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The Quality of the XML Web

11 Pages Posted: 7 Jul 2018 Publication Status: Accepted

See all articles by Steven Grijzenhout

Steven Grijzenhout

University of Amsterdam - Intelligent Systems Laboratory Amsterdam (ISLA)

Maarten Marx

University of Amsterdam

Abstract

We collect evidence to answer the following question: Is the quality of the XML documents found on the Web sufficient to apply XML technology like XQuery, XPath and XSLT? XML collections from the Web have been previously studied statistically, but no detailed information about the quality of the XML documents on the Web is available to date. We address this shortcoming in this study. We gathered 180K XML documents from the Web. Their quality is surprisingly good; 85.4% is wellformed and 99.5% of all specified encodings is correct. Validity needs serious attention. Only 25% of all files contain a reference to a DTD or XSD, of which just one third is actually valid. Wellformedness errors and validity errors are studied in detail. Our study is well documented, easily repeatable and all data is publicly available [48][21]. This paves the way for a periodic quality assessment of the XML Web.

Keywords: Standardization, XML, XML Web, Schemas, Data Quality

Suggested Citation

Grijzenhout, Steven and Marx, Maarten, The Quality of the XML Web (2013). Journal of Web Semantics First Look 19_0_4, Available at SSRN: https://ssrn.com/abstract=3199002 or http://dx.doi.org/10.2139/ssrn.3199002

Steven Grijzenhout (Contact Author)

University of Amsterdam - Intelligent Systems Laboratory Amsterdam (ISLA) ( email )

Science Park 107
Amsterdam, 1098 XH
Netherlands

Maarten Marx

University of Amsterdam ( email )

Spui 21
Amsterdam, 1018 WB
Netherlands

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