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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:2 [5 k6 B. W! u1 Y; C$ L3 `/ U$ D3 P
to do-business
4 c. `! a0 ~6 s! D0 e6 ] rt random 360
- }! U0 q  |0 T' }9 N* [ fd 1
6 @. [6 J. g' u7 J ifelse(other turtles-here != nobody)[
1 H8 D& g) O( v- q3 I- L. ^2 ]   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.: ?. _& Q5 F2 H8 c! m* c$ F0 J- f1 n2 k' C
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 ]: F1 p( ~; F+ P/ `$ Q; R
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" h/ X# n5 l% ~* U# `   set [trade-record-one-len] of self length [trade-record-one] of self
4 e$ q' ^! ^& }; J- f8 _8 R/ I   set trade-record-current( list (timer) (random money-upper-limit))
) r" X3 i6 ]6 N$ b0 F! ]1 V6 e9 X) h+ A6 S! v9 i5 a" ]+ Q
问题的提示如下:- U6 @* }# ]& M3 D& B2 T; m: O9 N

- L& c4 ^4 x) s0 ~+ R% {error while turtle 50 running OF in procedure DO-BUSINESS4 ~2 w" O' Q' I. `$ h
  called by procedure GO
/ `7 P& L( N1 A: C# g  oOF expected input to be a turtle agentset or turtle but got NOBODY instead.0 h( {7 y/ u) P% ]5 g
(halted running of go)
2 C; p4 b4 Z7 z) |2 T* B, d$ ]  b. R3 N/ g4 R
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~~
$ @' F" a/ k7 r/ s1 B8 V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
. z1 G; n/ |( P+ I4 bglobals[
1 h0 T5 q7 D% J5 d# D4 sxmax! F$ g9 J# t: B7 v8 a. J$ P# v
ymax
# f6 a; {4 R+ J" w2 @global-reputation-list0 D& D- H: V( p; y

! M2 j( V1 N7 ^3 |' S5 n' [;;
每一个turtle的全局声誉都存在此LIST
6 ?, ], s- g4 h: ?0 `credibility-list
1 g+ [( _( B1 w) ?0 o: h' ];;
每一个turtle的评价可信度: {. H  H7 U: d# Y* H7 J
honest-service
# r0 O( H. l0 ?, V$ Tunhonest-service! L3 |4 b# n) d: s* a* B" v
oscillation: t% x  R/ Z. f2 @1 F" `- K6 ^
rand-dynamic
  @3 p& [, l$ Y' |" q2 M3 w8 q]
& R. y3 h0 V" e: t4 {8 ?. j) g" e" w8 `5 R& ?& d) \
turtles-own[8 c9 G: a6 J3 K
trade-record-all4 n' A: U/ h; S+ d% k" c8 Y
;;a list of lists,
trade-record-one组成
7 _# C( I  L/ Z8 Ttrade-record-one
4 ~! ]( Z- x# ~# Y" j' Y;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! M! z8 ]6 n* G

8 ]* x: K* S5 O;;[
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 a- U) D$ z/ g$ _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]: u7 o+ s% \5 @+ H3 O* T; p9 B
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
+ c" Z$ i( B$ a7 K; fneighbor-total
" j) j& m* ^2 t, r+ D% o;;
记录该turtle的邻居节点的数目
  y% s$ l/ ^- p) N# htrade-time, N0 G% Z* ], L3 ^
;;
当前发生交易的turtle的交易时间* v: O/ j9 y" t# B6 [
appraise-give
2 W9 U, C6 {: };;
当前发生交易时给出的评价2 ^, \' W! i1 B2 R; t2 _/ I5 A' s
appraise-receive
7 A1 k' k6 H" x2 |$ i+ r- s9 a. f;;
当前发生交易时收到的评价+ p9 y, \# B  y$ x9 Y1 Z) @
appraise-time7 X5 \2 E' m+ N1 z4 x2 J: |
;;
当前发生交易时的评价时间1 N9 h9 M3 y5 q! i& u1 c2 q* s% T5 \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 G0 y4 p# _1 |( ~4 {) E/ ?
trade-times-total8 H  w! g! A$ E1 H& q6 f
;;
与当前turtle的交易总次数2 D3 F" @1 H4 |
trade-money-total
+ \: d1 K  A( G# [3 s7 a  v8 `0 P;;
与当前turtle的交易总金额9 v+ B; d* `0 r$ i
local-reputation5 b4 K3 t+ q0 `& P$ A
global-reputation$ h4 l" C% G8 n+ j% g
credibility/ V9 W( b1 S1 K* {" }
;;
评价可信度,每次交易后都需要更新
8 }9 |/ [1 `( k! t' Rcredibility-all
. T6 u4 \2 y* R) P) a+ W;;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/ N( ?. E/ [/ E0 c
1 O1 F2 l- o- m2 ?: S3 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0.57 y7 `8 E5 C' V7 I; l
credibility-one
0 C2 O; }! _. p/ n, 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
- F( @) `9 V) O' m- {global-proportion
) {: e* v6 Y! W6 |- O- |# f5 \customer1 J2 ?, o5 W$ i: x+ y3 d' J7 w2 @
customer-no
. p! o/ x1 o; [2 K% Ztrust-ok' ]# t! z& e0 j/ S+ N" q7 y- n% K
trade-record-one-len;;trade-record-one的长度$ B+ t0 Q* D  U; B
]# Z! n0 a" I$ Q  k& D( \4 y" r0 h* g

- C) o- a+ H0 D+ `6 O;;setup procedure" [) T, |9 O6 e% e) X

- V/ y0 S" ^6 H; O* U. pto setup9 O$ [2 ]! ]0 L' W* C+ d& |
, C- ]& m' O' `. t, R: F
ca
$ [" ^* k2 y: n, o+ g, ^( S# z) b0 R) H
& ^; Z4 P! _+ y& L( |6 ?/ R6 n! f
initialize-settings
- C8 ]! G/ `+ C! }3 K' U
# x; T$ `. L% |% G* n& l
crt people [setup-turtles]

. B" d( V7 t& V- I$ Z* u, ~
$ f' H/ ^0 P/ ireset-timer

* L, I8 F$ T1 }8 h/ h* I& W% ~8 R  L* ~5 L1 G! d# e
poll-class

' v/ x# X) ^# J' u( I! v0 M3 C4 L4 A0 g, o2 Y$ w6 ?3 M
setup-plots
4 g5 Y1 E4 v- j0 C
! ?( O; i( d0 |* e
do-plots

6 j3 x* j5 n6 t3 t5 T9 qend
. i8 @% r3 G* T9 S! ^
# @) \" W( |8 Z7 A9 m  Xto initialize-settings- G0 g1 b1 X: _- p( h9 z5 Q6 U
1 o9 y9 }" r3 Y5 G9 v# s$ R" w
set global-reputation-list []
; X; V# u; l" b2 v9 s
, v2 {0 w5 M* O: I! M0 ^# k% Q
set credibility-list n-values people [0.5]

# t- `& [2 E2 O6 [
( S; H" t; r- q2 Z4 Pset honest-service 0
2 I! W* |5 ?. i9 M4 G

; r6 k0 g, Q0 [+ w" Q6 z1 sset unhonest-service 0
8 W3 B9 b8 y0 c+ e" y- c- {' O
8 j* t7 {( I( [8 e3 x( R- l9 f
set oscillation 0

- r- x0 J3 B; h
2 z. h$ F. T, @set rand-dynamic 0
3 c) ~, I+ X; F1 J1 M
end. b1 H, x! d  k7 L0 q: c  ?! G5 n
# p& R6 D; X! T7 W
to setup-turtles
' P# ]5 N" r; i* u- Eset shape "person"' W' |. A( j! T$ J# V! |
setxy random-xcor random-ycor
" d; _3 C" p' {8 g. D5 E- {set trade-record-one []( W; d; [# _! y. a
  y8 v% G3 N  J) ]7 Q
set trade-record-all n-values people [(list (? + 1) 0 0)] $ Z9 J+ W! f" O, o' H/ i2 Q' h' x

5 d2 H3 J: k& {6 P" u6 j8 iset trade-record-current []
3 `4 M" e8 u6 ]+ G3 @set credibility-receive []8 L! y4 ~: U6 V, y) ]
set local-reputation 0.5. B0 N. ?7 a6 H6 W
set neighbor-total 01 p5 S# b: Z7 h  y( I4 z& I2 S- m' b
set trade-times-total 0" l  J) ]& h& H6 h% t6 \
set trade-money-total 0
: D, I9 s/ W) bset customer nobody0 Z* N" k  n, |( O# o& p7 k5 h
set credibility-all n-values people [creat-credibility]2 c% l; `, H# P+ B
set credibility n-values people [-1]9 W( n2 M5 d9 \8 H
get-color
4 t5 t3 |) x7 `% w7 W5 p
* M: \, ^. X4 B, A' T
end! h9 o- S& Q8 N# @+ W/ r+ w. w* O

( q; B$ y% N3 c3 g5 vto-report creat-credibility
6 M( q  L& y4 i: \8 r$ breport n-values people [0.5], g9 l+ u0 p2 A
end
7 ?, S+ Q" N  y1 W# h$ ^. b! C  J: h# w* g9 A# _
to setup-plots0 o( s, D# u# g+ s6 V- @
9 @) j7 o+ D$ S0 T  X- M
set xmax 30
1 c* r' W- o, S" D5 [+ H. _
6 T' o# X# X, S% O
set ymax 1.0

7 O7 N; h( T/ E0 `6 Q
+ x8 W% D) y1 h+ dclear-all-plots

, g& l( v6 c+ M3 O  @' L! d. j
7 {! O4 \9 P% w& }' Q, Wsetup-plot1
3 M8 Q' Z( r2 b

. |4 D) l7 W2 \3 _$ ]( r* R( Lsetup-plot2

6 g8 b5 l" c4 e( L- ?" z" q: ~' K7 b$ I9 q
9 X% [: Q7 K0 _3 B# E6 W0 B- jsetup-plot3
# X% ^- O4 s+ W) H  T, c+ }
end
, f, w4 P+ g% g+ Z, w
! `. _, x6 b" {- v* u, T# n;;run time procedures
& A$ j+ C- V6 S: i  G4 p) X* G. ~3 g3 l+ o
to go( V& y7 _5 ^) ]/ O- o

6 k0 f  l# x" Uask turtles [do-business]

# B. S9 T6 q3 i( aend! _6 t1 R. u6 l

2 e1 {" s2 P* e7 G) Tto do-business ! L) |( V( P3 R; u3 Q
! d4 ?7 H5 P, h
4 n% Z9 Q$ y' ]$ d" B. e( s7 `
rt random 360

! x) \& n! l) x  U5 V0 H9 B5 E0 J% a. \2 v: M
fd 1
# Z' N& v! |' m- y( f

! }2 H$ c( _6 |' `ifelse(other turtles-here != nobody)[
, x" R3 w2 `/ U- r  u9 d" F* W* I
& G  ]7 b" I4 M" ]  E
set customer one-of other turtles-here
/ @9 B( m3 p# a: d5 a9 U% {

* u# I& M4 I5 s2 t$ q& Q( X+ {;; set [customer] of customer myself
" f2 c! B6 V) w4 L6 \/ I! B
- w* H  Z" H3 c: {
set [trade-record-one] of self item (([who] of customer) - 1)7 \! R8 p6 B6 K% n2 j* A
[trade-record-all]of self
7 ~0 ]" z& R0 x3 }0 K! [( K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 d5 H0 J: I" f- N( d& ]7 {+ k

" n# i9 _( ?0 i2 {) p: Aset [trade-record-one] of customer item (([who] of self) - 1)( A* ^% \, V9 U
[trade-record-all]of customer

7 o3 d, ~& q) k
# l" ~, w' [6 O! P  z* R2 \set [trade-record-one-len] of self length [trade-record-one] of self

' Y5 H: y3 o* R: Z- G* w0 S9 Y
set trade-record-current( list (timer) (random money-upper-limit))

  c, F6 N3 r$ |- J/ j( _! V1 k1 K. _
ask self [do-trust]; |" `* o/ U; M: j  W$ b' Q9 T
;;
先求ij的信任度# t+ b5 }6 Z9 k

' ]) Z8 b) b8 v- t9 jif ([trust-ok] of self)7 D' V/ c3 S3 Q, U
;;
根据ij的信任度来决定是否与j进行交易[  C- T0 Y$ i& e) w$ @( j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* y* n/ Q; B7 @" Q9 g
' C( R, s: p' v" L# e) ^[
) x4 D# G2 @! [+ x) V

( L- u* B/ R3 x7 Kdo-trade
/ Q& c2 L% i8 ^4 A9 Y: ?

2 E1 m5 r( I, _: y' Q$ @update-credibility-ijl
+ C: `0 H8 `' B1 a3 \7 f9 F

$ O5 }8 y" r5 v% G' ~update-credibility-list0 f5 Z. M. H/ U7 I: x
# _7 @+ f# y' T

* f" \' v8 O5 ^6 i" jupdate-global-reputation-list

& \- E! W  S! V% O& L, m+ }# G( q# V0 z
poll-class

' ]+ U7 w6 T7 |( s; [( C( F# ~% Y; w
3 L$ L2 G1 @! ]- n4 p$ @get-color

6 c7 _2 o  V. s) x: m/ [
2 Q2 K7 ?) H* h' H1 M. F6 X]]6 ^! o0 X+ H3 M) h. X5 ]0 }
7 s6 u; m6 b( S1 C' a% p
;;
如果所得的信任度满足条件,则进行交易; ~9 e3 a) G) r8 v& \

) B; J2 K% c6 o3 W4 u[
3 G0 S! r( Y/ Z7 x
( a+ F# Q! m5 G+ p: R+ @4 v
rt random 360

' c: _( Y2 [& S
4 e" h4 W  T# S2 h! f1 e! S8 ^% Rfd 1
2 m* L2 W6 M; R# j0 z" {- y

& {. y6 Y: H' P/ ]" }# m]
1 Q7 A. X) L& `. l; H5 F4 I% g

( f  c, d  W' iend

1 G: i! f* r( U, {2 z6 W; z( K6 J8 I
to do-trust 5 Q/ {0 N- u$ L0 b' T  u' c3 L
set trust-ok False
. [: \8 `& e8 U2 B" D( _3 J. B
  l* V) I& A0 R& L

3 q3 ]4 A6 S9 z5 Blet max-trade-times 0: N8 }% s" P# u0 r; k( l
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 q. C$ z) s3 _# e
let max-trade-money 04 V8 s) A4 M% k; F8 W! H+ k, Q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ v2 E& q' K2 A$ W6 G' l
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 u) J8 w; @$ S4 x2 ]# H' Q- k
( W, U; W  X1 w  a" j$ y
; E& k( H6 o' g+ ^9 y5 V  G
get-global-proportion
* u' k  E$ A; q8 V0 |let trust-value$ O0 K( N, \7 j: S, E0 ~. a
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)

( V6 p- e2 Z9 O5 ]. n# w% Iif(trust-value > trade-trust-value)
5 f( z( W5 z, W4 m+ Z, h# o[set trust-ok true]+ y! g0 P+ [) }% g7 K
end2 l: a' @6 P( B- J% ?
" V1 r0 A% i" I1 j) V' Q/ ?7 `7 n
to get-global-proportion5 {8 q2 [' p! H0 C- P: B
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 a' E) y) g  _2 q5 ^1 O[set global-proportion 0]
9 T0 y# q+ k6 ?" l- {) O[let i 0
0 w( G  G6 Z: H7 d8 ~4 Flet sum-money 0# a. p  v& z# S# \. B7 q+ p" V" z
while[ i < people]
3 d8 x, B& K" f5 G! F6 j- ^[
( f  ^! x8 Y& f# w! `6 `if( length (item i
( w" W, q$ ^" E( n2 j[trade-record-all] of customer) > 3 )

' U- S3 {7 z1 {: p8 }, B[% }% I6 S( e* |  v8 y9 k( X
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: R% A% W: y! z]1 m1 f5 g, l( d9 P) s/ @
]
1 b0 @( o  S+ T4 ~let j 09 @) y; ?- l/ S2 e
let note 0
1 i/ p) i$ S0 bwhile[ j < people]5 i- ~0 r; F) f( L6 Z
[
8 D: v9 q8 [: s. {6 D. O/ z* w! b  Wif( length (item i
9 K: y' p, V* }$ ^8 [# u/ ?: ~[trade-record-all] of customer) > 3 )

) \4 T' W; _: p[
$ X& M: ^; m. L9 ~  Q  @4 Z9 _/ _ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( B3 b0 a- |) Z' t5 W% j7 \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; |) N8 B5 q' F" a% X" w0 g[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* m: s- Z% A" }3 p- v. I8 G% ^6 F
]0 W/ F& r0 ]9 }! I. \  u
]" e4 N& g$ b; n/ Y. K- V8 J
set global-proportion note
6 l( e2 Z; R& i2 Y5 F0 A# c) p]: }( F4 d9 S" S( t$ ~; _
end$ i3 s: x3 X1 {6 b3 C
1 R1 _+ n) I9 S( b4 D
to do-trade
* \( B7 e$ K& b, j2 U0 O( };;
这个过程实际上是给双方作出评价的过程
) Y' a2 s- D7 x# O( Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) k0 w: F7 Q: {7 C$ G2 D& Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& V; ]' Z! z- U* o# }' u
set trade-record-current lput(timer) trade-record-current  [3 z$ m. N! U" X. E
;;
评价时间) v% a, o0 V- [8 G+ e" Z- B
ask myself [  V7 d. F6 ]0 R. N3 B* d& J) b
update-local-reputation
) V2 A% k$ J, N  [set trade-record-current lput([local-reputation] of myself) trade-record-current
* C) A! n$ q: m$ v]
; p) N! f9 W+ l- Y# i" [set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. D9 l8 ]! Z, z' ]" _4 C4 W
;;
将此次交易的记录加入到trade-record-one4 V0 \3 P, P4 A3 ]: T
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 o. N3 }+ G- R9 a  f3 J$ w% c
let note (item 2 trade-record-current )
  C$ n3 k) n/ V/ Rset trade-record-current7 V5 {- H/ J! Z: g, _
(replace-item 2 trade-record-current (item 3 trade-record-current))
7 o8 o( x  A! V- v
set trade-record-current5 {- ]) l3 n" b8 ^
(replace-item 3 trade-record-current note); F6 ^8 y$ a: Q1 G

$ {) c1 S: s$ Q6 I; U4 q/ l
/ D* t, m' l  B1 j% H2 Z
ask customer [+ m; \* l1 i* T  Y1 _; {
update-local-reputation
2 M  ~( _$ Y# m8 oset trade-record-current4 @* d* e3 u- W6 F9 O7 ]' ]
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 o" J# d* v6 J# s]6 }" _, u& v% J% i  @/ E

9 Q) R; Z* O" v

" o  J4 m; q5 E  Z/ Cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! `0 H* \0 [3 Q

/ R' p9 J0 h/ I* k3 qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, {6 u; @, ^4 p' f+ {, V;;
将此次交易的记录加入到customertrade-record-all0 w8 h( X& [% H
end
5 R1 H+ a8 O/ E+ r1 ]/ a; `
" P. I) ?7 |+ b2 c" n  E- uto update-local-reputation9 a  i, c4 f7 Y
set [trade-record-one-len] of myself length [trade-record-one] of myself9 Y4 {+ _- a5 F& \* T3 l# {
) u! M& p0 f" R& @

/ i  m5 Q& L( C6 [7 u' U' Y9 D;;if [trade-record-one-len] of myself > 3

# g6 z6 W1 i+ @2 W0 v# ?- s1 ^update-neighbor-total* ?5 m2 O6 ~% b( @" E
;;
更新邻居节点的数目,在此进行
' ~% B$ G: h( ]let i 3
' {% [2 G* U0 ~/ I9 a4 Plet sum-time 0
8 V8 {$ r, ~/ M9 |; \* D. l% cwhile[i < [trade-record-one-len] of myself]1 S1 L, u3 T" r! G% ]& i- O& t
[% {+ ?+ @8 }( \5 [- X
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, [0 r5 E5 d3 ^# ^: u! H" l- ?set i' `* e9 n! ?' J1 R3 n; g) H
( i + 1)

( j# a+ z9 ?+ P- [9 U]
0 k! O# s3 |% K  g: alet j 33 }/ t# s6 {7 @# y' ^# s, ~
let sum-money 0/ J) H5 @4 G! S' z
while[j < [trade-record-one-len] of myself]$ O) V) A9 ~. y- }
[
4 E: R- o& N, T$ t7 qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
! l( X; F, z9 K4 F: [9 V) Yset j
# m: k$ u! b0 E9 [( j + 1)

7 C2 a8 I# h4 A]
/ V" r. o9 O% v$ G, rlet k 3
  Z% C$ P# u# p$ }; mlet power 0. @9 q! d2 r& u' {/ W
let local 0+ P$ y2 R7 C: ]; Y+ l7 S. T# q" T& _
while [k <[trade-record-one-len] of myself]
4 i; v* H5 N6 ^5 I, S[. V7 C9 `& B; n* n
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) 6 b0 O4 h! g( K) o" B9 [) c: ~
set k (k + 1)
3 a4 z* r% P( P8 d$ R5 U9 d]
8 \7 x% U6 C* s: u( s  Eset [local-reputation] of myself (local)
% Y, K7 t! b# q+ i( ?8 `end
7 b* D8 w$ G- \7 f( w
) ^7 A, [* B9 v0 S. C! K! _to update-neighbor-total
# k0 G$ d" @0 i. {/ p3 V- n
% K1 }; R, [+ I8 o" b" nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  U* ~* e) U# {( u
' S/ N8 f( G5 b+ O* Z$ ?7 D
" ?+ E) f! A" p
end+ U4 V# |( z0 c+ N' p' u

: @6 e) l( ^1 ^! Nto update-credibility-ijl
" a1 g4 o% k' l7 g. O+ H8 P# q+ c  W; _8 {  w" {/ p  m
;;
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。/ f% k4 m( [$ _$ D6 l
let l 08 w: I6 |1 U/ e/ d* R# A
while[ l < people ]4 _- b% G' V' K
;;
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
2 }2 t7 v$ u9 l3 X( a[- ~* k& g8 T" ]( u- t1 _0 Y- g3 h, {
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)( p' J1 m5 E& v; U# r
if (trade-record-one-j-l-len > 3)
% }+ Q* S0 E1 }# [! |[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
3 U; R$ ]) z$ Mlet i 3
& \" _, z" h) {( B0 tlet sum-time 0
6 y  D6 ?  V6 p9 {$ Jwhile[i < trade-record-one-len]
4 M! u& }+ _' t; ^) L[
5 x! J$ o2 I6 K: cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ u2 C  f2 g6 R( s# w7 oset i( b7 u7 D" v& @5 a3 b6 V, h" k- H
( i + 1)

* U  R' {5 P, R6 s: p0 w6 Z, d]) c* T/ i+ B" z. b: M
let credibility-i-j-l 06 \  ?8 y( R# V5 _6 f; n! r3 A
;;i
评价(jjl的评价)3 ]" A% Y$ G; @
let j 35 o/ t$ [4 w2 F2 h
let k 4
( U) C) R0 n* b6 r' w! n* U" pwhile[j < trade-record-one-len]
! `! Z$ R( b9 \8 D3 b3 M9 w3 S# o[& X% A6 @! a( B2 u! O) I3 O: Z1 ^
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- g5 a. E7 I+ q/ 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)7 e7 G$ z4 N5 L7 s0 @
set j. P) m  |7 j5 {5 G
( j + 1)

7 b/ r, j, [) m; @$ K2 c]" ]: W( a  V! f/ t
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 ))7 k$ o, `9 r8 w1 d

, }. N2 [& a- A
! K3 E1 _& K0 U
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- g) t4 ~- I" d  z' q8 q1 C' B% M5 [5 X" y5 d
;;
及时更新il的评价质量的评价
3 K5 i9 k, Q' U, o- F; U9 A# _& hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: ?" v2 g- h7 A& T! e1 v7 f3 \set l (l + 1)
  a/ p, E) G! P5 y7 |9 C]$ s  `# D4 C+ |. h! G+ d$ Y2 E
end8 Z. m! m, i; ~; k* _& O. f

* ~) `0 K. j# x' nto update-credibility-list+ _" b* Y% ~5 w+ Z% [$ Q
let i 0
$ h/ G7 c2 B) {2 n8 awhile[i < people]
4 \6 d0 n- C% Z+ g[( ]$ y4 T9 j& t, m
let j 0
) N7 a7 Q" o3 [% F1 x9 s0 X* dlet note 0
) ]$ _* K7 B+ Q, `2 i$ xlet k 0
% g1 Q8 w6 r% x% [$ `4 S! i+ M;;
计作出过评价的邻居节点的数目0 K$ [) T+ Q& F% P+ y1 D3 S: L8 [
while[j < people]
1 ?* M3 a5 j' T" l9 C0 T9 ~[
6 y; _7 b+ G/ f+ k& ~if (item j( [credibility] of turtle (i + 1)) != -1)
* p8 c8 r: G! V* q;;
判断是否给本turtle的评价质量做出过评价的节点; k$ V- m' v6 e$ |. R3 C9 X- ]
[set note (note + item j ([credibility]of turtle (i + 1)))7 m6 u4 b+ n+ X8 o4 X/ |
;;*(exp (-(people - 2)))/(people - 2))]

: C0 m' V( E8 Zset k (k + 1)
" _: V& t9 ^- [8 j, M]
# m: c) P/ L4 x' S- x: D) |8 Dset j (j + 1)
4 r! M2 G; l/ H: q5 |]
" `$ W/ {( A9 l5 @: D0 iset note (note *(exp (- (1 / k)))/ k)" V- y' j% }  f5 D/ O3 Y! w
set credibility-list (replace-item i credibility-list note)
2 r! x1 d# V! A9 Fset i (i + 1)
& z4 H* D! b# M9 R/ F]
9 B# C% F+ |; x( k  s! xend
% O: s: n) @4 W$ y, V
! D1 t! ~# b( k1 C. X, [to update-global-reputation-list
4 t8 s% ^% l9 Ylet j 02 c) H0 j# i3 D* ^  |1 B( P: \
while[j < people]4 S# Z* p1 C1 I! ?' m% ]0 k
[) Y5 y3 k! O) \! f& G7 m
let new 07 `: \# |9 y4 x
;;
暂存新的一个全局声誉. A' W% ?; @; n; Y& H# I3 Q
let i 0: x$ V1 b0 w9 X9 I; m& `
let sum-money 0  ~4 q  Q. p5 j
let credibility-money 0
9 ?* `8 I9 |! A& b* Vwhile [i < people]+ V7 _; d4 q& C& x. ?! z
[+ F$ m- s9 s5 Y9 B" n& q5 B# A3 [
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), v  T! R/ `8 d6 L; g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ w: C9 ~3 k$ A* m: P8 `
set i (i + 1)  p" D) B2 g; r& h: r( @+ z( D
]
% s& F) s" D8 [3 q" q: tlet k 0
8 `* k% w5 R* Y% ?# Q( l' Elet new1 07 V* i: D8 R5 w" d8 T
while [k < people]
$ B5 f' Y5 R, @$ |9 x  C1 h* J[8 i3 O8 ^. ^  m) H
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)
+ I6 y, E  r. D% Z, d; Vset k (k + 1)# B( _) R, G6 X1 s
]! k# R" ?( C/ j8 Y. q8 n
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) a0 ^7 W) G1 @9 G. ^/ t7 ?7 kset global-reputation-list (replace-item j global-reputation-list new)6 p& j/ J0 x  D
set j (j + 1)7 W& `' S3 `4 [4 @# g7 s  T2 o) ]
]
7 b. t* Q0 w' l4 I/ jend1 P, R0 r9 s' G% b
( ~8 D( b2 l+ F2 z, P6 a

* F1 r$ X6 m5 ~" h1 s$ A2 O( A; h) G+ D( G, F4 K. k1 j9 P
to get-color; f( S3 E' u( t/ i; T

6 I7 ?0 h1 q- t6 n6 H# ?set color blue
; d( Y6 A8 g5 G2 t
end; p+ S# L; F- \" v% F# Y
0 T- w; L5 @& X0 R; @
to poll-class
9 K3 v! d1 |( Nend& F4 b6 I" Y$ D% x, q

4 |( T5 f+ B+ M$ i+ H( r- h- gto setup-plot1: Y* S9 A5 x# Y* w6 I8 P: d
6 y4 G: n  x' t9 O
set-current-plot "Trends-of-Local-reputation"

3 o, U7 G, \7 u# z+ u2 m9 H- q( l' y+ s
set-plot-x-range 0 xmax

: h6 }; F& l9 I3 X" A; I" S4 c6 h$ w/ C+ G1 |, f" F! k3 R& [) r
set-plot-y-range 0.0 ymax
! W- w. A- y; t* n* h% D) i, a9 |
end, \7 z0 y6 O0 T1 T) T) V, i- j, R

1 g( r+ ^. q5 Y0 W7 mto setup-plot2+ R( _# O( {. o7 Z5 n1 V; q. N
# t" ]2 S: N% s9 o1 q
set-current-plot "Trends-of-global-reputation"
) d/ o' G/ m# X7 L: u

  c2 M" N7 L+ }) d5 Lset-plot-x-range 0 xmax

% ]  e: T& r  |
% c0 F# q, X: W5 Yset-plot-y-range 0.0 ymax
8 L9 U9 {+ e% n/ r+ v* o: h
end
/ o7 B0 W/ p, C( p  h. x3 |2 D$ J* f  v# P4 g' r! Z
to setup-plot3# ~0 \' F" h) H! j6 t' g
" m& W* Z- a# ~9 `7 x  q
set-current-plot "Trends-of-credibility"
1 y- C9 I, v0 m  L% E  X
: O9 x7 x% |& u7 s' U& V: Z+ o1 `
set-plot-x-range 0 xmax
/ V3 ?& X, J/ ~% J' m) E

) V# X+ u( z) fset-plot-y-range 0.0 ymax

! n  c! T- ~/ J$ yend
# O  C/ `. ?4 X) O  B
* ]4 K" J+ K* E. Q$ n) G: Fto do-plots4 C: `6 y* |& Z8 ]+ y5 b
set-current-plot "Trends-of-Local-reputation"4 E/ U" Z5 V# g* d% Z! g6 S6 y
set-current-plot-pen "Honest service"& i  g* [" P% G: x9 Z; I
end
7 |. T# z. s  J5 G9 m6 E+ z* Q/ r. z' _" x4 c
[ 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.& Z; m! l( f( ]$ G: ^
! j" C6 o4 y- z
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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