Building a Knowledge Graph for the History of Vienna with Semantic MediaWiki (original) (raw)
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Data, 2018
In the frame of an interdisciplinary research project that is concerned with data from heterogeneous domains, such as archaeology, cultural sciences, and the geosciences, a web-based Knowledge Base system was developed to facilitate and improve research collaboration between the project participants. The presented system is based on a Wiki that was enhanced with a semantic extension, which enables to store and query structured data within the Wiki. Using an additional open source tool for Schema–Driven Development of the data model, and the structure of the Knowledge Base, improved the collaborative data model development process, as well as semi-automation of data imports and updates. The paper presents the system architecture, as well as some example applications of a collaborative Wiki based Knowledge Base infrastructure.
Bringing the “Wiki-Way ” to the Semantic Web with
2008
Abstract. The Wiki and the Semantic Web can be compared as two different approaches to capturing knowledge, where the former trades away precise, explicit, and internally consistent semantics for speed and simplicity. Any attempt to bridge these two approaches has to either somehow reconcile these trades-off or make compromises one way or the other. This paper describes how Rhizome, an open source application framework for developing “Semantic Wiki ” applications, attempts to bridge these approaches. Rhizome includes a text formatting language called ZML whose syntax is similar to text formatting languages found in most Wikis but with enhancement to make it easy for users to express explicit and arbitrary semantics. Rhizome relies on “shredding”, a flexible framework for specifying rules for characterizing semi-structured content with RDF and providing an ontology that can precisely describe the relationship between the source content and the resulting statements. 1
Semantic MediaWiki in Operation: Experiences with Building a Semantic Portal
Lecture Notes in Computer Science, 2010
Wikis allow users to collaboratively create and maintain content. Semantic wikis, which provide the additional means to annotate the content semantically and thereby allow to structure it, experience an enormous increase in popularity, because structured data is more usable and thus more valuable than unstructured data. As an illustration of leveraging the advantages of semantic wikis for semantic portals, we report on the experience with building the AIFB portal based on Semantic MediaWiki. We discuss the design, in particular how free, wiki-style semantic annotations and guided input along a predefined schema can be combined to create a flexible, extensible, and structured knowledge representation. How this structured data evolved over time and its flexibility regarding changes are subsequently discussed and illustrated by statistics based on actual operational data of the portal. Further, the features exploiting the structured data and the benefits they provide are presented. Since all benefits have its costs, we conducted a performance study of the Semantic MediaWiki and compare it to MediaWiki, the nonsemantic base platform. Finally we show how existing caching techniques can be applied to increase the performance.
Introducing Wikidata to the Linked Data Web
The Semantic Web – ISWC 2014, 2014
Wikidata is the central data management platform of Wikipedia. By the efforts of thousands of volunteers, the project has produced a large, open knowledge base with many interesting applications. The data is highly interlinked and connected to many other datasets, but it is also very rich, complex, and not available in RDF. To address this issue, we introduce new RDF exports that connect Wikidata to the Linked Data Web. We explain the data model of Wikidata and discuss its encoding in RDF. Moreover, we introduce several partial exports that provide more selective or simplified views on the data. This includes a class hierarchy and several other types of ontological axioms that we extract from the site. All datasets we discuss here are freely available online and updated regularly.
The Vienna History Wiki – a Collaborative Knowledge Platform for the City of Vienna
2016
The Vienna City Archive and the Vienna City Library have joined forces with several other institutions in Vienna, Austria to create the "Wien Geschichte Wiki" (Vienna History Wiki), a knowledge platform for the history of Vienna with more than 34,000 articles and 120,000 visits per month. The wiki is powered by Semantic MediaWiki and serves not only as an online encyclopedia, based on a digitized printed publication for everybody to use and contribute to, but also as a central knowledge base for several administrative departments of the city administration. In a peerreview process, wiki edits are checked before they become visible. The paper highlights the unique aspects of the Vienna History Wiki related to content creation, governance structures and technology choices. A usage log analysis and an online survey have been carried out to gain first insights after six months of operation.
The Specifics of Semantic MediaWiki as a Collaborative Knowledge Sharing Environment
2014
The paper addresses one of the technological aspects of knowledge creation for innovations – namely supporting knowledge externalization and sharing in an organization by using semantic Web solutions. Specifically, we propose a semantic approach to preserve and leverage knowledge from individuals to the organization. Thus, the organization will be able to continually learn and improve based on its employees’ experience. We propose a solution based on the Semantic MediaWiki software platform, that would serve as a semantic middle layer facilitating access to innovative ideas and dispersed information resources. The presented case study from metallurgical industry aims to highlight the possibilities of the semantic integration of different data sources by using enterprise taxonomies to support innovative knowledge sharing among a community of knowledge workers.
SweetWiki: semantic web enabled technologies in Wiki
2006
Wikis are social web sites enabling a potentially large number of participants to modify any page or create a new page using their web browser. As they grow, wikis suffer from a number of problems (anarchical structure, large number of pages, aging navigation paths, etc.). We believe that semantic wikis can improve navigation and search. In SweetWiki we investigate the use of semantic web technologies to support and ease the lifecycle of the wiki. The very model of wikis was declaratively described: an OWL schema captures concepts such as WikiWord, wiki page, forward and backward link, author, etc. This ontology is then exploited by an embedded semantic search engine (Corese). In addition, SweetWiki integrates a standard WYSIWYG editor (Kupu) that we extended to support semantic annotation following the "social tagging" approach made popular by web sites such as flickr.com. When editing a page, the user can freely enter some keywords in an AJAX-powered textfield and an auto-completion mechanism proposes existing keywords by issuing SPARQL queries to identify existing concepts with compatible labels. Thus tagging is both easy (keyword-like) and motivating (real time display of the number of related pages) and concepts are collected as in folksonomies. To maintain and reengineer the folksonomy, we reused a web-based editor available in the underlying semantic web server to edit semantic web ontologies and annotations. Unlike in other wikis, pages are stored directly in XHTML ready to be served and semantic annotations are embedded in the pages themselves using RDF/A. If someone sends or copy a page, the annotations follow it, and if an application crawls the wiki site it can extract the metadata and reuse them.
Wiki Software and Facilities for Museums
MW2008: Museums and the Web 2008, 2008
The potential for the use of wikis by museums to aid collaboration between users is great. Wikis allow a virtual community to maintain and update information in a cooperative and convenient manner. This mini-workshop presents current wiki tools and facilities that are available on-line and suitable for use by museums for on-line collaboration and the building of virtual communities. The general concept of wikis is introduced, and the leading wiki on the Web, Wikipedia, is covered in a museum context. Major wiki software platforms are briefly mentioned, with pointers to further information. The use of external wiki facilities such as those provided by Wikia, a free community of wikis, is also presented. Alternative wiki facilities are briefly compared. A selection of existing examples of museum-related wikis is surveyed, including comments on their features in a wider context. Some lessons from experience of wikis so far are given and the possible future of wikis, especially with respect to museums, is considered. Keywords: wiki, on-line collaboration, virtual community, Wikipedia, Web 2.0.
Semantic Wikis and the Collaborative Construction of Ontologies: Case Study
Ontologies are complex artifacts. They should seek consensus on the use of a set of modeled concepts. Some authors propose that these devices would be beneficial if they were built collaboratively. This article aims to address the use of a semantic wiki as an alternative to the collaborative construction of ontologies, and describes its ontological structure. Wikis are known as tools for collaborative construction of content. The semantic wiki is a research effort to integrate the concepts of wikis with the semantic web. The case study presented shows an implementation in Semantic MediaWiki: the best known and most used semantic wiki features by the academic community and the organizational environment.
WikiBridge: a Semantic Wiki for Archaeological Applications
2013
This paper details the main concepts and the architecture of WikiBridge, a semantic wiki, developed for the project CARE (Corpus Architecturae Religiosae Europeae – IV-X saec.). The aim of the CARE project is the constitution of an integrated corpus of the European Christian buildings dated from the 4th to the beginning of the 11th century. WikiBridge, has been developed in order to: 1) allow collaborative work of researchers involved in the project, and 2) open the corpus to a large public. WikiBridge combines the collaborative and traceability aspects of wiki, with se mantic consistency and query capabilities. Semantics is guaranteed by an ontology based on CIDOC-CRM.