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Clod Computing System for Real-time Data Processing
Nosková, Daša ; Jeřábek, Kamil (referee) ; Rychlý, Marek (advisor)
This thesis focuses on designing a system for processing a large stream of geo-localized temporal data in real-time. The theoretical part addresses concepts and tools for real-time data processing and characteristics of real-time systems. The thesis introduces the design and architecture of a scalable system that utilizes message queues. Furthermore, the main concepts of implementation of the proposed system are outlined, using technologies emphasizing fast response times. As part of the work, a scalable system capable of processing a large data stream was developed.
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Optimization of Classification Models for Malicious Domain Detection
Pouč, Petr ; Jeřábek, Kamil (referee) ; Hranický, Radek (advisor)
Tato diplomová práce se zaměřuje na rozvoj pokročilých metod pro detekci škodlivých doménových jmen s využitím optimalizačních technik v oblasti strojového učení. Práce zkoumá a hodnotí účinnost různých optimalizačních strategií pro klasifikaci. Jako nástroje pro hodnocení jsem vybral klasifikační algoritmy, které se liší v jejich přístupu, včetně hlubokého učení, techniky rozhodovacích stromů, nebo hledání hyperrovin. Tyto metody byly posouzeny na základě schopnosti efektivně klasifikovat doménová jména v závislosti na použitých optimalizačních technikách. Optimalizace zahrnovala vytvoření přesně označených datových sad, aplikaci technik zpracování dat, pokročilou selekci atributů, řešení nerovnováhy tříd a ladění hyperparametrů. Experimentální část práce prokazuje vynikající úspěšnost kombinováním jednotlivých metod. Přičemž nejlepší modely CNN dosahovaly až 0.9926 F1 při současném snížení FPR na hodnotu 0.300%. Přínos práce spočívá v poskytnutí konkrétních metod a strategií pro efektivní detekci škodlivých doménových jmen v oblasti kybernetické bezpečnosti.
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Segmentation of hyperspectral images of lizards
Kotrys, Kryštof ; Parák, Roman (referee) ; Škrabánek, Pavel (advisor)
Tato diplomová práce se zaměřuje na tvorbu systému pro segmentaci hyperspektrálních fotografií ještěrek žijících na území České republiky. První část práce obsahuje shrnutí existujících metod segmentace obrazu, informací o hyperspektrálním obrazu a konvolučních neuronových sítí. Druhá část práce navrhuje postup pro zpracování dat, které vede k tvorbě segmentovaných masek pro zadanou datovou množinu a také prezentuje získané výsledky.
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Data Concentrator of 3D Printer's Sensors and Devices
Vaculík, Samuel ; Rusnák, František (referee) ; Arm, Jakub (advisor)
The bachelor thesis consists of designing and implementing a system for collecting data related to 3D printing. The aim is to define the variables suitable for measurement, select sensors for the measurements and implement them on the printer. The next point is the design and implementation of data acquisition from the printing firmware Klipper for collecting print data. Then the task is to implement the software for processing data from the individual measurement sources, including data flow analysis in the system.
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Password Leaks Automated Processing
Dvořák, Jakub ; Veselý, Vladimír (referee) ; Pluskal, Jan (advisor)
The aim of this thesis is to find databases of leaked data and to create an application capable of processing the data, storing it in a suitable database and enabling searching of the data on the basis of significant data. Among other things, the work deals with database research and measurement of uploading and data retrieval speeds, in order to select a suitable database used in the final solution. The resulting application is able to detect the encoding of the input file, the data format and stored items. Using the web interface, it also allows data to be searched based on filtering conditions from a database that has 5 157 229 040 records of leaked data at the time of theses submission. The results of this thesis provide a tool for processing and analysing databases of leaked passwords.
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Industrial log server with data visualization
Asszonyi, Jakub ; Holasová, Eva (referee) ; Kuchař, Karel (advisor)
The thesis focuses on the complex design, development and implementation of an industrial logging server with integrated data visualization. The aim of the thesis was to conduct a research of the current state of the art in the field of operational and industrial technologies. The thesis also deals with basic data processing and presentation, where an analytical search of open-source tools for creating REST APIs was performed. The work includes the implementation of an industrial network simulation using the industrial Modbus protocol. The industrial logging server was developed in the Docker virtualization environment and is structured into four basic parts: a REST API (FastAPI), a user interface (Next.JS), a database (InfluxDB) and a server agent providing communication between the industrial network and the server (Telegraf). Furthermore, the paper discusses the security of the industrial server both in terms of unauthorized access to the database and user interface, and in terms of access to the server from the industrial network. In the last part of the thesis, testing of the server efficiency and functionality of all implemented parts has been done.
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Realtime system for web analytics
Hrubý, Otto ; Kaczmarczyk, Václav (referee) ; Holek, Radovan (advisor)
This thesis deals with the design of a realtime system for web analytics. The aim of this work was to implement this system. At first, research was conducted on existing tools and suitable technologies, based on which the system architecture was designed. Data from websites are collected by tagging the pages with JavaScript. The collected data are sent to the public cloud, where the system is deployed. The system processes the data, stores them in a database and makes it accessible to users through an information system.
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Analysis and Visualizaion of Brno Public Transport Data
Lazúr, Juraj ; Škarvada, Libor (referee) ; Hynek, Jiří (advisor)
The planning and management of modern public transport systems requires knowledge of the behaviour of the systems in a real environment. The aim of this thesis is to simplify the procedure of extracting useful knowledge from vehicle delay data in the Brno public transport system. The solution to the problem consisted in the design and implementation of a tool that will autonomously process and analyze this data. The outputs generated by the implemented tool provide support for planning, implementation and evaluation of changes in the public transport system. They also allow the detection of critical points and recurring patterns in the system. The results of this work allow for a more efficient operation of the public transport system and should serve to increase the satisfaction of the travelling public.
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Legal Foundation for Protection of Personal Data in SMEs in Accordance with Czech and EU Law
Ziková, Anna ; Luhan, Jan (referee) ; Kříž, Jiří (advisor)
The Diploma Thesis deals with the analysis of selected personal data regulations of Czech Republic and European Union and description of rights and obligations for controller and processor that result from those regulations. The aim of the thesis is to create recommendations for small and medium enterprises for processing personal data based on the previously mentioned assessment. The thesis is composed of three parts, a theoretical one, where the basic terms such as Business Intelligence, personal data or controller will be explained, analytical one, containing content analysis of selected regulations, and solution proposal part, where certain recommendations for small and medium enterprises will be carried out.
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