Tag Archives: GeoSPARQL

GSTAR web services; now with added GeoJSON

"A boundary is an array of an array of an array of arrays" by Paul Downey

“A boundary is an array of an array of an array of arrays” by Paul Downey

Following on from the last update concerning the GSTAR web services, the final pieces of infrastructure for the case studies and demonstrator are nearly complete. Building on the API, a GeoJSON output format has been added so that results from GeoSPARQL queries can a) be accessed via a simple URL as with all other outputs and b) visualised using a web map or indeed any platform which can consume GeoJSON.  Continue reading

GSTAR Web Services

Web by David Reid

Web by David Reid

With all the source data prepped and ready to go, the next step is to build some demonstrators to show how such geosemantic resources can be used in practice. Whilst very powerful, a Sparql endpoint is not the most friendly way of interacting with data resources, especially from within a web based application where options for programming are a bit limited. There is still quite some debate on this topic which will be covered in more detail in the thesis (watch this space; still on track for submission 1st/2nd quarter 2016!) but the approach I have opted for is an API using web services to provide a range of outputs via a combination of URLs and parameters. Continue reading

Linked Data: From interoperable to interoperating

Piazza Mercato, Siena

Piazza Mercato, Siena

Videos of all the presentations in this CAA session, held in Siena 2015, which I blogged about earlier. Full credit and thanks due to Doug Rocks-Macqueen and his Recording Archaeology project for recording and making this and other sessions available (see also the session on ArchaeoFOSS and the keynotes). Thanks also to Leif Isaksen and Keith May for organising and chairing the session.

The session outline:

Linked Data and Semantic Web based approaches to data management have now become commonplace in the field of heritage. So commonplace in fact, that despite frequent mention in digital literature, and a growing familiarity with concepts such as URIs and RDF across the domain, it is starting to see fall off in Computer Science conferences and journals as many of the purely technical issues are seen to be ‘solved’. So is the revolution over? We propose that until the benefits of Linked Data are seen in real interconnections between independent systems it will not properly have begun. This session will discuss the socio-technical challenges required to build a concrete Semantic Web in the heritage sector.

The videos for the accepted papers:

  • The Syrian Heritage Project in the IT infrastructure of the German Archaeological InstitutePhilipp Gerth, Sebastian Cuy (video)
  • Using CIDOC CRM for dynamically querying ArSol, a relational database, from the semantic webOlivier Marlet, Stéphane Curet, Xavier Rodier, Béatrice Bouchou-Markhoff (video)
  • How to move from Relational to Linked Open Data 5 Star – a numismatic exampleKarsten Tolle, David Wigg-Wolf (video)
  • The Labeling System: A bottom-up approach for enriched vocabularies in the humanitiesFlorian Thiery, Thomas Engel (video)
  • From interoperable to interoperating Geosemantic resourcesPaul J Cripps, Douglas Tudhope (video)

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From interoperable to interoperating Geosemantic resources

Ospedale Psichiatrico - the conference venue, aka the Asylum...

Ospedale Psichiatrico – the conference venue, aka (rather appropriately, perhaps) the Asylum…


Following on from my earlier post on CAA2015, my presentation entitled From interoperable to interoperating Geosemantic resources is now available on YouTube thanks to Doug Rocks-Macqueen and his Recording Archaeology project. Indeed, there are a whole collection of presentations from the conference (and numerous others conferences) available, all thanks to Doug’s dedication; his work is a great asset to the community and the growing resource he is creating is of enormous benefit so all thanks due to Doug.
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GSTAR @ Computer Applications in Archaeology (CAA) 2015

Conference

Conference

Following on from my presentation at CAA2014 in Paris, I was invited to submit a paper to a session at CAA2015 covering Linked Data (LD) and focussing on the difference between being theoretically interoperable and interoperating in practice. Continue reading

Extending CRMEH with GeoSPARQL

One of the outputs from the Pilot Study was an approach to working with geospatial data within the broader framework provided by the CIDOC CRM ontology and the CRMEH archaeological extension. Whilst there is ongoing work by myself and others to add archaeological and spatio-temporal components directly to the CIDOC CRM, for the purposes of the GSTAR project, a lightweight approach has been developed and deployed to suit the needs of the project; CRMEH already adds archaeological excavation capabilities and the spatial extension presented here gives a range of geospatial capabilities, as provided by a mapping to GeoSPARQL.

Parential Advisory by Michel Dumontier

Parential Advisory by Michel Dumontier

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From MPhil to PhD; GSTAR update

After a longer than anticipated gestation, my Transfer Report has left my hands and is working its way through the administrative system to be externally examined. Fingers crossed, this is one of my last posts as an MPhil student and I will soon (post viva) be a PhD student proper.

Time for some celebratory fireworks!

Time for some celebratory fireworks!

The Transfer Report included a condensed form of the literature review and also a detailed report on Pilot Study. This Pilot Study was designed to lay sound foundations for the PhD research and involved implementing a system using geosemantic technologies, primarily to investigate ways in which semantic and geospatial data can work together but also to help me get to grips with the subject area and technologies available.

The full report will be made available in due course, once it has been examined (viva scheduled for end of November) and any corrections completed, but for now here is an update on some of the key findings of the Pilot Study and conclusions drawn.
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Colonisation of Britain

Colonisation of Britain Linked Data

Colonisation of Britain Linked Data

The Colonisation of Britain project was undertaken by Wessex Archaeology, commissioned by English Heritage, and involved the digitisation of the archive material of Roger Jacobi.

The project aimed to provide a comprehensive survey of the Upper Palaeolithic resource, with a pilot study of the Mesolithic in England involving three counties. A comprehensive survey of these periods (c.38,000-c 6500 BP) was considered of particular importance because many of the sites and find spots represent evidence for the recolonisation of Britain after the Last Glacial Maximum by hominid groups. Unlike earlier recolonisations this event is part of the most northerly early migration of social groups of anatomically modern humans.

The major primary source of data for the survey is the invaluable and extensive archive compiled over many years by the late Dr Roger Jacobi. Securing this archive was identified as a priority in itself. The project included the digitisation of the Jacobi Archive, both as an image dataset and as a structured relational database, enhanced with additional information from SMR/HERs.

One of the outputs from the project is a Linked Data version of the outputs and Archaeogeomancy were pleased to be commissioned to undertake this component. Continue reading

GSTAR: investigation of methods for working with geosemantic data, integrating geospatial data with semantic data

Mapping rubble by Brian Hoffman

Mapping rubble by Brian Hoffman

The first investigation in the GeoSemantic Technologies for Archaeological Research (GSTAR) research project is nearing completion, an assessment of approaches to the integration of geospatial archaeological data into a semantic framework to provide geosemantic capabilities.

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Geosemantics; the story so far

Semantic Web Rubik's Cube by dullhunk

Semantic Web Rubik’s Cube by dullhunk

Into the second month of the PhD now and things are starting to coalesce and take shape. A framework for development, testing and deployment of proposed demonstrators is emerging and I’m making good headway demystifying the world of geosemantics (at least, it’s becoming clearer in my head!).

So, as well as continuing with the literature review, I’m knitting together a whole bunch of tools:

  • Java Development Kit (JDK) – the programming language at the heart of it all
  • Maven – a project management and comprehension tool
  • Eclipse – open development platform
  • Jena – a Java framework for building Semantic Web applications
  • Oracle 11g – relational Database Management System (RDBMS) with Spatial and Semantic components
  • D2RQ – a system for accessing relational databases as virtual, read-only RDF graphs.
  • AllegroGraph – a graph database
  • Prolog – logic programming
  • Protégé – ontology editor and knowledge-base framework
  • GeoSPARQL – query language for geospatial data stored as RDF
  • ArcGIS – Geographic Information System for data preparation, processing, etc
  • GeoServer – open source GIS server written in Java that allows users to share and edit geospatial data.

I’ll be posting more along the journey. Next steps will be to complete the literature review, submit stage reports and use some real archaeological data. Exciting stuff!