n, Z* f/ tlet j 3
- J9 x1 T1 z2 d9 z4 o) M$ X- U5 Llet sum-money 0+ |" y6 _; n1 Y' p" [* t1 ^1 x
while[j < [trade-record-one-len] of myself]" t2 H' g9 n; x) O
[
+ J. x1 @0 I2 qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time): ]( f# X1 b! J2 B& L7 J5 {$ ?
set j9 |/ N3 r0 O% x0 l0 ]
( j + 1)
/ A$ t" n! E1 I- N
]; y# K6 h4 h, o3 G0 v/ t) _
let k 3: U4 F& s7 \9 k. ~
let power 0
) Y& v7 Y4 R# h; m4 D' i( olet local 0
. S7 j4 I/ ]* X, Dwhile [k <[trade-record-one-len] of myself]
: ?, ?1 g) {. _! g  y[0 E3 P0 Q  g3 P8 F5 o
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) , o) C( t. G/ n
set k (k + 1)( G( _* X) d+ D% D- S1 u
]
5 G! n7 d9 a8 ]set [local-reputation] of myself (local)
4 E0 @9 v* [9 q/ m" w/ M7 U  Zend: u( ]7 ?  D& [: x, A
8 l# e0 D- E1 Q# J9 z  g# W
to update-neighbor-total
* ?' U  w" g8 c7 g% e$ w/ X: J; Z2 a0 t: u+ i
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% U" n3 ]$ X- ~. Z" b) W6 @5 Z$ J+ U1 L0 Z' e" C4 L; {

( Y- l8 ?3 E9 p) F$ U/ w+ t8 J3 F) bend
- M. B3 N# f: f: p
, k6 A3 P) Y% G2 s7 x! Vto update-credibility-ijl
3 e! H& u1 ^- k+ s
  J8 D7 F+ Q0 e2 P6 }. g;;
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。
% e# B. L% w+ m, jlet l 01 j; u2 X+ ?1 m4 N( E
while[ l < people ]
8 g: n8 z6 m- Z6 |8 T2 J: B1 [;;
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
& s- K7 Q: X0 v5 e: e0 c+ F# z; A[- H+ M4 [* h8 d+ b8 b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# |5 z4 N" D! Y( t" M: E( k7 U( p# p9 Xif (trade-record-one-j-l-len > 3)3 i' u; n' F3 P+ X4 R6 n5 v& O, 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
! X" i4 Y/ f3 g+ i& q  Q, \7 tlet i 3
- i, d# c! _0 [5 b9 jlet sum-time 0& ]. L- i; [0 `3 [
while[i < trade-record-one-len]" t& O) S$ ~1 F0 \
[
, q6 b3 h! i- a8 \" fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" s+ [) C$ N4 c8 `" |' Kset i
% u) W0 o1 l3 x' E, d( i + 1)

0 A  s- O- n( }3 N. _$ I]7 u% y) r6 U; b8 P$ j
let credibility-i-j-l 0
9 f6 ^( H( J0 F& F4 ]- F1 z;;i
评价(jjl的评价)
/ I6 P# [* Z4 v1 q) F+ ?* Q$ Llet j 33 O! r+ M+ R5 }, K
let k 4
, j/ C- b! b6 n% S; ]$ W0 Mwhile[j < trade-record-one-len]
' y7 S4 G& e2 F& K[
2 z- |0 E- e" U5 W+ x' B1 @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
/ e  N! ]8 y8 {+ b) K3 ?1 kset 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)
8 t" b; t  q* |! ^! `' b5 iset j
1 ]% z2 l( K! M' J+ K( Y( j + 1)

& T: J- N$ T, X]9 h# B/ x0 |" ]( Y2 p: U  D) }, O
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 ))
1 c! y  q/ Q$ i4 p' \( ~9 o* }6 `/ X* |- |

; U/ L* x/ i/ [( R2 R" [. _let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 O" W/ X5 H3 V+ A
;;
及时更新il的评价质量的评价7 Y5 T8 _/ a& k2 ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' ^/ x7 b) r" n. Y' Y, j
set l (l + 1)
' [8 j7 T1 r: ?  i4 j0 q0 y( M: W]
2 f( r; X3 Y1 A  K2 Aend
' h2 p) A0 G( C, r: T! [* y/ P# e5 d) f2 L6 N4 |1 j# w3 M
to update-credibility-list
4 s- D( }2 a" F. E8 A6 y  D/ g' Qlet i 0
, Z, `; B  ?* N: o$ `: dwhile[i < people]0 v* j. |/ D6 |- N+ m) _/ }$ g  I
[4 u1 K  L4 s) v- I( u1 @
let j 0
8 A$ t1 |3 o6 r/ N! B2 _3 ]% ^let note 0
) x: H1 t0 M/ }5 \. mlet k 0
, m: u6 G3 g/ k0 C9 D4 _- m;;
计作出过评价的邻居节点的数目
5 L9 a& Y5 a+ rwhile[j < people]
+ }1 S7 H9 ~) o+ a! r; M; \[9 X) h4 V8 @" f$ t6 N, Q
if (item j( [credibility] of turtle (i + 1)) != -1)
6 ?8 j# `: k1 w. N# e1 u;;
判断是否给本turtle的评价质量做出过评价的节点% O! q( [# @, N1 k, N% Q+ v0 S
[set note (note + item j ([credibility]of turtle (i + 1)))0 }- Q2 @; V9 q; \
;;*(exp (-(people - 2)))/(people - 2))]

* W3 e6 `2 v: ~' i+ sset k (k + 1)4 }2 V# Q; J( O2 q
]+ j* g% Y! P9 w1 ?! Q& @
set j (j + 1)4 K. z$ b; ]/ l
]' G9 z% r" T8 Y. j0 g  s2 Y& ~( l+ B
set note (note *(exp (- (1 / k)))/ k)* x8 z& ?/ S  Q: R2 J; [# E
set credibility-list (replace-item i credibility-list note)
; I1 z+ X3 \5 a8 v8 n# W4 i4 e& Kset i (i + 1)
3 m# }: \4 @2 v3 \]' x/ K9 i( e  |$ G; x
end; P. P9 O( J# S

. ~  i" ]# u; T+ G/ Fto update-global-reputation-list
7 y8 ^, I  V1 I9 y2 U/ ?let j 0
$ C$ @# {4 V7 P- x$ A, mwhile[j < people]
% |/ z# O( x+ h[
- ?0 _! P1 g0 C8 n! C4 Alet new 0. B/ U1 y9 s. g: ~* w3 _
;;
暂存新的一个全局声誉
( y: Z& O% u/ c; G% @( ?6 Alet i 0
1 W: d4 x: g5 ^1 b! f- q9 U% q# ^let sum-money 0
! W7 P+ A7 [) \, F+ g$ ~let credibility-money 0
8 {+ C8 J  h/ n: ^while [i < people]
- `2 v: h% Y# Z5 k9 @[# m7 x% G3 K5 f$ ~, u  n+ [
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 Z/ N/ C; J( Zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 |# h8 C& [. M" c- J# C# @
set i (i + 1)* G/ W/ z; ?! k! l/ H
]9 m0 ^; L7 M5 {& v" Z
let k 01 s. B3 x9 ]/ x% T0 T
let new1 04 T/ ]' G) z4 L2 H6 h# A) k5 o
while [k < people]
6 x) z; v; h# L4 a2 _$ o, v" b9 a[
# W6 O9 |. o. P* }6 Tset 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)
; w0 u( F) a5 vset k (k + 1)
' @# Q: H3 L9 w, s% Z) T]
8 A; q4 T; _$ M8 E, ]* ^6 v0 lset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% }& p- T: |; ~: o3 D3 |8 ^" Nset global-reputation-list (replace-item j global-reputation-list new)6 S0 [: Q* H1 ]0 y2 w6 U" ]8 o7 z5 Q
set j (j + 1)
* W4 i4 m" j3 R% k]% d9 O/ l8 R7 t% r
end, ~7 M0 w' Z4 ^5 |6 N
- A4 z$ A) \) s6 M( T2 X) u& ?5 I

+ q3 q' X* w) a: l- A
$ o6 I# }2 U6 ^! R" l7 Gto get-color6 }/ E% {3 {0 o
* A9 X% t. N% }2 X
set color blue

& @5 f8 {4 X. t2 a- ~' F7 ?  ]! send* {# e' ^: ~2 F+ Y

4 x! I$ _& Y- O3 ?to poll-class
0 K. [& K) h3 Rend; H) X  k5 g/ A, ~9 {+ e' _
! X: L3 ^, \- i" l2 m: z. ]4 X1 b
to setup-plot1$ O( L- o3 b$ [3 F4 R

% n4 F) X, y/ ?4 A9 p+ N( ^/ xset-current-plot "Trends-of-Local-reputation"

$ b# D. ?  Z% s: o! a! g& g" g5 a
/ }5 Y9 p$ E  X+ C# ]set-plot-x-range 0 xmax

# |/ m+ Q. J( f  p& B# M/ n: J
2 ]) O! T# g- Fset-plot-y-range 0.0 ymax
# a) Z: f9 r; ]# N3 _/ o/ K
end. s+ H5 \+ P1 @4 @2 [

8 J' I. A" Q' [. R/ x0 ~' hto setup-plot2
3 ^$ ~! m+ D$ ]! P; w$ i$ |8 z( B# m& S7 _
set-current-plot "Trends-of-global-reputation"
- _. j3 A4 v! G9 W3 a6 b" {

5 {5 b: h" q  J0 e) ?7 W# K  Kset-plot-x-range 0 xmax
! z2 m, x" d9 |# a
$ w9 b" b, Z6 w  o6 d
set-plot-y-range 0.0 ymax

+ G( x* y& k8 y6 h# Gend
4 Q8 n3 a: D3 h$ F# E4 y& Y$ X; p; \$ t6 y- P
to setup-plot3
" c; |& n7 @7 k# M$ q4 k6 N% ~2 m3 b1 u7 T  x
set-current-plot "Trends-of-credibility"
$ D- ]* G2 j; z6 {
# t$ O" O8 b' z2 S8 Q( b
set-plot-x-range 0 xmax
! `: J# R! P5 e3 a( D: S
% N6 s* r1 g5 Y8 ?# ~# |( s" ]1 j
set-plot-y-range 0.0 ymax

  E2 q# a% T0 {# m! hend
: W8 R" x$ b* e; F) p: F- ^. m+ F* N% C7 t& ]2 }, ~
to do-plots2 k& I) o* Q" ^: Z2 W* L% ]4 Q
set-current-plot "Trends-of-Local-reputation"
5 S1 f% f- m. P. n  Kset-current-plot-pen "Honest service"5 t2 }! p, I; @# D7 i
end- I6 K$ m5 i8 i* J6 d! L: I

1 O3 V! ~9 }# l& [1 v: k[ 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 d! l% A9 y# o9 z; r, v4 @6 J/ d. ~8 P0 E8 U7 ]; ]* q/ N) }
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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