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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:. L) X) P$ j4 V& Q  ^2 s1 g& |( _
to do-business
6 t( p, p+ l* [3 x rt random 360
' u& w# x  D) g# `! [9 N fd 1
' l) m* W0 `4 ]& q  Y ifelse(other turtles-here != nobody)[
" d( c3 Q/ N6 n; u# }2 v" D   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
: B, {9 J! c+ u   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 Z" c8 }5 l% z( ?. z3 _2 l* m/ J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# v- H+ n" H  K3 q& C2 c3 b   set [trade-record-one-len] of self length [trade-record-one] of self
, u( S9 V) D$ b7 ~0 H   set trade-record-current( list (timer) (random money-upper-limit))
+ y$ g. Q: P/ a$ F% z& c
5 N* F3 O% a% J" _  O' H1 q问题的提示如下:
! Y1 s) F5 Z2 L2 m& E
( W0 o# V( y8 a$ f. Z/ i8 U! \. Zerror while turtle 50 running OF in procedure DO-BUSINESS% U3 R9 [* G4 e
  called by procedure GO" y9 W6 V* ?- I8 t) z8 m
OF expected input to be a turtle agentset or turtle but got NOBODY instead.7 h4 d+ S1 r" j( D+ N1 d$ f
(halted running of go)
% _7 U) k3 U# [  l: D. I5 u* |2 r+ X# A. @, Y& C9 m
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~~* n; E5 `* _) ]5 V8 W# P$ I
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4 v4 x2 v' x! _2 {9 @
globals[
) U/ \% C% e- [& z; V9 G8 s' q: Hxmax
: n0 ?, N2 o  }- J! tymax% n" T. v3 T: e$ I, M5 j  p
global-reputation-list+ r$ E. {) x* p  T9 E. X# V
: n3 G  H1 T, z+ Y* m% Z1 Q& Y' z
;;
每一个turtle的全局声誉都存在此LIST
/ y4 _. h7 m$ x' G/ L5 w, ocredibility-list% C- {( ~- Q$ ~: M3 |5 ]8 j* P
;;
每一个turtle的评价可信度9 C9 G- f. x5 _9 B; L! L, Q( E
honest-service; x# s. W+ j! D( c
unhonest-service
$ `. |" ?) }) j4 yoscillation! U  t: \& ]1 f, |2 l0 f
rand-dynamic' t! D3 d  p2 `: ?5 }
]
/ T* J" |1 o- j0 T3 A% G" c* T/ d. `# x3 c+ H4 c& L% x* z
turtles-own[1 V& {& _& L# a
trade-record-all+ ]2 L+ D+ s+ @
;;a list of lists,
trade-record-one组成  J9 K) f9 u5 F+ M
trade-record-one, k/ d! |: a5 `4 b* H3 f9 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
( x: A$ d$ W0 a
1 R, }1 d% N3 y$ {. g; G;;[
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]]
, o4 |/ y7 T4 R, H( E# ~2 \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]
7 ?5 z0 Q. y+ @) R2 j* wcredibility-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: _# a2 G: \. L
neighbor-total2 ]; p; r; S& W7 T& ^
;;
记录该turtle的邻居节点的数目
! Q3 m) W4 W* i5 R  i4 P. \trade-time' R+ l) w& U3 x+ N) b+ l
;;
当前发生交易的turtle的交易时间
$ s, k, @8 Z$ C6 b# F  Iappraise-give
3 m# |! s6 s7 X3 k3 [8 e;;
当前发生交易时给出的评价
8 O( U* _6 O) B' U; Wappraise-receive) I3 `4 ?6 |0 u4 L& b! {0 ?; C
;;
当前发生交易时收到的评价
2 B! f" t" J  W+ v$ W; K1 e% Xappraise-time! w! w' p# P3 E# a
;;
当前发生交易时的评价时间; t  u8 J. m8 I
local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ [# ]! }0 T# D! @; \7 c) k  x
trade-times-total
* ~! R2 ^8 {, \, x;;
与当前turtle的交易总次数
. w+ y! H+ K! ]" |, y/ \1 }$ p  btrade-money-total
+ k  i4 K: E1 R( f, O5 U* l;;
与当前turtle的交易总金额
0 M8 Z5 x5 \: @. M) @local-reputation
2 g4 Z" n% c( E+ W' P. dglobal-reputation
% F7 g1 R: g, w2 D; icredibility
% k8 Q. j0 Y  s3 T# o;;
评价可信度,每次交易后都需要更新
' A- Y3 N3 B# H) P. n1 m' k( a( ncredibility-all1 i9 P) w3 K/ f5 k
;;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 P& }- Q1 F' p' O0 c3 Q% e4 `
, C6 U( T4 W, ~& n
;;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
0 H5 J3 ?3 \! f" z- m$ I: G) J! r6 i- ~credibility-one, H5 |" j; b8 {
;;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
/ A( l& \- U) H. D6 L! kglobal-proportion
0 |$ M0 o- V* G! gcustomer
/ D$ }: h5 u% J8 L2 j( n2 V' icustomer-no
& P4 O7 f, T) n. S5 t3 |! E' utrust-ok5 n! T; x7 ]# a7 N
trade-record-one-len;;trade-record-one的长度
- |% @* w: V' I6 U- G6 a]2 }8 T: Y- \0 ]- X4 A8 ?, `( h4 F
6 o/ `% S$ h+ Q) }% F. s2 {9 N4 z
;;setup procedure
* J( @& m+ K8 b8 A6 X" E5 e0 F$ P; W1 c& I
to setup
$ C+ ]# G( p4 g: q0 j2 f7 j" H$ |0 Z
) l+ w7 K$ X. t* Pca

; R) K& K! v2 r) F: Q$ `7 M) ^' q
  T' y! G) _% [initialize-settings
/ z: y5 T5 c% p  d/ Z
4 I  n# y& e5 ~0 u) U
crt people [setup-turtles]
9 Y" ^+ m7 x7 q' J' d$ d2 E4 g; ]
+ K- [" M+ I. [' z1 n
reset-timer
8 g6 C6 O; k6 g3 I3 p. J3 h" m
* o) B+ V/ m8 T9 K! Q
poll-class
$ v' r/ N/ o9 T+ J# W! ]

2 U( j% L- f6 T* R( d  vsetup-plots
+ \4 y4 @5 u+ A1 D$ h* ~% `( N

* a, p; Q8 I6 I% bdo-plots

2 y5 Q% `# J; Kend1 k6 _: ?( W) c  ?

! W3 s, \5 {  T. }1 `to initialize-settings7 m* H4 X3 V! T) }! [0 T+ O
7 X0 {, D0 @% K: m2 F
set global-reputation-list []

: ~* N2 Y1 |6 c1 ^2 [& d" Z' m0 ^
set credibility-list n-values people [0.5]

. R9 p) m% h1 H1 O  l  [  s$ u$ Q% r7 a/ v6 _7 R, Y' F
set honest-service 0

3 Z6 i7 L; ?2 ~  H. H0 {+ ?: H5 A# R/ \1 f$ h+ G
set unhonest-service 0

) g. Q" `: F( q; o- i4 v* \& h1 m  n
set oscillation 0
$ g, x$ f, q* C7 f' s) S9 _2 @9 j6 E1 o
' a: y3 ]2 f/ \# e% T
set rand-dynamic 0

5 ~: W. p5 e; Q5 B/ p6 R7 v# B9 Eend% D+ v0 b" I3 L7 \  h
! x' Y& Z  A; U
to setup-turtles 4 C+ h3 M* X; ?3 g. P; l) b/ J- g
set shape "person"4 K* O; y' T( G6 L1 o: T" S
setxy random-xcor random-ycor
$ b5 g6 H! I; @; q: b2 |set trade-record-one []
* r8 C0 l7 }& b1 ~- h, p
" ]- z5 }4 v, H8 ?5 s, G
set trade-record-all n-values people [(list (? + 1) 0 0)]
. n& l' w$ B, s7 w. L# b. r% E
5 V1 t' `' {1 X% z3 d
set trade-record-current []
; ^" ?4 O1 g+ X9 d6 Gset credibility-receive []. i0 Y* Q* r) l3 d, j' m
set local-reputation 0.5
) ?2 R4 E( E" h" I2 Z/ Kset neighbor-total 0
0 A0 d& o7 D9 K) N& _2 eset trade-times-total 0
7 p9 \# m/ Q& Qset trade-money-total 0- m! S2 B6 j: y4 `' B1 Q0 b
set customer nobody
7 U/ p! q, D7 r' t; I% o) nset credibility-all n-values people [creat-credibility]! @1 x1 \9 F' i4 a
set credibility n-values people [-1]
+ [( }! Y+ A1 A2 A! }: |get-color) J9 U, K. {5 K- m

8 d) a7 a' z! r. s% Yend) D- K  m) c' [6 G1 f

5 P" _- i/ W9 B" ]to-report creat-credibility/ D+ j6 f$ t. ?! X3 `
report n-values people [0.5]
7 e! @6 s' L& n6 \end
' M8 N: S% D6 L* ~. W
5 M2 v% f( X0 t% K* O; ]- qto setup-plots: G( z, O. D4 x8 t

5 c9 F3 l5 [6 R) D+ a; k6 oset xmax 30
4 E! J, B" k# Y: R- _

5 t5 p7 T# E7 m+ |set ymax 1.0

$ u4 L5 D8 v3 C/ @. L" F% S: ]. b: S
clear-all-plots

, h/ x3 x& z/ I. D2 ^! x. n3 {: m) X* j
setup-plot1

1 E/ o& V# f% p( u6 c5 Y  V# V# _/ _: N- U5 H- u/ i. [) r6 ~
setup-plot2
$ {' z! E" ]$ v. N- e+ W% ?) I

3 N7 W: V% m3 @; P' F( @setup-plot3
. C, ]- I  }* U! L! b
end
0 ?6 B/ w1 y. n& |, [7 p, Q3 Z! W4 k+ W# X: {" o6 g
;;run time procedures4 l7 B8 ]6 x; `* z. C1 G5 T' a8 k% I
) G( }% z5 ~# x. Q$ Y
to go
6 ~' {) i" ^" E9 h2 @8 ~5 T
: @9 a( O6 Q, Q8 W" S2 u) Yask turtles [do-business]
  y9 Y/ q$ [* g) q0 t+ \
end/ K1 w. R2 _$ m( Q" J
, k; A! [( G" E% y" o5 _8 n# r
to do-business 2 u8 Z9 a9 u* T" |& y
  r9 p: @' Y) ^3 L! s& l& ^

& H/ Z; V# E4 ^- h# d: n9 Grt random 360

5 B1 Q8 A5 e- T+ e" I% T5 [  t
* x& n) r9 T2 G1 U* _% u- a# t$ rfd 1

5 c! V/ X/ u' J4 ]( X2 ?% U) K0 ~6 C3 L3 R; F' U7 x* q
ifelse(other turtles-here != nobody)[
  k. }% S% W! R8 c2 @9 w1 V
# A- k+ I8 T+ y; g' j
set customer one-of other turtles-here

: P) _- F* D% E7 k( @
$ a8 J# a. Q6 D% N;; set [customer] of customer myself

- a2 f% r& b5 r+ ]* w. x7 Z: D9 q: ^" |3 T% p1 e
set [trade-record-one] of self item (([who] of customer) - 1)2 N, ]& m$ A2 K, F# p
[trade-record-all]of self* I* O# G' V0 }. K. g( R( l
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 ^7 O8 m4 ^& u: P& h4 w
! ?* B- V0 o8 I7 H9 q( M$ O* D% y
set [trade-record-one] of customer item (([who] of self) - 1)
* m5 E" X6 a4 @2 V* @: h. ~[trade-record-all]of customer

+ t* \# |/ |% @5 n+ e+ J+ C0 z5 I1 Z5 b4 z% x' S
set [trade-record-one-len] of self length [trade-record-one] of self

$ p1 F2 S$ a5 v1 A1 A+ m' l+ j7 L3 {! p% l7 O9 c; Y
set trade-record-current( list (timer) (random money-upper-limit))
- Z# C9 q" Z) D, @# ]/ Z. [) C
! q* M; H( v0 y0 l, e
ask self [do-trust]: B- t2 p7 [# T, U
;;
先求ij的信任度
$ o" S) U/ |* o/ z0 Y
6 n* J1 y8 F3 f% G" @6 f  g. Cif ([trust-ok] of self)
' d: w8 U% V5 X1 D! a;;
根据ij的信任度来决定是否与j进行交易[) X& J( q" M0 ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ Q# J3 u9 r1 k0 G4 u

) `% p, c1 @) L& u! [0 j3 v[
$ ^0 v- v' L0 Q$ U
! t8 D: K1 Y7 }. p- c. L
do-trade
, h; R' _7 s. e5 [  Z' m
/ {$ Z" @8 b) v2 Y
update-credibility-ijl
4 I- C2 b# |! u2 Q: p2 @
. @# K/ L" w- {7 S. V! S
update-credibility-list
$ q0 Z: A) Q5 P0 J8 U
9 L4 O; ~( c7 G) L. @

* S5 l, _+ ^/ I& L0 a4 yupdate-global-reputation-list

( u" J5 ^! G$ }# T1 y  ~
) s8 x$ x. s9 `. ]' Ipoll-class

( a  E& _7 Y6 b" K: h, v$ u" w/ I. h
get-color

6 R" Q+ Z' ?$ l* L
  j% z; ~9 k( D6 I9 \* ^]]% q  y% M$ @6 J- [1 m$ X/ j5 X
! c* F! h" r; R9 i
;;
如果所得的信任度满足条件,则进行交易. w/ e' W, g* `3 ^

: U. ]; V  v) E( w[
7 E  ^. a  ^9 }

) ^4 w7 P+ M+ e5 Z. drt random 360
, B* \1 B& ^; R3 i4 u1 d- [$ \
/ {% I3 m, n4 {9 P# C7 k% ?3 z3 X
fd 1

% ?) j2 W5 q( h* i
. `- S: o: o7 Q1 A]

7 q% G6 P) P6 d  V$ ^* Z9 f( p
$ t- [9 `( r( x* o3 o# Eend

2 G! h; S( v6 u8 b6 \
+ I' N; j, P3 ?2 o: |$ Q7 `! gto do-trust
0 |% _$ T3 {9 C0 N) [  |: K- Gset trust-ok False5 Z- j" M, A1 `1 V3 M' ]+ U" N

# p0 l2 D- p  p0 B6 d
* f" N9 W4 Z0 l2 s3 R8 C
let max-trade-times 0- ~$ S' X4 n' Y* s6 b+ O* P% J
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ L% B9 m9 z$ a
let max-trade-money 0
! j1 n: e+ l4 a; t$ n3 b4 _foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  k: s, D# W# }" mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 y: u6 _! k& z
+ d( s% ~$ w. |9 P! [

+ b+ T6 P7 w3 z4 R, Eget-global-proportion
% \. U* I* E" A5 X# xlet trust-value* M/ S. }5 x* q( m1 Y( T
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)

- o) T9 H* ]" _4 Eif(trust-value > trade-trust-value)
; h. Z' Y' \: A9 i[set trust-ok true]& x# f# N9 x* p; J/ k& t8 C
end4 V8 ^! l' s: ]. n

/ _7 y0 C2 a( a7 dto get-global-proportion1 r, B' V8 z* {, `
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ E& v% W+ G# R1 {, Q* d7 ~
[set global-proportion 0]
( x' M) K/ k* ^: L[let i 0
# V0 w# E  u. k5 t& Rlet sum-money 00 Q* |' {, }5 [, G/ `3 s* s" i; r0 t
while[ i < people]+ @# W/ e7 n& }% A8 A6 y+ I, A6 o" x
[
+ h6 f  V7 `9 S9 Uif( length (item i
2 t3 m0 P: K& U[trade-record-all] of customer) > 3 )

) }* R- E4 _, p0 A[
! [" U7 A' R5 s. g  o) dset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 A7 p' Q3 b7 \* g1 H! r]  T: |/ K: V7 q3 {) {9 [! O
]- X8 ^% A( L- A, g" ^0 B
let j 0; c* U3 W: n0 l# e6 f* Z# c  T8 V
let note 0
2 N3 X, {8 J: e3 Swhile[ j < people]
$ O! M# i- D0 z  i7 q" F[& T# \2 @9 ^- e6 \9 P  \3 m$ E9 |& B
if( length (item i! _  C0 _6 Z0 m+ k+ T# P$ W
[trade-record-all] of customer) > 3 )

0 d+ [1 M  A' v( k[, X. Z* A  ]5 ]% K" V( c$ y" ^( I
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% x* ?/ s% T5 E" k) k7 k. I[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 W, J: U9 ~$ j[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. A2 H* v5 U$ B9 L1 Z1 _
]
, x1 J; r( _2 a* A]6 H; ^8 G1 ?% h! g0 L( [) r
set global-proportion note
0 M2 U4 R9 s& _: t4 a$ e# r7 V# e]
& N1 p$ W' Z" Y+ K6 G; _) ~end7 h3 m0 A, T- L" R3 F% A2 _% y+ a

6 R/ n& J/ e7 Q9 n; Y1 N+ Eto do-trade
  _# J9 m9 ~3 U! W9 Q6 v/ b;;
这个过程实际上是给双方作出评价的过程4 i0 l( R. {7 v' G) F+ }" J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" N+ P, b4 v( g1 V  _6 r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ w5 E$ T- W" Z$ d' w: y
set trade-record-current lput(timer) trade-record-current
# ?1 R" i+ |5 e3 s% ]& H3 V6 L;;
评价时间3 s" y5 r5 J9 ]
ask myself [6 o; I. C/ v4 P$ ]) ]0 z/ I% }2 Z4 i
update-local-reputation
% ~  u* z8 `) A. i& I# pset trade-record-current lput([local-reputation] of myself) trade-record-current
; G. a- J, B* z3 k4 J8 p0 X- [/ G! E]7 k0 @2 j6 w3 _
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 J. C, Y& J* v% q, M- R% @
;;
将此次交易的记录加入到trade-record-one
  y! u* V9 j- }! iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 l8 W; k: h/ o, N/ W
let note (item 2 trade-record-current )4 d, A' h  h; @; w) A' b3 G5 i! `4 S" v
set trade-record-current$ y8 u. y' F  g- W/ Z  s
(replace-item 2 trade-record-current (item 3 trade-record-current))

1 Z2 d/ V$ y% Y) Y; A9 w; Q0 h/ jset trade-record-current
' \" K6 y/ D* Q4 S" M- I(replace-item 3 trade-record-current note)
  U+ Y+ R. f, L/ A* S: v- o* K$ p. k7 q9 T* x

, N3 A9 @+ K1 {$ wask customer [
' X0 [$ D& T3 I, g/ ~! b, |update-local-reputation2 |- R$ b& Q; q* s
set trade-record-current
3 i; U" T* b0 J2 n(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- a" l; x, y8 A]
# v. @) v, d5 ^' W# T( ^+ A* @# p. o, H4 \; N, x8 I

2 Z2 T& J" i2 J& m+ _set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 s- L2 ?' \9 J9 P% `
# I1 z& m7 S1 ]* @; u
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 m) q( b; U/ N6 h
;;
将此次交易的记录加入到customertrade-record-all& c5 f! t8 C7 s7 O6 ^
end
1 d$ O- \& u# R8 {' G! r, U* J! A0 A0 Y! Y9 N( @, Q% D3 i8 \! e
to update-local-reputation. S2 L( l3 q  |1 m1 j
set [trade-record-one-len] of myself length [trade-record-one] of myself) U+ k1 p; X& ]: b
: V2 ^/ j2 i) ]* D) O# ^  t
+ \2 V: a/ q, ^  G
;;if [trade-record-one-len] of myself > 3
, K1 I% d/ a4 p0 [. ?( I
update-neighbor-total
. B5 Q$ ?: W# `3 G( k" y, x# z;;
更新邻居节点的数目,在此进行
8 n3 P3 X9 H4 f( mlet i 31 R( K( R! A! C- u( Y
let sum-time 07 T; \# G: r" f+ {: z
while[i < [trade-record-one-len] of myself]
* @7 F5 l5 d3 v% P( M7 J1 q# c: D6 ^; A1 x% e[5 R/ D, ?9 q2 p* `+ D  Z1 y! K
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ O: k, \2 _; Z/ ]3 Y2 U
set i# T0 N9 X. D( v
( i + 1)

& u+ H! `9 e; w]) D- L) O, a/ a
let j 3/ }6 D' T. u% l1 y+ i  l- _
let sum-money 0* r# q! K8 x$ P: `0 k( h: `
while[j < [trade-record-one-len] of myself]
! s, x8 M& }* `! @' `[1 g, m4 x- C0 X& ^
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)
7 a1 H. j# n0 ~3 w: Q7 q1 H6 D9 Tset j8 O" R( g+ E5 @. ?
( j + 1)

5 k  M1 N% u0 q- x# @. h]
9 d$ |& C7 [0 y- L+ w3 Clet k 3
0 I0 Q, ~: K# y/ t4 O6 v* \, S2 Clet power 0
# C# i* @; F, `( b) y! u7 U; elet local 0$ d7 D0 N( f# ?/ d
while [k <[trade-record-one-len] of myself]
& B& F* h) f2 K- U( s[
. c, q, {8 P: hset 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) ! a; n% F; `0 Y4 I/ i+ v$ a" N
set k (k + 1)* k' y7 H. S. J# J
]! ?4 z1 [' z6 N0 n/ f( h# [! Z
set [local-reputation] of myself (local)3 B+ t! x6 H) e: N8 t1 A) E5 d
end+ u2 g5 W( t8 I( X4 [

5 K" J8 |" S6 O7 I; `1 gto update-neighbor-total. x! j. R2 A1 o- s

: Z) p( T- B& }% nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 f4 g6 W$ D  s" ^( [
6 G; ~$ Z4 j* K, i& i9 Q* U

! u! V* i5 E! W: Jend
& }4 q  b& o- Z3 s1 i* P
; \- Z: u& `" W' Ito update-credibility-ijl
' H7 i3 I0 g& J- r) O, h9 {$ e' L3 U2 g1 ^4 L7 ~
;;
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。
. U! }0 _: W0 n; ^1 Klet l 0) N# ?; T/ v5 X' C4 X3 }
while[ l < people ]5 y* K) o9 i9 x8 K
;;
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9 t1 n% e! W  ^# T& Z# K
[
8 ?% }3 x/ s- p' ]# Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 w  K! [1 G4 \! k+ Pif (trade-record-one-j-l-len > 3)
5 c' H7 m5 b7 Z) B2 [5 N[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& M! L1 n! |6 a6 x! ?; [0 E( J
let i 3
, B" }6 k4 y% U% i  Zlet sum-time 0
7 e+ P- p6 Z/ s& j4 e6 dwhile[i < trade-record-one-len]$ a) c( ]' W' r7 `6 ~$ ]
[
+ `& v  G: P1 q( x9 o; r6 @set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ X+ r0 o/ l9 t2 _1 ~6 h* C7 k
set i
* s7 @( y- h+ w+ @) K7 {( i + 1)

& u' _" _. X5 t9 l]
# h1 \2 p; q! Ylet credibility-i-j-l 09 o1 P! E9 T9 D
;;i
评价(jjl的评价)9 D+ E( }7 F. v# M% ^0 _* i" ]" {
let j 3) D/ f+ J1 c. S# b
let k 4
/ e/ `% w7 X: l! H; ]0 L, y1 Dwhile[j < trade-record-one-len]& v: t' I4 u7 z4 X3 a
[7 E6 }/ J- d) J
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
5 E' O3 q! p4 P7 c. z" c/ O# Rset 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)% B  y0 s6 }8 v, p- @
set j) i$ U" Y# c3 H0 ]; U4 L+ I) F6 N
( j + 1)
0 g9 H, v& A0 [) p7 [2 w5 P
]' \5 x& `/ g3 r$ k9 M
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 ))
, E; J0 q4 w2 P# x3 f$ {; L+ o
2 p9 U) l5 Q1 g# Q7 s* n

$ S3 ]4 m6 \8 `# ^" \( t. ?let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! P" I; Q+ i! [( V, u- }
;;
及时更新il的评价质量的评价* ^" j* a- i: [& y6 }* E: A. _: w
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ q  J2 w: j8 T3 Nset l (l + 1)
8 ^7 W8 J- L3 b9 h/ m! ]]
, @: i+ U  n2 tend
6 c( w# }; x5 G2 W) g9 N' Z/ u6 j3 Z" ?" w
to update-credibility-list
8 U5 _, T6 D5 m* o) y3 Tlet i 0) X, m5 U, z! I) F5 P
while[i < people]0 w! W2 `% w2 s% b/ e; s
[
, y3 x* I; w: L2 a% @* Elet j 08 ]8 _9 o' e* h" m' F! J. s2 Q% ~
let note 0
) \, K: |8 |% f% m- V" A4 f  Ylet k 0, X, J& X+ r4 ~$ n& z4 a5 P9 @
;;
计作出过评价的邻居节点的数目
( e$ ?) p, X1 I9 y3 q8 ewhile[j < people]1 w4 u' P% `5 ?4 U
[* [# e. L$ ~$ M' M4 i1 S
if (item j( [credibility] of turtle (i + 1)) != -1)
* N9 Y; s! }# O;;
判断是否给本turtle的评价质量做出过评价的节点
* d% E6 b7 F. o! H. m) B- {[set note (note + item j ([credibility]of turtle (i + 1)))/ D1 g+ I/ }0 v; N, T
;;*(exp (-(people - 2)))/(people - 2))]

& T: q5 q" T' B0 E3 h) |0 cset k (k + 1)& I2 B4 m8 Z! V
]  H. @% p9 r5 |) b
set j (j + 1)
# y' v  }& B* c/ A: h1 O# w" E6 l]
. H* D/ ^2 h. V9 Dset note (note *(exp (- (1 / k)))/ k)
0 W: L4 X$ T! xset credibility-list (replace-item i credibility-list note)
# j+ I1 |  g) a0 X! I& P& T3 Qset i (i + 1)
# N# J7 x2 x* x* N9 _4 A]
; A$ N2 o  E! T2 b" Send' i9 ^; \) M2 Z& L6 {) ]
, o- n- m; M" b: _+ p  o' c/ x
to update-global-reputation-list
* x2 w6 c" e3 X" Plet j 0- E% V3 O1 k4 `" n! X1 j  q$ A
while[j < people], N; S( V3 i! d; d
[
& D; i9 x3 S" x) u3 z' Flet new 0
5 t# R" ]7 \  M;;
暂存新的一个全局声誉
$ p1 \+ A- G  Blet i 00 g, N4 Q3 Y& T8 N" x  A
let sum-money 0: u  ~, O9 B# \0 N+ t
let credibility-money 0) C$ U% _) o& M$ }) j4 ~# s
while [i < people]: g# N2 O- p  ?/ s# N" {* W! m
[) u! Y/ n4 \& V9 ~, ]0 A$ Q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): k. L' `1 W0 u  a* c% m
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# b: @9 v* F& u! |
set i (i + 1)( j' H7 c# |% E, {4 |3 ]
]: s4 _: ?, x) l. |* I
let k 0/ N# x* K( a& K6 X9 r
let new1 0
7 x$ \1 I4 u% r! g' dwhile [k < people]
, z' |! [( f9 d[: H, E0 T9 C( Y! h# O. W
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)1 A& y) H  {! `1 ]% N4 \8 f- w
set k (k + 1)
/ _7 {" J5 S! ]/ v+ ?# k]
. d( z- m4 x% x( W2 h# Mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; p! D2 A. `; d- {
set global-reputation-list (replace-item j global-reputation-list new)$ t* i/ Q' z8 t9 i# ^
set j (j + 1)! D2 W: y" g' l- J2 a& j8 [
]4 ?5 s" |3 `7 H9 D, t8 U
end$ f, L6 `0 K( F
5 `/ z$ ~. F' c2 `, r
7 i& j& i8 H$ @/ w$ H9 X
1 p* }* B+ o; p3 V7 w
to get-color3 b. f0 w/ }* F9 H: ^8 M# o
9 v% n% e" r: \  q8 B8 F
set color blue
- R* F9 w+ u+ @$ l' U  s  [- h
end0 U1 p% \) X; {/ w- U) a' ~0 v- J" B/ b# B  K

% q: a0 X! l5 Q5 tto poll-class2 F% z: m1 e9 L) Q& m
end
* l8 D0 _8 V. U5 }  A5 B1 c9 i7 Y  J
to setup-plot1
0 g- Q# n2 y5 G2 l% w6 c: g( b! y8 P6 g
set-current-plot "Trends-of-Local-reputation"
/ J4 S' L" M& Q+ k5 N: y  x( w

% ~9 q3 B. t3 Zset-plot-x-range 0 xmax

  J6 }" O+ i  H6 ~+ p" y/ A7 j) E. @9 |
set-plot-y-range 0.0 ymax
$ ]9 v7 ^- V" f0 I. b* |3 x4 E
end& P& ?# s) W; |* x+ a8 ]

) o/ ~$ }" j5 p1 d3 `, Zto setup-plot26 H! `' ]- n0 G3 N

& Q, P7 \: d( y5 R6 l5 iset-current-plot "Trends-of-global-reputation"

9 k2 R6 X8 _& p$ c& {/ n, E# t" B1 P. Z, i
set-plot-x-range 0 xmax
- s1 V, h, k1 G/ \* y' N
  c: e' x7 I9 _) p; T, ?+ b+ m
set-plot-y-range 0.0 ymax

- g& _. S1 |* Wend
! A0 w4 E( \6 z: V- `& X
- e8 T3 K5 U1 v  g, b0 fto setup-plot3
7 W0 ~$ S1 L) v5 a. c0 M! D+ o( d6 m' x) `" I/ |
set-current-plot "Trends-of-credibility"
0 T# u% `% r1 T+ f9 f2 U
! ~0 Y+ e, W; R
set-plot-x-range 0 xmax
+ q, O4 \# C8 `6 I3 v8 n

' a& m: W7 {7 p! R- hset-plot-y-range 0.0 ymax

) M* I' R3 C8 E" h8 p6 }end
+ I2 C5 l' V0 d  T4 x6 `6 P# r/ y. K' Z, g, ?' S( F* V( C/ j( U
to do-plots
" V! v% r$ j3 J( c+ Y0 T* |7 p7 Qset-current-plot "Trends-of-Local-reputation"/ e2 B* O! f2 r# F4 v3 N3 Y+ \
set-current-plot-pen "Honest service"
0 b6 P) ^2 K4 M- C  f& w/ X$ ~& y* zend
, H2 r/ y/ q& j6 _- s4 o: P$ M  E3 s# K; d* y
[ 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." g! y+ W- V1 o$ w
) E0 I% ^% e# z) 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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