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some unrefined ideas on
         recommendations
                              Davide Palmisano - WP3 meeting, 15/09/2009@VU

                                   giving a try to the black layout working largely
                                   offline...apologize for this crap presentation :)




Tuesday, September 15, 2009
a realistic scenario:

                      an instance of the Beancounter is running
                          for each user registered on it, we have:

                              a large RDF graph regarding user’s
                                 activities, friend relationships,
                                  geolocalization and more...


Tuesday, September 15, 2009
not exactly a coherent, meaningful
     and immediately usable user
                profile

                              but, for sure, something where mine
                                 interests, topics and user habits




Tuesday, September 15, 2009
not exactly a coherent, meaningful
     and immediately usable user
                profile

                              but, for sure, something where mine
                                 interests, topics and user habits



                                       “the treasury is there, you just need to
                                         know where to dig” - anonymous

Tuesday, September 15, 2009
Tuesday, September 15, 2009
Tuesday, September 15, 2009
Tuesday, September 15, 2009
in this case we can reasonably
                   claim that:


          <http://dpalmisano.myopenid.com> foaf:interest
          <http://dbpedia.org/resource/Category:Post-rock>


                              and then recommend him other
                                stuff with that SKOS subject
Tuesday, September 15, 2009
how to achieve this?


                              analogically to spiders of a traditional web
                               crawler we can imagine a set of profilers




Tuesday, September 15, 2009
how to achieve this?


                              analogically to spiders of a traditional web
                               crawler we can imagine a set of profilers


          according to a predefined set of rules
         they explore the links and produce a set
            of coherent triples stating explicit
                         interests



Tuesday, September 15, 2009
a rule like a SPARQL construct:

                construct {<http://
                dpalmisano.myopenid.com> foaf:interest ?skos}
                where { <http://dpalmisano.myopenid.com> ?
                r ?s. ?s skos:Subject ?skos }




Tuesday, September 15, 2009
a rule like a SPARQL construct:

                construct {<http://
                dpalmisano.myopenid.com> foaf:interest ?skos}
                where { <http://dpalmisano.myopenid.com> ?
                r ?s. ?s skos:Subject ?skos }


     and where is the statistical side of
          the hybrid algoritm?[1]


                                                [1] NoTube DoW
Tuesday, September 15, 2009
construct {<http://dpalmisano.myopenid.com>
              foaf:interest ?skos} where { <http://
              dpalmisano.myopenid.com> ?r ?s. ?s
              skos:Subject ?skos }


           trivially we could consider the number of
           incoming links of the SKOS subject ?skos
           starting from resources that are linked with
           <http://dpalmisano.myopenid.com>

                              an higher number leads to a more enforced
                              foaf:interest ?skos
Tuesday, September 15, 2009
from a technology perspective


                              Hadoop could be a reasonable choice

                              the links discovery is a pure batch
                              process that needs heavy computations

                              Hadoop is mature enough to be
                              experimented within NoTube



Tuesday, September 15, 2009

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some unrefined ideas on recommendations

  • 1. some unrefined ideas on recommendations Davide Palmisano - WP3 meeting, 15/09/2009@VU giving a try to the black layout working largely offline...apologize for this crap presentation :) Tuesday, September 15, 2009
  • 2. a realistic scenario: an instance of the Beancounter is running for each user registered on it, we have: a large RDF graph regarding user’s activities, friend relationships, geolocalization and more... Tuesday, September 15, 2009
  • 3. not exactly a coherent, meaningful and immediately usable user profile but, for sure, something where mine interests, topics and user habits Tuesday, September 15, 2009
  • 4. not exactly a coherent, meaningful and immediately usable user profile but, for sure, something where mine interests, topics and user habits “the treasury is there, you just need to know where to dig” - anonymous Tuesday, September 15, 2009
  • 8. in this case we can reasonably claim that: <http://dpalmisano.myopenid.com> foaf:interest <http://dbpedia.org/resource/Category:Post-rock> and then recommend him other stuff with that SKOS subject Tuesday, September 15, 2009
  • 9. how to achieve this? analogically to spiders of a traditional web crawler we can imagine a set of profilers Tuesday, September 15, 2009
  • 10. how to achieve this? analogically to spiders of a traditional web crawler we can imagine a set of profilers according to a predefined set of rules they explore the links and produce a set of coherent triples stating explicit interests Tuesday, September 15, 2009
  • 11. a rule like a SPARQL construct: construct {<http:// dpalmisano.myopenid.com> foaf:interest ?skos} where { <http://dpalmisano.myopenid.com> ? r ?s. ?s skos:Subject ?skos } Tuesday, September 15, 2009
  • 12. a rule like a SPARQL construct: construct {<http:// dpalmisano.myopenid.com> foaf:interest ?skos} where { <http://dpalmisano.myopenid.com> ? r ?s. ?s skos:Subject ?skos } and where is the statistical side of the hybrid algoritm?[1] [1] NoTube DoW Tuesday, September 15, 2009
  • 13. construct {<http://dpalmisano.myopenid.com> foaf:interest ?skos} where { <http:// dpalmisano.myopenid.com> ?r ?s. ?s skos:Subject ?skos } trivially we could consider the number of incoming links of the SKOS subject ?skos starting from resources that are linked with <http://dpalmisano.myopenid.com> an higher number leads to a more enforced foaf:interest ?skos Tuesday, September 15, 2009
  • 14. from a technology perspective Hadoop could be a reasonable choice the links discovery is a pure batch process that needs heavy computations Hadoop is mature enough to be experimented within NoTube Tuesday, September 15, 2009