Sökning: "comparison of pre-processing methods"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden comparison of pre-processing methods.

1. 1. Extreme Value Analysis of Huge Datasets: Tail Estimation Methods in High-Throughput Screening and Bioinformatics

   Författare :Dmitrii Zholud; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Extreme Value Statistics; High-Throughput Screening; HTS; Bioinformatics; analysis of huge datasets; quality control; correction of theoretical p-values; comparison of pre-processing methods; SmartTail; estimation of False Discovery Rates; test power; distribution tail; high level excursions; quantile estimation; multiple testing; Student t−test; Welch statistic; small sample sizes; F−test; Wiener process; Gaussian random walk; Shepp statistic; limit theorems; exotic options.; estimation of False Discovery Rates;

   Sammanfattning : This thesis presents results in Extreme Value Theory with applications to High-Throughput Screening and Bioinformatics. The methods described here, however, are applicable to statistical analysis of huge datasets in general. The main results are covered in four papers. LÄS MER

3. 2. Applications of statistical methods in quantitative magnetic resonance imaging

   Författare :Patrik Brynolfsson; Anders Garpebring; Tufve Nyholm; Eirik Malinen; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Quantitative imaging; tumor imaging; dynamic contrast-enhanced MRI; diffusion weighted MRI; texture analysis; radiofysik; radiation physics;

   Sammanfattning : Magnetic resonance imaging, MRI, offers a vast range of imaging methods that can be employed in the characterization of tumors. MRI is generally used in a qualitative way, where radiologists interpret the images for e.g. diagnosis, follow ups, or assessment of treatment response. LÄS MER

4. 3. Imaging and analysis methods for automated weld inspection

   Författare :Patrik Broberg; Tadeusz Stepinski; Högskolan Väst; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Welding; materials; Manufacturing and materials engineering; Produktions- och materialteknik; Experimental Mechanics;

   Sammanfattning : All welding processes can give rise to defects, which weakens the joint and can eventually lead to the failure of the welded structure. In order to inspect welds for detects, without affecting the usability of the product, non-destructive testing (NDT) is needed. LÄS MER

5. 4. Who knows what tomorrow will bring? : Four papers on the prediction of contentious politics

   Författare :David Randahl; Håvard Hegre; Espen Geelmuyden Rød; Måns Thulin; Bear Braumoeller; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Peace and Conflict Research; Freds- och konfliktforskning;

   Sammanfattning : In the last decade advances in statistics, computing power, and data collection has led to an increased interest in forecasting within the field of peace and conflict research and to the adoption of a wide range of methodological approaches for making such forecasts. By making use of these more powerful forecasting methods researchers have been able to produce accurate predictions, as well as better inferences, of many different types of contentious politics events and to create operational early warning systems for such events. LÄS MER

7. 5. Reconstruction of geometric road data using remotely sensed imagery

   Författare :Dan Klang; KTH; []
   Nyckelord :;

   Sammanfattning : The objective of this thesis is to find an automatic methodfor accurate and robust reconstruction of geometric road data.Remotely sensed images serve as the main source during thereconstruction process. LÄS MER