Hi Everyone, After opening the Wikipedia image [1] on which our example is based, and then scrolling down, it says
"This work has been released into the public domain by its author, 345Kai at English Wikipedia. This applies worldwide. In some countries this may not be legally possible; if so: 345Kai grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law." So this particular Wikipedia figure is public domain. Does this settle the issue? Best, Gábor [1] https://en.wikipedia.org/wiki/PageRank#/media/File:PageRanks-Example.svg Bertty Contreras <[email protected]> ezt írta (időpont: 2021. okt. 26., K, 10:37): > > Hi Everybody, > > I reviewed the code and searched for a copy of the code and I was not able > to find it. Nevertheless, the piece of code that we can say that is > "copied" is the graph input[1] that we use in the test of Pagerank[2], > however, the "copied" part is [3] and [4]. Is it that copy? because we take > an image and we convert it to graph representation to process. > > we can modify the data. We used it because it is just a well known example. > > Best regards, > Bertty > > [1] https://en.wikipedia.org/wiki/PageRank#/media/File:PageRanks-Example.svg > [2] > https://github.com/apache/incubator-wayang/blob/main/wayang-tests-integration/code/test/java/org/apache/wayang/tests/WayangPlans.java#L573-L704 > [3] > https://github.com/apache/incubator-wayang/blob/main/wayang-tests-integration/code/test/java/org/apache/wayang/tests/WayangPlans.java#L576-L589 > [4] > https://github.com/apache/incubator-wayang/blob/main/wayang-tests-integration/code/test/java/org/apache/wayang/tests/WayangPlans.java#L706-L719 > > On Tue, Oct 26, 2021 at 9:50 AM Alexander Alten <[email protected]> wrote: > > > Heya Justin, > > > > Ya, we discussed this in our slack - but we have some inconsistency across > > the projects. PageRank is used in the exact same matter as we us in > > numerous projects, as example Spark, Flink. This causes confusion - I > > argued the same as you: > > "We used a piece of code which hasn't a proper license. As long as we use > > code from compatible projects and licenses everything is fine. We only have > > to mention this. But Justin said we copied from Wikipedia, which is a > > license issue” > > > > From Wikipedia [1] > > "Most of Wikipedia's text and many of its images are co-licensed under the > > Creative Commons Attribution-ShareAlike 3.0 Unported License (CC BY-SA) and > > the GNU Free Documentation License (GFDL) (unversioned, with no invariant > > sections, front-cover texts, or back-cover texts)." > > > > I reached to twitter - even they use PageRank in their own code [2]. > > > > What’s now the best solution to solve this? Also in view of the TLPs > > Spark, Flink ... > > > > Cheers, > > —Alex > > > > 1: https://en.wikipedia.org/wiki/Wikipedia:Copyrights > > 2: > > https://github.com/twitter/GraphJet/blob/master/graphjet-core/src/main/java/com/twitter/graphjet/algorithms/PageRank.java > > > > > On 26. Oct 2021, at 09:39, Justin Mclean <[email protected]> wrote: > > > > > > Hi, > > > > > > It's not the algorithm itself but what was copied from the wikipedia > > page. Note this comment in the code [1]: > > > "Get some graph data. Use the example from Wikipedia: > > https://en.wikipedia.org/wiki/PageRank"; > > > > > > Ask yourself this. What license is that example under? Is that > > compatible with the Apache license? > > > > > > Kind Regards, > > > Justin > > > > > > 1. > > ./wayang-tests-integration/code/test/java/org/apache/wayang/tests/WayangPlans.java > > > >
