Statistical Machine Learning Methods for Complex Data Sets

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List of Publications

Stage 1

  1. Dembinska, A., Nikolov, N. I., Stoimenova, E. (2021). Reliability properties of k-out-of-n systems with one cold standby unit. Journal of Computational and Applied Mathematics, 388, 113289. IF:4.115, Q1

  2. Zaevski, T. (2020). Discounted perpetual game put options. Chaos, Solitons &Fractals, 137:109858. IF: 3.764, Q1

  3. Zaevski, T. (2020). Perpetual game options with a multiplied penalty. Communications in Nonlinear Science and Numerical Simulation, 85:105248. IF: 4.115, Q1

  4. Zaevski, T. (2020). Laplace transforms for the first hitting time of a Brownian motion. Comptes rendus de l'Acad emie bulgare des Sciences, 73(7):934-941. IF:0.343, Q4

  5. Zaevski, T. (2021). Laplace transforms of the Brownian motion's _rst exit from a strip. Comptes rendus de l'Acad emie bulgare des Sciences, 74(5):669-676. IF:0.343, Q4

  6. Zaevski, T. (2021). A new approach for pricing discounted American options. Communications in Nonlinear Science and Numerical Simulation, 97:105752. IF: 4.26, Q1

  7. Kounchev, O., & Render, H. (2021). Error estimates for interpolation with piecewise exponential splines of order two and four. Journal of Computational and Applied Mathematics, 391, 113464.

  8. Ognyan Kounchev, Hermann Render, L1-error Bounds for Interpolation with Piecewise Exponential Splines of Order Two and Four, Comptes rendus de l'Academie bulgare des Sciences, Tome 73, No 12, 2020

  9. Kounchev, O., Render, H., & Tsachev, T. (2020). On a class of L-splines of order 4: fast algorithms for interpolation and smoothing. BIT Numerical Mathematics, 1-21.

  10. Kounchev, O., Simeonov, G., & Kuncheva, Z. (2021). Estimation of the duration of Covid-19 epidemic in a single country, with or without vaccinations. The case of Bulgaria and Germany. Comptes Rendus de L'Academie Bulgare des Sciences, 74(5).

  11. Nikolov N.I., Stoimenova E. (2021) Rank Data Clustering Based on Lee Distance. In: Georgiev I., Kostadinov H., Lilkova E. (eds) Advanced Computing in Industrial Mathematics. Studies in Computational Intelligence, vol 961. Springer, Cham. SJR: 0.19, Q4 https://doi.org/10.1007/978-3-030-71616-5_27

  12. Angelov S., Stoimenova E. (2021) Cross-Validated Sequentially Constructed Multiple Regression with Centered Predictors. In: Georgiev I., Kostadinov H., Lilkova E. (eds) Advanced Computing in Industrial Mathematics. BGSIAM 2018. Studies in Computational Intelligence, vol 961. Springer, Cham. SJR: 0.19, Q4 https://doi.org/10.1007/978-3-030-71616-5_2

  13. Kounchev, O., Simeonov, G., & Kuncheva, Z. (2021). Scenarios for the spread of COVID-19 analyzed by the TVBG_SEIR spline model. Biomath, 10(1), 17. SJR:0.25

  14. Srebrov, B., Kounchev, O., & Simeonov, G. (2020). Big Data for the Magnetic Field Variations in Solar-Terrestrial Physics and Their Wavelet Analysis. In Knowledge Discovery in Big Data from Astronomy and Earth Observation (pp. 347-370). Elsevier.

  15. Kounchev, O., Simeonov, G., & Kuncheva, Z. (2021). How Long 'Lockdowns' Are Needed to End the COVID-19 Epidemic in a Single Country, with or without Vaccinations. Electronic: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3766521 ,

  16. L. Mutafchiev. The limiting distribution of the hook length of a randomly chosen cell in a random Young diagram. To appear in: Proceedings of the Stekolv Mathematical Institute, a volume dedicated to the 75th anniversary of A. M. Zubkov and and the 70th anniversary of V. A. Vatutin.

Stage 2

  1. Kounchev, O., Render, H., & Tsachev, T. (2022, February). L-spline interpolation for differential operators of order 4 with constant coefficients. In Proceedings of the Bulgarian Academy of Sciences (Vol. 75, No. 1, pp. 11-18).IF: 0.3; квартил: Q3 Линк: https://proceedings.bas.bg/index.php/cr/article/view/2

  2. Kounchev, O., & Render, H. (2021). Error estimates for interpolation with piecewise exponential splines of order two and four. Journal of Computational and Applied Mathematics, 391, 113464. IF: 2.4; квартил: Q1 Линк: https://doi.org/10.1016/j.cam.2021.113464

  3. Kounchev, O., Render, H., & Tsachev, T. (2023). Fast algorithms for interpolation with L-splines for differential operators L of order 4 with constant coefficients. Journal of Computational and Applied Mathematics, 422, 114898. IF: 2.4; квартил: Q1 Линк: https://doi.org/10.1016/j.cam.2022.114898

  4. Kounchev, O., Boyadzhiev, G., Simeonov, G., Kunchev, M., & Kuncheva, Z. (2023, June). Implementation of Hidden Infections in the SEIR Model Analysis of the Omicron Variant Spread in Bulgaria. In Proceedings of the Bulgarian Academy of Sciences (Vol. 76, No. 6, pp. 953-961). IF: 0.3; квартил: Q3 Линк: https://doi.org/10.7546/CRABS.2023.06.16

  5. Kounchev, O., Boyadzhiev, G., Simeonov, G., Kunchev, M., & Kuncheva, Z. (2023, January). SEIR Model Analysis of the Omicron Variant Spread in Bulgaria–an Empirical Study. In Proceedings of the Bulgarian Academy of Sciences (Vol. 76, No. 1, pp. 114-119). IF: 0.3; квартил: Q3 Линк: https://doi.org/10.7546/CRABS.2023.01.12

  6. Zaevski, T. S. (2021). A new approach for pricing discounted American options. Communications in Nonlinear Science and Numerical Simulation, 97, 105752. IF: 3.9; квартил: Q1 Линк: https://doi.org/10.1016/j.cnsns.2021.105752

  7. Zaevski, Ts.. Pricing cancellable American put options on the finite time horizon. Journal of Futures Markets, 42, 7, John Wiley and Sons Inc, 2022, ISSN:0270-7314 (Print), 1096-9934 (Online), DOI:10.1002/fut.22331, 1284-1303., JCR-IF (Web of Science):1.948 Q1

  8. Zaevski, T. S. (2022). Pricing discounted American capped options. Chaos, Solitons & Fractals, 156, 111833. IF: 4.115, Q1 Линк:https://doi.org/10.1016/j.chaos.2022.111833

  9. Zaevski T. S.. Laplace Transforms of the Brownian Motion’s Fists Exit from a Strip. Comptes rendus de l’Académie bulgare des Sciences, 74, 5, „Prof. Marin Drinov“ Publishing House of Bulgarian Academy of Sciences, 2021, ISSN:1310–1331 (Print), 2367–5535 (Online), DOI:10.7546/CRABS.2021.05.0, 669-676, JCR-IF (Web of Science):0.326 Q3

  10. Zaevski, T., & Kyurkchiev, N. (2022, October). Some notes on the four-parameter Kies distribution. In Proceedings of the Bulgarian Academy of Sciences (Vol. 75, No. 10, pp. 1403-1409). IF: 0.3; квартил: Q3 Линк: https://doi.org/10.7546/CRABS.2022.10.01

  11. Zaevski, T., Kyurkchiev, N.. On some composite Kies families: distributional properties and saturation in Hausdorff sense. Modern Stochastics: Theory and Applications, 10, 3, VTeX, 2023, ISSN:2351-6054, DOI:10.15559/23-VMSTA227, 287-312. SJR (Scopus):0.284, JCR-IF (Web of Science):0.378 Q3 (Scopus)

  12. Zaemdzhikova, G., & Zaevski, T. (2023, May). The Effect of Temperature on Flight Initiation of Pine Processionary Moth in Bulgaria. In Proceedings of the Bulgarian Academy of Sciences (Vol. 76, No. 5, pp. 722-734). IF: 0.3; квартил: Q3 Линк: https://doi.org/10.7546/CRABS.2023.05.08

  13. Zaevski, Ts.. American strangle options with arbitrary strikes. Journal of Futures Markets, 43, Wiley, 2023, ISSN:1096-9934, DOI:https://doi.org/10.1002/fut.22419, 880-903. SJR (Scopus):0.724, JCR-IF (Web of Science):1.9 Q1

  14. Zaevski, T. S., & Nedeltchev, D. C. (2023). From BASEL III to BASEL IV and beyond: Expected shortfall and expectile risk measures. International Review of Financial Analysis, 87, 102645. SJR: 1.88; квартил: Q1 Линк: https://doi.org/10.1016/j.irfa.2023.102645

  15. Mutafchiev, L. R. (2022). The Limiting Distribution of the Hook Length of a Randomly Chosen Cell in a Random Young Diagram. Proceedings of the Steklov Institute of Mathematics, 316(1), 268-279. IF 0.5

  16. Mutafchiev, L. Large parts of random plane partitions: a Poisson limit theorems. Australasian Journal of Combinatorics, 2022, 82(3), pp. 297–316, SJR 0.62, Q2 https://doi.org/10.1134/S0081543822010199

  17. Kyurkchiev, N., & Zaevski, T. (2023). On a hypothetical oscillator: investigations in the light of the Melnikov’s approach, some simulations. International Journal of Differential Equations and Applications, 22(1), 67-79. ). SJR: 0.14; квартил: Q4 Линк: https://ijpam.eu/en/index.php/ijdea/article/view/6036/307

  18. . Tsachev, T., & Vassileva, I. (2023). Fiscal policy options for reducing informality in an economy with fiscal rules. Serdica Mathematical Journal, 49(1–3), 205-230.

  19. Kounchev, O., & Render, H. (2022). A Fourier series approach to cubature formulas for integrals on the disk witha non-smooth weight function. Research Square,Dublin

  20. Kounchev, O., Render, H., & Tsachev, T. (2022). Error estimates for harmonic and biharmonic interpolation splines with annular geometry. arXiv preprint arXiv:2201.05521.

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