Essays about: "Douglas Persson"

Found 4 essays containing the words Douglas Persson.

  1. 1. Compression Selection for Columnar Data using Machine-Learning and Feature Engineering

    University essay from Malmö universitet/Institutionen för datavetenskap och medieteknik (DVMT)

    Author : Douglas Persson; Ludvig Juelsson Larsen; [2023]
    Keywords : Machine Learning; XGBoost; Classification; Feature Engineering; Compression Algorithms; Data Encodings; Database Management System DBMS ; Column- Oriented DBMS;

    Abstract : There is a continuously growing demand for improved solutions that provide both efficient storage and efficient retrieval of big data for analytical purposes. This thesis researches the use of machine-learning together with feature engineering to recommend the most cost-effective compression algorithm and encoding combination for columns in a columnar database management system (DBMS). READ MORE

  3. 2. Data-driven test case design of automatic test cases using Markov chains and a Markov chain Monte Carlo method

    University essay from Malmö universitet/Fakulteten för teknik och samhälle (TS)

    Author : John Lindahl; Douglas Persson; [2021]
    Keywords : testing; test automation; Data-driven test case design; Markov chain; MC; Markov chain Monte Carlo; MCMC; Model-based testing; MBT; Metropolis-Hastings; statistics;

    Abstract : Large and complex software that is frequently changed leads to testing challenges. It is well established that the later a fault is detected in software development, the more it costs to fix. READ MORE

  4. 3. Value Before Volume: Management Control Systems and Institutional Complexity in Impact Private Equity

    University essay from Handelshögskolan i Stockholm/Institutionen för redovisning och finansiering

    Author : Douglas Persson; Erik Hallgren; [2021]
    Keywords : Management Control Systems; Private Equity; Impact Private Equity; Institutional Logics; Institutional Complexity;

    Abstract : This paper elaborates on the research of management control systems (MCS) in the private equity (PE) field. Through a single case study of an impact PE firm, this study addresses the limited research on how PE enacts active ownership and strategy implementation through MCS, particularly in regard to mechanisms outside of formal governance and financial contracting. READ MORE

  5. 4. Etablering och tillväxt av Douglasgran i ett proveniensförsök i södra Sverige

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Magnus Persson; [2015]
    Keywords : Pseudotsuga menziesii; proveniens; frost; överlevnad; inland; kust;

    Abstract : I denna studie utvärderades ett proveniensförsök med douglasgran som anlades 2010 på Tönnersjöhedens försökspark, SLU i samarbete med Södra Skog. Syftet var att utreda skadebilden, tillväxten och avgång efter tre tillväxtsäsonger för 7 olika provenienser av Douglasgran, och genom statistiska analyser peka på skillnader i mellan kust-och inlandsprovenienser. READ MORE