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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
( d7 V- J, Q, C8 sto do-business
2 C1 r3 U( W) \$ \7 H& A" } rt random 360
7 p- T+ a3 @, w& ~- _ fd 1
2 T1 A# f* w& g5 `$ c: ?  E" k- N ifelse(other turtles-here != nobody)[# S1 P2 m; d4 {3 D3 W4 m9 v) y
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题./ w8 `. d, L6 i5 I* e+ f1 ^
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    / w1 z6 ?. Z, T  C6 N$ U! l2 ~
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 x  w1 t3 R) ]! H+ [( O   set [trade-record-one-len] of self length [trade-record-one] of self5 r" C8 e, L2 _$ |. v8 I* B0 ]
   set trade-record-current( list (timer) (random money-upper-limit))) H  K, R- B$ ^. ^& ]

( Q+ q; ?) }- b2 Y问题的提示如下:
8 ?" x2 r$ u' q' G: s. p8 Z- G4 R9 D
error while turtle 50 running OF in procedure DO-BUSINESS0 ?% Q* N! o8 @$ \, F) k
  called by procedure GO
- v" X9 `2 y5 b4 {; b' S$ ROF expected input to be a turtle agentset or turtle but got NOBODY instead.( B3 P9 O3 q& q+ R4 }/ H
(halted running of go)
$ E6 c0 N2 b* V* K9 c; u# E; i( }3 H7 X
9 X3 U  |2 {2 E/ M5 l: q% [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~~
- f4 M# n* p2 ~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
; d( }0 F) E8 n2 Cglobals[3 o2 S2 [- ^  L4 |' e& k: ]
xmax0 E- Q- c: ]  Z/ Q- Z# T
ymax1 l5 d1 w9 s5 X7 a6 h2 H
global-reputation-list
3 W7 c5 b9 q  A: q8 _/ ]# ?5 i8 w# Y* ]" t
;;
每一个turtle的全局声誉都存在此LIST
+ N7 X8 T" e* H! mcredibility-list' R) F) D2 F! |5 V& ~7 o
;;
每一个turtle的评价可信度( E: U" p- Z1 Y- R
honest-service. {  h/ y, u) l3 h- N
unhonest-service
  M- z% t0 t8 Z/ z8 f' joscillation( R1 q9 ]7 S" c
rand-dynamic' C2 j) P! u; ~: K
]7 E: v. i5 N$ ]5 i7 d
2 g6 q! _$ U/ a+ L* ~
turtles-own[
& u' o' d! e. A. itrade-record-all
. x! t2 V8 Y4 `' X# X;;a list of lists,
trade-record-one组成& n- y# h5 c2 ]9 j
trade-record-one4 a) `  v6 k" ?8 O9 D1 S$ ^4 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
: c  c8 [5 C4 l" i  g
+ X! I" c) S* l2 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]]
* h) Q* j5 N4 Btrade-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]
! S5 w% h: j' w( ], m" Ecredibility-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
* [1 h% ?' J% n4 I% Q# ~$ Oneighbor-total
: a% d5 `" q/ V;;
记录该turtle的邻居节点的数目; v0 N/ o5 a# p9 g8 N' Q1 d% `  W3 ~( m
trade-time- f$ C( [, @6 l0 \
;;
当前发生交易的turtle的交易时间
3 _/ I/ h6 F& p/ ]appraise-give
6 j. u9 i1 r% n; o2 ?, s( j* ^8 R;;
当前发生交易时给出的评价  `! @7 V( u' }9 X* x6 ?
appraise-receive9 c! E! N3 l  {" n
;;
当前发生交易时收到的评价
( _3 d! i2 @- Iappraise-time
! q. k4 J2 v2 f6 l/ @;;
当前发生交易时的评价时间1 F* g4 E" A4 W- y6 E; d! m+ f
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- o0 @6 N' Y1 s* S( m% u8 vtrade-times-total; X- p: X' }! y9 I! e
;;
与当前turtle的交易总次数, j& }0 }$ W+ T- O% z5 M
trade-money-total3 B1 _9 l2 v2 i
;;
与当前turtle的交易总金额0 h7 c/ s% m* R2 V: c
local-reputation% j, m/ S, m5 F8 _1 F, v; E
global-reputation6 K0 s2 A0 U/ ^2 f
credibility
5 ^0 H4 D4 u6 U, L* _3 b, r;;
评价可信度,每次交易后都需要更新) J( Q6 K$ |4 v# F! m  {
credibility-all
( l# k: q& @$ {: ]) _" I8 K;;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
7 s$ S6 _8 b6 U$ s, z5 ]: c- m8 m) K# T
;;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, o& T- A3 `% G- s( L
credibility-one8 y- ]; R1 M  a1 F  ~# m
;;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
- g0 f2 v+ x9 B- O: \1 `global-proportion
3 r3 i2 v; a" ?  O; j* F3 s: dcustomer
% B: k" O! B& i1 C7 p5 a0 X3 Ecustomer-no0 r6 ?/ T9 p; z. v. d/ e% X0 s
trust-ok
8 }$ ~, j! t) f! g! x  Rtrade-record-one-len;;trade-record-one的长度. C+ s% c7 m4 h' Q
]
7 P+ [& h, D  f7 {, p
8 s2 S3 C" f$ \- q& L;;setup procedure
! ]$ c' {9 ?2 W9 l: Y! a6 `# c. A) X! x# ?# w5 x- z: B  x/ N7 y$ L' t
to setup) [. k; G% s% B- e5 r% Q: v

+ w: K6 V0 l% ]ca

$ U  n+ E0 A1 K# d8 g
7 ^  t6 T! x, h+ ^2 r$ jinitialize-settings
5 `+ R" _: q+ U; E. Z
# E! F% P6 C% ^: S
crt people [setup-turtles]
/ r- [8 H7 o5 F! R* j( R

$ V9 t8 V: r% o- m. w) L& Jreset-timer
: d+ r/ z5 E4 Z8 a' ~9 j

) \/ a6 N" R4 m' W1 A& l2 p! Apoll-class
1 X5 g7 N' J! Y
$ T' j/ E( U3 ?
setup-plots
" @# L: b8 ?! S

( {- r  D/ s$ e5 H" D. |: N# a8 Q2 L4 U/ sdo-plots
& W2 n3 q, m: |: H
end7 |% m1 O# V3 E& J, s
3 _( g7 e' g7 l9 W6 @& q
to initialize-settings
8 b2 N; F! B$ E- ~( R' g
' _$ h6 ?: ~" ]; k) B7 R- P! d" ]set global-reputation-list []

8 i& U3 _# L8 k7 f$ c6 U. |8 j6 }2 L1 ]- I1 R7 N; D
set credibility-list n-values people [0.5]
/ w! C3 _9 p" m- p- |) D/ F! ]

+ y! M) {5 o/ n" zset honest-service 0
1 M6 m1 q( y2 @( U* l9 o5 U, s
5 ~/ B2 u  a( p. ?2 P0 C: {6 g) Z
set unhonest-service 0

" O2 ]4 M: l, w! }% \6 s/ v2 a/ ]3 ^0 \% E1 W3 _/ Q
set oscillation 0

$ f0 `9 Y' Y/ H4 k) r% W, J; w/ i" Z) e8 S7 h6 ]! w+ d# Z. S) T
set rand-dynamic 0
% s4 ~' N) `, r* o' u: `2 ~/ Q: _; q
end
5 q# Q" C9 z( g% s- s8 w. d) k8 \. w# Y! \
to setup-turtles $ e6 {5 W$ r6 g& P2 |/ l8 b( `$ k
set shape "person"
1 j9 ?# U' E- e! d0 H$ Asetxy random-xcor random-ycor6 |( {# X; s6 ]( H4 b( @3 t
set trade-record-one []
$ i8 e6 N/ n1 D" Z
; ]8 c( X/ F2 t3 |- @4 w
set trade-record-all n-values people [(list (? + 1) 0 0)]
) l+ w6 w( L9 I8 I

7 z) ^: d5 a5 `( uset trade-record-current []
, M8 b0 N' d3 @7 z6 Pset credibility-receive []! c5 e* k+ Y8 M* C
set local-reputation 0.5& T7 z4 V; V3 G8 R" J6 N
set neighbor-total 0: T2 m; w$ W+ ]6 X! o% L
set trade-times-total 0/ c8 B1 S. t8 D: ]
set trade-money-total 0* _6 A: Y. O* a. B
set customer nobody8 ?, T# V0 g: n" N5 O% o; D# s& A
set credibility-all n-values people [creat-credibility]
4 Q8 }: t2 ~# j  @  Y9 Oset credibility n-values people [-1]) p5 D( d4 Y3 y5 k1 [- r
get-color* n) L3 K* d. b+ F
' Q- a( N' k; z7 _$ B' k
end  M# T8 F* d; Q* b3 ]

& ^6 @2 o& o; a1 Rto-report creat-credibility
* k& z4 c+ z( u" I" o6 M+ j. {5 f: Zreport n-values people [0.5]
1 d! e$ S3 }& i/ Aend- {6 P1 J) G4 s/ G6 b% x( F5 u* |  q

% r( z/ L9 @4 K/ H1 Z# O0 q0 dto setup-plots
6 x8 F$ ?) m  `* n( y7 n4 i) S* Z
set xmax 30
3 W9 f/ }8 ?0 l; k

$ B! u- v1 x" m- I0 Bset ymax 1.0
# F6 L# U# @- z
" z- Z% N7 Y! z& i6 j' Q' ^) u3 _
clear-all-plots

5 q2 s- P$ B, J# K8 Z9 d
# N' s5 b: }8 A2 ^setup-plot1
' u: B/ Q0 t" G# c; s
' R/ i& B; C7 n3 `/ H: K- y& E+ H
setup-plot2
* n& T$ {: Q2 f' m' B( N* O
# r% d! M. i1 _
setup-plot3

0 a3 c, C+ J; W, I, D- G2 qend
5 o( U  T* R9 a- h2 ]+ @* R6 V+ c7 P, ?( B3 t) B7 d9 j1 U+ {6 Q% o
;;run time procedures5 s* M4 J+ u0 d0 d: U" \% c

1 o* B) E6 X  }/ r+ X1 ?to go
2 U  g' M3 b( m+ _, g. W: [/ U+ ]- s- o3 R2 s  n
ask turtles [do-business]

  K- z  c+ J' N: H) a2 K% F; send2 Q# P; R: i! r% E3 m5 B
) o3 @. O+ t4 O# B+ z" z
to do-business
  v1 I  C' C7 q+ E, b8 r" c( l

0 L1 @- q: {6 B
% l( E0 W/ S( Hrt random 360
# Z0 o& t0 c! ^" P  G

4 ^% l9 r, d, ?! U) i1 Ifd 1
, a9 D% V4 d0 e7 ?9 H2 \: v& C2 d
6 W; [5 c8 R" F7 F- z) j2 c# B
ifelse(other turtles-here != nobody)[

& N- _, A: j, w9 d6 A
0 _& ?9 |' B6 w1 D' |set customer one-of other turtles-here
- i$ G7 T9 r+ S0 g& g/ e

3 d7 d) p+ Q) w: Y' ?7 N;; set [customer] of customer myself

" m& u, m! N+ h5 ?$ i
8 e1 \9 x5 z% s+ p) M  `5 a: Lset [trade-record-one] of self item (([who] of customer) - 1)0 k8 X9 p- h% ]! t7 k$ N, Q
[trade-record-all]of self" x4 E% Y5 Z3 v' r7 |6 x7 H
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! ~; B) b! L  o( r6 U) c$ q
( `0 l: k; E% C7 V/ bset [trade-record-one] of customer item (([who] of self) - 1)
2 W! a0 q/ r& K[trade-record-all]of customer
* \5 U- H% I6 Y# s& ]; b4 Q

4 A$ v/ D# \: U4 L, n- [) C& e' Vset [trade-record-one-len] of self length [trade-record-one] of self
" e% W' v$ `! t3 X% I
( ]' B0 X6 L7 d- R; T1 d# _
set trade-record-current( list (timer) (random money-upper-limit))

$ ?. e* l; [, a9 v
& k1 _! I% u- c' U! j+ Lask self [do-trust]/ T( X% z& ]" \( c' b/ v/ T
;;
先求ij的信任度& T2 m5 J- ?( w/ E! x
7 Y. D9 s5 c) U8 Y3 `. P$ z1 Q
if ([trust-ok] of self)
: B* G( P# x; h) ^; ?;;
根据ij的信任度来决定是否与j进行交易[
& |; x1 Z  j" X" A" rask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 U" X9 j1 u6 s$ V
$ j9 _8 c) D: f+ t6 w7 ~[
8 i1 C& s  U6 I% B

7 q: b9 W3 B' L! A; x# d% N) a" w' udo-trade

* n$ |" W- R( d' `! u+ B
; |  j0 A  m# d1 S: dupdate-credibility-ijl

( X; o1 }4 |+ D2 {3 F+ ^$ o# X, \
update-credibility-list  ]8 O( y: p6 x* K/ o

( E9 a, F1 Z; `( L5 J+ S9 Y( o
$ r# ]6 {, z0 ?; f0 z; b8 \update-global-reputation-list

6 N5 A( |9 h! j9 J$ P( k& e! Q' ^  c; f& k% _& q& Z
poll-class
# C0 Y* J, b, @. k& U' s' L) o1 }
7 V8 E( o# m9 S
get-color
- X3 Y6 R& V1 p) l+ H+ }
% P0 T- L1 f- t; e' V$ ?# R8 Y- n
]]2 o( ^/ C( \" B& E$ N/ S

- v6 n. k, H" i) H0 R# _2 E! g# R4 ?;;
如果所得的信任度满足条件,则进行交易
* F1 |" G1 t! M7 n; L7 `" F( t! S
) @" a& ~# r. U) S5 V$ l- `[
3 R2 v9 X. R' X& Y% P6 o+ O

) H- a4 V/ y  I3 v& N7 j# O  D1 Xrt random 360

$ h8 m3 v% A3 ?' D
; k! C3 ~0 m: e, q% n/ kfd 1

4 x7 ]: l5 ^$ ^, X& T# {$ S  O* u& H/ ?# y2 J3 V' |* ~% J+ u
]
, n2 K' V# w* X4 J0 M& c; z( {
" w+ G) i& D9 x- C6 i8 l" K
end
4 g, I9 m6 w2 A9 h
0 r' z8 p4 h2 O$ S% |" l
to do-trust " {, V" P1 H) w3 \" u
set trust-ok False
6 S0 {$ d' J. \7 G
2 E, u, v) M) j
5 I: Y5 N# B, \" m
let max-trade-times 0
! P& X+ W4 a1 Dforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& C; U, p* S- c3 g' w; T8 f
let max-trade-money 0
' j+ e# a) G3 O5 p+ Q- j& Rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 Y6 g2 B. @* M4 I) i0 f$ m
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 P2 M7 U4 g* F- @2 o1 s* U: v* V4 d9 b! o  d' {
6 `( l" A1 `( v+ H! P6 L& ?$ k
get-global-proportion
6 x5 C, p  }% v5 M# Blet trust-value% P3 L9 P) k# I+ E8 w: E
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)

- M, O/ f, i4 K# y; g: W' X% Jif(trust-value > trade-trust-value)8 h+ _' O3 N6 ~
[set trust-ok true]
0 L; y! I- }: @3 o8 s/ Bend" O% X, T) C  Q+ k

: n. q8 p$ R, gto get-global-proportion
: M3 [$ E. y2 ]. s* q4 A  aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" o7 F  g! N$ V3 n" g# y[set global-proportion 0]* m7 c, N& q# L( K; G
[let i 0. v' n7 @  _" x8 f
let sum-money 0, z* w9 N; N0 Y1 F  `  P
while[ i < people]( h2 A0 g+ D0 Z+ B) r% T
[7 C/ R  G+ \1 z1 e
if( length (item i2 ]1 C& u% B6 \+ V+ x" `2 P2 w
[trade-record-all] of customer) > 3 )
* v+ C) T  H; n
[. R% E* u$ s0 M3 t
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  `" X7 T8 s# Y7 h# |" O
]
, G8 S& c. S4 u' ~7 T/ ]0 []1 C( Z9 x; j) l, s; P' ?/ O8 S0 Z
let j 0
, }2 W: N3 E0 S( P2 Y* `let note 0
& R4 p1 D/ u" A4 y* G& W; x' fwhile[ j < people]8 d; b' g& c" [5 l
[
$ g* C( m" w: b) Z* Iif( length (item i, l" v0 u; n' H! c: Y( X/ e
[trade-record-all] of customer) > 3 )

0 T9 @4 C2 j2 Z6 w9 o6 d0 R[, C: V4 ?. e6 R# s+ n3 Q. {
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), W5 X2 Q$ I! w) n8 T
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ x% N* q. }6 n: q
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 G9 E2 z/ m  J]- |. V# `) t/ N/ V
]
% E/ h1 `0 Z9 {, _3 Bset global-proportion note/ V- A4 [9 Q' l5 ^5 ]5 c" n- @+ W
]$ z% D& b9 t2 y
end
& Z- |# M& t4 S# ?: R, D% }* E/ B3 L' x, `+ w0 ~+ R
to do-trade% }7 h8 x2 }% n$ x2 A& F- t7 M; ^
;;
这个过程实际上是给双方作出评价的过程
8 a; r6 c% ?  U4 l) xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. `; n5 F; p3 K. a3 l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% o; s' x3 _8 n; ]; B$ ]. o. Q
set trade-record-current lput(timer) trade-record-current+ A3 U2 k. s! t$ ]2 g; w! M
;;
评价时间# z9 p6 t, B. G' u. n" m* X1 O8 j9 s
ask myself [
- Q! p- P: ~. d5 r; rupdate-local-reputation
: N5 H6 K% L/ R4 B" iset trade-record-current lput([local-reputation] of myself) trade-record-current+ x5 D2 H. k" O3 Y- S" M
]2 z" j" S' q5 @# E- D! A8 j- Q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' a6 b/ g7 Q5 U+ i) G( W5 ~! _. X
;;
将此次交易的记录加入到trade-record-one
+ ~5 U: R( \" a+ e( r5 n3 Q# L& Hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 a8 T2 t' A: q; }  j% s5 O& ]. ?let note (item 2 trade-record-current )
0 x1 I+ k- o# e0 dset trade-record-current
0 i0 g0 Q6 K- E! D(replace-item 2 trade-record-current (item 3 trade-record-current))

0 P/ E; [" A, V% [: ^set trade-record-current
) ?- [  V2 l) B: G8 C! w6 h(replace-item 3 trade-record-current note)" W' Z4 t% @! K5 K
1 w5 g- ^$ w! m8 i, d4 [/ {" k% C

" M( E( o( _* I3 m4 w& m* @ask customer [
  o6 O: {% i  q; d$ l8 Wupdate-local-reputation
; n+ X0 |% H2 _' b# k9 l$ ~set trade-record-current
0 I6 L0 I& P8 c(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 v3 a, z0 }6 G. C* O& }, i]6 a' j/ r, G) R

% x. [! \4 A+ C5 Q: W
$ |4 F+ N" J1 F' `. J* e
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ d" S+ w( R8 a8 S+ `; B+ L

) C" K, a# x+ E% o0 u" T2 V( wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); q  `2 \* \* p+ a5 b1 J
;;
将此次交易的记录加入到customertrade-record-all
6 u& u5 P! y) i! K/ ~4 ]end
4 M( d* P2 H7 ]
9 k4 z8 S$ u7 Zto update-local-reputation1 c& p% e% F4 S2 a. Q% `
set [trade-record-one-len] of myself length [trade-record-one] of myself3 N: p, C7 }" T; L& k7 T9 T
, L2 x2 g: l' e: [( Y+ L
+ f* f6 o: @2 ~3 M% S% b
;;if [trade-record-one-len] of myself > 3
# C' Y/ F! G; ~) P4 {: S" F
update-neighbor-total
# U# O0 \" {0 R& {1 ?! g0 q;;
更新邻居节点的数目,在此进行
1 r/ l1 I& p- l; z2 U+ y7 n. }& Ulet i 3' N+ x* b7 s/ i1 V) g$ ~& D4 E
let sum-time 0
3 s' k) T0 I$ ?1 ~/ ]while[i < [trade-record-one-len] of myself]% d8 G) N. i4 P8 I
[8 t7 t* q3 D( T# p% w
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! F% g: l! p2 |; x1 }* Q% E
set i
: x4 b! g% l5 A+ N* ^( i + 1)

7 i& @: i7 n0 H/ G+ \( H]
: }4 A- D2 V8 y2 F1 i3 Rlet j 37 q0 a1 g* U! H' {2 E
let sum-money 0
" C" Q6 u3 \' i5 vwhile[j < [trade-record-one-len] of myself]
' b' t9 m( ?1 M  e# T# N. g[
  X) f: V# i8 b/ ?set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)" n4 |5 Z8 Z" |6 g. R5 k) w: [
set j/ [9 Q$ n0 n+ J2 ]1 s& q; K
( j + 1)

6 ?! I& W4 \, X" {. ~' G( Q/ c: u; F/ @]. Y8 M  [3 O* \
let k 3
) K; g: d# E5 C4 |( z" `* Plet power 0
1 S- B+ j0 F$ R  }let local 0) C. q$ h# H$ M) |% @% |* M
while [k <[trade-record-one-len] of myself]2 p( W4 I; n* [; {
[/ s% R+ W7 v8 q" t7 Q7 J. \" s
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)
8 w! J* N. x- r$ ~/ Iset k (k + 1)
5 b5 [. c7 p/ u7 l! j! b, Q]* D4 m' ^( I" w: w
set [local-reputation] of myself (local)5 h+ G  h0 o* M* \% H7 g  q
end6 N" z& R3 i0 p* a3 ~% X0 f9 e1 S! O

7 c- J3 B0 E! t7 B1 Cto update-neighbor-total
8 H9 |+ v: c' r/ m  T* ~
: X5 ^2 ~* o$ I9 U9 c  P# y- e' ]if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ r4 A  s+ l3 r5 e' D& R+ f: \) v" z! s5 H

5 d) [1 d+ n1 B1 mend, Y  R3 n0 X2 {7 I, s3 t8 ]) m" ?5 ?

% p8 f3 [( R& i/ b; F* m, Vto update-credibility-ijl
  Q* _& R: O1 ?( S2 S: R4 D& j- g" [2 s4 {8 B% Y6 m
;;
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。
* s  x1 v5 D( }let l 0/ U# e* K" i. C  t3 B# V( g% j
while[ l < people ]% A# W1 f; J" V. N4 ~
;;
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: ~* R- \$ f4 }1 B
[1 @* N: o- d. k; y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 K% m8 O8 @9 U7 jif (trade-record-one-j-l-len > 3)
4 o* T/ c2 E6 ^% R[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" y$ M: }  P4 z4 W! z6 l) c
let i 32 n2 o" z) G/ R" D! X* p
let sum-time 0
+ Q, h* K$ N; `, L9 s& awhile[i < trade-record-one-len]
2 f" E4 h+ _- E8 Q' l% Y. K[
& c% m- D& i! Fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* }6 F5 X9 p- j( o. J" J8 J. O, P
set i. T( N5 ?7 H8 W! g" T
( i + 1)
1 @" p' K, W) B9 ~9 a6 ^0 r
]
/ u3 s2 Q1 b7 c  ~% _let credibility-i-j-l 0
% H& g. D9 U9 `/ T( v- q- R;;i
评价(jjl的评价)
* l4 B6 ~$ _0 Q% ilet j 3
) @4 @( e5 o& @" G3 ]2 d4 `$ |let k 4  H+ Q1 p  Y. E' e$ \" I$ y1 ~: n
while[j < trade-record-one-len]
- K& t1 v. t8 X/ W- `5 d8 P[
. _6 _$ j$ G# j) N8 l! z4 B/ n3 g" iwhile [((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- T0 j% l, D# z# Y' b' B9 p
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
: r. x! }' o8 p) Nset j7 Q: G. K/ y. z3 Z4 `$ H
( j + 1)

5 _) Q8 _9 s  t0 @5 y]+ y+ |5 z" I0 m* V
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 ))2 H1 ^4 R  S  @! L) _+ {5 Q
& K& l( X+ O: `

8 e5 B: Z! f. i/ c" B8 ]4 g; o/ g: g- qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
1 V1 I, T" Q0 ]$ z# A, Z5 x;;
及时更新il的评价质量的评价  j, U8 V8 v7 t
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ B- }% o# }4 Z- z  j, x9 g
set l (l + 1)
! R3 |! ^! E9 ?]0 I) Z% ^8 |( O% G3 E; d
end! C+ X( {9 |% C  \0 v- ~
, S' m7 p# H- l
to update-credibility-list
+ n* m/ @$ Q" E$ m4 W3 Glet i 0* k  I( U  y5 l  k6 L
while[i < people]2 S  J  V7 p0 ^1 @! W) e& W
[
8 E3 X% [/ ^6 _* Q, ~let j 01 `  ~& L' A3 L0 [- z1 d" U1 T: q; r4 T
let note 0, v$ C% ]6 ?2 Z; r, s! [
let k 0; t  D) b: x4 T8 s0 K  `/ i
;;
计作出过评价的邻居节点的数目6 v* \! e9 v8 m7 ?5 |9 W2 ~6 Y( \0 d
while[j < people]
: b# O: C+ {' \[# m" X. U, A" a! k; v1 M
if (item j( [credibility] of turtle (i + 1)) != -1)6 j3 u! j( }, L& g
;;
判断是否给本turtle的评价质量做出过评价的节点
& u% a: F5 r+ _[set note (note + item j ([credibility]of turtle (i + 1)))1 I) g2 l  Y& j. q6 Q% @
;;*(exp (-(people - 2)))/(people - 2))]

" w. b8 Y& q! U2 d" c# Xset k (k + 1)  H* a* ~3 `# Y: W0 i
]9 I" B: K1 P7 g4 _% z: x
set j (j + 1)
3 b1 h2 D4 t8 G( w0 g9 A+ C]
! E' w! f, u, }. H/ Hset note (note *(exp (- (1 / k)))/ k)
9 w5 B' B# y: qset credibility-list (replace-item i credibility-list note)
8 q: Y4 X/ a+ `* U: f( Mset i (i + 1)8 \" Y- `  H2 s  b
]- F8 V6 g. n2 e0 O, l. y1 [
end# a, K& ^+ s# Y& h, C# R2 g
- }$ A( s: w; b2 g, ]
to update-global-reputation-list
' ^& @. W0 B3 `- u$ e6 T3 G( C7 o9 Qlet j 0
7 O8 q- ~0 Q8 v" N; V6 ^; |while[j < people]
) G  l2 C! u2 q( s* ?4 b% l6 O[
/ d, Z& f7 M% n/ ~. |let new 0
6 c. i9 j9 U- B' t$ Q;;
暂存新的一个全局声誉. i' c; Z4 D7 V- i  n& Y
let i 0& A3 h. j4 I/ L6 `' g
let sum-money 0% n2 l/ j1 d5 y8 N) p4 S3 X
let credibility-money 0* X: V1 ^6 {6 g2 Q8 _2 N
while [i < people]
8 `2 r" K6 }- B& Q# O* Y[
# ?( {. e; ^! j, l. m1 Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): Q: N6 {" w! T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% M& W! k7 [6 v4 _4 z4 q5 Tset i (i + 1)
: U5 L5 i& j4 n7 u" M. N]
- I. ]( c7 |$ v2 y! H  K" r0 |let k 0
' k: _' F; K/ t5 E* P; D" ?let new1 0
  x* ?! x# a3 p9 G) Nwhile [k < people]
! g+ V1 g& Z) o0 U[
3 k. A  \$ t5 i" e" e2 _5 u1 U  Fset 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)
3 n5 n2 Y% D8 C1 {& j* y! Pset k (k + 1)3 L( N; m: w: k# J* e
]
9 E1 u! J. C# T+ z$ |( Qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) c( x9 v) Q1 ?, ]" y5 g* I* E
set global-reputation-list (replace-item j global-reputation-list new)
4 t1 Y# Y$ V/ n7 S5 e# oset j (j + 1)3 M5 a. ^! p% x7 D$ _/ F8 {
]
7 v) Y: V* C. P4 Y0 L1 Lend, K  {8 d+ V: o2 E, P& |( }$ E
" ]: E. K& k8 f& B, h  _
# @& o% D( p, P3 g, h$ K" p

0 \; x7 }' \4 i( jto get-color
9 o( u. U6 D) y; j3 q% I1 H  x9 q5 T* \& L, G. O2 _' b0 a) f
set color blue

8 e) P: D# k8 }( }9 Zend
$ O+ s& g: D1 ^% \! w2 e$ n
: C3 A; U7 `* v; j4 `: j+ _4 X5 lto poll-class
3 F6 G4 |8 a* {' Send: ^# E9 o) \+ w* T3 j- a+ d

! \6 J- @1 F- D1 M" A9 A6 Jto setup-plot1
" r, L3 h$ _/ i5 F. D; I- z5 I1 ^! o, b9 r
set-current-plot "Trends-of-Local-reputation"

: |+ V% A6 Z: G( ~" {
! q$ s' D1 ^# t1 E* Zset-plot-x-range 0 xmax
' l8 i# a5 e3 B9 V

4 I1 k" \$ y+ }  Y) S, Vset-plot-y-range 0.0 ymax

% e4 q3 X% Q/ P0 e$ [, a. O4 kend, n/ ~' R' y& Q5 l. V1 S
8 J7 ~- _+ _* H
to setup-plot2
1 h3 m2 C, ~4 |4 e" ~4 e
, r5 E( J( x% ^. X- g. Y1 Iset-current-plot "Trends-of-global-reputation"

3 Z- [6 Z, n- m; W) I- ?; u0 s3 b7 X' _5 U2 g+ n9 ^
set-plot-x-range 0 xmax

2 U' ]* ?% r5 r' J6 M: M, w6 p3 @6 A* m  P, p3 c
set-plot-y-range 0.0 ymax
& i# k+ g6 w6 I  ~4 O2 a
end- L) M7 B' l/ c
5 F3 z1 X& h2 {% V" u
to setup-plot37 e6 J8 w' }0 z: `; o2 U6 {
) L# n/ X- T; b2 c. Y4 I5 s
set-current-plot "Trends-of-credibility"
8 e6 Y# O- e# }0 f8 R0 J8 q

% W" V4 G2 f( Q/ t( l, x# Vset-plot-x-range 0 xmax
. L" _& U' H) Z: }

4 [) Y! t9 l; i1 Pset-plot-y-range 0.0 ymax
1 H4 l3 J8 t6 T; a* B/ b% x
end3 Y3 h, _6 J, E/ t2 I
" @) H$ h$ C3 E5 ^) {2 I
to do-plots& m1 ^) m1 l' J
set-current-plot "Trends-of-Local-reputation"
* W& j! P+ |4 B% k. Eset-current-plot-pen "Honest service"
/ w1 E# o+ O, X% c& h& kend
: @9 w: U" t; q' x. i- D8 s7 \
+ x3 K9 }( v3 C* \* P, J[ 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.
! ~) K" I, ~+ Q- n8 @( U4 _4 M* V$ M: g7 H, 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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