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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:' R8 ]# C- _, y4 S; z' P+ v; B
to do-business 7 J( W4 g! X( O' N  x+ C' }
rt random 3603 ~: A8 t" S) T( C! e
fd 1. V. C  D1 f8 S# A2 ?$ ?
ifelse(other turtles-here != nobody)[' k- [5 {7 @* i
   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.
) T: i9 S$ @1 f   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 I% }; p$ H1 F3 G/ H# g4 D4 \# @* q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: {+ U- e% `. G3 I+ Q
   set [trade-record-one-len] of self length [trade-record-one] of self2 d8 s4 i2 B8 E5 U3 P' i! b
   set trade-record-current( list (timer) (random money-upper-limit))
- \( v; i% y& \# |/ @$ x, r
( k1 R, r# ]( `5 w4 B& E6 ?问题的提示如下:6 r+ R# i; m( V& l6 \7 Q
" o1 i. {* L% F" H, Y$ Q4 L
error while turtle 50 running OF in procedure DO-BUSINESS5 E2 G- Z+ ]. V4 l. |0 o3 Z  k$ {+ z
  called by procedure GO
) Z% a9 R( w3 p# b/ p( ZOF expected input to be a turtle agentset or turtle but got NOBODY instead.* B& n- l+ B7 a  ~% a6 t9 s5 x* A
(halted running of go)
& O2 V' p4 o& J; W$ k$ Q1 M/ c& \  ~8 @0 q" w+ W
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~~
2 s1 @! B' t# f" o+ K& `% d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. J+ ^3 Q6 ^9 i2 G& u( Y
globals[4 [' r7 R5 Z$ K  E: `  o( {9 F4 O
xmax8 A; R  n. i: y  V0 T- ~
ymax3 Q6 E4 Y& Z1 O( m2 p
global-reputation-list
3 g  }8 ~" z' R9 D! j
+ w( a4 B/ B, y( I  B1 v;;
每一个turtle的全局声誉都存在此LIST
6 J2 w7 o" Z& Z. z5 v( Ycredibility-list
( Q9 k! S- k! B) V9 U/ t;;
每一个turtle的评价可信度" L( G+ m, `" j8 u* N+ ~  B4 |8 z
honest-service
- U" o% b# r) b1 S2 n- [/ X: _unhonest-service
4 f+ Z' M  A$ E1 ioscillation
+ |- H) P" ~, n4 O4 s) Lrand-dynamic
' t( ^8 u6 D, A8 \]1 y  I- R- l; w' `, K  M

* P+ E: X9 H( }8 e& ?  K- Zturtles-own[/ J' Y2 P- [! D/ W5 }
trade-record-all
/ O; y) Y& Y) V;;a list of lists,
trade-record-one组成. S) C/ Q1 z/ J* k* M8 R' G5 G
trade-record-one
: R! ~# M$ h5 Z* {$ ~, [;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. t2 X3 N+ K+ o- y. r3 A+ ~# A

/ C; ~$ I5 H( S- a' 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]]" S+ j5 ]9 ^9 |- W$ B
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], h7 r+ Y7 }* P/ Q& K9 q
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list9 T: s5 g7 S/ u( d5 Q
neighbor-total. z1 r* P/ G7 p2 m+ q- w0 B2 c8 J
;;
记录该turtle的邻居节点的数目
3 T; F: I/ I; W, J8 O# Htrade-time
2 [6 D8 g2 F/ {- N/ y0 _;;
当前发生交易的turtle的交易时间
& N: u' u  w) m2 w! Cappraise-give
2 \" J* ^5 o! y$ r1 v6 ]" x;;
当前发生交易时给出的评价
$ h) c' k$ h* Z3 I( H: jappraise-receive
7 I7 J# R$ _* j" a1 C8 u. ^;;
当前发生交易时收到的评价( U/ k5 z, T  S
appraise-time. o7 k  {2 e9 l! k/ ^
;;
当前发生交易时的评价时间
! b$ B/ \! @5 V+ J) e  }  D# ?local-reputation-now;;此次交易后相对于对方turtle的局部声誉* v3 |* g& ^) p5 ^& M$ }7 \
trade-times-total
& q) j$ m) B; T4 f" C; b2 A1 j;;
与当前turtle的交易总次数3 A1 a4 J/ o" W" V; _% i# V
trade-money-total  ^! Z4 Y9 D/ @4 j
;;
与当前turtle的交易总金额. q- E& }8 \9 f
local-reputation& p% t! B& o9 `+ p2 J% ]  F
global-reputation' I8 V8 r9 q2 P/ q1 ]- J
credibility
0 x( R6 H- w0 B$ _: j9 r- S;;
评价可信度,每次交易后都需要更新9 }$ Z' g5 B& m6 I3 k
credibility-all& L7 s, T: u2 V- C- S: 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
/ l; z3 h) H/ v" u$ s% q2 \
& C: P0 Y1 j- I$ y( I;;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
+ Y3 K# N+ ]# n% Xcredibility-one. ^$ v* q" ^3 {' U2 @
;;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
6 t1 D) M6 p; x0 qglobal-proportion
0 A6 p, s+ t% s: z% O7 l: H3 pcustomer& j, _6 U7 T: o6 s1 [, o- |4 i
customer-no
' A& O1 Z4 a1 c1 N  G# Qtrust-ok
% y' H) C8 g+ Gtrade-record-one-len;;trade-record-one的长度( U4 X1 v6 a, H9 L/ B  B5 n5 n; P
]6 x0 r. ]4 _/ N: A' V
0 V( n& F4 M; W* D
;;setup procedure; E/ x6 Y2 ]7 \& P: I+ b5 n! B4 s
- [0 E8 ^3 `- }' U# n% B
to setup. }3 q0 o; v' Z
/ f1 v5 w: p8 j- V# n8 i
ca

. f8 _: e6 s1 T; `( S; x
4 C* r& ?* N, ~6 F4 g+ p5 yinitialize-settings
) m: W, F5 S9 ~: K
' T2 g9 F! F, }$ j) z5 U# x) E
crt people [setup-turtles]

* a& l& I' Z9 C) T+ y  L' I. C( S6 h$ O
reset-timer
0 A& l  V  _2 b. F& v) K3 x

- e% H" j: U  N& L  s7 a& o, jpoll-class

5 M: p6 g0 {* c0 l, d) T8 j' M
$ M$ U) a3 I# [6 M' Q% C# ysetup-plots

  {3 {6 j1 M: Q' V/ d) b) h& h: ~( g9 g
do-plots

, s! S. B$ p0 a  dend: Z- f$ \3 M7 A0 u% @- n

9 G5 L# Q! }+ o+ f; n( r9 Jto initialize-settings
# n# J. F' F7 o6 \$ \& ?
% M, E1 b6 }5 l0 pset global-reputation-list []
" L0 B9 d- N5 K: E# E
$ h& `. r, C) n8 @1 n9 g( H
set credibility-list n-values people [0.5]

' n3 M: Y' {1 l9 ]0 e  b4 e" a- q, ^' n8 j9 f, ?* W
set honest-service 0

8 t8 Q9 Y6 f+ W. A! ]- z0 l" O
' C3 R: D, r! {' v/ }: X8 ^) D! Eset unhonest-service 0

5 d, b2 C( i7 Q: b2 |
4 j) Z3 D( Q& [* F! L  rset oscillation 0

; G. d# N" }9 n4 ^" |+ Q& @1 }" ?2 r& P
set rand-dynamic 0
4 V, y" D+ r; X9 b+ D; S. s) I
end' `  ]+ N3 c1 }2 w
. k- J# z. G" _. Q" p; Z1 ]& X
to setup-turtles
+ w0 v$ R& [6 uset shape "person"( m1 q* j$ F. Y
setxy random-xcor random-ycor1 _) A8 Z! O5 c# t  V4 i; q
set trade-record-one []1 e. q% S6 N/ H! R' _" ^- t4 B
- E) R* n% F. L9 X7 s+ v
set trade-record-all n-values people [(list (? + 1) 0 0)]
5 P+ n3 P) w( l- A6 Z

/ e# B, Q& d3 g  U- M: y& Xset trade-record-current []. y  J+ _; \% b% @; D) v, W, w* u8 ^
set credibility-receive []6 N- U) W; q( g# f
set local-reputation 0.5
; Y% }3 \* y0 b' U: q% ~. ~set neighbor-total 0
( O9 k$ f. o: D0 W# iset trade-times-total 0
8 Y) A: |; c# y$ ]2 mset trade-money-total 0+ ?8 V5 h5 t( c  w
set customer nobody0 l0 W% }7 e* r
set credibility-all n-values people [creat-credibility]
: S3 @0 ~7 b. nset credibility n-values people [-1]8 U( c5 N- M" B
get-color
2 y" {( g0 O* ]9 ^$ t0 M

( X, I4 v1 W6 m' x8 b  c" \end
+ |& k' K7 s+ q+ p
( v4 ]1 t) L) K- Q) Z( Bto-report creat-credibility
+ P, K1 w+ a  p: Ireport n-values people [0.5]1 x& Q: c5 \' `9 h  b( T7 L% B
end
4 q- e& M7 e4 I$ W- B7 I
$ ?  R) F; ]4 I( o9 U3 v" Wto setup-plots- F6 l# i$ `: Y7 K* M/ [
3 ~4 ]4 D6 U, \
set xmax 30
2 W3 Y' ~/ g3 D, I" f

. [  C, ]8 Z( f9 _! Y9 sset ymax 1.0
# c* X. O8 G  V$ q# L6 \

4 W/ u& r5 H& {; jclear-all-plots

: ?' [; z( J. Y/ F4 G- ~  h! m  X3 M
setup-plot1
# k" z& U7 J0 k( A$ L
/ g  G! n( c, o8 [0 J8 u. _& Y
setup-plot2
& n5 u1 h: {/ L- M
( {  L8 O* E# K/ j! ~$ ?
setup-plot3

0 W' z' s& F0 ^3 kend
5 A! z9 B' @9 I5 V. v5 S% M
9 W. ~- Z. X, k;;run time procedures9 q/ O( U9 G. W2 O- h

# j  M/ j: ?4 x3 x" }+ }4 b" @to go
, E/ w. \1 |  y& `6 X- U2 I" n: [1 ~$ c- e0 Z
ask turtles [do-business]

* ]% y( N6 B& Z0 W* [/ X, u0 eend; @. C( `* i) ~. T9 W
$ D9 {- o; E6 r6 m  P
to do-business
/ z/ O1 {1 {/ x. D6 p. m

; {& S7 \, ]4 a& H: s3 o: }  E: I' R/ m& k4 I5 D& q9 H$ q- c, @
rt random 360

& `4 q4 [5 S' h1 O* w' r6 t. f& w
  \8 _1 f" f, f" E: Vfd 1

% U: K" o- S5 S0 j
: c. n7 c: B% U1 \& K, F7 a! Difelse(other turtles-here != nobody)[

) C* L  e1 e* _  [3 D# J$ A' U' a0 ~, O9 Z0 L7 ?5 }8 @! Z& _
set customer one-of other turtles-here

& r! F& ^' E* d3 b* f$ r, @/ ~! J/ y
;; set [customer] of customer myself
) \. Z, F8 n% l" }/ D) ~0 H  E
  X# k+ `8 n5 T% Q7 b
set [trade-record-one] of self item (([who] of customer) - 1)% G+ `/ T$ s$ X* M1 w& S; T
[trade-record-all]of self
: L1 u4 p, C- Y( |% B;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 u" Z; F5 a. L0 e% l% V) k. B0 f# U* C6 s8 }- p8 S
set [trade-record-one] of customer item (([who] of self) - 1); u4 _& p" u; m2 R- D
[trade-record-all]of customer

8 c9 V2 \5 I; d8 Q  L: p0 `% I) y( G/ `0 I
set [trade-record-one-len] of self length [trade-record-one] of self

1 U% |2 {9 a; u; h5 S$ h- k
$ t9 m7 ]! |+ x8 }5 x9 V4 ?set trade-record-current( list (timer) (random money-upper-limit))
% x' G3 X/ S/ ~0 d; n* O# C

, d2 |- n) A2 ]5 |3 t# sask self [do-trust]! M" Q# T" C2 E. c6 J8 L# o$ K
;;
先求ij的信任度2 u" E' }* X7 Q1 r) C9 o
: f* n0 A2 H9 D5 s4 c  z
if ([trust-ok] of self)" v1 H" u2 j" `
;;
根据ij的信任度来决定是否与j进行交易[( g. E* e. g/ c2 d) ^
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# U2 S* J- B- {2 P8 {$ s0 ^
6 w& E* h6 @4 j& I- H% K- p8 i+ B) e[

8 h& E- f" T; a/ v4 ^8 W% F) V; ?! \( v/ W6 ~' S1 a
do-trade

4 R8 i  K8 i0 G& G
& {7 w/ R8 p8 U& ~update-credibility-ijl
7 e# }7 I% p( C! x* D7 D6 S
( R4 N2 O6 s) u
update-credibility-list
; P& N% D9 F) N1 V
- ~# [& C( V& {( h

, p- u, n4 y: r3 s0 a5 }update-global-reputation-list
$ n2 g* f. ~5 ]7 @9 ^3 x4 P5 C
1 L5 U) |  }1 W1 g- Y, r3 x( b
poll-class
" f5 Q& f2 u7 I; p" |
/ `; t+ [/ S* \4 Q9 [
get-color
: D- i1 D3 R) @

4 v+ S! h" I3 K1 i9 H$ n]]' \4 f  `/ A! d9 _
1 `" p2 J' _2 S+ l  y  v; C
;;
如果所得的信任度满足条件,则进行交易# V  t* H6 `6 |% p
: Q. k5 E+ n5 B1 I: S+ W! Y
[

0 h# F& s& C" f4 n$ J5 q8 p, E1 d) l5 O
rt random 360
9 N) j1 {3 N. J- R7 L: d; r5 ]: I

- i/ z5 ^& [) Y8 k9 Sfd 1

7 i- E* _/ u" _2 s  R+ V
! C3 _# \2 P1 n]

" c' H# A4 e9 `, D$ {, {  O1 p1 T- W9 C1 n7 v, w/ T
end

. f. |# O/ R. V3 R& f# _$ Q1 d, D2 i( \$ S4 \0 v
to do-trust
1 y1 c! {0 q9 |. o6 L( h. Tset trust-ok False
/ H9 O1 X% @; d; t* e) L+ {3 n7 z' _  x  P
0 i. I" E6 I0 E0 p
let max-trade-times 0( O) x' x0 }  |& y7 X
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: b, p+ P& L6 x5 i3 _let max-trade-money 0
5 }2 b3 E" b2 e( iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: {- k9 H$ i( U" M. E) [1 `let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ H, d; `4 R9 l! f8 W
: x5 M  _1 q. Q4 [* t/ a- @
8 {! A" L# H2 X: g3 G! m( j  X
get-global-proportion; _: I& d; |3 ]3 H. Z" ~
let trust-value
8 y2 s' F; K  g3 Clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

% v/ y' r/ ~( T4 L% v7 \if(trust-value > trade-trust-value)
2 @, }2 s% j) y+ f1 O% E[set trust-ok true]3 M  P: [8 V9 @- L5 I2 l
end/ k' g& e! y- R+ r; [; p; ]
2 T! }8 o, c1 n% B8 Z( n
to get-global-proportion9 W- S& N% _$ p' M8 I
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! @* ^! H( M- r[set global-proportion 0]5 ~4 f6 d7 b! f' \
[let i 0
- p. n* ^3 a1 ~* ]$ ?: b) Y. Olet sum-money 0$ A8 ^* x: ~  y9 U
while[ i < people]
5 Q+ d3 p0 m* P. W[
( v! r2 m6 j: Q& |/ X; b3 Z; K- p1 lif( length (item i
: U! V; j" ~7 n/ b+ R$ F[trade-record-all] of customer) > 3 )

1 X# q1 V6 |+ J. p0 b[) Q2 o+ @8 t4 E2 L
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& Q* t9 x& c9 I* \$ G9 ~0 e- E]5 B$ Y) f- l  [4 I7 C
]1 N3 k- h5 v6 E6 i- _5 i6 a
let j 06 B& B& Z4 A# e: D) {. @) l
let note 0
5 i5 U- ~8 ]) m! d: Ewhile[ j < people]
5 g# Q% a" p! x. F% t& {[) _, R* U5 h6 d7 E
if( length (item i) `1 A: C4 p3 E) o# s
[trade-record-all] of customer) > 3 )
2 P5 {6 ?4 h' c; T8 \
[: f5 i% K; g  ?2 l, ^* f" {
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) S5 e& n/ m/ K* _[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 T  T/ _, ]4 }# i% E/ d
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& D# M9 t4 ^: d$ {# P4 l]
, n2 w8 [6 T0 F3 O]8 A" ~5 }& v" h# b
set global-proportion note$ D6 I7 d% X! v) i
]
+ ~  i4 {% L9 ^, Q6 i2 T1 tend9 B6 s+ m% B6 Z7 J2 P% I
* w  |- J8 @0 Q1 m* X' a1 F7 q: E5 P
to do-trade+ d" i/ J% w+ i8 C1 O# C
;;
这个过程实际上是给双方作出评价的过程
* P" b  T2 Q% G/ a  e7 A" Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 E: A5 m$ H0 l& y: G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 ?' p# @  F1 |2 _0 {+ \6 Bset trade-record-current lput(timer) trade-record-current
) u- f; o5 H* X2 `1 g;;
评价时间% r! |4 c4 w% e0 x) I  I7 f4 _7 M
ask myself [  Y8 m+ ~% q* Z5 ~
update-local-reputation
7 R! z" w3 T! {set trade-record-current lput([local-reputation] of myself) trade-record-current. G3 t& o; a7 h- D; V: t- Z
]
! }# Y; C; _0 N  y. Cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% M. k( I( j' z$ N! C% K" r1 ~;;
将此次交易的记录加入到trade-record-one
* F' d6 a5 C4 |: n6 H! tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 g% d4 ~+ z" k
let note (item 2 trade-record-current )% U" m: T$ u9 h3 D& G$ x6 @" v$ Q
set trade-record-current) l2 q0 L6 l+ c' n0 T- M$ p
(replace-item 2 trade-record-current (item 3 trade-record-current))
1 Y2 N" K3 M* m* w5 l' z
set trade-record-current+ N( T" N& r/ t: _/ b3 P. |
(replace-item 3 trade-record-current note)4 {8 i' }! B3 w4 p+ N8 E

" j' i& i% j$ G8 ~+ ~) q
$ n9 y3 C% w- M7 k( x
ask customer [6 v$ e' d' ?+ x
update-local-reputation% |7 T2 u4 r4 Z( P* [
set trade-record-current
; Q. v, Y& |* Q9 D(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) T) e# O5 P2 }# @8 P4 j8 s]. n6 l. t9 Q' V
2 J# T+ }& {, b; {) U" M4 T

# [0 d1 I  _/ k  L' T; ~set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& h+ j, x- J+ }4 p% t
- i& e( A( s* j
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. J* S. i1 Z6 Y  K3 V;;
将此次交易的记录加入到customertrade-record-all
6 I, v; I+ W7 s8 s2 G! Nend
( I7 J; b4 ^" x- O# v9 X& H8 k
! f( ^+ q4 b5 C9 Z2 A# B" fto update-local-reputation
: S' R5 K; {: l- V* y! s: wset [trade-record-one-len] of myself length [trade-record-one] of myself8 c& J6 ]& |/ h, h8 ?1 C7 b
+ d$ ^" K  a8 v" h

! H/ o% Q4 E( s7 ^: z, S8 x;;if [trade-record-one-len] of myself > 3
" c6 ^2 y" c. l
update-neighbor-total
2 N$ q' J8 ~% I$ o! ], n;;
更新邻居节点的数目,在此进行4 U) [" l6 J: a
let i 3
. i5 p) E" [) wlet sum-time 0
' \& w+ M" P7 S: ~while[i < [trade-record-one-len] of myself]
; d* o( e8 ?5 h9 q! `8 ^[
9 Z3 R, @2 q0 A% gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. g4 [2 i9 x. |/ r) O# d- L8 D. Dset i
6 @% i8 [6 m8 S/ U( i + 1)

( D6 t& O. j4 W4 T7 y]) W( [# ^% L+ A, ?! k  K& T  ]
let j 3
5 R" Q/ A* R% v: mlet sum-money 0% ?8 {& C: l) p5 y) i$ u
while[j < [trade-record-one-len] of myself]
9 _2 t" g  ?+ C% N; }( p4 W[
9 a4 S$ _& R0 S# D# zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time), K- c0 x: n4 c: @) F! V. g$ d; F
set j# ^3 |% j' R1 P& c: `
( j + 1)
. P1 t+ o- \. q" j7 h& _
]: a9 C( Q% G1 \( w! y" F: c
let k 3# C) o# r2 }, _% c8 n3 |5 ?! W
let power 0
( e+ j$ O& x3 G# {" Olet local 0
" l( y, Q$ ~( h8 h  iwhile [k <[trade-record-one-len] of myself]$ B8 a4 E* \# {, K6 K  J* M$ t( I
[
9 [' g2 t; N8 k, D1 g% R2 rset 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) $ q) L6 v0 y5 [; M' d
set k (k + 1)
. z' ]7 i3 w/ e5 U]
9 O, {% @5 X* k% s( d' tset [local-reputation] of myself (local)9 [9 c% f/ m3 Q/ v0 E" y
end
, l' Y0 r" j9 }4 T
( R9 J- D: [: E* x1 s; [$ Pto update-neighbor-total6 }/ a$ ^& s: ~( z5 A0 e+ ~/ K

+ N( J1 k6 k2 u1 X9 aif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  U0 w5 V/ B# r2 ?# N$ e
. o+ q5 Z2 U% I5 H6 Q& C/ H
8 b( t; ]- {) U; A- G; I4 P
end& b  c7 w" ]1 d1 {" s) n! y
' f; x$ N2 E1 M4 R+ T
to update-credibility-ijl
* y! T0 z6 |' r+ h8 X. W6 @/ k& i( C6 e* p
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。1 X' Q2 c  }/ s( `1 t3 R
let l 0
2 C& c8 H! U# i4 twhile[ l < people ]
5 X  i3 J# G) o, j* G7 m" ];;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价$ g# K. t& J4 F4 V; s5 z
[
6 D( m0 {) l+ Llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, [2 J( P. X7 `  ^. ~if (trade-record-one-j-l-len > 3); O3 h: ?8 s6 S6 _# h0 K6 M
[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-one4 G6 a: A6 K% g
let i 3
% E) r7 u4 Q6 ulet sum-time 0
8 f1 K& g  V3 R. ^while[i < trade-record-one-len]
" W: ?( m$ x, y+ z3 J" o- B[
3 D& S9 C) a3 J1 Kset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 z& Y% ]0 Z  G6 bset i& {5 h7 o4 k, ^; [. K2 j# e0 E
( i + 1)

- M' W4 v1 D9 u8 Y2 W$ D' z% C, X]
3 m* t. M: ]6 y+ N  g9 s- mlet credibility-i-j-l 0: H- W& l& H. u, b4 o# \* O2 v
;;i
评价(jjl的评价)/ s2 s# r* ?1 s( t; o9 S
let j 3/ V4 l/ j4 w  h) `
let k 45 l# [$ M& X; j( a- O; {6 w
while[j < trade-record-one-len]9 \* |0 G8 x2 k7 [
[
( P/ ]9 y, O" c/ o- Xwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉% P7 H0 E0 v; c, W/ k0 Y
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)
5 K6 ~, ^% |/ ~' U3 `9 cset j1 j7 u& J' J( M+ b! s' m* d
( j + 1)
% F) p7 [4 f8 ~# @' s. w
]: [" c5 V5 E: Y" f* y& `% B
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 ))
+ m! U- S8 ?# F- }& B4 T) z) p7 F0 J5 n1 g0 l
+ ?# d( q6 H0 p# q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 H, h& R+ C4 p5 U;;
及时更新il的评价质量的评价3 u4 z; q* @( E
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) j) M, G7 B4 d2 `
set l (l + 1)# Z* b: S& w: H( t8 \
]0 ^( N( b0 J' m5 y$ r
end
, M& r# o7 v* x
' k( e( p+ y5 _: ^to update-credibility-list* {: U. g0 t# \; r" u( t3 [3 q
let i 0
1 U/ d, V' y5 Q, W8 O" @+ R+ ]1 Pwhile[i < people]; w6 Q9 {) \  k
[' e& W' J- ?: o, r, q" p  D
let j 0$ X) Y  U. n. P& k0 h0 G- c6 N) J
let note 0
; G- O+ d: v  O/ ]- F: Z( ylet k 0
1 J# Z& a  P, N  W# S;;
计作出过评价的邻居节点的数目- {2 l. W! I' h
while[j < people]& P& N6 J' O- P# \; U# }
[
& g/ C7 W) @2 d/ tif (item j( [credibility] of turtle (i + 1)) != -1)' P9 A1 L/ t! n  |7 n* E* @( K
;;
判断是否给本turtle的评价质量做出过评价的节点
  r: _/ r: z6 v% y! X- x  C- x' K[set note (note + item j ([credibility]of turtle (i + 1)))
6 j1 g; J" Q4 s; {7 _; Z8 P! U3 A;;*(exp (-(people - 2)))/(people - 2))]
  D8 w; `5 `* O4 P
set k (k + 1)
# s& p) H+ F/ i4 V* @], l! I2 l$ ]* Z8 ~! J+ _" g2 y
set j (j + 1)
2 D# `- T( H& `; D0 D' K. {4 S0 c]* ]# c* g" u, ^2 q. s/ _
set note (note *(exp (- (1 / k)))/ k)6 f7 [) x) H$ p
set credibility-list (replace-item i credibility-list note)
' ^" ^) V' Z1 u+ f5 q3 m; wset i (i + 1): [( x& Y" d2 }& Z$ N6 w; P
]' X" N% O, E, s- I- H! e! \; k. C$ z
end
( V  A& k* o- p  H& o/ F% u7 ^
8 \( S' l8 O. c7 z/ }to update-global-reputation-list+ r8 W) }( q; ^9 v& ~& l" t4 s
let j 06 L1 N4 r5 c# E& i6 x
while[j < people]
$ m: `: e9 z; r7 u; B. V[! M- x. f0 p- u. i. M# o
let new 0
: g# E( _% O' W" b$ p5 A# r, [;;
暂存新的一个全局声誉9 p$ |9 `) `* w1 s6 H
let i 0( P8 }; O  _& e$ }( }! U
let sum-money 0
5 s1 o( \% |: C3 j' Q! [let credibility-money 0
% @+ C, u6 F2 r& ~2 \( C8 L; Wwhile [i < people]
8 P* e4 t1 Q! l/ ][& E6 s* G, a. N" x1 c% P
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 Y$ `( |& G& g6 V7 I
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& A6 |3 w& @# W: u7 S5 Uset i (i + 1)
! z5 p; P% G0 \]
! h- |/ V* p( i  w1 H9 \% Ilet k 0
6 j) l7 z' e, C. ?let new1 0
% I1 h. n5 I" @! V: _while [k < people]) i8 e+ [0 I* b3 X9 M
[; z. a, O7 e# d: m
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)
* Y, O3 h0 Y2 [; W( H0 Iset k (k + 1)( @, D: ^- s1 o; V
]: w% R9 e- v/ b  X" K) \- D
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , J% b. D& r- I2 _1 m2 L
set global-reputation-list (replace-item j global-reputation-list new)
( X4 M9 k. _; X8 _) {set j (j + 1)
) g) X; r% C. t]9 k& T* W4 t% N! l- Y# j
end
$ R% C* W5 P  ~- q% O* Z
0 r  G# \% W  c: E" E) l
& h8 a# x: j5 V, U% `- Z5 l# g9 {6 ^
to get-color6 I) h" t! s% _4 d& ]
) ~  n0 ]1 [5 K7 o! M2 j& P7 f
set color blue

5 l# ]0 }  r% [6 y! jend  @* H) R& W, s! S0 z& O

! Y# _; M; q4 O. Xto poll-class5 G/ G) V* D- \, Y$ q6 ~
end" ]6 n4 }. N' C' H
4 v5 f, j. o- A* u- S$ B- A0 |
to setup-plot1& }" p( V! M$ l. P. @  e9 N
5 x& R6 `3 U% a' r
set-current-plot "Trends-of-Local-reputation"

$ }' K  b; m( t4 R+ Q$ j
, t3 f/ I9 E, \, y9 C+ s' ?set-plot-x-range 0 xmax

+ H3 j+ }$ R* O3 L& e( o& I, B0 P* Z0 ]' P9 q6 T, @
set-plot-y-range 0.0 ymax
. P! {( @) W; H% D% |2 f
end
; z, ~2 N' z: h; n9 X  j  g- ?6 R0 K2 l/ ?1 |7 ~) }
to setup-plot2  a! z+ Q$ H: B2 U. w, c' g: j

" ^5 `1 e# @0 l# Zset-current-plot "Trends-of-global-reputation"

- ?1 a8 R' t6 W/ s8 Z' |9 b, h6 [* A. i7 j% H
set-plot-x-range 0 xmax

5 T7 j) U8 V3 I
' Y+ ]0 d) }7 D5 L* oset-plot-y-range 0.0 ymax
/ j2 X9 P7 z( U4 V+ S$ B$ h
end
" Y/ I2 Q9 |* B$ U5 x4 N7 V: M+ D! J/ V8 e4 ]+ i: G/ d) w
to setup-plot3: W; A4 H5 X' z' @" f. M
/ c3 }% y9 l2 \
set-current-plot "Trends-of-credibility"
! i, j' Q  a- V& J$ M+ L& j  s- J  s
% t  B) l. O  |% L0 \- A' X1 p
set-plot-x-range 0 xmax

- B* g4 V( ?/ w, J+ I8 U  n; i4 i! u* H/ X* J5 E2 r$ a
set-plot-y-range 0.0 ymax
- E6 [% S2 {) G% U* `
end
! c5 W7 u. {7 S8 V& X6 j
! ^# x* `, n. P# p- c+ }to do-plots
; {1 n: }+ x9 j, Yset-current-plot "Trends-of-Local-reputation"
8 W' @! k" j' b5 A! yset-current-plot-pen "Honest service"
) \3 A, z5 P$ z7 uend8 G2 q( h. Y2 W/ q3 _. u1 f6 \' \
, T( X4 X; u% V5 x) |  M
[ 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.8 p( c8 W% f6 h% {, K1 A9 n6 F

4 I% n) j. ~; Y% K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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