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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:: ~6 T: a' N& N
to do-business 0 D# M4 c' [$ S* @: G) }
rt random 360; `' P+ A4 X" r( {/ I
fd 18 Q1 N! \9 c  [# ~
ifelse(other turtles-here != nobody)[
3 e9 [) H; ]. Q; a9 x   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.
+ {( s8 |' E9 x# v, c   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 d2 M9 s9 c/ C+ y5 X2 Q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! A3 H0 b" ^& ~; g# S& K# w
   set [trade-record-one-len] of self length [trade-record-one] of self
6 V8 t8 m( S4 W% L3 ^0 P   set trade-record-current( list (timer) (random money-upper-limit))
+ C5 j2 x3 k4 f( ]5 R3 U1 p  q6 A$ B) P8 x/ Y9 `7 X9 N
问题的提示如下:8 m6 y! r  e3 r+ r7 _

& j; e& R) A8 _+ D0 Oerror while turtle 50 running OF in procedure DO-BUSINESS
, b; Y5 t& O8 B# U: }  called by procedure GO
0 _& ~3 X' D8 e. l' gOF expected input to be a turtle agentset or turtle but got NOBODY instead.9 h8 K  g7 ?, [# [3 m
(halted running of go), o7 t9 A2 Z1 x" S

: d: s; X# _( 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~~" x6 |* [6 F1 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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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7 i, b2 H  U  {+ i4 H
globals[1 k+ T+ `, }# H9 ^0 v2 D! A, i
xmax8 D; ^( r" t3 z3 a- H- p
ymax
: n2 x4 F  d/ aglobal-reputation-list% o0 w+ F4 b9 p

4 I4 B+ b0 b6 @5 G9 u* ^* @9 T;;
每一个turtle的全局声誉都存在此LIST3 F* {! W; I2 a& d; V( a
credibility-list
' ^5 Y+ ?1 y: g; V1 U' z& A# f7 @;;
每一个turtle的评价可信度
9 w0 ?- X% h5 \+ [- h5 B. Bhonest-service9 ]/ L* c& Y# k0 w7 S
unhonest-service
  O7 L# E' b3 F8 {oscillation
- A7 ?5 T- Y3 h6 lrand-dynamic
  v( _2 {' s& i( a2 o]
/ i% j& N  R4 [5 e  O) L7 O6 r# v
; v* ^5 V7 E; [# U9 Rturtles-own[
6 z; b* }9 R# `, D7 _! Utrade-record-all$ E6 g# S% |+ O. X& ]
;;a list of lists,
trade-record-one组成
' H$ D3 K' O2 Ytrade-record-one' p- ^) O2 K9 _6 I) W
;;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& o4 ?5 P- k% M9 i, O) \6 J/ n. C1 @8 H$ J2 S% ]5 H' {
;;[
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]]
" m" F. `$ d2 @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]' w, H# n! T1 b/ ^2 ~  _( I5 _
credibility-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" ^1 C3 y# t6 K. ?; r5 K- v
neighbor-total* T( a1 D" [% w
;;
记录该turtle的邻居节点的数目, R9 e+ Y' [: M# x4 [& q" q7 [
trade-time$ \6 J7 \: P% L: S
;;
当前发生交易的turtle的交易时间
! i5 G! D- P# A. v# y$ Pappraise-give! k0 N$ ?" \+ D1 t
;;
当前发生交易时给出的评价
9 E1 c) i0 s8 t( @appraise-receive2 U0 _" X$ Q* e3 }( f  A5 ?9 B9 m
;;
当前发生交易时收到的评价
$ f5 p' N& h  [" R2 g( z" N3 V. o4 Qappraise-time. W  g2 {7 w" U5 P9 h$ a: b- `$ `- D8 i
;;
当前发生交易时的评价时间  a  V+ y# m* N# K; ?
local-reputation-now;;此次交易后相对于对方turtle的局部声誉" E1 f  j$ [; i
trade-times-total) A( n3 u% t2 X3 E
;;
与当前turtle的交易总次数
& y$ H+ i, U) {+ w7 Ltrade-money-total4 T8 p5 A8 q, c) x: S* S$ u, U8 j% f
;;
与当前turtle的交易总金额9 J- k1 y! D8 E$ I
local-reputation
. ~& n# g0 A9 s  p$ f6 Yglobal-reputation
& I' J5 Q# Y2 X- ]0 pcredibility  C# {7 n( R9 U* e) P) X
;;
评价可信度,每次交易后都需要更新
& Q) H% r( S! M2 I8 tcredibility-all+ X/ r, M$ c7 s1 e+ K9 H
;;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
3 o/ K1 A/ v8 R$ j; k4 J8 K  f0 W9 ?+ E; c8 e
;;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; [( b. [( P' X7 A
credibility-one" V. U$ E2 c$ j- g
;;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( j" |1 L0 |- R/ b- Hglobal-proportion  R4 R4 Y# k3 q7 R5 F. v5 q9 s
customer2 f! z) y* r( V! r. B! u
customer-no, M  l% E7 ~5 {6 k
trust-ok
4 ?. d/ D* m* u3 Utrade-record-one-len;;trade-record-one的长度/ G% D, [# a. g1 Q) _
]
: \# ~% [0 X  D5 I% F& [; M5 Q$ \( ]$ |5 B0 r2 N! q2 d  F
;;setup procedure
3 V. ~: ?( o! d2 a1 @; r" x" u
) k/ o& i- r7 Kto setup* U6 d' ?  m* A7 d+ V8 O+ i

9 Z  f- }/ `4 U! \/ }. h5 |ca

$ t& \" x. Y8 M, `9 Y7 o+ ?0 N* v  c) X7 k1 Q
initialize-settings

" t4 V6 `9 T( V; w
5 W" k% n7 C( ?2 Lcrt people [setup-turtles]
, G# t# L6 L4 m. Z( W3 o

! a: @- v' @: q$ V5 x2 g+ J1 greset-timer

' x+ R) n2 N7 V2 O
$ z1 e4 q& R' E  x# {0 L0 opoll-class
7 w% |" A  p6 K, |7 R

8 t2 s& G4 H. O8 k  r1 c0 msetup-plots

" ^  ^- n; V  f+ }7 {" |% y8 H1 X. R& \
do-plots
. R0 ?$ k4 |# M' k
end
" _! P5 ^- N1 h( V/ B& `# B4 d* N" g7 n. i0 r
to initialize-settings
7 l7 d- q: J. O# n% _9 f0 Z/ F5 X, S* |
set global-reputation-list []

7 C0 U- A, ^8 j8 i4 Y+ k* K8 ?- y; U( W
set credibility-list n-values people [0.5]
7 H$ g/ Q% d1 F9 `4 w& w" l

4 n1 v* {; ^; @% d! k$ \* rset honest-service 0
: e  K' n" Q. {* b4 {
0 G4 O: e4 O/ w; G2 g: [
set unhonest-service 0
  @, Y- D. m% }* d7 m
" O) j' R+ i7 ~# p% t
set oscillation 0
1 k4 d$ O" H, i" \  [; L, z
. ?7 R6 C9 L  B( x
set rand-dynamic 0
$ s5 U1 z) X/ y7 S
end
2 \4 \7 b- M- P" d
7 d8 Z' f. d+ C1 Hto setup-turtles - d! ?/ i. ?" y1 o" D( y3 L
set shape "person"8 X  L/ @4 ~( {3 {
setxy random-xcor random-ycor
# C) N9 J3 E/ Y5 L& zset trade-record-one []
6 k) T4 F- M$ X- C5 F

9 f( x+ ]8 ]5 F" f/ jset trade-record-all n-values people [(list (? + 1) 0 0)]   l* Q5 w  X  F, H

% g' W; D% g. v8 ^+ vset trade-record-current []6 Y9 `% t) [- o; V
set credibility-receive []
4 b' }# I+ K! F( Q  e' xset local-reputation 0.5+ _2 j! T  Z) j/ ~6 f% ?; p, }* q
set neighbor-total 0
9 [9 C! d7 ?" t+ ]2 ]$ {- rset trade-times-total 04 h4 F' G" ?: m8 t% H( ?
set trade-money-total 0
4 [. Y: p( I5 I9 ^$ a0 M2 Pset customer nobody; {7 q$ ~6 I4 W
set credibility-all n-values people [creat-credibility]
$ m  ]8 ^0 @0 y8 I( nset credibility n-values people [-1]4 Q5 l7 }+ Z3 x
get-color7 q2 @5 z8 t3 ]% e! ~
' B2 n) ]& W# R2 Q
end" S0 _" c. N. ^. Q* P' A) o

! r( W9 B+ F6 \( d1 G6 E. E% _, nto-report creat-credibility
# U# ]' g, z, K0 {' v/ {2 kreport n-values people [0.5]
5 j. u$ h+ g! ^4 L2 q1 zend# E6 V3 b. ~0 l2 C7 I  a

( C4 m; k2 H5 S. D, `) vto setup-plots  S; `% L, p3 |3 ]* }& L" E
1 v3 X. V7 v7 X/ j% l
set xmax 30

1 H& @# _( I0 Q' ~; L) }, m4 C' K  H* n9 n/ T; q$ x5 S; Y
set ymax 1.0
" e% q; H: o' V! L* C+ O

+ q) s/ D: `! t$ l6 qclear-all-plots

/ ^7 E3 |5 e/ c# U  F
. h' [. i0 h2 i5 t- P$ B" L: ksetup-plot1
$ q: R+ R# c, v  L1 m2 f% ]& u4 |$ }
+ x' b" W$ j4 z9 Z" E: D
setup-plot2
' A. x' E) Q) w# m$ h  R
# W7 t1 i# |- k
setup-plot3
# @/ u" m- N3 ?. F# K0 f
end
: D0 k; \. Q  z3 W0 C! y, Z+ B4 F" d( V7 d: s' r2 n
;;run time procedures# T8 ]4 p* }* D! F+ ^6 L
  o& ]1 C" E4 z, p* t  I1 w9 X
to go
+ }7 v/ O9 x) Z- ?+ |6 p: L% N8 ]7 ^9 P1 n5 t4 U9 f- E4 H' A
ask turtles [do-business]

$ B$ F6 a. x, M/ W3 k( @' m) Vend3 Q7 v: H; R, f3 N: z# D
/ U+ a3 I2 u2 V) h4 {9 N
to do-business
: w0 r0 _, J5 ^  \% L( s4 w
' q3 F7 Z' S3 ]7 q% x/ ]
  y2 y2 O2 T) k9 b. a$ m
rt random 360

" P- X4 D# X# `0 Q. p
3 }7 d( v4 W. sfd 1
$ ?5 G% H' T9 I, K! m

9 A$ R5 F- V3 _( d% `ifelse(other turtles-here != nobody)[
% G. E- [) I* G+ q6 [7 s% A: b' H% I
& n+ ^8 h6 m( m" w3 @2 F' }8 c& ?3 W+ S
set customer one-of other turtles-here

7 l( @& v( R5 o( Y$ q1 `
, }% X# Y& m# m;; set [customer] of customer myself
+ V& f/ r! J+ K  S
. }+ T8 h5 _) M1 R% _, N
set [trade-record-one] of self item (([who] of customer) - 1)
5 v1 e) z( L$ l! Z# c4 ~[trade-record-all]of self7 w, U: ?! s6 Z5 n8 y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 u1 N  ~/ Q0 b* h3 X
! k4 F. G7 Q8 Vset [trade-record-one] of customer item (([who] of self) - 1)
9 U. T, L4 d. A* v- s. L+ R/ K; P[trade-record-all]of customer

8 D% Y( P' p7 N- F2 g9 o! ^
, d% ?1 s  e* ~. H( \set [trade-record-one-len] of self length [trade-record-one] of self
, I, w. P3 Z* [% }

/ ^3 E" s7 q( d! f% N. iset trade-record-current( list (timer) (random money-upper-limit))
  F  t7 t( f9 B! e
/ R$ S  `6 n1 D, t
ask self [do-trust]5 [! I; Y2 g1 E1 O
;;
先求ij的信任度
2 L4 L$ f8 f, s: M
6 E% j/ g; ]' {9 T  G6 R: Q0 m. Qif ([trust-ok] of self)
' ?1 N8 E4 D9 X* W6 w;;
根据ij的信任度来决定是否与j进行交易[
: v# `4 I+ C1 x9 i3 yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* i, x5 q5 r: q* T9 L! f4 `' H8 N5 e( [
[
2 i  l& ^- c; t7 R( y( t

* c5 ]4 j0 \& {# D$ Tdo-trade
+ T  y- L3 m! y0 h9 y7 O

  `/ [  j( g- k* d# l8 zupdate-credibility-ijl

% a4 N* h. ]: E
; i% I  V  |/ U. K) I2 y) {update-credibility-list% @! r! O% ^4 N& g% p& z

) T4 a, z( z. _8 _2 u: A1 P7 q+ @
update-global-reputation-list

5 Y( e+ @# V/ K  H' ?8 v
' c6 r3 B- B9 Q% }' p. rpoll-class

5 [, F8 o( F% W* d3 o( c  g" v+ s/ j+ Y1 {
get-color
& h8 D. y0 j8 i  h
6 o' ]  c/ ]4 T$ q; K; S' Z
]]
; K" J. r. D5 t$ E0 }- M  M8 Y8 `0 o! R7 \5 F: G
;;
如果所得的信任度满足条件,则进行交易* t7 m, P' g! q. j) s
& A$ m; Q/ s( B% h: `+ k2 \8 v
[

0 m7 _% x  E( l% h  U( F" A4 S0 {/ B- ^. d+ [* H
rt random 360

+ Y1 r$ u: _) F1 n
8 g7 P5 a+ x  E7 F1 e' L. Gfd 1

6 V0 ]8 w- E3 h# V
- R4 L1 B+ m5 c8 n1 Y9 _0 U]

# g- x0 f- ]* R) c( |" \9 q
% [! o8 l' q/ a' @& D7 Jend
; V& L! R$ _$ M6 G

% Z4 ]$ Y3 E1 Pto do-trust
) W8 G  V/ l; [! Y$ w; }7 @; _set trust-ok False
* i1 P/ z! j2 l+ [0 K
$ @  O' Z5 M/ w  C7 z# e; ]

' Q5 [) |5 ?$ X  {let max-trade-times 0" ?/ C4 D) Y& E8 K: ]; v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 v" t. Y1 c! q5 _$ J4 O& l" [
let max-trade-money 0/ Z9 T: P- O, [
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 b7 q! ]8 B8 g) i% s' ]let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. x+ k, @  x# u0 m: G
  G. {- _' x3 W. j5 m9 @
5 L( ]% l/ O% K* E. B% W9 {# Z
get-global-proportion
& h# h1 h- b" `! W3 h) wlet trust-value
: u! W4 Z* `0 k9 \4 xlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
! A- _' Z3 d7 Z- Q% B& s
if(trust-value > trade-trust-value)
( N+ N+ K, p, M# k: p1 O[set trust-ok true]
$ y% U  G1 a% d- wend: G( p& @/ O2 i% J+ w
) f2 O( r1 Y8 r( L
to get-global-proportion, P2 ~5 p# V% S
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): a8 {& M" v/ Y' {3 ^' i9 \
[set global-proportion 0]
6 i! J8 U9 w3 ]7 ^! O& n& g[let i 08 \) {& m" L0 [& `# l/ Q
let sum-money 0
3 Z/ N+ W: ^: B! R1 j5 @% Swhile[ i < people]$ D6 b$ K4 P+ {3 ~: Y
[
$ r8 m! T6 q. Mif( length (item i( N( o$ S1 R% g% H
[trade-record-all] of customer) > 3 )
, q* b; T- d: G) {; v$ ?$ i
[, w( h! |7 N+ B! z" W
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 v2 s6 B3 M, h8 e4 C5 g]
* P/ e0 W1 Z0 |]0 z) o0 H9 O; w, C# V
let j 0
# k* X, N6 M: J" l/ U. `4 tlet note 0
1 ]0 v/ n. A0 H+ [4 q1 nwhile[ j < people], `: H1 q/ H: ^9 r; g( }5 a; H* v
[* w6 j% N7 H$ Q# ^, R' J
if( length (item i
) u) p5 @% B- g+ w# u[trade-record-all] of customer) > 3 )

. Y' u( B1 r3 ?8 ?2 y[
- v- J% T# `3 f$ A- Bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ N( u* ~1 @/ g+ l  ^# v  J7 ]) J
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ @( C9 @4 `  S8 H, ?  g
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: R* X4 X& d; y; K5 r+ ^: t6 t]
2 l$ V9 o3 c  F/ V4 C' H* n1 e]$ d2 T" |6 S, |$ b
set global-proportion note  {9 |* w) d* c+ M% o
]
& k: C" G: Z( [end
& Q# H. G5 A, t/ @9 x& z. z) e( p% N- H9 {) r
to do-trade
, ~4 B7 A* H' x3 @4 i+ g;;
这个过程实际上是给双方作出评价的过程
9 S3 _% D7 y; a+ Q) {( u6 uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 [1 x% i- M3 O% N1 e; B2 H4 n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* |2 [. x, P$ g
set trade-record-current lput(timer) trade-record-current
+ d0 a* {/ D9 P3 T6 M;;
评价时间
# e2 u4 J4 b3 n( L' iask myself [
3 }/ _8 a1 C' k' L+ E5 N8 pupdate-local-reputation% v$ p: r* K6 U8 w1 z8 Z
set trade-record-current lput([local-reputation] of myself) trade-record-current) C: J8 z# V7 {7 [
]
9 X+ H7 T9 N& ]: u4 j4 Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 C7 c1 e- O% r4 j- k
;;
将此次交易的记录加入到trade-record-one
0 j7 v8 e) V2 E& hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" w* H: ^+ g4 b+ x$ y; B5 dlet note (item 2 trade-record-current )
5 m  L( E$ M- Q5 V+ n. pset trade-record-current; j  U* }0 F* Q. t1 l2 |
(replace-item 2 trade-record-current (item 3 trade-record-current))

: _9 G6 g3 t: C. B( bset trade-record-current
( A& w4 j" L" a0 d1 E(replace-item 3 trade-record-current note)
% u' m# P, u. H$ \& \. K: j% H% d4 C
1 n# S9 m2 r! `0 K& n- f( ^
ask customer [/ t' W9 U4 s6 z
update-local-reputation3 ~* o. A) }( m) q* n9 u( N$ c
set trade-record-current  |3 G) @; G/ c4 N! }. O! B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 d% D! R  k% J' e4 M" P
]
, n9 R; P4 g' `, }( X+ _
& Z0 f8 @$ j5 X9 f: Q1 |

2 s* o" D; {/ rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- p/ Y" u& _, V2 A" o. g1 ~

9 R$ J0 {; {2 H: y0 @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# ^3 W% q8 r* C! r4 C  U;;
将此次交易的记录加入到customertrade-record-all! l( O1 K% m4 o; v, t
end
; H7 K  n" [. p2 M6 X  j, L  W
3 H+ E+ o! j1 F0 B8 }1 zto update-local-reputation0 k0 R5 G1 |, p( b+ I2 e
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 A; f0 m8 b4 ^: J% m
: \8 _3 V% G  \7 {/ \$ e+ l0 d: Z3 v2 j; C
;;if [trade-record-one-len] of myself > 3
1 U+ S6 E. j- s7 x! a
update-neighbor-total
& _5 A2 I5 C4 a# \, w2 }% Z;;
更新邻居节点的数目,在此进行& j- i; Q/ U' F2 o
let i 3
7 G: R+ M8 E% h! A$ mlet sum-time 0
$ `: t0 P. X& X4 Cwhile[i < [trade-record-one-len] of myself]" O: q* c) }5 S( E9 w$ A7 C
[( }/ k; C( k! R* h% t+ q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 h, @" B# Q# pset i
6 p! d7 V* k4 G; Z2 P1 _) F( i + 1)
0 _" e7 S/ M, }# U; w
], v: V, \% _' v& B
let j 3
5 h7 d  I) w1 J3 U0 Q6 C) e1 |let sum-money 0* F/ t. h3 D! ^9 N/ ~2 w6 E
while[j < [trade-record-one-len] of myself]
9 f- V, Q4 q- P( |; G[; m: }( }" ^! Z- v
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)
$ B8 g: x$ a  Xset j
; c8 f$ `- b' u$ L/ d) K( j + 1)
) n2 \1 I, m7 T, r; V, S
]. j, h/ @1 ^' y4 N  m
let k 3( Z' }. D0 C, x/ G  Z
let power 0: f$ _1 [5 E0 u4 j: |
let local 0( G* ^/ g3 H% a. a. D) N4 W8 l/ N
while [k <[trade-record-one-len] of myself]
# ]; r# j* D( d5 U[4 l' \3 [( y# C2 u
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)
1 R% L* [, H. fset k (k + 1)
1 J8 k, L7 y( B1 B8 e$ _]
' I& Q; T  p( D0 \: u' fset [local-reputation] of myself (local)6 K$ s8 j# e3 I9 y7 x
end
% r) j4 i6 u5 X' S8 l: `  d: n3 W/ ^( V( V$ Q$ I; s) N. x- D' D, W
to update-neighbor-total
9 z7 K+ P. |% G5 |3 ?$ P5 d& I
1 g* Q  e% `) y* r) G' E' pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ A% x  l/ h5 |/ O! Y
. _) B) E0 q( S

: ^. p! k0 M. ~5 iend
/ E: k" ?; _( B8 y0 z1 M  W
6 D' @$ m! E3 C9 r) I2 rto update-credibility-ijl
, B1 s5 W/ d- z% }8 u
4 g  K0 G. y, b( }6 a;;
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。
2 `- E2 H. h3 W0 P+ n* M  A4 J) ulet l 0( x2 x- T( P$ W0 Y" G- U2 g
while[ l < people ]
1 e  `* U$ @+ @$ w5 o2 ];;
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
+ Z5 b0 z8 q" H# [[
3 h  ?# X  r6 Z+ s% x+ t# elet trade-record-one-j-l-len length item l ([trade-record-all] of customer): p4 U$ S  L; {) I( |
if (trade-record-one-j-l-len > 3)0 D! d! C) W6 r8 W: v9 O/ Y8 s6 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+ [5 ?" C0 J) c# N- c: p7 H
let i 3
' Q2 A$ g& t" |let sum-time 09 _8 D. Y  m: |0 h% n# d
while[i < trade-record-one-len]& a0 u1 f- \6 B3 R/ Q5 P
[1 W3 i5 i8 f/ B+ K
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 c( {2 q7 i, f' p! U  iset i
# t$ F, V/ G# U3 _7 W, _1 P( i + 1)
" r8 k! f0 c) W, A: X3 ]
]
1 Z' T9 k: M& qlet credibility-i-j-l 0* `- ?+ D" e. R) B! ~" }" Z
;;i
评价(jjl的评价)
7 h0 K  h9 M5 Z$ j% glet j 3
6 f5 h2 y6 U* S$ \& ?7 g. F( plet k 43 o+ ^& h' d6 t! ?- w* X; y. m9 I5 Z) \
while[j < trade-record-one-len]8 }4 }. C8 l+ i+ n- r: y1 Z
[
0 F, S6 p% z1 J9 \6 [- r5 [( Zwhile [((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
, x7 }* d3 V9 J: [9 Sset 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)
, n! w4 P4 w6 i8 Y" Kset j
9 x9 Z( r# N5 T0 q  d! @( j + 1)
! E3 u9 c- a+ ]0 y5 Q# u) w
]
3 N& w' s3 h' O& M! i/ i$ s  e- Mset [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 ))
" Y, P6 v( ?; s) a6 n% i
7 O2 G" C: M; v0 o  C
' g  I0 V. _( e5 ^
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* F+ F2 ^% l* r) x: {1 Q8 p0 W;;
及时更新il的评价质量的评价) A: B5 S) X$ h- Y5 k* c- s
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- I' O+ ]5 v. D) s2 D: |9 Xset l (l + 1)+ T: z" S# r& W% f: G; S
], T2 m* X' B; b) ]9 r0 b% K
end; [) c: v- {- a' K) W7 V4 K3 f4 c! i8 J
# W6 H% `% ?% j! s/ }+ `; x
to update-credibility-list' N* r# J6 y2 Z. Z0 o! L
let i 0
& L( a" K! X2 p/ ]: r) Lwhile[i < people]% w- O  ?* t+ u/ {* s# d
[2 B: w  f- [  _" F5 H% z
let j 0) m! I' K) O5 t- F) x  G( [( l
let note 0
; f0 `+ ^- B1 a* Tlet k 0
$ V& l+ e1 T1 h6 w; P: d;;
计作出过评价的邻居节点的数目' u3 V( L' H. u' w4 A, G! _
while[j < people]
2 B5 ^. e* V. \' V- `1 b  C[* p$ x2 K& n1 R7 s" v0 [
if (item j( [credibility] of turtle (i + 1)) != -1)' O* D+ u; N! M$ _/ ]( O
;;
判断是否给本turtle的评价质量做出过评价的节点
5 U: l. c+ \; n' Z[set note (note + item j ([credibility]of turtle (i + 1)))
7 w/ m1 Z" W1 E# U. g4 T  w7 E4 a& c;;*(exp (-(people - 2)))/(people - 2))]
8 R" a$ j3 [$ \# ~: C0 G+ A% y
set k (k + 1)$ A; D2 f4 r6 n  d
]2 }( K! t9 w8 M) T& h7 x
set j (j + 1)) }. `& R2 x, ~/ B* X6 h( F% o7 N
]7 u. \* R4 F1 T
set note (note *(exp (- (1 / k)))/ k)
0 O% u4 m$ Y2 _. [5 c! v; Bset credibility-list (replace-item i credibility-list note)
- H! `  U3 e1 {2 X6 b" }- B- N  W( W. Uset i (i + 1)
. P  x8 M: r4 E$ v9 y]
2 L* X" o- s0 z/ O5 b; T  n& ]end* Y) t3 M- Z4 E5 M0 S& ^1 o
4 V" P( U& L5 M
to update-global-reputation-list' s2 n: S4 e5 d4 R& j8 D0 D" W
let j 0! a. T; R) L$ {, B/ \
while[j < people]
) Q1 n8 e: w- f! Y% h[; s8 o* D  Q1 f. w2 e9 W
let new 0
, C" m  K8 d' y;;
暂存新的一个全局声誉
! ?3 F/ A& Y  Q* j0 |5 Flet i 0
$ ]& h6 p/ p& ?# V+ P7 u. _let sum-money 0& j: _* [; M5 t/ J  N
let credibility-money 0
- X1 s: h0 s# g  Dwhile [i < people]
+ b  J, H  Z) F. ~& o4 d[
) O, e+ y" H+ y' e8 sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. P8 Y. z5 C% f( F4 K, l2 |" \set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ H; Y  K; n6 ?) j3 K; [: o& Q" G
set i (i + 1)! B- j, \' p. _1 p
]) f# z+ G+ w$ a) l5 C
let k 0  {% h+ Q: g& e$ w6 Q
let new1 0* N- [4 C1 c0 e- i
while [k < people]( E9 Y  x/ B4 n, R- K! a  a" a
[9 J- F# F: I8 G, f; {8 c5 x
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)4 q# Z6 L  R) G1 V0 m
set k (k + 1)* o3 E, `8 o6 J3 R, x( p
]
) o% x* J- M4 gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) ]% I5 Y4 U7 A
set global-reputation-list (replace-item j global-reputation-list new)( B$ V: `4 M$ I( A, K
set j (j + 1)- J( i% y0 p2 M
]4 c4 f, x( @# c: D$ ^- J
end
1 e3 h9 E9 X+ H4 f) e+ E) j; k7 K3 I& q0 ?( v
- a% z5 A% |3 _& p7 X' q) d
( z% E6 C% w) p; X8 {
to get-color
- R  Z9 v' F5 i8 c# I2 f
! u6 u5 v# H$ q' Iset color blue
3 L: O: X  a! `& s
end9 _& }' X" z5 t# w3 t5 D6 G2 ~! ^6 u

8 r: A* L0 A' u4 M4 V% Kto poll-class
/ m- J8 {" D5 g% gend
, R# B1 H( @/ b( o6 |% u- O4 ~  J) x  L' x
to setup-plot1; U8 m  y+ k6 u2 Q& P
" {3 D( H: ?& M( F! p2 w# K! j
set-current-plot "Trends-of-Local-reputation"
# B# [' U' f7 V
: p# V% C4 ~! z  z( X9 \( G
set-plot-x-range 0 xmax

+ w* ~& {; K8 f0 J, i  @0 U. |& _7 E& D5 W8 k. r
set-plot-y-range 0.0 ymax

5 i/ A. H: O3 j" yend" e8 o9 t% T* g! K. |

+ V' W( |3 u7 z2 H( e( v: T7 ]to setup-plot2
/ z$ t7 x" O& h. I
3 N2 U4 T% e+ F/ mset-current-plot "Trends-of-global-reputation"

5 A$ r$ l8 ]9 M+ ?* z5 b5 O6 X- d2 S) j  n/ e
set-plot-x-range 0 xmax

5 @# @3 m+ C7 @" d3 c6 q/ z" U9 m/ w+ W" ]3 P* M
set-plot-y-range 0.0 ymax
: B, }5 C0 u& M" @: Z. v
end
* [, M5 D1 s* V. ^% M1 f
0 j: `. O/ P* h# V# kto setup-plot3
* A: P2 |& M9 e
  \  @( {8 r6 O7 D6 F$ Bset-current-plot "Trends-of-credibility"

# i+ e$ N  ]- \( K2 L, s# l- s, L8 U" T
set-plot-x-range 0 xmax
* i/ F  |2 M, K
1 Q3 p+ o- [1 r$ D. W$ ^( F* }
set-plot-y-range 0.0 ymax

& T% q; F+ W' d, x- e! ^0 bend( g# v: N' k, L" l& J* a0 c8 U% F

" g5 n+ f. b: h; X" Z+ L; ^to do-plots, Y  A; X) e* g
set-current-plot "Trends-of-Local-reputation"! n0 t  J, R  p* Q; T9 X
set-current-plot-pen "Honest service"
$ q5 Z, \) L4 z% p/ p' Jend
; h- X/ T; C$ L, V0 o6 y( ^2 V" N% p- N
[ 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.
5 N. g5 F! h9 a$ \9 |2 b; s0 U+ M. q
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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