http://lod2.eu

Creating Knowledge out of Interlinked Data

http://lod2.eu

WP5 – Linked Data Browsing,

Visualization, and Authoring

Interfaces

Sean Policarpio

Digital Enterprise Research Institute

National University of Ireland, Galway

http://lod2.eu

Creating Knowledge out of Interlinked Data

Work Package 5

• Our concerns: the browsing, visual representation, and

creation of linked data.

• Integration with the LOD2 project consists of components that

present and create linked data and span across various

application types and device mediums:

– Spatial-based and faceted browsers, widgets

– Social networking

– Mobile device interfaces

WP5

http://lod2.eu

Creating Knowledge out of Interlinked Data

WP5 Tasks & Deliverables

Faceted Spatial-Semantic Browsing

Component

Adaptive Semantic Authoring

Social Semantic Networking

Mobile Semantic Interfaces

WP5

http://lod2.eu

Creating Knowledge out of Interlinked Data

Task Breakdown

• Concerned with the spatial-semantic browsing component

5.1 Faceted Spatial-Semantic Browsing

Component

• Widget based implementations and tools used for accessing and creating semantic-content in various environments

5.2 Adaptive Semantic Authoring

• Implementation of social networking interfaces based on and connected to semantic-content

5.3 Social Semantic Networking

• A mobile interface for interacting with the above tasks

5.4 Mobile Semantic Interfaces

http://lod2.eu

Creating Knowledge out of Interlinked Data

5.1 Faceted Spatial-Semantic Browsing Component

Evaluation of the Browser

with the Defined

Benchmark

• Application of the benchmarking definition to measure the browsers query answering effectiveness

Final Release of the Faceted

Spatial-Semantic Browser

• An extended and refined version of the initial release.

Geo-Benchmarking

Definition

• A dataset benchmark for spatial-semantic queries and results returned from the browser

Initial Release of the Faceted

Spatial Semantic Browsing

Component

• A base-functional prototype of the spatial-semantic browser

http://lod2.eu

Creating Knowledge out of Interlinked Data

The Spatial-Semantic Browsing Component

http://linkedgeodata.org

http://lod2.eu

Creating Knowledge out of Interlinked Data

5.2 Adaptive Semantic Authoring

• A widget component for the authoring of semantic content. This is particularly concerned with the faceted spatial-semantic browser.

A Spatial Authoring

Widget Set

• A framework for the automatic creation of widget interfaces for the creation and editing of semantic content.

An Adaptive Widget

Choreography

http://aksw.org/Projects/RDFauthor

http://lod2.eu

Creating Knowledge out of Interlinked Data

The Spatial-Semantic Browsers Authoring Widget

http://linkedgeodata.org

http://lod2.eu

Creating Knowledge out of Interlinked Data

5.3 Social Semantic Networking

• An interface for the authoring components of the LOD2 stack that informs and presents users with linked data

• e.g. Notifications for changes/updates of Semantic Web data

The Subscription and Notification

Service

• Extend this interface to be utilised as a service with the Open-Social API

• Allows for connectivity with popular social networks

Open-Social API integration with

LOD2 Stack

http://docs.opensocial.org

http://lod2.eu

Creating Knowledge out of Interlinked Data

5.4 Mobile Semantic Interfaces

Mobile Semantic Interfaces

The Subscription

and Notification

Service

Adaptive Semantic Authoring Widgets

Faceted Spatial-

Semantic Browsing

Component

• Integration of the above components

into a mobile device format

• E.g. the Android framework for

cross-device support

http://www.android.com/branding/

http://lod2.eu

Creating Knowledge out of Interlinked Data

Additional Integration Items: An Assisted SPARQL Query Editor

• Based on a Data Graph Summary; a model that displays attributes such as entity and class linkage, property

and class usage (cardinality), as well as other important statistical information for a particular graph of data (eg.

RDF, RDFa, microformats).

• Stored as an RDF graph so that it may be queried and utilised in conjunction with the datasets it represents.

• Computed using a scalable, distributed computing system (i.e Apache Hadoop) for the purpose of producing

summaries for very large sized data graphs.

http://lod2.eu

Creating Knowledge out of Interlinked Data

Points for this Weeks Break-out Session

5.1 – Browsing Component

Benchmarking status and issues

Expectations for next release of the faceted spatial-semantic browser

5.2 – Adaptive Semantic Authoring

Showcase integration of the adaptive widgets

Discuss present status and additional features to be implemented

Framework expectations

http://lod2.eu

Creating Knowledge out of Interlinked Data

Points for this Weeks Break-out Session

5.3 – Social Semantic Networking

Presentation of the surveyed/reviewed methods

5.4 – Mobile Interfaces

Discussion about mobile-based approaches