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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:1 j* L, S" V9 L1 X' H: l, Y3 c
to do-business 5 }% U2 M3 \1 v& K
rt random 3602 a* s$ @0 U1 t
fd 1! y; e# W+ d( S$ t# F% G
ifelse(other turtles-here != nobody)[
& J9 [6 Y$ a# S/ m, @$ B2 S. v! |   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.
: z' K6 E* f: E* [   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" f: t8 v) R9 Z; i. i   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 H, t9 K  F# \8 @" J   set [trade-record-one-len] of self length [trade-record-one] of self/ S" g, x5 v8 s- h5 k/ i
   set trade-record-current( list (timer) (random money-upper-limit))9 K& ?5 x% j5 q; S+ e

# ^1 y+ B" L9 V0 j问题的提示如下:- ~' j7 w& N$ }- [  U
* `: M( l7 F( d  Y
error while turtle 50 running OF in procedure DO-BUSINESS2 ^8 {' E/ x  J5 g
  called by procedure GO1 d$ R* ]$ x- z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.5 ~- g1 X$ Y$ G! \) q* O) ^5 @
(halted running of go)
  v' h+ F+ C) l1 T9 x$ b, t) |( K; ?! S, J5 g1 Y$ T! w
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~~2 l3 o& w! G, T3 |  d4 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% ]" ^9 u2 c' `* A% I- \; T
globals[+ o- Z! G0 V6 ?1 Z3 a! ?
xmax( _/ A4 M; x& }
ymax2 E1 \# e/ V+ p' l6 x
global-reputation-list
" S% c/ ^$ B' I5 a0 J2 Z' }# s% k. h4 M
  W+ M% `+ u/ p0 r;;
每一个turtle的全局声誉都存在此LIST
$ I6 L( {* N: K- n/ Z: ~credibility-list$ }1 D% `0 c9 A1 w2 W  ^
;;
每一个turtle的评价可信度$ N3 V- U4 u' ?. m3 Q
honest-service7 v% f( o. Q" c/ x( O& m% w% w
unhonest-service8 i& \7 v# ?% ]5 ~0 n- u# Y
oscillation5 |- v/ e9 Y5 F& s7 u
rand-dynamic5 t7 l5 L7 N) M+ r; ~2 m- C  f
]
1 S- [3 F& E( y+ Y: G4 r0 r( C- i6 V7 \: ~* n8 x0 b6 I8 i/ p. ]
turtles-own[/ ?# X/ d* y4 U
trade-record-all( g0 S6 X2 R* E" ~
;;a list of lists,
trade-record-one组成
! b- ]+ Z0 D: R) s4 M$ r% @7 \& strade-record-one
+ q' k5 n. I1 d;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 t' k0 O1 [( Z0 M- }

2 B8 d: G( C2 j9 ]6 R  z# d' R* d;;[
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]]
# h* x" `. Y/ l" L% K1 R* ktrade-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]
5 R7 X7 K/ }- U; [- [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list
4 z# c( I% t' @7 zneighbor-total
5 N3 u2 a- a6 w6 K8 j3 Q;;
记录该turtle的邻居节点的数目! p+ W$ |  [  W
trade-time' v: }. \5 [- Q+ ]
;;
当前发生交易的turtle的交易时间
  h7 N8 a! D0 o8 ~5 x, W0 Uappraise-give
% N" i4 e- K2 g, U2 h; M( f( {;;
当前发生交易时给出的评价
. q3 [# f: J/ z( r' Xappraise-receive
- a, X# i* e0 E  Z* p! j;;
当前发生交易时收到的评价
2 z* ?. \& f- J6 ]  q, h% K( eappraise-time
* q+ y1 j5 C2 }! W* y; P4 _& h;;
当前发生交易时的评价时间( o8 l7 \( e  q9 K% V. ?
local-reputation-now;;此次交易后相对于对方turtle的局部声誉* N9 ^9 j2 ~' v5 t- x
trade-times-total
. W( j- ?& i6 J! |/ O. r5 a;;
与当前turtle的交易总次数. t/ A3 p, V4 \, R2 V/ ~
trade-money-total
5 S3 ~' Z+ y6 q- @. v: y, A& q;;
与当前turtle的交易总金额+ _6 C) n! M4 E- M& |% y5 j
local-reputation
4 d0 {$ ^# h- ?7 [0 `! K$ dglobal-reputation1 {3 b1 T6 e* v8 C4 p
credibility
: W# |" t7 O. L6 ~% t. G% @; s;;
评价可信度,每次交易后都需要更新
) y2 L/ q8 m3 b" Scredibility-all& x% O" _! @* y( K' F" v; t/ j! 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, O: I1 o) ]# x) g+ h
8 _& u. ?+ E9 A% y0 s* n- k
;;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0.51 x  Q6 ?; i) S9 l' J
credibility-one; J) [/ w9 X% C+ b8 E8 Y
;;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, r' `0 V6 n1 b1 ]. z$ dglobal-proportion
6 S* [( l+ M, `% _customer4 _9 i6 |( X1 v- G2 m6 o
customer-no. p1 A& L8 }2 F" J) ~1 L, w
trust-ok- R" J  ?0 ?- l+ v" T  ?$ B
trade-record-one-len;;trade-record-one的长度
5 m! a  m# |9 x- V$ \]
: z/ K/ N: F5 b3 z2 S3 k& |
" y0 K' k' K8 x4 O;;setup procedure
) ~$ s, M$ w2 ~- ^% O' B8 j/ m  {- {  P% ]. m* Q9 t, _/ K) c! p7 V6 N
to setup
. X5 T$ z! K" @2 k: s% o' L# M7 I* w& m+ ~
ca

6 h) y3 Q" C2 E7 T5 Y- j2 c5 x1 |, R
initialize-settings

* m2 C: s% J! M, Z0 _) ^" [: w7 F0 u6 H6 q6 t& n
crt people [setup-turtles]

* h- z+ `6 k7 i6 A/ l4 d6 J( \$ g. X. ]. {  T* G9 x$ e2 V0 o; ~7 P
reset-timer

# e  U) V- S0 i  y8 y6 T5 I' d
. x, M5 s! Z, e+ D' Q% Fpoll-class

; z. R) y" m2 Q) [# g1 p2 e2 |* F4 I+ b
setup-plots

0 t; }, o2 L2 K: C6 U6 H
1 h, ^' h; K+ cdo-plots
; [% h( W2 A9 ~4 ~# r
end
9 j, H! G  {/ S& B8 w. D$ v
8 u1 F4 c, B4 m6 J3 n8 Fto initialize-settings- v: V! ~: |- H' R3 j& R+ r
( g4 D8 q6 H2 |
set global-reputation-list []
6 @5 o% z$ B2 [* K

2 W6 z$ s. ?* m2 }# rset credibility-list n-values people [0.5]

7 F! T1 _- B' ?; j
0 T1 B7 \0 _0 V* J9 Uset honest-service 0
$ o& F9 W. s* q7 [/ Q3 ]. }$ X
" u8 [" n4 X$ b6 B
set unhonest-service 0

( N  f8 T, [  a+ Y; E+ d" s4 l, @2 g/ k: M- e" b
set oscillation 0

( Z2 s& Q7 _" c9 h5 R' x3 s* ~5 I6 o) E8 D, A! E( g. G4 U' a
set rand-dynamic 0
4 K+ c; g% Q% A$ C: T9 |
end
5 q, L" |6 f6 h7 G# b
7 U5 t$ i- U9 p; i3 t5 Z8 C  lto setup-turtles ! d  T2 N* O" G% U
set shape "person"" d$ y3 C/ _. p/ u5 [# J6 I
setxy random-xcor random-ycor  |0 ]  c" M/ U' x. Q# U& Y
set trade-record-one []  c# q0 i7 J+ M- @3 l
$ N& e+ ~) {5 k
set trade-record-all n-values people [(list (? + 1) 0 0)]
, q/ W% ]& @& J9 O

) H" \+ y: W% k6 M" F* ~+ wset trade-record-current []/ v! G, x+ z% a
set credibility-receive []
, x7 V8 b6 d9 o* lset local-reputation 0.59 z4 P/ p5 h# c/ ]1 g
set neighbor-total 0. A* T/ E! M) j+ D  M
set trade-times-total 0
. |: D9 m+ `: }. wset trade-money-total 0
- i" f/ l# D- O7 e! t% Q% Yset customer nobody
$ Y* \0 b' M/ Uset credibility-all n-values people [creat-credibility]0 M* W, W- y+ a1 t3 U, F6 l/ q
set credibility n-values people [-1]
/ ]  x0 P0 K+ `; V; O! `$ wget-color% p; L8 P0 Y0 W2 B3 o# S. D6 S
8 g3 S7 l+ J" z+ E" ?! ?
end
* X2 |  L3 ?& K% O' E& E9 B  Y0 `
& e3 H) F. v/ Q4 dto-report creat-credibility1 Q3 T$ r, l+ I( u+ G
report n-values people [0.5]) o$ G7 i" P  V: b
end
) q0 ^$ w$ G+ s, `# P8 l( r3 e/ C3 ~. R# J* h- z
to setup-plots
; P0 y, V0 M2 a7 X2 f
/ [* _5 r7 G/ Z. K* u) e% yset xmax 30
' i, ?% ?0 ]. [* \

' J9 n& T7 v$ M0 x/ \( W/ l4 N+ u6 mset ymax 1.0

2 ]7 [0 a8 B0 i  E9 E) S8 u+ I
: |, ]7 v& t- o* Zclear-all-plots

9 t/ S5 C0 r3 n: V: k' K3 D2 D" o" M0 S+ F  c- k3 J2 @! V) q
setup-plot1

! z& i" R( C' o9 d2 I  u, d; c
1 n$ v) G2 `8 |8 Zsetup-plot2
. O/ d, `9 N1 c& g

5 r' i$ W; h, G. C  r( Xsetup-plot3
( A. y; j$ G! o
end; C0 n& v  ]$ S5 }# j
3 I1 ~6 b8 ]. u5 @& ]( b7 Y9 c
;;run time procedures$ Q' B1 U- k6 D- H) D' I8 K
, P4 |! n: `  V* Q7 a3 K( z! V
to go
5 b  n, n9 M' [! M/ |3 g# c
: |9 z7 C! A% ^  k3 sask turtles [do-business]

! h2 Y' ?; i1 Nend5 J; @$ l, J* O. z- |
$ }" j% l$ \4 t. V
to do-business 9 c$ ]6 l3 j' R" h  ]- a) g$ `

! h8 m1 j( _& O. \+ w
) g1 `+ Q4 b& U$ [* [4 Prt random 360

  H  m) a; R( q) @' f; s) y
) I& y# _9 C* Z" ?0 ^: ]fd 1
( }3 w! F& y  H1 K6 @& W2 e
0 d" V$ U5 \2 \6 n0 o2 w
ifelse(other turtles-here != nobody)[
5 H( I& X5 K' T9 o' l/ U  N$ \

$ H1 ]3 V1 r" V* O2 B8 ?/ @set customer one-of other turtles-here

& n4 O3 O4 n/ W! n' W1 u/ e
% \6 L; R/ A: e! O# i;; set [customer] of customer myself

& e# M6 `" {+ C4 u( g! r  u3 Q9 J+ M$ D: R& `0 M" W
set [trade-record-one] of self item (([who] of customer) - 1)5 X' T8 U' c9 v6 N8 h
[trade-record-all]of self) }, X, T& [( L5 F( R9 j
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% E' K) h3 f, O
9 E$ y- v3 ?4 Eset [trade-record-one] of customer item (([who] of self) - 1)3 y0 ]4 b: Y6 W: `$ i1 G( G
[trade-record-all]of customer

- r  |* X! \; H2 l0 l' r$ t9 S
# I' n# d. ^! G( Yset [trade-record-one-len] of self length [trade-record-one] of self

5 z/ `# Z  D& x* w6 E  L# v
* A1 S7 [3 |/ l* k1 B9 I3 eset trade-record-current( list (timer) (random money-upper-limit))

3 r) y( @- n' q. u9 [+ c( J2 \. h# A) X& X  o- s8 l/ t
ask self [do-trust]
  w7 J5 K& U& z/ o: z9 s# R;;
先求ij的信任度
# t* F) ^) n% J& r4 R
3 L0 E6 E) W7 Mif ([trust-ok] of self)) u+ }- ~) C3 e# `6 \6 M
;;
根据ij的信任度来决定是否与j进行交易[
- a9 s) x9 L6 N3 ^0 @+ A& oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 d3 ]5 Q8 Z* }3 q/ ~5 K9 B

) I* W7 V, W( u[
, a6 d9 ~* a; m, V

* i* o: N$ h3 \7 q- f) |$ P5 ido-trade

5 o- n( Y4 ^. ?& N4 n0 K4 E& t4 ~8 C4 v# Z. @9 Q$ V
update-credibility-ijl
7 p5 b$ B/ b! k$ `# O9 K6 l
3 [" s* v1 L) ^
update-credibility-list
- x/ O1 a% k/ \9 F5 t
% j$ I) h' c. S" s; O7 p

; ~3 g' }5 A& E3 T, o% Mupdate-global-reputation-list

  e/ D2 ~  f7 {" H7 A6 o% ~
, d7 s9 q5 q! v. Y7 e8 u$ O9 Jpoll-class
# k9 p! Y9 q! S

% B+ A& p7 F! G3 t! H( Z- wget-color
) @( Y; u8 j3 E# Z! f$ B

) g9 O! p! {7 H" `1 j]]
9 Y4 b! |: f7 t: I5 Y7 \4 L6 A+ v% H
  e+ K) h6 k/ R;;
如果所得的信任度满足条件,则进行交易
: n3 f( d8 D' V/ Z9 U9 |. P& Y, x0 ~1 `0 v# c( Q8 L
[
* S& o) n4 {. m% [  w
: e8 M  i4 L/ r
rt random 360

+ W% |: y% D" _" F! {
" [% s. c  e. p$ ~/ Vfd 1

3 n5 m, @( \! g& E
. }5 v/ @3 w, A3 D0 f]

# W7 R4 P/ p9 Z& H
) \( J$ L9 X- e/ Uend
1 E$ l" U9 c# d" C( M  \
# b; Y' G/ P$ Z7 n4 E9 W7 Y+ T3 E
to do-trust
8 c/ T0 q" N; nset trust-ok False
0 T3 u. l! b8 [$ \. |3 L5 a
  k4 f, C  u- Z: X
5 L; y  k, o& E5 i; F
let max-trade-times 0+ L! S9 S0 V5 w5 [6 i+ g# C' {% P
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, L( {" C/ B# e' D* R, y" C) z1 `let max-trade-money 0
3 t2 x8 P4 [5 ?  C; V2 J7 j9 Rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 X# o, k" _4 rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))2 J+ e7 r# l, N

% ?4 x, n8 `0 w# @( P" l

  N. W& ?8 s- q, t7 l* |, ~& qget-global-proportion
3 C, i4 h" w. Plet trust-value0 v% P5 t5 V% n$ Q# Z$ I0 d
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)

# L8 r0 B  F& n+ Jif(trust-value > trade-trust-value)
/ u; O# l3 g4 @1 y9 W* f[set trust-ok true]
3 `1 e# q" w+ v9 I3 ]end
" {4 g8 Q& |; D. k0 m$ q  ^1 C( m
5 Q; F5 ?, u5 u. ]+ G; ^to get-global-proportion
4 v+ X, {0 X9 H) Mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, p$ s7 d2 @" L! c* z* V[set global-proportion 0]/ e2 R4 S  A" u
[let i 0
# H3 R: z: V6 C+ @& q; ulet sum-money 0
1 u# }8 A9 M6 m/ I4 nwhile[ i < people]. Z! L- r- ]0 g: ~! K% e3 \
[
0 v' C9 ]. Y* U* Gif( length (item i+ D1 K: P6 \; R
[trade-record-all] of customer) > 3 )
* f" ?/ t5 n& ~5 J  Z0 Z% w; V
[6 o% F' {7 f2 B4 o6 a5 j
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 p2 _% i! N6 W" u0 G3 p, w" v]6 z6 v* x7 Y* s/ c; h
]8 H6 z$ {1 f/ }$ `. U5 b( {  {
let j 0" p: _: \) O$ V* u  y/ f
let note 0
3 D9 ~4 @5 d/ s. xwhile[ j < people]( u* h8 m( f; O$ F! N8 b  r2 M$ G
[
# ?& z2 S9 T( L2 g4 wif( length (item i
7 E# \$ d: [" w% Y' @[trade-record-all] of customer) > 3 )

, T4 D6 c! [* ^[% N' v" C- y+ T$ L
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ F! d, S: U+ h" L  C+ t
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. Q# c5 u4 z! [/ B( [
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& E4 E" J- k3 W
]
, q. i1 V( B" Q- O% p4 `  F- o]
2 K0 ?6 a# k1 j  i2 m4 R$ ^9 p; s7 ^  tset global-proportion note5 q8 \6 q" Q4 ]0 ~
]
% Q( F5 h% W: [end3 O8 S* a! `3 M
5 j& h# M, `8 b. M- _
to do-trade
: I0 \) s5 r+ m; _+ B# I;;
这个过程实际上是给双方作出评价的过程
1 |; n( L4 Z+ a9 j6 {; D/ Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" W0 t' u: P% A% aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( |2 `: v! V9 V& k
set trade-record-current lput(timer) trade-record-current2 k9 v" i& z( K3 l( _
;;
评价时间: u* I, P  I4 ^. a! x- i3 y$ P
ask myself [  V: y6 z: s7 Q# V1 k7 |
update-local-reputation
* D4 V# h% N) c" D' Mset trade-record-current lput([local-reputation] of myself) trade-record-current
5 S& G; Q! C5 `5 f]
* G7 f6 y* m6 f# \set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 G# ?) v2 S* B" _& y;;
将此次交易的记录加入到trade-record-one
; M* Z2 E& _, Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! _* }" [2 E$ v7 }let note (item 2 trade-record-current )
% f0 o4 @, Y  w4 n+ _+ eset trade-record-current
0 m" W- \" D9 @/ s. k# L(replace-item 2 trade-record-current (item 3 trade-record-current))

$ y! U: I& t, h' h2 e. pset trade-record-current; C) u3 A) a! y0 J* m' N
(replace-item 3 trade-record-current note)
3 `) g- h; S# y" K: I
. y5 L/ c! Q  V1 ?: x6 O; h3 w! m
. f6 N9 H9 G; Y; X, [) N
ask customer [
. o6 ]3 V) K1 Jupdate-local-reputation
% @" Z/ {  F' Pset trade-record-current; J1 M5 `) Z5 {0 D( {) \2 V
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" M6 k8 r7 O7 U+ f$ o1 J  s- W]
: d6 B' P0 }$ y. H6 d
7 p) z+ O: r1 B6 E! e+ t9 Q
" e, a# \4 }6 D  F$ f: a/ b
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 \) h8 x/ ~) ?
: r* [; B- z/ k" b7 L. y; u
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! o' N' p- O* g7 z
;;
将此次交易的记录加入到customertrade-record-all
7 r% u( m  k  D! j' Iend! l0 w; i9 B1 c9 Z

. N% i1 J$ j% i# Nto update-local-reputation1 {* a/ |4 Q7 `, t* L- r
set [trade-record-one-len] of myself length [trade-record-one] of myself
. k7 @1 X9 j% o, U! g# L' I9 a# X8 M/ s( C- ]
) g0 L1 A  I/ _
;;if [trade-record-one-len] of myself > 3
% d& a5 a5 [  f/ S8 }% R
update-neighbor-total
% Y! \9 `' H* }. z& z( M;;
更新邻居节点的数目,在此进行: ^6 p2 I2 q, r# O$ y* Z
let i 38 R( ~; c- B4 O, |" N: V' z/ {
let sum-time 0" k0 F7 P. ~% z" j/ {, }( P' c7 ~
while[i < [trade-record-one-len] of myself]
+ @/ i) L6 T) r$ e% I9 r[
0 d/ P! K% c1 w$ \* L$ |set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 r/ a) m: |, k7 W' V: g# V
set i
( }/ U7 b9 u2 S2 i1 A$ n  u; e( i + 1)

0 y( \  N0 q! n0 F" l; O8 g  v3 Y]2 H1 l  H; Z5 R9 n1 A6 s0 H1 W
let j 34 x: q. y0 ]7 \0 b* L% W. S
let sum-money 0: i* _3 [: g+ R) Y0 R! j
while[j < [trade-record-one-len] of myself]" I& M* I4 x- f/ N
[
! _: A, S, N' Q/ H3 m* S; x  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)% f' T# O, D! p/ z
set j( C1 ^/ Y2 B) [* Z  F! ?8 E
( j + 1)
" R$ E4 U! H) O7 C
]& D2 U8 I2 P% m6 f% m7 p
let k 3; f: H4 o5 e+ K8 p+ |1 X
let power 0+ Q) W$ d3 R. @
let local 0
# F; Y, N3 |- h' |2 \  A/ g1 ywhile [k <[trade-record-one-len] of myself]
2 w" i4 o/ n, |5 V! K' Q9 C[
; b( V7 S4 e% f& C2 n4 t$ }set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) $ O  A8 I; X' f* W
set k (k + 1)$ e5 ^3 @! i9 A; }- w
]2 M2 G6 k3 V  l3 h* K
set [local-reputation] of myself (local)
% d" ^4 `$ B; `9 uend8 B- o/ y* A7 ]0 _4 }4 ]

7 d, x. V2 F+ N+ hto update-neighbor-total
: D- n4 k  G" N7 i# h- ^4 `
: T! _2 Q) i2 E+ n8 F+ j! e! \( Uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 C" E9 r( I+ W4 @& }0 l
( W+ M9 W- O9 U! K7 {- A
5 H  w: T' B6 [) ]2 o6 w$ g
end! M, c3 }9 X3 H: L! U8 Z( _4 f

5 S" }: Z7 g. L; f* u7 xto update-credibility-ijl
2 ~$ V2 T1 {7 g' O  M2 m; W7 W! a5 H/ w8 O# I
;;
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。% _- i: W9 H# ]# R3 q- a
let l 0
5 l$ {  D' f. H1 m7 F/ f- Mwhile[ l < people ]
% V6 t0 R" f( e, T- G;;
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' ?0 w% e; c- ^+ ?
[5 n4 w6 _) ]# d% {& {
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, c6 T  y2 H: x( R' n5 l- q7 Qif (trade-record-one-j-l-len > 3)( U! G3 j! }+ m7 c  m
[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
3 y' O& H2 _, u; @% X  E- P- p" E& Glet i 3
& A( E2 d0 H, Tlet sum-time 0
. k2 o& E+ t  U, mwhile[i < trade-record-one-len]
0 a2 ]" O7 e1 ]' x3 [[& [7 ?, m6 g0 b  b9 V
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 G" k9 I5 T3 [/ y! j* J
set i
+ V# k/ Q3 B" d8 n) T* C7 P( i + 1)
: c; L4 d9 t  H) r4 K  M
]
/ i5 Q; [. U# Z& x  hlet credibility-i-j-l 0
# t3 k: D6 a0 @% z) {* _# T5 D;;i
评价(jjl的评价)* m+ Y% C, T0 `/ O/ g
let j 3" u. b# m( A# o( I5 q+ ~! j
let k 4& J! K3 {1 l2 y$ j! e% V* U
while[j < trade-record-one-len]/ M) V% {+ f! M
[4 f$ E2 t) X$ m/ R
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
6 }& H) h( v) q! F. ^3 Tset 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)
% j: S$ R8 N1 lset j
* G" {) k6 H1 L5 _* j( j + 1)

* \  x& {1 c. N  V! n0 ?/ e  L/ l1 M]- V7 m9 @, X7 R( q) W, a6 {
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 ))/ H/ E9 z8 y# N

( Y- ^5 C/ T, h0 Z0 J: `

  h7 j0 `- @9 f, Glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 Y% p$ n. G6 B3 K* M;;
及时更新il的评价质量的评价& R- ]) w& w: t0 t
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 \) P3 [5 a( b% C3 n) d' I2 vset l (l + 1)
) ?0 f/ C) {+ z$ p+ R2 r! H]- g" A8 r8 }5 a: ]0 M
end
! V, ?, n2 \7 h; m- M; P3 R* Z+ I2 C  Y* q
to update-credibility-list
, \! \6 |2 E4 S0 V- P$ g  Nlet i 0- n+ {( X. s8 S  O7 a4 S, g
while[i < people]. E+ z  H$ _8 s) }7 F
[
9 i$ u/ g; |" ylet j 0
  B: ~# i7 R2 e* N4 ^- Olet note 03 f& @( p$ F4 n4 K
let k 0
* N3 v1 e) W$ }" P) s4 }7 F;;
计作出过评价的邻居节点的数目) h- y5 w& |( c" l
while[j < people]1 j& p$ Z. B4 X9 M1 h4 A4 O
[4 a' Z' s- z- U
if (item j( [credibility] of turtle (i + 1)) != -1)
' a6 ]3 |5 D  N, T4 E5 @, V7 m;;
判断是否给本turtle的评价质量做出过评价的节点# v4 e1 d1 S" y5 y& w
[set note (note + item j ([credibility]of turtle (i + 1)))
. u& U1 \$ J' _  L7 }0 O' u;;*(exp (-(people - 2)))/(people - 2))]

' p- d( u+ Z, H8 F$ Nset k (k + 1)
6 C+ T6 F# P$ x/ K& q% V2 V]
) E% t7 L+ w4 F# v9 {: Hset j (j + 1)
; g4 Z% M& G/ d+ {6 W5 [9 z]
# {$ q2 H  B* F, w) {5 v0 |set note (note *(exp (- (1 / k)))/ k)
' F. n0 I% Q5 T& U$ f1 b$ i3 s* H% k( Jset credibility-list (replace-item i credibility-list note)
" [# Z: }" @/ Z2 w' H/ Z# Z3 Bset i (i + 1)
* ^; Y0 ^% m7 I, y]9 K  ^2 \& L; V; l! p6 {
end$ c# C/ J: m4 W+ B8 f1 x

3 Z" O4 {4 R2 d# f3 Z; dto update-global-reputation-list, E, n7 v1 E! n4 A, K- A2 a
let j 0
' a) y3 f- \8 T% N8 P' g8 kwhile[j < people]
: l& N6 M4 D( s1 Y. H: D1 }8 i1 ^2 A[
$ a) I/ q$ w8 o1 G- `2 hlet new 0+ Q% |/ T, V& M/ p! u
;;
暂存新的一个全局声誉3 M) R9 h2 s: q, Z! B' s: _" N
let i 0
9 O# Y+ D0 m3 t' ulet sum-money 0' {# U' |  b6 ], n0 N+ s
let credibility-money 0
4 b& r" l( C; L: iwhile [i < people]% k# ]1 u% H0 ]+ G# O3 O
[# T/ H7 V0 j! y9 `
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 W5 |4 s" c7 `  c9 b- R
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ j! C7 K: g% V' ?3 n' J. n+ P& K
set i (i + 1)
" w% A' M' r# H' ~5 h0 y+ N+ `]
! x, w" g# w/ _9 wlet k 0
2 X6 U+ M' t( l) \6 rlet new1 09 t: G% y+ o8 ]7 Y
while [k < people]
1 S5 B8 ]# f' y- \. D[
& R! E5 J" s$ L+ U  Tset 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)9 R9 C. [5 p% ~# F5 Y5 O
set k (k + 1)8 f' o3 }+ f0 ~  k% v4 ^; x
]8 D! ]. R% ]; ^; B: h+ m
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 ]6 d: Z3 u5 xset global-reputation-list (replace-item j global-reputation-list new)% D( W: Q% n: j2 O7 t5 E& S
set j (j + 1)7 c* Q1 ?$ s0 n( e0 q
]: `# k9 v9 A' a3 B; [* A% T( J
end
8 C2 c3 w8 r# u# ^, S8 Q" E9 R! A- S6 `) W) ]# W5 d
6 x) e! Y' e! r) P: B8 w& O
0 l; T% `0 Y2 V+ p4 Q. Q
to get-color- x$ D1 Y& Q/ `: r. T# U$ A' p
, L) L# u8 h  Y3 o/ R" {
set color blue

# [1 U$ U$ a" `( ?" ^end
6 y+ L" C* \8 j6 {3 h0 l5 Y( H; S* Y: s
to poll-class5 B4 v9 A$ L/ h1 @5 G$ r$ \  |, S. m
end
9 u0 P  m# c& u" I+ f/ ~# P. f
4 E# f) r0 X; J1 Uto setup-plot1
' s8 e& A' F) `9 g0 A5 f7 }" a' z/ r, a" u0 T+ h; V
set-current-plot "Trends-of-Local-reputation"

. C& T, X7 q8 w' |8 _
% t3 i9 m4 X% V' T$ _9 Gset-plot-x-range 0 xmax

% {% n, z4 Q6 c. M8 T% e, E, s& _2 G
; d( Q; |* |; D+ |% \0 Lset-plot-y-range 0.0 ymax
" R- L4 X6 `5 F9 {4 E1 X
end6 x1 S) K" A0 n9 [# K9 V6 Q/ B
8 j  M! n* T+ B+ f% R8 q7 u
to setup-plot25 R2 l9 u8 H. j+ c6 Z' O. T2 D
# F3 u6 o, i& ?
set-current-plot "Trends-of-global-reputation"
+ H3 S9 ~! z3 Y: Z  L0 a  A

  w" x( z  C4 r4 D- `8 Jset-plot-x-range 0 xmax
4 f, D( ^! J+ ?! u) F" f& W

& q. V, M% `  ^set-plot-y-range 0.0 ymax
) y" t2 y- c0 }" b6 ~' c& z2 j! U' u/ s
end
) A" O' @0 e' k6 A; J% P" a$ K$ ~
6 z# E, f. d2 o. k+ N0 e9 s# Cto setup-plot3
6 z! h( W( u9 {# N, X$ Z/ L) T" T* q, z( [6 w, N0 w3 k
set-current-plot "Trends-of-credibility"

; k, z/ |3 a& Q' I/ ^: W) k3 S" w& K0 E, k; x
set-plot-x-range 0 xmax

5 S" M% X1 q3 X. D
6 q8 v& e; ]( [0 E0 F! hset-plot-y-range 0.0 ymax
8 m" S9 r3 q+ q- l( q3 F
end, l) A" p* t$ h6 ?6 y
: u; g9 o4 o1 k& _" x) X" e$ M
to do-plots
; R% a) p+ C% |; ?* M. D9 u  d' P* tset-current-plot "Trends-of-Local-reputation"
% ~9 ]$ Q! f9 q6 p/ g" J4 h8 Oset-current-plot-pen "Honest service"
9 |1 |- v) I  {3 [- ~* iend9 ]' L4 m* b5 Z2 G! v( T

9 v+ d. y/ \. q& E" 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.
- D4 ]# ^- M6 z! S  S
" v6 ^+ K  s' T  G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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