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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:0 l) d, }+ S( [; E3 J3 h5 ?9 b
to do-business 9 K5 g- E5 G$ I: ?6 {& j2 ]
rt random 360( _! v% o1 s7 C
fd 1
* q# [7 e- Z" ^" m  O: c( J% D ifelse(other turtles-here != nobody)[
# |5 @8 S5 |4 x% I; v$ k   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.6 ]* m. c# e3 T7 h% ]
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . [" ]. ?- K  ~# s4 A( D8 R+ u/ o0 {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 l$ C$ I0 z. i9 n   set [trade-record-one-len] of self length [trade-record-one] of self
0 ?# ~- E6 z: @! T; D4 E: w   set trade-record-current( list (timer) (random money-upper-limit))
6 i; W/ ^) |1 s
; u* m$ }% t; I) W( b; r* R问题的提示如下:
- S; r$ W3 B& c" O
+ T7 y( u  i. ?' @error while turtle 50 running OF in procedure DO-BUSINESS
$ v/ G# S  t9 c$ e  called by procedure GO
- K" y9 v( ?6 D( l- _! @OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 }) E2 h" i! Y
(halted running of go)# \$ u4 Q# R& D1 t/ ?

) u; l/ L' s5 k- i+ [0 O: z. p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~~& h& R1 }& |+ m. e9 c9 ]4 A9 K
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' o( F+ q- k4 }! ?. E* j
globals[
3 z8 z+ L9 t6 S2 l( o& Zxmax7 j) C& K1 G- b
ymax* Z% g# s) c/ d  D9 s
global-reputation-list
4 p# t7 W' M" p9 ^9 I( G' h- F4 Q% _8 \" ]
;;
每一个turtle的全局声誉都存在此LIST
& ~5 V6 g- w0 B# Y! rcredibility-list( a. C/ U/ I' \
;;
每一个turtle的评价可信度* \+ p3 P4 k4 C0 q. ^6 a% |
honest-service1 q& @2 ?; r5 ]/ D# Y% u# `
unhonest-service3 e1 F! }- \  p0 e9 u6 |8 w
oscillation
3 h7 ]& G$ |- U4 ^! I: y/ Qrand-dynamic0 U# o& O, L. v& l; x, t
]: {  W, z+ Z0 @1 m" _5 [

( A6 J2 l$ N  K; v) D8 L- tturtles-own[. r, E. e3 S$ V8 ]0 [0 t6 \. P% c* Z
trade-record-all
3 R  I# g, Y! r4 z;;a list of lists,
trade-record-one组成
. ?5 L  i) K& P  b4 q, b+ s$ `! @trade-record-one* \- Z; I6 ?/ f. J9 U8 B
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ \# m0 R6 J. N" ^8 S

8 Q! o; I. B7 m$ k: ?9 x3 e3 X* P;;[
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]]
8 n1 Y3 E3 J& v9 {" I: E/ strade-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]; C5 j8 h! \& O- R4 V" Z" M
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list6 ~4 @  n  d6 `4 x! H; V
neighbor-total
/ @% s  v7 X! Y4 x;;
记录该turtle的邻居节点的数目" I3 Y" l) `! l
trade-time
( }, V; O- r# W* ^( ]: l' v;;
当前发生交易的turtle的交易时间
) m9 |- W0 O! r( {! o# Aappraise-give
% N# l& k) G& s' {& T;;
当前发生交易时给出的评价; Q- v; z2 O! l
appraise-receive
( Q  z* P- i# `' F3 g& |! w;;
当前发生交易时收到的评价) i3 h% D" x* g
appraise-time& H/ W, @' }5 Q( V& H7 Q  x
;;
当前发生交易时的评价时间! W; a2 L; I7 G0 t/ {% H+ [
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
# ?/ h+ \/ K$ y% Q6 p  g" btrade-times-total
) Y* ^9 n: `6 t% ?; P" q;;
与当前turtle的交易总次数- U0 F0 r; a$ ^- R: j' U1 O4 g' V
trade-money-total3 M1 Z+ l/ t0 B! u
;;
与当前turtle的交易总金额
/ h0 B* H/ I) m3 J1 Jlocal-reputation# O$ c+ x0 C4 e' l" ]3 E
global-reputation0 U4 x; Y) p3 t5 a8 O- ]
credibility0 V- T$ F& E+ G# |1 L* R( E1 Y
;;
评价可信度,每次交易后都需要更新4 Z) P$ W1 s% n+ \1 A
credibility-all  H2 i  `4 ^' ?. T
;;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# R- \$ }2 m9 @& U! @9 U- ]
/ \4 d, i, c* u. K, r' J
;;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
; y1 q) H) G. [& m6 Dcredibility-one9 G! r  i0 u# x9 N. T* r5 O+ d
;;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
& S: G( m2 G; |( M) N% _global-proportion
5 F$ F% U& M6 ?  ^, e" @* J' xcustomer7 r. Z2 `( G8 t4 U
customer-no2 R. a  I) W3 W0 j( s  U
trust-ok
& f+ p, K* J) d9 D" |trade-record-one-len;;trade-record-one的长度
: e+ f  |5 k# y# e. b# X3 n]6 o+ w9 Y( Y; z0 a- t" ?

& a  @8 L; c/ b6 s$ X5 N2 G;;setup procedure
' T) O( H' |& j& P& N5 z! ]' E( e. r; b! S6 N6 \+ c; b
to setup
+ ^' d8 R3 @7 b3 N3 h  x9 k
8 d$ s% \" i5 E( r& g' jca

0 i' w% i+ H- c1 X4 ]' y4 L: A  g0 ~' o. D  T
initialize-settings
2 ]3 n- b+ N! ]$ e% ^
/ k: N- D9 H1 U% Z
crt people [setup-turtles]
( b* U  f# k' C" m, h
3 P% Y& Y. C5 z% Q( n
reset-timer
7 p! ~9 I9 k0 Z
- I0 w; u$ m9 O
poll-class
3 ~1 R# g3 H; G. H0 E6 u

6 G# O' \, @) G1 ~5 ^" Isetup-plots
/ |* _# ^1 k. J7 S0 E& v, y# ?; X1 ^

! b' P: h: d# c+ Jdo-plots

' |( m1 I/ h4 V$ T& S' L' S& Fend: C0 l- v2 Y# J6 Z! L+ d
# |7 A# ~0 g" A" r/ b! w/ ]
to initialize-settings, a- ^8 l. r6 \: Y+ f
  \- x) B3 Y5 D6 _& K% C4 g
set global-reputation-list []

8 ]4 L) T3 u/ G/ G4 w. f' h* N, v$ v+ ?- B; {/ j4 x1 Q
set credibility-list n-values people [0.5]

8 G9 z  g/ o$ ]! f
$ K- g2 e! L9 l4 d9 ?, {7 B9 gset honest-service 0
" W# E* s3 L. h7 y
3 a& `8 N. x! W# h0 s" X
set unhonest-service 0
7 V8 j4 G' b% e
% h+ f+ D* `* j3 s
set oscillation 0
9 I$ t! b" M* P

) [  P' ?/ y6 a  U! l5 P- J! K1 Wset rand-dynamic 0
: @+ I" ~2 a7 y3 E
end
- q9 J3 H& z+ r- q
5 n( t& |0 Z, K1 I2 |$ q; F5 ito setup-turtles 4 F; W9 j. u& Q. ^- h
set shape "person"# {$ }4 E: u5 u, Y" ?4 b5 C5 W3 v
setxy random-xcor random-ycor
$ c: }( V- }$ o+ t( `" @set trade-record-one []
6 [2 g# g: X( E1 W
6 I% I3 E1 n, e$ e- B$ |. R- s' s7 K% _
set trade-record-all n-values people [(list (? + 1) 0 0)]
  T0 a' y2 m  S* X2 W

# j: ]5 P7 K1 A! P. K+ B4 oset trade-record-current []
& R( G- H/ d5 e& P% n- dset credibility-receive []+ Y5 r5 D& {; h4 I* o
set local-reputation 0.5
! I1 M6 q2 E0 n+ [1 l: jset neighbor-total 0
- ?" j) L; o0 \set trade-times-total 0" |( z, D# C! p) h7 R
set trade-money-total 01 G! ~+ I  W2 x9 M/ o0 |
set customer nobody
* z& g& K: T4 jset credibility-all n-values people [creat-credibility]
' L2 [( o" O( k% r" x( S) A4 lset credibility n-values people [-1]
! n4 V, Y$ ?7 O6 lget-color
- O* W5 F2 S5 Z6 |* _! X- D6 E
/ n# f) c# t' |9 y  M
end
1 H$ \: c2 q2 r- \0 }. a
9 @- J- P: u$ H1 L% J# Gto-report creat-credibility
1 \) X" l+ ?) z; Wreport n-values people [0.5]* q( z& y( |4 |9 S  ~( n2 b3 P
end
; J% f0 |$ P# A  F9 D( B  S2 h  a3 N" X$ B$ i; A
to setup-plots
) N* L. F0 i' g# y# O3 L) k1 {5 J8 v9 h/ f
set xmax 30
1 M' d. N4 l  P5 s1 {7 R+ f
& v! l0 j2 [$ f- a, [
set ymax 1.0
  o$ a8 V  z# X3 b8 x1 S: k2 {2 V

. w* y9 V9 y/ |: Y% |$ s0 Zclear-all-plots

* ]3 V& w+ ], q0 D; d+ h2 r- _$ W* z6 F
setup-plot1

0 x  U) G. C# P' l% n) G" r* E8 f) A6 ^5 U' L1 j4 Z/ m
setup-plot2
' `" l, L4 a7 [* B2 ?
" N  d2 x4 A/ {
setup-plot3
: X) C  g3 M" H) @- X
end% A: @4 `+ c/ D

  ?+ V! s, H6 ]  Q;;run time procedures7 s" R5 @" h4 z5 I$ \
- P6 M. \9 G1 i
to go
# j; f' P1 O6 R0 P" b
, @7 Z8 P( y( M" z. }  iask turtles [do-business]
5 c8 |) v8 R; S) K9 Y
end
, u0 }/ R6 j2 ~! M- k4 _. y+ ?( E$ @, w) U7 C/ @* p1 O" `
to do-business
* R5 E7 K* A; @" s) c6 g) L
  J8 {3 o8 L1 Y& k

) a  \) ]- t5 ^* b6 xrt random 360

5 x* j! l0 C) s* I# }1 h& M6 N/ b* ^0 A$ C& i8 O
fd 1
8 U: s' t; @0 N/ Z4 d! o

5 {# Z5 X7 y" S8 S  N, \ifelse(other turtles-here != nobody)[

' [- Y5 ^/ K1 S- v- E8 n9 }- V" H7 k6 h9 c4 G
set customer one-of other turtles-here
( n" p1 M" }% S: ~
( Q5 `3 T% }  O0 \4 \* G
;; set [customer] of customer myself

7 b3 B/ w6 s, r/ T' u) O4 r
, g% ~& o+ o: V/ y0 b' W3 gset [trade-record-one] of self item (([who] of customer) - 1)/ F  |* n8 T0 S- R) }. n, L) o
[trade-record-all]of self9 S. P3 s* W1 d- Z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ K6 L, ]4 ~, C+ V! Y2 s/ j- E' x( g  a2 |% j" ]
set [trade-record-one] of customer item (([who] of self) - 1)
- n& D& m3 H# @[trade-record-all]of customer
' W4 q- t9 J" C" r5 X  w

1 l: ?  z- L  K; m& K1 wset [trade-record-one-len] of self length [trade-record-one] of self
/ E8 k/ g; N+ r8 \7 s! V3 f

& p" q4 t9 Q7 q3 D: T3 h: K( y+ b' Vset trade-record-current( list (timer) (random money-upper-limit))

; A" C( u! u+ S( ]1 k6 ?4 `& G5 M* U) x( w7 M$ k; Q( d
ask self [do-trust]2 X$ h' v6 C0 x( J: Z  Z
;;
先求ij的信任度! S1 I, {/ _0 ?

* Q' N$ l' f9 J# p9 o* F/ [if ([trust-ok] of self)) l$ e+ u; L" G
;;
根据ij的信任度来决定是否与j进行交易[  I5 @4 N( k: `  [; g! ?; Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 O! J) D4 S4 x' I5 \: n. X% Q
$ N( x' D1 G$ h+ x[
8 @3 ^1 B* q+ `0 d$ f+ c! t

! _) I+ v' O6 s# w" ]* ?1 H" [do-trade
* i2 [* k# a) S) T/ `

/ h& c9 N+ ~2 u. Yupdate-credibility-ijl

' F+ y5 l1 V$ r/ H2 F" ?6 _" J: g8 o
update-credibility-list
4 O( \* V6 v. a+ d" f8 |; _/ x
& l( V6 Q4 g4 |, N3 X# b

# a$ |/ p* b3 _0 L3 }/ j5 b9 lupdate-global-reputation-list
  N2 J' R/ |+ W

& {2 [8 v, m& O2 O* Qpoll-class
7 m# F  [2 F' p& C; P. T

0 U8 B: m& S& j' P* R7 Tget-color
# B/ l$ i7 d5 _

1 u( L# S/ o5 o3 u' y5 w]]
: G# H4 W5 d3 m5 K# E1 x% U! v2 M+ X8 v& E: B
;;
如果所得的信任度满足条件,则进行交易$ A0 r; _; ]( Z2 @0 d7 P

. o+ L" f/ ~+ `5 L[

2 ]% M) L+ _# x+ c0 C. ?  Y3 B5 b
7 H0 X2 _; d9 v0 x" brt random 360
* S  b! Z1 D/ U
' q' O/ H" [* V. F! X4 Y( K2 b
fd 1

& l- S  o+ g2 X5 P/ ?% V
) ]5 M$ [2 ]( }# S1 j]

8 V8 Z5 Y8 f. j0 ~+ R" A# b. B4 k, R5 A
end
1 W: _& U3 e: D* P1 l' {
! }7 D/ {( h2 d" L  Z1 N
to do-trust # l6 D! }  e& l9 S4 R, Y
set trust-ok False
  x( k/ n5 x" D' f8 h% a4 i  B
) j: I/ C# B+ L* j. \
# l( }% G0 F9 {7 r7 k
let max-trade-times 0
8 f1 s6 l4 g% w5 r% i' Fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 U! z/ q) D2 ?
let max-trade-money 0
( W% c: f" w) h$ x4 B" jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ Q+ p% Z/ q- [% n) }let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ ~, M5 m) f4 K7 o; Y& l
. t, p6 f0 C  t
' g- U% O9 m( \1 h% e! ~8 O8 ]. F
get-global-proportion
, Z* W: A2 R, o3 w7 Jlet trust-value9 d, B9 y1 _8 H4 l+ 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)
5 j0 ], \+ [- k) E0 g
if(trust-value > trade-trust-value)
- k: H; |0 m& U3 M7 B/ ?8 e" P[set trust-ok true]* T, |/ s: _# r# y- y9 b
end  W0 \1 M+ u6 c4 ?! H" Q; D# X% F8 A% q
" q: o  c/ G* \6 ^, u
to get-global-proportion
# T, B6 S" N) \' S5 [/ A( eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 y1 Q8 Y2 I+ O# |
[set global-proportion 0]# u% T* K0 B4 _5 D; Y, ]
[let i 0
  G* E: D* ^; x: j; ~let sum-money 06 q$ L: p' u1 q
while[ i < people]
. ~% u' [% y. h1 a[
! k( s# W! O: u# K" P" |3 @if( length (item i
6 I5 h, \5 S# i- d6 G8 l1 ?( y[trade-record-all] of customer) > 3 )

5 f9 V6 W" e) ?: F0 J( b[( ]' }! Y9 ~) Y, E7 q7 Y8 N
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 c- C8 a5 y9 x8 e$ w
]( o! h- A2 t) t$ I. ~4 K9 w5 R
]
% a% L; |2 d+ E: B2 J5 }% ?/ {let j 0, B$ |0 o5 s  }' o! G$ Y0 _
let note 0+ f/ e  m: [4 t/ s' Y; h4 f
while[ j < people]
, O4 x2 n* g9 [8 c- F2 E[, }# X+ S2 Q0 [2 ^1 }
if( length (item i
  O& |. N' h& \; q! Y9 F[trade-record-all] of customer) > 3 )

5 Y1 d- `7 d) L0 d" W[
7 e! J( O9 y4 L5 M# Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# J) \! ?. e- \+ |4 D[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 q* s& p$ C- o- M7 f' U[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; `% {& ]1 T* Y, w0 K! O+ K]" T9 l6 O& a' J7 ]% P: h- k6 f
]0 H, f5 s* z) y0 }) ^0 R( q
set global-proportion note! `1 g9 c& V* Y. L3 I
]! Y$ K8 @/ a: v2 }$ k
end
. e) {# D# g( F, Q# Z& W5 U. [- h1 j. X( Q5 T" `
to do-trade
3 G5 h5 \" p+ {9 ^7 P;;
这个过程实际上是给双方作出评价的过程
1 l# P, Z* f5 b, Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  Y1 r1 c3 o0 i/ ~% gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% e* M$ {! {0 V3 Z! U" B3 \$ k$ n
set trade-record-current lput(timer) trade-record-current
3 X/ a# F8 w6 y  \2 V;;
评价时间
6 P8 V9 s1 {( l# C2 |) aask myself [
7 A( J! g- c+ B6 v: U8 _update-local-reputation
1 I0 c* Y+ |1 |" s- r' X7 F1 e7 Q$ ]set trade-record-current lput([local-reputation] of myself) trade-record-current
2 H2 G2 A6 K. U% e9 Z]
) S9 u% n+ `$ O) i  iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 b; z2 ]  l( J+ v) a
;;
将此次交易的记录加入到trade-record-one, L+ q3 i. \; x, f* b# s. {
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ G. t' ^% _" Q+ C6 M4 F/ P5 w; w
let note (item 2 trade-record-current )
) r' N- r) ], _& xset trade-record-current
: Y8 `! C1 M% N$ _+ ~& F+ S(replace-item 2 trade-record-current (item 3 trade-record-current))

' |. }4 `4 {5 O4 t2 nset trade-record-current
8 ?; Q: j. m+ Q(replace-item 3 trade-record-current note)+ F' e, ^# b  t0 I
$ {- H# `. ]: U; s, s5 ]
& J3 }& g, P' t& m/ e, A
ask customer [
6 f) }& E' `4 [4 L2 aupdate-local-reputation
+ i) E& T! L+ }/ yset trade-record-current
3 p7 l' A3 n; [8 J7 k$ B(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 F% E2 {) Q" t5 S+ T1 M# `]
" x7 W. K% O  |% A2 z! Y0 C) k& }
4 d$ X9 B+ b; a3 I6 f
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ m) ^* o# c: m1 N

# l; z9 @- u* x- C( g, gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! g; ^5 d6 s: B) V& J;;
将此次交易的记录加入到customertrade-record-all
: x* @$ {4 {3 K# A# _, K. L7 o* mend
% }) I$ i& C4 n( V( M$ C4 a1 d- ~0 R( O6 f. u
to update-local-reputation
+ }" w' V# ~. Z; |: M8 M7 Pset [trade-record-one-len] of myself length [trade-record-one] of myself
, @8 Y/ |1 q8 c* @& r" d7 k+ [! ~( x# j' G

4 Q+ i$ Y  ]+ Y( X0 q1 A7 y;;if [trade-record-one-len] of myself > 3
% A7 Q3 b# a3 R. z7 s" e
update-neighbor-total6 k! q! m2 ~5 c, v& W
;;
更新邻居节点的数目,在此进行6 f: y$ ?& ]$ @% n$ c
let i 3
. q4 g2 }" h' |( Zlet sum-time 0; K' P; v1 J" @3 h) @
while[i < [trade-record-one-len] of myself]
  z& W/ m8 [1 z& }# l2 u  |[- t, h0 u7 z" A' y& A, |9 p
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 T7 O) G5 X4 ~+ O" Z6 d$ Y- ]
set i
! x3 }9 s/ f! Z& y: w8 j( i + 1)
; ?# l0 W4 v& \( M" J' q. u
]# X3 I- @2 ?5 b1 R: W
let j 3) q# U! a- C$ J/ r+ ?- G* ^
let sum-money 0- r# f7 ?5 V$ p$ y! E9 T5 P
while[j < [trade-record-one-len] of myself]3 L1 @  }' b% L; J
[0 U; R% L6 `" t. }( P9 b: G
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
+ d! ?- l9 v4 [& Lset j6 z  [3 b; @3 j
( j + 1)

5 ?( O+ O% j) t6 Z7 V) q]. x. z+ Q& D9 U8 `1 V
let k 3
$ ?1 ]5 v2 n6 X) |! Plet power 0
1 t$ u- P" c! Jlet local 0
- {; `" \; G) Iwhile [k <[trade-record-one-len] of myself]
+ t( ?2 O+ O4 B9 w: U[7 H6 W; b0 u8 Q: X2 K
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) * U6 j3 @$ h1 o2 A) N2 l
set k (k + 1)
/ L3 p: S; ]& Y]0 M) p. B* o# V) k1 y3 C
set [local-reputation] of myself (local)
( ~2 j, Q/ f) f7 I0 R7 p6 Y; p& pend& N  C+ p3 r# E9 C: |

8 K9 H* u1 U* v8 Hto update-neighbor-total- \9 g* |7 ?4 g" |0 ]5 ?) s' e

" y7 H: X+ i; Q3 ^2 |0 D$ t: jif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! v( S  H- k/ Y" K, b2 g3 T- i( |

+ _1 A5 Q) h' D* T; v

+ ?: l3 r! f& x2 Vend/ r% Q& g2 ?  }, V

* K+ G8 g. G0 oto update-credibility-ijl 5 i6 |  x3 B# o6 \
3 n  _) H& L( q% ]; u
;;
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。+ V1 `/ B! l5 M1 X" T% M
let l 0& l; |8 }5 K9 m3 C; f
while[ l < people ]' B, Y, Q# }. N1 {2 Y) A. S
;;
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
% I; v* v- \4 H: {: h/ h2 p9 Q7 Y[( U7 Y2 x3 B, n2 g
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 A! R/ X2 V  {- z1 O% Bif (trade-record-one-j-l-len > 3)
% N/ T/ R5 U2 u& ~: N# c- J[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, n( @4 Y) n' \6 v/ L# h4 d  V
let i 3
) p! I1 Z: d' q. @$ ?5 [let sum-time 0
! e1 s. h: D: c1 c4 J* Awhile[i < trade-record-one-len]* @. }( v& [9 |
[( K: ^9 H' E! o( D  X+ j8 Z$ ^( z4 W
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( k9 T* g1 h' s5 l. fset i
, u* ?" `8 a& k: C. V$ {& U: e3 W( i + 1)

. {- C: M: G; Y3 O: P6 ]+ A]/ s9 U; [8 v+ X& v) I3 I* F
let credibility-i-j-l 09 Y3 q3 F0 Z8 `0 [3 _- f
;;i
评价(jjl的评价), k% p: y/ o( Y7 k4 Y/ _
let j 36 V: `) X1 Q* _5 G4 |% E% s) ?
let k 4; Z5 f6 [/ `# C/ O% P9 w& l4 n
while[j < trade-record-one-len]
+ T( e$ R6 J5 J$ i& y6 M' d3 o6 A2 P[
8 {* O: Q5 t' F. Vwhile [((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
  ^* O) T$ t" q3 Bset 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)
; s$ {& {% c- `- G# Q+ ?! q7 z" t0 ?set j  P; j' `7 B* V, M* v* W
( j + 1)

9 p$ d. I  Z, V( n1 g2 u3 z- {+ Z]
9 I7 l) `/ n6 w, L( cset [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 ))
# \1 t$ t$ }1 `' f) g9 E3 g- h. U! H/ I+ P

6 w; Z3 D$ V9 W7 h0 E. Hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); b  r$ X; o9 N1 s
;;
及时更新il的评价质量的评价0 a/ P2 s+ G1 d* Y: O; y' z, s9 ]; `
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# x0 n; O( w! b8 B/ U" c+ s
set l (l + 1)
& X/ e; _$ t6 o* M; z]
* F; q1 w- l( x4 E  T; C9 qend
/ ]" l/ |) L. ~/ o1 a9 X/ @' N
& x  |; }( ~- i% ]5 d9 Kto update-credibility-list
+ u3 ^, D6 w5 L* H) I* Xlet i 0
8 K, L+ O4 u0 ^while[i < people]! `0 x6 g8 c% O; U2 Y7 ?# m+ j
[3 I/ ~1 n7 j0 j# v$ z' b
let j 0$ k4 B  ]0 T  ]# R9 ^# z! e$ C
let note 0
) B6 g" x9 U" S8 glet k 0/ I" m2 Y/ v% J) i0 C8 Z
;;
计作出过评价的邻居节点的数目& w+ H! E) j8 F1 |' T# Z7 `
while[j < people]. b/ c7 n  q% @$ F5 t, T: a1 `. n
[
* a) C2 y+ i0 ~; `2 i, @if (item j( [credibility] of turtle (i + 1)) != -1)
$ R/ G9 R/ m, [# x;;
判断是否给本turtle的评价质量做出过评价的节点
5 z+ H% J" V% k8 a[set note (note + item j ([credibility]of turtle (i + 1)))
+ Z+ }( y# R* y: c4 W;;*(exp (-(people - 2)))/(people - 2))]

( C$ v) p8 ?% q1 G$ r& kset k (k + 1)
1 i" t$ z9 w/ N. c4 @]" E$ T+ S5 Q' B% O; }7 w- O
set j (j + 1)- {0 }( q" ?  N
]4 S& T2 G. C9 W8 k
set note (note *(exp (- (1 / k)))/ k)* Z# s# f; c6 n5 O0 e, T3 K, }; R) g5 @
set credibility-list (replace-item i credibility-list note)
6 l5 x2 M5 x1 \1 k" p. x# T2 pset i (i + 1)
3 d( Y' v2 u4 D+ M8 O. R]
6 D* K; D* p$ W7 W. {( jend2 [* a5 c+ {2 z

4 t2 T  c# Z4 `6 u  Mto update-global-reputation-list
3 f" I; U. J: |0 \1 Xlet j 08 c, Z9 a: v( f4 b$ i
while[j < people]
  j- W2 ^  Q) `. M" z[
" B4 c/ A+ O) @' s6 plet new 0
$ V6 B$ i9 Y: |9 F( Y;;
暂存新的一个全局声誉
" M: k7 w" N- H7 u  \) p2 W6 }let i 06 f, j% x/ |# I8 l' |
let sum-money 03 G1 ~$ t$ }% d) N# Q; X& \, k2 Y$ g
let credibility-money 0! c/ z" \, Z* H: I! y% q9 G
while [i < people]/ l  w2 H% p/ b4 V2 K/ ~$ W
[
9 r, t! q( j1 ?' T/ Mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  Y$ }9 A& V" X9 `3 y7 T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& v  t# e* \% g. B, J" Y1 g3 }2 [set i (i + 1)1 i3 I9 m5 }; n% O' E4 y
]- A* f% ]; v/ b& I- ]3 d9 G; L& ?1 i& o
let k 01 v" t* M2 C6 U+ @0 \  |- j
let new1 0
( ?, s  Z( h% \# q# h+ `4 T/ N' T! lwhile [k < people]
+ D& Z: U1 R; R: Y[1 C- T0 g: r0 F3 `8 _1 j8 f- r: @
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)
+ x- M( l# E; [8 ~& |8 ?: ^  zset k (k + 1)
4 I: g  M$ C- p" M# N; o- L]+ C1 g) l+ O$ A6 ^
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 n% n2 U# X" L5 G, dset global-reputation-list (replace-item j global-reputation-list new)
$ R* i+ h  i" ], ]! mset j (j + 1)
, Q' h( n! k9 o+ S! {  j6 H' t]
' s+ f' Q1 F: i4 H/ ^# Tend
/ _1 }% i% L2 L6 K2 W6 b
: E6 O8 j& |* ^
' n# z" B0 ~* R+ d: [6 Z- Z8 _3 `, P/ W! e
to get-color6 l" O5 h& A5 _( w4 ?  D" L
0 k+ S9 k$ L& Q, A2 m& N% Y5 f
set color blue
# w% t+ M( T8 B; X$ U$ N
end0 r# d. }4 d, n2 ~- ]
- X5 c. H+ B5 n# [
to poll-class. _% r1 N7 d; P1 c4 E9 h% A: Y
end
, O, g) O. J: [% Q4 \4 s, ?- ?- h1 w0 S+ _+ L/ `" m$ j2 Q
to setup-plot1/ i0 C; _3 Z3 i' u, P( C+ c

) {+ h9 _, Y7 x, W1 ~$ n! l" Gset-current-plot "Trends-of-Local-reputation"
0 K( p# i1 W7 p( s
) S) m* {; L5 j4 L9 h, H
set-plot-x-range 0 xmax

1 G& Y8 `8 D. n# ?, p) _( a* J) y3 Y, e5 \- O2 Q; ]
set-plot-y-range 0.0 ymax

" o' z; r0 y/ \% t8 r. g, S7 M! wend
) Y3 G2 o5 d* r  f* N) C* J
6 b- z( f. w: M* y2 h7 e: {to setup-plot26 l5 R3 A  n3 a$ |) Z. S/ D
% }. H! G& v- f, ]$ W7 K
set-current-plot "Trends-of-global-reputation"
3 F0 z. V9 T9 @% E4 M4 f& `

6 ~4 D( B, q) r  n7 Nset-plot-x-range 0 xmax

2 s; r- j8 e1 k/ t- |7 v* X9 ~1 l# _9 {: s* [+ Y0 u
set-plot-y-range 0.0 ymax

, `4 S# d7 l, T  [3 Gend7 P! R( F- r" _5 h8 @: C1 f$ `0 b
, ^' v" G/ [) a' r
to setup-plot3$ X' P) ~# e* K' u! i

, R  C; p; c3 m  P' Yset-current-plot "Trends-of-credibility"

: P' S0 Z. m5 k7 \
6 V5 }8 v  K. g" T1 gset-plot-x-range 0 xmax
' a1 ]+ R1 G! Y$ p8 v& I

* a0 v4 R, {( o6 Aset-plot-y-range 0.0 ymax
" L5 n4 R/ x9 L( C
end
" J8 z( l( H: C& h' g
0 k9 W# ?5 Q7 E6 Ito do-plots( Q; v, J' o, {( c4 }5 K9 o
set-current-plot "Trends-of-Local-reputation"( S6 o+ \# \6 [) u7 ?- e
set-current-plot-pen "Honest service"7 v- a% C8 x+ Y$ y2 n, Q
end$ |$ g8 a, j& y4 S3 K
9 H$ C: x6 w4 |2 q. Z
[ 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., [7 z1 z/ l' b3 s! I

' D/ O. [' E* r1 Q! |0 B1 `' p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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