Essays about: "sampling scheme"

Showing result 1 - 5 of 40 essays containing the words sampling scheme.

  1. 1. Towards a setup for narrowband terahertz generation through difference-frequency mixing of chirped ultrashort pulses

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Isa Clementsson; [2023]
    Keywords : Physics and Astronomy;

    Abstract : Terahertz radiation is a useful tool for inducing lower-energy excitations in matter, where it can be used to cause structural changes through direct interaction with the crystal lattice. Sub-picosecond optical pulses can be used to generate intense broadband terahertz pulses through optical rectification in nonlinear crystals, reaching peak electric fields of several MV/m and conversion efficiencies as high as a few percent. READ MORE

  3. 2. Enhancing Neural Network Accuracy on Long-Tailed Datasets through Curriculum Learning and Data Sorting

    University essay from KTH/Matematik (Avd.)

    Author : Daniel Barreira; [2023]
    Keywords : Machine Learning; Neural Network; CORAL-framework; Long-Tailed Data; Imbalance Metrics; Teacher-Student models; Curriculum Learning; Training Scheme; Maskininlärning; Neuralt Nätverk; CORAL-ramverk; Long-Tailed Data; Imbalance Metrics; Teacher-Student modeler; Curriculum Learning; Tränings- scheman;

    Abstract : In this paper, a study is conducted to investigate the use of Curriculum Learning as an approach to address accuracy issues in a neural network caused by training on a Long-Tailed dataset. The thesis problem is presented by a Swedish e-commerce company. READ MORE

  4. 3. Impact of Performance Measurement System on Employees’ Motivation and Work Effort in Organizations Offering Non-Incentivized Compensation Scheme: The Case of Banking Sector

    University essay from Lunds universitet/Företagsekonomiska institutionen

    Author : Alivija Kovalova; Alina Romanyceva; [2023]
    Keywords : PMS; Enabling and Coercive Control; Autonomous and Controlled Motivation; Work effort; Banking sector; Social Sciences;

    Abstract : The study has two purposes: in the setup of heavily regulated industry (banking) and non-incentivized compensation scheme, (1) to investigate separately bankers’ enabling and coercive perceptions of PMS and how they contribute to motivation and work effort; and (2) to explore to what extent the combination of enabling and coercive perceptions of PMS influences motivation and work effort. The study was based on the online questionnaire, which was distributed using convenience and snowball sampling techniques (N=105). READ MORE

  5. 4. Evaluating and comparing different key phrase-based web scraping methods for training domain-specific fasttext models

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

    Author : Love Book; [2023]
    Keywords : Machine Learning; Natural Language Processing; Word2vec; fasttext; KeyBERT; Web scraping; Transformers; Embeddings.; Maskininlärning; språkteknologi; Word2vec; fasttext; KeyBERT; Webbskrapning; Transformatorer; Inbäddningar.;

    Abstract : The demand for automation of simple tasks is constantly increasing. While some tasks are easy to automate because the logic is fixed and the process is streamlined, other tasks are harder because the performance of the task is heavily reliant on the judgment of a human expert. READ MORE

  6. 5. Application of Discrete Time High Order Control Barrier Functions for a prototype multi-spacecraft inspection of the ISS

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

    Author : Gregorio Marchesini; [2023]
    Keywords : Space Robotics; Control Barrier Functions; Autonomous systems; Multi-agent systems;

    Abstract : In the past few years, the application of Control Barrier Functions (CBF) and High Order Control Barrier Functions (HOCBF) as a suitable framework to ensure safety for autonomous systems has attracted increasing interest. In particular, autonomous space systems are frequently subject to safety-critical constraints due to the high costs involved in manufacturing and launching. READ MORE