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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:
7 s9 D) r$ R( n  t+ E- _to do-business
7 I$ D) q3 p8 Z8 G& r6 B rt random 360
+ s: ~; Z7 D8 b2 |  I% }) i$ p fd 1% p. s8 X0 d  `3 m, Q8 c. K
ifelse(other turtles-here != nobody)[
4 t1 c) g7 F! b# ?   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.
! m* t' x% m1 m) h7 n( N, o   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 A/ v: Q% ~/ N; k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 L$ ~% w' I7 I7 ~! A3 m
   set [trade-record-one-len] of self length [trade-record-one] of self
$ r' [0 \1 S" g8 s8 `0 M6 q   set trade-record-current( list (timer) (random money-upper-limit))
/ O3 H0 d$ D" B( p2 D  ]. U, v' A3 ^5 s
问题的提示如下:  F  L8 F2 I5 e# N9 K; T

: m+ B: o; r, Y0 q0 derror while turtle 50 running OF in procedure DO-BUSINESS
, \6 W) Y; t, n, j# \. L) w  called by procedure GO
* W8 ]3 [% t# \% o7 AOF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 J" y( m$ x5 d3 r
(halted running of go)3 x2 h4 U5 A- F; \" d# L+ R3 U

9 i) z6 e6 Q: u! I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~~4 g! s& {/ f2 s  l! w
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
% g) m# C) y" M0 ~, Tglobals[
" _5 P, I  M( j; x  l4 \xmax
4 }$ b1 W" i' j. r' F* O6 jymax6 ^: N+ Q, K4 e7 }/ q; f  r
global-reputation-list$ H' Q% q7 o3 ?) X& r% S2 n

' q' i! E5 ^8 J9 |% J;;
每一个turtle的全局声誉都存在此LIST
: [  [) b* I" A9 D( Pcredibility-list
. `3 `% G  R& x5 y: h! j;;
每一个turtle的评价可信度' T0 g' T- d+ |. n9 B& r) r/ ~
honest-service' ?9 V7 g2 z6 y# q% h" l
unhonest-service: w2 n0 g/ r- d9 k4 l; x- @
oscillation& @2 J- d9 W4 ^" L* B) o' v
rand-dynamic
/ F; e5 D" q# p5 G]
+ M- @  x0 [) P0 D3 r& j( V3 d8 L5 A, U
turtles-own[3 \. m% B2 u  v" S  ^0 e2 W
trade-record-all, C# G6 g2 B* E% G
;;a list of lists,
trade-record-one组成" x" [; f- d7 \7 G
trade-record-one% p4 ^5 Q# e' `* 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2 v% i$ Z# H5 O, O# i" q( q

, |8 a/ t1 V# i5 E8 m5 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]]' ], V) D2 Q. M2 L" U5 K- c- |" J
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]" Z  `8 w* B: w0 w' U
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% b$ d5 O$ T& ~' k2 {
neighbor-total# r# z2 C6 Q* P  e. @
;;
记录该turtle的邻居节点的数目
, ?' F4 H8 L* _: e2 [trade-time
$ J8 i2 Y& P8 {/ Q' ?;;
当前发生交易的turtle的交易时间4 H+ N! V3 n  x& M& Q+ D4 F. @  r
appraise-give
$ A) K, y! {) };;
当前发生交易时给出的评价
! v) j- ]4 V! Y- |1 D7 `appraise-receive
+ k$ [" ?* Y9 L, t6 [;;
当前发生交易时收到的评价
2 l7 Z; z  r6 _1 r' S, f4 C3 kappraise-time
- _4 \! h7 {8 m( s0 |;;
当前发生交易时的评价时间
$ H: Y; o9 w/ ]/ ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
# {- S+ N% t9 `/ n  qtrade-times-total
" c9 N. r/ B7 T+ p' {- q;;
与当前turtle的交易总次数) \- J) N$ t) P; g
trade-money-total* p' U3 t! x: @# _& ^9 M
;;
与当前turtle的交易总金额
8 n; d" u, ]! m% i; A8 Nlocal-reputation/ J. G- E: }2 s$ N5 L" N
global-reputation7 [5 D3 c8 j. L6 |  `2 ?' E" b
credibility  c0 c' q! v" J& G( _  c; Z8 j
;;
评价可信度,每次交易后都需要更新4 ]0 `/ a2 H) j" I, {8 l- V
credibility-all' R/ g5 l6 _$ O1 m, w9 j6 p( y
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据* M6 H: t/ H0 a

8 E" F: Y3 h( Y- |;;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0.52 J/ q4 u* [1 N9 N9 O! |% h! o; V( j8 t
credibility-one
+ J2 b- h6 x& Z( A;;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
5 c3 }# A4 @2 Iglobal-proportion" x. R2 l  F4 W+ {- i! v/ `
customer8 ~7 e% e2 h) a
customer-no
# K  ]! T6 X& m$ etrust-ok! D& j) e1 h" c5 I) c
trade-record-one-len;;trade-record-one的长度, Z" r8 T" D6 q$ D6 q6 W
]3 R1 G0 j+ b4 G) s7 G
6 q8 _6 Q2 ^' j3 l5 e0 M
;;setup procedure3 X5 h  }6 F) c: ]8 w1 [
7 Y0 F; A, d  M
to setup
% w# {" \$ {: b. p$ |: W9 S& O. ~8 _3 O) b/ k8 n% D( M% `& Z
ca

& t6 `% ^* Z1 V  I9 H
3 S) j/ S8 Q( r. t3 U, M; `( D- D+ ^initialize-settings
+ Q7 X+ c7 b. |1 ]( l

5 p3 \6 ?3 I) T2 p7 t4 |2 Pcrt people [setup-turtles]
0 X% Q7 w( X) |9 a% T3 A

5 Z- O( h2 k& J0 Qreset-timer
& }, R$ H( }1 v9 n- d3 R! E& M

7 w  r" f0 {; O; I  ~! Vpoll-class

( R! s; R( d# W  T. @/ w' u
6 F3 e+ F! B8 A; Gsetup-plots
, M/ C  B) ?5 V0 `
# Y4 ^3 P; v6 i% w/ v  i8 U9 u
do-plots

# x$ h) N$ u. ~+ B# n$ ]0 gend7 E' g$ `. c! Q1 ?& ~

- D" G" }: e8 z+ X1 H* u% Dto initialize-settings
8 }$ \. G7 \8 Q7 i
9 d, D4 J2 o7 [2 S  g  mset global-reputation-list []
1 S7 p5 J) U, L; d/ X( G

" m7 l( t% H& T0 b5 \( [" E% d& Kset credibility-list n-values people [0.5]

" k4 G7 t! z: F4 f1 E% i3 R) ~7 y7 O! D1 v
set honest-service 0
" K/ k; B+ e# h' [! ?# P

9 _7 i  K# T. J; L; D' e. Pset unhonest-service 0

) E& J8 X' V" S1 T; V, E9 G% `8 Q( X* o/ n1 b, B0 U
set oscillation 0
/ I; h7 Y/ |5 |; ^2 @& ?+ Z. x- |

8 G. T7 E# d2 w' j4 J% }" ^set rand-dynamic 0

  V0 @& d" C( Q( [: B  v+ J6 xend4 L6 I/ q+ x- `, H& p

  ~6 s* ]( {9 V% C5 W9 M3 c# wto setup-turtles
) \) S: k2 [: zset shape "person"! }3 {. K. k- l0 ?. {% ]' L
setxy random-xcor random-ycor
3 I% c7 L1 Z8 o: D3 F4 @+ Hset trade-record-one []7 S6 Z6 e! @( ~

2 [3 |! ]1 d8 k, g/ a2 Q$ {/ iset trade-record-all n-values people [(list (? + 1) 0 0)]   _. Q- M2 q; Y; _5 _0 e$ C& T& o

5 A7 t3 ^" \0 ?! Z8 M: p! i1 Dset trade-record-current []/ M" c$ j$ `2 W, A9 S  U, K
set credibility-receive []
, [9 X: w6 k0 j& n, hset local-reputation 0.52 o  t8 `& @( Z
set neighbor-total 00 e- Q9 z7 E+ `0 \
set trade-times-total 0
# }8 }& u( e- _7 Tset trade-money-total 0
# S; G  ^3 e# ~- E  s' ]set customer nobody& |9 E% J( {: G4 e
set credibility-all n-values people [creat-credibility]
4 B4 f3 `& T! H8 \set credibility n-values people [-1]
/ F& q' T+ _5 i  l( _get-color/ v7 }# T4 Z, W: y4 e* Y. f" ?: m. e
8 y& u5 q7 t& ~1 J9 B4 j; W5 W. W/ j' s
end; `5 T# I( n! X8 J
6 W: j5 x' t- c6 m& Z2 t. x; g
to-report creat-credibility; U6 q% \. `* R2 m5 v
report n-values people [0.5]1 L/ Z" a; z2 C% ]* X" `- ]2 n
end  t- W/ E3 w; `0 W+ q

5 ^2 @2 J, \( Pto setup-plots3 {  C, t' U. T! {# ^1 y
( Y( l+ V  y6 C. V
set xmax 30

6 w2 F% U! e. }* M' X  v9 N9 Z7 @' E8 N* M( I* V( {# y; v
set ymax 1.0
* W: E7 j2 I2 k9 T3 I6 V
# o' L1 _; X8 I' d) w" [
clear-all-plots

( b( X9 R& w& B- I( P/ K3 D9 r
+ F' S. T7 g: k4 Isetup-plot1

. N1 ~& C2 e. b9 E' G3 G  D9 q& @& B  G# O9 M9 y! m$ n: ]
setup-plot2

0 b, U6 g' u0 D2 O
+ x' ^+ j& O0 ^0 Xsetup-plot3
) L" W' Z0 a' G* w. u3 R" R0 }
end
% {+ h1 d+ y: [+ f# o, \6 T1 V, _9 g( q) A, B7 v) s, g7 ?
;;run time procedures
2 {. s! p6 Y: i: r8 ~) p& s) M% G3 N: l  R: c3 U
to go
: m6 S3 v% D( E1 p- g3 F' e
5 g. q$ s* K6 P! O9 gask turtles [do-business]

% g- R# |; M6 {3 O) rend) B) T7 n1 D: i* i/ M8 U$ S- {

' o6 W8 @& O8 a7 ^" W/ I: Gto do-business   i& H; {- s, S; a4 t( \
6 W: \; ~: l4 j) |/ D" B

8 r& S" y* i9 J* p8 ?2 H1 d4 N# Vrt random 360

2 F- W7 S/ V  v1 U2 U( O+ b- U( J5 Q0 P
fd 1

8 Z; E( V& X$ l0 U1 Y+ t+ v; W
1 |* Z# a+ Y) l, P6 O% a5 j8 Xifelse(other turtles-here != nobody)[

) E: l/ a* }) t) v9 ]+ I: Y0 A' w0 s
set customer one-of other turtles-here
5 R/ a& |2 L* p0 W1 P# L9 C

" _6 G  D) w2 L" \;; set [customer] of customer myself

' i' q  N: D6 T; A
- r. O3 r* D& uset [trade-record-one] of self item (([who] of customer) - 1)0 Q+ ]: y* p+ w7 ~: r" \( W; Q) ~
[trade-record-all]of self
, F9 t( l) P- n* ]6 q: C;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- x5 ]4 l/ L2 b5 H2 _: N, [) j
, O! w$ T8 Y, G" ~
set [trade-record-one] of customer item (([who] of self) - 1)% b( D% v7 w. C, p
[trade-record-all]of customer

3 H$ d* P! E1 s- Z
- q# R8 G7 m" Z1 w5 j" V$ k- E; Rset [trade-record-one-len] of self length [trade-record-one] of self

/ V- z/ d& T: C* @9 m0 ^" k' N0 @3 ~2 B. D+ t% D$ @
set trade-record-current( list (timer) (random money-upper-limit))
- A2 y( [$ B: q3 M+ o1 `& `, I0 w

) T8 T2 F8 \2 _6 R; b1 s! ^ask self [do-trust]& o6 \) o" B+ @' `- a# f1 q) Q2 ], y3 \
;;
先求ij的信任度$ B  a2 G; ?  i4 V" J4 B% |
- h! L' g  \& |0 w- I, `4 T
if ([trust-ok] of self)
# K! j+ `. B* b5 U;;
根据ij的信任度来决定是否与j进行交易[( Y. D5 h1 l# y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 I) x5 \/ u2 b' W5 O. k
& P- L* K7 H# y2 i/ |, R6 B[
8 A2 |7 M1 n% ~
7 W2 W/ w! k* n/ @1 W& w" s8 m" W( f$ s
do-trade
: Z) d# B' |# {; w) C% m

7 i) i' ]$ @- |, f' G, K# Hupdate-credibility-ijl
$ t0 P# m$ ?3 W+ T! ]5 f
# g* F2 x6 O$ d
update-credibility-list4 Q$ Q  v" T& f

) t% H; A. P: ]8 W! Z$ @8 c* R' S  W% S1 W/ c1 D- v; W8 r& l' q2 r" ]
update-global-reputation-list
- d- A; X' w1 B5 H9 X
  |: G+ j& ~- l/ E% |) {8 i0 o
poll-class
7 y" e9 q- g3 D) b3 C

) @* A3 N1 G1 |6 {! Gget-color
0 Q7 V: d4 `: N5 s# X6 D

) y8 k" l  O$ t$ E# {% R, r, H]]
0 z$ C4 I" Q" _' ~% F2 ]6 @0 S
& I, @* T: p2 z9 j;;
如果所得的信任度满足条件,则进行交易
8 O- M8 u1 x" V6 ~; z& Q- ^
, z) N0 j( r$ x; g[

* P- \8 b  ?: ~+ J" C2 e" a4 \* `: A
4 j7 [) q9 |2 d. \0 C) [6 qrt random 360
; J7 q/ z* x9 A# j5 T

* Z& U/ r2 @" |. K- Z5 R( U/ ~- Kfd 1
% E  e: q' N9 h, p" X% T
8 D% ~/ @1 u4 h' S* f/ A1 k
]
4 X& I$ |) }; D" l1 F

( T3 R% f& z5 e9 j/ h' _5 ?+ Tend
4 y  i$ v% |2 I1 |, T# |

5 W$ J# A! |  u0 e& ?5 C; X' L$ ]to do-trust
/ H) e( E8 x) g* w8 Tset trust-ok False
4 ?  \+ R- A# n( i4 b, \7 W
2 V- C* a: A4 I2 V/ O

" n' k0 U+ y! }9 Jlet max-trade-times 0
; n( D7 M. Z5 ^$ ~foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" @+ u9 w4 j- v2 }- D3 B
let max-trade-money 08 o+ w6 S: G7 X, \! y2 b, W5 y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 ~$ F8 y; ]: S0 p3 `let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ D: P; _; s0 t2 w' P# o
8 {7 R+ m/ [- T! s" N
, x& a- W6 \" X# Q2 W- _" `
get-global-proportion: c) _9 D1 N5 r1 ^  Z
let trust-value6 K3 e; x; l0 m9 Z8 y. G7 n
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)
+ e1 E( Z. t5 `
if(trust-value > trade-trust-value)
% E4 l% n- U' e4 v[set trust-ok true]! ^# M9 ]4 T6 z# `; L
end- t9 z2 |2 C# Z
) w% e# T  C% t' J) [
to get-global-proportion0 j% P/ u+ U& q5 v: v5 t
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# c. \6 a/ B! ]& q( j
[set global-proportion 0]
- Q# K+ J) Y- f! I' I# q. \; D[let i 09 u3 X/ z2 X0 f9 E/ ]! i/ V
let sum-money 0
$ b  W) G, B5 [  g( q6 O! mwhile[ i < people]2 W' r, a& q6 t; \8 {
[, V2 Z" t- k+ g5 \
if( length (item i
- T$ W, S" o- S[trade-record-all] of customer) > 3 )

/ c. @, e8 h9 ?6 h& _[
3 V" P; H/ W, Q+ h% H7 o8 Jset sum-money (sum-money + item 2(item i [trade-record-all] of myself))  k# `' M. f6 h5 W7 H2 Z
]
1 g* `- ^2 K& C& a4 e]3 @/ m; f, z+ j3 W
let j 0
6 g) l, @; @, `/ v# p# t5 g+ A0 Clet note 0" P/ C1 Q  _: A/ e+ B
while[ j < people]$ H* T/ d* E, u, u
[
5 }: A+ |: A. V$ h1 c2 oif( length (item i
% R+ |1 u( _) j$ a[trade-record-all] of customer) > 3 )
+ w! A; R) f) @% \
[
. x0 g! N6 o: N6 Z3 `ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 l# T7 n" U7 d& c1 s' P' g
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 O$ O( w0 q9 E& D' D0 A[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 j+ l: e4 e9 i]
8 u# o7 G0 \) b, Z9 v. ?& K2 Y1 B]) |9 M. S9 p* B% L5 z5 i! E
set global-proportion note3 _! J8 _7 V- Z1 x
]' O2 Z6 Z2 r9 e. @/ u; u# B( b
end
& d" a7 k% h/ H* L% a7 s" K  k$ {/ j
' o! q, w: K4 f4 i8 r6 Mto do-trade
+ R, o+ `  e- s' J1 ?( P;;
这个过程实际上是给双方作出评价的过程
$ j- Q% @0 N; `3 Sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) O9 K: x9 ~4 ]) S! H4 o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 l7 `  L+ ?9 k% G- iset trade-record-current lput(timer) trade-record-current  _; z0 Y; S) w  S7 M
;;
评价时间
0 P. |' m! m* a( w& t# qask myself [% v/ T) Q* @; r2 K* L
update-local-reputation1 m# D* J- l. H/ U: a: H8 b, L
set trade-record-current lput([local-reputation] of myself) trade-record-current9 b0 H9 R5 A- b* D
]4 d: o0 O# {8 I; K$ c
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ C- b$ l" ^: V. H5 U;;
将此次交易的记录加入到trade-record-one( Z) J" c) I# |
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 H3 v# y/ ]) A9 @/ W+ p
let note (item 2 trade-record-current ). P8 F6 j4 H, `
set trade-record-current- A- F6 \( q* ~$ ]  G9 P8 H! Z) W* W/ ?
(replace-item 2 trade-record-current (item 3 trade-record-current))

$ {; \3 Y. N) u0 qset trade-record-current
! E) j' u, i: s/ p7 a& E(replace-item 3 trade-record-current note)
& W: A: W4 ^' y  O& u' I
, O/ U3 J: x6 |, M1 ^4 |
  W9 }- S5 Q! d$ B$ a0 T
ask customer [* ^6 f2 V+ ~, [/ C" i- |# t- f: A# t
update-local-reputation
6 j- k* e1 y* H$ d. pset trade-record-current
0 d+ C. s' m- i. O" A(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 `& w: K0 c: W. g4 G& ]
]
# R. V0 X8 Q3 a) r( z9 }. d
/ `+ x5 q$ L3 p% a' x# _
  K! ~9 k0 U3 w7 D( v! P- z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* p8 h' ~; ]: M9 I) a

3 h7 m; }# O+ _2 A0 H  A7 Vset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- v7 V6 B+ S8 K' M% N$ e
;;
将此次交易的记录加入到customertrade-record-all; H* I& I$ A8 t$ \
end
* G9 G5 d! j7 E1 @6 f0 @
7 L- R+ j# P6 ~& y4 |- ]. eto update-local-reputation
9 P' [) Z' U$ vset [trade-record-one-len] of myself length [trade-record-one] of myself
. Q: G" s) h5 f$ K6 X6 R1 P: V, I3 @! w9 i

7 P5 o' [3 J! T  o& ]' h  r& Z  f;;if [trade-record-one-len] of myself > 3

. o; L7 M% X& b( Bupdate-neighbor-total
1 g% m3 f5 g! W, t4 E- d3 m;;
更新邻居节点的数目,在此进行
1 N2 l* q2 {. \7 [, jlet i 3
. l1 s4 A1 T3 w1 g: }5 Olet sum-time 0/ }+ Q* \* E& m. T% z
while[i < [trade-record-one-len] of myself]/ Q, L) h; R+ x: m7 k! K9 M7 L
[4 t) [. x/ w5 R7 u# W6 E+ X9 ?  C
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 K! P4 e9 m6 f6 r& f# U& J0 f# Dset i% G9 g) |& V% B" {4 v! D
( i + 1)

* |* M. Z& R0 P: ]- G]  o8 Q, |7 l& B( m& u
let j 3
1 m, F5 C8 c! ]; l! L6 Slet sum-money 00 V7 a/ _, |  Z1 ]  L3 V. _/ M% D
while[j < [trade-record-one-len] of myself]/ N. j5 ^: j; j! z* d) Z
[
2 W. _3 S9 }  C0 O, Dset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)% K- t5 r9 a- S
set j$ v8 O, w+ z& M  @2 R* h
( j + 1)
5 ]" K5 k0 p! Y# t) N; ~. d6 j
]7 W) x2 ^8 m6 ]
let k 3: n9 Q- a+ Z0 s4 l* F- m0 ^
let power 0+ k. X: [2 b! T6 b& C. Y
let local 0
, Z- H3 @6 H6 r. L. @while [k <[trade-record-one-len] of myself]
0 k/ z. X4 H+ z+ U* C8 Z2 h" f[/ f0 ~1 `$ q+ {
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) - O3 m+ Y( G" F
set k (k + 1)
# V" v7 ?- ?) v: h]
, B- a1 A: |" P4 b+ Aset [local-reputation] of myself (local)
7 \# k' V7 E: w" x. U4 I2 y8 [4 @end
! o) \: c6 f( a% S" S
8 f9 i; E$ U. {* m9 E0 Eto update-neighbor-total
0 G% j/ z) H4 O/ x( I; Y6 @
( Q5 M  A, g- Oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 s3 O5 m8 e4 s" @' O! M% I" h8 E8 q  d' W
6 \# a; ]' `. y
end8 X# y! `1 h4 Z, ~6 @
) w  X, o+ P8 q+ w8 y
to update-credibility-ijl
+ P% ]7 Y) B& R4 j  F6 ^( S, F* a7 _2 k8 R) |& m; W
;;
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。) B: R! ?% i  T. m
let l 0* w" C! r, E0 u/ t* K
while[ l < people ]
; W& d( d: }( {. b8 t  g;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价. ^- ^6 d. ~* e% G! G) J
[
# p9 Z1 J8 P! Z  qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)' p9 B0 K6 t! y" D6 h
if (trade-record-one-j-l-len > 3)) l$ M9 l0 ^9 x8 p, J! c
[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 @' J' @4 T( l6 F" g2 e4 y$ klet i 3
, A, P0 k# J1 H+ h3 ^let sum-time 0& m2 T; b$ Z! ?, a
while[i < trade-record-one-len]
; w" o0 X' w/ i2 _; n[) c' m8 K. i# ]. }( U. _, X) E  [  ]
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" F( ^# ^2 `9 D; S
set i
# W& @. P" D5 h+ g8 ]! E( i + 1)

, P; f) c: y! O, L]
+ ^+ v4 q- l+ k  K( ylet credibility-i-j-l 0
! q* x& k* I2 n) u- L( @- };;i
评价(jjl的评价)6 F" C1 X$ [8 M/ u5 L' |
let j 3& A2 g7 w! j+ ?. s+ M% h
let k 4
+ [+ I' f% O4 J) N) s" F2 [while[j < trade-record-one-len]
0 I( a+ W' P' |6 [6 K[# u( A  f4 h  J3 P$ @1 }
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2 A7 _& ^0 r6 {6 U
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)2 b/ k- |$ `% H9 S( y- N2 w
set j
- @5 B) \3 z; |: l6 C& f9 M- ~( j + 1)

+ ^% |- h$ w5 Q; g]
4 j' l. j+ G" g6 `3 Cset [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 ))
; J5 c$ |% X0 ]8 n, c1 D- D0 i( n2 i* I: B5 w- Q2 t. F) c5 o
, @1 ~9 y) A2 `& \( F
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ {5 E( `" c3 Y5 N& d( p;;
及时更新il的评价质量的评价
4 N3 \* F+ n6 eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 m; @# Q8 A1 I/ a! u( l2 w
set l (l + 1)
) I% Z8 k# e9 h$ m]
4 k8 V( e- J. ]% Rend: [) e: ^0 D, j5 Y/ p7 k' N

) k6 v, Z8 |0 `6 L1 N  e) k) {to update-credibility-list
- f6 g7 W% [6 @4 m6 j" c) w: olet i 0
4 G' K* J2 W4 \4 y  x; T# p& N# e7 Twhile[i < people]
4 D& E$ z# b* O, q  R[2 L. i: E- w) i+ e, L% V) q7 G9 x/ c
let j 0
% w* X; {6 b8 {- L+ x& C, hlet note 0
5 G/ R; H+ h( G. Z. x2 P- rlet k 0* Q! H0 t! _% Y1 T+ A1 n
;;
计作出过评价的邻居节点的数目
$ y$ W/ \2 _% }- h0 kwhile[j < people]9 A; U: Y( O, x. V3 |
[# c( _- A+ i% X3 {, [8 t
if (item j( [credibility] of turtle (i + 1)) != -1)3 n1 m- j: v3 A! v% v3 ]& b; c/ P) J5 E
;;
判断是否给本turtle的评价质量做出过评价的节点' y- [! ], k. _  }
[set note (note + item j ([credibility]of turtle (i + 1)))
" C9 Q0 o7 n& f. H- w# p4 o;;*(exp (-(people - 2)))/(people - 2))]
& q1 }* ~. J+ n5 G& m
set k (k + 1)* J! Q2 B0 h; t5 D
]! o0 A' p" E. r" E
set j (j + 1)4 _$ a& B: N4 S/ T1 [) d1 n" p. U# {
]
, n/ J5 C! ^; j( A8 Gset note (note *(exp (- (1 / k)))/ k)
5 W' M/ U- Z6 s5 I# hset credibility-list (replace-item i credibility-list note)6 N" O. L* r! T' d
set i (i + 1)
9 R0 ^4 @  T; Q+ \]* v( J' d4 K+ }& ^2 }; M
end
1 b. _- f: Y* Z; }- V1 \7 A9 ~. ]' ?! C0 Q3 O3 |) [5 H* Z( F
to update-global-reputation-list5 L' R. e3 p+ D
let j 0
; T! W, t! U* J' L% Dwhile[j < people]% c/ @& b" D; h5 |9 `' Z
[, u9 n0 B- B- L8 U, f
let new 0
9 R1 X7 d( J5 E4 E: c+ ?;;
暂存新的一个全局声誉) h  w2 U" ]7 a- n, ^
let i 0- y6 M; U" u% f& ~
let sum-money 0
+ @8 Q  n* U) r' Y5 M; Blet credibility-money 08 g0 ^5 h' B+ n) N* _
while [i < people]% b2 K" W# Q" p2 W) P* e& H  s
[
5 R' ^7 D7 X' Z- [* b5 _' fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) d8 e' c  c1 P" R6 A) {% Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) \2 v- n* c& I; L# x2 u# L# R6 mset i (i + 1)
. J5 _$ g, S. D$ d+ R) G& `2 T]
! Y" H1 d4 }8 M; K7 V# @let k 03 N2 @/ v- [* O# j, M
let new1 08 P! L" y/ K. ?. b0 P
while [k < people]' k6 z  L! C- ?  e* _
[' i+ t9 l5 t1 z3 _) O0 I
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 t6 K: n( ?; q* `7 |9 L) [
set k (k + 1)
6 v& h* W4 K  Y  b]
- b- V7 {7 l7 g& F  U; K# N; L: t+ A" rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! g# d0 ^# w) e0 }0 X% W
set global-reputation-list (replace-item j global-reputation-list new)$ K+ p( l$ S% o
set j (j + 1)* A3 I4 G8 K: @3 v: F/ ]
]
7 }+ {( Z: a, A- T. z5 c; mend* M) Y; _, ], P2 ~3 g  D* n
' ^) ^. g5 T: |

  a/ T# u, d' x
3 Z4 {" k( |& V) V% ~& f* yto get-color- n) F+ F3 V; n) J, g3 l3 ~# A- \

5 U" E- L* R9 E& ~set color blue

2 n. _% ~6 j6 E' ?! K4 }& rend6 D. T6 G: m1 L+ Q7 N

& }# W) F' M1 Z* L0 Q& E5 kto poll-class
! q7 J* B% g( gend
$ Q' F! U7 o+ K6 `! Q+ d. q- z5 ~  x  O& s4 y4 b8 G5 M+ B
to setup-plot13 j) x& T0 y) B  ]# Q

8 b# \/ ]# P6 }$ ^  M6 t2 Xset-current-plot "Trends-of-Local-reputation"

+ Z* ], H) i8 X6 l+ I% K$ q- D+ L5 ?6 V& ?; i) _
set-plot-x-range 0 xmax
6 @, r; @& F9 f; E8 X2 B

0 D, c: S; C5 [: L7 U. M1 wset-plot-y-range 0.0 ymax
: l1 S( @4 @! ?' L6 o
end
4 W% p, I. f( r" S3 [+ f! M! v! V, L+ i) J: x& M- [
to setup-plot2
  j* M0 n7 i# V4 |* f  c' y' ]. ?  k
set-current-plot "Trends-of-global-reputation"

# y$ f5 u- L: B2 ]5 R( `' ?& w& p4 L/ p
set-plot-x-range 0 xmax

' p. f. R- Z6 D; @
9 W; b% T/ c& t) _set-plot-y-range 0.0 ymax
2 S, c6 u( `" m: S8 z
end( l  V7 P% N# _  F5 }' t

- P6 ]5 R6 X2 U; y" ^to setup-plot3
' u$ W# N. Q7 P. }+ x7 m" n/ v2 x) T# z2 q' ~6 e; e2 V
set-current-plot "Trends-of-credibility"

7 _( s7 S6 Y7 I/ o
: q6 I  }$ E4 J# Hset-plot-x-range 0 xmax
/ W/ x# J! k' _5 z+ R$ \( K: m: ~

* B+ V: \/ `9 W- ~1 O9 S+ ~. b  `set-plot-y-range 0.0 ymax

" m/ M6 I. s, H) Kend
/ N! q+ U  K" n9 ~9 i6 }
$ I' B: o2 [, ^  Z/ k6 Hto do-plots+ V: b& S% Q" r) S; P
set-current-plot "Trends-of-Local-reputation"- B) L% e' w: }, e& T8 x: o) g
set-current-plot-pen "Honest service"
- q2 `/ z0 v( S3 H& Xend
! j9 v+ v! u: Z1 `2 ]! [' h: V) T8 U& c$ Z  {: J
[ 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." G) h% s% `9 ^; f  }0 I/ g
. B/ D$ a1 O" I+ w
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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