228 search results - page 16 / 46 » Estimating Commit Sizes Efficiently |
JCM
2008
14 years 11 months ago
2008
In this paper we revisit the minimum mean square error (MMSE) pilot-aided channel estimation for broadband orthogonal frequency division multiplexing (OFDM) systems. The careful de...
APIN
2008
14 years 12 months ago
2008
This paper presents a data-driven approach for feature selection to address the common problem of dealing with high-dimensional data. This approach is able to handle the real-valu...
SIGMOD
2004
ACM
15 years 12 months ago
2004
ACM
Block-level sampling is far more efficient than true uniform-random sampling over a large database, but prone to significant errors if used to create database statistics. In this ...
SAC
2008
ACM
14 years 11 months ago
2008
ACM
Modern applications requiring spatial network processing pose many interesting query optimization challenges. In many cases, query processing depends on the corresponding graph si...
SIGMOD
1996
ACM
15 years 3 months ago
1996
ACM
Many commercial database systems maintain histograms to summarize the contents of relations and permit efficient estimation of query result sizes and access plan costs. Although s...