On 8/30/2012 5:51 PM, Nicolas Torzec wrote: > At Yahoo, for filtering and ranking nodes and relationships in this type of > knowledge graphs, we have been using co-occurrence in Web Search queries, > Flickr tags (especially for Places), Web pages, and tweets, and various time > frames for taking trends and buzziness into account. > > Overall, the best ranking factor is co-occurrence in Web Search queries. > Wikimedia query logs could be of huge help here if you can get access to some. > > Otherwise, you can still use Wikipedia page view statistics to order related > entities by popularity, and can even take trends into account. > > On a separate note, the DBpedia code is open source. Digging into it is > useful for understanding DBpedia AND Wikipedia data...
A couple of year ago we published some papers about how to "rank" pairs of DBpedia resources according to their relatedness. And for doing that we leverage on search engines (Google, Yahoo!, Bing), on a popular social tagging system (Delicious), on Wikipedia information and on the DBpedia graph structure. Here's a couple of papers about that: 1) Roberto Mirizzi, Azzurra Ragone, Tommaso Di Noia, Eugenio Di Sciascio. Ranking the Linked Data: The Case of DBpedia. Web Engineering. Lecture Notes in Computer Science Volume 6189, 2010, pp 337-354 http://rd.springer.com/chapter/10.1007/978-3-642-13911-6_23 2) Roberto Mirizzi, Azzurra Ragone, Tommaso Di Noia, Eugenio Di Sciascio. Semantic Wonder Cloud: Exploratory Search in DBpedia. Current Trends in Web Engineering. Lecture Notes in Computer Science Volume 6385, 2010, pp 138-149 http://rd.springer.com/chapter/10.1007/978-3-642-16985-4_13 If anyone is interested I can send them the PDF. regards, roberto > > > Nicolas. > > > PS: I have read about WikiNodes haven't tried it. Would be happy too :) > > > > On Aug 29, 2012, at 8:53 PM, Michael Douma <[email protected]> wrote: > >> @Nicolas, >> >> Yes, we are limiting sets. We have a radial layout, with limited screen real >> estate, so we have no intention to display 1000's of nodes. Just a dozen max >> per category should be enough for people to have something interesting to >> explore. We may use Wikipedia traffic volume to choose which subsets to >> display. >> >> @Tom: >> >> Thanks for your thoughts about comparing DBpedia and Freebase. >> >> Sorry our app is only iOS now. >> >> Yes, all browser-type apps (e.g., Wikipedia) are now 17+ rating. I'm all >> about free speech, but I'm actually supportive of parents/schools having a >> practical way to limit downloads that can display objectionable content. In >> practice I hope this is only enforced for young kids. Apple need policies >> which apply broadly, and it's not fair to hold Wikipedia to a different >> standard than any other broad-topic information database or browser. >> >> We actually have an additional profanity filter, but that did not help us >> get our 17+ rating lowered. >> >> @Kingsley: >> >> Our app will work offline, so we will need to create packages. We probably >> will not send users to DBpedia in realtime. Also, we are merging and >> massaging results. e.g., to filter from 1000's of hits to the top 10. >> >> @Anyone: >> >> If you'd like to see our WikiNodes app, and you have an iPad, send me a note >> off this list, and I can send you a promo code. This would be for the >> old/current Wikipedia app. Our new app is a bit different. >> >> >> >> >> Tom Morris wrote: >>> On Wed, Aug 29, 2012 at 11:22 AM, Michael Douma<[email protected]> wrote: >>> >>>> I have a question about using DBpedia properties. >>>> >>>> I'm working on an iPad app for visually browsing Wikipedia with radial >>>> tree layouts. My colleagues and I published a proof-of-concept app >>>> called 'WikiNodes': >>>> http://itunes.apple.com/us/app/wikinodes/id433834594?mt=8 >>>> >>>> We want to improve the layout and content of the app using DBPedia data. >>>> For example, for a primary node "Paris", a child node could be >>>> "Birthplace of", and then we'd list ~10 of the people with >>>> dbpedia-owl:birthPlace. >>> Is there more than one property used for this information? That >>> sounds like a very low number of instances. By comparison, Freebase >>> has 3583 people born there (which is still probably just a tiny >>> fraction of those in Wikipedia). >>> >>>> Where/how can we find some guidance on DBpedia properties, and whether >>>> to use them? -- e.g., a list of all the properties, their frequency of >>>> use, what they mean (if it's not obvious), and whether they are >>>> reliable or buggy? Does this exist, or should we extract statistics from >>>> the downloads? >>> I can't help with documentation, but one way to gauge reliability of >>> properties would to see how well DBpedia and Freebase correspond for >>> Wikipedia-based entries, since they're basically starting with the >>> same source data. Where there's large discrepancies, you'd probably >>> need to dig in to it further to figure out which one is more >>> reliable/representative. >>> >>>> Also, if this project catches the interest of any list members, I can >>>> tell you more about our project, as we'd welcome any insights, ideas or >>>> input on how to use DBpedia data for an app for the general public. >>> I'd be a lot more interested in your had an Android, Linux, or Windows >>> app that I could play with on one of my devices. :-) >>> >>> Tom >>> >>> p.s. Is Wikipedia really 17+? How does Apple enforce this on that >>> tiny portion of the web that they don't control? > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Dbpedia-discussion mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Dbpedia-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
