After some headaches I’ve found how to write dynamic SPARQL queries by passing parameters. For example, to query graph about resources collected last hour this code could be a first approach: #!/usr/bin/env python # Dynamic query (example code) from datetime import datetime import rdflib from namespaces import XSD def last_day(): """ get date [...]
Tags:
bit floating point,
datatype,
datatypes,
decimal numbers,
duration time,
dynamic,
dynamic query,
entity references,
PIMO,
query,
rdflib,
resource identifier,
schema definition language,
sparql,
sparql query,
time durations No Comments |
Read the rest of this entry »
Posted on 09/06/2009, 17:30, by
Tomás Vírseda, under
News.
After months of improving my skills with Python and PyGTK and reading documents about semantic web and its integration with Desktops Interfaces (like GNOME or KDE) a lot of improvements have been made in Vazaar. This is an overview of the current state of development. The presentation layer, the GUI, is more difficult to develop [...]
Tags:
bazaar,
beta development,
database records,
desktop application,
escritorio semántico,
launchpad,
nepomuk,
NFO,
NIE,
PIMO,
presentation layer,
pygtk,
python,
qout,
reading documents,
repository,
semantic web,
social semantic desktop,
web paradigm,
web semantica No Comments |
Read the rest of this entry »
Posted on 26/11/2007, 00:48, by
Tomás Vírseda, under
Nepomuk.
Llevo unos cuantos meses vacilando sobre qué ontología debería usar para organizar y armonizar toda la estructura interna de Vazaar. No es solo el hecho de darle un identificador a un fichero y adjuntar unos cuantos metadatos ala Dublin Core sino que debería estar basado en una ontología o conjunto de ontologías que definan toda [...]
Tags:
child rdf,
dc elements,
dc title,
description rdf,
filesystem,
lt xml,
NCAL,
NCO,
nepomuk,
NEXIF,
NFO,
NID3,
NIE,
NMO,
NRL,
ontología,
PIMO,
rdf description,
rdf syntax,
rdf xmlns,
resource file,
semantic desktop,
social semantic desktop,
utf 8 No Comments |
Read the rest of this entry »