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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:
7 q4 X; F* h/ T7 D1 i! l  @+ L7 A3 Qto do-business
+ P! x7 N% L% a1 R# g3 d rt random 360" ~9 n' ]* m: T, x1 ]6 O: b
fd 1. A6 g+ e, t: N' d7 f6 N: J
ifelse(other turtles-here != nobody)[4 `5 Q2 P. ^! b
   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- w7 H0 @) }- D8 q! \( \   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ N5 I6 a" `4 V( l2 x+ [( r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 |& f6 S! P* [7 s5 ?* Y5 G& n
   set [trade-record-one-len] of self length [trade-record-one] of self
& p0 P" B# U6 `( e" x5 {; g' A, C   set trade-record-current( list (timer) (random money-upper-limit))% w1 P" |, t5 v# `

* r, R5 H8 u: M- A- A  |问题的提示如下:+ L4 H" ~6 h3 _- c0 e
8 g  O+ Z0 z9 T7 _- g
error while turtle 50 running OF in procedure DO-BUSINESS' G( E/ g0 z" V! q$ S4 Z4 _
  called by procedure GO
% I# A* m/ n* ], i: |7 a' WOF expected input to be a turtle agentset or turtle but got NOBODY instead.- e1 L& j3 w/ ?' z" m* \3 d
(halted running of go)
/ l) |0 z( Y9 `% ]' ^: O9 x9 W, W: n
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~~; K5 @* a6 a9 V: k
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
% S: d9 U! Y4 ^- `( Q, o$ o% A$ f6 uglobals[
) Q' Z! L6 }& b* P' Uxmax, P. y  K" ]+ l" n5 Z8 Y
ymax
# k8 G+ G6 Q1 P# n1 [& N: `! Nglobal-reputation-list
5 H2 H" F* K' F  o* g! F, O7 K. Y: j  P9 _, Z! P6 S
;;
每一个turtle的全局声誉都存在此LIST+ X3 G$ |4 _2 {' N  t8 o# V  `
credibility-list8 M! ^9 ^: m+ c! q, N
;;
每一个turtle的评价可信度
0 F2 q( _( t! h* Ahonest-service
0 C; _& m8 @0 p0 p4 ]unhonest-service. L; H  C. j! F8 I8 o
oscillation
% g; y; V! X+ {% k' q8 Erand-dynamic) e) f7 |. }6 V3 k9 Q" ~% n0 h
], _! r, i  R9 Z) d
4 n" p0 X. Q4 e9 q  L+ q
turtles-own[
& ^2 v) H% z3 Q7 P/ itrade-record-all/ _1 s2 ~- a& T4 I4 i, g2 f
;;a list of lists,
trade-record-one组成
# t. [8 r# `8 c' G+ t) Dtrade-record-one5 m* E; A  ]; D$ `# N
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录0 L- P' R' {2 n1 M; U. p. `" N
- @$ C' ?' _  {( _& \: M
;;[
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]]
$ U/ @5 s0 l  p/ {) Ytrade-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]
  L6 U% v9 F7 A9 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
" O( O0 ?5 K% n) A2 G1 W9 V  Bneighbor-total8 i# t- C% a" y( F0 k* A2 N0 }
;;
记录该turtle的邻居节点的数目
" I6 `( ^. K' L5 I+ strade-time6 E# G" T# K4 C. l4 Q
;;
当前发生交易的turtle的交易时间
: B! H4 i7 Q1 n9 Vappraise-give* K2 H5 L' R- n# c% i- R: n
;;
当前发生交易时给出的评价
9 v) [% i  \8 k% s5 H: ?; Mappraise-receive
  H$ `$ \$ D+ V. [3 `* i6 h! m;;
当前发生交易时收到的评价1 J, }9 ^+ C+ f/ m. Z9 o
appraise-time5 Z; |0 s/ w" `$ x7 f/ I+ I
;;
当前发生交易时的评价时间
1 _6 V- i# w' j& V: Elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
" P, ]5 _" \  B- N0 M- K& wtrade-times-total
9 B: d' o. g* r5 I, ?;;
与当前turtle的交易总次数3 m/ Q, `8 \1 v6 S5 _
trade-money-total0 V# m3 i3 i& D# X$ L, w; o
;;
与当前turtle的交易总金额
- n! l+ o; W9 xlocal-reputation
. u" W% ~5 a  H; `- r! kglobal-reputation
8 E7 u" v# n, e  S/ lcredibility% f+ U/ O5 O  E! ~! W6 ~1 f+ |/ M9 B
;;
评价可信度,每次交易后都需要更新0 `& T7 q' w' @0 w9 L( y* b- |
credibility-all
4 K1 S: F7 _# _;;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
. W) s3 |  U; p+ Q9 p$ I) l0 n, _& o# }3 A' u4 t- ]! L, d4 [8 c
;;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# T/ B9 g" ]' m& k; X
credibility-one
7 y, W1 a" k4 c- R+ o/ h;;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
% _1 ]5 @" ?: O3 B& N5 q; A7 Yglobal-proportion# r' M0 d5 O& M% f9 q& ^
customer. _2 S$ e9 X9 `' R
customer-no. C& K0 i1 V' A
trust-ok
1 }$ a+ s% m% e# g% Dtrade-record-one-len;;trade-record-one的长度
( T) B/ ^+ p" m2 R: G7 ]+ c# ]]' Z) {4 u9 g: r& H

, g/ B/ B, {$ L9 ~( K;;setup procedure
0 ^1 _0 D* k+ p8 W7 {8 G. C; D! j: j5 `- S+ U& {5 w) G0 E% v
to setup
6 b6 A) A0 {: z8 }( f
' G' b8 |  m  e# T# ]8 `7 ?ca

$ k" v6 z* c4 N% k" B3 p8 |4 N& V6 F4 c
initialize-settings
- K+ ]. J" ?) E# q. W, O) {+ a; B
0 L: N- w! ~4 W- A4 z, T- y
crt people [setup-turtles]

, y! j) s- Q" f  [* i9 ^9 k" V4 u5 H% ?& r* j$ N6 b, F! h
reset-timer
4 g, I! ]9 y; |

, _7 {  ^; m& y7 ^8 Z4 Opoll-class
0 x+ X- n8 J2 v2 g& n9 Z$ v6 w4 ^
6 H- {6 e* e! g) q  |8 o
setup-plots
" X' l9 h2 t9 L: |, Q7 r8 b0 r. m# C

% Q3 j/ e' v: I2 p4 v8 X; Sdo-plots

  `9 W9 }2 |3 J+ J4 qend9 Y. e' W+ g4 S) o+ K  G0 r3 ]: m5 Y

; Y+ _( ?$ @0 c  Mto initialize-settings; T  W) N1 S; [+ n, n; l: Q

% i2 M# R6 D1 Y( H3 u$ R$ xset global-reputation-list []

' P7 Q5 D. g6 s- B2 R& j! N! h
) z! m; D% \; p5 d3 [set credibility-list n-values people [0.5]
6 G0 U+ v1 \* Q& y
: c4 I7 H6 {/ i' k
set honest-service 0

' z/ p3 R. C- z1 R, F, Q
' E( T/ ]* P/ j* fset unhonest-service 0

. W, n0 c1 n) a  m
0 ], Y, B" J* J+ B7 v0 r( Eset oscillation 0

" Y0 o$ X5 W0 a/ d' G/ R
- e1 m) o/ \' Y$ ^/ rset rand-dynamic 0
5 U6 A4 Y) F" d0 Y2 o, c( B: g
end' d" h6 @1 y  \7 Q) k1 Y$ q
* r& g3 Q9 X" y9 i- w
to setup-turtles
1 r. e, ~2 p' e7 t  [- pset shape "person"# \3 [/ ^( B5 s4 m
setxy random-xcor random-ycor9 X; f  ^8 e# A( H
set trade-record-one []
0 g" O0 L4 e7 F* ^. @
- ~1 ?  a- [  C- u/ {
set trade-record-all n-values people [(list (? + 1) 0 0)] % X0 K. N( ?, U/ X

" f7 N/ X8 I' a$ @9 U" dset trade-record-current []
" n; R" G/ K' Q& ]# Y, W' gset credibility-receive []4 E7 x( t0 u3 B
set local-reputation 0.5
) Z5 [  u2 g% r4 t3 Zset neighbor-total 0
$ e. |! u% a4 O( @set trade-times-total 0
# p# d- s3 o0 v4 F6 y" o3 Y1 ?set trade-money-total 0
- d. P8 K4 A9 ^set customer nobody8 `9 ^: J# o; f& m4 S+ x
set credibility-all n-values people [creat-credibility]
# L* p: s0 k/ ~/ V2 sset credibility n-values people [-1]
" ]. g7 l1 I# D4 D/ _0 rget-color
6 k9 J- I" p  f$ Q2 ~! W& K+ B

2 v  ?$ K: G8 O# T5 G" m1 j+ [end
' ^4 S+ ]' d( b" q$ G1 {
& {% G: f: `& o4 ito-report creat-credibility) k( I8 [! \0 B8 [# y
report n-values people [0.5]
" ?2 X* z% }2 L( r$ _end
/ ?% L$ v- Q2 N. S# s/ a/ }% E0 ^. ^/ {/ v" |3 O, S! ~0 E+ b
to setup-plots9 e# s, H4 s% u6 t8 T, n
6 R: |6 R( @3 I5 e; \% f
set xmax 30

  h: l7 R7 {; a1 V2 x! e  R& k: V5 `1 `6 O  f, q& \0 n* A4 F
set ymax 1.0
# a7 R- o$ t" {6 X2 I
$ P) ?% h# C/ K7 l$ N6 V
clear-all-plots
- Q, j$ U5 i9 e1 b. Z9 u

8 G& w6 c: C7 R/ v7 B# e, isetup-plot1
% E) q5 Q6 h" @) [

( y! I/ v2 H6 b4 Zsetup-plot2
" Y4 o% k- U- B! k* u: `) f4 f7 D  i
" o" X$ t: a, I6 \7 J' h4 v* ]
setup-plot3
( E9 T; R4 T/ K1 S- h
end/ I* F( S" }, X) ~$ w5 W$ L# _
$ w9 A0 G/ R. w- ~% J
;;run time procedures1 q+ l" U1 |% O  [8 W

6 j4 G* l' A& L3 j8 [. K2 }to go
: ]  x. _# @) k. a6 p# w, |: ]; D1 c) h& r" x- `
ask turtles [do-business]

' v- V+ ^& J( a4 ?end  I9 {8 [! }. K( v  ^
) o$ d% I7 t5 t: s- P5 Q/ M
to do-business
! y6 p' ]" w  Q# K% u7 g
$ D4 F$ Q6 H, l  f: w+ ~

# B7 y+ A! E5 Q- n" L0 crt random 360
+ a0 r- H7 p5 w2 v, ]
- X8 m' w2 _# v2 b: N
fd 1

( H4 ?. s# z$ w  p& C% R8 ~& G; l6 u
ifelse(other turtles-here != nobody)[
' h# y4 ~! f1 F9 \% p1 ?7 A0 h- v

1 T9 \9 |+ E. r# ~0 s0 N# Dset customer one-of other turtles-here
+ b2 U, O& l; i6 O: Z; e9 }
% }9 s% Z" P* H8 L& D" O
;; set [customer] of customer myself

% @; K  s' @; r- R$ C5 V9 r9 ~. c0 P; V/ ~7 P8 p
set [trade-record-one] of self item (([who] of customer) - 1)$ G+ q# J' z1 Z' a/ T( }& A' x% r
[trade-record-all]of self
* u! l" n7 P1 Z! }  {" b;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ ]$ E* |2 P& O+ S+ @  O
4 m  _$ G1 N8 N9 Dset [trade-record-one] of customer item (([who] of self) - 1)2 h! f3 M( X+ e2 {
[trade-record-all]of customer
% k9 L5 y/ b, i& }- D

! I* w& e: \" q1 W2 [$ Pset [trade-record-one-len] of self length [trade-record-one] of self
6 }; B  P: |  V# ~# C" \* J; y( B! Y

  [2 h( r$ a6 v9 y- m" p& n% qset trade-record-current( list (timer) (random money-upper-limit))

% N$ F+ P5 E5 w1 e$ z5 ?* a: I8 ^8 T
% E; ?1 L0 H% ~9 Y* Pask self [do-trust]
$ d% ?# i* [+ ~, D+ m;;
先求ij的信任度
( u  U: C7 T& ~1 n# Z9 y9 j6 S7 K; {7 J
if ([trust-ok] of self)
5 K3 V6 ]$ J& S;;
根据ij的信任度来决定是否与j进行交易[3 \2 Y) G0 t( _
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# T5 q6 m7 |! b- W0 d/ d, d

" @: N2 y# w, d/ p& U- T$ c[
. X+ r3 r( }' S7 X3 V# m; A! g

7 V& ~9 E" X1 X8 [do-trade
% {( T' t7 V, Q& r
: o6 [7 @" E' j# r, g+ v
update-credibility-ijl

9 w6 n8 ^* [. I6 K) G+ }
  a% W5 \( M, h) _) Uupdate-credibility-list7 H7 \& U  M6 u. u# i/ K8 p
! ~- V; }9 n, ?7 b4 R
1 D: ]- g, D( N: ]% m
update-global-reputation-list
0 b: a" ^0 n7 x! R
9 r7 [0 k9 q+ [+ b9 w7 ^
poll-class

; V' u) K" O+ S. n
3 }0 J5 Z. O, W1 D) Y6 _& ~get-color

" r# w( M9 M5 |& Q2 d, q; {* W9 J- {# M8 W& G$ T+ R- P- z% q- v
]]
9 M! x& K4 l8 G# d' n% J0 L! M' ~7 d1 H, j! }, x
;;
如果所得的信任度满足条件,则进行交易
9 b- S2 e% _( t4 i/ R: A5 ~3 Z! Y# W0 H) k' a2 L+ q- o3 y
[

3 E0 r6 `/ R0 C3 a& n4 o  P( K* n- t# D' [/ M" q) b
rt random 360
+ h4 p" x% N1 d
- w2 B1 W* v" @
fd 1

% V' l8 |2 ~9 L, ~9 [* f! e# b) {9 E8 R3 A8 d( h& p6 }* W' S
]

5 @, T3 y: {9 O' T# n8 f  u- W; N. w  v( k/ _
end
3 v: W' a) F* D8 C
3 s# k7 T4 ?$ S; R' o8 }- s
to do-trust . z" [, V4 e7 _8 S1 v
set trust-ok False) g+ }$ T9 h9 t( a/ q2 x
" O2 _+ t; e$ u7 G! a4 D6 P

- E( R4 l  H- T$ _4 l* Hlet max-trade-times 0
* r0 r! v2 S2 ^9 A( _foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; q- G/ p6 f) T1 j
let max-trade-money 02 _7 \4 Y8 z2 ^' O  g7 s& O. E2 Q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ i2 `1 l* |* p
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* z# [$ f5 z+ a
; ?) o- y* I1 y
, J& I0 c4 Y! N" r3 I: R5 k+ @
get-global-proportion# q- h2 j0 l* j- F5 y# F
let trust-value, t1 g9 I7 ?/ z0 S$ z' q
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)

! U) K8 h- ~" r2 X6 W8 }7 t, m* aif(trust-value > trade-trust-value)7 _7 C/ Z3 y& S
[set trust-ok true]' H% Q) q  S! l( O% l; }
end5 L* ?) H1 B6 h" Q! \: @) d" m3 j* u

  T: t) D# |/ _8 Zto get-global-proportion
5 @" b) G3 n& E1 v: P2 nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! }9 b' F1 t3 w2 d8 |* O1 j7 A[set global-proportion 0]* k0 [) x+ [* i
[let i 07 m0 }+ c: }- F* t/ P
let sum-money 0+ }5 O, g  }& Z( j8 g# Z2 x9 x
while[ i < people]4 A3 H7 m& w) a( i5 u
[1 A9 _2 n! N* k' a: R4 A' {
if( length (item i
# y, @) D0 i# x. g) F+ v( }1 Y9 i[trade-record-all] of customer) > 3 )
/ M8 w5 J3 b$ k4 x- g" o
[, r! ?8 `+ f* F( M0 o* D* K
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ \% t: B2 C2 a# e( H
]
+ h, z3 m2 c+ n]3 W! X; o3 X; ~3 h
let j 0+ i# u1 s' f7 j9 ?1 ^+ |6 Y) O& Q
let note 00 N! W9 O6 k5 u. X8 ^& B6 c! _
while[ j < people]
2 s) c1 z- H& m& T8 q[" v2 ~! G4 _' k" h
if( length (item i$ e+ ~" R* r9 f/ e; J' }7 C; Q/ C
[trade-record-all] of customer) > 3 )

" ?* m+ s7 `3 O) ~  e[
' [1 s. Q, c1 J) U3 aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ `; \3 G* ~8 v6 k( O[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], @7 C0 U3 Q# N2 @
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  L. _$ E  O3 \5 ]2 B' e; s8 s
]+ i1 w, K5 }9 _
]$ S+ ~0 H' @; W. s4 k' d  |8 y  z
set global-proportion note+ i' ]9 K5 f3 g8 k  e6 A
]9 |. _) m, t/ N; K: o, \" e
end. S' Z+ c; c- P: g
" g  e1 h8 L# s5 z8 a5 R3 \
to do-trade
. Y, y! {0 q# @- e3 M9 b" a;;
这个过程实际上是给双方作出评价的过程8 q3 f. ~! v6 P( V4 X: u( F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. `. k- b4 @9 |" b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# h' D" W1 H8 `( x( P
set trade-record-current lput(timer) trade-record-current$ J1 t6 v2 B5 G
;;
评价时间
: A% P( J. `4 ~2 E7 ~ask myself [6 U5 f# x8 J% _9 s7 h. P( X3 @
update-local-reputation
, [+ ^- V( K: B# ?9 ?set trade-record-current lput([local-reputation] of myself) trade-record-current
' W# C. U1 z  k3 {$ d]! ^1 E! Q7 _0 P4 f% c* A
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! N* r- _: j4 o* [& {% T9 M* v) J;;
将此次交易的记录加入到trade-record-one
" F* r3 @% x& A% W; jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
, N" F* G, ^) g- O1 Llet note (item 2 trade-record-current )
+ @' i+ h; s8 E# m7 Y8 z  vset trade-record-current6 U9 t. E) B7 a: G( J0 R( E
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 q+ m- e# v4 }& l) M# Q/ }" kset trade-record-current
! S) t1 j: |. F7 }5 H  n(replace-item 3 trade-record-current note)
0 K1 F) K1 h6 j. G
' E0 f  u* ~4 F3 N
0 h% S. r$ r% b7 R
ask customer [& I4 Y$ J, D0 X6 o1 U
update-local-reputation: M: h3 u  S7 v9 V: h* F
set trade-record-current' A7 B: S- U: l6 ?) d4 L
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) v& J: ^9 l& O5 m2 N% w% m3 x
]
( ~- B  v* z0 J: ?
- _( W# x+ j! p5 @! l& u
+ G, N+ v# \+ f( Z) N  U4 J8 K
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- Y5 H. m; \& `& `# i, _. U2 u/ T

9 z' k( F2 P: I( F- bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 i! Y5 f0 ~5 S" E- |
;;
将此次交易的记录加入到customertrade-record-all
0 p) V1 x' h$ U! L: z9 }end# `6 Y: Z; y8 p  R% t2 J
8 C- V/ W3 |; f* F$ [
to update-local-reputation# O, _. [+ a# m. F1 p4 P" d
set [trade-record-one-len] of myself length [trade-record-one] of myself  l0 m! F8 u  f7 o9 i2 Z
! i9 }- R- M, _' h  t. e/ c

; }* N+ v! |. i7 f6 S# a: V2 y;;if [trade-record-one-len] of myself > 3
! G( D4 U, @, o  q% h: ]4 I
update-neighbor-total( ^$ Q' {9 Z( Q' m! d1 n% k
;;
更新邻居节点的数目,在此进行# K$ Q1 D0 o* l2 N
let i 3
7 z! J, g5 ^4 T: W7 glet sum-time 04 O5 u& i/ l) A# L
while[i < [trade-record-one-len] of myself]
1 p2 u9 m6 V  Q+ E. Y" R% B[# g  A  Q4 k' X* l# \8 K" g
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). N. U! q, Z4 z. h7 p
set i0 ]9 G) ~% A8 j- U
( i + 1)
: Q1 c) o) E: M$ W( D
]
) E0 x/ U* Q  S) [9 c! Dlet j 3- x1 p  S/ k" H9 ~+ f
let sum-money 0
: P) ^: ^$ A  |+ R( A; swhile[j < [trade-record-one-len] of myself]
- [5 z& j+ `' B" |# ?[( z; L" K1 o7 }/ d3 F
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)( c& O. ]; ^9 [
set j
0 K, \: i- I3 n" B/ j; G1 G( j + 1)

( I; g6 B: G8 w8 N# s]
+ d9 f& h5 |* u0 |: I6 U0 B8 F4 ?9 qlet k 3
1 j+ N+ O1 K1 c) D, Rlet power 0
, F8 a, j5 P# Blet local 06 h) k  W3 X$ a! n9 ?+ q
while [k <[trade-record-one-len] of myself]) j$ ^; X. d3 d% Q6 M. |& X5 f
[: s, i8 {0 c+ b4 n& z$ c( M% H
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)
; u& {* j* m! C% S- _1 }9 tset k (k + 1)
4 E9 e4 l: j9 G- ]( x]
9 Z# m) l2 Z# J( B, b8 x/ yset [local-reputation] of myself (local)
0 p: s( L2 W5 Rend% g' G& P# F% e( a0 E, [- @
+ ~0 s) [+ x9 m
to update-neighbor-total% c& _8 w6 H1 O

' n  x- ~# c2 [; O1 ~; H* dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# d6 v2 S9 n! p
9 `, d9 ^- {1 S3 ?7 E

8 W3 L+ d8 J7 k. T4 Dend
, A7 b6 x3 l1 m% H) _% V- W, U) e6 g( I$ Z8 k% P8 D9 H7 Q& e6 N
to update-credibility-ijl 8 s5 I- T, B$ `, K3 I, m7 x( O

! T* r- q3 X  k) I8 `: };;
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。4 A; d4 Q" ]1 y5 M! R! G8 m& A
let l 0; l1 p: f+ O: F$ |, t, u1 l7 M: |
while[ l < people ]
4 Z) p0 x8 \9 d;;
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% ?; ]0 H% u, R3 X0 Q% w
[7 X7 r: u. M& h9 ^& U- R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): @" W0 l( @9 [5 O/ M* X( o
if (trade-record-one-j-l-len > 3). c4 j. ]9 |% Z% K4 C- U2 J! }
[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
# i% ^* K* T" H# Clet i 3
% R/ \3 m- H: [" Glet sum-time 02 s) k, o* W; C# m# h( g% r" i. b
while[i < trade-record-one-len]9 e. M8 v0 a2 _2 T9 @7 I
[" B0 o- H/ @! n
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 E+ x% A! M0 A4 B3 h* |
set i
8 F5 z( W. A0 M5 O# o" f+ m( i + 1)
  B1 p( R  H, X' o, L8 ]) |
]7 o% \: y0 B% M7 V& w
let credibility-i-j-l 0) j0 m4 K- A( g" v0 r# c) ^5 _3 i0 `
;;i
评价(jjl的评价)" F3 _# K$ B* J
let j 3" m3 z6 e0 U. e# f- I" N# v. F
let k 41 c" J! e1 B( m" p+ j8 I
while[j < trade-record-one-len]) d/ k+ ~8 G4 @$ C
[
; E. p$ {# U) D& X$ E3 ~- gwhile [((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. m- {; M( H8 D' \: u2 `
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)
1 ?! u' K9 {( A) H# g7 v! [set j
8 Q$ D0 |+ _" x  N9 ~( K( j + 1)

8 K- _' k& f) o4 ]3 @]
( Q% k; p/ D. Y8 W5 b. ?3 s( \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 ))
4 \/ I, \, ?/ C0 a0 E" C, M" L3 Z8 F0 ?1 S" D% W

7 N* {) u3 ^. ]1 Jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& x( Q) v3 h" [* e- ?& J;;
及时更新il的评价质量的评价5 C+ q" R2 o1 z
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" Q; Q% \2 i' Zset l (l + 1); p2 w3 X5 E2 f$ n  {
]
% C( f* _5 s" uend% q; B' J+ V; ~, a
) V+ u4 ~. w4 K8 @
to update-credibility-list
3 C1 z5 ~( X2 s3 Rlet i 03 o0 E# E  M% T* l
while[i < people]
3 B; P7 g5 T* x[
0 p- `% t/ _- _1 w, \let j 0% C. d7 g+ h6 i' }
let note 0
1 v$ }" G. ?& p' R1 t% Dlet k 0% ^# `- n) Z! f9 V) e- ?5 O
;;
计作出过评价的邻居节点的数目
! {9 [- F3 W, x% e8 Awhile[j < people]
( a0 r5 f7 Z9 I  W. B[
; R& x: C$ G9 H, @8 {. T; ]) zif (item j( [credibility] of turtle (i + 1)) != -1)  B. H4 J9 x( R5 r
;;
判断是否给本turtle的评价质量做出过评价的节点% \% C: o* W% F& ~2 W3 _- H
[set note (note + item j ([credibility]of turtle (i + 1)))/ G  f  q7 X0 [. W& U
;;*(exp (-(people - 2)))/(people - 2))]
* r! l6 q0 c$ g* r
set k (k + 1)3 P& ?! u- W2 ~
]
8 U- @! J. A( W* X, ?  H1 S; @set j (j + 1)
6 `, a& d3 t( N' M]% }& u% s, l' {1 o; A% ~% ^. F% O
set note (note *(exp (- (1 / k)))/ k)
- V/ t- Z2 L8 }, T4 g5 Qset credibility-list (replace-item i credibility-list note): t9 }+ k+ n! j& Z- l: n
set i (i + 1)5 a+ G/ U$ j, \, C: _8 c/ s! ~+ K
]6 w  d$ r3 }& C9 [1 K% A  c
end' z. t8 |0 z  p# g/ d7 l

6 ~# _1 J* t. o) h6 _$ tto update-global-reputation-list7 f1 V- @+ [4 {- j, ]. r
let j 0
6 p- r9 d% w8 `" |while[j < people]
  T; i) ]# H* y1 Q4 a[
2 ~  Z( \1 C1 `0 Glet new 0
4 e% w$ {' k1 V6 U1 N. t;;
暂存新的一个全局声誉& ^- U6 l+ n+ f+ a/ D; ?
let i 0
: ]5 R& ?1 S* S1 }) ^, blet sum-money 0
  p' |0 E. L  H& Glet credibility-money 0$ t) g- s6 B3 B$ X
while [i < people]
$ d5 T, i& s4 L& A2 l0 Q* Q[
; N6 ?8 U# c) [9 ~set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 p3 J0 u' u- W
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 Y4 x7 }2 q- G+ |' u7 d; U+ x
set i (i + 1)
. m; @6 N7 }" W$ |( o" Z]
9 W7 l  I( Q  i! `9 ]9 ]. }$ P$ Glet k 0" O! p  P1 k( G. H; v2 a
let new1 0( y  H5 w; m: [3 s" H9 I, q! Q% q4 L/ N
while [k < people]. s- @) \7 ]7 `$ r5 I$ K2 V+ {
[
. ?, b3 u- o8 H1 B$ j! C, H0 Y: X. V. C, lset 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)+ ?: U' _" K" m" e' R. S0 R& i2 z
set k (k + 1)
& Q0 T) `( x3 L* Y$ h% p]
; ~0 C; C5 N7 x- D2 o- Aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . y4 K0 `. U# a0 ~: e( ]- K
set global-reputation-list (replace-item j global-reputation-list new). ^/ S% w7 q5 Y: a, y# {9 I
set j (j + 1)
5 D$ W+ W3 Z$ o3 p]
) ]* Q: U' d7 R) a$ Fend2 w. f+ ?! F8 g

( g! h" L! h: J. c! q3 J4 ?; w, Q9 T9 M) H$ z7 E. K
& T- H  p$ ?3 p7 m
to get-color. R  i: e% v& |% r1 z4 {9 N
- F; M9 x8 ^1 s8 p
set color blue

* [  z9 D) \* a. s& V/ uend- R+ B$ A0 {7 S, w

' Y% |' r* O3 w4 \) wto poll-class
4 Q; H# B' D+ D- l, send3 O  p! u6 {+ A: F/ _

6 D1 E. d5 t3 j0 Z7 Bto setup-plot1) x6 m" I( q) C, X6 K9 I5 }5 t

# U1 w5 }5 z8 M3 W8 bset-current-plot "Trends-of-Local-reputation"
  }; X, T* I% Z) U7 [( s
! S7 H6 A3 a  K, M( E3 K
set-plot-x-range 0 xmax

, f. [" u' @7 w! j- ?4 \6 k( X
+ J1 n1 D7 P7 X1 D  |set-plot-y-range 0.0 ymax
. F$ V7 ~( p- t4 P. _
end
, L- A. ?7 a! }" w& U1 \  q# e" \
2 }, b5 R2 A" r: Jto setup-plot2/ l! r; y5 K" K6 K* _
, V; v2 Q& _. E. n+ o% m, m4 A$ g
set-current-plot "Trends-of-global-reputation"
, `8 E) I! u& Y. `1 C  i: \
2 J1 F2 |# K4 ~9 e
set-plot-x-range 0 xmax

0 e/ C5 D' L9 c2 u  C7 U5 p, \; ], \
set-plot-y-range 0.0 ymax

- w, L4 V! s5 g' K& x9 @6 a3 Zend+ D$ F1 _& l; q6 ~
, _$ X9 Q  C2 H2 S
to setup-plot39 \; h) r  X& ~( A

# x/ R  R+ K8 c1 Q2 Z. t6 z. Jset-current-plot "Trends-of-credibility"

9 X; f* d, Z+ I8 N% ?8 @6 q5 ?# r
$ F8 J$ Y7 L6 N% [set-plot-x-range 0 xmax
; G  M! V3 u- v

8 B5 t% n0 M* s* F: Bset-plot-y-range 0.0 ymax

: Q% f7 j4 y# C) aend
, m8 o% R* s% H: T4 w0 ^1 T+ {9 A1 i/ t$ g3 c1 ]( |
to do-plots9 C" b- o( B; I2 h( j) U% O
set-current-plot "Trends-of-Local-reputation"
9 s/ p) E9 U+ ~9 p0 Xset-current-plot-pen "Honest service"
) {4 |9 g# M" F* s6 |7 @$ W# \$ rend
& ]0 [- k- E5 X' T/ I! n6 B8 z& h1 c. H. d8 q8 c+ N% a& M5 \
[ 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.9 d+ U/ x5 W& ]) G1 V! ^

0 k  S' t4 ~4 B' @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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