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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:* a5 ~) s) J1 r
to do-business * q$ G1 X! R- K& o" D6 w
rt random 360
" Q& y# k( x0 r, ^# s% n; a fd 1
. D( H9 r& A  a2 r" a ifelse(other turtles-here != nobody)[2 N5 U( \3 `$ {3 n
   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.
  H% j- y5 O7 Y& l6 C% l+ t   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , m. {; T1 ~+ d/ I& u1 W2 K4 n
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, M: m& N) e1 ?2 `( ?1 ?   set [trade-record-one-len] of self length [trade-record-one] of self5 \" n5 e" N5 T/ t- ^5 v5 l/ z
   set trade-record-current( list (timer) (random money-upper-limit))' X- j) T9 o( @  C. w, R
, w- L$ r0 t3 W4 ?5 x0 Q
问题的提示如下:, X  T. n! V# Q( x; w6 E

  a$ J! m( l( B# s, i4 lerror while turtle 50 running OF in procedure DO-BUSINESS
. K! T9 R$ y* _) N5 v* Q. @4 ~  called by procedure GO
" E5 S8 P* `! IOF expected input to be a turtle agentset or turtle but got NOBODY instead.
, i7 z( y$ F9 C8 a9 S( q
(halted running of go)* p* u8 O7 s* ?) o

' r6 g2 v* ~# s8 z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 t* p; l. q8 E% P  W% X# [1 I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1 X" M2 @$ h$ A* l3 n- G! y
globals[# @# Y3 X) B$ H
xmax
  B6 v2 d& w6 Z' X' J7 X9 o7 aymax* }8 z' Z3 i  Q6 y+ Y' {" V2 `( o3 z! g
global-reputation-list# q  C+ b" i& q4 r/ f+ w1 l
; M' a8 ~, C5 T+ t5 [" P- [
;;
每一个turtle的全局声誉都存在此LIST4 f) g3 G$ B7 P8 l
credibility-list/ J+ `: H$ ^; l6 e* U8 N& U  i
;;
每一个turtle的评价可信度% b$ H( ?/ K$ j: `
honest-service
$ c7 P# z, G3 N8 |' t: Xunhonest-service: _# Y/ E: ]) m8 ~+ w! |; d
oscillation$ D3 M, n& C$ J1 T( v& r
rand-dynamic4 _- U# O( Q2 ^/ O" i9 a
], @( N9 A+ d% R2 x( a' Z. r

; i0 I- c: [9 P5 s/ Cturtles-own[2 ^9 c$ ^4 j+ r/ ]0 I- e: A7 j
trade-record-all. i2 V& b% |5 Y" Y: w1 J0 |
;;a list of lists,
trade-record-one组成
/ H' J! ?6 P+ i% Wtrade-record-one/ c- a* K7 @9 A1 k0 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6 Z2 g) o# G) r7 A% a' m, ^
1 U, E  z1 N  M1 k
;;[
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]]
0 H) a$ n0 y) l6 Q" x$ Dtrade-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]
9 e) t+ b5 R3 V% D. q5 }6 c2 a9 jcredibility-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- s( x/ `  i0 r! F! H0 j$ ~
neighbor-total5 {( D* m! |7 F5 [9 B
;;
记录该turtle的邻居节点的数目& s' i' n( y1 \" J
trade-time4 d3 l- y6 Z0 F! L; t
;;
当前发生交易的turtle的交易时间
# M" X& C1 p0 u$ T, U% p% D( l! P7 nappraise-give
+ E" t2 t7 R% T) ]2 ];;
当前发生交易时给出的评价
; h3 @; ]  h$ Cappraise-receive; E) S3 v( p+ u# G
;;
当前发生交易时收到的评价, M! f2 q+ W% ]8 x0 G/ L9 p
appraise-time
7 A+ M" k/ J3 E9 i* t& r;;
当前发生交易时的评价时间
% r% b* a% k8 olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉1 F2 G4 I! h  Z3 p5 w9 D, S  {
trade-times-total
( h6 T3 S0 u$ L% R;;
与当前turtle的交易总次数7 b+ @9 c- v- i/ i
trade-money-total
2 |9 X$ B1 }, x' i9 ^+ ];;
与当前turtle的交易总金额
# B+ H8 V; `1 |# l" U6 K6 y% |local-reputation
6 X% Z  F2 C9 x: Rglobal-reputation" E  a3 C; p! i; q# s
credibility9 h; L! H  S0 Q0 z' b4 J
;;
评价可信度,每次交易后都需要更新* S% g1 A9 W( `! E1 C7 X3 W; F
credibility-all( g4 b3 {. i+ U8 {' ]& {+ Q
;;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
. M! |" d- i7 v( U7 w+ Z9 o) u. l
( M% L1 R6 U; J7 h- l  k: I;;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0.57 v, u$ s8 I. ], I
credibility-one
+ Y1 l: m- y6 H+ G" y6 t;;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people8 x2 q) u7 W8 O0 [8 S% D' y
global-proportion
' s- D' v/ g0 Q0 dcustomer: H) c, r: Q. A& x. T
customer-no
3 P# r  Q. @" w' u) G. K& otrust-ok
  W1 j0 @* T& R" btrade-record-one-len;;trade-record-one的长度
! s1 G" _# @! \]
1 R, j! b& [7 {; U2 I8 v. A' [: u- P0 ]% [8 D: E* a' S1 y
;;setup procedure. M! ]4 m% ]2 B0 f) [

& A1 z+ e# W& j, T' ]. dto setup
( Z; @4 g& a, h7 R5 @  j# p( m! R, ?9 l, w* {, R1 |
ca
& U; y6 b( {" S; ?9 u
0 n; @! M  }1 d8 e5 Z, h1 J8 `- u& `/ J
initialize-settings

$ O5 ]1 x4 ~) j) b$ [; W$ N1 ?9 l0 b8 ]7 ]9 [2 \9 {9 d
crt people [setup-turtles]
6 n& o5 t6 \+ B7 J

1 B- L' U, \* b6 w# m0 T: qreset-timer
' ~4 W! s% F4 J
3 N9 `; F+ I- I3 z1 K. `! k, m9 Q
poll-class
" P7 l" x' k9 B  C. ^2 [: e9 e
! U* i$ d: K# D1 L. ~1 {' w
setup-plots

5 Y; _( a% Y0 H# e1 e2 h/ W$ z/ v$ X5 a# A5 ]. M6 F1 `. R6 }
do-plots
$ Q' l! @, @7 O. z7 l3 h
end
: _9 u- {/ U3 z8 g6 W8 ~% y9 S, p+ g0 N  e; Z& |/ X
to initialize-settings
- Z( \  P! \; t+ Q* K0 f+ Y( [! s3 j+ t: I! l$ _6 ~/ x1 x
set global-reputation-list []
% H9 E7 H5 F2 e# ]2 t
4 ], P; O- L. o$ S. y4 Q
set credibility-list n-values people [0.5]
/ X8 v( h/ s1 e, z; ]' h# n( |1 _! y

: r, I9 ^% t* s- |6 Fset honest-service 0

) S  c& @! L! E1 q0 t9 B, G5 z  J( O2 B" q# ~
set unhonest-service 0
- a& m+ z0 c9 C3 Z/ V7 {

, Y0 E: w5 X( c6 M3 R( Aset oscillation 0

9 Z+ s$ Y4 |& ~% T8 ]
1 q& k9 @# y. N8 @! yset rand-dynamic 0
1 A, F6 X( C9 I' C
end5 Q1 x8 Y; Q9 N9 \  j
6 X/ O' U; a: ?( b- I' n4 R/ l
to setup-turtles
4 ^" X  z0 }! H' o: G8 ~6 zset shape "person") |* L9 ]( U% A/ q8 c' h" l& ^
setxy random-xcor random-ycor
  {% q8 T4 ^3 Q* Bset trade-record-one []
. j8 g! k) r% ~+ @3 j, n

4 e% x$ |- j7 c0 T5 _set trade-record-all n-values people [(list (? + 1) 0 0)] , f8 j) R2 T6 O( n8 M" i8 L6 s5 Y0 E4 Z
: U6 M9 U; V/ S* d0 n5 X% q
set trade-record-current []
3 z% I5 k+ o1 `" i' v" h# ]% Pset credibility-receive []
) r0 f. K# S& U9 Y" L/ Gset local-reputation 0.5( f5 r" H  E0 v) @2 @
set neighbor-total 0
7 I- V" r. r. l# r" ]$ ]7 tset trade-times-total 0
9 y2 H; t, {( b( C4 A3 \1 x) E8 Jset trade-money-total 0/ |  j$ E3 o. [8 n1 |
set customer nobody
8 {3 i7 L3 y% t7 @/ Yset credibility-all n-values people [creat-credibility]
1 }7 t" x7 n6 \6 cset credibility n-values people [-1]. L6 L. }' S8 ?- d
get-color9 d  ?$ O0 U* f; {" |

/ {& \+ [& n! D* x( I( Rend
; S! X% _% U* i
) A0 l9 ~; \( t  g! o; i# q9 w& |to-report creat-credibility
4 a  \2 Z  c6 U8 i+ N7 C! Qreport n-values people [0.5]
, m. N( V0 ^1 K4 E2 O( H) U* ~4 Zend  d2 p8 ]$ n1 w" c

7 {9 e, f9 A! d% h8 V3 Y, Kto setup-plots* i& C/ r- u, `6 J+ c; F5 }
1 I% E0 D! Q2 G. I! c
set xmax 30

7 L& c& M3 D( J. u* ?; Z& k! t# y# X2 B  m0 t
set ymax 1.0
3 _9 C7 m$ u) b  n* O3 z3 i% P' h

" }8 t$ J( ~: c4 ~1 R# t; rclear-all-plots
% \0 \. V* m- p; s8 F4 {( a

# x2 O3 [1 o; o1 b" qsetup-plot1
5 u- I- m' u, M1 w/ z

/ w! G7 ^% e, u9 Gsetup-plot2
' W( d2 G6 O) L7 e

; x5 ^' }" Q% P3 x4 y' P. `7 `setup-plot3
. t( s5 B6 z) S- [) J. M
end9 `: m8 F1 V$ \5 ^; A2 j: J

2 k( }, G0 K  Y' _" j# E' [5 x;;run time procedures( S& h6 Y' S- a" T
. @7 G/ R6 Z: t' o; l6 F8 W
to go" e9 e8 V( b6 M; J
0 P% L5 z% x9 l4 o6 i! B' b4 I
ask turtles [do-business]

% N, q6 J! D( m/ V# u  c5 Send6 r* }9 c+ v: [8 g" J$ z6 m

1 Y0 F$ o1 v- J; X0 l1 O" cto do-business * `" O2 G% R/ g, R7 i8 m$ `6 U
2 E6 o7 S6 E! d

7 i' Y0 h  t" p* Y$ @; N4 ert random 360
0 _2 Q$ F! j$ {
( a; i$ R* e. {0 O4 P: V0 g' k
fd 1
6 {, J, T4 a- |) h

9 N  ?) S; M5 [9 o: B8 i. j4 o! j0 lifelse(other turtles-here != nobody)[

( g8 `" U9 X& h- K3 d# y
- F3 o- T" s! u6 Q+ d, b4 n7 V# xset customer one-of other turtles-here
. @! o+ F: ^: @( W  F5 }1 J
& G3 v7 {6 O' @& c' h
;; set [customer] of customer myself
* }1 q$ i/ a3 i/ Y5 D% T) ]

* j$ y6 [; c, i% O: R* C$ jset [trade-record-one] of self item (([who] of customer) - 1)
4 q- \& J* y) F8 V5 z  q3 G[trade-record-all]of self8 G3 Z9 v& e* g) H3 g3 z; q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 B  _3 [  J; ^" S

4 T4 B) t+ P4 s- _! _  qset [trade-record-one] of customer item (([who] of self) - 1)
3 I$ O( D2 H: z[trade-record-all]of customer

) f8 ?4 m8 \0 m& d8 _  r* M+ y
+ V: D' r+ q. `  @* H* l8 {set [trade-record-one-len] of self length [trade-record-one] of self

" ~9 H- F% C+ Y- ^2 W: |0 a% U- o. P) H4 R# X$ d: o- g
set trade-record-current( list (timer) (random money-upper-limit))
1 ~0 |' |% |1 Y( H5 ^8 {
. S- r, X* E9 k2 z+ g- G
ask self [do-trust]8 S4 [' R/ h+ W3 M8 |/ ]3 C, [
;;
先求ij的信任度
# j. G2 p& O( {. C
1 k' b% \8 }/ }; L0 J+ Dif ([trust-ok] of self)
  z! i9 G* ^! B3 p;;
根据ij的信任度来决定是否与j进行交易[
' S) s4 S& l7 i  m9 iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, f: W/ T8 _/ \1 X3 P

1 d& {8 |9 o3 k/ I[

5 L# [# e: M6 Q, F, f
4 N7 n6 b' d& S4 ?- I% Sdo-trade
# |& I+ m" _" `4 k8 L

4 B7 T  A% b8 T6 a: dupdate-credibility-ijl
! L/ b/ G; E: l$ E
: |- E* r2 S" Q
update-credibility-list7 r& D' ~. w! @- A3 u4 G$ L
3 }0 m2 ~6 U$ T+ M: h# c1 {
" e* N0 j/ y" |$ S; i
update-global-reputation-list
& n/ Y/ ~9 w8 h
& s3 g/ b: v$ ?. r
poll-class

9 h( u9 a# {! M3 K
% T2 |' \$ `* k, T, _get-color
0 j5 v8 r1 K$ ^$ v

, L. w7 v) k1 Q" O]]: e: W3 L. Y4 S0 e" U- q

5 k, ?& y* E% d  Z3 R;;
如果所得的信任度满足条件,则进行交易- t7 E) |, H' G' B5 V5 g
( d. `. r( d. c  A
[

% e. |/ r( o! N: ^, V
! r0 h" v7 q% B! Y( x- Frt random 360

1 a0 y3 V7 s: M3 m' i0 r* ]  w  p, U2 z& y* Y% |+ W8 n
fd 1

0 I: `) g9 r7 S1 w2 `: q! I
) B& j9 `  Q! Z( y]

* A7 i4 U( D, B* K/ I+ q, N
/ i! ^, U# {8 Lend

" \# f$ a: x2 N1 {1 {* b/ y4 \, l- W1 q% J. m
to do-trust
, i8 e% d8 D5 q+ Fset trust-ok False
' q1 v. y9 {1 @3 r! L- N* Z& A4 |
& v: v( V5 [" |4 y* m, y* |8 S
let max-trade-times 0
! s/ b# F  w% M: Eforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# B% }% P# r+ _1 a
let max-trade-money 0* p& v4 S5 K& H& ?# ?% r" b- y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 Z2 d- z0 L# Y& C0 n( f$ U+ n0 {let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' M! m5 J; H4 j+ |7 ?/ i
* `: [8 p- w  E4 E$ R

2 ]9 W0 R1 e+ j% M' e$ i/ B0 Nget-global-proportion
! I* c) m; h# {let trust-value! ^+ U1 h! r, X6 g1 l, u
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)
5 H; f6 P7 n/ }' w
if(trust-value > trade-trust-value)' R0 O5 g4 Z' U
[set trust-ok true]
# @' g+ Y, A6 W8 h7 y, cend
5 p, J7 k/ \- L: H) g5 P# [
4 p0 c7 r% x4 M. E% T& W# \to get-global-proportion
. I9 v2 C, l+ Kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 s* [" u. T/ n6 r/ l- y, }[set global-proportion 0], p" i( u" A' }
[let i 0* F, P7 B7 o, [- P; V% x
let sum-money 0' K( [+ @. N* R
while[ i < people]6 P/ E8 S  _: l# p
[3 W0 J" {9 @: @. |
if( length (item i4 o$ _2 A# q3 x( b; R& ?6 D8 A/ d6 W
[trade-record-all] of customer) > 3 )
5 Z/ t6 H- \% p* E/ M2 y4 ]
[
- p% b3 z5 v5 l3 r$ vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))  {# Y1 T7 O  W& ~! a
]2 u3 R, K5 P: t' F
]! u; ]' ?" M" X
let j 0! r; v+ S1 E" G$ p1 I
let note 0, Z5 Y, I/ V5 U4 r2 Y! Z) q
while[ j < people]
3 Z2 N2 y6 c% i" }! T5 ][2 \8 C, N; `, [' C
if( length (item i. m5 ^. S" x% i( U! |- Y
[trade-record-all] of customer) > 3 )

& K) `5 q- ^0 k& P6 N, F) F9 A' Y[
6 Y( R" J2 h5 ^$ tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 k8 c+ M3 S7 N) K8 K1 _6 B* Y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* ]+ t* ?% i% B2 k3 [2 d
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ r$ p& y2 b) o  m
]
$ J9 a, Z+ i. M$ h2 \]! v! |2 v+ G5 V
set global-proportion note' c* w6 s3 Z$ D4 a4 \
]
% F* M3 U: s0 O$ Yend
3 W  d$ _7 p& S9 Y% h/ O
7 c. t8 N3 m$ g! ~/ l) kto do-trade' B# ^6 `, u2 r2 o! E
;;
这个过程实际上是给双方作出评价的过程: v4 ^$ w* X; I' F0 ^. _+ u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  R% ?( Y. f# [1 W/ j1 B7 R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* t( d% H4 S5 r% d6 N* K" ]8 Eset trade-record-current lput(timer) trade-record-current
1 u5 q$ n& Y4 x& U;;
评价时间" a) W. a1 ?/ u( R( l+ G1 a3 c2 n, I9 y
ask myself [
, e/ r# r( w) v8 yupdate-local-reputation
5 X  ]+ H% @' T/ E3 o  D* ~set trade-record-current lput([local-reputation] of myself) trade-record-current: b, I) o1 F( P" V/ y, n8 ?
]
) d, O" M7 x' [3 mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* K# `7 H. Q* ~3 o" c' o% {
;;
将此次交易的记录加入到trade-record-one
/ A/ _- i/ J1 [- b5 R# t; L  f0 nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# `9 K3 `: z1 x7 x* V7 a* @% p) Ulet note (item 2 trade-record-current )
% Q, A2 e5 d3 O" Nset trade-record-current9 o' q! V. {( V3 s: T" v
(replace-item 2 trade-record-current (item 3 trade-record-current))

% C. F$ t& o6 Y6 [set trade-record-current% s( R4 A, m! J/ x- ?6 B7 G
(replace-item 3 trade-record-current note)
, D* Y3 ?5 z4 @; A/ _4 H0 I0 @, a1 r/ W/ A

* Z, W: u) @4 L  Z6 i( Hask customer [5 F, p( [7 E9 i' I7 P$ z7 Q- F
update-local-reputation
5 P. ^! S9 {% y1 Z. Bset trade-record-current
$ H4 A* Z" m. N4 A( {! ^2 B' T(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 e: [3 |, y, @; W) h- z+ \! i8 y
]* {+ i3 L' t; c5 C$ T& o- {
, B3 K. V0 W7 J& f; p% X
' B& g+ }& `% n. s
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 z' |/ g+ @" x( }* [
- z- t3 t1 m5 P7 b* d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( t# ?- ?8 r8 [& j# F  g3 V& H. B
;;
将此次交易的记录加入到customertrade-record-all* p* t  h9 f2 j3 T
end
8 c' D  @0 f' K9 v7 U* J2 W/ n% H
to update-local-reputation3 k& z+ j% `. A/ x! d$ G: }3 g0 H! w
set [trade-record-one-len] of myself length [trade-record-one] of myself
( W9 Y& h, J" K) f. }! M
; q1 w- p# z% o; `  f1 s) M7 `  B7 E6 g6 C  L( f# N
;;if [trade-record-one-len] of myself > 3
* B( M8 Q0 U  t; ?* ?
update-neighbor-total6 {! Z( s  T2 h( _2 Y6 w
;;
更新邻居节点的数目,在此进行
, ]- ?; {( O6 w% n$ r# X  \8 dlet i 36 A" z# K) m$ z" I  f; `" m8 T
let sum-time 0
- }, |; _! @: n, B9 y7 @; a+ D9 Uwhile[i < [trade-record-one-len] of myself]
- {5 o1 P" P; G% |' d/ y[
5 J0 b, O; g$ h$ Q5 D  e% j! ?4 vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 H( |4 i! y* p9 V; F' n( |/ Kset i1 R" L6 o  [% V% R/ v  K' C; {
( i + 1)

) a; l" b% y" b! {# N- w0 N]
% z+ g" K5 M9 h  olet j 3
6 r9 W0 ^  G4 z! Ylet sum-money 08 {7 @8 t! y% m8 r0 A' X7 ^
while[j < [trade-record-one-len] of myself]# V1 ], \$ f3 q2 M5 N7 ]3 ^
[0 R: s" K' ^. ?" K% ~
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)
' z) w8 X  E; \  v1 Yset j
9 S4 r0 R8 w% e. d; k( j + 1)
* F4 Z+ z+ Q( E  X. e+ l7 S
]
( W% y0 Q1 C" b4 Mlet k 3  \* t& g: }) R# L
let power 0' q8 o) A+ g( z& _
let local 0
* N: k  L, ^2 ?1 t* C8 L- ]while [k <[trade-record-one-len] of myself]0 H) `/ y* ^, _+ r9 O6 N
[- `; k1 v8 L. ^
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) ) }1 @# `2 I# x* u, Y
set k (k + 1): Q) ]0 g; N+ `/ G8 |0 K) N
], e: u1 l1 J* |+ @
set [local-reputation] of myself (local)
6 c7 m0 v6 U& z! v- `end
4 p; V4 }8 O" M) S4 Y0 \+ H) C
to update-neighbor-total
# [# |# v2 T( p" M# Z! O; P4 M! ^+ w
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], z$ {3 M8 s' k8 B$ x

% H: i9 ]) M7 M3 D+ ~$ O& T
! o4 Y9 t; c6 Y  @7 B
end
" ?" p/ O9 r- S: b; X
9 R: W: [/ w+ f$ h8 hto update-credibility-ijl 4 l7 F- H) M, ~2 u' N7 J+ h
- Y' e* u- F6 Z
;;
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。
8 |+ p: b7 x* K/ A6 |let l 0
/ y# J+ ]* L" Ywhile[ l < people ]3 l% H" c7 q( s- i& G* r" }2 N: Y
;;
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! k- K9 U6 s( z
[
& ?0 r* m: @7 R" W/ G- Nlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 \  ^4 |0 S! h; t( W5 f, Cif (trade-record-one-j-l-len > 3)
  d- v: Q8 w2 @- o$ P1 W[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
. V4 M( z2 F; I9 W9 _+ Glet i 3# @4 t  p; \- o: M5 ~
let sum-time 0' i& X7 p3 m% t. S) D  w
while[i < trade-record-one-len]
; {" r. U3 @7 P4 o  x+ L- S" s" a[$ r. n. j1 E% X& m) j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' E' \/ P. j. l. i) Eset i; S$ `2 |; U9 L2 {* q' @
( i + 1)
" M( Y8 @  E8 I/ ]3 X+ t* B0 X
]
2 t: l5 `. E& {6 [% `# m5 Q" h, rlet credibility-i-j-l 0* h4 h9 {$ D* M3 H& p) d: F  r
;;i
评价(jjl的评价)
2 N; z1 U1 s/ U- }+ ^let j 3
' b& q- r3 o/ xlet k 4
/ d% \" Q8 T. N8 S! Uwhile[j < trade-record-one-len]
/ `( L4 ~, i3 d5 W! }  c/ [[
9 ~: y- d8 c6 R4 y$ G# _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
* l% D/ n6 g  tset 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)& a$ G0 q9 b% Q6 \' A0 u
set j
8 d8 S1 S6 z, e( j + 1)

, n% d) t9 J& l/ E]
9 _! Q2 s' r( U9 F, |( z. pset [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 ))
2 T5 g6 ]  Y0 T6 b* K, S  |8 H7 _; d% c2 m+ ~/ t2 J: L

, Q, b/ [, l, c2 e! \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) V$ M$ `2 A8 b  F( U; t;;
及时更新il的评价质量的评价
1 q# ]% u* w1 H+ q; C0 o4 sset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, f3 Q5 ~2 g$ Y! k3 T' _set l (l + 1): {4 _/ G5 u3 Q9 e( J, ?- o
]. V9 _7 D5 x! u: j5 h
end
& o; w* @1 ]% b8 z$ S# j* |; u7 _; i5 X1 n- |/ y4 E
to update-credibility-list- X, _" ~6 _$ A5 A/ b" A% d
let i 0% J2 X+ r; `6 N! s% J6 ?; [' m9 r
while[i < people]0 q5 G# w( q, b* B
[
4 o# R+ k7 j0 ]let j 0
2 ^" n& V' b& R% t# Ilet note 0
& s' [: o) ^4 hlet k 0
  k% ?1 a1 Y# l4 x' c- `;;
计作出过评价的邻居节点的数目& ]& g. }4 n9 W% M; I
while[j < people]
5 n( W* M( W6 D1 a[  z/ f& q  K$ S& h8 i
if (item j( [credibility] of turtle (i + 1)) != -1)
8 [# k7 v1 w4 y  j; Q( q0 p+ q) E;;
判断是否给本turtle的评价质量做出过评价的节点
! |) b+ F- _) v[set note (note + item j ([credibility]of turtle (i + 1)))' _9 v- Y- j+ ?/ b- K$ W# a" H& J* U8 A. @
;;*(exp (-(people - 2)))/(people - 2))]
+ E& _# |' ^/ w8 u* Z8 g
set k (k + 1)6 j: J' }" k3 J, P
]5 {# e( D5 |0 F1 l
set j (j + 1)
" `" R! z2 `  l1 g]: x" p+ a0 K. ]
set note (note *(exp (- (1 / k)))/ k)* q9 `6 ?; ^" Y4 p( y
set credibility-list (replace-item i credibility-list note)( g; E0 H+ c6 ~) s2 u- T& d
set i (i + 1)
& \- Q/ b5 p) e) ~* ~0 x], N3 E$ p: Y1 x% q- w/ ?
end
( C2 D# M- \. V% E; H
6 w$ i) j  H6 c* w  s- Ito update-global-reputation-list
. d( D  y5 U# ?! Qlet j 0
: l9 r, I  D! c2 U7 \4 Fwhile[j < people]  K# N( M* s. C$ K" T. P
[! v! W6 ~; ]/ o! v# t/ S6 ]( P
let new 0
7 G; O' v: @. u. }2 F) m. ~;;
暂存新的一个全局声誉8 d+ ^* T5 A+ o, F0 K
let i 0
1 f- }, i$ a5 m" i. H! J7 Q8 Vlet sum-money 06 ~. \3 O& I+ u1 P: [! M" V1 H
let credibility-money 0) [' O5 \& _/ S& i* \6 Y
while [i < people]
" @. M: T0 b( i* r3 B* m. p[
2 N2 b0 F; P( H: w: G3 Y* Dset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 J: G! Z+ D8 b  f8 a' X6 `) wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% l0 U3 V4 D' W# Yset i (i + 1)
- w0 \* s+ F% t]
3 g3 D. H: m* w! _8 Mlet k 0
( u+ D1 I/ A/ d/ _2 N& _let new1 0
. M" s4 c4 U# j5 Z+ ^while [k < people]3 p# {8 A& Y/ n: N% N& k
[. a* _6 r4 c! e$ O  A4 U* H4 m+ q
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)
+ v8 H9 L, }' I. [3 o: xset k (k + 1)# Y' q2 J: D0 Y0 r  j5 o
]& E) z, Z& d, R( O: E
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) Z; e6 q6 s' U% T
set global-reputation-list (replace-item j global-reputation-list new)& l% a6 J5 o1 z0 D$ s( Y  j9 D
set j (j + 1)
/ W. |, x6 x" j0 l8 M3 j& s* y* o]% ]2 ^! B, g1 N" B& G- U
end
$ w/ U$ U9 ]9 E# I6 h* @0 h3 y+ F: c

$ u: a# J- z6 l: m7 W- V( y! c
0 g! B( I0 O0 r- L9 Qto get-color8 ]( t4 [  o  {  V- h$ _: d

3 O. t& x% R1 p# X; qset color blue

' |4 f& x  P- Q3 @' z7 l4 C- |5 S  I5 cend$ U- N  D1 @5 i! o

7 X( Z8 G' ]# Cto poll-class
' D- U. c$ t, _' R9 g9 kend
3 s% x0 d) `4 V8 Z; z/ V& }, l% f1 B; e$ {% K7 N+ U9 S
to setup-plot16 g7 b" ?) `/ F4 y# l0 G

% c5 A+ x" Q; k  Y$ iset-current-plot "Trends-of-Local-reputation"
: e8 r" x! t5 ]

. I9 e9 Z, y5 ?! d; g8 Mset-plot-x-range 0 xmax
" M  ^( m1 T4 |* x  C* S
" h% f' _  D! i" _. u
set-plot-y-range 0.0 ymax

) c; ~5 e& s9 ~6 @end
: T9 H& r( n" G% ^
/ ^* Z1 g# l' B: ?! i2 kto setup-plot2% D6 J3 d1 e8 C
4 A" _- Y4 b. C( F/ v
set-current-plot "Trends-of-global-reputation"

0 h! U0 D1 ?8 X$ i( X, O8 q! x; w1 w3 w+ Q4 a. w3 n& P2 J
set-plot-x-range 0 xmax

* T, _5 a$ ~9 d8 t$ W
# t1 a# @' ]/ F+ R# e$ C$ ~8 a2 Qset-plot-y-range 0.0 ymax

8 |+ [" l: d0 d* K: iend
, v& X2 `' `& [7 b% B, F8 X# g- v# v0 }( J
to setup-plot3# m0 x$ k2 o( t6 E% [
/ m8 A+ ^5 x3 x  [$ {( H
set-current-plot "Trends-of-credibility"
& \- {0 T! l; u0 {

3 D4 m2 q6 A' W" K; gset-plot-x-range 0 xmax

0 x) c$ H# j0 G. ^& \; C6 X
5 W0 y* j2 U- I1 L  L  @0 Tset-plot-y-range 0.0 ymax
, z% g$ ^, k! o
end# P" p  h% N' K2 F, t6 D! d5 C

8 Q. Y& t" f1 z, Xto do-plots1 b% ^. m9 _7 i, H2 g: x7 f
set-current-plot "Trends-of-Local-reputation"
3 I* N; _' H5 n+ u# K7 Kset-current-plot-pen "Honest service"+ Y, S8 b( [8 J  {- ^2 S
end, b2 u- S5 e! }. U6 G, H0 ~
% }1 b0 q4 f# r. Y& D( @
[ 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.0 q' d* ?: r0 L( x  q) c: d

! q6 L2 W1 B- O+ k7 k9 u: o. D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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