Tuesday, October 20. 2009
I attended the BDA 2009 french conference in Namur, Belgium, from Tuesday 20 October to Wednesday 23 October 2009.
Friday, October 9. 2009
Presentation at GEMO annual seminar 2009 Posted by Alban Galland in Presentations at 09:00
Sunday, August 30. 2009
I attended the FOSAD2009 summer school in Bertinoro, Italy, from Sunday 30 August to Friday 4 September 2009.
Monday, August 24. 2009
I attended the VLDB 2009 conference in Lyon, France, from Monday 24 August to Thursday 27 August 2009.
Monday, June 29. 2009
I attended the SIGMOD/PODS 2009 conference in Providence, RI, USA, from Monday 29 June to Thursday 2 July 2009.
Friday, February 6. 2009
Presentation at GEMO seminar Posted by Alban Galland in Presentations at 14:00
I gave a presentation about my work on corroboration, February 6th, 2009, at the GEMO seminar
Title: On Corroboration and Trust
Abtract: On a decentralized network such as the web or a P2P network, the full information is the combination of the information given by all the nodes, which could be conflicting. Considering a set of views stating possibly conflicting facts and potential functional dependencies between facts, one could try to predict which facts are true and which ones are false. A natural idea, corroboration, is to take into account trust in the views. Without further information, trust is then recursively defined as how accurate a source is on the data. This talk will present our works on this problem, introducing a general probabilistic model and different corroboration algorithms and discussing experiments on synthetic and real-world data. Fayçal Hamdi: "Alignment-based Partitioning of Large-scale Ontologies" Ontology alignment is an important task for information integration systems that can make different resources, described by various and heterogeneous ontologies, interoperate. However very large ontologies have been built in some domains such as medicine or agronomy and the challenge now lays in scaling up alignment techniques that often perform complex tasks. In this talk, we will briefly present the state-of-the-art of partitioning methods and their limits when used to align ontologies. Then we will present two partitioning methods that take the alignment objective into account during the partitioning process. We will show how these methods transform the two ontologies to be aligned into two sets of blocks of a limited size and discuss the location of the elements of the two ontologies that have to be aligned according to each of them. Finally we will present some experimental results performed by the two methods on various pairs of ontologies.
Slides of the presentation:Corrob-GEMOSeminar-02-2009
Saturday, October 7. 2006
There are some notes for "AS-Apprentissage symbolique" taught by Jean-Gabriel Ganascia in Jussieu-Paris 6 (UPMC)
Where stay the knowledge? It's a process and we should build it from what we know (usually by abduction, ie. from general rules to particular one) or what we see (usually by induction, ie. from examples to general rules). So there are three ways for machine learning : the introspective way (machine builds new assertions from previous assertions by logic), the dialog way (machine communicates with somebody who knows already) and the observation way (machine learns from the data flow).
These notes explain the usual algorithms for Symbolic Learning.
Continue reading "Symbolic Learning"
Who is the author ?
My name is Alban Galland. You will find more personal information on my web site.
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