1. Web Science and Web Archive Research @ L3S Wolfgang Nejdl L3S Research Center Hannover, Germany

2. L3S @ Hannover

3. Computer Science and interdisciplinary research on all aspects of the Web Internet: Communication and Networks Information: Accessing information and knowledge on and through the Web Community: Supporting communities and groups on the Web, for research, education, production and entertainment Society: Requirements (technological, social, legal) for the Web Selected projects Web Science @ L3S LivingKnowledge: Diversity, opinion and bias on the Web CUbRIK: Searching by computers and humans Glocal: Event-based Search for Networked Media Privacy and clinical research Arcomem: Social Web & Archiving ForgetIT: Concise Preservation via Managed Forgetting

4. Spam Attack on Copts Gun running from Sudan Are we loosing the past of the web?

5. Library of Congress In April 2010 LoC and Twitter signed an agreement to archive all tweets since 2006 January 2013: It is clear that technology to allow for scholarship access to large data sets is lagging behind technology for creating and distributing such data. The Library is now pursuing partnerships to allow some limited access capability in reading rooms. German National Library Based on a law of June 22, 2006, the GNL should collect, enrich, catalog and archive Web publications Internet Archive Archiving the Web (3 Petabyte) since 1996 Access possible through the URL National Archives in Denmark, Portugal, etc. Relevant Projects @ L3S Web Archiving: LiWA, ARCOMEM, ForgetIT Web Search: PHAROS, CUBRIK Web Analysis: EUMSSI ERC Advanced Grant: ALEXANDRIA (2014 – 2018, 2.5 Mill. Euro) Cooperations German National Library, British Library, Internet Archive, Rutgers University, et al

6. ERC Grant ALEXANDRIA: Temporal Information Retrieval, Exploration and Analytics in Web Archives

7. ALEXANDRIA Test Beds Temporal Wikipedia English, German, Italian Wikipedia with all revisions Links to news archives (NYTimes, Times, Zeit) and web content Entity extraction and evolution, time and entity aware retrieval Academic Web Archive Academic content in Germany and UK BibSonomy and FreeSearch/DBLP data Time-aware entity extraction and linking, collaborative exploration and analytics Politics on the Web Political web sites: German and UK Web content (together with the British Library, German National Library and Internet Archive), Stanford US collections, new crawls, blogs, social media Social stream aggregation, collaborative analytics, as well as the other research questions

8. Web Observatory and eHumanities Multidisciplinary Research Questions: How to decide which Web content to capture, in order to enable relevant analysis by the eHumanities? How to document the selection and collection process? How can combining distributed Web Observatories help to cover multiple perspectives, disciplines and tasks (for selection)? How does the Web influence collective and individual remembering and language? How to systematically capture Web evolution and the evolution of observed processes and social realities? What are relevant multidisciplinary methods for a comprehensive analysis of Web content and the (changing) social realities reflected by it? How to deal with legal, commercial and privacy aspects of Web Archiving? Collective remembering & collective memory in the Web Age „Web Memory / Archive“ Web as reflection of social processes and practices, language, culture „Web (Archive) as Memory“ Web Observatory with focus on eHumanities „Web Gedächtnis“