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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:* e* _) Z7 q6 T
to do-business # x4 t! e& \+ f
rt random 3609 y# e& C3 A" C' S# ~5 q2 @
fd 1
9 o8 e' k; x; O5 O: Y0 X ifelse(other turtles-here != nobody)[1 |- B# K6 J( {, b( T2 ~
   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.: `% I* Y5 L" A5 f. x% r1 X. I
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 V. \. U& Q  ^( }6 X0 d, n' ^# C+ z' U   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 K2 }( W3 a! C( L' F   set [trade-record-one-len] of self length [trade-record-one] of self% Z$ G$ U6 W- e# f$ o; `- l
   set trade-record-current( list (timer) (random money-upper-limit))  f9 B; e  ^# L# D
* N+ j. O' b( P- e
问题的提示如下:
  h- w4 a4 [, G* Q
9 X3 C1 L% @3 p6 {% |1 zerror while turtle 50 running OF in procedure DO-BUSINESS
3 y+ U; F% Q$ r0 q5 |7 ?, Y  called by procedure GO
9 e; b: C) u3 o& T' {2 [/ O+ KOF expected input to be a turtle agentset or turtle but got NOBODY instead.
; v3 C: \% M9 i9 \
(halted running of go)
0 t# D1 C* b: f! M
, B) E8 ^$ F1 [9 u9 n) l/ x* V- a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 s% g3 I! y* w' M% p) t* |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
. v# ^3 a2 C4 y% |* vglobals[
1 a# c1 S) r* r1 P. Mxmax
( i- H, g8 H: O$ c. E" a7 t* ^6 C8 uymax1 F$ T3 Z6 [- R/ v, @
global-reputation-list
- r. x" f7 e0 L) m1 g# V% J2 a" M" }1 \% E. Q& z% X
;;
每一个turtle的全局声誉都存在此LIST
- q1 J2 c, V' @# [/ _credibility-list
5 S0 K6 o" M# n4 x2 m. j" _;;
每一个turtle的评价可信度" p/ C$ ]. ^- S4 B; {+ @, V0 a
honest-service
4 o5 g6 X3 L- U. w' _5 Q# n, Tunhonest-service! ^6 g- }: ^* M8 C  g- T: f( ]. e" @
oscillation0 ]7 x$ z3 \! j5 p% t( b0 a
rand-dynamic
; Q& [% F  S+ `]
  K4 b5 U& T. o
+ M- |  T4 T. p" r( o# D7 Xturtles-own[
  x" n( u+ z+ P( vtrade-record-all" O+ I- e' X$ Z- s! `" S- e6 m
;;a list of lists,
trade-record-one组成
+ z/ g0 p0 s' O: [trade-record-one5 c/ T% r( o; @0 O" 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* ^$ L7 x6 r7 d

6 c) E* e5 W" w# T  ^  Y; W3 W;;[
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]]' y8 T- |7 A  g* g
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]
' C) x% a2 S( J9 E. Q1 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
" I2 f) F0 i0 D; O# zneighbor-total
) `9 U( d& q# W* o4 Z1 C;;
记录该turtle的邻居节点的数目; z9 _' A6 H* a9 u# [! u4 R+ s4 z
trade-time
' [5 w; n; i/ f;;
当前发生交易的turtle的交易时间- J1 d* V: Q+ ~6 d8 D
appraise-give
8 K) M$ x/ D; ?! r2 G;;
当前发生交易时给出的评价
8 y$ H4 A1 c0 S8 v1 Iappraise-receive
- O3 i2 }) d) Y8 ~# r" e0 h% S;;
当前发生交易时收到的评价3 t5 r. d9 x5 v  e9 D
appraise-time( a4 r6 y8 c0 W. d9 `
;;
当前发生交易时的评价时间* E: \7 d: [; o+ ?' d
local-reputation-now;;此次交易后相对于对方turtle的局部声誉, D: A9 ?2 T( ]  r
trade-times-total
8 W' u0 K' [# Z3 i  {$ Y;;
与当前turtle的交易总次数5 t8 W1 b) Z$ {& r7 y- R  \( q
trade-money-total
' a/ R9 J% W% g+ q7 g: i# ^;;
与当前turtle的交易总金额: z1 e& o  r, o
local-reputation# u7 e% I1 K, a0 L9 C, j; B) N. f
global-reputation4 R% \  E8 B4 h* W$ ?
credibility% s# W7 C* ^* D( W8 Q: H
;;
评价可信度,每次交易后都需要更新5 p: x/ }2 ~) x8 t4 e8 t! G
credibility-all1 ]5 D# _! t, j) a: F* g
;;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
- u# t1 i$ T* p  w. y. c/ ^; T+ n3 |4 a/ K. a1 `$ K
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
& T% A/ n* J+ scredibility-one! d$ K( U) Y' ^  V& E  E& 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' P5 @  ^4 A' s9 J
global-proportion0 S" l0 w0 F& }$ U% f! [
customer8 V6 ~, @, V6 L" V: q
customer-no
0 N0 C$ [) J0 }/ C( S: W' wtrust-ok
* c/ b: Q  e7 K, Z2 ^7 E- U$ _trade-record-one-len;;trade-record-one的长度
" @, U! P* G$ G/ e; H]
1 o6 j5 E0 t" z+ W0 [  s! X" }/ o( F: V- M# y
;;setup procedure
( ~8 S% \- }  v- Y( [/ O9 W! O
- X, y7 A/ J- W6 M" U# vto setup
6 H# v# e6 M& Z8 J
& @/ @1 n4 B  s6 ^9 Sca

& i  e% \+ x9 [) a
8 `5 g: Z/ r" Binitialize-settings

) C& _+ q# L# y  d. Q- }' b" H! f* A8 U- C; e. t( w
crt people [setup-turtles]

7 t8 P) t/ B# ]  q
6 R. R8 r: Q( n; V6 {0 ~/ F6 Mreset-timer
  {1 w7 r, U6 J- K' d
5 O% B$ q9 _5 M1 I) m/ r* v
poll-class
( W3 Q9 U! D) i1 A0 F
( |$ d! [* I$ e4 Z
setup-plots

5 W2 R' ]' ]7 a- x$ z
3 o  X6 P: M- Ado-plots
6 m2 D5 `: D% K6 z9 n7 R. m
end' z9 n2 q7 u- Y+ E5 O
1 a2 d8 W$ ]* J: P! h  g  G
to initialize-settings5 R7 Z( p2 f3 @  Y. `$ c

+ ^6 }8 j( s3 V" j: g) Dset global-reputation-list []
# a1 y6 L0 N# |

" h  B- v, P6 n/ \4 c; a/ t. h, fset credibility-list n-values people [0.5]
& q* ~- T/ x9 e# _- n% R& h1 i
' `' ]4 \3 b4 M8 v0 p/ l0 n: \  t, J
set honest-service 0

- A5 D, x' `% R6 G; ], n7 Y2 o4 `7 Z9 B
set unhonest-service 0

( e1 c( q) D! \1 a/ g6 d* H7 E: b3 E
set oscillation 0
1 N5 A. S+ F6 ^* e4 O

! \! s1 x1 x+ {/ j+ }3 v) m! E' Cset rand-dynamic 0
" Q6 E9 R; o1 C6 o( f
end  a4 p5 k8 D/ S4 B

+ I; ~* T) r! Q* b6 E: C+ y/ ?, lto setup-turtles
! K' F0 W8 S! v! q9 _/ ?1 D! Dset shape "person"
, R' j; m5 ?! Y- o+ K! y: N0 {1 tsetxy random-xcor random-ycor
( [3 m1 g: E' }. z' g6 jset trade-record-one []; C) Z8 I& R2 k- K7 {* I, L' V
! r; a4 P0 v" q+ `1 G% F
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 w* P1 ~. p- L% i! {$ w

5 w0 ]4 h0 |( c6 e7 yset trade-record-current []
: B1 K* Q  a& ?/ k3 }set credibility-receive []
, \* z) [  E7 n1 D8 z& |set local-reputation 0.5
/ j" Q1 p9 \7 O* x% G/ |; |$ h8 zset neighbor-total 0
- F5 r6 `' Z' `% N  Q) gset trade-times-total 0
- p) J8 D2 d& \" d  H( @set trade-money-total 0( N* S6 s% P+ v5 {" i# u4 l; h
set customer nobody% H  l2 A/ Y0 [' m& c) n
set credibility-all n-values people [creat-credibility]' H. s' i8 _" D( `4 h
set credibility n-values people [-1]
" o" ^- {1 \/ [( T2 mget-color
9 z! L  G8 T1 Y( g: C% T; _! }- o, T
$ q' h9 _+ ~  m/ x" `( O* x
end9 A1 w2 O' r. j
: H! E  P. C5 f3 Z) T# T. q) @
to-report creat-credibility, D4 b/ Y- B( Z# P5 M$ A
report n-values people [0.5]
; Q2 E' y* _# o( C: L& F& a/ u/ }end
( M; y" [! T2 k% A4 ~4 U* [9 N: r* j9 z+ _; K
to setup-plots; U1 H( L5 O$ d8 v1 F: h

' H. d7 \* ~4 Iset xmax 30

% l4 K) `, S' p: f0 \7 T
1 i" O4 j" t0 u$ L! Z+ l6 f  |; g; kset ymax 1.0

! r2 S+ ~+ d$ n$ D/ Y) d5 g
5 d% `- O0 P) z6 m: s) A; xclear-all-plots
) {+ n" b' O) c3 s# }
  Z8 Q1 M# _9 v! ?3 @
setup-plot1

8 p; o+ e- p& q6 I( n$ v
7 Y+ z' p' Y$ [4 h* n' B6 q6 Qsetup-plot2

- Z1 A" A6 k7 g- X7 I
6 Y+ {/ ?  P! Q6 v, x4 Isetup-plot3

0 m, \& ^4 v2 r7 zend
1 p* O: K% P7 `$ U8 }: M. B, o" ^
7 w) K: \6 q8 G9 {$ i  a) x. v; Q% };;run time procedures7 i  H7 T# K* |; Z
; Z- G5 o( m9 [4 R' P0 T* w/ P
to go
6 A/ o$ t$ g: Y' b
# N2 R1 S! V" F8 f  Bask turtles [do-business]
5 N# }+ M8 T3 Q1 s0 D7 M
end$ ]# ^- ?3 `+ m" @4 O
  Y% f4 P, R3 \# a" X  S
to do-business
& f& Y( W+ _. _- z* ]9 A

& w, f4 G- \* ^" a; ]
& `# l# m& H/ Y3 ^7 C% }rt random 360

0 f+ K2 }& [  b/ `) ^. G6 C  K& ]' f' |
fd 1
' ]0 `7 W8 e+ u( j# l$ Y! q7 V

* J3 \0 \/ T) Q) oifelse(other turtles-here != nobody)[
. d+ o' M8 c% H0 J/ q
; s& U" o8 {4 y, g# H  C
set customer one-of other turtles-here

( r* z' w7 g! K
/ X. y7 U0 ]& V1 M;; set [customer] of customer myself
7 \: `; Q3 }- S; w* k$ `3 G
6 m+ P4 D* i( R2 A- K
set [trade-record-one] of self item (([who] of customer) - 1)' `. J" D3 M0 d& o
[trade-record-all]of self
8 I: K! D: t( v1 G1 h: P;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% C( d  T) {. c' i7 w+ }

4 a/ w8 ]  v, _& l% ?set [trade-record-one] of customer item (([who] of self) - 1)* J0 M" x( O6 p% a2 e1 C
[trade-record-all]of customer

9 g" b/ q+ B9 X1 Z
/ w8 n8 ^7 T1 R2 Y! _set [trade-record-one-len] of self length [trade-record-one] of self

! h; l9 }+ O8 O4 E9 @) H1 N1 v9 l6 L) A. w" E, [
set trade-record-current( list (timer) (random money-upper-limit))
6 A8 P8 K7 n$ ~0 s8 x2 D
- o* ^# Y! Q5 m( f0 U
ask self [do-trust]; X- ]! \# J* u) V
;;
先求ij的信任度
% ^) n5 |+ G) a' t6 ]1 l4 |$ j7 W( o0 f1 F) j- L( e
if ([trust-ok] of self)
/ b% D4 p. f4 h! p* ?5 `;;
根据ij的信任度来决定是否与j进行交易[' t9 R9 j, F2 Z. v9 f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& ^% p- b, B. L8 l  [
# r$ _+ q' r3 G. e. f: M% n: q[
' t" t  @6 Z2 Q
. ~# t9 D3 x* K' ]' q7 Z
do-trade
. x; e$ U% @- k! \4 c

5 u  B* [; g0 bupdate-credibility-ijl
. g! [2 P4 Q2 o( b4 h+ [4 g  y

% o9 A. o4 r  V; }9 ~& `# i, H* iupdate-credibility-list
9 K- {* h) A9 q, H5 l

4 U7 S) h- k& l7 P9 q5 A2 P* {
% l' k% D: @+ ]* wupdate-global-reputation-list
2 }; n9 W2 L% K" b( \
& {7 t' C2 _4 ~: m' j" t+ I$ a8 V
poll-class
- e4 `, G3 x+ i% j4 j
  X1 u/ d  F; ^5 b
get-color
8 [/ X: [# K' t5 P. X" S' f" W& e

. u4 m2 j9 d3 s7 `" t' Y) x) L]]5 T/ K, G* i3 `, [' J9 u

2 L. D- T9 y/ R4 l6 Y+ }! W& ~;;
如果所得的信任度满足条件,则进行交易
% W3 o: N# K, }
2 O3 ?) ]2 Z7 ?; M5 [. ][

0 m7 z, E  J0 Y: y
4 Z( j, v8 z" ^" L/ _+ d. d8 |2 krt random 360

5 x! h1 v& \. Y( K/ V% \1 e- a1 Q- ^* E, L% ^: B$ W; }) P
fd 1
- V2 \# S* V4 K( I2 D% X; f% y- R

; [9 Z  H& N" y8 A5 w2 V- e$ a7 U]

" i) A; J4 K9 N& t* T  C& R6 X9 ]: I5 p7 [
end
6 N( L9 w+ K1 W( s0 E( k

6 L0 J" m+ s$ wto do-trust # Z$ s4 f. J& H8 H" C0 D
set trust-ok False" @3 c7 D8 q" o& r2 u8 @) m$ X
$ S  j7 u: C# L  l# J8 Y
) A1 d" [2 `) N1 w+ B' ]
let max-trade-times 0
( t$ ]# q0 V/ C( [4 g6 P/ m4 Lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& r, g; W- a2 v
let max-trade-money 0
8 q& e) ?' k+ k3 ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% v# @0 s- _* O: K1 K6 B" slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 K% f6 p6 G6 D, U1 W' C; [2 @2 c5 S" Q$ @* j. I

: V# c( c8 O5 l. ]0 ?- N- O- K, lget-global-proportion% E% |' ^/ C8 [# x7 i
let trust-value: z: d5 k3 D) z' ]0 w4 w4 ]/ G
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)
/ ]0 O' [0 d+ N% s
if(trust-value > trade-trust-value)' U- o1 g/ L2 `# p
[set trust-ok true]# N* D/ ]- Z( N+ |
end
4 \* |8 I% `3 L) w. t1 Z/ X( K2 S& A# n5 U" `
to get-global-proportion. T2 U  |4 m6 u5 I6 i
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. X* c/ F" O: ^5 A[set global-proportion 0]! ]$ v8 r* a& ]/ Y+ Q1 M/ T
[let i 00 {' h+ s9 B3 B7 G9 A8 r" T
let sum-money 0
" {% J  U) c# v% K4 n, \while[ i < people]: Q* K8 V. Q. ?; _) x- D0 E" {
[
6 _: W; Q4 f' f! Gif( length (item i: V. |7 j( l9 [+ i6 x
[trade-record-all] of customer) > 3 )

' r' \  l5 ^6 o) C[7 K2 l0 ^+ i% t; T% F
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" l8 o% O; B6 s1 g3 B]
9 W& D: p; `9 r1 B2 _6 d! `2 i]* L/ ^* M2 m( `& n# f& e
let j 0( h2 ~  ?' J  F' {
let note 0
0 @& v, i' ^3 P/ [while[ j < people]
$ v9 Z% m# a2 {[
* x& r8 W6 b3 o0 g# f# oif( length (item i
7 P9 }1 u& C$ D, @+ }3 L5 x[trade-record-all] of customer) > 3 )

# P7 U& ]. E1 J[! E+ A6 F. Z* B- k
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' O. m6 ?. @  b. g9 A) e7 G
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 v% h, t2 n2 P- H7 X
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ C. E" t* E! p6 o2 |9 u
]9 f4 Y9 V7 c" V  M
]
- A2 r" q3 W8 |set global-proportion note* w/ K6 o* U( S! s8 e
]: b( q- W% z) x0 h9 q+ {: W
end( Q4 E% c3 i9 c

* K( u) m' R6 h7 Z7 uto do-trade! b/ q+ x2 g( ~
;;
这个过程实际上是给双方作出评价的过程' \! _$ ?8 C  }6 `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 N) I& M) u. h8 U8 x) X5 ~2 Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  [! B! B- N  b( S: i1 p3 Jset trade-record-current lput(timer) trade-record-current$ W+ _3 l0 Y* l! ~% K5 P
;;
评价时间
1 u8 {6 M9 Y7 S/ j$ Qask myself [
  y; g" i3 i  a. d* f  ~+ Tupdate-local-reputation
' m" ~' g, t7 ~* I$ [; W; S$ b/ Wset trade-record-current lput([local-reputation] of myself) trade-record-current
) c/ Z, _9 R+ u* ]5 X' }9 e% r]8 X- d+ U- K( C
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 F# p7 \3 g* D;;
将此次交易的记录加入到trade-record-one! \" e& d. a# z# f
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) g" u) Z* i3 rlet note (item 2 trade-record-current )
' d1 P$ D' `& c  d" Nset trade-record-current
* O* R: Z' g, o* S' @(replace-item 2 trade-record-current (item 3 trade-record-current))
( s& W( _2 i% n7 i4 l. v: f5 v
set trade-record-current
0 i( o; }1 g. C+ O, e% s5 }6 P(replace-item 3 trade-record-current note)
# b! i# s0 x' p& H% ?9 n* x" F: c7 w0 [- M, S6 k

$ n0 w$ g( W* c9 Fask customer [& E) h  `: f. A) b$ }1 V
update-local-reputation
" n) G( L/ h  r9 r# d  O1 N( V! pset trade-record-current
% w- w1 Q; O. T$ |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; r, m5 p! U# ^2 R  Q: N  Q* i
]* k. Y+ V; q& q! s# N. Z2 X; K
3 j, g) ?* C2 E. l) Q4 w

4 b) c* `# B' jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" ~: T& m% w) t2 k5 W
/ Z# r: A! w8 ~  r3 Z0 P
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* J6 k) [% N8 v8 ~. H" J
;;
将此次交易的记录加入到customertrade-record-all
0 c+ K1 N& N. E% A+ \end
' k3 p; `7 m2 u7 a
9 e) X5 y3 F; o; Z  {to update-local-reputation! v; b& r, t( l- a& M: ^
set [trade-record-one-len] of myself length [trade-record-one] of myself  N4 X7 q5 c- W) }# Q! `
7 A6 N0 B7 s' D1 `- o
. N. n! w- J* Z
;;if [trade-record-one-len] of myself > 3
3 A3 k) ?. s/ B2 `, j4 L
update-neighbor-total: A2 l+ ?* T/ O8 P4 ]* \9 }
;;
更新邻居节点的数目,在此进行
: G$ w6 s1 K! H, G9 t4 h, Q/ K% Llet i 3
! h8 x" D" J) q& ?  ?7 r0 N6 `& Alet sum-time 0
' I" P! r; B  P0 {while[i < [trade-record-one-len] of myself]
6 R" Y1 {/ |7 a+ b2 S& R' f$ p[
) G8 c4 B  [2 Fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 _4 Q& [+ e. Q' ~- E( c' z. kset i! S" ]" m# G9 ?% g
( i + 1)
3 W/ ~3 P. L. N  n/ _* V
]8 S. m) K& j) U6 E+ p* i
let j 3
( w4 M! ^% s- ~( e7 y1 R/ W/ alet sum-money 0* G3 o, V; G4 s1 b" G8 s
while[j < [trade-record-one-len] of myself]
! v8 n3 {. d, r; k* t0 b8 v[
1 B! T+ t: ?' D7 [! lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)0 j# H6 a7 M( v) X- H: y" c* B
set j5 B. g" v! K, U& v3 D
( j + 1)

0 Q0 x/ Z( |: V. {/ n]
' V. l% N" E: Ulet k 3
+ J' Q5 ?* Q3 ?# A+ P3 @: plet power 0* Z5 T; p, Q( r" ~% H
let local 0
0 T& ^- i' \0 P0 Z# W. v5 H2 Vwhile [k <[trade-record-one-len] of myself]
: M$ B: V* B. {[1 {1 A: P' l* e" P
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) % R! ~$ H1 A5 |" k& |" Y- V' J: L$ ]( D
set k (k + 1). s6 \  w0 f' z9 @1 ?* {
]6 ~& N1 o$ Q9 `; \% h1 ]
set [local-reputation] of myself (local)
$ E/ n- s9 M: b1 mend
% e" D7 H4 w' D3 U
  s2 d5 H% ]! \6 b( z! Cto update-neighbor-total! o4 B+ {( [# f7 A! h- g% K
' E5 Y0 U5 b- t8 p9 P: d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 K7 m# f8 A- k0 j& W* Y+ T

! e3 E: Z# w; E/ B- q1 h4 q+ O5 a
: {$ j. m3 _, N. `) }0 y7 i
end* [9 ?! K4 J, \# X" j
# [7 P' G* v8 S
to update-credibility-ijl 2 x( }/ H: @( f! [* ~
. P" F. ]  f% v" w2 j
;;
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 L& T1 R8 e. c
let l 0
5 g' g  ]2 k5 O2 p: uwhile[ l < people ]
3 w3 n+ u8 U2 l, [;;
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6 n* J) |# }) T  N
[
2 {0 Z5 f1 H! t' tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! J- ^% w2 ]$ ~) L+ _if (trade-record-one-j-l-len > 3), V8 J  t5 `3 Z% f
[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
1 L- K, a3 |! olet i 3
" R. Y9 ?# u" N- Y/ H' Olet sum-time 02 k: Z$ [/ t( r& `; @( d, i
while[i < trade-record-one-len]5 y2 G* ]! ?) }( X9 ?6 s
[
! Y5 ]' d5 j3 W8 O" P$ ?set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# @8 y: h9 R. m1 h5 `$ @set i" F0 G1 K; A; u0 D  I
( i + 1)
2 C: ^7 V, Z  h( a, @
]6 m0 e  \9 a7 R+ Q+ b5 u0 a% F3 r
let credibility-i-j-l 0* g; s7 ~  d. _; ?' x* K
;;i
评价(jjl的评价)2 s2 d7 \( F$ F  Z) W* [# g
let j 3
9 R( e- ]1 W0 C0 Slet k 4
: a( ?7 Q. U, q0 Z' d7 X7 Dwhile[j < trade-record-one-len]3 p) j* K  K6 b2 C0 C) M
[
, ]! `5 l2 R' K$ l8 b7 l6 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' d& K1 A0 E; P; M# p$ b
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)
8 j+ o5 q' ]1 I# k4 u$ S7 [  Iset j! g# l- \+ T4 S' ]2 ]; {% c
( j + 1)
$ J' b/ I8 f2 r
]
' r- x, P1 p) h4 @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 ))) W  R3 }3 {* b$ h2 F$ ?1 a4 \7 ~

# n4 Q+ j3 w) v7 [9 J4 K! T
2 V  R3 z: x, E4 n4 q2 }( e
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 Z0 _2 r! n2 ]# z& M# J;;
及时更新il的评价质量的评价" d% K9 P, V) m& @- K
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ s+ F" N' m* e4 G5 _% u. V$ g9 V0 x2 _
set l (l + 1)3 Z$ I0 G6 V5 u7 K& {* j
]
2 H) `- R5 O* J+ S9 t$ l: zend
8 I# I5 b2 p: M: K$ z+ p" O
# V7 U/ ^) O  Cto update-credibility-list
- f1 d7 R! I- r7 q3 `! v) f& G, blet i 0
; `8 L- W0 x9 a# q. f* Hwhile[i < people]2 Q7 D9 c0 T6 l+ Y
[
( k9 x- H) _3 n; a" Xlet j 0/ L4 K  R, ?6 d' H
let note 0& t9 T4 G0 F& {/ U3 S
let k 00 d% Z. g% [5 C
;;
计作出过评价的邻居节点的数目
) v, U5 x" {, mwhile[j < people]
, O5 w: h- {" ^7 q( u% a. j[0 w" P" w% L$ g# h  b3 i
if (item j( [credibility] of turtle (i + 1)) != -1)
/ y8 b5 _1 I5 I: D9 g;;
判断是否给本turtle的评价质量做出过评价的节点: v& ~8 q: v& {- Q9 J
[set note (note + item j ([credibility]of turtle (i + 1)))6 H& r7 M8 ^! m+ s2 H
;;*(exp (-(people - 2)))/(people - 2))]

. S- D7 `+ u2 `5 _; z( l# }, ^& kset k (k + 1)
0 R! n* d0 E) i. g4 v/ A. c]  s& N+ `; B- Z
set j (j + 1)
. ]: F  j9 u! Q]! K9 U$ s. p! u3 _! I# }
set note (note *(exp (- (1 / k)))/ k)
& Y  v$ N5 W' j) O& U8 Uset credibility-list (replace-item i credibility-list note)7 _" p" a. ~& g4 F
set i (i + 1)
# s2 [& {; T& u6 ?( n& B8 S]
8 A* w& P0 v) \' Yend
$ u$ M( R0 S, \2 Q# U$ w5 C. E
2 m0 s0 N3 u( I% Gto update-global-reputation-list
* s' ~- B$ z1 e5 I% \% Z0 Alet j 07 f- u  S. ^6 O: c. }9 k4 u
while[j < people]
) r' k4 T" }0 M[
$ p0 U. B* H% ~let new 07 g! n. H  w' h
;;
暂存新的一个全局声誉( E1 w  @2 Q9 ]/ @
let i 0
% U3 J: |' B8 H0 `* Q& v: M* Llet sum-money 0
, V* I% w) p- }0 ^let credibility-money 0
/ p, X8 l- ?0 M) gwhile [i < people]
4 ]0 |& u" S+ }' z2 E( }% a$ X/ j[6 G0 v0 B* o# [5 m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# j1 T" e" c7 M# A8 B4 Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 _  b5 t, `2 `2 F5 @set i (i + 1)2 m( j- f2 Q- e& _
]8 w/ m; t, l9 r' C8 U
let k 00 H1 V8 f6 c" c& e& w9 I/ u$ N
let new1 09 ?  k" G, z2 w
while [k < people]0 g. ^; q8 m( f. U* f; n
[5 v# O4 r$ V7 B- u% Q$ E
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
5 C8 l3 \6 a2 I' Y/ Tset k (k + 1)
/ M$ a* D/ E3 M3 j* g]
4 \4 V) z- {9 _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; m' u2 D/ z3 o2 x6 J$ h  Uset global-reputation-list (replace-item j global-reputation-list new)1 c  q7 Z* T' m7 F
set j (j + 1)
) }- v1 n3 L. m9 M( I/ A. S( X]/ m! f, h9 w3 h/ `% t% e) I
end. d/ K- U8 M% ?7 R$ ?8 `

, m( M% @9 |1 f" Y0 q
5 W& Q, ]9 _' X: A  v1 u# @/ p
; t- ~- A2 ?# s4 ?* |to get-color
8 ^# t2 ^3 p7 f0 L/ @' {* ~( ?$ X* X& n. [6 n2 Z
set color blue
7 l5 n9 B% k4 E# M/ t& F6 I, ^
end6 L* K# k) ?; l& h$ J6 t

8 c0 W+ m. n% K; [6 e" _to poll-class! v8 \" t; Z* m* u
end( [0 P/ y) C( Q3 _" I

3 s- B/ z5 M6 m9 ?; y5 Wto setup-plot1
6 G( b+ w' S- }+ N8 X
: o1 e- U/ b0 M3 [: n& [% |set-current-plot "Trends-of-Local-reputation"

* ]8 }8 `: c8 k  R' g
* e. J" U/ ~" v) aset-plot-x-range 0 xmax

$ X! K' c1 }) b9 |: |# D" b, X9 }8 f2 c7 D( e  {8 X
set-plot-y-range 0.0 ymax
& ?5 ^( @1 T- `3 g2 r
end
7 i* q# p9 a# R4 G8 t
; V+ B& t; P9 b: l  h" Fto setup-plot2/ i% ]; E2 S& g, \( R
' Y1 p3 k1 Y! _. V9 U( \
set-current-plot "Trends-of-global-reputation"

! h7 a# q6 b7 U# P$ z! p; l* p# d* T5 }: F
set-plot-x-range 0 xmax

0 h7 B( k" d- P' B$ r* R& |6 O. a+ Y/ ~- A) y
set-plot-y-range 0.0 ymax
, `. z' {( ?4 w$ Z/ @
end
, P- h# o9 o8 E% {+ h& C
3 K: t, ^! s0 |4 t5 Z8 k  c& \2 a7 Bto setup-plot3
0 J; a0 C/ |2 m0 ^# B! y' ?5 T8 J6 j9 |
2 D: ~# w4 k, q: Z" V3 `set-current-plot "Trends-of-credibility"
4 _- v) I/ e. a- U4 q/ ^+ l
1 D/ f- @) h9 B4 j6 e/ }
set-plot-x-range 0 xmax
) F, Y4 [, s7 z, j, ~* P. ~3 T

. u8 h& f: F( a- n' T) W" mset-plot-y-range 0.0 ymax
' R* [+ `( J; ]; R# k
end
5 H- j3 o  x0 I! s( l! j
1 w. t* ^5 f$ h3 I7 A# Z* yto do-plots; a( {, i3 x# K$ o
set-current-plot "Trends-of-Local-reputation"
- D1 A% C1 c4 z1 B$ P, mset-current-plot-pen "Honest service"& b6 G# c. _7 @, `7 Y1 L  \, v
end* F  s. n; m) m6 M; ~, s/ V/ r) P
, Y* U. O* u' P8 e! i- I
[ 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.! f9 t* \* P3 C4 u2 e* S/ a

& ], W0 t: P1 J9 C' r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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