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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:
& e4 B% a" w. d; C# i7 p5 ^' d8 uto do-business
" @$ q/ I2 c7 ]0 e( y3 O1 \8 J) I rt random 3609 B5 h3 [+ o( x7 Y
fd 1" O; n( E1 F) a2 q
ifelse(other turtles-here != nobody)[
8 A5 e1 T8 E  J; f* Z  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.
0 ~; r/ ]3 f1 u6 H8 E   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ ^4 Z- }2 M( j, m) }   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- c3 T, q6 y* N, s   set [trade-record-one-len] of self length [trade-record-one] of self. c5 o3 Z2 T/ A  b: v4 h+ N
   set trade-record-current( list (timer) (random money-upper-limit))4 O, O# {( w* d: Y
- X9 n* E" S$ F( ]( |2 _
问题的提示如下:2 J! Q2 K0 e6 r" w% _* Z2 Q

& V% |7 F7 ~* X" q0 Eerror while turtle 50 running OF in procedure DO-BUSINESS
8 Z: L' L4 n: ]" b7 y/ H) o- O  called by procedure GO
+ x7 u/ m. a1 s. C  L) q: ?# |* vOF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 G6 N: y4 |8 V+ J) F9 g5 b. S
(halted running of go)
+ ^$ H% ]' V# Y, t* P" U
! @+ O6 a+ m8 M: @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~~
8 D6 o3 Y+ i" w1 N" ~+ W/ z, C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. S2 [8 ]) h+ R( `  y
globals[
+ u7 o( ~1 t% a- S1 M' Z  l2 exmax' x( D9 z% p  o/ F5 D+ P5 N; c4 I
ymax2 `: {! X- v2 J" A4 U$ E0 r/ \
global-reputation-list; i; }( t. L. n+ y9 o

- h6 e" A2 z, @- z% A' x;;
每一个turtle的全局声誉都存在此LIST2 I, A* t2 D) g+ n1 g& W
credibility-list5 x( N( u! E1 S% k4 t4 }" W
;;
每一个turtle的评价可信度$ s" ^0 x8 ^& a8 @
honest-service7 b7 W/ W8 e5 Y3 T
unhonest-service
- p9 Z7 N) K* N. Qoscillation
- B3 f8 m: q4 V, Drand-dynamic4 l: j2 O8 o! J7 A$ t. S4 f
]0 P$ e& {) c' n$ Z- c$ l* Q( {: p4 b

" W0 N0 V# B+ c7 d' K4 a9 o( C- J7 _turtles-own[: o$ |9 G' ?9 w( ]( [
trade-record-all# d$ j5 S4 V# ]/ F7 n
;;a list of lists,
trade-record-one组成# g% U2 M  ?# B: O. Y4 v0 x5 ?6 e
trade-record-one
/ j$ X7 t# u. l; d$ F/ p;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, N$ F) w+ ^, ~0 ]6 E& n+ Y+ V  }+ q, i  p& M# r- l
;;[
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]]- D/ f$ O  a6 J; e! F2 k) @
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]6 k" R0 m4 \0 f, N: t1 ~
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! D& r/ \! }) Z4 b4 S
neighbor-total
9 J# t6 O" c5 c8 r# \# K2 k;;
记录该turtle的邻居节点的数目9 ^* Y! E% A5 n0 c2 [7 h* h
trade-time4 w% t8 ]" u. a% p
;;
当前发生交易的turtle的交易时间
+ B4 @* P6 a0 C( R2 F3 m7 m! Cappraise-give
8 e6 |- q2 C$ E* Y) u1 s6 ?;;
当前发生交易时给出的评价  Z3 \" Y) j. ~* Q* w  |
appraise-receive
# I% `) b' d6 P;;
当前发生交易时收到的评价( g2 G: z( X5 p4 J! X
appraise-time7 W% o: R, f1 A( a1 D
;;
当前发生交易时的评价时间
6 t1 H) {6 t& y+ D6 _/ r8 klocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 ~, K. \5 k+ V: P4 {trade-times-total
3 r9 ~2 `. l! p' k;;
与当前turtle的交易总次数+ @% f0 `) S7 F# B
trade-money-total
( v, _; A4 l9 Y- ~3 M6 w1 m;;
与当前turtle的交易总金额
% k. y4 _, L( \: s0 {9 k$ a5 mlocal-reputation/ ~- U( H  o& a" _
global-reputation% Y' u/ {( [& |7 o
credibility* X4 p7 S4 _0 |5 a/ y! P8 H5 c" k
;;
评价可信度,每次交易后都需要更新. G5 \3 A  x4 V! ]5 r; x' D+ a& F
credibility-all
3 X5 \) c- B$ T% ^. p4 S# @;;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
5 F7 c' ?0 r2 z/ q% P2 h
7 K: D7 T) v* g;;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
& m8 v( l6 I! qcredibility-one
+ z1 ?8 p1 _+ P* P2 z;;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people8 Z5 \, I4 N8 R" l- J1 G
global-proportion
3 ^8 o* h, n$ }$ \customer
2 l4 |) a4 _8 S) M+ G$ L% Ycustomer-no+ P6 @! P; |( H" W) I9 C$ U0 {; V
trust-ok  J! C+ |& ?, T
trade-record-one-len;;trade-record-one的长度
  e% D" r5 W( `/ ?2 \; `]: a: i! X7 L0 `; P  Q

7 S) U% i3 N" T;;setup procedure
" i( x3 c1 J; o3 u0 v9 K1 g( X5 M
to setup9 `5 g, z4 R7 d& L

- l: k9 v9 J# B& D1 Zca
1 b9 l2 }  a) @2 M. v; S8 Z
5 g9 O; v# z. O, |
initialize-settings
2 d9 y& f" N. T2 M0 l+ ]" B9 Q6 N9 x' D
  M% q/ q/ ]3 D8 X8 p( a0 L
crt people [setup-turtles]

+ Y/ t+ Y$ A9 W, D" @3 \! P9 n# _" R' x$ {2 _
reset-timer

( g/ o6 w) U6 P) ~+ i
4 w2 }- K" k8 [3 `* H# Y  U: p2 xpoll-class
9 p+ J% I1 U' I0 y9 _
" Y% F. u; x6 A1 t7 J5 e6 u: ?2 g
setup-plots

8 u6 z: Q; W% `. ?  l! j+ y. J+ S
do-plots
; Q/ F% P/ |) t4 _0 E( j
end
. I' M. r2 h) q0 ~- X2 U7 K
# J; Q; s8 f" o1 X2 y  L3 X$ N$ \to initialize-settings% T5 [6 K6 ]( J! e9 [5 T

: b* ^, \; a; g( zset global-reputation-list []

# r: ^  b0 `. p8 V. E* J7 d9 u' S: |* P0 j* p9 w
set credibility-list n-values people [0.5]
/ u0 I* J( U, F! ]  j6 O7 o" j
) t. ]0 e& u/ a- G
set honest-service 0

" G' a, h+ a; {9 U/ V3 w$ E) d: f3 V& h1 h9 f
set unhonest-service 0
7 C/ M% u2 X% M) m

: I! ~/ {  j" V+ @$ |, @set oscillation 0
2 P3 J/ d* @1 L, j: s; M: E% l) a( B

. ^4 Y2 a5 {- u5 cset rand-dynamic 0

& W" S# k  C2 c! T/ Aend
/ ~& c) ]- _/ e* V  L. z6 _/ d) m5 x8 l0 j9 z; \! M3 g
to setup-turtles
7 `" O6 m) c: sset shape "person"# a9 z2 n% s; R# v, a
setxy random-xcor random-ycor
3 ]1 V) B- L- b& E3 U2 s6 lset trade-record-one []
* Q" n& X4 h& ]/ i) I8 }  f  u

5 ~8 i- a8 J& y6 X  z; h1 C5 W+ S5 _set trade-record-all n-values people [(list (? + 1) 0 0)]
% |# {1 ^0 q) a5 q4 {% ?; v
! T4 b! Z9 C8 Z6 h7 S, e
set trade-record-current []
9 Z% R9 w  r- I2 h0 H6 }: L5 cset credibility-receive []0 Q& h8 D" H; H+ e8 ?% q9 P/ B
set local-reputation 0.52 U( g& f1 O4 y7 V: a3 L
set neighbor-total 0
: e( [- M2 c- f& nset trade-times-total 0
3 h3 |6 x0 v, f, e, N" P+ g5 fset trade-money-total 0
$ r3 C2 H9 e4 ]; N. v3 [" H: c% Qset customer nobody
& J6 G6 _$ ?- zset credibility-all n-values people [creat-credibility]6 ~* E5 B. z1 O; E
set credibility n-values people [-1]1 Q, O& N5 }, x3 }  r4 G, m  U
get-color
! t9 U$ m3 N0 U) V: ~" ?( e4 ]' }

4 J5 t4 E; L- `+ C3 R3 o/ Pend
+ A4 N+ o- e% Q* R1 w9 _% x2 K- n8 F$ T0 j$ l
to-report creat-credibility" W; [0 V2 o2 f
report n-values people [0.5]. z0 \& C8 w! e1 i% |% {$ Y0 O$ K: B
end. h3 K" B5 D& ~  w, d
0 i8 I: D$ V( s' i: p# Q
to setup-plots
9 A* d- R, A7 Y/ v6 x* y) A  I
* J* v) ?5 y" eset xmax 30

/ G9 Z: Y1 ~& \7 ?4 e0 r4 e- S- _6 x1 ?7 v
set ymax 1.0

! L9 B0 x8 A& {0 a) _  q
9 F$ y7 S  h7 L& [clear-all-plots

+ I( h' I/ x9 I1 c" p) J& x: V( s3 t. V! E1 Y# d
setup-plot1

4 y; l* l' Q" Q; H4 t# K3 @4 P3 O# P7 G$ G+ R: t
setup-plot2

% Z. N9 ]2 H# V5 N
% E3 L3 E0 @0 d0 _9 o8 T, msetup-plot3
2 }9 q) K$ L$ e( ^1 J
end* @: h9 b) e/ E" e: e+ c9 j+ j

4 ?& F7 p. n0 M" Z9 f' \) P8 o;;run time procedures4 n8 }% w8 P( q9 V: ]

! `& u2 _2 m4 }) F2 \# R- Kto go( e) C# t+ s! H+ v

. J' L1 D: ]5 ~$ `3 R- W, s- O6 Dask turtles [do-business]
+ r" V1 G8 U( n/ l
end7 f0 W. h2 e7 B: M0 D* A' y
& ]9 K# C9 H. P+ X& G& d1 ~# R: h2 p
to do-business
- X& d- c! i; |/ D7 N
+ A8 `& A5 }& [' C) a+ f  U% z
3 I$ @- \2 {% ?
rt random 360

1 E' K+ j3 k1 A
  a- Q6 y  H7 ]* m) Qfd 1
% }- J8 w" B) N. ~' j
. m, B4 ]8 g0 T8 U: s# A" C0 i
ifelse(other turtles-here != nobody)[

9 V8 G, b' _! X8 U/ }  x3 N1 c, _0 \/ x$ e
set customer one-of other turtles-here
9 k8 z. G; v8 n

% C3 a0 g0 k. O0 S;; set [customer] of customer myself

% V; y0 T+ \0 F. V: |- @* B$ s( `. C# }. A9 K+ ~  {
set [trade-record-one] of self item (([who] of customer) - 1)" f# i2 c0 k  v8 Q' c0 |) s
[trade-record-all]of self6 s7 a3 w5 n+ ~6 }( Y/ i  s
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ A' W3 l+ a& [) v# _& ^" h
' W6 X4 j. a9 k
set [trade-record-one] of customer item (([who] of self) - 1)
. @5 }* \+ U5 ?+ Z[trade-record-all]of customer
( n( K6 B* B9 B& ~$ [

" m4 `/ F/ G+ I  |& H3 w" Nset [trade-record-one-len] of self length [trade-record-one] of self

6 b% D8 |1 H, E  R6 {9 g5 @' X2 Q0 z. M. S5 I+ T" x
set trade-record-current( list (timer) (random money-upper-limit))

+ m: K: F/ Z# z6 l4 L( ^9 Q& v  f. }% A# Y; w/ s9 N
ask self [do-trust]
, h4 y  z0 B% W0 x;;
先求ij的信任度
$ S- ^5 |; J! `( n8 l4 `9 ?1 k9 x
if ([trust-ok] of self); |- l+ A- r1 w
;;
根据ij的信任度来决定是否与j进行交易[6 l* u. ?9 f( ?, q  n: x5 i
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" z2 V5 O# O7 \+ B1 h& u( v

8 ]. o& u# W, ~& Z) A: {& r[

, H3 i2 C; M/ U# `! H' Z2 H* C, c7 b6 m4 H* B
do-trade

9 I: P9 W6 R' X3 z; x$ ]) j5 Q( `  r7 p0 e, I: _: ?4 Y9 X
update-credibility-ijl
0 V$ N: L; y& j( r, J9 u
7 M9 G% M5 V) ~6 b+ K$ r
update-credibility-list
0 X- y/ `  |# o- s  C

, O# M+ ]' b! s' Q9 N4 c* d) q
update-global-reputation-list

7 R/ F- h1 h# b5 @, F1 r. [4 {* I$ K) F
poll-class
0 `9 i+ U! F3 u& d

1 p0 h9 a* Y0 \" {2 z$ f5 yget-color

1 Y% M& x" E# r1 V  i  |+ b
! O% l7 w5 r% ^- K; L]]  z* O6 ?4 m0 l, f# l9 h+ u

: f# q. A% A( V9 r, p* k0 t;;
如果所得的信任度满足条件,则进行交易
& l! B5 U. t0 D1 L* y( l0 N& S5 T& v: ]6 q5 f* `9 X
[
' L7 l9 `) d& P% g/ r

8 r- q- Q) A# T$ Zrt random 360

7 m1 [# `: N5 u7 j1 l% W: g, |$ f  G1 x8 @4 J" b' X: _
fd 1
' b& y" R/ H6 [1 W% O- I  k
8 ^" |, Q- Z' i# j7 w, l) P/ u
]
0 \0 ]! B! w; N3 t8 H7 z

; \8 E. I0 D# `1 o% uend

/ E( B: W' Y: H6 c  ~; t+ ~
5 _! [, U7 U8 _& {" d* jto do-trust
0 `& b1 U8 ~6 O  q* V' ~set trust-ok False: F7 _  Z) y; K0 B% x4 c
. @& C/ K. n2 z8 {/ ~4 U' X2 |
% N1 ]3 C. d& u2 x$ a# r0 X
let max-trade-times 0
% l8 s6 W" u% S1 O& Pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& ?2 M! J$ H) j% V
let max-trade-money 0
+ C4 v# S- G+ k* e# w: i+ R' Oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- M  I% k. c* x3 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))
  I( x- [/ ~. C+ G6 E
- \1 G& j/ T$ z) t  ?

& o4 g& z' K0 R- yget-global-proportion
! {( U! l) k, z' h5 d, Clet trust-value* ^6 ~9 B( U. s9 X
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)
% @3 {7 a' K/ T) O
if(trust-value > trade-trust-value)- ~) B2 l& t2 i: [3 G6 I
[set trust-ok true]3 I. j0 D5 q6 J/ a9 P
end
' ]' m  v. \+ q; X- [7 p; r! B! }, J6 G/ j+ E
to get-global-proportion# y% {1 Z6 }8 I% [: o6 I- e) b
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ t  W; G% ]1 y) `. E7 Q  k
[set global-proportion 0]5 L- g! g) L  X' F* K
[let i 0
/ h& D9 j2 h0 w- U6 Y% }let sum-money 0
, A/ w" R! |" ]8 @while[ i < people]8 P( H8 K! g0 v3 x
[) p6 m: z7 v$ H$ _9 ~* p8 h
if( length (item i7 }) A. w, e3 L. @
[trade-record-all] of customer) > 3 )
& r: l6 d9 F0 D, Z6 f+ ~( [; M
[
( Q8 J! s& B' b7 i2 Q+ sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* K7 k% N9 _9 l9 N  ~0 O. E: A], [/ U$ q5 r1 W3 a6 q) {8 S) T
]
& e0 y  s7 S9 d! X& b* W5 O! Alet j 0
' M6 H1 @2 r% Hlet note 0: C+ X* n) _8 ~
while[ j < people]5 Y+ D3 @- Q: ]7 C
[
1 ?( S5 Q6 h# I. c* }if( length (item i  e1 W" Z" Q/ o0 ^) D; i
[trade-record-all] of customer) > 3 )

: N1 T/ [; i$ D+ \) `( S# L[
- z7 E! J1 M! cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 v0 o8 W7 L+ B7 N+ T" D& F[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], l" E& Y& p% z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; J( o- T' x6 U+ U" `$ l) Q]
" o) L! o" i' j( t: X5 N]
( S& z+ a% E% ^7 F2 X6 ]4 Jset global-proportion note
2 I3 z1 S7 T7 l6 E) Y]( b4 z$ i) z& f1 d9 M+ p2 ?
end
/ @: ^, ^) n+ Z; _
5 J3 S9 P& X2 I8 f: Z, r  Bto do-trade. V3 u) T, j# T8 _. g
;;
这个过程实际上是给双方作出评价的过程% c% X8 A8 D: \" T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 g3 w! h& d+ {3 C$ ^
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" N' T/ ?+ d% {$ P2 K# Y& Qset trade-record-current lput(timer) trade-record-current( ^% c6 b# d* v, F( u8 R
;;
评价时间
0 L/ g& j( n( W" U; I" h: ^3 dask myself [
5 R- E" d: ^6 g/ ]% Z" C9 e/ k  aupdate-local-reputation" m! X# J6 y& e+ M
set trade-record-current lput([local-reputation] of myself) trade-record-current
4 ~4 O9 z: ^2 f0 [& [5 _1 r]
0 Q! t+ X4 W( x- \# |, rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: j2 D* P- ~; L4 i- y* Y
;;
将此次交易的记录加入到trade-record-one
+ W9 Z! s& b9 P. f& P2 Tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): P. U$ I1 I1 E1 X1 Z. G7 z
let note (item 2 trade-record-current )" R1 a; D+ W1 i
set trade-record-current
( G/ @" `: ?; y& F3 \3 r(replace-item 2 trade-record-current (item 3 trade-record-current))
1 Z3 x* W7 B7 X( e! j
set trade-record-current
2 m" o1 s% Z4 y# K: e(replace-item 3 trade-record-current note)
, w- i3 D& o! ^* _) X8 m1 g' e' t; M
5 y  a+ w' B/ J: }3 o9 ~
ask customer [' W9 z. b& {" a7 M8 o
update-local-reputation' X7 E- U: Z  w$ W+ n# y3 H. h8 C$ o
set trade-record-current% e3 j7 i, J/ B' `! s. v: G
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 E; D! L% z0 m+ G* A8 c( s]* Y5 q" p# i9 F' i  d! h3 A% p1 {5 {
# k; L  G9 c+ Z
0 y# ]* u% R  y8 f6 {. C! [
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 l; i, e4 r2 G0 j0 a, e
; H) b$ u; P' K, J: I% d; f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 [) v  t* l" e, e
;;
将此次交易的记录加入到customertrade-record-all
0 L: q$ s! \! T5 p% m, e: N1 b" [' Cend
) P4 r3 X/ Q4 @# w9 ^; q$ m+ Q0 C7 O( m+ k! P5 \
to update-local-reputation+ v4 Z$ ?, m! U- e! K
set [trade-record-one-len] of myself length [trade-record-one] of myself- A% Y* e! Y  P

1 H) \3 ~5 L- Q) v' l
$ T- G# [9 n! J' ?- Z9 E5 P- m;;if [trade-record-one-len] of myself > 3
% q8 E/ L8 ~) C- G6 F  H
update-neighbor-total
0 R8 T- l+ M, r# {;;
更新邻居节点的数目,在此进行0 M7 [4 u3 `# z% \* w" O
let i 3
# ~! C  k# {$ glet sum-time 0
% Q, X" u: E3 q4 Awhile[i < [trade-record-one-len] of myself]
8 q% W8 f4 ~- Z4 ~* V% Q[+ K3 S+ I  I: w- [1 Y( C1 W
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). }: W% m9 }; }4 w+ i# R
set i: J8 U; I: s; U6 ~
( i + 1)
% t7 s( v1 l& s# M. e5 b: |! _3 i
]+ l; g; P3 D: j# B
let j 3
& H: [1 i7 w. K$ c. Qlet sum-money 0/ Z4 D) t3 O6 A9 e2 K  X+ W
while[j < [trade-record-one-len] of myself]+ t. |: a. ^  S% B
[
2 R1 [$ Q/ ]( [. _3 F5 [% Pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)2 q- R) @" n6 X% a0 R# L; ~
set j
1 H( T: o! p9 R4 N  q( j + 1)
4 `! `- g( L* |
]' [3 R5 b/ q4 v" n8 B8 j  J! e2 z
let k 3. A0 D; ~5 K' g2 G7 {
let power 0
8 Y9 w& d3 v: V& d5 L9 Slet local 0- C# j$ R+ }# T4 S/ g
while [k <[trade-record-one-len] of myself]5 J/ g; r* w" e. q7 C8 L+ Y/ f
[
' F; p1 i  V; [3 q9 Kset 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) , j2 ^; u" o7 |3 s7 b. v( W& B, q$ ~
set k (k + 1)% m1 w- P9 Q8 \& _* ~! H4 k
]
) c3 X8 ^0 [* Z6 @4 T3 c- Jset [local-reputation] of myself (local)
! [6 L" v, @0 `/ F# \! mend0 ]% A1 R7 X4 ^! B$ y$ w

& f& f0 _& C1 V6 D) X% Qto update-neighbor-total5 y1 q( m8 J! Z+ K
: ]# i( {" w8 G) O
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& y# y+ Z3 B% `$ _1 j& r$ j& d* x( p# ^0 g8 r% S
2 O, [0 v! s, G7 v! k0 V8 D
end
9 `0 M0 n/ h* D$ h9 J6 _" g, T6 ?" f& L1 ^1 q0 X3 O! I0 C
to update-credibility-ijl : j) g1 r/ X5 R- `5 F1 o

! m; @! I6 J+ y& q; Q;;
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。
) Z' `2 p" Z/ T! H" x( K* Rlet l 0* t) u8 I. K1 C3 e. z
while[ l < people ]& K: G7 D2 N1 k# z  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
. v9 j: z9 U8 s' O% |" K[
8 e9 j: Z" E* [let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* ^" j3 w* R. i! j  _# Vif (trade-record-one-j-l-len > 3)
3 O6 E* J' A# c/ i$ B6 {1 \[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* ]! l0 `* i( v' _8 d
let i 3
& O, C; w2 d. W7 K$ Xlet sum-time 0
& K! E# o8 w8 r5 Y5 vwhile[i < trade-record-one-len]5 F  I0 A; c" Z
[
' S2 a) n: I0 G& ?0 yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 b! ~$ k/ `) z2 ]/ Oset i4 e5 `! _6 e4 O- g5 Z
( i + 1)

! J, `% p1 T. p& D  _]
- a: _& D/ }9 h2 rlet credibility-i-j-l 0
( n3 p; u2 V3 v& Y;;i
评价(jjl的评价)
0 z/ D" w3 I) x' flet j 3( ]0 o9 |) O: X: R+ Q/ A2 z
let k 4
! k6 }6 d9 [' m6 T- e, H& a0 |while[j < trade-record-one-len]' k. n% A8 c5 {' j
[
0 D) V- c$ X3 F6 K' M- w. Bwhile [((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
, D2 B! K, q4 r0 `" qset 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)
. m/ i6 T% C3 L! a2 d7 T( rset j
6 i" u/ H( s' L, }6 t( j + 1)

) i1 G8 |" Q+ s  e: S; X3 w]
# H* S- e+ t/ y( Y2 ~set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))4 c4 F  B% o2 C/ T6 A

' t  N1 C+ |& N) d

4 J! E$ F1 _" Klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 c# s- F; K0 J* [;;
及时更新il的评价质量的评价
* o, F. s5 G8 k1 S9 `* T6 o8 x1 f* wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 [9 _# y2 z5 ~* p# Y0 P
set l (l + 1)
4 m5 S4 e# s% q/ \% ?4 f: n' T" g]3 @) c* j! H' Z" @
end; L& F9 ?( A6 N
2 Y) u! B- z/ O2 ?# F0 R( a) v6 y, x
to update-credibility-list
- h) l& a$ }) [( flet i 0+ b5 M6 `" W" |& X' Y+ L7 I; a
while[i < people]
! `6 w5 s7 [- Y3 B[2 [. c8 b9 T3 Z
let j 0
" g0 E% G4 ^% k7 |let note 0
! \; x1 C6 f- W% K1 R2 F# H) Glet k 0
" [0 i2 `* C; b- U;;
计作出过评价的邻居节点的数目
1 G2 G3 H& {! G( Y) F+ F6 D' Vwhile[j < people]
  ]9 B! w$ [+ ~! [7 b* _4 z  }) |[) u: a: D8 A$ O& c  U
if (item j( [credibility] of turtle (i + 1)) != -1)& W5 w2 i. w! e7 i
;;
判断是否给本turtle的评价质量做出过评价的节点
: L  ~; n1 l5 \$ P[set note (note + item j ([credibility]of turtle (i + 1)))( }* B! ^, s! F0 }
;;*(exp (-(people - 2)))/(people - 2))]
, M8 a1 |" L1 w" Y8 |
set k (k + 1)7 i* }& [# a5 \+ A/ c% O* ~* `& u
]" ^( Z8 C) o4 e
set j (j + 1)
! F% r! r& j; U  z! ?]! F1 s& ~7 D' ?. P) r
set note (note *(exp (- (1 / k)))/ k)
# W: `8 @% P' m- }5 @! j9 Wset credibility-list (replace-item i credibility-list note)
% D- e" M! v& I+ Q! z* F: fset i (i + 1), \0 _: _! `! C4 M( v5 O
]
; [% v% a+ B0 U4 z! |3 wend
9 t3 n- {( ^# w+ ^
+ m. l+ A2 N; {5 Qto update-global-reputation-list* \6 _7 d1 e% |9 d  M0 \% D4 d
let j 0
. k1 X. \, h( o7 ^; Z! x2 x% j" [while[j < people]
! B; I2 v: |9 d* g2 c  N5 K, f: E, K[. z/ X# i9 Z% v1 _7 c8 s5 ]
let new 0
0 Y; G* O2 I4 ~" J# J5 {% };;
暂存新的一个全局声誉3 Q# H( l* [/ @( z: Z
let i 0. b5 y  Q3 y4 I. _' o
let sum-money 0
: m, u& h5 k9 p2 K/ m9 v/ Ylet credibility-money 0' U: a2 M9 W- ~8 o
while [i < people]
* B- c/ n7 g8 M[
/ V! ?% y7 z& Q: l* K! t7 u- N4 sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 X" c/ b+ T& w3 }/ E4 \( P5 U. p3 O
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). \! Q% q9 s4 D# l
set i (i + 1)
* |8 v1 f$ X+ y& Q, W7 z]7 f# I2 [: C, v- ^1 ]
let k 04 B0 j3 T5 f) X* ~5 H, z# e
let new1 04 c( S+ k' U1 B2 t) l( y
while [k < people]8 |0 x# H: S9 \0 k
[/ |7 ?6 q- g1 j1 C# U+ e' r
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)  r- ^9 J+ |- }% \6 N! U8 F
set k (k + 1)
. u3 N, n3 d* b]
9 [$ @' q3 \$ g$ B& a) @set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% f" a# Z. U( f% Bset global-reputation-list (replace-item j global-reputation-list new). w  K6 L. q1 r! Z7 J1 ?
set j (j + 1)& m7 k0 h7 X5 @0 S5 [. ]$ h
]
7 ~. b' f' Z0 X' Zend
: r9 X" g2 \' \$ Q- h' y0 c( p4 z
2 C- a7 }$ P- K' f& Q/ i5 w' n
' l! o$ M$ B1 D4 K3 o
$ ~( o  K3 y  H  ?to get-color
! u! E' ]9 a" S
% L( A4 k4 m5 {set color blue
, g. K: S' H* C& U
end+ H* A' z- l( ^" ?# Q" u
, Y8 }7 V) |6 e; H& t7 ?" F
to poll-class, G& B) C2 I" k& s4 U
end6 v4 h) w2 X1 d  F  G% Q, H
5 @  h: O8 U$ V% v9 l
to setup-plot13 P; v4 q4 k! L3 Y
1 b* C! h. u0 H! j  f% V
set-current-plot "Trends-of-Local-reputation"

! X: W$ K6 p; G5 l# i  W4 H2 j1 d1 ^4 P2 `
set-plot-x-range 0 xmax

- I& z+ s$ Q8 a
( e/ k) u: l, i7 G1 t% Cset-plot-y-range 0.0 ymax
4 R9 U1 h( _# h$ R
end
7 q  k9 `& J! C0 x3 ~0 D8 c- o) P& z, {* m) n
to setup-plot2
- r( h; Y5 j& v8 N$ H  z- }/ p. K9 k7 t" q0 V7 I: [
set-current-plot "Trends-of-global-reputation"

* k' a. V$ s( a! x. V- x* R6 A& V7 S8 V( ?$ R+ s
set-plot-x-range 0 xmax
* n+ O; Y: E' u# c1 R

4 ?, A- s9 B7 S3 I3 K- ?. _9 |+ Tset-plot-y-range 0.0 ymax
) t0 O$ ^  e, ^4 L. j# k: |
end- b! B$ q- C3 j2 M) F/ i7 f5 Q
8 S! r5 _" N7 ]. @4 G7 W1 M
to setup-plot3
8 C/ `, Q$ Z. \" T; E
5 E9 ?1 I  B6 p% k6 qset-current-plot "Trends-of-credibility"
8 o" u. r2 a- z, g
) a$ N! r; G6 ~& B+ B9 y  s7 L
set-plot-x-range 0 xmax
4 u4 R; @$ b* K) D/ t
4 M5 v+ x, O! f3 {* [# r! N4 d
set-plot-y-range 0.0 ymax

. v: Y% C- V6 F1 x2 {) [end' Y5 m8 Q$ a# s- Y/ J# O& N3 L

  ~, D- r+ a. b" ~* n! Rto do-plots, Y: U0 }8 }6 @( w  m' `5 @
set-current-plot "Trends-of-Local-reputation"% Z2 @! y# Q5 @' z
set-current-plot-pen "Honest service"
5 l5 y9 X, q$ W) c( |end
! k. z$ b! g4 e6 |4 m. V  a
# d- i) ^. u- W) Z% J5 {[ 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.9 X  g# I4 z$ b, Y) Y

1 R6 g7 q" ~3 s* i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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