1. ESS guidelines on temporal disaggregation by Dario Buono dario
ESS guidelines on temporal disaggregation by Dario Buono (Eurostat, Unit B1 Methodology)
National Accounts Working Group Luxembourg, May 2017 Item 19

2. ESS Guidelines on TD Why? What for? How?
Methodology harmonization: the definition of best practices
What for?
Deriving consistent high (Q/M) frequency data from low frequency (A/Q) data
How?
Estimation methods with
quality measures

3. ESS Guidelines on TD Who? When? Where? All infra-annual data producers
Regular production and revision analysis
Where?
Stand-alone and remote solution

4. Framework
The ESS Guidelines on TD present both theoretical aspects and practical implementation issues in a user-friendly way
Methods
Specific domains
Revisions
Quality and documentation.
CoP requirements are satisfied
principle 7 (Sound Methodology)
principles 14 (Coherence and Comparability) 15 (Accessibility and Clarity)

5. Approach
Common Guidelines for Temporal Disaggregation within the ESS as essential step for a better harmonization and comparability of infra-annual statistics
Each stage of Benchmarking and Reconciliation process is explained and options described.
Out of these options three alternative courses of action are highlighted:
(A) Best alternative (B) Acceptable (C) To be avoided

6. Guidelines summary
PRINCIPLES FOR BENCKMARKING AND RECONCILIATION 1 - POLICY FOR BENCKMARKING AND RECONCILIATION 2 - TEMPORAL DISAGGREGATION 3 - SPECIFIC ISSUES ON BENCKMARKING AND RECONCILIATION 4 – SPECIFIC DOMAINS  5 - REVISION POLICIES 6 - ACCURACY OF BENCKMARKING AND RECONCILIATION

7. Item 4.1: Benchmarking and reconciliation in National Account
QNA variables must be temporally consistent with annual benchmarks and respect the contemporaneous constraint (aggregates vs. components). This is very much demanded by users.
Statistical methods for deriving QNA estimates are:
Methods when only annual estimates are available,
Methods that uses proxy indicators
Available methods:
Chow and Lin and variants
Denton and variants

8. Roadmap 2017 March, SA Expert Group, some NSIs & NCBs
2017 April, WG Methodology Discussion (all MS)
2017 May, WG National Accounts (all MS)
2017 May-September, dedicated Task Force
2018 February, DIME/ITDG
2018 ESSC endorsement

9. Current Member of the TF on Temporal Disaggregation
Eurostat: Dario Buono (Methodology), Riccardo Gatto (Labour Market), Enrico Infante (National Accounts)
AT: Markus Fröhlich (Methodology)
CZ: Karel Safr (National Accounts), Ondrej Vozar (Methodology)
DK: Peter Stoltze (Methodology)
IT: Barbara Gualdabascio (Methodology)
NL: Mark Van Der Loo (Methodology)
SE: Suad Elezovic (Methodology)
UK: Duncan Elliot (Methodology)

10. …open points to kick-off the discussion
Any suggestion for the overall structure?
Is it needed to have devoted chapter for National Accounts and Labour Market?
Should we include higher frequency data (e.g. weekly or daily)?
What about the chapters on metadata and data presentation issues?
Any comment about the part on revisions?
Shall we quote the tools to be used?
Interested in joining the Task Force?