Quality-aware Dynamic Software Product Lines: the Body Area Network Case

Datum

07.03.2013

Zeit

16:40 - 18:00

Sprecher

VANDER ALVES

Serie

cfaed Seminar Series

Sprache

en

Hauptthema

Informatik

Andere Themen

Informatik, Elektro- u. Informationstechnik

Host

Sandra Bley, cfaed

Beschreibung

Demographic and social changes have increased thenumber ofelderly people living alone. Many of these need continuousmedical assistance, yet it is not sustainable to have dedicatedmedical professionalfor each of them. Accordingly, automated support hasbeen proposed, in particular, Body Area Network, in which a persongoes abouthis or her daily activities at home or outdoors, butwears sensorsmonitoring vital signs and providing emergency detectionand prevention. Such systems have to strike a balance betweenconflicting requirements, such as availability and reliability, e.g., if aperson iswell, not all sensors need to be active and working at thehighest samplingrate; on the other hand, if he or she falls or has a stroke, theopposite must happen with the sensors.  We explore how Dynamic Software Product Line (DSPL) achieve this goal. Accordingly, aDSPL reconfiguresitself based on some context change e.g., thepersons‘ medicalsituation, to meet a new  and more suitable quality goalfor thatnew situation, as specified by a reliability contract providedby thedomain expert (a medical doctor). This contract is modeled asa statemachine, whose transitions are  medical events (e.g.,fall, stroke) and states are target reliability goals, promptingare configurationto meet it. The quality of any given configurationis measuredby a single function over the features of the DSPLand relatedquality information. This function is derived froma parametricdiscrete time Markov chain model representingthe reliabilityof the DSPL. Further, this function relies on anormalized formof the feature model based on optional features. Weanalyze achievedexpressiveness as well as time and space complexity issues. 

Links

• http://tu-dresden.de/veranstaltungen/termin?id=TUD512f418acedaf

Letztmalig verändert: 07.03.2013, 08:46:13