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Automated Weight Tuning for Rule-Based Knowledge Bases
Valenta, Jan ; Pokorný, Miroslav (referee) ; Zbořil, František (referee) ; Jirsík, Václav (advisor)
This dissertation thesis introduces new methods of automated knowledge-base creation and tuning in information and expert systems. The thesis is divided in the two following parts. The first part is focused on the legacy expert system NPS32 developed at the Faculty of Electrical Engineering and Communication, Brno University of Technology. The mathematical base of the system is expression of the rule uncertainty using two values. Thus, it extends information capability of the knowledge-base by values of the absence of the information and conflict in the knowledge-base. The expert system has been supplemented by a learning algorithm. The learning algorithm sets weights of the rules in the knowledge base using differential evolution algorithm. It uses patterns acquired from an expert. The learning algorithm is only one-layer knowledge-bases limited. The thesis shows a formal proof that the mathematical base of the NPS32 expert system can not be used for gradient tuning of the weights in the multilayer knowledge-bases. The second part is focused on multilayer knowledge-base learning algorithm. The knowledge-base is based on a specific model of the rule with uncertainty factors. Uncertainty factors of the rule represents information impact ratio. Using a learning algorithm adjusting weights of every single rule in the knowledge base structure, the modified back propagation algorithm is used. The back propagation algorithm is modified for the given knowledge-base structure and rule model. For the purpose of testing and verifying the learning algorithm for knowledge-base tuning, the expert system RESLA has been developed in C#. With this expert system, the knowledge-base from medicine field, was created. The aim of this knowledge base is verify learning ability for complex knowledge-bases. The knowledge base represents heart malfunction diagnostic base on the acquired ECG (electrocardiogram) parameters. For the purpose of the comparison with already existing knowledge-basis, created by the expert and knowledge engineer, the expert system was compared with professionally designed knowledge-base from the field of agriculture. The knowledge-base represents system for suitable cultivar of winter wheat planting decision support. The presented algorithms speed up knowledge-base creation while keeping all advantages, which arise from using rules. Contrary to the existing solution based on neural network, the presented algorithms for knowledge-base weights tuning are faster and more simple, because it does not need rule extraction from another type of the knowledge representation.
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Formula Car Frame Alternative Design
Škaloud, Martin ; Dundálek, Radim (referee) ; Ramík, Pavel (advisor)
The diploma work focuses on the proposal of formula car support frame type alternative designed for international students´ competition Formula Student. As a first is this competition shortly described. Following basic information about possible support frame in competition, the rules description for the frame from thin-walled profiles as well as for composite structure. As the other are shown the most used material types by the tube frames. Continues the practical (design) part of the work. The work continues in construction/design part. Here are mentioned the requirements for the frame creating, calculation of each torsion strength and construction proposal including creating the analysis model. In the final part is realize the simulation in FEM program and simply described the alternative proposal together with the evaluation.
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Testing of QoS support in experimental data network
Fogl, Miroslav ; Škorpil, Vladislav (referee) ; Novotný, Vít (advisor)
This work deals with the qualitative requirements on services in IP networks based on technology Ethernet. We describe basic methods for imposing quality control mechanisms on services within networks. We elaborate on the ways, in which packets can be handled, overload controlled and transfer speed in network elements limited. Attention is given also to the Network Layer and Link Layer. Based on concrete specifications of network devices in UTKO laboratory an experimental network was designed and constructed. Network consisting of routers and switches linked several servers with client stations. Various types of data transfers (VoIP, HTTP, FTP, video) were generated. Several techniques for handling packets with different priorities were verified and compared. We observed that, in situations when connections are under full load, implementation of QoS support in the network becomes very important. This observation was confirmed by measurements. We also measured the parameters of the system during simulations of various situations, such as overload of a connection due to unsolicited operations or failure of a connection between routers. In order to guarantee the quality of services it is necessary to create a domain, in which rules are consistently observed in all network elements.
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Knowledge Data Discovery
Jaroš, Ondřej ; Stryka, Lukáš (referee) ; Jurka, Pavel (advisor)
This Bachelor work describes knowledge data discovery. There are in detail described methods of data mining in this text. This work is focusing principally on Associative rules method of knowledge data discovery, applying Apriory algorithm. The purpose of this work was to implement chosen method and verify its functionality on particular sample of data. Application is implemented in Java programming language and the sample of data, used for our method, is saved in XML file. Application doesnt work with classic database, but with XML file. Information needed to run the program is loaded from input (system) XML document. Discovered data are saved to system XML document.
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Formula Student Front Chassis Part Design
Lhota, Martin ; Svída, David (referee) ; Ramík, Pavel (advisor)
Martin Lhota Formula Student Front Chassis Part Design DW, IAE, 2011, 75 pp, 62 pics The aim of the thesis is to suggest a suitable configuration of Formula Student Car’s front part of a frame according to current rules of SAE organization in the Formula Student competition. In this proposal low weight, manufacturability and sufficient torsion rigidity were preferred, whereas previously suggested solutions were reflected. At first there is presented a list of important SAE rules for the construction of front part followed by a short recherché of development of the constructional solution of frames and frames suitable for Formula Students car. Secondly there is described process during frame construction design and its computational model for the analysis which simulates torsion with the support of MKP system. Gained results and some parameters of the frame are compared with similar version of the frame construction which was suggested and made for the first Formula Student Car of our University. Moreover, there is also presented summary of suggested frame and also recommendation with possible alternatives for the next development.
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Knowledge representation methods
Verbík, Josef ; Polách, Petr (referee) ; Jirsík, Václav (advisor)
This thesis deals with methods of knowledge representation within expert systems. The thesis describes the expert systems and their history. Furthermore, it provides a description of individual types of expert systems and their components. Following this description, there is a characteristic of the knowledge representation. These characteristic has been divided into two parts. The first part describes the requirements neccessary for efficient knowledge representation. The second part describes the following individual methods of knowledge representation: rules, frames, semantic nets and predicate logic.
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Comparison of existing and innovative teaching of futsal in primary schools.
Šmejc, Ondřej ; Pokorný, Ladislav (advisor) ; Suchý, Jiří (referee)
The thesis aims at teaching futsal in primary schools. In this thesis we would like to highlight the issue of teaching futsal in primary schools, as it is often not about teaching futsal, but only about indoor football. We will try to shed light on the main problems and show the way for teachers how this sport should be taught properly in schools. It covers the historical development of futsal and the evolution of the sport in the RVP, rules, movement skills and abilities, game activities of the individual, game combinations and game systems. The work also includes two exercise books, an existing one and an innovative one. The ambition of the thesis is to highlight the improvement of skills and abilities in futsal through specialized futsal training and to provide teachers or university students with a clear manual for teaching the sport. KEYWORDS Futsal, training, methodology, technique, system, rule
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Checking SQL Code Properties
Bali, Filip ; Bartík, Vladimír (referee) ; Rychlý, Marek (advisor)
This thesis focuses on checking the properties of SQL code based on static analysis using predefined rules. The rule represents a basic element of the check. The user can define their own rule and include it in the check. A rule usually contains a set of conditions that are contained in an algorithm that checks nodes in an abstract syntactic tree. Abstract syntactic tree is created from an input SQL statement and customized so that rules can be applied over its nodes. If the rule detects an error, then it can generate a report. These reports are then displayed on the selected output. Based on the thesis, an open source program in the Python3 programming language was implemented. This program is publicly available.
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Backfire
Jan, Šimon ; Absolon, Tomáš (referee) ; Tajovský, Jakub (advisor)
The central point of my work is setting the rules of the process of creation and then exploring the tendency to deepen or break these rules. I see the definition of my own field on the basis of rules as, among other things, the essence of anchoring my creative personality within my artistic practice. The thesis also develops the relationship between two formats and two materials in one painting. Central to this is the technique of pyrography and its ambivalent symbolism of an irreversible act, destruction yet protection. The paintings contain symbols in the form of two competing or cooperating shapes inspired by biological rhythms. Furthermore, this work explores issues of line, area, boundary, framing, repetition and gamification.
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Origin and development of women's ice hockey
Frolíková, Tereza ; Kašpar, Ladislav (advisor) ; Pokorný, Ladislav (referee)
The subject of the bachelor's thesis is a summary of women's ice hockey from history to the present in the world and in our country. The main goal is therefore an overall analysis of the development of this sport, how women's hockey was created and developed, when it experienced the greatest boom and when, on the contrary, it declined. The secondary goal is to outline the development of the rules and summarize the current situation of women's hockey. In the beginning of the thesis, a brief description of this sport is given and the origin of hockey is described. Furthermore, the most famous women's hockey names are mentioned here, and at the end of the work, the differences between the rules of women's and men's ice hockey are defined. Key words: ice hockey, women's hockey, match, history, rules
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