MuseoTorino, first italian project using a GraphDB, RDFa, Linked Open Data

A real case of NOSQL-GraphDB, Linked Data and Semantic Web application

Agenda: What is MuseoTorino Why and how to use a GraphDB System Architecture Linked Data, but above all Open Semantic Web, the way to….

What is MuseoTorino: «Non un Nuovo Museo, ma un Museo Nuovo» More than 2000 cards for place More than 1000 cards in objects, subjects, events, themes and itineraries More than 2000 bibliographic references More than 4000 images e 150 digital books

What is MuseoTorino | Main sections Institutional infos Explore Catalog Explore Colletion Books/Media Library Digital Books Content/Cards Management

What is MuseoTorino: Main Page

What is MuseoTorino | Explore catalog

What is MuseoTorino | Explore collection

What is MuseoTorino | Digital Books

What is MuseoTorino Content/Cards Management

Analysis: Issues and constraints during analysis: Heterogeneous infos to be catalog Strong relations between cards GeoPosition for every card

Analysis: Heterogeneity issue: Need a scalable and flexible data model Changable in the future without contraints Solution A DocumentDB

Analysis: Relation issues: Relations are not predictable Really quick in relation search Solution An RDF

Analysis: Geoposition issue: Thousand of geopositions Spatial queries Soluzione A GIS

Life is a graph … Torino Born, 10 August 1810 Die, 6 June 1861 Live Position RIP 1°Cavour’s government (1852-1855) 2°Cavour’s government (1855-1859) Cavour Park Position 1°Cavour’s Italian government (1861) 3°Cavour’s government (1860-1861) Govern 2°lieel correlation !!

A GraphDB ! SchemaLess (like a DocumentDB)

A GraphDB ! SchemaLess It manages milions of objects and relations (like an RDF)

A GraphDB ! SchemaLess It manages milions of objects and relations Spacial Integration (like a GIS)

GraphDB, our choise | Neo4J AGPL 3.0 Licence, some components are to be paid but core is free (basic licence). 100% Java Natively integrated with Lucene Neotecnologies, a well organized company with a solid business plan

Architecture Simple and Powerful Optimized for Open Data and Services integration As possible interchangable in its core components

Architecture - Implementation Neo4J + Blueprints , great performance Java + Jersey + Grizzly , great flexibility REST interface , max accessible JSON format , great portability PHP + CodeIgniter , max simplicity Javascript + JQuery , great efficency

Architecture | Neo4J Robust and reliable Open Source in its basic components Great performance Blueprints compliant Scalable

Architecture | Blueprints Like JDBC, but for GraphDBs ! Very very simple to use Automatic index management

Architecture | Jersey + Grizzly REST interfaces really simple implementation It help you to think state-less Native JSON support Grizzly, like Tomcat but embeddable in your app Really agile service, but very robust

Architecture | JSON It support in a easy way the graph structure More simple to manage (vs XML) It comes directly to javascript ! Maybe the future standard format for graphs and also for RDF !

Architecture | PHP and Javascript CodeIgniter let you to create, in a simple way, REST APIs, in particular if public (GET) JQuery helps in REST calls (to PHP) Both Javascript and PHP work natively with JSON

Architecture | Some cons … GraphDBs lack of tools for management Some difficulties thinking «graphs» … and more difficulties trying to explain graphs to the customer ….

Open Data Alpha release All the infos in the catalog are available to the community thru an open interface Read only JSON format Available on www.museotorino.it/api

Open Data | Some example: Search with key value: GET /api/search/{type}?json={parameters} Categories: GET /api/categories Entity by category GET /api/entities_by_category/{id|sid|guid}/{value} Relations by entity GET /api/connections/{id|sid|guid}/{value}

Open Data The format is inspired to Freebase (www.freebase.com) and its graph api (http://graph.freebaseapps.com)

Open Data Il formato è ispirato a quello usato da Freebase (www.freebase.com) per le sue graph api (http://graph.freebaseapps.com)

Open Data At the moment only using API Query engine (in a custom format) Format is not stardardized yet. At the moment we need to create the «Linked» part, following RDFa/OpenGraph stardards

Open Data Ad oggi solo attraverso le API Possibilità di eseguire query (in un formato custom) Ad oggi il formato è suscettibile di modifiche Ancora da integrare la parte Linked, seguendo gli standard di riferimento (OpenGraph)

Web 3.0 It’s time to semantic contents Tim Berners Lee in late 2007:

Web 3.0 On 12th may 2009 Google announce using RDFa standards On 21th April 2010 Facebook announce to open its portal at OpenGraph Protocol (based on RDFa)

Web 3.0 The data shows that the usage of RDFa has increased 510% between March, 2009 and October, 2010, from 0.6% of webpages to 3.6% of webpages (source: P eter Mika at Yahoo! http://tripletalk.wordpress.com/2011/01/25/rdfa-deployment-across-the-web by )

Web 3.0 – How to: Tool <div xmlns:v="http://rdf.data-vocabulary.org/#" typeof="v:Person" > Mi chiamo <span property="v:name" >Roberto Sacchi</span>, ma tutti mi chiamano <span property="v:nickname" >Bob</span>. Questa è la mia home page: <a href="http://www.example.com" rel="v:url"> www.example.com</a>. Ho una casa ad Albenga, (Liguria) e lavoro come <span property="v:title"> ingegnere</span> per la <span property="v:affiliation"> ACME Corp</span>. </div>

Web 3.0 MuseoTorino infos are already classified Cavour as a person Cavour’s Castle as a place (where died) Cavour Palace as a place (where worked)

MuseoTorino, first italian project using a GraphDB, RDFa, Linked Open Data

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