160 search results - page 18 / 32 » Structural characterizations of schema-mapping languages |
LICS
2005
IEEE
14 years 1 months ago
2005
IEEE
There are two main paradigms for querying semi structured data: regular path queries and XPath. The aim of this paper is to provide a synthesis between these two. This synthesis i...
CICLING
2003
Springer
14 years 27 days ago
2003
Springer
In setting up a formal system to specify a grammar formalism, the conventional (mathematical) wisdom is to start with primitives (basic primitive structures) as simple as possible...
WEBDB
2004
Springer
14 years 1 months ago
2004
Springer
On the Web, there is a pervasive use of XML to give lightweight semantics to textual collections. Such documentcentric XML collections require a query language that can gracefully...
IANDC
2006
13 years 7 months ago
2006
This paper studies efficient learning with respect to mind changes. Our starting point is the idea that a learner that is efficient with respect to mind changes minimizes mind cha...
PPDP
2010
Springer
13 years 6 months ago
2010
Springer
We show how to achieve typed and unambiguous declarative pattern matching on strings using regular expressions extended with a simple recording operator. We give a characterizatio...