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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:- f* G; W% G! q2 H! v3 x5 P, a5 u
to do-business
: t1 A0 t% X- g& W/ z  { rt random 360. q% H. R" h& E1 ~
fd 12 @2 s* |; p8 t0 {& [
ifelse(other turtles-here != nobody)[
  R' F5 y- \$ T: c   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.: T8 P4 I& c" C9 X- R# U2 ^! G. y* U
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ u; k1 j' ^- Z. w5 _4 k4 _   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: j$ [% k9 Z, {/ [/ T   set [trade-record-one-len] of self length [trade-record-one] of self
" x1 W( G1 z. r   set trade-record-current( list (timer) (random money-upper-limit))# \7 B/ g! z; g! E) F
( _) R$ t* _; Y8 d) N3 d0 S
问题的提示如下:% D% Y: k* u, ?1 k! S7 g- |
2 U9 }# @7 p! L
error while turtle 50 running OF in procedure DO-BUSINESS9 ?8 B  @* Z0 }5 q& t$ O
  called by procedure GO
/ w. Z2 K- k. z1 WOF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 p5 c! I3 G. N8 ^2 B- p. `' M
(halted running of go)
* v. ~' p6 X: D& w4 r* S
5 Y- g$ y" }$ q5 H0 H- g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~~
, u; b$ {0 w# L% y# c3 {& ?" f另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教8 Y3 a/ Q6 C" R6 l5 c) i* Z
globals[5 D) V: s9 B3 y7 {2 Z
xmax- [7 f) \4 r9 ]8 @
ymax. A  U' P& X- I3 r
global-reputation-list" Z& k' d: p5 j" S6 J8 y) Y+ k
- e% Q9 D( F  A/ U
;;
每一个turtle的全局声誉都存在此LIST
4 X$ s1 D* t" n1 s- @1 n, g! ycredibility-list7 m3 y6 h0 f) v+ R" U  Y* ?/ n/ f
;;
每一个turtle的评价可信度0 M* c6 ]2 L4 y/ J/ @0 {
honest-service$ L: j( ^* u6 `3 K6 q/ W
unhonest-service
, E+ |, R8 {7 y" O$ J0 U" Eoscillation
( Y3 K" p; l  `$ f0 M% m+ q2 x! |rand-dynamic
" A5 k* x) _% l( f! y$ V1 J]$ N$ ^/ Y# U: B3 [: T

* m+ I( i4 c: U* yturtles-own[% M& V# B( S- d" y$ q
trade-record-all
$ X) k0 W' b! Z! I;;a list of lists,
trade-record-one组成
( ?' q- T8 J; n! vtrade-record-one
1 W8 R0 N3 S1 H4 F3 Q% v: C! 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
1 F1 y; @. W0 I+ j+ `' [) v7 ^, ?& q+ U3 e3 ], w$ `5 V# 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]]
4 o) [* I4 k! d3 [, V& C0 |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]5 ?2 S4 L! i2 Y' t) a5 B
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
1 m) s5 o4 R3 i& [  C8 [6 Pneighbor-total( ~# i% E4 v8 k
;;
记录该turtle的邻居节点的数目1 v: g3 @7 b: \; p9 ?1 c  }
trade-time$ _  }$ o& O9 u. [! U
;;
当前发生交易的turtle的交易时间
1 q7 a# i& m. F' _appraise-give
! E. l8 E$ t: o( b& D* ?+ R;;
当前发生交易时给出的评价9 j9 T6 M4 U" z
appraise-receive
( ~! P# K& r' k* a) d' T* U;;
当前发生交易时收到的评价+ B2 B9 P* Q: R' K, u6 u8 o/ S: \
appraise-time7 S: d* `: n" V& h9 [- W+ Y
;;
当前发生交易时的评价时间+ H9 D/ V0 {) u$ L( G
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
  |# P' Y4 M: s1 C5 @trade-times-total3 e& M8 F1 {: K4 f# N; [; y  m& N
;;
与当前turtle的交易总次数1 s7 e& c3 Q- n: b6 `( H, ?0 w. Q
trade-money-total8 {6 N6 p0 M- q# }+ l$ T$ N
;;
与当前turtle的交易总金额
( A: J& d1 C9 Z6 M, L( llocal-reputation
2 S! p; r1 h' Y* Xglobal-reputation5 e3 o5 N6 K/ F, c
credibility
1 f( C$ |+ Z) A( [;;
评价可信度,每次交易后都需要更新8 i8 g$ i( p' P9 l% @0 o
credibility-all
% D9 H: `+ |: g& W;;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. @7 U+ t- I& U* u8 q3 u3 r
3 B" t7 B' S' r1 \% Y+ 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& m- m. X* {% \$ O% Y0 G' ?
credibility-one
0 ^3 J1 L3 @; r8 |;;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- e8 b! Q' D+ G# Y0 Q
global-proportion* W$ W9 V2 v# A4 _' G" q( c
customer
' x& Y+ q6 H8 a8 _6 E1 x0 ncustomer-no
- f, k+ G6 P! Y- v3 _1 Qtrust-ok
2 D6 l2 c$ B% G* a2 P6 s8 Ltrade-record-one-len;;trade-record-one的长度# Y) J: A2 M2 G( t! F7 Q1 v
]
2 E+ {. z8 Z2 T% M" p3 f& L
# `$ T: [8 _" m' y6 H& H;;setup procedure+ O" I0 |  K0 p

' x0 ]0 x! e$ f, l) Jto setup3 C) b! h% ^: l! _" r

& \* _0 a. E! m' e8 x( D: i; qca

) n4 `2 N0 t8 G9 l1 N$ D. Q
' h& A& b4 h4 t7 pinitialize-settings

& o, }2 e% c" X# o7 T: ~' R5 r5 ^2 r. h% }; S2 E
crt people [setup-turtles]
. ]( k4 u$ S( V

6 Q; n! O; W  z  J: ireset-timer
# z- M7 _8 z: z1 }" V! n/ Q- s
- y% |8 A' o( H' C
poll-class

8 X; m9 [6 g" y; ]" v$ ~
" D* ?4 d! r2 H* i9 ]setup-plots

3 ^5 ?1 [+ s. _( C- O! L" H, g4 ?7 I$ |1 H' Y! \: j
do-plots

) }, O* g) U& h' y1 ~4 A8 Wend
( Z" W/ h- v  R% d: k9 n: ?+ X! A, N. z" {
to initialize-settings
; p. p0 \* C& \1 ]' N. j4 l$ `4 t0 T4 o, z0 ~" L
set global-reputation-list []

) V1 T1 Z2 Y. ?2 L5 s* B% `! n4 ~4 f& S, V* h
set credibility-list n-values people [0.5]
5 S, T0 [3 I+ A

6 w: F, [& U6 U+ Pset honest-service 0

5 T" s% m5 @( ?+ f" _' V# f
2 j2 w% e: Z# f4 {set unhonest-service 0
9 {& C  Q& j3 f# J3 {# b

2 e1 j+ Z$ g# w7 s8 {  lset oscillation 0
  {9 n, p- h3 C: _( X; N  t4 a
% ?' d+ l! n+ ?$ k! T) {6 i
set rand-dynamic 0
( A* T" _  }6 q
end% E5 _+ n$ P* s0 P9 f0 \

. a& B2 g5 x# ~; W5 i3 B  I/ h+ {to setup-turtles : G+ @4 M- r+ u& t/ O1 m6 r
set shape "person"! e; c2 B% g. z% v+ C
setxy random-xcor random-ycor" {# E& B0 p8 |! h, [$ S) {/ {
set trade-record-one []
- W/ X6 L* p' v# _

3 y, Y+ q& X' v: W+ k' V" e, Gset trade-record-all n-values people [(list (? + 1) 0 0)]
8 P0 P# z# s3 s2 z; j

7 K4 r2 B3 l0 E1 ^set trade-record-current []! `3 R6 w$ l9 s
set credibility-receive []
5 y6 U: f2 j) t* k, ^set local-reputation 0.59 F$ n1 P( R( E: i# ?; I' G
set neighbor-total 0, n$ {. [" `- q! ~3 J
set trade-times-total 0% ?; d- M7 {  E. v9 ~; \
set trade-money-total 0/ M( n. x/ ^# |) }7 W
set customer nobody5 g. i& c7 n( u$ B- P
set credibility-all n-values people [creat-credibility]$ h" Y, Q0 A% {1 C
set credibility n-values people [-1]0 }8 O' n5 T4 R$ c& E
get-color" n- V% p4 c) U* V, ]# w
! A. Z( `4 I4 K$ G
end7 W# H0 w. ~& Z: u' D! d" Q' O
0 X2 Q7 A; c' E6 v1 t" S9 C
to-report creat-credibility
8 W* j! L( N7 yreport n-values people [0.5]- e! z* E. P& p1 J  E5 z& g
end5 g  x6 B- i4 U( r; X" s$ m

; v! r# U, f( o$ mto setup-plots
; C3 Y9 Q; D4 r; F* w  u2 |& k/ E. w! h5 V- {! z7 ]
set xmax 30

- T2 J0 Z8 `& H" d+ `2 p* q! u7 W6 [2 t( }
set ymax 1.0

# ]! i! Z+ R! X: i( E! y
. {( `2 C1 Z' X) \3 [8 Wclear-all-plots

$ ], A6 {; L+ l3 c& F. l( n1 d- u& S+ c0 a4 t
setup-plot1
1 D) z4 ?& m( L

7 M" ^5 f' D3 s3 J3 Csetup-plot2
( t9 Z$ u  @4 y7 H& e( Z# `6 m
8 U' C) J/ L, t% E6 }2 l2 ]
setup-plot3
& u& L1 ?, R) J
end
. J& \8 p/ Z: k; F! m
: _3 O: Z$ G2 z  O$ B3 c8 B' C;;run time procedures9 v; h$ v6 r9 t0 I( Z9 d

8 }% A2 Y! ?! S8 n8 {. q2 f4 Sto go
/ x; \8 M& l/ C5 x6 d3 e$ E- @0 @2 p- |& C, e3 O
ask turtles [do-business]

  k$ x0 n" X& t" C( r/ Pend
5 @4 X; j( v" M7 `- \$ K- A) R. g; t9 w* K& F  L# n+ U3 p
to do-business
- W8 \# T4 M# L* f: b& F! l, n

  h4 {  `7 n5 C+ X' H5 c0 }4 u- [, ~. K3 G7 k% I% f  Z' D1 D3 m. r; D
rt random 360
2 U* Y6 ]* ~) R$ ^
; n1 z; h9 q' R
fd 1

2 n9 Q$ t% l$ {6 w: i+ j1 }6 \
) b/ u! P! C/ _* ?+ Lifelse(other turtles-here != nobody)[

! [5 D3 J: U) t/ Q' s) q& M' F* s; b
set customer one-of other turtles-here

/ J5 h1 e/ L( p; X/ `+ P
" Y- Z5 W+ o, j. a- y2 y# m( j;; set [customer] of customer myself

) o; p- t9 q0 P: R. m) b3 X0 ~* M7 L+ l: N+ N% @/ s6 {
set [trade-record-one] of self item (([who] of customer) - 1)
2 r+ C) r. @$ N8 b! D! Q[trade-record-all]of self, y+ H# X1 M( i7 p# x
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 J/ C$ b+ Q' G
' d3 s  t9 s& q- D8 Xset [trade-record-one] of customer item (([who] of self) - 1)4 m( r. ~5 D9 @5 w  e
[trade-record-all]of customer
# O0 ]# V$ ~: @" f* }
1 H3 b9 l/ L! m* a* Q
set [trade-record-one-len] of self length [trade-record-one] of self
. ~+ F/ U" w5 t; Z1 |

$ x( o, w9 y' h& y4 d/ C9 ^set trade-record-current( list (timer) (random money-upper-limit))
& l; j0 z1 n) ^) e& ^: q  c( @& `

0 u+ G: @) s+ s5 Jask self [do-trust]
' R" z: D2 |7 Y/ }4 m;;
先求ij的信任度0 T" e# I5 t/ Y) G; x0 z8 x

! ^" D$ H; h3 E. Z5 G8 N+ gif ([trust-ok] of self): t0 i) N% b3 j  m5 V- t
;;
根据ij的信任度来决定是否与j进行交易[
" I6 N! z$ H5 O' Iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' V" J7 \1 H2 {# k% G  I7 _
9 F& E! D! L) P! X' C' s( d6 A[

# w" j& E: {' k3 z) C# J
4 E$ K! {+ m! p2 z6 \4 Ldo-trade
# G( a3 y, Y" {4 N$ U# q/ {6 u

- l! \6 y( {. y" k" Cupdate-credibility-ijl
' J- l3 m; E. H& d
/ |6 c2 f& K+ m
update-credibility-list& L& \# M2 |3 E' n* E9 t: B& l
5 Q9 J, X( _7 I' d

" _& \# B+ f9 ^# F* c5 F7 b& eupdate-global-reputation-list
+ L8 m- M5 x+ H+ R4 W( o

4 K: d0 @! |7 h. H& J6 w6 ?poll-class

: A$ c1 S! B  S4 ~2 @  q4 s5 O% {/ i/ R) {! J# c. \8 P+ q
get-color

2 r( r) a: K# w0 q
: D) S; A3 I  n* `2 a) S2 d]]( @( E& U6 t  E! ]! O

) w' y# ~6 @7 s3 \8 s# w, a. Z6 {;;
如果所得的信任度满足条件,则进行交易
7 P" w) v7 L' T/ Y9 }- V7 O/ _  F1 [/ v6 M, o& o
[
1 b. o* Q9 z3 S+ K2 L' j# I
% @2 N* M/ i5 K! [8 J5 X
rt random 360

$ a- Y- b/ T1 q; G$ Y
: v1 _9 b. z5 yfd 1
2 `$ ~  [# |6 ~
" O2 Q4 l- P+ U+ m* f9 ^+ _2 l* c
]
6 Y. N/ P& @; H, A$ p, C
+ N* A% V( o* Z/ U" q' ]
end
+ u: s$ d3 L( ]

# e+ Y! B2 M9 t6 ~: H+ Z* T- Uto do-trust
+ c; O8 H, Q) ^5 t: K. }. Lset trust-ok False' m3 O6 t2 U0 j9 U" T) z- U3 o0 j' I; w
" v# y+ ^7 F4 N( h- Y5 M9 ?# a

3 e- D  v8 c( ?: i! L* T5 Blet max-trade-times 0( t& M/ Y/ @/ G3 V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% u: M) n( u! }8 Y
let max-trade-money 01 j& L. E# A1 t$ S
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 H5 G& ^4 I7 E7 o, R* l$ r! @
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- ^+ ?( p0 A. @. O; L0 ^: c1 ~
; j2 p% T( \( v9 y' a
4 D, U' l5 U# N; L- c# g$ s
get-global-proportion4 ~8 G: V/ c9 I& Q, t1 J
let trust-value
  z" y4 ^3 C3 U- ^, Llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# |0 Z- v! m. _! |1 ]7 [8 o0 Qif(trust-value > trade-trust-value)
! B( N+ Q$ p/ \8 Y/ Z, }$ [[set trust-ok true]; f% H1 f. _) b
end' ~3 [1 b6 V& M! J6 t; G0 \
3 v+ b& @" K+ k! l( S3 N/ b  {( P
to get-global-proportion
  p1 z0 z3 s5 r  F! M" `ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ v0 R: \2 V2 ^( ^, C5 x$ B[set global-proportion 0]
! O- I+ Y. r9 P- j4 o[let i 08 g) f! ^* }7 s7 Y' l( o
let sum-money 0/ Q! [' g1 S* h: j, D
while[ i < people]
8 u7 n+ S# U' N5 g[; j4 @, z. e& P! x6 ^  x
if( length (item i3 ]# |' ^5 m+ j$ ?2 e0 J
[trade-record-all] of customer) > 3 )

7 a% m- N" i# O* \[
& |+ V* m# D+ x0 A2 cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) a( |! V/ W3 Q  c4 k4 J8 f  M* j]
& D/ Y6 K9 r4 @! N2 m: M]* t9 h. P8 i# i: S
let j 0
' a+ W8 i) ?4 D/ J/ Xlet note 07 a$ A- a1 N/ a5 Y5 y+ Z3 z- I, }
while[ j < people]
% t) M' H1 K7 j& g[2 ^0 k1 f6 ]. W: R$ z
if( length (item i2 `2 |( c4 T: d% B2 j
[trade-record-all] of customer) > 3 )
' M2 L9 p/ t' T8 d4 H7 ?- W
[6 y6 j- V7 C2 z. t9 b
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, H% Q7 J+ ?# Q9 L0 A8 F- U[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" n& B9 G/ K+ X[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' S+ P; z$ L+ l! V0 O$ h]! P* r# T- x- H8 Q  w3 ^; ~+ N
]1 G6 z7 q8 K6 L4 N6 k
set global-proportion note3 V  C  k, m0 @
]
! p) b- W9 v9 Q! F& bend
* Q$ W5 B' Z7 A0 u  A  G. ^/ ?5 _( K% }, a" v, @1 r. A3 L, K
to do-trade
5 ]0 T+ B, d4 J' G9 q;;
这个过程实际上是给双方作出评价的过程
& }; n3 }) y% C; X0 U7 Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( s8 g' e- e" r# u7 v* E. X- ~/ X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) A- S* f2 D: Z- b
set trade-record-current lput(timer) trade-record-current
  ^2 |6 W8 \! |# K. E;;
评价时间
) x4 G) w; m# Y. F# vask myself [
" {% s" u3 \1 t  T$ Oupdate-local-reputation4 V  v  l& O+ `  B0 t4 X1 i
set trade-record-current lput([local-reputation] of myself) trade-record-current
0 U5 I# a' C# J]
) h' s9 ^" R9 a" B3 ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' }, Q7 M5 d3 t, v;;
将此次交易的记录加入到trade-record-one
0 {5 F6 o1 V1 F& x- P0 I( lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% s0 V: X8 v/ v7 f+ I) E& Y. y, Mlet note (item 2 trade-record-current )
2 \' o& L5 k. O/ ]4 t1 s; P0 Y% Dset trade-record-current
) v- K3 C( U0 k(replace-item 2 trade-record-current (item 3 trade-record-current))

8 b2 M( }; l& R+ O; r, ^set trade-record-current
/ Y' f& L8 D$ X(replace-item 3 trade-record-current note)* ^! \1 c* S  f. }

, D2 [" ^3 P% P

1 l6 v0 q6 ^0 a8 q9 \" gask customer [/ e$ f& `1 I7 t
update-local-reputation8 I& ]% N, S+ Y. C& |7 i  I( |4 e
set trade-record-current% S0 T2 A9 U/ Z! m5 p, q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 f) X9 o: X" G3 `
]# r- |0 a: g0 w, b+ K
$ F6 r7 _% S4 e4 i2 w! Q" z5 b
5 I1 ~' N- Q$ }
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! k% N* m1 l1 t1 r" r& u4 a

8 \- f0 t9 x! E* _9 I% Hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. m# ]# f0 c/ {# A, ^0 K;;
将此次交易的记录加入到customertrade-record-all
* u1 C3 g% |6 uend
* w* F  N3 M8 t0 _
8 ~$ L) A* P7 j" }to update-local-reputation$ c1 P6 u1 H6 O3 V9 n1 [
set [trade-record-one-len] of myself length [trade-record-one] of myself' Z. U4 s8 J) K, J  S8 l
3 O% E0 V/ W: d3 M. G9 o, x  d+ \
. y8 X* e3 O/ z% `
;;if [trade-record-one-len] of myself > 3

% x7 @: ?3 r) \update-neighbor-total  r. G# u1 ]5 f$ U
;;
更新邻居节点的数目,在此进行+ `% G; [- B) e7 |! L1 {
let i 3: Q$ s* E6 ^& N1 b4 g* L+ R$ \
let sum-time 0; y1 t3 Y# Y8 s, S6 l/ T+ i
while[i < [trade-record-one-len] of myself]4 |6 U# ]7 M, h
[. y" J9 W% ?% o
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: u% w( z, c+ g  D: @set i( u8 Z7 \2 P% N5 g8 b* z
( i + 1)
7 z: h8 y+ j3 y& {$ m1 a' Y
]
; i7 _- q. g) m) F/ Olet j 3/ I. ~# A) j) f# H) D. G9 e
let sum-money 01 l5 u6 J) t( o1 d
while[j < [trade-record-one-len] of myself]% Y, S4 t& c1 V2 ^
[
& |! P7 Q- u: Jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
  L' g. {8 r  Z" b8 ^* E. b8 Nset j
7 }6 }" G3 ~, x" S/ T% ]( j + 1)
- {( i$ c& C! |$ v( W
]8 D) \6 C2 g4 i4 E
let k 3
; d' U! J. A+ x) Z* y" e/ c) jlet power 0
  ?6 K/ X  |! Y7 Llet local 0/ l' ^3 x& X. d0 G0 G
while [k <[trade-record-one-len] of myself]4 j5 W' ]2 d) w5 r, T9 J0 M
[
- ~- V9 w6 g; M; cset 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 V9 z. S8 d7 m
set k (k + 1)
) Z% f4 U) [$ v* |) }]
0 \0 n7 p& [5 f' {" V" U8 oset [local-reputation] of myself (local)
5 [/ \0 c6 ~; \4 D% u- a' Uend
7 h# H+ O- a: E, \4 v5 A6 U- T1 ~9 I
to update-neighbor-total! F: |0 K9 ~# [5 x% s8 u

# G6 u/ g# i& lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 j: [# f, \( H4 h$ J+ i7 {* i
8 P" I" k- I: o% d$ x
, V) B& u9 j$ \, U0 ]4 X; U
end5 ?7 `: P, t  e% m& ]) Y$ f
1 W- f" K; I: Z' ^1 p& r: B3 f
to update-credibility-ijl $ w& h7 s/ D* T9 s3 T
+ c& k8 s- r4 \0 j
;;
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。7 w5 ?+ p% z8 }" d
let l 0
$ [! }: i% M0 o0 G% ^while[ l < people ]% j- z% n- u5 b" r4 `+ @4 i
;;
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, c) p8 ~2 t( G" ^
[
" t2 p& c, e' ]0 Ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 [5 f& n1 [; W1 ]/ E, o- K! m
if (trade-record-one-j-l-len > 3)
& O3 I& M. L7 E+ A# F  }[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: B! u  J: z+ C1 }$ u. Z
let i 3' s& H' S4 T# \. O* p* b  C
let sum-time 0
7 U/ @- i3 H* d# cwhile[i < trade-record-one-len]( T  S. h; e" m* ^8 f1 }: }
[
$ H1 e+ B) U, n+ ?" K4 a% g5 Z& uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- {# e: H& k& M7 X: R
set i
7 y9 F7 v: C+ ^( i + 1)
/ L, b# Q) q0 X  W5 P5 v
]) U% S# I& X. T/ G8 f) C
let credibility-i-j-l 0! `0 P. J5 a  a  A) j2 n, @
;;i
评价(jjl的评价)9 H# D" J  L" m* _1 ~9 M
let j 3
: C8 B0 C6 P/ O, hlet k 4( W6 y& @# k: X4 b
while[j < trade-record-one-len]$ S2 c9 z1 y/ i* d) U
[
2 s2 H1 e# h6 ]: X3 Gwhile [((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$ S4 G0 t2 D" l. E/ W
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)5 }. a; T3 Y; J* ^' h% [, @' g, Y
set j6 h- H( }6 y# D$ ~, J- \4 m
( j + 1)
. H/ P4 U( {( T3 b0 [/ z; Y
]% J& J& M/ O% T
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
' Z; A% p/ s9 f& D, E( K2 {
6 j2 n5 V+ r' ~4 t

$ t+ W* [/ |5 |4 M" Z9 l& ?let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); I( o4 u% m, G5 t' C) F2 O
;;
及时更新il的评价质量的评价
$ a. l# i- H. P! ^% _% z- }6 tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ j6 _& E: v4 o' K0 e3 Aset l (l + 1)' E; Q6 p6 @0 s3 @1 g' q
]' }; ~, d4 L% Q" ?& D" b
end
; T/ y) R) J, f% o' g( W- r3 D) e0 g1 P' x5 C
to update-credibility-list
  h. h8 I! a! g: ~0 Z# Rlet i 0
. Y: c/ L8 _% b% [# @" c* Swhile[i < people]
( h# J/ r+ e. C$ B[
: y% O$ Z' D# Hlet j 0
$ [+ u& O! ^$ g) Jlet note 0
! T/ q/ L+ J/ L2 J  ?  G# z4 ylet k 01 g# R6 b& S, \) f/ p- k
;;
计作出过评价的邻居节点的数目4 s5 z. f- M" u0 d
while[j < people]" T; z; i; a4 Z  l
[
4 ~/ M  t6 o8 R) t6 @5 L5 eif (item j( [credibility] of turtle (i + 1)) != -1)  D2 g! F+ u- [) }* Q# z
;;
判断是否给本turtle的评价质量做出过评价的节点4 s" \+ @& V0 @$ m
[set note (note + item j ([credibility]of turtle (i + 1)))0 w" W. {2 k  @' F  r
;;*(exp (-(people - 2)))/(people - 2))]

7 j/ X/ y: m( o# Z3 W# r+ }set k (k + 1)
- _2 z- l, W" m6 a% S0 D/ }]
. O+ W& X7 ~+ k1 cset j (j + 1)
/ W; n4 A: `! ~* w1 t! D]
' b) A/ y, `0 R6 I; Iset note (note *(exp (- (1 / k)))/ k)
" o2 a2 Y* T* h4 Eset credibility-list (replace-item i credibility-list note)7 l: T3 |- J* I& n9 ]: L+ `9 v
set i (i + 1), T6 C: v8 E8 h7 w* V' a4 T( G: }7 V
]
$ O2 A- L* }: E0 C  Gend$ O; r3 Q( p2 ~9 ?

# y+ S# S& {2 \2 g3 G8 \3 J+ Hto update-global-reputation-list" B2 c7 t5 J# S
let j 0* X. C) f, M+ E& O  x: |. G
while[j < people]) Z4 o$ l: _5 E$ h+ `  K: S
[
0 m; d% y% S+ B' q# Q0 q# Alet new 0
' K0 r- l) Y" E! E; C, R( |; ];;
暂存新的一个全局声誉" k0 {( f& J- @, V
let i 0
! _9 k/ M/ \! |# ^: D3 Alet sum-money 0) P6 l+ ?4 ~" z% T6 D' X
let credibility-money 0
/ S: q+ [3 _8 v6 ~; E- hwhile [i < people]5 u+ o) p9 P' |5 t# t
[- O, p7 I3 o3 @/ ?0 A6 f, N  p
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 a1 ~% {7 S% G# `set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 [5 T; |- t3 Q( A: M: }+ hset i (i + 1)7 G0 N4 a9 N" z) J3 Z1 w  F' Y
]1 D. ?7 f& G) R& Z
let k 0; T' S' e7 z- E, |& }' C+ H. v
let new1 0
5 i8 ~  R  ?1 p$ |+ t. Nwhile [k < people]
: m: ]" T* r: a/ t[! Y9 R  V6 A1 J% b$ G8 J8 {  H
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)
! F" t# f; x1 M8 Tset k (k + 1)/ j1 z: \9 w( r+ T1 L2 f
]2 e; u# s+ C0 s2 @. x. l2 P1 J% H
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " z0 E1 X- h1 ^+ C+ ^
set global-reputation-list (replace-item j global-reputation-list new)# J) k+ h0 E6 E. J. n; v! B; s
set j (j + 1)
. p) F- f: Y& N8 E( x]
: U* C1 w- ~1 r( b9 v% Nend: C' z. g3 H2 [0 r4 H/ d# e

3 g8 S( L$ I+ P
6 W) Z9 |" G6 J: g0 b' l) e8 G. O. }2 X% d: ~) z8 a; |
to get-color
  K$ a* {1 M7 L! `5 s' p1 b; s3 s( H
set color blue

* `& D3 m- j, Iend
) k  G& D0 d6 D/ l
" v; G" Q0 ]" K# P8 a6 w. _to poll-class' D8 B' u5 y9 u. ^1 ]4 s1 g
end7 p, g8 D( x/ T/ C- L* d0 i
, X# O$ e6 u7 `' D$ I9 |+ T3 D- M* \
to setup-plot1/ I% z: s" l; M# [$ U' O

) p- w  W9 p3 Z; Iset-current-plot "Trends-of-Local-reputation"

% X' l" |! h- W" j; l9 y! }; G2 H
! o4 u! c, s$ e6 nset-plot-x-range 0 xmax

- X' A! R# n9 p; C5 P: [# N6 x- h
set-plot-y-range 0.0 ymax

! O7 o6 Z) \2 \- B; mend& u. s% \( u! z5 a

: C2 o+ z! m6 B0 Y3 q# j$ Pto setup-plot2* @+ |9 j+ h9 P0 a
" H5 x6 n5 M9 L' L' l
set-current-plot "Trends-of-global-reputation"
2 |' G0 A2 D$ {6 b) @

6 K, B& S& J& V1 V9 Pset-plot-x-range 0 xmax

/ r0 k- U) Z. x2 O$ z5 |7 G. i0 l6 p- G$ ^; \9 \6 E% R0 O
set-plot-y-range 0.0 ymax
% h$ \' w6 J, B4 T" j3 K4 j
end+ M2 W2 P0 v% {$ s. h* D, P

  A7 S+ N4 e6 c/ j6 o3 u! Q! Uto setup-plot3
3 y5 ?5 C: B% o" }: T' o& o* o7 }% r1 W- h! m5 y9 o* W8 r
set-current-plot "Trends-of-credibility"

4 ?9 f8 m. Y, m0 x6 [* }( O( d
8 J5 W! v! m% q" K" }8 H* \5 Hset-plot-x-range 0 xmax
$ K  _, x" c: D. U; \3 c
6 }& i% b# P) k& e5 @+ n( g
set-plot-y-range 0.0 ymax
/ `; W0 K5 a8 r: Y1 O8 d
end2 x. P; L7 E! t' B5 K
8 T1 ^0 W7 c7 I4 O" J
to do-plots
4 o# o$ |/ |  z& ?set-current-plot "Trends-of-Local-reputation"
: B3 F; }3 J$ Z0 R& b% F$ ]set-current-plot-pen "Honest service"
  y& P. Z8 |6 o' d  Y6 W9 Oend" W1 s; q% K. Z* ?1 y# ?
. }0 f( T3 d+ F% ]" i
[ 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.
8 L8 }. R$ Q" f+ u# E
% A! w1 p1 z0 K0 E, e, t, t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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