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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:
; W# H' M9 W5 r4 Q* {  Yto do-business
% ~, X, b8 q) r% L rt random 360: D! c9 `1 ~% ?/ g
fd 1
$ K$ m% K2 R+ h7 ^7 T4 `' I  [6 g ifelse(other turtles-here != nobody)[; c3 q, B# L! L0 [2 e- t! 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.
% X7 ?1 h& E/ _/ U) N! e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  f) f6 H# d# R. p   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& K9 s5 T& z/ c3 o   set [trade-record-one-len] of self length [trade-record-one] of self
# i9 i) M( Q2 F- V8 S, w8 |   set trade-record-current( list (timer) (random money-upper-limit))& ?% m6 g  d* P1 Z5 n, l

8 u8 m. l2 q8 g3 s" |" z/ z问题的提示如下:/ H$ q( y* t+ t0 b0 U
9 z& X* z4 Z% {! w
error while turtle 50 running OF in procedure DO-BUSINESS, p" b" u! B$ Q5 w& x, _. B1 i
  called by procedure GO
3 j$ K) Q; \: ZOF expected input to be a turtle agentset or turtle but got NOBODY instead.) v& p) u2 ~. m4 [! P! ]. g
(halted running of go)
" A- ?! [0 I& p9 y. m# z: i! p. {4 R! b) R
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 a9 F2 r$ |- {% g! f- O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8 {6 G% n% a' w. R+ v/ i* R
globals[. o1 w0 n* L1 m" j! d7 f
xmax  V9 V8 O; G$ E9 G' v3 I' C
ymax
5 w" G3 z  m) g4 Rglobal-reputation-list5 B4 F# {$ o9 C- v+ t  @8 p. Z

9 n  g! m# \& ]+ [5 W# U;;
每一个turtle的全局声誉都存在此LIST6 \8 F  o6 L7 F* t3 r' N
credibility-list
, S. Q6 T1 X& J6 F5 b! ^;;
每一个turtle的评价可信度/ E2 ~) k1 C( ~* k3 B! M
honest-service& b8 \0 R1 I0 ^( O( V' b
unhonest-service" C7 F" V% @7 y: _$ W( _
oscillation& r& k$ E$ ^- y% ~' c
rand-dynamic
, _! H5 e8 }# u]8 p9 }  b  N3 h- M  M& a8 X
! G" ^+ e- Y% A3 W6 ]- `
turtles-own[
5 O2 W" l& ]" I! J5 ntrade-record-all8 N& z: k" w% A, m
;;a list of lists,
trade-record-one组成
8 e' h: B* t6 Z" p4 j4 Ttrade-record-one, M- G: A; {. ], [* [
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
6 s, F& D! S4 h2 f
, J; w4 u! ]" X7 f;;[
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]]
8 M/ L+ t" d/ ^3 S& Q  otrade-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]
( L$ \* e& q+ \6 i6 Vcredibility-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
. h# F9 D7 H) dneighbor-total
% j0 {$ N- j; l7 R/ }: [  F( M;;
记录该turtle的邻居节点的数目
5 L% p! I2 e8 C! U1 ?trade-time) B7 @- t* K/ k# x, q! c" [
;;
当前发生交易的turtle的交易时间
  G4 M: d- t1 r  ?0 U' m& Kappraise-give- c/ d. I# G5 Z" X, l9 [
;;
当前发生交易时给出的评价
6 A8 t% @, q- o. R, Sappraise-receive
" V0 z6 d- g$ M5 ?;;
当前发生交易时收到的评价
, {7 z, {) \! Lappraise-time
3 u! i: g: F, r- k+ [3 u! K;;
当前发生交易时的评价时间
- C, k( {$ K+ N0 i1 X$ Glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉. ~$ J5 a" g5 v, v0 X  Q- R5 [
trade-times-total- ?" X$ e% ]$ d+ F; R1 T" L
;;
与当前turtle的交易总次数
- f3 n; K! u: O, s( ?# l# dtrade-money-total. N5 _0 ]8 M, D. j) ~( U
;;
与当前turtle的交易总金额
) l7 W: w" K' \- C8 e! g# D. f3 d1 hlocal-reputation
) i2 [  J. b8 H0 |* K% k# n6 U* f, Pglobal-reputation
# ~, ^4 r1 R( R( D- ]credibility
6 @( k5 f5 I* \- }4 b3 {7 w* ?0 g- q;;
评价可信度,每次交易后都需要更新: j8 o. w- Y; q2 ~. `: q8 C
credibility-all7 z2 P3 S+ p2 X9 w+ T: O
;;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
/ a% N% i7 j3 ~4 j: Q8 v5 T2 d5 D2 j
;;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( g( i( U# x/ q: o
credibility-one: x0 h+ {; F) `2 j' k8 _/ 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people7 D, @5 t' y7 ~& g  Y$ S1 e/ d
global-proportion/ G2 e; ~) a  [; Z
customer
7 K' i0 P& u; Q4 H2 v5 Kcustomer-no
8 t/ L) Q) ~  r) _$ h; T$ ntrust-ok) q) g( D" s) V5 }8 c
trade-record-one-len;;trade-record-one的长度3 ]( S) {! o% K
]
- I9 r: O! I  r: a) n
6 Q4 A1 K# @0 S7 E) d# t;;setup procedure4 N! O6 R+ Z& O0 U/ L

$ V8 C% D4 t7 ], x7 ito setup
/ ]  M! p" n; z. V/ z) [
& H6 p+ \3 K) x/ E9 L( Aca
1 w; e4 D% i* {; f( `0 e

7 e% C7 e3 a/ R: X5 l7 R0 O4 }initialize-settings
: I; q- {* Y) E" k  }2 w7 q

8 O. X& l' I) Scrt people [setup-turtles]
5 N- U" e3 I# L

8 g6 R; q3 F/ f, Ereset-timer

* X2 I' m5 e6 w- ~& h& d1 F
( y- w, y: ]/ R, l$ n  Upoll-class
; d. a6 K) j; l

# g9 ~0 _. l& Q" a( C6 Osetup-plots

7 }2 a  i. B3 i- s7 e5 [
: M% l3 m7 b/ }/ @  `% X# U1 ?. `do-plots
$ ~2 @: L! ^) G: D6 O% E0 Z$ X
end
9 T" w5 y5 N, }% I. p3 C
# k/ P1 ~* O. U2 R7 i4 j1 pto initialize-settings& j% b# w1 P7 O7 U2 m

' y7 `+ R8 c5 Q* P1 x# Xset global-reputation-list []

( n0 e9 ^! l/ B3 g  e' k8 h5 |) D$ T5 L5 I; L: Z
set credibility-list n-values people [0.5]
6 q6 N" S& j: _  j

- e+ t$ _% x. ]# j( V0 \set honest-service 0

2 C; @% J* D3 I2 _6 R8 c! U2 m! }, k4 ~
set unhonest-service 0
  l: h' V& N1 C3 S1 ^1 ~
5 V2 ?1 L  r" x) d8 ]
set oscillation 0
- _# V9 _* h' u: L( B4 n9 w2 z  T
1 I+ y9 R( i$ S# ^; I0 `! m
set rand-dynamic 0
% S: M4 N4 I6 o+ y
end
& }5 [. u+ j) i4 R$ {* n
% ?8 {+ p# o( Y8 d; P0 L% t1 C8 Pto setup-turtles
6 p) K  ]: h; {: P; V( mset shape "person"8 h- k: V0 D' r' h9 d
setxy random-xcor random-ycor9 n) p' Q, r+ ^3 h$ C& o
set trade-record-one []
$ k/ \) Q  X# ?2 Y- p- I2 L

/ J, Q: T0 e" @3 z  M$ l+ Sset trade-record-all n-values people [(list (? + 1) 0 0)]
! g# q  d2 H' V+ y, z( x

1 h: C* h% z5 Tset trade-record-current []
( J/ P/ A2 N9 w( eset credibility-receive []
0 N) W: S& J% D4 [  N5 P) N: Eset local-reputation 0.58 H. }. I! H( p0 H; F% o3 S1 _
set neighbor-total 04 }& T% V% ]- ?+ n4 ^
set trade-times-total 0
5 U" c- U. s  ~; z! t+ v; O4 Rset trade-money-total 09 F4 Z3 f; x1 X/ E( e3 ^0 d7 x/ I
set customer nobody, l& n0 c5 H$ q( w
set credibility-all n-values people [creat-credibility]
) _# ?( w2 W4 z, V5 W/ Yset credibility n-values people [-1]
: z% n/ M* W2 l. v6 @. Qget-color
6 t8 y3 ]( Y& ^3 u- y( B! |) n* B
: H- {2 M6 o& k% J! D- `
end0 d) }# K6 M: A# J% E  P" }
, }. \7 w. ~# s& g3 y, r! s: N
to-report creat-credibility
1 U* k* @: d7 ]2 C3 @* \% Dreport n-values people [0.5]
3 N3 k) [! ~3 V9 c# X% p6 mend
& Y- B1 B7 z# f+ P- y6 \% l  n& j
0 h9 P2 O5 ]3 r  S. h# F' g% l2 |to setup-plots
* ], T- z1 I, [- j1 w3 W) ~2 k& r9 J- L6 l; Z
set xmax 30

6 D$ n- c- {) ]$ V( ?6 m& S8 k, G: N
set ymax 1.0

( K, z7 d" Z, v& I! ?9 D- T/ p3 G; d
7 v8 t( w( {7 {4 `1 |: M% dclear-all-plots

" E3 H7 S4 x3 t9 o  Q
" w% C; X3 b0 Jsetup-plot1
+ j7 ~  b1 ^( v7 D! J
# ~" x8 A* K- x0 X: b
setup-plot2

- Y7 [0 ^  l$ G" R8 G& c
. i  @- Q& J* h0 T, T- y8 I% G  {setup-plot3
$ `- B  y: d: a, |/ ~8 X; z0 n
end
+ Y1 f, `9 H* R* ?$ L0 b( K% Z
! ]7 `  y8 O, h8 _;;run time procedures# \/ K! r( X- _; H2 h: Z

8 C1 [- [7 B/ m( J% `# S& Q" ~to go
2 D7 i3 ~4 k& }* n% t) Z6 V! W# L# o
ask turtles [do-business]
  k$ l7 I; V, M& S: A' ^
end
  ~. `" x/ q9 E6 |* ?4 ^1 m, i. z& W' V1 `/ ?: M
to do-business ) j- S' ?. f8 {3 ~. t* E5 a) U* @
+ B% Q8 o& s  B

. _+ F/ G+ X" a3 S7 h% Urt random 360

* Y2 Z1 o. y( f6 Q0 W$ k* B
1 P. l0 B1 Q4 u" f# ]) z5 ]5 g* qfd 1

  c4 B/ t: i( S" P* F6 K  Z' Z( Q8 \- Q3 h# |7 g% d" F7 J0 i5 Z
ifelse(other turtles-here != nobody)[
$ A  M6 S' b+ ^9 z+ N- f
" k, b' [7 O; @* a! q. k% f
set customer one-of other turtles-here

, H2 H( m' {5 u0 l+ f$ a! {
1 S' ^4 D: C1 S1 v;; set [customer] of customer myself
9 g9 M9 X/ Q/ L7 y! _) t' z

! h, |+ D( o2 l/ x1 Sset [trade-record-one] of self item (([who] of customer) - 1)
( ~' f9 D. \. n) O[trade-record-all]of self
5 T" f+ ^! H0 t: K# ~" l+ E2 y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' z. q! F' l1 ^' E* Y
$ u4 q0 n2 D* T' _5 [! u0 k
set [trade-record-one] of customer item (([who] of self) - 1)
, i0 R" r3 Z$ a- {5 Y; f[trade-record-all]of customer

. I" e1 f4 X$ i! R5 s6 b2 {
& ~4 F% c: u# Jset [trade-record-one-len] of self length [trade-record-one] of self

( f  H6 e) L. t+ @' E% w: K9 @* }4 C. M. R
set trade-record-current( list (timer) (random money-upper-limit))
( I- k4 G6 p4 O7 R% X
6 E& R3 L3 {- l( Y
ask self [do-trust]
/ d: C6 N' S" Y# m0 e& p;;
先求ij的信任度
% F  g# t: f* i) q1 }& T
! Y8 \1 \; @1 E, |if ([trust-ok] of self)
: C# R: C5 x" |3 e6 @0 @;;
根据ij的信任度来决定是否与j进行交易[) W4 t% K0 n5 q! g; c7 e) M
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 H% o5 s1 e$ [/ z* q) }; q$ K/ S7 Y8 x9 j6 f$ q- X
[
2 S0 X1 k% _" [
. a7 y3 g" ?1 W8 i. f) z
do-trade

. {0 N% Q8 {2 q; n( ]+ ?# V2 |, ^8 p( I6 A+ w0 ~: P0 u5 {% v2 @
update-credibility-ijl

, C  t5 y- r' j7 H! M. f/ G% m. m4 u) f) s: s5 y
update-credibility-list* x/ h, e3 h( z6 f+ j- n

# k" T0 ?7 Z( w+ P- \
- M! {& V: g- N0 Wupdate-global-reputation-list
* T) S1 C$ u4 v+ {( z0 g6 }

. B7 Z1 p( n  X* r& K: J9 [. spoll-class
1 ?, T! `$ m( }
# ^: \( f- `( s" k8 l& [$ O3 b" ^0 I
get-color

& p' K8 c% Q6 ?; f( y) D( Q* m  g- i. n5 z) v+ h
]]$ y1 \+ `; Z$ Z8 n8 {6 f
% z4 C# d( N8 C' _2 o2 Q2 H! M
;;
如果所得的信任度满足条件,则进行交易
' N$ L5 M: G3 H) c# ]/ \/ p
! w' s% g7 b8 Z, m' c% b' ][

- b2 G% A; f" D' N' D: N1 f5 {9 L1 Q. _  j: W& A! O. {- K& H
rt random 360
1 \9 d% Q( l) F. E) C& {' [) m7 ~

+ m: V! P$ n6 d6 @$ Afd 1
" y$ R6 `, n: ~, b( Q( y

, `5 J/ }, R, l; a( }4 ^]
, ?; p2 l9 F7 a$ |
7 a' b0 c) b% r0 _* m
end
/ u9 _7 m6 f3 o2 F
' N% a4 _0 w/ r0 a# ?
to do-trust 3 C; J1 c+ ]/ h+ Z5 L
set trust-ok False
- I# ]! R, m' |# p$ [( o' E! {) q  W" O% I

# D6 F, N3 [: E& U( y  Olet max-trade-times 0/ `3 e6 {# J% s$ ?( A  ?: N! l
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# C! e$ g# p0 h+ J3 T; {% alet max-trade-money 0
. M  v* G1 [: Eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* ?: @3 j. D: T1 j
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& P& x0 B/ B% A7 f& \; l" C! {+ a5 ]+ M: k
1 C5 I3 h3 X5 v/ N
get-global-proportion1 O0 F5 g6 O# `, f' \  m
let trust-value4 ?' Z1 r( I" f- l3 T
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)
- U& _% l' s7 [( D
if(trust-value > trade-trust-value)6 E% ?$ J) d: t
[set trust-ok true]
- `2 i! \: J9 [" V' mend
0 {; F6 d& B: g7 ]% |, t
: o: t3 k" F) t" sto get-global-proportion, M' ~( V( u! |; J
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, ^' P5 \+ Z. P$ V[set global-proportion 0]
3 ?9 w0 k9 z  f- @$ w% `: y3 W[let i 00 U" O' R/ W0 ^0 \7 x) x+ k: z/ U! C
let sum-money 0
- K3 |# e$ c1 Y) I+ vwhile[ i < people]3 O! q$ i% u% G6 f: s
[, V; _, }% j9 c. m' ]4 }' u
if( length (item i" r5 {! w$ ^1 {5 n6 _
[trade-record-all] of customer) > 3 )

) {7 N1 |% C  ]5 R[
$ R7 \" D$ b- r& T% E4 B# P0 ?set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ A! o2 {* B. ~$ ^- l]
/ J6 l- {9 w, v0 d]
* |2 G: G, S! K) p8 V: m  Blet j 0' u7 ^# T  O: `/ K! R* D& F' M
let note 0  D+ b, l- @7 V/ f0 [' o/ p
while[ j < people]+ @: \* q( A8 u  G* f' }  }
[$ u1 ^( w* B5 P: n  D2 x) a9 E7 h
if( length (item i
0 B8 p' j; I+ J0 |7 ~& i( K# c: O[trade-record-all] of customer) > 3 )
, S5 k' H* K3 L! L+ f9 B1 e" w
[* K9 x7 r6 A! ]; X: N* x
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* d4 p1 m; v  [8 R9 R4 W2 G
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 c; z6 D1 Z3 C. e1 ]
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ u; s2 p$ z+ T6 ^
]
5 F9 ]( k' L# a, R]
& E- n$ M% Y/ f) Iset global-proportion note
5 C' a$ S1 Y& H) t]
* P2 R% U2 ?( z& U$ B; gend
1 N0 L5 b& n- d& S1 b+ ?
* J! i: m* o% _) X" Sto do-trade5 H, Z0 P9 ^& g4 z8 E3 t+ h
;;
这个过程实际上是给双方作出评价的过程6 ?9 T5 I2 p7 h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  k. L1 q9 g& `0 }4 e% J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价0 P2 g+ M6 }4 o7 G* @# G$ q
set trade-record-current lput(timer) trade-record-current
1 a$ r% _$ K; R/ }9 H/ w;;
评价时间
1 @1 W- x& ?) V) H7 zask myself [5 c- c) T' Z3 _
update-local-reputation# l6 k! s) Y" V8 s& [* ?& L
set trade-record-current lput([local-reputation] of myself) trade-record-current4 M  `1 x4 R. C! J% K
]
) q0 j, `8 e8 Y6 R6 Cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. H" \7 S' d& J, w% o, H2 T% E# O3 X
;;
将此次交易的记录加入到trade-record-one
2 `7 o. b9 q* t9 B- P* j4 i7 q) _set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 ~) q  B4 V8 E  B/ ?9 K/ j) h+ ~let note (item 2 trade-record-current )7 ~* x5 Z. ?% q2 J: A) @
set trade-record-current
+ Y/ g$ ?" E7 O4 I4 }(replace-item 2 trade-record-current (item 3 trade-record-current))
7 O' x3 a+ M( x5 o4 I* s8 k
set trade-record-current+ m+ ?% _8 g8 J6 Y6 ]; Q- {6 E
(replace-item 3 trade-record-current note)
" Z9 l& u4 W$ }+ |( P4 {3 ?4 N( O, ]. ]) @6 J4 z

; j) ^. c/ D1 Sask customer [0 f% A; k) w5 M: j) {
update-local-reputation6 m9 k  m0 [) K# c4 d. E4 Y
set trade-record-current
& C% u6 o/ ]4 N/ z3 Y( x/ {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& W9 }- _+ F2 e8 O9 C+ e4 ]]
: ]; I8 a# _$ a/ F$ M- h2 X1 U& p  I) I9 M: X
  t# a4 C3 l3 I2 x# C- v1 I
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 R" x5 W6 t1 {" V' I3 M: {: ~% a

3 l/ _+ M" f1 L6 ?set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
) y3 w& O$ |0 z& J;;
将此次交易的记录加入到customertrade-record-all
% M' k" C1 D9 A, [5 {end0 o1 y( q: Z9 F7 f

/ c* [* u/ c8 M! x2 y. m* ?to update-local-reputation# \9 B! K0 ]* b& v& T, M
set [trade-record-one-len] of myself length [trade-record-one] of myself
5 x9 ~9 D) G4 r4 |6 U* ~/ Y% H/ _- t
# I) K# D) R- o- r
;;if [trade-record-one-len] of myself > 3
! a1 g- K, o4 |. m" K% F! `+ {. c
update-neighbor-total
" O8 w5 S" o. w4 w5 G% t; w;;
更新邻居节点的数目,在此进行3 b& ^. p% \& K0 @, s- n! Z" c1 V
let i 3, y1 M+ J, m7 O' z2 W4 i
let sum-time 0
, r: C6 T* Y: P: H7 n% n5 Qwhile[i < [trade-record-one-len] of myself]  ~( {% A/ K7 Q5 O# A, u
[9 K* r8 x- e. f
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* W* M6 {$ u, s" C" Tset i
( ]! H* i7 l+ ]" l( i + 1)
: I9 X4 \, X: @/ T" s. q$ C, T5 M
]: S# A9 i% K- B3 }: s
let j 3
2 }. v: g3 A" Y+ e: q2 ?+ Wlet sum-money 0
) M& [8 u- w- I0 r; qwhile[j < [trade-record-one-len] of myself]
# Y$ @6 r1 i5 {" U/ b( W[
- n! M5 o8 y, l7 Q& zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
6 C; U$ G/ x. |' ]# cset j
5 E2 c% R; }9 ]& w( v* I) \( j + 1)

5 C* ]9 ?* y9 d+ I$ X; I/ ^5 T]
4 r, w0 t  [5 D- p& a' olet k 32 V' b4 x$ h6 [5 ?5 c: o6 T0 a, v9 e
let power 01 s3 ~" k( r( L/ {% G7 K
let local 0
) u/ k2 Q: Y1 r4 _; x; Lwhile [k <[trade-record-one-len] of myself]
- {& F2 d' o1 I+ e[( O( ~/ t# t; E0 C+ I3 [
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) * I" ?  U! I# k- K3 t! F
set k (k + 1); M/ n8 I; r; j7 g
]
* k- n3 Q& R* R8 _/ K( s; Sset [local-reputation] of myself (local). U$ _  i% Q$ I9 s1 y  L/ V
end# n$ W( d# Y2 l! s& f

& l  K; l6 k4 y  B! V+ wto update-neighbor-total
4 z+ G4 n( o3 T  U1 J1 A- n
8 e0 ]* a+ q. e! y" H' wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ s7 i) M3 ]5 X1 C9 |0 J- |2 l/ I) H8 S# L
; v  `' a7 r% N* S# R
end9 o* S" g+ B, y1 I* s. m# G$ Q1 Z
3 b7 T) _& l) j' P* }0 I2 w& [2 r
to update-credibility-ijl
7 i+ `6 l7 H9 d& q2 A$ G" m
8 D+ x$ G' u  ?  W% U8 x;;
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。# _( D/ S8 j- b+ Y; z+ u
let l 0
8 h! O/ }9 ~! p$ Ewhile[ l < people ]$ Z# x1 O1 {7 B9 `+ t% o: ~
;;
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
  e: J1 W' o8 l. D9 y[! G1 I( n: A2 _7 r. ^+ G% j
let trade-record-one-j-l-len length item l ([trade-record-all] of customer); o6 a3 i7 s3 A, x! R5 E
if (trade-record-one-j-l-len > 3)
% t1 q  p9 j) F' u. a6 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-one4 a3 ~  D/ o6 i7 d# C7 p9 _& Q
let i 3
4 r3 u/ _) U3 M* Vlet sum-time 0
5 `1 z! A* g) }. J" C# Ewhile[i < trade-record-one-len]
3 V+ V1 E1 c/ \* L9 s4 |[5 n% J# L. |6 O0 d0 I
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): j4 b* H8 d7 K! B7 e9 S4 b& R5 v0 t
set i
& P# G, s$ g2 Z7 e( i + 1)

) }+ O+ R; A3 t]
7 i* H, l. K6 c9 I! [$ y, flet credibility-i-j-l 0
. _8 c; }# K$ E) a;;i
评价(jjl的评价)) {6 K  C" t  _- V9 n4 E
let j 3: S, x7 u/ d" d# P
let k 4& o8 S6 |" Z0 M4 [
while[j < trade-record-one-len]5 j- q3 `! m7 n# B" D
[; U; V+ u, c$ S2 C" f0 s
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# w7 B2 O' P- U1 y7 J+ f4 d
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)8 I3 `- [& P/ S8 Y
set j/ R. j3 G, {; y8 o  U/ d
( j + 1)
7 S0 k2 Q% c$ j+ |" L
]
$ S, w) y" Q* \7 iset [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 ))
$ C( i( ~$ i$ ~0 N8 s; X
$ l0 }! x  `1 X8 [

- z# `% c5 u, h4 J$ q$ O7 I9 h$ rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ }; y0 J9 m- H# O/ b
;;
及时更新il的评价质量的评价; [, c: R; L8 g/ T! o
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 ^- \! |9 @( d2 a; |' H# ?* |5 F& c
set l (l + 1)
6 x8 v# P. u" M3 ^6 J& A]
$ e( ^# O6 f0 [/ h0 g) A) v" f3 jend* Q7 R1 I# [& Y
2 p5 h; f# Q- m. }! y2 E- ?; E' o
to update-credibility-list
7 n: z7 D. g8 X3 f* b" Tlet i 0* e1 y4 f* L7 L& J! }( O
while[i < people]
, b( o) }% Z/ G' R$ R/ s[+ l" x- M  L: e( f' s) [- z- O
let j 05 k' \8 B9 J! P% Y3 x
let note 0
, @% m: d3 p% E, ]! C' {; Q) dlet k 0
" X  l& E: V; }* i' _;;
计作出过评价的邻居节点的数目, z+ `* g3 j* M6 ~* G. k. ?
while[j < people], K  M6 y% J2 k' m; L0 R! N6 K
[
. O4 b& E2 J( f3 W% M/ Rif (item j( [credibility] of turtle (i + 1)) != -1)3 a  X+ ~9 a8 j' D4 o/ m* n3 U
;;
判断是否给本turtle的评价质量做出过评价的节点
1 `0 O; S6 F# U; {9 a+ q[set note (note + item j ([credibility]of turtle (i + 1)))" o9 o5 U: v- D9 I" A
;;*(exp (-(people - 2)))/(people - 2))]
* `4 w$ c0 ]# Z  o7 L- h
set k (k + 1)8 X6 e) S5 O9 d- U( `% w
]8 `" _; C# W2 @$ l" @6 b# m4 |+ _
set j (j + 1)
8 R: F* P- l( |4 B7 v]+ H9 o4 U! S' P8 J2 U
set note (note *(exp (- (1 / k)))/ k)% a! f: f& B0 C( f4 w
set credibility-list (replace-item i credibility-list note)
) b2 k! p0 A# _0 Y# Pset i (i + 1)
9 J9 \" V" |" G) ~5 ]4 M$ S! F/ j]
6 P3 ^% V( O, \5 R8 {6 I( L4 l8 C8 Kend
/ @  b- h5 |9 |7 |, c8 Q& W
) y3 m/ H! ~- ?to update-global-reputation-list+ k& Y6 {6 g5 v% v3 j# Z; B! m5 a% x
let j 0& W$ R6 e2 F( s5 w7 I, |
while[j < people]
" }0 ~9 V' g# v: K) B3 t8 v, s[
( J7 p) K7 r& p  Nlet new 0
& F, Y+ g8 C$ C6 S8 u" g) h" x9 t;;
暂存新的一个全局声誉
6 K6 F9 o  X5 R! i; z! ulet i 0
! b( B2 T4 m6 elet sum-money 0
) I1 x% |) z7 P$ E; j4 klet credibility-money 0
3 F/ |  n, f6 U" q( ~while [i < people]/ y( `- w5 }& J. x
[
0 f; \! w* g1 W! g) M! @. eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& {6 ~8 G; ~! l6 G% u) f3 Z3 _) u& g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 a7 n6 K- J8 ?$ [6 x" Z' z! C7 F0 @
set i (i + 1)
% f* c& a. M% r" O, j$ ]]
9 J2 A4 }# D, b- f2 e7 ]4 Xlet k 0( b  u' [; u! Z5 ^. P. ?
let new1 0
5 `( o1 `9 x" t$ s6 W# Iwhile [k < people]
7 I4 q4 G/ D* z2 I" K[
" _1 o, N. E: e& H9 m4 C$ _" Q# m; Tset 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)$ F; E; `3 m1 ^# Z: ~6 R' }
set k (k + 1)$ y# l& j9 H' p0 P8 ]! |
]0 m" }, p% c0 _7 w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 Z5 U! P9 S" _+ W1 D# O
set global-reputation-list (replace-item j global-reputation-list new)9 |$ R8 q/ V- @, O* p
set j (j + 1)5 J7 r! h5 m/ G+ W: D, q9 d& l& U; k! B1 A
]
5 M& K6 ^3 M# a1 h8 N, Z$ a$ @end; w$ p. c0 B7 C* K& Z% s
5 @1 B( x) S5 O0 }& Q$ @

' W: i1 H* i6 e4 L5 [" x+ s' E  s( c7 T. z
to get-color5 U- k3 L0 a' p3 c& L0 O( E

: P0 l2 X1 f4 e3 X0 Q7 Q# uset color blue

# K/ Y+ |7 Z1 mend
$ G. x+ J. A# f9 H
0 G% I+ B. @3 t9 k& c3 f' @. q1 eto poll-class0 A- ^1 M$ @, n/ K+ X! o
end
( K6 H: i* y* Q' m* |# Q5 E/ g; T
/ T, Z' v% }8 e. X: y, \) d$ k# nto setup-plot1
9 W$ S  `+ _6 q& }. f. @- `
3 ~) F( B3 c5 A8 E! u$ aset-current-plot "Trends-of-Local-reputation"
9 `1 X% a* l* I$ i8 F" B- n4 n" B

3 I' B' X5 E% ?$ X9 Sset-plot-x-range 0 xmax
( g3 P  n' q7 o5 A% B$ w' C
& U: `0 @: }/ q5 n3 d( Z
set-plot-y-range 0.0 ymax

/ ~. ]2 w4 I3 ~8 N2 A7 wend  j$ }; S* u/ O7 g
" D( k4 o. q( q2 T3 V$ K
to setup-plot2: E1 e/ z" ]& I, W4 ~' `
0 U. Y5 |+ F- ]' Q# |0 g$ X7 w5 t
set-current-plot "Trends-of-global-reputation"
) E& b; E/ S5 V" C, @+ n9 z( c" r

, y$ V* q7 u- _  t4 b+ Mset-plot-x-range 0 xmax
" M. R( b6 ~, k5 T
3 O/ I  ~& j  o; a) E
set-plot-y-range 0.0 ymax

2 n6 b8 S: s0 c4 W0 gend5 n7 d% ~; V0 q! D2 L- k# K
$ }; A5 X- H+ u% v/ f2 n
to setup-plot3- e8 e0 y& k0 d$ Y9 ~8 p5 S

1 N) \& x$ `9 W3 {5 k4 J# Sset-current-plot "Trends-of-credibility"
' }  n; w; ^9 p$ e$ X

3 @/ x1 }5 t# [3 z5 ~* {5 T$ Qset-plot-x-range 0 xmax
- O2 R! l* q1 O& G( A

& p# W) r. N% R  v" f, H+ ^' |set-plot-y-range 0.0 ymax

1 x+ u5 N( z, N3 q; P/ |. |) k8 kend/ y' b. l1 J# h' Z! N, A
3 D5 @7 ~( C4 r
to do-plots
$ {. A# G, C% yset-current-plot "Trends-of-Local-reputation"
# [" X8 O2 [- Q! D4 c4 h6 aset-current-plot-pen "Honest service"6 f7 R+ {- m3 R
end2 g5 G8 ]- w4 x. E

. {: [  I4 x% f6 B2 Y8 P[ 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.
3 q- Z1 a1 b. I2 I: |; O5 J, [3 L- q7 S6 E6 Y1 [
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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