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Deep reinforcement learning and snake-like robot locomotion design
Kočí, Jakub ; Dobrovský, Ladislav (referee) ; Matoušek, Radomil (advisor)
This master thesis is discussing application of reinforcement learning in deep learning tasks. In theoretical part, basics about artificial neural networks and reinforcement learning. The thesis describes theoretical model of reinforcement learning process - Markov processes. Some interesting techniques are shown on conventional reinforcement learning algorithms. Some of widely used deep reinforcement learning algorithms are described here as well. Practical part consist of implementing model of robot and it's environment and of the deep reinforcement learning system itself.
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Mobile Application Monitoring Using TLS Fingerprints
Kočí, Jan ; Grégr, Matěj (referee) ; Matoušek, Petr (advisor)
The main purpose of this thesis is to study the possibility of using TLS fingerprints for mobile application monitoring and apply these methods to monitor network flows created by the Flowmon probe. To create the fingerprints the JA3 and JA3S methods are used. Apart from the TLS fingerprints, the implemented classifier uses SNI values to classify input flows. First, a dataset containing fingerprints of selected applications is created. This dataset is used together with the implemented classifier to classify input flows. Following is a description of the proposed classification methods and the implemented classifier. The classifier is evaluated using the Accuracy, Precision and Recall evaluation metrics. Finally, the classifier is used in several experiments that demonstrate its possible applications.
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Optimization of PID controller using evolutionary computing techniques
Kočí, Jakub ; Matoušek, Radomil (referee) ; Lang, Stanislav (advisor)
This bachelor thesis deals with using evolutionary computation for tuning up PID controller. In research part there are summarised information about regulation and another background information about quality of regulation and ITAE criterion. Practical part consist of implementing three evolutionary computation algorithms - differential evolution, evolution strategy and genetic algorithm. These and MATLAB's function ga() are compared on two systems mutually and to Ziegler-Nichols rule. Basic comparsion is followed by statistical evaluation on second system.
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Recommender System for Web Articles
Kočí, Jan ; Kesiraju, Santosh (referee) ; Fajčík, Martin (advisor)
Tématem této bakalářské práce jsou doporučovací systémy pro webové články. Tato práce nejdříve uvádí nejpopulárnější metody z této oblasti a vysvětluje jejich principy, následně navrhuje požití vlastní architektury, založené na neuronových sítích, která aplikuje metodu Skip-gram negative sampling na problematiku doporučování. V další části pak implementuje tuto architekturu společně s několika dalšími modely, požívající algoritmus SVD, collaborative filtering s algoritmem ALS a také metodu Doc2Vec k vytvoření vektorové reprezentace z obsahu získaných článků. Na závěr vytváří tři evaluační metriky, konkrétně metriky RANK, Recall at k a Precision at k, a vyhodnocuje kvalitu implementovaných modelů srovnáním výsledků s nejmodernějšími modely. Kromě toho také diskutuje o roli a smyslu doporučovacích systémů ve společnosti a uvádí motivaci pro jejich používání.
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Well-being, methods of measuring well-being and their practical application
Kosková, Kateřina ; Kočí, Jana (advisor) ; Váchová, Alena (referee)
This thesis explores the topic of well-being in university students and related subjects, such as positive psychology, quality of life, and happiness. It introduces readers to the possible approaches of this concept and attempts to clearly define it's direction and purpose. One of the most well-known contemporary studies in this field is the Theory of Well-Being by American psychologist M. Seligman, through which the PERMA model was introduced. The aim of this bachelor's thesis is to measure well-being in a randomly selected group of university students using a questionnaire survey method. Translated PERMA™ model questionnaire enriched with 4 additional questions and a questionnaire from the Organization for Economic Cooperation and Development were used to obtain the data. The theoretical part also introduces research questions, which are subsequently answered in discussion based on the analysis and summary of individual data.
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Health and safety protection at a selected secondary vocational school
Freslová, Veronika ; Kovaříková, Miroslava (advisor) ; Kočí, Jana (referee)
This diploma thesis deals with the issue of health and safety protection in the environment of a selected secondary vocational school and related health risks and the possibility of accidents. The aim of the work will be to identify weaknesses in the field of health and safety protection at the selected secondary school based on a questionnaire survey and, based on the results, to propose methods and possibilities for increasing awareness of health and safety protection, as the basic conditions for compliance with the rules of health and safety protection at school by the pupils themselves. The output of the work will be not only knowledge of the real situation of practicing health and safety at a selected secondary school, but also a proposal of how to better inform pupils and also involve them in the process of how they themselves can take care of their own health and safety protection in the school environment. Part of the output of the work will also be a recommendation to the school staff in the direction of the adequacy of the methods used to educate pupils in the field of health and safety protection at school. The theoretical basis of this diploma thesis is based on the available professional literature devoted to this topic, at the same time it is based on empirical experience gained from...
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Possibilities of integrating kinesthetic teaching methods into the plan of education and care in children's group
Petrouová, Lenka ; Kovaříková, Miroslava (advisor) ; Kočí, Jana (referee)
The diploma thesis is focused on the significance of use of kinesthetic teaching methods in the annual plan of education and care in children's group. The theoretical part is devoted to basic terminology, the definition of key concepts, such as health and its support in preschool education, and the characteristics of children's groups as a specific form of pre- primary education. The following chapters introduce the age-specific features of preschool age with focus on motor skills. This part closes with a chapter dedicated to the curriculum of children's groups, presenting documents that can be used in the creation of a formal curriculum, the characteristics of kinesthetic teaching methods and the importance of movement with positive development of a child. The chapter dealing with movement and defining the concept of kinesthetics is crucial to the entire thesis. In its introduction, the practical research part represents the objectives of the research investigation, a description of the methodology, characteristics of the interview, research assumptions and an analysis of the school environment of the Sluníčko Children's Group, where the entire work was carried out. This is followed by a presentation of movement activities designed by me, using kinesthetic teaching methods and their evaluation in...
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Well-being of university pedagogues in workplaces related to social relationships and communication
Hnízdilová, Kristýna ; Kočí, Jana (advisor) ; Kovaříková, Miroslava (referee)
The diploma thesis on the topic of Well-being of university teachers in the working environment from the point of view of social relations and communication deals with occupational well- being in the field of social relations and communication. The theoretical part of the work defines the concept of well-being, explains its effect on health, connections with social relations and communication, and provides an overview of the specifics of occupational well-being in the university environment. The practical part is devoted to the research, which was aimed at university teachers of the Department of Multimedia at the Faculty of Informatics and Statistics of the University of Economics in Prague. Its aim was to find out what the occupational well- being of these teachers is in terms of social relations and communication in the workplace. This is because it is a specific department where pedagogic and commercial activities are linked, so it was expected that this phenomenon would be reflected in workplace relationships and the attitude towards them, as well as occupational well-being. The research was carried out in the form of a questionnaire filled out by teachers of the department and was supplemented by an interview with the head of the department. The results were generally positive and showed that...
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