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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:
$ R# A4 T- a# b6 G, H2 nto do-business 2 z& }1 r) A  l  C# I( X0 X1 q
rt random 360
% G0 G. I9 o8 w! ] fd 1
# b5 @" ^% L4 h0 _9 L0 Y# t ifelse(other turtles-here != nobody)[. f( S" P4 S* y0 q- t, p' s! f% z
   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.
! z: v& o  I; r- N: m# x   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. {4 l( f( P5 M   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& N5 i& x+ I1 F0 D
   set [trade-record-one-len] of self length [trade-record-one] of self
, r1 N/ ]+ G5 L: W$ h) f% t, O   set trade-record-current( list (timer) (random money-upper-limit))' N1 F( r: @% S" V' W) l; ]' J
% F) J; E! L1 C. f
问题的提示如下:; _, t* k; `3 P( C. ?- B/ z
( _- r* J4 i  s3 m. m% q
error while turtle 50 running OF in procedure DO-BUSINESS
( R0 u$ M% G; D0 c  D$ s. j  called by procedure GO
" ~# a) G; G9 f6 F" |/ W4 R' ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 ^, V! |5 V! Z! f; i( ?: i! E8 h
(halted running of go), j4 W6 F( B. ?- q
8 X+ t0 C- C% R) M6 M: n6 k# I
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~~
/ n+ W1 ]0 G0 @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
, M5 S  L! l& R# I9 Y3 g3 @/ x4 z+ gglobals[  B3 D) b% i: k
xmax; c" @8 m7 ]/ m  n, E' E
ymax
0 W. U5 Y2 @5 @; ~& y4 Hglobal-reputation-list
6 n* j, A. W3 m% ]+ V7 T' }/ ]0 i8 x4 `
; o9 m# |  _7 Y' ?1 r, I( N;;
每一个turtle的全局声誉都存在此LIST
4 ]$ k. u2 Q, N- a/ ^5 ]' Ocredibility-list
1 d4 c; p6 ^9 p' R;;
每一个turtle的评价可信度
& ?" R* H& v/ Y; P" V0 Ahonest-service
# J. r3 c8 e5 X1 Eunhonest-service& t- x3 p7 W' ~5 Z
oscillation
5 |) c8 {; w) \- I& trand-dynamic9 X9 k4 D! D/ n
]
$ `0 X9 C. ~& t! M. _/ x* ]. K! f7 o) |7 Z
turtles-own[
! }; J; s# Q( k$ a  B- w4 A& Mtrade-record-all0 |7 e0 c, j4 l+ A. y$ _
;;a list of lists,
trade-record-one组成& v, \, A9 Q: k: d% D$ X! n
trade-record-one
0 q9 C/ g: v0 S! x;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# w5 D; |' H  S5 K: S
7 B+ N! |0 h; b+ e/ A$ N" l; X# k
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
3 |4 b) u' L: Xtrade-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]. N5 z! b$ ?" K) W% v
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$ v3 x4 P" f1 {1 Q8 a! j3 J
neighbor-total
) M  n, `+ K# k7 c" C) a+ S5 b;;
记录该turtle的邻居节点的数目& \5 p/ u/ f( b3 I$ t* N& y+ i
trade-time. A4 p8 l+ o; H3 h+ W5 c( w
;;
当前发生交易的turtle的交易时间* I  ?, c* w7 q! J) k$ U
appraise-give
+ S% B9 N# I5 Z# D+ y& _;;
当前发生交易时给出的评价
  s$ S& q( C6 N+ B$ B* c: ?appraise-receive
8 s5 b5 Z9 C- w;;
当前发生交易时收到的评价9 F% B) l1 |4 b, t
appraise-time
" y% i. e1 _7 v: G, k;;
当前发生交易时的评价时间# Q- H' \0 \$ U& ~8 ]7 u
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 K$ V+ [7 w0 x7 W/ a) \trade-times-total& s$ s/ j4 i* D6 d6 p9 }  h
;;
与当前turtle的交易总次数
/ R$ h& d5 l9 y" [9 K  b0 O/ l( ytrade-money-total
4 B$ K4 R5 U0 d4 m. i, y2 f;;
与当前turtle的交易总金额1 Q6 I2 d3 A+ j! S. n! I, y
local-reputation1 e# t4 ~* a$ h+ I- u
global-reputation0 R9 m. }  p1 d9 J' b
credibility
+ j$ H! l8 i4 G) j/ |4 e; g;;
评价可信度,每次交易后都需要更新
, Q# f. E' I) O! p3 p" F- `credibility-all
+ Z  I) @: E% d4 t( v6 x9 B4 {;;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
% x9 ]) V; f! H, P  n0 C( P. V" d: b6 z( x- J- Z& N
;;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% c6 B/ n! r; G$ W
credibility-one
$ \( P) V! Y. I$ 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people3 q+ S# p3 b& [) `) {
global-proportion
$ z, i9 L: a2 o1 N# D% }- ecustomer
$ L; _: d4 i3 R# A9 v2 b) X7 v9 ecustomer-no
% [1 Q# n* P" l( Htrust-ok. n# x# o4 w( u
trade-record-one-len;;trade-record-one的长度, P8 }  V: I* g8 G9 ^/ t
]
( o. i: i3 d6 p4 t( b! c
4 o3 a# u6 B, I9 X4 [& Q( |;;setup procedure7 n1 E% a8 _6 z4 c8 q' i

1 M, }; ?" G* t/ u' vto setup
' J4 a! j  D, u; O( J( _, v. r2 m" x" A& ^  Z# Y6 [* u
ca
# ^$ v! u6 l/ u3 u! Z

  n) U  A% o2 u: @. E3 cinitialize-settings
- s5 l" U0 B. g& r/ r+ v* @
, c4 E" ^; k+ R8 Y) F
crt people [setup-turtles]

6 C1 D) X' \) F; D) X" N! Q7 Z* n3 T6 [0 m' S; @  ]+ [
reset-timer

& k: Q1 j8 z* k1 r- f& y* A, t+ ~3 S9 b! E
poll-class

0 ~+ T$ J2 ?9 E3 h
! N  Y. B$ T: j: Osetup-plots
* I, T$ y; N& `# M% J# [9 H

5 f# Q9 V- a* `9 F/ E2 Zdo-plots

  O: b! S/ d- D9 i9 O- d+ y- Wend
: m* L' R% J, J- ]2 ?+ G; n/ M" H  Y  U+ n4 r* ?$ P3 a
to initialize-settings
$ \1 i: v, n1 ]& ?$ r3 l5 j) l  e5 W7 I5 A1 E
set global-reputation-list []

; {' Z0 f% \: l$ ^8 J6 E: f0 V1 {9 m  J3 ^
set credibility-list n-values people [0.5]
5 y0 ]1 t. H7 {

9 o9 h% ~; H" K! S* oset honest-service 0

* C( T9 n. ?4 v( T  s* }
: Z( j8 j7 t0 _3 }, }2 P- Cset unhonest-service 0
; N" m  j' X) G$ M6 ?

: Q+ w# }; X& S- L: \set oscillation 0

3 _6 v" |# k3 t; [1 [
' s# i( r1 S* b9 c; ~7 `set rand-dynamic 0

' a1 @2 ^3 E' k! ~$ M% R/ ~: fend) z9 U; l# ?" d; G. F+ B+ E2 L
, @" ~0 D- ?1 t3 `+ x
to setup-turtles
( z" d5 J: g* c  N' J/ z/ sset shape "person"2 Q* \0 }/ z/ G. l: m4 P0 K2 m, @. o6 |
setxy random-xcor random-ycor8 H: {2 S- m% a/ c  z7 W( F# I
set trade-record-one []
7 g7 Y) ^/ J) {3 b4 f
- p; T4 d; ]7 f8 y, f
set trade-record-all n-values people [(list (? + 1) 0 0)] 8 @- v8 p3 [" N9 ~% i- z, {
, f( Z' {! Y/ x; e
set trade-record-current []
- j% @. t5 \- s  Aset credibility-receive []
& Y7 u! q; o7 Uset local-reputation 0.5: ?. v- m1 P- s- g& u0 B# q
set neighbor-total 0
# j: K$ v2 o$ Y3 R" ?set trade-times-total 0
  a* }( h( N8 g0 s: k) cset trade-money-total 0
  Z! K; c3 o6 m: h& L# }* lset customer nobody
- Z' z! b5 J$ M1 Q3 o1 v$ Y$ V, Bset credibility-all n-values people [creat-credibility]
; p3 V1 y# R& P+ S9 s. F. Oset credibility n-values people [-1]5 v! _4 P4 C1 Z8 ]
get-color2 y8 [# b9 f6 t
9 }+ n( G( G8 F
end; W! N$ k1 ^3 S; B6 a4 A( F' ~
1 d# N0 _4 E2 f4 M) v: i
to-report creat-credibility
" Z& E8 X. {4 L0 t5 {: Ireport n-values people [0.5]
+ W0 o5 Y7 J( y6 fend
+ }- K: Z7 j$ Z3 N8 \* n/ M8 O9 w5 h/ c4 e  Q0 z
to setup-plots; y. g- {) Y0 k

5 h7 R1 j) Y# ^& n. q: vset xmax 30
/ D8 \1 `5 X6 J) F0 f1 @; I

2 y8 b  p6 |" U! m" ^6 I! rset ymax 1.0
2 B# w0 Q1 J: g2 j: P5 U) R2 Y( l
- t; \) f" ~; `  l+ P6 M  F. J
clear-all-plots

8 g* ^' Z, a- x/ B2 ~2 o0 _$ l- {, q% t' J# G
setup-plot1

; p* y8 |9 U: N& q6 c5 C, ?0 H
# Q# _7 W8 J9 Bsetup-plot2
7 D5 N  S, N4 G
( b5 ?; |" a' j6 i+ H
setup-plot3
4 E! d9 m2 {' N
end0 z: `0 t9 T: h0 Y2 g* T: g4 A3 }
- e' X5 [) y2 p# m" C5 P2 h+ u( k" u
;;run time procedures/ f& \; i# l1 x( ]3 x/ `

) e+ H8 C2 l$ [3 pto go
5 X2 u; r5 I. @7 H2 d( J+ L" F9 T
ask turtles [do-business]

; _# n, ^/ H! t8 S- y3 \end( N% D4 i, r4 E5 H
) E0 a7 |# v9 ~5 {
to do-business
2 T! A; l5 o2 z( N! u
7 `! D  P' v- x% R2 P, u9 I( q

0 i6 K9 ]1 e) y0 ?, grt random 360
1 A3 W2 P9 P( I  s* |" u) l- w5 h7 E

: a$ s9 t/ j0 R& D4 ?fd 1

. p2 w/ O2 O) m1 Y; m. u# K
" g5 I, E4 s) L1 @$ ]: f+ ?ifelse(other turtles-here != nobody)[
9 c6 k4 M1 p* p1 K6 B' q% J

: J$ Q) k1 v+ {' `! ~6 C- Uset customer one-of other turtles-here

' _  h+ Z1 T6 B1 W% C
7 l) s8 S2 f9 Z! U3 i5 W% a;; set [customer] of customer myself
/ W# A7 k% A  h$ e  y+ t1 A; e4 K

; q9 B8 ^  |3 N  ^set [trade-record-one] of self item (([who] of customer) - 1)
; R% w4 R" v) M# Q/ O+ |; h& S: k[trade-record-all]of self  E9 m  |( `' H
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! A4 `! J; S8 c+ E! @1 G+ E* `9 v
- P/ X% z' }* |4 pset [trade-record-one] of customer item (([who] of self) - 1)6 R4 r+ d" r7 v( F: q3 m
[trade-record-all]of customer

  F3 O1 n. M1 w& o0 V$ o5 J9 A+ n+ |, Z1 T6 u$ i
set [trade-record-one-len] of self length [trade-record-one] of self

$ t# V  m4 G6 X" O: W
2 }& y% U- Z3 c4 J; lset trade-record-current( list (timer) (random money-upper-limit))
* f9 n! O: y2 v# q" b9 c, C
. N+ t; V1 i9 }6 p$ e
ask self [do-trust]( @' _0 H6 |: ~3 j
;;
先求ij的信任度3 a0 i0 o4 F9 ^) y( u3 S
' P5 B1 D8 g, n! p
if ([trust-ok] of self)6 R( ]  ?& f1 [7 N8 a5 K; p& j
;;
根据ij的信任度来决定是否与j进行交易[
9 g0 i* Q6 G% A8 e0 A7 J; y' Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& t% Y6 ~% v  K% X5 I1 a5 x" y; K& U8 [: W+ P
[
6 ^0 O9 Q* ^; o3 D

7 _5 M. G2 s3 _1 U, O9 }7 H% Tdo-trade

% {/ h7 @5 `8 i1 P# `$ B5 A$ i" a. e# {4 t# Y' w8 \$ w
update-credibility-ijl

+ b* _0 V+ Y6 U
5 [% ?+ f4 S! Rupdate-credibility-list
) J, c; w8 G+ C0 J% l

/ X% z  P0 d  n3 i8 s( s) H0 E* a, O  R: l1 m/ ]4 O7 S
update-global-reputation-list
4 P2 e1 Z% a' \7 K. q

9 X/ U- Y4 |6 R/ Ypoll-class

: F. h6 J" ?" J6 z" |
2 w2 x" P1 o# Y3 Z% @4 k2 C6 Sget-color

5 H5 ^* `, U7 m; O% N7 C# t8 p$ y2 a" Y  }2 w+ R
]]
$ [4 F) s* Z1 \2 x; @- P9 e
: J( E: z& J) q;;
如果所得的信任度满足条件,则进行交易+ }9 C7 L6 O4 t- y

7 ?, V3 Q( p: F! u4 C, ]: a* V[

2 {% v! Y& ~5 k. T5 m  T
+ R. u* L: A( y/ krt random 360
. m# u- ?* o$ A0 x
6 g& @+ I+ ~' `0 @
fd 1

9 L- K; K, k8 _2 W5 D
3 @: d/ }' f. ^$ b+ v0 v* R]

# K) H' I# P6 f4 }9 I! \% A* G
1 @% @6 |9 B3 ~" \% Z2 gend
# w5 D& M( x/ @! y
+ W( l: X$ l2 B3 g; a
to do-trust 2 c" A" k, t+ W; Z# p
set trust-ok False
6 W2 P9 ?. `! u$ J& T$ V/ a& H& E* q6 u4 B5 ?
# V* X8 f  I9 t8 I, H
let max-trade-times 0
) [2 R1 F# \- ]foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]  x/ r+ q' R5 c, n( n9 K
let max-trade-money 0' k; k3 G, B$ s: p. L/ z! O
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# w9 [0 V: O1 f! z) V  b4 P/ x" e
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& p9 u3 ?1 t  |
) `& n* R4 H$ A" A# B/ z
# G8 \0 k6 Z) E
get-global-proportion$ ~& A3 R* J# `+ p. c( P2 F; I% T* ]
let trust-value& h# M7 K  L$ n! _) W
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)

  k+ H% F- i( Y" f9 M9 D" t  ^if(trust-value > trade-trust-value)% t+ q% @" p! m' a/ J) ]" a- z% H
[set trust-ok true]6 ^$ O3 a% q( i0 b
end  b5 S0 Q( E8 b" K6 E3 Z

, n* d0 p' ?1 Ito get-global-proportion
* H8 P9 X/ K4 C/ {! F/ w& zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  n  F. i! y4 V- }" k- e$ s  u
[set global-proportion 0]( O) y( [' k) S" M5 `
[let i 0
' F, P/ ~# \. X1 y7 t4 O' \" B- Klet sum-money 0
) v9 f3 l6 n( \1 q( }while[ i < people]# j1 r3 t4 }! X  {% \9 i" y
[6 \& X$ m! m2 C: [* g
if( length (item i' a# u$ t( g8 Q3 }8 A  x
[trade-record-all] of customer) > 3 )
  x' e" R, {4 f) U: G
[
2 Q! P6 E# R8 o6 V( }set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ d; T  x- v: P+ p. o]
' R1 e, [% q% e. A. Z]
) g, W! v6 }! ?5 X. @6 wlet j 0/ Q" C. d6 G+ D$ S0 g& }* C1 t* {
let note 05 E/ k* ?/ S/ H; E3 a  N! z
while[ j < people]
7 w+ G( e2 m; `. Y[
: T5 F+ J* n8 Dif( length (item i
& m. X7 i1 a. g7 k! Q1 n+ `( v[trade-record-all] of customer) > 3 )
% B$ e6 _* z$ z: `
[
: \- `- b! P' w& ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) j; d7 @9 ^* p* w2 d, D
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- `5 R1 [' i; o8 B9 C# k" P
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% T$ q# H4 r4 s: F4 q
]
, q; W& u' G2 O/ W' `# F3 b]4 ~9 o0 O4 j9 R
set global-proportion note
) A/ z7 k  I0 e- a8 Z. V( u8 y]! g' t& o2 x5 A. P5 s
end1 j( r+ h* X& T" j$ ^$ @5 R
# S8 o( \- y" p: q: A5 S* ]+ E+ G
to do-trade# M- [: V4 x2 Y8 G9 \
;;
这个过程实际上是给双方作出评价的过程
; N& F0 o* {* D+ [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# i: ?) i( `; Z4 o* F4 B6 |6 a& Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 {  V/ \2 v# P: n& Zset trade-record-current lput(timer) trade-record-current
, m: |, F$ Q' ]  q; k) q0 J/ N;;
评价时间8 E: B7 o  m6 V/ P0 z1 G* y
ask myself [
3 d4 j4 w+ j( g0 X" kupdate-local-reputation
6 |# u1 C9 }7 R; R$ h) s0 jset trade-record-current lput([local-reputation] of myself) trade-record-current
+ U' M; T' t+ E$ k  y) A]
0 b, S$ Z7 a3 g2 H9 w( pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& _, \$ Y8 c( w, M- d, e
;;
将此次交易的记录加入到trade-record-one
; E. W1 U( G- ?, f, Aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 F1 H4 \8 o. u# s
let note (item 2 trade-record-current )
1 U0 [3 x/ w- ^- L) B# qset trade-record-current# p& R8 o! u+ |2 y; B( x
(replace-item 2 trade-record-current (item 3 trade-record-current))
0 }1 l3 I' [9 x$ N! ?
set trade-record-current
" C9 M5 K9 W2 y, q(replace-item 3 trade-record-current note)
/ d+ H2 w# m+ S
- x0 O, X2 S$ \( F4 ?8 i; Q

4 f. C2 ?1 F1 i. w  m9 d' m$ g' yask customer [
! q  i8 W* v5 F5 m$ Pupdate-local-reputation
5 g+ J4 o' u" Hset trade-record-current
. M5 M$ e+ {6 d(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 H  ~7 Y+ x5 x( g% Q]9 }  x+ ]6 b* I" S: p# ?4 {4 y

2 [, f# A% m" _4 B+ {5 ^+ m: {; o
8 S" r, {2 h' ~$ U1 K6 k' V
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 h9 v. N$ c$ b6 A% Q6 W
1 ?% E) k" G3 v$ i8 Y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& l  d8 h# p! ], ]% F3 {# o" P/ y
;;
将此次交易的记录加入到customertrade-record-all" N5 b8 \/ J/ p9 f& B
end
/ Y- u- R4 f# o& ^! A3 {1 H
+ e" ]7 j0 f! z' \# e# }; r- D6 e+ v1 E8 Wto update-local-reputation1 c' J& E! j: r  ?% d. [
set [trade-record-one-len] of myself length [trade-record-one] of myself. c6 J' Q. C5 n3 G4 i

5 V# x! k: d4 K9 t% p( C$ _$ |! C
5 \! R, Q0 u7 B! t1 }" _; \;;if [trade-record-one-len] of myself > 3
1 z  u4 R2 B% B. `. a. [8 [
update-neighbor-total
+ U/ f  W/ I" T" e  M;;
更新邻居节点的数目,在此进行" H* e  W- D6 W( s( c
let i 3
* E1 W+ b0 d2 Z5 F2 l. e8 p" Tlet sum-time 07 z4 d3 c" H5 b5 m4 M- c
while[i < [trade-record-one-len] of myself]
$ H  U" ^' D3 `- b3 z[8 F+ ~2 v0 M: Q5 d) b
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 w, G# c8 b# ?
set i
$ q0 A$ U2 I% y/ h$ A# o: l( i + 1)

" z/ s( s" `- y8 l$ K; a& g3 [. l3 F! Y$ h]0 ]9 D! \9 f1 ^" @; i9 c
let j 3& A  D5 R: ?, i. n
let sum-money 0  u, i. T' E/ O0 n
while[j < [trade-record-one-len] of myself]/ E$ ^& c2 l& |
[
( X5 x$ p9 a. a  h4 U" H% o7 V% Wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)" T2 ~+ C/ C3 Y" i+ q
set j
$ Z8 U2 ]8 G, W( j + 1)
1 ~3 F' S; u; Z2 e& }$ E: N0 b7 v
]
" u3 L7 S; s! s( {let k 3' x: d9 f4 O4 u, ]/ M- b1 z
let power 0( s- \& G5 A, I8 C4 u7 k4 U% A2 \
let local 0
% g8 L- {$ i3 J# G6 @  [while [k <[trade-record-one-len] of myself]0 K' A. M& T/ b, s( ^# j/ i7 x8 F. k
[
/ d/ Y- V1 [5 O, Sset 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)
( e  l" Z& L) Y6 n/ y4 wset k (k + 1)
& f0 w) m2 z1 [# _]
5 N) e1 k  l) B. Y# _8 G& Mset [local-reputation] of myself (local)
8 t5 C3 U) y$ b* ~5 Kend
4 n5 \3 |' Y  l2 l9 t
, M# Q6 T$ w4 n5 C5 A4 T) Vto update-neighbor-total. y+ ?' ^3 o, F) t4 l$ U9 e" z
; I( }+ k* Y8 ~: F3 a8 Q% B
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, f0 d8 n. A$ Z& k$ T% \/ o8 a4 o. q8 v
: k7 o) k& e7 R$ J
end
% O" a6 w! R. a* }+ T7 y: T/ G3 q  i/ N1 f3 ?2 q( E
to update-credibility-ijl 6 o. Q6 y) Z, Y2 I/ }! Y8 _
  K& q; D: I) z& y7 O
;;
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。
  q6 W5 a$ n* x3 j! Llet l 0& C5 }1 B+ u# A9 Q  f6 P$ r9 m
while[ l < people ]
4 \4 y7 g, D1 f: d) E5 l;;
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3 \- @, L3 l2 a2 d5 ]% }
[; H, X4 U: }) |, k$ g  J2 o
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% A2 w' g% `) a8 R: C$ d7 aif (trade-record-one-j-l-len > 3)/ q( J  j- b! ?) j+ }
[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  J% [7 _0 f! V4 W8 A
let i 3# W4 H# ]1 u9 E( d
let sum-time 07 j7 n+ d1 X' h* e8 S0 I
while[i < trade-record-one-len]
& C' w# b4 M# _% t% e[
$ A# y; Y& B) O0 _+ Bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& y3 F* Z* n; O* Z, c- n
set i% w2 v# G* ]9 X* d
( i + 1)
: z2 v) C, O: m) Z7 R7 y7 K
]% ]" W; E# c" ]8 M: h+ A- \
let credibility-i-j-l 0
: s5 f% }: h/ g& D;;i
评价(jjl的评价)) W! d; u4 D' ]. X- r; p7 P
let j 3+ ]0 b3 f: Z* x9 G' f
let k 4
/ Z+ i8 d5 b- Z. H7 ?9 `$ |0 f; \while[j < trade-record-one-len]
& Q& O3 `" ~6 R7 v[* }8 }, Z" L* d" l( n1 y1 z2 k
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
' ?# R7 _% c* F' ^. Z4 @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)# F4 G, h% f7 D5 m. b
set j
3 v# F9 z9 c3 }  W( j + 1)

. q+ Q4 O1 U1 W- O: w]1 n& R- F6 J- A4 p' _
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 ))
  Z1 z$ e) n' k: g, G1 D1 ~! |( H1 Q. q5 P% j2 J

% t6 ?. u/ j$ n' Ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 a$ S) v- V. c1 L% l
;;
及时更新il的评价质量的评价( Q6 X6 l* `/ p' j" o" C. r
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 u) q! ~) `  j  A3 A
set l (l + 1)
" |: e! W: l5 A, {, I]$ C+ U* {: a% R- k6 z: Y0 T6 J
end  C8 C+ _2 G8 [
8 U- k' w! w7 @; `
to update-credibility-list# v0 }9 h; k) S
let i 05 X; P" i+ n) U) J9 E
while[i < people]
; z, l: G3 u- L" s9 T[4 h. @7 z5 f. m' ^: y
let j 0
( X* b! F* ]1 T+ m3 ilet note 0. I0 f, |* V& N
let k 0: g8 L( F  O" V/ J8 o
;;
计作出过评价的邻居节点的数目
3 f2 l" A9 R- T" O5 zwhile[j < people]
* V* O. q; y; i* x[8 g& i9 E) Z( W; w# H
if (item j( [credibility] of turtle (i + 1)) != -1)
5 h2 n$ D7 U4 d# o  m;;
判断是否给本turtle的评价质量做出过评价的节点
; M3 G$ F+ e) V) U! S# h" |[set note (note + item j ([credibility]of turtle (i + 1)))
" t% _! }! a3 ]! A! T;;*(exp (-(people - 2)))/(people - 2))]
: U' e6 ~! P5 e" x! V1 P+ O
set k (k + 1)
( `$ ^4 `2 f2 \7 X/ W0 F" `2 v]
. Q1 Y& ^, {, m) H* ?/ b2 [set j (j + 1)$ e1 [! Y6 G1 q
]
- Z" y! n) g4 ^' t- M8 mset note (note *(exp (- (1 / k)))/ k)+ G( g/ J6 p3 S7 N2 c5 H$ @
set credibility-list (replace-item i credibility-list note)) W- ~' ^; {6 U$ ^
set i (i + 1). I* r1 }/ q8 ~6 z$ r6 ?" [! }1 {
]
* U: ]4 L! M# b  A4 ^end# `2 b2 U6 [$ x1 H
& K: h8 k) v2 L3 ]6 d" z& a6 p
to update-global-reputation-list
6 `! E  G- k* u% l7 U' e6 T6 Blet j 0
* Z$ U9 k$ D( l: h; l% W" v4 Cwhile[j < people]
1 |# J$ l9 m* a: `+ U3 g[
* f, {' F. a' ]let new 0
) L2 |. f$ d# j, d; A;;
暂存新的一个全局声誉
. x( g% h5 N% ^5 ?) Ulet i 07 x5 V  o* J0 Q" b9 k7 R8 w5 b. W
let sum-money 0# K5 F  P* @0 u: ^
let credibility-money 0' z: Q: l6 X3 F- c+ x+ y4 V' Q
while [i < people]
, ]) P6 p; \3 x1 L9 S[1 ~. z( _  ~8 f( D" C( }* ]; o
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), k+ a# d9 k2 Y% v
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: G( f* y2 e, l; b; e1 V# u" P- Hset i (i + 1)
: h4 z  D8 ^3 ^]
! @) p9 r+ A: Xlet k 0) z8 t$ k. Y( T) F6 R+ u% v
let new1 0
* ?" d2 N6 @; w! K* vwhile [k < people]
7 s. u/ q4 \" d[
4 v# A7 ~! R/ x/ X9 m. `7 P% A7 E% qset 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)8 ]$ U8 y* e& N0 y
set k (k + 1)
9 ]+ y8 k( T1 a& ?' E]
2 x1 W& J) f: }( g. m9 Vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ a# m- ?& H4 q! L) O6 b
set global-reputation-list (replace-item j global-reputation-list new)9 q3 d. \0 I% s$ s! w
set j (j + 1)
8 c' I; R) E4 W; q, y]$ n& u/ V% a. a( D6 A' M
end
$ z- O6 Q, @9 s8 @) N8 x' Q* z! S; u! ^' H' p- N1 s! H

2 _8 J2 n4 u4 q
! E1 h( H; Y3 D+ `# M8 l6 _7 _' ]to get-color
4 ^8 j$ U" C1 ~9 j6 ?+ R
/ P# x. ]% L& Eset color blue
* C( V% {$ O* d! p. l- L
end
) z6 B) \( B$ C- S0 f1 O7 D2 ?0 l! j& [& e1 J9 K- ?8 L
to poll-class
/ C+ P3 e8 U. C! u4 Send
: j5 q2 w+ G4 K, t( s- b, y' E. D5 d7 J& W* j9 E
to setup-plot14 C7 I. {  S( [( @3 ^
; T, o- m$ m; H1 J/ q: _% f& }
set-current-plot "Trends-of-Local-reputation"

! R7 N2 h+ O5 f8 n7 n. g% T2 V# j( r' {2 Y' G
set-plot-x-range 0 xmax
6 w. ~) [2 J: b* G/ d) x
* d- e& r% N0 i" B1 w! }1 |
set-plot-y-range 0.0 ymax

% w' N# a6 g& K& z6 pend
' B; B- ]+ S. @$ J. x2 D/ H8 S' p4 e' K
. E# k6 Z5 ~  T5 w. |  q- uto setup-plot2. k  K! b, I3 y  ?3 {% r
: g$ A  |* O5 C( u/ u
set-current-plot "Trends-of-global-reputation"

5 H! H; l6 A# l( p; v8 F! e+ D2 d& j# p
set-plot-x-range 0 xmax

8 l% `$ T5 G( t% X6 q
( F( _6 l" z* Qset-plot-y-range 0.0 ymax

& n" n3 a3 o/ B/ x; _end2 J$ q( h  |0 L; D9 \1 n) }* {, c: e
( }( i( f/ \- c
to setup-plot3$ f, R) C! Y8 }+ D5 \
' \1 q6 t/ _' W4 d4 C' j
set-current-plot "Trends-of-credibility"
0 u  L* X/ a" m

, p# \" D4 u2 i6 \9 R% Yset-plot-x-range 0 xmax
  P. j0 X/ q' P, z# f+ S! h1 V! c
/ p2 A9 `" c# ~6 |- S
set-plot-y-range 0.0 ymax

) b2 A$ ^0 r6 S! v4 w. Rend
4 w4 q2 I1 i1 k4 g, `: W) N8 y) a: T8 F
to do-plots
' U) [; e0 a3 o/ t8 b2 w' ]/ bset-current-plot "Trends-of-Local-reputation"7 ^; N) ?0 b# p5 R7 C) B
set-current-plot-pen "Honest service"
: Q. i7 n6 x' `9 l, w. ~$ B% [end# o, ]* P/ |: {4 t( ~8 p4 K& l3 l

. E/ Z0 v1 z/ k' ?% R6 v2 j[ 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.
7 S. `7 O7 v1 X) A' l. p
3 u$ z1 Z" S2 ]: o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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