The Web of Data, including Linked Data and knowledge graphs, has seen tremendous growth recently. In addition, new forms of structured data have emerged in the form of Web markup, such as schema.org, and entity-centric data in Web tables. Considering these rich, heterogeneous and evolving data sources which cover a wide variety of domains, exploitation of Web Data becomes increasingly important in the context of various applications, including federated search, entity linking, question answering and fact verification. These applications require reliable information on dataset characteristics, including general metadata, quality features, statistical information, dynamics, licensing and provenance. The lack of a thorough understanding of the nature, scope and characteristics of data from particular sources limits their take-up and reuse, such that applications are often limited and focused on well-known reference datasets. The PROFILES workshop series aims at gathering approaches to analyse, describe and discover data sources - including but not limited to SPARQL endpoints - as a facilitator for applications and tasks such as query distribution, semantic search, entity retrieval and recommendation. PROFILES offers a highly interactive forum for researchers and practitioners bringing together experts in the fields of Semantic Web, Web Data, Semantic Search, Databases, NLP,IRandvariousapplicationdomains. The PROFILES '17 workshop is a continuation of the workshop series successfully started as PROFILES '14 - PROFILES '16 at ESWC 2014 - 2016. These workshops aim to gather innovative query and search approaches for large-scale, distributed and heterogeneous linked datasets in line with dedicated approaches to analyse, describe and discover endpoints, as an inherent task of query distribution and dataset recommendation. This year we have accepted four full papers and two short papers. We would like to take this opportunity to sincerely thank the authors for their invaluable and inspiring contributions to the workshops. Our sincere thanks are due
Preface to the program committee members for reviewing the submissions and ensuring the highqualityofourworkshopprogram.
We are also very grateful to the organisers of the ISWC 2017 conference, and in particular to the Workshops and Tutorials Chairs, Aidan Hogan and Valentina Presutti,fortheirsupportintheworkshoporganisation.
Sincere appreciation for his time and expertise goes to our keynote speaker Prof. Dr. Heiko Paulheim from the Data and Web Science Group, University of Mannheim, Germanyforhistalkentitled“TowardsKnowledgeGraphProfiling”.
(The PROFILES '17 workshop was co-organised by members of the KEYSTONE COST Action IC1302 on semantic KEYword-based Search on sTructured data sOurcEs and supported by the Data4UrbanMobility project funded by the Federal MinistryofEducationandResearch,Germany(BMBF,02K15A040).)
Organisation
ElenaDemidova,L3SResearchCenter,LeibnizUniversitätHannover,Germany StefanDietze,L3SResearchCenter,LeibnizUniversitätHannover,Germany JulianSzymański,GdańskUniversityofTechnology,Poland JohnBreslin,NationalUniversityofIrelandGalway,Ireland
MuhammadSaleem,InfAI,UniversityofLeipzig AndreasNürnberger,Otto-von-GuerickeUniversityofMagdeburg AlessandroAdamou,KnowledgeMediaInstitute,TheOpenUniversity EnricoDaga,TheOpenUniversity DmitryMouromtsev,ITMOUniversity,St.Petersburg BernardoPereiraNunes,PUC-Rio ThanassisTiropanisUniversityofSouthampton KonstantinTodorovLIRMM/UniversityofMontpellier TomHeath,Arup CharlieAbela,UniversityofMalta MarcoAntonioCasanova,PUC–Rio RaquelTrillo-Lado,UniversidaddeZaragoza SimonGottschalk,LeibnizUniversitätHannover RanYu,LeibnizUniversitätHannover Copyright © 2017 for the individual papers by the papers' authors. Copying permitted for private and academic purposes.Thisvolumeispublishedandcopyrightedbyitseditors