Sökning: "Unsupervised learning"

Visar resultat 1 - 5 av 303 uppsatser innehållade orden Unsupervised learning.

  1. 1. Narratives in Central Banking - A Case Study on Federal Reserve Communication

    C-uppsats, Handelshögskolan i Stockholm/Institutionen för nationalekonomi

    Författare :Love Leijonklo; Felix Wilke; [2023]
    Nyckelord :federal reserve; central bank; communication; sentiment; latent dirichlet allocation;

    Sammanfattning : This paper investigates how Federal Reserve communication affects financial markets. This is done by constructing a sentiment index based on meeting minutes released by the Federal Open Market Committee. LÄS MER

  2. 2. Characterization of familial Alzheimer’s disease using unsupervised learningalgorithmsA data analysis of Alzheimer’s disease cases

    Master-uppsats, Uppsala universitet/Institutionen för informationsteknologi

    Författare :Tim Littau; [2022]
    Nyckelord :;

    Sammanfattning : Familial Alzheimer's Disease (FAD) is characterized by an early onset, cognitive impairment and dementia. Besides the symptomatic characterization, FAD shows an abundance of amyloid beta and tau protein in the patients' brains. LÄS MER

  3. 3. Insurance Fraud Detection using Unsupervised Sequential Anomaly Detection

    Master-uppsats, Linköpings universitet/Institutionen för datavetenskap

    Författare :Anton Hansson; Hugo Cedervall; [2022]
    Nyckelord :Insurance Fraud Detection; Anomaly Detection; Long Short-Term Memory Networks LSTM ; Unsupervised Learning; Autoencoder AE ; Variational Autoencoder VAE ; Interpretable Machine Learning; Feature Engineering; Feature Selection; Feature Importance;

    Sammanfattning : Fraud is a common crime within the insurance industry, and insurance companies want to quickly identify fraudulent claimants as they often result in higher premiums for honest customers. Due to the digital transformation where the sheer volume and complexity of available data has grown, manual fraud detection is no longer suitable. LÄS MER

  4. 4. Unsupervised Topic Modeling to Improve Stormwater Investigations

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :David Arvidsson; [2022]
    Nyckelord :NLP; topic modeling; LDA; unsupervised machine learning; urban process; graph database; knowledge graph;

    Sammanfattning : Stormwater investigations are an important part of the detail plan that is necessary for companies and industries to write. The detail plan is used to show that an area is well suited for among other things, construction. Writing these detail plans is a costly and time consuming process and it is not uncommon they get rejected. LÄS MER

  5. 5. Root-cause analysis with data-driven methods and machine learning in lithium-ion battery tests : Master's thesis about detecting deviations with PCA

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för systemteknik

    Författare :Frans Rademacher; [2022]
    Nyckelord :Machine learning; Li-ion; batteries; PCA; deviations; anomaly detection; root-cause analysis; differential capacity; feature engineering;

    Sammanfattning : The increased demand of energy storage systems and electric vehicles on the market result in high demand of lithium-ion batteries. As a lithium-ion battery manufacturer, Northvolt runs quality tests on the products to assess their performance, life and safety. LÄS MER