Essays about: "time-variation"

Showing result 1 - 5 of 22 essays containing the word time-variation.

  1. 1. Predicting user churn using temporal information : Early detection of churning users with machine learning using log-level data from a MedTech application

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Love Marcus; [2023]
    Keywords : User churn; Customer attrition; Artificial neural networks; Log-level analysis; Random forests; Decision trees; Användarbortfall; Kundbortfall; Artificiella neurala nätverk; logganalys; Slumpskogar; Beslutsträd;

    Abstract : User retention is a critical aspect of any business or service. Churn is the continuous loss of active users. A low churn rate enables companies to focus more resources on providing better services in contrast to recruiting new users. READ MORE

  3. 2. Capturing time variation within systemic risk estimation

    University essay from Lunds universitet/Nationalekonomiska institutionen

    Author : Christian Hovstadius; Baltsar Lindgren; [2023]
    Keywords : Systemic risk; CoVaR; State variables; Lasso; PCA; Business and Economics;

    Abstract : Systemic risk can be defined as the risk to the whole financial system. Financial institutions may contribute more or less to this risk, and measuring the systemic risk contributions of institutions is of central importance for regulators. READ MORE

  4. 3. The influence of spatial variations in rain intensity for cloudburst modelling : a case study of the Gävle cloudburst

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Fanny Jeppsson Stahl; [2022]
    Keywords : Flood modelling; pluvial flooding; spatial variations in rain intensity; design storms; MIKE 21 Flow Model FM; 2D hydraulic modelling; Skyfallsmodellering; pluviala översvämningar; spatiala variationer i regnintensitet; typregn; MIKE 21 Flow Model FM;

    Abstract : With an intensification of heavy rain events in a changing climate and a rapid urbanization the risk for pluvial flooding is increasing in our societies. Pluvial flooding, which is formed when the rainfall rate exceeds the infiltration or drainage rate, can occur rapidly and cause great damages, large economic losses and possibly risk human lives. READ MORE

  5. 4. Commodities and stock markets in Sub-Saharan Africa

    University essay from Handelshögskolan i Stockholm/Institutionen för finansiell ekonomi

    Author : Ylva Forsberg; [2020]
    Keywords : Commodities; Forecasting; Development; Africa; Stock markets;

    Abstract : This thesis studies stock returns and commodity returns in a set of commodity-dependent Sub-Saharan African countries, differentiating between returns of main-export commodities and a general commodity index and allowing for time-variation. This is done by using forecasting regressions of stock returns over lagged commodity returns and two macroeconomic variables. READ MORE

  6. 5. Automatic Prediction of Human Age based on Heart Rate Variability Analysis using Feature-Based Methods

    University essay from Linköpings universitet/Statistik och maskininlärning

    Author : Yusur Al-Mter; [2020]
    Keywords : Supervised learning; Classification; Ensemble; Support Vector Machines; Heart Rate Variability; Extreme Gradient Boosting; Random Forest;

    Abstract : Heart rate variability (HRV) is the time variation between adjacent heartbeats. This variation is regulated by the autonomic nervous system (ANS) and its two branches, the sympathetic and parasympathetic nervous system. READ MORE