Sökning: "Erik Fahlman"

Hittade 2 uppsatser innehållade orden Erik Fahlman.

1. 1. Data Complexity and its effect on Classification Accuracy in Multi Class Classification Problems : A study using synthetic datasets

   Kandidat-uppsats, KTH/Datavetenskap

   Författare :Fredrik Östlund; Erik Fahlman; [2022]
   Nyckelord :;

   Sammanfattning : This study investigates how the performance of a selection of machine learning classifiers is affected by the data complexity, measured by F1, N1, N2, and N3 in a multi class classification setting. This study uses synthetic datasets that span across the range of possible complexity levels for each complexity measure, allowing us to target the desired level of complexity for each dataset. LÄS MER

3. 2. Media Coverage and Abnormal Trading Volume

   Master-uppsats, Uppsala universitet/Företagsekonomiska institutionen

   Författare :Erik Fahlman; Eric Pettersson; [2017]
   Nyckelord :media coverage; abnormal trading volume; divergence of opinion; information asymmetry; investor recognition;

   Sammanfattning : In this study, we examine the media coverage effect on abnormal trading volume using two frameworks: divergence of opinion and information asymmetry. Our sample consists of 420 Swedish small cap firms and includes 125 000 articles from over 800 Swedish media sources. LÄS MER