This document summarizes a presentation given at the International Conference on Mobile Data Management in 2009. The presentation discussed research into improving mobile access to multimedia services based on MPEG-7 metadata. It described a German research cluster called UMIC that is developing mobile multimedia applications and services. It then discussed methods for enhancing mobile multimedia performance, including distributing services using mobile web services and enterprise service buses. The presentation evaluated these approaches through a system called MobSOS and concluded that scalability and interoperability are important for mobile multimedia services across different platforms.
The Social Requirements Engineering (SRE) Approach to Developing a Large-scal...Ralf Klamma
The Social Requirements Engineering (SRE) Approach to Developing a Large-scale Personal Learning Environment Infrastructure
Effie Lai-Chong Law, Arunangsu Chatterjee, Dominik Renzel and Ralf Klamma
Department of Computer Science, University of Leicester, UK
Chair of Computer Science 5 - Information Systems, RWTH Aachen University, Germany
EC-TEL 2012, Saarbrücken, Germany
September 21, 2012
The Social Requirements Engineering (SRE) Approach to Developing a Large-scal...Ralf Klamma
The Social Requirements Engineering (SRE) Approach to Developing a Large-scale Personal Learning Environment Infrastructure
Effie Lai-Chong Law, Arunangsu Chatterjee, Dominik Renzel and Ralf Klamma
Department of Computer Science, University of Leicester, UK
Chair of Computer Science 5 - Information Systems, RWTH Aachen University, Germany
EC-TEL 2012, Saarbrücken, Germany
September 21, 2012
Enhancing Academic Event Participation with Context-aware and Social Recommen...Dejan Kovachev
The plethora of talks and presentations taking place at academic conferences makes it difficult, especially for young researchers to attend the
right talks or discuss with participants and potential collaborators with similar interests. Participants may not have a priori knowledge that allows
them to select the right talks or informal interactions with other participants. In this paper we present the context-aware mobile
recommendation services (CAMRS) based on the current context (whereabouts at the venue, popularity and activities of talks and presentations)
sensed at the conference venue. Additionally, we augment the current context with the academic community context of conference participants
which is inferred by using social network analysis and link prediction on large-scale co-authorship and citation networks of participants. By
combining the dynamic and social context of participants, we are able to recommend talks and people that may be interesting to a particular
participant. We evaluated CAMRS using data from two large digital libraries - the DBLP and CiteSeerX, and participants from two conferences -
ICWL 2010 and EC-TEL 2011. The result shows that the new approach can recommend novel talks and helps participants in establishing new
connections at conference venue.
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Mobile multimedia services are in high demand, but their development comes at high costs. The emergent computing paradigm cloud computing has great potential to embrace these issues. In fact, we are at the early stage of the coalescence of cloud computing, mobile multimedia and the Web. Motivated by the tremendous success story of the Web based on its simplicity principles, we argue for a comprehensive review on current practices of web and mobile multimedia cloud computing techniques for avoiding frictions. We draw on experience from the development of advanced collaborative multimedia web applications utilizing multimedia metadata standards like MPEG-7 and real-time communication protocols like XMPP. We propose our i5CLoud, a hybrid cloud architecture, which serves as a substrate for scalable and fast time-to-market mobile multimedia services. This paper demonstrates the applicability of emerging cloud computing concepts for mobile multimedia.
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The 10thWorkshop on Multimedia Metadata (SeMuDaTe‘09)
Yiwei Cao, Ralf Klamma, and Dejan KovachevI
Informatik 5 (Information Systems), RWTH Aachen University
2.12.2009
Graz, Austria
Six Blue Data State Of The Art Of mICT 20090630SixBlue Data
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PWM Wissenstag Social Enterprise @ I-KNOW 2013
Wednesday, September 4, 2013 in Graz (Austria)
Ralf Klamma
Advanced Community Information Systems (ACIS)
RWTH Aachen
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With the advent of mobile smart phones, new types of virtual communities arrived, i.e. mobile communities. Mobile communities, with respect to their IT needs, introduce new requirements compared to traditional online web communities. On the other hand, cloud computing is emerging as computing concept that promises provision of computational resources on demand and abstraction of technical details from the clients. We propose Mobile Community Cloud Platform (MCCP) as a cloud computing system that can leverage the full potential of mobile community growth. An analysis of the core requirements of common mobile communities is provided before we present the design of our cloud computing architecture that supports building and evolving of mobile communities.
Everyone is drawn to the cool new ways to connect devices to the Internet and make life easier—and a little more futuristic. But, do you know that IoT has been around since the past century? Theresa Lanowitz is one of the early advocates of what is now IoT and is thrilled that the pace of acceptance is accelerating—rapidly. This level of acceptance and understanding of IoT was not always the case. Theresa shares the early ideas, vision, and concepts of the Sun Jini project, the pre-cursor to IoT, and offers advice for developers and testers on how to succeed with IoT. Whether you are part of the industrial, consumer, or enterprise IoT, you face challenges of how to ensure your software is fast enough, safe enough, and secure enough to deliver the desired outcome. Uncover the artifacts from 1999 and discover why 2017 is the year that IoT becomes more science than fiction.
Enhancing Academic Event Participation with Context-aware and Social Recommen...Dejan Kovachev
The plethora of talks and presentations taking place at academic conferences makes it difficult, especially for young researchers to attend the
right talks or discuss with participants and potential collaborators with similar interests. Participants may not have a priori knowledge that allows
them to select the right talks or informal interactions with other participants. In this paper we present the context-aware mobile
recommendation services (CAMRS) based on the current context (whereabouts at the venue, popularity and activities of talks and presentations)
sensed at the conference venue. Additionally, we augment the current context with the academic community context of conference participants
which is inferred by using social network analysis and link prediction on large-scale co-authorship and citation networks of participants. By
combining the dynamic and social context of participants, we are able to recommend talks and people that may be interesting to a particular
participant. We evaluated CAMRS using data from two large digital libraries - the DBLP and CiteSeerX, and participants from two conferences -
ICWL 2010 and EC-TEL 2011. The result shows that the new approach can recommend novel talks and helps participants in establishing new
connections at conference venue.
Beyond the Client-Server Architectures: A Survey of Mobile Cloud TechniquesDejan Kovachev
Mobile applications nowadays are developed either for a local (native) or for a client-server execution. However, applications in the future will be developed with cloud in mind, i.e. act as native applications, but do the heavy processing and storage in the cloud, deliver only needed parts and data at runtime and able to run offline. In order to better understand how to facilitate the building of mobile cloud-based applications, we have surveyed existing work in mobile computing through the prism of cloud computing principles. We provide an overview of the results from this survey, in particular, models of mobile cloud applications. We also highlight research challenges in the area of mobile cloud computing.
Mobile Multimedia Cloud Computing and the WebDejan Kovachev
Mobile multimedia services are in high demand, but their development comes at high costs. The emergent computing paradigm cloud computing has great potential to embrace these issues. In fact, we are at the early stage of the coalescence of cloud computing, mobile multimedia and the Web. Motivated by the tremendous success story of the Web based on its simplicity principles, we argue for a comprehensive review on current practices of web and mobile multimedia cloud computing techniques for avoiding frictions. We draw on experience from the development of advanced collaborative multimedia web applications utilizing multimedia metadata standards like MPEG-7 and real-time communication protocols like XMPP. We propose our i5CLoud, a hybrid cloud architecture, which serves as a substrate for scalable and fast time-to-market mobile multimedia services. This paper demonstrates the applicability of emerging cloud computing concepts for mobile multimedia.
Multimedia Processing on Multimedia Semantics and Multimedia ContextRalf Klamma
The 10thWorkshop on Multimedia Metadata (SeMuDaTe‘09)
Yiwei Cao, Ralf Klamma, and Dejan KovachevI
Informatik 5 (Information Systems), RWTH Aachen University
2.12.2009
Graz, Austria
Six Blue Data State Of The Art Of mICT 20090630SixBlue Data
"State of the Art of mobile Information-Communication Technology" - presented at Save the Children Health conference at Norwalk, CT 30 June 2009 by David Isaak of Sixblue Data. http://www.sixbluedata.com
Supporting Professional Communities in the Next Web Ralf Klamma
Keynote
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Wednesday, September 4, 2013 in Graz (Austria)
Ralf Klamma
Advanced Community Information Systems (ACIS)
RWTH Aachen
Mobile Community Cloud Computing: Emerges and EvolvesDejan Kovachev
With the advent of mobile smart phones, new types of virtual communities arrived, i.e. mobile communities. Mobile communities, with respect to their IT needs, introduce new requirements compared to traditional online web communities. On the other hand, cloud computing is emerging as computing concept that promises provision of computational resources on demand and abstraction of technical details from the clients. We propose Mobile Community Cloud Platform (MCCP) as a cloud computing system that can leverage the full potential of mobile community growth. An analysis of the core requirements of common mobile communities is provided before we present the design of our cloud computing architecture that supports building and evolving of mobile communities.
Everyone is drawn to the cool new ways to connect devices to the Internet and make life easier—and a little more futuristic. But, do you know that IoT has been around since the past century? Theresa Lanowitz is one of the early advocates of what is now IoT and is thrilled that the pace of acceptance is accelerating—rapidly. This level of acceptance and understanding of IoT was not always the case. Theresa shares the early ideas, vision, and concepts of the Sun Jini project, the pre-cursor to IoT, and offers advice for developers and testers on how to succeed with IoT. Whether you are part of the industrial, consumer, or enterprise IoT, you face challenges of how to ensure your software is fast enough, safe enough, and secure enough to deliver the desired outcome. Uncover the artifacts from 1999 and discover why 2017 is the year that IoT becomes more science than fiction.
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klamma@dbis.rwth-aachen.de
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klamma@dbis.rwth-aachen.de
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RWTH Aachen University, Germany & Tallinn University, Estonia
klamma@dbis.rwth-aachen.de & tley@tlu.ee
Ralf Klamma
Advanced Community Information Systems (ACIS)RWTH Aachen University, Germany
klamma@dbis.rwth-aachen.de
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las2peer is a distributed, highly reliable and secure platform for creating community information systems and community services.
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RWTH Aachen University Advanced Community Information Systems (ACIS) Aachen, Germany
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RWTH Aachen University
Ahornstr. 55 | 52056 Aachen | Germany
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Mobile Access to MPEG-7 Based Multimedia Services
1. International Conference on Mobile Data
Management (MDM ‘09)
MDM 2009
Mobile Access to MPEG-7 Based
Multimedia Services
Yiwei Cao
Matthias Jarke
Ralf Klamma
Oscar Mendoza
Satish Srirama
Yiwei Cao 曹怡蔚, Matthias Jarke, Ralf Klamma,
Oscar Mendoza, and Satish Srirama
Informatik 5 (Information Systems), RWTH Aachen University
May 19, 2009
Taipei, Taiwan
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-CJK*-0509-1
2. Agenda
Introduction
– The German Excellence Research Cluster UMIC
MDM 2009
– Requirements from the LAS multimedia services
– Research questions
Yiwei Cao
Matthias Jarke
Methodologies and technologies
Mobile access to multimedia services
Ralf Klamma
Oscar Mendoza
Satish Srirama
– Mobile access with mobile web servers and via ESB
– Implementation on iPhones and smartphones
– Evaluation by service monitoring on MobSOS
Conclusions and outlook
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-CJK*-0509-2
3. Introduction to UMIC
Ultra High-Speed Mobile Information and Communication
– A research cluster established at RWTH Aachen University
MDM 2009
under the excellence initiative of the German Government,
2006-2011 with an average funding of 6.5 million Euro per year
Yiwei Cao
– Concepts and demonstrators for smart, mobile, broadband,
Matthias Jarke
Ralf Klamma
low-cost systems
– Interdisciplinary design with four research
Oscar Mendoza
Satish Srirama
areas among over 20 research groups
Mobile Application & Services
– Demanding applications of the
next-generation mobile Internet
Lehrstuhl Informatik 5
– Quality of mobile services
Virtual Campfire – mobile social software
(Informationssysteme)
Prof. Dr. M. Jarke
I5-CJK*-0509-3
4. Requirements for UMIC in Scenario
Virtual Campfire
Mobile social software Virtual Campfire
Architecture
MDM 2009 Software MobSOS
Web Mobile
services web services
...
LAS ??
Yiwei Cao
Matthias Jarke
Ralf Klamma
Affordable communication Mesh networks, WiMax, etc.
Oscar Mendoza technologies
Satish Srirama
A load balancing distribution of multimedia services to
enhance quality of service
Better access to multimedia services on the mobile client
side for scalability
Lehrstuhl Informatik 5
(Informationssysteme)
Mobile service sharing among different mobile device holders
Prof. Dr. M. Jarke
I5-CJK*-0509-4
5. The LAS Server
Lightweight Application Server
(Spaniol et al., 2006)
MDM 2009
The community engine
MPEG-7 based multimedia services
Yiwei Cao Web Services orchestration
Matthias Jarke
Ralf Klamma
Oscar Mendoza
Easy configuration and rapid prototyping
Satish Srirama
Mobile access?
Distributed?
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-CJK*-0509-5
6. Research Questions
How can performance of mobile multimedia applications
be enhanced?
MDM 2009
– Reduction of large data volumes
– Reduction of high cost of wireless data communication
– Dealing with overload of rich semantic information
Yiwei Cao – Data interoperability among different mobile platforms
Does mobile middleware provide good solutions?
Matthias Jarke
Ralf Klamma
Oscar Mendoza
Satish Srirama
– What kind of mobile middleware solutions exist on those
handheld devices with limited resource capacity?
– Is additional data communication overhead resulted
by middleware?
– What about the portability and scalability of mobile access
on various mobile platforms?
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-CJK*-0509-6
7. Methodologies and Technologies
Service Oriented Architecture
(Burberk, 2000; Hasan and Duran, 2006)
MDM 2009 – Web Services
– Cloud Computing (Chappell, 2008)
Yiwei Cao
Mobile Web Services
Matthias Jarke
Ralf Klamma (Srirama et al., 2006)
Oscar Mendoza
Satish Srirama
– Mobile devices are Web Service
consumers and providers
– Standards based, e.g. SOAP, XML,
WSDL, HTTP
– Use of kSOAP and kXML
Lehrstuhl Informatik 5
Enterprise Integration (Keen et al., 2004)
(Informationssysteme)
Prof. Dr. M. Jarke
I5-CJK*-0509-7
– Enterprise Service Bus (ESB)
8. MPEG-7 Based Multimedia Services
MPEG-7 Multimedia Content Description Interface (Martinez et al., 2002)
Multimedia annotation services (Spaniol et al., 2006)
MDM 2009 – Automatic extraction of technical and context-aware information
– Multiple tagging methods: free text, image, semantic based, commsonomy
Multimedia search services (Cao et al., 2008) LAS services
– Semantic search
Yiwei Cao
Multimedia Multimedia Multimedia
Matthias Jarke
Ralf Klamma
Oscar Mendoza – Keyword search search annotation sharing
services services services
Satish Srirama
– Context-aware search etc.
Multimedia sharing services (Klamma et al., 08) MPEG-7 services
– Storytelling service LAS core services
– Image services etc.
The basic multimedia MPEG-7 services (Klamma et al., 2006)
Lehrstuhl Informatik 5
– Creation and modification of MPEG-7 metadata
(Informationssysteme)
Prof. Dr. M. Jarke – XML binding
I5-CJK*-0509-8
9. Alternative System Architecture
LAS access with Mobile Web
Services
MDM 2009
Yiwei Cao
Matthias Jarke
Ralf Klamma
Oscar Mendoza
Satish Srirama
LAS access via
Enterprise Service
Lehrstuhl Informatik 5
Bus (ESB)
(Informationssysteme)
Prof. Dr. M. Jarke
I5-CJK*-0509-9
10. Implementation
Mobile middleware
– Mobile Web Services on the
MDM 2009
Mobile Host
– OpenESB
Yiwei Cao
Matthias Jarke
The prototype on the client side
Ralf Klamma
Oscar Mendoza – Mobile access to LAS
– Nokia N95: J2ME CLDC
Satish Srirama
– iPhone: Objective C
– Mobile multimedia annotation:
free text tagging and MPEG-7
standard based semantic tagging
Lehrstuhl Informatik 5
– Mobile multimedia search
(Informationssysteme)
Prof. Dr. M. Jarke and retrieval
I5-CJK*-0509-10
11. Evaluation via MobSOS
MobSOS is a test bed for multimedia community services
(Renzel et al., 2008)
MDM 2009
Theoretically conceptualized on the D&M IS Success Model
(Delone and McLean, 1992)
Yiwei Cao
Matthias Jarke
Easy in use via the MobSOS HTTP connector
Ralf Klamma
Oscar Mendoza Each LAS service call is monitored and stored in the
monitoring data repository
Satish Srirama
The survey data repository to enhance system and
information quality via users’ satisfaction measure
Data analysis with SPSS
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-CJK*-0509-11
12. Evaluation Results
Multimedia files are retrieved on search request on mobile devices
MPEG-7 based multimedia services are monitored by MobSOS
MDM 2009
Yiwei Cao
Matthias Jarke
Ralf Klamma
Oscar Mendoza
Satish Srirama
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-CJK*-0509-12
13. Conclusions
Design and implementation of alternative architecture
Factors Mobile Web Services ESB as middleware
MDM 2009 Performance Response time is proportional to multi- Response time increases
media file size and increases exponentially linearly at a low rate
Scalability Not scalable, only one LAS server is Scalable, distributed access
connected to LAS services
Yiwei Cao
Matthias Jarke
Development Details must be known by clients WSDL is used to publish and
Ralf Klamma cost find Web services on the ESB
Oscar Mendoza
Satish Srirama Reliability Long response time by Web Services Short response time
overload
Interoperability and scalability are crucial for mobile multimedia
services across various mobile platforms
Load balancing can reduce wireless data communication cost
and improve mobile multimedia service quality
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-CJK*-0509-13
Quality of services can be traced by service monitoring
14. Outlook
A complete mobile multimedia service chain for
mobile multimedia management
Interoperable mobile multimedia management
MDM 2009
Further enhancement of multimedia service
Yiwei Cao
Matthias Jarke quality with MobSOS monitoring Multimedia
sharing by
Ralf Klamma
Oscar Mendoza
Satish Srirama Multimedia services sharing storytelling etc.
via the XMPP protocol
Multimedia Multimedia Multimedia
Context-aware and semantic creation with services search and
monitoring adaptation
mobile multimedia services 3D scanners
Mobile services as nodes in the
MPEG-7 based
Lehrstuhl Informatik 5
(Informationssysteme)
vision of Cloud Computing multimedia
Prof. Dr. M. Jarke annotation
I5-CJK*-0509-14
15. Questions?
http://www.umic.rwth-aachen.de
The 8th International Conference on Web-based Learning
MDM 2009
(ICWL‘09), August 19-21, 2009, Aachen, Germany
Yiwei Cao
Matthias Jarke
– Call for participation
– Call for papers to Workshops
Ralf Klamma
Oscar Mendoza
Satish Srirama
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-CJK*-0509-15