(alfa-as submitted TC)

نویسندگان

  • Andrea Bondavalli
  • Felicita Di Giandomenico
  • Fabrizio Grandoni
چکیده

A c l a s s o f c o u n t a n d t h r e s h o l d m e c h a n i s m s , c o l l e c t i v e l y d u b b e d α c o u n t , a b l e t o d i s c r i m i n a t e b e t w e e n t r a n s i e n t f a u l t s a n d i n t e r m i t t e n t f a u l t s i n c o m p u t i n g s y s t e m s i s p r e s e n t e d . T r a n s i e n t f a u l t s d i s c r i m i n a t i o n h a s l o n g b e e n p u r s u e d i n c o m m e r c i a l s y s t e m s : t h r e s h o l d b a s e d t e c h n i q u e s h a v e b e e n p r a c t i c e d f o r s e v e r a l y e a r s f o r t h i s p u r p o s e . T h e p r e s e n t w o r k a i m s t o c o n t r i b u t e t o t h e u s e f u l n e s s o f c o u n t a n d t h r e s h o l d s c h e m e s , t h r o u g h a n a l y s i s o f t h e b e h a v i o u r a n d e x p l o r a t i o n o f t h e e f f e c t s o n t h e s y s t e m . A m a t h e m a t i c a l l y d e f i n e d s t r u c t u r e s i m p l e e n o u g h t o b e a n a l y s e d b y m e a n s o f s t a n d a r d t o o l s i s a d o p t e d . α c o u n t i s e q u i p p e d w i t h i n t e r n a l p a r a m e t e r s , d e s i g n e d t o b e t u n e d t o s u i t e n v i r o n m e n t a l v a r i a b l e s ( s u c h a s t r a n s i e n t f a u l t r a t e , i n t e r m i t t e n t f a u l t o c c u r r e n c e p a t t e r n s ) . E x t e n s i v e b e h a v i o u r a n a l y s i s f o r t w o e m b o d i m e n t s o f t h e s c h e m e , b o t h u n d e r t h e u s u a l a s s u m p t i o n o f e x p o n e n t i a l l y d i s t r i b u t e d f a u l t r a t e s a n d w i t h m o r e r e a l i s t i c f a u l t p a t t e r n s i s c a r r i e d o u t . K e y w o r d s : F a u l t D i s c r i m i n a t i o n , T h r e s h o l d b a s e d I d e n t i f i c a t i o n , T r a n s i e n t a n d I n t e r m i t t e n t f a u l t s , M o d e l l i n g a n d E v a l u a t i o n , F a u l t D i a g n o s i s

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تاریخ انتشار 1998