File:WikidataCon 2017 - Using Shape Expressions for data quality and consistency in Wikidata.webm

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Original file ‎(WebM audio/video file, VP8/Vorbis, length 42 min 57 s, 1,024 × 576 pixels, 178 kbps overall, file size: 54.75 MB)

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English: * speakers: Andra Waagmeester, Katherine Thornton, Lucas Werkmeister, Gregory Stupp
  • abstract: As a truly open data infrastructure, community issues such as disagreement, bias, human error, vandalism, etc. manifest themselves on Wikidata. From a curator's perspective, it can be challenging at times to filter through the different Wikidata views while maintaining one's own definitions and standards. Whether stemming from benign differences in opinions/views, or more malignant forms of vandalism or the introduction of low quality evidence, public databases face extra challenges in providing data quality in the public domain. Here we propose the use of W3C Shape Expressions (ShEx: https://shexspec.github.io/primer/) as a toolkit to model, validate and filter the interactions between designated public resources and Wikidata. It is a language for expressing constraints on RDF graph and a schema language for graphs. Wikidata is fundamentally a graph, so ShEx can be used to validate Wikidata items, communicate expected graph patterns, and generate user interfaces and interface code. It will also allow us to efficiently: Exchange and understand each other’s models Express a shared model of our footprint in Wikidata Agilely develop and test that model against sample data and evolve Catch disagreement, inconsistencies or errors efficiently at input time or in batch inspections.
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Source Daniel Molkentin
Author camera: Daniel Molkentin

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Date/TimeThumbnailDimensionsUserComment
current21:45, 9 December 201742 min 57 s, 1,024 × 576 (54.75 MB)Milan Weyrauch (WMDE) (talk | contribs)User created page with UploadWizard

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Format Bitrate Download Status Encode time
VP9 480P 163 kbps Completed 10:26, 27 October 2018 19 min 35 s
Streaming 480p (VP9) Not ready Unknown status
VP9 360P 137 kbps Completed 10:20, 27 October 2018 13 min 36 s
Streaming 360p (VP9) Not ready Unknown status
VP9 240P 122 kbps Completed 10:16, 27 October 2018 9 min 42 s
Streaming 240p (VP9) 20 kbps Completed 21:49, 5 December 2023 2.0 s
WebM 360P 141 kbps Completed 22:18, 9 December 2017 16 min 57 s
Streaming 144p (MJPEG) 808 kbps Completed 06:45, 19 November 2023 53 s
Stereo (Opus) 75 kbps Completed 08:29, 24 November 2023 33 s
Stereo (MP3) 128 kbps Completed 06:45, 19 November 2023 50 s

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