2012. október 1., hétfő

Digitális Föld: az elképzeléstől a gyakorlatig: értelmet adni a közösségi adatgyűjtésnek

Mai postánkból. Kate Lance PhD (Yale Egyetem)  hívja fel a figyelmet az IJDE alábbi szakcikkére. Hazai eredményeknek az IJDE-ben való publikálását szorgalmazta a HUNAGI felhívása a múlt heti Fény-Tér-Kép Konferencián is.
Digital Earth from vision to practice: making sense of citizen-generated content
International Journal of Digital Earth
Volume 5, Issue 5, 2012
The vision of Digital Earth (DE) put recently forward under the auspices of the International Society for DE extends the paradigm of spatial data infrastructures by advocating an interactive and dynamic framework based on near-to-real time information from sensors and citizens. This paper contributes to developing that vision and reports the results of a two-year research project exploring the extent to which it is possible to extract information useful for policy and science from the large volumes of messages and photos being posted daily through social networks. Given the noted concerns about the quality of such data in relation to that provided by authoritative sources, the research has developed a semi-automatic workflow to assess the fitness for purpose of data extracted from Twitter and Flickr, and compared them to that coming from official sources, using forest fires as a case study. The findings indicate that we were able to detect accurately six of eight major fires in France in the summer of 2011, with another four detected by the social networks but not reported by our official source, the European Forest Fire Information Service. These findings and the lessons learned in handling the very large volumes of unstructured data in multiple languages discussed in this study provide useful insights into the value of social network data for policy and science, and contribute to advancing the vision of DE.
Keywords: Digital Earth, social networks, volunteered geographic information, data quality
Source: Legal-Socioecon mailing list
http://lists.gsdi.org/mailman/listinfo/legal-socioecon "

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About the LAPSI project

LAPSI is a project in the FP7 program of the European Union.
Legal Aspects of the Public Sector Information and Re-use.
Timespan: 30 months. Participants: 20 institutions and organistions. Coordinator: University of Torino.
Kick-off Meeting: Torino, 26-28 March, 2010

Role of HUNAGI in the LAPSI Project

HUNAGI contribution is related mainly to the Geographic Information which are produced, maintained and used in land management, including surveying, mapping, cadastre and land registration, remote sensing and serviced by relevant spatial data infrastructures. From a national economic point of view, the uniform land registration system operating in Hungary is one of the most important databases of the country. This system allows to obtain over the time updated legal and geometric data, as well as other information (e.g. on ownership, land uses, mortgages, etc.). The cadastral maps integrated into the uniform land registration system show spatial relations and references of rights, facts and other information appearing on the property sheets, serving as a basis of engineering planning for the national economy. The national spatial data infrastructure can be built on this uniform, authorized and public land registration system, in small partial modules, following the EU INSPIRE Directive. HUNAGI will participate to all Working Groups and actively take part to Working Groups 01, 03 and 04. It also makes its facilities available to host one of the thematic network seminars or conferences.

About the HUNAGI Team of the LAPSI Project

Team members:
Piroska Zalaba (FvM FTF www.fvm.hu), dr. Szabolcs Mihály (FÖMI www.fomi.hu), dr.József Mlinarics (MATISZ www.matisz.hu), Ferenc Hargitai (MATISZ www.matisz.hu), István Sponga (Neumann-Ház Nonprofit Kft www.neumann-haz.hu), Dr. Tamás A. Kovács (Dr. Kovács A. Tamás Ügyvédi Iroda www.kovacsatamasiroda.hu), Dr. Gábor Remetey-Fülöpp, Team leader (HUNAGI www.hunagi.hu)

Barkóczi Zsolt (HUNAGI www.hunagi.hu), Tóth Sándor (FVM FTF www.fvm.hu)
Klóser Anikó (Meh EKK www.ekk.meh.gov.hu), dr. Marosán Andrea (MeH EKK), dr. Csiszér Gábor (MeH EKK)
Temporal replacements: Éva Harbula for Dr. Szabolcs Mihály (FÖMI)

About the Team Leader

Gabor Remetey-Fülöpp is Secretary General of Hungarian Association of Geo- information/HUNAGI. He holds a degree in Civil Engineering (Budapest) and a second diploma in automation in geodesy. Among his numerous experiences he has been part of the EU Acquis-related institutional development project (1998-2006), of the EC INSPIRE Experts Team (2001-2006), and of the Drafting Team, National SDI Strategy (2004-2006). He also took part to ePSIplus activities.