| Title: | Organization in finance prepared by stohastic differential equations with additive and nonlinear models and continuous optimization |
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| Authors: | ID Taylan, Pakize (Author)
ID Weber, Gerhard-Wilhelm (Author) |
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| Files: |  Organizacija_2008_Taylan,_Weber_Organization_in_Finance_Prepared_by_Stochastic_Differential_Equations_with_Additive_and_Nonlinear_Models.pdf (364,34 KB)
MD5: FF162421F47C609BF94DA4CA4B341318
PID: 20.500.12556/dkum/0e6dae32-c9fd-4269-91b8-f77c62bf0bd4
 http://www.degruyter.com/view/j/orga.2008.41.issue-5/v10051-008-0020-8/v10051-008-0020-8.xml
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FOV - Faculty of Organizational Sciences in Kranj
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| Abstract: | A central element in organization of financal means by a person, a company or societal group consists in the constitution, analysis and optimization of portfolios. This requests the time-depending modeling of processes. Likewise many processes in nature, technology and economy, financial processes suffer from stochastic fluctuations. Therefore, we consider stochastic differential equations (Kloeden, Platen and Schurz, 1994) since in reality, especially, in the financial sector, many processes are affected with noise. As a drawback, these equations are hard to represent by a computer and hard to resolve. In our paper, we express them in simplified manner of approximation by both a discretization and additive models based on splines. Our parameter estimation refers to the linearly involved spline coefficients as prepared in (Taylan and Weber, 2007) and the partially nonlinearly involved probabilistic parameters. We construct a penalized residual sum of square for this model and face occuring nonlinearities by Gauss-Newton's and Levenberg-Marquardt's method on determining the iteration step. We also investigate when the related minimization program can be written as a Tikhonov regularization problem (sometimes called ridge regression), and we treat it using continuous optimization techniques. In particular, we prepare access to the elegant framework of conic quadratic programming. These convex optimation problems are very well-structured, herewith resembling linear programs and, hence, permitting the use of interior point methods (Nesterov and Nemirovskii, 1993). |
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| Keywords: | stochastic differential equations, regression, statistical learning, parameter estimation, splines, Gauss-Newton method, Levenberg-Marquardt's method, smoothing, stability, penalty methods, Tikhonov regularization, continuous optimization, conic quadratic programming |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Year of publishing: | 2008 |
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| Number of pages: | str. 185-193 |
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| Numbering: | Letn. 41, št. 5 |
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| PID: | 20.500.12556/DKUM-69347  |
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| ISSN: | 1318-5454 |
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| UDC: | 005.591.1:519.863 |
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| ISSN on article: | 1318-5454 |
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| COBISS.SI-ID: | 244516864 |
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| DOI: | 10.2478/v10051-008-0020-8 |
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| NUK URN: | URN:SI:UM:DK:4CF9QOSN |
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| Publication date in DKUM: | 10.01.2018 |
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| Views: | 1436 |
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| Downloads: | 151 |
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| Metadata: |    |
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| Categories: | Misc.
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