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Zobrazují se záznamy 621-640 z 11244
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Algonauts challenge 2023: predicting human fMRI activity in response to visual stimulation
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 13. 2. 2024In this thesis, we investigate the application of pretrained Deep Neural Networks, par- ticularly Vision Transformers (ViT), for predicting human fMRI activity in response to visual stimulation. The Algonauts Challenge ... -
Point Cloud Rendering Approaches for Camera Pose Verification
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 13. 2. 2024Visual localization is the problem of estimating the 6 degrees of freedom camera pose from which a query image was taken relative to a known reference scene representation. It is the key for applications such as Augmented, ... -
Evolution strategies for policy optimization in transformers
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 13. 2. 2024We explore the capability of evolution strategies to train a transformer architecture in the reinforcement learning setting. We perform experiments using OpenAI's highly parallelizable evolution strategy and its derivatives ... -
Fuzz testing of network subsystem in PikeOS
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 5. 2. 2024Stability under every possible circumstance is a goal for a lot of applications. This problem applies to the network stack ANIS of the real-time operating system PikeOS developed by SYSGO. PikeOS requires security and ... -
Thermophoretic and Hydrodynamic Interactions in Artificial Active Matter
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 8. 2. 2024The study of artificial active matter has significantly intensified in recent years due to its potential practical applications and promises to understand living organisms' in- teractions and collective behaviour. The ... -
Geometrická zobrazení ve středoškolské matematice
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 8. 2. 2024The current availability of computers and mobile devices in school facilities and the affordability of mobile devices for everyone provide for an increasing use of interactive geometry in the curriculum. The aim of this ... -
Rozpoznávání retinopatie ve snímcích sítnice pomocí strojového učení
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 13. 2. 2024In collaboration with the Institute for Clinical and Experimental Medicine (IKEM) and leveraging their historical examination data, we developed a convolutional neural net- work trained to identify diabetic retinopathy ... -
Rozšíření kolizního modelu hlavního pásu asteroidů
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 14. 2. 2024The Main Belt, the region between the orbits of Mars and Jupiter, is the home to more than 1 million asteroids. These asteroids form orbital groups, i.e., asteroid families formed by collisions; and also spectral groups ... -
Větné reprezentace s interpretací podobnosti
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 13. 2. 2024Sentence representations - embeddings - obtained from neural network models are the core part of many applications in both academia and industry. Although embeddings reach great results in correlation with human sense of ... -
Extension of smoothed particle hydrodynamics based on Poisson brackets
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 9. 1. 2024The thesis aims to find a generalization of smoothed particle hydrodynamics to fluid models which are compatible with Hamiltonian formulation of physics. We develop an approach based on a particle discretization of Poisson ... -
Low-resource methods for dialogue systems applications
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 9. 2. 2024This thesis focuses on developing and improving task-oriented dialogue systems design in the rapidly growing landscape of artificial intelligence and natural language processing. We propose techniques that can substantially ... -
Nanostructures for solar cells: controlling the surface electronic properties by monolayers of carborane molecules
Výsledek obhajoby: UZNÁNO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 12. 12. 2023Doped layers of crystalline silicon are currently the main driver of con- ventional photovoltaic devices. Direct introduction of group III and V atoms into the silicon matrix is still the mainstream of mass production of ... -
Two-phase scheduling with unknown speeds
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 16. 2. 2024Speed-robust scheduling is a two-stage scheduling problem with a makespan objective. We are given processing times of n jobs, number of machines m and number of bags b. We have to group the jobs into bags that are to be ... -
Optical methods for characterization of semiconductor radiation detectors
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 24. 1. 2024CdZnTe and perovskites are promising materials for radiation detectors. Here, we address the main obstacles to their application, CdZnTe charging, and perovskite stability by photocurrent measurements. In the first part, ... -
Algebraic Tools in Combinatorial Geometry and Topology
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 28. 2. 2024In this thesis we study combinatorial problems through the lenses of the exterior alge- bra. This algebra is a natural object to model set systems as well as simplicial complexes. Moreover, it is possible to translate the ... -
Properties of function spaces and operators acting on them
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 4. 1. 2024The present thesis is focused on the study of properties of function spaces con- taining measurable functions, and operators acting on them. It consists of four papers. In the first paper, we establish a new characterization ... -
Distance magic labelings
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 16. 2. 2024Title: Distance Magic Labelings Author: Hayden Pfeiffer Department: Dept. of Theoretical Computer Science and Mathematical Logic Supervisor: doc. Mgr. Petr Gregor, Ph.D., KTIML, MFF UK Abstract: A distance magic labeling ... -
Výuka objemů a povrchů oblých těles na střední škole s podporou webové aplikace
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2023)Datum obhajoby: 8. 9. 2023This thesis is focused on the volume and surface area of solids, particularly on the volume and surface area of polyhedra and round solids, which are part of the high school curriculum of geometry (stereometry). The purpose ... -
Tennenbaum phenomena in models of arithmetic
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 5. 2. 2024The main aim of this text is to present and investigate some basic arithmetical func- tions and relations with regard to being recursive in a countable non-standard model of Peano arithmetic, PA for short, or some weaker ... -
Automatizace generování popisů produktů pomocí neuronových jazykových modelů
Výsledek obhajoby: OBHÁJENO(Univerzita Karlova, Matematicko-fyzikální fakulta, 2024)Datum obhajoby: 5. 2. 2024Product descriptions are an important part of product presentation in e-commerce. This bachelor thesis explores the possibilities of using language models based on the Transformer architecture to generate product descrip- ...
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