Essays about: "value function"

Showing result 1 - 5 of 732 essays containing the words value function.

  1. 1. An Empirical Survey of Bandits in an Industrial Recommender System Setting

    University essay from Göteborgs universitet/Institutionen för data- och informationsteknik

    Author : Tobias Schwarz; Johan Brandby; [2023-09-21]
    Keywords : computer science; industrial application; machine learning; reinforcement learning; multi-armed bandits; MAB; contextual multi-armed bandits; survey; batch learning;

    Abstract : In this thesis, the effects of incorporating unstructured data—images in the wild—in contextual multi-armed bandits are investigated, when used within a recommender system setting, which focuses on picture-based content suggestion. The idea is to employ image features, extracted by a pre-trained convolutional neural network, and study the resulting bandit behaviors when including respective excluding this information in the typical context creation, which normally relies on structured data sources—such as metadata. READ MORE

  3. 2. Value at Risk Estimation using GARCH Family Models: A Comparison of Different Specifications and Distributions.

    University essay from Göteborgs universitet/Institutionen för nationalekonomi med statistik

    Author : Khaled Jrideh; [2023-05-26]
    Keywords : ;

    Abstract : The objective of this study is to compare the performance of different GARCH models, under various conditional distribution assumptions, to predict one-day-ahead Value-at-Risk (VaR) for three stocks: Swedbank, Handelsbanken, and SEB over the Covid-19 period. The performance is evaluated using Kupiec, Christoffersen tests and the Quadratic Loss. READ MORE

  4. 3. Image-driven simulation of brain tumors using a reaction-diffusion mathematical model

    University essay from Linköpings universitet/Avdelningen för medicinsk teknik

    Author : Kristos Qiqi; [2023]
    Keywords : brain tumor; cancer; mathematical model; simulation; magnetic resonance images; hjärntumör; cancer; matematisk model; simulering; magnetresonanstomografi bilder;

    Abstract : Brain tumors pose a big challenge in the field of neuro-oncology. Gliomas are the largest subgroup. Magnetic resonance imaging is a non-invasive tool for detecting and characterizing these tumors. Mathematical models, such as the reaction-diffusion equation, can be used for understanding the intricate behavior of gliomas. READ MORE

  5. 4. Bivänliga växter i urban miljö : en granskning av växtutbudet från landskapsarkitektprogrammet

    University essay from SLU/Dept. of Urban and Rural Development

    Author : Emma Asker Kling; Katarina Enskog Gripenvik; [2023]
    Keywords : Bin; humlor; vildbin; pollinatörer; pollinering; urban miljö; växtkännedom; ekosystemtjänst;

    Abstract : Pollinatörerna är hotade globalt och i det svenska landskapet, och behöver hjälp för att överleva (Naturvårdsverket u.å.b). Den främsta orsaken till den negativa utvecklingen är förlusten och fragmenteringen av pollinatörernas livsmiljöer (Naturvårdsverket u. READ MORE

  6. 5. HR Analytics for Competitive Advantage: Bringing organisational value while empowering the HR profession

    University essay from Lunds universitet/Företagsekonomiska institutionen

    Author : Elin Engsfelt; Louise Rosén Fång; [2023]
    Keywords : HR Analytics; Artificial Intelligence AI ; Human Resources HR ; Legitimacy; HR Profession; HR Processes; Organisational Processes; Diffusion of Innovation Theory DOI ; Four Stages of Analytics; Isomorphism; Functions; Challenges; Business and Economics;

    Abstract : Title: HR Analytics for Competitive Advantage: Bringing organisational value while empowering the HR profession Authors: Elin Engsfelt & Louise Rosén Fång Supervisor: Rikard Larsson Problem definition: The HR profession has throughout history, and still has, a legitimacy problem, where the HR department typically becomes administrative support, rather than a strategic business partner. Purpose: Explore HR professionals' perceptions and opinions on the use of HR Analytics in their work and identify the functions and challenges that HR Analytics brings to the organisation, the HR department, and the HR profession. READ MORE