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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:7 |: ?, }& D+ u) a
to do-business & p1 ?. Z5 S( C7 c. N6 \; c
rt random 360  E+ c2 r2 i6 e2 @/ y$ T, F' e
fd 16 P3 D& v, y; W  e2 g; k
ifelse(other turtles-here != nobody)[
4 P& J! h, {& F0 G1 @5 G   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./ h% D( }5 R3 X8 ?- G8 O
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: n, y+ _+ c7 u( ?   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 K5 S3 N1 h; o5 L* [
   set [trade-record-one-len] of self length [trade-record-one] of self" Y3 h- R' W  N0 `& f; U1 U
   set trade-record-current( list (timer) (random money-upper-limit))
; r) w( v  c. Q6 n! U" i4 z/ j/ ^. Q% h8 e' s/ q( a( Y
问题的提示如下:
" y8 B' A) C, n7 ?
" e+ q# f0 n* kerror while turtle 50 running OF in procedure DO-BUSINESS. K9 G" S! j; N
  called by procedure GO
' L, ?3 ]1 ^- ]! }OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 }' x# a' [) X9 y
(halted running of go)# w6 |/ H4 }3 B( c" J
/ n" r5 X- I6 u0 l
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~~
( N9 S6 Q9 L# h2 X& n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 @0 v3 n$ t- D! j: N; u8 ^globals[; i6 {; [5 s3 j' t2 D" [
xmax5 o: n9 w3 x! l! W/ M. p
ymax
; ~5 b- i: u6 Y+ Y, M1 W4 pglobal-reputation-list
* W; \7 `6 d2 |2 A& V9 A
) Z8 y, V' p2 A* ]$ Y0 @0 y' _5 ^;;
每一个turtle的全局声誉都存在此LIST$ }, b6 i: B- x# C( b' u9 K. ~# @
credibility-list
( z  `1 |: u0 |3 h& h;;
每一个turtle的评价可信度
- k0 c$ l9 y& A1 u8 Whonest-service4 h3 r/ U! J5 J0 j6 N" B
unhonest-service% w, E6 E7 K& H/ W% D; ~6 p
oscillation* H7 b7 w; d. s+ E- e* p' O% Y7 [& k
rand-dynamic
- U5 J+ E9 x* K% g! G+ T]
/ J! i9 N6 c" t' X
& ^0 [( l% }% `$ y7 e% m3 Hturtles-own[4 n& \& _- w, `- Q8 M) N
trade-record-all4 s( J% |! \; @/ H" D9 K! l
;;a list of lists,
trade-record-one组成
7 S9 ?' W- F+ |# s, D. R: M) I2 D2 strade-record-one  K& e( o! n$ b. a0 E' F3 s' w
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) s- z4 W" i- [/ c

# x  e# e* V8 S. S  X, S5 t;;[
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]]
7 Q0 I/ a1 d7 a! V+ O( O- ntrade-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]( _$ e0 P( P5 d8 r! y1 t& H
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list3 L! S; g, ]& X* `# [
neighbor-total
; [7 d) k2 x- Z3 b* i;;
记录该turtle的邻居节点的数目* V( j# X4 Q3 o+ |4 G
trade-time, K5 T) V" ~9 B9 o# W$ D) f) [
;;
当前发生交易的turtle的交易时间8 u) g# s2 w/ ?/ l; M# e
appraise-give* p1 u. y( n; F( z, x
;;
当前发生交易时给出的评价% a' B+ S( E4 o. R
appraise-receive
: V( ?% z/ N7 ?' f( g% `8 J;;
当前发生交易时收到的评价% i. k( d5 B+ {5 S7 J: f- C
appraise-time
* f) X2 O% V6 F0 r2 S;;
当前发生交易时的评价时间' [8 q2 g7 g$ l2 ?: h9 H; s2 a
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
' w2 L% }& {9 x3 M8 _& g" otrade-times-total+ h: T4 f7 @3 E9 \5 C- @- R3 U
;;
与当前turtle的交易总次数: F6 k1 m. r7 g  R$ S
trade-money-total  U3 ~0 b. ?9 {& H6 ~$ i
;;
与当前turtle的交易总金额* j" X: u$ T' K* T) S/ @5 O( U
local-reputation
( l7 Z  H9 }: t8 o1 Y% a8 j2 o. b# Sglobal-reputation
0 z" O4 Z1 S8 ]1 _credibility7 l+ v6 h; D/ i) N' k
;;
评价可信度,每次交易后都需要更新; i4 ^! m: z- ^; c% N
credibility-all# J, |" U0 U/ z# f7 ~
;;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
( B4 w9 A, Z9 j% [. J
/ Q+ b" l2 q! H  c- p! f3 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
; [) i) |0 k: `! Q+ r& y0 Wcredibility-one0 ?( m9 d+ }7 U! |7 e; _2 x: [' ]
;;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people7 F. l2 n5 v( j; T' z6 f
global-proportion' o4 h# X/ u2 |" b
customer/ U6 r+ |- m  t0 Y: p
customer-no  Z3 L# }" m5 f# E, f  H/ \: z% X
trust-ok3 i5 t5 d' p0 g6 m
trade-record-one-len;;trade-record-one的长度" a# W: ]4 X3 }  k% m0 C- v5 e* f
]. F' L# I& f- E6 }; N; ~* {: X
# N+ }9 N" Q8 l8 {" y
;;setup procedure
/ c( X* O- q' ~+ y* \) \; y1 r+ c9 `5 o
to setup- v% Z- ^% h& E! O
1 k2 v- t3 `, P
ca

. d' K4 p0 N( c
8 L! I4 D6 P" D7 f" Tinitialize-settings
8 {& }  D4 s5 y% h3 G; j

! }5 Q* o% l# @crt people [setup-turtles]

, J0 _& ]7 j2 ]/ q" _" Z( S! X( h: n
reset-timer
  t5 [1 D7 h% A

( J7 P! A7 B4 i7 n! s1 H) bpoll-class

/ f( B. P9 M2 I* \3 z9 T2 \
7 q6 y3 L8 W2 L6 Nsetup-plots
# s6 s9 A6 a) C' G

- ]4 J* B* B4 b8 I4 edo-plots

$ c1 y/ Y$ v9 ~5 xend# |, d7 l4 f9 I- q& _; j

: b9 C) F0 u# U$ Vto initialize-settings
) L* |  c) b# c
$ o9 k- l1 L5 B$ Bset global-reputation-list []
0 n1 i, ]$ T3 ~/ a! T, Q* J

8 v7 L0 c8 [- C9 B3 t  M; yset credibility-list n-values people [0.5]
3 |& u! A! ~  d, J2 e

% V5 g& f* U" U- y, x/ @set honest-service 0
% e& ]% `7 h2 ^3 E; _

* `/ B6 W; j9 w- R$ \+ pset unhonest-service 0
, ~6 E( M. z8 c0 F2 C3 X1 M+ K

; X2 p- M7 L1 G5 X9 K. e3 ^set oscillation 0
3 H: S0 a/ _/ r( ^: W
: h( g  u9 I; P4 F5 c5 K8 F
set rand-dynamic 0
0 \$ U  U5 P' P# `  O; H7 e2 F
end
8 b  u6 C) x) u2 U& j9 g
% v2 ~1 ?+ V5 A6 O  j& mto setup-turtles
' _9 y$ H; U& Q9 ?" W& K( `$ l- Rset shape "person"
4 c' `& ~! |1 V+ Hsetxy random-xcor random-ycor
, ]' K$ @3 t5 u/ k# }/ `7 p6 W$ ~" @set trade-record-one []
  v% P# M; X1 N1 G  W. }

  H* N& f) g3 g+ Z  r4 g: }7 ?2 Aset trade-record-all n-values people [(list (? + 1) 0 0)] : V8 r$ _' E: ]% D8 [
- z* @9 G3 a% }% B$ ]* {+ E
set trade-record-current [], C3 S/ ~2 {8 n! w! r
set credibility-receive []
8 F4 v6 ?+ \. _1 Q0 ^set local-reputation 0.5( u: k' Z. n+ j7 B
set neighbor-total 0' K0 j% L; s( [
set trade-times-total 0
, J1 w; x' f- U% x8 i+ gset trade-money-total 0( n9 \) P2 s% t
set customer nobody
5 j/ H' m4 F  i8 gset credibility-all n-values people [creat-credibility]
0 y8 `- |+ y, C; t4 c0 H2 qset credibility n-values people [-1]
9 A4 G! ]! P# C$ _3 gget-color
5 ?5 \$ |* O: ~6 U. o+ M$ E

  K! j8 L: ?5 i* h  X, L- cend" ~0 E$ C: x: p8 ~0 I4 |" x- p

/ R+ G) @- w# i. O( p' Tto-report creat-credibility5 \1 _7 G, c9 P0 \& l+ e9 t
report n-values people [0.5]1 v+ [+ j9 d+ |. f/ K
end' z" Z$ |, C/ Y$ [6 n' i2 J/ m9 k
' o: d4 e6 Z/ f& b0 n
to setup-plots
( ?% H1 w; Q- T9 |( J+ L3 \; l3 N3 [% E- z: D
set xmax 30

2 @' m8 ]& P4 h/ K( y9 n' ^; [; [7 D* j6 r: j  e. v
set ymax 1.0

7 z8 d/ j1 ]" Y- j
; C$ `0 g' {$ I! j, \" lclear-all-plots
6 R6 W+ S; G5 m" w/ Z# C

  O' t# C8 V6 X- Vsetup-plot1
6 y4 g+ e# u! _8 m6 T

! U! [. O; k0 P( q6 qsetup-plot2

) H! o4 R3 u6 a- |5 o0 a. ^- f  B$ z5 G3 w8 J/ _
setup-plot3
2 c6 H6 g) e+ S# f
end! d) r/ n# P; X5 ^: h3 o" L8 J* d7 c

' i: Q; f0 A* B& r;;run time procedures  \2 O+ w4 ~" Y3 J9 f, H, h

: K0 w9 {2 g  Wto go  @) H* r# ]5 w- b4 S8 j0 i
- J' C+ o: V" B
ask turtles [do-business]

- B/ \+ v! i* Zend( c+ Z. n7 U& I9 D
1 O, S7 i, N. P2 G! X
to do-business % e$ d$ G/ L5 J/ _9 I  U+ ~( {
" ~. w  c7 R9 U6 a
, s/ x1 T- C& p8 q6 C+ Y: F
rt random 360
# X0 D/ _' P5 E$ t/ S' s

. {. n: v% x7 x" p  K! yfd 1

9 Y0 ]* z5 o0 R1 a# h* R
5 ^; \8 |3 O6 J% Pifelse(other turtles-here != nobody)[

& s% x2 d3 @  w& Y! @' F3 X& E& X9 J3 c
set customer one-of other turtles-here
7 p) F6 v+ v8 n: k
2 U+ _- r- R3 ^  ]8 R
;; set [customer] of customer myself
- K8 O: z: J0 M: L( o+ I% ^" K5 U

9 }8 G, v4 A( Kset [trade-record-one] of self item (([who] of customer) - 1)
& M# C; M. u5 N( T" A& l6 r8 [[trade-record-all]of self6 ?* L: c  m# o( E3 m# V
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! ?' K# h  W" U" s9 Q
1 S- g; L% L; D3 Rset [trade-record-one] of customer item (([who] of self) - 1)1 e! u6 ^# }0 V2 t+ W  a
[trade-record-all]of customer
6 U$ x  u/ y7 u$ C/ V4 Y: U9 d4 Y6 I

% h& O8 `  d& ?7 A0 S$ [set [trade-record-one-len] of self length [trade-record-one] of self
/ K' v8 z1 g. A! E
( t8 f& K9 K: Z/ `1 v
set trade-record-current( list (timer) (random money-upper-limit))

5 z2 |! i$ j5 f( |. _/ ^) M0 ~/ U, E% W
ask self [do-trust]
/ B% A! d# l8 i" F& F;;
先求ij的信任度
5 G& h1 r- \# [/ {3 U
3 P- i7 j' N  Q3 c! aif ([trust-ok] of self)) S# l6 s# _% _+ W
;;
根据ij的信任度来决定是否与j进行交易[. D( s2 U; @& ?: Y2 ^
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; d: U7 q" b8 P, [% F% P( j4 E1 s, Z& J- Y0 U1 s6 c
[

  a$ B6 N! x3 \" A, N, {$ x' W6 _# \% f4 h
do-trade

" J5 g6 q' ~; B9 _# f, B- x3 S* L8 M8 P$ e
update-credibility-ijl
- E5 @% N# N& ^

# U9 R: p+ F: h  q3 Dupdate-credibility-list& X+ ^0 T- @2 o3 L
2 ^" f- v2 M  g6 s! [
* A% i: J4 W, h, ?
update-global-reputation-list

" ]# ]7 k) q. [
9 {+ o. T- h) g5 ]! Rpoll-class
: g8 u# N! n: c' t
. w$ R+ D' }( g) E
get-color
$ B4 Y. M! w, F: y1 j8 f. V8 q8 l5 l

2 ]% o5 A! G* c; u: Q]]7 [5 ~$ L3 M# W" o2 k1 R$ w1 i" p
9 k" _: m7 u" a
;;
如果所得的信任度满足条件,则进行交易  `& G( c2 E, g! S: {; q

5 b9 F! S1 s% M" r& A: Q2 {. U2 M[

" o7 c  |* V) @7 h( c
/ e8 p! h8 j& K, s5 ]9 grt random 360
( H- b; l4 A* F3 a7 ~0 n- e# V

* O7 g; y" M: K  ~9 b( mfd 1

4 F8 c- Z* [! p- n
( {9 E5 e: X2 z# A2 H]
3 i7 C, W: Q* G" U2 P3 V
* ?6 w: P* w: D, `& f2 c
end
2 L! |0 m* y/ E/ H1 \& W) @1 j

5 s( K) M3 U. S- `, b2 Kto do-trust + I6 v& z: x+ {, ]' T6 d
set trust-ok False
; p8 l2 ^. H! x+ y3 j8 v" S, m0 Q0 u* i

! V$ `/ x& W- h* N/ d5 o/ k0 dlet max-trade-times 0
9 F2 A( n0 t2 I0 [1 l& O/ ^foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& q4 x! P& k- h0 p; U: ulet max-trade-money 0
, x/ |$ i: @0 G7 bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) `# @9 d9 z2 W) r8 s2 w% m
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' G% c; r  X" o2 F) z

5 Q" s- u. p! o1 q9 j! w
" `0 s; M7 ?5 y. I
get-global-proportion5 _% b3 k' E$ t7 C0 b1 R& u: c. }
let trust-value$ a  c: J0 p/ p) n" M% s
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

8 C, y1 D7 I# p' z2 u+ m2 gif(trust-value > trade-trust-value)% u& E' I! b' o0 q
[set trust-ok true]
7 p% o: n( L2 P# J& I4 Kend
/ @# `* ?) _% X1 q& r$ M6 H; ^
# U, }7 c1 l7 D3 M5 Ito get-global-proportion5 y) I* N! |3 t1 Q% a7 E
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 |+ ~4 p+ f1 Z) \* g
[set global-proportion 0]5 B: O/ U( `& P! K
[let i 0
% g# \7 d8 N0 N9 b5 a# B9 dlet sum-money 01 m" }+ w# p# b: [
while[ i < people]
9 Z5 q3 I. x: P[
( l" b8 J, _4 X% P. l; Bif( length (item i: g% O) j2 y7 n7 V% d- o
[trade-record-all] of customer) > 3 )
: x) a3 Z; a$ E0 |
[  |# Q6 s8 x3 S0 T, C1 x/ x: M1 E8 ]5 D9 ^
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& U  z2 k) c: h" E( g]
' T7 `7 C; A  H# k]
$ a& h& I$ o+ P# \' _6 E+ mlet j 0
9 I( e5 U3 o. D9 U1 qlet note 0
6 s+ a4 P! t, V- H' @while[ j < people]: o- q; F( x( j/ Y
[" j, M6 W8 H/ k5 D
if( length (item i
, |& l3 ~2 G2 D2 B8 `[trade-record-all] of customer) > 3 )

3 M) n! W; {* _5 r+ P: E5 p: \* r3 R# e[
* v% S& I$ H, S  b( U- Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! Q$ C5 U; s% p8 z/ [
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 R1 W% C% l8 [$ s, i* {[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 p: ^0 s+ B2 }9 a( U$ Z8 _
]# ~, d( i4 u, ?& d. C" X
]$ I* X( h  K# s
set global-proportion note: n: E1 _, S( X# J/ Y/ _8 P! _) Z
]& g9 N8 Z) k- s5 k& J3 o
end: h7 p  ?3 W- N7 n

# ^2 D2 }8 h  O! X- G! i, U$ Xto do-trade
9 G6 O7 X8 |; E, i: {;;
这个过程实际上是给双方作出评价的过程
7 F) y9 S$ I7 a+ s  E9 Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) W* O2 g: x6 I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 y$ j3 Q  V! I  J; q0 F& T
set trade-record-current lput(timer) trade-record-current: {* G) n4 }! n
;;
评价时间
/ Q! @4 m) ^8 h; @2 rask myself [% i# F4 w- K1 ~: M( a  P2 a0 b7 Y
update-local-reputation
( _* h- `- F8 Y$ S0 ^set trade-record-current lput([local-reputation] of myself) trade-record-current
; N: A; {: q- {3 V% a]" f. v1 d8 _0 j+ Q) m8 c3 Z5 j* o
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# y/ F2 S1 ~) Z% E. D
;;
将此次交易的记录加入到trade-record-one
7 O- V( y* S1 u7 Gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ Z/ V1 ]" \# q% J4 u
let note (item 2 trade-record-current )
- Z% B! L. A8 O( Hset trade-record-current
6 j0 v* A2 t0 f" H. S(replace-item 2 trade-record-current (item 3 trade-record-current))
; p, `, n) r! c" k. T, O* g  g
set trade-record-current7 P+ E3 h% @  ~# }2 t* Y' ?
(replace-item 3 trade-record-current note)
  Z- ]/ y1 M  q6 w' R% t/ G4 O! s
: Q6 j! X4 y8 P6 Z. P8 h4 w6 L2 g

& k2 A0 M. @0 E& n! ]) fask customer [
9 |  e5 n! }" }6 `# x/ X: M& |update-local-reputation
/ D0 n6 c0 Q1 \# Kset trade-record-current% d# X/ u  t  b0 x+ h: [' w
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* `7 S# W, e; t+ l]  O- M# s: ?( V

' H! `& H' `, q

2 K3 L6 H2 @' V5 U4 T: y, Nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( ~8 G  c2 _1 B1 _" r8 g

6 u5 v3 ~5 [5 t' j8 r7 w- x& H+ Fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' {* R" t1 s1 E- E1 u" q9 c1 u;;
将此次交易的记录加入到customertrade-record-all- U! |0 h' I  S; w' a+ a5 c
end3 s/ {# O0 k  e/ @+ s- }

9 T4 |+ [% ^3 }) Pto update-local-reputation
, I4 b3 S3 v( Jset [trade-record-one-len] of myself length [trade-record-one] of myself
, V9 b" ]# f* z7 U
, p; l. l! f9 J7 s! `+ l* v7 w7 ]7 c" `
;;if [trade-record-one-len] of myself > 3

3 ?. {1 [5 G1 jupdate-neighbor-total
6 T$ Y( y( \- J. g# S;;
更新邻居节点的数目,在此进行
4 o) x5 ~" T. xlet i 38 L. k: W# l, M* V
let sum-time 0
0 N* r  q, x- Dwhile[i < [trade-record-one-len] of myself]- j/ X+ s9 M9 J
[
1 \8 O) B: \0 N1 _set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- j# Y9 f" C; Y7 x# z/ sset i
7 b2 f  n- S. J1 [! h( i + 1)
( ~( \3 N) p. W$ e; p1 m% M3 ^
]- u  D8 _4 g' Z) B
let j 3" n3 X5 y( q2 |+ R, ~
let sum-money 0
$ U/ {  T% F' K- f$ _8 Z, Y& w0 |; \while[j < [trade-record-one-len] of myself]
3 j" F9 S# f9 @* Q9 I! \[% g7 W# S$ J. c+ D  J* O- g# k
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)( C/ ]" G: |: _$ |6 P
set j$ K/ {; Q/ P, B) f8 g  H
( j + 1)
! Z) e2 B$ c% a/ a8 K
]
" p" @8 d( O) f1 c- elet k 3/ ?4 T6 P* Y) |( Q; ~) L& U& B
let power 0
! Y4 W$ b: V6 e9 M( ~7 Llet local 03 M; v3 u0 b- q, x0 a
while [k <[trade-record-one-len] of myself]: |1 c# H, I8 [$ w1 o7 u
[
4 g8 x! I$ \" \: yset 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) " ?6 ?. P+ D2 m% |& Z
set k (k + 1)
% G0 Z; {3 v* e* f# k9 i9 R+ _) x]1 N; Y, [4 S5 h. E
set [local-reputation] of myself (local); h( ?5 L; C* _0 X- _
end
: T6 L2 j- @) x- l6 S: y. t5 F3 T/ b
to update-neighbor-total& \8 Y  o- E$ s5 j7 k& j$ ~
6 ^: c. a: f; ]" U8 `3 s
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 d: i# W7 t" ]9 ~
7 `3 H4 _( i- F1 g/ y3 K5 F8 a
; l. g$ `+ H- N+ l  S
end# F9 _+ Y$ _- D9 Y/ h2 ?# \! P/ w
: _9 \5 P; h, b3 `1 z. V7 b1 u. o
to update-credibility-ijl
  k2 s6 r  V5 ~& }, I7 H9 L
9 S# Q- I/ ~- q9 X;;
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。
5 r" n. ^' L& b3 T5 Elet l 0
) W; y! K+ l- k$ swhile[ l < people ]# ?: g; J, t, M" B' ]7 L4 v* c# b
;;
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
2 u4 I9 x- U, i7 @[- v" A$ p5 K& T! F; p* D8 s! o6 O
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 m) a" `8 ~( u; X5 zif (trade-record-one-j-l-len > 3)
- `& R3 S* W5 I/ t- ^8 Z[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
3 x3 W& r0 W. i- T% d5 H: Hlet i 3
) D+ b5 o; x2 c( I8 L8 [- _let sum-time 04 d5 d- ~) I3 o" h9 k6 q
while[i < trade-record-one-len]
3 o, M- E+ i" I1 G[
, C7 B6 u" t6 |set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 r0 V$ F) o. t, v: q8 \6 x( U
set i
" c  x! @1 K( u' i" a/ Y9 ?! d( i + 1)
( R6 P4 q2 W' P+ i1 a
]
# K" E# X: u1 r. {: ylet credibility-i-j-l 0
7 h% _+ @! C& D0 w;;i
评价(jjl的评价)' {' e9 n' g9 g/ P4 o
let j 3
0 H! O& p. M' H7 O1 j% }+ y! ?let k 4+ R( O9 H9 n/ s: \/ Q" K1 K& {3 a
while[j < trade-record-one-len], k( P( A' C% v3 G+ h
[( ~- I- V8 q3 m$ `' Z: Z
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# A: o1 B, B- o  L0 x
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)% ^3 w& {+ R: ]% F
set j! A6 L( V. d% s, Y) g7 u9 z
( j + 1)
% p% N# \+ e( T9 s
]6 @- e1 q, @- J
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 ))
3 f1 l+ {, a3 X$ j& ~, u2 ?; M1 P& e
/ g6 p; r; ^* y6 {
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 v& B  r) W/ m2 B;;
及时更新il的评价质量的评价+ h4 j# b. L& P2 z- e8 m! j' F
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 H% p. w9 L: P0 X9 Rset l (l + 1)3 E) o: y9 |2 N/ S5 p4 c  U
]
5 \8 l" H" G) @+ tend! U; H- v0 J( T% ]$ O% |" U

$ V: d( u; C) y- C" Oto update-credibility-list
; {! n- A5 T- v: L+ U# r1 Ulet i 0
) C9 C# X- r6 @) n( X; wwhile[i < people]
3 t4 z. Z4 p  c6 E[
& m0 ]. l+ e( A) \5 f( I- f! ulet j 0
. W9 Y/ H4 m0 Mlet note 0/ F! n7 s" M5 G* j4 ~9 g  m
let k 0
- R! ?0 ~' Z, e! |" ?! I- @;;
计作出过评价的邻居节点的数目; k1 N7 I& N6 ]
while[j < people]
7 B  r; c( M) ?" v+ E[2 }5 f+ C8 B' A6 M
if (item j( [credibility] of turtle (i + 1)) != -1)
6 Y: z$ L* s* d$ e& O;;
判断是否给本turtle的评价质量做出过评价的节点7 ^* _; U" H( X
[set note (note + item j ([credibility]of turtle (i + 1)))
3 z2 p: l. F. E;;*(exp (-(people - 2)))/(people - 2))]

7 m4 q" ^+ y: a: i$ j- @5 zset k (k + 1). P3 O6 r7 J+ b
]
5 w! ?0 a5 A+ Q' I0 ^8 cset j (j + 1)8 d; `7 O' X. A: }3 x. M
]2 E' C- b+ O9 G9 V- P
set note (note *(exp (- (1 / k)))/ k)2 I$ l8 t7 J% w- J! Z5 D# M+ w
set credibility-list (replace-item i credibility-list note)2 _) n, F* d% y, `' U& ~
set i (i + 1)4 {* c% ]- f: Y1 u- W  j3 Q: `' p
]
  N+ [1 P8 J$ o0 a' O; fend; X4 }3 m: Q! |, P3 D& w6 L6 c3 K

; {8 Y0 G+ D* _2 ?( f2 Bto update-global-reputation-list
, i& y# a6 n- glet j 09 r  x8 j- {* ~' ^( V5 \
while[j < people]4 V7 O$ I4 w0 A" A
[, A# [  i$ b: G5 `/ O, j
let new 0( \) S4 a/ H& l" D# ?/ R$ s% x
;;
暂存新的一个全局声誉) \! g+ N& ^5 O: z5 P
let i 01 ?3 T  I& d& J: b* X! j
let sum-money 0
& n8 D/ G6 H0 N9 X5 Blet credibility-money 06 X, G/ s! O* u/ x3 F# }
while [i < people]7 |" e) X6 p$ R
[$ x) l6 b! y9 G! I/ G6 C6 |- h
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 W( M! _0 _' T" P( q' C" ^( Kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- ~: _3 b7 f3 y% F3 E+ \
set i (i + 1), Y/ l! p0 j7 N& G( @
]/ M! X! U1 D/ r' f
let k 0
+ \! ?- J/ ], o& `let new1 01 p  E( ~0 F  M2 o" l! k
while [k < people]
; Y5 J% }. Z/ Q1 Q7 t5 Q% P8 ?! r[* v* G  i' k4 @! D
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
% h3 E1 r( s0 H. M" x3 H4 zset k (k + 1)
4 M& \6 s% ]4 Y$ p$ p]( g( o  X/ O2 J! ]: F
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 _3 K( G2 m; _8 k1 t  a9 Uset global-reputation-list (replace-item j global-reputation-list new)
4 t3 y, c2 b9 Z% ]+ k% }set j (j + 1)
8 k" Q8 a( U5 X) W: G]
' g( F$ ~8 N5 b' D; [end
* N/ v' g' R+ M2 t, v! ?- O  y: Q, h' c8 T$ ]0 K# ]( s
6 y0 x9 z# o) b3 l! {

: ]8 K9 Z7 ?8 K$ n8 P. r2 g. jto get-color
& Z$ p6 b% R2 c7 m- e9 J
  m% Y* m' S+ Y0 v: ]$ Mset color blue

/ _" k, c: Z  N/ k9 i! wend1 K: n" W. G6 Q8 X9 m

0 b- F; X1 d8 X" _, ^to poll-class
( C! Y# t" q7 a6 oend) R3 ^& J' {! r6 I' }
0 w+ ?8 c4 V0 L1 e0 O& x: b8 `
to setup-plot1% Z6 y) l# X# _, B

: S1 ]) v! i- u2 R& w% Aset-current-plot "Trends-of-Local-reputation"

2 N, D, {2 u( O% I9 I# T! |
9 {4 d" y1 y2 mset-plot-x-range 0 xmax

9 \4 g% j1 |/ m) }3 N' O1 R# u
, L4 |: b* U& W+ M; g  Y& gset-plot-y-range 0.0 ymax

8 y3 H8 S9 H' g3 a! l8 ~end6 {: G- q9 j( M! Y* ^; z
$ e; @4 |6 U# C7 @7 {* \
to setup-plot2. m% ?( I) R' C. V

, D/ |! C9 E& q% w6 C8 b5 x7 `set-current-plot "Trends-of-global-reputation"
" u+ y& q# \6 L7 B

/ K: }9 P! n: s7 L3 g' n. Lset-plot-x-range 0 xmax

5 R8 Q+ U" w: }% B
' t. M! q) x9 |, Aset-plot-y-range 0.0 ymax
- A. T+ @+ b: `6 E9 K+ g& z! L
end
% Z0 m& C- d7 a+ h7 e0 ^7 L
0 b  r  ^2 b! ]6 w) Pto setup-plot3; F' ^& p: r! T- E' q2 j
5 ?% ^# f5 N6 N  `" {3 [2 c
set-current-plot "Trends-of-credibility"
1 W+ [' ?( a) \# \6 z# r+ G1 w

/ c, O% [- a) q. Q# Eset-plot-x-range 0 xmax
1 c: t* p  f1 p! N- K* f/ }+ I% l/ M
: d" b# [: q4 G+ K
set-plot-y-range 0.0 ymax
* ]* f4 g5 t$ B
end
; s- K, c& p: ^& Z3 ]
4 \+ d* P+ f7 \to do-plots
1 H# n! p# s+ n% h* M$ ^5 C1 bset-current-plot "Trends-of-Local-reputation"
4 D6 |# p3 K, E' H0 l% pset-current-plot-pen "Honest service"
% U) w. D5 Q$ j8 e5 Y; u1 Nend. s. X3 K: _; n
! n* ?5 L7 t' g
[ 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.
% D9 M) H( W5 `/ y5 }2 I! Z7 |% C, j- q! B  S, A
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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