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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:( e" E4 r3 g- G8 _, p+ }! Z
to do-business * d, |" `4 ?% b8 k# o( ~+ ]
rt random 360% Q% b6 w  E$ `5 N% R
fd 1
/ M( ^" g1 c) H$ s$ A' E* w ifelse(other turtles-here != nobody)[
5 \3 ]5 |5 T! Q6 S* 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.+ x5 W) N8 ]( q1 _3 |
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . |8 P, y6 u' ]9 g0 F
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- Y2 }( N- q3 |9 }; A   set [trade-record-one-len] of self length [trade-record-one] of self0 r- A' T% S$ C( g; k$ K2 ^
   set trade-record-current( list (timer) (random money-upper-limit))- t; }- A$ _" p. L: e/ G) J9 z
$ Q% L# ^$ [0 H
问题的提示如下:0 ]4 y* [- ?' N0 {2 R7 N" K" C% h
+ n. c- B4 [: A5 i0 e
error while turtle 50 running OF in procedure DO-BUSINESS& m- a/ }' U6 g8 l; ?& u, B
  called by procedure GO5 B: \! r2 P2 |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* @5 s, u2 t' N; ~
(halted running of go)
; g7 X" u* R9 d$ g
- j% x* s8 I5 @# \  V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~~
/ n/ L# W& `  X$ ?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' _4 i9 p) v: ^) Z% A7 r- J
globals[
  s" i2 V' Z' F0 X, _xmax; N0 F2 }# s0 u/ Y9 b
ymax% I* x8 q1 s: z% \8 H3 F* s! b0 O
global-reputation-list/ }! p" |; O$ m) {$ ]- }
3 A6 t, p& T* C
;;
每一个turtle的全局声誉都存在此LIST
4 R- h/ ^) L( y& G. O# e, Q5 e' ecredibility-list0 Q* k* v1 U2 g0 ?& X+ l
;;
每一个turtle的评价可信度
5 X6 i. \) A* U' ~  O( |/ }honest-service! M7 i" t8 s) U7 k. @
unhonest-service6 l! H1 _/ s( _% u
oscillation
" W. f- L4 v( K1 J# arand-dynamic  }' T; @! S9 c( m
]
( M" y5 o% f0 U2 _1 B
3 D& Y/ M4 _: m$ Q+ [% dturtles-own[" N( [3 Y& r: X# L% r
trade-record-all
3 [; D; ?, V' G1 V;;a list of lists,
trade-record-one组成/ N7 y# _3 [+ v7 U) r/ b- s6 w
trade-record-one
5 U* C* l7 m& C6 q7 l;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 V9 l- B9 V  {1 e5 X3 M9 L

# Z9 P: g$ {2 `( u$ J  o;;[
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]]# \! O1 ~0 a- U
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]
7 s7 w# y) I8 z' R5 ]& {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list9 V2 B# R" |) M' ]
neighbor-total3 G' ~- U; [/ a! j
;;
记录该turtle的邻居节点的数目
- A) t4 E# Z( O* ^trade-time5 z! z% K9 c" S: }
;;
当前发生交易的turtle的交易时间
$ i# A. a+ b, Sappraise-give
* S, Z4 Q" T' F- B8 U8 O0 T;;
当前发生交易时给出的评价1 [# U1 N3 B. L3 P* q; c
appraise-receive
6 Z4 Q  n/ O1 ]- M9 J;;
当前发生交易时收到的评价
6 x' [# a1 R( g# \9 s+ F$ rappraise-time
6 V, X) x- P5 X;;
当前发生交易时的评价时间9 _7 t/ q5 Y1 B' ~3 O
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 ~! H. S( v* |4 m: U+ K8 f( w9 mtrade-times-total
$ Y! w* i- d, e; M- a+ w;;
与当前turtle的交易总次数
. D9 a3 p1 j7 ?6 c0 z$ \; vtrade-money-total1 a( {* B* w$ }, P& ~7 Z! H4 }
;;
与当前turtle的交易总金额
. z' q8 V+ B( q8 R) ylocal-reputation
$ Q5 D) M6 Y/ u' Nglobal-reputation
5 C% q. N& C! M! L9 N# \$ @; v" Ncredibility% z& B" p3 F6 z5 P, a; C% C/ L: O
;;
评价可信度,每次交易后都需要更新% R( O$ _: ~- k) E+ g- Y9 o) Q
credibility-all. ?% v) N* u, V. O4 f
;;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, `1 _- g6 c( Y7 B6 e; Y  E
/ l3 X! M1 A. R6 u
;;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
* M: k1 Q6 k) u" ?* C: scredibility-one
! P& X# J  k: N% Z4 _0 y$ E;;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
% r+ }  J+ V& t' s; R: mglobal-proportion% J& R0 {7 H+ k* k4 @
customer
6 h  M' k. b5 A  d! J% x, p- Icustomer-no
, Z, y& I) p' T/ A6 d5 H; \trust-ok
5 [: Q$ a- J2 Z1 c2 x2 ?trade-record-one-len;;trade-record-one的长度# N3 ?$ M& q) s) }4 {/ c1 i
]
7 b- n0 P/ ]6 a) I( [7 d: U( }  p8 X
0 m, x9 \. n! O' v' u; W* [( r;;setup procedure
8 f& X1 n9 ~4 C6 `; U; i6 B: |) b' Z4 [/ n% Y9 V
to setup
# C* }) j3 J" Y* M0 S
! z0 C2 b6 Z% Aca

' g$ k! W" B$ E) }; k: @5 t# e1 X1 o* E( Q
initialize-settings
" Q: H1 o; s% K1 M! ^6 ~7 h
6 L; g6 i2 M, U+ V+ P
crt people [setup-turtles]

+ O- G0 _7 N/ q- `+ f& H
( y6 l6 |8 _. o5 C3 Nreset-timer

* P2 E! b! S- W& n$ J* {# x( a. P: Q
7 T( {9 I  ^7 y' W) b! Upoll-class

  Y8 }$ T' [5 @) B# Q9 W; N$ |
setup-plots
2 r, @# o. Q* _
1 G" a. g" V% Z2 J- g7 X
do-plots
0 `$ I( }7 {! q9 c# G* K: ~; k2 m4 N
end0 F; o% Q' m2 e2 n9 h2 z1 Y

9 F) |* n; W/ w: n% V3 Fto initialize-settings5 R. d) J1 N" W/ t5 f4 B- R7 p

+ l# C5 A& P2 s! a! \set global-reputation-list []
. l: p, F7 D* s  \) j2 @* `* n% j

, C- p- L) B3 O: uset credibility-list n-values people [0.5]

2 w) J& J. v! \) V) g
6 M$ r+ _6 p2 w$ H1 t; jset honest-service 0
# W1 y* W/ m  T5 n0 d; v2 {6 V& m
6 g: U1 n: d# x( O  E  r+ l8 d$ G# q
set unhonest-service 0

- A- |0 y  y8 x/ K# z/ K9 v& K9 _7 K* K5 S( m. ^
set oscillation 0

# ^8 N; d5 S% Z8 ]3 b! d1 X( a  C9 g
: Q- t! x3 Z# d/ e9 b8 @# c/ fset rand-dynamic 0

, w* d& E0 L" j; ~7 eend
3 r) g% ]1 T4 B" _
& Z) n; f$ t7 ]: z0 ^* ?% p) Xto setup-turtles
) n3 E0 U5 {6 n! Mset shape "person". d* j9 {/ E3 V7 h  w. H4 v. f
setxy random-xcor random-ycor
8 Z( R8 F5 o* A( pset trade-record-one []5 d# D. A0 L: b- ?9 G0 j0 C3 b+ J

: t% p  N; j$ j0 x' I- uset trade-record-all n-values people [(list (? + 1) 0 0)] 3 X( }2 T8 G& @9 [3 w8 v+ T
* G; a, i+ q+ p+ f, m
set trade-record-current []
  [1 p, ]9 i+ E7 O# iset credibility-receive []5 O) u' h. q  G) L) [6 u' H8 \4 r
set local-reputation 0.5+ x1 n% E% D8 v& g, b4 n& _
set neighbor-total 0
8 F, o. c5 K6 B8 T* R  hset trade-times-total 0
- z7 x7 b( Y0 j' u/ jset trade-money-total 0
4 |) U& R4 p3 W5 |4 mset customer nobody
+ p# _, e: \/ f  s) v$ Nset credibility-all n-values people [creat-credibility]) d3 |- t4 R: J9 T) e
set credibility n-values people [-1]+ r7 e8 w8 n6 [3 c' ^5 C
get-color! R, t7 x3 c7 L  s

0 O5 a8 d6 c9 C- g6 ^  cend
$ s2 I4 r6 l7 ?
: c8 q; L/ a( ato-report creat-credibility
/ Z& i# g! b) x1 Sreport n-values people [0.5]
( t5 w" ^6 |5 _# S( |# w/ send
7 F3 r6 z2 b  {# }% |7 K$ b3 I! ~3 {. h3 L0 k( l: o
to setup-plots
# f3 Z; @2 H4 Q
: c; m9 H: T" b! I3 u- x$ J$ o5 qset xmax 30
5 p. ?0 B. U$ S6 O$ S* k
! ?- d; v" g7 m- \5 ?1 w
set ymax 1.0
5 P5 H- c! _) H7 }" R/ o) _+ ~

% F1 l3 D2 f  P" xclear-all-plots
9 I) ^0 m3 }. L9 K

) x; A7 \3 W2 gsetup-plot1
6 E) F  g2 y) q: D+ |4 l8 @

8 E4 o! l2 l4 y* z3 C9 csetup-plot2

1 H( V1 U) `$ B: P$ E. j2 g$ ?" h) e" }7 ]: L( S  P/ V. {
setup-plot3

( _( _. q* }8 O0 n( Pend
5 w% X2 |) o. E1 r0 D: P2 I' Q
5 u9 M( }% A6 O4 S- b+ |7 };;run time procedures
8 p9 V: ~2 v& \4 {0 z0 z* V2 m. O) ]/ G* o1 E" N+ Z5 _
to go- U* d" \' L3 p0 N0 i

* B/ |8 O  i' {; q# G: e& C: e! Dask turtles [do-business]

$ G+ {" C3 ~0 n. T7 Nend
: P1 e& ^# x0 F( C, x
2 h1 I& X- h2 V0 M- p3 M' Fto do-business
7 y& v4 J  O" G& t) l$ {' [

/ z, [. r; j' A6 X& G/ P, K  w+ z) e, h& z% }$ T
rt random 360
. Z# H8 j+ L  N6 L) u
( L, d, Q3 a, p3 ?. f
fd 1

% N% Q6 V+ Y0 f& s7 `" g: U3 L  z5 n9 {4 h$ p# C( F1 l1 A, i$ [4 K) [# A
ifelse(other turtles-here != nobody)[

3 y# O; x4 ~* V( o/ N* x& }% O: J& m' C) Q0 k/ b0 e. h, S
set customer one-of other turtles-here

6 |9 G$ h# {1 p' r0 p1 V
' N9 C5 \" i: t, p;; set [customer] of customer myself
% r* p+ N( K, ^
5 w- }6 \$ d5 M+ C) E4 g2 I
set [trade-record-one] of self item (([who] of customer) - 1)4 _+ `' [* Y/ ?" v  t
[trade-record-all]of self
7 l7 `' A3 j9 n& T;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# \7 h& f' j6 S6 C9 j

7 X. N$ T" }; g6 A" M& oset [trade-record-one] of customer item (([who] of self) - 1)& k3 M, r4 z% i
[trade-record-all]of customer

2 L+ f$ O+ U& ?
4 E/ [' p5 M* l4 \, Q0 E+ Zset [trade-record-one-len] of self length [trade-record-one] of self

2 {7 O3 v3 ^8 G) i" Y
; U- Z- S) o0 {& n' @6 `8 Cset trade-record-current( list (timer) (random money-upper-limit))

' R+ X7 J0 F2 C" p7 i, L6 L. \7 N8 a5 X: k, Y
ask self [do-trust]
, v. x8 Y, w3 D+ J, d9 I6 e9 k! Q0 F;;
先求ij的信任度0 S6 Q' M5 P# v
! m1 i8 Z! r  Q- o- g5 I/ d
if ([trust-ok] of self)
) o1 j( V$ I6 g( @( u, u( V! E# f+ n;;
根据ij的信任度来决定是否与j进行交易[5 @# V: \9 m( l3 l/ V
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 k6 {9 s0 J5 q, s  v3 ^5 y9 s7 ?' j
[

* A; a1 w) S5 t5 s- O$ h! L- M5 q5 o4 w( ~! X4 P+ E4 S
do-trade
8 P- N' h8 t! l8 U8 E  m; _6 Z# O
  a/ S6 g) Z- ]( W! L) B
update-credibility-ijl

- w  `5 L1 e7 o& V+ C! \0 P& a
- Y- {' P- J0 }1 \4 iupdate-credibility-list
4 P0 A: J$ G- G& ~& M4 f
% y9 _" C9 i+ H8 A3 A

" o  F; |8 l9 F( gupdate-global-reputation-list
2 a7 [" }" B: C0 n5 D1 G( P

% z6 V( K' k/ M0 R2 G. k1 W$ upoll-class
0 s( \/ X- j  b3 h9 g) c( r6 k

- K7 ^3 z- h3 q) _get-color
1 O1 H6 I" x$ u. g) |9 F9 G8 {
5 k! C6 V0 Q3 X0 F$ h2 K$ R( N% @9 Q
]]. z- H& {# }5 `5 m) C( G. g1 V( \

3 @8 _, N+ O" ?;;
如果所得的信任度满足条件,则进行交易/ H7 J) d# y* q) E8 Z
! p7 ^$ K8 y! ]
[
: Q: X+ p6 Q6 F1 i& r

. z7 N' S, j" h* H0 W- j; Trt random 360

% n8 ]7 n5 V5 \2 w: A) X
- t3 ~! e2 J3 N+ N6 H: lfd 1
0 _1 J* V3 X' u$ d" f

" k+ U. K! y2 e/ g+ @/ l& n]

6 P! e, [2 d+ U* g/ V$ X- R9 ~
" k3 v7 Z4 C% E; j1 Mend

' \% h4 l! ~" v7 H! l( Y9 l
$ G# R4 w, e) A: j' @2 r2 D( S/ Pto do-trust % r" J2 G* {9 E# K4 |: [, x
set trust-ok False+ A+ n. X3 v6 ]9 B9 C
$ R. P# m' y4 v/ l  z2 J
3 w2 t5 p0 N/ A
let max-trade-times 0
( F9 b: o' S; q+ x* `* B4 _, Zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 O9 d8 \# J  L5 T, i2 k7 [let max-trade-money 01 x7 y. U3 S0 j5 W( @. K
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 u0 f6 X1 j* O1 L
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* h% v. Z/ K( L' I* U& p( H. l, {, {3 d7 n  I1 f; X

+ n  L$ [& }: Q% D2 g8 kget-global-proportion
0 {4 [6 U7 d( M5 p, b! N9 Rlet trust-value
1 x+ t' W! `" _4 T3 u. x  |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)
$ Q+ S3 s" U* @! a1 k6 d" x% ?
if(trust-value > trade-trust-value)- R/ e% N: J, ]& |( q
[set trust-ok true]: T- L. D' V3 B. h8 T: T2 p
end8 e) V% @: Z5 y- C: P

1 ]+ ^- z6 D0 ]* x+ vto get-global-proportion
  J2 C( S8 R9 a" X' C+ T) Bifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 Z8 Y$ \# q# G0 K) S* o: `$ a( X[set global-proportion 0]6 Z8 ]8 ^& N$ [  ?& U
[let i 0
6 k! v' v/ b7 F* M! h: t( z" nlet sum-money 0
8 v! v: f) r3 C3 A) wwhile[ i < people]/ i# U( s5 e  F2 |
[. j8 W4 n7 Y8 |3 V7 S( F
if( length (item i
" b. t2 E- P8 _+ F' ^[trade-record-all] of customer) > 3 )

" s' P$ S9 _, _! Z3 @1 y[. u- {8 t% S4 c# V$ ^( A4 r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ F( G3 l. P4 y. m]; H9 {" B6 ]/ {! X
]$ R/ p4 x9 j1 l' K. M( X& c! m
let j 0( @7 w( {# p2 ~! N% W
let note 0# h/ R) n7 z7 R7 \5 T$ B
while[ j < people]+ z7 Z2 \, m& U: z, I
[$ |# H5 _$ k6 V+ e8 F5 N
if( length (item i% \4 o, W% q% n, c  |  M
[trade-record-all] of customer) > 3 )

0 R- C5 j/ G* f5 B* L[
# v" _8 z. X7 }8 l% sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- Q$ D6 K$ Z2 q. z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ y8 d- c9 }. l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! l8 Q) ^& [' @
]6 M6 R7 R  s' X* o0 V
]0 T1 I- y( F  \
set global-proportion note6 r- q2 _9 g8 o% S
]4 C6 r& v. @2 R: m9 n8 F! b+ b, T
end) d7 m' N& C4 V- N

" B, i% H" x9 m; I8 Vto do-trade
5 r6 H4 o' z( y) R3 D0 h. I;;
这个过程实际上是给双方作出评价的过程* n0 `! G) C' o+ O! Z  o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# ?* x; ~: e8 T7 G3 N0 g) Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' I! T% `/ d! A& [+ M8 dset trade-record-current lput(timer) trade-record-current
: u' G9 p' C6 Y& w' n7 T5 q;;
评价时间
3 n- l& U; |; _+ I9 S2 u2 D$ xask myself [" [0 d- A5 a7 g
update-local-reputation" b! `8 J) z! a0 z
set trade-record-current lput([local-reputation] of myself) trade-record-current* i' X. }7 j4 y: T; z4 L
]
; R* T, ~+ w6 Y6 U8 lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" H4 z1 W9 p$ R' u5 }( |* X
;;
将此次交易的记录加入到trade-record-one( r" T* X7 z  V: W* I
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 x  Z  h! Q, C, }; L: e/ e  Vlet note (item 2 trade-record-current )* e+ u, D4 s2 H) Z
set trade-record-current
" B. W; Y: M2 D8 ^+ q1 n$ i(replace-item 2 trade-record-current (item 3 trade-record-current))

" ^" Y7 o+ {. k, i1 Cset trade-record-current2 R. C& k' U5 w6 z& Q! s+ d9 }0 {
(replace-item 3 trade-record-current note)3 Q* C' W- b8 E# D

- T# |3 U, U1 w7 r) I. f4 b

- E3 v. q- Y1 d8 H$ q# z, oask customer [
0 X- g4 d. ]. f8 b, x; wupdate-local-reputation3 L9 J. v$ x+ _3 W, g/ a' M
set trade-record-current
7 [3 F9 s% x7 n' A" e& E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 z! J1 R8 ^, [8 {) G1 S9 f
]
( h5 W' X2 k3 V0 c; t4 B! s- W2 W- w2 t6 G- I

& b$ S2 q9 D' h% J1 Oset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* r* \0 x" j# e3 V. e

2 T! x0 E. a8 ?" t" n1 xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* S$ S( {" v$ x+ `7 _. V;;
将此次交易的记录加入到customertrade-record-all
/ ]/ L' H$ @9 T+ E0 ^  mend
0 `: w# l& o- v' T8 U2 l4 }) ?
  @, b1 a# F7 a1 cto update-local-reputation0 R* R+ u/ N( c3 }/ g$ y# _
set [trade-record-one-len] of myself length [trade-record-one] of myself( u# K, y5 A5 o: h: g2 h  w1 [
/ W5 A: i  z: v6 E5 k$ V
" g! t2 m& X* R
;;if [trade-record-one-len] of myself > 3
) h- Y( A1 Y0 L
update-neighbor-total$ g3 k* e: _+ T
;;
更新邻居节点的数目,在此进行: H( A  q0 f9 }0 ?1 ~' z
let i 34 v2 q% Q  D2 v5 E% G* x4 A& L
let sum-time 03 [% C9 m8 _! f* A5 n- o0 ^; W
while[i < [trade-record-one-len] of myself]
# g: m. G$ c0 B. t3 B- t5 D! o[
1 H6 v, j+ {) L$ X5 ]& b& Aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  d3 H$ r; w5 l6 F$ N- Fset i9 O( `8 ]# ]2 x
( i + 1)

- K. R6 e: _/ _+ k4 k( Q+ y]
6 O% x! B3 n) t1 \  N% t/ hlet j 3* x% y  S& ?& k5 B. \' F8 H
let sum-money 0
1 C; R& [( `2 Y7 }$ m# Hwhile[j < [trade-record-one-len] of myself]
( o  N& _5 u( e; q% O[
+ ~1 A( ?2 L' y+ K# yset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
! C8 |8 Z/ J2 H8 d; bset j( M& z( m/ ~1 E
( j + 1)

1 L! e. p$ g% C3 k# z]. F6 e% A  s- ?) |
let k 3* q/ `9 u3 s; l  P# H4 ~2 O1 ?- O
let power 0
. a+ u1 ^0 W) F% Xlet local 00 {1 s7 K3 {! @
while [k <[trade-record-one-len] of myself]
1 ^- t# z: x$ {5 |' Q[
" z' O5 ]6 _0 u8 T* a4 j8 T/ Aset 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/ c# e& x4 N/ S! l' Mset k (k + 1)
, O5 y3 }1 {3 ^7 ]]
; p" S, W8 j% yset [local-reputation] of myself (local)
3 u7 q* b: a/ Y) aend# [& n% T; F. b" b5 S
8 `: P* r0 c8 [3 W' r) j* [# R
to update-neighbor-total! R% F4 @+ g1 F

* h; b2 I8 a; V% O! `7 R% cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 Y7 l  K! V4 r1 R" }" ]
7 x: G8 ~7 q, K+ ?& W
- c6 Y4 {5 i- \: ~. |
end% J" v6 U) V) a2 G& i% _

1 A: ?5 D$ |/ O1 r& o0 xto update-credibility-ijl % s; E2 u5 u2 ]
" Q4 p! e; b  M1 q; K5 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。
" ^0 C" ^3 }  b) H- hlet l 08 s5 Y$ s2 y! d% e
while[ l < people ]
  z  W, O5 Z$ R;;
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
( }& p' ]3 ]) a* i" D! H+ F( p2 W[7 U; j6 L9 m' |, y$ x3 o7 H% F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ z6 h. p. N# c
if (trade-record-one-j-l-len > 3)7 Z3 Z. }) q# q5 ]
[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) S8 \2 m4 v1 _& p( a0 u
let i 3( j' X3 K% o( ^% E5 \$ V( F
let sum-time 0; M- e( Y# M% Z  T# c( R9 A! I
while[i < trade-record-one-len]
  O" K% Y! \* E9 R# w  {. @' l) R9 K[8 a3 B8 g' a8 [. B% I
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), Q& V; X% n4 k
set i1 ?( W* [7 A  P. h6 u4 L  n
( i + 1)
3 w* N6 ^) N1 S( P  e" q
]
/ k9 L  s' [/ t4 @let credibility-i-j-l 0
% |; Z; J- N# i7 q( m7 y8 U' X;;i
评价(jjl的评价)7 ~" d& u- J' z; Y
let j 3
# G( x. G! w! S$ z; H( blet k 4
' S$ a" ^9 l2 Uwhile[j < trade-record-one-len]
& Y& ?, Y: ~' i/ n[
6 ~9 _2 O) J" Q6 A  J$ ?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
, ~( `7 f; e1 M  e: z9 O1 ?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)3 V; n  }  s7 H% Y) x6 y; y6 U& t/ s
set j
% ~7 z' y" |1 r, l5 n: `( j + 1)

+ C0 U" w0 c6 `- E]
, Y# |$ H4 n2 |! u4 \( tset [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 ))2 [8 p7 I9 p) |6 I
2 H+ e8 F3 H4 `
* x% x) N6 R) ~( ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); z' ~/ `* i, U4 k* x$ \- v
;;
及时更新il的评价质量的评价
& D5 B+ b/ ?2 f) X) @set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 V9 u0 ^& v  e5 X: i# I) o8 y
set l (l + 1)
& O/ O4 d5 t+ O( `]
1 h  _) F' Z6 r% Y6 H! `( Mend/ V. C. y; V, L) g1 T1 B) g/ W
; X  O1 y, Z, t) |8 y7 X0 z2 f
to update-credibility-list* }: B% y5 M' C9 [5 F6 o* c
let i 0
: x" w: ?) l1 Z1 i& K% Swhile[i < people], V& U* v" q. O) l+ l2 s4 g  t
[
# }7 |4 v3 V8 r1 Alet j 0' l  T! e2 J) q, |1 N% a, I
let note 0
5 G+ C. m* P( _3 n6 wlet k 0
- v5 G0 H  H6 [! m4 V2 j;;
计作出过评价的邻居节点的数目' H7 v  B4 U2 J" o2 N
while[j < people]: B" t6 y6 R, z  y
[
) E, U/ I% `' T  a( Lif (item j( [credibility] of turtle (i + 1)) != -1)
. F" G; w& [% x9 d( H+ D;;
判断是否给本turtle的评价质量做出过评价的节点% q+ ^( P! p% z; }8 d
[set note (note + item j ([credibility]of turtle (i + 1)))
2 r4 t$ {, ]! r. {' [;;*(exp (-(people - 2)))/(people - 2))]

4 ^' S  C2 ]9 T' c' Mset k (k + 1)
* F5 \+ p* b( B, ?- D7 ^]4 F6 U# h" K" @
set j (j + 1)) u# k1 R  n) ^1 ~+ x
]
7 F* |- ~! _- g7 l# Rset note (note *(exp (- (1 / k)))/ k)0 O4 R- ]7 @3 d" T! H0 I! S
set credibility-list (replace-item i credibility-list note)4 O5 v# l+ A5 I) D2 L
set i (i + 1), G8 Y4 h' g* h  P8 e8 d( I6 M
]
% N% }1 N4 ~4 N, V0 w8 m" @, Jend6 ~5 S" N$ x! V  m  h/ H" M
3 U3 R7 h+ O$ U  ~
to update-global-reputation-list
* A3 ]' a8 S5 E) y* ]" ?8 olet j 0
2 ?2 N0 [9 @! [; c1 O1 }while[j < people]
2 b2 C( ]5 n2 z% D) q' s[
/ `/ }) g; e2 l6 x# @let new 0) \6 H7 E6 b. {, [
;;
暂存新的一个全局声誉2 R/ X; \/ M* X. D2 E% O
let i 0/ p8 w& w2 t! _* Z3 p1 Q$ b
let sum-money 0
7 r! ?8 T& W1 w" @* Q4 }let credibility-money 0
* r! g2 U) D9 t) A4 ^while [i < people]4 Q, x" ?6 e9 r2 s' y, ^6 ~5 b  Q
[! `9 L* a- I7 m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" b  [3 U8 Y2 h* j4 N* ?3 R4 _8 w) Hset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 e- l* `' Q1 ^6 l# W4 ], `9 k  nset i (i + 1)
! G9 F, S! o4 v* @/ U  v]
7 F$ ^" {  k9 s- ]) u( C8 U0 F0 plet k 05 B/ q8 a0 ^/ g
let new1 0& p* U" `0 A# z$ k6 R" ~, Y0 P
while [k < people]5 t5 L" \1 n1 o; P
[
! k- p1 U0 F+ y9 r  d2 ^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)
, q5 F! X4 F. o8 ^7 r  c9 Lset k (k + 1)
- N+ p6 L8 Y+ Z]
# s2 c  c. O/ Q) A+ r+ sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 `2 I0 h4 D1 ?4 \9 y/ o  xset global-reputation-list (replace-item j global-reputation-list new)1 i( j( ~& ^. U6 x% G- W: i
set j (j + 1)
) Z9 i- V% o7 ?- ^7 `$ R6 E, E- D* ^9 H8 J- x]
7 j% m- D( F7 Lend
' M- J) O8 J3 V" V: y6 \" c; O' K, W5 f
3 k6 I) `2 O& P+ D8 f$ @* l

3 C- M% A$ E; T6 `& Tto get-color8 q: m: N( w2 S# L+ Y, d

+ Z+ D0 k* U2 p5 `1 Pset color blue
& w' w1 S6 ~2 m# e2 g" W
end5 J; |0 ]9 I' Q  a
/ B0 P: D" k) Y( D5 N
to poll-class
/ R5 q' t' m+ B% U  A$ M9 v, @# \# k. |end9 V9 y" p3 ]. |, k6 v3 U
  w& B# ^, n& U9 R
to setup-plot1" V, J2 U( j/ F- z! x; {. F
! K( g8 b+ S% B5 v$ w* r
set-current-plot "Trends-of-Local-reputation"

" R+ G( Q* C8 B" l0 J. ~0 m6 f% W
2 u# n2 V7 c# o/ y) sset-plot-x-range 0 xmax
" s+ X+ i8 M% ^% ~' ^! [" u
. a/ t3 _+ Y+ ^& q  K- R( _
set-plot-y-range 0.0 ymax

1 y7 n" [0 @' [* z% m5 ]4 q! hend
. f. D( O% [3 J, y0 V1 B
% v' S" [. r1 L. C8 qto setup-plot2
& A2 S, Y! j% m8 ^/ z1 H- i
7 U6 E  i( [. X( v" S, X4 Sset-current-plot "Trends-of-global-reputation"

+ ^1 m) ~# J$ L& y. a3 C6 J% b, @# m# N/ T4 E7 y& Y7 U
set-plot-x-range 0 xmax

- N% b% M: w4 L: l& z! [  K8 _6 }# R4 M6 h4 w% y
set-plot-y-range 0.0 ymax
  k) c5 S: {- ]9 c6 x/ O6 j. c
end4 K# E) U. g/ Q$ \3 Y
( p/ W. O/ p$ }4 [/ p9 S8 }3 ^
to setup-plot3/ T1 l# X* V* Z" Z. f

3 q- i" q+ o5 q1 Z0 nset-current-plot "Trends-of-credibility"

8 }" u! p# S7 e$ W0 _" o7 E0 a' X3 W0 o7 x' h& b. ?
set-plot-x-range 0 xmax

4 |! j: w8 @4 k# {# ~* A& n4 u
4 c8 V/ w$ u9 Pset-plot-y-range 0.0 ymax

- {3 M- y, `  l4 N) ]( v- a9 b, D1 o- Kend
5 T$ ?6 {. _& Z" g; N7 `* Y, q& T5 e$ R
to do-plots) {3 E# z; Z" p8 |. |2 a0 |
set-current-plot "Trends-of-Local-reputation". }1 t% {7 D2 }! w$ W
set-current-plot-pen "Honest service"
* ?+ @4 k% g) O  L2 _, f) a' rend9 O* L9 ]4 d; l$ y. O, |" z
2 y* L8 I$ V2 T: F! V& [
[ 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.
* N8 g- \3 \* \
  o7 }: G- y9 ~) D, z5 ?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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