Sökning: "Cox proportional hazards"

Visar resultat 1 - 5 av 36 uppsatser innehållade orden Cox proportional hazards.

  1. 1. Failure Probability and Lifetime Estimation for Industrial Robots : A Logistic Regression and Lifetime Analysis Approach

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för matematik och matematisk statistik

    Författare :Erik Fahlbeck Carlsson; Martin Herbert; [2023]
    Nyckelord :Lifetime Analysis; Logistic regression; Prediction; Lifetime estimation; Industrial robots; Livslängdsanalys; Logistisk regression; Prediktion; Livslängdsestimering; Industriella robotar;

    Sammanfattning : The ability to handle and process data for information extraction is getting more and more important. Using extracted data from the business to improve productivity is seen as an important part in developing the business processes. In this thesis, industrial robots and their survival times are analyzed. LÄS MER

  3. 2. Children’s education and parents’ mortality – Do parents with highly educated children live longer?

    Master-uppsats, Lunds universitet/Ekonomisk-historiska institutionen

    Författare :Pauline Bode; [2023]
    Nyckelord :Mortality inequalities; socioeconomic gradient in health; children’s education; socioeconomic status; SES; demography; Business and Economics;

    Sammanfattning : While there exists a large literature on mortality inequalities by an individual’s level of education and other socioeconomic characteristics this thesis looks at the relationship between the children’s level of education and parents’ mortality, which has been relatively less studied. I use longitudinal data from the Survey of Health, Ageing and Retirement in Europe (SHARE) for the years 2004-2017 and conduct Cox proportional hazard regressions to assess how children’s level of education affects parents’ mortality risks. LÄS MER

  4. 3. Wind Turbine Recovery Forecasting using Survival Analysis

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Anton Palets; [2023]
    Nyckelord :Survival analysis; Recovery Forecast; Wind Turbine; Availability Forecast; AFT model; Aalen s model; Cox regression; Cox Proportional Hazards; Variation Processes; Mathematics and Statistics;

    Sammanfattning : The goal of this thesis is to present a methodology for predicting time until recovery of failed wind turbines. The necessity is motivated by the potential for more accurate wind energy export forecasts. The current approach rests entirely on having an expert examine the turbine and produce a time estimate. LÄS MER

  5. 4. Development of a Machine Learning Survival Analysis Pipeline with Explainable AI for Analyzing the Complexity of ED Crowding : Using Real World Data collected from a Swedish Emergency Department

    Master-uppsats, KTH/Medicinteknik och hälsosystem

    Författare :Tobias Haraldsson; [2023]
    Nyckelord :SHAP; Explainable AI; Survival Analysis; LOS; Machine Learning; ED Crowding; SHAP; Förklarbar AI; Överlevnadsanalys; LOS; Maskininlärning; Överbelastning på Akuten;

    Sammanfattning : One of the biggest challenges in healthcare is Emergency Department (ED)crowding which creates high constraints on the whole healthcare system aswell as the resources within and can be the cause of many adverse events.Is is a well known problem were a lot of research has been done and a lotof solutions has been proposed, yet the problem still stands unsolved. LÄS MER

  7. 5. Statistical Modelling of Price Difference Durations Between Limit Order Books: Applications in Smart Order Routing

    Master-uppsats, KTH/Matematisk statistik

    Författare :Hannes Backe; David Rydberg; [2023]
    Nyckelord :Smart Order Routing; Market Microstructure; Statistical Modelling; Survival Analysis; Kaplan-Meier; Cox Proportional Hazards; Random Survival Forest; Smart Order Routing; Marknadsmikrostruktur; Statistisk Modellering; Överlevnadsanalys; Kaplan-Meier; Cox Proportional Hazards; Random Survival Forest;

    Sammanfattning : The modern electronic financial market is composed of a large amount of actors. With the surge in algorithmic trading some of these actors collectively behave in increasingly complex ways. Historically, academic research related to financial markets has been focused on areas such as asset pricing, portfolio management and financial econometrics. LÄS MER