Essays about: "Truncated"

Showing result 1 - 5 of 55 essays containing the word Truncated.

  1. 1. Bootstrapping methods for assessing causality in survival analysis: A case study on major adverse cardiovascular events

    University essay from Lunds universitet/Matematisk statistik

    Author : Paulina Benthem Ciano; [2023]
    Keywords : Causality; Graphical models; Bootstrap; Survival analysis; Additive hazards model.; Mathematics and Statistics;

    Abstract : The combination of graphical models with Aalen's additive hazards model, resulting in a model known as dynamical path analysis, permits assessing the effects of different variables on times until an event and decomposing these total effects into direct and indirect effects. This thesis proposes novel bootstrapping methods designed for left-truncated right-censored data, conditional on covariates within the framework of Aalen's additive hazards model, in order to obtain confidence intervals for the estimates. READ MORE

  3. 2. Decoding communication of non-human species - Unsupervised machine learning to infer syntactical and temporal patterns in fruit-bats vocalizations.

    University essay from Stockholms universitet/Institutionen för data- och systemvetenskap

    Author : Luigi Assom; [2023]
    Keywords : animal decision making; unsupervised machine learning; UMAP; autoencoders; classifiers; bioacoustics; combinatory syntax; animal communication;

    Abstract : Decoding non-human species communication offers a unique chance to explore alternative intelligence forms using machine learning. This master thesis focuses on discreteness and grammar, two of five linguistic areas machine learning can support, and tackles inferring syntax and temporal structures from bioacoustics data annotated with animal behavior. READ MORE

  4. 3. How teachers utilize the practice of reading aloud to promote English language development in Swedish K-3 grades.

    University essay from Malmö universitet/Fakulteten för lärande och samhälle (LS)

    Author : Joshua Payne; Ramize Dushku; [2023]
    Keywords : reading aloud; language development; young learners; L1; L2; EFL; communicative learning; vocabulary acquisition;

    Abstract : Reading aloud is a method that has been used as a means of observational learning in schools for many years. It exists as an implicit part of many educational systems across the world, and the theories that underpin its usage are well studied. READ MORE

  5. 4. Lipoteichoic acid extraction from plasma : Chromatography techniques utilizing truncated derivates of antimicrobial peptides

    University essay from Malmö universitet/Institutionen för biomedicinsk vetenskap (BMV)

    Author : Gustav Sedelius; [2022]
    Keywords : antimicrobial peptides; chromatography; hemoperfusions; lipoteichoic acid; plasma; Sepsis;

    Abstract : With increasing incidence rates aligned with poor prognosis; sepsis represents one of the biggest challenges in modern health care. It is a multifactorial syndrome defined as organ dysfunction caused by disturbed systemic response to an infection. READ MORE

  6. 5. Inverse probability weighted generalised estimating equations for longitudinal data

    University essay from Lunds universitet/Matematisk statistik

    Author : Andrea Mattsson; [2021]
    Keywords : weighted generalised estimating equations; inverse probability weighting; longitudinal study; missing data; truncation by death; lung function; FEV1; Mathematics and Statistics;

    Abstract : Longitudinal study designs, in which variables of interest are observed at multiple time points in a study population, are frequently used in clinical research. Missing data are common in these types of studies. Moreover, in studies investigating a population where the mortality rate is high, data can be truncated by death. READ MORE