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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:
' a" S5 o% c/ U' ?$ c7 Bto do-business & c* A" e0 G0 x
rt random 360
. L+ ?& L- ~* j. u9 c fd 1
/ h3 c( s2 I' g. M$ j' S5 m ifelse(other turtles-here != nobody)[
. b8 @2 J; U6 m+ Z" r  @   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.; }1 u) X) I. I1 t  V7 J' Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . m6 |+ ^7 k8 c7 e! k" A
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) w. J: v. T4 K, L
   set [trade-record-one-len] of self length [trade-record-one] of self( ]8 `8 d8 I- S, ~2 f
   set trade-record-current( list (timer) (random money-upper-limit))  C; N0 R# I# f# b
' \/ l% x2 O. m
问题的提示如下:9 z4 N& @, o7 f4 T% W* T" C. H+ y

9 g/ u  |0 X7 m  T2 m  I4 Berror while turtle 50 running OF in procedure DO-BUSINESS
5 }5 Y- u2 u: r' c5 F% y  called by procedure GO, [/ Y$ d$ \; [+ `6 u
OF expected input to be a turtle agentset or turtle but got NOBODY instead.5 i: k9 j4 {- a
(halted running of go)
- O8 v0 m5 d4 n( w7 M( N) P) i1 o& |* @
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~~% k/ \2 i  w; ?* 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
9 {- m, r# ]1 U, Aglobals[
) \9 y' b/ d3 A6 oxmax0 ?9 `9 B$ J. h
ymax9 E6 V& x) t8 [7 D6 @
global-reputation-list
% ]: X; W! ^. ~$ w' v) |1 _" k8 z. A! V& L# L( |
;;
每一个turtle的全局声誉都存在此LIST5 `0 r2 |% G- M) D! p7 E* I
credibility-list
- u$ d  E" c& ~6 l! |: a;;
每一个turtle的评价可信度# i7 A! a8 V1 @+ f6 ]8 r0 T% t3 f% F
honest-service
! y( v0 _" E- K7 I  p* I/ ^unhonest-service
2 T! ]- j2 j+ K! s' m% s" Hoscillation  I9 V8 J: x% T0 i; \+ p
rand-dynamic/ Q1 `" c9 |) y5 X' h; }% r
]# g  j" y7 r- K
7 J" y% L) X$ |( a+ {9 z1 [
turtles-own[. J  S) N' y" C* V# z8 U
trade-record-all
, h' n2 S$ C: R, K/ b5 G6 V;;a list of lists,
trade-record-one组成$ I* L1 q' i9 }# q
trade-record-one) Y( L. k, T  b" h
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 f& i, U$ N2 F! _  X- o
$ g9 f$ \1 @6 Y, j, O; _! I# W
;;[
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]]
; _0 V! p7 m* P# V6 R6 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]
6 i, q- g: N9 k- k$ I! z7 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list/ C6 B$ u/ v: j; G8 o$ X  R4 c" u/ K
neighbor-total( r* l6 o7 E/ W7 w, ~/ h
;;
记录该turtle的邻居节点的数目
  h3 Q0 @* `+ C+ r. jtrade-time" P$ [$ C2 k) A% H) h
;;
当前发生交易的turtle的交易时间+ i# H9 Z7 z; D6 s! _7 h" _
appraise-give
6 @2 H) l9 t7 O; Y;;
当前发生交易时给出的评价
, N, ]/ @( [' O+ x) |appraise-receive3 U& \# b! A% M3 z3 G
;;
当前发生交易时收到的评价9 I+ Z1 F  p% ~3 W
appraise-time! t* y& C, I9 T% N# J! u& Q" ]
;;
当前发生交易时的评价时间9 _) F% S) G& N7 e. {+ p
local-reputation-now;;此次交易后相对于对方turtle的局部声誉, I6 W' r# K( n0 H4 q, a  \
trade-times-total. @5 V: @% r8 E* |
;;
与当前turtle的交易总次数$ u; K/ R4 B' J1 A& h" G. W
trade-money-total
- W$ l! i! ]! G. G' j7 b7 r2 l, d' @. h;;
与当前turtle的交易总金额& d& N8 D2 x- {( L7 ^1 G$ C
local-reputation
3 n, D, Z, t( Q: sglobal-reputation
) x7 j9 ]- G5 ]+ {' ucredibility& n! Y: _" j5 [/ d* H# J; z
;;
评价可信度,每次交易后都需要更新2 o4 h- S0 ~* O. t. y0 M
credibility-all9 d7 ?  a* S) b; j3 m" S. ?+ o( [
;;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
9 q, U! w6 O7 [4 I: R2 c# p8 m
# y& ~- s5 x, g4 p3 L. {) i  x;;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! Z5 Z) K, n6 d
credibility-one
# M( a1 ^% N1 A4 p5 L$ [0 R  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
2 ]) h* _1 l# v" l* Yglobal-proportion
" ~- N3 _$ U7 d2 Wcustomer
. `) `9 S, A  b; Q( L1 @! n: }customer-no
# S4 Q& H1 q1 ]2 j* R! |trust-ok
/ N5 y' b2 o9 e! r8 Qtrade-record-one-len;;trade-record-one的长度+ [" ], F% G" \% \, T7 j" N* @
]0 f  b* a) [' e( x% M+ f: k. _
5 y0 _; P( T, I) U2 H3 a' ^) `* t
;;setup procedure
9 s' H1 S) R7 D4 [9 M' I/ o4 D9 S
! \0 K2 O. f# U% B9 l9 S4 Yto setup0 C0 V: ?" }8 |4 e
% q! |) c4 o+ R) D; x5 B
ca
5 I. ^7 z& n. S' H7 o0 J& O
6 v9 L/ s$ Q% k# q- w% R4 K# E
initialize-settings

' n5 f5 K5 W: G* Y3 W! _! |; r1 p3 d+ Z/ H  U5 w
crt people [setup-turtles]
! L; y& b7 G' S
) N# \& R3 X; S( O) F
reset-timer

) |! e: ?9 J* n3 w
4 k6 d+ _, G3 t2 ^# Tpoll-class
; P3 h  n0 c' ?# e& E# ~" D8 T
" m# R6 ]. ]# H7 w
setup-plots
$ T2 n4 x0 Q3 c+ \

+ H2 r: I. p7 t2 j# u1 A- {do-plots
2 \2 h9 {8 a* C$ M0 i, X4 V
end
$ K" I8 o* _: |" h" w6 N  H, @3 [
: L; e/ @% U' ]4 r, B4 ato initialize-settings
* H6 k5 ?, ?  R3 m6 g
8 v# z' Y* q2 U/ P; Hset global-reputation-list []
7 a- d& \8 n0 n6 O6 ?9 f" w

# Z$ J2 I! i; C0 Z3 Q0 Bset credibility-list n-values people [0.5]
  W8 M( W9 L% u( b" v0 p

+ Y. ?: u0 q! _- e" c) y  t5 o' wset honest-service 0
4 t3 l# @8 v8 r

) f6 K" i+ x# E. n% H- bset unhonest-service 0

* T7 u4 ?4 |- i0 {
/ Y6 n7 Z/ P! @+ k4 Yset oscillation 0
4 H+ F2 m$ r/ P9 w! J- Y' H2 D

2 n' Q, c; k5 k" C% E1 jset rand-dynamic 0

2 i# E: O$ e3 l! m" jend% _' z3 g, B, Z* B9 Q$ e

# s3 f" g/ s5 v" z! c) Y) Q8 Wto setup-turtles
: {0 u7 x* V( p/ k9 aset shape "person"
( _1 {& s$ |* @2 Esetxy random-xcor random-ycor
9 |$ I. q# v2 R1 c# r. `set trade-record-one []* I9 Z/ L" Y( ?- l
$ Z+ O5 H5 r: y$ v4 h% P- J
set trade-record-all n-values people [(list (? + 1) 0 0)]
$ L1 i% G# s- J+ l0 O; i: v! g) g
8 S2 O+ c* e* r) b% m' p2 g  B
set trade-record-current []+ i! q4 x' U& U0 o+ i9 ^" U
set credibility-receive []
9 C! {" P( w' U' Z! Iset local-reputation 0.58 \2 \: W+ O" g( R. Z1 z
set neighbor-total 0
" Y' u" X/ X" \2 ], Mset trade-times-total 05 \4 i0 v6 ?! `% \
set trade-money-total 0
& G# z' i' V; N; e" C5 ~3 gset customer nobody
0 e( }+ I$ G- b2 d: Mset credibility-all n-values people [creat-credibility]$ `1 Z& @5 r* [4 R9 x! a/ }- n
set credibility n-values people [-1]& e  K! B" O  ~$ E9 y1 b( k
get-color6 z" s- w6 ~) d! c* t

/ T8 L5 G2 u# lend6 F+ v% Z& m& E8 k- K& W

3 `& F( g5 Y1 w% _4 U; Kto-report creat-credibility
& F" {( H  X% Ureport n-values people [0.5]
8 N( g* q' k4 [/ tend6 W. A5 b+ s! f
" s+ g6 ~# ~( v) y! {2 N: t0 s
to setup-plots
7 ]$ c0 Q7 R# k7 V- O' I0 R8 B, ^; q) v' J7 [1 A+ ?! }
set xmax 30
: H  D2 M1 ]/ o3 E& S) m
5 J1 h# M7 j/ z4 ?- Y3 m" m
set ymax 1.0
8 D  ?1 K( E! Z  J" y

8 O( W! D# I5 ^5 K& \. |$ k  Qclear-all-plots

3 I2 [1 K; y! \: G6 J" _
+ ^4 Y. f3 `3 W  r" Ssetup-plot1
/ q3 ~( j  l, ~' a5 V1 p5 N0 ?( ~+ e
- Z% o- y3 {4 y6 u* i
setup-plot2

& l& t3 ?8 G# Y5 o* l* |1 k# [& k- e
setup-plot3

) p- x+ m: W+ U  pend4 N6 K2 d( H' A- A8 ~
* i2 |4 P  k1 v5 T
;;run time procedures% k4 y7 a1 A; R1 k
+ x. ?' R. n0 A0 W
to go
, r" t/ A7 v. M1 l, {- C0 ]
! z' _( }& K3 F/ C( F: v8 J, u& I4 Vask turtles [do-business]
  d2 M5 F) D3 ]( i% f2 h
end8 B( U4 H0 |) j; K# H

, \- H/ {+ L# H2 C* wto do-business
$ Z5 @& P" D$ L% Y& E2 w

3 W5 U- F' }' y* _" I2 u; q; v
: u6 s6 J* n9 h1 |* w1 _rt random 360
' r& ?0 U9 ~7 W* V' G* x

, [9 U* F% _5 Z4 ?) ?fd 1
& X3 A4 g: T& l. @5 y/ B5 f6 Q
, j( g+ D; d) l
ifelse(other turtles-here != nobody)[

3 `1 e- A% c4 F, Q6 l
, _4 G  C; e- p3 t# Jset customer one-of other turtles-here

! D- j$ ]; A- h3 J6 X' B! U; o0 u
;; set [customer] of customer myself
9 i. q/ A5 U3 p/ O9 Z  [4 C9 R

- |# [; p4 H7 B* x8 B! r# V' E( Pset [trade-record-one] of self item (([who] of customer) - 1)4 z; n4 F/ J' ^! u) p" l' W3 Z
[trade-record-all]of self  }$ \6 m# y. W  d: I8 P' Y0 m% Y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& c$ r$ h3 h/ e" i. \, d
% @9 J- R; G- J8 ~9 T4 w; L
set [trade-record-one] of customer item (([who] of self) - 1)
8 X* C+ [' f/ S+ a[trade-record-all]of customer

9 f5 Y7 @2 m3 x- D/ K  I1 U; p' _3 `( {7 A& [  v, ]
set [trade-record-one-len] of self length [trade-record-one] of self
/ ?( P( O9 j" i6 _! r9 Q' U
; V% p8 m( ]. Z+ ]5 a& \' g4 c
set trade-record-current( list (timer) (random money-upper-limit))

3 A' j5 Y6 f) i3 O* V+ j
9 `5 B# n& S& I9 task self [do-trust]% P# W. b" Q4 H! I3 q
;;
先求ij的信任度1 i* l5 I" @2 M! j

! f  |1 x& V; ~0 r7 f9 d3 @if ([trust-ok] of self)
1 |, t" d0 |- q1 y" g;;
根据ij的信任度来决定是否与j进行交易[
( H2 S: c7 n4 G+ Oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 }; o+ g7 \6 o& J* W9 F4 E6 I" |
4 Q+ P* M/ ]' s# K8 U, H& g[
7 O' X7 W/ ?/ x) p

2 l. s' J2 }6 ?  l& [2 I6 ?; Ldo-trade

1 P! l; d* c7 H6 m  j+ D' q! a7 G$ e1 l, _" F( s
update-credibility-ijl
) y  J% x$ I, L7 C& m$ e3 G
+ H. P% }  u3 ^# }
update-credibility-list; ^! m; a3 G) S  E! R

1 Q' l5 c, ]: G; g( o) s5 {, U# s5 k7 l/ P9 Z" h5 h$ e! ~
update-global-reputation-list
( ~" V% B& L. Q3 T. I) i
2 l& q; K4 K1 r2 f5 a1 o; J
poll-class
4 b( a, f+ x9 u8 x3 n' D4 D! j

: D6 `7 ?6 j+ l" @get-color

4 l# n5 Q* S5 l- E" A- W" r: D" U
4 Q; B! R% `" q- G]]' ]2 E4 v: K9 p  ?1 {" w
7 N! V* Z, M+ x& @. S4 h
;;
如果所得的信任度满足条件,则进行交易
% c% W5 O7 ?/ W+ T$ B' o+ P+ z5 Q( w7 |
[

8 [  e' S+ R, ^+ \- L+ p0 R+ ~" s. r% ^7 B! B1 P0 F
rt random 360
8 M2 W$ n! E, _  E

$ O; z+ ~0 W6 Afd 1
9 w; E' S1 Y. Z# k# l7 i9 e0 x

; O1 `; c+ V9 c/ \" E6 e]

) q. T9 X& S1 c' ~7 Q
7 j* ?$ x4 i9 E/ X- J9 Dend

& g: H: u, |7 K( O" P
  Q" {, f1 D( G& `& {to do-trust ! K2 [; |% V; |; F. |
set trust-ok False8 u7 J' d; d# D' R

2 E' r  d  ^* ?4 `! ~

6 X1 r& ?+ B& C3 w# @) b8 clet max-trade-times 08 |( G" z+ t& R/ R5 l2 N# S3 G
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, n8 l1 q$ H- L5 olet max-trade-money 0
& ]7 r& C: \6 W4 U/ M/ dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 Y) b! w/ R6 Y; c9 v8 I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# w  p6 n( Y' ?0 d5 n
5 e' x( {( d' p9 [

& y  \- l- \/ Rget-global-proportion# G) b3 U+ L2 a* S: s+ }; y
let trust-value
' V6 G6 Z% e! @4 n& N* g6 w6 Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
- `4 e% N1 H3 u/ Y! Q8 w
if(trust-value > trade-trust-value)
* e! {8 e5 J2 m8 ]  `7 P0 {  I[set trust-ok true]. o* |: z6 v- ^1 K6 Z2 c' M/ t6 Y
end
3 u6 T( i& d5 I5 [# K* g4 u
3 U% @" ?9 }+ D* \to get-global-proportion0 K! g% @, J6 u+ @( @
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 A- V1 z& @9 O2 D( b7 e6 ?; V
[set global-proportion 0]
: w8 M2 W; X7 u[let i 05 Y! V, V' z- @& {- R+ _  I4 p
let sum-money 0
  L3 Q: [# D% ?* ^; @while[ i < people]: T6 h8 D7 ^/ d/ c3 o8 m: c* m
[
6 ^$ `* ~# K: _9 M# W1 E+ tif( length (item i
5 ]5 A1 s  \' Q& l- l" q[trade-record-all] of customer) > 3 )
$ v! S# D, u' n8 P
[% ~' e( v4 s" }% j$ Q) L) g7 q" C
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ ~! T/ z, @5 y  T0 B" u2 `]
7 M5 F$ M# T9 N( |]
1 {7 e. `) L) }0 G1 J* _let j 0
! ~1 a, a# A. J, @' K* S  ylet note 04 w7 v( |+ r( n' B  j1 J
while[ j < people]- F. E0 l2 ~. o8 `" m. n! D
[
5 P9 u8 F& n4 q2 z6 ?3 ~if( length (item i; d' Y4 Q+ q# d3 k% z
[trade-record-all] of customer) > 3 )
0 T/ v1 E( G+ J' x
[
  m: ?% D* Q) }& r( n9 }6 S" W7 aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 m$ {% a% b; U[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) e) h9 F5 r1 i# w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ f$ X2 ~3 ]4 T1 g" O( u& W- m
]' y; x! |# p9 o4 Y6 q2 F
]
- g& L! Q7 |# E/ Pset global-proportion note: k" `% s! p+ ?
]
* ?  j3 ]4 @( b: ~end8 k2 k  _) i7 n% R2 S
$ j) B) g# j; p' @) g
to do-trade6 s5 |% l9 ~; l' B$ m
;;
这个过程实际上是给双方作出评价的过程4 s# G7 g) h: w8 V1 e2 x& a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) d8 j0 M( D+ p3 Q) g- cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; e+ U& }4 V+ g% ?
set trade-record-current lput(timer) trade-record-current) l  }7 ^) f. f
;;
评价时间
  O0 p' g' {; H3 k0 r, u/ M& Dask myself [
9 A8 h. E# N, {8 t* X3 u  dupdate-local-reputation
& q$ Z- r4 o. \% |4 v& ~set trade-record-current lput([local-reputation] of myself) trade-record-current
  K, x/ p3 a) u5 @4 ^' x]) t+ y  r/ H6 z/ F* g$ j. e
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. {" X1 n4 Q+ w9 ]6 F
;;
将此次交易的记录加入到trade-record-one8 f5 O6 ^' L0 r) T- c
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 z- U' D; l. u: x; |: ulet note (item 2 trade-record-current )# |, h5 S) ]$ Z/ |: R) q! X+ i
set trade-record-current
' K; l% P7 x9 ]# E5 J1 e( u(replace-item 2 trade-record-current (item 3 trade-record-current))
, S7 z5 z/ s2 w) H
set trade-record-current2 n) B3 m8 x% p
(replace-item 3 trade-record-current note)  j: S; {, n# |" H
$ ?! _2 o( H" a0 _7 q* D
2 \( n" h$ n- D% `3 b3 Y8 i
ask customer [
, K" u9 S9 ]" |6 J' W9 k! s3 h1 Wupdate-local-reputation# `" ?5 A) a/ y3 v: h+ X
set trade-record-current
) N9 `* m6 P" W+ j4 t(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& B1 Q& Z* C; B( O% p]2 Y/ R2 B! i% k! u! t1 {

/ v2 R* C" S" f; u! d7 l

$ h, r3 c' H: W% u  |, vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 K- X! W* x+ A! l% _3 C
6 h. B( J& Q# C' B" K  W, u! m
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 y# w. r+ \/ C1 d* u
;;
将此次交易的记录加入到customertrade-record-all  t  @/ l& I4 l% E
end6 M/ z% G+ D) b& {$ p5 l# V

& y: j5 z7 o- t  h6 X2 x0 Q& O+ C6 ]to update-local-reputation6 G5 h1 @1 y# r/ H9 r% B5 s
set [trade-record-one-len] of myself length [trade-record-one] of myself
; K) J& N  `' O: a5 a1 ^5 s, L
3 v5 g. z: u7 Y: T" t$ [7 K) t  ?/ X3 f, U) n
;;if [trade-record-one-len] of myself > 3

/ X, u+ _3 [; nupdate-neighbor-total. Y2 F2 U8 z3 H' B! e
;;
更新邻居节点的数目,在此进行
# b8 \  R& j, f* olet i 3
: D& y1 h3 c/ clet sum-time 0
& x. }/ h, s" j+ a1 O* `while[i < [trade-record-one-len] of myself]4 s  y! H' D9 f' q6 |
[& Q; G* D1 X2 {6 U# l& `" K' a
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, t. W4 u& r7 Bset i+ E0 A6 c2 V6 c4 D3 s3 T
( i + 1)

! t7 n9 @% w) K, n# A: m# N$ @]' m) \/ d8 |$ X/ N, P6 h* }& @
let j 3
" W* t. B2 X4 k- W" Qlet sum-money 0* y) T& s) ]  a; ~( b* f1 u
while[j < [trade-record-one-len] of myself]
) w2 k* I- N9 K! Z1 @[. L" Y* \2 m. B
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)! Q# I% E4 {' G
set j
! r' t4 M4 a" n, c( j + 1)
& K" H( r' S1 r7 t# c+ `7 L
]" P! ~4 [/ x- D" @( s" U- a6 E
let k 3
% W6 J+ a. t* s% W* |$ Ylet power 0: I6 u# o) Z: f+ \. {
let local 0& |7 i$ g" S+ N& N; W1 j0 }( ~3 E" P
while [k <[trade-record-one-len] of myself]4 K5 W, P; Z/ B, b7 G; N9 p
[
( l5 c* t! p+ F9 n% W4 V# I3 fset 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) - ]. ~8 Y0 N# Q8 m" {6 i. |
set k (k + 1)
$ ~& _7 c( @4 z/ F" I]
# c9 z+ `/ j) C+ sset [local-reputation] of myself (local)
- [. X) C! p' |7 k5 G9 Tend" [# }  @5 _3 H9 |) L
+ D9 J. t# r$ m! X: N  {! ^7 p
to update-neighbor-total
, R5 z, l( S, p3 C% C# u8 Q9 ~( W. B- u0 W7 L# f
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: y1 D6 R4 Y: n  V1 V- r: H5 n" G" r( K7 q& ]; ~

0 Q$ k5 V; }# k& ~. T: ]0 send/ ?0 F& g+ p; ^$ T) F: I
. k1 J7 h9 V5 \8 y$ ]+ _9 C
to update-credibility-ijl
8 h- V$ r0 x1 g( d+ K" k) F; |1 C
7 O  I) i$ _: B. t1 J;;
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。( U3 M4 \* u4 M
let l 01 o  U2 q5 t! P$ e7 @* @4 T2 B
while[ l < people ]
" }0 p8 q  X; l$ m4 p/ L2 i: ?! w8 |;;
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/ ~7 N: A/ g: F* U1 w9 r9 m
[8 o9 C: ?" I! z# @+ {3 X6 D
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 V" p! P; d& [# E1 V! h6 Eif (trade-record-one-j-l-len > 3)* {8 M$ y% ~2 n- ~) }# x/ o7 v
[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
2 y% U: x6 t6 J. o9 z' qlet i 30 R7 \2 U$ L2 @' F" p7 a: W
let sum-time 0
6 u  |( Z2 n" |6 v$ t. D/ g% Owhile[i < trade-record-one-len]
& [4 ~, f7 E! J. d& P[
. {+ q; U8 I- o6 D8 k1 rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 @1 [# \) S$ k9 M& G/ ?! M2 lset i
8 G" `+ ^1 l( R$ h' R; U) }( i + 1)

. Z# g) M( C) c- S) S) O# }  o3 |: j]% F6 {$ V4 J' F" \4 G0 v+ M# h5 p
let credibility-i-j-l 0* Y- o* R& k" G& g$ e! b
;;i
评价(jjl的评价)& |+ u3 I, n: ?
let j 3
1 b# z' S1 |% v2 M* I+ Ylet k 4
) r# U3 r: G) l6 C( B) A" xwhile[j < trade-record-one-len]4 u. K3 ^+ f: g
[4 z* h3 |  F  x7 y' f) \
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9 v/ Z7 p5 S. {" J- S" D
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)
2 ]( a+ g2 u0 [' vset j- C7 }& L; ~* Q; _% A1 ?: j2 Z
( j + 1)

) r2 K+ P; W, H3 l9 j3 R- A, g]+ f9 p/ x4 B# G) s/ n  g
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 ))
1 w  y" {+ L1 E- l; _% P
9 f; @5 H& U7 R( H( Z* E$ z6 y/ j+ c

  }; a- Q7 o3 y5 N! O, s) dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: }% @0 u! j: S' E;;
及时更新il的评价质量的评价9 |$ N5 `6 |5 M% d" E0 l8 ~
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 m* n; Z! `# E- Q) C) {
set l (l + 1)
$ f$ Y; x2 a3 x1 l* A/ E# Q% z]
' r. D# U1 Q3 c& h. a0 \- J2 j  jend
  S. v4 y' U0 D$ F2 t% C" f# ]! ?0 m
  L5 I6 ^7 c8 c% n( r% C# K$ Oto update-credibility-list5 E% @/ i; d; T% x
let i 0
. m9 v! b: O/ Cwhile[i < people]
  E4 K4 h. x! {4 S( K[
* g7 x7 f* Y) t% U; zlet j 0$ F# ]# ^& P% m5 W+ M& ?- S
let note 0
9 J+ I( e# x5 d7 [5 y6 r7 Elet k 09 Z9 n, \  w- @& j" h4 x
;;
计作出过评价的邻居节点的数目
$ G! ]) ^* G) a8 M0 zwhile[j < people]
! }1 H6 `: I7 \[
# s: I$ p& g  L+ K  v1 D1 T9 g8 f. S/ Jif (item j( [credibility] of turtle (i + 1)) != -1)
% c. k) |* d; Q: ]; Z: G;;
判断是否给本turtle的评价质量做出过评价的节点
# e- c1 G8 d" V1 \( e9 N0 w) V[set note (note + item j ([credibility]of turtle (i + 1)))3 q' J, {& ^- d) @# Y! N
;;*(exp (-(people - 2)))/(people - 2))]
& _0 V+ m/ p0 Q
set k (k + 1)
3 c7 }% f  \% I]
* B$ f1 G2 J. y  W' nset j (j + 1)
2 B8 p; y, k! L]
0 E0 A% K3 U: B. oset note (note *(exp (- (1 / k)))/ k)9 r! w/ X. D4 D1 Q8 L; u* |2 u
set credibility-list (replace-item i credibility-list note)
+ [* J* L6 E& N" S( I+ B5 B# jset i (i + 1)
% L; d: @, h6 I) V( _]
% S+ H: a9 W) w) dend
0 N. @# ]6 j- ]9 x9 d* C& H* @  Z2 \( V; `5 c' z/ [3 Q! R% b
to update-global-reputation-list
3 |' M, O8 S0 Plet j 0, O9 Z( R2 A4 H# T
while[j < people]
) X0 N+ A  B* O, y4 R[
, f+ K$ p! |) v0 ylet new 0
& B% L; p: V% f! m) S& @5 A6 ^7 |; z/ H% r;;
暂存新的一个全局声誉6 E3 w7 k) _7 t" I) Q9 r, R
let i 0# v0 B. \# s0 Q
let sum-money 03 K+ f3 O8 r9 t8 s' A
let credibility-money 0! P) a" D' E& _8 \: L
while [i < people]1 x* S) T+ x7 w0 S0 |
[
6 D7 Y+ _& D" m/ o4 t; ^set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) L7 x3 @0 [2 U' {
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ Q1 e$ R, n! kset i (i + 1)
' C: j  o( a) n, ~4 C. X5 r3 c6 @]
0 b" ~* `' i1 ^7 {# E1 I5 t$ X( Klet k 0
! f- X1 v: A; p* [; D# n9 _let new1 0
4 `; P% c/ d2 @: v  a+ Pwhile [k < people]2 k5 Z8 n6 g* e1 @3 O4 J2 j
[; @0 @3 _! K- ]+ p; C
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)8 C) E, ~$ o1 P4 h% E0 G
set k (k + 1)
8 \# b: J9 \2 y]
. M3 \6 B/ `/ j! K8 A0 {set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 {; P) K( A* Q0 }; A
set global-reputation-list (replace-item j global-reputation-list new)
* s6 |2 m2 Y. u: [set j (j + 1)
( E$ M. I: X+ {, X/ E0 M* Z]
6 K; }3 s. Q5 U( A0 Iend
5 [: W  s1 ^/ P. A- i* {6 U
$ g0 r4 x! U( o1 ]
+ k/ ?# I  o0 M' l8 k' u6 c1 ]
to get-color
4 D. H- C; d1 H. G. h4 V
% k% c4 F& H2 ?+ N5 x; Sset color blue

' D3 H1 X* T9 p: `: ]# k' j) Eend
0 R, _# \$ \& l  x. Y" N9 O, l- c+ Q2 Z
to poll-class
& s1 P4 Z% s0 U1 v3 v; d- {! d- _end
. K: H* M+ @9 \" M2 Q- D9 U2 J8 P4 }0 E' W0 p+ `0 ~
to setup-plot1
& g  o/ a* j& M! y" ?
/ t1 n  x" b$ K9 o5 [! Qset-current-plot "Trends-of-Local-reputation"
! D' o( j# j' t# }2 l4 A
- C' h$ ^9 Z- z( H- [7 H
set-plot-x-range 0 xmax

. x  Z' B, y1 ?2 X1 t- Z8 k( v8 ?. p: B0 z" V6 M- t4 H
set-plot-y-range 0.0 ymax

. s: b  L+ L! V/ X$ n3 o, Qend
# B% R% T! A6 O- M. Y7 k" e7 C% d7 ]2 I
to setup-plot2
7 k7 N7 P6 b5 ^; {# e- G$ r, @+ S$ X
set-current-plot "Trends-of-global-reputation"

8 z5 L$ V6 F4 e+ t  s) i2 M' j( C6 C8 \8 X
set-plot-x-range 0 xmax

$ C3 Z7 ?, }8 q" S; o: o2 `( z& Z( x  y- E% D! }* |
set-plot-y-range 0.0 ymax

; K1 K6 C/ D2 y* k/ u& L6 Gend
* _- Q2 t. M- }2 t
6 S3 `# }6 S. @. i2 Lto setup-plot3
! t! O% g+ L! d( M* M: a
0 O9 m9 p1 C) Q* V) T9 s/ y/ Qset-current-plot "Trends-of-credibility"
* `& M8 M+ x+ k7 h& a1 J  O3 E2 C5 {

' E9 N# E# c% |' I: e" I$ Jset-plot-x-range 0 xmax

, s$ P' r/ y4 J. R' ]
& J+ d; _  ]: U- D; I( D9 [( Vset-plot-y-range 0.0 ymax
) y0 ~9 H% P& r
end" k4 A  p0 u. p) ?  F5 ?+ Y( w

/ h) E  ]' S( f" e0 [  Hto do-plots
0 f* @; K1 ~: S0 W0 v& m* aset-current-plot "Trends-of-Local-reputation"
$ g( G0 A7 d3 U( I% Yset-current-plot-pen "Honest service"" U' w  F# P  o  p( r& J0 c
end0 p: S7 p0 O0 |0 @8 N
7 x) L" Q; {: t0 g' B
[ 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.
; w9 H3 e! f# v/ W
0 ^  x/ z3 u9 A! g4 S  m7 _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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