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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:
8 L' x* N" Z# D/ V4 Eto do-business
& @4 d8 q& g5 M% z7 | rt random 360
3 L3 G! a* {! X1 z- @ fd 1
* R* D- p' o0 K) L( m3 f ifelse(other turtles-here != nobody)[6 t2 I. d, O5 G, B+ N* J" V
   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.2 t- z1 X7 S" z9 X' a
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( P5 Y2 P: v- i8 a. j   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% d( w  |9 K# ~1 R9 [   set [trade-record-one-len] of self length [trade-record-one] of self
5 q/ D( S' }' U   set trade-record-current( list (timer) (random money-upper-limit))( z3 A5 T" Y- H5 Y0 e$ i4 Z0 N
! q8 y/ U; W, i6 I# m7 S# O+ _7 s
问题的提示如下:# O& e4 t1 ?2 t+ p% l. }

4 V" x5 X, w4 R- i* l. K7 ferror while turtle 50 running OF in procedure DO-BUSINESS
1 z$ X9 n5 B& {) f) p. O/ k# Q  called by procedure GO' E. U4 A8 `5 ^/ ?$ }! S
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 Z( f  ^9 e, K/ P  F+ G
(halted running of go)' F3 c( p0 S- [; L. `( K7 I7 X

' y( z! k% _0 I/ 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~~
, ]0 H4 F1 Z: ]/ U2 Z1 v1 F( L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 B, M8 a" T( h  q) wglobals[
) D) c/ X, U6 _) z$ Sxmax! @4 E: Z, {4 Z) |6 K8 i9 z) i
ymax
8 A8 W5 f6 T% `# [global-reputation-list3 f( G. W: C- h4 S! b+ m" m

7 p. G# M9 K- z;;
每一个turtle的全局声誉都存在此LIST! k+ e7 b0 }2 N7 R$ d! |
credibility-list. h8 E1 k* l1 k- w1 m$ x
;;
每一个turtle的评价可信度
0 F, R4 S8 F8 Y$ D7 h; Zhonest-service1 I$ ]9 F6 K8 d9 |4 u% @: i1 v
unhonest-service; a* U2 i9 \8 X% r) I$ J& D
oscillation* Y/ u- o7 n3 P; M3 E5 e( i
rand-dynamic6 o+ E# L- O$ c1 [7 O
]- ?" L! H, e; R- f& n  i

" L" V. b9 x9 c* K/ O# K' W! {turtles-own[
/ `3 E! @+ ~6 _3 j3 Ntrade-record-all
% \7 B2 M' K8 }, [* n;;a list of lists,
trade-record-one组成
/ q4 u" Y/ ?( s6 @2 W) H% \trade-record-one6 t/ i% O' H; @1 K5 r7 k7 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
( ?& z4 d9 }+ q4 m! g8 r' H9 i, `
;;[
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]]
8 k9 N* J: ~: v0 p# `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]& G$ D# E. O2 c' @
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$ K( i" X) \6 c: p  l+ H1 ~
neighbor-total$ [$ T: s: p/ ?7 O) A$ q' g
;;
记录该turtle的邻居节点的数目' j2 x7 U; [& M. d
trade-time) V3 \/ `* x- ^
;;
当前发生交易的turtle的交易时间0 A! K- `5 Q+ c+ O) C/ p/ ~
appraise-give3 k: @- `( Z9 G+ F* ?; {
;;
当前发生交易时给出的评价
" o& O; Z& G9 W1 qappraise-receive
( Z, J1 Z/ P  B2 F; B9 n2 T;;
当前发生交易时收到的评价9 u/ U2 [" _$ @4 B9 n
appraise-time
, }5 U1 H! U  f0 j) c/ ~;;
当前发生交易时的评价时间: X+ u0 {+ t8 y' {; B8 F
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
' h# j6 P; K. P8 Y: a5 [+ ctrade-times-total# o# X9 u& Z$ l' g
;;
与当前turtle的交易总次数
; H3 X0 h/ j! V, G' Mtrade-money-total
) h* m: I- ^: y8 I5 n% a3 S6 L;;
与当前turtle的交易总金额
: E8 T& p# P5 L% Vlocal-reputation
5 d) H% e# ~0 Z/ Vglobal-reputation' j, f* G  a$ h5 `
credibility
; ~( i  b, o8 I$ |9 ~* D! m;;
评价可信度,每次交易后都需要更新
5 q" _) y% w9 ccredibility-all5 F1 \( \9 L6 j: n" t, e0 b* _
;;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
$ F1 {# ~  l( U/ b, I- o! E& [- f( `( ~0 A* O/ ~: g0 @, k
;;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0.53 b  S$ R& }* J
credibility-one5 r$ L9 {, `- H) H; u
;;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/ ~5 R) [2 g4 q% M4 H% u1 u
global-proportion
9 n% j* w. e5 f0 Pcustomer- Q! l8 p1 t; O, p! a' C: Q
customer-no
; M# j/ L) S. ]+ l/ _trust-ok- [9 O0 g1 |. ]0 d
trade-record-one-len;;trade-record-one的长度
' e3 T9 L. o% w) k]
7 u1 h# m( I* Q- K* j
) F+ E% I& k/ I+ [  O;;setup procedure
, F$ S6 x5 v/ S) v
* _2 @, j/ c3 j& F# ?  _* e0 A9 Jto setup3 w- Q0 M  Q; y3 h, @
9 }2 N+ K; x3 ?' ]. K% T
ca

) N. Z+ _) R4 y! M/ b; T: G( N8 a1 R) ~3 d8 G5 a4 u2 I- \
initialize-settings

2 ^- J1 g4 _3 r5 ], t0 t' E, N
5 q! P$ h" E6 m  ncrt people [setup-turtles]

1 Q( {2 Q: K0 }3 M- D( p7 u# C. d
0 F( ~7 F% Y9 r5 U+ sreset-timer
$ y% v, p& E; w. R

5 V2 Y9 i5 d& X* f6 v8 hpoll-class
6 L5 f2 O& s5 E  ]! H
9 D5 `; \' H8 f* I3 j& ~: @
setup-plots
$ v0 V) X9 u6 f$ @: c- ]
( ?- a9 i3 j- S* v. Q3 R7 b& p* v- n  u
do-plots

! _3 N; J$ R7 E2 Z' P/ mend
  S) g; R( c5 n; T& p' c7 I% _" m, e8 E
to initialize-settings' d; |) c* V, F* H$ b$ |) g

) V' R' l4 |3 y. u5 P# rset global-reputation-list []

6 w% a- y" L& y& S4 L' _* g5 I" o- E9 j8 U$ ^2 w# n. j/ T; M/ W
set credibility-list n-values people [0.5]
$ x8 a: S* [; s/ S4 K* s3 k" ]6 `

* I: t5 P- d8 D$ {  ^5 a  T8 k* I0 S0 }set honest-service 0
) h5 O! h( i2 b5 y$ r( ~

" i+ c; P, Q) Z% l" @set unhonest-service 0
* I" L$ v3 i  y0 l+ R) Q
3 b" B9 a2 L; O; F& s' v8 S2 N: W
set oscillation 0

1 I1 _& i# G" j% g1 R( Z! Y$ c' L! z' Y, M2 w
set rand-dynamic 0
7 e' q) M) x- Y! S; e& s9 {7 {" J
end, x5 A! a4 d$ u- |7 h+ ~3 o1 n& w
' E" H( j; Z5 U
to setup-turtles 5 Z: Y/ N1 z/ N  v$ R
set shape "person": c* L; H. ~6 {4 }
setxy random-xcor random-ycor, ^& ?& ]$ [/ t3 j1 s
set trade-record-one []7 Y: {4 l- e( ?) I& v

" P7 j7 c: Z: j$ Jset trade-record-all n-values people [(list (? + 1) 0 0)] 2 d( c6 f& b/ k8 i/ g8 F, y

( x5 B- ]/ M+ ?set trade-record-current []
8 G  w$ `  G! R$ I( P4 @8 Dset credibility-receive []
5 g& G% N4 _4 Z, _1 cset local-reputation 0.5
5 d; Z) `) N8 D' R% Zset neighbor-total 0
2 ]8 B0 O3 ~$ l$ K, U6 K. Rset trade-times-total 0
5 R& ]: W0 l# P/ D6 o3 B7 w* Uset trade-money-total 0
. A# W4 _3 ~8 H) Z  G5 iset customer nobody
2 E; ]3 R1 U4 O( M+ `+ Yset credibility-all n-values people [creat-credibility]0 o- I# r; Y% p% t7 _- [
set credibility n-values people [-1]
+ ]& P% l, i" q- U9 hget-color6 P8 n7 o" V% t! s+ ~$ w- {1 w3 \

( L7 G  k+ N( d5 q; b3 p# P6 x1 @end: b) |0 U' L+ `0 ]+ W8 c7 f1 l

' m- M0 b. _. Y0 }) Rto-report creat-credibility
" T- L  \- S4 k6 freport n-values people [0.5]
1 F6 j, K9 R- x; Tend5 b0 ?) x3 u, ^. j- e# Z* J! ?
' v4 @% g( e- e/ e& i
to setup-plots. k" X( d; }" Y" L3 G- R# Z

# d( t4 ]- R/ T. ^set xmax 30
4 |8 }) |8 b' c# B$ [. p! w2 N

9 t, E6 y7 O' F( }; u, \set ymax 1.0
& X7 f( A! A. b
5 T3 T  s' v3 S. z0 F9 o% w
clear-all-plots
, _8 \8 ?3 H4 E8 h* b7 K5 b3 V

% W% a; X& V5 A" N3 Asetup-plot1
" I$ w, H( j+ h$ I5 W, w

' ^* H0 \" v) n7 ]5 m5 Qsetup-plot2
# c# F& U4 {3 I7 V; t8 g
2 K! w! H, a+ V9 v2 i
setup-plot3
% d' q' q+ \. x+ R3 i9 t
end, O3 x5 o6 S# T( h1 d- p1 Q
8 E1 [+ P0 O2 R+ g. D9 i
;;run time procedures
; b2 D0 b$ H' \- {% j  |
2 _( X; s! ]. q+ t; bto go
+ t0 i: \* ~/ e9 R
' S+ V* g/ Y$ }5 |& ?ask turtles [do-business]
) H5 `' w. R& ~  l' t
end- m) O, y" m0 y4 ^8 k/ y' Y! e
0 v' ^& [8 Y4 W( r
to do-business : ]) {4 f) i6 G6 |- M
, h8 D+ a, K  U: T) {/ C( w
) P. {0 c1 P8 k
rt random 360
" H% I' {1 }" k4 [. H
8 }+ G! y8 u) t/ Q( d" A2 z& \
fd 1
1 c! S* A! a1 Z, k
4 x) W; f' U1 F! z' N
ifelse(other turtles-here != nobody)[
  @( G0 `+ F7 E( a4 M$ P! g# @
) M8 O, E2 h5 u$ X" p& F$ |' L2 O
set customer one-of other turtles-here
7 a8 N& X1 S- W! V
$ e3 w) F8 W* q; {3 n$ U8 Z) Z' ]
;; set [customer] of customer myself
5 P4 b" }( C  w1 Q* }; V" x+ \. y

! O) ~* }6 h  L  q' r* Wset [trade-record-one] of self item (([who] of customer) - 1)  z9 Z* q' U2 V
[trade-record-all]of self
# G( Y1 I9 N- E* J$ F;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 F6 t/ h- i+ {( \, W  Y' i7 z1 C& L# R- w* [- V
set [trade-record-one] of customer item (([who] of self) - 1); ?/ |# L* c- \' F2 p
[trade-record-all]of customer

9 F, M& M  V" d. [& h
, V+ L# l3 t% F8 ]4 L/ n! I! Z4 bset [trade-record-one-len] of self length [trade-record-one] of self

1 [, [' @2 ~+ R' ~7 F% X
2 }0 ?, W4 T$ `set trade-record-current( list (timer) (random money-upper-limit))

3 a* U3 N; P9 x) {4 V1 `" x+ R; [8 r1 L( ?! u* g
ask self [do-trust]
! m/ f4 K: W# J7 B$ x' {;;
先求ij的信任度2 r8 ?8 ?' m$ Z! t& B

- i1 e/ w2 Y  C( u( [7 j8 g' I/ dif ([trust-ok] of self)' ?0 X& S8 \: \% z* S: I
;;
根据ij的信任度来决定是否与j进行交易[% ?+ ~, t4 ?( H0 L& X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! ?- \# h( H. Z. }. ^& n. E1 }/ Q

9 e/ P9 i1 W- t* P3 N[
. V+ z6 `" R4 j1 x; [1 N# s& l6 r

  p& g! w1 g8 s3 n, A+ Edo-trade
7 d2 I! M' }8 [5 D6 R3 M5 R0 G$ ~
4 `4 S7 M$ R: u# v) Z
update-credibility-ijl
  v1 Z) o, o5 |8 m- o; j! K! Q

* ^  l( d4 m/ ?- n& nupdate-credibility-list
+ B8 m2 i9 R! F# X' q% P
# B( o. ^. w7 \& [5 l2 M. X
0 F2 R1 o  [$ U) _1 ]+ L
update-global-reputation-list

; p. a& W) ?- C( x, G9 v' _
6 M' v0 ^5 J2 |$ Rpoll-class
  W9 a) A% w6 l/ F0 o3 C

- v5 P$ ^" l4 ^, j5 {7 E9 F  lget-color

( Q) M8 }( ?5 U9 B+ p
. t: C+ G4 d: n' ]]]: R& R/ W1 G9 \; r

; s) `* K5 P* I6 [5 G* t;;
如果所得的信任度满足条件,则进行交易) a* m! b5 R5 f. J

/ o. |& c, b) K8 l* |[
( F$ U0 L/ k3 a' q. F6 l2 k+ n
/ i" l" {, |. _; G: O3 e2 o, x
rt random 360
$ B, s. [  o& s/ |% a
. v$ H/ y. [: N. o8 ^- t
fd 1

% J) h& I3 Y7 S% `' x
1 E1 V# N/ ^$ p3 R3 e4 ^' w( e]
/ X3 B4 z* f1 D8 T* B

! p- N2 S: @: W) v# p6 hend
3 T7 K6 Y: u4 F) L1 b

( R$ Z, |0 v, K5 Gto do-trust 9 k! a' ^$ r$ [, y, |" Y, F7 j
set trust-ok False
. v! E9 |% r# C0 J6 `$ A% M7 y# s6 n' `* p0 f( @
6 e% ?2 {2 \  z
let max-trade-times 0/ K8 |3 K0 F& w1 r
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 N/ [" u7 C' klet max-trade-money 0
5 ]" h% M# Q' b! \/ sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 x7 T" U" F) n' @
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" J5 p+ M6 x$ u1 l

, |5 b* q" P. Z% i: J

# Z1 T6 b& [, g! f; X" A, Oget-global-proportion
& V: a1 o% n9 K0 g" [5 t9 t5 Plet trust-value  V0 ?' q2 f, J: W8 m
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)

- Z' k% E( O0 Nif(trust-value > trade-trust-value)! q) U0 T& \$ u; o( n2 Q9 x
[set trust-ok true]
: z/ G6 G% X2 [4 lend
4 N- ^! @$ q8 f0 H- l
$ T3 L7 u) c9 O7 [to get-global-proportion
( v! D/ J" y) [' L5 j4 ^ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 ^+ [. W% g. ^8 J4 ?" i) H
[set global-proportion 0]" t& J0 a5 O0 m  j5 A  {4 Q' w
[let i 0* ~  z) ]# J5 b- u: I
let sum-money 0
! _  I  r5 `( b! wwhile[ i < people]/ I  v8 B. @7 b. X; U2 e$ w9 l# `2 {
[! _* L: U$ W( C  z* t9 j# x
if( length (item i
, V+ R) |3 @2 h+ |+ z[trade-record-all] of customer) > 3 )

0 w1 D1 O% _. }[
3 E5 d. j( P  y3 @8 Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 _" n/ I$ @4 v]
; Z& o  B) D+ A0 ^% |7 E6 {]8 F; }8 K5 K0 O: b
let j 0" R! f# z, ^8 C3 j+ T1 D
let note 0
* m5 Y* G# H0 g2 T1 [  Kwhile[ j < people]
& J- p* C7 s- X& _0 a5 ^; x- i[
+ J% J  H& O2 y: Y: @' w8 Uif( length (item i
: ~" j% e7 x) G% h0 c/ Q[trade-record-all] of customer) > 3 )
! @, L! m2 y7 f0 K- f1 e5 P$ P6 L
[8 I6 e  _7 u- Q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 `6 c1 @* {( I# J4 }0 y# m
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# I& H1 }  R- Z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  v/ V2 _# K4 F4 Q/ d7 T; R]4 C7 T! _' h! Y' T9 \, B; g
]" }  f2 U" y: K
set global-proportion note
! [3 z4 M1 V$ u  d+ Q2 ^, P# x]
- {1 T. e9 R' _1 T; @, J( R- Tend
% Y, o; M  X: ]; }; j% [: C+ Z0 A! V* M; V
to do-trade
/ ?! I% g* \: [* z" O;;
这个过程实际上是给双方作出评价的过程* t* v: K% c* a& }5 W# Y* b  E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. C6 p* a1 N; |; l# ?9 T1 lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( V' {, u4 v+ x) Y; u1 w
set trade-record-current lput(timer) trade-record-current
. G9 {' }; y% r$ k;;
评价时间" s: K- q; O9 ]+ ^; Q5 J! n5 H4 G+ E
ask myself [6 I7 T3 T8 b: U; i3 D, E
update-local-reputation) o' w+ }# w! B5 G
set trade-record-current lput([local-reputation] of myself) trade-record-current: I& H# F+ T/ ?4 P. |1 T! y" G6 q9 s
]
" j. M/ `, J' K/ y( Y% [set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 x+ ^: _$ G7 P, @
;;
将此次交易的记录加入到trade-record-one9 O( J- G$ c) E1 a% O6 K
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- E" D. u+ L, Qlet note (item 2 trade-record-current ): F! |. t" h( ~1 r2 L: ~6 G+ M: M
set trade-record-current! F# ]: f( r! K! I3 ~$ l- ~7 p
(replace-item 2 trade-record-current (item 3 trade-record-current))

& W( S; ]8 V6 W4 Hset trade-record-current
. y) F" |  b) p0 j( `% [# U& Q(replace-item 3 trade-record-current note)' {' `- z. X9 D8 Y7 K  }* f4 x

: o2 @: Y4 C) o# U5 n; |4 T

$ F6 E) _; A% W6 oask customer [
# R. g5 \* p0 ~5 v2 K! i/ o4 g4 Aupdate-local-reputation
' P1 U' L) J% |% U" [5 tset trade-record-current/ G9 v* W  b5 D! }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 D7 y- Z3 S- J/ ]" u  H]
- M4 _7 O$ e& `2 R7 H" q* N% H5 E/ t* h  y8 g/ s+ B, w

+ ~: _1 i  e0 i- D* mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. H/ i7 r: W  t% R, R3 @
% g5 x+ X+ K) W" ?( z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ a6 H1 ]+ o3 H0 l; ~
;;
将此次交易的记录加入到customertrade-record-all  Y) f8 q: `( _, B4 C+ I1 x
end5 ~4 B6 Z) J. o8 `; X+ n

! j# A, Z. M. Y( Dto update-local-reputation
, v3 p3 ?4 q! l& V' Q" }$ ^set [trade-record-one-len] of myself length [trade-record-one] of myself
* q+ P! U" P/ p$ Z0 |1 r
( o$ J: _. m" T' _% G5 w' n6 e8 D! W% x+ q) D( |
;;if [trade-record-one-len] of myself > 3
% ^" l0 `# \$ T. U0 U! |) E
update-neighbor-total% Q9 W4 Z+ D8 e0 H& g- y
;;
更新邻居节点的数目,在此进行
5 t( q4 k. ^# g; ]5 clet i 39 s! A# \& P% }3 H( D4 X
let sum-time 06 \* A- D7 N0 _! a1 `
while[i < [trade-record-one-len] of myself]
; \& o# Y# J3 f" w4 ][
( t3 {6 g! D6 G# z9 P# N" gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% M, T+ M" I1 b, L
set i. W/ a1 J- x( l1 N) O
( i + 1)

0 p$ n  E  ^6 E& w0 {* {5 @]1 `7 O1 G8 x7 S$ t+ l: w6 l
let j 3
' Q2 E6 q/ i. z& ~$ Ulet sum-money 0
* s+ J4 Y. w! M' e/ Uwhile[j < [trade-record-one-len] of myself]
/ z9 W5 p- M$ g4 U* F* g[7 I0 s# {+ W. v) B2 I$ p
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)7 F" [0 w- m( B. V
set j) V$ G! C: k0 _' `- ^7 v
( j + 1)
0 r/ T0 S3 l; m
]
$ F( n, X( o' d0 W! V( u4 Flet k 3
8 k2 t/ U. f3 l6 nlet power 0' r9 s3 ^% F: E. R  S0 g0 i
let local 0/ _) [) z# g& O
while [k <[trade-record-one-len] of myself]
1 |( t7 r8 C+ i0 D: j1 ]$ H1 T[
8 X* }5 r: q& v7 s: Cset 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) * P; @* P( ~3 Z$ B
set k (k + 1)
- Z; ~3 Y8 I* I! d]
3 K1 i! z# H. z9 _2 {+ i" pset [local-reputation] of myself (local)6 F5 g3 H  b; a2 g; B% G/ \
end
; F& u; Q2 z9 |: ?. C1 d* F6 @2 i& ?/ _( B2 _0 p
to update-neighbor-total# r" h4 Q9 B4 P3 h
% E" i5 |! ]% a! D' \" L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( E1 |5 E' u7 G, t& H0 T2 j/ ^
- x2 d, |9 `( p& S' ?/ g( g9 B
) b  ^; k  R7 W) s
end/ G5 c6 ^) {1 U4 Y2 x( l' y
0 P" R4 k# C+ Y
to update-credibility-ijl . n  D' u3 Q. d# B  \

, t2 w$ ?: K7 A  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。
* j" w2 H4 [9 [+ |6 jlet l 0
; d+ a  m% `( ]' Uwhile[ l < people ]
' N8 p: f  n% A: P- o;;
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
( ~8 g8 s5 \/ d+ K; [* a! i; o[
& |# ^2 u" B1 E* flet trade-record-one-j-l-len length item l ([trade-record-all] of customer)! a5 Z- m- O5 G8 P; |7 s  {
if (trade-record-one-j-l-len > 3)- x3 |$ [! U' _/ o
[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
$ ~5 K" c! |& K5 _let i 3, d+ M% U, w) W0 R* U
let sum-time 0: [6 t5 a6 s/ S1 r2 r; _; b
while[i < trade-record-one-len]1 A! [. q* D3 M% A  p/ C
[
% Q4 o( J+ g/ ^  J6 Oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 @7 M& q5 N. L. y$ w( a6 c
set i
5 i7 g) _; E4 _$ d/ r, Y( i + 1)
# f0 k+ @* G# s& H6 v- w* Q
]$ m2 J9 F3 y- b( t- D
let credibility-i-j-l 0( O0 l" R) B, z1 ]: [4 s
;;i
评价(jjl的评价); h" @2 l6 s, K( h6 ]1 R1 t
let j 3
) P; ?8 X, a9 @7 I* i' Ilet k 4
% P) m/ [6 x! P, M+ wwhile[j < trade-record-one-len]
+ s0 ~4 l$ I! i$ |7 a[6 u5 g4 U3 c, @. L
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
9 w3 j' D7 w  k- m  hset 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)
+ O& u7 D  D% Rset j
! v1 ?; V% p; {7 K9 L9 c1 T2 f; `( j + 1)

, g+ E% Y% w/ A, V]% |2 o4 \" Y! r- a" b
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 ))
6 h: l3 T( v6 j+ ?/ j1 G7 z" l% i
1 G* O$ I& H4 w+ A5 o) a5 W
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ n, M  F8 q5 E& c& _) d4 Q;;
及时更新il的评价质量的评价
; d# R* @9 |+ iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 k% e9 D! ~+ x  U
set l (l + 1)/ w% A! A* y" b) `+ T4 n3 j
]
2 }" C$ x5 U7 s2 P3 |. h8 n8 }. Kend& C, l* P% {: \) Z

1 X8 {& v* @8 w  x: Jto update-credibility-list+ ]7 G: I' ~/ y9 g% D& c3 z
let i 0
# O. z! m6 t) h+ t$ _while[i < people]
) W4 a4 _' \/ O" n7 O[* B' ^. S6 B8 I5 x$ X
let j 0
$ ?/ M: u; q& e: s8 [* Glet note 0
" D( N$ v9 N4 u* J- nlet k 09 F, W4 f; H! O+ ]: W5 {4 D
;;
计作出过评价的邻居节点的数目- z$ {7 \8 h% A( T8 w( Q
while[j < people]( W; J3 ^/ @+ q
[
) {+ j2 k# K) J4 C6 `' Xif (item j( [credibility] of turtle (i + 1)) != -1)6 v4 T+ v3 t7 d. F. ^! F
;;
判断是否给本turtle的评价质量做出过评价的节点! {8 _# x9 j3 d! K# k# W. u; i
[set note (note + item j ([credibility]of turtle (i + 1)))6 H0 H2 l* p" C, X! g
;;*(exp (-(people - 2)))/(people - 2))]
1 ~- J  }- g% s% u. X# Y$ Z' w
set k (k + 1). Z& m4 B$ K7 W% b( c/ B
]
9 K* i9 a3 X4 [set j (j + 1)
$ I0 s% |  o, n7 L$ n]* G: b) J/ x) p" k3 L: r
set note (note *(exp (- (1 / k)))/ k); h! z' {  I3 G# e2 k9 T7 `
set credibility-list (replace-item i credibility-list note)+ o# H/ X' S8 X) o, Z; g
set i (i + 1)9 e0 |$ T" O5 O% j
]8 D, ~' a$ i- p7 g3 n- g
end
; t7 u: X4 `! O+ m% Y7 |, ^5 f. A2 b* a1 X  |3 ~7 ?
to update-global-reputation-list
. ]2 Y. [/ A+ n: ?+ ^let j 0$ s4 o/ e) C# i' W4 M
while[j < people]
$ [! I8 v% i9 c# M[
8 C6 v! l8 h6 e" `1 t1 Llet new 0' n, q& i% t, ^
;;
暂存新的一个全局声誉
9 F0 a6 s" d/ f' ]let i 0; P: G* D. }1 Z* ^+ z
let sum-money 0
( _, U9 [7 [! t0 \: [4 M: ^let credibility-money 0- f" p: c5 f1 m  \3 j  |% @
while [i < people]
( f  V# K, }2 W1 u[
5 F* e7 }- Z* ^' ^9 T6 ]( fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& x: X, t( p) l$ n4 F) Zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): Q8 ?+ r  a$ \" _7 B
set i (i + 1)7 f- P0 y9 c+ V" ]
]- }9 ?- p+ x( N
let k 0
. w$ S' o1 v, D! [& X0 `. rlet new1 0  f+ v" f% p$ u3 P0 \  K
while [k < people]
0 {7 b1 E  }. [! X( K* |[
  G, R0 a; ^1 V1 k6 J5 a7 n9 j4 Pset 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)$ {- Z! M& t# g! k$ t
set k (k + 1)
1 u6 p3 I; s! r' S( M0 u; t]- z' _7 x4 s1 A: G( I. d# t2 U( C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% w$ U, d. V+ z0 v! Pset global-reputation-list (replace-item j global-reputation-list new)
& K  ]: b* P! f* [6 ]- }7 X1 jset j (j + 1)
4 Z: l, Q+ U+ S% d" v3 E* |]
  U2 @1 q; s1 M; @/ _/ G) tend
; t8 e2 N9 F& a# a/ q9 ~4 ^/ {* B

4 a9 E8 y8 Y( |+ r# T7 P9 g) E0 v" U  ^2 Z% m" k4 x
to get-color3 V" ]5 T+ A- C* R9 q, O

9 E) W9 Z* s/ I* j, ^) \1 Lset color blue
0 k$ Y7 a/ `4 k2 s
end
. ?' I" I  t" S% s* e# H  R+ S. r
to poll-class' J  F# T* b6 x1 `4 w. I9 i6 l
end
+ G5 a7 o* E; Q! U4 j+ |$ G1 q+ x  H* [( Z0 {+ O/ L/ f
to setup-plot11 v( \! m, [5 H# x8 |) Z$ r1 {

6 N0 a2 R+ j* e# q* o6 Cset-current-plot "Trends-of-Local-reputation"

- y1 G  u% L" z1 I* U
1 u+ E3 X* j4 pset-plot-x-range 0 xmax
' A, S! M1 b6 w& |

$ |" B+ u: M- }0 q. t: Iset-plot-y-range 0.0 ymax

2 D" X( O+ r" J! c2 [# d7 gend) k7 [/ Z5 B/ s
# F. _* Z% K! j! ]! u
to setup-plot29 Z3 u2 P2 ^" X3 S0 w% E) B9 S
- I+ I& ]7 K- g$ Y! }, z- A
set-current-plot "Trends-of-global-reputation"

# G7 O+ M% b' U+ y& v4 D# j! I: e
0 D% H) T) `# X2 E9 W- Iset-plot-x-range 0 xmax

- S: z- m3 Y* w  s* W4 Z" |) D7 b# V" m2 t
set-plot-y-range 0.0 ymax
( D, S( e9 W6 P, ~3 g
end1 E( H9 r' \5 E3 }' y

- z# `4 a  ^/ P5 kto setup-plot3
' L# o! n: T! P. M$ N
$ N1 n& l6 Y; s& k# R6 Lset-current-plot "Trends-of-credibility"

5 x! N  I% h( E; E( `
. v9 a( ~0 f, J( ~set-plot-x-range 0 xmax

4 L7 `3 X" R' P5 Q& v% r
' U8 i5 S: w9 j; _set-plot-y-range 0.0 ymax

; ?( e! e6 L- e! f: z( {end
; q4 z2 P) q  }5 U+ `* Q$ G( m  g' p6 P# e. z) d( p
to do-plots5 e4 Q: I8 v3 ?! }; T5 \
set-current-plot "Trends-of-Local-reputation"' k& T. q! @9 M+ a; Q
set-current-plot-pen "Honest service"
; a, O- ~& K& w6 p) ^% eend
! m4 I5 t1 T  U8 F+ D/ j; o$ E7 e- B, t$ Q& @! x
[ 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.
0 `2 w4 }  ]% z  F0 M3 ?9 c0 c" k% w% v# C" r
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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