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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:
! Y% `" P$ |$ f8 I2 a  N6 cto do-business + v8 u% _$ D: m3 p, W1 j: K
rt random 360
, u2 T& b, c! \# F fd 15 ~) A% c3 P4 |: Z; J8 {: B9 j
ifelse(other turtles-here != nobody)[$ Q* e+ b) e7 h7 b7 c+ l
   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 }( o6 V4 z, s+ n/ L" B( G
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * f/ g% J* }& j3 E' p* W# ]- Q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 X: c1 t" q" |- R+ r
   set [trade-record-one-len] of self length [trade-record-one] of self( g! e  u  r& v
   set trade-record-current( list (timer) (random money-upper-limit))
: B( {( F( w4 ?+ q& x4 ]. M" Y# x0 r5 h" Z  S* L
问题的提示如下:$ |9 Y4 ]9 P; l- X3 w7 k! b- K
; y; H9 B* O1 _% O! M
error while turtle 50 running OF in procedure DO-BUSINESS
, l8 S2 S$ v& u# l4 m) k  O" P  called by procedure GO
3 t6 R7 z) H, V5 U1 ?OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 |  w3 q; z- {! G& f
(halted running of go)' u# G+ M( ^/ t; B3 o

3 O: V! i4 X4 R2 n4 h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~~" D2 w1 {9 k3 W8 I+ W
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
* z; |" [1 z% x2 [1 I$ b* n3 gglobals[
" A1 ?. H9 K) bxmax4 s1 s; A" O. `. }
ymax
2 `) t1 h- Q" \( Mglobal-reputation-list$ z) G3 D) v& B  |' b

# i# W. o4 G9 z) M3 I+ h;;
每一个turtle的全局声誉都存在此LIST
8 _1 k& d+ y* z/ I' lcredibility-list7 X4 N' \" Q; X3 {
;;
每一个turtle的评价可信度8 Z. G/ z& N+ @
honest-service
$ S2 j3 W' P; u5 w5 A" Kunhonest-service
: E% J7 H1 r9 `0 [/ {oscillation
6 V# v! H# @4 }/ K; `4 X! Qrand-dynamic
) X; b. y4 S# c/ G]* _7 y- Y: s) y7 o8 `1 o

& S( V2 z' v( F, A0 N. x8 Uturtles-own[
. V; u- J# T$ g. P2 Qtrade-record-all
6 n1 O+ G* J5 X: ^8 I8 d( f;;a list of lists,
trade-record-one组成- e# q. V- o" J
trade-record-one
% T6 ^! i' Z" [) T;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) w5 P7 c# ^9 m/ C  z3 E2 {  W1 K# ~2 o$ D$ B
;;[
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]]$ i# d' A  k5 I* w
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]
$ P+ @' X4 M6 \# hcredibility-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list3 p# F! |0 E  J8 Y" B6 }+ `5 M
neighbor-total
  I- h. D4 t; b& |9 R' _" j% G9 y;;
记录该turtle的邻居节点的数目, R' i: X0 ^, h. ^& [" ~9 C/ J  W
trade-time( x2 O) x$ G! B& L; @) w
;;
当前发生交易的turtle的交易时间- r0 }" }" N6 o, H; V
appraise-give
5 z) H! F1 k* p& o' T' N;;
当前发生交易时给出的评价
) h+ a. L# A( B# I& U+ yappraise-receive
; c/ S& p( u7 \6 j;;
当前发生交易时收到的评价1 ?/ K/ F/ b: [$ j
appraise-time
$ C5 U4 h% `8 x; S* ?;;
当前发生交易时的评价时间0 ?" I' _2 g6 h6 b$ h" i/ q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: ]; x$ }4 Y' e  f) Q, dtrade-times-total
$ F5 u+ V3 ^$ J0 m* B. X9 Y$ h;;
与当前turtle的交易总次数
9 b1 W! U6 U' n! E) ktrade-money-total- I' V+ Q4 {+ o9 Q9 u1 }
;;
与当前turtle的交易总金额
' N1 a7 _& ^8 j; E% [' W4 y& klocal-reputation
. f1 H5 @* @  V& cglobal-reputation
, L: Y; L: b' S5 {) kcredibility
7 m) s$ ~. m. i7 p# l3 h' b5 ~;;
评价可信度,每次交易后都需要更新" ]# u4 s! f! y# b& L5 Y- Y
credibility-all
* o/ z& G+ K+ y* 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
$ S3 h" j! v" c9 A0 t$ M3 V7 W1 w0 C6 D% X6 M+ I2 p$ x0 x8 ^
;;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 I5 F, y5 L8 M4 I9 _. }
credibility-one
+ ~5 C: U& ~7 v;;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
# n; X; I$ p6 e* w/ Zglobal-proportion. B6 ^" }5 \: P; R' F8 O: c) E
customer) a' G1 B# X4 ]" L0 \2 D/ `+ D: v
customer-no
$ o7 _" _2 f2 y3 t+ y8 D, ^trust-ok
& y$ \4 H* F" `; Ttrade-record-one-len;;trade-record-one的长度
+ f% m' k4 ?7 q0 o  M9 Z]
; G+ t1 G9 A5 e7 M  P! {! W! g9 p( h/ g5 u6 g
;;setup procedure
( [" c, _2 f0 Z2 z9 v! g+ b1 i" w% i7 d1 G' _2 ]( {1 y
to setup
# S" r. ]5 v0 G7 l' a; E" V7 x
2 R' S) C) a: a% `/ w5 w" S3 Nca

( Q; W# A* }! _0 x( B% W6 N
" g1 B' _9 o+ ^& U, w) s" Ginitialize-settings

( N( X, l8 y0 \, }7 h. N+ w. P: S+ l! D' @4 a
crt people [setup-turtles]
) l, v1 e1 R$ y% x6 G$ ?+ s

5 i& ]  d" [; M) E. Q8 Ureset-timer
! N9 ?3 A, [) ^! u$ B9 ^1 }9 ^/ h9 t

* V* b! S4 ~7 A0 z) U: jpoll-class
. \+ L1 p& }) B$ }

4 A, V% Z/ H3 [setup-plots
% C  f' K6 ^- i3 O5 X: j& ^) M
5 w) G7 F3 f: b( j6 p" J/ |
do-plots
7 }; N! B7 ^( v' w6 P2 @
end# Y2 B$ z" H( R

1 J; e  J  X# {# x/ U( ?  uto initialize-settings$ Y( b' k: D# ~, M$ {
8 }" M/ R7 v: ?3 h6 K
set global-reputation-list []

" T+ d* p3 G9 v( q* g
! i* I$ u: S3 d+ Uset credibility-list n-values people [0.5]

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set honest-service 0
6 y6 E( p4 _) E) G8 z
7 I" K+ I+ T. E7 l: p% d" I+ o; ?
set unhonest-service 0

# z/ u/ z% @7 r8 l# F8 s
" i9 y  y+ r: J  iset oscillation 0

9 e) T6 I2 R' t, V. Y
% V4 f$ n( @- l5 C/ [4 Bset rand-dynamic 0

3 q4 r, b4 x( Y. V" nend; i. r: W* n6 M# x7 k
  `& J0 }( n( U# o& k$ N
to setup-turtles
1 w1 v# h$ |0 O( E7 \set shape "person"0 ^- ]4 ]3 ^# }. v/ T
setxy random-xcor random-ycor9 o* Q/ l9 y& w5 o! F( k& ]
set trade-record-one []) ]* y/ j$ c3 v& h
4 ?' s0 G9 G6 Z  m: {' U
set trade-record-all n-values people [(list (? + 1) 0 0)] 3 O& Z2 v9 z7 g7 B. T+ o9 Q
" ?3 j0 \  E0 O  S. Z$ v3 N3 }
set trade-record-current []
6 q+ V# o2 J- s( q: ]set credibility-receive []0 z' A, f* Q/ X/ k+ y$ _
set local-reputation 0.54 e+ L0 J- B( q% N' P$ }# y
set neighbor-total 0% t& F6 n. T( T% J: w  a
set trade-times-total 0
; l$ f* V% C" }$ jset trade-money-total 0- Y, j" @3 `6 K, R9 x5 f
set customer nobody2 j1 D7 L" g$ A
set credibility-all n-values people [creat-credibility]9 R( W, _0 G! K( m; I4 m# H
set credibility n-values people [-1]
, `+ k5 D' U4 O) K0 x+ a* U6 nget-color& Z. m0 a# k+ \$ L) l8 N) l4 {+ e

+ Z6 w# ^4 T/ R: l5 Uend$ I2 I/ u5 b( t
& h5 x5 g3 @1 q' C! i4 {9 K
to-report creat-credibility! k3 p& Z- N- {/ L
report n-values people [0.5]6 c5 M. Z7 ?9 w- q- O2 Q
end$ c. T9 B. \! n2 K

$ P# ]; _/ _. P, @- i9 s* w" e' Yto setup-plots
$ |' O% {, u6 u1 m, G" Y  [; z4 g- g& ^
set xmax 30

& |2 A7 {: A* I! ?" j2 H; n
1 l: o2 u6 ^) c" A: d, n8 d# x% qset ymax 1.0

' p: F! R% o! c, f( G/ a  E7 X6 K6 i  \
clear-all-plots

8 ]( r# n) X) C9 _2 B6 X6 @- G  c0 ~6 w: o* e9 r
setup-plot1
& L/ G, E+ q5 A: g8 s! b( A. ~

) _! c2 M( C. a) h5 Z  Jsetup-plot2

& ?, O$ H0 H( N& S' n! ?% Z6 L4 \0 }1 j1 g3 j, h7 k# o
setup-plot3

. f5 |1 x% ?: V8 w' Yend
/ m: \- y/ b+ o# X, G# m) c. f" O' d. O. |1 z. B
;;run time procedures
2 F1 j# s3 n; T1 x/ ^. Z3 W' Q  P4 R$ O
to go9 q8 R7 ?! N( N* V* O1 v5 s
' G# V# x' A+ Q4 x9 @8 y( @
ask turtles [do-business]

- J$ c" q8 ^4 G6 b: zend
5 E5 q' }- O: b5 i% h0 p7 `" Y" _* P1 }( P3 j+ y5 z: z
to do-business
% r( m9 x6 I. ~$ s7 H; ]

6 A7 P7 U' G3 }: Y3 [
* V# x4 U7 y8 V6 O( I1 Jrt random 360
2 ?. m/ a$ Q6 S1 l
/ ]" G  Z& j# m/ P& |& ]
fd 1
  @, _- g  d  l& |- H
7 M2 `% v4 a. f8 K: }
ifelse(other turtles-here != nobody)[
  Z+ U4 o! I* Q0 [* \; I% C
8 P1 m+ E9 Q$ R
set customer one-of other turtles-here

  z6 a/ K+ X1 N4 b  v
, s0 _. a1 F- z* b* K;; set [customer] of customer myself
1 i: `5 @) S9 _9 f( A. v
. C& S1 O! p7 T0 k3 [& w5 b
set [trade-record-one] of self item (([who] of customer) - 1)1 ?& {- @4 o4 U' n* }6 K  I
[trade-record-all]of self; C5 f# j; H* }! s
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 [+ l' u$ o0 T1 e/ g$ O+ H! l

5 U4 U4 P7 }6 `/ S: o) h/ X8 A. lset [trade-record-one] of customer item (([who] of self) - 1)
/ ]# f- U: P$ g: Q" \5 u; {[trade-record-all]of customer

9 ?$ G% r( u6 t1 i) i; R9 _
& Q: B! T. X( P+ m- {set [trade-record-one-len] of self length [trade-record-one] of self
" S' R6 @! N, n2 A4 f' Y

* Y& d/ D9 i2 ?' v! ?" Q0 b. `3 aset trade-record-current( list (timer) (random money-upper-limit))

" F2 N$ @0 L! O8 w8 j5 E) M
. F; V! X3 `" n( B$ uask self [do-trust]
# [1 g0 }; u' x' q) J! F+ q; l;;
先求ij的信任度
. z  I: e  r: l: @, G1 Z" J& r
' {. V9 \5 m, R, l0 S# ^if ([trust-ok] of self)
! x1 Q$ j/ v6 v' q+ J2 M- J7 I# r, ~8 h;;
根据ij的信任度来决定是否与j进行交易[( f: c3 k$ w% x$ `7 C5 D
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 G- O( m+ L: q3 x/ h. u% ?; G! f* R' x( E+ e5 o
[
/ q1 B5 F% Y' j4 S) q

9 q# x. v5 f4 _+ y. T$ ddo-trade

- M0 e4 ]* f* f: o5 x/ s4 c
* H! d8 z3 n, t( I$ L5 ^update-credibility-ijl

* i# t, J, \2 m  G7 b, e' j6 V" g
* k' t. |; Y, [# l- Hupdate-credibility-list
* C9 x3 @2 D8 J
/ N4 C) P& D! g2 Y3 }

! @! y7 o- j5 F* p; ^update-global-reputation-list
( o9 [$ f, f- b6 M6 n- D3 S

) b# V- Z2 c. Wpoll-class

2 D6 r9 ~* h% y0 k- d9 [- L- w4 F- p/ S$ z- o' m
get-color
" X) {1 z: G9 m, C
3 Y) u: U9 B2 h4 l" |; i% b
]]$ G9 |- X( A# V% r
; M* S8 W( X/ I8 [. Y3 a
;;
如果所得的信任度满足条件,则进行交易2 C* u" F% H, A; @0 J  _0 ~
3 |) n0 v  m% b5 U
[

- w& i0 W, {/ K4 W
( @+ F! j  i9 J0 M( {; rrt random 360

7 \& s: g7 g$ Z1 F( S; O
  ?* W1 }* L5 afd 1

% f7 Q# J+ ?4 y0 a
. ^, S% Q2 S1 p$ Z* w& Q# p, b" y]
, [- n2 h0 |) H3 ?7 |/ ~& X
- w3 }  u, r. d0 m  f" _
end

! b/ V* n$ X/ n: l  _
! B. r) f$ ]6 Y, L1 {to do-trust
; J5 M* p7 x  K2 `: o$ cset trust-ok False
& {& z8 y+ W8 }
4 ~0 g3 G& B8 t! ^. g; q* ~9 O
5 T1 z* u& C. ^1 C) m) W
let max-trade-times 0
, q" g) m2 K- t+ A5 F0 f; Lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 b" N" t+ G4 Vlet max-trade-money 0
" J3 r5 R( `1 ]1 C+ [foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# e. l/ g2 B: V! ^let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" f: {( \( l2 J4 J: A  U0 e- s
/ ?& P  e" o2 ^' Z

4 d6 o& a. l8 d/ K8 Kget-global-proportion, H% b& s$ z" Q1 c3 {! t
let trust-value* j( P0 v" e  N
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)
$ {$ w7 i# _! R. ]4 w! N! p
if(trust-value > trade-trust-value), @9 b2 u# ^: K! k+ \+ w
[set trust-ok true]
+ C5 p- b, R2 Z4 Zend
, Y5 z8 t  F, J' D9 K( ?4 J  X; X: E- f: C0 j* r; U
to get-global-proportion! ]1 h, y" s  K9 i( R
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 y' b  ?% e6 K9 I, f$ B) L+ {[set global-proportion 0]- I  {. r7 v* C. `3 R3 U: t  S
[let i 0
/ j% H4 v5 M" {1 D$ T  Qlet sum-money 0  ?$ f9 U* F2 O  u* p+ H
while[ i < people]' j, Z0 U: R& a6 {' b
[
# v; ^. X) a+ t7 D, ?0 H) jif( length (item i- n5 X8 N( D9 ~& J4 R4 O
[trade-record-all] of customer) > 3 )
9 [0 l1 r. e4 F: V3 o
[) R0 b! n9 E% f$ ?
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 T5 t3 }% a& D6 d' a# V9 _7 K]
6 D- H: w/ O2 X]0 j- p& J$ @; S1 @6 K
let j 0- K" R: U! Q0 k  g
let note 0
1 Q; w6 t0 _( B* V7 _while[ j < people]& |: M6 v! {+ M
[* Z- L$ O+ u" P$ w
if( length (item i: }; p1 D2 a: B' `1 {) X
[trade-record-all] of customer) > 3 )

2 j6 o# R: a. U" C; B) ~[
$ g0 u/ n" }( y2 ~2 O* uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" n) [- {5 ^4 C/ |[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 p- D, r# Z, G) |6 d% U
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! k2 s/ Z" b5 X6 A8 C+ v]
% C+ H3 ?7 Y1 f! k  x- e' ^]
; A- o5 k- v/ g+ f& r- N7 ]: |0 iset global-proportion note/ x- f% A- C7 [3 g& c/ m; K
]4 k9 P! h  \& h( r
end
# s. A0 @, `0 K1 B% }0 \+ A8 \
  p) T4 s- W: g* T$ lto do-trade
' c1 y/ Q/ ^, t7 B;;
这个过程实际上是给双方作出评价的过程
. N+ v6 B/ i$ t& Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, g8 ?7 J! X6 N: i, K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- W/ \; H* d& L; S6 eset trade-record-current lput(timer) trade-record-current' U, I! N1 o- M0 |) I( s3 J: t
;;
评价时间
/ X! [$ M" Y( U  Nask myself [. @" @' Z" d, o# N
update-local-reputation
3 C- _6 e" T: ]$ J* S4 l$ Z# cset trade-record-current lput([local-reputation] of myself) trade-record-current
6 C1 A$ g% p; `+ P! c$ L/ |]+ n6 `6 I4 o% n6 _" M0 {, X
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
& {; h  j3 H8 `6 y3 S( _5 r. c) U;;
将此次交易的记录加入到trade-record-one
( S$ p, t) l9 b3 P" |2 Eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). A% u8 M  z6 i- E3 ?+ N
let note (item 2 trade-record-current )" m+ d; l( a: b1 O' q6 p
set trade-record-current" ~, [6 `' u0 }- R* ?2 A
(replace-item 2 trade-record-current (item 3 trade-record-current))
) a1 f' l4 g' u
set trade-record-current- w5 Q6 a: Z% K! T8 ^* w% ^" c1 C
(replace-item 3 trade-record-current note)
3 L: s4 s% g2 j3 V! P: F# e3 }5 c& s9 s1 u3 I/ m: J
+ H8 K9 g5 Q, l' M  W6 ^8 a) ~  t
ask customer [
4 D# N9 Z2 a  [6 Kupdate-local-reputation
  O% f1 N, v( M0 B: z* Z0 zset trade-record-current
1 q# Z. A1 F  ^2 ^(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( N( R" L8 r. W]
9 u8 o4 S' c+ E) \
5 _3 u- W8 J, k; i

% Q3 U! x( n3 x7 H3 H+ p% Tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ _" Z8 H9 l" ~1 e5 k" z( Z
8 a' b; f+ R( Q. M% T
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 F# a6 Q  Z/ u, @/ s
;;
将此次交易的记录加入到customertrade-record-all- h3 S6 S/ v! Y6 X) q' U6 d" k& F
end
- s1 L, x5 ~/ O6 ?( ]% g7 I  a) B) u7 w. _+ ]) B
to update-local-reputation+ j( j" d( Z& T6 B& V6 j
set [trade-record-one-len] of myself length [trade-record-one] of myself- a6 |4 K2 P6 R' Q2 o
1 K+ J/ {0 u" X
  b* o$ J% h/ r$ q' y; K4 T
;;if [trade-record-one-len] of myself > 3

) D& G; Y6 m+ [9 P- E/ qupdate-neighbor-total& W6 j/ w2 i2 Y7 N; t) E
;;
更新邻居节点的数目,在此进行* y7 L, S: l' z0 C
let i 3
1 Z8 s' j6 q& a+ b/ o5 r$ plet sum-time 01 t( o# k9 ?% Q% H& p( w/ d
while[i < [trade-record-one-len] of myself]( }2 s. Q4 p& A( w) J
[
8 J) h6 ?' t* D; v' ]% |5 y! qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). g/ V. Z, D9 q9 m' G
set i
$ `# B6 w& C+ ?$ z. i) s( i + 1)

) M8 K3 H- t3 U2 `$ ~% a; u]
1 y+ ~2 d  A; l2 Alet j 30 \/ z# h3 X, W8 y, `
let sum-money 0: x- [$ e* I' h
while[j < [trade-record-one-len] of myself]' r! q" u6 [4 t/ n1 Z
[% E) s9 R# Y! I, ?) B( `, o  E
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)2 @6 m9 c7 ]* ^' A* }  b+ O
set j
$ ]" F7 f# r4 C- h4 E% C( j + 1)

2 {* g) s6 z# i( Y& I]/ E# h/ E% b* s+ Z) j6 }
let k 3+ o0 d9 l" z% I/ i; R
let power 05 j' b/ }0 a  z: h" H
let local 0! v3 M1 |2 P! h# M. S
while [k <[trade-record-one-len] of myself]+ i8 w; j/ U8 F1 |
[
! z) m' O# O4 a& G  Yset 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) - T2 \: {" C& D6 d
set k (k + 1)
( ?$ K4 T1 T' }; a. a% p+ z: v! X]
7 J: c8 D3 r$ Q& T9 |set [local-reputation] of myself (local)
) k/ O1 P+ n" s3 h2 gend6 Z! ?8 b7 m7 |/ v) ]; ~6 ^2 \

1 G1 s& T, L8 W" v6 y. C- }- Yto update-neighbor-total
* {& b+ a  J% R) i( M
5 F* I3 R. t* v0 p7 Mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' R( c0 A) I  V& v5 K/ G% K$ m$ Z* n
) b) J: p1 c* e8 m* j
; ]7 ]7 f( g- v- c
end
) C' z1 U+ J7 R( i) l! Y) l# t- \: o) f: r, W; \) l$ k
to update-credibility-ijl
: A" F2 P7 y+ A, h' J- O8 j
! U1 A% Z) c8 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 \: `2 h( Q4 Q$ dlet l 0
6 H/ W3 R* j7 xwhile[ l < people ]
: ]; J( u4 ?  g" }2 G8 H;;
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& n% _. K" ~6 N) z0 R
[
, ?0 h+ `  v5 M' |# ^  u3 `let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# Z. ]* B  c1 V% F6 Gif (trade-record-one-j-l-len > 3)
! \* y  {4 o; D, {4 a+ Q! X+ c2 S6 l0 o[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/ g7 h3 `3 w" t% Z
let i 3
6 u3 _2 F. B$ W- glet sum-time 0- B1 D4 u( ]9 C" Q
while[i < trade-record-one-len]1 S( d/ j) u7 ?. T0 L/ l
[
" r2 h; k$ r) o' N0 N; r1 `! Tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! ?, S8 \; o! `/ {set i
  R* j+ A( U4 {8 Y, Z7 I+ D% v' V( i + 1)

! Z3 }/ ?1 x+ D9 s]0 e) F% s; r# H5 X
let credibility-i-j-l 0
2 y6 P: l! D8 _. ]1 Y4 m6 q;;i
评价(jjl的评价)$ U& W( q) ?6 i5 y1 P( M4 z
let j 3
) }' H6 f3 ^7 t% xlet k 4, N) J/ p* W& n/ t+ {& W; u& w9 B
while[j < trade-record-one-len]! _* C5 M& M8 Z& _
[
6 q+ ~  I3 q1 _- awhile [((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
* c! l" R8 y* Q% @, w( p( y, Bset 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)$ L' k- i& n9 O# y
set j
6 p0 ]6 B& W9 O6 N( j + 1)
, K# m+ [+ C  B+ j' j
]
: V  S2 P3 O1 K- |& g+ r7 Bset [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 ))
5 T  W. s/ D! A5 ~( _
$ f+ D! c1 @0 m* K
7 q! f2 I0 }! y* s9 n0 E& y" f
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 H7 j% F9 t0 @
;;
及时更新il的评价质量的评价: d1 }; y8 ^1 d+ G
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 a% Q  d! t( C2 G9 H3 C& M
set l (l + 1)  x- A& p0 m+ x- t" M
]
  z% F" F3 c$ N9 w- gend
: A2 ?  o# b& p6 Z: I0 M! x* H% n0 @; [; L" j
to update-credibility-list, ]0 ^0 N2 G8 L' S5 o
let i 0
( F8 c! c0 s% w" Q! wwhile[i < people]3 X# n) B8 N5 @0 D6 V
[
0 |5 b3 `' [  q  k* dlet j 01 m1 w% s0 x* y' m# V
let note 0: k0 i8 u  u$ [0 C- d
let k 0, y, C% q* D; Q# E
;;
计作出过评价的邻居节点的数目: h. N4 ?; B) I) o
while[j < people]. Y' |' B; p- W# B3 j2 o
[! q4 f% ~2 t+ l% _9 b, C
if (item j( [credibility] of turtle (i + 1)) != -1)+ s  s! O) N  n7 Y1 @* W
;;
判断是否给本turtle的评价质量做出过评价的节点
3 C( B2 E! }. }[set note (note + item j ([credibility]of turtle (i + 1)))# N5 h0 x4 y3 ~3 x# z
;;*(exp (-(people - 2)))/(people - 2))]

( P0 V3 v4 b( X+ ^4 R+ tset k (k + 1)4 x$ V+ P. ~. p, i8 j: L" w
]* N. \' T  G! z
set j (j + 1)
& }8 g* X4 }; @) S# B]. \+ i; P8 n: M. s0 q4 i5 k6 {' s1 s
set note (note *(exp (- (1 / k)))/ k)( q7 \  \' x; Y9 V5 A
set credibility-list (replace-item i credibility-list note)
! F& m9 V& n8 }8 q) I5 Pset i (i + 1)
; |: L* ^  K3 L]
" W8 S8 c0 l: r" A: T" F" nend
/ l7 B$ |/ |& ^* [
7 A' l  ^9 ^7 J1 f! l" Tto update-global-reputation-list' V9 m0 j( b0 y: w/ \) D
let j 0& I1 o3 \  b$ `( @
while[j < people]
$ x  T% T9 F5 w  ?" M[/ {4 s9 s% B7 c- |9 t
let new 0
( U, w4 l+ \% y3 B, G5 e5 l;;
暂存新的一个全局声誉7 f/ q7 G8 A& D/ G$ F; D% d+ E& m
let i 0
% R1 _0 a, [3 u6 ^$ P0 t' |. blet sum-money 00 I: }; {3 T/ {* Z7 h+ ]
let credibility-money 0
$ z* b4 b4 X% }- o* d% B1 lwhile [i < people], V2 C# B8 g+ C/ q9 |: a% e
[( ]( g' ]& i. a2 a, Z% E) k2 j
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 n+ I: S# F% F9 {set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))3 m' s1 o2 B' R: [; H, ?
set i (i + 1)2 D3 q4 M& n: W; L
]% L  n0 q" `  u+ N0 l
let k 0  N' k* S# p' p; W  @! `+ U0 w5 t
let new1 0# ?0 U- S/ f" s8 W5 M
while [k < people]3 M$ B+ L! W( t$ E, X0 T+ t
[$ l  m# O& L. H! T7 M  H. X% S  H
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)+ x2 d- q* G7 G6 u$ Q# A
set k (k + 1)5 Q2 X! F, R0 ~5 ^1 i3 N
]' p2 Z5 y6 g: t/ O) ]% z- y  d
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + [3 `3 l$ d, I+ @. p9 G- S1 z
set global-reputation-list (replace-item j global-reputation-list new)$ \+ |4 C) h' i# I8 T$ }
set j (j + 1)
" ^1 [: s6 y% z. Y/ m! W]% {  X8 [* Y6 |
end( Z) X9 t7 B' @/ O/ f* l
! g; o& z+ J& I3 F* k

, s9 j% B/ z* h! z$ |5 X9 A3 S
to get-color& w; U+ K8 b" D

+ L" g& u0 D, U. Q6 r* Zset color blue
5 l; i+ A$ X5 q2 }
end
. f9 F1 p: {& ?" s0 n, v$ f, R% F% V: L) @5 I2 L
to poll-class
8 l; \" ]( v* o0 U$ k; R! B7 bend9 m$ M+ Q# k& L: @
, b  Z! O$ b2 |4 w
to setup-plot14 |6 ?5 P$ p3 P' _- |
7 t9 A, s6 F6 a, P
set-current-plot "Trends-of-Local-reputation"
; I5 e/ i% P. k0 _: u

% F' Z- _3 v# C$ `) Dset-plot-x-range 0 xmax
2 f0 a% p- ^- h: u. b% v+ }" v! u/ p

4 _, H" n! ~$ |set-plot-y-range 0.0 ymax

* ~% H9 W) c3 `- Rend; C( y- A2 A1 s

$ }0 s; v# B% C2 z8 S/ Vto setup-plot2! `% i  [! E$ ?

* W; z: v- F9 v" ]( Tset-current-plot "Trends-of-global-reputation"
2 ]; c7 f: W; z7 w, h
8 Q5 G9 j" Z# U$ `
set-plot-x-range 0 xmax
+ B( I, V0 |4 W% ?2 w
- z' o; m+ v; @" @% B( y# h9 U: `
set-plot-y-range 0.0 ymax

# V6 I5 d, D1 U' D8 Uend
2 U* N. W$ }3 D5 ]% p( e( O" T, v. _  \% h4 k4 a0 ~- j! f7 A# Z
to setup-plot3; M0 y% b3 y- N1 ?( N7 I

; b9 I" {6 e, {1 U* Rset-current-plot "Trends-of-credibility"

9 B# \( H8 n2 g- h+ ^; H5 O0 m& h" E9 S# N* O7 N! @
set-plot-x-range 0 xmax
8 @+ B" A$ p8 E# I; l
. t0 w0 _4 Q" K. j" g' q/ G
set-plot-y-range 0.0 ymax
* D6 Y) v9 v/ J
end
1 d' _' x* S. }# _0 N$ n. F. Y3 r0 N9 T6 q; R2 _) b
to do-plots
* |  r3 |% l* e' ~: k: B' tset-current-plot "Trends-of-Local-reputation"& D6 g7 V% t3 A+ [  n
set-current-plot-pen "Honest service"3 s) z! L/ N/ g. P6 ?* m0 e
end- P1 A+ r% d' V+ b/ U

3 v9 V+ a1 Z" G% M9 }[ 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.9 W+ t3 v* w. C# M' n/ K2 f# B  @5 k
/ m8 K4 V- o# _' T  D+ e
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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