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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:0 M7 ?; ]3 a, j+ e( u
to do-business 9 b1 c1 c  W0 V" P2 d; w
rt random 360' x$ c6 P+ d( z( Z4 a" l
fd 1
. h4 F6 L6 c: B& ?$ x ifelse(other turtles-here != nobody)[* q) [# E2 x: ]1 W4 K
   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.( a. _1 a' I0 K, H  R
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ \, u+ |- F: [+ w' W9 z) J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- l4 S4 C  h, _. {, N
   set [trade-record-one-len] of self length [trade-record-one] of self2 s% e2 f3 K- `; n( B) w1 e
   set trade-record-current( list (timer) (random money-upper-limit)). ]1 y- B& u0 G' m+ d- E$ F

- d6 \/ H+ i) _问题的提示如下:
$ G3 M" B/ ?4 k. d
6 ?5 S' _  e) n. |error while turtle 50 running OF in procedure DO-BUSINESS& k& L6 W6 \* Q6 `. Q3 J
  called by procedure GO
4 o# p5 x$ k6 [- _* t# F1 ]OF expected input to be a turtle agentset or turtle but got NOBODY instead.! g. j6 I( e6 X+ F8 u( Y
(halted running of go)$ d( L9 c6 ?/ u
6 j- F! g1 p" \' c4 D1 F' b0 k
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~~# M/ f, x/ p4 R) A% 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/ r. R2 `+ h" A3 k. H
globals[  _' ]+ |% H9 q1 [. p
xmax
" b9 g' [; f! m' R! j8 L; oymax
% U0 }. N* H& }; S. m# B9 m; hglobal-reputation-list5 _- j5 Z$ H. K+ y# O9 b

. Q; J7 p; ]# M, ?6 g;;
每一个turtle的全局声誉都存在此LIST; m0 y/ M# @" r
credibility-list; H: b5 Y. G7 D6 h8 T, ?
;;
每一个turtle的评价可信度
7 ~+ P5 [. ]1 _& y3 ehonest-service/ _: z7 e" d3 t8 g9 T4 v; X3 a  o
unhonest-service
; z$ `3 U8 \. C2 zoscillation
/ F9 V) Q, H  `) r7 Irand-dynamic
' `4 A0 Y) L6 }- d* @" O]2 [' _& k  Z7 q6 i9 V" R
/ u  Q& g: _; W9 ]
turtles-own[
% S& T, Y2 [+ ?* ?8 o- b/ [trade-record-all
4 t0 b& R& u4 \% e;;a list of lists,
trade-record-one组成% d0 G9 H# a( q, h; ^9 i  ~3 ~
trade-record-one% U9 i* |+ s' g4 Y6 u$ V
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, q. |- t" l  J6 }3 h/ H; W

* L, z, b. t$ a* q! E9 w& |;;[
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]]
* R8 u% `  x# v* S" S( H) Otrade-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]
. n' n/ b( M$ \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
1 }4 Z2 J5 D7 x6 n8 T, F# D, O8 Hneighbor-total
% L5 m! J4 O) H" u! u4 h;;
记录该turtle的邻居节点的数目% a( A6 m+ p! l# B6 l; D
trade-time# v: I& t* T7 X9 s( ]
;;
当前发生交易的turtle的交易时间3 N: \+ Y# U$ y
appraise-give# N5 G6 S9 e1 T( j7 V
;;
当前发生交易时给出的评价
" s% R: m( \/ X$ c  `& O/ wappraise-receive/ L. o9 r. d1 R! k
;;
当前发生交易时收到的评价
2 a. x# ^: R% r# F; uappraise-time
" T& x1 @% @# w$ W! K. C( N  ?;;
当前发生交易时的评价时间
  U6 K  v+ ]* x3 @local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ h# S6 g) u: q+ t& h: W3 |$ xtrade-times-total
  e( ^) s9 n/ J- J2 [7 {;;
与当前turtle的交易总次数
: B) p# u& ]" S, H9 z3 B; T$ e# otrade-money-total8 r) P& f! m% a' R8 z
;;
与当前turtle的交易总金额
' y3 w9 z! ?: z; elocal-reputation( V" A1 Q) w# L; M& I
global-reputation
( y' h# ~/ [& ?5 a5 L  t. `credibility
' x9 t- Z+ [' b4 J& u" G* q( ?;;
评价可信度,每次交易后都需要更新$ X5 I. A$ P* b
credibility-all" ?+ |% n! F9 h) [5 F; T# Y
;;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 J8 c6 n3 l8 V) z' W2 t1 j
; q+ s8 V- K2 B1 e$ W& G& C6 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. d2 i. y- Z# @; w" G! l. V
credibility-one
# u1 }* k7 u: k. O2 \* y+ M;;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
8 `3 S7 A; b: t7 Y3 C# D' U( iglobal-proportion, x, C1 g! C  \
customer7 _3 q9 e# X: j. m+ @$ I6 D6 ]* A
customer-no
* s: {. H  {% y/ I) J0 k0 `: otrust-ok* w+ q  D5 l! L
trade-record-one-len;;trade-record-one的长度1 ~" U. v! T% V$ W+ v
]" c1 ~; \: B6 B7 H; P+ b

: A( a4 P; P, u/ J' V1 q;;setup procedure, C* @8 k' p7 `6 H

9 Y! s9 Z1 a* z. x6 |to setup0 R' [; g- ]3 K5 k

) O% g& V) g( f' n+ _! _  bca

  G- ]/ P' W/ d: F# i
  {4 }- F; q+ q/ `& k# Linitialize-settings

8 @9 |2 b1 @+ p, @# e. K: N$ c, ]1 t
3 h( r% S$ f+ K" n2 ?4 p2 G. c0 rcrt people [setup-turtles]

0 C9 P1 M0 T4 ]( X
/ X) }6 x: Z) O( ?reset-timer
8 U+ s" s( }% l1 d
- P# Z9 m( X# i# o1 K4 p; a1 x# W. G
poll-class

' d7 a- Y* s0 R$ \$ V0 ~2 [8 N6 x, g/ J& L% c0 H, G
setup-plots
/ h% K2 l8 i5 V  |/ p4 R# ~# d( n
$ K0 I4 p$ \4 g/ R  ^
do-plots
" E. L$ H; Z" e3 B+ ?/ I# H
end
( |' K& Y9 M3 c1 j- b/ I" s2 m3 N  ^- v
to initialize-settings8 U& w( J# n9 b
* `6 f2 M" K/ p8 v( r8 _( X3 Y
set global-reputation-list []

) D. @% P. Y" J, d+ b) \8 ~3 M1 X9 B: W$ L0 f6 ?- r
set credibility-list n-values people [0.5]

5 K. a! j  T& Y7 N2 V5 R7 E: l0 G: _0 E* g
set honest-service 0
. z% h! S& S2 Y3 t
/ m# L6 h' k1 y6 M$ e
set unhonest-service 0
3 ]# O5 ^9 K9 }7 |- Q/ q

, G5 |3 t7 x8 B6 }+ y  rset oscillation 0
" P. S% B0 b$ w

' V8 U3 P5 a/ @* b: tset rand-dynamic 0

3 |9 P  e& H4 r9 uend. ]2 ?0 A  t( k8 v0 Y
6 ]! H) ~  Y' e9 x2 Z
to setup-turtles
  K% q3 W0 e2 x/ i3 Mset shape "person"
% h7 f' m& A% M9 S. ~& Ssetxy random-xcor random-ycor
, u  y2 I" k6 ]7 n& {set trade-record-one []
: G, T* e5 q9 `/ u4 R3 H
& W3 o, w- Y/ K8 }: T( [5 U
set trade-record-all n-values people [(list (? + 1) 0 0)] 2 J8 f; J! M6 ^; o2 z/ ]0 z7 k
1 y3 j# W6 q4 d6 x
set trade-record-current []
0 j7 h+ B: _% I! p6 x# B9 W. Gset credibility-receive []* z4 z, @! k) X* d# v
set local-reputation 0.5
; K, F  J& n- J! U0 uset neighbor-total 0
: P' g5 U" r2 {0 y4 _' r" x/ hset trade-times-total 0  ?) _( C. w# j* D& x/ ]5 W
set trade-money-total 0
/ X8 R9 y3 B' c8 dset customer nobody0 X1 r6 J2 N* |0 Y5 I3 T, w
set credibility-all n-values people [creat-credibility]
8 c5 W( p, j# ]$ m) }4 ~set credibility n-values people [-1]
+ J& F; S2 ?: yget-color5 ?4 M( l- U! i( T1 q

3 i! n8 \* ~% o* ]0 ~end* v1 l* ^( ]7 V
$ m  ~( D3 `9 k: |' ?9 ]
to-report creat-credibility2 B- K( S/ ]0 w3 |# p3 L7 l
report n-values people [0.5]
1 f/ }# G' {5 mend7 N$ ]: c! m% I5 z9 Z8 ]

" Y/ I" Y! Q" a5 U' kto setup-plots
4 M. {5 T0 k0 i& G. Q* X$ U* c* `* Q
0 S8 f7 D( S; R; \set xmax 30
5 d- b9 U1 i- g  G. K( C- d# _9 ?

- n: r, Q# K# ?5 ~/ w: o9 iset ymax 1.0

- Y" q( }2 V* w' v
4 i7 W1 p9 b  ^3 ^% E1 [5 bclear-all-plots
2 j/ ]# I5 A3 }( M! A& e
: s; u# J2 J) ^. q. T
setup-plot1
+ P! t5 N( v4 ~( S- k5 F/ I  x& J
0 O7 T$ y( t4 ?1 l2 R  c3 |6 F
setup-plot2

6 U5 I- v9 D# p9 H. l2 o4 r( F4 E0 F0 |+ |. ?4 o' l6 |" p
setup-plot3
% W; k* q6 \5 l8 j" Y
end
, o& O1 H' Y* A$ u
  K& z0 b. \4 `, e$ s% y& K( k6 l;;run time procedures
# b& i5 p8 [+ H, g3 g3 D8 D- I$ V; |  X# D6 T3 l$ j, M- Z9 l" R$ V
to go
0 x+ ^( N0 i& Y+ C! B" V
7 q7 T; T, K/ f6 k/ i2 [ask turtles [do-business]
0 Q: ~/ c8 W! n& ~8 P: Y
end
/ b8 s  B0 B- f* R" g$ P# @- ?
/ u" _, R# R. R7 H# l' ^to do-business
. q" f& o! M% _9 l2 z/ F. ^
2 |3 P* a% m6 [

% e; O# O1 z- z% H2 }0 Ort random 360

0 ^2 p6 v! p2 o3 @- L9 B2 E8 r, y" \; E
fd 1

  x) M( _# S2 r. g: i$ Q, n' L
# z+ f" n( \% j9 Rifelse(other turtles-here != nobody)[

) U% i$ J. Y- k6 i9 d4 v
0 V% W7 `4 u$ |set customer one-of other turtles-here

) ?' ]3 ^8 U" @$ }1 J; \; c* {# ]6 q( g2 K& L
;; set [customer] of customer myself

" Q1 g8 L7 c: ]3 k; u  z" N! s. f
* a/ o$ l" I3 K' Fset [trade-record-one] of self item (([who] of customer) - 1)& q$ k% g" |: F" c' P2 y
[trade-record-all]of self6 F1 q0 i+ c2 i& _  J& P
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. `: r- p6 r& ^0 s
4 A6 u! A6 v$ b) g: ]7 m
set [trade-record-one] of customer item (([who] of self) - 1)  A' H5 s' T( e6 `3 Y) u+ B
[trade-record-all]of customer
1 m- k$ y& n- E# W: {

- j: n3 {  [% |* q$ x( x  K; Xset [trade-record-one-len] of self length [trade-record-one] of self

% I( O& w& y& v! z! F1 J' q$ w% O: v9 L1 m9 t! {  W! s! l% Z9 v1 Y
set trade-record-current( list (timer) (random money-upper-limit))
3 g# o9 `0 e7 u" J$ V8 j1 I/ H+ n
( ^2 `$ L: f& {: f: O8 e
ask self [do-trust]
& l) l0 B8 ?3 E" E" H' m;;
先求ij的信任度
- M9 l0 v/ x9 \; g  U& q' W4 Q
# U  b/ `9 G3 C. rif ([trust-ok] of self)! r! i& U, C% h" M5 g2 q' t
;;
根据ij的信任度来决定是否与j进行交易[
5 o( V, D* L* L! ^ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 O) C# {1 c4 ^8 V/ Y7 t, G/ ]3 P
# \( }' m6 i& j; ?% h: P3 r
[
- v3 t% W& A2 }  D

0 }& J- ?  {6 g$ y! Rdo-trade

8 q, x1 b# [; D' s( K" V7 G" e6 f4 g' ]
update-credibility-ijl
2 P( b7 O9 K4 J
/ j' L& C) q" j$ h
update-credibility-list1 I: S6 L1 q1 \9 `  l3 n- \
) O. V! z" O, T8 i) W1 q- n
5 ?/ w. c; u0 M, N" @5 W
update-global-reputation-list
* g2 @- u, |+ {. Y, n

  }5 r; |6 q$ o# u% d3 ipoll-class

4 H1 L0 l5 u' f6 ^4 ^' L) a% `) ~
get-color
+ W: i/ y3 D" D5 U% ?/ u  E

( l9 p# P6 t$ U$ R6 H. n]]0 ], D6 Y4 Z5 x2 |  g& }
3 Q0 ]- l3 F6 Z' j5 v
;;
如果所得的信任度满足条件,则进行交易
, N. ?8 w! @( P' R4 Y
. y: m6 a# m3 j4 \  I! e8 B( r[

3 Y5 l( _# G6 P7 W3 p5 ~$ i
) P: Z& w- x0 w6 i  Y# J9 X% Lrt random 360

! @- |& ?8 x! y/ U5 z1 v7 n* Y/ X( G% ?8 g7 d. _
fd 1
6 J; ?4 I1 r, l2 D

* K; i; O, o, a' n9 P]

" u1 ~5 y) v3 V7 |  s) ?7 ]& L; K9 p
; |2 |  F# n  L/ W% T4 T5 B" _end

; u, R8 V4 r3 a6 h( K, W! |- o
+ h( Z* [" v2 V/ N7 P% d* ?to do-trust - I$ M% y2 `$ O* j& k. c/ Q
set trust-ok False  Q/ m+ S! O7 j" r+ K
" K; F' E4 t; O- w, \0 k
2 \8 l+ _' P+ Q; e0 T
let max-trade-times 0
, W$ W( x8 B  c) V, t1 u" g- mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 [7 o4 y" h: L2 J9 i* G* [7 Tlet max-trade-money 08 [4 n, c" B. C( F
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 m" ~# {( h* C8 {) G7 H# x, W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ f  J  L, L) [3 E8 r$ A. n2 o0 ]  m0 s
+ w: [) l2 L9 B/ z
1 Q/ E: s$ Y2 o" X" \/ S
get-global-proportion
! r6 }  [5 h. h3 x4 [let trust-value% x+ C' ^% r& G! Y5 `3 E/ O
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)
, p6 h6 x$ i3 y
if(trust-value > trade-trust-value)$ `# |2 C% P7 w6 E- O+ W( c% Q
[set trust-ok true]
4 @* O( d# D1 X4 k, ^, mend6 M" m" Q! P: [, o% ?3 Z! ^& Q5 H
2 M) R5 x% }& v  c
to get-global-proportion$ b+ [# c) q5 Z# W$ T2 C4 Y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 T( c; o" b. u" v$ r2 s! N
[set global-proportion 0]9 t) C( |. W) A
[let i 0+ L9 n: l/ K; {& C; ^* H$ W: z
let sum-money 02 W- i& y0 p' L, k: |  n
while[ i < people]
* i  m, I. }0 e6 z8 {7 k[
. O8 G4 }" j* c5 N/ c5 |if( length (item i
: S, R/ x0 G- Y2 o& O) R4 {0 d7 v[trade-record-all] of customer) > 3 )
2 F. ~! l7 U& V5 L1 S
[
' C: L; X$ g- W5 J4 C- s9 R# `set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! K) E) d2 r6 k! W8 A) n; o]
0 ]6 e. @( N- d1 R2 F& o/ h! S2 }]
# F/ A8 \" G& i2 q2 ^0 `: rlet j 0  F/ b4 R/ r7 I9 [
let note 00 U3 J  G7 [5 f
while[ j < people]
3 K* n4 {0 [! L- [4 C3 G# w, l- g[
' i( V% |% v" hif( length (item i
0 p9 S( v8 v$ @. U[trade-record-all] of customer) > 3 )

# ~4 \/ H4 _) [. n9 p! G[
' ]0 I+ N9 `+ {# ?0 Jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): ?( w8 N  @) m5 m/ z- K3 @5 o
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  y+ F6 i' ?+ v* [1 G, o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' I% P: |% l* S2 U" c]0 y0 L, y/ y2 E1 v! ]' b! V/ {% B: L- Z
]3 k0 F8 P, `1 g' e
set global-proportion note: w* F: |3 a3 r% M1 }. h
]. g! u5 k  f0 c1 D  ]- v6 A' d% a
end
% A4 N. p3 F( M; Q5 p, z4 ?- x0 l
to do-trade
" c5 C7 O, W" }- [, D;;
这个过程实际上是给双方作出评价的过程2 {4 V2 _3 b  }5 l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 M" C8 |7 s: t  q  v0 R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 n' F" s, A0 w' o1 n, |3 [set trade-record-current lput(timer) trade-record-current
& \; g& R, J# c1 {2 m0 L  Z, h;;
评价时间
# C5 g) {/ ~$ |; Iask myself [5 a6 f9 e1 j7 m  S, k
update-local-reputation
! I0 x7 q2 z8 Y* zset trade-record-current lput([local-reputation] of myself) trade-record-current4 r, a1 Z. v; X* i' C& ^1 j
]1 s% z3 ]1 r8 T7 m) s- H' g  v
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 G- g9 C1 Q) ~* B6 W! Q
;;
将此次交易的记录加入到trade-record-one
, n, P4 r6 ^2 n, y, c  @( Xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). s) F  x  a: s: J+ s8 I, _
let note (item 2 trade-record-current )% R- K% d' U9 o
set trade-record-current
2 l8 B5 K9 _6 a; L6 s* Q(replace-item 2 trade-record-current (item 3 trade-record-current))
% w/ h  Y- ]6 k
set trade-record-current; a9 [( A7 Z; J8 W; v
(replace-item 3 trade-record-current note)2 S6 l! x, z9 H$ [( W% ^6 f2 i% Z3 T# G
$ W$ q3 H4 T4 i8 H1 @5 d

0 d* R  ~6 h6 Fask customer [
$ K' w5 r) l) Y+ oupdate-local-reputation/ i/ A5 u; u) i$ K8 M, S" m
set trade-record-current3 g' {; b8 t8 M6 Q/ g9 T1 g" D& n& ?  ^6 E
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; s: s1 |5 R0 H6 ~
]; P4 c, O& \- j

( ?. S6 F+ k+ ]

& h' Z5 L( d# t  p& |set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ L2 |: m% S" Y, \; O

* P! M0 J. y6 ^2 H! dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 a( \6 Z+ R' B! w# W9 m;;
将此次交易的记录加入到customertrade-record-all+ _2 G: `9 x9 I
end. F* `" d8 l& ^( s
* l" e8 H3 ^0 X- Q! K! s2 D
to update-local-reputation+ j( ]( a: `8 \+ R/ J
set [trade-record-one-len] of myself length [trade-record-one] of myself
- c. P- [5 G3 t% ]) J" I5 j  F) X
& w6 J) C" [; ^% {4 [. ~2 O# @! G. Z% C0 [% M# H( a& `
;;if [trade-record-one-len] of myself > 3
$ Z# v  E# p) G( U
update-neighbor-total% H% E, B; [) s9 D
;;
更新邻居节点的数目,在此进行! Q1 |+ k% @* K5 ]
let i 3
- U2 R6 V1 m6 {: u7 P- a3 Ulet sum-time 0, b4 F. E+ j- m9 @- C
while[i < [trade-record-one-len] of myself]
/ Q. ]( w5 s3 u[0 {/ y! N' d% W$ b$ r1 H
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 W9 I- n; u, z1 b8 `  [* D" Wset i! b' R: [5 d6 N7 b
( i + 1)

! H7 J1 C0 A4 ^& l$ ~* M]
0 I, X, o! L3 ?5 S/ L! S% Qlet j 3
8 ~5 k7 X0 V; f* hlet sum-money 0
6 R' N: e, S0 T6 hwhile[j < [trade-record-one-len] of myself]
2 G- E- m9 V: v% y[2 j- Y4 E8 E; _
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)
3 ^! x, ^; X5 l+ V- o' l- h8 [set j$ t; G3 _6 T1 _9 h$ Z% \
( j + 1)
# @' b: U$ J7 @0 {, w
]
: f1 g7 l5 V0 P. Mlet k 38 s" v" H% p) J3 n6 [
let power 0' v: h1 l; }% V) q. v9 E
let local 0  M0 d: _% R  w/ J
while [k <[trade-record-one-len] of myself]
- ]4 _, X8 y% _[
7 x% B6 n) {& Q1 M- N8 @3 m% j/ Bset 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) 4 {" O" H/ K( R! e) h- q
set k (k + 1)2 u( `3 @2 p$ L% Y: A
]
4 g. ]2 S) Q. f, P4 ]! A" Tset [local-reputation] of myself (local)
4 s: c- H* l2 Bend& l7 s/ ], `4 u7 Z) u

, M% L- B& v. x, w4 _% q0 |to update-neighbor-total' ~8 q% o7 [) R* ]$ e- u, r6 X; O
3 C  Y3 y# o1 [( D
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 i) U7 S$ e. u1 R5 f- y" F9 s+ ^- M; P. h) P3 Z+ n

2 p( C- O$ |! a- Uend
/ Z8 H/ W8 w2 \/ |" |7 e; d: Z, T# b; H2 a2 k' r
to update-credibility-ijl # X3 p6 [$ W$ F9 Z$ s; @+ s& X5 F
% q6 h. G% |% k8 m2 i" c
;;
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。* L! u3 x- M5 \6 g; I8 l
let l 0
; Q6 q3 i8 v( S$ I! Kwhile[ l < people ]6 X2 @+ j" m: h( N6 _
;;
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
8 I( S; r9 C' z" X[% q$ T0 ?" o" C
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! ]/ P. I: z3 Iif (trade-record-one-j-l-len > 3)
- m. \$ m+ T1 P[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* N. |# L# Y+ i4 s* K: e& }
let i 3) @) H- p# p2 [" ]% e; W
let sum-time 0/ O- x) b- @! T' t9 a4 F
while[i < trade-record-one-len]# J5 x/ @' K" \9 D/ z# M9 P0 z
[
4 W: G' W* Y5 V& {set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% y3 ?; Y& m  I+ w4 v: \
set i
) [  A  a4 b! o- t4 O8 b0 a  D( i + 1)

( e! v& m( Z6 i: f]  u! \$ x# t$ ~* \/ \- P" U: D
let credibility-i-j-l 0
) i4 w* G/ ^# t1 D& M' u5 L3 W;;i
评价(jjl的评价)
* U2 P1 |# s( E8 R: ?0 ]( ?3 olet j 3
: u8 o( v, m8 o/ X2 M4 J9 X' Ulet k 42 y2 ?, P) {$ n% E: w- L
while[j < trade-record-one-len]% M, B2 @& J4 P2 d
[' I# P8 y* D4 F# p, U: z+ f/ r' N# 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- X; V" W; Z  |' V
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)
4 E( R$ G& @, \" \& fset j
9 W" }% F! {$ e1 C6 C3 C( j + 1)

" j4 R/ P& t( Z* f* y$ Z]
: J5 x# R4 l+ a* [$ d( qset [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 )), @3 E. x: Z% ], ~( |, \
' P  O+ C/ v: d
1 i, A8 k9 k+ J( P
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" ?5 f% G3 E) r: s
;;
及时更新il的评价质量的评价
! m6 [/ p, ~# y9 `9 D& V: Fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 s2 X# T. J# ]0 R! I8 _* Vset l (l + 1): i" Q5 j) ~% u/ C! a) m
]* y4 T5 g" \; @( U+ K! o
end" t: q+ p9 K. w: N9 [
7 U. V: M8 `! {) }( C" F! q
to update-credibility-list
+ p' m5 z# x* d* o0 u1 {: Klet i 0' q: W( f( F" U5 Z4 ]
while[i < people]
9 {# `8 R4 [- I" t[
$ u' I9 L: S) p3 `% r  Ulet j 0
' ^" l4 |9 V% l% Jlet note 0* W" j0 S1 y% v& S0 Y* v# J! u
let k 0
/ F- T* z+ g3 b/ o! H% i$ J3 q; {;;
计作出过评价的邻居节点的数目
0 e: T7 W. J0 y9 v6 h# n1 R8 gwhile[j < people]  R) E' ?# I, [/ o
[3 d4 f) D& a! N' h( S+ @
if (item j( [credibility] of turtle (i + 1)) != -1)8 q. L" z2 F' f/ B: @8 V& l
;;
判断是否给本turtle的评价质量做出过评价的节点( n+ i" ]+ s! T+ }" {! {) f
[set note (note + item j ([credibility]of turtle (i + 1)))
' k9 I' s$ y( y- s. `;;*(exp (-(people - 2)))/(people - 2))]
. B9 p1 b( M- O: S1 h* ]
set k (k + 1)
" j7 M. Z' _1 V" B0 p4 s]
# g1 P: u7 U5 I! m# a9 B8 `set j (j + 1)0 p. Z' e. o/ f7 v9 u6 ~
]* ?5 ?( C  o7 y* _. q
set note (note *(exp (- (1 / k)))/ k)) \% G  o$ l, B1 U3 J7 z, w
set credibility-list (replace-item i credibility-list note)) `2 o4 ?4 r% b
set i (i + 1)
. E3 A2 e! ^% E$ _- x& z) w2 O5 m]
- s" N' F3 w( s5 y8 A. Eend* E- T. F1 v6 i
7 A! y/ J$ j5 {3 z+ ]: H% x4 j$ E
to update-global-reputation-list# f( o* m" G+ K1 Y2 I1 [2 X/ i0 W
let j 0
+ L! {3 `9 o5 L0 p: awhile[j < people]- l; o8 F: z# Y( }1 g
[% E- |3 z1 B7 o0 Q$ `0 l+ u$ H
let new 0$ ?. r0 b2 I) v; c) N
;;
暂存新的一个全局声誉* ^2 }7 E$ L' v" I5 O& `/ h
let i 08 f. n" }+ t( C# Y
let sum-money 0
6 T. |  }% T5 xlet credibility-money 0) O. k. v% K. D+ l% d& y4 [
while [i < people]
* Q% E7 Y' _& X  i[
; q. u4 b1 `7 _- `set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 N3 z# Y+ r0 i% l
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. d4 @4 w) V- N- M8 P- c1 dset i (i + 1)
0 P# \! s& O# w# E' u# W]
- C3 Y' r. @2 o' R% Q2 llet k 0
5 j* V9 [( C0 }, Vlet new1 0
- A2 P. _) G4 F) @while [k < people]* J7 Z0 N% |( R8 B5 z: F- |
[! b! ~/ a$ b( J, c9 p
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)! Z, ^# N" L+ U; X# j
set k (k + 1)
* i" T. J( i; D6 P% m]& N1 |- G' M% J' g* L+ Q3 G
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % c9 a, s/ V9 W% P
set global-reputation-list (replace-item j global-reputation-list new)% x$ b3 E# F+ {" S3 Y5 i
set j (j + 1)/ i" I9 b$ D' ~" E$ `. M7 i' c
]4 y/ p" c8 a8 n% e; @3 v$ w6 F% M
end. [" g% V  o& C+ Z
1 u, F# J! o3 s- k/ S/ I, ^+ g! D

$ {( i& B  x% M( @  z/ q+ T5 m
& I5 f/ U) z. t/ lto get-color2 z2 p  m  E" Y7 g
8 q) x) R% \; w2 t4 i( _
set color blue
" U+ Z; C) j) o
end8 a# f! h7 w3 B) G! f0 Y
$ B6 @) `' D* _" ]7 M
to poll-class
+ F) F% q% x0 Y  l7 g# ?& nend
* h8 v' l- f2 c6 ~+ W- ~$ d
( W6 l( n' s6 X$ Y/ L* C  zto setup-plot1
. H. x" q$ G0 ]) N% d5 a
! S% V( p7 X' b' _set-current-plot "Trends-of-Local-reputation"

, ^2 G9 a1 ^% l3 S- ^: w+ @' C/ ?! F0 I
set-plot-x-range 0 xmax

2 E- K0 i. _7 t# W7 l
9 M  R: Z/ @) b$ _+ [set-plot-y-range 0.0 ymax
, e  u* y2 |4 ~0 Q$ H
end
# T. w! T6 e5 h# }( K6 M! N1 {
& B- \) d& \+ u3 N/ Xto setup-plot26 p7 @5 ]9 I; s8 H  V7 ~9 v6 D4 W$ v

# B( s- ~5 Y1 _* Aset-current-plot "Trends-of-global-reputation"
& h' q8 O9 E( ]# }
! R$ H2 V) r0 D
set-plot-x-range 0 xmax
& X( J( r8 b! B% u8 |% y" N5 C9 ~$ H  R

# }% X" e, c0 hset-plot-y-range 0.0 ymax
/ X: I1 ^9 M. r* ]/ k; [$ j: x
end4 C* Y: y/ N& a4 H6 r

9 ~) Y% X0 d# U: x% rto setup-plot3
# r$ y, [- C7 [
5 U) x& v8 q1 K/ ?5 ^& xset-current-plot "Trends-of-credibility"

, O3 u( S) t6 g" N, ]% F' h7 g! j5 q: N1 b% z. ?, l, G6 T8 I
set-plot-x-range 0 xmax

+ p- t  w2 J7 \+ T: _0 Q8 k7 C( z, t, \: j
set-plot-y-range 0.0 ymax

7 L# d" L' v6 Y1 H4 Fend
  x  r* ~7 M, K6 _/ K) z$ a' h6 i: P. ^3 V# l% b
to do-plots
( f9 U  j4 b2 z" N  Gset-current-plot "Trends-of-Local-reputation"
! g: n- ~2 c( y4 ?, Bset-current-plot-pen "Honest service"+ T' n7 r* \6 M4 f1 e
end
# ?2 k# N( |& H! W0 f/ r; b' O  ?3 m; k+ ~6 a4 X
[ 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.
% D7 S- W7 q# J' m! Y. p8 ]# e% N3 T4 `
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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