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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:- A" g+ ]: C2 u# ]& |" K6 z1 K
to do-business ) P5 B9 p% e7 X8 J4 x6 v
rt random 360
/ U$ l* {) y+ V; K8 E3 k! c fd 1; I5 q9 y$ }0 D; @
ifelse(other turtles-here != nobody)[' L- h  U3 K  v2 |. N: c
   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." |) |) u8 ~0 J" D0 W
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 o) l. A8 S* x: m5 \4 o( r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& I; I5 c5 Y) n3 r' h3 H7 k' K   set [trade-record-one-len] of self length [trade-record-one] of self* w- e6 ], s1 @( ?& C3 l$ P
   set trade-record-current( list (timer) (random money-upper-limit))% q/ \% P+ a. O* v% R

+ c7 b" F' F) |( I( u6 F. |问题的提示如下:8 i; E4 [1 C8 }4 W, k" @

  v8 b- R) Z( E8 N, z5 m; Z: _  d# yerror while turtle 50 running OF in procedure DO-BUSINESS
- t0 t6 ~' a0 n9 n8 i5 S9 }# d  S  called by procedure GO
# P5 c" f& w- {9 O/ uOF expected input to be a turtle agentset or turtle but got NOBODY instead.& E+ q3 X7 ]$ C* W% `
(halted running of go)+ F3 c+ u) @; L$ t) Q0 ^6 n: l8 t
* P$ V% h  ^3 G2 ^/ n
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
/ R8 u$ z4 Q; R; M" Z* B. i: i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
4 K1 w2 d$ q; o+ w: o. U$ p4 Yglobals[$ O9 w4 `4 M" U! v, M
xmax
6 ?; {( h( s+ B6 ^& d/ H1 o& yymax% f" h( ?2 v& x) l# e
global-reputation-list
1 e+ j: @9 q7 h1 X6 |1 {
" i. r1 H$ \0 ~  }0 A;;
每一个turtle的全局声誉都存在此LIST' \7 z: T" `0 c' k/ R) V7 |
credibility-list
% ?9 v1 Z6 @) e  U8 C;;
每一个turtle的评价可信度0 ?: x* G0 k: Z% M' {3 z( ?
honest-service0 K& V1 J  N6 U  L+ r% G
unhonest-service
' W; `8 M7 z% s7 Yoscillation
( E0 y: c6 T+ K  lrand-dynamic
% O; m2 {. t3 t/ G]
! @/ b0 l$ q* C; q+ R- q
  w8 d/ {  E" q& x# u$ n# Y/ ]. jturtles-own[
  n8 C( [3 ^6 K# Dtrade-record-all
% Z! B# E4 U. U6 Y+ ^( a! [;;a list of lists,
trade-record-one组成
5 k- e- L$ |, s' n2 k8 g5 N  Q8 p) rtrade-record-one
3 |% j, }- p9 ?( d;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 H1 {6 @3 \. B# E; a, b2 }# x* Q; n0 j$ y' a; k0 g) v$ w
;;[
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]]* ?: w2 d5 T# Y/ I, v" a7 I
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]
  ~, T  |, g+ W6 D2 wcredibility-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
9 r* n: }+ n" ~# O- ineighbor-total
" ~( {4 v6 t, g2 M+ g8 z;;
记录该turtle的邻居节点的数目
6 H* b. J* y% W2 @trade-time6 X6 K1 j% c3 \. _9 ?7 h
;;
当前发生交易的turtle的交易时间0 w, P& W! h& W
appraise-give
# u/ l/ E# P4 y- N$ V" R0 [;;
当前发生交易时给出的评价: T: D8 z- o% m5 y
appraise-receive
9 f- O3 H2 J4 C" F;;
当前发生交易时收到的评价; P$ ]( t' c% `, C& W; K
appraise-time
) d/ u: ^3 ?' s& A) u8 r;;
当前发生交易时的评价时间
% `/ I/ P7 S/ elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
  p0 D; _9 ^- d+ E. H! otrade-times-total% g. p0 Y3 ~, x
;;
与当前turtle的交易总次数
4 ?7 ~3 H7 B6 M. R% I; a1 v) ttrade-money-total7 }6 f8 E5 x! V
;;
与当前turtle的交易总金额0 c6 `' B  x/ \; a) v. \
local-reputation
  l: E4 h9 F: ]1 }global-reputation
( S9 w2 T7 K% `/ y7 L4 }credibility
- t& G) [8 i. V! a- k;;
评价可信度,每次交易后都需要更新$ A2 K& C1 N) L+ u; _1 [7 p5 z2 d
credibility-all
: k; p. _& x; Z0 U4 ~% u6 `! R8 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! ^) e8 c9 ]0 C. p) a& I

7 p; w& O2 {! m# ~( G0 B( D;;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
) R! t8 \+ m# s' @credibility-one
9 @0 I1 f: {0 _$ F9 p- Z;;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* z- q4 t0 i& n" m
global-proportion8 z& n! ]7 M# k/ r
customer
1 E, n8 n8 \6 U0 ^3 Rcustomer-no
3 {% k" J  T  G0 m0 N' {trust-ok1 d% R, Z( Y; `( [, z; I" T
trade-record-one-len;;trade-record-one的长度
# Z6 |1 I  D  c4 C]
) n1 T5 E$ K+ V' g! r+ J9 C1 B- m) r1 C; `) D6 i6 V  s3 {  K/ N6 g
;;setup procedure' S/ U) Q1 z$ k+ }; }0 Z

( G) a( ~6 _. I4 A5 j- C! ato setup
: ~; O! O5 d9 W. g0 b; j
$ y: v0 {1 B; }- e0 v. sca
* F4 ^- S. Z- L  u1 ~
) n) N7 K5 ~, V8 m$ Z* M
initialize-settings
( a0 C& V1 u# N, X" ]4 k
8 }8 a) v2 k( r6 G
crt people [setup-turtles]
2 r. q# p6 \5 x; y, N' Y5 N

/ n1 ?* q. a% S/ e5 A' [! {reset-timer

4 V# x. K: X' o' R7 |
6 Q* I1 X  F0 u0 n9 K5 O, n; y/ hpoll-class

( {# F$ w, V$ P" g! K: t3 n4 k. a& h% ]5 S. {; X
setup-plots

6 ?* ^4 c8 \$ w1 y/ W/ u6 \
) m( G# v4 e. k: h1 Hdo-plots
. R) x# R2 B/ V+ M7 c
end
! `5 y8 Y1 J2 d2 y5 U7 j8 J0 @* _, _/ Z4 j% K$ S( S& w( }) T' C
to initialize-settings
* X$ i" p" f# R1 C2 ?: d* O. D0 t7 B6 c* M
set global-reputation-list []
( E7 m0 O8 F% E0 \  }
- m, J. A* h$ p& @
set credibility-list n-values people [0.5]

6 T3 o+ ?+ v  _3 s7 F
7 c  \" d) s* Iset honest-service 0

6 Y$ k# v: c- _- ]
9 f; S$ D" r- e+ f, |8 O: |- ]set unhonest-service 0

7 P8 G# d! C+ u) s; c* q8 t- p
% C; @  F0 f1 cset oscillation 0

  N* y+ X& S: [5 X. C3 G8 T, W0 E5 }
set rand-dynamic 0

7 n; ]8 T9 r* n$ Y8 jend# ^/ Y* v$ J) e( C

$ C6 m3 ^( @& lto setup-turtles
5 \5 {" p# _* K9 x: q$ [3 Aset shape "person"
  b5 {) i0 W! ^3 Csetxy random-xcor random-ycor
5 m% J0 @; }- f4 \set trade-record-one []$ ]9 @1 x  u! y

& m1 e- K, F. F$ R- wset trade-record-all n-values people [(list (? + 1) 0 0)] 2 d' r, Y* ]; l$ o

* s) N' U" G: s8 }set trade-record-current []; a& P1 \$ O: _- i$ w
set credibility-receive []+ }. c! a- Z. q; K: C5 i. `
set local-reputation 0.5% D6 m* v( \8 R# t' n, K4 m
set neighbor-total 0
& r0 l: h' j" O5 b' Sset trade-times-total 0
& s. M: E* a- J1 Vset trade-money-total 0
$ F6 e$ e  Y; \' @. F: c3 zset customer nobody
2 k4 m0 M9 E. x2 a& D8 ~+ ~set credibility-all n-values people [creat-credibility]# s6 i) z6 ~5 q& g% j, W2 Q8 O
set credibility n-values people [-1]
! Y7 w/ v0 l5 q$ T0 t! t# sget-color+ A: K7 \; }) Q  J
0 V3 ?2 t% `, h2 ^1 K3 M
end
; Y2 w& o  w# h5 ?; {
7 G+ R/ ~7 @. `/ t- c! ?6 Y* ?to-report creat-credibility- {  V, }+ p: n; \# N" \
report n-values people [0.5]3 x' D; v% @0 m6 J. x& c9 |' j
end
7 M5 q) {# J( [4 |
  [0 M! Q( `6 o$ p! A- H9 Fto setup-plots5 r$ ^' f5 \, P* Y4 x3 R# C0 m
7 ]. X0 L$ F) X$ Z4 A
set xmax 30

8 ]* s  h# V( D+ r* R4 J
. N5 W1 ~( d; s! c  B2 Y  w/ aset ymax 1.0
5 H3 ?# q1 }$ g! u; x( p. A8 _

' l& K7 q8 [. z/ @clear-all-plots
( |" \* D  H4 A3 A, M" y# g

: [' T" d' _9 a$ o$ ~6 }setup-plot1
$ f$ j  i% t/ _) D& B$ r) x! P
, }* ?4 e/ F7 h- M9 P
setup-plot2
  P) W  Y6 q, g

" L' ^- p/ M- N8 Ssetup-plot3

% N/ E4 E* `: yend: _7 r2 g2 {: T1 _) E( K

4 d- @# @! q& }+ v# X! B6 L8 v;;run time procedures
) \; w; f1 J% s! m% l" R0 F/ `- N( s: }) i
to go
8 q; y+ c: v! Q; }, R7 |4 E& Y0 W: p" ^+ P# O8 T. q0 P
ask turtles [do-business]
2 y) `; S0 `) \. N" |; {
end
1 x) `9 Q$ V% y4 X' t% F' |6 [5 Q/ a# b, x8 Q
to do-business ! G9 H) l5 c/ ]" g/ y* r" W

' @: N1 q" C% L* y. G. U# l& m
/ P" A- c6 f0 w6 b' Wrt random 360
5 H% i6 q# v) Y* O
1 }9 E) K% G0 B3 ?9 E4 B
fd 1
, f+ }. B* r& m! ?* |* R
0 a3 j8 J! [( i3 ^4 W
ifelse(other turtles-here != nobody)[
* E: K' z+ E" m

+ M) R* o) i3 S1 {0 Lset customer one-of other turtles-here

6 j# N$ E6 i1 V5 U; H* v. n. y) p/ u/ B8 ?" y4 |+ e& W
;; set [customer] of customer myself

) I% o3 ]; P1 g! N' g: D
1 X" d4 z; s, d4 S4 \% Wset [trade-record-one] of self item (([who] of customer) - 1)9 t) j6 `6 V3 z4 U
[trade-record-all]of self4 E; u$ e& l$ S
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  b( A8 u: ~& R, y" C% `, W

: ^/ ?# H4 p1 ]$ Lset [trade-record-one] of customer item (([who] of self) - 1)
: i, K! u% m* \8 r' T[trade-record-all]of customer
& J( V3 d7 k; j4 N# O

" Z: y3 r5 G9 dset [trade-record-one-len] of self length [trade-record-one] of self
  h, D6 Y! M8 f" R8 B; Y

+ @( k9 c+ D8 j; I: d( sset trade-record-current( list (timer) (random money-upper-limit))

5 e2 e. K1 ]# z
+ h2 u; Y3 A1 D. n9 bask self [do-trust]3 s& }- R4 B* D9 [6 _2 D0 F
;;
先求ij的信任度/ E: G0 i+ G) J( k& W" h9 y

/ O1 r5 [. K3 [if ([trust-ok] of self)
4 h* ]) c2 ?! s5 ^: F3 i;;
根据ij的信任度来决定是否与j进行交易[  E/ S; L* c  i: D( e! D
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) b5 ]$ w; {1 [' |( ~
/ L" u8 Q# N8 N" ?$ A& T[

/ s% X+ i$ R, z' z* h% ]' P6 T9 c# U( i  ?1 q
do-trade

% N( Z5 ~9 j: T7 a8 I& q- c9 B& x! z! S* P6 Q6 w" {9 o1 C
update-credibility-ijl

* L) q) K" M9 f
, j% T! {9 G  e4 V1 f  Dupdate-credibility-list
: }; W1 @5 M$ c0 X+ C9 a8 Q3 Z

+ \3 b$ h% D1 m; b6 G6 y8 ^9 n. B; p1 i+ c+ C- N! x5 I
update-global-reputation-list

5 {! ^( a* ?" p1 v% E% F4 x/ V, q
9 S( c6 g' b; z* f6 Qpoll-class

0 H3 k7 w8 P4 j, Y0 m/ a( G) E9 Q& c# P, t5 _9 z& ~# k' S
get-color

" @$ l* E! k/ C8 q% m$ ~4 {+ [: B% j9 K, t& a1 i
]]* `+ h$ f8 E+ z1 _1 j# a% _

- r$ f+ P3 o' c7 H7 ^;;
如果所得的信任度满足条件,则进行交易
( s9 |, o1 a' X
6 p8 G1 L: H9 x- D' p0 \" F0 m[
! M6 k) t* S7 o. K, W
* D! c# t; S; ~6 z4 v
rt random 360

+ `7 f. X8 q3 k6 }& L8 E8 f- ?  q8 L9 j7 A* E+ G4 c
fd 1

/ F/ i7 }+ B" K: R- a: x; h" S' g; ?+ ~3 }. J* o# p
]
* |9 R* f# g; W/ \  T, h! V

  H% \4 A( c5 |7 mend

0 `7 |- }* i, s+ y% s* v4 n
3 A, t; X, U) H8 F) H* |4 b. xto do-trust 9 x9 v8 t# s- ^! \: I
set trust-ok False
- U/ X! c6 d8 v4 w
7 L" d8 D; i0 v' s7 Q! w0 v

% Y. |" ~& z1 D% ulet max-trade-times 0" e# a2 a- y) d7 e  @
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' j# ?# L) W+ ^) V) flet max-trade-money 0$ {# Q: B$ w$ x4 L
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ a2 Y" a- b+ p5 R: a6 X, q
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% ?, n, Z' I2 n- d2 A) r# L$ n- |3 I5 }' ~

+ b. M. u1 R# b& i8 y! O6 {get-global-proportion
  L8 d$ T# `8 }let trust-value
4 N! V; y5 X- I# k2 e2 d4 _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)

9 V" U$ J2 B4 G, J1 Uif(trust-value > trade-trust-value). ?4 W& L! O& b9 q: s
[set trust-ok true]
3 m; P* c" h* bend. j9 D0 P9 F, f) F1 X/ C& u$ q

/ T) ^4 r3 T! D9 Sto get-global-proportion8 g: y7 Y# L# d8 D, j% s+ |% y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* R1 e6 ^  `* d4 |* k
[set global-proportion 0]/ a# a$ ^$ T- F) [& n8 `
[let i 0
4 F1 ?. n( }/ clet sum-money 0  ~9 k3 E0 w5 X) q- _
while[ i < people]$ O  B  s/ x+ B2 z' M* @8 W+ w
[
0 z4 ^5 ]9 V% Q1 }9 M" q6 a* Q2 ]5 Dif( length (item i7 Q/ d/ |9 X. r0 Z$ }4 w
[trade-record-all] of customer) > 3 )

9 @4 M+ {) U; C[
4 g( j! v+ c$ ?( q1 |+ iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ ^2 \; y, g! l3 f
]' T9 p* I9 O, K" S: ]
]& @" U. u9 g/ L7 e. [1 P. s& k  [4 x
let j 0
+ f: }6 p- G9 a; x- \- M+ Zlet note 0& n/ f& Y  k! V; L' }
while[ j < people]2 n$ z  Z! L* l/ o7 d  [/ z5 @
[
% V  F; E. Q1 P1 }, F1 pif( length (item i& H3 A/ E! U& ~, E( F7 }
[trade-record-all] of customer) > 3 )

! F* H# p2 f- {. X# f1 K) m0 B[% D/ U/ Z8 F! h$ \; V- d
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) ^# Y% c( X: W. t8 Y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 n% A. Y2 s2 m: p7 D4 b
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' f6 Y  {) [4 S8 X3 J" T
]
6 g) e( s0 E7 d! V# C& H7 s]4 b3 Q/ d6 ^3 |
set global-proportion note: D  t. Q5 R2 n
]
7 T1 s' S$ w) Kend
& W& U' ~9 t! X& X; Y1 N. I8 x. C* \+ F
to do-trade
+ r) c: A# j. u/ d;;
这个过程实际上是给双方作出评价的过程
* w/ }1 p3 I5 o5 g% ?% C6 G' Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( \0 K) n9 O" y& l: aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 ]5 l8 a, d" j; H8 V4 E5 \
set trade-record-current lput(timer) trade-record-current7 M  \( o; h6 j' c  W9 b
;;
评价时间
" S# A- n, c( @4 Bask myself [: _; d- S. m4 V2 g; W4 c$ e9 x# h0 a
update-local-reputation( B, Z5 n0 V2 P- ?
set trade-record-current lput([local-reputation] of myself) trade-record-current) G2 M. x' g* }( A: ]3 v+ y5 L; o4 `
]3 ^9 W  }; Q* f) l# G) u6 a
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. W4 t7 q& Q. A) R;;
将此次交易的记录加入到trade-record-one
6 F" g" ]9 Z6 U6 G" g* ^set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( z8 x; E3 b& I0 ]0 X* G* }let note (item 2 trade-record-current )
) s! L1 W+ p5 R* Y$ o7 B% }  ?3 Fset trade-record-current( z- u2 X8 l  j, R
(replace-item 2 trade-record-current (item 3 trade-record-current))

- h6 q9 @; w! n6 Dset trade-record-current
1 S! I8 ?1 K# f+ K(replace-item 3 trade-record-current note)
  q' J% W# Z6 V3 v
: i, U0 j5 z! d! A5 y2 `
2 {8 B  H) Q% R! `! l& L5 k, W" _
ask customer [
, o2 k5 Z2 ~2 O, h8 p$ U2 Dupdate-local-reputation
; R6 b! N% s3 \5 }set trade-record-current# L$ ?( V- e; P- r
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ E! n+ ]5 {  X* P, o) ~! Z( z) y* e]
* c% I2 J. g$ M, Y) d
: U' d5 ]! \( ~( C0 ^
2 L. D. N/ N9 L: Q7 z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( b$ ^6 a: f/ J/ U
3 s& d- p2 C* a. G. e
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): M) O' E4 k0 z0 Z5 t
;;
将此次交易的记录加入到customertrade-record-all. J' V' @3 J0 U: I2 e! i
end0 n+ X+ p4 ~; J& j% q* I

  J9 A2 V9 T+ oto update-local-reputation
5 q7 j: j' R* o; ?! mset [trade-record-one-len] of myself length [trade-record-one] of myself
+ l6 P$ z# H. V, g  |1 y% b1 W: M6 W- l

/ [: H3 l+ P  x1 u% v;;if [trade-record-one-len] of myself > 3

& K. V8 A8 P0 L. Tupdate-neighbor-total1 R9 d% W2 G: T! H: R; U; v( t) q& f
;;
更新邻居节点的数目,在此进行  ~4 e+ ^; F: X- I1 s
let i 3' k8 [* [6 v' H& N: j6 c; E
let sum-time 01 [. N7 o: w! k. c: R" i- T2 M( l; b
while[i < [trade-record-one-len] of myself]/ m% j  J* x8 C3 x8 d6 b
[
; y* B& f. L% j: @% pset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' T' P. l* E, ~3 `
set i  T) r. n2 D* f: g3 V6 M0 g
( i + 1)

1 e% ]6 R9 F# f# w- U- c]" n: I! d; ?- e: Q/ l& [
let j 3
, a$ S5 s  D) ^9 U7 u7 y! Slet sum-money 0
( E3 E" H! F! y1 z$ ~while[j < [trade-record-one-len] of myself]
9 Q, Q) B  V- g" E; x6 B* G[# d  F6 O0 O6 h; Y# x( _
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)# [) J* }8 b, W' X. |  ?5 L: e
set j5 j0 o- N8 k3 N0 w
( j + 1)
+ S8 _0 H/ a+ M3 L6 e9 k: z
]
/ J# P  N7 n0 W, olet k 3
* L3 p1 J2 `7 p5 i0 {let power 08 i4 U- X) L2 E2 t- ^2 T
let local 06 W; v) q2 l- Q6 `: x% M
while [k <[trade-record-one-len] of myself]
3 t, d+ {3 W; ~4 _/ [9 W[% D1 a: @6 l/ V, u9 }
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)
$ u! [5 D$ L$ u4 O: f) X- _set k (k + 1)' f/ b( D$ Y2 t3 z& B
]9 h# ^( o8 r8 {5 x) b
set [local-reputation] of myself (local)* p, {0 _; h" ?3 f, `7 @. |- q! d
end
# z, |% y" c* L
  w0 U* S+ B) h$ R: z& Y$ A: bto update-neighbor-total
, k( ?3 L9 A, N" q5 m- I  f9 U/ m6 H. _, R9 ~
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, z/ ?, l. T2 P% }( I( d2 ^7 M. T6 u3 C  s: y
$ }+ I: _: s, q5 V2 d
end0 E% l' Z0 G; V1 V: Z" ]

% U: d+ v! f% U. k/ F7 n! hto update-credibility-ijl
2 s7 L; L2 I0 M( Q- J
8 C) U8 R3 S6 f$ x;;
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。$ Y9 V$ e$ x. |9 a0 Y. C1 S
let l 0- N, j3 u5 f; h( @
while[ l < people ]! i! Q( v/ v; \  ^9 e% \. {
;;
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4 n) E: Y/ G' r
[9 s# y) s& U7 \/ s2 I# V8 K  P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. c& W! S- s. g$ Cif (trade-record-one-j-l-len > 3)/ k5 o* G& r- ?- e0 B7 _
[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
1 y) T6 d% E: wlet i 3: G1 ~9 W$ L# c
let sum-time 0
3 s- m1 \  P( R+ d* k( cwhile[i < trade-record-one-len]7 Y* N5 ^: M  [+ M1 p& s
[# e  S% p# q& B/ m; l
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ X! r: Z  T. }: v5 h* \8 }0 Q/ i
set i
+ [, Q; o  a- w0 y9 Z/ T& A( i + 1)
  L! n7 \, ~5 ?# H0 A( m
]- V/ l0 p2 w0 d0 d# h
let credibility-i-j-l 0
. g8 w: W% M2 G! U! k; x, r$ A# D;;i
评价(jjl的评价)& k0 A) R6 k$ H, S$ C- T* \
let j 3$ i/ t9 I6 e5 X6 W  N$ M, ]# }
let k 47 d& t4 V; O. X; S( d
while[j < trade-record-one-len]  D' J5 r  I: \, q1 K/ O  X% u+ R% X
[
$ y4 [# s9 ~% y/ M/ n$ [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
; Z, O' `5 K+ h- `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)
+ \' r* H4 f/ B$ B3 u. Z. Z0 Gset j) l* z- r* q' A* K
( j + 1)

2 h9 X: N) F% Q]5 _+ |5 I% ~5 e+ }, S' L. p# 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 )); C4 l" e" h. B3 I" J; [1 P5 y

7 w+ s, H+ k* r- r
, S5 I5 p2 t+ ^, Q8 J) i
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. U  B1 |* h8 j7 N4 E;;
及时更新il的评价质量的评价
4 J1 m3 J2 N1 o9 |1 W: N; G: Q* rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. R2 f$ G) n; e9 gset l (l + 1)
% f8 j. M! E  y; K9 q3 ^# y]4 ^0 O6 u7 {" l/ l; m% ^
end; ]: a  |+ g3 G: A  X4 \
) Z. o, l9 I; d' P/ Z# `% @- g
to update-credibility-list+ S5 N! @) T3 {- \
let i 0
* J8 ]) J" z0 U7 c! `$ c  `while[i < people]* Y0 b+ {2 g& p1 l& ?
[' E% j% ]: `* I, }# f5 K  v1 n
let j 04 r2 i& a3 W4 f: l
let note 0- ~  c: r* Q. e6 B- u$ |/ ?
let k 02 c4 V5 F0 U) E0 q+ U
;;
计作出过评价的邻居节点的数目$ O( V3 Y" S# Z. h
while[j < people]
9 c5 I/ x5 J" X* c8 Q[
6 {3 ]( M% C! u- Vif (item j( [credibility] of turtle (i + 1)) != -1)
3 `$ r0 d8 s7 z3 z$ l9 D;;
判断是否给本turtle的评价质量做出过评价的节点2 ?# h/ i+ j5 C$ e0 ]3 Q' M! ?
[set note (note + item j ([credibility]of turtle (i + 1)))7 M! d) V. [, u
;;*(exp (-(people - 2)))/(people - 2))]
4 |% @! [- X$ I
set k (k + 1)7 I0 i' T! E( ^+ x
]
8 v6 F9 M5 M0 L" G/ Gset j (j + 1)2 I/ O4 W3 x& @: _6 @. d9 W$ r% ]
]
- `- s& g+ J8 b: R- J/ Y" xset note (note *(exp (- (1 / k)))/ k)% h1 q" G# j; Q
set credibility-list (replace-item i credibility-list note)
$ K: g2 ?7 P5 b/ j. d2 Y! Gset i (i + 1)) s6 X) O% V6 S$ z8 n0 ~0 E3 }  F+ Y
]& t( @* @& t- n2 H" ?
end$ h! ^6 g/ y& E- W! P
+ o4 r, o1 _5 M. W2 Q6 p! i" n
to update-global-reputation-list3 B( j7 S: q4 o- Q
let j 0
; u# y9 z9 @9 z+ p$ S2 owhile[j < people]
( D0 K$ N- {0 d0 Q[) L  Z- _$ C8 X/ ~* ~
let new 0
, L) c# ~, N% _+ E5 W. p; \' F;;
暂存新的一个全局声誉
6 u# \; }4 ]4 S; q/ Ilet i 0
  D5 `. Z; f/ `- s( h+ tlet sum-money 0
/ B  U7 q- Z$ V( p4 ]1 s# e6 g% rlet credibility-money 0
- N5 ~& J% F. F( L8 T' ?) b9 Hwhile [i < people]
& s1 |" E& v9 P: F[! G" A0 Y; b8 y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& ~* O) n& P  sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% C3 [  B/ P* f* {* P4 p: Zset i (i + 1)+ Y) L9 z0 n0 c$ p/ q3 _
]( _- ~8 H- @- g7 I- w7 M
let k 0& X6 w+ n) K, g! }
let new1 0
; x9 M* m8 P1 m& n) Z" U2 x' q/ j- Jwhile [k < people], E1 n' ?. ]$ o: A
[
0 Z  {" A5 u6 D4 m8 g2 S  W/ cset 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 y1 |  F  }# x; |# h9 Bset k (k + 1)) s7 I6 A8 ~+ h2 W; f* v
]
7 P6 ~) ~: b% w* fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 \; L+ f4 W1 `6 Y) |
set global-reputation-list (replace-item j global-reputation-list new)
1 t& i3 D: f! r. b7 g9 pset j (j + 1)
' F* y. k1 A/ D+ F( Y8 C$ ?) l]
, S3 Z9 x0 J) V3 j" W, k( P1 X, nend
/ s$ L+ h" G( _4 R# h! N! A9 b0 Y, e" I  i" o( g/ |. ~6 k' G( ^

" `5 ^4 ?8 \+ T; u( b. G# N: I% z+ S2 A+ S. W$ W$ S  [8 x; W* x
to get-color) M, x9 X1 [' o& C$ I2 ^! r- C
0 X3 l, B+ Z. E& P$ O+ Q; j9 f
set color blue

. S( a- c- W: rend  f$ d; Y2 A+ I. G: X. ~4 O
, H' f8 a: q6 e  r( E" y5 a% H
to poll-class$ W- I. h+ w3 {! _. Q6 f; F
end$ j) P& [5 v9 Y1 m# V
# `7 A8 Y5 I) [5 B
to setup-plot1
" O: m2 |% J/ ?* X( F% o1 l+ ]$ C4 P+ _* l+ @* a4 U4 r
set-current-plot "Trends-of-Local-reputation"

8 S* n4 O* ~' v) B4 C4 S* m
/ s+ ~  H7 k& p7 S) D9 P2 C1 b% j) vset-plot-x-range 0 xmax
. N6 M" `# o. C2 ~  k; m
/ e) I3 X1 r7 l& N! W7 L
set-plot-y-range 0.0 ymax

# f- i% e, p4 Q/ D/ Y5 oend  D/ O5 |7 C4 d+ X. b9 m

9 _; [! R* z6 uto setup-plot2
% l) `: L! n% w. F3 h2 J& z
) V9 ^) M/ m) J# P7 e" |' Eset-current-plot "Trends-of-global-reputation"
/ N7 V* x; g2 U6 `# u

9 k8 [5 t/ n; O" l# g% ]set-plot-x-range 0 xmax

. B, X, Y; m: _  r
" A  T7 K, r& l4 Tset-plot-y-range 0.0 ymax
( ?* g- Z5 `8 U  Y! U
end) N  t- f% X% K$ S

, b$ @, i/ c5 x* A' K! ito setup-plot3- @8 ]: _8 m* A7 {5 j

3 L! |2 g" S# x- a2 {( ?# q, I: iset-current-plot "Trends-of-credibility"

7 S& T/ R; a) f% M6 M+ y, g5 l2 S7 f) q+ @7 a& d. _" X
set-plot-x-range 0 xmax
: y: m0 W- X# F0 @

+ M5 X2 i: x, l- m' z* G8 H& Eset-plot-y-range 0.0 ymax

- m( L  y5 y2 M* H# A4 p4 r9 fend
. C5 I% ^; A' m5 y- d# S/ [+ t; j- b& A6 q
to do-plots
% V' z3 f( Y7 g  C9 X3 Jset-current-plot "Trends-of-Local-reputation"- b  c( D* N. J8 ~) u, \- A
set-current-plot-pen "Honest service"" C1 m" w4 |$ z; y! r( ~9 \* Z
end, p" v! E4 _3 x, t7 A, e

4 E* ~/ G1 n3 K' ^9 H- @4 r6 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.( R9 c1 B8 D: g
+ \6 o+ f# F. 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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