INTEGRATING GIS WITH LINKED DATA

SPATIAL OBJECT OF INTEREST ON THE WEB

Adam IwaniakWroclaw University of Environmental and Life Sciences, Poland

Iwona Kaczmarek, Marek StrzeleckiThe Wroclaw Institute of Spatial Information and Artificial Intelligence, Poland

INSPIRE conference 2016, Barcelona 26th-30th, September

BENEFITS FROM INSPIRE FOR CITIZENS

• How often do you use INSPIRE data?• Do you have any INSPIRE data in your smartphone?• How many steps you need to use INSPIRE data?• How can you do this if you are not GIS expert user?

KEY QUESTIONS

• How to make spatial data more attractive ?• How to make spatial data more available and accessible on mobile devices?

• It is already more than 2 200 000 mobile applications on Google Store and the next one will probably not solve the problem.

INCREASE THE ATTRACTIVENESS OF DATA

1. Easily accessible, easy to discover structured data.2. In a manner that allows effective use, processing and 

integration.3. In a new human‐readable and machine‐readable

form.4. With added value:

• Enriched with new attributes and results from spatialanalyses.

• With better quality: completeness, logicalconsistency, thematic accuracy, positional accuracy, temporal accuracy .

• Integrated with metadata.• With links to other resources available on the Web.

LARGE INFORMATION POTENTIAL

• INSPIRE harmonised databases and geoportalscontain the information which allows gettinganswers for a lot of questions, which are importantfor citizens.

• Making spatial data more available and easy to use in your smartphone /Workshop SDW‐BP, Andrea Perego/.

(X)HTML + RDFa

A.Iwaniak, The INSPIRE Conference 2014, Aalborg, 16-20 June 2014

INSPIRE metadata in HTML + RDFa

August, 2016; https://pzgik.geoportal.gov.pl/semantic-metadata/

compliant with GeoDCAT-AP

GeoDCAT-AP

CONVERSION OF INSPIRE METADATA

THE ADVANTAGES

• With new representation, old metadata is available for web search engines.

• New form /human‐readable and machine‐readable / • Metadata is enriched with links to other resources:GEMET, GeoNames, DBpedia and metadata portals.

HOWEVER, citizens with their smartphones do not need metadatanor spatial data, they need answers for their questions.

RDF HTML+RDFa

Spatial Data Base

SOoI

Geoportal

GoogleIndexing

INSPIRE DATA IN HTML + RDF

SOoI – Spatial Object of Interest /point, line and area/

a

EXAMPLES

1. Wrocław – Sobótka (red trail) – CYCLE ROUTE2. St. Sigmund and St. Hedwig’s Church

HTML Metadata files include external links to objects locatedwithin predefined distance.

WROCŁAW – SOBÓTKA (RED TRAIL) –CYCLE ROUTE

St. Sigmund and St. Hedwig’s Church

ASSUMPTIONS

• There is no need for publishing all of the spatial objects. Onlyselected Spatial Objects of Interest (SOoI) such as: cycleroutes, parcels for sale, monuments, public administrationoffices.

• The key is to link data and metadata with other externalresources. Links can represent topological relations such as "nearby", "close to" or can be a reference to article publishedon the Web. 

• It is important to enrich metadata with additionalinformation, which can be the results of complex spatialanalyses such as insolation analysis, medium availability, distance to metro stations or parks.

• Attributes, links and enriched data available on web page arethe core metadata and indexing source for web searchengines.

CHALLENGES

• Depending on the purpose, one object can havemultiple HTML+RDFa pages, for example: describingbuilding as a historic building and the same buildingas a cultural institution or public administrationoffice. This means that one spatial object class can be represented with many metadata profiles.

• The challenge is to implement solutions which usethis data to deliver answers for common questions.

SPATIAL DATA TO RDF CONVERSION

Dxf, GMLfiles

Spatial Analysis

RDF RepositoryAllegroGraph

GeoMedia

SPARQL

RDFfiles

Import/export

SQLWIZIPISI

SemanticComponents

Import/export

DB

Graph Analysis

LINKING SPATIAL OBJECTSExampele of connecting churches from topographic databases with their counterparts from Dbpedia with RDF links.

DATA ENRICHMENT

OpenStreetMap + Dbpedia

• INSPIRE databases contain the information that allows gettinganswers for a lot of questions, which are important for citizens.

• However, creating semantic annotations manually is time-consuming and there is a little understanding of semantictechnologies among public bodies

• More intuitative tools are needed. WIZIPISI Semantic Components, designed as a bridge between geospatial domain and SemanticWeb.

• Only if data is open, creating HTML+RDFa metadata available on the Web are opportunity for value added reseller. If the data is"closed", public administration should be responsible for thisk task. Citizens should have the right to easily accessible public information.

CONCLUSIONS

Thank you for your attention

adam.iwaniak@gmail.com