Sökning: "Datamängder analys"

Visar resultat 6 - 10 av 66 uppsatser innehållade orden Datamängder analys.

1. 6. Grafdatabaser en komparativ analys

   M1-uppsats, KTH/Hälsoinformatik och logistik

   Författare :Kasper Lindström; Jonathan Lindqvist; [2023]
   Nyckelord :Graph database; Inference; Triplets; SPARQL; RDF4J; RDF; OWL; Grafdatabas; Inferens; Tripletter; SPARQL; RDF4J; RDF; OWL;

   Sammanfattning : I dagens samhälle är energieffektivisering en viktig parameter när man pratar om hållbar-het. Många fastigheter saknar tekniska lösningar för att effektivt övervaka och hantera en-ergiförbrukning. För att möta detta behov strävar företag som iquest efter att digitalisera och automatisera energiövervakning. LÄS MER

3. 7. Finding the QRS Complex in a Sampled ECG Signal Using AI Methods

   Master-uppsats, KTH/Fysik

   Författare :Jeanette Marie Victoria Skeppland Hole; [2023]
   Nyckelord :ECG; ECG-analysis; QRS detector; Artificial Intelligence; Machine Learning; Deep neural networks; Long short-term memory; Convolutional neural network; Multilayer perceptron; EKG; EKG-analys; QRS detektor; Artificiell intelligens; Maskininlärning; Djupa neurala nätverk; Long short-term memory; Convolutional neural network; Multilayer perceptron;

   Sammanfattning : This study aimed to explore the application of artificial intelligence (AI) and machine learning (ML) techniques in implementing a QRS detector forambulatory electrocardiography (ECG) monitoring devices. Three ML models, namely long short-term memory (LSTM), convolutional neural network (CNN), and multilayer perceptron (MLP), were compared and evaluated using the MIT-BIH arrhythmia database (MITDB) and the MIT-BIH noise stress test database (NSTDB). LÄS MER

4. 8. Modelling Non-Maturing Deposits: Examining the Impact of Repo Rates and Volume Dynamics on Valuation Using Regression, Time Series Analysis, and Vasicek Methods

   Master-uppsats, KTH/Matematik (Avd.)

   Författare :Alexandra Benckert; My Loft; [2023]
   Nyckelord :Non-maturing deposits; ARIMAX model; Regression analysis; Deposit volume modelling; Vasicek model for short rate; Interest rate sensitivity; Valuation of non-maturing deposits.; Icke tidsbunden inlåning; ARIMAX-modellen; Regressionsanalys; Modellering av inlåningsvolym; Vasicek-modellen för kort ränta; Räntekänslighet; Värdering av icke tidsbunden inlåning.;

   Sammanfattning : This thesis focuses on modelling non-maturing deposits (NMD) and has been written in collaboration with Svenska Handelsbanken. The methodology includes regression analysis and time series analysis, with the Repo rate serving as an exogenous variable in both models. LÄS MER

5. 9. Automatic Analysis of Peer Feedback using Machine Learning and Explainable Artificial Intelligence

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Kevin Huang; [2023]
   Nyckelord :Text classification; Peer feedback; Explainable Artificial Intelligence; BERT; RoBERTa; DistilBERT; Decision Tree; MLP; CSCL; STEM education; Textklassificering; Feedback till kamrater; Förklarig Artificiell Intelligens; BERT; RoBERTa; DistilBERT; Decision Tree; MLP; CSCL; STEM-utbildning;

   Sammanfattning : Peer assessment is a process where learners evaluate and provide feedback on one another’s performance, which is critical to the student learning process. Earlier research has shown that it can improve student learning outcomes in various settings, including the setting of engineering education, in which collaborative teaching and learning activities are common. LÄS MER

7. 10. Predicting Short-term Absences of a Railway Crew using Historical Data

   Master-uppsats, KTH/Matematisk statistik

   Författare :Agnes Björnfot; Sandra Fjelkestam; [2023]
   Nyckelord :statistics; machine learning; absence prediction; random forest; XGBoost; quantile regression; statistik; maskininlärning; frånvaroprognoser; random forest; XGBoost; kvantilregression;

   Sammanfattning : Transportation via train is considered the most environmentally friendly way of traveling and is widely seen as the future of transportation. Canceled and delayed trains worsen customer satisfaction; thus, punctual trains are crucial for railway companies. LÄS MER