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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:% v0 F) u/ Q( N9 ^4 F
to do-business
5 E% U8 ~5 p% Q; x" W5 A  ^2 g% k rt random 360' |! @. r( e$ f
fd 1
: ^8 f* u+ D0 i' ? ifelse(other turtles-here != nobody)[
/ H, T' W  S5 |1 @) 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.9 @- x+ l' y3 c) p* B) a0 H
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* W3 l5 F9 s6 C# n   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ S0 O* v+ w; \3 `" u3 K: H2 ^   set [trade-record-one-len] of self length [trade-record-one] of self
/ c% x4 |& v; w   set trade-record-current( list (timer) (random money-upper-limit))
% t' d1 z& v: S$ j6 f, X4 D) t2 g' \  X+ ~
问题的提示如下:- q( y* @' E+ U+ f3 ~
: C' u: R+ o! ~- b+ `% g
error while turtle 50 running OF in procedure DO-BUSINESS# C1 p" Y  n1 U& |5 S
  called by procedure GO
2 x3 K6 z( |5 ]- O0 b. hOF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ J8 ~5 O. L& }
(halted running of go)/ L" e& D3 p( S
/ K& n9 ]; I7 k! I4 b' H! G6 y6 X' ~
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~~
5 r" {. ?' j# d7 a; d4 n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7 G. N# Z2 I% g8 p6 M
globals[: F2 x0 }+ d5 a  W. f
xmax! Z6 a5 W& z# U; S! W
ymax
6 w5 m9 V) e4 jglobal-reputation-list# t. |/ e- }3 K( d+ y

3 n4 c' o  b0 B3 n/ c+ N+ L;;
每一个turtle的全局声誉都存在此LIST
* w4 P! @7 k: \) \, L$ y8 H; Rcredibility-list0 D/ c* l- K8 e$ z
;;
每一个turtle的评价可信度& z+ `$ F9 l) C
honest-service3 w$ b) N8 N. I: ~; ?- X$ {
unhonest-service3 m  y: e, W) f) J; t* y3 i
oscillation
4 d, T$ w7 t8 ^6 L+ t: G7 ~rand-dynamic
! |  V; T  Q/ @2 i0 J/ b]
+ F6 b1 o$ w. t: Y5 ]9 G5 ^8 f
5 M, l0 O8 G3 e" U6 E5 R, K( Uturtles-own[& Y4 Q& n2 S7 v9 L9 t$ |
trade-record-all8 ^/ e9 T* x% d& C; ~- N
;;a list of lists,
trade-record-one组成3 n7 F0 x1 D% z6 P
trade-record-one
0 q; O1 R4 K7 k) [4 G;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* p; B" ~9 ~2 ?; N. F8 T7 R' e9 e' v# T& @4 D
;;[
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]]1 L& N/ N6 q+ K! f' Q% }
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]) t1 L  O; E. E, j3 j* C# h
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
0 a* r0 {" y" Aneighbor-total
3 y. @. m, N8 r% w+ `1 Z+ f5 r;;
记录该turtle的邻居节点的数目% G9 ~9 n4 p% {' p5 h
trade-time
" H. b% N8 Q+ I$ p4 l( q2 S0 q;;
当前发生交易的turtle的交易时间2 R# Q4 o+ q4 l
appraise-give: v& ^4 s, ^: G; @0 b" R) m* }
;;
当前发生交易时给出的评价6 i: j4 c: {1 d7 }  S
appraise-receive: c6 H/ @( ~& q+ w6 X4 v( b
;;
当前发生交易时收到的评价' d0 {  L5 [) Y/ m, O- [( r" q1 ?  \6 O
appraise-time& C% w9 F5 n" G) Z- c2 ^
;;
当前发生交易时的评价时间& |$ G9 ^1 D6 f: f
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 I$ @2 r1 o' N6 z% vtrade-times-total) e/ J3 W7 A+ S6 ]2 o2 T6 \
;;
与当前turtle的交易总次数8 r& F2 M* S9 @* k
trade-money-total
2 k  F+ G2 h4 @) ?; f: {;;
与当前turtle的交易总金额5 H8 R1 m' S. t- r
local-reputation
: n9 v2 ^4 V+ {, L. Uglobal-reputation
& V$ M6 l$ d- Z8 {7 `/ Bcredibility* I) N8 B1 {$ _' ]  [$ e
;;
评价可信度,每次交易后都需要更新/ z! z  l' `7 j$ S% y" Z9 G4 V
credibility-all- L1 u6 T9 ~2 _  E
;;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: M9 {, |# ^& o# v. L5 ^

5 f9 E. J% P0 f& f) u- R;;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0.53 h" U+ i7 x, U; ^2 K
credibility-one0 `- ]. W% x' M# ]+ q
;;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
/ w2 f, N+ l1 Z; ]. xglobal-proportion8 i" H6 q) ~0 L' D: W& g
customer
3 b8 B/ ^9 z2 x7 N! W9 o$ ~customer-no1 c- `4 D* R, @) r
trust-ok
/ \8 c$ b0 ^' S" n* Otrade-record-one-len;;trade-record-one的长度
0 E0 q* d% F  v/ d1 Z" Q. @3 P]
& b/ N2 F+ I8 i6 O+ d4 r
7 b; N- S& L0 }4 R! W;;setup procedure
. @' z/ V' v" e& n* j& C0 r2 M, C8 @
to setup) Q) m( C( H: I7 k  R$ ^, z

) {9 [7 T$ L# q! N5 h; ]ca

5 |8 w# ?0 x* d5 w* X. u, O
- c3 v+ d4 j9 e& J' e/ ]+ Cinitialize-settings
2 E$ F4 O+ q2 e# ^) z& X: f

9 X' c6 ]0 j, _, qcrt people [setup-turtles]
& ^+ N3 [3 |2 e+ ~

& K3 @4 C$ Z! areset-timer
4 L5 i/ D3 a: ?# j

5 z! v/ S& L: l' l5 W6 Rpoll-class
* c( m' Y# a7 a! h1 U
0 ~+ |& {/ r+ |+ `$ X, ^: B" s
setup-plots

0 G. H$ T) u; n, R* p2 z" R, x7 ]1 O$ n8 Q
do-plots

1 F7 D- {  S4 ^/ r, I- U( `end
) R7 q) O( Q7 x( C
% w; f2 I' N9 b# Nto initialize-settings
9 }& t, |6 c# M7 ]5 W! u2 Z
, Z  n% J2 O, t: c' }" d! uset global-reputation-list []

! K2 x# I$ K& i  v# o; O$ m  b& h* g' J
set credibility-list n-values people [0.5]

; B# \3 Y; i, x7 j2 z
  [& _' Z3 u+ N1 Hset honest-service 0
- o3 R# z/ h. w7 p0 [4 a# G" S# y* @

- _% D% f2 x6 g8 T  k& _( N; K5 a1 Nset unhonest-service 0

$ Z$ ^( l' B  i' l3 O/ h# I, {$ r' l' e0 m$ C
set oscillation 0
4 l9 ~5 ]. @* ]7 D# r2 _6 @

) M8 S3 p2 d: F8 J( {set rand-dynamic 0
) \5 {3 P  F0 E8 u/ s
end
3 ~$ ?+ ^( p9 ?5 H9 h9 F0 R$ M3 @( l6 K+ [6 I) ~. c
to setup-turtles
, `* [* u0 k. L" t2 J& G8 R+ }set shape "person"' b* j6 }! Z, ~& b6 D
setxy random-xcor random-ycor
) H: b1 [: C/ r1 Nset trade-record-one []
7 \' V( A# w7 [% B' }

' t' u& S% g& j' O! Sset trade-record-all n-values people [(list (? + 1) 0 0)] ! z" h5 Z5 C3 `9 j+ N

) [' O1 \4 |6 r7 Z7 P( E! t# hset trade-record-current []9 P; }: C1 o  [' w; b2 K
set credibility-receive []. A& A2 Y' n$ n
set local-reputation 0.5
! z5 X5 g2 D8 O" N* h' X* V3 Rset neighbor-total 0
# t. n3 i; C5 K& Z3 t, Y0 }set trade-times-total 0
7 f8 P* a9 i9 ^set trade-money-total 0
/ {# Z/ D/ Z: Pset customer nobody
- U. G  f' f2 I7 Xset credibility-all n-values people [creat-credibility]6 s" N/ |" B- ^: x* \+ s9 Q' V
set credibility n-values people [-1]
3 D9 C# r5 _) j, D0 g6 R0 vget-color1 z2 I9 k. b5 u

7 G( ?2 H" x$ e4 R* }7 Vend# t/ K7 l; S1 }3 R
% z- G3 ?) v7 F
to-report creat-credibility
; q# z! A% @% b4 T) u4 hreport n-values people [0.5]
4 |5 c. h( m: u; [6 F; x5 q6 F$ rend
+ j3 i, R3 C2 s% F. T- x$ w( Y
, [& z5 R' i7 r! Cto setup-plots+ a  z! ]. E) ?

$ d' |4 y# H  c1 t3 @set xmax 30

+ S* W( r" p9 q( @1 m8 L& e  ~% A+ k. P+ p0 u; m% U
set ymax 1.0

1 r9 n3 [; o) z% d$ {  @3 E4 Z; {! Y6 x) h6 R% C7 I
clear-all-plots
- l; }- d, f' z  }0 }  |. U

7 v& S. }5 X- K, h  G9 u( x8 l  p* isetup-plot1

" L% r* J/ J) {0 \3 _
% t4 W$ e8 {/ l) b7 q+ esetup-plot2
# c8 `! T% {2 }# n  u: `) h7 N

$ s6 c( d2 U5 B7 ~! Ysetup-plot3

, s( }& M6 L$ k0 oend  {8 l# l3 X2 H; \

' A( }3 [8 F* B( E;;run time procedures
6 g1 ?& y7 G% d% l
, q" X2 R( D5 eto go# {! w7 R; J( O1 {$ p4 p
7 r5 m% r' w5 y4 Q0 M& A3 l
ask turtles [do-business]
, D2 u* k6 ]$ R7 ]6 g  j8 a# o
end1 E* I$ f$ J9 t6 k$ a6 ^, f" U  C
; i8 p/ U5 @( f+ v4 B( `9 C  W
to do-business 9 W; J7 x  g& u+ ]& M* [3 C2 c

5 D7 y0 O. F3 ~/ n4 Z: p+ }  R" K! b, M& h2 e" X( J- m1 k3 n+ M
rt random 360

3 t+ }* Q. w2 C; G) y# c$ Y: T4 O8 r  `; o# }" {! [
fd 1

( b: G! `! ^3 k- d. u: M# H5 T, {, S: d6 i& ?& U$ H
ifelse(other turtles-here != nobody)[
% f4 V( j) u8 q; s# S; M3 w
& H+ ~* x  ^' P1 _7 k, K
set customer one-of other turtles-here
0 q2 R7 c5 m9 c) f  Z

3 j6 W# w5 s6 u. |. Z2 x/ z3 w: Y; ?- v;; set [customer] of customer myself

* @0 I9 ~  e! t7 v; Z& U7 W1 c
% L4 s2 q; ~7 R: b# q2 k* lset [trade-record-one] of self item (([who] of customer) - 1)
5 J1 T, m0 N2 U  i: s/ ^- {[trade-record-all]of self7 V, [7 S. X, o0 [
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ y) H* k9 F6 H, s3 ?; o  K

1 C1 D, a5 r( [set [trade-record-one] of customer item (([who] of self) - 1)' f" I( _! ?! C9 e5 m( \6 h& e+ k& j
[trade-record-all]of customer

. Q' W6 H! D! J! O
5 T. I1 i' e# ~1 ^7 v. k2 Oset [trade-record-one-len] of self length [trade-record-one] of self

9 @( i% J8 A, m9 S. `9 x; r* S8 N! Z2 \5 y# j& U9 r3 _
set trade-record-current( list (timer) (random money-upper-limit))

. y0 M: b, e  o  v, {/ q2 ?2 [
' \# k* ~! w" K- Z( F) Z1 Nask self [do-trust]
( Y8 ~/ U: ?- M- Q: @+ [8 Z& N;;
先求ij的信任度6 D7 b& H: Q3 \) E4 c

# f8 s: w* p" V' {+ j! F) G3 ~if ([trust-ok] of self)
5 k) G! P* P8 t6 ?% r0 M;;
根据ij的信任度来决定是否与j进行交易[
5 o6 H) @3 g0 j( O: Wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 E+ H& N7 D" c% w( N3 X/ P  G* E
[
2 l% `3 A( T4 @& ~
; Q$ }+ C% F: j7 C* J! b
do-trade
  K4 g& {: W; A) g
# a3 G, f$ f* D7 y/ z
update-credibility-ijl

# f9 y. ?( O$ l' R1 r# g) u- w# X0 w: _/ c
update-credibility-list, J7 b& t3 X, }. @, S

5 n: ~$ n* V0 o) G) X8 `: y2 D
  b: x) w3 a1 W$ xupdate-global-reputation-list
3 H( V: }. V  f7 s: C$ K
) y. ^8 j& q$ k+ J6 p& A$ O
poll-class

8 C: }$ h  T! s9 V' L3 b+ n& H3 x9 I0 t
get-color

; q) B0 e7 a5 `+ V  I1 m6 l. A: Q) `# v* j  V
]]
# f2 s  m) v. e9 ?* T/ C7 M
/ W9 i7 J; r" q3 X;;
如果所得的信任度满足条件,则进行交易
& N) t* L9 R; T1 S
5 S2 U+ k/ C9 E" y* C[

2 w) K# u7 e: e+ I; s8 G* m% Z$ E) r1 n
rt random 360

# u8 ^% ^* r$ a. G* Q
+ }/ {' A$ ?/ b* ?% j7 t# V# q# `$ F" J& ofd 1
+ \8 ?+ H) Y6 s, e& w

# ]+ [% I# o2 m; x; M% u]

! ?3 J# r0 d2 _3 |- i3 x- P& i1 c0 z8 O: q% L- s6 V9 x0 e
end

$ s9 y! e# J- {( k
. o# g/ y; g& ]  h+ J, [4 t4 Bto do-trust
' c! I$ {1 Q- Zset trust-ok False
& K- N/ [* n+ ^2 \2 U& S8 F% m. _/ |: E
9 l/ I, @+ Q4 n4 ^  h! g7 t) v
let max-trade-times 0
* x1 {% J- f3 V# a+ `$ Kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- G) z5 Y1 F6 ]4 H3 nlet max-trade-money 0
. d/ ?/ f" j3 I! D* iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 G( Y" H' r+ d1 Rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 k$ u$ o4 y0 r
/ J" L( n- w4 h7 R1 @& o
% r! `2 J0 ^- A* Q4 a, f3 a& l
get-global-proportion0 }5 d2 y- w7 v4 G9 G3 E: Q$ @
let trust-value0 V8 V* F( W) L
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)
& A" s/ K# F6 Z: ]6 P4 I
if(trust-value > trade-trust-value)
4 ?8 o5 r% J5 s# P/ w[set trust-ok true]
3 b0 I7 }0 A9 ~0 z! `end
; H! y+ c. \. g0 U& ~7 e/ m6 o6 `/ X1 `
to get-global-proportion
2 H0 E4 ?: U/ l2 n3 vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
- d3 Z! V, j! ^  X' S' W5 m; V4 m  L[set global-proportion 0]
7 v1 A5 u" }: Q6 w! U+ V[let i 0
; b0 F( q$ @. ]let sum-money 0' R) Q3 F5 Z: n  l
while[ i < people], P& Q. j6 k- w) S
[; N7 \# X5 _' d/ t- X# r
if( length (item i
, l+ E& X+ s# R4 o" v( v[trade-record-all] of customer) > 3 )
; E4 ]7 E( J0 L5 g6 l( P
[5 w$ q% W) r$ J0 B$ e* i. x
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! [+ z/ l1 u9 M9 t9 [8 e" \]: ?% F( c" [9 T+ O0 s+ d7 y
]5 V6 P7 V" f( [& [1 P( h% c
let j 0
+ G6 q+ N1 b# {8 l$ b0 f7 {  c+ W: alet note 08 \  A& r/ p4 M6 o& A
while[ j < people]* D6 p# u+ a$ ~$ Y* M
[0 X0 b; ]  }( M3 `- y" k# G% n
if( length (item i
: V: \" Q+ P# I$ `. t) ~[trade-record-all] of customer) > 3 )
2 x! z; k1 T, N( U( h2 x
[
; [! [3 y- ?) t: G6 D- f: Rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) _" c5 b* w) N. }& B$ d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. X; ^2 P/ ~, l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  X, d  ?$ e7 M" X4 T  X2 @& ^]
* R0 H' Y  p4 []1 P+ U' H& C+ s" D5 O6 z
set global-proportion note
' R9 P2 o$ R) R' _1 m+ v# S. r) P]
9 P1 M( a" J8 m. f+ [end
4 c0 c* @& k. z
4 j4 D3 f* Y( V4 p% e; ]3 p4 T! s5 bto do-trade
* W6 V6 _0 q* w: t( `;;
这个过程实际上是给双方作出评价的过程# B8 h$ c1 r6 t- E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ r6 F" T2 Z0 sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: B6 s9 [) [' d* r  n% J
set trade-record-current lput(timer) trade-record-current* Y! X6 H' m4 Q# {* v
;;
评价时间
5 t0 |4 B# n- R& Q1 _ask myself [+ C. w$ l6 j, K. P5 m
update-local-reputation8 n. g8 P6 n6 `8 s9 G: D
set trade-record-current lput([local-reputation] of myself) trade-record-current, J" a1 n+ T8 D/ G3 F: J
], `1 m( ~' S( }6 V$ a
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- _( v6 ~: ^/ K/ t; ~* C0 C( \2 z1 O;;
将此次交易的记录加入到trade-record-one8 S: x$ h5 C0 u3 H- b9 M( @' t
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 {7 b1 g: Z+ `1 F/ Plet note (item 2 trade-record-current )* o. o( n( q* d1 b/ x
set trade-record-current$ Y6 t# M7 q! {" N# O4 F
(replace-item 2 trade-record-current (item 3 trade-record-current))
. E( k0 G& l; g, ~
set trade-record-current+ L) }" |- j$ [* k
(replace-item 3 trade-record-current note)" i" S  n6 w+ ]
- I5 c: u; h  W

6 O5 \( K/ D3 M; I* S0 }ask customer [
: M3 r' ^  G% ?  [( ~$ kupdate-local-reputation
! F* B/ l8 s1 X) b/ k9 [& Zset trade-record-current
# q: [% G: |4 i) q' D(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; v) x8 {2 e" v, ?9 n]
+ {9 u3 s6 X/ A
) |# I) a- `& y# k  Q
; y! S: ^( u$ N5 B' F
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 S5 S5 ~; I5 D# h2 B% Z0 c8 H

2 j* Y1 x! U$ c" A9 L- z% y" y7 W. n+ ?& eset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ a/ {( t/ p4 ~' n# s: [2 R
;;
将此次交易的记录加入到customertrade-record-all
5 c6 d- u: K# @# \" ~end
/ G& W7 e' I0 o5 p3 o2 e4 D/ u5 p, {; s) z3 B6 E7 T) U! D! D
to update-local-reputation
; N# R- Z5 s& A+ c+ Fset [trade-record-one-len] of myself length [trade-record-one] of myself
" U$ [# q* w. g- p6 i
) o" z0 q& s& v6 y6 X, b: O
; p! }# a% @( u" J: s;;if [trade-record-one-len] of myself > 3
# w- a) X% X1 c1 R" r% U
update-neighbor-total& v$ p8 O8 X" r& ?$ D
;;
更新邻居节点的数目,在此进行
% e* {& {2 z$ i. D# klet i 3# }! C% l$ w  T& d0 ^
let sum-time 0+ K, D: ^% ~( @1 Z
while[i < [trade-record-one-len] of myself]+ T9 \' l( Z8 I
[
( ^  @  ]5 d- b9 @set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( {( X7 [# b- M9 W  x" nset i) U; ~! h# R( `3 A( A3 G
( i + 1)
' H% O" u& A3 g; U) _1 ~
]
' E9 p2 O8 N/ w) T8 ]) {let j 32 C9 q; j+ m9 _  p  l
let sum-money 0( d- _4 A0 |0 P6 E6 B1 Q
while[j < [trade-record-one-len] of myself]3 Z& Q5 k+ H+ A
[0 z+ u+ V* t2 B& z, C( g% q
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$ M* D# n& k& f) z' }) }4 t& q
set j" ?, C+ u3 `1 E' l
( j + 1)

5 @1 ^1 `4 d* J! `: o: f( z]
/ C, h' k; S! ~4 Tlet k 3+ c7 _- S( j& S, ~
let power 09 L' y$ Y, ~0 ^) d% w( A
let local 0: L# c6 x; h7 a+ u  d
while [k <[trade-record-one-len] of myself]& K! v& s- R! v% i4 ]6 u( M
[+ {: r. Z; c& G' 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) % m( h1 _9 X, u0 }2 n7 F, Q5 Z3 C
set k (k + 1)* W, Q, L$ t9 E5 V6 A0 r% M
]+ i3 ]7 t0 n! _0 Z# c
set [local-reputation] of myself (local)7 p9 k) R' Z# E8 n- M9 M7 j8 B% Z
end! M8 _. o' l8 T9 f$ W/ N' m  U
; q) M! j  U! P# v
to update-neighbor-total
# J# C& w* F+ S7 {! @% ~1 r" L- V4 C
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# u4 |+ I8 T- H0 W) Y7 n* s& N  s" q6 _. {5 s# F$ d" C
" ~5 i5 `3 [  Z$ A4 |  v# y+ d5 D
end8 g  F* S4 H  l3 q

% ?( m" y% n( M' a  K5 Hto update-credibility-ijl
, I* ?9 d  e5 l2 b5 I3 [2 g, e* [% q  M( \4 w) ]- @) f$ @6 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。
: j: N8 I  q3 x( Z/ @let l 0, g7 q7 C" w- C, g7 G# I# h
while[ l < people ]8 ^/ P! v1 v' y, f' v' t$ s
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
6 y) I4 E* p8 ^! p3 h[
5 e- Y9 @& o' U+ S& ?let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, x3 O# `" b$ ?6 K6 Cif (trade-record-one-j-l-len > 3)
; d, e- A  B& O( L[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! q1 V3 ]5 m! X  E5 ^: B2 q0 g
let i 3
, B# w) g9 Q( {9 {1 ilet sum-time 0+ A% D' J. v$ I
while[i < trade-record-one-len]
2 B/ [' {( g3 }6 K[
: q% z  i- N5 o9 Xset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 h* B6 G4 f0 a; H9 z( Bset i
* ]* a$ F! F4 j" ^: K0 J' d& n( i + 1)
/ n) Y! W4 W4 A8 S4 B+ x
]: X. i0 U$ Z3 w+ z5 F
let credibility-i-j-l 05 O$ ]& s* l" f: ^- f* ^+ v! Z$ F
;;i
评价(jjl的评价)9 I, a( e$ }, @0 \. c! ]
let j 3
! A# t* I) {2 T; \' R2 Alet k 47 b; Y- e0 _( l% ^, c3 X# m; b* y1 ^
while[j < trade-record-one-len]" v4 m! Q' N8 T/ q
[
1 [" \) R4 F: ~, T! z4 q3 V' u9 Kwhile [((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) f: `3 ?& G: W: ~" b1 I; G
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)) B$ Q' o1 _; _9 F
set j
6 c7 ]5 E* z' O( j + 1)
( U) T4 ^, E0 C
]0 i& g! D) b+ b7 P  x0 _0 f
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 ))
0 @- q) T! s6 i! ?# T) ]
3 `* K: ~' [# @! |$ A$ N' ?
; B! f0 ~) D! I, i# E' O5 `& L
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- N- R. k' f# y9 q+ V7 v2 a) w5 };;
及时更新il的评价质量的评价
  i7 f. B2 p# W4 m3 hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; X6 \: D& h* eset l (l + 1)) g% a. Y$ ]. ?: Z
]1 L/ F% \# o: o* T3 R
end
7 m. s& b* u& Z( ]7 c# S
7 _& U8 Y" ?. z/ d8 h8 Wto update-credibility-list
) ]; r1 N  M/ \" @( g, ^4 Nlet i 01 W9 D9 s' I! a1 W+ o) p2 K; E
while[i < people]# J- h$ A8 [. q1 i. s1 k
[
/ M) [' j! B; D+ l( Wlet j 07 t0 T, l. i0 B+ [0 b( ~, L
let note 02 ?1 h7 x0 P6 R) q
let k 0
3 N5 ?5 q1 G7 F" T;;
计作出过评价的邻居节点的数目8 O& F9 B' @1 J* h' G9 t% S7 E
while[j < people]
! U1 A  _% C. e# a4 y[
; ]( y/ P/ I" L: u1 P- Mif (item j( [credibility] of turtle (i + 1)) != -1)
4 g7 g2 s8 @, K7 W, M0 g8 G6 u;;
判断是否给本turtle的评价质量做出过评价的节点
/ R% k* k3 F  ?6 M( _# |% a9 c[set note (note + item j ([credibility]of turtle (i + 1)))
: a9 F" N/ ?) i: C* L+ |- M;;*(exp (-(people - 2)))/(people - 2))]

( W) j  C' E5 U+ v8 sset k (k + 1)
" q! T7 P4 ]7 O9 N- `5 h]
8 O( m, `4 j: Q# {# {. u3 [3 iset j (j + 1), a7 K. d3 `( q: A: j! k/ {  E5 e
]* d. C) U- x1 Z* R! Z  e2 ]* h2 i
set note (note *(exp (- (1 / k)))/ k)
) [3 g* g: v- ?set credibility-list (replace-item i credibility-list note)
3 x1 ]- C. ~) C# Oset i (i + 1)
( W4 W! }% ~9 |' B$ d]
" M  ]* H6 A: h* r2 r, Oend
2 ?/ T6 _& e/ {: }; b
( [! K& e% t& L2 Q/ Ato update-global-reputation-list( M$ K+ D. P( Y
let j 0
, C, n- z8 |) `1 |- W, J2 qwhile[j < people]
& u: J9 y7 l: K[
- }5 X3 |6 o8 s, `let new 0, _# z% n& y- g6 i7 v, A( B0 _
;;
暂存新的一个全局声誉  V' C# G2 ]) _6 ]- L) E
let i 0
4 P: d$ r: h/ m; Y8 Q" w% k" g/ \let sum-money 04 d8 e6 u* l5 O# F' t
let credibility-money 09 G( a6 [: J7 E2 `* E1 ^7 t) j
while [i < people]
9 v% N$ a3 v0 Z0 [[3 W  W( M* P; A" ]
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 _: C, j1 a+ J/ H5 Y0 M# b
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' k' X! Z* C* ~* E+ Q- fset i (i + 1)  F+ W# }& \( I) U! V& D9 G' x
]
( o7 F$ F" N: u3 Vlet k 0; c! j$ s9 V: I9 P' w" \8 S2 P: f) x
let new1 0/ O; b' x8 u5 {! j0 I- M
while [k < people]
& U( }" T6 m1 V[; \# B! f) D& W4 I0 g2 x+ ~
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)8 Q8 `, M: t! L
set k (k + 1)
% a) _# \6 n) [' ~- p, B]% N3 |+ d; K) E" ~& O7 A
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 d3 ]( d& B. T( [
set global-reputation-list (replace-item j global-reputation-list new)3 S$ S9 r) Q' [9 B* k
set j (j + 1)& u3 u/ @) e# z/ R7 K; R
]
& j8 S4 u+ U  c; |end
+ z. c2 ~# @8 P" y( o; U. d, x2 F$ R% F1 Q) Q& ?

1 [- T$ q& r# G5 _! J8 ^
, [' |3 B+ ~+ }% y$ c- Nto get-color
/ `/ i7 n5 h$ R; X5 w. t) K: t1 I6 h9 ~& s
set color blue

8 J4 E! m0 U- Q: O6 e9 oend
' C! F2 [% c7 \  A
* l" D/ t% L" c' Xto poll-class
+ f1 l, a$ X) h$ t! D- \end
+ U- m- p6 R6 G" o2 L- Q5 h& j( N2 w$ U# E
to setup-plot1# R. h) z4 Z+ A' _; r' n

3 l2 {; s6 C: q. A2 V! h" a$ Vset-current-plot "Trends-of-Local-reputation"
1 m, J& s& s% L8 T

: D# w4 o% u+ D5 Eset-plot-x-range 0 xmax

+ }: P& w, G* i6 R9 T! n5 M) Z, b
# R9 Z5 g+ i7 u# H; fset-plot-y-range 0.0 ymax
9 b& J$ @# Y0 y8 s
end
. }! d* ]$ Q* A2 L. @% V1 w* A) @' w. K" Y2 O0 N
to setup-plot2
( \8 L5 A/ ?4 Q; z; \, L
& r* l% h7 W0 W/ P. Cset-current-plot "Trends-of-global-reputation"

, P& y2 ]* i7 O% b+ J' i0 S+ x" \3 P+ u& x$ j" O& d: B8 z* n+ v
set-plot-x-range 0 xmax

; Q- p- h4 p$ P, t3 v
7 F8 a5 A) u- pset-plot-y-range 0.0 ymax

. I$ _* N, g; `7 L- o- K# _end8 X6 p- K* o6 d& D6 M
" W2 h6 c& n# _  K8 E; l3 G
to setup-plot36 h; D/ ^9 R, X; p- b2 n
6 W) A3 f2 V6 M, D  [# U. B9 O
set-current-plot "Trends-of-credibility"
% T# W6 A8 R5 Q! a* y% I- ~5 h& b
3 }# |6 N- s9 j( ^* @1 w
set-plot-x-range 0 xmax

7 P4 A0 Z( ^; f# @8 O5 X
( h+ O/ e/ j3 l2 j% b+ lset-plot-y-range 0.0 ymax

- p' n3 ^% v  l8 eend
9 j* ~5 l% P% u% _% ]7 g
" |4 }7 C+ t! e2 Ato do-plots
! y+ }2 e  |# w5 o. x7 V8 R% Oset-current-plot "Trends-of-Local-reputation"
0 z9 g( n6 L' a2 y# `- J0 `set-current-plot-pen "Honest service"3 w) Y9 q: @( D! D. l5 U( F0 Y
end
; f$ z% s4 U2 N6 }8 z4 `) n4 m2 _
[ 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.6 e: v. t/ |% O; N' @3 y

1 P% v! f, _& [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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