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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:
2 b+ W6 p. P' y% jto do-business - p) v: ]( _% J! y1 d8 S; W( K
rt random 360
& K, c- L" o% J% I) ~0 ] fd 1
( W& `2 g4 @1 y6 h, j, d8 Q ifelse(other turtles-here != nobody)[
4 I% _2 n1 g- |7 i/ h   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.4 h% F, w( [0 N" B" m2 `# M" h
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 u! y7 p( R% r1 W" [& H. o   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 k$ k  s8 f' i8 p   set [trade-record-one-len] of self length [trade-record-one] of self! H* W" n- E$ B) z
   set trade-record-current( list (timer) (random money-upper-limit)): Q; p9 S! x& l4 _$ v/ S, w& o
: `# e% V6 ~9 J7 ]3 F! M) o2 N+ Y$ p0 b
问题的提示如下:
. p- ?' t! X6 _  r
* r* f& d5 F9 \5 Ferror while turtle 50 running OF in procedure DO-BUSINESS3 R' F6 n- j- v! a. u
  called by procedure GO
8 {" N0 A! Q4 @$ A  y  zOF expected input to be a turtle agentset or turtle but got NOBODY instead.  q" e* A2 _; M: v0 a+ X
(halted running of go)$ ]8 K% _0 u; ^' p9 e! M  L; I( r  I

( f8 H% C# l/ p4 d7 r" X8 \: h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~~
! n7 q9 g- ?" s* ?6 N7 v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* x8 |9 G2 `9 r( I( L  P, p
globals[8 }0 F8 t+ L( P
xmax
6 |- e, L) z- `8 Z" ?* S2 C& Lymax
# O6 T; t- N4 _/ g5 h, Y: ?global-reputation-list8 o0 G" I. e7 I" U3 v

, T% g" l1 {) d;;
每一个turtle的全局声誉都存在此LIST! H; ^+ D  J* s* r
credibility-list3 t! G! P" l( N! {  v. c7 I1 C
;;
每一个turtle的评价可信度2 R, f1 q; E* R5 M  C; ?
honest-service
1 X6 M. o1 F9 B2 x0 ~unhonest-service
# _- ]6 D, w& p& d; [7 Uoscillation
; @: @/ u6 O  s  t, frand-dynamic
$ m1 K% u2 Q2 s& l]: a% t$ Q  M2 Y+ {  @" v* z

3 H: [8 J( S8 H3 [turtles-own[
5 p4 A4 F& Q$ Q, Jtrade-record-all7 O& F5 {8 D  ]8 `( }6 I
;;a list of lists,
trade-record-one组成6 E  [( c% O& q7 O: O2 W# e
trade-record-one$ Y# A/ d. e3 s& W* g1 Q
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! J! U- g9 D0 d4 J/ ?2 T

$ X! _1 {* @+ S+ j9 r3 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]]
2 z; T$ o* L1 z; t+ }/ S1 etrade-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]) Q# S1 D% ?3 y: k  F( n9 k
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, S3 E4 U% F5 U. }. j
neighbor-total
0 p7 Z* w5 t4 F& q* A;;
记录该turtle的邻居节点的数目- ^8 C6 h/ c+ p6 O* |  Z
trade-time
' Y. u' c5 [, d, `9 v" a9 s;;
当前发生交易的turtle的交易时间
$ W) c9 _" }! ~1 n6 S& c) W: Yappraise-give
9 h2 ~8 _% @' h5 R, I0 g; X;;
当前发生交易时给出的评价$ K; _4 M; }* e0 h5 w
appraise-receive
# ]( D  O' v2 l& T& |& G5 X;;
当前发生交易时收到的评价# o) J% E7 |; K/ ~+ e7 ?" b
appraise-time
0 U8 p' k2 X6 K3 [5 ?;;
当前发生交易时的评价时间
$ _! C" i7 H' {; f& ^" Xlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 @) t  t8 ~4 y8 V( a$ p6 ctrade-times-total
+ ?; g( a7 F1 P( l: r;;
与当前turtle的交易总次数+ v# }/ j( ?1 t* {4 x; l
trade-money-total/ i# D# w; s$ {) w+ Q, l3 F, Z
;;
与当前turtle的交易总金额0 N. k, Z& [! @# k# j1 [
local-reputation( ], Z. ^. [8 T9 V0 u7 h7 H# e
global-reputation1 \; K" x+ G) A- w
credibility
, a& y9 Q. x7 j6 E6 k3 R;;
评价可信度,每次交易后都需要更新! W% V, ]: t8 M2 z
credibility-all
5 U6 |1 e0 o/ h;;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+ G% D0 Y' F6 I5 @& a1 q

# o7 U7 D' A$ j7 O2 K+ ^& b& V: u;;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/ u- Z9 j3 i" P' B% G% D6 ~
credibility-one' p# E+ v+ X0 I- Q- |' b
;;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people0 B6 d9 Z% |7 n9 J
global-proportion% ?3 O; j. J# J- n" H' t. q% `5 H
customer
, Z6 b/ {0 i& _3 H. w" k( ?customer-no2 X5 z' o' _5 f. H* B9 [6 B
trust-ok
- ]! K/ y3 O3 ntrade-record-one-len;;trade-record-one的长度+ f! s* U: P, P6 m- F
]
" g# |6 [7 Y1 w1 u
$ x6 A/ n  @9 d  b4 j;;setup procedure4 I9 ~, \4 N6 b# |, l* V7 m
5 h; F2 D' F0 S6 t# V7 d; `2 ^5 w1 K' v
to setup
; D' Q4 {8 E# d2 Q( U" S
6 b! X  O& N3 m3 I1 d% w. _ca

. O4 R1 C/ t; ~0 s
3 T1 m1 R7 B' h# \- H- ?) _1 jinitialize-settings
+ V- R3 s9 }. i; N! `
7 v  V$ k: D0 g2 K! L( R% e' Z6 j
crt people [setup-turtles]

) Y) _+ F  n8 H0 R# v7 J) s6 a
! C) i5 H) A/ E+ \reset-timer
- [0 Z9 C& [$ o  G/ B  n

8 n* h9 x# c' n5 u8 \: N# ]+ @! ypoll-class
) o4 v7 X$ w# @: N3 y2 s) u

0 O! Z7 i: U) k, j# Q+ ^$ gsetup-plots
5 P1 _5 }5 ]0 d4 O4 ~

$ f& q$ p, B- b7 ]  ldo-plots

. S& O; a# I* D7 ]) n2 L& o4 w2 eend7 m! ?% U, G# a0 W/ D4 L' C
* i4 P/ z* R2 n1 M; R+ Y
to initialize-settings9 E2 O$ m8 q, ?% O" i
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set global-reputation-list []
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set credibility-list n-values people [0.5]
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set honest-service 0
  b! q  @# [- i- j
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set unhonest-service 0
! K# J  v* H! ~$ Q3 O5 o
' W  x  d' z5 r# ]# W9 v
set oscillation 0

0 V7 \* V1 a8 M, }. M. q+ C9 |# F! |
set rand-dynamic 0

; \# y& {$ [2 bend- u) P2 M* ~( _5 }% K) O* @* D
! M7 U) k: c8 N( Q
to setup-turtles 4 _/ Q6 x5 Y" _$ K: _1 r( F% ]
set shape "person"
$ ~$ N: Z/ r5 R9 ~setxy random-xcor random-ycor
; v0 X2 [4 y$ \7 u, N8 q; Hset trade-record-one []7 S' ?' p6 Q7 B8 G  H5 y, b
- ?# p* Q/ T# T: R
set trade-record-all n-values people [(list (? + 1) 0 0)]
0 w! n+ Q) v6 j8 \2 j
, x/ z1 _, K% I; j
set trade-record-current []
3 D. {; c/ {; Q5 Xset credibility-receive []
* t1 H5 W5 R0 W* B3 A% a+ N0 K  Sset local-reputation 0.5
, W: L% X4 Y+ v" m& n' `set neighbor-total 0/ B+ C9 n- W2 `8 [  _% n
set trade-times-total 02 R; _, p' @( y, t7 a
set trade-money-total 06 R1 E: n* g) R
set customer nobody. l& m8 l) }5 h
set credibility-all n-values people [creat-credibility]
5 n" D: Y+ ~' @' d- A) b: n* {set credibility n-values people [-1]* q; R% w/ y) l+ m
get-color0 G7 E$ v. b$ x6 L! v1 Q; A0 E

$ |$ C; V: j3 `" S4 Bend, h! ?0 M; Z9 Z' p+ G; O4 d

. M* Z( c# k) x2 f6 `5 y* wto-report creat-credibility" N! `* y9 H+ ]; w) {; L+ j8 ~3 f
report n-values people [0.5]
" q1 N% |1 ]  rend
( Q0 t2 K0 T: w4 i( }5 y1 X+ x) Q# q, j7 [! K! d
to setup-plots
9 {  T' J/ t; L* N5 R, u. e1 L- n9 r9 n2 S
set xmax 30
" m) y4 G" Y$ i7 M) `, x" R1 s& ^

6 U* c. X9 c: b' D' z- i* _set ymax 1.0

! j2 j' D0 F3 J8 r' T2 Q  ^$ ?, a
clear-all-plots

) M5 `  @7 Y9 x8 _) `  q1 R
5 V4 \8 |+ ^! Psetup-plot1

: k4 M% j7 w3 j  O1 `& ^" |4 ^5 W0 N
! g0 W/ e( f  \* Dsetup-plot2

1 `* q; x* w5 V3 g& Y. `. D) Y) R
/ d; [: w& r% f6 I) y9 H& Nsetup-plot3
6 u# I5 h3 U* C# A
end
% q8 x7 X- R; Q% Q
& n( @$ A1 x6 H: M;;run time procedures
% B& y# b& f1 @2 L/ v" J, O$ T0 a, N# {9 ~3 h8 K8 B+ b2 Q# p
to go
! m  y& ^1 I8 I# @; p+ m+ w# ~) k7 ]9 J/ M( l8 [$ g
ask turtles [do-business]

% z8 v5 T9 p* \4 B# b5 Kend- \, x6 j8 y# Y9 {" `5 Y

6 Q* Y* E* l2 p& {8 Yto do-business : v* ]( O6 W$ n& i/ h

9 A! U. F' Z1 G; G# i  e+ U' `4 X7 \% h
4 C+ }' h% K1 P: Irt random 360
0 o6 a  F& k% w  [7 n
. ?/ v8 L8 |9 n6 X5 H9 r
fd 1
6 z0 U# b$ O) D4 H. I5 B
" ~3 v$ V  @% j. M* u  J; O
ifelse(other turtles-here != nobody)[

; L- E: g/ w8 s! t' T
0 E/ e! c3 ~8 ?set customer one-of other turtles-here
/ }) ?0 o2 E' B0 I5 H7 ~8 E) |- w

  d  l: q5 x  i;; set [customer] of customer myself
& K! Q* l0 O: m! f* y
1 U* b* ^. v, m
set [trade-record-one] of self item (([who] of customer) - 1)
, O+ e, y# j1 c7 M[trade-record-all]of self9 Y: G- l0 k) q0 m1 c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; j' C* d8 Z0 f1 j; s* `7 ~. {

! q$ Y1 P+ N% [, m) ~set [trade-record-one] of customer item (([who] of self) - 1)
$ ?4 v( s* d% h5 V/ G[trade-record-all]of customer

% d$ I2 |9 j: a, v8 }( u7 Q0 b- [( M1 _9 x- p' D0 z$ {* L
set [trade-record-one-len] of self length [trade-record-one] of self
5 f& N! m7 g2 O5 z* h" N

. i" H. R, {- l2 h6 D9 _set trade-record-current( list (timer) (random money-upper-limit))

* B; |* f! J8 k4 T( j: Y- q
& Y, A% B4 R% s! ^7 pask self [do-trust]2 e2 ^1 G: x3 b  A8 s* h
;;
先求ij的信任度3 O1 Z. `4 x$ F3 c8 H: x4 s. J
0 h& o, E- Q8 X% j" O& Y$ E
if ([trust-ok] of self)
4 }4 `3 s9 f" n% }/ ]/ \- e9 o;;
根据ij的信任度来决定是否与j进行交易[
- G; b7 v# f) U7 v8 t5 i+ v" Vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 A3 y$ R$ J/ @/ J5 j) j
7 R$ o, [( v% s' I9 j0 K( j[
: W& c+ ~9 p8 ~; t
3 h) G$ G2 {& g3 `3 \  j7 n
do-trade
: r. J1 ]& r% a, _; ^. v

  q; r" t: v4 ?/ g0 \& y9 vupdate-credibility-ijl
8 Q" z) I* ?' {( f! {# B

1 i- c( X' g6 R! @6 G0 tupdate-credibility-list( q7 {" ]  p( a3 x# `! }% b& g) x1 D
5 K# z+ N" c$ s; o4 x5 _

: u6 P1 Q# ~4 X) t4 u& E; ?update-global-reputation-list
2 j* x2 K2 g' {$ a& S; c& `
; k' Y% X7 c, t+ f
poll-class
" U0 Q# z: h1 _5 R$ }- e

$ X" s8 d6 e( `. n9 wget-color
2 q$ B# N9 y' y/ t. C5 x

; Q# F5 K5 h! @) r]]
0 o. _7 Q9 p1 _& j/ o5 Y! g3 i
1 w( T# C  ^) x  e;;
如果所得的信任度满足条件,则进行交易
3 j" c/ w6 s5 r+ Q  N" ?+ k
( K1 W5 X% ~$ s) E! w% \[
' p1 q9 m  y* Z+ R# H
: i  O# L. L% l* i/ ]9 u
rt random 360

- p" m$ t9 o" f$ ?/ o7 X
9 D" r- z  l4 b4 |2 }. Pfd 1
0 H0 H2 U" y$ J  ]# W3 E! f

# X# ~5 e9 R7 b/ x- k]

' i" W  k7 X2 Q3 R! m5 r: j7 l" H9 m) K( K2 p* b/ [
end
  q- k/ ?4 i5 @) ~

* k7 o" G3 [# C9 b( J- zto do-trust
% N9 W3 e, G5 l! r0 K7 ?6 w4 _, ~$ jset trust-ok False
$ H/ j! d- F, I7 n0 D, S: X+ s
7 x- m3 |7 e' \) P4 U- l0 r9 k3 J
& {# e# x- \6 X
let max-trade-times 0
& N, ^* A" y0 Oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& B' n2 l# F/ [6 D* N$ m) y
let max-trade-money 0
7 d2 F% r7 K+ D9 i) Pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 ~4 p( _' \; A0 q. X2 Y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 H6 P& g) Q& ^' |- H! P* @
% i. M" i' f3 v4 J, ]
4 E) E. Z. t/ g  `. \
get-global-proportion: ?! X( K$ n- b
let trust-value
" o# `. ~% {7 q2 ~8 e+ klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
- `6 I! a6 L' G* W% _7 e
if(trust-value > trade-trust-value)
' T8 u3 t4 K% ~; ?+ v8 r: o[set trust-ok true]0 k# a4 R$ ?) q7 b8 [
end
. G" h4 i: y7 b4 E+ Y; ^) x9 s: A( E' Z8 g. R
to get-global-proportion: V/ a, u. Y: C* J( H  f
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 Y& }  h( i) Q0 y4 O[set global-proportion 0]0 o* M* n" `4 l. [, `
[let i 01 Z- {& x# y, M! X5 T' O
let sum-money 0
! x+ q# n) \& O  Ewhile[ i < people]) B8 g+ a3 O) u+ P# F  U6 |
[% [6 j) k9 I* ~; }7 |
if( length (item i
: Q. o" J* {$ a% b8 |5 m[trade-record-all] of customer) > 3 )

4 ]( A4 r( L3 A, O% h% Z% [[
+ E' J* J& W$ G& D* vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))' c$ u3 x0 [* l1 t& l
]8 R. N$ g6 ~$ [/ k- G
]  x. |* @. u: E6 e. F: i! S
let j 0
/ Z: Q# }! i% p/ X) hlet note 0/ ^" O9 a' h9 }
while[ j < people]
  U/ P5 _; r; a4 {1 b% O: P' g/ o[! m& r" e* U6 W: S
if( length (item i6 [* U8 A! v) Y9 p+ D
[trade-record-all] of customer) > 3 )

! J2 O% E, C( z- b5 a[
$ J$ F1 Z4 Y( X1 e4 difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) M3 X1 H+ T! l  J. x4 L[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# w5 ?7 G3 k9 A6 O
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]4 o. u, s# j2 ^# x! N9 ?
]
' H2 J8 V9 b; k) @& C9 F]$ n+ O5 D/ j' y$ i( S  M
set global-proportion note
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end2 f% o, N8 a' a, k% P  a- m
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to do-trade' J) r( M) o6 s1 N5 v
;;
这个过程实际上是给双方作出评价的过程7 K7 R3 o: T0 @4 y' r  t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& x$ X  A9 o& I! m  ]: y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
4 [, t# O; U! V( a, q. n. Vset trade-record-current lput(timer) trade-record-current" U' I1 b$ a3 e7 |( n
;;
评价时间
( u# F; d( f& J% U  nask myself [; Z1 }, R" s- y/ q. M
update-local-reputation
8 P1 i+ E! a1 X6 n, Q% Oset trade-record-current lput([local-reputation] of myself) trade-record-current
0 ^5 L* }4 j1 G]
4 v/ E$ ]8 `9 k! h0 T+ l3 c5 s; Xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 y9 B/ b+ c9 @4 z+ X;;
将此次交易的记录加入到trade-record-one
: L- E% o$ K) w5 jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& D% R2 F  z% b2 f6 z: a1 @
let note (item 2 trade-record-current )
- a: O) ?6 @' P0 {- iset trade-record-current
, _$ S; n1 D) ^! ]8 }$ _" A$ y(replace-item 2 trade-record-current (item 3 trade-record-current))
, j. Y* R! B0 j# u7 \" K/ s- F
set trade-record-current
% B; b3 E5 n/ O(replace-item 3 trade-record-current note)
$ P1 h8 s0 R! @
$ r" \2 k& M8 {* ~/ m" f
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ask customer [
/ N6 a1 M, j1 S& q; A* k; Z* Vupdate-local-reputation/ f7 a" I; ?$ q% y
set trade-record-current1 l2 g2 t+ u% q- Z
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. X. |/ M# I$ \) m% |4 \]
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+ f  ?, U  k1 O. A' t) @9 {
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 {7 M" I' J& i, A! A& A- q0 B
. p, `1 L1 R! |% M
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 b" W5 @& X' ^+ V% P# S$ ~
;;
将此次交易的记录加入到customertrade-record-all/ Z1 o5 R, b. D+ n5 }* K
end
* i) h5 \, R, m
) w% Q/ N; n0 Y+ Qto update-local-reputation& z+ V# O1 `: p/ p+ c; L) M
set [trade-record-one-len] of myself length [trade-record-one] of myself" ]) J2 f* M9 q8 w$ I2 f
* V5 X0 L- d# H! m% k

4 H6 n5 m: d$ q, T- ~' U3 ~;;if [trade-record-one-len] of myself > 3

4 @0 {" d0 B" R/ |update-neighbor-total
5 a3 }+ X' U1 E  t;;
更新邻居节点的数目,在此进行; ~, [2 q' B+ F# C
let i 3* k* K* l, f# W
let sum-time 0/ j4 {; X! W5 y  o. \6 U
while[i < [trade-record-one-len] of myself]
* {# \5 Q0 T: N+ D4 [9 P[6 f, I8 {4 b9 y* l9 t$ ^
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  K4 e4 U  h) I
set i4 e# I% S6 K; Z, B) w, O% o! D
( i + 1)

% Z9 V( W+ _7 y2 `0 C& ?]
' Q! l. p! U3 k; e4 v) C: z6 p( elet j 3) J0 l6 c" c9 Q- d& ^
let sum-money 0& h+ @9 R& v8 T: R0 H# f
while[j < [trade-record-one-len] of myself]
& L7 E& m. H: P- Y1 Q[& Y* N4 f9 }" s$ g# r6 _
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)8 a" Q( Z6 G5 @+ k% D7 ^0 A
set j
3 y+ }3 K% F( }: d7 s% W( j + 1)
( W3 E% b$ X; i9 v
]
; I! r5 v) w- b$ y# a8 nlet k 3
6 h) }0 y8 p6 glet power 0
; Z; Z9 R+ T6 h9 ~8 C* @( z2 X) Z5 Llet local 0( i% _  B, M* I( |6 j5 }5 r
while [k <[trade-record-one-len] of myself]: T1 w5 M) K- w* U: X1 j( G
[
" w& Q; f, @# Z* `( N& kset 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) " _0 K! K$ X) u8 E9 \2 f7 P
set k (k + 1)9 D* V( w  G) Q1 K7 l
]
- M7 V: E: A" j6 \3 [: C9 Lset [local-reputation] of myself (local)
2 P+ _1 Q! _$ y  W2 I2 u- n5 ]end
0 V5 m2 T* x. C( Y' j
4 \6 D4 S) ?/ b% }7 V3 f8 \7 yto update-neighbor-total- D- {% h1 w& ~) r$ M

) N5 B, h; d3 r& S5 bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ ~3 B+ F/ h) ?  Z! Y$ Y6 L9 O2 o7 t& ^# E6 e+ i! Q7 ?
4 k' Y" T. W+ u' j/ M
end
. K, w$ g$ P; d* j
: ^2 M+ q  S5 K+ k: [! Rto update-credibility-ijl ! Q# D7 [" d3 E

3 \& O6 D4 [3 ^: x3 A& s;;
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。8 ?- v7 `+ R* D% ~7 U
let l 0
: Z9 u, c( ]7 T& Rwhile[ l < people ]2 Y$ I% L+ C5 G' j! F
;;
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
0 m( I$ f2 X$ Y[$ P  R2 l5 ]; V3 [
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 l5 h; V% G) [9 K0 J
if (trade-record-one-j-l-len > 3)
( n; a/ H% n. d* d3 Y* G4 K[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one9 a1 `( f! g) t5 u" X+ Z: E
let i 3
* v: ]8 [8 a, Wlet sum-time 02 w3 ^/ C2 U7 c0 L; {; |, v* t  E& h* N. E
while[i < trade-record-one-len]
* z( \; p4 m. l6 Z- Y5 F' i[
# [3 m" D. m* z" N  X$ `) }set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* Q. h9 K& n: v# `& T6 |set i
+ @0 X! U4 O  k' l( k* N( i + 1)

- ?  F% `9 h8 I2 o2 D5 j+ U- f- ^]
- X' y, F% W1 T1 ~/ i7 Q" xlet credibility-i-j-l 05 M; Z$ V- E, L7 i4 g
;;i
评价(jjl的评价)
, f9 U6 b  \& a! Y9 o( P4 llet j 3
, ~/ z0 `0 H1 g+ ?+ U* x. M/ ilet k 4
, J* C$ V$ ]4 M) j" M" twhile[j < trade-record-one-len]
1 C5 V2 M" S' t1 b# s, V( z7 ?6 r8 W[- b9 X! v! C& E
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
/ G# ~! e* R$ T; o% Nset 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)
/ G& {+ _% i* \. }+ r( Mset j
0 n& x) m8 H+ Z* L2 }( j + 1)

+ R9 i; C! E0 g% w]- C% v- s7 {( @, u) l* Z- {
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 ))! A; o( d2 O5 l: O

2 V' C. d5 X2 Y8 N
, h+ q% j, L  R. N) V9 Q& d. X
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 H/ L/ K/ X1 |+ {. \' |9 m! L& g
;;
及时更新il的评价质量的评价
+ t$ v" k; x$ eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 Z. D' a# V2 {* Z4 Jset l (l + 1)6 K0 U+ b3 y; O% ]' o8 p
]* A# D9 `# i  E' V$ L- T
end# n, h2 |" Q3 e2 E
5 Z  A1 o6 N. |/ |  {3 d  J
to update-credibility-list/ L' ^. L" K# s
let i 0' u7 A) E) B" p9 b3 N, m7 ?
while[i < people]
  ~2 e/ U5 [# f+ }3 {[& [# a; P8 p; S+ `1 {8 Y
let j 0
7 R7 Q; K. I' }6 E$ @$ b9 r- qlet note 0
2 C8 K6 z7 y9 o$ ]" g4 m7 p1 nlet k 0
# u  A) F; S  ~' z7 _# S2 b' m5 q;;
计作出过评价的邻居节点的数目
0 l3 X+ ?, r) \8 kwhile[j < people]
, I" x$ [) q9 E3 L+ s5 n! ?[9 p% r* k( `/ g$ z7 [* M
if (item j( [credibility] of turtle (i + 1)) != -1)# E# M( M6 H) A
;;
判断是否给本turtle的评价质量做出过评价的节点
/ W) `. E; W" |5 N9 W[set note (note + item j ([credibility]of turtle (i + 1)))
2 v- ~$ \* d% c2 h  m$ S;;*(exp (-(people - 2)))/(people - 2))]
+ T! a( v& ?' Q% K5 K
set k (k + 1)
( @1 v/ j' M) k' m3 V1 Z]" c) K7 S: `" F; @9 Z
set j (j + 1)( Z: Z6 p4 c1 T/ w1 ~$ B
]) O8 q. W' T& _, t! Y
set note (note *(exp (- (1 / k)))/ k)
: {1 i2 n6 u$ W  B1 m: @set credibility-list (replace-item i credibility-list note)
0 F8 C6 u7 q/ l+ |. dset i (i + 1)+ n9 v# B, K1 B2 I" K; f& p
]# N5 {/ M7 [5 U, Q! E4 Q
end" \) m5 D  }# i5 t: g* L1 ~4 m

. x9 J9 U$ T# s. ^  A. w/ R; zto update-global-reputation-list  ]4 C1 D* e- ?  H
let j 05 F  A' g2 |. ~
while[j < people]# Q. v; m1 d: e! n. G6 b3 U
[
! P6 Q9 g; }9 k2 `' {' C* g  Plet new 0( W7 ^( I! y  ]
;;
暂存新的一个全局声誉/ V9 N# U# M7 D
let i 0
, ]6 B5 A2 ^8 E6 u3 elet sum-money 0
7 `/ V/ M* e( e0 Hlet credibility-money 0+ j" T8 w1 e' E. N  A/ d+ m
while [i < people]
! f  B8 P6 D* J& R7 m[
) g* m/ v  M* j5 ?" K. oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, T3 m8 V! v/ T9 p- R3 Dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 |& y' [( V9 z. y  x4 `set i (i + 1). H% x5 ~) o) j# M$ n; H4 A' y
]
: N/ ?$ H- ~6 |* ?- j. ylet k 08 [; S( C* L6 r
let new1 0
7 M: }4 q$ z) M  l0 Xwhile [k < people]1 a. F' h: e2 x% y$ g: v
[' m: j- }+ C" Q2 L8 _0 o
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)
/ z5 {& C  B; _) t1 T  ]; |2 x* i: ]set k (k + 1)
1 f) P! o. j/ s- g]0 H- j, C, G4 z+ S& T  j9 G  s
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   d  E0 n& I9 ^0 b! y
set global-reputation-list (replace-item j global-reputation-list new)
) @& K4 {: e% X9 C7 ^set j (j + 1). Z; k& I' J( a+ m; y
]' ~. D7 B+ f& \; Y; V3 S
end
/ q2 A* H3 @6 ?8 N8 Q4 @6 @
" {" |2 Z8 L8 k3 d3 `% {/ k& g; i+ [+ `8 p

8 n* f  t# ]. \( H" [  |' Yto get-color
3 r; e0 B# ]( d  D' a: J7 X8 Q
6 K* k& {3 S- i. Qset color blue

5 e) i, }, K  t, kend- @9 I6 H) e/ [! \4 \6 E- f

3 q# D3 A( x9 ?7 Bto poll-class
: m. }9 w- D+ X. q5 Wend
( i* e2 m1 N7 G: F
( G* k7 _, ?* F7 x1 W7 j. F) z7 Qto setup-plot1! t0 v) i6 G2 V; S: x4 e
% @$ ~) R1 ?& G" [+ u$ S7 Q
set-current-plot "Trends-of-Local-reputation"

4 ]3 ?4 ~6 n7 Y* ~4 e) A+ p6 w3 l
6 A! J/ h* t9 I/ p7 V9 nset-plot-x-range 0 xmax

' A4 ~5 Q" e5 d  i
: I  B6 k  a# dset-plot-y-range 0.0 ymax

- b8 E, p- k1 G; M# r# N1 t& d1 kend. o  {) K# `5 @

; z* r+ I8 U5 a* Tto setup-plot2
3 z# D4 }! q8 u, n
9 o- Q/ Q( @$ h" gset-current-plot "Trends-of-global-reputation"
) t! m) s$ L# ?

2 f6 Y. A/ @3 s$ kset-plot-x-range 0 xmax

& Z. s6 O, h& r3 q8 H# k! v" G' i  k' n$ A" G
set-plot-y-range 0.0 ymax

/ i" {# V, y9 s4 I& f0 K3 C3 }end
: c8 A% f1 O7 K5 {$ p7 p
' V; `, `6 H( j) {to setup-plot38 f- b# X" B) P2 J4 h
5 V: @) A! |9 E/ k# e' t8 {
set-current-plot "Trends-of-credibility"

2 a  l" x, B& |. c/ e) {+ z6 ~) d% [8 k
set-plot-x-range 0 xmax
, W0 `9 O0 M9 }0 ]" H$ j, r
- f; Q8 S0 Z& @& @8 A
set-plot-y-range 0.0 ymax

1 h# `, d* y! L4 B: y/ X3 i( r5 K0 Bend
) i4 R2 ]$ g6 y; c# \% g/ Q1 Q" i! s
to do-plots) m' s) p/ ]3 X3 f6 ]
set-current-plot "Trends-of-Local-reputation": y  m% b# p) Q% z" Q: k
set-current-plot-pen "Honest service"
4 i' P1 _: l( _9 send
0 t$ d: L* ^' |! O& `* |1 C& M; N5 z" h; w7 d6 X' ?! i2 J, U# p
[ 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.) I8 \3 J6 Q& b: u+ `( l
$ g6 X) D. {/ x4 X! E& g/ [
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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