Analysis of the Potential of Selected Big Data Repositories as Data Sources for Official Statistics NTTS 2015 New Techniques and Technologies for Statistics Petrakos M., Santourian A., Farmakis G., Stavropoulos P., Oikonomopoulou G., Ntakou E. Trampeli A. NTTS, March2015
Big data and official statistics NTTS, March 2015 NTTS, March 2015 2
Big data: VISULIZE ACTIVITIES WITH TIMELINES! A potential source for official statistics? Big data paradigm shift... Official Challenge Big data statistics Can Big Identify Define Define Collect Answer Answer data available questions questions data used? data
Automatic Identification System (AIS) Gross Vessel tonnage of traffic vessels Gross weight of Emissions goods Vessel statistics can be replaced Target population restrictions Better coverage, timeliness, accuracy Data for vessel characteristics may Reduction of response burden be missing NTTS, March 2015 4
Real estate advertisements Advertisements for house sales and Rentals Coverage errors: • What can be produced? Dwellings not yet built are advertised Housing price index and PPPs related • to rental and owner occupied Missing information: • housing List price stated by the owner instead of Owner occupied housing sub-index of • the actual sale price the HICP NTTS, March 2015 5
Social media messages Keywords Status updates, Sentiment expressing Sentiment Index tweets analysis emotions Well-being Sentiment information 400 MILLION Sentiment index can complement official tweets each day statistics 45 MILLION Coverage issues (location identification, status age, sex) updates each day Creation of domain-specific thesaurus NTTS, March 2015 6
Government financial transparency portal RELATED OFFICIAL STATISTICS Government expenditure Main revenue and expenditure items of the general government General government total expenditure and revenue SWOT A primary source for statistics where coverage is complete NTTS, March 2015 7
Visa Transaction Data 419 MILLION Visa more than Related official statistics cards in 1.5 Europe MILLIONS Household consumption expenditure are spent on Visa cards EVERY MINUTE Outcome • Flash estimates about structure and amount of consumption expenditure • Similar index is already produced by Visa • Robust indication of real consumer spending trends NTTS, March 2015 8
Recommend
More recommend
