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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:4 b( N1 a+ x# @) A
to do-business
; |2 L3 E5 E- D  Y' G) Y+ ?. f rt random 360
1 r' L3 Z/ c" m; m$ R/ w9 z fd 13 ?7 @5 ?" `! p( E% D- Y: j. m
ifelse(other turtles-here != nobody)[9 M- j5 r' y/ l- V9 I
   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.
. g* n: F# ~. m   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 b  G& I$ b! P  l; ^2 k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& b1 ^; w- T+ l8 [8 ?0 ]0 a% u
   set [trade-record-one-len] of self length [trade-record-one] of self% Q$ [- z6 R# L: L
   set trade-record-current( list (timer) (random money-upper-limit))
& Y* m$ `: ]; u& b/ l2 c; }
' \6 o  o3 k2 Y. [3 m! n$ g3 @问题的提示如下:
9 z5 C3 r  t: h
& ^7 e! b4 u9 C5 herror while turtle 50 running OF in procedure DO-BUSINESS0 w6 M0 Y% x* M6 x( J, B: i7 ^9 s
  called by procedure GO
* e2 |* m; n" y1 F+ b7 r3 R' o7 LOF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 Z5 X/ m) P8 i6 m
(halted running of go)
2 I" m6 i* }: B- ^$ \  D
# F1 z: ]" J5 v! Y; f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~~
  T: G1 U; l5 H% U3 @  y3 _* U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- Z8 c+ g; A& b  A* |3 J0 m
globals[
) a1 `1 @" |3 q. V! |# c7 r0 {xmax
3 J, k: U4 k' r7 h( ^5 p; X' Oymax) J, P# Q* N( V
global-reputation-list% l6 u7 H7 {( A  o9 b' h0 N

9 B0 y; V$ s1 l, I' Y# |% w;;
每一个turtle的全局声誉都存在此LIST( w9 Y" R% |+ m  ^* _2 t9 \
credibility-list
; c6 J: w$ |6 N;;
每一个turtle的评价可信度
/ x/ h& \, \% jhonest-service
* I- M6 i* S4 e; r4 p6 |1 G0 uunhonest-service
' D8 R7 m) ^5 |) coscillation( W' i% o9 y( [* T6 G9 ^4 ^5 K6 i
rand-dynamic
$ N& v/ U2 Z6 ~], S' G$ P& ~: Z2 W9 C2 P$ d' Z
1 D0 p8 v  A6 C1 T- V
turtles-own[# x+ \! k1 o. f" K8 n; C
trade-record-all) w, {7 w5 H& w+ N+ Z7 y$ R7 }0 y
;;a list of lists,
trade-record-one组成
% h/ A2 l2 E7 }  \trade-record-one
, e" m1 }6 ~- u  T$ Q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 G- a8 ^, k3 E* y3 F6 d" |
6 D6 h5 |- F" S3 \
;;[
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]]& d1 y% h0 n: G
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]
& A9 k$ n2 V3 U% \3 h3 _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list6 L9 t9 Q/ I8 y# q2 o9 h
neighbor-total
/ J' l; O( b* }" F+ p, C$ E;;
记录该turtle的邻居节点的数目9 I# l" F& j! F3 m
trade-time
" R3 n, h2 h( v- R$ g;;
当前发生交易的turtle的交易时间
+ f9 S# v5 F3 ~+ P( B  vappraise-give
9 r0 q6 d2 B' S3 Y% a;;
当前发生交易时给出的评价
7 r$ S1 J0 E* @" N/ _( Q1 N" Aappraise-receive6 m+ K& G! x) T3 J& R; m
;;
当前发生交易时收到的评价: s4 i/ R$ u$ `$ y: N
appraise-time( o1 g& K$ j/ a+ }/ ^
;;
当前发生交易时的评价时间
* i( X2 }8 l3 _& Clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉0 t+ l% Z: d6 G9 c: x# Y# o
trade-times-total, Y9 J" N/ d2 B7 s$ p! h
;;
与当前turtle的交易总次数
  N4 N# c# H7 B+ D5 Y* Q( P! Qtrade-money-total' x1 s, B1 m% y- E3 z( F
;;
与当前turtle的交易总金额
8 K# X1 A$ }$ t! _$ J/ G9 alocal-reputation9 O3 m/ v& \; B' S# r% |7 U
global-reputation
. A+ p) I2 J5 e2 p) ]# Ncredibility( V2 d7 j( F- `3 q9 P
;;
评价可信度,每次交易后都需要更新
, ]$ c+ C7 R0 @) S' e$ Ucredibility-all( o" B/ n/ H- z- M
;;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; l: t6 G1 G! M* {
0 z' u- I; q7 D% l
;;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
7 w8 Q' n$ L1 ycredibility-one2 K) [$ r+ k7 \4 t: A1 k6 K
;;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 S# o3 N2 M( e, I: }global-proportion
0 I+ j; J$ C" M. {& kcustomer
2 v5 [! k. p2 ~2 q: x) e7 M$ _& Zcustomer-no- R7 V8 ^9 A- B6 \
trust-ok% A1 v/ V- ?' W& c+ A; D
trade-record-one-len;;trade-record-one的长度: O' C' O# j4 S( H) w. a: Q
]
2 q: @0 @% p! w
6 w! T4 k2 c0 Z! W7 B5 Z* M;;setup procedure% r# C# q- k+ Y0 z  @! M1 I
; G0 S7 l6 b! D  {. [2 t- [
to setup" u% Z, y6 s1 [1 K/ U9 O; K

- }( J  d) ?% n# j+ Gca

6 f. a0 \. b% O
& h4 \. B- [0 S! n0 _initialize-settings

2 m' v" }- N1 a+ Z. X( Q+ H; P$ D  C: ?) E! I; V8 V* p
crt people [setup-turtles]

6 e! @- D9 S. U3 Q# H; D; ^9 Z8 L* p. M! R6 b. u! p# t4 j' {
reset-timer
) \7 B6 l. t' I  u3 f3 I
0 r& z  ], S, h. g3 X
poll-class

& l+ X- r9 I/ q, M( Q; v
4 S1 B4 ]! u5 S$ P4 ksetup-plots
6 |2 p1 E* `* U" F( E, `- k
9 m  b; x9 Z# D) n7 }3 A
do-plots
1 c# u) r) E9 C5 e
end
$ K6 l% V# P8 v8 k- t6 W. f; E0 f7 Y- n# U
to initialize-settings, j4 [, d/ w! C
/ I3 F8 X8 f+ J7 ]
set global-reputation-list []

3 [, g  p% F3 B; d
. s' T8 K$ U; D% y( e8 sset credibility-list n-values people [0.5]
. _8 A/ i$ I: q" S2 U; r

# b' E5 ~5 h5 h& {& yset honest-service 0
& j5 B5 ~% }3 s
5 u% n, R) q' ^$ J& h0 B3 A# }4 A9 o
set unhonest-service 0

; ^6 N; C( l- M" z) t+ `
  E; m" f, r& }, Q- c# Zset oscillation 0

# \  G. m" O" }" p! ?& r
+ G( k2 t, C) A4 T( h) [2 {' @0 bset rand-dynamic 0
& P" f$ a) ]% _
end/ v7 N! L% a1 v, h. S2 C: Z7 ?8 X6 e
" `: l0 A; t3 Q* R- l4 h1 i( a" X: w
to setup-turtles 8 U- \/ J; `- A) A
set shape "person"
; F6 _' |& n1 X6 f5 X& x. vsetxy random-xcor random-ycor$ M$ {0 [8 I% t! y" j2 B# _! j. l
set trade-record-one []
9 T: D: H/ }& Y" P

$ D6 [: w9 ]& C& r% Bset trade-record-all n-values people [(list (? + 1) 0 0)]
9 g; m5 x8 N5 `* y* }) i6 R

/ }+ K4 S8 c' o$ L: `* vset trade-record-current []" U& t0 t% p7 B  [& K6 S5 j
set credibility-receive []& w2 b4 H4 s! d" {+ R
set local-reputation 0.5# D/ D- f1 a6 A1 ]3 W  j$ m
set neighbor-total 02 o% ]. \9 p$ N" w- C% l: ~
set trade-times-total 0/ ?& r% a3 h2 J# G- x
set trade-money-total 09 ]) L2 r: O. c+ P+ K
set customer nobody. w  T- v' y9 S4 P9 U; j
set credibility-all n-values people [creat-credibility]
, }: e  b% e3 E- h- p# x/ _' ]set credibility n-values people [-1]
' B) @% L9 J7 Q7 ~, A. y" T  E% sget-color
  P. Q. O& w4 t. h8 d& E4 `6 }: H" w

$ Z  @. i1 J7 @4 b6 ~2 C4 _end
$ E7 D+ S% g- g0 v- e1 x& |: u
  O' T" i3 I$ y1 a5 nto-report creat-credibility) l4 Y/ w% V& a3 z2 a8 u9 O0 R% Z
report n-values people [0.5]
6 e" k* E, B( K# ^6 z) Nend
5 C4 x& i; a. _( C- e% u* H' i% x
to setup-plots
8 `) r# ?: E& B6 I2 ^/ g, m5 I) P
+ y  [: V  i. @8 wset xmax 30

, B- M; _5 d  y* v9 y: ?6 O# B  ~+ C$ b8 P  G0 x
set ymax 1.0
9 b( n0 {$ |, T' r! V) A( B
1 W5 H8 X  `9 E
clear-all-plots

0 H5 z3 ~6 x5 x' q5 q; C
4 S+ g( J6 C' p/ w! L2 L# |( O, Gsetup-plot1
. ^' j  T. B7 \; d8 k

. m) [( t7 ^8 q7 M# |# u" ssetup-plot2
+ P  M0 l$ ^% M
; }4 R' [' K  w) J% n
setup-plot3
) A3 O) O' V2 ]6 p/ T
end
# ]! Y0 \- F. L
, Z0 j% N& P% S1 h;;run time procedures, ]  l9 V" Z5 d

# O% W8 C7 ]1 G$ h  ?7 Y8 i; ]to go- e; K$ P- h3 d' ]# s' e

4 ~. c% Z! h$ J) l' uask turtles [do-business]
# b; j: d' }9 P0 F. ^: Y5 C
end( Q& \& E; }" [9 N/ h

- P7 I. o( @  R, D( B0 y3 t3 }to do-business " j7 W4 c$ _8 h. Q7 S
5 Z! ^6 l. H* `( W( D& U! Q; L
* @# G( b( W0 J
rt random 360
' d: i+ |3 g4 L  v! r8 _

( R- d; O: S' @) s0 X$ {fd 1

  J3 d% n. [' k5 m: \- y; p4 c$ k5 ^9 Y" d4 ~( i, W; y
ifelse(other turtles-here != nobody)[

0 D6 ^7 K  r* P& ]8 @: }
, F% q% v3 C) i$ |5 ]3 fset customer one-of other turtles-here

! r( ~3 C, @9 o( \- w( s# V
/ r( {& |# |8 e7 e: G3 Y;; set [customer] of customer myself
3 F: K* f" x8 n

) ~  r: D9 ^- o3 g2 eset [trade-record-one] of self item (([who] of customer) - 1)1 V3 S, O. n+ \
[trade-record-all]of self
+ f, b* F2 }* ^;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 B" n7 S, G! S9 ?/ @

/ B1 J/ ?* p( [9 X0 _set [trade-record-one] of customer item (([who] of self) - 1)
1 M  }8 Y, @" l' V5 y5 L[trade-record-all]of customer
: z0 i2 ]# N5 |: K& M1 v

) B% \$ |. Y# R' P2 x4 }& n$ x, sset [trade-record-one-len] of self length [trade-record-one] of self
) z. ~9 w  C- Z& ]5 Q4 E: c2 ^

- @: i, ?' J$ r) F" a# J, rset trade-record-current( list (timer) (random money-upper-limit))

' T/ Q+ B* b& A" k
$ |6 y! g, J7 Z3 S5 fask self [do-trust]
; C/ R! w$ U$ K;;
先求ij的信任度& M, p$ m* m8 h5 N8 @  D. ?
6 T  t7 T6 S7 V0 ?
if ([trust-ok] of self)5 v7 x/ x- ?7 L: p, H; j3 T+ l
;;
根据ij的信任度来决定是否与j进行交易[, O! m6 M$ n+ r; R- M
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 u8 Z, t8 U2 X# s9 G; b' s

% Q, h  l6 X6 x3 |( T, u[
6 Q7 C7 |! d5 @( u9 U  N& b' q0 n
8 J0 U8 x7 O1 z( t
do-trade
- `: i7 C" m: Y+ R+ T! M+ l

+ y6 j7 O) {. f' ?0 Fupdate-credibility-ijl

' L8 U2 J2 O* Y+ s4 |3 c3 D
6 t3 o4 |7 N! w, p' r" Mupdate-credibility-list+ [) H6 |0 I( v
7 I( D% u; F' N( w7 l

" \) Y8 {7 m) Uupdate-global-reputation-list
: ~9 k- A, J. I- `% ^" h
' Y+ y1 x# m% ~1 z; G* @9 x/ y
poll-class
9 I" P- M& J% D

9 Z3 U  T5 v) z6 R3 n3 I1 G% R7 yget-color

% x+ a* I$ u: M( \2 v5 i$ T( T1 ]* R9 z4 Z+ ^
]]( e; D5 @2 R4 C4 H7 \- O. I
" {* @0 o/ j# I% w! N- \2 ~& N, r
;;
如果所得的信任度满足条件,则进行交易! g9 Q0 |8 D, ]5 `* h& E$ p

; X  m& C: Q7 H8 B3 F[
  A6 s5 j. q" D' C4 r3 L

0 q, ?  Q8 Z; e9 |& lrt random 360

& {# z& `/ e9 A9 b- ]4 \, S  ]! L" W: Y  ]& h6 \
fd 1

* d% @+ h1 r  _0 |. w) \9 j* \, q( Q& w( x
]

( z6 Q4 W8 ]9 k5 ?* q; t6 ~& P2 o) Y9 V$ T9 a& a) q9 l; {) n
end

) h& a, I2 \, G% m6 E) k. {, r
7 [& V& e% U. }" X6 \to do-trust 6 [$ F5 y4 a; z# s% [
set trust-ok False4 C: b$ p, w$ ~: x2 q6 @8 k7 l
8 ~4 P7 j6 k) A+ c8 ^5 k
' m( B9 v: X* r3 [+ t# W3 |: b
let max-trade-times 0
; q+ a! r3 e$ {- Cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% x5 O0 M, w, u/ ^* Wlet max-trade-money 0. x6 ^8 @4 S7 |0 c: S% i9 ]
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ l9 e4 h. Q* S/ h. g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! L, N- D: D8 O* ~4 Y3 {
6 i% Z) P3 M! q% R+ y

/ E$ H* r" [& W5 C) @( W. J5 jget-global-proportion
% l9 g$ j0 l$ w7 P2 nlet trust-value$ j+ l( m& _3 |; X
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)

$ \; f7 `3 a+ Y: |+ O3 v& fif(trust-value > trade-trust-value)# h" S; f, v5 G! c% }/ l
[set trust-ok true]* f% y1 u; C6 u; h$ C9 `
end
) l0 h# b  |2 L  Q, [6 I( `' L7 y: i7 r4 Z- O0 o- K
to get-global-proportion
0 S4 u. R, q9 {8 A' u, fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" A7 \- P4 T$ i8 W! ?, }+ b! Q7 F[set global-proportion 0]
* a5 |3 B7 m4 O' k* G[let i 0
3 C8 c6 }0 b! j& |9 Z" }let sum-money 0
: x8 B  f& z7 i! O; R  Kwhile[ i < people]! e( x% j0 {! f) r6 v- ]+ U
[
# d2 u6 B. c, ^+ M+ }: ~: oif( length (item i
6 a7 b* e7 l- h0 G[trade-record-all] of customer) > 3 )
; z5 K6 v( F6 c$ @' @
[
# j. t9 D2 g# oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 X) r2 g# R. B: S1 e' c]
, H* h/ n& q& _% Q6 ^+ Y]
1 I( }$ Y$ n( y6 mlet j 07 o' j8 T' K; @/ h* H$ n
let note 0% V+ H2 t% `, e/ S* @
while[ j < people]( A) E9 T# t) L) q! b4 R0 T/ z
[: a( U  I/ e  b9 _, U! x  R, r
if( length (item i
2 T; _3 U7 k  S[trade-record-all] of customer) > 3 )
5 ^; P* i; {# T6 o
[) E0 n6 _8 }4 m& ~3 Q( j( Z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' g. Q- Y; l% o) h
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& z+ O% P4 ]1 V) [
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 o) q3 f# m6 N]
! H5 q8 ?2 b8 b; q+ m/ ~; r4 `' `- a]
7 P% x6 ^5 x" p# ?set global-proportion note- z/ W: M" M$ ?
]& }$ z: f% x) O
end
4 L1 {1 }8 b8 v  r4 W2 j6 S, c% X1 }! m9 W+ e
to do-trade5 j2 g4 C0 Q# h0 [
;;
这个过程实际上是给双方作出评价的过程7 _+ M5 e" r! u  R+ a* k, d. {! M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- r  D* e' F: O/ R" Y( I. x2 Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 j6 N( Y* e1 k' J7 Oset trade-record-current lput(timer) trade-record-current
& d/ ?7 S& O% L* t9 J  Y: f;;
评价时间( Y1 A2 c) ]5 {2 H5 [$ M
ask myself [8 o) E. ~5 j, {8 W  Q
update-local-reputation: Q& T+ H9 G3 T
set trade-record-current lput([local-reputation] of myself) trade-record-current
/ X: |, N1 n$ `! U  I]
% v' l- j1 z+ `/ H8 ~/ u! mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# t7 K. @- j0 [  f) h;;
将此次交易的记录加入到trade-record-one/ L! I0 K+ K' m! s! u) j( Q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% [/ d3 ]( J) e* c
let note (item 2 trade-record-current )
: f, u( g+ G. E3 w: t# Fset trade-record-current
& \/ u7 C% L( g( f8 F(replace-item 2 trade-record-current (item 3 trade-record-current))

  S5 C) s+ c3 hset trade-record-current
7 k! D- {7 v: ~  v(replace-item 3 trade-record-current note)
3 k6 I& p0 ?" d; I& O& X$ X6 I
( F. F. U1 x2 V

4 O9 H$ x9 S3 |. G/ w. U/ Task customer [$ \9 I- ^- N$ `8 \2 E
update-local-reputation
0 x# s3 F7 p6 o. uset trade-record-current* i$ n, g, h" z' `$ @0 {
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 I8 U4 ~) A4 H3 I$ A" I( y2 B
]6 ~: d* W3 [+ `. W: g

/ x5 e9 z5 ^* j
* ^7 L( N- s8 o: [5 F3 c: K! h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" `4 R+ k  F1 n, B6 W# v! R& j

; z: a3 C/ o6 O5 w$ ^9 Hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 H$ b8 l; Z0 T7 ?* k, Q  r
;;
将此次交易的记录加入到customertrade-record-all( B8 g) I9 C; `: b! A0 e
end3 N" ^1 S. c: N, B3 O
/ h, F4 l6 L: }
to update-local-reputation
, T0 k& o" ^" W& U3 M8 d6 M  aset [trade-record-one-len] of myself length [trade-record-one] of myself6 i' w* j+ o6 a) N# j; A
- ]: L  h; e: f0 g
) E7 o+ _" k$ W/ [' Q8 k) l, O' o
;;if [trade-record-one-len] of myself > 3
+ Q8 i: r8 F6 P! Y0 w  ^) w
update-neighbor-total
# H% j) _4 n6 [6 G; y0 S/ k! b7 O;;
更新邻居节点的数目,在此进行
* n7 r$ M: \1 [- A% ilet i 3$ m4 E# y" X8 Y: _3 C" X! u& w" w
let sum-time 0
4 e* \1 L/ [" l! K! W6 \while[i < [trade-record-one-len] of myself]
4 i# m, S/ K! Q1 M6 C( H: g8 g[% Z" j) J* }8 o& V9 N3 D
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% N8 I* O* ?8 H2 @4 V, ]9 Z
set i5 h' m+ O7 o4 m6 I+ F* B* u! ~, I. k
( i + 1)
% r9 M+ f5 b9 n' A9 o+ m! J
]
' O! g2 f$ @$ W- V3 [2 @let j 3# _9 Z9 h5 r4 O  k# `
let sum-money 0) ^4 c8 G3 v6 {# c1 M# J1 V
while[j < [trade-record-one-len] of myself]
/ W  C& Z- c5 b+ ^* b% _[. C" y" W7 }: U/ E/ t: D4 |
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time): c) c5 u& X1 R6 h0 l- w
set j  K/ S9 f# Q" Q" x( N
( j + 1)

$ u# {3 G2 O- b7 Z]
$ s" b1 v7 \( H3 P4 N+ Zlet k 3
* x+ ~) y( D3 F! nlet power 0
8 ^& u5 \# b& Q" M' Tlet local 0  b# i  F* s4 k6 b9 k/ |
while [k <[trade-record-one-len] of myself]
6 |2 I3 N, Z) ^5 h7 V6 K[9 L, P" U8 z( q9 ]; c) o
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
3 \$ k8 Q% T6 ~0 }6 P* mset k (k + 1)$ X. r! c/ E. S" V9 g' q
]
2 B! T& M9 m7 Eset [local-reputation] of myself (local)2 h& q8 h1 R. ^8 z1 ?' ?, R; J
end
4 f6 H: i& ?6 l- Z  w) {' W
) q! K) r) U/ \) h9 Zto update-neighbor-total/ e: x1 W+ h& W6 k5 f

/ u8 R% d1 O6 m/ x0 u# A( [6 dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 {7 [" M4 s+ p" F* [1 b7 }5 s, l- X/ E9 Y; C
- d# g5 N" Y0 e' i2 J, h  ^7 o
end$ m: p) u% G+ |2 }9 L

0 b- z# ?7 r5 W1 pto update-credibility-ijl
6 a8 J1 a; J0 w' Z, T' W0 K0 V9 \; h+ H! d, g( I
;;
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。; h' v/ ~& F7 O* d% G" ~
let l 06 X0 A/ @# [% V2 G. x
while[ l < people ]) x' q4 I+ {( `( R( r% H, {, W9 K# r( J- V
;;
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: D3 T* t0 j: J4 g0 E' T' u( x
[
8 K4 M, ]* L' p; v7 S* x, Olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)( m& h- G! y' p. t
if (trade-record-one-j-l-len > 3)9 T1 q4 K# r' y: [
[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
3 ~+ s* O9 S* l! k$ t' a: vlet i 3
0 E' H8 u* n( l; B. X! r4 qlet sum-time 0
' R  P  G. F6 U+ j) Zwhile[i < trade-record-one-len]
7 }  g( Z) }6 |6 I8 Z8 q0 Y[
  Q3 n# {$ E, ?, N. y! Y0 A6 `. hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); G' j5 h" T) n' a% ?% ^9 v
set i
/ s  |" T2 a1 K4 j# b  ~" e( E( i + 1)

: ^! z! A5 }( w# c  S5 N) W]
) Y1 f2 U( I4 @- ]3 M' \' Q8 Xlet credibility-i-j-l 0
( @1 u3 _; W8 w$ ?% ^+ q;;i
评价(jjl的评价)$ a2 O' Q/ B6 w! t( ~' Z+ Y
let j 3
3 a. r- l7 a  E6 v3 plet k 4$ ]2 r2 ?* B; |0 g
while[j < trade-record-one-len]6 [0 q# \8 ?  d' {7 O  [
[
8 p3 x8 z6 V/ v5 J- X. h  \& kwhile [((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. c* ~5 L# t5 D) X: K
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)3 U$ r/ ?8 R/ U# h) `2 n, S
set j* D$ o6 S# p+ K0 U
( j + 1)
5 g) s7 F1 V) F
]
* v6 l! z  R: H3 M. {set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))( a/ P) e' |$ A( u$ n7 }% f
9 w) Z3 Y" G0 f4 M
5 ~5 E; m; a5 Z: w0 X! ^) ^' a1 T
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
' X: P' J; |* }' B+ _' x;;
及时更新il的评价质量的评价
8 X: E6 F/ C- J% D" }set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 M4 e! ^- f" h! T2 f
set l (l + 1)8 V* L5 J' M5 h* m( l# `! w6 S
]! x+ n8 @" l' M) Q# q/ u/ [7 _) w: ~
end
) ?# l: l3 p' t" M3 x9 J
0 L0 }7 A/ }3 Mto update-credibility-list
: T5 N0 u8 ~2 w& I, H. I; a' I7 elet i 0( y2 v; U) y( G- }) ]
while[i < people]
7 f' Z% \1 u1 w7 R5 A[
  u+ K3 u7 m6 }let j 0
: t% A1 J$ m( b: [7 ylet note 0
0 u! M: p* y! {# Plet k 0
# X% h7 V9 L/ V7 M3 e+ N# U;;
计作出过评价的邻居节点的数目
: S9 Q* \  A4 g. E9 d1 ~while[j < people]
. D" q) J* {% s( z* Y& w[
3 @. G) W, ~( I% k+ d, ~  M- ?1 nif (item j( [credibility] of turtle (i + 1)) != -1)
4 j* B/ P2 h0 I8 U1 o' D;;
判断是否给本turtle的评价质量做出过评价的节点
1 {7 q$ S* ~  Z+ D' D  j[set note (note + item j ([credibility]of turtle (i + 1)))
  A2 t" D2 M. k, N;;*(exp (-(people - 2)))/(people - 2))]
8 b& R. g1 L5 r% ]5 L# k# j* A4 l8 P
set k (k + 1)
) i6 L; M5 a( Y1 p7 e]; H; Y/ T* V) q) M" [+ F
set j (j + 1)
4 O2 @$ ~5 T# |: ?]) g9 x' T3 R3 y! K
set note (note *(exp (- (1 / k)))/ k)
5 C  u: O. }( f0 H, i3 n6 xset credibility-list (replace-item i credibility-list note)8 y$ |2 }% o1 \! Z* U$ z: u" q
set i (i + 1)
8 K2 ~* A$ `8 u  D6 {]+ c8 y' E. U# p! l) Y5 l9 U- ^% r
end8 X6 i. E9 A% v6 f

/ L/ }4 T7 t5 u3 g/ ^  fto update-global-reputation-list$ O& V! x; m& I6 A0 y1 J
let j 0% Z( r; X9 ?3 K) r1 F( s: P5 X) B
while[j < people]
) C* j1 ^' g- r% f1 w% u[, n) ^" m' R! c$ _) @4 [& X$ Y2 s
let new 00 t5 g+ R8 v. ^, T# c
;;
暂存新的一个全局声誉
9 p: g5 f' ^5 [let i 09 g, p% Z) D1 K$ x
let sum-money 0) O8 p1 L, o& J& U5 o
let credibility-money 0
' N  N) J8 {! ywhile [i < people]
, N% b/ J" T# L[
* A/ Q: t; X3 J/ c- K# X$ tset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: {8 m7 C9 A% j. ]+ c1 dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 e/ _  g% M, fset i (i + 1)0 ~1 T: r9 z7 |
]1 E: Y5 {+ v8 l
let k 0- v. m- [/ [# U, v
let new1 0, b3 p; [$ g; w: A4 K
while [k < people]/ O3 O5 S2 p" ~; j$ Z& E
[# e# w; n% V/ N) }! s
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)4 |* k9 g! ?( _5 `( Y
set k (k + 1)0 v% F) C8 t( j4 J2 h2 j
]
2 J, h. H3 N& H% xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 `) n- X0 S: |" U& A! b
set global-reputation-list (replace-item j global-reputation-list new)5 l  }! |/ s- p( q8 c
set j (j + 1)
3 t2 Z! X: }# y  d6 P5 T]) R: L* q* q; M8 K
end
7 }  d  H/ p2 c9 u3 `  F; q4 c" L( e

; x" E- A2 N4 u0 c4 W6 ~* m5 T- y: \' U+ @& a! d8 ^. Z; |
to get-color) M0 o; ]6 @  g! x. p( H6 A
' u# O4 I0 l% N( k" L0 ~7 `/ a
set color blue
2 B5 p: W3 Q# j: L, `) J
end
, ~  U; j5 N( U
4 j0 T, U3 w6 h1 X/ z6 mto poll-class. ~) ^' U% ~7 H  x
end1 D& S) X; e5 |; A' y' }8 P. E$ E

" a: a* n) W6 D- X' ]5 rto setup-plot1
- r8 [# c+ K( t( _
) k3 A' @6 z. i; s& p5 q1 \* Rset-current-plot "Trends-of-Local-reputation"

$ G) @  |) i; t% A
$ J, L7 i8 t1 ]6 I( @% q, ?1 u  Zset-plot-x-range 0 xmax

. C8 Y! d" J/ h8 X; ]/ h! X2 v3 h) y2 Q, H
set-plot-y-range 0.0 ymax
4 y5 y  k8 L# V! C. w( ^: W
end
$ l( e8 t; V- C: W% p' P8 P
+ P5 T, a* h' N; h  Y! j+ @# \to setup-plot22 F1 b( E" X) f  ^9 v- s

, B: W0 M7 e  p! A$ yset-current-plot "Trends-of-global-reputation"
, v6 k+ Y* p  K% ~* P
- q$ {2 n: u$ X5 r, K
set-plot-x-range 0 xmax
$ v% ]3 w4 Y5 E( _
4 M- Y5 f1 q/ h
set-plot-y-range 0.0 ymax
/ j* o  Z1 v# h& W4 G6 @
end
8 g+ |* s3 z& y3 c& _) ~% G, [$ Q
# Z; C- {$ C/ L% vto setup-plot3
" h' t/ z# c) u/ g4 E- {7 L/ y6 C4 q' b( q$ Y& F2 ?
set-current-plot "Trends-of-credibility"
4 u9 I( l3 o+ S6 \

+ N+ Q: s/ a- x  fset-plot-x-range 0 xmax
1 H) v; o' e1 I! L* j
5 b# o4 A0 [" D9 L- s9 Y' W* \  i( i
set-plot-y-range 0.0 ymax

, ^; g. U2 n1 hend, b" p  H; o/ L. a/ B: t
- Z' r& K6 u3 {1 ]! ^0 l" m
to do-plots
. \5 G9 D" R2 t9 U$ Yset-current-plot "Trends-of-Local-reputation"& }, L, b  ^! j! y2 P0 b. _
set-current-plot-pen "Honest service"
- `5 U" I5 B8 C" J9 h* iend
8 T: D% \* u7 J/ L. [6 V% K- Z+ A- c8 B9 N2 g& W) B6 H
[ 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 g+ s7 o  ]+ V  X" L9 X
) ^: n1 M5 @1 V, n( I9 p3 ^, Z. y
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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