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Modelling and Analysis of Logistics Processes by Applying Process and Data Mining Techniques
Rudnitckaia, Julia ; Wang, Hao (referee) ; Zendulka, Jaroslav (referee) ; Hruška, Tomáš (advisor)
In this thesis, we propose an approach for modelling hidden and unknown processes and subprocesses in the example of a seaport logistics area. Having the underlying process model makes it possible to exploit more advanced algorithms since deviations and main paths are becoming visible and better controlled. The obtained model is the foundation for the core research of this work and will be enriched with key performing indicators and their forecast by applying advanced process mining, statistics, and machine learning techniques. The main difference of the approach is that we take as a target variable not any specific value, but the object - a process variant or a process type with a set of parameters. Bottleneck analysis, from one side, and predictive analysis, on the other hand, are enforced with context-aware information, especially with these additional objective process attributes. Furthermore, the support of the descriptive ("As is") current process model with certain notation and the integration with relevant bottleneck and predictive methods compromise the advantages of the approach. The work primarily focuses on the design of algorithms and methods for supporting logistics data analysis. However, it can be adjusted and applied to other areas accordingly, which makes the approach flexible and versatile. The result of the work is the framework for unstructured process modelling and the key process parameters predictive method. This analysis of processes with their attributes might be used for decision-making systems and process maps in future.
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Specialized Instruction Design
Koscielniak, Jan ; Zachariášová, Marcela (referee) ; Hruška, Tomáš (advisor)
The purpose of this thesis is to design and implement specialized instructions for RISC-V instruction set architecture. These instruction are used to accelerate a set of selected cryptographic algorithms. New instructions are implemented in Codasip Studio for 32bit processor model with RV32IM instruction set. Open source implementations were selected and edited to use new instructions. Instructions were used on respective algorithms, tested and profiled. The outcome of this thesis is instruction set extension, that enables up to seven times speed up, depending on used algorithm.
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C Compiler for AVR32 Microprocesor
Nagy, Michal ; Husár, Adam (referee) ; Hruška, Tomáš (advisor)
This bachelor's thesis deals with creation of an AVR32 backend for the LLVM compiler framework. The core of this work consists of explaining the way of architecture description in LLVM and of my own implementation of the AVR32 backend. Furthermore, several problems encountered during the implementation are discussed along with their possible solutions. As the result of this work functional backend, with a few constraints discussed in the conclusion chapter, was created.
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REmail - Integrating e-mail Communication in the Eclipse IDE
Humpa, Vítězslav ; Šuška, Boris (referee) ; Hruška, Tomáš (advisor)
Developers of software systems have to communicate about the project they are building. Especially when working in a distributed development team, such as open source projects, developers must use an asynchronous means of communication. Studies tell us that e-mails are, by far, the means of communication mostly used during the distributed development, opposed to instant messaging, commit comments, or code comments. Therefore, we can imagine archives containing development e-mails enclose essential information concerning various entities of the source code. Unfortunately, such information gets lost with time, since relevant e-mails are hard to retrieve. We have developed REmail, an Eclipse plug-in, to integrate e-mail communication in the IDE. It allows developers to seamlessly handle source code entities and e-mails concerning the source code, without ever exiting from the IDE. Using lightweight linking techniques, REmail retrieves all the e-mails relevant to the chosen source code entities and makes them available to the developer.
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Compilation of C++ Applications for Embedded Devices
Nosterský, Milan ; Přikryl, Zdeněk (referee) ; Hruška, Tomáš (advisor)
This master's thesis deals with the integrations of C++ programming language and its standard C++11 into the compiler for embedded systems. This compiler is based on LLVM project and it is generated from Codasip Studio. Codasip Studio is tool for design of the aplication specific processor cores, it is also allows generate compiler, which is based on the description of semantics section in processor's instruction set for any target processor architecture. C++ is programming language based on the C, which is extended by object oriented design and many other features. C++ language allows writing of very effective code on high level of abstraction. Funcionality of implementation is tested on testsuite in last phase of master's thesis.
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C++ Arbitrary Precision Floating Point Library
Závada, Vladislav ; Šnobl, Pavel (referee) ; Hruška, Tomáš (advisor)
This thesis deals with the design of a floating point module, which allows to perform operations with floating point operands that have any bit width. For this purpose, the module is implemented as a template class in C ++. The module is designed to allow it to be used when designing an application-specific processor. First, the floating point number and template functions in c ++ are described. In the practical part the algorithms of the individual operations and the design of the module itself are described as template libraries.
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Web Presentations Content Maintenance Information System
Šulc, Zbyněk ; Kolář, Dušan (referee) ; Hruška, Tomáš (advisor)
The object of this elaborate is a concept for realization of system for web site administration. This system needs to be easy to use for people with no experience in web page program coding. Another side of this software is a possibility to supplement other extensions. The function of this system is assigned to users sorted by groups these users belong to.
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Impact of Subjective Visual Perception on Automatic Evaluation of Dashboard Design
Hynek, Jiří ; Herout, Adam (referee) ; Kuric,, Eduard (referee) ; Hruška, Tomáš (advisor)
Analýza vlastností uživatelských rozhraní založená na použití metrik a kvantitativních pravidel grafického designu se zdá být slibným přístupem pro automatické hodnocení vizuální kvality uživatelských rozhraní. Přestože tento přístup nemůže plně nahradit uživatelské testování, může poskytnout dodatečné informace o možných problémech návrhu uživatelských rozhraní v počátečních fázích vývoje a ušetřit tím čas a výdaje v budoucnu. Příkladem je analýza použitých barev a rozvržení grafických elementů na obrazovce. Návrháři uživatelských rozhraní mohou měřit vlastnosti uživatelských rozhraní za použití známých metrik založených na analýze pixelů bitmapy (např. barevnost) nebo grafických elementů (např. vyvážení, symetrie). Problémem použití metrik nicméně je, že tento přístup zpravidla nezohledňuje subjektivní vnímání uživatelů (např. subjektivní vnímání barev nebo grafických elementů rozmístěných na obrazovce). Dnešní uživatelská rozhraní (jako například rozhraní dashboard) jsou komplexní. Skládají se z několika barevných vrstev, obsahují překrývající se grafické elementy, což může zvyšovat nejednoznačnost vnímání tohoto rozhraní uživateli. Může být proto komplikované vybrat takové grafické elementy, které odpovídají elementům rozpoznaným uživateli v souvislosti s principy shlukování vnímaných tvarů (jak je popsáno Gestalt psychologií). Vývoj objektivních metrik a kvantitativních pravidel grafického designu obvykle vyžaduje dostatečně velkou trénovací množinu vzorků uživatelských rozhraní anotovaných dostatečným počtem uživatelů. Tato práce se zaobírá automatickým ověřováním vzhledu uživatelských rozhraní dashboard. Práce kombinuje obecné znalosti týkající rozhraní dashboard s poznatky z oblasti vizualizace dat, vizuálního vnímání a ověřování kvality uživatelských rozhraní a následně zkoumá myšlenku automatického hodnocení vzhledu rozhraní dashboard s využitím metrik. Práce analyzuje vybrané metriky založené na analýze pixelů bitmapy a grafických elementů. Konkrétně zkoumá, jakým způsobem uživatelé rozpoznávají grafické elementy v rozhraních dashboard a výsledky aplikuje pro hodnocení schopnosti metrik (analyzujících grafické elementy rozhraní) objektivně rozpoznávat dobře navržené vzorky rozhraní dashboard. Dále představuje framework pro návrh a vylepšení metrik, který využívá pro vylepšení vybraných metrik. Následně navrhuje metodu pro segmentaci rozhraní dashboard do regionů, které mohou být použity jako vstupy pro tyto metriky. Závěrem práce porovnává vybrané metriky s hodnocením rozhraní uživateli a pokládá otázky vhodné pro budoucí výzkum.
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Attribute Analysis of Charts Used for Data Presentation Using Information Dashboards
Barič, Filip ; Rudnitckaia, Julia (referee) ; Hruška, Tomáš (advisor)
This bachelor thesis is related to the issue of diagrams used for data presentation in informational dashboards. The thesis also explains the process of creating dashboards, basic design principles and the area of human perception. Analysis of each individual diagram, together with their pros and cons and possibilities of use is introduced as well. The primary objective is the research of visual properties and their impact on final usability. Test set was created using the implemented graph generator, working with defined model which describes selected properties of diagrams. As the output of this thesis, a set of recommendations suitable for design of selected diagrams is defined.
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OLAP Data Storage Methods
Dittrich, Petr ; Kroulík, Jan (referee) ; Hruška, Tomáš (advisor)
The topic of the bachelor work is the OLAP core implementation for the data storage space. All theoretical facts about the data storage space are discussed at the start. The form of metadata elements storage and the OLAP cubes creating are described in the following part. And finally, in the last chapter, it is precisely shown how to create a cube in this system.
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