Sökning: "OUTLIERS"

Visar resultat 1 - 5 av 82 avhandlingar innehållade ordet OUTLIERS.

  1. 1. IMPROVED SAFETY AND QUALITY OF CARE FOR PATIENTS WITH A HIP FRACTURE Intervention Audited by the National Quality Register RIKSHÖFT

    Författare :Ami Hommel; Institutionen för hälsovetenskaper; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; reumatologi; Gerontology; muskelsystem; Skelett; rheumatology locomotion; Skeleton; muscle system; Pressure ulcers; Nutritional status; Complicationss; Outliers; Medicine human and vertebrates ; Medicin människa och djur ; Quality of care; Safety; Hip fracture; Gerontologi;

    Sammanfattning : Aim: Hip fractures are common and costly. The overall aim of this thesis was to explore how different clinical pathways influence safety and quality of care among patients with a hip fracture and to test the usefulness of the national quality register RIKSHÖFT as a working tool. LÄS MER

  2. 2. Model-based outlier adjustments for samples from skewed populations

    Författare :Olivia Ståhl; Dan Hedlin; Daniel Thorburn; Carl-Erik Särndal; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Survey sampling; outliers; value modification; winsorization; statistik; Statistics;

    Sammanfattning : Many populations encountered in practice are skewed to the right and contain a couple of values which are much larger than the bulk of the data. Using standard estimators to estimate for example the mean value of such a population is likely to result in a large variance. LÄS MER

  3. 3. Robust Algorithms for Multiple View Geometry: Outliers and Optimality

    Författare :Olof Enqvist; Matematik LTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis is concerned with the geometrical parts of computer vision, or more precisely, with the three-dimensional geometry. The overall aim is to extract geometric information from a set of images. Most methods for estimating the geometry of multiple views rely on the existence of robust solvers for a set of basic problems. LÄS MER

  4. 4. Issues of incompleteness, outliers and asymptotics in high dimensional data

    Författare :Peter S. Karlsson; Thomas Holgersson; Ghazi Shukur; Åke E. Andersson; Jönköping University; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Business and economics; Ekonomi;

    Sammanfattning : This thesis consists of four individual essays and an introduction chapter. The essays are in the field of multivariate statistical analysis of High dimensional data. The first essay presents the issue of estimating the inverse covariance matrix alone and when it is used within the Mahalanobis distance in High-dimensional data. LÄS MER

  5. 5. Frequency Tracking for Speed Estimation

    Författare :Martin Lindfors; Rickard Karlsson; Gustaf Hendeby; Fredrik Gustafsson; Tomas McKelvey; Linköpings universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Estimating the frequency of a periodic signal, or tracking the time-varying frequency of an almost periodic signal, is an important problem that is well studied in literature. This thesis focuses on two subproblems where contributions can be made to the existing theory: frequency tracking methods and measurements containing outliers. LÄS MER