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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:4 v! G9 Y2 `" l4 U
to do-business * v( ?2 P9 F+ [$ q0 n& h% y
rt random 360! l4 T; m" M7 R7 O6 I
fd 1% n7 Y' ?$ R$ E! j' K8 |8 V
ifelse(other turtles-here != nobody)[% W( S& r( o, P5 l/ 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.8 y! D% U1 R! |
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, N; q6 h$ y  ?6 X; s0 Z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 O0 e7 w6 r  [( ?2 N   set [trade-record-one-len] of self length [trade-record-one] of self/ x$ ?! K  f  U: K1 x2 l' Q
   set trade-record-current( list (timer) (random money-upper-limit))
' r8 Q+ K- M1 ], w( I
- {, E9 i  a- Q4 e问题的提示如下:. i& i% y. D4 h4 S
. r* W1 T# e  w
error while turtle 50 running OF in procedure DO-BUSINESS. h; b8 @) t; R. o' N# l( W6 M4 Y
  called by procedure GO
8 M  B9 W. R8 w/ U/ AOF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 Z7 H5 s: Y. [( P5 O
(halted running of go)
1 t$ [$ m' `, M4 M2 v/ ?3 n
5 T# B) }$ l. U; @4 L. _3 h; \) U; K: P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~~
. F) K" X8 `+ ^1 V% _8 {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 ^" Z# j- w: K* U1 Z2 u1 B0 I4 J
globals[
) {0 |- L- c  e4 lxmax
) v/ C& P! R1 S5 N- Fymax8 ?* {/ x9 D5 {8 E
global-reputation-list$ ~5 r* C% ~' O+ E0 G
) J$ ~/ W5 J2 V( t
;;
每一个turtle的全局声誉都存在此LIST
  M6 y+ j4 ~4 B, |credibility-list- I6 u) h2 M$ U; P' j
;;
每一个turtle的评价可信度
4 B+ n( m1 @8 e0 nhonest-service
3 F3 g6 ]7 L+ A$ z7 F# |: ]1 O* }unhonest-service! A) a5 g! @) K$ x) j) Y
oscillation, X' S( U. M$ f, J& @) H
rand-dynamic
" ]) D5 K! c! D2 g' v]
. ]% F$ \' ^3 @3 C- C* [: q6 d' ]5 P$ \
turtles-own[
9 E1 D$ E/ ?5 G; S( T: Btrade-record-all
; r7 R5 |5 i2 x9 Y0 `' r/ g9 T;;a list of lists,
trade-record-one组成, O8 y* t6 t4 t  ]7 Z' m5 T4 J
trade-record-one
( P2 [9 z2 W7 t, s% f% ?& q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& s; A" B' A8 ^  Q/ P" h) y4 X

' u* U( T0 D3 N& z' Z% B" B;;[
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]]2 j+ d$ P( o+ B) n5 x, n) t( ?
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]
; W; R( J) S  t0 D, ccredibility-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
: M2 m& F6 P3 g  x4 d, jneighbor-total
, g5 ~6 |5 s$ u" j;;
记录该turtle的邻居节点的数目
( Z4 y8 d; k( t  N' xtrade-time
: b2 L% V- v3 f/ ]' ~% T2 ?;;
当前发生交易的turtle的交易时间
# r5 G( I$ P$ m) c$ H" |appraise-give
5 `& T( x' E# ~* P& [; {;;
当前发生交易时给出的评价7 W. l2 u" A6 r' k8 z
appraise-receive
! ~+ L4 B' i  O$ A- y# n;;
当前发生交易时收到的评价
, Q, q; ~! Z( H4 Q; Cappraise-time
2 J4 [! B: u0 H# p;;
当前发生交易时的评价时间
% `1 M$ L; f1 ^% G/ p( xlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉3 _) q8 |: N8 e
trade-times-total
7 }$ r& L8 I# K$ J* q3 R;;
与当前turtle的交易总次数
* a, a5 m( S! }2 htrade-money-total5 P4 n8 Q# E* R# j* F
;;
与当前turtle的交易总金额
; r( A, c3 C7 y4 Y" Plocal-reputation
; V6 }4 }* C8 l6 Y* g" N2 xglobal-reputation5 y1 d; u7 S4 c
credibility9 H" W  N# U, y
;;
评价可信度,每次交易后都需要更新
6 Z7 i' x+ S+ ^7 tcredibility-all
* M( m5 j; [. `6 k' \% F0 H;;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
( R: U- e! w1 F7 Q0 P% t) N% N) @. U7 f
;;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
1 \6 O/ \& V5 |3 u' Z" S! gcredibility-one
* F3 o+ c+ l5 T8 L2 T;;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
5 X5 y: l; }: V- \global-proportion/ ?) ^4 N, b4 N% l4 X) _+ M
customer
5 z8 B" `8 b' H: k- H4 t: qcustomer-no
8 H2 l" }" U+ k+ ~trust-ok
  Q4 E0 Q- N5 Y. {0 f4 [7 `trade-record-one-len;;trade-record-one的长度" b: D5 e! P2 x; _+ \6 c
]
* b, ~9 ?$ E) n, T8 k% y0 u0 X: l
: N0 n) V2 v$ w0 R;;setup procedure% T1 w* b% W& O( ^9 m. c( X) ]% Q, [

& c# t$ @0 M- A. |to setup5 y0 B& ~- D$ o3 i% z; m

/ y# ], E) d" `* ]0 m1 A4 {. J9 hca

0 ~8 a0 s; L5 G' H! J/ n& u9 t/ N8 g: ?  t! L1 ~; [! ]5 D
initialize-settings
  L1 W! T$ j* e: ]9 @) A. V

) N! K8 y; U2 S  lcrt people [setup-turtles]

* v: d; w% x  {" \' t+ p
7 K9 I& M1 W7 ~3 v8 l4 r$ P, Jreset-timer
* a+ g% z2 z# W. w: D

$ o; E: W# E# x. w! vpoll-class
5 u9 u& p" p1 _1 }* x# S0 _6 _2 k9 {

& ?4 |$ @. x, T) \setup-plots
2 \1 y7 ^; P6 _, _( `2 y
# @) g: i: ]* s/ w! \( n- S
do-plots

' M. ]1 M6 v! m( N; b9 d# t$ gend
( l# ^# r" }1 M- e
9 M/ C9 t8 [" Yto initialize-settings9 h) J( z  r9 j, F: H1 C2 k
. E2 W7 U+ ~; A3 z
set global-reputation-list []
* [3 M8 i, t& l

6 Q7 k5 P# h  y! }" b( t& `6 Q  \8 n( sset credibility-list n-values people [0.5]
' S( ]) p2 \+ ?1 Z
/ H2 i: ~8 F1 k& Z: R
set honest-service 0

# p. b& R: q, K4 m1 t. c( M; Z: @; a/ h0 [
set unhonest-service 0

+ Z$ L" `. t! j9 g7 g
: B* L  i! {' `5 O1 K1 i# h' Hset oscillation 0

  Z' H& P- r+ B2 ~" d( }  t
  R$ t" k0 Q" z# d' k' w: E' f  [set rand-dynamic 0
; X. J$ w: z, U, Q  Y
end" |, K9 w3 Y! u! p9 y% @' e
$ f9 Q! g$ F# ]3 l4 @0 V/ E. l/ X$ J. u
to setup-turtles
# o6 w. C# e: J) xset shape "person"
2 d8 G8 i- i. l6 Y& J8 ]setxy random-xcor random-ycor+ l; {4 W( ]3 T5 Z7 I& v" ^# s
set trade-record-one []/ I" \9 U6 _# W+ H  G+ j( ^  C) x

2 E; K2 [0 {5 }3 t) P# x! vset trade-record-all n-values people [(list (? + 1) 0 0)] 6 r$ r8 z2 K$ |4 z! H7 }* z) `
7 V: ^3 X7 W3 }! R
set trade-record-current []
5 D$ C' b+ O- ^6 O9 f6 P# Q/ {. yset credibility-receive []4 t4 \1 r8 m# l
set local-reputation 0.5
2 y7 l/ Z' E- f2 J6 D1 U% i* Kset neighbor-total 06 R' j  i3 b0 v7 Z+ u
set trade-times-total 0
& n0 e4 m6 @# |* a7 N! J) c; qset trade-money-total 0
0 M: _. d- T  ]& A& T$ X  ~set customer nobody
( y1 ?  e/ E9 R6 C3 L8 j6 `# L  Uset credibility-all n-values people [creat-credibility]5 ?' s4 |9 B- W, u; S, f8 f
set credibility n-values people [-1]9 a0 V( a3 M, ?# W4 S
get-color
. V9 k# P; u$ }

: _" G7 q+ `* O! l% m' a+ rend
' e' D, i8 @. F# K' b
+ k% C7 t- _5 j  O. e& Lto-report creat-credibility% b- f, v  z9 A3 O: Z0 J% ?# ?
report n-values people [0.5]
; \6 O& U' X6 Pend
4 g, d) C; T# D6 q3 O% E5 C; j+ i: I& B
to setup-plots
4 U+ |+ q5 z/ E7 z. B- k+ x/ K' y( U6 R; y. r6 C. x/ h, t
set xmax 30

0 I( G+ ?4 p3 j& ?$ K- Q5 `! H- D! D( y+ x$ }  m- v- S
set ymax 1.0
$ {  J! f  y+ [( b% A' Y' z* Q: B

" X4 h6 Z0 N1 j; I/ k3 }8 oclear-all-plots

( w$ E, g5 g0 Y, {5 @) i# Q5 I8 n8 u: G  F" \
setup-plot1

. Q" M+ v3 J2 X& M% J9 I; a; h% V3 Y
setup-plot2

- G, `; d5 g. X
, L* g# A; ?: Z; [setup-plot3

" }9 I7 W( w  i" R+ ~' iend
: N+ v- D5 W# ~- Z! `$ W& F$ H* q6 ^( l5 ~
;;run time procedures
! m8 V! X2 ^$ J5 j0 ^
# R2 d. `2 ?8 uto go7 ~6 d0 \8 {( b8 ~8 Y; Y

1 C/ N6 D, |6 |) fask turtles [do-business]
- {) x% `8 o$ H! e% D* S
end& v( S2 j0 w7 p

$ _- d* Y2 g) D  y3 v2 xto do-business
9 \" I# h# t% J4 T8 J

1 F7 _$ P7 K: [
& K% Q( e- X$ [1 w. h* E* \* ?4 lrt random 360

$ K/ l. W! Q4 o: T
, f1 w, j! _. x  ]fd 1

$ V2 w2 q+ K1 d3 |! l2 J+ z( i5 Y  a2 o1 n" t  o
ifelse(other turtles-here != nobody)[
- ]" n: j+ W: j; Q

! C  |% a# d. r6 g8 m" o0 lset customer one-of other turtles-here
5 l' w) V, H  h
4 X1 \7 P. r) [, g$ O
;; set [customer] of customer myself

! e  }: |+ b6 R. O
3 l7 r* K# H9 A$ f2 \7 D! Aset [trade-record-one] of self item (([who] of customer) - 1)% q! y, @$ R$ ?; e7 z
[trade-record-all]of self
' k9 I4 C, S- ^7 c5 m, q0 B;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% N9 u1 ?5 f! Y6 v6 X% t) Y9 H

# ~4 Z: |* H* bset [trade-record-one] of customer item (([who] of self) - 1)6 P: }, U1 ~( ]4 T' t
[trade-record-all]of customer
: k& A# e" J- y4 ~1 }/ Y) L
1 T8 p3 i/ X. X( J$ G
set [trade-record-one-len] of self length [trade-record-one] of self

; {! E* d# i- F% \
3 L. F* b- d9 v1 M4 ^+ C" Gset trade-record-current( list (timer) (random money-upper-limit))
2 z5 ^( C0 t* _. W4 k7 T' D9 u5 X' q; e

% D5 p/ u$ V5 x( X0 ?- Wask self [do-trust]3 {/ q* [6 d& w# [8 j
;;
先求ij的信任度! m3 f: T, t6 {8 B
/ ~6 K0 W5 z3 v
if ([trust-ok] of self)
/ n1 d9 {; ~: V; B. K;;
根据ij的信任度来决定是否与j进行交易[
$ X0 R- \/ _* `+ b' Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- s( a# S0 d  \! {4 f3 l8 {& _1 l" c9 \- \& j! U
[

& i7 q) `4 l/ R, Q
+ |5 u2 e' F8 v& l$ ^$ bdo-trade

  E$ I2 q# m6 D& J( }
' a! W, N: V% M0 r8 [. R; k* `/ s; ?update-credibility-ijl
) `6 O, \  l: G. {
" j: X" f; P8 u0 t  Y
update-credibility-list
# w/ a  L8 Y5 J  i2 ^  E
7 `6 I" s' J1 `+ }6 X  g8 u

- E. t7 f* G5 p- k& s  j9 [update-global-reputation-list

% b% b. ~' @4 i+ l
5 R1 s8 k+ n; M3 v$ Spoll-class

; J2 S1 R- _$ L* z* s/ p) v5 k( b$ M1 Z, m+ j
get-color
/ c1 ]4 t* b& ], S( j! k" z! G
# l) j" D2 m. y. }
]]
' j' {- v; X) i9 m# k) z+ o. N
/ X+ t; h; u) P5 o' J6 K; A' ];;
如果所得的信任度满足条件,则进行交易( \3 e8 s+ F8 ]0 g

1 T9 q8 F+ J; b6 {8 ~( \[

0 c0 ~: H1 C# N. s5 j2 ~- I$ F) Y# {- t. Q& M6 P% V1 V
rt random 360

6 p1 a3 _$ \; d0 c% z; f6 a* r; _: f4 ]# F" C; g# [4 n. z: E
fd 1
4 y: X1 f8 Z% a  i  g3 M

, t0 w% \- F# b1 Q  ]# C) F]

* C' L  p7 Q" R+ M  I6 A1 b' e
9 {$ S, g" J$ qend
) Y$ J/ s3 {$ `; p1 ~! j& e
! P4 b' c* Z# @7 {- W( L
to do-trust 8 @" X! M) I8 S6 ^) b3 ^4 D
set trust-ok False" P, u: x) }: z  l8 h$ X

# E7 }) \6 Y9 j( X& V

( P! m3 O# x1 w, Q# M) ~9 xlet max-trade-times 0) w9 I- K$ k' Z; v5 l
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. m3 |6 W* S! }
let max-trade-money 09 F" B1 b8 W* D4 q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" Z& y  a! o$ Hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* _: w) j& f3 e4 [4 f

2 D8 p5 a4 {9 C: s1 M) K3 ^# `' H

2 m+ t$ W$ Y& u9 A0 Hget-global-proportion
( o9 e1 i$ E% F9 C- alet trust-value" S1 a" b4 b5 t' ?5 N6 c
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)
/ _/ x3 u' N* N5 _5 l' I
if(trust-value > trade-trust-value)
3 v. }/ ?( U) H7 J[set trust-ok true]
3 S5 e# A6 \: ?9 E9 c1 lend
8 _! x; G& G8 y3 b7 m  c0 ]
3 M/ X5 R9 u. W9 Qto get-global-proportion  E# O1 S9 W( {% \5 T
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" A7 d/ X$ `  T8 E; e9 [[set global-proportion 0]! E" P0 I" D/ W( U- b7 ]
[let i 07 W( a: D6 g& P4 U; \1 D
let sum-money 0
' b" R0 E* {# M( X6 V& z& pwhile[ i < people]% _( h0 n- q+ q3 [
[
) }6 {9 i, K0 H! `1 Uif( length (item i
$ ^3 t1 r3 w$ \6 d[trade-record-all] of customer) > 3 )

' f3 @. B. e/ L# J4 G2 p" S[
* s/ ]; N& b: J, s3 {set sum-money (sum-money + item 2(item i [trade-record-all] of myself))- v- o: w7 i( F
]
/ f5 [$ ?* L: \+ S) b7 n- `, N% _4 n]
- j6 M% s( n1 c+ xlet j 0
. d7 K4 M4 P" t7 Z0 e( [+ l2 clet note 08 L6 G% {% @2 O/ V
while[ j < people]
" |. M5 Z, C5 Z+ L[
% I1 V/ o) J- G! Eif( length (item i
( V8 |# }1 A/ F/ g[trade-record-all] of customer) > 3 )
$ Y% F/ E& B2 S/ D4 K) v4 A
[, e' e3 K& Q4 A0 h# Q5 ]  T
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). j; K5 W, H* }( a! h  m2 z7 r
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# ~0 s4 e9 M6 ]2 v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# D/ a) e- _7 L! F
]' @2 b! B( E- i! }9 p
]  A( U$ ^+ }  G+ b
set global-proportion note
/ ]- n6 R, Y  G+ z& _+ C]
' i" u0 _* ]3 k: `: Mend
6 P  g! J2 l$ E0 ^4 S6 P0 G  ]4 Q: T+ s7 @2 W' n
to do-trade
" W2 W2 |* A' p: w2 H( d7 A;;
这个过程实际上是给双方作出评价的过程  Z5 k1 y/ E, E; u+ M# i. G! r7 n/ V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! e  U" q1 w% ~8 w  E3 Z! @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& X$ _" m3 _' e% Bset trade-record-current lput(timer) trade-record-current) f; g7 {+ N- k# c: t; Q& H
;;
评价时间& }. O" J* ^; u5 Z. T
ask myself [
4 Y$ A% Z9 W& C, ?& z5 E( O& kupdate-local-reputation
3 M& Y) c% H3 A* X; O' zset trade-record-current lput([local-reputation] of myself) trade-record-current6 V/ [% \3 n5 K& L- n* i5 l
]; d4 r; Y. O/ ~! G
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 I" _: y  y! R7 V* Z4 v" N
;;
将此次交易的记录加入到trade-record-one
5 o* b/ _8 H" u: v4 s" Z2 Xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% G1 X, k$ O1 t
let note (item 2 trade-record-current )
% C: d* s3 e4 {) Wset trade-record-current# ]6 b6 U1 w$ d6 P. ?
(replace-item 2 trade-record-current (item 3 trade-record-current))
/ U' x$ u8 r' ~/ E; A' o% W
set trade-record-current
) G/ f7 g6 E# R- l5 M2 ?(replace-item 3 trade-record-current note)# i3 |& N/ P4 \/ E! h' R

3 i) o4 \( Y5 t) M
2 ?- ~' S2 p' g0 R
ask customer [3 n7 m5 t) N+ `9 Y9 F; B! ]) ?2 {
update-local-reputation
( e% `- ?* C9 X& e8 Uset trade-record-current2 N+ n# j5 f* k
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 H! @' z5 i& ]5 G
]
, @) }9 G- s) Z' `" R2 f+ y! m" v) g. O' c# B% N
' e% C+ {* s3 c% |' A1 A0 P' d& b
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ h' T( b( {3 D

# H. h: X7 l7 {& sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" o6 I7 F: n# s7 e;;
将此次交易的记录加入到customertrade-record-all
" z2 a$ ~- x7 xend$ S& p- h* S9 k" L' L" J8 Z2 E

! q+ t7 U* M; d1 |/ o+ t# ato update-local-reputation
5 @7 |: ]6 ?/ Kset [trade-record-one-len] of myself length [trade-record-one] of myself" ?. Y; W/ O1 ?* Y

, ?8 n0 N  L$ C; Z( M* s2 H& ~/ i3 S6 ?! i. J" m( E; p* d
;;if [trade-record-one-len] of myself > 3

2 Z9 M6 g" g3 }  M( ]' f4 {& iupdate-neighbor-total
# {' `- h& }9 A- b; `! Q1 h; M9 e;;
更新邻居节点的数目,在此进行% s9 m6 G, L7 d  b3 W' \
let i 33 ^9 T0 O: D" I
let sum-time 0) x, X$ A. H2 w2 O$ |
while[i < [trade-record-one-len] of myself]
' j2 O6 R1 k9 [+ m; I[2 ]2 O0 k7 O# j9 Y! q% `2 g
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* _* J2 l/ t! z  A7 k2 }; ^set i
& q" v2 ]& o; V/ ?8 [# Q( i + 1)
8 L& w& a% u$ g/ v
]
; `; ^! Z6 t0 F) D+ olet j 3( N2 a: k0 ~  d/ ^4 l8 \
let sum-money 06 x* |* i& `3 [+ y( l
while[j < [trade-record-one-len] of myself]
4 Y5 @0 R$ b# \; f: s' V[
" V7 Q4 l. l2 C7 @; y) `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)% g; [" z! e0 H- g5 |6 c1 R1 r6 `
set j( H' `+ S* a, [9 y, H, L1 c
( j + 1)
8 S& F+ U' Z: n$ j# [' l: f
]5 X; F7 Q$ V3 s) C& w: f
let k 3
9 E8 i1 _: l9 z) O  u1 C3 \( p& Blet power 0& Z2 i7 F  [* ]$ }1 S6 O* O' N
let local 0" w4 O, ]' b- f2 u' L/ y
while [k <[trade-record-one-len] of myself]: O2 }* t$ e3 J6 A& n
[0 A* U% K, P/ M/ z  U( 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) & {$ `0 x! J. g/ T$ N
set k (k + 1)  s5 x6 d3 A( n9 f9 L9 E
]
2 j" a$ p7 e+ e# u. Cset [local-reputation] of myself (local)
  n( B* T# o! W* q8 I8 Nend. |2 g5 \2 b# b( P/ b

& \# p! w, w2 M0 x$ Y* s& Sto update-neighbor-total; d& w" I# M5 `$ u  x  T# g5 z, y

! U% g  C. ]5 Z4 }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], _* c) u) f) N$ r5 o* c) \

/ z8 N: c* Q- ^  f. N

+ o" G+ _, l% r: X6 k' `: O. Yend  N' M* Q/ a* `$ F3 S1 v9 L% o# ~

" k6 P% }7 @4 {2 D8 a5 }& p$ yto update-credibility-ijl
! D: S: W- {* F2 f& Z7 \5 m+ L. Y/ s, `1 y* [
;;
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。
# t, o) ]# ?, U+ Blet l 0; P. ~. r# ~! y6 R9 ~2 m
while[ l < people ]
1 d9 c% b* @* t' p% I. j;;
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 b$ ^; R9 e) {% a) a" X* d% U# ][# f' g; g6 t+ B
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 t0 O9 l0 I8 R8 F4 m9 rif (trade-record-one-j-l-len > 3)7 w' {8 |: y* F; B  i+ q& a9 P
[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. S0 k% ^2 S$ b: @
let i 3+ @0 n; F6 n' r% h6 p
let sum-time 0
9 m6 E% D6 ~& \% u3 vwhile[i < trade-record-one-len]" N% x; y3 y6 N) O
[: P% ^7 E6 l4 O! ~* R% d
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 s7 \* D) X, M
set i
3 q5 \6 A, v4 w( [5 W3 f( i + 1)

$ W) g! U0 I  A: X3 M9 @; `7 D]
; K7 W1 d4 F. Slet credibility-i-j-l 0
, T% u/ e+ W; e" j; r;;i
评价(jjl的评价)
, K2 |/ L1 y+ d# nlet j 3, J: a- @+ g  x: D8 v9 y
let k 4
9 J5 E' V( {! @/ cwhile[j < trade-record-one-len]
7 J& p, u( Y! y, o8 t+ B- Z[9 o7 d" t) \! w6 V7 v6 J
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
  [/ i6 E0 e! x# H7 tset 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)7 T! ?4 w! k7 M9 r
set j
. t/ [) L" i: {6 E9 p  s( j + 1)
' S7 x3 ]5 S  F9 U
]
+ ?& e! s7 m3 lset [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 ))9 ^) |  P$ c+ x8 j& D0 ]1 }5 `

. @/ n2 |5 E: o& s

6 i9 v. N- L) G6 dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 ?9 Y. y6 A& i( C1 ^5 i;;
及时更新il的评价质量的评价4 w$ U  R! A0 H# e& J1 K
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ F: N2 ]' R! e0 E( m8 U  `set l (l + 1)
  T1 U3 N/ a$ G& k9 E]
+ p3 m5 ^+ N. j1 Y  U- g6 ~end/ V* X- J6 `4 H- o

7 X: j' {2 \3 `/ Oto update-credibility-list: E9 L+ t5 {2 v# T
let i 0
2 S' A: g# y9 W) v' l6 Zwhile[i < people]* a! J# @+ ~: \3 Z
[
" u) K% T8 ]2 J; Ylet j 0: u0 e/ K8 h2 b7 y
let note 0
$ T+ }0 c  x! ^4 h  P" [* O( p( Hlet k 0
- S8 O; b( l4 q* c6 S& W/ T;;
计作出过评价的邻居节点的数目* A  ]: Z, ]( H8 R; P* E: v
while[j < people]
, ^* A4 K% ]/ B1 M. L! L! b. \[
  n& g( P: M+ d/ d( ]/ yif (item j( [credibility] of turtle (i + 1)) != -1)
; y/ j" J% B7 ~) a" A1 v! X;;
判断是否给本turtle的评价质量做出过评价的节点3 M, r$ r% h9 t* ^
[set note (note + item j ([credibility]of turtle (i + 1)))
( m6 [: |9 ]4 W! [( l$ t;;*(exp (-(people - 2)))/(people - 2))]

  `  t0 z# Q- k9 P4 ?0 U  hset k (k + 1)
; D9 V( B! e' _]
$ d1 r- j! R7 X/ k* C) Xset j (j + 1)1 V0 c' D) h+ j) G
]
( U' K- H3 M4 O1 O- D) [4 L4 h& wset note (note *(exp (- (1 / k)))/ k)
: H0 z3 F$ X  c5 Z: V  Q0 dset credibility-list (replace-item i credibility-list note)' e* a  l' H0 f. b  t
set i (i + 1)1 K5 l  `! [+ S
]5 L! h3 T  D& @/ @0 t( s% D
end0 x$ ]! R2 T* Q" u1 g* B

4 c/ f# m1 ~+ x, u( N* D  ^- h/ o* {5 R) qto update-global-reputation-list
3 c7 k8 P, J8 Y5 mlet j 0. W& K0 h; D$ Q0 h/ V9 t) T3 x' m, s
while[j < people]
; a) O5 e% X& k+ K( @[
( ^2 \9 V* S- [& E6 }5 C1 n& t$ nlet new 0
* c* U/ @0 Q$ g5 d, _" X;;
暂存新的一个全局声誉
* X. `9 d5 F% J6 Z6 b0 xlet i 0+ T+ b. W8 A3 T. S: V( u
let sum-money 0; t* C8 h- F/ M/ ^: q$ E5 V2 k1 G/ v
let credibility-money 0
7 @2 t. E; s) k: [while [i < people]4 G# e* c. A1 M. m' ^; f' e) q
[/ J! S+ k9 p) r) a: q- z; R6 ~
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# A+ r; e1 U$ N# |5 ?5 o' S$ ~" mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- C  t0 e" M: z$ i) ?" G2 R( Jset i (i + 1)
8 P6 O0 P8 ~4 b0 m( K], }8 d5 k# O8 l9 e$ |
let k 02 p8 Z# |4 e1 m  p4 u/ `
let new1 0
; l2 J' B! k! V! f& i- ywhile [k < people]
; m: f' v0 J4 N+ M[: d1 R0 Y4 j( m: Q8 G4 a
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)
, o. I4 a  N; jset k (k + 1)! ^% c. Z2 k7 o: D. U# P9 Z& o
]3 @% T; a$ x% ^& Q) i+ g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 o2 M, I; }. [/ Y  ?: F7 aset global-reputation-list (replace-item j global-reputation-list new)9 y! |2 }2 T* _( ?* y, K
set j (j + 1)* |1 |) M# A0 e: o9 w' C
]
$ T1 J% f+ G. l( K. J- }* a% Cend6 ?( C) y3 l5 f- C: {1 `7 C" N

& F$ H! {: E; W. ?/ C
1 P6 v$ N0 Y2 \/ s
" A1 x7 g1 H7 ^! t# u( eto get-color! D0 f9 Y) u% T! E

" A$ X* u- H. t' z$ D! Rset color blue

; K4 e. V3 H" yend
( a7 v8 r4 E1 u! O
5 j# b8 l8 }3 w. P7 vto poll-class; U1 J; m! K9 K5 y: J' W7 R
end
% w! D" B' M  ^6 e6 j; R' y: p
, K4 ^4 _( v+ T- o0 {3 j% lto setup-plot1
6 `- z$ n8 r& ]
% S( I: h1 a& T3 K$ k, n& q& Kset-current-plot "Trends-of-Local-reputation"

2 r/ A! P* W. n" J' n
& b% A0 M5 u1 E6 _* u% |set-plot-x-range 0 xmax
8 X; b' k# o* P! y8 O+ F! J8 H% [% K

2 p' Y# z* B5 ]0 G0 `3 v$ f6 gset-plot-y-range 0.0 ymax
3 W7 V  M; q) \" y$ ]% _+ j" J
end' x) h/ m+ }1 @2 u  n
& v2 r7 d2 m6 }/ |2 r1 U" c7 E( j  }
to setup-plot24 [$ N2 R" W$ T; I% b+ p

$ }. s% `& @3 l0 S" R( P4 oset-current-plot "Trends-of-global-reputation"

7 R+ z0 w+ M" D- c
2 ]3 I$ X" S! ]* T& kset-plot-x-range 0 xmax
2 ]1 \% O; e* [2 @' ^
: r8 g! m2 L$ x- a$ y$ z: W
set-plot-y-range 0.0 ymax

+ l2 Z) M( ~8 x  X+ I# tend
, Q$ f- i9 n1 i" G8 m  ]2 }. e/ f' O- T$ r, |, X' @6 z% |
to setup-plot3
7 A" K. A* j% a
: F- ~+ C! u/ g# {6 R% j% iset-current-plot "Trends-of-credibility"

' i& c& V# S+ B& U: @- u$ Q" g1 `! ]0 [5 M8 S3 Q
set-plot-x-range 0 xmax

$ f$ R( y7 f4 r0 R* A3 C
$ a# i& A6 z' h6 tset-plot-y-range 0.0 ymax
! N! b: g/ I" s+ E& d: H4 t3 U
end" Z; Q: O* M4 d2 V6 ^& \
9 v: U( }2 t' U8 z- \8 t
to do-plots
/ @9 M* _  h- u! F, k: G  u( Kset-current-plot "Trends-of-Local-reputation"
( |$ v9 x( F  I% @6 |set-current-plot-pen "Honest service"1 Y" B" Y. e, Y
end
3 q' l8 N% c- v, D3 t, l$ o8 l
9 u4 R/ |3 f& \( d* G( }  d# D) K[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.9 D5 F3 d# F! M: x% c; e
  Z9 x4 l+ ^' b* b4 a' I6 I$ k( 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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