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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:' d  v# P5 h7 w  B3 S6 U
to do-business
- Q% i0 h! D+ X$ \2 b rt random 360
5 }, q! M4 [& _6 |  { fd 1' |: a$ x1 L9 h6 [' Y7 z% U/ [
ifelse(other turtles-here != nobody)[
" W! j( ?: j2 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.
3 [2 o! s; U6 Z  \( t   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : _% T: W8 N  c. F$ Y) C. \
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* Y' _  c" f% f, k7 l   set [trade-record-one-len] of self length [trade-record-one] of self% g  E7 w, ]) k0 `+ e/ L1 U
   set trade-record-current( list (timer) (random money-upper-limit))8 {2 H) q/ x; X! M* S& W, W5 w; P  |
) G$ P0 {0 Z7 g4 L7 G4 e* {  s" k" H
问题的提示如下:# |; t7 L! E) g. g# |% I' t& x
( G: t( B$ N. F9 M
error while turtle 50 running OF in procedure DO-BUSINESS& u" M% d5 @3 v$ D, d/ ]( K1 I
  called by procedure GO) T8 M: h( {5 U( i, @- {7 B
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 p' S+ M- H: U
(halted running of go)  C- u' S6 C2 Q; F
4 r: G& l; `+ {+ k; o
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~~5 U/ P) q8 \4 L/ T  E$ U
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$ l7 d, g' s9 G3 ]4 @: x3 ^
globals[* o( [) a4 I7 J5 r& W
xmax; d3 K- i! ]; C
ymax0 p8 t* e5 w& ]+ Z
global-reputation-list
0 W8 }; G0 f3 \* ?; Q0 E# n. X9 d& c8 A: z2 n. d% d! Y& g
;;
每一个turtle的全局声誉都存在此LIST
5 @8 l& w% [2 W! Vcredibility-list( {* c9 E; T+ N9 K8 o, \5 C) c: U
;;
每一个turtle的评价可信度
$ r" n' @+ o! r2 o/ fhonest-service
) y6 L' c3 }/ U+ Gunhonest-service: E$ X7 J  @3 D. e: k
oscillation* |1 e7 l0 u4 s  ~7 x+ W9 n& G
rand-dynamic
' \8 k% R/ O; k) u' |]
# l, L# J1 b7 }6 [. l" u' [# F7 D$ b" @  X
turtles-own[
8 S( e% u& m& k. W& \trade-record-all
; U) c- T; K; n8 N  F) d8 s;;a list of lists,
trade-record-one组成1 E, c! s3 O- Z, _2 ~
trade-record-one/ i+ P( |1 D1 C6 F3 c9 S
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! ^8 k& E$ R" c0 q& Q) P
; e) J1 ~# I  N$ Y! h( q! 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]]. P3 W$ ]6 b1 ?! U
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]+ {% ?! O/ }" n: k
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
2 h7 ^& x$ J/ Jneighbor-total
5 ?5 }4 n  x, ?5 S/ @7 ~. h6 i- o;;
记录该turtle的邻居节点的数目( r" f* B9 D9 H9 O( Y2 Z4 d+ S  B5 T
trade-time2 C0 H0 }0 R( V9 h; e3 O
;;
当前发生交易的turtle的交易时间& z8 O4 s* D/ l
appraise-give
: V! o4 K2 _5 a) f3 i5 E;;
当前发生交易时给出的评价
3 P# @% b- P6 G+ Yappraise-receive
3 I0 \, l. U0 G; ?;;
当前发生交易时收到的评价
( Y, k  l" d7 G7 I1 x4 M& Rappraise-time
, F4 t0 a+ z; \/ m( M;;
当前发生交易时的评价时间
" j- T  \+ W5 _; nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 v8 h* u. B+ l1 X" ^& V8 i1 Etrade-times-total& L+ Z( F4 U6 W* r) z" k
;;
与当前turtle的交易总次数
; k$ A8 A+ ?6 ctrade-money-total
  W% ]4 Y: k9 G0 v8 K' v9 B;;
与当前turtle的交易总金额+ f/ @* o# C0 O! P: u; M- c
local-reputation3 b2 g4 C' h' {% U0 a
global-reputation! [" h& a5 B! E, b* X: {/ V2 c
credibility
7 P8 ]7 D6 z' x) a. X;;
评价可信度,每次交易后都需要更新4 P+ P' Z: M1 f9 B, B
credibility-all
8 @1 Y6 I. i( J+ i5 U5 a; `! n;;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
, \; z6 L" ]( Y; J9 `" ^" i2 U/ R1 y, I8 X6 I; F5 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
/ t" g1 O# [- g2 ?credibility-one
* V8 c- W& s* s3 n;;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
. W" x: O+ k. L3 |! Xglobal-proportion
) M4 _: o: Z' X3 r7 ?customer
" R/ A) q8 c0 L/ g9 p7 ~customer-no9 N" y+ k  _* h$ K- M5 C
trust-ok
  f/ h2 h) B0 m; \# \) y2 Dtrade-record-one-len;;trade-record-one的长度
0 f1 H- u7 L+ A; q* W  J7 P]
' O8 \9 {" J$ w9 T7 B! u& h2 }* H- B# p! ^* ~* i6 W6 R
;;setup procedure
& Z" f& J( l4 Y
$ _/ r- E. x# q  r- P7 ^5 dto setup' s6 {+ p0 }0 Z3 G$ D. \3 y3 a1 X
$ V2 ?  @1 s: f; s6 ^4 V! h
ca

7 U' v3 L! B% v2 J' a' r# Y  \9 Y0 d# }2 u+ }
initialize-settings
+ Z& k6 j# L+ f2 N' [- p; r

6 f' U+ D, S+ j4 @4 ]6 {( \% fcrt people [setup-turtles]
2 r( y  w1 ~- U+ C% a8 X

# m5 _9 G; R$ Z! B, ireset-timer

  q( z* }" Q1 m- C& f* J8 }
3 F* k6 o$ w7 \' \) \" b" Upoll-class
6 V, V& G8 w. w0 ]9 f! [! U9 W

4 C: c9 u& l3 \) }" lsetup-plots
" A( d9 G: X/ a" C# ]' |6 K

1 ?" D- d7 V# P3 g2 C" o- Wdo-plots

- r* [3 V# S. E, }) Cend
- F7 p8 ^% w0 H) ]  a+ @8 w% ~% C8 A
# O& N* m" O( Y6 ~: ato initialize-settings
; w& d+ b) s; }9 P6 R$ t5 _! M, G) T/ V% f
set global-reputation-list []

4 a8 O+ J5 n+ R7 c* @( j/ t5 W
( y; l: ]$ o% n; i2 C* d/ f3 o& }set credibility-list n-values people [0.5]
$ b4 K" l# g& J; g

+ o; c* c' B8 n# t) j# m% {set honest-service 0
' ~) l* m0 ~2 C% j6 e

- v8 ~# h2 R2 O/ ~) L3 V* A% eset unhonest-service 0

- @/ g7 N8 d, F' I: ^$ w2 e4 m0 e: P
set oscillation 0

9 R; }/ p  A: i5 m' O! l  b. X1 x7 S* P: X
set rand-dynamic 0

5 y/ j- H& k& ~2 B1 g7 [3 G5 Dend1 F( T! x1 u$ R0 _: m+ u* P8 N

+ O5 G9 U$ a/ I9 fto setup-turtles ; o7 H3 H- B2 M% Y; R- A8 V' Y
set shape "person"2 l1 A0 x' M' R. X0 J& f0 k
setxy random-xcor random-ycor
9 r2 r8 C! |+ \( s9 q* gset trade-record-one []
$ T: _+ r' ]0 W0 u8 [
% f4 O4 ^+ [5 d, ]+ y, K
set trade-record-all n-values people [(list (? + 1) 0 0)]
, `( D3 q9 K! A2 P" \* ]' f

6 Z1 B1 u; I8 H% Sset trade-record-current []; O; S7 d0 j; C- a$ r9 X
set credibility-receive []" m+ A# P2 i6 g2 O0 D1 r) @
set local-reputation 0.5
2 Z& Q% s: h. W5 P+ q  {: T% Nset neighbor-total 0) K9 {, p! M3 }+ k+ e# \
set trade-times-total 01 g7 s. J% h0 M7 H
set trade-money-total 0' ?% @/ v/ n+ e4 U. W* y0 O
set customer nobody
* k# n: J& T- H: x$ S: j% p7 uset credibility-all n-values people [creat-credibility]
. H: _/ W4 K, S# g1 W  mset credibility n-values people [-1]
; b8 @0 w# Y" e( g! zget-color
* U/ Z9 B* s0 ~7 c0 C

# ^! N) }, V/ d( J* V# [end
4 j+ ?9 q5 j: `2 n  _8 q' [
1 |9 o" L' v: [: q9 i$ n, cto-report creat-credibility  O0 N- t8 u$ b. H
report n-values people [0.5]
4 x7 v" u3 D0 r0 U" Y1 `) Y# dend1 s: [- {7 @- c! q5 r" F
, r4 }' e2 Y6 J3 B/ F7 f1 n
to setup-plots( t7 n( B& ]7 n, @; C5 K) g

/ r8 \! L" `" ]! }$ n5 e- {! Pset xmax 30

- e1 A3 H5 ~. }2 W# l: Z
/ M5 C' d) X1 E5 o+ a# z( q  ]/ G3 yset ymax 1.0

3 H. m$ z6 i, c
" N) r6 X# Z% |6 S. V! p4 S2 d1 Jclear-all-plots

1 }0 w0 P+ W) a. z3 k% `5 i' ^7 p" M
setup-plot1

& J( y/ k/ p. m4 k2 \
0 O& r  [  g5 q6 M1 U' |) Ssetup-plot2

3 q. ?8 O3 f4 S& C- \; h/ H3 C3 |- z' l
setup-plot3
* B% U8 ?6 O0 z0 W
end" H6 t7 a( |# v) F( y

$ J4 @, P& e- S% B4 X9 M;;run time procedures
1 e/ s. y; c" q+ W
% E: F6 l5 z2 p: F; U6 fto go
0 ?5 Z4 Z2 `  {1 Z7 N' J! l, J8 F/ o) Y9 ^. e) K
ask turtles [do-business]
/ Y8 c5 Z# K1 C- N& K3 t
end
- }0 T( g: p$ K2 k
4 e9 M8 Q' _6 I$ v0 Y: d) t5 \to do-business * F, c' \  W5 g0 H& ~5 F& v. n

0 s% }& X) I' M7 q0 \" r
( o0 ~4 {2 f5 ort random 360

4 o  u; |6 [5 t7 d' j6 c  Z9 G1 E+ ~) N4 w
- j% ?  c) @$ B9 ]+ Hfd 1
+ ^) J; M" E+ Y$ x6 Q

: [, B) Q/ a$ M) S: Kifelse(other turtles-here != nobody)[
% G- e3 B# _) Z
$ f9 [# J6 C4 X' L8 s! f5 J( O
set customer one-of other turtles-here

2 M' s3 }- w' }! d' s' q. t9 H) M, z
;; set [customer] of customer myself

& f/ d! K% W6 f
8 C/ R" v9 T# ]& r- E' Vset [trade-record-one] of self item (([who] of customer) - 1)4 U2 `; W( u, Q" \
[trade-record-all]of self( L" T/ U" x) {/ K) h
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( O# f7 n" J$ x$ D* m0 B5 w. C
- T+ B0 c: d7 b$ K3 r1 M! b
set [trade-record-one] of customer item (([who] of self) - 1)
: R6 t5 e3 t9 S2 U[trade-record-all]of customer
$ Y' u) E: g, A3 g

4 p3 n1 Z- w( V0 Y( a4 rset [trade-record-one-len] of self length [trade-record-one] of self
) P9 ^8 O- {) ~6 p) k& w3 C6 Y- X
6 C# b  w4 V+ l* x; w
set trade-record-current( list (timer) (random money-upper-limit))

( E$ n7 }- `, ~  t2 `6 h% f& V! X! A0 `5 X. p- o% y
ask self [do-trust]# r% w4 E8 P* c# s2 O" h
;;
先求ij的信任度# k. x' R4 h" [# S) M9 p3 H
1 f# Y0 ^! b' q+ `7 G
if ([trust-ok] of self)
* r' F" d2 {2 Y# B& T;;
根据ij的信任度来决定是否与j进行交易[6 p* S' M) O$ _$ [' v8 y. g
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  {; e+ W4 _/ b5 I) u
6 }  V- O0 O, Z
[
* R7 k" E$ A$ k  D
! i" S' o9 \! h1 z1 d. y' n* k
do-trade

1 _/ R* D: i( T) ?
) |! g4 D: m# H5 a% d; _: O% Cupdate-credibility-ijl

3 L9 y& P! t5 G+ k5 i
4 y. c0 v# u& Supdate-credibility-list" h* n- s* l5 j; H3 Z/ V8 r7 B' X7 H
  [! G9 _7 g2 I) P
* H: a6 ~! @" H: J3 I7 B' X
update-global-reputation-list
# V- \. Q5 X7 G* K  b+ b

5 I7 w1 r. j$ ~& n+ kpoll-class
2 k- _# E4 ?& @
3 F0 n% W  a/ ]7 {; q2 s
get-color
& p% m8 s; M+ ~$ K* T, e

+ x5 u5 V& \5 e; u/ C+ x]]
3 Q; z) W8 p0 [: C% A( y
- H/ ?4 L4 ?) ^& g8 B;;
如果所得的信任度满足条件,则进行交易1 M0 m: \* ~& g0 R8 [: T. T
' \/ b% k3 Z4 P
[

/ }% \' k1 W' \1 S1 W  ]/ L1 a  E6 J0 y' D; {# y* ]% G1 s  W
rt random 360

$ L* p7 N+ F! H2 x+ N& V+ x
' I+ j% m4 S% G% B5 Pfd 1

- F4 U/ F+ H- |2 z, _9 ?3 R4 t# {" o2 m7 k. `4 [
]
9 F4 C# D+ Z; P! V( x4 g
* M5 q5 H! v( b: i& y5 G8 v0 T2 _
end

7 b( @: P, g* P3 B. _6 H
1 A$ @' U! M8 @* j7 @, |! L9 K8 Y1 qto do-trust 7 X( S' p& A# ^8 z
set trust-ok False
' P1 V6 f$ y! I+ S5 |8 O
9 G6 I! |: w( z: W; {

. `# |% r: L$ n* D4 g4 {let max-trade-times 0
: @3 X& n' E; [7 x  Sforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- ]  o) }; ?; r
let max-trade-money 0
8 c1 _1 f- r2 Y" v7 oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( {6 V! ^8 n9 @% Alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% O: i8 w1 i; q, u! w/ M- _! Y
& y- S0 _; K  q: _$ M% p

3 r' \& w; o$ @8 J, |+ ~get-global-proportion+ ~! j4 g' ~- R# G5 p
let trust-value& Q6 m8 f  U  C
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& U0 v4 d0 f" B+ G3 b( J
if(trust-value > trade-trust-value)
9 s$ F/ J! x; Z5 j[set trust-ok true]3 g- M$ I! x3 a/ I& W% j
end
- A3 F; n1 m8 X* i: R
! a) ?. ^1 ^5 I* O: X1 H1 u  ito get-global-proportion
3 w# t6 Z6 V6 |- }4 A- W  z) q* Vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 X- y6 G' G6 l( ?0 ?  K[set global-proportion 0]
& N9 S$ Y" t" N$ P! F8 w$ Y[let i 0
5 U. U# b6 u( ^/ w' O! }) L- P$ q% E. Glet sum-money 0
4 {- @5 F4 N1 awhile[ i < people]
: J" c4 w9 f/ _0 t- r7 C: M[
5 a" L8 j3 Q- E6 w" Vif( length (item i
6 g- ~6 W. `8 k- l) f[trade-record-all] of customer) > 3 )

" D; Q8 ]% B& L1 g' D; X[8 @9 `: ]. P7 C2 }0 t5 {  u: d+ h
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 T5 b3 u+ p/ P9 v% R+ e( O& @]1 v0 N; |) @# Q# E1 w
]. o  T0 N9 u! n; H" n
let j 0
+ U  w( r# ]3 Q3 o" |3 N) flet note 0
7 W( S* e4 i+ `" `while[ j < people]
9 Y6 o3 a' z  ]/ \" A1 `[
! l! U' a  R' R" Wif( length (item i9 Z6 R# D6 W. M- E7 Y+ T
[trade-record-all] of customer) > 3 )
: O7 `5 k- q2 H$ |. g
[
9 Q% _8 h- N8 N1 gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( f9 A7 }0 s- Z5 {/ z+ B! ^[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ j* t, O' r6 v* d! [: g  o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 a3 R; k6 [+ _! w
]- T$ [3 A4 ~! l$ b! A( n
]
) E2 F; J2 b1 k6 u8 P$ D# Tset global-proportion note+ Z6 {) i$ a+ [- {5 p# m1 f
]0 ?& h$ A1 R. h' H0 s- P
end7 b' s& `; w2 y+ X0 y

8 M$ |# b/ k, K9 w5 Dto do-trade( z- k/ H2 T+ D, w+ M0 a. g
;;
这个过程实际上是给双方作出评价的过程9 a/ z" w% ]; W) h- Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 q. c1 @; y1 x8 Z+ i1 ~. P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 g! U9 P1 ~5 I4 T  p& eset trade-record-current lput(timer) trade-record-current
5 _7 z/ u' B5 v; [;;
评价时间- Q! O6 ?( p% l) l1 D5 F) j7 F
ask myself [
& f, q* Y! M% ^7 Mupdate-local-reputation
# j5 M& I# {& O! H  `. ]$ @4 D% Mset trade-record-current lput([local-reputation] of myself) trade-record-current/ {: r9 ?! C% C2 D' ]! G: ]
]9 r2 v; Q$ I$ @8 C; Y; }+ \6 f; O
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 c% k) \7 @3 ?2 i, }9 q;;
将此次交易的记录加入到trade-record-one3 j- h+ z1 X4 }
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 P  @8 X8 H1 {7 v5 y" p# ^2 E
let note (item 2 trade-record-current )6 E+ G4 Z  z* q3 U
set trade-record-current+ k: N, U) j) q2 i) b& L- E* x
(replace-item 2 trade-record-current (item 3 trade-record-current))
' P! k' E" F. o# N4 W% L& Z
set trade-record-current
; ?+ F; |$ H/ v: d+ O9 ~3 B+ n(replace-item 3 trade-record-current note)
& f1 O" X( V7 t; D  b, t& g! X' |
( ~+ h; [7 B6 ~  x
) Y8 v  B# D$ Z) F$ Z: }
ask customer [
0 G2 a% y: ?# I) \update-local-reputation
' y% G# |  f$ s9 v' Yset trade-record-current& p) L  E9 d5 I8 i3 |, \5 y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 D$ g6 B. V  [# @2 g+ O
]
: X( z4 h0 i$ W
# |8 W0 [  E7 M9 w* M
$ f/ a4 c$ ?, f/ C
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 [6 S7 L; V' n: p: x8 O& z& T

. `4 j# {- m0 R; I4 F/ Cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) y& f" e8 F' b) w; h  Q. ]6 m
;;
将此次交易的记录加入到customertrade-record-all
1 |: n; D0 O6 ]  r+ b3 jend
, l( @9 P3 R' N6 }- c% J* U
) V. j- [0 b/ Wto update-local-reputation
/ H8 B2 ?, }7 e/ ~set [trade-record-one-len] of myself length [trade-record-one] of myself
% u7 {; E2 [3 b! K0 c9 S' P" J9 a* E% w

' o+ V* x4 ^* z- F' y0 t  m! F, m;;if [trade-record-one-len] of myself > 3

( E" _# [4 l( K- m% |update-neighbor-total
" L# f' [* F# z9 }# c. t;;
更新邻居节点的数目,在此进行: ?# r2 k8 j* Y& C" g% g& |8 ]8 E
let i 3
. [) Y9 S  G: j- [" y' |5 T# t& klet sum-time 0; \2 |' [( G8 q* q# h# ]/ v8 j
while[i < [trade-record-one-len] of myself]5 ~; r9 ?4 ?$ M+ g8 R$ h, G& j. v" ]+ r
[
0 d) l' W! I- E4 c/ Y( Yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 K) O8 Q. F8 ]8 hset i2 n# c  M2 a; K  p
( i + 1)
! H& f! \% a) w5 h, q" k+ H6 d5 K% b
]. I, Q) O* }5 ?* V3 L& T
let j 32 j0 W! u' h5 b; F
let sum-money 0
! l3 \5 q  D3 |$ P. I1 p5 Q/ kwhile[j < [trade-record-one-len] of myself]6 |8 |8 O$ d, {5 c7 w
[1 E8 R% X& C6 S6 ]" {' M8 S9 _
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)4 y5 O; b/ b6 l; U+ E' [) i
set j1 H& f2 K: p8 [8 Q
( j + 1)
9 `. r. L" U) ?8 t9 w
]
% @! z/ |) f4 Blet k 3
: x! K; b& R  D( v* U3 i6 Zlet power 0
7 v! J9 s( D$ }3 S, Zlet local 04 Y. ?/ I+ g# N# U9 [* v
while [k <[trade-record-one-len] of myself]
2 @+ C- S) z( F; g9 Y. b  E) i[
3 Y6 w0 A2 t! W7 xset 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)
6 y' m3 m2 D$ t7 c" eset k (k + 1)0 u, S3 Y$ k, X5 s5 d) h* g. f4 ]8 D
]
% Y" J) X4 ?9 j9 [1 U& m: T7 Aset [local-reputation] of myself (local)" T) _. t$ \1 E. o9 R2 x
end
, a5 J8 ^% C3 m  P
: x# d1 Z0 l( t! uto update-neighbor-total
' G8 [0 W! p% R, z# A( M/ y) q* d( ?6 w: H8 Y4 P
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 i  v/ T! z9 F3 e  G7 C
8 S: |6 }$ m3 f1 V% Z

4 H6 Z- }' ?. lend
; w9 ]' e8 w" E/ E  N8 L$ U9 [9 W( t7 |0 l5 m: {+ m7 [
to update-credibility-ijl * H9 `0 Z# p$ g: f- Q; t) \

0 n+ l& C/ I9 {0 S: I$ `6 c;;
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。7 U; c6 t8 O% @8 y
let l 0+ e# {3 ^8 E+ A8 Y# o# X, k
while[ l < people ]! b' H& }. w( Q
;;
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' V" t# r  L$ H2 t; m- f
[  k2 Y) p4 C* Z7 I; ~
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" b' |- W6 _7 T  s3 }5 Aif (trade-record-one-j-l-len > 3)0 E" u- _+ K6 K) z
[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' H4 ^& F1 x. M/ Q6 \; c  t
let i 3
! W$ ?+ l9 I% rlet sum-time 09 k/ l! i& a: Q8 o1 j' G
while[i < trade-record-one-len]
) V5 Q, b; V  |# f: m[
  R# ~0 s' Q2 l& g7 O" dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ q4 X' W1 ]0 H5 c0 W8 S2 T% cset i
- c3 |# n5 P4 h4 F( i + 1)

9 J6 Z) D2 |3 f0 E]: O' b1 Z+ v# H3 O& I
let credibility-i-j-l 0$ b& y4 M' e( c" A+ |' Y3 }7 W
;;i
评价(jjl的评价)0 B) V* ]1 i/ d1 p% K6 @& Q/ e3 f0 X
let j 3
- Z* a% L& c6 S: k2 ~" P$ M. P' f. }# plet k 4/ o/ h9 M: g7 Q) d
while[j < trade-record-one-len]8 U/ @& \; ~  ~6 g9 T) A- ]
[
4 M$ J% x. b' s) ywhile [((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- v& n0 r$ B3 G& _4 q. n! Q% s
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); p/ y% k. q) ]+ i' Y9 N0 D
set j
" x. ~$ T6 f% v# O! a( j + 1)
, s9 ?* k& @" U) J' H! N0 _, U
]+ B: \1 ]  s. m6 `
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 )). p9 C4 O; `; @. n# W

6 l& Y- M' V0 C4 k. ~  ~2 T$ k7 Q9 q
; z' Q2 ?! |. J4 r4 Q  Z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- s' e( ~5 g6 _/ Q;;
及时更新il的评价质量的评价8 M9 J; P" W9 n6 p( S; J+ u
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 w3 e! y3 z. y0 Q0 ]* uset l (l + 1)
4 Z* n% s1 a$ g]
& a1 f; @1 H  p* Z) Y9 o" o# ]end
. _, S+ M1 t: D0 @! \" V/ d1 W1 ?* T- V, |! e# k5 Y
to update-credibility-list3 [" D4 i. R6 c& ]1 c
let i 0
6 S5 q. \/ R/ d( Pwhile[i < people]
3 r' X% s- b% l7 W& B. Y% k8 o5 f[
# k9 p8 x! q' r, V& {4 K, ]let j 0* ]5 c: a! I, q! J/ ^; L) E
let note 05 N# |% g1 _( G. N7 g
let k 0
4 g6 G/ G# \/ j0 O# t;;
计作出过评价的邻居节点的数目
8 \+ S& j$ t$ _- F! B' Ewhile[j < people]
9 J: O# P. A! p5 N9 H2 L4 z[- |. `% i- \7 P' j  V2 u$ j% _  s4 Z
if (item j( [credibility] of turtle (i + 1)) != -1)
" t, f3 m, E7 x0 S* \$ S;;
判断是否给本turtle的评价质量做出过评价的节点5 N7 s' o) L6 b' T
[set note (note + item j ([credibility]of turtle (i + 1)))1 s% ?) x" Y7 Z% c5 r0 p* D" c8 d! q) ~0 h
;;*(exp (-(people - 2)))/(people - 2))]
3 u! \5 b) a" ]( o7 U0 l2 ?
set k (k + 1)
8 _+ Y6 ~% o" S8 g' G]3 X8 h& K- P: e, p5 b8 C
set j (j + 1)' X( Z4 k- \8 ]2 l
]
% p. w4 V4 O% u! K& g, k; ?set note (note *(exp (- (1 / k)))/ k)
2 v  C! a+ @* }. ?# w) Dset credibility-list (replace-item i credibility-list note)8 i: F# H7 j/ L; N; s+ z; R" T
set i (i + 1)
% h8 A& F  w( L& w, q]( B- o; a5 ?& j$ ]. m( t/ X& P
end
/ b' f9 \( O8 D/ Q5 x; V8 g" g( A1 C3 Z
to update-global-reputation-list
6 _8 i8 S1 z1 N) d/ E: qlet j 0
" B5 A& X. p/ kwhile[j < people]
4 Q) w! i. Y+ G6 S* c1 k[$ K7 e0 N  K& z4 ]# e
let new 0% P7 t$ X  Z' s5 @4 J6 @0 v
;;
暂存新的一个全局声誉
2 P/ J0 ^/ ]! Ulet i 0, }+ a; N7 O/ H% D% N
let sum-money 0
0 I0 W  b9 \2 D/ Y* glet credibility-money 06 J0 T7 y/ m' r3 _* m' q" q3 J
while [i < people]# Q7 a1 y9 C* B3 C* K
[
0 W+ H& x( h& s5 C6 u* [set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. {: b0 C1 r6 _# r* C$ ]! b7 oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. s0 Y% [, a  J  g: Z& Kset i (i + 1)
2 _& F  T% Y% N- S]
; i+ k$ @! ]0 i0 R6 K& Blet k 0
# p+ m* F1 f2 T0 Zlet new1 08 R* V: I# @! E8 Z# ]' g
while [k < people], `# n# u5 Q/ f1 X
[# m- @$ y- h* n5 p  U; }
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 M' |' A' E4 ^7 T5 t$ q- v+ K
set k (k + 1)
1 J' i* O; w  u]
' w+ }" J4 x/ f# m: K* P1 yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 G+ b* n( s: W* M+ I7 F6 K, s! E! d
set global-reputation-list (replace-item j global-reputation-list new), ]( _$ d! T5 S- d
set j (j + 1)6 i. x! P8 I' F& O% Z, P# n
]
/ D/ N& G6 g3 J; Qend
- e! P9 i9 D, x5 S% |- t# E
, e  G: Y4 X( S9 V, E  ?$ q4 b
/ Q% I! u# C( e% D: @
4 r; S5 v! b% d% ^) ito get-color  b6 N" `$ _* L

3 ^; n! w9 W' d1 U3 @, Cset color blue
+ c4 u, b7 e! k- t
end
5 G: H4 q9 g: \: Y
. m( h! r" r( Wto poll-class: q# Y' ~/ N" u% p. Q
end
1 P8 b* U  l9 i! U: o4 T+ ^/ E7 l' q
to setup-plot1
* X" f( @; q& s0 q, n2 J' S& [" `# r. ]
set-current-plot "Trends-of-Local-reputation"
" T9 a  N- G2 n( e
/ L% w* C4 _4 `) P2 b
set-plot-x-range 0 xmax
8 t& R' D% `/ r8 T/ U/ Z' l* ~
" V, e3 X, n  y% v" v8 ^
set-plot-y-range 0.0 ymax

( H6 ]( @  v1 T5 ]: dend
# p4 H) F8 j$ `9 n- d: y$ E$ q. R/ X) @8 {. v6 \( B5 f8 A
to setup-plot2
3 B/ S3 g  P+ k  u7 }  g( z# J
6 _0 q6 [& J% r7 {0 Aset-current-plot "Trends-of-global-reputation"
3 g! S: \- g0 |- q$ m$ J; J

/ S. ^4 N, ^+ F: Oset-plot-x-range 0 xmax

! C/ C- o; ?1 \! e" C! N
3 I" S7 \1 l, w! Z7 g; C* v+ Aset-plot-y-range 0.0 ymax
0 k2 ?: X: n& u7 K9 m2 x+ P
end
- a8 S/ o- h( I: d! S& [' N. j
1 O; o& J& n* Y& K$ nto setup-plot3
" s4 U$ v# d! x
  z# [8 B2 H5 {( n9 g# j8 f0 Cset-current-plot "Trends-of-credibility"

+ B4 x6 [7 f$ {3 r, j1 M  }4 V, p
3 t3 U8 [+ ?6 Z8 D; G0 }0 {5 ]set-plot-x-range 0 xmax
' y* d+ Q: ~7 H* m

; j% N8 E, e7 Z9 g4 }  A9 jset-plot-y-range 0.0 ymax

& c# ?/ O( S; h* H: A+ f1 C: Y( s/ Bend
8 O2 \$ J: s9 y6 Z' i/ D3 T; V& O2 L  {  B
to do-plots
  g; \! J+ u, I4 [: j8 z9 @1 aset-current-plot "Trends-of-Local-reputation"# D) }/ i3 ]$ W2 x6 a& }5 D6 ]% q+ u
set-current-plot-pen "Honest service"  F# E2 I3 {4 u- c
end
* F7 p7 _1 ?6 l, F  [  D* x4 l: ?: U- B0 N! l
[ 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.& i3 y- z+ _" h5 Q# m" t
. R1 Y, N2 `# Y; ?6 a+ Q+ n) D! {
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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