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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:
* g1 F0 z# o% l% Oto do-business
2 e: o# A  r" ~4 A& b rt random 360$ k2 U; f  ]5 v& H
fd 1& R" S, z9 o' K& E
ifelse(other turtles-here != nobody)[
7 F, s* W; K" @0 z2 y. f0 i   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.' ^. Z9 v5 s/ R6 T! ?2 j
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ ^# X5 v$ q* ^8 W   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 a) }) v2 X& C) r$ A! E7 L, w$ J   set [trade-record-one-len] of self length [trade-record-one] of self% K' ?( G# Z1 q3 _0 A4 K- _, r. |6 _
   set trade-record-current( list (timer) (random money-upper-limit))
3 i0 K3 i& C6 x9 u8 {5 e6 {5 n
( o1 m, z, s1 C! j问题的提示如下:9 ]% F+ s7 s. Q5 V
2 \- r" m7 R3 Z+ s/ ]& \0 L
error while turtle 50 running OF in procedure DO-BUSINESS
9 P. U" y) J! x/ n6 c$ U( f  called by procedure GO
% t! N# H, Z& o; Y- b3 WOF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 m6 I% G) Z1 y, D% a8 S0 N
(halted running of go)$ x. ^4 o' \* L+ \: f  Z" d
0 S8 p9 v$ F6 t8 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~~
6 o8 u7 @9 S; Q1 o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6 r6 ~. b5 }" ^
globals[+ r+ ~5 y; N: i9 ?) g+ f2 m1 J
xmax
; U& `# {; L8 O  d, r" zymax2 p; O- i% K! W) E1 r" I& g
global-reputation-list
& m& w# s( r/ G9 x" |- _
, ], \& w5 J- f9 |; };;
每一个turtle的全局声誉都存在此LIST2 \7 D6 b7 p# y+ ~2 t9 d
credibility-list
0 {( N3 O7 }4 N0 c4 d: w5 f;;
每一个turtle的评价可信度6 \0 _- j0 K4 C0 p
honest-service- @8 \5 Z) T( e4 o9 o( i7 v6 Q# J
unhonest-service, s+ u3 _. V% x" _
oscillation
% n* Q. v6 K0 @' k2 ?rand-dynamic/ U$ ?% V$ l, K+ T' u; s8 V" v
]
5 |6 l' c0 _0 q
$ l1 z& E, w/ D' C+ \7 U6 ?% C  yturtles-own[
4 b! E: N/ k5 @. atrade-record-all8 |4 _6 ]6 G- x; _2 @
;;a list of lists,
trade-record-one组成$ X9 p3 h* E, ?9 W+ g" U
trade-record-one
/ G( U' @+ W1 p* ]) w% 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+ \2 d3 r0 d# R  l# m9 I4 k  s- C, a

0 w9 b% r! B. `7 o4 h4 Q6 N$ t;;[
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]]' t5 m. m) S( n
trade-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]( c) r/ x5 }/ g" d
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
5 T7 c  ?5 ]+ n  S9 s; Cneighbor-total: Z7 }9 z. Z4 C
;;
记录该turtle的邻居节点的数目
& P- y5 F& z: l* ?0 Qtrade-time2 \9 O! H& T. K
;;
当前发生交易的turtle的交易时间
& j. f3 T( x( W" pappraise-give1 f9 T6 H% j: r- M, C+ Q/ c# G
;;
当前发生交易时给出的评价* C% q. X( B" M% b- D* p6 D
appraise-receive
% I. U9 _7 ^, ~/ f;;
当前发生交易时收到的评价5 C* {, g' ]) t( H
appraise-time& Y( M9 O7 o( B+ ~4 b3 v8 B  ^7 I. Y
;;
当前发生交易时的评价时间
/ c* y/ Z0 R4 L) Q( @; Plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉" H& V( x2 A& b% r
trade-times-total
. m0 ^9 N" I& ]4 e* x' T8 c;;
与当前turtle的交易总次数
2 S5 q# y, ^* T& Z, Htrade-money-total
: A0 j' Y8 A# C, j! e- T* F( n6 A;;
与当前turtle的交易总金额
3 S# J# q0 n: M4 [- ylocal-reputation
' i" S; P# z* G/ Qglobal-reputation
; ?' f* c! `7 g, Icredibility4 I& t2 ^( h+ H. A2 r8 L' Q
;;
评价可信度,每次交易后都需要更新
9 Z; ]9 M& ?6 g" j5 a2 bcredibility-all
! f4 g& Z+ Z* m6 m7 j1 O0 r7 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
0 w: m1 A* {5 g! n2 c. y" p8 n' D; e1 U+ X
;;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
& c1 y% y: c6 t: f' i" rcredibility-one$ F  f* v2 C* t& d8 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
7 p2 g. h$ m: r* V; C. `( uglobal-proportion* f( W' B  l) x: Q* E) R, W0 ~
customer
1 M7 E, k- j5 p" j, Ocustomer-no% a- E. c, s2 b
trust-ok$ l. T4 H6 D# n; A# R" a2 g
trade-record-one-len;;trade-record-one的长度
& s! ?4 U3 m& a# T6 k]$ u- N6 k- e; f0 g3 Y+ U6 W
$ L6 X. m1 ~5 G7 L# t" [+ d
;;setup procedure
+ O/ ~. y0 x* k/ {/ {2 ]) \2 {8 k" j* K
to setup3 E, P8 \8 y" Y; @3 `( B+ i

8 K' t/ g5 ^7 H1 ]ca

0 m% f1 F* E+ d9 S; ?( {5 J2 l7 ~7 @
initialize-settings
: H$ U" B1 z6 J+ z- ?# s
/ k( d, T. _1 ~& g" W8 d
crt people [setup-turtles]
6 W5 e( p: p3 p8 f

# [( t- M4 L4 breset-timer
5 K# V0 D2 x/ R' @9 U$ \% ~; }
! Z' J& m3 j- v- |
poll-class
3 L- a# N; z  c9 h3 L

. |) _% [9 a' A- Osetup-plots
- y8 ]5 N4 z! }# [
" O4 R2 M" q4 G9 |- ~5 y/ W: m. o
do-plots

4 @6 p1 a* c( W7 l4 N; y; J/ Nend' ~1 `0 E0 ^- L7 z
0 S9 ^9 F: B, D) l# |2 V% k; w
to initialize-settings! K. \- `+ m) Y$ Y7 e6 p1 k9 V

/ e0 u1 M# }, z' ^set global-reputation-list []

) x- O6 [  V' U5 B' C, H8 n% k: A. X0 v& o/ P0 T( i
set credibility-list n-values people [0.5]
& T' }  m7 ]! {1 ^  Z5 T  U! t
) x' \/ a" N5 d; |; R4 ~
set honest-service 0

& @8 d  Z5 x; _& ^4 a
8 r1 B$ d) _# S4 Lset unhonest-service 0

, ?' C1 j8 X9 _5 P4 W/ y
% B! [1 l% M/ f7 V6 a* E3 \6 p5 s+ yset oscillation 0

; M% Y  q7 S- K, k- Q) H7 x% W: z; T$ N6 x! e4 ]
set rand-dynamic 0
" E9 U7 l0 P7 J: q1 |5 M3 h7 N
end9 x8 M& w* ~7 i6 A0 }
3 s4 i: h, L9 l( f+ B# y; K* n
to setup-turtles 3 c) m' p3 J2 k+ ]  R
set shape "person"
$ q2 ^! O3 E; c; x9 N  X5 dsetxy random-xcor random-ycor
: o5 c) g! K6 \set trade-record-one []* ^% J7 E9 P. j4 k/ I

2 O" |: n8 y# k9 i  m: \; Oset trade-record-all n-values people [(list (? + 1) 0 0)]
6 w6 m+ P5 u$ c- R# z+ U; N8 U

9 O* \+ e5 S7 M. j- c" d* \set trade-record-current []$ B& }8 g4 _" B# K) y  o
set credibility-receive []
6 u9 k  Z8 L4 f4 @, a6 \set local-reputation 0.5
* T/ ?, @9 W& l1 j+ Y/ A" ^set neighbor-total 0: \6 k. ~% w/ W8 r7 L  l$ {
set trade-times-total 0
# w' `1 y2 N. i" u* f4 fset trade-money-total 05 {/ R! }2 I) u! _3 `+ [: T1 B2 `
set customer nobody
/ E3 P- {  x$ Mset credibility-all n-values people [creat-credibility]+ M' {! c1 b) O6 O7 o2 s
set credibility n-values people [-1]9 H& {) `! g5 x  S  @$ Q6 q5 K
get-color
/ }! ]! A) `3 T, x' ]/ v# `4 E
1 D# G4 v% p/ |" h4 C4 p
end# x1 R: ?6 n1 e& j/ U4 A/ E6 [! E

  r6 \+ O. H/ S7 }, \to-report creat-credibility! b' j% M" _; c+ X7 \# r- n8 f
report n-values people [0.5]
" b# B8 O5 ^$ z  }" s9 Nend
: P+ n! R2 Z- L" D/ Y& M+ F
! ], `8 D: T* j  W, Y7 ~0 g7 F3 Uto setup-plots4 |" H- J& u! j( t1 m/ i

( K7 G& Z$ `& v: N# x/ ^5 Lset xmax 30
/ d( S% B, ]7 H
1 |; G+ `3 s7 K) j" [/ u  }6 q
set ymax 1.0
+ x1 ]9 U+ i+ e
* D& Q7 n" x  b6 n* C$ M: ?" O0 E: G% i
clear-all-plots
# o3 L) U" i' X  l2 I9 J
: q  q3 w9 x& r% T4 l4 H) w
setup-plot1

* e# ~4 Z/ X" k' W1 x1 o. w5 {  L0 R/ \- D
setup-plot2

5 J" `. h( F7 n$ d0 E4 W8 K" J8 M: N8 ?$ d3 M. b9 c
setup-plot3

( R- ~& V' ]0 h9 Pend5 O$ i; r+ D! r. f8 |! p4 q

6 e/ t: ^$ }- m2 d8 q' P;;run time procedures
/ |$ h2 x2 I- H$ T+ k" }
6 I3 V: ~2 \2 N% o) Y+ T4 q/ p" Qto go4 A+ U9 h; P8 @$ M: w1 a
/ ^& x2 d$ h- Q3 R; f! x6 c* a% L
ask turtles [do-business]

% \, e5 M, R7 c- U+ vend4 }0 v  N- L& _! m0 H# O, V

- D1 C5 Y# J0 Yto do-business
" k1 |, ^1 J$ y$ D) J1 @

. W4 C* X4 Y- A/ W. ]8 ]& W
/ m/ p6 o1 V  trt random 360
2 f4 [0 h3 J# U9 J0 x6 s

. r# z$ `' B, X* z! z( k$ ^fd 1

" g# R: s+ C. V' k% M
# W) B7 V) e, L: d0 {# B7 t( d8 O4 Yifelse(other turtles-here != nobody)[

7 }  L9 r7 T: n& ]/ W& `% t
1 L4 S9 @8 o# _( oset customer one-of other turtles-here
5 _5 m' r4 A4 z0 h, A! V  Q1 f8 f

) z6 b3 o& \. A;; set [customer] of customer myself
* ?  i; |5 U3 e4 Q. C5 n

! f6 N4 E5 r; ?: U$ vset [trade-record-one] of self item (([who] of customer) - 1). v0 |- F9 T8 t* e+ P
[trade-record-all]of self
4 e2 D, F4 O" ?;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# B1 h/ F: }: p8 p: H' L& S
, ^2 t9 q7 o- G! m: q/ S6 _1 j
set [trade-record-one] of customer item (([who] of self) - 1)
8 Y8 U! i+ d: ~[trade-record-all]of customer
$ m5 ~- A2 Z" ?. {+ [/ l
/ s+ S2 M1 v/ H
set [trade-record-one-len] of self length [trade-record-one] of self
3 w$ r( q" T6 k% {$ U
- T" O& H9 K! ~$ n
set trade-record-current( list (timer) (random money-upper-limit))

, d/ H$ M. x6 t+ ]) V. J$ e- ~
6 N+ B: J# D& g( Wask self [do-trust]
( {3 w( ]  N# C0 o: U;;
先求ij的信任度" h! l9 ~' h1 ^$ l7 o
7 z2 Y. ~" H( Y; P- N
if ([trust-ok] of self)& y  d- f# W8 g, L& W2 Y% G
;;
根据ij的信任度来决定是否与j进行交易[
8 x+ ~6 B0 f, Oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 S3 g3 I' t3 \) P% z6 Q, j. Z

+ X& B) f0 M: K* v, i. R2 F[
$ V* _. j) N5 a! C& D/ b
( Q, s) e# P8 r5 J, [
do-trade
' G$ l( d" o. J
3 V% ?! m* z8 }
update-credibility-ijl

% D9 h4 n' c0 v& X# I  S; k8 T3 J8 {/ F' I! O/ ^
update-credibility-list
# c/ z& W0 r* f" @. @
. i- P; s1 ^7 j3 A
/ w$ Y0 s, Z. U/ h& ~# A
update-global-reputation-list

  f! w( B% W3 l5 ?& q! I7 a" N2 K3 U0 Y/ X( W, L. t
poll-class
/ s& E7 P' Y5 q  s( N
  K  H$ h/ |6 T1 j
get-color

! C8 p, e& g% ?) f5 G& }6 d- K; p8 Q* J
]]
! [( Y; W: l5 W" `" L0 d' R& O. B9 ]7 W( a  Y0 d5 ?; ^& |
;;
如果所得的信任度满足条件,则进行交易+ B4 h( N1 |  K% \9 z, k) a

. H2 H2 g4 r- Q" l  u, h" n$ H[

( E6 ^( @9 O' b7 h9 R+ j" N3 S! P( |' p6 v
rt random 360

$ d. j- t! j) N4 u
  T3 J! M5 ^7 C' e% T' ?fd 1
3 w$ e& [6 i. _9 @0 X
8 z9 |) H6 @3 i8 x
]
: x1 E6 C. W1 v' J

- Y9 z9 w* _# wend

4 u3 [8 K" f% |6 @  S0 n! T
) v# l1 O, s. h# |0 F5 oto do-trust % z% x2 ^# B/ B5 x5 L' N6 g3 Y# ]! G
set trust-ok False
- T3 G- y5 n9 Q8 S9 e
" `: t1 e& k- h' W& e

1 \* M) y; j$ L! Z+ ^/ e$ J: s5 \" Zlet max-trade-times 0
& i! f5 U) Y# R, E$ R* j4 kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]  l; _1 T% p2 e# u: }! z" I$ R# y1 u& w
let max-trade-money 0$ t2 ?- h8 w8 D8 x. _% T9 r( v5 V
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ F; w, k2 U- ^/ {8 b, U& Elet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# v' F" p  T# W
5 m- Q+ D5 |8 @- Q
7 }, F. |( U( }' [; e$ o8 w
get-global-proportion+ v+ `: A/ s  K* W2 P8 d
let trust-value
, B3 x) M4 ^% 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)
: ^* l1 f( S/ M% P6 n
if(trust-value > trade-trust-value)1 m. [+ c. o5 q9 L/ Y
[set trust-ok true]! S' d$ T0 E( o* I8 H, N0 c. X
end
# {/ u! o: ^# e: n6 r5 o  |, ^. }& F
to get-global-proportion' X/ M& L) O' B" ^. ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 j7 i* c3 D7 |! j' O* c' }0 k[set global-proportion 0]. l4 J% ?- X8 ]' _0 c3 o) t
[let i 0
( ?, o$ a* W( A8 V. q, E. w3 O3 olet sum-money 0
! [7 z7 G3 p2 R" |while[ i < people]$ N' H3 m& X8 P3 ]( |
[
8 p; G- u8 P9 z# a# C9 D# qif( length (item i+ l1 J( E7 U" B1 M: h: C5 r
[trade-record-all] of customer) > 3 )

' @6 }& v7 |1 L& s[5 a5 h7 ~) b! P/ K/ N" b. B' l
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" P# k" Z0 e' u$ _6 s3 \]
# D& |, U( b: d* ]]
+ c% G; i$ P# K5 H9 r: nlet j 05 I! @# j* R1 c# a9 o
let note 04 U* ]5 T# Q  u+ R. d% m& W* W. r% l1 O
while[ j < people]
  P/ ]6 b+ t7 X+ p[
- G0 [+ c- A* D$ [& q- ~if( length (item i+ x4 B" w) P. F( W. N: x
[trade-record-all] of customer) > 3 )

- }5 r4 q& z9 D5 d  T: N4 D[6 d# Z3 G* W7 P* j% ~
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ S4 }0 g$ _0 v9 G5 L7 o6 Y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" ]# v1 }" _2 R$ @
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, i  {4 \" i9 b7 Y]6 s& h" [- \8 Z# q; l* Y
]: I4 }  h" R3 R5 |4 q! w8 C0 {# ]
set global-proportion note
( m$ v  U7 a  R/ u]# W5 r$ P: {; y$ ]# e
end
; V" x& _: C3 j2 P: q1 u2 {4 Z2 T7 E) H
to do-trade
% c% l2 i: c1 L;;
这个过程实际上是给双方作出评价的过程; \- N* _! h' f" S5 J5 }9 L) ^
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: H& t" |3 o2 Q* {# L2 ?- L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 y  ?  Q0 m. `, f! n. Lset trade-record-current lput(timer) trade-record-current& s/ h6 ~* ^& S. Y* b0 J+ L
;;
评价时间
+ d# S% S1 X$ }0 F% @ask myself [( f0 ]* }! Y8 g" g
update-local-reputation
7 r1 a( j5 y  S( p( u# H7 Pset trade-record-current lput([local-reputation] of myself) trade-record-current
6 }' |8 e) L- O. L]5 Y% f# s. b6 n
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" I9 h- G8 Z* F4 E
;;
将此次交易的记录加入到trade-record-one
$ L" D( a5 K7 H. tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# n& \( a4 f+ g# O7 Z$ wlet note (item 2 trade-record-current ), X) s- ~# m, B% M0 N
set trade-record-current. S$ X- ?7 p5 z; S
(replace-item 2 trade-record-current (item 3 trade-record-current))

5 V2 i6 M5 E8 ^set trade-record-current6 g2 n0 r$ ~5 f; _/ L5 A
(replace-item 3 trade-record-current note)
8 j' F+ i- G& x: X+ s0 |: d! l) L) v9 b0 j) q- X* F( v

2 u+ l  s0 E  i9 X% H2 j& uask customer [
$ U9 m: G) ~0 _! o- Y' t4 oupdate-local-reputation
; M/ i! j+ o- `+ T' e$ z* fset trade-record-current
, e, e) t/ Z! @9 D8 }* B1 Y# R(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ c; s- E8 X) q+ N$ }]  j& ~/ a6 q# i: @

$ \: G' j5 k  V/ |$ s$ h

( S/ `" u! Z! t, i: sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 ^9 V% m1 b1 f) c; u0 I
/ T# [) B* l1 G; D5 |
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 K: \! R2 ?( h0 c5 G2 H6 @2 q. g
;;
将此次交易的记录加入到customertrade-record-all$ t3 `0 o% k' _+ D/ F
end6 M: {2 [" E) b6 z, B
+ V8 n9 \4 J5 `" |. q# j
to update-local-reputation
4 ~" R- p& z( t8 ]" t( _set [trade-record-one-len] of myself length [trade-record-one] of myself8 B4 \& L" D6 u1 r; R; l

) B: J& Z& V& r5 ~# \5 U
1 m. |& ^: h; F6 ]; A# b;;if [trade-record-one-len] of myself > 3

% y0 m4 Z$ ^) _7 A0 P' s. p1 F1 oupdate-neighbor-total5 `, p. m& b# u' D9 x/ B' S- p$ c
;;
更新邻居节点的数目,在此进行
: d; I9 e$ }& O4 Ilet i 3! G7 g) g1 N# w: Y% [( F4 d# o
let sum-time 0
; L4 W* H) E7 C2 zwhile[i < [trade-record-one-len] of myself]
$ q0 y8 S0 T. I$ C[& J3 V% r/ W. U, T
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* n0 P! r+ k; P+ I
set i
. e, H; X: E: H0 w( V( i + 1)
2 }( L/ s/ J8 h5 Q+ Y
]- o: w7 f* R1 O5 m/ G  F  Q
let j 3
; r. M5 [# q8 U; Vlet sum-money 0
3 W) E2 ]9 E* t6 j1 b4 Bwhile[j < [trade-record-one-len] of myself]$ [8 ~2 a; a5 [
[
1 p! Q# R( b3 T4 m* u: ~8 bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
. [% c' s/ _& b# L  t. \% Yset j) v; H8 d7 V5 Y& c2 k: S
( j + 1)
% d* Z4 s  Z7 m3 m& ~
]
8 z. i! [8 e+ m. B: _let k 3
/ g3 F+ j7 H, D; E& S0 O$ Glet power 0: O% v  p+ e! h$ E# w9 e7 m
let local 06 ]4 [3 w" K9 \4 G) s7 d  }
while [k <[trade-record-one-len] of myself]; m8 ?" J6 j1 ~" C8 }8 q3 L7 V
[4 T8 B  N1 k0 O2 s4 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) % b  b8 m+ o/ ?* Y# }
set k (k + 1). S) }0 Q9 N* i, F6 [. l
]
" s, d4 {% j& c3 M0 I" i$ uset [local-reputation] of myself (local)
) ~" [( D: \' o& wend7 O1 O* \( R8 r1 |
  L# u+ e' T! N; C
to update-neighbor-total7 o8 ?1 t, y4 i

2 W) t3 y5 b6 s, Zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 e" P; K2 \$ \7 z8 M6 N/ d$ V9 H0 `6 R$ Q# b  j. A* |
# s3 [% W  Y& w1 C( m/ F
end
9 }5 v0 b" j' S' z3 f/ ?9 C
, g$ X) l, p  ^+ N% zto update-credibility-ijl
5 I2 m$ q' Y) z) W  e1 J/ [  a6 s  O6 u" u  k6 d7 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。
/ X/ M/ n3 O6 n0 G- C: B) d* ]& H- Z. tlet l 0; h* d6 U3 i4 B) X3 _1 n& V/ X
while[ l < people ]
8 O& P% r! R/ \& R;;
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: ]  l2 o/ H! D" Y! K  ]7 d& m
[
% P; L& ?) h- k3 ?: m0 Ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 S- w$ ^/ e, T
if (trade-record-one-j-l-len > 3)
9 {) u" s' [& `7 o7 a[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
6 A6 }' g" ]. ]3 ?9 Slet i 3* m7 y0 ]$ {1 M0 a
let sum-time 0( g% E  _9 m) D: U
while[i < trade-record-one-len]0 R$ N6 Q5 d/ c& `7 ^% q
[  e2 M/ R0 g4 g* G7 C4 @& \
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 Y; L6 E7 H4 f1 I" F( g$ |
set i" n1 z0 d( N7 `, Q) R
( i + 1)

: w2 ~+ S7 ^0 S6 P1 x; i! O1 D]) F$ _$ a) u$ \4 C' l
let credibility-i-j-l 06 f7 d( M/ V1 K3 J( u+ G
;;i
评价(jjl的评价)2 Q8 b* S/ |9 K6 i. ]* z1 g2 {
let j 3, N1 G* \* d" F
let k 4. @8 y  R: D- t; K; K2 W! t
while[j < trade-record-one-len]* k, T2 N% M+ L' y, H+ w' b, O
[
$ S/ `9 y- V& `- r9 Xwhile [((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
; U' I' z' l& B: \  {8 P+ Eset 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)1 K* D% Q! m$ E; l
set j
# ^8 w) i( G! Z5 x/ Y( j + 1)
* Z8 Y8 `6 j% V4 \' g
]  N0 d  i& [: Q" ]- p, U) m1 t
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 ))4 K9 L$ t4 `+ \, h
6 E$ @" a( i; E9 k) w" d. g
, o5 O  I* B! T6 g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ z6 Z1 m% M% w2 d& k;;
及时更新il的评价质量的评价  _5 J1 V& o  c5 _7 i' Y! t4 K* I, u* E
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ], v3 ?/ V0 e: Z; v( N; ~
set l (l + 1)6 q+ H  r, a' p2 }1 ^, ]+ X
]
, F( H6 S6 {  O/ c, z' tend* n4 W5 z$ P' K
. s% ^# n% H, n% P
to update-credibility-list
3 I* T! e; Y% T& p* \let i 0
9 f) Y' |7 v- }/ [; f! n7 ?while[i < people]" q5 b. S" X; h  Q7 N
[( Q  }5 l7 u. j" Q+ Q
let j 0! A! e7 `9 J" e5 `
let note 0
( a& u" i1 b) ]% e1 D- b) ?$ Mlet k 0
( r" E7 Z3 P( T. h; c, f;;
计作出过评价的邻居节点的数目/ k4 e$ \( q6 ^; u5 {
while[j < people]
9 _9 I: z% K& h0 `5 u& }[
3 C; R! W- E7 [0 L' @6 o4 d- \if (item j( [credibility] of turtle (i + 1)) != -1)
' B9 N1 |. _4 ^, [! |;;
判断是否给本turtle的评价质量做出过评价的节点
6 z1 x# }$ x! Z. ]1 q[set note (note + item j ([credibility]of turtle (i + 1)))# |9 ~6 D: p# z' ]; ~! C
;;*(exp (-(people - 2)))/(people - 2))]
* n$ e4 N4 j( \3 |7 |( g
set k (k + 1)1 O/ A4 \3 r$ z2 Z* f7 Y/ q
]
1 E3 f7 q1 r& _( ?  Z* _set j (j + 1); y" Z0 ~) a' D5 p0 S' [$ V" `* I5 j! B
]; g, D; D  R9 G6 f0 W
set note (note *(exp (- (1 / k)))/ k)' A; t+ D7 ]# f# ~1 g% o
set credibility-list (replace-item i credibility-list note)
- S- z8 D( t3 _2 R' ]/ l, Tset i (i + 1)* J# `5 P  n- x4 d. ?
]
4 e" `/ O6 ?. y& H, q/ f) a$ gend; P3 S3 l0 {2 [
# u: R2 G, R% W* n) w
to update-global-reputation-list% v4 |7 {0 J- }% ?/ J9 J% b
let j 0" {6 v, _$ D8 `9 G: {
while[j < people]6 K0 G4 K, g' ^# I  R; K
[3 N" g4 y7 p# z
let new 0
" ^. ?5 ]8 O2 ]% N) X  I" G0 z# l: E;;
暂存新的一个全局声誉
5 H% E8 m$ m1 X* O8 G" Flet i 0
( P( v4 N3 Y# O2 j; ilet sum-money 0) I/ c1 n  W! @; N8 c
let credibility-money 0
" ]. e, e! O2 B) E6 F* U, Hwhile [i < people]- m  @, L5 n0 }# t( o# N7 U: p
[& f; p% X; E) q! N
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) i1 B( V& Y: K4 E+ Z- l, G+ b" z/ sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# V" `% f% f2 `1 l
set i (i + 1)+ m+ {! O0 V3 T; Y& a
]/ D8 L, G) N+ R" S
let k 0  s' s' J+ O. j+ Q
let new1 0
1 X2 K% J) j5 }5 s! x1 J" T% owhile [k < people]/ b% M0 ]8 Z" }+ P0 q7 g: o
[3 w& k8 O) n# o( B: h/ x
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)5 B7 L( f$ a! n0 e7 a& S
set k (k + 1)
, v3 W9 w$ U. B: r]' l. {0 q- a9 B# Y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) h' G) U+ ~) X. [; p# N# A' ]set global-reputation-list (replace-item j global-reputation-list new)
7 y' e5 |! \! F+ M/ U  h: Z2 H# m, kset j (j + 1)9 `2 P6 s  O8 I9 e, o8 `
]
7 L* B6 y2 g8 X& ~  w8 Aend
2 ~& `/ q" m/ F& s4 n' f8 T. a' y+ m6 ^: p$ |

' a& {0 o6 \2 U7 }! s& W. `: R$ }8 T9 k: g. E
to get-color- y4 }6 V* s( z; S  ?
" T( C6 X! U7 H4 t' G; \7 O6 n) v* ]1 W
set color blue

/ H: y; l% h! C9 yend- A# F9 j* D! V* i
8 h- h! T! k, E! P7 i# U9 C$ [
to poll-class
3 j  L0 t# k8 j" r9 Qend$ ^. R" \9 ?) ?
; q" e3 _1 f3 h5 j( T
to setup-plot1
: T! B7 y) X& i  R; L9 V- I' ?
! T$ L9 Y- O2 e! E* y4 _8 Y. r) U2 R  c, vset-current-plot "Trends-of-Local-reputation"

( j) q6 e' `+ @  \# m2 `
4 E2 s# T% P7 q! @5 Q0 L, F2 mset-plot-x-range 0 xmax
! C- p3 C7 A9 c
2 N) p+ b8 U0 y5 w
set-plot-y-range 0.0 ymax
4 C8 q2 {- K* V/ N4 D
end
1 F4 i2 K0 ?# J. q
4 Q" w2 I- N$ f2 h" n" rto setup-plot24 d6 ~& q6 s- R  ^+ b
. |; s4 ~+ x- Z  z7 f
set-current-plot "Trends-of-global-reputation"
; A- z" E0 |0 ]6 I$ ]* ~5 ?
3 Q* ~1 }; x6 v- v9 D; P! W1 \
set-plot-x-range 0 xmax

/ U, Q- j( Y& \! u  s- X+ F" u7 R
, o0 g* c3 v# ^5 o$ M2 P6 |set-plot-y-range 0.0 ymax
, e. k2 v. K; ~, i
end' I# V; a( p1 D8 E1 U
0 h6 j* {; y4 Q6 e( Z
to setup-plot3
6 o7 }/ c  f9 D/ r8 J! e* g) p' j( Y/ G# l, A* n8 s9 c$ O6 H: T
set-current-plot "Trends-of-credibility"

2 r, s$ N# y0 O, ^3 }
' v) `# |! X, X; Z1 bset-plot-x-range 0 xmax
) @) q3 D" `% R/ }8 b7 k% S7 b
& J0 J9 I: y$ u6 t1 D
set-plot-y-range 0.0 ymax
9 s; Q% \  m# ^7 L9 [: i
end
# U. K9 s' L0 P: q" w" J/ {+ H4 @. X" D( o3 M- ]
to do-plots
; d  s( @& [1 I0 d+ e# vset-current-plot "Trends-of-Local-reputation"- e( M: S4 i. r- r
set-current-plot-pen "Honest service"
( a8 b. S2 z. u, Tend5 }( G# ]9 X+ y4 }$ j

' x* O4 o. W9 }- D3 H* P- S[ 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.
2 V2 \& w1 p5 _$ x0 c# j. M) q
3 O4 G; X7 t9 ~2 N1 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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