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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:
3 Y$ i, S* f  ?5 r+ c' G! bto do-business * J6 C% g9 l: {3 U5 r, Y  D, w
rt random 360- [: a1 f1 D9 w5 s# Z
fd 10 A6 w! w6 L; {1 z8 U8 O- H$ @
ifelse(other turtles-here != nobody)[) h$ n! U& U  r; r/ k% v0 _' 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.
1 M( A; w0 _2 r; R/ E; ^2 h" [   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    / W7 W& y$ v) r& y3 e
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ a+ Y+ ?' u) A: w
   set [trade-record-one-len] of self length [trade-record-one] of self
' D& c: q, S% P9 y! ^   set trade-record-current( list (timer) (random money-upper-limit))
! c$ R, Z" Q; G" y. {
0 I! }" G, a7 i2 N8 |  b# N问题的提示如下:
8 x6 a  _6 d* Q3 E+ d
) R- _6 Y' }$ z- G+ ?5 p" zerror while turtle 50 running OF in procedure DO-BUSINESS- T4 c; E; Q+ b& ^
  called by procedure GO% n  O# ?7 t) |0 k5 t. U
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* H5 U" g, H# {1 N5 i
(halted running of go)* }' X8 t8 S  |

0 x2 e( z1 `3 b9 [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! ?/ C/ u  ]; s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" q8 n- r, z% s/ y4 e4 a. s
globals[: c; T& P( f% a4 S! i
xmax
3 y9 h- I2 X. Y+ Y* G% ~" dymax9 I& Z  v+ A6 E9 E' r( @8 s2 F
global-reputation-list
' b4 z+ f2 P8 c" L0 i* U+ ^% X* v$ T% F' o- e& y
;;
每一个turtle的全局声誉都存在此LIST
2 A/ P( d% s, E# pcredibility-list: y# i& i6 e0 w' d
;;
每一个turtle的评价可信度
& a. Y) o* ^; Qhonest-service$ c) \0 p3 _% p0 Y2 {2 ~  \
unhonest-service) h* l$ I) P: B( L5 ?- R9 |
oscillation5 f4 M9 u$ g9 b/ r1 z- c9 P
rand-dynamic: x+ [' c: J6 I# e2 I9 C
]
1 ]3 y/ h$ W$ Y. W3 y5 y' R7 b7 f6 W, ]/ `4 M4 k( B  u# T
turtles-own[
  V$ y$ b. g/ B/ Strade-record-all
7 j* _2 l: v0 ?( i;;a list of lists,
trade-record-one组成
' _3 f; [, h5 D; ~" rtrade-record-one
; {' O$ E/ q) X( }1 g5 m  k;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 s# o9 p8 X3 p( a. s# D

& H9 T8 l; W: X3 G;;[
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]]
  D: s9 c; e. u/ j: 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]
, _$ I8 J8 U; q1 Lcredibility-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
2 X2 U: t  u9 u. a0 a, K8 C4 Eneighbor-total
7 f# T* |  C8 K& o4 N;;
记录该turtle的邻居节点的数目/ d/ G+ v  J4 v% ]3 d& l
trade-time
8 \0 t( u3 Y* k4 V+ P( K8 ^;;
当前发生交易的turtle的交易时间
0 ?0 n9 L. ~6 _9 M3 f1 @5 o- kappraise-give! G7 e: |# i+ ^4 U- x( f
;;
当前发生交易时给出的评价
' z" |: y' l  b4 D" {1 P0 S9 a# Uappraise-receive
: t8 p0 T9 }+ S& r, s& ^;;
当前发生交易时收到的评价
  G, ?) V. {* ^9 ]6 P: u+ S7 j; uappraise-time7 }5 A* `% r7 H; n0 J
;;
当前发生交易时的评价时间
7 V6 y- R& X* ?8 J9 Klocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 e3 X& v9 b: A9 k$ R2 Qtrade-times-total
: ^8 B: a% }* g4 S* @+ X) \9 U8 [! R$ a;;
与当前turtle的交易总次数3 G$ y4 J$ M2 t* m4 s/ G$ l
trade-money-total' O3 }: K  X! Q. e
;;
与当前turtle的交易总金额
) D- A/ U; c2 d0 T4 x* mlocal-reputation
0 q8 z4 T& g& j6 D1 e! Yglobal-reputation* u9 C. P/ e: W, z5 d, u3 \) ]
credibility
+ O- j5 O( J# ]$ L( A4 w;;
评价可信度,每次交易后都需要更新
4 L! O! p; w7 X2 }, ocredibility-all
9 n- E) `3 _# c6 h;;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
& K* C) g) ]  e# ?$ I+ ^# Q( U6 [# u
2 R( x5 |' n3 U* }" {( r8 @5 z;;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$ L; X( v- H- i' w& Q0 }
credibility-one( j/ a9 T2 P! c
;;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! }. }/ L# _' C' _" j
global-proportion
5 s% l6 q' |& {% f$ Qcustomer
8 t. R! H3 k+ T5 t* }% k+ Wcustomer-no
2 i  y! O2 r* k/ y" [5 E( w5 ltrust-ok0 \9 B! u2 D' M- G
trade-record-one-len;;trade-record-one的长度
8 Z% G9 e* {- b]6 }/ v. m7 }: ~0 D" E* \
7 m8 Z; a' X, [" P: K
;;setup procedure
. I/ [$ C! s) [# o9 r: x: N- f$ n1 U% g  F1 u
to setup2 z% e3 _# w3 T3 h
2 ~) W/ q9 Q' x! T
ca

6 x2 L- a4 o2 G0 R% m& ^" m, S' ~) Q$ k" u& r
initialize-settings

, \+ ~; I% Y( e! ^. A9 ^" [/ b1 m% q1 j' T4 b
crt people [setup-turtles]
8 ^4 G# F# ~- S4 u1 D) R

3 N/ L, i% _: o& d3 E; ~* dreset-timer

& P2 a1 \& ^) u3 d' z/ f( G9 H3 ?3 q& C3 ]) ^" `
poll-class

' M7 C+ l0 o$ _' i* ~& x: Z8 l* [  T9 N8 q% g
setup-plots

+ S; e- Z8 H. \1 c3 L" @
( i" [3 v0 V* R+ ?( l6 wdo-plots

2 t5 U& r% v( a1 d( q' `5 x1 hend1 h" @( u5 A1 {# x; \- m

9 Y4 E3 O( d- y( K( \8 vto initialize-settings! {* v4 e/ }+ ?) c9 o- a2 y+ |8 E; T. S

- I6 w2 g) g# @1 J. Hset global-reputation-list []
, |/ L- Q5 l. W+ ?7 |1 z
+ A% F1 y% ]1 J# f) U0 Y8 \
set credibility-list n-values people [0.5]

2 s$ p* a4 Q0 ?. t6 z) K( P, \: d3 _) p" S
set honest-service 0

2 I& q  N6 I& o8 H/ O6 x; y# @
+ Y- [! a9 C  J; g" V7 p% j2 J5 A- rset unhonest-service 0

& w! M+ d- X* X! L9 }6 T  v! [+ X7 l/ M- k8 }7 A* P
set oscillation 0
$ ~) @: H4 U- T$ B. j8 v

' ?- H: A. D8 a% x0 Gset rand-dynamic 0

  i1 \, X- ~+ |end( X( a8 g  T" \  H" B5 [
( G0 B% J8 x: f
to setup-turtles
) z  j' E) _+ N6 d' u  mset shape "person"
% f. h: a, ~" u( D, X; vsetxy random-xcor random-ycor% \8 a8 ]  q. Q) b$ e% |
set trade-record-one []% K6 o/ m! Q- b1 Z3 P

+ e3 a; P' I3 yset trade-record-all n-values people [(list (? + 1) 0 0)] 5 A0 l6 T- l! S1 [* x" O; r

4 I) L& y9 f# o/ k* Tset trade-record-current []: b4 K8 x( x, W3 M  e6 Q- _
set credibility-receive []
( C$ }* S) Y5 F1 s, A( Tset local-reputation 0.5
6 {- b9 X6 v  i- Wset neighbor-total 0
' ]6 Q) I8 l! g' E4 kset trade-times-total 05 b' f, }! `6 H  _3 N
set trade-money-total 06 e, _. z( y; N# l, c6 V
set customer nobody! \+ M3 n, T" A  ?( L
set credibility-all n-values people [creat-credibility]
6 ^  L# T, T- V( ]( [set credibility n-values people [-1]
9 K# S+ C2 d( S) ~, n4 ^( Kget-color, I+ A) z4 _4 H: H
2 @0 I9 T2 ^" s. k2 V7 G
end
3 l$ A3 P8 ^/ C$ s+ d& s) e! J" V: ~. v' y9 q2 v( t
to-report creat-credibility# o  e# K+ k# ?. W% ?" I" a
report n-values people [0.5]
4 C8 L! P  d* Y! s6 }6 Z8 |" i* kend* f* m' S$ Y2 h. E; U) K
3 a; i" I4 o2 \+ m
to setup-plots" p. Z) k9 ]3 n; }

. ~0 d9 x7 @3 D/ o' [+ H! Y+ Xset xmax 30

/ @; [% @) L$ b5 F% d: i* P% f+ c: ]) q# |: h
set ymax 1.0
& r: Q; T# V8 q2 I

' f  P- `1 W; \' x+ tclear-all-plots

3 i7 m) f/ \3 b% S' Q1 u% E: k( K4 T% T8 w: u; i- l
setup-plot1
, J  P, x! K8 g3 {5 o

6 P: F( \! o8 O& O8 A# \/ Msetup-plot2

# m6 r: O4 o$ @* A
) _, J) a7 Y4 |, T' e7 k2 Lsetup-plot3

+ X8 `/ X7 a# ^* k: Kend. K% [+ d/ T7 K/ \# l8 z

% U' s8 |; a# R- };;run time procedures0 J8 F/ j6 G/ `

# I: t: R4 d# Rto go$ o. E8 t1 w9 h  B* U
7 c/ m( ~) _3 c  L- o2 k
ask turtles [do-business]
; J1 \6 G" m2 ]2 ]8 W4 r
end
1 z( l1 F$ n5 u. j+ Y
) G6 a, N# e, z5 Ato do-business 0 y# D# s* S, l9 B2 N' q7 @0 \

* V' M! {8 x" d: X3 C* E
( q6 m6 A- A2 E) y* \  X' }+ a/ ~& i2 wrt random 360

6 A. A& Y7 o6 I0 b0 U8 A" ~& H' F+ l+ V* P% e4 g* \# e; W1 K
fd 1

( a0 w- ^8 [- c' G9 }  |, m) k5 m0 {8 L$ n: f
ifelse(other turtles-here != nobody)[

! Q3 @* L2 F$ A' A! {
% `2 y- [5 ?& R* X' uset customer one-of other turtles-here

, k" _2 q; d/ \. @0 j, R/ _& b
* q. n# h0 c7 C; j, i5 R' ~6 R;; set [customer] of customer myself
" d/ E/ s/ Z: N& n+ K

4 V- v1 R7 K1 I+ E" d: K! d' q& mset [trade-record-one] of self item (([who] of customer) - 1). n- B; k. d4 k* I. f+ |
[trade-record-all]of self( {! Y  Z! L6 _8 ~3 h
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; e/ Z% D! I, c

/ l3 y+ M* E7 hset [trade-record-one] of customer item (([who] of self) - 1)
, @& c; O) h" o& w[trade-record-all]of customer
4 U2 M- d: M' |: H+ N
' X: a$ r$ }% R: A# [
set [trade-record-one-len] of self length [trade-record-one] of self
' Z& l, Y6 m9 A5 Q
% }3 |+ `, j/ t: g1 W% T" J
set trade-record-current( list (timer) (random money-upper-limit))

& }2 Y' o0 R: U; Z! z/ [
) }* D! q: p- `ask self [do-trust]
5 F) Z. u" A) l;;
先求ij的信任度3 p4 g- g0 R2 A& G% O1 {0 X; @
  x5 Y5 s. r" b
if ([trust-ok] of self)
2 d, d" M* |" |$ v+ m;;
根据ij的信任度来决定是否与j进行交易[) [* ~* `' P& B$ {' X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 d. U* C3 Q6 B: U* h

4 V, D7 j  C* P- ^6 p/ V[
7 ^& h4 ]' z2 L0 d  S- N) L* l+ G% a

3 ^0 j  A% h5 y/ Z. F3 y" g$ `do-trade
: m5 n" ^9 Y" K) L- U# g

& e: k2 P, s  Q, o3 X/ E4 b) C; c; q1 \update-credibility-ijl
! l- e! X; u7 j& [# \4 b
# k  z! ?$ y) S3 v6 {$ l: ?) o
update-credibility-list
! I0 t8 P: Y5 B, ~8 N

: W6 j; \1 G* n5 V- y) x
  q7 T6 ?( z  fupdate-global-reputation-list
# u5 ]% T$ p& Y
4 {3 t+ ~( A, K: U" K: w
poll-class
, x& q) l7 f" o4 a5 d2 {5 ~

; k( w* x( I. y7 X. ~) j, Nget-color

( t- w0 J2 A8 Z, [, E9 f  w. a  z" V
]]$ B, H7 |2 x, [) Y5 C
  _" R1 u2 I- @2 J" b6 H
;;
如果所得的信任度满足条件,则进行交易
( ^4 l6 i+ x$ \  v1 ^+ ~/ |. |" W6 X# ?1 x. c1 ~5 @$ ~+ Y, b
[
8 {9 C7 H, p# d) d! |

; }/ N6 }/ B  Z5 Q+ }2 a. Ort random 360
- [! J1 e$ N" ?! T2 Q

0 D, j& n" a- ]" S  J/ U6 mfd 1

$ D: z$ F, e- @/ Z" ~0 r/ }
/ O4 k7 c4 F/ |- R. I]

# {9 O8 D, j' D  [3 \( \8 l: r! N+ v' e2 A1 n/ t5 c* `: G
end
1 G' t  m3 O8 @3 [$ C

2 g8 x3 f  m2 S. h3 oto do-trust
) T! j  Q* ]* n; Q4 t* M5 |set trust-ok False* H2 b3 Y* P5 {; t# S* L
$ @8 Q+ Z. Z- O' I6 s0 k
% `8 t1 x  B" b
let max-trade-times 08 I9 ~! u1 [4 U6 Z# H
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 s: [6 f$ r' @  P) w6 Mlet max-trade-money 0
% d3 c0 @. Q9 O6 rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 x9 F! q$ R% m/ @- w! Q' G
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 K' l  j7 M. z$ ?6 o  X3 ^: p2 r2 L. ]* {& P  l
  q9 I$ r2 k1 B" c7 Q
get-global-proportion. J: m$ \5 s  L3 z, l
let trust-value
7 Q. d1 C9 a5 ^: ]2 ?3 A8 B$ jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

: \7 K1 f& m) V& ^! f$ eif(trust-value > trade-trust-value)
% Q" w$ T: t- X4 S  e0 e[set trust-ok true]) a9 m; F. [* R, \* k8 t
end0 m, }; R2 Q+ ~
7 k. h; ~9 H" _, O$ U  {+ L
to get-global-proportion
- `8 M* r" ~7 J' I* W% [' i! pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 t9 C# z+ i$ V
[set global-proportion 0]* ^0 E' q0 d$ x2 Y4 ?3 @
[let i 0" F2 I) o* p2 E$ R
let sum-money 0& D, L* f* D2 |+ p' U" k6 w
while[ i < people]
  U& x- z3 ^1 i# t& T! ^[6 s) @7 U" a5 \5 c. k
if( length (item i& R- G1 A, q9 Z' N: n
[trade-record-all] of customer) > 3 )

* n, ]5 |7 Z) M. A! j[1 ?; E' O4 v0 _/ P% _$ `6 ^
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))1 v9 h5 h1 m" n( o& t: R2 J
]) G/ i3 s4 D& h, D
]
4 x4 w9 i$ E' k; u1 ?& h& y% Z( a/ Ulet j 0
# E/ [( e! M& R. o' Vlet note 0  Z  |! G6 {' e0 C" ~% D7 ^2 [
while[ j < people]2 U# }6 H6 A0 f" q3 O) K/ M
[
* I) u% B% k& k9 r8 Z/ iif( length (item i' S9 ^+ r. \8 Y; r
[trade-record-all] of customer) > 3 )
  z9 K" z4 S% H! p) L% G
[
- t7 w$ s  }* t( x* v& Kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), ^& j  z! ^8 V' B  U6 L
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 ^" g, p5 @. _6 h2 o: X[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 F5 X, L1 K: @]1 Q6 O7 @" W3 M/ J* B
]1 w" L; I0 Q) `4 f0 P( z+ Y
set global-proportion note
& b& \4 r+ ?! i6 k]- y7 a, ^, C( d5 Z
end" f+ K/ q0 @$ [) X7 r3 |4 K" C1 G

. b& t7 F+ o# b. U. H0 P  L; Q4 Lto do-trade
8 j, s- j0 j/ c;;
这个过程实际上是给双方作出评价的过程. V/ w& ?/ G3 L/ e, C* i' k5 z, e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; k+ X* T; Q, r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) x) J: ]/ W' N. y1 ^* b
set trade-record-current lput(timer) trade-record-current
4 @  M, u/ u* e  x;;
评价时间
$ u7 i6 G. a2 w- S5 Vask myself [
) e9 D: O; [7 T/ V- Dupdate-local-reputation) w% b  N. i3 X) V- U; x
set trade-record-current lput([local-reputation] of myself) trade-record-current
. U% g! O, t, Q7 D4 B' U% R( e; O]3 s' [  E) ?& i) K8 |! T) [
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ f/ [+ @8 ~3 z7 a4 p+ p;;
将此次交易的记录加入到trade-record-one5 c. y3 c- B6 Z  S1 d/ m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 y! p/ S  C1 f5 ^5 D0 |0 o9 s
let note (item 2 trade-record-current )
( P/ K2 d0 N; [4 G4 B1 Dset trade-record-current" i' E4 L# L8 w2 G
(replace-item 2 trade-record-current (item 3 trade-record-current))

! j: o/ B/ f' G3 }. hset trade-record-current  v6 ^3 s& X; m3 E- `! o9 a! c
(replace-item 3 trade-record-current note)4 n+ H  Q% B3 q

5 E* x( y+ p5 d3 l' r
/ p0 {! O0 U) ]/ a5 |0 I
ask customer [, g( e" e% \$ \' ~/ i. R2 L
update-local-reputation
& X; p( u! t/ |: [" I/ |" i. Iset trade-record-current: k# F  O( r' Q: p
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% E, @8 D" i% m  A) n+ v( G1 [* `]9 K7 G# I) P- k! {5 T. Q
) d( N& f+ @3 [) y, J  q; x' m2 p: \! s
5 Y+ T  s8 ~4 [: N/ F4 w
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 m1 {0 V- ]8 C  Q

1 @; e( P1 \: _3 q& c8 Q' ~set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 }" w6 g% d! G2 i% m;;
将此次交易的记录加入到customertrade-record-all
. a( i& v0 S& J0 A+ N& Uend
3 U& V) |7 S7 b# R; e5 i  K! o& k6 W8 _& V: k/ K8 l( y
to update-local-reputation5 U" z! F' c6 @
set [trade-record-one-len] of myself length [trade-record-one] of myself: E8 ]/ p4 {; g" h' A

) R$ M3 r! @% \( W: D' b$ h: Y- e; Z& d5 S9 V
;;if [trade-record-one-len] of myself > 3
4 p) t4 V2 `5 a2 c& x
update-neighbor-total: i6 H1 C4 h' [  H
;;
更新邻居节点的数目,在此进行
% N) O* H+ U: J2 F% ~let i 3
0 m; K9 P7 M0 }2 J( P/ C* alet sum-time 0
' q3 D; c3 \9 c4 F6 p4 e) Bwhile[i < [trade-record-one-len] of myself]
8 Z5 w4 a/ i' j# D7 R$ q2 ~6 V+ |, D[' b: y( d3 ?6 H5 ]
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 L' P5 O) ]& ]$ ~; Aset i
; [& H4 J( A8 N4 |4 h( i + 1)
3 C) s$ v& Z+ c$ Z: `$ s
]6 C5 n: I& [$ ?) H8 p- w
let j 3
& i; w' b9 c% }9 blet sum-money 00 V$ B5 C, b( T$ p1 L, F
while[j < [trade-record-one-len] of myself]. @7 u; d$ b; Q+ ]0 v  i7 F7 E
[# }  D' x' H: F5 r$ o, s1 D
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)
! ?7 ~* A' D. B: Vset j/ I6 X0 }9 u# f: _5 C+ U2 T
( j + 1)

, l! C3 Y# [- Z7 [) ]$ z6 H]
7 H5 {! p: L& z! J% ?2 \let k 3
" s' c6 k) P4 H) Tlet power 0' v. i8 c! L5 T# o" j  R! M3 {4 ^
let local 0
% b, G9 k( l0 J3 B( Pwhile [k <[trade-record-one-len] of myself]
  C: Y- W  i0 y( ~6 p4 E[
6 \* }0 c8 T; V9 Dset 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)
8 Z. |  u9 t5 N" dset k (k + 1)
# n; `2 l4 Z( u! t5 [1 b) a]: [5 E9 |5 X6 w. \
set [local-reputation] of myself (local)
8 D+ {6 [- C; x+ Wend
: b/ W5 L' F1 Y* j( @9 a! s8 N4 V! e1 v9 t
to update-neighbor-total
# D) a4 j5 j, b! I; Q
7 {  c  O0 E( j. ]if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 T8 ~( e5 g: g4 U9 i
& b( j" A( D% S+ K3 l, W7 R6 j
9 x! b9 D0 t! F; T3 O
end
2 Z# g) I$ |4 w% `" X
6 @! ]' H3 j7 x9 `5 Dto update-credibility-ijl
- y8 ?$ N% o& {, Z7 q/ Z2 ^2 s/ K
;;
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。3 N; H7 a  W. a+ e: M% P
let l 0
0 l& h: [9 {, j5 C' I" E- \; Qwhile[ l < people ]
* k" c) C4 P, }. P) 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
" q1 _; W5 d1 z+ A[, A5 a  @& z) D1 k3 w
let trade-record-one-j-l-len length item l ([trade-record-all] of customer). u* v6 `# T0 n! G. w/ L, {$ N9 {
if (trade-record-one-j-l-len > 3)
# m6 t: D8 ~% Q3 f- i# _[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-one6 v; l! p9 v( C8 b' I
let i 3
. Y5 n3 k+ h  x* o, Wlet sum-time 0
' _/ u2 {) w% g1 m# G$ L( O! L  F& Fwhile[i < trade-record-one-len]
; M5 L: X) W& [1 r+ J0 g$ r[3 i6 y; v2 m, I+ C8 I
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* v/ V; A( H' Mset i
9 o6 z$ G* v5 ?5 O  X( i + 1)
1 a/ }) m  S  L
]8 q: Y2 _) h9 {7 t4 P3 k
let credibility-i-j-l 0
7 C0 O7 I& H3 l5 P0 l8 t. O;;i
评价(jjl的评价)
) |, }) U+ l1 elet j 3+ X2 l/ W8 V# z; ?* y. |/ J
let k 4
; h" R( |, ~8 G# L& I5 _while[j < trade-record-one-len]4 L5 s  e, }9 P% I+ ?9 z8 C
[9 R) r9 Z* L5 w' d/ g1 p
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
- {1 i/ n0 H/ D. a: Iset 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)
+ l9 m* `! v: J" _6 \% m# Aset j
9 e  W9 j" R0 \4 A) w$ R- t( j + 1)

- {! b; s9 D  p- i& R% z6 q, j4 c]
7 Z0 z% V9 d3 o6 i5 L' ]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 ))" F) C$ k# w1 L! K8 @8 w% t- j
/ }* S! `1 ]8 }* K5 M) l
5 ~. Z$ G- S: G3 ~
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
1 r) \( p( A) K3 w! J0 K3 h4 B1 p;;
及时更新il的评价质量的评价
7 n' d5 z0 j& k; D) _set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; g8 f" b8 ?. Y. e# _set l (l + 1); D7 k) d, d& L$ `
]4 q1 f+ w! W, Y1 J& s
end
) _! ~/ B* Z4 e# i9 g) H+ f. e7 `7 P* @! v7 k2 Y
to update-credibility-list6 ^5 r2 Q1 r0 f
let i 0
! U; W6 M( h. I* ]( F  Vwhile[i < people]
8 D; H! V. s5 R[/ @0 L" d+ q- v3 x$ a
let j 0/ n+ z+ s2 k' U( P+ S% \) R  x
let note 0. S  E5 O) {1 F; f
let k 0
: T: o& L( q" h" |' E  ];;
计作出过评价的邻居节点的数目
, H2 O) P+ b; d2 ]" r2 @while[j < people]
! p/ l* J6 s4 s[
8 B% x( `" T8 ^/ X+ c% O3 v# iif (item j( [credibility] of turtle (i + 1)) != -1), H$ @) O8 O8 S/ H& Z6 j5 U# K# d  J
;;
判断是否给本turtle的评价质量做出过评价的节点
5 S$ Q- s% ~2 a9 n/ Z[set note (note + item j ([credibility]of turtle (i + 1)))) M7 T$ n+ h- b3 |3 I9 m1 e4 o
;;*(exp (-(people - 2)))/(people - 2))]
, ]$ Y  u% H4 r; x# K
set k (k + 1)0 q$ D$ [: e) Z8 [( x, Z
]3 j5 ]0 O1 d, G7 k& s# L9 N1 r' L" f. G
set j (j + 1)
0 @$ F6 |9 D6 k0 O$ c3 n0 v5 x]
$ n  r, }6 @" M% r1 [set note (note *(exp (- (1 / k)))/ k)
  n9 K2 J  U  M4 K  c3 k% uset credibility-list (replace-item i credibility-list note)6 Q) c' A  B. C: M
set i (i + 1)
- |/ p5 O, }2 I1 L]5 U5 B# R$ D; _; \5 ~% p; }
end! }! h: y! U- M( W
; n& b% c# `) m
to update-global-reputation-list
* }3 R7 S7 N+ h& o' Mlet j 0
/ w& h* t* F4 h) K5 P0 ~& Awhile[j < people]8 |: W: F- r( C4 V* u4 a1 B# ?
[
8 O- [$ L8 Z5 ^7 {  Wlet new 0$ z, x$ s$ Y; y3 O: r
;;
暂存新的一个全局声誉8 E3 ~: z  {3 _% _2 g& Y6 m- T4 \
let i 00 u) S% v1 o% O3 g0 b2 h- ]7 b
let sum-money 0
! M: R; j" [( E- O: K3 J8 Olet credibility-money 0$ [/ d# P8 U4 Y- b" v
while [i < people]
- F5 S! F1 s( q$ E, J[
0 s$ U2 [; u6 Z7 `; b  h3 s/ Uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( @2 \. j" d3 [8 @. h3 R  V! kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) J' _2 B' y8 q6 i3 s" f- L
set i (i + 1)
% E* U& h1 C) j, V]
/ p1 P: U8 B* N. u8 Z; _* b& R( Blet k 0
; F) F& k  a! o* J4 @, ?5 Xlet new1 0/ q5 D8 z' n. C8 t
while [k < people]
) O* X0 q, H* s( m0 A2 k[, u7 i7 [  A- Q' n* p8 @0 Y6 O
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)/ @. d# j5 d0 {. s1 F) J3 [8 T5 N* u
set k (k + 1)& {! p0 `. w# \  O
]
+ F. z3 m. U: y- Q; iset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 K% j# _9 l0 R, [+ ~4 g
set global-reputation-list (replace-item j global-reputation-list new)
/ e1 }' s9 E4 h  X7 ~set j (j + 1)$ \2 E& u5 d' j3 `( ~% u1 D' c- d
]$ k& p4 [2 `9 ^. K& l
end& E2 k5 D8 V. |3 N8 d
* z, O( [7 t) q& q8 K& ?  a
, Z( ^8 \) j& Z4 f/ ?( D

0 ^* u" b* r! d. s  Fto get-color
; S1 I7 b7 Y6 o5 d( S. N9 D0 D9 B/ A+ s% ^
set color blue
; G9 a% r- T' {3 t: d$ `, P. l
end! S7 x7 S2 y5 ?* t
+ q7 Y! V; z5 Z0 t8 w8 C
to poll-class' J* m8 P6 U( P+ c) j1 ?5 i+ ]
end2 F9 p7 s) X1 `' o- C
( s7 I# P; V: K. h- m
to setup-plot1) Y" l+ X- ]& G/ y$ C5 H# G

* ]5 H# _& w: T2 Pset-current-plot "Trends-of-Local-reputation"
% r5 I8 ?( Q; @" }7 }  I; v

' M4 B. e$ I$ J+ rset-plot-x-range 0 xmax
8 L% Y6 X/ }6 o! x# g& t

5 N) N, H3 o( ]4 c- D! r/ L. ~" u% Gset-plot-y-range 0.0 ymax
& P+ i1 O( I& e) T5 l" V, G/ b
end
% s' y/ d2 [6 l0 c( V5 B8 U$ v6 D) c
to setup-plot2
+ {# a" K2 v/ w& }( |8 l  [3 ~: Q0 o% ^7 |# O! d
set-current-plot "Trends-of-global-reputation"
$ w( G& k" N6 ]+ b& G5 g
7 i. ~* M: K( r) l: [! k2 R- ?
set-plot-x-range 0 xmax
: S. j0 O' m/ Q

3 g! J, ?& m4 C! V% A4 v% U; L2 S/ w9 Q9 ~set-plot-y-range 0.0 ymax
% i! j% D' P8 o3 {5 z
end
4 y3 W4 w1 R& M9 @5 n
" n/ _: ?7 E% G! b4 b* bto setup-plot3
( X9 r  o* u5 Q: s" P9 m6 R2 b* K: a& h( b8 Z. k! [9 o
set-current-plot "Trends-of-credibility"
! d6 v, L( g1 y; s1 U$ B

/ E: k: C: H$ ?8 aset-plot-x-range 0 xmax

; [  z( F) F$ t4 Z1 R
# R% L. M1 N. l  X$ Dset-plot-y-range 0.0 ymax
: w: L) U4 s3 R  y; b
end
# Q5 q1 c1 b1 }& {, B( l& E5 l8 {7 G0 c2 ?; y; {% D1 E  X, o2 O
to do-plots
& E' h0 y2 I' K4 A' vset-current-plot "Trends-of-Local-reputation"
6 A  \- I/ c- wset-current-plot-pen "Honest service"
, g* |+ S5 O/ b) h: G1 Z' Send
# F% |3 p! n/ v0 |; W& o; g: Q1 s. G  G
[ 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.
, C8 s0 F  {3 ]1 ^  l$ _( n2 W  W" 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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