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January 21, 2010

Using the ARQ SPARQL processor from the command line

With the Jena extensions.

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Posted by Bob DuCharme at 10:38 AM | | Comments (0) | TrackBacks (0)

January 4, 2010

Federated SPARQL queries

Using a Jena extension.

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Posted by Bob DuCharme at 1:07 PM | | Comments (1) | TrackBacks (0)

October 14, 2009

Blogging on TopQuadrant's Blog

In addition to here.

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Posted by Bob DuCharme at 7:59 PM | | Comments (1) | TrackBacks (0)

October 1, 2009

A rules language for RDF

Right under our noses.

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Posted by Bob DuCharme at 12:45 PM | | Comments (6) | TrackBacks (0)

September 9, 2009

Appreciating SPARQL CONSTRUCT more

Another way to get more out of your data.

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Posted by Bob DuCharme at 7:33 PM | | Comments (4) | TrackBacks (0)

August 27, 2009

Getting started with the TopQuadrant product line

A lot of great technology to learn about.

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Posted by Bob DuCharme at 8:38 PM | | Comments (0) | TrackBacks (1)

July 22, 2009

New developerWorks article: "Build Wikipedia query forms with semantic technology"

Build form-driven apps that let any user query DBpedia.

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Posted by Bob DuCharme at 10:07 AM | | Comments (0) | TrackBacks (0)

May 22, 2009

Writing about the Semantic Web

And Linked Data, and RDF, and RDFa, and SPARQL, and OWL, and...

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Posted by Bob DuCharme at 9:51 AM | | Comments (5) | TrackBacks (0)

April 8, 2009

Getting started with AllegroGraph

Via Python and via HTTP.

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Posted by Bob DuCharme at 4:50 PM | | Comments (4) | TrackBacks (0)

March 19, 2009

Getting started with Open Anzo

Don't miss the exciting command line video demo!

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Posted by Bob DuCharme at 7:55 PM | | Comments (1) | TrackBacks (0)

March 15, 2009

Some use cases to implement using SPARQL graphs

Or not; I'm open to suggestions.

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Posted by Bob DuCharme at 5:34 PM | | Comments (4) | TrackBacks (0)

March 10, 2009

Querying a set of named RDF graphs without naming the graphs

A big step toward using named graphs to track provenance.

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Posted by Bob DuCharme at 8:01 PM | | Comments (7) | TrackBacks (0)

March 1, 2009

Some questions about RDF named graphs

Trying to connect the data structure to real-world use.

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Posted by Bob DuCharme at 11:17 AM | | Comments (6) | TrackBacks (1)

January 8, 2009

Hey CNN, SPARQL isn't so difficult.

And like any programming language, it doesn't have to be convoluted.

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Posted by Bob DuCharme at 9:19 AM | | Comments (2) | TrackBacks (1)

December 26, 2008

A belated Christmas wish: a SPARQL endpoint for Digg RDF

Or consider it a lazy semweb wish.

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Posted by Bob DuCharme at 2:47 PM | | Comments (2) | TrackBacks (0)

December 22, 2008

Adding metadata value with Pellet

A nice new feature of Pellet 2.0.

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Posted by Bob DuCharme at 9:37 AM | | Comments (1)

December 1, 2008

SPARQL and live relational data

A little demo.

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Posted by Bob DuCharme at 5:19 PM | | Comments (2)

November 18, 2008

Linking information to "missing" information in SPARQL

Or, as the SQL people call it, doing outer joins.

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Posted by Bob DuCharme at 9:07 PM | | Comments (5)

November 7, 2008

SPARQL at the movies

Using SPARQL to answer a few questions that IMDB won't help much with.

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Posted by Bob DuCharme at 9:12 AM | | Comments (6)

October 29, 2008

Download SPARQL results directly into a spreadsheet

And then sort it, graph it, create new calculations... do all that stuff people do with spreadsheets.

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Posted by Bob DuCharme at 9:02 AM | | Comments (1)

October 20, 2008

SPARQL and relational databases: getting started

Asking about tables and columns and doing a simple join.

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Posted by Bob DuCharme at 5:24 PM | | Comments (4)

October 10, 2008

Learning more about SPARQL

Improving the Bart blackboard query.

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Posted by Bob DuCharme at 7:38 AM | | Comments (2) | TrackBacks (0)

September 30, 2008

Querying wiki/dbpedia for presidents' ages at inauguration

Easier than Jon Udell had thought.

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Posted by Bob DuCharme at 9:10 AM | | Comments (5)

September 23, 2008

Querying aggregated XBRL reports with SPARQL

Easier than I though it would be.

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Posted by Bob DuCharme at 9:15 AM | | Comments (3)

August 15, 2008

How you can explore a new set of linked data

Some great tips from Dean Allemang.

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Posted by Bob DuCharme at 9:50 AM | | Comments (3)

November 9, 2007

Querying DBpedia

And looking forward to more.

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Posted by Bob DuCharme at 9:53 AM | | Comments (3)

July 6, 2007

Semantic Web project ideas number 6

A form-driven front end to a SPARQL engine (as opposed to a SPARQL front end).

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Posted by Bob DuCharme at 9:27 AM | | Comments (3)