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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:
' k$ I1 _8 V2 @/ K" w0 d. g" h1 @$ Bto do-business - O* y7 ^& K9 @$ k+ d( W" U" c3 L
rt random 360
1 d( x  r0 M' m fd 18 c6 [/ @: N, U& l3 q
ifelse(other turtles-here != nobody)[8 @. G! B* H0 {3 d9 ?1 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.( J" ]* k  Y0 s7 ?
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + c4 R, u4 X) s" p0 Q' q$ v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ t2 J8 T6 U4 X0 j9 y1 E5 Y+ i% G
   set [trade-record-one-len] of self length [trade-record-one] of self+ n2 b& Y/ ?7 k
   set trade-record-current( list (timer) (random money-upper-limit))$ E! |$ g3 E2 a: \6 F  b

" d' s! @. j( o- L2 |问题的提示如下:
& K8 F0 Y  e* U& J
9 Q2 e( D& r8 merror while turtle 50 running OF in procedure DO-BUSINESS# g8 X4 u7 z) @1 O/ @# D
  called by procedure GO8 t; t1 X: V+ b/ o1 ?
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
: b8 N1 I4 G9 t9 r) E9 e
(halted running of go)
  `* ~- R# `. I; H5 E+ ~# X4 ~
0 M+ G5 f! d( g: J6 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~~
2 Y1 P* N8 H. n' s) B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
7 }7 |# ]) C) [* v" Eglobals[
" t0 h5 F- H9 Cxmax
8 u+ q  W( V5 iymax
3 V; k) Z# C( a0 `( n" a' J+ o6 Aglobal-reputation-list
9 F$ ~) ?6 Z7 `1 `3 Q) v+ B+ e7 h, S& I; s6 f0 B1 L) a. f
;;
每一个turtle的全局声誉都存在此LIST
1 ~0 W0 T, X* _  m1 f0 q, z; U% Xcredibility-list$ r" r$ U: Z7 B$ O
;;
每一个turtle的评价可信度
; Q. g4 l% T" ihonest-service. M8 L4 }8 ?2 I5 O* J& N3 \3 K
unhonest-service5 s* `) Q( N7 L5 d, ^$ G' l
oscillation
" u1 w2 R) s8 ]1 J' T4 }3 z4 d5 C/ Orand-dynamic; g) I3 i/ `+ Z' t" A7 i3 X
]
" o* d$ ^1 }& t& s5 Z- n; t9 C* L, \% h6 E0 y4 B
turtles-own[
& T$ R" e" i' ttrade-record-all
/ q; c5 ~" H7 k;;a list of lists,
trade-record-one组成# O$ Q- m3 C; V- q' k3 \( ~& f
trade-record-one, i4 J9 a, A- r  M
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
7 z! Y6 [1 g! r) N
1 v6 f$ D3 D: T/ `) r- f;;[
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]]! y* A9 N0 M& E3 w4 ]' _/ `
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], V0 A8 m" I" I  w/ e$ 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list8 \* K! k) T# Q- b! {; e
neighbor-total4 H: p5 t4 Y3 y1 {3 v. D& ?
;;
记录该turtle的邻居节点的数目
+ h# f* \; F" |: z. j8 d3 O" z) c4 Utrade-time
1 k6 D0 {4 q1 Z- l- _;;
当前发生交易的turtle的交易时间
6 Z& h" u2 ~- x8 happraise-give
0 `9 ?- V$ G7 F! ^* G0 D1 t% h, v;;
当前发生交易时给出的评价
8 _) R6 N) F/ ^, N% p; k. Q; Bappraise-receive$ P! G/ ~1 H0 n0 \
;;
当前发生交易时收到的评价- N: F5 O. D3 C; r" n5 I
appraise-time  x7 n8 P' Y" g4 }' ~" g: }7 u
;;
当前发生交易时的评价时间8 s- T3 ?& g6 ^' f* e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉+ \% ]4 C7 F* _! P3 Z* G7 d
trade-times-total' [, Y, e: q( X
;;
与当前turtle的交易总次数
: t  H7 G5 ~% y8 u  G  N+ [, Otrade-money-total
" I' |4 G9 ]& };;
与当前turtle的交易总金额( I- Q( \+ U. K/ f! z7 A
local-reputation% S. O) L6 p% {! O2 ]3 T3 q1 \
global-reputation
( {$ T: ~4 R; w9 ]0 z- Zcredibility
! j( x- V1 p6 ^1 ]0 `;;
评价可信度,每次交易后都需要更新
5 k9 W, M: @! |9 Z$ wcredibility-all) n% |% `( q" j
;;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
1 G8 W: }! R8 c" n$ V* v
" a, z) I6 r8 z3 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0.55 ~, K- P4 Q+ `  |  z' R1 c# ]* {
credibility-one- k. Z0 `5 W* D) O
;;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
  j# p: \8 V; A. l, {6 s# _global-proportion( p5 \' y+ n+ q: M
customer1 b7 d; \1 O: E
customer-no
" C+ d7 q. m1 Y9 @3 Dtrust-ok9 P0 ]) G. s! ]4 W8 H
trade-record-one-len;;trade-record-one的长度
1 m. Y$ N7 o& ~0 y6 U]
" Z9 b3 o! Z9 ?3 h* T/ A4 D* P% h3 q$ n
;;setup procedure7 K4 k" k! }4 `, T3 H: o8 B7 w' a" o
1 A; i0 U: A6 N* I7 G
to setup% t& J+ }, w; v# O" ^
7 O1 N6 J" Z' q, z
ca
& f/ b9 `9 A- m$ [8 X
6 V$ o: J% `2 Z
initialize-settings

3 }% D% a; }9 f8 u2 J  i' J, E3 N5 d- B0 b
crt people [setup-turtles]

; C- l' D* O: Q1 L9 a  t
1 t% y+ O8 `& Xreset-timer
8 E$ K7 p" O' K- A5 `% i& c

6 O3 y- U! L+ K8 z& Dpoll-class
3 v3 e7 u2 V- N& a
1 a+ w( ]- c2 Q, n+ q
setup-plots
5 G6 S( |+ f% m6 `- _# I+ A# q, h

6 N) r/ ?& `7 t4 c  _, b- ido-plots
/ ?+ g( C( i0 R' k: n! Y4 d
end, _: R" U/ c' V3 |
2 g( j8 q7 A% ^  a
to initialize-settings
% R1 ?  x" d. s* [  I, _2 F& \6 Y
) d8 h& X% ^5 ], k4 d4 uset global-reputation-list []

0 @. x5 m' Y' j  O8 o# |& V% K$ r
, m$ f& N0 h8 wset credibility-list n-values people [0.5]

. F6 b$ A+ m0 p. z. P0 f- A5 z6 k
set honest-service 0
$ H+ X1 D! H7 i) e/ Y1 n4 u

2 |) v/ {. L" ^4 g1 f- bset unhonest-service 0
7 ?( J2 f  y9 y
7 }+ C) G* L2 S- i$ @' P( H# h
set oscillation 0
7 [, [2 P+ {# o  `$ d$ N( U

: M8 i% x) X" D) i. g- Lset rand-dynamic 0

, n8 J: @8 Q4 v5 ]! t' L! Q) |( Dend' _( k$ k" B* S: ]  u: Q% i0 n
' |& u) |3 Q, l# w( S# n
to setup-turtles 6 H  A$ s, U/ D
set shape "person"
2 l. V; T  t! Vsetxy random-xcor random-ycor  x7 a/ B1 L9 R' G0 }
set trade-record-one []! n( T1 a% P6 M7 a* I

3 Z# P9 @0 P) |set trade-record-all n-values people [(list (? + 1) 0 0)]
7 `! J  m7 x: i0 u7 g

- [; @4 l! U; t" p" Nset trade-record-current []5 z% S9 ], Z7 M$ t  Q
set credibility-receive []: A( H- y% o! o- i. w& o4 y- N
set local-reputation 0.5
- M$ k0 w$ e& G' yset neighbor-total 0% p3 q- x% Q# |1 G
set trade-times-total 0. m1 |" e, b' S$ ?5 W$ C, @7 X# L( X- l
set trade-money-total 0
8 V! U" R% f) x) F, ^( Y) @0 Aset customer nobody% a9 ^, f) }! J; a
set credibility-all n-values people [creat-credibility]
6 `  D8 v5 G0 z( ^! `: d% Nset credibility n-values people [-1]* c5 w, B& }5 ^- u6 `3 Q7 B
get-color$ b- p/ d8 W! K6 U

- Y) j6 G+ F' J; B- lend
% ^/ L  r0 o6 E& u& P/ h: L) F% q( v0 T  ^" w/ @
to-report creat-credibility+ W8 h9 z: Q8 r; \, `% c
report n-values people [0.5]" W; \0 P  l4 m! I2 I
end
& Z! r- ~* q# v+ ~- X# M+ z, c  B2 ]" k" f1 t8 Z, C/ H
to setup-plots7 s; N# C* f' Y% I8 X  K. _
+ r+ _, k8 c$ \4 \) `/ t# x( l
set xmax 30
- z6 `) c, ?& P  `2 ]+ l/ I8 C

5 _5 c& |! K) D. jset ymax 1.0
/ c, ]+ W  ?  P

3 ~# K# G8 f( o+ R% ~7 ~clear-all-plots
" H+ Y; T' b9 a& m0 H9 j

; ]5 }+ Q0 `( b" Asetup-plot1
8 ?. I+ i0 s$ E3 H; g; j6 \5 j# a( \2 d

3 D$ p( J& A# Csetup-plot2
" {, a8 B+ u1 x" N+ w) e
( j# @# Y. R  g
setup-plot3

9 [$ d3 F+ l( ^/ ~! send& P5 I8 D& C( L* i
: }3 T6 i5 M+ E! e' I+ F
;;run time procedures3 D, E- e, Z9 C+ J( e0 U
! S) k. q% a2 F5 ~
to go* N6 Y2 ^. B9 S3 @4 ~

# h1 I" d3 m% p( k- }: Y! hask turtles [do-business]
& i! U5 D5 u) G. b# c
end
) D+ j- p: |8 s) A6 B4 L
/ B- p$ r, z% l. `1 Mto do-business
( _, H( T- e5 u2 U+ z

9 ]$ E8 q; g# X8 r  |1 J7 m, [2 l
rt random 360

( V& A. m4 P' h( f( e  c  [# N. m% M: C& K9 Q# V# u* d
fd 1
- K2 ?) v& i7 d9 ?, ^

5 x; q2 j4 l0 }ifelse(other turtles-here != nobody)[

& Y8 Y: h  l9 S
6 O9 \  _) v1 x$ [set customer one-of other turtles-here
& f4 W1 `: }7 @5 u6 V3 Z# Q
5 j+ F: y3 |1 C" x6 Q
;; set [customer] of customer myself
8 C9 ~! U; s( Z# e+ T5 c

. s% f1 ~7 F1 s! V8 D  p" X( zset [trade-record-one] of self item (([who] of customer) - 1)
& g( P# w4 ~' E1 v* H[trade-record-all]of self# O# N' ~8 B  }0 l
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 v6 _) b( q: e( H

: w; f: F0 l$ ~set [trade-record-one] of customer item (([who] of self) - 1)
! J8 B4 l2 S, |# _2 [7 n% a[trade-record-all]of customer

- I8 k( g6 g4 \" f$ b& ]+ ]% I, m. V" Y: X/ Y# w
set [trade-record-one-len] of self length [trade-record-one] of self

* u( B7 A- I2 g8 {/ `
( M6 b. e4 r, [7 x1 Gset trade-record-current( list (timer) (random money-upper-limit))
0 I' h$ e6 [4 k/ U
' r5 `5 n) d$ }8 \$ g/ n* H) M7 F5 \
ask self [do-trust]
$ {5 C/ Z( k# P4 P8 f! M;;
先求ij的信任度
5 C7 p/ X- x$ j  f& _
- y- \5 F9 C: oif ([trust-ok] of self)
) C( p. o  A4 F( K7 D0 q6 h;;
根据ij的信任度来决定是否与j进行交易[: {0 ~% H- M) D2 U9 H
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! `8 f( v- }# ?6 j8 N; o: w: C, H2 O: h/ B* t+ N* M8 A
[

8 q- `! p. ?; m5 c( \1 [
4 x# v! X& R) b7 U  Wdo-trade

' X: U; O+ {; o6 l
7 \" p! I  h0 \update-credibility-ijl
" h9 p2 P# C% f7 }# O1 _/ z; [

% p9 R2 h0 G( C& i& dupdate-credibility-list
& |% {& `& F- L- q- V

  b3 |% g, C# `: ~7 i& Y
& z  Z! v3 ~! {update-global-reputation-list

8 J6 X5 E; J2 O, }( C# y2 }& D! w" t0 n: i6 Z- y
poll-class
4 S' R& I0 s+ X7 y; v9 `

2 f( n( `# c/ t; k0 h1 N' qget-color
/ `" g1 b) X) P5 h) I- N7 g5 _) b
7 [& L/ t$ ?' M0 e6 C6 K
]]( L. m+ `  U* m) z0 ^& q

9 _& R( o8 Q" H" p7 D% ^;;
如果所得的信任度满足条件,则进行交易1 Z4 }9 R) O6 @2 ?, q$ _- D
& D9 o: e7 f* k
[
9 \5 C- f8 i8 g- _. V
5 _# f- r. q" r1 D6 a
rt random 360

0 z4 C: \' ], |( }
& v- u+ ]) u# a( @1 E" vfd 1

# L2 D( r  Y4 a& }
: c$ m5 A, f% _1 T" z7 G]
- p2 V; f1 [3 t( n) q
/ P: |8 d0 a9 ?. y
end
3 N0 z, f3 O; W

9 F0 w* M% y( W: S* i. bto do-trust
' I$ Y5 d5 L5 o+ v# ?set trust-ok False# d1 n, f* @& q3 L: G9 ~( X8 f
* N1 A- z! Z, W- [
% U* P4 N/ T2 w: ~$ j- D% o
let max-trade-times 0- C& p3 M* D9 I+ z* Y) n
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 A* g3 E' a# V6 ~. `  ]let max-trade-money 0
7 j, o4 h+ l/ s5 G( L. T% Xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' G5 K+ U1 D: v( f
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 b' d8 `2 V9 b, X0 n
+ Y% ?  P& r, H3 |+ X, k7 ~

* C3 w- }/ b& Fget-global-proportion$ ~/ \: F- ^2 J) G+ n
let trust-value
( |' i/ l3 \' N, U4 slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
! Y- t( X: s" _
if(trust-value > trade-trust-value)
) p: t+ `; p: ~& f8 T/ _[set trust-ok true]9 f* r5 o9 G( s! t6 e
end
' \' e2 S( [  F7 X. t0 }, B/ L  {" T* U2 E! B$ F
to get-global-proportion
/ Y( s' X5 y; Wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 _( c/ J* A9 P' b* v[set global-proportion 0]
6 ^% x$ g( B# R: K[let i 0
4 J+ |1 T2 u- R4 zlet sum-money 00 w( B/ F& V! @
while[ i < people]+ ]% B3 K3 i: b# n7 k
[
- e! O- _% q' M' l4 Bif( length (item i; v- ~& e% X% n
[trade-record-all] of customer) > 3 )
# q$ k* N6 s5 p' w* y% f& r
[
& I1 O4 Z( W& l4 ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, N7 b' D2 J' o]
; E9 H' T0 K8 V# R# E$ ?  t& [; z]7 _* M0 `( @4 z* z: X* z, \4 W5 P# i
let j 0
% o5 X6 r0 W2 Y5 }+ V% Ylet note 0
9 l% J# K& D2 T1 Gwhile[ j < people]* v/ j, F# ?2 ^$ [6 t
[
4 C6 S9 Y1 g4 T8 sif( length (item i
% R/ \8 N6 Y5 ^! \$ k[trade-record-all] of customer) > 3 )

/ Q& H1 r; p; {6 n[
# U) C2 x/ c+ c, T8 n- O8 F! r1 fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: O7 `0 G8 o3 C  t5 }5 s[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. P9 ?( ]3 V" @7 z# j" W. c[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 f4 R. o" y) S# s- x0 \6 x5 R
]
$ U; P! w1 F& P+ R) f% R# S8 N]
5 e# q( v% e. n1 T0 dset global-proportion note/ ~8 ~1 w0 r# k8 T9 _0 l
]
0 ^9 }# O+ g$ i- y- n1 j! m+ B9 nend
3 C" d0 R! N, {
  b, L( _. y# }- E" ^! K" T- f9 k* bto do-trade, Z! \6 }: ^) N
;;
这个过程实际上是给双方作出评价的过程) u4 ^) h: T- X$ |5 F1 _
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# @* {  k0 t$ D7 g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& T; y$ z" v0 T+ n6 P& m0 p
set trade-record-current lput(timer) trade-record-current* ^% y" [  U. Z( g9 p; L( S% n
;;
评价时间
5 d3 Q6 h+ ^! I4 U  I( k+ fask myself [% U  ^' N9 k5 O& M* u
update-local-reputation
( J& N3 t2 ]; G, f' p6 L, \set trade-record-current lput([local-reputation] of myself) trade-record-current! S. G' |- j9 h8 O8 b9 M$ O- p
]
+ X5 d& S7 z6 {* k* U8 o" w8 F2 Q) ]set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
7 j: s6 o0 K8 S( U;;
将此次交易的记录加入到trade-record-one
/ w- P6 H. m# Q9 Rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 W% O- @5 t5 [
let note (item 2 trade-record-current )' I2 M7 V. C+ [( A7 b+ t
set trade-record-current+ i* G6 e8 p, R" d' Y% @# V
(replace-item 2 trade-record-current (item 3 trade-record-current))

( G; n* a8 s( o# aset trade-record-current
& X% p8 s; I: {& g# `(replace-item 3 trade-record-current note)" S/ j4 z' c  k9 J, x) ?- m# h3 b

  ]& C" X( s8 `8 @6 |

5 C7 L# f* {: g# ]5 S  gask customer [
. N+ k, b, B* a4 b! Nupdate-local-reputation6 [& u+ V! `7 O6 M$ Y; ]0 S
set trade-record-current
- Y8 z1 x3 n3 O6 P. S(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. v- l' [/ A# }$ R2 c6 r$ ?]3 B- E9 ^6 u& t1 {9 y. b) w! M
  |- V6 l4 Q3 Y0 ]5 g
' l( _: q& @  v9 i5 T
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# c1 s3 I& y/ A0 H" a( q+ B7 e
" m- T  H* T# P* ?( L
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 H& J. {  ?5 a( A9 ~( e;;
将此次交易的记录加入到customertrade-record-all
8 O3 U" }' a  K3 ]  w9 T' G- Vend
8 {: W+ }' O3 N, w" U5 e: |. A4 Q! P
8 e; [% N. S( B( kto update-local-reputation
1 n  T9 J; O9 `4 F3 g5 `set [trade-record-one-len] of myself length [trade-record-one] of myself$ W: W  i8 g- n; E, l/ K
( G, E& I, t: l5 \  X1 l9 q
$ q, k" L* S: X  M1 h0 K' L& p) g
;;if [trade-record-one-len] of myself > 3
( ]) T1 i( h  N9 h/ U3 Y3 o
update-neighbor-total
) V2 P. p7 i5 k3 N;;
更新邻居节点的数目,在此进行
! {7 K+ w5 J; N; klet i 3
/ A# z4 S0 o, Zlet sum-time 0
5 V, c+ _: p: T% O6 ~while[i < [trade-record-one-len] of myself]
- C5 L! D5 G$ P. R! R+ P' y) a8 ^[1 j+ c) i& E9 @( z4 G4 z4 A8 Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' `, b- q. I6 ~! F
set i6 p2 E8 `5 v5 G* Y0 F
( i + 1)

5 L. p  C, \+ s. w1 Q]5 `5 {  W6 t2 F4 T  D+ n
let j 3) W- }9 t1 M% Y$ z8 ^  j
let sum-money 0
# k! k& H( p7 E& x6 H/ t  Jwhile[j < [trade-record-one-len] of myself]
' ]" P" ]2 K5 V- O[
. l3 r4 }( v( }5 lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)6 H1 S1 M  b, e) D  E) w
set j# k" P3 D3 U+ \
( j + 1)

( [' P3 @3 @2 S+ k]
' f+ W( R0 U& L8 W5 L- qlet k 3- Y8 ]/ Q" V- E, {, b
let power 0- {" t4 v# a8 Q1 s1 X
let local 0. z3 ~; S  Z2 p) O" z! T" W
while [k <[trade-record-one-len] of myself]- V: o% u3 T- z0 L5 a
[) j2 ^# X, S- \
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) * w# {- C. I( V8 T- `  h" h! u
set k (k + 1)
+ V# \7 [) h/ N8 c! P9 w]. S) `  R2 ~1 L0 v' b" F0 N
set [local-reputation] of myself (local)0 [, H& l, x1 a8 R# I+ {* h
end1 ?8 r8 [- b7 g7 j/ X7 g

) K6 b7 X0 Y+ _) r2 r4 sto update-neighbor-total; M  z* d' f! O8 S/ @
4 |6 J  b3 o: @# O/ M: \% {7 ^5 u
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 C5 P. u2 y! e; D2 g! t( v2 @' N

% D- Q- V. G$ k$ v' F- ?2 K

; Z/ D. c7 q$ [2 B% F3 qend  O$ ]" E/ C$ J+ `" G2 A! R. n
. P- u# O! M6 p" c4 `  Y7 M! h
to update-credibility-ijl 0 q) F8 `* M! \% U
0 ?" d; h8 z; l9 R3 H, @" O( g8 w! A
;;
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。, V! |# }: U, X& O
let l 0
( U) H8 R# a8 ^* g$ @while[ l < people ]* @# P. F9 Y& v- r& c
;;
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# A* w3 @8 ]+ Q2 _
[
; C- m# Y6 y8 R6 G: ^1 x8 C# D4 Zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ a9 X' X6 w$ m0 p1 V  b, vif (trade-record-one-j-l-len > 3)
, U$ K: \( y8 d' H0 j7 q% e[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
( G8 S0 R5 a! q3 y$ Z! Ilet i 3
; y5 o, q3 ^8 N" P4 ulet sum-time 0
% A( s" Z- E& L+ mwhile[i < trade-record-one-len]
; k  q, }. @0 e1 r! T[; z8 y3 }3 G( Z; i2 q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ z' f+ k- Z5 y2 x, b- w- f) Aset i
; ?( t) d) T. e& }' p, u( i + 1)
9 s) G) a1 J. Y
]
( Q3 M0 |; L, U- m, Wlet credibility-i-j-l 0) j3 e+ g3 f) \& Y
;;i
评价(jjl的评价)+ `7 v* D+ y, e9 z
let j 3
: h* r0 D1 ^- o. @4 ^" elet k 4
  |2 }: g5 \$ d3 j9 |, qwhile[j < trade-record-one-len]$ t* f$ S1 L# g0 s
[8 Y$ p+ X6 \' ]4 A. Y
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
4 z& s7 T5 b3 j$ pset 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)
, V" N3 E9 ~7 h8 Q# _set j
1 z4 x& d! T6 h# W( j + 1)

5 K/ X" D  N# A7 b]
2 B* z( q4 O  a. ~1 s; Wset [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 ))8 |; K6 E3 C3 ~

0 y) q/ V- x0 K* P

1 ~: G; ]. g: klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 J* ~3 q7 `7 U$ y  G7 l3 |* ?* A
;;
及时更新il的评价质量的评价
' `8 f5 a$ }+ o9 f+ z& Oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  o/ y9 B8 e$ hset l (l + 1)( O; N+ W' F  }. S
]
# |* P+ G- E& g- u( s0 m+ c6 w% {+ Cend
8 I( U" L3 ^' G2 c- l9 X$ p7 P# }8 v2 Z; P3 t) \
to update-credibility-list5 U% b* S: H7 O/ j! n- r
let i 0! u# V( V3 E' B$ _! w! s$ @
while[i < people]4 d" D0 W4 _# A. T  @
[
3 v  n& l' E" ~7 F. l* i* g' R. ]% j4 hlet j 00 I: N- X7 `+ N4 D5 @8 Z* C5 V7 ^) k
let note 0
# F) R% h# _0 i4 J) N* X6 ]$ X+ Blet k 0  r0 m: n  m3 W; I9 I
;;
计作出过评价的邻居节点的数目
' _7 y* j9 K! V$ e/ u" l" ewhile[j < people]
' W9 D# ^$ H: R9 [6 \# z[
3 w- Z4 c  f& H3 h/ Kif (item j( [credibility] of turtle (i + 1)) != -1)2 D- w3 Q/ X- I' S: j5 z
;;
判断是否给本turtle的评价质量做出过评价的节点$ p; i/ W. [) O2 I( U/ [2 _
[set note (note + item j ([credibility]of turtle (i + 1))). X+ q! R5 n3 |2 |; Z# _
;;*(exp (-(people - 2)))/(people - 2))]
+ O5 S- y" k$ A) r: h
set k (k + 1)
) ^2 x( t# S" a* V- B( ?) d2 `]
9 r; j. l) u( _  t. y5 b  a( c/ Xset j (j + 1), {/ x& H. ^8 w! A! Z& ?
]
) V7 o9 F$ J+ C- W8 G# oset note (note *(exp (- (1 / k)))/ k)3 A- z# O: O% ^; K8 `
set credibility-list (replace-item i credibility-list note)
$ j! S6 m, Y- F2 J! }# }set i (i + 1)
( r( I% ]4 `2 s$ n$ t* m]3 {9 J/ z. |3 r# V
end% d( A8 a+ \- ~0 f9 A# |5 D9 F! J
8 U4 @$ O0 H6 m
to update-global-reputation-list
5 S2 j/ E1 G7 }5 _  N6 B/ alet j 0
) _5 y/ H: W% \5 owhile[j < people]3 v/ d! }3 w8 d6 s1 _
[5 {1 Z2 l. n) D
let new 08 r$ ^/ R: }$ L6 `* {# Z9 g$ R- b
;;
暂存新的一个全局声誉
/ k1 L3 k" j% Q/ T0 Plet i 0" A* ?( K$ i6 D8 A
let sum-money 0
' {# }+ O0 s5 n  j) i1 olet credibility-money 0$ s& v8 X+ M. C! X  K7 c( S
while [i < people]
8 V. a4 t  R  x* ]& |[
$ u7 p# h0 m& C, Kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! M1 i/ `+ u* p/ t+ \2 lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 i' G  w& W. u/ }set i (i + 1)0 `, Q/ W/ I! ^) @+ \9 O: ]! X
]
" B. B1 y3 |/ R: P0 |5 ylet k 0
( H4 L! V" v) C* r( p# _let new1 0) C9 s8 x7 |" J- J0 Z
while [k < people]
2 d5 {# w. f- w8 |8 B# a[
; [" R" z& Y$ eset 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)7 b- n' g  \7 J( ^
set k (k + 1)/ k$ O2 w8 M! r
], {7 g' ~  q& g& e: P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ G3 [( y5 r( b6 N0 q' T% b
set global-reputation-list (replace-item j global-reputation-list new)& s& h" N: s, d, [8 e
set j (j + 1)# ^; F9 W8 J  f
]& `8 k/ d/ U5 f# P$ a
end
8 }- Q; J: Y& k
& Y; a0 b, e* ^$ A; c+ j
; X7 z" ~5 w, C: p# z  p& I# ?, [! U. D) j6 X' \% `2 u
to get-color
4 a8 H( ~" B' @. F. t8 z5 e
1 ~0 u  D" y( b" \1 ~9 k, tset color blue

/ d/ ~! p8 D* V4 U( b4 V, bend
9 ~. B- q- o* s) N) e
: p3 H$ R8 Z( F; b" Jto poll-class
/ |- C+ r" D0 E6 S; [/ rend% h* M6 A9 R0 T9 D( s: f8 F

5 X: w  o1 Z" y1 {! V! qto setup-plot1
/ Q/ }! v/ u8 S$ e% `0 Y/ U
" {  L' C. K4 jset-current-plot "Trends-of-Local-reputation"

4 N' {" L. C- P  _  S+ f. t% ]0 b- c/ m/ k; ]
set-plot-x-range 0 xmax
# x& B2 y' T0 U1 K

  C2 r( A% M$ }. Cset-plot-y-range 0.0 ymax

3 Q' ]$ m4 u" I, H  O1 N: }5 Z" Rend
7 `) F. j. ^3 y0 y7 l
, O+ U7 o1 F' I+ oto setup-plot2
# _& w" Q0 f% B; s5 P% V" i4 W. X" _2 k
6 O4 Y, @& g; Nset-current-plot "Trends-of-global-reputation"
2 r3 ]) m4 I* h9 V6 E+ \7 A

8 c' ^. B+ Y7 i2 B! m) \- l2 }0 Uset-plot-x-range 0 xmax
/ X) Y6 q7 X3 B" G) I

* N1 t& a7 p8 g; i) fset-plot-y-range 0.0 ymax
8 P+ F$ E6 M5 q, C, O( |
end
  s1 M( `8 A- Q# @, e, k9 X  C9 q* l8 U7 z' t
to setup-plot3
( l) F: @3 m6 ?/ z/ z3 Y8 ]: W; B
& F/ I: T0 i! aset-current-plot "Trends-of-credibility"

2 ?0 E& i( j0 J' n8 d8 F! b
' M# v) L' p7 G8 l7 ^set-plot-x-range 0 xmax
# f+ h+ k) C' ?8 l
. l- e& @3 K6 u- r* ?3 S
set-plot-y-range 0.0 ymax

1 \+ j# c' F& z- o% X9 Oend
. L( E. H0 f* n' S& V  h. R3 l
& _, U6 N, I4 Z, d" t$ yto do-plots
9 f) Q) q: H! `set-current-plot "Trends-of-Local-reputation"# L. d. Y4 y  U8 d5 A! X$ j
set-current-plot-pen "Honest service": d) x! k& H' J
end% x4 F  w. @6 F% R1 n' }
! W0 m3 Q$ J6 z9 O4 a  ]; }5 }  D1 O
[ 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.
& O1 s! v" V8 v7 Z: \0 J1 b$ }( i9 M
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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