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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 [+ m3 a! ~3 zto do-business 5 Q9 k8 M" t5 u# ~6 n/ {
rt random 360: w; ^' y1 H" \1 c0 |
fd 1
7 Z0 `' z# F) |8 n) `: Z ifelse(other turtles-here != nobody)[
. I. p+ W' j) ]! s( Z8 S" a   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.1 Y! J: `! N% u" G! s' q" o
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, [: U, Z* C, ]& C; g. C6 f1 @   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 X' I& M7 K. A- q8 O   set [trade-record-one-len] of self length [trade-record-one] of self
2 ]; O' J% s& c  X! X. w6 S& @8 R! p   set trade-record-current( list (timer) (random money-upper-limit)): K1 z; L" I4 |1 k0 F
0 J/ ?/ s- A  |8 H5 c
问题的提示如下:- P/ ~6 u2 j4 K: C6 ~) n

; {. A$ g0 Q; _* Aerror while turtle 50 running OF in procedure DO-BUSINESS
: H4 L5 \, w8 m7 T- v  called by procedure GO
* a: S' U! A  @' q' r7 J+ z" |' MOF expected input to be a turtle agentset or turtle but got NOBODY instead.0 P8 L2 s6 O: b: O
(halted running of go)! l- n% @/ _, m# |# M6 |8 ]

9 h4 {4 @* x/ [1 a+ V6 X% O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 d% M' Y8 r0 ~% X/ z
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
3 e7 a  l  O' c8 s- S* K) h. T  o" d6 yglobals[
( n7 N# M1 ]8 V2 K# Kxmax* M  c: b. f3 i
ymax
% y6 c$ n  r, e6 Oglobal-reputation-list0 I( ~$ l* K2 q+ K1 Y8 l! a

' y% ?, d/ B# O- I& _3 l3 h; p8 I7 x;;
每一个turtle的全局声誉都存在此LIST7 N# x/ z! T) s- ?0 \% C  K
credibility-list
( d3 j3 {7 w8 F5 C$ H% V" ^;;
每一个turtle的评价可信度' v  G, s% O+ @/ c5 a
honest-service! w. M, k- A% @7 n; v2 U; G
unhonest-service5 v5 d/ R% C0 A# q
oscillation, {$ l: W7 U1 B% k: y, e2 p
rand-dynamic
! R# X. f, i: q3 A5 C) h7 p8 N]; `+ e; F2 k5 B3 Z8 J

0 q# A3 b# I. ~& pturtles-own[
) r( ^3 A$ F. `trade-record-all$ ~+ A& o+ H8 J6 g
;;a list of lists,
trade-record-one组成) D: F7 y* r( F
trade-record-one
! a: G4 z& r6 M: t! A+ T;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 _0 F0 o+ d( f( G% B1 Q
1 j+ U/ X6 T6 r
;;[
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]]1 @4 p7 }  a. S) `% D& z+ r  m
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 J- F& |0 k/ Z* W
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+ c) A0 H: f% X3 \
neighbor-total
) k4 y& W6 T( h! z- C; C4 ^) x;;
记录该turtle的邻居节点的数目
0 I) n) {7 h$ ]- J* C+ v8 D1 Atrade-time' A8 P8 o- p5 j8 O9 v, `
;;
当前发生交易的turtle的交易时间9 d6 K' c  \1 J, y" x9 h$ Y
appraise-give
" Y- \5 t( }4 @0 U# ^4 a2 b;;
当前发生交易时给出的评价
$ H1 C% z% e! Y& ?8 pappraise-receive
4 m8 X; ?& p* l3 B+ r, o;;
当前发生交易时收到的评价; Q5 B. g  j! u* n& B/ [5 g: u
appraise-time/ o8 y  P. X; }( S
;;
当前发生交易时的评价时间
3 Q  _; F* A0 u) [local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 }. o3 T/ E5 u: S! v4 x4 J7 ^
trade-times-total
3 h, z2 a0 q1 ~. G* V) `% {! X;;
与当前turtle的交易总次数' |8 Z  m* b2 A, W
trade-money-total0 |! o5 n! `7 y% O# Q; j2 }
;;
与当前turtle的交易总金额" k  K* f1 q6 d) G! s
local-reputation
. d2 d" \' W7 K  u4 k9 ^* wglobal-reputation
  l7 j) s. n9 G6 ^& S  o2 k" Kcredibility6 D* ^. j2 n5 j  I6 h7 {+ C
;;
评价可信度,每次交易后都需要更新
* ]+ {( T4 j3 X$ a8 L7 M" D; `credibility-all
5 s6 `7 z) t  |6 [! E/ K2 S;;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
; q) B9 M5 k& ~( y2 y: R( q, N& o/ ^& g' \' \& ~: k: V! |
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
* J; ^. Z$ S  a" Tcredibility-one
$ D; o2 V, c& X% i. y2 i9 e3 R7 D;;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
+ R7 i9 i- g/ F; z4 M$ ?8 sglobal-proportion) ^8 K# \6 Q- W% b% \6 s
customer& a" S/ L: h# Y- ~7 F
customer-no
% b7 F! l+ T2 @, X9 ltrust-ok
7 Z; {' c( f) g7 l, U+ vtrade-record-one-len;;trade-record-one的长度% \; N9 Y8 R" V* N1 b; F8 ~% \
]
8 V: c3 C* _( s8 ]7 J5 D: k; T& P$ m2 o* R$ T
;;setup procedure
2 X$ N" U. G# @1 m5 D0 k: f& e4 U% f! A" e. y
to setup) f4 y9 i# A4 j$ Z) n7 w) f8 T* O2 J5 P
# Y2 w6 F/ S9 |1 }. S2 t% \. F6 S) R
ca
( R% |8 U$ E5 \$ v5 D$ g
$ y  H1 }0 M% w4 Y: m; }
initialize-settings

7 z2 C! f6 Z5 e: @( a& F! O( w% Z; R, r
7 f3 a" v4 a2 q2 J2 w' `5 u9 X$ vcrt people [setup-turtles]
0 Y  Y. x8 }: |% n6 `
- f4 ^' {  [7 C: K
reset-timer
, U+ K2 @' D! w

* ~& S7 v4 l% k% dpoll-class
, e& l6 [; }( l; K3 E3 F

; _6 g/ q, C: t) {; N5 esetup-plots

- r# T  R, u+ p  U3 D: d" n
: }4 }: t. I( ^- q' d3 ldo-plots
1 c( t7 A8 Z$ _% i
end
" i6 L0 [1 {* U% \: G+ v* [$ N: M' s2 ^2 n: K( p: T
to initialize-settings
  ?% G; `+ n; _9 a2 H1 |
( O/ F, Y1 m6 H2 @/ W- P/ D+ }: }set global-reputation-list []
0 w& }8 y! t8 F& W$ {
- _$ v' W+ ?( V, u- u) o# _
set credibility-list n-values people [0.5]

- {4 j! Z0 R: v( ]- z" l' m/ m' ^: n' @0 ?9 P1 g; h! |7 H8 b* c
set honest-service 0
$ N( ^5 _5 w2 G$ Q

- ?) H6 H  O) Z$ g: B$ Pset unhonest-service 0
/ a2 b2 F, E( I: w( h) i( l. ?

3 p9 D4 l7 r& v. @2 ]# Rset oscillation 0

5 {% [; R" a) K7 u/ C; c) O" Z- M, J
2 b8 Q1 }; W1 {  z& `/ v9 U$ uset rand-dynamic 0

* v4 d. k! [' N3 Z# i* |! D; Kend
0 v5 t! ]2 v" Z2 D5 _$ S. N
( n3 f+ R1 ^% Z: O, q. uto setup-turtles
- Q2 D; b0 H* e$ y9 t0 l  Z  e3 M* ]set shape "person", ?# w: l+ y. s& d6 {
setxy random-xcor random-ycor
3 @% D3 ?" {% S# U) @set trade-record-one []
$ C: d5 Y0 e6 w

! d! ^# }$ K# L5 n4 c" Mset trade-record-all n-values people [(list (? + 1) 0 0)] 2 k4 p4 m$ j+ w  [1 V; V0 p

9 I0 B$ `; |3 {# ?; Rset trade-record-current []
: {' q4 Y" w7 x' i2 H' Iset credibility-receive []  r" t* L- W8 v2 ]6 p3 _( @
set local-reputation 0.53 \* F; o* v/ P# k& q
set neighbor-total 0
8 i6 ?' j- |/ `5 tset trade-times-total 0
( |4 Z% N/ G7 n9 X+ y7 \0 J% H) ]set trade-money-total 06 n4 @4 j1 |2 `% p0 s* H4 |* Z
set customer nobody1 K" d# l  f+ G& h) r
set credibility-all n-values people [creat-credibility]7 @! b# s; Q7 `; w/ r
set credibility n-values people [-1]
3 o. O8 U! |: N5 L" cget-color
6 F8 I# F6 f3 f/ p' h

1 I- N8 n$ E; {( i1 ]1 gend! v+ Z+ c' B) s# r! u; x  J
( b/ e& u! n  r
to-report creat-credibility* C4 n$ ^) l7 X8 V
report n-values people [0.5]5 s# P$ E& y$ b4 n& ~' K4 J6 E
end
9 O& Y. A9 @4 }0 ~% {/ f2 Q' l' N! I* w# r7 e
to setup-plots, \; _; J1 z; Q- w' V1 f! p6 a

! x) ^& m( {; w7 fset xmax 30

  k9 X( v" t$ L  X( {0 _# R7 b% f9 m
" C" y& ?+ j& H8 Rset ymax 1.0

6 I2 M8 h! O9 W+ k$ m
) e8 e* i6 t$ kclear-all-plots

* I  o6 q/ V% R* X; x" a" q# l0 F8 z5 W) B: f0 t4 L
setup-plot1

+ j, I1 f5 K2 @
9 j( r4 J7 v7 D9 w; r7 V7 osetup-plot2

/ H8 T0 V9 V$ E; A+ {
8 B: a8 s3 ?5 U1 Q% r7 A* p6 l2 Hsetup-plot3

8 c& ~6 _# B* |  tend
* d) L6 _1 v  k' v( Z9 F
& o$ }( l, M  J9 Y1 o$ W;;run time procedures
( Q; D, c% O* B% ]
3 D- b' j9 j( Pto go. d! [5 X- O1 ^/ }: x$ v' T& [$ i
* c  R- `5 y, I' S8 o5 j
ask turtles [do-business]

) g( {, a# l# G5 i! [6 Aend( s4 E& b# M5 B0 s

! e- ^# I: z( b( W* |0 g1 \& K$ |* zto do-business 4 x8 T$ ^2 S3 Q6 U

- C3 U8 v* A2 e& l3 F3 C3 d) @: T% J* r' L
rt random 360

' w' H0 y* V3 I: N9 j! c
& H$ C" b6 O# y( Yfd 1

9 v: }; f& k/ r9 s3 j( o
! k# |3 O. s. Z; `) o5 Y, Uifelse(other turtles-here != nobody)[
* x) t( n$ `3 B- A
3 y6 j% X  c/ Y/ z9 ^# I( g$ J- F
set customer one-of other turtles-here
9 Z) u3 g3 q) B1 l. V

' i* l: O# g" _  N: t! g;; set [customer] of customer myself

# R- X5 X* _  ~' y5 m$ _$ O8 P( E% v0 n$ S$ Y
set [trade-record-one] of self item (([who] of customer) - 1)
  q3 v( m) G! d' D5 P- H[trade-record-all]of self
# j  A3 \6 `7 L;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 h# Y& V, B/ v, s* p' E
2 H& U2 a2 @. K, c# G- pset [trade-record-one] of customer item (([who] of self) - 1)
' y3 F  z, C! K- r[trade-record-all]of customer

9 c8 V" C" p! h2 h8 R
& Z: i, \: o' V# f& @- x+ h. ]7 qset [trade-record-one-len] of self length [trade-record-one] of self

, I% I8 W1 d9 |+ I
& [: V; o" w( F) U. I8 T0 T$ Fset trade-record-current( list (timer) (random money-upper-limit))
# n8 Y6 q% K$ V  w3 I% \* s
/ \+ a# d- l- u$ _/ V4 n1 F
ask self [do-trust]$ B/ p, u5 i! M/ W2 k
;;
先求ij的信任度
# X& C/ p6 J2 V/ K8 X
& L; h% F- D- l, O9 w; i4 ?" nif ([trust-ok] of self)5 C# p8 \5 r5 F( @5 V8 Z, Y
;;
根据ij的信任度来决定是否与j进行交易[" K2 m0 {" K# }+ c4 J8 l
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# }4 w* V* {, v' [
) l# d& j3 R# a1 V- i1 S" Q) g[
2 x2 Q, N* f) E4 ?9 p( Q5 R
# k) \1 s& H7 t9 @2 A2 g* y
do-trade

: |  @% X; X( ^% Z$ i8 x% [
0 ?1 M8 m: K2 ^) D% Aupdate-credibility-ijl

5 X' L% M- e3 D
, [% R  g3 W5 C  D& i6 B# e$ Fupdate-credibility-list
- ]" l9 r* w5 ^$ Y4 Z( ?
  l7 ?9 u4 P+ h

$ o3 R  ^# E$ e3 _3 T8 ^% dupdate-global-reputation-list

7 `. N: M/ ~2 }; x  ]" T
8 q9 v  G2 U4 \, n8 jpoll-class
9 k, R- k' g$ O- d: {* H9 {

9 w+ y4 ]8 w: b! J# Hget-color
6 \0 x9 ?" ]1 w" @

2 O) }& _# _% q8 h]]
2 F+ ^& x9 Y+ {: m7 _( j0 y. w
) V" o9 b5 h( V3 P* N;;
如果所得的信任度满足条件,则进行交易. V) W0 {7 r' t/ B; ~) Z
( _& w7 S4 }# W
[
$ ^0 Y0 ]: E6 Q( J
7 v9 X$ }3 p! t- ^" Q5 q  u7 F2 ?
rt random 360
- s! j; w& ?0 {5 n7 e, j$ }

/ X$ `0 L0 \/ G1 z7 ^fd 1
( Y+ U0 h) X+ Y

" f+ z" s5 J9 S8 m% ~% \]
4 S$ n& I3 w; ?4 L. p1 _* @

% N3 M! T1 v* J; Zend
* C  ~. x( V/ ~8 r4 k

  n! Y% B/ Z% J/ N0 E8 V( wto do-trust
$ \: h& N" G- ?) x; K0 G" U( E9 Mset trust-ok False
% O$ w5 m; C' p5 E7 q: Y
. [. z/ n% p: ]2 S
% ?! l$ E5 q  d" \. X# P% `( g
let max-trade-times 08 F1 [  Z% I+ X  ?. n& h6 o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 A4 m% l+ J( i9 m& e2 h
let max-trade-money 0
- e/ f. I, U2 jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 M" ^7 |' q) P3 ~) ]- K/ klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' O( y7 X1 k) D; u# W  r# J' ?7 t  t' h" N% w4 }. X$ k
7 Q0 ]6 N' R8 I+ y! J' a6 R) E  `
get-global-proportion( w- I0 b( ]" d5 Z$ S6 w+ j
let trust-value. S9 }7 C4 `1 [0 l. z" z
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)

% L! B0 B6 g9 B, j5 _5 Y1 g; R( ]if(trust-value > trade-trust-value)
0 I" f' a% q* e1 M9 k& Z# t6 w[set trust-ok true]: ?! @* d' I& s0 S; L2 j& t! c
end
+ o& h6 i/ k1 j' R( y! y1 y5 C( ^% ~; G
to get-global-proportion
$ p) R. K7 O! d; P1 qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ @- H2 j/ a+ ~[set global-proportion 0]
  Y$ n% \. g5 J& n8 p8 \+ z/ m[let i 0( M* |* K% a; z" t7 J1 ]
let sum-money 0
1 q- I8 G  u. _" p& Fwhile[ i < people]
, i# @3 `1 p% n4 F[
  n% K7 n- C# }0 {+ cif( length (item i
# U( O0 o* W! ?/ r[trade-record-all] of customer) > 3 )
$ {5 b7 u- U# G  Q' I4 z3 w
[/ g$ s1 B  t+ Q4 V7 L9 U
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& L( d5 Q8 i9 M, E5 |
]9 r3 ?6 ~& R% l  w% s1 o
]+ N& p" x3 o5 @* _, S6 t  O( o
let j 0
( T3 l+ C! f4 Blet note 0
  `$ G* N- B+ ]! {/ ]while[ j < people]
4 |0 E/ I) H( x+ L8 k! M[
; H; [6 ]: B$ w7 H: {$ Z; vif( length (item i5 Y4 x1 S- p: t6 m+ s
[trade-record-all] of customer) > 3 )

8 }# W* v0 U* [' ?) [3 ]" G[
; T* X; Y6 w" ^ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 _" m+ _$ l, B( `, o[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) X4 C! b6 J% I; g% R" i6 b
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 G. H3 k" v- W8 e' L5 l5 C]9 d( y$ C: I+ w# x! t
]  h. m; r5 w) V% L; g5 C
set global-proportion note$ b# v+ P+ ]) {( T
]
9 \3 M- h. u& j( B) M" ~end
  X1 n5 y% M7 K
, ~3 H& e$ }# {# N1 P6 fto do-trade
# L2 a& y9 x4 V% x, \  P- e;;
这个过程实际上是给双方作出评价的过程
) |7 L' @/ Z5 W6 R- \1 n" V  oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% F4 C( [3 [" i" N, Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ Y4 U( j1 t! pset trade-record-current lput(timer) trade-record-current5 A  j9 M) I! i) J2 _* |1 x
;;
评价时间
' G, j3 s, y1 W1 U' y6 gask myself [' W7 G) c' N: u  s' l2 X3 |4 N
update-local-reputation* O( A/ Y4 r: l7 g* B( H# Z& A! a
set trade-record-current lput([local-reputation] of myself) trade-record-current
+ ~) `6 O0 }4 q- A]
5 {/ u* P8 ^4 i# Q7 ~: ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 e4 K- v6 h2 r! A0 Z0 m;;
将此次交易的记录加入到trade-record-one! }+ y$ {: C2 m0 T
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); V) a2 [: V# z( ]4 u
let note (item 2 trade-record-current )
$ [9 o6 W  ?( fset trade-record-current
1 d: R# M2 y+ v% a. F. f(replace-item 2 trade-record-current (item 3 trade-record-current))

5 M- `7 C" o& [3 z( W- y5 W& `set trade-record-current) _( O. d5 F3 Q  h% R
(replace-item 3 trade-record-current note)& y  j" F  ^6 o/ Z
/ T* S( @& X0 O+ ~. o

7 R0 y! D- b! x$ }' V+ xask customer [: X# p' e8 I( L' ?4 t& R, ]0 ?
update-local-reputation" Z& h8 P7 F# P/ d1 N5 E
set trade-record-current) @2 K# P+ [# s6 {
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 o4 {- ]) O8 f$ [$ G7 O1 C
], O$ {% e: f7 u7 A

% Y' E+ \: V/ r3 R

( A% M4 o2 u+ Q- pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. e$ V2 _1 W" I* p

4 J4 O& g$ y- W0 R) T. oset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! O; y5 S& k' ~;;
将此次交易的记录加入到customertrade-record-all
6 e2 j5 M& m" Xend
) C5 h" ]9 R" g& g% s" r) i8 f# v. Z6 l$ o
to update-local-reputation
/ N) L5 M6 i* j2 e+ ]/ `1 \set [trade-record-one-len] of myself length [trade-record-one] of myself/ Y( l" k9 l7 W8 d+ U. N
$ N: u/ [' X/ {$ w; h. d8 _. m
. m7 J; u% ?5 a
;;if [trade-record-one-len] of myself > 3
/ p& B  s' y0 F3 b* D5 H
update-neighbor-total) q/ j& k2 j4 e0 p
;;
更新邻居节点的数目,在此进行
0 N5 ]; c2 W' G) i% @let i 3+ y8 X' T/ Y5 F8 T- _
let sum-time 0
, g& U( L; ~9 F. T. b1 ewhile[i < [trade-record-one-len] of myself]
9 `# b4 d0 [+ P) N[
7 o: y3 N$ a' Q9 K) Lset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- r, k# a9 K& _1 l
set i' ?5 Y5 H1 \% g1 S+ V
( i + 1)
. s* j; K2 Y- Y4 B
]- `- w3 |1 N" e$ }6 I
let j 3. M" A7 n& p" N& X) O
let sum-money 0
% s. V6 X' s( {6 q* @while[j < [trade-record-one-len] of myself]
3 y$ e0 F3 Z" P& a  a" X- |[
2 n! ^& L9 i" r9 Bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
; Y9 b# ?( Q* m4 jset j) P  F& g% P8 W" K" @' D/ Q
( j + 1)
5 A. O# v+ @2 [7 h8 X3 S: r
]
! y* g" Y8 }) plet k 3
6 N, r7 h/ \/ F; E2 Wlet power 08 y; }+ L+ l8 _( W% _
let local 01 R* k( L: H( B1 |5 {& l! N
while [k <[trade-record-one-len] of myself]
* C* a' d# W2 h  B, q+ a[
  W5 _% N  \% y, `  ~6 vset 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) 9 b! s) @# e4 }- u
set k (k + 1)
5 F# z" ^7 B) Y( a: m]
% l. m4 z( n) p+ ]2 `- R2 y5 wset [local-reputation] of myself (local)
& M7 [* F9 g3 N6 y/ |- send$ X1 L; k( _; d# A4 K9 u: ~

" t- T8 ~, Y6 Kto update-neighbor-total
/ F; D# C8 r1 P* f6 r/ A" }. w; D# S4 W
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 v. n+ X* V: w- b1 ~

8 l, M3 @) n0 q
, O6 [4 R5 b4 r( j. k
end
3 Y( E7 }" x% U: H+ C0 _
& v) A4 R) C* Yto update-credibility-ijl % E( L( y. H" S6 f9 y; C# W/ J
+ R9 }. ^8 e9 K
;;
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。/ P$ f, C1 L1 ?$ `7 `" w
let l 0: M- t6 D: a; _
while[ l < people ]* [8 j6 X2 |" _7 `; `# _
;;
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* c& {; l" K3 S0 s7 |$ D
[1 T# e# n$ j& g  G$ u
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 `2 X0 s5 h3 Cif (trade-record-one-j-l-len > 3)
8 m+ ^% ^% v& 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
8 T3 d3 [2 B" Y8 ^. W9 z, J) Xlet i 3+ d3 H( F! h; J% J- U1 W
let sum-time 0. ?$ ]% O) D9 m
while[i < trade-record-one-len]
" R7 s. J2 U. V+ B: A3 L[
: W  {3 b7 F. k& i$ t( H4 Bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* J% T, R" {; L% T8 P- T" s
set i
* v  p4 o9 o9 p) K+ }: _( i + 1)

3 ?9 h. ^( ~) V6 R. t], l, S5 P$ }. G( c- Y7 t
let credibility-i-j-l 0# b, D1 w+ P8 }& c& g7 \7 D1 K4 t  \/ k
;;i
评价(jjl的评价)) U$ g# r6 g+ @
let j 32 D3 e& H0 ]; K! s7 [% j
let k 48 e# X8 A% T$ H
while[j < trade-record-one-len]& I3 M7 M8 v* X8 y- b( i+ {0 K! K
[
: j" I6 U1 d/ Y5 N: Pwhile [((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; P; g/ [8 O6 p; H8 h9 [$ c6 k
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)
' M/ e2 K' |" ~% C- _* t9 f1 r) Dset j  K/ z" l* s, A% M4 ^' t
( j + 1)
3 W8 V# C$ ^% C% p' C! o
]. G, D& Q# {; u9 N; T
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 ))2 X$ t5 H$ q% x2 a

, k- b  I; [4 K2 Y* U

2 G7 d! A3 |6 Y# q: V2 e( p2 zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! `7 @& ]) ]# H
;;
及时更新il的评价质量的评价; y$ e* y% n! P  V
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 X* @/ M6 r$ G: ~  T6 `1 X
set l (l + 1)4 r# d5 o/ z/ o; n/ L
]# U: K: C  M* X  E) H
end
% }0 X; Q9 P% }4 m, l. t! n/ t
4 Q3 s/ n7 p6 E3 W+ A  \to update-credibility-list9 j7 l: W% R& M5 l
let i 0
, ]7 h- t2 O; H) U! R+ K* @while[i < people]6 V" f" t( Y" d; C* P
[
- R7 x+ a* l) Y& }let j 0: g6 d  X/ s' Q  X9 y5 N
let note 0/ u. J+ v! o0 k; b2 P
let k 0% H" C8 S. d, j
;;
计作出过评价的邻居节点的数目9 U9 i2 c) s) ^4 p
while[j < people]/ I9 }( U5 K5 t) u# k
[
9 b+ p9 s' \  c+ n  U! @! U' ]if (item j( [credibility] of turtle (i + 1)) != -1)- f; X' v. K6 z# U; g
;;
判断是否给本turtle的评价质量做出过评价的节点$ u% A0 W6 i7 x8 [
[set note (note + item j ([credibility]of turtle (i + 1)))6 e- g7 N4 G2 D5 T
;;*(exp (-(people - 2)))/(people - 2))]
7 Y4 c0 `) c! z6 L
set k (k + 1)
' W% W# ~, ?  V, `]
/ w: N% }) S% h; Z& g+ Tset j (j + 1)
0 _4 V7 P; t' Y1 ?1 \]
6 ~; v3 A+ H0 V) ~8 fset note (note *(exp (- (1 / k)))/ k)' s0 i, K5 i2 S1 s
set credibility-list (replace-item i credibility-list note)" H- b- }: ?' ]/ g. t- T
set i (i + 1)
2 k# p+ z# I& j1 @]8 S7 r: H2 s3 C% z& N* K1 u
end! Y1 K2 l8 j% ~: u; \8 W) |# h0 c

% k8 Z& r6 i8 U2 t; J1 p( Eto update-global-reputation-list
1 t- C9 p( u# P7 \let j 0! F' g% V' _7 y/ l0 n' w. D$ t% {
while[j < people]
  f+ l+ m8 }' a9 ^9 B[/ R4 s6 y8 k, q% e$ N3 D
let new 0
5 g: U, W. j- X# [3 U- Q+ h# b;;
暂存新的一个全局声誉
( @: Q. K* Z8 L( ?let i 0$ H0 K1 R7 U4 O; I) ?: z- Q
let sum-money 0% S" _9 C7 ?/ B, T7 n1 e
let credibility-money 0% G% o% m# z" V0 O/ j! _
while [i < people]
- w, q2 _, n  G6 ~+ D  p1 B[
# t6 _" Q+ c, J0 }) K) ^set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ \8 A9 Q8 _- ^- O1 Q9 e; x0 Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ {6 @* U5 ]8 s/ Z
set i (i + 1); }, Y4 F2 p! y2 y- h7 k
]
, @- \) T0 r: ]" l  F: G2 Y- ~let k 0& S; [, f$ i! G9 b( U& q, m
let new1 07 `9 D0 @1 N! Y& w8 F
while [k < people]
& c) e: ?2 H0 {4 p( v[( N3 e% |% b. C+ f
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
5 b: w! O$ W  F. J! ~set k (k + 1)& O5 \6 f! W" Z/ d7 F% {- M9 K& h
]( N8 N7 Q1 b. H7 J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # m0 B1 F' F- Q, B. f
set global-reputation-list (replace-item j global-reputation-list new)
6 O( ~6 H3 f5 c  k9 T5 U+ ^set j (j + 1)
" J0 K7 p9 l% z* i/ r]
0 H2 T7 b; u' o8 d- a2 H! aend
+ T+ R1 k  R# J$ X! @- t) q7 r4 A) q
) V. e/ N7 Q  _$ \5 y
$ [, E! j  y7 v- L+ D! ?8 A- @/ f# g4 j* M
to get-color3 S5 E- q2 z* h! t9 R4 e

) |# ~3 F8 `% ]1 m( }set color blue
9 l. S$ \- r* ~& Z% I9 z
end  |0 y, x; {7 v/ J1 }+ P& z0 w9 }
0 l1 }; w! @  A, c( i9 V3 W* i& w
to poll-class) d: L4 w' ^+ V5 e: j+ x; ?0 I1 z
end
# k+ M$ w* }5 S" |) L5 n9 W4 h" A0 D0 c9 t+ ~  a* t  x
to setup-plot1
1 `# w7 C: F! y3 `, p! H" e) ?. }  h( `/ u9 M& X
set-current-plot "Trends-of-Local-reputation"

6 @# C! k3 ~7 I! r& v8 e
7 z8 S5 a- [$ T6 r! tset-plot-x-range 0 xmax

. @! F9 u$ F) M5 B* Q1 N: |% x& E' O/ \/ c; L6 ^2 Y0 ~: I5 Q* Z' \
set-plot-y-range 0.0 ymax
" {5 y, d+ \: R1 r4 ^5 E
end
" q: G/ F' a6 M6 }. k7 {1 A
! Q$ @+ T: V: `0 F) Vto setup-plot2- I- H& {$ o1 N& f) h9 l. N3 k7 k
+ ^4 C. L. E' t' u9 y
set-current-plot "Trends-of-global-reputation"

: T9 x, Q2 S. a4 ?% X5 L) {. j: D: I/ Z
set-plot-x-range 0 xmax
: R1 V/ i2 H$ Q8 u7 z- D

0 ?# a4 \! l2 b3 hset-plot-y-range 0.0 ymax
$ E+ x' I- E) z1 e9 p: ^& f8 S( G
end
$ W4 c3 Y1 i5 y+ h. h. K) X' t( z8 i$ z" V! o+ r
to setup-plot3' ?: c/ Z$ t7 J1 A5 U% d/ ?! X

/ D3 {  u  M" g$ m4 Fset-current-plot "Trends-of-credibility"

, n$ E; p/ U6 {. L% x
- b  s9 O" U5 J# H/ v/ \set-plot-x-range 0 xmax

) R2 ?! ]/ b5 v7 @" h4 T! D7 b# s$ U& K, L( |( X
set-plot-y-range 0.0 ymax
2 C$ h: L- |7 H0 R" \6 F3 U) M$ L" s
end
5 `$ s2 E9 u( J" U5 l
6 G$ X; H2 i  m) T2 sto do-plots9 K2 ]) T1 K2 ?: a
set-current-plot "Trends-of-Local-reputation"
/ q+ h' T! C* n% }7 y( N. X2 Hset-current-plot-pen "Honest service"
; U. N0 M! F0 m; ?! `8 j9 Tend
6 o% a' P; I" I8 a$ L  R- }+ _, \3 k) R& 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.' d" [7 Z" h* L
5 L8 Y1 B$ @2 @8 n2 c4 F
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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