SEMLIB - final conference - UNIVPM presentation

SEMLIB PROJECTSemantic Web Tools for Digital Libraries

Public conference

Semantic Annotations with Pundit

Dr. Christian MorbidoniSemedia, Università Politecnica delle Marche, Ancona, Italy

venerdì 14 dicembre 12


SemLib Public conference

Role of UNIVPM in the Project




WP3 objectives

• Objective: “To develop the foundational programming libraries to implement a modular and configurable web annotation system based on Semantic Web technologies that can be plugged into existing web application and digital libraries and that can export/import semantic annotations from/to the Web of Data (Linked Data).”

• Deliverables:• D3.1: Use cases and requirements.

• Partners collaboratively worked on use cases and requirements.• D3.2: Prototype version of the Annotation System.

• A first working version of the annotation system to be tested and evaluated by SMEs

• D3.3: Final version of the Annotation System.• The SEMLIB release made available to SMEs for deployment




Linked Data and semantic annotations




SCENARIO




SCENARIO

• Web annotation

• Many tools to bookmark, highlight, comment web pages

• Many of them appeared in parallel with our development

• E.g. sharedcopy.com, annotateit.org, diigo.com, clipboard.com, evernote.com




SCENARIO

• Web annotation







SCENARIO

• Web annotation




• Collaborative annotation adds a layer of knowledge to the web




SCENARIO

• Web annotation








SCENARIO

• Web annotation





• Annotations usually limited to simple tags and textual comments




SCENARIO




SCENARIO

• Goal:

• “A web annotation tool to produce semantically structured and reusable data: Linked Data”




SCENARIO

• Goal:





SCENARIO

• Goal:


• Benefits:

• To unambiguously express semantics to be processed by software agents

• Annotations power Digital Libraries, improving browsing, search, automatic classification and recommendation of content, etc.

• The reuse of such a collaborative knowledge in different contexts and different applications. Creating ad hoc interactive visualization and exploration apps.




Linked Data2007




Linked Data2008




Linked Data2009




Linked Data2010




Linked Data2012




Linked Data on the Web




Institutions





InstitutionsCompanies






Geo-spatialservices






Geo-spatialservices

LibrariesCultural Heritage






Geo-spatialservices







Geo-spatialservices







Geo-spatialservices

?LibrariesCultural Heritage






Geo-spatialservices







Geo-spatialservices







Geo-spatialservices

Libraries

?





Geo-spatialservices

Libraries

?




• Semantic Web Applications:

• Access/browse a global interconnected DB

• Merge, mix data

• Let people reuse your data in creative ways!


Geo-spatialservices

Libraries

?






• Merge, mix data



Geo-spatialservices

Libraries

?






• Merge, mix data



Geo-spatialservices

Libraries

?


http://www.ctl.sns.it/doni/?u=27






• Merge, mix data



Geo-spatialservices

Libraries

?








• Merge, mix data



Geo-spatialservices

Libraries

?







Knowledge Graph




Knowledge Graph




Knowledge Graph




Knowledge Graph

My Vocabulary/Ontology - Philosophers Nietzsche Immanuel Kant Socrates ….+ Relevant Topics God Politics Economy+ Places




Knowledge Graph





Knowledge Graph


has topic

transcript




Knowledge Graph


has topic

transcript quotes

criticizes




Knowledge Graph


has topic

transcript quotes

criticizes

cites




Knowledge Graph


see also

depicts

has topic

transcript quotes

criticizes

cites




Knowledge Graph


see also

depicts

Königsberg

birth place

Max Weber

influenced

Erfurt

birth place

has topic

transcript quotes

criticizes

cites




The Pundit Annotation system




RDF Data modelBased on the Open Annotation Data Model




RDF Data model

An annotation has a creator, a date and other basic metadata




RDF Data model

An annotation is attached to web resources,as text excerpt in a page or (polygonal) regions

over an image




RDF Data model

Annotations contains semantic statements representing

the knowledge expressed by a user at a given time

E.g. a text - cites - an authoran image - depicts - a placea text - agrees with - an other texta text - defines - a concept




SemLib Annotation Server

Web Browser

SMEs digital archives

SemLib Annotation Client

RESTful API

Triplestore

Read/writeannotations

User

Creates/explores annotations while surfing the web

Other web (and non web) application

public API calls

SemLib Recommender System

Application Logic

public orad-hoc API calls

Architecture





Web Browser



RESTful API

Triplestore


User



public API calls


Application Logic


Architecture

Integrate by:- Including js library in

web pages- ... or dynamically load via

bookmarklet





Web Browser



RESTful API

Triplestore


User



public API calls


Application Logic


Architecture

Integrate by:- Including js library in

web pages- ... or dynamically load via

bookmarklet

The recommenderfetches data via standard SPARQL endpoint




Docs and demo: http://thepund.it


http://thepund.it

http://thepund.it



• Users: OpenID

• google, facebook

• your own!

• No anonymous annotations.

Users




• Users: OpenID

• google, facebook

• your own!

• No anonymous annotations.

Users




• Collect annotations into Notebooks

• private or public

• share with others

Notebooks




• Collect annotations into Notebooks

• private or public

• share with others

Notebooks




Fine granular annotations:select precise fragments of texts or images

Media Fragments annotation




Selecting items




Triple composer




Triple composer




Triple composer




Triple composer




Triple composer




Custom vocabularies

Different communities need different terms and relations

Plugin taxonomies and relation sets linking simple JSON files




Entity extraction




• Bookmarklet version

• A clipping tool to annotate every pages

• No installation requirements

The bookmarklet




The bookmarklet




REST APIs to create and consume annotations




REST API

• Annotation and authoring APIs

• APIs supports RDF/XML, RDF/JSON and N3 formats

• Examples:• GET /annotations/search?query={http://example.com/doc1.html}

Gets the contexts of all the annotations referring to the specified resource (or a part of it, e.g. a DOM fragment XPointer)

• GET /notebooks/21345/graphReturns an RDF graph that merges all the annotation’s graphs included in the notebook

• POST /notebooks/21345 with payload RDFCreates a new annotations with the given triples as graph (context is added at server side)




• Users and permissions management APIs• Login using OpenID • No secret data (e.g. user passwords and credentials) need to be

managed• Clients can access APIs by supporting standard HTTP redirect• Users can login with existing accounts (e.g. Google Account)

• Public APIs• Expose data only from public users notebooks!

• SPARQL endpoints• Query one or more notebooks as a single RDF graph




SMEs are already experimenting with such APIs and producing interesting apps



Thank you.


Documents

SEMLIB - final conference - UNIVPM presentation