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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:! d9 g! ?. L* t" z2 _: e7 k
to do-business 3 c$ ~1 a9 n2 ^# l, E3 I4 O
rt random 3603 \, o* ^7 _- p
fd 1
7 [: B  t/ I) _ ifelse(other turtles-here != nobody)[  e7 D+ {* h0 H
   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.
: u4 D; E' P( V/ [+ m7 |: `7 V" t8 }& W   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , I2 k8 P3 Q! P- I* j+ c' K. @& J  R
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 J, v5 n$ t; n  j- A0 k4 I$ W   set [trade-record-one-len] of self length [trade-record-one] of self7 v/ J% _$ f" G" q7 w
   set trade-record-current( list (timer) (random money-upper-limit))
6 i# |, p3 C8 Y1 P% s1 V- [$ A* n) q" K; y. ^4 |
问题的提示如下:) n( L  t# _5 ~& t" s& N- O0 I

5 s* D2 Q4 x0 K+ P# y* Rerror while turtle 50 running OF in procedure DO-BUSINESS
) A9 c" J- U& C! C" {1 j  called by procedure GO- Y3 ]* c. I* n7 e2 v# ^/ D& M- @
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' K& N3 w# x- W; i  J" X: e0 ?
(halted running of go)- @: W8 V9 w$ u/ M2 K
: `6 C- n9 ^. K
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~~1 z' t! k9 d: x) W  }1 |
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
0 z% F' b% d- j) E8 ?/ W! H' eglobals[" Q& b8 `; [* G& Z5 F
xmax0 {  ~. ~% n" m
ymax
$ l5 q$ b7 F4 F& Iglobal-reputation-list
  L1 ^; o' ~& k# s
- H3 G: _; I& n* W+ b2 k;;
每一个turtle的全局声誉都存在此LIST
7 q' j6 e% Q* |5 D2 ^credibility-list# U. s* I, ^* l
;;
每一个turtle的评价可信度1 e0 b( f0 q+ p' N: Y6 g$ B2 X, K
honest-service
; ^3 q2 n, R! C  ]unhonest-service6 B8 h" u, E$ n1 J3 W. e& V
oscillation
6 k$ a4 B' ?/ u' |) j  y9 H; T0 xrand-dynamic
" ^& K5 U" W1 l" q( g]+ h1 O) q$ B2 E9 _, z4 |
+ {* z' n6 R  q1 x) O0 V3 H
turtles-own[! e( o" o  @( {
trade-record-all8 E, _" y4 u! a1 X' u, f  Z
;;a list of lists,
trade-record-one组成: c* s' K& }% j( d! F6 f/ z
trade-record-one
% b6 z  }  y0 c" b! G6 S;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; Q- q  f* g2 N( `8 `# D" k, O" D8 Z
; h9 r; v: S7 c9 N. V
;;[
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]]1 a7 t. D* f/ K+ e% G# J
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]- h( n1 e8 @% |
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
2 w  ^/ X4 g4 [! x2 ?1 L3 jneighbor-total
7 a" j/ k8 k! Z" F' o3 `;;
记录该turtle的邻居节点的数目. }$ _% x: q6 l' Z5 [" m3 j# @4 E& P: a
trade-time: w! M' o4 L+ q5 t2 k4 B0 _. g
;;
当前发生交易的turtle的交易时间" z* ?( ^  q* M8 o" N. H3 F
appraise-give
. x5 J, \' }/ W& a2 \$ _;;
当前发生交易时给出的评价
/ H; r* u* `% q+ ~9 gappraise-receive' e! F" G/ a* S, {
;;
当前发生交易时收到的评价: ?) \7 S3 y5 q$ Q2 r. g
appraise-time
" u0 x* k1 [9 O/ f0 O& I* q;;
当前发生交易时的评价时间
5 n: w5 K! L! Xlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
- A) B( e: ^! I8 Ltrade-times-total
! i2 o9 D9 e0 U% l& ]: Q;;
与当前turtle的交易总次数
8 [' {- x' q3 x5 Ptrade-money-total) W2 p8 n) H: z7 F: M- h
;;
与当前turtle的交易总金额
3 t4 ^% X( B$ O3 t- n" x9 X0 glocal-reputation
3 e9 X6 ^) e6 f! J1 m- |global-reputation
7 V% G1 z9 j+ [9 m0 _credibility5 r; [/ l- I0 d  g5 o' r
;;
评价可信度,每次交易后都需要更新8 W# ^; K% D1 S) b
credibility-all
  K: P" j, l# E+ t* H* N! ^;;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* C. P% u  Z# d1 E9 E& U
/ }" |; t3 k  k. m0 e7 D6 ?
;;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$ ~4 [; z& V' V/ f
credibility-one1 f: Y, }1 u. @( R$ a9 \6 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
0 E% H/ o4 J% Sglobal-proportion: r8 u: `  n) Q3 Z; C6 s
customer/ j7 c$ M8 u9 r. W
customer-no
- I/ A$ x% u! s# Vtrust-ok
1 a' H/ ^$ w- Mtrade-record-one-len;;trade-record-one的长度) m& F, P. R: C* w, ^* w1 K
]+ W( c. _8 |  z
& o9 B: a; B+ {5 x1 [
;;setup procedure
+ P2 V% S3 p1 j+ {# S) W) H7 E5 w
to setup2 b" V* a6 r9 a5 j. ~) a0 Q; P6 {& s
0 X! F+ c4 A& ~# y$ {- E& k
ca
4 C4 C. v( R: s, ^8 ~
6 B+ A  J, C' R2 X! x
initialize-settings

3 x3 A. i+ q: M1 S( [* f; W9 w( I  ~* a: j- w- P! U0 L  v
crt people [setup-turtles]

* {" O3 h- l0 d- w6 D/ I9 |% C8 X, \: X/ U$ ^4 K$ e" L
reset-timer

. r: k' b# \# c3 ]8 y" I
, p4 Z* M" z! I6 R$ h, Y; ^poll-class
: v- M% C; h! O5 u: M1 W
9 Q- l9 f! |( F) K1 k% X
setup-plots
! n7 y- q; f& e+ H/ f
3 Z3 v: c, ^. m0 F) i- h/ \' r3 Y
do-plots
" k6 W1 f. M; {/ b/ ?
end' J. \2 J# ?/ U9 k. I/ [
/ `2 S2 `( s2 f) S1 m) I
to initialize-settings
  Y! k1 n! f$ g: w& A9 Q; r4 L* k: q
set global-reputation-list []

% c% A# S4 b: `3 O& y- g: G& G3 V/ F, \3 P3 X, f# b% I& a0 _
set credibility-list n-values people [0.5]

; \( H, a/ ^( I1 O) V
$ o/ G# ~! d4 Z' {5 T8 {set honest-service 0
! p1 J- X. {- i! d: T" D2 t
/ c7 f% E$ D( L# {6 x- A
set unhonest-service 0
) B) k" H7 N9 }  U, \
# k' r: X- ]2 P+ a( Z2 A7 k( f0 p
set oscillation 0

& q& z8 N% F, v$ |
- m4 k4 V  Q) z- n3 y% Oset rand-dynamic 0

( ]  o8 N: k7 G$ Y( n& `! \end
  m' Y0 b1 z$ @* z& x" `$ l8 b
+ t. _8 n% z& k7 O6 z9 tto setup-turtles
- C% M  l1 d! x+ \set shape "person"7 H; x; F; M' ?7 i) z3 n) b; ?
setxy random-xcor random-ycor
4 }8 K+ z6 |- rset trade-record-one []1 a- r2 j: I& n! F1 e7 N* b7 u% B
7 v# q8 T4 y8 M! @/ \
set trade-record-all n-values people [(list (? + 1) 0 0)] # w6 ~& \% t3 q) t$ L

! T; b6 X" q/ Sset trade-record-current []- Z& I0 l  n4 D9 F6 y
set credibility-receive []
* {3 d3 A! _. _% C: Jset local-reputation 0.50 H0 k/ Z5 D& A8 Q0 u
set neighbor-total 0- F# g% M. K% q1 ^& a
set trade-times-total 0
0 g% M0 k% G- o9 K& s9 Y+ B! ?. ~- Iset trade-money-total 0
4 G" r9 z+ f0 ^' B, i, aset customer nobody
! w" P. P5 f# o- _; W; A$ V0 d( J! |set credibility-all n-values people [creat-credibility]
$ _! X7 j) g# Z4 Y  A3 pset credibility n-values people [-1]3 ]. s. ]( y" m; {6 {& {3 h$ M
get-color1 B  T& V6 [' R" x7 P

+ S+ {! k" {. pend' o7 `; ]6 `1 `7 q5 s5 {' g& w

0 u1 ^- `! ^9 v5 ^8 S5 R* _to-report creat-credibility
. }: P. b4 `* \5 E4 [" xreport n-values people [0.5]
/ j; g0 |$ @; c$ Nend
: P7 J+ m& t/ p: w0 ]$ N3 O
) E6 [5 l' X5 o3 Ato setup-plots
# k9 d- M3 m6 e  U5 x( ^% Y! L# h! c0 V9 P8 h
set xmax 30
" T! w% R8 J4 h3 b8 m7 y% Z6 p8 g
. d$ s) k9 P) k- Z
set ymax 1.0
& w5 y2 w/ L2 `4 }/ u/ f

. D* Q# d3 ?# H6 k: Eclear-all-plots
  t" m6 {4 V, J; _7 p) @
* O; }- z, i& ^0 m% E5 `
setup-plot1
& d$ ^6 X, k# K
4 J5 d" J4 u6 E7 v, v8 E. M! I1 i3 f
setup-plot2

; f1 C0 P2 f$ [& {% i/ N
4 {. ^8 B& U) D; @1 Dsetup-plot3
' z# a8 `+ ~: P, \1 Z. a! E. x
end8 {% _( t) m- j. R. }+ ]6 y
( q/ }0 D4 _5 c' o0 T
;;run time procedures5 P# ~% j+ Z* s
! e8 ~3 P! q7 s3 q
to go
: o$ W+ f' k9 e8 u) ~' o2 Y
! G% U) S8 j4 ^) r/ R# w) uask turtles [do-business]

! S7 P5 D, E- P) a" w" Qend  [$ S2 T6 T# ~3 G8 @9 ~0 i

( \; ^5 A8 z. S9 Ito do-business $ B" E& m4 e% _6 x
7 ]/ a/ n9 V5 e8 ]( Q+ j) P1 h3 I

6 i& O3 A0 u9 L+ K1 ]% prt random 360
/ l( z6 n) P0 X$ a5 t; i8 D

: k5 p) n7 L8 D4 {. Z# Hfd 1
6 t) o5 S8 k* K+ U: M; x

; \( c8 j4 Z9 `' n0 k5 nifelse(other turtles-here != nobody)[
0 j2 W4 Z, p( O( O* Q
+ ~. u) A" @- V" Q# S
set customer one-of other turtles-here

! m$ z" E+ A) ]+ \! g# [
' s- B2 n3 _, n;; set [customer] of customer myself
( p8 b8 Q  J9 B6 R8 ?( Z4 M
. j. D# P" U+ y6 @' ], K+ v; Y/ @7 }
set [trade-record-one] of self item (([who] of customer) - 1)
7 O# x* l& {" G% W8 Y0 K$ n8 T7 D[trade-record-all]of self6 x  a' J) p/ [: C
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 A  i) F( U- |+ T
4 E* p+ F8 i5 S/ t3 ~2 z& x1 Dset [trade-record-one] of customer item (([who] of self) - 1)$ J9 L* ~! P' Z
[trade-record-all]of customer
- W4 ~$ E8 a/ A6 c0 }+ N) W+ Z) @5 s

# _9 Q, k7 v: @% k# n0 Z4 z  M% xset [trade-record-one-len] of self length [trade-record-one] of self

; j5 l" o' P" q: t" _: A. {
2 p1 c1 Q8 I* I) q. ^7 A- ~1 j3 Rset trade-record-current( list (timer) (random money-upper-limit))

3 |( `) w+ `9 j/ k1 C/ {" i0 B4 N, f) t/ V: ?
ask self [do-trust]* ~- l5 c# }& T& L4 ]
;;
先求ij的信任度& S* e; I1 L% z
/ l* x6 ~5 J) ~7 i! D5 m* O
if ([trust-ok] of self)
! q) K7 q6 T' \3 J8 X;;
根据ij的信任度来决定是否与j进行交易[
2 P; z! b5 r; B1 n3 iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- C" ~3 D; @0 ^& q( |$ n, \+ K& ]

/ l. s3 q+ U) o[

- Q# h! s+ I1 \/ `4 c$ W0 J  [0 t# }5 V6 V' o0 x7 S9 o
do-trade

6 Y2 q6 k, d# X: ~/ K4 T8 z% Q' I: t# ^8 K
update-credibility-ijl
' n3 ^( F! @4 e
" q% z+ W' |; K0 K; F3 w% X  X
update-credibility-list! l+ z& L1 e, D0 |6 {" n, b8 f5 U; Z

  R) o6 C6 c9 J- O$ Q
& F$ r! F& `5 B3 ]% Q; supdate-global-reputation-list
3 `7 M' y9 e/ L
+ M$ ]/ z7 j  y8 Q5 D: Q! A# f
poll-class

9 E! _  }  ?% }2 N2 Y$ V
, ?2 R. ~: e* x0 Aget-color

& ~( M# _; H& ]0 s& c! l( G' C" d& G- n4 E; e
]]% M: N8 a9 l- `7 ~( H9 N

4 F0 A( [- J- c;;
如果所得的信任度满足条件,则进行交易& w+ N) ~& B2 I' n4 ~

8 M& e+ K' ~- k  m/ c4 c[
6 K% j. c1 P5 C% h) A" y
2 R7 ~7 A) R' g% Y! Z
rt random 360
  L8 l! m4 U9 {9 {, r  O& @2 L

% M4 D+ }; m& C, ], ?0 T, \( Bfd 1

) K& t- Z- I& I) w! ]- G; n+ j2 Z& F4 X( ~! G7 b( A
]

6 e9 H) k" Q5 j  v  p0 P
6 {# b1 h5 N. N' Gend

; r3 g- z, W" J; C& ^1 Q
9 N, l$ Z  C* `7 Rto do-trust
. a! f3 E1 z0 Q6 B4 Q+ I0 B8 Wset trust-ok False3 G+ \4 Q0 f2 z6 S3 U* s0 k( ]
7 h- a: y0 R% L; _7 S

% U9 f; H, E7 b5 w0 n1 O2 o+ Q( plet max-trade-times 0/ R1 R( K: j& E8 ]& M! x7 a+ q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. P$ o: q* E: L3 E) n9 @6 o
let max-trade-money 0( @+ q# B& z5 j
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; q' W. l& v+ l5 F/ u( ]
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 J( N0 ]+ y) c  y* N5 `$ b  Y$ \3 d$ d: r3 V$ K7 ^
2 E$ ^9 J, E5 v
get-global-proportion
/ e6 T9 v* J! S. d8 [* Klet trust-value
6 M% C, ~0 v2 G7 H& Tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

2 [9 \& d  K1 u  ~if(trust-value > trade-trust-value)  W' X) f$ E' L! B
[set trust-ok true]
/ z; U# a$ {4 G7 {/ a+ C8 vend9 C- G. [6 M8 v( g3 D( l2 O
7 t; B8 O3 U" U8 D' [7 ?4 ~$ t
to get-global-proportion
7 ]( U+ ^( ]: o% b7 yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 f+ }. a# i# u: C[set global-proportion 0]# x4 Q) W: D+ Z3 u. T2 `' a3 _
[let i 0
; Q0 V  x1 z5 C& k1 t' k/ ylet sum-money 0
) j- r1 @4 E; U, A' U0 Bwhile[ i < people]3 _1 V( L5 n! Y  V
[/ I5 T% U' {0 U/ Z* l0 H
if( length (item i& }1 M( B0 l" c: e7 v
[trade-record-all] of customer) > 3 )

& v- t* m, n  q' t/ B. t3 h# e[  D) M9 _6 Z% H5 {
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 l6 M8 S! s# o) v3 C
]
& X/ p$ q3 f8 S5 _, g$ O]
* h3 {0 T$ z4 D" `- ilet j 01 S: k/ Y+ v, V" k" L0 y8 [% |
let note 0
+ |: J5 @: x9 K7 A9 D$ }while[ j < people]4 G, }% w: w/ t) y1 l
[
$ T6 N+ S# |6 _# i% Zif( length (item i
5 {4 v- m/ i. V4 e& p+ h[trade-record-all] of customer) > 3 )
5 K6 E, c1 I+ z8 a7 Q0 a
[
# I) k, y) L: eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* C' Z" O" m1 f$ Q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ K( f# Q2 G$ ~- W  X
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. l) q3 N7 d3 I2 m  l]
" _. y! Z" y* Y1 Y% ]0 r]; M6 P4 V& f, x5 x  G, W/ z, N9 i
set global-proportion note
; f" {( T( x( s( J]
/ H8 Z# I8 D8 m+ S7 @+ d/ w: D) v' W" zend0 N" s, w$ q; j+ \# f, p! z7 h: M, @
( l; N+ m/ M6 U/ r3 ^4 M6 T
to do-trade1 R- d8 b: J! z% U6 T
;;
这个过程实际上是给双方作出评价的过程1 g$ F, }) h7 B- r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 W2 a8 U5 Q! a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& ?6 T" ~) d3 k5 p5 f) `+ _% gset trade-record-current lput(timer) trade-record-current/ t7 a0 a* p6 `# K2 {, f
;;
评价时间1 f  U% h6 C* {/ h3 a
ask myself [/ a7 T7 ^1 c" d, b3 M6 g# S$ H
update-local-reputation
- Y+ ~# o4 @7 d, T1 cset trade-record-current lput([local-reputation] of myself) trade-record-current
6 ]9 y1 N3 C/ P4 h0 f( k]
! X4 K! ?. _( {set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) |, W4 i( Q" s- s' S6 {& r6 b
;;
将此次交易的记录加入到trade-record-one, g6 _! ^, n" N# |) S( t
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ s! c/ g0 R) S2 U- Dlet note (item 2 trade-record-current ); v& \; j. M! q" p3 A9 |
set trade-record-current
' B1 h$ m* E( N) ]! Z2 g- s(replace-item 2 trade-record-current (item 3 trade-record-current))

2 _6 l0 n1 C" O7 P) ?set trade-record-current
/ o# C' l2 ~' f" j(replace-item 3 trade-record-current note)
1 _2 h9 X2 l6 y# X
: e( Q' i3 e* p- a
. z. R  _( M  ~. H  o( {
ask customer [
0 N6 |# z+ v" X4 W6 s' @update-local-reputation
# D3 G+ g9 Q% y* @- U% T0 D/ Kset trade-record-current
3 C/ U/ M2 d* k! t; J(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- v! _) ]5 Z: @$ i/ @+ j) b. M# Z]: t$ H4 k0 {8 a1 `  ?: e3 \
- k1 @! I3 d; _
+ N  L" `6 _% }0 ?8 G) U' X- W" }
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, [8 U4 y6 H. u" ~* x8 ?  j

8 G# O) U! Y( a2 s6 E9 }5 [# S0 Q; |set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' l% ^3 _7 ~& }! z+ O
;;
将此次交易的记录加入到customertrade-record-all
' {) n( M( _2 {- Rend
* ^3 a2 N* J$ c: b- ]* `- g1 |) p7 Q  ?% b7 i) |
to update-local-reputation1 }3 y+ K9 ?: o% X
set [trade-record-one-len] of myself length [trade-record-one] of myself
, R( O4 v/ @: B0 U
3 o. \* f0 ]9 G7 r# p0 @$ ?, m) D9 S! i1 i. q$ y, U  l! L* o
;;if [trade-record-one-len] of myself > 3
1 q$ y3 |" K' K* f! J
update-neighbor-total4 s* u( |& C- c! C3 ?
;;
更新邻居节点的数目,在此进行
" p) @; q# ~, d' s2 f& rlet i 3
/ ]% P9 {1 p* z" i0 r2 _let sum-time 04 g. M& g, H- m
while[i < [trade-record-one-len] of myself]7 n0 m: @1 f, i4 a& G3 t0 }- V
[. f' Z3 ?. T6 ^8 r  k$ ?) y* `& P& O1 q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: s! U2 b6 Z9 j$ ^( m7 P: h& f; Rset i
7 D9 |* \. p0 W( i + 1)

( x- Z+ ?6 M% ]% K/ m; c]
8 I9 ^/ w# c$ tlet j 3! `/ d* P* x2 y1 V' Q* y% ?. a
let sum-money 0
: t% K" b( b6 c" M7 Xwhile[j < [trade-record-one-len] of myself]+ M5 m- H: Z  o2 ?. L
[/ E2 W" p' G+ }' z6 y, v- z
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)
2 Z6 H" s; [, |0 {9 {set j. t+ T) ^0 k8 c( n
( j + 1)
# W! o0 K7 u, z  G/ c) A, T2 P
]) ^" ~5 H2 {. l/ R" K
let k 3
( h' o, V, E- ilet power 0
, z4 J7 w. L: Klet local 01 J: l0 ^$ Q4 U
while [k <[trade-record-one-len] of myself]$ A. F3 `) j( H. m) t
[
6 S) C% k! C2 W5 Wset 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)
' b2 J3 i: K0 Z2 W0 aset k (k + 1)
" f: \# }' S5 y# X6 h1 Z4 e% k]6 R6 _0 T" O; H4 T
set [local-reputation] of myself (local)4 ~3 r# h4 p& L. h
end
1 U. W. M7 F& B7 {. t9 Q6 x9 Z3 y! i2 t; y: s, B& s
to update-neighbor-total
/ Q  L2 d. M2 q0 |5 h. R' D# W( o( }; x. x% F: |' w  r! C# X& X! X
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# {, g7 ~8 d% B- N2 P8 X$ B# J
5 M) q5 K% P5 ?2 N% x/ j

$ T" i0 ~8 e9 m! B/ h6 rend$ C: N: _% J* O! q0 O, B

, |6 t4 Q2 E* K  Sto update-credibility-ijl ( q1 O, N/ v5 r+ g
5 w5 I; a, H2 f7 M4 e7 ]- {) j
;;
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 y; j. H' ?% j( f7 [+ k" h" ~) alet l 0: K# J; x0 x& K! h) j. D
while[ l < people ]7 k+ E) }- b/ s7 }$ X7 P
;;
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( q. L) Y$ j' H: l* ^6 J2 U
[6 y, I! l5 r2 D
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" D+ o, K% Q% X4 G; J/ ~- @if (trade-record-one-j-l-len > 3): R5 _; P2 h& c. k1 W5 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-one
( |6 D; e: v) M5 N# R* ], glet i 32 `6 q$ t) B% }) t. ]' l
let sum-time 00 J2 I3 z/ M7 c9 H* V, Z% F% s
while[i < trade-record-one-len]
6 A- g9 Z6 X# m4 E[
, r3 U* E; U  z1 pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): U/ o$ V: P7 {9 y, q$ _
set i6 u3 G% J) h. K) `. L" N: }. y( Q3 R
( i + 1)

( M. v7 I0 t& []
6 I( g& _$ C# qlet credibility-i-j-l 0
0 x- @1 v6 f# n3 n( A;;i
评价(jjl的评价)& M+ d* X( X/ v7 A) g8 [  u
let j 3" s3 Z, w, ]$ U  M/ m2 L
let k 4& `2 q$ f& E6 m, c8 s
while[j < trade-record-one-len]7 R# z3 I: p& s4 n1 w+ k
[
& T7 a( Q- V2 w( X5 Cwhile [((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8 ]5 c- \! r! D0 x" Z# v
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)
5 y7 @- c( n$ e; Oset j8 u5 q+ @9 Q5 z2 o8 h% Q3 n
( j + 1)

; A  ~9 m) H- M]: N6 E- B4 M4 r* D1 B0 m+ r
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))( i* P. ?  O& d% p" W  T: t
: q5 C8 `3 |6 ~, N; Q9 Q
3 t( o2 Z' x1 u
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 {( e7 F9 F. v
;;
及时更新il的评价质量的评价: S) \9 z1 W0 F' [+ L! j
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; f* a3 _4 z: L* T' |$ T. ]set l (l + 1)2 x$ M; f9 v8 U1 p
]
7 j1 W& w* G/ h( u, e8 p  Xend
5 I" n' z. [2 q- H$ k9 d9 X9 l# Y1 s" D2 i
to update-credibility-list' S! `5 t' Z0 n3 r6 l; u( ~& J" z
let i 06 |' Q. h" W1 Q1 H
while[i < people]
6 s6 m: ?) f/ }# ~0 `# S[* @1 ], f6 V7 k1 R. V
let j 0
! I3 g3 `% E9 H% Vlet note 04 O- \# I& A$ @7 Q
let k 0
$ F, t, K/ t1 c0 b9 e' W* t+ A; C; {;;
计作出过评价的邻居节点的数目
0 ?7 `4 g" b, S2 rwhile[j < people]7 q- _& u0 c" S+ E# I7 v, w, \0 N
[9 p, w0 |& P( I* M3 W$ E( }& ~
if (item j( [credibility] of turtle (i + 1)) != -1)
9 l. ]+ V; n) G;;
判断是否给本turtle的评价质量做出过评价的节点" h1 e$ ~% f, x+ N- H9 ^
[set note (note + item j ([credibility]of turtle (i + 1)))) b& Y" r4 S9 g4 U+ L" a; Q9 s
;;*(exp (-(people - 2)))/(people - 2))]
7 h9 ]1 y$ K0 V$ ]9 t
set k (k + 1)  n) g, `0 W7 n3 _4 B( k- y
]
% @2 Y. B& o5 C4 e! N. K; P8 Jset j (j + 1)4 z3 c( G. i* r' I) l
]
! Q( B. e* T# [8 @$ |+ q- D$ p6 wset note (note *(exp (- (1 / k)))/ k)( b$ D  \4 K5 C5 L4 d% \/ i% S
set credibility-list (replace-item i credibility-list note)+ g( Y% b# c) ~$ a, k; K
set i (i + 1)
& {  p" {8 K- p7 W: q' X( x$ x]  _# q- K4 D) b* i
end; u& }9 Y+ E, r" V6 Y+ b

, U, u1 }2 P% ?: ^to update-global-reputation-list
6 F. p! p- D1 }8 ]2 u6 mlet j 04 b" w. x. a: \0 y9 |5 {2 l2 v
while[j < people]6 A! x2 a$ k  u$ o, B1 @+ W1 l6 T7 E
[
+ k1 W$ o$ o; W4 K- X4 plet new 06 |. r1 W4 Y8 |' ^2 ?( F
;;
暂存新的一个全局声誉7 e) V! T9 g1 G: Z5 o  B. b
let i 0. j" Z+ s+ V  A, b4 b+ {4 d6 @
let sum-money 0$ p& q, j. @1 x% j+ I
let credibility-money 04 t- p% w0 f2 `( w$ U
while [i < people]+ B( R6 n. e$ @3 C9 A: q: ?$ ~
[- r* ^: }  d+ a0 G9 G7 A; i( v
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) [" z$ e1 _( p5 l' e+ P  J
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))3 M' {4 n$ v& j, X" L  f
set i (i + 1)- W8 p) t- e% T0 Q. W  O
]
4 s5 W7 h# T1 B0 Q* Blet k 0- i* L: a+ J, @% m' ^
let new1 00 `) z4 D  H. d! a2 Y2 o
while [k < people]
0 ~9 `7 j' I) P* u2 b[# s- J. z8 ]  V2 V* d
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)' Z4 F3 q( G" L# w/ ~3 b  N& K
set k (k + 1)( m) s, \8 T- E! \; ^
]5 I+ A9 \$ ], N, i6 ^
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 w% z3 G; s4 q" ]' e$ t9 _7 H' l3 Wset global-reputation-list (replace-item j global-reputation-list new)9 h: R: T+ c, g
set j (j + 1)$ V4 F, F9 V/ W6 @$ ^
], H  u2 X% @7 K  A) ~5 S
end
3 _. w/ n/ W4 I" f. h' r# e: T* ^
" t7 l9 v% y( m3 ]2 ]- P! R: I* H3 e0 i* `

8 J1 B4 q: x; g9 U/ ]2 cto get-color1 ^3 G, G' C$ o0 M; I8 r1 D

  P" P1 L1 U6 Dset color blue
) n) t' B0 A- e$ {
end2 n& F, m, ~. V$ n

6 E! e8 \; m/ Z5 u" _; Cto poll-class" G  }% b* `% \$ R: ~
end9 q* x  z+ ^5 M# D

4 Q* Q, B: o8 vto setup-plot13 e4 E) |8 f# {; p4 [

" q& i% N* {8 f0 [$ Jset-current-plot "Trends-of-Local-reputation"

5 J( ~( Y% w4 C2 c% n0 z. z# C" F) t# r2 f! B
set-plot-x-range 0 xmax

4 R. k# E0 [7 v# B3 T. U
7 d5 j4 ]6 w* t& A! V4 x) B' oset-plot-y-range 0.0 ymax
( q/ e% [: o2 x
end; @1 J; ^& z7 J, D0 y
" D4 W( |7 z: n9 m/ [, P  k$ W8 ^
to setup-plot2
6 {8 Y8 X. p2 R# r, V6 B7 W. |& C  K9 y" `8 Q3 e- Q- f
set-current-plot "Trends-of-global-reputation"

, a3 J$ s# Z7 ?2 ]7 ]- Q
: A, A* x. f1 @% Bset-plot-x-range 0 xmax
' D) q+ h1 o& e2 e

1 Q) G( C' S5 Q8 h. vset-plot-y-range 0.0 ymax
  A& L$ w. X* o0 H' }
end
8 d  U0 e2 @5 X% U* c) D
" ^7 G( B" o4 _$ I" j- {to setup-plot3
9 I5 }( J$ i6 P; N% a
) Y0 L* V$ J. F4 H0 aset-current-plot "Trends-of-credibility"
/ ^: C  y  i3 q
. j- P' U! J8 j5 a( p
set-plot-x-range 0 xmax

$ O. I! ]) \  v% {. f) _
6 J+ k4 n; g% z4 ~" S4 Gset-plot-y-range 0.0 ymax

- I4 U5 g. I- K; J9 uend4 c& o2 y& W2 L

- q  O5 d/ d; ]; B( N. Tto do-plots
8 y  J- n3 q0 V/ s& oset-current-plot "Trends-of-Local-reputation"
; a" E8 A/ M; \4 Kset-current-plot-pen "Honest service"$ I$ n, b, {; D# c
end
" R  M: p) [5 v0 b. o0 h0 }7 c
7 k+ ~3 u8 L# ?0 ]- t3 P' q# u[ 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.
6 g  L" r+ k) p9 z
+ V& W* S; ]( Y/ M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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