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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:( M" w' j0 }6 a) O3 Q- M8 x
to do-business
' \/ B# h; X* l- h6 f rt random 360
3 E0 b% k4 }7 R) c" c1 l0 r" B fd 1( ]+ j. O9 G6 w; F2 {0 K
ifelse(other turtles-here != nobody)[/ U, _; h$ C' h/ V5 P
   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 e  X: K, R, w
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 v9 P1 t/ a9 K2 p: N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 z2 x  i; f: x" A5 \: x% L
   set [trade-record-one-len] of self length [trade-record-one] of self- a4 s- R' ]5 b# [6 t1 l6 H0 m3 P
   set trade-record-current( list (timer) (random money-upper-limit))! s, ~% I% {. N/ T) X

: G; c( F# h- g6 Q. r1 z, F; ], T问题的提示如下:8 ]' v6 o+ b  I( D' r! B" {. V
# Z) l2 Q* W1 {6 Y4 H$ V. w1 @
error while turtle 50 running OF in procedure DO-BUSINESS
, c& q1 W; ?9 u" J8 o  called by procedure GO0 V2 b, l* |5 w
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
' @1 N9 D8 {  A$ u3 i8 `3 r
(halted running of go)
& k$ b/ `: X- W) O8 r! j
" y/ ~. ]( x+ b8 C7 D0 I) t$ X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~~
- @& m$ b' _& r2 J* B1 M8 f/ 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8 R0 k1 y+ u# ^2 e, W; X
globals[
' I$ j. V$ u, b, I6 x7 T. Uxmax
3 H* |. \: S! R0 O/ X: Z8 H& Oymax4 |- U9 w" g1 }* M- u9 u6 b. i. E
global-reputation-list
* t% [3 u+ A1 t- ?" t* N- N( U7 J: e* ?$ R) G% m" `
;;
每一个turtle的全局声誉都存在此LIST3 Z" Z6 b- X2 N3 e5 o: Q. d
credibility-list
* H5 @2 O0 R' k- u& i  W;;
每一个turtle的评价可信度
  J5 W5 }2 I- z, J- v2 F% Shonest-service
* G$ ?7 X+ A0 c$ A" B' qunhonest-service7 x3 M) o4 w, Y; y2 y6 W
oscillation5 E; n5 I' N. x. g
rand-dynamic
) R5 g& j8 D1 K]& b: |. P& M0 I9 W  E
$ s) G" x4 Z8 \, h+ i
turtles-own[
/ `. A; y9 C5 Q) W; p- Btrade-record-all
8 z0 ]0 j  _" B; m2 [;;a list of lists,
trade-record-one组成
" U) j8 v- J7 g( Y4 ?trade-record-one
4 G3 Q- F- L  K; g$ q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' p" V. M  I+ z7 I9 l0 t9 D
2 E7 G' \& p- k) E( e# 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]]$ o' B" S) ]. M. w8 g6 Z: c: R, d
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]% w) T6 d" I: }
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list2 q  A# b* m1 r
neighbor-total: u. X- d8 z' G" V
;;
记录该turtle的邻居节点的数目
  ^' f  a0 ^! itrade-time2 a7 J6 `: ~" C" _3 _2 S4 @
;;
当前发生交易的turtle的交易时间
0 f% n+ C% W9 Uappraise-give
1 d4 p5 t" E0 p;;
当前发生交易时给出的评价
- ]& @+ Q1 ~& jappraise-receive+ y' L) |  P7 }9 @0 k& V. B
;;
当前发生交易时收到的评价
( U" |9 D0 X, i9 U' Qappraise-time% s1 H9 l+ Z$ b; x# U
;;
当前发生交易时的评价时间, z6 ~0 s% ]0 @# ~
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ x) Y+ u( l. Z7 _trade-times-total
& C7 m8 T! n  i# `  E;;
与当前turtle的交易总次数
6 Z) |2 L  ]$ _$ d9 w( X1 @trade-money-total- d5 y$ M! Q5 e4 H% j
;;
与当前turtle的交易总金额9 V1 S& a5 L" i: j: ^9 u* v
local-reputation8 z1 _7 s. r. y5 H0 u- J
global-reputation+ V- B; H. `2 J/ R# R, v9 r: ~0 d
credibility- |' V$ A' w& U! W$ k# f1 @( E: u
;;
评价可信度,每次交易后都需要更新
* z* P6 |, b1 Ycredibility-all; S; @: f: E  Y
;;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. c! F/ ^5 @4 ^0 S/ x

/ p. a" D% c# F; X4 u* [. }5 w;;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% M$ _' {) _% h1 D5 W6 i% \
credibility-one
: @! P. r, c  q- J6 N; ^* l;;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
% Q- t/ k. q1 X# ~global-proportion5 ]- M" ?6 n  l! {8 J' Q* g% \
customer# N2 ?6 R! q. l' C3 q5 O/ @
customer-no- O5 @9 G9 r0 K
trust-ok
  B5 `1 U$ G. Z$ a" n5 B8 ]. M5 utrade-record-one-len;;trade-record-one的长度9 H' Y( U3 f/ ^
]
2 z" F/ m/ @; X9 C1 C
4 u3 _) I8 M/ h# u$ i% n;;setup procedure
2 @1 K" I7 s- _9 n  y2 N" ^* K- C$ u5 K3 G4 ~
to setup/ E/ ]6 V4 d" c& v/ G5 S/ B

! U4 }5 m% y+ Bca
( ?# L. {  b: E- E( o* v

) P* w9 i) H3 A. W6 [initialize-settings
9 y' d- C3 y3 i+ u: H
, ~- C6 e. d5 M- V1 ~  p8 t% Q) ^
crt people [setup-turtles]

6 A- v7 N" u$ k2 A  [4 D
$ i* q- A! K+ y6 k6 }! x* preset-timer

& R$ |" T! c! p( t
) [' J( F- M$ u, Jpoll-class
5 e& [( G# z+ I

$ b% I! n$ v/ L3 F/ ^setup-plots

6 e( K# E5 {* u: O( O# x! n% d9 R/ C
do-plots

# K" C7 \6 R# H8 C" Qend
* t9 F, y3 }$ P" s0 v
2 X4 M' e4 Z6 R( i" f' Dto initialize-settings
& q5 r4 `7 ^4 ?1 p
  N2 g( A* r% x+ Q, |" xset global-reputation-list []
: X* v2 C& I6 t0 v* o! L: d- N

+ O, O4 D# I+ ^6 c% }set credibility-list n-values people [0.5]

: i  V/ X7 W! U8 J6 W# p. E# t2 F2 P  l, C3 W& C- ^' n
set honest-service 0
; v6 l& C: t8 L  n% _* ]% p

  ^/ X& ?" y: t2 n3 xset unhonest-service 0
) {, R+ k4 c$ E( X3 Y. e( H. z

4 V2 L8 Z( Y6 fset oscillation 0
5 k* |7 Q, a! _
+ P0 d9 b7 p' \- z5 ~0 o- t* \
set rand-dynamic 0
3 d  H5 Q6 E( o) E+ S; N
end
& U" R0 B+ v2 }* f) @
' |4 ]3 x& j7 O  h/ {  e: i% i) Xto setup-turtles
2 a7 i* A5 s. e: `# xset shape "person"' y& u& ~# U8 Z+ B$ F  }
setxy random-xcor random-ycor2 W& C+ ^" z9 C9 T; Y
set trade-record-one []* [0 P+ d/ |1 M; \3 A6 \" P3 q" m

9 x! A3 z# d& `+ Z, N% Mset trade-record-all n-values people [(list (? + 1) 0 0)] & T8 o( k. V) N3 F( v; ^8 f
0 K' T  _2 E/ R0 @* @0 f* x7 R2 r. O
set trade-record-current []" t/ `% t) t2 a5 R" A+ ^4 K
set credibility-receive []
" N8 B& H  @4 C, f/ b6 c( I/ [set local-reputation 0.5& ]/ _3 D9 f% _/ n, v% z, F
set neighbor-total 0
  W! a' w* w2 U* F% M  x- Jset trade-times-total 0" }# C: J* S  l" L: g
set trade-money-total 0" i# a9 A/ V2 B/ B9 C1 Y; `
set customer nobody  h, Q3 O& U' a" P' R
set credibility-all n-values people [creat-credibility]
! j  L; \# k3 b7 Y2 E1 Pset credibility n-values people [-1]
* A) O+ n6 A8 s9 U. Lget-color
" k1 X3 C* |! |$ C  R. e

* k, y% ^& b9 _3 S* mend* D# V* Z& A( x/ D

& r; k( p% C- _( Xto-report creat-credibility! n) T3 Q& }4 ]8 Q% U0 `
report n-values people [0.5]
5 X- e# `% T& F' {' b0 gend
9 |/ b" O3 G" A$ i; K' k  ~  i9 B2 f) B  A; u4 l. I8 q  C# g
to setup-plots
) p5 L5 J+ {. j  u9 f7 k" C! ?! @- ?. a% U) @9 [
set xmax 30

1 U+ y- B+ ]$ f. z# l% C4 z6 N) l; @7 i0 k! G9 V2 \
set ymax 1.0
1 a% e  \4 ?6 n4 \' R
1 ?- |/ M4 ~; X) k5 D' J- o
clear-all-plots

; r$ e' b6 J6 V! G
1 @+ f! _5 U8 Z9 C% usetup-plot1

+ i& \, d  O' B# M; G/ o
$ z, o$ F4 h0 M3 `+ o1 _setup-plot2
" [% p9 j4 @4 Q0 d% ]
  U  V7 z6 B" y
setup-plot3
3 e- u" A" ~; J$ S- V
end
, _/ k. e- e% n. \1 @/ ^2 F0 q; p; X8 E
;;run time procedures. Q3 w/ p" [- ]1 a
% p( B1 k3 k5 k4 R
to go
+ q- O, j2 [' E# ^0 G$ r9 X, t" d( l1 a3 i, H: D% H
ask turtles [do-business]
; d8 i0 G  p& R8 C) m
end
: Z/ X9 |( O: M5 W7 d8 L0 \) [# j8 I4 u5 d: g
to do-business
3 X  M- G4 X7 K: x; a# W
, ~2 D) `, l8 s
, a! v$ X, B5 V1 }  O
rt random 360
, b6 o, X8 x3 a' j

1 t8 Q; |* k3 E8 `' I9 wfd 1

9 h  r. k6 R9 E1 i8 S
4 ^6 @' [: K( |. Kifelse(other turtles-here != nobody)[

. L$ p3 L9 o) _. \- G8 A8 d' a4 }0 b3 V4 S. |) |; w
set customer one-of other turtles-here

9 G* E  b- F9 s6 o) q: @$ c1 z2 \( w  k$ x% s5 `$ d6 R6 m% u
;; set [customer] of customer myself

: i! M  {" u" u0 v0 L  o! R6 q8 a% o8 G4 Z! S* m4 b
set [trade-record-one] of self item (([who] of customer) - 1); z8 B% d4 p/ |; g2 \
[trade-record-all]of self" O# i" [8 w3 l; R$ L) F
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 x2 d; s5 B: x, t7 f' z7 S
2 v; f6 F- c; ?
set [trade-record-one] of customer item (([who] of self) - 1)
2 U/ P5 Z! K: W3 l[trade-record-all]of customer
1 P* Z+ j& m/ M& B* [: g2 R

( b4 s" Z- _4 t: Yset [trade-record-one-len] of self length [trade-record-one] of self
- s: p: r+ f. N/ n9 \' Y
# i9 I3 |3 }0 m2 ?: ]4 c  _) `
set trade-record-current( list (timer) (random money-upper-limit))

1 g7 {8 K: q4 f* o. L* Q! e/ o* a8 T5 ?7 l) g+ ]% {4 T' r
ask self [do-trust]' _9 o2 }: F- K0 }& |7 O; Q
;;
先求ij的信任度
2 {+ T  Z% v( {, g! I+ {6 s: ~
2 ^( Z9 L: T1 c/ z6 w" cif ([trust-ok] of self)& B+ Y# I4 C8 p( S- W
;;
根据ij的信任度来决定是否与j进行交易[" u8 l3 p6 |6 |( B
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# p. H6 M/ L/ z. _/ e5 w

3 H$ b+ t8 G$ m[

3 X4 Q. D/ y" o9 s# n, J3 t0 J6 w# [7 E3 _# V% B
do-trade
+ c0 t4 v- A) e6 |( i6 j7 _3 i

  j: V8 C& L4 qupdate-credibility-ijl

  B' s% {7 E5 J& {: B) u
& m8 v: l3 E2 ]update-credibility-list1 V  y, A1 L5 f. r  _

3 {5 g( g7 X8 p. E4 A9 L: T8 X5 p) O7 V( s, P4 F
update-global-reputation-list

5 m. b" z4 E4 R, C5 m
0 M% a4 z9 k5 P: {poll-class
" S9 v4 [3 h# \2 s  `

* ~: j# E5 l; x, l9 xget-color

" u9 T. o& k$ Z; Q4 _
7 T# O/ f% c/ H# O7 v6 M]]8 W3 ?0 f% a# O; c$ x) p6 {

+ \, H5 F) R' x7 `6 h3 _! W* s;;
如果所得的信任度满足条件,则进行交易! f, B9 E( i/ A# {. B, d
6 u4 C: o9 H' M+ b
[

& b0 {# S5 }' ?$ x, u! n' [- R+ @; M" |3 t6 `2 Y- g* G1 B! C6 _
rt random 360
6 z8 X! ~1 h4 E# F
1 G6 g- o' J  a/ L
fd 1
* w  F' y- h7 S  O; T
1 z* r6 D" c* r% q
]
* x& Z& s! O2 l" V
3 [4 o! }$ D+ R5 q7 v% l
end

& U/ r8 X3 f( M2 W" R! [# y9 Y  t) C/ W. T- L: X6 u  |
to do-trust
1 F2 K2 S0 W6 x& Yset trust-ok False
! Z( S' r* b, c4 M. r& D+ t1 [, _
* ^4 _3 F/ m" ^/ t

8 L$ ^4 M) ^; s# N; T7 E3 o: wlet max-trade-times 0
- j% z0 R8 O2 {# m8 I/ Uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% a, _) {$ z$ K. c. U$ \let max-trade-money 0. s) d* x% d+ m9 p6 C
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 |$ x" f; t; N" m; h. @7 ]
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& y& X: d$ t  q' I) A! k
6 R4 }% D' }) M) O2 V
* W! V1 K  Y. ^" M" S4 ]" ^% s' B
get-global-proportion
( Z0 w9 m2 y% [- q. m1 L: @let trust-value9 @2 M. w6 J' g% _& M5 T
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)

+ [) }# p8 L0 t- Gif(trust-value > trade-trust-value)5 w( M6 M  x8 U. ^
[set trust-ok true]
! L! I6 M% |. O  p+ Oend
2 r5 U; I+ H+ e
: W2 O3 Q  s- @0 F1 K$ v$ J! lto get-global-proportion8 M8 C& x! X2 d1 G0 \: K
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ ~% H5 A% |, J/ M! p[set global-proportion 0]# s/ A7 a5 o3 k
[let i 0
, X% y; e7 ]% m9 A$ p% clet sum-money 0
; x, b# w: U1 q5 M! a- i0 u$ Qwhile[ i < people]
3 S  M$ J2 E! K: `9 O$ c[4 Y* T! h6 o( M6 X
if( length (item i( S! N8 Z7 Q: n( j# `3 N
[trade-record-all] of customer) > 3 )

" U  ?+ V: l$ _4 H[
7 R" f0 X) e! a8 ^" nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 }( O2 S8 t3 e7 s% z. W& [, n; T( i
]
8 O* T7 t0 Y, x( x3 \9 Z]
  W: r* D' v, {5 M$ r" Hlet j 0
: [0 M$ b( C& U% ~& j3 ?$ Qlet note 02 r' P9 G# t3 U( o2 ]" }8 X6 S1 q
while[ j < people]  \4 L% \/ Q3 j3 j
[
4 ]+ q; I# k6 C, p, `" N- e! Kif( length (item i
2 e7 W& c# U$ I7 E3 d: X[trade-record-all] of customer) > 3 )
# l7 K# n& U1 J
[
( ]2 A( l4 r( W/ _7 Q+ iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 }$ V! w+ [- @5 r0 K9 ~* w[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 Q1 P9 r% ]" k; ]9 U+ j+ q! J
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, k* {' A7 [" ?  u  m- C* L% x]+ \* ]. X) }! L1 s
]/ d! P4 E3 d. C
set global-proportion note9 u4 u- }) X" V$ H4 N  e% o2 Y! o- l
]
: k. r$ b) }6 U6 O5 b# Jend
# ~4 n% L! Z& T5 q6 o; _
2 W6 ?+ P, [$ v" r* m& ?7 S* Zto do-trade
2 d0 K; @) R9 L( _;;
这个过程实际上是给双方作出评价的过程2 e& s1 S7 B9 s: G. W2 D  U4 x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 w% Q# Z3 ^% Y/ _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  x' d( I( y  [# E+ d# h0 sset trade-record-current lput(timer) trade-record-current+ c6 ~/ @% p% u6 b) D  S* p
;;
评价时间! ]) S  `6 H. e
ask myself [
( E0 o4 @/ h# _7 V: G0 C: n" Dupdate-local-reputation
0 B( c) {) ]( n3 H+ vset trade-record-current lput([local-reputation] of myself) trade-record-current( A, m/ N* E, j6 ]6 h+ [
]
% S7 h9 \' N3 x2 ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; N5 a( I2 Q% K* h5 @& P
;;
将此次交易的记录加入到trade-record-one
& k+ K- U! p" M8 ?4 ^8 i5 _set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" P# y! Z  E! W- p' y/ V" ~let note (item 2 trade-record-current )& ?/ j. w# @$ i! t% c' j
set trade-record-current
. f7 T% q1 ]9 H1 m: V0 q* H(replace-item 2 trade-record-current (item 3 trade-record-current))
# d6 S8 K1 d5 j+ G; K
set trade-record-current
2 {9 X7 w0 A1 N9 ](replace-item 3 trade-record-current note)7 ]9 k6 T. u- |. ^) ]; f6 S

, z  p1 t( m9 p0 t9 K

0 |4 d' G" \5 p( mask customer [
1 g2 U4 d' d- @% ]( P; g9 }3 Dupdate-local-reputation- s) f$ K# n; ?4 ?
set trade-record-current: p, W1 s! ?3 w
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 N8 i! w& A/ |" Z- l/ ?2 t
]- j/ m" I$ x* f' ~# M
, |: g9 B" O- [- ?7 z& e" A0 l
, Y6 ?9 k2 C+ n' b4 t& x9 M+ c) s; [
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ f1 R7 A6 i  y- h+ s, \( W

7 m$ r" `6 g9 q# [set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( E; A( ]- v# ^' Q& \, x4 g( c4 z;;
将此次交易的记录加入到customertrade-record-all8 g1 u* C% i* t! d3 ?
end
/ O8 m( |# |( t* c) o- W+ q& c7 }4 h* W3 }8 ?/ ]( @
to update-local-reputation: a) ~2 c! Q- y& G. n# c
set [trade-record-one-len] of myself length [trade-record-one] of myself
' x9 F( V( B& ?$ L3 O5 ~
: c9 f2 B$ {/ O, p) f( _5 @
- H" Y/ u* g" f1 r( i. T;;if [trade-record-one-len] of myself > 3

3 e3 h! h# ]; u9 p3 G7 fupdate-neighbor-total: j/ }0 i. D& i2 ~- V, J# t, p
;;
更新邻居节点的数目,在此进行
6 c/ n7 G% Z3 R0 flet i 3  q% C+ ?! I$ o; j, r
let sum-time 0
9 i; _$ K! V; ewhile[i < [trade-record-one-len] of myself], r: _$ N$ b9 q; q: C4 b& M
[4 {  ]5 I$ O9 p2 q; [; i
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" a. M7 S- z2 M$ a* {. y) bset i
2 E$ ^: @, X' `5 [9 b& D( i + 1)

( J' D& B( N. o8 z+ v% {/ [8 k]  C5 c) Y- Z* j% ?8 x
let j 3
8 V. l2 ?0 O) J( g, Y# p4 j% elet sum-money 0$ z* B# k8 `: ]0 p$ ?7 K
while[j < [trade-record-one-len] of myself]8 O$ d5 `  D! z1 Q6 D
[6 R* s: Y# D) S: b. Y' b3 q$ N
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)7 a  y% o* z6 x/ k
set j" v0 \0 l6 W$ C* ^4 y" m8 f2 l
( j + 1)
$ ^4 s5 w  G7 H
]9 h2 j3 W! M% l, ^' h" u
let k 3
+ G# M8 Y) Y! A/ Z) j# Z0 `% Llet power 01 ?8 J# H7 G6 R
let local 0
4 K. A* a' t6 m3 mwhile [k <[trade-record-one-len] of myself]2 l% o8 s: `4 {: U
[
+ Q0 f% v& q0 k6 v+ Bset 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)
% y6 V; R. j$ O2 k7 `9 fset k (k + 1)
9 @0 P$ L. ]- E" v]/ @3 y% M1 ^+ }9 I( X
set [local-reputation] of myself (local)3 e* P9 ?8 A; x& b1 _8 n( T
end
; @/ X) C6 O* {" ?6 H7 f2 k1 @
to update-neighbor-total  G1 a0 L* m4 p. c
- U0 p7 l% F* Z
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 O7 ^$ v) K7 N. N) H1 g
, `1 p! M! S4 C( T
  t- ^0 l  ?4 m( b: \! _! T8 \
end1 W7 ^. {$ n) L

) _2 u, o$ n7 w0 F# i6 k  Dto update-credibility-ijl
% W- a- y" C: `: l+ n: q8 d# \
/ B2 R* c8 N4 A6 l6 Z;;
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 S- s! E& C) W; `let l 05 V; t! x" t' W! M* ^& g
while[ l < people ]; q' i7 t% O6 l- ?7 b4 [% w7 a
;;
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 t" ?' f, v6 M; Q1 a
[+ o1 @' U+ O' Z, ]. [2 @( l8 T2 a2 U
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)! x% Y* W# P0 k) q0 i
if (trade-record-one-j-l-len > 3)  o, f# [& J) z: }1 t' t" 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
% v) S  n3 D* x. l7 S8 q; z; m1 Klet i 38 k" R1 {  ~7 u- ]% [: b
let sum-time 0
4 W1 |3 \% n. G" \, X( awhile[i < trade-record-one-len]
$ ~% s! n% j# u[
( @9 Y* |1 ^& K9 V1 p" Eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 N0 ~" {  Y: [) u) g& O1 S
set i
5 [  a: N  g" E* f! l" C* t( i + 1)

" m/ D5 T3 j0 i) i$ u; J4 T$ o5 n1 Z]$ ]4 v) @6 j- W" M
let credibility-i-j-l 09 b9 [% ]+ {/ `' y& j2 d3 W
;;i
评价(jjl的评价)
, |" ?* |& e8 `/ G2 b' ~  Zlet j 3
' \9 R" ^  b6 b$ @let k 4
; G: j4 F7 H' `while[j < trade-record-one-len]
. _# b8 x: V6 N, Z[
, g& u9 q1 X& 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
6 V  c1 D$ z' v7 gset 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)
2 X& f: N9 g; Fset j
/ p) M. N6 u4 s+ E' b( j + 1)

" X* K, U9 i+ I) q+ W/ y]
1 q. f1 ]! y9 P5 ^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 ))1 T, w9 l4 W# F

  I; L* b$ ]: o$ \

) j! P+ q( C8 J. [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ C* H# d  A% X8 u" ~
;;
及时更新il的评价质量的评价
! d3 J' ^) p2 u, }, Eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' P- [! K5 E! d7 k, gset l (l + 1)
# |1 ]- `% d% P# [2 R: u, f]
5 M# L5 a* c; W: w' Cend& L8 P# R! v8 C% [$ U

7 O7 Y* U. i7 u. n* b3 xto update-credibility-list' H; D& h5 d/ I' |+ n  H( \
let i 0! r  Q# A+ J1 T( U  U
while[i < people]% q! V$ m- j7 B0 `+ ]
[
" ]2 m( Q$ x- I  E2 ]8 [7 ^let j 0
: X- Y6 ?9 S0 z& C0 ?! q( `let note 0: I% ?2 W  }8 [* m% S
let k 0
$ f" d+ Z1 C* E2 v: |6 E;;
计作出过评价的邻居节点的数目. [' Z2 W; ~6 M
while[j < people]
( w( T; V1 r5 {, V: i: q[
1 B, q: j# @4 q: l$ |if (item j( [credibility] of turtle (i + 1)) != -1)
' U4 ?6 i8 _! b, r1 ?' e, b7 A;;
判断是否给本turtle的评价质量做出过评价的节点
: }& {; N8 Z% ~[set note (note + item j ([credibility]of turtle (i + 1)))
# q& q% D( Z8 `7 [. r;;*(exp (-(people - 2)))/(people - 2))]

  g# u" T3 E9 T/ Oset k (k + 1): t* t4 G/ ~4 c& K) X6 \  }- I
]
! u/ j5 x5 \% Mset j (j + 1)
& `' h, x2 _, K& @8 x. z]' \! q- D( d5 t# S
set note (note *(exp (- (1 / k)))/ k)
( d' ]. T0 G- `' B8 xset credibility-list (replace-item i credibility-list note)8 W: d. R7 m& j" H. F
set i (i + 1)
( F9 `7 y* M2 R# n]/ p9 `& `& F7 v4 T) l* Q
end. w1 @; S8 |9 P4 ?4 `

6 p1 s% \/ Y- N9 P; ]to update-global-reputation-list
' r  U, Y- L/ W7 R0 Jlet j 0
: ]- r  _8 i" }% S( g; |& jwhile[j < people]7 n* ?7 e4 S. g
[- E" e4 P2 H% @2 O
let new 0
0 v/ o8 }9 @1 }4 Y( `& A;;
暂存新的一个全局声誉- ?* p3 M7 N, k) K) G1 l8 L6 c" e! K
let i 04 o: g6 P$ z1 {" i3 x- ~# v
let sum-money 0
2 C1 E6 X  U% e/ p3 E" ]let credibility-money 0
% z, E/ e/ \# m8 h! B+ y$ R3 Zwhile [i < people]# B" W7 N% w+ X2 Z4 k9 _
[, z9 z$ |% ]$ x6 k: ]- j0 F  _
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ H6 n- s4 x# e; ]0 Uset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): }* c9 k7 x/ l7 y
set i (i + 1)
' u; G6 k, N- M$ _]
' E% `5 B+ ~) t/ }6 P: tlet k 0& V( \, E8 e" @' B+ ?8 G
let new1 0
1 Q- l# K: H9 r! t. vwhile [k < people]4 {$ Z/ R& d0 V5 z2 _
[
  y; J9 ]9 X/ Z+ r, rset 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)
  X- u, ~' U' a+ @4 o3 @5 Zset k (k + 1)
5 |7 c3 A7 l$ p  ]]# C6 E6 N" ~7 s7 h
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 O+ N+ b7 ^( J2 ^) Uset global-reputation-list (replace-item j global-reputation-list new)# Q! Y1 k# f) S8 B8 v: K
set j (j + 1)
. j6 i- h, N0 ?6 v' R# l% z$ m  Q/ `]
2 V& C- @6 G6 xend
3 }* T! |' d/ c; O2 j# ^7 N. E1 w* J1 X" Q

6 W3 k5 n' {4 V7 Z5 M
+ I4 P5 m2 _( j# a6 u" Vto get-color8 ?3 |6 U  F( h. D0 m3 C1 b3 G/ q

5 A6 O. P7 S+ U. g% fset color blue

3 @  u, _( P7 W$ d3 @end
$ \# w5 D8 U/ f6 A: N$ V! e9 j" J( G
to poll-class* \# x, [1 v2 n& G
end9 g6 l. b& C$ y$ a
  Q$ @- y( A( s2 @3 q% p
to setup-plot1
5 ?; d  R7 y/ A7 {4 P. q0 t& x/ D8 h4 P+ y2 p0 W
set-current-plot "Trends-of-Local-reputation"

/ E* c8 ]" R/ b: y) N. A: @( W
& o/ Y7 _8 H. S  Xset-plot-x-range 0 xmax
; x% w, B' V% F1 {0 R
; I# r3 ^) P! \- b* T6 e
set-plot-y-range 0.0 ymax

9 v) w/ }' i) `. h" ~3 g5 ^end/ I! g+ ^. T5 o. I$ h

( A; ]: c2 }# ?; o; r9 P" Zto setup-plot2
- L) {. t1 O0 Z0 n& Q* ?) Y+ e- F  |7 ?5 G% P# r* W
set-current-plot "Trends-of-global-reputation"
" U) M, y6 Z. O1 v  y
& I0 ]. d! [" @, B  [$ N6 I
set-plot-x-range 0 xmax

0 q+ r& _/ E: I) \9 f9 A7 `+ t8 k5 p5 O2 |* b
set-plot-y-range 0.0 ymax
' A7 a2 G3 p4 g# F* B" N
end
$ r% ~( G2 M( b# d" p5 x+ M9 f$ a* m" Y$ y+ l# P3 c
to setup-plot38 G/ H- F. k6 X, t" ~7 O! g5 U/ k

- j( t: N, l" kset-current-plot "Trends-of-credibility"

! U  N/ x& R1 ]0 h. `0 M! r' A, H! M* Z3 g( R& v: v8 v! B
set-plot-x-range 0 xmax

  N, H- B7 z5 I3 L3 I5 {  h: y
% y, `4 b+ O  V$ J! bset-plot-y-range 0.0 ymax

! o& k1 t7 U% E2 [end$ J7 j$ G1 K) K2 J
2 Z/ Y* u  i" `
to do-plots- |1 M; ]7 e$ |7 S' N
set-current-plot "Trends-of-Local-reputation"
; v2 t2 R. c/ w0 S0 }0 kset-current-plot-pen "Honest service"# k% ]- h+ K7 j' J
end
' Q% M% c1 r: i
4 [8 S. I% G9 Q[ 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.
0 r, X' @/ P- h& i! V( G9 v& U; ?) 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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