Sökning: "the Dimensional model"

Visar resultat 1 - 5 av 1098 uppsatser innehållade orden the Dimensional model.

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. Utmaningar i geometriundervisning: en djupdykning i innehåll, elevers missuppfattningar och lärarinterventioner

   Uppsats för yrkesexamina på grundnivå, Malmö universitet/Fakulteten för lärande och samhälle (LS)

   Författare :Linnea Listring; Ida Green; [2024]
   Nyckelord :geometric objects; two- and three dimensional objects; relational understanding; instrumental understanding; teaching methods; Van Hiele instructional model; practical elements; daily life;

   Sammanfattning : This text discusses final results from empirical studies, scientific articles and literature from the period 1990-2023, concerning teachers’ knowledge, students’ misconceptions and various teaching methods related to geometric objects. The results highlight challenges for both teachers and students in understanding and defining geometric shapes and figures. LÄS MER

4. 3. Exploring the effects of pressure on the magnetic properties of quasi-low dimensional quantum magnets via thermodynamic measurements

   Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Författare :Emelie Zhu; [2024]
   Nyckelord :Physics and Astronomy; Technology and Engineering;

   Sammanfattning : Four model solid state compounds were used to experimentally investigate the effects of pressure on the interactions in one- and two-dimensional Heisenberg magnetic models. BaCuSi2O6, BaCu2V2O8, SrCuO2 and CuGeO3 were successfully synthesized via solid-state reactions and characterized via x-ray diffraction. LÄS MER

5. 4. "Sanningen" Bakom Koranbränningarna : En kritisk diskursanalys av kontroversen kring Koranbränningarna och samhällspolariseringen i Sverige

   Kandidat-uppsats, Jönköping University/HHJ, Avdelningen för socialt arbete

   Författare :Yaser Issa Abdalrahim; Edon Kitmiri; [2024]
   Nyckelord :Critical discourse analysis; Quranburnings; Riots; Demonstration; The Easter riots; Kritisk diskursanalys; Koranbränningar; Upplopp; Demonstration; Påskkravallerna; Aftonbladet; Expressen; SVT Nyheter; Fria Tider.;

   Sammanfattning : This study analyzed how mass media portrays specific groups of actors involved in burnings of the quran, more precisely, burners of the quran and demonstrators opposed to it. The study has compiled 18 digitally published news articles derived from four different news agencies. LÄS MER

7. 5. Variational AutoEncoders and Differential Privacy : balancing data synthesis and privacy constraints

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Baptiste Bremond; [2024]
   Nyckelord :TVAE; Differential privacy; Tabular data; Synthetic data; DP-SGD; TVAE; differentiell integritet; tabelldata; syntetiska data; DP-SGD;

   Sammanfattning : This thesis investigates the effectiveness of Tabular Variational Auto Encoders (TVAEs) in generating high-quality synthetic tabular data and assesses their compliance with differential privacy principles. The study shows that while TVAEs are better than VAEs at generating synthetic data that faithfully reproduces the distribution of real data as measured by the Synthetic Data Vault (SDV) metrics, the latter does not guarantee that the synthetic data is up to the task in practical industrial applications. LÄS MER