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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:& d7 E- {/ g5 h& R5 r! k9 @6 o
to do-business
6 y) G. [, t6 C# l  S3 _1 h rt random 3601 V+ u% B' U+ w$ b( m( C
fd 16 x& E7 k7 G2 n- E* e' B7 F, F2 J
ifelse(other turtles-here != nobody)[
+ l2 z; c% H; l* a$ d( S5 S/ c$ Y   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.& X% v2 G3 l9 b8 v
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 Q3 b0 d8 A3 r& |0 X* Q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 n+ Z5 @3 B  t
   set [trade-record-one-len] of self length [trade-record-one] of self# `" S! o# ]- j; t- |( x& L
   set trade-record-current( list (timer) (random money-upper-limit))
4 @, F. c' }) z% }7 K) u& x6 g2 v# n, T- \6 ?% E$ _
问题的提示如下:+ [, b4 y2 Z. N, t
  ?8 P0 x' w) x0 F" f6 Z
error while turtle 50 running OF in procedure DO-BUSINESS
" P' U' t0 S. ^4 ~$ I8 @  called by procedure GO8 s2 o3 h7 W" L% R" J- I
OF expected input to be a turtle agentset or turtle but got NOBODY instead.5 X  P6 ?: [. {) T" \8 X8 z) \9 G7 Y8 d" T
(halted running of go)
7 R5 |. U8 P) ^  j# l( Y
0 G- Z9 A: S- k6 o& y4 o% x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~~; P- a2 E( h* a! H& X) O- U4 g
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
" u  v# V* m/ R6 rglobals[8 a# _% l# t9 M$ P
xmax
  @4 \( [' W; D4 xymax
* i$ B3 s; S" U3 F8 P0 m0 b8 iglobal-reputation-list) y2 d. {. Z+ i' m" }+ N9 z

) a7 X5 q' I, e2 G% A; E+ ^;;
每一个turtle的全局声誉都存在此LIST, V6 d: m& D  d- h
credibility-list  i" {5 l5 T3 K! p' E6 b# u0 X
;;
每一个turtle的评价可信度
: ?. _2 W) O4 p' k# I+ y8 `honest-service$ B2 ?3 B! Q4 W6 r
unhonest-service
: h' {( @, L) E( ~oscillation2 T2 b6 W; X: ^
rand-dynamic( s# u2 g0 T! ]- P: v
]7 m* I+ Z/ u* h
( l; ^1 V) l8 _; o" r
turtles-own[
' m, y+ Y! H4 f7 t& R- vtrade-record-all! b6 @) l0 S* u& m8 C+ z% y
;;a list of lists,
trade-record-one组成
0 p0 B8 B6 e4 @5 X5 Atrade-record-one
7 Q" l- R% |7 m;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% E& L: W- T' B' U. I- F
" _( D1 B1 |: F! f
;;[
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]]
( t3 V- z. k& Y6 }- N+ ctrade-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]
9 W4 j* L% l" b" I6 f' \' qcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
5 k; @" [" P: d( g2 ^neighbor-total, K: _3 n/ Y2 i! z* @7 m
;;
记录该turtle的邻居节点的数目% x  s3 f9 j5 R& e5 M* F( ]& F
trade-time
2 r& f; q. P" U; O4 r/ Q;;
当前发生交易的turtle的交易时间6 Z8 @; P# ?2 ?$ }. A9 _
appraise-give1 e! a( I* `4 o8 y
;;
当前发生交易时给出的评价
+ b, n+ T) Z4 K+ K2 eappraise-receive
* Q/ H8 j  c% q( v2 o: u. G$ R;;
当前发生交易时收到的评价" A3 b& e. Z2 K% w
appraise-time
+ z; z8 B+ F* k5 f' i;;
当前发生交易时的评价时间
9 y) y* ]8 g, S: Rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ E4 P$ Z2 k0 ]: j2 g0 atrade-times-total( Y/ E- m$ }0 S: H* `
;;
与当前turtle的交易总次数
& B2 B6 u6 z! a, V# G) utrade-money-total
) N" f& u' ~" S% [' V;;
与当前turtle的交易总金额
% ?) B) A( n/ b' q" ]% ^9 flocal-reputation! Q2 H6 n/ ^* W6 r
global-reputation: L# G4 Z; Y: z8 e" x; r2 ^& C+ K0 F
credibility( r, u7 }, ?! f* n. c/ h
;;
评价可信度,每次交易后都需要更新9 w; }/ H9 w% j; V8 I0 G+ h9 g8 E
credibility-all
  Q7 t& w0 \" C;;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
. \% }& Z8 r6 @' t* O2 q5 I0 c  `
;;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
5 Z: \. F% y; S, k0 _credibility-one
8 x/ x6 C# N( ^. F! x6 O;;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( R& W. O! l+ i4 o7 a
global-proportion
0 _3 t$ Z- n, B0 V3 Jcustomer
% B; [5 V' x+ {0 [1 qcustomer-no
: G1 R$ C( z( d* @$ g2 ]trust-ok, m  v+ i# o. ]* @
trade-record-one-len;;trade-record-one的长度
, P5 N+ h. I1 M]
0 j* I. f! ?; T. G# `7 H$ t0 t. C. a6 H! s" P$ E" B
;;setup procedure
% S2 D5 U" H$ F# g( T7 g; y( l3 Y7 \: r& ?  d
to setup* P" I. d& r% O6 z" A5 V

, E" v( g. r3 W8 |7 U3 Lca
* D4 s+ \9 S  k! R* [8 d2 @

' C* g( H9 C7 v0 h! {4 ninitialize-settings

4 _4 x( e2 u9 {
3 S# [/ d  m1 {) |% {3 Hcrt people [setup-turtles]

( {$ R% L5 R# v  K6 y1 H- h7 v, a4 W" R
reset-timer

7 O7 e& w% T/ S% k0 s2 J9 m3 J
2 K/ W) g' T9 t! A. x3 l: Lpoll-class

5 k% X. V1 b3 S/ D' I5 J9 v; @5 O
setup-plots

1 Q! a8 b) o6 y+ e. D0 R
" _% N% T3 g9 p/ `+ Ydo-plots
" `9 J6 k' w4 K& R2 d; e; m' F
end8 r1 S& Z; X2 J; E: ^+ E

; z$ u/ o! P" jto initialize-settings
. F  s+ F2 ?( n" R  w: o% J0 _8 y  b' `. ~8 `1 Y+ I* k( z; m
set global-reputation-list []

5 w1 m0 B- w4 [  `* J5 X# W- o7 r, x: h2 P% e4 r
set credibility-list n-values people [0.5]

+ t2 C' Y. T3 i! t0 L' d3 E$ B% o( w2 r2 @4 }9 a
set honest-service 0
+ b5 A" T- g) s. I9 t6 J6 v/ b

: L- f9 v4 @' e, dset unhonest-service 0
9 `- |+ `! P3 t9 s) g. {# b
- Q& G0 u% U. \
set oscillation 0
+ w" ?5 V( s3 g& B

* E& c8 k$ G" }set rand-dynamic 0

6 s, P# r! t6 Dend
- {  C* r0 `4 ]: a9 S; f! U5 W
* b! b# }0 e/ ?+ j4 e4 t$ ]% rto setup-turtles
( \# u! b7 D8 N4 m% o# \. |set shape "person"
9 j% N  v0 G( vsetxy random-xcor random-ycor: w% M5 z; n+ Y% C+ q2 g, ?- o
set trade-record-one []- Z* X5 F& _4 e* T! _2 o9 L6 ?! a
# z; f. q+ O2 h9 m- _) a8 q" c" @% x
set trade-record-all n-values people [(list (? + 1) 0 0)]   M6 u7 k1 i5 ?( E. l
& ^# p# O6 x% d
set trade-record-current []/ g3 |1 Z$ A! E" N  T1 `
set credibility-receive []+ v4 |: h) [* }* x) ~7 W
set local-reputation 0.5- u2 T% _( N1 P# ]5 M/ e
set neighbor-total 0
) F- U7 c7 b: \( g( y6 ^set trade-times-total 0
. ?$ ?* ?; R, D. ?9 w0 aset trade-money-total 0
3 i" u8 D6 n: e7 ^; dset customer nobody8 g3 a4 }) a( I' }/ c( j
set credibility-all n-values people [creat-credibility]
: s5 c& u0 P6 Q& ]3 B4 u( Hset credibility n-values people [-1]
1 R2 H& k1 [/ _3 P4 }( M: o+ Gget-color. {8 D! q+ b3 H' |. r% d

/ [/ m- e4 D' M7 X, J: N  D3 Qend
5 A9 `$ F- H4 k/ {" i8 J* w5 l
; t8 W3 h; }9 n( V! E; _3 Ito-report creat-credibility9 h$ F' E- R! x* h+ D7 h' D9 S! @, I
report n-values people [0.5]
! i. l* n: y3 T! rend
2 b- Y' e7 ^# l" ]5 m0 x" ]" ~: ^' F) \
to setup-plots
1 W/ Z# x' d( U0 r. C1 V5 _
! d9 B. M2 {( F( ?/ iset xmax 30
1 \7 k9 s* V4 o6 o
4 A* S9 M1 k# M% D5 A- y6 B* Q
set ymax 1.0

: d" T, Y2 J, r- w) ?
; W* q( Y1 C5 ]! hclear-all-plots

( J' Z5 N/ J' s* y6 [
- H" l1 U2 U2 E! |1 Q- H5 _setup-plot1
+ I; L7 O6 e/ T6 S

/ }& c  }. ^; u1 _setup-plot2

5 B# \& {( {5 _9 K
' V1 A0 }" e% s" l/ o9 Osetup-plot3
; S+ k4 G& C  e$ w; G
end
2 P5 V* J1 ~( h3 X
: s. e3 P9 l0 a+ G# M6 k;;run time procedures5 y2 L" `; V4 O4 `4 p

2 ]/ ^0 `9 Z  B- Dto go' U( I- r) m2 @) K" o* S7 \
7 Q( B+ y8 @; W! f6 m; D
ask turtles [do-business]

7 @5 W' J! u- h" g1 kend
4 R( K: R5 E* g5 n! ~6 @% j. f& h% G$ E* m& T! |
to do-business . t6 g3 e- Q' X
, D2 p; ?8 e+ h0 J
, M* T/ t: B: t) W
rt random 360

) {8 l2 P$ X) X, L( s0 E. x# Q6 R2 _
fd 1

) }% z4 ^  b6 Y: k7 J* r5 Q4 H- p; d' z. k, v  L9 G
ifelse(other turtles-here != nobody)[

6 m/ m: K! [- z5 H& g
' p. p  V; ^+ y2 |# kset customer one-of other turtles-here

9 V6 N5 ~0 h( _8 u& u, h0 ]# Q0 h0 T3 P! c
;; set [customer] of customer myself

! f& D& c* P5 L$ v) K- E
5 f- q, Z/ h8 Y# fset [trade-record-one] of self item (([who] of customer) - 1)
9 }6 D: `0 {- i5 R[trade-record-all]of self% }  Q3 X$ @% d0 N5 Z; X  K9 i$ K4 ]
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 }8 N1 W0 r( j4 ]1 ?
' C! ~1 `5 [2 {5 \7 dset [trade-record-one] of customer item (([who] of self) - 1)
6 O( i' y! G2 o/ E( ]; r) u[trade-record-all]of customer

' D* P3 N3 ]& y
& D9 d3 D7 P, B4 _set [trade-record-one-len] of self length [trade-record-one] of self
) ~% F$ G& ]0 Q' {

5 C1 l) I' e  x9 {! c/ B0 vset trade-record-current( list (timer) (random money-upper-limit))

7 R, Q% d, W: O# k4 h) ^( p  ?" u& c  \7 a* j9 E& j- G- q+ s! ~
ask self [do-trust]5 B/ u) y0 K2 K! g
;;
先求ij的信任度
3 n+ y+ A+ f6 b& J( C5 a
0 n3 t$ T5 w7 K0 pif ([trust-ok] of self)
6 h# D, r5 w) G& s/ y;;
根据ij的信任度来决定是否与j进行交易[. ~8 k1 u  N, a  R3 H. G% N
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ G& f& f) a: [! s. _: Y6 q0 `' t) P
: f  ~8 }  w# N! E" u2 T2 S[

) h7 N, U: ~# ]1 R4 V$ ~5 F3 b" [6 M0 n7 V# m" b# P
do-trade
4 P# g5 j8 C% J2 A; M
, N8 l: k. k3 A0 @
update-credibility-ijl

. S1 }7 c7 t: R  _; A8 {% e  q2 P5 \/ M. J' l4 V/ r: s4 X
update-credibility-list
7 C( y: c4 f" x1 l
( V4 f5 |! a( o7 ~
# X+ @3 ~& o: o
update-global-reputation-list
) X; s% X) c9 N$ L2 c6 Y3 S
( [( @3 {1 }; u, X" L8 U
poll-class

9 c7 @6 S) ]& r; j. Y6 _, ?" I! N% _" O  c) I9 p- t9 O1 y- r
get-color
% I& Q& A: m8 A! Y* d/ z

7 ^/ j) b: [" V]]
- p/ a) T( ?( b
6 H( n# O/ g6 s) W+ }. k;;
如果所得的信任度满足条件,则进行交易- N, P+ Z1 k% t( E
7 [+ l1 c* Y) E/ q6 V% g3 ^
[
$ f0 ]! Y5 R* [
9 w9 v: n- O* h4 L: |
rt random 360

: p% _6 Q5 X' {+ }+ |+ f$ E8 [& H0 Y7 j9 t% _
fd 1

$ g* y6 J% y/ R0 L- ^2 Y7 W3 K# p  r; o; A+ ~: z
]
3 K7 v; T6 j$ r
; z6 U; W: t: D$ R+ @% `! W" G' Y, x4 P
end
0 t0 B& h: A8 ^* `

: T2 [( {: n6 X8 l$ I5 Uto do-trust 7 J4 A4 j3 M% G1 [
set trust-ok False
7 e8 S. E+ ?4 h. d8 P; v& Q" }6 y6 a
5 `- ^5 h3 {& s% o6 C. j+ o
let max-trade-times 0! [8 x  f* v+ B6 ~
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% ^- j5 I2 Q: P+ m2 @# ~let max-trade-money 0
3 f$ y3 ~* T9 R4 vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) a$ C. ^& L: P6 H5 L# blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ N2 P8 F9 c" d1 \( t1 v& I. v" S& d: c

+ u3 k( K0 o# O. ]: h& U: G6 Sget-global-proportion
' V6 K9 f, y3 [0 d: z# W" l! clet trust-value
' m# Y1 P7 N, s9 K9 xlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" k! G5 ~7 c3 _" o$ x  G
if(trust-value > trade-trust-value)
( t( z) H! w2 Z[set trust-ok true]
2 z# j- u" @8 Vend& G: s+ {6 P/ N- Y6 C
5 S$ n7 l% h3 I
to get-global-proportion3 v5 b5 U6 G3 {3 s, o% g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% M- v5 D6 X: n: k9 N# @$ H
[set global-proportion 0]
0 f7 N3 P2 J) y4 i7 v[let i 0# ^6 ~* `. {/ e) }3 t: J7 j2 f7 ~
let sum-money 0
: K- R( |6 _+ S# t4 R( U" Pwhile[ i < people]/ [5 z: G3 @( g1 d5 o
[
) d0 c: I* C0 J2 }9 u4 m# W5 Bif( length (item i; |' g: S4 e9 j3 [  M
[trade-record-all] of customer) > 3 )
9 K  w5 G  G) Y4 R$ z
[
( i6 _' s0 [4 v3 Yset sum-money (sum-money + item 2(item i [trade-record-all] of myself)); d) i3 M+ J0 r! V
]8 ?5 R& ]3 d# b6 L
]
; ^+ Q& f; ?- Q+ }# G$ |' }let j 0
8 D0 ~8 y* X! G2 e% n7 Ilet note 0
8 @" o# D9 T& [" kwhile[ j < people]
! R, R4 P% Z# R. n  L[+ |! p6 R; D/ e/ K  _
if( length (item i
- D% f2 `3 q6 Q; J- ]- ^[trade-record-all] of customer) > 3 )

  p/ K- q6 L3 P2 R[
+ p1 K$ R1 W- y, B! h% Z1 N! Eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ M" s0 D0 K6 J/ K% N7 m[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  o) [% c0 R5 _: y5 n[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 G6 x" b3 D, g* W% i0 h
]3 }) e+ @; L- u) I0 m' o
]& Z5 x& \$ }5 P6 [; D$ h5 h
set global-proportion note/ q, m  b/ ^& V% g( W1 O
]
$ b' j4 o$ B, j  G. tend' j, `8 @3 c8 W) }/ K" }+ E
2 E- z# t8 |* `+ ^1 h
to do-trade
' ~) j6 {" J6 g$ Q. j5 S;;
这个过程实际上是给双方作出评价的过程
4 X, R  p$ k) ]$ pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" u7 y7 l+ z) I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. A& Z+ ]* A; c7 ?4 ~, p) s( w6 j3 aset trade-record-current lput(timer) trade-record-current
  d1 v  ]2 N$ z, S;;
评价时间9 S; F* O( y" G# R/ r1 r! _/ O# {
ask myself [4 n9 G) g% O8 ^
update-local-reputation
9 d, M+ Z+ H8 kset trade-record-current lput([local-reputation] of myself) trade-record-current: @$ f2 L. S7 ?( ~- v0 G
]
0 j3 Q# T4 F9 ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) x7 e# i5 g2 |6 e1 q7 l( ?. B7 K
;;
将此次交易的记录加入到trade-record-one/ }: S5 y+ O5 X! O  x, E5 q1 }
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 u- N% T+ \! T+ I) c+ X1 Qlet note (item 2 trade-record-current )
+ A  Q. C6 o& p: s$ z; _set trade-record-current5 O2 v3 a7 a- u$ v
(replace-item 2 trade-record-current (item 3 trade-record-current))
1 }0 V9 N- t) P) U# X
set trade-record-current. o+ |* W  W) ~; `8 v
(replace-item 3 trade-record-current note)6 I3 p' A. I6 B% w' M) Y
2 r* H  p. f! u$ |
' D4 e# b  V1 G6 |/ t3 {* W
ask customer [/ E% ?- ~6 m, N6 h" \+ y2 V
update-local-reputation* ?5 n$ a% p. j7 U0 k
set trade-record-current
6 E" j8 J9 K& D& `+ @(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ O) F) _% Q2 F) ~" V( c]2 g4 |# _% H# g7 a3 y5 _: {

" q7 k: B/ @& v1 }  U0 ~
, f+ u* M3 k1 G5 Y/ w/ B
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. c& m1 m& _) R& H

. p" G4 q2 s6 E3 s9 b# {: pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' q- J5 ^2 ]7 K6 d
;;
将此次交易的记录加入到customertrade-record-all
8 Y' Q3 M) ]: _1 ^, Lend8 b; T( v) r" W7 v8 h

' k" p: M1 ~1 n- Xto update-local-reputation* Z9 M+ s4 z  x# J0 h& K  Z7 z! a
set [trade-record-one-len] of myself length [trade-record-one] of myself
5 u, R( r* S$ G8 ^
  M2 S, M! c4 i) \; N$ B  {% h+ n9 Q6 Q! x% {% H
;;if [trade-record-one-len] of myself > 3
/ ^) Q) o) Q: \3 g8 J" S( C% w4 @5 }
update-neighbor-total
' M, L  G! |+ W) D1 N" Q( M;;
更新邻居节点的数目,在此进行
7 N" Q8 s6 u7 P) A- r+ @/ {& Tlet i 39 F: x, ?  G* V. _
let sum-time 0
  |" d! Y9 M4 Q1 M, B, m  ?while[i < [trade-record-one-len] of myself]
: \( e' u4 y- s4 o/ L6 l[
4 ]3 O# ?9 [! d7 _4 M( x0 kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" ~" d. {6 h" r* z0 R5 jset i8 ?/ o- c, }  d9 `4 g
( i + 1)

  U- U* C, Y& z# p7 v]8 a: g0 D  v; |5 Y# x- t8 q
let j 3
" o6 y1 v. G7 m2 x' q& p5 b+ dlet sum-money 0
+ z# e9 {0 [! o# rwhile[j < [trade-record-one-len] of myself]3 F# S" w9 h) Z: K( S) s+ q
[# u: n, j) E$ r0 b6 a& B
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)0 Y8 v8 }. u* {9 L2 O+ l( K1 g+ r
set j, `3 v3 w+ n/ N$ ?* H+ U, N( O
( j + 1)
- I) ?7 ?2 p0 Q. c
]
2 c0 b' N" X+ O( S- k2 [% N/ R1 clet k 3
6 U+ j" F8 A9 g; \+ M  V* Nlet power 0# V' X- F: e0 j3 ]  t! K8 X
let local 0
2 D, u( w. d! S5 i  lwhile [k <[trade-record-one-len] of myself]
) L$ `8 O0 m2 b) m) K% K% }[# v+ f8 V" h* W5 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) 6 x& z6 m- L: e) v" o/ @
set k (k + 1)
0 A2 G$ o; R- Y: }& ^]
8 J9 z3 Y+ f9 ?# L  S/ P# yset [local-reputation] of myself (local)* L9 \9 J4 ^* C# M
end& {: u/ ?( T% _0 ^1 F: k

/ H) C5 n+ g4 o/ t2 tto update-neighbor-total
5 l9 Q( J2 o) @/ q1 \, M7 u+ \6 R$ z! D" r. Q! G# v$ w& G! [
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 ^+ N% s  V! w) U( _
% @7 B/ u5 |4 b# O
2 t3 {( ?* i( u8 K! _, L
end
9 Y" R0 o! z6 ~$ c) _4 @+ b' B
! z( d: U9 _0 K7 V6 ato update-credibility-ijl
2 i: A: x: s: _8 n3 v& g8 L3 G5 D9 ]" T& y$ u0 N8 M4 ]/ v
;;
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。1 K- R- y: m, }( N) Q# p; a# p$ Q
let l 0! z0 i) s* {6 ~: R# g
while[ l < people ]
3 [3 |6 K1 [2 Q3 S7 o;;
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
4 i4 }# z& T; L' m  d9 H& _8 a[) w% z" ~- J2 X3 v7 g! V
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 x* l" i2 D: mif (trade-record-one-j-l-len > 3)
& v; z# Y6 m/ S: ~[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
8 j# R' d/ a0 l/ l$ z7 \6 vlet i 3
4 O' g5 h" P0 x: w9 {! c: flet sum-time 0/ L* S6 `; b& T* J7 M2 K
while[i < trade-record-one-len]& s( W. I) V: x) M/ s# t% ~8 L
[; Z! B) B6 C6 a5 @5 D
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" \+ D+ k4 M( @! Y) O" iset i6 [0 m  m  p  t- Y% t; o
( i + 1)
+ _6 Z& `( z. C1 r+ F
]
% \/ F; @2 e! Y3 wlet credibility-i-j-l 05 z2 M0 {+ n/ Q
;;i
评价(jjl的评价)
, t! O" _( o; _( v' g1 t, g$ s8 alet j 3
! e' i5 i; j$ S! `let k 4; Q, }( s- I$ T
while[j < trade-record-one-len]3 l# C1 N; c9 P) |- o6 j+ `5 c3 \
[7 [: b2 p; k$ h& N* F
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) s) |0 E- d2 g4 C' U0 z' C
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)
4 V4 K& F$ Z) D' T; c! oset j* o9 [; G4 u/ R& t+ `/ n: ~2 u
( j + 1)

# K" i  c+ `8 n  m$ O9 W]
- _0 v" W# \0 U7 b6 _& v9 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 ))
- x# x; R6 E- m$ T, }& N4 a; p: {/ Y, a' |4 H5 D3 h
- ~6 x5 Y2 b. ]0 m$ E
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 R/ t0 \6 A- k;;
及时更新il的评价质量的评价
5 |1 w) s) X' B* c6 zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: V' p2 |* g) _4 X+ q$ O$ eset l (l + 1)7 {; z9 b, x' V6 e" Z
]5 M# k, B# j8 N" G
end
: e! u7 \- U' g' g* U$ G6 E/ R- ]+ q3 H  z
to update-credibility-list2 r3 b5 u4 f8 Q2 N/ j  j
let i 0
) A+ N7 l  g4 w# T, }, E( Y# Jwhile[i < people]( B' Y. p. d$ p; `1 N% ~: r
[
# K  \7 @1 N" q' Tlet j 0
- l0 ~' }, u4 k2 \( {; a/ z, hlet note 0
$ q, M7 z, r/ H7 vlet k 0
  E# Z# f: i% w: b7 j- W;;
计作出过评价的邻居节点的数目7 _0 F8 q* s& m5 ~2 M" {
while[j < people]% K$ D4 B5 P/ p& C
[
8 h# y6 n, W, G5 h4 vif (item j( [credibility] of turtle (i + 1)) != -1)& t" y! p/ Y7 H5 w$ w$ V
;;
判断是否给本turtle的评价质量做出过评价的节点
# S) }0 h7 x; Z[set note (note + item j ([credibility]of turtle (i + 1)))
7 x3 ?  O9 S3 Q1 q+ z" u;;*(exp (-(people - 2)))/(people - 2))]

3 q5 s) m5 y9 _  n" M5 C" U0 Cset k (k + 1)
. A! o6 q; \+ P]$ V; ^& V( ~4 n+ }9 @# z$ g
set j (j + 1)
6 L, ?& d6 ?9 _- A]
! e# s4 L9 e% b! rset note (note *(exp (- (1 / k)))/ k)
1 ]2 n# G; N7 E1 d( O' Wset credibility-list (replace-item i credibility-list note)1 L* }* q$ ?- n& M& Q/ X' \& Q
set i (i + 1); q4 M" ]$ g; u6 z9 R  o& \- w
]
& S! t2 ]1 ]+ D( l2 N; n* zend
& v" n+ E8 H2 x) S  K0 o; l( ^' Y4 r& a8 p/ P4 P
to update-global-reputation-list* O! e7 M7 l3 M# A  s
let j 0* y1 m! r5 n; Y3 I* V7 @: C
while[j < people]
* {# l! B/ a. T  M% F[/ r9 S1 w5 W2 o4 i
let new 0
0 a* R8 t4 ~5 A- s3 K;;
暂存新的一个全局声誉
1 O4 K, A3 N3 d9 y6 S; i0 I6 slet i 0
$ ]- F. L# V' T1 hlet sum-money 0% x% m# Q- o; [" R
let credibility-money 0
$ ~* M9 I& T+ h$ g& K4 e, fwhile [i < people]
) G9 r) Q4 E* ^8 [% B- p8 X' ?[( J$ H* V6 ~% ]1 _! `8 G6 t; ?
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: T( J1 l' [( H: F- zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% Q$ b2 U9 Q$ I' z4 Kset i (i + 1)
2 J2 y9 P5 b" ]. t: s]- N5 E& f3 j) u/ m5 ]0 C
let k 02 }# P) w3 X0 W" c* I/ g7 o: l
let new1 0& x! w# Y4 w$ I, Y% Y" D4 i
while [k < people]
; w! T1 }* s1 z$ o$ K/ d[/ s: H9 Z) M5 N6 _
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)7 J# z' F. S8 P+ U
set k (k + 1)
% m2 @( s  [1 P7 ?  u4 y]
2 q, \& E0 D2 B; Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& v2 S5 _5 ~0 h9 G# \* g; f% Pset global-reputation-list (replace-item j global-reputation-list new)
- ?1 L. u1 x0 n) j% I- W  o" H9 l3 oset j (j + 1)
3 k! A4 H  y4 f1 |) Z" z5 O6 t]& `2 g( v) S; z, e
end$ L$ e! ~: V  }( R6 e
+ t1 J3 ~; z4 f. Y) N. a  {* f

- l  A5 g% n+ C/ Z& @4 {% u" U/ m& [$ b, E: ^
to get-color
/ @1 h/ |" d4 S) B) `- d' T$ t$ }( z1 ]" Z
set color blue

$ }/ [9 a' p& b7 |4 y+ _end3 _# V1 `- }; J- p) o7 f) ]  d6 z4 @

# t2 r# {2 E7 c1 yto poll-class
& m" S2 \# |; D! ^. H6 L, rend: S  g1 @9 o0 F) C+ t# {0 ^
. ~: v4 r6 C  j" n8 q8 c* f
to setup-plot1
( ?5 y* e2 b3 m" ]4 e( Y6 h! P" t+ d7 H# d0 m! w+ H/ h* j) ^$ Z, Q0 J
set-current-plot "Trends-of-Local-reputation"

) \/ B- E( I, r1 c. ~2 ?1 r3 a, D9 Z3 y5 `! N0 l0 D
set-plot-x-range 0 xmax
4 T1 E3 P, S* |8 c0 P8 z
7 p- h! X+ O# V4 s. F
set-plot-y-range 0.0 ymax

$ x& H' J2 N4 R+ @1 pend
% }0 j! [7 d! h; b9 w( E% Q# S, R! Q3 m, D
to setup-plot2
, A: z  j- o3 S+ g% ~6 p  a
% r( ?6 X* v  d4 R$ Vset-current-plot "Trends-of-global-reputation"

  V; S! b$ d. \  H* i
; c  E4 @4 Q$ d) h/ z  Iset-plot-x-range 0 xmax

0 }$ O& y% _: Q, S+ M, g" G9 q1 t) a) d% f/ B
set-plot-y-range 0.0 ymax

8 E9 z8 Q0 s5 ^6 ]! u" M) yend8 L9 c" }" W  q; |) u2 p1 b1 L

, Y+ E; y/ P) |3 wto setup-plot36 i% `5 O$ J# d9 K7 m8 p3 \# O, V

1 j; t, m! G! a) v9 }2 Uset-current-plot "Trends-of-credibility"
* _) K8 ~6 h% {! l+ w
& L- ]6 {. c9 i! J9 ?
set-plot-x-range 0 xmax

4 k: N4 ]/ W5 j) C) H6 [0 m! \- z7 n/ a) J" `0 O$ g% R1 N# \
set-plot-y-range 0.0 ymax
  p( ^; A) `4 i: A& ?4 r
end
/ F1 O& {. b. ?3 ~! W7 M$ T4 W% I0 ]8 z1 P( Z0 g6 D
to do-plots
8 e" y' M! n$ X  `# sset-current-plot "Trends-of-Local-reputation"
2 s, z# h; k) Aset-current-plot-pen "Honest service"4 s8 Y% l7 ^: R& N# B+ u: j, `
end! X! s" `) K! e7 e; Q

- Q; v1 W, C6 Y( X# q[ 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.  J4 h& E# N/ s3 y( e5 `! F

4 m$ O2 K; D- O! O0 W$ U3 h! ~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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