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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:6 _8 |% T3 ?1 I3 G
to do-business - h9 O. [/ b2 i' X4 b1 [
rt random 360+ S' f( K; c1 t+ ]0 d% ]
fd 1+ {! R9 z2 J- R; U  ]
ifelse(other turtles-here != nobody)[
* W2 l8 N8 C2 m   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.
5 I* J6 G6 E+ `# a4 m9 C/ [   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. l1 @1 A$ b+ R$ n# u. m, r( t   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
2 }! m5 x0 Q/ a4 v$ C   set [trade-record-one-len] of self length [trade-record-one] of self) o& o7 M6 I0 j2 @) r
   set trade-record-current( list (timer) (random money-upper-limit)), Y( q" i( l9 r. i9 ~

6 S  O. Z! R; J. x& `问题的提示如下:$ F1 f: y+ M# ~( H2 P. ]/ v; ?
1 ]" r1 [) c4 y! W( E
error while turtle 50 running OF in procedure DO-BUSINESS$ h( @( ]- a* t8 T7 H* l2 s
  called by procedure GO
, L& T3 ]3 m4 Q4 Z4 ?9 j% o2 R3 COF expected input to be a turtle agentset or turtle but got NOBODY instead.! L( o! j, \9 E9 _5 K3 ~
(halted running of go)
& p' A  S9 L. q4 \! H* [
2 s. K+ _# B5 m5 W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~~
  |, F! J2 O  q  u9 d. \* ]6 Z+ 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
( }8 m4 S+ S, N) sglobals[
- h/ D# c7 U9 K2 f, B: l+ a/ W9 Pxmax0 G3 u6 S6 |% R  X- S; z& L
ymax) Y1 R  D9 s4 F9 r
global-reputation-list- F8 d  @, l- z* h5 T
0 x) d4 R7 u. |. P
;;
每一个turtle的全局声誉都存在此LIST
- g4 H; M5 u9 a# acredibility-list# E* g) G  T% s3 u3 h
;;
每一个turtle的评价可信度+ z  i+ w& L) ]' P# ?$ U9 f6 x
honest-service& D) A5 \) Y9 J
unhonest-service
: Y+ z6 X: w9 |1 x4 K. v( {, coscillation! A0 S# t+ g5 }* ~: j% T% w
rand-dynamic
) k, v8 ^. z! Q4 Z+ []
; Z+ W! ^0 G, x' A) l+ k7 Y( z$ [7 F* `. x& k
turtles-own[2 i& u# i# l4 D$ g/ z" w4 ?
trade-record-all$ T+ h. G0 n7 c7 f
;;a list of lists,
trade-record-one组成+ @- ~: T# ]0 w" y% p
trade-record-one* Z0 F) J7 L  C: 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4 ?9 T5 u- m; R6 `; l' I
6 |# `8 g1 E3 U2 C/ S8 r
;;[
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]]( n* Z& A8 I! T
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]- r- W. l6 c9 ?, J+ s
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
% K3 S: s2 y$ G' Pneighbor-total
5 o, w) c& Z: j) k' a7 D3 G;;
记录该turtle的邻居节点的数目
- Y; C7 ?  e% D$ n! S  Gtrade-time
( N' ?  z; l( D# O;;
当前发生交易的turtle的交易时间7 a( ?) T6 y4 {9 j! z, y5 d3 y
appraise-give8 J) y5 R7 m* d8 ]7 E  r
;;
当前发生交易时给出的评价
( a1 M: T9 o5 i; j- |( B" r" wappraise-receive/ H: T& m0 f; h" ~6 R: c/ K4 ~
;;
当前发生交易时收到的评价  U' J+ E( M' `1 P2 n
appraise-time
; ?, A, {5 L. s, l; k;;
当前发生交易时的评价时间1 O4 n9 {! \  I9 |
local-reputation-now;;此次交易后相对于对方turtle的局部声誉, e- O5 A, @+ ~, Q( C0 j8 u5 T
trade-times-total
! I/ p4 u# Y, m( U' D" Q) z;;
与当前turtle的交易总次数4 e: W- O; ]( {: D3 \& l
trade-money-total8 t7 H. m/ [# P7 \
;;
与当前turtle的交易总金额: n% @% I0 R. ~- @- ^1 |  l4 f4 W
local-reputation
" F6 Q8 ?" V' S% k. t1 Qglobal-reputation  f+ M7 \* g: N( b4 s1 z1 E9 _+ C
credibility' t5 c* `; ~9 e9 A" H
;;
评价可信度,每次交易后都需要更新
7 C& l. b# \4 p. ncredibility-all
9 \- W9 l9 k/ M/ K8 ?;;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' ~' _' J1 V; t% O3 j  t% z3 @+ I

+ l$ D1 v& s/ ?1 {7 M2 z;;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
6 M3 O# x7 I( ecredibility-one0 W0 ^* L" R4 t6 S) t8 |9 _/ N
;;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
9 k) S* U* ?3 T& N+ l" lglobal-proportion
2 q+ Q0 m* o6 a2 F8 |- ]customer
8 y' s; t. W5 hcustomer-no6 d+ O  y  S/ [
trust-ok% P) Q4 N9 x' m! _* d" w* m
trade-record-one-len;;trade-record-one的长度
% U. E) v& A  v]9 c7 h! _# I, W4 _% `
" Q3 [0 o+ U! n6 @0 }, |9 }
;;setup procedure
% T( b4 U2 O% z4 G. h/ K! T* ?/ T  k9 N( K7 g- A! Q
to setup) E; p! ^# m9 }# m6 {3 Z& G, _
1 j, [% Z/ k) F. E+ N# ~
ca

- @$ K! T/ B; Z! e
6 V* S+ }6 c, y4 Y3 ~initialize-settings
  p( Q% G8 s! u1 m1 m
: R" r# G5 E0 k( N7 M( ^
crt people [setup-turtles]
2 m: k+ b  }* p" S
$ ~9 l7 x, V  p$ M4 j) _9 U' }
reset-timer

% y* q! H& D8 T3 ?
; r4 {) m$ g- A* |/ b2 {3 Rpoll-class

. S% T# Y( ^. `: O
& `, A: H- Q2 r5 R* @% {* ~+ Isetup-plots
) N3 g& X' H( u2 J0 {
! [9 E( k6 r; u, `: v
do-plots
, l+ t1 P/ X! w1 P* _( V  q! ~, K' S
end
8 j$ l6 K( A5 {
4 Q! i% R9 w2 @" n3 [4 @to initialize-settings" I/ J7 ~- E3 C  l6 l' G
4 ?$ f2 ]1 c1 T) t; a5 S
set global-reputation-list []

' o" _& i' I: M) f
2 x  j7 R6 B2 e; p  pset credibility-list n-values people [0.5]

+ x* w  x5 \  m0 g- Q2 o7 F: c/ X/ s
set honest-service 0

* \1 u0 F" o0 A$ H& S% F* N- B  r, W4 \) O, N
set unhonest-service 0

8 i& ~- s8 ~. A$ ^
: R/ @+ ^0 @, E$ c9 tset oscillation 0
2 ]- ?4 }/ U! n" t2 y2 C5 a7 }

0 r# @4 C$ m# ~: dset rand-dynamic 0

3 K  L- J- ], k5 ~* n- C  yend
" c9 a, n2 q7 i; M5 ^/ G2 y
7 `4 H* }8 P" [. W  ~% n( H: i# T6 Vto setup-turtles
0 k' V% q; J. d( o! V' @3 ]set shape "person"
% {% X6 \. [$ ]# Esetxy random-xcor random-ycor
* z& W2 j+ W, |7 K7 c5 o* H3 k9 \set trade-record-one []
9 I1 R4 Y1 |! r* a
+ R: n+ S! z& [0 h! _( Y
set trade-record-all n-values people [(list (? + 1) 0 0)]
, O7 m$ o% @( `% x, o, T" }" C; S

% \- J/ I$ T# X; Q! s7 |set trade-record-current []; \1 i; A1 m3 v5 R) y; ]) v  W
set credibility-receive []
- S% ?. [+ H# i' X+ K! Nset local-reputation 0.5
: Y; R* s9 N/ ^set neighbor-total 0" Q+ N7 z8 C6 Q, x( m3 k5 |
set trade-times-total 0
+ M% u. p6 [: K. q, V7 Dset trade-money-total 0
1 `: I* P9 m$ l5 Y/ b7 }5 d+ W4 Qset customer nobody* }" L+ F6 c4 @5 ~5 E7 k
set credibility-all n-values people [creat-credibility]
3 a( w2 I" O# f* |: P' Mset credibility n-values people [-1]3 n, a6 }) k! H5 P% a
get-color( `9 B0 q7 ^- ^/ I
% z  `& E) t. Y9 p0 M( [
end
/ U. f4 P* `* I! R1 w0 H+ S! O" B7 N0 F7 c0 X) I6 B* X
to-report creat-credibility% l8 F* x, I% j7 I
report n-values people [0.5]( E  R$ J' ]% G# w
end
& G# n* O1 _6 M$ C. b  d8 Q8 ~* h$ H( ?% j' F/ V
to setup-plots
  K" u" o1 _& B; N2 J3 {/ N
+ B% K0 M% s  }3 d5 Qset xmax 30

- p5 y5 S5 O( h/ c, N$ f" i4 j  N# ]1 B  ^
set ymax 1.0

/ ]! m/ M3 x# x  q% S+ E& W: |  X' N. {2 h) o' a4 D
clear-all-plots
( d6 @( R, G2 R8 V/ R! w8 L* a

* z7 O! |2 e' ~( xsetup-plot1

& i+ C, o" n" c9 @
/ `5 h- O4 X7 d1 s6 Asetup-plot2
3 O4 |" }  B/ L% U& t( n0 j
3 l! S8 S4 M. v
setup-plot3

2 h& b. P# B- m/ W& q6 Eend
: z: _! O2 O& m$ M! b: H* g5 G* Y/ l0 ]$ G/ [1 l- e! w& L
;;run time procedures5 J# L6 b9 P5 r2 p& F: _
1 e& I% n1 C/ C/ D, A* X/ ?
to go* P2 p0 U( o" }! v4 _

& y9 U; N! I0 Jask turtles [do-business]
: U# S; h7 l0 N9 [" D8 m$ f- z
end$ X( C, ?$ q) v3 b7 c

2 B0 S( z  C" s7 _# Y# Y  jto do-business 9 D3 {2 k3 x( }

4 P- ?9 z4 q5 e1 I* M3 a! |) l3 d  r: _0 h. \! n
rt random 360

+ p8 E3 n# C6 f6 F4 J* g- ?& B! u/ z" ~7 ]
fd 1
% o9 ^/ p& d) l# _/ {& ?9 Q

9 }! @% V% ~3 d' bifelse(other turtles-here != nobody)[
% S4 B7 h2 r/ i( B8 f
. L3 H* g8 M/ t. [' h4 S# R
set customer one-of other turtles-here

/ o3 |. g4 w* O+ Z2 A
2 K6 N3 @# q0 b8 t;; set [customer] of customer myself

% z$ o; E9 c. w+ Y/ f6 U/ I! _/ C, |% a3 ?9 {0 J. X1 C
set [trade-record-one] of self item (([who] of customer) - 1)2 i1 {8 R- R% `" i1 L7 h
[trade-record-all]of self; a- D, J5 G! g1 J+ ?
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- }# \" F' L4 w) u' `
( Q8 l3 a8 }* }/ ^/ wset [trade-record-one] of customer item (([who] of self) - 1)
, y* k# b$ E/ `; b[trade-record-all]of customer

$ C+ {0 Y: c( u0 Y  G+ T4 G6 H7 q
set [trade-record-one-len] of self length [trade-record-one] of self
) i) i$ s3 Z: J! j, M
7 u3 N, e; Q9 x" S
set trade-record-current( list (timer) (random money-upper-limit))

9 ?3 I$ R! n9 k; t4 y  V( U' Y. z) y
- [! N, {1 f1 c3 z/ @0 x; h$ Eask self [do-trust]
+ g$ ^. {0 Y/ r1 `5 r;;
先求ij的信任度
" u& M. D- b+ Y* f
/ S& b. G* @* R, `if ([trust-ok] of self)
4 B% f/ l% x+ t5 z8 I;;
根据ij的信任度来决定是否与j进行交易[
4 r% R$ s( v3 Mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 N( `! w9 E" @7 D5 o

! x8 ^7 [# D4 y7 @: Q1 r2 C# q[

" U+ b+ R" \$ g9 r  e
2 J3 j5 K1 C. M; mdo-trade

* p/ O! L# j4 l: n: r' l7 r# E8 w  j* h1 D5 E4 h
update-credibility-ijl
& w5 x( V: [$ I
2 O1 V0 a+ M" q7 k- j3 ~) P
update-credibility-list8 O4 z3 v+ G# `  A: Z5 k, n
4 Z8 s' N" |1 R
0 E/ t- X0 \8 o& s# P
update-global-reputation-list

- v7 ^$ L- I* A& B3 Z: @8 b- E# c8 ?9 z$ b8 W. S$ P
poll-class
# w* y5 C6 W7 q5 K: J/ Y
- P$ H% j( e- p7 {! w! Y1 r. W
get-color
8 h3 ?6 \# u% x
& _5 {( I0 ^! y& K
]]  g0 B0 d* K& e9 |+ U( O3 z

0 P8 F3 f' M' \2 G4 I;;
如果所得的信任度满足条件,则进行交易9 H; h, ^  ~% z5 ~7 g0 A* z

1 f- }' S+ t5 B[

# [7 L" D/ C3 v3 W. P/ i) x; ~/ [+ q% j4 `2 Z. j4 Y9 U2 j
rt random 360
& }/ c  G* Y6 L9 K

& R5 d7 X6 K( U) H" lfd 1
  \6 O4 r8 c9 |# H/ U. s
0 r( Z4 ?1 M/ E$ }  K
]
4 Q. N0 p0 K) k& a& n- Z% E
2 x$ l8 e/ M% T3 D" f5 @
end
4 e4 d9 d8 X6 @: A- _8 t% s+ f$ ~
+ ~0 [) S# d1 Z& H1 X9 Z0 D1 f
to do-trust , }& V6 X% G# H
set trust-ok False# u( ]. g+ L! @3 S
8 J) C. J  _" V- C6 J* Z
8 t  e) h1 n' w! s6 `
let max-trade-times 03 B3 V  U7 J* E6 n+ d/ N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 h: L2 a$ ]- y2 ?5 ?: K0 Q
let max-trade-money 0
: o( o( |& U) Y. Qforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. h7 j, P& q/ [6 b* D/ A9 @let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& s' x  [) D4 N
( `, c. F! `9 [0 N. h
8 [- x# O0 v% h- E! x
get-global-proportion$ o/ V+ F) ^8 U
let trust-value
; R+ r- _; E  y+ c/ 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)
7 S! C7 W6 B; q* {
if(trust-value > trade-trust-value)) b/ k7 h3 Z6 |7 J! {/ F5 _) b
[set trust-ok true]
' e# [1 _1 F) r! A& q2 l$ k. O/ bend& c/ w# i+ t7 w% t9 H' e/ y6 G2 P5 d
7 b. M& H3 \! n( q* J3 |8 a
to get-global-proportion
2 j0 u5 A3 x  D6 u( aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)) v. d1 c! e/ ~/ L# Z1 H) b
[set global-proportion 0]
5 J/ I; h1 N+ n[let i 08 j; \5 G" L2 k. U7 V
let sum-money 0. k, I3 Z7 J$ B* u- a& s
while[ i < people]
5 o5 l0 c3 ?$ Y" i! Y( n[3 _$ ?1 H( |! I& i9 |
if( length (item i
5 T5 P3 I# g9 b" ~" W% n7 d[trade-record-all] of customer) > 3 )
9 V& N) I( h: H, Q. J6 l; N
[. @( [* }; x+ X( B! G
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% P2 M# ^5 S" r]
6 t6 b% y5 B% m8 Y; @]2 |) @) l2 a- ?0 `. }; I0 G
let j 0) ^+ o8 y$ _$ b# }* y+ r, [
let note 0  j5 r8 K5 n! E3 S& v+ m) X2 j/ H
while[ j < people]
7 Z- g7 O( E+ V5 B0 ?$ K3 j[
( O) f5 J# I9 N  T- O$ O  fif( length (item i
9 J9 S8 R$ H' W0 a  k[trade-record-all] of customer) > 3 )
, W# Q5 M& |0 T5 W: x* W0 [
[4 ^* Z# ^. ~0 B& J" X
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* h& N' j: ~  F
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% n' S+ A2 `& ], d* W+ g
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 x( ]/ [: ?2 n% q3 J. ]]
) H( ~# U, L" I]
) l; s. g* }6 Yset global-proportion note
+ L8 [& K$ V, o& e]8 ]6 z8 K1 X* ^* @. q
end2 f  ~& O4 F& b
0 B5 ]3 W8 \! ^" M- A
to do-trade
  m* J. ^, H8 m% E" k;;
这个过程实际上是给双方作出评价的过程
: A/ M2 n; F- j# @( L: @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* [, f6 z5 J+ d" I3 @5 c0 {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 G, t$ ^0 e! {# ]" L# P+ i) J
set trade-record-current lput(timer) trade-record-current) R0 `1 l0 `! c6 |9 }
;;
评价时间
" X! V" h0 q. J% G/ r# ?0 Uask myself [
2 c% R& L. J" mupdate-local-reputation! d$ M* V9 a& X; |/ w
set trade-record-current lput([local-reputation] of myself) trade-record-current; J" n$ d9 }2 \+ y6 M+ z2 P5 |
]& u8 x+ K  n% a! [
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 V" F" A! p: z9 I2 d;;
将此次交易的记录加入到trade-record-one/ G! e3 j5 s9 o5 P: g. h" P$ D4 X
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% H9 F  j8 G. \" `9 l
let note (item 2 trade-record-current )
& ?) {1 u$ [& v4 g7 n! F6 Tset trade-record-current
& }* f. C; k7 H0 f" d(replace-item 2 trade-record-current (item 3 trade-record-current))
9 g5 g* ?5 B, _2 u& v, C7 x' X5 p
set trade-record-current! T& s7 H+ U, }4 `! L5 D
(replace-item 3 trade-record-current note)
& F/ r7 v4 e5 R+ g
* Y  F/ |/ y; t
. W3 {. D- P4 O$ j7 c1 Y5 a
ask customer [5 V0 |% u$ {, o: k4 d( U- P+ j
update-local-reputation/ {+ [1 e% V7 R5 w
set trade-record-current
+ i6 S( u& }0 P/ k* @(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 T# E' P3 D8 F9 M]
) }8 D9 U. o4 X* U9 g% f* M! T4 B6 K' \" O8 U% O# s1 {( O& _& C- A. W+ e
0 g% S& Q  n) N+ O) @
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 X, k6 @* V/ A( W; o! M+ Q" _8 w
  G' L( l) C+ F' a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# v: l( N9 U* m' l& L
;;
将此次交易的记录加入到customertrade-record-all
5 }% U( D4 A/ q5 l0 j# nend  s  z2 D# K( J$ r2 G) ?, E8 H
) Y  p+ Z& w* g, D( E% @$ j' q
to update-local-reputation
3 G* n* [3 a5 C2 y/ Z, Bset [trade-record-one-len] of myself length [trade-record-one] of myself
2 o9 A) a8 d- t2 K0 t7 O1 G, @) h8 U# P- d/ T# V: l

# b) B! C6 h# z- u% j;;if [trade-record-one-len] of myself > 3

, w4 |8 I! D) @9 ?: b  h: Uupdate-neighbor-total6 l4 j% y7 p6 H$ Y
;;
更新邻居节点的数目,在此进行
- U2 ?- o. w! w6 blet i 3& p$ G- {& ~; Y
let sum-time 0
/ t0 K4 B5 P& Y$ ~1 Bwhile[i < [trade-record-one-len] of myself]& y5 M" P3 u# Q$ ~$ I9 f( S
[0 s) V# z- f7 J% U! D
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); s5 p# m* a# v& ~$ E# p) Z6 _
set i- V( Z7 e* j) G5 {  g
( i + 1)
" F1 C& r' b, H$ k* x
]
/ J. y- n$ {- Slet j 3" g9 |" s! }" h% g4 F0 E
let sum-money 0& }4 \* P5 R$ [) i
while[j < [trade-record-one-len] of myself]+ B# y6 H# |9 [0 Y$ K0 G
[
0 T) _$ ^2 D" ?* nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)& U. G, \1 ?* i+ p; K3 i& l
set j
$ r$ f6 R. B- R- {( j + 1)
+ W4 \  ]9 {4 q
]
2 G5 [9 i! ~- Q" A; Y7 G- y; t0 ~, ilet k 3+ b5 I9 E8 y5 p2 g' A+ O: W
let power 0. ?3 T' D9 E5 ]8 O; L+ @
let local 02 i  H. S& H  d! _( G* j1 L
while [k <[trade-record-one-len] of myself]
3 ]( p: M" |0 X% f5 H[* g7 I: @4 J8 e# I/ m
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) ; K8 q. n" y8 A0 D1 O$ ?
set k (k + 1), x9 t% L" _! W2 G/ L. B4 ]
]% a, A4 S  o% V, p5 X2 C
set [local-reputation] of myself (local)
7 t  K( D: X7 y7 g0 }" nend
% Q* c. E- F3 I; s) _
  O0 T( X  E% jto update-neighbor-total. K  q3 |# _5 k( F1 B8 K$ B; Y7 e- R
% \% t( v" R2 x( q' d( U
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! O' S# q" n/ j8 N: b# D
: _1 k2 g0 L+ H

) c7 b, M. D. Y4 Xend4 \% k; W6 h! l8 h9 z4 M' }: C: B$ X
& M# ^5 @2 [4 j9 K/ f& ]% v: H
to update-credibility-ijl
. p  g! _* ]' H+ s+ A& v* E( g+ L9 C& Y* z0 D) 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。6 e1 O3 ^( U( }
let l 0
4 P- F3 r" ?* |: o: k- [8 }4 v9 bwhile[ l < people ]: b& N- K! k, n: A: I0 I& p
;;
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1 O5 L6 N3 O/ |& L& o. R, P
[& U& g- t3 X3 K: N5 G+ o
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 Q( z) Q1 |& h/ T6 D/ `
if (trade-record-one-j-l-len > 3), T1 F! Q: `2 m* p& Q$ U
[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
( e, L  R, L& B' ~) wlet i 3
8 X5 T' X5 h$ b4 E# W* [. i  E1 {5 `3 blet sum-time 0
) ]# `# t8 z# c6 j; J0 S% ?while[i < trade-record-one-len]
1 o: {  b9 x& V  G; r[9 z$ R# s* r, Z" M) F  Y
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& G2 S5 s/ G! }) ?% [8 mset i
8 B1 m2 c, l+ Q5 T: `# H8 a# C( i + 1)
% ~, l/ z, ]2 {/ h9 C3 V
]
4 O0 s/ A7 k1 Jlet credibility-i-j-l 0' A  F% ]! N1 B% W" s( M6 b6 y
;;i
评价(jjl的评价)7 I# g. q, ^# t0 W8 p
let j 3
( A0 o* p! g  k3 q$ f" h! Y- o$ Y1 Q/ Wlet k 4
/ C* M& o, T9 o8 T7 ]7 Q7 wwhile[j < trade-record-one-len]) L1 [9 `0 `  v# B) b0 z
[
% I! Z" T- ^; t5 l7 s. }3 S+ o- Iwhile [((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
4 `, t5 {. \* w3 @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+ ~3 G2 m5 Y' ^, E5 o, g& wset j. p1 W9 ?6 X2 `# ?2 a; r& y: K
( j + 1)

3 [8 w7 @7 J+ r1 k3 E1 Z; y0 @]- m- d4 }+ E! d& f5 F0 Q5 |# j6 G
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 ))
0 B; F! E& |8 b! Z, Z5 y
6 g$ E. _  y6 K& g$ |# v

& ?7 U' G) E3 Klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 u/ N: D' f; j- }/ A4 g+ u+ @;;
及时更新il的评价质量的评价
% r8 `, P" y/ vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; R8 b- K- L( f& J( U7 j9 Uset l (l + 1)2 C& v2 N. s5 U
]  N, u$ _( a( y, g; T. \
end! \. [( F- T- N# k4 [: s7 Z
( }2 F7 h9 W% `6 K6 X' C
to update-credibility-list
3 X# s" g7 Q$ s5 b# n  Tlet i 0
) }0 A9 c9 U9 ~( z6 c% ?( t: lwhile[i < people]
  M  h$ N+ Z1 Z- ~& ?[
- f6 X) s2 L5 Y) a1 `& [) Olet j 0
; ?/ \% U/ X5 k8 b( v# Flet note 0, X5 i8 f: u4 Z0 l+ d4 Z
let k 0
$ w* p* H6 w$ b: Z$ P% M% f9 K;;
计作出过评价的邻居节点的数目
7 P* k* s+ V1 D" j$ N7 \' r4 |while[j < people]
9 g. d- d* c; F[
; R( O& _# w8 U7 }. S8 ~9 mif (item j( [credibility] of turtle (i + 1)) != -1)
6 ~' I  T1 L  H9 T: z;;
判断是否给本turtle的评价质量做出过评价的节点
7 `; @' v4 l' U' h7 V4 M3 {[set note (note + item j ([credibility]of turtle (i + 1))). b, e! U" ?1 r+ F) Q+ I0 y& b
;;*(exp (-(people - 2)))/(people - 2))]

( @3 H: f! z* I( l- U0 jset k (k + 1)  F0 V: r$ i8 z% v3 Z
]) d1 _& v! A% C( e6 R" @6 ]
set j (j + 1): C" X& h' c2 R. K
]( ?! _. h* s, \/ G8 j7 t! {/ C5 U
set note (note *(exp (- (1 / k)))/ k)
+ g+ u' b% x' \set credibility-list (replace-item i credibility-list note)
$ B% \8 R( i: Hset i (i + 1)
# A1 [" q8 l  v! k]1 N2 j1 V. G: @. P5 @
end
- U  z" C% C  X$ d, t$ ^9 e# R3 W8 Q6 \( z9 b3 d  ]
to update-global-reputation-list; k4 ^7 d. b, W7 z/ L6 |7 K
let j 0
# w- k. `2 \; t# ~' Iwhile[j < people]
, }! [/ [: L1 ~* K[4 _4 f" ]9 x5 V/ o' g6 Z
let new 0/ {  L4 F# ?% b6 i! J
;;
暂存新的一个全局声誉$ P7 B& K0 B$ }& b  e! j' u& L1 ~
let i 0
# J' y4 e( y1 I4 N! vlet sum-money 0
, p% Z$ [/ G( F8 T1 clet credibility-money 0
2 H( q$ O/ u5 L  k) f1 f9 Cwhile [i < people]
$ _( X( d2 @6 l  ^) X[' E, ^7 B) K" l0 d3 [: O
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 r1 G- k3 O) l: o
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ n" L( w! G; [. Q, j/ i3 r0 w& ~
set i (i + 1)
1 k# x5 x1 k1 G4 a]8 U: ]4 E! u8 U
let k 05 W; J' R" H6 T1 G
let new1 0, I% ]0 A+ z' W) h3 m7 {
while [k < people]
; z$ @; n& P" Z% [. ]' F6 R- O[
& A, q: {  S) w2 T5 f( `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)
0 D" D* j7 Y; B4 i6 f) O* vset k (k + 1)
2 d. X9 b0 I. j' e9 k9 M], a% T' A/ Z9 f) ?' G- `
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 X+ k  ^: S! t5 v. ]; L
set global-reputation-list (replace-item j global-reputation-list new)
* @. S# H9 R& }% k3 |+ k" qset j (j + 1); ~& d5 ]0 x5 ]) }( M
]8 f2 S7 K+ E0 Q2 [: z) ?* y' |* p6 Y
end
9 H1 N! z% O* M7 @, }5 m
; Z3 [& F+ c) l8 ^% b$ d/ x1 k- u8 f

, P: i/ q8 m4 h" ], M* xto get-color
7 O# N, x" N6 b) y6 y4 U3 M. q% }: V& r+ q& d
set color blue

5 g, }% M' y3 c: b% Kend" I  k0 h% S$ n* C1 F" Z5 z% i
7 _+ D0 q5 C- \' b6 ]& D
to poll-class9 B# [  H9 p$ p% x/ h  V  i* i* Q
end% @8 A, r0 ]- @2 e1 s/ t

# `$ k/ W; d6 G% kto setup-plot11 j# f/ n: [7 q% H: d
0 {; \1 x. G- l4 v$ G+ C
set-current-plot "Trends-of-Local-reputation"

; Y. ]1 v' X% m6 N  J* J# n+ ^2 D5 Z" T' c9 [/ Z: z
set-plot-x-range 0 xmax
8 C) h! d1 I. T: u/ e& O/ }" N

' F9 e  S. _- ]" M3 T' f/ M( b5 fset-plot-y-range 0.0 ymax
% g+ k* x% c; u8 y, [
end  [: N3 n. y8 ^) Z
0 D2 f6 Y  E7 H, w5 }6 d
to setup-plot2, c, \2 N, o- f" Y' e: D' j
/ Y! j/ @! S% i( {2 n
set-current-plot "Trends-of-global-reputation"

9 }" `8 V- ?" f3 z8 n
: _1 ^3 ~+ T" [" C( b! ]set-plot-x-range 0 xmax
! b5 U" f  U" W( Y, j

) W1 b7 B7 N: `6 V/ B& j- D7 Sset-plot-y-range 0.0 ymax
0 v& m+ o7 E" _* X
end
$ E2 `. a9 {# y/ u
5 t% z# F; ?; C9 [to setup-plot37 D" n+ Z$ o" C

0 U! c6 P, P7 h# n. _8 z" h/ [9 jset-current-plot "Trends-of-credibility"

$ {8 A% L  v. {0 I: D7 \3 }/ R8 J
8 S' {; R- l2 L$ eset-plot-x-range 0 xmax
9 G6 r% {* |# X

* q$ }, N" s3 T; C2 ~9 c# p% [2 Qset-plot-y-range 0.0 ymax

, V% _8 W* U6 Lend7 d( [* o1 @6 n) G
9 ]) z6 ]% b7 E; r
to do-plots
& o$ ]0 O; ?) u/ ?set-current-plot "Trends-of-Local-reputation"
# u! ^8 z! c7 |# J; Vset-current-plot-pen "Honest service"7 U& l0 a- V5 P2 d. T
end
, E: ^8 D) R/ H- D; Y( u+ a# ^. y2 F6 ^
[ 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.
+ _' b$ i- Q% T6 l( N
9 ^& Y; p5 _9 ^) n; J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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