Sciweavers

2850 search results - page 265 / 570
» Answering Queries using Humans, Algorithms and Databases
Sort
View
IDEAS
2002
IEEE
135views Database» more  IDEAS 2002»
15 years 9 months ago
On Implicate Discovery and Query Optimization
Boolean expression simplification is a well-known problem in the history of Computer Science. The problem of determining prime implicates from an arbitrary Boolean expression has...
Kristofer Vorwerk, G. N. Paulley
DBPL
2003
Springer
130views Database» more  DBPL 2003»
15 years 9 months ago
Attribute Grammars for Scalable Query Processing on XML Streams
We introduce the new notion of XML Stream Attribute Grammars (XSAGs). XSAGs are the first scalable query language for XML streams (running strictly in linear time with bounded mem...
Christoph Koch, Stefanie Scherzinger
PODS
2011
ACM
238views Database» more  PODS 2011»
14 years 6 months ago
Beyond simple aggregates: indexing for summary queries
Database queries can be broadly classified into two categories: reporting queries and aggregation queries. The former retrieves a collection of records from the database that mat...
Zhewei Wei, Ke Yi
WWW
2001
ACM
16 years 4 months ago
Efficient Acquisition of Web Data through Restricted Query Interfaces
A wealth of information is available on the Web. But often, such data are hidden behind form interfaces which allow only a restrictive set of queries over the underlying databases...
Cláudio T. Silva, Juliana Freire, Simon Bye...
ISMIR
2004
Springer
111views Music» more  ISMIR 2004»
15 years 9 months ago
Optimizing Measures Of Melodic Similarity For The Exploration Of A Large Folk Song Database
This investigation aims at finding an optimal way of measuring the similarity of melodies. The applicability for an automated analysis and classification was tested on a folk song...
Daniel Müllensiefen, Klaus Frieler