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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:, s' H( L, U9 Y4 K: c- ?
to do-business
' D7 P! A* J- \+ H' y& r4 A, g! i+ Z rt random 360
) V7 P6 B6 o4 |) ^/ t! r* O4 F- P fd 1
  i! r" e5 {  d2 {) W( Z) l4 c ifelse(other turtles-here != nobody)[
% [4 w# k9 u9 `) V$ r   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.
8 P$ D. R. Q. z6 F7 S   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# ^: |7 M) s1 l   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 A0 }5 o5 p; o: J9 b* e
   set [trade-record-one-len] of self length [trade-record-one] of self  g3 g5 E. M/ D
   set trade-record-current( list (timer) (random money-upper-limit))
6 R1 @1 L, E) Z9 h) Y9 Y
* x- x6 j# ]' W' |问题的提示如下:
2 t. [1 [( t0 a( }6 p9 z3 B0 V' i# Q, @% B+ f
error while turtle 50 running OF in procedure DO-BUSINESS
+ C. z% I/ c( v8 x5 P7 h1 ~: Y  called by procedure GO0 T4 t( f6 m2 `
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ Z" I! @. {6 V& z
(halted running of go)7 x2 i% e4 E1 n6 F# h- r
& I7 G4 }% N- ~2 B( Z
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~~" B/ c1 t" J9 H/ Q* H0 o0 l$ E
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( M% a& m# v  y/ B" Q* `4 c9 V
globals[
1 {# Q% A  j0 D- {$ r: R+ o* Mxmax: l, n1 O+ J& S
ymax0 D7 }5 O$ d* s% x' W
global-reputation-list
  s( z3 w/ y1 @5 O: O4 }0 t! d* q3 ~
;;
每一个turtle的全局声誉都存在此LIST* ^! F% r$ x$ R- E0 k" G
credibility-list3 [$ S  g2 q0 t8 z( b0 z  e
;;
每一个turtle的评价可信度
' X: d) P' Y/ Khonest-service
  r0 b! A- A, |" z1 Bunhonest-service
7 ?- d  `0 J& A/ @oscillation
% I- C3 y. _3 k8 ~4 b( Jrand-dynamic8 g0 D6 e6 z7 z4 t% ?" e
]( G3 d" k4 P8 }% H! C) [
2 m1 Q1 ^0 [& t; V! t* G' G
turtles-own[3 |, _, {  f; ?3 Q
trade-record-all
3 z1 t; x  j7 @' u" D2 e! j;;a list of lists,
trade-record-one组成
" s: `, V/ M% k4 O$ Q2 K1 L7 wtrade-record-one
. n2 I. ^) Z, p;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* b9 G8 w! [: k% w; }! ~% h# R: Z& x+ k! i
;;[
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]]& B. _( s/ u/ x% I* \' R( ^
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]" V/ `' j: Z$ I- \; c9 S5 ]" 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
6 t" @6 V/ A5 Zneighbor-total! B  D# v, ?  T/ o( n0 P/ W( x
;;
记录该turtle的邻居节点的数目
( }- z9 c; ^8 y5 g# y% htrade-time* x  Y$ U# @; K% q% z; I: W
;;
当前发生交易的turtle的交易时间
/ q$ T" C; n0 T; u# Z  pappraise-give7 A! a" p! m2 e9 v6 V; h  x. T+ T
;;
当前发生交易时给出的评价" u( M2 q; `  F* t( u5 S, P
appraise-receive
; {5 z4 E% \: J  I8 }+ `- `;;
当前发生交易时收到的评价
! h" v" O) X. ~- pappraise-time  B! E/ K3 y8 y. c* ]4 l
;;
当前发生交易时的评价时间" T! i) O5 s' c- M' N) k8 l! Q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉& v' d8 Z4 z! n: T, L- y4 b0 q& e
trade-times-total6 B* D0 M  K/ N5 |
;;
与当前turtle的交易总次数: a& l* B7 d1 j  L4 X" O
trade-money-total
! ?( n+ o- d- ~" \* k# ^;;
与当前turtle的交易总金额
" _, f( x! [$ P" t6 Glocal-reputation
# A& j% X& v' i: Bglobal-reputation. v/ E' Y  U& s# R' U  j5 M9 U3 d+ w
credibility
6 g8 D- H( R% a: B) p;;
评价可信度,每次交易后都需要更新; U( V, d& k- \/ j6 n
credibility-all: y3 L9 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% u  H9 N% d+ O' h8 z% e" W

1 L1 i# L0 q( `+ l1 `$ r" M/ @- Q;;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0.59 l/ x! \5 g$ T9 t% F
credibility-one1 _$ O* L, m- Y# v
;;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' ]4 P) ^, j- I; \- m, h+ t
global-proportion, `7 p. I. M. t: K+ ^. ~7 f. `: u
customer. K2 s* p, }5 ]& R3 g% Q! [
customer-no* d. u7 A9 c1 I: \. N0 i' d. g1 R
trust-ok
2 S+ C6 b6 V! x4 }1 Itrade-record-one-len;;trade-record-one的长度& g) Q9 Z; Q; M; L" y
]
! o3 j. y# J$ j6 W% S  J) _, m
' l. t: A0 o& K* w( C5 x;;setup procedure6 U; D' [6 g  a3 M8 [; `
+ g( n2 A' W, J: b( x
to setup
: [* j$ |) |- h; K. T1 y
! K" U7 ~" N, c& E2 {ca

# ~( Y" f" t# z5 j8 D7 E& t- {9 Q3 G: D
initialize-settings
! J6 j+ {8 b' o, r

1 \: ~: |; S* jcrt people [setup-turtles]
4 }9 x- @5 D5 q; q# i

4 c8 Y2 h# c/ E* L, Breset-timer
- W7 m+ w, p; U  C/ O

9 E2 Z) P( _- p3 B$ A' M8 r' p1 Hpoll-class

( B, F  C/ ?! o+ v- q8 \
5 a4 u, l4 o9 P* p: f( hsetup-plots

& T: ]! g9 y, {' l# o$ [1 I3 F& B/ A
do-plots
, _: ?7 y' y  H  r( h* y/ L
end8 z7 _  z8 A# r" Y, x: X9 p, P1 n
( x( T4 c; T. f! T9 P, p
to initialize-settings
3 L4 z8 @; w8 D' j- J, S* k  X$ h: H( v1 }" s
set global-reputation-list []

7 ^- H0 _" H1 q3 Z
, l3 F: L* e/ Mset credibility-list n-values people [0.5]
. b7 b7 E2 ~, G. W

- X' q, p$ r! O6 V/ _& Z* Kset honest-service 0
- u' B" |( }: d: }) R
5 b1 k+ H/ {& H' G# E# D
set unhonest-service 0
" N% `; e" D7 }8 j4 z
3 T; P/ w8 n6 ]0 c9 }9 v) f
set oscillation 0

2 a& N9 o4 i/ s$ @0 S- x0 {9 `- G" R3 k3 v/ O
set rand-dynamic 0
8 u# z' \* l3 }6 [0 b
end
7 J; _  N6 G8 [, r- ]3 a6 f$ M, E; r9 G$ Y$ I
to setup-turtles 9 d% [9 \; P) o' p& }! M
set shape "person"/ ^, z7 i8 D- P
setxy random-xcor random-ycor$ W( D3 D9 r6 F" P
set trade-record-one []- M+ O' P+ M. W$ M! @
- J; x3 e5 U# n2 F' G7 W9 M; l7 K
set trade-record-all n-values people [(list (? + 1) 0 0)]   g# s9 C6 A  k6 a8 W

: O1 B- [* V3 D! O( Y  Lset trade-record-current []6 x; a, p  S; I( T$ ?. E% B  Q
set credibility-receive []3 ^1 l+ I9 L3 I0 H
set local-reputation 0.5( l; B3 j9 U0 v# `2 O$ f: D
set neighbor-total 0
- }4 f9 X2 U4 v# y6 S( \) A% Iset trade-times-total 0
: r4 M) z: C& w( Wset trade-money-total 0
1 {9 A4 U$ `" L( Q. \" ?$ Pset customer nobody- r3 m) k6 t2 {2 {- o
set credibility-all n-values people [creat-credibility]4 v( f8 f, @# a* p% J5 w8 \( D
set credibility n-values people [-1]
- ]! ^. k5 O' rget-color) d1 w1 y! T; F6 n/ t5 C, g. H- g5 q
. s! O3 w3 {7 }$ L! L5 C# n
end9 c( T9 U9 B$ E: y
- `) e5 I! u$ {. t" J
to-report creat-credibility
, B# D+ h3 z0 i* K( b+ c6 q+ h& h- ?report n-values people [0.5]
8 b! N) d9 B: h6 y8 ^7 O7 cend; t. `8 _4 c( k" H( g* Z( K

+ L% q9 ]/ r) E! w  M4 \- X. sto setup-plots2 [; s( D- R: \# I' {6 e7 I

' E5 _' R4 N% x- rset xmax 30
# q0 G/ O  d8 z1 l4 ?$ z) N" I
7 ~: H4 D6 a' W4 R! g. q
set ymax 1.0
0 G9 N0 h; s. _% E  Y$ J6 P4 C

- Q1 |/ o  u9 B" Vclear-all-plots
/ {* y* g; Q5 A6 f
) Y2 q) M3 N5 ^/ P2 @! o. x# u
setup-plot1

9 M7 E: T  \5 _, e
: D( U7 W$ v. R; k+ G7 ^* ^setup-plot2
8 G# f% E6 f, C1 F5 j

! j/ c; o7 h) m2 C5 fsetup-plot3
  v# E5 @9 U+ k1 l- u6 J
end
/ H3 n; S8 X) n  h" Z% c" @) U. S/ |* C3 M
;;run time procedures. R6 i3 y7 Z0 q* [

2 k+ R2 i6 p/ M3 p5 n! Mto go
3 y3 y  z  X- \1 G. ^) [* X
$ q& \6 k2 X0 v9 eask turtles [do-business]

( p& _% M" c8 I9 Q4 h) |9 Vend
" p  c  q# G* Q. \
: ^/ b. V% c/ v/ mto do-business
/ L7 e- F8 f) k2 O! Y

- L7 d' y3 K% X8 K  d& {
' c, g5 N8 ^; G9 W: R5 d7 Yrt random 360

  E% T8 v0 B& k7 n+ D; y
3 P5 \$ W1 w' G1 Q" a" bfd 1
5 ~, b. b- B5 n! k0 L4 J2 l4 I4 g

' Z3 S/ F- l: _ifelse(other turtles-here != nobody)[

3 M; \7 Z- }) q3 U+ l8 f9 ^( ?( N4 l% E) D9 S2 Z' q3 k
set customer one-of other turtles-here

, _$ {2 y# M' A# f; B3 ~/ n' k0 c9 O! Y& M  `8 ~* K
;; set [customer] of customer myself

: g( H6 D1 h  w8 X/ [, X) m/ Y2 p# r9 W. }
set [trade-record-one] of self item (([who] of customer) - 1)
! e2 |" V  Y# {; b[trade-record-all]of self
. B+ z7 a9 v+ @! P# t( F* c;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 [! V' Y% N* ?

2 x$ d+ z2 J- _set [trade-record-one] of customer item (([who] of self) - 1)' x2 B: Y; _7 L9 P) V
[trade-record-all]of customer

) S" n) }% [3 A* W( Z; J+ I3 ?# u6 s, Y. s; T
set [trade-record-one-len] of self length [trade-record-one] of self
" k: R2 Y5 H( J/ K$ x

2 v6 L8 B( u5 L7 Gset trade-record-current( list (timer) (random money-upper-limit))
/ z' p4 }5 \0 d! J4 \, R% p

: R9 u! b2 ^' y3 M5 C. Qask self [do-trust]
$ y0 b# h& E9 j9 C' i. {( p;;
先求ij的信任度
8 N/ A6 y( N# d" B2 v( o9 J
8 a& t! r2 ]4 O4 m  B) t6 G+ [if ([trust-ok] of self)
5 j  `* ?7 F( z+ w/ j;;
根据ij的信任度来决定是否与j进行交易[
8 U, Z1 n' z% K: g( Vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 e" c3 Y/ |5 ]; v6 H
$ i. D9 Z+ Y, _
[

' a- R! B$ }1 E7 C1 A7 c/ Z' N$ l6 I. H
do-trade

, _% @/ X9 _" d5 l; @& `% \4 m: v! F. F& B  s2 z: j# o
update-credibility-ijl
: _4 o# a* a- N+ d+ L# I' u: n

9 R3 Y; Y3 u/ }: v' s1 {update-credibility-list
. u2 `: U7 R* c, e1 R. B/ w
+ B7 O+ d5 _$ Z  i

$ c/ c9 h3 ]6 Z8 `. G$ Qupdate-global-reputation-list

" e( p; [8 U% q$ _
2 z; m1 o: z$ d  J" I* G: @poll-class
, {; i- {* j4 |4 v

" r9 H) n6 {1 U# `6 X4 hget-color
3 A& w# W/ q" X
& b( x4 ~: K( C) z+ F' J
]]
% V, q4 V$ A/ ^& l
% D1 E; D8 m3 K% B;;
如果所得的信任度满足条件,则进行交易: `" n2 ]) |0 c7 }
  g0 w' T4 W0 Z4 s( ~
[

% s; x/ \  \; }( P' a8 k5 c+ T6 h+ n% ~5 c
rt random 360

- ]: X/ F- |5 d4 S% [: X) ]" y1 o
fd 1

0 Q6 }( B- S# A' Z4 g% Q
9 B* ~7 ~6 \9 z7 T# o]
! j' T4 I( b  `3 g0 N+ D
0 C5 [  j( s6 h9 M
end
4 Q( k0 a! [9 j* T: H2 J$ |5 }
: {/ ^% T' N6 Z8 d
to do-trust 8 h: ]/ Q# t! [' v8 \7 U$ R
set trust-ok False/ [8 [& w. U1 @3 M

% f* W$ y2 {% [) _4 u) R( N7 _

1 k7 o$ W* O3 L0 f/ ~7 A* Alet max-trade-times 0
9 L4 e4 p4 U: i* yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; L+ u$ u! b3 V) wlet max-trade-money 0
( ~/ {  @1 s4 x1 N) }3 h7 ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 I( X, B! @: p  z7 ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, G& l! _6 n9 r9 J2 ^9 @
0 f8 f/ ^2 o- n  Z& d+ m  ?* s( o
8 q9 c3 r" a  A( A! ^
get-global-proportion
, o. ]/ i8 a" X  j9 m, {let trust-value, a; t) C# |# K: 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)
+ Z6 {  g/ z7 [, Y
if(trust-value > trade-trust-value)5 ^8 w0 D) Q" s6 ^2 i+ \( W/ q
[set trust-ok true]
  r1 ]+ h' h5 |1 v- d# cend
* F' H/ @2 F" e4 T6 B# g. O8 h) B, T$ ^' B
to get-global-proportion# r/ E8 R* X3 i0 M2 ^5 H( e6 S
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 Y& j3 E5 u% I. r: R2 Q# `0 z0 t( t
[set global-proportion 0]& B1 F. L9 r2 o( d8 \/ f2 K
[let i 0
$ U! H0 B5 ?& B! Vlet sum-money 0
* O5 s& [8 L& }$ [! Y5 ~while[ i < people]: d% t! ~8 }) v: c* @+ v; ~. i) H  h
[2 ?9 L2 M, K6 }4 {- w
if( length (item i2 }" D4 Q/ L* x% G4 |! c1 V
[trade-record-all] of customer) > 3 )

) H6 M  k% I5 c" L& l. u. S& _7 I[
6 J! L  d, o, T3 x1 ~/ Fset sum-money (sum-money + item 2(item i [trade-record-all] of myself)); n, s  m! y) l: s7 j8 }; V
]3 ^4 b5 E) N4 H8 j5 m6 t
]( q2 x% C7 j; ^* _, b
let j 0  Z5 l# Q9 L/ E8 f0 ~" j5 ^" d1 Z
let note 0
$ v2 y9 G. q& I# xwhile[ j < people]
- C# I/ S' N( Q8 L( Y[" T- _* S/ h  s" c8 |* R; C- L( a* m8 L
if( length (item i
+ M2 _* j3 `8 |* T[trade-record-all] of customer) > 3 )
9 R% ?9 ]* d0 c$ c0 q  k
[
$ w" [2 C( a: t7 Sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# d. Y! m" `' ~6 O# Z- z& }[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ n1 _1 E6 n: k& q* l$ [
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: c6 H8 Y$ V5 L6 s( v
]
* F- O" E" k: d3 a]
  _' n' k3 B2 w* B% Z# `: d: Jset global-proportion note
7 o' f, I4 P0 q+ g]
; q3 ]. g: C' B! P# v  V1 w& ~end- J8 w6 M7 o: M* P5 _

' I) |  f1 Z- ~8 V# zto do-trade( ?5 @% d6 M* f+ ^
;;
这个过程实际上是给双方作出评价的过程
" \" L8 S6 n8 z3 tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 T7 o5 O7 B( k/ Q8 y0 u* w9 b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# L# S7 @  U5 d$ {3 A4 T. T
set trade-record-current lput(timer) trade-record-current; i  a9 ~* R' [; Y! h
;;
评价时间
5 U4 c: j+ N2 _+ }5 t& {9 Lask myself [
$ [& ^! a- B! Lupdate-local-reputation9 C. ^6 K' p# \, a. p( g! M; H
set trade-record-current lput([local-reputation] of myself) trade-record-current
2 M5 C" ^, m+ {* d5 {/ b]. i% T4 s" O3 J/ I
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% m: h- Z7 V  T7 F;;
将此次交易的记录加入到trade-record-one
0 e2 Y# D+ @# ]# x9 }set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 v+ M2 Y* Q6 c) V! h$ F+ E  @4 h5 Wlet note (item 2 trade-record-current )9 w3 e3 @+ a( s
set trade-record-current* J1 a# X: |8 H- [7 s
(replace-item 2 trade-record-current (item 3 trade-record-current))

0 U( Q( ~& Z/ c  y+ tset trade-record-current8 I4 Y4 w) x4 L9 w% ^8 _$ \
(replace-item 3 trade-record-current note)
; `3 p: G* f5 ]5 m, {0 |9 M  x8 y' k

+ `- A+ v+ _7 P0 B$ kask customer [. d. n: h7 k/ x% ]6 G: m3 ^
update-local-reputation
" ]- O: a# e, K& Gset trade-record-current  X; |' M! ?" m! X6 y/ a& a  r! i, U
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' T- M6 B/ r* g6 Y3 [, i+ S
]$ j1 ~0 x6 ]) J. m/ J  n

1 B2 X6 U) t3 ~  E- ]6 V

3 s* E$ d' d# _" Zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 w7 A+ T8 T; X. `; ~; e0 f$ f
# _( g" V: g! ]5 N
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 X; \* h: ~; K! S) a
;;
将此次交易的记录加入到customertrade-record-all
# Y# C/ g: g4 A: N4 c; dend& |5 a5 \' d1 Y( [6 }' k

" `6 J4 ^5 J( c- E: K7 Pto update-local-reputation7 W7 B5 q. D$ \3 ^7 d. l  F* q! w
set [trade-record-one-len] of myself length [trade-record-one] of myself. V, \" d5 v/ w" {" e/ a
: b; R( L/ o  D' h3 K+ [" [  I

$ E% C) P1 f# L9 [; q1 r; i;;if [trade-record-one-len] of myself > 3

* y: D) R6 ^+ i2 V! _( P+ A& Uupdate-neighbor-total
! y( O/ X' |6 Z  G, E;;
更新邻居节点的数目,在此进行
7 k$ }4 I+ P$ ^  Olet i 34 h: z! _, y8 M2 G; s$ e
let sum-time 0
3 [3 l) X+ y+ X/ h# S1 cwhile[i < [trade-record-one-len] of myself]
9 Z# j0 [  `' Y; @, K[7 b$ K. z; Q/ ?
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' g& R: N0 h. C! }/ S! ~set i
9 H$ N) P; {; K% J5 c) U( i + 1)

& ?8 t: k$ i0 g. j) ^& g]/ J/ [' x2 w  g5 a
let j 3
( G8 ]! S0 b) A# {5 wlet sum-money 0
- n. T' W% V! cwhile[j < [trade-record-one-len] of myself]* X8 o- ^; _2 u% n3 }, o. ^
[
2 G( T" r- |/ a3 cset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
. w! `* Q: m( g& V  }7 }set j2 {2 l7 K+ ^+ C) m( b0 R/ r
( j + 1)
6 m0 M" H8 J" w+ r
]: s( q) E: G  |
let k 37 L; U7 S/ K, J# y. l; x
let power 05 P, g% o2 }9 |4 U
let local 0$ x, _& f/ d: k# U
while [k <[trade-record-one-len] of myself]( E) [  l8 t/ S8 y8 L
[* I7 @' r( X/ s* B0 y
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) 7 B2 B8 A4 x+ L: o- L, A
set k (k + 1)$ X3 H/ W5 _7 b5 B
]
5 z6 J2 j; d. c6 }, Aset [local-reputation] of myself (local)
7 r& _( }3 s1 h8 j2 t! O& gend) X& t( p$ o* o7 \- s) W2 @
2 J7 f' ], p5 `
to update-neighbor-total
1 F# j3 N: t$ \/ V1 V& `. L0 G9 w1 |1 k1 ]) r  d7 E* H
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 e+ a  c7 V& {, y- e7 ^1 T4 {" X3 k  [# R: g' h8 E, J

2 l* w, c& i+ E/ [9 G' L8 aend0 s2 U. r( {! A& v* ~( v

, s% F* T7 E6 Lto update-credibility-ijl 6 h0 _% W  \8 q3 k

( j8 W! k9 T( z8 u5 y  Q1 k/ j;;
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。
: V% H+ X4 t6 c& f1 Olet l 05 l* e% O' @  {; i" R& m
while[ l < people ]
! U1 d% F: k' C% R3 [' [2 K;;
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6 |; N3 U! w) }, K) l, r
[
8 F9 |8 x) B$ B, Xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)( Z6 b8 W7 A, b
if (trade-record-one-j-l-len > 3)" `. g$ l& S8 E' O0 c( o2 v: Z
[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/ h" B; \' D/ L. h$ w" U/ w9 q
let i 3+ G& s5 [  [4 s, r4 k
let sum-time 0+ M  u8 w( y: Q% U" \+ h
while[i < trade-record-one-len]0 b6 v3 Z' d- v" R& G9 o( s
[# V' x* W$ }; w
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& e4 H8 _( @; q# v2 V7 sset i
- c0 n0 k8 ]6 _( B( i + 1)

! S9 J% N  v& s]
3 X. C- w( ~( l2 q4 \7 g: g0 s$ tlet credibility-i-j-l 0) }6 z: Y: R/ A" r) X4 s3 ?
;;i
评价(jjl的评价)( \  r5 l9 B5 G2 V, m- j
let j 32 n! p. P3 E; w" x: H7 B& A
let k 44 T4 q3 {# V# B) e
while[j < trade-record-one-len]% h7 T$ j  S: x2 g% K% d, X2 c
[
- d  u) g# ?0 H. |$ Rwhile [((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' p3 \2 B$ y9 v: E/ U& N
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)& D# e( n2 I; H8 x  Z
set j6 n% i4 X2 w3 G  O- k
( j + 1)
1 d7 W8 f" ^, @% @- Y' J9 v
]! G; D3 X& s+ S5 _$ R
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 ))
8 X& g1 C% j& m1 d4 G- W
. L. n7 w: ~+ T1 Z% c; c! z# [
' u% f9 Y7 J- B* s$ }
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# l; b7 R( b. {3 T;;
及时更新il的评价质量的评价- c  X2 w4 a( C, J1 n0 I9 T
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 b5 r5 J' L3 A/ Z8 q
set l (l + 1)
' d+ l+ Q1 s9 t& R9 w]/ T" `/ C& U! D& R
end
6 t. k1 p+ O1 b% A% q
7 n" a$ T) [0 b" kto update-credibility-list
& N+ Y" x# X- H0 _4 Xlet i 0
6 N- e- v; z9 S* s5 ]3 l& v- m9 h4 ywhile[i < people]
) T( B7 A  z$ b  t[+ c* n! v$ K# N" y4 H% ~% {
let j 0' K% d# X2 L% y# y
let note 0) c, K+ w" Z4 ^( P9 z
let k 0& f8 y" b* o8 X- S$ g+ g
;;
计作出过评价的邻居节点的数目* X5 p, t* [( w# d4 M
while[j < people]
% c0 Z2 ?9 g- k[) v! h* x% z) E: h
if (item j( [credibility] of turtle (i + 1)) != -1)8 K' b4 F  h% r' S$ A6 v
;;
判断是否给本turtle的评价质量做出过评价的节点
9 [. N$ q; O: m[set note (note + item j ([credibility]of turtle (i + 1)))
. }: A; O1 L: N7 P9 k# l9 v. X) j;;*(exp (-(people - 2)))/(people - 2))]

1 K9 ~; o( z8 Kset k (k + 1)
& F# Q& N# H4 }4 j9 {) `# Q], O& N- ]& V0 v9 O
set j (j + 1)- E6 F; f' ]( M6 U! D1 i# e
]0 q1 H8 ?# g  e. D& ]: v6 A
set note (note *(exp (- (1 / k)))/ k)4 F: u: `( E$ ^2 e& }; y& E' I
set credibility-list (replace-item i credibility-list note)
! V' t5 v5 K1 Zset i (i + 1)3 |- g- F2 V5 ?+ n; _5 X- ^
]
9 p+ m; |8 S' G0 L2 Y" Pend
' s: \. J: d" G; v9 w7 m$ D$ Y0 F! e, s- q4 p
to update-global-reputation-list1 w& w4 d7 N( k; m( _' _4 E- d( _
let j 02 D: D5 ~: K6 N
while[j < people]
* Q* J2 \9 I- H4 {0 Z3 o8 L: `; l[
! d* |* ]  A1 h) Z+ c0 {let new 0+ p9 D/ o1 u( g1 L. y0 H* ]( C
;;
暂存新的一个全局声誉" ]' @% L' G( a) V. N
let i 0
0 m% T1 X6 S) d* I! olet sum-money 0
& Z4 I5 W5 @& h0 K% s7 g3 l; b+ xlet credibility-money 0: ?: U& M4 F. j- O9 ^
while [i < people]
. M- t$ C$ p9 u. y, A( d[
5 N* [( E) G4 j; x, B7 S) Nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), T- @4 U% x: r/ w6 r& k7 Q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# W' D4 i: Y* [! W1 Z* Z7 i
set i (i + 1)2 ~( I$ H* f% N7 D) h
]
2 ?* s! F/ v. b3 L4 Ylet k 0
3 H; q4 N) B' i1 O6 ^& hlet new1 0# {# f, |7 D  h# y$ W
while [k < people]
0 E& P; z! t& [[, i5 B, B- |6 \
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)
- u# f# g" Y$ l' a% O' ^set k (k + 1)7 d; K( Q) {5 l9 ~/ J; Z
]
7 w% P' N0 l5 j) S4 z- `  Pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ Z# u* z3 N  y0 r) t: g& {4 A9 T$ X/ Tset global-reputation-list (replace-item j global-reputation-list new)
- M! A- E& d$ xset j (j + 1)
$ U' k: s! y. m$ ?2 X) I8 H]  B, z. ~5 E' q& ?. i3 K( Z) c$ y
end0 ?% O; L: z! N3 b! Q# F: S

( \5 E$ g8 e" e. G3 w# q$ k  _
! F" e5 U/ @6 C$ S/ E4 R* a! S6 G' k. @  K  N8 |  z4 w" _
to get-color; q- E& |1 f( r& D. h7 ?/ I# u: o
! u" T: G% A. Y! Q9 Z
set color blue
* k# X, Q1 `; K+ S* ?8 M
end
6 g! a6 x% l" r0 B. I6 O+ ?$ Z; v9 w: U2 j3 t# o  \2 {& W7 h9 r
to poll-class
* F2 \7 P. T3 A  T" U( n* Xend$ C9 V0 K3 D" y+ g+ }

' W) e& I! [3 r' b3 Sto setup-plot1
$ w: L+ W' e8 Q
0 g2 U% \" k- u7 L( Iset-current-plot "Trends-of-Local-reputation"
0 s2 ^+ U% m& `6 u# o
4 h& k, j/ ^8 v5 }
set-plot-x-range 0 xmax

# U% U$ o( V& \- I  v
" j3 Y2 K9 j" T3 E! m. _set-plot-y-range 0.0 ymax

" |. o+ N# Z& c, qend, t: w" f! w" ^' D3 h
6 [5 L) X0 r9 m7 ]2 U( }+ N) K) b$ U
to setup-plot2
- o/ D3 E, ?+ b' J
: R6 y8 p8 z9 W0 cset-current-plot "Trends-of-global-reputation"

; v: {) B, A$ O% G6 t
5 v7 Z+ v  W7 N0 [5 f! j$ _set-plot-x-range 0 xmax

9 a- c- y7 {8 J% E5 Z: u$ a3 x2 `6 N* W3 E+ f0 Q! W
set-plot-y-range 0.0 ymax

0 V( Y7 T+ j1 X' rend
4 \! d/ Y. t# G8 e5 X7 s2 Z% o% Y- [4 Z7 G% u8 I5 y" n3 F/ x
to setup-plot3
: ?1 u9 C( C/ w
7 C) I/ C" g( Q2 P4 r5 x5 L6 [set-current-plot "Trends-of-credibility"
  T% y& h( w- S% \4 V
+ ?; I+ Q% q0 B2 ^! s2 ~" t
set-plot-x-range 0 xmax

' f" D$ I. i& w8 R# k) u( M1 w/ y7 A4 i+ y* \
set-plot-y-range 0.0 ymax
- U  L  ~& t( S3 G7 S  G1 p; o
end
! x( i. \5 W" `( ]5 `7 X  P. t" \6 a# N4 P0 n, o7 j+ H
to do-plots
$ `) P/ a; U2 l$ J. W' M, oset-current-plot "Trends-of-Local-reputation"7 Z: _$ _9 z* g0 ~- Z& ^) A9 Z# D
set-current-plot-pen "Honest service", v" L( s8 v, ]& Y
end0 g2 [4 m. m" O7 p7 d6 ?% s' R
3 T) L/ B% B. d# |
[ 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.
6 `& o3 u; j& W* F. D% ~& O8 t; R% Q% W9 R$ I. H9 Y
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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