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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 ?- t5 f# H, o* ~# n( Xto do-business / N8 j* K' W* S+ m
rt random 360
1 x3 G  Y! g! x/ N$ w- D7 K fd 1$ W0 i9 a$ ?0 R4 b; d) Q5 Y1 a
ifelse(other turtles-here != nobody)[
) q) D" ]+ t5 e; t3 J5 R6 ^   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 B  W1 M( x: ]( u0 B
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" e) [* k0 v: j   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! h) [; a+ z/ z   set [trade-record-one-len] of self length [trade-record-one] of self
! ^- \- }0 R1 z' r3 m# T1 a   set trade-record-current( list (timer) (random money-upper-limit))1 @, S5 u0 i' h  n

( G2 S$ C6 m3 z$ B. t问题的提示如下:% W3 ]2 U( B" e$ E9 V5 v9 {

7 z  I  k1 Q' C2 ]& H# nerror while turtle 50 running OF in procedure DO-BUSINESS
, ^# e( H: B7 }0 ^, c4 J4 n  called by procedure GO) x! ]( w7 G9 ~
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' t& d/ Z1 r0 h" ^6 w7 A: e
(halted running of go)
" e* N  [" U6 F) v5 }
# k$ m* q$ R, y3 t2 P) n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~~6 o4 Q5 p* s  J) a  B
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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参与人数 1仿真币 +30 +2 收起 理由
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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教- L" ?6 i# i  P: w0 Q1 `
globals[) }$ l3 W: t0 s% d7 f' a% B3 B
xmax
9 M5 a- z% t( rymax
( N( }% d# z/ ^/ H* y- |. @4 S: b0 ]global-reputation-list
3 Y/ B, J* k$ H8 E+ [; O1 r: T) I+ }, @: R& I9 b5 m
;;
每一个turtle的全局声誉都存在此LIST' Z; s3 v- V) ~# h6 v- q. o
credibility-list
( ^! C! B' s8 v: V4 n;;
每一个turtle的评价可信度# U  m  }. e: }7 O7 e& F
honest-service/ [. C: b' s# M; q+ p  ^/ I
unhonest-service/ z6 R$ I9 a" ?. E& g4 ^5 \
oscillation# [4 P% r' S) H
rand-dynamic
" d2 X: C: G  s2 i  w  f]
+ _2 r! y/ M% ?) b: `5 u8 R+ M) Q/ A2 U* k; W
turtles-own[* m: V8 o( N" }; E9 f
trade-record-all* y' X' B1 Y( C  ~: _) ^
;;a list of lists,
trade-record-one组成
$ P4 g' Y6 T- \5 b# A& W9 J0 Atrade-record-one; g& Q* [  T' E" 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
" `1 ~% R. O' g( s5 J  p5 g
, d% T  S+ x& o2 K;;[
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]]
3 W1 v& @& R. |4 ]+ Ktrade-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]
  \  @5 o) _; s2 \: l9 h, l* Icredibility-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. _: ]; j' z& n4 C0 N5 P
neighbor-total6 r6 _2 ?$ |( y1 {
;;
记录该turtle的邻居节点的数目. ^1 w: Z4 d4 [, {4 v6 ^
trade-time
5 v- f2 A/ l3 P" Y" P. s+ j. N;;
当前发生交易的turtle的交易时间
6 {3 L' I0 t$ Wappraise-give8 r/ k2 J  j! N( v& \+ s4 p
;;
当前发生交易时给出的评价
& m; O1 }% e" t, E# tappraise-receive
1 x- Q, Z" w" o! C;;
当前发生交易时收到的评价$ \8 ^. q, D' Y/ {$ ]: `; }
appraise-time
4 m% h  d4 i( f4 l" W( q;;
当前发生交易时的评价时间" o/ ~2 Y* m0 h
local-reputation-now;;此次交易后相对于对方turtle的局部声誉! V0 O# Q0 l/ G+ q' ?
trade-times-total& _5 y! g# N& c
;;
与当前turtle的交易总次数' [8 d2 X$ n2 r% `
trade-money-total7 n+ c9 _$ _) I2 a1 V
;;
与当前turtle的交易总金额
+ b$ n2 }2 \$ X8 llocal-reputation
5 R! C. @/ E3 C7 p$ Y, S: w! _global-reputation
* a( Y0 J, _4 n' ^& ]4 wcredibility
1 i8 V  A+ x+ Z6 `6 P9 J;;
评价可信度,每次交易后都需要更新3 z$ b/ ]) K: o+ t  u! m3 L) d
credibility-all
9 b- c* b4 O+ K% y' r3 J6 _/ T;;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 N4 m4 o' m& d3 R

1 X, }2 ~* z- n% X;;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0.50 W- r( j% ~0 c0 O$ v: Y- X
credibility-one6 [1 K/ n" s) O$ g6 ]# 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
' v& M+ j; F) A  Cglobal-proportion1 K- u! z5 g) ?9 J9 {# t
customer5 q  U) U7 c# `, b& Y# q
customer-no
  y* }1 f# S( h% q5 atrust-ok
6 e9 {, Y4 w6 R  e# l" Z6 i5 j& [trade-record-one-len;;trade-record-one的长度" Z: Y: J. v. ]! U1 T1 P4 r3 b. ~$ H
]+ ?! z8 J5 d7 [$ s% I( R0 D

) s8 \5 t5 r; `' D- q. K;;setup procedure
7 V6 Y5 T4 G- v" }$ f9 H7 M* S9 C/ ?5 v& K% b1 k( S, q4 O
to setup
) b' C7 R& i+ ]4 \9 G7 y1 z9 H; s! B' o3 w
ca
1 L2 ]) }" P$ K3 d
9 X; o& G, s# c' X& |& _
initialize-settings
9 v1 j/ e$ y* E  \3 D8 \
- h! B) N, V- X' C# d0 w0 j: D
crt people [setup-turtles]

7 Y. L1 d) T, q* L+ k( z! K% I& o! R/ U" n
reset-timer
- p6 [4 [+ h8 v9 h; A( |

) G8 i6 O3 K, q8 J" G& V2 u6 vpoll-class

' u* e4 c- x& V! N3 ?1 U6 A. `6 A% x! X4 O0 g
setup-plots

* W8 }. L, G. B2 t5 a  r; |' b2 Q  c9 W% A" r
do-plots

: |$ W  g. `/ l/ B0 mend
& A* u# l: M% ~& U9 T: X
; F4 ?: ?* k9 B5 K/ Rto initialize-settings
+ c% V0 V- m( e0 s) V' s
$ \4 i. u  t4 `4 f! E* g3 _set global-reputation-list []

0 F+ w, ?# [1 \! ~) n; b0 c+ d3 N. S; f+ Z* A* c- \& _
set credibility-list n-values people [0.5]

( {' S8 r& A. ~  A6 J* m; ]9 P4 I8 z% E7 X) O/ y
set honest-service 0

' N3 }9 G4 y4 z) ~( p) ~
: L. {# Z# |" ^9 }; n7 gset unhonest-service 0

# H. C" V# W# Z1 y
7 j2 T! e0 d9 K/ C; lset oscillation 0
2 U8 v! \  D' i+ s# u& i
" z6 u" w5 Y0 z! m2 X
set rand-dynamic 0

& |6 c- o3 I5 E$ S" p8 t1 s6 T) Jend
( E) B: H6 h% e: |/ R3 m; \8 N8 Q" B) d$ c9 a0 z! l
to setup-turtles
8 g  O2 \6 E# L9 F% b3 a# \5 q: q9 ?8 C& Kset shape "person"
' B% h7 [1 }! q/ Ssetxy random-xcor random-ycor0 v4 ]- u' D! z  [9 c
set trade-record-one []
7 l; C1 j- K% x) j
. R4 P: ]2 {' D0 J4 g8 w/ w8 C, \* N
set trade-record-all n-values people [(list (? + 1) 0 0)]
( h. M9 j# R; N7 W0 z* Q- ]

1 i, ~6 E" }. t2 z+ C1 Hset trade-record-current [], T- m% d. x9 U
set credibility-receive []
5 ~# t" j! e& F5 Sset local-reputation 0.5
- ~6 Z) C4 G# K1 Y5 i8 Tset neighbor-total 0. H$ i2 T8 G$ ?! H, j
set trade-times-total 0! C, i4 x5 x* Z; I5 `2 ^2 _( A
set trade-money-total 0# X7 j+ B9 A- D0 d% _0 `4 x
set customer nobody+ a: d2 |8 Y, P! A
set credibility-all n-values people [creat-credibility]% m) j( Z6 }) y+ P% U
set credibility n-values people [-1]& j! ?! A+ J) e. K
get-color
8 L4 \5 T% {  w- u. F. q, c6 {

( l  `" A/ e. |1 Q- zend# [% j" ~0 S5 r, e8 v
7 ^9 q* A3 d7 P  {) w, K' G# E9 j$ a
to-report creat-credibility; f6 _$ n" Q$ F
report n-values people [0.5]
" L' l; w. {- `& f; N1 m2 p  qend
! b: n1 m8 y$ ^) S: }9 e! X$ [$ U. U% @, A4 L4 g/ G; u
to setup-plots
% s2 j2 P3 K# B+ y
0 }8 P) r4 y6 Z' J+ l7 Yset xmax 30
: [2 @' O; O$ Q+ r9 b

& U/ I# r. @" p4 Wset ymax 1.0

' s. X$ N) A- C# o5 `( t
- x! }! ^; G% l0 ^clear-all-plots
* ~" p- r( o) D; p. g* j4 x

: @$ f$ r2 l9 z& u, Dsetup-plot1

0 {9 r1 w6 `; e- F9 l
* n; \/ l; t5 D, K. p/ gsetup-plot2

0 I. U& t' f& ]! a  _9 @
& F4 |6 h" ]( }% H0 z: V6 }  d6 m1 ssetup-plot3

: }/ X  f8 X- H9 X( B' l3 Iend% X3 `" w4 X7 S

6 u0 l( J& h; }3 u4 ?;;run time procedures
" z$ h4 t# F/ z5 ]
9 x, d; s6 I0 q( }/ ]4 X3 @# Q& o9 kto go. z  `! w- D: @# {5 ]

# Y& g1 K6 f* e( ?/ @1 o" q' Hask turtles [do-business]

6 ^* T! h  R+ L0 ^& eend
3 ~/ u" r  ?9 w" }0 N+ S- u1 @4 q2 t# F
to do-business
: n, p; T5 p$ U  y& z
0 ?" \% e( l. G

, e' j/ h: ~1 f: {rt random 360
# ~% ~2 e) e. J! O) R7 n1 n2 v7 N# W
& V: F$ F7 N6 O" V( m5 P+ z9 z( H9 g
fd 1

, c6 U; f+ \! t8 v* ~* C# N! N4 J: y$ H
ifelse(other turtles-here != nobody)[
5 ?9 m" @$ d, O5 R! w/ {" _

) j  Z+ U, [- i. b1 c: Fset customer one-of other turtles-here
3 j0 u! a5 {/ ?4 }. A  q

( m) r# M- E  h& o4 e" |2 ^;; set [customer] of customer myself
* n# F' F6 F& P. k

2 E2 p- X# p8 C( Bset [trade-record-one] of self item (([who] of customer) - 1)8 P, y+ I$ A& ?* x9 y( d
[trade-record-all]of self9 W' \& S. O8 o; j# [* Z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 j. U7 P# n! Y! W

8 C5 g3 L- ]# {' e" L" tset [trade-record-one] of customer item (([who] of self) - 1)( b' k9 d' D3 L% d! n
[trade-record-all]of customer

9 L$ ~  J$ E0 m) l6 A( I- N
) _0 V" ~3 i+ Lset [trade-record-one-len] of self length [trade-record-one] of self
8 x% c% U' a" d
1 l6 D( C- g* \0 E6 K
set trade-record-current( list (timer) (random money-upper-limit))

1 T$ W4 O2 d  S+ J0 D8 k
5 n+ P8 ~/ z/ h0 `. j* [3 @ask self [do-trust]/ k0 f9 x" G: c4 W' Y; i
;;
先求ij的信任度
5 y1 K% I  H! e) }* B0 N) O2 j% z6 N, B+ @9 i7 n9 K! s
if ([trust-ok] of self)
7 \; V! J4 h0 u, s: {1 M. I;;
根据ij的信任度来决定是否与j进行交易[3 B4 F$ U8 Y' _
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 ~0 t- F  q( d6 {  @+ \% r) K5 M9 d  d  x$ x# Y
[

+ d; P! e/ Y! W( M  g
" h7 J( I% g. A/ H4 c0 vdo-trade
# _- A; B6 x3 _* V! C% g

2 T+ y' M2 V, q$ _6 V# ?' Y: a2 O4 W% _update-credibility-ijl

0 b: b+ ~2 c6 T9 G; x  a! U. a; i7 O/ f$ f& P* ^
update-credibility-list7 S% N$ }1 F9 `) g
6 Y1 i1 t  U( e$ K& R
7 m- I' u% U8 I) |
update-global-reputation-list

" S4 L( f$ c+ X
9 r7 B+ `6 O& K7 e8 V! kpoll-class
/ V& S/ H5 x; X" m& N3 L' F
8 r9 W9 @5 C4 f
get-color

) d# m7 m$ V/ y. m% c2 T/ D( y) v
# q9 j5 v0 K# h! {" ~+ j0 p" H& v]]
& Q% [: G# j3 A5 ~$ C/ `8 G( @9 P
;;
如果所得的信任度满足条件,则进行交易0 v( {  N' a6 D+ @" p- F; w. F6 @
! C1 q* r- C$ u" Q
[

7 k. l5 y0 y5 E) x. J  V; s! A( t, L! G5 i7 `6 K4 u3 c4 x+ X! g
rt random 360

& g# H) e" J# K) s
& y! T' n" z- v% O# `/ Ifd 1
+ c' n9 B* b6 Y4 P2 E

! F5 Q( c- |, ~9 ]( n]
# |- [" m2 K" Y: v, Q: G. t

/ U: U$ P1 Y6 ^8 H8 send
  l4 ^! \4 I" L' L
- p, o/ ?5 t; M
to do-trust
  Q# r1 O3 i& o% V- cset trust-ok False
9 W, L$ e2 i8 }4 b4 j0 @" N+ |8 m# i, h5 F

5 U0 z0 {3 ~3 Z4 M4 v% N( tlet max-trade-times 0/ X$ M' N( d+ j: _0 ?" U4 R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* R% w6 H1 }% d/ B! y) m$ H0 \let max-trade-money 0$ @' D- l4 [# @6 h. f% f4 Y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 J" J8 W9 ^7 u  ~& R! a5 [. 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))
" E- t) K2 I% z  P: H/ x! R4 Q" D) A7 C8 P, R
* q' t& r, U; ]9 }+ V6 M0 F
get-global-proportion- U0 A& Q: E9 x$ W4 c) ^' U
let trust-value5 E7 u# _- \( A, a3 {
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)

0 ?- ]& w8 e$ V7 L  s4 p' ]if(trust-value > trade-trust-value)+ S( h* j' v9 R; h
[set trust-ok true]6 _2 ~7 X  B/ P3 x
end  h; c) G. t6 E2 {5 z" ~1 X0 C

/ t3 c& k" b3 V1 Y3 uto get-global-proportion
2 A% y7 i/ J& Z( F7 w' Difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 b9 T- k1 j. O3 a) a
[set global-proportion 0]
! X7 G3 v  f% M, B  s5 G[let i 0
) e4 a2 k) M; c0 s) n/ `8 Slet sum-money 0
4 z' f; ^" v) K4 p& I! }4 i) Ywhile[ i < people]
6 E, L( V0 ^4 s* t! Y  R[
( C: [3 B5 S5 p0 O1 Y" Xif( length (item i
' h0 K; P3 U; E& M. N* j' P[trade-record-all] of customer) > 3 )
9 @& z. t9 J: g) X3 A
[5 P5 d+ E/ M* j; h) U  `  o
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 q1 _6 z8 D/ \% O" J- p; p$ ~
]
2 T6 o, j" ~  a* z  []
! l" }; g6 ~" u& Z1 i( x! |3 alet j 0
0 \6 y" B9 r) P$ C5 u, Xlet note 0  q* E( f% u5 y
while[ j < people]! \% s8 u- l7 L- s9 o: I* i" b2 y
[4 y6 I' L! T+ {0 P; ]
if( length (item i' Q  e. E, J& W. G6 i
[trade-record-all] of customer) > 3 )

7 q. v4 y0 v4 r: [( s" T/ P' a. U[
! c9 |9 F/ S* G. F2 \% S! U9 _ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ ~) ^% Q( K( a6 x0 v1 L" P
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; z7 ^2 _7 {* N! e$ K; b[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ D' i3 |) [: Z" r  x]
5 S8 u, J' k9 \! []* R8 o8 l1 F( w: f3 |4 A
set global-proportion note
5 E% N3 A. Q, p; o' A' r- {]7 y( z8 g5 @- m! C" C
end
" E( m# U# W0 E, p( D* L2 j( f. p" @$ x, _) c! C+ w5 f3 ]
to do-trade
4 M: K! p1 x: i: S;;
这个过程实际上是给双方作出评价的过程6 i. e5 a) v, J1 b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 ?2 C: ]5 a4 lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- M# w* g/ ?* Aset trade-record-current lput(timer) trade-record-current" Z1 G4 g8 Y  }8 a' I. t' U  i: D
;;
评价时间
! h2 Z6 W  z# r2 |8 ]. |ask myself [
% i% H8 t. ]' c: Aupdate-local-reputation
, q2 b: r7 U! q$ j; J" C5 Kset trade-record-current lput([local-reputation] of myself) trade-record-current
. `5 q- H- a1 S8 u" V' X/ J]: u7 g( m4 Z% t5 n% s
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ }( S! j$ r% n% L0 V0 n;;
将此次交易的记录加入到trade-record-one  v; E; r1 d/ ]: L5 k
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 I2 j& n5 N' o7 X) a; D: }: Flet note (item 2 trade-record-current )
% d  l1 e! k8 N1 Y' P; @& Q0 m* u" Xset trade-record-current9 C0 Y8 }& k5 Y% N
(replace-item 2 trade-record-current (item 3 trade-record-current))

& U/ D7 H6 K( o4 t6 u# ?2 Rset trade-record-current+ e0 p& m: N" X. h
(replace-item 3 trade-record-current note)- d. O1 \( A3 B. b: ^
& E/ e  A& R2 ~- q7 K

! o$ y4 I- G  Y, Nask customer [
8 f) @6 X) ^; R, N1 lupdate-local-reputation0 K/ L* b" c0 x! C4 E' M/ O
set trade-record-current
6 G5 P7 ?# n/ `1 ~! ~(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  U# f# H6 Q, \; n# u' F( }]
6 K3 [2 w0 [5 K1 u4 v7 Z. W; \  x6 O- d3 U
! a4 _$ m  A$ s. z& ^  P4 D/ I" }6 d
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ ^6 r" y$ t5 O2 Q

+ S/ a5 T8 ^; Y+ F8 k- y( s& yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 N/ ^4 k9 p+ |; {
;;
将此次交易的记录加入到customertrade-record-all% ?" H* b# f$ \) q" B
end! |3 W/ y6 C7 ?  \0 A+ d5 t: X% \$ X
) E8 V2 n' b8 ~# c
to update-local-reputation# S( P- M) e  K6 K
set [trade-record-one-len] of myself length [trade-record-one] of myself
6 r" o. I' n- y. R+ a  y: k. X* Z, r. t

% s6 c3 B5 C: m9 Q9 Y+ ];;if [trade-record-one-len] of myself > 3

3 H3 T6 C: z" M( Pupdate-neighbor-total
% M. v& E1 x$ a, k8 H! R  j( Z( y;;
更新邻居节点的数目,在此进行
# T1 P! E6 D7 s/ L/ |4 Hlet i 3* ^8 E% ^( X5 E& a, ^8 y, [
let sum-time 0
& R6 A/ c. c* D0 iwhile[i < [trade-record-one-len] of myself]
' N' N" B2 h' k- ^7 g[
$ C- c5 j6 v6 Q1 v$ m$ |4 U1 yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% F0 k5 ?  l9 ^+ p' B, d
set i
/ w$ Z# q, M3 b5 \, d* r( i + 1)
% G3 A1 o8 s% r) F" w/ M9 m
]
6 a$ e$ T5 k" T  elet j 3- \! g7 a/ Z+ Y* q: ]; x! G7 V
let sum-money 0$ L( t; F6 Y# O
while[j < [trade-record-one-len] of myself]
% n) T5 Z  i, n% `[% J2 x1 t6 k' v- r1 j. N' U# A
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: W- ]9 Y  u, qset j% a6 e  c9 G# |
( j + 1)
7 Z6 v. O  E$ c, m8 f
]
4 o3 w' H7 \" s$ rlet k 33 G1 ~/ r  k# _5 }' W9 Y
let power 0
* x3 I5 k( x) \4 l. R/ y! glet local 0
4 G) s, k( A2 R0 x# N6 Zwhile [k <[trade-record-one-len] of myself]- d6 `; w+ U2 e+ W8 o0 M* \4 b
[2 t; F, v' e7 `4 ]* C8 {) _
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) ' [6 s$ Y' _! q7 u( h& F+ b
set k (k + 1); G, G) }* K  A) O0 A7 m1 a
]) k# I% I. z! L4 j0 z
set [local-reputation] of myself (local)
* M3 a) f) L, |( z% Gend  K" B9 |. q. g2 n' M% E

3 b; Y7 i0 c% Nto update-neighbor-total6 |( Z4 m% w4 H) V! G% r

( A8 P1 }! R! m0 ~! S9 }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  {0 p' S( H. V1 g3 x( B

8 ^4 @' j% |$ O9 n% _3 `

1 K* ^( h- ?* J. Y" t% x4 eend4 H; [; `% t* L

( I' m! V1 S* U! Z' uto update-credibility-ijl
$ p  x! [& P2 }* y; I& R: z: ]* y, l7 v3 r) g' l5 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。
  |4 O" |7 J7 W7 g9 o/ `4 Alet l 07 _" s8 \5 z* F
while[ l < people ]
, S) P7 K: v- d- k;;
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
) p- Q. K% U! m! }5 H[
* l* `; F. O9 B& C7 c+ A5 b! Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! E: Q* ?: G. b) @+ b# kif (trade-record-one-j-l-len > 3)
; O; t! \( I  b# ?[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-one9 w# w( I- S3 n
let i 3* c& Y+ X1 t. s6 N1 i: n/ n
let sum-time 05 U; [0 s- L+ G  P' _! N
while[i < trade-record-one-len]
- z9 M# i$ F# n) l3 b6 ^[
2 a; a4 O4 q$ n$ g! b% H1 o9 Tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 S1 ?! A& A0 T4 O) G/ X9 z' O6 Eset i/ V5 w- W$ o1 E( T
( i + 1)
! v4 K7 ?4 s) _4 y9 M/ K
]' L3 U5 j" A. b
let credibility-i-j-l 0
% ~1 _- ]4 |9 S$ M6 I; t! k8 J! ~( z3 y;;i
评价(jjl的评价)4 r  @, @5 z, e! B
let j 3# c% ]: i) Q9 C/ @$ \! K2 ?
let k 4- O5 @. U- Z1 i' n
while[j < trade-record-one-len]
' f7 \* z& N- i[
1 f9 N8 W1 M8 ?8 H) `6 B3 ?. Wwhile [((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( F& n, Y/ }2 w' x0 y' l
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)
1 m. I: K# z! mset j
+ f) o* C/ {# T( j + 1)
% b5 ~9 G! |! z* G0 V
]
1 ^& W( ]0 m* i" F/ nset [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 ))
& M5 c- p! Y9 `7 q
  P# Q8 }% {9 @. M

2 E1 x$ i; l( O3 D+ u; C1 Flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& {; j( h" `/ ^;;
及时更新il的评价质量的评价
! }4 P" d) A; |( _' Tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 l- b* l9 [) |/ p* r1 u
set l (l + 1)
) [0 s2 P7 z: o/ q3 E]
- x5 g8 q5 o8 g: J' Fend5 Y0 }8 ?5 N& H, c2 i
) t5 F9 g" g, a  F. y& k" b
to update-credibility-list3 P' B; g2 v4 w
let i 07 w4 n5 V/ }9 v3 ]9 B# @( o
while[i < people]
) a0 c4 ]) Y3 B) D3 y- w1 x[
1 a3 w; P/ Y5 G' z  ?& e0 m2 xlet j 0
: G- Y" \- e5 Y4 {( clet note 0' w* `0 X/ ?  F: ^% N3 M
let k 0. h  Q- B* ^, ^/ {
;;
计作出过评价的邻居节点的数目4 j; K8 M  O3 p) T5 I3 l
while[j < people]/ z  A3 T0 y5 d/ v
[
9 G9 P0 z; a/ m7 j4 K% `if (item j( [credibility] of turtle (i + 1)) != -1)' h, W; ~: L8 [2 D
;;
判断是否给本turtle的评价质量做出过评价的节点" T5 u2 z9 ], E
[set note (note + item j ([credibility]of turtle (i + 1)))
  l1 [% t2 d* ~- c;;*(exp (-(people - 2)))/(people - 2))]
: T2 O6 G$ E+ B" r. o) g
set k (k + 1)
+ \6 N4 Q1 {1 b- H1 A]
) E4 }; I, u  F7 y, B$ kset j (j + 1)4 w6 U7 q# T- B
]
8 P/ W8 |8 _% oset note (note *(exp (- (1 / k)))/ k)8 T: Y9 _- ~8 k- d3 t5 b
set credibility-list (replace-item i credibility-list note)8 R' T# ~8 i; v- n2 Y. }
set i (i + 1)
+ h! Z# u1 J3 u) M' \- m3 e8 v]
, u: R: v# I& K, bend
. {3 \9 i1 s( u4 T
% R# \9 }, |$ U% E. {to update-global-reputation-list
& @; M7 a$ y2 M/ g( g6 H- ^let j 0
. \: c  E, {$ L, k7 w% `while[j < people]' S6 a7 g, r2 `, T9 D
[0 i& B4 O1 N3 r
let new 0  Z" U4 s* c4 m
;;
暂存新的一个全局声誉& O- A7 f& U2 J  c; ^* o/ C/ W" T
let i 0' W3 K1 V6 f- Y6 m
let sum-money 0+ X, Y4 Q, c8 ^' W0 M9 f
let credibility-money 0& X  P9 a7 Z  l/ K3 l* p5 V
while [i < people]
2 D9 R( B+ d6 ?5 Q' g[' s' t- I8 V# c! n8 i
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& z2 h, q' _/ z  xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 v" v: Q4 h2 [* Mset i (i + 1), c$ D* j% ]) E% |1 F) S# |! ^
], ]4 a0 u% o( F* w
let k 0
) [4 r5 ^* i( ?  H! V1 blet new1 0
, X& ^$ I! O# A5 K+ Iwhile [k < people]
  o* [4 z$ ]# e! q& V' |% R[! O) _3 X3 j- v. r1 `* h
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)
* [3 B9 ~. J8 y+ N* sset k (k + 1)
. v0 d- O6 k" M/ q) K; r], K; t9 {6 w$ h9 R
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ S. [. t1 r5 z$ q) m) j
set global-reputation-list (replace-item j global-reputation-list new)
( X! d, R1 A3 {5 ^/ D0 uset j (j + 1)
' S/ g: a: u  h( i7 {" Y]! d$ J% t8 D6 [# z
end
$ x( u; @) I- F! b. a. {5 B% T6 v) X& L" m2 ^$ w
, E. z' N+ I; K9 z+ a

; j" p0 R; x/ |' Y9 Pto get-color" a* P: Y; Q, ~: w5 X) R6 Y: |
4 W) M% B0 K' w0 d
set color blue

  p- e+ M& y1 g9 o0 I2 ^: ~end* n/ f( w' F0 E; Y' A

1 d* _- C, F  m' e4 x$ q* I. w( z) Mto poll-class
! Y. P1 A/ R+ O9 Gend  u/ @7 P& _, i

8 k' @" @, g. w# D$ Pto setup-plot1" s; b7 p, s. ]) R/ C" W

* N9 A/ `% i7 I; vset-current-plot "Trends-of-Local-reputation"
2 m: m$ c3 R3 D. N. ]5 @6 T
1 u) U# x2 ]6 h- ^$ _5 y
set-plot-x-range 0 xmax

; ]/ \5 n/ G4 _9 b- z
) V% `1 D5 Q1 R2 lset-plot-y-range 0.0 ymax

, b7 _, G7 Q1 b0 f9 jend
+ K- ^# g0 }7 s, F" v2 I
! J5 N) g- ^, Q! p( |9 cto setup-plot24 {6 M* J' A, l% x! T% g

! {) u4 t4 Z. Q6 X" H2 K: w& Sset-current-plot "Trends-of-global-reputation"
3 P  L( Q5 c/ w/ m
' {# I3 A5 H" N5 N$ X4 \( r$ ^% M, ^' F# j
set-plot-x-range 0 xmax
8 J3 r( w! r" e/ P# F

1 o( L5 q9 W: r# dset-plot-y-range 0.0 ymax
! z) }, p+ h- W# `! u
end: f9 s3 \3 X% h

0 {, q. w- g8 F8 }/ z% Mto setup-plot3$ J, b; \# q% \/ O# I" b# E& p( l
. q% |) x1 P- I' d; h: a
set-current-plot "Trends-of-credibility"

! O$ u6 h( g# e5 A* w3 B  |. F  V! U
set-plot-x-range 0 xmax

1 q4 x0 q3 F! ]% X0 g# h0 g
& o& H) C2 Q9 sset-plot-y-range 0.0 ymax
0 O+ C5 \# J2 G. ?/ A
end
2 C5 z) l, X& U
: Y! A8 p) y9 m0 h, C0 D) l& wto do-plots, R/ P: Q, h- q; m/ v4 t
set-current-plot "Trends-of-Local-reputation"
; w  x/ E& F% S* U( cset-current-plot-pen "Honest service"6 @( ^4 T  E; r/ z2 Y
end7 ]3 L* r1 F* \$ l) @8 U2 x
6 M5 X0 F1 x- D) B- \, F
[ 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.2 [( m, u' h+ f' x# u

; @# z* q4 [0 |  I: x1 i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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