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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:
7 R& d8 g- h, a8 c: S( W% Jto do-business
/ i$ s* V1 d  X! s) a. D% s# j# b rt random 360; i* a- t# D) X
fd 1
6 b3 X8 a! p# R* U/ g" h ifelse(other turtles-here != nobody)[
4 L7 k/ |/ X5 q5 k   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.( s8 q2 |1 L% O5 t6 G  L. ]
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: R( ~- W7 x! C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! R0 p8 ~+ }1 [: X
   set [trade-record-one-len] of self length [trade-record-one] of self" [* [0 r' L2 M$ u5 |
   set trade-record-current( list (timer) (random money-upper-limit)). a+ O6 |( H" s" H( l
& n8 o( ~6 [( m: k
问题的提示如下:' Q/ }  T0 y+ }: {

2 [0 `9 Z% W' J. _, jerror while turtle 50 running OF in procedure DO-BUSINESS- H7 R7 C" {: }% c5 _+ w3 m8 b' b
  called by procedure GO* c& O7 t! k- @' H' s
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
. q8 P* [4 Z9 q+ _1 |1 X
(halted running of go)4 U0 x* x& T: s0 \8 q8 r7 q
* J5 `6 e7 k. d# E
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 s7 A% R  E9 f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 }. ^$ U- ?4 ~; Y
globals[* {3 _  {% C" z8 i
xmax1 T4 k. J# e! X% }# t: C2 j
ymax
# X4 K/ d/ @3 m7 B% o2 H! C+ Gglobal-reputation-list* F% W1 G: s6 p  u: c6 P
& V) S* J% ^2 b) O8 k
;;
每一个turtle的全局声誉都存在此LIST
; Y2 q) @4 @6 d7 a! V  }credibility-list
! L' i. f$ K6 {* H;;
每一个turtle的评价可信度, K3 S, T: I8 m' x3 F. f
honest-service& l; s3 v7 x0 @, ?' J
unhonest-service
" j6 n7 _0 @' f# R& Moscillation* I# e" Q' J% f) d
rand-dynamic5 l4 t' z" J+ {
]- n/ g6 |# N: k6 x" ~( q0 g8 |
. }4 D$ }$ k/ J/ T, K
turtles-own[% {# q; w2 L* l6 T
trade-record-all
" ?) _1 A8 o9 W;;a list of lists,
trade-record-one组成
9 N7 x1 }6 G8 ltrade-record-one& ]3 Y! o0 j9 E; ~: l. S3 [
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* n/ q( p1 X/ u2 Y% [
5 W0 j( D/ O0 x* 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]]
2 f. `! ?+ r/ i% C4 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]9 ^1 Y% X8 \& V8 x& s. S; ]- i9 C
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
7 w: z* `) t) I' M( B8 tneighbor-total3 v  U' G3 |5 W3 w7 u$ F' K
;;
记录该turtle的邻居节点的数目
5 S0 y: E$ y3 D& Ntrade-time0 p( d/ J: `' H2 L5 D
;;
当前发生交易的turtle的交易时间
* D" @$ C+ E; c$ V5 tappraise-give+ N1 S3 Q9 M% y: h
;;
当前发生交易时给出的评价, o8 O$ G8 D; c; ~
appraise-receive8 q) f5 [0 E1 E* M# j3 f. ~
;;
当前发生交易时收到的评价
- I  a1 i$ j' g& h2 j* gappraise-time& ?; v' G2 m; n+ C
;;
当前发生交易时的评价时间" Z1 u) `% X. e! T  q4 A
local-reputation-now;;此次交易后相对于对方turtle的局部声誉& v- B; Y7 Y5 D8 H! Z' I
trade-times-total
1 h5 e: P/ v' ^6 P' o) Y;;
与当前turtle的交易总次数
% T9 e, _) J5 B: b* qtrade-money-total7 O2 c- n# w; R- f: L
;;
与当前turtle的交易总金额* P) d7 M" i9 G# h- N
local-reputation
( B; j- P6 k2 U' J0 Iglobal-reputation
. `* O, M# R. s. v: K- y' ecredibility
  k4 _+ a: O7 q, ?! h;;
评价可信度,每次交易后都需要更新1 T& O2 M0 L# y' ?" n9 T
credibility-all
# P6 v( t1 M1 e5 Q9 z# H, Y8 ];;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 f6 |* i4 m8 D% j& T; M* p7 F
1 R6 r# j2 {* e
;;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
3 m6 n  j) {% }9 q+ Y5 l4 l$ rcredibility-one
& y# s) ]/ V* r6 s" k* K;;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
# q  K/ v$ y6 Oglobal-proportion- v: C( t( ^4 |  ~
customer" u) s" x( ^1 f7 q5 x& o
customer-no
4 n0 e* w! ?- n# L5 I4 i# Y0 Btrust-ok
; V5 O4 t4 T$ Q3 Q$ g; ?% dtrade-record-one-len;;trade-record-one的长度: F, T7 @2 J' X) F
]
8 ]' U1 p6 y4 X: _  \. O8 a
. f* A" P2 e  d, |( P5 @;;setup procedure+ F: F- w7 L( x  n

3 z- H6 U. i& u: o) h  Eto setup1 u1 e4 u# J, t, K- v3 n/ [: T; B

. O" |+ Q$ N* L9 wca

3 A7 ?6 f$ V4 k& i5 q* N4 L( p& e$ s$ x% k: q. |
initialize-settings

% V6 y$ W6 Q/ R3 D( o; v; ~3 W+ ~6 }! ]+ z# r
crt people [setup-turtles]

8 t4 ]* R0 u' M" @1 i
" q0 B' H8 f- `5 c4 ?! `  ~2 Oreset-timer

9 Z/ ~6 T2 p& g# y0 H. g! J: F: c) n: P( V) ~* i7 l5 Z
poll-class

/ j) y9 j: o4 J& t/ E
" e4 n5 o4 m; U0 F" Asetup-plots
3 m& a9 y6 u; e7 Q" l0 M

: o8 G- b% [. L& H% Ddo-plots
, w0 q0 W- k& x; W, r
end
8 \; X% R, P9 T3 G1 Q& d8 |5 {8 J, x( X+ ]$ ?* ~
to initialize-settings1 A' h6 _9 N; f) H% B9 e
8 W- _9 _; S6 t5 P
set global-reputation-list []

' X" Q* o8 m0 {% }6 V! c
3 a4 U) {& w! E( p8 \. Wset credibility-list n-values people [0.5]

& a9 \" q+ y6 `2 J  Q) c5 X+ `: q* K; U8 B
set honest-service 0

( ?% q* d# O5 Y3 q9 M6 _. B" ]( M6 v% w( Q) z  D* E+ k/ {
set unhonest-service 0

1 @2 _0 J& Z& W6 u# u
% x# Z1 s1 u7 `' ]  F$ M0 A) `6 P$ Oset oscillation 0

) t/ g( |3 ^) |8 y! S3 D. F. Z) P8 r) Q: k; S* d- D7 X  W
set rand-dynamic 0
( d( C+ x; P. d: P
end3 @8 q/ |/ ?' B! Z, M" U

8 l8 B$ }2 n  d$ Q. y  f# t4 P( _to setup-turtles " V2 B: f% c( B9 k& }+ j" c1 K2 o; X
set shape "person". z& i* |6 k# E9 H1 }
setxy random-xcor random-ycor( ~6 P, W' E+ K# }- Q  s, Y
set trade-record-one []
& t1 S7 Z! _; w6 X8 g- o) j# b
5 T/ K% O3 E' Q+ w& P' z6 P
set trade-record-all n-values people [(list (? + 1) 0 0)]
& e' z% m' h8 R* _$ m& O0 E
5 |8 s/ k( z: C. Q- t
set trade-record-current []
/ w+ ?/ E8 c6 U. ?set credibility-receive []
7 s3 x6 e5 K; ]* l  q9 ?# {# \set local-reputation 0.5
. y4 {) e. o) x8 kset neighbor-total 0
) [" [$ {0 L7 X0 a; dset trade-times-total 03 \2 D5 H0 R) S; R* c
set trade-money-total 07 l$ X1 x5 j4 V2 K6 m/ z- j7 J( N
set customer nobody
- x2 N; y* a5 n% q% ~1 fset credibility-all n-values people [creat-credibility]( \8 Q0 ^4 E: x0 {
set credibility n-values people [-1]8 {% Y' K4 J% y: r
get-color& f! k, N1 {  t: K0 V4 p' A+ C& X

2 S6 w7 z( U' K0 l# I0 i' Tend* M  u7 ?9 q/ L; W
5 O. }; q, S9 B5 \* l/ y! |
to-report creat-credibility  S" D/ Q# i( \3 h$ m7 H  C; k
report n-values people [0.5]' H# m& N8 d4 s8 y
end% `- ~. E9 T4 j7 G: v0 \
6 }4 _; ]( m/ n
to setup-plots! B* P5 [/ P+ f* n+ P

  S. B$ e/ m* D$ W2 E  Y, i& Vset xmax 30

4 }! v" s, t6 G) S; A8 F
; q" K3 Q: p7 y  [set ymax 1.0
9 ?0 J% ~! W( J

, i  X. \" H4 [7 G) rclear-all-plots

* J  G9 s  e: Y8 ^8 V$ `3 N8 v  i: o% R2 e7 K9 |
setup-plot1

8 {1 s- w' s( O3 |, A. P  e/ K* r8 C9 f3 n9 i* G
setup-plot2

6 V  N7 `8 e  D- v" t& [" y
. r$ p+ P3 A! k( w1 zsetup-plot3

" Z! R4 J! G3 Q$ gend
0 N/ T, P' d# j7 _+ z+ b
5 k! @" \0 [: h- P9 l. s, ^;;run time procedures
+ S$ P! r- |  G9 x4 R' b0 O8 u$ c. v0 r: G, X9 R
to go, i) f: O+ w; J

" U3 c4 e; O7 G$ n/ v2 r1 o( `( sask turtles [do-business]
( T5 v. z3 Z* C1 `1 B- w, H; o+ k- S( O
end  V6 s6 n5 o3 f/ V' K8 K9 b

3 t6 |0 W) G9 T& Y8 \5 M( Wto do-business
" q: @2 b3 _" _- U  R% m9 @1 C" C
: _* X/ E6 B2 q" ]9 [: }1 w3 Z
- Q: ?) r# }7 |" U
rt random 360
# _$ _& d, r, G3 F
: _! m7 V# `0 _/ ?5 E* \8 c0 i
fd 1
  Q3 ~) |; e/ g3 H/ N/ W
0 S' W% S- g; ]6 w
ifelse(other turtles-here != nobody)[
8 o8 b: T; l% h9 ^- D4 c) j
- I. R3 Q6 g; P' S: n2 U8 w
set customer one-of other turtles-here
4 t% J6 P" o: Y& t

! _% D2 b4 h" S0 M: X;; set [customer] of customer myself

- J9 W) v9 L$ }7 \; [! ?! I5 o2 g: V$ R8 F: _% D' j) v- D8 k7 c
set [trade-record-one] of self item (([who] of customer) - 1)
, ]7 v2 V( L5 @: }) \' T[trade-record-all]of self1 D% Z4 v# b+ U) N! K
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* r6 B8 Y8 n6 j& k4 M4 w; y6 x, d1 ~  ~. L9 k9 l# e
set [trade-record-one] of customer item (([who] of self) - 1)# I* Y& [2 |1 U
[trade-record-all]of customer

( C0 g. L- T+ v7 ?; T8 c% J! J/ W8 C! z" h9 W  \! Z: M/ ]
set [trade-record-one-len] of self length [trade-record-one] of self
+ X+ h4 f8 q/ {1 K" F  p
' h3 e: W4 O  @/ J: y' i- B8 ~
set trade-record-current( list (timer) (random money-upper-limit))

  f! v! i6 r% [9 N5 B2 E; [. N" T' \0 U6 R0 ?/ ?" i8 v/ Y3 ]3 c
ask self [do-trust]) ]4 o. G, }" v! h, ~# m0 \
;;
先求ij的信任度
4 s$ J" F" e0 n
2 V! W& Y; o5 X9 }if ([trust-ok] of self)
, u$ R, S0 J3 i" ]- @9 o# a9 T( @; _;;
根据ij的信任度来决定是否与j进行交易[
4 _% `4 e% Y) Z& z  G6 z; F4 lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ l) @" U) G. y0 j9 P7 r
9 Q! q+ N6 S. _4 K# T1 d[
" m1 g2 W; u5 H5 q8 h4 i
9 B) o9 }/ e5 A: }! @& v, c
do-trade
1 t" \4 r7 I6 G0 o, ?7 M4 U* N9 D
  R/ R4 V( J. l& n
update-credibility-ijl
/ Y$ b2 X6 ~& b% w' i2 T$ I# N3 j
. _- o( L0 b1 f  D0 N; h
update-credibility-list
5 `3 I- G4 b# D2 ]8 D3 g
. [0 J. j& K9 h. ^$ E, X. Q8 k

" A) s' P; L' y) q. [update-global-reputation-list
$ o" [0 J. C1 U4 G: N' ~" D
, H$ T2 O1 r2 x9 W' _& M8 v
poll-class

& `1 x, ~: b% u9 p
' Z0 j. V8 q2 ?1 qget-color
8 N5 ~  F7 L- P  M$ w9 k$ H' V0 \

* K6 E) \. V; c]]
) G# M! @, h' i# @7 a/ u3 ~1 S4 k$ ]6 u& m  @9 I/ W7 n3 F
;;
如果所得的信任度满足条件,则进行交易7 A% Z0 A4 Y+ R( C

* Z7 m/ H% I; Y, [+ U- I6 M7 ]' g9 q[
- R& g+ v; t, Y0 k" B

3 X5 E& j; A. R) Srt random 360

2 Q8 @; p5 n7 z: u3 U; k4 j6 R/ A0 @" g9 H) [* n* W5 }
fd 1

+ W7 e9 ~( r2 Y, d- r; P- M6 g
5 q& _' V- U9 K]
$ C0 r1 T: p/ d$ _# b, n+ h

7 h  q/ P- }2 Zend
+ `% S. U/ R4 H5 @; m, L
: G/ p% I# d* D) q; G; E/ n" V
to do-trust
& O% O0 m0 B$ t  d1 m0 X4 cset trust-ok False
8 n  ^7 G& |$ V7 M$ O
, U" A, o+ y+ c' o

& C& c6 I( U: F- Wlet max-trade-times 0: M4 Z* x! ?0 {8 B
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. \3 G6 L+ \7 e2 j& d1 g/ \
let max-trade-money 0
# Y( K9 `/ w8 `2 G1 l- Eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( e' J  f% @9 S# r
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  Q$ w, F) f& Q( t$ A
7 H; ~/ t4 G8 k. J  f5 e

  L4 h  q8 R- B+ M* ]get-global-proportion
) J' _! _& u+ P* t+ Blet trust-value) Z& |; c* D5 O
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)
) e0 }! M% w% q1 X* ~
if(trust-value > trade-trust-value)
1 B: X/ I) \/ \; ?! d) f' P0 r[set trust-ok true]
+ A/ S3 w% [2 ]end
( P0 O) J! C( K  g  T, f( B7 N7 t; q7 O9 \
to get-global-proportion
6 K( R  D4 b0 R% pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). \$ K- s- A. C% N
[set global-proportion 0]0 }+ E& H" j& R' b7 N# M. k. Z
[let i 0
  \2 K1 w  U1 Tlet sum-money 0; [: E& Z/ C8 w  B. [
while[ i < people]
, C9 M: L5 e2 O" C. E* Q[6 E+ k0 ^+ Z8 o* C" I
if( length (item i8 d$ e: f+ i5 ]( n8 j+ s) D
[trade-record-all] of customer) > 3 )

2 C$ l8 G+ f) `/ s0 o( |7 C! Y[
" p) u$ T* a, h0 x' qset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, S$ e! o9 n6 y5 Y7 a. H]
  e3 [# @: W, s: T]
6 A. B; s  `  s* ^5 ]' V+ flet j 0! z1 M5 ?% H. z3 e
let note 00 N% N2 L* l2 a/ V# d5 O
while[ j < people]
5 c) _7 O/ G' ~( F[
. t% X( K/ s* Z: ]. Eif( length (item i
- ?" g5 q0 v! H1 B( e- X[trade-record-all] of customer) > 3 )
1 y8 ^( ~  [2 K% D5 r
[
# g5 r( e" K6 Z( S5 U: Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; z# r& w/ k3 K" @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( Z8 s9 ^' F2 z. n3 Z+ T0 }
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& P' \: L" [0 E]$ L) A4 C$ x9 K  k+ H8 T& e
]! |0 O" O( f% P
set global-proportion note4 v2 O& }# s9 v* d& N8 f, W
]6 h3 r8 ]: C/ @  d
end
, R  N, \3 F% f7 _" i8 @! [; J( F$ P1 A  f! W7 l- ]! q" @
to do-trade7 R2 k* C% g; K
;;
这个过程实际上是给双方作出评价的过程) ^( F2 R6 p# n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 l& D  c+ A/ D* c0 T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* ?) H; j' e6 K8 f+ n% j9 \set trade-record-current lput(timer) trade-record-current' {) @  ]8 ]! ^7 ]& ?0 f
;;
评价时间
# x1 Y6 h2 b- Lask myself [
4 j, g1 Q4 a3 Q; ?/ k: W4 supdate-local-reputation
2 t7 Q2 @7 _( J% o  X) rset trade-record-current lput([local-reputation] of myself) trade-record-current
& @6 x! i  s0 P]
% G" f" x; _' |& V0 }1 p4 u! Gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; n7 j' ?8 D, ~% E& ]! F
;;
将此次交易的记录加入到trade-record-one$ b, _  j: t6 l
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" B9 Z/ L- S. ~1 O. blet note (item 2 trade-record-current )
, m9 _" z7 x% R6 t8 p3 qset trade-record-current
! @. q# U, v7 ~8 W# ]) `(replace-item 2 trade-record-current (item 3 trade-record-current))
/ j% I0 e/ m% U& ]1 v& f, Y1 H
set trade-record-current9 Q) j8 Y! M! Y/ n( v0 v
(replace-item 3 trade-record-current note)0 m! s! V! o: V' H' R& J% r3 @

  Z) s3 H3 H1 b$ V( a
2 B' P7 r; U) X- z9 w/ g4 Y
ask customer [9 T9 v3 h1 i8 U8 Q2 x
update-local-reputation
! |; e3 ?. |; y+ T& J# B5 Mset trade-record-current
- y( [' L, Y( i8 A; `: O- y( Q9 D(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 b) q; @0 b& s- S. G
]0 S$ r/ d  u4 I! b
+ |7 x8 \) H% Z* l0 ~4 Z/ T

$ m9 w6 c2 @3 s% z- S. G) e8 oset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* N. B5 A) F; o2 n/ v
8 ]* L7 V) H' M. `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& M: K+ @. I4 X8 }4 U;;
将此次交易的记录加入到customertrade-record-all8 S$ x- ~" i5 m# z6 a4 j
end( K1 e3 F4 T/ W

/ X3 D1 E1 e# i8 mto update-local-reputation
' |* @) y. k3 F: m( r- V: S  Cset [trade-record-one-len] of myself length [trade-record-one] of myself
0 w# O( ~. G/ Y& i( j' @( H" o# u! I/ l" b8 ~+ r
' R4 O0 ^0 `8 k1 D9 e
;;if [trade-record-one-len] of myself > 3

% ?  l# P' ]9 S0 D- P+ b! ^update-neighbor-total
: t4 ?' R  s/ n2 w& T, v;;
更新邻居节点的数目,在此进行
( r( x3 s3 `$ T+ wlet i 3
9 N% k6 g9 ^# A8 P  p! _let sum-time 0# D' d( O) }2 w) ~! p
while[i < [trade-record-one-len] of myself]
0 z1 y3 v1 e& @- t2 \[/ F* M4 v0 }  X4 {3 x  V
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" v# _0 G6 ?/ e% G, fset i
. n) h+ ~% c, o& G- k% }1 N* a( i + 1)

" C9 x' K8 W( y7 C  S5 b]
# X) l& K% M6 d* H3 X* q3 ulet j 3& i. R, I5 ]7 j9 S
let sum-money 0& \$ H5 x/ ]) t) C- V; a
while[j < [trade-record-one-len] of myself]! e( Y* e% P. R& _* P% @
[, e' X; U/ x( ^3 z+ w; H$ e
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)
# k( J4 P( M- _9 W3 w" R" zset j) G1 `6 e  K* @* U) U; H6 n' @
( j + 1)

# }# C) H% `4 ]( z) b! B# ]]& _/ U! a0 B1 B8 ^$ G& m
let k 3; h4 Y- O' X2 c8 K$ j
let power 07 r0 ?, J6 C5 S* H  P
let local 07 Y$ _! c1 M9 S2 q
while [k <[trade-record-one-len] of myself]# U* {/ y4 M; r' n5 H% P% ^# l: q
[
/ N, W. t+ d, J, M+ ~" Q, zset 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) % W1 Q: T: o; U7 N: X5 D
set k (k + 1)9 P! d$ W8 S) P2 v# p0 A- G, G# [6 ]
]9 E, q+ e* t' w+ W2 c$ s- }+ ]% @
set [local-reputation] of myself (local)1 m9 r7 G. {# F, |% l
end6 E4 j6 S4 l# A! `

% Q; j" d7 p9 G4 d! E3 B. r. Qto update-neighbor-total
2 {' v0 i& f, ?) u
& |/ |; p1 U$ s% k9 T3 Pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# X! D  L! ?1 r2 c9 _0 A8 Z) Z# F8 N
, U" y1 j! |& L

2 H' \* ~, m( B8 ~8 rend
  z3 h6 K4 v2 B, Y5 ]% L% d
, n0 I& c* F. c* }! sto update-credibility-ijl
0 S5 n- E2 U* B& X# W6 C0 ~3 d( U! G, A$ T) b+ Z/ u& P0 I
;;
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) M/ T3 k5 C) m5 W! \7 E) S" S1 a
let l 0
$ O* R+ q1 G6 M; u; b( l) Dwhile[ l < people ]
3 Y6 W1 j: {! U4 V* @& v;;
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
& I" a5 R8 P8 k# i0 r[
7 O. p, h( K/ w( Q# R+ z! h/ zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer): [, {# f2 K. S, w' K# R+ k
if (trade-record-one-j-l-len > 3)
& e9 H$ B: ~, o[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
9 {0 ?- j0 G5 w! z# ~$ Zlet i 3
" Z5 b9 v6 w/ L, z* Olet sum-time 0
5 y8 N* L- f( q0 ?0 Z1 jwhile[i < trade-record-one-len]
# O" W% ^+ Z+ w+ p3 U[& \$ u4 I! |, v& U
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 X+ P& r0 d5 k* G" b+ T, X
set i
/ a+ H* I" W+ ]5 ?6 H* @% q* j( i + 1)
/ L: V: H/ j, x; N  I  v2 s0 Y
]
. n7 M: [: c' f+ {let credibility-i-j-l 0) p9 x/ m1 e2 X9 g$ j/ `( v5 h
;;i
评价(jjl的评价)
. p+ j* ?4 C  _% U9 y& \3 \" `# N7 klet j 3
; ?4 i9 W! Y1 m+ Q7 W! M9 ?let k 40 D$ N* [% ?5 U; y$ q
while[j < trade-record-one-len]
. }5 M9 l; U5 g/ O% G& \, `. [[
5 O3 w* v# v# t9 s' b- s2 rwhile [((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) X- F2 Y2 o. b* e. @
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). l% s( f! o7 k1 g! s+ w
set j$ `+ t# t* s2 n, |* i: o9 ~
( j + 1)

; K" |- h0 j2 |. @]" e' w, @1 ?- \  T
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 ))
# H1 t3 [% R* [0 O  f* k3 ]; Y* `. j+ M' q9 y# ?  s0 D: q
6 @* h8 M3 M: N; {$ T& U' A
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
" y9 I( `$ I, S3 j1 t;;
及时更新il的评价质量的评价+ Z4 X/ ]- H4 ~. i* m- x
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& |$ h& |# G/ B! h3 ?
set l (l + 1)
5 `- S, s. J6 R* \- \]
) h) {5 @9 S1 T* Gend
2 A  s& a  }! T5 H. i' g8 z/ L' R
to update-credibility-list
+ b' G" A& R4 J' N! Zlet i 0
9 W# d- ]/ C. Fwhile[i < people]
1 J* P8 ]- U1 ~( q& {+ ?1 O[
) e2 G1 `/ ^, r* Plet j 03 U% n& b( u" Q4 t/ o6 n& H  o8 k
let note 0+ f& I5 e' l& I: v
let k 0
' Y5 f1 L- q! |7 `9 D/ y;;
计作出过评价的邻居节点的数目2 g6 W! H6 v6 X7 M$ L9 s
while[j < people]1 O! m# A- Y( b, ]/ t: K- [2 l
[
  n/ O9 v0 S+ N! Y$ D0 oif (item j( [credibility] of turtle (i + 1)) != -1)6 \$ r; f. X& n7 Z4 ~" I$ z
;;
判断是否给本turtle的评价质量做出过评价的节点
0 q7 l! j: v0 v3 M4 \1 D1 @: G) e[set note (note + item j ([credibility]of turtle (i + 1)))
8 p; X+ ^1 n. q( j;;*(exp (-(people - 2)))/(people - 2))]
+ c' T  q* ^4 r/ ^$ l* T& b; V* l
set k (k + 1)
" M8 O: p) Q5 c' S]
. X7 l" _* K: f( a) m- Jset j (j + 1)
% i8 G; }) }4 S2 _]+ z# _4 G6 L- L% y" ~2 i
set note (note *(exp (- (1 / k)))/ k)4 M9 ^1 [  K0 U1 q
set credibility-list (replace-item i credibility-list note)
: s6 V) J) g! @+ Cset i (i + 1)
7 E6 E7 N! o" u]) f! T6 B% b5 G$ {8 `# W) ~4 N
end
; ~& p3 p6 e& a) o! @6 \: P5 ^# U
to update-global-reputation-list" x8 J* K# Y1 G: c$ y0 \/ H
let j 01 S. Y) E, c3 d# P4 `. K1 n
while[j < people]
  ~: \" D/ ]& E7 d1 Z7 J, X1 Z[) v  }, b# w8 z% _9 b
let new 0
9 i, x8 Q2 n1 Y; a8 n1 P! ^: @;;
暂存新的一个全局声誉# o+ k+ U& _% u# F6 X& S
let i 0$ c& G8 q2 z( Y( |7 q6 X' w& A
let sum-money 09 d9 G! ^* X4 a1 i" T' r( [
let credibility-money 0
) ?0 E, [; F0 v: x0 {while [i < people]7 z* B) H  }, d. c2 T+ z: D3 G, H
[
+ f& A+ D; D+ Y9 h4 Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) A: k" z/ h8 X  t
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' A: k3 B1 x$ k8 N$ F/ a+ v4 ~set i (i + 1)
% M1 m% F: M" h0 C1 z]
. ], i) Z' i6 \% y8 k6 J( o. {let k 0+ v1 M0 B! s, A  E, D8 w0 d3 z2 a
let new1 0
! A. d0 B( d" U6 E5 Q) uwhile [k < people]; Y; ^& d6 M! P7 c
[3 z: K3 J( Y0 Y0 ]: k
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 j# ~! h$ o, }7 X# r! t9 r
set k (k + 1)
5 g6 l( G$ Q+ c' x" a7 X]
8 N+ x7 w8 s9 H4 E  ~set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# K$ X" E0 O1 _$ o' b2 X2 pset global-reputation-list (replace-item j global-reputation-list new)
3 C( d  W0 C. K4 x/ P8 l! }set j (j + 1)' S! s4 T; T* \5 r( w2 P
]
; w2 ]" H1 P- E1 _2 P( P" Gend
$ B! F) f* h- l' @3 ~* z; v" B2 y/ {2 w: `9 T  b: Q

: q8 L( p3 X# {
) P' v- @& D) N4 Ito get-color
: u' l; L- G: E3 ~" o. N6 E) M" c/ _6 \  M1 Y
set color blue

+ }' h* e: O, @" Oend. w: w6 t( M$ j: x0 C: S! c

/ t# F  P/ q) X4 y: C- i8 O0 Eto poll-class
& q& n& E$ ~0 [7 B' {) d; A/ P# Oend0 w# P6 A( i8 H3 K  X0 u
' Y6 K7 r$ g: n. N/ Z
to setup-plot15 y& D& _/ P( q# l
9 [" c1 Z8 @; N$ w
set-current-plot "Trends-of-Local-reputation"

) e4 Z9 W7 v. I& R. K' K4 ?0 E% Y6 J) _. r$ L
set-plot-x-range 0 xmax
. x/ u, f6 }3 t' h! A* f) c; @. g

! d( r, p: _; w4 m! H% X' d8 U6 xset-plot-y-range 0.0 ymax
9 g! O' @2 v! C/ a# E# i1 t
end/ c# p; c  ?0 a! A

8 b) r8 e7 a; @& w7 F% ]# zto setup-plot2. e9 x" k( t) W6 i2 y% `
1 R! L* s  K1 Y6 u1 ^7 X
set-current-plot "Trends-of-global-reputation"

  O& \: L# G) x- o
9 s/ ]$ D1 R. W9 t5 ]' cset-plot-x-range 0 xmax

* H0 G% ~# r, Z# r- p* U: M& d; u2 H) m5 t) s' C
set-plot-y-range 0.0 ymax

6 `% u) q* O! o* p3 s  Qend
4 _, V5 x3 D3 Y; d- M* x8 t; o! T1 j' I
to setup-plot3
. E+ s+ \+ m3 t( ^* r- c8 Y- o- |+ h8 t: ]* q% w
set-current-plot "Trends-of-credibility"
' g) g6 N1 _8 y
3 z" G" E6 _! @
set-plot-x-range 0 xmax

( E. a; X& w4 L: Z  x+ P0 J9 }9 |/ t' h
set-plot-y-range 0.0 ymax
9 s" w- _1 [5 M% H: C
end
) y- q. V- i- i  c0 A: y; w8 x/ ^+ @6 F6 _' r8 b8 ^4 o9 _
to do-plots
9 Y- m8 x) r7 I2 k' _$ Z* A$ Nset-current-plot "Trends-of-Local-reputation"
+ |4 w3 g2 C1 y- J1 T/ Sset-current-plot-pen "Honest service"
# p! k, o) Y, S; u' nend
3 z3 j1 F4 L8 y1 T  |% s' ~$ G. r3 u
[ 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./ ^' P% ]! J) b" F0 v

0 h7 X. Q3 e1 h2 c8 K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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