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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:
, X5 p' o5 _$ }1 S5 uto do-business ) @9 Y& j) W/ @9 \! o8 s
rt random 360
# k, c% V0 A8 S# |4 q* x2 M fd 1
/ E7 ?' W' a' d, e ifelse(other turtles-here != nobody)[, b( c* }9 ^* s$ B. {+ O
   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.0 \/ u: J, x( x: W- Q+ j6 A% y6 G2 i8 X
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ X! ?9 M: N! o5 K: q% B   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer3 Z$ Y! W& v( m  Q0 R- Y; A+ Y$ \
   set [trade-record-one-len] of self length [trade-record-one] of self
, `# U: E; h6 t6 O# k8 W   set trade-record-current( list (timer) (random money-upper-limit))
, b: Z4 A9 T& ]6 @. V" p" a' x( Z7 r# J0 z& H3 q$ F( M6 e
问题的提示如下:' @7 h: m% Q9 ]2 X: |8 T

* Q% a/ _7 l1 Y; Q+ V1 \error while turtle 50 running OF in procedure DO-BUSINESS
: [$ _! L. o. x  called by procedure GO
7 R( m6 w+ U1 Z1 Z( V+ e7 ?OF expected input to be a turtle agentset or turtle but got NOBODY instead.: t) r' I* t6 M- c, J' f% q
(halted running of go)
; g# c* o& j! X+ Y8 K% s  s) n+ e
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~~* T6 Z& u2 U! P' H
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* R7 d% K# e; o4 _3 V5 }+ x; w* f
globals[  g$ p$ ^8 g0 f: d
xmax, U. c- k/ Y4 }# K# v
ymax* @% V4 G+ X* ]6 X" V! {
global-reputation-list
: [& i, _8 ?# ~: J& B8 S/ f/ g. |( _3 B
;;
每一个turtle的全局声誉都存在此LIST- U4 Y' l- o. X# ~0 f* `
credibility-list4 p5 `. F* U) d( R% K2 k) u2 v% g
;;
每一个turtle的评价可信度1 C$ c' T& T4 U7 z& ]
honest-service
3 Y- g& y0 b- o' P& _/ yunhonest-service) e8 E3 C: X5 I* n( O! i4 N5 ~
oscillation7 s& T$ s! h1 T4 f5 B) m" A6 m4 k
rand-dynamic- x: d% f& r0 u; C% n0 F
]
2 s, ]4 _, p) w: |6 M/ p; K8 z3 y; D  f% j) e6 |
turtles-own[1 _. r6 N4 N' l3 X
trade-record-all
( L+ H8 y$ g0 h2 m;;a list of lists,
trade-record-one组成- f% E' e/ j9 ~& |& G: H
trade-record-one
3 [1 l& L4 m1 \. {) ^: Q0 y;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ ], L) p: `6 \4 V2 L9 q! z; T% f1 x, E+ ?
;;[
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]]. h9 b8 z  Z4 J1 v# n: Z
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]
+ {+ t7 c$ _+ j  N: o4 ncredibility-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list0 ^+ `4 _2 E7 ]
neighbor-total4 A/ N( L1 T6 @8 h  M; ?- O' K- Q8 i
;;
记录该turtle的邻居节点的数目4 J0 P; O& q3 _- A. q/ |4 Z$ l
trade-time* M& l: ?1 O3 D
;;
当前发生交易的turtle的交易时间& D: S; F* d0 ~9 u6 q6 X
appraise-give
7 b' L1 S; W- ~* t9 J;;
当前发生交易时给出的评价0 G2 J6 }1 K' R$ b$ ]1 Z3 L3 V
appraise-receive
2 Z; t5 a* a$ k! S" ~5 Y+ G;;
当前发生交易时收到的评价
, c( Y; `/ c2 i7 G/ H1 J1 P4 Qappraise-time
3 |, D/ M; E; h;;
当前发生交易时的评价时间! a- G6 [7 k8 r2 ~: b- A7 v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 a& d7 V) \1 J) Z" O' o/ Htrade-times-total: \1 y  Z$ X, W6 q/ p4 `
;;
与当前turtle的交易总次数
  \. D+ T: p; Ltrade-money-total
; s5 b* z1 P! B. C* Y3 L: z;;
与当前turtle的交易总金额5 l4 x8 N. K! W4 x8 L8 H, ]
local-reputation
" S/ u+ B( V( W; `* j+ L* X) S8 |+ dglobal-reputation
: [/ F. M9 H/ S* Ncredibility
- x' G, d1 @' O3 T( N6 m; `;;
评价可信度,每次交易后都需要更新1 w! |/ J  m9 e' D- Q& k# J6 U, a) m
credibility-all  \4 `. Y( v- V' b! l
;;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
  y5 |+ Z3 r2 ~; z+ {7 a
: l- n4 [. W6 O: D% u  Q, H$ 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
$ {; C9 I; i2 g: bcredibility-one, @3 y& t  i) ?' y# C& w0 P  d
;;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
4 |$ i7 k, z+ Y$ Tglobal-proportion
% ?, X/ g9 g/ m4 qcustomer* t! e" q/ q7 \) U# |: a! h
customer-no
- R$ \7 e, R: ]+ L) @, @trust-ok
( Q0 R. s, g+ e* xtrade-record-one-len;;trade-record-one的长度
! v! {7 j% ^' R7 N9 M' c]- \7 V$ A" q, `# W, Y) R7 O
4 |7 I% T: C" `' T
;;setup procedure
8 Q! N/ c$ P/ u2 y9 j2 [0 K1 f; [0 K6 J9 S$ o. E* x  D2 o8 w
to setup
3 t8 {; E$ X7 y, {7 P/ w* w
! u# Q4 r% ~! C; R. O7 Jca

! J+ Z- L- [' R7 y- y0 ^7 r) M2 E6 j1 {
initialize-settings

/ Z8 K) t1 H: G* B3 r/ |+ P
3 Z0 k( A, J8 r0 B$ r; h6 b" i; ]crt people [setup-turtles]
. V0 y7 z! O: n9 i9 s7 i
$ k2 Y% e) p1 r
reset-timer
9 _, B' i8 G; U5 `. O- T% B
( g5 o" _; K* q# A- Q( g2 C8 H2 B- U9 O
poll-class
4 F, D5 W* V, v+ R) Q0 A

6 O5 }3 d# E4 f% G9 ssetup-plots

$ {" q! d% X  k% `
, R8 e6 C  P8 o" ^9 ?" h8 Ndo-plots
/ Q3 R  T! y# t
end/ N$ B- d' f$ W7 z
) Z$ w! v( V: _7 L/ C7 ~
to initialize-settings5 X; B4 p( ^7 E7 _; n/ r
5 `5 _  P% C8 y* }- S( j
set global-reputation-list []
/ }3 i4 ^7 G) z2 V/ X# M) x
3 s- u& R  B1 m; B3 K
set credibility-list n-values people [0.5]
" V8 H4 Z+ D, \) |0 O$ S+ W, Y6 x

5 {( `# Y2 \6 t, Y& P! Jset honest-service 0

, u2 W- R: a% @& [, u5 o7 `) E  |% l, l& r+ z+ J
set unhonest-service 0

4 s! f. O$ w3 \, Y' g1 |. m9 e# K& Z2 c- E% H5 ]
set oscillation 0

; N& u: k/ w. M( E# @$ ~: f- Z
5 I5 M7 k" ]; W: m/ W4 z" P# S. Mset rand-dynamic 0

8 I% M& z  F' {/ C3 F7 Fend' y$ E# a& x/ z  q) r
! R' I% o( v1 g) f, x4 {" j5 Z( N
to setup-turtles + \$ [) |+ A1 B" q; t8 e% c2 n' p
set shape "person"
' G9 i0 A, Y6 U5 r. zsetxy random-xcor random-ycor
2 C& X) ?$ D9 o4 c- V8 b3 Iset trade-record-one []3 S) F0 {, j2 N, [1 @! ^

( z4 p) ~, a" M6 i( q  Gset trade-record-all n-values people [(list (? + 1) 0 0)]
2 V' r/ Q) f# s! @# b- t" U
/ Y3 X& `  T; y  _7 U) \
set trade-record-current []
3 }5 \- r* A5 g: aset credibility-receive []
( j6 \4 U1 u. E1 Oset local-reputation 0.5
; W7 M; ^' @( `8 o* H. d+ @set neighbor-total 0
2 b# f7 N1 ]9 _5 F8 ~set trade-times-total 0
: j5 v0 K( U6 ?7 S; X0 ]set trade-money-total 03 B3 F$ G9 p* i7 p+ X0 l1 V
set customer nobody+ ^# a2 b# v9 S+ R( U
set credibility-all n-values people [creat-credibility]
8 p' N; h1 ?: E0 ?7 qset credibility n-values people [-1]/ _8 O; p( _& t: r/ h4 u) {4 i, h& e
get-color
1 H, s8 y+ Y! G( m, {
: G7 z) f/ n: Z
end; L+ @+ X. t8 _
; Q2 j: i# ^- U' a7 O
to-report creat-credibility
) U8 G5 r) c$ Vreport n-values people [0.5]3 T' H$ ~. p0 r( o7 Z- g" K9 V
end
) k4 Z: t* O0 ~  f/ I# q6 P! k" M4 y7 e
to setup-plots
; T8 a$ Y$ T, x7 c7 M6 a, `3 u) a8 q
set xmax 30

6 f2 {  G) g0 t2 X
% \1 `% G" ]4 h# ]2 l1 C% lset ymax 1.0
7 f* H8 ], w: M. m8 W9 v

$ S/ c$ v; `9 f* `clear-all-plots

2 S8 h2 ]2 S. W! z% H7 Z0 b" F% w7 W2 v* z1 }- b7 @
setup-plot1
" g9 B( M( P% S0 P
/ z5 P; k8 d6 e$ z
setup-plot2
7 u4 k7 S" p. L6 [5 |2 B2 O

9 X2 t: f  E0 ~/ i" j! ysetup-plot3
$ J4 N/ D8 I! X( z  r3 @3 _
end  g+ [; _" m+ F5 a  N3 N# h
7 f. _7 D4 U$ q' n# S/ P
;;run time procedures
' e3 l4 T  y- \4 v
7 O9 l7 Q; V, J* t2 q/ B, }to go, E; W2 Y; R! W* ^1 M

! k* I  G4 H+ B7 t% O9 zask turtles [do-business]

2 h2 Y5 ]% v  h; j: f  H6 b7 Eend
/ v9 D+ _1 p5 y- r9 s) [9 K# p: u$ D/ g  S3 A
to do-business . r4 P3 }9 K& e7 b7 P! G+ u
; X* q* N7 \6 @+ x$ z+ w1 Q) U9 F

3 i6 V! K4 H7 C# h- N- j- q) x4 Drt random 360
1 m( i1 E1 ]9 p$ b. F

6 L: c: m& _( Q: yfd 1

7 [+ H0 X! x. O( `" G
& k6 S* p, g6 d# G+ difelse(other turtles-here != nobody)[

5 D- L6 B$ `, l2 J  G# b8 a1 ^# J! @9 Z1 y& A
set customer one-of other turtles-here

! w9 i, Y4 ?  {1 u; H! c4 m! {& Q: J0 r# g2 _! K2 P) S) b
;; set [customer] of customer myself
) ]+ f! L  M4 h1 T3 {+ ]
5 L4 {. }1 F, L. v# g
set [trade-record-one] of self item (([who] of customer) - 1)0 V5 x; ~" Z# i4 o; }! }
[trade-record-all]of self* z! F6 |0 t- x  I2 ~) Z; X6 ^+ L
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; {. \# Y/ {1 U" {8 ^6 }2 _

1 V5 T) q; I4 C1 o9 W' \set [trade-record-one] of customer item (([who] of self) - 1)
( z. r* M4 O( r& ]7 U& X# V6 a; k" |[trade-record-all]of customer

: B5 ?9 o9 l& W$ p  e7 R9 M6 s+ h* P  A7 T
set [trade-record-one-len] of self length [trade-record-one] of self
6 c8 i) e1 K9 F' Y0 d0 J
  v% u/ P! ~3 B2 @0 \
set trade-record-current( list (timer) (random money-upper-limit))

  u% e: G' Q; M( {$ i8 F8 h, Y
6 S7 t/ ^# e- ^( M- Wask self [do-trust]
6 v$ b7 H6 A) j; E$ n7 c;;
先求ij的信任度
$ Q  ?2 R! p$ _! _3 O! V# D& T. e
if ([trust-ok] of self)
9 l3 r/ g& X3 ]) V4 {+ K2 p;;
根据ij的信任度来决定是否与j进行交易[
( x+ H$ y  [( U( L1 \5 Y  ~3 bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  F% P8 E1 i- H# z1 _+ I
% M& T4 g. a' K# B. a3 c4 Q[

, b, B3 T0 V0 @( e" L2 k% R) X9 S0 |. }: n- z
do-trade
& A7 f7 b5 _# w4 z

1 U7 i+ B( I! Q2 H5 b7 aupdate-credibility-ijl

& R* k( l, L" T* }' s3 G( u2 R3 L8 G% S5 f
update-credibility-list3 ^. N" \# H& b8 r' G" j) F7 \

; N- B3 k  R4 G4 g: Z% l( @0 W: H  D/ h3 `  }" a( `7 d
update-global-reputation-list

9 H4 @) P; t+ u6 f$ m; z* T2 t6 b3 B
poll-class

3 Z- d3 O! U# l, n) `
9 i; ~; I3 e. g, _, Sget-color
- n* e; C7 s/ U* }4 s5 j0 f5 N9 E

% k3 N0 Y1 R! s. p]]& \: |6 @6 a4 t8 x
- Z, W; X) R+ B3 R/ V9 z' o, e3 K6 M
;;
如果所得的信任度满足条件,则进行交易
3 i  @1 b" w* }/ O2 O% t
& I* o$ z$ p/ J8 L' P6 h[
9 @; o- X" l1 m2 R
; F- B  c7 ^6 x
rt random 360
  f, H  I, U3 t1 ~2 i

0 e- }' U) e3 K. L; ifd 1

% [" e! ^1 w* b* q/ V, |3 c7 F% K6 H/ [# r/ n
]

# K8 q' d* v* q5 ^) S8 u  _# x2 u# o* N' c. D" H; B% H5 i: b
end

( x; L7 F6 H  o/ b
9 H0 J8 m( X+ B9 ^) Eto do-trust * a) I- Y8 U# H
set trust-ok False
2 t1 R9 }$ A) ~/ e/ i4 y" m9 F# a) T. J9 m
8 D# h% E4 @9 }3 d5 @: _- o
let max-trade-times 01 W$ a8 C8 j& n3 s: [
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( G) J5 p% i% y. N( |let max-trade-money 0" P0 X, y7 i3 \, x( _" W
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: ^3 m( }' @4 c: e( ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 d# S3 A; P/ O; x) d- `
/ {, y# ^, ]! W

5 F/ ~( C3 R( m4 c( x: Vget-global-proportion
% W, J  H. |7 H9 Ulet trust-value
9 ~: P3 E8 q5 J2 I( 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)
( W9 w. d! ~2 V1 p; m7 Q0 `: |9 B
if(trust-value > trade-trust-value)
: y, f4 A) x& d! ^( m  w8 S2 K  V& s[set trust-ok true]; O) P" V3 q/ t7 E/ _
end( b" R6 c) w- \$ p$ ?# j8 o" i

9 S/ J' L- g$ M1 g/ Fto get-global-proportion, {# I  h; V5 W0 W/ w# }' X6 _3 z2 W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 e5 r* ^# f1 p0 K[set global-proportion 0]
( L2 M1 U- ^0 z, C& \( F' j[let i 0
0 y1 N% h- a  `- ~7 \let sum-money 0" m& _- K! {7 S3 }
while[ i < people]( D* ?& R$ j: N9 q
[
- C) _. Q+ C: G" r3 q( rif( length (item i
" ]+ B+ c* `' k( H1 V* P[trade-record-all] of customer) > 3 )

2 r5 d2 q  C. A  v3 Q- U* @: |% p; A[- R( t0 T3 b6 b: C1 }5 q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; R* O* j' S9 A, a. ]4 S7 {]2 }5 \# `) W: O# g, H* A
]6 p: e$ B. v- F( P# j
let j 09 m) ^! ]- ]: |3 `% \7 Q: v
let note 0
( a; @  {, \+ O/ Gwhile[ j < people]
1 B9 l  f' Q1 R2 Z[
9 {( J+ {, Q: c) E4 z7 r) Mif( length (item i
1 K8 d4 N: f& I& ?+ D) |9 [[trade-record-all] of customer) > 3 )
1 w5 F# }% r8 u$ ^4 M# C
[
4 T5 r6 N' C2 j; A  oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" b  Y- p9 l0 C  _" y7 |
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% ]# |( w) q- D4 S
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 P' O; N7 N8 m
]: f2 L! T6 u# R; B4 |$ h
]5 ]) y. x- h; m* m1 I4 S
set global-proportion note) n6 {# V1 Y9 O; @- O( G
]
$ R8 }$ }6 `( m# i9 wend% I6 h' e4 ?7 W0 I

7 K* _/ Q% V2 tto do-trade
9 u0 K1 ~7 u% N" l; n;;
这个过程实际上是给双方作出评价的过程
% Q( Z2 ~% X" f6 C, l  \# Q9 ~' m7 L2 Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 }' L- d6 v# o" }  p# H0 {/ eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 W/ O: d0 o5 Z+ P0 M5 u; |8 X
set trade-record-current lput(timer) trade-record-current. G. A7 a5 w5 @5 ~# B5 @
;;
评价时间
3 T1 C6 g. i8 N( f. d+ n9 Iask myself [- R+ s5 E* L% v" f0 i( m6 P
update-local-reputation! L/ z+ u' O2 k' l5 Q" m
set trade-record-current lput([local-reputation] of myself) trade-record-current
% ^' i9 Z: t# O; C& x]
7 m9 R% s# ^2 X9 V( d- ^; fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 E  C: \$ I8 X, y2 U;;
将此次交易的记录加入到trade-record-one4 A6 O3 @! |, I9 {' ~. }! j) M; S
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' n' p5 L0 G  S% U  r) d1 Alet note (item 2 trade-record-current )
' j; N, q. j/ }& fset trade-record-current
# a& s8 S8 B' O/ L+ K& [(replace-item 2 trade-record-current (item 3 trade-record-current))

# P4 j4 D! c  o2 n0 R4 q; W8 S6 ?( Lset trade-record-current
0 m4 ?1 V" a3 g! c5 q0 K(replace-item 3 trade-record-current note)% b, \# s/ Y& K

: q+ m+ p- A$ P2 |, u4 f" P  g
0 L) f. U5 [0 c- _5 b/ R. k( H8 a& N
ask customer [
2 E5 v8 a) Q' n; k" Kupdate-local-reputation0 V3 I6 B0 j/ w0 j1 L0 x( l
set trade-record-current
5 t! G3 c5 L7 q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 |' Q7 T$ \  x, q& n]
" n- M: f# ?" n8 Y4 Z* V" I$ W( T/ p& w$ ]! ~; ?
0 ?- F: ?1 l, X6 f- e6 }9 w2 c
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 D' l6 v; C' w, T1 ~/ X" _
0 S5 k) c$ }# _/ n9 J2 H
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 P" q' t$ F0 X1 [;;
将此次交易的记录加入到customertrade-record-all( b8 G+ U  k% }; K1 u
end
  w6 ?' B3 }6 k3 C9 t( i" x
8 @# @) t! R: f! j) zto update-local-reputation, S$ I1 y, r( S1 b6 J
set [trade-record-one-len] of myself length [trade-record-one] of myself
: g0 i8 Y5 o* V  [/ l- w8 Z! j3 J
6 ?8 w. s& N: n" U- S4 @6 Z2 b
;;if [trade-record-one-len] of myself > 3
/ N' Q+ L2 h" `: [& r
update-neighbor-total! }/ _' ]0 I1 \# S0 H
;;
更新邻居节点的数目,在此进行& k* U+ M6 {- I7 }# K6 I
let i 3
0 u2 u- `) `" b7 Llet sum-time 0
( M6 |7 g- ~1 q! G; z5 @% Ywhile[i < [trade-record-one-len] of myself]3 e5 B: t5 B# q5 G
[5 a3 h6 c# J* o5 X" `# a1 c
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) W! W8 r9 }, p8 S. ~set i
) Y: A$ Z2 Y. C+ K+ a; A( i + 1)
' ~) G3 v9 \  Y8 u) I1 x6 w
]
9 c' s  t! @' t, ylet j 3
, C1 U2 a0 t& K5 G; Blet sum-money 0
; o' R# k3 \5 t/ `while[j < [trade-record-one-len] of myself]  ^2 C0 }1 D3 G4 }
[! g  }) X: Y& R2 x* @; 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)
+ v3 Z& U4 H8 t- e4 \3 ^set j
  b8 s6 t0 ~+ A  T) ]5 y5 ]5 ?! d( j + 1)
0 T5 [; a) S; _, J/ n. s
]) f1 w" x+ z9 _+ ~1 t! W  a
let k 3! P2 F4 N* t! e; _, N; U  p
let power 0: ~1 B2 }" N6 K! P1 ~
let local 0
1 }$ C2 _+ L* o' Q$ m; |while [k <[trade-record-one-len] of myself]
$ ?; k) @1 ?9 K* V* F1 v. |8 p[
2 Y/ h) @  c8 U0 o1 w( X) B/ G* Xset 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)
- H& U: Y7 Y) T) |+ Xset k (k + 1)
- K( E- a9 J8 I/ g]
6 S4 P2 n, z1 ?& c3 z5 s( q. ^set [local-reputation] of myself (local)
, W  w% q" y% ^( J/ `  S) P0 ~- Tend" T2 j1 q$ Z+ o6 s

7 ~) Z  q1 G3 T' \; {$ ~" kto update-neighbor-total, g. n9 L$ l, j( `0 }' ^2 B

% o9 b/ U6 O2 a, Y' Y$ w5 Q; Vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 Z6 B! E% H# z1 G7 U2 G' V0 P* d
$ G( o  C+ m/ j6 G6 u
end
; w' f( J0 F5 }. e9 o
9 d, G/ j" I. ^# eto update-credibility-ijl
' y+ C. G0 r# m& I+ A9 M( H. x, B4 H3 \
;;
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。+ a( _- {: h0 h7 f8 y) [+ y# _- ~
let l 0
+ g  x4 ~7 L& ?! U. |! Rwhile[ l < people ]! T% K9 A3 i& b3 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
$ i8 {8 C$ D' U[; j1 d& A" Q. |' U. m! U" o
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( \* S2 o) s- x2 X. ]+ ?& w7 _$ p) Vif (trade-record-one-j-l-len > 3)
0 K* C/ y0 k, j0 w3 u9 C* H[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$ Z3 n) p2 O& G2 {- P0 d" S, @( Z2 [
let i 3
# J( G8 v* f/ l; H7 ^0 q7 ]& elet sum-time 0
: u# Q* H- d+ bwhile[i < trade-record-one-len]+ `: x. a) u6 H8 O
[3 {$ O3 |9 @) D! s8 |+ T
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  e  h6 [: d, q
set i
. c) r! h( Q4 Q* s9 ?$ l( i + 1)

" I  Q$ ~  N2 L$ e]5 s" D- `5 x, E
let credibility-i-j-l 0: H  Y+ f# d$ t6 K: @4 z
;;i
评价(jjl的评价)% a+ S# K$ T/ ]3 Z: Z9 Y1 K" v- e% j
let j 3
; }( x6 g8 e$ m$ u9 x8 Ulet k 4
% j" K8 K1 C, Q; w- x5 }while[j < trade-record-one-len]/ C2 @# a. }  N% }* K
[
/ F. y5 {$ ], a+ J. \0 w- Ywhile [((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# F( D6 G$ y, h. Y+ l
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)
6 B7 C5 Z2 L% R7 y3 z6 c  `9 _! {* N5 }set j/ g3 D% ]% a  M) p) i
( j + 1)
- ?( x; B/ c# X5 ]+ f' H
]
- p1 d: d' {7 L# iset [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 ))
6 D3 q+ x1 y& D* i( Y& v. [# O; Z# R+ ~/ D' \

5 T, y! p2 z6 h* Blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  @8 c2 c0 ^7 M5 [( g3 o# t
;;
及时更新il的评价质量的评价; u. h- Y5 i8 S7 {( A8 }
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( @3 t7 q) g; n2 D  x
set l (l + 1)
; f! n  w" j" `1 D5 K]( I. k8 T* i- n* y' t' Z
end- Z( X( G  w0 J" M$ Q- m/ w
+ c% `2 I+ a5 e; h9 c4 I9 |
to update-credibility-list6 R" }& Y+ [4 n% H: I& S" n6 G
let i 0
* j/ o4 a' ?) P) _while[i < people]# a8 d0 \/ @: e; t
[! G) [2 }4 G5 s, Z
let j 0" n, n2 q  z6 q3 U0 g/ Y2 \
let note 0/ ^0 x+ a  l) h0 B1 V$ i
let k 0) f4 O0 T, [; S0 D, D! W1 y* J: I
;;
计作出过评价的邻居节点的数目, \8 G9 b. q* r: N' s! B) u
while[j < people]
6 E5 ^* {4 r9 V4 A9 P[% d' d6 S) T0 z9 z
if (item j( [credibility] of turtle (i + 1)) != -1)
$ c/ v, D& q( d1 }- S& Z: p* A& d0 o1 s;;
判断是否给本turtle的评价质量做出过评价的节点$ x5 p# T# N1 R' [8 v) p
[set note (note + item j ([credibility]of turtle (i + 1))). E$ C3 P* S! V1 I
;;*(exp (-(people - 2)))/(people - 2))]

8 ]) W7 x& X) Y7 u9 zset k (k + 1)0 p$ ]  j& |  ~  d( a: U' B
]- w9 i2 y) l4 q4 Z2 y
set j (j + 1)) o( n. V/ T$ [+ J2 D4 Z! G" v* p
]
- m3 W* }3 M" [1 \set note (note *(exp (- (1 / k)))/ k)! }7 {6 o  r& `
set credibility-list (replace-item i credibility-list note): {! H# \( w' \. ~( o2 Q& D2 L3 z
set i (i + 1)) R  \4 Z0 j$ |; h
]5 T/ ?# T/ {, f' ^# O8 @4 u
end
# s# C  f% D' v& P7 s/ \& {* p, @$ m9 C: c
to update-global-reputation-list
: }0 [. ?4 _* A# v; g, V+ Xlet j 0
' E* K( ~& r; m: f( ^( I0 {; Rwhile[j < people]
9 @9 q( S  ?6 }9 t% c[
8 L  H& U& L- z) J9 }let new 0
1 J6 s/ Z! p1 W! Q. A% w. G;;
暂存新的一个全局声誉
1 T0 v' B3 K" r8 c, glet i 0! \; ?) m! q" u! V
let sum-money 0; _. r# R4 m$ o
let credibility-money 0, Q  X" }1 C0 Q% r. o3 a
while [i < people]
) S' O# V' F* ^4 A+ u( o  e+ w! W[$ i2 P9 K, t/ b  a+ a
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ _6 q( S9 ?+ d! kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 Y$ l& T) W. G. hset i (i + 1)
% V, ]: i9 z) A# j]
$ F, k6 y$ ]7 N8 G& Z% nlet k 0
2 G4 z7 h0 u1 M+ m# x/ ulet new1 0
- f! R9 T* ~0 `" [8 I1 xwhile [k < people]9 g3 l6 J& {+ {+ {# B9 @
[
4 K$ x/ v; v  ~) B$ xset 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 N- e7 ?+ }, lset k (k + 1)
  C( F8 ]5 v% E7 i" m" }) D  I]
- G  O; F, x1 x+ o6 D: v0 K8 J0 Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" z7 s0 w* n' T6 k( qset global-reputation-list (replace-item j global-reputation-list new)+ @. i- D0 j7 d3 B5 }
set j (j + 1)% Z9 K* t! y" b5 r" [9 u' v9 H6 j
]3 n& s+ l: q1 }/ o4 K' j7 x/ l2 d
end3 r' {! s% R8 X/ p
+ D# U( \9 Z$ k) ~1 \
0 ~3 d) Q; s. [4 @# f- y' T2 R

8 E5 i9 J  \2 Tto get-color
- j& u6 i) s3 U; e7 ^: |+ p; ?1 x+ ~1 b2 m1 f; V" Z. r
set color blue
% o. o. k1 q7 f5 J) k) n
end! b4 H6 v, m% Z+ Q! F* k: A
; I% y. U/ A. k  G" g  H
to poll-class
0 X& o& S1 H! P. g8 d8 iend
+ s. h$ h& D# g8 q$ @9 B4 `0 y7 d$ p1 c3 G1 Q* z% ?
to setup-plot14 N. h: @5 Y8 T; K0 Q

" x1 P3 C( J  Y% y9 T6 F% K7 Lset-current-plot "Trends-of-Local-reputation"
% d7 b. e- g( ^' }9 h

/ E" c# q; w) X6 d( U5 z: d. L8 Xset-plot-x-range 0 xmax
. E* \8 g4 {1 c2 T5 s# }$ f
$ c. X) v& }* |0 R
set-plot-y-range 0.0 ymax

! b, x- p: h5 Z4 k. }1 xend
+ X. y. \# @" k! H5 s# W: ]
( {. [' r: a) g8 p' [3 {) D9 M+ G5 rto setup-plot25 t% e) v9 Y8 V9 _* ?1 ~/ \
2 n* r+ f/ N" f# d2 ~
set-current-plot "Trends-of-global-reputation"
! Q# ?/ g6 z3 v- ^1 x- b
; ?. x7 {& H1 F; |8 G0 ^
set-plot-x-range 0 xmax
% K0 a+ g+ K4 G) W0 ^9 l

0 G) q, F9 t- W8 E) U+ Aset-plot-y-range 0.0 ymax
. Q' _8 H6 F" O/ V
end& @+ V( p4 l  o  h( k
% L/ A% ?1 X9 f/ f
to setup-plot3
! _$ n3 q; B, I' p9 y: r; g* a0 L8 p, a5 Y6 b$ J+ ~
set-current-plot "Trends-of-credibility"
) K# {% v" \4 A8 u. E! U
9 R' g$ q! K2 }( s  q. x
set-plot-x-range 0 xmax

$ D' B: g% F& S( T. d
5 @0 P/ l5 Y6 M. Y' aset-plot-y-range 0.0 ymax
. l% M" z  r, f* ]' a/ o: L
end
) o- ~8 ^' s1 Q' k+ o- j
) M! Q; `4 N7 L' ~# b. Sto do-plots4 Q: I4 `: M" u) u
set-current-plot "Trends-of-Local-reputation"* X8 Z" D& r$ T) g
set-current-plot-pen "Honest service"
4 Q' F( U" W" k' Wend
0 u. C5 E/ H, G/ R# Z
& |- B0 {) v& X- l[ 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.) ]" u  ?, d7 _
, @8 A6 [2 ?3 v' }7 s* V
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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