Ralf Klamma

social network analysis communities of practice community information systems technology enhanced learning role knowledge management rwth aachen university learning analytics multimedia requirements engineering personal learning environment sna web science workshop visualization 2011 2013 learning learning layers mpeg-7 sentiment analysis knowledge discovery multimedia semantics informal learning community learning analytics e-learning acis ectel call for papers workflow management organizational memories information systems business applications program widget 2012 xmpp mobile multimedia context ectel11 technology enhanced web virtual campfire data mining ple conference knowledge acquisition community data-management adaptive systems dynamic analysis web 20 social software web 2.0 competences responsive open learning environments semudate09 storytelling cloud computing rwth lab lifelong learning layers box communities gaming cross-media analysis non-linear storytelling seci computerscience augmented reality gamification ant networks disturbance serious games story telling social requirements engineering steg08 web-based learning topic mining context-aware uncertainty network poster social networks mobile computing etwinning tellnet semantic 2009 agency environments" "social chinese language learning "communities teachers "personal dynamic wikipedia analysis campfire virtual services systems sparql rdf social wiki personal environments management data service engineering requirements i poetry gamebased icwl09 educational technology ec-tel information systems (discipline) xml icwl design business process monitoring summer school flyer mobile learning teacher network paper europen schoolnet developer camp recommender programming competition self-regulated learning research 3d model open source hololens workplace learninng devops meta study empirical research web2.0 tagging collaborative video annotation boost role sdk open source software development dashboard web engineering expert identification semantic video annotation trust management hits sponsoring eu viusalization pattern-based analysis graph mediabase metadata organizational learning 2010 doctoral consortium wisma2010 multimedia metadata network patterns semudate09 mobile multimedia annotation information processing collaboration seci knowledge management transcriptivity communti analysis" theory" practice" telmap deliverable umic recommender system stcsn ieee social network widgets statistics social media analytics sigmod icde pods time series analysis vldb aachen digital library long tail learning user models collaborative filtering actornetwork