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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:3 i* q8 b- l. s; O/ ?" \! ?
to do-business 6 l  y1 i: _$ G- |& P/ \
rt random 360. Z8 A$ F2 g' z
fd 1
- M% o* c  J" r9 d5 R) e. H6 e; r+ C- ?# C ifelse(other turtles-here != nobody)[
# p7 }* |9 E( ?3 W   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 m9 Z  v, a, e* ]   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . E0 D1 h. f5 U% V9 M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 N/ z0 g) r& w0 B( L' o2 s3 _   set [trade-record-one-len] of self length [trade-record-one] of self1 A# a5 E) k- ^* L5 S
   set trade-record-current( list (timer) (random money-upper-limit)). K, z! E3 a0 `6 \; l" P3 U
/ H( O# F6 t) D1 R4 z
问题的提示如下:
# D- {- N3 Q% g3 |8 ]( [3 D2 Z( |6 o# k0 z
error while turtle 50 running OF in procedure DO-BUSINESS
0 L8 ^; U& d7 h# g8 W3 |  called by procedure GO0 K) \2 q" I' d& c2 h! `' ~% J! m8 x
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
- v$ y5 s0 B$ V( f" N
(halted running of go)( y7 R4 ^3 f" T7 g/ s! |
8 d, y! J! J) a% t* T( T) S
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~~) r9 m" s0 E7 T! p
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! [& I" }! c* h
globals[& u2 z3 l! u2 i" l( U$ @
xmax# ~, i8 N7 n* U0 |4 Z
ymax
$ ?' j0 W. B/ b7 i8 |  c9 e9 vglobal-reputation-list
8 ^# e) {! V# ?: L# i& z0 J
, J. n! J2 i- ^;;
每一个turtle的全局声誉都存在此LIST  Z/ a9 _' g+ A* l
credibility-list
. [7 j' f2 n7 W( J  O  |8 A;;
每一个turtle的评价可信度9 k. L3 j  E# m/ E3 l: @
honest-service
$ n$ G" I) a; n7 J0 Ounhonest-service. a0 y3 l* T# G
oscillation1 \; n) ?; E( q& q: ]0 w9 I
rand-dynamic
5 i( S6 ~: j- E8 U9 N], y( P, W' z$ e# k9 s2 g, {( F

( x2 U2 f, o! Y" Rturtles-own[
) T1 B8 P8 [, P3 ~% r$ R7 Mtrade-record-all- ]1 X( ^9 y0 {
;;a list of lists,
trade-record-one组成! c+ h) {" k' p- O& X7 ~* x
trade-record-one- i; n* t# _! s% ]6 v% k
;;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 t7 I5 X2 o' o6 g1 k' q
. t) z3 `$ |* O. e: m% ^% c
;;[
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]]
" c" t3 }  }+ e' d4 ktrade-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]6 K4 l4 }5 e% G; U2 Q% Z- X* H) ?# N
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
+ e3 z6 S/ D8 K: Rneighbor-total
- H2 {  W8 H3 O7 P;;
记录该turtle的邻居节点的数目
2 _6 a" E  P5 J2 D: ?% a; utrade-time
- [* |4 h4 i4 q+ u0 \- t( V1 c) X1 Z4 R5 |;;
当前发生交易的turtle的交易时间
; C: f  n0 Q# M; L" F& r2 ~3 Lappraise-give
5 f3 V/ Z3 N4 g;;
当前发生交易时给出的评价5 a1 ^$ ~9 O, t, ], Q3 X
appraise-receive; I+ x% W6 B6 w3 _' M+ c5 e
;;
当前发生交易时收到的评价
6 X3 v  O+ `4 vappraise-time
6 n5 i" M9 u9 V" R+ j;;
当前发生交易时的评价时间/ G6 {9 G1 s- U* E7 N( j
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
, J2 R" Q: ^" Htrade-times-total
( u6 M7 h' a5 L; J( n) a;;
与当前turtle的交易总次数
0 Q6 ^, ]8 t' ztrade-money-total% R8 [- G# i; v/ U
;;
与当前turtle的交易总金额  a; ~1 L4 i" \+ a
local-reputation
! _1 g  V) \. @3 G( j; [  ]6 aglobal-reputation9 X4 D6 I5 h' T  C: W( u
credibility
$ f. Y; x, ^- T; `1 }) T3 k;;
评价可信度,每次交易后都需要更新
; a" A  G9 W1 i1 vcredibility-all
% W5 N' {$ L- ?;;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2 Z$ O9 h# i9 u
' a* ~0 w* O5 w0 S6 w( M: @$ y/ G$ P
;;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# j# i: X: b- L3 C$ K+ {( K; Q: z
credibility-one
% R8 ]6 k$ p2 Q8 o9 L; f7 ?: w% }: v;;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
( p& Q- ^9 C. A, Uglobal-proportion
+ L  \2 I: o  I4 z7 u) G1 j" \customer/ B8 W7 o' A- p7 Q
customer-no$ c* d9 S. [* Z& D1 c( {6 q
trust-ok9 v' {1 Z1 c- X. f' h# w& q6 ]4 l
trade-record-one-len;;trade-record-one的长度
5 q4 p! G9 Y1 ?]
, A6 [3 T& t) Y7 z1 m% f0 o% a. @. \$ i2 j& T0 [. K. b7 n3 s$ C
;;setup procedure# p! W$ a! R/ j4 l  f, T0 U

/ j2 G: G' U! g) P9 Sto setup! ?' B8 h! e4 i$ R6 z$ L

6 H+ c! w# {; _5 @* _6 Z0 T. \, jca

+ E9 k0 F. w* `9 x4 t4 F' K% Q! J  Z0 M1 M4 d/ G4 s
initialize-settings

0 N5 {! k3 t! P
! f1 r* R7 J  T, icrt people [setup-turtles]
, S2 }- }' |# |& X

8 J% _0 {1 ?: q% creset-timer

7 T/ ]3 Y% T# _0 x  B, ~5 g/ ?* x
poll-class

% ~6 u1 Z+ x2 n1 \
. H: N3 Y5 h7 _setup-plots
% H+ ?- j5 E5 B
! K$ o& m9 N0 p4 p# f
do-plots
, a% P9 L1 X2 i' i1 N6 H
end
' B9 D9 Q& H& o' v. C3 Z
& m3 h3 {+ U' [) @3 l/ T5 f2 Y% ^to initialize-settings! e: R/ }+ t- T3 E9 ~

7 ]/ W) h& p& U: J1 ]: qset global-reputation-list []

9 v$ ~+ Q4 J# A9 ^2 c/ N/ X6 ]$ I$ Z7 E; M$ V
set credibility-list n-values people [0.5]

/ m2 N7 [$ x# s
  E& n: ~/ G/ c8 Sset honest-service 0
5 X8 H/ w! P& E  x  D; L' F) _+ l8 t
* J9 F* o3 ]/ x- e$ U
set unhonest-service 0

- V& U, m2 H7 I9 R  x* p- g# O1 g3 C1 S* @9 o
set oscillation 0

; W% e. [* o0 `+ i4 Y
! L( ~6 p( j0 s( O- Tset rand-dynamic 0

* A- R! e/ u4 m' b7 e4 j. ?8 V& tend
% b1 r1 k% i7 c& |7 l
7 r( E4 X+ H( |5 O3 i. E4 c7 Uto setup-turtles + t. n0 h1 _6 m8 y9 {7 f! q
set shape "person"- w, _/ Q/ V0 F) G1 L
setxy random-xcor random-ycor- R$ Q& x/ ?( z, F
set trade-record-one []0 ^. l' f6 \9 w, Q  k8 \" Z

, i3 w, J' L- h, cset trade-record-all n-values people [(list (? + 1) 0 0)]
$ |+ x9 s) [; B5 Q' s) b. [

( }) s6 ]! w4 y( y- }/ [# oset trade-record-current []
8 l( L3 W4 u6 ^3 u1 j- zset credibility-receive []
, I/ z1 C1 Z2 }4 e1 }5 Eset local-reputation 0.56 R5 k& L+ q' h6 ~0 J7 V! q  N
set neighbor-total 0
8 h& c. f* i1 S* F  _* {5 J( i0 u1 tset trade-times-total 0
9 k% l( E+ h' b: mset trade-money-total 0
( G, D& ?8 }/ |set customer nobody2 F( j- |, c2 Q6 I1 U2 k/ [
set credibility-all n-values people [creat-credibility]
: Y7 R7 x* M& g6 Qset credibility n-values people [-1]
: C. ~: R3 O' K" ~get-color
  B( N2 @' E7 v0 j0 L
! J4 |  ^( S$ m# S
end
, M( m7 o: o1 l0 |
! Q& ~) r' t  F, @; L3 ato-report creat-credibility' E1 p4 i  `4 a4 {: C+ P9 R4 l. p
report n-values people [0.5]
. k7 l: M+ @" V( f& W$ V1 V4 v; bend
1 I  c+ Z9 m, U. z. \- ~: ]! {& H) ~, x) }. j* D) B
to setup-plots+ k& |4 C: h5 V

, [7 I0 o5 u# C; Zset xmax 30
% ]$ R5 g. ]+ {! Y3 @

' s# s% j5 U1 J& ?! b# wset ymax 1.0
( A3 Y* y0 [7 H/ p0 |' K0 [- d" |

2 _, Z3 ?3 ^2 D! m! Tclear-all-plots

' R/ y. G. k  v+ b) f* e( s6 u& @& f$ r1 V7 w. |5 y
setup-plot1

/ B, U; a- \3 a5 X" G8 m2 i8 T
7 q4 X! R3 \4 b4 u+ L1 csetup-plot2

0 `/ c# Z& g- _0 n& D2 p3 R0 H6 c! x0 ]4 B3 a+ [) W
setup-plot3

& `) V5 m) B, M) Uend
: }# H' ?' M: S8 i% ]3 o7 f2 T8 \
4 p4 ^' x0 w6 \5 l;;run time procedures! C3 v! u$ r, f" g6 B

4 P  x) L" n7 O- cto go' z" Q' J) @5 W2 N
7 k* C+ n7 A( o' q! ]# T
ask turtles [do-business]
5 @3 g7 E* T! a4 v
end5 a' ^! ?6 ^4 P! W5 Z
+ q. v: L% ]. F# u
to do-business
% I" m' W8 u9 m$ a
, P; o$ [- R: m

; X3 i; B" o! {9 j: }0 g; krt random 360
3 ?! y. S9 w" o: t9 m, _

& v8 }$ Q8 h* Wfd 1
  f; ~4 d2 c1 j& Q: y' x7 P
+ L, s5 k* L) J+ K4 |% O# Q- e
ifelse(other turtles-here != nobody)[
0 l$ X+ G! R' y- Z9 i

: @3 c3 V) B# l' }set customer one-of other turtles-here
" F6 t: H& D. F
+ i! S4 B( q0 a  b
;; set [customer] of customer myself
4 R7 |2 \7 G5 G( G4 K

9 G. V/ g' i7 F5 pset [trade-record-one] of self item (([who] of customer) - 1)# l+ M; G, |4 Q' |. X8 H( K) {6 n! B
[trade-record-all]of self
5 N0 T7 ~2 v( [0 H; h9 w;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& |; C/ }# h6 B9 N+ H$ A1 A; L
5 G# k. T: \5 E' O; S; lset [trade-record-one] of customer item (([who] of self) - 1)7 T1 d  b& T7 J0 n. {
[trade-record-all]of customer
  ~! t3 Q, f5 O
" r6 ^% y9 F& ~6 P
set [trade-record-one-len] of self length [trade-record-one] of self

8 v6 s6 j- h$ h; B7 T. P, m( V0 E1 h( g2 ^6 n; V$ c7 J4 b) G$ i! g
set trade-record-current( list (timer) (random money-upper-limit))
4 n0 i3 S5 Z4 ^5 E8 `

: {9 B. Z% J8 pask self [do-trust]$ {) _  e% L# J( q
;;
先求ij的信任度, X+ i8 W1 k4 S( n9 I8 q+ U  {
: Y. Y  {( I/ s
if ([trust-ok] of self), K/ Y, j9 B& d* g  j2 U
;;
根据ij的信任度来决定是否与j进行交易[
3 ?& V8 M4 \2 ]! C" h& Jask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: S( h/ |9 m* ]7 |

1 j. G: D+ S/ l: \2 x0 p[
2 H; ]+ o  a; c" {5 s7 ?, P/ ?
# R! n/ e0 e6 W% i  \# Q
do-trade
  w! X  c% a6 v8 q
# R: @+ J! k; J+ }* ]2 O
update-credibility-ijl
# Q  r1 O( S: h3 _( B
2 M. d) i' X8 q% j. i* O7 ]
update-credibility-list
( d) y, ?7 L8 m3 i: y( w0 P

3 Q" l. S- G0 k8 c) _$ h+ P/ f; [6 r* S
update-global-reputation-list

4 Y2 V/ u! p& g- X  J& F& i' G) [( Y3 v5 Q
poll-class

# N* Y# D5 S) A6 R* t" U! e! e9 K' j* o% p& K
get-color
* D3 H8 j. B8 Y

- S/ z+ j. B# P" b4 _& k* N]]
* f; Q1 r  S2 Y
! O1 b4 G8 R, e7 n* C' F" l! x2 n7 S;;
如果所得的信任度满足条件,则进行交易
; d( x8 L: L3 b
( l3 r0 V6 _" p[
6 G! W, \% X; |1 J* Q+ z
6 o4 K4 n: H7 w" V' U
rt random 360

6 u" z- l3 b& I) B7 s0 t# J
/ @; g8 b' n3 y* Z/ e3 M' M: cfd 1

6 X6 V+ W+ W! T9 v: M6 h: z0 G  @/ Q
]

- C" U. R, `: H. @$ t. s; f) ?/ Q4 l- N& G9 y
end

6 S  Q, L! c" o0 F3 W  s: w
: o& s( w, i: g3 oto do-trust
% B2 p/ F/ t' E8 i* _  L: n  W9 Yset trust-ok False
0 a9 P$ i, i5 j; ~# P  H: X+ K
0 X4 @" ]6 S! X5 E! h+ z+ a4 J

- ]7 w5 m& r0 z* [let max-trade-times 0
7 m: I6 N( U0 i6 _3 U2 t1 }foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 v5 ~- ~( I$ _) H3 u! D" ~let max-trade-money 0. k- W3 t2 ]- W" ^3 E% _/ H
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' `8 k- d( g( M" n; [let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# `+ I; ~( E% `$ y- r0 [- P$ [
6 d& Z) E/ @. u" g9 b) n- ]
' g& d1 _. z0 U3 u
get-global-proportion
+ V! t! b8 [3 ~let trust-value3 O9 i- W+ A% ?# z: F" R7 |
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)

4 v" i" q) }$ W2 O; G% K* \if(trust-value > trade-trust-value)
2 \" A9 A, N5 d8 R- t) \; l  W[set trust-ok true]
, a! l/ X  g2 v' bend
1 w, ^; E, ?: y- }  ~' Z& Y1 n% T+ W8 e* e6 X0 x
to get-global-proportion
$ J% n! ?/ [) b6 M3 S% e5 z2 wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  ~) }5 i5 M# f+ i. V( X
[set global-proportion 0]5 x& z6 W3 m; M6 d' j% b' t
[let i 0
- C1 ?2 r) u2 ^8 D* Jlet sum-money 0
1 v' y. u1 h  X, Qwhile[ i < people]
  j* T& ~* n. D* n; U9 C; `" ][$ w. H8 t; n  s$ l
if( length (item i
4 H2 [  P7 b, S/ N4 Q2 U[trade-record-all] of customer) > 3 )
! h3 O) Y* _$ w0 M, _
[0 M0 Q/ f% p' g5 X& `3 `
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 K9 Y2 G( B% u]+ K0 P" n: [6 ~3 M7 `
]
; X8 i% G9 t7 w* x* qlet j 0" g3 T9 d& J6 i3 {+ j; `
let note 0# z, K' ]3 N5 f" q% J
while[ j < people]
5 Y6 t0 e( N  i2 N- @[. a* E- b  X$ {0 Y) y$ k9 a
if( length (item i3 U, y- U5 S. a5 o
[trade-record-all] of customer) > 3 )

8 U2 z3 y) e, b( r- f1 R[
8 q: R% D% g! a3 \ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 a; H% K: R: i
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- g- |! t; K8 ~[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# v3 D7 Y, C% \: ]) d" [/ z
]
3 Z/ [- g& P6 s# C4 n# W" m]/ f7 A; j& U3 P$ a4 r7 O
set global-proportion note
; J; `( R' s3 j2 ]]" N  N+ V" F0 V4 @, k5 Z
end
4 d; Y* g# f  N" z, ?5 C5 V3 x' x7 ?; }) a4 c. I; z
to do-trade
+ I7 d4 q6 I/ c0 x, a;;
这个过程实际上是给双方作出评价的过程
: f, A: {8 s, |3 j& b) ~1 jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" r9 q  K; n7 J" o& Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- w9 K. p; q0 t5 f, F" s" ?
set trade-record-current lput(timer) trade-record-current/ T3 a' j- E  F9 P
;;
评价时间- y+ P6 U: K* h  ]
ask myself [3 G7 w1 X+ I& H/ E  |
update-local-reputation
' A% S  o6 a3 \& Sset trade-record-current lput([local-reputation] of myself) trade-record-current
8 J$ g& `8 w4 ~6 G( H]
9 d; ^/ A$ K$ N( Q' Tset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 t4 v# v7 j1 W+ q
;;
将此次交易的记录加入到trade-record-one0 u8 x1 ?( S9 m' j' Z
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; X$ W4 u% z% ^  rlet note (item 2 trade-record-current )
# |7 D$ ]% R/ c# @" a0 n4 m. H! J, kset trade-record-current/ E# [" c0 f7 u+ w+ \( X: B' M
(replace-item 2 trade-record-current (item 3 trade-record-current))
) H8 B0 S! J2 B0 e- Z) l4 _6 F
set trade-record-current* t+ Q& `+ y3 L5 Y1 z8 J% y
(replace-item 3 trade-record-current note)
3 ?0 i- o1 `9 A
: Z" O: O  W/ ?* o
/ l8 ^- D( ?1 ?+ e/ n1 U6 e
ask customer [+ @- n% F' ?9 U# q/ k& K, M" \" f
update-local-reputation
) x. Q. c# R! ^set trade-record-current
+ D1 s" v+ Y+ _) d(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& q! a. ?5 D0 L0 H]
- Z% W( }- a+ Q. `5 f; [3 j+ R7 n' j* r) ?: L. J; W# I  e
  S! c7 u3 G6 a. v& _# k
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% H: C0 n, Z+ @# v$ @
3 Z+ [" }: e: W! @- X% }
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 {& ]2 ?# ]! S+ Y8 e# @;;
将此次交易的记录加入到customertrade-record-all+ M2 ]; D8 D! q- @5 Y- T
end2 h, t: w% D7 c- u8 S
, k1 {- p9 r, s* i
to update-local-reputation( a/ f2 u* g7 N; _$ V0 u
set [trade-record-one-len] of myself length [trade-record-one] of myself. Z- s; J, H5 E( R1 N

2 F5 ^& B: K% F2 e/ S. ^% B  s  t$ s9 f9 C
;;if [trade-record-one-len] of myself > 3
# f/ t/ [) {9 W5 Z; r3 K
update-neighbor-total
0 F& r$ k, W+ H6 z3 K; D;;
更新邻居节点的数目,在此进行
8 R+ Z# w& h2 J9 M+ {3 llet i 3
+ N* H4 e, p% g, x! I% O% glet sum-time 0
$ ^3 y3 @* {* X# H* _7 f; ^while[i < [trade-record-one-len] of myself]7 I& A: p: w: `# B* z7 j
[/ O# O3 z) D5 ?% ?4 @' K
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) r9 q$ e% J# g* p
set i
% r% m4 N+ L2 T9 ^6 s; W9 f: ]( i + 1)

# w8 v/ l  W6 M]5 C" q$ x2 P+ h* f) V
let j 3( g6 L- f& w5 I+ o$ `8 @
let sum-money 0
; N& z$ c& T! L3 N. ?* |1 rwhile[j < [trade-record-one-len] of myself]" a8 u9 l4 i: h$ Z% C1 Z& N
[
4 i6 t  L6 a* B' g" `9 N- E! Kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
4 d3 ^& `, R, A, J' u# N$ [set j  Y$ U7 f3 v2 e+ X. ~. d# y1 z
( j + 1)
5 C% a& @. O' c/ w) @
]
- G" W( g# J( d+ D- }" I2 L4 T3 Glet k 35 E8 I) N$ p( N& a9 I. ]! S( M
let power 0, T- I2 k2 [( W. L+ ]
let local 0; o2 p- @- V2 N) T
while [k <[trade-record-one-len] of myself]
; H( J/ w$ W5 t0 g) o[8 V% f% e! T* b* M8 I
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) ) N; B8 j# W- m' i4 i& r" u2 o
set k (k + 1)" ?) s9 L& ~1 W. q$ O: `% |" _; V
]
! m9 M1 {2 M! ]5 B9 F; Dset [local-reputation] of myself (local)
; S$ J- ~+ s) ^% v4 ?' |: O0 H+ Cend
/ ~/ z1 `5 m9 Y7 N4 G  x, |- Q, B3 N, k9 O% ~
to update-neighbor-total
4 c* ?, J6 p6 M; R! ?9 B# v- G$ y3 d* \* F6 ]+ K
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 v4 b4 ?+ R/ u# [
! p/ `6 \  p& l: B8 W/ {
3 A- d+ e5 U( q2 a+ ~
end
6 K( E, U( [$ m' x) f" m: W: X2 f0 k8 }1 e% F( Q+ J- q
to update-credibility-ijl
" s* G2 s+ G$ z- [
! c# C1 P: p- 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。
3 b3 C8 E/ h4 e7 ^3 F  Q( Hlet l 01 |: z6 o3 Z% ], ^2 l# Z
while[ l < people ]: B8 d2 O  H1 ?4 S1 ^
;;
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# z( e, T  X: d1 @9 I
[
0 p- W# E+ ~; }( a  [let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 F% h* m& r+ E- j6 D. N: X6 m
if (trade-record-one-j-l-len > 3)" g$ C7 \2 r" F: D+ W" y3 m" n
[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
1 z: U! J, p5 \, vlet i 3
/ i& |9 V6 M+ O! c8 slet sum-time 0
8 J8 c6 c1 R& ?) E* ]while[i < trade-record-one-len]
0 j- L* g1 Z  C[
7 R4 q2 p7 `# @set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) q! @: ^* p! N8 g. Y! R' Y1 Nset i
5 F0 _/ K* R* L  s& h( i + 1)
' i2 F: p! R. [' W3 i& j$ q2 n
]
# \6 u; w" i4 T* m' Xlet credibility-i-j-l 09 Z7 O, g% E5 J% D2 S* t% O6 m5 r
;;i
评价(jjl的评价)
+ V" ^8 }9 b- w0 b) Olet j 3' w7 E1 s0 u& b; q1 y4 L0 B
let k 41 v' }( D$ C. m! ^
while[j < trade-record-one-len]
# n( A' E9 y2 f# I[
7 j# j" ^# m; j+ a  g1 Q+ L# Dwhile [((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+ {, D. v: a" s; B4 ^( [  K3 _8 m
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); @0 c3 _" c1 j/ O" s0 w' e
set j, J. D, P6 M( k& t/ ~! r
( j + 1)

3 T' k5 ^2 l2 T5 K; o3 D]# b. X# D2 R) D( x/ d  r
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 ))
% ^5 d( b% j# ~8 m6 `0 t5 ~& l( N. t2 Z3 ?( Z) Q& C! n. C
& W. N/ J- y- G$ {
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 w. E. y* c! |+ Q  }
;;
及时更新il的评价质量的评价& C* k- \3 p$ Q. }2 \
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) P! f+ p: K; E; F$ Jset l (l + 1)
& n8 \" ^/ {5 ?8 o  x]6 l1 G/ f3 E- k  J! `' g
end
2 }$ F9 r$ P; b1 }8 Z3 d( |
  ~7 B& A, k/ Oto update-credibility-list
5 n0 W0 \$ b+ t0 flet i 0- Z: j, }7 R: d& e  i. m4 o& E
while[i < people]
4 w# A( _( `* J, N. z9 R; _1 F[5 j# |, c/ d+ ^  D7 ?0 b
let j 0
4 x2 Y3 a" ]) W9 @* Ilet note 0, b$ U" F) A1 G0 t
let k 0, s6 d+ m& t. l
;;
计作出过评价的邻居节点的数目
9 E7 \# W) r! W7 s6 a; y6 W1 Gwhile[j < people], W- P  O8 q* h0 `& j9 _
[
( y8 H: O* Z. n7 @if (item j( [credibility] of turtle (i + 1)) != -1)5 r. s9 {6 u, a0 T. s: O  ?
;;
判断是否给本turtle的评价质量做出过评价的节点
& ?& ^9 x7 ~# k& ^$ m  {0 a[set note (note + item j ([credibility]of turtle (i + 1)))- [! N, V. S$ ~3 _
;;*(exp (-(people - 2)))/(people - 2))]

& G! X0 o4 t& d/ u9 e8 ]/ Jset k (k + 1)6 t$ I4 ?, ~; m) W/ d/ w
]
; L5 k* z6 }% S- z9 V0 fset j (j + 1)
: M  M0 ?8 ]. F4 |]3 c5 u; B5 Z+ B! O
set note (note *(exp (- (1 / k)))/ k)% t9 Z: {- `1 n! E& J' O' E
set credibility-list (replace-item i credibility-list note)6 A6 P% q! }% d- l# C! z
set i (i + 1)9 _: B: t8 H# L6 V1 S' [
]
- m2 X: b: q+ @- ^end
/ {/ T* q7 M6 e) e* w* i/ G
: ^+ U  p: N  a, q7 \to update-global-reputation-list
  c: _; S. j( {6 W2 s3 `% F) @. hlet j 0
5 W; O% D" W% Z, ]" _( ]$ ]: pwhile[j < people]
! n/ n( o! g* c5 e! p[
$ F  Z& V! c7 Wlet new 0
" g, S3 [% Z, m, s;;
暂存新的一个全局声誉# G' @, d) V: ^. X" a' {
let i 0
, U. a& ]* D6 i2 L# R2 H4 jlet sum-money 0
  O3 O& D# y- A  i7 t' g, X0 Hlet credibility-money 0; d! q; ~& w* w/ S) H6 @
while [i < people]
: p, o5 x2 U/ |: x; y1 w' t[2 L- K  n* O. Z. A- d( h3 u
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" k9 j% ]6 `# Y  f+ {
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* d8 m1 {  I$ J
set i (i + 1)% A/ L8 ~' q  ^1 q
]0 e4 N& g6 ~9 F7 ]- H
let k 0
3 V% z( @9 V: i  f# _" ~let new1 0
: F2 t* f) S  ~; y- Vwhile [k < people]
1 x* C5 E/ Y: M. M8 c& ][
- W  k. q' 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)
2 J% f$ E$ V: P! S' nset k (k + 1)! j0 g6 [' I1 v7 x# }- r' O
]' i. k! B. y. H: a3 E8 H/ @
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, Z- _9 B( p% [( cset global-reputation-list (replace-item j global-reputation-list new)
/ b' ?. T+ d& @set j (j + 1)7 `: t8 Q8 Q" q9 R" r8 N
]6 t$ ^7 C/ J& c# ]( e' T+ w
end
8 Y2 z1 c% @7 e1 |1 Q! \2 L$ C% j  k9 R

3 R! y" F/ b8 \4 c. g4 p$ C) B, m, J$ _0 h1 D
to get-color
- i8 e  P) w. x$ j( q3 ?$ \% @, A2 L/ G, U& x6 m
set color blue

0 s9 W* ^$ N5 f6 {5 A+ Lend
. a: J5 C9 i; ?! t3 m% {+ h
  r$ s. P: Z7 i- B; }7 pto poll-class& A2 w" q# u* g$ c
end4 J: r" F2 ~- m! I4 n. m

. p- j" n9 s& N& E" b% I) K% x2 k. Kto setup-plot1
- e& u# u1 L2 g+ ]# n& _# a  W6 B' H  i& m9 I; s
set-current-plot "Trends-of-Local-reputation"
) }8 \% e$ i& m) u8 B7 X% G- Z9 F
; `8 k7 H/ y, h. F  e, v
set-plot-x-range 0 xmax

9 h9 E6 g5 `. M, o) e) O
  S8 H/ a- J: z' y. @+ ]set-plot-y-range 0.0 ymax

" q4 ~, A( S0 o$ L; ?) v% H, ]! Zend: D7 S4 L8 m& @3 q& N" t) W

. g& l& z& G) L8 P9 H; Ato setup-plot24 {- X  n3 m" ^4 c+ i
- p5 k4 U" K0 x
set-current-plot "Trends-of-global-reputation"
# g& L5 g" X/ a* V! C. \8 N6 @. i& L

3 Y- r( l2 A4 S; U/ Fset-plot-x-range 0 xmax
; l8 W0 O  R- k5 c: G. ~

, `+ @, X& p9 x* Q( Yset-plot-y-range 0.0 ymax
* X# a7 y3 p1 w; s) u( V$ @" C
end
( O  [9 a& z! p, p# X& }" S, \8 z
4 u! Z$ E' C" i1 K7 tto setup-plot3
& c# W$ |% u7 B! \% v: D. I$ V3 a3 `! z$ X
set-current-plot "Trends-of-credibility"

: h4 n7 n' b6 s: b/ J. r
4 {) t: Z# v1 l# a6 A! P# b. _, Dset-plot-x-range 0 xmax
7 `3 _) R3 r2 P0 w8 e4 f! d; Q
4 b: L& }1 J1 M2 I# [
set-plot-y-range 0.0 ymax

3 b5 L- h% g5 [, x; `' qend1 c2 w5 Q( ^- G6 X0 @' w0 h
3 Y1 h2 i5 l" j& E) X: N
to do-plots
0 H3 t9 o9 `- w; }+ Z6 u0 l! J# K' lset-current-plot "Trends-of-Local-reputation". l$ b' o; k( z. h3 z6 {
set-current-plot-pen "Honest service"
; |0 a% l0 f$ Y! t' Jend% @" [6 f/ ^3 ?" n6 p' f: s1 Q$ l

2 J9 }6 |+ d4 v% R; 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.
# W) W+ y7 W1 ^/ K
4 N, Z- ^6 _- 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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