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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:1 q* c% u' b; s3 ~
to do-business   |9 z. c5 H* O
rt random 360% ]6 u& c2 ~0 G8 b( L" x, ~6 V
fd 15 v, J- }- W7 l2 H: v7 ~" `
ifelse(other turtles-here != nobody)[# `* f9 W/ p+ H1 `0 e3 o$ y
   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.
% C* ^; N4 K" P( @5 R   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 t# {" F/ Y  {2 t
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" ?" g" W% M. p  [4 I) K& i
   set [trade-record-one-len] of self length [trade-record-one] of self& r# c4 A) V, j
   set trade-record-current( list (timer) (random money-upper-limit))
; l! n! K+ e( Y- W  q5 [6 t0 N1 v9 b+ q( Q+ f& S
问题的提示如下:5 m' l$ c( o1 u3 }! G! O% M) n

8 Z7 ~2 _& |! ^/ v. V" [& R/ Werror while turtle 50 running OF in procedure DO-BUSINESS2 J9 X" X% z1 l* R* v( h
  called by procedure GO) s- X1 l" O0 i4 ~
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 }1 e/ |3 V; s4 G, \7 H
(halted running of go)) y# \  W; D3 @, Z

) O6 z! y* D  E% X& n2 e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~~/ C1 K7 [% S( t" @7 {1 Z5 M3 B/ 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2 t) ]; ~4 R6 l, O$ l9 ^; t; x
globals[8 r4 k; B" R" M4 G& D' g
xmax
5 g7 }' X' b7 Dymax
; x: g+ c! B, }9 v  n2 Y5 p4 {global-reputation-list  N' G) V. w0 K7 ~0 V7 H+ n
1 s( R( z( ]6 S: a
;;
每一个turtle的全局声誉都存在此LIST
: ?7 x4 i6 |+ Q' C& \credibility-list0 u, T+ W& }& m% G% `
;;
每一个turtle的评价可信度4 l9 o3 }; h* M* w; y: s' h- k7 Q
honest-service
  B" M; x: S* Q; H; E) y7 V; _unhonest-service
/ V: `; ~0 z. o, o2 q0 ~  loscillation
8 m" \' O  p8 {( r" c/ Vrand-dynamic
' {. X7 a  g8 ?5 ~6 @]2 F* [" A( K# c; q+ @. m
! U! @" e9 p. R1 V6 j# ^, ]
turtles-own[
( A( k/ k, Z* J! I0 w! I2 Rtrade-record-all1 t+ Q' R  B0 a! `% N
;;a list of lists,
trade-record-one组成
# P7 l" U7 G! z; U6 C  Wtrade-record-one
# Z& y; M% }/ J. ^;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 G- R& @' ]0 g$ ~' ^
+ y3 T# x" G% r$ O; j# x
;;[
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 f5 O! s* |! Y
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]
; x% H2 c3 ]8 K0 M) ~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% W; p: o% q0 t+ z# M# K
neighbor-total
2 z: P' U) h- M2 e2 `0 U;;
记录该turtle的邻居节点的数目
  l. p0 `) C9 s! qtrade-time" J: m; B- Q! X5 e  j, y; @
;;
当前发生交易的turtle的交易时间8 N, Q1 M1 ?* F9 V/ J+ N9 t
appraise-give
0 L2 K. o% I7 _" A;;
当前发生交易时给出的评价  t1 h  K* b+ f
appraise-receive
$ |6 L0 |8 T2 u1 g7 e& ];;
当前发生交易时收到的评价& b' R( Y" u8 Q9 U* J) c
appraise-time8 m3 J7 T: v' K) f7 _6 U
;;
当前发生交易时的评价时间
3 A0 g1 a) u' m2 o: ~& dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ M1 V' u  o/ S& S$ m6 ztrade-times-total
1 n! a5 f) F& z* \: U4 A- ~5 l' s;;
与当前turtle的交易总次数
6 L4 P2 D7 }' P7 [) Itrade-money-total& g, q- J) ^  e8 F
;;
与当前turtle的交易总金额
  C) ]' {8 F- v) m0 l6 j6 Vlocal-reputation
) d. _1 t3 O! @- }- Q; }global-reputation
, x" a  c! E2 M+ o. Ocredibility" v4 e  x- J- i# q' s
;;
评价可信度,每次交易后都需要更新
, a6 f% Q, Z' y% t0 O- @' Rcredibility-all
3 h6 A4 l! l) w( P6 m;;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
9 M0 R1 N3 A" Q# j3 n) s/ H3 @$ Y6 d' \
;;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! b* F! R& i$ A9 h
credibility-one' @9 n) i' \( d3 v$ v6 J
;;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people9 O+ U( j1 w# y) i
global-proportion& u( \- V" f6 Y! `" t. B. x
customer; J* g* a! L# M; T) h: l' ~
customer-no
) t2 Q/ W( X4 O1 R( k3 v8 Ftrust-ok
. L5 y0 o5 U$ L! ]( X3 _0 F2 |7 ctrade-record-one-len;;trade-record-one的长度
& o. C: @# _, y) Y5 r5 q]" B3 J$ S: C) b) i) ?

8 r7 v+ u* o2 F;;setup procedure& H1 @9 d! p$ M% N5 m
5 }' y; d5 h- z+ M+ Y, x
to setup
; y, T" ?0 V; D, F2 ?0 \/ Y, i: S# L  N( |; Q7 q
ca

, e$ b/ k* R& V" t4 X: q
: \3 P' s! t4 t( W0 T- @9 Kinitialize-settings

* k  M0 u1 l3 }9 D
2 Y- f+ a4 `# `* k7 F0 ucrt people [setup-turtles]

% v/ ~9 x3 u% N
/ M( u7 S" m. K. _. P" Qreset-timer

; b. E& z6 C+ ]! Z3 Z+ M
- o7 e3 k5 z/ e+ Q3 Dpoll-class
. c, r/ ~- O0 H

: x$ L0 i8 s! a, M: ~! |1 z, Jsetup-plots
% w/ ]' a) X3 g  e

: o3 m( O+ V7 M, A" }do-plots
" [. m+ L& n" q1 C5 v* \3 ~5 Y
end8 x4 T. g, H3 _1 c
/ F* Z+ p, b+ h6 A* p" L
to initialize-settings- e  X7 Z$ u4 b- C5 n8 I
1 ^2 z; }8 k% a) r1 G# @  d
set global-reputation-list []
1 X0 m: d) K5 I$ ^( ]
, i" I" {1 g6 e" q+ g
set credibility-list n-values people [0.5]
  ~' W2 G! f1 \, g
/ L  l) R5 f0 }5 i8 o" z8 S: A
set honest-service 0
, g8 m; ?  y; k. J* Q/ q  ^2 b
6 F7 P3 N0 N; Y1 V
set unhonest-service 0
" e! e6 A7 ^9 N! s
( ~' \  d6 b- Q- y4 e
set oscillation 0
/ G/ |- Q- Q1 o6 W4 ^( K" P: d
! Z' M; E& z5 o  f* i
set rand-dynamic 0

3 w0 J8 C# B( `! |* ~+ T8 [end- r& A: G* W& ?* h& M8 J

& @7 @: N7 w0 g) Lto setup-turtles $ {: _! O6 O8 j. s. `6 h0 K/ j
set shape "person"/ v2 Z# z& }: m  [* K. v: a
setxy random-xcor random-ycor
) E4 \/ c# {# y0 q1 Jset trade-record-one []& c" |' @; K, }6 g4 e9 Q
# C+ p+ T  A4 p  b; B/ q( V$ w
set trade-record-all n-values people [(list (? + 1) 0 0)]
! g7 ?- a; y7 N- L1 g

9 z6 {; l% J/ @9 Q7 oset trade-record-current []
5 f% W) g; r7 A8 v6 J4 }7 A% {set credibility-receive []
& z! w1 M; x" n  \7 vset local-reputation 0.5" \2 Q+ h0 O) j% I8 I7 @$ c
set neighbor-total 02 j5 H5 m, e3 c/ e
set trade-times-total 0
8 O" t2 t/ E/ ^/ _" B3 eset trade-money-total 0
$ G" Z- K; Z% F. Z4 X9 k  Fset customer nobody8 \6 {  V5 |! \$ t
set credibility-all n-values people [creat-credibility]2 B4 r9 J3 @/ j7 l; R. m& |- W
set credibility n-values people [-1]
9 f; @# h3 }4 ~get-color
1 a/ u+ Z3 x) D4 [) u

* o* p$ Y7 I2 ]( {end
" t7 g& v' f9 {  ^
  F% x( _/ p- G% z9 x( L1 uto-report creat-credibility
( b0 Y9 d3 W0 w+ [report n-values people [0.5]
: T# s: w+ t7 Nend9 x) L- m! Z7 G5 J' t: T8 e; j
$ P) t1 t& I$ e' [- V9 ]
to setup-plots
$ ^/ }! t, e9 l, j' `5 G
4 L! V2 g1 p- J- G/ D4 W/ ^set xmax 30

* W/ _% O# e4 |6 q2 @. k2 f1 f
% I6 i2 |! m4 P% F$ V* C+ W8 ~set ymax 1.0
0 [! T8 y8 W& i( `5 U

+ |0 h4 q  Z! L. p/ p# O" l+ N6 Jclear-all-plots

. p# N) C. ~3 |  x5 b- {. P3 l
, |; l) q# X9 g+ J) f4 hsetup-plot1

( ~/ U1 L; U  `! R' _% b9 }: H: f; _* l/ O. q
setup-plot2

; c7 }3 o; y1 ?+ m2 s7 X
% |+ z( Y# [/ msetup-plot3
4 _' ?0 \, j/ @
end
# O+ ^( S5 d' y8 [# P2 G2 H* L* r' g7 E$ z4 b9 _1 w
;;run time procedures
: e* }  T1 a7 ]7 a! [
6 c/ u6 P% d& w3 N, |( I4 Eto go4 a+ l3 z4 `# o2 n; x

, p- V, V: [# `6 _& T& o5 K. gask turtles [do-business]
, p) x- Q! k. |  W! [1 d% Y
end
- v! Y0 z  q; R& A  _" p+ j* @$ Q: a- \' _4 z- O# ]
to do-business
0 v% o) r* n8 _, M
4 N9 T0 E& \: V. r- s3 _, z
7 _6 K  A1 t0 ]6 x% |3 ^, p
rt random 360

4 r. M) q) v( N, Z
  Z* Y) Q! Y/ T& T1 |7 q8 F% Ofd 1

. `/ M" W3 y6 v( |, y% `& A  M/ K# C4 y. R. E2 p# @
ifelse(other turtles-here != nobody)[

5 A7 B0 |; f# ]$ Z& F, Z+ _
# w; ]9 I3 v# ^9 U  j2 L% G8 Dset customer one-of other turtles-here
* d. t6 N3 s! w
$ J( }( q& X) M1 O4 G8 r$ k
;; set [customer] of customer myself
( n3 R; o3 z+ K7 D* L

6 ]. T$ M! k( C; c1 L. i- N; rset [trade-record-one] of self item (([who] of customer) - 1)
, T' @6 b6 G  [8 G1 e& }( @[trade-record-all]of self* p& F8 B* W- O
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

9 Q( ]( I6 q2 T( C! X& C9 E
( t" `1 _( o8 u0 S/ Vset [trade-record-one] of customer item (([who] of self) - 1)
4 I% Y; i1 K: a* {& L# B[trade-record-all]of customer
. F/ H+ V) t/ G4 r; _

1 a* t; L* ^1 l8 A2 r1 j7 T1 Uset [trade-record-one-len] of self length [trade-record-one] of self
- ]" X( c/ R5 |$ |7 H- s) z
0 [7 L/ N8 j% }7 y5 p  b% b
set trade-record-current( list (timer) (random money-upper-limit))
- e* Q) u8 x+ O1 t  v6 y  N% C! H- P5 G
  c1 g7 V8 x6 R' F1 I8 x9 P
ask self [do-trust]& H/ M7 p4 e3 `" D
;;
先求ij的信任度
/ T7 e& }0 e4 h" r4 D$ ~1 W* F( M2 b5 Z( k6 w2 z
if ([trust-ok] of self)! l" p+ F! x# [0 Q
;;
根据ij的信任度来决定是否与j进行交易[% R, l: n; B7 g- P
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 Y  u# V3 l" e7 x) {0 l

6 M" u1 B/ Z" T5 ?# b[
) G* ^% v) x9 ~

7 a5 ]( `9 V* O* V- Z% o3 c; C( c5 kdo-trade
- G, A- |$ r5 [$ @( s$ H

/ s0 b: E6 P3 wupdate-credibility-ijl
/ i4 t1 r9 o0 o& i7 c# G

& c5 q  A* p1 c1 yupdate-credibility-list, a$ x/ A* h1 d

( x, A8 k, T* a( Y* A8 ?4 d& C0 r  V' b* s3 g
update-global-reputation-list
: o, i9 {8 @  L! U" K! c

& B' U; J7 |4 u4 H  mpoll-class

2 k/ x, A% ?9 Z& V
4 D, {4 v# T7 A0 Lget-color
; A; L6 k5 D  J

) M9 Z2 G' A% E" S4 J- r]]3 j; E& s5 \5 s+ p
0 m4 B' l+ ^% ]7 ?% p5 s
;;
如果所得的信任度满足条件,则进行交易8 e9 e3 Q  n* F3 k0 |3 [- S
! {& T, |% i( q! M* }9 i
[

6 t5 k1 m! v1 p* A; j8 [! m9 D! w& j1 i0 I( c/ @6 \. |: U
rt random 360

  m" j9 _/ D5 s+ J8 _# ^* h, X; m
fd 1
8 U4 j) e: L8 k

  C' D' }& r4 q" u  K]

8 |7 Z9 E( z3 t: `/ q  F+ k" ?
end

9 J# M8 `" i6 [. o: s
+ d9 j. m. I7 \) y1 }to do-trust % p1 n2 G% Y' r/ g: g& B! G6 \* h: z
set trust-ok False
) l$ m5 F+ E( `$ G( M& m4 R- u" R) r
0 l: o" T( w$ o, g  y$ p
let max-trade-times 0
* z5 c' h1 q2 t7 z9 T. B: Mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# k% `% J) l, P- ]/ j7 e, E6 ?) K
let max-trade-money 0
8 ^5 P* L4 m7 b/ t: C" Bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 [% g& n) b( |5 t3 a: j) R
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 \% b3 r: f; p( i
- |/ D0 B$ v6 _- _- V2 ?

; K' g4 @7 r9 f& S( L7 o1 Rget-global-proportion
: u: n  B: q) llet trust-value
% B* x6 ]0 f2 F- \& Ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
% E4 R0 J; q( s# Y- V4 ^" e# ?7 m
if(trust-value > trade-trust-value)
  g/ d+ T8 Q# P. l" G[set trust-ok true]
" P6 A: i7 O6 y9 v" }' |: D. e3 Zend+ O6 x% ?$ S2 D: i
, I) M& y$ G" W' I9 W
to get-global-proportion1 B" ]4 ?5 L4 O8 T) `9 d: K# Y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' C% E( x8 z0 i+ O# z5 v[set global-proportion 0]
3 I6 O) K$ a+ L4 Y+ h[let i 0
! X5 m$ S8 [$ |( L6 F, Llet sum-money 0
2 Z3 L7 H0 z( Hwhile[ i < people], q8 m( Y) X3 F5 A; L8 K* M
[
8 N" v7 d1 q' j( s  r0 l5 ~if( length (item i/ v5 u  q) q  R- t  f2 v( t- L
[trade-record-all] of customer) > 3 )
7 t5 X! v$ i8 b( {( ?' Y6 K' @
[
1 j& x$ `# }( W# h7 e( }( a3 z6 J6 p  [set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 }3 v& n8 e( ~- s. P; x6 }]' o: Y7 }. T  h5 w, j
]
  g7 d& @0 b& y, v0 X9 olet j 0" K1 ^% f+ J0 x9 J5 i
let note 06 X# Y" D$ ^/ |3 \
while[ j < people]1 Q: y- s: k$ s% ]0 o$ _& w
[
+ ~- N$ \) b3 H* D" Aif( length (item i
2 x6 k; g# y  \* f2 o/ e[trade-record-all] of customer) > 3 )

- R/ J: w) |: f9 C8 K* v8 D[
" C/ A! p" v4 o# Vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 r3 J& i; \5 L5 v7 k" M- a. i
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) t# K( S- g7 B" F4 _[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ J( A. q! y" J  s2 @]
) G" S7 R/ T/ X]  j( a1 |: H/ }& [  q
set global-proportion note
% P: `( z, ^  S$ U; o2 G/ b0 U' ]]
' }! ~! V1 k, v) y3 }3 Dend
% ]$ J3 P, b( Z8 L  x4 y% Z  D
( n2 Y+ C4 r, ^; h: E) Fto do-trade
1 {1 o4 p5 c( X4 |/ B' L" Y! R4 l;;
这个过程实际上是给双方作出评价的过程
8 k# Q0 ]) v4 [( o* y- W/ n1 {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 @% o- m$ R7 Z4 v+ K4 h5 z2 qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 u. U4 s1 W3 }, Xset trade-record-current lput(timer) trade-record-current
2 @4 ^: v  g7 ?8 j: T/ p;;
评价时间
1 C) i% K9 v4 H% R) ^ask myself [
6 J& l. R1 Q9 [2 X! `* ~update-local-reputation
* Y# E/ c$ ~% r4 U/ \set trade-record-current lput([local-reputation] of myself) trade-record-current
" O+ V$ `/ m4 T$ i" W5 d]
! a# R4 A9 E7 W; yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. V( y$ K- ?: b+ C: d. o;;
将此次交易的记录加入到trade-record-one
3 b3 x5 ?8 o% kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 E% U; |9 N0 t
let note (item 2 trade-record-current )
2 C: G6 O# Q' X0 ^* K4 Tset trade-record-current
$ P. S' _9 B: L% E(replace-item 2 trade-record-current (item 3 trade-record-current))

6 W( Z% @4 V5 s9 V1 Mset trade-record-current
8 _  Q0 p6 K$ r& L" m1 H(replace-item 3 trade-record-current note)# T% G+ _7 `- R3 b5 P0 c1 X* }

; V" p1 c; a4 K, H

9 u: L, S3 c4 M, Yask customer [) q8 n# ^3 q) K2 r: I2 v- u; ?
update-local-reputation- n5 \: Q: X* H3 u: h
set trade-record-current8 p& R2 a. K( w* I2 E  V% g: j
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' f3 k0 y: N% m- I3 b; k" M
]
/ R' ~- l  m8 S1 w) o* ]3 V+ h" z' w  i5 a' X9 V3 L
& E9 v# V9 E; d
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( V+ h3 @' T! w) h
, E% F# m# r, f) D3 S& d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 \& _7 C0 ?: Y) O1 Q8 j;;
将此次交易的记录加入到customertrade-record-all
' j- Y7 i* A+ K3 Vend
) K* o( q9 U, j. `8 x' \
4 ~0 i4 x6 |9 k/ N1 W' g0 z+ pto update-local-reputation
- |2 |9 }, H. i) O/ I1 Tset [trade-record-one-len] of myself length [trade-record-one] of myself4 B. s4 y+ N$ w" ], I1 f7 u
9 P+ \3 e  Y! f& l( a* ?+ I
2 R& m5 R% G9 Y  [
;;if [trade-record-one-len] of myself > 3
! e* g6 D/ q) v: K# I
update-neighbor-total
* `" s  ^5 g( N* m2 {/ S4 E# w) ];;
更新邻居节点的数目,在此进行
8 o  _" ~; c6 x6 J, qlet i 3$ n3 ~2 ^3 _# C0 O' [$ {/ U
let sum-time 08 A  w' `% ]7 c8 y6 q- S. K! s
while[i < [trade-record-one-len] of myself]4 X/ ^9 f+ o& z" W
[' ?% P" ~3 |/ ^' a) j
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" ~) d( w) k$ u% aset i
1 P9 z- x* G) G  c( i + 1)

% p# c# b. X. V% \) ]; P9 P  b% b/ Q0 {]
" i$ z3 _- p4 _+ e2 hlet j 3
# O& |1 J& |, y2 a& q. m4 ]% Vlet sum-money 0. p+ Y% B; n6 J9 c
while[j < [trade-record-one-len] of myself]
- [$ Q' {- {5 H1 ^0 k[
6 J. z. [( ?, Vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
# Q' _' e  i7 Z( A2 e0 Lset j
2 V' M0 S9 Y, D4 V3 ~4 D" h6 B7 Y( j + 1)
+ W5 v: f7 k3 S% g- @, ^/ Y4 }* t
]
! ~" i7 }; V5 R9 M! Nlet k 3) i5 j8 _' k9 q% R' ^
let power 0
4 Y. o% U1 R# ]8 v. H+ C3 [, ~  z7 ^let local 06 n% B3 L- d6 j$ I
while [k <[trade-record-one-len] of myself]+ ~; v( P2 ~* s9 u5 D
[
. D. {. ?1 u9 N: m# 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)
8 D1 \% \& C; h# ?set k (k + 1)- ^/ F% J; b8 |  h
]$ \( u- v2 B' C% x, A
set [local-reputation] of myself (local)
* ^- X- _2 e, Nend
" V% Z, K( K+ ]5 A& B# W
7 t5 }. R" o; N% A/ yto update-neighbor-total4 L+ q0 R8 I7 l& f/ ~
% c8 E) ?4 L4 h' \3 o. d& U
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ R3 n  [3 |+ t# w8 R' s. W6 X! t) }; M4 Q
  v" X: T" F9 [& M) v
end  \. s8 l  a$ g' k4 D( t  M, f
2 x( c5 y5 e) c( z2 T, i. N6 S
to update-credibility-ijl
0 _" U5 {) n- [- Q) [# S1 Q0 y+ K) u* z7 h$ P7 A$ A9 q) Z1 P( 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。. W9 M7 l3 N) {. e  G" y; G0 V
let l 0
% N: x7 V( L) w2 y) W8 Y8 twhile[ l < people ]
; b/ h! R7 K6 s* o  I) _* c- U;;
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; X9 M+ Y8 A# @
[
* G, P$ x" B0 C% Xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer). X1 l1 B: u, @) W: i
if (trade-record-one-j-l-len > 3)) `" O3 m$ |1 ?# _; v  t
[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 I$ I% p: A/ Q9 G: @let i 3
& u( K5 M& I2 v( s& qlet sum-time 0
( f5 K/ l* e2 N. [& dwhile[i < trade-record-one-len]
* M, ]  `  L) Y( {- M[; Q- T" ^" |4 H& m: A" h" X
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) P! g( f/ g  u& ]( a$ D* Oset i* K/ I4 x4 y! d( }, U
( i + 1)
" q" N5 R; f; ?1 Q- ]; p4 d6 `
]8 p0 W- F7 @5 x+ K
let credibility-i-j-l 01 s; {* E8 o8 Y8 W' Q9 `
;;i
评价(jjl的评价)
/ f7 `; k2 P( u& G2 c+ s' wlet j 3( \' B6 ^6 o5 W: V# R/ {
let k 4# \( m: k$ y4 N% }( \4 `6 e7 C
while[j < trade-record-one-len]; t7 C2 U8 I/ x+ U
[
! R5 m; Y5 d% S" x) Y6 uwhile [((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
$ c; d1 F" o$ N0 x" a) J- F! oset 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)
, ^0 C/ S2 _( i# [& n7 k' Dset j0 h9 i% h& l$ \- |
( j + 1)
' K' r; U9 L% y% d
]
, G; ^7 |1 l  S6 G% f. E$ oset [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 )); F( L1 c# w& `- K$ ?9 A
% O& z1 O) L9 Y# b2 F6 x
1 H2 j8 u& u5 {
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 A3 n( A; L& o( k; W;;
及时更新il的评价质量的评价& o! h2 A0 o; F- G8 U
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; ?& O  }2 q% M( o* Tset l (l + 1)* I$ D( ]2 U  R. }6 `. B# X0 v+ d
]
5 c# t; i5 n0 U3 C& D4 q) oend1 D. k* x0 M/ V4 i6 R5 Z

' N' Z* e7 |: P9 E0 B6 Z6 H) {8 eto update-credibility-list5 W  _, c4 Y9 Y; Y7 _7 U
let i 0
( `  [, o" G4 r( L/ ^/ n5 r" }9 owhile[i < people]% R: ?' n' c; e4 @: w- n+ K
[: {0 @1 l: J( h
let j 0
2 O7 g# |% ^3 m/ N) V8 {5 flet note 0
- n6 r. w6 k$ z% |9 l  w7 llet k 0* }; F) U$ K& U* G8 Y/ a- z
;;
计作出过评价的邻居节点的数目+ C4 i9 S( B4 v+ K. R7 ?/ j  V& E
while[j < people]
/ ]( N( s9 X! F6 [. i# T. f[
# ^( J) r' y  o' \( Tif (item j( [credibility] of turtle (i + 1)) != -1)
; d4 ?+ s. l7 ]# _+ F+ [' Z;;
判断是否给本turtle的评价质量做出过评价的节点8 F- u2 h* [' U( Z1 j6 B- e/ ?! \
[set note (note + item j ([credibility]of turtle (i + 1)))
/ {# b/ x# J: E: B;;*(exp (-(people - 2)))/(people - 2))]

# d/ ?* y9 t1 _: U0 ^3 tset k (k + 1)
1 I, K( N& W7 i3 n, r( Z% S]# n* [! |. \2 E" D9 T
set j (j + 1)* C  @: F0 l, Y
]4 W0 [, {) t) ^* q: g. C
set note (note *(exp (- (1 / k)))/ k). `; ]) k8 S5 e7 N/ r9 \5 Q: A
set credibility-list (replace-item i credibility-list note)
5 A- y4 P4 C4 z8 v. b$ x4 v# b9 `, N8 Pset i (i + 1)6 ^* ?8 L# I4 ~5 l7 \* F/ D8 X$ d
]% y  Z+ s1 ~: ]
end: c% j) ]  Q; U7 t
& B1 a2 P. `/ f! a% s$ J% D" S0 Y% Q
to update-global-reputation-list
5 G, w! ]5 |( s) r" z2 Slet j 02 u1 U  ?; ~$ |/ Y- ^! t
while[j < people]
5 n$ @# K: f" U% h[
7 i6 V& O2 S# ?- clet new 0! P# z8 H$ u7 G: J! u# Q1 s0 S( Z2 t
;;
暂存新的一个全局声誉8 N6 Z* |1 ?# Z9 j2 Z3 U. k3 @
let i 0
9 I" b2 |: _, e* q- D* i& C3 M2 I& ilet sum-money 0
2 {) k6 S' K; ylet credibility-money 0
5 d% o7 w7 m6 w" @9 e7 Rwhile [i < people]! v. ]" g1 A# S/ c+ i& S, p
[
7 ?' \' g! T' e* Bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- z& j) o* M7 a! a0 o0 ^* f
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( [0 z8 G- M, X' l. Lset i (i + 1)0 E) D. c! [  g8 t
]
; X4 r$ v1 `2 g$ z( c; F7 L8 alet k 0! k5 }) J- c" O0 v* I
let new1 0
: n8 q$ E; M' f* @7 \$ ~% Twhile [k < people]4 ?+ e2 r/ e+ z9 Z9 k: u
[' b* c" ?& W4 n" n, g: ~
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)
% Y8 F# a8 a* I4 X- G, B$ |set k (k + 1)
3 b8 l& y, w# E9 D6 s]4 m4 g# j' ~' V6 O8 v3 W% O6 V
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 C+ |  h. w, t3 d3 e# Y# S6 m; ]
set global-reputation-list (replace-item j global-reputation-list new)
. W# g# `( i+ H8 V7 Cset j (j + 1)
" t- T- j9 {) K/ [+ I]9 s) n2 b' Q; U
end
0 y; ?7 `) T7 f: k8 x% F8 r9 h* f% U$ I# b7 O1 L3 g/ [

# Y/ n* G6 r0 h5 _. }
" H& K* C* ]4 C9 Q1 `  Vto get-color
/ e) V7 A+ L0 s
6 K0 Y' Y) p, O! [' ]set color blue
0 w$ ?. B: P3 G3 Q; U/ Q8 P
end
1 H3 A6 Z8 P0 u* j8 k) ~$ n: S8 H. p! O1 m7 F% Q) D
to poll-class
6 p1 W9 v  S! U! jend
' q4 D, K! m7 r: S! i- G3 P& ~% W! r: H6 I& t3 ?) ^
to setup-plot1
0 w; T# ~! k0 v& i0 \% d. V9 W' f% @3 r* d# u& P; G, L  \1 P& A
set-current-plot "Trends-of-Local-reputation"

% c; W7 r/ d/ ]' D6 S- a6 z  w4 U* ^
) _& \* D) q' g" d( \1 R' s  yset-plot-x-range 0 xmax
3 |2 P5 l) N1 d" R8 L- B
* b* ?( E, h, A9 _3 R: M( w
set-plot-y-range 0.0 ymax

0 I0 w  G5 i% K" l# G* k2 wend
, T2 m% b6 Z0 W7 C; c* {$ g- V6 q9 s# l7 @* L8 V
to setup-plot28 }" M; T$ j1 t! s9 n" \

6 ~  ~# g6 U% u5 k2 t0 |set-current-plot "Trends-of-global-reputation"
% z) [/ C$ e) H: Z- X0 B

1 v& W) X2 v7 N% u1 ~9 Dset-plot-x-range 0 xmax

& C& j+ Y, L3 L5 Z( ~+ k; B/ }% @7 k- O8 o3 s) x; x
set-plot-y-range 0.0 ymax
3 ^: ^9 c3 O/ E- z" X9 P1 v* _- O
end; N" {* H6 D, L( |, v! u4 N; K$ z
; |" g! @! g+ d! q- H! m
to setup-plot3! a& [! |! N4 `' x# n$ ^
9 T6 n& c" q% Z1 P: i
set-current-plot "Trends-of-credibility"

2 }: I0 C8 G! g# W; I6 J  k1 K; A3 ^9 \. k% [3 U* k& U
set-plot-x-range 0 xmax
4 G' R  \4 e: Q" u9 A/ K
) H2 I( c/ E5 O/ }$ t5 z
set-plot-y-range 0.0 ymax
  t- N8 t; s0 P' I& D
end5 i" D* i. ^( {5 U4 t" p" B6 X
/ l7 D/ Q# B: c% h! B, c+ `
to do-plots, q7 V/ k& z+ O* \, f9 o
set-current-plot "Trends-of-Local-reputation"
9 }# v: `  ?: J/ J3 |set-current-plot-pen "Honest service"7 w" V, X! K+ ]
end
$ F' L8 R8 J! A
" v* m; j; u) h[ 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 n4 T- N- `5 X0 u

* t1 @) L6 b. ?! _0 E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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