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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:' O6 M, N# I1 ?& x/ {
to do-business
/ m! A0 _' W+ o, H7 i rt random 360
2 p+ m: v3 L' s5 e; J fd 13 k0 c. K4 r5 L0 p2 n0 {" F
ifelse(other turtles-here != nobody)[! c8 k. |6 l7 P/ [
   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.. V, G2 j, ~& e' K4 v
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 S7 a# z. A" c. Q3 a$ q# M, e
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! M$ A+ w! R& j. q3 x9 R
   set [trade-record-one-len] of self length [trade-record-one] of self6 w2 ?  U4 a! N* n
   set trade-record-current( list (timer) (random money-upper-limit))+ k: ~6 T, V& C9 c+ s5 A
! x' ~8 X7 H; t+ @1 ]+ \4 P- Y
问题的提示如下:
+ d1 l3 U7 ]# d# g+ m% @7 F% Z$ D& `) @+ f: |( ~
error while turtle 50 running OF in procedure DO-BUSINESS
5 N7 H0 w" L; t2 W. N1 N  called by procedure GO2 S0 ~0 n$ N: i# K' d# ?
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 u% m, |6 W# c% y4 q/ B% M
(halted running of go)
: M1 `- h1 Y6 n( C% t
7 b9 b* a, L8 e( P1 G" B+ W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~~' `! e) S( i$ z8 d* W, V
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# O( \1 T/ @$ Q1 ?( S/ |% m+ I2 I
globals[
* o4 A- l  W% N6 Pxmax
- |% \; A/ h/ Qymax
) S& V2 E2 E$ L* ^4 C; X( qglobal-reputation-list
+ ]: x4 p& f* D5 G& l" b0 C6 {( \
: W3 O3 K8 r6 O;;
每一个turtle的全局声誉都存在此LIST5 [/ \, k0 S( O
credibility-list" a; d  N: x1 R- N
;;
每一个turtle的评价可信度
) t2 S- L1 K! o: a/ Ihonest-service
  N9 n' D2 ]. @) K4 Kunhonest-service6 y% [( ~& ?' q" O8 a
oscillation4 D$ N& E, P" c6 k* i+ Y5 t% |
rand-dynamic
+ z- }4 q# p- d) x3 n/ a]
1 x; z; M, V1 q9 E/ [
9 m! c+ }1 r6 Uturtles-own[
. n+ N; R4 _3 M' g4 i0 qtrade-record-all
/ [7 H8 K+ Q8 N8 P- o;;a list of lists,
trade-record-one组成
! K8 d; M3 _6 ~: b; Z1 l% c; Dtrade-record-one9 q5 v0 F% y& [( L5 w) |7 E
;;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 v) o! x9 a" M" c8 ?
/ Z" z: j/ X  q! E( E* a- i0 r0 u;;[
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]]' x- n# I$ W0 R; f: j/ g) x
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]
2 }  o  r! V& Ccredibility-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. w( p; {+ ~  x, [/ D; }5 I. S, `
neighbor-total# Y; D; g) n* u2 s7 {4 a+ C7 F
;;
记录该turtle的邻居节点的数目
0 g6 d7 q& n& m; J; jtrade-time
/ o. r2 P) t" G8 q8 w;;
当前发生交易的turtle的交易时间! m6 Y9 u" d& x$ O( o
appraise-give
5 H% Q" k2 O4 O$ f0 c0 @0 ^& S" w;;
当前发生交易时给出的评价5 w/ ]% V  C  \. X$ A: x
appraise-receive
) c6 ?' L: J+ V6 [# P6 ^8 F;;
当前发生交易时收到的评价
' N4 u. F' ~! Uappraise-time- ^2 k0 I; O- o0 X( u  q5 k
;;
当前发生交易时的评价时间. ~2 H: X1 L% W/ [* l5 f+ M. W
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ [6 ~9 r7 L7 B5 e* itrade-times-total) h) q7 o$ p* u( ?
;;
与当前turtle的交易总次数# V# e4 L2 h( Y, A4 U
trade-money-total
6 O/ k5 q+ t% P6 v;;
与当前turtle的交易总金额
8 D, _3 P" u' I# ?0 g( I0 Blocal-reputation
& D* C( ?6 q9 @; b; v4 e  bglobal-reputation# W( h! d: s1 @2 n4 ^2 G6 G
credibility5 B3 ]7 r) f6 e+ Y6 `, @7 J) e
;;
评价可信度,每次交易后都需要更新
. j) B7 @. `1 `0 t/ E' t% p" fcredibility-all
0 [  H8 N. I, k4 @) [: B;;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2 O7 m; |4 V3 d. o) H2 T
0 H# Y, u3 T1 R& G8 N; 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
& N) `! W8 a5 F7 Z7 W3 {credibility-one" m" K3 u2 l3 W1 G
;;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
9 A# m+ S1 u" B; A0 Jglobal-proportion
; b$ v4 p8 W- @* n: ]4 W/ d" rcustomer
, i# x- ^! r; J+ Z! P- scustomer-no
' W2 @, ]/ c& T2 c& Btrust-ok
5 a, ^3 g, F& F7 y0 _/ Ktrade-record-one-len;;trade-record-one的长度& ?; T7 J/ h& L4 L' I  X) E
]4 v. l1 _0 s1 ]7 G
  Y1 D0 n& H7 G, s/ s
;;setup procedure) x8 y" q/ w; s6 T  r
7 n! }" Y) {/ X7 L1 Z$ i' |4 p
to setup
" J2 u3 F; `# _, [& ]  f# Y  f- Z  N5 B3 }7 y9 h5 g+ c
ca

' K. t& W1 e/ l* y
+ p& l8 o" Q/ R4 C  X0 E  x/ ]initialize-settings
1 U4 R' ]: g6 d# Y+ V' M
0 r: P; S) J) h0 o
crt people [setup-turtles]

0 }8 N- Y, E# l5 e" J4 R% e3 S# R% s% z# S
reset-timer

' {2 ]4 U; A) V1 U# Q; p+ Y  s
4 C* u. {! z7 q$ S9 V) h; h6 Lpoll-class

; H4 x3 [) w4 |9 G7 T: \5 o; _5 x4 u
9 C! v7 O( D7 F( }7 o' [6 A, Tsetup-plots

, l7 ?* f2 T# Q' N: i
' M% |3 ^: Q' V5 U8 j' Z# c) Edo-plots
8 Y8 U! p+ S7 H+ f7 L3 u6 t
end
. y* j+ p/ G8 ~8 ^/ k5 f# g8 l
to initialize-settings
; \7 [4 C$ O, Z3 _; L. Q. U/ X' S9 c0 ^: f+ a9 \- m" _7 T& R
set global-reputation-list []

; `, o7 D$ F. p5 h+ \& {3 t1 ^$ }- ~7 y+ w
set credibility-list n-values people [0.5]

' S5 U. L, j; p; t# d; M  K- |/ d: A' h
set honest-service 0

2 O6 j- |: E( A
  ^6 F* [5 I$ N% w1 Q* l' P4 G4 _set unhonest-service 0

# `3 d5 z& J' d$ O- E: k' Y, R  A& J" N' `$ k
set oscillation 0

( A5 V. c  B" o7 V, f$ i0 z' ]2 J5 |- d/ S/ Z7 R( N" k% d5 n
set rand-dynamic 0
1 q, T% K; t" L, _# Q. n
end
. t9 s, J; A. v: Z
3 y4 p* L$ o  \to setup-turtles 9 _" a4 K3 D( L) P  [) q8 T4 `4 C" {
set shape "person"
, Y5 Y+ D' k" Wsetxy random-xcor random-ycor
& s- J* C, p" G4 x3 jset trade-record-one []/ N; j' P7 Q- i) i8 G
; b. M8 R, z$ O' N- s/ k. I
set trade-record-all n-values people [(list (? + 1) 0 0)]
7 @; ^. L, R, ]5 E1 w- o; C

! Y5 r4 {/ Y& h- T' V* |6 D$ O9 Rset trade-record-current []
  |" i7 g1 m9 _, U0 Hset credibility-receive []" U3 f  s% F& n
set local-reputation 0.5
4 V, b0 g$ T0 g1 a3 I4 @set neighbor-total 0
: }# b7 {1 X2 {5 mset trade-times-total 0* s, B* D9 \/ Z2 l" |2 z
set trade-money-total 07 j; y1 L2 A) B
set customer nobody# l! S" k* |0 g  {  u  _
set credibility-all n-values people [creat-credibility]; S2 [' b7 z8 j! Q' A8 c
set credibility n-values people [-1]
8 |+ v9 m( T! y2 D" V, mget-color
; E7 k6 v" V- Y+ I: l' E9 o

/ c( J1 z& `% L( B5 Z9 Cend
$ I0 A2 Z) g8 s, W9 {8 z: V% _4 m$ r- u8 }% y
to-report creat-credibility
8 @0 D  M. H1 \% Creport n-values people [0.5]- {; v( R4 I; D- t4 B! f
end
0 {8 N/ p" j& H7 \* k( b4 h
0 V$ q8 A  n: }( K$ xto setup-plots
& ~! H7 z/ L; S0 B' E& a( `
4 Z0 T; g3 ], B! G1 x1 {& D  v, Uset xmax 30

- E) r% F4 `3 F+ _: j0 W; K% Q! z. d/ n5 A' t2 D
set ymax 1.0
* S2 J4 V1 D1 W6 G' u/ F) A# L

+ b4 Y+ W/ s- x8 w" n: rclear-all-plots
( W9 ]" Q. t) f) q) B

( u, J. L4 M) l/ ksetup-plot1
4 g% M6 N: a% v/ u$ R) w
# y2 k* c; z  W8 ^. W9 F
setup-plot2
. l/ N. F! k7 H% o
* X* }' _2 h$ c" r8 J
setup-plot3
8 Q! A$ G% V+ f  P- z
end
: i2 y: C" q+ u. o* |
, q) X! I+ |. i4 ]/ J8 d, }4 J8 B;;run time procedures
$ v* M5 a) `0 X  X6 K7 M8 N1 p6 z
' e. u9 h: \0 f' m; P5 Vto go
; q! |3 T: ^! w9 P) O9 b* P% P& n* L7 G9 z3 Z
ask turtles [do-business]

' r: P/ D' I* c0 ]end$ d5 f% B, V' D5 w

; D  u8 I2 ?5 J6 Ato do-business
$ K( }- t0 h7 d& p$ a# g/ ]0 k2 l2 n0 ^
6 \1 L3 ~5 s" E; Y$ R
7 e; F1 L" q+ J/ ]
rt random 360
" ^! G* x' d8 n- ]1 g

/ b5 t, G6 t5 x; [9 f( V/ Ifd 1
& ?- J5 y4 [$ w

# Y! v( _  O( k4 k1 l3 q# {% Gifelse(other turtles-here != nobody)[
/ ~( i/ z6 J( `0 M+ k
& q( }; N' b/ ]# n+ C
set customer one-of other turtles-here

3 G) Q' ^# x! k2 y- i# Y* o( @! t5 ^! K# u' Z
;; set [customer] of customer myself

& o5 _( s) g+ i8 X% V8 K& _1 Q# v( h+ P2 q  G/ z9 e
set [trade-record-one] of self item (([who] of customer) - 1)
# U1 _. N9 w- R[trade-record-all]of self. e, W7 C, G, U# N
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" @3 w& t% _9 Q  T  k2 w4 U: S; E

8 x: C0 S+ I' wset [trade-record-one] of customer item (([who] of self) - 1)& p% l1 x# p) [/ [. H" R- R
[trade-record-all]of customer

! J( |, F8 w+ _
  o8 w7 E  e5 P2 Q6 A% \set [trade-record-one-len] of self length [trade-record-one] of self

# S, ~" F- S2 i) @9 F6 P4 Z8 P- N+ K' h) g; W) P, T
set trade-record-current( list (timer) (random money-upper-limit))
: |3 k2 N; M; A2 N+ H; Z& x

) H7 A6 M2 p1 B6 Pask self [do-trust]" o4 K. |% y2 T% y. `
;;
先求ij的信任度
. t! ?( f: y2 `8 K3 K) w; T6 A9 ~! j
if ([trust-ok] of self)
- D9 V* `# t6 ]- F* r, l. w" O;;
根据ij的信任度来决定是否与j进行交易[; U# v% z5 r& X7 Z: ^: T) t
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" R* @5 R. L, P! u
, {* ~% {* H3 c" l* a0 i[
* a( d! e) c( R/ [2 C$ I0 C) Q" N. R' u
7 c. z, }0 t7 |2 r, S
do-trade
) g5 S1 O) Z. b

0 c+ m: W# G& fupdate-credibility-ijl

1 b; u- N4 b8 p6 V' u9 \! Z0 W
update-credibility-list& S3 T! @( m3 l: ]. l2 s; ^, v

" s+ R' O; q( f5 L# G' J6 s# s+ P% \1 H" e
update-global-reputation-list
/ t, C1 p- A5 S* N; N8 `: X$ ?4 ?
  {& c' o5 [4 t1 O# d
poll-class
& z! H! c% P8 q+ S+ A. I! T
: t2 g% k; ]  V
get-color
0 U; h2 Y6 p" v  S. s
8 j9 G, W! \$ e0 e- o4 z1 }
]]# |% e% v! F9 _. C0 ~

# }8 h3 z7 ~$ K2 n" c: q, L( U+ z;;
如果所得的信任度满足条件,则进行交易
, p3 W7 ]) v1 U" I% c* O7 d" ]: X$ S1 G4 |
[

0 O) C6 `& w+ Q. T; \- O" @( m& }  J8 l
rt random 360
, R6 Y$ o6 ^  w' E+ l5 f

( R7 t4 e" D8 X: g! G  Ifd 1
9 a$ x: Q9 _2 A1 @5 z
: |' v& w- c& _1 {" ^
]

; J, m9 h, S# c: Z! p7 @; e1 ~% b# d! j! t. ]
end

8 Q3 ~. y# S) G: t1 l
+ w- [) I+ y$ z- {1 g; s* vto do-trust
6 I/ X8 b) x% M4 P  L3 g- _3 uset trust-ok False
7 D# ]6 s: R9 h
  P, B$ {6 o4 n  D% u8 p9 {
9 Y1 u" ?" w" f1 ?# k- l4 ?( T
let max-trade-times 0
! _. z* Z' f) N7 s" Iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 \. S4 Y7 m/ K$ l
let max-trade-money 01 m+ q' @& s/ P+ g0 j8 O6 w/ M" W, H
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  d5 n9 j) c# z* i) o% ]: V2 @
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( E# n) W3 f3 L' l. |/ P' a8 _8 m2 i" M/ h7 o. y$ T

' X( r( {/ y5 L( `8 G5 O; e  Iget-global-proportion" P& G- ^  r/ S/ S8 ?+ `/ j
let trust-value
4 m( D2 h/ k! l' a* j# Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

& p4 B1 ?: s. V; O! R  h1 }4 Mif(trust-value > trade-trust-value)
8 C3 m& N* D4 ~* N9 Y+ y7 m[set trust-ok true]
; y! S4 y' G1 ~1 x9 z7 qend$ @" r- a% b3 |3 F
. y( H' O: b2 ^( y
to get-global-proportion3 ?. `: ]  @. ~' N# }& g4 u& u$ T
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# w( o8 K# N' T7 [" p
[set global-proportion 0]
; B+ J" d+ b3 i1 P4 |4 p: g[let i 0
: s0 Q' ]- _1 Rlet sum-money 0
/ D. l' @& U( ^' ewhile[ i < people]# Y) l$ C( y2 J+ g: X3 k
[3 `' l6 c' p: O- L
if( length (item i! _2 L; w. R1 k- O+ U7 B/ E
[trade-record-all] of customer) > 3 )

) A# }3 h5 Y: H6 Q0 A& P$ q[
" h9 W- Q; x4 Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself)). Y9 Z- \  C! x; A  z" Q1 \0 L% D& W
]! |5 T: E6 H* N
]
/ J( C9 [* k2 ^: Olet j 01 G/ a( z+ T- X  |1 H. u: o( z. l
let note 0
& R$ W, p# v4 Bwhile[ j < people]6 U: @' N# K* M% X. s
[8 \8 x% h3 H" w, a( a" _8 q
if( length (item i
" S8 K. }/ a2 `" W$ c% D[trade-record-all] of customer) > 3 )

7 f4 y: y( @) p8 t3 G+ v7 X[
1 k7 u4 n2 R' w' _, i4 kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ y9 M+ u& ]; q, P$ g; v, D, h  X
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ @5 U' k: n$ y6 r3 p[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. S8 S* e" b# Q1 p6 V) w]
$ |* z# _% d! V0 N]
. k; S7 n. a6 ]# @+ w; I; ~+ \set global-proportion note$ I6 m: u- {& j$ ~. ~+ J, b# z
]- }2 s$ Z; }7 F$ L$ J1 u5 }7 b. Z
end
+ S& V$ Q/ z  U: i
' |) J& g+ e. v1 x$ B5 [to do-trade. {0 M  H7 J8 |) g
;;
这个过程实际上是给双方作出评价的过程
; q) ]2 ~# J. o0 ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 K9 i% L% U! ^" K# xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 N6 X% c  d- B; G
set trade-record-current lput(timer) trade-record-current
/ r; g! x8 {: v;;
评价时间
7 s, w' @3 g& D, ]ask myself [
+ F4 `. n9 W7 |; y! [update-local-reputation+ X9 Q* j- Y6 H7 f5 E$ d  I- K7 G
set trade-record-current lput([local-reputation] of myself) trade-record-current" d/ X: O( R; w2 d5 f; p
]! S# s: l$ X7 b* k9 P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: `& m+ P6 S2 w: a2 `) m8 J) f+ E
;;
将此次交易的记录加入到trade-record-one
) t+ _' y8 o. b; t) q) [set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 h3 T1 `! |# L* ylet note (item 2 trade-record-current )
' t, z, Z$ Y+ X2 X  {+ ?set trade-record-current, N) Q, U2 s) W, T
(replace-item 2 trade-record-current (item 3 trade-record-current))
: ?8 y- k$ g" ?+ e- o
set trade-record-current3 {- V, E2 v6 W: X
(replace-item 3 trade-record-current note)
2 M+ B; A' n( p1 X  O, u; z0 I  o8 C
7 T8 Y; X# p, x3 O0 l
# c/ I& M+ x: h) @. E; F3 X
ask customer [
+ S& n2 @+ o% N# ^/ N9 Iupdate-local-reputation# W; a) N" x7 x5 {1 b
set trade-record-current" y* K4 y6 [7 `6 b" |: ]2 q4 G  b
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 u" c/ @9 o7 o* ]
]' V: V* `9 z, f6 L& H1 X6 L5 j
! S  ]3 p0 q% \- h! V
1 b; A5 q2 Z: {) H
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 P& {- i6 E* N0 q$ E. v' g
8 s( A6 G3 _4 \" I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); Q9 I4 I. j$ l8 u+ G
;;
将此次交易的记录加入到customertrade-record-all
( z# z3 T- K% N: z4 l& nend
+ n' S" D+ }- v' V5 ~$ i" N) d2 b2 T- j8 M/ W" }; t
to update-local-reputation9 X; S; ~( l: _  |
set [trade-record-one-len] of myself length [trade-record-one] of myself3 |) h& K2 f: S' b* z  B# M+ m0 M

$ |/ T, ?$ U0 H7 j- [7 j! k
: c4 {2 t% i- j5 B;;if [trade-record-one-len] of myself > 3
3 H; h. }7 b: t( }' n) Y" X
update-neighbor-total
1 o. p% \* I- q+ Q9 Q/ o3 z/ \5 W;;
更新邻居节点的数目,在此进行) c3 D$ O* `* Q
let i 3
$ d) y! D' E. D9 @let sum-time 0' f8 H4 Y0 r# i# H1 j
while[i < [trade-record-one-len] of myself]
2 j5 D( o) Y! q3 t; t! p( B[
& m, X+ ?3 S2 dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  {1 e+ S# _: n. i
set i1 K" g. ~5 @8 m. h& H
( i + 1)

, {: Y. \2 K4 u" g6 v3 _]# R) ?/ P3 d3 d, U3 X  a0 H& \9 ~2 j
let j 3
6 M, y+ @# ]( y- c* R  \) I- G, v. Ylet sum-money 0
+ l+ S- N( b+ wwhile[j < [trade-record-one-len] of myself]
, V" g: D* w& D/ U% S6 r[
" ~+ W( f( i# Q/ ?6 V1 Wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)! ?9 D: F  I" ]
set j' n# h9 X* y  x# L& m) T
( j + 1)
( R6 V% G' P: W8 F" v
]: y% [3 `/ E2 V' Q" K' u
let k 38 n6 J4 R# @, U7 s7 X: C
let power 03 f3 V- ?* o- n' c9 _, u0 e- j
let local 00 H$ L9 B( _+ K
while [k <[trade-record-one-len] of myself]
0 q( y7 @7 V+ Q2 M[
) U! q0 J& {; ?; Y! kset 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 ~& N# K5 J, O" B1 T" b) q0 H
set k (k + 1)- i9 j& q, f: B' t) ]' @: k
]
- L& T. a/ R! F2 g! _* Y5 F0 xset [local-reputation] of myself (local)8 {9 y1 T8 m5 M. J0 Y5 u
end" z# k4 R' }! m. h9 [, C8 M
& Q, n* q0 \# r* p! T
to update-neighbor-total) |' v& Y+ D$ u- a. Z( F" a+ T

) q4 f9 I+ G; {* v" Y+ W7 bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 u0 f1 m) g- P
; u0 }6 a# W% V$ Z  e: w0 Z1 \
3 `; ?6 m' w) g
end1 y4 n4 I4 I2 [! Y$ y, h( H- V% Q

3 V5 K( U3 d. D; U$ {to update-credibility-ijl & q, Q) J! p' c. }2 i: ~
+ I7 Z! r8 g1 m6 J! q8 y
;;
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。' n: e% G; _# e$ |/ `' v
let l 0
+ H1 U. u9 m" I3 u  v+ e- Y& Awhile[ l < people ]4 F7 C) E3 V. W- ]
;;
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
: F. [6 }# q( n. R% b0 }* k3 E3 V[
0 g7 T' b4 }( w# p' V" T" Qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 x( W7 W8 t) q% Dif (trade-record-one-j-l-len > 3)
. K/ H2 V4 u$ m6 k0 {[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
' `& z* i6 m( b4 f: d. c+ B1 M0 Qlet i 3
6 Y/ |$ ?# U9 F# x. Wlet sum-time 0; g' g8 C/ v) M9 p4 m# l7 g7 E! d. N
while[i < trade-record-one-len]
. a! |, D" V# }% X[
( s% o: _% h2 ~% c; O$ [. b' ~set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* u3 r" M6 K$ Rset i
3 m% V. B5 k$ C, S5 ?. X( i + 1)
' N4 _1 e. k; w* [$ H6 ?
], o# y. g" x4 y! x" v5 |
let credibility-i-j-l 0
8 N' N8 j6 J5 y7 [# o4 f;;i
评价(jjl的评价)
. ?& T* N0 \$ o+ slet j 3, j' L7 i/ k; h
let k 4% {2 d, T1 W! }$ M( D
while[j < trade-record-one-len]" N" W" o0 x! d* {
[1 a% a6 @1 N! N6 U
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( t4 e/ Q' ?9 V* s  O! }
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)) y7 z: i) u0 ]  m, P9 m4 c
set j
! v: E2 @) s' V$ F) `- V; d( j + 1)
/ c4 a, O; q8 \. \' K. @
]
, O0 `8 N9 h9 e3 H9 v2 e. |5 F2 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 ))
  Z( q! E) S4 ]# k+ i3 W. A2 r
& q2 G. G* J1 U& @" J

+ X9 d. ~: _7 plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* n2 b+ }* j. m+ x
;;
及时更新il的评价质量的评价
! J8 R' j2 i4 F" e* Eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( X0 K7 i+ X8 M5 d* k
set l (l + 1)
  `$ v( v7 Q8 M) G" a8 o]
* L! j; \/ J, i- @7 |; r# Pend
% g, N- |+ D% k" l1 K/ B
& L% j9 ~: y3 ~% H  Rto update-credibility-list' n6 \0 P; a- t" M
let i 0
% B, {% X) _, D: v0 d+ S# }7 S7 Uwhile[i < people]2 D8 o3 s) s* \  L
[+ `; f3 s6 q% B7 \8 j" G
let j 0( n% \( B# \6 [) {
let note 0. k: ?8 \) R/ T! I; Q
let k 0  b/ M$ T! X% W
;;
计作出过评价的邻居节点的数目' t9 d0 `6 c- F5 e( a! e
while[j < people]
. z6 F/ Q' s( b' g1 W- J" V- R. q[$ E$ R3 X4 P- y6 Q- l- U
if (item j( [credibility] of turtle (i + 1)) != -1)
* c2 X) T$ s# x% B5 k# ~: c$ A0 d;;
判断是否给本turtle的评价质量做出过评价的节点& m- u8 I& b& W7 o) G; L5 l
[set note (note + item j ([credibility]of turtle (i + 1)))
) ^- \3 w! j, m6 e;;*(exp (-(people - 2)))/(people - 2))]

& X. u9 `, {  d/ ]1 cset k (k + 1)
8 A; s  q' P1 H) E$ \]7 W5 m. f- ?; ^
set j (j + 1)- O) ?" g0 E- {3 \5 Q. {
]
; S8 |  b; G. P* ~0 [8 aset note (note *(exp (- (1 / k)))/ k)& c% |% E8 o; }  k/ V( L6 g6 J, l
set credibility-list (replace-item i credibility-list note)
: ?3 _3 l% d+ j/ D3 G4 g, j% I, }0 d6 Uset i (i + 1)
( K# i. H( E. y0 j& a/ Y]
# w+ t, R: D9 nend' t, q- C/ J" \# |3 f
- o) j  b& b  {! e- _+ @' U
to update-global-reputation-list
  C0 v' M( ~- N: \6 t) clet j 0
( i6 t7 E3 @/ @, }; mwhile[j < people]& r* x' H7 X+ h
[
" J) N* }) Q0 v; a3 X) J+ g  _) Mlet new 0
. Z6 L7 ]$ {, P3 }3 r, Y9 `$ w% Y;;
暂存新的一个全局声誉
& B! y; d, [4 H* ?* U0 Nlet i 0
6 u8 q+ g. U  _! h6 T* zlet sum-money 0
0 A" ]3 q' C3 _let credibility-money 0
( J6 h9 h; H/ S% u1 g7 ?9 Pwhile [i < people]! `! i6 ^( X2 Q2 E5 H. E
[% R# \+ f4 O, Z" `1 N; Q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% Z+ z; n: Y" `# B) S& Vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% `' `. N  A+ e1 aset i (i + 1)" M( O5 a# v/ B1 b
]
7 C9 @" ~: d/ @4 M* mlet k 0/ u) ^6 `# ], _5 v  }5 W8 _$ W
let new1 0
; N3 K( ~0 P* ^+ x9 [8 Swhile [k < people]
& H: _) b  J0 ~; c* Q[# r& [9 w1 B+ M0 ^3 W& D# G0 R
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)% o( x* }& s5 A
set k (k + 1)
  C8 Y! N( i  r9 l]' P. \2 Z: Q& P/ m! y9 V
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & A& S$ P; o$ ~0 J2 q+ r
set global-reputation-list (replace-item j global-reputation-list new)
9 w* T7 b! M+ \' m$ ?set j (j + 1)
) ~/ k! Z- r) s4 \  ~2 n" P6 [$ A* w]7 b2 h# l% {; w
end# W9 ~* `- P6 V6 u
' N. f$ X4 M* P- z/ z
4 m* S" V8 a( g0 [8 U- ?  k3 f  z

& u" r, n# G( i$ gto get-color4 x# U* G# W6 a6 }6 \" o

5 Y' u& \: H5 P5 m* Z+ mset color blue
" V3 b2 h1 M- a$ j+ O5 U
end6 Z2 x0 B$ e. m& [3 v

0 R8 Q& w9 s9 X0 M3 ]# o2 G; wto poll-class
; Q& l' b- y7 n1 I4 s3 Zend
+ H, u; E! V4 ~9 @- z+ q
( y, h5 s+ y& j& m6 J; kto setup-plot13 Q: f( ], M7 D2 i4 r  p8 i0 h  e

$ z2 R# V9 C- U% E. m' M7 Pset-current-plot "Trends-of-Local-reputation"

7 f) x+ M4 I+ |. ]$ d- L7 H
- u4 V  X, @! ^, S2 mset-plot-x-range 0 xmax

- R  I. z) y3 Z8 @0 P0 D4 n, _- F7 p; Y
set-plot-y-range 0.0 ymax
2 S) d7 g2 B" }0 ?& o& Z+ _
end
. B$ ^2 z3 q3 j( [$ r
( N0 _. ~& Y5 jto setup-plot2
9 z& A# d3 ]* ~6 A4 w( G, X) D( f. x, o8 @2 T
set-current-plot "Trends-of-global-reputation"
7 A" Q6 J4 ^' m9 j4 j

, p) m0 B- G' d0 x0 ?set-plot-x-range 0 xmax

" [2 F! z1 c% H. a. r9 G( u
$ P+ r) c" M: ]2 I2 ~5 }set-plot-y-range 0.0 ymax
& H' g! c* M7 o% E% C3 e- R- |
end
* w( ?6 S) c/ ^7 Z# ?& z, Z  y! Q: ^% d9 \; V. \
to setup-plot3
% |8 K2 e0 S" d& Q# U) c
4 N4 W+ Y/ b+ u' j. zset-current-plot "Trends-of-credibility"
1 z0 h. o5 R3 b2 L7 b1 s. w2 V

/ s. {# g2 z3 _: A( R4 Wset-plot-x-range 0 xmax

2 a) c4 v4 g7 p0 S( @0 c: ]' _6 Q" q, Z0 t9 }+ J
set-plot-y-range 0.0 ymax
% D$ j4 r2 G8 e" s
end
- V0 N* L( ?; y$ O: k& ]7 {* a1 q0 L
to do-plots
% L+ S% E% r2 H7 u5 h% uset-current-plot "Trends-of-Local-reputation"
, `# i) {: T$ Q7 Pset-current-plot-pen "Honest service"
6 K0 h: u, G4 E# X0 Iend! d' f0 t- ^+ P, J. i& g

5 M* l% r& B2 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.
0 q- {! e7 _% D+ L" O6 e; _, y/ `& \! T# i) {+ ]( s
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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