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By Dermot Browne

This booklet describes innovations for designing and development adaptive consumer interfaces constructed within the huge relief undertaking undertaken via the members.

Key Features
* Describes one of many few large-scale adaptive interface tasks within the world
* Outlines the foundations of adaptivity in human-computer interplay

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T h e e v a l u a t i o n of b e n e f i t s a c c r u i n g w i l l be a d d r e s s e d f u l l y i n C h a p t e r 6. T h e p r o c u r e m e n t or p r o d u c t i o n of a n y s y s t e m o c c u r s d u e to s o m e p e r c e i v e d n e e d or b e n e f i t . E x p l i c i t o b j e c t i v e s w i l l h a v e to b e m e t i f t h e o p e r a t i o n a l s y s t e m i s to be d e e m e d a s u c c e s s a g a i n s t t h e o r i g i n a l c a s e for i t s p r o d u c t i o n . O f c o u r s e e x a m p l e s do e x i s t o f s y s t e m s satisfying needs not envisaged originally and reaching objectives that h a d n o t b e e n c o n s i d e r e d .

W h a t a r e t h e a c t u a l i m p r o v e m e n t s t h a t a r e g o i n g to a c c r u e from t h e effort i n v e s t e d i n i t s p r o d u c t i o n ? O n w h a t b a s i s a r e w e g o i n g to q u a n t i f y i n t e r a c t i o n w i t h t h e s y s t e m i n o r d e r to e s t a b l i s h t h e v a l u e or e v e n v a l i d i t y of t h e a d a p t i v e f e a t u r e ? T h u s , i t i s n e c e s s a r y to e s t a b l i s h t h e p u r p o s e , for t h e i n v e s t m e n t in building a n y adaptive system.

42 W h y build a d a p t i v e systems? Trigger Metric (Trig. e. t h e interpreted input. T h e t r i g g e r s for a d a p t a t i o n c o u l d i n c l u d e t h e l a t e n c y of a u s e r ' s r e s p o n s e , k e y s t r o k e s e q u e n c e s , error t y p e s , e t c . T h e t r i g g e r s d e t e r m i n e w h a t t y p e s o f d a t a m u s t be c a p t u r e d b y t h e s y s t e m a n d form t h e s o u r c e s for t h e a d a p t i v e m e c h a n i s m . T r i g g e r s m a y b e d e r i v e d from t h e s a m e d a t a e l e m e n t s i n different w a y s a n d it is essential therefore t h a t t h e d e s i g n e r describe n o t o n l y w h a t d a t a i s c a p t u r e d b u t a l s o h o w i t i s i n t e r p r e t e d ; for e x a m p l e , f r e q u e n c y of specific errors v e r s u s t o t a l n u m b e r o f e r r o r s .

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