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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* O. M. I; F) ]* G- }
to do-business
% k- @  J+ s- q% M/ p rt random 360
& [8 ^# u% W/ a0 |. J; _1 L fd 1
( D- {# p0 I0 w ifelse(other turtles-here != nobody)[, T1 q3 {* _$ P) M: 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.
, w% O+ H/ i( d5 n3 ^   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# \# \# _7 y: h; o0 ^# O/ ?/ u1 n   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ n: H" U, @& }& H9 j5 z6 G3 E2 z, g
   set [trade-record-one-len] of self length [trade-record-one] of self
$ m7 Y7 Z( J0 N0 }5 M3 |# S   set trade-record-current( list (timer) (random money-upper-limit))
, \9 U* _7 p5 J' `! W  n- I0 @' l  Q: c1 _/ m( }
问题的提示如下:
; X' p. @: P4 c! u5 [5 W1 D4 z/ n! A4 H: ^+ ~0 b9 F
error while turtle 50 running OF in procedure DO-BUSINESS' }6 i, e/ G3 y
  called by procedure GO3 y) x; T7 j7 K$ [* L- O' G  s# a
OF expected input to be a turtle agentset or turtle but got NOBODY instead.3 x  F, {4 f4 y' T- V0 e& o4 G
(halted running of go)
* H) e# z) A5 I1 {" B6 W' j0 }8 N/ @) _# X9 h
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
* X' V6 @6 L" q1 H& }3 P+ J8 s% E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+ F) x2 t& o+ G+ ?% t. ?; Q8 Q
globals[7 h5 C; u, v) F
xmax
( x- \" T, `& z. P. c4 h* G$ ^ymax
! h- a9 X9 w3 I8 H' j$ N" x1 X( U2 fglobal-reputation-list
7 ?2 i/ }8 J' b. ?& c* c4 m+ b
, B' u" k7 \2 p; A% W;;
每一个turtle的全局声誉都存在此LIST/ m& v4 |; _5 X2 T5 [) X9 s
credibility-list
1 a; x8 z0 m3 q/ i* D0 [* d2 a. O, o;;
每一个turtle的评价可信度; t6 {6 Q6 }4 X+ O2 I
honest-service$ c) W6 a/ g' S7 a, Z3 j2 p
unhonest-service: i. b) ^* o5 y" p( U( t
oscillation
- d( ?7 r0 A  w% V+ {$ vrand-dynamic
6 J. f0 l) Z0 S2 ]4 w" p2 d6 N* h]+ }" e  E: C. p, Y6 w! F% V
8 C5 w# U& |$ a+ S) n( k1 X
turtles-own[
/ |* d5 L  D3 |! ^trade-record-all) B# g9 I2 E2 M& k/ t1 b+ m
;;a list of lists,
trade-record-one组成5 T7 j) ~3 B/ j) q, u0 V
trade-record-one
; Z7 @6 D! e1 M; {# p;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# [5 n' R4 o& V. L4 M/ b6 {* A
4 H0 L( h/ Z8 N& k;;[
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]]0 j% V9 {  X0 F; i+ v
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]
& h( @* j( p) P9 M9 `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
1 n7 [: F, I# p. F5 M, nneighbor-total' }0 O6 l. k1 x! a3 b; F: P
;;
记录该turtle的邻居节点的数目
( p9 j' m- K" B5 D0 I3 m8 etrade-time
+ f5 W7 z* T5 L;;
当前发生交易的turtle的交易时间
) [; N3 S' w: N/ u+ Happraise-give2 C4 j9 e; @: }% {1 n; p2 C
;;
当前发生交易时给出的评价! u+ d6 l' _3 f) l' f" ^) W) v
appraise-receive
& i3 ^5 G7 X6 M1 J! h8 b* D1 U;;
当前发生交易时收到的评价' \4 b8 t" I6 q
appraise-time
# v# L0 [/ o# ^8 I- Z) y;;
当前发生交易时的评价时间% J: v) A2 G1 P: ?" H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ H% O0 R$ j' U  Y& E8 C8 F! ?trade-times-total' D: v3 x# X0 O7 N7 J6 m, q  c2 Z, c
;;
与当前turtle的交易总次数7 Q2 N" l% [( L1 s8 ]1 e* T
trade-money-total( D/ U8 z0 w* U* B" D( Z
;;
与当前turtle的交易总金额6 H) p, q! ?' X( q
local-reputation- Q0 u) e$ o$ K' T) j, a9 N
global-reputation. [! a, }+ B" C4 Z8 s
credibility
. P+ y; U9 v, ~' O: X;;
评价可信度,每次交易后都需要更新
4 p' Y; P5 u/ |; U  _9 r- icredibility-all' j. p& N. y* x+ R* g# f- ^  C5 Y
;;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! P5 n3 K+ O9 V! G

  ~, ?7 ]0 p) d1 @; m$ 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) z" x2 c1 U" V0 E' U/ O" H. Y3 A
credibility-one( V" V" q% C$ @' }- y! \2 B
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
/ Y1 C; h  u" p4 ?global-proportion; B/ ?1 p' @; o" _) `3 f0 C
customer
4 X, i( G5 ?) k4 _# s2 \customer-no+ `5 }9 I- x3 q. e2 N) k2 t
trust-ok
9 U- c9 x, X" }" A9 r+ U8 E- o! _trade-record-one-len;;trade-record-one的长度9 B! n- G3 K% H8 c1 t" D$ C
]
! r$ B* X0 X' O% {$ t
* N" s' h3 }) I& N/ e  o;;setup procedure# z: x" w7 D! n

3 g9 q' c1 ^. V; L8 i! b1 d3 Dto setup. S* W! i5 }  E

4 W) A+ t, l, O7 x+ c0 Nca
7 G/ k) R" c) i  U
; I$ d# M0 I* _' }
initialize-settings
: a% u0 N/ c  g/ P

* Z; g! c- Z* J: G' j9 h6 C% Icrt people [setup-turtles]
& \' X7 ^  I5 B& L2 h* l2 K
. ?6 n9 H0 H: v, {2 N& F" y- n
reset-timer

( |# l4 C$ s; F& j3 g+ |, z7 y, M( i8 n
4 R+ E& j- x6 q* C$ ]: cpoll-class

) E6 ]! w# I4 X4 ?) p# c' W1 w8 B: W" F- W
setup-plots

, U. f( `% ]9 s/ I  l
  P/ j  |2 U7 ?+ \' r- w4 ?do-plots
6 H' ?' I# L1 G4 N
end2 Q) I5 Z' E' c3 Y, `) j
/ m# N3 t  _9 I* [
to initialize-settings
: J3 C7 {+ u1 G0 o1 O' U
& D! d4 ?5 S' z' u5 [: ^( r/ mset global-reputation-list []

2 T) w$ Z) ?5 O8 U' @+ d2 Y. q2 B; k& w3 J, z! O4 F% g) e; }
set credibility-list n-values people [0.5]

" Z1 t" u4 J5 ?7 i3 t* P  ^% ^  Q% `) \' j6 W. @- u1 z
set honest-service 0

* g, B7 r) j: [0 k( X; n* V
& X9 `( g9 T& Q' d# m) _) W7 ]set unhonest-service 0
" x2 X: W, n+ d% n& Z
# D; t4 Z; w; P$ x  H4 P
set oscillation 0

" ^4 _* K. E" \3 q$ U& h5 k7 C9 ~. X/ _
set rand-dynamic 0
$ C( J/ f! x7 p9 ^+ u. y
end3 j& {; `6 Y( `9 Q% u. A: P+ N
1 ^: E- c  V; D/ U. j# Q* O
to setup-turtles " l+ A- ?$ f& P8 A5 @- d. o0 j2 Z
set shape "person"/ O) P! q  n" U+ P$ ]2 _. A
setxy random-xcor random-ycor
4 B. l, W' l8 t: _set trade-record-one []
, F) Q5 P7 m, ]! y
7 m  m- S) c# k& O2 z2 [
set trade-record-all n-values people [(list (? + 1) 0 0)] * @/ r% W* @  t8 O7 P$ c

2 _0 f: i5 |, @/ {8 `set trade-record-current []
  F6 g& {- M+ {; j0 Z. W4 R* oset credibility-receive []
9 b+ D0 Z* e: U- [3 b9 Nset local-reputation 0.5
+ C1 b% F3 `0 _$ f" T/ S7 mset neighbor-total 07 ?) n4 x) m" x; A9 G. a' B
set trade-times-total 0+ v. D' {" L0 _$ I& P! ~9 a
set trade-money-total 0  N, b, R  [" M/ n' M
set customer nobody) }6 ]( M  f6 P8 }0 k+ R+ K' V
set credibility-all n-values people [creat-credibility]
7 A5 n) I7 Q3 m2 N( O3 i# Y! E: u/ kset credibility n-values people [-1]
% [& O" S5 m/ E# s0 ?get-color4 G  D3 W0 p. y0 Y- \; \

% e/ F; x5 T" Y0 ], P+ |end: b& [/ u  s0 w

& p. O, _2 u) l6 X! I* L7 \" Vto-report creat-credibility
/ [: w* ^7 M) W- r+ T6 [4 {4 Breport n-values people [0.5]
: m" x$ n8 u' P; h7 eend" ]  E: H( P0 z' O6 C( a% m

( ^) z! m) P& I- o  g: d$ Nto setup-plots
1 c" U8 r8 L) }
0 s. B# Q( t* aset xmax 30
* t) R0 M0 {+ g/ {, F

$ s6 J0 u8 V5 q" ]/ }& hset ymax 1.0

' \& D  K' t. E! d9 ]) P
0 r* X$ \0 r! p  Lclear-all-plots
6 y8 a3 V$ Q. u; l, h1 V  I
( b; i! Z0 B; z. G
setup-plot1

1 j, M, _4 h) W8 r! D4 j- V; m3 ~1 P+ G' e
setup-plot2
+ f% E% ~9 K5 @* M; D1 w8 l6 k' l& J
5 x+ }6 V6 V. N8 L/ i8 M
setup-plot3

$ A0 j. l  p) m  eend
2 _$ Q, I( n; m% n$ y- s
/ a. |1 o6 E8 D;;run time procedures
3 `' A5 H# I3 W6 m
# H7 n' C, V8 B/ ~$ t  Oto go
" O& o0 }6 q3 K- Y3 U$ E
  j% ~  L8 X* p" r) r, task turtles [do-business]
0 O; ^* p: ^( E) \1 H9 g6 ]
end
0 G$ E% w( e7 m: E. V# ^$ A
+ L: _" }% {7 N' H/ @to do-business * w2 O) j% [% ?# m. n

( I0 L5 Y$ @1 _! `) k6 u) w, |5 ]  \
rt random 360
# |$ K6 \4 }! a' l- ]( w' a, f
( j6 T. I& i2 Z3 w" x7 s# |& L
fd 1

8 g% K: X) f/ r: H0 q* ]! V, h
0 x- L- r1 E# K' `" a8 wifelse(other turtles-here != nobody)[

* P8 o1 O, g9 v+ T. u) m& [$ N$ s2 V$ y1 X6 s
set customer one-of other turtles-here

" Q0 Q1 o! w) |% p6 Y7 k' K" C
  C8 f0 z1 F$ n;; set [customer] of customer myself

% g' n5 r+ q  b" D8 x, W  {1 `! a: V) r
set [trade-record-one] of self item (([who] of customer) - 1)9 k# p4 P/ A: i  [- j
[trade-record-all]of self% ^. ^4 P7 `# u/ Z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 C$ L, m3 ^; b/ v; r+ B' Y2 _$ @  B
set [trade-record-one] of customer item (([who] of self) - 1)8 s" o. i& N9 c2 _. {
[trade-record-all]of customer

5 M3 ~& c% y( K4 x$ g9 x
8 \# R3 F1 K# Y; k! N/ Dset [trade-record-one-len] of self length [trade-record-one] of self

% J& u( G! R: q
" a+ Q; b( M% V& ], b, ^. G$ Lset trade-record-current( list (timer) (random money-upper-limit))

8 i% ]) q  c2 h; r* U, v2 v$ t; x6 ]. v9 n  j  R) c( q
ask self [do-trust]
5 ^' q8 L- v6 n& Z;;
先求ij的信任度; ~! R$ K/ O. v3 a( F

( ]: U: {, b0 b3 r* |if ([trust-ok] of self)' T0 i- g! f( p( u
;;
根据ij的信任度来决定是否与j进行交易[; F  F2 A8 B5 O3 B4 T$ [% Q* a
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 H+ h( \2 i/ d* M

, [  |" B" f. K8 y% R' ~  v[

& q$ f" c9 B: e* ?5 L) Z2 Q" l4 |. k5 l2 e2 ~
do-trade

1 u6 ]  t" L3 {# i; F1 Y
5 i1 x( E& h% \9 O" o8 M1 x4 Mupdate-credibility-ijl
  I9 P/ A' H  i

# {0 A" c7 j5 f/ E) p( vupdate-credibility-list8 E1 g) K+ w" c! l
- n, P) p8 S, \1 Z. w

; k' V! M, c4 V2 {- l, zupdate-global-reputation-list
: P0 z4 y( L+ O5 s  i! ~
* N! v# O; R3 z0 k0 _5 n
poll-class

6 F6 h: |+ _3 Q4 y2 W* G, S, m) M
+ \2 z8 {! c! n$ [* F/ Jget-color
* g3 L$ `* Z2 w2 w! Z

9 e7 k9 _) x+ p) B4 f]]
; T: R. O3 X, X1 g( W! X
% K8 K! R6 j* W! F1 f;;
如果所得的信任度满足条件,则进行交易5 f( q# ?) G8 Z) {2 l8 h# Z
" n% k9 `4 s( x  i# ?2 V  O
[
( k/ s: ^9 K& {5 [, K
8 U* H8 w7 W6 v2 U# d) ~6 `
rt random 360

+ S/ m% a6 z; r5 `. o& G) l+ o4 o5 P# z" D
fd 1

4 k0 V( n6 P6 u0 n/ q- F
0 V) w& S. n! o8 y% v$ k]
/ b2 c6 J4 Q& u5 ]/ {3 J
0 c! S5 U8 h" T, p' b
end

% O9 A! [* _0 u
: S9 F: B1 N$ Z# d) Fto do-trust
" V* `8 a5 G) y; G" G! Iset trust-ok False
" a; M1 z/ q* g& O/ f9 Q
- ~, y6 d+ }& W7 ?4 j/ A- Q8 x
* k5 i' K5 \9 B) U7 h2 c
let max-trade-times 06 r! U' K& X. P" s% e$ H) A1 s
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 T0 _, h* ?& y, w5 E4 F4 J9 p0 M' ^
let max-trade-money 0
! K. e/ T( g% {- l4 b- |' t* J4 Dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 |8 z; N  d: Q$ Xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ l. P) G; z. x; r- _( ~1 B, }

3 p5 w" l- g, R. Q3 J; ^+ S

0 E9 L, c, E( u" b* Cget-global-proportion
# {6 R+ f& s& @, t3 Tlet trust-value
* k( n" f; [4 P2 C  V3 wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

0 r) {+ O9 e& ~. ^+ X1 o# vif(trust-value > trade-trust-value)% y; D3 j0 l3 h1 b# I
[set trust-ok true]# i' w$ c: ^3 G4 d- V
end
  \0 d& T& C* I0 N2 e+ Z* v. Y8 `3 c
to get-global-proportion
: q3 h* C- Q1 t; e+ Z+ hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ |. a  K, D) y2 K9 k) L% Y' N
[set global-proportion 0]
0 B4 O8 Z0 Z' Z. e& X% C[let i 0
) r' x9 H9 w) M0 [$ jlet sum-money 0' v4 B% ]3 T$ L9 N, K8 E) \
while[ i < people]2 R. I! i. O7 J8 g2 Z1 N, q) E: O
[
+ n  L# q" m9 pif( length (item i
' H4 {" N  D# g[trade-record-all] of customer) > 3 )
& T3 N5 v8 I$ m
[
5 b0 N" T9 q: G- m+ Q- tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))* e3 Y* o& r. n9 ]) j
]
5 M, n  ]% d1 I& i+ D]. A% b7 X0 z# V
let j 0
5 M7 i" `  y5 J4 ?let note 0
, V! {0 ?; @( W; [8 cwhile[ j < people]) N, W; G1 ~! [; t3 E( O7 g
[
# k0 I( R- U) ]2 s0 y+ Tif( length (item i6 H& u5 D3 l9 ]1 t- [
[trade-record-all] of customer) > 3 )

9 P8 f8 m# T0 t4 Q$ \) U6 @  a[- q+ K& M4 ^7 ^% @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# ~' w& i. V3 b! P[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% K6 J* J0 Y) y5 |# P[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 Y: X! y. v' K# e  B2 Z4 x]# S. ?$ g1 A, n, M8 O( D8 d
]# O% A* C/ l5 @
set global-proportion note
+ S2 x/ r4 M) N: \, O: Q]+ h# c' k( o* Z; y6 t% F6 l
end
- b8 |9 [* W" @
5 V, p( z* I, S# h: K- N$ nto do-trade1 C4 [; ^9 {) a3 g5 R+ v
;;
这个过程实际上是给双方作出评价的过程
$ {- L$ ~8 W: @/ A' D5 ]9 mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- }  P+ L7 m9 e# C6 Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, \6 f/ q, O  n2 W5 E# ^
set trade-record-current lput(timer) trade-record-current8 H6 l5 f$ n% ]) v8 t, d( O# T
;;
评价时间1 b6 a! L# A, H) N
ask myself [$ X. Z0 R4 U. j/ g
update-local-reputation
6 j! D* m+ T. t, H* lset trade-record-current lput([local-reputation] of myself) trade-record-current& `7 U  G+ k9 c; @
]2 E( ]* u, r4 s. h! \! u+ d
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ l0 `/ X& a1 m! z( W2 `
;;
将此次交易的记录加入到trade-record-one& C3 u( s1 ~% m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 A" [9 B' z* r. Z+ _' n
let note (item 2 trade-record-current )* k# H- Z: k. L: A6 ^
set trade-record-current) @  {8 R, }0 c- q8 o9 @; a! B
(replace-item 2 trade-record-current (item 3 trade-record-current))

5 S# A1 V$ d: l" N+ i9 Wset trade-record-current& c1 L9 ]( L& v, F6 s: ?& o
(replace-item 3 trade-record-current note)
- a6 ]/ ~, k8 H* M+ M
3 e& W  B8 J* ?+ n) a+ u
5 p+ [, y% y6 e" P8 y, c! u2 J* [
ask customer [6 A  [7 R5 w; m. \
update-local-reputation
: [3 y+ n8 n$ M/ wset trade-record-current
8 }9 Q1 R7 y7 z. O3 _! x- ^(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 N  Z9 @& ~/ K2 l]6 z: r. h' A; E0 n

; Q5 {0 d7 S! u) M9 s' F
% j, U/ r1 g; e5 z. u4 O
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, L+ D5 n; x: d# @, }: @

( e  g0 [4 J" a+ r9 Gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 ~9 b( N* V1 M/ k" ~4 d# F;;
将此次交易的记录加入到customertrade-record-all3 s* a  Z- V& x, K/ D. M
end7 }- g$ v3 x8 f. E
/ b) ]2 N5 E5 T9 S4 ~" k8 a
to update-local-reputation2 W) g5 U1 T% X8 }  B$ A
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 k. l+ v, K5 l4 G+ G
  ]! y. x1 e- J) V0 v9 K7 a$ V/ X; n6 X! V% h) V$ _9 B
;;if [trade-record-one-len] of myself > 3
# t: u. k! c" d8 j8 y- l( ~' f" @
update-neighbor-total
1 Y9 S4 Z9 r% B1 e* }9 \;;
更新邻居节点的数目,在此进行
* J/ R) Q- m8 @4 J9 v9 ~7 {let i 3
4 R; D4 k9 e/ T# klet sum-time 0
, M# e& z* e- `/ x9 p4 c- Lwhile[i < [trade-record-one-len] of myself]
6 t& X2 Q3 y- |2 z[) U4 ]8 c3 z5 P! X3 s3 S
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) _; T1 ^/ r( U% m
set i/ o8 U; f: d4 d2 l) T
( i + 1)

0 I' q. P& b8 x]
0 M$ s5 h4 T; ]7 s' Rlet j 31 w- L: l: v* l
let sum-money 0- i) K% x0 x0 W  C9 S' P
while[j < [trade-record-one-len] of myself]& D2 d3 P9 ?' G
[
; J( c1 W2 P  [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)
. D$ l# h. e& `+ o* m- u0 q- w+ u; xset j
( r! L' y6 z- _7 u( j + 1)
( [% h5 [8 Q- e, r4 ?; c5 T( r
]9 R( U3 `! B, s4 ~: r) [
let k 3# [& [2 `9 X/ q2 H0 q
let power 0
4 D8 w! @1 O1 X) M& ], S3 llet local 0! L: [5 G0 z* G9 X7 W5 }
while [k <[trade-record-one-len] of myself]2 Z% s4 v$ r5 y3 O; w4 u" i2 \
[7 H1 R; M( t2 I. j' 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)
+ @* T1 z: a9 M5 |0 P( Rset k (k + 1)  R; O  |/ z8 |. }! x% a
]
9 S3 V7 S0 h* a: l9 Qset [local-reputation] of myself (local)! f/ z2 Y5 x7 u* O
end
  H* e. n$ L3 X: N) ^2 F/ _  L! _! ^2 Y$ d0 ?
to update-neighbor-total* B: U1 H) r( B( k
, k7 B! ~2 f4 h5 x" `; \9 O5 B  C
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ u0 n1 W# S$ L+ O' h1 |
3 z2 z. V8 Y, S! D
4 E, S8 T3 J/ w- b# k' z/ T
end" Y9 [" I4 d! V) ^* m
) \3 q" P- C/ N; J
to update-credibility-ijl + J+ N9 U4 `# g. Y

/ H) J) ?1 }3 F  ~2 T9 {8 V# }# m;;
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。4 t0 G8 F$ p2 j* A
let l 0
5 r1 M& d0 e( w& {' v+ n$ mwhile[ l < people ]
- Z6 ?( |. y. _0 ]% l;;
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
* @5 B0 [. {& i+ F[8 p# k9 W6 ^, p$ l3 X3 y$ q4 H
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% a$ M( v& W* f+ Tif (trade-record-one-j-l-len > 3)1 q7 M1 {0 D0 a. W
[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
6 d. f* b7 [: m# [& Dlet i 32 m, L2 v# [) Y/ A: e
let sum-time 0
( |9 M  s9 N6 Hwhile[i < trade-record-one-len]
- b1 Z* R- L. T: e; j0 A[
! z4 A# k6 T' w+ d$ X9 z4 V, [set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 m( O5 F/ c& G6 J( k. ~" \
set i
/ b' u; a/ b% Q  e! n( i + 1)
5 k6 B% K! }" s
]( U3 N" h% @, \1 T* j
let credibility-i-j-l 0
9 `8 E+ L9 g) L/ h& [4 ]' m1 f3 F7 F;;i
评价(jjl的评价)8 I3 {% i: `% }
let j 3/ u% `9 B6 K$ j8 M+ ]( O
let k 4, c# a, S+ v; `& d
while[j < trade-record-one-len]2 J0 }4 P; ]  i6 e  @2 I; M
[! e! H5 B! c& ]9 T& i
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
( B& a' W! Y8 E3 ]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)
! I9 g7 ?) g9 V- D* tset j
1 l2 h+ k5 X! ?( j + 1)

4 X3 ^8 v5 a+ n]' o# L3 F# u  i* C* m: ]9 L/ 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 ))3 X1 v9 e/ |/ D
% W5 y# N" R" c
5 j1 i6 D& t; y0 ^5 J3 |. m, W
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): a* V9 M) O# a5 i2 j/ R1 S
;;
及时更新il的评价质量的评价
& A. `5 \2 g4 e9 C* t6 Cset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 J+ n- `5 @, I$ p8 {8 Y4 _. \
set l (l + 1)! A9 R' S' s* f, Q. u8 z" n1 K
]1 `- {; k- H3 P' [/ s
end
, V6 w, C/ Z$ A$ {8 o: L  R: {; E! D" a* T6 h- M2 i
to update-credibility-list3 ^+ R: d: q9 q1 G; [! x5 @& A8 V8 r
let i 0
+ p, @/ p  R# F8 Jwhile[i < people]
' `' c7 P, O$ ]' c[& d4 V3 g" i1 S' [) ~, b' P# q
let j 0
0 ?4 \) N2 @2 X! nlet note 0
& Z7 o; k, u9 Ulet k 0
8 a$ V  z# [6 _- @;;
计作出过评价的邻居节点的数目
* f5 ^+ ^- _% M, z6 \9 c4 X' I! wwhile[j < people]
7 n$ |2 _- N) B2 z. a2 s4 T[
1 o$ `9 W+ e8 q' C2 Q  sif (item j( [credibility] of turtle (i + 1)) != -1)
& K' h# `$ t" \" S5 v;;
判断是否给本turtle的评价质量做出过评价的节点6 q0 ^  {6 e5 [- e. i* J% g
[set note (note + item j ([credibility]of turtle (i + 1)))8 D( l* F+ ^6 v5 v
;;*(exp (-(people - 2)))/(people - 2))]

3 @9 E( K) N/ I! t$ w, r5 v1 tset k (k + 1). l' [3 l& F; V" y3 y* n( g
]
0 C6 a, J2 u; x7 e& q" i: tset j (j + 1)& h* h6 o) j, k# {
]5 g; I# O2 L) G+ z# U4 k4 }
set note (note *(exp (- (1 / k)))/ k)# v+ D5 Z7 t0 Z6 R1 x! z. G! I/ }
set credibility-list (replace-item i credibility-list note), ?) g( [: G% ~
set i (i + 1)9 h7 g8 b; x. ~& k3 u
]# ]* S& c9 [- i$ B' `5 V" @1 ~! j
end  |- R& z2 M/ c0 ^9 f! Y( v# Q* J2 [9 X9 R
* D2 y2 h4 j" `: {* F
to update-global-reputation-list7 y4 P( g/ D. b' m9 k( t
let j 0( ~0 \, k6 w4 G
while[j < people]
3 V' W" ~/ f. ^7 L; E3 K% P- ]6 `4 V[
. H" I6 L4 G" G# d' R$ O  c" u: J9 H% \1 Vlet new 0
& g% A& @8 B7 A/ a5 M;;
暂存新的一个全局声誉
7 k' X4 B. d9 F$ D# @let i 0
# |2 n5 Z4 i5 p: F7 Blet sum-money 0
7 |% R) R+ _& Z( ^) M) d5 S3 m! ~let credibility-money 0
7 ^9 k$ Z9 g! g2 J7 Jwhile [i < people]: X/ K1 C% [; F  a  Z4 g( b
[
- |) |1 o! a- {  n( h) ^set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* l  m) A# Q6 B- l( B; cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 z6 I7 B( V* V, K
set i (i + 1)
6 z3 ], v4 i2 N, N0 [9 g. b]
4 D1 Y( K) j9 y6 i6 G! O( b2 nlet k 0' T. C* f9 j: M; u. N2 X7 m/ L! u
let new1 0# k* P7 h$ N% f( D
while [k < people]
! Y' h$ S5 K4 f[
% u1 B/ j3 x8 M) Fset 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)  O% z6 @8 p+ z' Y2 F% Q# m5 f
set k (k + 1)
9 r. B3 t# l3 p& O( ^- g8 Y4 D]
) u5 m2 Y! P* ]8 ]0 t& rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 V: H. n3 |8 G3 l. M0 Q1 Y
set global-reputation-list (replace-item j global-reputation-list new)
- I, p. V3 Y5 pset j (j + 1)
  r1 p' P; Z; v4 T3 C9 e4 L8 ~' D]9 |4 V+ f+ L1 q. H; R% I; ]* H* m
end
1 O# g2 b8 ?7 Z- |! `% V: P; d1 A( t* ^
* a1 ~2 v/ L  Q( c. ^& I8 {5 M- v
8 v6 j% K: g/ e5 Z
to get-color7 F* _& e; I/ w3 J+ K% z

! _2 u9 T  ]. \8 t" I4 fset color blue
8 Z0 ~7 t# I, B9 ~
end
6 g4 S- }" G/ z* ~; p3 ?7 n& z+ z" x; a) Y
to poll-class
. _! R& S. B- ^0 @. Kend
" p& q: X; w! Z- A  F
- w+ A# H& V% k, I3 Ato setup-plot1
, i  ~6 k+ x6 v4 O2 I& u  C) Y
+ g& _) A5 Y5 zset-current-plot "Trends-of-Local-reputation"
1 i4 Y3 D3 g2 H# t+ v

. u+ {0 h$ T  `* J3 a' [- L# Eset-plot-x-range 0 xmax

' z+ n: p6 f# i5 I. a8 p. c! {2 F* g6 z- \4 r8 r* g
set-plot-y-range 0.0 ymax
$ e2 q+ a4 s7 b" V) w& [
end. k+ x* G% `4 H# n" [- ?

/ v9 g" X: U* j) M! T0 I( C3 Fto setup-plot2) e1 i" s6 y2 f) o+ ~3 {
- _3 v& T6 g" S" l9 I& c' w
set-current-plot "Trends-of-global-reputation"
. V$ b3 x' \( ]% g5 Q
( m' a( k% z( j6 p7 N) S& x
set-plot-x-range 0 xmax
7 u5 ~. Q" l- K  n* l

% Q# H$ V$ ?( bset-plot-y-range 0.0 ymax

: `; }. x$ {+ X# m1 o5 `end
" {5 B. y$ {: A
1 V* i8 ^) M8 |. Z8 U5 Qto setup-plot3" l. C& |5 ?. W5 Z- }. ~
/ j6 i$ J$ _1 J( {. j
set-current-plot "Trends-of-credibility"
5 X+ Y$ X# e6 u  m' y

% H( Q, U5 s" i# q% ~! Iset-plot-x-range 0 xmax
" B0 \3 q* v; s# Y, t/ y

; l! @) v1 B" p' @# a& r+ L8 i3 Q3 Qset-plot-y-range 0.0 ymax
2 b( h* u+ x9 Q: x6 [2 w3 d
end  J6 \. {$ T5 v
2 g' E- X: t# ~0 h5 a4 e$ ]
to do-plots6 ^4 t9 d  I  `5 G* h& S
set-current-plot "Trends-of-Local-reputation"! V: }$ Z6 _( f$ F* ^, b( E
set-current-plot-pen "Honest service"; a4 ^/ ?& T! F# X0 \0 P
end
$ b6 S+ r% _% E. }" f& y( V# {$ i- J# E; e4 m- R
[ 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.3 o' x. N: o/ a/ u
- ~* c, E/ y7 u: }9 `: l: f+ s$ D
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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