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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:
9 x5 i0 U5 O1 V1 E6 @8 n2 yto do-business + C; S; p9 [2 U' n
rt random 3609 H$ c6 f. z  E- {- b7 ^
fd 1; z/ C$ _, m  B9 k: \
ifelse(other turtles-here != nobody)[
: b2 U3 w( B" x# ]- Z, c, o% h) J   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.6 C9 ?% w: n, g& \0 d2 Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & Y8 Z$ x: L. u4 p; f
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" h8 T' R& w! F5 K) u' {   set [trade-record-one-len] of self length [trade-record-one] of self" d/ j" C% v2 V7 G) ^9 i
   set trade-record-current( list (timer) (random money-upper-limit))
  u7 x7 g6 @: h! }$ V6 A7 L4 s
+ \9 i- F7 j: n( M' C! p问题的提示如下:' ^$ h" m5 q' a! g  x$ t' r
1 Q3 r7 l. C7 p; z/ Y: p
error while turtle 50 running OF in procedure DO-BUSINESS" W& ^3 H: r4 W
  called by procedure GO) T6 R+ u' O  \* A$ {/ e; I8 N
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, J  ^% w! I; P. L
(halted running of go), z; P" k, O( g7 K* H, o3 R

- V- C* z! R# ~( G7 \7 h+ N5 V5 B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~~
5 n! _: \5 I! R* C: g( Z- l. J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
/ a: \7 k4 T+ ?% C/ nglobals[. b; E1 k0 Y6 h
xmax( v: R% B9 B6 d) b2 Q8 T; L$ W' t
ymax. }- u& `; [" P4 F6 L) _: v
global-reputation-list1 [2 Q1 D0 Q. @& x5 N7 ]% {

, E& W) I6 }6 o2 F8 j0 p3 ?7 z0 `;;
每一个turtle的全局声誉都存在此LIST
  b2 ]7 E, |) F9 k1 o* Jcredibility-list
/ w; c" c9 b5 N. U# D+ V;;
每一个turtle的评价可信度
* D: @7 k) U& ]" ]* ~- Zhonest-service3 K  V* M, T% W' Y4 j
unhonest-service
# ^+ M5 H4 r5 X* doscillation
( [# h5 B. \1 _9 Rrand-dynamic
; ~. c5 H3 c" ~3 e]4 {0 _) L, `( o5 A+ \  I
; e3 W$ ^2 b8 `# w2 o
turtles-own[
: B- g: p% A  o7 Y4 c- [* Ktrade-record-all- D" Z- E9 @5 w' m' L+ s
;;a list of lists,
trade-record-one组成
7 s" b/ t2 w2 N$ C4 ptrade-record-one& h9 f. u6 ~0 R2 X" U; H, O
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 _  R8 T) y1 i& Y6 o& q! {# ~' y: @! v
;;[
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 E1 c- {. Z5 v" a  ptrade-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]
" E7 R4 }5 `- m2 ?! U+ p5 l' Ecredibility-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
" G% g1 B7 p. f; wneighbor-total6 v6 t1 J$ Q+ A( d/ I
;;
记录该turtle的邻居节点的数目8 o6 N- o6 _  F# H& C
trade-time3 j+ r: @; R: I* A( F7 f
;;
当前发生交易的turtle的交易时间3 ]  t2 r8 N+ W1 H7 ]$ Z
appraise-give8 t: C0 V# w7 ^
;;
当前发生交易时给出的评价
1 }' q; p$ ]  lappraise-receive# ~' p# x& m; ?7 v; j% ~
;;
当前发生交易时收到的评价& l  I& Q" m  P" V/ Y9 \
appraise-time
0 g) {# }5 {" M;;
当前发生交易时的评价时间1 S: {* O6 F) G( m  c! L& v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 ^5 ^/ \/ E% `5 f" _; l, ?& z
trade-times-total
, O& M5 u, v# _; c$ p3 m0 b;;
与当前turtle的交易总次数  j, s4 K% D/ m5 G/ P9 y
trade-money-total
' d( n- K) N+ m;;
与当前turtle的交易总金额$ T$ j1 u, O7 q1 _0 F( W9 g
local-reputation
/ w% X/ N7 W& a/ A/ K5 C( Hglobal-reputation" c4 S1 z6 T# l& ]" K% M! Y3 j4 H$ {
credibility0 F% v6 w* I$ c7 g% ]7 H/ s3 V$ N
;;
评价可信度,每次交易后都需要更新
" R: j  e& Q# c9 O/ Scredibility-all
6 x+ ^& E$ r1 [' {; E1 G$ B4 Z;;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
- x: x& w1 d5 }" ~, B" w. l6 Z7 ~* h
;;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
- K5 r# R( Z) u8 X+ A, kcredibility-one
' q3 U) _2 S# ]* b- y1 j;;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
9 J! {* B+ K" pglobal-proportion* n- a# k5 U1 p4 v* X+ B
customer
' Z$ J# Q2 G/ ]6 b# U' Tcustomer-no  O% u' v. h8 t6 U* ?1 i7 a
trust-ok" c  r- Z* {1 ~, [5 K
trade-record-one-len;;trade-record-one的长度
6 |' m; B% p& P3 o$ X]
1 B! B3 g/ g5 w; {  y
( i- q* N- j0 \# y  O  C;;setup procedure
5 Q+ B* U2 X$ k5 s) v# \4 j5 t; t, a  P) g6 `
to setup
# h- N) q8 `" V! ^. G$ a% v+ L( o# I( U) B- R, Y; T. K. H
ca

7 O  S6 S' K7 u; C
: n+ s1 w, k8 q8 K( B  Dinitialize-settings
% y! H4 ]4 |" g+ X

* b3 m* D2 r9 ^2 fcrt people [setup-turtles]

1 e0 c7 {9 H. L' s% _! p# k* }6 |# u4 K9 ]' \4 i. q
reset-timer

. i6 W- k1 @( J( W- R  ]! \, z3 R
) n8 _; D. c5 s6 a6 m/ L( hpoll-class
% G' f. e4 d/ }+ P  o, I- A# j

7 `+ T1 S. {! a% asetup-plots
' `4 z6 r7 o8 l- d3 ~
2 _; X' @" ~1 \3 `: [
do-plots

8 a* \* h  `% u$ ]1 I2 h' N4 ?8 cend
4 X& j, b2 v) B6 h$ h) m/ Y3 W. I4 m1 I* h
to initialize-settings# F7 u8 E. w& Z! w% J/ D
2 r! P3 o3 X( o8 U5 j5 W( l
set global-reputation-list []
% T& Z9 F. Z! S) H

( w. ?" A/ t5 n% _* a5 gset credibility-list n-values people [0.5]
: v; G$ u+ I6 [& A) {1 X& ?. Z

4 ]. i. G2 c4 X* D2 @) pset honest-service 0

: R5 s  n; g: x- Q5 x
/ {& Z0 J6 X% f" R% ~: Eset unhonest-service 0

0 J9 k" [0 T" ?5 m* y+ {' S
+ z% J. P' ]% J0 }: \3 H7 xset oscillation 0

  A% l! H& ^& R- g' T7 h4 ?, s
  U; h3 ?+ ]7 K. [set rand-dynamic 0

, E1 [6 V# f( d5 ~) kend
; G0 R" M7 i' _, L" Y5 z8 L9 {
1 k8 S* t  d, P2 dto setup-turtles
) l7 `6 |6 g  {& Eset shape "person"
: X3 q( M) `, p6 W0 T# u' l9 J/ psetxy random-xcor random-ycor# ~- m0 L, t/ }
set trade-record-one []
! F1 I% u( b" g
) q; o( y# O8 w+ D0 z$ M
set trade-record-all n-values people [(list (? + 1) 0 0)]
# j/ Y4 L9 }, l0 q0 m& B) @" G

5 }0 n+ @) i2 ~' ]8 T4 @& gset trade-record-current []; ], j0 x4 L0 H& _( X, ]
set credibility-receive [], s+ u0 k; `+ S
set local-reputation 0.5- O; d! u5 U! }) T3 k/ o
set neighbor-total 00 b+ V  K' T/ G$ y4 d
set trade-times-total 09 G- d2 y4 k- M- ~/ E! Z7 w
set trade-money-total 06 S9 f1 t! x! w
set customer nobody3 A  |& C2 J$ O% N8 O  V2 ]0 @# c
set credibility-all n-values people [creat-credibility]( c* s; s: J' U7 V. o
set credibility n-values people [-1]
  D$ q* t  o) ?+ Aget-color$ m, h2 Y, M* t3 X
5 c( R6 s9 P2 Z$ o
end
0 b# i" @. T  A7 P* n, f& \
3 G# r5 ]; [% Rto-report creat-credibility
" ^% w) `0 u7 E5 b4 _1 e9 nreport n-values people [0.5]
- ]7 ~3 l- o' j; X# lend7 q7 M7 ?* [* q" N3 O/ d. {9 E

( n5 R, {- o8 P, v* Nto setup-plots6 z* U8 s5 O  N
8 F, y2 i1 n- R( l- r# u, X
set xmax 30
5 E9 A( \% Z6 V7 M7 |6 k
+ I; N9 ?# }4 ~+ Q+ m
set ymax 1.0

2 }* V/ c1 z9 \0 w5 d9 c* u: J& h  _% f) D& L4 H" ?0 D
clear-all-plots

+ |" H# A5 N% K1 g& N3 m# k  g9 u& D3 k) a5 C  S: [7 x% B
setup-plot1

, X. v( D5 |9 _; ?4 S! `# r6 N, Q, S  P" N+ l, U
setup-plot2
3 P7 k  @/ P# X' {5 q

6 o2 s) B$ T& X: Wsetup-plot3
/ J. Z0 u4 F( J& I3 e! w$ t* D% C! M
end
+ z" R8 \, T" ^( `
) p3 C( U' c. v* w3 P8 };;run time procedures" l3 b& X* ]5 u- R1 x7 }

6 k' c* o4 o9 X8 ~& Ato go
( }6 T, t) U; \/ B$ n, T! H$ l5 h9 }3 Y  O* m. v$ S3 q
ask turtles [do-business]
: y0 ~* t2 ~2 X$ ?1 I1 g
end
0 U' x6 w& k5 F  U  B4 E& g" z# a
to do-business ! B  G! G: i; _$ `3 F" m

+ f) a7 d! T( Y  W  c6 d
1 K* Q) a. B8 i. \rt random 360

% @6 u. K  ~9 f  P
  w* M$ r1 H' {% {0 T8 {' c4 tfd 1

3 F7 I5 L# d4 p% h  b; i1 \$ {6 n' A* h$ A6 h- s
ifelse(other turtles-here != nobody)[

/ \  q% U8 x1 L- ~9 M; z  ]" h, a2 K* f0 D% [* \7 d- J1 m3 {+ O
set customer one-of other turtles-here
' l7 x4 Q& y1 Y. E: \

. T) y* `* _3 @) ?' s, o& @;; set [customer] of customer myself
. m$ k* R0 o! W! m) L

9 W, S8 w* e  u7 _* R- D5 Z; k4 X0 eset [trade-record-one] of self item (([who] of customer) - 1)8 A( Y; @) r( O5 Q
[trade-record-all]of self
& z5 u; P/ b# T" i! \( J$ b;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  }) _' R# o- [) _
" c0 H4 N+ m. T9 b7 U: k$ k
set [trade-record-one] of customer item (([who] of self) - 1)- n! C2 {5 H9 }& _4 b9 `
[trade-record-all]of customer
& V: m2 p1 \/ G$ X
# H) _0 v  c3 Y" |& i
set [trade-record-one-len] of self length [trade-record-one] of self

& v+ |* Q4 g$ [! V/ S0 Z
. H0 Z7 ~2 ^) bset trade-record-current( list (timer) (random money-upper-limit))

/ Y  ~5 h2 m# j6 G8 N$ B8 `4 L3 X6 X/ u* I$ U9 X
ask self [do-trust]; l+ i8 ^" \  `. R+ s) h
;;
先求ij的信任度
. j& J5 L5 M, w( D. I' i
9 g+ E* a! u( j; D# c# P  Fif ([trust-ok] of self)
5 z: Z8 R3 r9 r6 ^0 @: y5 I;;
根据ij的信任度来决定是否与j进行交易[* E6 E& Q4 Z- m" p5 V
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* n+ p" c5 F/ N+ _
! Q$ \  T/ B2 b9 @, t  ~1 y[
: }) ]6 M/ Z3 K: a4 W* }1 ]0 x8 l
& v# V* R3 l9 O+ x
do-trade

! X: ^" u. O( u: m" y- n* g+ v4 l  L3 K' V. T
update-credibility-ijl

8 `6 D' e6 r; B4 W+ _
$ H6 C( ]1 [+ nupdate-credibility-list
! r- z9 |/ G7 u* q" o
* a6 I2 t" W9 }

$ J/ i4 l( h" ?/ s; W0 ~, Mupdate-global-reputation-list

# S8 k2 z$ D3 B- b  v2 t+ O6 ?& w% F; q% a4 i
poll-class

  {, ]# j4 {1 l! M9 u3 g+ o$ y: v
4 k) o) A9 [% Jget-color
( r# u4 M# g+ F! Q

! M$ {7 {1 f: b4 h6 |6 [5 Q8 Z, Z]]% [8 p8 K2 ^* U8 O& `" I

, W+ S6 S3 _  q; N;;
如果所得的信任度满足条件,则进行交易
9 a7 J: P" E# k  w0 y% f
" E/ G2 x  v3 C% U# x- T[
0 d* B/ S$ @- u$ `  i
% X- G1 C5 X* L# x$ G( P, |" s5 O
rt random 360
! `5 D, [/ a6 v, ^1 R( J

2 d# M& G9 ^3 W* V0 n; _) efd 1
3 k' {" ^9 F, @# P2 }

: t8 O: k" B5 v; u]

6 r. i! p9 |* ^; r, ~: Z. _2 E
( t- w* A4 b( O  |end

8 H# I; K5 u% P  h
4 v- I0 Z* z; m1 Nto do-trust 5 j1 W, N7 f- j7 u& `
set trust-ok False
( w* I% X5 S" b; Z/ F9 @+ S
+ Z" [9 O: b8 W/ g( j

% E5 e2 c! x, U5 J* \$ wlet max-trade-times 0
! n* D! M' N+ c4 q6 ?, G! zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; ~9 |) S; M5 J1 M: S8 Xlet max-trade-money 0" N: f0 O3 w* T2 d' L9 l& t, v
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 w: q) C/ t$ ?$ V( i" O
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ k( q+ L; d6 D$ f5 g! u
+ N. G2 P4 h6 b3 P: [# Z- {
$ X- V8 d+ F0 _8 Q1 ?3 x- {
get-global-proportion" ^* q  `  ~6 z% t: G- G" C% `
let trust-value
4 D% W$ `' e" }& t) O4 K1 [0 X/ Alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
5 U1 o. b3 L9 e! |1 q; Q
if(trust-value > trade-trust-value)3 P6 R! e2 `. Z% s. Z# ?6 J2 J- G' D
[set trust-ok true]8 h; Y! g# o+ }) I* a6 p0 h9 ?
end, \; r" v; Z, Q3 i% o

# w& t" i. c9 f2 G3 I; Fto get-global-proportion9 ]% x3 A# J$ \8 d5 N5 [2 X  Y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( G4 ~/ B! I9 Q  {8 T8 d- D! \
[set global-proportion 0]: ~4 D: G. r0 ~. i- W2 J
[let i 0: ?1 b# C1 d+ k0 R
let sum-money 0
7 o) W4 T7 K7 [) V8 L. w: g4 A, Ewhile[ i < people]- \! w4 ^+ h% k
[
' Y4 |# O! X% W. Q9 z+ uif( length (item i* I" ?" _* w3 l' N" ?$ z! v1 b- _
[trade-record-all] of customer) > 3 )

9 i' M) b& v) H+ `1 p  \[% l: p3 O  d/ F" J: J
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- d" d2 c3 U; s& N]- W- o+ X5 w; D( H. F9 W8 r
]
9 j2 @; P+ l1 y4 Elet j 0, ~6 @# J$ _! |
let note 0, G/ J% {6 {) f9 S& C- W
while[ j < people]
9 q* p- P7 C+ Q5 d  o9 O! E[
1 U# c  T+ S6 K# Z: m, I1 aif( length (item i0 n7 `3 Q* Y9 W0 f8 k* G
[trade-record-all] of customer) > 3 )
* c. H: v* V0 s* z# K' N
[
) h& R* ]# y  ~. f' Y7 W+ Cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 u. g( m3 m* c" g: I. i3 p" @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, A' _2 M1 z' K2 P* G6 a6 w( Y; u( l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' e* P2 _. ^0 K9 ?. s1 H( n( }]* g1 C& D' n9 s
]) j: ?/ W# }8 ~! V# C+ h5 V5 Y
set global-proportion note- C% z( r5 N1 }1 O7 y1 Q
]
' ^* a) n8 N8 S. g* U0 Y  tend/ H* [0 X" N2 Y; e0 w

8 l7 R) @' f; L6 w( g" l7 q) [to do-trade
2 R6 G: h. H8 C8 s4 |& d' C" f/ m% q2 s;;
这个过程实际上是给双方作出评价的过程  B2 }& a. ~" O. t+ ]& {9 }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 S5 G( ^( w0 `% D# I4 r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 ^& a/ S% S9 Y. \8 i  Zset trade-record-current lput(timer) trade-record-current
5 _/ i" w5 |+ K( a;;
评价时间
3 X9 I5 ?; S" n5 Q0 H+ L9 Oask myself [& t; \" _6 G3 T4 ?- B
update-local-reputation$ O$ V# {# c9 G1 p2 \  E/ v$ b
set trade-record-current lput([local-reputation] of myself) trade-record-current
7 l) J/ a) C& E, v% T" z3 H]  g2 Z' z9 S6 t5 a7 [
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ b' v7 n1 ?! S# t4 E, w8 Y;;
将此次交易的记录加入到trade-record-one8 r( b5 @% k% q) d' A
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  L& A1 w" q/ Y/ _' ^let note (item 2 trade-record-current )
5 O3 J6 m( Z1 ^set trade-record-current
# u4 t& [" @6 @. Q(replace-item 2 trade-record-current (item 3 trade-record-current))

# O0 J" U' b5 s3 \set trade-record-current
: n; y3 ~& x& ?. V- ^3 D(replace-item 3 trade-record-current note)
5 a6 T5 R3 I" K& c- o" b* y; a5 o" s3 H/ d5 Q

  \/ f# Z' Y5 g' B- R$ Wask customer [7 g4 t4 @. ~# a$ z5 ~
update-local-reputation0 z5 f. G; i2 e& B
set trade-record-current- {% u) f( L7 G, A
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& B! x' g! ^) X. Z; b4 r. E
]2 C( L0 D( ?/ v' w; W( A# U
+ M6 b! G' E# H$ d+ ~# @
' k" t: V+ L: I+ c
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! {: w6 k6 X2 a  t- G$ l
/ M, u  {2 v( A" U0 |& x
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ }' d* ~( H( s, O' e. v4 i7 p
;;
将此次交易的记录加入到customertrade-record-all
8 p1 [; K5 {# v; H8 t3 ?% \# eend
! t4 d; Y% z6 _5 g) V* a& a) w# Y) f, C
to update-local-reputation
& B1 ?# d+ }. n/ l$ w0 ]! Wset [trade-record-one-len] of myself length [trade-record-one] of myself& ]1 z7 H- f7 ]9 b9 x
- X( e- l/ S( `
8 U% ~7 C; T4 P; [* _: O
;;if [trade-record-one-len] of myself > 3

2 L5 x4 L% T9 `. h* `7 \update-neighbor-total9 M, j% _+ Z( d0 m) F
;;
更新邻居节点的数目,在此进行  q5 p$ G( T5 d$ t( d
let i 3
/ Z2 C. G  Z3 ]( i9 D, i9 j9 Tlet sum-time 0
* d" u. [- }+ ywhile[i < [trade-record-one-len] of myself]' d  p0 b5 \' S5 y
[5 ?! T( x/ c) y; t8 E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ }4 B* a  T  s9 E
set i8 U2 p6 G" w, Y, l/ H
( i + 1)
) j! O( U3 Z5 c0 P3 p3 L
]( s4 h7 _4 H' z1 `! h
let j 3
2 z) g/ _8 q/ I# ulet sum-money 0
$ y7 u- U7 V  S3 {. Xwhile[j < [trade-record-one-len] of myself]
2 E- ]9 `- L, Z) D) e[
; @, S+ R! C2 ?, i0 Vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)) g; q# q- r* J% \1 W& o  p
set j; }# \: X+ Q; o; ~7 l: `
( j + 1)

3 a7 v' D, z. d0 y; L8 S6 V6 ~]
/ F9 u$ a# m) J3 [) P! a& Llet k 3$ L9 D5 b' o9 v! t
let power 0
, ]4 r3 g: b; c2 F' H5 h8 |let local 0
( M% c- B9 [0 u7 v6 ]while [k <[trade-record-one-len] of myself]
6 ~% {; c. f5 o[
# ?1 L( N. I2 P& B5 Hset 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) : ~+ f& a; T$ \7 L5 w7 y7 p$ s
set k (k + 1)
7 L9 A( ?/ p# `" R( \% a: F+ f]
& ]. M$ e& Z9 Zset [local-reputation] of myself (local)5 O3 V, n. [5 D! i5 @) v% T
end5 _. Z5 I* z# o3 T4 }0 ^) f1 i( @: x

" m: w- n' ]& D) M" Gto update-neighbor-total% N  [( c2 o+ n5 n5 }' z

4 d0 X+ ~2 N/ [+ Pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ p& g1 A: U, ^0 b+ h; q" v
0 G! {- b( a8 |5 o7 O" s  h5 Z
# J- a( F# d8 E$ n5 N+ `5 B
end. E# g+ `7 ~* y2 w: C# M# m

; g7 f+ ^+ _5 x" lto update-credibility-ijl
1 j. o9 l) r7 F' g9 V( v& ^' f- K' I* g
;;
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。
. q9 j; Y, r* ^: p1 I1 N4 E* Tlet l 0' s! V: d: z+ P# O: @; B
while[ l < people ]
  m8 v/ Z0 W* i0 {; n2 p+ C;;
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+ Q2 i' ]0 Z. M. G  h2 w
[
) s) }6 j5 e2 _; g! R4 O7 Rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)) N6 B0 D  Y6 n) t3 S  i! n
if (trade-record-one-j-l-len > 3)9 g1 L' L, g  L- Q; H' ~
[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
# P* Y. a% E/ T& {let i 3- v2 P0 c; t9 Y6 Q. \1 S# }
let sum-time 0% b4 N; L0 a; m& o
while[i < trade-record-one-len]
4 B2 J5 m5 j/ c# f# n" \1 X# M! R% m% ~2 ?[6 \$ \, e8 [& d5 V' F
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! Q) x5 t, ]# o% k4 L! wset i
/ B3 Z- z1 o$ _8 P7 h( i + 1)

/ r4 ^# Z) ]# y4 }  @]
- J$ k$ R5 h3 k8 K( g0 A) P/ L! `let credibility-i-j-l 0
- F# G1 }0 x  \! K; O$ I" m;;i
评价(jjl的评价)1 n0 Z) K, P2 N5 M. L% w, h
let j 32 k0 Z7 N+ n, T4 X9 Q8 |
let k 46 t+ v" i9 h+ Z" ^
while[j < trade-record-one-len]8 w) I/ i$ A# }) m) x1 x
[
2 \: f% \6 I; swhile [((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9 r5 N  Y) X/ ?! X% ^
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)
' @+ Q; D! t5 ~; uset j. D/ j* q$ x2 O8 [- B
( j + 1)
1 y9 V) B# g! x) M7 f8 A5 J7 e: l3 z
]
- o& N4 y& U: s: J; v2 Aset [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 ))
0 J  b; P( A& D
/ X/ N9 S# d: O9 }: w' B0 p

) f( e' W1 Z& b, klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& c% `' Q6 S+ X& P( o;;
及时更新il的评价质量的评价  ?$ C( j9 ~3 f) V
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 ^$ Q- L5 {2 _+ Q! ?1 W  i+ Oset l (l + 1)
+ C" k% L$ ^5 H' R" D]
; p7 p* D2 L# a1 O/ X  Wend0 Y1 Z8 l; S! }1 C

8 [0 f* @- s$ |8 A! H7 ~to update-credibility-list/ e1 m6 E  n8 v/ s
let i 0
# W( C* ?4 }  Q8 w. B; e% Mwhile[i < people]5 O# I# c0 _8 m! P8 N
[
6 m& C7 |: @: C  ?+ |4 Y9 Wlet j 03 x. k' M# \3 H7 N! p' {) k4 K
let note 0
3 W, l7 ^7 p2 I+ y5 glet k 0
6 U$ e: o: R9 }- G" Z;;
计作出过评价的邻居节点的数目
- f7 N0 S2 F  W- D. b% }while[j < people]9 P: \/ _* I" X6 j9 c5 {$ @6 {9 `
[
6 j, K3 {. r' `8 t+ Z/ U+ V; d4 Hif (item j( [credibility] of turtle (i + 1)) != -1)
4 v5 H! k6 B& _- R6 n1 q;;
判断是否给本turtle的评价质量做出过评价的节点
, m2 |/ X; S  j* M[set note (note + item j ([credibility]of turtle (i + 1)))
1 `' v) T+ d0 m. f2 Q; R7 D: J;;*(exp (-(people - 2)))/(people - 2))]
: k% y! d0 l" g2 m/ `
set k (k + 1)
, A+ \; {' L. y0 r( n% [' m]/ c# a  A. v+ Y4 x+ g# n( w6 N# D- ]
set j (j + 1)
2 D/ P  M7 _% Q/ Q( G" n: O]
: |  p, O( C! N, \6 nset note (note *(exp (- (1 / k)))/ k)
& v1 f* f5 u5 y* \. k$ C: Eset credibility-list (replace-item i credibility-list note)
0 P1 \8 ^% Q' Q! H! }set i (i + 1)
* L3 |: x# f( d5 [6 Z+ N/ K]; T9 ?7 l0 T$ F0 K% ^2 ~; R
end) \. D- X9 H! R/ g* Q
6 Z" z, O* _( k
to update-global-reputation-list
! b. l* B. L. M, |) tlet j 0
% B( F) \: \( z/ E& L/ p" s3 c8 gwhile[j < people]  e5 D( t5 X2 \! l
[
& u- v+ i9 ~& Wlet new 0
5 m7 G8 L6 l0 v, @& {! }$ l7 E' W7 B;;
暂存新的一个全局声誉
/ i" P# D/ O0 V" ?  A) R) H5 M4 Xlet i 0  I6 P0 E6 G/ R/ X) B0 k
let sum-money 0( a% s7 B% v. b$ C' N2 H- R1 ]
let credibility-money 0
9 r  [4 j+ H1 N7 Ewhile [i < people]
) x' d) M& P0 l2 i# ?( l$ ?% a[
: q/ J) I) b% sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 r9 e/ L5 V* M+ Y1 V- @! Lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" \) E4 [) E" h% a- |- _6 b6 ?4 y% h/ Wset i (i + 1)
4 T# {' J# |) D! ^" C0 B8 |]
+ v- d- n# J/ d2 Z9 ?' elet k 05 G0 Y# c! c3 N% i' x9 |
let new1 0
2 N5 B! X6 i: J. ~% M1 Vwhile [k < people]3 y( ^, b5 L5 m' ~/ w
[
7 A! B% J/ \2 H" Iset 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)/ t7 I2 z* L! h# l8 U7 B
set k (k + 1)
9 L2 M0 C) h4 F  P. Q4 L$ D]
' q4 ?3 E" e/ s4 f9 j7 U0 Tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 V! M  N2 X5 N- e
set global-reputation-list (replace-item j global-reputation-list new)8 M1 K  o5 I' z2 ^1 M( d
set j (j + 1)& o8 r5 W/ ^" I9 O) s. K+ I9 W
]
9 ]4 j# r" [& y) I* y, \0 ]end
5 d0 h1 a/ U8 ^2 Q5 |5 P6 z# L; ~; w5 t5 @, P

9 k/ A0 ?9 w# G1 G6 k5 |
. |9 d* G9 N, @) X( Z3 P! _to get-color
4 d" m4 Q7 O2 k9 P5 F; {
4 ~8 _& X4 N8 J2 C6 K4 aset color blue
8 T+ `& V* K' n* ~; s" f8 Y
end( |( \& ]4 W* Y0 ?+ c
1 a* W0 m: P" l. P0 |8 \$ D
to poll-class
# Y2 p" Y, `; V* m% R- jend
, @( P1 N, J& S8 m* F% ~
7 P6 f3 P( P8 |& t  Q4 w( ^9 N2 Lto setup-plot1
2 Z# l0 S  T1 q2 g/ s) T+ `
  J8 |. g& j* k9 gset-current-plot "Trends-of-Local-reputation"
. \3 e! w( h' w/ T. L( q" B* E! l

& w& P  @& k5 F) xset-plot-x-range 0 xmax
7 r' u% a5 }3 g

! V# @+ i3 _& K; `  d$ s" qset-plot-y-range 0.0 ymax
$ N, D1 a  O2 d6 \
end5 C) O' y+ l! l) u' K9 ]
# l+ T( y& x8 K: w$ s6 n0 i9 L; W4 i
to setup-plot2( ~! X/ y  y7 Z7 u

+ b! g+ i4 {8 |( wset-current-plot "Trends-of-global-reputation"
4 M) A( W( x0 `6 ?. B, \) e7 o& J3 l

; j8 K) j% I# Z0 H; Pset-plot-x-range 0 xmax

7 }7 o6 Q4 W' A- N; H$ O! {. K: b% [3 q$ ?
set-plot-y-range 0.0 ymax

1 q" x/ i) Y' o3 ^$ xend+ X- G+ i- R6 v! V  L2 n# p1 D

3 k* t+ _  J# I0 M1 C; X7 ?$ e& Rto setup-plot3
4 F2 ]4 f/ ?0 O0 V  w  H3 c- E- T6 Z1 x0 ^
set-current-plot "Trends-of-credibility"

9 w" ?* k" K: j0 s# H# B# Z. s0 @5 |/ x6 I% a' d3 B5 O
set-plot-x-range 0 xmax

; y7 d3 d1 D+ w2 Y
  S; {( D3 N& x" Aset-plot-y-range 0.0 ymax
% \+ g& s9 p. l% X& S! m5 q
end
% N% n: c) o" I# G5 M2 |( k8 R! Z9 d
; q# h0 \3 S2 ]. vto do-plots0 H7 b# ~! C( p  V
set-current-plot "Trends-of-Local-reputation"7 a% K0 B! I, r' W! Y; A9 |" [* q
set-current-plot-pen "Honest service"
8 B6 F4 {6 b$ m! m8 Cend
0 ^7 _7 R3 j( O, h' F( Z
1 t8 D- l. s) J9 [3 x. d2 r[ 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.
  f. z$ g+ E' Q/ L! G& ^8 X- u' p
) }3 F# H, E& I$ G2 p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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