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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:9 ^. C7 d" X8 y( ?8 G! c  _
to do-business
3 G" F2 b6 d3 e% P1 A0 b rt random 360
8 x/ u9 i: U' q fd 1
" J2 \/ A1 o2 t+ Z; m3 { ifelse(other turtles-here != nobody)[
; A. [7 U3 W; e3 L" P) i$ o   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.' ]9 T- I# Z' J  J0 o  g
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( E; ~/ s) h0 m5 l! {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 {, D2 c6 @& j& U% a7 Z/ c
   set [trade-record-one-len] of self length [trade-record-one] of self
; \- |' Y# r: A. A* Z, c8 |   set trade-record-current( list (timer) (random money-upper-limit))
- B7 h4 U% [' F: W/ r# [
( t( P% D- r8 z& }& {问题的提示如下:  L5 Q2 K7 K( [/ U( n7 M  s

# i, e$ H$ U# A; i5 C4 B. y- k! @error while turtle 50 running OF in procedure DO-BUSINESS: m9 \9 `; N' [
  called by procedure GO
% n$ L5 t' C! m8 r' C. u1 I( m; mOF expected input to be a turtle agentset or turtle but got NOBODY instead.3 |2 C+ S$ G2 S! l' v
(halted running of go), f% P5 t9 ~& X% v1 `

9 T/ P) g; {- m4 t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~~1 M. G, Y- y1 t4 b, |5 |5 c
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
- J% x1 a$ O% oglobals[2 `# D- h1 q- u# b+ n
xmax
! D! f) Z5 i; [ymax
; {3 q8 A3 L: R8 T- t: ?2 A* Uglobal-reputation-list
2 }- o4 ~# b# {( ]/ x% x% f- y, @- e7 I7 e( j. y# R
;;
每一个turtle的全局声誉都存在此LIST/ G5 X2 b8 O2 r4 j) x
credibility-list  P( y7 w( ]6 |  M+ I8 d8 X' B
;;
每一个turtle的评价可信度( d% C8 I, \" M$ F; M+ Z
honest-service0 T: \% k' S, g9 V/ |
unhonest-service
" ?6 n& H; \8 Soscillation
9 b4 T' u9 s! Arand-dynamic
) `7 b. ?& A  ~. r$ P7 L7 S8 I]. F3 w1 Q- l/ c( t! v

6 D; J4 a5 }/ j( lturtles-own[( F7 v  U" u) F4 W7 n5 z' ^; R
trade-record-all
' d( Y5 L2 g' W8 I1 O) T+ I& z;;a list of lists,
trade-record-one组成1 D  `9 h9 s$ J, Z
trade-record-one  u! |0 Y1 K6 d7 H3 r0 Z
;;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 q+ A  k+ d, c  s5 m
2 _  r$ A( p+ G3 \; p
;;[
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]]* F5 p# I) M5 z% |- l5 P8 c
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]$ r5 v5 W8 \7 h1 |
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 R" q6 z- _# a8 Nneighbor-total
8 D, }3 f6 {6 i;;
记录该turtle的邻居节点的数目1 c  F5 O7 m1 i( [9 ]/ U/ E- F
trade-time& i3 r* z3 ^: P  M9 m: g
;;
当前发生交易的turtle的交易时间; n$ @, W8 [$ M6 n! [$ k7 ^
appraise-give
5 Z: @# g/ a) Z% ]3 V: ~( z;;
当前发生交易时给出的评价
3 z4 |3 @$ t1 D6 qappraise-receive3 H/ e6 ^3 j0 T3 ^9 n/ F' d
;;
当前发生交易时收到的评价
4 S: ], H/ C9 `! k- y( A/ `3 Gappraise-time
6 `7 I3 l. l  Z1 H;;
当前发生交易时的评价时间2 Z3 `$ p  L0 Q* ]" G8 P8 d
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 p+ q9 X" o% Ctrade-times-total
1 k/ x" R* I5 }4 k( ?3 U% q;;
与当前turtle的交易总次数+ |5 k( t% {5 q  Z
trade-money-total* Y: t& m4 E$ x) d. G1 T
;;
与当前turtle的交易总金额
7 h8 t1 f# K5 }% Q8 f5 [2 A- w" \local-reputation# k7 O8 b4 i; E. V! X
global-reputation
4 m4 R' V/ `" z5 ocredibility
# R7 S; k2 P' ]) N1 `;;
评价可信度,每次交易后都需要更新
$ `0 P' m/ q* {! n1 b! [0 }$ Ecredibility-all
; y8 ]& a4 M$ @2 D) {) _; Y8 L8 o/ z;;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
5 W" d  Q9 W* P: @! E* b- H8 l# X" t* c
;;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
$ s. D; ?  C, R! B6 z" c; {+ ucredibility-one
  a8 `# n! P, r3 G( s;;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people0 C' g+ P- x2 a! w( k/ P
global-proportion
4 \+ f3 s$ b" a$ [$ dcustomer
% }; m( t$ x0 N! ], H7 r% c- w, ]customer-no
0 d7 e$ ^( J/ G* D; ztrust-ok( l! x/ e, s2 c! z2 Z
trade-record-one-len;;trade-record-one的长度# R8 `% q2 O* `) a- u; b: ]# w
]
8 T! ^2 g. m1 i5 {3 B# l: h2 D5 B3 V: E: |2 n
;;setup procedure. N; \0 c  K  D0 C0 ?' d! Y4 C
# F. i* c9 b" r& r! B* s' F; n/ e
to setup
6 p7 K: L8 O3 |( Z( [7 F* A4 g! U9 A5 P3 D3 v
ca
4 M  u' L# N2 x4 @* _
5 f/ {0 Q  G$ d8 K8 ]" I% u% u, W
initialize-settings

5 U& O0 X3 S$ U) ]0 b9 b5 y, d
: K0 b8 ~" }1 A4 T1 Lcrt people [setup-turtles]

: E, |) k6 U6 P5 m, `. w. j( }$ [8 T4 v+ B, S; }: e3 @
reset-timer

. f* n2 K' X7 x( h9 r; c
3 m8 m2 m4 `% l# C0 I, u3 ]poll-class
8 y- S3 }; w0 {' d0 O
! l% {! ]# i3 s
setup-plots

, f) j3 }; w0 ]  v" \2 x, c7 u0 r' T7 q' N- p
do-plots
, h! I( U7 {8 m3 \' [
end
9 X3 y+ p: p# j
& n+ s8 n5 \" I! H4 Vto initialize-settings) x% r- \" Z# b( T4 w$ y# A& R
8 s/ E2 h( k" H; w) f0 [5 X3 E. O
set global-reputation-list []
  s1 z) [; T3 q6 z  H. u; \

, o4 B0 [# _2 p. O* H/ E: |! Mset credibility-list n-values people [0.5]
6 |* q+ H( V, N) ~6 |' t
8 k( `* S: _5 k0 q: a
set honest-service 0
, a5 Y# R9 `5 X1 X! P1 v# w) h

; e5 W- Y4 h# ?  p# Gset unhonest-service 0

: n0 e% j- u$ [+ K; _& B2 L, m: ^  v; d: y: G% Y/ P& r1 N9 u& O
set oscillation 0

' b8 c# R; h* r3 f7 q3 H& U2 S" n& e' d. ^/ A6 \
set rand-dynamic 0
  {: x. j4 \/ a8 F" D& F
end
# t1 F4 F2 V& i
! q, B' L( S) s# v2 X: D: |: _3 [to setup-turtles ) c3 J7 P% X7 F
set shape "person"
6 V3 b, m' b; F1 t1 _( hsetxy random-xcor random-ycor
; J9 F/ y& Z5 qset trade-record-one []
: S8 Y' L( A0 [  g3 U7 U
5 L1 @/ L/ J6 t) ^. q4 J7 T  D* R
set trade-record-all n-values people [(list (? + 1) 0 0)] + b+ \/ N; s7 u
8 ^$ p+ r1 n; R1 L: q5 z5 e
set trade-record-current []
# A; {9 [& Z8 R6 z% n( qset credibility-receive []7 v/ `1 w: O: H; p
set local-reputation 0.59 s0 g% T  ]0 A! j
set neighbor-total 0" Y8 L" S/ O( T' f" t# P3 S: C
set trade-times-total 0
3 Y8 u2 O& y, @, wset trade-money-total 0
$ B" |. M8 F* q9 L# A9 |set customer nobody
, \2 ?% [$ J& i) c. ]set credibility-all n-values people [creat-credibility]
& l3 e$ w( {" z8 N* o  Xset credibility n-values people [-1]
# x. _0 J( g2 Wget-color. ?2 f- |3 H4 t' ~) f; C
. c, M5 E4 ^, D7 b( v9 x
end3 O9 }# Q) R+ _( H; v
* r# F) C* V. w; r- T( e
to-report creat-credibility. o9 u8 L7 J* v; j+ D; s0 _7 o0 U. r
report n-values people [0.5]
' T& M* t. P' }; |end
6 F4 z$ o' S  @$ m! h& G0 G# a  `( z; B. D
6 f7 }# k3 M% x3 X9 R& [% Q" kto setup-plots: E4 l! I# i- S' e" Z3 l$ w, D
$ j2 X5 L+ o4 H" j
set xmax 30
4 X. j5 c- `: c) b

( |% Q. g7 C: x. D1 J, G+ Eset ymax 1.0

# w6 Y) ^1 [. @% m9 ~0 h( Y; F" m3 J% X/ |
clear-all-plots

% f- J8 X& `$ A; \0 u5 s. k. h
7 P/ }. y% W" o6 tsetup-plot1

0 }' F$ l4 h( l& h* t, y5 R: R
* Z9 N) W8 L) P) S# B8 H* Tsetup-plot2
. j& ?6 V$ p9 {

2 f. O2 O, q) K4 w# s# V& y6 W# E* ?setup-plot3
' l0 y, M8 a2 }" }3 {& o
end8 P5 r8 T2 K" Y0 U- I4 {
' m; E1 C" H8 G" o. T* x) C
;;run time procedures! l( {, N* y# B( W3 Z

, A+ l- T7 S5 b* {, }to go
( }7 g$ k3 }- b, r' B
$ V4 [6 \% r0 m4 H7 h" D+ ^ask turtles [do-business]
9 r% V) i: ^4 I# V/ ]+ }/ C7 A. y
end
5 _! h7 E* f- v. ]* V9 C7 o' Q
  m& C( i* ?# S. Vto do-business
1 s  E' n2 B2 R3 ^1 T

1 }9 P* H( [; ~/ p! U" p5 G: D. O5 q5 \  U% B
rt random 360

+ E& p0 G8 R. c! y+ V, Y+ P" K% |% e8 h& ^! P+ c7 @8 y
fd 1
( S1 u0 g5 b+ `. R  Z+ Y

9 v4 T! w; Z( `* z- G- U! vifelse(other turtles-here != nobody)[

' t( X8 F8 |  ]
( D7 Y3 D. V2 r: U2 R& k) P! h& Fset customer one-of other turtles-here
+ n: h% f( Z0 T2 t) Y0 l

! b# S. D) K6 c( @+ g2 X;; set [customer] of customer myself

5 t! r, |" r' h, X3 U* n
* A8 E- e) N( b3 kset [trade-record-one] of self item (([who] of customer) - 1)
# t2 P6 x% s; S- k[trade-record-all]of self
8 m9 V% E/ Q+ T; A+ s;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. R( D* a& d& q1 t  \7 }4 \& u7 Z/ }3 f
set [trade-record-one] of customer item (([who] of self) - 1)
$ s) q- ?) S6 F1 x8 O1 Y[trade-record-all]of customer
0 P7 A' i0 Q) I3 d- _, ^7 \$ Q- y

, y: e1 W1 {& q! o1 Xset [trade-record-one-len] of self length [trade-record-one] of self

/ e0 L/ K( i+ M% D# M2 t6 f4 L- o- [- @& X% T) g9 l
set trade-record-current( list (timer) (random money-upper-limit))

, w8 D' \" y) b$ t1 e% }% `$ X* z" n9 ^  j8 }  W, R7 w& w" f/ R
ask self [do-trust]
: i/ b/ Q, ?  {* m& u9 P. H7 R% C;;
先求ij的信任度, o% q" M% [1 w

, V# f) _9 I' G, k. t6 eif ([trust-ok] of self)! |6 p$ A% I8 F6 q
;;
根据ij的信任度来决定是否与j进行交易[, D* A6 S. t/ `9 _$ n* {$ F4 n
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* G) O% U! ^4 G6 k: t0 l( W( U; ~9 e2 z. m
[

3 l6 O9 E* g. o4 I1 _; h, T3 S+ F
& [! [+ x5 j  d# Mdo-trade

% D/ V4 C; ?" J+ i6 e% X
: F1 B  }4 z6 ]7 iupdate-credibility-ijl
$ y, t! P5 C: U# V
; Y2 [+ H" ]0 X$ c, c6 C
update-credibility-list% v4 u/ x& [1 Y  x1 K; f0 E) _

3 E% W7 G$ s% j# S
$ S0 S0 |8 J. i, lupdate-global-reputation-list
: n- E" X  F& h- _( b
8 f' e+ H5 m% U7 A) J4 a
poll-class
  ^; v3 o) [. e" O' Z

" o! l  Y6 a0 {9 }get-color

: P! D! [8 V  H' P; c8 e: ?$ ?0 K& k
]]- @. K- @$ c( J3 x& r% o9 }
0 E" q0 c" h' p+ q4 X+ E9 w: d
;;
如果所得的信任度满足条件,则进行交易# x$ q5 U4 h$ U& t; v+ H* X: l5 F
; M( q$ r* b- x
[

- A3 {: ^2 d& R. C$ {4 h; e9 m: c* p6 y
rt random 360

. p$ A2 g5 x' a) p- G; ?5 T$ X4 \+ f
fd 1

2 C3 ~) _2 s7 o% G3 c4 P0 f0 r) X; U/ a5 [- P$ y
]
( A# P9 t% G  P) R9 g/ w

8 }9 z& X2 y9 d5 Q' xend

8 o4 [% w) L" Y& W- Y# ?* @( g$ C% g0 u& o) Z% K& O
to do-trust
' o, b: r5 _" }, Q/ p! Qset trust-ok False0 l8 }8 d+ f% S* f: S* _

1 ?2 q7 s4 p  O8 w  r$ J$ @) G

  z0 m; i1 C, g( E/ d! z+ Alet max-trade-times 0
  O4 a2 l/ o/ q- ~foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], ^# X6 W4 n2 I" R* @
let max-trade-money 0
$ m/ P$ k# j3 P" }: Pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 j' Y! u% u7 h: L' Llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- L6 C' L5 E/ [
0 V8 h7 X7 Z' a* [$ q1 A' F
* K& b8 S& f% w$ ]( w6 @
get-global-proportion  }+ [2 f' O5 I, n2 J
let trust-value
" n- l0 g$ W. \4 W. v/ B" ^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)
$ C4 x' L+ i' a( E% [  w2 R3 J
if(trust-value > trade-trust-value)) `5 U# e( ?" P0 p- s% o
[set trust-ok true]
/ u8 @5 W' o- m9 C1 R- M2 bend
9 r7 u! \) Q7 c( c2 X7 P) D: Q* P1 [' k
to get-global-proportion
7 t. `, t) G: X+ X5 T! `ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" W5 c. I) z0 }8 |
[set global-proportion 0]
8 j8 z2 B% \) a* x" {% G$ k[let i 0
3 O8 }+ \" x8 T1 x& I* ^3 Ilet sum-money 0
: u! ]2 j) ~" m3 v) d+ v; zwhile[ i < people]
+ T, u) \0 }- V* u- _[
, a" h7 V! F* d0 vif( length (item i; ~3 c, t9 R6 G. ]6 J
[trade-record-all] of customer) > 3 )

( e; y; `; E9 x5 g  [+ Q[7 q6 G7 Q/ o( M# c
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# ~) E6 _! M+ n: S) ]! ]]
2 m0 D4 J: \1 q9 G  v+ |]
+ `. h  C: o# K/ ^& T, E1 |let j 0
9 D, G8 b4 z! |let note 0
% J8 f* ~; S( K/ o6 p; H/ ^while[ j < people]
4 D5 P9 J# _2 L, a[  x5 w( Q' G* \& W% L2 i- W
if( length (item i
- _7 k9 `8 p, N[trade-record-all] of customer) > 3 )

! l! C. r7 |# P2 W& _[
$ Z6 W1 e$ e1 ^# W' B& W) Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ s4 C/ B' h  |& C) @0 u
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 \, s6 p. F  Z# k1 B[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ i* u6 P2 x, K" y9 s/ e2 S
]4 K. ?7 ~+ \  s& Y. M. K# h
]
6 _4 B5 P$ h2 M+ Cset global-proportion note: f4 l( ^/ Y. N& D; O- r5 P
]1 P4 \* f( u" c; @) J  u8 }
end  G4 ~9 K; X' t$ O' ~# {

3 u: b0 |7 Y) n7 L4 cto do-trade; h* n% g6 v# ~1 N" u; [: ]  V
;;
这个过程实际上是给双方作出评价的过程5 n5 J* F. Q6 R0 P; ~  G, W3 E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# `0 Y4 e5 J( P: hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& D' q/ Q* v, b) j3 i* N8 j/ A) ]
set trade-record-current lput(timer) trade-record-current+ J1 c- G  i9 m6 e  b
;;
评价时间
+ Q( F+ U; k6 a5 n8 U/ G' f! v$ rask myself [4 m2 D. N( X& k7 s5 F
update-local-reputation# i- I8 y& c7 s% W1 t
set trade-record-current lput([local-reputation] of myself) trade-record-current# j. f. `. E" q: h& c
]* F  H' p0 `' r6 f
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- c" q; b. h" z. H: c% l/ |* u! j;;
将此次交易的记录加入到trade-record-one
/ A7 c% @7 S/ T- E0 X$ C3 dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& D9 I1 x  F& `1 g1 [$ r6 |
let note (item 2 trade-record-current )
- j$ B- v  E, j  Q- s$ W0 rset trade-record-current
6 Q; X  a0 P: w7 t3 U(replace-item 2 trade-record-current (item 3 trade-record-current))
) l' k- v$ @/ s% p% i: H
set trade-record-current
' `7 e9 a: x9 J2 i(replace-item 3 trade-record-current note)2 h2 p& S  h2 z, u6 N

6 R$ K8 q8 ~/ k

* E& ^4 q) S: b. [# _: {" Aask customer [, ?9 {' b& j1 k9 b2 s" [1 q; C
update-local-reputation' P7 T* h1 g4 v5 I1 s
set trade-record-current
1 V9 W- ^# _, `* i( c, `(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' Q! D$ q$ s4 u) }6 A- ^/ s: \
]
+ K! G2 E4 j( i2 w& h2 @+ R  `( B0 R2 m
' _5 x* @8 p" O! R7 e5 u+ n
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% t* o7 R( _- S
1 J- Z1 F4 u% l: f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): W, u% J" g4 N. K/ ~! V* r  Q9 L
;;
将此次交易的记录加入到customertrade-record-all
; o  g% R" T2 P' G" M: Iend, }+ ~; I+ h! R& q2 X! l

/ x# P/ ?  b, Y' z6 S# V2 P# D1 @to update-local-reputation
- o( P& I& t( I' |! qset [trade-record-one-len] of myself length [trade-record-one] of myself5 `! E+ F# S/ d0 Q

& i7 y3 i2 c3 W" B1 s; L
9 V& ~! `- I) R, X) x" u8 S;;if [trade-record-one-len] of myself > 3

  D7 z- {5 e2 }( T0 P0 xupdate-neighbor-total, u6 M- Y- j; i
;;
更新邻居节点的数目,在此进行, m1 M) r+ x+ |; U" `6 l
let i 3
8 _, n* o, H: C5 u0 Hlet sum-time 0: ^" |/ [/ J- @3 a9 R
while[i < [trade-record-one-len] of myself]
* I7 o5 n) R$ K% T* f- Z: L' `$ Z2 y[4 Y4 K, G) O/ j" D- I! m# K$ d
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* r. j& J6 T+ o3 n$ e3 M% a; d! Kset i
  g* w& A: q6 L$ L8 \. [2 _8 Y( i + 1)
+ ~" S( M5 y/ W
]0 R: i! a7 m) R' x0 ?  z* K
let j 3" T% F: c) _% R: s& x' q" Z" R
let sum-money 0: l" J7 p. a" E1 G+ V2 p2 Z* |  \+ b
while[j < [trade-record-one-len] of myself]2 \2 `  e( N9 t2 l1 P8 v
[$ H: j/ B3 k& ^" }) k% r  W
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)
5 n8 N( Q+ q; A: y* }set j: l6 k3 w$ s. {8 w
( j + 1)
) O- R1 m, b6 ]  T8 i1 Z6 _
]+ K" C0 y  O/ Y& U8 Q; T: U4 I
let k 3
0 }5 J5 X- B% P& k3 E  _let power 08 K+ {1 ~3 D% l, k; d8 X9 U
let local 0
  ?. R! @1 S: dwhile [k <[trade-record-one-len] of myself]
. ?1 X9 |2 V% C9 D. f2 E. k[
+ V* }9 m2 B- R3 ^; A3 g9 Jset 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)
  B6 G6 V1 }1 P/ O  [- Z0 B! uset k (k + 1); o" m7 O- q; t9 |, U
]
: ]0 n! Z* a+ k; Q7 w3 Wset [local-reputation] of myself (local)# V' f& [6 q- T- G! r: T! J) E
end1 v. C) K7 e) M/ b0 q
& M) {$ X& z  c$ @* i* w$ M0 k
to update-neighbor-total
: v! C4 g1 M" y, Z
' U4 e, L/ b. e8 V/ N, u& Jif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* w" _' a* v  ]- S7 {: n: F

: `1 G$ v' o# c" d* Z9 E

+ h4 s* \7 O+ ]  |- M  Dend! I7 ~7 \" ~; p& W7 B& S% Q
7 X7 @2 c  @* }' k1 C
to update-credibility-ijl : T# B2 K# d$ i
- y  d6 H: H; o- W8 w6 w8 B) Z
;;
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。( h& t) X1 e+ z5 K
let l 0
* h9 E6 Z$ p+ Q* i4 Lwhile[ l < people ]
( d2 A; r* T9 i* G;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价2 Y0 P5 S* |  p7 v) u" m
[2 f4 ?# U  d2 J) I, v3 c6 B
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 s1 ~5 l/ S+ k
if (trade-record-one-j-l-len > 3)! G: j  S0 w; s7 D/ L2 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
4 E9 ^5 u+ k  q6 s/ y9 z/ R1 m& w% xlet i 38 O7 g3 W/ {" \1 i* H* O
let sum-time 05 @4 s9 p' G( I3 _# i% F) q3 Y4 }6 `
while[i < trade-record-one-len]  N9 z& K( o( V8 `
[) Q% `8 C- Y5 l1 y' ?) D0 |. e' Y  h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), Z9 j" D4 G+ h# I  W5 o. m" a
set i# ~$ F2 [& U) X% w7 p1 j
( i + 1)
* F0 Q  M) N+ i; D8 K' `* G
]
. L+ R3 H8 {3 D. A" O1 {0 glet credibility-i-j-l 0
/ m9 R* s+ X0 i( x- P;;i
评价(jjl的评价)
: a9 A* t  d( ]' j0 @/ xlet j 34 a5 p( Y+ \; a6 Z9 \& g
let k 4
7 \1 u5 R. o+ }while[j < trade-record-one-len]
7 G& P- A8 f/ v' [8 d: ?  l+ `' ][. V" O( d. e" S
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0 t5 L& L) `* Z* T
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 q" ]$ x! W# X6 x* r( p
set j9 ?6 Y# @$ K! t; u/ E/ F
( j + 1)

. _3 r- F" K6 E- p+ y' y/ P]5 Y) B9 l, r3 K+ \' b3 ]
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 ))$ |- g, N+ r4 H2 F
  C2 A" s8 D3 p
% p# |4 j5 ^  U+ n* o% C
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- G. A! \2 K. i0 B7 i8 F
;;
及时更新il的评价质量的评价
6 u+ x1 s/ g0 oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ c2 V* `1 L( _* \3 J
set l (l + 1)7 h2 E' l# q$ }4 p7 I; @" A
]2 }3 W3 a' V+ e4 U/ _8 ?- s% ]6 `
end  F# M' P6 F* S( Q  k' m7 M9 _
, Y# L$ s) [% W7 ~
to update-credibility-list" }( f# H* m% {$ g* D
let i 0
* c: [3 O; D" W: Bwhile[i < people]
: k9 _3 r0 y1 w3 w& u& s[  c# |; ?" S) g4 _! O
let j 0& J: C' F( {% Y5 |
let note 0
: q7 T! l3 _8 S0 M, p+ z1 q# ?let k 0
" V. {7 k' |' a% l6 {;;
计作出过评价的邻居节点的数目
0 M. X3 `" k* j6 twhile[j < people]
0 P+ n9 n$ `! C2 \6 w2 L[
) i) h- o: m+ m' g& }if (item j( [credibility] of turtle (i + 1)) != -1)
0 w) s  `2 Z1 i! w( d) ~. R5 m;;
判断是否给本turtle的评价质量做出过评价的节点
0 |, s, b, o4 B4 d, K[set note (note + item j ([credibility]of turtle (i + 1)))
. ~9 q; [3 K# r  `$ Z: Y;;*(exp (-(people - 2)))/(people - 2))]
" a- a3 n6 [* u% I$ y
set k (k + 1)1 e0 Z0 \; A2 g
]
; [4 \" n! B* b) `2 Vset j (j + 1)
% @' |, H& B7 `2 G& ^- u* t]
! q+ f2 \/ k: ~0 Bset note (note *(exp (- (1 / k)))/ k)
- X! q1 U6 W. Lset credibility-list (replace-item i credibility-list note)* i8 d# e$ w1 |2 c3 `& B
set i (i + 1)! T5 l/ i: @' I* E( L  u2 H' u3 k
]
  r# q$ j! _1 g2 L0 B3 L- T& L7 Zend
6 P- J6 U( g! E8 |* i# T$ }3 Z) F" J1 D( G) \) E  \, @% M' j% c
to update-global-reputation-list* W3 a" W0 ^% Y0 y3 U( [
let j 0+ l, q* _- r( R% W% K! i
while[j < people]
/ M3 n2 q" N/ U) P. k# o[( h& f2 w" @5 u% s4 P
let new 0
" A% `* Z4 D3 {;;
暂存新的一个全局声誉4 U( u, v8 ?1 a3 E
let i 0% w( {( H& D4 M( s7 E/ H& v8 j
let sum-money 0
1 `! t' W1 i3 r' @9 \let credibility-money 0
1 t6 c$ R6 @, y! m  E" z! k4 I5 `while [i < people]
- D0 y$ u/ K" Q8 V! ?, m[
/ N! e3 ]  ]( zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( }5 x9 U* }" k8 u7 t
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ A7 G) W; @! N. C5 Pset i (i + 1)  `3 b3 Z) [. B) }
]
& M; D: t, x1 `0 S( S4 Z6 Flet k 01 Q: w$ k5 J" P" X" w) E" {. f! ?/ y
let new1 0, i# i9 F0 v4 K3 h- k0 s0 K
while [k < people], }7 b! }/ z& V
[4 o7 ^" p4 x& W  S
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)- k& f  c( E; L
set k (k + 1)
1 u" K) o9 S: D2 P/ [. Z  }  m]
4 P+ ?' O! }0 a$ @. E/ _* r, S  |set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# U, v. [" |5 t, W$ J. [set global-reputation-list (replace-item j global-reputation-list new)
! c) H  H8 l+ ?" Eset j (j + 1)
; Y# z8 ^' F2 s4 E]* D+ @( s6 s) P8 c  s. |) i. k, j
end
$ ]. e, m; ?' k: O% `4 |( Q
" c$ i/ ^0 q0 ]( n
, E& T: I2 ^) ^
4 j2 e+ Z' _: w1 pto get-color
, Z0 K1 |4 C/ i: M% r* U1 F6 _) F8 C/ i
set color blue

$ M; V7 S5 C' W. V! cend$ l/ [7 [- o; x$ x4 |$ I
5 I5 B. g: ]( Z  f/ N
to poll-class( Y2 M/ b% M# V1 K# z
end% ^( P7 m& g$ c# R; H& F

, c# \) y1 j7 Q; Nto setup-plot1
" ]5 ~4 e( x% @8 R/ ^4 C- p# z* |$ x2 U) \+ q! ]4 V% Z8 B
set-current-plot "Trends-of-Local-reputation"
' T. F7 b  v. M/ P# k! U0 ^0 l

4 a# G9 v6 X: |5 qset-plot-x-range 0 xmax
9 I1 }4 G, s, v' a& |

, J( @. J/ u' ~9 c* m" t( Zset-plot-y-range 0.0 ymax

6 ?3 ^, z& `9 `% J, l  v7 tend
/ q: m$ k9 Y! T$ h5 Q- {, c6 t$ F. a
to setup-plot2/ ^, g/ [# U, P5 Y- B. p3 e' m+ M
* o$ A& j" Z6 c5 G1 Y- t& o
set-current-plot "Trends-of-global-reputation"
0 z& n+ h8 P5 l' C) [, b9 q, ?
& U8 h- o$ {2 z
set-plot-x-range 0 xmax
, w4 k1 P" n4 L1 c4 d, P8 \

, X9 Y/ f; j8 R1 nset-plot-y-range 0.0 ymax
4 X9 `5 x* D/ E
end8 M( _# ?6 J7 Y! _8 @

3 D  F+ T0 c: p! e5 Sto setup-plot32 L! q4 G5 }% N: p/ h6 U
2 M2 [1 t0 I* `( @! |7 X' q8 [
set-current-plot "Trends-of-credibility"
$ W: I( k% P' q$ t5 ~+ e9 G

1 C/ S- ]$ ^$ }" I/ r( k% K! j$ Tset-plot-x-range 0 xmax
2 [! D. G) {7 x( O" i8 t
7 {( ^% l, J, u. O0 j' c9 j
set-plot-y-range 0.0 ymax
) z% a, _2 J/ U" B
end; k' ~! C4 z; {& I' [6 \; A
* h  P$ r  I' K, F& {
to do-plots+ J& h- m3 k" y/ G; C! K0 B/ @
set-current-plot "Trends-of-Local-reputation"
" G6 n2 R1 j5 z, u: Yset-current-plot-pen "Honest service"
  K/ }( r- d$ e3 P: y2 t2 Y# ~end
3 I# z! c# \, x5 G: p. s" Y  z( b. K7 ]0 Q0 K! |2 A1 K7 A7 `% A; }
[ 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.% X5 _- `+ n% I- N' G

& V9 ^, W; P. {1 k& m# i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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