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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 F) b- u' v7 B( R+ H) u. y- y; Oto do-business , O5 k( i* T: q9 U$ K3 E
rt random 3608 ^* u+ T- i, W1 U, @
fd 1
7 U! @. k+ L" q6 c7 {& X ifelse(other turtles-here != nobody)[" u, n, K7 O0 J( t0 S
   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., j7 f- u1 U, i6 m
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' v* s8 S) ~( a8 Z; b
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" _# r1 b- B6 G( q0 V0 T7 r   set [trade-record-one-len] of self length [trade-record-one] of self* |1 D' }/ V- v; y7 ~9 q  w! f4 a
   set trade-record-current( list (timer) (random money-upper-limit))
; I$ \& `- X1 U7 M5 d( l7 f% k5 `% L5 c! y$ c4 l3 }/ v% f
问题的提示如下:
+ P' Z! b6 U3 G) G4 G1 c3 o: m' ^
% P( W2 y( p1 \8 {error while turtle 50 running OF in procedure DO-BUSINESS) m1 @# ]9 p9 M/ g" j  s% O
  called by procedure GO
' C: P+ i7 g/ P+ y# p7 ?OF expected input to be a turtle agentset or turtle but got NOBODY instead.  ^$ S4 Z2 J0 |
(halted running of go)$ _6 d* W; J8 C4 \: k

! R$ _! m$ P4 ]) v5 O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~~
2 l. a( [3 `1 a9 I5 X( O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" r9 n/ n0 V9 ]( W6 w1 C
globals[9 d& C& `1 |! R( @$ H
xmax) |# L% r; e4 K! K- |/ C- M8 r- F
ymax- V6 F' x2 N5 x( ]: x- f! B
global-reputation-list, f2 j$ G( n9 u7 _4 V

1 ?0 N# d4 |# M# c$ V3 f0 \$ O9 X;;
每一个turtle的全局声誉都存在此LIST; Y+ U% y( U- Z) s. {
credibility-list$ u# \9 P: J! Q! P1 ~
;;
每一个turtle的评价可信度  \3 W5 y2 @) }1 O' _5 f0 h
honest-service( n$ b8 ?2 v% J3 A% j$ A
unhonest-service' y9 A& v" i, n: @, {8 {: ~
oscillation4 T  f  N' \% o! l/ a' a
rand-dynamic
9 h, J. }( H3 Q3 }) n/ O/ w- c]
$ x. F+ }# f6 B. b: F
) w: N  ?  \9 r) Y/ B8 q) B* Yturtles-own[
* ~. q& D1 _) g8 M2 d# w% ktrade-record-all  `! W* u" {, r( [/ B
;;a list of lists,
trade-record-one组成
: Q' ?# q/ s! S) V+ ztrade-record-one# \7 I+ E, i6 l/ q/ n4 e3 j* u
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 x$ G5 i( Z2 ?  |1 Z. o1 l/ E& J' k

' y/ e$ G2 M6 V: m; d;;[
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 H2 D5 l; _% R( \8 rtrade-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]" p8 U# |& F5 G! ~
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
. Y' A$ }9 n( Sneighbor-total( c& z3 C5 A% n: C$ h" O% h4 G  K
;;
记录该turtle的邻居节点的数目7 i+ V$ j* Y- R, D5 r0 O* p
trade-time9 `5 U, e0 j7 ^6 w3 r' h2 j
;;
当前发生交易的turtle的交易时间3 y& T$ I6 e% A" E
appraise-give
9 x" m1 t* ]; ~( E;;
当前发生交易时给出的评价
5 [& A" V7 l3 [! i0 Yappraise-receive( b7 K& H! n  ~7 C* i
;;
当前发生交易时收到的评价" S7 {+ a# p% n0 P+ J2 X
appraise-time9 P8 i! Y4 G$ p4 O0 g( C
;;
当前发生交易时的评价时间. w& x5 \& R' @% q; m  [
local-reputation-now;;此次交易后相对于对方turtle的局部声誉! H& `& y- K" e4 T
trade-times-total
# X" v; [" w3 R- J' ^;;
与当前turtle的交易总次数4 U- ?3 G0 Z+ c9 F" k6 J
trade-money-total5 z. @" N; M5 {- ]/ \& T( m7 a7 n
;;
与当前turtle的交易总金额; H8 t& X  }# m5 f0 s* {
local-reputation
3 u) J$ k. r% F  Mglobal-reputation
4 m: s, G& G9 O/ X+ qcredibility
% V1 g' v! L2 J5 `; {& v9 ?) S$ W;;
评价可信度,每次交易后都需要更新
# t# ?$ q, H. L5 m' e0 ncredibility-all
& @6 e3 X" ~8 I$ ~7 L;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据6 X$ m% ], r8 A/ c5 N* ~

& {8 ~  k9 M3 Y( d: v, z/ r2 ];;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
, A, y3 K7 Y8 [credibility-one! Z8 q) v1 H6 P4 `) D
;;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
" h/ o4 O7 |% R; ~* s0 n& aglobal-proportion) c. B- g: I! h$ o
customer: Q$ k1 d( v! ]) y. L
customer-no
! u- I4 @+ S! J; R& o! o8 z1 V1 Etrust-ok( Y' _! S, k8 j0 U% }: _% D) Y
trade-record-one-len;;trade-record-one的长度: ^# h% @0 x8 O7 i
]$ P  R8 C6 F5 P4 {% T
$ m. x- u4 E+ I; J7 H6 W2 }! S5 g5 f
;;setup procedure4 r* O2 W# e& |0 z7 c
% m3 K, I9 I3 g/ N) D1 O9 \1 N
to setup
: E) h8 ~# M" q  D) d* m0 K* q: F9 \; N+ E/ e
ca
4 @" E! r0 ]! [2 ~+ e

5 l7 z5 |" B7 linitialize-settings

3 {: h: c) }) M1 h
6 E2 G* W0 `4 n3 t& h) ccrt people [setup-turtles]

) H4 z" x  N7 V! L* k6 s$ s1 T2 W4 A& o
reset-timer
( W. \* L+ f. L' S- f" L

- P, {) T$ g- D" D6 G/ zpoll-class

! P# l( {5 s9 Z  ]) j: A+ ]5 Y1 m$ n8 f9 Y, Y, }
setup-plots
: {3 H9 C" Y8 x* I$ U! F
: e/ Q: D# n9 w6 A: V' V
do-plots

2 d' ^# P3 `/ r% e3 r$ wend
% s& p, o" P. [# }4 _0 D+ S2 b' R! N
to initialize-settings; V9 h  V; D. u

/ S; Q: x0 P$ wset global-reputation-list []
8 O0 Z8 }0 \5 _* i
( x' x+ h5 p1 s! t
set credibility-list n-values people [0.5]

& g& |/ p0 V- j* ]$ g+ T( N' j% H% t5 T. c  Z' r
set honest-service 0
6 d/ c- Q- s( B9 G$ ?6 H
+ @$ U+ f9 ~& X/ I: S2 C. F
set unhonest-service 0
7 k, e$ \! w+ U  Q8 C2 U+ [8 _! f

- v- _9 }; J+ Y# v3 T2 d, yset oscillation 0

% i' Z4 g" T- o1 f& c# @4 {1 o
- e4 P" t! J7 r+ mset rand-dynamic 0

1 C) X: A5 g3 y- ^7 ^8 ]end! H$ t( a. |$ H, M9 g, t

' f/ r4 e& T, qto setup-turtles
5 H( F, j( C3 t5 lset shape "person"8 X# m: ]$ Z  ?
setxy random-xcor random-ycor
6 \6 e5 j5 K: s7 ?- z2 Mset trade-record-one []
0 K/ ^6 X" w3 K; I. s1 z8 N

( u- w4 C) d2 l7 _set trade-record-all n-values people [(list (? + 1) 0 0)] ; B8 E8 P% q5 K( N

9 h3 S! @0 p$ |, xset trade-record-current []
' x# n4 W' H& Cset credibility-receive []
. o: x4 x+ q' xset local-reputation 0.5
( [9 {$ [" W) Q( {% q1 Nset neighbor-total 0
) m% ^- f$ i  n% E, o- ]set trade-times-total 0
9 S3 \& r" p7 Q- l) q/ ?set trade-money-total 0- Q1 t! x1 e) _4 O- G+ z
set customer nobody
, E7 L0 I, e' d: I0 pset credibility-all n-values people [creat-credibility]
$ Y' Q1 W$ p2 i! d/ uset credibility n-values people [-1]6 E  Q+ l+ |7 R& Z
get-color
( f- K0 \- G/ z: t( h/ w% Q. F3 V

! Q! g, K  Q8 B0 b" b& rend5 f5 u8 _8 H  ^' T8 E( W

4 Y! b- o& C( H/ h, Kto-report creat-credibility
0 }2 W3 A( \9 C) u$ d6 y. ~7 @  J; \9 ?report n-values people [0.5]. y- f% o5 r0 l9 J/ g
end2 ^( ^* t8 |. o: a! V. V1 I

  x* }  z2 j% e' zto setup-plots
6 p1 _. i* ~3 I
6 G, T! N  v1 _8 y& j: @set xmax 30

! S- f! q8 O0 K4 s( X9 _  {  g5 O4 H2 Y2 P& [. |
set ymax 1.0

3 R# e! ?, C9 U) M% _  H
- i/ a- G7 [+ |% yclear-all-plots

6 F, b7 d6 W1 e/ o# ?$ [/ ]) Y" a. e
9 O" y; v9 w; n7 ~9 T# }0 b3 \& Wsetup-plot1
6 t4 P. w/ Y/ P. p2 Z0 \

. Y1 k4 \! p0 ~3 B) O; }setup-plot2

4 m& s; o% C  T1 U" B/ [! ^! x" `4 n2 N2 {. F1 j1 y/ U) j
setup-plot3
5 S' A0 [) ^+ N/ [
end
" e5 ^% W7 J* \" {8 _. I  u
2 W7 d* c6 v6 H" u( b; D. ?;;run time procedures' R9 E( e: N/ ?) K# M+ F

# j5 J, d3 ?- O6 ?2 s; p9 H# }to go
0 t  y/ y% v* K' O0 ]' f4 O+ A
7 m( E; n4 ?; Nask turtles [do-business]
; U; H( W3 F0 {# G( B3 d
end6 K+ l  a( g" _$ |

& C) H" t6 Y+ N$ Y' X4 Q. Ito do-business 1 W1 K; p3 D/ s% _# G2 q  |

5 E2 [* }6 ~8 d& u  W
) J2 y; |( M( I, k7 p* ert random 360

% p: r" ~3 ^: X
& @6 Y( K' b  g/ ?$ Z- w4 A* x0 tfd 1

; Z0 }' s7 m8 K7 N( d( R$ x* X& E% C/ P
ifelse(other turtles-here != nobody)[
8 S" f6 S! K; a  ]' ?, Z& q# [8 _

( P5 u- H* P7 I3 v: i4 @  yset customer one-of other turtles-here

8 q. G, h! f6 H8 p6 h# i7 U3 U$ w* j1 V4 p9 |8 F
;; set [customer] of customer myself

- Z; }% \  K" c% M0 E" d' R# E" H, P' k' U
set [trade-record-one] of self item (([who] of customer) - 1)
- U- H% _' ~# F[trade-record-all]of self
1 e/ I0 a* S3 d5 _;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 A5 A+ G) X. R

. t: p) B+ R) x* g4 F7 gset [trade-record-one] of customer item (([who] of self) - 1)
( f' Y+ [  \' C8 {; P* S$ m/ _[trade-record-all]of customer

# Z! d. J' r# v" L; l& d7 e6 k: G
set [trade-record-one-len] of self length [trade-record-one] of self

( k2 _: N, X6 j2 \, M8 j/ h0 f9 r+ n5 U1 z8 \' c6 Q$ d
set trade-record-current( list (timer) (random money-upper-limit))
2 H4 e" @3 b$ M2 v
9 c3 ?* M# e9 w+ I' |/ s' e% C
ask self [do-trust]  J  {! w, w! n6 W
;;
先求ij的信任度
5 x# D4 P9 L5 i6 C
6 b$ J( F! W  W) ~8 mif ([trust-ok] of self): n1 u; z& p% v8 k0 k. M
;;
根据ij的信任度来决定是否与j进行交易[  B9 E/ F! i/ m: Q1 D, x
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 z& o6 H, c" p2 U

* _: I# z) i, b! Z2 @) p[

# D' T2 y6 N, x+ [  m: L3 E
, _% y2 a5 v1 ]. sdo-trade

$ i3 r" A2 \9 }: n; |# E% k1 _- Q7 q% W
update-credibility-ijl
* e; w* e; p) d# s
+ o" z' g' H& p- j8 a; S
update-credibility-list
' W2 c0 @, i( z9 C1 B& {4 V, H

4 r4 T5 `) K# n9 j# [- e" }
/ y! l4 \# ^# n& ?! i& C& Z$ nupdate-global-reputation-list
5 C8 H8 q2 a8 l( d) {
6 r1 c) b0 _' l& \" e7 i7 b
poll-class
" O  M2 E4 [: }3 x  O8 O
- y, B! U6 E* b) i4 i8 V( B
get-color

- n# J8 C5 I4 S3 m. {
( O5 p3 g& i: ?( C+ J]]
) o: C; D) x7 K  ?
: [! y: r% ^5 x2 b! w- H6 _: l% v;;
如果所得的信任度满足条件,则进行交易
9 `8 L5 q. T& m2 l; R1 ?$ O) _) \9 r1 }  n
[

4 N. C% {$ C7 E
! Z* S" }# V+ o2 q+ a+ Art random 360
- C5 R- @6 ?- m

: n- c/ f1 W9 b6 x/ T! Vfd 1
- A, A7 ~- W8 c: ]7 b
0 i" W+ |/ }6 M/ \* L
]
; w" W, r8 J+ {4 d4 m  F) [
4 o. C( ?) \" x/ D/ q# @
end
4 H, X% p+ f. r; L7 S! K5 a
# n! P0 Y9 y/ c1 W
to do-trust
8 n0 [* I& g" e7 N5 D0 `set trust-ok False2 I3 I' W- Q/ L9 V6 J# C% e

; U/ F8 L8 E$ q( C5 W6 u& Y

& V& s% o; ?3 c8 U6 |; ^0 P5 hlet max-trade-times 0
# w7 h; J* y8 e# u6 Dforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* K! \+ q4 b4 i0 k7 Y$ {% h% `6 i% U1 I
let max-trade-money 0
( I- ^6 R% ?/ L& H, J* ?) }: {foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  W7 d8 V9 s- W" l0 s2 |- l) E2 Zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 _7 `; ~" C# w! n

' D: j) S% d. A9 A$ q

2 i9 T: E6 q- J. }) Uget-global-proportion+ a$ E/ _! w9 t/ @
let trust-value; c8 o7 j- a. M/ f+ d3 `5 {
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)
( u9 @/ f, T0 D  ~
if(trust-value > trade-trust-value)
4 a2 x& `, V8 N9 ~[set trust-ok true]
3 K& q- @$ N' a$ H( l" dend* B# I: l. f9 X1 _& t- F4 j
: ?$ `! t9 ~7 F  \6 L, _1 O" w
to get-global-proportion
, n" ^3 p/ _- F" M3 S+ H" s' oifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# b8 `6 p% i0 |- J
[set global-proportion 0]
. ^- W' P# I9 I8 k8 Y2 B3 k[let i 02 M  w& o! v/ j# ]
let sum-money 0
$ H! t% u" f2 ~( xwhile[ i < people]5 Q* V6 X8 v0 H7 ?9 Z7 S8 M" j: c
[
. q" |1 f8 ~  Y7 Cif( length (item i; |$ m( z2 P/ p2 N, ~
[trade-record-all] of customer) > 3 )

8 V0 o' k: r. A' H. }[6 B( ~1 N: c, O+ s6 T- P+ d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" @2 E7 r1 P4 Y  q( e]! C9 |, W; Y' N. a7 a
]/ V, T0 v/ L4 w7 P. H! {: N
let j 06 t6 ?+ ?3 }% c$ u" ?
let note 0
  F. b4 `: N" ^: c" lwhile[ j < people]: S. X3 Y" |; F4 O$ t
[/ p6 k* d0 X" R2 T: {: V
if( length (item i* V: b/ [% B/ ]; _3 y9 d6 e3 Q
[trade-record-all] of customer) > 3 )

! J; f5 A3 l1 W/ b1 Y; g[
2 b. T! B8 C6 Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); P# x9 r8 m& _9 H& }, V7 X& a
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 o  i, Y7 }# d
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" l0 g' @, C; i8 y
]# X* b' |+ ^# O' |% Q" W
]! i5 |* }( T. s5 Z2 T3 R
set global-proportion note5 b! \( W! M! l# s0 ^+ Y
]
3 ]% @+ U' N8 |9 V) [end: |: ^2 ^7 C' m& A" \! X6 X

9 l4 I- G3 d  p! q# vto do-trade3 c, c9 }' W8 H3 X4 k$ r8 }8 D6 e
;;
这个过程实际上是给双方作出评价的过程
& ~: M* ^$ A6 j  V9 tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: E& r8 f' x; q+ _4 S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& o2 ?* j* j) U9 _/ Y
set trade-record-current lput(timer) trade-record-current
1 I$ P8 R2 o& H6 y5 D;;
评价时间
4 [2 ^+ ~- T4 L; O+ Sask myself [! \2 g8 ^( Y/ F) P* r
update-local-reputation  W1 B+ l) G. V! g' \" M: R( q! T6 c
set trade-record-current lput([local-reputation] of myself) trade-record-current
1 H% W+ j* b; d7 Z3 i]% |! }  A' M( ^, X6 H
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& c8 V9 s, O" I) i) j
;;
将此次交易的记录加入到trade-record-one
5 k. l) r( g; A7 t1 h4 X8 S8 D, g* A* Bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! D& O1 ?2 q) ^let note (item 2 trade-record-current )) p+ V" O8 f9 f6 x: B7 p* |6 t
set trade-record-current
6 b  i; z; a, d9 A6 r(replace-item 2 trade-record-current (item 3 trade-record-current))

+ a" H9 H+ G2 M9 F0 C5 s% ]5 Cset trade-record-current
1 |8 R; o- e- n(replace-item 3 trade-record-current note)# T0 X# m0 {# L: {
  d' p5 Z4 G, p' R
& L: ]! S# Z' F. d
ask customer [1 ^$ b$ d& g% L( |
update-local-reputation4 ]( \$ {  S- p: d, ~
set trade-record-current* C: H8 A: f; `- }& i: I9 I
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  I% g! S' Z3 l/ v' Z& G
]# ~/ C9 f9 s: V* U5 z, ~9 p

: i! ~6 e2 f7 s4 P7 g0 r
* S' M7 D. @" w" o! I
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, m: b: u: J; H  @0 Q
. T- L9 b' z6 m4 J5 t
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* L4 F- j/ H, s$ ]2 U
;;
将此次交易的记录加入到customertrade-record-all
* Q- I; S- I$ I5 b1 Q- fend
- e4 H. }5 }5 ~! C' ?- K8 @
4 ]8 E% D* N) T* @/ A8 l! k3 T7 F" T8 uto update-local-reputation3 c4 g% G; R: r# x$ A! I: X% M
set [trade-record-one-len] of myself length [trade-record-one] of myself. R+ B4 w. B7 o, t$ k% c

, x  y0 K2 c  ~/ D, d% p1 |
7 G# K. B- D0 g! Y  a;;if [trade-record-one-len] of myself > 3

* E+ B; j$ p' o) t& `3 \update-neighbor-total
1 U& H3 a. P' k5 y2 p: c' I;;
更新邻居节点的数目,在此进行
6 h% G: \2 x( f# r3 llet i 3. B! Q' a, I- J' N
let sum-time 0: }4 P: p3 j6 b! \: S8 G4 a
while[i < [trade-record-one-len] of myself]
4 a, t) u9 d( L7 a8 S% h4 S$ j" R[; ^9 c& h  p  n* Z  Q* |
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- K7 Q* z* j/ L. u: @set i
& r* k4 l& H7 V- ^( D( i + 1)

* n% [7 {9 Z; k]2 V, {7 u3 a  ?6 `; }
let j 3
1 {, R$ y* {; ^1 O: Blet sum-money 0
( P6 i! B9 Z  n/ l9 C& H" a0 uwhile[j < [trade-record-one-len] of myself]2 M" p3 \3 W$ f8 u( y
[
5 l4 |$ ]2 m8 \: Mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)1 c% D7 ~) i9 ]4 z( V2 u( R6 E
set j# Y# O: `# D7 s8 ^
( j + 1)

. B5 e) Y* C6 O# A( V7 S% C( d]  f5 i! ~0 P- [# U, m
let k 3* W) N" S. {; ?( \
let power 0! _% @! G$ J6 D/ Q# v
let local 01 V4 Y0 Q0 K1 t5 J# _) ^
while [k <[trade-record-one-len] of myself]
3 k( ^  ~+ J$ o1 O- `[
4 }) }( O% H6 H5 B/ g) Xset 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) " K. ?4 k! k1 ?4 L- `
set k (k + 1)4 }+ A5 h* u- o: S  ?
]7 I0 `' u9 a2 B6 X
set [local-reputation] of myself (local)% [- h; M! T7 B: \% S+ P
end
8 r+ \; a$ G4 `9 A" _5 r7 b- i  z- X4 v* B$ m, \$ K1 k# }
to update-neighbor-total
+ {& O& C' n1 a, v% q& L6 i/ U5 D) E4 u: O. j9 _. q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* q% Y0 M$ m% f' }
: n& p: Z! Z2 Q/ A! g

. ?+ D0 c8 W+ r4 ^3 {. Iend
, D# @% z0 ^2 M
( l3 S, T0 i( E2 \' R  Ato update-credibility-ijl 7 A# m. a6 H9 G1 u

3 Y' i) r; _% i. v5 l" u;;
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。
- e8 X- r& p* _. L6 zlet l 0
+ `$ A$ V4 I( _7 H2 ~. q- kwhile[ l < people ]
: w9 ?3 T6 Y) g" l# U;;
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
  F* t, I2 H- J$ k' {% x% b; N( f[
5 S3 h, F- u' s+ U& [& ~6 plet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% P: M4 P) f# O0 x4 _if (trade-record-one-j-l-len > 3)
! _: ?9 C- u4 d- d! Q; p/ J[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# `2 O7 Z" f4 K, b; i! q
let i 3/ O  X4 @" W7 E% O! ~2 {) q: R0 Q
let sum-time 0
( s1 q4 R. i) |5 S7 cwhile[i < trade-record-one-len]
. Y& ?1 N! g6 V7 j$ t[
" K' W. T7 d! g8 ]( Z) G4 Jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 c, \4 N. W2 h) W4 v0 c7 |# k5 a  ]set i3 G8 T" k7 w) H3 N& J- U! o
( i + 1)
# @+ O$ G7 D. M& ~7 y
]) D3 ?1 `& }8 _. n' r
let credibility-i-j-l 0
1 T5 L% |: @1 Z2 f+ Q;;i
评价(jjl的评价)
8 k% x  d7 I) l( j# Clet j 3
. N/ q6 S- F" M( R% G/ ?let k 4, o) D1 n4 E) K/ q# G* F, c1 g
while[j < trade-record-one-len]% v* \% M; x" ]3 M: L+ d3 M
[
; W  I6 V, V% b8 ~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
- h# y. H" f: dset 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)
- `7 w1 d+ i, N" p4 z# i1 Jset j
0 J  m; S) _) Z( W+ j0 c! [( j + 1)

6 P/ v( _# t* u; d$ I. E9 ^" O]
5 k' A7 v8 k* c" q# Tset [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 ))4 C- e% p6 w) O$ ^. g! G
; G8 e3 p- d* R7 J) t; y! L  z  b/ \. r
' i8 q  {4 t( ]* M& x7 @' ]
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! s0 U' T" G* a( h# S: D2 y, {
;;
及时更新il的评价质量的评价
* ^- @+ ]0 x: h+ [% w6 D1 I; gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 \; }* J5 n( s& a- lset l (l + 1)
4 O9 x+ {5 N6 m, ?]: S' p( e) U0 H
end
0 ~% o7 }9 h& T0 u  O* h- v( [) m
1 K2 l1 X: z8 s0 Cto update-credibility-list
4 j4 E+ `- f) S# n3 Xlet i 0
2 v1 o* \1 R# _# S9 ~while[i < people]# k& S9 K3 F& N# X8 h$ ~: }: ?
[
1 N/ L+ H3 z6 I0 H* Q  j* M! D! X2 [let j 02 k7 q2 z  f9 s
let note 08 v( N' t; r' ?. M! t
let k 0
. n! M$ V+ ~" L; o1 E" c;;
计作出过评价的邻居节点的数目
! y  X9 _# \+ Y& P' uwhile[j < people]+ n8 h% f; F! b) p
[
" m- u& c0 c! \' k& y# I, Mif (item j( [credibility] of turtle (i + 1)) != -1)
: J! c1 J# r3 B# u9 z;;
判断是否给本turtle的评价质量做出过评价的节点9 d) f2 B1 @( S" B3 F  Z
[set note (note + item j ([credibility]of turtle (i + 1)))8 C* _( g. A8 Z- ?
;;*(exp (-(people - 2)))/(people - 2))]
5 y0 T9 Q( `3 D2 q+ K: ]
set k (k + 1)) _) S$ O" |. m1 ?, @
], r8 U+ g# j" V' q7 \
set j (j + 1)( r0 q0 X3 Y5 J- D* q; N, O8 Q* }
]: J& G& h5 c; q: N* T. D+ _6 a- ^% O
set note (note *(exp (- (1 / k)))/ k). \+ \- w, Y( o) t' G+ D
set credibility-list (replace-item i credibility-list note)7 G2 d7 H4 U, i6 I. d: N
set i (i + 1)
5 R1 K7 b; n* s$ T, }6 B]* _6 C! f5 u; j  {/ {/ X
end
* K4 w5 j% w; v) _! ]& z: y5 J5 j. t# o0 k; Y* X: T$ q9 N$ f
to update-global-reputation-list' }1 c% v: Q. d. b) i' X
let j 0) x, K4 ~/ G) o4 D3 B
while[j < people]2 V; c+ _  S8 b. W  J
[
: f) O( R5 q$ w0 y% ?; }let new 08 W3 H+ K2 C, c, J
;;
暂存新的一个全局声誉9 a) ?( K$ v) }' ~
let i 0) D/ B* H0 H0 G4 d2 \$ K2 e8 P
let sum-money 0
3 z' E4 D) X* D2 H/ L; A$ C. ]/ Vlet credibility-money 0
& A5 ]" H% ?! y- }while [i < people]* h5 e3 H: ?* ^# I; r* I9 K4 D+ ?
[  x  j. ^! T# P, L9 F
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); q$ P( b, M& p+ n5 d
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 R9 G, u# N* e: _, W
set i (i + 1)
( T' _- D5 `6 R]
& d" ~  I  r6 @let k 0
5 g/ q- w: V7 C8 C& tlet new1 0& J1 s5 K$ K1 U7 t; H5 g- |- K1 ]
while [k < people]
/ Y4 Q+ O2 Y3 [1 }0 F' j4 t4 ?) k& k[
9 @. h* y+ _7 D# p& H: K6 [4 aset 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)
* d% Y2 I' |! vset k (k + 1); l5 `) S# {3 g, B
]
! _) f. e2 G, b$ l3 Yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 ]4 |* r: ~1 n9 T7 ^5 L
set global-reputation-list (replace-item j global-reputation-list new)6 G( X2 k$ @' K4 P
set j (j + 1)( ~' V/ C- u" H: v2 A5 ?% Z" g9 u3 W
]
% F2 \0 R  E  \) F9 p8 `+ [end
, r# n4 @5 s: ?& i" u& |" h6 M- L: i' j

: g, H, {, W. Y  Y5 @: ?; I6 c7 o4 K. p1 \* X- `# H
to get-color8 q( \7 }' B6 S6 ?

5 c, ?. _. X4 G2 S9 Z* ~+ }" Z) Gset color blue
7 T8 Q9 R3 W5 T$ H3 R2 T4 s  l
end- k. [' {% F9 K( q& C7 t) C4 i
% B. d6 o9 x/ Y, v* _
to poll-class8 R9 T* |- ], Y: u- U( r# Y, o
end
4 W0 ~* [3 z7 X; y. Y! A8 V/ t, B. A9 |% y$ O. O
to setup-plot1
9 C4 e) y) D9 v: P, O3 ?- s/ z) T4 o! I/ U
set-current-plot "Trends-of-Local-reputation"

( U5 M! ]1 d7 U
  Q. I1 h2 H* ?+ aset-plot-x-range 0 xmax
2 S( @$ w. `; A* e* [

  S% R3 d6 k' \% t7 n. nset-plot-y-range 0.0 ymax
+ ^2 }/ R, @3 W# Y, D3 r
end
, [# t! b. h  ?7 a2 d0 U' d, b& |, o( z6 U
to setup-plot2
; K9 [1 T/ r/ C5 |8 Z/ R
% H: d, h) N( p5 P% kset-current-plot "Trends-of-global-reputation"
/ Q  P; d- p& n
& g9 g' b9 H9 ^5 z$ f& `
set-plot-x-range 0 xmax

$ N- @8 |1 y& T8 r; |( Z5 @
2 e+ z& G7 m# v% _3 [5 p; {+ nset-plot-y-range 0.0 ymax
& W2 {! M& d2 `
end
, O. R8 W! j! A! K4 t7 T# g4 \4 P5 ~9 [/ m& V; z, [
to setup-plot3
; q$ d+ I: {  X9 x' W
) o- Q" W! ~/ z0 A% I' b/ ?8 qset-current-plot "Trends-of-credibility"
: |; q- d) J( V' K6 b' D

7 o+ H2 o$ K* i- g8 u" |set-plot-x-range 0 xmax
0 y. U; l, Z/ P  ?$ e/ z# `0 s2 g* ?

6 Y/ \) h) d! `0 ?2 u* ]/ Cset-plot-y-range 0.0 ymax
6 b7 N2 D4 d8 q; a
end
% `6 ^5 G% C/ f% O
0 u+ I! N! u; r- n9 }0 Vto do-plots" w: a. T; b5 \0 n% h
set-current-plot "Trends-of-Local-reputation"' j! f* M; f) w- k+ @* s1 \0 x
set-current-plot-pen "Honest service"
8 N' O# f0 y! H4 ?" `end6 R7 h2 T+ \- ]8 I  v  F

( g- x- D7 ?' |& V. t[ 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.
4 A6 w2 a/ }% M5 Y* x& ^# G4 W3 C" d; m: h0 X0 N
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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