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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:  p* @4 |% |/ Z! H% {0 }
to do-business
( |. q# D3 _: ] rt random 360) _* v3 Z' c1 `* A4 W
fd 1
2 @" S$ _4 z- D3 ^ ifelse(other turtles-here != nobody)[  ~; W9 Y( ^& g0 F/ k
   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.& z. `& E8 f0 F5 S: ?/ T/ z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 R9 X# g0 _) p) u# ^: P   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) a' L0 D- ?: Z; I$ Q, L7 s   set [trade-record-one-len] of self length [trade-record-one] of self& L7 x! S+ d+ V$ E; s, w0 u
   set trade-record-current( list (timer) (random money-upper-limit))
8 j* ?, e; X# F/ b4 x8 z$ `$ i' [1 z0 X
问题的提示如下:9 s, ~% V& X* G% L% K

+ G2 O4 f7 ?* z9 M5 Q, Ierror while turtle 50 running OF in procedure DO-BUSINESS
# `9 [/ I* J1 z* e, O: o  called by procedure GO
" w  ~, L! k# @# O8 D! qOF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 o+ {+ A7 z- @8 R9 V: t
(halted running of go)  d( E: x( W7 |
3 P, j+ w0 l) U+ |
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~~
' b3 O6 W3 s& |% m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; h4 D* v6 h6 d3 A
globals[( \% y0 P) _4 q# t+ V  f
xmax
3 n" @9 g' I  U  Z) oymax
) H0 Z7 I  i1 f& A4 {, x, ]global-reputation-list3 b9 l2 k2 |( ^& Y
6 U' Q' [* }, @6 k2 g( y* D
;;
每一个turtle的全局声誉都存在此LIST5 n7 I9 c( L2 I: I3 O
credibility-list
- b# p! G0 y) B( W6 ~;;
每一个turtle的评价可信度4 U2 i1 ]( o% d# w2 S8 P! R% A1 D
honest-service( ?& n8 o- l, e
unhonest-service
# S1 X6 m9 T' ]/ f: _) eoscillation) u. u1 J( J3 u; _
rand-dynamic
  H' b* f5 r2 `7 u  x8 N$ Z8 G  E]
( d+ H& v/ Y3 Y
' i$ `* U  c+ Jturtles-own[* Q0 K" e7 ?; P3 L% z  J: Y
trade-record-all
3 _5 @/ U3 f/ ~: p;;a list of lists,
trade-record-one组成
8 f0 U2 n8 i/ @7 t3 l; ltrade-record-one0 @  b( j4 ~5 G5 W: U
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 t9 u( D1 ^( D* D5 }* v
9 P4 h* j: }% _; `- S5 Z  J;;[
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]]# R3 W. H) u' z  [6 B& o2 V9 H1 T" s
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
5 K' B' N' p  w9 q( jcredibility-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
4 y9 G$ l- z& _9 J6 i2 M: Oneighbor-total
9 d- C) f4 l8 v+ x8 a/ [;;
记录该turtle的邻居节点的数目  s$ a4 ]9 \8 i8 p. M, `
trade-time
3 O' T' p  t( q;;
当前发生交易的turtle的交易时间
/ g" L0 v1 e3 F8 Y( N# J# T9 {! ]appraise-give" L; C3 J, x, s0 G; d$ A9 P$ K
;;
当前发生交易时给出的评价; o( K7 Y, M: ?, x
appraise-receive
, L" ^$ K( M# \& [  ?/ Y% d;;
当前发生交易时收到的评价
8 V8 v% n. q9 yappraise-time9 L, s/ N6 o* y1 j' C
;;
当前发生交易时的评价时间
9 [& H+ E+ O' u& xlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
& L* w0 i; j- Strade-times-total
4 C$ c. o8 j" O( j- ^& ?( J;;
与当前turtle的交易总次数
. A7 R9 \1 O( l# ~9 atrade-money-total
# I; N8 h! u7 G8 U: I1 s/ };;
与当前turtle的交易总金额0 d1 l. K1 ^( |7 P
local-reputation4 T0 Z+ R" U6 U/ q
global-reputation
5 s1 R0 L: W8 t- E" }credibility
, }0 m/ _4 O! @* H( c: v;;
评价可信度,每次交易后都需要更新
, ]6 N/ j, g( y% hcredibility-all
5 H0 e) K! g9 L4 t/ f1 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& j( ^9 q" N" _3 k

! s/ u: ]: A* A2 P, Y" e! p" E1 U$ p;;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
7 k- W) f5 F. e; o7 }credibility-one- ]& D3 S9 \4 |4 ?
;;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
( T) _. E( [% k) u: c& ^global-proportion: Q& R7 U5 a6 h) |6 P& U
customer
3 F. }  U: a7 k1 C: tcustomer-no
+ [; Z" v1 F" D# |trust-ok
6 r& x0 j3 K  }trade-record-one-len;;trade-record-one的长度
, v# G' a- K' y: H" g. W]
% b% A- `* N# j' m- A% ^; @3 O! l# t( J, k  y+ c: ]* K
;;setup procedure1 [2 p" e" t" `) g# j; N/ i

2 P9 {+ v/ q* C; s5 L8 j$ Dto setup: K  x9 _- p/ [0 B

* K' J2 p) ~  F8 N3 Z' w8 E# c) Hca
  F+ P2 ]" y- e0 s9 Y
$ I; k' g" j! {( X4 j: y' W; T
initialize-settings

0 P6 |, K- r6 u0 e- j& z. e3 B" }# \) }1 x8 N# S4 ?
crt people [setup-turtles]
: X! c0 v# F; T' A  C4 y/ _

, L7 H( f4 C; s. S; zreset-timer

! H) h' f. D6 i& I2 v1 `
6 ~2 J' S4 f! qpoll-class
" m* k2 \7 t& n% c0 c

* t, d7 V# t  p& ?setup-plots

* W) C7 H: i, t% A5 V" B1 |
: B3 Z' Q7 K* C2 t2 [2 S  Bdo-plots

2 b4 \% C: l" x3 B  @+ _' I, wend
7 |2 o9 {+ X; [
2 G) S1 I8 t% B: ?, Eto initialize-settings8 [1 u8 X9 e. r7 ]# r( n0 }+ q
) c' W& S) }$ @# m$ Q' q
set global-reputation-list []

3 s4 q2 _0 x3 B7 i
4 u  T* t3 g5 S6 T9 A1 o8 c9 Jset credibility-list n-values people [0.5]
1 \" X! e) E! W

/ d$ y, H- S& y: R) Q6 {set honest-service 0
) D# ]7 H* A# _9 c2 i
9 t9 T. E& U" ]6 K; C  S
set unhonest-service 0
7 a0 U$ a. }, N3 q2 J% R7 y% Q( m$ W+ m

7 N2 j8 v6 A: Lset oscillation 0

9 \' s0 M( C8 m8 u/ H6 t$ L' ?0 D
3 ~& [6 {" R' |. H1 xset rand-dynamic 0
+ r# o8 N2 [. ^: i( a$ s$ O/ q
end
" ]% G: M& M/ n# @( J7 s/ Z7 k" s# t/ M- K; n0 }
to setup-turtles   p0 M, E' v! N6 n/ f  `
set shape "person"- P7 w/ A. B8 Q* w- R% G
setxy random-xcor random-ycor  R- v) G) z8 r
set trade-record-one []3 ]/ n8 p" [. Y5 \3 z! t

0 `4 |4 B* ?0 ~$ B/ S7 wset trade-record-all n-values people [(list (? + 1) 0 0)]
) B4 L. E: f; a& U9 _6 u+ h, j  e
, t/ f" w- {& V) ~
set trade-record-current []
3 f' f; T1 A) E4 Y7 e6 B* x1 Tset credibility-receive []* E0 M3 i0 i* m  ~
set local-reputation 0.5
8 N. I( S9 `/ l2 L, L7 cset neighbor-total 0' F/ j; \# B0 \* I* z
set trade-times-total 0
6 i  g/ `" c: b% Y0 R4 V. E' Xset trade-money-total 05 p  d' e0 y$ U. i) |
set customer nobody
( @1 j( e/ }/ V: [6 p2 Uset credibility-all n-values people [creat-credibility]: W( q2 f7 q: `6 _0 ^8 ^  e
set credibility n-values people [-1]
0 |# e* Y0 K' \4 Q* vget-color0 X, V4 p6 K! O% a. {  }
2 `* M% f0 m8 @; L( l; U% w7 y
end
  p% E1 _: F1 z7 y4 u
4 [! F2 D& ^# ?" f# ato-report creat-credibility
( C2 o  I0 g2 g: ^5 Creport n-values people [0.5]
4 ]0 G3 |+ ]. M. ~! Cend
8 U& w0 H% [7 q" r+ S" A
: o1 y+ Y9 e' D: S* R8 zto setup-plots
, |. q+ I" O7 @; f( S1 T- b
& d5 R( p7 w) X. f' `) ]set xmax 30

6 G+ w) _& L" B* g  g4 e
; q$ {& n9 j& V  @set ymax 1.0
6 n2 G  P  V8 L, ^9 C- ^1 }- o- t8 E

: ~$ d5 Q1 W( L6 N( T. ~clear-all-plots

) ^8 V/ Y* E7 ^" g* L8 g8 P2 D" |7 r1 X9 u
setup-plot1
* a% l* W9 _6 E# U& Q
/ D3 R1 A' a- x# e3 E  ^
setup-plot2
2 O" q4 J0 K  Y+ W. ~* r. e/ |
+ f  w% }. B/ h8 s' w
setup-plot3
% U) r( V0 b3 m" T9 P$ D+ e
end
$ X& f. ~& D4 {4 u
/ @4 \. x# A, f* `" T" J;;run time procedures
5 W5 w8 S( o! o. [( N# j; b$ ~9 f' x- W% I- P
to go
3 X. w( L" s( y4 f& ?( E  A/ S6 o1 K
ask turtles [do-business]
+ j* W; E5 T7 ^  ?6 V5 r- _; t+ f
end% w$ Q1 O9 }3 K0 q. }

" F) m8 Y7 ]( ~to do-business / K) O2 g$ [1 m. ~9 d& G
9 l" L: P- @( ]. k/ n* [
$ q6 j' W$ U) S2 T1 p4 A' ]! G
rt random 360

- q* D! P& P3 ~- p  h- v1 j- C( l' _$ X( L+ i  ~
fd 1

: z- |& H" a+ O7 E4 l3 z, f( b, ?( k4 G# M9 |
ifelse(other turtles-here != nobody)[
  R! C; \8 H5 f) d4 B

7 k8 U; t1 L' n- lset customer one-of other turtles-here

% E7 B7 v" p7 G! [
0 }: V$ m% @' _/ s4 z% P, x+ ^' n;; set [customer] of customer myself

, [& W& }- I1 L0 {: c4 p" T1 O+ I0 O* G$ ?4 {! L/ f
set [trade-record-one] of self item (([who] of customer) - 1)! j7 q* B% p4 [: ]
[trade-record-all]of self
1 S: a: J7 I4 j7 y$ f" A;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ `5 R9 |) c" h, |7 \& T

( ~6 I; n' Y6 [set [trade-record-one] of customer item (([who] of self) - 1)
* X2 r3 x: D* e! `! A2 e) l4 e( i; Z[trade-record-all]of customer

: n5 g, H- W7 [+ V; ?% j
1 b- c, m# T( j3 c' Zset [trade-record-one-len] of self length [trade-record-one] of self
9 w0 |5 a4 r7 Y

/ {, t# G6 A. @9 Aset trade-record-current( list (timer) (random money-upper-limit))
! d' |# S" Y4 U( m* q8 U& b# m
. o. Q2 p9 V( `+ e& p& h' {; a
ask self [do-trust]
6 }4 a$ X/ |  _- C+ f. _;;
先求ij的信任度
4 y6 F% Y# O9 V2 g( R5 @) ^% l- y' [. H. C7 g/ |5 Z7 C: t# N2 I9 C
if ([trust-ok] of self)
# ^6 O# `) E5 a; h/ @/ y3 E;;
根据ij的信任度来决定是否与j进行交易[
+ H0 @) w1 q' r# Z/ u! lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; h8 o. k3 ~. z6 I9 t4 @, _" P: l8 J! V2 C$ U8 k) g
[
; |- H! m4 E/ E( G
8 k( M  ^8 s9 X, I( h  k
do-trade
( t% {6 u% c$ ?
( h! x9 A7 e) C2 r9 S
update-credibility-ijl

4 e# a5 p7 M! D/ ?+ S1 M  }2 Y# q  I/ }) W5 E9 K
update-credibility-list
4 m1 m# O* G: f+ e9 n, H0 G

% J1 {5 h+ Z4 v: O% ^$ G
3 `/ ~/ m" y2 O" X1 c2 T: Z. @  aupdate-global-reputation-list
! M- o2 H# K$ ~+ O/ M  F/ k
3 [( {! Z& w$ j7 E  y6 w9 M$ C" }
poll-class
! r" B- C3 Q* t3 c! T( @

' o. A& f0 Q" nget-color
4 g' M- v/ N4 c$ i  N5 l8 J
) T  @' p& O9 P/ y5 K( K6 f
]]. }4 E) k" v8 x- N) R3 F4 l
+ G' k6 v$ R+ w- r- t0 u# W
;;
如果所得的信任度满足条件,则进行交易
1 x* c; s- z+ h) R; ~* ^, K  m" J9 P# o
[

+ `/ Y7 v6 N4 N& S/ B4 B% T
& `. s  S+ @; {! |+ Q4 c% krt random 360
) i$ R+ j1 n& [- f( J/ K: c9 Z

0 f/ ^5 `# l* U: i& @1 b# H" v) n* ?fd 1

/ S$ Y5 |6 x8 \; a
: q8 f; I5 M' ~% U, @6 `]
; b" V3 q9 D7 s, ?- P1 a8 G4 G
( e) B; e1 U" g6 Q9 d( y+ O% Q
end

9 E  J  ?5 l9 x: d; R
' w1 q4 H3 f  Z, l! W. Kto do-trust
" B0 }- }( H1 G( D- Yset trust-ok False0 M% t$ G& m* c6 O7 Y' t

$ V; R, d: R; j$ n( ^) `

% {$ S1 V  t( u, o) ~  O0 w, \) Plet max-trade-times 02 b& m6 s! T8 Z6 |7 T
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 R& d+ z2 V& Q" s  g) x
let max-trade-money 0
8 u& U6 K# a$ ]; `foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" W0 r! S, F  {5 a" [) H
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- w+ k7 ^% e, z9 x9 z: o- f# {- M& [! S4 _3 r8 L
9 ]" }) V$ ^* r) ~/ e
get-global-proportion
7 f- @) b/ j5 d# Tlet trust-value/ Y( ?/ h! O2 o/ m& m+ M0 p% Z
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)

% G# D; H' ]* E2 O3 y& z4 Q: _if(trust-value > trade-trust-value)
7 \3 x1 g8 Y' S& }1 S[set trust-ok true]# x# E+ G0 [" J( F! a
end
3 L4 t6 Y' ?9 G3 {5 M+ s8 T! {% \
to get-global-proportion
9 _: y! v; B% _6 [+ V! Kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- k. @0 b* }. Z1 D9 c/ @  F
[set global-proportion 0]# V* A1 h/ S( f
[let i 0
5 A+ ?/ n' q' g# ~  U+ x; V$ jlet sum-money 01 N+ L" P8 m2 w; P- T7 G) y
while[ i < people]2 K4 O) W- q# ]0 c7 Q" `# [6 _
[$ W9 G; k" Q9 m% W5 Q3 _4 G
if( length (item i3 \; t  k4 S. j) r* p
[trade-record-all] of customer) > 3 )

. Q2 o( B  P$ ?! o& E[3 w1 ^. i  `3 s' J9 ^* p2 ]
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 C7 P7 _% i. [+ A) Q. R, v, c
]3 s! e# H/ l, X3 R1 o# w
]
% y' y2 j/ V' |let j 0/ S( _7 c( v' R" h
let note 0( ^& y6 X4 J4 D' U. d8 ~7 j( C! I
while[ j < people]
& ]6 x- ~1 Q- a[
; k, t5 f" V2 B& m# a9 Z* r  n. Iif( length (item i
1 A( \. b% ]2 _[trade-record-all] of customer) > 3 )

. z6 n" i, [# u! p9 a[% l6 @! z6 E$ ]
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  E( u) g1 P; d9 S
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: x; ^2 A! X0 u, f. N
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 `! i( f! ?" Z]
( w( m* L$ _! `]2 Q7 v" _4 E+ Y$ L; j
set global-proportion note( {& V! G* f% P; g" _$ U. h3 `
]1 D3 t& M- ?6 l4 |4 A/ u8 f
end; @1 N7 t# }6 {# K
- i5 G- t) ]; Y7 q* u3 Z
to do-trade$ y. c# F+ U# N) K* J  _
;;
这个过程实际上是给双方作出评价的过程
2 F7 L2 [/ t) pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 z3 Q* j' g6 a- yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% y6 }$ J5 D4 j9 Q8 s. }set trade-record-current lput(timer) trade-record-current
$ Q7 x( S4 Q. q- e  x. Y$ @3 i;;
评价时间  [; L4 i1 o: ~9 Q3 P$ p
ask myself [
9 B3 b$ k5 q$ T% d- Iupdate-local-reputation; ]( }( z' T' h4 F7 h$ I2 `/ d
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 D' A9 _! e" R; w]
4 x) ~- D3 [8 ~3 y+ m$ K6 G, Nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 i9 `, |8 ]- `: W! X8 n& K+ u
;;
将此次交易的记录加入到trade-record-one3 s" }7 J" S- `! w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 L* j* y" K5 s9 G1 j" slet note (item 2 trade-record-current )
- e* j' G) ^! y( d' nset trade-record-current
. V" Y  N0 T$ C  H(replace-item 2 trade-record-current (item 3 trade-record-current))
( ]0 C$ O0 {+ @3 s) `) W
set trade-record-current: q# x& n! [/ l! c' z/ B
(replace-item 3 trade-record-current note)9 x; f$ W! H$ U- N! w
4 i3 F2 B( s  \' y5 d! U' s1 x) C

$ A+ r& h7 [& I2 Fask customer [
- X0 p. [3 n3 A6 a' pupdate-local-reputation
7 i4 }" g- R  kset trade-record-current: ?/ t) m; v1 {; ?( I+ ^& u6 y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& g( i  k* L+ X6 ?% }/ e]! |$ I6 ?8 ~, _9 _: W
! |# V- W) c2 L* \+ ], O# I* G- o% L

" C" [+ Q* M7 M( d; z& L) p& I0 kset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 k/ r9 y! m6 H0 E1 @! b) o; [

; Y- ?! j. I' B$ @5 yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). N3 m, y6 q  [- Q& Z7 `
;;
将此次交易的记录加入到customertrade-record-all
8 r+ o! K, }3 C; |" y% T  gend
2 X9 T6 E8 l/ ^. y8 `+ d
! G) k, z7 `9 I4 D; D1 Uto update-local-reputation# Z( F( N# u) f7 F: L
set [trade-record-one-len] of myself length [trade-record-one] of myself
* c) B7 u  \( d, a+ ]! g
1 l1 W" F$ h" T3 k$ O9 p4 D& v% o3 h1 f4 \
;;if [trade-record-one-len] of myself > 3
; a, Z6 P6 m- V* Z
update-neighbor-total8 U* u1 r7 t9 u  s# p
;;
更新邻居节点的数目,在此进行* _- g8 v% d: |& p. C2 d
let i 3
* V( N+ [. a* q& o; glet sum-time 06 K' [/ k+ n2 t3 \" l
while[i < [trade-record-one-len] of myself]
1 a5 P$ L( E; D: Z; S- u  F9 t[& |0 q! j( j( W# ]) J
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 ?1 W3 e% _2 w1 P2 g: ?% [% J
set i. U& u+ ?+ z4 z. d' L4 M
( i + 1)

) {( j, ]6 e. L/ ~]
' k% E. O* _$ v7 `3 Ilet j 31 `# [9 g& ?- x5 c
let sum-money 0" K, q9 K% e0 C* m% u) i/ V
while[j < [trade-record-one-len] of myself]
+ ^; Y8 [/ L0 R- B: z[- }. i; ?- Z9 h9 x& c
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)
" Z  q( M3 v6 Y$ J9 q' y4 _2 Kset j# L2 [2 j6 Q' u* G$ r9 @3 k6 p
( j + 1)
. p& Z/ Z  |: R8 Y* C, j% S, h
]( U! P# b- n! E: n" n7 D
let k 3: q0 N  P6 w; ^% f4 |. h
let power 05 t: u& P% r& F7 [6 T6 r
let local 0. m  Y& c  e3 R% }, w$ x
while [k <[trade-record-one-len] of myself]* n- W+ s! Y. J5 c$ Q
[4 C# x- Y7 `- v/ I. r
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)
) J4 e: }; @- z: f5 Xset k (k + 1)3 [1 @5 j0 r) d" Y" E! ~( q4 d
]
8 Z/ ]; M9 C0 p4 Zset [local-reputation] of myself (local)
2 K$ Q( {7 [! N, W7 V9 Q4 oend
1 D' ~( G6 [, k. f" \1 s, p$ n) b! i7 z4 A  O
to update-neighbor-total2 t7 N- N6 f9 X0 r7 v8 Y$ W1 B

+ P& f3 h. p# F% D$ m6 A2 ^/ hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! A5 y7 k# \; C9 I
% r  L! U1 C/ _" {; ~' G

0 W. e" G! f: Q( a. H3 i& @2 iend
: n8 {9 p7 o0 H& n) p) {
% D% P% r4 c' k$ l/ w7 T. y+ ~to update-credibility-ijl
# p+ e8 N! }8 b# {9 @) l. l6 L
$ G; @) I3 P* r9 f$ ^( x0 e1 E;;
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。( n, r3 M+ t& X0 I6 c1 w2 a- w: k
let l 0
. ]0 Q9 _+ Q3 U, n, Kwhile[ l < people ]
' u* x2 i0 t# P$ m# U% i& X;;
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
- G; c! M! S6 i8 J[
5 K& y. |- f* K/ C' A+ _let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ Z; o/ _9 w) a. n
if (trade-record-one-j-l-len > 3)) L8 K- A1 O% i( `/ {3 K+ ?% B/ 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-one
9 F7 R( O& B9 o1 j/ clet i 3; z/ Z7 d! A: |& H3 t
let sum-time 0
( u7 v# y& s! D! h- J) ?( Ewhile[i < trade-record-one-len]8 u; i9 r4 }& K. K% S, W! q/ f  K2 p" t
[' K: v/ |: e) n5 ]
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ i0 Z6 b) e- X5 {set i0 I. r( Y) g' @; g
( i + 1)

+ O: ?; z& e* a  H: o0 u2 ~]
- {8 o5 V8 Q* rlet credibility-i-j-l 01 A! K0 O+ f' B& s1 {  _1 w7 U, X
;;i
评价(jjl的评价)  }, [7 U! Z* O: y
let j 3. A4 x( R! O% [, n
let k 4
7 ^/ r# k0 H. Gwhile[j < trade-record-one-len]; T' f  U  \$ X; }
[+ m- e# D# q$ t1 l) L8 M
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
- j4 z/ |2 _" B; `: A& Z+ [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). `9 @6 B0 w1 S) b" F
set j
5 s8 i( W3 @( W3 k( j + 1)

4 B: E$ W2 j2 L8 G. a. y# J; C]
: P; x0 h  J) k" ?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 ))  p6 w; h8 b  x

2 Q  q$ z$ m) j% h
4 {2 R( Y2 k  o; Z7 G7 \
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 B6 n& ?( o7 Z8 d
;;
及时更新il的评价质量的评价: |# @" a& F) ^* k( I: {
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" u, i  p3 P  X: O
set l (l + 1)
$ \; m. P9 h( p3 }" ^( M' f]. _$ R" o0 A9 ~/ @& D
end+ D- |' J! V: L+ f2 a$ `

1 D/ v, i# Z- S6 f& K- mto update-credibility-list
6 v7 \: `. q: xlet i 0
* `: f$ u; W0 u, Q/ F3 wwhile[i < people]
6 }. r  t! G+ ]1 z6 z. I  B[
7 c( D. D) ]& W2 ^let j 0
) P. T0 ~: G2 c- b+ h7 o! r, l2 l- Olet note 07 Q- B: a9 G9 Z. \: S& j3 F
let k 0) X3 n6 h8 d" c( ?. |/ `$ l: @7 i& W
;;
计作出过评价的邻居节点的数目
8 X6 S2 A" c  ~8 W$ X  |% ^" y  {) Twhile[j < people]! p: }) U) i0 t* Y7 A- h& t3 g
[" H, m7 f8 r# _" ]2 G0 D" }) t# m& \. T
if (item j( [credibility] of turtle (i + 1)) != -1)4 S, B0 E) e7 a3 }% u9 A+ x
;;
判断是否给本turtle的评价质量做出过评价的节点
! a* V+ M* f1 R, X: u$ r' w( ?[set note (note + item j ([credibility]of turtle (i + 1)))
$ u1 z7 A- D; u& }. C;;*(exp (-(people - 2)))/(people - 2))]

( X" m$ x$ t5 kset k (k + 1)0 |6 x! y, ^' d3 i
]! i! q, n4 G7 k: B, H9 v1 E
set j (j + 1)0 u* ^3 V6 ]! q% A& u
]) y* _. y# u" q/ o
set note (note *(exp (- (1 / k)))/ k)
& b2 I5 i, V( ^& n  o6 Nset credibility-list (replace-item i credibility-list note)& G( ~9 E0 y1 ?( o3 e
set i (i + 1)" m7 g! j7 ]- a
]+ @8 h  z! O( S3 U2 H
end* o2 {' e3 @# `
& y6 R  c% G' v
to update-global-reputation-list7 L/ F) |; {+ e+ E9 F- }4 X
let j 0
( _* |& p  g# r; Z8 f0 q2 a' mwhile[j < people]3 Z! s, y, q. @: j( F
[- |8 X7 n0 K1 {8 f' c
let new 0
2 h' `! T$ W" b- K0 @;;
暂存新的一个全局声誉
7 r1 [0 T" S8 C$ w' Zlet i 0
) w& z1 P& v" {4 l4 Ulet sum-money 0+ q3 `+ V  F8 z/ g. {
let credibility-money 0
" J) H4 v, z5 v" ~7 d: ], {while [i < people]
, e7 A, ?9 H6 k[
! d) S! W5 r" d5 t6 e+ d# V' v) x+ Qset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" h' D  q" T7 |& r1 d& y) X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))  U  S- e9 @$ Q* w3 f
set i (i + 1)7 R0 o  y; z" ^8 j) H* _+ d
]7 t+ p$ w% L  K! \
let k 0
: l% ~, k1 I& K: G# p* z0 _let new1 0$ n2 B8 c3 i& h: J# Z8 z' c3 Y' W- h
while [k < people]( R) M; \& d7 s! j. D3 v* Q3 g
[
2 w) p  g2 M" c, F: A% ]- d/ l0 V" lset 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)
- _& x0 \( \" S# |set k (k + 1)
# @# W) h; ~& k]
5 C  L+ U/ m" g! y8 _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: ^: ]% g; G4 e' Z4 w" sset global-reputation-list (replace-item j global-reputation-list new)
4 v) f1 s/ i7 u( kset j (j + 1)
) g* u( ?' U* T  r& D8 j& R]
& B, t, X/ U: {- r; ?) b( [- r1 Y+ Vend
+ U3 n6 p3 q! h: f% j
/ [  r: `# ?" S9 J* x% M6 S' n9 q4 x1 }% G0 Q
' G7 F, j4 F' y, a; ~8 O$ m
to get-color
) {7 ~% c& M- O8 }  g
6 I8 i" r( U# ?: m; Lset color blue
- x  ~" R5 u0 y, w3 s" \% B
end
+ y" u4 d- I$ o' b0 S  f9 E8 ~* ~* l- v* r6 y; ?, r/ d
to poll-class7 ~: t( M! d" Q+ d2 i7 v. V
end
6 o0 @; n, m9 |0 ]/ L' L- |8 H8 O7 t/ X) {
to setup-plot16 u$ h$ \5 w% X1 D
0 ]' L: E* d2 I, Z: N
set-current-plot "Trends-of-Local-reputation"
2 ?% K# z7 S7 {8 ?! h

& f4 i* E8 U- X! `2 A  q( kset-plot-x-range 0 xmax
% P0 y* W+ X0 r; F) K. y2 |  x
& K% V1 @7 N. ]; u
set-plot-y-range 0.0 ymax
" c1 t8 a* \& ~  Z3 N
end
6 K& F( c8 o+ h9 `" m
7 g' l$ C* n# t9 Y& N& eto setup-plot27 T# G% K. H5 ~& P9 Y  w

% x3 e5 I1 c/ m, S5 Iset-current-plot "Trends-of-global-reputation"

2 O6 @6 R- ~- j  L, T4 L% _4 B* F' h, v  J' S3 c+ q' j
set-plot-x-range 0 xmax
% p2 ^% G- o: W2 Y$ y
" {/ g& i0 b" U' I! Q
set-plot-y-range 0.0 ymax
1 H8 C9 j0 O' K! i' q
end6 ~" d- k: J4 R1 ^3 Q7 U

" |2 |9 n* e' T4 q3 {" cto setup-plot3
7 w3 `+ X% i) O+ t
3 ?! b' r% N# B- nset-current-plot "Trends-of-credibility"
& U! Q2 L- S* A7 N+ a: o& z- J  ]/ G+ t

2 w' h$ V& ?! W6 J; cset-plot-x-range 0 xmax

8 c& J4 J7 p/ P
6 p: A7 ]* \  uset-plot-y-range 0.0 ymax

4 D, M5 l: @3 \: Mend
% R3 `/ P: m! z  i5 A" A
4 b: V/ v$ p+ H: J6 ~. T7 \to do-plots
. ?6 Y' A- ~4 r, r: d/ Jset-current-plot "Trends-of-Local-reputation"; R9 C6 B% G4 O( L' e/ @" |
set-current-plot-pen "Honest service"
% M5 w& K+ k! e. G; z- o* _* w7 Nend
0 N' X/ L) _; @, M) c' S. H' {7 x, K, g, j2 N2 d  n
[ 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.! _9 G# y3 I3 a8 ]0 z' C

) L2 a6 C0 c+ z' k- B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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