max planck institut
informatik
informatik
Max-Planck-Institut
für Informatik
Department 5: Databases
and Information Systems
Campus E1 4,
Room 404
66123 Saarbrücken
Germany
Email:
Get my email address via email
Phone:
+49 681 9325 5004
Fax: +49 681 9325 599
I am heading the research group on Scalable Management of Uncertain Data at Department 5 of the Max-Planck-Institut für Informatik.
| 2011 | R. Gemulla, P. J. Haas, Y. Sismanis, C. Teflioudi, F. Makari Large-Scale Matrix Factorization with Distributed Stochastic Gradient Descent. [pdf, slides] In NIPS 2011 Biglearn workshop, 2011. (best paper award) |
| R. Gemulla, E. Nijkamp, P. J. Haas, Y. Sismanis Large-Scale Matrix Factorization with Distributed Stochastic Gradient Descent. [pdf, slides] In KDD, pp. 69-77, 2011. |
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| K. Beyer, V. Ercegovac, R. Gemulla, A. Balmin, M. Eltabakh,
C.C. Kanne, F. Ozcan, E. Shekita Jaql: A Scripting Language for Large Scale Semistructured Data Analysis [pdf] In PVLDB (industrial track), 4(11), pp. 1272-1283, 2011. |
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| M. Y. Eltabakh, Y. Tian, F. Özcan, R. Gemulla, A. Krettek, J.
McPherson CoHadoop: Flexible Data Placement and Its Exploitation in Hadoop. [pdf] In PVLDB, 4(9), pp. 575-585, 2011. |
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| R. Gemulla, P. J. Haas, E. Nijkamp, Y. Sismanis Large-Scale Matrix Factorization with Distributed Stochastic Gradient Descent. [pdf] IBM Research Report RJ10481, March 2011. |
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| B. Schlegel, R. Gemulla, W. Lehner Memory-Efficient Frequent-Itemset Mining. [pdf] In EDBT, pp. 461-472, 2011. |
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| 2010 | S. Das, Y. Sismanis, K. S. Beyer, R. Gemulla, P. J. Haas,
J. McPherson. Ricardo: Integrating R and Hadoop. [pdf] In SIGMOD (industrial track), pp. 987-998, 2010. |
| B. Schlegel, R. Gemulla, W. Lehner. Fast Integer Compression using SIMD Instructions. [pdf] In DAMON, pp. 34-40, 2010. |
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| 2009 | K. Beyer, R. Gemulla. P. J. Haas, B. Reinwald, Y. Sismanis. Distinct-Value Synopses for Multiset Operations. [pdf] In Commun. ACM, 52(10), pp. 87-95, 2009. Technical perspective by Surajit Chaudhuri. |
| B. Schlegel, R. Gemulla, W. Lehner. k-Ary Search on Modern Processors. [pdf, slides] In DAMON, pp. 52-60, 2009. |
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| 2008 | R. Gemulla. Sampling Algorithms for Evolving Datasets. [pdf, summary, slides] Ph.D. thesis, Technische Universität Dresden, 2009. URL for citations: http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1224861856184-11644 |
| R. Gemulla, P. Rösch and W. Lehner. Linked Bernoulli Synopses: Sampling Along Foreign Keys. [pdf, slides] In SSDBM, pp. 6-23, 2008. |
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| R. Gemulla and W. Lehner. Sampling Time-Based Sliding Windows in Bounded Space. [pdf, slides] In SIGMOD, pp. 379-392, 2008. |
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| P. Rösch, R. Gemulla and W. Lehner. Designing Random Sample Synopses with Outliers. (Poster) [pdf, poster] In ICDE, pp. 1400-1402, 2008. |
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| 2007 | R. Gemulla, W. Lehner and P.J. Haas. Maintaining Bounded-Size Sample Synopses of Evolving Datasets. [pdf] In The VLDB Journal, Special Issue: Best Papers of VLDB 2006, pp. 173-201, 2007. |
| K. Beyer, P. J. Haas, B. Reinwald, Y. Sismanis and R. Gemulla. On Synopses for Distinct-Value Estimation Under Multiset Operations. [pdf, slides] In SIGMOD, pp. 199-210, 2007 |
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| R. Gemulla, W. Lehner and P. J. Haas. Maintaining Bernoulli Samples over Evolving Multisets. [pdf, slides] In PODS, pp. 93-102, 2007. |
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| 2006 | R. Gemulla, W. Lehner and P. J. Haas. A Dip in the Reservoir: Maintaining Sample Synopses of Evolving Datasets. [pdf, slides] In VLDB, pp. 595-606, 2006. |
| Klein, R. Gemulla, P. Rösch and W. Lehner. Derby/S: A DBMS for Sample-Based Query Answering. [pdf, poster1, poster2] In SIGMOD (demo), pp. 757-759, 2006. |
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| R. Gemulla and W. Lehner. Deferred Maintenance of Disk-Based Random Samples. [pdf, slides] In EDBT, pp. 423-441, 2006. |