Bene, prometto che per un po’ la smettero’ si postare queste cose noiose! Ma giovedi’ (mercoledi’ ci va Federico e giovedi’ mi tocca sostituirlo) sarò allo stand di Net7 al Lu.Be.C. di Lucca.
Passate a trovarmi se avete tempo 
Non chiedetemi come e perchè, ma siamo stati selezionati tra le 30 piccole aziende più innovative dalla presidenza Francese dell’Unione Europea. Il 15 e 16 Settembre sono andato a Parigi alla conferenza EU Research for SMEs: Innovation in motion. Per chi non potesse proprio farne a meno, e il video della tavola rotonda a cui ho partecipato e un po’ di altri materiali sono disponibili sul sito della conferenza.
Giovedi 9 Ottobre alle 17, Net7 va (io non ci vado, cioè, dovevo andarci ma l’ho sapientemente appioppato a Federico… e mi dispiace un pò, amo Bergamo.) a BERGAMOSCIENZA. Ci sono stati un po’ di disguidi e quindi alla fine non siamo nel programma, ma ci saremo. Il workshop sarà una sorta di riedizione di quello tenuto in luglio a Milano: Digitalizzare e Valorizzare Patrimoni Culturali. Gli ospiti stranieri saranno di nuovo Denis e Ruven, dal C2RMF. Il mio collega Federico Ruberti parlerà di Semantic Web e Open Content nei beni culturali.
I needed to define a symmetrical habtm relation in my rails app and after searching for a while I found out there’s no option for that. So I came up with my own (dirty?) solution. It works both with MySQL and SQLite.
The migration:
create_table "people" do |t|
t.column :name, :string
end
create_table "people_people_married_with", :id => false do |t|
t.column :source_id, :integer, :null => false
t.column :target_id, :integer, :null => false
end
Add this to the person controller:
has_and_belongs_to_many :married_with, :class_name => "Person",
:join_table => "people_people_married_with", :foreign_key => "source_id",
:association_foreign_key => 'target_id',
:finder_sql => 'SELECT * FROM people INNER JOIN people_people_married_with ON
people.id = people_people_married_with.target_id
WHERE (people_people_married_with.source_id = #{id})
UNION
SELECT * FROM people INNER JOIN people_people_married_with ON
people.id = people_people_married_with.source_id
WHERE (people_people_married_with.target_id = #{id})'
Have fun
31
07
2008
PWSWCH Workshop at VAST 2008: call for papers
Posted by: barbz, in open access, digital libraries, the web, Semantic WebDear Collegues,
Within the VAST2008 conference and the activity of the EU COST action 32
(http://www.cost-a32.eu/), Working Group 2 (Software Development), we
are organizing a workshop entitled “Paving the way to a semantic web
for cultural heritage“, to be held in Braga, Portugal, on December 2nd
and 3rd 2008.
The Working Group 2 deals with the development of innovative, open
source applications and tools to enable the vision of an open, web
accessible scholarly community. You will find an overview of the four
development lines involved in WG 2 at this web page:
http://www.cost-a32.eu/wg-2.html
The Workshop aims to give the opportunity to senior expert in the field
to exchange their knowledge and to the developers involved in their
related projects, or simply interested in what we are developing, to
give their active contribution, propose their ideas or explore other
forms of collaboration.
The main topics of the workshop are:
- Ontology enrichment in the Cultural Heritage domain
- Semantic annotation of cultural resources (i.e. multimedia, 3D,
images, video)
- Semantic and ontology driven search engines
- Visualisation of complex semantically structured data
- Semantic access to web repository
- Semantic tools to grant interoperability between digital library
- Open Source tools and applications for semantic annotation and data
organisation.
The workshop will be partially founded in part by the COST office and
participants travel expenses and accommodations will be covered for some
participants.
If you are interested in participating, please submit a short abstract
where you briefly present your project and/or the way you would like to
contribute. Please send your abstract to
The submission deadline is September 8th, 2008. Additionally, please attach a short curriculum.
Feel free to extend this invitation to any member of your
research/development team you think might be interested in
participating.
Thank you for your interest and sorry for cross posting,
best regards,
Denis Pitzalis and Michele Barbera
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