[Wikidata] Comparison of Wikidata, DBpedia, and Freebase (draft and invitation)

Hi all, as promised, now that I am back from my trip, here's my draft of the comparison of Wikidata, DBpedia, and Freebase. It is a draft, it is obviously potentially biased given my background, etc., but I hope that we can work on it together to get it into a good shape. Markus, amusingly I took pretty much the same example that you went for, the parent predicate. So yes, I was also surprised by the results, and would love to have Sebastian or Kingsley look into it and see if I conducted it fairly. SJ, Andra, thanks for offering to take a look. I am sure you all can contribute your own unique background and make suggestions on how to improve things and whether the results ring true. Marco, I totally agree with what you said - the project has stalled, and there is plenty of opportunity to harvest more data from Freebase and bring it to Wikidata, and this should be reignited. Sebastian, I also agree with you, and the numbers do so too, the same is true with the extraction results from DBpedia. Sebastian, Kingsley, I tried to describe how I understand DBpedia, and all steps should be reproducible. As it seems that the two of you also have to discuss one or the other thing about DBpedia's identity, I am relieved that my confusion is not entirely unjustified. So I tried to use both the last stable DBpedia release as well as a new-style DBpedia fusion dataset for the comparison. But I might have gotten the whole procedure wrong. I am happy to be corrected. On Sat, Sep 28, 2019 at 12:28 AM <hellmann(a)informatik.uni-leipzig.de> wrote: there. We don't Potentially, not a bad idea, but we don't do that. Everyone, this is the first time I share a Colab notebook, and I have no idea if I did it right. So any feedback of the form "oh you didn't switch on that bit over here" or "yes, this works, thank you" is very welcome, because I have no clue what I am doing :) Also, I never did this kind of analysis so transparently, which is kinda both totally cool and rather scary, because now you can all see how dumb I am :) So everyone is invited to send Pull Requests (I guess that's how this works?), and I would love for us to create a result together that we agree on. I see the result of this exercise to be potentially twofold: 1) a publication we can point people to who ask about the differences between Wikidata, DBpedia, and Freebase 2) to reignite or start projects and processes to reduce these differences So, here is the link to my Colab notebook: https://github.com/vrandezo/colabs/blob/master/Comparing_coverage_and_accur… Ideally, the third goal could be to get to a deeper understanding of how these three projects relate to each other - in my point of view, Freebase is dead and outdated, Wikidata is the core knowledge base that anyone can edit, and DBpedia is the core project to weave value-adding workflows on top of Wikidata or other datasets from the linked open data cloud together. But that's just a proposal. Cheers, Denny On Sat, Sep 28, 2019 at 12:28 AM <hellmann(a)informatik.uni-leipzig.de> wrote: