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Statistical Analysis of Risk Indicators of a Company
Procházka, Martin ; Procházková, Kateřina (referee) ; Karpíšek, Zdeněk (advisor)
This diploma thesis aims at analyzing accounting and financial indicators using time series, regression analysis and interval regression analysis of selected company VIDEN plus, a.s. The thesis analyzes the development trends of individual indicators, which are able to reveal the state of the company. Based on the data obtained, the issue of company risks arising from the analyzes and their correction is then addressed.
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Interval linear and nonlinear systems
Horáček, Jaroslav ; Hladík, Milan (advisor) ; Garloff, Jürgen (referee) ; Ratschan, Stefan (referee)
First, basic aspects of interval analysis, roles of intervals and their applications are addressed. Then, various classes of interval matrices are described and their relations are depicted. This material forms a prelude to the unifying theme of the rest of the work - solving interval linear systems. Several methods for enclosing the solution set of square and overdetermined interval linear systems are covered and compared. For square systems the new shaving method is introduced, for overdetermined systems the new subsquares approach is introduced. Detecting unsolvability and solvability of such systems is discussed and several polynomial conditions are compared. Two strongest condi- tions are proved to be equivalent under certain assumption. Solving of interval linear systems is used to approach other problems in the rest of the work. Computing enclosures of determinants of interval matrices is addressed. NP- hardness of both relative and absolute approximation is proved. New method based on solving square interval linear systems and Cramer's rule is designed. Various classes of matrices with polynomially computable bounds on determinant are characterized. Solving of interval linear systems is also used to compute the least squares linear and nonlinear interval regression. It is then applied to real...
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Statistical Analysis of Risk Indicators of a Company
Procházka, Martin ; Procházková, Kateřina (referee) ; Karpíšek, Zdeněk (advisor)
This diploma thesis aims at analyzing accounting and financial indicators using time series, regression analysis and interval regression analysis of selected company VIDEN plus, a.s. The thesis analyzes the development trends of individual indicators, which are able to reveal the state of the company. Based on the data obtained, the issue of company risks arising from the analyzes and their correction is then addressed.
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