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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:
4 p( r$ H3 e. _6 W8 ~, ito do-business
. s2 H" ~! [$ e: q8 x! J- q$ {% Y rt random 360/ J2 _6 }+ [$ D2 @2 D6 ~8 E' Y
fd 16 Y9 D0 W9 @" h  |: F8 K
ifelse(other turtles-here != nobody)[
, W( c  G* `9 S$ V5 a8 u   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.
# P6 N: |' H& s. n   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" _* a/ t6 @# G/ l   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ w/ Y2 t+ q0 Q: f/ {   set [trade-record-one-len] of self length [trade-record-one] of self, N  r2 d$ P# E
   set trade-record-current( list (timer) (random money-upper-limit))
( G  B1 o/ @9 i& R- C( N( C# J% A$ \, t, N" l3 ]' M. }
问题的提示如下:
- Q- m  n7 ]; R
8 ~: }' z# j  U/ U0 E3 Kerror while turtle 50 running OF in procedure DO-BUSINESS7 e5 P& i" u, W0 y
  called by procedure GO
* R4 z( c* P/ P) q2 Z+ O: WOF expected input to be a turtle agentset or turtle but got NOBODY instead.
* v4 m) H+ |+ s/ M" e1 C5 P9 _! b2 Y
(halted running of go)
" N, S4 ]/ D8 c' U
4 d, p$ p( B& J1 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~~
/ k) w6 S3 w2 i: E+ ~- B7 q5 y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
: }0 A% S( q+ j7 D0 U+ }globals[4 j$ o/ s0 s2 y' R8 W- D5 O% ]
xmax, L; X* @0 L4 j# l4 w( X
ymax
' }+ @* q( s1 B* q) zglobal-reputation-list
/ K! N6 B, |/ }
" c0 w% `+ L3 e) U' V# ^' S;;
每一个turtle的全局声誉都存在此LIST7 U. J2 S3 b/ Q$ |! X$ g7 Y6 {5 y0 h3 W4 z
credibility-list# J& k' w) s% \& l* E6 ~; {3 h
;;
每一个turtle的评价可信度
% s% K: H; i. b: i7 A) k# Nhonest-service/ l; M7 J7 _$ X
unhonest-service
! ^, K7 m4 H8 `8 x" w9 Qoscillation
: R" Q- ~! ~" g6 m1 [rand-dynamic
1 l& F. S0 O" U/ G]
! d% z5 T+ j$ C1 s! U) K6 h+ }: J+ F) b
turtles-own[
6 D1 x: ]3 E1 o, _* `' Xtrade-record-all( @9 O6 R3 ^# E2 Q; ?# l! D8 F
;;a list of lists,
trade-record-one组成
6 U( V; S; y! F& {6 ]trade-record-one
! i7 G6 T; I) B5 d. Q* u;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 F4 s0 g: _! U$ H$ F

$ o) t9 C/ i& N' ?9 E;;[
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 G7 H# z. W+ ?+ x
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]( Z; [. C% c  f5 ?% S5 P8 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
% c7 s% Z2 |2 X; X5 [) G" @' mneighbor-total9 Y5 l+ p% D. ^5 h5 ]3 W' Q
;;
记录该turtle的邻居节点的数目  }! M7 q- G6 m/ z+ C7 \; H
trade-time% k4 P5 ^  }1 I/ Z! X1 ]7 M
;;
当前发生交易的turtle的交易时间
, T4 u" W( `" u0 j9 y! ]" M) tappraise-give0 ~9 N- ?) T& }  d
;;
当前发生交易时给出的评价) ^$ |" r  g2 Q" t: G8 Z# m
appraise-receive" U; C8 ?: e. ~. N
;;
当前发生交易时收到的评价' n7 {& t: x- K5 v7 H) K4 [( G
appraise-time
$ \$ T; h7 ~2 y- m;;
当前发生交易时的评价时间
4 l6 ?9 u( r+ F7 Slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 g1 S( m# q- d% jtrade-times-total: S: F6 w- m9 g& W% l' j
;;
与当前turtle的交易总次数. h' c% B+ |9 w1 Q# e: X
trade-money-total1 q4 R1 Q" I; h( U& M
;;
与当前turtle的交易总金额
6 U4 i, Z* O; Olocal-reputation
  i2 k: p8 T9 G5 {( Z2 w  zglobal-reputation
) X8 T5 v. @3 [credibility
( x0 P% p8 ?" L& v;;
评价可信度,每次交易后都需要更新- m1 ?  P6 w! n# o
credibility-all
" U& w. K3 C; @$ a- C;;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8 h) S" e. K/ e) f$ z1 R( K$ T8 Z3 d+ g

1 B1 G% h9 Y6 J% @;;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
2 Z$ v2 {# F3 ?" G* \7 F* ncredibility-one" j/ \5 u. Z% J5 b. P
;;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
, ~4 i9 x6 C' Jglobal-proportion1 S' ?) h9 \* ?5 v# u
customer/ x+ `6 a0 b7 s: J$ }
customer-no8 u# c1 u. W+ v) z' i( M" Z
trust-ok% l& [& T& _, G* h
trade-record-one-len;;trade-record-one的长度/ P0 t) y1 S0 R3 R& j% w
]
+ o% q; J& \& s) C2 Z4 ~
& F2 V' [$ y" o! Y+ t6 _, \$ h;;setup procedure0 z$ z( J5 J9 h" i7 N( z) A

% H$ g3 |, }- T, \9 h7 P. ^. Gto setup8 d" {. X, w: V( |$ U

7 i  s" r/ \; E( t* y: Ica
7 X) x  u7 Q% g  B
9 f- ]! Q, u9 @
initialize-settings
- Q$ }2 E: t1 R

& z" Y5 N/ u+ l6 F+ Z) v$ G1 Icrt people [setup-turtles]
/ D& n+ B0 g( y; f4 t8 R
# Q8 @: M, x- Y3 M$ d
reset-timer
! j- D4 G+ g/ ^2 Y, E2 z7 E) F

5 J! u3 ^" @. u* p& z7 ]poll-class

. @( ]  O. M6 Y' a4 F$ s* K. a8 T& i) x$ j  t
setup-plots

* u& I  o6 i$ c, e$ T
0 a9 U4 G8 g- [& Y3 M" bdo-plots
( Z2 D. _* c' j: d5 r+ e
end
6 E) I) N4 \6 k! S2 M/ }& d
; w0 R! n: h4 n& kto initialize-settings- m; s5 j! I: _+ a; z$ @. ^
7 Q' ^; d8 f7 d2 ]# C
set global-reputation-list []

4 r& `. h. ^, h# Y$ i: q' W1 T6 u- I2 M- n! p' `
set credibility-list n-values people [0.5]
( u( n" F) y9 @" t1 M2 {+ `

4 X. G9 H1 s6 @! H, V5 Lset honest-service 0

8 N5 g2 R  V4 W2 p( A$ a: w
2 B% e$ E: z/ q9 k$ xset unhonest-service 0
) w7 Q3 b, y: U! ?$ W

" C8 v( [2 o$ G' z+ xset oscillation 0
2 y0 v" Q. o% `0 S6 g

& Q' U2 N) T& q5 V: p9 wset rand-dynamic 0
5 D9 u! y: V1 B, j
end
  e* e& r+ }6 y& |5 m6 t1 q2 y& i9 |7 |6 |- N8 l
to setup-turtles % g* n( f, F9 r- x0 X
set shape "person"8 J' r8 D. i6 I% B' R
setxy random-xcor random-ycor
7 b0 h" g( u& p; T$ e* r# y$ {# G8 Xset trade-record-one []. i! I5 B6 U" d

/ H. T0 G0 n5 y; O; q7 C$ S$ yset trade-record-all n-values people [(list (? + 1) 0 0)] . e; ]- c& w" Y1 k# a5 s1 {

: f) ~  V2 m4 [set trade-record-current []
! _' K6 U# K+ D9 I6 {4 @3 K- ~set credibility-receive []
+ b" l5 }7 w% hset local-reputation 0.5# h  {" |$ _8 Z& H. ~
set neighbor-total 0; t8 H4 y6 U; \7 d9 v& q
set trade-times-total 0
1 ^3 c, _1 F$ y( l, j( Eset trade-money-total 0* b9 F9 o1 W4 C8 p  S  x
set customer nobody, S# c/ e# O1 @& }, d: W
set credibility-all n-values people [creat-credibility]3 P1 K. m& z5 t: n' @. p
set credibility n-values people [-1]) m, s7 A; L  K
get-color
5 D3 j0 \8 b3 B& i: C3 C5 D5 ?
* r  Y, Y3 z5 K" v( Y$ y, Y. m+ S/ b
end8 |1 Y1 J2 x' V2 \* u

6 z2 V/ N0 \* ?+ N$ zto-report creat-credibility
# E2 R7 X( L  a, Zreport n-values people [0.5]  |" T9 C7 a6 H( e! R
end& C" }) p9 o6 B, A* h* f0 V0 K5 M

. r8 O$ ?) q  x$ v2 ?to setup-plots
) n7 j* e! f; }: Y5 d. {( }. n7 c, t- H5 l$ a
set xmax 30

- K( p+ C% P+ J, U7 V% G$ n6 E  K! k( e
set ymax 1.0

* Q1 P; c1 j2 y1 N$ J9 `- I$ N/ s( k! {& `2 J. Q( p
clear-all-plots

1 h) n: s4 M/ d% N- o2 U" {0 @5 J$ }4 D
setup-plot1

/ g. Z6 @7 B" A' s' L0 G
6 a0 ?) q9 m% dsetup-plot2

' o6 @) [1 Y- _% O: U
, h1 S* {, y( d" z5 k- Asetup-plot3

* J5 _6 @$ C: V6 v) X( R2 pend$ b. [2 [+ O* V4 L

8 r  r8 m5 l7 @1 N;;run time procedures
' F; T4 e" H, N1 D8 r1 w4 c; S+ `6 x' r4 S, p. j8 y/ P, K+ a
to go
8 b& D0 w* n) H
, I1 G- B4 F  J5 \ask turtles [do-business]

5 e) C+ ~0 F0 ?end# |! ?4 j( @; P0 T0 Q* s
& h, I* l3 C; N
to do-business
& S( `( U' @/ |- x6 t$ M# V

% {/ t- M4 W, }2 ]7 B) P# V# P& l. `( ?. q) M' E9 u
rt random 360

! y9 Y. R7 }4 }1 b8 x+ R; u3 D( [! D7 \1 Q% H4 F
fd 1
6 w4 V. I8 ^5 O" e

! h, G, }/ F4 ]6 `4 c7 v; o0 X1 }" O9 bifelse(other turtles-here != nobody)[
. j* ]- w/ K' f9 D# a# N$ R
5 e7 ?" d" p+ }8 _0 y' m4 M0 B
set customer one-of other turtles-here
% X+ c% C/ h: a, E: u+ k1 C
3 x+ ~6 H* ]& ?
;; set [customer] of customer myself
2 h. r% o' n& e3 c$ K3 l+ |

' q! o! ]5 w( z0 ?# s( ^0 @set [trade-record-one] of self item (([who] of customer) - 1)
( G9 ~, D. {$ I[trade-record-all]of self+ Z7 B. B3 t& a0 {$ i+ u+ Y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% M. }4 X  M4 B
1 j2 P1 V5 R6 Y: p7 f
set [trade-record-one] of customer item (([who] of self) - 1)- [$ O3 \4 E( a
[trade-record-all]of customer
0 z/ p+ `+ W, m3 e
9 k' [. H7 Q+ \; v
set [trade-record-one-len] of self length [trade-record-one] of self

; ^' v2 F# t6 K. o! }: _4 N$ n1 L3 \  m
set trade-record-current( list (timer) (random money-upper-limit))
1 V, Z, ^7 Y2 _1 o, x! v& V
4 h4 k2 I( m) V0 t: A7 T5 _
ask self [do-trust]6 v, W- {( u$ ?9 n$ H0 P
;;
先求ij的信任度
0 B' n% U' l. o" b/ u9 D9 {$ i# \
. `" }+ T& ~; s% e: J) m) hif ([trust-ok] of self)
6 L- R) Y* a- F; L. J* k4 r;;
根据ij的信任度来决定是否与j进行交易[% A4 P1 |9 X3 e% k7 g3 }
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  J% f; K! [0 n, ~6 Y; g' j  r$ A! U0 o; m0 {' f) D
[
# C$ W, F. c% d& B1 v  L* @
1 g. F3 c2 o; L' P' u( _
do-trade

0 a/ B5 {: o2 Z2 t6 F1 _( S' W$ R4 f
update-credibility-ijl

1 |6 o4 g2 m8 ^0 y: J% I4 k- {8 h1 H4 @1 Q/ W& H
update-credibility-list* K- I1 q# e  X4 S

- ^) H/ A$ m7 r7 Z  U( o. L: s+ t( c5 ?" c% c  V* O$ [6 h
update-global-reputation-list

$ q% m" q* \' C3 D
# {- E- ~! q& k; Dpoll-class
5 F  `6 n9 b1 R* f+ ^
: G* Y- k1 b3 Z0 f! _# W/ B$ r4 J3 q
get-color

* \" ^& t# R  _. M
% a9 B5 T3 I4 k1 w]]
8 y: W) q6 y! Z" c0 \( j1 V2 ]' O
;;
如果所得的信任度满足条件,则进行交易- n5 c! A' z5 Y  f3 q

( v9 W  [0 y, b: b2 O' h[
/ H1 |# e9 b$ P2 k. b4 c% _& @: h

: k1 u3 Y5 r0 J0 j- X$ vrt random 360
  y% O" \2 |; ]
" e+ b7 S! i0 w& O$ W- [5 p
fd 1
3 y; d% [- H4 S7 B) G

  @9 z" K+ j9 y$ g9 I* V]
& N, x& y7 H; L& t0 c

4 {9 V( M7 k: [7 nend

9 ?3 N8 L+ f. [& H% Y9 S6 v+ Y/ E4 W- [* D* h7 c
to do-trust
+ v- Y) C: S6 p1 Z, k9 i0 Aset trust-ok False8 j# K; h6 V7 m- B

# L% S3 ]5 }9 m, l

; W) A9 s6 r2 T1 M' X8 flet max-trade-times 0
. p  t- M/ Z3 _7 N( }& N+ Rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 ~9 i3 K1 K5 ilet max-trade-money 0+ o) c& c& W# Y6 p
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. y+ c: x' }: Q1 F5 P1 Mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. L$ E) H+ ]! h& j' w4 F" S4 i+ e9 B1 M$ C* f% V( U" _0 H: P+ L/ k

0 M( C2 P$ e) d8 i. B3 ?3 [get-global-proportion" d2 Q( p& _  g+ E# _& q- O
let trust-value
! k& Y( ^1 o  S* `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)

. h2 N, A4 y( Z$ n, kif(trust-value > trade-trust-value)
6 \6 ~( e: \; p0 I[set trust-ok true]
# h9 R" `" S2 D. i  G; q) a, ?end
. W- t! x9 ?% i  d" w6 u
% g! x, F: R( Tto get-global-proportion
0 G; w8 e$ M& u4 {! }ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, h( n! C0 p" i/ _[set global-proportion 0]
+ W% \: I9 Y4 k5 f3 W- ?7 o+ s$ J[let i 0
! q  L+ e) K* R* X& s. Alet sum-money 0
* P( v  s. ^  z, [, zwhile[ i < people]
* u( }2 _6 [0 I[
8 W( q% K7 C4 {# S; Vif( length (item i7 P) ]' Z: l; E
[trade-record-all] of customer) > 3 )
3 [4 c8 O* K, C" x" Q$ U- \' H. q
[
0 d" M6 p$ i- T% w% p6 Iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( F6 c; F( a, t' P]! f' g! `5 f; I; d. N% Z
]5 y8 I! G1 {  `! x/ f7 m8 x
let j 0
% F" P- F# w0 Vlet note 0
9 L4 v+ H3 p( lwhile[ j < people]/ s0 Z( D  A4 z0 w+ w# u
[
! I5 R  r. M7 j  Uif( length (item i
7 |1 o, n) B; o[trade-record-all] of customer) > 3 )

. q8 h7 K* F: t. c1 [/ B, N[" d+ I# u; `' D: w
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 G5 S- p- c+ S0 Q6 D) J2 i[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; t8 m) C2 i* y) @
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- }3 k3 A6 k- }: ~) L]
0 I( [2 G2 [& ?]
, E9 Z9 D) R" \8 X, o$ v, Rset global-proportion note
8 m0 ~8 _' ?8 ~5 Q8 Y, g: x]
- Q: ~  I1 J3 {end" Z8 y  H! p4 i% Y) P
( p) f2 x% Y0 @& d5 W2 f% j9 ], u
to do-trade
0 h9 Y0 u% U! v1 V) S! u/ {;;
这个过程实际上是给双方作出评价的过程4 P* G" S( \& f
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. i; E+ X. T" n6 X3 {( B- X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! |1 B0 z+ S" P. [2 \9 Q3 x
set trade-record-current lput(timer) trade-record-current$ C& A2 B& J" P  G( ?4 H& q
;;
评价时间
# l' }, R: J, g/ C# e/ @4 h2 ?ask myself [3 @8 t3 X; B0 K6 J/ u/ ]- h
update-local-reputation
7 h# O. I1 u0 Q' ]& k$ [set trade-record-current lput([local-reputation] of myself) trade-record-current) M  l  o9 L" ~  q& R: S# m
]
7 \* v  t& O. ]) M* }8 P6 e2 i! d& vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 {. M: `! t) V; Z/ |: P
;;
将此次交易的记录加入到trade-record-one
! g' Y2 L( E! D/ O( ?- @" G, lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 G! s/ z8 A8 T/ l* ~2 Z6 y; H2 alet note (item 2 trade-record-current )
7 n: s; b1 }! f/ T3 Tset trade-record-current
4 U- k& Q  o, t6 U4 v* y4 ]; A" P+ V- t(replace-item 2 trade-record-current (item 3 trade-record-current))
% r" m8 i( \- V; r1 W9 x, _9 r6 ~" r
set trade-record-current; W; Y8 Z( d! ~
(replace-item 3 trade-record-current note)
) y  u6 F" e: j2 I5 J& q2 U+ h/ x! L1 D* _/ _1 x, }  `
5 h& @5 `6 O. j1 ~
ask customer [
5 D2 _/ b5 y' h# Xupdate-local-reputation
2 {6 z4 R; B; v- x5 M1 @4 T; rset trade-record-current$ x' R; D" m9 f) P% l+ O
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 w; O- t  I1 s) D, h  W]2 U. i$ H! a" U2 Z+ N  P
0 a1 O' _1 v) ?$ e! A
/ G3 i1 w& \# x# n8 [. P* E
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* S/ H# Z; [" v/ Y$ a  `; O9 o
  I2 I, S. \" `" b
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' D" F' k4 x9 k0 Q" y1 {;;
将此次交易的记录加入到customertrade-record-all
: R1 c4 \: R" j- ?6 B: n" ^/ ?: O3 Eend4 q. J+ N6 ^  h& |% x1 [4 a

/ ]/ q! e$ j* t. F& uto update-local-reputation
- @) i0 i- o. e3 d1 M6 e1 l+ zset [trade-record-one-len] of myself length [trade-record-one] of myself) K1 h3 V1 \1 i1 }6 o; M  O  @2 q' t2 Q
6 X8 w3 c! [4 g) T- u
# N* e1 L! h7 m" m3 t' x% \
;;if [trade-record-one-len] of myself > 3
  p4 `" ^% Q: w2 \$ Z
update-neighbor-total
6 u2 Q* g" ~& A: i' F) U/ R" @1 D;;
更新邻居节点的数目,在此进行* g/ d3 i5 R' I" S: R2 K: |) u
let i 3* ?6 C& }; m- k
let sum-time 0
6 ^* |" r% N9 D' x- Dwhile[i < [trade-record-one-len] of myself]
9 ?0 E! x; i/ H+ u, o, ~' z8 F[
' f& K: T+ W* kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  e# c$ ^9 q. B: F4 S
set i
9 `8 d- u1 X: w% g% I5 ~3 U$ y( i + 1)
8 n( p+ T. ^6 {
]: Q' b9 Y! U$ W4 S. h
let j 3
- E# l4 x; R& H2 i7 @let sum-money 0
% ~* v5 F# Z* l" Qwhile[j < [trade-record-one-len] of myself]4 v- r+ x, E: u. E6 }
[
) y. j& _! i3 G$ l9 Jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
- A6 O! t2 T( B3 j+ ~/ iset j
, M/ @, p6 v5 w/ g( j + 1)

. E% d$ \. F3 N0 t- v]
# p- n% w: ^) I0 _2 Clet k 3. M) @7 g  K. Q) m
let power 0- [  A+ }6 X$ I% Q$ e0 X' h
let local 0
2 t4 R0 g" E- ~( `# h3 _, m- [while [k <[trade-record-one-len] of myself]
) p" i' N2 L$ N[
5 S! i/ S$ s1 m: \8 T- b* [1 ~) F( 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) 4 m& p* N8 A) S6 i) g) x
set k (k + 1)
: K5 S0 \. \, J! [# ^' E]
5 Q& K- N/ o2 z* m$ nset [local-reputation] of myself (local)4 x* @! G" [+ P1 D3 J/ o
end
* b8 G* g, S/ ?5 k( n! U, S, l: p9 \, A, H8 I+ q! w
to update-neighbor-total2 T8 a* }9 Z7 R4 D
6 {. q* u0 S/ a7 A9 m* v/ x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! `8 S# c9 E! Z$ W9 s$ `# H9 R
7 `" d/ H5 v  ^; M5 q( X0 Z$ e* q& V
0 q- K  S/ Z, m) S* I+ |
end
* b2 K; V$ e7 \& N$ H, n$ G' M2 \% J% o' v# K# z
to update-credibility-ijl
* l, W: R! p; T4 R/ y% R/ v6 o) h2 k3 r9 `* T8 L% m: p% i& M8 f' p
;;
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。
9 w1 x  H9 O3 @3 l; O' E8 Nlet l 0
) j, b" ?9 v' [- B3 o1 \* mwhile[ l < people ]
0 z" [% V  a* j/ K$ X/ ]- f& t;;
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  ^1 U- W. h0 u0 s8 p
[
  D! d6 L  P& I6 q% E* }3 Ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" M7 I8 r& o: y# o8 z& `; |
if (trade-record-one-j-l-len > 3)
3 z$ M# |1 U& y) |9 H5 Y[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
. U5 z7 G3 W- O6 N& llet i 3  |% d) Q  U5 l; f) N
let sum-time 0
9 @; I* f* E7 g0 I6 W; ?. r2 i. c  Vwhile[i < trade-record-one-len]
% D' i' u# ~/ E' ], q7 p[
* b2 Q9 y3 J1 E3 h& @0 j. _) \# Uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ K) P- f8 c: {& v" E+ c! [
set i
' z/ O" g( Y( s; P; N, B; O( i + 1)
% r& V  Q) J7 e9 \8 q1 r
]& G) I0 [! B- U3 f; P/ l+ ]
let credibility-i-j-l 0
! J: o. }" s9 J' @1 v) B;;i
评价(jjl的评价)5 g2 x% P" r3 `( o( a, Q( z; l3 ^
let j 3; f6 E4 Z% _: |( Z$ A8 a
let k 4
* \2 [* q( m* ^( {) u$ Rwhile[j < trade-record-one-len]* K7 D2 y/ G- Q4 U+ c1 Q% n
[: y3 e, {1 l7 j. V
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$ x! \! @# u. G6 _( }
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)
" L' R6 I- C  h  v  J* Aset j
- E/ G# T4 ?, s' r( j + 1)

9 D- ^3 z9 K3 u]
" ?" B# n7 V" |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 ))
5 ~& b, s4 Q; Z+ M& t0 e( H% s: `9 I: j$ C! x4 k# O' p

: P3 P7 q$ t0 _; Y9 r- {let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) \, f' C$ z' n' Z/ h3 l0 A;;
及时更新il的评价质量的评价- J: U; y3 p9 Z; C2 x4 }
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- h1 Q* T  e- K0 [
set l (l + 1)$ p6 q5 J8 R0 o' F
]
6 r2 z( \! T6 Q$ z' tend
# y1 ]6 g+ l7 ?
; N% }" r* D: j9 Sto update-credibility-list( p! n0 v, K0 h  y- v+ C. ~
let i 0
/ _: K/ e+ v/ F/ i. gwhile[i < people]
$ w! C! G5 H) T" t( C8 F/ w5 {[/ `7 d  K7 ^! N: C, ~' K  |1 b4 A
let j 0
& Q! G6 i  g8 u4 q" Olet note 0: F/ H7 o% z/ [
let k 0
! j5 P  x7 A2 O0 b0 {5 v0 ];;
计作出过评价的邻居节点的数目
) N* i/ h9 s+ o# [while[j < people]
& V, r! {- }, l* Y/ l6 k, `[
# b  ]+ C% g5 T- H. lif (item j( [credibility] of turtle (i + 1)) != -1); ~) y" c" j" w/ m$ h+ ~) t+ \
;;
判断是否给本turtle的评价质量做出过评价的节点. L: s) D% x; {2 c$ m0 {1 J
[set note (note + item j ([credibility]of turtle (i + 1)))7 G6 R# d0 b/ s& g( Y5 H
;;*(exp (-(people - 2)))/(people - 2))]
* k1 C5 S/ F/ K% E# G/ M8 L) i
set k (k + 1)/ Z3 _. w: r6 @3 j
]
; h2 O+ ]% |. K3 Nset j (j + 1)
4 D6 _- E2 n3 X0 O]
9 ?# V- Q3 _8 l6 K& s2 H, oset note (note *(exp (- (1 / k)))/ k)
4 H6 w$ h  u9 z, }8 m7 J$ Hset credibility-list (replace-item i credibility-list note)$ \. O9 Z' s9 D: }7 n2 N8 |, V
set i (i + 1)
9 q' R3 C2 l+ R  y2 V- U]6 O# l* S0 h3 e% V
end% F6 b5 @2 R3 _

7 y$ l+ t6 }! G4 j8 X7 zto update-global-reputation-list
% X) v3 }9 ^/ I) M3 Ilet j 0% B4 m( q. j& l" {4 R  Z
while[j < people]" U2 M6 I) M2 }& \4 H& C1 ?0 E
[5 ~" C2 v- I+ `) s
let new 0
  y) p/ Y/ P7 c* |* ~% n6 Z;;
暂存新的一个全局声誉" v& B* p% F! W7 H% Y+ T
let i 01 J  ], \: u' m' a
let sum-money 0
( J% q& U: ]6 P0 Ulet credibility-money 0
3 [5 v- h  L# Z+ rwhile [i < people]/ g' l* ^; s8 ~) b5 H
[/ I( d& a3 f$ v  d
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, G, E5 a1 O3 J9 C/ iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' d, S6 S& v9 Cset i (i + 1): g4 C$ V# p- |' ]. R* F5 h3 [
]3 n& I" c- m, w, [  e5 Y
let k 0* ]8 ?" Y% |! R2 g
let new1 0% v5 q8 n5 W6 t5 x$ f$ _* ?
while [k < people]" S8 H, h2 o+ J  T5 I! @) o3 \2 B
[3 l& {0 k5 A( K; R! d! @
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)6 d9 @" J  A" P5 A8 @& `
set k (k + 1)& L6 x1 K( Z$ M& @4 {7 d
]( G6 B; `3 q! L) B7 z* P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& y1 o1 a& c; @) |* c! nset global-reputation-list (replace-item j global-reputation-list new)
4 G" ~2 v  P% q1 ^# H( M5 W- B, Oset j (j + 1)
1 {0 T# i0 B% W$ m, T]
$ x) T0 V5 V1 t" h/ q( Gend+ N3 Q0 J0 N3 I; a3 j+ c* @2 t& V- v

# E) H* C4 \" g+ y
4 j# ~( c4 g' l6 n. ?5 v
  A4 v3 o- R( y+ p6 ?to get-color
4 S' P) h+ _& o! G/ S' A4 \) a: [8 \
set color blue
1 j5 M. B" E5 Z* b( K/ _- y
end
) s( t4 @: d1 y# O/ p9 r# Z) Z2 u# j* L7 B- {* W% B
to poll-class$ e5 a+ Q# [% h. e. T
end6 c8 V. p& B7 m# K4 r' d

% x' q4 F- ]$ ~/ Sto setup-plot1* R- p+ l  f( G1 n5 H
6 K' ^. @; I- A. C; i- y  E+ R- F
set-current-plot "Trends-of-Local-reputation"
" |* J% k* l  h) z: ?5 A% }
5 b! w- y$ }; k1 r$ I4 F
set-plot-x-range 0 xmax

) V& x% X. ~) U, f) C4 h! N2 W
set-plot-y-range 0.0 ymax

# r- u& J( B& g  @/ vend
" _5 t/ j- G2 V% ]+ O" p. ?+ n+ ^9 L  @" D3 @) D
to setup-plot2: K( \7 p8 Q( I6 y
4 b( k1 i. W  U& R) V$ p
set-current-plot "Trends-of-global-reputation"

* c4 T  P3 }2 a) L- h; l2 ?. v2 X& N, ~4 _# B  n. b
set-plot-x-range 0 xmax
; |$ q0 ~" \) u5 Q3 w+ n  ]

6 X! G) ?, H3 t6 f+ o1 \* vset-plot-y-range 0.0 ymax

; I9 W% I2 F  u- u1 ~end6 x: j" b4 ~. w0 ?; c# p
' u+ x2 t' Z6 L3 c- W- s5 \0 ?6 I
to setup-plot34 P/ [& T$ n& B; l: c
& _) Z2 U2 H' w; }' I
set-current-plot "Trends-of-credibility"
; q- h6 S! H' _
8 n1 G! ~: x$ r' X6 d% [: j) d: Y
set-plot-x-range 0 xmax
. I. U* g( h- J# F2 }; H

8 e6 F7 `. d! m( _) h; m$ x" Hset-plot-y-range 0.0 ymax

: H9 E! T, z8 z& ~2 x- W- ?end
9 L' e' x. K  \, X3 s9 }8 l2 R$ J) k
to do-plots9 |9 W) l9 E6 L# Y0 K) W- a
set-current-plot "Trends-of-Local-reputation"% E2 K* ]4 @, ]' d# ?0 z
set-current-plot-pen "Honest service"1 ]9 y5 |5 C3 u
end  w' n7 S0 [1 {$ T% W& C8 A: L
. p+ b& |$ e; ^/ j4 n- G9 E3 S" l
[ 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.
# P, a9 b( c, h2 \5 n' m, D
4 e9 T2 I5 s7 n6 \, Y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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