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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:
6 L! a3 H) O, I/ ]to do-business
: R2 I5 C/ K0 I* k1 q) i% t rt random 360
% b7 u& D6 k+ L fd 10 G: ]/ \0 ~2 |4 \- e( y/ K/ s- g. B
ifelse(other turtles-here != nobody)[
& q+ k& u" d. N6 V$ @) [   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.
! Y; A% d" ~; n" Q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% k+ K+ L! n2 }/ |, e4 ~   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 K" b$ r) O' b/ x   set [trade-record-one-len] of self length [trade-record-one] of self
, L( Y- o" h- s  V4 o' `2 K   set trade-record-current( list (timer) (random money-upper-limit))
& ~6 V2 i7 k# C. ~4 f3 P6 @/ z; Y+ m6 a4 y9 v  u
问题的提示如下:. b# a! M" S* a( I# D9 u! ^
1 R; Y5 v7 T0 x# X. e0 T5 E8 @
error while turtle 50 running OF in procedure DO-BUSINESS
. F) A- S" V: K% I5 f, `  called by procedure GO
+ {9 k- h% v! B  eOF expected input to be a turtle agentset or turtle but got NOBODY instead.
! n( J* S7 M' ]" s" M: b$ h* U. x
(halted running of go)
2 U" U. B; b0 {  H4 _0 E1 g3 O
- N9 W& b( l3 C( m; J2 b: G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~~
+ N  l, x2 p+ A另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
$ g% c/ t) p# r' y% gglobals[
/ B, n6 }2 p: Wxmax! b8 T  E% j' S" y
ymax
& Z1 F; f$ X) Qglobal-reputation-list
8 f6 R) a* m; N$ j4 \! C
5 j: H# m2 ~7 a) ?8 r. R: [;;
每一个turtle的全局声誉都存在此LIST
! T3 [' L  o, E2 A. c6 R$ x, y: \credibility-list
. B9 q$ `' y' ?;;
每一个turtle的评价可信度  y# N7 V0 o( e( N
honest-service  S3 t  `, Q6 ~! H
unhonest-service/ x" n* Z( L* L  K  ?& c
oscillation: b) l$ B6 ]* X9 Z; G  w* {8 S* u+ R
rand-dynamic8 y, h- ]. o3 L# z- g. r' v
]
2 C, Z7 x' a- Y* j6 W4 d( Z. n1 z/ O. l1 z9 }  b
turtles-own[* |% P4 \! _# i+ ?% z$ u" T$ U% D, J
trade-record-all
* B- T0 B; e7 _5 c, ?# F;;a list of lists,
trade-record-one组成  G0 z# O! s: o7 G
trade-record-one
4 h  x) H$ r7 ~, D) o;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ B5 o- e  W# \! o' H
( p/ ?+ O6 @" u; Q% H3 o# r4 S
;;[
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]]
  L* p6 t, R: v7 R0 vtrade-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]
8 J* p0 C/ C3 K  {0 q, s5 rcredibility-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
5 X, k6 _& V/ Y3 Dneighbor-total' s: [. G8 a( C1 }7 m
;;
记录该turtle的邻居节点的数目
  A- O" j) A. w1 Ntrade-time" U6 C, \6 S9 z  w. C
;;
当前发生交易的turtle的交易时间' ~3 a2 [2 f; M0 A
appraise-give
' k& z5 ]1 P, {; n; y! v;;
当前发生交易时给出的评价
. J( Y" h( i/ M/ D3 |4 X9 iappraise-receive! ]# L* g+ G0 y1 I& u% c9 g
;;
当前发生交易时收到的评价
7 R- ]" f4 ?( dappraise-time
' x1 e) W/ _9 k;;
当前发生交易时的评价时间% I% O8 H" o6 Z% k5 v- ]
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( o% o- K: t! X7 m( a: I4 Ctrade-times-total+ Q8 x. |) f! O2 {
;;
与当前turtle的交易总次数
' R& z9 G7 B8 \" M' w0 C$ y* Ctrade-money-total
/ [; Y/ S/ j3 l; k# ]* g/ O- X;;
与当前turtle的交易总金额
; Q$ h9 W& [: J1 e0 L# Klocal-reputation6 J5 R& Q$ b/ y3 p7 ^5 n; I5 r
global-reputation4 a0 b  @/ c! _; I2 L3 T* c! B3 G1 Z
credibility
$ ?7 e0 X3 F2 @- r' j: V6 x5 |; O;;
评价可信度,每次交易后都需要更新
; H+ b+ G. o/ W: b5 A1 pcredibility-all- U& Q+ _2 @, w
;;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* L9 a3 K! B8 e4 m
% t# J9 z2 ~/ ]- `
;;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
9 @# p3 J* l4 O- x/ T3 v; O" [credibility-one
: A: G# y* ^6 |1 q3 U1 ^;;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
, a; H9 @7 ?" S; m9 n- f5 aglobal-proportion
# C8 ]3 ^' M+ pcustomer' O1 h" t3 j: |9 t9 U3 }" f
customer-no) W0 m3 {" R! K1 h
trust-ok- I' Z" z% h; }
trade-record-one-len;;trade-record-one的长度3 f/ ~3 g3 d7 ?
]
; _0 k" f7 W3 P# M; i
7 @! F3 j0 q" s) y3 m6 p4 a;;setup procedure; C/ k- J& Y+ b, [" D; V

- e& U/ f! u* f. Kto setup
1 G9 d( f% q3 w# p- P1 e+ X' T+ |* [4 B4 L9 u; V6 p" B
ca

) R* t( |' {& \+ C( C3 G: n2 V9 _6 G+ z, n8 R7 x
initialize-settings
) A% \% X7 U& o7 \6 C6 E/ X8 }. L: _
! e+ h# b3 g8 t' l6 v) Z
crt people [setup-turtles]
% Q" h; {# T. j/ z, ?- |$ L4 s

4 {$ F0 L6 k$ a5 i$ c0 Yreset-timer

+ }& e# f3 z" X# @. I# ^0 T% d) k" G8 N9 I5 M
poll-class

# h. S) @9 D0 B: @
! T  t0 Y; [( j* B6 @: hsetup-plots
" y3 B- a4 c0 ?) k5 N# \! {7 @: `

) P/ _; w  I1 d& O* N/ x9 A7 \do-plots

/ ~  c" Z* ^! U/ nend3 Y/ O9 {% Y+ f0 j4 p) Q! G+ m- C

, o, x5 m' A1 U* U: x/ }/ nto initialize-settings; ^( `' n: K5 X7 i

( A0 E% i9 ?; k$ ?# lset global-reputation-list []
' S! O. ^# v5 t2 C  o* ]( C

2 B4 G* _4 s8 Y" Oset credibility-list n-values people [0.5]
6 w0 ?5 I9 i- \$ Q- H/ v$ F

% K) Z0 m. j5 j# S; c3 T2 T' wset honest-service 0

2 H0 r- h! `" X/ H# r1 n$ R* X) w$ A; I' ~6 w0 S- l
set unhonest-service 0

0 i8 ]: }% H9 Q8 c& f; o8 @3 I1 V- n( p0 q
set oscillation 0
8 V: o6 H( R. I& C" W" ~/ Z/ A
$ }: K  G* J) s! i/ B  E
set rand-dynamic 0

2 {8 b+ d/ x, Eend
2 C' ^5 h% s. p( u/ W0 S2 c" l' D, ~( b
to setup-turtles
( {# N+ ~. C* f& ^  s- g" ]  Tset shape "person"& u" a0 A6 F# |' Z0 E
setxy random-xcor random-ycor
' B) o7 k7 P5 [+ C  Vset trade-record-one []
  A5 n( _! U1 n( L% j; m" V
/ t/ e* e1 O$ B3 d8 x
set trade-record-all n-values people [(list (? + 1) 0 0)] 4 P. V) h! i/ [7 E7 z3 z7 s

0 u" i7 W1 t  p8 f5 [+ vset trade-record-current []
- ]7 i6 p; q! kset credibility-receive []* D5 u8 P$ P' D- r
set local-reputation 0.54 c5 D: \. |0 A
set neighbor-total 0
0 w. j& T, [4 X' b4 W& h* Eset trade-times-total 09 O/ `- |5 ]% V+ P3 ?9 G) e; e, z% V
set trade-money-total 0
5 x# g& `  O/ f/ ]set customer nobody
+ F( G4 [; o: y7 J8 Vset credibility-all n-values people [creat-credibility]
. `* @% \9 Q& H, V+ x0 nset credibility n-values people [-1]4 z  U; _3 I- n4 v! S6 C1 q6 Q
get-color
% C$ q  b: d4 w  U6 T1 S+ p

- c6 _; m2 E7 k0 `end* W+ @( h* X8 @8 o/ g! @" Z
# ]) P5 u4 F+ p, @
to-report creat-credibility
: f( w) l6 i, F. Ureport n-values people [0.5]
: ^' r3 J* s4 P2 ?; \3 q# g0 u- cend
( u8 j' w3 P( j8 d+ R/ w& R
* b, T. e& s: k3 dto setup-plots+ l/ N6 n! h9 D, M: [1 g/ `

& ^' J% V; f, b' }set xmax 30

: D) q' G% p! M$ `0 e0 P8 W+ f/ [) [6 G0 U
set ymax 1.0

* ?% |0 W$ K1 A! S! R0 ]* ^0 }- h( q& H+ q
clear-all-plots

3 n9 v: I/ M) v1 M
6 }6 l% `& e! E+ Jsetup-plot1

  |; @) J/ y9 }9 Q0 E$ \
, G. u8 U% \' H# jsetup-plot2

. m  e/ t3 I: s3 B/ k; d+ ]- F" f! D
/ e5 q5 Z% U, A  t/ r  Asetup-plot3
* n6 j2 k) N1 D7 ~. m" k" @. I3 U
end
, N( O+ T5 c2 T& e" m$ \
  j, a  Q4 p. o3 O, W4 X- O, p;;run time procedures
$ g* ?1 x5 C5 b4 `
" I- }) B5 p, I7 Uto go% V$ J: D) G; ^! J5 E6 {

' W( h9 q( {* _* |1 k5 N+ l% bask turtles [do-business]
5 P6 W: R0 U4 x+ o/ ]
end
5 B1 r1 x0 ^, T" b2 p) W( H8 z5 W
5 [; u( |' ]8 y0 X8 Yto do-business 4 D! X7 v# l. t

. V; z/ E7 _: s% F3 W0 ^. h, A  s
- M6 O* i7 \! J" }6 e: i: xrt random 360

% A7 E, m3 v5 _; E: s0 c
4 y9 `0 M9 ?) s# }fd 1

6 d! R+ ]4 ?6 |/ U/ |
2 \) I6 d/ H8 n0 {' b8 Vifelse(other turtles-here != nobody)[
2 z9 y; U' v- S. g" K* a, \# _1 y
5 f! f, h  k1 p" [/ T
set customer one-of other turtles-here
- M: G! D. m3 t' ]7 F' R6 U3 u

6 ~5 Y  _% ?9 G2 D;; set [customer] of customer myself

' Y; Z  Y; ~. Z' P; X% d" u  G& T1 k" k, u( g' B( E8 K4 V2 l
set [trade-record-one] of self item (([who] of customer) - 1)
) a: |$ f" W$ c2 ?. H, b+ v5 E) }[trade-record-all]of self
$ U  w8 n8 ~- Y1 Z7 o+ P8 B; D;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! J. {2 P8 H# W3 S' o
: Y4 J: N7 @, \& W
set [trade-record-one] of customer item (([who] of self) - 1)* y5 L. y" Y% v; n0 K
[trade-record-all]of customer

# v" D6 x" W* q4 z/ m" g4 S8 b+ Q
! ?# G. e" D3 a- ^set [trade-record-one-len] of self length [trade-record-one] of self
" u7 [# n1 M7 q: h

4 e3 c. C$ r% x+ v. W8 Fset trade-record-current( list (timer) (random money-upper-limit))
1 X# {5 Y. N# T9 z) F& |0 G

( r+ I" G2 M8 a" p" Y3 ]ask self [do-trust]& v- Y9 p8 f$ ^1 N/ j, M8 I
;;
先求ij的信任度
, q* J8 C) b' J2 I) ^8 g! N# J# Z# h, L4 N1 c
if ([trust-ok] of self)5 |. ^/ S* \; x
;;
根据ij的信任度来决定是否与j进行交易[8 t& x3 _0 b( T, Q( k. a" m  \
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 b. Y3 ]- o3 W6 I0 G6 O! j( h" S7 e' l$ N2 w+ P5 K9 _6 S2 M
[
5 j2 k, ]. `1 s! ]& }6 ~% r/ C

# w' N- m( m/ h: t7 _do-trade
. C, U( \9 D# {
) B- J% b" F3 N
update-credibility-ijl
' F! d" ~. e" G& ]" \' Y& a
) F+ z+ o/ Q  }
update-credibility-list4 L8 ~! C2 n8 r, A4 j. F

1 K# y  o* l8 R' @, F. s
# j( `) x  G1 R% `/ v! s& cupdate-global-reputation-list
, P3 [4 f9 A; a/ ~4 Q( C

' w( @# U7 Z: Fpoll-class

! ?( ?3 c1 Q0 r! y
0 M/ k2 K7 [4 J/ ]8 Z- ?0 b# qget-color
3 _( |' v/ l& o% r7 F+ x/ E

1 q4 p' A) r; Z7 r, S- W" ]]]2 D9 R, ^- ~9 q; f; x% w9 O
$ ]% B: a3 J$ P3 |; P+ f% ?
;;
如果所得的信任度满足条件,则进行交易1 J+ Z# w" ?" G: I' v

# Q! ^1 b2 q! ], r[
3 B5 n! Q9 M* k) l0 d( F0 ~9 C

8 b5 u6 J+ B7 O- Z8 G3 ^rt random 360

' z. k9 q- ?, Q/ V. J+ {/ d" B
! Q7 T) T: }; K) E' `fd 1
0 y: @4 n8 h4 Q; ~2 z

1 O% o; Z0 Y" u, v& f: u, c" ~]
# u' A8 S5 ]0 k. g% Q
" K* K8 J4 t$ ~
end

! h+ |  ?6 N/ z6 X! @( [% L& i, U( [! Q* ^! d
to do-trust & Y/ d, D1 |7 Q2 ~' {4 T' t. T
set trust-ok False
9 {3 m" K& X& M5 q, e" u
/ x1 d/ q. \4 c8 D& G  j$ s
+ x0 n. {% e8 P7 m4 |) q. e
let max-trade-times 0
$ r% Q  W! a- t% c: wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 Z9 n3 S1 r$ t6 c# dlet max-trade-money 0
' {  r5 b% V" i+ d6 hforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 a0 Z3 G: k3 |" ]) O1 Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 k* e5 j( V. ?7 A* [/ w# P& }* W, p( v/ O5 {, v& C' r. y4 K
2 s" X! j  A" ^3 w& a
get-global-proportion
  ?7 \5 \7 l1 x8 x/ H$ vlet trust-value
1 q. M* {' {2 N& Flocal-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 @; R6 k$ g' t5 aif(trust-value > trade-trust-value)+ h7 q) Z) D- M" Q2 F/ h8 q
[set trust-ok true]  ]9 G' d8 X6 E, K/ x
end5 v  S* j* }$ K% B( e- z* y

- A* c# m5 W$ L1 d* dto get-global-proportion
8 w8 k1 J* Q0 q8 z2 R% y' Iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 o/ ]' w/ i; L; E' z[set global-proportion 0]
7 c! T! _+ N  y[let i 0/ r8 [& W( T9 I. X3 {1 w
let sum-money 0
5 x" C' P+ A3 S- f  t$ u- ~while[ i < people]" K, S' }& k% M4 M1 q7 a$ X
[
% I8 n$ s( o0 G# U+ ?if( length (item i
! T+ z1 u) K4 q6 n! s3 x) g[trade-record-all] of customer) > 3 )

' {- _% P: R1 w. P/ o6 p" s3 |[3 u( `* B8 e) v  r: \: C2 z  z" D
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" `; G) _% F! i1 X0 S
]% Y. A. l. |0 p5 x3 n9 ]
]
$ N+ o1 m5 i" U  B2 Q+ @let j 0
- D4 n% }: D% Y$ {; slet note 05 ^4 q/ {  @; m; E) N6 T. ?+ R
while[ j < people]
: f2 d" o/ V, M; ?[( K- x* y! p' q' S
if( length (item i
3 S  C, l6 j/ }) t3 \[trade-record-all] of customer) > 3 )
& ]" z7 [$ l5 _% @
[! Z  X1 t1 ^; s, l+ d
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 l, [. f; @: U$ {[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 ^# w' W) U7 ~8 e2 c" u" @[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% x' y+ b# \1 r0 Y, r
]; m* j- {0 ~4 Y7 t. ]
]
$ R. w) J* k& eset global-proportion note, z# U% x9 S6 R. C
]
$ e5 W% Y  f% ~. C  d2 Gend) i/ O, t8 n3 t! {9 G, B" P3 J
* W3 b- |& n: L5 [+ P% e
to do-trade$ [3 s( X+ a+ S* A2 [' f/ h; Q( R
;;
这个过程实际上是给双方作出评价的过程4 ~; z. e+ `) i* S& w) a# l8 R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 _" _3 t. g+ Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 o8 s7 z2 ^$ D- L. Rset trade-record-current lput(timer) trade-record-current
8 |& E6 _7 n. {" G/ p;;
评价时间( Z6 X( O& `: u) `9 j  S
ask myself [( V5 V0 C9 u, _& }; m1 L4 z& S
update-local-reputation/ p9 {/ x1 s8 l" u2 S& F5 @% F
set trade-record-current lput([local-reputation] of myself) trade-record-current6 d) H+ B* u6 C+ A/ o
]
) g' M, r8 S0 sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 J  `1 G/ D: _2 Z
;;
将此次交易的记录加入到trade-record-one. i: J. U2 d3 ?' u8 W; G6 i. x
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 z" t4 O5 C  mlet note (item 2 trade-record-current )' H2 j# H: e0 |6 @8 l1 e6 |
set trade-record-current1 u# m8 I5 M( D/ K  h
(replace-item 2 trade-record-current (item 3 trade-record-current))
& `" E& l7 o" n7 g. }; O
set trade-record-current/ r+ K) W9 m% N! s+ v1 L, b/ X
(replace-item 3 trade-record-current note)
$ D' d5 H* g9 ~5 D4 ?8 k/ @7 z, b6 ]% f+ g

. E& |  D4 }! [- @ask customer [0 {. x. H% p2 O6 D
update-local-reputation
) o. S) ~; X  jset trade-record-current4 Y! v3 q! p$ m& M5 ]
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 d8 _  O# D0 o: `1 [
]( k' x5 M% `. j; K

8 U5 D3 [5 A* `  F* g; g( I, w

  a2 ]; |0 K5 Q. e5 C- a3 _set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 j  @9 P3 j* o5 Z- E! u/ E) F

7 x% }  d2 U* O* G9 Pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  @& l5 b/ T% U/ L2 u% T+ s;;
将此次交易的记录加入到customertrade-record-all1 E9 ]  e, `# w$ r6 ]
end
5 W& y5 @8 @# |" I
( p, h, s7 a! x2 R2 wto update-local-reputation
; z+ X) x. M" e7 vset [trade-record-one-len] of myself length [trade-record-one] of myself
" q( n/ v% C9 ?0 [: A
! j/ e  Z, u. l1 \& \3 p# d2 s9 B, E9 H! H" W
;;if [trade-record-one-len] of myself > 3
3 i6 k, x# N) x
update-neighbor-total+ j, }) w2 n  v7 C) r
;;
更新邻居节点的数目,在此进行
5 A+ h8 Z' e: `4 s9 [; L: Nlet i 31 L: l# P! P( |# G' ~. e
let sum-time 0
# n& w. R( Y  [2 |' iwhile[i < [trade-record-one-len] of myself]. Q: i  z7 d6 ?) o7 O& Q
[
& m: F& r" s( m4 Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' m$ }$ @( N2 uset i
* |4 I" ]9 t: y, L" Y7 v+ T' q3 x( i + 1)

7 e5 b* b3 f& U8 @5 N5 ^]
6 V6 C/ O. o' Z2 glet j 3
; K0 M- a/ N1 a/ W5 }1 Q( Llet sum-money 0& b! j. D  K4 D* B7 a
while[j < [trade-record-one-len] of myself]
8 n' u5 g- f$ V4 t7 q[# Z1 P0 c3 s- t5 J
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)& x& Y. x" T; U1 u$ k7 E0 Q
set j
4 V: a2 a  I  v& d3 c7 p/ e( j + 1)
$ @/ P# s$ s) U3 J
]
7 ~! ^4 @1 m8 h: G( tlet k 3/ w' T/ e  [) A% T+ Q$ G: ~
let power 0
1 N( M& o5 s% G4 y, w2 o/ Blet local 0
8 S/ L$ G! `$ [" t: ^0 ^# ]) Dwhile [k <[trade-record-one-len] of myself]) B$ c- a2 O  M0 Y  q8 B9 P; U" ^9 B
[, r; v9 X$ L* @6 C  Q
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)
. p9 P% P/ ?2 [5 y3 e8 u* y! aset k (k + 1): `, N$ I8 f" W
]
( ]; `2 e0 \) yset [local-reputation] of myself (local)+ \3 _% y) Y! X: n% u! {) ]6 U/ d
end
5 E/ N5 l; A$ b8 J4 q9 e  d" w  u8 t
) R- _& `3 R" c- d3 H: yto update-neighbor-total
: N, }; A0 W) q2 |! L. X5 l
5 M/ C6 _2 f% c; y# {6 Qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ @% i) k. I, |( I! L7 l  h

4 ^1 N$ Q* z6 P. w
( O% U8 F  G% p2 g* K
end3 {7 v( j$ i9 ?" x
. P2 H& H7 D6 W0 b
to update-credibility-ijl
9 h, g4 F- S; E! \5 }- x8 P
7 P& X! ^% \- A1 v;;
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。1 D; D6 M+ S8 A4 q2 \0 x  [
let l 0
* c1 N2 F$ F3 u3 \5 Xwhile[ l < people ]
  R' q/ P! p- s+ m+ d$ |;;
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' ]% _9 w: m# f. W4 ^5 m
[) q3 O; U, U9 y# e
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 e/ w  c  y) h
if (trade-record-one-j-l-len > 3)6 D8 k" l. i1 P2 E
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
' G( X9 @' z+ C  \* w9 u# slet i 3( a* L( u+ s/ I2 C+ X3 x$ h
let sum-time 0: `' F% ^- E9 I4 n0 p; _- w
while[i < trade-record-one-len]: m6 Y# C3 k. e  a
[! f6 V0 @, p7 j6 g. d4 Q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; c1 H; Z. T4 J" ~. w9 Bset i
( F2 f/ f( S2 y7 x+ I( i + 1)
+ S  w% w1 p( I. a4 |4 `
]* ^) D6 U/ [4 ^" S
let credibility-i-j-l 0
  X# m" Y! @& d% d. u' m* ^; [;;i
评价(jjl的评价)( D8 `" e8 M! Z5 s- H1 S- d' Q; r
let j 34 T/ L; @% Y: m2 @6 J+ M* j( T) _
let k 4
* p& y; G- {; K  iwhile[j < trade-record-one-len]
2 I# Q8 ?1 u* j- _. n5 S$ n[0 D" q' e8 T: A) h
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$ ^7 R" z8 X/ e' q) E7 _
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)
; f# S7 b; Y6 J" Kset j
0 Y& j' O* u( ^4 x( j + 1)

9 w0 Z& S  d1 S( T2 O- B9 j  J]
9 h5 @( R0 k& T( {: ]& ?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 ))
! Y0 F9 R) _/ {- c5 a
- j" @4 l6 r* p' x; J& m

5 _! {: t: I% {* V) d* Elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  I$ E/ L  O* g% K% _+ e: ];;
及时更新il的评价质量的评价' B; W( V1 g  G. d# D$ h
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- \4 U, h2 [! P1 U; q: i1 d
set l (l + 1)
/ {! t- K4 [" k+ X+ h6 n8 g]
4 n/ O' F* g( i. ^5 Vend& B* @3 m5 u$ f
  ~/ j  B6 ]6 `
to update-credibility-list
' I# B9 Y& h+ r) k! ^let i 0
- `  q$ V" }! ~  F0 gwhile[i < people]9 K! Y7 K1 n& W6 k. D
[1 b1 K  }4 b" A- Z% m' P. c  F
let j 07 y$ v' A; Q5 v. k2 {5 @% ^( X
let note 01 S) O/ J* [# Y# M! C
let k 0
, Q* Z" N8 B; z$ {" E0 C' c;;
计作出过评价的邻居节点的数目! ?! W+ q9 q5 F' L5 Z$ [0 g  J; m
while[j < people]4 N6 D7 K5 z8 m8 k1 y7 ]; v& o/ t
[
  p: I: B0 s4 e/ Pif (item j( [credibility] of turtle (i + 1)) != -1)0 j6 t' T+ ]- U5 D- V
;;
判断是否给本turtle的评价质量做出过评价的节点
$ S; J( g6 T& k. H- x: e[set note (note + item j ([credibility]of turtle (i + 1)))& y  c7 j3 [2 A; O) C- j+ e6 P
;;*(exp (-(people - 2)))/(people - 2))]
) b$ ?4 V- b- D( M, }
set k (k + 1)
8 v+ E5 B1 t, Z- H]! u* X2 h+ T0 N3 R1 R
set j (j + 1)0 @* r- X! W) S$ j
]
" G8 Z) O; u( Yset note (note *(exp (- (1 / k)))/ k)# W- r& j9 m; ^5 l1 Q  E8 }8 h3 \
set credibility-list (replace-item i credibility-list note)$ A2 B- t  O) h0 K
set i (i + 1)# b& ]7 K. |; m/ j4 D
]
9 W/ |  I( L7 y5 Z" Z$ `end
0 H" l- i5 s( I& \% t3 t" @- T' [* |& _- x
to update-global-reputation-list
" [1 {1 Q& U( z$ |let j 0
, a/ w, H  ~- S4 p) T4 c8 f, vwhile[j < people]
+ C& b% A3 J) J) g: @4 @: L[* [9 Q- Q( C5 `
let new 0, {8 ?$ ~+ y* x' V/ Y- \4 r
;;
暂存新的一个全局声誉: f, C4 Z) V" m8 S. T
let i 0' f0 u3 r1 J- I! z- m8 \' M8 d% L7 D
let sum-money 00 F" t$ g& P5 h8 b- Q
let credibility-money 0# a( k. e/ A4 \2 T  t3 ^
while [i < people]! |! ?! h$ _, ?: D, {, F0 @
[
  m" r! r) J; W* Lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 w. q, H/ j/ ^; Gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& d6 f& ~- v+ w6 e* s( Iset i (i + 1)
3 q6 S( l) |7 H" H( z* b]' A% X0 d- ?6 M/ i8 o9 s$ h
let k 0+ }2 r0 c; X7 R2 n% \
let new1 07 I) b6 q& p- q" y
while [k < people]
4 Y; i$ P* d& m! K. ]" b[
3 F6 t( B2 ~( U1 s4 c* ^  |! ^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)
2 f8 @) i6 I* S" b6 |& S: a1 L; fset k (k + 1)
4 x" ]8 B" l& Q& `$ e0 {" d# N( J]" l, J* `2 O/ k& s$ O0 x9 E. b( I
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' a  P) ?! _7 L, A9 w- d; u: D) }
set global-reputation-list (replace-item j global-reputation-list new)  m4 h5 i2 u  R" F
set j (j + 1)
/ ~7 b$ K- s' [3 }]3 M/ N9 H; Q' [9 D0 I8 H0 }
end
: l. `& D) ?1 u- y6 X- Q6 i4 {0 M8 q) I* |' @: S8 O
- v2 R% \; f+ U
  h* P+ |8 n5 D  b2 F" n
to get-color3 _9 r: j5 ^* L4 Q

6 _% \( o% P5 a! D* C7 xset color blue

4 O( r6 V" k) Z, C- Iend
/ M5 I: m( j5 ?- m
, }& C& a$ m, S/ h0 Hto poll-class
- t" l2 _7 @+ Q0 F; eend4 _4 }; d' `! h9 B5 k" z% [8 \

+ s- K4 @- z# L  S1 Y* Gto setup-plot1* h* P2 A/ a" g: w

5 y% p% L2 U+ K% G  ?" o; Hset-current-plot "Trends-of-Local-reputation"

7 C: M* s4 x. S/ r3 ^7 p# F. _* V$ z( f9 z4 \
set-plot-x-range 0 xmax
9 W* a" ^9 q1 O2 D9 |0 t
' h2 W; w2 S$ \" B. m6 y7 z
set-plot-y-range 0.0 ymax
& R" m. L$ Y# r+ C5 _5 I! X
end" \9 x' ~) g( y& L0 `; X7 F7 D# O5 u
, |6 M! l  k' s( n
to setup-plot23 A/ h2 g# B& j: ]. N4 [

- S- x" z/ k/ Q; V6 f( Nset-current-plot "Trends-of-global-reputation"
# _& P) _- T4 A8 T) C

  T4 b+ T, Q4 {- S  gset-plot-x-range 0 xmax

. Y% J; K2 |4 X6 o+ z$ W
/ f8 F9 G: ~! ^& z* Hset-plot-y-range 0.0 ymax
) x% s4 P) X3 O# J0 s
end
. A' U3 L2 b# g  H3 Y/ H: M, _  O
9 q0 v; H- m- D4 w4 P" S5 Z' `to setup-plot3
2 h+ ~- z3 i7 Y
$ J( v. n- i3 l3 x" t1 _& L/ fset-current-plot "Trends-of-credibility"
1 t" Q3 C" Q( p7 z4 _

9 L* k! _% d' Iset-plot-x-range 0 xmax
" T  B, R( n7 Y/ J3 s' |
# D) M0 x; f% @
set-plot-y-range 0.0 ymax
& K; }8 C5 j1 e& M; @) u) d
end
% h5 D! C$ c5 x/ k, p# i. o# l3 `) `( q$ G4 z
to do-plots
. D, w- B! z; a+ Vset-current-plot "Trends-of-Local-reputation"
3 C# @3 V' }  m/ Y) x5 I/ Uset-current-plot-pen "Honest service": P, a- j& s, E- {
end& x$ `! Z/ ^- T3 z2 v/ l" g; `

" u/ ?# |) Q" L8 O  K5 T[ 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.4 v& l$ X9 k1 h

! u8 A4 h) B* ]- E- ~9 S* s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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