dh2012 enriching digital libraries contents with pundit system

ENRICHING DIGITAL LIBRARIES CONTENTS WITH SEMLIB SEMANTIC

ANNOTATION SYSTEM(PUNDIT!)

Michele Nucci, Marco Grassi, Christian Morbidoni and Francesco Piazza

Semedia (Semantic Web and Multimedia)http://semedia.dii.univpm.it

DII - Department of Information Engineering. Polytechnic University of Le Marche, Ancona, ItalyTuesday, July 24, 2012

http://semedia.dii.univpm.it


Enriching digital libraries contents with Pundit [email protected]

DIGITAL EVOLUTION

• Most of the resources of interest for the Humanities:

• in digital format (digitized or born digital)

• available on the Web

• Information is multiplying faster and faster :• classification and management increasingly complex task

• well structured metadata a key requirement

• Semantic Web technologies in Digital Libraries• Publish DL content as Linked Data

• define ontologies or vocabularies for metadata encoding (Europeana Data Model, OAI-ORE…)

Tuesday, July 24, 2012

mailto:[email protected]



THE WEB SCENARIO

• Web (> 2.0) has become more social and interactive

• Annotation of Web content is beneficial:• More engaging and productive user experience• Exploit social engagement to improve resource ranking, classification

• Annotating web content has become a common task• Comments and tags are widely supported by mainstream application

• Facebook pictures tags, Flickrs pictures comments, etc ...

• Many tools to bookmark, highlight, comment web page fragments• E.g. sharedcopy.com, annotateit.org, diigo.com,

• Some tools support collaborative annotations





DL SCENARIO

• Crowdsourcing experiments for enriching DL, curating contents or uploading digital material of interest for the DL (BBC WW2 People’s War, …)

• Digital Libraries (DL) are no longer simple “expositions” of digital objects but provide users with more interaction

Digital Library

Consume Contents

Create Contents

Experts

Users

Expert modelDigital Library

Consume Contents

Create Contents

Experts

Users

TaggingConsumeContents

Linking

Commenting

Social Engagement

User Interaction

Digital LibraryConsume Contents

Create Contents

Experts

Users

TaggingConsumeContents

Linking

Commenting

Add Content Add Annotations

Crowdsourcing





SEMANTICALLY STRUCTURED ANNOTATIONS

• ... so what’s missing?

• Most of existing annotation tools are usually limited to simple textual tags and comments.

• limitation due to the ambiguity of natural language (“orange” a fruit or a color?)

• their semantic is not machine interpretable

• Semantically structured annotations to make smart use of such added knowledge:

• Unambiguously express semantics to be processed by software agents (e.g. annotations can be harvested and used by recommender systems, search engines, etc.)

• Power Digital Libraries (improving browsing, search, automatic content classification, ...)

• Reuse such a collaborative knowledge in different contexts and different applications






Users to create knowledge graphs where web content fragments, concepts and entities are meaningfully connected.






• Rely on controlled vocabularies and ontologies• share the same terminology and “talk about the same things”• annotations can be meaningfully mashed-up

• Link to the emerging Web of Data• a software can automatically get additional, useful semantic data (e.g. date and place of

birth, pictures, citations, multi-language data)

Augmenting the information of the original annotation content to support smarter application

Ex. We have discovered that the two images contain american film actors showing anger emotion!





• developed by:

• funded by:

• supported and further developed in:

• Pundit is a novel semantic annotation tool:

Semedia (Semantic Web and Multimedia)http://semedia.dii.univpm.it

with the collaboration of NET7

Semlib Project Eu Projecthttp://semedia.dii.univpm.it

DM2E EU Projecthttp://dm2e.edu/

AGORA EU Projecthttp://project-agora.eu/









SEMLIB PROJECT

• R&D project supported by EU FP7 Theme: Research for SMEs (no. FP7-SME -2010-01- 262301 - SEMLIB)

• 24 months (commenced in January 2011, currently at month 19)

Semlib ProjectSemantic Web Tools for DL

http://www.semlibproject.eu/

www.netseven.it/www.knowledgehives.com/www.liberologico.com/www.in-two.com

www.semedia.dii.univpm.it/ www.deri.ie/






http://www.netseven.it

http://www.netseven.it

http://www.knowledgehives.com




http://www.in-two.com







ANNOTATION MODEL• Based on Open Annotation Collaboration (OAC) ontology*

Contextual Information







Annotation Content







Annotation Content

Semantically Structured Content







Annotation Content

Named Graph

SPARQL support to query slices of knowledge





NOTEBOOKS• Annotations are collected in notebooks

NotebookURI

2011-01-27 10:30:56

My Example Notebook

An Example Notebook used to show the model

dcterms:creator

dcterms:created

rdfs:label

rdfs:comment

• Provide users with the capability to organize their annotations• users has a default notebook• can create more

• Put together annotations so that they can be retrieved and queried

• Different UNIX style read/write privileges (from private to completely public)

• Identified by a URI





NOTEBOOKS• Notebooks allow annotations sharing

NotebookURI

2011-01-27 10:30:56

My Example Notebook

An Example Notebook used to show the model

dcterms:creator

dcterms:created

rdfs:label

rdfs:comment

SINGLE USER

COMMUNITIES

PUBLIC

SHARE

NotebookURI

SHARENotebookURI

SHARE

NotebookURI

WIKI

• Sharing a notebook is as easy as sharing its URL on the web (similarly to popular file sharing platforms)





USER AUTHENTICATION

• Authentication is based on OpenID:

• No need to store user’s credentials

• Implemented already by mainstream company (Google, Yahoo, ...)

• Possibly avoid user multiple registration (waste of time, another password)

• Single identity can be used among different Pundit-enabled Digital Libraries

• Adding an OpenID provider is easy and transparent to the Pundit server.





ANNOTATION SHARING SCENARIO

Annotation Authoring API

Annotation Server

Annotation Consuming API

Annotation Client

Annotation Client

Annotation Client

structured annotations structured annotations

Create structured annotations







Annotation Server


Annotation Client

Annotation Client

Annotation Client


COLLECTIVE KB


Store them into a unique

knowledge base







Annotation Server


Annotation Client

Annotation Client

Annotation Client

Annotation Client

Annotation Client

Annotation Client


COLLECTIVE KB

...whose slices can be accessed not only by their creator...



knowledge base







Annotation Server


Annotation Client

Annotation Client

Annotation Client

Annotation Client

Annotation Client

Annotation Client

Third PartyApplication

Annotation Client


COLLECTIVE KB

...but also by other users and third party applications!




knowledge base







Annotation Server


Annotation Client

Annotation Client

Annotation Client

Annotation Client

Annotation Client

Annotation Client

Annotation Client

Third PartyApplication

Annotation Client


selected annotations

trusted/ufficialannotations

COLLECTIVE KB



knowledge base

...but also by other users and third party applications!


DL administrator can select annotations and publish back

as trusted annotations to enrich DL content




NAMED CONTENT• DLs change over time

• Presentation can restyled and content can be re-organized

• Same content in different pages• Some part of the page should not be

annotated (menu, ...)

• Specific markup can be added in the pages to allows Pundit:• identifying atomic pieces of content (by

means of URI)• attaching the annotations to such

contents• avoid the annotation of page accessory

component

<div class="pundit-content" about="http://example.org/contents/123">  <p>This is a named content and contains both text and a picture</p> <img src="http://example.org/pictires/pictire123.png" /> <p><em>Caption:</em> this is a caption.</p></div>


NAMED CONTENT

The same content in different pages shows the same annotations!

Text





PUNDIT ARCHITECTURE

• Open Source RESTful Web Service (Java Jersey framework)

• Cross origin request• CORS (Cross-Origin Resource Sharing)

• JSONP

• Sesame triple store• SPARQL and inference

• Different sail are provided to implement different storages (BigOWLIM, MySQL, PostgreeSQL, Virtuoso ...)

• MySQL for user data

• Set of Javascript modules (Dojo Framework)• Easily extendable

• Highly customizableCLI

ENT

SERV

ER





DIFFERENT ANNOTABLE CONTENTS

• Pundit allows the annotation of different types of contents at different level of granularity

• Text fragments

• Images

• Image fragments (under development)

• Videos and video fragments (experimented in Semtube)





• Semantic annotation of YouTube videos (alpha state) based on Pundit JavaScript libraries and annotation server

http://semedia.dii.univpm.it/semtube




http://thepund.it

http://thepund.it


DIFFERENT TYPES OF ANNOTATIONS

Annotation with different levels of expressivity and structure

Comment/Tag Panel






• Textual comments


Comment/Tag Panel






• Textual comments• Semantic Tags

• Automatically extracted from textual comments (Dbpedia Spotlight)


Comment/Tag Panel








• Popular Linked Data service(Dbpedia, Freebase, Wordnet, ..)

• Define your own (SPARQL endpoint)


Comment/Tag Panel







• Popular Linked Data service(Dbpedia, Freebase, Wordnet, ..)


• Define your own (SPARQL endpoint)

• Semantic Relations• Subject-Property-Object Statements

• Drag&Drop and suggestions

• Connect different resources (user selection, linked data entities, ...) with semantically defined properties


Triple Composer





CUSTOM VOCABULARIES• Pundit allows to use custom vocabularies/taxonomies (and

relations):• Create a JSONp file (manually or automatically from an ontology )

• Put it online

• Add its URL to the configuration to import and use it





CROSS PAGE / DOMAIN ANNOTATIONS• Special Bookmarklet allows to lunch Pundit on every Web page to perform annotations

• Selected resources (text fragments, images, ...) on different pages and domain can be added to “My Items” to be stored on server and reused on different pages





CROSS PAGE / DOMAIN ANNOTATIONS• Special Bookmarklet allows to lunch Pundit on every Web page to perform annotations

• Selected resources (text fragments, images, ...) on different pages and domain can be added to “My Items” to be stored on server and reused on different pages

Add to My Items

Use in another page

Create cross page semantic relations

cites





DEMO TIME!

http://thepund.itTuesday, July 24, 2012



http://thepund.it

http://thepund.it

http://thepund.itSemedia (Semantic Web and Multimedia)


Semlib Project Eu Projecthttp://www.semlibproject.eu/

THANK YOU!

DM2E EU Projecthttp://dm2e.edu/

AGORA EU Projecthttp://project-agora.eu/


http://thepund.it

http://thepund.it





dh2012 enriching digital libraries contents with pundit system

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