- From: Hugh Glaser <hugh@glasers.org>
- Date: Fri, 25 Jul 2014 00:07:07 +0100
- To: Mike Liebhold <mnl@well.com>
- Cc: Christian Bizer <chris@bizer.de>, public-lod@w3.org
Awesome achievement, Chris and team! Yes Mike, there is quite a lot missing from the LOD Cloud we have grown to know and love. Some of that is I understand because it says it only has stuff that allowed spidering (that is, robots.txt permitted it, etc.). (I notice this because it means everything I used to have in the LOC Cloud has disappeared!) However, the announcement message says that these sets will re-appear, so that is good. I don’t know if that applies to Freebase; and I think :baseKB is not there either, but maybe that doesn’t have any links. I have to say that it is not clear to me that it is good practice to refer to this image as the current/updated "version of the LOD Cloud diagram”. It seems that you didn’t understand the significance of this from Chris’ message, and I suspect that you will not be alone. Best Hugh On 24 Jul 2014, at 23:39, Mike Liebhold <mnl@well.com> wrote: > I recall earlier versions of the LOD Cloud diagram included freebase - I don't see it here, - or the google knowledge graph either. > > am I missing something? > > ?? > > > On 7/24/14, 5:18 AM, Christian Bizer wrote: >> Hi all, >> >> Max Schmachtenberg, Heiko Paulheim and I have crawled of the Web of Linked Data and have drawn an updated LOD Cloud diagram based on the results of the crawl. >> >> This diagram showing all linked datasets that our crawler managed to discover in April 2014 is found here: >> >> http://data.dws.informatik.uni-mannheim.de/lodcloud/2014/ISWC-RDB/LODCloudDiagram.png >> >> We also analyzed the compliance of the different datasets with the Linked Data best practices and a paper presenting the results of the analysis is found below. The paper will appear at ISWC 2014 in the Replication, Benchmark, Data and Software Track. >> >> http://dws.informatik.uni-mannheim.de/fileadmin/lehrstuehle/ki/pub/SchmachtenbergBizerPaulheim-AdoptionOfLinkedDataBestPractices.pdf >> >> The raw data used for our analysis is found on this page: >> >> http://data.dws.informatik.uni-mannheim.de/lodcloud/2014/ISWC-RDB/ >> >> Our crawler did discover 77 dataset that do not allow crawling via their robots.txt files and these datasets were not included into our analysis and are also not included in the current version of the LOD Cloud diagram. >> >> A list of these datasets is found at http://data.dws.informatik.uni-mannheim.de/lodcloud/2014/ISWC-RDB/tables/notCrawlableDatasets.tsv >> >> In order to give a comprehensive overview of all Linked Data sets that are currently online, we would like to draw another version of the LOD Cloud diagram including the datasets that our crawler has missed as well as the datasets that do not allow crawling. >> >> Thus, if you publish or know about linked datasets that are not in the diagram or in the list of not crawlable datasets yet, please: >> >> 1. Enter them into the datahub.io data catalog until August 8th. >> 2. Tag them in the catalog with the tag ‘lod’ (http://datahub.io/dataset?tags=lod) >> 3. Send an email to Max and Chris pointing us at the entry in the catalog. >> >> We will include all datasets into the updated version of the cloud diagram, that fulfill the following requirements: >> >> 1. Data items are accessible via dereferencable URIs. >> 2. The dataset sets at least 50 RDF links pointing at other datasets or at least one other dataset is setting 50 RDF links pointing at your dataset. >> >> Instructions on how to describe your dataset in the catalog are found here: >> >> https://www.w3.org/wiki/TaskForces/CommunityProjects/LinkingOpenData/DataSets/CKANmetainformation >> >> Please make sure that you include information about the RDF links pointing from your dataset into other datasets (field links: ) as well as a tag indicating the topical category of your dataset, so that we know how to include it into the diagram. >> Please also include an example URI from your dataset into the catalog. >> >> We will start to review the new datasets and to draw the updated version of the LOD cloud diagram after August 8th. >> So please point us at datasets to be included before this date. >> >> Cheers, >> >> Max, Heiko, and Chris >> >> >> -- >> Prof. Dr. Christian Bizer >> Data and Web Science Research Group >> Universität Mannheim, Germany >> chris@informatik.uni-mannheim.de >> www.bizer.de >> > > -- Hugh Glaser 20 Portchester Rise Eastleigh SO50 4QS Mobile: +44 75 9533 4155, Home: +44 23 8061 5652
Received on Thursday, 24 July 2014 23:08:28 UTC