The Datalift Project aims to publish and interconnect government open data. It develops tools and methodologies to transform raw datasets into interconnected semantic data. The project's first phase focuses on opening data by developing an infrastructure to ease publication. The second phase will validate the platform by publishing real datasets. The goal of Datalift is to move data from its raw published state to being fully interconnected on the Semantic Web.
Lightening talk for Semantic Web in Libraries (SWIB13) conference at 2013-11-27 about another method of expressing RDF data. See http://gbv.github.io/aREF/ for a preliminary specification.
Lightening talk for Semantic Web in Libraries (SWIB13) conference at 2013-11-27 about another method of expressing RDF data. See http://gbv.github.io/aREF/ for a preliminary specification.
Presentation of SPARQL Anything at the MEI Linked Data IG Meeting in July 2021. We try SPARQL Anything with MEI XML files and experiment with simple and difficult tasks.
The forth lecture of the course I'm giving on "Interoperability and Semantic Technologies" at Politecnico di Milano in the academic year 2015-16. It presents an introduction to RDF. It starts presenting the data model. Then it presents the turtle serialization. It compares XML vs. RDF. Finally, it provides few informations about RDFa and Linked Data.
Connections that work: Linked Open Data demystifiedJakob .
Keynote given 2014-10-22 at the National Library of Finland at Kirjastoverkkopäivät 2014 (https://www.kiwi.fi/pages/viewpage.action?pageId=16767828) #kivepa2014
Talk at 3th Keystone Training School - Keyword Search in Big Linked Data - Institute for Software Technology and Interactive Systems, TU Wien, Austria, 2017
Wi2015 - Clustering of Linked Open Data - the LODeX toolLaura Po
Presentation of the tool LODeX (http://www.dbgroup.unimore.it/lodex2/testCluster) at the 2015 IEEE/WIC/ACM International Conference on Web Intelligence, Singapore, December 6-8, 2015
Development of Semantic Web based Disaster Management SystemNIT Durgapur
Semantic Web model In the field of disaster management to structurise the data such that any information needed during emergency will be easily available.
The Open Knowledge Extraction Challenge focuses on the production of new knowledge aimed at either populating and enriching existing knowledge bases or creating new ones. This means that the defined tasks focus on extracting concepts, individuals, properties, and statements that not necessarily exist already in a target knowledge base, and on representing them according to Semantic Web standard in order to be directly injected in linked datasets and their ontologies. The OKE challenge, has the ambition to advance a reference framework for research on Knowledge Extraction from text for the Semantic Web by re-defining a number of tasks (typically from information and knowledge extraction) by taking into account specific SW requirements. The Challenge is open to everyone from industry and academia.
Presentation of SPARQL Anything at the MEI Linked Data IG Meeting in July 2021. We try SPARQL Anything with MEI XML files and experiment with simple and difficult tasks.
The forth lecture of the course I'm giving on "Interoperability and Semantic Technologies" at Politecnico di Milano in the academic year 2015-16. It presents an introduction to RDF. It starts presenting the data model. Then it presents the turtle serialization. It compares XML vs. RDF. Finally, it provides few informations about RDFa and Linked Data.
Connections that work: Linked Open Data demystifiedJakob .
Keynote given 2014-10-22 at the National Library of Finland at Kirjastoverkkopäivät 2014 (https://www.kiwi.fi/pages/viewpage.action?pageId=16767828) #kivepa2014
Talk at 3th Keystone Training School - Keyword Search in Big Linked Data - Institute for Software Technology and Interactive Systems, TU Wien, Austria, 2017
Wi2015 - Clustering of Linked Open Data - the LODeX toolLaura Po
Presentation of the tool LODeX (http://www.dbgroup.unimore.it/lodex2/testCluster) at the 2015 IEEE/WIC/ACM International Conference on Web Intelligence, Singapore, December 6-8, 2015
Development of Semantic Web based Disaster Management SystemNIT Durgapur
Semantic Web model In the field of disaster management to structurise the data such that any information needed during emergency will be easily available.
The Open Knowledge Extraction Challenge focuses on the production of new knowledge aimed at either populating and enriching existing knowledge bases or creating new ones. This means that the defined tasks focus on extracting concepts, individuals, properties, and statements that not necessarily exist already in a target knowledge base, and on representing them according to Semantic Web standard in order to be directly injected in linked datasets and their ontologies. The OKE challenge, has the ambition to advance a reference framework for research on Knowledge Extraction from text for the Semantic Web by re-defining a number of tasks (typically from information and knowledge extraction) by taking into account specific SW requirements. The Challenge is open to everyone from industry and academia.
Experiências de aprendizagem aberta, flexível e a distância para a 4ª revoluç...UFPE
O momento sinaliza para uma nova revolução industrial. Para a primeira (vapor) e a segunda(eletricidade), as modalidades presenciais de ensino, e sua origem militar, foram adequadas à formação de contingentes de cidadãs(ãos) em suas nações. A terceira revolução (Internet) e a emergência das industrias do conhecimento e criativas revelou a necessidade de se conceber sistemas educacionais que formem pessoas capazes de resolver problemas complexos mobilizando muitas formas de raciocínio, em colaboração com distintas culturas e promovendo autonomia para si e para outrem. No amanhecer da 4ª revolução industrial (Internet das coisas) e as necessidades de aprendizagem das nações são ainda mais complexas. Nesta palestra levantaremos alguns cenários futuros com experiências de aprendizagem abertas, flexíveis e a distância para o desenvolvimento humano no momento histórico contemporâneo.
Usage of Linked Data: Introduction and Application ScenariosEUCLID project
This presentation introduces the main principles of Linked Data, the underlying technologies and background standards. It provides basic knowledge for how data can be published over the Web, how it can be queried, and what are the possible use cases and benefits. As an example, we use the development of a music portal (based on the MusicBrainz dataset), which facilitates access to a wide range of information and multimedia resources relating to music.
Lecture at the advanced course on Data Science of the SIKS research school, May 20, 2016, Vught, The Netherlands.
Contents
-Why do we create Linked Open Data? Example questions from the Humanities and Social Sciences
-Introduction into Linked Open Data
-Lessons learned about the creation of Linked Open Data (link discovery, knowledge representation, evaluation).
-Accessing Linked Open Data
I presented these slides introducing Description Logic, Semantic Web and Ontology Development since May 2010 to the students of the 'Fondamenti di Intelligenza Artificiale' course of the University of Bologna, Italy. The last part of the presentation is about some best practices to develop good ontologies.
Given at the annual Open Universiteit Informatics faculty research meeting on March 6, 2012. Video is at http://video.intranet.ou.nl/mediadienst/_website/php/external_video.php?Q=1056|videoID
VALA Tech Camp 2017: Intro to Wikidata & SPARQLJane Frazier
A hands-on introduction to interrogation of Wikidata content using SPARQL, the query language used to query data represented in RDF, SKOS, OWL, and other Semantic Web standards.
Presented by myself and Peter Neish, Research Data Specialist @ University of Melbourne.
LOD2 project plenary meeting in Paris: guest presentation of French datalift project - http://datalift.org/en/ - by Francois Scharffe and Bernard Vatant
Integrating a Domain Ontology Development Environment and an Ontology Search ...Takeshi Morita
In order to reduce the cost of building domain ontologies manually, in this paper, we propose a method and a tool named DODDLE-OWL for domain ontology construction reusing texts and existing ontologies extracted by an ontology search engine: Swoogle. In the experimental evaluation, we applied the method to a particular field of law and evaluated the acquired ontologies.
Talk about Exploring the Semantic Web, and particularly Linked Data, and the Rhizomer approach. Presented August 14th 2012 at the SRI AIC Seminar Series, Menlo Park, CA
Slides of my presentations at PyData NYC. This PDF is extracted from a Jupyter RISE slideset available at http://nbviewer.ipython.org/format/slides/github/lechatpito/PyDataNYC2015/blob/master/Word%20embeddings%20as%20a%20service%20-%20PyData%20NYC%202015%20%20.ipynb#/
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
1. The Datalift Project
Ontologies, Datasets, Tools and Methodologies
to Publish and Interlink ★★★★★ Datasets
François Scharffe
University of Montpellier,
LIRMM, INRIA
francois.scharffe@lirmm.fr
@lechatpito
With the help of the Datalift team
And the support of the French National Research Agency
RPI 28/07/2011 1
4. April 2008 September 2008
May 2007
Linking Open
Data
March 2009
September 2010
Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/
8. principles
§
Use the RDF format
§
Use URI to name things
§
Use HTTP URI HTTP (URL) so that one can look up those
names
§
Give information (HTML, RDF) when dereference those links
§
Include in this information other URIs pointing to other data to
enable discovery Tim Berners Lee,
http://www.w3.org/DesignIssues/LinkedData.html
10. phase 1: opening
the data
develop a plateform
easing the publication
11. Welcome aboard the data lift
Published and interlinked data on the Web
Applications
Interconnexion
Publication infrastructure
Data convertion
Vocabulary selection
Raw data
12. Example publication process
Environmental, weather, geological datasets
SPARQL
Content Negociation
URI de-referencing
Oil industry
Geography
equipment
13. st
1 floor - Selection
SemWebPro 18/01/2011 13
14. Vocabularies of my friends...
Ø What is a (good) vocabulary for linked data ?
§ Usability criterias
Simplicity, visibility, sustainability, integration, coherence …
Ø Differents types of vocabularies
§ metadata, reference, domain, generalist …
§ The pillars of Linked Data : Dublin Core, FOAF, SKOS
Ø Good and less good practices
§ Ex : Programmes BBC vs legislation.gov.uk
§ Vocabulary of a Friend : networked vocabularies
Ø Linguistic problems
§ Existing vocabularies are in English at 99%
§ Terminological approach :which vocabularies for « Event » « Organization »
15. Did you say « vocabulary »
… And why not « ontology »?
§ « schema » or « metadata schema »?
§ Or « model » (data ? World ?)
Ø All these terms are used and justifiable
They are all « vocabularies »
§ They define types of objects (or classes)
and the properties (or attributes) atttached to these objects.
§ Types and attributes are logically defined
and named using natural language
§ A (semantic) vocabulary
is an explicit formalization
of concepts existing in natural language
15
16. Vocabularies for linked data
Ø Are meant to describe resources in RDF
Ø Are based on one of the standard W3C language
§ RDF Schema (RDFS)
• For vocabulaires without too much logical complexity
§ OWL
• For more complex ontological constructs
§ These two languages are compatible (almost)
Ø The can be composed « ad libitum »
§ One can reuse a few elements of a vocabulary
§ The original semantics have to be followed
17. What makes a good vocabulary ?
Ø A good vocabulary is a used vocabulary
§ Data published on CKAN give an idea of vocabulary usage
§ Exemple :
list of datasets using FOAF http://xmlns.com/foaf/0.1/
Ø Other usability criterias
§ Simplicity and readability in natural language
§ Elements documentation (definition in natural language)
§ Visibility and sustainability of the publication
§ Flexibility and extensibility
§ Sémantic integration (with other vocabularies)
§ Social integration (with the user community)
18. A vocabulary is also a community
Ø Bad (but common) practice
●
Build a lonely vocabulary
– For example as a research project
– Without basing it on any existing vocabulary
§ To publish it (or not) and then to forget about it
§ Not to care about its users
Ø A good vocabulary has an organic life
§ Users and use cases
§ Revisions and extensions
§ Like a « natural » vocabulary
19. Types of vocabularies
Ø Metadata vocabularies
§ Allowing to annotate other vocabularies
• Dublin Core, Vann, cc REL, Status, Void
Ø Reference vocabularies
§ Provide « common » classes and properties
• FOAF, Event, Time, Org Ontology
Ø Domain vocabularies
§ Specific to a domain of knowledge
• Geonames, Music Ontology, WildLife Ontology
Ø « general » vocabularies
§ Describe « everything » at an arbitrary detail level
• DBpedia Ontology, Cyc Ontology, SUMO
20. Vocabulary of a Friend
Ø http://www.mondeca.com/foaf/voaf
Ø A simple vocabulary...
Ø To represent interconnexions between vocabularies
Ø A unique entry point to vocabularies and Datasets of
the linked-data cloud Linked Data Cloud
Ø Ongoing work in Datalift
22. Reference datasets, URI design
● Providing reference datasets for the French
ecosystem: geographical, topological, statistical,
political
● Providing URI design guidelines
● Opaque or transparent URIs ?
● Usage of accents in URIs
● Distinction between
Resources: http://dbpedia.org/resource/Paris
Documents: http://dbpedia.org/page/Paris
Data: http://dbpedia.org/data/Paris
… All served with content negociation
24. Direct Mapping from relational database to RDF
Define a standard transformation from a relational
database to RDF
The relational schema is used :
• Cells of a tuple produce triples with a common subject
• Each cell produces an object
• Different tables of a same database are thus linked together
Standard automatic translation of any relational schema to RDF,
based on the database Dump
Then we can SPARQL CONSTRUCT to adapt vocabularies and
URIs.
26. Exemple
@base <http://book.example/> .
<Book/ID=0006511409X#_> a <Book> ;
<Book#ISBN> "0006511409X" ;
<Book#Title> "The Glass Palace" ;
<Book#Year> "2000" ;
<Book#Author> <Author/ID=id_xyz#_> .
<Author/ID=id_xyz#_> a <Author> ;
<Author#ID> "id_xyz" ;
<Author#Name> "Ghosh, Amitav" ;
<Author#Homepage> "http://www.amitavghosh.com" .
Simple result but not satisfaying:
● we want to use different vocabulary terms (like a:name)
● the direct mapping produces literal objects most of the time, except when there is
a “jump” from one table to another
● the resulting graph should use a blank node for the author, which is not the case
in the generated graph
Credits Ivan Herman: http://ivan-
herman.name/2010/11/19/my-first-mapping-from-
direct-mapping/ 26
27. Exemple
Solution : use SPARQL 1.1 Construct queries
CONSTRUCT {
?id a:title ?title ;
a:year ?year ;
a:author _:x .
_:x a:name ?name ;
a:homepage ?hp .
}
WHERE {
SELECT (IRI(fn:concat("http://...",?isbn)) AS ?id)
?title ?year ?name
(IRI(?homepage) AS ?hp)
{
?book a <Book> ;
<Book#ISBN> ?isbn ;
<Book#Title> ?title ;
<Book#Year> ?year ;
<Book#Author> ?author .
?author a <Author> ;
<Author#Name> ?name ;
<Author#Homepage ?homepage .
} 27
29. Datalift Platform
V1 to be released in September with expected features :
- Modular architecture
- Raw convertion module: Relational DB (DirectMapping approach, CSV,
XML (based on a user specified XSLT transformation)
- Selection module : LOV repository, automatic candidate vocabulary
proposal using ontology matching from the raw data schema, vocabulary
navigation tool, vocabulary usage metrics, sample data for each vocab
- Convertion (according to the schema) : RDF2RDF Convertion module
based on SPARQL construct (manual editing), Vocabulary mapping
facility (textual)
- Interlinking and Alignment : A Silk interface -- Integration of the
alignment API
- Publication Sesame API, informational vs non-informational resource 29
management.
32. Web of data and links
- Without links no web but data silos
- Many types of links : the edges of the Web of
data graph are labeled
- Some links are built during the selection phase :
reference datasets
- We study here a particular type of links :
equivalence links.
32
33. owl:sameAs
- points to a logical identity between two resource
- The quality of the available links is not always
optimal
Other types of links : owl:differentFrom,
rdfs:seeAlso
33
41. Towards automatic interlinking
We have seen some of the Silk spec fields could be
avoided
- Using alignments between ontologies
- Detecting discriminating properties
- Indicating comparison methods by attaching metadata
to ontologies
-> … ongoing work in Datalift
41
44. Research objectives
§
Methods and metrics for selecting schemas
§
Tradeoff between specific and generic vocabularies
§
Data conversion and URI design patterns
§
Automatic data interlinking
§
Provenance and rights management
§
Integration, architecture and scalability
48. The french wider landscape
●
Regards Citoyens
●
Direction de l’information légale et administrative
●
Fédération des parcs naturels régionaux de France
●
Eurostat
●
Cities of Montpellier, Bordeaux, Rennes, …
●
Data Publica
●
EtatLab
55. Credits
This presentation was realized thanks to the work of the Datalift team.
It can be freely distributed under Creative Commons licence BY-NC-SA 3.0
55