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CIKM
2005
Springer
14 years 1 months ago
Towards estimating the number of distinct value combinations for a set of attributes
Accurately and efficiently estimating the number of distinct values for some attribute(s) or sets of attributes in a data set is of critical importance to many database operation...
Xiaohui Yu, Calisto Zuzarte, Kenneth C. Sevcik
VLDB
1999
ACM
140views Database» more  VLDB 1999»
14 years 1 days ago
Combining Histograms and Parametric Curve Fitting for Feedback-Driven Query Result-size Estimation
This paper aims to improve the accuracy of query result-size estimations in query optimizers by leveraging the dynamic feedback obtained from observations on the executed query wo...
Arnd Christian König, Gerhard Weikum
DATE
2008
IEEE
148views Hardware» more  DATE 2008»
14 years 2 months ago
On Analysis and Synthesis of (n, k)-Non-Linear Feedback Shift Registers
— Non-Linear Feedback Shift Registers (NLFSRs) have been proposed as an alternative to Linear Feedback Shift Registers (LFSRs) for generating pseudo-random sequences for stream c...
Elena Dubrova, Maxim Teslenko, Hannu Tenhunen
WWW
2004
ACM
14 years 8 months ago
Anti-aliasing on the web
It is increasingly common for users to interact with the web using a number of different aliases. This trend is a doubleedged sword. On one hand, it is a fundamental building bloc...
Jasmine Novak, Prabhakar Raghavan, Andrew Tomkins
VLDB
2002
ACM
114views Database» more  VLDB 2002»
13 years 7 months ago
Tree Pattern Aggregation for Scalable XML Data Dissemination
With the rapid growth of XML-document traffic on the Internet, scalable content-based dissemination of XML documents to a large, dynamic group of consumers has become an important...
Chee Yong Chan, Wenfei Fan, Pascal Felber, Minos N...