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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:
  N0 ]. m. P9 d/ A& n8 cto do-business # K/ G4 g) {& z9 p, I
rt random 360
3 B3 J; _8 a/ E" I/ G+ r, T) X fd 1
( L1 o" Q2 {! C: g ifelse(other turtles-here != nobody)[
8 l& N5 [- _2 r. k( ?' J1 ]: 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.: K7 e4 h! @' u% q1 C
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( ~1 G/ _9 x$ G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ I* g1 I* ~- O   set [trade-record-one-len] of self length [trade-record-one] of self# s, k7 j# C# j" }0 r! y
   set trade-record-current( list (timer) (random money-upper-limit))
6 t- ?3 T9 e7 K. q% _& ?: X$ o1 |  M2 [8 M! P
问题的提示如下:2 @' V: x; q8 S5 A( B& j' I

$ V2 x7 K4 `  y1 L7 a6 r/ Lerror while turtle 50 running OF in procedure DO-BUSINESS$ v9 w0 i6 u; ~% y' O
  called by procedure GO; _; r/ X/ T" t, i, d& V. N
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* t8 {/ J. D! x4 A, X0 ]
(halted running of go)4 D  O  C% h3 V) P
9 A$ @2 X, z+ }" R  k* Z9 r
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~~) ~$ F8 x  ~9 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0 G" {$ F, X- q0 @5 ~+ X" j, P
globals[4 ^/ K% H3 A. t  M  t
xmax
1 y5 m7 b; m3 s. j3 U% b0 }ymax* t- _+ E2 @( H; s- ^
global-reputation-list
: O9 x3 m: l6 a9 M
! X) e, c. c: T;;
每一个turtle的全局声誉都存在此LIST
9 N6 d4 {' k) T# m- Ccredibility-list) A' s* L9 D! A. _, ^
;;
每一个turtle的评价可信度* d; V$ I" G$ A' c
honest-service
; B2 f( k; x' g* |unhonest-service
' c% {; e, c) e  q1 X. J2 Zoscillation
: y: ?/ Q1 X0 D- j* frand-dynamic, }" W7 [6 A# Y' d* f7 E
]
8 H* W7 B( @# C0 m8 o8 k. ~+ S' N5 [4 S" \
turtles-own[: ]* S) d. K6 S' a9 g
trade-record-all
+ L" M" K  s4 r3 n1 z;;a list of lists,
trade-record-one组成) ~9 e+ ~, S2 l" Q; r: c; w' j0 b' k* P
trade-record-one0 g" v1 Q8 k7 B6 r- W& j9 t
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# j1 _" O* \; Q9 a* w0 ^. H5 S# J  E
;;[
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]]
) m2 k2 P$ l! D# E; q/ B$ v) `* r" Ltrade-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]
' L# n( ?' o, I% icredibility-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& j7 i) W, M5 Z
neighbor-total0 I% C+ t( _* `
;;
记录该turtle的邻居节点的数目9 }/ r9 O" w, O$ ~) c2 }2 f
trade-time
6 Z. r* X3 W% ^; S9 Y;;
当前发生交易的turtle的交易时间1 \5 M: H/ x( D/ W5 v7 ?6 }" L
appraise-give
1 K7 a& h# S1 C;;
当前发生交易时给出的评价
) m$ o# U. a% Vappraise-receive
" G6 R2 b7 }" |# z;;
当前发生交易时收到的评价
. |9 |2 T6 d- L3 \# a( Zappraise-time$ T6 e3 `" Y3 F* |& y  H& A& r& e
;;
当前发生交易时的评价时间
, h+ T* K( S! X2 A  b( d' qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
; n, x2 Q8 H0 Ntrade-times-total
% ^3 T# Q' F- r;;
与当前turtle的交易总次数
. n3 k* H  U3 ^" Mtrade-money-total& I8 [* P5 y" E# m# E
;;
与当前turtle的交易总金额- M4 v" F3 j/ ?5 G7 T9 r" Q4 c
local-reputation0 z" W) y, \6 R3 I) A/ ^2 J0 d1 h
global-reputation3 y  v( w" b6 A$ i
credibility
& y' h0 G9 g/ }: ];;
评价可信度,每次交易后都需要更新
5 n: ]/ e$ z1 f  d' bcredibility-all; h5 i* ]& q2 Q1 O: O
;;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6 z* m* A# f5 O

) d: S- y6 k3 n, u. V;;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
  a  a) Q& s# C5 Z4 Gcredibility-one
; b3 r' T2 p3 j3 O5 b5 w4 P* T: h# T! k;;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% s$ V( H; o* I6 t+ d8 j" N
global-proportion6 T3 z" m& Z4 V5 x
customer
0 l  K) |: L* h+ t# ucustomer-no/ q2 E( w9 E. {) T1 g
trust-ok
) G3 V! s1 Z2 l" y& Y4 q  m8 T/ |0 @trade-record-one-len;;trade-record-one的长度
' j! T# O3 c% y2 J; }]
) L/ m2 ^  U+ a6 ^4 T) d9 D+ E$ f
9 r# P) E/ `" N;;setup procedure
# g6 N0 @+ \4 {
& b! p' D# u0 R1 z. g( `to setup( A4 R5 Y6 x; X* X
" h0 t2 h' M0 x2 D
ca

! c8 ]: B' r; G6 T1 W8 @
$ |4 S" k1 K% d1 L; Einitialize-settings

; c6 H! d- \4 j5 F1 n$ f( ^/ t- k! q5 P: y' g' J
crt people [setup-turtles]

! }* i4 j: T: y8 M: @; D: f6 ?: D: s; B& ]) J5 y5 n9 j, N5 s' _
reset-timer

8 a9 ~  Q: u; s$ G! [  x) O4 A& b; b( Z
poll-class
0 f% ?& a+ w. u& f  [2 ~; k

9 D3 |7 ~1 g7 Q9 Q9 R& w" osetup-plots
, i" `7 W7 S6 F1 S" m, I, B

/ z- Z$ o/ `1 \: K: L  Y; bdo-plots

8 T; y% i) J5 ]4 w: b$ K, ]5 M) jend* d, P# o/ [: A. n0 Z: I, K
9 ?/ n3 Z: [8 ]
to initialize-settings9 p' N" o, t* t, X8 [/ w* a

  T- U8 f3 n/ tset global-reputation-list []
" Y: \, G. W& ?" t4 `8 N

) [0 T3 b$ O! Z  i& i$ |set credibility-list n-values people [0.5]

4 ?$ W7 Y/ j4 h8 l
! `# i: n0 p6 ]3 h" zset honest-service 0
" I( q9 l5 j. N4 p
* e' |$ w7 E! v; q
set unhonest-service 0

+ k+ d; C- o6 g' a* u& B1 S0 m5 ^4 [9 k, v" J
set oscillation 0
! O% ^! _5 h2 p! {4 Y( y. A+ S
* D2 y; k0 r1 G: K9 W9 W7 A1 p
set rand-dynamic 0
7 P, o5 t# G" H
end
9 ]: \) b& l5 }3 M
$ Z' Z0 q& f# ^to setup-turtles , }9 l+ h1 r) W$ O+ e
set shape "person"
4 Z. B0 D  d* R& d7 Wsetxy random-xcor random-ycor
: c3 Z2 r; F( a  z3 ^- \3 i9 Qset trade-record-one []
3 [$ m7 e8 f; B

+ V$ }+ y/ X( i- [( Aset trade-record-all n-values people [(list (? + 1) 0 0)]
- V9 K% G' y' N
. m6 C5 r3 K5 \( f6 H' |8 h( h
set trade-record-current []# |+ ~" f6 L1 j) o
set credibility-receive []$ p, D. O, T& @$ S& X
set local-reputation 0.54 U! d: T$ ^$ u& R7 z3 M
set neighbor-total 0& O+ ]/ t% o9 E7 v: `
set trade-times-total 0
1 a4 z" j) T. c/ j" F; Xset trade-money-total 0
  }$ r0 }2 x; o7 uset customer nobody  H8 t% @  G' S* _1 n6 Q( l6 B0 o
set credibility-all n-values people [creat-credibility]
& n$ F  F' X( m% _5 a( Lset credibility n-values people [-1]
  V  U+ I0 S% p! x' e. s0 G# k8 [get-color1 a9 o* A+ m- ~

* s# m' v. R0 send
8 ~) Q0 H; p( j- g+ L  D! k
. z& d2 j* [' g$ pto-report creat-credibility: N( S! R0 d! s! a; G1 C
report n-values people [0.5]3 G, h. t' r% y
end0 B0 K: h+ f6 [1 w2 m

6 ~+ c; h) y, p3 [to setup-plots9 z. z( \$ S5 g
" d* _& O/ E; L# ^- _
set xmax 30

# `1 |- J! M7 D; \- g; B# W2 L2 z1 @  R2 W9 G8 t+ H! o, x
set ymax 1.0
9 x- P$ K3 M9 W: j) @) I7 X5 g0 ?
% q+ s& ~1 A. c$ [9 B  L
clear-all-plots
+ ^/ g) C0 Q0 o# V( l! {; j2 ~
) s* W! a* l4 R" l" F
setup-plot1

$ j' I  s( ^7 @) |) H* i! q9 ]& O$ C/ [* Z4 Q- m5 Z) e6 J! N
setup-plot2

4 k7 I  Z* X% Y/ ]9 |1 g3 ^# @0 f. O
setup-plot3
' {5 D4 f* |! F# `
end% R1 j$ g8 S. B% L

% I' Z' @) b4 x) a% N;;run time procedures
, S, m& M2 N$ S+ w- n2 s* n7 {
1 [  g( e8 y, d7 nto go
4 X8 d4 S1 W" v+ i1 ?6 o
' W. z' r- K+ a6 Pask turtles [do-business]

) e% p3 X! R) B; [& t+ w# A1 rend# ?! T* U8 N. G9 A& N
8 K) n6 P& x/ n, j! m! o6 o: ?
to do-business
# r, j  v- n: R0 t4 d
  e( |- e) [9 K

1 I$ d9 C2 E; Q% r5 z) `3 Grt random 360

, w2 j  |+ _8 I$ n% ]5 D
  K% J# f0 Y8 I4 sfd 1

8 L. W4 D: G4 d  ]
1 |: ?6 `1 f; a  |$ ]4 p& Sifelse(other turtles-here != nobody)[
5 x8 {, H! d! K  d' R# W0 n, J& j

9 V9 X4 r, f3 S" S8 `2 N1 Mset customer one-of other turtles-here

1 |! ]4 }# Y% d: J) m) Q! K$ ?% |+ q; w, u
;; set [customer] of customer myself

) G( ^8 T' h7 J2 x- p1 U. o/ E" y6 M3 a; V* Z2 A7 {
set [trade-record-one] of self item (([who] of customer) - 1)
0 ^$ N2 L) i: f[trade-record-all]of self/ J# w* ~! v  w$ S
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! ~' ]) J/ E. \; T

7 V2 ^" p2 _: _+ M! Bset [trade-record-one] of customer item (([who] of self) - 1)
1 x! y. n- n2 v* u2 j" `1 l' v[trade-record-all]of customer

0 h" a8 u6 F0 m" ~# Q  Y2 O5 S
% h: ~2 n7 [4 [. Xset [trade-record-one-len] of self length [trade-record-one] of self
$ A# `% J, z% ^6 T  D0 Q! h: `
% F( W% b; j* ?( @
set trade-record-current( list (timer) (random money-upper-limit))

$ U3 d9 |( N0 g* z6 A3 ]
" s( O3 t0 F5 J) b! eask self [do-trust]: ~' S1 o0 W4 X
;;
先求ij的信任度7 [% D: m) w7 N1 q: R; p6 U

( i! K+ p0 n' kif ([trust-ok] of self)6 G( e2 s# J0 k. t1 t
;;
根据ij的信任度来决定是否与j进行交易[
/ D. A1 ~3 Q7 V0 G- lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 N/ ~9 I$ J1 b0 L9 ~

( a/ J' r7 s0 J9 o[

6 b! z/ S9 T  G% x: H, ~' D1 a# `  i" W( e- c+ W
do-trade
9 `" Z4 w" m& D  V3 z6 I% M) T
1 L% \3 g: k4 r' Z% h2 r4 @+ v
update-credibility-ijl
3 o) H* u; T6 R; x
" R1 O% N' u' Z$ w/ V  e$ R: u8 O
update-credibility-list
: _3 ]/ ~4 P8 v9 V2 G9 L' }0 N- u" ^  x5 v
$ E$ r" T$ h7 W5 m5 f

1 F! c" w" }/ N) xupdate-global-reputation-list
& R+ M8 d, l; O. i1 X

) j$ t2 O4 ~( V  z/ ]4 jpoll-class
) w( e0 O& B1 x7 X, b- B8 O

  M8 ?' M6 ^/ g( I) _: F7 ^/ Hget-color

) b, d4 k6 u; W  D
, P! W& X& E& J3 `3 M& g]]
4 g$ N3 l2 q+ I" U3 r6 {& k8 h$ o5 T5 {* m; _$ D
;;
如果所得的信任度满足条件,则进行交易  B  E% z1 Y; I* f+ M2 E

9 s1 k2 X3 g1 v# x) q  M[
+ \" A) s4 n, R& k- X) \
% P( D% F  _0 Y( }. h
rt random 360
: M& I2 R7 t$ z/ Q" C& d( L6 {
9 ]' V5 c- Y) e" x9 x/ M
fd 1
. }2 R6 f' F) T! [/ ~
0 A( `: [( r% h
]
% w. B$ }9 F9 K4 s9 w
& m# E- F. V7 K7 E$ c/ }# g
end

3 [: E4 @9 X- f8 K9 ~8 b- a! x" V8 Z2 Z- _+ g/ f
to do-trust 6 C/ H- d( t! ~' `% F* j/ |
set trust-ok False# D6 s3 ^' q1 F, i

- O& R+ L; O* J3 D8 P5 g7 p, ^

  C7 ]; o9 R: p: Plet max-trade-times 0
" h! c( g$ \! ^+ h2 d/ `8 K( V7 R+ i9 Bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& N1 e5 ?. K6 w* F5 o3 Hlet max-trade-money 0
9 F- ]" J  H& s% H4 mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 o& b5 P1 f: n* `! U: q/ [! q  i
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- g! u3 n9 |+ C7 X, S8 \1 z
" _/ I0 Q, R2 W9 r

- `+ V  |# J) |4 \+ d5 W8 V; fget-global-proportion
+ E# I9 ]( B: [let trust-value) x  m: _7 I  b. ]: U
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)

! u) h" z1 q2 a; M7 [& Z2 fif(trust-value > trade-trust-value)3 }  l# f5 [: o! O$ ^/ y
[set trust-ok true]
2 y) U$ ]9 f' s- xend
4 l9 b% i1 j# g: a  g2 Y- S- L8 W2 C" f6 R: d6 T
to get-global-proportion* q" p6 c( r' g0 U9 ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)' ?) U1 C5 w1 B0 w
[set global-proportion 0]
" y5 p' U7 [9 C* Y3 ~$ U" }[let i 02 ~. }! v0 V7 M  @' L! X
let sum-money 0
6 e1 O4 C9 r" s/ u8 L$ E9 zwhile[ i < people]* \/ n$ n8 r$ s! H0 s4 u/ m
[
6 t( k5 _& @3 z1 I6 cif( length (item i1 ]& i! K8 L' {9 ~5 B) ]
[trade-record-all] of customer) > 3 )

* T3 n0 t2 T& s& S* l[
* u1 Y' _/ Z8 e" U+ z3 @set sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 z' m  ]1 c. e- W) v
]1 E# J' i) y; P5 l! u
]7 ~1 G! ~* z2 e& ]1 T9 Q9 ^( ~2 U
let j 0% p7 l! B. `# }* O" f- e9 _: n
let note 0
+ S1 X! e# D% r2 [while[ j < people]* _" `. {) ^+ m% z0 b) o9 ~
[
- I% d2 l' J: f# O4 Q8 l- i. Lif( length (item i- D* o7 b: _$ N# }3 T6 h1 F
[trade-record-all] of customer) > 3 )

6 U% ?3 z. k, m[& K: b- o  a. E9 Y, X
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% L5 T; D  `0 E( N# L0 H
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  h; N# g( a+ W$ t9 H
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 e+ A; X& Z  X! t" C, E! @+ x9 B1 x]9 j0 `- F: B  ?5 H+ S- R
]
8 P* @: n* z& {+ F# [$ p& `set global-proportion note
* _0 R& t1 j+ k6 s0 c. V]
/ {1 k& q$ w+ Cend
3 Z% R8 I$ T  j  e9 M: w
* U- n( ?6 X8 \: fto do-trade
) l) {* Z0 E$ t2 z" V0 P;;
这个过程实际上是给双方作出评价的过程  [1 L: o7 F5 b2 J- Z! n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 \8 ~4 G2 S# R+ Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 J5 \- ]- T* ]
set trade-record-current lput(timer) trade-record-current
/ A! A+ N7 f  x" V4 w;;
评价时间
9 M$ X3 ~; T5 F9 t; xask myself [0 b3 H# Y% \) {- }2 S
update-local-reputation% ]; w  `, M/ A' W, D" k2 ~& {
set trade-record-current lput([local-reputation] of myself) trade-record-current0 i. z- D  m6 k& w# ~
]1 E) H$ k) h7 }0 F
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 ?2 }6 u" D$ P8 M* n7 l* U( Y;;
将此次交易的记录加入到trade-record-one
7 {2 ^- ^) K; F3 T! j5 {/ p9 ^set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  t& _) h6 m. ^& v6 F
let note (item 2 trade-record-current )- v, C4 B1 h! a2 z4 J
set trade-record-current
6 c% L! `! |2 D$ N6 }1 N& ](replace-item 2 trade-record-current (item 3 trade-record-current))
8 z( r4 s3 t1 [
set trade-record-current
4 g9 v  |! }# p( C2 }( U" E% `2 F(replace-item 3 trade-record-current note)' O% C. `! V# ~1 u

% ~: x% [2 A4 [/ a+ X

0 T( L6 H1 n9 Yask customer [
8 F5 J8 R! p; ]8 X# E: fupdate-local-reputation2 P8 l5 O5 ?0 ]$ m2 l* s: J
set trade-record-current
: m$ N- q! f" d# Q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 G" Z( o1 [9 ^/ f& n% ]' ~]
, J" I: l5 @% R  M! r0 b. l
( R. X  d: Z. x5 N7 O
1 q* k3 n7 d$ Z: O; V
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- p+ g( |( _, F- }0 W3 O/ V. F, Q) y
2 f/ N/ V8 k6 ^* ~& n/ s
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 T$ A5 U* f) y3 K- ]! ~
;;
将此次交易的记录加入到customertrade-record-all" q0 ?  x  G$ |7 Y
end
7 Y+ c- a  ^. r) a) `3 n2 c6 b. F6 c( B( }4 m' ~* p
to update-local-reputation* r% ^7 B% k5 j$ F$ d
set [trade-record-one-len] of myself length [trade-record-one] of myself
* u* h* {  \3 y0 ~% R9 C+ V- H
, @& H( m$ d% @9 U
;;if [trade-record-one-len] of myself > 3
; g- Y9 L- a( \7 n  u
update-neighbor-total7 b& U- F1 y* ]! @% ^+ q7 h8 ]6 A
;;
更新邻居节点的数目,在此进行3 G1 T3 l$ |. I. q; X
let i 3
! Q3 \5 J; i; L) olet sum-time 09 h3 c- j2 {/ ]8 }- Y0 i
while[i < [trade-record-one-len] of myself]7 F) m9 x' g2 g6 [" J; D& W
[
% p, Y) ~* b& `5 M, `' sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& u) g$ U% c' \' {3 H
set i* i( O+ x: k) \4 E& ?$ J. p7 c
( i + 1)
2 e" A! ]4 P( k3 z- c+ d) a6 V/ y
]
( L; x% S& j6 A, \! q4 O9 Klet j 3
, z: n  `4 Z8 g; g4 T5 u3 Ylet sum-money 0) u* }' r* b$ \0 o
while[j < [trade-record-one-len] of myself]# d- U/ }- N% r& J+ K% m: b
[
0 s, ]9 b" h3 Y  Gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)8 G% a7 [. I7 x6 ]4 M
set j, `  R6 ]+ K" L  {) W
( j + 1)

% Q" B; H  D$ H/ n+ [1 L]
2 J9 `9 M& [9 d8 b# [. f$ O5 Alet k 3
/ l: f; h/ L/ e8 U6 v) G# \0 Q, Hlet power 0
6 a: V, @6 ?( c. y1 O& z* O1 Ylet local 0
0 |' z/ S  [; b/ t+ }8 W+ b4 r# G6 @while [k <[trade-record-one-len] of myself]
: a- c% Z0 M0 a[
3 J1 S6 Z" F% a" U2 q3 W, A' 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) % Y" Z/ @3 H0 {
set k (k + 1)2 f# V8 P8 A# A9 y' ?- }0 S6 Y
]. o" q2 @5 e: |- a0 a1 W1 y% s
set [local-reputation] of myself (local)- p, ]( B# f5 Z) y+ V6 |. B
end$ z5 C" v% S0 s( S) g

- d1 {: n  D# A6 ~+ Ito update-neighbor-total
; I- d; ^) |7 x* a# C+ q& x) o: e4 Q+ d% e
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# |2 [+ W. T9 f. `) v6 X1 |8 v: g% F; w& ?: Z, s

4 G7 }" u2 F: j- ^5 H3 d* gend
6 x. t0 z# i7 m/ j
- n7 _6 W  x" b5 Rto update-credibility-ijl . S9 P: M1 T3 n) {7 P
, O8 ]1 q- y0 N% C8 [
;;
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。0 P6 ~$ I, a& G# D; F
let l 0
0 u% i! p( E5 hwhile[ l < people ]
: D" a8 P% n( K2 C, P+ j;;
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4 ?, W0 s$ Q. y0 f% _  {
[
' k  i' k1 K( M$ s8 ~let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 }( m8 s) A% I- x: q
if (trade-record-one-j-l-len > 3)
7 ?# S, I* b2 P, ?! q[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- |3 Y2 K7 m- q
let i 3) t% v% B+ V1 g
let sum-time 0
) _2 e! b5 G9 _$ Xwhile[i < trade-record-one-len]
8 c$ G# ~7 z) R6 X[
) H" ^: F! Y. ?, `+ q6 iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). D, g4 w. v& X& L8 j# t
set i
8 h1 \6 x$ N6 v/ g# X' A! g( i + 1)

9 k- y( N  ^; ^9 H]' L/ Y$ o5 T" [2 l* {2 @; t
let credibility-i-j-l 00 {  F/ `5 T+ P. T& ]; i6 U- k* t6 g
;;i
评价(jjl的评价)5 y* P; I% b! `% C; s0 g5 _2 s
let j 3
% x# N: E" Q* Zlet k 42 ~& c8 ]  C6 w4 m
while[j < trade-record-one-len]! K( x# i2 u( W7 ^
[
. h$ g4 s) O. Lwhile [((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8 b$ o% }4 \7 p3 p# W, I
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)
& `/ ~% I. G) V5 _9 w+ P: Fset j
9 q- Y4 S! Q3 q5 @- m( j + 1)

9 N, \/ ?  M" S, g5 S]: \' M9 q) M7 J
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 ))
1 s: k& k* w9 D5 h4 y) V# v# F5 T# ~9 K! H/ f2 J8 ]( @6 X
  g0 y, B3 e( A
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  L; Z3 L+ P: l;;
及时更新il的评价质量的评价6 N& U/ u9 _: q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 ?# O6 g) @5 r/ h( k
set l (l + 1)
' h. E/ K0 a! n]
* ^1 {5 W9 z9 r$ O$ Eend7 w& q9 y$ S9 g

6 {4 I( }! A; m/ S  O; \5 M6 Z; bto update-credibility-list
: ?% J9 o' V7 v9 j$ O2 v8 ilet i 0
* x$ b5 y  d  g8 w0 E0 a1 E/ C8 k1 wwhile[i < people]
0 {9 A5 V0 H+ Q" A[2 I' v1 O9 o. S- e( I
let j 01 o" o' s+ z) E+ D$ ^; f
let note 0- B5 _- i+ w# i) L1 H( z9 l
let k 0
  x% f: W$ J( e+ c$ _2 t6 _, C/ F;;
计作出过评价的邻居节点的数目
/ K5 K3 ?7 u/ i' ?6 x/ M. `- Swhile[j < people]9 @( j! ?% x( }! B9 L4 Z
[+ a' t* \' m! o$ K. B3 A
if (item j( [credibility] of turtle (i + 1)) != -1)4 L3 o0 a' U  a" A
;;
判断是否给本turtle的评价质量做出过评价的节点
1 \; N( ^! z3 D2 V[set note (note + item j ([credibility]of turtle (i + 1)))
5 X" T( }  _2 u* b;;*(exp (-(people - 2)))/(people - 2))]
: t( D- E& J* X. g' [
set k (k + 1)2 x" e! i5 B5 A# R, Z7 b
]
  R) H4 k7 V; e+ Q* ]$ yset j (j + 1)" e- R) r" X4 W& M0 L! g
]
: T. m8 U- b( r7 s. S& K+ lset note (note *(exp (- (1 / k)))/ k)
; X  y# }  K5 N( T8 ^& U( dset credibility-list (replace-item i credibility-list note)
4 r) o! m. y* j+ w+ [& [3 zset i (i + 1)
' S+ P) g8 O9 s/ w3 H6 N]
; e) p. Z, P' Y, Yend
' ]. `1 s1 {3 f+ x$ m  _' o& s4 e
- G  G6 N# q# `( s" ~/ \. s5 Fto update-global-reputation-list  g  F9 k5 [+ J0 G
let j 04 i) a$ I* v8 N$ V# P
while[j < people]) g8 t4 k# R; s7 G/ t$ K
[
, ]! u* N0 Y. u0 |/ `. tlet new 0
6 i( U. z% M( x% m;;
暂存新的一个全局声誉, _$ o% h3 t& g! |
let i 0" V) [6 y& F6 u3 o
let sum-money 0, X) {9 I) `$ F6 N9 R  J3 z
let credibility-money 0
# k0 ^6 u$ x* i8 s& s/ `( S/ Twhile [i < people]
& G% J! s& C9 i6 r. y[
' Y+ Q/ }/ h/ ^4 h4 Aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* G1 H. ~* z0 |  Z* [, B  y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 G; r$ H5 U5 k5 Z; N
set i (i + 1)
# U/ j$ T! e. v]9 J4 I4 t) v3 L- r1 R! c( H
let k 06 [* J0 C8 F2 E8 f8 l1 `) ?
let new1 0( @$ b0 n/ N& r- o; r
while [k < people]
) z* D( L  d! q) N$ J[4 o/ ?& A6 k, ]* c/ j
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)* k+ s6 A6 F# b  W, m
set k (k + 1)8 _% Q8 k! N# x3 \# E0 E, r" H8 i
]
3 k$ ~* t) W& I8 rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; a& l0 y" p6 P) Tset global-reputation-list (replace-item j global-reputation-list new)
5 {9 o9 T9 X& W- j* _* Oset j (j + 1)
- Z. I2 Q0 s( P5 `/ C' ?* }]" A$ O: Y: A' O9 o8 D
end
9 l( I+ c0 G( h, T6 F1 G) O/ O4 j1 ?3 a/ {
( \7 g6 H9 e, u

9 ^9 e3 L0 ?" s: U/ V: M; fto get-color
" G* ]: s3 n% q
& n1 j( j4 G0 ~; g  zset color blue

. W0 z  c3 i$ Hend4 `- @; S% w1 e4 U
4 k  ]# G* a8 Z& {" S6 k
to poll-class* f' F; D8 S# H, t* R; J
end
9 v( r/ h' H7 F# n1 g3 H: h! R; o$ t. @5 D% W- P
to setup-plot1
) e; T* k- G1 C% c7 D
2 Y6 t8 z8 K: Q  b' dset-current-plot "Trends-of-Local-reputation"

" q3 U, Q3 W, e/ G$ A9 R; V& s8 h' x7 a6 i# W" |: G
set-plot-x-range 0 xmax

: d3 ~) z. e3 a0 n* [  X2 U
1 d1 K" `& v1 I# K2 i. c1 wset-plot-y-range 0.0 ymax
+ F. b2 U9 i& x0 F
end+ p$ ^+ o: q# p6 h- b
" U4 I4 h& h# k+ S
to setup-plot2
* f, l/ `3 \" v
: r' V& ]3 ?  B" p) \! W& Oset-current-plot "Trends-of-global-reputation"
& X3 t( T6 K: T2 X  u# J! p# q

* e, m8 j3 I( e  U, Kset-plot-x-range 0 xmax
' s2 B& `8 O! q+ m: l
' l, L, p( N0 F5 Y' [" q
set-plot-y-range 0.0 ymax

& |) r3 _6 X4 H" l1 M0 Vend
* p! Q* d8 ]# F2 G
) L/ \) B, ^+ D+ p/ }8 Jto setup-plot3
& x9 I& q9 T3 Y9 B( ], T+ P, G1 c$ Y4 P. F$ i) v4 z! c
set-current-plot "Trends-of-credibility"
2 h) Q+ O, }; l
. }& J3 D2 w9 W3 A5 l
set-plot-x-range 0 xmax
+ H- ?! V; L9 {0 Q8 y1 Z2 S+ A
0 ^. Q9 t& g8 }
set-plot-y-range 0.0 ymax
7 ?9 Z, t7 i! s9 ^: I1 U. K
end4 @" o! w  O' q: l% ~

' ]( M) x1 \* a8 H! Bto do-plots- @- X. L$ ^+ Q$ j$ f
set-current-plot "Trends-of-Local-reputation"
" u8 ~( ?4 y9 k6 ^% p. p3 G; Q* Hset-current-plot-pen "Honest service". H8 H2 [, e- X8 C. ]/ K6 `
end
5 u* ?7 I; c- n3 ~- w# T' s
. ^/ I  a1 \; t! |! h1 c3 o[ 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.( \4 I/ C) v4 @3 S0 K) n2 T

2 g7 s) g, `/ U3 p1 }' d& n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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