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Partners
Istituto Nazionale di Statistica (ISTAT) Italy
Institut National de la Statistique France et des Etudes Economiques (INSEE) France
Statistisches Bundesamt (DESTATIS) Germany
Centraal Bureau voor de Statistiek (CBS) Netherlands
Statistisk Sentralbyrå (SSB) Norway
Główny Urząd Statystyczny (GUS) Poland
Instituto Nacional de Estadística de España (INE) Spain
Office for National Statistics (ONS) United Kingdom
Swiss Federal Statistical Office (FSO) will soon join the project
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Description of the Project
The main purposes of the ESSnet on Small Area Estimation (SAE) project are:
reassess SAE methods and experiences;
follow up existing academic projects, with particular focus on assimilating and applying SAE methods to survey data;
disseminate knowledge among NSIs;
provide tools and recommendations useful to allow the production of small area estimates.
The different phases of the project are a series of theoretical and applicative activities in order to facilitate and promote the use of small area techniques in the production of statistical information.
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The results of the ESSnet project will be helpful
to detect the best practises
to define the guidelines to be followed for the applications of SAE
to give some advices for software tools users.Dissemination of results is another important step of the ESSnet project, therefore a web-site will be available in order to
share information and the results among the partners
be a forum platform in order to boost the communication among NSIs willing to apply SAE methods.
Description of the Project
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WP1 - Project management
WP2 - State of the artThe WP2 is aimed to provide a comprehensive overview of small area estimation in the ESS social surveys with respect to implementation, needs and expectations.
WP3 - Quality assessmentThe WP3 is aimed to review and develop suitable criteria to assess the quality of SAE methods.
WP4 - Software tools The WP4 is aimed to developed specific software tools, mainly in open source languages, starting from the available software produced in EURAREA and BIAS project.
The project is composed by 7 work-packages:
Description of the Project
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WP5 - Case studies The activities of this WP will be focused on specifying for each of the main survey framework a sub-set of the SAE methods. Relevant tools for diagnostics, identified in WP3, will be applied and case studies will be the ground for training the software or routines identified in WP4.
WP6 - Guidelines and recommendations The WP6 is aimed to summarise the activities and the results produced in the previous WPs so to provide practical guidelines in ESS social surveys context.
WP7 - Transfer of knowledge and knowhow The WP7 is aimed to transferring knowledge and know how to non participating NSIs and dissemination of results through a course and coaching.
Description of the Project
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Basic diagram:
U = population Ui = ith small area s = sample from U
The part of the sample s that falls in the small area Ui is si = Ui ∩ s
The size ni of si is usually random
SAE Core
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When to use SAE methods:
Whenever direct estimates based only on the sampling units observed for
each small area are not reliable (small sample size or sometimes even no
observed units)
How to use SAE methods:
By means of explicit or implicit modelling
When and How?
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How does SAE work? Borrowing Strength
Borrowing Strength from?
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SAE is a collection of different methods:
synthetic methods, composite methods;
design based methods, model based methods;
fixed models, mixed models;
linear models, non-linear models;
methods based on models with spatial and/or temporal correlation structures;
…
SAE methods
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Definitions of problems: how can RL or SM be useful for SAE?
Sharing methods: can the tools developed for SM and RL be already useful for SAE? Viceversa?
Tackling new common problems together: are there unexplored areas where we can work together?
For instance, increasing the available auxiliary information making use of SM
Possible outcomes joint documents for the two ESSnets Presentations on the ESSnet-DI workshop (Madrid,
November 2011)
Connections between SAE and DI?