Sökning: "model selection"

Visar resultat 1 - 5 av 1621 uppsatser innehållade orden model selection.

1. 1. Feature Selection for Microarray Data via Stochastic Approximation

   Master-uppsats, Göteborgs universitet/Institutionen för data- och informationsteknik

   Författare :Erik Rosvall; [2024-03-18]
   Nyckelord :feature selection; feature ranking; microarray data; stochastic approximation; Barzilai and Borwein method; Machine Learning; AI;

   Sammanfattning : This thesis explores the challenge of feature selection (FS) in machine learning, which involves reducing the dimensionality of data. The selection of a relevant subset of features from a larger pool has demonstrated its effectiveness in enhancing the performance of various machine learning algorithms. LÄS MER

3. 2. ”HAR JAG EN BOK I ÖRONEN KAN JAG GÅ HUR LÅNGT SOM HELST”. En kvalitativ studie om användares relation till ljudböcker jämfört med tryckta böcker

   Kandidat-uppsats, Göteborgs universitet/Institutionen för journalistik, medier och kommunikation

   Författare :Henrietta Lundkvist; [2024-03-06]
   Nyckelord :Digital konvergens; streaming; algoritmer; ljudböcker; plattformar; uses gratifications; affordances;

   Sammanfattning : Har jag en bok i öronen kan jag gå hur långt som helst, or If I have a book in my ears, I can walk as far as I want, is a qualitative study that explores users' relationship with streamed audiobooks, compared to books in printed format. The choice of topic is driven by the fact that digitalization has transformed literature as a medium and the book industry as an enterprise. LÄS MER

4. 3. UNGA VUXNAS UPPFATTNINGAR OM FALSKA NYHETER OCH DERAS TILLIT TILL NYHETSKANALER. En kvalitativ intervjustudie

   Kandidat-uppsats, Göteborgs universitet/Institutionen för journalistik, medier och kommunikation

   Författare :Andrea Ångman; [2024-03-01]
   Nyckelord :Fake news;

   Sammanfattning : The purpose of this study is to look into what low-educated and highly-educated young adults aged 20-30 think affects the spread of fake news and how they feel that their trust in news sources is affected when they become increasingly exposed to it. By mapping the respondents' view of the phenomenon of fake news and its influence on their information intake, the study aims to understand whether their trust in news sources is affected. LÄS MER

5. 4. Är ledarsidorna partipressens sista andetag?

   Kandidat-uppsats, Göteborgs universitet/Institutionen för journalistik, medier och kommunikation; Göteborgs universitet/Institutionen för journalistik, medier och kommunikation

   Författare :Svante Alling; Ebba Lundgren; Anna Sandlin; [2024-02-28]
   Nyckelord :Ledarsidor; Lars Nord; partipress; Aftonbladet; Expressen.; Editorial pages;

   Sammanfattning : In the following study the subject of party press within the editorial pages will be researched. The aim of this thesis is to investigate whether papers with different political and ideological standings prioritize subjects differently yet also see how they value different political parties and politicians. LÄS MER

7. 5. Predicting True Sepsis and Culture-positive Sepsis in Intensive Care Unit with Machine Learning Techniques

   Master-uppsats, Lunds universitet/Matematisk statistik

   Författare :Zeyuan Wu; [2024]
   Nyckelord :Machine Learning; Diagnosis of Sepsis; XGBoost; Logistic Regression; Mathematics and Statistics;

   Sammanfattning : Sepsis, a serious medical condition often leading to patients requiring intensive care, has prompted numerous scientists to employ mathematical techniques to aid in its diagnosis. This thesis uses logistic regression and a machine learning technique, XGBoost, to predict true sepsis (as opposed to sepsis mimics) and culture-positive sepsis (among true sepsis) in critical care using blood test results, physiological measurements and other patient characteristics. LÄS MER