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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:- c* o0 P, g5 g6 N# z9 p8 U( S
to do-business   v7 S1 A5 X( E- h, a4 @) g  m7 d
rt random 360
( }. v6 T2 B+ a4 e7 L: s fd 1+ }0 F( k; f- `  c/ q2 k
ifelse(other turtles-here != nobody)[4 Q. L$ q% V5 E8 O
   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., `, C1 f* x9 H8 K, ]% D
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 E* w6 Z1 \% ~- E$ c9 d   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ a, Y% b* F2 O+ W. J+ {5 {
   set [trade-record-one-len] of self length [trade-record-one] of self# g) U  }' h0 |, [. {3 Y. s
   set trade-record-current( list (timer) (random money-upper-limit))6 W8 C2 v0 m% E1 \1 G! j/ |, H  R
% a/ x- s0 |7 G: g  u+ b9 m/ V  x# ?
问题的提示如下:
; H9 t6 c, _! T# z! l9 s& j9 e' u% ^, Z3 D* S
error while turtle 50 running OF in procedure DO-BUSINESS
3 B0 m9 C5 B, |( r9 C0 v  called by procedure GO
3 E4 ^# ]2 T2 X0 L8 S$ ?& q; b: w+ ?OF expected input to be a turtle agentset or turtle but got NOBODY instead.
' H8 {1 U; w/ o) M; Q6 \9 @5 }
(halted running of go)
+ ^5 \; j6 J+ [+ ?2 F
1 w% s. e" p! j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 h6 P3 D, q& o6 v! _; _/ l) ^8 J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% N* c5 V. g8 O0 J
globals[: A8 f' N. m- y0 I" y2 D# U8 P" [
xmax
4 j8 M6 `; l& E  [) Mymax+ K$ P- t$ f" q: H  d
global-reputation-list( f$ Z( G4 l9 G

% [* A5 [% x% a8 l: \* K;;
每一个turtle的全局声誉都存在此LIST" d5 X/ _6 o  {' L5 B
credibility-list
7 |  R8 j0 M. N$ I! P1 q+ K;;
每一个turtle的评价可信度
' g7 M) Z" s% C  O8 [honest-service! Q3 |: z3 h& u- {- ]
unhonest-service
4 {6 g& @, O* U; }. h# Eoscillation
* ~4 s- X8 u8 r: E0 zrand-dynamic
. N+ D% c# l$ n]' Y% q5 s6 \: n" Z! R- m% M/ x/ d

2 q; n* d8 H. \" _) m- B  _turtles-own[1 N" x: K$ ]' O& t: n' J& ]4 Y
trade-record-all. H% W: T$ v1 G* b: V& N
;;a list of lists,
trade-record-one组成
+ x# p2 B/ u/ Q: J( m8 ?) [5 E* ^trade-record-one
' n9 c: C" k" V( a8 d* {' D6 u  y;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录4 A4 U  U; E: u3 r* l5 {7 B; F: p
% ^, ^  U0 }3 q) J4 r
;;[
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]], G" O) i9 ~8 H; a9 M! M/ p# L" J
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]) q9 c# `, ^# d' p
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+ ?; X' k2 E2 S- s: n/ s
neighbor-total
1 y. G( m) [0 n3 W) g;;
记录该turtle的邻居节点的数目
: ^5 F; O( P0 P- F4 G* s7 u) }trade-time) X7 ]7 g8 a0 J6 J1 t& t  H6 H2 I
;;
当前发生交易的turtle的交易时间# z. E( g! h, {: ~) N/ F) ~
appraise-give6 V: |4 d& T2 g8 g6 z% j) T
;;
当前发生交易时给出的评价
8 T8 u7 v# }: f# B/ _! Qappraise-receive
# Z5 R7 U0 ^, U5 @5 {; _;;
当前发生交易时收到的评价
7 I$ |1 A1 L0 k' Oappraise-time
3 }# ~3 \3 R& J$ X;;
当前发生交易时的评价时间
4 z5 T6 r$ w5 R$ w* i8 nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 ]% I% ~# E  D2 S5 k# E7 R" ?0 Rtrade-times-total
% b9 a1 Z6 h) M8 F# G; o0 g;;
与当前turtle的交易总次数$ h6 G4 ~5 N0 P2 I- W" o$ i4 h
trade-money-total
" X0 n4 p, C" K* o( ], N/ h) P;;
与当前turtle的交易总金额
( v: t# u4 W: l$ q+ a9 p, F9 alocal-reputation% I1 Z  W; A5 S; Z, P
global-reputation
) J# l/ d! a& v5 f9 v( qcredibility) x, ]' s( S( l. R6 _% _
;;
评价可信度,每次交易后都需要更新  t. K- S9 }, T0 B2 @% {2 j& M1 d
credibility-all
* I7 Y9 J+ _1 X* b. k) Q;;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
- X. l6 R& u% f5 `5 c
9 ^1 I# x" n- u8 F: S! {;;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
3 G9 `) z; o; U9 O2 qcredibility-one
6 z+ q( k& l' X* ^3 @  o) I;;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
6 s% j. D: R" l, E- Wglobal-proportion" i: n# g0 S; [$ c. y- d9 C
customer" d& Y# L1 V/ d: d+ W3 k9 |
customer-no
4 p7 u4 {* v/ J" ], n" C5 Btrust-ok5 v: `& U. K1 m( H! o
trade-record-one-len;;trade-record-one的长度
9 N7 H, `! Q$ J/ [( K+ ?]
& {# w  y; K' J' [% r2 F5 ]. y; q6 A
;;setup procedure
: {" E' p( M. Q% O" ^" Z- X7 _$ [8 X! `, _) ]& `
to setup
2 n  t3 O1 D+ D' `, J
5 [2 A. c& s% }" O' Tca

! J& h9 z! e/ ^# A+ [& s5 v+ _, t3 A$ U* o
initialize-settings

) f3 k& o- D' D% A4 [4 w2 j, e$ ^; d6 t( _% t* h9 Y5 k' f0 f$ m
crt people [setup-turtles]

, y. A. ]0 g# G' _# L* j! d7 ~8 H- Z8 ^  P, M  H8 q( A1 u
reset-timer
7 j- s: B+ q& T; Y4 }7 k

$ X* U( {9 h2 o& v- _poll-class
# q, d- ~- U: r! ~1 |
' z1 _% `/ |! s2 |; t  W
setup-plots

8 q: m9 U5 K+ ~+ a1 @  Q5 o$ _( {+ g6 @1 S/ i: V. K, E+ m9 F4 p
do-plots
8 w- \: T0 v- `) f
end% a/ ^5 a) [8 ?
9 a  S6 V& |5 r6 K# H
to initialize-settings
- [4 h8 j/ J- h" n* N* }, q; ~( @1 j: F. ]
set global-reputation-list []
# v% R8 t0 i5 ~$ A$ @* n* B

7 ^2 w; W+ P% r7 g2 `set credibility-list n-values people [0.5]

5 [$ E7 _5 B: O# M4 u$ s; [+ q' F, L; t+ _  T  n. H2 R- O1 a
set honest-service 0

3 @# |& s* J1 b+ T% r* K
5 R' J# s0 `: o% Z* H2 r- Vset unhonest-service 0

5 |# ^" H  r7 \* i( |$ F5 _
" i# Z8 f+ d) Z. n! H, `set oscillation 0
9 o/ F* W. L3 l" h
; |* B1 _8 ^- g2 M: N
set rand-dynamic 0

" b, W) |+ C6 b- T  Q4 m/ yend# K  ~0 d' k$ s
& V- J4 v1 l% N+ }1 _
to setup-turtles % j: y' @$ f6 R
set shape "person"
1 G4 E5 N  B/ V2 Y) Y: Asetxy random-xcor random-ycor
3 a, m* g1 i* K% t) L2 o1 z$ Oset trade-record-one []" n+ v) F, e$ |% ?

  n+ X1 F/ P  y3 n1 \* E' U) W- yset trade-record-all n-values people [(list (? + 1) 0 0)] / L8 j; \, s  |
" L- y$ \$ }& i. S; U
set trade-record-current []8 O' a9 T9 p" w% t
set credibility-receive []( ^* ^' Q3 ^0 F# b6 J& G' Y- E
set local-reputation 0.55 n+ D4 s0 m0 V; o
set neighbor-total 0
, ?; i: n: }8 {' A, }. mset trade-times-total 0
. W( u# [5 g7 `  e  aset trade-money-total 0
/ n0 d% {- K% N: ~. t0 N& W% Lset customer nobody
- `0 H9 a+ a  P+ D6 z- Jset credibility-all n-values people [creat-credibility]
* ^8 B' a1 M8 lset credibility n-values people [-1]
" f  ^9 Z$ ?% m% lget-color
/ a5 Y$ z7 f+ Z8 i+ A

' U2 N1 p4 P7 Yend
2 x/ C/ ]4 {; u7 |" A5 D& m9 Z: l  K# a/ Q' w
to-report creat-credibility
4 p: o3 F; r+ Kreport n-values people [0.5]
! E- l/ W7 S7 Send. @2 ~3 w6 _3 X$ V& `- D: o
1 X! I; e! S" C" T1 L7 P+ t$ K# \$ k
to setup-plots  p9 v4 P- G3 ]9 Q* v; z4 G
" D  E4 ?, o9 ^+ Y# ~
set xmax 30
  b5 z) y9 C, J4 P" h% c; t" r

2 q3 `7 y7 S; Y0 V4 Jset ymax 1.0

) g* w9 O3 A$ g! p: T8 p. T/ _4 b1 I( p% V4 Y3 w5 k5 c& q
clear-all-plots
+ b1 s7 h. k/ i; b$ l- K

# s1 g* A3 u( E# j% y1 y3 Bsetup-plot1

% R" E' {6 @: e3 i! w& B- j% \$ D# }7 L
setup-plot2

4 ]. \/ x( o$ G
; Z4 Q3 @3 Q$ ^2 B& l+ o0 wsetup-plot3
3 K8 N# c0 X* u2 T; g( }
end0 D; }+ e9 Y8 v+ v

. J# u7 r9 z3 t5 J, h;;run time procedures2 W1 j$ y5 R) u; L2 T
7 c8 T  v2 j& Q. ~0 i+ w9 U8 C6 D2 c% j9 |
to go
8 p3 j5 w4 T7 i. T" m- V. n) Z+ a& l; R
ask turtles [do-business]
" W9 R% l7 }% K1 G1 y
end: I1 n& ]% f+ ~) l1 U; g& ?. B1 |: }

$ U7 L1 i3 k8 S7 dto do-business
# R' i  ^. ?. i  C

9 ~9 J, J9 N/ ?' ?2 x8 [
! a+ D$ k  I% Ert random 360

0 L9 o5 l- H; s- ?7 ]( _- E5 Q+ m1 S5 ?- s4 l7 ~
fd 1
* l/ X8 H7 `( o/ |3 e0 v; c+ U

4 f8 N$ K: w8 E, j2 Jifelse(other turtles-here != nobody)[

: {, B' n. z7 V! v" f" t; P6 ]8 n' t4 [) Y, a! ~( A
set customer one-of other turtles-here

* O- v9 O, K! C, b
9 y6 y5 D5 u, T8 m' a: u- ^7 W* L: e, j;; set [customer] of customer myself
. ]3 a; Z' a+ n2 V: ]7 S
+ G6 O  K) V6 j; i5 p
set [trade-record-one] of self item (([who] of customer) - 1)' T) L( ]) X9 b* F
[trade-record-all]of self
" _7 x" X9 t  F; a;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 I6 j) F2 J1 H5 l6 q9 G8 p# R

  a* u5 E1 U2 {4 E9 t8 L4 Rset [trade-record-one] of customer item (([who] of self) - 1)
& B9 J( c7 X  J* q" s; E7 V2 U[trade-record-all]of customer

. F6 e6 ^' l1 S' O# o- |5 ]0 r$ f9 Z3 T1 U# u" I
set [trade-record-one-len] of self length [trade-record-one] of self
8 S8 f, {# [# A/ u  _% v

1 C" V) p. R5 K) D7 A! Jset trade-record-current( list (timer) (random money-upper-limit))

8 g- X; W, E7 e0 Y2 h4 p3 l) n
4 P( k$ \: K+ x4 ?; o) q5 n# Dask self [do-trust]
6 `+ ], u' r0 Z6 P;;
先求ij的信任度* |- d: X, g4 I, G/ v0 _

) G1 `# i5 I. @+ r% b! zif ([trust-ok] of self)( j( I" }5 J+ a. \! p% w! V8 p; S
;;
根据ij的信任度来决定是否与j进行交易[
. b6 \7 d' ]! I0 }. w% wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; A3 O0 r& b" _+ J4 Q

4 t8 D  q/ [4 g$ K. x$ U[

! }  X$ ?4 O/ N6 ~
$ O7 D1 S+ @" m% E& }5 v2 _do-trade
5 M9 \6 c. a6 ]" l4 P0 d

; C3 [- X  E$ `; ]update-credibility-ijl
; a+ ^. W; P, y9 Y& A
; u- n, V$ {4 J# \
update-credibility-list5 ^& s2 E3 P& O3 |- U  c4 O2 D9 I8 y7 r
3 q+ w1 o' Y( h& Y; Q! a- N; R4 W

3 r; H! {1 `/ g- l0 N9 @update-global-reputation-list

  H" s* m9 p8 g6 q% M+ p1 j/ J" `+ a7 u6 @& q
poll-class
- _% N% X3 h/ `5 ~( r+ r6 N

% Y/ ?+ S6 `  V7 x, Eget-color

- \! @2 z' j6 _4 k; r& q5 R& i( m" D4 d9 q
]]
. Y8 V0 N. ~! z: l+ [  J" I
: L& D" F2 ]5 Y$ m* y;;
如果所得的信任度满足条件,则进行交易6 p  U- D0 X, G6 l% }' @

: z/ l2 V2 _0 J$ x6 J1 u[

& b; y- U* y6 i) y7 z. t, U  S# W
' r" i0 B$ {% k* Y$ v3 N4 srt random 360

" e9 h& V. ?3 ]- P3 S! a! J, _( R+ ?3 \: N, i
fd 1
" ]/ N; B- Q6 c  l; R& q3 c: s

1 Q3 N% y: {7 H) |' o: z* `( j]

) B" v; ^2 z  N4 n6 j# T$ d) }5 v1 Q+ N3 ]: F
end

7 u1 Y/ T! ^- g" _5 S
/ a  i0 Y; ?8 X2 L; \: A4 F- Z& Y+ Yto do-trust ' n' k' w, F" E, n, m
set trust-ok False
; l& C$ n, a  I/ ~
6 C4 x- d* Y0 R6 s! l7 Z& `/ n) K

" A# R8 r$ ~3 g# c7 s2 P$ Qlet max-trade-times 0$ c3 h8 U1 z. M  H( E6 \0 ^9 x
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 I1 e5 B! \( l  j& `9 hlet max-trade-money 05 L% D& \' r" T* I' ^9 k
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# ?/ {5 W- c- a3 Y- F! g( Vlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 |0 V( \! @8 V  S+ V
! e& H! u" U" Z/ y

* @0 Y( G% \7 ~* ~, K& y5 O& h7 dget-global-proportion
! K8 `  ^1 }1 Z: d7 w6 j6 Plet trust-value
( Y, j7 k0 ~# o- H( v. a/ W2 P& Xlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
. j0 K) a5 _8 \" Z
if(trust-value > trade-trust-value)% _8 Z9 a% Z. `$ ?
[set trust-ok true]
7 v, ~" p+ t% t8 ]& p! [/ J7 `end
% e" }  K! Z/ n' G4 i4 w' O6 k6 t9 i. v* ?
to get-global-proportion: |* L: E5 d% z( ]# r
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- Y6 _; b+ j) [1 }4 ^# u# v1 N
[set global-proportion 0]
; i1 }  l' \; H3 ^* {7 L3 C[let i 0
3 }9 F* Z0 U( C1 u. A  Nlet sum-money 04 U1 T/ h' W) m4 J# P
while[ i < people]- E) o; r- X8 b8 X- i5 z! q* K6 x
[* E1 i  ]/ ]- i, Q
if( length (item i
* W  J; p4 `- O- A9 ]' [[trade-record-all] of customer) > 3 )

6 n; p! v- @4 ?9 y+ S# ^[' p" H  Q5 B5 i+ g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 v1 m5 o( P% y& ~]4 L. Y, C. A7 E. B$ X3 Q/ W6 |
]+ X; q+ M5 H7 ^4 u8 k: S1 W; ], x2 y
let j 07 q8 f- e& r8 z2 T: t8 A0 e2 B
let note 0: b  v7 n' T: T' F! B/ {
while[ j < people]
$ Z2 u) k2 |" `# s8 A8 o! ~- t[
: g5 q& f: T: gif( length (item i
# q( r$ t4 P) C* P' s' V[trade-record-all] of customer) > 3 )

: B, ^0 C8 x+ M1 x[& t3 |  b2 X) ~1 x
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 g7 d) q0 ?' ?
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- m; E5 N; |" K# |/ n0 W6 c[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ V; l! _: a) H: L+ c8 x
]9 b5 ^/ j; N. S
]8 t  Z" ^, P$ _9 u( N
set global-proportion note1 L7 {5 h. @& G% ], b
]/ \  m) G9 \2 ]1 ^8 c/ w* I4 I
end
+ L1 Y6 ^, H" ~# @+ ?4 Y( }. G1 _0 s: P; U. w+ H- ]1 b9 r4 w
to do-trade
) l5 Q  q- j. @6 B;;
这个过程实际上是给双方作出评价的过程" g7 D8 K0 |  D/ |# b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 l5 d" t. z: F: d! W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 M! O+ C3 _/ `% C1 Y, P* y) u7 \3 aset trade-record-current lput(timer) trade-record-current
" N% k" z) V/ b0 q$ T;;
评价时间
# H1 N3 u% `, q( z3 kask myself [
0 I# @/ Y2 d2 r. I1 cupdate-local-reputation/ O" _* H  |8 z" q6 |
set trade-record-current lput([local-reputation] of myself) trade-record-current
0 ?- r* h  j, j]- S/ o1 l0 a8 F7 c' z  N
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, ~6 w% D; a" r0 s% @8 D. t;;
将此次交易的记录加入到trade-record-one: p2 O* U, W  H' f
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! Z1 Q, i/ |* D8 f1 ~7 P
let note (item 2 trade-record-current )4 O& v  W" |9 Z2 t7 |( J
set trade-record-current2 k$ ^+ _4 R% a
(replace-item 2 trade-record-current (item 3 trade-record-current))
  l* P5 k) j; Y0 X
set trade-record-current! f% h3 e1 [* h& V
(replace-item 3 trade-record-current note)
  h4 ?) q* X9 x+ W. c( |
. N# t, Q/ ~3 |3 o! G5 I

4 `+ W- _  h8 D, ]ask customer [8 z- s+ p2 g9 X0 H' X
update-local-reputation# Q8 c2 W. S8 y+ a- r; s/ F
set trade-record-current
5 x3 s; C7 C7 O0 r( O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- D# Q3 f1 J) h! Z$ t& d8 ]
]
2 t7 X# Z2 {; @; `7 Y( \/ u& ^# {4 v" O9 v0 W, n; b3 I

7 w' \/ w- U7 k( Z* g8 y" iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" G0 [, x/ v2 s6 z/ _; |

) s- @# `8 w& y  c* Cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( C: i* n* F; |+ M/ c2 w;;
将此次交易的记录加入到customertrade-record-all
! |( b2 |8 w9 p! Z0 \end
& W4 _  m7 l3 L% w2 M
& P. G. s. w5 W, s" \to update-local-reputation* s: M# {7 f* m& F
set [trade-record-one-len] of myself length [trade-record-one] of myself
) K$ N9 J# ~! G4 I5 }' `( |. d. ~6 H8 _+ s

9 D. Z. F3 y: r3 o;;if [trade-record-one-len] of myself > 3
# e: ], G- N) G  f* a3 R
update-neighbor-total
4 C! c  l7 ^, ];;
更新邻居节点的数目,在此进行/ k; ]6 N5 ], r0 i0 z
let i 3# m" i$ i& c& t* P
let sum-time 0
0 O  V! u% @5 v; x5 s! I- c& }while[i < [trade-record-one-len] of myself]
0 O& a& ^5 s8 H, s. z[# j8 Q8 n% T4 T6 g8 m9 l) r
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 Q0 u) R) e1 o
set i
( a- t' c8 W5 B7 h$ `( i + 1)

& Y4 |7 X; [3 U3 P]& B  _. T( L) Q% R5 [' m
let j 3
8 V! O# T* J  ?! ^) n. J. dlet sum-money 0; f' v4 Y" l) p
while[j < [trade-record-one-len] of myself]1 h3 B3 I  _) [+ u
[
9 f; x1 E' f& x  ~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)% R  p& ~. ~# E  t2 s# X  f
set j& ]  I7 ~' P* f$ V- x7 Y; ?8 E
( j + 1)
5 D6 n6 g! q/ D% ]" \
]
5 s+ z& F' g8 c5 s8 Q0 tlet k 36 _' g) \: i0 G# S
let power 0
8 x+ Z+ S0 f5 N  [( d" vlet local 0
5 s6 M8 {8 |9 Q: }: Z! Ywhile [k <[trade-record-one-len] of myself]! j7 o0 P$ a% Q1 b
[5 y/ R/ A4 r5 X$ b, b; t
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)
7 U! C7 f8 J* D' m( cset k (k + 1)
5 I- S- q( n3 c]1 ?3 x/ \7 W, p+ }' k- s- X3 |% V
set [local-reputation] of myself (local)# g+ s( h2 O. M! A4 V1 p
end, Y6 B+ E% @+ g# @
% U: r  p7 |, F2 ]: K9 v
to update-neighbor-total# h" I1 t0 F4 z4 q9 H

' _7 U) \- l$ d, x3 i9 t3 m  V6 v4 Jif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 v, f: k+ s& {& K) F& H  l
( p9 m- R6 @& A/ d! n3 C. g7 {% A
. ~$ Y- E/ G/ i. W2 s
end
1 K1 y  @7 H" b$ }; [
& k8 k2 O2 U0 R3 x1 q  o$ s: x; Ito update-credibility-ijl . t; f" {. U/ |( N( q

4 a" C1 `1 j7 e4 T) \8 t1 i8 u;;
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。; F3 A" D9 I8 t$ W
let l 0* P) Q; `1 e! Z8 r# c: @
while[ l < people ]
* z7 Z6 y) }" _) [7 n;;
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8 ?3 _1 ?# \) R1 q: b* d
[- y) p( t3 g8 F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 C" s: w3 v, ?' ?+ S1 K4 v; F& V
if (trade-record-one-j-l-len > 3)
! |% g4 f/ F& z- b[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 Y3 ]  ~9 m: v; W4 Dlet i 3
) o/ u- F* p/ Ulet sum-time 0: @' ?( l  J1 z: ~5 K3 y1 ]5 \
while[i < trade-record-one-len]
4 t' A% h( z6 @1 y8 j[& }3 c- U/ g! n, m9 `
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; {# J% S5 e! [) ]9 o4 R2 U5 Jset i7 R8 Q3 k$ H! S# ~# Y" c% t* M
( i + 1)

; R: N, w! F, Y9 Q# D]# c+ m) z5 H  q$ ]6 Z/ {, \3 ^+ q/ h
let credibility-i-j-l 0- b9 Y$ e% ]  \3 T+ d3 V
;;i
评价(jjl的评价)( g# R3 {1 D8 m2 j- e1 e# B
let j 30 M: ?) \! w/ y1 O4 B8 ]
let k 4
' k( H4 k' u9 }" Bwhile[j < trade-record-one-len]
) L, J. Z6 z- d& e3 [0 _[9 ^! F' h! P# J4 l! J4 o
while [((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
; f5 ?( B! E3 j! q: Jset 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)
+ c$ M8 T$ Q9 t4 s+ Q+ Q7 f' Fset j& V  y- K+ r! d2 V' o2 t
( j + 1)
8 M) m" n) N' k
]* e, u4 {" i. @) V2 k
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 ))
( E5 X; l, G0 Y/ K+ {* C' I4 }
# k! W# W6 Q; V
* c! T; w& n& D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ g% P% v& `7 R; V2 p- j, N2 v1 [;;
及时更新il的评价质量的评价& `4 k) k' o8 r) k/ I
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( G9 {4 |4 `+ c. ]
set l (l + 1)8 ]+ c" G9 Y+ Z" n: l
]1 f5 _+ f* x: X- c% D# a
end& h1 b1 @( ^8 C) Y" o5 c

+ m- }/ F3 ]3 e4 ?6 o: g* ato update-credibility-list
# _# e/ E1 l) n$ v! p6 dlet i 0
* {4 U7 h& z6 g5 ]* v* Wwhile[i < people]& z$ o, u% `8 ^6 o; }( @$ f
[
7 G2 [7 M6 q- H- Qlet j 0
: i4 j) g$ v/ O5 R% K8 Glet note 0$ K6 Q- v0 l/ p1 a, L+ D: j; j
let k 0' E, b6 ~' W( c. I) q
;;
计作出过评价的邻居节点的数目9 |1 u. F, F" L" L# j
while[j < people]
8 _/ W: @1 K3 J[( d( q1 k7 I6 a- k% x
if (item j( [credibility] of turtle (i + 1)) != -1)
! a% C* \/ n6 s0 \;;
判断是否给本turtle的评价质量做出过评价的节点
' A* V3 z* h" r% N  ^; l- ?[set note (note + item j ([credibility]of turtle (i + 1)))$ P$ r5 L  l3 A# F" R# a6 o* |
;;*(exp (-(people - 2)))/(people - 2))]
4 U& ?$ e$ ]# }: V2 h- q$ H
set k (k + 1)9 m" m( O& b7 S# E: y0 F6 d
]0 E+ E7 n; a; t0 i$ U/ Y- n
set j (j + 1)
% @3 J7 M. |& G]
8 g; a  O1 d& c, W- {7 n1 Dset note (note *(exp (- (1 / k)))/ k)
# i3 w: c* L8 [- `* Tset credibility-list (replace-item i credibility-list note)
6 ?- V6 n$ H2 O6 Z$ ^' i: Dset i (i + 1), k& \# |! F8 B
]
, z! {9 ]& y! s1 j/ uend
; M* z# u& y, R9 b
2 ?8 E9 Q0 q- G: f# ~- h* H+ bto update-global-reputation-list, O  y: B0 y* g& A) N0 E
let j 06 I- `0 v; \4 u1 N. l/ E
while[j < people]
! F8 V: C: b- L9 ^[: N# P6 t4 c# A! k
let new 0, |8 ?; v' i' z2 ~6 {
;;
暂存新的一个全局声誉
2 _$ y9 k+ @2 P* zlet i 0' S& z7 H) s5 @4 _
let sum-money 0/ ~, W8 f( @# E$ k0 x! X
let credibility-money 0
+ U+ z6 d2 Y$ e; T/ b6 Z) A/ Jwhile [i < people]. T* b! v% }3 q0 ]( n" w" z
[) @; h7 i0 w" H, ~6 f% e  N
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! ^5 B5 V3 t& \
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ H  K) z6 j! B3 o4 i6 M! K0 Q
set i (i + 1)# A% b. S; Y2 s2 B$ L3 k
]. N- \, {  x) Q
let k 0( E: G" {1 G& l
let new1 06 M6 D! R- G; r  y
while [k < people]
+ F+ c0 s- {5 y) }; }! g7 U% X0 n[
- e3 E+ w$ X0 I0 Q) mset 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)* J' x+ j+ D0 I% I- W7 F
set k (k + 1)( p  k) R, g6 A" f
]2 e, y! x  k, }, y7 v
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 r% M% b6 M" \3 j% b4 X
set global-reputation-list (replace-item j global-reputation-list new)  q+ K! |5 V7 r6 s
set j (j + 1)& Y, O1 R  S1 j
]2 i: T( n- E, o0 u7 w! _- W+ E
end
( L" I" ^2 K! s! k8 L+ M4 Z
! ~% o9 I7 D! t5 Y8 A8 |! [* d/ b" Y/ a7 F1 M: a0 s

/ [' o: M& ~, s" h% fto get-color1 J5 y, [7 E6 v- ^3 w7 h

5 }' B: E4 u4 ]  c: ~0 W! ?% a( nset color blue
4 h" R; K- |$ t, a
end+ _0 _2 R2 Z  m' j4 u$ w( w
2 E; F: F* n$ x# h8 z
to poll-class
7 D  N; V/ K% G8 Eend
% {! |7 b& j$ `, g( n- E; _$ x
/ }1 @/ B  C6 j+ ^: lto setup-plot1# x6 [. m+ [/ w# G9 G2 I4 W3 m
% X- V7 t  E% g, ^5 ], F& O" H
set-current-plot "Trends-of-Local-reputation"
7 h5 n; M0 }7 U9 P+ r" X
$ |' y0 E$ p' F/ s. d9 d2 Z
set-plot-x-range 0 xmax
% G8 p* d/ H" u$ O; C% Z

' u( y, @- _, N# s2 q. Bset-plot-y-range 0.0 ymax

& O! G& c  `5 E0 t9 v! B  Tend  l- d* A% J6 I, x% i
3 ?# n1 f+ f2 c/ U$ K+ |( A
to setup-plot2
: g2 C7 g1 B+ G# P5 d( y7 i' N  J) ]6 Y0 \( c
set-current-plot "Trends-of-global-reputation"

4 x2 A5 A( e! B- _/ D
% N4 p; R5 H  r$ g0 v  [4 X- `set-plot-x-range 0 xmax

1 E+ z0 i' x' Z
* I9 e( P4 {3 n: ?. t1 \0 ?set-plot-y-range 0.0 ymax
' n( C4 P& j$ h: k4 k+ O6 B
end
: ]6 O- X4 v  `1 l6 {, q+ k/ f6 [1 D3 `, I8 m) |: C- d* K7 w. J
to setup-plot3% [) p! K8 g# c- {7 Q: }/ p# y

% C% R' h# z3 y" w9 dset-current-plot "Trends-of-credibility"

. k$ j* i8 M! C. P% W5 t4 h8 ^9 T
set-plot-x-range 0 xmax
5 G. A$ E6 q/ G) s% ]8 E- M

$ Y) e8 ]3 I  _4 X: Hset-plot-y-range 0.0 ymax

5 s! Q+ F9 T+ W% S3 aend- K2 p2 q( i* G8 t( B
1 e$ q: }8 s/ a8 E' X
to do-plots( r% c8 E4 ~/ b3 |' Z) X
set-current-plot "Trends-of-Local-reputation"' W/ {4 z7 M3 h& B- p
set-current-plot-pen "Honest service"
# B  `0 O( h3 X8 Oend
" o4 ~4 L$ k* f3 L
3 T- O7 N0 Z* K1 N- P9 `# L+ J[ 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.2 k, k. W; _$ H% f; M+ ?8 q: ]" J

9 i6 h% [$ _$ V# u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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