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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:! E! b; o6 I5 V3 R
to do-business . w: c3 L- T9 u$ m; w; Z4 [8 k  |
rt random 360- l2 j5 |9 p9 Y0 _' L
fd 13 _$ W5 G+ G$ S
ifelse(other turtles-here != nobody)[, I- X* W$ C8 k" D9 H% H" i$ F
   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 F. Q% }) `5 b   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ q8 L# K" e# I3 j5 C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! W: f1 O2 u3 I2 [( r4 P" u
   set [trade-record-one-len] of self length [trade-record-one] of self
" k2 y3 b3 [+ [% L   set trade-record-current( list (timer) (random money-upper-limit))' G* Q$ G0 F( l" R( @
; X  Y' R1 T$ m1 Y: v1 e' [7 e# V
问题的提示如下:
7 c% j: h8 J; k) q# h4 M) P0 Q) F0 O2 G6 c  S
error while turtle 50 running OF in procedure DO-BUSINESS
7 {& B& W5 {) t; ?2 R4 B# o  called by procedure GO
) j" i& `" v- I- Y7 BOF expected input to be a turtle agentset or turtle but got NOBODY instead.! y; l  y0 D4 j, M% S- u
(halted running of go)
. ?- t4 Y' Y3 ~4 i: j
4 K$ E' c4 c, J4 N3 U这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~( i% k  e/ o" 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+ E- b8 d. E- x; X. W
globals[
; A( `; [2 c$ `* e& s2 t- ]xmax
, O: A1 U1 A2 e5 O' ]/ ?ymax! |( o' h1 \3 m! C' C: S# B
global-reputation-list" O" r& l1 R. f8 f# K
/ Z5 q! ~! X$ E2 e
;;
每一个turtle的全局声誉都存在此LIST
6 F/ ?' V) W$ @: i: Ocredibility-list
; s, p: i8 s7 s% {  E;;
每一个turtle的评价可信度
: H1 P8 ~" ~' a6 ~honest-service: ]& u$ d  ^4 _, ?* q0 o4 u1 O
unhonest-service
2 l* ~# V2 B% w9 o) Xoscillation
0 T9 x: B. W; U* H; jrand-dynamic6 o7 L1 |+ z$ a8 k* \  }
]6 j" x- A& R4 [. q% s% b

- {  w( S9 j- W! `7 ]/ bturtles-own[
! T7 h7 ~+ I8 F5 F0 F9 {trade-record-all
* W* o3 H' r2 y. W8 u- g;;a list of lists,
trade-record-one组成% i! b$ P% r, H: s0 f
trade-record-one
3 K8 f# K, V% v6 S" 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
. U8 b& a" a9 @0 j5 A( D! k- v, `  G1 T; \8 ]
;;[
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]], J2 e+ m% E1 E/ y6 P# l- `
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]
  m4 X/ f7 n& E+ r; o6 Qcredibility-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
- T$ e4 u1 n' O& d' X' S% Sneighbor-total
( p0 v3 m" o& f$ K;;
记录该turtle的邻居节点的数目
5 _4 p6 l. v6 `; k: `trade-time
$ r& J, X: C! _: _# m' J, w$ i;;
当前发生交易的turtle的交易时间5 b3 S) |7 a' @! f  {& t
appraise-give* _, ?  s9 a# i/ w
;;
当前发生交易时给出的评价
' k+ ]1 t! t" nappraise-receive5 B  a7 {. \2 K' Y" L
;;
当前发生交易时收到的评价; E4 D7 o" S. S) g
appraise-time
4 t: e2 b! v8 A8 W) J;;
当前发生交易时的评价时间9 q- }4 Q- l, E
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 @0 |* q% G/ c+ p4 {trade-times-total6 W/ K& B5 u1 {% x( B  ~
;;
与当前turtle的交易总次数" u  q. B( \3 q+ s
trade-money-total2 D. ~6 |8 t0 n$ V0 ~7 F6 u
;;
与当前turtle的交易总金额
6 C$ o% @2 m8 q: |9 [local-reputation- [4 W. N7 K* [% f4 Q. X
global-reputation
3 c+ Y2 c- a7 t' x6 O1 ~/ v+ N7 ~credibility
! w) @- r' t2 {;;
评价可信度,每次交易后都需要更新
; e$ y9 W9 @0 v! z2 Ccredibility-all
2 e+ Y3 W, g) }. [& R;;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5 Q6 _8 \  x# h

" \$ |+ L$ E  o* P- 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$ F0 K- U, ^) l
credibility-one
- y7 H" E& ^$ K: x0 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  b7 ~; r& D. P+ ?
global-proportion+ ]6 H3 I/ m! w6 Z
customer
5 U" A1 z, w" S) C  _customer-no
( g- {* ^* o) Q9 r- e8 J: strust-ok* ^- X5 G% z4 v, h2 a7 u' v: Z0 g/ K
trade-record-one-len;;trade-record-one的长度' p' e  O1 z9 h1 d& R  u% I
]
; c' b/ Q9 C& ]' p8 v4 c: m% B- ~1 l1 Z1 J% c* {4 C, d1 t
;;setup procedure
% O! r# x4 d' \8 i0 z; _! R* b% e6 s. D% \/ p" E4 r& j& P& p, ]
to setup2 l- U4 A% X0 B4 u+ D

% @- s* g+ a& A1 q1 jca
7 ]" z1 P( J* b9 r$ F
3 D7 c& C. r8 X0 f. N4 C! U
initialize-settings
: B4 t6 \% r4 g) j$ b4 o
: l$ W  W6 s; x, i* k; o
crt people [setup-turtles]
+ A. Z) T7 A7 J; H

, s- _+ N( v0 U* r- b% Z- b  g$ Freset-timer

5 M  Z( _4 M% \% i( N3 Z1 j5 K
8 ]; h, H$ D1 q( T- U1 }poll-class
4 K! k# y, H  h( \9 _. S
: y) J# L5 h! H/ g" g& B' ]7 \; ^& v
setup-plots
5 ~/ }4 Q7 K% k) K$ B5 _& ]$ |7 X, F
/ J; z5 c% ~9 |; g* }% w
do-plots

, o2 V# E+ d$ F7 bend
( _' L" ]. T% Z: C2 F2 _3 P. a; l/ ]2 X2 J7 ~$ r8 S( N
to initialize-settings* Q( G$ A6 Q8 j- K( q. p# k

# C; a9 y' `, [: @& z' j! V- Cset global-reputation-list []

9 Y) O- t; M  D: F
3 R1 |9 C% }1 D3 J$ m; F$ o: wset credibility-list n-values people [0.5]

0 x* U( H  F# W1 o; N6 Y) s$ q. G7 h) w& h4 g  h
set honest-service 0

  e6 J5 a, V) B, ~" t  j* R% P% T- y. {& i1 Z
set unhonest-service 0
3 m, U4 G7 ~7 p- I) }

1 ^/ R3 ]- @5 i6 T- M- tset oscillation 0

+ f9 q' w/ x1 w3 G6 P
6 b3 q. H. o0 r- v& T$ Xset rand-dynamic 0
3 I8 ]9 R& Q2 R- b* u7 N
end% i. o) x- p8 I( W: V

6 s5 d/ J5 o9 F$ u5 P0 q( x$ W) z3 W5 mto setup-turtles
. O- a1 B/ t( b7 f& A4 p/ Eset shape "person"+ _0 |% \6 L2 _  W" b  b9 k) V
setxy random-xcor random-ycor# n: p% l9 G/ ]3 v0 F+ [) A1 }
set trade-record-one []) g) T1 @5 w% r' {. D* ]. d

0 Y! N! |7 h5 D2 Gset trade-record-all n-values people [(list (? + 1) 0 0)] % ?  r1 p# K! h  D# ^
! L$ x7 T2 t& ^" s; b, h
set trade-record-current []
6 d$ S, q, k; j/ eset credibility-receive []0 O! ~* T0 M# Q- m% [' I
set local-reputation 0.5. W3 V( t* G0 J! C' i' c' s, |+ ~
set neighbor-total 08 L; F" p' ?, g$ Q. s# \% m( p1 w
set trade-times-total 0
9 C3 F+ \  p/ I/ s: g  iset trade-money-total 0
/ j+ R3 {, c/ G6 \set customer nobody
0 T/ j( p+ H1 l" tset credibility-all n-values people [creat-credibility]# z2 t1 z) T4 w3 X( m  ?
set credibility n-values people [-1]9 ]3 s: O& u/ G" y- y) ^
get-color* p" p# p4 {, _) c
! ]; O* G8 `" x1 P* B4 a- I  O
end+ w5 _4 b% ]" H, S- P6 `1 T3 ~
0 g1 A% D3 |( `. W# J, _
to-report creat-credibility- M0 O, N& K" W  W
report n-values people [0.5]
9 h1 F1 b9 m: ^/ i; E$ w) bend
- L& W8 j; m2 ?7 t6 ^2 k5 R/ f; c8 a
to setup-plots
3 V3 X/ `7 D9 Y4 {5 t9 \
3 y- R0 F/ F5 s5 K7 |5 Q5 R, ?set xmax 30
/ z+ {: }+ B  [( U, J: s

: w: m% O# f% @- ~$ m, l- ?; [! }set ymax 1.0

. z; I( ^( m4 ~8 K# o2 F$ c% I- @: x/ s
clear-all-plots

" F  v, o: b4 w; r6 y
# t) X1 Q/ i4 C- ]5 R# asetup-plot1
5 K9 x% N$ y* i4 {- ]; ^- _
* `$ \/ }0 F' g1 I
setup-plot2
: G* J+ B6 X% l0 D, I1 j

% Y4 f1 V) B$ Y* ^' j% Esetup-plot3
) W) O8 u, X6 k1 O8 [; c8 ?
end7 Y  g( B3 y( }2 L; b
2 _; T2 R* f) t* S9 n" Y
;;run time procedures
2 f/ k& U+ ]$ y3 p9 S9 ?2 A' T: k6 y" p/ ]
to go) x7 [* b; u4 h2 O

9 h5 ~7 }/ u3 l" G8 kask turtles [do-business]
: I  V/ F% k+ P' M5 S0 J- R) P
end
3 S- Z2 C5 ^! e. O
, d3 u# z, V% W8 @6 [to do-business
$ e( b7 g4 O3 @& l" m& j. g& P$ @
+ a. B6 J6 T- f+ i

" K& o! x2 S$ n4 l& j5 crt random 360

1 b. ]- R, l; \' a0 e% t8 K4 \
. f+ u' N! k1 L1 b( J4 i5 I. Ifd 1
2 p+ l; @4 }+ ]0 C) q7 @" C+ I
* ]7 w. B! b# q0 }; G% ^$ C
ifelse(other turtles-here != nobody)[

* R9 `3 @2 \; O* A) ?
& r7 x& \9 y9 mset customer one-of other turtles-here

9 t2 \6 T4 N) ^5 h8 _# v) L! s# u
;; set [customer] of customer myself
' W  N9 c% l+ A# ~) d2 k  Y1 }2 F

6 u+ ~. [2 R. h+ n2 Qset [trade-record-one] of self item (([who] of customer) - 1)
; ^2 a8 o) C) D, O, H7 p' Q, b[trade-record-all]of self9 C# ?+ M& U6 }: O! O; {- P
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* a$ g9 ]7 w: l8 j  h8 Z8 ~* s7 h% X* `1 ^, D2 \  T, F
set [trade-record-one] of customer item (([who] of self) - 1)
  W; z6 K( @5 y4 _2 {[trade-record-all]of customer
0 g" K0 {$ p6 K$ A# I8 ]4 h

& b0 D" O2 p" B4 Xset [trade-record-one-len] of self length [trade-record-one] of self
8 }6 u! X% \+ k- u

/ c! x: Y* P' Dset trade-record-current( list (timer) (random money-upper-limit))
" P: |, {- I8 q. ?* b0 W- X

) H" M4 v3 z0 hask self [do-trust]8 \0 L- G0 [" T' n
;;
先求ij的信任度
0 }! A5 m4 w$ S. V4 J* ~
; n0 E& c" X5 R( g6 V. B( x' Hif ([trust-ok] of self)
2 G' H& I) }. Q: O5 i) @5 O5 @;;
根据ij的信任度来决定是否与j进行交易[
0 s& b5 {6 L/ \ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% G3 g  O0 l: [* W& p
  D$ l, e& [! \" M
[
/ C: I3 ]- K$ x5 q' q; e) @
) r. m- ^. e7 P4 F0 ?' }
do-trade
+ \! l9 Y4 D4 h9 N

! N2 B: J$ `7 T% b' Eupdate-credibility-ijl
) ?0 K! D- }; N$ z7 _* t8 P: U: |' J

5 a+ V6 @. J. z$ E, Qupdate-credibility-list  i* [& ?  C- i4 r  V, r$ }9 I3 {/ X" Z$ S

8 W  ~, h7 }% O7 ~1 r  Q
, O: ?' Q8 l- F) [update-global-reputation-list
# h! q1 G# s2 Q2 G4 P" F/ d; p4 ^
& U6 n+ h2 c9 j! ]: [( p6 P- ?
poll-class
( D3 }. a/ E9 z9 i" Q% T) m
9 [- N( K7 i( v, G
get-color
/ o2 u( b" p- F4 }1 L( {# P; p2 h

( y! r( m; V/ P4 S) t, W]]8 V: G6 h5 N4 X9 q* N$ y" D

1 V6 {) I# H' a;;
如果所得的信任度满足条件,则进行交易
, l6 v' J, g0 M' G4 G( b" ?! W$ b( b5 {+ a& l  P3 o
[
) l( u9 S8 N. L4 ?0 ?4 O& Z( g. ~

9 R( z; ?% y; w0 Qrt random 360
# y* I5 F9 u: ]" }+ @. o# b2 L
5 S# `; |( S' o" L& P+ P
fd 1
& l- t0 {- D3 D- T* \$ U+ A
& X' H( ]6 @# n" I; u/ B1 y
]
. G( \( p9 ?, P; {, b/ l
3 G# u- a; V2 f. G
end

% j7 A1 D# [  j0 [2 ^
# y; U" J- {0 l- R) D% tto do-trust % Y% L/ p0 j, e0 W8 |
set trust-ok False! r# p; a' n6 M
0 l* o% F6 @6 z- i7 j" P, K( ~

2 H( ~3 k9 G+ u' Q* nlet max-trade-times 0
6 Y  u1 ~! g* ?/ }5 \6 [$ j5 @0 [# o' Xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], p/ [) }& @0 k1 |
let max-trade-money 0. [9 N7 E4 g3 ~0 y4 |. X+ K: g
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# l7 U, i! Q$ P' 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))
2 Z# f4 `4 e7 b2 I  H( t& Q3 b2 k: Y8 j# o

5 [* }& y# Q7 E& Mget-global-proportion
* F0 Y; ?2 H2 i9 [1 ?- K9 olet trust-value: e& {, q9 o9 Q! b+ e
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)
5 L1 `( x) `2 g+ O) n. h* A1 w
if(trust-value > trade-trust-value)6 v  ?$ m2 m! E3 m% L
[set trust-ok true]5 K& w: i) j" G) u: c1 {4 J+ ?) m
end
; }/ h& L1 u/ {# r, [4 @
, {6 G" E( k/ fto get-global-proportion
9 m6 J$ m. L9 G4 p+ {. Pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 L: x" c7 R% V0 W- w" ^[set global-proportion 0]
1 l/ J4 R# b5 j5 Q4 [[let i 05 n$ [; B8 F% e# Q5 j
let sum-money 0
7 G- }* N- T7 U0 u2 @while[ i < people]. N4 R0 e6 b& l" H6 e8 f
[" |- W% o# ?1 b+ H3 E7 N6 J7 `
if( length (item i) d0 W1 r" K8 }. \4 _7 p# q, c& ^
[trade-record-all] of customer) > 3 )

0 c. u0 a  F2 d[
) r+ `. f) |$ ?; D' u% Xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( x2 R$ j' j2 k8 d% K* B5 }3 w9 y]
+ {2 H  \; ~# C]0 H- `! @) I- W8 b. o2 C& z
let j 06 L5 h# b0 V& U; Z. z
let note 0
% ]" @3 h' h% Z, A2 W$ Swhile[ j < people]4 Y1 ?/ _+ `+ S5 B4 b2 o
[8 D1 h/ h7 D) c) g6 B
if( length (item i( B+ b& I6 @: J' Q4 {
[trade-record-all] of customer) > 3 )
" B# o, W9 o( O# c
[
; Z1 d$ G1 x9 G5 a2 ^7 R% Y* H2 Pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 Q4 ?( j/ J3 O9 T/ d; 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 f2 t- v4 ^8 s3 x7 h[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# f" O& p% k7 C' s]
0 s- u5 L8 c$ x]8 V- T$ P6 c8 b% C
set global-proportion note
& ]9 ~' f6 H' R! Y/ ~. n, c" B]
% L) S' f% C! o# W  z9 M' E& pend
/ b" S% N, Q& c" V
% f. `) f# F5 A, b$ {/ O$ nto do-trade
8 t* _' J& v; d4 N7 `$ n;;
这个过程实际上是给双方作出评价的过程
* ^* u& S% `5 o% fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  x( v' H' b6 b% v7 D2 t2 lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  T7 H" I1 f) K$ e5 d9 J9 Q
set trade-record-current lput(timer) trade-record-current- E' s9 r. j4 r3 P7 T. b
;;
评价时间
8 Q3 a9 _# u- r+ O) p4 s* u+ r* C+ oask myself [* L* Z0 R! N9 r
update-local-reputation% U( a: v$ \# f" m" V
set trade-record-current lput([local-reputation] of myself) trade-record-current
7 A5 X; |. l; u: V0 W# \( }7 j]
5 y( i( m: v6 C, h) Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 N, v7 ?2 r+ u0 D. Y8 W
;;
将此次交易的记录加入到trade-record-one
- h/ r3 |- g* J( P  V, m: }set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); ?! ?& O' [5 I# ?  {
let note (item 2 trade-record-current ): X' s  R1 U! k. R' B- r& k- V
set trade-record-current
5 \. m, Y: H. v8 s(replace-item 2 trade-record-current (item 3 trade-record-current))
' c+ b8 {3 y/ d; \9 S, G9 Z
set trade-record-current
1 ^; A  v4 P2 X; L" h/ c4 w(replace-item 3 trade-record-current note)
$ }2 U! F( R4 o# ~" ?
8 e, m) l3 s: D' D# |! x2 j
$ |  Y0 ?: s: S' v- Q- ^
ask customer [
( W! Q3 T% h9 _# t3 V; n" X* Eupdate-local-reputation
: R4 ~& K' x- ]  O+ bset trade-record-current
; ?3 ]( C& B4 s5 _; [7 q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- j4 D- ?/ p3 O]
, l( y3 m- b( U, G, b' R9 ]
% y# D! h8 ~* e7 f
1 S3 B3 |  G! {8 Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% a" L' B  s% R1 X5 g

1 c0 X2 A: v2 B: @9 B% U9 Eset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ y2 o, w6 K$ _6 j, W: D7 x3 V- w;;
将此次交易的记录加入到customertrade-record-all6 L1 Q. D, W* f; K: L
end" v2 o& l. y: k4 {0 G) ]9 \

4 x4 S3 p: Z# R4 a- ~. Ito update-local-reputation
8 E% }6 U% D! f# K+ [set [trade-record-one-len] of myself length [trade-record-one] of myself
: I' U+ R$ Z, K+ S+ p7 V7 O2 p2 H0 J, I% l5 i

- V( j3 [5 W# Y. W0 X2 p+ M;;if [trade-record-one-len] of myself > 3
2 ~! e' R8 x0 \! F7 [  K1 w9 c) `
update-neighbor-total
' Y+ B6 w# {% Z: [;;
更新邻居节点的数目,在此进行
( @0 k& H$ h) m  Ulet i 3# ~: `% G7 V( q0 _
let sum-time 0( _- p3 D, o/ J- r
while[i < [trade-record-one-len] of myself]
- R, u( z# J2 ^7 _! e5 @[
$ C& b9 t4 h& |) ^* Iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% g; S  j- Y; a' j* G7 Z# _* kset i5 |. j* z1 n+ j7 W+ I- v6 q
( i + 1)

) n" E0 F& e1 x& U3 s" h8 R]/ m' z- x3 N* G: s
let j 3
+ c2 J5 v9 F6 M, @let sum-money 0; h1 R$ v6 B- s7 `! o. L
while[j < [trade-record-one-len] of myself]( M% a: `# @" y( f+ Q0 t
[
6 p  d5 f& X0 x6 \, [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), d! w5 M8 y* a0 U
set j
/ Z9 a$ l  R5 u, ]9 u/ s; |( j + 1)

4 x3 d; U& b6 k( P6 }! X+ F3 _]" C# q6 p$ U; t
let k 35 ^2 r2 a3 C+ p' U3 \- d
let power 0  U* y0 `; E$ a7 y' h
let local 0
3 z7 |! L) k- z# L  ^) |while [k <[trade-record-one-len] of myself]+ [, Y$ B- `/ O0 n# e! g
[
0 Z6 ]5 u2 `# h8 H, f6 T, ]* v% [" _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) & t* [: n( q* U, ~) j- o
set k (k + 1)+ B3 X! O0 ?. h8 G
]
, p/ }  t+ ?1 r0 X4 p# z2 lset [local-reputation] of myself (local). J) r2 q- k  c! p) g
end! z' v9 v- z; s
5 ~: p5 s) a  U$ O4 Z3 _
to update-neighbor-total! E; c/ v8 j% X& ]4 V+ O% U& N/ v

, r0 \3 j2 K: c' F9 i3 n* F  Bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. d  W' t) g! O7 s- F# x
  l. y1 U4 I& F9 Z3 k
% Y: |7 z( Q$ M! n; v7 v. `8 A  G
end
$ W  K" I4 m+ \5 l3 O' {  ~- o4 L) K/ z, H1 Z8 L3 H% J
to update-credibility-ijl
# C( |1 M- S1 Q2 Q# P5 Q( O+ K; S' }, X1 [) F
;;
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。
$ D& J+ h! ?' Y. Wlet l 0
8 L, y- m0 z; V0 e! t' R8 Bwhile[ l < people ]( u3 g+ s4 c6 J: G" ~* i! ]' 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
2 W: M. r# d1 a[6 C6 j9 b$ I& ~! O
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 u9 o% b1 f) S8 F. B1 s- o
if (trade-record-one-j-l-len > 3)- ?  j" }$ l  Y- s5 F
[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$ Z& O* q- A4 X. r3 Q9 Y  n7 b+ n8 _
let i 31 X" a; \$ O/ a
let sum-time 0
1 J3 d- L! W5 {) i' ^% W4 g* z+ nwhile[i < trade-record-one-len]  p# S9 S' l  e+ r
[' b. v9 E# K4 B5 S/ v
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 X  F. @2 X/ L' K& {" M
set i( X8 P" ?" G& E/ b3 t6 ~$ ^
( i + 1)
8 c  _- q1 d9 N  }" ?8 d, m0 a8 u$ g
]- b2 H' W/ _$ Z% P, @9 d
let credibility-i-j-l 0
) w* a, ?8 l& m7 p& K3 v& v. K;;i
评价(jjl的评价)
1 L7 @0 G0 G$ z' O1 n3 \0 J- V; zlet j 31 z& @! F$ U* r2 s. Z/ T. I1 b$ j5 v
let k 4
4 P2 S) P+ ]2 C7 j* E( C, x: Lwhile[j < trade-record-one-len]6 \, t0 R3 k8 p2 X5 n3 y
[1 w4 j1 F( p% W5 n
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9 v% c7 r+ q. H8 W/ ~3 T
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)
6 n; c/ i; @! |set j
$ H+ U+ h2 ~6 ]9 `6 p3 x/ g( j + 1)

# T2 q% y+ h* L) K8 P3 e( G]/ L+ c+ T) T8 G$ N& c0 {/ w9 u% B
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 ))
2 G* c$ C3 }( r9 |
+ \/ c  k3 e6 ]% [& m/ E0 ^' Y7 |
, w- X! G! N! k
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, G8 }# c3 R  R/ Z) s/ A;;
及时更新il的评价质量的评价
9 ^. k6 `  e' o; c9 bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ], h. a, t* I* G2 Z, z
set l (l + 1)9 N0 l# ^3 b: w1 u$ R2 u& y
]
. ?" z( _$ ^5 H5 T5 v! A' zend: M, L/ O- i- F4 N: N

1 I) x4 n3 x, l  U- \to update-credibility-list1 A+ C! D% o4 |$ A$ r
let i 0; X6 K, \6 e  e1 p+ G( w
while[i < people]5 Z( `* w& x, [7 k9 W: a
[
1 V% w- L: Q! T7 Y5 C9 Elet j 0" i- F# _* v( t8 A: ]
let note 0
; y) J8 T& U( dlet k 0
. S7 k. t  O& [;;
计作出过评价的邻居节点的数目* x$ r3 d7 L; J
while[j < people]5 W- v' D8 F0 j
[7 I* F( ?- {  c2 w! m
if (item j( [credibility] of turtle (i + 1)) != -1)& O  a  y2 f+ _9 e4 e* E  ]  n
;;
判断是否给本turtle的评价质量做出过评价的节点
  L3 E( |2 b& a7 }. o$ Q[set note (note + item j ([credibility]of turtle (i + 1)))
! ~( }( U$ }0 _: g5 G- B: A2 F" T;;*(exp (-(people - 2)))/(people - 2))]
) C& g; k! q/ }
set k (k + 1)
+ M" f8 W$ x# O$ g: O]
2 d. R, N# H6 G- Z* ?; lset j (j + 1)( r* O0 A: D2 Y5 @$ @  U' D. \% d
]9 z# I( p9 l" X8 ^
set note (note *(exp (- (1 / k)))/ k)) W$ c9 P4 v1 d3 d- H7 J& I( I
set credibility-list (replace-item i credibility-list note)6 a, N4 J1 e% p0 f) [# a- N" m* {
set i (i + 1)
5 b, U4 _+ F% @% |% I0 F]4 q3 y( @3 W1 g3 [9 [" w! Y
end4 K6 X: S9 k9 B' ?7 A  P3 k% K( |. x
5 V* t$ W3 R! }9 R( ~  R. p
to update-global-reputation-list4 ^+ a* [, {) q! j, X. z7 q
let j 0
! N3 \' U0 V( v* `$ b: W/ Rwhile[j < people]
! b3 G) |8 V& a' @% w[3 s0 I+ B. S: f% h7 g
let new 0
$ K7 j$ e! D/ ~& A5 ]3 Q;;
暂存新的一个全局声誉* F  V0 T. I2 b/ v, R' `
let i 0" W+ G- O, k4 V: c
let sum-money 0
+ ~: W9 _5 n3 R( e3 Klet credibility-money 0
$ u7 [/ d" P/ ]! X7 h' Z5 uwhile [i < people]
# ]5 b  ?1 x3 S- f+ F# _/ m[2 f0 Y  l  s( y2 v
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 n4 d& \- |/ d: N2 N
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  Y0 m8 F- ^$ E8 m6 @set i (i + 1)2 G  @  o2 P: R7 y2 g5 e
]
' k& d7 H0 R! l& s; Mlet k 0# s) D! K2 P% ?. e% {/ ?
let new1 0
" k) U! s3 ^5 v; b/ Xwhile [k < people]* E+ ~' Y' t& P& Y2 g- [1 m# u
[9 O- U0 P, N# c! Y% I! ]
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)
7 J. O/ n- M2 S* H, lset k (k + 1)
) f% ]7 @# X* s8 ~' q3 _' K]
# r, _5 m1 M) W4 O2 _7 Oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! \2 k1 u* ?9 l7 w* V  Z/ j
set global-reputation-list (replace-item j global-reputation-list new)
% m/ n' h* {6 g( P9 H/ Pset j (j + 1)0 c& E0 W' i3 H  S' K9 t  M
]
* [% H! C+ |3 J! cend$ r! C- I3 d( N# L& G

8 m5 [7 y# |* H5 ]/ H6 X+ b: D$ `0 R1 E2 E

9 X" y# C  f. E- Y3 E. r+ }to get-color2 F! n! Z* X$ H# M% I
( z+ v( g0 d$ |! r$ Q
set color blue

' U* ^3 g1 |' j% q5 R3 vend# o3 j7 B2 a  W) [2 Q2 o! }
* i# B( w' ]/ c( ^! p
to poll-class
+ n2 f/ D# R  V: ~& G2 z( I' Hend- A+ i( I2 c3 O+ h5 j5 m) x3 B
& V& k) B$ E. Q9 Z2 y/ f; D
to setup-plot1" C# T+ G+ \& f

* Q& g. ?- d8 p% @0 o# a$ `set-current-plot "Trends-of-Local-reputation"

; X6 f9 ^# N6 R# U% z+ [
. v& x! B" T* z$ B' Jset-plot-x-range 0 xmax

& b9 c5 m3 `- F, P6 F1 @8 R& g
. k  s. ^% G9 [+ r0 U! p. h1 Qset-plot-y-range 0.0 ymax
. Q* [8 }" w& i6 V2 w9 `  I
end
8 G( J& B* {2 T2 b
0 V7 E% n' R0 h  _/ O, ^3 A0 m1 ito setup-plot2
" v5 L- l: v. Q& Y2 O9 ?" {
# ^" U5 @! X: D# H) f0 yset-current-plot "Trends-of-global-reputation"
, _8 c+ A, `; R, C

% o8 n( Q3 d3 Uset-plot-x-range 0 xmax
' d! C- t% m6 C( T! c( ?
9 Z* R/ Y1 }# |: O* O
set-plot-y-range 0.0 ymax
! v* P  ~* t( ~  Z! C* T( r
end/ L- Z8 u8 i' R

9 a7 F, r: ?8 fto setup-plot3' R0 k/ Z, c  p1 V* h' n! f8 n) g" a
2 i( |5 l. `' }: E; E
set-current-plot "Trends-of-credibility"

( N2 K' M2 [; {4 [: D
; M7 p  M" v& {& e7 Mset-plot-x-range 0 xmax
7 u" {5 t" ^, w
3 E1 r7 x* Z6 Q% f0 c) t
set-plot-y-range 0.0 ymax

/ `! A8 Y2 a9 K8 ^' kend4 t7 j* `% m$ p+ K

' A( b5 U$ |$ a* `5 I7 nto do-plots
8 S/ ?" j2 x6 x/ l7 tset-current-plot "Trends-of-Local-reputation"* `: c( s! j* _9 W8 v; |$ g6 h
set-current-plot-pen "Honest service"
5 |  M, |5 d' y  H* yend
% ^1 k2 w5 m% _7 h# n" o
! T/ h. ]; D5 H. z; h* J# D6 y[ 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+ C& Y; \9 m
0 {' D. D, b+ h- }6 Q( 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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