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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:
$ O: P4 K- I* ?+ Y7 q$ yto do-business
, @+ P0 l! }+ i. N- k rt random 3602 ]& ?; G- Q& p5 `7 D6 `% O
fd 1( d8 {, B/ }- b
ifelse(other turtles-here != nobody)[9 C, _$ |/ @/ A6 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.
' j3 q6 A1 V. A& `* i7 l+ }8 P   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ o7 _. J$ Q* N" `: |5 S
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& u) O- ?* F$ P/ F( Z& W0 ?! |+ _   set [trade-record-one-len] of self length [trade-record-one] of self& o* ~7 k' ~( k+ v3 D
   set trade-record-current( list (timer) (random money-upper-limit))
( W' v5 X9 U5 u. L6 m0 t( T4 g  Q% {
问题的提示如下:
! k# `* c# O5 C; i4 S
1 P- D8 _6 c" X) Z! \error while turtle 50 running OF in procedure DO-BUSINESS& J6 e9 r. d) i( W# j3 W
  called by procedure GO
% e8 _  d$ E1 h7 B3 KOF expected input to be a turtle agentset or turtle but got NOBODY instead.% w3 C% ^3 J1 M: i5 ]0 k' S
(halted running of go)0 E4 L, g* X! l0 Y: D

" \2 D; Y' @0 |) W& t! B( A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 P+ }7 b! K6 Y+ F( |% F
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8 H1 c2 z7 n6 D3 z0 i$ ?5 e
globals[
* F9 U- U# R: m5 Ixmax  H6 `% J' T/ f$ V: M
ymax
. ^  F* [  L. s& q3 qglobal-reputation-list0 G% `8 k$ A5 P. d& c# ]8 {  f
" u$ i0 R: t: U# \
;;
每一个turtle的全局声誉都存在此LIST& N, Q& K0 L! n5 h6 C, {7 w
credibility-list) l8 _; z4 X' C, O6 W
;;
每一个turtle的评价可信度1 }4 n* k/ q, S4 q' {
honest-service& f' B8 N; |( u+ }, }3 t1 y
unhonest-service- p+ a( x& v3 M
oscillation( u7 e" f9 H  _9 s. e& h9 i! C
rand-dynamic6 P& K, s# A& y* E! D4 p
]. ?5 v! M, N: N! f# g% w

4 l8 t5 t$ y- V% cturtles-own[5 r5 Y/ u" I* S& Y/ U. C
trade-record-all
" }* I& y4 W- ~: I;;a list of lists,
trade-record-one组成
0 i4 V5 R: \+ a1 }6 N. ntrade-record-one
- u) Y: a6 l0 e;;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 n6 o: j6 P/ Z4 `" V" A! l' j: \8 q( z4 r  _
;;[
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]]% S/ `, o8 i! \- R
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]
1 E+ m/ p" P  u! }0 G8 dcredibility-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; _1 H- Y1 G) d2 O
neighbor-total' u, `) K8 S3 c' o* u
;;
记录该turtle的邻居节点的数目, J- c  A& G: F$ w
trade-time
5 k; E5 g! H( c; ^- |;;
当前发生交易的turtle的交易时间9 e; e$ B2 J1 Z. E. }5 W
appraise-give
6 s9 b* w. H- ~* U1 G3 v. v;;
当前发生交易时给出的评价
/ U  w$ _  G! C: ^appraise-receive4 k. A# T7 T' Q: |
;;
当前发生交易时收到的评价
0 e& d8 p; l. Mappraise-time4 f& Q5 _0 h0 c, W. f8 n2 `# q4 C
;;
当前发生交易时的评价时间
: p: C# \; y' z! D, {local-reputation-now;;此次交易后相对于对方turtle的局部声誉
. B! s7 M& T* r% e7 Xtrade-times-total& D2 w" E; J. q9 M- l$ P; W
;;
与当前turtle的交易总次数  {- ]& `9 \4 S: c
trade-money-total
  b& P; g3 P% @;;
与当前turtle的交易总金额+ [6 Y. b# {9 Z1 e6 I
local-reputation! y8 l7 H+ e% g( F# p6 }
global-reputation, `8 ?* C2 b4 v. `
credibility
7 C5 z6 T% u" O, ~; x;;
评价可信度,每次交易后都需要更新1 t$ c/ O: _9 J8 t) ~
credibility-all  P1 p  d" ^+ D9 A: U, R
;;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3 E: m; H  F" y" _  d
2 x9 F- A) U& Y$ `# o5 l' d: [" F
;;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0.53 o$ @% S" P( r9 r  @* ^4 r- @
credibility-one
! s% W3 q% Z: S" m: 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
8 ^' ~0 ^& W0 F+ X* k, kglobal-proportion
: J  U2 R2 |+ ^9 U5 _7 mcustomer7 K* i: y& b5 L7 `1 v2 X
customer-no
, J# ]0 t& G) W+ v; S& ?trust-ok
- k0 D0 g2 t; _( Q$ ~trade-record-one-len;;trade-record-one的长度
! ^% Q! A0 ~4 x2 h# s]
; j3 J  P' v) s, {2 W- f3 G& `& n& w$ U  b$ I2 q: `0 w. i
;;setup procedure! O! x% c9 S% w) h  t) o# K

8 e( A  ^5 w- W  j0 |to setup
6 a6 c# G- F5 Q# n0 h8 j* D6 G/ I3 o5 |- ?: t- h
ca

& `1 ^5 s( `2 ~' Q! R+ h& r; W0 J1 ^9 f+ U: |4 t! n' P
initialize-settings

  I7 a/ P" ]0 H  G% i% t" S) ]
  M9 c$ h  P( W' {- Acrt people [setup-turtles]

" C1 ?8 N+ D! A. `/ l. r3 \2 j5 {* N# t
reset-timer
! e5 V% |% k( L4 v" b; J' Y5 m8 N
3 g8 ~& N% F0 ?0 F5 ]
poll-class
( S6 E8 q9 Q; [* Y0 t, m

. V* }" i. ~& csetup-plots
- T- M" k; C: x  A$ E0 f5 C
! E! z  E* c' G3 [. Z1 r
do-plots
- W8 P( H1 j, {! e4 _
end
& [" ?* w8 Y* J. g3 O3 D2 a( [8 Q' J7 A# [+ i
to initialize-settings
9 F2 p  e& Z% N3 `6 I$ l
& U& Q$ z& n3 |' gset global-reputation-list []

/ \1 m/ o5 v$ O% \$ _
8 A) X, v5 R3 y3 e# N8 aset credibility-list n-values people [0.5]
# _" i1 p& t1 E: `2 Y

- O- s: Q4 U8 ]$ C- Q- {- rset honest-service 0

4 ^) X- I& F7 Z- A5 t2 V4 Q; P( R  c0 x- o
set unhonest-service 0

- \6 t$ f0 t# o
  G$ [4 @, u! h, Pset oscillation 0

1 C. C+ P: |  M7 P1 d+ F
+ Z" k* u  j- _8 T5 @set rand-dynamic 0
& D' o% S- M% N! p$ _
end
' }# m, k! E* s4 h& e- o% v& @9 |7 ?2 |6 }6 F2 o
to setup-turtles ' A9 x# S  q% n) }
set shape "person"
! X' }# e# V5 j) Dsetxy random-xcor random-ycor4 C" o$ R' m6 |$ `
set trade-record-one []2 M' [- w  P! X, i# I4 B/ V
. B, I* V5 W& V
set trade-record-all n-values people [(list (? + 1) 0 0)]
0 ]  u, V. C- [  _1 U

' `+ E3 Q' @8 O3 q* ^1 Rset trade-record-current []; w% I( a) Y* s
set credibility-receive []
. `" D" l5 w; i* `set local-reputation 0.5
3 V! U6 C4 a8 s  c" `/ a* p7 bset neighbor-total 0) `& p; ~  G( [: L1 H9 z1 z) L, b; ]
set trade-times-total 0
3 U( F6 H% ]' A5 L3 D2 q' t; {% uset trade-money-total 0
5 T; t* _* C. q9 D7 Dset customer nobody8 W7 n/ U2 y) y' [
set credibility-all n-values people [creat-credibility]
- M3 b9 [+ o" a" c9 }set credibility n-values people [-1]5 A9 L, r  t2 \1 ]3 D" V
get-color
+ x8 \1 s4 ^3 p) F, ~# K

! J  Z" @6 @6 R! wend6 T5 g, J0 N7 N1 z* n
: ?+ ^$ W& k/ N* l3 V5 _
to-report creat-credibility
! V5 n) W- d2 z2 f7 N0 u  E! creport n-values people [0.5]! w/ d- Y3 m. W2 y% O+ l
end- @, u( l: v6 W. k1 n+ A! U
/ w8 S" ~0 G, {: |' l+ V, V
to setup-plots+ E) |$ Y% t2 W/ `
! f, ?' L% `  {$ ?+ V" k- d
set xmax 30

) o, C% ^+ q3 U2 c8 V" I: v& l1 F0 d! O$ p2 a
set ymax 1.0

: M' k& H% p) ~/ d2 {
% X# d# ~* S! J- O, Uclear-all-plots
- l+ O+ G# \% C- \' K  J
& [9 L* }& A# \  I
setup-plot1
6 d; ?- j# m8 }6 @) I& p
) _7 ], ?$ I! E1 {$ ?0 w: M
setup-plot2

' p. e& T) b0 y. @& i* I6 {6 p/ h& D# _! G7 j
setup-plot3
0 R9 X% L% K/ l: f! k" @
end# h# T: O9 B' Z* y( ~3 _9 B; x) a3 i
! v) [# ^. N* R) K' f* P4 H
;;run time procedures# k+ g& A# s4 u. A) g
3 C( ^: S4 y" |; B3 a' T7 Y5 B
to go7 h% R) x. M: C
! M" f  r5 O2 n& j
ask turtles [do-business]
+ o- e/ t2 L! q
end' O$ F! v% E/ O& N1 v6 J$ U% l- T" [

) `- A* M4 A9 g! z# [. R  ?6 C0 L$ N) Yto do-business 5 d  g, u6 ~) ^9 \
" K4 J/ x" |+ {  v: b
. C, H) `7 u& K! o: J& i2 N- b
rt random 360

, K# m- {1 J% ^6 c# @5 j7 Q8 l, K8 o, v( w
fd 1

( E7 `; h$ d3 z6 [3 u
; }) T0 N1 M8 H6 y. fifelse(other turtles-here != nobody)[

$ U0 D; l. @# P, h% e5 }# T: E8 x  f+ A) c; D
set customer one-of other turtles-here

8 K7 u4 l0 H# ?. o: M7 \
+ a# H2 h7 h) U( V;; set [customer] of customer myself
' [3 f2 G3 |6 O5 p5 O

& q, ~7 [) E8 rset [trade-record-one] of self item (([who] of customer) - 1)+ P7 H) q( z3 A; Y4 y
[trade-record-all]of self
: |+ C7 ?$ E' k;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ {, @7 H7 ~" k
' O; {! m# u4 H+ m, Z0 h5 b
set [trade-record-one] of customer item (([who] of self) - 1)1 e2 ~! x  h0 M9 t( h$ C
[trade-record-all]of customer
2 K7 r. P& v; [, X- R/ Q6 p/ C2 U
4 p! r0 B$ R- c" `
set [trade-record-one-len] of self length [trade-record-one] of self
& |; O2 d1 t  Q( u7 o+ h3 @$ x, ~

5 l1 V2 j% g+ L! Q/ F& wset trade-record-current( list (timer) (random money-upper-limit))
% k8 Q$ K/ k. _. I

, d/ X  A% C3 e9 [7 r8 Y1 }5 @" Eask self [do-trust]) [7 v* `8 I& D
;;
先求ij的信任度
/ Y2 c: j* ?$ u" o/ L# b5 M7 o& Y2 h2 J; P5 V7 h2 f0 w! B3 \( f
if ([trust-ok] of self)
9 R5 f; t5 H% Z, Z;;
根据ij的信任度来决定是否与j进行交易[7 q& ]+ {! O& k% {" R5 Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% Z4 `4 l$ `2 z' f8 P+ t! C

* ?! R0 C! ?$ y9 L: h[

8 l5 e$ w8 }- i& G; _( y- C- N; Z7 E1 i6 Y. Z
do-trade

* @+ x) d3 y8 t  ~" O6 N/ `, V1 G3 O$ t3 O" S
update-credibility-ijl

/ z7 P, ^3 r3 P- X' s# k
1 j- m9 \! R$ g9 Xupdate-credibility-list4 y# e$ G; \5 i
4 Y* q0 W1 |- O+ j
6 ?% d* T$ \' l
update-global-reputation-list
9 g. e' R. N. Y) y; q( _

3 ~) ~, Z5 ?9 N+ m6 upoll-class
+ i$ p# y3 W1 L
) X2 k1 V$ B( O6 ?
get-color
" S  j  h0 p" X$ ~  o4 o7 c
! l* a0 X0 I1 z! v' g  P
]]
; @1 n, d4 |  p  U* @5 h. L
" s7 K- M  X/ v" T: {: R, [. f4 F- X;;
如果所得的信任度满足条件,则进行交易
* d9 U. c8 `, @% L4 y0 V
4 w9 Q; ]* u/ b3 |1 S$ L4 V[
' |" P* i) o) L
& j  M& M: R8 C% j8 Q! ~! [+ m
rt random 360
' V& k6 t) i& Y
& l- M% V6 m  s1 X5 ]. }+ h: b" P
fd 1

7 i& v' \0 y8 s7 h  e
2 K/ J+ U( a0 x1 r  v]
9 f4 U$ O* H2 L" ]3 U

8 S$ L0 M2 A5 z+ z( m' Send

; j/ {9 Z' V6 y/ l& A
6 H2 O9 n) B, U! d0 Jto do-trust ) w% O0 \. ?/ ^) l8 P
set trust-ok False; H% _+ v$ X. C2 M. t# Q
4 L& }+ P" E6 ?0 J
5 O: c. E5 z9 G
let max-trade-times 0
- f! T: F5 v9 z4 ?foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 h* G  F8 _! }1 l
let max-trade-money 0
2 I& U) S$ `" P8 pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( y9 B3 E1 y3 m2 c; L
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& `6 C$ ]. h& M1 Z( E( p
5 v' S9 S8 Z9 y" L) P

( q* ]) [0 J. Z0 N2 F8 o' Sget-global-proportion$ |" l9 T) p" a
let trust-value
' x# T% c7 {  O  Elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
: @# x, T$ ]. X4 ^& Q9 A' }, T6 p
if(trust-value > trade-trust-value)
) d3 K3 m/ q) V6 e  Z[set trust-ok true]3 a" q$ @) Z  d4 T& H' M# @
end
. B- t3 q3 q( k( ~4 `; h8 a9 u3 t% w4 c6 I$ C+ k  {  y7 A4 K
to get-global-proportion4 X' c5 M5 q9 V4 Y) U- z$ R- M+ w
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 ]& {$ z' V+ _- j3 ^9 j
[set global-proportion 0]
) T: V, n/ f# ?8 m! v[let i 0
; w  O$ i/ V9 v! `0 @let sum-money 0
( c6 u. @! r' S$ S# nwhile[ i < people]. J  A" X. R* U; ]4 p  r
[8 m6 l: A1 W7 }, E4 ^# W
if( length (item i
2 X+ r- I: k2 y9 z1 A; ?[trade-record-all] of customer) > 3 )

' j8 S5 @- P. Y8 }& ~6 ~$ `[9 f+ S; s: w( w3 [) ]2 ?8 E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))1 w! D  w& ^) V$ o, n( n. |
]( A6 z) f4 i2 V" x/ S( D
]
5 B' t* m* ?& R7 Glet j 0
- q! g0 B( j  ^# T( @, v) x8 alet note 02 M5 J* e: U4 M! a
while[ j < people]( |. \9 C6 J7 f% V4 ?  i
[
2 g7 u( \- R8 |1 a7 pif( length (item i
' y2 E5 v4 ?8 S2 t7 `/ V* s[trade-record-all] of customer) > 3 )
6 Z) D) d; X3 Y( M- w" a+ l; p
[
# _/ V; q( m& l; o0 h4 o- f' j0 pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" I: A4 a; [8 c8 B: V( F[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' V. J( B8 s& [[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ C  b: C1 }/ Q0 T/ x+ U: o]8 c  U) p. M4 u
]
& I. s  G7 [6 g& `9 E6 H4 |set global-proportion note, a: u6 V! g) d- G9 i$ n; d9 n% ^* g
]* @  s% Q  [6 [& e  U+ o) Y9 s
end% _  ]: ?) q1 `

* Q& u! b& j4 d8 x1 oto do-trade
# a# h7 z" Q, h' ?" e;;
这个过程实际上是给双方作出评价的过程
# h; S* X2 n* |2 L# t2 Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 H. i# O  m& Z: |9 Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( y% X5 R& a/ @4 ]6 Q3 n( @8 s1 s
set trade-record-current lput(timer) trade-record-current) w" q' R: d& L( c0 _) ~
;;
评价时间
8 }1 H3 [8 }: G8 y1 _3 K2 _, T. F& H3 [ask myself [8 t  J( p5 W2 r: ?1 h% i# p
update-local-reputation3 b) \* S  z+ s, Q8 n8 C
set trade-record-current lput([local-reputation] of myself) trade-record-current* n, ?7 B8 j$ O+ G+ G
]
: N; o6 d2 O4 W4 dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 I0 v- l- X# X;;
将此次交易的记录加入到trade-record-one( z, F6 ?4 Q* P# H2 b
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( O& W' M* e' c- l9 [
let note (item 2 trade-record-current )* [! ?" |9 _( l7 h
set trade-record-current' U0 M2 ~: N' Y- k2 |
(replace-item 2 trade-record-current (item 3 trade-record-current))
- O, p( j) @  n
set trade-record-current
" X% z$ Y$ h+ x' N(replace-item 3 trade-record-current note)( X; G$ J, U7 K- s1 L
" L& b! I# s0 ]$ y  ?! X
% z( E- ^8 E7 s1 Q+ w9 h" K
ask customer [4 N6 m: `/ H# k, K! H, D! R
update-local-reputation! R# w( j) d8 m4 p$ n9 |
set trade-record-current* @- A6 M% n( Z2 F
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; t3 b7 P+ H/ n# b( e' S! _$ e
]
( P  D. R# s) I$ Q7 b  S1 m8 n
# B. I8 k* J/ Q4 `5 m
& A" |7 \: H1 `
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ K2 Q+ U6 N( h! A

) n3 j4 F6 @5 v6 n. K) U7 Rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% Z* D4 |, W" q) O; X6 D
;;
将此次交易的记录加入到customertrade-record-all
  k0 `/ Z$ L$ I6 W) |6 U) ^# _7 n4 {1 Kend
0 O+ `- ~( B0 L6 ?5 Z# C
2 P; h/ E  G0 k( f  J8 yto update-local-reputation
/ G) O1 u5 t. u% V# ^, m6 K; @6 s, ~set [trade-record-one-len] of myself length [trade-record-one] of myself
& X; p/ y4 W/ @
: R% \. |9 Q0 l
8 I! }; n! c7 t1 k/ \;;if [trade-record-one-len] of myself > 3
- L: h$ s& R/ w7 \
update-neighbor-total
9 @5 V/ h1 P0 |4 Z, k;;
更新邻居节点的数目,在此进行
4 U* k8 K& F8 T; i- Y8 t; Qlet i 3. s6 ?0 i3 m* j* `
let sum-time 0" L1 T, y) l, K8 }) F
while[i < [trade-record-one-len] of myself]
9 P/ q/ `+ n# o/ o0 U/ g[% E0 k. W8 s( i! M$ E- z: J
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 k4 w6 j$ b7 r& Gset i
2 F, E) P- U+ P1 z+ I* u5 _( i + 1)

/ g0 m* |/ r) Z, m, R]9 w  f4 I$ m! p0 N4 x) y
let j 3) E' i0 Q& a6 K* s1 e4 J
let sum-money 0% N6 }3 E- A6 ?7 T0 l: }
while[j < [trade-record-one-len] of myself]
- |# W, f" c9 M8 w( i[
$ X0 d: N' w% C8 i2 Xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
- O+ X- ~+ t0 M  V+ Zset j
0 u' o! {0 s6 y' V1 v8 W+ C( j + 1)

& @1 l6 i; X( d& W6 Q]3 i0 E5 \% \8 v( T* i4 T
let k 3
# i) o$ `7 K) k2 K" s7 _5 Hlet power 0+ [5 |6 h5 o0 t, k- g7 x
let local 0
) @% J& v5 h- i- N6 A$ Iwhile [k <[trade-record-one-len] of myself]
, k( ~1 A2 P5 }. t" ~; A/ Z, j  e[, T. @8 [! ~2 U( `, T+ b
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)
9 }+ h$ r0 ~4 A" S  S1 c5 oset k (k + 1)
0 V- ^2 E9 w& P; J]7 r9 O% J& w% t" B- S( u) B
set [local-reputation] of myself (local)
) _! Q  ~1 v. nend* {! W7 l4 S1 n2 L9 T' @
) l& [1 r" r; t: ~) z4 k0 p* r
to update-neighbor-total
7 D  ^  h" b& t
2 o$ `% i- E1 u+ mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% k# o2 Y9 A# I. i+ E$ Y+ R& r" R4 i5 o; y0 ~

0 O9 @9 O( v3 E" w! V5 dend6 a! B0 Y3 p9 `4 L, p
- T- v9 l2 u& T  R# t  T6 s
to update-credibility-ijl
. g( x, Q- p- X$ W/ t$ `% H" w8 \- g6 p3 i) y4 w7 U  F9 b
;;
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。
# n& S# P$ @# r7 B1 Wlet l 0) H4 O: e7 `6 p. L5 w
while[ l < people ]
% Q3 A1 T' u, {8 Q& L8 c5 ^% p;;
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
0 f4 _# _  w% Z[% C6 B9 _; g3 _$ F$ C
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): v. o" i6 @2 f2 ^' S" R
if (trade-record-one-j-l-len > 3)
2 b+ d4 P7 h8 C- h[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/ Z$ [- O7 t5 P+ M- i9 D
let i 3/ I( a- s1 q$ x6 a2 B1 ?  H+ L
let sum-time 0
; r5 ]( d4 @/ \4 n4 `while[i < trade-record-one-len]! N: h0 H  r5 o! g0 n/ M
[, T, F- ]3 p; g! _- R1 Y$ n$ d( D
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! Q$ Z/ o- O( U4 U7 C- A$ L6 O
set i4 H% M2 [; R  c9 k
( i + 1)
2 n# ~# L" R% G  Y; d
]
2 f8 s. i- g8 q5 B! f. E' Zlet credibility-i-j-l 0
2 f7 Q6 U, `# m6 F8 \7 b! T, [;;i
评价(jjl的评价)
( B2 f0 p9 j8 |" R0 f# Z& Y1 tlet j 3
6 y. B+ p+ S+ Z! |2 qlet k 4& B+ n* a/ n) S1 ~+ F5 g
while[j < trade-record-one-len]; K6 B+ `6 @% t) G: R
[
; v- {$ G- v1 k& B2 ]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* h$ @' Q6 Sset 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)* N3 d% a2 d8 h/ c! {
set j1 ]  L( v+ ]- D5 T
( j + 1)

& L/ ]4 M3 e& M]' |# W) v+ b+ u3 i- y- P
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 )). m6 [/ ]& C! ~
: N! k. `6 ^  u' E$ ~. V) Z0 C1 q+ n
  K4 z! H' N2 d$ y7 l1 Q! H. s, T+ Q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' C7 V3 W+ G0 D) a
;;
及时更新il的评价质量的评价
1 d" A& @# h5 Zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ R+ b- v- V& Iset l (l + 1)) ?- P$ J% V% e4 }2 \' N
]
) a, ], H9 Z; Y+ A4 B5 Rend
! k# a. h& V! c2 |
9 c3 G" r; z8 l, L9 R8 V* Rto update-credibility-list
( x* l- h8 ~$ w" F8 Flet i 0) P9 Z, g8 u9 C! y8 E
while[i < people]
: P3 E. v0 c# W4 w; p[
: e. R, M/ X) x, Nlet j 05 d0 b1 T& b. r- r
let note 0
" d1 Y( p. I" Q# J! n# V, vlet k 0
4 Q7 y0 R% @" H; f;;
计作出过评价的邻居节点的数目3 V8 Z; D- t8 b
while[j < people]& n' ^) {3 Y' {6 ^! k- i4 c
[
8 i' z  o: s9 z& d9 e2 \if (item j( [credibility] of turtle (i + 1)) != -1)
& D9 h& K: E5 O7 `6 h; I;;
判断是否给本turtle的评价质量做出过评价的节点# u9 q& O- B+ B4 e
[set note (note + item j ([credibility]of turtle (i + 1)))7 R4 E9 S5 C" Z; R6 L1 a" J6 V
;;*(exp (-(people - 2)))/(people - 2))]

! ?) o, h( m2 w0 X/ ^6 V0 oset k (k + 1)$ w: V! u' P5 S& }4 D0 c3 U
]. q: V6 M0 X2 ^9 }& B, w; ]6 z
set j (j + 1); {$ n3 R1 T3 d7 K- h
]4 d6 g: `' g+ h5 z- A5 w
set note (note *(exp (- (1 / k)))/ k)
2 g' p+ P7 v& ~5 W! d2 _set credibility-list (replace-item i credibility-list note)
' r& f4 I. P0 H6 b: xset i (i + 1)7 F2 d1 `7 D6 e. S: Q
]
% S3 F' r, h2 tend
/ \  ^# o: Y, y9 ?* N& i0 ^! J& c! S9 T
to update-global-reputation-list% w; p" Z4 `2 g$ y# I8 F
let j 00 t. c3 T7 f, w3 n
while[j < people]' O8 D6 }  G" r5 w7 [, I! B, E6 H; |
[4 e0 R* R! T' M$ y5 [8 s
let new 01 @  u! g) U- n5 F' K
;;
暂存新的一个全局声誉, K% r# r- m. S( `  Y* ^  V# o
let i 0' X, N% h/ K! b/ T4 p; Y; s# {4 t$ i
let sum-money 0" ?* Y; A1 ?2 A+ v+ D6 `5 U
let credibility-money 0% }) B- e2 f$ L* J6 W
while [i < people]1 }% q* Z9 T3 D0 |+ @+ `! _
[. v/ E/ s! D; N# D. [2 `
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 ?7 h4 t0 U9 @) D1 |set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: Y$ [  a: o. A4 R8 i. R7 |6 Iset i (i + 1)
: Z+ ?4 |. m" S' @( V3 C. T0 \, ^]
& A% J+ O; {: x- p9 p: L* Mlet k 0# h" v5 r( D2 O. ?* n! Y& l
let new1 0
: i$ U4 t! L* p6 pwhile [k < people]
! ^. D6 I+ @. g[
) Z2 a( ~! w; Wset 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)) n7 d: a/ `& ^. ~# k5 q
set k (k + 1)
, |  X* _/ t8 E  ]- T4 K]
$ z8 x, T  s- q# pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 S' A' N! f$ H- |: t1 I& R
set global-reputation-list (replace-item j global-reputation-list new)# O" @. ?- |/ Z' Y. {: j) e$ A+ J* \
set j (j + 1)
. }& {7 p$ E5 Z0 _7 s]
5 J' P. N+ L  V7 j2 r7 Iend. B8 B: r- U8 j" {7 U
! ^7 C& e- h  o9 P, p- l* w

+ Z6 Y& y" n) P' p
# Q; S# t3 \* Rto get-color- L* G7 x3 [4 c" u# `8 v' x. j$ k6 ~

+ |- Q1 J* A# S; S+ Iset color blue

  ^5 {2 J$ e" G) Z/ vend3 ~# x- I7 b1 A# Y2 ^
; f( I) c6 v" U/ Y
to poll-class
! S( |6 w! j4 gend( a: Q  J- v+ Z. S, A# }
. w) F. C9 c0 p4 s, {3 J: E0 ~
to setup-plot1
' J% ~& T* X, C$ P* \2 F8 y4 J# R+ _7 e9 E* _3 L$ e3 o
set-current-plot "Trends-of-Local-reputation"

! g) u  V% M) l6 e1 p
  L$ E3 ^2 ]' v0 u; v3 R; W. wset-plot-x-range 0 xmax
  s, K# M* ~( u
! x4 J9 O9 S$ I* A! X: t
set-plot-y-range 0.0 ymax
3 u! K  `. j4 p* U
end( S! s* Q" ~" z9 H! O/ @# H

, h5 j0 x! I8 K" k8 ~$ q! L3 qto setup-plot2/ e8 f$ X- [9 U

0 r& w9 X1 u1 n, j6 W$ \9 R; gset-current-plot "Trends-of-global-reputation"
& L! N$ e, C( A# V; I: [

9 a4 m' M0 m' N4 v+ aset-plot-x-range 0 xmax

! r6 Q+ p5 F: a
) Y% H0 `9 W5 e0 y4 y, ~4 ?set-plot-y-range 0.0 ymax

9 O; S5 M  P0 G; y- nend
* n) v" t" O  Q4 E# \
6 v5 J' s: S# g9 B0 m: Gto setup-plot3
( ?" _# B5 g: g0 i  {# x6 F$ p, I! o  T7 [
set-current-plot "Trends-of-credibility"

5 O+ _: u) [/ Y) E2 ^% i
) W0 s5 t5 @1 [" \; u* jset-plot-x-range 0 xmax

" e, m7 a$ \6 \. B1 `
7 \* H$ T* w! R* r- yset-plot-y-range 0.0 ymax

" `( d3 O+ f! X% d! U* B" yend' X, h- z8 w  Y5 d; K

; w/ Q( P; q* d' Tto do-plots- C. i) q% I. B5 V; A' I4 p" O
set-current-plot "Trends-of-Local-reputation"& X3 G6 G3 L- U; j6 F4 N, B
set-current-plot-pen "Honest service"
% ~2 |9 B# d! N; \4 f' R+ X" send
: }3 C) G' T5 @& `& h8 G0 e( S& i7 @; R2 R8 w3 F& G3 v' h* J' s
[ 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.% _2 S. \! i0 ]' _9 ?

* M$ F, ~. U3 n# k9 f4 j) L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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