Annotated Web Tables

<p>Data sets used for experimental evaluation in the related publication:</p> <p><em>Matching Web Tables with Knowledge Base Entities: From Entity Lookups to Entity Embeddings<br> International Semantic Web Conference (1) 2017: 260-277</em><br> <em>Vasilis Efthymiou Oktie Hassanzadeh Mariano Rodr&iacute;guez-Muro Vassilis Christophides</em></p> <p>The gold standard data sets are collections of web tables:</p> <p><strong>T2D</strong> (<strong>v1</strong>) consists of a schema-level gold standard of 1,748 Web tables, manually annotated with class- and property-mappings, as well as an entity-level gold standard of 233 Web tables.</p> <p><strong>Limaye</strong> consists of 400 manually annotated Web tables with entity-, class-, and property-level correspondences, where single cells (not rows) are mapped to entities. The corrected version of this gold standard is adapted to annotate rows with entities, from the annotations of the label column cells.</p> <p><strong>WikipediaGS </strong>is an instance-level gold standard developed from 485K Wikipedia tables, in which links in the label column are used to infer the annotation of a row to a DBpedia entity.</p> <p>&nbsp;</p> <p>Note on license: please refer to the README.txt. Data is derived from Wikipedia and other sources may have different licenses.</p> <p>Wikipedia contents can be shared under the terms of Creative Commons Attribution-ShareAlike License<br> as outlined on Wikipedia: <a href="https://en.wikipedia.org/wiki/Wikipedia:Reusing_Wikipedia_content">https://en.wikipedia.org/wiki/Wikipedia:Reusing_Wikipedia_content</a></p> <p>The correspondences of the T2D Gold standard is provided under the terms of the Apache license. The Web tables are provided according the same terms of use, disclaimer of warranties and limitation of liabilities that apply to the Common Crawl corpus. The DBpedia subset is licensed under the terms of the Creative Commons Attribution-ShareAlike License and the GNU Free Documentation License that applies to DBpedia.<br> Limaye gold standard is downloaded from: <a href="http://websail-fe.cs.northwestern.edu/TabEL/">http://websail-fe.cs.northwestern.edu/TabEL/</a> (download date: August 25, 2016). Please refer to the original website and the following paper for more details and citation information:<br> G. Limaye, S. Sarawagi, and S. Chakrabarti. Annotating and Searching Web Tables Using Entities, Types and Relationships. PVLDB, 3(1):1338&acirc;&euro;&ldquo;1347, 2010.</p> <p>THIS DATA IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.</p>