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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:4 c: g6 C3 U' [: e' E, ?# t; G
to do-business - Y- p& n2 i7 l7 R4 n- ~/ r
rt random 360
, X! E$ u: k$ Z$ D fd 1
4 l( }3 T! W' }, O  {+ T ifelse(other turtles-here != nobody)[5 H4 T; M: H3 _6 @' i0 v; @+ E- U
   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.
5 e! }9 j! z4 M, a2 n. O2 }8 S: E   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- u4 {( }$ {" }9 r) z) ^2 U   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. @$ r6 Y7 p/ k% {* ^; f   set [trade-record-one-len] of self length [trade-record-one] of self
5 y  J3 S4 A# U$ b, W. }. W   set trade-record-current( list (timer) (random money-upper-limit)), J- Q" h, o5 k  u, R6 A; S

: d" [  Y  K8 o6 u问题的提示如下:
3 [* w) y0 C+ f( S
2 F: ?% M7 R8 B5 N$ verror while turtle 50 running OF in procedure DO-BUSINESS
: t* J% Z$ a$ v; s! S, e  p/ C  called by procedure GO* k1 h2 y0 O2 D
OF expected input to be a turtle agentset or turtle but got NOBODY instead.8 a: A. Y+ ?  z  S: X  f# b5 U6 K7 {
(halted running of go)
" d0 W- K3 s6 w
" X( I0 Y6 T% {  S! B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~~2 ^5 V+ u3 k( V$ t" P+ ^
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
# b1 t' g( p* C  X, _; U. V9 Jglobals[
* I6 o- T7 w1 k- R2 _6 S6 R/ w3 {xmax
# i! H. l0 ^) I. X/ C9 V* C+ `1 vymax
) ]+ }; z# s! T- ]' J7 N% Vglobal-reputation-list! a8 H0 J; h0 L, Y0 R0 m
1 ~( ~( i: \2 N! Q3 e
;;
每一个turtle的全局声誉都存在此LIST
/ R% Z9 R5 y/ ?5 t& fcredibility-list( _7 l2 x# T1 }; P0 ~
;;
每一个turtle的评价可信度4 b& G7 I% M1 S
honest-service
; Q" H! P. q/ ]unhonest-service) P8 ^& Y9 a6 P7 q$ p4 F9 U" S
oscillation4 N& n  Z& G, c7 o1 E
rand-dynamic
! m% M7 w# [5 X+ M7 [$ Y]
/ J8 E7 |( a1 V$ Z) G. K& c% w% t7 c. Y1 j
turtles-own[
( J, Y' @. F4 _( f4 r" A0 D6 T: ztrade-record-all
0 V! Q  C0 }" i8 ];;a list of lists,
trade-record-one组成
' C3 O  ?; a$ H4 y! ?trade-record-one
3 b- L' ~; W) N# x6 ?6 x) i;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) I$ R/ l) I+ ~/ f2 w" w7 I( i
5 r5 ?9 n9 U1 x$ {0 `3 j: ?1 |;;[
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]]
3 N1 a. q+ J2 U$ S& ptrade-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]& b' e7 D1 c/ P. e8 }+ d4 j+ ]5 T0 G
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
# m1 b! i- f- Z! X9 p# vneighbor-total
- r3 H' y, z  Y7 W. l" }- B; {;;
记录该turtle的邻居节点的数目3 d- `: o, S. ^/ `' a# n& E
trade-time" [* N( e2 J  L4 X5 Z
;;
当前发生交易的turtle的交易时间! b2 E* M& c- V8 d
appraise-give+ m; M$ G( G( |# n1 A
;;
当前发生交易时给出的评价  r$ R3 M7 X2 t; R2 P+ Q' ^
appraise-receive; x* ]. L% u# S5 {5 p# J
;;
当前发生交易时收到的评价
1 S+ Q4 }' l) i+ \: V( ~appraise-time) s4 o# B6 z0 N+ v3 c5 i
;;
当前发生交易时的评价时间5 W7 Y; |- A5 U! e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" u0 b4 _* p, V8 x( btrade-times-total
$ P7 _* D; K4 @; V) B, B! i# U;;
与当前turtle的交易总次数& N* b# F8 I( e) i, d
trade-money-total
& v& B+ E$ o- N. {% v$ J$ S;;
与当前turtle的交易总金额
/ e2 ?1 _/ i* U0 V$ Mlocal-reputation
, i, u' R; R+ i+ w1 V6 e1 |# ?global-reputation
4 V7 `& t& z: Z0 t+ G4 n2 fcredibility/ E6 Z! a2 A" v: w- |+ @
;;
评价可信度,每次交易后都需要更新
! L2 t2 N/ x, d0 P# G( Ncredibility-all
7 J2 ]4 y; H6 N0 W& K$ d5 v;;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
4 h% |$ \4 L+ J$ w. I; R+ Q/ [, m/ S& `1 a& ]) J7 ?# q) X: 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
6 N# o3 H" L4 n0 U8 Lcredibility-one
; \4 |! p6 s7 t0 ^;;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
( C: I% K2 b3 @9 [global-proportion/ u9 F7 \0 [8 H3 H4 B) d
customer5 I5 r( j8 _: J. A/ A  {: ]- y
customer-no2 @3 p" j$ n2 R1 B* `! v% s) o, F
trust-ok
. r1 P+ e" f6 u, a, U2 mtrade-record-one-len;;trade-record-one的长度
+ M% P0 U; B7 ^  {/ y) u) Y% L]
0 H0 f/ Z, v) u$ |
+ {1 j6 E" q: O$ E( t. Z;;setup procedure8 r! }2 r: o9 \

  {" T  p5 k3 O2 U2 Z6 F7 cto setup& ~2 u. ?5 \1 f4 J0 I

8 `1 c: A) @$ p, k6 ]! @ca

0 q0 s& ~; P; t& ]  Y( H$ d
9 Z6 N. `7 M0 e1 {' Binitialize-settings

+ p& V: p2 z8 I5 ?7 I4 \1 N( n9 w. v9 a" x3 P' `0 k& z# z
crt people [setup-turtles]
1 T+ M/ u+ n- Z2 H+ D* O: x
2 b2 |. X9 r, z: }& f
reset-timer
; l+ e: {  F6 P1 N' A6 P5 d' f3 g0 p

0 T9 d& Q' y- |% H3 b' qpoll-class
- _! @' z* O; E: V& \+ S/ j
$ v- C" F9 e3 k. v
setup-plots
" X1 {, e7 }7 a8 C: T# _
" g/ ~& O1 c+ x4 V- g: e0 e
do-plots
( _0 @7 d: w4 j. O1 n& u, D
end
$ C  ?7 F; L+ D
& @0 m) ?9 w( T# Q( Y2 nto initialize-settings- n6 X- ~9 }& c0 A. Q0 J0 }

2 p2 g8 ?7 \6 G, T' {# ?set global-reputation-list []

+ R) w& ~5 C" q7 Y+ H' t7 \  }- c
9 O1 r5 j1 [3 {" Q- wset credibility-list n-values people [0.5]
8 b" I6 V7 A. q& g( h
1 V0 Y) L6 r' l5 L5 e: d; |: W
set honest-service 0

1 f, e; E7 C- F
0 T4 A  X' {9 ]+ fset unhonest-service 0
1 b; X7 ~! Q& J8 c% x

) D4 S% [$ |: w0 m* k+ n; B$ Lset oscillation 0

8 c8 D+ p3 u) x0 F8 ^3 p. G7 t) ^+ Y' c$ n( @) S' F
set rand-dynamic 0

* B4 f6 W8 R! v# |' x  Hend
5 s6 O; ]: f1 e1 e
: G$ R2 {+ W! L8 u  Y" ^to setup-turtles
$ ]' C. R; t! a' |. H/ t3 Jset shape "person"
$ x% C1 p! d. _& f  qsetxy random-xcor random-ycor* R( |) V/ W/ ^; X% T
set trade-record-one []
, [# c  d3 M7 F4 I: _/ ~
/ V* K2 |* y- O
set trade-record-all n-values people [(list (? + 1) 0 0)]
! g9 s+ O# R) z6 l. t1 e' C) ~2 F

5 T9 C/ [: I$ b3 ~3 b2 m4 Z0 Oset trade-record-current []
, L. d% \% \2 F; bset credibility-receive []
; J4 [' ^6 W$ O3 [6 C9 e4 Kset local-reputation 0.5
8 I5 G' l/ t2 ^- P( Uset neighbor-total 0! D; B+ [' v  U4 |
set trade-times-total 0
' e" ?6 i5 J! g9 d7 u' {set trade-money-total 0  z' Z, p$ H) K
set customer nobody
" U) U7 s2 W0 k) O' ^# fset credibility-all n-values people [creat-credibility]
7 l2 S! z3 r5 ]1 ?# jset credibility n-values people [-1]0 U6 p+ h0 \" Z  T
get-color
! B7 J7 C1 z  _4 B  p9 [2 b
5 w9 z" e" ?, W
end
2 z# P1 T* M( y4 A, L
; n0 J7 o7 [. s% K" I/ Wto-report creat-credibility8 E& _' D0 U% V9 q4 V9 V' u
report n-values people [0.5]' P9 x2 }/ P5 Y* Y
end8 X2 z- ^! ?1 @. B5 g. v% F/ d/ p

8 ?/ j3 r, N9 V5 R/ {( Bto setup-plots
; U7 |: M) N" C6 [" g7 m2 v1 o
4 m+ y7 d2 y7 V5 e2 {set xmax 30

  F4 ^3 E0 \) `( a& q& V% H9 |9 ?, V8 o
set ymax 1.0
. p0 s' G% u) g! `; F  \
  q5 l8 C! j% w& T
clear-all-plots
$ F+ i8 v! S  j7 \5 w

! w& G9 S8 C! N2 H& z+ J8 k; V9 Xsetup-plot1

1 v4 c8 i+ j: o* U* D' ?1 G4 X9 I- n! y, u+ t% m5 G. L
setup-plot2

$ p; O3 [: w7 t8 b) E- d) S+ w  @9 C
setup-plot3

/ }, Z8 _' Z9 y3 j, b) m$ n. Bend
- l# E1 G% n: {$ l
' d( b4 \/ O$ _! L7 f; };;run time procedures! `- n8 k, k# l4 O

, Z8 ~& W3 z. F5 F4 N1 u9 Ito go
9 G+ }# Y1 }  {' Q& S
6 P  r/ F: g; e$ }ask turtles [do-business]
8 h+ _- C# f9 Z( H7 ~! \
end
( b6 S( r% s0 w1 c4 b# @4 b& x6 b( r
to do-business $ N2 u4 z2 y$ B, m6 R
8 ]! q( E; w- e% S. `. ]4 L
) J( ~8 X& }' p9 G( D
rt random 360

' I5 r* f- O" t: D; h
- Z$ M/ q1 E6 S9 R) {' J# ^fd 1
7 _) Y3 x# N9 j+ O' `7 z
5 s& O: N4 x% N+ U) G; E( N
ifelse(other turtles-here != nobody)[

; w. o' u7 B: H% x' `6 ~9 ~' q; k5 c' \6 h" |
set customer one-of other turtles-here
; J6 |* g' r# _# F2 o8 f: w7 U  r

% A! W7 ?# n1 A# g4 D# F;; set [customer] of customer myself
  V  a. j* Z* D" a) w
* f' |6 b+ S+ k# ~- ^: v& f
set [trade-record-one] of self item (([who] of customer) - 1)3 R% `3 r$ B+ J* d% W( h! j6 E$ }1 `
[trade-record-all]of self
: z8 \& k3 x! a0 s9 ~  U;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, I) F, Q) i( E+ R6 y9 }, V3 g; Y: d0 _+ H0 U1 Z0 |
set [trade-record-one] of customer item (([who] of self) - 1)
/ l) e" p$ s, }! G[trade-record-all]of customer

3 y/ y* M: H2 r0 U# Y- o# j8 F) c* y! M
set [trade-record-one-len] of self length [trade-record-one] of self

/ G* r) k! G4 |: ?. h% w+ u) i/ \: r1 U  S# Z  G: P0 a
set trade-record-current( list (timer) (random money-upper-limit))

; D5 V; S9 k8 {! {5 L' M4 `" J4 h
6 j8 o9 \, Z' D3 _ask self [do-trust]
6 x6 N2 \& s- W. e;;
先求ij的信任度
" e8 D3 n/ Q( c' n6 P, B- X5 d  o" E* |' B  e- _( L
if ([trust-ok] of self)
' R, C: V( K  r! e8 S7 {! R;;
根据ij的信任度来决定是否与j进行交易[
5 D2 h* }6 C- v' u  Aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) P# J4 O9 C  \$ a; t% M1 D- N. H, h: X1 @6 ?
[
" W0 y, n3 E- l, [% I7 |

9 }0 x1 a2 F  {do-trade
4 H) G( K& }8 Q7 U, z& }
) M4 l% |: a# k1 l; o! K9 K1 z
update-credibility-ijl

& y/ |9 T. ]0 i' ]# U) S7 X
- V- W8 O0 R/ x5 ?update-credibility-list5 G6 |3 R" t* V, m% \/ t7 g
) O  H: q6 `2 `  H6 L2 W
1 g* C/ @8 P9 ~4 o! N$ O
update-global-reputation-list

8 _1 F- b, @! d0 B3 F# C/ _  D/ A- h# x
poll-class
0 v7 [5 \, M' _6 D; G1 }
8 O: k5 j8 q5 q4 a: j3 R
get-color
# J; k; a) Z! o% q( m% G3 h
# Q& c+ R3 A, S% {$ Q; T0 _
]]
6 X: @- r, G# t+ e7 i8 F3 ~
& s  s8 W; s  I  v: o4 S;;
如果所得的信任度满足条件,则进行交易
. `8 Z" M8 u- [  Y. H& _) T6 J
3 Z7 k5 d& A  F. q[
0 q9 [0 T" l2 y* h  v
1 e7 H8 X+ r0 W* n
rt random 360
) m; G) X. [+ T2 A$ ~+ n
6 y* A5 z! d- l8 Y
fd 1
  a; O7 l: V1 i3 n# j
5 M/ D+ B. ^4 Q2 C0 e2 _
]
- n( l+ E- _3 z4 K- T

# y- B6 y1 @; B5 s+ f: iend
9 k7 }: Y6 X% a2 e8 S# q; z6 ?

/ W% o9 K' @/ v2 E. }& p% O& _to do-trust 6 O8 u/ K8 y; z
set trust-ok False
; y/ C- k; O' S& x3 x6 R& u5 P
' c! C& e0 e- |* ~9 k+ U4 \5 a

; ]4 F1 ]- j0 M8 |0 B3 Z- dlet max-trade-times 0
. h5 _- g8 K) w* i8 `foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 @# X& O* f; }. [9 e' W( \1 llet max-trade-money 0
' O' k% t8 ^6 A  Z. jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" z7 \: b# T( D  ?* U. {( A
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 m! f0 d4 v  M/ u# J( @) p
9 e* I  m! S+ H) W) P
! M) H$ W6 `% \
get-global-proportion" M3 A5 C" J7 ?. T
let trust-value
# r+ @/ V) _% X& a! G# V* x1 Alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# ?7 [  G5 a6 Y* w/ Yif(trust-value > trade-trust-value), H, P! S  X- R- n. X; ~: {! p
[set trust-ok true]
* r; X: q: J2 d! zend. _+ \; ]2 J  `1 F: q
3 b6 ]: ]! E% V% ^, `( N2 K7 I
to get-global-proportion
7 T( u0 s7 W; r8 Q) u- tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 j  q/ f3 M- Z3 |
[set global-proportion 0]
7 Z) Z& O; I7 n  t8 O6 p9 g[let i 0: F( Z8 B3 H" T) E
let sum-money 0" w% U2 \4 Z) j4 V# r! Y
while[ i < people]1 _/ a7 q  n1 z& \3 T* b+ w5 R
[& K# q% j- n* K, c
if( length (item i: e+ d: t$ Q# p4 ?2 Y
[trade-record-all] of customer) > 3 )

* H% A6 _! h- `: @0 E/ |, I[
5 t( i4 }% _5 ~: E# O. [set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ O- S0 H* O0 w" O]: f0 v1 v/ H4 W5 }9 C4 [
]
" D, n! \, p7 u# `2 f3 c; J6 T8 r9 Olet j 0
% \. u* `& {( h. R9 c2 C3 Olet note 00 J3 H4 k  m1 S
while[ j < people]3 U( q# g) E8 M- y$ |, K
[4 X: F7 B, t/ s1 ~1 b3 p( A
if( length (item i0 W. g- s& P+ t3 P! J8 Y
[trade-record-all] of customer) > 3 )

* N: }- O% l# `8 b& t[7 U5 A! |) w2 _* b- F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ Z2 V3 j6 P* i3 M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; k9 f! k2 I, G# R$ x
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 u9 t. L3 y$ {! \  F3 l- g]
+ A& f8 O0 q% g, H]0 }/ p7 h# u2 p% E+ L; H) a7 d" ^
set global-proportion note
' Q# W4 Q- r8 M: }. \3 L]7 Q: Q9 z+ ^  B6 d5 q( |. e
end# Z( U) ?' t# U, }

- O, X' c# q- O" S/ f7 R, |to do-trade; K" Y  d6 V7 |6 ]
;;
这个过程实际上是给双方作出评价的过程1 E; [% \( T' P6 V' V; H. G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; {$ [2 i, H% @( g) R* Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ a7 b+ ^! F% {" ?' m( @" U
set trade-record-current lput(timer) trade-record-current! w" R/ ?1 {6 e; s
;;
评价时间% N* v( M  {2 G5 c  B$ z, K
ask myself [
" T: I% n% o/ p! y$ m5 g4 `update-local-reputation  i5 |* [0 v( T, T4 f. h
set trade-record-current lput([local-reputation] of myself) trade-record-current
$ w/ S/ k: p# j; _]
) g% M; V' W# \1 D+ [9 g6 Qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  @& V- E: ?% n$ g/ m% \  d. w5 f
;;
将此次交易的记录加入到trade-record-one6 Z6 y6 Z$ K; }$ j
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" X; H! Z  H- S; t3 h
let note (item 2 trade-record-current )
3 L- j1 p/ Y" p: {set trade-record-current( J2 a$ z- b( }$ h: w
(replace-item 2 trade-record-current (item 3 trade-record-current))
- a, F9 k; v$ L
set trade-record-current
5 t" [, J) o  A(replace-item 3 trade-record-current note); f. P' s; M- h: P0 S) r# G
' s+ X3 S( Q, U+ @
- |6 f+ G6 {  z! Y" p: T' U* C$ C
ask customer [
) U, K1 U% `9 s- l# e. U' u/ Nupdate-local-reputation$ E9 \1 `, X1 K& @6 w$ y+ W
set trade-record-current* B% \6 ~5 l) V# `# X2 R  e
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* b/ q, T  L' c1 C
]
% s' N8 T0 o$ P; }. I: X2 a" L: H1 z7 ?4 K) S8 o

& i* `1 A; K  Lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 U. Y& K9 J* f* ^! h$ H
2 ?2 M7 Z# ~; c, B0 ?( t. u
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 F  x; `( J2 Z9 ~- t
;;
将此次交易的记录加入到customertrade-record-all* o! A: A# c  b+ L8 N
end
! M) V: v5 O' G/ |+ h) ?+ D" V/ \/ h$ J) d  W
to update-local-reputation9 @$ [! C( {5 x
set [trade-record-one-len] of myself length [trade-record-one] of myself
0 r( w: ~0 a- g) {1 Y* ~6 [3 I  K. H, v8 X0 }
+ ]5 c% H4 [9 z( Z) m
;;if [trade-record-one-len] of myself > 3

7 c' s" e  a1 v/ @- |update-neighbor-total/ f) Z: o9 k0 v# Z# ~3 m3 H
;;
更新邻居节点的数目,在此进行
: D# L$ p+ l+ E1 W* }let i 3: g& _% U( A. N5 }# N
let sum-time 07 D8 ]5 g8 }; m% `) s  |) V
while[i < [trade-record-one-len] of myself]
1 \: q/ u& M/ Z3 c[
) f  A5 w8 @) R/ Aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( L6 C. `: E+ k' g9 p- P
set i# b' Z. |1 a% u9 {$ r- c/ r
( i + 1)
" ^# @2 j1 K; Q" O, f
]3 M. ~' _' Q6 s  b5 X
let j 3
# d" ^7 ~  a, K1 z. c% [let sum-money 0
: K/ t* K4 F2 [5 U% Z. Zwhile[j < [trade-record-one-len] of myself]; Y, [8 X3 H/ C: ~0 E+ X( n
[6 k- z0 @8 E2 W9 c4 K! e) U& e0 ]
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)" O# n6 N$ A1 F0 H& |% t' j, W6 E
set j
, B* J* E) w5 ]' j2 Z; Y( j + 1)
7 U8 P0 F+ ?2 |3 ?7 Y! v
]8 l9 Z. g1 V" o; m5 O" p- ^  J# _
let k 3( ?/ J. c6 c5 D" D0 g# O3 r0 W
let power 0
4 J3 d7 ^1 k: K! Z; Z7 Nlet local 0+ R+ d; S+ a- j9 y2 S
while [k <[trade-record-one-len] of myself]8 \) b/ f. a" M( f  X
[
, S- o. P* o& |8 r& 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)
7 }( q0 ?& I& Zset k (k + 1)8 J6 E2 R$ t! }0 e9 @
]7 H  [* T' @. C2 `
set [local-reputation] of myself (local)
/ @2 `( d% r% Z. a, ~end8 G8 b  P9 g7 f
; ?* X7 r( @! U
to update-neighbor-total
$ p; h8 `. X# y9 q/ l
7 [. H! Z- }- W5 l& Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  X6 d) M7 \/ o# |  Z2 I$ |% `( J7 \5 a/ |! N
, h% z# K) J! H( |
end
, f7 u8 C% |! a4 ?! b* t! x* c: a: D
to update-credibility-ijl
5 g! c# J' Z; m1 q! G- ^% L3 Z1 E
;;
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。
8 h- h" K) d1 w  D0 u. N5 S/ hlet l 0
. J% n6 o# D+ }while[ l < people ]2 z$ I9 o3 S. o; ]) R1 F
;;
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' w+ u; _# d0 ^" v6 p6 Z/ Z8 Y
[
' f" G* I6 r0 p" slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: T0 |) u( W' e. {9 d: Iif (trade-record-one-j-l-len > 3)
! t2 _( ]9 F6 M; I[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  ]% N2 e. J9 I& @
let i 35 J( u4 a+ k) ]2 p
let sum-time 01 `' S  b2 Y  g& @& p0 J4 M
while[i < trade-record-one-len]
* X9 M7 w  _0 k[" _! w, O- @+ F7 W
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 s; i0 o8 Y8 t% y2 r# m( lset i
* C* Q" f' P8 n0 ^( i + 1)

8 b0 f6 A) Q, x: D+ p]
1 q* B) U! i" j! j, F; Elet credibility-i-j-l 0
" m* i2 B3 g5 w* C& R$ L  e  S;;i
评价(jjl的评价)
* U2 n9 l$ v' A3 Olet j 3% K0 o8 ]; M* @; k0 x4 [6 p
let k 48 T; k8 O. @: U$ b& F7 v
while[j < trade-record-one-len]
5 Z; i1 \' M' g& V9 Y7 [' B[
. ?. s$ |* B; n3 p6 j5 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
! S$ }! a7 ?. U- `: Kset 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)
0 j  e* F* V+ T* t6 pset j
# O9 S1 D3 A* S, g( j + 1)

% }2 `9 N) @4 l+ d) a% a6 j]$ j" g- ?) [  ~6 S9 y
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 ))8 ~# I5 g( K7 }; j8 V

0 N- J+ z* k& J" B: O
3 T- w' c) q7 F! j0 p
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ q, Y6 o0 h/ j* x0 w( O
;;
及时更新il的评价质量的评价
5 r* S6 n4 E3 _/ iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ Y% O7 ]( a$ \* e' M+ O
set l (l + 1)
% e4 v+ P7 E6 S2 v: b]
  p: ~; m/ i/ k( lend# X" C+ M! x* h7 @2 R0 F0 h

( L6 i. a2 T8 B7 {0 Tto update-credibility-list- }# r& I! A3 Q$ o/ v2 C, {7 k
let i 0
- N$ y3 o. v! v# I& cwhile[i < people]6 U( _! k4 R5 s! d' `) \+ g* F0 f
[
) _# X& k" t4 hlet j 0# y. V" m8 j! l% ^3 Q
let note 03 }" t; ^3 O" X, Z
let k 0
6 p# V* |6 R9 C1 e" H;;
计作出过评价的邻居节点的数目5 d) ^4 b( A" t4 y# c
while[j < people]" G4 u8 t: q; ~8 R- H2 P' x
[5 C; ^: r) u. e5 L# U
if (item j( [credibility] of turtle (i + 1)) != -1)4 a6 m: C3 _. g
;;
判断是否给本turtle的评价质量做出过评价的节点! s6 f5 l* {. ?# v: Z* `7 C
[set note (note + item j ([credibility]of turtle (i + 1)))
5 M5 U( E# D9 b# }$ U( K8 _7 ^( D;;*(exp (-(people - 2)))/(people - 2))]
, ~8 E8 {, K# V
set k (k + 1)
# l, w7 x3 q0 j# x$ ?; d7 X1 `: W]
) m  A- C$ ]& |1 b# o; }, Jset j (j + 1)
* N9 J9 i' k7 B4 p* b4 o  `( p* t; F1 `]' G" F7 y- Y# J* L7 o) v
set note (note *(exp (- (1 / k)))/ k)$ p$ ?7 l" F( Z. A  J
set credibility-list (replace-item i credibility-list note)6 S6 B' K3 I# ?! C; P: z* m
set i (i + 1)
/ _( U% ?& I4 f]
0 t- |+ s+ |6 {2 ]/ q9 Vend
6 B+ E! M9 u' J& b
3 }9 w. _" W8 |to update-global-reputation-list( }% b1 d/ ?" F; k5 }* ~1 u
let j 0
# q; `8 ]1 b  U7 E. hwhile[j < people]
  D0 r: _' {0 S2 b1 H$ M! l[
: L+ r1 U. Y# Tlet new 0
3 w$ o- w+ j$ |4 F' C0 u;;
暂存新的一个全局声誉
4 @2 d& e9 Y0 \& s( V- alet i 0
& o8 ^# f1 d# w0 Y- Vlet sum-money 0% r5 V! T& T2 @$ }& P- p7 f% u5 [3 P
let credibility-money 0
. p$ Q" g5 N0 H0 ~6 s) Cwhile [i < people]
" h( U; X0 P; N: r- U: {) G9 X[/ V' N# z7 M. H) |% n
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ ]8 n* w3 r4 G4 R7 [0 p
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: s- q" {; p) H$ X: A$ j  Yset i (i + 1): O! U" d2 C' ]) u8 K5 v
]' }( a( C% X' v0 j
let k 0# |7 d, `0 J! _- Q* W
let new1 0
: y2 d/ _5 y9 A4 n' e% Zwhile [k < people]
% L% [8 T: Q, d5 R6 n' T0 H% Z[
8 O! ]' d8 J  w2 u! e+ Sset 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)
8 ~; p9 B6 K7 k) i9 rset k (k + 1)
# ?6 ?( K/ J& ]/ Z6 E4 y]; [6 }* ~! {& l2 y& `
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* N1 w' z+ H8 e5 v; u7 \. i7 Gset global-reputation-list (replace-item j global-reputation-list new)
9 {7 W. p3 _$ m' J" m+ O+ Z) hset j (j + 1), c) y/ r- J7 D6 N
]; R# F, G5 u" F; p4 t
end
0 u( ]1 x5 @' a; p4 r( }" y, @5 T/ g3 y7 B
( G8 K8 \9 P% F* t) F) U7 q; `
7 W4 j1 N1 y4 P5 a8 q* J( S
to get-color6 o4 q9 d% o/ w0 h% h) ~0 }# Q
9 F; m1 j' X3 Q% Y
set color blue

) {7 e9 Y  T: W3 h' X. jend$ n3 S* a1 u; _! A+ E3 ~$ Y( y
- v. Q+ k! ^" a0 I
to poll-class
% ?. `' o4 C7 h" |8 Y* @& n/ mend6 ]$ F8 n& E5 B) R' u/ J& p

) d2 Z* i6 `7 ]0 z: B( t, ito setup-plot1
/ J2 U& i2 q$ U6 M& w* x
  X/ F( B) E: z1 u1 z( A1 `8 Uset-current-plot "Trends-of-Local-reputation"

9 h# [; b7 c; p; T0 D; k+ O7 e
7 U% f3 }& j7 q* j! P  Uset-plot-x-range 0 xmax
* k8 o3 k/ Y, K* c

7 S# q& p7 e% Aset-plot-y-range 0.0 ymax
7 [5 Q# T, F; S- Z! C4 T
end
7 P2 `2 D3 i0 e8 z7 C: x6 c3 w9 \' p' y% {7 K6 q
to setup-plot2
  b' ]$ A: h0 ]3 x$ H$ n3 t4 W- u; [) I4 h( _
set-current-plot "Trends-of-global-reputation"

, Y. K8 P7 Q# |% [0 n
) ~; t- r% D+ t4 `6 l( J+ jset-plot-x-range 0 xmax
4 q% i' U* [: X% ?
& t$ q& N4 @" ?' t9 _) L' @  z
set-plot-y-range 0.0 ymax
% e( T8 Q  V$ K+ X' y5 g* `: j+ h
end/ Y- B* X* L0 k. y; n0 Z
. S5 M- Q$ p! w: E
to setup-plot3- w0 Y. i$ `1 O: n2 B
! P9 B* e  f( W# c: _( g0 d
set-current-plot "Trends-of-credibility"
/ p/ M1 V: L1 m$ I" N
# J$ C! {' t- p2 [9 P
set-plot-x-range 0 xmax

. [5 p; o* ?# D
" E: G1 g3 w$ V( L& J  o+ z; Cset-plot-y-range 0.0 ymax

8 o; E3 d" G1 ^& `# Dend* E0 |+ w# {% H; h( J% P5 }) B

0 t! D) P/ C- rto do-plots( I5 Y6 j# I- d, z
set-current-plot "Trends-of-Local-reputation"' z% g/ f  K& @
set-current-plot-pen "Honest service": j( a5 ]8 e2 {
end
1 T$ u: g( n, V
, e$ G: `, g9 U  m[ 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.
/ \1 N" P( y5 O) r" X; K8 i
$ ^, l' @. l& H/ j; C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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