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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:
9 y$ x/ b6 Z8 M( ito do-business
% ]5 Y- H2 d( t rt random 360
+ G& ]0 p, @5 c! A/ n8 e: n fd 1
3 D: M# Z- F( I* P- Z$ S0 | ifelse(other turtles-here != nobody)[
- q9 A5 O9 Y3 S   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.. b: O3 J7 h: M$ V/ R
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    5 E/ q, H0 ?  s6 s* g, e
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, h9 U1 ^: l" ?. e( y" m7 j
   set [trade-record-one-len] of self length [trade-record-one] of self# a$ x/ O9 U9 p0 g7 Z
   set trade-record-current( list (timer) (random money-upper-limit))
) M8 a+ {& `+ C! H# Y9 g2 e- f5 p( }; _- D
问题的提示如下:: A3 P# w* T$ n) I7 B

7 f, s0 e) E3 f1 Ferror while turtle 50 running OF in procedure DO-BUSINESS5 Z  E8 L2 K8 ]( p
  called by procedure GO
% m$ l* c" V* C) f) @5 O" VOF expected input to be a turtle agentset or turtle but got NOBODY instead.. g, o% T7 G8 N, m0 j5 |8 E2 P1 ^
(halted running of go)' c4 P. _- s( t- T) [  j# X$ j- m

0 v4 e# z/ o2 f: U7 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~~* Z/ y, ?' y' n& {, _- D
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2 p# {5 \% C0 @6 d
globals[
7 Y0 p1 O% ^/ q' |3 o) s7 bxmax: K2 B! y6 j6 x  Q1 B
ymax! k: n2 S# b3 |) x+ t
global-reputation-list
; [- f* G4 i5 Q; F% [% h% r" D( a. f9 v. f* Z
;;
每一个turtle的全局声誉都存在此LIST
' C) K: Y* h( W2 ?6 Ecredibility-list, B  g- k, a/ q6 r6 {* }. h
;;
每一个turtle的评价可信度1 L, C# i- w! p3 J1 u5 w
honest-service
* j2 P$ g" F1 o% ^( wunhonest-service
7 [4 ?1 e( }( ?% v9 soscillation
' E, e* L! j  x( q. v0 Xrand-dynamic7 j' X$ D- O! s- `: y8 `
]
$ k- t2 l9 r6 a' N, T: {7 q- C7 W) R. C- j, ]& P
turtles-own[7 ]4 \+ c) W$ s
trade-record-all! [; L7 m; O) D
;;a list of lists,
trade-record-one组成
; G2 g5 z9 J" y) x1 i3 |9 W5 H. q1 Ntrade-record-one5 i: K+ s5 r/ a' s: ?1 ?
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, D# s; X; J$ L9 ~! o5 {
( w5 ]4 c; o) x
;;[
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]]
$ u7 _4 I0 ^, k4 d' Q8 {! Otrade-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]
1 ]8 f1 V5 W: S; E+ 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
0 I) K$ C( Z5 O4 {! ?, X- Vneighbor-total% o0 ^+ J; }2 l5 h9 Z
;;
记录该turtle的邻居节点的数目3 m& q5 H8 g9 j* i. A& m  B
trade-time
1 A1 B3 O  ?* P3 @) r$ J- `;;
当前发生交易的turtle的交易时间
4 i; o; U/ g/ E' O, b8 v4 ~appraise-give4 y8 c5 [- m7 S5 X% \7 o# F
;;
当前发生交易时给出的评价) g. Q5 t8 M! ^/ T
appraise-receive& F# }# r- j5 t, I- A. `
;;
当前发生交易时收到的评价9 _  `' A* i1 i, ]* X  D& o1 H
appraise-time
8 w/ X* y+ t, x' Z* X  Z2 c;;
当前发生交易时的评价时间: e* G. {' ?: m: f& Q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
' q, M: z6 l. a6 V6 H$ K8 ptrade-times-total
. z1 T3 m/ O: X* c0 U7 X# P;;
与当前turtle的交易总次数. P2 J- P# ~1 ~$ w6 C0 x. \8 l
trade-money-total
" e  T# x8 a! j+ \/ k  w- K( h8 X;;
与当前turtle的交易总金额
& n( B! G3 K0 |' Q. m* Y3 Hlocal-reputation: [6 f' J: D, J! p0 f2 h  s( N$ T
global-reputation
. P) a4 d1 a0 mcredibility7 U+ N# l1 E6 P- n  V
;;
评价可信度,每次交易后都需要更新
6 h8 u( n0 Q4 M4 {6 U" xcredibility-all. w) x: Q& m4 ?. w8 U, 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
- H8 y* l* B3 y- k0 x! k
9 c! H) l+ d0 j) Z6 X1 o4 x4 ^1 g6 m;;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
7 _% P3 d  _7 L) r" S- |% A& xcredibility-one
4 f3 i9 D: K. {! L3 P;;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
& V- V" f" H8 J  k+ b, Gglobal-proportion
8 Q2 G7 [2 W' M+ `. xcustomer
2 E# B% X/ L9 O9 [customer-no7 Z/ U' N) H5 I
trust-ok0 o7 [9 H* ]" j7 }- X
trade-record-one-len;;trade-record-one的长度% h3 i* e2 p" ?: A. w% h, |# B, S% o
]
( k' }9 h9 w3 l+ j4 T
3 s! t  y0 X3 \4 k3 {2 J! q/ J+ @;;setup procedure6 R2 d- S9 L: X8 \  B) l

  ^+ p' h8 x% @3 Vto setup2 ~! I3 \" e4 u( [
" h7 l: X0 Q& [2 o$ |# g8 B6 |
ca
+ O. R2 |& V- Z$ d' e( c: H

$ f' o4 m6 c$ I: I, k3 Ninitialize-settings

4 f: D- Y: T# j
8 W5 \) |) w/ \9 {crt people [setup-turtles]
5 Q! n- [7 }& l
8 T# q6 P, R) b7 A& o
reset-timer
$ o, D7 u) t( P
4 @1 U& }: x, r: W) U5 l
poll-class
: H# e/ W; `( @- D: S: V
/ G* o2 B8 y/ S$ R% O8 ?$ X
setup-plots

  s' H2 q& x. D0 c, U
# r* }% Q( L, L7 ^( |# rdo-plots

# {7 R) N, X/ O. H$ eend$ e! y. c# ~- Z" ?( m3 ^

) Y/ R+ h/ y4 S) W7 {( V6 ]4 Tto initialize-settings# Y$ f. j; u* z& W" `, G5 _) S
; o9 u. a# p6 o& z  U5 R
set global-reputation-list []

- \+ p0 a+ S8 N9 F3 [! `1 b
3 |3 d* _! ?+ x" E  T" o' |: eset credibility-list n-values people [0.5]

  B" \/ N' U1 r( l  c2 H& Q4 I6 m0 K
set honest-service 0

" @: Z$ e" Y4 d+ D! k! [- @
! r9 \& c! ^" b& H" c* Xset unhonest-service 0
9 z  E6 g, _6 f. P
. F+ {. W& E8 S1 x& `
set oscillation 0

2 I( y* ], G1 V  ?" y3 g8 V1 J6 H: B; l/ \# u7 Q$ w
set rand-dynamic 0
5 s# A( D3 F9 V
end* Z6 @, G+ z  f

* m2 K8 P4 w/ p' @to setup-turtles : u& V% U6 @" d6 _
set shape "person"  d- K2 j- P# V, R0 A
setxy random-xcor random-ycor
+ S( Y. D6 j6 K1 m4 zset trade-record-one []
# F. o/ t, E7 [: @
; {" t6 I- }. Q
set trade-record-all n-values people [(list (? + 1) 0 0)]
! Y) \8 q% p* v8 h
6 P! l9 w, m) d
set trade-record-current []
& f" g7 a2 [: L: U+ `set credibility-receive []
: P* g) d4 N6 v9 }& T3 eset local-reputation 0.5
, F( ?1 |0 `# F0 g8 Cset neighbor-total 0; p- @; q: d# h1 _8 }( J
set trade-times-total 0  J, i& @+ V5 h5 \% \" d
set trade-money-total 0
* N  X# h& o$ `$ cset customer nobody% L' E7 I$ f+ g# d) i
set credibility-all n-values people [creat-credibility]
0 b% E* U% f' Y6 i" B9 Yset credibility n-values people [-1]/ n9 r1 p- g5 p1 \( M6 F& @
get-color0 x* @' O9 U: X- w

4 j6 P7 p/ q& m( l8 ?" o6 |end
- j2 B. O1 Z3 }4 w4 R# I5 `! n2 M. _- {9 m/ w
to-report creat-credibility) K+ G% Y: ]! M" E9 Z5 x
report n-values people [0.5]9 n& e, c# e5 L4 F
end
) o; I/ z: |$ p+ q$ c; ^$ U: I; u5 c; P- Q3 `! b, B
to setup-plots
! H; g$ e/ T0 W0 m$ H' _; a* T6 {4 G
set xmax 30

# S& X) W6 B8 d4 M% o
6 T! N8 U/ l, `, h. x4 Qset ymax 1.0

; h, ~! x3 z: c/ k
' y$ q' K  V( J' `) Eclear-all-plots

1 U0 _5 \. T- @2 k  x; n$ B! D. K3 M' Q
setup-plot1

9 G5 @/ O+ r8 d) A: A, C3 z2 V5 w6 h  n0 b' g9 t
setup-plot2
( A. ^5 _; I3 n; h- g: ]9 w1 `
! N% D7 Q' O) w' I0 [/ r' ?
setup-plot3
$ A( k# l, B. ]* \- S9 z3 o
end0 R7 M/ R; [$ P4 N* [) e0 K# f

0 ^" _  U& p6 |6 ]) e;;run time procedures
0 O' K* S' M1 Q7 J1 L2 |8 h( N& ^; f
to go
" S; j6 r! _1 B  P: w4 S8 G# D3 ^8 p% e
ask turtles [do-business]
4 l( A6 c0 c% s( n7 o) H1 Y4 m3 L3 d
end
8 T1 B/ r  G$ d( f0 t& n2 P& s) Y
to do-business
: A/ v# V8 X# }# \

4 N1 D" |- E$ K2 w" H! Z" u7 |8 }1 ~# G0 l8 Y1 y
rt random 360

0 d5 N4 l1 r8 x& y
* a) f" q( E: M% Bfd 1
9 t* s. j; B; I/ _' X

: o8 x) ?" v; _ifelse(other turtles-here != nobody)[
) V4 y' ^6 c5 R2 O8 n6 P

$ R0 G$ h; j0 S) v, J6 Y3 pset customer one-of other turtles-here

; h& j9 d6 \3 {# T6 E
9 ^( A. V- u, C;; set [customer] of customer myself
9 Y% C; ]* L3 P* a1 I5 O5 `. f
+ a5 ]# O, P. I
set [trade-record-one] of self item (([who] of customer) - 1)
2 _( l7 C% y! j0 [# m" n[trade-record-all]of self
. n0 k( [* Y! O& x+ ~- p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  w" a: L  B1 V9 @' W  O+ v' r
' P/ S3 Z1 y- ^' i# j. @
set [trade-record-one] of customer item (([who] of self) - 1)
) G* M4 g  ?7 E. `! x5 ?2 g( V[trade-record-all]of customer
% F2 Q# G4 Z0 {6 E$ e* y

0 E1 i% ^( l3 H: k; {set [trade-record-one-len] of self length [trade-record-one] of self

2 L5 M" P$ V9 L2 H" _7 D$ c' t$ ^% F/ B, U' u3 }
set trade-record-current( list (timer) (random money-upper-limit))
( Y6 E% w+ `4 X- K

2 @' s7 S8 _4 z5 @( Z8 Q  Nask self [do-trust]
" X" y9 k  [6 Z;;
先求ij的信任度
% y+ Y- T0 W. Y2 B; i$ s
  f  k' r+ r! G0 f  uif ([trust-ok] of self)
# |" J, U( j8 ?1 F;;
根据ij的信任度来决定是否与j进行交易[* F  q& K4 m0 m: _
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 l3 a9 b& Y. a

. c( O( z' S3 c[
- n$ x! [: `' `  y  o5 j

2 H, J2 A% j' T1 ~* `do-trade

  Q. r& D& g- Q
* C( h" T5 p* i2 F4 W: u* Z1 E% Fupdate-credibility-ijl

: ~  m8 U- }( B7 ^9 Y: b! l% U( p0 ]! N, u# V% s3 s& ~/ h/ |
update-credibility-list( O4 G9 G. V$ `9 N8 S

; `, E* Y; O' k) z  i4 t" P* M* I: D
  w7 H4 L  m! X$ G& m; B, d+ k+ D" fupdate-global-reputation-list

2 t/ W. }0 r" f1 _
9 J' O, C8 V0 f' R6 X: W8 Qpoll-class

  Q  x( m  C  b3 X7 k* x. X5 z! T9 x" m
get-color

' C+ Q; T: T  t
! e8 L# R0 d* X7 f/ g: Q0 Y]]" J. A" t8 [5 K3 p8 R2 B

  `0 F8 e6 k: z1 D8 O;;
如果所得的信任度满足条件,则进行交易- g9 z/ Q5 C' ~: D1 K+ L: T

% G: f* _; \8 o* }, }[
6 @% S  v; E1 m$ O2 a

( Y9 l0 ^/ l( U6 K% [3 |rt random 360
- o* g1 j* m+ q/ U: E! T
" g+ `* Y( r3 e" {
fd 1
+ V( k- {; Y$ @* q! F

) d& d' k  k( v' h/ b0 c& r]

4 t9 S6 L" `3 w) j" L+ N3 V  z4 U2 x! I" Y
end
* U6 {6 y* F7 ^& ]$ `
; u5 o: R, W3 b) j# ^: j1 R! j3 r
to do-trust ) G; ]! h' k, Z* O. ^7 A$ e
set trust-ok False, d, M2 Z$ P5 x- C
& U1 u0 H- R7 L0 J1 t6 e
. _* b% _' D% J& H  T  P
let max-trade-times 0
) B* m8 L% R! K; G" cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 r  {1 j) ?7 f7 {9 dlet max-trade-money 0& H7 E7 `5 R- _9 p* q/ K* s5 @
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 g7 D2 h7 D) F4 l+ F: D! p0 g7 _. }. N% x
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. k6 g+ }) R% t: N, ~" _, o! u/ H& M0 @) Z  P4 @+ J+ N1 U7 x- _
( D& h7 |$ d/ k# ^
get-global-proportion/ S( e0 s# l# E2 [( `8 O
let trust-value
$ t3 I" s2 l4 I% Dlocal-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* m9 l4 W$ S; p1 \9 d
if(trust-value > trade-trust-value)
+ @& i. z  K0 z[set trust-ok true]
" t+ t; v8 ~9 B" [: |$ l3 \end, M3 b- z: E5 s' U- b% a6 t

5 y. q/ F6 x: T, w$ E4 Z( \8 nto get-global-proportion' F3 X2 K& [! j4 g- f5 g
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), R6 |# x* j# t$ a0 P
[set global-proportion 0]
" J! h7 G- @* S* ]$ i. Z[let i 0
. i7 C# B6 [4 e- Tlet sum-money 0! n6 J* N/ T. T( P+ F8 B
while[ i < people]
2 c4 f+ q+ M6 S$ L* _% Z" Q[, u+ @/ H% G: a, v, m% W: o  d
if( length (item i5 ?- H0 L2 p/ z
[trade-record-all] of customer) > 3 )

/ k5 u0 z. l) b4 I+ \[2 A* n2 ~5 V* e
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& `$ x7 s9 W# ]& e+ ?  n8 r]& n$ H8 m: Y1 l" L9 d
]
5 d" C7 M9 {0 X7 Zlet j 0
: @, \" c, U! k0 _let note 05 t% o9 ~, n0 {, B
while[ j < people]4 V: A! r: P$ j* H( n8 W
[8 N" @0 E# b5 W: [4 y" _3 Y
if( length (item i' {# ]2 E1 D+ w) g6 L
[trade-record-all] of customer) > 3 )

2 ^$ E* K9 H3 Z& c! S[
+ V' F( \  t# E, Lifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ I  L; x$ g0 O2 C[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. ?( X! T1 R7 S9 C5 j  g8 s1 a
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: `# l% q2 T+ j9 c/ V5 D: X]) s! A+ [* c$ x+ I$ b
]$ B/ S5 a4 L! ~  Z% K& S* N  \
set global-proportion note
, d; g0 h0 ]  P3 R9 G]4 p' z. Y" D: V8 \& |) e. Z3 T
end! }! |/ ^0 l0 a: q
5 i) i8 M5 _, Z7 \9 g9 e4 n
to do-trade
# b) S8 N$ O1 w% X6 z- F;;
这个过程实际上是给双方作出评价的过程
; T9 [- h. r, s7 O  t8 O/ ^3 r' ^% Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' F% F" H8 f- Y# t  W- d( ]8 U4 ]1 ?0 \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; Y, {$ g" @0 t# j9 R
set trade-record-current lput(timer) trade-record-current/ e9 h% e4 Y2 a  |1 H- j) J: c6 p
;;
评价时间
/ [7 @+ z9 o$ nask myself [
' d+ y) K  e9 y3 @( }8 Jupdate-local-reputation
5 F+ a) \) V0 _; A( L0 I4 Uset trade-record-current lput([local-reputation] of myself) trade-record-current$ h" }% ^" P% b" N2 j- o
]
4 D$ C+ H* O1 ^  x( rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 u, `: ^5 V8 H3 `0 a5 d;;
将此次交易的记录加入到trade-record-one
% Z/ ]  C7 r1 j  ~' o9 z4 {set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  `) @5 b+ l& h1 X* i0 Flet note (item 2 trade-record-current )* n; L# Q4 m9 L) V: {- t
set trade-record-current& j: ]: P* C/ C5 e) {5 f
(replace-item 2 trade-record-current (item 3 trade-record-current))

* M3 n" R* n+ L$ m& `7 dset trade-record-current+ F" w5 `7 }: x. C) C( T* j
(replace-item 3 trade-record-current note)( ?+ }* I9 L( r, c6 g8 |' Y' M

. I9 M( ~! A2 L8 I( {3 O# O

6 c( ~: c8 i! Y( Oask customer [/ i2 s! v) }1 ^* n  s) o3 i; C
update-local-reputation# s8 ?5 ]/ W2 H) {( f3 m0 o
set trade-record-current
/ i' C2 S( J. _, Q( t9 \(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. o: z+ r* x+ u. b' \]
1 P3 P; L2 S+ X$ R7 m7 S1 w# k
5 F! F3 g- C$ a* Q6 t3 D* G
( W9 M! K/ z- M1 k
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 ^" A8 a7 B% q9 n( Y  u! ^4 G

1 ]5 j* u5 f5 i% iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) f/ c4 u7 O' p3 M
;;
将此次交易的记录加入到customertrade-record-all: Z4 t; }8 E. P* ~
end) K$ U, y2 m4 Q( ~5 p  l

2 T6 D4 K' u' q$ G- `to update-local-reputation1 A" V' R0 {$ W  D6 W. i6 n
set [trade-record-one-len] of myself length [trade-record-one] of myself
) i& f; z6 n& \+ n/ {, P
! h9 G, m5 _1 x  T! A0 M4 ]4 Y8 i0 v# f+ E6 p- {
;;if [trade-record-one-len] of myself > 3

, ]% g$ q/ ^4 _/ U+ s5 Rupdate-neighbor-total
2 \/ Z& L" g( \+ y9 d% q/ D;;
更新邻居节点的数目,在此进行" E6 k0 W- W/ C6 Q% \
let i 3, v" U& D" H" m/ i  o7 F. M# I9 I
let sum-time 0
) E2 Y0 d( @" ]2 e0 S5 Bwhile[i < [trade-record-one-len] of myself]7 o2 T6 s( Y+ ^2 g3 ?
[
- P! r7 g- T4 eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 u1 Y1 {/ m) v& ^8 M
set i
0 v8 N* r: {5 h- f( i + 1)

9 d# q) X5 M. d/ ?' Y5 D]
7 D2 ]$ \+ C" W) rlet j 3
2 L: A$ z1 \8 B1 [, A( J4 d1 {( Ilet sum-money 0
. R" p, l& L2 U- Jwhile[j < [trade-record-one-len] of myself]
5 H  T9 Y$ ^; \4 ?  e; Q, _" U" g: N[
0 L* V6 x) q( O& G8 h( H" I. Bset 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 K' A6 u$ k' u, ]2 Lset j3 `1 i3 T2 P5 ?8 k! D- Z1 m4 B
( j + 1)

. ]7 T, V2 ]+ P7 u! j$ Z4 H]
/ i' G. t6 j. J0 b; F1 olet k 3
' u4 n1 Z$ H) f& [# b! z4 q7 Rlet power 0, Q' U- |( \" o# C+ {' {
let local 0
' V6 c) g( w2 owhile [k <[trade-record-one-len] of myself]
7 A+ H& s, C; c; M; r- A, t[
1 \' u; N% Q1 f7 n1 b$ iset 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)
' K2 K0 N$ E& m% aset k (k + 1), x( F9 {" ?: E5 D4 {9 ~6 T% K
]; K  C: Z# u& G6 f
set [local-reputation] of myself (local)
) W, x/ P3 L8 f9 Rend1 ^) C  D3 W. }

% Q8 g" X  Q! z2 R+ e' ]to update-neighbor-total& W* R1 {) \  ~
8 P# N, O5 J' s3 r/ q( F
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: R) a5 g1 S. ]) w

0 c: s! `* [+ L% z0 [
+ O$ n* y" W8 z
end  J: D2 p% g# p( V3 m

7 O: {3 }# G$ O4 x3 |to update-credibility-ijl 2 n8 }+ r4 T9 v

: v8 h& {6 R6 R8 G8 B5 W/ Y# ~2 I;;
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。. n, }8 y. [! t5 q  G9 h9 F
let l 0
) W/ }: D/ H/ @while[ l < people ]) E4 W% m) R1 g1 Q8 @! @. f& n1 |
;;
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7 f/ x5 b7 {0 l; c* @5 L
[- M" `9 x. V4 D
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' r: Q, _# T' X: L* L) @9 n% z( E
if (trade-record-one-j-l-len > 3)
/ d5 j  ]( S, x' z! ^" y3 T2 }" L[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
- f! g5 z2 p0 v) b4 D& w4 x/ llet i 3/ i, [$ B( Z, L9 y2 W  S
let sum-time 0
% ]& |) m* m. n2 ^$ v+ g3 wwhile[i < trade-record-one-len]
8 Y% }% w) V" c7 T1 \, D0 S/ r[) j2 F/ `% W# v  P0 l! W3 z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ B% V2 ?9 O0 iset i. L: J; b7 E& E. @  T0 E6 l
( i + 1)

7 ?# }- k2 b  F8 _]5 t8 Q# M9 B& b* i
let credibility-i-j-l 0
; p( c) L" Q; n; K: L0 e;;i
评价(jjl的评价)
: s: N' \2 @6 y9 Y* slet j 3
; L. F3 `# ]' V- a, j; `+ C& klet k 4$ f2 B2 a* M0 _; c7 R
while[j < trade-record-one-len]
2 o4 V- i" b6 \  L6 j6 ]0 N' w[
+ `0 {. P$ U; U- x1 L  v* 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
# V- g, J  ~! g0 g5 `6 F1 S. kset 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)
) E8 k: F! r5 m8 N. Jset j
8 r  D6 Q0 p1 j& J3 r( q( j + 1)

' i- g# g4 c2 l]* ]1 }$ w' p' K$ l
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 ))$ L2 V3 M4 D* G3 N9 W
4 ^+ q- r0 W# }! P1 h# e
+ t/ k5 T5 [& t2 t+ K8 M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' h/ n" f* F, W1 O8 z( x
;;
及时更新il的评价质量的评价
: [$ e' [4 ~. W1 ]set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ h2 w! N7 m9 x5 n3 l3 [" ?
set l (l + 1)7 O9 ~; d: g5 z; E( e
]
, Y  j4 j2 b2 G8 v) ~end! G, C1 x7 x6 m8 a
& ]! @; h* ^8 j- T' L; k! e0 \
to update-credibility-list- D( m# x0 ?- S$ K2 O( b2 @  K) P2 h
let i 0
' M4 H1 o: F8 T: D' l/ r3 mwhile[i < people]2 y1 ]: s( I4 P' B6 J- \* ]
[
+ C1 O' D( s# T6 Nlet j 0+ o( [' h" U& Q; G
let note 0
7 N8 a8 z" ^4 K, i8 W* D) K$ @let k 0
0 C/ v6 t- D8 E4 m;;
计作出过评价的邻居节点的数目
: ]" U$ S( x2 R2 swhile[j < people]
  v( C: Q7 H6 k, v6 [: v[
; C$ S/ E0 B+ Hif (item j( [credibility] of turtle (i + 1)) != -1)
' }2 r6 b: V+ S" [;;
判断是否给本turtle的评价质量做出过评价的节点2 N) v. k6 e, j
[set note (note + item j ([credibility]of turtle (i + 1)))
& t% {; J# w: @( [3 {# L; N;;*(exp (-(people - 2)))/(people - 2))]
0 S. I" k2 J! \* w
set k (k + 1)0 E) _% P: H3 e
]  Y) f$ @, \6 _& D: Q3 N
set j (j + 1): r' K- X- @6 n
]" h4 [+ y, L' @, z; `
set note (note *(exp (- (1 / k)))/ k)) H( G& ~+ ^3 d! D0 ?' {
set credibility-list (replace-item i credibility-list note)
" |7 a9 a# Z8 C" }- D4 _set i (i + 1). g' T: C4 A2 X7 p4 u. p8 K5 ?6 y
]
- ?& g" g3 [' C% @end
, `% b4 u+ ^$ e' \+ w: s/ A
1 O( ?3 L$ `! w# ^* zto update-global-reputation-list4 i& G* @9 q7 ^" ^; |5 l7 y
let j 0
; G9 e; |5 b5 Z) }1 U4 Ywhile[j < people]9 C. h* l: C; s+ E& p) h5 j% m( O$ v
[+ Y) Y3 ^( V( U3 n
let new 03 b) I# A  ^) F) v& q' ?6 R
;;
暂存新的一个全局声誉6 z" C% w- _7 U4 m1 S
let i 0
: w+ t: w. O2 \% Q& H' Y0 X" Q' rlet sum-money 0! S2 A( C- Z- _- t+ O1 E3 y
let credibility-money 0! z/ r& `# B: _" s! C* N
while [i < people]
, i4 X6 F% U/ k$ B- A8 e[3 L* v8 L6 o7 k) q6 \# C7 y- J9 m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 }( M# w- b" tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! ?0 g, p+ G! [* p5 _1 X  ^set i (i + 1)/ Q( b# c# J- e6 [
]$ y0 D/ r4 ^! d' q; j! ?
let k 0
; I* O) d7 y: z6 V; E) q  s$ jlet new1 0
8 i/ y; e3 ^* F8 V1 s) lwhile [k < people]5 H* c% }! k2 `& h
[
9 m" e  m3 v, dset 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)
) u7 J" ^+ P- i4 s" Z1 D1 _set k (k + 1)! u) M' l& e7 y  }" {
]5 t3 \3 p/ Y( a1 x1 _+ `
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; o: O# k3 |2 N2 \- Z
set global-reputation-list (replace-item j global-reputation-list new); z) k' c# l+ g/ S1 u6 T
set j (j + 1)
# t6 U6 K% T7 m+ {  ?  k7 q0 N]
2 n0 s! Y' d4 ~+ wend
& M$ L2 q8 c$ @8 G% N1 [( Q* |0 ?! V- K5 ?* B( D. a% e. t

8 r$ W6 v+ Y. G) x/ c/ X( ]
5 Z" R* N/ @$ e& |' `9 q/ Rto get-color
2 K4 d' O* X; F- F/ D0 I2 n* d6 U
. g1 C& I2 Z7 x0 T# U* \set color blue

* J$ ]0 {  r6 iend
" V6 \6 _/ H0 }  S- D0 j+ N& C8 u) S3 y) K6 N
to poll-class' r6 X2 F& a3 m/ g9 T7 d$ O
end) {6 [( a% n9 D! S0 e7 X! c

8 [: n; r4 X5 z( @+ d% Bto setup-plot1
2 @6 |# M% a' K& A8 k0 R* V) E. H: s
set-current-plot "Trends-of-Local-reputation"
- Y# [* c, Q) a9 U. ~, v- ^
  a5 B6 y/ C( R& ~1 M% c
set-plot-x-range 0 xmax
+ M, D1 R  N8 _6 t) H

9 V$ A; W5 v/ l% g* b  }set-plot-y-range 0.0 ymax
) L8 Y- h& @/ A! N5 C$ V
end
% T- A: R! j4 D
1 r% ^% g3 @  v7 q; M0 _/ H- i* Lto setup-plot2; i, {& I5 G, J- r: w
6 R0 ^" U7 B6 B( E  G' Y
set-current-plot "Trends-of-global-reputation"
6 J: k. Y; F$ D4 w5 f' N
, ?8 ^/ Q; F3 V) [7 T6 N4 q
set-plot-x-range 0 xmax
+ ^, \, E) P! W3 k1 ]  F

' W8 |' }; q( J7 R" v* D$ Uset-plot-y-range 0.0 ymax

$ |, x. w+ H7 m+ R6 X2 Y9 yend7 y3 X. B! m: w6 l- Q9 Z

; ~# q4 [# ]7 j8 v7 P1 Qto setup-plot3
% {( ^# o1 p0 i7 V. N8 Q+ Z4 N6 e" [7 e, B& T
set-current-plot "Trends-of-credibility"

, }# }# k3 A( H7 @7 [4 l' u7 n, g3 ^
set-plot-x-range 0 xmax

3 G+ W& p7 s% ~  z" o* C. J, ~; F% w: V+ P4 h
set-plot-y-range 0.0 ymax

, ^: T1 e8 n' \2 @: |; cend
) h$ P- A0 l4 j7 q1 z) o! Z
5 `# @/ h7 B5 S0 R" d4 x" j8 {to do-plots
7 _8 J& R& m0 \set-current-plot "Trends-of-Local-reputation"6 c0 |0 ]  T( v* E. v" o3 I4 [
set-current-plot-pen "Honest service"' o9 e9 G2 _5 ]! v/ S- v
end3 @2 ]0 ?3 B7 u) z

% p  C5 I  \; O4 h[ 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.
; ~: C2 P4 ]% l' E  P# ?- @! g
( w+ x: s9 N3 K- h+ n! ?% O+ \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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