Two central criteria for data quality are consistency and accuracy. Inconsistencies and errors in a database often emerge as violations of integrity constraints. Given a dirty database D, one needs automated methods to make it consistent, i.e., find a repair D that satisfies the constraints and “minimally” differs from D. Equally important is to ensure that the automatically-generated repair D ...

Automated In-process Software Engineering Measurement and Analysis (AISEMA) systems are powerful tools to monitor and improve the software development process. However, to be useful, it is required that such tools never stop working. Therefore, they need the support of advanced monitoring systems able to detect and locate malfunctions and inform automatically human operators providing all the i...

 Analysis of the characteristics of precipitation fields;  Sampling of precipitation fields at different regular and irregular steps of grid and different time intervals;

A new peak picking algorithm for the analysis of mass spectrometric (MS) data is presented, which is independent of the underlying machine or ionization method and is able to resolve highly convoluted and asymmetric signals. The method uses the multiscale nature of spectrometric data by first detecting the mass peaks in the wavelet-transformed signal. Then, a given asymmetric peak function is f...

This paper presents an investigation of the geometric quality of depth data obtained by the Kinect sensor. Based on the mathematical model of depth measurement by the sensor a theoretical error analysis is presented, which provides an insight into the factors influencing the accuracy of the data. Experimental results show that the random error of depth measurement increases with increasing dist...

The accuracy of maps based on aggregate data is dependent upon (a) the extent to which aggregate values calculated for each enumeration unit are representative of the entire unit and, (b) the data classification system used to assign these values to classes. Size and compactness of these units as well as the variability of the distribution mapped are important factors in determining the accurac...

This paper presents the development of a QGIS plugin to support evaluating planimetric positional quality for point and linear features based on metrics established by Brazilian legislation. For this purpose, we used environment Graphical Modeler, which consists an interface concatenate series processes into single algorithm. The set tools, called QPEC, allows performing statistical tests from ...