Topic
Semantic Web
About: Semantic Web is a research topic. Over the lifetime, 26987 publications have been published within this topic receiving 534275 citations. The topic is also known as: Sem Web & SemWeb.
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07 May 2002
TL;DR: A new RDF query language called RQL is proposed, which is a typed functional language (a la OQL) and relies on a formal model for directed labeled graphs permitting the interpretation of superimposed resource descriptions by means of one or more RDF schemas.
Abstract: Real-scale Semantic Web applications, such as Knowledge Portals and E-Marketplaces, require the management of large volumes of metadata, i.e., information describing the available Web content and services. Better knowledge about their meaning, usage, accessibility or quality will considerably facilitate an automated processing of Web resources. The Resource Description Framework (RDF) enables the creation and exchange of metadata as normal Web data. Although voluminous RDF descriptions are already appearing, sufficiently expressive declarative languages for querying both RDF descriptions and schemas are still missing. In this paper, we propose a new RDF query language called RQL. It is a typed functional language (a la OQL) and relies on a formal model for directed labeled graphs permitting the interpretation of superimposed resource descriptions by means of one or more RDF schemas. RQL adapts the functionality of semistructured/XML query languages to the peculiarities of RDF but, foremost, it enables to uniformly query both resource descriptions and schemas. We illustrate the RQL syntax, semantics and typing system by means of a set of example queries and report on the performance of our persistent RDF Store employed by the RQL interpreter.
532 citations
TL;DR: A systematic review of approaches for assessing the quality of Linked Data, which unify and formalize commonly used terminologies across papers related to data quality and provides a comprehensive list of 18 quality dimensions and 69 metrics.
Abstract: The development and standardization of semantic web technologies has resulted in an unprecedented volume of data being published on the Web as Linked Data (LD). However, we observe widely varying data quality ranging from extensively curated datasets to crowdsourced and extracted data of relatively low quality. In this article, we present the results of a systematic review of approaches for assessing the quality of LD. We gather existing approaches and analyze them qualitatively. In particular, we unify and formalize commonly used terminologies across papers related to data quality and provide a comprehensive list of 18 quality dimensions and 69 metrics. Additionally, we qualitatively analyze the 30 core approaches and 12 tools using a set of attributes. The aim of this article is to provide researchers and data curators a comprehensive understanding of existing work, thereby encouraging further experimentation and development of new approaches focused towards data quality, specifically for LD.
531 citations
01 Jan 2005
TL;DR: In this paper, the authors present an approach for using the Semantic Web for e-Science: Inspiration, Incubation, Irritation, and Semantic Acceleration Helping Realize the semantic Web Vision or "The Practical Web".
Abstract: Invited Paper.- Using the Semantic Web for e-Science: Inspiration, Incubation, Irritation.- Semantic Acceleration Helping Realize the Semantic Web Vision or "The Practical Web".- Semantic Web Public Policy Challenges: Privacy, Provenance, Property and Personhood.- Research/Academic Track.- Constructing Complex Semantic Mappings Between XML Data and Ontologies.- Stable Model Theory for Extended RDF Ontologies.- Towards a Formal Verification of OWL-S Process Models.- Web Service Composition with Volatile Information.- A Large Scale Taxonomy Mapping Evaluation.- RDF Entailment as a Graph Homomorphism.- RitroveRAI: A Web Application for Semantic Indexing and Hyperlinking of Multimedia News.- Querying Ontologies: A Controlled English Interface for End-Users.- Semantic Browsing of Digital Collections.- Decentralized Case-Based Reasoning for the Semantic Web.- Finding and Ranking Knowledge on the Semantic Web.- Choreography in IRS-III - Coping with Heterogeneous Interaction Patterns in Web Services.- Bootstrapping Ontology Alignment Methods with APFEL.- A Strategy for Automated Meaning Negotiation in Distributed Information Retrieval.- On Applying the AGM Theory to DLs and OWL.- A General Diagnosis Method for Ontologies.- Graph-Based Inferences in a Semantic Web Server for the Cartography of Competencies in a Telecom Valley.- Ontology Design Patterns for Semantic Web Content.- Guidelines for Benchmarking the Performance of Ontology Management APIs.- Semantically Rich Recommendations in Social Networks for Sharing, Exchanging and Ranking Semantic Context.- On Partial Encryption of RDF-Graphs.- Seven Bottlenecks to Workflow Reuse and Repurposing.- On Logical Consequence for Collections of OWL Documents.- A Framework for Handling Inconsistency in Changing Ontologies.- Preferential Reasoning on a Web of Trust.- Resolution-Based Approximate Reasoning for OWL DL.- Reasoning with Multi-version Ontologies: A Temporal Logic Approach.- Piggy Bank: Experience the Semantic Web Inside Your Web Browser.- BRAHMS: A WorkBench RDF Store and High Performance Memory System for Semantic Association Discovery.- A Template-Based Markup Tool for Semantic Web Content.- Representing Web Service Policies in OWL-DL.- Information Modeling for End to End Composition of Semantic Web Services.- Searching Dynamic Communities with Personal Indexes.- RUL: A Declarative Update Language for RDF.- Ontologies Are Us: A Unified Model of Social Networks and Semantics.- OMEN: A Probabilistic Ontology Mapping Tool.- On the Properties of Metamodeling in OWL.- A Bayesian Network Approach to Ontology Mapping.- Ontology Change Detection Using a Version Log.- RelExt: A Tool for Relation Extraction from Text in Ontology Extension.- Containment and Minimization of RDF/S Query Patterns.- A String Metric for Ontology Alignment.- An Ontological Framework for Dynamic Coordination.- Introducing Autonomic Behaviour in Semantic Web Agents.- Combining RDF and Part of OWL with Rules: Semantics, Decidability, Complexity.- Benchmarking Database Representations of RDF/S Stores.- Towards Imaging Large-Scale Ontologies for Quick Understanding and Analysis.- Automatic Evaluation of Ontologies (AEON).- A Method to Combine Linguistic Ontology-Mapping Techniques.- Debugging OWL-DL Ontologies: A Heuristic Approach.- Rapid Benchmarking for Semantic Web Knowledge Base Systems.- Using Triples for Implementation: The Triple20 Ontology-Manipulation Tool.- A Little Semantic Web Goes a Long Way in Biology.- Provenance-Based Validation of E-Science Experiments.- Industrial Track.- Semantic Service Integration for Water Resource Management.- Towards a Killer App for the Semantic Web.- Enterprise Architecture Reference Modeling in OWL/RDF.- MediaCaddy - Semantic Web Based On-Demand Content Navigation System for Entertainment.- LKMS - A Legal Knowledge Management System Exploiting Semantic Web Technologies.- Definitions Management: A Semantics-Based Approach for Clinical Documentation in Healthcare Delivery.- Ubiquitous Service Finder Discovery of Services Semantically Derived from Metadata in Ubiquitous Computing.- Ontological Approach to Generating Personalized User Interfaces for Web Services.- On Identifying Knowledge Processing Requirements.- An Application of Semantic Web Technologies to Situation Awareness.- Task Knowledge Based Retrieval for Service Relevant to Mobile User's Activity.- Supporting Rule System Interoperability on the Semantic Web with SWRL.- Automated Business-to-Business Integration of a Logistics Supply Chain Using Semantic Web Services Technology.- A Semantic Search Engine for the International Relation Sector.- Gnowsis Adapter Framework: Treating Structured Data Sources as Virtual RDF Graphs.- Do Not Use This Gear with a Switching Lever! Automotive Industry Experience with Semantic Guides.- The Concept Object Web for Knowledge Management.- Semantic Web Challenge.- The Personal Publication Reader.- DynamicView: Distribution, Evolution and Visualization of Research Areas in Computer Science.- Oyster - Sharing and Re-using Ontologies in a Peer-to-Peer Community.- The FungalWeb Ontology: Semantic Web Challenges in Bioinformatics and Genomics.- CONFOTO: A Semantic Browsing and Annotation Service for Conference Photos.
530 citations
IBM1
TL;DR: It is argued that automated large scale semantic tagging of ambiguous content can bootstrap and accelerate the creation of the semantic web.
Abstract: This paper describes Seeker, a platform for large-scale text analytics, and SemTag, an application written on the platform to perform automated semantic tagging of large corpora. We apply SemTag to a collection of approximately 264 million web pages, and generate approximately 434 million automatically disambiguated semantic tags, published to the web as a label bureau providing metadata regarding the 434 million annotations. To our knowledge, this is the largest scale semantic tagging effort to date.We describe the Seeker platform, discuss the architecture of the SemTag application, describe a new disambiguation algorithm specialized to support ontological disambiguation of large-scale data, evaluate the algorithm, and present our final results with information about acquiring and making use of the semantic tags. We argue that automated large scale semantic tagging of ambiguous content can bootstrap and accelerate the creation of the semantic web.
527 citations
TL;DR: This paper gives an overview of approaches in this context to managing probabilistic uncertainty, possibilistic Uncertainty, and vagueness in expressive description logics for the Semantic Web.
522 citations