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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:! `; I" y) ~/ C" z5 R" T9 i" ?
to do-business
) Z) r' A3 c  I: @* q0 z, E rt random 3606 @- w; w8 q7 P
fd 1% L# N5 j4 N- E4 V6 f
ifelse(other turtles-here != nobody)[
5 m' n" Y: w; _   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.$ e7 M. E1 g' x# e, l) G( ]% j, e
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: I% x$ Z3 T$ A! g  S2 `% @0 J( y0 A   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 a( f1 D* v/ _  k% _
   set [trade-record-one-len] of self length [trade-record-one] of self
$ B" f& q( m, Z* i4 e) y. x   set trade-record-current( list (timer) (random money-upper-limit))3 o1 P' j+ E' L1 x! r; @% y# U

3 N/ I' O2 e, E: J问题的提示如下:: b) _) H8 F; J, u# d4 V
0 P4 z0 W% g- c* W% P$ @# _2 a
error while turtle 50 running OF in procedure DO-BUSINESS6 N) V, N$ ^4 O. |% ^
  called by procedure GO
8 r$ ?" a- B/ U% W+ K! FOF expected input to be a turtle agentset or turtle but got NOBODY instead., K1 f1 p3 Y) R/ H8 F* e# L' h% x3 W
(halted running of go)
( K( l2 |) s* {% X$ q. M+ W1 E& y5 \" m+ v" l
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~~
( t* ^3 s5 L( ~2 a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3 D: K2 y/ c# B5 H+ e" [$ w% Y' ?
globals[
3 v1 ]: A) W; X7 C1 Q1 S) ?! Xxmax0 W" d2 m2 v$ [0 H# h; R
ymax5 S0 M& s1 U3 g1 [6 W1 c2 z- a
global-reputation-list
1 x2 C0 `# s4 c# J2 c+ G1 Q% t" V
;;
每一个turtle的全局声誉都存在此LIST
& d# Z4 C! h5 o) D- q  x& b) acredibility-list
$ o1 |+ w( I$ a* i# n;;
每一个turtle的评价可信度
& F! B) i( m9 x0 l1 o5 c7 b* n3 ]honest-service
4 e; a) H8 [5 O# w1 D! p8 P& ^4 Nunhonest-service
! `7 i8 R2 Q9 Aoscillation4 l  q) q' Z/ g6 n1 i, D' L8 B
rand-dynamic8 L3 [8 I' X4 ^+ z9 e
]
  W2 q8 }) C3 [( [$ Y: a: z- k; Y/ }* i) F9 z: O2 g$ S
turtles-own[
& W/ L6 `: B" O2 Ytrade-record-all  V$ e& p1 x2 l2 ^2 L: b9 A( s, _' m& q
;;a list of lists,
trade-record-one组成
% p! r  A) ?9 n# ttrade-record-one+ q, B3 ^- J, J8 ?: Q* l
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* W0 L8 H, S) k& p/ \
5 n$ u5 L9 z! |$ W+ t: s& g: B
;;[
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]]
  y$ a' _) b( n$ @! W( V' g3 Utrade-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]: A  D3 Y$ A4 t, V* c" _; [
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list9 {; w3 B+ A) P0 ^* h
neighbor-total( [* i6 Y# O, y
;;
记录该turtle的邻居节点的数目
' ?* R) }& a4 m$ {( ?, Atrade-time% V# v3 V# Y0 _, c" c. ~8 U% O8 l
;;
当前发生交易的turtle的交易时间
7 w9 E$ g/ k" Q7 |: ?( }( qappraise-give
& V; Z8 N  }0 H. |;;
当前发生交易时给出的评价
7 g% U8 S# _8 a& O, ~/ ^( sappraise-receive
2 p  E/ L% n4 @3 c$ t. y' v! }; w- `;;
当前发生交易时收到的评价
9 O8 K: Z( ^: V1 p3 B6 oappraise-time
- ]! h. A9 T( F% C5 ];;
当前发生交易时的评价时间
3 `  @* Q0 R, Alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉; B# |6 a+ c: M4 N1 j
trade-times-total
0 I- d0 z3 w3 o+ t9 j( K;;
与当前turtle的交易总次数5 |7 m# g: V) ~
trade-money-total1 c3 i6 A8 ^5 {) Q! }
;;
与当前turtle的交易总金额
+ ^* L- l  L& A+ s5 q: c0 k0 I& jlocal-reputation
5 w0 C9 A. G: T. l% mglobal-reputation% f9 H2 S- c9 `; q0 G! T
credibility
# d6 l9 m  E0 Z5 y3 a;;
评价可信度,每次交易后都需要更新. ?! N/ j# K! e% j
credibility-all# D3 S. V* e2 r" [6 d4 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  p3 M- k$ O2 J4 C3 R% B1 w  T

- {; B: S1 `9 L% F- l& y  p;;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- H" G/ d4 W( N; P0 V9 ~. o
credibility-one
% S: n4 V4 o2 U* L3 t6 J9 ^; P;;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- N+ I. M$ x. i1 E' j
global-proportion( K! z" h8 f; V2 }$ m
customer
$ ^5 e- _+ {5 |+ E, {* }/ P5 m# h4 W: Acustomer-no
! G3 \$ q3 t! f# Q  O" Xtrust-ok  V. Y# _# w& o7 I+ o
trade-record-one-len;;trade-record-one的长度
8 X7 h/ G& L# ^+ i# e0 J/ j]
( o. F9 I' G0 Y; E4 @; s. i4 t. |
4 A1 B5 D1 G  r+ b;;setup procedure
" @- p9 B/ w6 X: V. M# [7 h& C  a: g/ e! S
to setup
3 g* ^6 |) \/ {# f2 o& i$ r. w- s! T1 [# G. U# ~$ D6 p
ca
9 X7 w) K) `: \

4 R1 m0 `: f5 y5 X/ `0 f# t) Dinitialize-settings

; C. D; `' v! J+ Q
3 x) p' h1 ?) N) ~9 W7 Q$ Ucrt people [setup-turtles]
" R- @7 t0 o5 L6 }# L5 t# p" F9 d
( G1 ?. ^% G) U3 Y8 P
reset-timer

& J) [* N- z: S. ?* d8 y) Y5 V( i1 F0 d% z4 r6 R8 r2 D
poll-class
) j# Q3 q4 I6 z! f" n
8 e* e. }5 {6 s! _( i  V1 J
setup-plots

0 \& _$ d2 H( S  _9 x( }7 V
5 ~9 l# _7 n2 s( q5 M) t1 @do-plots
8 Z  w2 m; x; [- }: z
end
% X2 i0 L9 P: p$ j
6 ?- q& ~1 [% @; O7 |) b, t% B  wto initialize-settings( X3 t! w+ B- C: d* b

$ Z3 H8 o$ n8 m- `: xset global-reputation-list []
) H' Z" S& @8 t$ P  X5 d( z& v" p

7 ~4 i# \7 L: v; b! h) d8 Zset credibility-list n-values people [0.5]

6 D% l3 X+ ^5 S% Q  \- m1 R% ^
& B  ]" O! l- Q" @" `2 Fset honest-service 0

7 D5 M6 K: _  }! N* a% l/ G+ m6 z2 t/ m
set unhonest-service 0
% _5 |0 b6 R8 h- g, H% S: |. d, U7 E
& P; ^. i9 P+ `! V. C2 \, A
set oscillation 0
8 b4 L; Y" k; l

7 e  I5 T2 `2 s6 `set rand-dynamic 0

( w& A( U6 @4 ^& k3 X( _end, @" i9 V8 k* H7 C% y7 w
" c5 E6 K" Y, M! l( j( h
to setup-turtles 3 S2 l. c1 ~0 o
set shape "person"
) d/ m* G. x3 R  j1 G. F; u8 msetxy random-xcor random-ycor3 N( ]+ A' ?- r( N/ r0 B4 ^
set trade-record-one []; P0 z  Z* R; V8 b: P7 U
# B& s/ o! K5 B- r
set trade-record-all n-values people [(list (? + 1) 0 0)]
+ R, G( f' ]( e- W7 W

" ^6 N6 u# Y- ^; P" x& J" p& q( u! hset trade-record-current []
8 ?+ O1 I" ^2 T+ Vset credibility-receive []0 N8 c1 b  ^* e9 k' c
set local-reputation 0.5, \0 w. T' E+ s  N$ g  Z  ]( R1 l
set neighbor-total 0
6 b' y5 z$ q# W% R' _$ iset trade-times-total 0
5 L& F5 W* ~  x- i2 N9 Mset trade-money-total 0
! Y+ G& }! D! Kset customer nobody
4 J1 g! e; s9 A, o" N8 Y5 vset credibility-all n-values people [creat-credibility]7 C( {- c3 K1 P
set credibility n-values people [-1]
9 Y6 D! X3 a3 ?7 [" b  {get-color
+ F/ x1 A3 [0 U* R8 T4 S  K/ M/ l7 G1 x

% K' }) k9 w- H) ~  @1 g' hend2 {& J+ i# y' ]# v1 ~- S

1 L$ I: |  y& C, Zto-report creat-credibility
  w( i" T- g1 X! F( X9 w* Preport n-values people [0.5]
5 r. n$ D0 I9 r  t0 O( w% fend
' {& e. K+ a, q: f# n" U0 V: r, I
, ]& A+ B2 c3 I8 x% o- wto setup-plots* l8 z+ E4 ^) N1 G

- U1 V5 ], C  xset xmax 30
8 z1 }/ f3 k2 m. ^4 B  D' j
, H% b) f0 I, T2 o7 F1 X9 z
set ymax 1.0

& c( |  c2 m8 X2 }: r) I6 ?' N* a0 ^3 Q6 a" A" o
clear-all-plots

! |2 J: R& \7 T  H  A# `
; a3 h7 U8 g- }$ V: `! Gsetup-plot1

* M7 M3 i/ b8 \2 {3 a# |# h; v- G& q, [4 Q3 C9 x! D
setup-plot2
. C) D: K' m4 ^5 x
2 P) O. W* g7 T
setup-plot3
, r- ]2 L6 E) e7 h. V& E
end
3 _. ~9 I( i: \* S5 N. r  ?5 E, e
& e. X% _) ]! S) U& n$ ~0 X& o;;run time procedures
8 p  y" ]* \0 m
4 a. X# D( G6 \% s, |to go3 Q* M; C, M. P* Y. Z% p; W

: E# y3 c+ N) ?8 i7 f1 W+ oask turtles [do-business]

0 A# ?- I) J# P- x# gend
5 H3 k0 f' x& c" \4 u, X/ V5 y3 z  z, c) R
to do-business / X( X3 z, f8 e4 \, y! V: g
3 d; A# _% @6 |( @- P
4 F( {0 i& f- g6 j
rt random 360
% \* Z9 j/ O) z0 {

; s' L( n/ |3 mfd 1
+ U' L8 {! |" s$ a" u8 [6 Y' @
0 v5 T; I3 m' E) e/ f7 R4 ~# j/ v
ifelse(other turtles-here != nobody)[
- n2 y& k4 n! r, a) |
4 |1 P  k8 h, r5 ~8 r+ m% g0 a4 c2 G, w
set customer one-of other turtles-here

3 l- f/ Y& u( c: ]/ o4 F1 {8 f5 g5 J. j6 ^5 D
;; set [customer] of customer myself

7 c6 ~# K' E4 e5 a1 @1 ^1 @* f
. b) i0 O! ?% q$ C( \0 ~set [trade-record-one] of self item (([who] of customer) - 1)  R- g( U2 k* ?* {* _, z
[trade-record-all]of self
" r- o6 _: a- u' s3 t;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 ^" X5 H# b. @) e/ C" _" h- Q( j3 o# ~2 Y7 H! T; Y
set [trade-record-one] of customer item (([who] of self) - 1)
6 q7 N( T3 q3 F4 ~[trade-record-all]of customer
3 H; Z; e4 C  @' h6 N8 z- |
! g4 W* _5 v% R. G: q; m$ p
set [trade-record-one-len] of self length [trade-record-one] of self
) R7 a, y% R0 y- n

' w; S8 x4 A  q% y& }$ Hset trade-record-current( list (timer) (random money-upper-limit))

# ?3 U0 s1 ~( F" _- \' e; r8 z' t
ask self [do-trust]
7 u% a( g* {$ m) ?. X;;
先求ij的信任度# @8 j) `( q# X2 {! p( U

, D( E! P/ }# S  L. C+ r9 Aif ([trust-ok] of self)
$ Z: W- u- X; e2 X- b/ ?: w;;
根据ij的信任度来决定是否与j进行交易[
- j1 Y* ~# ^0 `- m  X* Qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 B+ d: U2 l5 m& B( x" ^& ~$ y
+ ~. T" D8 Z9 T& V2 w, I1 L
[
& _' k( i$ {9 U# c6 U0 L4 K/ s* }
- ^* m5 r# A! m4 h+ @
do-trade
6 u/ c0 G5 `3 E

  G/ `3 s# `' U) ?4 t1 t& bupdate-credibility-ijl
1 b" i9 J0 `+ r( p2 U: J% a
  y8 c# W  c- ^% p) O0 J
update-credibility-list4 w2 Y" E. x2 c$ V
2 t8 q  o: p# n4 e

! ]* p! }5 v4 {/ H2 Wupdate-global-reputation-list

% `3 G: n$ ]9 o1 E
" L- ?7 p8 H$ A/ Z* c/ A( F7 Ypoll-class
/ b. `2 e" A5 `7 B& F
& h- u$ V0 Z  R8 ]# `
get-color
; @% d+ w  P9 c

$ ^4 v: ~# n$ z# f1 }' G5 k+ n]]
2 q4 c8 O! x- r6 q' D# M8 ^8 ^% S) a+ y) Y
;;
如果所得的信任度满足条件,则进行交易! j( ]8 q; Q" ]$ U( Q0 |: v

! ~- h0 h$ w: r[

: Y# t8 A% b6 g; Z2 t8 V9 y+ b  {* k1 z
rt random 360

8 ~4 r5 B( w3 J; S0 E: R4 O
  R, m0 _3 |. J6 {- @! l% Vfd 1

- Z' Q8 C, o, q
& O, q0 g0 S8 s. j" h6 [! I( e]

) d1 X0 W* _  @( G0 s. M
& o( `- a+ Z% J4 A0 _3 T- x; aend
7 k2 F* r( q0 x( U! c. [! ]
+ H! W* q0 p* B; y$ ~
to do-trust
- I' K$ t6 h# ~  n4 l* V/ h+ n. @set trust-ok False
+ O  h3 G* s  o% ?7 M; E/ h. X) X/ H  D

) p4 `* c7 L$ B& B6 X3 T" Alet max-trade-times 0
: V1 x: L# J3 ~6 {9 g# n+ Hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ Z. W3 {6 b! c
let max-trade-money 0
1 ~+ F( N. W% Lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 o! |# A# h7 [) _
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 D( Y/ t% D& t/ m4 K' c" I. u  K& c2 K* _' R/ W

4 N6 Z; x/ R+ h" Zget-global-proportion( T) K, g6 z) X- l5 R
let trust-value/ }# w+ g/ @' |8 J; u3 n! d2 L
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)

+ f, H3 J; d. _/ P( lif(trust-value > trade-trust-value)) X9 a1 |# ?$ f8 j0 S) d  R3 h
[set trust-ok true]
* U7 I' ~8 C5 S7 `end
0 b: A  u/ s3 E- y0 r2 _- u5 w6 K3 h5 ]/ T; A- a: T: ~
to get-global-proportion4 D( \) z- x/ S6 l" e
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), V' Y. P/ s# ~2 w# ?# r
[set global-proportion 0]% f0 t- Z) p5 l. {6 I7 w5 Z
[let i 0
4 d: W0 t* P9 Slet sum-money 0& E, `0 o2 }  h6 W( q) h
while[ i < people]/ `1 K- u& k5 V; \2 e& s
[/ \2 ^5 W5 ]3 s! W3 D! [( g
if( length (item i
4 c, u% `0 Z0 T4 x% i9 c9 h0 I( ~[trade-record-all] of customer) > 3 )
  x& E0 }! m9 R4 x+ u1 h& c2 n
[
) I# {! @. F; K3 U0 @8 hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 P3 f3 M4 Y1 U$ o5 B) g6 B6 n
]
, O6 w9 D( }% v3 A]% H% {+ k2 b9 U$ k0 K2 P% S. O5 d
let j 0
: s' d1 x4 Y6 u& Vlet note 0* R: t& A& I; ~* T( p, @
while[ j < people]% y3 c9 i1 d1 n% V
[
$ f8 `- I8 q! V0 n  R% G& Xif( length (item i
- l4 b9 l; b0 l[trade-record-all] of customer) > 3 )

1 r3 c% `8 k0 ^' e! b; |% D[. a% v0 @, X) f" c
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 P# k" U" Y5 ?! V
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ A! ^; P; W  M: i6 \
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 P' H5 T$ [4 P4 ^# s]: G* G8 G! d- L; t) ?% [
]3 Z% M  b- n# q- e" I, X+ A' Z
set global-proportion note% `- q2 P$ \5 L3 y7 O
]5 C8 p# C" P9 A9 [+ \' Z. T: G
end
# }, }% ?. z, j* R/ s. @9 \: n3 N: |( Y- {
to do-trade3 |$ ?1 _6 d" [& L/ u: i& p
;;
这个过程实际上是给双方作出评价的过程! E& Y* T& k% L1 Z8 H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 i. _0 w' a# |/ W* D" c% t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 b) i. u# a2 ?
set trade-record-current lput(timer) trade-record-current. D% i7 d* c& n8 h! ?8 |2 m( S
;;
评价时间
! y. B6 F8 ^) ]4 X& T- w# vask myself [
9 M9 }/ B  o) X8 iupdate-local-reputation
) E8 C) D6 j) S2 E  r' tset trade-record-current lput([local-reputation] of myself) trade-record-current6 {, G+ y0 {! Y( \8 E$ K  E, i
]
& g, O3 P/ F- b7 b! s% Pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 z  b" ]: O, R; s# g* I;;
将此次交易的记录加入到trade-record-one. C3 u, r2 k% _$ A  C: y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* s& r1 F4 s( F( Q8 Nlet note (item 2 trade-record-current )- @0 K% C+ J1 H& v
set trade-record-current
9 @1 f4 w3 v" a, u2 \& n" Y7 H. v(replace-item 2 trade-record-current (item 3 trade-record-current))
+ J* s9 y, `) c; {6 p2 i. ?* a
set trade-record-current$ Y% k7 P9 u- L- \6 `3 e
(replace-item 3 trade-record-current note)
2 f. T- P* h1 T$ i. v  W! I  D2 h# O$ F

* Q7 l* e8 D6 P2 ~: N0 g& e9 z. jask customer [; k/ m! ^& Q+ w6 I2 ~- M
update-local-reputation
; r' T* n, O& C/ Lset trade-record-current& C+ t- o2 E3 {; t  a2 S
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 a! g- H7 u7 s, [% P: u]
3 j: ^+ E; h, m7 y* u  @. N. w1 Z" s* M+ y$ G' H

- }% t% w! ]% Z( kset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 V) K3 a* F" B& |) x
4 |$ [8 c% |5 [
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* o9 F( s2 I, a  d* F4 b. s
;;
将此次交易的记录加入到customertrade-record-all
' ^; J7 C  F; W: M2 |7 B. p+ |; i' eend* s! L1 t/ r' G4 e% c& B
2 J& N+ |( }, M0 C0 {6 u# d
to update-local-reputation
' U1 ]8 s% K$ {2 _; r* Kset [trade-record-one-len] of myself length [trade-record-one] of myself
, s) A: ~) x* G' V! H# Q
4 h; q% ^5 W5 C6 |0 Q
, ^  q8 @$ B* W3 Z* `, s+ Y: V6 g;;if [trade-record-one-len] of myself > 3
" G4 B% u; s2 v3 f- r! d
update-neighbor-total
9 h1 z6 x  B6 x$ V: O;;
更新邻居节点的数目,在此进行7 y) e2 ^& Z+ p* n  b9 y
let i 3* m7 C( A4 |2 B# G! M
let sum-time 00 D9 a/ h: W" R) a- P6 U
while[i < [trade-record-one-len] of myself]
. ~5 }/ {$ H+ [/ k5 L! r) |[
* }: \1 W6 p+ T! A# M1 {set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: I! W& C# t  sset i+ K# A0 c! R1 K, j# X8 Y7 a
( i + 1)

3 a* I% g* @5 C3 u" Q# ?]! w2 }- J0 w  b/ M
let j 3
7 `, z+ O/ d/ z1 Klet sum-money 06 u% {: q$ X/ ?) l) q* q2 Y
while[j < [trade-record-one-len] of myself]
& j9 A% m0 W( r+ l4 Y$ R6 i# V( A: Q[( y" \2 [* M" O+ |# v
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)
3 F' T; Y7 Y5 H8 w6 Wset j
" x9 o  P/ I/ E: L" q+ ?: f( j + 1)
8 W4 {5 R! W5 |: ^# e) M' b2 z! ?
]2 e: h5 D* h, b' |& F) f. D( c
let k 3
5 E' q: `, N8 _8 `/ N# K/ R6 elet power 0
& w; `' M7 k1 J& a6 t. t( glet local 02 A% ]6 c( d; H3 D  x
while [k <[trade-record-one-len] of myself]: G4 z9 q4 w$ ~, F5 t) n- ~
[/ f* E8 L6 ?7 l4 K1 `1 u7 w
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)
4 _: k! T2 |. q% w, O: e% Rset k (k + 1)8 }/ t7 {9 P- ?. ~
]9 E1 c+ p3 l* ^
set [local-reputation] of myself (local)0 t9 z& H& A  z& h$ a4 n; D" ]1 W& t
end* S4 k8 p3 M! F- N& r- ]- ^8 h
/ K) L( m& z7 N" \- x' R: ~
to update-neighbor-total
/ ~; t$ n4 C* I2 A: J/ D" A, Q
- V) v* g5 {+ B4 k: v8 [if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" I* r- ]. O3 f' W+ ~0 i2 _% Q( f0 A. X
* j: H( o) x) g8 b
end
  J$ O( ?3 s5 G5 g9 w
2 X9 N! c" i* r. {4 Wto update-credibility-ijl
( ^! ~5 ^, Y# H( W1 c' _4 a4 ]2 W  k, q1 ?6 \7 W0 \, |) Y
;;
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。
  ^2 q+ ~' Q7 Tlet l 0* V: H5 e4 y5 v4 o/ G
while[ l < people ]
, g$ X5 o/ \3 O3 h9 H. d;;
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
# `: G( ~5 S1 A2 U) G[
/ z& U! B4 q8 ~, s1 Wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)* ?0 y4 x9 l1 s. d- S
if (trade-record-one-j-l-len > 3)' |. s! t* c0 f) p; U
[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
4 ~' `, l" X. `+ d% g7 z0 elet i 3
4 A8 u6 W- O* g! d2 O6 A- jlet sum-time 0
# L2 G- E! L" G" p9 I) Jwhile[i < trade-record-one-len]$ q5 O% _+ C! v, y& ~# C
[* K& v8 d  b% x) g) l, J4 c6 c: w
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* k9 C) r* n- h, Y. Lset i" @; F& l" a5 K
( i + 1)
8 `3 A) I" I1 b. N, l
]
' Q; R1 S9 |# T- G* |let credibility-i-j-l 03 s- m: O/ ~& h0 d6 j+ B+ T# s' U
;;i
评价(jjl的评价)
0 Q6 Z' s3 s/ \8 P  slet j 3
" z  z5 G8 I# x5 }4 K$ p1 L9 hlet k 4
2 c, I, {1 u- F' j. owhile[j < trade-record-one-len]8 H' X: @3 ?  q
[! q9 ^2 q  ^' O7 e
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
7 f( q5 S$ c- X+ N/ O& aset 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)8 i% ?. O+ Q6 z) C/ l7 }; d# [
set j# v, o2 D4 H4 E6 v. y2 N8 F
( j + 1)

" V7 Z4 V( w. g( _0 ^9 ]]
* l0 J9 _" Q# q& rset [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 ))
0 o- |( z$ A7 e0 R8 X2 h& i3 h* y+ l' G/ |6 Y, o
7 {4 q: d4 R1 U* {/ B2 p' @- X
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 O- r% C& N9 C9 Z& R" p
;;
及时更新il的评价质量的评价/ [- h) d% b, A  G3 ]3 ?) [: _
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& W( s% V% w4 V5 z/ q1 v+ C% {3 t8 W: H
set l (l + 1)( `# Q- q3 g0 \+ x, w
]. G5 ?" A# t: l) p
end
  Y% S0 P+ R) e* k* G4 w9 k- |# Q- }9 T
to update-credibility-list  B, ]5 D( v; _9 N( M- g! Z, Q
let i 05 t' k- f4 t) y4 ~! c- S) M% Z
while[i < people]
7 m8 ~# m8 S" ~8 K[
( Z# o8 U) U, r, l5 clet j 0
5 ]. |7 s; X" C  M& m4 Slet note 0
( c* Z' ?- s% F7 j( J  v2 Llet k 0
0 a% h1 z7 m# ^4 C" e! p# L& D;;
计作出过评价的邻居节点的数目
" q$ v2 Z7 i+ Z8 l# {while[j < people]
9 P% Q* S( r4 Y# c/ G  f* h[
1 A: p3 Q( B* M$ n% K. kif (item j( [credibility] of turtle (i + 1)) != -1)
" K2 J% W, H5 N4 [8 o( h;;
判断是否给本turtle的评价质量做出过评价的节点& P9 y3 u* g( {6 i$ Z1 ]
[set note (note + item j ([credibility]of turtle (i + 1)))0 ?" D1 `" }4 Q% r
;;*(exp (-(people - 2)))/(people - 2))]

+ j9 U% y" |% r1 M* T6 A( Q2 aset k (k + 1)2 a/ g% Z1 m. y8 F6 C
]: Y& v( `5 n9 ~) J% N% ?
set j (j + 1)* g8 j8 o2 s* t, E9 A* D
]0 h. N9 z* ~. k" G4 n5 d, x
set note (note *(exp (- (1 / k)))/ k)
0 d) _  C; p+ n2 Pset credibility-list (replace-item i credibility-list note)
2 c! m; W1 t% a% F1 Dset i (i + 1)
5 x$ \2 _8 S5 d+ K]  b" W# d# v, ^7 H+ ]) V1 K
end
: h1 {9 c% o- l' \  j9 o6 G0 X7 ]; `1 H
7 r5 S* d! f% Q, X* i' j4 `  Xto update-global-reputation-list
( D8 G, S: }8 y/ P0 C5 X2 n7 blet j 0
+ L( a8 S4 h- q7 L3 Z9 i8 T- n6 R4 Vwhile[j < people]
; y, D! s4 ^3 f% \' g( n[; @0 e* }: n5 ^9 r" l. _
let new 0" y& `- |4 j7 e5 H2 j: B, l( W0 H
;;
暂存新的一个全局声誉+ S% Y& A7 z& ^4 c/ y1 c
let i 0& e# b4 A# a* ^  x, X& J
let sum-money 0
2 m- o8 ~- A. j" E4 I1 T& slet credibility-money 0
2 S# k% k6 B  ]$ {9 Y6 r4 Vwhile [i < people]
, _9 v$ n; V* \2 Q% N7 `[
* f/ d8 I6 F* W6 J; [/ y4 ^set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 k7 X  t1 Q" k
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  ]( s' P9 B, p6 ^9 x$ }- {set i (i + 1)
8 y5 b+ W0 Q: N3 q]! @( K; {3 v- t( a. ?, t2 `3 Q. B* a
let k 05 H3 R  n1 X' ^; }' c# S% t
let new1 0
: f* W$ Z$ u5 _: Z+ Owhile [k < people]
, _8 x1 h' w3 r- }1 `[
- ]3 a0 U% o/ {- i: R2 W7 `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)
& w# o. |; L! x7 Cset k (k + 1)
& M) s5 @0 {0 O, g+ K]) B6 x) Y7 A) w* K0 L) i  G
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. c  \7 B: C2 j4 ^; I$ n& l! nset global-reputation-list (replace-item j global-reputation-list new)& r; r% x( `4 J: u$ L
set j (j + 1)
( i6 S2 K6 \1 o1 Q* g* m]: @1 b( `% ]# [6 T! |1 G; L
end# j. a4 W0 D0 H2 W0 B& ~) b
( |  V/ S" N+ v0 l5 B6 i# c8 a

0 L' _5 u7 P$ U; n. a# G$ y( j( W7 n- H# `' N* {6 \7 l$ z
to get-color
1 \4 k4 V9 \: g9 Y+ ]+ T7 \6 X6 ]& k6 n: N5 v# ^$ ?, i
set color blue

7 g3 r0 o6 G3 W+ oend
" c8 L, _7 `6 d0 K5 w. f% T' L/ v7 R) Y5 L) l5 s4 s  }  e
to poll-class
1 d9 R9 |$ e/ {# Z; M: e/ Oend, I9 ]# I* ^7 u' X6 J$ O7 R
  B6 v- y- C) N! O4 H* N1 X
to setup-plot1* R4 u. J- P, A. ~& }& h

( x9 T0 }& l0 uset-current-plot "Trends-of-Local-reputation"
. c' X- k& {3 f0 U/ a

+ r( F* ~3 P$ m/ s$ N4 Lset-plot-x-range 0 xmax
9 T. w1 @+ }% E# x6 D$ H
8 P/ x' R  W4 Z
set-plot-y-range 0.0 ymax
  p0 L' g+ x# `4 M$ K& o) y5 a
end
2 C) I7 O4 E; z! z
% t: i; m1 D( q8 W# ?, yto setup-plot25 m5 H2 t! C+ e. P; [8 @: q2 D

* ^% `, _) r6 g7 e  gset-current-plot "Trends-of-global-reputation"
9 j5 U3 H& E" u) e( O% Y
2 E8 k* Q) j# f2 c; U3 x  A
set-plot-x-range 0 xmax

/ G& U) a/ F3 l1 |1 E& A2 t3 V- c. r3 n' V/ a4 U  y, N! t
set-plot-y-range 0.0 ymax

' s7 i/ b$ W, U1 vend
  A, M/ c4 Q2 ?5 g9 R% o2 z/ f; E1 F  m) D3 B$ e& Y
to setup-plot3
8 O4 G/ R# B+ s4 U: ]7 p! [
4 Y7 _9 _' L. s7 z1 x+ qset-current-plot "Trends-of-credibility"
/ a0 |7 ?. Q, p! q8 y

' h! v# x3 V) w- Nset-plot-x-range 0 xmax

/ [6 f, O6 H  T) f; j, {1 p  G  r9 W+ X9 X, u
set-plot-y-range 0.0 ymax

$ I0 c9 [/ n  m, u; A& Rend
5 Q  a& z6 A2 J5 a# U: q- T4 X! `$ x( w% j; N* L- ?
to do-plots# v. r/ v* @" |  T4 G* @) H
set-current-plot "Trends-of-Local-reputation"+ ?9 P5 Y* C5 ?' M! G9 i6 Y: ~8 f
set-current-plot-pen "Honest service"5 T/ u5 \8 l* W" Q* K- \
end) Q: h* R4 t: H# v& d/ g  P
+ S+ Y) U; i+ p0 x
[ 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.! f6 C: y2 i. Z- L7 t

; D5 F) g% L& _: S* o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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