Sökning: "regularisation"

Visar resultat 1 - 5 av 14 avhandlingar innehållade ordet regularisation.

1. 1. On the Robustness of Statistical Models: Entropy-based Regularisation and Sensitivity of Boolean Deep Neural Networks

   Författare :Olof Zetterqvist; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Deep neural networks; Noise stability; Noisy labels; Noise sensitivity; Boolean functions; Regularisation;

   Sammanfattning : Models like deep neural networks are known to be sensitive towards many different aspects of noise. Unfortunately, due to the black-box nature of these models, it is in general not known why this is the case. Here, we analyse and attack these problems from three different perspectives. LÄS MER

3. 2. Regularised Weights in Statistical Models

   Författare :Olof Zetterqvist; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lasso; Robust Statistics; Deep Learning; Weighted loss.; Noisy Labels; Neural Networks; Regularisation;

   Sammanfattning : For flexible and overparameterised models like neural networks, overfitting can be a notorious problem that makes it hard to give accurate predictions in real-life usage. Overfitting is in particular likely in the presence of errors in the training data, such as misclassifications or outliers. LÄS MER

4. 3. Challenging Rightlessness : On Irregular Migrants and the Contestation of Welfare State Demarcation in Sweden

   Författare :Amanda Nielsen; Helena Olofsdotter Stensöta; Per Strömblad; Ulf Mörkenstam; Mikael Spång; Linnéuniversitetet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; irregular migrants; undocumented migrants; amnesty; regularisation; social rights; welfare state; citizenship; human rights; discourse theory; Sweden; Statsvetenskap; Political Science;

   Sammanfattning : This thesis explores the political struggles that followed after the appearance of irregular migrants in Sweden. The analysis starts from the assumption that the group’s precarious circumstances of living disrupted the understanding of Sweden as an inclusive society and shed light on the limits of the welfare state’s inclusionary ambitions. LÄS MER

5. 4. Constitutive equations for concrete materials subjected to high rate of loading

   Författare :Mattias Unosson; Larsgunnar Nilsson; Lars Olovsson; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Continuum mechanics; Numerical analysis; Drop weight testing; Electrical engineering; Elektroteknik;

   Sammanfattning : Continuum mechanics is used to model the mechanical behaviour of concrete structures subjected to high rates of loading in defence applications. Large deformation theory is used and an isotropic elastic-plastic constitutive equation with isotropic hardening, damage and strain rate dependent loading surface. LÄS MER

7. 5. Positive vector bundles in complex and convex geometry

   Författare :Hossein Raufi; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Nakano positivity; vanishing theorems; Prekopa theorem; Griffiths positivity; convex geometry; Ohsawa-Takegoshi extension theorem; dbar-equation; L^2-estimates; singular hermitian metrics; holomorphic vector bundles; holomorphic vector bundles; dbar-equation; L^2-estimates; singular hermitian metrics; Griffiths positivity; Nakano positivity; vanishing theorems; Ohsawa-Takegoshi extension theorem; convex geometry; Prekopa theorem;

   Sammanfattning : This thesis concerns various aspects of the geometry of holomorphic vector bundles and their analytical theory which all, vaguely speaking, are related to the notion of positive curvature in general, and L^2-methods for the dbar-equation in particular. The thesis contains four papers. LÄS MER