436 research outputs found
Rule-Based Composite Event Queries
Reactive Web systems, Web services, and Web-based publish/
subscribe systems communicate events as XML messages, and in
many cases require composite event detection: it is not sufficient to react
to single event messages, but events have to be considered in relation to
other events that are received over time.
Emphasizing language design and formal semantics, we describe the
rule-based query language XChangeEQ for detecting composite events.
XChangeEQ is designed to completely cover and integrate the four complementary
querying dimensions: event data, event composition, temporal
relationships, and event accumulation. Semantics are provided as
model and fixpoint theories; while this is an established approach for rule
languages, it has not been applied for event queries before
AceWiki: Collaborative Ontology Management in Controlled Natural Language
AceWiki is a prototype that shows how a semantic wiki using controlled
natural language - Attempto Controlled English (ACE) in our case - can make
ontology management easy for everybody. Sentences in ACE can automatically be
translated into first-order logic, OWL, or SWRL. AceWiki integrates the OWL
reasoner Pellet and ensures that the ontology is always consistent. Previous
results have shown that people with no background in logic are able to add
formal knowledge to AceWiki without being instructed or trained in advance
Approaching OBDA Evolution through Mapping Repair
[No abstract available
Towards a Smarter organization for a Self-servicing Society
Traditional social organizations such as those for the management of
healthcare are the result of designs that matched well with an operational
context considerably different from the one we are experiencing today. The new
context reveals all the fragility of our societies. In this paper, a platform
is introduced by combining social-oriented communities and complex-event
processing concepts: SELFSERV. Its aim is to complement the "old recipes" with
smarter forms of social organization based on the self-service paradigm and by
exploring culture-specific aspects and technological challenges.Comment: Final version of a paper published in the Proceedings of
International Conference on Software Development and Technologies for
Enhancing Accessibility and Fighting Info-exclusion (DSAI'16), special track
on Emergent Technologies for Ambient Assisted Living (ETAAL
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