Zoekresultaten
Resultaat 1 - 20 (van 28)
A.G. de Waal Processing of erroneous and unsafe data
Statistical offices have to overcome many problems before they can publish reliable data. Two of these problems are examined in this thesis. The first problem is the occurrence of errors in the collected data. Due to these errors publication figures cannot be directly based on the collected data. Before publication the errors in the data have to be localised and corrected. In this thesis we focus on the localisation of errors in a mix of categorical and numerical data. The problem is formulated as...
Non-fictie
Engels | 413 pagina's | Erasmus Research Institute of Management (ERIM), Erasmus University Rotterdam, [Rotterdam] | 2003
Gedrukt boek
A.G. de Waal A brief overview of imputation methods applied at Statistics Netherlands
Non-fictie
Engels | 12 pagina's | Statistics Netherlands, Voorburg | 1999
Gedrukt boek
A.G. de Waal An overview of statistical data editing
This paper gives an overview of statistical data editing. The paper first describes the traditional interactive approach to data editing. It then focuses on modern editing techniques, such as selective editing, automatic editing, and macro-editing. The paper aims to provide an introduction to these topics, and give many references to the literature
Non-fictie
Engels | 43 pagina's | CBS, Statistics Netherlands, The Hague [etc.] | 2008
Gedrukt boek
A.G. de Waal A simple branching scheme for solving the error localisation problem
This paper presents a new algorithm for solving the error localisation problem for the mix of continuous and categorical data. This algorhitm is based on constructing a binary search tree
Non-fictie
Engels | 20 pagina's | Statistics Netherlands, Voorburg [etc.] | 2003
Gedrukt boek
Ronan Quere | A.G. de Waal Error localization in mixed data sets
Non-fictie
Engels | Statistics Netherlands, Voorburg | 2000
Gedrukt boek
A.G. de Waal | Hans Wings From CherryPi to SLICE
Non-fictie
Engels | 10 pagina's | CBS, Statistics Netherlands, Voorburg | 1999
Gedrukt boek
A.G. de Waal Improvements on Pergamentsev's algorithm for automatic error localisation in general data
Non-fictie
Engels | 16 pagina's | CBS, Voorburg | 1998
Gedrukt boek
A.G. de Waal On two conjectures concerning linked tables
Non-fictie
Engels | 6 pagina's | CBS, Voorburg | 1998
Gedrukt boek
A.G. de Waal An introduction to CherryPi and MacroView
Non-fictie
Engels | 18 pagina's | CBS, Voorburg | 1998
Gedrukt boek
A.G. de Waal | F.J.R. van de Pol A recipe for applying CHERRYPI in the edit process
Non-fictie
Engels | 8 pagina's | Statistics Netherlands, Voorburg | 1997
Gedrukt boek
Maaike Vonk | J. Pannekoek | A.G. de Waal Development of (automatic) error localisation strategy for the ABI and EPE Data
Non-fictie
Engels | 41 pagina's | Statistics Netherlands, Voorburg | 2003
Gedrukt boek
J. Pannekoek | A.G. de Waal Automatic edit and imputation for business surveys: the Dutch contributions to the Eurodit project
Paper describes the general approach applied by Statistics Netherlands on the two business surveys used in the Euredit project, and the development of the edit and imputation strategy. Furthermore the paper provides results of the approach on the two evaluation data sets, and compares these results to the results of the other institutes participating in Euredit
Non-fictie
Engels | 33 pagina's | Statistics Netherlands, Voorburg [etc.] | 2003
Gedrukt boek
A.G. de Waal An algorithm for solving the error localisation problem in general data based on cutting planes
Non-fictie
Engels | 26 pagina's | Statistics Netherlands, Voorburg | 2002
Gedrukt boek
A.G. de Waal Algorithms for automatic error localisation and modification
Non-fictie
Engels | 23 pagina's | CBS, Voorburg | 2002
Gedrukt boek
A.G. de Waal Development of modern edit and imputation methods at Statistics Netherlands
Non-fictie
Engels | 13 pagina's | Statistics Netherlands, Voorburg | 2002
Gedrukt boek
A.G. de Waal Potential improvements in LEO/Cherrie Pie and ECS
Non-fictie
Engels | 23 pagina's | Statistics Netherlands, Voorburg | 2001
Gedrukt boek
A.G. de Waal Automatic edit and imputation in categorical continuous and integer data
Non-fictie
Engels | 33 pagina's | Statistics Netherlands, Voorburg | 2001
Gedrukt boek
A.G. de Waal | Jos de Waard | Rogier Plomp Manual WAID (4.1)
Non-fictie
Engels | 39 pagina's | Statistics Netherlands, Voorburg | 2001
Gedrukt boek
A.G. de Waal SLICE: generalised software for statistical data editing and imputation
Statistical offices have to face the problem that data collected by surveys or obtained from administrative registers generally contain errors as well as the problem that values in data sets obtained from these sources may be missing. To handle such errors and missing data efficiently Statistics Netherlands is currently developing a software package, called SLICE (Statistical Localisation. Imputation and Correction of Errors). SLICE will contain several edit and imputation modules. Examples are a...
Non-fictie
Engels | 7 pagina's | Statistics Netherlands, Voorburg | 2000
Gedrukt boek
A.G. de Waal An optimality proof of Statistics Netherlands' new algorithm for automatic editing of mixed data
Non-fictie
Engels | 13 pagina's | Statistics Netherlands, Voorburg | 2000
Gedrukt boek