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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
7 _' J$ i# i  F) e0 Zto do-business 2 c7 X0 s7 N4 [' J7 Q
rt random 360. e' b; g) e; m( Y7 k) c* j( @
fd 1
4 \% P8 |( ^6 u ifelse(other turtles-here != nobody)[
+ j* V# J* m' @8 \+ e5 r+ J   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.6 D9 |- ?' x. z, ~! Q. \
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ j/ r- v/ t$ C, r! B   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, D0 n0 K3 r6 S- M0 G) r. j1 ~) e   set [trade-record-one-len] of self length [trade-record-one] of self
5 C  q8 U2 m5 A. V+ i! R) Y   set trade-record-current( list (timer) (random money-upper-limit)), a/ @/ f- t3 @- C, x6 V: o
6 T" l! R5 k9 q- Y4 I2 x
问题的提示如下:4 K6 W& W; p$ z9 ~: B9 R4 e

  v5 D7 T; c0 P# z+ M: M& xerror while turtle 50 running OF in procedure DO-BUSINESS
, x0 E* j7 f) b2 L  called by procedure GO9 Z. ?# ~3 f: f6 w% I) e
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
. E5 E$ U6 S/ w. A6 ^
(halted running of go)6 W. |: i* b+ y$ P. }6 L4 L/ ?7 a

: X3 f) D6 C$ C' D8 x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~~3 c  x5 X0 ]! O) P1 b9 l' u+ m
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
/ _/ B7 i6 b7 `, K1 {globals[9 c2 g& b) L$ v% y3 F
xmax
  D7 y0 Z6 V, H3 @3 [ymax
8 p8 j  R6 b% s5 o2 \  ~global-reputation-list
" `% {* r( |( j8 ~9 m1 t5 J( H+ _) p6 z1 Y
;;
每一个turtle的全局声誉都存在此LIST6 \8 o- ~& E- q9 j9 j$ s
credibility-list
' w# M! d2 y5 c" b: X2 Q4 L$ E1 d7 R# u' f;;
每一个turtle的评价可信度/ p9 ]; P' |" \  @- F9 w, c6 M; u* ~$ |
honest-service* `2 M: B- p3 n8 a2 C% q* n1 ]
unhonest-service+ q% E' E/ h, r& Y2 c
oscillation  d, x. V1 W! G2 g
rand-dynamic. C! N+ i  N- O3 ~% r: F" v
]# J( @0 P" L0 b7 g

& j% z& A% Z* B" Tturtles-own[
9 Q$ k1 w) {3 ttrade-record-all
, S5 ^, F2 D* M3 C9 s; D; L;;a list of lists,
trade-record-one组成
2 ^3 K8 D  `/ Rtrade-record-one
9 r4 d6 l* S" ~3 Y0 K;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
% }2 p" O$ G/ U- Y  r# N5 s. \5 p$ B& m& A. q  P
;;[
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]]
" q' f6 u  o/ T/ @! mtrade-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]
8 n( G/ m6 Z. i8 G7 zcredibility-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
6 \/ K0 I5 `0 X; S. bneighbor-total
0 D, u3 Y$ m* ~; N4 j;;
记录该turtle的邻居节点的数目, b4 o2 a0 |# r* _
trade-time( @. ?( x6 K+ S
;;
当前发生交易的turtle的交易时间
1 l: d1 ^# ]3 N+ Qappraise-give
4 T1 Q8 V, \  \+ {, @% p# K;;
当前发生交易时给出的评价
2 v& L9 X3 q) y, x9 k3 j5 f# N% tappraise-receive
, Q/ v4 H2 P% r* c$ o1 {! e4 H;;
当前发生交易时收到的评价
- L* V  C6 T4 m( }: aappraise-time3 M% N/ o1 M+ ]- H) w; Y: Y1 m4 d
;;
当前发生交易时的评价时间
4 R6 L, n/ N: n' w5 s7 ~% Qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
" U6 k8 m, |' q5 ttrade-times-total: Y6 f! k7 l" U! U( K' N/ j
;;
与当前turtle的交易总次数
( U3 P8 i. m) j  V: R& w$ ]3 [; ttrade-money-total) X& h' R/ c: Z  E# d: ^8 g, |
;;
与当前turtle的交易总金额
. e$ C- C8 ]% P: m/ I( jlocal-reputation
% o1 {8 U( `; x5 E$ ~( y$ Lglobal-reputation
9 N6 u) h1 t7 E8 a( icredibility
+ @, w* z2 L8 \: @' U' N;;
评价可信度,每次交易后都需要更新- ]' G  ^3 y( \. S& Z7 P
credibility-all
5 N4 j9 s) E5 V! D7 ~4 ~;;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  i6 U! _; D$ d  ^0 ]* I# m" q

% a8 a2 T. M- N* d# z. D+ j;;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0.57 T4 r: E) `4 L6 B; h
credibility-one
' C8 ]7 t4 G5 {2 m) ];;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* _5 f, n4 d6 j+ {- t" D
global-proportion
: f9 U$ f4 X/ s+ Vcustomer( j; d4 f5 m4 O' w
customer-no
2 ]& o7 o9 T8 W# s+ i/ Otrust-ok4 q  |% B# Z) F9 c( ]
trade-record-one-len;;trade-record-one的长度( _8 E, j# f0 ^% W& [6 Y: E
]
" F6 t0 J& G  `3 k) g1 P3 g  u2 `+ M: Z* K5 a. t3 b8 o
;;setup procedure: [' X8 l- ]1 }8 S" z* [

1 p* ?8 c3 V* }% C+ L& h1 r5 [to setup
, \' N8 a; Y* h& W9 b: p" s2 ]/ c1 v) y  P0 s/ O  z
ca

0 D- v8 W2 v) x" R& U4 i6 l# t, `2 c1 N. @
initialize-settings

  G* w3 L8 V. }. k9 a
4 x! i! N4 V5 E8 g: a9 ecrt people [setup-turtles]

* }% `) b' t. u, c( n
2 u/ d* f7 c* lreset-timer
) v$ _0 ~" k% v4 W" {- q) C9 {& ~

) U6 }* R6 R+ _9 jpoll-class

! S3 o) Z2 }; R# Y0 i3 Q
. J# i+ E  g3 a# p+ Q5 |setup-plots

* P! m. I- F+ o) w: ]( |# V# [6 D. a0 {# M" n$ }* o6 ]9 U
do-plots
+ A8 `+ Z1 q7 W/ X" m
end, R$ w' X. O& Z! A3 o

" N4 s' n7 B6 X8 c  p* R  Y" yto initialize-settings! ^! `/ K: E( T4 g( a

& ~9 r) W4 l* E  C5 Q- ~set global-reputation-list []

+ |( v5 r, Q2 ?  D. Y3 q$ F9 J
. t, f( U- a: g6 @) Y& Q! P% uset credibility-list n-values people [0.5]

1 |8 I. ?8 D7 c5 |( @1 H+ C  ?5 Z5 F) A, ]. d
set honest-service 0

6 }, u/ W* w" W7 F4 d* D* E" J+ {' P. v: g) M' h
set unhonest-service 0

7 `; K) c; K7 ^5 {
2 p4 v% t# h8 H# K6 F% q; Oset oscillation 0

1 d& I! [- p  R9 @0 H5 v/ c6 [, Z6 N
set rand-dynamic 0
1 P3 l& i* e- l
end
% u2 ^, B( a4 R& T  M
2 d. T$ @4 {) D. ]  cto setup-turtles 2 M7 P* Q, s" d, `% P6 a
set shape "person"0 ?  g/ G/ W  {& k1 o( o
setxy random-xcor random-ycor; l5 o5 I7 ]4 ~1 f+ [
set trade-record-one []
+ ~) U8 V; R7 B* }' F  n  L/ ^! c

$ O; p6 t) v$ c. p: Iset trade-record-all n-values people [(list (? + 1) 0 0)]
; y! H0 X3 r" s, x6 z# ~2 `

6 \' L. q" i# G5 _set trade-record-current []5 u# ]) T. [, R) l# P3 m
set credibility-receive []; }2 f/ s. Y  V" h
set local-reputation 0.5
4 `# Y" q9 \  s5 G1 k9 G' p5 wset neighbor-total 0. a. J8 I7 ^( f" W" T$ r
set trade-times-total 0* ^  w% f0 k3 E+ d- h7 f
set trade-money-total 05 n/ F! l0 {9 z
set customer nobody
  n; Y9 e4 ~& K: J/ k2 Lset credibility-all n-values people [creat-credibility]/ @( [; t. o3 d
set credibility n-values people [-1]
; o1 \, Z7 M  x  W' Cget-color- x+ C% h3 l' ]

. z; I8 _0 @2 w$ ?  X2 zend
6 C* Z  M3 H# A( N1 ~! o8 r7 @& _' W. o8 J3 V2 i
to-report creat-credibility
/ h% L) p$ ^9 d6 @report n-values people [0.5]8 i, ~* g* I( k1 [; m( m" w
end8 C. G! h( ^( U* U3 u
0 Y* I8 S$ G. k3 E* G) n* ~. f3 h) S
to setup-plots) _% m  [# P6 c/ E! E0 d2 K7 H* N% z

. p- G9 B0 }& \set xmax 30
9 o" m( }2 r, m- Q5 g
9 d( I4 r) ^$ v% v
set ymax 1.0
- c. w/ d& S: h  |$ J# J
4 ?" @8 s& h- D) Z/ p$ ^
clear-all-plots

% ^! k* v& O8 M$ t, H2 `
+ C7 S, h/ k3 Q: x. e" f# E1 I9 [setup-plot1
7 D! {/ d2 A" Y; Y' o
* g7 S% k( `: h5 R# ?; C- P
setup-plot2

2 M8 n( x1 C! {% ~7 L5 n
1 u9 R% p" E! K% `2 Dsetup-plot3
3 |* Z# h% @0 X; h- Z! I
end4 q1 r' M) Y3 l3 N  ]. P( X* v* H) ]2 H% i

- ~6 ]8 u1 |1 t9 E;;run time procedures3 K/ W- r. m6 ?  S: L

% ]3 }  ?% }0 b/ h* h  Zto go
' t% n! t* M. P+ r0 w+ G9 H; Z% u6 b; U1 r/ [
ask turtles [do-business]

, P- i4 F$ s- mend
) h; [0 g; M8 ^+ R5 t- B
0 X8 r# N/ G/ }/ r9 P! d# rto do-business ' M& \2 F6 B$ |4 h6 J

8 C: I5 H, F: _) K' m# |) C* m9 E- }1 f* e9 e! G
rt random 360
: t$ }) [9 A' F8 V/ y  D# @
& @* m6 W' v/ q# N0 _6 U
fd 1
1 B! f5 ]6 z; y. S6 n
- E; }) W1 @5 a8 y/ n
ifelse(other turtles-here != nobody)[
" j" T: @! ]. k- C' b$ Y' q
' ]* q& z. U! r5 K/ K: C
set customer one-of other turtles-here
- x# x0 g- R. ]
$ z6 _; v) G( s  E$ J# T) d* }! G
;; set [customer] of customer myself
: D7 X* R- K/ U$ X0 Q, g
, O* v( ?  X9 p0 u7 q
set [trade-record-one] of self item (([who] of customer) - 1)5 e7 P, @/ }, ~7 J
[trade-record-all]of self  u; m3 D: q5 |- R  m# ?9 w
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) I. `2 [2 K9 K0 C: T' {) c$ j* s7 V. R  K& ^7 J& ~: w" D
set [trade-record-one] of customer item (([who] of self) - 1)' {1 G% S& `0 @# E9 V. u" w7 I
[trade-record-all]of customer
" M4 q- k8 x3 H9 X

! {( G0 U- v& l: g# rset [trade-record-one-len] of self length [trade-record-one] of self

! f' q1 q4 h+ c1 D5 l6 o8 x5 _7 A, W% f& N
set trade-record-current( list (timer) (random money-upper-limit))
0 f$ v: X) o* l5 y( S3 r/ O7 N

  K. G7 m+ ~. `. N% y5 e6 Pask self [do-trust]
5 c7 h- T1 y8 G/ r6 v- L  U) k8 m;;
先求ij的信任度1 \0 f/ |  Y3 j$ g

# z, u2 G  ]8 Q! U, j8 ^6 wif ([trust-ok] of self)( Z; N# O9 Q" H6 E
;;
根据ij的信任度来决定是否与j进行交易[
! S/ F# s  G1 W& mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 W) O! g- g7 Z9 |9 i0 l: x/ A. `
[
3 {( N( X. l+ }8 O
6 E. ]' _: B& r$ C, h/ h# r
do-trade
, q; u5 n9 q* V: R  k9 g6 G( p* H
  |* q' r$ C: q4 A7 _3 q$ ]
update-credibility-ijl

# C$ o% `& @3 r1 i8 j* ^: r2 S! M1 {( K, n3 n
update-credibility-list% |9 q3 [# _0 s
: x0 C4 ?! X8 u% Z* k- G
9 k6 {; t8 r* g) Y! q/ k
update-global-reputation-list

, G7 w  S$ o# M) z, I) T2 n, p* h) f+ r( j; S  n3 d0 x* T
poll-class

* x4 d$ Q. L3 E1 _3 h+ H6 X% Q, a2 M* B+ |
get-color
% h$ ~( r6 t: N

# `2 i0 r& b9 n, n3 y  o]]
4 ^0 l. B8 Y; t6 U" l# w( t
, s$ m) c7 s5 n;;
如果所得的信任度满足条件,则进行交易
" j0 w3 G0 g* l2 G8 F, ^# ], M
$ x' E3 x8 k# E1 R  w) v[
1 j0 l2 u  Z2 {

& T: S  f- P$ O5 y' mrt random 360

2 t7 }  w( ?( w) `5 A/ X: Z- Q- k) b) v! K/ V4 b6 }0 H
fd 1
0 K& l6 P$ h  s4 J/ F
  u" [& _$ b* S! J4 I6 k$ Y
]
8 D% I+ s+ w4 c
& A3 q  w5 |- t/ l, C: z
end
7 C1 P7 @# l+ v7 K# C$ |- O7 B
; h: O, _. v# t& c7 G/ R
to do-trust   Z% e0 _8 w' N3 a  H4 j
set trust-ok False% `' Q' B$ J; }* c/ f4 d, U
: G. Q  o! m. y" A* @0 V5 h
0 o5 k7 ^/ }+ n! w% N9 R! d
let max-trade-times 0; F$ W  p1 O3 m$ s0 j, N* K
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 w& J+ [0 i2 ]! O- z: o$ S* Vlet max-trade-money 0; q! @: q$ j2 o2 \4 a5 A6 D
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! _+ |% ~" h6 ^# p3 B/ O6 {
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- X! d$ l( t* `1 C$ {/ J
. U3 \# }$ Q' M

! X" f4 k3 j2 R: a: Gget-global-proportion" ^& t: i2 u2 J
let trust-value7 ?' I/ ^" J1 e( k3 R& l
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)
1 s. Q5 d. V; F" z
if(trust-value > trade-trust-value)
" y2 |9 ], ~5 s' L- v2 c[set trust-ok true]
0 U# T  V$ {) B) k1 Wend
5 N( _. Z* U; [7 @8 |/ d8 T
/ T# t; W9 \% w' a. f8 }  R5 Fto get-global-proportion
7 r' g! p5 L& {ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); h' D, E7 I2 g
[set global-proportion 0]
6 ~% B& J) V4 r1 J, \. i[let i 0/ m2 s$ z8 \! B- N
let sum-money 0' v! y0 _) @. z, o0 B) t
while[ i < people]
6 k" S9 L6 x( v9 `[" z0 u* F# D* ^5 B7 `. v7 r
if( length (item i
, l  q% V  i+ T& V[trade-record-all] of customer) > 3 )
% [% _$ t- W% C8 ?! S
[) P8 h2 f+ E$ M, ]' F0 A/ k6 T
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))* X  x- o; Q8 W- p
]
8 P, {! {$ ^; A; H% g( E" }]
* S* N# u, O$ klet j 0! s3 ?/ Z4 n4 u
let note 0
! X) A$ X' M. j& Owhile[ j < people]
, P$ Z, v4 \+ {5 L' C5 q8 u[
/ d  l) r- p& J6 F" N5 nif( length (item i: [! a9 v6 }5 ]
[trade-record-all] of customer) > 3 )

1 @% g; ?* Z0 j3 l& l[' F, c! F% ]1 {' s- J; Y0 ~
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* V3 p. L5 c+ W3 S2 M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ h0 M' E+ V/ l. `2 w$ h6 `+ V[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 l" e3 A* y. m0 W& U  P
]
1 G, b4 e8 G" H' f]
' V8 \. g9 K* r$ Gset global-proportion note: h; Q; I! ~# x& i
]
9 x7 _& ^; Q" rend
2 O: l" N  E/ m2 d6 p
  Y' L9 H- {$ w+ v  t1 W. Uto do-trade
* H" Z# o4 N& C+ _;;
这个过程实际上是给双方作出评价的过程6 Y. h. V/ H- ?% [$ |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- V7 G; T2 X# J& x  I+ j  U* lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ E: \. r+ o8 ?9 ^( x, S* i1 wset trade-record-current lput(timer) trade-record-current  P& V# z. ~/ `' E
;;
评价时间2 k7 M; Q- `8 ^# u, k
ask myself [# k2 O0 t9 p4 Y5 D& T5 H6 b$ o
update-local-reputation2 C$ E% b! O+ b6 M
set trade-record-current lput([local-reputation] of myself) trade-record-current8 B/ m! v8 d7 @: V; B: Q" _
]+ e5 ]. ?: K- h; k/ l, S0 k) m# m
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# H; Z$ ]! z/ a: n/ ]7 l
;;
将此次交易的记录加入到trade-record-one8 z1 M' X* l/ Y' N. f4 {
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ \3 t3 N" R' o- ?' Q' Ylet note (item 2 trade-record-current )
- t8 J3 e9 \2 w! l" ]9 t, Y- |set trade-record-current& ]0 ~! {* T. X$ }: U5 j
(replace-item 2 trade-record-current (item 3 trade-record-current))

% ]; t( t% W0 ?; k$ k- Gset trade-record-current
; d6 H) _- j7 G( M3 J(replace-item 3 trade-record-current note)
& w, a; p( |' ^6 Y2 k% x) f- I, K8 l+ l6 `" l7 ^* y

& C+ ?5 u# T1 nask customer [
8 R3 _" ^: d8 C" g2 r4 Wupdate-local-reputation
1 p* n) v2 m5 a: C. R9 W* pset trade-record-current; F2 j- X- j  S! K9 t
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; j. O* Z. V4 b0 R/ V2 A3 t], y8 b. w0 |# T( R# G

5 Z7 W( J& S; x
  B1 O. g: q2 W( C- Q- x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) P' Z0 n% r5 [& q$ o4 L! D
& C. |! t9 M2 C8 d+ G( n/ W( }1 f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. @9 @$ y+ ^5 K8 r, M: D;;
将此次交易的记录加入到customertrade-record-all5 b% ^( w& e& A5 ?+ b' S* }9 x
end; S! S: c* L$ k; F$ |! D$ @
/ A7 u# e7 c+ h* M; m: Y# B
to update-local-reputation
- V* A% d1 `& g3 Fset [trade-record-one-len] of myself length [trade-record-one] of myself9 Y7 z; u1 U, d/ Y% K9 j* z9 V6 j
( D6 t3 Q! B- Q3 p2 b" P0 Z
8 V# c# ]' N/ m% S0 v/ t- V3 W7 h8 G
;;if [trade-record-one-len] of myself > 3
9 D, L2 ^# D. b# A: L( }( _
update-neighbor-total
! {& t0 x/ h0 U$ C) K- O+ K;;
更新邻居节点的数目,在此进行
! X. B( A: T" H# R6 N: S; M; P, Xlet i 35 @3 c, J3 {) K# d# c  u+ f
let sum-time 01 S% ^7 X! I/ _5 p' ?0 t/ g; j. M! f" J
while[i < [trade-record-one-len] of myself]: s& ^# }+ h1 |! C
[
! h/ o  t/ H% l, c/ K* i3 n/ Gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" X5 [" n- c( c+ l- Zset i
, y9 q8 R8 H+ u4 O0 o( i + 1)

8 e+ R( s' K" x% B], t0 M% D$ q+ g% O& s
let j 3" o: \& p" |: V
let sum-money 0
3 n- t/ g$ B' E8 i3 c) \while[j < [trade-record-one-len] of myself]
: D9 y6 r" r! @0 x# g[, N# u) O4 V" @- s0 c
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)
# _* N' u* w& o7 f0 W9 v/ Rset j
3 O7 O# d" ]/ K* d( j + 1)
. N- U( P+ G" f9 f
]0 @' E7 H/ h3 j
let k 3
  o) T7 R9 e5 V9 Klet power 0- \6 c5 S, J( f) W) K
let local 0
6 V5 N; E- C2 jwhile [k <[trade-record-one-len] of myself]; o3 h9 q# t: r+ E
[, `: h7 z. I  r1 {+ ?  E. p! z
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
" t3 N* T7 P6 m' R) h( Qset k (k + 1)' d( ^0 e. X/ p% F
]3 Y7 a0 Z- ], ]- k+ I
set [local-reputation] of myself (local)
+ C9 V8 E# @% J  R" Dend. I: q6 B  }% \
5 S3 F% a. ?) _
to update-neighbor-total
) f# i( O# A  w+ M  ~2 W
" [5 l0 r( ?( `' q; h8 i; m8 Fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' O4 H) w7 J. x  |5 {

; \0 H- \) Z2 n
- I( f- I- ?- |; M% j% O0 o" ]
end
9 \* ?( \. d; H6 a! w
" m6 A% G* X6 {1 F" Wto update-credibility-ijl 7 h1 K/ Y: w- |4 R

. h/ J5 r# C4 ~- {1 Q! };;
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。
3 ^( g5 G% r2 Elet l 0
& b; n4 F) F) V" W2 \. P2 \+ ?while[ l < people ]
2 f, i9 }3 Y" C' R- y5 V$ r;;
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" S* n0 s+ p6 D2 a1 X( c
[: }* ~( {; i5 L3 W' p2 n
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)! n( \8 C7 Y" {6 E4 e
if (trade-record-one-j-l-len > 3)' P/ S0 Y" ~0 a  b- G
[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-one4 Y+ F* D2 g" |8 U0 _7 R/ U' t. K' m
let i 3
" X4 y' v8 p$ o  glet sum-time 00 f! }$ V2 X/ p- \6 T" l
while[i < trade-record-one-len]
4 W4 a6 i2 `! I+ Y2 i[& k& u5 I* q( s* W* H' q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" w  k! \0 T. Q( ]1 x
set i
  i0 J5 U7 H( a& |( i + 1)

4 n& ^' o1 {+ s( Z- s]
) o7 T  y% p$ U" B0 G6 @+ Alet credibility-i-j-l 0; P, Z& ~( C9 d/ F6 e
;;i
评价(jjl的评价)7 P: E# f, S* |7 W& e. N6 `" t
let j 3
8 N; U( e, f- M0 |( k' [  llet k 4$ k" ~6 d2 |3 g3 b
while[j < trade-record-one-len]
+ l3 _, @5 D% z% Q$ E' J[( U' m1 _" ?( H- r. w; i% H8 @& d; B
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/ O# C; G( D1 n( O" q
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 j4 P7 Z1 P# Hset j
$ R( z% L5 U% Y3 v4 _+ g( j + 1)
5 u  ~+ N) {* G+ O
]* Y: i' g9 }1 _1 u2 C2 T# C9 B! \
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 D: F' D$ @$ y$ m' X8 m9 v- P4 D  C% C1 n  ?. u" w+ l* A; i( M
1 Z$ B# m9 x5 s9 K
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
1 ]: X+ x# n/ k0 N" N4 x;;
及时更新il的评价质量的评价
' Q& a% J4 i$ P4 G2 L$ cset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; ?0 ?* a- O* G$ X- F
set l (l + 1)6 a7 ~$ e8 p; K* P: w; J( s+ {
]
3 W4 ?. A- U7 H3 O. z- ^, i8 C( f- [end9 g6 u* m! _5 a& A3 X

& v2 ?- e5 u; ^2 P2 Z7 V' q8 Yto update-credibility-list
. K7 B4 M9 {4 W. e6 a8 G+ B2 A% Slet i 0
' R: q. |5 Z) @$ @while[i < people]6 n6 s, [# A5 [8 u0 J) ?
[
6 h* Q5 H- }" I9 E' w0 clet j 0
8 C1 u7 E7 A0 w; ~, T$ ?let note 0% P/ B$ \1 X% n
let k 09 _* O, g+ r5 Q" I7 k+ x" M2 c6 u9 P
;;
计作出过评价的邻居节点的数目, z( O4 b& Q& F8 ?  f5 m
while[j < people]" C# i& F  c. f7 F3 U
[
! }6 \7 Y3 t- U/ G: r! xif (item j( [credibility] of turtle (i + 1)) != -1)
. n! n4 J" R  R" h/ Y7 @;;
判断是否给本turtle的评价质量做出过评价的节点
2 l; E. I/ I% {[set note (note + item j ([credibility]of turtle (i + 1)))
, i9 w% z% l* a;;*(exp (-(people - 2)))/(people - 2))]

6 I( x7 A8 w- i( s4 K$ P  Gset k (k + 1)
/ B9 a. o6 W" B]
, l  D: B# g% ~. I: d. {8 Cset j (j + 1)! ^% Z/ X, I7 I: `0 ^* k2 B
]
# I3 G9 |0 O1 l$ h  Iset note (note *(exp (- (1 / k)))/ k)
* X: d1 F0 g+ A2 P# ^) nset credibility-list (replace-item i credibility-list note)) f' S: L$ H4 e( [8 N
set i (i + 1)
: v- D& \7 V2 y- j0 j+ f]* E/ X; C5 ~* O& p8 }9 C( |4 C
end
; k7 t9 D8 @+ _& a5 W3 x' w# R. [! X8 d6 U* n% |
to update-global-reputation-list
- l$ K" g& }; o+ l. Hlet j 0
; q# a8 t  `* C& c* [  j+ h9 @while[j < people]7 o9 T: L6 P+ H, ^! N( p  i2 B9 T
[
1 V" k  Y8 Y6 B" A, vlet new 0+ {* B5 I- i2 z- z
;;
暂存新的一个全局声誉0 z9 i; U* y; |
let i 0
0 e6 g) p" i7 C6 ?let sum-money 09 I  A/ L2 v  N/ O' E
let credibility-money 0
, d# e6 U0 H2 a% F: M( ~, Jwhile [i < people]
0 m2 [: b" f& u' [[: ]5 t* ]7 N  e: R
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& }2 j6 g$ ?4 x
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# d0 E0 |+ X& E6 Rset i (i + 1)1 n, {/ J# o6 o: I
]
4 j, Q  Z  @1 l  [: q2 R  Ilet k 0
+ M: R! V2 `" z5 v9 P2 slet new1 09 d) h- t9 d5 I) b
while [k < people]
4 @' r8 {9 n6 `* @" T% D8 D, [[. b6 h& v; p0 |; b: U$ C4 J8 V: T3 Z
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)
9 a0 c" m+ j. B8 dset k (k + 1)
# k$ F/ Y4 c4 H% K' ], S]/ E* V  I9 \, w/ D" b
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + @# L9 ]: z6 F0 G  ~8 w$ A7 u7 `
set global-reputation-list (replace-item j global-reputation-list new)
' e! c4 R- b& p# x# hset j (j + 1). G6 z4 y7 V: A
]2 z+ J! H: x# W: @8 y
end
* r2 O* e9 y5 j3 g
8 _' e* h! X5 c0 m2 B" H7 T/ D& y5 d' C4 \5 W
0 j& R/ {( C  V% A  Q% E- Y0 o
to get-color3 |$ \  ?: A* e( p+ P

& [) _! c" h, Y& x# ^. h% Sset color blue
+ z. _9 L7 ?$ O% F/ M
end0 r. U2 f% R, n& A) o. o
2 A4 n7 G6 h8 `9 `
to poll-class
& U0 x9 t  o, @end
' q% B7 {+ I5 w6 k8 M. Y: i8 Y2 W# ?# O6 o3 e' c$ s
to setup-plot1
& J3 p! ]9 `: U; I+ f
4 {5 T6 z0 L& ^5 }set-current-plot "Trends-of-Local-reputation"
; G, v/ g! C& m2 H! y
7 j1 [- H& ]3 Q% z8 p9 T7 k1 n
set-plot-x-range 0 xmax

: A$ }/ l+ l2 h( r2 ?  H9 G9 d) }3 N0 e4 E  Z
set-plot-y-range 0.0 ymax

# X, a9 R- w3 wend$ Z, {. c* m- B( @

( [- L- K; N8 n8 G7 E$ Ito setup-plot2
: u4 h4 _5 P# [' H; b! D
9 J, j" Y- Y2 B  {/ Nset-current-plot "Trends-of-global-reputation"
) B, o; M5 p" z9 @, ^
) s9 x$ A# u! E  N
set-plot-x-range 0 xmax

$ N; C% F$ ]- B$ G$ I7 M$ [7 a0 B( Q6 s* p
set-plot-y-range 0.0 ymax

0 F9 {8 j7 \& l# q5 yend* I7 \- L( ?0 x# f. |. H
0 q% @0 B* F! F" _
to setup-plot3
# j6 h& a& |, T. l! T1 e  d; f0 I6 P
set-current-plot "Trends-of-credibility"

% I, u9 m- j& [6 E  Z, l
" K$ x# L% O0 K" ?% ^) ^5 jset-plot-x-range 0 xmax

0 Y+ A4 T  e- q4 k5 g6 U3 ~3 n" }- v' g! \
set-plot-y-range 0.0 ymax

# c' |1 q) \' M1 eend& U! m2 \" X+ t* ^, r, }2 N
/ ?5 I% W$ ?6 |  b! r! I/ a" V' K
to do-plots- b( J' [4 O" F) @
set-current-plot "Trends-of-Local-reputation"7 k8 C% s& h6 Y8 h- |
set-current-plot-pen "Honest service"
" }1 b5 U) f, _" Tend
) z$ ^( e* ]- E1 O" t9 n& C) T% C+ a2 a
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.: ~2 Z# P) c6 }: b# a+ e2 V

/ m$ y/ W5 ^( ~4 K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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