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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:
7 L9 k, m( v( y. q- [* bto do-business - ~* x* C3 N0 U' _# z4 t
rt random 360/ `( {2 F8 ^* M& U' h' G9 h
fd 1  s- |5 p# Z7 u. d+ W: p$ f
ifelse(other turtles-here != nobody)[
) o- l: t1 A/ ]- e+ S   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.
0 l5 H7 w" z# d   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! l6 ?9 E1 h0 Q% l& T1 @1 L9 Y2 i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 X9 b( z6 A9 ]
   set [trade-record-one-len] of self length [trade-record-one] of self9 y8 Y/ [# Z) g" q7 }  }
   set trade-record-current( list (timer) (random money-upper-limit))/ d9 F1 M+ F% d$ z; ]- C" v, X
! s4 V& p) W0 i0 v+ X3 @# p. V$ y  Y
问题的提示如下:5 x3 _7 r% x: U

! R  {' D4 e4 ]- ?* S& x1 \7 T$ z" `error while turtle 50 running OF in procedure DO-BUSINESS; F2 ^2 }) K. c
  called by procedure GO
4 y2 ]# k: ~0 g2 D/ f/ J0 QOF expected input to be a turtle agentset or turtle but got NOBODY instead.+ ]; a% j7 _1 b7 H/ \  H: m! U8 C  U
(halted running of go)
# N; I' R1 v2 s1 a9 d  _* l
, J8 V. L" G) J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~~% b) [8 C; o9 M  ?& k( y
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* s9 T* ]3 b% m$ H9 @
globals[/ S* m& w6 ?: O, R4 n. E. s
xmax
: C1 z7 S  D* fymax3 B, g& l/ K- P8 w
global-reputation-list
! @+ V. p* Y, C# I
, e; w* U) h0 B+ T6 ^, F;;
每一个turtle的全局声誉都存在此LIST; w* v* i1 t% c5 Q( \
credibility-list8 u# l( N! c# y3 q; O6 d( x
;;
每一个turtle的评价可信度
9 [1 f' [+ a) \) |  f" \  [# \honest-service
$ i7 ~4 E) j0 G' D( H0 P$ Sunhonest-service
! f, d) J3 @: woscillation2 }# U  P7 `1 m# C" c
rand-dynamic
. i6 J) y, p1 B]8 N! P- @% Q3 n/ O
/ U; X* Q, L1 ^9 {
turtles-own[6 y, ^) s; c6 W+ a9 M
trade-record-all/ J3 A! d" e/ s% F
;;a list of lists,
trade-record-one组成  T7 a( g$ c: ^
trade-record-one
& c8 P8 U, ]; P$ l( Q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ E& q; ?/ y0 ]$ m/ g4 ]
. G- \' M+ ?3 r& }$ G, L' C7 z
;;[
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]]
+ R3 U( S9 K& B0 {- ^" }4 F% Q( Ftrade-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]
3 u  S8 m7 r8 @+ k/ 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
. P% D% e" Y3 R. T# C0 C" Zneighbor-total& W# J; E, J/ ^3 H2 P: ^! [
;;
记录该turtle的邻居节点的数目5 N5 M; X: U# g4 Q8 \
trade-time  ]! m- A* e: F- z4 ^* l0 r
;;
当前发生交易的turtle的交易时间
2 |. G. X; l% J! ~7 m% Uappraise-give
$ Z" k6 {1 S; @;;
当前发生交易时给出的评价' q9 b; Y. ]+ t) b$ ~
appraise-receive
2 U2 W+ T1 w+ Y6 s0 T  A* Y;;
当前发生交易时收到的评价2 E' K9 B6 h% }6 D7 N$ W9 c
appraise-time7 p$ h. }4 g, I* ^7 V6 A
;;
当前发生交易时的评价时间
. d( f+ W2 k+ `local-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ R# {1 ~0 N* y5 L. Z# n( Strade-times-total
1 f; p0 o/ |! e% l* v$ G4 T;;
与当前turtle的交易总次数
2 n" e: [7 c- m  B4 t# htrade-money-total
% |1 Y# K* F% K! _$ w' e;;
与当前turtle的交易总金额
% B# M+ ^7 o, p/ ?) }+ Plocal-reputation
! W6 |! x" M) N6 X* Wglobal-reputation( H. ^2 I6 A# w
credibility9 T$ W9 ^/ _+ [' a! q5 @
;;
评价可信度,每次交易后都需要更新2 n5 a3 u& g. d7 @
credibility-all* h! k8 Q, m* k1 |/ K8 O. }
;;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* @- d+ r1 U+ ^: O" [

. N; `. L4 v, k;;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
6 E; x6 t' l4 M4 }% S" Xcredibility-one
9 R. F" L5 a! B) Q;;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+ h& m& Q* i1 B" E9 B7 @
global-proportion: O+ w1 L  v1 ?- F- V( H" I
customer! ?! f$ y# ]5 y6 o) T
customer-no2 t9 c- N/ Q5 a3 g/ x5 c
trust-ok
! J* ~$ V2 P! {" t5 _trade-record-one-len;;trade-record-one的长度8 h& S3 h2 N8 n7 A6 u
]
. h+ P0 X- ^6 g& W, _8 Q3 w, C% G1 _2 ?# t; R, i
;;setup procedure
0 ]  u, T+ |2 ?" ]
+ O  K- \( H+ ^) H) S: p/ Uto setup3 ~9 ]( {. ?" u7 \
) H0 b0 e7 `* L0 a% `) C
ca

1 Q9 Z6 G& Z3 \8 W0 J- l- ]& J) V6 D, V% {5 e- J$ b' E6 F
initialize-settings

0 M5 Q  l/ E+ n7 I
. ^# N- {$ k1 k4 `, o, u( xcrt people [setup-turtles]

) P5 f% {; p& B; c9 Z6 p, s, N  R' h. e/ k3 S2 x6 s
reset-timer
3 Z( F- S+ D) `$ e

. Q7 k; }$ s  N6 I0 z" G: @$ Npoll-class
. E; u# N+ _( {! B

/ r, h! o. F$ I1 i! `setup-plots
7 m% K0 |$ x7 A, ?* {1 u. X+ I/ ^/ W) E
2 k3 h0 J: E  k7 g9 T8 l$ N/ R: f, ?' n
do-plots

! T5 [+ d- n3 H" Q+ eend
( z# A8 |( T& U5 L4 X; d# R: u8 `$ d" G9 m; W
to initialize-settings1 I6 g+ K- S- w3 ^& D9 T

0 L6 K  J- N% n: u- H; pset global-reputation-list []
% A' q9 K. b* H+ l. }7 a( @$ C) q
7 g! s' D( m& D
set credibility-list n-values people [0.5]

; V2 ?9 E& M' H! [- R
4 E) a2 @: {! j- U4 Y! D$ \set honest-service 0

" g8 M0 z6 s+ G8 ?0 U  p; `& Y  H. i. a4 t: U
set unhonest-service 0
' ]- i7 d5 b! u: f3 n7 \0 ~

6 U& p$ i/ [( L8 Q' c  e/ G  b  k1 Dset oscillation 0
+ F: d' I' R" W5 f" z
0 I: P5 D* g2 |
set rand-dynamic 0

( E" t1 Q1 p. c1 R- P. H6 vend2 ~6 G1 l! g# i& f* T
+ l# }6 Z5 o7 U4 `9 c
to setup-turtles
& w1 ^' u& X, J+ I; F7 cset shape "person") D. D4 ?  b+ s6 L/ m+ n: r
setxy random-xcor random-ycor
1 R. U7 B1 |7 kset trade-record-one []
# Q  O2 C2 r: c% ~% m2 _. J

4 q8 j) S% F* P/ v6 @: Y0 n* [( e) _set trade-record-all n-values people [(list (? + 1) 0 0)] ' `' F& K! K: J" C: R# r
3 a2 m3 y) \' [6 D5 c# ^0 x6 @/ l
set trade-record-current []
1 E5 y/ P6 n2 d3 J! _) J% Mset credibility-receive [], U2 R+ B: T) D6 j* v' p8 `
set local-reputation 0.5, V% R1 Z4 ]7 q- N  D& W' h7 V. G
set neighbor-total 0" H( B( B9 N8 e8 i
set trade-times-total 0, b/ u& o, P# q; a* E
set trade-money-total 0- Y& e/ ~8 l7 r
set customer nobody* \8 m+ F" S  m: ]
set credibility-all n-values people [creat-credibility]
/ l8 ^0 f" z) p( e' D  o6 y" sset credibility n-values people [-1]
, j. o1 E; I% q/ Wget-color7 V+ ?0 z. i8 a" c: Z  Y

+ V* v3 a( Z% Y( r1 cend% C8 f# U, [( S5 q9 I, p

  K' I* W2 U7 n$ p0 p! v5 {6 J& i3 wto-report creat-credibility
, V( Y& y# \; i' Ureport n-values people [0.5]
1 R8 f8 x( a5 U7 Zend  r" O0 t) Y4 ^8 v; v' q4 Z$ G
2 o% E# h! H: g- }- U3 ?
to setup-plots
' V- K) k; y  O/ h8 G$ h: \! s5 r0 b
set xmax 30
9 B$ K5 Z. |, A2 }8 [$ q/ \
% K/ [/ Y" F' }+ l- a4 k
set ymax 1.0

3 D1 V& _+ r* G0 u4 ~, r
4 I' \: ?% x. f3 M& J# ]clear-all-plots

6 C# v& s: ]2 z% t( K+ p! W6 @( L8 M& r( w
setup-plot1

" i1 v% n7 l3 e8 z5 x  D' E4 Q# N6 T  \* J0 J+ [  D, |7 H
setup-plot2
) T' y% O$ P5 d9 a9 j, S" m( S
; E$ Z" d8 r* N9 g$ r  o; ?" q; U& @
setup-plot3

) x/ ~/ M( a9 j2 L0 t& j4 Cend" [+ \3 h! t+ Y7 D
  s- S( o- P- ~: s! x7 I$ F5 P
;;run time procedures: l8 Z1 J: C. q0 @5 _3 ^7 u2 a
9 |+ B4 E  M# k. e3 S/ s4 M1 l  f
to go! t: a. _0 N6 t7 v& o% [

# C* k; c4 F  cask turtles [do-business]

4 X7 d1 @* r! @# {end* j+ ^/ J" d" }+ Q3 T% _' t

* g" b' Q- b+ `6 w8 Z" i0 oto do-business ! t  }# A4 L% n2 I

; L# n) ?- `. V! a+ F7 V2 P4 G3 N; _& O, C7 k+ U6 q+ ^
rt random 360
3 Z. r) C, m4 _  O2 Z% y
2 h1 s" g* \+ g, _3 w9 f  L; l
fd 1

( K& X: x9 {6 s. Q  c5 o: F4 n
" U" e% T. k3 y$ y! |" eifelse(other turtles-here != nobody)[
  ~( G* g4 N( ~1 v" V
5 Z; t0 K% {7 q+ i' L' `3 P
set customer one-of other turtles-here

, x  g6 T- i9 ]# @! s
' l8 q% r- C' a5 t; |;; set [customer] of customer myself
: R. n- M) S% L7 f: ^
9 @$ _  k" c: l# |
set [trade-record-one] of self item (([who] of customer) - 1)
( X# a# a& D! l( [" ~[trade-record-all]of self, \  c2 _  H1 b/ r* b7 ], x5 i
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- K( t" A+ @( F, \5 K1 Z, c9 A4 R! |' \4 R, T5 n2 e+ @) r/ R5 @; l
set [trade-record-one] of customer item (([who] of self) - 1)' B2 b6 {1 O' u& }$ T  ~5 R
[trade-record-all]of customer

* R6 |: |' E- o& P0 k9 P5 f9 r" x+ a& Y6 m  t1 U+ p5 s8 }- t* U
set [trade-record-one-len] of self length [trade-record-one] of self
: Z; A- Y3 l+ G6 h  q4 k& @) m

4 h% |8 ^5 d, C2 Yset trade-record-current( list (timer) (random money-upper-limit))
+ i; N+ w1 z9 m4 [6 y# O7 S
( C2 f3 v/ }. W5 R' v
ask self [do-trust]0 P1 G( o7 X- J% m
;;
先求ij的信任度, |" s# F8 }8 b' k6 O! A
2 z" G+ O; T" W  w
if ([trust-ok] of self): u6 a; S$ i5 n# W( p. s5 _
;;
根据ij的信任度来决定是否与j进行交易[
; a- W+ b0 z3 u; ?ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ t& w) b: V6 P- K5 s! B. |
- i2 Q4 u4 R' I1 L' Y) C% j
[

( P5 p+ ^0 Z& c& s) J" I5 V4 V1 K2 L) R4 t8 o$ u% R7 N; t- J
do-trade

5 N& t* T7 c; c  j# X2 W4 W. n1 Y7 j( @1 v3 D! `- f* J9 i
update-credibility-ijl
; ^& P4 l. L& ~, F8 M0 {& i2 E! T

* k! i: F& ^) E, C( ^1 b* X2 P9 ~update-credibility-list
' G8 N: R9 S/ K' R+ r1 h

  _, ~3 X& T* i6 ]# f/ t+ O1 k8 I4 B- `
update-global-reputation-list
/ S2 G' D4 G# }4 |

3 [6 j% a/ {; M* J' Wpoll-class
& O7 @/ \  o; _
" ?4 E8 R: g) Q2 c2 l& ^. A
get-color

9 s; X) C& j- @+ m
$ U! _3 v: y+ O; u, X7 E]]
; b+ Y( p, z( l3 ^# s7 @) B- _) y4 V4 ]; b1 T) ~7 @
;;
如果所得的信任度满足条件,则进行交易
" \8 T6 j; D( p( C
' I+ c3 _8 X; t" L* z8 g- `[
7 Q: m% Z) L9 e  K1 F- ^! v
+ R; Z! f  T5 U! ?  Y
rt random 360

6 g" c" X1 ?+ D  b% \8 S% c8 ?) z1 t9 \
fd 1

5 [* [9 O2 n5 c, t1 I+ `  ~
& V* W" O$ ]) ^! L]

8 N6 c3 \  F1 d& h! R0 t
# Z+ H! r. s/ u$ t( N$ O) B8 Gend

( z! O7 Z) @7 [) A. M
$ Q! P; O( C8 Pto do-trust
3 `/ v$ K) x' e+ Sset trust-ok False
. m8 c  I  ]6 @% g! i2 I
) ^) i# q/ B# g' w% Q3 r

: f* D3 n+ S. Q" Ylet max-trade-times 0
! T+ C& D2 b& f( i' xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 [* x$ n5 j5 N
let max-trade-money 03 M4 F# J+ A7 K( X$ c; t
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 g* g3 R! y% c: R5 h% [let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ I7 N5 R& q+ F" z+ L2 \3 B# o

1 l7 T4 k) u0 m. P6 Y* {get-global-proportion) n( _9 m$ D1 ?3 a& n- }7 n0 n  K. z
let trust-value7 ]% I# _& z3 ]! `5 k7 g
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)

4 o4 |  d! R- I( vif(trust-value > trade-trust-value)4 J$ @/ z4 X$ `5 y. j4 K# z
[set trust-ok true]
3 s: C; v, \1 l& L! J: T2 \" Q/ kend* R3 O) W2 D# b" K$ h

+ H( r) t$ g, O. S  r5 J' l/ vto get-global-proportion
/ K' ]2 b6 P4 d& F! n! z+ r! e. _8 }ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! ~* i/ d9 F9 a2 P/ }) j
[set global-proportion 0]
8 o. }$ U% m$ q  Y- c5 @$ e[let i 0
  L* w, N0 b4 v- u- F! n; |4 glet sum-money 0
) w1 l5 }, O2 R. |7 Awhile[ i < people]+ O3 H1 L4 [2 [! m6 }$ Y# a* |4 h
[# f; V- z% J# p; I4 E7 d8 j
if( length (item i
+ \- F. ?- N5 w3 X9 m[trade-record-all] of customer) > 3 )

" @; u6 _0 v% y) Z0 ?7 K[9 q5 {& t1 g' v, d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& I" o9 V! E4 ^" }6 a
]9 k! f2 N' M, {4 u/ o! X
]
& S3 @* Z; D1 v) b2 e3 llet j 0  G- f9 U: U# Z+ F0 y1 r6 Q/ H
let note 0/ B& L5 [2 M' \) S, ~6 a. {
while[ j < people]
$ P4 k+ [$ V4 ?* ^6 p4 |[
' \7 T4 I# n( yif( length (item i
& s7 b1 X0 x% I) B. \0 c& x[trade-record-all] of customer) > 3 )

) V  X3 u$ j: w1 i9 o[
' d5 B3 [% J+ n" G6 m0 O! i: Jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" Y8 N* {" M5 \' m[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) e5 m/ P& ?( h[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 \/ ?5 l9 @: M$ K% |
]9 q, ]7 l0 M! ^4 v+ M
]1 m# r; q4 [8 C. g
set global-proportion note
% i9 m- k9 W$ S8 F]
/ s4 C6 R8 A2 B4 B, eend8 r7 @/ {$ @$ f7 N0 L$ [/ @  ^
5 d( x. l% x1 Z/ }
to do-trade% Z5 D+ K: l+ d9 J
;;
这个过程实际上是给双方作出评价的过程
0 y% R3 l. E. i" G" M3 c+ m/ j- Sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' x' K) f# e+ B3 p3 o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) l! @; B) T$ q- N9 f
set trade-record-current lput(timer) trade-record-current
/ e7 R$ O, D2 w* q% G! V# x* b  X& m;;
评价时间. R7 c" |0 c% a' O+ B" m  m# |/ u
ask myself [
2 o- h7 V( a/ x7 _9 h' Lupdate-local-reputation
, p$ e/ d( D: v2 p5 v( _/ bset trade-record-current lput([local-reputation] of myself) trade-record-current! u, p1 m2 M. n+ r' l
]
1 \& }  h0 @3 ^set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 o& o# C2 c8 |
;;
将此次交易的记录加入到trade-record-one. j" z  b" p' i) U
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' n, c% t8 v5 r: m
let note (item 2 trade-record-current )
2 ^. V  |5 r, P4 R  a8 xset trade-record-current) M! T# W0 s" ~2 ]
(replace-item 2 trade-record-current (item 3 trade-record-current))

3 I5 i7 m0 E! |- Q. m) O9 M7 A4 Tset trade-record-current$ n9 D- x3 v) E8 a2 |' M4 s1 Q* l
(replace-item 3 trade-record-current note)" E) ^, K( m* x- {0 q6 d/ R) k

$ p5 Q- j9 i) ^. _: S% q8 b

; a7 c: _  E2 W& ?ask customer [/ L. O. R9 L! p
update-local-reputation# ~' M0 [. @1 C7 L" U# G+ L
set trade-record-current' }3 e8 V* e5 q  o- p% z& {" o1 b
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 H: a$ l' `5 x9 c2 Z3 H8 E
]
4 c. @9 K$ S; v9 e4 U5 W( q% Y( x0 Y. X# a1 ]# r

- }& u# k5 _& R( o6 hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; T" b+ m+ w. k" w3 @( Z; V8 ~
/ f* G! Z! X' Z7 @) a5 w
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# g+ @# I6 t- k1 t0 d% }6 k
;;
将此次交易的记录加入到customertrade-record-all
$ N7 ~/ v$ Z4 j$ Aend
: V% q+ y  ]) z0 {3 k1 Z4 a. J- G# |+ E
to update-local-reputation
* F9 r7 U' y7 Q+ M3 Sset [trade-record-one-len] of myself length [trade-record-one] of myself( d) h% t% Q& D* R6 }( p

/ M5 K# [% L* ^- ~+ y8 _
& J8 G, t% t1 p* {; Z8 w;;if [trade-record-one-len] of myself > 3
0 L$ ^6 W& N7 u' b9 g+ c" b
update-neighbor-total3 @3 d* G* x, M
;;
更新邻居节点的数目,在此进行/ i8 Y8 P/ S8 l4 O; R. J6 n
let i 3  U. v! D1 J  [6 d0 }2 T. b+ X
let sum-time 02 f4 w" k& d. B; o
while[i < [trade-record-one-len] of myself]' z" H/ a, m2 }8 d* b. d/ o8 p
[7 ]) H$ w, @% f2 G1 M# A
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 p: Q2 i( s# A: T) u' Bset i5 J; H5 s& o! H2 p
( i + 1)

  @3 ]5 c. }: ?1 P3 D1 H9 o+ R' y]
  y; I; B' z- ^  @3 I" `let j 35 z+ |; o7 j  p  J6 w. e- m
let sum-money 0
1 I7 @0 y8 Q- N7 q% e% G2 Rwhile[j < [trade-record-one-len] of myself]
8 T$ |2 A* B4 e0 _2 \" k" M[7 H0 r" m2 q8 i
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)
! q6 u9 }6 M' k& p4 g. m; T: y& hset j( L# V( w; y- @2 B
( j + 1)
* r- h! c. e# t& C
]
  ]# s$ Z. b" g; s% i$ u! r1 Glet k 39 D' @6 e- P% X( z
let power 0
! |+ _; c3 l% G7 T; y/ clet local 09 X1 B; ~3 X9 }2 Y6 L2 x1 Y! \
while [k <[trade-record-one-len] of myself]: V: i' }( ^% K/ d
[4 f3 F$ M& v' X6 F; Q
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) ( b( w/ I' P- F  J7 V: t* _
set k (k + 1)
% }0 q" i' Y! a6 {) Z0 Z]
- l  \5 T* F% L* _set [local-reputation] of myself (local)6 p" Q+ k5 A" s
end" D+ y8 z% H. \/ N

0 ~, e+ q/ L6 m5 @. m1 w8 }  ?to update-neighbor-total$ k1 {- ~' Q. E: z- ^; O* H' H% h

! i) E- z5 S& H' oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. Q' S3 g/ m7 Z0 h5 Q8 K5 x2 ]- N! o

7 W0 M1 M' A5 \" k) |) f/ }1 y
8 {' v, w: U4 L+ q. R/ z( ~
end
/ U, f# C  o; C- S& a# V9 A9 i5 J" ^9 Q
to update-credibility-ijl
9 K$ p7 l( c& k6 R: m! C6 I, h9 [) B( Z7 E
;;
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。
% z6 R" M  ^+ e' Y2 J' [let l 0+ N+ _. L2 X% w; @. t) i9 [
while[ l < people ]
! H  O) A& F- P7 F' V* @;;
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
6 F# X0 m: B! j) q[
1 F( p9 q/ \+ N9 Z( xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer); ~; [* Y; f0 Q8 M
if (trade-record-one-j-l-len > 3)
3 n$ T7 w8 p" r( I3 G1 b: f, s[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
9 u! l+ `9 c7 w! w6 s/ zlet i 3, X9 b% U" u4 m( F) N' F  ~) f
let sum-time 0
8 ^4 q2 f4 ]* {9 m4 kwhile[i < trade-record-one-len]
! h; z' D& P4 ], e, S  w& i[. P1 c: @( O9 Y; O
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( r6 E6 ]1 t: u& z4 M7 w& k9 y/ V
set i: f# k5 Z5 d- x4 J
( i + 1)
6 W, i1 H* ^4 o- S; `% K
]8 R. g/ p, s& O! z' ]" I' s
let credibility-i-j-l 06 Z& L8 T. e; @: d7 p% N& H
;;i
评价(jjl的评价)
2 t+ v3 G' y7 xlet j 32 H: O8 z' z/ \" P" q
let k 4
- a& e, k0 F8 q$ K  u, V* n1 uwhile[j < trade-record-one-len]7 R' x7 M2 Q+ o) L. b2 `7 ]1 e2 G
[
; K* \+ n$ f7 z4 D1 _3 Fwhile [((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
& x( ?1 |. G# G9 Mset 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)9 S/ {& G2 k" e4 g. e
set j# m6 `$ h3 Y3 j5 J
( j + 1)

6 }  K$ v5 U& g! h9 [5 ]( g3 b]
$ f& K" m" w1 S$ jset [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 ))
  Z. t4 A$ {( u
) d& l$ G4 H0 ]+ p) {
! r5 H" v' o6 F4 D2 X) f$ E
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 c3 O1 P3 U. E+ i
;;
及时更新il的评价质量的评价
# S( }2 f' Y/ x- Nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& i# O3 C- J$ b. S" F0 V6 fset l (l + 1)* @7 s: O9 a. b
]
7 Q/ U: M' V! R( N8 n! F! Mend
( h& @5 f4 a' p( p( V
$ ?. J8 A" Y9 H  D8 A' `$ @: j* W" dto update-credibility-list8 j2 E* w. H3 h6 W$ b7 S
let i 09 ?( h' I* h0 W( X" ?5 {
while[i < people]
" H; P. s) f& Y[
% Z7 R/ Z8 \: b, Blet j 0- [, f. B1 j5 T" X) h* y
let note 06 _9 m# a( ]: }. u3 K
let k 0
' E" K9 q/ b; z6 g8 H# H;;
计作出过评价的邻居节点的数目, u# r, p  Z. Z2 m" h
while[j < people]* j9 J: a9 [5 s% m* G9 y/ B
[
% @3 P! `; W/ W9 O2 Rif (item j( [credibility] of turtle (i + 1)) != -1)- q8 I* _1 i+ k' n
;;
判断是否给本turtle的评价质量做出过评价的节点+ l; _- Y  d  D
[set note (note + item j ([credibility]of turtle (i + 1)))6 E8 I. }# q& \9 j
;;*(exp (-(people - 2)))/(people - 2))]

  T; q  P8 j- c! O8 lset k (k + 1)
+ X5 g0 [( @2 {2 i0 j: p; []: P5 \6 U) D0 `  O, _
set j (j + 1)8 r* Y1 r: O1 b: H8 D: a6 q- C
]0 k3 @0 v8 w9 U% s, z% {0 J/ _1 ~
set note (note *(exp (- (1 / k)))/ k)
1 V0 W6 T5 e' N+ dset credibility-list (replace-item i credibility-list note)+ Y9 T: A2 N0 o- P- F
set i (i + 1)" S# U% B5 A) Z2 \6 S5 Y- g+ j) [
]" ~, h4 F! A6 d5 Q& S
end2 H9 p" {" V0 r- K& G7 ?
3 e* s" A7 c2 K# D. a8 f
to update-global-reputation-list" W; X9 W  c' x& v
let j 0
. ]9 K7 D- a$ x4 J+ L# {, M% t( b5 qwhile[j < people]
' r- M5 F2 L0 e' T( Q6 T[' g7 ^% e( f* E& g. A; z' F
let new 0& q" a; b3 W2 W2 }# J7 F
;;
暂存新的一个全局声誉
7 \) b  t2 g2 {* O/ Y0 w' wlet i 0
, H9 M# Q& c; N& J( H- c+ qlet sum-money 04 ?3 O! C- k7 I6 }8 E2 Q+ x
let credibility-money 02 p; Z7 C4 m6 T; i! ^0 D2 T' q, Z
while [i < people]/ |3 y4 T+ [( V! D4 Y
[
9 Q1 ~) b* U4 }# Y* L9 v  Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))7 N# I# x* O; m0 ]9 p
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ O0 {, D! _( f# F1 tset i (i + 1)
' w) c; P5 K* S; Z8 y4 K5 L]% y) f! w0 P$ l
let k 0) C8 r) J8 Q/ |! T8 Q! H
let new1 08 v$ l. ]7 N% g; M: u4 l
while [k < people]
+ }6 d$ p1 a( D  Z! z6 g* `) Z[
+ F3 v3 q' O6 E/ g+ eset 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)
4 B; O' P6 E* ]' V' c) x5 Vset k (k + 1)
' `+ @  I7 O; C]( J7 X, i) ~) K, x' s( i4 c
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 L5 n, W1 D6 Y2 d- j2 Uset global-reputation-list (replace-item j global-reputation-list new)
4 l2 @" u- I0 r  ^8 c* C' g' aset j (j + 1)! M. B8 ]0 Y. r1 @
]
# A9 d/ a( k7 m: C0 \3 Q$ jend
* v  B9 T; \  T" x2 H4 n4 ]& C7 {  m2 ^3 K

$ X2 e; l6 M6 s
5 h( K) u0 F/ ~6 h# F1 Vto get-color
0 e$ e. Z  x& M! h3 h' E$ F. ?5 O* V6 B; {& N% B6 B; E
set color blue
) e6 _) M; q* W; w7 v
end  U0 {4 D1 N0 u- R, O$ e8 X" h

( V. k7 Y" v& l6 Kto poll-class9 l% H: U2 Q$ O3 P
end
3 ?) s6 D5 }+ Q/ a! o
/ _& i3 h. G# W: B5 ato setup-plot1
3 s3 p1 [- H; s$ F/ x3 ]6 q/ P7 L+ x$ a$ Q) y" o
set-current-plot "Trends-of-Local-reputation"

2 i( v6 |) q/ f0 g+ N! m( W# i; V- U/ A4 N5 x1 \
set-plot-x-range 0 xmax

4 a9 f, X3 t  Q& x4 |5 b+ g: M. `3 D4 q2 v
set-plot-y-range 0.0 ymax

) X$ l$ O9 H! o! Nend
* z7 K9 y; C' o$ J3 a" L$ ~$ ^$ S
' Q& N0 u) ^; ?- @8 F7 Fto setup-plot2
  E6 W0 [4 G/ G! Q& w
  L9 W$ }( E6 _3 s! J; a# jset-current-plot "Trends-of-global-reputation"

' R+ ^/ R: `) h3 t4 x6 y6 H5 l& Z7 k2 R" }* J) W+ _/ K) a1 [
set-plot-x-range 0 xmax
* L: j8 o; W8 x1 G/ K. F

* T( b9 ~4 N! _) Q% @set-plot-y-range 0.0 ymax
/ X2 m8 F0 C/ T/ D3 \, I
end
7 u- N, I8 [$ s+ r) U$ }9 t: m2 m* w5 P- O3 @- x
to setup-plot3* T7 ?# K+ f3 S8 O$ q: c- j
+ O& ~% _1 T' M1 `) ]* E
set-current-plot "Trends-of-credibility"

* T. D* R" \0 C+ D, v0 O
" V' ^8 ^) q( r# E) R6 T2 @set-plot-x-range 0 xmax
, X( n; {1 m- Q* @5 g2 E
: f/ W4 G. Y' b+ [
set-plot-y-range 0.0 ymax

  Z2 W0 Y8 G5 s" o6 v2 F) Lend
+ ^9 |9 w/ k* q$ t0 a* ?
7 G/ B5 a+ T) [) ]3 I5 |1 I) ?: ato do-plots2 M; b& `0 X/ `7 j
set-current-plot "Trends-of-Local-reputation"" D" s6 P* u7 z' i+ i/ r7 v
set-current-plot-pen "Honest service"5 Y/ S* p1 G: e0 U, C
end) X3 P1 D) }+ I: l1 N! \3 ]% S

" `, V2 o3 a) k  m[ 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.
' U" |" f3 v$ }2 J) B( b1 D+ x% j+ A6 x% l* ~  U
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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