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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:" ]# T$ _( C9 k
to do-business 0 v- M2 E- r1 |# k/ e# g- H
rt random 360
9 _6 h$ m5 g# Z( m0 \  @; N- K fd 1" m' C' _$ L: A
ifelse(other turtles-here != nobody)[
  @5 g7 L- u: S; ]; f4 t& B+ s) i   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.
& B$ s0 L9 p2 u4 A   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! q/ V2 _! C/ a0 _
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. Z) a7 w% \% L3 U6 H/ X* h, B8 i* Q
   set [trade-record-one-len] of self length [trade-record-one] of self+ c0 E: b& x  m/ _
   set trade-record-current( list (timer) (random money-upper-limit))! w7 J$ O: H6 J2 x
/ N1 j7 ~1 O  A. H
问题的提示如下:' v! l9 x+ F; ^) Y* W9 ~& R5 t
* H2 n& V- [, H" e4 g
error while turtle 50 running OF in procedure DO-BUSINESS3 v: h; u0 u( A
  called by procedure GO
; d3 [/ Y: N+ [! b( FOF expected input to be a turtle agentset or turtle but got NOBODY instead.$ O' X% A% m* o8 R2 f7 T
(halted running of go)5 y9 S" T! j9 Z2 c) f' ?

: i# Y& ?6 {5 I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~~
( i, Q3 r( Y$ p  V7 f+ r' ~3 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
8 s, Z# Q- B  D+ i+ Z3 f3 i; mglobals[1 K3 p2 j, Y* E) Y( Y. j$ O" h
xmax+ z: B; @0 H' h
ymax
, y0 W. ~- A4 W8 e8 U& U& l+ Aglobal-reputation-list" W$ x# d' N, h" a8 o

7 `4 n! E! w7 _# _- g/ Z;;
每一个turtle的全局声誉都存在此LIST
) o$ m* q- |+ |' F( E& Acredibility-list
& e9 d  N1 M3 d. I! U4 f3 B2 J3 l- y7 i;;
每一个turtle的评价可信度
+ ^* c6 l  a) Chonest-service
- g5 j, [4 M& L: Q6 `" f5 Nunhonest-service
) `9 |( u8 W; r& noscillation
# |. X; t  ^; K: p1 @rand-dynamic. Q1 F, U+ {- o8 v- g, C
]
0 G) ^. V8 B- V1 {% Q" ?: r! N) W2 L; ^, d. _4 u# D; i4 _) n
turtles-own[
2 g% b8 ^: F9 C+ e- ptrade-record-all  r! M( R3 ?, U4 P+ S- H
;;a list of lists,
trade-record-one组成) \7 S( E6 o# x2 M/ q
trade-record-one
3 J* e6 `9 n0 [7 W4 K;;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 D) J' V& Z) p) K

! S5 M9 N- a6 [$ m1 I* O% L9 I;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
* ~; B5 z7 c4 Mtrade-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]
' N$ K/ m' {6 A) ycredibility-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list9 e8 z4 V6 I: i$ m8 l( D  K
neighbor-total# G7 E- y( G: ^3 M
;;
记录该turtle的邻居节点的数目$ z9 C) Y" T( N5 z
trade-time
4 V9 }4 o1 `  z6 y;;
当前发生交易的turtle的交易时间8 m) |. o4 K; P" ]
appraise-give  U& f! x. n* Z  t% c
;;
当前发生交易时给出的评价5 w5 }9 s9 U2 {8 b
appraise-receive, I/ T. @+ r9 l' ~0 {; o
;;
当前发生交易时收到的评价9 A3 y7 |$ X3 b
appraise-time
8 _9 K$ u* o# O8 P# {;;
当前发生交易时的评价时间7 o" r. x" Z7 H5 H6 a+ D+ N3 c
local-reputation-now;;此次交易后相对于对方turtle的局部声誉  c2 |" E( r$ v3 d
trade-times-total3 I; g/ ^: s" u$ ^% I6 V; B
;;
与当前turtle的交易总次数
) L$ x% I7 _/ g* U7 j4 w% ^; [trade-money-total! J) w& }' A( C  C" _( H; J5 x
;;
与当前turtle的交易总金额
9 r9 e" p7 _6 `% Y/ S+ @) K- olocal-reputation) E- l( [+ m& K, e% {
global-reputation
, g0 ^7 {2 O  b! K6 e  `credibility. B3 T' V3 X5 e. F$ Q% g
;;
评价可信度,每次交易后都需要更新
$ c4 ^2 ]% u2 D6 [& G6 Ncredibility-all
! E+ m: i' c* P5 d: 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
3 z2 k) s$ X* E
% b6 s# _" p# O2 h. v;;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
1 N0 B* ]0 Y& n9 U, pcredibility-one
8 M0 {' R& h1 }- R% f9 \;;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 f# U4 N; B" i3 `4 b% Sglobal-proportion, e; d& I% g) E9 ^! V3 E3 g! Y
customer" T: j8 w% G: n: y/ U* m) E
customer-no
. t. f+ A7 ?5 Y; ?' h- Q& w, \& ]trust-ok+ E8 Q) t& `* i. [/ o5 O% ]
trade-record-one-len;;trade-record-one的长度* Y8 y5 a7 q9 Y/ p; R4 Q
]* j0 P/ D1 ]" t- l" U% @7 s# y4 R/ A

# f6 H5 |: w/ f" I' P+ T. x6 j;;setup procedure3 t) R& ?6 I# U4 Z% O5 z( C

" h5 k1 Q# P$ }+ [to setup* L  H# z' k0 z* p9 W1 M

. \% _6 Y5 _2 [2 U4 u; Qca

9 B6 j, B7 Y9 Y6 v/ S* e3 Z0 k/ `$ F7 F+ `2 F+ ]/ p) O3 e
initialize-settings

& P! Q8 w5 T( R& [& ~7 t) i) t. V  [  I# A! K
crt people [setup-turtles]
3 b5 n4 F$ ~4 Y/ `0 ?

8 ^2 T# F& ^; }0 l: Jreset-timer

. X+ d( Z( b# @# |* v
2 }0 r6 e% ]* m9 I# Mpoll-class

+ i: A. L! @- q( ^: Q2 m5 P3 y, \/ l+ H8 }7 ^
setup-plots
( w  p- n9 E8 w$ I! y0 o

& m; |4 N3 v1 {$ d3 _) xdo-plots
$ ^2 x5 x7 W& G0 c. f5 j% c
end/ Z5 V# {4 L: |. K( |

1 {0 {6 b4 g4 p3 j5 ]2 w. [to initialize-settings
$ a4 r% @' x  K* y" i# J- x: u" b2 {9 N1 X; {% V: W2 f
set global-reputation-list []
/ }) P  a) f" a4 G+ t( b9 E

; w: J$ H+ x" r+ w2 I& Dset credibility-list n-values people [0.5]
: j) C8 X7 Y/ |! {
  ?9 M4 x6 N5 x- _
set honest-service 0

; t+ s. P" B* G7 i) n9 p$ P8 U: ~  d
set unhonest-service 0
5 O  W9 M: s  [% h7 r

4 S3 n7 k3 W* u$ hset oscillation 0
/ g9 B# ^# b) A# u* m7 A

) p% U1 i: Z; n1 [2 N1 V& xset rand-dynamic 0
0 h# K  I  z, b0 t9 o: V3 J' o3 K
end
' b4 x3 l+ z. o/ Y
! q/ l( u: m5 B4 I3 {. oto setup-turtles
9 l1 N! w' ^7 sset shape "person"! Z; H9 Q( c7 d5 u
setxy random-xcor random-ycor  p' b0 e6 M  |) Z# P* Y" s- I8 O
set trade-record-one []* z: N( Q$ y  W& [
, g- E/ a' ]8 Z4 s
set trade-record-all n-values people [(list (? + 1) 0 0)] $ h+ y+ W: r- ~0 `: ]

) r5 {: S% I/ w8 P8 ~- Sset trade-record-current []
6 a: E0 Q# w; b  U3 g. L7 b" ~& h% Xset credibility-receive []& n' L$ x6 Z# k8 }0 ~$ r/ Q
set local-reputation 0.5
% [0 c6 _0 }- i* n2 {# f1 I6 vset neighbor-total 06 h. D* h, _5 G% Q7 I
set trade-times-total 0' l3 a0 s: D  A
set trade-money-total 0
8 ]' d- h, ?5 ~set customer nobody- r" e8 F# m& G5 x
set credibility-all n-values people [creat-credibility]
  w6 R4 A3 z% L) L, X1 ?" Qset credibility n-values people [-1]
. ]" S0 ?+ g9 hget-color& ?2 I5 B) j; F
( a, c# {$ P7 J
end" \5 ]# h( x8 U& O- {: q$ ]
- h( j: G8 d/ j/ ], Z7 W
to-report creat-credibility; |2 O" e& D9 w4 a
report n-values people [0.5]
' H5 c1 ~- T7 V+ r! _end
/ }5 ~# R) ~7 U# c& I( |& c1 y" M0 S5 T$ Q
to setup-plots
  _( L# E/ C! s" s1 H+ k
; _) j0 c$ N" s1 iset xmax 30

, L9 s3 \4 `, n
6 q2 E+ E1 A6 J4 T' E  T% a1 Iset ymax 1.0

% d1 k3 n3 Y; s  \- P* `: D5 ]9 i( P0 @1 h+ {* y
clear-all-plots
  I5 t8 S  m9 {: S8 n
5 j* q- Z$ K+ e2 o  V. W# e) z
setup-plot1
" w- S- m6 g8 y9 h
( ~) l8 U7 |1 ]2 s# |) d
setup-plot2

- ?: _% |6 L6 l8 o$ K( E4 Z" H
! a/ j5 Q* l8 B$ |4 ?$ E; Asetup-plot3

5 s0 l" R  G" V; xend- \) w9 m/ J- ?1 P+ G0 S
3 x3 E' d( n: F/ ]! r" Q2 c
;;run time procedures9 A7 H/ \2 a+ l, P8 L
7 ?1 v3 c# [5 Z
to go
7 ^  b; \; I9 Q8 N$ k& W* r+ E0 w4 t+ {0 ~
ask turtles [do-business]

, }# _0 c. F. I2 Zend1 K; a/ |% F2 _. L5 r. o
4 }% S6 ^6 Z9 w' K; J: {
to do-business
& R* @. I, {7 v1 C  [0 A

1 O$ e5 B2 F; ^# t
; k# H# U4 S! }4 Drt random 360

* w  N: q) ?, y' c3 t& O
- n4 Z& X' S7 q- Lfd 1

- z( \) ]! W0 ]$ e# t( D: @$ b9 d' P3 V* y
ifelse(other turtles-here != nobody)[
5 B. q: C( _# w  R4 a+ z3 c5 o

8 J; {% s# R8 L% jset customer one-of other turtles-here

  I. |+ m" Y5 B2 a% S. d1 w$ i7 Y
, [9 n$ P2 s5 b" D5 R# G+ H. V0 ^;; set [customer] of customer myself

- F1 l5 J8 s" b( |5 l8 B; x* z; d# Q0 ?$ _" r0 k: r3 i
set [trade-record-one] of self item (([who] of customer) - 1)
" h7 V6 y7 n) L  q[trade-record-all]of self
. D/ L; {; S% k9 J0 K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 I' I5 c) K; R# b
4 r6 Y, G! l" T5 |8 C
set [trade-record-one] of customer item (([who] of self) - 1)9 Q: z" z, E) Z& {' f- v
[trade-record-all]of customer
3 V! v8 r, ?2 F& Z0 e+ `

9 _& K- V* t! h3 s& B6 _9 Rset [trade-record-one-len] of self length [trade-record-one] of self

0 h& m, S* J9 V, V+ J4 j5 {1 O7 X% d7 [
set trade-record-current( list (timer) (random money-upper-limit))

" @4 F) B$ ?8 D/ n1 R- e& P
! ^8 w/ P7 F* K( Hask self [do-trust]
8 b2 o/ i3 v( |) S, r;;
先求ij的信任度
7 J; H9 E- `8 K/ x2 y" y
4 O  ]- H( M2 \if ([trust-ok] of self)
) J0 M( E- W, _' |" ?;;
根据ij的信任度来决定是否与j进行交易[3 C9 v$ C4 ]1 `# K8 w3 C" P% ~% N
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- v5 h2 f, N: v  @2 |5 O. [( A+ _+ K( G
, k6 B' }" B; p  Q- |! t( `- O
[

0 Y, f! y9 r: v6 a. u$ J% b
3 R6 \( A! ?( z: v5 Ndo-trade
: z$ e- h- `8 W, J) S; N# }8 T

  t& d( W& y7 H* O$ |update-credibility-ijl
: W& k/ l8 m! P5 N1 `5 R6 V

  d- P& M' G- k' k. t( r: @$ nupdate-credibility-list
$ ?3 ^  z3 E! o+ P4 F% Z/ ?) q

% f9 I' f3 H4 q8 c1 L6 g( }+ m8 S& N3 E+ g7 P; {+ b2 Q" a* ]
update-global-reputation-list
4 ?5 k, c$ X6 d7 m

2 l" t8 V. T- F) p' Bpoll-class
6 n# ^+ y; g" s# B& D
) J- Y0 J1 D; {. b
get-color

+ s4 X) [3 q. S0 o# y
# ]; `# p! Q$ M+ w, \6 c]]$ U) T6 Z% K) o1 l5 x

% s, H* m( v1 H+ _! B;;
如果所得的信任度满足条件,则进行交易5 B! Z# X1 ]  g

# H0 Z6 Z9 I% K- _7 X' k[
9 e3 X+ c/ x3 R3 o# _
4 W/ d. H% E% F5 N/ o6 |1 i, t
rt random 360
- ^  C, T4 ]+ H( a( Q" P
: z( \6 `& ?! W6 i8 U4 y
fd 1

/ o! Q% Y2 t0 g  ~. H9 c# m% n" N5 W5 f& K# A
]
: @' Z  A/ C% R5 V' l% d
9 N! N3 z9 M$ N  y0 }9 H- a2 F% u
end
" Y: o* p& u" _3 f$ U3 N, C/ O
: J" P5 ?1 z$ A: O2 @# g: f
to do-trust
) Z9 ~# c+ c! S8 S) q4 s2 qset trust-ok False
9 n& Q* C6 d: a4 i3 a) `) D* W
8 e, d3 j2 N9 _5 `. I/ D, e
9 t/ p6 p! C  @
let max-trade-times 0  p9 `, m" ^2 E$ B# k: z* k
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]+ g9 t: w% i/ j+ Z. @% S; \
let max-trade-money 0
# m1 h8 \$ `( U& I$ [" Kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& I# E! z  u/ d4 Q1 C- j1 W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; M# d( ?' D! {; v9 o5 h9 o7 _: y* Q# j7 g6 [
0 o+ x$ v" p$ g
get-global-proportion4 y, O: ]$ g) s# `- R$ V$ t/ q, O8 ]
let trust-value
' N# e! w% A, d* Q4 ^local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( Z) @1 o, A6 X3 Y8 b4 X" _
if(trust-value > trade-trust-value)
8 B, Y6 K7 [- g3 F) U[set trust-ok true]
8 k. J9 q/ e3 E8 Lend
3 `) z. O8 v4 z  r! S& }; k) F! ~7 a) l* ^
to get-global-proportion
6 N+ I- t% o5 m1 h4 qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ q& }8 A" M4 ]% W& c8 B: f0 Y/ L[set global-proportion 0]1 g1 B6 e0 _# ?5 s  y
[let i 0
5 k1 H) N2 u- D6 ^; Y% i6 `1 blet sum-money 0
. ?- ~  ]" C' {8 hwhile[ i < people]
, g- b# e! _- S- I& M1 B[
9 p" L8 M% U( O. vif( length (item i1 ?6 r5 c1 l$ [* t+ q; o( y
[trade-record-all] of customer) > 3 )

4 O- |" u+ b& T% |5 ~0 f[
' V8 b" R- s, mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))! y% c! d' r, j& K$ i4 g
]
' c, f& F; ]$ l/ Y' ]' @]
+ k4 w1 t8 T$ u* g, S. s, Klet j 0
8 f" [/ {" @3 ?; ~6 ^let note 0' e, K4 G! f/ Y5 L2 G# C% `2 X
while[ j < people]
/ _( s; R* B& t+ j6 {1 F[
" |9 }7 `) c& u3 V" c8 K# }; ~if( length (item i
9 i3 x/ i6 {+ V  }5 K[trade-record-all] of customer) > 3 )
( ]5 c4 N  O  j
[
/ s0 H/ B2 E5 e% Iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( n% `0 u6 G# m4 s4 \8 y$ |[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( ?4 C& b! C; A8 c5 ]; m[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# G2 ~  e  \$ H3 ]]5 N! i- d0 w$ O% p/ u- }
]
, ?/ _" |  |  h! u- Y5 T" P' M/ T% Bset global-proportion note. U2 i# D# S, N) Q, g  }2 S8 [. L& \9 ~
]% h* I# p  f" S& k
end
& ]! `3 z0 p+ U% h% f/ Y- }- k0 p. J1 F2 c7 H+ f
to do-trade
' F6 w6 v4 t8 X9 u& f;;
这个过程实际上是给双方作出评价的过程/ Z* q% q5 e! O$ e8 ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* U+ j; l+ c+ K- Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 ?, ~& r  m# K/ s$ D) Z
set trade-record-current lput(timer) trade-record-current- ]. F& w$ F1 T
;;
评价时间
' p/ A# j) C4 U. \5 R9 [ask myself [
5 {. [9 p+ q* _3 G  C: E" J" ?update-local-reputation0 u# |; ]7 @, |& B
set trade-record-current lput([local-reputation] of myself) trade-record-current
* }1 e% |% w- i& g% a2 i# M/ q]
& x8 s3 {  _2 Y  R. i* }set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 L7 d. T8 g) ?# o6 d& Z6 S;;
将此次交易的记录加入到trade-record-one
. `: }, K! d+ J$ Yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 M7 X8 E/ N5 `0 l0 C7 rlet note (item 2 trade-record-current )
/ w, a) r6 X3 m. @/ y! Fset trade-record-current
. T5 x9 Z1 V( w' Q  G9 U$ v( ?(replace-item 2 trade-record-current (item 3 trade-record-current))

0 R* U0 N; Y$ E5 P! t  f$ tset trade-record-current7 p" u6 @( J% H; V) C5 K
(replace-item 3 trade-record-current note)
; t! O( z; Z' ~+ u4 T
4 F: @* {1 }/ G# F; c1 X2 |
* w+ j" Y$ u  {5 Z( h+ k  k
ask customer [
4 ?  ]/ f8 Y) f8 x) Z$ Uupdate-local-reputation5 R& H+ j' h. r& Y5 O% X
set trade-record-current6 J8 w; _+ L' O9 s, {! H
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" Z' i% L# R7 d' [' S& Q+ c; y
]
. }) }0 k$ n3 \0 D
9 c8 \/ I- }) q2 K1 K+ n

4 {; @- }' l; i% ^/ B: y, vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! y# x# V4 G% m. J

$ e% _( p( q# f" d* g  S( a0 c) v( Xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 A4 @) J9 O: Z8 [6 ]3 F; V* u;;
将此次交易的记录加入到customertrade-record-all
) c# I  S" C" |* I  I! C6 m; N8 lend
' d: d* ~% i* V) E
7 K* [& {- x% I7 `: C# B' Kto update-local-reputation0 s  F$ J! I  W% I( j3 @7 @1 M
set [trade-record-one-len] of myself length [trade-record-one] of myself
, D) l% Q3 @; V; x6 i1 r4 R0 k
/ d. e: m6 ~2 L
; j+ Y( z! l# h# ~- o/ p;;if [trade-record-one-len] of myself > 3
+ u3 [+ W# [* i; C
update-neighbor-total
: H5 B5 d0 W, v4 R' I/ q;;
更新邻居节点的数目,在此进行
. c1 L. a9 I7 Q0 v2 E/ c7 _7 C/ Y- Jlet i 3% Y' _$ h% R& g4 R' X
let sum-time 01 Q- O7 i( ]4 u( T) V- e0 r4 |
while[i < [trade-record-one-len] of myself]
, S0 Y* }6 N1 r: L( b[
) H# j+ Z( z8 X* q5 D# Iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* J' i; `$ K) g8 r* C1 Wset i
8 B3 U3 d( M: l( i + 1)
0 l7 g5 y- _0 p  _
]/ c9 h4 d; M  u# a9 O
let j 3
# |5 ?6 [0 i0 Xlet sum-money 0
2 |2 E5 T4 |1 r6 o; i' mwhile[j < [trade-record-one-len] of myself]+ O/ F# q3 X" g8 }- _1 u; u
[( |3 I3 A* w& S3 ~8 v, E+ h. ^2 ^& A
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)% Y5 e' n4 i. u0 ]; E
set j+ A7 D9 x/ F; {' P8 @
( j + 1)

: f( s/ b% o( Y6 [) m  t]- h- ?. F9 {9 ?8 ^, V& v" G4 P
let k 39 Q/ Z$ l" D, q) K* R( n
let power 0
5 i, N/ @. h1 R7 y; D, X$ Tlet local 0
, i; h4 c0 z2 R2 `4 }while [k <[trade-record-one-len] of myself]& y9 `( l, X/ y$ x
[3 C. M! Q2 J# o  J' ^
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) % {$ W2 R: X* w! d9 l4 p
set k (k + 1)2 i& z4 {+ u- m* o* U
]: P& w: {& Q% L. |; F4 U7 Y
set [local-reputation] of myself (local)5 P' }% l- `! e0 l5 y, K
end2 i$ g! [& R! q, v0 a
" A8 E' T' u1 I* |- F; T2 s
to update-neighbor-total
# a5 ]. a* n, N0 j* J3 `8 v
9 b, q+ }/ _: d2 O( A2 x& uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 ], ]: e, Y+ x3 _) @6 }! p- C' C1 i
- ]/ I6 W6 N  o# V

- y! Q' K% u) n; I# V6 `. a( \, Eend0 g3 f8 k( e- s. f; T; F" B* o
. S+ ~, a* w/ Z# u2 J& e7 t& L
to update-credibility-ijl : r, I; x" F4 q) A* l$ E3 @

; W5 z$ _# L& W;;
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。
- K  _  m4 h8 p- d/ x! t- n' blet l 0
$ k) Q) a  Z* j( k% Hwhile[ l < people ]
" L+ ?! [( v, A4 A;;
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
3 K) d; L& R$ D- r/ I[+ C  ?/ o6 ~" x+ s* d/ \# q1 N
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 ^1 C) X0 Q9 r, _if (trade-record-one-j-l-len > 3)* p7 ?; O" |; J# G8 ^
[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( ~0 O  Y3 r2 c, V
let i 3
. p  g& ^2 m; `8 m" i& F; A) g2 vlet sum-time 0
/ k% \; U* c9 r3 _$ swhile[i < trade-record-one-len]) ^- |+ z# m& r/ i7 b0 s7 _
[1 [9 q6 Q7 Q8 _, d& q0 ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ `( j, R$ z. e
set i
% t. o$ l7 q6 Q9 t( L+ v/ H( i + 1)
9 u- _. o" r3 h1 A) K2 y
]" g$ r. \2 N* G
let credibility-i-j-l 07 d" h6 ?$ q( u
;;i
评价(jjl的评价); ?$ [/ l3 j% _( ^$ D8 G
let j 3
! Q4 {2 y: E6 H. k( M; v, ilet k 4
7 a: l" H+ ~5 S6 Gwhile[j < trade-record-one-len]
' I# h5 `# V0 M[
, u3 X. X! E6 D7 n6 P& Kwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
9 K" A4 A; \% m& t/ a- h2 j2 jset 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)' B- I3 }9 d& u! y3 b9 H; `
set j
$ _+ i" r  ~+ p  o: W- e5 C( j + 1)

. Q, O, w. h9 G8 @4 Z8 ?' I]: ]8 [1 v. y6 [) r2 _7 `
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 ))% n4 |8 ?" I; `% L
* @* T2 R" `8 b0 V- H

+ k+ n5 t" Q) r6 Wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ u- ?: k/ R* h+ ^, r;;
及时更新il的评价质量的评价
# s; _- ~$ G' m" ~% p4 h( [set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 N5 |8 m  \1 ?& L" P- p3 g8 p: X$ ?
set l (l + 1)3 M$ T9 z8 A1 Z$ D  V
]
  |6 H7 [+ x0 L  C5 e9 q/ u& [end1 ]' t- }2 S$ J

$ T: G. j/ a( s+ H; x& lto update-credibility-list- g$ _" O9 h7 p) Q* c  _* G) \
let i 0
" n3 t; V" ]3 [4 Vwhile[i < people]
1 ~; m( C( V# b[
0 K( q& ], w) H, P* k3 S2 Ilet j 0+ \1 V1 f  h2 _1 {. z# G% U9 C1 Y
let note 0* e( F- O, J; M6 ~# e' I  o
let k 0" r2 n& ^1 k+ H( Z1 S
;;
计作出过评价的邻居节点的数目
8 C8 ?! I: K7 S& ]8 K1 D& N8 V0 q& Fwhile[j < people]$ G! {' k% a3 k1 w+ q% l
[, M/ J7 B+ |; J2 `  Y
if (item j( [credibility] of turtle (i + 1)) != -1)9 b% i/ A$ {7 {
;;
判断是否给本turtle的评价质量做出过评价的节点% H: z2 u+ ^  Y2 t7 f+ U
[set note (note + item j ([credibility]of turtle (i + 1)))* }3 R* n0 q' T& p) t% t# ~
;;*(exp (-(people - 2)))/(people - 2))]
% k3 n$ j! y; S  ^" Y8 C9 C0 a2 `
set k (k + 1), ~" `3 T7 z+ c2 m
]
3 T. M% A: b* e! A, K) gset j (j + 1)% O3 H+ E1 p$ \" Y1 Z
]8 c) c  ~  d: M1 z, S
set note (note *(exp (- (1 / k)))/ k)
% P) B' J6 C8 ^/ qset credibility-list (replace-item i credibility-list note)
3 u/ z: ?" J. u+ y& p% u( L& \set i (i + 1)2 K( L0 @+ v2 F
]
) a+ }3 |7 j9 S3 Nend
2 W5 D  @' h, ^2 G: L# a; b% i( t# F$ H+ N$ K
to update-global-reputation-list2 ?/ @# r1 A1 ]3 M  _5 `
let j 0# {* E/ _4 I7 }% Y+ J0 b5 y& r# G
while[j < people]7 S6 K* t8 u0 t3 k/ d
[! Y, X' v% d* t3 P( g, y( V4 p
let new 09 i- z2 z9 A- Q5 _' f  \# Y
;;
暂存新的一个全局声誉
# ?/ n8 z' {' g: C/ ]let i 0
$ _6 G  T4 C6 Y' n+ xlet sum-money 0+ Q7 T+ e& S* j
let credibility-money 0; ?, I) k1 t) F0 S1 u$ [7 @8 I/ V
while [i < people]; Z" z" Z( b4 F3 U, ^4 l! u
[
) G# p8 b' d  |set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; K" }% L" ?  H( x- V, Vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 v: f2 `+ q* r0 `) q. w9 ?3 s+ E% P: E
set i (i + 1)
3 M# b/ K$ }6 U$ h; o) `) L]
& D" X7 E" r- u4 Tlet k 0
  |$ N6 O, o& N- L4 p0 Qlet new1 0
) |8 _1 \9 o: L0 R# f3 B( Rwhile [k < people]6 L6 m; a( o; k3 M# v* J
[$ ~2 J. R8 e$ ]; x: F3 Q# n# |
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)
. n2 S$ t9 o2 j* i4 {1 k$ z# l& nset k (k + 1)
& j9 f2 c! ]1 l+ s# V5 Q+ G1 M]
5 g% J2 v4 T  F/ z! l8 hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * K, Q6 `  Z+ g4 W5 N5 `
set global-reputation-list (replace-item j global-reputation-list new)3 j+ X5 Q5 W2 p& }. j
set j (j + 1)
) A( b2 j8 Z2 z9 V]$ m9 M* @! P; C4 U0 [' q
end
# H; P+ e* O9 b. x! {$ X
9 p  W: X' ?- d* K! M
. D+ I7 k5 ~6 z0 W* |8 |7 }/ L- A6 _& M! B
to get-color7 d+ r) J& X0 \: u( A
4 U2 V+ t! U& a7 Y) ]
set color blue

2 u( L+ }8 v0 F) U9 }end+ d9 [4 U. j8 W/ ~5 i" o" S' T
7 I; [: g9 J8 v" L8 t
to poll-class, R' l* |1 I: |* l5 b: N' A( x  F
end
7 v5 ?% B7 }  W0 |( m# V* G
" a7 [$ j+ V8 U" U7 uto setup-plot1* U% w- f5 u! `  B

+ r5 l: ~2 G7 H- y5 C; jset-current-plot "Trends-of-Local-reputation"
: `( T* J+ p% q# F
* [" {1 B9 z" X4 j* V: ~
set-plot-x-range 0 xmax
6 O* F( M7 \9 k7 c  N# _

7 F- k0 F; N3 g. e: wset-plot-y-range 0.0 ymax

& _  O. K1 x+ |$ tend
4 ?+ _, B. ]3 k! D, x
2 k* r' K# Z7 n( |! i* Hto setup-plot2
/ N8 p- o' O* g0 W& E$ x& g4 f% ?( Y. ~1 r. l) r
set-current-plot "Trends-of-global-reputation"
! n/ Q( K+ i: n' Z

& t0 z& m, c9 V0 z. lset-plot-x-range 0 xmax
* L, l! r6 w( ?4 u# q

! J+ r: I( U# zset-plot-y-range 0.0 ymax
! e" f& ^4 T% {1 }
end" Y1 v& E( v' @6 }

4 U& w+ n- q8 i% K5 ?to setup-plot3
2 v# y; R' y7 m. Q& b/ u$ b- u  }' v8 U2 A
set-current-plot "Trends-of-credibility"
1 u4 P* N0 o8 ^
- X9 B# Z8 Q+ r! M; o
set-plot-x-range 0 xmax
3 z" F$ R8 D" m: t" f

1 G$ p' ^/ i2 L# Aset-plot-y-range 0.0 ymax
' S- c! D5 U, ~8 R9 k  |. r9 G  v
end7 {7 ]8 D6 _% @

5 f5 E- O# ~* z8 F+ Z/ bto do-plots
5 ?! r! u+ [+ W/ r/ @+ B  ]set-current-plot "Trends-of-Local-reputation": e3 M/ w1 X; q, c  Y
set-current-plot-pen "Honest service". P  T0 L0 J6 o2 u4 t
end
9 P( P9 O6 a, V7 w, U9 r' W4 M' X
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
  X) c7 @1 x0 f" P& [  K, i, h3 J9 e& {8 Z
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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