Sökning: "fine tuning"

Visar resultat 1 - 5 av 149 uppsatser innehållade orden fine tuning.

  1. 1. Förändring och kontinuitet av den amerikanska strategiska kulturen : En tolkande fallstudie av USA:s nationella syn på militär våldsanvändning

    Master-uppsats, Försvarshögskolan

    Författare :Emma Smedberg; [2022]
    Nyckelord :Strategic culture; context; norms; change; continuity; use of force; national strategy;

    Sammanfattning : Researchers seem to disagree to which extent the terrorist attacks of September 11, 2001 led to a change in the United States' view of the legitimate use of military force. Therefore, this interpretive case study aims to contribute to a deeper understanding of the American strategic culture at the national level and whether the war on terror indicates a fundamental change or a fine-tuning of their strategic culture. LÄS MER

  2. 2. Learning with Synthetically Blocked Images for Sensor Blockage Detection

    Master-uppsats, Linköpings universitet/Datorseende

    Författare :Hoang Tran; [2022]
    Nyckelord :Machine learning; deep learning; neural networks; synthetic data; sensor blockage; domain adaptation;

    Sammanfattning : With the increasing demand for labeled data in machine learning for visual perception tasks, the interest in using synthetically generated data has grown. Due to the existence of a domain gap between synthetic and real data, strategies in domain adaptation are necessary to achieve high performance with models trained on synthetic or mixed data. LÄS MER

  3. 3. Parameter Update Schemes for Hidden Markov Models applied to Financial Returns

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Sigfrid Forsberg; [2022]
    Nyckelord :Markov Chain; Finance; Hidden Markov Model; Generalized Autoregressive Score Model; S P-500; Nikkei; Adaptive Model; Volatility; Regime-switching Model; Line-Search Algorithm; Predictor-Corrector; Quasi-Newton; Mathematics and Statistics;

    Sammanfattning : This thesis was dedicated to investigating the use of different parameter update schemes for Hidden Markov models with time-varying parameters, with an emphasis on developing alternatives to the quasi-Newton step. The focus was on applications to financial returns, using data from the S\&P-500 and the Nikkei index, and for comparison, a trial using synthetic data was also performed. LÄS MER

  4. 4. Starbursts at Cosmic Dawn : Formation of Globular Clusters, Ultra-Faint Dwarfs, and Population III star clusters at z > 6

    Master-uppsats, Stockholms universitet/Institutionen för astronomi

    Författare :Olof Nebrin; [2022]
    Nyckelord :Cosmology; Galaxy Formation; Globular Clusters; First Stars; Dark Matter; Cosmic Dawn; Reionization; Ultra-Faint Dwarfs;

    Sammanfattning : In the standard model of cosmology (ΛCDM) the first stars, star clusters, and galaxies are expected to have formed in short bursts of star formation in low-mass dark matter halos at high redshifts (). Up to this point, attempts to predict the properties and abundances of these luminous objects have made use of numerically expensive cosmological simulations. LÄS MER

  5. 5. Classifying Electricity Tower Image Data with Unsupervised Curriculum Learning

    Magister-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Jacob Wedin; [2022]
    Nyckelord :;

    Sammanfattning : The core objective of this thesis is to classify a set of aerial photographs into two categories, those containing an electricity tower and those not containing an electricity tower. While supervised deep learning methods can reach excellent results on such tasks, they require large amounts of labeled data. LÄS MER