National Repository of Grey Literature 494 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
On the Utilization of Machine Learning in Asset Return Prediction on Limited Datasets
Petrásek, Lukáš ; Baruník, Jozef (advisor) ; Novák, Jiří (referee)
In this thesis, we conduct a comparative analysis of how various modern ma- chine learning techniques perform when employed to asset return prediction on a relatively small sample. We consider a broad selection of machine learn- ing methods, including e.g. elastic nets, random forests or recently highly popularized neural networks. We find that these methods fail to outperform a simple linear model containing only 5 factors and estimated via ordinary least squares. Our conclusion is that applications of machine learning in fi- nance should be conducted carefully, because the techniques may not actually be as powerful as one might think when they are applied under unfavorable circumstances. JEL Classification C45, C52, C53, C58, G12 Keywords asset pricing, machine learning, return predic- tion, regression, decision tree, random forest, neural network Title On the Utilization of Machine Learning in Asset Return Prediction on Limited Datasets Author's e-mail petrasek.lks@gmail.com Supervisor's e-mail barunik@fsv.cuni.cz
Basics on persistent homology
Novák, Jakub ; Šťovíček, Jan (advisor) ; Hrbek, Michal (referee)
Abstract:In this work, the reader is introduced to the theory of persistent ho- mology and its applications. In the first chapter we will show the basics of sim- plicial and singular homology and we will prove the basic relations, especially the independence of simplicial homological groups on the chosen △-complex and isomorphism between homological groups of homotopic spaces. In the second chapter, we explain the motivation behind persistent homology, describe its al- gebraic structure and how it can be visually represented. We describe and prove the corectness of the algorithm for its calculation. We then illustrate the theory on an example. 1
Anthracological perspective on vegetation history in Roztoky u Prahy
Prach, Martin ; Novák, Jan (advisor) ; Beneš, Jaromír (referee)
This thesis researches forest history and human impact on it in prehistory and early Middle Ages by means of soil charcoal analysis, i.e. pedoanthracology. It focuses on a site called "Roztocký háj" with long-term human settlement near Roztoky u Prahy in central Bohemia. Pedoanthracology brings information about past woody vegetation that is very local and without much anthropogenic influence. On the other hand, archeoanthracology focuses on charcoal originating from archeological excavations directly from human settlements. These charcoals are therefore formed by human behaviour and provide general view on woody vegetation in wider surroundings of the site. Comparing results of these two approaches in Roztoky is allowed by long-term archeological excavations. They provided previously analyzed and partially published charcoal dataset. Newly obtained pedoanthracological dataset brings finer spatial scale, allows to find out the effect of local conditions on the charcoal spectra and also allows identification of possible purposefully selected taxa in the archeoanthracological assemblage. Another part of this work describes present-day vegetation around the soil profiles and examines it's possible continuity with the past vegetation. 4 soil profiles provided quite species-rich (17 taxa) charcoal...
Programming tools for development of algorithms and programs at elementary school
Dümont, Jan ; Novák, Jaroslav (advisor) ; Vaňková, Petra (referee)
The bachelor thesis is centred on an educational area algorithm development and programming at basic schools. The main aim is an overview and a description of teaching methods and programmes which promote the development of student's computional thinking. The thesis contains an analysis of researches which describes the situation of teaching algorithm development and programming at basic schools in 2006-2007 and in 2013. The analysis was realized by Department of Information Technology and Education at Faculty of Education at Charles University. Next part is a definition of basic concepts relating to this topic and at the end there are two examples of worksheets prepared for concrete methods.
Gait as a diagnostic marker for neurodegeneration
Pytlíčková, Kristýna ; Novák, Jan (advisor) ; Kotěrová, Anežka (referee)
This bachelor theis describes the relationship between gait and neurodegenerative diseases. The beginning of the work is devoted to the general definition of walking and factors that contribute to its variability. The strucutre of the walk cycle is described and what phases of the cycle look like. Subsequently, the evolutionary aspect of bipedia is outlined. The next part is devoted to the neural control of motor work. It describes which areas of the central and peripheral nervous system are involved in it and how the entire pathway from the central system, where the stimulus to motion is generated, through the nerve pathways to the periphery, where the movement is performer by the muscle unit. Then the thesis deals with individual methods used for quantification of walking. For the purposes of this work, these are divided into standardized ones that are routinely performer in a clinical setting, ie in hospital or laboratory, and real-life measurements, which are used for long-term monitoring in the patient's everyday life conditions. Standardized tests are further divided into non-invasive and invasive depending on whether or not the integrity of the individual is impaired. Practical application of these methods is described on four selected neurodegenerative diseases. Attention is focused on...
Modular strucutres
Holubec, David ; Novák, Jakub (referee) ; Tobola, Ondřej (advisor)
The bachelor thesis deals with the design of recreational garden architecture, which will serve as a shading object and will use the principles of tensegrity structures.

National Repository of Grey Literature : 494 records found   1 - 10nextend  jump to record:
See also: similar author names
46 NOVÁK, Jakub
76 NOVÁK, Jan
4 NOVÁK, Jaromír
17 NOVÁK, Jaroslav
7 NOVÁK, Jindřich
79 NOVÁK, Jiří
39 NOVÁK, Josef
76 Novak, Jan
39 Novak, Josef
46 Novák, Jakub
1 Novák, Jakub Štěpán
76 Novák, Jan
4 Novák, Jaromír
17 Novák, Jaroslav
7 Novák, Jindřich
79 Novák, Jiří
39 Novák, Jiří Karel
2 Novák, Jiří,
39 Novák, Josef
76 Novák, Ján
79 Novák, Jíří
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