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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:9 [7 F6 A' g/ k* k& l) D5 e6 ~
to do-business
% Y1 Z, j9 _* L: V+ M rt random 3609 G/ W4 T. Y+ E4 V3 x
fd 1$ @$ w  S0 |/ X
ifelse(other turtles-here != nobody)[' C5 K+ g3 J* ~: J" D; e
   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.
/ I* M3 `  E2 ?0 u   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " k6 J2 n2 g  Z" C
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 Y3 W1 e+ H' g5 i: F   set [trade-record-one-len] of self length [trade-record-one] of self
9 b7 M4 D' o# H6 W. J, v9 D   set trade-record-current( list (timer) (random money-upper-limit))
9 `9 c$ Q: K9 M' ?! [6 Y
/ E6 G) ?5 C, h6 C问题的提示如下:5 V$ E! b* Z* e% x$ Y; i
- o7 C& t0 h& \$ c( N
error while turtle 50 running OF in procedure DO-BUSINESS& J# x1 x/ `: D: N; @) m4 H
  called by procedure GO  R* `7 _4 m8 u( ?( N$ b+ z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.5 B' r' z" ]# Y% |) d! {7 G
(halted running of go)$ b+ n5 k) R) F# R

8 e. t5 a1 U5 X% T/ N# Q, e3 m1 z这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
% f" ^0 w; l  x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  ~5 G/ f, _  R" Y; |& Z
globals[* X5 Q8 Q: f8 T2 R
xmax' V6 s% h8 }" x: F3 P) m6 ?7 s
ymax
0 v4 E8 `6 i/ ~0 m) Dglobal-reputation-list/ O$ m- N* C  a9 ~% M! @: W9 d
6 n  O) o- y! o' p1 N: D: k  C& U
;;
每一个turtle的全局声誉都存在此LIST* U+ M: Y5 ~  e4 O
credibility-list, k  e0 q* N5 o0 D; U6 x
;;
每一个turtle的评价可信度
$ f! Q7 n( `3 xhonest-service
) `! u' b8 M( r) l  o+ vunhonest-service8 ^0 h" _$ F& ~
oscillation  @9 s, t% h$ N" Q3 n9 b0 h
rand-dynamic! X3 y% w5 ?: p2 K$ s/ Y
]
% H7 i+ F0 C( @( K/ k
( n* ~% ~1 E6 D2 iturtles-own[# M0 d( q0 f1 {9 e1 C
trade-record-all8 j" b9 q6 z8 @( U
;;a list of lists,
trade-record-one组成
+ z4 k. G& \+ I" R9 a6 l9 Jtrade-record-one& Y- [5 d( n  _! x3 y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; E0 L2 W6 Y4 r: G9 a) y/ N6 {; a1 Q

1 d9 c% d' G0 o( {5 N;;[
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]], |5 m9 K: V2 p! q
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]
- \6 C7 L4 G# I9 _+ ~4 Acredibility-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
: ]( J* j* {% s" Eneighbor-total
# O3 `0 s% ?$ Y) o: b;;
记录该turtle的邻居节点的数目
1 U7 l' _# D6 f' D% ttrade-time' ^$ x# v* C  ^) H5 j; W
;;
当前发生交易的turtle的交易时间; {6 G, W. G2 }# }; H
appraise-give1 A8 A- _: Y, G) ~: _
;;
当前发生交易时给出的评价4 u3 b6 n: {0 s3 k( g
appraise-receive. k: ~* g5 H% E" |9 a
;;
当前发生交易时收到的评价8 R, t( z4 O5 A3 }/ e! B* j2 S9 m
appraise-time
% h4 D: V. y* |) n" n;;
当前发生交易时的评价时间
8 [4 v) p  E, a( x/ Z1 _1 zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉3 c- z9 t0 l& p# I3 M7 o
trade-times-total, d: N3 [. h% _9 G. d* v- p$ q
;;
与当前turtle的交易总次数
" G% I5 w- B1 z& ?$ c, qtrade-money-total
. P! `+ B1 p* N$ @;;
与当前turtle的交易总金额, F) p  z5 w6 _8 g
local-reputation
/ G) S  [" V. _3 y" Q! }. {global-reputation
3 a" k/ T: G" m4 x  wcredibility3 Z  Q* ]1 Q. d  k$ A
;;
评价可信度,每次交易后都需要更新" B8 m3 _% F- A* p9 f
credibility-all3 E# p# T  \5 g% 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& X$ ~) b* _1 e  p5 M1 T4 X

8 z0 ^$ b- l, f" {; l  v  Q; w;;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
( T( B  L& O0 f8 G: v* hcredibility-one
+ Q8 X, m  w3 a( d4 \;;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# f6 v& v! H# }
global-proportion
9 o$ \" `* P. E8 e4 M! jcustomer
8 S" b7 q, O4 ecustomer-no
" P. A/ \  P7 m& W# |trust-ok
5 |- W2 O/ `/ P- u7 Rtrade-record-one-len;;trade-record-one的长度6 M. |( {1 C( e, {
]
6 {8 G, [+ S6 S$ F* D+ V4 r1 U# a1 S4 \% _' X
;;setup procedure
  ~7 X& u5 ]9 c1 m" ^; F% _9 T% i/ V0 L2 R( D5 @
to setup4 j- ?2 G) E" n; n& S3 f! h
( N/ T; o0 j6 M4 J6 ~2 B
ca
' s* V7 A/ ?. O  {! r/ R! |; L

, U7 |/ h; E; c6 W8 winitialize-settings

! m' }# \; E3 d2 k+ e
1 c0 t2 W- ^8 Ocrt people [setup-turtles]
( r* O9 f/ m, w( A0 U* R( E8 E

; X. k2 w: n. z  w0 xreset-timer

$ h7 S- c* m% l8 U& M9 X3 O$ D1 z2 K1 o
poll-class
( o' k: u3 U3 ~/ ?# k# i
7 @3 s6 e- u" P. \
setup-plots

( B' F! S4 D1 H! |$ \) O# Q9 x, v2 T: M8 U4 }, a" b* Z' N# ?
do-plots

# `9 U. R# y/ N- d# f6 Dend
# c4 _' E9 x; Y! }1 F* z
* e5 M. O2 Y, J9 b9 [. j) N1 \to initialize-settings; H: A8 ^2 R* ]

0 ~2 H3 P% z4 rset global-reputation-list []

; {& }! ?2 ?1 f, h9 [8 Y4 l( d% U; T+ M, [# _
set credibility-list n-values people [0.5]
5 Y( v, _) q- J; W+ {
& G. O6 B& z/ Z- T. y8 b, ]
set honest-service 0

+ O: ]6 P. V8 R% S- R. H6 Z
& u: d: H  _4 Q* ~" X6 P8 Uset unhonest-service 0

  Z- A' p& Z% ^+ y* @- m
, m" m1 v- u2 n0 X4 R9 d5 sset oscillation 0

& c  t4 {) ~# L, y0 Z* ~2 O
! }% x  Z) Y( L4 g4 W( g% fset rand-dynamic 0

; `3 u, A5 Y& D/ @end8 j; C" K9 L5 ~
/ T( d' `; V  i/ }  v) S
to setup-turtles
& q- P' B+ \/ j) h) x- Gset shape "person"! Q* _3 a% d% Y2 Q# i
setxy random-xcor random-ycor
% a) \5 g, z+ S& `+ k1 zset trade-record-one []
* P' d- R" l1 O; p! c+ C
+ [) ?- f$ r5 z0 j' }' X9 F
set trade-record-all n-values people [(list (? + 1) 0 0)]
+ I% I  b' r0 L9 O! B
; ^' I# N5 D8 c: o
set trade-record-current []3 F) i) Z: |3 U
set credibility-receive []
9 S$ l6 p9 `5 Zset local-reputation 0.5: q: I" U0 I1 E" \
set neighbor-total 0! F) ^0 P  j" p, v, Y7 I" r/ ^
set trade-times-total 0) K% T" H8 ~) W" R4 B- z) \
set trade-money-total 0- N$ f. t8 B; ^% B/ O- F
set customer nobody" P& {- w% p$ v
set credibility-all n-values people [creat-credibility]
5 o7 X5 X: C: A& Fset credibility n-values people [-1]3 q) L: H: r& E3 d1 m
get-color9 K$ r0 a" _7 C+ S  p) ?# m
6 r+ H& U$ p" m4 f( V* ], r
end
1 S+ i( h8 {9 _) Y3 m7 B6 k7 X2 X( `5 J
to-report creat-credibility
' V  {0 J$ O; c7 h: Y; e. [8 Jreport n-values people [0.5]  l6 M4 R7 j. L# |; \( n, q
end
' f. {( I+ }7 E0 w6 r2 P
! m) A7 y5 s+ J- rto setup-plots
# X  N+ @( c- {6 }
$ m. X7 |1 f7 n* ^9 o. I* qset xmax 30
) \' |+ _! \. [5 ~" W3 x' h4 i
, L7 o* }& D. z- ]$ ~
set ymax 1.0

& @5 O# R% C7 Q& ~2 p/ W. H
$ _. T' W5 a: a: E. z0 yclear-all-plots
; k& `9 V2 O* V6 z7 E

+ H. q* J6 ]2 S1 hsetup-plot1

) n2 H! t4 l" y, F9 [3 w6 B/ P' `/ l
setup-plot2

* i8 o' i3 Z1 d; x6 F1 o4 e$ t; J! E- R6 z2 ^7 b* B
setup-plot3

! }" _) X" B/ Wend
& `( `: u% S( ~/ ]) u+ Q$ \$ o7 [* y; x- P. j( R: \7 w' X
;;run time procedures
( {# K9 i, D1 h7 t( I5 A
7 Z- U9 I9 i+ ~! {to go! e/ y, T+ g+ {9 f# y5 Y# X
' D' R* D8 {8 I; t% Y8 |$ d9 J
ask turtles [do-business]
, E1 U5 x/ Y9 g, a% e
end
) F6 D2 O  j. E2 y- @
4 z; x$ E. K9 X% @+ x" @  h* s+ Wto do-business 2 I7 S+ u( F( x( t, K
" J: m- S3 w  c7 d
9 i7 C* ]% ?: \3 `) m/ y$ `
rt random 360
& }3 O7 Z  R. o4 Z) _& ?

2 z/ F% Q" g* zfd 1
1 M' J! C2 o( j

, V0 `; A( g: ?2 F( difelse(other turtles-here != nobody)[

3 t# N. D* E1 h6 p( P( V" D% S) N& F, j9 V
set customer one-of other turtles-here

0 n+ j8 S' r3 T3 ?
. ^) V8 ^  `0 z% M;; set [customer] of customer myself

  l; w% `( w. W0 Q' H# l1 O5 g% g# G* a' s+ ]/ K! M1 H9 \
set [trade-record-one] of self item (([who] of customer) - 1)5 W4 @. N6 `- L
[trade-record-all]of self: n( i) W" J0 u5 g( m" {
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  u6 e5 K% H6 Q6 n9 `" `8 C9 F
# @# n! m( X, Uset [trade-record-one] of customer item (([who] of self) - 1)
& q  p- W6 g0 \; k2 u% G6 W' L6 H[trade-record-all]of customer
, l% I1 |( R. w# y- z

' O) h' s4 J5 G, z7 z7 ^set [trade-record-one-len] of self length [trade-record-one] of self

' [* I8 x8 T! [) o5 m$ _; E" o
1 C( c4 F( t6 E1 c1 E  w! \set trade-record-current( list (timer) (random money-upper-limit))
) w! p; P. [/ n0 m

, h: O0 c! K% rask self [do-trust]6 S' c; @: s# Z7 Z6 M  _% J. M
;;
先求ij的信任度
1 l! y6 G  I! S. G) q* b( ^
5 q6 L/ j; ~) A! cif ([trust-ok] of self)
( v0 c5 `3 T5 N3 y, g! t;;
根据ij的信任度来决定是否与j进行交易[
; H. U/ ]( {0 Q. K( y$ Qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# e9 N+ Y, p+ T6 M- f

8 E+ r' D! i  L/ G% i7 ~7 N[

" e/ ?/ G2 Y3 J: z) O: S& E4 r$ o  u' G' P
do-trade

2 p% s9 n" J) m* @) [' h! G7 q
: k# Y  T8 f& |update-credibility-ijl

8 B5 ]4 c) Z! }8 A, m
" Q; T$ \% h8 }" L. \9 |1 l" Zupdate-credibility-list9 O; W7 g7 v- z# d/ K
4 U' Y( U! `) h* M0 F$ i
; Z2 S1 v2 N8 S; p( U, `
update-global-reputation-list

, Q: I( s4 j! {+ Z, f4 Z
) `6 I% a( y3 x# }poll-class
1 x2 ?( Z$ N3 J5 y# G

7 {! v. O0 y, O; q( b4 t9 Yget-color
2 c# O6 u- {! A. i
8 h4 m4 A& ^1 `6 f! y
]]3 K) `5 P# S% ]5 ]3 }
4 Y, V" V( @$ J6 i2 M& H
;;
如果所得的信任度满足条件,则进行交易: G' u' V+ X5 ^! T$ T4 d5 H4 j. I
  l& V, ]* r) @
[

7 K5 `' E" ^6 m, e0 B4 ^9 f! J: c7 k
rt random 360
6 H2 {2 E  `! o# T8 `3 a5 |
! o8 e. @* @9 B% m
fd 1
( @4 X( _  I5 i0 ]8 b# P' [3 A: w
% Q+ x& ~8 J1 S/ H+ ?# E7 e
]
6 X7 s% h6 ]' r/ a6 X5 ^
$ z2 D. D! G; B" H
end

, B1 K$ N% t% X* F+ K, W3 x
$ R4 f# H/ U. V- h. cto do-trust
9 ]! v, F& W! D* y, l' yset trust-ok False3 i. P1 i3 O+ ^# I5 C3 ^
! O+ k) K/ R* ]' ?) o

% f" d- d! V2 Llet max-trade-times 0
& y7 H/ ]. p% ^+ T! m1 I4 aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) I! X8 \" U& A! t* S
let max-trade-money 0
+ t2 m5 M! Z. ~. l( d  x! S6 k+ ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: o( m) R2 ~5 S6 u$ t/ U
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& w7 |. J: Y9 q9 c
5 j0 c+ L$ b' W: s
# B# l* h' h7 J: W1 ?7 A9 z+ z
get-global-proportion) y: X: G$ [) ]% ^6 j4 v
let trust-value
* h- \' J" e0 a/ c' y1 X3 o# w2 [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)
2 M+ N6 h  D0 a9 M) a
if(trust-value > trade-trust-value)
# X- ~4 a& u$ _* T; d4 Z[set trust-ok true]
4 V+ ~( ?& E( t$ M" uend
+ X. H6 `# F, K; H) F
  n8 V5 S2 h3 ~. w9 \/ v; n4 `to get-global-proportion! K# |( f5 t  N8 H' [) u% L5 X. X
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( n1 C& Q5 Z" g  O7 _
[set global-proportion 0]0 g6 G' D" B; o9 o0 \
[let i 0' @# k& ^/ L5 P, y5 @: K8 H
let sum-money 0
# Y) s# M& D( zwhile[ i < people]( a9 s5 Q. K# Y7 d
[: Q/ U  i0 o# |4 {  x2 |* l
if( length (item i/ o, F; F: t5 F! a' H. H6 B
[trade-record-all] of customer) > 3 )

- t; g8 I* _) u: [! c1 I[
7 |+ p: w" `2 g7 ~. Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))! j2 n5 ]/ }; q" N% n* T* B
]
, {, j9 D+ V9 C( P% ^]
" N* z5 Q/ q- p1 H' J1 Plet j 0
3 j8 d% S- Y9 Jlet note 0$ b" c3 _' S5 Y
while[ j < people]
, C( Q- s" j& ]) S8 o+ L. X; w[$ f, P* V: v; j  t( T) Y
if( length (item i8 {9 h: U- s0 _' S$ P
[trade-record-all] of customer) > 3 )
5 b% |1 `' y. M
[
9 i# E8 _- N! o9 fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ l1 Y4 }# |/ p3 l" W% ~5 x! k! }6 k[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 v# b: J- K2 O( l3 e[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 D1 |: E4 y, X& A. M7 E]
7 P2 H/ q( t  l8 B6 J]
# h& {, |0 y; kset global-proportion note5 F& V7 |- l) F; ]8 a
]! L2 h# ~& q* W$ d
end
4 l$ v) f$ o, R) f* J$ J
2 z6 N! |& u7 }to do-trade- L) y8 E0 a6 x8 `  U0 u
;;
这个过程实际上是给双方作出评价的过程
+ D! o2 x, v; u: M5 ^7 q$ |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" ?9 E3 r7 e# k5 Q; _: Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  K3 S) `& F3 k" b. q" g/ J9 _
set trade-record-current lput(timer) trade-record-current; u) q) k  K/ h
;;
评价时间
% k8 n+ V( Y; Q  {1 Dask myself [
! d2 o. R$ |9 t7 t$ `6 ]update-local-reputation
8 ^8 V9 i- {( Y  \, Rset trade-record-current lput([local-reputation] of myself) trade-record-current
: E- I8 T: y0 n6 R4 p7 y: i" h0 G]
* ]8 E( w9 [$ Y; q7 P" q; I5 Qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 Y: R5 e# }/ r& v5 s0 T$ b;;
将此次交易的记录加入到trade-record-one5 G, z' C9 S& f* g* l2 v+ D
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 V4 Z: h/ b3 @! M/ hlet note (item 2 trade-record-current )& @# p8 ?+ @9 y3 l; i, G
set trade-record-current
/ t& e4 q2 ~0 f! G! }/ j1 Q! f(replace-item 2 trade-record-current (item 3 trade-record-current))

4 f1 g1 H$ d+ m. ]set trade-record-current
& w( b! P  y! x* @% a(replace-item 3 trade-record-current note)
) ]6 B8 X1 E% j* }, ^4 ?
2 h6 h& K, I% c# u4 t1 Z% P/ l4 J

# H& F$ [  Q, Hask customer [1 _, y* C: {# t+ i) K, J0 e0 h
update-local-reputation3 a. N$ Z: }/ e! v
set trade-record-current
. p+ m+ i0 M5 d(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 N2 U2 c1 p! q4 n1 T]7 V; O: _) K4 c7 [) S

1 ~- f, f3 p* z5 Y5 b' s8 `- G" @

+ }% I4 d# L$ w( K9 r, K: S1 t0 mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  M. y* ?3 z2 w) f9 R
4 V# U  T7 g. j$ W" K$ Q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 w4 }" s$ x% J5 X; h: E;;
将此次交易的记录加入到customertrade-record-all
6 {3 n8 q7 u. B2 }& l! K3 o: b9 Iend
+ K2 x4 l2 Q/ T0 S' C9 g' g5 X/ T1 z( e" b
to update-local-reputation2 M& k  }9 k7 J) @* r
set [trade-record-one-len] of myself length [trade-record-one] of myself6 a- s2 V9 U/ R: {3 ~; d
# O3 j% j! Z# x) a' D5 o

7 c8 T! n  g; O( g3 W;;if [trade-record-one-len] of myself > 3

% b/ V, K) D4 z* L4 [- Nupdate-neighbor-total  c/ }6 Z5 k2 e+ \% \
;;
更新邻居节点的数目,在此进行( x) T" X* A4 y0 d7 [$ i& q
let i 3; ^' O0 Q1 E  g2 R
let sum-time 0& B/ k8 |% d7 x: S0 _* i
while[i < [trade-record-one-len] of myself]
" R) Q) I( Q& C# }; h$ u[6 ?6 x% c9 |1 ^  m
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 J8 u! |4 P0 ]7 N' C) k! nset i
: V; n6 d$ b1 Y6 G# A. E( i + 1)
% z$ ^/ I$ i: g7 h! S% T7 W/ G( ~2 y
]. C0 y2 o) S9 d# N0 O) A
let j 36 z+ C+ T0 B( `2 C/ L
let sum-money 0
1 H5 i3 U& Z" P6 q, B( F, ]. Qwhile[j < [trade-record-one-len] of myself]% `2 S: E/ l" R. q  g/ V- C
[* f! \9 e' w! ^
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)
& t+ i8 F& W- b( [8 K3 Aset j
" l4 i6 l5 U! x0 h/ o( j + 1)
) O2 {1 p; D7 D
]" s( H: |; u& S
let k 3
; s* ?: j  J" n/ r3 i5 Z4 A3 Hlet power 0, Z+ z" I" J7 P' ?! `
let local 0
7 s% }7 A5 Q1 uwhile [k <[trade-record-one-len] of myself]% r' X! Z+ k/ V$ z
[
; a' n0 t6 \% h# c& D' Nset 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)
5 A$ {8 f& B4 D$ p: F9 S; B) Rset k (k + 1)
( i* u  t) p: A: `8 l]) ^4 `7 S* h( Z; d1 |0 ~! y
set [local-reputation] of myself (local)4 `1 j* r4 f8 T9 V* _* }6 L( ]
end
) b6 w! h4 @# Z, Y0 ]) `# f" o! O
to update-neighbor-total6 W! S3 C, H) J+ O' c% b- b
  c+ \& K" c- v) O, N* H
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* @0 l9 w% w5 ~& L, t

8 K1 w7 ?9 [: \5 k3 F
- H6 u9 z4 K) E$ k' y. J& B' C0 w
end
* F* e; Y. J" f
8 ?8 W, ]7 q6 zto update-credibility-ijl
) x# }' q7 G, B1 B! Z% m: p3 X
0 c  e$ n( J! r! A9 ^9 d;;
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。
6 h+ L" c% Q7 ^- Wlet l 0, s# v+ O, D. V6 H9 P
while[ l < people ]- R' Z0 e. L2 I
;;
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
5 S  _( I7 R3 P, Q3 }2 s) i: x[
+ i, N# k* R7 ~$ Y4 @6 k* plet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 o7 o. \  h  \5 f5 b2 Uif (trade-record-one-j-l-len > 3)
) h" X  x/ ~2 t( G% X8 b[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* W, L+ K* g' V% J; t, u
let i 31 q' d+ b# q# a
let sum-time 0
4 n% k' i! A6 J; H+ kwhile[i < trade-record-one-len]2 w2 \! I* w' u, e# }6 [6 @& R
[0 d9 O$ Q! I, L/ T
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 `9 M5 I+ r0 T) Y
set i
# A2 }% e7 ~) |" B( i + 1)

' r& U# \' S% B3 X0 u$ @' ]9 N7 V- f]1 M( A& O. X  U7 C8 B7 x- B* [
let credibility-i-j-l 0
% r6 @, s' b8 _;;i
评价(jjl的评价)
# C% X5 q- x7 @* g$ I2 w" m4 Ilet j 38 ~4 X: }% E3 S: h1 Q" M
let k 4
3 p, V) Y/ R7 D" Q% Q, o4 r& C' Z# owhile[j < trade-record-one-len]
* s, V3 t* [. d1 e7 L1 q" i4 W[
1 ]9 v& T! M' t1 d/ Vwhile [((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
5 U0 c: W9 w7 j1 z) b7 Q+ `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)! O% x1 L6 ], E* E/ {5 @( c1 v
set j
$ P& j( z( ?2 V( u# M  \( j + 1)

0 w. D3 {9 q5 I  r6 X! u9 ]# H]
$ j5 J6 @1 D. Y- Z7 u# F- m$ ?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 ))& w+ w# g- D' q

6 X2 J% T3 y0 T- D7 ]4 f4 c6 h

# Z4 l+ p9 d: C# Ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), E! e" c, |% U8 P- \- N2 K7 ]2 C
;;
及时更新il的评价质量的评价
1 G! ?  N- ^/ A: W. xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  G" U& ~% D2 T2 D7 ~
set l (l + 1)
) W) L+ H5 }1 g! R" |' _]
' x9 U5 Q% H* Dend
* a* D+ p% B( O8 {2 i7 `
! y3 y2 G9 y6 f  c" d2 e. l: _to update-credibility-list6 y4 V. d6 O9 @! L) `: @  h
let i 0+ l, C5 @: [( {$ `$ N
while[i < people]" z. G% o  ]0 e$ `5 u# t
[1 P# y" b1 \( F% Z" A+ q
let j 0
( P1 F! H& U* J& }/ u9 ~$ Plet note 02 y4 y; L& {4 ?# X$ ~) A  F2 }) A. K
let k 0
; t( q+ c4 m$ T1 s5 F1 C;;
计作出过评价的邻居节点的数目  U, Y$ a1 u+ P& Q2 _& m
while[j < people]4 l* |- [, b$ O4 E1 p
[* m( a% }$ U  j. G8 r* f
if (item j( [credibility] of turtle (i + 1)) != -1)* k  z8 ~. R; \& j7 u1 d  U* K
;;
判断是否给本turtle的评价质量做出过评价的节点  o1 E( S9 S2 _$ R+ ~  l
[set note (note + item j ([credibility]of turtle (i + 1)))
. ~8 H8 d, \2 n$ s;;*(exp (-(people - 2)))/(people - 2))]

% h' Y& h5 ?: h1 yset k (k + 1)6 A3 ]8 H2 t! a! Q' f8 e, J
]- y6 C% n7 V3 D( Z
set j (j + 1)0 D6 O" g# i& ?, W
]
  h. {: c" c  k: I4 B, W, ^. Gset note (note *(exp (- (1 / k)))/ k)
7 e4 m  `: d; A1 f( G9 d- y8 lset credibility-list (replace-item i credibility-list note)- @3 U/ Q5 B% y% F9 @& E
set i (i + 1)
, w. T3 \1 d. m3 A! F+ A]
3 v) {) N9 }5 }! c& oend; {4 h. ^8 m/ _

, G; a/ B6 ~5 ^8 mto update-global-reputation-list2 Q8 ~6 A2 P; W
let j 0" k; ~6 q" g  _
while[j < people]5 p. P, D) C* S+ p# Y& M6 M3 P
[! ^( x* E. n% ~" y2 Z  `) Y
let new 0
/ ^/ Q$ Z* z$ `;;
暂存新的一个全局声誉; E5 S2 ~  N; R' K5 x/ K1 n
let i 0
$ @3 w; p7 x  B8 e% I0 `$ V- L+ h6 xlet sum-money 0
5 j# ~, Z" [. i: W7 L: plet credibility-money 07 V* G% v2 X* L6 S. K6 y
while [i < people]0 w0 w  i  c- Z2 K, Q$ `
[
1 S/ |6 {; P3 W; p( O7 xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* q: p( h6 \( k8 M/ \9 w6 H- Aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). W1 P- L; b$ d- ]9 i4 ~! `
set i (i + 1)
( T. i3 C/ |) i8 F  P]9 i! v* c0 R# H, a
let k 0& R2 u6 d' h& [
let new1 0
# |% Y" Y5 Q! x+ x* pwhile [k < people]% \2 C# B6 [6 e% D4 k  ], t$ E
[
! T( [) H6 ?6 t4 r6 Cset 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)
: ~' v; n9 H0 I$ P: G) J3 s' {set k (k + 1)
* V) {, j$ @9 K; J; F. n]
4 x+ A4 B8 J  r" G8 o& z. Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % C9 ~$ p" Y2 ?
set global-reputation-list (replace-item j global-reputation-list new)2 E# @& ~& F# R9 N" p; R
set j (j + 1)
% t2 `5 v) n' @- [1 w: Y]
0 z% `( C4 e9 f  N$ zend
# {( X6 ?- z4 c  h6 U
; E+ F* S/ u7 U+ l2 A5 y
' T, Q, d6 f# _0 k% L0 X) K1 K  r2 K* E3 l; |8 T' l
to get-color% |: E$ n: O. @5 F
3 V2 ~# ~, P* J
set color blue

. A& u& `/ M) Y1 o7 D% Xend
0 N# }9 T, ?# h1 h
! f( {9 i2 r1 y% m* K' E- yto poll-class
) {/ v+ M! C% T5 t3 `end! b% V# L; V3 y/ B* o9 o

; }3 u# I2 X' cto setup-plot1
7 z# n7 P$ o* i' M2 I# n' H
9 ~3 c" A6 R% T+ I/ f2 J9 |set-current-plot "Trends-of-Local-reputation"

7 y1 F% u& p% I, f) f2 s: }1 C
) r! v. Q6 P8 M" N+ uset-plot-x-range 0 xmax

9 }4 S7 i! ~5 l% U  B' n! A
0 J+ c, N9 X7 R, \set-plot-y-range 0.0 ymax

5 f7 G* w1 l  n: `end1 E' e8 e& F# d& R
& w' S3 E3 e- P8 f
to setup-plot20 g& G0 U6 K/ f. F1 K4 S. |
- X7 O7 ?- H" E" Z5 Z
set-current-plot "Trends-of-global-reputation"

' i0 r, V" V( R1 [, v! T5 U2 ]2 D: x; y0 J: G9 e/ l, v
set-plot-x-range 0 xmax

7 j6 L" B: E, b* g) U( i* q4 R+ ]/ @/ ^
set-plot-y-range 0.0 ymax
: n* s" o6 v; _; g  _( R
end; g6 a' H2 z! K7 R4 y
! L4 E$ M9 X( W0 f
to setup-plot3, Z" ?. p+ Q  i; W6 N+ M7 f( w

0 }$ F1 y: T4 G0 bset-current-plot "Trends-of-credibility"
6 Q$ Q1 R  b: S0 `
* j5 \/ S- W3 h6 Z$ _9 g  C
set-plot-x-range 0 xmax
8 l0 ~" H$ e; [* f' s$ V0 i& l

1 R. f; X9 W9 ~+ Vset-plot-y-range 0.0 ymax
9 d8 t8 r0 u* Y5 k& D/ g. z
end. s8 X- O5 A7 T+ f0 a
$ h' T+ {: Z4 w, }8 x- M2 h
to do-plots( y; T* a& ?6 x. r( p; X( S
set-current-plot "Trends-of-Local-reputation") R" G5 h7 U: l+ [
set-current-plot-pen "Honest service"2 T$ I' I! x* A' X
end
1 u6 Y2 o0 X5 p/ l
- k! l  W& {( A: [( K) a& M[ 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.7 ^2 i) {6 H4 h5 m8 y" W1 h, ~

6 j! C  k' s! o4 L+ h1 L0 Q  u, k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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