1,720,952 research outputs found
One factor models of interest rates
No full textTitle: One factor interest rate models Author: Matúš Jambor Department: Department of Probability and Mathematical Statistics Supervisor: RNDr. Petr Myška Abstract: In this thesis we looked closely at the models of interest rates that are applied in the area of financial mathematics and actuarial sciences. There are several models that try to describe the behavior of yield curve plausibly. In most of the cases the models stem from probability theory and coincidence. These models are also means for assessment of financial derivates whose price de- pends on the interest rates movements. The work deals with three one-factor models which are analyzed into more details in the second chapter. The last chapter is about real-data calibration. Keywords: one factor models, interest rates, maximum likelihood method
Pricing of the debt instruments with embedded options
No full textTitle: Pricing of the debt instruments with embedded options Author: Bc. Matúš Jambor Department: Department of Probability and Mathematical Statistics Supervisor: doc. RNDr. Jiří Witzany, Ph.D., University of Economics in Prague Abstract: In this thesis we focus on debt instruments with embedded options, which offer the possibility for the creditor or debtor to exercise the option in pre- determined times during its lifetime. With this the Bermudian characteristics it is not possible to price these debt instruments using standard simulation techniques. However, the technique of trinomial trees can be exploited. To preserve consistency with the pricing of fundamental financial instruments, it is suitable to assume that the interest rate follows a stochastic process in the arbitrage free framework. One of the possibilities for modeling the dynamics of interest rates are one-factor models. We have developed a pricing algorithm based on trinomial tree for Hull-White model and Black-Karasinski model which have the desired properties and model parameters are calibrated to the market data. Keywords: trinomial tree, interest rate derivatives pricing, Hull-White model, Black- Karasinski model, instantaneous interest rate
Jednofaktorové modely úrokových sazeb
Get PDFNázev práce: Jednofaktorové modely úrokových sadzieb Autor: Matúš Jambor Katedra: Katedra pravděpodobnosti a matematické statistiky Vedoucí bakalářské práce: RNDr. Petr Myška Abstrakt: V práci študujeme modely úrokových sadzieb, ktoré sa uplatňujú v ob- lasti finančnej matematiky a aktuárskych vied. Existuje niekol'ko modelov, ktoré sa snažia čo najvierohodnejšie popísat' správanie výnosovej krivky, pričom vo väčšine prípadov využívajú aparát z teórie pravdepodobnosti a náhodných procesov. Tieto modely slúžia taktiež na ocenenie finančných de- rivátov, ktorých cena sa odvíja od pohybov úrokových sadzieb. Zaoberáme sa troma jednofaktorovými modelmi, ktoré bližšie predstavíme v druhej ka- pitole. V poslednej kapitole sa budeme venovat' kalibrácii týchto modelov na reálne dáta. Klíčová slova: jednofaktorové modely, úrokové sadzby, metóda maximálnej vierohodnosti 1Title: One factor interest rate models Author: Matúš Jambor Department: Department of Probability and Mathematical Statistics Supervisor: RNDr. Petr Myška Abstract: In this thesis we looked closely at the models of interest rates that are applied in the area of financial mathematics and actuarial sciences. There are several models that try to describe the behavior of yield curve plausibly. In most of the cases the models stem from probability theory and coincidence. These models are also means for assessment of financial derivates whose price de- pends on the interest rates movements. The work deals with three one-factor models which are analyzed into more details in the second chapter. The last chapter is about real-data calibration. Keywords: one factor models, interest rates, maximum likelihood method 1Department of Probability and Mathematical StatisticsKatedra pravděpodobnosti a matematické statistikyFaculty of Mathematics and PhysicsMatematicko-fyzikální fakult
Oceňování dluhových nástrojů s vnořenými opcemi
Get PDFNázev práce: Oceňování dluhových nástrojů s vnořenými opcemi Autor: Bc. Matúš Jambor Katedra: Katedra pravděpodobnosti a matematické statistiky Vedoucí diplomové práce: doc. RNDr. Jiří Witzany, Ph.D., Vysoká škola ekono- mická v Praze Abstrakt: V tejto práci sa zameriame na dlhové nástroje s vnorenými opciami, kto- ré ponúkajú možnosť pre veriteľa alebo dlžníka realizovať opciu v predom určených časoch počas jej životnosti. Vďaka tejto bermudskej vlastnosti opcií nie je mož- né oceniť tieto dlhové inštrumenty využitím štandardných simulačných techník. Avšak môžeme využiť techniku trinomických stromov pre toto ocenenie. Zachova- ním konzistencie v ocenení fundamentálnych finančných inštrumentov, je vhodné predpokladať, že úroková sadzba vychádza zo stochastického procesu v koncepcii bez-arbitrážneho ocenenia. Jednou z možností modelovania dynamiky úrokových sadzieb sú jedno-faktorové modely. Vyvinuli sme oceňovací algoritmus založený na trinomickom strome pre Hull-Whiteov model a Black-Karasinski model, ktoré majú požadované vlastnosti a parametre modelov sú kalibrované na tržné data. Klíčová slova: trinomický strom, ocenenie úrokových derivátov, Hull-Whiteov mo- del, Black-Karasinski model, okamžitá úroková sadzba 1Title: Pricing of the debt instruments with embedded options Author: Bc. Matúš Jambor Department: Department of Probability and Mathematical Statistics Supervisor: doc. RNDr. Jiří Witzany, Ph.D., University of Economics in Prague Abstract: In this thesis we focus on debt instruments with embedded options, which offer the possibility for the creditor or debtor to exercise the option in pre- determined times during its lifetime. With this the Bermudian characteristics it is not possible to price these debt instruments using standard simulation techniques. However, the technique of trinomial trees can be exploited. To preserve consistency with the pricing of fundamental financial instruments, it is suitable to assume that the interest rate follows a stochastic process in the arbitrage free framework. One of the possibilities for modeling the dynamics of interest rates are one-factor models. We have developed a pricing algorithm based on trinomial tree for Hull-White model and Black-Karasinski model which have the desired properties and model parameters are calibrated to the market data. Keywords: trinomial tree, interest rate derivatives pricing, Hull-White model, Black- Karasinski model, instantaneous interest rate 1Department of Probability and Mathematical StatisticsKatedra pravděpodobnosti a matematické statistikyMatematicko-fyzikální fakultaFaculty of Mathematics and Physic
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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