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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:
1 Y) M/ q: ~% b7 u$ o, rto do-business
! }2 u" B' f) I: W rt random 360
1 C. z/ y; t8 i/ p- u$ B# A fd 1* ]+ P1 F# L; k
ifelse(other turtles-here != nobody)[
" R/ r  g- K# r/ x1 q   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.- k# Z+ R: |0 b. {" N7 k. ~
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ ]5 B. j5 g4 C8 e: z/ G   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 I3 y" t% B$ p% }' ?  X
   set [trade-record-one-len] of self length [trade-record-one] of self
! ~/ L4 w/ m9 r, K- C   set trade-record-current( list (timer) (random money-upper-limit)). o- d, [1 R! m5 Q. ^2 m$ g

$ h& W( }7 C3 K+ U! e9 ]问题的提示如下:
7 S% u) o5 p' g4 o8 r/ N, s* H
* T. }4 Q9 d2 q8 E: gerror while turtle 50 running OF in procedure DO-BUSINESS
  }* n9 Q, a( Q  called by procedure GO
2 P# q& R% v+ [( Q. B0 L. vOF expected input to be a turtle agentset or turtle but got NOBODY instead.  W+ Z, S7 d* O* S. o  s
(halted running of go)
1 ]6 \: @; C" {5 }& p, S! e7 e
: v  O6 t7 X: S" @( C: P6 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~~
* z0 e5 f. T6 w* X- Y2 S" K# X/ 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* q& h- H* ^# L- d" q
globals[  `* e! t7 M. o& j2 u1 w
xmax% K" Z6 ^) @, W0 V+ G4 e
ymax
$ i& N; W. g; Xglobal-reputation-list
; R8 s; Z, Q! P$ G. p
: G) r& J" ?  z& O3 X4 ^" F- ?;;
每一个turtle的全局声誉都存在此LIST
; G9 U# N+ G1 y6 Rcredibility-list- D1 o* ?/ ]5 L. Z+ u' K! N
;;
每一个turtle的评价可信度
0 d2 O7 R( \  L$ p" I+ d7 Rhonest-service
9 o" V0 ?: `6 Q3 [# R$ kunhonest-service
5 V* E8 i4 Y5 P5 {6 E0 X& woscillation  j5 f, E' I- h) @) Z# U' G/ J
rand-dynamic3 H3 u4 |; w' \. d
]
2 W$ O) j) v$ l3 E+ ?( z
1 R+ e2 L' }4 J( C- Q# }. g) Wturtles-own[
) E1 Y9 R' M# O1 _trade-record-all% W# R8 v4 j8 L( G' s# b8 d4 ?3 W
;;a list of lists,
trade-record-one组成
* H: Q1 O/ U1 s" ]# F+ }! p: B' htrade-record-one9 ?: S  J/ ?8 l* R% K8 O
;;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/ R+ H6 I; s2 c* s/ B! R

" p' y; ^4 y+ z( o6 H! N. Z* m2 D( q;;[
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& @4 C4 k- s1 \2 M5 _' P
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]3 }6 i+ t  @4 v- F0 K" E
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# h! L- a1 O! |4 r
neighbor-total4 Y5 [! O* _+ H! n5 E1 ~9 `& U
;;
记录该turtle的邻居节点的数目  i( f5 v6 a+ Q& q) [' L
trade-time2 y, u. q4 t3 _
;;
当前发生交易的turtle的交易时间( J) g1 k7 C( w6 o) q3 b1 m
appraise-give
9 S9 W! e( I9 ]( p, a, F. C;;
当前发生交易时给出的评价! S/ S" m( A! e+ C
appraise-receive
9 \  s2 J. a( x;;
当前发生交易时收到的评价
% y1 P  [0 n$ i3 c# f1 jappraise-time( a) }3 `  Z9 l$ H, b% G
;;
当前发生交易时的评价时间/ y4 Y% o  I" @
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
9 P% R5 w- V- Z) i8 _trade-times-total
7 T: g7 A- `  d2 M) Z# \$ A;;
与当前turtle的交易总次数
! }& g7 S+ h; B2 J- s: M& wtrade-money-total
1 r4 `3 Y7 a" Q. {/ `;;
与当前turtle的交易总金额6 s/ z( J( f8 d3 w0 a
local-reputation% e' U( `0 T, `
global-reputation) i$ n$ T; m* Q' F/ K
credibility! S2 L+ G+ h1 S. x8 r3 W( t
;;
评价可信度,每次交易后都需要更新4 z+ p- {  U0 l+ M
credibility-all
2 [  p) `+ B; }$ _$ y7 T: _# l6 o;;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
" \. e; i0 u- c4 j8 w! b* O5 t6 b8 O7 R! U  Z4 A- p! X4 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* \! P: n$ ~& s5 {
credibility-one# O0 D4 D3 A, \5 Q! m9 M  P
;;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
  E9 }! X# l9 Z/ dglobal-proportion3 p& q( j5 G9 H4 I& T( e. K" l7 a
customer
4 Y0 i/ n4 x( P! z& u! m7 q3 rcustomer-no" W) |4 u- C  H3 ^- q
trust-ok* B8 [7 [/ a1 c! ^4 b5 P5 ~
trade-record-one-len;;trade-record-one的长度( {8 @6 r% w$ z& X& Z3 Z
]
: M" `) z4 y; [' y0 ]: p6 q+ I6 ~7 Q: @2 L
;;setup procedure
5 t1 u* G0 c" J( v
" K& Y& {% G. Ato setup
. A% S- L- x6 _: }: R
2 t, i& P5 F, x$ ica
; `% i' t4 g6 p- {$ W+ R

7 C, @4 l! b# Q( }) Finitialize-settings
, V6 _$ ^7 `) Y5 W. y

) [" e1 M+ j. @5 t' E% Y( Ocrt people [setup-turtles]
- L, V. h1 z- u( e: u) `( i
4 h) X) i9 H% I( `6 _1 W
reset-timer

9 n' ?. `7 Q9 N1 ?+ n4 Y( g2 s: e
poll-class
$ U* `. A% |/ @7 C5 r

7 R% Y- `5 q& [# e- ysetup-plots

0 U" Y9 y2 e; Q/ t! Z/ u8 M
* _! Z( X3 [: i* I0 ~2 P6 D2 {& Cdo-plots

3 _8 l! g: k4 v: uend
7 M) V3 {8 z  J4 v) L/ h! |$ k6 v" Z- o# z0 \: N( Q! \
to initialize-settings' |8 s6 K8 q/ i9 P5 E

! R0 k' r, A7 E; ]& Aset global-reputation-list []
" Q- z* }. v9 |' b+ p3 x; }
+ c6 c) I. W+ s6 ^
set credibility-list n-values people [0.5]

3 |" d9 G: t3 i% [
, a: U. ^$ L. }5 c4 F' m( T5 x: Dset honest-service 0
( ^' l0 M7 b* W9 A
8 G8 c3 u# h! _0 Z7 o  T
set unhonest-service 0

. t; |$ a5 t7 l5 |' L
0 G4 Y1 v+ c* `# Gset oscillation 0

3 \2 A! ~0 A$ S  @
+ g. t; W9 J! O: z5 Q* x$ S3 Y! Zset rand-dynamic 0

' p+ S3 d% K7 K( g% N3 tend
8 [' ^" x- g8 R7 X. d7 F$ b9 m  r6 k: B
# @) U: A8 d- \- hto setup-turtles + i1 g; y% a5 d1 |% P4 S8 t  W
set shape "person"
4 U& R* P' @' ]# t. f. s3 j8 f# {setxy random-xcor random-ycor' J) L' d3 t7 w
set trade-record-one []
! D* _% }) D7 {. \7 t3 L: D: w2 |
' [6 c2 T# e+ U0 C7 P5 m* k
set trade-record-all n-values people [(list (? + 1) 0 0)] " u3 i  h8 K4 u- n7 g, o( ^
& J/ R3 c  X* x: a  O% ?+ x0 b
set trade-record-current []
2 M7 j1 C& T0 w$ P, Vset credibility-receive []+ e3 K: e' E: k/ M2 D& Y  d, A2 k
set local-reputation 0.5
7 w$ m  Q2 j  ~8 X' `/ z7 ?set neighbor-total 0
; p  M* \$ j" h8 r, pset trade-times-total 0. f) d8 E3 I$ h9 z# G; U
set trade-money-total 0
% y, X. D2 \+ N0 Y3 Jset customer nobody
" c& V8 ^; F  m" O- C/ \set credibility-all n-values people [creat-credibility]
; n; M2 m5 R' g: j: t, Jset credibility n-values people [-1]3 X. A. i2 l  ]' A" b5 d
get-color% i! t# b5 H  \* J0 Z8 y& |, W

% W& e$ e& K# h4 @) y* ]  Z4 U0 f8 Bend
  v" t; ^2 Q& r% c& R8 \3 s# ^2 w6 f2 S3 I% ~
to-report creat-credibility
2 K; E! R) G" Jreport n-values people [0.5]+ y6 K9 ?$ B# X0 _$ H! g  c2 D
end
$ r4 n" O: s8 t( e$ z! F6 h
" a. \% o/ S/ ^, bto setup-plots3 f5 e! m- B- F7 q3 k
' P+ B3 A) l# b
set xmax 30

* q+ W- e4 r& D& S$ A/ w" r6 G1 r* C
set ymax 1.0

# R% @& _' K* ], X2 A0 E; y( S2 y3 i3 Z" U6 D1 D( O9 R
clear-all-plots

5 N4 J( U1 o2 w' @9 W1 |; }' c; r+ @
3 k+ S6 m, Y; T1 _- osetup-plot1
& v- \1 R( o( u3 h  t2 [
# C4 [9 p3 q/ {  i- t2 S& T
setup-plot2
. d% P6 P0 P3 `% W
  p+ {' M5 R, \- W
setup-plot3
$ u: U! F2 N0 A- [
end/ X: K: |/ b" p) L$ r4 [3 e

( q8 z3 {6 C3 R" L6 [9 m;;run time procedures: {9 Y' d* \7 e1 p# _8 D4 r. V
; @% ]  G$ ^7 G. Q
to go% a4 s& W, E5 I. r
: r6 b0 j( p* W$ {
ask turtles [do-business]
  I) v( w: y6 s3 S4 W
end
' f4 @) a  Z5 G) f% `3 P- ?) o
/ s" C8 n3 a/ {9 c/ Lto do-business 6 J  ]- R/ E5 K5 \
$ Y( J3 W3 o  U0 F/ s
# \9 D9 b# E6 b! n9 D6 u
rt random 360
( r! b, ]; J8 y

' }7 i) ^# q. Lfd 1

$ r2 ]1 F9 _, I& Q" g; W
( J9 l9 B1 |; N. t. }& ]- s" M/ Fifelse(other turtles-here != nobody)[

) i- \/ j, I! _# p/ ]8 g
4 [  a! S+ _2 A( G; K  {set customer one-of other turtles-here
6 ~" ]: h: ]; |# q" w2 ]3 I5 f( s1 u
4 q/ n( |: p  A2 |# s* t. E
;; set [customer] of customer myself

$ n% N; M/ E  h2 N  ]+ u9 M  W# x% ]* |$ v4 E
set [trade-record-one] of self item (([who] of customer) - 1)
( V  G+ i! r2 T# P7 ?1 ?7 p# N% B[trade-record-all]of self; g& u9 T% l9 M  m, j/ a' T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" z/ J- T, T4 d, s; n$ z; v4 }* h# f1 {2 D1 V0 E# I' \
set [trade-record-one] of customer item (([who] of self) - 1)) ?* X- n8 x' m* b
[trade-record-all]of customer
- I% j! v0 R/ y& P: w8 h3 |
) [7 E- n5 v8 |1 A1 j1 ~+ H
set [trade-record-one-len] of self length [trade-record-one] of self

. u! p- t! C3 p% Q0 S( `% V- P
, r: `( g/ |: R  U) O  qset trade-record-current( list (timer) (random money-upper-limit))

% \( E8 u- b# J. F% ]8 a0 I, c7 g/ Q4 {6 h8 k) W9 r, r
ask self [do-trust]) `- _. l6 m+ I5 S% z5 V% k
;;
先求ij的信任度
6 N- P3 }! h  r3 S+ B$ s! o5 s# ]) I" ?1 ?! d0 @/ \9 g- z
if ([trust-ok] of self)
; }  N' ~1 H/ d0 Y( y3 b4 u;;
根据ij的信任度来决定是否与j进行交易[
/ ^- `: m5 K7 V  q2 D7 nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: B/ J& Y; o! `- I/ l: U5 p" M! v5 x- w# h
[
$ Q. {* ]& e4 Z" S) o/ B

5 o" \5 ^' `: S* a, ~do-trade
" t. o: l9 z/ B, O& S
: @; r+ L9 g4 t: ~
update-credibility-ijl

: n  T& J# `" M3 q
# D$ e. `! t0 @update-credibility-list
, i; b2 {! \! w# u9 R* A
2 ~4 L$ b% h$ `" }; |7 [0 _
% v, p* Q$ Y* y% h4 S( \
update-global-reputation-list

! j8 A/ G: U6 [4 `1 K8 n9 b: l; i3 o/ f' ]! w
poll-class

1 q; J9 P6 J% |* x/ i! D
7 A. u; A$ J$ q% u* o) tget-color

: O  n% O( F; ^) j" {- }0 \; n. V+ a6 s$ m
]]
0 B8 O! g) F* w' q, e
5 U8 k# N% E. ?# i7 e8 Z; j;;
如果所得的信任度满足条件,则进行交易
# N# u* r* G8 d" E. g! M" l3 d' Q- i2 m
[
- z4 Y, V$ L, l: C- O5 z

! l$ w: f/ {: wrt random 360

/ x$ ]5 G. q5 I& o
# X, N+ l7 O$ lfd 1

7 U2 l. v) v+ L  Q1 c$ d9 v
2 Q  ~% M# l& y* L! l]
$ A5 _( o* ]* T* ?- N

0 w( b0 r& g, ~# d% eend

  ?; m' \6 n; Z/ t5 M- |2 _! A: S% t& n: A
to do-trust
, b# K3 C! g/ N' V+ c8 bset trust-ok False
6 h3 a$ s4 \1 ^$ g8 i1 ?* S8 X9 m' Q

6 Z% @3 \( _1 ^' }* v; H; Klet max-trade-times 07 b7 T7 U+ n5 e; E
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 P/ k! k: ^! Y. c5 @: B2 j$ Q7 nlet max-trade-money 0
6 ]' B8 R( T8 T. ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! g5 ]- Y% M8 \5 G9 flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  L- m7 f" J7 T
6 S8 |/ F2 p: Q, i

4 v6 C; a; t! X( kget-global-proportion$ b* T2 Z( O+ W( U/ m
let trust-value
4 U% u! {+ B0 c! y- }, alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

: N4 y" Q- V4 B/ Kif(trust-value > trade-trust-value)
4 ~: d, f' c) l4 Q: R1 t$ U[set trust-ok true]
5 t; k/ }, u, Q) }. j' @, ^4 ^/ ?end! s" Y6 w% x7 A

9 z# j% [, T! P) m& j- fto get-global-proportion' \+ v3 |1 g) |( {
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ b5 ]! k) E4 g* p. P6 {# H
[set global-proportion 0]6 `& T- l+ W, x8 T. K. O$ z6 v3 b3 s
[let i 0
  y) [! J5 P8 O. N2 y: Qlet sum-money 0
+ ?/ a0 F: {$ s# e2 E. ^! n. jwhile[ i < people]
3 ?9 {' T9 w  _' s% m[+ z1 b/ C. b) q* V
if( length (item i( ~/ ^' T* H! B# r
[trade-record-all] of customer) > 3 )
6 q& T& P3 @# B% l
[% H% Y% |4 @9 b
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 F. e$ K  @* G]8 N+ A& m: S" M' e% D
]
7 e( G$ p0 o' f9 J' olet j 0: [/ E7 V! s6 j1 n7 g
let note 0
! M' }  {0 v$ N7 u5 nwhile[ j < people]# i* v& Q& Y  r! [* r1 e. B% `6 Z
[
1 E$ ?. h! y# \, Q* p  zif( length (item i/ j2 B: ~1 L4 b( h
[trade-record-all] of customer) > 3 )
1 V- q" ^# I" ~) [. l
[4 J+ c7 q- P7 q5 M$ ?, I( U
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 j# n, u' E- |0 G9 [" L
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 d' W& H3 {! Z  c' N4 q% b) F
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ f; d3 K  Z8 Z# o, ~]
/ v7 E0 j5 ]  d" C- r]
  Z* w, B9 Q# _6 _" d" N! d+ a8 mset global-proportion note
0 T  d' l* u5 C. u: C2 R  k]
( F+ r6 s' u6 F2 v! [" j0 send
  \( P0 D% S5 u; W. l* h/ Q
7 h9 i6 N  R) I. X$ Mto do-trade
! Q: Z6 a9 \! \1 H3 T;;
这个过程实际上是给双方作出评价的过程, a0 z% g; S( X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 D8 Y* w' H: y3 \% k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 p% K1 g1 ~& X9 A- `set trade-record-current lput(timer) trade-record-current
8 I) G' n4 a8 x. J" H8 p;;
评价时间
- @- |% I( b+ F7 [9 X% D3 H9 ~% @8 \ask myself [) G3 m% D: x( Y# h
update-local-reputation
; z: f( P, _9 p2 ?0 ?) Jset trade-record-current lput([local-reputation] of myself) trade-record-current
2 V! l" R3 G" Z% x]
2 {1 j. }6 ]6 K) E& R- m5 sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 q; U1 a& |4 R# Q9 [% t! |;;
将此次交易的记录加入到trade-record-one
* h% g, Y% v$ n) c# s* w9 Y/ xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 U8 \. [2 ~, f& W% r4 Tlet note (item 2 trade-record-current )5 @7 U+ K3 z( G, M7 s, o/ H
set trade-record-current1 j6 ?+ z& @4 W# K$ C
(replace-item 2 trade-record-current (item 3 trade-record-current))
1 o0 g( {! }- t$ D; Q
set trade-record-current
6 S7 s) d# l! C. t% t7 n" h(replace-item 3 trade-record-current note)
; m/ b% H: w" L7 T3 v: ^" U* l7 C% u& d0 F" O

% J+ s3 h! C* S6 F# ?& C8 iask customer [
) ~8 y) G; g3 x# w* J, Uupdate-local-reputation
* k. I- i" {. g+ Eset trade-record-current
. U$ A  y3 r4 A" O" ^6 X* I% ?(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 I" e6 O- v6 p) Y  @
]# r  l% e$ W! ]" t9 F7 X: }
& g: [6 J3 M) X3 s0 Q* i
2 C- }& V+ r; B( Z/ k* I
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 E" O% O6 W6 ]

$ D- r& ^1 |# Oset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 p% Y* B/ v( j$ A' A; a
;;
将此次交易的记录加入到customertrade-record-all& r* f% P% r! W8 p) Q- d4 u& G
end: S- |6 t4 I6 [$ N1 O3 }% u- C

7 J4 u: d$ M1 i9 o4 G3 xto update-local-reputation
' g. M! ^$ @( E' cset [trade-record-one-len] of myself length [trade-record-one] of myself+ ?: w# c  N4 a

# i2 V/ }) Q5 t7 L$ G; L& H- K$ |2 _! O  w# I8 }8 b# v7 C
;;if [trade-record-one-len] of myself > 3

# l" E4 {; I' dupdate-neighbor-total
4 m4 }0 u3 _. i" f5 |;;
更新邻居节点的数目,在此进行
' M9 N% i  P/ d# T6 `% xlet i 3
  b6 p" K# S' d" t5 tlet sum-time 09 g* b3 q: f" n4 b1 [& I+ P, @
while[i < [trade-record-one-len] of myself]# [1 S, x' W/ X. Q( v+ T5 G, o
[! V& g; z4 ^1 I6 ~& g/ Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" z  D( ^$ i) v* g3 \% ^/ i1 A
set i; H2 T" K! U; z# W- |
( i + 1)
* j: Y! |4 l! L$ D' ?, y! d3 R
]  O( Z5 F4 H; Y3 H9 C% ?
let j 3
) R; `5 c/ Q, s4 k5 |* g5 dlet sum-money 0
  `4 i- ~  u+ s! h) S* o7 ?while[j < [trade-record-one-len] of myself]( }& v+ h/ m! q. T6 P6 a+ X/ @3 k
[& \: c- X8 C# m0 I0 T
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
0 y8 Z5 t3 r) b( N8 E. r3 xset j
; h& p4 `* }4 Y6 p2 F1 o8 j( j + 1)

1 @  N8 w( Q+ P  _& m' c& E, H]
% C  v  O3 d, f5 g5 k& f) |6 N- jlet k 33 O6 k6 {* c9 v8 k
let power 0
; @! `0 _2 ^* w( A# ]( Blet local 0
1 |8 a, R2 k* y+ Twhile [k <[trade-record-one-len] of myself]- d  E# q& M# w/ E( X
[0 f# r$ G5 R: A& o# j3 Y
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)
- T  }' v( f8 v0 uset k (k + 1)
8 N% \8 J# N$ i# J1 f]
5 e: H9 V9 a% h" ^) M7 Hset [local-reputation] of myself (local)7 [! Z, v0 b% h* d8 y
end7 k( v" @3 K6 F

2 G  s4 u9 x1 Y) qto update-neighbor-total3 M& G% [  }. c  g! t

+ g. Q: J- p4 C1 U! C5 {if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; Y5 `7 t3 S+ c+ f; C+ a( V: w
; k4 Z2 p7 d) V% ^* J* s* q
' z4 w- y8 v# U1 Y# z5 H5 S
end8 g0 w0 g# ?  p/ L" |  J

1 J2 ~0 ~3 L+ w' M4 p4 {to update-credibility-ijl & ^' Q. u* y: o2 t
# L3 R2 u* ?5 ~2 @* P! r
;;
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。: ]( B4 u) i1 ^, {, ?" c
let l 0  k2 t, q' W' M+ Q( E5 |1 E" X
while[ l < people ]. H( c. t6 H- N4 e( o' x1 x8 [
;;
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
+ ]% u! ~; `8 s" |[
# N  t# N4 s; H4 c8 ]let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! d) ~" {. \& o! F0 b* Gif (trade-record-one-j-l-len > 3)
% X5 K$ w! y7 u5 |. R/ [[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/ d* g3 H9 e# l' [1 M
let i 3
5 E' `  }4 i2 w8 llet sum-time 0
7 u8 ~& z' D3 G$ r! H3 d: Q1 g; g& vwhile[i < trade-record-one-len]6 ?3 y/ p- a4 v* H, K8 s- r
[
# u. k2 u0 M5 T2 J3 qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" M3 J% s) C" c1 Q+ l  u* Z& Tset i  |- ~0 |$ v, Q! V
( i + 1)

# u( w' O% G/ E) G  W]/ |- Y$ Q( I- Q! b
let credibility-i-j-l 0
0 H3 X; ~7 R! ~- S  O;;i
评价(jjl的评价), u& z% Y) [- X( R* D1 L2 Z, A
let j 3, p& P6 \/ Z! V* w- b
let k 4
. v+ w  i3 f: N4 z% F3 p8 Vwhile[j < trade-record-one-len]' Q$ A1 C! y$ ]0 K) \
[
. F8 O0 W- n' twhile [((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! U0 A& l; G+ }% O/ Y+ Q
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)! n: y5 v* Z6 r  e6 r' v$ J
set j) B) @2 D) U- I! J/ r
( j + 1)

; h$ ^* S* ~' Z0 H$ E7 Q/ @]' R( f7 H- m. ~0 u, A
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 ))( G7 z' u( H7 X) X3 T$ K% M. s8 K" Z

" B$ c  X( m, h/ g8 Y

! _- N: Z& u8 `4 z0 \" elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): h9 J! w: p7 L; y! j! t
;;
及时更新il的评价质量的评价. S4 U2 C- u2 k' k; k* T- O' T7 O
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 C8 W  z0 I) J# ~5 t
set l (l + 1)
0 _: y" x' Q  B; `" W]" {  u+ w/ L2 H+ s
end
9 B; q" G1 }  ^7 Y
& v0 O1 g; ^, C1 k7 Nto update-credibility-list; l9 U3 @/ B% I7 U' C- b
let i 09 `0 a& m" a- E- p
while[i < people]1 I( ^6 p- k0 {8 l
[6 v/ X& `: {% R1 a
let j 0
7 c" ~4 ]. d, M& C8 m0 Tlet note 0' V! C% F$ j$ X$ n/ M8 _- \
let k 04 a" K5 X# l) `; u) r$ ~/ P* ^. Y6 {
;;
计作出过评价的邻居节点的数目$ T. W3 h  B6 c  Q( s
while[j < people]
  W6 o; k! [% E2 r[
% b! t+ m0 \* h* Yif (item j( [credibility] of turtle (i + 1)) != -1)0 q6 r3 z# ?$ Y: o1 [
;;
判断是否给本turtle的评价质量做出过评价的节点6 `1 _& Y2 b% w8 x
[set note (note + item j ([credibility]of turtle (i + 1))). B* I1 c6 l" I" ?. C
;;*(exp (-(people - 2)))/(people - 2))]
# ]) ~( c' f$ F$ S
set k (k + 1)
5 T2 A$ c- ^- L& H, \]
& s& }1 v% o9 \$ m! i& nset j (j + 1)% _0 J' \0 ]- H% \% d/ K
]% f) Z0 `, \' t/ t
set note (note *(exp (- (1 / k)))/ k)7 n- k4 w5 ]! r. T7 U6 F
set credibility-list (replace-item i credibility-list note)$ M" \- e+ w7 q& E, Z& v8 Q) {
set i (i + 1)/ j$ U% c8 C4 G- P7 J$ x6 I4 V
]+ }' K3 m5 k8 o7 l
end, T6 e" A) I. ~6 V/ k# f5 M

3 r, ]9 Q7 l1 T$ Kto update-global-reputation-list" I  X: g% k; Y' E* ?
let j 08 V4 ~% E1 z+ E
while[j < people]' g5 I9 [  ~) e5 K" n/ C8 L" G
[" C2 Q* Z& R- S; B
let new 0
, \7 _. Z% Y: Z- A5 S;;
暂存新的一个全局声誉: d; S) g. H' v/ f3 Y4 p0 K$ m
let i 0$ J! o9 y/ d2 }5 Q
let sum-money 0- W: f9 r; j& I+ w+ W
let credibility-money 0
& w* Z6 j4 i6 ]: ^2 \/ Q' F% fwhile [i < people]+ k+ |2 |- g, L: ^' P3 t( \0 O. ~
[
4 g0 p) W/ K' rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): S' E1 z: s7 f7 f9 p) }# u! l5 C; L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 u! a( m! d+ P$ R3 j. m
set i (i + 1)0 p8 O- p, o, g2 P. i# C! `
]
. q9 P: b$ d8 [7 ~: plet k 0
( Q# c7 \: u& Y' d) J# y$ Clet new1 0
  [* J+ R7 Y3 N) l! Twhile [k < people]
& s& L0 e- L3 b4 L' L5 O[% m. ], F& R( |, W
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)
4 z7 J: H0 |1 f' m" e6 lset k (k + 1)$ f0 Q1 ]2 n9 ~  U
]
/ R$ r0 G8 l) {6 X3 xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' }: }6 N* ^) z2 @5 b" `
set global-reputation-list (replace-item j global-reputation-list new)- q3 j/ ?* c+ I
set j (j + 1)
+ l6 `! \  A2 J; m; X+ g  x]. g7 c1 A- g  \; o
end
, v% E( W* j6 b: D$ S7 B
/ B8 \" S9 F! }' b% H
4 m0 h! K3 \, P( Y& [) E
' m4 z+ B  t2 t& m3 kto get-color
5 R" @1 f9 e, D4 P- b
7 H) a& [3 m( I; r+ j" }( v/ eset color blue

+ H4 s9 g5 @5 ?end0 C1 b3 ?3 T/ d
5 T0 O$ g7 v3 e9 b
to poll-class! Y3 B8 B0 r0 f
end
2 d9 l* V+ |$ B3 o3 p; Y6 L% W- |5 ~9 o, e- p1 C5 i
to setup-plot1
7 Q  G6 D; Y: U
# m/ `% w) T; o% \; l7 Gset-current-plot "Trends-of-Local-reputation"

& Q. X; j% l. T4 y4 i' `" N8 m7 G
; t: T& J  K7 J" pset-plot-x-range 0 xmax

- b" l' X' t" F2 F6 L3 D& q, n
set-plot-y-range 0.0 ymax
* s5 [7 l0 _& ?
end) ?/ Y) q5 [4 ?: c, G2 X
* u1 `0 M4 L7 l5 [
to setup-plot2
& }3 O+ J- A3 t$ E0 |" l1 B# u: n  y9 j5 l
set-current-plot "Trends-of-global-reputation"

# x% D( A, F8 d9 o7 K. ^% }
& X/ i2 L3 X* M/ Eset-plot-x-range 0 xmax

7 V, R2 L+ @8 a' _: Y! K- h6 P( B" l7 M% j5 [5 ?% k
set-plot-y-range 0.0 ymax

, C! O" k7 W) {6 bend" q( s% l. c% K3 X5 ]

; L* l4 v" }  j) Gto setup-plot3
  s$ [6 L, K5 t5 F2 \, o! L( A! [. Q- U- b2 F# x& N- R' ~/ i, G
set-current-plot "Trends-of-credibility"

7 k# A2 c; Q& T2 b- ~# K" n* k( h& I8 A1 ^6 ?6 R
set-plot-x-range 0 xmax
6 w! {8 {& }- @6 }# Q& L+ _
8 z( p/ g! V6 a3 m+ w- |; F4 j
set-plot-y-range 0.0 ymax
$ I5 q7 ~% s/ @4 T3 z/ K
end: \/ N0 R6 z2 j0 r; }+ H8 A

5 X; o2 W6 _- R- fto do-plots
, t4 L: H& o* B) r" H' v/ T5 N6 a+ iset-current-plot "Trends-of-Local-reputation"( J) W5 y6 J  z( s1 N
set-current-plot-pen "Honest service"4 ~  f6 s0 q6 p1 S7 R/ d1 |
end
  R, I" ]' y8 Q0 D+ P0 J( b0 n0 N8 E( E- L3 J5 h, N
[ 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.
5 w/ @# T6 E4 X# W0 K) o1 y. B' x
6 A( A0 @1 [: l, G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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