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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:5 @% f4 k1 k0 H5 M
to do-business
! ~( n- A; W$ o" ~+ z rt random 360
, m9 N4 N# h' j4 f' N1 o* m( G fd 1
; e0 w5 ~4 a2 ?4 v7 }2 J ifelse(other turtles-here != nobody)[: A3 s9 Q5 i1 u( Y! j( q" ]
   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.5 _) F+ q; g( d5 k
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 p6 e2 F, F" R' k+ Q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& W/ W; R/ u7 V   set [trade-record-one-len] of self length [trade-record-one] of self
9 K0 P5 v. A9 {   set trade-record-current( list (timer) (random money-upper-limit)). q) Y$ g# O) i) d
4 x; q  Y0 R% I0 a2 F; V8 |
问题的提示如下:
4 G3 ~; ]/ v) R8 S6 @; U* t! O% g2 x! E3 w7 U
error while turtle 50 running OF in procedure DO-BUSINESS
# `! k9 Y* O1 D5 V* @  a0 v2 F  called by procedure GO& F4 i& Z  w% S5 z/ {' h/ h4 p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
' r3 |( L/ {1 i
(halted running of go)
0 I0 B  l6 ?! w; {. n
5 X! L; j! x* Q$ I- Q% f' n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~~# F2 j1 D! Z& w" B1 W7 A
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
' [8 [: t0 h' {- q7 @, Oglobals[
' e4 V" S/ S8 x0 k4 }6 d  Z; fxmax5 X# ?  U: G1 u+ }
ymax
) C% S0 s/ Y6 [5 _% J0 L1 Oglobal-reputation-list
) Z) I. b4 v' G' w8 P. I
$ y8 M, ]" n. f' E( Y5 d9 s; L! {+ m;;
每一个turtle的全局声誉都存在此LIST
% D0 \4 H- y' S9 q- Qcredibility-list, E' c1 t4 K, F1 V9 B: @
;;
每一个turtle的评价可信度
2 [5 r! U/ y4 i# X" U7 bhonest-service
; Z. i3 L  X' i6 ], g4 cunhonest-service
! g" t4 f& P4 m) Qoscillation) {. T0 F) P0 H* z& o
rand-dynamic
8 z/ j: z7 q( _4 \  R], G9 H4 a2 S9 M+ t
/ A. m- n( v" \' ]8 d) j
turtles-own[
" e$ f8 G; |+ A6 l) H9 C+ Otrade-record-all4 P' n8 F9 h& J/ j' O* b: Y0 d
;;a list of lists,
trade-record-one组成0 h: G4 z# Y7 ?8 S, D
trade-record-one: p* \, G5 E9 @8 d3 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; i( ?' E' M( _( R9 k* Z

& I1 @$ U3 R0 W;;[
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]]: i1 W* n$ S" P7 h2 z' i  z% r
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]
4 U  F& P/ _3 a, B& \/ Z0 Mcredibility-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) O7 W" g% v4 w$ T/ L6 m, `
neighbor-total
; F" t: v' }  V8 N. o. `5 T+ J;;
记录该turtle的邻居节点的数目
9 v  d7 @- F' d0 ttrade-time
2 i  [% ]6 y9 `) K) b: t5 F;;
当前发生交易的turtle的交易时间
6 a1 T( \& i" i  u4 A  Sappraise-give4 \& R8 T, m0 L9 s
;;
当前发生交易时给出的评价5 d7 U, m; F' f' V8 d! |
appraise-receive& v8 \$ b$ f3 e/ W
;;
当前发生交易时收到的评价' M2 u" t2 X/ B: d- ~* A
appraise-time
6 v/ F3 a4 b3 m0 z4 C0 A;;
当前发生交易时的评价时间
3 I- N: y/ }$ h  V" z) Ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉9 M& L5 j6 ]( r1 k/ t
trade-times-total3 M- B9 j! W% q$ N& f6 _
;;
与当前turtle的交易总次数+ X. \8 A. p' F
trade-money-total
( i" ^1 o: Q: v; f;;
与当前turtle的交易总金额
6 A2 {' D3 ~! T% t+ n' r; h! ^local-reputation
& r5 Z. m3 p6 p# A9 Uglobal-reputation, Y5 |- m& g9 A# R* V) O
credibility
+ ~; K* a$ W6 j: O* X. H;;
评价可信度,每次交易后都需要更新
4 i2 `# {: j4 r) m# `credibility-all
( W/ K1 f8 V" H) Z;;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
( t- h  J/ r0 _5 j$ T7 N6 N8 T4 ~
! Y# `& z- K8 S/ ~;;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+ o. w  A$ D' j  N' r0 \3 [4 e
credibility-one
( [9 p' f. x9 R' d/ O! d;;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 Z  b/ Z: }2 ?2 bglobal-proportion
+ B, C% Q+ e; g. l3 `customer
# E8 a5 Y6 E. Icustomer-no) R% M, ]/ z. M9 g* [# P" w# P
trust-ok
3 u  o2 y7 s, _trade-record-one-len;;trade-record-one的长度) K& X6 Y: h4 Y
]6 o# U  i! ?2 V) Q' E4 O
  ~% u+ h, ]) Z- [5 E" ]
;;setup procedure6 ^% Z" u0 d0 k+ [; J

4 @' r/ i# G4 ?) p( F) Q+ \to setup" f( E" J, E% G% s4 G' M3 q
; _$ o! ^. T7 X9 w7 p+ ^8 c
ca
& H3 c* ^: ^/ k( |1 j! w

8 G# ~, l3 U  M) T; Y0 |" H6 K1 Jinitialize-settings

3 l4 x% W. G8 P; q, ?) Z& |, `- n6 f
9 a+ w6 ~7 x# J' \2 ocrt people [setup-turtles]
+ w' Q6 C! P! B! R, S: T' [8 h
, J. e/ H1 C1 h7 d) I  q7 C  R8 K
reset-timer
0 Q( r1 p( T0 ~( S1 N, |. ?

+ z) k- y( v+ t: fpoll-class

) o9 ]0 B; I1 X1 O
/ `  R2 P6 j% qsetup-plots

: Y4 @! V1 c0 J8 ~' y  c4 V$ w/ @2 b' H( A8 l' T  w
do-plots

, W( L7 ~: s# \  s/ B. G, Gend6 g# N( M9 T3 U- n( e+ p

' b% v) z( L' t$ L# b4 m1 L" Lto initialize-settings7 {3 r& e, |1 V  M, B

! Y6 r7 R. w$ b0 _0 o7 eset global-reputation-list []

) ^1 M0 V8 e, h) ~* k9 o7 A5 X+ e  X/ ?  |- ]
set credibility-list n-values people [0.5]

! J# j/ w* G0 \7 {' ?
% D) b: t! {) [  d. e) S/ t  v7 pset honest-service 0

2 d# Y/ U9 }5 g3 L# [
& E6 C# f2 J; [set unhonest-service 0
' W: E/ ?# Z3 G
" n; V9 ~# P# |
set oscillation 0
+ }. r: U! G! S/ C& a

+ B: y$ O' r+ D' E+ m5 y- Tset rand-dynamic 0
9 A& i8 o2 g. n/ ]0 o( b, b
end; g1 `! `# [. K) Z: r/ H6 V
+ w4 g1 e, ~4 Y6 F1 B' W) Q
to setup-turtles - `+ D) q* r6 I" }' r( p$ c: [: V
set shape "person"3 a* y. {) \( o- x4 G
setxy random-xcor random-ycor
. C+ p0 U/ d6 X4 aset trade-record-one []
) e# V4 z* g0 c, I1 [
! A0 f' N8 ?9 U, z' d
set trade-record-all n-values people [(list (? + 1) 0 0)]
2 w) }  o) Q8 a9 h4 ^9 {+ x

1 _& O. N* D# J- Cset trade-record-current []  c: w. t) k( j8 x; _, I" |, u
set credibility-receive []
/ D1 L/ [9 x$ a7 o% O, e/ \set local-reputation 0.59 m$ S$ U2 o4 a) D; M- L* d
set neighbor-total 0
+ F# }7 Q/ Q7 h2 ?& rset trade-times-total 05 y: O$ b: y/ l: H7 O( m* m
set trade-money-total 0) r8 U- ?" N1 e' i
set customer nobody9 C- d* U/ `0 q: \1 b' u3 w& b" ?8 x9 s
set credibility-all n-values people [creat-credibility]9 V; D) @3 r/ U
set credibility n-values people [-1]& h, a1 E6 U$ o' B7 o) ~/ H$ \
get-color! n1 `" U) x7 x9 L3 R

( v7 {4 z3 \# V9 k; \$ x" ]! Rend/ L. p/ M/ T! _, ]5 Z/ F4 o& }) }

8 O; ]' ^" ~  r0 n0 Z! cto-report creat-credibility
( `" S+ w% c9 m( ^6 @$ p$ J5 xreport n-values people [0.5]
: H0 j0 v- Z: Z7 v3 @5 P+ p+ |+ Aend
% f+ J1 T! Y- c" C; A; P9 S2 ^: ^$ P5 Q4 Q6 }4 u  D
to setup-plots
! T& T- a; d( }& i' `7 ?" V3 c* B+ t6 c3 D9 l' L3 E
set xmax 30
/ }! O0 S; c+ a. A% f' R+ t/ v
2 p. w* Y' j% k" q) C1 ]. M- X
set ymax 1.0
# s. i- ?& U( o. t! M
7 n( Z. m% X. P! c  L
clear-all-plots
% ^+ |7 U6 f3 ^1 O3 ]

4 u% F5 h% _$ x$ l9 D* W9 I) A3 R5 wsetup-plot1
( @4 S" `  b. o/ i; d
1 S( a: ?5 `" ^
setup-plot2

) M- J+ y. U2 U! |! K5 `
- c% m7 U* I/ n. S4 Psetup-plot3

" b" W. S5 M8 z2 h2 Q! N4 X2 r: Vend
: d9 ~9 w, ]; n- v- j
5 ^, X# R; U% r; B' W6 Z" O$ ^/ D;;run time procedures
- p3 {9 J& E6 ~. \
) a7 s* j) y, m0 Hto go1 \/ r8 e! c6 N( ]# M, G7 c. i1 h8 A

/ j* P3 Y2 l% fask turtles [do-business]

! b" ?5 l  I# k7 f$ T- X* ]end
6 a: k) p* w+ h0 w- w  y
* g2 y- A# l! N& E" q  P, vto do-business 1 e! j* C# j7 z! R# I& c$ S
2 m. G6 {, M5 f  a+ q- o( y, T
* j( j! t% Q! K0 j8 E1 z1 n' r$ t
rt random 360

. F6 A0 C9 b; _
5 f4 V/ L2 `! `6 C% Ffd 1

# L' @& H7 z" W' ?& B/ q2 G7 C, V! b2 _3 u# c" [( g& b* U
ifelse(other turtles-here != nobody)[

, Y2 A1 g+ z9 i; H, u) g+ i- K6 n- f1 b. c: X. Y9 t- P6 ^
set customer one-of other turtles-here
& _3 R0 t; I* X7 I. W  d
3 h6 C7 F. ?1 E& k+ m
;; set [customer] of customer myself
% L6 u# Y7 N% V3 _. B5 [+ L$ s

: _, t! Z8 A- \) |  \, _: j$ aset [trade-record-one] of self item (([who] of customer) - 1)
. Z+ i4 U2 e# z; S/ s4 T. A( B, f[trade-record-all]of self
" C" b+ I% T4 s" G;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 \4 F  Y2 y1 [
9 d1 [  @3 R* c/ r* W
set [trade-record-one] of customer item (([who] of self) - 1)
3 |! n# }) j- T! W: E7 d# b7 x" d[trade-record-all]of customer
. [5 }  q# e) m
) ^  @7 j7 R; l3 F) @/ X- ~: I6 t, d1 Z7 c
set [trade-record-one-len] of self length [trade-record-one] of self
( ~+ c2 s# V0 g. @  I
% I1 f  P% ?4 K$ P& c. |0 K* }
set trade-record-current( list (timer) (random money-upper-limit))

2 S+ C' D( y3 h
' l/ |& J5 a2 O3 P3 ^) R& O; Dask self [do-trust]) N7 ^4 u9 x/ `5 v0 s# V
;;
先求ij的信任度
% b( b8 }1 p1 ~% Q4 G* a, j1 {" h7 E/ G3 n$ \& _4 b
if ([trust-ok] of self)* d: C! w* y. M! w
;;
根据ij的信任度来决定是否与j进行交易[+ ?6 }! \/ r) n, F2 W+ a3 q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
( A9 ?; k( ?6 |5 B( v  z
4 W; I1 ~4 n) D+ S2 a; W2 y; [% S' W[

0 z, R" b. Z( F
, c6 R( {! \3 N$ i* s' i: Mdo-trade
. A8 r) z4 g& D. i' N4 a0 q

) [/ x* J/ d. Eupdate-credibility-ijl
" G; \  H) d' ?' ~* x4 T
1 R. }. ^- v( R8 l6 c
update-credibility-list
/ N: D# B/ ~) z7 e3 X- A* a/ `
/ Y' E$ g' x; d
$ [- y8 t+ X4 X( B* q* l
update-global-reputation-list

; v8 w6 m7 Z- @+ ]% ]
7 w1 o* e  E9 {# |+ Opoll-class
& X7 ?+ U* N. S2 |. O

0 N5 n9 e% r6 n2 f5 n. W/ H$ _get-color

" [+ z6 }) ^' K1 W3 ]6 O
0 ^! N$ {- A6 T- y]]
( H! K5 S2 d8 ]' {4 x" s  t9 g3 ?8 h- \+ }5 I& [
;;
如果所得的信任度满足条件,则进行交易
3 z' [" @, z$ [2 v; ^# V
- [# W: [# f, I[
( q# M+ }0 X1 ?% V

- w% S: Q4 R0 }7 q8 w) j- A' qrt random 360
8 n5 L* O  D5 w; O* b7 ?

8 N; \6 \; M6 b$ r( h2 tfd 1
8 K: k5 Z" u& s
& J7 J8 _  x$ [% w' w8 B3 L
]
0 m# A$ F+ u9 O6 Y

# \6 \2 e6 s9 v# `# yend
' m7 Q8 A& k4 C& w5 t$ X
- L1 A+ T6 `- J7 N7 c0 N; ^
to do-trust
8 E2 z; B1 i+ J: n! p* ]set trust-ok False
. u/ i3 w; r8 g- C3 U
3 U5 M, q4 V. J  @$ Z+ l

7 \0 _/ {6 W* S9 k; x" tlet max-trade-times 0
5 @1 L! g8 s6 g* g" {) A. yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% ^2 Z& q1 h4 c6 A5 E; ?
let max-trade-money 0, @4 P. A1 N, s8 M
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* b) d) j% A& {3 p! z4 \( ^& rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ M: @3 m7 @1 @& g
1 O- d2 v' D) Z
, Z! `/ s- p1 W& Y
get-global-proportion
* n" `& y! @# O5 dlet trust-value
# S& c- `! j# h$ \* B- }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)

9 P$ d# d1 @# Z3 j0 q; I1 Cif(trust-value > trade-trust-value)
- j5 R5 H( ]4 v7 g( a7 b[set trust-ok true]
! \1 l5 A4 D+ [6 h1 T; z# Zend" S! m: _) Q; V3 [

; z" w" C0 n( ~( Bto get-global-proportion
( y) R0 b- K- ?! D% m% tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 ?; z- e' p6 ]4 B1 B1 j[set global-proportion 0]
6 Q1 N7 q# m' v/ R2 Y, L[let i 07 r7 X% i: @7 ?( q
let sum-money 0/ y" f, R6 N. d
while[ i < people]3 ~. y( F9 r9 M+ ]5 N: j5 g4 |
[
; j7 n5 }' \0 q3 {if( length (item i
9 \. z& Y  {# T* i8 C[trade-record-all] of customer) > 3 )
9 G1 l- _( P) Y, _0 W0 e0 G. S
[8 W. e# V! a: C& I0 |  m
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 [5 o) t0 r  e( _]
' W4 W! T$ B& h. ^# D2 |- q]
' O4 u# H$ k+ G& Y7 @! Mlet j 0
1 G# q+ ^' p. a- a9 E+ Xlet note 03 N7 ?. a' Y. N( c: t3 {- S
while[ j < people]3 ?! m6 O+ q. A4 m0 _
[
, N1 t4 z  a4 K5 F; w9 o! lif( length (item i
: N* \  n0 H# I! X[trade-record-all] of customer) > 3 )

6 G# y  j6 u1 J% e' a* Z0 R[
& a/ N* Y& ]# `. P) I; X) Q9 mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 U! T: T. P- Q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. E, S9 K  g, O7 b) S- w[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 c, V8 B8 z2 t0 D! G. X]! f' n! w) g! G6 c: F; q
]  c  m2 M6 V1 L! O  b' q
set global-proportion note& U, v9 \8 q) P, b
]
( _; c9 ~0 O* Iend2 q: B" d- m: Y  O3 X+ k

+ [4 c. N# h- F0 R/ Zto do-trade" G6 J8 |" U- X: D8 t/ D1 k
;;
这个过程实际上是给双方作出评价的过程
) o: C2 u/ T* v7 x3 Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ \- e, T( P- g& b  T+ q) m5 v5 K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& i5 D% ]$ S8 Z' D; C. k8 O; }set trade-record-current lput(timer) trade-record-current
2 Z+ X2 G3 R) S6 U% I;;
评价时间
' O  m/ h  p" U9 J& l' M$ Sask myself [3 R! ]0 [! b4 J
update-local-reputation
1 V. T7 C+ M; J4 X1 l- l1 Vset trade-record-current lput([local-reputation] of myself) trade-record-current
& Y8 Y7 g  Y, j9 `) c]' A2 l0 i2 F% f
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ N( x2 a* s. x5 h! z;;
将此次交易的记录加入到trade-record-one9 b6 t, L; ^# U
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. G1 S' s! I+ vlet note (item 2 trade-record-current )
6 I; m: c! [- a' V; |2 g# Xset trade-record-current
) C. _0 f% o' Z" R- d(replace-item 2 trade-record-current (item 3 trade-record-current))

/ Z/ m6 l) x4 V% eset trade-record-current7 i" t, V+ n2 V8 V
(replace-item 3 trade-record-current note)
  ^' l5 `6 v" B5 i
9 t% a5 G* l6 p8 b8 u

1 D5 U0 a" p6 Pask customer [' r: L# m8 c; l* J
update-local-reputation
+ Y- F+ s" k3 M# l- w- d1 }& _set trade-record-current
, P/ T, G# T3 }$ u(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: K+ |8 Z7 M. I1 @, G! ^& H( H]8 u. p6 F; E- j$ o, y3 {& G

" D  ^9 y: d9 r( i9 k4 J! z2 c3 \0 _

. ^* w8 }6 D- K7 X) A5 sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( T+ I- g4 m6 W6 |
0 U9 c& [2 e8 n+ n9 m( \/ f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ `" ^- a% x( t& H" E1 f" `) e
;;
将此次交易的记录加入到customertrade-record-all, v& ~, y% }: o) M3 J
end
) [) j$ C; [; g. p
( S2 r) d( h5 R, d  l0 ^/ ato update-local-reputation
+ j4 g  h* U1 [% u  ]) tset [trade-record-one-len] of myself length [trade-record-one] of myself
9 n0 F; m( S9 ~# U8 _. L) s/ m0 y; U& R$ b7 E1 k

/ U' y1 {) s' ~8 M;;if [trade-record-one-len] of myself > 3

' |6 e5 c/ H5 t: |2 A) M) ~, @* nupdate-neighbor-total
1 C& S* G5 I3 l! O1 Z* U;;
更新邻居节点的数目,在此进行
' ?0 a/ |8 \1 t- Q4 R/ V) Vlet i 3
: H- u! B: x" y6 Nlet sum-time 0
1 u9 R3 Y$ h- ]: xwhile[i < [trade-record-one-len] of myself]
* H5 `3 E7 B3 y8 Y: A0 e6 w9 f[
4 r4 n# f9 }# t0 e) v- @set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 c4 p5 x9 |" W; ~% X- M- V  |
set i2 N) }0 U. W8 _. Q! `
( i + 1)
. o; U0 b, n0 Y
]
, n4 D+ M: \& i( V, u6 g/ O1 I9 jlet j 31 v, a) L4 y& N- R
let sum-money 0
. A) r' F8 M6 L' ^8 H3 cwhile[j < [trade-record-one-len] of myself]1 G0 N) L; ~9 H. U- A3 R. B
[
' g* j/ U4 ~; m# Lset 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 }9 ~8 ]% O# Z) W; Wset j
& P. d% M  W$ s9 u* I, v( j + 1)

1 y5 W8 X+ p9 ^- B5 c. m" S9 }# []
8 g) T, t; ~" Z6 r8 flet k 3
- T" @' @. A; R4 M3 Q/ \let power 06 v7 K$ S1 n$ e5 p8 X- Y2 e
let local 0
' [4 b+ ^+ f3 [' \while [k <[trade-record-one-len] of myself]2 t- v1 v- E% c5 F/ r9 g
[
" w' [% g5 d4 H: a7 d; J6 T% f* Mset 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)
( J% O3 e# \4 a( o, Oset k (k + 1)6 @' Z3 c' r7 S- ]6 o
]/ x: y* A- C2 K4 X* \' o2 @# G
set [local-reputation] of myself (local)3 o. p/ i0 O4 _/ l$ ?
end
8 Q2 O3 `5 B/ i8 g% |/ R# m( m+ l" E+ H' ~+ y- X, d
to update-neighbor-total
, t/ M/ h: |1 b# ^: o& K. I2 J7 o: s2 z! ]1 u# ?
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  X* ?* n0 r4 C7 [4 v: }

! P3 t/ @* |8 j3 N9 Y+ Q
' K+ }- ~1 l7 q; Z9 E* Y
end
( `1 N2 g5 z' Z/ c7 L/ P/ ~1 a4 H1 g' H1 I
to update-credibility-ijl
2 e. ~2 O2 u4 Y6 x$ e9 R5 I* W. ^: H+ O! d9 ?
;;
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。
# t! o$ o/ D7 R6 r  s( llet l 0) m" g: ]) ]) m. r7 U" G; P
while[ l < people ]7 p6 W3 P$ u; x' y
;;
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( p1 i/ c, I) u
[) _% h) n9 @8 d! ?: I7 b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 v9 g) X  }* e% e* [) x
if (trade-record-one-j-l-len > 3)
" g! Z6 N6 t! D8 F: L[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( G' e# z, l# a7 u9 H
let i 3
# G, P0 A* \1 D% n' Y, v6 X7 \let sum-time 02 T6 X% F0 g( B; O1 B9 c. X+ O
while[i < trade-record-one-len]! E* w5 @  Q, c* O
[# d% k& z& j& V3 Q: Q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 y, X5 {' w5 l2 Q3 gset i
# Q; g! l2 c0 O4 u2 @; C9 f8 p% {( i + 1)

" ~7 N( Y* B( o! C2 g]# S; r' E. r6 c+ v* c: W0 h% i! D; A
let credibility-i-j-l 0
' _; w3 i: R: X6 {( q;;i
评价(jjl的评价)  Z+ {) W; O! Y% G% T
let j 3
( G7 }- P) ~  Zlet k 4
" k" e& ]& [' H9 j& w6 x4 K8 {+ xwhile[j < trade-record-one-len]
8 d) k; t" L+ p: r$ O. m. n[4 u/ N1 ?. e$ G
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
* T' U- W- A& j4 |- aset 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)
4 T3 {* l* H  s: m8 gset j! m* H9 T+ \6 x+ @4 t8 g" z
( j + 1)

3 c7 [+ ~+ f  A" o$ x+ |9 o]: I& b$ i& c# _! @8 ]+ T! c7 \7 _" ?! D
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 S& g: y5 d" m* |
: j7 K7 L0 t5 ?

" c3 @+ a# I& n" n9 |0 C9 S9 v1 ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: S( Z5 M9 C+ O8 l! n; E; r;;
及时更新il的评价质量的评价5 R, A4 G. f8 Z4 [  N7 g
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( Q& {9 l& i! U, G7 q7 Uset l (l + 1)6 J' V+ u; P2 T, N" l7 a
]
) ?, {# P$ E5 ~" I! U; e" k: }end
) K3 m# j) b2 u. g. P- k3 [$ v% c0 H3 V4 L/ s
to update-credibility-list
) i  s; [5 Z. b* g9 E4 P! @let i 0& Y6 U( Z" ^3 j4 |. F
while[i < people]0 E' w$ O0 F2 \- Z9 l) O
[
5 `; p& v+ {- v3 |1 Q3 klet j 0
6 P9 m' {! c1 \0 x- B# W% a$ wlet note 04 P# V+ G$ N1 ]7 H& q
let k 0
2 r2 [/ ^; q* Z2 _+ p/ ^2 ^: o;;
计作出过评价的邻居节点的数目
7 e4 Y# S9 p/ D6 n+ @5 Kwhile[j < people]
2 L" P9 \; z+ \1 K8 ]9 e[
( i, ]; P+ }' s" }. lif (item j( [credibility] of turtle (i + 1)) != -1)# H" L0 O. W  \; s5 @
;;
判断是否给本turtle的评价质量做出过评价的节点& h, e: G- }8 n7 K
[set note (note + item j ([credibility]of turtle (i + 1)))  c4 d6 j" Y4 n
;;*(exp (-(people - 2)))/(people - 2))]
  Q  `$ j+ o( m6 ~9 t) j
set k (k + 1)
3 f$ W& O% E# l$ H' I]
% T( {$ _& a) g9 V0 C( z% X+ kset j (j + 1)
% x1 _" I. n$ [  n1 c9 c8 [  C]
( }3 }  Q4 v# _0 E  {set note (note *(exp (- (1 / k)))/ k)
# ]. k; x% w9 qset credibility-list (replace-item i credibility-list note)) l3 C& [  g( l6 s+ l* l+ y
set i (i + 1)+ a' b* M- I# W8 h! F8 m; ~" `
]0 m, G2 i- o8 z# p8 Q& d: q, V
end
/ E! |  |1 c8 @6 Q3 D) a+ E7 `1 M& _# w4 E
to update-global-reputation-list, C: H1 P) s; x% d( I- @
let j 0$ K1 G/ k2 _) P8 `
while[j < people]
. m. P8 o2 r; f" x* F[
; s* [, K7 S0 E( A7 r* |9 nlet new 0
$ }( X2 b6 @& C;;
暂存新的一个全局声誉
' K( q, z+ v! G7 {6 P9 u- ^let i 04 Y. B& Q7 B# X5 R$ c
let sum-money 0
+ b6 [% b0 H8 K6 a/ F3 ulet credibility-money 0
6 U5 O; S% a) O$ z3 y2 F7 Wwhile [i < people]
  G: ]+ }2 P  e; z1 Y1 A7 Q3 S( h[3 g+ q) w) g1 G$ Y* W7 K
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 [) P& ]1 k4 g3 u" cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 j6 W& c5 l0 _( v* ]set i (i + 1)
) z0 [6 e, l+ ^7 U  K]
9 K5 ]6 o& F- i; |' H( Y8 @let k 0
1 L) a# J  F% X' g5 @let new1 0
, n) ]: I  l  rwhile [k < people]9 {* r- u4 Z  c1 E+ }0 I7 C
[/ E$ k! j! \! r
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)% B5 y8 u. D* |9 r! ?4 T
set k (k + 1)
  }. n! h' I: B( v3 H% _]5 w8 [1 b6 @  A5 g) }2 k5 t+ c
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- F" ^. n  J+ \$ l2 j" E, ]" hset global-reputation-list (replace-item j global-reputation-list new)
8 f4 t0 ?1 e: K2 g! }1 pset j (j + 1)
& ^5 X9 T" v+ ?  @2 r6 a]- A8 b7 k: h0 b# y+ f2 I
end
4 F3 r* b( C# \" c6 l* E% D, R. [/ o
8 n$ E9 Z# r8 _. ~
$ l' Z; D. t( e6 L/ z7 W
to get-color
& O1 H2 L4 `8 |! `
' i- d' k" D9 A; Bset color blue

) G; @. r( ~- R7 x. {/ ]end
9 N& F) ]  m: }6 Y' `
; Q* ~1 O/ L; F* i5 Wto poll-class. Q3 P7 g; T/ L8 H! p
end
! F' Z: J; {3 r- W/ U
% w# G+ y1 i. `  b1 Sto setup-plot1
7 P  b. t! l1 D- j. M& u/ y
0 T. ]# E3 C$ c* Q* _. mset-current-plot "Trends-of-Local-reputation"

: q6 U) L* c1 B
- V7 p9 a- x# K, q1 Dset-plot-x-range 0 xmax

- ]- R" p) ]2 U$ P* X- P- \! m7 C7 P
set-plot-y-range 0.0 ymax
3 H5 W/ Y( u4 p, ~" Y: H
end$ D' e; A! g7 x: {4 T6 r0 |$ N( x

! k- S8 s( X" B1 jto setup-plot2+ j* b5 K9 B0 L7 t
# R& J- k: Q& v) X8 d9 ]! F
set-current-plot "Trends-of-global-reputation"
- E# b9 w( @. {$ R2 g

: C! `2 n" `* l" o0 W# hset-plot-x-range 0 xmax

* C/ c) [1 a& S: {" E- f% h/ J6 q8 q- a7 w0 a8 G
set-plot-y-range 0.0 ymax
3 x% c! y& @2 ^3 g3 E- `  D6 ]
end
- F4 x8 P7 Z* Y: I
) I" m$ M% G" T% d: ]! Dto setup-plot3
& J% W8 Y. Q0 b" Z# S% g9 J/ c) J8 w$ L! v+ r2 ^. W% \
set-current-plot "Trends-of-credibility"
+ m+ e2 K2 o" L* l- n, S
: j8 R- [/ B5 m# x- k
set-plot-x-range 0 xmax

: S' G7 A3 E) \* K0 R+ Q, f3 H$ T% O* ?3 m2 {5 l# [
set-plot-y-range 0.0 ymax
" m5 G# |0 b; a  k. f' y8 K
end/ o5 G9 i4 M9 J1 U. E
2 W. \2 w! o; ~2 |7 v' b. s
to do-plots: `; b) l# p, f4 [, M) ]
set-current-plot "Trends-of-Local-reputation"
# s: ^# o2 g" `' Cset-current-plot-pen "Honest service"# o" W9 n4 r2 g1 K3 M9 Y
end
; {1 m' Y% o' N" D: d/ S; \; C; q0 Q. e& ^9 a. l! y
[ 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.
, R4 f4 L+ A* F, ?9 m) P/ `
2 {+ [" W3 g) X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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