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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:
' Q5 C0 c# e: Q. ^to do-business 1 K, B. R/ f, D7 A
rt random 3600 m- w7 `8 A5 J2 j/ h
fd 1) n3 n& u% u# z5 E% h) [3 K3 }( G
ifelse(other turtles-here != nobody)[' C, e3 L7 R1 v2 ~) P0 k, u
   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.
8 T6 g, y" G8 \" N4 O# e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    / e# e- b3 J4 q3 f! ~+ U/ c# X' x; C
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 N& W( e$ q! E! V   set [trade-record-one-len] of self length [trade-record-one] of self
. l, o% i# l% o2 k   set trade-record-current( list (timer) (random money-upper-limit)), t  E% w' D+ ?
7 g3 C7 [) s1 q  T
问题的提示如下:
! l# o2 Y9 w- H& L! d) T/ K5 q+ E
+ y5 |( H4 e; _( N0 n* W$ g" ~error while turtle 50 running OF in procedure DO-BUSINESS/ `5 e9 G' m/ m1 L
  called by procedure GO/ `- L5 e, C) N
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* C, s  v7 h3 c7 L
(halted running of go)  Q% S4 W  d/ e8 y5 h% W7 s

, |+ u4 d. i8 e( L1 x- @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~~
, `0 ?: W) \% ]; m4 Y5 X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6 u3 j7 V; k4 J
globals[7 u7 ?5 X9 I  E% s/ b% Z
xmax
: i3 R  }( a( Z2 v( W; Fymax: N0 F5 u: ?! |/ Q/ G) Z
global-reputation-list# j' Q5 `! [" X' q, t$ ^

" c; P0 ]& ^& s! b7 H1 d* Z& Q;;
每一个turtle的全局声誉都存在此LIST
8 i: Q( _" Y/ H8 u# k' p/ f7 ?, M- ]credibility-list0 \" N* p! w7 `7 t- m- h# p
;;
每一个turtle的评价可信度
: J+ V7 a# v0 z7 [% U7 B& uhonest-service
$ P9 F3 V4 \& O) Eunhonest-service
4 k9 [$ E0 i% @0 l* E# \oscillation
/ ]- m' t2 a: \( n) O! z7 }rand-dynamic& g/ {8 `2 e8 |* t" t
]; f1 j2 o9 E2 D- X' A9 z$ ^
4 x8 @& S" Q% |/ K) I7 z
turtles-own[) \0 @% T: v; t2 _/ E
trade-record-all9 j* x0 R! D( v  Q6 F
;;a list of lists,
trade-record-one组成/ U2 G6 R4 @1 T6 e
trade-record-one  r; B* O3 P* f
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录' `' J; g* k& j! m. |4 P# D' b
6 r1 o) S/ F6 P- Q$ ~% _, {
;;[
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]]! `0 ?+ T5 q5 `1 u' m, K/ s
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]
: T* Q0 W3 u* ^8 c" |/ C0 G. p8 t! r- ~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
( k' _. _5 n4 aneighbor-total0 b8 d: U! u" Q. M" s
;;
记录该turtle的邻居节点的数目1 B$ x# x8 }" s# F
trade-time
6 a3 G, v3 N/ b, c1 F4 d;;
当前发生交易的turtle的交易时间, h2 m# U) B$ K& i- W" S) W
appraise-give
# c! K  [9 h+ W2 U8 _7 D- f;;
当前发生交易时给出的评价
: {! k$ P* E: E1 N4 u$ T% k- G! S4 Zappraise-receive
- D! y; L) I- f( I- G; X2 ?;;
当前发生交易时收到的评价/ Q5 n9 y4 A7 Q; m+ E5 ~
appraise-time4 N( h& n' ]0 i: P# ~$ X. P
;;
当前发生交易时的评价时间, e) N3 `3 m( j3 H, Y  v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉. i* V: W) [/ z5 F3 U+ s
trade-times-total
7 p. j3 L3 ?4 K5 Q4 U;;
与当前turtle的交易总次数
: ?( N9 [, ~5 strade-money-total" p3 Y- w# y  o: I/ P" s2 a& N
;;
与当前turtle的交易总金额0 F' u- E3 E4 z) F
local-reputation
" G- |9 y$ W7 T  N7 yglobal-reputation2 l  I  M$ w2 ~* S" N/ {9 X
credibility  d3 [6 \& r: X# R
;;
评价可信度,每次交易后都需要更新
8 @+ K- y3 ^" p6 M8 g6 o+ [credibility-all, U: S+ d$ Q8 D: X. b! j, Y" L
;;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
4 n+ M9 g  N( }; A2 }2 J1 G, o8 k) G% d7 ?
;;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( L/ Y3 A% q. p0 L" `! V
credibility-one
% C7 d3 j) Z% z1 O0 Y$ o8 s;;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
/ x8 R* ?2 [  w( Y3 M% |8 ^& H2 zglobal-proportion
: x, J1 \$ N- o& c  X" s1 Ccustomer( m5 I% Q( n: K% r5 I; |" g
customer-no
. \( G5 Y& n0 D1 v! n0 j# U% Gtrust-ok$ g3 E8 d9 A! l$ q
trade-record-one-len;;trade-record-one的长度, ?" `, y+ D+ b9 x* Q5 r6 M' V
]
% V& I/ t& X# v, B* \! N9 w
7 B9 ^7 w& x  F! L8 H/ D& C1 X; l* @;;setup procedure% ^1 v$ ~, X2 h& F/ I( a; H
9 d% R, v2 R) H- @  b. F
to setup
: _- I) b- H; c- z6 F% p, p, d0 K! O( f- {4 Z
ca

& j: a+ w3 u2 \7 j5 i$ x/ C2 B. Y: k, y. _2 a2 H5 E
initialize-settings
% o& G4 _+ r6 e5 U! h# J& z+ C

6 M$ m" o  S; M$ o& z$ Rcrt people [setup-turtles]
4 x. U' L, N: i) p
' {5 |/ L$ m* z0 u0 f( j
reset-timer

5 C& F: k/ ]  R" @) |
2 s. k, f0 t$ @# @7 M& ^2 Bpoll-class

3 V1 o, i" M+ F; V: _3 K  P6 v9 {8 S  C# P1 d/ [! z' n0 n( W
setup-plots

9 P0 e) B( U8 u& b; s; n# l4 p
do-plots
+ \! M) R" I! f4 l* `
end
5 }8 l& f' ^0 B+ ]* F- V5 K; h) ~( o0 Z8 |: P
to initialize-settings
( V. V0 M5 m0 c3 h+ U! {, q  {+ r% N
set global-reputation-list []
( L/ \  I# b; `9 Y: B5 \
7 G% C3 g( W! ]: D& }. C$ L
set credibility-list n-values people [0.5]
' ?1 Z0 `  i  x1 l. p. O

/ R+ P, v2 A4 V5 m! i- ^set honest-service 0
% C( P8 I" p  k2 v; j7 m) e3 Z

  H* b/ Z3 U3 Z. h! a6 J) Y: Fset unhonest-service 0

  S  y; _2 l/ t1 f7 W
& n$ j" q, X" N: _- ~  aset oscillation 0
- p3 H( W9 r* x' l& k$ V

' X: I$ z/ F% L3 Kset rand-dynamic 0
$ w  N' A8 Q1 ?* b2 G4 h
end
' ]5 z+ Z5 j# a* F3 g
, H2 d8 U: A( y# D- r$ m0 G' H* I: Vto setup-turtles 5 Q* {) |8 v* `$ j4 h! b
set shape "person"
5 I9 g* Z5 ?$ d) _* Gsetxy random-xcor random-ycor. X& ]/ ]# O, o& B5 l' v( ~' j5 {
set trade-record-one []
& F+ V+ J' x% G* c0 G

% H& u+ g' A) X+ F, v1 z, v) R" Cset trade-record-all n-values people [(list (? + 1) 0 0)]
; \9 P$ q% I( ~$ K% X3 \! H) y
& A6 [' r3 `. O( w% l. V" c5 N3 F
set trade-record-current []0 A) Z& p; c; Y& C: v
set credibility-receive []
- y) @. `/ U' V! o. y: Iset local-reputation 0.55 ^1 e8 G3 o9 U4 N3 {8 m
set neighbor-total 0
4 L  Y2 k/ J& \. J8 i$ rset trade-times-total 02 M9 t+ B* X" [& g: u5 S, U
set trade-money-total 0
" l% G% S2 ]) n# d  ^5 f, I+ qset customer nobody2 n7 k9 B: A/ N9 m) ^
set credibility-all n-values people [creat-credibility]0 k1 b) Q  U1 j
set credibility n-values people [-1]/ t4 x, R  p# g0 w4 C
get-color; u! [7 X- t" y9 A7 S. g  o

+ N$ X: v$ {* Lend
2 S; `$ P( h9 j' W5 b' V  `
" \) |/ V& \( E; Z% P1 [to-report creat-credibility/ x' |) H$ S% I( L
report n-values people [0.5]3 o( A" D/ i) k+ y
end
! i( w* R5 e: m! s
3 o) O1 p* g8 Ato setup-plots" G, W" @' o) l: t
6 d9 V/ x. A6 ?- W  a, j) t& w
set xmax 30
9 \% C7 H1 l" G2 Z: D
2 S3 H7 i9 F* t  o- y
set ymax 1.0
3 _8 ]6 i5 L8 ~5 g& L

1 F7 |" s, ]& F8 ^4 X0 {. Dclear-all-plots
9 x! r7 t6 d: t/ e* c

3 f- N+ o) }5 S4 T* N! q3 wsetup-plot1

* y; O" {% `) a6 Y. f/ \  F; B9 i- Q/ l5 q$ p9 P9 Z- p1 ]$ w
setup-plot2

0 |1 v4 X3 ~0 S% Q! g: w
6 b) S6 i9 p9 m, f( a9 o; S5 F6 Asetup-plot3

' Z( N  k, d! J% q/ l  D& m, _& bend! p/ G; h; L$ h
8 `; C" K0 [, ]
;;run time procedures9 A' ~, i6 m8 }$ H# c
: {+ q: [" ?( c, c1 L$ `
to go
$ I- u# ]8 e4 n% {, p+ O
4 M$ I+ \, ^3 ^: u& Hask turtles [do-business]

9 n( k- V( T  r! Q3 U$ jend
- f- C' K! m/ q0 p: y: c; N
# w* |% \8 F. c1 Hto do-business + G# S4 R3 Z6 ?3 }! X5 p* W
2 @7 D( u* X& |
$ g2 I, B- k" ]
rt random 360
% x4 G! K4 G5 u% u% d
3 X6 G) t% H) _  {% A. L
fd 1

' a! I" E4 i& K" T/ M0 W+ `  J  M" x3 P) j& V* ]
ifelse(other turtles-here != nobody)[

" M9 t; a/ c2 F6 d. D* I# ^1 @3 \
  I+ j' W6 t7 n; v5 G% Hset customer one-of other turtles-here

7 B2 |2 q5 g3 ]  I8 i$ k+ I, r% K8 v1 @* ?9 U$ O
;; set [customer] of customer myself

9 Y  u1 W) b# t
5 L" ^) o/ r8 S0 s" E9 pset [trade-record-one] of self item (([who] of customer) - 1). q. e2 E  ?2 T$ J# _8 e/ b! K9 {
[trade-record-all]of self
; S% d3 e) `! i- J7 r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 b- ?0 \8 B1 H2 X  I# j2 r8 W( V0 F  e- M- d, P. Y: l# k
set [trade-record-one] of customer item (([who] of self) - 1)8 f5 z% ~. x, @; ^; x* g+ c
[trade-record-all]of customer

1 M- {6 h5 g9 L* d& n+ }  l3 F; X
+ g, K: R4 g% R4 f- zset [trade-record-one-len] of self length [trade-record-one] of self
7 q9 Z3 t) q; j' t2 \
0 }. }* ?; _0 h2 I9 Z1 \/ e. z
set trade-record-current( list (timer) (random money-upper-limit))
9 B3 n1 [" J/ {) m! N1 Y4 L6 O
: g$ u- m: V* S7 [6 l
ask self [do-trust]0 ~% y8 b6 q4 M  y6 V
;;
先求ij的信任度
7 _( s' w' }, D1 j
8 |8 _/ x# O, nif ([trust-ok] of self)9 Y* U2 {/ e2 u, N& |8 ?* [
;;
根据ij的信任度来决定是否与j进行交易[
, }& v2 N! |& _& y( a) fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
( t) d$ v  o3 g9 l& r' G5 h) D% V8 b- @0 p1 i; L
[
2 l+ n$ a2 c& q

& {; x% f9 H% a; l& _do-trade
4 o$ I, N; ~- Y; w, f4 P

. W8 i1 [9 G4 Z4 t: hupdate-credibility-ijl
/ G1 \+ A6 |, {9 i& S  g

" R, E* ?! T, V4 ]/ g( fupdate-credibility-list; R" _$ t8 ^  C' V# R

  @0 P# X( w- o& p/ B, ~7 W/ A8 C' H9 T* X/ a* z" |* S
update-global-reputation-list
/ C. c- p8 [) x/ E; ]( m

: ~! ?4 [% s# Fpoll-class

1 \4 h; ?0 W5 R
/ L, _0 U/ ?1 L/ Q7 }get-color
0 B; v! K: x+ T9 M% Q
/ f- e& M* `7 l- g3 |. F+ D/ \2 ]
]]
' T' D; ?; n  d; l, R& b* ]. O8 O: B  \1 J* P+ ?- k6 R7 C( n
;;
如果所得的信任度满足条件,则进行交易: L; t) {5 n5 G3 z

* Q" o8 d5 d+ N9 u1 Y[

2 S* `) y5 C  u' f7 h" Q4 @9 j/ X% j. u; O% c) e0 k0 d
rt random 360

5 Y" e7 }' t# z  l" o% R7 ]/ o* h1 j7 t. j- Q7 W' a/ Q
fd 1
& b, I6 s3 H1 @& R; s, s: a

% l% J3 Q+ z0 i9 D, []

, n, ?$ P* \& l4 J
; t. x8 {( \; B' i5 Bend

$ k' I$ g6 C& e" A% C8 J9 g5 H. j6 `* N4 L% I: n( z
to do-trust 4 b3 p$ Q0 C! j8 V
set trust-ok False8 n. P1 d! w$ l& t' {/ S3 _- ~

$ h5 ^# W. z" V: R" r5 N
1 H6 k6 s% u/ V( Q
let max-trade-times 08 q5 k2 S) `. s" h3 Z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( S& t4 M6 s3 a  p+ l  K( B
let max-trade-money 0
4 d! N2 Y; e7 k& ^, v5 i% [& o6 lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 j8 I! v: `9 j9 u6 n: b+ Y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 q; k% D6 z$ f, F0 F7 L( T
/ y' H, q# V. Y9 y: ?8 h

, ^5 i" J( O) t" X9 B) i) cget-global-proportion8 F/ @. Y+ F. X! p4 t5 p4 {
let trust-value7 z; m' B( H, |$ m* n# \: m) s7 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)

7 ~9 r1 ]) _0 Y+ A8 @if(trust-value > trade-trust-value)/ s! S/ N+ }% N1 x3 ^" l
[set trust-ok true]
! _  t2 h* v( N6 I! H+ aend: f3 z: h% g* b) r$ x

  I4 ]  f& @' uto get-global-proportion7 t- a  B- A# k5 C9 ?) c0 r+ H
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ K" G6 b4 a. A* R0 J4 H[set global-proportion 0]. k* J2 a' B3 o* m1 p4 u1 K0 G" I
[let i 0
2 t! ~) |! e8 o/ c- Ylet sum-money 0
% U; Y$ n( x! c5 ^9 H: }while[ i < people]$ l% b& O4 Q0 g1 z6 ]
[3 _. C3 `* {8 `$ i" I5 _2 f
if( length (item i
5 G+ l  t: [8 G+ a[trade-record-all] of customer) > 3 )
& k6 E3 `0 w$ f8 {6 J
[7 ^  D' a, _  }+ b$ z3 X
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 @) |* W1 K' A
]3 @2 }- _  N% w' j( @+ w& j
]
5 C% x/ K* f* z+ ^: |7 j3 K  L' [let j 0
6 d, L: l) q$ x8 E' Elet note 0. n2 {8 K4 V8 |1 ?3 p( V) T+ K& m
while[ j < people]
+ `' q' a/ {. j7 a[' X8 C) n+ Z7 U" L3 g
if( length (item i
* w6 P: Z$ G8 p4 h3 W. Z+ m[trade-record-all] of customer) > 3 )

, {" ~- C+ h5 J[
. S$ S0 I; L6 [: ]) Bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! K7 d1 ?) j& c) p  V% N+ r
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 `5 G; g0 P8 J; T$ X# m[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" ]/ ^* B& }- M% G. v4 L: r], a) o; v8 O, a! z6 [* o$ ~
]
' p- B% G$ r" E" G6 N' `set global-proportion note+ |; b( [4 ?, x3 F
]
" j5 Z2 w: ~) Q! @" g+ Aend
. n3 \# n' W# z( b4 L9 L! K$ C
% R3 |* H, P: h% J0 s9 |! c" Uto do-trade
$ ^) V4 l# r, V' b; Y( W  \;;
这个过程实际上是给双方作出评价的过程& `% |1 t" R5 |& N0 n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) \0 o% W* s/ q. a& g. F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: Q9 L! s! H* F
set trade-record-current lput(timer) trade-record-current
3 b) U$ z" e4 {% O' S  f8 Y;;
评价时间7 V" |; v) [/ ?6 j) e: I
ask myself [
6 M. X3 C4 v8 Z1 d! C& uupdate-local-reputation
4 {6 n% L( D1 L& x( ^% tset trade-record-current lput([local-reputation] of myself) trade-record-current! K4 N- p6 P6 I1 _0 S# {) q8 |
]6 x8 Y$ |8 {+ B2 f# g
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 k0 Y: l2 x! W" B9 C2 E3 T& @
;;
将此次交易的记录加入到trade-record-one
3 J$ ]! t% i; Z, i2 p* C' iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- q0 W% I5 t1 P
let note (item 2 trade-record-current )% U8 U8 ]- Q8 \+ @. f( |
set trade-record-current
4 ?  d# N4 [' Y! v(replace-item 2 trade-record-current (item 3 trade-record-current))

2 l# V9 M2 h# n4 {* r, G3 J0 n- X' dset trade-record-current
8 {0 H+ }' V$ A. `(replace-item 3 trade-record-current note)
+ ^1 S  ?4 Z) x; H9 v' ~* M9 o/ l2 D* u- [/ S7 m& r8 B% e
8 M/ t* n* R: p, K8 U
ask customer [& K' z8 H, j1 A
update-local-reputation# h+ e. {& `+ M1 P( y* j3 v8 x
set trade-record-current8 t; W3 q8 Q# _1 `( K% g9 j$ F) U9 N
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% z4 b; _  K3 X9 s* \, S* I]
4 Q6 n" p6 I* ^8 D5 w; t
2 U3 v2 {5 }& _0 v: ]7 X
4 G+ R; ~4 j* b3 S: i5 S+ X
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: D* u& e/ X, N! v% O

$ y1 |, V$ j; M/ U) E/ w! uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 j" Q5 r- n1 m- V: x;;
将此次交易的记录加入到customertrade-record-all
3 p, K# f, H9 lend
' m. L# p3 `  d1 x+ D# L3 Z$ v0 d9 R0 e' j1 k9 @8 H. C! l
to update-local-reputation( j: a) \6 \7 ?2 u( N
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 C+ |6 v# y/ }' K
+ m8 ^8 x2 q7 m1 P1 J4 K1 j; \! F% i
;;if [trade-record-one-len] of myself > 3

) u0 `! Y) @0 y* `9 T4 K" Pupdate-neighbor-total
1 s4 W1 b- U' P( d;;
更新邻居节点的数目,在此进行$ H4 S# S; U% M7 \) r
let i 3
" u/ `6 K( T: w- H; `5 E% S5 x  alet sum-time 0. ~- |* H1 w" k! m
while[i < [trade-record-one-len] of myself]
% x, I; ]1 t: L[
+ h& S# E4 D+ `6 `! L" uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 k( `1 F9 |% Z
set i4 i; A1 I- \) k9 f' H: x
( i + 1)
4 q/ {. h: ?( x1 n/ V
]* c6 Q* a! W1 L' |
let j 3
% h1 h/ N8 c- p* |let sum-money 04 y6 `3 m) k6 g0 o' x" W7 A# Q
while[j < [trade-record-one-len] of myself]) x; g1 P, @) r- K- s9 Q
[. F9 y6 o7 x8 z4 A  @5 z
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)9 ~6 q) e9 }3 j; r( {
set j
# A* s$ m6 X1 ]& G/ E- M" ?! t( j + 1)

! t7 j3 M- x& n$ v]
3 l3 K! s9 j( f7 R" klet k 3
6 G, d- T% Z" Y/ P0 i% h: o5 W" @let power 03 P+ x( @% N, O1 p- P: s
let local 0" @$ ?; A5 d" T# W3 o9 b
while [k <[trade-record-one-len] of myself]. Y* V* R7 y9 F6 A  ^% Y/ Y
[- R* H; L# R' o( U* a% K
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)
$ e( V# e( {0 V. [3 w0 F2 eset k (k + 1)( `1 m2 e+ }% p: m6 }
]
, y! o) _% g4 d# J' Wset [local-reputation] of myself (local)4 b) b8 l+ C' f" U& K, I2 o# l
end
( O" C, G, F+ a/ w5 Q- |7 v3 C/ L) B" |- p4 z" ?$ o
to update-neighbor-total2 M$ @7 d" \& ]7 k. O& P
6 y3 ]6 a8 O* v$ F$ B( {
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ [: k  w/ E$ |4 `. `/ D' j8 x5 U

. a# _4 |' B( M0 d  x/ _* Q
4 \) ?# U* ^7 m5 ~7 r
end
: L4 ?! C" p- p5 V
" f, t) x9 w% z! i7 g$ vto update-credibility-ijl
* x& Y. `- c9 [4 I9 F. B8 q, U4 A# B& N8 E! O; k! p
;;
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。
% p, D& `3 |; jlet l 0
  k1 `' a4 k& l/ V* L5 F4 z  mwhile[ l < people ]
( R% B. y* M9 j2 U;;
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
( z- I2 w% ?: U3 {* M[
5 C1 i" j9 j1 x6 ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 c! C2 [' m, r3 L& J; k1 ]( x( zif (trade-record-one-j-l-len > 3)
0 Z- v$ O! b' J/ N9 p$ c[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' h# }% s' {1 A  X8 y( }
let i 3
# k, R) f0 K* `4 {let sum-time 0/ @' G1 a. @: T* p) V# i
while[i < trade-record-one-len]
' ]; o1 U; |, }* w[- P: ^6 r6 |( t2 v7 R2 \
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 D" a  q3 r6 Z# k% Iset i+ c+ J) i. v' r$ I8 s
( i + 1)
5 i' E# h& @9 R8 |' a. D# {
]
4 Q9 s- [- M: ]+ }* G( U$ L7 ylet credibility-i-j-l 0- u# W; ~  \. z1 b. B5 Y, u+ |
;;i
评价(jjl的评价)7 D: r5 `. \9 |9 I2 x" b( v' ]
let j 3
: K8 \5 j. \4 u6 m) e6 o7 hlet k 4
5 H( d( M: h$ {4 cwhile[j < trade-record-one-len]
5 h6 _0 w( z5 ^4 l[
' L9 m' a; g% s5 Jwhile [((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
( I1 M3 E' j& m1 t$ j" 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)4 F6 a9 r1 z$ N/ u( d
set j
, ?3 @2 Q7 [% d8 s( j + 1)

- v0 E! U0 Y! d2 Y$ R! {6 }- O]
! s* [+ \& a, iset [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 ))
7 m  B9 C2 G& J$ u2 o% ]# O! ~# p: N
7 U0 X7 Y, b8 R! e( g3 R; l
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ T& s. a6 h. D' ~  e' |. x;;
及时更新il的评价质量的评价
" t4 }" p; X8 Kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ J% u% v$ x2 g, v  b* `) L( j! |/ g' ~set l (l + 1)
7 G8 y9 h1 I3 n9 Z9 p7 K]( O. ]6 G/ g: V+ g5 @
end& m1 T+ q2 X7 j! E
4 g2 n% m. c/ |; S7 @
to update-credibility-list- t) x' c! {3 ~" x  \
let i 0! b; U$ j4 Q$ _' g
while[i < people]
, H: L- N! k- o/ A% E& Z[' u! S0 t* L4 [& s" R
let j 0
. R2 \5 `# o$ W% M- k) b6 j( K2 hlet note 0/ t: Z& c2 ~1 d1 ^
let k 08 O+ u' P. H) L* D8 O  T
;;
计作出过评价的邻居节点的数目
3 p: S7 I1 i+ u5 N( Pwhile[j < people]8 Y6 ~9 N$ B7 r* d' y6 q1 e
[
. ~4 b4 Z' e- }if (item j( [credibility] of turtle (i + 1)) != -1)
* N- }4 b1 J. T;;
判断是否给本turtle的评价质量做出过评价的节点' T4 A5 }+ r; P8 [/ l; o( z
[set note (note + item j ([credibility]of turtle (i + 1)))
" J8 q! e/ {" y: v( S) M;;*(exp (-(people - 2)))/(people - 2))]
( H2 k8 e1 K6 E. U
set k (k + 1)
4 Q3 {) t; w: W6 v3 O]
( [/ y, Q6 Z6 w6 [4 b6 Z9 ~. gset j (j + 1)" n' j0 P4 z1 L
]
6 S' x% }! |$ G! K- Eset note (note *(exp (- (1 / k)))/ k)( }0 K, P% d, A# }7 u' f
set credibility-list (replace-item i credibility-list note)& Z+ W  U  t; o$ m* @$ p
set i (i + 1)
& E* Y$ S) s) R7 i]
2 L0 f3 f2 p0 j( Rend* f6 y  N; ^; t* O
+ c, q: g6 z8 f! R
to update-global-reputation-list
" ?+ N9 k* M- t% R$ e! Rlet j 0
9 ?% Y* T: w- U9 {( g) Swhile[j < people]& f9 U2 L& Q; i- O3 _& ]
[8 V  e, V* \3 p/ s8 b
let new 0
% X% M2 s- r8 v8 q0 O;;
暂存新的一个全局声誉
/ m  B5 w6 ^) N1 v* Glet i 0& w# F% C1 X% x) [
let sum-money 0
7 {: @0 g/ h* U3 ]& Z% mlet credibility-money 0
0 v! R! d6 N- z& ^' Pwhile [i < people]: p" _+ j: `- w! N0 m& o* h
[' U2 N  ]9 S! ]! j( t) h
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* w# @% f0 I* X) U. I
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ i+ V( t+ g  R# o7 W; V( M
set i (i + 1)
% A: j/ O# V& X8 Z" E]4 S1 ]' L5 {+ s; l9 f1 m3 g+ S3 y. l
let k 0
$ M: O; e: u) E3 @let new1 0
/ D; s) x, x+ `7 j8 fwhile [k < people]8 @" `$ K6 ^: @) H! t8 `! T
[& s/ q9 I. i1 q9 C- @8 [
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)
6 L, T; k! T1 Fset k (k + 1)- e7 O" B& @5 ~
]+ k3 `# j- i' _- O3 z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 }' P; r) o9 O7 |4 _( i2 A4 Bset global-reputation-list (replace-item j global-reputation-list new): r- |) i0 K8 h) ]7 K! b
set j (j + 1)
% H, \( T6 Q( S# @$ Z( p% x0 ?]
1 ?1 Y. @5 c' |1 k5 k$ P1 Jend
& [) [/ e. M( u: I$ H% L1 n) q1 p+ Y- L, U% T

) J) {6 m9 d; T: j" [- P9 `' m
6 e3 M5 J/ |6 g7 Z' t! D6 Qto get-color  q" F9 Q4 D. }( p5 m
- _; t0 u+ v! k
set color blue

6 f# P' S& \( b/ y/ W' D2 Wend
2 u/ L; d+ X2 {9 Y6 A/ G! N
+ z1 ]0 P& s5 Q% p) {, R4 A4 kto poll-class. |' b, d- _+ P' h, B3 Z8 b* O
end, h$ M; i4 X% `& F/ B6 v

0 M( i2 R" ~0 y, w& ^to setup-plot19 z6 x# R' W7 Z5 @
0 G/ V9 O4 F4 Y3 {
set-current-plot "Trends-of-Local-reputation"

2 J( K# g" }& P4 b/ j4 U% p! r. @$ X3 |3 g& c  ?
set-plot-x-range 0 xmax
( c+ [8 b* R3 U, M) N' o: Q6 _

! H. x$ t" j' X6 w2 Iset-plot-y-range 0.0 ymax

4 W- E( N4 J* s% d4 W  xend* x  o7 {! p: U: v
# C' e  |, b7 e' L
to setup-plot2; R( h6 S7 Y0 G5 n  Z

: p2 ^, q- c& p% X7 hset-current-plot "Trends-of-global-reputation"

9 t6 J1 X3 h7 s! e" y) |0 y! A: k8 |- v3 d3 |3 v7 f5 q) [1 S
set-plot-x-range 0 xmax

* v7 J: R+ B+ c& f& \; V* g0 W5 g$ @  O1 {) p6 L
set-plot-y-range 0.0 ymax

: {; u) d+ g2 T' U0 oend9 G( G% ^9 u: w3 Y4 X) A0 P( x

5 @! y6 H% i+ d* Jto setup-plot3
5 T% ?  k' _5 p  [) q$ i8 }, U/ W8 Y8 r
set-current-plot "Trends-of-credibility"

  W2 E7 _! q8 O, |3 |& f8 j! L6 o& q" E& E
set-plot-x-range 0 xmax
& e- `& Y/ X# W: S. n

8 Y9 J6 p# w! A% J7 x" S1 d9 Bset-plot-y-range 0.0 ymax
  X% ^( Q: D5 u: G' Q
end& Q, C* B9 P2 \! j! [

9 p, N9 R* [) U. I# _% o; dto do-plots
5 U% B  v# e. p7 ^+ X0 f6 zset-current-plot "Trends-of-Local-reputation"2 j  u2 y% ]5 I8 _, R
set-current-plot-pen "Honest service"4 a) Q( p1 f- d# r( T0 h3 F2 i/ N
end
4 w. s+ H3 H# r; Y% s1 l! F, @3 U& p: W
[ 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 {' V; b) j0 F7 \

  Y% u% m: j6 Z6 c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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