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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:
# @( }' r" g6 R' |to do-business " M' J( P% \4 b% D, m
rt random 3609 Q% b5 E( e7 d2 R) L, ^, w( d5 B
fd 1+ R% }( \$ K: z2 z: s' n
ifelse(other turtles-here != nobody)[. S- e; y6 ]+ d
   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.! H! g. O, j) U5 y, M2 V
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # H9 O+ \* i3 @8 \8 M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& U0 X0 ~, o6 L& S
   set [trade-record-one-len] of self length [trade-record-one] of self
8 B/ r9 O: V2 m1 T- [! z   set trade-record-current( list (timer) (random money-upper-limit))
: P4 ]  R4 O8 x2 _" L  i1 n: l3 B1 d7 M; n3 H3 {
问题的提示如下:4 p) z3 a1 F" M0 T3 {+ y8 N( D+ l
9 o# f8 z) o! N! A3 o
error while turtle 50 running OF in procedure DO-BUSINESS
  L2 m, O+ Z7 d  called by procedure GO  {; r" N: w# y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 X6 |; Q; j6 c$ h6 ?. K
(halted running of go)9 Y- b5 P( h' ]( D8 ?" b# s/ Y9 A2 A

0 w! h- o" o5 U$ {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~~
0 {$ Z8 S# \* T, _/ y  j) 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
0 m; y' c+ q  @1 [, Tglobals[
: B1 a0 q/ w  C5 Z3 Sxmax
/ \, _# P5 U/ K4 s* Dymax' W1 e  K) t& ?) \. O0 w6 I
global-reputation-list
/ G' ^. F* _3 L1 S# s  A* c. v3 f# y& `" J% y3 B
;;
每一个turtle的全局声誉都存在此LIST
2 h) K5 a, N8 A. r& K5 a% U9 Z+ E* j, Z1 rcredibility-list  T) |% x$ v. o- t+ t
;;
每一个turtle的评价可信度8 c7 j6 H$ [) J9 `& Z4 [8 v
honest-service) R6 h, x5 X4 a  a: I" U3 o6 F
unhonest-service  |2 F- P  K* l' G! M9 t- |
oscillation
% g% Q& o- x4 o& z+ V$ H+ brand-dynamic
. Q2 A8 ]! }, u) q0 k# C]
6 m) a0 p2 t4 O: D9 k  A6 G( F6 K5 p. {
turtles-own[
# J6 l% M/ G6 D; i# _7 xtrade-record-all7 r; f% c& g0 B
;;a list of lists,
trade-record-one组成
* b. ^3 o7 V7 D8 `* l1 b8 Ytrade-record-one) |  F$ |, `& {% X9 m
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' ~  l& ]$ |' S9 |9 m2 ~. k7 x( s% d$ L# c* i1 x: I. |  q" x; ]
;;[
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]]
# d4 @7 R- ]1 h8 z  J' Gtrade-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]0 i* s2 \) V- `' x, v% {# t' I
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list7 Q% F+ l0 I, r* Z2 E' d# ~: h9 F* D
neighbor-total
* H3 l7 {9 X5 i$ L' D$ B- g, z;;
记录该turtle的邻居节点的数目
# T. f5 h5 _, ~7 o$ ^6 z5 J% Btrade-time
, a1 X0 V5 R& _9 J$ E;;
当前发生交易的turtle的交易时间: M) y' P2 b% K6 u& E+ t
appraise-give
( k  b6 Q  H+ f8 O& ?;;
当前发生交易时给出的评价6 Z1 C5 I. D# D3 ^
appraise-receive$ f7 @( U! O6 M
;;
当前发生交易时收到的评价2 f+ T7 P! e4 P$ p
appraise-time1 {& f1 }/ p/ B' Z. e$ c
;;
当前发生交易时的评价时间9 X" }0 H- j/ N/ C1 V" X# i+ L
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- [% t; y- v- Q2 A
trade-times-total1 U2 t' y0 z- W9 u; X' B( S2 G
;;
与当前turtle的交易总次数
1 L, c5 |& R& s5 Ftrade-money-total3 u* L' T0 r7 m! o1 c5 J
;;
与当前turtle的交易总金额* A" Z4 |, P6 {, X# |2 Z
local-reputation
( w" o. P& C" _- f* P$ sglobal-reputation& w8 f- n1 ~8 I9 f
credibility6 y" U5 z' p9 ~# z! O
;;
评价可信度,每次交易后都需要更新+ E( ^0 B0 j, T
credibility-all  ~7 L8 T6 b9 `; g& I
;;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( C# T+ W$ H: p8 s, Q: m! a
7 v  M- G# t4 c% P4 `7 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
! w2 U1 h6 R/ M+ F, L" A1 ?* Acredibility-one* U( E$ ^) C, V# K( C/ M% m% b7 o
;;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
; V/ \! s+ B7 j! T8 z+ zglobal-proportion5 M# k0 L& M8 |: h
customer1 ]# ]  S& W  d' }
customer-no
- D9 `, M" n( K! `8 Mtrust-ok
& y, u7 ]7 z* u! Y& f, D, wtrade-record-one-len;;trade-record-one的长度8 B6 O" X7 v1 H# C' F, `+ t, E# x8 r! P
]
. H! v% l( h3 E
) d- g% Q! {8 Q2 |* |: X;;setup procedure/ z$ d2 Y0 v5 M  x# \+ c

% b) `" G# J8 J  }+ ato setup
7 A( @- ?0 ^- R, z% ]2 o/ |) {/ L( P
ca

. n9 q4 R, t) Q3 o; S/ s3 v  ^: S8 l7 r/ o
initialize-settings
7 G9 O. z$ a8 Y/ Z4 |
4 u) ?1 R8 a6 L
crt people [setup-turtles]

; A4 s1 X1 l+ }6 n" D
, ^; l2 o% j, d9 E  F! \reset-timer

, ~1 Y. S& G3 @, @6 V& r* q6 k8 o% U6 n( p$ A
poll-class
/ d) |) V" U" d3 R( [3 ^

0 c# l! M* Q8 N2 V& z6 i2 e  P, E9 Psetup-plots
  u' E: Q) D& H, D. V" l" X  b1 ~

) O) }+ k5 E5 Rdo-plots

) x' Q4 w: P9 q  {+ r6 x/ Nend
+ ?7 T- Y5 ?; {5 Q
0 a& e$ Y# n! p8 x4 g# w) V+ Qto initialize-settings/ B2 k  y; \1 Q; o9 ~( U3 h6 P# l, v) u

, v5 ~" N8 m1 ]' L0 Lset global-reputation-list []
! c. [7 b7 t, k( I7 l( [& @

9 k- T" l, O# e9 Hset credibility-list n-values people [0.5]

; N) ]/ O- _2 u9 @6 d% g2 X4 Z4 g6 [1 b& z2 B# D
set honest-service 0

; d: j6 Y& n& R% x% R
' |' }, H/ x: e/ N$ J0 x, t+ Y0 Pset unhonest-service 0
' a" H7 x$ A& P% s  J5 E; D. o3 c& Z0 u
: F% t3 f, d+ r& D$ w& Y
set oscillation 0

; O( Y1 @) m' H5 \# [3 _6 o- c# B! e
set rand-dynamic 0

; E/ w4 g: C0 R6 R: |end
0 R$ e1 m$ L" g: q" ~& c, P
' G' D' ?# z) |to setup-turtles
2 E3 m( c9 A  N0 Sset shape "person"
0 T2 {) I/ I' a- y% N( T  Bsetxy random-xcor random-ycor0 w: h1 l: s% ~1 H
set trade-record-one []9 v3 Y8 l" g! e1 n# ]
( c9 h. ^' ]! R$ I2 Y, R# E
set trade-record-all n-values people [(list (? + 1) 0 0)]
; V, ]% I$ ^1 G9 R  {  M; g6 t
9 E# w+ w* r6 d
set trade-record-current []) y6 H& I  t9 a3 J8 B! }1 L8 ^9 e
set credibility-receive []
- P1 f  E* A9 |7 O# fset local-reputation 0.58 c$ i  ?! `# F  {
set neighbor-total 0
6 w: M( h4 N" O& Q. Iset trade-times-total 0
6 K. G# e( d! ^7 Eset trade-money-total 0, n& r7 z* ]& b- b/ R+ M
set customer nobody% W: E. v3 E" r1 f+ [
set credibility-all n-values people [creat-credibility]
; L' f2 e; T4 a5 o0 U+ }+ q' Gset credibility n-values people [-1], v1 S5 S$ F1 }2 A% ]9 F& R& O; `% I
get-color/ R" H- V: ]; R! e
$ Z9 L0 E  v: X  O* P# Q
end
6 v4 N* Y# D/ P
- k/ z: W" j1 q5 i% P* K7 W" ito-report creat-credibility
) k& h; l* S  ?& ?( V  n$ n  nreport n-values people [0.5]# }0 L. J3 E* H8 v3 k) z
end
# d/ U% H1 T& t9 Z0 E: x% [1 }  f; _: x+ h' ~1 V
to setup-plots
; k# x0 _8 F5 o$ w& W% g2 U4 V/ L( h5 T- @( l) N3 j: S" g; t
set xmax 30

" G+ U3 l. y; L1 L8 |; T9 I* b3 _4 g' L
set ymax 1.0

4 C9 d! t9 b5 @7 t4 L2 \( h+ o2 x; u6 s' F0 G: v. p/ f
clear-all-plots
$ J3 f7 g$ W7 O; j. z+ g
& A2 [; _9 j& F* K5 _4 b
setup-plot1
- M- T% _4 [9 k% R
  L1 N& j$ t( }: L' W
setup-plot2
8 i7 G" m, f( c$ l- T

/ T/ K1 s, q: Msetup-plot3
. @1 j( h+ P0 ^
end
# G- h  W6 H1 Z* b: F% d3 W2 E+ O3 D1 `2 D  F% G' `- @  [
;;run time procedures
& d# x( U0 A0 T
- G4 ^4 V3 e. {  s- J$ jto go( Y3 Q2 t; K$ A0 T3 j5 d: k
$ S& K( j4 K, e
ask turtles [do-business]

1 b7 W5 j' y- Q' t) Zend
' A; c! S" C' Z! s5 W: F; S0 Q# v" Q' F
to do-business
* b1 W8 W- `' w" O

6 R! e* H) Q. B$ t* m$ P# T; j  ~; {3 U
rt random 360

2 Q- [4 P0 {0 w4 L5 a
  R+ s/ r7 W+ ]& B8 X3 Y8 Cfd 1

5 q" |7 F. J2 }1 t' _
( m8 q+ F; B0 i9 \( l( tifelse(other turtles-here != nobody)[
9 r0 X" }) E4 h4 i
# Z" U9 u" k: j) Q4 Q
set customer one-of other turtles-here
, ^' X9 ^) A( Z
! `# u: O; B6 ~# ]5 l  B7 d( D
;; set [customer] of customer myself

+ z1 M+ H3 K2 p! \
' P4 s! ~" r- k' Gset [trade-record-one] of self item (([who] of customer) - 1)
. Q* [( i2 k. l& \% h[trade-record-all]of self: v9 ^2 J$ ]" z% Y+ y& K
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# }6 _! J' W2 j, J! ?
5 T/ n9 q  y5 E. A" v* }7 a
set [trade-record-one] of customer item (([who] of self) - 1)/ M: [% z' z9 j, r) G: D" P
[trade-record-all]of customer
0 u* w- j4 r3 Y6 B3 k

& n: p5 P, Z5 l% ~1 }# g4 Lset [trade-record-one-len] of self length [trade-record-one] of self
* [9 A4 ]; R) R6 A. }2 x
2 l) p$ K. u$ R: U% T
set trade-record-current( list (timer) (random money-upper-limit))
& a5 U0 D2 ^! h. y
* k" P( k" l8 \% g  a
ask self [do-trust]% M7 E2 C3 H# n4 s6 f; B
;;
先求ij的信任度
$ @3 Y7 O2 M1 u: B: v: X0 H2 G8 Y( o/ S- h- W  W0 {/ p3 |
if ([trust-ok] of self). {8 i% V: o& J
;;
根据ij的信任度来决定是否与j进行交易[
" a$ {7 Z4 j; W; X$ k7 Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; U- H9 M& X, I4 G3 T) N' s

! Y- y# r9 u% F2 ]7 y7 m[

0 p% _; X, K' k( h2 x- B) Z4 n' c; R' B0 e, d! @. Y$ P' e
do-trade

6 e$ A2 f% r4 J5 r5 B  e
6 n3 ?" u; L2 s" V# rupdate-credibility-ijl

  [, r  U+ w( `/ Q4 @. Y) \  {0 i7 F. Z: R/ ]
update-credibility-list
' F* v" o4 ]% M% F) b, Z" K& i
/ G2 @2 x) K$ x

  S6 }4 b, a8 p" Jupdate-global-reputation-list

5 d# n+ I8 e* }- ?# Z- q8 ?5 d0 N4 A, e6 J
poll-class

# q- L4 z  ~8 W- @9 a. ]+ Y3 W6 X
  P: B" i" _) r) g6 m2 i( xget-color
' ^' @$ a+ L! O9 c
( s- o! n- p# r* r1 }$ V1 ?1 i
]]
5 ^4 B$ u7 v3 s$ c2 ~# {: r$ f, _3 \
;;
如果所得的信任度满足条件,则进行交易
! e3 @3 F! r' F  ]$ Y. i1 ]# D+ W7 l* D/ Z
[
4 [! p& Y% z' K; ]
2 K; m) o9 v* }  f
rt random 360

: Z2 X% T7 l8 D# p6 ]3 N
* x) k3 R" f# O8 ^fd 1
- k! u: z4 z" j* T. e

( Y: v/ @( ]; B3 k  G6 G3 @( d$ X]
" Z# v8 s- k: _) F' [
& F6 _9 u. p8 u8 t8 Z/ J7 R, d
end
* K& `' U! W/ }( A: p

3 y; c3 ]# ?8 k3 `to do-trust
1 N7 F3 e4 }9 [set trust-ok False
' e  I. {7 j* v; H7 F. g- o2 o, A( a6 q9 n$ t

) b6 Q0 L" o1 d' clet max-trade-times 0
  V) y3 t) Z5 ?3 T( J+ s$ O+ yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. G% n3 K* }! w. }3 D; nlet max-trade-money 0
. i8 y! W' i  }/ c$ Tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; F8 T* y- r3 ]' }# N: t
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ t  M* k. h* K" h- G+ f. g0 K, D
# x1 m4 g* F- }0 M) P" D2 }

, ~  ]4 S3 `7 }3 \- G' V3 d4 k1 y! Tget-global-proportion
  L+ u; o( d% h, xlet trust-value) p6 g5 g( l  A% M0 J0 O% W
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)
2 L! X# y8 ?. P( v. g
if(trust-value > trade-trust-value)9 r" Y" b) o% d+ O5 L% D
[set trust-ok true]
9 a: @- ]& [1 S- y" S3 ^4 }& ^end0 H' J* d" ?/ V4 i" L$ q$ U/ M

. T" o' ]( x, c1 B$ `to get-global-proportion7 ~; g% O, q8 Z+ _
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 a0 @" K8 Q) `& M
[set global-proportion 0]5 q7 {) g* `& p5 i+ G3 E0 Z+ l
[let i 0
- i: \" d* H9 H' X/ I3 U( S+ ]1 Xlet sum-money 0
( |4 T% v: P2 k9 t2 ~while[ i < people]4 Y' t' L8 a2 i3 [; B
[* l1 _/ g0 a, S- E: M2 B% Y
if( length (item i% n# V$ E2 n1 Y& a
[trade-record-all] of customer) > 3 )
/ ?& ?: B+ o% f! Q7 F7 D) E! r
[
( E; }9 ?; C2 t1 J6 m. uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))& p8 \2 {6 j9 j
]( X/ M, h3 o0 }
]
) e! k5 h1 Y8 `' H+ Ilet j 0
5 Y/ A1 t: B- D* klet note 0
: ]" `0 M' b( ]0 Z) T9 P; Zwhile[ j < people]& {$ l! ~! J4 U1 A3 |8 A0 B' A
[
5 y. t" d/ e* f$ d9 k' R0 `* J, ^if( length (item i; ~1 m  x+ ?& V1 f' s8 U
[trade-record-all] of customer) > 3 )

5 B4 Z! D" D" Q! j( {9 _[% E# i& G9 c, v9 U
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 P; Q) P. K& }" W
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# B3 s5 l- ~2 D; \# S[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 b# t3 O" r1 _4 E/ {]4 ?9 I' j) Q; A( o
]
3 w  W+ U' I7 i; s) ~set global-proportion note6 u7 h3 z/ \( S5 d) ~
]' Q' ^$ y6 l) q( x
end0 {& D& l6 i1 S8 x. ]4 t+ h5 F

6 k3 S& p# X, ~& mto do-trade
: F2 ?3 z# l$ s/ S8 X;;
这个过程实际上是给双方作出评价的过程
8 A0 y8 y5 n& `! b; |/ Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 z; e3 m) k; F' S! v3 V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% g. C: a8 X  x( g/ |9 z' {* c
set trade-record-current lput(timer) trade-record-current
- M  V, w# v1 I4 z;;
评价时间' q! D& J8 {% O4 X! P- T
ask myself [
/ z) ^- q+ ~' jupdate-local-reputation  M0 W( U+ E( H& f( t7 H
set trade-record-current lput([local-reputation] of myself) trade-record-current
7 [: E% j% Q( {! T+ r: C" C. K]- F: W2 V+ }7 F$ ], ^! B- x* i4 u* C
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- L2 D1 B; V4 M' K7 n;;
将此次交易的记录加入到trade-record-one6 g9 j% v) g2 j' k# B
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ t" h0 N6 X% h: K  _let note (item 2 trade-record-current )
) L: K; d$ O) @  f5 D& @8 ~set trade-record-current$ U2 H8 K2 ]! M. j8 ]+ S% E6 A
(replace-item 2 trade-record-current (item 3 trade-record-current))
; v! ]8 K% @. ]% i- G( h. e. {
set trade-record-current
5 B- L- z' a3 H4 l- b1 @, C(replace-item 3 trade-record-current note)# m) S: T+ ~9 S+ D, v

# M4 [( Q3 ^% O

, J' ?1 |0 O! o. ~# H: V: Y$ pask customer [0 H: ]% l0 |1 _/ N
update-local-reputation
/ D' N# T' E% J- N% lset trade-record-current8 f4 [9 Q4 z- v5 O9 S. O
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ S# R1 g6 f$ O2 \. Q  ~, f
]
9 h9 {) H; T4 K, S/ ^! m! }) m
. ?5 U% p+ B) y* `0 A6 n
) o3 N; w3 A7 p6 G- _9 M. `4 i' e
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  P' I( f2 }4 x. }3 D# @6 e* z* U

/ {! ?5 U+ q. s; u) o3 Gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 K& K; n: S( H0 w;;
将此次交易的记录加入到customertrade-record-all
( J) O( F3 T: z# fend) l0 ?8 O1 U9 E! G8 Y3 U  f5 k; ]
2 v) i0 E( V) a1 R  n
to update-local-reputation$ P1 O% U. B% ?, L/ p
set [trade-record-one-len] of myself length [trade-record-one] of myself( V3 O. I4 V+ i: l8 l4 c
  h( h% ~5 }6 u; s( t8 f
/ B! u* L/ l! A( B7 P' _
;;if [trade-record-one-len] of myself > 3
+ w# t- G, B. y# i% x3 l
update-neighbor-total8 L% p6 z6 m( Q1 B* q3 V
;;
更新邻居节点的数目,在此进行
1 }& S+ J- ?4 B/ X$ olet i 36 P6 B- Z% E0 I( d$ a
let sum-time 0, L% m6 Z" z' z4 Z, f# m& z/ y9 n
while[i < [trade-record-one-len] of myself]
1 Y7 l/ R6 y3 G, }[, R- ]2 r& Y0 h8 y5 W
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  z6 d4 d& c0 A# m- v
set i
* @. Z# A& {- V  o3 N( i + 1)
4 w9 r) t# a9 B! f
]
+ C3 ]! c( V$ M8 n' `let j 3# w" r# i0 P- C( A
let sum-money 0. i7 r, s5 _; m0 X" G# x
while[j < [trade-record-one-len] of myself]
3 v, @2 S- n, q: a/ f( ~[' O; l) F9 U7 k  _' v
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)
% @5 e# Q0 s# sset j
* }6 G" ^, q8 r! ]+ J9 ^! _1 _( j + 1)

" e7 T7 r# O  ~]
% E) T2 J; T+ Nlet k 3
- D& e2 H) ?, W9 r3 A( plet power 0
& z  @6 E' z- I' t$ V. F" jlet local 0; K' A0 v2 \$ ~( ^
while [k <[trade-record-one-len] of myself]
, o6 K+ Z' m1 ^. H! t& y[
6 N$ o: t& t8 {0 f! ]1 mset 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) 1 B% L+ f7 W% j
set k (k + 1)
& s0 t5 g! ]. ~3 d# p]
: E$ {) O( I1 h" _$ Q9 Z# dset [local-reputation] of myself (local)+ [/ t: j; P. }  a; n& k( D, ]# M9 i6 m
end
- |- m; d( f) w6 y2 |* _1 U
( v) I1 T' e( W& m6 Q" Qto update-neighbor-total6 k* A9 b' a  T( }! p# l+ t$ k

0 i! `' h' m1 n4 K* `5 d  D( Oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( l. S! i% }, G
; I; Z8 _2 k& w6 X, _

0 }% I; l! @) z/ p) Q  Iend
# D+ u3 A. w' c. b5 z, K; V- O
% y  D( U/ t( r3 i* Q! G1 J+ {. e7 Vto update-credibility-ijl
$ K; ^4 Q' L% F7 E
5 G, w6 x% W, m& e7 O  e' Z& b; @* g;;
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。
8 P5 d' W+ d3 s+ b8 s4 h5 Ulet l 0
, I& A& u4 Y. Vwhile[ l < people ]; v2 \6 Z( F) `# Y) t8 \/ C% E
;;
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# s1 s3 ^% i  h5 k
[
- Q0 ?$ e& f" \  D! I* u7 I0 Hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( b  ?6 W9 i: c  G* c* y/ Wif (trade-record-one-j-l-len > 3)8 B3 M& e8 @+ |% ^. a4 X
[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
2 m0 L" P( B) Ylet i 36 X4 b" \7 I" ]( `
let sum-time 07 A- @3 \) a( h, a
while[i < trade-record-one-len]$ u& V* K2 p+ m9 ^% W3 {
[; e% t: M) p/ S6 S2 O" o
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' T) ]2 z6 D/ w: G8 \; eset i) h2 e- W( E/ P+ i* k" Y% M' b/ i
( i + 1)
8 c2 P3 @, I% x5 P& T' x5 X
]
3 {% \: e# Z# b: [0 j7 g- }# S1 \3 h7 Nlet credibility-i-j-l 0
: S  V6 [, w5 y; a% e% X0 l  C2 P0 N;;i
评价(jjl的评价)
( M9 Q9 F+ a% l+ n( m" ulet j 3# Z) u9 d( o- B6 k! L- l
let k 4/ Y. V) u. I2 ^% c9 @' Q
while[j < trade-record-one-len]1 G2 h8 v' |/ v. |" j' O4 @
[9 o, p7 U8 j! |$ M1 R' y+ H
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
/ N9 e) {1 H2 v7 @* p: Bset 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)
9 @0 U9 d4 w( ]8 x8 Aset j
  g( c2 |; K7 z/ S) ^+ ?  T; Y+ K, T( j + 1)

3 }* z3 i; F$ V7 F]
: `; S7 ?9 F3 q& wset [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 ))
3 @% g  G1 K8 X; u8 C1 C7 Y9 y4 Z* V- H  u3 \/ B3 W
/ t! z' Z9 r. M/ y8 o7 Y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- H3 |; c, @! n+ L( d
;;
及时更新il的评价质量的评价
! j$ y: e, y$ e# w' w" W( zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. a0 Z: a2 r$ R/ a" X1 d
set l (l + 1)
( @' b% ?& u" C* c; A( u]5 m4 y) H% ^9 q9 }; M& F
end
, o3 c; J" P+ t0 ?% ?
; K( o1 I- k* |: h+ ^to update-credibility-list2 v" |8 n6 P' X* n2 g7 {
let i 0
5 I, l! d1 ?6 G* ]while[i < people]2 m2 s, F; U) C2 T; q' ?
[  Q; S: N6 @4 u' E2 w
let j 05 j' H- G  \* E/ C
let note 0
  O: {8 ~% t" B% Zlet k 0
, @' i$ i) Q. S5 |. I& x9 q;;
计作出过评价的邻居节点的数目& Z$ U5 _! k1 }7 ~- h7 o* F
while[j < people]5 W) k5 G! [. A  Z7 ~$ N/ Y4 X/ \
[1 ]+ D) S, \: y/ b0 w+ t
if (item j( [credibility] of turtle (i + 1)) != -1)
; K2 h  [" ^1 C' D: q;;
判断是否给本turtle的评价质量做出过评价的节点4 d* ^! ~. I- ^% P* F+ g- U$ R" n
[set note (note + item j ([credibility]of turtle (i + 1)))/ J3 N, o/ Z! u
;;*(exp (-(people - 2)))/(people - 2))]

3 I5 [8 ]9 D) [+ ^+ L! `set k (k + 1)! u$ i% g, F# o; y% `- {1 ]
]1 n$ ^; b& t" I7 ^1 j! M
set j (j + 1)
* j2 V6 ^. v! ?1 T1 _8 v], M3 j* i$ a* l" Q* F& q
set note (note *(exp (- (1 / k)))/ k)
2 q8 l7 k9 K, ^+ xset credibility-list (replace-item i credibility-list note)
+ [5 n& j0 U5 B! h/ Cset i (i + 1); m4 A$ r0 u1 e# c
]  P# ]0 Q/ j% B7 [( s
end
+ L9 C  _: t) ^1 W, D4 z$ A$ W: s+ j6 ^3 [/ [8 a1 Z3 _+ r7 }  x2 \
to update-global-reputation-list
. U# ?" m+ ?% g. M; M5 hlet j 0
5 K, S! p! p# Y5 J/ _while[j < people]) _5 [7 q6 y% U2 x. p
[
  m  Y3 c. ^. S. q5 [let new 0( _0 u! @0 W2 e- b; [- z. O
;;
暂存新的一个全局声誉
8 h, H  ]/ ~7 q4 \  M( j; M7 vlet i 0) q# O  g& Q$ W
let sum-money 0
2 D# R( P, ?1 B2 dlet credibility-money 02 d# B4 D/ Q' B; M7 w: v9 f
while [i < people]
. G/ X5 {8 w- k& P[  G, n: V0 Y6 Y: u, n
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 R# g3 G3 \+ e! h2 U1 E' Kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) j; K$ e' D" R  y! q& rset i (i + 1)
. g) A* K' S0 f2 T7 K  A, k]1 U1 C" m5 m1 H1 ?! p
let k 0
" Z) S; D) Y9 e9 ^3 alet new1 0+ G  ~' W9 g8 u2 z( N5 w! t
while [k < people]1 ^1 [& ~9 ], X! S3 C
[: |6 s$ w# U, h6 P" ^
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)  x' i- n  h& \3 g1 l) H% H2 p2 r
set k (k + 1)+ P" y% s& f( i& Q6 u2 ^. {, L
]
. Z9 G6 ]9 Y+ \. Z( Y) C7 K( Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# }# g- T- h3 ~* J+ m4 j/ Vset global-reputation-list (replace-item j global-reputation-list new)$ E0 ]. E  g3 }3 z
set j (j + 1)
8 `+ `! i& |! |3 b# Q; {]
3 ]6 [! f1 H" U/ j4 \end
* q  Q: u3 P6 H7 H+ p  v0 I0 ^( h# D, j. p- R( V. v, M: Q7 m: O# J
; K  l, B+ Q5 x- |" p* a& R4 d
8 c. ~/ m* B5 O2 R, E3 Y6 u
to get-color( p0 e- n6 J1 c6 _# G

3 ~/ ]8 d# d( o" y% f, O7 y2 H1 r* qset color blue
7 T0 n1 C. F1 o
end
2 W7 m% d( s" k4 r$ |" U$ J- ^) d, r1 s6 K; S; X- s+ B
to poll-class* B" A; E5 j; C/ E; h
end" S- F# e" }" W( q

2 d! _8 S- x; T) Ito setup-plot1
6 _  r) T" n3 e  e  f" y" d# G( t3 g4 {3 H
set-current-plot "Trends-of-Local-reputation"

5 O1 V1 J+ j/ O# q2 H4 S
; m- W: w# ^. H- H4 R# w) bset-plot-x-range 0 xmax

4 n: L+ u6 R4 h# Y, \# ^5 ^/ z0 |0 b7 i# s& E- \' w
set-plot-y-range 0.0 ymax

' B  n- D0 L0 A1 Z8 v" ]% tend
7 |$ w+ C) D9 J( y/ G( `
# G& j  o9 I/ i5 [" X. s# Sto setup-plot2+ r) z" @7 d* o+ ?

) ]8 V0 u  ]: x. f/ S; \$ `set-current-plot "Trends-of-global-reputation"

2 t7 G  ?# a2 q. W3 u4 c! J8 f  S8 {& {. M5 p6 \. s
set-plot-x-range 0 xmax

5 V+ @& z; r/ Q& N1 |% }
8 w0 C- @3 n; b  S: ]2 N$ F1 Sset-plot-y-range 0.0 ymax
3 E/ }' J% c+ v  H  m; g: g$ T
end/ N$ N& k1 c9 T% v4 N3 ]2 ]
. P# u/ \8 \( X+ t# r% U
to setup-plot3
+ Y* w9 T4 D6 m9 B1 m
* b% o+ v1 ]5 Z5 m2 g. {2 Y0 Yset-current-plot "Trends-of-credibility"

' F- x% E0 S9 b: A) I  N9 L/ v1 F  g! o
set-plot-x-range 0 xmax
  A' s* F; C+ N5 @1 d8 V3 }

# r4 ~1 [% X4 tset-plot-y-range 0.0 ymax
$ ~; t: W$ Z( f
end1 \( J5 G2 ^# b7 y' @) ?
; s, [% S* g* o! L9 e5 r
to do-plots
* {: T0 f# R% w9 H" \; @set-current-plot "Trends-of-Local-reputation"
+ W3 i3 @0 q) G. i  A: Tset-current-plot-pen "Honest service"9 q/ {; A& k, ^# n: o
end% ?$ R9 J; |: O

) u8 y2 o8 a7 y: Y  q! h0 n) d( S% z[ 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.
/ H0 ?5 h5 K, K9 p+ W9 G5 }9 E8 h* ]: G4 |, C/ {5 E/ x
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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