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Analysis of Classification Methods
Juríček, Jakub ; Zendulka, Jaroslav (referee) ; Burgetová, Ivana (advisor)
This work deals with the classification methods used in the knowledge discovery from data process and discusses the possibilities of their validation and comparison. Through experiments, the work focuses on the analysis of four selected methods: Naive Bayes classificator, decision tree, neural network and SVM. Factors influencing basic characteristics such as training speed, classification speed, accuracy are examined. A part of the thesis is a desktop application, which is a tool for training, testing and validation of individual methods. Eleven reference data sets are selected for experimental purposes. At the end of this work experimental results of comparison and observed characteristics of classification methods are summarized.
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Porovnání úrovně a vyváženosti vypsaných národních a mezinárodních drezurních úloh za použití měřícího zařízení Equimo tracker
Zourková, Barbora
This diploma thesis is entitled Comparison of the level and balance of the listed national and international dressage tests using the Equimo tracking device. Its goal was to get information about dressage tests. Their duration, distance, symmetry in each gait, and calories burned were observed. Twelve dressage tests were chosen from five levels of difficulty Z to T. Each test was registered three times. All testing was performed by one rider on one horse using the Equimo device. In general, it could be evaluated that, from the point of view of duration, distance, and calories burned, the degrees of difficulty Z and L were very similar, followed by S, ST, and T. The most extreme differences were found in the symmetry of the sides for the DU-A test and the duration of the Z4 test.
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Opakované porovnání konvenčního a minimalizačního zpracování půdy
POLAN, Tomáš
The diploma thesis deals with soil treatment procedures and contains individual options and describes their advantages and disadvantages. It focuses on two technologies, which are compared in terms of fuel consumption, the time required to perform work operations and the condition of the crop. This is a follow-up to a previous bachelor's thesis on the same topic. The results of both experiments and annotated aspects that influenced the experiments are described.
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The yield, risk and liquidity of investment options
ZÁMEČNÍKOVÁ, Veronika
In this thesis I am focusing on financial investments, their yield, risk and liquidity and portfolio. First I will divide financial and capital markets, characterize investments and investing process phases. Financial instruments, into which investor can deposit his free finances, such as stocks, bonds, unit trusts, money deposits, commodities, real estate, or foreign exchange market are introduced to the reader. The investor has various options, but in my thesis, I will focus on financial investment. In the next chapter I will define 3 important terms, yield, risk, and liquidity, and how to calculate those values. I will also shortly inform about portfolio and calculation of its yield and risk. In the last chapter of the theoretical part I will introduce investment strategies, that investor can approach, based on investment period, approach to risk and risk of inflation. For the practical part of my thesis I chose savings account, state and corporate bonds and stocks. For chosen instruments I calculated yield, risk and guessed liquidity. Due to the nature and comparison of chosen investments I calculated only current yield. For risk I set up time period of three years. For chosen bonds the duration was calculated. Data that have been used in this thesis had to be months old, because of the COVID-19 epidemic, that had negative effects on stocks markets. I compared the results and, in the end recommended a suitable strategy for set investors.
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Interest Rate Risk Analysis by Principal Component Method
Myšičková, Ivana ; Houfková, Lucia (advisor) ; Prášková, Zuzana (referee)
Presented study analyzes interest rate risk associated with the possession of given fixed coupon bond. In the first chapter, we define some of the basic concepts and provide description of available data. These are historical data on spot interest rates of zero-coupon bonds for various times to maturity which will be used for the construction of the yield curves. Based on these bond yield curves we evaluate the bond, thus obtaining a picture of the evolution of its price. Later on, we try to estimate its price tomorrow. We present two approaches how to deal with this problem. First approach is the normal interest rate risk analysis based on duration and convexity, second approach is the method of principal components which will be applied to the historical daily changes in yield curves. The method of principal components is introduced in detail.
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Acoustic properties of monosyllabic words in semi-spontaneous dialogues and read speech
Ondrušková, Lucie ; Volín, Jan (advisor) ; Machač, Pavel (referee)
This thesis investigates temporal characteristics of monosyllabic words (je, se, že) in semi-spontaneous dialogues and read speech. Our material consisted of two sets of recordings from six speakers (three men and three women). The speakers read a text first, and this reading was followed by a recording of a spontaneous dialogue. We investigated differences of temporal characteristics of monosyllabic words between the two types of speech. In addition, we also examined how these characteristics are affected by different variables, which included: position in a stress group, presence of stress, presence of pause and speaker's personality. It was found that the type of speech had a significant influence on duration ratio of sounds in examined words je, že. Word se remained unaffected by the type of speech and generally appeared as a very stable element. The type of speech also influenced variability in duration - this variability proved to be higher in spontaneous speech. The type of speech did not affect average duration of words je, se, že. Position in the stress group also proved to have a significant effect on duration of words. This effect was mainly caused by words which created isolated stress groups - words in such position had longer duration than words in other positions. For words je, se...
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Phone durations in multi-syllable words with Czech analogues in Czech English
Růžek, Jan ; Volín, Jan (advisor) ; Skarnitzl, Radek (referee)
This diploma thesis examines the foreign accent of Czech speakers in English. We focus on the factor of phone duration, which relates to both segmental and prosodic levels of phonetic description and is one of the correlates of prosodic prominence and speech rhythm. 84 words were selected from the texts avaible in the Prague Phonetic Corpus that have analogues in the loanword lexicon of Czech. Pronunciations of these words by native speakers (professional radio reporters) were compared with productions by Czech university students. The students were recorded prior to atteding a course in English phonetics. Based on our observations of durational patterns, we infer some plausible tendencies to be expected in Czech production of English. As durational interference from Czech into English has up to this date been a relatively unresearch domain, the present study adopts a qualitative research methodology. Keywords: Duration, Foreign Accent, Czech English, Interference 6
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Acoustic properties of word stress in read Czech English
Liska, Jan ; Volín, Jan (advisor) ; Skarnitzl, Radek (referee)
key words: Czech English, foreign accent, word stress, word accent, stressed syllable, duration, f0, acoustic cues. This study investigates the acoustic properties of word stress in Czech English. The notion of foreign accent is introduced and its drawbacks are presented. Further on the various influences on the perceived degree, or strength, of foreign accent are discussed. Faulty realization of word stress is identified as one of the factors that contribute to unintelligibility of non-native speech (Benrabah, 1997; Hahn, 2004; Cutler, 1984). In Chapter 2 we compare the results of studies that used speakers of a variety of languages and form a basic theory on the acquisition of acoustic cues to word stress. We are mostly interested in f0 and duration. This theory, based on the feature hypothesis (McAllister et al., 2002 in Lee, Guion & Harada, 2006), states that languages that have a similar stress system to that of English (Dutch, Arabic) use their native cues to signal word stress, while non-contrastive languages (Vietnamese, Czech) prefer cue/s that are phonologically active on segmental level in their native language. Speakers of Vietnamese, a tone language, were found to prefer f0 over duration (Nguyen, 2003), so for Czech, a language that uses phonological vowel duration, it is expected that...
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Marriage duration specific fertility trends
Přibil, Martin ; Rychtaříková, Jitka (advisor) ; Šídlo, Luděk (referee)
Marriage duration specific fertility trends Abstract The aim of this Master thesis is to describe the development of the marital fertility in the Czech Republic with focus on the analysis of the period between the marriage and the birth of child of a given order in the current marriage. It shows trends in the marital fertility in the time period between 1974 and 2011from transverse and longitudinal view. Using selected indicators the thesis describes different development of the marital fertility in the given period, which is closely connected with the distinct social and demographic situation in the Czech Republic prior and after the year 1989. In the whole monitored period the number of marriages is decreasing significantly. There was a significant increase both in a number and ratio of the children born alive outside of marriage, and on the opposite, decrease in the number and ratio of children born alive within the marriage. Within the framework of the current marriages substantial changes of the reproductive behavior occurred with an obvious breaking point in 1989. Since that time significant decrease in number of children, both in total and in the number of children of a given order has started. At the same time significant prolongation of the period between the start of marriage and birth of a child...
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Interest Rate Risk and Liquidity Risk of Banking Books in the Czech Republic
Džmuráňová, Hana ; Tůma, Zdeněk (advisor) ; Tripe, David (referee) ; Witzany, Jiří (referee) ; Kotlán, Viktor (referee)
Univerzita Karlova v Praze Fakulta sociálních věd Institut ekonomických studií Název disertační práce/ Dissertation title Interest Rate Risk and Liquidity Risk of Banking Books in the Czech Republic Anglický překlad / Title in English Interest Rate Risk and Liquidity Risk of Banking Books in the Czech Republic Autor/ka/ Author Mag. Hana Džmuráňová Rok zpracování/ Year 2021 Školitel / Advisor Doc. Ing. Zdeněk Tůma CSc. Počet stran / No. of pages 197 Abstract in English The thesis Interest Rate Risk and Liquidity Risk of Banking Books in the Czech Republic deals with the management of interest rate risk and liquidity risk stemming from the core banking system purpose - the maturity transformation. Across five articles, we provide comprehensive theoretical description, regulatory background, and develop models for embedded behavioural options of client products such as non-maturity deposits, with special focus on savings accounts in the Czech Republic in one of our case studies, or loans with prepayment option. We apply our models on the major Czech and Slovak banks and we calculate the exposure of those banks to interest rate risk in terms of regulatory guidelines. We derive that all banks in our analysis are positioned to benefit when interest rates increase as demand deposits like current accounts are...
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