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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:
' i' h) Z  ?0 k% y! dto do-business & w" \# R) g4 x% _9 X
rt random 360+ Z8 ^. A3 }6 z* ]6 {0 s
fd 17 d+ U8 A0 {1 j; b& J& k1 K
ifelse(other turtles-here != nobody)[
  P7 m$ l. A7 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.
% i  w5 j0 _! \5 e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 Z: v, e8 \5 }- J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! q) i& ~3 O# a0 {
   set [trade-record-one-len] of self length [trade-record-one] of self# p& ~. L: C0 j" m
   set trade-record-current( list (timer) (random money-upper-limit))$ S* O& X2 p2 R1 q2 b! P7 k* t
$ N, P8 ~- m7 W& w4 ]: m, f* a
问题的提示如下:
2 I" w6 d2 y: W; e: Y0 N% f4 t- Z  p8 |: G
error while turtle 50 running OF in procedure DO-BUSINESS
1 ~( |% O2 W- A1 i3 F  called by procedure GO
/ T+ D; _4 x) `# YOF expected input to be a turtle agentset or turtle but got NOBODY instead.1 Q% a% m+ L# p) g4 J8 w
(halted running of go), N  {7 d- M; A! ?1 u
2 J6 k/ j) X( w# G
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~~/ F5 i0 }& h( t  K( D$ o
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% Q: M) [4 k1 X
globals[
+ y7 C/ n! S! p0 a. uxmax  G: ]/ I- V5 O" T7 T
ymax/ ?, t: E- l% E; S/ j1 U
global-reputation-list  Y9 A, q) W; B. v9 l( `
& x/ c7 P1 Z, T
;;
每一个turtle的全局声誉都存在此LIST
8 }% }0 C3 r5 Kcredibility-list, T8 K& t" [- J0 o
;;
每一个turtle的评价可信度
) J9 c+ T$ t/ P7 P( w% vhonest-service
, R6 ^  P" m6 J: ~7 \unhonest-service* n  V  u3 e$ H% g- z* S
oscillation1 Z+ Y8 q  h6 w
rand-dynamic
0 H$ s  I* u$ @$ W]/ Q% M" A: ~5 R/ |

0 R! X$ b% x5 y: ~3 z3 Eturtles-own[
0 T3 c! n3 F/ k: M$ l7 Strade-record-all8 t/ `5 _" c3 x; T
;;a list of lists,
trade-record-one组成
* P) k  _( Q. ?2 Z2 A) M9 s; ?trade-record-one
; j% n( J' `" o' Y7 _;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 l$ L* y. f7 O& f
: r2 F% V8 o8 f6 ^
;;[
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 O# e! G  G: m; Y/ ]: Ttrade-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]
8 h7 w4 n/ d# W3 Y& kcredibility-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
! H3 Y! Q* g4 Z7 L. I9 yneighbor-total3 T+ v% I- ^6 V) H" O
;;
记录该turtle的邻居节点的数目7 j5 H9 m5 p* r: ^
trade-time
' i: J# g: ]& i0 m- s: M! W;;
当前发生交易的turtle的交易时间
- {5 Z+ W" T0 P- m& R4 dappraise-give* S9 H' {- `& p# f! d
;;
当前发生交易时给出的评价( s7 ?: y. T$ U! _. u
appraise-receive' p( \4 V! Y+ q9 l; L7 U
;;
当前发生交易时收到的评价  s; E, s# O1 D; N0 D$ l9 W5 Q
appraise-time
: d8 `, x& `! ^/ d( J;;
当前发生交易时的评价时间3 i$ L8 }0 q. \, b
local-reputation-now;;此次交易后相对于对方turtle的局部声誉8 B/ F, q) E9 D3 |7 r! @5 J$ h
trade-times-total0 P; X. c3 r( [3 Q* [0 i, {- n
;;
与当前turtle的交易总次数
; d0 @0 N& f1 Q, e  Z, V& @trade-money-total/ W6 S# i+ F1 H- @
;;
与当前turtle的交易总金额
. O% g# O& H% b, S; ylocal-reputation
* ]: v# k) [% T- r; X1 `% ]6 Aglobal-reputation  \3 P' Y/ z8 ^
credibility
$ `0 n- R" _$ I( O, L9 K;;
评价可信度,每次交易后都需要更新* m/ F4 o5 v9 G# I* z
credibility-all2 w" Z; Y/ w& R8 x
;;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) l( I7 D. ?3 \# B7 A* E0 G

6 L" P3 h+ |4 ]# N7 p9 u;;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% E' r( ^# {8 }* y1 e. S
credibility-one8 o$ Q" t) G* ]7 I, [$ w
;;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
  e, p/ K% g+ a0 rglobal-proportion3 a' @3 |# W5 }% n, p
customer
+ N+ E; w/ n( }% L; Fcustomer-no
. D! N5 W$ a0 f5 ?trust-ok
% Q2 G, {. ?/ M, r1 x# ltrade-record-one-len;;trade-record-one的长度
6 ?3 j* L  B+ |3 c]2 e7 {: q& F! [2 C% E

! s# ~6 W8 a! i4 `* p# X, w;;setup procedure
) q( C6 d4 V3 n4 i3 g, f; U3 d; u2 K* i, N# o, c5 D! o( L
to setup
/ v, I, M# D( t6 [* A3 b
! f3 N) \; d) s  o4 Q2 g5 A, Kca
" B  D0 Q9 i' w6 g; s
7 |: H" T& u  i$ z1 ~
initialize-settings

# O$ \6 k3 ^& ?+ @
' O' Y$ P+ y  {- b' R; r) E' m. C3 Hcrt people [setup-turtles]
! W# e9 `8 E2 l: o1 N" w

6 V, V1 ~4 ~# D8 g; m# Yreset-timer
. b* {/ i% Y; ^: v

; d7 e. A. K. _6 N0 D  z8 J( vpoll-class
) ~- d$ u7 v) X; d* @$ ~" M6 Y

6 u2 E( ?# w& p! V7 t: @setup-plots
& W; E0 X/ ]0 e5 h3 @* I
) v& w/ O" Y1 p2 b8 W' ]/ m
do-plots
) n- e  N0 k0 X3 R" G. k& d
end( R" t) L, y9 Z8 F8 V

5 K) {" Q' }2 o/ R  u. T* N- A" E7 [to initialize-settings! r" s) e' _5 Q  H4 d: C' v. R# z

7 D9 O" m. R+ l: c& Kset global-reputation-list []
1 U: W; a/ p& s4 p

) ?- ]" T9 i: Hset credibility-list n-values people [0.5]

0 a( a' W) P  `- X. D( |. f# h# C* ?: o$ @" A2 w
set honest-service 0
: q- D0 |' S+ [+ B4 H
9 k1 t4 t& Y: E8 z
set unhonest-service 0

" {  h$ n; W) r/ Z" g$ c: {/ K# H, |
- j, l7 v- \2 b7 R) R0 g! c; Hset oscillation 0

6 N2 L! d$ o' s* ^6 e8 x; A& x+ \% K3 K& `7 F2 f  T. t( @3 r  P
set rand-dynamic 0
2 G7 \+ W- s" g+ i
end
4 a. F3 s0 c7 b# e# E( X0 f! f2 H
- M, k9 E: V, ~6 ]7 F; Kto setup-turtles
- h8 Y# _5 B# I1 L' R: C2 Zset shape "person", r1 A! s. _$ s' X/ a5 h2 R# j/ v5 ^$ _
setxy random-xcor random-ycor7 O2 @% }5 G0 ]- J" |- H. [
set trade-record-one []
: `, I' L) K; {( n
" j0 I/ |7 i, p+ }; C# U) A. d2 X( Y9 b
set trade-record-all n-values people [(list (? + 1) 0 0)] & c% T  D: W# V5 O6 r: M
4 c$ I9 m$ K0 ]1 R: Z; F
set trade-record-current []; g2 @  A, W8 s3 V" p
set credibility-receive []2 X, A% K9 E7 ?5 ]
set local-reputation 0.5
( g8 N; k6 U. `$ Wset neighbor-total 0
; n7 Q% ?- c+ c$ O' tset trade-times-total 0- S2 A; R# ^0 K' i! R( |
set trade-money-total 0" q6 ~* g2 K3 l; d: y  m
set customer nobody* n7 Y! m8 g& R4 T$ V9 Q! z  W
set credibility-all n-values people [creat-credibility]/ B8 S5 I. @7 c/ K& K
set credibility n-values people [-1]
; m$ D& |( S) m6 Z$ b5 Uget-color; C  R' ^- `6 A0 a2 r2 x! ^! k+ P

; d+ A, _+ h; U; ^; }8 {/ ~! x7 u4 v3 Rend$ [4 @6 G+ H4 p
$ k3 K1 ^! `/ K# z# b2 h
to-report creat-credibility
, w$ _5 o5 x0 U% f. \( {! B1 x1 Greport n-values people [0.5]
" u9 @$ O0 ?4 ?; z  wend5 x. _( P/ G# ]5 k/ n' U  p
6 j  E# \% U. R: g
to setup-plots% y% g5 z0 e: D0 g+ ]* M4 t

; V9 P3 V0 N5 F7 M9 nset xmax 30

- [- J5 i) m) A; d" B) f
( e" x1 {. W) rset ymax 1.0

  m" b- ?9 M, a: i0 I) _" c/ P
8 q+ B! w% V. a' nclear-all-plots
: B$ ~2 Q, M5 C5 k+ ]1 _3 ^% }
% ]0 |$ y" u( G8 R; d, D' ^- b
setup-plot1
6 d$ E2 R4 B: t! _5 Y, G6 f" n/ m

/ D1 a; g+ z: S4 Osetup-plot2
" L' J& `/ q& w# p: P  K
7 P4 c' e" l  l7 m# x
setup-plot3

, Y6 N* G( G2 o$ O3 m0 L8 Q( hend
: U  J4 q, }# A
: a* J% G3 M. [( G! _/ \# Y;;run time procedures
% Z' O) E' S- g& }8 T" l
$ n; Q3 Q. `- W) M& fto go" l: V; J  C3 p# D
, p0 D; @3 A  V# h4 L* J
ask turtles [do-business]
4 X) F* b; \! Y/ V6 f& X
end3 V. X4 I2 O, f# q  m1 h

0 f5 d  r6 X& ito do-business 1 Z2 N+ k, F. \/ H

1 d8 w" R- U7 ~$ O! V3 h9 e- m! r# D* ]& B9 v  z  v( b2 c
rt random 360

9 I1 p  j4 {8 n) T- u) j. q0 ^2 D$ s% f* i& @+ y1 {$ Z
fd 1
# Q( g3 Z( N6 [0 P0 [, M$ p5 O

8 s& a/ F4 e! X* cifelse(other turtles-here != nobody)[
8 H% p4 ~- Y5 g9 R7 f! M
9 a1 J7 |/ [0 ~0 J- I+ K# E+ l$ z6 m
set customer one-of other turtles-here

6 R2 l8 L6 b6 V0 p
7 Z2 w0 j0 d( _# x; h;; set [customer] of customer myself
4 S- C7 b) O+ l/ b% a* Z
( q: Y( h9 u- `( G, w3 o# t
set [trade-record-one] of self item (([who] of customer) - 1)( J0 @0 J% ~4 S! }
[trade-record-all]of self+ q4 s4 [/ X( ]7 o. z( f
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

9 _: L' M: v: Y# U( C+ m) F$ D/ P: {( n5 x9 E  i2 P' V- z
set [trade-record-one] of customer item (([who] of self) - 1)
1 i' W8 ~" ]' h2 W  O[trade-record-all]of customer
/ x5 k9 P8 A3 e; F) Q- Y- M: ], s

/ F# V! V7 ]9 `! D) Cset [trade-record-one-len] of self length [trade-record-one] of self
/ I/ k: g' g9 z  q7 B
% r8 w2 d( M$ F8 G
set trade-record-current( list (timer) (random money-upper-limit))

1 J. h/ X# l7 t  k0 [
* m. G' c! O( Cask self [do-trust]0 o: ~/ C4 S- A2 H1 ]1 X& ?/ `$ Z& |
;;
先求ij的信任度) A$ y: e$ W" p2 Z: X

% _* t$ L# `3 z$ m* @if ([trust-ok] of self)- o6 I8 l8 U. c( A: o1 a6 y* y
;;
根据ij的信任度来决定是否与j进行交易[  b& t, I) I) n2 j& r- ~6 j6 N
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; I# v5 O1 l; Q1 C

* G9 D8 t& V2 O  Y  Z; O3 S[
# G: n" g; o; }1 B6 |
2 D2 i0 m: g' E
do-trade
" {4 V; E2 o% ]* C
+ g0 ^+ F' K* k
update-credibility-ijl

5 L; ]' v7 r' \7 U
  C3 n4 d0 y) U# q' q& k6 gupdate-credibility-list
# t+ H/ [' Z2 E# }1 z8 X* m3 z

& t6 o- W! C1 |; M  ^4 N& J/ R2 A
) W) v; s9 z, U4 F0 \3 Zupdate-global-reputation-list

4 w  r' J3 D2 W! S4 a" _
8 V* B2 I: u) B$ gpoll-class

8 x/ D7 f2 h5 k/ ~8 Z0 F! W
) B1 V: _4 D9 `8 J( j- Z5 Jget-color
5 ~( d" O! U0 i( B1 B* K

! ~' I/ l7 y: j7 h5 G# g]]
7 F( t& s$ t& r5 l7 l' S% ?& T/ ^; S5 j9 k- n7 h8 k1 H# ]
;;
如果所得的信任度满足条件,则进行交易
  @: q7 b) N0 T# W0 i2 Z9 X$ }# t1 I) o. b
[

. K9 r! m1 g# ?( B6 _  F
% q. k1 ]* O" {! Srt random 360
( W4 c9 g& B- m* G. L3 ]+ ^4 z
7 z9 V+ _$ r! x4 q; R/ h1 Z# b
fd 1
$ F) V# d/ ?6 d( A) h0 @# C

* ?# a6 g5 g4 P6 r7 ^]
0 m, d9 T* _/ U2 j6 {
2 M# u# G" p7 M; E* i: p
end
! h( ?+ x7 R3 s1 d# l

& Q( D2 f, w$ {$ D% [to do-trust 4 s, R9 d3 t9 |) K: G/ v* a
set trust-ok False
$ z+ Y* B0 D! r9 {9 J. T& x
# H7 C: B( Y4 r  O0 ]4 P, K( y

0 |6 ~+ Z- @: vlet max-trade-times 01 C2 I( M/ A) @9 P- P
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 n0 y# B6 ?# h! h0 c2 k! N
let max-trade-money 0, y# f& l, n& q& ^* v8 k
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. K: U, x' E2 w5 F+ `, m7 V  i4 F
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" {+ c( E1 y9 Z9 W

/ u: x7 u9 O& ~, Q( D; c; e
4 i$ E& z$ V5 X5 m9 F  H8 b3 z
get-global-proportion/ i; L$ f  ?: F2 [$ h
let trust-value/ z$ P7 x+ u+ }, {- P; }. T1 L
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 S  a( p* G+ d: W! U. f( p# W
if(trust-value > trade-trust-value)
# b, x. M7 [/ q, ^% z% ^+ K% M' |; o" C[set trust-ok true]4 `, c5 h* S3 V3 T
end, Y8 F0 e+ i$ l8 a  [

; ]+ O! }3 V5 ~/ Hto get-global-proportion
' L5 w. ?8 h+ _0 a/ a& B3 Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 q0 ?% Z$ ~- D1 _
[set global-proportion 0]
  G+ A) \: I  m* ?* f[let i 0
& C' v6 }: R1 O) m8 N  E! {; D/ T, l! Nlet sum-money 0
9 j3 l! t2 q0 u3 d5 s) jwhile[ i < people]
2 P8 ^" {/ d* J8 v$ q$ T8 D[& p* b3 ]+ \0 W3 b1 L+ S1 D
if( length (item i
" T' P8 B% b" Z( @: k1 R, t+ k' K. ][trade-record-all] of customer) > 3 )
* h7 h4 h% l7 u9 g" \2 |* f; D* U) n
[9 I: b  l  C. r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ u' x. [0 ?7 p( c
]# `8 B# o2 l8 z4 P6 A  B
]( T/ n  X' N3 R6 d8 E
let j 0
7 }& @) ^  ?, C( `# Q  ?let note 0
2 d3 ?& Q% r  b# o" z- q* I) {9 wwhile[ j < people]* q% y! _2 J2 l! N2 x
[
2 g9 n8 f$ P" h, C1 ?8 B% J1 Qif( length (item i
9 _7 L7 |. T; f( w3 Q) y[trade-record-all] of customer) > 3 )
6 [( p% V- s) ?+ r
[
0 r: I& m( m: N! M6 f! \8 M. yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 N1 M" T7 M0 h2 x
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ {9 T* u' s  x$ p% k
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& b% K! I' ~) y0 k% n]
5 @3 J& o& o( M9 w9 q7 o. l& O]7 i  h  l& X' A+ u9 e' V& H: T# W% F
set global-proportion note7 F6 j# F/ ]! h& z
]
- B- i8 W+ H% E5 c- |0 M% |3 `1 Send
$ L) j9 }1 ?& U. b, F6 {! D8 v* @  t
( j) o" G: k# [- Gto do-trade: N& L' [/ P( |  G% x& e7 Y
;;
这个过程实际上是给双方作出评价的过程: Y3 z) L* j: {* ?8 l/ i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& j! k5 f* p: H2 _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, f6 U, o( x" _5 n8 r5 p
set trade-record-current lput(timer) trade-record-current
% u( a  K$ c& V& |" H8 O% P% u;;
评价时间
* K8 [% f! K, m; ]ask myself [: j' J5 N3 o# W
update-local-reputation5 j# M5 c4 ~5 d* P# p% W
set trade-record-current lput([local-reputation] of myself) trade-record-current
! v4 I( J3 |( m$ P]0 \4 o+ {1 u5 V) W) K: v) z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ M, w$ ^5 Y, k, B
;;
将此次交易的记录加入到trade-record-one
) _' i' C1 [+ N% n, O" \$ q9 Q8 p5 ]set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' g% r) G7 o; `( O( i
let note (item 2 trade-record-current )
' E% w4 W; F* m/ D. s# r( u4 j- z: Oset trade-record-current# ~; Y* x6 x) e9 [8 |1 `" ^! {7 V% K
(replace-item 2 trade-record-current (item 3 trade-record-current))
% N  A2 ?# L! |+ `6 m  @8 D
set trade-record-current
% n' i. X( ?: O(replace-item 3 trade-record-current note)3 m0 `- t7 f* ^. D6 Q& |* P" f# e8 I

0 U. M6 _2 U9 ~7 _8 B
! Z. f% T5 t% f- Y
ask customer [
" P- t6 X2 P9 d6 a. Uupdate-local-reputation
- ?+ }# I  q: ?9 C2 `8 p: ^set trade-record-current
6 i0 }5 U9 {( l/ i" D1 D3 L! e: r(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- Y. l3 n0 y3 K: b4 X! K]
% L$ ^- `) I( p# c
3 l/ J) L8 g2 i$ D1 ~2 r" F- Q* u) L

) u( Y% ~6 b9 H4 H- S4 `set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 M6 T5 I6 ~0 }8 ~" @
  f0 C2 _" t" k; B8 Z. a- d8 }7 I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; ?0 {, C% Z# ~" B;;
将此次交易的记录加入到customertrade-record-all1 |, u$ {2 g* x: t9 ]
end, X4 v+ i1 R' z8 n
$ C# a$ q2 K2 X( M. E7 m
to update-local-reputation
& C/ i: T+ h) m+ {set [trade-record-one-len] of myself length [trade-record-one] of myself
; |! B9 I' c- t; Y! Z* Z5 j7 a) j2 ^3 E7 C
, y. H# N9 `" T3 _3 c5 B
;;if [trade-record-one-len] of myself > 3

- i6 ~$ _) n% Q* g) Hupdate-neighbor-total
: L& A4 ?/ `' q* ?' p& e;;
更新邻居节点的数目,在此进行
) ?0 s) c' e& @let i 3" }' X/ q* ?1 W; w0 K: ~% n: v- l) Y
let sum-time 0: r, x& R7 y" h7 V1 U+ |) S5 K
while[i < [trade-record-one-len] of myself]
( r9 r$ o; Y; f: A1 N; t0 T[
" R% p9 v6 i! P: {7 }# uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' t1 r6 ^6 |' c8 h" f" a: ]
set i2 p9 Z* w: X6 b7 y9 j8 L
( i + 1)

# }- i- a: `) |6 g]
' ]& N0 w3 P# C( Ilet j 39 b! k: z6 f; ^; M# V
let sum-money 04 s/ a5 r) N& `7 Y7 U1 V% |
while[j < [trade-record-one-len] of myself]
" k5 I2 B% W  O[
5 `' J1 i" k7 I: r4 sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)" A6 L+ q- E% U) z( y
set j# i! O6 M9 G# n4 }
( j + 1)
7 R- K7 C) Y% ?& h
]: H4 ?" ]( H& G( {$ C
let k 3$ o8 J7 o/ d; V% b0 G
let power 0
) ?0 B/ b# P3 R- c  U8 U; V# dlet local 09 |2 P3 c) V( s; W, ?$ z, M+ a
while [k <[trade-record-one-len] of myself]0 N; K+ x" s% y) n
[
) Y: @7 I$ r0 F/ P6 _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) 5 C# g- [7 q' M5 `+ j+ f; V
set k (k + 1)
9 j5 t+ e+ {! @6 c. S+ o& P! H2 j]( U% I/ `0 i8 |' ~* z  e5 d) v- `
set [local-reputation] of myself (local)
0 D6 |" \2 ~. o: O6 _' oend
1 l4 m0 m3 a5 h0 ?% K' E6 b/ s1 V; l% H0 X" \
to update-neighbor-total
( D% C$ q" ?6 i6 }3 C) n1 ]% _  H! C) L( r5 K7 J! L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& A8 s6 ^  Q/ S( {+ L' e( ^( h9 F
& u7 V/ ?2 }  Z- h4 H
  W6 u" h1 e& ?  [4 y+ w# `
end0 o! D! D" x$ j# c9 U. Q
9 L% \5 I+ `" E! ^& r
to update-credibility-ijl
6 I" c( O! d4 _% p
  T$ m" N* x$ W;;
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。
6 U  n) Y: G' J2 k2 Rlet l 0
: H3 f+ q# G! k& I/ R% rwhile[ l < people ]
* W9 _. C) @8 M: 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
( L9 F2 E7 q! j2 L' \: r5 R' Z5 x[
, t: m2 H% M6 T' v7 U3 }6 jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! q- g7 ]5 X( C* p/ ]# t8 Q7 }if (trade-record-one-j-l-len > 3)* s# f$ e/ j# N
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
( {% _2 D' s/ I# n8 H) flet i 3
9 ^0 ~% F1 L' U# v8 q. r  i7 y& Glet sum-time 0
3 [4 X3 f/ I# H- J$ N& Hwhile[i < trade-record-one-len]
. z7 B( w! y" `) _0 K9 B3 L3 i9 j[9 e' a: C0 ~. T1 Z" T$ t
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 R2 W$ t+ [( f: a
set i
* N. e, T6 O9 p8 [7 r; Q( i + 1)
2 j3 ~4 K" `( K+ s6 O$ H  \
]4 d; H7 Y1 O6 k+ u5 n2 a  ?
let credibility-i-j-l 0
" y8 v  u/ G& |;;i
评价(jjl的评价)8 i- F4 @  u  [% A6 t  e  f( D& W9 U5 A) P
let j 3
! h2 k7 F* D7 \let k 43 j/ y& o1 A' I
while[j < trade-record-one-len]
6 ]. J6 H# |# ^4 W, [[+ v3 \) c2 }+ F" b% L2 }
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% T% x0 T* i  G
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)( \0 z4 D% c/ g
set j
" ~! p9 _( u# o1 [* G( j + 1)

$ d2 x# K+ u* C! F]
* o4 ]- ]* M7 V. c+ i& Sset [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 ))0 Y7 |+ ~+ T$ d5 R* C7 l# h

. d) ?  A+ A8 P7 M* |  g, d

4 S' b2 `' d. J! l8 k4 {: ]let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 J4 Z0 B" ~/ p8 t( ?3 H;;
及时更新il的评价质量的评价
$ Y$ G+ x' O: |/ Hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- E/ D, v% z! r, F* b: a/ H+ |
set l (l + 1)
' c* _4 ~0 |2 [: U9 v]6 u- s& W+ {0 |) t; \  `
end" g9 S0 s' _% |+ K" k) a# \! C
: O, o5 P4 x( m8 _/ @$ A
to update-credibility-list
' ?! o, E$ J) a" }9 a/ _let i 0
# k" G2 \- S# ^" _" ^2 A: t$ E9 Wwhile[i < people]
$ n5 C1 h: Z( i( z6 v4 ?: d) U[+ |2 {' I2 t: C. ~
let j 0
" D( k/ h9 H0 p: Wlet note 0: X% v! y$ Z6 Q. t* b
let k 06 C* Y5 J1 E8 z: _
;;
计作出过评价的邻居节点的数目# J' j) D2 r1 M, o- w
while[j < people]2 b2 n: t/ g5 D0 }1 w/ X( P; A
[
, v7 b7 b9 b# _6 @% K( E8 X5 P1 M: hif (item j( [credibility] of turtle (i + 1)) != -1)4 j, ^. D' h! U$ b2 q
;;
判断是否给本turtle的评价质量做出过评价的节点' c$ d) C; z) D  s) e2 N" R
[set note (note + item j ([credibility]of turtle (i + 1)))
' }( S0 C" {. w0 T;;*(exp (-(people - 2)))/(people - 2))]

1 p  p( h1 b* P* [# |3 iset k (k + 1)# L( n2 `2 D- A; w
]
  L2 Z6 Y' S& q% {set j (j + 1)
" s& M3 ^8 B/ Z8 M0 G4 n]0 T9 L& }: A2 M' d8 X& m# z
set note (note *(exp (- (1 / k)))/ k)
/ Y/ m2 R- N2 n) U) C0 p$ b8 U! bset credibility-list (replace-item i credibility-list note)% X8 i( @7 e. P( I" L
set i (i + 1)
* H2 H; [& q4 k$ g  I! L]
  D/ S' u" Z! P0 C" wend4 `: s9 _. b) k- R* o* W5 R3 ^4 T* t
3 \+ F6 v+ R- I1 \4 \
to update-global-reputation-list4 d  N: U0 \0 [. l2 e0 I
let j 05 a" Q/ N, b& i" U
while[j < people]  }2 ~1 D  C6 B* x
[
7 e. b2 c9 z- H; c+ R$ Clet new 0
( L# s- M( @" _;;
暂存新的一个全局声誉
: f2 \! C* u& W0 m6 Ylet i 0. ]+ e8 E1 Z( h: f! X0 g% m
let sum-money 0% P( y4 e! n9 ]! n5 U: D: a
let credibility-money 05 u' `8 s4 V+ @. C. z
while [i < people]
* ]/ C0 R+ ^! G- [[
5 Y+ t& B& W( |9 l0 V  c0 Xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. h3 P1 l; `' p' Lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ L' }0 H9 S2 G& `; rset i (i + 1)/ k' x  }4 r! X  {  `6 r' Y
]
) L3 ^: F& M( hlet k 0/ C* w0 Q  I3 R2 H3 P- E- d
let new1 0
9 F9 D2 m0 I! k3 J4 m- Dwhile [k < people]
* w$ j! G# j0 e% e[- W2 j  q. `( ^
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)
) I7 t5 F' e& e) q3 xset k (k + 1)" A4 j* w1 e1 A( X" |5 @5 v
]
  A  T. w! n0 g. r0 z& e8 w& e: Oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + L$ u3 ~  i8 Z$ a2 X& U. p2 l
set global-reputation-list (replace-item j global-reputation-list new); ]) U: i5 @# c# _: s- m! h
set j (j + 1)
1 Y4 X- u5 P" I% ~5 |. [1 T]
  J  k/ \. w/ J# ~! d, O- Gend9 U, g2 p9 v" n, Z2 ]4 E  `
; I4 i2 r" I" K* X; h( `  H' w/ T- ~
) J4 k) R9 s" o+ `' v/ s
- `# V* @3 ?; b7 X6 S
to get-color
. m! s8 c4 ]% p8 L
3 P1 Z1 I& {* lset color blue
. B9 B1 a3 s; U) b9 L
end
9 o3 B& N3 R' Q0 Q' d
) ]! ]8 I# ?! a' p6 j$ pto poll-class5 [, _) d( C2 h& c8 l, c
end2 t5 F/ e9 \% i( t

  q+ l1 j! v2 V2 D* l; _$ h: Wto setup-plot1) i, S0 y7 D7 G
( y! _8 J+ i& N  J
set-current-plot "Trends-of-Local-reputation"
! S. C7 U' [; C% T5 D& o# t. G, Z
! d: `' w# P" F& y" d' I) B  e1 s
set-plot-x-range 0 xmax

& _4 A' s0 K, `  ~
3 a+ d( X1 V/ A: X5 j* j. jset-plot-y-range 0.0 ymax
; K$ c; R4 \) Q4 A, K: w4 T
end0 `( t' l' v0 U% j% @2 d( X, w

! V: S) a  @4 W* m" T, `to setup-plot2+ f5 v. f2 w2 [( B: G) }' c' ~# O
6 y. z6 A( G# w! t! b  @
set-current-plot "Trends-of-global-reputation"

3 X  ^8 {7 A- {- E; O9 V# Z9 }3 F7 E; b9 ^
. r2 q+ l0 a( _# c' X/ L' f6 Uset-plot-x-range 0 xmax
6 K/ a& o( {5 J( E, R# W# |

3 Z  R3 [. ^1 M' q; r$ hset-plot-y-range 0.0 ymax
0 m5 J, f* G8 D6 Y. }0 e
end6 O" M- D) q  O% f: {# Q1 p* O3 _

; N# W4 N3 G% o% ~$ \0 gto setup-plot3+ F7 v: c8 I8 I8 Q8 Z7 I2 j) _
, Y2 r( n/ }2 Z' O" @- {0 L
set-current-plot "Trends-of-credibility"
" F8 Y* @' x- Z  n5 f- ~: p! V
4 s9 \3 p% q# o' d$ L4 J: a
set-plot-x-range 0 xmax

4 f% T) m; E9 [" o1 m0 c2 x! p/ l
+ _$ B" \% x5 z( _: p& ?2 pset-plot-y-range 0.0 ymax
" X9 x( d& ~* R) b" K! U& _4 _
end
0 }. Z6 r+ p6 y* Q+ U/ U1 H2 x6 d
! b4 v1 b7 D" k. s# Uto do-plots
* w( r4 F6 y# ]% Jset-current-plot "Trends-of-Local-reputation"
% {6 d3 k; q; E3 ^5 p  M/ M8 ?( Y0 vset-current-plot-pen "Honest service"
  c, u9 C! M8 q2 A, T  y; D) Kend
' ]. c: Z# N; d+ h8 x  F3 h; w3 F$ l! K0 Z$ J2 Z* I
[ 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.
+ x6 z$ G* u( d9 R. O# y
" {" F/ G- i, S  ?% l7 N6 ?- E  J5 ^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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