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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:" a  n5 e, o9 u+ ~! b$ M; V
to do-business
( q3 _4 P+ G6 p% n" J4 O) q rt random 360
: v0 O3 x7 N* x! J fd 1
! Q. `) P9 |+ `( c ifelse(other turtles-here != nobody)[
5 t+ o9 W+ H& ?" ?8 y3 v8 N   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.
  r5 t7 \2 l# h8 b! m" ^+ A   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- T3 Z  `% x$ \% M1 P8 W' o   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' M0 ^; S$ v" v. {8 k  w
   set [trade-record-one-len] of self length [trade-record-one] of self
0 r# ~8 H/ t7 y2 v   set trade-record-current( list (timer) (random money-upper-limit))
  u; v. L$ f4 |5 n1 g
0 Y5 I4 v' D/ Y0 F问题的提示如下:
: p* `7 H" h7 o8 \. L: M4 N6 E; n# T6 [
error while turtle 50 running OF in procedure DO-BUSINESS7 P' X, a: X7 B) O
  called by procedure GO
% ?& S" H. g4 lOF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 _/ X! J7 P5 E
(halted running of go)# [  m0 i( B% a4 d! _/ b: Z; e
% T* k" B$ g! u( Y8 h9 L
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~~
' a( f, L2 q* H/ F# R4 _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
/ ?% ~! ^9 S+ iglobals[6 |2 J. Y! b0 t2 C2 Z
xmax, }) v) N8 e! g) `
ymax
+ [! [' ~' G  G) ]4 E  e5 ]$ ^global-reputation-list
& T* E7 H) g; C3 c
5 X" ?' z0 ?5 w- R- ?; S2 j;;
每一个turtle的全局声誉都存在此LIST  [- n5 e# T+ N5 R/ i; Y& f/ g. w
credibility-list/ \2 N6 V( _0 T$ h; O+ h- u* y5 C/ n
;;
每一个turtle的评价可信度
# X5 [) |2 E& S" Dhonest-service5 d& ?& C/ v0 p% J
unhonest-service- m% ~4 H5 e+ q  W, E2 }
oscillation
( n, D# E+ m+ g7 lrand-dynamic; `6 s& ?* q* Y  r( F4 Q
]$ j1 ]1 H2 |9 D- R' D4 j8 S
6 a- n9 Z  N- V% O- W: M  K' f
turtles-own[
; c/ x4 z# Q/ a5 Q4 |9 J6 ~, z9 dtrade-record-all$ e; s/ \' J2 P  L
;;a list of lists,
trade-record-one组成/ R4 m3 {$ z( f( T7 f, }
trade-record-one
1 t* ~+ C3 y6 ?! x0 r2 {! V;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" v$ F# i  m$ u9 ~
( c# w2 }+ e; _! l
;;[
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]]* o: B- M( u1 N0 f/ {: ~
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]
. i& ]4 v! x: d: Icredibility-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
, M+ I0 G6 f+ J% z+ E6 ?neighbor-total% P& J; f) N- ]( c# ^* v- G; q
;;
记录该turtle的邻居节点的数目
3 d% f/ G+ ~$ d, b- M8 B1 Ltrade-time
  D$ s5 T2 ^/ ]5 X5 C;;
当前发生交易的turtle的交易时间
" m2 R& m5 M- p/ P! o- w) rappraise-give
1 }, k) ~8 }. p;;
当前发生交易时给出的评价
( N8 p7 O+ u7 X7 N. v0 happraise-receive
* _1 m  F" ?8 u! `5 ?. K2 W7 C* ];;
当前发生交易时收到的评价
6 ]) P1 {9 r: [: qappraise-time6 Z" E+ c. d; F& t
;;
当前发生交易时的评价时间
/ r/ U4 U' q- ^: m# y5 X7 slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉- |7 r% W3 D, U4 b8 T
trade-times-total, ~8 u7 P& O7 w1 [
;;
与当前turtle的交易总次数$ I- f( h) G/ s' K4 C+ H) w' F- @- l  b
trade-money-total
; i; q, |1 ?* `1 i9 i. ?2 S;;
与当前turtle的交易总金额. m: f# a9 l, `
local-reputation. d, G. |5 G% [
global-reputation$ i: C6 s" {2 G
credibility8 o. n$ j4 b3 n3 V: C
;;
评价可信度,每次交易后都需要更新: V# r; z6 P" Y( ]! J2 `  E
credibility-all
( B8 o" H! V0 R;;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- ?. Z5 J: \+ s
5 A$ W% X8 b) m; Y2 N;;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
* n. m! F' @) C+ t0 J0 m3 ncredibility-one
/ x4 C1 s/ {8 y2 ~;;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
3 Q# T* d9 C' x2 Zglobal-proportion
/ _, h3 V" a6 G' z- n8 u" Pcustomer8 T3 d: A, ]0 B4 n+ {
customer-no
; r. t/ N" i8 t. K" Strust-ok& u8 B% i! w5 q/ _0 |, M4 E% e
trade-record-one-len;;trade-record-one的长度" ]) h# j  `* W. V  u) m3 J
]# ^7 r9 F; a% P# N+ s" z7 S# Y
! q+ k) m3 L) z0 A& v
;;setup procedure- H0 s5 G! u4 E: f

$ z4 m; L8 e; W9 Z' hto setup
' j( V! t+ h0 L/ p3 o/ o* X# M+ s) J) r
ca
7 F; h" y( p, Z& b- |2 @. k

7 u2 C5 M' }8 D: c. c" x- D$ ?initialize-settings

! c6 Y( v: }8 U. ?5 }* W2 Q7 X  `9 A8 n% u# e! B
crt people [setup-turtles]

* h9 D: [2 j( s
3 @2 K9 W8 }0 K) xreset-timer
& ^5 N1 m* ~1 H2 |: p

: I% i7 s0 M/ Z0 E$ O" C  |8 r- d8 zpoll-class
6 D# C0 [; t) \/ D3 @4 O3 i

  i* o% N6 o' s; Usetup-plots
+ K3 ?$ q0 F1 D9 I
$ u/ u: F! }. U7 Y, v9 m2 l' r
do-plots
, V% i2 K4 T4 k' U6 {3 q# }$ f9 I
end$ W6 I: d  R( @1 m
& D! G! M7 U$ R3 e7 P( k
to initialize-settings
# A8 ^9 @; l, K* i# a( a
- R! d4 q  A6 Xset global-reputation-list []

9 D. K! y! a* J5 r$ _8 d* J. V+ m, H- y1 I
set credibility-list n-values people [0.5]

7 y7 u/ B9 u. J  L( Q1 \; i, k, ?5 A
set honest-service 0

2 c1 t5 y& n2 ?$ X/ K. H' w* p3 P! H
4 h1 A* z6 b6 T# n! E# Pset unhonest-service 0

8 e  {6 j! M- R6 `; ~. `* ^5 x! u1 [. N& W$ J' l) |
set oscillation 0
( e0 }$ j5 y# o0 B
+ d+ D! Q/ R- L6 h3 i% @/ L
set rand-dynamic 0

% T, g: f9 E- v' M% Z# h; ~0 G! ^8 Vend
; g  r7 s: T2 b0 T
4 g: q0 ^3 |9 B' kto setup-turtles 7 ?9 P% ?' ^$ A& C( [
set shape "person"8 a) R, N5 f  |8 _
setxy random-xcor random-ycor
2 D: t3 s( N, e0 h: f6 D0 ?set trade-record-one []# P  D, l' H; P' O+ Q7 \* i
8 l! D5 `8 f4 @
set trade-record-all n-values people [(list (? + 1) 0 0)]
8 i6 K2 ]4 a9 R2 N8 P. w

6 e. q. P9 `% ~9 K' L! u$ j6 jset trade-record-current []
0 i2 D. Y7 ]8 |4 i9 o7 F5 ~set credibility-receive []
) ^, D8 @' ]/ F# F3 X1 ]* l2 Vset local-reputation 0.5
* ^5 q. s  E4 D$ y* mset neighbor-total 0
2 r1 b, C& m% X' m6 w7 a' R, B' X' [set trade-times-total 0
% L2 h. k8 Z8 ^7 rset trade-money-total 0
7 x$ X& y* q, U* V% k# s& Z7 Sset customer nobody
, M, W7 y# O) [6 k7 E7 {. n+ E! zset credibility-all n-values people [creat-credibility]
# F3 e# i7 T( Tset credibility n-values people [-1]
( c3 j0 r; o( J2 X8 o3 b; }8 pget-color
- g1 p6 Y% W7 E

: C7 e( Y" c5 U6 |+ b& Zend
/ {* [# i: {# X$ R
7 j- j; [# `* _& p/ D1 kto-report creat-credibility
* ^. f9 P7 @8 Jreport n-values people [0.5]
& t( }) S3 g( O# h4 v. M$ {; Wend3 g' u! c& j' X; o% a

& `& `( T+ U3 ~to setup-plots$ A' }! G7 {8 r0 o$ W; ?# ^. a6 Y4 Z1 m
, J* q+ `6 Z( m- e
set xmax 30
& u6 s- y3 S; q8 _) ^/ |

2 U; k/ m* c1 y- K% |  i3 O2 cset ymax 1.0

" R: `+ u. Q% ?& S
6 [3 l8 W; ^! @5 G& A" F3 {& t& oclear-all-plots
; T4 Y: V1 N0 s3 J0 H9 x/ ^; D; [

4 h5 O; @3 T9 u3 L4 |" p0 g% q7 M+ rsetup-plot1
  G6 V0 p* j) |1 o5 Q1 H! U

; h9 U9 p- U& z; hsetup-plot2
, A+ F4 v8 m- _# Q1 N
* T2 w# r: p4 A6 X# _5 V+ `% `
setup-plot3

8 k  i4 O" b( H( O7 u" m, Z% bend
/ u- C  A- y# c4 X# ?$ P. Y% I4 ^* L8 K: R( [1 D3 y
;;run time procedures
& r7 W) H9 c# f7 ]. H' P& `$ j4 r. t" i" a! z3 h" _
to go
+ p6 J" L- S; s; r) D2 X9 T/ ~, a/ ~+ z+ Z$ u
ask turtles [do-business]

+ F% H& Y% P6 E# k$ w7 Tend  X, t3 R6 ]% {* ?& l

$ |0 O6 r; M6 g2 h0 k1 X- v! oto do-business 1 H- R! i: w9 F: a/ m4 @

4 B* P7 {/ G* R9 A0 G- x; N, \! B
" A1 I3 O1 H  Z1 j# f. vrt random 360

' v( F$ d, ~9 O9 m! v0 r; X8 G: e2 B, f5 ~- F# x/ U7 T8 t! E
fd 1
! X" y& P. y: g6 K

5 D! N9 z9 }* V+ U0 g9 y5 |. X  @% Qifelse(other turtles-here != nobody)[

0 O: D: b2 c( \" |
$ T" d- j( z3 w! t* dset customer one-of other turtles-here

+ i5 c- e" X1 e) V- p
, d; N. i: e# p' p0 k/ r;; set [customer] of customer myself

: [) M' }) o  f- E' G, r: f, u+ E  M) I* S' H2 J+ p, J; R3 T5 e# O
set [trade-record-one] of self item (([who] of customer) - 1)+ ~( t7 `6 ?4 g  s
[trade-record-all]of self5 }$ |$ v: M: W5 }* I4 W
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" a" e! A# n: ]: V& S- a9 q0 O3 @3 O. Y; H
set [trade-record-one] of customer item (([who] of self) - 1)' W9 H+ |" d7 l0 \1 H# b
[trade-record-all]of customer
9 E8 T2 H* C# y) C- Z

+ D6 Q5 f; a- y/ V# bset [trade-record-one-len] of self length [trade-record-one] of self
6 I5 I* v. T  I: w

+ y/ @& X, D  i; Y" l  }set trade-record-current( list (timer) (random money-upper-limit))

% |2 b4 g5 e  w" @* k
+ }( n- x# T$ z9 V' ]5 p. W1 Zask self [do-trust]
( a$ G8 v- p" u* n1 X- y' ?;;
先求ij的信任度
% W# u6 z" L, b- y5 D1 O$ J* A/ A% ]8 q2 P7 x7 E+ w4 Z2 |2 D
if ([trust-ok] of self)! ~8 I, O7 A* T* l9 W0 d
;;
根据ij的信任度来决定是否与j进行交易[
& a8 K3 P) r- k( Y; N( Oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ j: m9 W3 V% R% j
9 H* x( a" ~/ n4 Q[

1 u; u8 K6 X0 S" ~0 a
0 Q* m# Z: V  f2 R2 E" {- p  y1 n8 tdo-trade

' A  x) |6 _3 ?7 @% n6 n2 Y6 Z7 E
update-credibility-ijl
/ F( j1 g5 x- `3 q/ n; y  A8 d

+ k  Y3 a4 R# Kupdate-credibility-list/ f1 d- b: V" n
( N  p$ ?: Z2 r+ z1 ]

. `! I& {" n* G) N, B  S+ Y' Dupdate-global-reputation-list

/ E- J0 c; X% a. ?  k
5 n4 o$ v4 T- e0 ~  u! hpoll-class

3 t7 ]! P. v/ d+ U1 v0 r- [& m0 [9 [$ S, [! ]
get-color

- z/ [! m9 e& A& }1 p& J+ R: L: X, U6 S# |( R& R4 ~* `7 D
]]0 l: T/ @4 u3 |4 [
& L6 v1 I, Y, Q# q3 O
;;
如果所得的信任度满足条件,则进行交易- P: F, `8 l- `3 n4 M3 S4 q5 h& @3 p
' {) O- J) ~# L; o0 W7 Q
[
5 Q* u; g% x' g
1 c8 e' `  U) X3 B# R" g' r
rt random 360
3 r: Q. r. ^/ ^1 g) P; w. M' @

6 |. \: m- H: {  A) r9 d# E& J6 cfd 1
. e9 _: w3 v) a- B+ }* x

* B; N2 x( g. `. B]

1 @5 N6 K" ]4 \+ a7 i
" M- Q% Y' Y; v/ `2 vend
- A7 A# L% g, w1 ^, F% u+ I- C
% \) q5 ~& q0 _
to do-trust
% @8 o% f: G0 z* u( qset trust-ok False
: b  F+ j3 E; D: W8 o& S* L; ?8 {: x* w& G# {6 |8 ?: n
. j# @( B5 H+ J; [
let max-trade-times 0
% O- ~" s- Z( \: _foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]  K; W+ Q8 C3 q' _  [
let max-trade-money 0
# p' G5 g# b9 T+ V; I6 p6 Nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& D3 x! [1 w9 }6 u& ?
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ r3 ?% I- g' f" c* L: O* c" N0 M
( X( Y8 C0 {4 i2 K8 B$ `

  b, Z2 G9 m  [% m: c& t8 A( y' vget-global-proportion# \/ g2 |6 `# r8 x  W" m. q
let trust-value
+ j8 S* u1 I' l) d5 Hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" _! [% T& f, ?; o
if(trust-value > trade-trust-value)& X! S- G2 Q9 {1 y
[set trust-ok true]$ K) g5 W) u: n7 e
end
- D) n1 O  p7 K: j) O: [- M3 H
. _: V1 b4 {% N- S+ f5 E* l/ M: g* p1 Ato get-global-proportion5 m# f2 v4 I- E* }8 q' D1 k) Z
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 h9 T) A% I5 V# [+ K$ X5 g
[set global-proportion 0]
2 }6 m2 ?- F7 G! {# V( U' e5 n[let i 0
5 f; F4 ?# q. ^" y; V, Blet sum-money 0
7 q& w( I  k3 u; P+ ^/ x% A4 h1 Dwhile[ i < people]
! J2 A9 q1 W* b4 i5 b, W[; e/ F- y7 `1 P7 R; w
if( length (item i2 s' s5 |/ G7 j
[trade-record-all] of customer) > 3 )
% R$ ?9 H. L- q/ F+ I; G6 L
[9 f! _- g( q) x0 J# ]* h% ]9 ~
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 D6 x/ _4 y" I" K0 b2 v]
. F! a" B  l- a! N+ v9 ~! Y]: l2 H* k/ @/ o4 T0 {6 L
let j 0
8 E1 E% S& U8 ]; _( W, ?let note 0, v/ m+ A! X0 ~! a* a) i
while[ j < people]7 e7 d" f7 O$ c% W6 h" W4 c
[& X* z- D5 ~) V$ X' w
if( length (item i
! U, t: q& Y+ l, B: Y# E) h( X[trade-record-all] of customer) > 3 )
$ d! p5 l( ]9 o0 }  m0 g9 w9 M
[$ Q5 {: `2 C2 [
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 a( F1 Y1 N4 T* |& L$ B4 q3 n
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; I+ h; x' s. @1 l
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 [% Q$ Q, S7 j/ j9 w: q]* C  A% k5 f: c& v3 s
]& k+ z# o) L  D: ^0 ^4 y0 E+ M
set global-proportion note
  x( ^  ~. K/ ]1 ?, o]
: F& d  w0 F/ f3 P) H  B2 Uend8 i0 Q. ?7 E+ ~2 @$ i; x# U
) p  @3 E* Y2 o. e' o! a
to do-trade4 i, ]# x" u# Y
;;
这个过程实际上是给双方作出评价的过程! K# T: G0 z- j* C7 ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, s' C: w1 b# ~2 w2 H1 R9 l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( M1 e6 Q& B: Q5 u* C* P
set trade-record-current lput(timer) trade-record-current) y# d( K/ @1 m0 ^) x
;;
评价时间
& r2 C* s2 w' H, rask myself [. Q6 d$ |; a/ F% `
update-local-reputation4 ?9 B1 N/ {% `# C. Z# L1 ]
set trade-record-current lput([local-reputation] of myself) trade-record-current
. Z( L  f' l( u]
8 a  W) M) W- U, ?set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( [& p* e# W) o) U1 l2 p5 e% ], U;;
将此次交易的记录加入到trade-record-one1 b, W, G* O0 ^- J
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 w% y) X' T5 ~
let note (item 2 trade-record-current )1 r; _) `7 p: P* f0 A5 Z, C0 z5 x
set trade-record-current" S& M- r5 t9 }5 z
(replace-item 2 trade-record-current (item 3 trade-record-current))

. ?$ R4 f! ?* s+ Fset trade-record-current- b: Z: H$ i/ M3 Z& |! m3 Z
(replace-item 3 trade-record-current note)
9 ~" C* f  W8 h1 z1 U. h3 [
' g. v3 ]$ a8 R0 ?& ^/ Q

* O% K; u0 c/ y/ p) [  a7 ?ask customer [* |& ~  x/ s# a' q
update-local-reputation
, Q  G, q  g9 [6 X4 Fset trade-record-current
! l+ |: z# A' o. i(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 F, N, f9 `) ]]
1 A3 _/ w7 Z/ v7 u0 F" c1 N- I, G5 i6 b6 q# Y1 N, E
2 h' X; f" F0 x# H( x* o
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. x2 O: ]  T; P" P. t

8 B& i# d) _. N  y. ]7 i' fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 W$ [  R' [* P1 g5 o0 w* [) V; M;;
将此次交易的记录加入到customertrade-record-all2 x9 J$ t9 X3 Y. [3 t) _' w
end
1 @' s+ f( J) l- I$ P! i' r6 V, A: ^/ i
to update-local-reputation
  ~0 v/ u+ \3 e% K) q- Yset [trade-record-one-len] of myself length [trade-record-one] of myself" k# k& C1 {: i2 y1 j

& `- q$ b  e1 c5 E5 y$ v# S( {! g
;;if [trade-record-one-len] of myself > 3

' n" D0 ~6 H4 S1 jupdate-neighbor-total
: \8 y9 v( }0 S3 K2 \9 P8 j1 p4 S& b;;
更新邻居节点的数目,在此进行4 L1 w8 Y8 F& u7 J
let i 3
0 i1 U2 F, H, n% rlet sum-time 0
* c6 ~, R  F% q6 d- O4 kwhile[i < [trade-record-one-len] of myself]& u& K% m  ]  U% B8 o7 B, D+ B
[
. e2 [: q: g2 g  |- N9 mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 c' t9 N  T' X% T
set i
; [& U- Q# H1 q& y5 a( i + 1)

: g, g5 f" L; ~$ G# @2 W]5 J8 [& d1 w3 i
let j 3. D3 @* ]1 Z- f# D
let sum-money 04 ]0 J! |. y; M, {
while[j < [trade-record-one-len] of myself]
5 V' y4 f6 Q% o0 {/ H$ M' D' l[
4 H" @; `/ g. ~1 e$ z/ aset 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# X6 [- C) P- o* \
set j0 V1 h1 h3 \; c# Q) C; u% T
( j + 1)
/ ^/ j) p  ?9 O) v
]4 [$ d1 B$ Q  Y+ X. @4 I( O
let k 38 ^2 n2 d- `% t+ y" a
let power 0
, }( E( H0 h" s. t0 Elet local 0
  S0 Y5 M7 x( I2 Y% qwhile [k <[trade-record-one-len] of myself]
4 D( U, {4 w5 G- t7 V# Q( |4 E, a4 B[
' `& \5 R' p& v* d, M0 \" cset 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)
, T% l% B! Y# ^4 k$ ?6 q; Iset k (k + 1)' [/ z3 H% j& n. m
]7 n/ Y! J2 n. b4 T) P2 L
set [local-reputation] of myself (local)
8 e5 b9 N$ C  X% p8 ~5 {! Cend+ m3 {6 A" S% t* ^" Q. ?0 `! y, i

, E* U4 V" @# ]7 _to update-neighbor-total
& @1 C: E- z8 R- v# A/ ~, m1 r! U9 y0 g2 P9 F  h) x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ d' ]8 d! Z: [0 X+ l; _- d5 Y5 G+ O1 v8 \6 m3 `

4 I9 m2 u, ~8 ]( @( i0 b( K& O% Oend
. _. Q4 e/ e$ \$ i% ?' Y% k8 }$ t
to update-credibility-ijl
+ z2 f# y9 I  @" V7 N; ?$ ]0 I1 g% k7 n' Z8 ^. }
;;
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。, X8 i( \/ A9 h: \: y5 m6 }
let l 0( o3 z9 \" |! {3 ?9 l
while[ l < people ]
/ i! `: P( P/ z, [;;
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* G6 Q+ a: I- i) g6 P/ z( V2 }9 `
[
' n& e( T, I  i; tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 q/ K# `& T6 V" n" W" c3 y* C2 gif (trade-record-one-j-l-len > 3)
- X$ g2 @* _+ d" y0 D: O[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' L; G# P- S& ~% L3 s
let i 3& X$ J: w% o8 S" X
let sum-time 0
* P4 R; p  q2 vwhile[i < trade-record-one-len]& y3 Z; ~7 ]* ?: |1 z# [
[! G/ Z. j1 `7 P4 T" Q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ U9 A6 ?: r- Z, C# \( _set i3 h2 H4 |; {8 c! z9 V6 ]
( i + 1)
' `" Z1 E$ G, J8 |
]
  @% _( {1 k& ]4 C$ qlet credibility-i-j-l 0
% N% T% X  A% z0 x$ W6 j0 A  P;;i
评价(jjl的评价)
) c* e% u& c/ W8 Slet j 37 N" f/ t: l  M7 m$ f" [
let k 43 A4 m" {( G4 {2 J, ^
while[j < trade-record-one-len]  Q0 O8 y# a# u$ [, m( L
[
% r' s0 z2 N: Q  ~7 h. B5 C  g5 O* Hwhile [((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# A3 f5 U" r% c% l
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)
; p, p; g; [* D/ H8 @3 S4 Kset j
+ L5 R  B  h4 }) x9 e( j + 1)

# i! V( t! S4 I# P1 a7 g7 U6 d]) k  m8 O+ I5 v& l6 Q' ?
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 ))" _  }) k. x% U$ e/ V0 m9 f

$ }8 ~  Z! ^# L9 M

! `1 [; N$ }( Q5 Y5 z0 @: Blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). W& j6 S9 @- _; J2 q: \- f" T
;;
及时更新il的评价质量的评价
* ^2 F! {7 y' i  O. v2 xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 k# m, }. c! c/ ~8 I
set l (l + 1)+ u- y+ F, T$ K/ X5 [5 e9 f
]
5 G9 d1 A3 \) \+ vend
, |( G: X' ]. X0 @
7 ?; t7 q. c3 q8 `$ E3 oto update-credibility-list0 W" |' b0 T6 W1 {' x
let i 0) D% H- k& @0 _. O+ R
while[i < people]
# J5 D8 k( m2 n0 J4 {9 d7 ~[" X1 S- k& J! T1 s& H* u" P
let j 0
, a: f  q% s' Flet note 0
+ I7 V6 A) w0 u# x0 h3 I1 tlet k 0; ?/ w* ~! V2 {7 Q- w( c% ]
;;
计作出过评价的邻居节点的数目( ]9 x5 }) Q1 |( ~. n3 g
while[j < people]- \# d$ p! c' N. @
[
" K; j* I( i8 aif (item j( [credibility] of turtle (i + 1)) != -1)2 v) A  r; p0 E* w1 K1 @: I9 H
;;
判断是否给本turtle的评价质量做出过评价的节点6 z" n( Q7 z) N. o
[set note (note + item j ([credibility]of turtle (i + 1)))$ K0 Z$ R* X- m& J& b
;;*(exp (-(people - 2)))/(people - 2))]
$ ?  ~4 J1 T0 ]4 _1 V! [
set k (k + 1). Y: x' w0 L$ V6 Z
]
; m& O; J# h( y  S$ h% mset j (j + 1)
$ k) {3 N4 K5 _4 U]
- R1 a1 L' {6 a; J* i# e. E3 Vset note (note *(exp (- (1 / k)))/ k)
2 g. I' F# m8 A+ D- p* Pset credibility-list (replace-item i credibility-list note). z- n* K" f; _6 D
set i (i + 1)
* m6 N! R7 W5 r2 h$ [0 \2 h]
$ k  l- T8 W" D$ y5 B* Pend4 O) G% |2 J7 f$ @: w5 X, e0 C

3 u# d  Q$ J- q4 v0 A( s& b" b7 \to update-global-reputation-list
& M9 A; I5 O+ k$ l& o; ?& T7 f$ ulet j 0
, u/ z& b& Y/ B$ }8 q" Nwhile[j < people]7 m/ a5 u3 e! @% `' t6 I0 L
[
3 g( t! w) a; i$ Ulet new 0
. l6 m$ a: F# F( G) j8 L- D;;
暂存新的一个全局声誉
4 p, `! X# f4 |# f  g: B% glet i 0
+ z1 N# E3 M1 v* r; h1 Mlet sum-money 0
  N4 e( m& [% J4 A$ h4 Dlet credibility-money 0
% e/ c2 Y$ k/ j0 w1 Awhile [i < people]
* Y  h4 _. d5 H, J[
* z) n9 b  z$ N% S* [set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ v3 b6 m, _) |9 l7 rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) g9 ~, o. N% |* p+ s8 {5 }
set i (i + 1)
4 f7 e4 T& X6 g7 m3 B. m]
9 g! y: Y7 Y" r0 slet k 0
7 ^6 f6 ?0 G" r0 L7 Hlet new1 0" Q/ l6 v; n; H" d2 ]! q4 j
while [k < people]( Q' I, E7 X+ i5 o9 ^
[" g, v- J% D1 W  P0 A3 \
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)7 r& K, Y! k8 B* F1 k9 I8 d
set k (k + 1)
: ?( p9 a/ B  H1 |' r7 G]/ h9 K- U, `! O
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 @6 c, m0 W& q( O4 O2 R- M. ]/ I
set global-reputation-list (replace-item j global-reputation-list new)
* l, u: m. c& I7 Vset j (j + 1)
7 M- Z0 n3 T, [9 I( ?$ a+ `]
. v4 e* ]4 p( W1 {end7 \7 G0 ~( ~4 n) c
+ k* j7 v+ Z  `$ }) q6 w

6 O* ?$ Z1 X. l9 G  N4 @8 o+ U- X  j7 S6 n8 X5 V
to get-color
" U. B3 b- Y) k+ E4 n0 n- L6 ?1 M8 K2 M$ {% T
set color blue

0 q8 j3 }0 `" F  D* Q! Q4 Eend
8 @& a9 B, P/ Q1 h- v6 `  T$ Q5 r* {5 o1 W/ K7 w. [7 C
to poll-class8 y6 N- d1 O# \; ?+ t2 u
end" A) M/ E  ^, J: `# e

6 W1 z- Y/ P+ Q6 Kto setup-plot1  P0 ~' [$ K, A

' [6 W* O+ x) O# M, g; F! Fset-current-plot "Trends-of-Local-reputation"
9 ]9 u1 n$ O1 {3 A( o. V9 M

) ~. \+ I- C0 ]: Dset-plot-x-range 0 xmax

8 g. r6 h" L0 G# ~% c+ R2 l# a, |( C: B. G
set-plot-y-range 0.0 ymax
3 \8 D5 `2 d9 {
end$ Z' E5 V4 C" u7 Z/ g" V: ~9 l
! K6 Q& \6 F7 B
to setup-plot2
! }9 p7 Z8 r$ R: }# ?0 m8 U$ V, w! U
set-current-plot "Trends-of-global-reputation"
: I. _7 X" K8 E: R# z% G1 Z

% e- ]' `4 r2 c9 y' j2 jset-plot-x-range 0 xmax

& Y8 l7 G" t7 r- P* g0 E" p- Y! o+ ~9 l/ c
set-plot-y-range 0.0 ymax

! s$ x' S$ {4 f; d0 ^end" h% @# C, c# G& |

# m9 w5 a& x* a$ h) \  h5 k: y8 q* O; ?to setup-plot30 P1 K+ Y1 G# ?* B* ~  z4 @
( y! e% e& E+ w& @7 l
set-current-plot "Trends-of-credibility"
7 C; K) S4 t+ J) W3 h+ R% u
1 X! b% l# S$ L$ W
set-plot-x-range 0 xmax
, Z$ [- ]5 H4 j+ |1 g) C* U
! M7 j4 |& Q: S' K
set-plot-y-range 0.0 ymax

; Q" ^3 x4 j" {: d. p( Jend
1 R0 ~6 M. x- n( s* p' W4 c- b7 `9 I8 Z- S2 Q
to do-plots7 X4 [  m, O' _+ s5 l4 }& g/ _5 b
set-current-plot "Trends-of-Local-reputation"
9 l" Y5 q7 t. Pset-current-plot-pen "Honest service"
" E# H3 @3 O- I1 P' yend
1 m$ t7 A1 I* Z' @& {* H8 W4 C0 [2 d$ a3 `& S% I9 ?
[ 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.
, S& F; O4 v+ B7 |6 D8 L& Q2 M7 q( s$ w
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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