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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:7 l+ E. n  I  E
to do-business & {9 _' G$ f9 F, `, f' m0 ^4 F% J9 o7 O
rt random 360
# [4 o$ ]0 h7 M7 r; K' t fd 1
8 _* y% U0 ]+ W) n0 a1 C ifelse(other turtles-here != nobody)[
( i$ F4 e$ Q0 K/ o; L1 W& d6 j( |   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.) j/ r9 V2 F' y, A" N: k3 F4 z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ F4 ?1 j* k8 r8 y6 J7 p" i+ p6 A# ~
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; |8 c( U  |5 W5 C6 M   set [trade-record-one-len] of self length [trade-record-one] of self
/ V2 _, O2 @8 r! v# b   set trade-record-current( list (timer) (random money-upper-limit))
1 t! Y" E! i/ H5 K
% `+ x/ C7 |& {% [' g/ i问题的提示如下:  m$ h2 Z7 w# k0 d% }
, D0 z" Y6 n! `
error while turtle 50 running OF in procedure DO-BUSINESS
0 d( R& k8 [; Y! n) \4 w  called by procedure GO
. M9 _$ L1 v* V4 O4 mOF expected input to be a turtle agentset or turtle but got NOBODY instead.6 G/ H: [$ u5 {  b7 j( C
(halted running of go)! m, E; _& X! {& u" I
1 K$ M0 l% x! c+ I& d- 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~~: h2 ^1 A# c/ k0 |  z7 u
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
, T6 @* G1 K" j! f. |globals[
& F) u# U* `: r" |/ xxmax$ W6 M5 v7 `; M2 M
ymax
) d7 Z- ~$ z3 D- l. }global-reputation-list5 c( a4 f- _; l: ]3 o
& _" D( q: M" D" K
;;
每一个turtle的全局声誉都存在此LIST9 `3 l. m# x- W6 @$ e
credibility-list
) _6 Q1 g% h% W0 f9 W, W8 k;;
每一个turtle的评价可信度/ U3 {; g4 @3 m" Q6 M0 n. }4 q
honest-service
0 x3 W6 y- L: O/ H: yunhonest-service" F. M2 ~6 u$ b& \  L% `! K
oscillation, E) R( Y) o. ~2 O7 S' k! e
rand-dynamic3 R( I+ @$ L  F8 [' b# W% V! f
]- l8 J! f8 Q, N1 U, |9 ?

2 V0 i) o, ?$ E+ G; n5 a# ]turtles-own[
( m! M! k0 R9 @: V3 ^* h% itrade-record-all
/ m! c9 Q" M6 s* a# x2 A;;a list of lists,
trade-record-one组成# k% l) o& Q! N- B- v
trade-record-one
# _% X: T8 d. \  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" Q1 Y7 S5 x6 w7 v9 Q

3 Y/ V$ ]; `" @  ?;;[
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]]
- Z- A# i6 e( ]  b; G2 qtrade-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]. [, M8 t% T% _- |9 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list" w# G: B, U5 b3 `7 {+ h" J' {
neighbor-total$ k! U: c% S* {" i1 T+ J
;;
记录该turtle的邻居节点的数目9 h+ f8 G: C, ]
trade-time3 o% @% P6 @" y0 h1 J) U2 S
;;
当前发生交易的turtle的交易时间
% U7 s. B% G5 b$ `5 G: Oappraise-give
) Q/ N( R/ L; H& C/ H) D1 Y/ S# n5 a;;
当前发生交易时给出的评价
) s/ h$ P" \+ b) b0 }- }- h( i4 r! |7 yappraise-receive, X9 v1 h8 G* {* D. m8 e% Z
;;
当前发生交易时收到的评价
  I9 _6 Z' H2 X/ g2 c, H1 ?! tappraise-time
3 f6 d6 p5 `+ ]; x, r;;
当前发生交易时的评价时间
. [  D5 B- u! p6 r2 O; a) Alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ z, {5 `, |, \trade-times-total
+ P1 Z' {2 n& k; U;;
与当前turtle的交易总次数. G8 Q. x' |" [% B# v
trade-money-total
' @! ]  x8 Z  {4 c$ u- T;;
与当前turtle的交易总金额8 i8 e! b1 D) ]/ T8 e" S/ b
local-reputation
7 C& f* a8 r5 p9 s- aglobal-reputation9 x5 ]+ O: r4 j
credibility! V1 t- o' z% J+ r  a6 W
;;
评价可信度,每次交易后都需要更新0 N7 g# e% c3 G. n& P
credibility-all
6 h8 Q, x& q- y% u: V6 a4 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& D: P/ |2 S0 G- }+ c5 G

7 t! o4 Z/ ?% K. [2 Z9 p: B;;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0.59 c/ {  g- Y1 l; v% F" e; g" _, S, q
credibility-one9 R" v% F  ^  a( u$ L, r
;;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
0 S: @. _' N9 X# \% v3 A; |7 aglobal-proportion1 k) ~3 A* A. |/ ]* R$ T- t9 Z
customer
$ Z; z! ^1 _; B) J) o( G2 Jcustomer-no1 l) Q5 Z; f5 X& l) p
trust-ok
2 }& [' v" w. ptrade-record-one-len;;trade-record-one的长度
' ?9 j9 G% P" u" a; @- h]5 y" P/ ^8 ]9 ]* i
- s* U% ^% N9 z- o% }+ ~8 }, S3 @
;;setup procedure
! K8 l9 l; m; l5 o9 ^# y- O! Z/ [9 k& {8 W) [
to setup
% N/ Q$ t# U( w/ {  _/ T& y/ y; r0 \4 X
ca
7 \5 O! \! s+ f3 f
  H0 t$ W1 K8 a7 V, g# ?
initialize-settings

* g8 ~, Z9 o) M9 x0 X2 J
! o' C( E2 ^" h  W# T) Y3 [crt people [setup-turtles]
/ \2 ?: G4 w4 m; e7 k, Y

+ ]" H. @/ G# I- l2 N/ Greset-timer
4 k' H4 X& G. f  T! X; J

0 r4 u: q' Z- Z. o; Y. O1 Rpoll-class

# G$ x* K6 B6 A2 K5 ]# X$ v
3 L& N' h2 p0 @9 n$ r# n- \5 Ysetup-plots

4 T0 ^) L4 G4 M) f3 G' e" x) Q
" v. I7 ]$ K" u( E5 ?/ ~do-plots

% F& p/ l; N! Q3 z/ U' Qend9 g' `9 x2 o- {
8 a  ?, s7 M! g7 \- A* d  B- H
to initialize-settings
& t* w; a9 v# M' s% _6 L: h' W( I3 P( {" I& m/ g
set global-reputation-list []

% F* C/ u; a8 V4 X: \$ t0 D- ]6 z3 c
& _- v6 H% S( y# Sset credibility-list n-values people [0.5]

: M9 u# u& s2 e
" O9 P* e5 ~" n7 g4 `set honest-service 0
( ?5 f4 r7 g9 T) _3 d3 \
$ m) L6 [6 i5 A$ l% {
set unhonest-service 0

9 K% q% F, B) e; q" }& z" a; B0 G6 M9 R0 I" s; B. n
set oscillation 0

. S. t+ _6 w& F6 P- z$ l3 t3 U3 `# k$ a- r- M7 M
set rand-dynamic 0
2 {9 v2 S6 R0 p5 x2 Q
end
! r1 i! {/ \( j) K# f) b' z/ a! z' e$ P8 A+ g6 k' j; E
to setup-turtles : f$ M* g0 G/ s- F6 r& J" u( t4 @
set shape "person"
8 q) h: C5 e+ |9 ssetxy random-xcor random-ycor
6 z5 i2 a& C( tset trade-record-one []* i( @( d. o$ V& W; s5 d4 N# i
& e7 ~" ]9 t) z
set trade-record-all n-values people [(list (? + 1) 0 0)] ) W. i# ]9 |% m2 \( [) T$ D
; v  e% x" x. u$ ]0 j
set trade-record-current []3 {! L0 `" r1 K6 O7 z6 X
set credibility-receive []% A) H7 M9 h3 u6 T$ o! T
set local-reputation 0.5
6 O. j! ~9 p( aset neighbor-total 06 F( m- z1 W% }
set trade-times-total 0
7 z  J( K' r; S0 q9 x  D1 aset trade-money-total 0
1 U5 G6 z2 ?" o( j: h* a/ n0 pset customer nobody
& f8 p2 ^0 o. Q1 S3 Pset credibility-all n-values people [creat-credibility]
# b! d* ^% P% I$ j7 vset credibility n-values people [-1]0 ]! C6 R' ^2 z
get-color
& G6 `, W, o& g* V5 R

/ m9 I+ ]: H) b0 C( `0 Z" Hend
- b0 z9 L, Q0 e6 `1 x, ^  e& j& F! u
% A! t# h& w' }1 A# |; Y0 e1 Y( wto-report creat-credibility* f$ K- \3 t) L$ u
report n-values people [0.5]. H' g+ V  g2 H2 [$ D6 M
end
$ Q  ]4 U' i% |
7 ?/ E4 }6 c% L0 [, z' R& vto setup-plots: d. {$ z3 W2 D9 G! K8 [

$ E: }4 u9 G; A9 c' Zset xmax 30
6 }: ^' @' A3 \

: f8 A  S' E0 R/ M6 W3 z1 n  Zset ymax 1.0

. q! \9 N  ~8 Z$ y$ G+ z) S
- _6 z. D7 Y0 A( T" Mclear-all-plots
) B8 M4 G$ z( d1 t8 J

/ n+ l2 C- w2 \# \& C8 f' Ksetup-plot1
/ ~! @7 c4 g' ]/ u( e5 u8 v
9 ^* F# X) I& m6 R7 L( B
setup-plot2

* t3 ~0 Q9 A- T) O
( u* Y" [/ D  m. Y( ksetup-plot3

/ F. k7 K$ d" h' qend
# q1 S( e5 j/ l- e$ K+ o+ Q, {3 h) M) [& v' `( w& O
;;run time procedures
( T! s& k( a: t0 R( Z5 E4 z/ T4 s
/ z7 g& t- Y& [2 c6 vto go
2 r. u4 p. R" k6 m. k. |
5 F& G4 P( m# p  L  ]% iask turtles [do-business]
( R+ K" j* Q) p) P1 L; f3 {1 X5 ~) B
end
: M- D3 b: p4 O" F: S! A
% l  [3 @7 B; e, x" w' q9 G  C6 nto do-business
7 m4 E0 u+ j5 g  d$ Y" b( V) P
: O) R- }+ \6 z' H4 R& A# }

/ T" R$ w0 b" W! Nrt random 360
' r0 P/ m) P; W( t

+ V0 k; b% o5 G- o: u. b6 Lfd 1
3 W0 h  Z# f( A2 b
1 p- K6 r# P; w) N$ s+ S: b1 P
ifelse(other turtles-here != nobody)[

, S) z3 C+ a7 ^" F- O+ E% O: ?  b, W' L" ]6 p# b; i
set customer one-of other turtles-here

( [+ O/ O$ k$ Q' C' F
% b! o) v: S' g. ?+ o;; set [customer] of customer myself

6 I  o& V: j3 c, X* Q5 _' W) F* N$ F0 Q: R4 Z0 v/ A
set [trade-record-one] of self item (([who] of customer) - 1)
( p5 |4 X- j) [; M2 h[trade-record-all]of self" s5 r. G! S! y5 T% Y( i
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" o: |0 y2 n( v* A' \6 Q# q
  p! K- t3 E3 D) t$ f- M
set [trade-record-one] of customer item (([who] of self) - 1)% ?& t1 R2 i0 u5 g" Q
[trade-record-all]of customer

' m5 [' D8 t4 F+ W: i+ o  {; @$ u, S6 M6 @+ n; d
set [trade-record-one-len] of self length [trade-record-one] of self

! f- V, Q% W1 b2 E4 ]1 ~6 z9 k+ L* [# }
set trade-record-current( list (timer) (random money-upper-limit))

' v5 @$ f# o) q# q$ e. Y7 u$ [0 s; t6 i7 \, k0 ?7 `
ask self [do-trust]5 @$ G- p$ _! v* O5 ~
;;
先求ij的信任度( G! w* n: D& Q& B7 x% L! H6 a" y

5 c1 M: L; `- `( f4 S2 |1 Wif ([trust-ok] of self)4 i3 }# Y" I% }9 v7 Q7 R
;;
根据ij的信任度来决定是否与j进行交易[2 [  D7 G1 g/ r
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, K' i" t2 w# v  d7 e. S. _/ u. W' ^3 Q% o) C1 X1 u
[
. k# o( K+ }' `% D

- h+ d; q6 @+ m& l7 n# W5 f. ido-trade
  m+ I! H; h, b2 i" ?
2 U! Z3 L  Q3 v# a" Y
update-credibility-ijl
/ m* S) F) @  d
; y6 `/ X) n6 [. D' y
update-credibility-list
0 X, J$ j! h' p  ^3 ]+ M

3 A% v8 E& Y, ^% g8 V; J0 D
  X  N0 p$ H' v) y# c, h5 [. C2 P+ pupdate-global-reputation-list

8 ]6 t- a- U5 S3 ^3 o* ]  X8 K9 y, s
poll-class

- U( n8 f0 e) ~
$ @  w. o- E$ N$ {6 F3 z" pget-color

( J0 z/ b6 ]7 b2 q( a, ^: Z
. w5 o# `% t+ e; w]]
: B) P# N5 C3 e. |0 B' g% }2 g6 Y6 U3 q0 P7 U) E* q: X8 H
;;
如果所得的信任度满足条件,则进行交易8 z- L( @! f/ r2 v
. Q* k9 {) r5 x6 ~5 a- s
[
9 m$ \8 ^. x6 W4 v( E5 {- C
. X/ ?% R& ~3 ~) S, J; {4 o( U  s& L
rt random 360

" U! ?/ ~% c  T
( d0 E+ D! k' z* Jfd 1

  ]: j1 F8 ]) }4 R3 z: J8 }
% ^, _0 Q, _) p5 q0 [) b% Z]
& `: t; A6 J( H1 t; n: x% C

2 h2 F7 k! H8 c- Z  Nend
; C  J) O: A4 P! d1 H9 _- N2 G, S
! G, o2 r) y: M7 |4 m8 t" ]6 d
to do-trust + _& L8 M* C4 _# m3 G% q- u
set trust-ok False& O4 [5 x7 V+ W# b: ?) P- A
/ c8 K! V1 v! |9 ?' [8 K

2 L/ m% t, F: `, f1 @: @let max-trade-times 0& z. P9 _: i2 X6 U* c+ z$ B
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ k5 P1 D9 K- y& t; F/ M
let max-trade-money 09 t3 ?9 v6 }+ \6 W' B
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; j6 Y; L' U+ o; K7 C+ d
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); @6 e+ H: \8 k8 J3 H

$ ^, d9 K0 ~$ |3 q
2 q0 Y( k! i( o3 f
get-global-proportion
" q% y" X; |0 ~$ E; \1 Q! P' Nlet trust-value
, G, m# @6 {, S" X1 k5 F* R& Klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

) o9 _" l: @- \: Y5 ]! l# Sif(trust-value > trade-trust-value)9 H4 g# i+ f/ k( ~
[set trust-ok true]
- R; E! Q- h! s! }8 `) Y; Send
' }! r  a* C7 D" t% k; ]' L* p: ~* N0 l+ }
to get-global-proportion
% C) }4 v1 o* y; X4 oifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. n0 P1 C7 t4 X[set global-proportion 0]& A/ C. t2 b& V, O; e: b
[let i 0
8 T. D6 C) i+ u: }2 v& e( rlet sum-money 0$ G2 u. _  Z; |8 b
while[ i < people]
+ e5 X: q( y$ R; `; q7 m) O[
/ Q  O+ A( p+ a: t- Y( Eif( length (item i
9 z3 z& V- Z& g# t0 p2 O[trade-record-all] of customer) > 3 )

0 n4 x+ g% i9 i  R+ U. \[' j- g# o8 O8 x1 W6 k7 M, `
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 |6 W' V: w" e% Q1 o$ s]% N9 M+ Z. V( C; }) j
]3 q: s( ?" b5 [0 n
let j 0( K% B+ o2 j' a% A- H- w- ]% N
let note 0
% s+ Q- R1 I/ f/ d( U. _6 ^while[ j < people]
+ [3 L1 O: t: O, n0 y% a# A[
( O0 y: M6 Z8 R) t: I1 vif( length (item i
3 n8 x! _& L4 t0 v, n4 r* b; ][trade-record-all] of customer) > 3 )
) \/ [: v. v7 R7 r4 s
[
! j4 z* v7 z" T; F, jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* o9 y" g7 Z" @1 F[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 n% a% S4 s4 b& n$ q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 V  ~0 ?; O2 y7 M8 z' W
]
( z( H. L. b5 ?- l1 {) @]! F+ T9 h+ [. u) U6 }/ q/ F( M/ G
set global-proportion note7 s' S8 D* Z3 p) Z1 K
]
' a3 e( W  x. M8 K9 ]1 Iend
6 d5 C* z& w0 L$ J( f) V& v4 d/ n2 D: \0 j0 T
to do-trade# E, S7 t) p7 H! X; }; K! o/ N
;;
这个过程实际上是给双方作出评价的过程: G/ ]8 G* f  }1 g' n. e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# z) D, _5 N" g" [- Z) Y5 Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" p; t8 ]6 Y2 b  c% {6 c6 F
set trade-record-current lput(timer) trade-record-current+ W" b2 Y1 Y+ U3 q. D
;;
评价时间5 p' @! @4 M. e. P
ask myself [" m1 W" Z7 ^5 E, X
update-local-reputation
& f0 M/ U; |6 x+ vset trade-record-current lput([local-reputation] of myself) trade-record-current
! d! h% Z" Y5 F; i& {4 _! N9 J]
# T3 V) ?% w. f/ l7 Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! N$ T# }& P3 K) f3 Z
;;
将此次交易的记录加入到trade-record-one
0 e* I" m; E, Q3 x6 j5 Z* wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% Z' C7 t. n: O3 {let note (item 2 trade-record-current )& J" T9 K# i" z" T9 |6 H! t' L: j
set trade-record-current* i2 m  |. n% c
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 B  \  _$ u9 U/ z
set trade-record-current
( W7 w( I( y; E8 j& m2 V(replace-item 3 trade-record-current note)0 v: B+ W  F3 g6 s* B4 O, p* C
# s% q0 I* A9 k
4 s3 Y: }. N0 C; p4 D2 o
ask customer [( k9 o- [4 E5 d/ L" w
update-local-reputation; k# }; N4 _/ |$ x' Z/ W
set trade-record-current, Q3 H: ~: _, s# d7 n2 X5 N( a6 K
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( {4 I/ l) X8 |; s5 _]. |& X$ B& T7 h. w# j
5 ~1 \2 ^3 D5 \, M( R# K

) ]! Z0 p& @" qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer: o. P' P4 a4 y( e; I& o6 k& q
8 I/ X( r0 Z1 y& o7 }( Y9 `7 X
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 d+ a. W0 ]- P# s3 S4 b
;;
将此次交易的记录加入到customertrade-record-all- q7 ~+ s/ f/ K
end9 _: M7 l2 }# y0 x9 j3 H

* q, v1 C5 ^. Ito update-local-reputation
/ N2 }0 A! N0 q9 o) g' u0 lset [trade-record-one-len] of myself length [trade-record-one] of myself9 e' z: K, Y7 a9 H) Q( X2 J$ x. X
5 w4 d& F, c3 W
: n. x" `, S, X) j! a
;;if [trade-record-one-len] of myself > 3

, b  |& A4 B" q; ^3 s/ rupdate-neighbor-total# I0 T- M0 x8 @0 S
;;
更新邻居节点的数目,在此进行: e6 ^2 R) o! d- G% V' |
let i 3. G' O8 q# a1 \% Y7 Z+ Z
let sum-time 0
! Z5 Y) m; t! h7 x! c* Wwhile[i < [trade-record-one-len] of myself]5 H9 T1 Y3 O7 `5 w4 u7 ?
[
* o: i/ x& h8 V' `: ^set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* n5 ]  ]. k! a' ?% `5 V* d) K8 Z# J/ Mset i
7 S& G% L) C! U: V4 R( i + 1)

4 m9 Q( c8 C8 P" ]: B]& d( ^* }6 V8 C# [+ G
let j 30 d. S, U. n6 g& B7 I
let sum-money 0
' H+ ~+ L3 O% X9 }while[j < [trade-record-one-len] of myself]2 T8 q% }/ k  l/ H8 S( n: @' d1 b6 |+ f1 Y
[! D9 ]. E3 ~) w" z. G
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)8 x8 S3 r. n4 A7 Z; u3 F# c7 i! E; r6 y
set j
0 g; x6 C. x2 p2 B( j + 1)
8 t' ]* ~. J# u; h' X
]
# i9 ]) ]) x) l6 alet k 36 e  I; M7 u2 ~# p" w* z! `
let power 0
2 @' ~+ E" I1 t/ V* ?0 W; [  Qlet local 09 i- V4 k6 P% o  I! p
while [k <[trade-record-one-len] of myself]4 l; d1 P3 p# H0 p9 z. u$ p
[
. D1 v$ g: d, F! y2 {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) 2 D5 L" @  k4 g0 U4 q4 w8 H9 e
set k (k + 1)2 S5 }( {: O( t1 `: H6 H5 |2 T8 @
]5 U# p& F* T% {4 S' ~
set [local-reputation] of myself (local)
* |- O' d7 @% p; G2 }6 Cend5 a% \4 o# k' u% X, e, \( C7 ^& n
3 h2 t3 z1 ^) O( N2 A5 ~3 x" {7 K
to update-neighbor-total
7 T$ ^& k4 F' A- ^  S' d/ }; s! j' J
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 `  R/ X- K. i2 S- L& E8 d2 s

1 w. z1 h0 R) r/ Y4 t
' L4 W6 p+ r: v& c& b
end( T  @+ D- n+ Y4 R) o6 u  V) E
1 j3 h. w  x8 @, u3 |
to update-credibility-ijl + t3 v  Q4 a5 g7 }3 s9 b, Y
7 s4 b, [8 e+ 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。
$ T" x% @9 n; C, Ulet l 0
( d) `) c& {' ?! r, G' C& }; s4 fwhile[ l < people ]6 E; E! d5 U) s( G/ A# i, Z
;;
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
' I4 }* L, @; d9 b6 h[
. @* \4 {! V& dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ L. _" b. t) n, e5 }; Qif (trade-record-one-j-l-len > 3)8 g6 e* O0 O8 [2 x1 l$ `
[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-one6 b# p: c- J/ F3 K
let i 3
; U. D3 |# d! n  [0 A. _let sum-time 0
& ~7 O. r+ X+ E" l' O# c. Gwhile[i < trade-record-one-len]7 H$ L9 R/ a* P# N5 i+ ~
[( k* U9 P3 Y4 o: M
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  g* _+ R1 {3 ]
set i
- }; N% M2 q; e( l5 D/ L/ N( i + 1)
# f& \% _7 y1 d1 }% o' i  L) Q- O
], C5 H! `2 Q4 y: M8 q
let credibility-i-j-l 0- J( L4 r* }. y# R. H  D" M/ ?3 W
;;i
评价(jjl的评价)" H7 Z9 A3 B) }( V/ j$ A8 p
let j 3
0 t- Z" r4 ^$ ~" E- f* w/ Clet k 4
2 \) ^9 M4 p! [/ u& I4 k/ Uwhile[j < trade-record-one-len]3 q/ p6 T+ c4 C3 ^
[
; b7 Q* \% h) Z; {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% ^6 C0 K' O6 P) V: X. l$ R
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)
7 d1 k4 l. z9 Q# Aset j4 T1 k2 N4 U3 a0 v4 M- U: U& V
( j + 1)
+ C2 H; F5 L# a  M
]
3 z" d% n# j% v2 x' U5 Zset [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 ))
: ^# M; ~' L. @1 w
" _# j/ ^0 e, W6 Q! u( p9 i! d

' S8 z+ O4 w( glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ ?& F; {% t/ }' ]
;;
及时更新il的评价质量的评价: s# x( L' Y; N, X8 ]+ K0 ?
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! p- u9 e: c! L3 Aset l (l + 1)
& m, Z$ w, L! B, |" Q9 x]
! a! L/ Q- ^& l  h* Fend/ u$ ]2 b# k; ^; S

8 w- N8 s+ s) h  H4 Eto update-credibility-list+ l7 V& ^" ^* \. n
let i 0
4 S4 }# Y4 |+ V# }$ A# V, dwhile[i < people]6 K4 i- a# L( |5 v5 [5 ?
[
$ ]3 t, Z' }% ~. V. o* Ulet j 0. }' x4 F+ O& C- q- H: |
let note 07 Z) C/ G1 X" k) J. l
let k 0) |1 M, v5 B  X" b: e
;;
计作出过评价的邻居节点的数目( _2 L! [- m5 q" Z' k. f+ T
while[j < people]
7 a& f1 o# b% ?  ~4 j3 b: u* \[% I9 y; A0 d: ^; t* C' k! w# D
if (item j( [credibility] of turtle (i + 1)) != -1)$ C9 c' G* J0 b3 G) G/ I
;;
判断是否给本turtle的评价质量做出过评价的节点2 b8 w6 W' Q; a3 K, M; T2 p! \
[set note (note + item j ([credibility]of turtle (i + 1)))
4 y- W- \3 N& x;;*(exp (-(people - 2)))/(people - 2))]

7 B9 E9 e2 s  h1 |set k (k + 1)! a2 Z8 A! |2 {5 R4 ?' I
]
( ^! \$ Y& G8 `/ Z( d, J% w# xset j (j + 1)0 e6 _) A0 D( V
]
" D8 R; g, a* p8 Uset note (note *(exp (- (1 / k)))/ k)
! D" q" q) h8 G: w. C% `# g9 bset credibility-list (replace-item i credibility-list note)
" {6 q; @6 h- P3 l6 Gset i (i + 1)
8 J7 E, W& E( A]6 ]/ U# j- y# x. d: j, E2 [3 S1 f
end' }( s# p" ]! e, [! r

0 }0 m6 _# E) A) e& A7 Yto update-global-reputation-list* {2 O  \1 v9 A) l2 o
let j 09 n) K& L+ \8 b, u3 f$ k! ^
while[j < people]
* ?8 Y% r2 H* c[7 i4 A( V% W, `0 z0 P
let new 0. A6 k; F! ?' I! E3 f" @
;;
暂存新的一个全局声誉2 g, A4 T* z9 _" y( c1 G$ E: M3 v
let i 0$ X0 A5 F' O. T& Z. ^& t
let sum-money 05 K5 D2 E8 B6 _, I  P7 _& L3 A
let credibility-money 0
) |1 ]2 b4 `. j, @while [i < people]
! n* g! i! u/ H1 a' A# H; s[
4 S% I; P, Z, L$ S2 I5 F1 {set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): q1 w5 B: q+ o. O1 g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( i9 {5 x9 o) K
set i (i + 1)( M; k5 }0 _3 L
]) U+ D( y5 k: i) Z$ y
let k 0
  y/ ~/ D. g' b' o0 h9 K, A/ zlet new1 0
1 l( L3 S9 @/ H: swhile [k < people]/ k# m# @, V# Z0 r; t) Y' @
[. M6 n6 F# \! H. w. p) J
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)
0 p; ?/ |% Q8 G7 M. Sset k (k + 1)
- |* b; H9 M/ w2 f: c: ~2 S. f  d8 W]/ d1 @/ H* P: ]: w! S% E# W/ [
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; Y/ X+ T6 }1 p7 X) v/ d! Y
set global-reputation-list (replace-item j global-reputation-list new)4 y+ y* K- n( q
set j (j + 1)% K1 t% N3 K/ Z+ u& f7 Z# @: D
]) o7 M9 h3 `, V6 _% o( {. S
end4 V' I' N' Z& q* [0 T. |

) W9 L* C, B/ q( y3 L
7 F8 ~( A5 Z" ?9 [6 P  r- O# `- M6 V, \; V6 }
to get-color
- B! z1 d! N! k  j9 w3 v  T4 S/ ~* e+ ]7 e. v5 {8 A# v- _7 R$ u
set color blue
7 S, m4 {, S/ n" P" y3 V
end
; o7 `1 m: x9 \2 g; n; k' O9 }% k
to poll-class* e  Z9 Y$ N. ]6 B& K9 b
end3 g* S5 F0 Y0 s( ^( d0 K

3 }. g$ a/ k& n% lto setup-plot1
+ [% z& X; G3 m9 `9 F8 o% s
! T4 I1 J0 J$ u3 }7 Q7 |5 Yset-current-plot "Trends-of-Local-reputation"
3 N) I, v! w0 l8 D

7 `+ }' s# }# x3 zset-plot-x-range 0 xmax

1 k4 w( S6 ]. S' z* v( U; T5 ~5 A
set-plot-y-range 0.0 ymax
" w: N6 [4 V. a5 x! Z2 b
end
+ L5 H" _; C, q6 i) T* C+ h3 P( g
, t% v/ o% K" }( {, j2 ~; |to setup-plot2
- B- |* G, @, |/ L7 K$ P' `3 g6 f: N6 ?2 W  V: s9 r
set-current-plot "Trends-of-global-reputation"

( @5 ~; Y# V% B5 }- c" d: _% b- X" M1 M7 E' U; l
set-plot-x-range 0 xmax

2 Z  F! H) O" u6 f8 V9 g" ^( X" L1 P1 C
set-plot-y-range 0.0 ymax

$ i" y0 X* Q; V0 _, l' j1 tend! d% E' r9 G0 f6 L0 d/ [; b* c. |
. M/ s' D8 l1 q% i) V
to setup-plot32 f/ F0 D8 z3 r8 G1 j5 O1 ~/ M
% h7 D3 b5 U; H/ v3 X
set-current-plot "Trends-of-credibility"

" r8 a2 ~9 y: W; e6 x6 Q. X5 V) o- T; S, I, E
set-plot-x-range 0 xmax
* G! J4 K- d* |" V$ ]% Z& ]
  K! L) s! v8 [6 }/ F3 G/ k
set-plot-y-range 0.0 ymax
! c1 M& j2 m: ?. s+ S1 L5 a) ^" \
end0 b& n! ^$ t1 H$ \8 R
+ I, G; \! Z2 M" E, v
to do-plots
! L* U- h3 z4 ~, bset-current-plot "Trends-of-Local-reputation"- V& {  t# |% s7 W
set-current-plot-pen "Honest service"0 _3 M4 f# B7 W1 \: \
end3 M6 a2 M; U0 V; {) o/ N$ v$ ]
# H1 n& Q3 Q' m6 l3 `) i6 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.
2 L% R4 [5 W" p# d. q. K! F4 S, ]2 y. t. J5 O
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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