Tiziana Tuoto

Italian National Institute of Statistics

The use of mixture models for estimating the size of an elusive population when capture rates vary among individuals has received strong attention from researchers. In this paper we propose a Bayesian semi-parametric approach by considering a truncated infinite dimensional Poisson mixture model for capture recapture count data. An application in of...

The identification and treatment of “one‐inflation” in estimating the size of an elusive population has received increasing attention in capture–recapture literature in recent years. The phenomenon occurs when the number of units captured exactly once clearly exceeds the expectation under a baseline count distribution. Ignoring one‐inflation has se...

Record linkage is a data integration technique whose goal is to identify the same unit represented in different data sources in different ways. Deterministic linkage and probabilistic linkage are two linkage techniques that have been already widely used. The goal of this paper is to show how a record linkage procedure based on a probabilistic appro...

Record linkage is a data integration technique whose goal is to identify the same unit represented in different data sources in different ways. Deterministic linkage and probabilistic linkage are two linkage techniques that have been already widely used. The goal of this paper is to show how a record linkage procedure based on a probabilistic appro...

Household finance surveys, which collect detailed information on household income and wealth, are increasingly used for policy-making. They should provide an accurate picture of the economic situation of all households. Unfortunately, the upper parts of the wealth distribution are often missing in household surveys. Since rich households concentrat...

In Official Statistics, interest in data integration has grown enormously, but the effect of integration procedures on statistical analysis has not yet been sufficiently developed. Data integration is not an error-free procedure and linkage errors, as false links and missed links can invalidate standard estimates. Recently, increasing attention has...

Data linkage is increasingly being used to combine data from different sources with the aim of identifying and bringing together records from separate files, which correspond to the same entities. Usually, data linkage is not a trivial procedure and linkage errors, false and missed links, are unavoidable. In these cases, standard statistical techni...

The MAKSWELL project was set up to help strengthening the use of evidence and information on well-being and sustainability for policy-making in the EU, as also the political attention to well-being and sustainability indicators has been increasing in recent years. Traditionally sample surveys are the data source used for measurement frameworks for...

Record linkage aims at quickly and accurately identifying if two records represent the same real world entity. In many applications, we are interested in restricting the linkage results to "1 to 1" links, that is a single record does not appear more than once in the output. This can be dealt with the transport algorithm. The optimization problem, h...

Data integration is now common practice in official statistics and involves an increasing number of sources. When using multiple sources, an objective is to assess the unknown size of the population. To this aim, capture-recapture methods are applied. Standard capture-recapture methods are based on a number of strong assumptions, including the abse...

Linkage of different data sources is an intermediate step in many statistical processes. When dealing with data resulting from a record linkage process, it should be considered that the linkage is affected by two types of errors: false links and missed matches. If the linkage errors are not properly taken into account, i.e. standard statistical pro...

In Official Statistics, interest for data integration has been increasingly growing, due to the need of extracting information from different sources. However, the effects of these procedures on the validity of the resulting statistical analyses has been disregarded for a long time. In recent years, it has been largely recognized that linkage is no...

Official statistics has acknowledged the value of big data and has started exploring the use of diverse sources in several domains. Sometimes, big data objects can be easily connected to statistical units. If a unit identifier is available, the opportunity to link big data to existing statistical micro data can allow enlarging the content, the cove...

In Official Statistics, interest for data integration has been increasingly growing, though the effect of this procedure on the statistical analyses has been disregarded for a long time. In recent years, however, it is largely recognized that linkage is not an error-free procedure and linkage errors, as false links and missed links can invalidate s...

Overview of Istat experiments on the use of new sources of data for statistical production, in particular Internet data sources (Internet queries, social networks, websites) Focus on the ICT in Enterprises survey First results of this combined use of survey data and data from the Internet are illustrated Illustration of open source software employe...

The combined use of data from different sources is an opportunity that the National Statistical Institutes exploit more and more frequently. In a context where huge amount of information, produced by different actors, can be integrated and compared, it becomes even more necessary to provide quality assessments of methods and techniques that have al...

The Capture-recapture method is a well-known solution for evaluating the unknown size of a population. Administrative data represent sources of independent counts of a population and can be jointly exploited for applying the capture-recapture method. Of course, administrative sources are affected by over- or undercoverage when considered separately...

RELAIS (REcord Linkage At IStat) is a toolkit providing a set of techniques for dealing with record linkage projects. The principal features of RELAIS are: a) the combination of different techniques for each of the record linkage phases, so that the resulting work-flow is actually built on the basis of application and data specific requirements; b)...

The combined use of data from different sources is largely widespread. Record linkage is a complex process aiming at recognizing the same real world entity, differently represented in data sources. Many problems arise when dealing with large data-sets, connected with both computational and statistical aspects. The well-know blocking methods can red...

The combined use of statistical survey and administ rative data is largely widespread to maximize their respective usefulness: unfortunately data sources are often hard to integrate due to errors or lacking informat ion. Record linkage techniques are a multidisciplinary set of methods and practices aimi ng to identify the same real world entity, di...

Riassunto: Molte indagini campionarie hanno come obiettivo la produzione di stime per una pluralità di parametri e per diversi domini pianificati, definiti da partizioni non annidate della popolazione. Un approccio standard è quello di progettare un disegno stratificato in cui gli strati sono ottenuti combinando le diverse partizioni della popolazi...

Record linkage has been subject of research for several decades, and a huge number of record linkage solutions have been proposed, based on probabilistic and empirical paradigms. However, record linkage is a complex process, for the execution of which one single technique is often not enough; it can be seen as composed by distinct phases, each requ...

Riassunto: L'Indagine sull'Approvvigionamento di Acqua Potabile e sul Servizio di Fognatura e Depurazione è una delle rilevazioni del Sistema delle Indagini sulle Acque del 1999 (SIA99) con lo scopo di verificare il soddisfacimento dell'approvvigionamento idrico. L'indagine ha come unità di rilevazione i Comuni e presenta un certo numero di mancate...

Riassunto: L'Indagine sull'Approvvigionamento di Acqua Potabile e sul Servizio di Fognatura e Depurazione è una delle rilevazioni del Sistema delle Indagini sulle Acque del 1999 (SIA99) con lo scopo di verificare il soddisfacimento dell'approvvigionamento idrico. L'indagine ha come unità di rilevazione i Comuni e presenta un certo numero di mancate...

The combined use of statistical survey and administrative data is largely widespread to maximize their respective usefulness: unfortunately data sources are often hard to integrate due to errors or lacking information. Record linkage techniques are a multidisciplinary set of methods and practices aiming to identify the same real world entity, diffe...