Volume

Dagstuhl Seminar Proceedings, Volume 7191

Publication Details

  • published at: 2007-09-27
  • Publisher: Schloss Dagstuhl – Leibniz-Zentrum für Informatik

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Document
DOI: 10.4230/DagSemProc.07191.1
07191 Abstracts Collection – Event Processing

Authors: Opher Etzion, Mani Chandy, and Rainer von Ammon

Abstract
From 06.05. to 11.05.2007 the Dagstuhl Seminar 07191 ``Event Processing'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available.
Cite as

Opher Etzion, Mani Chandy, and Rainer von Ammon. 07191 Abstracts Collection – Event Processing. In Event Processing. Dagstuhl Seminar Proceedings, Volume 7191, pp. 1-14, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{etzion_et_al:DagSemProc.07191.1,
  author =	{Etzion, Opher and Chandy, Mani and von Ammon, Rainer},
  title =	{{07191 Abstracts Collection – Event Processing}},
  booktitle =	{Event Processing},
  pages =	{1--14},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7191},
  editor =	{Mani Chandy and Opher Etzion and Rainer von Ammon},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07191.1},
  URN =		{urn:nbn:de:0030-drops-11499},
  doi =		{10.4230/DagSemProc.07191.1},
  annote =	{Keywords: Event Processing, Real-time Information Systems, Reactive systems, Proactive systems, Active Technologies}
}
Document
DOI: 10.4230/DagSemProc.07191.2
07191 Summary – Event Processing

Authors: Mani Chandy, Opher Etzion, Rainer von Ammon, and Peter Niblett

Abstract
This is the summary of the Dagstuhl Seminar on Event Processing.
Cite as

Mani Chandy, Opher Etzion, Rainer von Ammon, and Peter Niblett. 07191 Summary – Event Processing. In Event Processing. Dagstuhl Seminar Proceedings, Volume 7191, pp. 1-30, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{chandy_et_al:DagSemProc.07191.2,
  author =	{Chandy, Mani and Etzion, Opher and von Ammon, Rainer and Niblett, Peter},
  title =	{{07191 Summary – Event Processing}},
  booktitle =	{Event Processing},
  pages =	{1--30},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7191},
  editor =	{Mani Chandy and Opher Etzion and Rainer von Ammon},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07191.2},
  URN =		{urn:nbn:de:0030-drops-11487},
  doi =		{10.4230/DagSemProc.07191.2},
  annote =	{Keywords: Event Processing}
}
Document
DOI: 10.4230/DagSemProc.07191.3
An XML Framework for Integrating Continuous Queries, Composite Event Detection, and Database Condition Monitoring for Multiple Data Streams

Authors: Susan Urban, Suzanne Dietrich, and Yi Chen

Abstract
With advancements in technology over the last ten years, data management issues have evolved from a stored persistent form to also include streaming data generated from sensors and other software monitoring tools. Furthermore, distributed, event-based systems are becoming more prevalent, with a need to develop applications that can dynamically respond to information extracted from data streams. This research is investigating the integration of stream processing and event processing techniques, with expressive filtering capabilities that include queries over persistent databases to provide application context to the filtering process. Distributed Event Processing Agents (DEPAs) continuously filter events from multiple data streams of different formats that provide XML views. Composite events for data streams are expressed using the Composite Event Detection Language (CEDL) and mapped to Composite XQuery (CXQ) for implementation. CXQ is a language that extends XQuery with features from CEDL, including operators for expressing sequence, disjunction, conjunction, repetition, aggregation, and time windows for events. Continuous queries and composite event filters are integrated with techniques for materialized view maintenance and incremental evaluation in condition monitoring to provide efficient ways of enhancing stream filters with database queries. The filtering and event detection load is distributed among multiple DEPAs, with CXQ expressions decomposed to allocate subcomponents of the expression to DEPAs that efficiently communicate in the global detection of composite events. A unique aspect of our research is that it extends XQuery with temporal, composite event features to combine techniques for continuous queries in stream processing, incremental evaluation in condition monitoring, and detection and filtering of composite events, creating an expressive environment for the extraction of meaningful events from multiple data streams with XML views.
Cite as

Susan Urban, Suzanne Dietrich, and Yi Chen. An XML Framework for Integrating Continuous Queries, Composite Event Detection, and Database Condition Monitoring for Multiple Data Streams. In Event Processing. Dagstuhl Seminar Proceedings, Volume 7191, pp. 1-5, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{urban_et_al:DagSemProc.07191.3,
  author =	{Urban, Susan and Dietrich, Suzanne and Chen, Yi},
  title =	{{An XML Framework for Integrating Continuous Queries, Composite Event Detection, and Database Condition Monitoring for Multiple Data Streams}},
  booktitle =	{Event Processing},
  pages =	{1--5},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7191},
  editor =	{Mani Chandy and Opher Etzion and Rainer von Ammon},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07191.3},
  URN =		{urn:nbn:de:0030-drops-11423},
  doi =		{10.4230/DagSemProc.07191.3},
  annote =	{Keywords: Composite events, stream processing, event filtering, extended XQuery, distributed event processing}
}
Document
DOI: 10.4230/DagSemProc.07191.4
BiCEP - Benchmarking Complex Event Processing Systems

Authors: Pedro Bizarro

Abstract
BiCEP is a new project being started at the University of Coimbra to benchmark Complex Event Processing systems (CEP). Although BiCEP is still in the early stages, we list here some of the design considerations that will drive our future work and some of the metrics we plan to include in the benchmark.
Cite as

Pedro Bizarro. BiCEP - Benchmarking Complex Event Processing Systems. In Event Processing. Dagstuhl Seminar Proceedings, Volume 7191, pp. 1-6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{bizarro:DagSemProc.07191.4,
  author =	{Bizarro, Pedro},
  title =	{{BiCEP - Benchmarking Complex Event Processing Systems}},
  booktitle =	{Event Processing},
  pages =	{1--6},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7191},
  editor =	{Mani Chandy and Opher Etzion and Rainer von Ammon},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07191.4},
  URN =		{urn:nbn:de:0030-drops-11433},
  doi =		{10.4230/DagSemProc.07191.4},
  annote =	{Keywords: Complex Event Processing, benchmark, synthetic benchmark, events, response time, throughput, scalability, adaptivity, query processing}
}
Document
DOI: 10.4230/DagSemProc.07191.5
Denial of Information Attacks in Event Processing

Authors: Calton Pu

Abstract
It is a common assumption in event processing that the events are "clean", i.e., they come from well-behaved and trustworthy sources. Some researchers have studied uncertain event streams [Mok et al, RTCSA’06], but few have considered malicious event sources. In the real world, event sources from open environments (e.g., large scale sensor networks and Internet) can be influenced by adversaries injecting misleading or noise data. This has happened to all media that have become valuable in open environments. Spammers have been active with email spam, web spam, blog spam, spam over VoIP, and fake profiles in social networks. We call this automated injection of false or noise fabricated events "Denial of Information" (DOI) attacks. The automated nature of DOI attacks makes it inexpensive and easy to implement. DOI attacks introduce some fundamental research challenges. For example, consider a set of audio sensors for detection of activities through sound. If half of the sensors report sound and the other half are silent, it is difficult to decide whether the silent one are reporting real phenomena (with the sound purposefully produced by the adversary) or the noisy ones are reporting real phenomena (assuming the silent ones have been incapacitated). This problem is often called Deceptive Information Detection. Furthermore, DOI attacks are different from typical information security problems (e.g., multi-level security) is the "arms race" between DOI attacks and defenses. This can be illustrated with the co-evolution of spam messages and automated email filters employed by spam victims. The evolution of email spam (with randomized camouflaged content and image spam) is a good example. This problem is usually called Adversarial Learning. Robust event processing of the future must be able to tolerate and resist DOI attacks, by introducing techniques and tools that can counter DOI attacks in areas such as Deceptive Information Detection and Adversarial Learning. We discuss some progress made in specific applications such as email to illustrate the difficulty of these challenges and some promising approaches.
Cite as

Calton Pu. Denial of Information Attacks in Event Processing. In Event Processing. Dagstuhl Seminar Proceedings, Volume 7191, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{pu:DagSemProc.07191.5,
  author =	{Pu, Calton},
  title =	{{Denial of Information Attacks in Event Processing}},
  booktitle =	{Event Processing},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7191},
  editor =	{Mani Chandy and Opher Etzion and Rainer von Ammon},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07191.5},
  URN =		{urn:nbn:de:0030-drops-11473},
  doi =		{10.4230/DagSemProc.07191.5},
  annote =	{Keywords: Denial of information, information security, adversarial learning, deceptive information detection}
}
Document
DOI: 10.4230/DagSemProc.07191.6
Infrastructure for Smart Cities: The Killer Application for Event-Based Computing

Authors: Alejandro P. Buchmann

Abstract
Infrastructures for smart cities are considered a potential killer app for event-based computing. Event services are a crucial part of the infrastructure. The complexity of the event services is compounded by the richness of the events, the number of (mobile) sensors and devices, heterogeneity, requirements for seamless integration, unstable communication and interference, quality of service requirements, the need for context awareness and device orchestration and self-X properties.
Cite as

Alejandro P. Buchmann. Infrastructure for Smart Cities: The Killer Application for Event-Based Computing. In Event Processing. Dagstuhl Seminar Proceedings, Volume 7191, pp. 1-2, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{buchmann:DagSemProc.07191.6,
  author =	{Buchmann, Alejandro P.},
  title =	{{Infrastructure for Smart Cities: The Killer Application for Event-Based Computing}},
  booktitle =	{Event Processing},
  pages =	{1--2},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7191},
  editor =	{Mani Chandy and Opher Etzion and Rainer von Ammon},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07191.6},
  URN =		{urn:nbn:de:0030-drops-11453},
  doi =		{10.4230/DagSemProc.07191.6},
  annote =	{Keywords: Events, event-based computing}
}
Document
DOI: 10.4230/DagSemProc.07191.7
On the Cost of Shifting Event Processing within Wireless Environments

Authors: Kirsten Terfloth, Katharina Hahn, and Agnès Voisard

Abstract
With the emergence of wireless sensor networks, the challenges of event recognition and processing have been partially shifted into the embedded domain. While new processing capabilities on small devices allow for physically close event monitoring and fast filtering, new challenges due to sparse resources or medium contention when relying on wireless communication arise. Within this talk, a short introduction into an experimental setup featuring event-detection on a construction fence is given. The goal has been to distinguish a person climbing over the fence from other events, which it may be exposed to, with the help of a wireless sensor network. The results obtained will be presented thoroughly. Regarding those, we discuss in which situations distributed event recognition and processing is to be preferred over a conventional server-centered deployment. Therefore, the costs such as communication, hardware and deployment related costs implying an architectural decision are examined.
Cite as

Kirsten Terfloth, Katharina Hahn, and Agnès Voisard. On the Cost of Shifting Event Processing within Wireless Environments. In Event Processing. Dagstuhl Seminar Proceedings, Volume 7191, pp. 1-6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{terfloth_et_al:DagSemProc.07191.7,
  author =	{Terfloth, Kirsten and Hahn, Katharina and Voisard, Agn\`{e}s},
  title =	{{On the Cost of Shifting Event Processing within Wireless Environments}},
  booktitle =	{Event Processing},
  pages =	{1--6},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7191},
  editor =	{Mani Chandy and Opher Etzion and Rainer von Ammon},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07191.7},
  URN =		{urn:nbn:de:0030-drops-11413},
  doi =		{10.4230/DagSemProc.07191.7},
  annote =	{Keywords: Event processing, embedded devices}
}
Document
DOI: 10.4230/DagSemProc.07191.8
Sensor Event Processing on Grid

Authors: Eui-Nam Huh

Abstract
Wireless sensor networks are increasingly being deployed in many important applications. For sharing huge amount of sensor data efficiently with diverse users, an information dissemination mechanism is very necessary and important component. In this paper, we have proposed an efficient architecture integrated with sensor network and Grid technology. To disseminate the sensed data to users geographically distributed, an experimental method using Data Grid on pub/sub (publish/subscription) is designed for a u-Healthcare application and its performance is evaluated for various predicate cases.
Cite as

Eui-Nam Huh. Sensor Event Processing on Grid. In Event Processing. Dagstuhl Seminar Proceedings, Volume 7191, pp. 1-6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{huh:DagSemProc.07191.8,
  author =	{Huh, Eui-Nam},
  title =	{{Sensor Event Processing on Grid}},
  booktitle =	{Event Processing},
  pages =	{1--6},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7191},
  editor =	{Mani Chandy and Opher Etzion and Rainer von Ammon},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07191.8},
  URN =		{urn:nbn:de:0030-drops-11463},
  doi =		{10.4230/DagSemProc.07191.8},
  annote =	{Keywords: Event processing, sensor networks, Grid, Dissemination}
}
Document
DOI: 10.4230/DagSemProc.07191.9
Twelve Theses on Reactive Rules for the Web

Authors: François Bry and Michael Eckert

Abstract
Reactivity, the ability to detect and react to events, is an essential functionality in many information systems. In particular, Web systems such as online marketplaces, adaptive (e.g., recommender) sys- tems, and Web services, react to events such as Web page updates or data posted to a server. This article investigates issues of relevance in designing high-level programming languages dedicated to reactivity on the Web. It presents twelve theses on features desirable for a language of reactive rules tuned to programming Web and Semantic Web applications.
Cite as

François Bry and Michael Eckert. Twelve Theses on Reactive Rules for the Web. In Event Processing. Dagstuhl Seminar Proceedings, Volume 7191, pp. 1-6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{bry_et_al:DagSemProc.07191.9,
  author =	{Bry, Fran\c{c}ois and Eckert, Michael},
  title =	{{Twelve Theses on Reactive Rules for the Web}},
  booktitle =	{Event Processing},
  pages =	{1--6},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7191},
  editor =	{Mani Chandy and Opher Etzion and Rainer von Ammon},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07191.9},
  URN =		{urn:nbn:de:0030-drops-11445},
  doi =		{10.4230/DagSemProc.07191.9},
  annote =	{Keywords: Event-Condition-Action Rules, Web}
}
Document
DOI: 10.4230/DagSemProc.07191.10
Ubiquitous Nature of Event-Driven Approaches: A Retrospective View

Authors: Sharma Chakravarthy and Raman Adaikkalavan

Abstract
This paper retrospectively analyzes the progress of event-based capability and their applicability in various domains. Although research on event-based approaches started in a humble manner with the intention of introducing triggers in database management systems for monitoring application state and to automate applications by reducing/eliminating user intervention, currently it has become a force to reckon with as it finds use in many diverse domains. This is primarily due to the fact that a large number of real-world applications are indeed event-driven and hence the paradigm is apposite. In this paper, we briefly overview the development of the ECA (or event-condition-action) paradigm. We briefly discuss the evolution of the ECA paradigm (or active capability) in relational and Object-oriented systems. We then describe several diverse applications where the ECA paradigm has been used effectively. The applications range from customized monitoring of web pages to specification and enforcement of access control policies using RBAC (role-based access control). The multitude of applications clearly demonstrate the ubiquitous nature of event-based approaches to problems that were not envisioned as the ones where the active capability would be applicable. Finally, we indicate some future trends that can benefit from the ECA paradigm.
Cite as

Sharma Chakravarthy and Raman Adaikkalavan. Ubiquitous Nature of Event-Driven Approaches: A Retrospective View. In Event Processing. Dagstuhl Seminar Proceedings, Volume 7191, pp. 1-12, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{chakravarthy_et_al:DagSemProc.07191.10,
  author =	{Chakravarthy, Sharma and Adaikkalavan, Raman},
  title =	{{Ubiquitous Nature of Event-Driven Approaches: A Retrospective View}},
  booktitle =	{Event Processing},
  pages =	{1--12},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7191},
  editor =	{Mani Chandy and Opher Etzion and Rainer von Ammon},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07191.10},
  URN =		{urn:nbn:de:0030-drops-11505},
  doi =		{10.4230/DagSemProc.07191.10},
  annote =	{Keywords: Complex event processing, stream processing, semantics, evet-driven applications}
}

Filters

  • Authors
  • A
  • Adaikkalavan, Raman
  • B
  • Bizarro, Pedro
  • Bry, François
  • Buchmann, Alejandro P.
  • C
  • Chakravarthy, Sharma
  • Chandy, Mani
  • Chen, Yi
  • D
  • Dietrich, Suzanne
  • E
  • Eckert, Michael
  • Etzion, Opher
  • H
  • Hahn, Katharina
  • Huh, Eui-Nam
  • N
  • Niblett, Peter
  • P
  • Pu, Calton
  • T
  • Terfloth, Kirsten
  • U
  • Urban, Susan
  • V
  • Voisard, Agnès
  • von Ammon, Rainer

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