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Summarizing semantic graphs: a survey

Šejla Čebirić, François Goasdoué, Haridimos Kondylakis, Dimitris Kotzinos, Ioana Manolescu, Georgia Troullinou, Mussab Zneika
2018 The VLDB journal  
Due to the complex structure of RDF graphs and their heterogeneity, the exploration and understanding tasks are significantly harder than in relational databases, where the schema can serve as a first  ...  We hope the survey will help readers understand this scientifically rich area, and identify the most pertinent summarization method for a variety of usage scenarios.  ...  Researchers", in the framework of the Operational Programme "Human Resources Development Program, Education and Life-long Learning" of the National Strategic Reference Framework (NSRF) 2014-2020.  ... 
doi:10.1007/s00778-018-0528-3 fatcat:5yphgy3jajcwxbt5oxshadv4oy

Visualization of Heterogeneous Data

Mike Cammarano, Xin Dong, Bryan Chan, Jeff Klingner, Justin Talbot, Alon Halevey, Pat Hanrahan
2007 IEEE Transactions on Visualization and Computer Graphics  
Existing systems for flexible visualization of this kind of data require manual specification of the possible visualization roles for each data attribute.  ...  Both the Resource Description Framework (RDF), used in the semantic web, and Maya Viz u-forms represent data as a graph of objects connected by labeled edges.  ...  By introducing a layer of search to mediate between the user's visualization specification and the actual RDF data, the user can request visualizations without having to know the schema in advance.  ... 
doi:10.1109/tvcg.2007.70617 pmid:17968065 fatcat:zv5jgudnwvdm5br4qzdhef5o7q

A common framework for syntactic annotation

Nancy Ide, Laurent Romary
2001 Proceedings of the 39th Annual Meeting on Association for Computational Linguistics - ACL '01  
It is widely recognized that the proliferation of annotation schemes runs counter to the need to re-use language resources, and that standards for linguistic annotation are becoming increasingly mandatory  ...  We show how the framework can contribute to comparative evaluation and merging of parser output and diverse syntactic annotation schemes.  ...  An XSLT script could be used to create a second XML document that includes the relations implicit in the embedding (e.g., the first embedded <struct> with category NP has relation "subject", the first  ... 
doi:10.3115/1073012.1073052 dblp:conf/acl/IdeR01 fatcat:zmetcvkajjfathxg3sjqduigvy

The semantic web as a newspaper media convergence facilitator

Roberto García, Ferran Perdrix, Rosa Gil, Marta Oliva
2008 Journal of Web Semantics  
Therefore, we have developed a generic XML Schema to OWL mapping, complemented with an XML to RDF one.  ...  Advanced computerised support is needed in order to cope with the new needs, which require that machines are aware of a greater part of the underlying semantics.  ...  Acknowledgements This work has been partly supported by the Spanish Ministry of Science and Education research project S5T -Scaleable semantic personalised search of spoken and written contents on the  ... 
doi:10.1016/j.websem.2008.01.002 fatcat:drtg7upmgjf7zl755ixg7m5woi

Enabling ad-hoc reuse of private data repositories through schema extraction

Lars Christoph Gleim, Md Rezaul Karim, Lukas Zimmermann, Oliver Kohlbacher, Holger Stenzhorn, Stefan Decker, Oya Beyan
2020 Journal of Biomedical Semantics  
Evaluation with four distinct datasets shows that a configurable amount of concise and task-relevant schema, closely describing the structure of the underlying data, was derived, enabling the schema introspection-assisted  ...  Circumventing limitations of previous systems, this paper proposes a configurable and automated schema extraction and publishing approach, which enables ad-hoc SPARQL query formulation against RDF triple  ...  The authors would like to thank the anonymous reviewers for their helpful comments and improvement suggestions.  ... 
doi:10.1186/s13326-020-00223-z pmid:32641124 fatcat:g5zqwvj63fgwfijajurlzunqsq

Semantic Portals for Cultural Heritage [chapter]

Eero Hyvönen
2009 Handbook on Ontologies  
Much of the semantic web content will be published using semantic information portals [31, 36] .  ...  The difficulty of finding and relating information in this kind of heterogenous content provision and data format environment creates an obstacle for end-users of cultural contents, and a challenge to  ...  (Tekes) and a consortium of 36 public organizations and companies.  ... 
doi:10.1007/978-3-540-92673-3_34 dblp:series/ihis/Hyvonen09 fatcat:wlxwj7sz5nefrg4aczjrkiokw4

Enabling ad-hoc reuse of private data repositories through schema extraction

Lars Christoph Gleim, Md Rezaul Karim, Lukas Zimmermann, Oliver Kohlbacher, Holger Stenzhorn, Stefan Decker, Oya Beyan
2020 Journal of Biomedical Semantics  
Evaluation with four distinct datasets shows that a configurable amount of concise and task-relevant schema, closely describing the structure of the underlying data, was derived, enabling the schema introspection-assisted  ...  RDF triple stores without requiring direct access to the private data.  ...  The authors would like to thank the anonymous reviewers for their helpful comments and improvement suggestions.  ... 
doi:10.18154/rwth-2020-08425 fatcat:vmwvu6fusjccxbp3e5kf5jhl3q

Benchmarking Knowledge-driven Zero-shot Learning [article]

Yuxia Geng, Jiaoyan Chen, Xiang Zhuang, Zhuo Chen, Jeff Z. Pan, Juan Li, Zonggang Yuan, Huajun Chen
2021 arXiv   pre-print
More importantly, we have conducted a comprehensive benchmarking study, with two general and state-of-the-art methods, two setting-specific methods and one interpretable method.  ...  Several kinds of external knowledge, such as text and attribute, have been widely investigated, but they alone are limited with incomplete semantics.  ...  The statistics of the resulting ontological schemas of NELL-ZS and Wiki-ZS are shown in Table 7 . Semantics in RDFS Semantics by RDFS vocabularies act as the backbone of the schema graph.  ... 
arXiv:2106.15047v2 fatcat:vfe4vdxlprcrtpcjshda7ofxtu

A Common XML-based Framework for Syntactic Annotations [article]

Nancy Ide, Laurent Romary (INRIA Lorraine - LORIA), Tomaz Erjavec
2009 arXiv   pre-print
It is widely recognized that the proliferation of annotation schemes runs counter to the need to re-use language resources, and that standards for linguistic annotation are becoming increasingly mandatory  ...  In this paper we provide an overview of the framework, demonstrate its applicability to syntactic annotation, and show how it can contribute to comparative evaluation of parser output and diverse syntactic  ...  Relations are encoded only when they appear explicitly in the original annotation; an XML schema specifies the relations implicit in the embedding (e.g., indicating that the first VP is the head, etc.)  ... 
arXiv:0909.2718v1 fatcat:zsfhdfikmje2bdrzdu6axxq3sm

That obscure object of desire: multimedia metadata on the Web, part 2

F. Nack, J. van Ossenbruggen, L. Hardman
2005 IEEE Multimedia  
We conclude with implications of the findings for future action with respect to the activities the community should take.  ...  Part I of this article provided our vision of a media-aware Semantic Web in the form of a business presentation scenario and derived from it a number of problems regarding the semantic content description  ...  Acknowledgments Part of the research described here was funded by the Dutch national Token2000/CHIME and NWO/NASH projects, and Ontoweb, a thematic network of the European Comission.  ... 
doi:10.1109/mmul.2005.12 fatcat:mbuqks5yjbgotcgq5kwxchh5xu

Visualizing large-scale RDF data using Subsets, Summaries, and Sampling in Oracle

Seema Sundara, Medha Atre, Vladimir Kolovski, Souripriya Das, Zhe Wu, Eugene Inseok Chong, Jagannathan Srinivasan
2010 2010 IEEE 26th International Conference on Data Engineering (ICDE 2010)  
The visualization scheme works with both asserted and inferred triples (generated using RDF(S) and OWL semantics).  ...  with a large class hierarchy including over 25,000 OWL classes, 5,000 properties, and 400,000 class-properties) demonstrates the effectiveness of our visualization scheme.  ...  A few notations are introduced to help in specifying the semantics of union, intersection, and difference operations on a hybrid graph.  ... 
doi:10.1109/icde.2010.5447795 dblp:conf/icde/SundaraAKDWCS10 fatcat:ayi2ojav6rctlfjin7bm7e62l4

Encoding Syntactic Annotation [chapter]

Nancy Ide, Laurent Romary
2003 Text, Speech and Language Technology  
The results have been incorporated into XCES (Ide, et al., 2000a), the XML instantiation of the Corpus Encoding Standard (Ide, 1998a,b), which provides a ready-made, standard encoding format together with  ...  same time enabling their representation in a "pivot" format that can serve as the basis for comparative evaluation, merging, and the development of reusable editing and processing tools.  ...  An XSLT script could be used to create a second XML document that includes the relations implicit in the embedding (e.g., the first embedded <struct> with category NP has relation "subject", the first  ... 
doi:10.1007/978-94-010-0201-1_16 fatcat:q6fkap6ckfhxrhum67pgnyzvqi

Towards integrating semantics of multi-media resources and processes in e-Learning

Weihong Huang, Emmanuel Eze, David Webster
2006 Multimedia Systems  
To bring in new forces to knowledge-oriented e-Learning, this paper addresses the semantic integration issue of multimedia resources and learning processes with theoretical learning supports in an integrated  ...  This framework supports intelligent e-Learning with a knowledge network for knowledge object visualization, an enhanced Kolb's learning cycle [31] to guide learning practices, and a learning health care  ...  Acknowledgements The authors are grateful to the anonymous reviewers of this paper for their insightful and valuable comments to make this paper a more solid literature piece.  ... 
doi:10.1007/s00530-005-0009-6 fatcat:fty3jvlbvrfwlgsgsgvd3d2mqq

MetaVex: Regulation Drafting Meets the Semantic Web [chapter]

Saskia van de Ven, Rinke Hoekstra, Radboud Winkels, Emile de Maat, Ádám Kollár
2008 Lecture Notes in Computer Science  
Currently almost all legislative bodies throughout Europe use general purpose word-processing software for the drafting of legal documents.  ...  This paper describes how the MetaLex regulation-drafting environment (MetaVex) aims to meet such requirements.  ...  METAVEX MetaVex is a platform independent open source editor, and shares a large part of its codebase with the Visual Editor for XML (Vex) 14 .  ... 
doi:10.1007/978-3-540-85569-9_3 fatcat:4hbg2dc7yzgm5jlrwk5t6flx34

ViSWeb - the Visual Semantic Web: unifying human and machine knowledge representations with Object-Process Methodology

Dov Dori
2004 The VLDB journal  
Since OPM is shown to be most adequate for the task, ViSWeb is developed as an OPMbased layer on top of XML/RDF/OWL to express knowledge visually and in natural language.  ...  The advantages of the ViSWeb approach include equivalent graphic-text knowledge representation, visual navigability, semantic sentence interpretation, specification of system dynamics, and complexity management  ...  A final RDF schema example and its OPM counterpart We conclude our examples with an example of an RDF schema and its OPM counterpart.  ... 
doi:10.1007/s00778-004-0120-x fatcat:2rjehpmwznh2vcmmcd5urjxpxi
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