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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:
; w; u( F$ y1 h8 Sto do-business 4 f2 @" j8 ]& D
rt random 360
  P7 x. Z5 a7 M! H# T fd 1
( j: u+ y3 p* Y8 Z8 {" L- k ifelse(other turtles-here != nobody)[
* c2 ~+ l% F0 J# \   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.3 {5 D7 _' Y! v8 D) w
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( W4 X5 ^* ]2 |7 ?   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
/ a7 X" }0 h5 n( w+ G   set [trade-record-one-len] of self length [trade-record-one] of self  F% x/ f; _/ q6 O
   set trade-record-current( list (timer) (random money-upper-limit))
; `! _8 D- B6 W8 B2 t! L
% P" E$ I- E, n* s问题的提示如下:# M+ h' B8 Z1 w% k( {
& |# _, C. Y8 I) J- p" y
error while turtle 50 running OF in procedure DO-BUSINESS4 i- G1 m  k# ~6 e; X$ z
  called by procedure GO
$ @/ c2 L: |- |; p: h7 \: F$ mOF expected input to be a turtle agentset or turtle but got NOBODY instead.5 H/ n; X; R8 L+ f4 P
(halted running of go)
5 e" W7 w5 @6 S2 j1 S- s3 Q# n' w+ V
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~~
4 s+ [1 J0 E0 A3 c# Z0 R: i另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教) @' y% L5 w, z3 O7 \9 ~* F" s- f
globals[. |+ y6 o% P: D" B
xmax, c# b6 b+ N1 y3 i! r8 p! }
ymax
/ N3 j% c% d1 Y7 }0 O  B8 H8 {global-reputation-list% g* T+ }1 ~" c6 S9 w

7 ]. C7 B3 h) q; ^;;
每一个turtle的全局声誉都存在此LIST
  S6 N* a, A& h* t+ }# b& n" Icredibility-list
2 c; m: t: n3 x3 ?+ i# q+ ~4 q;;
每一个turtle的评价可信度/ G% |2 t0 X  S: \$ t' D
honest-service
2 Q. K% [2 N7 r' D2 C, }unhonest-service
7 P( W% o6 s2 `- loscillation
+ X! Y+ q  @# g5 L) |" W: Xrand-dynamic
4 z: I) L- D2 w]" @: X! D$ ~9 h7 e4 Q

' r4 ~2 P% z% ]3 u- Aturtles-own[: T, j3 p4 u; q2 m+ y$ t& S& a4 T( w
trade-record-all- i' V# X" V7 f4 D
;;a list of lists,
trade-record-one组成
8 {4 o; l# e3 @5 s2 A( r' `trade-record-one. Y. t1 Q6 L6 w* P% {* r
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 j4 z, b; U& q) i; n8 u

- R( `/ J  U+ f1 v6 {;;[
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]]( S) q% v: q* w
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]- N6 Q) d# q% |8 G4 i
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/ I7 Z6 f1 g2 @/ Z7 n2 u
neighbor-total  O# I( R1 I& X4 O
;;
记录该turtle的邻居节点的数目) O+ Z. R8 W- p
trade-time) |$ C! ?- s. g2 z7 f5 _( w
;;
当前发生交易的turtle的交易时间: u* `5 |5 N+ |
appraise-give
1 ?8 V2 E. q' I- G6 K4 I% ?;;
当前发生交易时给出的评价1 N; u: R% u/ t# n2 K
appraise-receive1 e6 p7 Q6 t! d/ \! p7 z$ t
;;
当前发生交易时收到的评价
  u. _" {4 T! c( M0 dappraise-time) i- e! d# f6 Q5 i! T+ w
;;
当前发生交易时的评价时间1 S* Q( y0 P0 m6 W! e' G6 P  T
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- c' ], u; s  D. K. _+ @. @
trade-times-total9 c0 r) Z% ?$ l" I9 _
;;
与当前turtle的交易总次数
9 u1 [; J* K9 x9 w  r' Gtrade-money-total
6 s+ \$ ~8 R% u  q0 I/ W;;
与当前turtle的交易总金额; z8 {# I4 K) p3 X3 S
local-reputation( i8 G$ d( M; F2 G* K6 D
global-reputation' ^; v' Q9 t1 {% U' \0 Y1 x
credibility
. z& |9 P, `% Q' \6 Y) w  U;;
评价可信度,每次交易后都需要更新8 O: e/ o+ w) n( I4 Y, F
credibility-all
% B; w* n9 i# w. x8 l9 l;;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
( j% B/ X+ F1 [/ n5 Y+ @- V
) e+ P7 v. m$ A5 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
" l! n; ^6 _5 e$ rcredibility-one
: @1 N: a+ s* n6 T, v; e;;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 f: @  ~5 }8 }( f
global-proportion  S$ @  X$ [! j& x! J$ A8 _! V
customer  U* f; C9 Z# ~* C- `: J
customer-no
1 ^+ @! K, `& Y& n+ f/ ~3 U% utrust-ok
8 d; y9 k" T6 h/ c/ wtrade-record-one-len;;trade-record-one的长度7 Q/ k; y, c7 @1 c7 n  f6 c4 J5 c
]
& y) T/ v! b+ l3 w; x
+ |! l! H! g; ^; t;;setup procedure
. K) N, x7 H2 p% A! E' [* Y
. g5 O$ P% ]: qto setup9 x4 ~. |0 V& v5 e) x) S; S5 I- i1 ~
. Z+ \% y; k, `+ l9 ?
ca

! b! S, `3 M0 ~9 b1 {
- Y( j8 Q  q# Binitialize-settings
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" E+ F( n# ]" z( C
crt people [setup-turtles]

* {  e" ^  K3 Q0 s+ U  e2 W& ]" y- U
reset-timer
6 Z8 v4 \5 }- [2 b/ v: A

7 d; H; W$ c7 @1 C$ upoll-class
; p( E; I+ ~/ A) }1 t& v5 m+ ]
+ m' G9 [* {/ o. ^: p& k5 Q
setup-plots
7 r4 I2 a3 ?) ?/ V/ T

0 x$ \1 k! R; L* Tdo-plots

" x% [- p1 f0 o7 Uend8 v6 I  q! t5 I! {) o. z' u! |

1 L6 w" R/ \" r) n  |5 I6 T# F: tto initialize-settings
) L  i: d: L1 O# \. }- j$ }
+ ^: X( z/ V: W- F# Jset global-reputation-list []

/ M! Z, ~& V7 Y; }" H# v) [, |1 [& S9 W
set credibility-list n-values people [0.5]
2 a1 Z9 [8 {: N& k' {

) h  H9 p* x6 R0 X  a! A8 B1 X) uset honest-service 0
& n* b9 ]8 r5 m% v2 N9 y1 C

+ a, a! d! R# h! ~( R# s$ uset unhonest-service 0

' E0 |5 K$ t4 J0 Q  A' }
6 b3 h7 X# s5 f1 s3 k1 Jset oscillation 0

- I" I1 q  Y# f- o5 r# {* S
3 E9 t: U0 C  {1 m$ ^: ^2 Oset rand-dynamic 0
, S7 J( h' O: s. J* E- Q& \
end
7 a. G4 v) E* C, m$ X  U3 L: [% q) i9 B9 J9 \" y
to setup-turtles " p' l7 u# s) {4 E+ Q: F4 q
set shape "person"
( q, @; p' H# u& D3 }/ Rsetxy random-xcor random-ycor3 Z2 l3 s6 |; Q$ ]
set trade-record-one []7 i  V% d9 f5 ?& c9 L7 U
( |$ b! }$ Z9 T1 d- E
set trade-record-all n-values people [(list (? + 1) 0 0)] / Y7 v& W% S* s! ^

* }$ S" Z: }0 R/ A, lset trade-record-current []( S) w7 F8 q  f' k% Q; l
set credibility-receive []2 d* F' s/ L( c
set local-reputation 0.5
" D0 W* m/ g( H$ D$ @$ m9 |$ w, pset neighbor-total 0
4 O/ K9 S% v2 T; M" d3 P2 iset trade-times-total 0
' g4 C% E8 q' k' \: Hset trade-money-total 0' ?- a# z5 u$ z- E& E! G$ m' {
set customer nobody+ X# c  d; N' p. m
set credibility-all n-values people [creat-credibility]2 G& N4 a& X& e$ L. X
set credibility n-values people [-1]; j6 u! M  \$ p
get-color# a8 t$ c/ a& i" {$ m

4 A4 u' j3 V* p0 ?5 X5 V$ gend2 I4 z, E/ ^$ Y3 a( |# Y; _* w
+ i4 D& W6 j7 ]
to-report creat-credibility
: f$ X. a# `( h3 O" Sreport n-values people [0.5]
7 ?. N8 S4 E. {. q3 E. ]* Jend
" s4 z; e6 p6 `8 P. Y/ ~3 E& w; g" l% k* k) f, Z
to setup-plots; e: K, L% Q; l* a  t; Z1 C

) \2 g9 m( e/ B: u6 g9 K% d/ }set xmax 30
7 T# h$ F5 r+ Z& O/ S( b
! B8 ?0 e4 q3 E2 \
set ymax 1.0

) B# W6 _5 ?8 p% J3 ]1 n! C" W6 n9 h8 x3 S/ p/ [" H
clear-all-plots
) \( y- Y0 l8 J* O
$ h, \, Q& n) _2 U
setup-plot1
- _$ H8 _: Z: i; C7 B
+ g+ v% u- s( {3 _1 s! ]  Q/ }
setup-plot2
' x) s+ g+ C. i# M% k8 U

( g5 K5 T+ ^3 f/ `setup-plot3

0 S( ~$ n7 s+ I$ |8 G4 ~( uend
- o7 D/ h5 `: d2 }3 l4 z' \8 D4 R" [2 t9 V* `& a! c  L
;;run time procedures) k# c3 N: D  D3 O, @4 c, @/ \/ |! A
' f3 S! E6 Q5 j/ V
to go
; C, L. V& j/ |0 D; b( j/ b* }# r% U! q4 V7 a
ask turtles [do-business]

; H, \' h2 _% X( O0 S- gend
/ ?9 c% e0 V& F' U) G) ~& _- y; e$ o! Y% n. G; m' |# m- t- j9 i
to do-business
/ O* b0 ?1 M% [0 y! {  [
1 L; G. J; k' I: m1 Y
- Q! s, e' W. K/ i7 w
rt random 360
! b' x% G9 D/ x. W1 V& C/ z5 |6 e! ]3 i* O

2 f0 d$ L$ i8 N' a7 cfd 1

6 S9 z  C& m3 _4 P9 F, Z0 U# R& Q. b. V2 H5 Y; c% z
ifelse(other turtles-here != nobody)[

# ?( v, Y/ t2 ^
- P) y* w* u3 u) k  y6 Yset customer one-of other turtles-here

7 x8 |4 E2 M/ i5 ]! o4 r6 x! b' @! ]2 s+ I' |" G/ p3 x) F( B% S
;; set [customer] of customer myself
/ G" ^4 E7 h3 @) e6 o
/ ?, ?3 s% I& R2 r
set [trade-record-one] of self item (([who] of customer) - 1)
. C1 k0 n9 X6 o# x/ o[trade-record-all]of self
) o* q$ Q# x: O3 m;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 F3 ~" H7 o: G4 t7 w1 U. N5 f
. J/ Y" ], {$ t; _+ S- s% Cset [trade-record-one] of customer item (([who] of self) - 1)  j3 a: |% Z1 y1 P3 t- p6 L6 ]
[trade-record-all]of customer

. E3 n0 b2 F+ E0 f$ n4 m/ P( A+ G  m  v
set [trade-record-one-len] of self length [trade-record-one] of self

: _% D6 ^; x$ S$ ~8 P; c  L: p* x* C- T: e( `$ O
set trade-record-current( list (timer) (random money-upper-limit))
& `8 p/ Y# e' V! [
; O6 C' ?. ?( q8 d+ \
ask self [do-trust]( E5 H, p1 c1 [4 O% R3 A
;;
先求ij的信任度
+ V& T: T& \1 b1 E% T- _
; i/ q* p4 [% P  f8 uif ([trust-ok] of self)# Y2 R6 @# X6 v- \' }2 f( s2 `8 a7 a
;;
根据ij的信任度来决定是否与j进行交易[( k0 F# U" S6 G# V) M
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" |0 o# t! Q& y0 T& Q

7 E' H* u+ `" x* r# p[

  l2 S, z2 j+ y
2 N: F* i* G; p  Fdo-trade
) Y$ k4 H( D' Z5 P8 q
1 I9 S4 ?' D& S
update-credibility-ijl
' p" }& ~* r! G; q% ^7 L/ w# x2 l# C
- m3 `6 Y' ?9 e0 s4 z
update-credibility-list* z; C7 i# F$ F, I% S: _' Y9 w) ?4 l
! r4 G) s2 W- |7 ?( E; ~; t
: Y8 M" l3 L2 a  h5 v9 E" k
update-global-reputation-list

, h  k6 }/ e0 L" |1 W) p. j% z+ j7 W5 X% Y
poll-class

" y8 }& t# u* G1 O) f3 h! P# S0 {4 }5 v4 P
get-color

" O1 A- P# r. ~
; @$ g( a" y/ C0 D4 y. u]]: f& K, [) S* q' ]/ N( w' Z( n/ k
+ V1 b6 o7 O% P- c. w" ~
;;
如果所得的信任度满足条件,则进行交易9 F4 `# D$ M/ R: Q$ C( O
$ m  g; _4 y' b  F( l
[
( q, a$ O5 U9 C% y

1 T$ m4 |! ~- B0 Drt random 360

. h) ]4 s. T$ `8 A2 R, L
+ z- U1 @* u- O# qfd 1
* Z- D' v+ @1 j5 N, O( c

( K1 x8 P( a4 j5 `7 Y& H, e]

  r5 a7 }+ h+ t3 ]0 c% r$ H( w$ O- ?0 B* D
end
4 W! J6 N' c2 v& L- n* S

) U- j% {6 o0 ^, Lto do-trust ' q4 H3 ]' v) B: b
set trust-ok False
0 W( s6 h& o2 i) v( L; T2 g0 `1 q" `1 X. c0 |

6 U/ [- ]/ B1 u1 d8 Q% ulet max-trade-times 0
* d* F1 N5 W+ `8 dforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; x; ?2 _7 `3 i* L. |let max-trade-money 0
- e. P+ W) y2 B5 N8 Q- Z6 z8 E& j* Dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- v- \- I2 P% j' X6 `+ o7 O7 y6 ]  Rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' {* ~+ Z0 y2 z  y/ ]' T5 L- w+ v$ `6 o$ F

+ ~- g) f1 \9 u7 sget-global-proportion
. M4 i3 a) l* V1 ?2 slet trust-value8 s4 q+ o4 B- p) i0 z
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)

' R! f* i; g, m: E3 _1 M, lif(trust-value > trade-trust-value); \2 k, b2 U, o% q' B
[set trust-ok true]
# t: Q; t( }) h7 O; q9 y1 Rend1 Q" c4 G/ h5 l4 K! g) D4 A
; I7 ]8 r# t0 u7 S( }
to get-global-proportion
* p4 h! V+ ?& M, ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. p7 p( o" L% o6 ?$ R! }[set global-proportion 0]/ E% l; k2 x3 A; U
[let i 0
1 S/ H; n# v3 X5 c. |let sum-money 0
  \+ G# W- L8 t9 T% t8 T! Zwhile[ i < people]  ^9 g# u( k: K1 W; V
[
$ w! q" q% @6 |! v% u9 d: `3 k" oif( length (item i
  l7 L" P  i6 e9 m0 \4 @8 T& I$ }: V[trade-record-all] of customer) > 3 )
3 t7 h, c; g) y! C5 S+ E
[: `0 Z4 f8 [/ M! f0 b
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! D0 h& B( _$ s: ^0 O* r/ s8 `
]* }' ~7 g. |# P% F% o" R
]: l6 [4 o% V+ N1 p
let j 0
5 C1 z  H1 s( ~/ c0 ~- Ylet note 0
0 ?- n1 G+ J* Y4 ~while[ j < people]
' p0 j0 ^3 x6 ~: s: l2 V[
' O" b+ x2 k' l1 v$ A9 E4 r$ iif( length (item i7 E' v6 _9 n+ }8 J1 H* G& P3 h* \
[trade-record-all] of customer) > 3 )
: U# U, l( [. i4 k! p9 x* M
[  V# M' |! m. J. ~; k
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 r, ~6 {& i7 }8 j; h6 b
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 w/ a2 `6 ^# a0 V  x6 o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 {, j- ^+ M  k% p5 O2 H% c1 {
]0 t4 q8 {4 C0 m+ H8 F- W7 a
]/ b$ Z9 n7 C7 T9 O7 w& [$ `( ~
set global-proportion note
) v: ?- P8 D" x, b]
# _( R" M( S/ F4 v! U2 Tend
( |( `3 ^) u5 B0 l( W) X) ^5 \
5 G0 Q4 f% H4 q7 \/ _5 lto do-trade
- o6 n; n' y. s- }- H$ Y! m; \. I;;
这个过程实际上是给双方作出评价的过程
, h+ N( L# N8 ?; k7 [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- m* I& r3 S" W% O9 Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 O5 Z& }* U. n4 F3 |
set trade-record-current lput(timer) trade-record-current
% {: m- s$ A2 P, Q" V2 E;;
评价时间
1 M, h2 Q& i4 o4 aask myself [
( m( c% y: a6 P, P. Qupdate-local-reputation% d9 ]$ l+ |2 b- \4 f
set trade-record-current lput([local-reputation] of myself) trade-record-current  P% r9 v; j, s  y, l1 Q
]
) \( [' K( G9 T+ ]set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ z9 {# e; u' l" n% i: y$ E7 f9 f;;
将此次交易的记录加入到trade-record-one
; F1 N8 X$ a% ~$ s& A" l: tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" h' i; M) Y$ X( z7 R2 ~let note (item 2 trade-record-current )' R0 n& j$ N% J0 ?  D# A( Z
set trade-record-current
% n9 M* S& j$ x2 x) [(replace-item 2 trade-record-current (item 3 trade-record-current))

: C6 H# H; M0 f3 n8 Kset trade-record-current
1 V$ D( @) N9 b3 j1 `(replace-item 3 trade-record-current note)2 O' l& H$ n2 w+ \1 b  p3 E* C2 \, ~

" O# p8 q  c+ {- {5 {8 n: g" L
5 @% n4 i: w2 c- K. ^! w  w. E2 f
ask customer [$ ^2 v# [  Q  h* b8 `
update-local-reputation
. [  @$ v* \0 x% X% L- f2 E, @set trade-record-current8 f2 }  m+ V, l3 d4 i
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- e8 Z$ K: ^/ b( J, U4 U3 P]
$ n4 L6 w1 y2 |) j1 E3 Z' G( z) L) p# N4 G, r7 p
: ?  X7 G  [' G8 R& `+ c8 J
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# Z* A5 n! k8 c1 b  O- b
! b6 O2 x8 i! v% {
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): U1 S* ], d6 O+ r: V' |
;;
将此次交易的记录加入到customertrade-record-all6 q" [9 D  k+ I4 r: X
end7 ^9 @! s" x2 m! }# m: G* g! s

+ |5 Y9 g1 D  j! x% `& uto update-local-reputation" r" u, C7 @# m6 R$ w  \
set [trade-record-one-len] of myself length [trade-record-one] of myself& a: Z6 L2 w8 J& h& y9 f: W0 p  }

  g, G! D5 z# I+ s& ^. z/ M& ?# X. Y. Y! g
;;if [trade-record-one-len] of myself > 3
8 b' N3 f5 w' D, l9 e6 k
update-neighbor-total( u2 |- m5 X) \4 y
;;
更新邻居节点的数目,在此进行
1 ^2 W3 r8 h+ }let i 32 _/ z) u: ]/ _$ q
let sum-time 0- K# Y) J' V; b7 S, P
while[i < [trade-record-one-len] of myself]
) G' U+ a. D8 L# z+ |[
3 |  g  s4 T$ v3 @! A6 g0 Zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ x8 p& [, [6 I; G, x  S$ @8 v
set i" v& r7 ^5 w$ o2 C0 t0 f
( i + 1)

9 T3 l2 M# n: R]1 \  T) [2 C& h4 @: f/ L
let j 3
5 ^8 T3 o3 Z- y2 Elet sum-money 0- Z  |3 w5 g8 s2 n9 ]3 e1 {
while[j < [trade-record-one-len] of myself]0 I* n# {1 X; Q
[  [/ c4 h6 n% ~3 o  U- {' J
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)
3 U/ H# b% Y4 w' T* nset j( J, g  B  Y. V
( j + 1)
2 z5 m, ^# w  i3 z5 B" J5 I( r( Z. u
]* w$ Z% E' d% O. _7 m
let k 3
, k; P5 w$ l5 N0 s  _6 R; x- Ylet power 03 D+ R- `" m( X9 {6 @, J
let local 0# P+ e! H1 a8 H/ [) U
while [k <[trade-record-one-len] of myself]
: f7 c5 b  ]! Z% _* A[2 R. D, T6 b) @8 i2 E+ v/ u
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) $ i8 A1 C* X6 x6 q' Z3 s
set k (k + 1)" c6 A/ ]6 O. K. l1 \+ \3 R, F
]6 g4 v& r! R$ Z  }0 @$ j
set [local-reputation] of myself (local)/ X% z5 _7 l2 y; L! S2 H2 j; f
end% o7 ]+ I3 O) ^+ k* A+ t

3 O6 ]" W" ]( x# d* Ito update-neighbor-total
" u+ I( }! ?( `7 |7 q
* Z/ [" K% D. s) Bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% Y% C5 c" l, N5 \4 v# t
2 w) v5 z" V. U) m) H

- p4 \; a# t+ R! Fend; {; y# Y( T) V3 `9 B  n# F+ m

+ R: ^# `5 p+ o4 N& dto update-credibility-ijl
, F+ i6 J) x" d! g1 s' a* A& V. H% I' l& F
;;
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, E; e9 B7 z3 j! Z' qlet l 05 ]; n, N$ h5 T5 j
while[ l < people ]% }- S3 @: c; e0 T# I5 J
;;
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) w6 O7 G# P9 r# n% [
[( p6 ~( F+ Y% w& X  I4 T
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 S4 b( U) h/ r: R
if (trade-record-one-j-l-len > 3)9 P/ w" e) _5 d- ~* i4 t7 I  k
[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
2 F1 o8 T% W; t0 q, [7 Wlet i 3- R+ C( w* C7 _" E0 c8 Y. u. f6 G" U8 T
let sum-time 0
3 N) @7 H$ L* H7 q, n$ l, V8 zwhile[i < trade-record-one-len]+ {! f5 \* ?! i1 r
[
1 R, ~0 Y6 M9 x3 n) v7 e7 \, ?* [set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 u# u+ ~1 X' _' [set i) p4 h3 b& h5 a8 y% p
( i + 1)

& _, s, z' g: W9 v! i% W]
- Z4 `4 @/ H4 ?let credibility-i-j-l 0% j/ p' B  a9 O' b1 I- S" B, l( o2 u
;;i
评价(jjl的评价)
6 Z) `' Y# h2 ~2 Z2 r5 blet j 37 ]# V: n! S7 c$ g2 \7 @
let k 4
+ w( {3 k% Z8 ~# A5 f' jwhile[j < trade-record-one-len]
' _: Z5 S7 r+ `! F[, W. C* ]0 V9 f7 u
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
7 E1 B6 i9 {; Q8 Yset 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)6 ?/ M3 P; f: o! ^6 j
set j
0 U" V& @  Z0 s( j + 1)

+ Y/ Q: ]* O; Z2 W+ [8 ?% |& {]
) G/ n+ `( \# p2 P, kset [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 ))
: W5 u4 e6 r3 z, k5 q; Q
8 l) {+ h/ N( x3 x4 R
  y$ k& {, i/ t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 a3 L: ?5 k5 Y- [
;;
及时更新il的评价质量的评价7 p2 X1 S- D( Z) w6 t) F
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 s& y& t0 t. ?# r8 d5 u. V/ q
set l (l + 1)5 T8 J" t) G# ^% U% z9 m$ W* a$ ]
]0 c9 X3 ]5 f/ _
end$ o/ I! N/ `* w7 t: Y

" i# P2 Z  p; ~% |to update-credibility-list7 N/ K" q' |( {* h& }' h
let i 0. i' n' Q. ~* l$ w
while[i < people]' p8 @. S( q0 r9 y" n0 t. W
[
* Q, D, w) t# Z& {3 J9 v) @% G9 ylet j 0
. e& v) |7 n; y( y( g" r: jlet note 0
8 X* h2 Z: j' ]let k 09 B- G% O7 _+ [7 w4 M7 }
;;
计作出过评价的邻居节点的数目% y% q9 D; z  w+ P9 E" F1 i5 {7 X
while[j < people]
: X( Y, \. g9 }2 K[( p8 e3 q' H6 S5 o* @# W# o) s
if (item j( [credibility] of turtle (i + 1)) != -1)
7 A3 `* x! |! e3 |;;
判断是否给本turtle的评价质量做出过评价的节点, M% {+ K0 `$ m8 e3 w# U  W
[set note (note + item j ([credibility]of turtle (i + 1)))
" U- b6 a, j8 \;;*(exp (-(people - 2)))/(people - 2))]
8 K# l; O- T, L" H+ y: {" \& f
set k (k + 1)
( n7 V0 r. p2 F; U% z]
% V) w" `) _# p# o1 X. K2 }5 u2 Pset j (j + 1)
- Q' Z! b3 _. a, |; z]# f, R) \7 q; t& {5 p  b# w1 h
set note (note *(exp (- (1 / k)))/ k)
) X9 J8 B3 }1 r: P. zset credibility-list (replace-item i credibility-list note)
" P5 C: x5 m( d* r; M7 Nset i (i + 1)
- J3 ~9 V/ F( C3 V$ V! f]
$ r% q- W7 H$ B, y  [! [$ d  @% Dend
. B  g" @& T' y  O  W" [6 N2 n( n' x$ |: z: T& L. L/ t; s
to update-global-reputation-list6 ?! S, j' x5 |5 ]. k/ }
let j 05 a2 X1 e9 u( ~) ?
while[j < people]
  ?* e6 f( k4 p) ]) U9 @[1 ~7 R' x2 _6 E! a7 K1 I
let new 0, f- d1 p4 Q" A1 F  i
;;
暂存新的一个全局声誉" U, l, K3 Y5 v! [  ^2 f
let i 0
1 q& o* r) }/ o2 {let sum-money 0" T1 I2 p" U+ L( T; Y3 p7 Y  N
let credibility-money 01 D$ ^, w. F5 y- i4 O. S$ o
while [i < people]; ?  y: H/ r, R- U% M0 v  m
[
( s  z& r5 m1 i7 h" @set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 N7 Q8 R- [6 P1 E
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# p4 N+ k# q: J* e" U9 h$ @
set i (i + 1)
* m2 c+ c1 z2 ?* p) ]; O* `2 l$ z! _]
* I8 p7 b/ r/ n/ H% a  j% flet k 0! r4 o6 n" K' z. e5 c( v! K7 H, |; \, C
let new1 0
. ]7 Z5 t" M3 c' \while [k < people]3 @& y) M0 u$ \1 C" h
[' E. ?" e3 }: U! d5 f% 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)* B" J3 ?5 s; y* P% q! @
set k (k + 1): w; ?% a4 L) T& q
]) ^& ~4 O( r. C8 ~$ v4 M
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 `1 \% E/ s+ Y& Y( B
set global-reputation-list (replace-item j global-reputation-list new)3 L" x1 `3 I- H4 |
set j (j + 1)
  q8 ^% [( x2 E( D/ C]; t5 m7 T$ H) p; c  H8 v
end2 R+ r- b( L+ p6 ?: A8 C6 ~
6 C% O5 J# x$ M5 l

# s3 W# ~2 r+ R* o0 t
( t2 ^  E2 @0 U* tto get-color. I$ j( o6 W! J5 H7 n5 m% P! c
2 g8 \) `( J5 T/ R  y
set color blue

4 ^0 w7 f0 ~: p( N/ {- Xend) [$ }4 I/ k+ y0 E4 _
: g' t, z; b3 H  c- {
to poll-class& ^1 Q# g( R$ @5 L, X
end
# K/ @) c! P2 u1 V6 }2 v' r' r& a5 |% N* }3 T$ Q
to setup-plot1
8 J* q7 z2 `* b8 G1 Y
6 N# D; E7 c+ _1 \' l9 Vset-current-plot "Trends-of-Local-reputation"

/ X' c3 h& J3 w, k7 O
' g9 A' y" n% s  s; V( p" ~set-plot-x-range 0 xmax
, H- T. O  O  Z# `6 q
. V* H6 o+ B3 L( v! X) n
set-plot-y-range 0.0 ymax
% i; D1 v' V& ^" s. H
end
9 P) z% `0 i" _- B' {) ]( T2 p! y0 Z# e1 Y! [. P7 b' i+ k3 A
to setup-plot24 W" o/ E* r$ B7 H
( b/ L4 y4 i6 n, ^
set-current-plot "Trends-of-global-reputation"
4 ]4 D; V, G8 q1 v  |+ }& T0 b
# D3 Q& C$ @4 J7 v' u1 F0 |
set-plot-x-range 0 xmax

; v+ z2 D+ o  F& l
9 w" u0 {( ^$ N  Zset-plot-y-range 0.0 ymax

' s* X" h1 G2 `. kend
# K. A" m$ `" r: [& n
% W6 l/ l5 t1 v! L' \8 sto setup-plot3- Y' l; E1 o$ D
. A) s( R$ V: j1 L- o7 B
set-current-plot "Trends-of-credibility"
; }0 Q$ z2 V* \+ E1 f, S+ d
" x3 @! g' h4 I4 d0 L+ J
set-plot-x-range 0 xmax

3 M% ]! [# g' A  ~
# M# Z8 H1 X. Y5 _set-plot-y-range 0.0 ymax
5 z5 [0 d, \$ Q# L0 C+ |3 f
end3 f- Y* x" M; @% z' h
% a& M1 {- Z: B: {' Z$ O
to do-plots
3 o/ Z" _5 Y) f$ Vset-current-plot "Trends-of-Local-reputation"
! ~! l: |3 U; l) p! K! E' x! Dset-current-plot-pen "Honest service"
* [  k/ J# x" T0 K7 C8 ~; ?end
6 a8 r. z. K3 ~' c0 R$ o# @: B$ `: j9 }3 b
[ 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.
, V6 D2 g+ v4 b% h
- r7 ]4 u/ `; J8 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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