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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:
" L5 X' [6 o( j" Eto do-business
( M* g" J1 u2 ]6 I6 G rt random 360% e; D2 e; |8 f# v+ H$ n) C% r8 t
fd 1! P# F& P$ p% X9 i8 T
ifelse(other turtles-here != nobody)[# }# \$ D' @5 A/ y( H& X- J
   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.
' U1 R+ Q. w0 b0 X* e- x4 m# ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . k  ^  O; r$ s6 w/ f
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; Y/ t% L2 B: h& n$ D1 f   set [trade-record-one-len] of self length [trade-record-one] of self7 }7 I) h3 ?0 O9 \7 V# y) H
   set trade-record-current( list (timer) (random money-upper-limit))# K( T9 W& `7 Q
% p7 b2 K& `/ C& V
问题的提示如下:
4 S, D( b. l0 Q% c# u+ \! ]4 `/ }! b7 T/ J4 |
error while turtle 50 running OF in procedure DO-BUSINESS5 N& S- E9 X9 s; K( {4 \4 u
  called by procedure GO
8 n0 w5 i' e6 i8 vOF expected input to be a turtle agentset or turtle but got NOBODY instead.2 Q( f; ?2 o& T4 v1 @, [4 F
(halted running of go)% ]- d# q" j; E% U+ ~* g9 R
* G# P6 ^" N7 ^, Q6 f
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~' T: N+ z  E- T/ X7 Y
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- o7 F6 c1 t% Q/ q+ H, `: A' W
globals[1 z* {5 m. h  X
xmax9 `9 m2 a: x1 Q1 g
ymax
, P0 B( U+ {# t! aglobal-reputation-list+ S% c' ^) |% Z, g" M
1 p  X1 ?" P* |
;;
每一个turtle的全局声誉都存在此LIST
/ a- }: @1 R3 f) n7 s9 Q# \6 {credibility-list
2 ~) ~7 @& V' d  };;
每一个turtle的评价可信度
& ]: @9 M( h4 l: _. \2 qhonest-service4 `4 C- G! F2 l
unhonest-service0 n5 d+ w$ |7 S7 k9 ?* Y
oscillation
! {- L) r1 Y( r3 Erand-dynamic+ T+ a* O2 X$ ^% ~' Z' M8 o
]& f( y, c2 G9 u  m, K2 d. u# c
, D1 q. u3 J( h# u# c* \( E
turtles-own[$ o2 K5 g& `& `& I; q2 P0 y  s
trade-record-all
! P3 B+ k6 D+ [) U5 a;;a list of lists,
trade-record-one组成8 N% I; f& {0 C8 Y% T/ l
trade-record-one  m0 H) }. k. ], r) Y, m4 Y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 n+ J7 {1 v$ r1 i4 l4 Q8 h
7 I( D9 h& N3 s
;;[
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]]
$ g1 Y# V7 _) I: \( E4 x0 u' a9 Rtrade-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]
- y3 w' n0 h& y+ A9 Ocredibility-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' b  e% d2 c2 e% a, y0 B
neighbor-total+ E! `9 F7 t9 k2 {6 V
;;
记录该turtle的邻居节点的数目( |+ P2 ]% ^) w9 j1 W: Q: R
trade-time
: X/ ^# A' y/ c2 `6 x0 Z7 [;;
当前发生交易的turtle的交易时间
. ?' ~7 `7 s* F: X4 M# d& Kappraise-give+ M3 B* a; b6 R$ N' i% V  r8 C
;;
当前发生交易时给出的评价2 U6 y& Q4 M) b3 S; Q! K
appraise-receive0 M/ w$ p$ N$ t7 m3 K1 Z! Y
;;
当前发生交易时收到的评价
& T6 G8 R  r4 n6 M( J- Bappraise-time
5 ]  f& n( T7 x# n5 Z5 q;;
当前发生交易时的评价时间
- x+ A' d4 e5 O7 |$ Nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉* e$ V* Z; C( X2 V! A
trade-times-total- ]7 j, k( S/ X3 y! j* G8 [
;;
与当前turtle的交易总次数  e0 u5 N" u# k  Z6 m- k" O: F- E2 d
trade-money-total& u  H7 @! l5 K$ m
;;
与当前turtle的交易总金额7 h& L9 w- [/ S3 h5 s! z. Q' x/ M! ?, O
local-reputation
9 t+ \$ [& J: Q+ _2 w0 T) `global-reputation. Y! a( `: n% M9 K
credibility. I8 ]) _, G$ t  q8 c
;;
评价可信度,每次交易后都需要更新
. k$ \* m9 z! C9 f* U1 M. ]4 p5 }: I/ jcredibility-all+ k( V8 J6 k. Z0 o1 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
) Q$ J* L3 g' ^5 k' r/ e) |* b! q, @) |2 T3 f8 o4 J* a$ 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0.5
/ M% s0 q0 M8 H# ^2 Y1 Ccredibility-one9 I( X( R5 s- S9 b8 p
;;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+ C0 P# I4 t3 B7 h
global-proportion
9 i# c1 e2 d% Z# o* Ncustomer6 H( {- `# \( N2 @; k8 V6 b+ Y
customer-no3 ?0 c5 f2 @' k  d
trust-ok
" k* C8 \( c1 A1 P  i" u# Z; U9 Xtrade-record-one-len;;trade-record-one的长度
" U1 X5 P' c! m  p0 h/ x. n]
6 x3 ^# N  N( O) P6 E: c
1 q# S7 G, g3 A0 q;;setup procedure- ~& K( d5 H+ @+ J. l

0 _  x% p8 k. Q, g+ X1 G- eto setup
, G0 T' P5 E& @4 C3 \; v" y- R8 U% D
ca

; F! D) g0 Z9 Z  c7 Q" [% T# r( ^2 v3 k4 I7 X0 F; P2 {2 ?
initialize-settings

7 n0 ~& _0 T7 \4 D* m+ F
1 }+ m4 I. }" u/ {) ecrt people [setup-turtles]

  S+ `1 ^; o  ]0 ?' q1 ]. ?9 V) R- W& I" L7 _2 ?$ ]
reset-timer
8 D; X+ V/ I8 d+ ^- \

4 w0 K: f" r/ H5 p- z. t9 \8 M- rpoll-class

* f9 v7 ^0 Z" U: n# m+ I
# ?9 Z) }( P& Vsetup-plots
- ~9 e3 a* {0 Z' z
- J4 u0 r. P! C: r
do-plots

# c' \2 r( g4 E9 M/ J& E% S! e8 i1 oend: M$ P3 N% d6 a% K* c3 J

# d+ ^. Q7 V& Eto initialize-settings+ B( w# x2 G; [

0 G$ o8 E, \6 Aset global-reputation-list []

! U+ b) d6 @/ I5 T) B4 d; |3 d
set credibility-list n-values people [0.5]
. y* e% U7 R( l  N% R& I+ ?9 T) s
# d7 M* `( F+ p
set honest-service 0
# R* x5 N7 z; f6 J2 f5 Z

% J$ d7 M# i/ Qset unhonest-service 0

/ b5 [; S4 y" {% U) o
: [2 v9 d$ q' E: [6 ]2 V& @% f! i6 v& u. zset oscillation 0

  @& G( h; F% B' A7 c. M4 H, b- ~( A" t: x9 {5 i
set rand-dynamic 0
7 F# I6 k, _3 N/ [
end* K  e, U  Q! Q& P8 J& P6 m
% h/ d) A3 X9 p3 G# H" ]
to setup-turtles
# I3 N2 `$ q( Fset shape "person"
7 ^+ X8 G4 g* U( E0 w: o! }3 [% D4 Osetxy random-xcor random-ycor
' f4 b7 q: i2 R4 x. N9 _. U" M/ N5 kset trade-record-one []
* l+ }0 J) ^& ?( L9 e% B) s

9 D# G" X6 T3 i8 d1 `8 X7 F/ Iset trade-record-all n-values people [(list (? + 1) 0 0)] ) r4 k# }8 d. v2 A

! v$ ]+ G! ~" k8 o. a4 rset trade-record-current []0 p  P; u9 x1 \& A! {$ j
set credibility-receive []
1 G. L; f$ m1 j7 N5 nset local-reputation 0.5
( @- @5 k4 M( b* _. Dset neighbor-total 0
; p. v4 {  |1 x7 ~2 z- `& Gset trade-times-total 0
2 P2 g2 A  j6 J- C* j7 g  f+ S! E, U3 [set trade-money-total 0- s- {8 m* c0 `% ^- N% h& G' z
set customer nobody
) ^* h  u: T5 Y; |: Mset credibility-all n-values people [creat-credibility]
) f$ |+ E, |  H6 h, _set credibility n-values people [-1]( x1 |! ?, c& F7 p6 |. g/ c9 l! \6 n
get-color% |% \- G& u! ~! \

1 g! Q+ u& x  H2 kend
0 X6 }6 I2 p5 P: R
* x* q% E+ P! j% V& ?( _/ ~; Dto-report creat-credibility8 z. |7 _9 k' P0 e5 E2 g" @* x
report n-values people [0.5]9 {; n6 ?: R2 w# s0 B% q; f( C" z
end6 X- X9 ~1 z# W$ Q0 K0 K0 G9 A

/ s6 n6 Z$ K0 U7 Z  Q: {to setup-plots
5 r, W3 i8 r- B8 O0 N) ^' N% u! N/ r0 U& `+ X6 [  j2 N0 O
set xmax 30
5 f, s5 g7 ?1 v! ?1 T
& V2 J0 F( g! u" d; V
set ymax 1.0

4 h  B0 ]2 X0 r  O' o' i& d8 M: i( Q! T( K# C- L
clear-all-plots

# `* w; m6 r+ X  @  ^! N' Z# v$ ~' N5 X6 Q1 O$ `8 D3 _, Y* ~# G
setup-plot1
9 O0 s, T* w( j) S( V+ \; i
7 d. O7 G% h( j! H$ O# A7 u
setup-plot2
$ Y4 w# g3 N  C0 M$ c4 u' V
$ Q/ p7 y( M: @2 S$ b
setup-plot3

  n' j0 Z# \2 e5 v4 I3 Vend
  D0 L7 B5 D/ U! o; J- Z; @6 _: A& L
/ t5 D5 I( E( k# x& l: y;;run time procedures
5 J" Y& M  N/ _, T* I0 t' J/ {
) V) U! V( n4 i) x, r& w8 Yto go
; }/ M5 I! |1 S  Z( c8 u. m* A
( B, x( ~2 T9 j3 s4 x1 A9 u7 Yask turtles [do-business]
" N$ p3 d5 ?3 I; M, }& T
end) v* _1 A4 m/ J

  ~6 C, p4 h' e' d/ ~5 Ato do-business 0 m* u# P! N1 @4 Y4 C  G! ?9 g- L

2 H9 ?, w0 Q2 O' A
/ l, S% ?3 r/ L4 c; M7 V! h  d/ Grt random 360
1 k5 y$ p2 s. E

6 U+ n9 k% J3 U4 Q/ `, Lfd 1

. t3 o- I$ t8 @1 e, J
9 B2 d" k' b9 W$ D( n6 nifelse(other turtles-here != nobody)[
1 @# I, ^/ d9 v# k$ P* _6 B( x
4 P4 D8 g- @5 D; H7 q; ]( D
set customer one-of other turtles-here

9 e1 b; A  w& y5 r$ I6 C: j/ f5 b! s( ~3 `8 Q- n& O& d8 z
;; set [customer] of customer myself
3 R$ _3 x4 O6 ]$ i. D$ n
1 D% ]7 `4 O# C5 x4 v) Q5 s' L
set [trade-record-one] of self item (([who] of customer) - 1)& a$ d) F4 K! p
[trade-record-all]of self
) k2 D0 W: |, h) e;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  u; k2 t1 E# a1 @4 ~7 F

/ i. m, p" s  \set [trade-record-one] of customer item (([who] of self) - 1)
7 r5 t' ~- r# Y# r5 J/ t9 u+ I5 ^[trade-record-all]of customer

8 l0 X; u# e: z- E, v) Y" @* }1 m' z4 r; k# ]
set [trade-record-one-len] of self length [trade-record-one] of self

1 [9 x! {9 A4 A; O7 a* n# A  A  k/ a6 k. E0 s1 M. l9 V3 D# Q" k1 J
set trade-record-current( list (timer) (random money-upper-limit))
, Z. P! C5 H, w& E7 h0 h8 ^

; T, F) }; {$ Mask self [do-trust]2 T) ]/ H* |- X. Q$ \9 A) [
;;
先求ij的信任度
7 H3 L  A4 m9 I5 }( w, p" b/ |/ }  F) m' d, O( q8 `
if ([trust-ok] of self)
& h: v# M: ]  p: c. u;;
根据ij的信任度来决定是否与j进行交易[
9 b4 r- s! `8 n% G6 `- Zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ ?4 ]3 x, a  K
. S- c0 z/ d- ^% Y& ^[
" G1 T" }( p/ X' ~3 M  A; F) [- W4 E
4 u' Z* d8 l5 a6 h' Z
do-trade

, ~& P8 X/ [1 K
2 S) d0 K. U( o& ~  y4 Z/ K- Dupdate-credibility-ijl

5 V* ~& w; U8 U5 ]% I) b
) V) D. x. g6 J5 R8 j9 D6 `update-credibility-list5 M! d/ ^- l; q( C* ^

* B" B& k6 q" W1 E+ o2 V9 E
( @1 G" y* p  u1 b* Gupdate-global-reputation-list
' f" V" E# y) }6 v3 P9 ~
, y9 V7 V! k; x. b' u8 Y
poll-class

3 ?' \1 g: V$ p  o6 ~2 w3 W
. H, ]! O% z" Y, q9 I+ i4 ?6 J) qget-color

" K- n. V3 u" @/ c4 x4 }$ J' p% I( i& s, H
]]- z* k. @5 t2 E4 g
: T/ D! m& U' R; \
;;
如果所得的信任度满足条件,则进行交易
" b+ C' b7 F& B# z
. v5 P' I1 J$ S$ q7 b[
  z' `: O8 P0 ?( X- r: q

8 n0 k# w1 W, y5 krt random 360
/ }! }/ a$ h5 h0 P  m/ v8 @
. V3 H  ?" f) g
fd 1

- e* I( c! s( f; D- {7 w# S+ q+ z# \4 `7 U% j, f
]
- [( A  Q* }8 w! P# j

( C8 ~6 c% H. @+ T7 Qend
7 b# l& d/ H% ^/ j; O
: N+ f  Q7 f4 D( B( b- F! p
to do-trust
! s) z( o7 X# T7 C/ g# E) tset trust-ok False
2 k& i5 r; f9 G' ?' b( D2 J" P) d5 r. q* d$ K4 _

" A* P  F' N, X/ b1 u8 a9 g! h; slet max-trade-times 0$ e$ h8 b3 e1 s3 P; `
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" v9 |8 O+ H# x8 d
let max-trade-money 0* ]2 c/ C! Q/ y" c
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ y. b/ `1 ]% U
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 D8 J" M; c1 v) [1 X, Y. M% f) I& Y* G+ H

5 N- Z0 n, J6 }- kget-global-proportion3 @+ U/ ^, v0 J9 S
let trust-value
* s" j8 J6 n. @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)

" X9 w' K8 z! I4 }' [! hif(trust-value > trade-trust-value)
. ~+ M0 z# \! P# T9 `- ?% C[set trust-ok true]$ h4 ]3 L2 F7 h0 ~
end8 N; X! }+ T" W: g2 ?

: w% I8 M/ Q* S, I, d1 Oto get-global-proportion: v8 x) g3 Y+ |  D' Y/ ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 {  |) H1 R9 b. [# q/ @
[set global-proportion 0]" C& s) {: Y  b  o
[let i 0* j" `6 A+ ]4 E: X; U
let sum-money 0% ]1 {, E4 y* z. n4 m( X3 f1 ^
while[ i < people]7 k( e; `1 a/ z% ]0 l; @/ a9 J( ]1 g
[1 r8 V/ |" C4 U3 X9 J* Y  B
if( length (item i  e" {- W: Q9 q! x$ k" _
[trade-record-all] of customer) > 3 )

) C4 u1 L2 L5 r7 X[" s* l( n% \* g. m* b
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% a8 B3 w1 B/ o: n1 e) D8 y6 v# X
]
$ q* R% ^5 D5 o& w3 D* w) b]
/ p5 I3 ?2 q2 c3 P& j, glet j 04 U9 |" ]2 S! s" f: ~2 X0 y* z
let note 0. }! o, N2 C7 \3 o: L2 O$ H
while[ j < people]
5 T0 E2 F1 u( `( o: M, s& }, T[( b0 X- a5 ]! G( w5 R) {/ M( U% x
if( length (item i5 k7 G; }4 w# G+ W8 i
[trade-record-all] of customer) > 3 )
% d0 E  R$ p; P5 a+ ^
[
3 u3 S. Y8 {0 q# Tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' r0 E* \# K  K! w- j[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. Y* B3 _# z9 L' Z, B. H
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 Y* e; u! C" G]
* ^4 i' b$ B9 ]0 }' h; _9 o]
0 x: C: H; z1 P% A% Z+ M0 eset global-proportion note
- s! ]7 o* V; I6 i]4 L/ `# U8 P$ e* J4 O
end
! f" [- B& j1 m& M
' K2 z2 [0 v, p9 B7 \to do-trade) E4 `' A) X, U5 p- ]/ f
;;
这个过程实际上是给双方作出评价的过程. M; j% e0 l4 ]6 t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* R9 J8 _$ a# k# J$ s* g& n, bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: ]6 j7 V4 o( ?; r9 X% x7 yset trade-record-current lput(timer) trade-record-current
' H' g4 c& w+ M2 ]& _8 `;;
评价时间3 _- N* @' b% h. L2 N
ask myself [( B& N4 }. ~# M$ S; V3 W% b
update-local-reputation. _, ]6 W6 e3 ~0 z+ S9 @
set trade-record-current lput([local-reputation] of myself) trade-record-current3 n% R8 b& W3 q3 D
]9 A; K3 B, D, j: ^% c. n
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 Z  n+ ~7 J# d2 L2 T;;
将此次交易的记录加入到trade-record-one
$ W& a" s( T5 C8 Zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 k7 s2 y" r; G8 d7 @
let note (item 2 trade-record-current )4 M8 c: C& f% p
set trade-record-current3 l2 J4 u( W2 X  a
(replace-item 2 trade-record-current (item 3 trade-record-current))
8 p$ a# z4 o  N3 V, o( I1 P: X+ B, s
set trade-record-current" Y& o- V0 V( l/ r, B
(replace-item 3 trade-record-current note)
) k/ k* @, Y, y" G! K3 {* n  l( f. \6 }

# l5 E% @. u( W) f$ ~9 xask customer [* H9 t$ B7 f9 _% n
update-local-reputation1 z: ?& `, S5 I. H7 m& M% D
set trade-record-current
6 P' z3 x; h; t2 y( w(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 T5 E  [/ R( U9 N. @: @  i, u4 J]
' `* V/ h) {: R& E. @
, W+ Z* C) p5 G) C/ M$ b; Y

7 o- Z" }. Q( P  A" ^set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 O9 ]  E9 N1 M$ [. Y

/ G* R* s# s' g7 X4 G4 U- ]set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 \1 H& e( L, A5 h$ ?
;;
将此次交易的记录加入到customertrade-record-all
) x' @; ]! I: u' V" L9 t" @$ {# Uend
$ V: F$ w- [7 A6 h+ R0 C0 j; p2 T1 T9 i5 i: \: \
to update-local-reputation2 b# d" V' L! h' g, a
set [trade-record-one-len] of myself length [trade-record-one] of myself3 }3 e  U0 |9 O

+ f- a: U  b3 p5 K6 ~/ |* S7 C% [
;;if [trade-record-one-len] of myself > 3

- _& u9 C! f' ?5 R6 ~* `. Aupdate-neighbor-total& ]4 @6 W# D% D! x
;;
更新邻居节点的数目,在此进行
4 H: b  t2 R0 H' H5 P2 Tlet i 3' I1 V( `% _- }: R! ~0 U" ?
let sum-time 0
8 B# x, P7 ]" n( n% F' wwhile[i < [trade-record-one-len] of myself]2 a3 M) f0 a1 R- o3 I! O
[
8 W: M: _* q) f0 W, G2 Q6 n4 ?set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): b! B8 T( N# m6 L, I  S
set i4 V3 U: c- n- I, `9 d/ ?" H+ k
( i + 1)

' G+ }+ P4 b( J6 g* s" C  Q# }]1 n% F. N- V, S5 g
let j 35 ~* y5 P. M5 K9 `  M( k" i8 I" |) ~
let sum-money 0
. |% [# P2 g5 v1 {$ A! Owhile[j < [trade-record-one-len] of myself]$ ]: ]  ~" {6 N2 `
[
6 S, X- ?5 c( u4 H3 F7 Q. r& Qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)# g/ p. J' H0 k2 d% p' i
set j
; S5 }  \! D$ J# X4 L( j + 1)

4 F: p; Y: n) l8 F], M$ j# a% j/ I( r  c# J
let k 3
0 D0 C; s, o" i" _  Rlet power 0
7 t' G5 s; y, {+ K- Elet local 07 L  U* D$ g2 Q8 a8 l/ ?
while [k <[trade-record-one-len] of myself]
! A4 E0 R  E. M7 F/ w[
" {: @+ m9 e# R( e( l, z" fset 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)
0 T' b/ w6 k  ?" V( wset k (k + 1)
& |) ]5 J( N4 G) N# h8 o  R]
6 K# z8 t/ Z& X: i% h. F! b& @" b2 _' Aset [local-reputation] of myself (local)% f8 A/ w3 W6 }
end
1 `9 h' f& T: D$ G/ w
3 U" Y# W: U" C/ G8 i$ q" ^% Ito update-neighbor-total! u+ J% m7 E4 k, B- O; b

; d- L5 \- G9 Gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# p( {5 d+ E& S) F3 {! j' L+ B; Y' ~: b% W/ p+ t' J

+ U  D3 t& c' A/ Q0 }* C& J$ \4 x9 x% H) Hend
  y0 ?3 ?- N* m
9 m# j" B% X6 z# j" {to update-credibility-ijl
5 L  T# L$ F2 v* Q  j. y) `1 E" g. P9 @- _3 |; g1 @
;;
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。
4 w. z/ B% Z, |! g2 h8 nlet l 0
3 J0 @* ?; ^6 e6 |while[ l < people ]
( \& E, h% s* j! h" E! t* j% 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% C0 d/ F7 f, Z/ L; y2 j
[
; f% O; Y/ l% s, G9 S0 Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)  R+ ^6 ~0 s, R5 k
if (trade-record-one-j-l-len > 3)
3 i8 \- z+ \! G! }[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% _/ g. ]$ ]! M1 |: E1 K! @( Z& Z
let i 3: a5 q% m+ m% C1 S" w. R9 U9 g
let sum-time 0
( X* z2 O: c3 [6 X% _while[i < trade-record-one-len]
6 Q/ F: y" L4 D3 P; w3 v1 W- {) B[
0 k) m, w+ ?) v% T' G+ N1 L4 Cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ P8 @0 X( l! d' j6 k# L/ pset i
% y. q% U) C, R- j/ Y, e( ]( i + 1)

1 d" V$ q0 m$ G! G3 w( \# H]# D! g& p2 j  P+ F, N3 s: Y( i* ]
let credibility-i-j-l 0, r0 ^$ o) b, ^
;;i
评价(jjl的评价)
! v$ b8 ^. w$ y9 V; K# rlet j 3: ^  @1 T# `3 k# N2 }
let k 42 W. `6 h9 [( h( B# V& _
while[j < trade-record-one-len]
' _; G6 [& h$ a# k7 E  g: P9 N[
0 p' w) t* L1 f/ G, lwhile [((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( D; ~" W5 h) b$ R  q. @. w
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)$ U3 O+ u9 V; V* m' a6 Y$ f
set j
4 w; g- x9 y# ^9 F8 t( j + 1)
- Q3 Q8 x' n; U9 P" r$ F
]
$ y' j  A# _& H4 q1 a- f; z" Bset [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 ))
# V9 o& u% C8 ^/ `' ^
+ q3 `# Z) e  K0 v1 T/ x

6 Y5 w' J6 w2 G3 Jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) n2 u7 G1 P7 o
;;
及时更新il的评价质量的评价# I5 v  f+ ]' o' x. [6 H, r
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 |4 ^. S% m# k2 P
set l (l + 1)
: @0 c* H9 W2 {6 G$ z- []
. k$ P3 v( ^, Vend2 L2 T. N$ @+ d

! ?3 u9 t9 U9 ~5 ]: `1 n. \to update-credibility-list
% D) {/ [5 b8 z- nlet i 0) I+ B" b, n3 _3 C
while[i < people]0 B/ r7 o/ O1 o9 _2 m, Z
[4 ?5 `- X. ~7 ]  o% U
let j 0
# A7 x, ?% L- x$ wlet note 00 @/ J+ p3 P# x: P; [# d
let k 0
& z; I; A0 T3 K;;
计作出过评价的邻居节点的数目
% ^* ^! Y" p* q6 f5 ]) m# bwhile[j < people]+ N8 x. N8 o/ y0 @
[
* ?( X1 f3 A, Z/ s( Y5 Z. qif (item j( [credibility] of turtle (i + 1)) != -1)
/ e# G; |# d1 \1 ];;
判断是否给本turtle的评价质量做出过评价的节点
2 T1 w" d# J0 }[set note (note + item j ([credibility]of turtle (i + 1)))7 \8 Z) g. _! `3 o5 D
;;*(exp (-(people - 2)))/(people - 2))]
  T; R5 g, `5 o3 E5 C6 l' K1 |' W
set k (k + 1)
$ p' O) A! N" ~]& ^+ Q) J5 V5 }. ~2 z$ q
set j (j + 1)
3 f' |. I9 D) o8 l/ []; T# R% T) x& ~5 h- T
set note (note *(exp (- (1 / k)))/ k)+ J9 I0 a) @# ~# s8 M2 ?2 Q" _
set credibility-list (replace-item i credibility-list note)
7 _$ [8 J4 p6 Z% Sset i (i + 1)4 H8 ?0 b# d6 D. ^/ ^1 y
]
; f/ {1 U% u) ?7 g% H$ Dend
7 d6 P/ }8 F9 H1 w( Y- `- `9 Z& J! x1 L8 s3 u0 T8 ^
to update-global-reputation-list
) }; y) L* a& n3 ^, ]8 K3 Xlet j 0
- @) z) K. u: [8 ywhile[j < people]$ o3 B- y4 }+ ^
[( u2 ^8 {" W4 m$ E# X
let new 0! l7 E; i0 |: z. S
;;
暂存新的一个全局声誉
1 M- w# x6 R) dlet i 08 u& W! l" Y- ]" B# z
let sum-money 0
" o% Q3 G. S, H2 D% `* Xlet credibility-money 0
2 x7 g7 N5 c( w. p- L" }6 iwhile [i < people]: T# s! B0 ]6 L' F9 b
[+ i/ R% l2 e: _, l; F5 E
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 ]+ W7 i  }6 L; W' }( M' V2 }set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" g* S0 f3 B; fset i (i + 1)
- d1 K+ |: W  ]2 y( f( L. d! t5 L]8 i4 _# j" \: W; W' V/ f$ ]
let k 0- p/ s/ h+ G5 c  V( R& X5 m/ S$ }
let new1 0, v: ]1 z) T( d; y% i
while [k < people]; Z/ \0 l7 w% P+ O! z
[
* i9 X4 \8 v  o: {. W5 hset 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 y5 b+ ]9 N. w% a$ s9 zset k (k + 1)
1 [& w! Y9 b# ~4 Q]. |2 H# E$ v  Q1 G1 S$ D
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 {+ t% [( g. g
set global-reputation-list (replace-item j global-reputation-list new)  X  j; \! w9 E# U
set j (j + 1)3 `; g3 r# \3 ?9 p3 d  e, X
]4 K' U- k+ K0 E: C( w8 R
end
3 g3 k& r5 b/ @  t6 \# w, k& M
; G! X5 n( R9 ^. H
% I& Q' O: K" M- \; ^* y# w6 t+ r# J( u, Q5 @' D8 Z* F
to get-color
! k) e% A6 d+ V: b% p( ~4 T% Y
3 K$ p. x: u- H8 @6 a; r3 vset color blue
7 a4 ^3 K" f- l8 r, t
end- U. o" r7 h' M3 k: D9 n% o

2 e1 x5 j' s. k  A3 bto poll-class
# ^0 t$ I* R' v0 `: Y9 uend* c0 E! Z9 [+ R9 d' F  a. Z

4 P- X* F# T" K2 _$ G9 n% o' j1 P. gto setup-plot1* O3 W2 S6 f+ }# c

$ H) X  {' w; P$ [) @set-current-plot "Trends-of-Local-reputation"

: I* b! H  W6 F8 D  f- Y6 k
* T% Y' q, Z6 }, j+ x" c# D3 Yset-plot-x-range 0 xmax

! N) q  g' u4 ~- U2 Q4 V, B
" ]' J+ S% E0 Y& M3 n: bset-plot-y-range 0.0 ymax
+ |, J% T1 ^4 n8 \+ a1 ]
end! H8 C8 y8 P+ }7 _) B1 a, ~

4 y8 z& A' d7 e( ]6 pto setup-plot2
9 ?7 ?1 l" Y' Z8 B5 H1 q2 C
! D! W( C5 T0 X) c* K7 z, {, `set-current-plot "Trends-of-global-reputation"

( t0 v/ ]$ C) q, s* f' X6 E1 p/ v' P4 [3 i- r3 b2 }: K
set-plot-x-range 0 xmax

( u; M8 ?4 W" v) \6 W+ C) c) ]% j  r; O1 g6 ?
set-plot-y-range 0.0 ymax
, z: z' ^9 Y/ j( g' O
end8 z6 ]7 {, a/ g& B' e& A5 I/ J

6 z# [4 H7 K  u' E6 ~( g/ Ato setup-plot30 ~( r- S7 W+ t  k4 K. }# B& j

+ ^3 z! B# X7 w7 ^set-current-plot "Trends-of-credibility"
* q" D6 v, o: J
1 y: a5 m( J  N5 `
set-plot-x-range 0 xmax
; m2 `# z, k& [  W6 F

; L* {5 a" p! y6 [+ Lset-plot-y-range 0.0 ymax
! e& B0 j5 Y- y. f' q8 c/ e$ O. |
end+ I0 t. s! d( X0 f& L# G

( u3 o! D7 y" k/ S3 qto do-plots/ y* v+ Y6 \8 d! I& Z# f
set-current-plot "Trends-of-Local-reputation"
* A/ D, q  @, `: ~0 H* lset-current-plot-pen "Honest service"" H/ Y, [' Q$ P4 j  w1 ]
end
$ v& u9 P, X. U! Y0 o$ I3 q8 s& d
! E' `5 z3 m7 v[ 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.
( I# u0 O! |; G6 C& }: E, w0 R7 v2 @, y# J0 W
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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