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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:
6 T; L: B: O) P3 w6 _to do-business + S) r) ]1 t, @# t* V4 r
rt random 360
1 ]. B% _4 n% p fd 1) L+ \# b& I& B& d- k
ifelse(other turtles-here != nobody)[+ @3 V# n" \8 D/ 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.
+ s/ a& y! F* O  L+ [0 m2 o' x% Y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# Z2 j/ N; C" d# b2 C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; @+ D8 f& a. J3 G6 m) P) O
   set [trade-record-one-len] of self length [trade-record-one] of self
3 R% K. t+ u9 ~" h8 J# U6 P   set trade-record-current( list (timer) (random money-upper-limit))+ v. V3 e' H8 d' z: [0 T" w$ `

6 K9 y; ~5 q$ y3 l/ f1 U问题的提示如下:% U8 a" z# n1 |/ L6 k3 u
8 L& }5 }5 e& N; ^
error while turtle 50 running OF in procedure DO-BUSINESS6 L3 M3 }7 F# `7 Z& c# r* I
  called by procedure GO
1 {! ?9 g) `+ M4 M$ v9 DOF expected input to be a turtle agentset or turtle but got NOBODY instead./ @( W0 T' V( e3 m0 E; \
(halted running of go)
: C2 H6 q! i1 Q9 V( Q
! b$ ~" k2 E, e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~~
: k$ @" C9 A$ e! d& F' l! E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
# _7 h$ E- L: X5 X" Oglobals[
; r) R- g. b' T' g) G" Q2 T6 s4 dxmax
) P+ G9 ?: b" r, J9 J3 ^ymax1 m1 S/ k- `2 Q( O
global-reputation-list
5 |( p+ _; f; D  w4 C4 g( Q, M0 @/ f  }8 z# b, y6 I
;;
每一个turtle的全局声誉都存在此LIST; A' L" N  _! R) \* W
credibility-list
5 f3 z7 K, v% s9 n% H; V5 ?7 n4 T;;
每一个turtle的评价可信度; g  _: Q$ `! h$ A7 c2 x3 y. ~
honest-service+ k. F, m2 C8 ]6 J7 t7 S
unhonest-service
- g# l  \* T1 roscillation
6 o( _0 y! g& L9 a8 U* f1 Krand-dynamic0 ^* g- o5 w& \
]! H% s- r, p* H6 T1 V+ ]0 D

0 O0 z, ^+ X. k( xturtles-own[$ |: q' D9 L9 `, A2 c5 {& F. E
trade-record-all
' |2 R8 L5 [& Y6 h& s2 I) O;;a list of lists,
trade-record-one组成- c# t* [1 Q$ V+ C, C
trade-record-one$ Z# {8 y0 a" {; U' Z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录4 w! D% K; F, d+ d# R7 J

8 f# v0 ~' p! N" H;;[
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]]9 j& z2 m  P8 k1 [& [
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]
2 \. h2 m; _  L. t! `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% L' o# z# E0 H8 a! ~
neighbor-total5 h3 g- u9 ]5 y7 V9 Y
;;
记录该turtle的邻居节点的数目' {" B/ q- J' P' c9 ^) f9 g2 d! h1 {
trade-time
( Y4 w+ O" Q2 Y, J;;
当前发生交易的turtle的交易时间
! w. R) a* x8 C" C; nappraise-give2 x: l# _' `& Y* t! C9 n4 _
;;
当前发生交易时给出的评价
( |* C  l9 A6 L! D7 Yappraise-receive& @' i* E7 i8 A8 J
;;
当前发生交易时收到的评价
2 x4 n. J% u! A5 jappraise-time9 T- G% O% ^& t2 C# V
;;
当前发生交易时的评价时间+ ?+ {6 c2 n; w" h+ `: ?1 c0 i  C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 e  h. G) |% S% S: q2 k9 ytrade-times-total. B* ]+ C5 @4 w+ |
;;
与当前turtle的交易总次数# |* m) [) E& y; j# ]
trade-money-total
$ K/ X, E# E7 v( o; ]$ h;;
与当前turtle的交易总金额
# _5 u% c( G' `& I" klocal-reputation
1 A& r$ i4 I: @7 E6 p( Mglobal-reputation5 J0 C) S4 Z: {# E; H# r
credibility1 P2 _4 c, C5 }" X4 ]+ ~
;;
评价可信度,每次交易后都需要更新: B* f; l/ i0 u5 z7 j  k5 ]
credibility-all
* P; S9 f2 R! Q0 O3 b$ {;;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2 m, _6 y) C8 U. i( a, x4 Q: r' I7 f

6 [+ m. v" d- n* s+ O. ~  X;;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: C. I5 n4 \* M
credibility-one: n( a* A2 @) Z  C1 r  y
;;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* _0 @7 l. I) ^9 M# ^6 Z$ B
global-proportion
: F* X+ ^+ r$ ^- ~customer1 X0 x) d( \  ]- M" P4 ~
customer-no5 q4 j; j! K; p' A5 U% v
trust-ok/ N0 ~! c) d: N2 \( P7 m5 @# D
trade-record-one-len;;trade-record-one的长度
) }0 E5 D: @  g# }6 M]( p6 C) f/ [! ?
- U' P) F9 i+ W; A
;;setup procedure
  N3 d! c+ U0 @; j: e: @, G7 ~' p+ Y; q
to setup
1 @- o$ \* S! t4 ]  P0 K2 N; O
. Z! M1 K* Z( A& K( X" {ca

, q5 E# h; v4 U9 O" S  y' f% E* G* T* t
initialize-settings

9 e8 `1 j& ~' h" l: M3 M$ l; u1 [- ~; N/ N: P
crt people [setup-turtles]
" N( M; f3 a# \& Y2 }% Z. x' A) j( ~
* ~1 |7 [- _; K- A& u
reset-timer

% W) k0 m4 R1 [: X  P9 _! P# f+ T0 m9 S- _. W2 [4 t; S+ }" r5 z; l
poll-class

+ ~" u1 F' B0 u2 H# e  f0 W: j# k+ q) i; p5 N& ?2 Z& k- S1 e. ~  Q
setup-plots
  b" ?! m( R" W

+ B: r. f, D+ _* Ido-plots
5 D) k8 y2 N# l
end2 C( [7 C/ v; n: F. a' \
0 k! P/ B: M8 H2 N) {
to initialize-settings5 A/ S$ x3 O! V* b
, p9 G* A& l' N( k
set global-reputation-list []
' }8 O- `' W- S9 P

+ C1 O8 i  S$ sset credibility-list n-values people [0.5]

: |  \- d6 N7 s: k
9 n  j; Z8 H1 y- W6 G: lset honest-service 0
  o7 ~$ n1 O8 E) O6 Q5 d

+ z. n2 B2 T' ^3 E/ L2 s8 kset unhonest-service 0
% E& R0 f2 T/ x

; I& }" D6 j' o7 z& B& p: g5 y* Pset oscillation 0
2 P; N: p: ]$ Z' n
1 Y& a' D1 n% p1 R* z( I
set rand-dynamic 0

+ a' P' c! Q3 {6 k: @0 ^( j# ^8 Qend
# ~+ d; Z0 N# @7 _4 u  f7 N% Q" D' Z9 F9 u
to setup-turtles $ P" R( ?3 l( p" x# d
set shape "person"5 s# K5 }2 x: N9 z
setxy random-xcor random-ycor
6 ?# s- k- T1 n" j8 Y8 Zset trade-record-one []6 F: B& K& V" r5 j) C( v! G  M

: E2 [3 N3 f0 |* \9 ]  M. vset trade-record-all n-values people [(list (? + 1) 0 0)]
4 h0 u! b  g! }. Z/ I) S6 I9 W) K

  z+ C) p0 p3 B- k. v/ `set trade-record-current []# z" ^( |; U& a2 M  l
set credibility-receive []2 N% a4 A2 F  B0 q, Q3 \
set local-reputation 0.5) I( X* n& k0 k- h' t8 u+ A7 ?
set neighbor-total 0
# r# R; k/ b2 c& Y! G; L; T7 S  cset trade-times-total 06 c4 R7 E. V9 k* h( F0 g
set trade-money-total 0
0 x% S# z/ f% f) W: ?set customer nobody
% h0 A5 f3 q. @+ ^$ ]- V, Vset credibility-all n-values people [creat-credibility]  j* l! \- D. y! P- L
set credibility n-values people [-1]) K) r0 @+ R9 [0 o; u6 {5 X& w- f0 Y
get-color1 v9 G- D9 w4 ]9 v$ p( o4 ^3 F

+ B! z) D$ i0 b: Jend# o* }$ M5 }: `  g- ?* ^  o

  Z$ I2 v- \: F& r) t2 R" q7 ~- Yto-report creat-credibility
  f' a: M  A: X9 breport n-values people [0.5]
4 J4 L) I: q9 K" n2 e. Oend
( }  e: W, ^2 A, W+ {* p' s1 e3 C# O
to setup-plots
$ {9 \1 I. d2 j- ]
5 e# w& h5 ?+ M, zset xmax 30

- H8 h8 A# _3 t: ~/ O7 q( {# I! F2 z, `. J+ u; v
set ymax 1.0

+ U1 Q, _' ^5 r5 r& F
3 a2 E3 m7 H, O4 Z, ]5 c% e' mclear-all-plots
  e6 d; ?. p, \$ k
3 j% B/ G4 F+ ^
setup-plot1
6 J# H0 x; H4 y: l# W

0 `9 |. L9 J( d, U7 O7 isetup-plot2
2 w4 h6 P6 v: I* I. f% S

( B/ t) {1 l0 M. I, h7 Z; {* u0 ~setup-plot3

: ]8 D: T; x) G) x+ fend" x8 \" _7 |: L/ ?( }

" A3 f7 B& e2 k$ o( I& w' W; |;;run time procedures
. G% l! _9 i& _1 ?( Y' C0 E3 I9 v9 Q/ c8 X
to go7 i$ o# D! E; ~6 a* E# l6 Y/ |) T
9 w4 E0 i8 @3 D2 h4 A1 z+ L# y
ask turtles [do-business]

9 A  I' @! n. k0 c+ Bend( L  z5 `  X8 T' c1 U
2 a1 }  |2 o# i7 V: Z2 P$ Q$ Q9 ^
to do-business
- D  I( T3 y4 G0 ?+ T3 f# _

2 F$ r6 k% n  X4 H3 j% y* R, n. E8 P
rt random 360
+ ?4 y& F, G4 S

8 C. ]. {& P2 E( d% sfd 1

  h1 G' O/ G' Y5 D" H. l5 V  M
& l: w- P* |; f9 g: cifelse(other turtles-here != nobody)[
2 {+ |* W; {5 t/ [% `. D

7 f' l. @: B* w& t9 u( C' mset customer one-of other turtles-here

# g" K' s1 s9 a3 O2 y# l
; ~! m1 h/ T' m! n;; set [customer] of customer myself
  l/ @1 t! Z& G* m5 T
1 ?2 j! b  I4 ]9 `1 D( U8 q
set [trade-record-one] of self item (([who] of customer) - 1)7 ]; W5 W& l7 N  H5 i! a
[trade-record-all]of self
, C: H$ C! E, h;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* d2 C, x. ?/ {; a

5 ~# G+ F4 k) `set [trade-record-one] of customer item (([who] of self) - 1)7 h  I$ H- ?$ ?% M+ x# x3 R$ ]
[trade-record-all]of customer

8 c. @* }8 {  Q, j' r' R
# v5 C1 y  G" N9 p3 f6 s  V0 p( Uset [trade-record-one-len] of self length [trade-record-one] of self

; o" S- _! O+ y' [9 ~2 ]7 }% |. K& c5 ], W+ y( O+ D; V) f6 _8 k
set trade-record-current( list (timer) (random money-upper-limit))

' t, a+ ?- W; Z. E$ @7 b0 R& O( w
ask self [do-trust]
3 h2 ~5 X: T& z% D! ^! |;;
先求ij的信任度
9 B$ a( g: b7 g! D% \8 d
) l5 X; E* h6 ~( V) S- _if ([trust-ok] of self)
0 P# N/ |1 P( Z3 W;;
根据ij的信任度来决定是否与j进行交易[# G/ d$ \1 X* q. ?+ j+ h& ^3 ?
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ p, D) z- S5 L" O. W6 C; l

) W. p! j8 H1 `, m2 ]+ x* \0 {[
! H% f4 b* I( y( x, _! b! D
0 O. J. s+ w" I8 L0 r; j2 E# r
do-trade

  R+ u6 ^9 p5 H% L, o+ e2 N1 r, S/ M! i6 d
update-credibility-ijl

' ~+ E0 g0 W) j9 B) z. w; ?
5 j0 Y' d) N% w! E* ?. Supdate-credibility-list$ y% r3 P8 w" X; P/ k" T' _
/ c/ B- C# {# l& O' ?" Y
( m# S5 R% m4 m" E9 L' y1 G# g+ p
update-global-reputation-list

$ J& \  u! J3 j( o# v" S2 d6 U; a, s. W" @4 D( F4 ]
poll-class
7 y5 @7 A6 a7 F+ N5 w& \4 S; k
: l2 T$ K1 j+ m5 o1 e% V
get-color
* Q9 U  M/ P# m  D

+ _) t; O9 M1 B  [3 D0 w* d]]) C; E$ q" |- Z, N/ r5 r7 I

% B# {3 j7 t& Q) s& g6 D;;
如果所得的信任度满足条件,则进行交易% f2 n8 P5 Y! F- e

, Q1 D- {( Q! v[

* {& x/ K  ?( L( C
" t+ ~7 Z% ~! I: S  O( r/ urt random 360
/ Y5 ~5 ]) h5 J9 m0 R) K+ M) d& y% q, R

5 m$ f$ }) v' M5 B6 ?+ D# D; xfd 1
, @+ R* S7 B9 X, V3 K0 \7 P
% f: ?$ Z0 ^; R( W+ C
]

8 x* S6 \$ a4 Z5 y" e* l& E
, l  C& M6 H" gend
: m7 K5 b- ^% s  j
: P3 i7 c$ k* C$ S1 A. _/ V4 ?
to do-trust - t7 b8 K) b8 `3 i, a
set trust-ok False' o2 k& @1 n& H8 b9 q, t# F3 j
. N) H6 x5 G/ W) P
7 \" ^2 C! n9 R/ n
let max-trade-times 0
! Q; c! s: f$ B; Oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* \# |! B2 W5 L7 g$ A# O' ]- Z+ o
let max-trade-money 0: m- A+ @, f$ A0 E" z% Y! S5 G: w
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 }! ], P1 i8 d. t6 t3 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))( Y; B+ D) Q! |2 s& u

; f+ v9 N9 w# M2 a1 ?6 P6 O3 E

: \6 ?2 u5 h9 y1 kget-global-proportion
! @/ @  K" X' a% hlet trust-value! q( f9 r7 D+ g" ]
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)

" L3 i- t2 @, Nif(trust-value > trade-trust-value)7 C% g. n8 v, T! [4 r0 @
[set trust-ok true]
! x7 u* @$ {/ Eend
* t( z+ }" e. u, {) A! ^
8 m$ M% {# I6 @2 D* G$ }) F9 T  Wto get-global-proportion8 q& L/ L  X" Z: j; C" O
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
) W; K6 i0 g  @0 p[set global-proportion 0]
: X1 w# p: D' v* z[let i 0( W( [4 g0 ?0 w- {  f7 _
let sum-money 0
& P+ j- [' \1 }( v9 j, @while[ i < people]
3 Y  d: a( S' |% p2 k0 c4 I[
4 c- E5 z2 s- f4 K% Cif( length (item i" X4 i! c9 n' p) k$ o8 a2 o  u% X
[trade-record-all] of customer) > 3 )
3 p7 a' i1 X1 U/ j+ ]9 G' S* E
[/ a7 j' _; E% H* d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)). B6 C/ X1 B2 ~- E0 j- W
]
  ?: i+ [4 Y+ S& M" t0 B1 j]1 B6 g* w& N; k8 ]
let j 00 z6 r3 J+ i3 z/ ]( K( l& N0 B4 S+ G
let note 0$ G2 _7 {$ N7 b3 w
while[ j < people]
% P1 o% s# ]# z) U[
2 l( @% d( I; H7 Yif( length (item i
6 d! w: T$ M9 V+ c[trade-record-all] of customer) > 3 )

5 {! U' C. M8 ]3 L' X4 s[
+ C- [4 x# A& D& W) o9 w- r9 l) `ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ H- Q; _  D9 F$ V8 _
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 g; X6 `/ j& T0 L! {& G7 ~[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% i" [' }' ?% z# t2 Z
]
7 f0 }5 [! `# C6 E2 u$ }; h]9 H( ]5 S6 q6 y3 A
set global-proportion note5 D9 E+ m/ a& B8 S
]
8 F1 z: n8 R8 i& jend
) Z& j, P0 e; y2 s  ]6 f$ U
1 A9 R: M$ P9 _' o/ k' |( Lto do-trade
; U$ T; x5 q2 v;;
这个过程实际上是给双方作出评价的过程
* j2 |* t, P% U6 m, B/ o$ gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& U- L2 I# m$ H3 b+ m3 v" Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% X) M7 l4 f* x: }1 d+ ^set trade-record-current lput(timer) trade-record-current
! `5 q1 f' R2 F: S  o;;
评价时间# \& o( D* h0 C2 Y- ?
ask myself [3 c7 u  C: t2 S/ n1 u' ]
update-local-reputation
% ?+ \2 ]3 \" l$ p2 ~set trade-record-current lput([local-reputation] of myself) trade-record-current
# n$ n: U3 U  T5 P2 f  K1 Y$ V9 f]9 o! J+ B, q' F2 N1 `
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 |9 E: l4 y, `! `9 U- r2 X, w2 Q1 U
;;
将此次交易的记录加入到trade-record-one
( J6 s/ \- j3 ]) mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% ?# u& [' D) ]- Z: a1 {3 E
let note (item 2 trade-record-current )) r0 U6 w4 d. m& r! L/ u& ^
set trade-record-current$ C& @4 a0 R8 E7 C+ w9 G  R
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 J5 D9 n  S- p0 W% s
set trade-record-current3 H) A' P4 g' r/ d/ e
(replace-item 3 trade-record-current note)
, I1 U( [) s6 H5 {* c' U: X7 b" Y
) P& I% ^- Z5 u5 j+ ]
: L' ^3 A# K* b# `9 v# W$ H
ask customer [" L7 C6 Z) B8 Q* n7 l- l0 i5 b6 k
update-local-reputation1 m/ r7 e/ E# w9 ?$ u
set trade-record-current$ \0 ?* s1 ~. C! o7 j" D
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 l) ^# v5 Q+ |/ H, V8 L]3 r5 _2 W# ?+ A3 m% S4 }- S
& z8 O/ p& m: ]" O; @

% g) @" Z* b5 f! n! k( Sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( y' [4 L3 _- a% I$ Z& D1 w
" w; _3 @9 h$ f6 ^
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 l  [: u8 w% x1 R3 \) ];;
将此次交易的记录加入到customertrade-record-all. i* C: ^) Q% o  P7 A+ j
end
% V# s5 I- Z2 K! |2 M$ s9 L8 \& v4 j- Y5 R8 u  D
to update-local-reputation/ K6 `! B* j5 X
set [trade-record-one-len] of myself length [trade-record-one] of myself
& k- B8 ]0 q- O9 u+ A5 O0 W! b- a% E# M

3 D; s  L* c( {4 T) \) D! B& q;;if [trade-record-one-len] of myself > 3

* d( c$ h' {& Gupdate-neighbor-total
6 N: u/ m5 ~/ J2 f5 ?( k;;
更新邻居节点的数目,在此进行9 x1 m5 c; q7 T* c
let i 3
* U2 G* _2 j+ Z4 n* Y. v. t" llet sum-time 0
/ j) E  Q1 i) V1 _( A6 owhile[i < [trade-record-one-len] of myself]
7 ~9 ?" ~7 N  i$ p& e[
5 U" t/ ?% j6 wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 b7 r% Y) H! Q# g2 P% C5 d3 B% \
set i7 ]/ j- {, T/ V1 H8 O+ c
( i + 1)
3 W2 v) |2 W8 H- @+ k
]( l$ n; c5 R- y8 |* m0 C
let j 3/ J/ u- \6 G; _$ l
let sum-money 0; c- i. b. z, V# t* T' F4 n% o* w
while[j < [trade-record-one-len] of myself]) H0 M. z/ ?* O5 Z
[
9 w" X+ ~+ x! Gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)) p' z  p+ c; b, j; M6 X! z, l7 o
set j- p  x& _" ]! o/ `" g0 B
( j + 1)

$ D' P" L  N6 P; [1 o]
: }3 C+ U& n' d# F% nlet k 3; k2 D2 M# o# I' Y2 c1 f0 @
let power 0/ Z9 ]; r9 D8 ~2 a; U  u: x
let local 02 W4 e" X' i3 i, H- `  ^0 c, j
while [k <[trade-record-one-len] of myself]
1 D* s( A& ^, r/ d. ^6 u8 r[) S' z8 F/ Q7 @: {  i( \
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) & N1 x4 H, I# P" L
set k (k + 1)
6 Q' D3 N2 m+ E9 []
& {" e+ h! d; R; z4 C9 Fset [local-reputation] of myself (local)
* w, P  b! h; V- G  ]end
" Y: T8 |% W3 ~& P1 A" f& T3 t8 p
' f" g, f. V4 Q( K/ b8 S  Vto update-neighbor-total, M. C& O  C# W- n
9 O( N; ]1 E1 @3 [8 f
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. G- u: G, V4 G* f
- W% `1 L7 A2 r

6 Z% m" h1 l' h9 f' v$ mend* [& f: a( \# T/ k
/ G) i4 e3 _2 T% z
to update-credibility-ijl
0 @! P* h( y: f# X3 f0 I7 _! T0 }. x! ?
;;
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。
* @2 P, j/ R0 h6 n- }' ^( {( jlet l 07 f8 j# D- {' `: d& x+ f# K, K
while[ l < people ]2 J3 A! Z( U$ P) {( |
;;
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3 c$ t: R3 m* @5 f2 ?3 p
[. T) a) \) o' X2 T  e7 S
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- l0 L% x9 T7 ?5 Y3 _if (trade-record-one-j-l-len > 3)
! {: h8 w7 a+ v* o& g[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-one9 v% D/ z  k  J' y: ^$ k
let i 3
, D& Q0 l# S1 X. o0 T% p3 R* a! Ylet sum-time 0
- Y0 W2 l- d* y' ^  A: z+ Jwhile[i < trade-record-one-len]( j  c8 `- _' Y; w6 h" ^& Y. M
[. Z) S5 j* ]2 m; P: x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' V" L5 l% C* F8 }7 x
set i
6 k; J) @' |+ W! P- `# @7 ]) D( i + 1)

' {; o3 e% l! a$ H]1 ?3 P, V3 j( z6 }5 K- j
let credibility-i-j-l 0
, s+ ]3 K8 a( i0 t% V0 b  R8 Q;;i
评价(jjl的评价)( |; N" M6 ?/ w. t1 U' k
let j 3, v, P! h, [& H: |3 n$ t: C/ O* I/ L" ^
let k 4
& ^! ?% S4 R8 Y/ wwhile[j < trade-record-one-len]5 F# z' c8 @/ J: d
[
! ~( b" S. d" n% owhile [((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
+ |8 z/ O5 ~" [) U+ q' m3 Qset 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 Y. N3 R) l: ]. e9 kset j2 A- o" x9 x: r' V  M0 i- Z
( j + 1)

9 o8 ~; i$ J1 n]
3 _+ J. K$ U+ \2 e, 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 ))
- I3 F) [' M# f$ |( e0 B% F4 ?$ i6 i6 S5 p- _

% g# q1 n1 F! \" V2 Ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 c8 g! X, a; C+ E7 m1 h;;
及时更新il的评价质量的评价6 q2 q- [9 s8 |. z: x7 e, d
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" H& l/ Z5 |( Vset l (l + 1)
! ?6 X+ G( s5 \7 U* W  Y# J]
) }+ A- y; `6 \2 p* h, rend7 D# D7 u; l$ k
' B/ R0 T6 }" q1 D9 U
to update-credibility-list" g: x: ^! ^. e# K8 V
let i 0- W+ D: D& O5 ]# j/ U* z9 q8 n
while[i < people]
4 B4 _1 ^. T$ V+ e5 e[6 [' F+ j' W6 j( U, |
let j 0
1 L1 }' E. h3 U" D/ flet note 0
& d3 G) m$ n$ R& Llet k 02 |6 ~, c9 n- j- m. I* m
;;
计作出过评价的邻居节点的数目
2 K( X1 n& e* M! T. U/ Q& {while[j < people]
3 @' I! C3 U2 z# F7 j[1 q  o5 V, [; i+ l% s' l- t
if (item j( [credibility] of turtle (i + 1)) != -1)
1 Q! }0 \2 M( A" a4 Z% N4 `/ g" l0 x;;
判断是否给本turtle的评价质量做出过评价的节点$ q8 b, y+ d/ ]$ E) W0 B) c
[set note (note + item j ([credibility]of turtle (i + 1)))! c5 e# K" @4 j( m. K2 P3 D
;;*(exp (-(people - 2)))/(people - 2))]
! c; w# ~* ~8 _2 [
set k (k + 1)
5 w- |" J4 s7 Q]: E3 _- f, U* l8 w+ H! u$ f
set j (j + 1); q' u2 H3 q" u: M
]
3 h. y$ C& ?6 h  h+ rset note (note *(exp (- (1 / k)))/ k)! R1 G8 O0 T/ J% s0 \- X
set credibility-list (replace-item i credibility-list note)3 ]* f. l4 |  C
set i (i + 1)
1 x' z1 k# R; B5 v; Y]
- S# n% H& A5 [+ G) r* |' ~end3 n  Q# N" @2 N" Z2 h3 G2 J# s
* [3 X- I. k; w& y- A( O
to update-global-reputation-list* E3 b+ m/ ~( P( c3 K& J- O
let j 0
2 y' u8 T6 ]6 B  k" @# ywhile[j < people], V2 T6 ^8 f* f: ~" E7 M
[" G/ f1 \  r$ H( _; k+ }2 f
let new 07 l9 `: w' e5 q: p. e
;;
暂存新的一个全局声誉' @" @$ H* Q! ?* J% d2 h* ~
let i 0
4 |0 c5 [& \' }1 i: s& ]: o8 {let sum-money 0
( K& t% s* ?/ t& ~- T' e' x6 {5 Plet credibility-money 0
% S! _. R8 _2 A+ y& ?7 q! fwhile [i < people]
2 T2 z" s8 m. ]0 o8 O8 \% I[: y/ K( q% M& v0 j4 t
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# E+ Y. H9 {" m# H/ {( }6 K; L  B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% g. y4 Q: ]( }9 `set i (i + 1)6 `% z: v. X$ A' o- t$ b
]
* I* e. G: w. N5 ^. {+ hlet k 07 M6 D# F( o! z: d
let new1 0. F( {' r0 o7 y- a+ ?6 N
while [k < people]
- E8 a" R# {1 q/ p# J[1 m1 f/ |. p& V% C
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)1 [+ q% R* ~% h+ t4 i* Q
set k (k + 1)0 w$ ~, X7 n, V9 ~; P) d
]
' ^: }9 v5 a% s2 \" Dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ P+ J. O  @. R& A7 |, k& o& }set global-reputation-list (replace-item j global-reputation-list new)' q6 k$ r$ _: V
set j (j + 1)
! Q4 t/ U5 u- l! M+ y1 I]
( @5 u7 d/ c9 b" O5 v; @- w( M5 eend4 ?- O9 Y% |/ j4 [
  ^2 A, I0 j) A% G, X7 m2 ~

% l9 w' k) m" ^: X$ l" ~  |8 h, W: D
to get-color. U. j2 ]  y3 ~8 c! g1 n
9 K8 r, k& x( d0 R7 T- h- R
set color blue

2 H+ R) T% M; h8 Hend! [3 I. n5 d3 N3 O3 u5 R
5 Y1 v" ?1 |! u- ^+ E# \$ O! N, h
to poll-class
; j: b8 b$ h: q- Hend# p) ]' v4 q: w- ^8 k$ Z, g' l
, T' L. [, @$ g+ ?" P( W* e% Q
to setup-plot1
2 R& V' m! @/ Z2 \3 J, N* V) h4 X) ^- W, ]% s& h
set-current-plot "Trends-of-Local-reputation"

8 f  d% w# s, k; g. z4 Z/ c$ D4 P3 ^# J( u/ \: c: C$ N
set-plot-x-range 0 xmax
- s' P. N* u1 Z4 t- q: B7 i0 p
2 h0 f3 ]1 f6 `1 l4 x
set-plot-y-range 0.0 ymax
: d6 u& l) P2 j) |
end2 x# o3 u5 N$ H) M- L% R
( c6 Y' L2 X# D& U
to setup-plot2, k1 |: M2 B* s/ k+ {

$ U* q) j  ?2 R- g( P* Sset-current-plot "Trends-of-global-reputation"
" f. z! N/ X, ^8 c' G2 ?

& K: _2 p. q. o2 m) u" s0 d! Fset-plot-x-range 0 xmax
3 O$ ^$ {% n, S: U  y: C5 Y) W5 n
; r* t1 k: Z; h" z) R# _, Y
set-plot-y-range 0.0 ymax

1 w% \: ]1 T( q( V9 l/ Pend) B# W4 W9 J" L, z0 Y7 b/ P

; Q4 O: [5 c5 f% _3 ito setup-plot3
  ~+ I$ B# i1 W7 h8 D6 K2 Q7 [% N. P& m
set-current-plot "Trends-of-credibility"

& R) H; x# U& R) i' D
, U6 |$ \$ g9 k: X% Fset-plot-x-range 0 xmax
" N0 N5 ~8 D2 ~

- W6 F( \1 m% Z) W2 _1 L- x5 ~( Jset-plot-y-range 0.0 ymax
0 t) f0 R9 W) k; M5 R4 i$ S; f
end
8 n7 d$ z' Z6 {; f' l9 g
( W- Y- d! E" ito do-plots
9 [  L3 Y: Y* z( Mset-current-plot "Trends-of-Local-reputation"4 Z3 l$ C' c5 `: z- H7 x! w
set-current-plot-pen "Honest service"0 U; i8 B  g: a9 }
end
  I0 E3 `. d: H0 X" |( O* ]2 B& ~: ?. o, {
[ 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.
% E0 _! {$ b: [7 {9 E
' [1 Z6 h% R  B- ?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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