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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:; C) p5 C. u. W2 X+ Y8 n9 h+ E) I
to do-business
+ {6 f" @" D* ^# N4 Y rt random 360+ Y" T% U6 v/ d* o
fd 1
. i. l, `6 t5 K! @8 M ifelse(other turtles-here != nobody)[
; C/ ~) E' |. C; U   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., n) W- e3 L" z6 _+ |4 Z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 Y4 P1 ]& G8 @8 ]# z  @6 D
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* S  g# M5 w) Q8 D& J/ i) D   set [trade-record-one-len] of self length [trade-record-one] of self
  i" d+ w: b7 N9 S- j# s2 U) p   set trade-record-current( list (timer) (random money-upper-limit))% {; P+ h5 q+ @9 [$ a( e7 ^
7 X: t* Y- C+ m/ E5 @, X
问题的提示如下:9 {% O. @5 X/ @' t; ]' s) S

6 u5 q) x* n' i1 a0 ierror while turtle 50 running OF in procedure DO-BUSINESS
1 {4 L3 ^2 `. R3 w. {- X+ f# X  called by procedure GO
: ^1 @* ?9 }, m" v) uOF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 R7 a; J8 W! O
(halted running of go)
* H9 P- ]& g2 w$ |  ~
$ F9 U1 d  }) m* F( {0 y0 i2 n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~~
/ T4 F6 {0 T; X! |+ P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! U5 z7 k1 L6 y
globals[
" i* Z* F/ }8 J2 C; A' G2 bxmax
0 _( @/ u3 ~2 w. Y4 P- l, _3 Yymax
7 D" y2 T: f: \global-reputation-list
' m% S% W$ G1 P2 X6 @$ W) i
, B/ y% a2 `( F( q7 h0 g% f* g$ J$ S;;
每一个turtle的全局声誉都存在此LIST9 m+ j3 r- A& H: b) `4 A
credibility-list% W9 j- }2 q3 e- j( ~, H& \
;;
每一个turtle的评价可信度9 F) S8 _0 @. `' q# ]3 g
honest-service/ h- t- d8 u: Q, W0 r. b% s
unhonest-service4 r5 V* u9 t! i; H* A
oscillation
1 U. o' ~0 F. n) l6 zrand-dynamic
1 o1 P" e: j! l% l' w8 ~( a; d( @]  W- E7 d4 F1 _

* F4 s3 I0 p; V+ Xturtles-own[
+ e: n0 P1 R, ]3 b( [trade-record-all
: N' m: k* c' M" e1 {" k;;a list of lists,
trade-record-one组成! `" l  s1 ~' h1 s( W. ?
trade-record-one; E1 l: k( N( ]
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( m' @; R7 K0 K  L- K2 H5 n" A( z

/ F0 e- ~* c, H9 ?4 _;;[
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]]3 a  I1 C. m" L' I; O/ E
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]" }. T4 j4 X) Q/ N
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
5 D& M7 d2 p  ]; d8 zneighbor-total* ^7 j( W( P1 O0 Z3 ]6 @$ S
;;
记录该turtle的邻居节点的数目% D; x, \6 z+ O/ [: W3 |4 ]
trade-time
, ~5 V+ k  w1 K9 a4 A' Y% a;;
当前发生交易的turtle的交易时间) E1 U) e6 V' J0 k
appraise-give
; W2 M7 H% v9 {;;
当前发生交易时给出的评价
+ V( D+ W1 v& F) _appraise-receive# I* `# W& e2 m: X# A
;;
当前发生交易时收到的评价
' z. U! o- W8 ]! R6 E1 dappraise-time
( I+ e7 ?7 m: l) b( r  v;;
当前发生交易时的评价时间
% J: Q! {7 u0 v$ M; n* P# K/ _5 i! mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉! T6 E5 c% B# _, R9 Z) R$ n
trade-times-total
! H3 C. T+ x! _9 b4 F" p;;
与当前turtle的交易总次数
/ ^! \! r: L0 {- c/ ~trade-money-total
9 ^, M: D& _8 P- N3 D;;
与当前turtle的交易总金额& y3 ]% M0 Z7 i, Z7 D; K
local-reputation
' Q0 e* M! V. D  H( oglobal-reputation
# y' J& L9 C3 i5 o! D% i! R0 Kcredibility5 l% ^* m% J+ X2 h; k# b. G3 [
;;
评价可信度,每次交易后都需要更新: J' J) |8 ?' _
credibility-all  k8 a" i  _4 i
;;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
: F4 c! r/ q# d: A; E; ^! i! D6 K: V
1 o) T! d- U5 d5 }3 o;;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0.59 f* T7 d0 Q7 {" R4 U+ W3 p
credibility-one
) [6 B6 Z  t! s8 [6 I) r% _" q;;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
2 m. P2 C& T" o! @5 |% F- ^! H! Cglobal-proportion) m2 |  _7 s& I1 Z
customer& G# }% T5 E) T
customer-no
) |4 Q1 L4 H4 b5 ctrust-ok
5 I& d0 Y& t# r9 @3 Ztrade-record-one-len;;trade-record-one的长度
  ?7 |6 ?+ c9 U! M) ]: x- Q, B& c]: O0 O8 K9 v+ q

/ g: g; n% f4 E$ f; d9 [: L;;setup procedure
* r$ g0 f5 P# {" m$ `6 T5 U7 V  \$ U" I& `# a
to setup0 Z* I5 L) c, K

" |6 t2 W0 P! k/ a% Kca
4 p4 Q5 U' a$ k. Y8 V' ?2 N

5 L% r5 H9 O5 Z5 S" linitialize-settings

. n+ k; F# l+ c" F) o7 c! y% r' ^' Z. g8 j  T; y8 w7 v
crt people [setup-turtles]

" g0 ?# _: U1 Q$ M' `/ O% `$ R: t: _+ _, ?
reset-timer
% {( c0 O. x1 A3 x1 f
+ d& `' h% S3 l) m9 V7 n
poll-class

% I) h- _5 f% S/ G  z0 N% ~5 w
$ M0 \" p8 X4 m! n! ]4 T, gsetup-plots

/ I0 C7 l% G& ^  g# \/ G7 m
) c9 {# ~6 ~" u1 S* }do-plots

) y4 e% u' q) y! n, y( `: Nend2 U. J+ [: F: a

1 C( r0 D. n6 Ito initialize-settings
5 {9 i- r2 \6 S3 @- K& A0 z# Y
9 m8 Q1 f# s0 Z6 C& W) Qset global-reputation-list []
9 k6 ~# L" p7 j6 q& m

1 a' Z" f( a9 J- V% _8 t  Aset credibility-list n-values people [0.5]

( j8 n6 }, h, S! {2 y, b; s9 [
0 W1 r- E4 Z1 u- ^) ^1 B& oset honest-service 0
- [$ I2 S8 `% t$ W+ L; d

" X, z; f; L' Q2 Mset unhonest-service 0
% ~2 Z' M  O1 g  S

. |% j) `+ e6 N$ ~8 Q6 l6 Fset oscillation 0
+ G4 J" E, g% t
% z( _. v, W  Q: X; A
set rand-dynamic 0

# j. P5 d, b  r/ J+ t  Zend! w7 @% a. H" n+ \; j. h! [
. z8 m; d$ F% ~9 k9 T! S: S
to setup-turtles 9 v2 a1 m, K8 H/ R. y0 Q7 O
set shape "person"
' z' p5 z' b' gsetxy random-xcor random-ycor
, B# y- I& z8 K& r# Zset trade-record-one []
# F. x$ w9 c) K$ V

5 T! ]  E+ ~1 D) O. [set trade-record-all n-values people [(list (? + 1) 0 0)] $ h; ^: ~; e- h( w& k) B

( d: b# |- J( Kset trade-record-current []
( l" K: L' `1 v- nset credibility-receive []# H, i/ w8 }* _& E/ T
set local-reputation 0.5
% K( o* a1 L& T* v) A+ Mset neighbor-total 0
4 q0 Q0 B% n6 [" ~/ Z; h. L# |set trade-times-total 0
9 q& Q8 T1 J! A& r  g; Aset trade-money-total 0
0 S4 [2 u. |$ _set customer nobody
7 ?6 _5 L  e% z( K. r. vset credibility-all n-values people [creat-credibility]
9 H7 r1 A/ V; M% B! t0 `# k; t7 Lset credibility n-values people [-1]7 O2 E- M# ?3 R- M. F
get-color2 P. }! B& G, }) z

0 [5 }$ m* ]) `- }1 q, Nend
  Q1 ^- S3 s: F, l& D9 D3 h: q% C% I3 i- R8 }6 z9 O; I; D
to-report creat-credibility: |2 g+ k6 S6 J7 j# r0 b( S
report n-values people [0.5]! L& J7 S2 N0 M; {1 ?" k  b' K) i
end
9 p) ]% K* v' W1 d& T1 C; D5 W. a0 x7 w) I
to setup-plots$ \* |/ Y, e9 `4 l- P
& c/ x7 {0 y. ]0 p$ y+ l% e# U
set xmax 30
: t6 z0 z+ I1 k7 @, _

0 J8 r4 V% E/ t- p( yset ymax 1.0
1 u: R% J# Q9 A+ E
( B2 \+ Q4 Z! A  t& v. W
clear-all-plots
3 n8 l# ^- B  S

4 G& o' @  z: Wsetup-plot1

/ X" v7 T' Y, h$ J2 _
: w- Y3 N3 j3 y: a, H4 qsetup-plot2

8 U( h: b; ?2 e( P( k3 \" N& ]7 u1 ?! @. @
setup-plot3
/ T) l  W' E6 H# k' ]  R
end( P: F! }4 T) q2 g* v; Z4 I# O
* b: f3 E0 E/ p; j+ E
;;run time procedures
% ]$ G8 a' F+ R. W( r( ]! p' |3 v, s5 q; A8 l
to go2 R" ?+ K( J) m
. V- r3 T) [" N) m( Y
ask turtles [do-business]
8 l" A- C2 \) ?4 a) c
end
/ }! T( F& C9 x2 V+ b
- T% S) c1 O( _* bto do-business ; `2 G, z4 R9 U9 K6 ]. G" W$ O
" J; M( K# o5 R' k0 y  q4 w
; b4 U1 J- |( j$ f% ^3 W) H7 B
rt random 360
, Z( Y5 h  y! o4 Q0 E3 c! G: M4 C

/ O8 q* x+ j9 R( q4 T  Ofd 1

5 D! k  z1 U  J" h5 X: V& Z2 N  @+ }' v3 v' Z: ~
ifelse(other turtles-here != nobody)[
- }  B( H8 {" h0 L( D  z
4 v" k1 O3 J6 U8 v( }
set customer one-of other turtles-here
4 j6 e# ]8 B7 _! m0 }. N% ~

7 `- t, u# W4 r' N;; set [customer] of customer myself

- _2 g, \' y$ ]7 N+ ]2 p
# P2 d- N7 v! F4 f* a9 ?! Iset [trade-record-one] of self item (([who] of customer) - 1)
# W3 j- |9 k  u$ p[trade-record-all]of self
5 g. B$ _( `  S% n8 E7 G;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  ]" |& D# w  ^1 P' m( H% E  t( n$ w. U" w" N
set [trade-record-one] of customer item (([who] of self) - 1)
) n( S' ~/ D; [+ |0 z[trade-record-all]of customer
/ [0 i4 N$ n( A. }  q! y4 k
& r1 c" }" a5 j) K
set [trade-record-one-len] of self length [trade-record-one] of self

/ C6 |5 E( c  H& _8 R. z% i! {( Q' H; C2 q7 l# h+ m8 t" m4 v3 M
set trade-record-current( list (timer) (random money-upper-limit))
* B3 I7 V  H3 `5 {( O5 ?. _

1 \- c4 K2 ?+ V$ D2 o  ~ask self [do-trust]+ [' R) e# G. b3 \# g7 d
;;
先求ij的信任度- \2 L$ r' W# p) Z# j
3 B! ~7 L& G& R; V. e' ?# B5 g
if ([trust-ok] of self)$ F4 ~2 Z9 a; m( M
;;
根据ij的信任度来决定是否与j进行交易[0 @& R1 f/ @- L7 M
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 \3 Y3 p6 Q! c' |* C
1 o: T9 c7 M+ T3 P
[

! s  x6 q3 i. w, Y+ [& T  ?' [! H% S" F/ v
do-trade

0 Z  @8 i- @& m, v* j% r' Y5 v& V' k7 y: }$ D
update-credibility-ijl

9 ]* @# c9 j. s- W" @: h/ Q4 s6 D9 Q4 h
update-credibility-list
# i+ L, E9 l) B: Y; V
. ]3 j) \; l7 V" |$ G
2 y5 a* U' y" T: l# p9 U
update-global-reputation-list
8 g7 ~# ^/ i2 [, z

& q; v8 O  S" A! gpoll-class

# r5 b4 Q" J1 s  f; `. |) ]
1 W: C: C  e- @4 c2 ~get-color

" @6 E" f" c% ~& F6 J) P6 a! `: }4 [+ d( R4 C# l
]]! I5 q8 N1 H5 u. m

& |; U. v! S6 M" B;;
如果所得的信任度满足条件,则进行交易  S6 p5 r) K+ A4 S

: P9 A. r2 O0 w* A' G/ D$ T, }[

+ ^8 n! c$ o% J$ U2 @4 W" z* A
& b) q8 O) l4 w! a1 q* Prt random 360

7 m4 s7 _4 f" k# U8 F+ P: ]9 h7 |, b' _+ l
fd 1
8 x/ k! P1 }# ~: }; U  s2 k3 t0 \1 _
. x/ T- A0 Y) ]5 N" l3 D9 C0 i
]

: G) |0 {( D; s9 [/ c* M
1 \2 b& a" Y6 l+ Q: j/ _end
; K$ o/ l$ d: ~

2 v; `, x  Z7 ~" {" C) t" p% zto do-trust
) A1 K- d: C$ u/ W. `& Bset trust-ok False$ B8 F- C! m# M% T
) n' d# k- \' i/ @6 d
) E/ h/ T% n" y) S$ v/ T& _
let max-trade-times 01 j0 Q) J5 Y6 R) m2 C: ^; i
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# Z" V2 n8 G+ D$ I7 a/ [' \) |
let max-trade-money 0" R( ^7 K4 J' c& {
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% [1 D! @& w3 U1 K4 clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" w6 q" f9 l; @3 v: ^4 o$ Z: C2 m; y- H
$ G2 i5 e* k) U) v; M. C
get-global-proportion0 G; r5 s7 \2 B
let trust-value- J" m& r! A9 T' P  {; f# o
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)

# a9 F( k  W" n4 aif(trust-value > trade-trust-value), m7 b& x  ?+ T# _
[set trust-ok true]# K- b& ?0 `. T) Z6 ?6 }
end* R! S; X, y: ~& {0 X8 S- x/ p- _
; v! |6 v  q/ H8 e
to get-global-proportion
4 F; }- D7 {0 B$ l+ ?' Jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 i) z" L' Z# N4 {0 V. @
[set global-proportion 0]
9 n# I+ A1 ~$ `1 x5 f# u[let i 0
( R1 R! H1 b# v3 q3 Clet sum-money 0
6 @+ g4 V& @, H. l9 w  P) P: k, mwhile[ i < people]. B  n/ i* U- N$ h  I: g1 Q
[
: h0 C7 D$ w! s9 h( }& Tif( length (item i
- ^, H  u. k5 c& T1 t[trade-record-all] of customer) > 3 )
9 b0 H3 S& {7 A# b2 f
[
% Y; o- n# O5 }, r8 f  fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 Y9 h* @9 E  z7 b7 Z7 w( Z
]! s$ h  j; U" I' k8 p+ g% [" ~
]/ h# M) Z3 v& P0 N
let j 0
) t( ?: P* {4 Z2 ulet note 0, o3 M* Q0 H  B
while[ j < people]  V' k1 [; N" n
[
  ?# u( p+ \* nif( length (item i
+ _+ D+ Q2 E' |2 H! T6 Y[trade-record-all] of customer) > 3 )

2 P8 p# Y* Q- g8 ~! l[
) H6 a+ W8 x% _( T& R$ w8 @# jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ c/ V4 {7 J6 N; B7 C/ I- O
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 `! A; c, k- ~! q- ~$ v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. N* F# U0 ]+ e) p]
* o$ R  ^, u. Z' R; ?( Z]
5 v2 T5 O/ c) T; ]* ]6 j3 Wset global-proportion note2 u) w1 Z# o& N; {9 ]6 _/ h
]' b2 U* E, u4 Y  Q9 G  T! D) n( b9 d
end
* C4 l& r( q2 _1 O4 d
% M4 b# C" D% U& j( F. c7 Tto do-trade
# a2 S, x5 F. M;;
这个过程实际上是给双方作出评价的过程
$ C  [: g* j! D- s. k/ I0 ^& Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 D  y$ H" b& _( a3 n7 U% jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& j- q9 K; n! q5 k5 sset trade-record-current lput(timer) trade-record-current' ]. {# |0 _' q
;;
评价时间
+ m$ E: F) X$ a9 _2 gask myself [
9 o& J) h* U; [( l$ nupdate-local-reputation
7 r+ B2 F8 v, d1 R7 lset trade-record-current lput([local-reputation] of myself) trade-record-current
* x( G2 \) J3 I/ s2 @1 ~/ u]( j! P7 F% b3 K* F' E5 i! ^9 Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 w' M& z. m* S! K( L;;
将此次交易的记录加入到trade-record-one
+ `( n: X, H1 Y. {4 |% [8 qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) @( l# x6 C0 Jlet note (item 2 trade-record-current )
) L3 c+ \+ ]) Lset trade-record-current
) M* _+ [" {0 L: K+ Q(replace-item 2 trade-record-current (item 3 trade-record-current))
0 D7 \  Z, i8 l" a
set trade-record-current
$ e! ~' T) S/ s; L3 Q' G+ Q(replace-item 3 trade-record-current note)7 B" v# P, s1 t3 H

' R7 {7 E" G+ Z+ B: f/ k: M# [

) W2 f- v6 `* Y7 ^% A5 h- x6 Eask customer [% J# e2 n9 g* `: ^# `* X9 \
update-local-reputation
- G9 t% ~1 A; k* N: B8 L/ l+ B7 Nset trade-record-current+ z$ W# S9 O! y# i: M- h/ I
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 ^0 c! f2 n, n  B/ m8 U; e( c
]
& _8 t$ c6 t; D6 _$ ]. t
; K( C* `8 y% f# g; `" A

4 L; T( A  o+ s9 |; X5 K3 F, n, C5 Uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 P- M6 \: B0 @
4 }) [1 E! u! \9 r
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* v. C' q5 a# |" u- L  n9 G, E: _
;;
将此次交易的记录加入到customertrade-record-all
0 Q' g. I/ r' k; p6 c, c3 R* Yend/ M% h+ ]4 j( h, Q4 Z" E" Y' g

- V$ T+ y2 N) k3 @* j0 ~$ Z$ A% s/ bto update-local-reputation
% ]; O5 ]$ d/ ?# ?9 l  `) [9 @) _1 ~set [trade-record-one-len] of myself length [trade-record-one] of myself
* |5 I5 g: W! G& H6 A: P4 C5 ]8 F2 v6 S2 }8 V
8 @. n3 O8 Q" ?3 f& n& x
;;if [trade-record-one-len] of myself > 3

. B+ b/ a0 ?3 lupdate-neighbor-total
; K& E" \' s8 D6 P;;
更新邻居节点的数目,在此进行. E$ j' ~/ ~2 Y' h& X: a* Y1 {" i
let i 3
; e/ z0 M0 J  u3 A: t! llet sum-time 0
* D2 I4 |6 l1 `$ ]2 _- _while[i < [trade-record-one-len] of myself]' x) ?2 n- j8 v9 z8 @
[
  B, U1 u: Q+ P; ?" p; w; f% v  kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). i( L6 C1 S  C; D
set i1 b" r' i: c3 N
( i + 1)
! k* i1 f) J" L  W7 _4 M3 i
]
9 Q, b3 i' [6 r. k* u6 |# g, T) mlet j 3
% U8 g) H, U2 a$ h6 {let sum-money 0
3 c# d2 i, b1 w4 ewhile[j < [trade-record-one-len] of myself]
9 r8 s8 f% ^4 F8 Y3 a$ U6 C[
) c- N( a9 i4 bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)2 F9 T! q( @& Z' @9 R1 V. A
set j
$ @0 w! q4 V( k; l( j + 1)
, h( E3 `: B0 t( ^  j+ q
]
! X8 b& r& S4 A1 @  ?; ilet k 3, q8 V/ @& m# Q) ^
let power 0! N3 W; d/ o8 w- l3 k  |
let local 0
6 K0 T3 G6 n, U4 [while [k <[trade-record-one-len] of myself]
4 s2 ?/ x: }( y[5 A' I( Q6 d7 z$ J' w& G
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)
& o# h  U& p" r/ x+ [set k (k + 1)
9 l" k4 {; h& {$ E6 a: F) V- O4 Z, X]
5 S3 S" A. p  p/ Gset [local-reputation] of myself (local)
3 _! z' i3 e/ K1 [* kend) ^0 Q2 P- \) v
: V' d; @3 Y4 D6 v% ~( [" G; x2 F
to update-neighbor-total" ~% a5 b% Z! g& H/ B5 ^
% A# f" y" R* |( d5 u8 O! \
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- a" k6 @$ k; I( D; M

7 o! t4 u1 X; }8 Z# ]+ z

' A) O# i: ]/ P* Fend* m6 u6 l& C8 r4 Y/ K
% u* U4 U$ n5 }: {' o1 u
to update-credibility-ijl / t# ^2 z' @6 }/ v
% K5 ]6 _+ _) H9 b1 d. C
;;
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。
  ?3 c6 x& W7 v( n1 l2 V: a  nlet l 0
- a4 m. X& e! Swhile[ l < people ]) b/ D+ m2 `- j9 H: J, F
;;
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
) B4 b! c. J# I2 v1 _# f[" i1 R$ p; T5 }% _/ L3 U
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: v& X! @8 c9 o6 Zif (trade-record-one-j-l-len > 3)
& C9 `6 ]. [0 Y' z! 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  d# U5 R) U2 G( K
let i 3$ S; S) ?. H$ Y
let sum-time 0
0 S% f; j, P7 t2 B( O3 `7 |4 kwhile[i < trade-record-one-len]8 R: |" W5 G. k0 {- U
[  R. v  O& }2 f) X
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 P, C5 u; O9 D  Dset i
6 B& B6 Q( U/ N& L$ B( i + 1)

$ T0 N. c9 N6 S9 O( {, _]
2 \3 E, b% H# V# I# Klet credibility-i-j-l 0
1 c" |, z7 a! o# Z  w% M) U;;i
评价(jjl的评价)
# q3 K; G! u+ x! ?let j 37 J, K4 B6 {6 @% a7 R+ B9 M
let k 40 I9 |+ m. ?, R$ a. u$ q
while[j < trade-record-one-len]4 I3 Y; k) c  Z' `" }7 W
[
- }" G, I& U) u" X  @( z+ M* ~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
. K' ~2 k# Z5 n& @$ \3 T( B: w" {/ S$ \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)
7 Z0 I5 L& t7 N/ Aset j
, l5 j7 y! y  H5 ~9 s( j + 1)
/ J% d1 a  S# T  M$ y' o
]* f8 D9 t. Z2 d# c! I0 u; e
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 ))* }& w) c# d# s# R
8 V/ w, |# m0 Q7 i
3 l/ N" \# b; U9 B/ _+ @) N
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 r* s' w+ {' a# x
;;
及时更新il的评价质量的评价% _) x5 s0 ]2 `; N. \! Z
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% S& j4 U! Z- E
set l (l + 1)
" e, g. s& y; z& E3 @! |5 V7 {/ P. {]
2 d+ d: i; |" P% U! m+ Aend& h, m5 ?( L3 N% e

$ `0 P: E: \" y4 Z0 X- Y" ?7 N  gto update-credibility-list
; ?5 R( {9 z5 U; Slet i 0
5 y3 J$ l' o  X1 bwhile[i < people]
$ f, Q- l1 m, m* b[5 c3 C" c6 l' P- n/ ?2 Y. r
let j 0/ R* _* j% V; \4 J
let note 0, C4 G) w, z1 s& [
let k 0" b; S* {3 @  L
;;
计作出过评价的邻居节点的数目/ x. o, Z4 O( |+ U! \8 w
while[j < people]
$ H6 S* ~/ |+ z/ [! U4 ~6 V8 Q[
- P- d0 z% Q3 d) S# sif (item j( [credibility] of turtle (i + 1)) != -1). {; K9 Q$ J. i6 ^2 W) D
;;
判断是否给本turtle的评价质量做出过评价的节点0 F' w0 J& |2 ]2 f6 M  N
[set note (note + item j ([credibility]of turtle (i + 1)))
! ], V. `7 v0 r6 w6 _* n;;*(exp (-(people - 2)))/(people - 2))]
' i2 J! ?4 ]9 U0 m6 ]( b$ A- f, f
set k (k + 1)( w* L  ~/ E8 ]! M+ ~6 T" C. n
]- n8 O" u/ l5 `0 a! G+ ?
set j (j + 1)
5 a. V, F7 E- u2 U]& k9 E6 d' R( a/ h7 c! T( @/ N
set note (note *(exp (- (1 / k)))/ k)
  f% z* ~2 g5 r  Iset credibility-list (replace-item i credibility-list note)! m- j! p' m# D. d; d9 w4 @$ l
set i (i + 1)9 _/ U) I$ n* K0 v$ c) a/ @( ^
]5 h7 z& o3 @( c$ \
end9 X8 {! J+ Y3 u" K9 ^. e$ M

: V  L1 T0 ^& M) Q" Fto update-global-reputation-list+ ^  p: J) Y/ o! @# g1 `# X
let j 0
% L  U# {6 L/ \while[j < people]8 h! ^: q, U/ y0 _- f
[9 X& ^" F: R6 R  Q2 b' U) f& H
let new 0: I+ O$ o% u" P/ D' _
;;
暂存新的一个全局声誉
2 |/ A. ^! h& m) i1 x) j) g5 tlet i 0
+ x8 d( {0 {# U# ^5 x1 b) Ilet sum-money 0
4 Q8 D! }1 o. `  n- c" K& Rlet credibility-money 0
  {, J( D& `6 n7 m  C* Wwhile [i < people]4 a* y# w( f* `; S8 m$ w- d; c; j/ D
[
* s4 P) l$ d: i# n& ~4 Nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 m- w( H8 Q4 s) S9 D0 K6 w
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 P: ]3 ]& h/ S! n( @7 \
set i (i + 1): v  N. c; d# o& X1 x  M& c0 s* z
]
: X" E2 O, Z7 c0 W) nlet k 01 B- C1 q8 Q- T* n' h
let new1 0
% ^2 I/ T7 W& p4 f; i6 Xwhile [k < people]1 x! _2 F9 J+ F) X/ q
[* T: H6 D5 p1 `' V0 f' z" T
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)8 `* E. a# b- Q1 o; g
set k (k + 1)
% a, w- c. M% l+ |  |]" _7 {& D$ V7 F* }. e3 [, I3 D
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 m  v8 G9 K8 Q1 b+ L& E7 eset global-reputation-list (replace-item j global-reputation-list new)3 g  L. ?' G. K% i  ~
set j (j + 1)# N- _7 p, T  W1 Y/ M; Q
]
: O) @( d0 M4 d3 i  R) Eend
: y! O' M! @. ~, j
5 @# n3 K4 e/ {% r2 F* \' O& l: ]

) n$ v- g% J2 A6 p" fto get-color
( v& L8 l3 I1 D, C
7 y( C9 {, |+ d1 v! Tset color blue
4 A% H$ w( R8 k& |7 c
end  }3 A0 d& O9 M) k3 o( q+ m

1 w9 C3 e# q. ^& H" {5 tto poll-class/ w0 ~& _% E% Q' K, A  _: \. z
end
+ w3 P) O3 ^9 Z6 {/ [" C! @, X7 c# u% @5 V9 Q$ B  O
to setup-plot1
  M6 n" ~7 B$ R: j: @; {9 j& Y  G; v" B# L! c
set-current-plot "Trends-of-Local-reputation"
! Y# J8 g9 j) J3 e, @2 I. \( L
" I3 ~+ `6 \: U2 x
set-plot-x-range 0 xmax

5 I; X" e* Z# o% a  X0 U" S
; k4 ^. R* X( s6 B* `2 v: Oset-plot-y-range 0.0 ymax

, j6 _9 W2 q% |& \# Oend
. C# k! {0 |  z! s$ O# E2 s/ X
* r' t5 U) n# C' c  K$ n0 y; Kto setup-plot2% `( F" V! g0 x# r, D0 D4 w1 s# J  T

% C3 e) m& P& _+ d' tset-current-plot "Trends-of-global-reputation"

) m' O' s( \0 q% D5 N1 |( r$ [" N: @9 y* z! D
set-plot-x-range 0 xmax

. d; i% q0 O* F- t$ w
; C4 L* U5 K& s& I9 E3 d0 ]set-plot-y-range 0.0 ymax
, V8 V/ |* e( y* D1 Y( B+ z
end
) A" G2 h( g6 S* d$ }+ j# H! P, _+ N; @
to setup-plot3) N% m( ^# v9 U% E1 b) ?
* D) H8 g; d' s7 J* F
set-current-plot "Trends-of-credibility"

) ^' w; @: B7 v+ G* [* U; F) m' t, _
set-plot-x-range 0 xmax

* x) G  M3 N( b0 F4 n% s
3 E0 W# x, B- h7 ~& \7 U% Kset-plot-y-range 0.0 ymax

# o0 a0 K6 \3 L1 |end
8 Z! G1 T3 P4 R- R0 _  J# j# g" {; z! p+ s0 \; W( N- R& D& L
to do-plots' F$ a& W+ g' n: T0 X1 q
set-current-plot "Trends-of-Local-reputation"
& A  p' u8 r- E' Jset-current-plot-pen "Honest service"
2 n- n0 n. X- I8 kend, |) O, e2 u8 j! V  k9 u7 L1 t

, Y5 L% q- P7 o* E: ~[ 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 w( r" E7 C9 l7 c$ t% j; x
, T1 A8 L4 R% N9 U4 q% F
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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