Semantic Navigation on the Web with SWGET Valeria Fionda1, Claudio Gutierrez2, Giuseppe Pirro1

1 KRDB, Free University of BOZEN-BOLZANO, Bolzano, Italy 2 DCC, Universidad de Chile, Santiago, Chile

The graph nature of the Web of Data with

thousands of interlinked RDF data

sources needs navigational languages.

SWGET is available both as a standalone GUI and a Web portal.

SWGET enables to write scripts containing navigational expressions written in

NautiLOD.

Scripts are represented in RDF and thus can be shared, modified and reused.

You can instruct your Semantic Web agent and it will locate information of your

behalf. The NautiLOD navigational language enables to:

1. declaratively specify data sources in the Web of Data; 2. perform controlled navigation across data sources via ASK SPARQL

queries; 3. retrieve data along the navigational path;4. command actions during the navigation (e.g., send notification

messages).

SWGET features

StandaloneGUI

Webportal

Biomedical Knowledge RepositoryBKR

A SW based application that helps biologists interactively study and explore the BKR.We developed the iExplore to1) visualize and navigate all the

possible semantic predications 2) search for interesting links

between concepts.

iExplore

• PubMed: 14M predications (facts) extracted from 21M abstracts by normalizing biomedical entities into Metathesaurus concepts

• UMLS: 12M predications in the Metathesaurus derived from 87 sources integrated in the UMLS

Available at http://knoesis.wright.edu/iExplore

• BKR Schema: 2M hierarchical concepts from Metathesaurus, and 650 relations from Semantic Network• BKR Instances: 26M predications from PubMed and UMLS

LEAPS: A Semantic Web and Linked data framework for the Algal Biomass Domain

From Algae to Energy via Semantic Web and Linked data

LEAPS enables stakeholders in the algal biomass domain to interactively explore, via linked data, potential algal sites and sources of their consumables across regions in North-Western Europe for generation of bioenergy

Linked Entities for Algal Plant Sites

The first (known) application of SW/LD to Algal Biomass datasets

Monika Solanki, Birmingham City University, UK

Smart-Aleck: An Interestingness Algorithm for Large Semantic Datasets

Kavi Mahesh & Pallavi Karanth, PESIT, India

http://activehiring.labs.exalead.com

Revealing HR trends using LOD cloud

X-ENS: Semantic Enrichment of Web Search Results at Real-TimePavlos Fafalios and Yannis Tzitzikas

Institute of Computer Science (ICS), Foundation for Research and Technology -Hellas (FORTH)

Try X-ENS: http://139.91.183.72/x-ens

query

resultsLOD

entities

SWC’12, Boston, USA

Semantic Web Challenge 2012 | Alexander Seeliger and Heiko Paulheim | TU Darmstadt

A Semantic Browserfor Linked Open Data

LOD for end users –is that all we can do?

Open Self Medication

- Self Medication molecules are rated (from A to E) given a tolerance/efficient ratio.

Semantic Web Challenge 2012 | Heiko Paulheim | TU Darmstadt

Browsing the Semantic Webwith Auto Complete

The Open World Assumption – do we really need to live with it?

SEMANTIC WEB CHALLENGE

iPlant Semantic Web Platform uses SSWAP(Simple Semantic Web Architecture and Protocol)

to enable Semantic Pipelines acrossDistributed Web and High Performance Computing Resources

Live production platform (http://sswap.info) offering transaction-time OWL reasoning to discover, construct, and engage on-demand semantic pipelines of third-party semantic web services

Background image: Creative Commons NASA/NOAA/GSFC/Suomi NPP/VIIRS/Norman Kuring

UC Davis

Texas Advanced Computer CenterUniversity of Arizona

Gessler DDG, Bulka B, Sirin E, Kang Y, Klinov P, Vasquez-Gross H, Yu J, Wegrzyn J

SELECT ?x WHERE { ?x rdf:type schema:Movie . ?x dbpedia:starring ?y . ?y rdf:type dbpedia:Athlete . ?y rdf:type dbpedia:MartialArtist}

0 Results !!!

Did you mean?

SELECT ?x WHERE { ?x rdf:type schema:Movie . ?x dbpedia:starring ?y . ?y rdf:type dbpedia:Athlete }

1. Brian Lopes2. Hugo Soto3. ...

http://bit.ly/lodatio

Use RailGB To Simplify Your Life

<sameAs>

14

SSC Architecture

SSC Web-Based Platform

SSC CQELS/SPARQL Visual Editor

SSC Mobile App

SSC Web-socket

SSC MAIN FUNCTIONALITIEShttp://superstreamcollider.org

Strabon

Wildfire Monitoring Using Satellite Images, Ontologies and Linked Geospatial Data

Greek Administrative Geogra

phy

National Observatory of Athens

Geonames

Corine Land Use Land Cover

Coastline

Linked

GeoData

GeoSPARQLstSPARQL

GREEK FIRE BRIGADE

GREEK CIVIL PROTECTION

AGENCY

GREEK ARMY

SWeFS

National and KapodistrianUNIVERSITY OF ATHENS

K. Kyzirakos, M. Karpathiotakis, G. Garbis, C. Nikolaou, K. Bereta, M. Sioutis, I. Papoutsis, T. Herekakis, D. Michail, M. Koubarakis, and C. Kontoes

SPUD- Semantic Processing of Urban Data

Documents +Metadata

Structure Entities Links Views Insight

Pay-as-you-go, Gain-as-you-go

VISIT SPYROS KOTOULAS & FREDDY LECUE @ DEMO + POSTER

Tracking Movement and Attention of Crowds in Real Time Analysing Social Streams for London 2012 Opening Ceremony

The ProblemTo manage a big event requires tracking in real time the movement of crowds and if the event is capturing the attention of the audience

Our ApproachSocial Media AnalysisAdvantagesPervasive, and minimally invasive.

The Results http://streamreasoning.org/demos/london2012

18

Exploring the Linked Data Cloud via Contextual Tag Cloud

For Billion Triples Challenge

Tags are ontological terms assigned to instances.

A context is a set of tags that defines a subset of instances.

In the Contextual Tag Cloud, the font size of each tag reflects the size of intersection between instances of the context and those of the tag.

Users can construct a context by clicking on tags or removing them

Tags of an instance can vary under different inference rules

Tag font sizes reflect sizes of intersections.

provides a more detailed summary of linkages beyond the LOD cloud diagram;

helps casual users explore a large scale dataset;

helps data providers find potential errors or missing links.

“How we stood on the shoulders of SETI@home…

…and made it SEKI@home…”

Search for Embedded Knowledge Items

Thomas Steiner (Universitat Politècnica de Catalunya, @tomayac)Stefan Mirea (Jacobs University Bremen, @stmirea)

A need for connection…

Semantic Web Challenge - ISWC 2012 - Boston13/11/2012

Semantization of data (events, media, people) Reconciliation of sparse and highly heterogeneous data User-centric design: discovering, deciding and recommending Scalability, Caching and Optimization