A Bi-Level Bernoulli Scheme for Database Sampling
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\begin{bibtex} @inproceedings{DBLP:conf/sigmod/HaasK04, title={A Bi-Level Bernoulli Scheme for Database Sampling}, year={2004}, crossref={DBLP:conf/sigmod/2004}, booktitle={SIGMOD Conference}, url={http://www.informatik.uni-trier.de/~ley/db/conf/sigmod/sigmod2004.html#HaasK04}, pages={275-286}, ee={http://doi.acm.org/10.1145/1007568.1007601}, author={Peter J. Haas and Christian Koenig} }\end{bibtex}
