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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:+ X* c  h$ d6 c1 R
to do-business 5 k; |( N, W5 W+ e4 [$ I
rt random 360
7 O5 ?: b2 z: f fd 1
7 X/ X. a: t9 G1 E( w5 T2 D- i) t ifelse(other turtles-here != nobody)[
, y% m7 S( u5 Y4 C- h   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.# c( e% Z  I1 K. I6 N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 m: m5 `2 y5 M1 p0 ~   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 W1 C$ p3 m/ N7 |  z6 G2 [9 O
   set [trade-record-one-len] of self length [trade-record-one] of self- _) F; ~; ]* J4 N5 J, `
   set trade-record-current( list (timer) (random money-upper-limit))2 f" \# I5 S* l9 D

0 [. W' \  J; X7 f5 _7 N5 ]9 H- t问题的提示如下:; K' I0 `$ p) S/ E* Q- D
6 y% B' D& c& {; o
error while turtle 50 running OF in procedure DO-BUSINESS
! S" [/ a- G6 d, T: M' M* n4 z, ~  called by procedure GO0 g6 }, C( ?7 a# W, I% ~8 n* C
OF expected input to be a turtle agentset or turtle but got NOBODY instead.. e2 }& i7 D+ @! L* S: n) t
(halted running of go)( b$ e2 K* e+ r$ V8 q( l1 k3 S

" _# P* l, K# Q! h; `/ b! _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~~( W9 J3 V% \% B
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 ^8 M9 q& n* k. L4 q9 G
globals[
  W! @( g. Q8 ]* Qxmax
0 h! R+ ]% c; H  e/ @ymax
. Q2 M- \9 ~$ x: |- r- A( E- |9 dglobal-reputation-list
; l3 |8 v! _  M( \) ^$ a2 p9 J* {# _* C5 A% n# L6 {5 S& t
;;
每一个turtle的全局声誉都存在此LIST
$ r& u" }9 @3 u# i$ P0 Scredibility-list
/ R% l5 l0 B' v. V" `- @; P;;
每一个turtle的评价可信度
- z& j: r1 ]. Chonest-service$ T" t: }8 N4 E8 v# q' }
unhonest-service
  f' Q! |$ M1 m8 a1 o1 h; ioscillation1 ?# C) c# c; c% K0 Z! V1 Z
rand-dynamic
. P7 C4 p: c6 k) q0 p]
& v( y8 E( N% X3 @# {! [4 X$ \: b8 H
6 @+ F$ ]+ F8 u" S; D2 }( |! l6 |& Y8 Eturtles-own[7 G8 D: l4 M& [; E  `& T) x5 w
trade-record-all
$ N) o* U( ^) e- h4 l. m1 v;;a list of lists,
trade-record-one组成: v% b. b- U8 {$ `
trade-record-one
7 |% D% y9 a6 _" L;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' Z3 o. g# R" f3 j4 z) @
, e( o# R) y& e% W. Q;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
4 f- Y  t0 Q. I: Z4 ntrade-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]/ l6 B7 G. p$ @3 a  e2 B3 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% P' l2 I; P/ a' Y, G
neighbor-total4 O# k1 i( `* \8 n6 x
;;
记录该turtle的邻居节点的数目, G' |2 Z8 Z6 N
trade-time
9 T' G! j1 R  }" X" D7 K;;
当前发生交易的turtle的交易时间/ W/ U6 }1 k; M# K$ z
appraise-give6 S4 N7 X* a8 I: ^  U4 M& W
;;
当前发生交易时给出的评价
. [7 i9 K' e  G) L; P2 X3 eappraise-receive3 W8 y$ v8 ^! x8 D6 ~1 ?
;;
当前发生交易时收到的评价: x" k* e4 T: r$ I( c
appraise-time
) b8 H# g; A6 k+ i1 U! N! Q( w;;
当前发生交易时的评价时间, u: @; P- Z) }. _* G$ |( k6 F, i
local-reputation-now;;此次交易后相对于对方turtle的局部声誉: ]) ~9 Z/ q+ e: }8 b/ k/ y
trade-times-total- q* Q$ ^) T5 S$ A$ ^' ?9 X
;;
与当前turtle的交易总次数! U: ]. Q/ O& l6 ?. q
trade-money-total# y$ L+ V0 I7 o* e9 V
;;
与当前turtle的交易总金额! o% F( ~  o0 D! p
local-reputation+ R) t* U5 H. @  Z* o7 }1 O. i
global-reputation% Y, R7 W; g. Y
credibility
! h% w# s- U" h& m$ g. n;;
评价可信度,每次交易后都需要更新8 ^3 E; B" d& i! g5 h1 k9 |$ O) v
credibility-all2 u3 f9 u: M7 U; F- O' O8 l: }- ?
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据9 Y" }6 K0 m4 K* E

- \4 ?- h) C- ^* m) H' b;;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' a7 Y9 V0 T0 q6 _
credibility-one
  X2 A; e2 j# b- d0 T8 a. `;;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people4 Z" @+ i/ H6 h7 V
global-proportion3 P& X6 ?; ?' p9 S3 _$ [
customer
+ _& y2 d- @: S  ?) m4 s+ i, hcustomer-no
/ W" n5 U# C7 Q$ \+ Q% y7 Ytrust-ok
# G, ]+ M  A/ h1 R( C4 T: \9 }1 \trade-record-one-len;;trade-record-one的长度  q- s9 D- @: Z" O! `
]
& j8 ~6 Q2 _  g3 a8 ~& }; i0 |9 o2 n
;;setup procedure
( V! A/ Z  w! t/ r5 x6 |. _
. `/ v: |- m$ q7 T! _. kto setup( m% x$ v3 W! q6 \
/ L# c* F9 X# C5 |$ Q. g3 D9 M. ^
ca

3 F3 G* X! h% g$ ]' T
7 E4 D6 H' B( n6 T* ~% p, ainitialize-settings

& l0 Y3 S8 o9 Z; B% X: \- V- [1 m3 y4 ?- [# c3 z
crt people [setup-turtles]

1 K7 T$ o8 o  x3 a; `, d% T6 d9 u' A$ b( a) Z* ~1 U! C
reset-timer

% i5 j# {% w0 N/ ~+ n
  O; \$ `* \. R4 q" @, J  ppoll-class

9 q7 B; ~8 t' q
, p4 o' ^4 R+ P& @2 |* wsetup-plots
! m5 Y( ^6 M' q' D5 `! h
0 R) N3 k* }2 T  J' T1 H
do-plots
6 m2 }) |( x3 S  p0 J% \
end' m; t$ d! @9 _/ s3 }; j

! D: q  ]4 s) T2 ito initialize-settings
& V8 E, _# ~& @6 A, n! g
0 z/ M: N& L4 Z, t% ]* Sset global-reputation-list []

1 n8 S, \/ o2 |9 Y! K/ X( y$ N! s
set credibility-list n-values people [0.5]
+ j6 K6 }, Z( A

& _) L. D, y- p9 T* Y8 K5 v9 tset honest-service 0

% H8 _# V* E  b) y. s) o6 W
/ ~- X+ s+ Y) o  ]; E' p9 j/ @set unhonest-service 0
$ U9 k, M. j$ ^+ }3 @
8 J) s6 o) ]5 {9 ^. b/ J' K; U4 L
set oscillation 0
' t0 R  m1 ^4 i8 _( |
+ U' l* ]; d# _. W6 f
set rand-dynamic 0
8 E5 G4 z$ s6 c, C
end: h- \$ X1 ^( G1 v( }- A  g
, ^- i# {% X0 t
to setup-turtles
4 l. A0 a9 y# [7 ]set shape "person"3 h) c2 X0 X2 w6 z; A  a% e6 l
setxy random-xcor random-ycor
, m6 D: q/ E; ?7 N$ N% e6 t  |4 ~set trade-record-one []
: p+ V: a! W/ y1 L* [

6 s  M# [2 Z: Nset trade-record-all n-values people [(list (? + 1) 0 0)]
; }" M* z  @7 g+ x6 l/ |' ?7 F
; e, g9 \& l1 N$ S" [. d7 @- c7 W
set trade-record-current []- z7 K5 v7 v9 }9 f) g0 [* I
set credibility-receive []* A- D- D) H6 \( I6 g
set local-reputation 0.5' K; s  a+ j9 C% H7 x6 b
set neighbor-total 0. w' n. B  ?/ p$ Q8 l+ h
set trade-times-total 02 q( U0 N7 M1 P, s
set trade-money-total 0
1 [; C. e! a% j* Iset customer nobody
$ A, |9 F- y& e$ [2 y0 Pset credibility-all n-values people [creat-credibility]
! a- r  [& k" D4 s! M% A. U6 Q% gset credibility n-values people [-1]# h% _  w/ f0 |8 G( {3 S. ?* K
get-color3 t8 P0 M& W8 Z# r3 U1 h7 ^

+ ]6 y  u; W: Z+ p7 A7 }end! D' h# q$ o- T+ {* Q3 Y! a

* g  d) t9 k6 n, u& s1 Tto-report creat-credibility' M1 y1 `% ]6 ~7 Y% y  V/ n8 F
report n-values people [0.5]/ h9 n2 Y  z  z* k5 u0 x
end0 f; ]+ H; _) \

2 u0 i3 c# a8 I) U2 E9 Nto setup-plots
6 D$ O# B4 J) G3 v1 c9 I/ [. t% u- o# X9 `
set xmax 30

( T2 T3 m/ d3 g. \+ D( `$ V6 d
  \+ {& b  @" L7 k  [4 _6 kset ymax 1.0
  l& ?# G% g! O- C
3 Y- f2 B! T( u( q0 B9 K
clear-all-plots

* ~; m* x" ?- V" V) L' t" c+ X" M: ^2 F1 x, C2 a! M' `3 |6 U: W1 h
setup-plot1

# n2 P6 C+ P7 K/ D  n0 ?4 n6 ]$ t/ B" S+ W8 ?+ R- T
setup-plot2
' h  F( v9 d0 \
$ \4 v6 Y6 I6 _
setup-plot3

# M% ~, x0 r( E# X* H1 ^% C. z" @end
/ b7 D3 \6 y, \# N; o! b+ S9 O, m* \3 V+ w! g. u0 G4 ~, a1 ~
;;run time procedures9 E" u& J- `, a. J, o

9 x1 n: n' I* O  Z4 z5 Jto go, V- i' J, Q5 s/ I1 r% g

6 ]: n, X: A" x0 o' g' Qask turtles [do-business]
2 h8 A+ v4 m- ~% I1 n! @
end2 y' `# G9 J$ G
1 S6 o; l( Z9 i# F8 b2 }7 ]+ W+ h9 t# w
to do-business
: t/ y* q! f% C& a5 e3 Q+ B8 Q% M

/ ^6 |' o0 Z3 D% J' t/ G$ I# J" q
rt random 360

  y9 t4 _# H6 R( S) P, r( Q: B- D% V, q) r2 r9 G. i5 s
fd 1

) `8 N6 N, H3 P9 L# U/ A+ D$ E, T- S, B% V! `6 ^$ Q
ifelse(other turtles-here != nobody)[

  U$ i0 q( n7 ~: X! N0 w# @* T; o+ O9 X# j, v6 `
set customer one-of other turtles-here
; X% R! T4 E; M/ p  o

+ m: c: a/ P' E;; set [customer] of customer myself
+ M% m6 m1 u) v' y
' w0 V$ G! H7 u
set [trade-record-one] of self item (([who] of customer) - 1)
, \. C4 U& Q/ h3 g1 m6 w7 V2 v: }4 \[trade-record-all]of self$ u1 Z# K" b0 H* \+ v8 N  W. g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( f0 b- R, O3 U' W! _9 ?" @/ ?. f6 w. C& K! W. b% E% |7 v
set [trade-record-one] of customer item (([who] of self) - 1)0 b5 G! P$ e* j# ]! |9 W6 H0 P
[trade-record-all]of customer

- [7 S2 E" j* z1 v% U- }, G" w3 P6 V- s5 u) G  J; n4 \
set [trade-record-one-len] of self length [trade-record-one] of self

  q: w+ N3 W0 ?: {- ]7 y" U7 V1 ~) j2 Z9 a& m
set trade-record-current( list (timer) (random money-upper-limit))
2 d# s9 V4 V+ J* R$ k" q

4 `! [8 c9 o: T# Y- ~ask self [do-trust]- }' Y& d' k; P& \/ U
;;
先求ij的信任度) B2 A: [- G5 {# {/ X0 K6 k
- m: t. {2 \/ r* N7 _- y1 S6 I
if ([trust-ok] of self)
- P$ V) N) Z. o$ A4 O;;
根据ij的信任度来决定是否与j进行交易[% ]/ g* W. I# d4 R" I& S
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 ^1 m; [4 Y, D6 A6 V/ h; r- |, ~2 {5 r
[
. M, P' d; Z; B" Z  C' L$ I; G! H7 l

3 Z. [$ p+ N5 m0 p$ Odo-trade

% f+ Q3 I) r+ r7 |; d9 a
- t% w% M) {: [; yupdate-credibility-ijl
( R3 f+ e$ W0 `( P) {8 m
. w' \5 C6 _8 c- z! I- D
update-credibility-list) j* [2 N8 v5 j" G# @0 p
$ c1 U, `- c) u' ^

1 ]) u. i# g/ L" A$ W* Aupdate-global-reputation-list

- O2 E3 k& P; Y$ Q/ ^8 r# O( O6 J6 P+ r9 n; T+ V& z4 }
poll-class

0 p/ P- @" Y7 o& D  w/ A9 ]6 D7 E' n0 @/ ~) H- D( T
get-color

$ b+ h. c4 G, ], u* R  U$ n4 p7 z0 G
]]
4 F8 B( k) l+ m2 n, ]3 Z" D1 ?; m  x( x( U9 _! Q; G( n# ~' N( F4 q0 X
;;
如果所得的信任度满足条件,则进行交易2 `6 c+ u) j) P5 _

6 s; v9 ^1 ^" H5 L& E4 s3 s[
- V2 @' O& G0 j  g' d. r% y

# ?3 ^# N' Q8 J' p& ~. m. crt random 360
# _- W& R! c+ I
: _& P6 E  O/ X! o: I$ q8 J
fd 1

; i" s) a1 u  w4 D
) u; ^$ y$ p* [  B) e( X]

+ X! d$ {& ]1 j& w
# K7 W1 Q# _/ d- aend
6 c9 E" G( R. ]& X1 ?

( @9 w; V) _- u, Uto do-trust 7 o& k+ P+ A0 g2 p
set trust-ok False% j; w* `* i9 G0 H

9 P! _. z5 j. ]& v* {9 O

) H4 e; q  M- f' plet max-trade-times 0. G) }0 w. Q6 g- E3 c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- K; P  I) R; {: G; ^let max-trade-money 0
3 h% k7 F+ l: Q* A2 @foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 a4 Y/ S$ {# A4 Q" xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 ^1 B6 C' a! u4 s+ A

. Z# n; a" c" E! ?& ~
, ?3 f- l2 `+ N! \
get-global-proportion
% E, J( l/ N; r1 D5 C" Elet trust-value4 N$ n1 ^+ W' d2 Y# H' F
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)

4 ~' V  V6 x8 ?' x! eif(trust-value > trade-trust-value)7 q' ^! a  @; {5 V
[set trust-ok true]9 e& f1 |+ w' l' {7 I
end0 v  a2 R+ j" N& E! r5 K' ~

8 W, v  K( _& L( s+ W& h9 E; M! fto get-global-proportion
, z2 U( m4 H% |" G  Kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ y/ Z( P4 {: }$ a' L
[set global-proportion 0], V3 Y+ w: C- i* d" S
[let i 0
2 ?3 f8 v9 j% I+ w) ~let sum-money 06 _' ], r1 G2 b) g
while[ i < people]
- b$ T" {. J: s* y/ ~$ \0 V( i[
; S  {8 X- V- `3 E# v0 a3 ^if( length (item i
; I2 ~' e0 U+ E[trade-record-all] of customer) > 3 )

2 e: h3 X$ A: Z' V: j" x[
+ g7 w+ `0 |, N# V: E. f( wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 o9 o  i1 D$ }4 N! \7 P0 X]
$ n& j- n& ^$ @# w]
3 j6 M! K/ Z. j( C/ F+ [& Tlet j 0$ q0 m7 o5 t; z. R8 @5 R5 L+ a
let note 0
! N% g. f/ X8 Awhile[ j < people]
" N8 e* \) A: T2 a% x[6 @0 _5 t2 G0 m7 l! K
if( length (item i
- K% x: `" R/ q; d* E) P[trade-record-all] of customer) > 3 )

9 s& n# J5 h- X5 a* T[
) i4 n% V7 i7 A2 H8 Yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# M) N; w6 m5 z" c+ A; w8 G) K[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 D3 S2 d3 h3 e4 i& s
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 M: ~" V+ p! Z; i3 n]3 ^2 Q6 {" @9 W0 |6 M1 r
]8 g* D9 \8 n6 x6 U
set global-proportion note- H0 T2 z/ q& k  y
]9 j. d' P) X1 h. b
end
& d: O1 b% Y% r( ~* u6 V. v: B& H0 c1 T
to do-trade
8 p6 Z4 E3 c9 ?- y1 m;;
这个过程实际上是给双方作出评价的过程
9 V$ S2 ]* Q  i! m8 W& iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 V4 D& [" @4 d. Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, j( W$ `) a- V
set trade-record-current lput(timer) trade-record-current4 A8 T  {/ F6 R# h
;;
评价时间
% |; P' @6 ]! T' G! Fask myself [
) `7 g/ s( C: J" J$ Nupdate-local-reputation, x1 ~" e& X. G3 V* \' p* z" q
set trade-record-current lput([local-reputation] of myself) trade-record-current
1 ^/ B' I. ^1 k! F5 F! ?]
& c3 w# w& o1 j: I. `) B# _set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
& x( Y! X+ r  t0 m;;
将此次交易的记录加入到trade-record-one9 G3 c& Z, s# J' M/ A8 c4 d' v
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- F, z: I- |2 A* z* V& E
let note (item 2 trade-record-current )+ O- _1 n  Q! M) p
set trade-record-current# M! a: L" _& f5 i" x) M7 ?6 s
(replace-item 2 trade-record-current (item 3 trade-record-current))
* M4 s- ?# l' [2 m' F0 X7 e$ O
set trade-record-current, }) {, a. Z8 U/ r: L
(replace-item 3 trade-record-current note)
, f7 V6 s- C% [+ g. O; M) z& U6 Q  E; N& v
( ?: ]+ k- L: B% l+ M
ask customer [  Y4 R. ?( ^5 K# B# G* \0 [  L
update-local-reputation6 C& O  D2 y4 g  e2 d
set trade-record-current
$ p# T1 |4 k! b- @(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, b2 N; Y  V$ u/ Z2 x8 U]% i8 a0 B$ I7 \+ T! y2 q& }
& b; u; q( j" y  A# ?) w' A

7 d% g6 o% v" H+ Z5 qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- z1 i2 V- W0 f  E+ s: Q
1 f+ z9 z' v7 i6 F- }+ G# g8 _* D
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" Z: d' U& |9 G& r3 M' `; h( g$ D, R;;
将此次交易的记录加入到customertrade-record-all* Q/ W0 v7 f( T" A4 H- t
end6 o9 t, E$ I% c* X. g0 J
- R$ q2 _; G. l2 s+ x
to update-local-reputation& E) x* {+ K- f# H3 p
set [trade-record-one-len] of myself length [trade-record-one] of myself: Q& \  x% u' h' T: p

5 K" m- G2 b) o& ?) F4 W& u% Z2 b' e5 f" Q, X% L; t+ O
;;if [trade-record-one-len] of myself > 3
& {! Z+ C; r8 ^! f: U" c% H
update-neighbor-total
, F0 i/ x/ F  l8 d" x;;
更新邻居节点的数目,在此进行! R  v' C9 h% m2 A( \
let i 3" A6 ?3 ]: r( f/ Z5 I& @& w' k& {
let sum-time 0& B4 j$ I+ t6 C9 O
while[i < [trade-record-one-len] of myself]
# N+ F/ ?0 z" i2 F2 s$ V  R7 }[
4 K) n: N  S3 z4 u& Mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 `  L8 Q- }* P  ~/ T3 iset i, I7 \  y6 n- e
( i + 1)
) I0 W% Q% [1 [. m
]; I2 B+ t6 e+ c6 c' z3 F0 m
let j 3
9 I$ ?! H/ N$ _/ d8 t) d8 }let sum-money 0/ `3 M* z/ `0 d7 E
while[j < [trade-record-one-len] of myself]- {% ^) a# N+ {
[
" y& n3 i6 ^) tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)' P5 e. z% g/ P& g6 }7 Y+ }# h
set j& E" m. s5 T/ `6 Z' K- k
( j + 1)
0 B8 @5 W8 L# M
]$ L/ Y- m+ z5 t. ?
let k 36 M# R2 D( O; t. f: M
let power 0
& r' @" X  w2 X  _! W8 |let local 0# }0 m5 p; ^9 k+ F
while [k <[trade-record-one-len] of myself]
6 S2 V6 O. c* v8 h; m0 M2 }[) C# }6 T: u$ t, O& @) x
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)
  W/ C& |6 E; C0 @set k (k + 1)
- u2 V4 d' a$ ?% |]
: x6 W0 @* B/ d& R9 \- b/ U" \/ L* Yset [local-reputation] of myself (local)
/ a, n- c# N, yend
1 t( u+ [) L$ M5 q. d% a9 T* P
* r  W2 w" `; c2 g" Z% C4 q& ^2 Pto update-neighbor-total
+ L/ K; {1 [  G* r( q
4 }) K3 r3 ]1 O1 W3 Tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( J0 u9 V$ O) I+ f

* ]* X* M5 \* ]2 K. g* Q) C
/ f( g- B" E+ v0 r% |
end1 x' a5 h* P0 Q, E/ t0 x# u
' z6 M- Y6 G1 H  d" Y, m2 G! B
to update-credibility-ijl # Z) ]. _8 E  b0 R) }! L4 H/ P

* o4 c" ]6 }) N* |, [! m. };;
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。/ a4 ?3 Z/ L: y9 Z5 @
let l 04 Z5 W% Z0 F+ Y! u4 J) k9 f
while[ l < people ]5 F1 ]0 z" o$ @3 l1 I; K
;;
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
/ ]: V) x1 V; e9 L3 j* ~; U0 A+ e[
$ w! U9 D8 m3 d, R2 }8 Z8 llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' y; j, H3 A5 Mif (trade-record-one-j-l-len > 3)
0 ~* F) W# S0 c! c+ v* 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! B7 t% a+ W1 B2 R: B! l
let i 3
% o* [* r0 u" H* O! A1 Glet sum-time 07 G3 h. n& x, y! W
while[i < trade-record-one-len]
  c4 O) o4 f& J( n, T[
9 E8 V! ?2 ]/ E3 t; o+ dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ |$ N" j% c% X6 ^, s+ ]1 v0 O
set i: v1 w5 `5 G2 F; {& \4 f2 U, A
( i + 1)

  d; G7 U6 m+ ^8 \" _1 D]
& i3 `8 p, O$ z. P8 M' w* E1 Jlet credibility-i-j-l 0& ]# i% r# p. U2 z/ n
;;i
评价(jjl的评价)5 |+ {5 }+ \- z4 q  `9 L, _9 y
let j 34 L# g& s8 s6 `; `
let k 4
: ]2 q  U9 H7 ], vwhile[j < trade-record-one-len]8 c9 t- K; R  ?2 x3 F6 l
[  U; J- N& B4 s5 D9 b" p6 I
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( d& Z: ?3 U" L# r
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)
% W! x1 y' S. b2 hset j3 ]6 a) o; s& @8 k! D3 u0 M
( j + 1)
1 u; P/ P, B* s; L- g
]) s2 |+ u2 [+ [3 ]' P
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 )). [, Z" m0 o4 i" y4 w

0 j+ z/ t" f/ M4 I' b# g

- j& d% O* H1 E  G2 r' ]1 {- c, ilet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
1 H8 k! @9 T  X; p;;
及时更新il的评价质量的评价( `2 n0 B4 W$ _9 P; y% I
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ u' I% k! U5 S$ r7 v" k
set l (l + 1)
7 S+ Y1 ^* O+ j7 q3 K# x* _8 D7 m5 j]: z6 x$ Q0 r. j  r
end
' q2 Y0 v& F' L
4 i  ?# e# l5 I- @  x; I# dto update-credibility-list* N6 a" |" N) a# S& P+ p
let i 0) \4 @5 |% H& j% m
while[i < people]
" P) G/ i1 |2 z[3 N  r7 c0 j/ G5 Q! `
let j 0; n* \. ?) @, \2 a4 j- d
let note 0
; j, c( D6 S; dlet k 0' T! _  [! z9 Z; o" R8 r
;;
计作出过评价的邻居节点的数目9 N' r0 E' V& Y( B0 I) C  a
while[j < people]/ M' ?* v6 \; w( f
[
' ^; e$ v/ [6 aif (item j( [credibility] of turtle (i + 1)) != -1)
4 X5 S2 P! K2 I. W3 ]7 v6 I;;
判断是否给本turtle的评价质量做出过评价的节点6 o% d0 o  P8 Y! c# W( U4 m4 m$ R
[set note (note + item j ([credibility]of turtle (i + 1)))% z& O. H2 C9 W$ H" B1 y
;;*(exp (-(people - 2)))/(people - 2))]
1 ^' }9 \2 E0 y! S3 l
set k (k + 1)
4 k& K: D+ O# B1 z+ H]
4 _9 [% T5 L1 p- a' m  M8 ~set j (j + 1)
) C' Q, A4 {4 \& B- B]
. Q4 _5 y  F: iset note (note *(exp (- (1 / k)))/ k)8 r+ K/ @" E" e8 C9 g2 j
set credibility-list (replace-item i credibility-list note)" Z% z$ A# c0 `; D6 _5 f9 y
set i (i + 1)
  e& b9 ~3 i, A# _' A/ Q3 w]
- g7 J% [$ Y, o) Yend* X# h2 A( X3 e! G) Z

+ E# R3 {% B& A+ E8 F$ ~to update-global-reputation-list
3 B( K; @+ H, b5 k! U1 R& nlet j 0% X& y7 L' r! `' r, i
while[j < people]6 R! u+ L! j) e% E( u' V5 m
[1 y! j3 `& y5 ?6 L/ I' L; L4 j' u& D- t& K
let new 0
* B/ m7 O' V: r; S; g, G; @9 J;;
暂存新的一个全局声誉, D& c7 `/ h) N. j9 H; e
let i 0' [6 [1 |! m6 Z: q$ o
let sum-money 0
% c( A  W* ^8 x/ l) m% g6 e" O0 Flet credibility-money 0" p- {+ p, M! K# {) H( B" V! Q
while [i < people]
! v' s( `7 T6 V[' x4 A' ^9 b8 b/ |
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' ?" r0 O* A8 m2 t/ ]set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): `/ F3 _8 t2 O6 M, m' g4 T
set i (i + 1)
( d( y. I3 D! g+ L( h2 e; f]; r2 E- Y- p! r. q: n  }0 d
let k 0
4 Y/ x; h2 Q2 B0 `' d, Jlet new1 0
3 g5 e* N# [+ R% B, Kwhile [k < people]# T1 S; w, w# j8 g, d+ n
[
. ^+ K8 F% P- k, t* b* |8 }/ D4 U, B! ]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)) |! j2 _+ n$ X3 w1 x2 {- b
set k (k + 1)
0 X5 F" _( d8 p6 N]1 f# r) Q4 q4 Z) l3 L$ ^
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 J2 s  g( U( v) O0 I- Q0 Yset global-reputation-list (replace-item j global-reputation-list new)% P$ J# V- C  S2 F8 l! Q
set j (j + 1)
6 |& d2 ~  u7 @) m# b]
5 N- [( c9 K4 D1 |end6 `# h& N  ~. O" ]0 F

$ H6 c+ U, h0 Q& P& r' O; r; g! b+ z8 f4 W7 r2 T+ ]- m

& D8 Y; Z$ t( v( Xto get-color
6 v: e1 X3 C. N# j8 G' m! S; m5 Y0 [8 }
set color blue

% L/ ]' H# M' W9 |* ?8 F# s- O" Bend+ a2 S4 p8 |: w2 l) m0 @

0 \2 I  V  l& P5 N* R& h$ S0 [" qto poll-class: K) I& ^& ~  K8 v
end
9 N* p4 q% {" J' X' {
, n" U/ s5 _! dto setup-plot1# a& k) G& \: d
/ c1 L# l2 D. c' M
set-current-plot "Trends-of-Local-reputation"

' j" J, |; B3 q% Y1 V
  j) j# y9 j9 z" Mset-plot-x-range 0 xmax

& z: c6 W! i( n( R( C
. O" {2 b8 Y" v' Kset-plot-y-range 0.0 ymax
9 h4 _- E6 K) i
end
# W$ G. X' ^. w3 O' n4 M
1 d8 p% w  h: q9 L* oto setup-plot25 a; h, E% J1 b  w2 S9 d
2 J4 f+ g8 `) e% y- r
set-current-plot "Trends-of-global-reputation"
1 d* J, h$ t: D3 P, L3 K3 c
& s5 A1 B0 t3 x# K& ~
set-plot-x-range 0 xmax
2 W0 M3 v3 Q4 @" m) b- b+ _8 X
4 m8 S/ ~9 Z0 w0 t: {2 H6 A" o
set-plot-y-range 0.0 ymax

' P' d: K+ A7 Oend: N: V% {1 d: n# h! E- w

! h6 p' g) {1 m6 z8 b# u% ^to setup-plot3
; C$ D0 _) k4 U) q: t  c/ Z7 `' w; g3 X# c8 q
set-current-plot "Trends-of-credibility"

! F; c8 \2 l2 g5 W2 E- R' K2 {) v1 q3 D/ K, c, y' ?: l% c6 `: I
set-plot-x-range 0 xmax
' B. q6 `$ x: u
2 ]2 A: A. X  c, c) J
set-plot-y-range 0.0 ymax

8 }- k! w+ t" Q5 s: }8 P  bend) S2 a; [6 s9 y' G+ \; T7 {' ^
% \/ c/ S/ K+ K7 C2 ]7 o# K: P8 u
to do-plots
3 v) p, {# z' i$ [8 ?5 yset-current-plot "Trends-of-Local-reputation"
! F8 y) \# j% J8 s' V2 F* r2 [set-current-plot-pen "Honest service"
9 i% J/ V  `- V1 i/ Jend$ r# k5 W( }1 a# m- p" k" g

  `  Z  Q4 E: 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.
+ I; n" r( |9 M. r
' [6 t# O+ C' X$ `; g  b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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