784 search results - page 32 / 157 » Histogram-based search: A comparative study |
ICDE
2011
IEEE
12 years 11 months ago
2011
IEEE
—Despite the proliferation of work on XML keyword query, it remains open to support keyword query over probabilistic XML data. Compared with traditional keyword search, it is far...
SSDBM
2002
IEEE
14 years 9 days ago
2002
IEEE
In this paper, we study the effects of compression on bitmap indexes. The main operations on the bitmaps during query processing are bitwise logical operations such as AND, OR, N...
ACMSE
2006
ACM
14 years 1 months ago
2006
ACM
Classic results in the theory of regular languages show that the problem of converting an NFA (nondeterministic finite automaton) into a minimal equivalent NFA is NP-hard, even f...
WEBI
2010
Springer
13 years 5 months ago
2010
Springer
A query burst is a period of heightened interest of users on a topic which yields a higher frequency of the search queries related to it. In this paper we examine the behavior of s...
CEC
2008
IEEE
14 years 1 months ago
2008
IEEE
—Evolutionary gradient search is a hybrid algorithm that exploits the complementary features of gradient search and evolutionary algorithm to achieve a level of efficiency and r...