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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:
# e( P% N2 V$ n5 U- F! V$ L- [to do-business ( i8 M% j- w2 w; W- b: ~
rt random 360
, D$ a" d& F* d: d1 h' A fd 1+ p% j3 o& L( c2 ?0 h
ifelse(other turtles-here != nobody)[6 v/ P4 v; _4 h6 a) v# T1 v1 w
   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.1 M" d; P& z- L  _- R5 k
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) I, Q+ r2 y. `
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 ~) }) X% o: c- X% r+ r4 L% i   set [trade-record-one-len] of self length [trade-record-one] of self  i- Z6 _) U* n) ?/ p2 q
   set trade-record-current( list (timer) (random money-upper-limit)), ?8 p2 f1 @' W: B& R3 q6 p$ u/ }
6 Y9 C7 l$ y8 v0 i) I# i5 R, c# U; \$ G
问题的提示如下:( S9 p! i# c4 h2 r

: u+ s, ?; `( c' O6 Kerror while turtle 50 running OF in procedure DO-BUSINESS
* F- d+ J4 R; B( b  called by procedure GO
# Q5 r9 Q! _! |3 [OF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ e6 G8 h* H4 g/ Z; s8 I7 e
(halted running of go)
$ ~6 ~9 e2 k% j: v
) j6 v0 X  U6 g/ 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~~* A$ o3 z" m3 w3 l# M1 p6 s
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9 L, ?* r- t) y. P" E
globals[  Y0 U1 q" d$ S$ i/ F( s7 V) R
xmax
' l$ M9 o; i  s& D5 R" N# {  [9 Xymax& |8 k' d5 V3 Y8 a
global-reputation-list# S# U2 F' e0 |! I' g2 W* H+ H  ~7 W( w

! q! ]1 K  v! Y9 W9 y$ S;;
每一个turtle的全局声誉都存在此LIST
5 |& R& \. u. S7 s& fcredibility-list
# L$ d# t+ N4 ~;;
每一个turtle的评价可信度
$ o% n4 g$ g* i2 s5 khonest-service4 s) b2 n( L) J3 n) b! S
unhonest-service
% n) l. b* W1 N$ C( Y. k2 A4 k4 _- Aoscillation: R/ h6 Y8 I: l3 i
rand-dynamic
& M  R& I& |6 n+ h]" ~: `! q- j, U* M, R8 n8 |6 I0 s
# h& y/ _, |! f. F- F/ J- Y
turtles-own[. L$ ~# F7 B3 ^, X& b9 B% B
trade-record-all
# {. {# y* U) @! e+ x;;a list of lists,
trade-record-one组成
2 M& y0 g/ [2 {* l* ?6 v3 w" Qtrade-record-one0 e* g8 W0 k4 e: V' ]# q
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% {+ a1 [+ S% v, N- p' m( L

+ r/ g- @7 ]. ];;[
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]]: l- D& o! y. @, O
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]
# U. e( M  A% ]: R: |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; `: ?. N$ ?0 l2 i( f
neighbor-total
( @' _1 E  W. q. x2 h& g& [;;
记录该turtle的邻居节点的数目9 G9 r  Q) f! Z
trade-time
+ Q4 c" _, S* F( e, v2 H;;
当前发生交易的turtle的交易时间% L. }+ a9 a8 O8 }8 [  i
appraise-give4 I, Y/ j& _6 M$ b( v
;;
当前发生交易时给出的评价5 ]# m6 a7 K; M0 k, G- y! [9 V" A% _
appraise-receive
3 q$ h' J; q; O3 [0 A  C4 g- W;;
当前发生交易时收到的评价  s2 |/ e" k+ g$ [# T3 w* T+ Q) T6 Y
appraise-time
3 C; R5 D( r; o" D7 g# I' N  @! y;;
当前发生交易时的评价时间0 a# p4 R- X5 \; K6 i9 O+ Q  Y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉2 ?: B2 c' [; \$ z% p
trade-times-total
- W- u: D8 \2 Y' V' z0 x. ^; i;;
与当前turtle的交易总次数7 \8 F* k  [0 p' i
trade-money-total
9 g8 N# L9 P7 u. B" l/ F;;
与当前turtle的交易总金额
' v& o/ |  D3 L( b* flocal-reputation1 Z# k5 ~! |; u/ ^
global-reputation
- [" m; g  b* d  Rcredibility
: T8 X( H0 L) F+ C5 P;;
评价可信度,每次交易后都需要更新
/ N0 `8 k# X0 M0 W  y$ Ncredibility-all
8 t5 {* B2 A1 w! ]) g4 W' k;;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$ t5 V% A6 `5 Y+ [% ^
4 b( X4 B$ l/ p0 d3 k/ L
;;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
! t% C6 R1 X: ^8 s* M! @6 lcredibility-one6 S7 O6 E; I4 t- }
;;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: K$ d+ U7 R: o0 T- t& g  H7 r
global-proportion
, w; R2 V- Y/ n5 F* h" V9 _; ~customer' z) I6 \3 L) j& {* I
customer-no
( d* K2 w* M3 _. {7 mtrust-ok& Y0 U3 ?6 Y2 x" `2 a
trade-record-one-len;;trade-record-one的长度  l! @& ~& t$ g0 u
]. l  b5 o; F: P0 P( U
) L+ y5 v: N- ^6 x2 u8 |6 t) v/ h
;;setup procedure
" y& \- k* `% t& R
$ c! i! s, s/ {# S3 E3 qto setup, o1 L: h! m/ g5 _/ F5 e- y5 |
& ~4 f$ C1 r5 n1 e! u% L3 v8 a
ca

8 v$ C) W: m% \1 C9 S
- F* F: a& ]5 w# M3 Minitialize-settings
3 R1 k# `& I7 R8 T  ^

. c4 H! C& }6 {/ o% X0 jcrt people [setup-turtles]

; f: H- H* m9 }3 A
, H+ Z7 z+ c4 B- O3 V% Mreset-timer

% h. l0 v+ r8 Z; S9 ]2 O+ i/ a( c- u6 r' T
poll-class

% m  r' h! q7 O* ?! g7 T6 V$ \4 [
/ U( R, ~) H+ ?; ^setup-plots

9 }7 `2 _7 j% l: H! p( t
6 i  T3 Y$ Y  ydo-plots
- W$ x' l2 W3 w9 D* `5 X
end
' m% r" ~* A2 y! _/ |) ?2 R6 ^% J2 {
to initialize-settings
9 Z2 h7 R8 c& z5 z( {5 u' r2 U
! P" N! _) Q* J& i, Kset global-reputation-list []
4 t- o: c, {! `" M8 n
# _9 B+ c; E9 u$ |$ M7 R
set credibility-list n-values people [0.5]

" H6 u% o3 w) f) Z9 i
$ D# L) p% e5 {' yset honest-service 0

" ?) E, i3 c* H6 P& @4 B' l0 c& ~. e3 M
set unhonest-service 0
1 [! J* ?3 c: d% C6 ^4 P# o, n

; S9 l4 I& d/ A1 N# H, T0 Bset oscillation 0

5 l& ^( P3 w8 R$ `8 d
6 }9 z8 L( t& U8 }: l7 dset rand-dynamic 0

% f3 _. U% f+ gend
/ Q6 b- M- q& @, `) E( E! ]) L  c; Z- i. A+ Y
to setup-turtles
/ R, B1 A3 r7 h" O( gset shape "person"
, }) }7 V& d+ l) K- X5 D$ ?5 ^) \& Ysetxy random-xcor random-ycor' J. W  c2 i0 H! l8 a9 v
set trade-record-one []
) F) n8 [6 e) G/ u1 z
4 G) b& `/ g6 p& n% j4 p/ ^
set trade-record-all n-values people [(list (? + 1) 0 0)] ( A9 v, T" O6 I7 C: w; J! `! T( v$ a
; ~5 R5 A# D. v$ H
set trade-record-current []
- E! J+ y+ F$ o5 J& @- Mset credibility-receive []8 q+ G9 }, Q- L8 T0 {, U
set local-reputation 0.5) \3 p" w% M2 n0 n
set neighbor-total 0" @9 }8 O. j- {
set trade-times-total 0
+ W" C6 E) x1 H/ R. R' s5 i' v8 {set trade-money-total 0! b$ [+ d; X' g0 U0 x& F& u6 V  t8 f
set customer nobody6 C0 W) ?0 y0 G/ y! O
set credibility-all n-values people [creat-credibility]
" A+ i7 C6 c& ?% c+ q( fset credibility n-values people [-1]
9 @/ j2 m) o. Uget-color4 N: X  T5 D7 s; ?/ c3 O+ x; X3 Z
8 D2 Y- y. r3 W$ L; @  _
end# ]  J. c- C+ h( x7 r
$ g- N( ~! a* X: w: W" n
to-report creat-credibility
  H+ n; q* q1 ?report n-values people [0.5]
: {# m5 u# Y+ U' g* aend
3 c( a  x3 I  v4 t: a; g
0 J' b# D9 O7 U- wto setup-plots
9 |4 p" C  R/ A4 f3 K, E) {* {2 z. M& g" m2 X
set xmax 30

5 M0 D* G. f0 j- _
; z: r6 _; c4 J4 p  n/ x2 }set ymax 1.0
4 Q) T% d  i8 O2 q( s! ]  J
& r# ]; |( f& i1 u6 ?9 `" N7 O
clear-all-plots

- A; j" o$ a' ~7 }
8 ]" X/ y7 X* d* t0 @setup-plot1
) _3 U- Q; E( R2 c- }, u8 u0 _

7 o$ k( Q: Q+ \) _! ]7 |3 Y) r7 Rsetup-plot2
/ D( ~, p  q! b7 |
$ X, H( U* s: P+ f9 t; S; E* O, Z1 i
setup-plot3

$ t- X' c4 z+ J2 L- eend
( O5 B3 [+ {! c  b7 f9 B
9 Z! Y6 S) V' r3 a" S, E6 u: b;;run time procedures
4 M1 L: q% F$ `6 q' K! y, i2 e
# H- F% F$ a! tto go
" q6 _7 }6 j1 @# M2 o. k" T* i* j4 E- y7 O0 Q$ ]& n6 y
ask turtles [do-business]
0 ~6 i1 G8 s& ]) o( X' y# c! u3 a$ j
end
/ ~* P4 z2 @: F6 N9 y' k/ k0 m6 s) U6 _2 C9 U- f0 N
to do-business
, m) s! n( C9 F  `3 Z# r

+ O7 `5 ]8 Q/ ~% a. }& y
) _* ^! `  k& i) I7 }5 mrt random 360

2 \/ t+ _% X" x. m! |$ O  U& U5 k4 V% ?% m1 b
fd 1
) p7 h) L! m& _! I

$ x. t, U; p$ ?. K1 W; c: ?ifelse(other turtles-here != nobody)[

& [7 u2 S) F: X
! q1 c2 S3 u. |% Y- ]  `set customer one-of other turtles-here
& @. z- w: N- W' p  K
, z$ G9 q8 X2 e: G
;; set [customer] of customer myself
( K1 b) W( l  u. D3 T; @; I8 d

1 m, b2 ~' X- b# Eset [trade-record-one] of self item (([who] of customer) - 1)' @& Z7 @0 _4 x" E9 E, b4 l
[trade-record-all]of self
7 M* i( p/ q5 g;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) m/ `4 J& t( I! P
) X- z  |/ |$ a' y' k* o4 x
set [trade-record-one] of customer item (([who] of self) - 1)! q# t$ s8 d/ b1 o
[trade-record-all]of customer

* ?! s# r* H2 a/ X0 A- _2 x" n$ Q3 _9 |0 S: X9 V
set [trade-record-one-len] of self length [trade-record-one] of self

5 \$ E! n& O! A; x* s# V& l8 U8 p' n: {1 D
set trade-record-current( list (timer) (random money-upper-limit))
4 p% [, c! q, _5 J

7 {) I( F  Q: G* M6 j2 Qask self [do-trust]; B0 m! s8 z* |7 w- Z, \! ~* X
;;
先求ij的信任度% y( m+ _; Y* L' W% Y! r9 N1 J
2 V; Z0 d1 W4 a6 R0 k/ G) i
if ([trust-ok] of self)3 S8 ~5 s! b) d4 H
;;
根据ij的信任度来决定是否与j进行交易[5 k5 c/ J, X. O; ]
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" q' ^8 W( I* s3 z  k
; {) Y+ ~" E- h, x[

& Y8 @: E8 a6 {$ y- U1 g
. v$ r, C3 m; @6 i( Zdo-trade
, @6 n5 u& v5 U0 \

$ K# i5 o. x# l: `: Wupdate-credibility-ijl
6 A- \' X- y1 U% {" n1 p
3 G8 f9 R! H9 I/ }/ ~, z
update-credibility-list1 B1 i0 y3 v* N
) H" \8 o& c5 |

) V$ R( Y$ L  ]update-global-reputation-list

9 \3 u% X. M# Z$ m0 }8 n1 [# Q/ |: L- [! y
poll-class

( {9 o9 g3 k6 @, \* h6 }4 y6 ~+ S4 g) w2 R9 _- ^( ]
get-color
' ~2 d' ]8 F8 D$ N. x2 D
/ R" c- \' S2 @0 q7 [
]]; }5 \# Y) i9 N4 X+ I/ |* }7 Q, U8 A

9 o; w4 f6 e% j2 f;;
如果所得的信任度满足条件,则进行交易
$ K7 a/ K2 B6 y, C( e2 w& ~# S9 Z7 t$ b/ t* k* W; ~/ m8 y
[
: g5 T& I# d% @! }5 w, d5 n& r' t

/ W$ ^  M% Y% [rt random 360

* i: G7 }8 ~  i, L
) y6 v1 o, j( }  e, m9 M+ r, _" |fd 1
( V3 X/ f, Y/ Y- c6 ]/ Q2 R, O
2 l: n! P3 q* |7 \0 W, I; W
]
2 f5 e6 x+ j% S5 l" R3 z
- S$ f( m3 X2 J+ A7 m2 ^
end
  V" x! E( |2 F$ H

/ N" b5 K7 [: t- }0 ato do-trust   u6 F4 x+ v# x. x
set trust-ok False
; M. c6 ]3 f; d  s
' x# Y1 \3 u% [7 G3 t5 f$ \& k
+ P6 z! {% G* k8 {
let max-trade-times 0# C8 a( Y" z; s/ w$ l+ \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]+ N; u- c3 ?# t
let max-trade-money 0
& [2 H3 ]4 k6 O5 M5 Iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% P. |0 \, C: |/ b9 ]; f* Alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
4 H- w4 y2 L7 x# ?- M+ E; G& X. ?
, W$ [. P1 _& C, N- E" g) g
* m) A! m3 P( o( m9 v# t8 Y
get-global-proportion
  D) _8 y/ f7 dlet trust-value3 w2 i1 P/ j" w# R
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)

8 j( A; Y3 K; c$ Y0 Bif(trust-value > trade-trust-value)
( h  {1 N6 J$ w- k1 M* ~[set trust-ok true]
6 @4 A2 l% E0 c& wend$ A1 N; X. B  T( P. A1 K  |" C3 W
" ?" V" Z( d8 S
to get-global-proportion
1 t9 Z4 [0 y2 k; i9 U5 |8 b  aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% D8 e0 f- M" x% Z7 o% q7 Y[set global-proportion 0]
, g& P; J3 g- L* J[let i 0; h; p7 L4 L6 b+ ~  I! r. m( F' G
let sum-money 0' n5 v, R5 D- A7 K
while[ i < people]
; h  }1 |! ]+ Z3 F9 U# w[7 H  @) R' f! x5 H1 A
if( length (item i
( L6 z4 n; ]* x  p[trade-record-all] of customer) > 3 )

, E' n/ R8 L9 x' M# W2 h" x[
1 `+ o& l! d" Qset sum-money (sum-money + item 2(item i [trade-record-all] of myself))! t8 O8 b2 I$ R: ^4 Q4 Y* @
]  g& ^" @$ }! Y3 s
]( R$ w/ ]6 E6 T. L' A# W  r6 i) u
let j 0
! A3 `, R+ q4 ]/ I6 h  alet note 09 A. [. F: i7 M7 h
while[ j < people]
5 h2 A! K) E8 {- k: w8 u# I[
) O2 h2 P2 f/ D& ~if( length (item i' o) ^& `7 x) {- B& o5 R
[trade-record-all] of customer) > 3 )
! W: Y/ ?  P/ ]" X- y
[; U8 a0 G' q0 w1 {8 ^6 m3 w2 g& L' {
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ y4 E6 M6 d: D  I[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( f. @9 f% A9 z; b. F" J% g% m
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- x  u" c* J8 [
]
/ E8 O3 _/ S, E/ c/ M, i1 A]4 C; r( o3 e* C6 ^- t5 a# G! N3 E2 a
set global-proportion note+ u+ R! g2 o2 m3 O
]+ }! S. }" y9 q1 x0 u8 e
end
! U" }6 b; b4 t; R7 s0 `! L" |  q7 F5 m# r
to do-trade
" \, o9 X4 n; T- Q;;
这个过程实际上是给双方作出评价的过程* c7 ~9 T# i# B6 R( W6 R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- {9 m  q7 ~0 b0 v* U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 x( d; ?, w0 Gset trade-record-current lput(timer) trade-record-current
2 U/ N) J! U6 K, h( T( B;;
评价时间& ~7 e% x+ }, z" i2 ?2 t
ask myself [
0 P7 y2 x6 R$ ]  t; Q& ^- xupdate-local-reputation
+ u2 O3 \0 ?2 ?$ j0 B3 d8 }set trade-record-current lput([local-reputation] of myself) trade-record-current
# e) w  C5 H' A* @4 ~]
5 l# s4 \' ~; x1 T4 P+ k4 Lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; k% N* y, I( }0 a1 Z
;;
将此次交易的记录加入到trade-record-one3 p; c& x7 G& T, |2 ~
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: N1 S7 M5 h* B3 \4 ?+ J  q! b9 s9 hlet note (item 2 trade-record-current )
; }* F8 y3 k4 Eset trade-record-current5 f7 y5 R! j/ P" B  J! ~
(replace-item 2 trade-record-current (item 3 trade-record-current))
" b5 ~/ L6 k. X, b
set trade-record-current
# L/ _( k5 Y# p6 r; `0 r+ l(replace-item 3 trade-record-current note)) `% L$ s% v/ n+ \2 g& f

- H1 s1 k6 O* k. F

/ z6 |1 C! Z8 C+ K: {ask customer [5 t. S" V+ V* I2 z
update-local-reputation+ B- }' }9 A: `6 I2 e9 a
set trade-record-current- s7 m0 p$ K1 ~1 I1 Y, B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 `9 z9 Q* g' M9 x$ g7 ?5 z% Y8 V
]
. v2 v9 R6 V% J% g" R
7 a0 \" m  L; g( R' N& }9 g- u; I4 M
: k1 l: i( C- k' D1 O3 z$ G3 e
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% Y! v, P  |& w; \2 c' M! R: v
9 J( S8 @5 `4 G9 _: D' `& X6 z- P
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( b" G3 a: p3 X! b3 s& Z3 j# E;;
将此次交易的记录加入到customertrade-record-all
* f5 I) x! z' x7 V3 U5 y& Cend2 }. k  Z; e" s% V* P

8 F+ y! |  X& f7 h" |to update-local-reputation& n; m4 K, a# f, E: G' y2 p
set [trade-record-one-len] of myself length [trade-record-one] of myself6 c0 b& i. |8 \+ _6 W0 x( ]- e7 P5 S
, t5 [7 e7 {& K3 }, o5 Q) i

6 g  V8 M. u7 h5 j;;if [trade-record-one-len] of myself > 3

8 @2 ~( l6 ~0 z9 }' lupdate-neighbor-total
" S6 N( q: _" A! k$ u2 n2 s* `;;
更新邻居节点的数目,在此进行
3 @# C. Q& @. u2 E" g  Dlet i 3) N0 v8 m( @3 y" Y8 a1 X8 O
let sum-time 07 B6 z8 T- h, \3 p
while[i < [trade-record-one-len] of myself]
& G3 t8 e( I5 V$ E[
0 M9 w  c4 p2 W" o/ l" ?set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 O8 a) z8 ]0 f/ q
set i7 |8 E- x2 j6 C9 h2 v- L1 H* g, _
( i + 1)
9 Q3 e5 `* A% W) X- c6 l
]  D9 Z. V2 m' l2 Q* E7 x* f8 w
let j 3
+ P/ G' i0 ^7 ilet sum-money 0
+ Q, D. h1 q" p$ \) S( qwhile[j < [trade-record-one-len] of myself]
' G/ Y1 S$ p% A: J5 a7 r/ ~[
0 P- k3 W# G  \/ F; k! W6 cset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
# `- T- U% S, ?/ V: Y) j% ], {/ e2 @set j
- u3 a* K" Z: ?' \% _2 h6 C( j + 1)

" \* _/ A  d, n' v* ~" ]]& ~; G5 g) q4 Q! d2 l9 G
let k 3: a' o. j: z# I& s' A6 C: g7 W
let power 0. r* `  M% n/ @3 H- e
let local 0
$ _4 l% U2 H! ]9 d' D  r. h1 K/ mwhile [k <[trade-record-one-len] of myself]7 O6 {+ |7 C( L0 c6 [
[9 O3 c* [" ~6 L# j: [6 \0 V, d
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) & h  q% z* D$ b& k* L6 }; Q# h6 H/ j
set k (k + 1)
& u1 Z, l8 \! f& ^" W# |/ z( i]
# L) O$ Q6 @, j: o! Bset [local-reputation] of myself (local)
: {% w. h7 }1 oend
; l; O4 z. O# J6 D. G# M! u( P) M5 u+ |5 B
to update-neighbor-total5 f: \; N' M3 Z( A2 x
4 Q& `$ C! F' M* S1 G* U7 o; u. O
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& [- b9 ~. r  G/ o
- @0 [+ f# m6 u# M

8 G# M( X7 B  }8 N( @end( ]4 X8 o6 J/ E" _; O) P2 k

. L$ X% y0 u7 G9 U& Xto update-credibility-ijl 7 H- s7 ^* [6 m% q! R) ~; \' A( e
8 Y3 j5 u( ]- q* I( q- K
;;
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。0 I6 W9 P3 s+ M7 \( Z% a
let l 0
6 f9 a/ e9 q. S4 ]. L  U9 _while[ l < people ]
, i& T" K* g7 @0 i6 X$ O( f;;
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, h. C* s# Q5 j
[
, Z7 z) m2 Z4 xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ Q( b' q5 w$ b: q2 rif (trade-record-one-j-l-len > 3)
0 I0 i9 B) [8 {[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) D& j4 o) L- V2 T, [, \5 F; l* I
let i 3
  c( b, p* o( P2 M! ?2 b* U* Ulet sum-time 0- O; R( `, T5 D9 D# `: w
while[i < trade-record-one-len]) s+ T" S& @$ @. _
[
9 C- _' g8 u" E! A! q7 p/ Y1 N  {set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 ?: s+ M# ^. b. D" Q
set i
" W1 }0 q& N2 E# Y( i + 1)

; z* v/ _% l" R, F, o]
, m8 J, ^$ A$ Blet credibility-i-j-l 0
. J7 ]" O4 _. S;;i
评价(jjl的评价)
* |2 e. ~& p; O" u' Mlet j 3
2 c; B3 g) T' W7 S/ E# {. ~let k 4+ V- T, y) ^2 v: p/ H- l0 F
while[j < trade-record-one-len]
# |- m9 k$ X/ E[- @2 A. P  S- L6 ~+ a
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
1 W* r  n- G8 _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)
* q7 g$ P3 b+ U, U, _, Zset j
. w5 F$ V( O1 r( u( j + 1)
) P% l* J: M' M, n& m
]# H/ x  P8 T% `8 T" D- _+ J5 _
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 ))/ J# {, g# J- Z; H3 H
" D$ n# V6 _! l/ c$ r
6 o& ^% r0 B8 C% O; \
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 o( e8 k2 r5 o/ l8 D
;;
及时更新il的评价质量的评价+ K6 x' {! T2 S; D% ]4 j
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 a- [" k9 ^* z" X: R3 O2 Y
set l (l + 1)' H* i9 r" h( S
]! M" d1 o. J' m( }# W
end; S( j% m1 n2 m7 r
# R* L6 @* Q2 P5 `5 l
to update-credibility-list" O/ _; b  ]) ^
let i 05 Z) ^  K/ y- C0 A( A& F
while[i < people]( K* d& s- V  z8 h, S6 b
[
( ~* ?( \! X4 Q7 R" Flet j 0% ^% F7 H8 s% e4 U
let note 03 Y: o1 X( Y' I) i
let k 0
6 K; r# l# T$ y5 [( H;;
计作出过评价的邻居节点的数目- Q5 J9 j& G& H) }) O* ]* T9 P
while[j < people]
' ]( B- T# l( ]4 x: C[
5 x; w" Y. h/ g% v1 o# q( Vif (item j( [credibility] of turtle (i + 1)) != -1)% |! y8 z* ]* C- u; k
;;
判断是否给本turtle的评价质量做出过评价的节点/ M* q  W( Y! R6 z) }
[set note (note + item j ([credibility]of turtle (i + 1)))2 D, w6 e: N) h$ X
;;*(exp (-(people - 2)))/(people - 2))]
) s( m2 Y7 Z( ]0 t
set k (k + 1)
5 A" L4 U& U: h4 A# p5 n]/ ?( C9 u5 G+ p& w
set j (j + 1)" o+ J/ |; z6 y. [/ }
]
, a) k0 ], m$ V8 D! \0 [set note (note *(exp (- (1 / k)))/ k)7 e( Y; V/ n, P  N7 f# J) x
set credibility-list (replace-item i credibility-list note)8 V3 V& h) T% ]/ F0 f& m2 d
set i (i + 1)
( v; i, A- V  q2 f6 B]8 o3 K. ]" q$ |3 C! d
end
6 P" O5 p/ |( ]
+ j2 t0 |( m5 ?! tto update-global-reputation-list9 g! @  `1 Q2 b# ^  C9 ^* L
let j 0
4 [* d7 x# N+ @5 R( o. dwhile[j < people]
% f6 o: [( j% w# {, X9 X[( ]7 e- z3 M; |3 ]2 \! P
let new 0
4 V/ Z0 `$ G1 H8 Y. K% _; v4 U' k2 j;;
暂存新的一个全局声誉2 M0 I6 R  a7 a" n
let i 0% j: A7 F: V$ h# y5 e- R/ k$ h
let sum-money 0
: t. v" ~% _3 {+ o0 Clet credibility-money 0
) k% y2 ^  L( D) O' Q+ Owhile [i < people]* j; D& Y" v2 G) ~% J. C) |1 n
[! B) u/ z; W, \$ z3 U5 x% d0 q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 I! Z! a7 P% ]% Z( N; }2 v$ V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! a% I0 \& e8 n( Z, n$ Eset i (i + 1)2 J/ c6 ?0 R/ U5 P& U# Y" }
]) i/ h  P7 ^) A
let k 0
; D* @; I. N' H  slet new1 0
. f5 n3 z  N/ E2 x4 Z  D( xwhile [k < people]
' _) W1 p8 ?# w2 t0 c8 q; z[5 Q9 u, P" U2 Q6 R' N& T2 i
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)
1 I+ s& M6 n- L, L" @$ \. Sset k (k + 1)" i4 |) ?2 i+ j$ l$ _% j
]
7 n$ E9 D/ n/ @) `3 `2 W$ A7 uset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ ^. l$ |0 `2 [6 m  J8 g+ O# @set global-reputation-list (replace-item j global-reputation-list new)# j" _. b, o) @& M1 ]$ e) n5 `
set j (j + 1)8 V+ l/ \* ^9 j5 S% q' ]9 L
]& {% b/ g1 |5 ]
end! j2 t9 m# h' y7 m% \: \
( \: U5 A; B7 r/ q/ ~

( m6 j& O/ a. D. g( D
9 T" ]# W1 ^% i+ K) q& ~  Bto get-color) A2 o5 ]0 g! m
; e7 M; Y$ ~' E3 t" t& b7 u
set color blue

4 W- r4 Z2 }; L9 pend1 {5 _0 Q% v4 r" b" K8 H* F$ a
% M$ k8 x8 g! a
to poll-class
  w4 |- X3 H5 v) t4 Yend
+ [! P2 B: z$ m9 \* W. Y: Q7 i& w/ e
to setup-plot1
. y+ L2 k4 J3 y( @  z2 N  o9 U: }& y7 I/ G, G1 l3 W
set-current-plot "Trends-of-Local-reputation"
5 A' u4 ?. Y0 E  ~& p

& S8 p7 x0 M% a+ j& Hset-plot-x-range 0 xmax

/ C$ f+ J( R5 ^! U8 o( w% A& i0 u! J; J* {' W# S  }& ]  z
set-plot-y-range 0.0 ymax

* P8 a1 p! s3 A" m3 j; Tend! n: R! \2 ~. s2 o6 b, Y
. e2 h- X0 i* t3 B3 J( T) o
to setup-plot2; D& R8 w8 U0 R

3 @) w% a# I3 S4 Uset-current-plot "Trends-of-global-reputation"
! k7 h% H% P) O1 |

# {2 D8 t) R" R3 z+ C7 Sset-plot-x-range 0 xmax

# ?- {: j# I) z  Y! s; r- @  ^& E4 ]/ q( d( v
set-plot-y-range 0.0 ymax

# v) I9 U. Y, j( dend- W' q) E7 ]3 D+ Y9 ?/ ^4 |! h+ `; X

! I; t3 V% F; J* d& \' Z, ito setup-plot3
* X5 n3 ^! a/ k6 ^4 b* K! |4 m% p7 T  B
set-current-plot "Trends-of-credibility"
# n* Z- M" U# c6 c! }9 B- N! d

1 H% l1 {# P2 n/ _set-plot-x-range 0 xmax
  j  ?# ~8 Y; R) [( ]6 |( W
7 Q9 l" Y2 q) N% I+ t+ }
set-plot-y-range 0.0 ymax
$ e, ?1 R3 F  ?
end
4 f  O: |9 B9 ]+ g9 Q: H( ?& y; g4 Y" u: f* D& D
to do-plots
+ b& n# r: y( f, H9 @4 ^set-current-plot "Trends-of-Local-reputation"5 t8 n& L6 K" ~, B
set-current-plot-pen "Honest service"
# ]# @' y" i' ?* Q( N: t0 Jend" ]) ^. W% a# v/ B) p6 y' C$ O: h
$ }$ X, J' D' d, _7 U" q' k
[ 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.
3 t( |+ \* k% g, t) u8 s$ |. S
1 }$ Y+ u8 l5 n# n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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