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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:  E  V0 M; K. U9 g) ~4 ~
to do-business ) d! M" O$ U$ E* V# ]9 B: y
rt random 360( u% o' v! M3 y3 y- `
fd 1$ v* D/ R9 i6 o
ifelse(other turtles-here != nobody)[) \1 F: I! p4 U/ L9 ^/ v7 r
   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., a/ O& Y" M  q6 d/ b  M+ L
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 \# X7 i% _% ?2 ]  i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
/ g$ B: K6 s  B) ?% H& K& d) f  R; d   set [trade-record-one-len] of self length [trade-record-one] of self! S9 \; `! |1 }1 q! X; ?2 @
   set trade-record-current( list (timer) (random money-upper-limit))
6 B9 ?* i; m. q! N8 A* e( W; I" R
问题的提示如下:
6 [( \. H9 z2 C# ?$ ~+ e5 B0 D, b, w! c9 W$ b6 x' G% s* j! }) Z1 n
error while turtle 50 running OF in procedure DO-BUSINESS
( q; E% I8 X0 D  called by procedure GO
1 u5 \- F' V8 `$ d! W- \- xOF expected input to be a turtle agentset or turtle but got NOBODY instead.
" p3 d) H3 e' k2 n
(halted running of go)
+ n1 [& H& G! P' _' l
  Q7 ?: E# g. A3 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~~
* z) u4 `. D+ x: X1 h; u8 j* G1 `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* y9 L) O; B/ M$ A/ K
globals[2 o+ u$ r/ s) S8 X
xmax
( l# Q0 [' \0 n1 ?, i3 Uymax  b! T: R2 K) x" z$ ~% U# g
global-reputation-list% Y3 M8 n- q  m
, t, H! @) p8 \. E) r8 J6 U6 j
;;
每一个turtle的全局声誉都存在此LIST
1 a% t& M6 ?4 k& Xcredibility-list
6 S( G( ~; U4 Y;;
每一个turtle的评价可信度/ W. j) s7 b) t
honest-service
9 ~3 g$ a! N( t+ |0 Sunhonest-service! R8 H) E: ~; W
oscillation
4 i9 y( ~: o/ H- orand-dynamic6 v( M2 K. ]0 ~6 k9 W6 e
]
& Q* ?; u; ]4 W' n8 l, K, m7 A1 K4 ^. V% h- z! V* J
turtles-own[
6 Z- ?4 e$ Y, b6 {, jtrade-record-all  ]! C0 [. z# F7 F" R7 L
;;a list of lists,
trade-record-one组成( e5 `. T8 E$ I( O( I! m6 H% s1 `
trade-record-one8 H( Q" m- W% o& L" e& {* a/ O
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- k  G5 x1 f2 ~' s. J8 J

2 K. P8 D5 W6 V$ |/ w;;[
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]]
4 o1 q. y) i" Ytrade-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]# y8 N6 a/ R2 R. R, z) h+ v
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list7 }9 v& A% _  D& g
neighbor-total
" N3 n6 m" H) B& h3 o, l6 I;;
记录该turtle的邻居节点的数目% @) v+ }) B. Y* v& i! s
trade-time2 `9 `2 F% n" n( T% }$ {- v/ ^8 @% a% P
;;
当前发生交易的turtle的交易时间
( K9 d- {4 m* P4 F" {appraise-give- ^/ ^9 T' i- n. r
;;
当前发生交易时给出的评价* U/ A* M0 r& d& O6 E4 P  H2 t: K0 h
appraise-receive) e* e2 ?! C# [1 Z* ~. I
;;
当前发生交易时收到的评价6 y9 P* [+ Q0 [( _6 R
appraise-time
) b7 O5 {" c' M+ d' L5 {. h' b;;
当前发生交易时的评价时间- s0 `! a: d4 d# @6 Z
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
) P( }+ s1 H* s$ \' _trade-times-total
, C+ v, C6 a& s;;
与当前turtle的交易总次数
! f1 k( @9 A# x$ a: Qtrade-money-total, t6 N# L, H. Z( N# v1 {( |
;;
与当前turtle的交易总金额* a# V% v9 J6 l
local-reputation
* M/ Y, j( `' F, c. G; \$ [global-reputation& S$ p) w1 M, l
credibility
7 `6 s5 v5 L$ [; S9 _1 `7 K;;
评价可信度,每次交易后都需要更新
6 n1 U" C  \3 V7 B- @/ [credibility-all3 f9 k1 A0 }) p% |; [
;;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
4 x: f6 Y( D+ E- Q8 L+ _
( o0 i. u) }& H* J- r- G( r, h: q;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5! C% R$ V$ ^+ s( J- n
credibility-one5 g! s5 {" J0 V' u4 U( ]! c- Y6 D( J
;;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  N8 _5 |. g, O7 @+ n- [
global-proportion
+ J) w6 H2 J. n2 V1 Q! p6 ]customer
5 L! F; w! {$ e) v9 U! Z, t& Lcustomer-no. E( P. g3 E" {+ Q8 Y7 c9 ~0 m+ K0 u
trust-ok
9 L5 P& o" C9 `, Z8 Gtrade-record-one-len;;trade-record-one的长度, ^: Z1 C: t+ y/ ?* s4 P( ?$ U, N! K1 ?
]2 C# I9 M' a! ?" C
* ^( @4 R: H- N* C
;;setup procedure7 A  R* T5 {" a7 {) z
1 P  ]. ?, M$ O* v/ w0 H! J: @
to setup
! E% P; G' n% ]; l* q# r5 U! F6 ]9 g5 e8 R; }8 h
ca

6 m& n, @1 E& k8 W' T! c; \7 Y7 b
" e5 [& x; V& u2 U8 g/ `) }initialize-settings
7 ^! v- G3 J, c# [" M

( n/ e" P4 y/ v4 d( r, @5 a+ Lcrt people [setup-turtles]

* X- u3 B' G& {1 \8 a. J2 [5 L9 E' }  t6 K8 S6 @
reset-timer
2 j7 }% a$ |/ y5 ~: Z! B
/ J+ ~1 v, Y" E8 s8 f
poll-class

! A% d4 K" w& j+ r$ p7 ^0 O% o. ^- F9 w. N
setup-plots

2 w' V( l7 [( ?& F  U, s; \9 o  _4 n! O) U, [" x( U2 F
do-plots
  \7 Q3 _+ U3 P& h3 ~
end! n: J% b* v+ V
7 k( l) c; J& z( J
to initialize-settings+ V) v# W+ l' u6 K  D; g1 {

+ u# L3 \. p- Kset global-reputation-list []
9 B2 j6 C& O" b' v0 O
' d0 N0 m/ R' R, F0 T; \* C
set credibility-list n-values people [0.5]

* W0 S/ p" R! V5 T. \4 I4 k
) h1 G/ N. z2 I7 T  F0 a% x4 Vset honest-service 0
; \' B  x, O7 S6 _/ @2 O( C' y( `

8 E: {4 W, X- W" N" a& `set unhonest-service 0
+ h9 Q1 h3 z) e

  b7 D' G; A& h) hset oscillation 0

- M: B! D* v7 D- g6 [7 h: p$ o! N1 A
set rand-dynamic 0
0 Q# _; @4 D6 K5 t% O
end! u$ Y/ t6 l% U# N4 v4 T8 Y: h

  |5 i, h  z( f# K7 ?. ]7 O6 bto setup-turtles
, s6 X2 _4 X2 u" K$ S* vset shape "person"
/ G) f: y  s7 m' R& D+ T+ Dsetxy random-xcor random-ycor0 ^! x1 e. x. b( s1 e
set trade-record-one [], c* ?( q# S( p

+ ]. H9 p$ ?6 e# C9 x6 t2 J$ yset trade-record-all n-values people [(list (? + 1) 0 0)]
& m/ F6 {3 D+ B% n6 u
: |, V: l- D5 d
set trade-record-current []' Z# T4 C. u; H5 [* U/ S) S
set credibility-receive []
, J1 U$ L- g8 K2 _4 \% Z4 Y( Uset local-reputation 0.5
# E  T! U# A) o5 ~' s  x2 Zset neighbor-total 0
9 Y: ^5 [# M# w5 ~4 {0 G! I- fset trade-times-total 0
4 ~9 A' ~1 k( Z; W1 Q( T% k1 gset trade-money-total 0
! @1 V$ I/ Z4 _% `1 r; S& G. fset customer nobody2 e9 n* }) ]: f; g
set credibility-all n-values people [creat-credibility]" N2 H2 w. `& n
set credibility n-values people [-1]
5 B9 U( _# d: w& s  ^+ oget-color
! }. v. F' C! D; Z7 q; X
* [( R% U) Y0 Z7 k1 J6 O) i! K) U
end! y$ W; ~  A  A- u

1 A% o$ _8 M( @8 D5 v* ]) cto-report creat-credibility# L( z# b5 f1 {1 D
report n-values people [0.5]
, f! T9 O5 E, s8 e: j4 M  B: gend% i2 S+ K7 A* [1 l& k2 y, s& J- G* y: J
  v& S2 T+ r# D1 d# H* @; o$ x) Z
to setup-plots9 J9 ^/ c) `' O- R7 q+ S+ p
6 D& B0 p7 @2 s+ }0 n& h: G
set xmax 30

/ P1 Z0 w/ R* N; V  j
1 K! N5 v, V; s' T3 t/ Xset ymax 1.0

* i+ I7 I0 u/ V7 N/ l0 A5 h( D) I& W! K  r
clear-all-plots
1 A  w1 C6 o" j1 g& Q& D

( ]# H& D+ O2 m( f1 ^/ G# x; Dsetup-plot1

0 X2 m" E& f7 J) `/ |! G; Y& Y1 W( a. x7 ]
setup-plot2
; C2 ?! ]5 @3 I7 p

2 v% O! g; ]. j7 L, e; F6 Y- f. asetup-plot3

5 I! u& y: [& W* }. Jend
$ @6 E4 d% x6 ]- Y8 E- S
+ [9 S& ?: I$ ?7 [% r1 p$ u;;run time procedures
6 }% d* O& ~3 E* ~0 U) ]( I$ \* l2 `
to go
8 F/ \3 `+ q  y, n
* u" i1 n% u2 f7 T9 \/ f0 A0 K" Eask turtles [do-business]
3 i! }; u) M! o+ P
end
( v% U% I# F# N% Z* j) H) ^# Z& z7 a* |: A1 m
to do-business : s+ l4 R; d, r* L$ G

$ J9 S4 Y, T; j5 r+ J! E6 n# e
7 T; j; y2 a; U6 _9 irt random 360

, e% Q. W1 d- Z* M; F* U. n0 _" }- e5 s
fd 1
: x$ J( Z. U% H) q$ ?4 R

5 f  K5 c  {4 [% y& z( B5 Q0 ^ifelse(other turtles-here != nobody)[
# c  k- O3 d1 p8 P* h: _& r  D- x
* f: m- y; l7 |$ P& y& R- `
set customer one-of other turtles-here

2 e$ L# R& S! M4 \' c5 d9 ~' i7 w6 i: P7 [
;; set [customer] of customer myself

" I+ t+ ?& @2 M5 b* [0 f0 H% p
7 H" q5 p- r* \  p+ r  |set [trade-record-one] of self item (([who] of customer) - 1)# o  I4 z9 g3 l: f6 B8 O2 k" Z
[trade-record-all]of self( F0 P0 D; z+ `& T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" @) ^; }$ [3 Q8 T6 X4 Y1 `6 F: {) ]# v. J, C& r/ I
set [trade-record-one] of customer item (([who] of self) - 1)6 ?! u4 V: N7 n2 o% J
[trade-record-all]of customer
6 [5 c+ Q! K# Z: J6 b5 g6 ~) f
  \7 l" i1 r9 V* @6 C
set [trade-record-one-len] of self length [trade-record-one] of self

, ~$ w* T4 {. U5 |7 d1 L' J. o! ^& G: f/ X" J8 R2 N
set trade-record-current( list (timer) (random money-upper-limit))

4 }& d+ |# g- v7 N8 B: ~
1 p( X; j* j& B" G  r: hask self [do-trust]
# A; a/ Y% F* {) Y- |;;
先求ij的信任度. q5 _* z. |0 [8 F6 z' ?
, v) g! H8 A; m2 r5 i( w
if ([trust-ok] of self)
) `: \: }; g3 E1 i$ @% i3 O;;
根据ij的信任度来决定是否与j进行交易[
) }+ ?; z0 j! M8 s6 mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' ]0 K& K$ y' Q" }2 L. y
; I" V- g" B2 J0 \8 T[

& t2 q# B# Z( _. k, R9 S. l
2 k5 a; ?# d) G$ g5 sdo-trade
4 p, z! G( `, e1 n9 `
3 g0 ]* Q2 [2 u5 M" A8 `
update-credibility-ijl

  L7 q8 `9 C9 ?, f' L
; C. L8 ?% Q# t% L/ }7 l. f" aupdate-credibility-list2 ~1 T* _/ N) R; F

( [* E: i1 j; K) Y0 Y4 `& ?: }/ W
; C# p) Y6 l$ }- x& N( x$ J& ~update-global-reputation-list
  A# f4 {9 }! l, G. P% x; K

* z) g" s$ `; m$ b6 I6 _poll-class

2 b. @8 S7 B8 x( R
6 z3 w2 N! ?$ P/ h3 ~get-color

' v/ u( I) d9 }, s/ u! c
6 Y. Z% h9 [; ~. U]]# s" B# x' ~* \( F3 i* s

' u! T  h& k* ?+ S/ K;;
如果所得的信任度满足条件,则进行交易
3 ^! S% U5 }* h' m3 i1 m) c7 ]
7 O6 K/ j' n7 f. P% g; E[
' J& c. \! E/ j4 s1 ?" f, C

5 F' E+ D( v7 K7 e0 J' _rt random 360

9 M# p& G$ G: M( x3 Q7 N/ }- q6 ]4 _5 A& f! e: U) D; Q6 A
fd 1

2 U, l2 `8 N7 E* ^- I$ [) \9 ]5 _7 u3 {+ Q
]

  j; c) z$ b$ u' c, e% p; X, G, z1 e  n* V
end

- l) P' `3 O% `4 f( c0 K  V$ j  `+ D) }
to do-trust & e* D: e6 S5 m
set trust-ok False
/ c- y! D: T. m3 p% D9 {+ P$ I7 r
1 A! ^+ Y8 x) n2 ~: B. W

& x: ]% D; S' }5 C6 T' e) xlet max-trade-times 0( m& @: q! T7 o3 N9 A
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  f7 G! J6 ?, S9 |let max-trade-money 06 p5 Z- G4 l7 F. T( R
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. I; g3 @) D- A" Z$ y2 {
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ y" O  i; |& W/ a2 \1 N

) j" _* V7 M2 F- R/ t% Q5 `
$ X! b6 r" `9 N4 W
get-global-proportion3 }7 g! A. e2 d2 _
let trust-value- H  U) B' \! D: z7 G
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# I/ x3 |/ x* k* Pif(trust-value > trade-trust-value)7 h0 a; y+ f/ R% f6 P% G
[set trust-ok true]% A( o  G2 Z$ ^, }
end
) \: r( u# _/ `
4 Q3 Y: ^& ]- B8 Ito get-global-proportion& s3 w' k) {8 g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 [! ^* s9 k' ]( z' J[set global-proportion 0]9 k( J4 ^( _2 z% D2 l7 V
[let i 0. ]" L8 [, m# d( o0 h. G+ ^. }& |
let sum-money 0
' c% y4 d8 i- ?3 jwhile[ i < people]/ r7 z% ^. ^, [! C
[4 C2 u5 e$ H. U9 b+ z. n
if( length (item i
6 k' |5 L. A% l[trade-record-all] of customer) > 3 )

, o* Y" \8 j& h- ?" ^8 w[
! _8 H: Q9 v0 u& F# b# aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))- d+ p3 J3 \6 I# D6 E3 s! O
]' ?4 ^( k0 p7 G0 H$ M+ \8 Q$ d
]
9 l- [5 u& g" E3 r7 Blet j 00 k# O2 U0 |2 ]
let note 0' g3 A' i% ?# U  k8 ^0 D0 a
while[ j < people]
' Z0 t+ _8 B7 d& I[" w* r8 U( M% u  |0 G& }" D% Z6 K$ b
if( length (item i
1 R, ~* O% X, m7 E# \% }[trade-record-all] of customer) > 3 )

4 C& a7 f7 S" |/ h& _/ R# n; Z[
( p1 p* y' L, Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. n9 [6 D# ^/ p% ?: n[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- |2 G  w3 T' }
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: X% H' i! V/ `  J( n5 c]
: a2 K  I' E! o" |: E0 _2 U]1 E3 ]/ l% S( q5 W8 ~& S
set global-proportion note
; f5 t5 B! W8 g, |0 x  a0 A2 C]  f: r& [" T9 M$ |0 t! J# @/ L
end
7 V' I  X3 d- W
9 z( r3 p8 N2 C8 q, c" n! jto do-trade
7 o- P( v4 _1 j1 S" p! J) H;;
这个过程实际上是给双方作出评价的过程
* C4 E, F- d  p# J, mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 u# ?9 z$ H9 P4 a5 h* W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  w6 W! s% G2 l2 W' Sset trade-record-current lput(timer) trade-record-current
8 P% q: F% D4 d$ C- ]2 n, y8 m/ @;;
评价时间8 y1 o) D8 _" W( u  a) ?/ X
ask myself [
- b- x/ j8 f6 Uupdate-local-reputation- O* {3 Q4 u4 K9 b* `
set trade-record-current lput([local-reputation] of myself) trade-record-current
9 i0 A5 S! ~5 n]5 M+ q  X* r! z2 ]2 {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, [) o; f7 r# W4 y# {. _
;;
将此次交易的记录加入到trade-record-one
# i, }( ~" `" lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* g& d0 Q* N" a1 R. O  ~" F
let note (item 2 trade-record-current )
, M2 h" I; X2 c/ K: I8 m4 u4 Lset trade-record-current3 m* Z4 F1 G, D; t' W/ I5 W2 P
(replace-item 2 trade-record-current (item 3 trade-record-current))

! }9 C. j, h3 ]) M! [5 r! j" ]4 kset trade-record-current$ U/ \1 ^* N  ]; v1 `- n9 S; n' t  L
(replace-item 3 trade-record-current note)) G, c* p# ]" T1 \5 A
* a4 z- _( k6 M+ L1 c. [

1 m0 x0 R# |# ?1 b; l3 l* yask customer [
* f- {) g1 W% m) E( z( ]update-local-reputation
9 K3 ?7 s" v/ u+ b4 ~8 `set trade-record-current
* o1 W& f" P/ r/ r/ t(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 t" {  @8 T7 b) W9 z1 e2 P7 ^  O
]
$ a' V* [3 S9 }& C* r( {" u9 t9 b, p2 i6 i
( A) `" m8 L2 _
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, \! W: R% n& x0 e& z

# q% ~) q( a5 B/ zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ o  Y% z% `  A;;
将此次交易的记录加入到customertrade-record-all8 k* o/ t2 u: v9 O$ ]
end
! `0 L# o* o4 e! f# p- ^5 l1 B8 [( W1 \) O' W$ p
to update-local-reputation* @2 P4 Z' I) t0 N9 c5 {9 \7 M
set [trade-record-one-len] of myself length [trade-record-one] of myself
6 s, O8 a: a- }; k; H8 @- z# n& l
( D0 i% z; o9 o- h2 F0 y
' {2 x5 j( k3 }& _* R* |/ i;;if [trade-record-one-len] of myself > 3
! q4 A9 r' r. J4 K" \0 z) g  e) D
update-neighbor-total
! l4 c4 m9 s9 R- ^;;
更新邻居节点的数目,在此进行
$ J7 j% U* Z. E# i) @, j6 @let i 36 L- R% U6 e2 w# B: _7 |/ k
let sum-time 0$ R) A0 m9 B9 L% }( _
while[i < [trade-record-one-len] of myself]
5 p% }6 P$ I7 |$ Z, |: b0 S[4 a" |+ x! X$ d0 _8 ^7 A( O
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) ?) \; M- Y$ Y# R$ K
set i$ S1 l" T' A$ @4 L
( i + 1)
) Y  k$ G5 O* \$ i* c
]
$ f7 `8 n* Q8 p4 ~- y# k6 K* olet j 3
& I+ ~' h! \) @& T' o: Rlet sum-money 0
- V$ n4 f) e9 z! Rwhile[j < [trade-record-one-len] of myself]. ?" j/ k. }5 G: A! Y
[
1 K6 Z7 m& u' x; m" Zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)8 Q" V1 s) _8 x, W7 w
set j
2 @% _9 p- y& O0 @) [3 T( j + 1)
  I( s8 [' S9 _  ^0 W# T( E
]5 L  X8 F* n7 ~& t/ |& x8 {) f
let k 3
6 i, h6 U" i  s  Klet power 0
  I7 Z5 l8 G2 Q! K8 n! L" A! B5 Hlet local 0  a! `8 r7 |; U  l
while [k <[trade-record-one-len] of myself]
8 y/ b% S+ |+ l5 E* O) s[8 W! b# F& H' n6 T
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)
! d  e# X( ^. v0 y# Vset k (k + 1)
: H, R8 c9 T2 D3 w]
6 D' f: k$ c" j* }$ u" n* R1 Hset [local-reputation] of myself (local)
% N5 l' r" P) `1 S# `. ^$ Dend
! U9 t0 Z+ i0 e* l5 |0 @5 c# Y( m2 c  M( b1 n8 l; h' m$ B. V
to update-neighbor-total
1 V5 V& C% ~( \6 k9 C3 \" w7 n9 E7 ^" ~3 p4 C$ J
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# E8 }7 r% l4 a  B% Z. J
; Z" E& k2 \: a+ {2 F2 }

7 k# E! L  |) Uend3 D' H% g- y( N: f

7 x& f9 ]& T1 [* [to update-credibility-ijl
9 O6 h( m* s" H, C7 ]% p* @: f' m/ O) ~; L  X: O
;;
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。$ s1 @6 y5 e. a9 f# ?& [$ C
let l 0
9 S. o3 P9 r! r& r3 Uwhile[ l < people ]
2 [8 [2 d) b" P, u. ~8 |/ Q;;
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
" v/ p' l3 I  Z2 f5 q/ h, V$ E7 P+ A[
' L* q/ f3 m1 g% o' Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer); Y+ Q5 _/ h" W; \' E* R  J1 B
if (trade-record-one-j-l-len > 3)" D4 b: ^4 Q  t9 D2 C! M' k" z
[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
0 o6 @$ Z$ j" s7 ?' P* P/ P) Glet i 3% \( Z4 k, w+ `# z* n9 a$ X# S
let sum-time 0
1 X/ m$ o$ j9 x) y+ |while[i < trade-record-one-len]
, W6 L- L. _! p2 y; j5 E0 J0 c! B6 H% U[
& h1 f7 X! ]/ Y1 H4 Zset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): f" q( k: T6 E) r5 X6 O7 G7 x
set i
6 K4 x4 L6 |8 J) N1 {9 B( i + 1)
7 p7 I: M* ~( z! Z  \4 n
]
! {# ]: Q6 R, k. w) h: m9 S4 I1 Hlet credibility-i-j-l 0
# {( v0 M& a, m+ {2 n1 ~;;i
评价(jjl的评价)
# A; E5 m& s5 r2 l3 S* k$ q2 k& I, @let j 30 B( ~8 L0 I& J! S
let k 4
9 o7 S8 a9 j& }; ^while[j < trade-record-one-len]
9 W8 v& i1 K( s3 ], F6 q8 N[
+ O  ]. c$ Q& Z- s8 l. hwhile [((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! G- _% y9 M) ]. i: l) h
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)5 c  p& G3 U+ p, R8 B3 b- }4 O7 x/ b
set j
0 F* I7 B( K/ N. H  }: O% [& D( j + 1)
' @1 a% g4 B( }! S1 L
]% U6 h( S$ v4 Z2 ~- [$ j4 f
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 ))  G2 W2 e$ o6 y* B+ E& _, g
1 F; U* C4 a: {" R# _
5 N( [( F/ U% U  A6 c" U
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! B- }8 J& B$ i
;;
及时更新il的评价质量的评价  y  w- z3 d5 _/ B" j; L
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 h% W, U0 A! ]/ Iset l (l + 1)/ }$ z% G# g. O8 O
]
2 B8 O) Y' s# P8 ~: {- \end+ y3 ?. |1 B* ^. N6 n
0 b$ `  i! y( j  s2 c6 r0 ~# o- X
to update-credibility-list
* o2 E- \- {$ W% E( G+ ~$ g2 Glet i 0
2 l8 f5 |2 r6 P( l9 \9 E( Twhile[i < people]
0 A9 Q: P) z# j; k% s5 a! j[
# }6 E% D' x4 C3 \- L' `let j 0
% t9 Z7 C9 q# W2 _  }let note 0
+ l' a  j. \- D1 glet k 0
9 B2 L& z1 k# w4 X. ^1 s2 L;;
计作出过评价的邻居节点的数目+ `; o- m8 Y& X4 @' [. E6 p
while[j < people]
# y, P: ^. ?+ s& M& P[
! A. P0 Z6 p( G2 f% n5 N0 ?' yif (item j( [credibility] of turtle (i + 1)) != -1)
7 E  O9 {* k% L/ r3 U;;
判断是否给本turtle的评价质量做出过评价的节点, H5 ^  v: N3 I- l1 L9 X" ?  o# J  h
[set note (note + item j ([credibility]of turtle (i + 1)))5 ^+ q( {0 }1 G/ h* v, t5 V+ N6 H
;;*(exp (-(people - 2)))/(people - 2))]

  f9 ?- q- `7 |' k. M$ Wset k (k + 1)
' t& E( x; M3 H]
1 T; g5 z- `9 B  y. m( s8 Jset j (j + 1)( N, U) b6 P. W, _. V' i- ]
]" F; m3 x( r0 ^8 o# ]
set note (note *(exp (- (1 / k)))/ k)
' U3 X1 s+ P1 E* \/ w3 Jset credibility-list (replace-item i credibility-list note)
/ E" C! l. w, Hset i (i + 1)! ^- i. |, I9 H8 ?
]
! W- T; \4 f- i5 E- ~, ~8 Yend
0 L" P1 O0 E0 @0 z" f/ `
( q  g, K( S3 Ito update-global-reputation-list
5 n, C& e- L( xlet j 0
" }# G% H1 R0 C; i. L! [while[j < people]
' [% a; \  a/ _8 e+ \6 a4 h[
% i/ Z# m- n9 N+ p. ~0 Xlet new 0
; c) ^. J" _6 |% ^% R- `: Y;;
暂存新的一个全局声誉& r; }, K8 l) U- q
let i 0
0 O; }9 n6 n8 v/ ?. }# T8 z' M( ~let sum-money 07 H# R% l% R- ^" e$ J# G# [
let credibility-money 09 o$ |  b6 O# r& d/ Z2 @, D
while [i < people]
0 R1 D; f8 v- `[9 F6 h/ V/ q6 \! o) p6 C7 H
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- y: d' q: P0 o" j# T$ s4 aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 o- n6 f; `2 e) t1 e
set i (i + 1)) g) p) k( f$ V! Q6 f
]5 g) e# x; @3 d& [( X' H( U
let k 0
- z4 n* ?, v* F4 v0 vlet new1 0- S; r  Q4 s3 R2 M) j  `: d  W- \
while [k < people]
# P+ O/ w+ @$ Q9 d, r, j[
* n2 t' o: Z. G5 I: zset 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 t6 t2 v' W/ g" k8 Z1 Uset k (k + 1)
5 \' b1 [# B: N4 Y3 z]- I4 M3 M& e5 W( l2 t  t
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. _5 X$ l9 o5 e* n/ v  }0 l) \set global-reputation-list (replace-item j global-reputation-list new)
2 j! U7 J( P! F' yset j (j + 1)5 v1 e( Y4 e: l" C; D# y
]" `' x( I* A; W. P
end
: v  B) R" q& v7 c8 ?7 R3 m
% `2 O2 |: M; a' p+ `; E# M* Q2 ^5 i, n+ k( o- S  M
( ?, ~! Q, k; ?. P
to get-color6 R9 H! F8 ]. E# E' v6 ]5 O$ R; C
$ h  u; E; S% H) ~# Y* P6 k
set color blue

4 g+ i8 s9 M$ j0 f, d6 N9 `end" l' w1 E0 J' ?2 I& i4 \
2 [7 n; f+ ?/ [* Z( R
to poll-class$ u: X( }' j$ O! x2 i' K. q
end* K$ Y# e; m6 b9 H$ S9 h( J
5 F1 E0 g1 d1 D( L2 D% o3 J
to setup-plot1, q' C& k6 p: X7 [
, |, W$ u5 t  s: J! K3 K7 d
set-current-plot "Trends-of-Local-reputation"

5 i7 J; `. H# y% \- k. s- y) d0 T, r4 V5 L% l- W
set-plot-x-range 0 xmax

. c3 |. n3 [6 b+ k2 u5 v; e& T) s, F; D( C+ k
set-plot-y-range 0.0 ymax

/ U1 S0 d/ `- W$ l1 T, L, @$ hend
* n& A# J& B2 t
. ]7 s; [1 t. H4 X* |to setup-plot2$ {) X# H+ F) r# p. W- F, j

/ q* N% d% N8 n& o, L) X1 |5 sset-current-plot "Trends-of-global-reputation"

: m4 M1 l/ u6 m( Q! a1 Q! N
7 F$ X6 R3 [' a& W2 K/ Cset-plot-x-range 0 xmax

) t. H* x) [, R. [1 D; Q' _/ c' z
, V  A& W, Q" h+ G, H- Bset-plot-y-range 0.0 ymax

% x" g$ A) l, Z: u7 v2 s9 l$ Hend' K2 M) M0 P; _: ^! D: a) _2 G' B
( a, T# A* _% {. g
to setup-plot3; |, _, {, P/ H: ^

& {$ h% [0 G6 Eset-current-plot "Trends-of-credibility"

' g& c5 H# L/ p$ y4 s( p
9 I+ n7 O( g. r3 a3 C0 L, ~set-plot-x-range 0 xmax
0 C; T  R. B7 e

' H* ^. R9 w2 H. B' y$ c8 J) bset-plot-y-range 0.0 ymax
# F/ u0 y4 J4 `/ e; b
end1 I2 c( w9 U/ n# \. z. v% [
9 {1 e- R* t: a6 d0 z9 t
to do-plots% O5 p0 i; {2 L0 L' ]4 M# o# ]
set-current-plot "Trends-of-Local-reputation"
8 @' s* ]- x' S3 x, Mset-current-plot-pen "Honest service"9 B# D4 O4 j& J) m2 C, }% L: b
end
3 A/ W2 J# B. Y) ]8 l( t# w3 C4 d' ^" N3 e% q7 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.
& L# R0 q1 [2 ^8 t) c- |/ U
3 z4 U. l. }6 \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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