The goal of the LOD2 project is to develop infrastructure technology and best practices that fill the chasm between structured-linked-data and applied model logic & reasoning, en route redefining the Web as we know it. In doing so, LOD2 will integrate and syndicate linked data with large-scale existing applications and showcase the benefits in three application scenarios including Media & Publishing, Corporate Data Intranets and eGovernment.

Partners: Centrum Wiskunde & Informatica (NL), National University of Ireland, Galway (IRL), Freie Universität Berlin (D), Open Link Software (GB), Semantic Web Company (A), Ten Force (B), Exalead (F), Wolters Kluwer Deutschland (D), Open Knowledge Foundation (GB)
Duration: 2010–2014
Funding Programme: FP7-ICT-2009–5 (Collaborative Project)

More information: http://lod2.eu

LATC – LOD Around-the-Clock

This EU-funded support action aims at making it easier for data owners to publish Linked Data and interlink it with other data sources. A user-friendly 24/7 interlinking engine is developed within the project, allowing to compute and update interlinks as well as to assess their quality.

Partners: National University of Ireland, Galway (IRL), Vrije Universiteit Amsterdam (NL), Freie Universität Berlin (D), Talis Ltd. (GB)
Duration: 2010–2012
Funding Programme: FP7-ICT-2009.4.3 (Support Action)

More information: http://latc-project.eu

SCMS – Semantic Content Management Systems

SCMS aims at combining automatic knowledge discovery and participative, end-user-driven knowledge curation and extension techniques through Social Semantic Web approaches so as to create novel applications in Enterprise Knowledge Management and real-time News Mining.

Partners: Punk.Netservices GmbH (A), Open Link Software Ltd. (UK), Netresearch GmbH & Co. KG (D), Digital Trowel Inc. (IL)
Duration: 2010–2012
Funding Programme: Eurostars

More information: http://www.scms.eu

Social Semantic Collaboration for EKM, E-Learning & E-Tourism

Aim of the project is to advance and apply adaptive database and knowledge base techniques as well as user interface techniques to enable large-scale, end-user-driven semantic collaboration in the three application domains Enterprise Knowledge Management, E-Learning and E-Tourism.

Partners: FH Kärnten (A), Open Link Software Ltd. (UK), B2 d.o.o. (SLO), Vakantieland (NL)
Duration: 2008–2010
Funding Programme: FP7-SME

More information: http://ontowiki.eu

LE4SW Regional Technology Platform for Social Semantic Collaboration

Aim of the project is to (further) develop AKSW's semantic data wiki technology platform by integrating view maintenance, query subsumption and schema evolution algorithms for the RDF data model and adopt it towards the requirements of business information systems and Web content management.

Partners: Ebrosia GmbH, Business Intelligence GmbH (D), Netresearch GmbH & Co. KG (D)
Duration: 2009–2011
Funding Programme: WK Potential, German Ministry of Education and Research (BMBF)

More information: http://le4sw.de

SoftWiki – Semantics- & Community-Based Requirements Engineering

The project delivers fundamental building blocks for early phases of Requirements Engineering by establishing a stakeholder-driven knowledge engineering process for requirements elicitation, organisation and management.

Duration: 2006–209
Funding Programme: research initiative “Software Engineering 2006”, German Ministry of Education and Research (BMBF)
Partners: Universität Duisburg-Essen, T-Systems MMS, ProDV AG, LeCoS GmbH, QA Systems GmbH, ISA Tools GmbH

More information: http://softwiki.de

Open-Source & Community Projects

AKSW has launched a number of high-impact R&D projects.

LinkedGeoData

LinkedGeoData is an effort to add a spatial dimension to the Web of Data / Semantic Web. LinkedGeoData uses the information collected by the Open Street Map project and makes it available as an RDF knowledge base according to the Linked Data principles. It interlinks this data with other knowledge bases in the Linking Open Data initiative.

OntoWiki

OntoWiki is a semantic collaboration platform implementing the Web 2.0 idea of an architecture of participation for the collaborative development of Semantic Web knowledge bases. OntoWiki is implemented as an alternative user interface for Powl and included into the latest Powl distribution.

Impact: more than 8.000 downloads of the OntoWiki software (since 2004) / 773 in Sep 2007, on average 3.000 monthly visitors at http://Ontowiki.net, serving a broad variety of industrial and academic users.

Triplify

Triplify tackles the chicken-and-egg problem of the Semantic Web by providing a building block for the “semantification” of Web applications. Triplify provides small, light-weight plugins for database-backed Web applications and exposes semantics as RDF, Linked Data and JSON.

Cofundos

Cofundos.org is a platform for community innovation and funding of open source software; many individual donations and contributions are pooled together in order to realize intelligent software ideas.

Impact: more than 10.000 visitors in Oct 2007, 62 Blog posts (according to Technorati), News about Cofundos in major news channels (e.g. Heise.de, Golem.de, Linux.com), more than 300 registered users, more than 5k€ pledged donations in Oct 2007.

DBpedia

DBpedia is a community effort to extract structured information from Wikipedia and make this information available on the Web. DBpedia allows you to ask sophisticated queries against Wikipedia and to link other datasets on the Web to Wikipedia data.

Impact: 300 posts about DBpedia in the Blogosphere (according to Technorati), ca. 100.000 visitors at the DBpedia website in 2007, on average 350 daily visitors. DBpedia has become the most popular dataset used with Semantic Web applications and research prototypes.

DL-Learner

DL-Learner is a tool for learning concepts in Description Logics (DLs) from user-provided examples. Equivalently, it can be used to learn classes in OWL ontologies from selected objects. The goal of DL-Learner is to support knowledge engineers in constructing knowledge and learning about the data they created.

Relation Annotation in GENIA

The aim of the GENIA relation ontology is to provide a set of relations which define a detailed and broadly applicable set of relation types based on accepted domain standard concepts for use in corpus annotation and domain information extraction approaches. To ensure that the meaning of the relationships is explicit, the relations are specified in OWL (see download section). We integrate categories and relations from several domain ontologies including IAO, OBI, GO and the GENIA ontology for maximal compatibility.

BorderFlow

Border~Flow

BorderFlow is a general-purpose graph clustering tool. It uses solely local information for clustering and achieves a soft clustering of the input graph. It maximizes intra-cluster density and inter-cluster sparseness simultaneously. The default setting of Border Flow implements a fast heuristic for maximal usability. BorderFlow also implements several heuristics, optimal versions and hardening approaches.

LIMES

LIMES is a link discovery framework for the Web of Data. It implements time-efficient approaches for large-scale link discovery based on the characteristics of metric spaces. It is easily configurable via a web interface. It can also be downloaded as standalone tool for carrying out link discovery locally.

FOX

FOX is a framework for extracting RDF out of unstructured data. It combines functionality for Named Entity Recognition, Relation Extraction and Keyword Extraction via ensemble learning to ensure high-precision and high-recall extraction.

ALOE

ALOE is a linked data consumption engine that provides assistance to its user by suggesting class, property and consumption settings automatically.

DBPSB

Projects/DBPSB is a pure RDF benchmark based on actually posed queries.
It provides insight view over the performance of Virtuoso, Sesame, Jena-TDB, and BIGOWLIM.

NLP2RDF

NLP2RDF is a LOD2 Community project that is developing the NLP Interchange Format (NIF). NIF aims to achieve interoperability between Natural Language Processing (NLP) tools, language resources and annotations.

More information on http://nlp2rdf.org/about

Incubator Projects

Mobile Social Semantic Web Client (MSSW)

The Mobile Social Semantic Web Client (mssw) is an Android-based social web client as well as a contacts provider, which integrates your distributed FOAF/WebID social network into your mobile phone.

More information: http://aksw.org/Projects/MobileSocialSemanticWeb

ReDD Observatory

The Research-Disease Disparity Observatory is a project about evaluating the health-care disparity between active areas of biomedical research and the global burden of disease, using Linked Data and data-driven discovery.

More information: Projects/ReDDObservatory

RDFaCE

RDFaCE is an RDFa Content Editor based on Tiny MCE. It supports different views for semantic content authoring and uses existing Semantic Web APIs to facilitate the annotation and editing of RDFa contents.

More information: Projects/RDFaCE

SINA a semantic search engine

SINA is a search engine that tranforms keyword based-query to SPARQL query.
Currently it is running on DBpedia knowledge base.

More information: Projects/lodquery

Stats2RDF

Stats2RDF is an effort to represent multi-dimensional statistical data as RDF using the RDF Data Cube Vocabulary by importing CSV files in a plug-in in OntoWiki.
More information: Projects/Stats2RDF

LESS – Syndicate Linked Data Content

LESS is an end-to-end approach for the syndication and use of linked data based on the definition of templates for linked data resources and SPARQL query results. As a result, LESS allows to integrate Linked Data into your website, blog, wiki ...

More information: http://less.aksw.org

Catalogus Professorum – Leipzig Professors Catalog

An adapted OntoWiki with accompanying vocabularies for managing historic information related to the professors working at the University of Leipzig in its 600-year history.

More information: http://www.uni-leipzig.de/unigeschichte/professorenkatalog/

Erfurt – PHP Semantic Web API

Comprises the API underneath OntoWiki, which can be used to build sophisticated Semantic Web applications.

More information: http://aksw.org/Projects/Erfurt

Adaptive Caching SPARQL Proxy

The Adaptive Caching SPARQL Proxy improves the performance of triple stores by caching query results and even complete application objects. The selective invalidation of cache objects, following updates of the underlying knowledge bases, is based on analyzing the graph patterns of cached SPARQL queries in order to obtain information about what kind of updates will change the query result.

More information: http://aksw.org/Projects/QueryCache

xOperator – Semantic Instant Messaging

xOperator combines advantages of social network websites with instant messaging. It represents a semantic agent for xmpp / jabber network which finds and shares content about resources (using RDF/SPARQL) for you and your jabber friends.

od@fmi – Open Data for the University of Leipzig's Math and Computer Science Faculty

The aim of this project is to provide all relevant data about the faculty infrastructure and courses as linked open data.

More information: od@fmi

Open Research.org

A semantic Wiki for collecting and sharing scientific meta-data such as CfPs, tool descriptions, research profiles, conference statistics etc.

More information: http://OpenResearch.org

RDFauthor—edit distributed, structured content on the Web

RDFauthor is a system able to extract structured information from RDFa-enhanced websites and to create an edit form based on this data. To this end, it makes use of semantics-aware editing widgets that hide most of the RDF data model from the user, thus allowing more people to author semantic content. If the embedded data does not suffice to create a rich user-supporting editing view, the underlying Semantic Web infrastructure is used to retrieve additional schema-related information about the elements used.

More information: Projects/RDFauthor

SPARQL Trainer

A configurable Java servlet for SPARQL training.

More information: Projects/SparqlTrainer

Semantic Pingback

The Semantic Pingback mechanism is an extension of the well-known Pingback method, a technological cornerstone of the blogosphere, thus supporting the interlinking within the Data Web.

More information: Projects/SemanticPingBack