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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:
! P) C( w7 U  F' `7 oto do-business ! G$ J- H4 y  F
rt random 360& w, a( J- i) g9 q3 d$ |' x
fd 1& x* x7 v# t9 Q5 m4 M3 A4 }+ Y$ L
ifelse(other turtles-here != nobody)[$ o3 t0 q6 {$ l, Z: l
   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.
1 `0 r) Q1 K, ?5 W% h5 S$ E5 L   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! w6 R, ^- k: F+ l" i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 H6 F4 a2 I2 _& U" I  w; e$ ]   set [trade-record-one-len] of self length [trade-record-one] of self0 w: d8 S$ \' F( E: ~) g
   set trade-record-current( list (timer) (random money-upper-limit))
9 G" y( ^6 {- g" f9 l: m: ~( r+ E$ L
' \. x2 Z$ B& U1 C5 O6 }9 v问题的提示如下:
0 G$ i  P- U) d: h" @) G1 c8 c' B& |0 K+ M" A+ k
error while turtle 50 running OF in procedure DO-BUSINESS* |( C& X0 Q3 S3 e$ p; O4 d: y
  called by procedure GO
  ^+ p0 _( m9 V% E, ROF expected input to be a turtle agentset or turtle but got NOBODY instead.: g5 n* n- O7 \2 H1 M
(halted running of go)
, X# _0 S  {: f% q& [3 D& [! g/ D4 l( |& R+ J2 l
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~~
& e8 n9 H7 v" e  I! ~& N2 C另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教# `+ [7 V/ g3 p  N. K6 O
globals[
* m* C2 G. f# g7 H* K. Q* o6 Xxmax
5 c; s! s9 E" D7 oymax
6 l0 A1 V5 P5 q. }global-reputation-list/ s" R9 y" r. g8 ~4 I: R

$ a2 O' ~6 T4 z6 U* A;;
每一个turtle的全局声誉都存在此LIST  f/ O  r9 }# i# d4 n
credibility-list
7 `4 O3 v# e" n5 W;;
每一个turtle的评价可信度; F# ^4 B! t4 F2 E4 s! R" h
honest-service
. [, y! ^3 ~) H; O! q" Hunhonest-service3 n8 X4 h" r/ t' @
oscillation7 `; \8 d5 ^5 ?
rand-dynamic) u1 S# ?0 R& u+ J; X7 |3 y
]0 c1 R" N' R+ g

3 P8 w: F* |: ~turtles-own[
6 g/ k# Z$ T- ^trade-record-all
1 k+ `) }* y; T, }, |% Q;;a list of lists,
trade-record-one组成
  z9 o! x% z' H& j. U0 ]$ B5 F2 dtrade-record-one
% A/ S" b& t! p6 p) M3 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
5 o* U6 J5 H7 O9 z) U! m, T( O9 A5 J( {8 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 e! v9 Z& x/ \" x5 P
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]
% o. Y# N- E7 @/ D! W4 |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 S! y: B9 D' j+ Z( Y' C8 ~, b
neighbor-total
- _6 t/ X: \$ [8 e% O+ {;;
记录该turtle的邻居节点的数目
) j# U: m' m0 {: \trade-time% d8 B8 F" i% s) _+ h
;;
当前发生交易的turtle的交易时间8 ~& }/ ~, m3 {+ Q- |' R! X# Y
appraise-give, V- S$ Z0 Z# I! {% R4 Z' z
;;
当前发生交易时给出的评价
! E" x: p) T, Z- p) g1 o# b  gappraise-receive7 G" q0 i+ b7 X: c! _
;;
当前发生交易时收到的评价
+ t" ^" u& H3 L1 w) @! z7 N' `appraise-time, \7 n/ m9 z6 T- g: ]
;;
当前发生交易时的评价时间
1 P! {6 H; b7 Vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 D" e4 {. C: v; k( {trade-times-total
: z" G1 r5 H8 l7 h8 c2 E7 L/ A7 s  t;;
与当前turtle的交易总次数
+ O1 n) Y5 Y( N- ftrade-money-total
0 V$ H0 a, _5 S& k' e& w;;
与当前turtle的交易总金额6 B; e( }- p) D7 j1 u- F* @
local-reputation- b% |  F  F; e" B! H, o
global-reputation, ~6 f# {% F5 G
credibility) N# C, A/ u9 u
;;
评价可信度,每次交易后都需要更新- o& u& k6 h( Y# C  \
credibility-all
3 N+ L( R. W% B  Z- S- _;;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/ s' @; B! w4 t& V2 u- D

- L0 N9 g; r# U2 b; T;;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
' x/ ]8 @  s+ k3 W) Y" gcredibility-one
2 M) p3 R, a2 W4 e7 U;;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people0 j0 H/ W6 x+ M' I7 }+ Q( i5 l. }
global-proportion
# E- L, D7 Q4 Q+ R; h! B7 ~- Icustomer
! ^9 B1 Y6 |2 r8 B) H4 Icustomer-no
5 v8 P, P: G* Q! A4 D0 c/ U* Strust-ok! t8 E# N3 i3 [
trade-record-one-len;;trade-record-one的长度
' ^2 p- h" ?5 g]# d/ M( K- j$ s' u" W9 r; a/ ]
# v% F8 f) r0 R- ^
;;setup procedure
, a/ j. s8 f$ C% _" `& ]) S  w7 W1 a( j" c4 \8 P6 N
to setup
2 d0 H: X9 |: F: Y* G0 m# F1 c4 N' t' o1 P3 T9 V" C
ca
: c7 K8 ?5 C& }' ?' S3 h( ?% O

: h2 {4 Z. j* Y3 \  Yinitialize-settings

/ ^; y3 Y$ E) @% K# j1 h! ~5 }8 s* F- E/ F; A- i
crt people [setup-turtles]
" A; a, }5 C( Z7 ~7 u' g. n, w% J
! O8 Z. Y$ g1 s* D, e! q
reset-timer

4 u9 k3 ?6 I, T3 x" _! Z4 ~# I+ Y& r9 U2 O
poll-class
9 U) n/ y; j: D3 K# s
2 ^$ c" H$ \3 z
setup-plots
9 i) Y1 V; h' Y% r4 y% y# q
, A- _; V- p2 j& V2 \4 s! ^
do-plots

, {1 e1 x, y- r* E. aend
7 F, `8 \' C. u0 E" B7 A7 F, }% h9 }4 d
8 ]  S1 x7 X6 t  e+ dto initialize-settings/ G7 ]  x& e/ |1 S

6 n0 T5 \( n2 Rset global-reputation-list []
- i/ I  `7 U% T4 `2 Z5 v8 I2 i8 l
/ h* u2 \9 L& ~
set credibility-list n-values people [0.5]
+ Y- `( b: ?. e; \3 t& b" T/ B

0 B% O: m) @* W- x* e/ ]set honest-service 0
6 A+ ~( g4 ~# D3 U* c3 R$ f

) Y- ?; K. A/ p) K: ^set unhonest-service 0
* f2 T9 U' p; b1 M

& Q, s5 m. s/ I) ]1 Tset oscillation 0
9 O9 b( r1 f7 k& i1 j

! B* D  C3 X1 q( I" ?set rand-dynamic 0
+ \- r0 B: j: B3 a2 S& }
end
4 _8 o$ x- D9 R3 S5 D* `' N) K7 {, _6 R
to setup-turtles   {. g4 y: d5 S0 j4 }! w8 b, A4 c
set shape "person", y, l2 w$ P7 h1 e, E" ^
setxy random-xcor random-ycor
0 D8 w, l' R% u: qset trade-record-one []4 s8 z1 B6 s" |: \) Z1 \! G
) ?4 o- L4 J. B% b+ c
set trade-record-all n-values people [(list (? + 1) 0 0)]
2 I' I1 Z' u6 O4 @$ B7 w5 Q% F

2 ?" ], l7 O5 I5 e; wset trade-record-current []
# U5 I  F3 {* a  o+ C  c* iset credibility-receive []
7 }+ l8 y- \3 f# M% c# f" c, Iset local-reputation 0.5
/ e: O1 T* x5 i7 S3 oset neighbor-total 0
$ x+ H" w, P1 K- E. q" mset trade-times-total 0
+ h4 h  N* K0 ^% V) Bset trade-money-total 0
9 Z  u" _- d: i5 x3 ^set customer nobody
9 w* m8 U2 A5 T* Z3 mset credibility-all n-values people [creat-credibility]& h6 o1 _8 j, V4 U# e% a: u
set credibility n-values people [-1]9 ?2 \6 N: }; m" g
get-color
0 u( K, ^( R. w* r. D
- ]3 C; P9 @, }5 z
end
7 E5 ]" O6 u; h5 ~: N5 ^6 K7 T: Q* r5 ]* E  o8 |0 ~! v1 Q  B
to-report creat-credibility
1 a" W1 A7 _* T. C5 ~report n-values people [0.5]; n) a0 ^3 ~8 r) [0 w3 Z- u# L
end  B% \, S3 ?4 h0 C) L, \

. i$ g2 t" S2 jto setup-plots; C8 [0 ?+ N4 f0 j& p4 h# E; n/ _
. t8 r& G( A. m. i; O3 ?
set xmax 30
& V- z4 y% K: }6 J% Y
) z/ b" d0 U1 g4 ^2 Z  @
set ymax 1.0
) T1 E9 z. k7 i+ x7 c
4 M7 A" `/ C0 r( k9 `6 u  O! i
clear-all-plots

  q% @" @/ u  t% j
# ^* k9 U9 t. R6 l" isetup-plot1

# S( g* V: o& h: L! L7 m+ U, E
. ?+ c" Z6 s/ P6 i7 Hsetup-plot2

) j5 R  h+ |7 n; @5 q
% p$ |4 U  s" H; |setup-plot3
1 S$ n- }* }' \7 [; K8 f( p% b
end
$ Q2 ]5 z8 G, l0 L# B
2 Y- C4 n: n/ ?+ ^+ Z( h1 Z' w6 T;;run time procedures
3 P+ t! O/ {+ H9 A0 `. Q2 a9 z
& x- y: c" L, {, W" u1 D4 S4 eto go
, K% L, `8 R4 }# v" d  [2 B1 f  h4 a
ask turtles [do-business]

0 I3 K( S0 d- k. g" r: uend, ^5 g9 g+ u3 w- Y6 U

) I% ~' r0 v; c9 _, J1 C' Lto do-business % F1 O4 O% [9 n) f0 D/ _2 Q
2 B( T& K' N! d( H
" z" p/ ^' X. p& A, G
rt random 360
8 y9 W% u2 K5 X' |/ q7 ]9 T
! U9 D5 [) h3 o4 z  w6 a
fd 1

! r) R& w1 v& ~$ R" @
/ B' p3 c" f* t8 Hifelse(other turtles-here != nobody)[
8 M" O* S, e3 a  Z+ e% L
' s6 U6 {$ l3 ]3 ~! n! ?  f& Q
set customer one-of other turtles-here

: m8 S$ _" z% K+ d& |4 l+ {: V  J9 m8 N0 m* m1 H: A( T
;; set [customer] of customer myself

! z( p( u4 l( b1 B1 x
* C2 q$ n5 P# L, m' e# i$ z( wset [trade-record-one] of self item (([who] of customer) - 1)
5 g# ]- [8 _1 l# G4 Z7 V0 o3 j[trade-record-all]of self
! j0 y1 O* @/ `# M5 @" l;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; G8 M* |" b7 i% g& F. \
% u9 u( D6 |$ w! A4 E* t4 A6 _
set [trade-record-one] of customer item (([who] of self) - 1)
& D2 o% U# d9 p7 ?3 u3 m! N5 Z! P7 m[trade-record-all]of customer
) t: \# W1 g; y- v- b/ w

: \  b. @$ [9 W0 C1 V  xset [trade-record-one-len] of self length [trade-record-one] of self
& ?' ?; y8 S" \/ p, k

2 ]8 V; Y8 k% y! e- w4 Yset trade-record-current( list (timer) (random money-upper-limit))
2 D2 H7 U3 @) }/ B& \  j0 D9 J

6 I" C# ]; {8 Y) d0 i* Dask self [do-trust]7 v; ~) Z  x) h# V
;;
先求ij的信任度
$ @9 p# A. e2 Y3 I, m& {
0 B' a' P7 y2 t/ R' mif ([trust-ok] of self)
2 H& {. r7 ]) ~; }) d, q! e* |;;
根据ij的信任度来决定是否与j进行交易[" z; H$ c5 Q5 V- z8 [5 P
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# X/ w4 j8 d* I" }

! i" X" Z2 A! j4 N& t[
$ o, M- }. g+ ]+ \: D

4 O+ G! ^+ [. Odo-trade

3 U# w. H! `' v$ Q4 P, u4 O4 C. v9 G) ~% i4 f# O
update-credibility-ijl

$ i/ P  N$ {) [7 \; t1 ^: u6 c7 H- r7 x* _9 q; ^8 Z9 l8 P& x( {
update-credibility-list
  t1 `" W; I# V/ S5 n2 u/ h* q
' L6 r& N8 e1 D; B9 V, D* L& b

/ G' ]. f' j. i  r% ?( eupdate-global-reputation-list
0 J$ m3 h/ n* b# O3 I
4 n6 L  I) V% R8 e& h( z
poll-class
3 d) b4 i. X6 l

3 k% b7 i% Z. Q5 [% b4 S8 Sget-color

  x6 d* f! [& [. S: t- E- V6 }0 `$ E' h  k+ c1 `: ?
]]
* |, i+ F  E' H2 t6 u" n+ E
  R: M& E( g9 K5 u;;
如果所得的信任度满足条件,则进行交易
; A+ E% Y- W6 Q
/ z4 ~* ~1 L( s: E1 [, r+ \2 o9 K[

; r9 R; z+ T; l/ L% `1 ?8 g2 A- ^. T/ y8 B
rt random 360
, |) Y7 d, x7 u

2 B8 f; S3 o& M: y" t) Mfd 1
4 Z9 b+ y) {1 I

% m2 v3 N/ p1 e9 i' w) O]
; {  G* M! K! U5 \) {! D7 N; }

& C' ]* I. {! K4 Vend

+ ~- y: G( N' j- M4 z
; A2 \5 _5 U2 Y$ a: C6 }. a: t5 Hto do-trust
( W1 K/ _$ L+ tset trust-ok False7 G' [/ w' I8 M7 v) [5 [

5 h1 X" |2 }! g5 o
& G! ]! W) J% x7 G& k( s) c
let max-trade-times 0( K7 p, f* m( X% T) |8 }# F
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 q- C' x0 s& I9 h5 Nlet max-trade-money 0
3 O+ ]) b+ k0 |! c# Xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* g% I5 M# ?4 y/ b
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" S( ^* {9 A/ h( d$ b

: o, Y, D$ N/ S
6 u4 B1 X, ~. M) N2 O
get-global-proportion7 ~( ~; S3 B2 @! M' G0 O' |" G
let trust-value; A& O4 t& {# x  p0 U
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)
8 [* f( [' E7 `" {) m
if(trust-value > trade-trust-value)# v1 G0 h- Z% E" \
[set trust-ok true]
6 c% D$ r2 B8 C6 Y* Wend5 n" T* I1 C7 u' [8 e& k4 e& }  d" |

( O3 D4 P0 X* `; G+ b( rto get-global-proportion
4 K6 |  K" p% x& _- Sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), ~! a9 H6 I/ n3 }( t2 a
[set global-proportion 0]
+ ~. M+ }+ L& W. L9 i1 p$ b3 }! p+ Y[let i 0
" p2 a6 S5 Z5 Z0 t4 T3 n- P2 Zlet sum-money 0
! c7 s' U8 @, S) iwhile[ i < people]* d1 M/ w9 g. H6 R
[8 V4 x, r, n. k4 Z* ?8 A
if( length (item i1 @" b# B9 s( n' I
[trade-record-all] of customer) > 3 )
6 T1 }) w5 i5 T- e
[& J2 A9 P! }. t  k! Y* Z3 c
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  U# t" I' |2 e% x2 j% w' V2 g, a
]
  P) y8 j0 Z9 `& Z' []
0 t. V/ X7 W5 Y& @" E/ elet j 08 I3 j* I% L* S8 U5 V3 ~9 }; R1 L0 N
let note 0
5 m' }" S0 V; J! ]while[ j < people]# \& {! e, {  F3 H4 @* C
[
; k; a6 P$ ]: `5 Jif( length (item i
7 {1 M  f( L2 ~9 x/ q1 J) L[trade-record-all] of customer) > 3 )

/ M( d: [7 l, x5 l3 n) [[6 B3 r7 K! t( G' L! w
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 B6 i: ]+ F8 u5 E  S  Q3 T
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( ~9 G3 E% B7 F$ S1 Y9 B5 E[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# L3 ~0 N2 W, s5 ]- H( G: _
]7 J; p5 F/ e! P# F( i
]; A0 ?% W7 w) b6 A
set global-proportion note
! e# e1 A" a8 E2 F7 d5 T]
. n& l" E! d1 |, d. ]1 W8 Z4 `+ Kend0 z  |& }6 \! J9 b% v

" f2 t9 }2 x6 Q4 h8 R0 }& pto do-trade' O' L3 u3 A  L( \+ `7 Q
;;
这个过程实际上是给双方作出评价的过程
1 f9 U# k6 t1 L( H$ X7 C/ mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 t# O7 x( o! q- }: L- b0 `6 {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ n" t1 |1 P2 i* l, o8 yset trade-record-current lput(timer) trade-record-current( F9 {9 J( j* ~
;;
评价时间
$ C& y1 G# b+ h4 B- Y4 @ask myself [6 f5 m; r8 o: R' A
update-local-reputation2 k7 ]8 `( f& [# T" e
set trade-record-current lput([local-reputation] of myself) trade-record-current. O3 K( B9 j8 [9 n! Z
]
' P; O0 P' }9 [5 }set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ {' f. }/ w2 N$ H2 b;;
将此次交易的记录加入到trade-record-one
' @+ m3 V+ l0 @, z7 U6 gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! i3 f7 z3 e# e" ^
let note (item 2 trade-record-current )
# I* x+ _- W5 s+ l; {8 s& Iset trade-record-current
7 F% L2 e) o# W6 {* Q, E" @* @" v* a(replace-item 2 trade-record-current (item 3 trade-record-current))
7 e: G* h( ^" F- v" K' K
set trade-record-current, ^/ O) a& T2 U% A( L
(replace-item 3 trade-record-current note)
/ c$ y5 U4 G4 A1 E& ]5 e
: O. F: g# |! _( c1 b9 b3 t
' Z0 R4 J* `2 p- u. i8 W
ask customer [3 X" F1 Q+ F$ b  |
update-local-reputation4 {8 D" n9 l0 E" B  V2 k
set trade-record-current: v4 M% i* d$ s9 v% Q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 k6 B2 p/ O1 X- Z+ q. A]! |% ]3 P  p& @: L$ @/ W

& w+ |( n; n7 u2 N1 W; M

  t3 w$ @# {) T. F: H# X6 w2 bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 `$ t% x4 ^. ?6 L" c

$ {" e/ R7 n' Z/ V. D9 k2 kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 Q  p+ I3 \4 a( {7 u+ s2 i
;;
将此次交易的记录加入到customertrade-record-all, _6 d) X" w- _  R
end4 I8 U: h* j4 T0 r; Q1 J2 k
. `1 g) `9 P1 f
to update-local-reputation
) G: t; E4 N. g# Bset [trade-record-one-len] of myself length [trade-record-one] of myself, H0 s& H5 o1 w2 n% x2 G
. t& s8 d( C% G
9 J. i7 K4 Q" O2 u1 v1 ?. J( S
;;if [trade-record-one-len] of myself > 3

, i5 I. _2 c# wupdate-neighbor-total
1 @$ \" r+ p9 H- B9 \;;
更新邻居节点的数目,在此进行$ k6 f! @0 U/ O6 Y% ^
let i 3) c3 N) p6 N* m$ \5 i3 z5 X" G/ M: h
let sum-time 0" V# h* E" d! N' @
while[i < [trade-record-one-len] of myself]
# u( s( X/ ]$ [[
: v7 D; A; [9 z4 S( L$ g8 m! nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 N& e. e% g" B$ g+ j
set i
  ~) D- Q+ o$ Z" ~+ j. G( i + 1)
" X9 E/ }, {; s$ F: P: U
]8 u0 W4 C4 I8 P# g% o# o. ]6 z1 t. x
let j 3
8 p/ D( m* [4 jlet sum-money 03 o' ]  s- z8 v) D) Z1 g
while[j < [trade-record-one-len] of myself]
( F% \0 J) E" G4 S" l[* k, I$ B# ]# U3 J. h, L) `
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)
% \2 x0 K! z* R/ U) pset j" [: s1 D4 E5 m5 w
( j + 1)

4 e# W0 L7 O; P  u$ J]! @* f) W; u. s4 I! @: \2 C
let k 3% E+ v) A- {) P2 A
let power 0& S) k# y" Q) b3 f% ^  k. F
let local 0
0 |! M; h* l: t- owhile [k <[trade-record-one-len] of myself]' i' c$ V/ H& c" Y# E' d/ g$ @( r6 s
[
* Q" h9 i# B% k" ?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)
: }8 a# O7 |5 oset k (k + 1)- U9 L) E( E  y/ M# K
]
8 U2 A/ G4 T# M+ O9 ~7 p/ L1 M( W* lset [local-reputation] of myself (local)+ S: p, q# ?* W
end# Y7 n  {2 A; G3 h2 Q3 R4 M

. S  b7 m. k: J: qto update-neighbor-total; w0 k( [  ^& B

& Z0 f0 R/ Q% tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) M+ {8 T* l3 k/ C0 Z5 K9 i/ g% s

) K" M& v" y$ k) N; ^/ e

8 I! F% _+ o3 Qend
+ D: S3 |/ d9 Z
3 B! H2 W3 q( W+ Z7 {% N) h* ato update-credibility-ijl
+ ?2 n! [5 {' Z+ G, m* A- T
, J9 v! a; F# }- a" P1 Z4 S4 k;;
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 K8 ~/ g: B* t8 H$ Hlet l 0
, @& X% C/ S) Kwhile[ l < people ]  @* E2 R/ M/ C2 w0 v" n
;;
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7 O8 V  n* i( J: @$ F# ]# n
[
& i$ b+ D+ N3 T/ ?3 k% Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 K/ [/ G# n& ^: R" w3 c( Eif (trade-record-one-j-l-len > 3)
; P' v; ~" {+ n# W; s. |; ^  ][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
- k8 z3 |& F, Tlet i 3* p. b& j% I7 u  ^/ k
let sum-time 0
! \$ W4 X+ Y9 z9 l% }) }. Rwhile[i < trade-record-one-len]% z, [5 ^2 n4 G3 L, @# S& n* x
[/ p( e- U9 [) b+ n2 k
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 v: n0 \) W) _+ Z% M5 H
set i$ ]& ~% H% {/ u9 c0 t- E/ q( i
( i + 1)

5 Y0 ^$ m6 V6 b8 {6 o! ]: b( ~]
( d; m# H2 f1 [! Jlet credibility-i-j-l 0
5 e- s. u7 X; r; k$ n;;i
评价(jjl的评价)) f8 Z7 B2 J+ c/ u! U
let j 31 Q! n4 A! o. H
let k 43 M; o7 o( n. q
while[j < trade-record-one-len]6 O3 B% ]. j& m
[
0 p; W3 s9 \* _/ N: Swhile [((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" j) }1 X( x. o% v, 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)
+ ~' ?& q- L* o$ d' o+ m$ a; kset j% X' ?4 |! u) t; l6 ]
( j + 1)

2 x$ H" {5 H( h3 m3 m3 z6 Q]
" j; G6 e5 Z3 m; c# oset [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 ))& ?5 {0 i. B  ?4 I

4 `! }# k* o: i! L2 T1 f2 E3 h6 Y

' A. {1 N% N( p' ]. P0 r* k6 @let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ s% j* g( |- G3 Q;;
及时更新il的评价质量的评价* `! i3 w$ E. \, O
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; x! |6 `7 @( s
set l (l + 1)8 \, q0 w8 V* Y
]' A% z8 _/ p+ b9 d+ R( \
end
  ?( R5 a6 j+ I  Z5 s: [; F1 f$ K% o0 w& E. G
to update-credibility-list2 z- X/ {" E0 k; p
let i 0
/ ?( w) F, R( v* t% E7 b) `! _while[i < people]
2 X( N7 X. k* A$ ^! Y[
6 [1 |3 w+ z/ ]let j 0
* Y9 G0 S* ~" a& S8 \5 \let note 03 F# m( C, ]2 `2 h5 Z9 J
let k 02 D9 g# {- J: b: d! ^( ^8 L9 ~
;;
计作出过评价的邻居节点的数目
" C- p* }) a* c8 }1 ?, dwhile[j < people]( i. W# B" e8 r8 x  t3 W8 T
[( U2 r( ~. V* x" Z9 u) Z2 Q
if (item j( [credibility] of turtle (i + 1)) != -1)
1 e. Z' R0 S9 D+ S' e1 M" h;;
判断是否给本turtle的评价质量做出过评价的节点
4 j- k) P* V5 B/ a[set note (note + item j ([credibility]of turtle (i + 1)))$ J1 B. g( s9 o. k; n- I
;;*(exp (-(people - 2)))/(people - 2))]
: X5 u0 S- d( M. G6 Q# j$ Y2 x6 P# ^
set k (k + 1)* s- z% w+ |! ^$ H2 G/ O
]
7 N9 f8 r/ M) a; F) f) K  H0 Sset j (j + 1)  p0 H; k6 J" A
]6 M5 {' j) `7 \4 C- b: z; z, i
set note (note *(exp (- (1 / k)))/ k)) t. w6 Y+ V% ^, _! D
set credibility-list (replace-item i credibility-list note)
, d3 Z0 ^0 T+ U- J0 b! m* c+ Bset i (i + 1)
) l! t+ j% j) S, c% ?  x5 B6 x6 l]
5 @4 N; Z( p5 Z  B+ ]4 r1 Tend
/ L8 F% d3 B' x, f7 a
0 y! i- R4 e" \' y3 {! I. f8 j" [  Jto update-global-reputation-list. V9 M5 k% O/ ?( Z
let j 0, D% j5 K) j& v. T( R: W
while[j < people]
8 Z6 e- X; ^- b# c[( U' [5 X5 C/ E3 a8 I
let new 0) ?- r0 g8 n* F6 L  d  u: M0 c$ H
;;
暂存新的一个全局声誉, t+ u- Q8 L6 P- ^( q
let i 0; e( `+ Q9 f' W/ j; d
let sum-money 0
! M3 E8 K/ a# H/ Z, olet credibility-money 0
1 a: U7 r: |6 Nwhile [i < people]
$ \* r- N* z$ @1 b. E, D[
& A! M9 E! G- l) X' {4 mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 n+ F% n, Q4 G1 Lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 [  Y- I' c1 ^6 `
set i (i + 1); w; H' @. `+ b$ d/ I: @
]
; o8 n; X% r' U: w: wlet k 0
5 `1 _1 f6 F4 Y) e' blet new1 0
( Q' D0 p) D* S+ b4 }while [k < people]' e6 k5 z; L4 }/ Q" Z
[
2 d( Q- K7 c8 a9 v7 E7 g0 g  |  p: jset 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)! y* a8 b0 z4 k- {1 E  @, S
set k (k + 1)
  Y7 f  y! q# k6 {]9 b1 g5 z: `# M8 y7 L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ V6 a6 j* F* V0 A# x4 t
set global-reputation-list (replace-item j global-reputation-list new)
7 o/ m+ Z7 |. {# f; Rset j (j + 1), P5 a: G. F5 l2 c# O6 z
]
7 r8 D3 `2 U# [/ f; _end
# `) s9 \% I& W5 |1 S9 k; w" W' ~% W
. Y& m' e, F# C% t7 |* M! K, r6 U- d+ r, ?0 `0 o- }
- U- W9 b7 S" j1 N4 c9 v
to get-color7 P8 `* ~; ^1 i2 V1 x1 {; x3 j
% v/ [+ V: e, n# N! T+ p( N
set color blue

4 P  d0 Q" y2 R' k& Eend
: f4 `- _+ b  X
5 c/ Q$ D2 `$ Vto poll-class# \' C/ u9 y( _0 F
end
1 ]4 V$ Q  t, u( K6 C0 i. O& Z, U$ G
to setup-plot16 T0 H2 z  ~+ e3 y* t
! U+ e% I( Y6 N+ b% t$ y8 W
set-current-plot "Trends-of-Local-reputation"
. x  H, s1 B* A' s( D' l( x

" b7 W: \$ u, \# `1 z/ L+ ~% R, o! pset-plot-x-range 0 xmax

7 q) J* ~/ }! ~# ^- K. l# x6 _6 @4 k
set-plot-y-range 0.0 ymax

" ^. x% H3 B# J0 B, ?, j3 N4 fend% b1 [6 ~8 ~9 ?0 y4 t6 V
9 g( v" w2 f8 _2 n& v% m
to setup-plot2# r3 T, s$ {6 L. t# ^# S6 i3 E' B
  W% _3 o9 q! u. Z" e2 g9 `% ?
set-current-plot "Trends-of-global-reputation"

. l/ j0 K* I- C0 s8 W8 q- J6 K9 {+ s
set-plot-x-range 0 xmax
0 ]/ w. r+ N8 U% `- [2 g/ M

, E# d/ T8 L2 i5 T$ K; w- sset-plot-y-range 0.0 ymax
( `. X* r: Z3 x: O# e9 H
end
- X7 f  z0 |5 P' s* j6 m5 g8 V  C8 ?; \7 V4 d* P8 k4 ?
to setup-plot3
6 m* R; ^  a: W& D
3 c3 P- U* ~) V+ S' [set-current-plot "Trends-of-credibility"
( u, y) k' W1 F6 R3 c) X$ n
0 J6 s0 s, k6 y
set-plot-x-range 0 xmax

1 m6 x- E" G8 S$ C8 Z2 E3 k/ b" S# Z5 K
set-plot-y-range 0.0 ymax
4 N6 i( t8 x' R4 t1 q7 X
end
# x- j2 S5 u! \$ O/ _* ]/ m/ I9 h" B5 R8 P+ l0 y
to do-plots, a& `$ n, L2 E& e; x
set-current-plot "Trends-of-Local-reputation"9 j) F" n: e* o, _4 |7 e) r
set-current-plot-pen "Honest service"; U9 B4 p8 b/ `- [1 _
end  k2 }6 I2 ?, `

/ U1 a9 q7 p7 f3 O[ 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.; b( \9 K3 p3 G$ v; \/ ~

; A2 o. f) ^: {5 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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