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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:
, [  w' r9 e0 Z( uto do-business & X/ w3 b4 x2 \
rt random 360% v. b% {7 W7 G& z% n
fd 13 g# k+ Q" @7 ?# }
ifelse(other turtles-here != nobody)[. Z$ A! `- |8 g: g
   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.$ x4 x+ [  q6 ^/ u
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - T4 ~3 [+ Z% X/ f' c
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# D6 T7 g. d9 y4 T   set [trade-record-one-len] of self length [trade-record-one] of self
0 r# C- e( s! U9 _" J  _' ?   set trade-record-current( list (timer) (random money-upper-limit))
) e+ B2 m4 w9 d; v  y0 e6 W1 }: u/ j3 `6 H8 L
问题的提示如下:: b# z4 H# N7 f: F- A0 x6 o# l

. W0 w' z4 s3 rerror while turtle 50 running OF in procedure DO-BUSINESS0 T' A( v+ H# S
  called by procedure GO: E2 @6 q1 Q/ J6 J' L7 s
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ x9 s4 I' {* K# A
(halted running of go)* F) i$ v/ R' W) ~/ z- f7 ^

6 s  X& o  W+ g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~~
9 ~3 t1 k) o: e5 H6 k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 v  S9 @) Y, D) e$ C7 j
globals[  q& r: J/ c9 p2 \9 }5 U" y' Q# l2 J
xmax" h) j+ C# S6 l" z( ^
ymax
, h% {3 A' R! x, n, d4 bglobal-reputation-list
# T! n  {! m* B
0 N) g# O8 e5 b# L8 O7 i$ i;;
每一个turtle的全局声誉都存在此LIST$ G- \6 w! e1 C5 q1 t% Z, a
credibility-list2 T) r/ h% U1 s
;;
每一个turtle的评价可信度; C0 j8 `: l  c6 v
honest-service
/ }4 o1 @# H# ~% C, G8 ~2 ~unhonest-service
5 P/ [2 ?* Q" N7 ooscillation6 H5 H( ^, B7 p. P6 q' V3 _
rand-dynamic
$ ^( e: V$ Y7 ~]
& t* H! c4 C  K- _" Z8 u/ B9 a" d7 I1 ?
turtles-own[
+ W' t3 |( f+ C, G8 T4 {trade-record-all! n# b% |- O; L9 W0 q1 }7 [  L
;;a list of lists,
trade-record-one组成5 T& u: d2 v9 m8 N  n
trade-record-one% A5 P: \: S' `. [* i
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 M. c3 Q9 C6 h( q
& A' _) a2 P+ X, ]1 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]]
$ \6 \1 G# o3 m* k; B$ x' Z% ]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]
+ p0 w3 v) [# G; T! v9 p# x/ `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list3 l7 u' d1 |5 |
neighbor-total- z! Q% d; i9 g) V: z/ Z" l- A: {
;;
记录该turtle的邻居节点的数目
) @  Y( l2 j9 \1 |2 Atrade-time
0 n6 ~- L/ ]% {+ N: l! ?9 j+ A3 \;;
当前发生交易的turtle的交易时间
2 L% V/ ^0 _& w9 z# e8 N- Z* M1 qappraise-give8 k+ n5 O. m8 i) X4 z
;;
当前发生交易时给出的评价! X& W& y) ^0 G+ u6 Q
appraise-receive7 `% O  S$ a# x, D  |
;;
当前发生交易时收到的评价
2 q. A7 }) r: {. d' R" uappraise-time4 W- W  n' M$ |# R
;;
当前发生交易时的评价时间' `- Z( N9 W" z  o/ w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: d+ J' ?9 _( ]/ u; i# otrade-times-total
+ J: R7 P7 `/ [6 W;;
与当前turtle的交易总次数. [- l& u) I5 h% j) V" O
trade-money-total3 ?8 J$ R- ~* w  a% ?! h/ n  x+ K
;;
与当前turtle的交易总金额/ W; f5 r4 ]3 d( c/ U9 l
local-reputation
1 g# U# }* E! |/ s& Hglobal-reputation
6 t% p! j+ Y: T' kcredibility
7 h4 z$ ?2 a7 |' i1 O$ X2 t;;
评价可信度,每次交易后都需要更新! y% V) \! a% a2 m8 p8 v
credibility-all
  E! O0 y& W& p/ c9 h, V1 {9 z! N4 t;;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
" F/ o& a( R: K; U+ X4 w8 n( }9 n' Y, e
;;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
  D4 }! n1 t! Q8 @! @credibility-one
' @7 d2 l& g/ D" O0 p8 d! Z;;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
) N8 [2 ~  K; x1 wglobal-proportion+ T! H; H1 e3 z8 }+ G' n
customer
" g" S& p# O2 v% A0 B7 i# O0 p8 k& acustomer-no5 o: I# l9 e. ]) n9 P
trust-ok( k- z* S5 i; R/ Z
trade-record-one-len;;trade-record-one的长度# F1 u* {4 L! L1 r# z. q
]6 \$ A5 c8 a- k/ A6 C
, F$ v: @2 R7 Y. e
;;setup procedure( Q7 c0 p( k% B1 v
8 K6 c& p% p: Y5 p' }( i' c
to setup& m. c0 G& P0 ]* D$ r, y

, x$ y1 I6 ^; a' r  [ca
* y# T% x/ T  `$ r1 `
* a+ J$ A. h8 W8 `# k
initialize-settings
, x+ v2 L- L: ^& |+ `% V, d
1 _/ J+ `$ t8 A& v* t: X
crt people [setup-turtles]

) K: a* n% B0 R3 g# f& V" O( b) h( |. u; A1 `1 U$ G
reset-timer
8 x6 |( {' A; z0 O# i2 Z
" o8 k  I. j* ^) k9 c" V  P- z: O. p! B
poll-class

6 f: g, t- e8 p3 y' B) R) ~5 }; o) j4 V! e% j# b9 g
setup-plots
4 u& A% f+ ?8 y. F, @

* Y' x, c6 |3 Q( y+ h+ ?. D8 Ldo-plots

9 y( r6 \6 E- x0 i$ O9 |7 n9 [0 Nend
: Y" E$ w$ f7 N% R$ v
4 ^9 `9 `3 V  I: @, pto initialize-settings
0 q$ x5 b1 D; B/ b" d) D4 k/ L5 v- O4 o
set global-reputation-list []

  L4 y! O7 j7 q7 a
9 y$ l8 D' d( P- {/ Vset credibility-list n-values people [0.5]

$ ^& K: F1 h; ^, k* M! ~( c. K0 L/ H' B) V7 t+ T2 t
set honest-service 0
5 {) k9 e+ U+ a5 `) o1 _
7 p1 C. n$ o* Q6 z: E
set unhonest-service 0
4 e. b2 F, U! Z8 n0 d

7 y$ O8 d8 L  I! Q9 @, s4 g4 fset oscillation 0

5 e, g! d- p% W/ S1 O; o
; {# ]; J8 w- t+ Q/ t2 Nset rand-dynamic 0
3 l" m. y( {& Z
end
) V& Y! b! V6 s5 _" a) c4 x5 w( c) _( h$ Z4 O' o
to setup-turtles
* Z  T' h2 E( s1 q7 Z# Cset shape "person"4 z' {3 T2 j9 [& t& b& D/ E6 H% C0 y
setxy random-xcor random-ycor
, u% v4 x0 a4 R6 Pset trade-record-one []! q& q* F: ^8 z) e+ Z7 C; s6 I

% _* g( X3 F# H1 {  Oset trade-record-all n-values people [(list (? + 1) 0 0)] " L8 T' z/ g1 f) W. ^# c* z; v( L9 `
# v3 _- c3 d  t/ f' Z
set trade-record-current []
4 V% [2 K, I0 jset credibility-receive []: I4 D7 x" X# j2 i  [7 o  r' {" y' l
set local-reputation 0.5
/ E" x+ }$ Q( Mset neighbor-total 0$ x" x: H1 u0 S% Y
set trade-times-total 0( K! ]* B% u( X
set trade-money-total 0' g. {+ k1 b" I2 T% h' w1 ~
set customer nobody) h% x- s9 @5 G! m* Q# p
set credibility-all n-values people [creat-credibility]! @1 G3 i4 h0 V( [' g) A  d- g
set credibility n-values people [-1]
- k0 w/ H" [, P. nget-color
( ]# V* n5 J1 u3 w1 w$ f

7 M) N1 j# Y1 d$ l) e+ L) [end, t  A3 W: X) D  ^* r- t4 V
$ H9 a; \( R1 h
to-report creat-credibility
7 B5 t7 F4 H7 m1 c* Q: Qreport n-values people [0.5]3 S/ S2 T! L; a" I0 d& E
end. N8 W+ _. Y8 d& Z' m9 w

7 k8 L& K- H/ {( `to setup-plots
5 L! G  D$ T9 S' i1 B( j
0 U7 s6 @, o3 u! |# m$ c+ g/ K6 k3 zset xmax 30

( {7 {& y: }0 E3 m7 J+ B( m) S& k( c
set ymax 1.0
* I1 ], e2 {; z: A% t, [
8 ?/ J. k, F8 \
clear-all-plots
0 ~; @, D" g( O0 H

7 f% g9 R* j( `8 lsetup-plot1

( l8 r9 D1 f! u1 B
6 y+ @' l$ Y+ [setup-plot2

7 l7 i1 |) l& C. ~: F3 y
7 r. E. s: }; V9 l/ @setup-plot3
; v( k4 b' Q  Q6 b3 K: _
end7 P) y3 \  k! j' P

9 `% U8 l2 y7 R* G3 B8 w;;run time procedures, w4 g. ^3 X3 |( f$ c

4 g9 `" y, R! ]6 b: g& U: t0 dto go" T8 a! r3 [: O" |7 n( C

! H. }- [7 D4 ~8 Uask turtles [do-business]
, I0 K" U, Z! X; l
end
7 s1 N! f) a* c- t) T8 v& M$ A9 U5 u  A$ J9 D/ L
to do-business / C" |( f/ E. r: D* R. c9 R, H6 k

: q5 w1 e2 x$ [( I( Z; J
, p2 ?# k4 r, y* K: a; _rt random 360

3 L, Z, P9 k; `1 a- A* l
, x. [! D; e+ {$ p9 Kfd 1
# O* O- Q, x$ K9 F  v; B1 j

0 l1 E( L+ R8 U  c4 G3 r3 N1 pifelse(other turtles-here != nobody)[
) Y/ X# ~4 k6 U* Y, C$ b$ U' i
0 F  Z: ?* a* \# N8 }* z0 N
set customer one-of other turtles-here

# B$ r: J6 ?5 f" O- J5 n+ i4 D
" ^" X0 e; p7 w: ];; set [customer] of customer myself

( U/ E8 ^+ m, _. d- X' X
! u7 s" H4 n% U2 mset [trade-record-one] of self item (([who] of customer) - 1)8 C  [; a. E8 X
[trade-record-all]of self2 j  A5 w$ P. T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 h1 ^/ q* i! ~$ u) G" F
1 l* B" N8 Y: B  d, D& ?( h
set [trade-record-one] of customer item (([who] of self) - 1)5 u# L4 M6 w2 ]3 l) D$ v9 v
[trade-record-all]of customer
# ]& Q) E1 p, E
$ r+ v- o9 g2 t" D) m: O: U
set [trade-record-one-len] of self length [trade-record-one] of self
5 o, j3 R) A% j" O7 i$ u

: e$ k. M- W% {, cset trade-record-current( list (timer) (random money-upper-limit))

" i! L8 i4 i  s7 _( {- q
8 r4 ~2 M- e. A4 t3 vask self [do-trust]& \/ s- o" C2 j
;;
先求ij的信任度
3 G5 q( Y' Y# m+ X7 p  y
. B" u! `. ~3 h1 Q' X! ^1 j; Jif ([trust-ok] of self)
( k( M: m1 S) |/ I* G. W;;
根据ij的信任度来决定是否与j进行交易[
( q4 J0 i3 k+ S- k+ D2 B) Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 F- I  O) `* Q2 R+ f" m. \$ [0 D
) e! u$ A4 C4 q8 C$ \6 G9 m[
' e9 C5 B7 d2 B0 X" _1 h5 w

; H' Q: R+ J( Rdo-trade
4 e; ]$ X9 X8 b* K( d

% c1 \/ j! l9 ]" Lupdate-credibility-ijl
- A) g1 ^9 \& {* h3 C+ V% U( ^
. P3 ^3 \' `0 L& q) M. `4 i
update-credibility-list
8 a4 r6 _% z6 M( N2 @3 a6 X8 M2 V

2 T; f4 s( r" V$ h, \! b% u0 a5 `# I4 x( b2 K7 k, x
update-global-reputation-list

8 W% Y2 P' V4 b5 u2 w/ K  ?9 O  \. [1 d5 c
poll-class
. `9 Z4 U* M% X& l8 m$ b2 V" o
- }, j3 V, S  U
get-color

* q; V# Q' I" E5 t6 g1 e2 m3 z2 Z! u. I9 ~8 f
]]
( {# M$ W. I$ T, k( E& |: r1 X: J3 Z( s! w" X0 t/ [$ Q
;;
如果所得的信任度满足条件,则进行交易2 U5 t) y4 B5 r7 ?/ r) L0 \" ^
# e2 h! g6 n9 `5 s. C% L
[
. C6 Q  M1 F  _

  m  Z6 _% |, ^. Q* c! [6 U- Vrt random 360

1 q! ~$ O4 e" |( I4 k
" s/ @0 |  |5 w6 T6 Zfd 1

4 e8 n( u* A" Y* w( l$ e- B5 H2 F7 B$ \# q
]

4 C/ \) ]7 o" l% g0 q2 u7 I) m, ~2 i  D! m& ?$ u
end
. {8 N6 p' C2 X/ R8 Y

2 |' s  V2 W% `0 f: B" Eto do-trust
$ @8 t! w; {) Wset trust-ok False
* V( b2 x! R, s! ?+ t, j. {
2 W$ B( p3 N% a" i. f0 @2 n

. T4 n; X5 u6 Flet max-trade-times 0, p$ s$ \- R& R" U3 C$ I
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 [9 }  [6 ^0 V0 e' u% f9 z
let max-trade-money 0
$ l2 K8 Z4 v2 Z) T! v5 D, L* Vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  k4 J$ {! d0 T1 a# |  _/ X/ O6 plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 r( M: k& Y' u2 {# `* B9 p5 \8 }7 q( N% {" M6 \
) `7 g& \% t" E/ A9 H2 y! v! }
get-global-proportion* @& I& B# I  ?' t: v# F. w0 d* C/ G
let trust-value
7 h/ }- [- ^  E- A; 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)
; Y/ Z2 s- [! s
if(trust-value > trade-trust-value)
( Z1 I6 {$ X$ p' S[set trust-ok true]
9 ]/ I+ |5 g+ w. [6 @$ Iend" x- I5 ~: N3 Y- G9 E4 }$ ]+ ]/ D

' W6 _* ?3 D3 r& Y( M7 wto get-global-proportion
% U( [* [: X4 n7 u( V, }ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! e8 ^3 l/ Z0 x! w2 y# S& a[set global-proportion 0]! S  l4 H+ B. d) V+ l+ o
[let i 0
! V  R  e8 l$ K3 |let sum-money 0% {" X# g# w5 i. s
while[ i < people]1 O4 L8 P& [5 H; i$ @* r
[9 t& m# D0 |: p# M- |; p$ ?) J
if( length (item i( n) U6 S% i) O3 d1 E
[trade-record-all] of customer) > 3 )

  f3 {, ~* Z& t: W5 y, r3 {, Q[) y' K8 f) O- q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# a0 K( l0 T7 ]+ {
]
1 G! |+ `" S4 X]
& A: I) |; f3 \, m4 u* glet j 0
8 V! {& Z2 p2 l2 T/ f7 h* Z7 S! Slet note 0
' w# \8 {: D( m1 g7 f, iwhile[ j < people]
3 P/ |6 Q( G- Y4 F" n! e[
! z) z0 O+ F1 ]7 F: g# {if( length (item i
3 `/ c% V/ O4 K  V# z; v  _[trade-record-all] of customer) > 3 )
# l! P) s0 g. _8 M4 O4 x4 Y
[; L; i) H" c  x
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 ~' G$ K( \* e) y5 Z% r[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  B0 A( l' L) D6 D" m[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 W0 p5 B7 O: \/ E: L$ B0 J]
: I) E9 F5 u7 x9 L' X( K5 m]7 P( `; G* Z8 T% Z1 P- W. q) ]
set global-proportion note3 {# c  b* v/ V, F7 T8 [. c8 {
]
7 v+ c7 D5 X: E4 ]end# l* p. |$ ~4 O; v  ?4 w* E

. n. Z5 j5 O$ p' ?+ Xto do-trade' @. k2 ~2 x0 H
;;
这个过程实际上是给双方作出评价的过程
/ n% \- I6 c3 A7 a- o  T7 J3 hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. G: u1 z2 ^) yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- X: t  r0 B$ K; t) x& [set trade-record-current lput(timer) trade-record-current" M9 m, M: @6 g- a# R+ Z; K9 ^
;;
评价时间7 W  S" `! R6 A* L3 F
ask myself [
9 x' X  ], e$ p& `$ c5 ^. Z- {4 Gupdate-local-reputation
9 @" Q1 U5 \! nset trade-record-current lput([local-reputation] of myself) trade-record-current
3 T/ t$ G: ^5 l]
4 v! n9 @: O+ P- a. Jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( B! Q7 a4 d' G$ ?" q9 x' `
;;
将此次交易的记录加入到trade-record-one. @' y7 k+ d# Z& `
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! q7 b1 _5 [1 T1 @3 Z% B4 hlet note (item 2 trade-record-current )
9 H# P/ O& _5 Q& Hset trade-record-current" r2 K6 q; i; Y3 f. U) n. J
(replace-item 2 trade-record-current (item 3 trade-record-current))
3 w( p; ~2 c% k$ }3 d
set trade-record-current
( r" g9 h; L4 q% s! `: b% C(replace-item 3 trade-record-current note)
$ f. B- o* J, z
0 F: a2 F' I# p) `
, R& {3 t8 {7 N- E3 _
ask customer [
5 z( g; Z9 V) E, P7 V7 o: _0 P) yupdate-local-reputation% D3 C, A$ B0 \/ n; W" D" m
set trade-record-current* l8 I5 W9 ]. J7 g& @
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 a4 v4 ~  E+ \4 ^
]" `, E9 T0 M2 I- F% T) n- k

3 g. t, ?9 D- m2 O/ T1 B! p$ B
6 z+ f9 W( r+ B% {, R4 q' \
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: q* `5 N& p8 p; @1 e
0 P$ p3 m- X% F, M) W
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, _- H8 o* |5 T% y;;
将此次交易的记录加入到customertrade-record-all
4 ?; o4 d1 u8 b& T% H& Kend
4 f: K1 V- c5 ]8 _& @. H; w
9 Q4 b& q$ O  c* {& D8 t' G8 Zto update-local-reputation" X. w3 _5 p" _: J
set [trade-record-one-len] of myself length [trade-record-one] of myself  N  ]$ F) h, E0 }& p. j

( t$ R4 T: P5 ?2 O( t8 X0 w& M, u+ ^) o( U5 l) w9 g1 t
;;if [trade-record-one-len] of myself > 3
8 h/ t' @, ~) `
update-neighbor-total# l2 P& J( x7 u) Y3 i; I
;;
更新邻居节点的数目,在此进行
- m6 g% Z. u. X7 Dlet i 3
: y) Y1 P) b; H( U/ blet sum-time 0
& t: ?4 t- M; o2 I+ S8 ]  {while[i < [trade-record-one-len] of myself]$ w4 V: ?9 x5 I! y
[/ ^; @3 _) ]0 C9 D  `
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, h9 n3 e5 s: R. _" k6 h6 hset i) Q* d/ N% }; G2 m
( i + 1)

  o) x2 y$ n0 k+ v]
1 N, Q  I0 h, t) [1 qlet j 3. L7 c9 F) O; V0 }/ O3 ]5 Z4 B
let sum-money 0, M6 t( _' B% r& P7 K. v
while[j < [trade-record-one-len] of myself]
. ]2 p$ C; H7 j& Y" v* ]/ k* m[9 i1 Z+ t! y+ w! Z( e. b
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)( z4 N6 `5 H* y8 ]  W; v" h
set j
" C' T2 |' j, B  _( j + 1)
2 Q. d" E. R: P  C' H% j
]7 l9 t) h. D$ e$ b* e: F. t( k
let k 30 u3 z, t  R* A- @4 k% `, K
let power 0
5 R! w% y% B, _5 Slet local 0$ u7 l# Q1 ?* e" y$ b+ }
while [k <[trade-record-one-len] of myself]
( m0 C* s  I7 E. d% B" u[: v- v- F1 }; a: \7 C/ o7 R% o
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) ) g* x" M4 c. S1 T: U3 {( F+ n4 Y
set k (k + 1)
0 n: A8 Q% _* u( q9 n]) I  O- q" N5 K  U! R7 B
set [local-reputation] of myself (local)+ H  G/ N; W3 f
end  d$ F9 G% V2 P1 K1 R/ A0 q% ?% @

, a7 T; c: |$ ?$ _2 g* A' }to update-neighbor-total0 Z( {2 M3 C! j, a9 r( r2 r

' W4 _2 j% A8 Z% M' X$ s- o' Mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ }  @" b7 G+ E3 o
8 t- \5 j3 G+ a+ Y+ L
8 n$ E. n" \, s: N5 O  }- a
end6 Q! Z3 y! z7 Q# s- r

: K5 u! M8 @( yto update-credibility-ijl
  v! V8 o# [, T: V8 G0 g0 e6 q! I8 ]/ O
;;
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。
4 A( k4 d# W9 plet l 0
) H1 U5 O- \4 Z8 W5 V% Q- p7 f9 jwhile[ l < people ]
: ?- v' P# V) n. r" T$ 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. J, Q7 ~% Z+ c! b7 s
[
5 T7 U6 }! ?% h6 _8 ~let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% q& J8 P4 m3 g/ O$ g
if (trade-record-one-j-l-len > 3)' B6 o8 l5 k, M0 n0 d
[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! y% \  _' b) v" p
let i 3
1 |7 b" ]" `% G7 C0 plet sum-time 0
5 Z1 Z, U2 Q, ^! K2 d+ i1 L3 jwhile[i < trade-record-one-len]
: @" H/ K( I3 D[# s% c  x* v9 g( U
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* t: W8 n1 v8 R: fset i2 \( S) P1 F% H0 H. S# w
( i + 1)
4 ^$ m. v- e' ^9 K
]
: N; v  Q/ \/ h" |6 @let credibility-i-j-l 0
0 h/ p  U& A1 @; Y;;i
评价(jjl的评价)
! s8 B3 A% r0 f9 T. s  T6 W$ a  U9 L4 Clet j 3& n+ G9 `& a8 c, n5 A# E
let k 4
; f( @/ x" Y4 [  V% \' {0 p/ ^while[j < trade-record-one-len]
- r$ o5 l5 O9 d2 P- i( c[* \7 a8 k+ H' e% a5 @- s% h
while [((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
: `0 ]' g& }$ J' Zset 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)3 j; q! G0 z* S# q+ q, ~
set j
0 V3 Q, m; S7 G0 K& Y* v( j + 1)
2 ?% S5 V; @5 V, ?" _6 c+ j
]2 g3 ^$ L  V* G$ I. N7 T6 k
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 ))$ t! P  D" A0 B: E2 T$ k' G. B. V

8 a6 d' c/ s3 ]7 i* M

  D; x% L, u6 F  Y8 T$ A! Tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 N! @+ h9 |, O* E;;
及时更新il的评价质量的评价
# {) w* l# r9 R" Mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 b( X6 |6 T4 @( z. d8 yset l (l + 1)
& M' }; F9 e2 _& O; p9 g/ E$ {8 l]: c4 z7 v6 @+ y$ |& P
end
6 c+ O  i3 u+ u! Y( C5 N, C: j" p; L
to update-credibility-list
+ i) o! T4 E+ f! V- ulet i 0
! q  P$ {1 W4 `) `while[i < people]
1 D4 \, N7 f$ r[0 |& m' p* Q2 S- h8 x
let j 0
. x* Q( ^0 o% T$ e$ ]let note 08 s5 F$ E* |' z! \" L; c
let k 00 j3 x# U7 G  e
;;
计作出过评价的邻居节点的数目  u" m: g  l' p) X) ?! d
while[j < people]7 s. s' J6 `( M7 o3 L
[; G" `' @7 R4 Y( l' P4 K. ~7 b4 B
if (item j( [credibility] of turtle (i + 1)) != -1)9 S/ u! x! b. Y: D! ~" j" c; p6 h
;;
判断是否给本turtle的评价质量做出过评价的节点
7 W/ t) ~0 C5 t+ g- l  Z" D) g% O[set note (note + item j ([credibility]of turtle (i + 1)))* I# ?% Y. C5 E( T8 L1 \
;;*(exp (-(people - 2)))/(people - 2))]
+ Q& G1 L/ a- d2 r9 n: L
set k (k + 1)+ S$ |8 K) B) K. a6 H4 ~* a, o
]. W  A. Z8 s2 S2 O3 H7 U: l
set j (j + 1)& z5 g$ f/ M$ [
]. k: b# |3 P' v0 Q
set note (note *(exp (- (1 / k)))/ k)9 K+ O3 U4 z% W
set credibility-list (replace-item i credibility-list note)
9 ], ?( F' h, Gset i (i + 1)3 X3 c5 o) c1 N, u& s5 W
]
" U/ L$ ~- G4 S! T  i$ qend" i" R' k8 x$ _+ W5 K
8 s6 V0 U% F8 v  U( }5 u' p3 a
to update-global-reputation-list( j$ k, K4 O, i$ Y- ?* C* q( ^
let j 0
8 I& U4 D+ M6 z! S2 V; Wwhile[j < people]- C: J: \1 i: b6 e% h
[/ f& ]4 n1 P6 p( m) b6 s
let new 0* u4 T3 c7 t4 F- o& ^9 E9 r
;;
暂存新的一个全局声誉
0 ?6 N$ ]- u5 ]# E" n+ T9 b; alet i 0* J8 U7 n3 i: G# S+ q3 o. ]& @
let sum-money 0
. \, u7 r6 O) m2 s9 v( z! d' plet credibility-money 0
+ S, x4 M& l0 j/ A9 P! G0 a6 D1 m0 awhile [i < people]9 B0 m. [! ~- [, G+ E
[
6 f! I4 b" k. g4 `9 cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 Z( Z9 X7 b8 q) z# K
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) G$ w' ]9 z; K2 T# ^
set i (i + 1)
7 ~& u: i/ _/ t4 k# ^/ j]) n/ G$ o7 }4 C' M& e( m
let k 0. T: N' o: F$ W1 I
let new1 0
" d9 {. {! N# h4 z7 cwhile [k < people]: A/ @/ r' b* b) Q4 N
[
* R: \- r1 b4 e7 Z9 @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)
. {2 f* @$ O; t8 G) p/ X: Tset k (k + 1)' I% j7 K3 _& t5 s) Z5 k9 v
]
" B8 M- @* S. I" j; m( O) _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# S6 d9 R# W/ A! iset global-reputation-list (replace-item j global-reputation-list new)
6 r5 L* G9 _/ Iset j (j + 1)* x7 N4 t' i9 h' S; R
]* A% }6 j& Y7 s8 n' f8 q2 c
end
3 g9 c7 b! a# n" ?7 c" q9 v0 \* N+ }6 |% h9 a7 K
# o7 ^( X, K8 g* u. k

& W2 F- \# i, i7 R2 Xto get-color  b9 S: U5 D$ L

6 K! ]  N0 H& O6 Y6 i3 Lset color blue
% s" R; ^1 u. J* M* D* v2 y
end1 T: ~) j$ W3 m; Z4 ^4 B6 a

1 v& E* K/ n9 J5 hto poll-class. a- d3 U. d, r& O- J
end
& B* D5 g3 |4 u
' v/ U& w( a5 }! b" Fto setup-plot1& C& t8 ^. L: R# X& Y/ b* _" V
$ u( ]7 t$ S" K1 L2 u& C
set-current-plot "Trends-of-Local-reputation"
; E3 t. _* ^8 c+ @4 M
; A0 Q# T$ g7 q  i8 ~# j7 q
set-plot-x-range 0 xmax
7 n$ X4 H/ I) P1 h* R  O

5 x1 I( \. ?' ~  x# z& Jset-plot-y-range 0.0 ymax

1 V* |6 r5 ^) Z. P, I  nend
& r& g2 q% s. X7 n0 x2 j, G' y& K: A, f1 z+ w- j3 _
to setup-plot2- y! p0 V& E, C) J+ r* }  P
9 b2 v* m" f6 i# v3 P  m1 z! v8 r
set-current-plot "Trends-of-global-reputation"
5 v; W' R7 F4 q1 r

7 s  b- \- \2 sset-plot-x-range 0 xmax
7 M% z' Q7 \5 |* i( ~  i# p
% z' l* I8 ?9 B
set-plot-y-range 0.0 ymax

9 w; t4 T0 j) @4 o* w% o- }end5 B6 ]3 C% j3 h5 D7 n' S2 z

$ a! {5 v1 s- V5 z# W, Uto setup-plot3
/ M$ w1 M* g  u
5 A- r# R- }! b; Qset-current-plot "Trends-of-credibility"
+ {3 a& l/ u" @- E7 T

( [- G6 u( O+ a8 ]  J& zset-plot-x-range 0 xmax

4 ?" _! u  v% w% @  ], q2 E7 H$ y
5 x5 Y/ d, ~. D1 L' [set-plot-y-range 0.0 ymax

; Z: g2 ?; Z" L$ w6 Jend
9 W6 `$ d0 C- }% t: F; ~! i# Y! A
, t4 L' n6 q3 P. N; zto do-plots3 b2 K8 s) l6 d2 u, j9 X! [' _% F
set-current-plot "Trends-of-Local-reputation"
& W. z7 }- z! H+ zset-current-plot-pen "Honest service"" a' Q, v5 a+ o4 |& ]4 m8 E
end
5 C  T- P8 s0 {9 c1 [
3 c- _( d3 ?& B* ^( Q: G' f[ 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.( L8 ?, n" T( c3 b% a  T) l6 f

0 ]; T$ V% L! q3 {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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