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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:
" g* T6 b4 c: c) i3 Y+ O2 ato do-business
) b4 N& g$ y( k rt random 360) C! h- h; L7 F* n% {
fd 1' c3 y$ c* |$ `+ r& b
ifelse(other turtles-here != nobody)[
( E: l3 c: G: w% w  s! a& Y   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.( B* B! z) k7 s! I3 H
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 M; d( v: I) N0 m" g0 s   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# N$ ~2 J  Y: j) L9 F
   set [trade-record-one-len] of self length [trade-record-one] of self5 w1 d( I$ X* Q1 N
   set trade-record-current( list (timer) (random money-upper-limit))
* i/ Q. Y3 M+ [" ?  d. w" r" T! U
* w. v; u& I* c! k+ b6 _问题的提示如下:
) b6 m$ R; W! K% ~  W; S: ^" J4 d! V3 M+ |* X
error while turtle 50 running OF in procedure DO-BUSINESS
, h1 w  R/ ~0 p! s3 Q( W$ Q/ g  called by procedure GO
3 y8 x$ ^2 l& g' A9 T/ aOF expected input to be a turtle agentset or turtle but got NOBODY instead.
' e3 Y1 u6 E, B2 k* N3 H
(halted running of go)3 ~5 e/ j) O% s- M  \
/ C" k8 f$ W) p4 j; @. {9 M
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~~
4 m' A2 i; h. {& v: s6 y' ^, F9 g4 R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& i5 B5 r% _6 m0 p" }: M3 R4 |: l
globals[& j( \& a3 o$ w' {4 s* ^
xmax4 [0 R9 S4 M& r5 f3 \
ymax8 L% p+ Z# f( n' G
global-reputation-list4 I! X- q# q8 j, \/ f- \
( r# O& X. T% ]0 y; x1 V/ m, s
;;
每一个turtle的全局声誉都存在此LIST# G/ b  ~8 a+ X9 S2 O: h+ G
credibility-list
; P( ?/ i& L; Q0 v7 J;;
每一个turtle的评价可信度
- |, \! z5 v" x/ S9 O2 }: r; P/ J* `honest-service
. G2 p$ @2 C5 iunhonest-service
7 X) g( T2 i! H5 E: q% m) x/ D( s! xoscillation
6 v" I7 `2 X' S' [1 Rrand-dynamic2 L  I% |  z* W$ b/ N! S
]
3 ?5 D' O$ y9 `& W+ T. V& U) `+ U7 a0 D) `0 u
turtles-own[- N8 D# Y0 P* k, K$ l% }
trade-record-all
9 ?: x) C$ ^2 Y. Y( H0 A;;a list of lists,
trade-record-one组成- L; A' v2 R6 k; N4 j# r% m6 p
trade-record-one
; W5 _9 C3 e4 M- K$ t;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 f3 |; t0 k) ~

" C4 e5 t9 I& `8 E" m/ L# _6 J;;[
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]]
* S. ^% s* U9 e' |# ]" xtrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
1 S3 h8 k# l: Q* Ecredibility-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
1 ]7 M/ J: O/ U3 o% Y" w' m) ?neighbor-total7 O+ Q( E$ x9 p0 E8 O. T) `
;;
记录该turtle的邻居节点的数目
0 o! x$ C( E! ftrade-time3 A0 A4 y& h0 s8 u( H' w$ L
;;
当前发生交易的turtle的交易时间
7 F6 U0 L4 }, Bappraise-give9 V5 D, y, L- V5 Q/ k& W' i
;;
当前发生交易时给出的评价
- F" T: r, z  H7 u% G4 r7 Cappraise-receive
$ b( C. ^$ `9 p5 |' d. Q% P3 M;;
当前发生交易时收到的评价, A0 ?# g9 B1 g+ F9 K% T
appraise-time* @/ C) e+ e( v5 n
;;
当前发生交易时的评价时间
; y- j/ R5 p, `6 v) }& q$ u0 u& vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉: j4 q7 \; I3 j) b& `, Q. G  i
trade-times-total' B1 ^( e/ {+ R& q
;;
与当前turtle的交易总次数( I- _( t- z. D& P4 l
trade-money-total1 E7 f: i9 @+ U2 J1 e! Z
;;
与当前turtle的交易总金额% y3 e2 v, |( ?, ~* O. I* T/ O
local-reputation
% f" t/ D+ C" jglobal-reputation
2 W" e6 K4 u% z9 X) Acredibility
/ }5 q; j: p0 D; G;;
评价可信度,每次交易后都需要更新! I: e; q& o% a
credibility-all
" n+ a3 j& }+ O. r, Z;;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
% f- v) ~9 ~: z' _
( K* _) c" [/ Y8 ^7 K' \, I4 v;;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* N- }+ w+ W3 Y& F: T# C
credibility-one
9 k6 {4 G) w% W1 T, Z3 n5 c( X;;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! \" ]+ c7 L- B9 R
global-proportion2 I5 ]- r' Z2 P% T
customer
1 B( n4 x8 p4 E' p, S5 {customer-no& u" [- X5 A- ^4 J/ S! d! }# P: w
trust-ok
* a0 R4 R8 z* M2 C! ttrade-record-one-len;;trade-record-one的长度/ h" f' @; u$ I  v* x. z
]  ?! ?+ J$ F' @( G( h( R
! H; ?& Q% n! Z6 @$ H
;;setup procedure
5 \+ T) n% V$ @' g
7 K: @; m8 |' }7 N+ bto setup; R0 a  [% u$ {7 k0 {# b2 ^0 |

0 v$ k' F/ _  j3 ~5 Aca

( I2 N4 @$ z! V. x& N; k5 r, f) W1 y, x/ \' d2 t( a
initialize-settings

4 [+ |( i( M  U/ d
8 j( {5 V1 j* {: B$ ycrt people [setup-turtles]

9 w* A& k7 d# Z; ]7 \& O; A! O; }% p% T" Y
reset-timer
+ E' b$ ]* C) {1 x" @8 f
5 V( c  a+ C8 {4 {- j
poll-class

7 A4 M' S3 }* \8 @7 @- u  m( l! m- @+ r
setup-plots

) X/ s. N' R% X5 f
' I, d/ ~$ t" S( y) h$ d5 l+ Udo-plots
  h2 c1 H+ n* X5 r( b
end
& D2 e3 r. m1 _3 y* }: M, ^) w. a/ o' K5 e+ C2 L1 a
to initialize-settings
- w' J4 x* S( b; c# J$ ]5 V# `/ M  L( Z
set global-reputation-list []

8 `" s5 ?4 _/ w6 ^  w" Y" k: B* {9 S! W! C, k1 s2 ]
set credibility-list n-values people [0.5]

( I( ^* M' {0 q! P( Y6 K# N1 W/ Y* V& C! Q
set honest-service 0
* R8 f0 s+ S, N, g' L

/ x* X* R* F/ m* h5 C- Jset unhonest-service 0

" ]1 P% z2 y4 J) i) m9 E: Y
) r* i: K2 d- |$ e' _set oscillation 0
1 V8 W, A8 c) o) D2 g0 q
1 W2 X. w# G, y) M4 Y- @7 h' g; H
set rand-dynamic 0

, u6 N4 z5 l- _8 J* X/ n% tend
# f  `9 z3 n6 j3 C+ Z. L8 C& p
1 t' B5 I$ y' i) b, }to setup-turtles
& n! ?) h+ Y& Z! uset shape "person") z5 i, ^' i% ~, W$ _
setxy random-xcor random-ycor
3 f/ m8 I+ I  j6 Cset trade-record-one []! x: E- f3 Q' ~6 a7 o. Q8 y

8 w0 K1 m3 }8 ^" Z7 c3 Eset trade-record-all n-values people [(list (? + 1) 0 0)] + V' n, V1 V/ P3 s- ~  l

: ?$ f0 q" ?: `! }) y  ~5 Hset trade-record-current []
/ C* d. ~  v0 Gset credibility-receive []0 @# @7 N+ o6 \4 X3 e  d# S" J" e3 o
set local-reputation 0.5
/ j8 k7 q# _7 v: e5 n' M* Pset neighbor-total 0
- u$ w$ a- W2 aset trade-times-total 0- z# {! c3 K# H8 M. z+ @3 |" d/ R  d
set trade-money-total 0) V" |: g1 t- I7 i3 z
set customer nobody
% B. o3 X# w- ]& o1 q8 sset credibility-all n-values people [creat-credibility]& Z* ^( w! ?+ @: J" L) _4 ?
set credibility n-values people [-1]! A" b/ N; Y- w6 o" k3 N
get-color
# f: O% C# o" @: a- `8 f

1 o1 i" f/ z" b' |end
% h3 n- K7 z. \( g
2 w/ W, [# u2 q8 Q* G  I( t( @to-report creat-credibility( ]! |$ W! \$ R  k6 [
report n-values people [0.5]3 T% {- n0 A4 N6 o1 W+ F7 p
end% y5 O7 B, E: p
1 F. z+ X1 O: @
to setup-plots; u) [/ p) b8 a9 z$ j: k3 w
- u1 J6 l6 h7 k* I* ?" P! `7 h3 N0 q$ }
set xmax 30
3 J/ E3 h) ^# I' ?2 B

9 n; R+ r$ {3 ^: Dset ymax 1.0

& v6 r; o& V& o7 j8 ^& d3 r9 c! D% P9 D1 y
clear-all-plots

: Q9 a0 c7 I! U9 o* b9 c  H0 x! \5 Q' d. f1 i
setup-plot1
3 \, N! J; ]7 c1 {" e

: y6 i9 ~- r$ a% E& N3 Y: zsetup-plot2
, j% E) b+ j- C' s+ w8 \0 H

3 w5 ?# C, W6 O* Z. }' D6 i3 dsetup-plot3

/ a2 X  _; E* E/ l' J* c0 nend9 u( j( E2 v4 F: o1 _# M" c+ D+ y
2 j6 d: v7 Z' i' F; g0 f% X2 u
;;run time procedures
0 a' ^3 J. e: _
6 G) V  ?/ y7 K+ t) g1 Vto go" F1 m& o" T' D$ D4 @' K2 G/ I9 K
5 }: W1 ?; C9 L( V) c, `6 w
ask turtles [do-business]
' m& o* I2 L( z( t
end
7 [) C9 s: K0 G' A1 _: K9 _" e6 Y. n9 H, h5 t: P8 [( L: Y' ~
to do-business 9 \$ S! q( ]5 y9 M

; E2 H7 z. e$ e' O  v3 b5 k- i2 m' ~
rt random 360
, w, H9 b6 S' @4 c( A9 {

/ w( C! @/ \0 `+ y- k0 B2 J9 G; {9 e% Afd 1

; n* p/ m9 g/ v& R
! J8 J9 w' M' M5 y/ uifelse(other turtles-here != nobody)[

% o; i: G7 z. ~" u+ k2 \  I* X, {4 F3 x! q6 m, \' Z' m
set customer one-of other turtles-here
% j$ a3 t, m: _( Y. M/ j$ q
- y4 F% z" M' i
;; set [customer] of customer myself

. J/ n/ p) y0 o5 }1 o7 w
1 M- n" t9 y  l1 kset [trade-record-one] of self item (([who] of customer) - 1)
# n& N+ k* h# f2 R[trade-record-all]of self5 u6 `( g- |7 [! {
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 {% ^0 S  [2 V7 d9 {$ t6 c. N6 \* y0 G* p% o
set [trade-record-one] of customer item (([who] of self) - 1). K0 q- f3 y! c
[trade-record-all]of customer

% Z0 I6 w+ E5 `! c4 o8 a5 J4 _# N- ^3 C+ z. j; M) f+ K3 @
set [trade-record-one-len] of self length [trade-record-one] of self
- F/ _  ^3 q2 e# N; ~% K/ t

" I0 L# H2 W$ mset trade-record-current( list (timer) (random money-upper-limit))

5 n& a' P7 Y/ e. G# a$ k  K( k  \+ }6 u2 O
ask self [do-trust]) Z' X6 T* G0 U$ ^
;;
先求ij的信任度" N( L' w; r7 [4 {

) H" k/ ?9 l# p# Z1 R5 j: ~if ([trust-ok] of self)
, d( Y/ W6 B6 X;;
根据ij的信任度来决定是否与j进行交易[
$ p# ]/ u/ p9 Y( w: ^1 x5 {% q2 Q- Wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ }8 d/ X8 T, T5 Q+ S+ Q( D7 W2 c6 J7 a
[

/ Q) P7 q' U9 ]: p' s- S3 w+ v  e! B3 X
do-trade

  a* K0 [# f" J9 o6 `, K# z
3 {# n6 `8 Y1 f6 X% xupdate-credibility-ijl

% @; I7 Z/ Z* M$ C& t" q# J6 L
' M$ p6 o' f8 i1 E8 dupdate-credibility-list/ I" Q* P* F; x5 r& Y: n/ ~3 k7 Z+ L

" _' D, Q0 ]( e+ v8 a$ w8 f5 ~, r4 Y" [
update-global-reputation-list

" B  a( a) S$ m3 A2 z- c8 H$ S1 F% A' _8 _/ p
poll-class
. a! a1 c7 ~: ~; g5 l7 n( t

2 J4 L/ n' d9 z8 u. N5 h0 r. Aget-color
+ R! L$ A& f4 }; {! T' M
8 t$ M5 Q6 d1 K+ p9 r: s4 S
]]/ x: U% Y3 \. J: c3 D! U9 x2 @

. G% r0 i) B& q% w9 h% |$ Z;;
如果所得的信任度满足条件,则进行交易7 @6 ?7 I( z& }/ K- w; o* C/ j

5 U; C6 E+ f0 F% N( M7 ?# f. a[

2 `  t7 c* R9 @5 [" `9 r
& D, ?5 _$ E% brt random 360

( W. u& B& c+ u
: M" Q+ R) x/ e* q4 U+ ^( l4 Cfd 1
$ F1 R  I: O3 y
5 x3 w6 u% \$ X/ t. l. U$ y
]

! `+ m* U" a7 h# a
. M4 M+ O, I0 T( R% Qend

: X8 a# g* a) o. B
3 T/ n4 q$ K$ H- v; M, S1 ?to do-trust $ i2 o1 q* [- W4 p+ R
set trust-ok False
8 ?7 `5 F7 ?. @
- D+ A3 \! l3 w

& a2 u2 J) X' N! d9 j& ]& E4 Tlet max-trade-times 0
' n# n2 y' m! hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- P& I5 t* z7 z$ f3 \
let max-trade-money 0+ e: ~: p2 o3 J7 L" S! h# \# e
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ X, h# u- U. p- G2 A5 J6 n/ Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* A9 [( a+ D! {  t2 I3 u4 N! U, h  b4 e

% ]9 c/ H3 G' |& j: U) U6 Gget-global-proportion
: h# x9 i; U; Q% u: _/ F1 p& ^let trust-value5 {) A7 E1 n& Y
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)
, O1 N" X( _+ G# ~/ J- I5 M  m
if(trust-value > trade-trust-value)
/ \/ y8 J, e! o8 S' I0 @[set trust-ok true]
$ X  \0 x' O; H' Q% _5 pend
6 n, w" Q$ ~. w) s& S$ o
2 \- G2 I& w$ v6 G6 cto get-global-proportion
0 w& ]8 r, Y7 ?8 d/ J9 |5 ~8 Kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! b, f: C& @. P1 D* G
[set global-proportion 0]
- f7 ]. m' X/ u9 i* p: {/ g[let i 0
2 N9 L  D/ i( klet sum-money 00 T: B7 u# f. ?* |- _! L- D! V
while[ i < people]
1 i: v  S; |( |5 s: r4 b[
. b$ g5 ~0 i% |5 n3 {if( length (item i
  y  I. K- ?8 E. L[trade-record-all] of customer) > 3 )
' Q6 b, D3 n: J) J! G
[% z4 M; Z- M3 B1 T8 [
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 L2 w6 T6 o1 i9 p. w
]3 \7 c3 ?; A# _1 }. B" U9 u
]
+ z6 l$ \% O4 k- W! plet j 0
" P2 G$ H, b: j% b* `1 w0 I; n2 mlet note 0
8 d- K2 F% o' L# rwhile[ j < people]' l' Z9 `# P5 O
[
( t* T9 ]8 ?& ~- Oif( length (item i
1 `; q6 R& R, g& C/ q[trade-record-all] of customer) > 3 )
% m7 o* M3 F2 _5 k$ d# V
[
  E- w, u# w- S6 n7 y2 m/ ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ }6 J0 ^, U& S1 P) j- X/ Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 h- G. G3 C- `[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ y8 b" \( Y. k% T! i1 {8 j" r]
9 F  H; J2 k* ^1 \1 }! A" Q]
6 w' k2 X' u6 o+ X. Dset global-proportion note
: M1 C# H$ J6 B: q) L]
" y$ V& O9 K" }, m+ Bend
' r( S" e% Y8 G( I1 I+ a: k! J
$ S  Z- j2 l7 W# Q1 W& Fto do-trade
5 Z% m# Y6 I$ ^) `9 M;;
这个过程实际上是给双方作出评价的过程
& V1 o& t# Y: a( Z8 H; `- q- hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* l- x1 @! r& j& u( fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 L( ^' ~. U+ B1 u8 pset trade-record-current lput(timer) trade-record-current* @& H. V- U9 T5 R
;;
评价时间- X; C( M9 ^# e% d: e; n2 ~
ask myself [6 H; P% j% ]9 l0 d
update-local-reputation
. V$ y# ~$ |. ]! g: @2 qset trade-record-current lput([local-reputation] of myself) trade-record-current( ^" i& x" W: Q. g
]
" h: K( R9 U! f% Y) nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 d$ {. t, b/ ^( j! |0 Q! h
;;
将此次交易的记录加入到trade-record-one
9 H8 ?1 F6 }( E, ~# L0 I5 I; {& hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 q0 O) F* a0 |
let note (item 2 trade-record-current )& X  g  o: s" r& Y/ f$ |' y% V
set trade-record-current
0 l$ @! e$ ]8 w3 U, I" W(replace-item 2 trade-record-current (item 3 trade-record-current))
6 l) x" F# r. c
set trade-record-current
1 u. ^0 b! n4 V) r" M0 v9 v(replace-item 3 trade-record-current note)3 b. B: w, F; {" l0 f
0 q2 f7 f4 k# q. v

5 {- U. U8 z! ^# j3 \ask customer [
8 a+ O- G# [9 y1 \* v$ H5 }& ]1 Aupdate-local-reputation$ q. @6 R* ?9 ^" C0 {$ ]) {
set trade-record-current0 R0 _% D. U0 d& r4 L6 S6 ?5 B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, C$ V# Y4 A! c1 h9 ~]
2 c3 d5 D" b, J6 v, e0 ~. J& _1 `. R" q3 V4 d% z7 M

2 l1 @2 E$ C7 j  }* _4 R: G2 _8 sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 Z. L; m2 ]7 t: l
9 H7 k  e% l9 i7 p4 [) k' C
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 Z4 M2 c! Q5 y5 @! }- t;;
将此次交易的记录加入到customertrade-record-all+ c+ T% {2 Z' O. Q9 C, X# j2 x9 U# Q
end
& p) _9 y) Y! A( S2 `2 X/ j/ x' {2 u0 E; h
to update-local-reputation
9 J# N; k8 L# m$ i6 z  c) }- T* }set [trade-record-one-len] of myself length [trade-record-one] of myself7 |1 ~* _2 @- f

; \- p' C; I8 D* k) m. `: Z5 J( z- P) t
;;if [trade-record-one-len] of myself > 3

+ W" p; q2 L( I" D/ L# }9 \$ Vupdate-neighbor-total# v. y8 q, t' k$ n2 f
;;
更新邻居节点的数目,在此进行& V4 `) @* X/ ~. j' Z) T
let i 3: i( x2 E" O" I* E0 R/ g3 }
let sum-time 0
4 J% }5 H( Z0 R* K; H2 kwhile[i < [trade-record-one-len] of myself]
/ z+ o9 G. ^  h6 z[
6 n& E8 a" a6 E( A) t/ m, [set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 c( Z0 G5 Z. `) D. S
set i4 s0 {; [) v( K* ]7 ]7 t( \
( i + 1)

  ?# k: {! y% b9 i]1 U; j2 h3 y; m* `& s; N
let j 3, z0 u8 q9 n  p: l: N! Z$ r
let sum-money 0
( ]" \6 x: ], Z% v" kwhile[j < [trade-record-one-len] of myself]
0 y4 I" p# T# T# y[" Y7 j% X4 [8 ]) p: x  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)4 H& o( L) ^+ W/ d* R- ^% }' C* z
set j! H% N! k0 Z) i9 u! s
( j + 1)
: W. c9 q5 t8 q
]
$ h& p& Q) X' E2 zlet k 3; }# V/ {: l  l& g
let power 0
5 E/ @+ N% d4 w2 [; L/ v# \let local 0
# f6 B; e5 l, o8 ?3 @9 _while [k <[trade-record-one-len] of myself]) S8 ^  R$ J7 l& f) [( [
[
3 C3 G2 n7 n+ |4 t7 \( i, [0 Y' y' Q/ Gset 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)
: Z6 V8 I: Z) e6 p; ]$ a% {set k (k + 1)1 L' J. q1 ?6 q  k& D
]
6 v$ \9 z$ c% t* c( k6 {set [local-reputation] of myself (local)* e6 M2 r" R7 d/ F
end0 R7 r" F9 O) U( n6 v
8 j& l9 `1 v2 j0 u3 x' Y2 R
to update-neighbor-total
0 r( x" Z( L) N5 e3 t5 C" a
3 \0 l$ e2 a* ?4 E8 fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 y* a' w7 d( J! e3 w& X* b" r

, o9 @  w2 @" t$ Q* [1 K4 }; B
" R! h* A' D% R! v
end9 V* I+ X! M& X- B, k: A
  }7 k8 Z4 P8 l7 e: \
to update-credibility-ijl ' x6 J* ~7 z/ c4 U
# a2 T* ^3 Q8 R
;;
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。
- z+ [) \. `. ylet l 05 E  Z, r( B! S0 ^" R) v/ `' m
while[ l < people ]
% D0 ?# Q: m5 w, E' u1 ^. g+ h;;
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  ]" x6 N  q. u# V" [1 Y
[
8 K6 U, i" |0 j# ]+ J1 qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 w4 f. \) o# q! i% o
if (trade-record-one-j-l-len > 3)
7 D/ q" A  M, U- k. ]* s5 |: J3 N' Z[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
, l1 h5 x$ x- t9 ~" \6 Blet i 3/ J& {9 F& \$ _1 N! ]' B+ Y/ v
let sum-time 0' R& l9 _6 l% N9 B' a
while[i < trade-record-one-len]
$ C1 Y" m) Y/ {: I$ f; {! L6 ][
5 Q: M" q1 `6 i' j( P# x" Tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* b/ n: D. x0 ]set i
! S7 j* N2 O, H% l( g. R3 k* l( i + 1)

: B6 X% G, f* F7 X) Y9 ~]* i8 [7 @+ D9 J6 T6 X: c( t
let credibility-i-j-l 0  A# S: c3 w$ f: a& ?+ H
;;i
评价(jjl的评价)
' L8 v# n8 W. ~$ q' A8 dlet j 3; F6 e4 D* v( w; Y. ~9 I5 V* K
let k 4
' c; ]9 z" s2 G/ F% |- Xwhile[j < trade-record-one-len]
) t) Z$ L4 K# R& L; _) j( q: u9 s[
5 ^' G& j3 G6 ], _( B' c( Hwhile [((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6 t  `' l/ h, Y
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)0 ^3 `& |- o1 V! O6 W$ C
set j
  P* w) V: F1 }; g% j( j + 1)
% x: w$ ~! _( Q$ c4 H
]1 p* t( L/ X# k" M1 o/ s8 b
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 ))
6 }' e/ z; G- A2 X; L6 o9 y. x! z. C. A9 Z

  k) x9 @; S* G; ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# ], L0 X' h0 a9 t) F; C/ `
;;
及时更新il的评价质量的评价2 K# O, Y$ c3 s8 u7 ]5 Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( p9 Y2 p- v1 d$ Q$ P2 D+ f/ [4 Sset l (l + 1)8 \) x5 ?; {% g  W; S' t
]: o$ u- B" _/ R7 _! ]. `8 u
end
4 q; y4 ?: x( s0 n9 O0 u2 [
' a6 n( G) U+ hto update-credibility-list$ B8 P$ h( N  `& v% e
let i 0: x$ x: v" R2 r! E. O+ W6 V. }
while[i < people]+ f6 }! [$ M; m/ ?
[
# M5 ]* S% h$ k! R; Alet j 06 c3 u8 G  W: X, y/ h
let note 0
2 O; c& {. p* m' ^let k 0# `* E# n2 }$ m) t+ }. A2 n
;;
计作出过评价的邻居节点的数目
8 V" M1 z  q. F1 cwhile[j < people]
5 d1 c& Y" C! j- O[, G/ x& s- n$ q4 g+ `  M6 P
if (item j( [credibility] of turtle (i + 1)) != -1)- x& a4 U  r  t" p
;;
判断是否给本turtle的评价质量做出过评价的节点  h  ~6 @+ `  Z# z( o; S: |
[set note (note + item j ([credibility]of turtle (i + 1)))
) p  ?) a9 u3 [  p* P;;*(exp (-(people - 2)))/(people - 2))]
* g* B' Q% G* n2 u% o) q# U0 q8 z
set k (k + 1)
( J7 T9 T  r3 w! w9 D5 G]0 r' `& h& t, `/ \& N
set j (j + 1)% g6 {) @2 ~6 m8 Y$ H1 Y
]
% m2 E: E, c) E! z/ K5 bset note (note *(exp (- (1 / k)))/ k)
- i0 Q( L% D6 Q& L4 \- Fset credibility-list (replace-item i credibility-list note)
. k6 o$ E4 O/ y8 `. Jset i (i + 1)4 ~# R* F1 F) @/ Y. ^
]
* H$ W1 \% O7 tend7 V- m9 s% ^: W) g
4 Y% @% C3 d5 x" p- P- J2 c5 f. t+ j- t
to update-global-reputation-list- {( p% _/ S4 b: H0 |8 h9 i+ L
let j 0
) F. H" y1 \$ o: b5 H# F3 [( |9 V9 b; {while[j < people]9 K1 m8 O9 g  o2 C- p/ B
[
: \4 I0 c) f1 _let new 0! K2 r0 ~& a9 `$ I& q! a. {1 u
;;
暂存新的一个全局声誉
3 d7 |+ i/ |& A4 j- Dlet i 0
4 j' q# b0 W% v1 q0 X3 t/ q* s- ^let sum-money 07 C& i9 _4 d# ~2 Z
let credibility-money 0
2 _/ l. g6 m/ G2 G2 Q( ~4 n: Cwhile [i < people]
; `& m, c$ ~0 U- j8 k3 Z8 Z[
# e  B; l9 a+ l  wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" s4 y& l& M4 L( R2 Tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 `8 j; j: ?# {3 L  D
set i (i + 1)
- {& P5 `6 N9 Y6 e. J, Z+ g% c]
" O2 z& E$ I$ d* A2 t' s) |let k 0- Z" A9 }5 p: ~2 V/ |! @3 u
let new1 0
2 e. S: {6 y& ~while [k < people]
2 }' L# D. I0 M3 \. V+ P( f0 R[
- Z4 ]" k+ t3 d3 l0 V. t7 V  Pset 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)
9 q  E# T9 {3 C! M; ]+ s: e) D. bset k (k + 1)
: w3 y  T/ q" l. ]- x]
) T% @) C' J& `, O8 `+ i+ Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  D7 E( t$ `  e9 d; |set global-reputation-list (replace-item j global-reputation-list new)
+ ^' R( U* N6 k; D) x; O4 {0 U. Kset j (j + 1)% V& F% K- d$ m, \: G5 u1 }2 d% w
]$ \0 @: o, }4 n7 w; d( u, \  k) `
end
3 j+ Q: v7 T7 E7 t
3 {4 E- {1 k% F' I# h6 ^9 ~0 G
, D' t, W) Z* n$ X% j
/ t' N, x4 |/ N8 X2 Nto get-color8 M$ Q8 V3 q9 r2 i. K0 D$ V8 x

! ?2 m* k. ?; B, J; pset color blue
9 H  h- I; m$ P1 K8 ]9 b
end
7 J+ T; Q0 {7 f/ c: X$ z- \4 [8 R# {4 u
to poll-class  X: z% @7 G9 R: V
end9 H$ x, A7 W& ]- U$ o7 B+ z9 ?

( I7 L1 s/ r( wto setup-plot1
, o" m; j1 M- _3 B8 Z, A
& H7 u$ S7 o5 {, h8 ~) {set-current-plot "Trends-of-Local-reputation"
( B. g5 k+ Q3 C, k0 ^
+ k. M- f" C( E# z) q4 T! \
set-plot-x-range 0 xmax
* K  R6 c- K! r3 R# v( h/ `

- W7 F5 h5 a4 m6 n( f( D- eset-plot-y-range 0.0 ymax
6 v6 W7 j) I  x8 w) N* i/ L
end7 f' l1 W$ U+ [: X0 W9 k
2 \9 ~( \2 w( t8 S! J4 S/ M+ f- \+ m  }; h
to setup-plot2* f# L" X: p5 ~- [- I
, e2 Z9 o& [4 B8 O/ E( J# h
set-current-plot "Trends-of-global-reputation"

7 x' N+ s3 `& J9 I9 [+ T, U
) U; u9 g, F0 R8 h! J( nset-plot-x-range 0 xmax

$ ^" ^" x5 Z4 e' S
' ?: y- h8 V6 F) \9 j1 U; mset-plot-y-range 0.0 ymax

+ w9 _3 E0 A1 F6 o6 Z% Y3 hend& B' P: @8 J# H! C8 o
3 [- D1 u5 m) a7 b
to setup-plot3
' q+ r/ n9 _/ T  Z2 {9 s) s
  I. c) j7 A9 |& c! kset-current-plot "Trends-of-credibility"
1 V6 V0 w- \3 l* c  L5 ~) a9 q
' L# ~% \  V  q' k/ v
set-plot-x-range 0 xmax
1 N7 @# G& t- ]0 l/ {% S( O5 W

; _7 r/ T* O! j: ?set-plot-y-range 0.0 ymax

3 a0 n3 s& T/ z# j) H: `end8 k: J2 q) W9 L# ?2 Q

6 U0 ^1 {' q6 b0 d7 i/ e$ k0 l1 lto do-plots) C7 z: F  g# j* A2 l. F
set-current-plot "Trends-of-Local-reputation". E: L3 ^, W$ |' ~
set-current-plot-pen "Honest service"7 C: w' L, H1 z" h  D
end
& N( N) i$ ~& v3 ~1 ]: I1 V! @" v; ~: M5 I4 ?0 w9 ^7 {' a4 V2 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.
* Q7 f/ P$ f, Q: Q/ G1 Z; P. h$ S7 \# S3 ?% }: Q& j
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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