Ralf Schenkel

Krisztian Balog, David Carmel, Arjen P. de Vries, Daniel M. Herzig, Peter Mika, Haggai Roitman, Ralf Schenkel, Pavel Serdyukov, Duc Thanh Tran: The first joint international workshop on entity-oriented and semantic search (JIWES). SIGIR Forum 46(2): 87-94 (2012)

Andreas Broschart, Ralf Schenkel: High-performance processing of text queries with tunable pruned term and term pair indexes. ACM Trans. Inf. Syst. 30(1): 5 (2012)

Tom Crecelius, Ralf Schenkel: Pay-as-you-go maintenance of precomputed nearest neighbors in large graphs. CIKM 2012: 952-961

Steffen Metzger, Michael Stoll, Katja Hose, Ralf Schenkel: LUKe and MIKe: learning from user knowledge and managing interactive knowledge extraction. CIKM 2012: 2671-2673

Christian Pölitz, Ralf Schenkel: Ranking under Tight Budgets. DEXA Workshops 2012: 161-165

Avishek Anand, Srikanta J. Bedathur, Klaus Berberich, Ralf Schenkel: Index maintenance for time-travel text search. SIGIR 2012: 235-244

Besnik Fetahu, Ralf Schenkel: Retrieval evaluation on focused tasks. SIGIR 2012: 1135-1136

Katja Hose, Ralf Schenkel: Towards benefit-based RDF source selection for SPARQL queries. SWIM 2012: 2

Andreas Harth, Katja Hose, Ralf Schenkel: Database techniques for linked data management. SIGMOD Conference 2012: 597-600

Andreas Schwarte, Peter Haase, Michael Schmidt, Katja Hose, Ralf Schenkel: An Experience Report of Large Scale Federations. CoRR abs/1210.5403 (2012)

Luis Galarraga, Katja Hose, Ralf Schenkel: Partout: A Distributed Engine for Efficient RDF Processing. CoRR abs/1212.5636 (2012)

Theo Härder, Ralf Schenkel: Editorial. Datenbank-Spektrum 11(1): 1-4 (2011)

David Alexander, Paavo Arvola, Thomas Beckers, Patrice Bellot, Timothy Chappell, Christopher M. De Vries, Antoine Doucet, Norbert Fuhr, Shlomo Geva, Jaap Kamps, Gabriella Kazai, Marijn Koolen, Sangeetha Kutty, Monica Landoni, Véronique Moriceau, Richi Nayak, Ragnar Nordlie, Nils Pharo, Eric SanJuan, Ralf Schenkel, Andrea Tagarelli, Xavier Tannier, James A. Thom, Andrew Trotman, Johanna Vainio, Qiuyue Wang, Chen Wu: Report on INEX 2010. SIGIR Forum 45(1): 2-17 (2011)

Jaap Kamps, Jussi Karlgren, Ralf Schenkel: Report on the third workshop on exploiting semantic annotations in information retrieval (ESAIR). SIGIR Forum 45(1): 33-41 (2011)

Steffen Metzger, Shady Elbassuoni, Katja Hose, Ralf Schenkel: S3K: seeking statement-supporting top-K witnesses. CIKM 2011: 37-46

Haggai Roitman, Ralf Schenkel, Marko Grobelnik: Search and mining entity-relationship data. CIKM 2011: 2639-2640

Andreas Schwarte, Peter Haase, Katja Hose, Ralf Schenkel, Michael Schmidt: FedX: A Federation Layer for Distributed Query Processing on Linked Open Data. ESWC (2) 2011: 481-486

Marcin Sydow, Mariusz Pikula, Ralf Schenkel: To Diversify or Not to Diversify Entity Summaries on RDF Knowledge Graphs? ISMIS 2011: 490-500

Katja Hose, Ralf Schenkel, Martin Theobald, Gerhard Weikum: Database Foundations for Scalable RDF Processing. Reasoning Web 2011: 202-249

Andreas Schwarte, Peter Haase, Katja Hose, Ralf Schenkel, Michael Schmidt: FedX: Optimization Techniques for Federated Query Processing on Linked Data. International Semantic Web Conference (1) 2011: 601-616

Avishek Anand, Srikanta J. Bedathur, Klaus Berberich, Ralf Schenkel: Temporal index sharding for space-time efficiency in archive search. SIGIR 2011: 545-554

Christian Pölitz, Ralf Schenkel: Learning to rank under tight budget constraints. SIGIR 2011: 1173-1174

Andreas Broschart, Ralf Schenkel: A novel hybrid index structure for efficient text retrieval. SIGIR 2011: 1175-1176

Shlomo Geva, Jaap Kamps, Ralf Schenkel, Andrew Trotman (Eds.): Comparative Evaluation of Focused Retrieval - 9th International Workshop of the Inititative for the Evaluation of XML Retrieval, INEX 2010, Vugh, The Netherlands, December 13-15, 2010, Revised Selected Papers. Lecture Notes in Computer Science 6932, Springer 2011, isbn 978-3-642-23576-4

Ralf Schenkel, Benno Stein: Editorial. Datenbank-Spektrum 10(1): 5 (2010)

Shady Elbassuoni, Maya Ramanath, Ralf Schenkel, Gerhard Weikum: Searching RDF Graphs with SPARQL and Keywords. IEEE Data Eng. Bull. 33(1): 16-24 (2010)

Shady Elbassuoni, Katja Hose, Steffen Metzger, Ralf Schenkel: ROXXI: Reviving witness dOcuments to eXplore eXtracted Information. PVLDB 3(2): 1589-1592 (2010)

Thomas Beckers, Patrice Bellot, Gianluca Demartini, Ludovic Denoyer, Christopher M. De Vries, Antoine Doucet, Khairun Nisa Fachry, Norbert Fuhr, Patrick Gallinari, Shlomo Geva, Wei Chi Huang, Tereza Iofciu, Jaap Kamps, Gabriella Kazai, Marijn Koolen, Sangeetha Kutty, Monica Landoni, Miro Lehtonen, Véronique Moriceau, Richi Nayak, Ragnar Nordlie, Nils Pharo, Eric SanJuan, Ralf Schenkel, Xavier Tannier, Martin Theobald, James A. Thom, Andrew Trotman, Arjen P. de Vries: Report on INEX 2009. SIGIR Forum 44(1): 38-57 (2010)

Gerhard Weikum, Srikanta J. Bedathur, Ralf Schenkel: Temporal Knowledge for Timely Intelligence. BIRTE 2010: 1-6

Avishek Anand, Srikanta J. Bedathur, Klaus Berberich, Ralf Schenkel: Efficient temporal keyword search over versioned text. CIKM 2010: 699-708

Jaap Kamps, Jussi Karlgren, Ralf Schenkel: Third workshop on exploiting semantic annotations in information retrieval (ESAIR): CIKM 2010 workshop. CIKM 2010: 1975-1976

Ralf Schenkel: Temporal Shingling for Version Identification in Web Archives. ECIR 2010: 508-519

Omar Alonso, Ralf Schenkel, Martin Theobald: Crowdsourcing Assessments for XML Ranked Retrieval. ECIR 2010: 602-606

Andreas Broschart, Klaus Berberich, Ralf Schenkel: Evaluating the Potential of Explicit Phrases for Retrieval Quality. ECIR 2010: 623-626

Marcin Sydow, Mariusz Pikula, Ralf Schenkel: DIVERSUM: Towards diversified summarisation of entities in knowledge graphs. ICDE Workshops 2010: 221-226

Marcin Sydow, Mariusz Pikula, Ralf Schenkel, Adam Siemion: Entity Summarisation with Limited Edge Budget on Knowledge Graphs. IMCSIT 2010: 513-516

Paavo Arvola, Shlomo Geva, Jaap Kamps, Ralf Schenkel, Andrew Trotman, Johanna Vainio: Overview of the INEX 2010 Ad Hoc Track. INEX 2010: 1-32

Andreas Broschart, Ralf Schenkel: MMCI at the TREC 2010 Web Track. TREC 2010

Jaap Kamps, Jussi Karlgren, Ralf Schenkel (Eds.): Proceedings of the third workshop on Exploiting Semantic Annotations in Information Retrieval, ESAIR 2010, Toronto, Ontario, Canada, October 30, 2010. ACM 2010, isbn 978-1-4503-0372-9

Thomas Neumann, Matthias Bender, Sebastian Michel, Ralf Schenkel, Peter Triantafillou, Gerhard Weikum: Distributed top-k aggregation queries at large. Distributed and Parallel Databases 26(1): 3-27 (2009)

Gianluca Demartini, Ludovic Denoyer, Antoine Doucet, Khairun Nisa Fachry, Patrick Gallinari, Shlomo Geva, Darren Wei Che Huang, Tereza Iofciu, Jaap Kamps, Gabriella Kazai, Marijn Koolen, Monica Landoni, Ragnar Nordlie, Nils Pharo, Ralf Schenkel, Martin Theobald, Andrew Trotman, Arjen P. de Vries, Alan Woodley, Jianhan Zhu: Report on INEX 2008. SIGIR Forum 43(1): 17-36 (2009)

Shady Elbassuoni, Maya Ramanath, Ralf Schenkel, Marcin Sydow, Gerhard Weikum: Language-model-based ranking for queries on RDF-graphs. CIKM 2009: 977-986

Michal Shmueli-Scheuer, Chen Li, Yosi Mass, Haggai Roitman, Ralf Schenkel, Gerhard Weikum: Best-Effort Top-k Query Processing Under Budgetary Constraints. ICDE 2009: 928-939

Shlomo Geva, Jaap Kamps, Miro Lehtonen, Ralf Schenkel, James A. Thom, Andrew Trotman: Overview of the INEX 2009 Ad Hoc Track. INEX 2009: 4-25

Ralf Schenkel, Martin Theobald: Overview of the INEX 2009 Efficiency Track. INEX 2009: 200-212

Andreas Broschart, Ralf Schenkel: Index Tuning for Efficient Proximity-Enhanced Query Processing. INEX 2009: 213-217

Martin Theobald, Ablimit Aji, Ralf Schenkel: TopX 2.0 at the INEX 2009 Ad-Hoc and Efficiency Tracks. INEX 2009: 218-228

Avishek Anand, Srikanta J. Bedathur, Klaus Berberich, Ralf Schenkel, Christos Tryfonopoulos: EverLast: a distributed architecture for preserving the web. JCDL 2009: 331-340

Ralf Schenkel, Martin Theobald: Integrated DB&IR Semi-Structured Text Retrieval. Encyclopedia of Database Systems 2009: 1543-1546

Ralf Schenkel: Locking Granularity and Lock Types. Encyclopedia of Database Systems 2009: 1641-1643

Amélie Marian, Ralf Schenkel, Martin Theobald: Ranked XML Processing. Encyclopedia of Database Systems 2009: 2325-2332

Ralf Schenkel, Tom Crecelius, Mouna Kacimi, Thomas Neumann, Josiane Xavier Parreira, Marc Spaniol, Gerhard Weikum: Social Wisdom for Search and Recommendation. IEEE Data Eng. Bull. 31(2): 40-49 (2008)

Tom Crecelius, Mouna Kacimi, Sebastian Michel, Thomas Neumann, Josiane Xavier Parreira, Ralf Schenkel, Gerhard Weikum: Making SENSE: socially enhanced search and exploration. PVLDB 1(2): 1480-1483 (2008)

Martin Theobald, Holger Bast, Debapriyo Majumdar, Ralf Schenkel, Gerhard Weikum: TopX: efficient and versatile top- k query processing for semistructured data. VLDB J. 17(1): 81-115 (2008)

Andreas Broschart, Ralf Schenkel: Effiziente Textsuche mit Positionsinformation. Grundlagen von Datenbanken 2008: 101-105

Matthias Bender, Tom Crecelius, Mouna Kacimi, Sebastian Michel, Thomas Neumann, Josiane Xavier Parreira, Ralf Schenkel, Gerhard Weikum: Exploiting social relations for query expansion and result ranking. ICDE Workshops 2008: 501-506

Andreas Broschart, Ralf Schenkel, Martin Theobald: Experiments with Proximity-Aware Scoring for XML Retrieval at INEX 2008. INEX 2008: 29-32

Martin Theobald, Ralf Schenkel: Overview of the INEX 2008 Efficiency Track. INEX 2008: 179-191

Martin Theobald, Mohammed AbuJarour, Ralf Schenkel: TopX 2.0 at the INEX 2008 Efficiency Track. INEX 2008: 224-236

Ralf Schenkel, Tom Crecelius, Mouna Kacimi, Sebastian Michel, Thomas Neumann, Josiane Xavier Parreira, Gerhard Weikum: Efficient top-k querying over social-tagging networks. SIGIR 2008: 523-530

Andreas Broschart, Ralf Schenkel: Proximity-aware scoring for XML retrieval. SIGIR 2008: 845-846

Tom Crecelius, Mouna Kacimi, Sebastian Michel, Thomas Neumann, Josiane Xavier Parreira, Ralf Schenkel, Gerhard Weikum: Social recommendations at work. SIGIR 2008: 884

Hanglin Pan, Ralf Schenkel, Gerhard Weikum: Fine-grained relevance feedback for XML retrieval. SIGIR 2008: 887

Thomas Neumann, Matthias Bender, Sebastian Michel, Ralf Schenkel, Peter Triantafillou, Gerhard Weikum: Optimizing Distributed Top-k Queries. WISE 2008: 337-349

Ralf Schenkel, Fabian M. Suchanek, Gjergji Kasneci: YAWN: A Semantically Annotated Wikipedia XML Corpus. BTW 2007: 277-291

Martin Theobald, Ralf Schenkel, Gerhard Weikum: TopX - Efficient and Versatile Top-k Query Process-ing for Text, Semistructured, and Structured Data. BTW 2007: 475-485

Andreas Broschart, Ralf Schenkel, Martin Theobald, Gerhard Weikum: TopX @ INEX 2007. INEX 2007: 49-56

Martin Theobald, Ralf Schenkel, Gerhard Weikum: The TopX DB&IR engine. SIGMOD Conference 2007: 1141-1143

Ralf Schenkel, Andreas Broschart, Seung-won Hwang, Martin Theobald, Gerhard Weikum: Efficient Text Proximity Search. SPIRE 2007: 287-299

Ralf Schenkel, Martin Theobald: Structural Feedback for Keyword-Based XML Retrieval. ECIR 2006: 326-337

Ralf Schenkel, Martin Theobald: Feedback-Driven Structural Query Expansion for Ranked Retrieval of XML Data. EDBT 2006: 331-348

Jens Graupmann, Ralf Schenkel: GeoSphereSearch: Context-Aware Geographic Web Search. GIR 2006

Martin Theobald, Andreas Broschart, Ralf Schenkel, Silvana Solomon, Gerhard Weikum: TopX - AdHoc Track and Feedback Task. INEX 2006: 233-242

Holger Bast, Debapriyo Majumdar, Ralf Schenkel, Martin Theobald, Gerhard Weikum: IO-Top-k at TREC 2006: Terabyte Track. TREC 2006

Holger Bast, Debapriyo Majumdar, Ralf Schenkel, Martin Theobald, Gerhard Weikum: IO-Top-k: Index-access Optimized Top-k Query Processing. VLDB 2006: 475-486

Ralf Schenkel, Anja Theobald, Gerhard Weikum: Semantic Similarity Search on Semistructured Data with the XXL Search Engine. Inf. Retr. 8(4): 521-545 (2005)

Ralf Schenkel, Anja Theobald, Gerhard Weikum: Efficient Creation and Incremental Maintenance of the HOPI Index for Complex XML Document Collections. ICDE 2005: 360-371

Martin Theobald, Ralf Schenkel, Gerhard Weikum: TopX and XXL at INEX 2005. INEX 2005: 282-295

Ralf Schenkel, Martin Theobald: Relevance Feedback for Structural Query Expansion. INEX 2005: 344-357

Martin Theobald, Ralf Schenkel, Gerhard Weikum: Efficient and self-tuning incremental query expansion for top-k query processing. SIGIR 2005: 242-249

Jens Graupmann, Ralf Schenkel, Gerhard Weikum: The SphereSearch Engine for Unified Ranked Retrieval of Heterogeneous XML and Web Documents. VLDB 2005: 529-540

Martin Theobald, Ralf Schenkel, Gerhard Weikum: An Efficient and Versatile Query Engine for TopX Search. VLDB 2005: 625-636

Jens Graupmann, Jun Cai, Ralf Schenkel: Automatic Query Refinement Using Mined Semantic Relations. WIRI 2005: 205-213

Ralf Schenkel: Transaktionen in föderierten Datenbanksystemen unter eingeschränkten Isolation-Levels. Saarland University 2004

Ralf Schenkel, Anja Theobald, Gerhard Weikum: HOPI: An Efficient Connection Index for Complex XML Document Collections. EDBT 2004: 237-255

Ralf Schenkel: FliX: A Flexible Framework for Indexing Complex XML Document Collections. EDBT Workshops 2004: 240-249

Minos N. Garofalakis, Ioana Manolescu, Marco Mesiti, George A. Mihaila, Ralf Schenkel, Bhavani M. Thuraisingham, Vasilis Vassalos: What's Next in XML and Databases? EDBT Workshops 2004: 318-324

Gerhard Weikum, Jens Graupmann, Ralf Schenkel, Martin Theobald: Towards a Statistically Semantic Web. ER 2004: 3-17

Hanglin Pan, Anja Theobald, Ralf Schenkel: Query Refinement by Relevance Feedback in an XML Retrieval System. ER 2004: 854-855

Kathrin Roberts, Frank Mücklich, Ralf Schenkel, Gerhard Weikum: An Information System for Material Microstructures. SSDBM 2004: 329-332

Martin Theobald, Gerhard Weikum, Ralf Schenkel: Top-k Query Evaluation with Probabilistic Guarantees. VLDB 2004: 648-659

Martin Theobald, Ralf Schenkel, Gerhard Weikum: Exploiting Structure, Annotation, and Ontological Knowledge for Automatic Classification of XML Data. WebDB 2003: 1-6

Ralf Schenkel, Anja Theobald, Gerhard Weikum: Ontology-Enabled XML Search. Intelligent Search on XML Data 2003: 119-131

Martin Theobald, Ralf Schenkel, Gerhard Weikum: Classification and Focused Crawling for Semistructured Data. Intelligent Search on XML Data 2003: 145-157

Henk M. Blanken, Torsten Grabs, Hans-Jörg Schek, Ralf Schenkel, Gerhard Weikum (Eds.): Intelligent Search on XML Data, Applications, Languages, Models, Implementations, and Benchmarks. Lecture Notes in Computer Science 2818, Springer 2003, isbn 3-540-40768-5

Ralf Schenkel, Gerhard Weikum: Integrating Snapshot Isolation into Transactional Federation. CoopIS 2000: 90-101

Ralf Schenkel, Gerhard Weikum: Taming the Tiger: How to Cope with Real Database Products in Transactional Federations for Internet Applications. GI-Workshop Internet-Datenbanken 2000: 13-29

Ralf Schenkel, Gerhard Weikum: Experiences with Building a Federated Transaction Manager based on CORBA OTS. EFIS 1999: 79-94

Ralf Schenkel, Gerhard Weikum, Norbert Weißenberg, Xuequn Wu: Federated Transaction Management with Snapshot Isolation. FMLDO - Selected Papers 1999: 1-25

Ralf Schenkel, Gerhard Weikum, Norbert Weißenberg, Xuequn Wu: Federated Transaction Management with Snapshot Isolation. FMLDO 1999: 139-158