Hershey, Pennsylvania
New York, New YorkBeijing, China
Improving the Quality of Linked Data Using Statistical Distributions

Improving the Quality of Linked Data Using Statistical Distributions

Heiko Paulheim (Data and Web Science Group, University of Mannheim, Mannheim, Germany) and Christian Bizer (Data and Web Science Group, University of Mannheim, Mannheim, Germany)
Copyright: © 2014 |Pages: 24
DOI: 10.4018/ijswis.2014040104
OnDemand:
(Individual Articles)
Available
$37.50
Current Special Offers
No Current Special Offers
TOTAL SAVINGS: $37.50

Abstract

Linked Data on the Web is either created from structured data sources (such as relational databases), from semi-structured sources (such as Wikipedia), or from unstructured sources (such as text). In the latter two cases, the generated Linked Data will likely be noisy and incomplete. In this paper, we present two algorithms that exploit statistical distributions of properties and types for enhancing the quality of incomplete and noisy Linked Data sets: SDType adds missing type statements, and SDValidate identifies faulty statements. Neither of the algorithms uses external knowledge, i.e., they operate only on the data itself. We evaluate the algorithms on the DBpedia and NELL knowledge bases, showing that they are both accurate as well as scalable. Both algorithms have been used for building the DBpedia 3.9 release: With SDType, 3.4 million missing type statements have been added, while using SDValidate, 13,000 erroneous RDF statements have been removed from the knowledge base.
Article Preview
Top

Data Quality Issues With Noisy And Incomplete Linked Data Sets

Data quality is not a single measure, but has multiple dimensions. Pipino et al. (2002) list several of those dimensions, ranging from accessibility to completeness. In addition, many of those dimensions cannot be assessed in a context-free manner, but depend on the task at hand, such as relevance. Thus, data quality is generally conceived as “fitness for use” (Wang et al., 1996), i.e., the capability of data to fit the requirements of a specific user given a certain use case.

Complete Article List

Search this Journal:
Reset
Volume 21: 1 Issue (2025)
Volume 20: 1 Issue (2024)
Volume 19: 1 Issue (2023)
Volume 18: 4 Issues (2022): 2 Released, 2 Forthcoming
Volume 17: 4 Issues (2021)
Volume 16: 4 Issues (2020)
Volume 15: 4 Issues (2019)
Volume 14: 4 Issues (2018)
Volume 13: 4 Issues (2017)
Volume 12: 4 Issues (2016)
Volume 11: 4 Issues (2015)
Volume 10: 4 Issues (2014)
Volume 9: 4 Issues (2013)
Volume 8: 4 Issues (2012)
Volume 7: 4 Issues (2011)
Volume 6: 4 Issues (2010)
Volume 5: 4 Issues (2009)
Volume 4: 4 Issues (2008)
Volume 3: 4 Issues (2007)
Volume 2: 4 Issues (2006)
Volume 1: 4 Issues (2005)
View Complete Journal Contents Listing