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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:5 `9 b  w) ?1 w8 g  L
to do-business
' O( o: Y5 ~; j& d6 Y rt random 360% Y- B) _- n) P; L. X
fd 10 R3 y2 ~! {( E/ o% [; f/ ?
ifelse(other turtles-here != nobody)[" C! B  U+ z1 c3 L
   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.
. X) N/ W2 e( q" e$ Y: {7 F, Y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 V# [( f+ o4 Z! _
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 z% j. c- E, s' H8 U) n" D   set [trade-record-one-len] of self length [trade-record-one] of self# f. t3 [. v) _- V) F4 Q/ c
   set trade-record-current( list (timer) (random money-upper-limit))
1 `0 {( U0 I- m+ h# I3 u2 i! U
* h8 }4 b; j2 V, J问题的提示如下:% \# G# a7 u7 ~' [6 o3 q3 N( D

( g# N2 R) q+ ?# r# [error while turtle 50 running OF in procedure DO-BUSINESS) O) f, |. Y2 [
  called by procedure GO& a$ B6 o/ o2 M$ x# f
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
: g1 h! e: J2 J
(halted running of go)
' n9 Y) }$ R3 w8 G. r- J1 j  y: v' ?' g4 N7 c0 U" U
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~~" h$ [) U& n2 k- s6 k2 G! l  G
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: y, I5 O0 g, z, Q! V
globals[
( E/ [1 [# x& a5 L) n3 ^5 Dxmax& B; Q& E- v+ y0 `1 B8 U
ymax
2 E$ C, @. k8 F- H# ^global-reputation-list' R0 ]7 M/ f0 K9 s. g
' j: s9 \# O/ f) X: k4 d
;;
每一个turtle的全局声誉都存在此LIST+ M8 j( f1 Q8 ^9 v; x4 T9 Q; Z9 e2 g
credibility-list
  e5 I$ q, u; N4 h, w;;
每一个turtle的评价可信度4 W! |# P8 p/ S9 x% B
honest-service. [) {: n  R# \7 J3 g
unhonest-service
6 |) d1 H3 M; r2 p/ V7 n" zoscillation6 C. [4 Y  A7 }/ b$ j
rand-dynamic
+ Z3 q7 \0 D  z, \1 V, C( v], q- v. h& n3 U9 {# ~  A

0 {, _2 M! a" W1 f  r4 E7 P* Dturtles-own[
' q' Y1 L; N4 g% X# r' ^, etrade-record-all; t. C' g1 C& |! j; `' I
;;a list of lists,
trade-record-one组成
: J" s5 D( Y1 m6 i3 O  E' |trade-record-one+ F- u" g$ E- w( t, }
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* w% N8 D7 ^4 A( u3 }& ~
9 \3 }3 w5 ?! i: q6 ^* c' 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]]4 ~9 b: x0 v; z. a) B5 J" s
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]# p" m( G% s1 _. |. c7 C5 E9 _7 b3 I
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
7 Y7 Z1 C; E1 w$ K% i1 qneighbor-total7 w& Y# T, V% }3 R
;;
记录该turtle的邻居节点的数目. ?* d" y* O5 K  D: n9 B9 @: |
trade-time
) k4 y0 n, m* e( ^6 [;;
当前发生交易的turtle的交易时间2 P. Z" i4 r4 [% O9 c
appraise-give
# T2 K" S) y( @;;
当前发生交易时给出的评价7 w. ~: D4 [2 k3 i% B7 q# t  n
appraise-receive
7 k8 F, V9 y2 h1 l( @;;
当前发生交易时收到的评价
0 o9 Z) G7 N/ l; Y9 F  qappraise-time
! `! q3 q0 m9 i2 ~6 }. y7 T;;
当前发生交易时的评价时间1 c* h8 x+ g6 }' J7 N! h
local-reputation-now;;此次交易后相对于对方turtle的局部声誉6 E" U0 ~4 f7 O6 g
trade-times-total
6 C& t' n; f. T6 b2 N# j3 L. M;;
与当前turtle的交易总次数3 I; y7 Z  b' ]6 e, `9 _+ |
trade-money-total
3 O: \+ S' i) q# d6 L;;
与当前turtle的交易总金额1 a) b2 f" C& w9 T; J% p
local-reputation3 _8 b" `8 C3 `* Y3 \. P
global-reputation1 w2 u# n" ]+ `, N' E
credibility: U8 {- l3 P" r( c. j
;;
评价可信度,每次交易后都需要更新
" P# m: `' T+ ?( Ocredibility-all4 a; S" L% z! e/ a: Y& B# K
;;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4 z. V% G3 ~) ^" M; P: G2 _

+ _" q$ x' {: N* p) Y;;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' Q0 [1 H) a& V1 H
credibility-one& q5 z* ^# k5 L1 @+ G( [
;;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; C/ A( @2 i0 R) O
global-proportion
6 w. D- P  n, L0 i. x& Ccustomer
9 z$ W% f* i9 \  fcustomer-no' `7 {2 N. \2 F- O, N9 h! L- p& l6 Q
trust-ok# `: a- v9 k" |) P& T
trade-record-one-len;;trade-record-one的长度7 |, y& c1 Z- T9 i1 f
]
* x0 h: q7 {' v6 X; g- x# b+ P  O' X5 U1 Q* E1 `/ @$ \( d
;;setup procedure
( W3 L5 z, }, i, }1 R8 K! ]) [7 O5 }4 j
to setup. n& F$ w8 g  A
# ~- p, I( Y6 @/ k; G; [2 V# g+ v8 l" s
ca
0 i* h1 }5 G. V3 m: Z
8 b1 r( O: l7 I
initialize-settings

& _) j) W: k0 E) z! `, M
- S, Z% T  Y2 w$ P9 ]crt people [setup-turtles]
! \( e- e) J  P

- h) A/ R( X% Greset-timer
/ n8 c. ], x$ ~) i$ K6 x% K, g

* {" J8 ]2 [+ ?, p8 E6 X6 W! Wpoll-class
) b- ]# A: q* k! x

+ a, ]) `: t* S  Ssetup-plots

/ I! e5 D1 J8 m; [) m$ g& h$ k3 y0 x7 ], K7 d& J/ I. k) m
do-plots

+ E/ p0 z/ ^* ^2 G. ^2 nend  k. E- J+ _- H
( C6 c" F0 V* X8 v. w, Q2 m
to initialize-settings. M9 Y  j( Q- t, @" H1 t
: `8 ]8 T' W9 ]" s  a+ o
set global-reputation-list []
* M) }" W3 q( C& A( ?! ^

- @: Q8 |( Q9 Y( `6 N/ Q8 r: Gset credibility-list n-values people [0.5]
' \; X- K6 m( F# H8 c

; e4 n6 b9 f; x2 a0 _set honest-service 0

& h8 G" E* q8 m9 h7 f
, ]9 q( v0 a2 O# z4 k5 k% ]) B6 a% e, xset unhonest-service 0
4 c4 A  d7 @  g0 ?6 ^  ^! K
5 L# i" |- V0 Z8 }; J8 V" P+ `! G
set oscillation 0

, f2 h. f) b6 t% u7 S+ I% ~. U6 g% @# ]+ d# m5 C- l+ I
set rand-dynamic 0

& Q7 p3 l  G: h. k5 ]/ I4 F' tend, B* c' I. N0 W" Y9 g/ h

- m  L; T: I2 T( [! T! f9 [  ]to setup-turtles
% `2 h, w% a# P( Dset shape "person"
- s# a- z) M; p' [8 ssetxy random-xcor random-ycor
4 B$ e9 o% T* L% B1 d8 G$ `set trade-record-one []
3 T8 L& D1 {" e4 [) x+ l( r
4 Z3 x, H, M8 g$ n7 p* S5 x  Y
set trade-record-all n-values people [(list (? + 1) 0 0)] 1 b/ ~1 ~3 v, u8 _$ |% O+ C

& I3 X' j& e# _0 xset trade-record-current []
% t5 c) G1 }  _: pset credibility-receive []3 V2 f6 s5 ?0 ?1 C7 s
set local-reputation 0.5! J% [, ^5 e% p; h! D8 }) c# A: o" D# \
set neighbor-total 0
5 s' a$ a" T, J/ Pset trade-times-total 0
# n! c6 ?) t  T' O5 M6 N; r8 xset trade-money-total 0
0 C: s( p3 q" Q- o0 T# tset customer nobody4 A0 y: k4 i  |: S6 E$ S& S
set credibility-all n-values people [creat-credibility]
6 t& d1 Z/ ?7 l& qset credibility n-values people [-1]
5 @3 O4 j  a/ v" T& oget-color
  j. E( }. r  f7 @
" \! i* e8 w- D/ Q
end
! r6 W2 V# \% I% L5 n! H
) V$ w6 T- Y5 l# T: lto-report creat-credibility7 {( x& _9 B" Q8 L$ R3 `
report n-values people [0.5]
+ E6 ^7 q! G* p( v0 F+ V% l$ vend
8 `- N5 s2 n; R7 h$ _# ~
: y- K5 d7 |+ {% F# }2 Z0 Cto setup-plots* u! A( ]5 {5 [# D  g  e
6 N9 ?( H7 L+ s5 @( |; E  q$ F3 C
set xmax 30

4 z7 I% p! Q! e) q
, Q) \& r+ ^0 Zset ymax 1.0

. N1 }3 {0 y9 ~8 F
) G0 \  n& |* _3 ~7 b+ Hclear-all-plots

& C; A: b4 b2 M  X8 b& Q# q4 ?$ V2 b/ U
5 A3 `8 Y3 }. W7 u6 ysetup-plot1

. e5 F% a. t. @& D* J' I4 M8 A6 {. ], M9 x
setup-plot2
" j2 H. I; y: Y, a- s* J+ S0 P8 n
2 S) a  L9 m8 f
setup-plot3
0 B- V5 `, g4 p7 K+ P
end
( u" B7 M6 r# c9 s8 t9 ]- }6 F& O8 o1 F
;;run time procedures
7 K% d4 r/ j. J. {8 d+ u4 x  M# d5 i* s) ~6 k+ \3 d
to go
5 W3 s! j. P7 D  e7 Q+ e5 }4 {: l
8 J7 }& U2 r5 k$ Sask turtles [do-business]
& b" Y4 V" u) ~2 Y! f
end
: R. O2 r" \9 S# u- i7 B8 ^  J. {% q2 r8 a7 R2 o
to do-business
& L' G1 Z0 S3 R+ l; W
6 }+ y* h  z$ _% O7 R
2 B. [0 e( L0 Q  _! p9 }6 s
rt random 360
, ?( S$ x: G, x# U9 N

$ D; O5 E% S7 M$ `% P. ofd 1

- f/ x: q8 k! s' L* [, |  C- k+ p& |1 L. z# y7 ~! h
ifelse(other turtles-here != nobody)[
2 b# z5 q: z, I" \) I

6 G# S! B5 _: I1 B  gset customer one-of other turtles-here

% c8 }0 v7 ?6 H
, m. N# ]& a; w2 j7 c! v  \;; set [customer] of customer myself

( O- \6 X" P4 M- V+ Y
7 L/ p% C0 A9 Nset [trade-record-one] of self item (([who] of customer) - 1)! {7 V  R% n/ M- L
[trade-record-all]of self
5 `# y0 v2 L* r5 {$ N2 v# p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 C9 K: E8 P( K& y  ]$ |0 b  x7 E
; ?/ r- x9 ^1 ^7 l7 M: f5 r1 O3 Iset [trade-record-one] of customer item (([who] of self) - 1)
& y0 Q3 G' l$ ^[trade-record-all]of customer

" _" d. b7 V3 R8 F' r
, x, k- [' y: A; H+ f% W" h( u, v; r  Nset [trade-record-one-len] of self length [trade-record-one] of self

# }; `8 f9 c2 c5 ^8 _
( K1 f! u( N5 q  O- Lset trade-record-current( list (timer) (random money-upper-limit))

9 U/ B5 C9 Q# T$ e5 O( a: |
& {% d/ H2 k9 @ask self [do-trust]2 I- z1 o0 [( ]% ^
;;
先求ij的信任度- o. m! Y/ g2 `6 s$ h9 a) [( K

! w4 }+ i5 }8 e5 Uif ([trust-ok] of self)
' h. M2 ]7 _( D; G, r;;
根据ij的信任度来决定是否与j进行交易[7 ?! O8 F$ U5 ?/ U6 I% N
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 L- X+ G' Y0 y6 {9 e
2 c+ U8 ~: P, o6 u
[
( j  m7 Z0 c, o% r- i- h! y
) ?5 ?8 b* K5 ~( {
do-trade
8 {( M. z1 G: S0 \, A
  ^5 z+ z9 U3 M( U9 m
update-credibility-ijl
5 P% L/ H- ^2 C2 m
) q0 Y. {! Y. w% m$ N2 }
update-credibility-list
% K7 T9 H9 Y! }) f

0 r+ W, }& {' G/ S
1 k9 G4 G$ d, ^8 K) ~( wupdate-global-reputation-list
! B; R! A9 ~$ D2 x) Q

; G4 w( ]  y+ ]6 W6 t( W( Vpoll-class

9 {! _2 @) N2 p$ G* U1 E! c
  y7 |) I. L) a, Lget-color
2 ^2 I. z( x* \" [+ ?( \2 S, }8 Z

5 K( i) U) q) C6 K' B  \]]
, z6 |4 X7 z/ V
( [- c7 k2 D/ `+ K4 \- o' a2 f;;
如果所得的信任度满足条件,则进行交易% m9 J4 y1 i0 I; `0 W( ], o4 X) t

- V4 S7 J4 I- N[

% f) ?: g+ Z; A% M0 \$ p5 `6 p" c' p) b; I! C& W" e
rt random 360
2 `' V( `5 k# ]% x8 u3 m( m  ^
; b+ K! B+ n% a, ^& Q
fd 1

. ]7 u9 E) g( b3 W) e6 u9 C6 \0 \  R4 a% a/ T( l
]

0 h# |( r* f9 Z# e. A1 M8 q. n& ^& l0 k
end

4 `7 P( j) }7 C
5 \* g' y5 h& r3 Y  ^; A- d: Hto do-trust
6 v8 m7 _0 [! T$ C* @set trust-ok False/ M. y1 S" v# ?+ ?8 d
( r5 V+ w  u. t
9 G4 ]8 r2 H* S" `
let max-trade-times 0
8 K; R4 x) h1 Nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& P2 ]- @" _) B4 n* flet max-trade-money 0
& z# H: X! ~0 j0 vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, K3 |& [* v8 j# L4 j* v% U1 |! rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ N# N9 e% w% O( i  ^
. Y+ @8 B5 y4 {2 _. z6 G/ I/ G
, c- B& [, S$ x
get-global-proportion. x; q: \* @$ e
let trust-value. N4 ?9 J& d1 ?$ j, K& L: K
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)
1 Z- L, ?' I8 D( v8 M
if(trust-value > trade-trust-value)
2 h9 x! Y, O7 y& w% t[set trust-ok true]' `0 M9 Q! @" A+ ~1 ]
end3 t9 }" s5 C$ ^! o5 }

4 P2 e8 |  Q9 \to get-global-proportion% Z6 q6 o8 ]# h" g! W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  b8 f  l2 p; N2 M7 w2 {
[set global-proportion 0], F0 l9 `. M* s. Q! ]+ K* r
[let i 0
% M7 a# F2 g" j8 h$ olet sum-money 0
$ w' M3 Q9 Q+ _: f2 Pwhile[ i < people]; Q* c! _" K& Z
[) i7 j, P1 |$ F1 k% D9 p+ @  z
if( length (item i
3 m& d! }! P, W  g" V9 K/ p8 l[trade-record-all] of customer) > 3 )

# O2 z) v0 g8 G. J& A% h[+ v3 f% s' Q: S3 v* }
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ r6 P; {2 h4 g8 J1 f
]8 c( T- W$ L# {
]1 s  p8 P  a$ Q& W  H/ ~
let j 0- L/ p) B  u$ ^% l5 Z" O
let note 0' }+ M# h. u: S6 F( p3 G8 D" B
while[ j < people]* W. Z: ]( Y. U5 [  _( z+ J
[
& N/ h% k" U- W, lif( length (item i- ?. ~, n) a( L. `1 c- u
[trade-record-all] of customer) > 3 )
7 ]* a: L8 w" y: j- w* J
[" e+ c7 \) Z4 |
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  j0 Y, f( f! `[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  v6 X4 F- ^7 f4 C" h, U[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" h6 K: z' ]7 P% ]+ @
]7 e& f* ]$ F  @$ M1 y# ~$ k
]+ w& D& ?) d2 F- Q: A! A
set global-proportion note+ t- k' E3 g( ?" V# P9 k. A
]3 h0 u# B7 [- G/ E2 |1 H' n5 c& Q
end
2 X) x: |7 m* |" l5 r8 t, O5 I* i- p8 c. }; }6 B/ A( a
to do-trade6 E8 m/ P2 ^$ P; f
;;
这个过程实际上是给双方作出评价的过程
% o' s; o5 y9 |( z2 C5 c7 C2 G) Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% w/ m/ ^& b8 n$ u& c# a- ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 ~8 @5 l& q8 D9 @& ^7 J  k$ bset trade-record-current lput(timer) trade-record-current( O" x" ]1 Q0 x; q. O3 L$ S- R9 T
;;
评价时间+ M: c& V/ g1 a7 |( W: f
ask myself [
: M5 W2 ^7 p7 ~8 a) @( {; e  t' mupdate-local-reputation
; o: m$ J  V7 \0 S  tset trade-record-current lput([local-reputation] of myself) trade-record-current3 K$ T0 z6 w7 X- s
]
3 d- v) A7 B8 L( r6 L3 y, W+ Xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ @, ?: B9 K/ V, a% P/ T
;;
将此次交易的记录加入到trade-record-one( V+ q6 m7 v$ Q! z4 X+ `! ~# V
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: P" q- D  B. dlet note (item 2 trade-record-current )
  p: w" p8 G* t( T/ S' yset trade-record-current" g1 D$ P. \$ |9 U
(replace-item 2 trade-record-current (item 3 trade-record-current))

- G- I- y: M3 Y$ z0 ]# ~" I0 Zset trade-record-current7 V( d$ V3 {0 Z$ F
(replace-item 3 trade-record-current note)
- x6 q; m' [9 b
2 v3 Q1 n8 e) h# A

& y+ o; \8 X) i$ K5 Jask customer [
0 `& {8 \" ]$ ?5 I9 j4 Wupdate-local-reputation
: v& @7 P, D/ Q1 b3 q4 dset trade-record-current
1 \# U- _& e$ }7 Q* ~(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- M1 ]' q/ ]: o+ B2 x, I# M1 r0 s
]' H: l6 w) x$ c( d8 E5 R
1 ], Z' A3 x$ H

: s2 i, B! I9 p$ v5 e3 jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 B% s7 U( U# D; ]' f
5 }' V1 g2 ?8 l. o
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- I2 G7 u8 f8 z1 j: m
;;
将此次交易的记录加入到customertrade-record-all
, `3 }3 i1 p  Q# pend/ ^: r, D, z* l- |/ k6 D% x0 v

- ^7 p. `0 B: w/ {6 dto update-local-reputation) Z$ d1 ?* |9 s  [0 J  V
set [trade-record-one-len] of myself length [trade-record-one] of myself
, j3 h3 |) ^1 ]  Z
* \% ~9 ^4 h% c7 r+ y) x% o9 [9 m% N
;;if [trade-record-one-len] of myself > 3

3 c# L3 W5 j6 |! F. Q6 v) \update-neighbor-total  _: p( X/ L; w: Y- |% H7 T
;;
更新邻居节点的数目,在此进行$ f0 f# m* w4 G" ^. s
let i 3
  u: X" a* ^, ^! Z8 Ulet sum-time 0- K6 A6 `" u& B" ]- F" r
while[i < [trade-record-one-len] of myself]
! Z; v1 E+ |8 E" ?& O& V[
. g( w3 j9 i) c. ?  Kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( a' y- w# |+ i* O. \: ?
set i8 e* c' q0 J( |, p% k2 U  U
( i + 1)
9 S/ m0 z  R8 b* e  R  M
]
' }$ f5 }. D/ L: B* C, k) s. j/ y  Dlet j 3/ ]& K" d  o# H+ h% _% V; F/ d
let sum-money 02 ^5 X1 l$ A2 d; F, R1 ~
while[j < [trade-record-one-len] of myself]3 C. A/ k- d( ^9 ~
[
. j0 V$ j9 ?6 t% vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)) ^9 X+ F7 R7 P" @$ S
set j
4 v8 q7 S1 o7 \" n% R2 K0 p( j + 1)
( m. ^8 M) _- l5 S2 U% R
]+ _9 V% F6 N, z" V
let k 3
* F" k+ P2 W% F. Elet power 0: ^9 p% X1 P$ Q) n
let local 0
6 x; [1 [3 p' ^/ w! w5 jwhile [k <[trade-record-one-len] of myself]0 q  z# U( ?  u+ z6 m6 M4 t
[
5 h( y8 ]3 [8 P! a4 q4 q$ u- eset 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)
6 ~4 }+ ^% H! P- Nset k (k + 1)
. s( }9 n  Q" a5 U, @- K& v4 X, q& ?]
8 d/ {2 v5 }! Eset [local-reputation] of myself (local)
5 e" q0 Z$ C( G. H! [. O1 m3 e% ^end
, H  G, z& ^+ o+ ^! h
, p; E1 l" o4 q: l$ d# Oto update-neighbor-total" K4 n2 W& R' ]3 q) b5 \

& U# U3 h+ e6 _5 ~" d3 |$ ^1 S+ Aif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 `5 ]7 Q' m; @: n1 |
: H8 e) W4 A, e" r
- o$ |4 j* T% g, x/ v; P  g. E
end
: I, s" y9 b" G8 P; d
* L# w* J+ F9 |; U' oto update-credibility-ijl
9 r9 a$ Q" X' h5 u9 c1 E3 D
* \, g3 ?7 S9 K/ v( A; w;;
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。1 k6 F" t" H- z+ D$ s
let l 0- d% K' z6 j3 S1 E* `$ B& b
while[ l < people ]1 p- Y  l) g1 ?* y% g' w; m
;;
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 ]7 n6 C6 V; x* s/ q5 u% m
[
* j+ }. Q; m% C/ ?0 Q: |+ ?% P2 wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ j+ Q- J) @6 H1 H; M5 c
if (trade-record-one-j-l-len > 3); Y: n+ ]/ P; {' }! h6 @
[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+ m6 R1 {: G, ?3 g; A& \. k
let i 3# q% \( p" T! d
let sum-time 0
0 d, i3 |! K. q8 Hwhile[i < trade-record-one-len]
8 x8 o' ]. r4 i* b: n) f[
& [2 t9 l, Z; D6 }set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 P3 P4 _0 U6 Aset i
2 M7 e6 N# u& ], t( i + 1)
! N$ c, }9 T- D. J3 n: s# U
]
. A2 n- g  V9 @6 e$ Xlet credibility-i-j-l 0* }7 m& m2 a  F5 D4 s. N. ^2 ^( _3 h
;;i
评价(jjl的评价)! L* @/ \; ?1 ], i
let j 32 D1 S6 d2 k* m2 ]- h: Y4 N
let k 4
  _4 v. u- |, f1 g4 }0 E' i7 O3 Awhile[j < trade-record-one-len]
) Q" N! O3 C1 l! l; T[
0 a2 ]- o+ {/ }, o7 C8 G# i0 Xwhile [((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
! z7 m- t4 K- V# Tset 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)& b" Z; @/ s+ D7 l; a* e: L- l9 z
set j
( v) n# O# R# o. ^0 w  D1 f. b( j + 1)

0 e) Y" p  f0 t5 \6 g; h/ }- L]
- o, }' u8 ]( d) a$ a& Fset [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 )); n) Z6 g) C! E# A& }* Q( k

0 z6 ?2 m; u/ Y" k& x6 \9 E

9 E" H* P. H& i4 Z0 y% `# o8 _let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# {) P9 d9 ~1 F$ s# h9 i;;
及时更新il的评价质量的评价
! z* N! h. y$ q" h* \( A, dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 Z  r, ?/ I, j' N/ _# x! E0 }" \set l (l + 1)" X- v2 H  T, d; Y
]
8 L4 v+ j* n' B. A( V* E) gend  [5 {% D) C. Z5 ^
0 \, z" |3 i( r
to update-credibility-list
9 h( ?; U: @7 z+ X) v- A8 tlet i 04 q# v2 H' e- p' d
while[i < people]
0 _6 u/ E0 t; H/ _% Z[
9 M! i1 L2 f9 b, m) m( p% L4 wlet j 0
! B0 s* h( ]$ y! r' l# klet note 0
8 ]% C1 |. }9 p& Blet k 0
) Z( P2 a' u5 e% O) F, y& N;;
计作出过评价的邻居节点的数目* s$ C4 [  }& F! a/ z- A
while[j < people]
" _+ x' L# v% r3 E& V# n4 e[
* Q# n/ ?/ _; }) Jif (item j( [credibility] of turtle (i + 1)) != -1)+ v+ N# e$ F- V5 ^) d8 ]
;;
判断是否给本turtle的评价质量做出过评价的节点
6 K  Z. n) F: x( l7 X7 Z) S[set note (note + item j ([credibility]of turtle (i + 1)))
! I) @% p) N  b# V;;*(exp (-(people - 2)))/(people - 2))]

) q' t' [2 D0 r- Y$ r! Wset k (k + 1)
2 v' v3 U' N5 x$ Z- m]* k3 }4 U5 k6 t( G- f1 E
set j (j + 1)
: [; R# w( j) M3 a7 a7 S5 J3 {]% e9 `' `0 ~3 `% i& a$ i: _9 P
set note (note *(exp (- (1 / k)))/ k)6 B3 f! a! g$ |7 h  C: H
set credibility-list (replace-item i credibility-list note)
1 K% v) d! Q* l- H- \: [set i (i + 1)
( G5 A( l1 v8 u  m]
3 w+ {' n7 l' p1 F. o; U; Cend" H) I/ Z0 c  G9 `
+ T8 I& |/ y& D5 L& v( ?
to update-global-reputation-list+ d8 b# ~. L; O
let j 0& u4 W' F7 E5 j$ b! W) Z- B
while[j < people]
2 m, l, {. }* \, z[% ~2 \; L0 X. p( ]# M1 @6 \
let new 0
  p7 L' W* H; d7 H) k;;
暂存新的一个全局声誉. ?4 R. k0 z: s
let i 0) n* @' \  K0 m2 Q2 {* u
let sum-money 0) h) B6 k8 Z8 G" h: q( {0 V5 E
let credibility-money 06 H8 e  h3 `+ W& d& B6 I
while [i < people]
, B7 j( t+ J1 e; ^5 z[% J. }: b0 i- D5 T, Y+ m! n
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 k1 f1 P% h7 l$ e) F: eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* H/ `3 g8 [2 e& f5 Nset i (i + 1)
' c$ k& Z$ @6 ]3 k, v' h& i$ K]( X! c- y, _- j. d8 L$ ~0 k
let k 0
5 k0 q( b; ]! k: y) Y3 |9 ]% \' Plet new1 0' G+ a( q9 C* A( ~
while [k < people]: y) |: T0 O- j( t  {( E
[
- y/ q" J/ Z; 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)6 t4 W0 r0 `8 A" H/ ]. a/ v. L
set k (k + 1)$ y2 P9 U; T! P. G! L0 S- B$ S, S
]7 j& ^1 B, B& x
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( _1 V! D$ R3 ^+ a
set global-reputation-list (replace-item j global-reputation-list new)% o: w, L. A3 q, w9 r! x2 X
set j (j + 1)9 I4 f9 L' J; j5 W, f
]
! Z. {& u3 k7 w6 C# |5 ]8 A4 u! Jend
; Q+ |$ R# @! t) Q1 `9 y1 A. I
: j, j* ~4 a5 V$ r) {
! |+ D( o0 }' E" F4 e, l& M2 A6 p; D, G
to get-color" e' J8 U9 ^4 Z
9 l) _4 c/ U0 j( {2 l& y+ u
set color blue
& Q5 y: z2 o" Z- l( G/ F0 A
end2 S9 g  l" X* @

( P. t- I# @' G: |- l* u0 X4 Ito poll-class
/ |) Y  Y9 p: E- N% J( s& Send
8 r, n' U5 `9 f# h/ k2 U- [0 [! K4 h1 P. c' D
to setup-plot1
( O% b2 g7 a# N+ T6 c! |$ d, q$ x
set-current-plot "Trends-of-Local-reputation"

+ J& }# Z- |/ V; [$ f7 z( P5 s, N* A- S1 N  j
set-plot-x-range 0 xmax
) w. g0 b. E5 J* y3 ^

6 D" T1 T: U3 i  l# m# O, Wset-plot-y-range 0.0 ymax
* x3 D+ {5 {9 Y* R! }; s( v. g
end
0 u4 V3 A+ |2 v- [" o6 W: k6 L  n/ G2 |* V7 e# N
to setup-plot2
; T2 h7 a8 I. }
! O* R. l/ N3 E, wset-current-plot "Trends-of-global-reputation"

5 M* Y0 }6 Q. p7 c
( D" p3 \# f' q" Y' ~2 Zset-plot-x-range 0 xmax
$ V8 u; z* L% f- q" F( f  C

5 A( E: a( z! a/ E! n' Z* n$ m0 J. pset-plot-y-range 0.0 ymax

# k+ p$ [1 h# y; x" J* j/ Nend
8 c* z  x% {! O4 [0 Z  F( f$ o! e3 n
to setup-plot3
0 @" J2 A+ Q) i& j6 b
# i6 X+ n7 b- H7 ~& ?$ G3 Jset-current-plot "Trends-of-credibility"

. v, T4 m& r1 _1 R) J" E+ r9 K) h( k7 T2 p
set-plot-x-range 0 xmax
. w# V5 F9 U+ h+ {' K) _# b4 V
/ f6 `0 R$ `9 Z2 M
set-plot-y-range 0.0 ymax
4 r+ |$ ?" u5 T/ t" n
end
9 X* f/ G; `. b8 ~3 k
( e* @2 r- j9 t3 s$ E! ~$ Jto do-plots1 `% S4 t% u% R& `
set-current-plot "Trends-of-Local-reputation"
' N# L; z7 Y% U% m6 Aset-current-plot-pen "Honest service"
0 O$ u- G4 _: R* Z' {8 iend% U+ I6 _0 h& g7 z1 O2 T
% X* _4 _- o7 g1 u1 s; Y9 E& d+ B  g
[ 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.1 x" r' ^6 s+ m1 a' Y4 X

3 E7 I) r; ^6 H' S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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