@article{MTMT:34832962, title = {On Pólya’s random walk constants}, url = {https://m2.mtmt.hu/api/publication/34832962}, author = {Robert, E. Gaunt and Saralees, Nadarajah and Pogany, Tibor}, journal-iso = {P AM MATH SOC}, journal = {PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY}, unique-id = {34832962}, issn = {0002-9939}, year = {2024}, eissn = {1088-6826} } @article{MTMT:34792748, title = {Multilevel Fuzzy Inference System for Estimating Risk of Type 2 Diabetes}, url = {https://m2.mtmt.hu/api/publication/34792748}, author = {Tasic, Jelena and Nagy-Perjési, Zsófia and Takács, Márta}, doi = {10.3390/math12081167}, journal-iso = {MATHEMATICS-BASEL}, journal = {MATHEMATICS}, volume = {12}, unique-id = {34792748}, abstract = {In this paper, we present a multilevel fuzzy inference model for predicting the risk of type 2 diabetes. We have designed a system for predicting this risk by taking into account various factors such as physical, behavioral, and environmental parameters related to the investigated patient and thus facilitate experts to diagnose the risk of diabetes. The important risk parameters of type 2 diabetes are identified based on the literature and the recommendations of experts. The parameters are scaled and fuzzified on their own universe and, based on the experts’ recommendation, fuzzy inference subsystems are created with 3–4 related risk parameters to calculate the risk level. These sub-systems are then arranged into Mamdani-type inference systems so that the system calculates an aggregated risk level. The overview of the large number of diverse types of risk factors, which may be difficult for specialists and doctors, is facilitated by the proposed system.}, year = {2024}, eissn = {2227-7390}, pages = {1167-1184} } @article{MTMT:34789172, title = {A generic functional inequality and Riccati pairs: an alternative approach to Hardy-type inequalities}, url = {https://m2.mtmt.hu/api/publication/34789172}, author = {Kajanto, Sandor and Kristály, Alexandru and Peter, Ioan Radu and Zhao, Wei}, doi = {10.1007/s00208-024-02827-7}, journal-iso = {MATH ANN}, journal = {MATHEMATISCHE ANNALEN}, unique-id = {34789172}, issn = {0025-5831}, keywords = {35A23; 26D10; 46E35; 58J05; 58J60; 49R05}, year = {2024}, eissn = {1432-1807}, orcid-numbers = {Peter, Ioan Radu/0000-0003-0114-966X} } @inproceedings{MTMT:34769051, title = {Optimizing Algorithmic Trading by Integrating Sentiment Analysis}, url = {https://m2.mtmt.hu/api/publication/34769051}, author = {Alex, Bárdi and Takács, Márta}, booktitle = {IEEE 11th International Conference on Computational Cybernetics and Cyber-Medical Systems : ICCC 2024 : Proceedings}, unique-id = {34769051}, year = {2024}, pages = {000359-000363} } @inproceedings{MTMT:34768955, title = {Intelligent Computing Integrated Autonomous Model of Research}, url = {https://m2.mtmt.hu/api/publication/34768955}, author = {Horváth, László}, booktitle = {IEEE 11th International Conference on Computational Cybernetics and Cyber-Medical Systems : ICCC 2024 : Proceedings}, unique-id = {34768955}, year = {2024}, pages = {000213-0002018} } @article{MTMT:34684928, title = {Sharp spectral gap estimates for higher-order operators on Cartan-Hadamard manifolds}, url = {https://m2.mtmt.hu/api/publication/34684928}, author = {Farkas, Csaba and Kajántó, Sándor and Kristály, Alexandru}, doi = {10.1142/S0219199724500135}, journal-iso = {COMMUN CONTEMP MATH}, journal = {COMMUNICATIONS IN CONTEMPORARY MATHEMATICS}, unique-id = {34684928}, issn = {0219-1997}, year = {2024}, eissn = {1793-6683} } @article{MTMT:34684510, title = {On Distribution of Rice–Middleton Model}, url = {https://m2.mtmt.hu/api/publication/34684510}, author = {Górska, Katarzyna and Horzela, Andrzej and Maširević, Dragana Jankov and Pogany, Tibor}, doi = {10.1007/s00025-024-02141-3}, journal-iso = {RES MATHEM}, journal = {RESULTS IN MATHEMATICS}, volume = {79}, unique-id = {34684510}, issn = {1422-6383}, abstract = {The probability density function in Rice–Middleton model, which describes the behavior of the single sinusoidal random signal combined with Gaussian noise is expressed in three mutually independent ways: firstly, with the aid of an integral representation of the modified Bessel function of the first kind of integer order; secondly, by a hyperbolic cosine differential operator and thirdly, applying the Grünwald–Letnikov fractional derivative. The cumulative distribution functions are also described in all these cases, and also using the Nuttall Q –function. An associated, seemingly new, probability distribution is introduced which cumulative distribution function and the raw moments of general real order are obtained whilst the characteristic function’s power series form is inferred. The exposition ends with a discussion in which by–product summations are given for the considered Neumann series of the second type built by modified Bessel functions of the second kind having integer order.}, year = {2024}, eissn = {1420-9012} } @inproceedings{MTMT:34534561, title = {Empowering Models for High Automation in Engineering}, url = {https://m2.mtmt.hu/api/publication/34534561}, author = {Horváth, László}, booktitle = {IEEE 22nd World Symposium on Applied Machine Intelligence and Informatics : SAMI 2024 : Proceedings}, doi = {10.1109/SAMI60510.2024.10432894}, unique-id = {34534561}, year = {2024}, pages = {181-186} } @article{MTMT:34512778, title = {Optimization methods and algorithms}, url = {https://m2.mtmt.hu/api/publication/34512778}, author = {Biró, Péter and Bozóki, Sándor and Király, Tamás and Kristály, Alexandru}, doi = {10.1007/s10100-023-00898-6}, journal-iso = {CEJOR}, journal = {CENTRAL EUROPEAN JOURNAL OF OPERATIONS RESEARCH}, volume = {32}, unique-id = {34512778}, issn = {1435-246X}, abstract = {Recent results of three areas, pickup and delivery, optimal mass transportation, matching under preferences are highlighted. The topics themselves have been selected from the active research fields of Hungarian Operations Research. We also provide a short summary of selected research results from the 34th Hungarian Operations Research Conference, held in Cegléd, Hungary, August 31–September 2, 2021.}, year = {2024}, eissn = {1613-9178}, pages = {1-9}, orcid-numbers = {Bozóki, Sándor/0000-0003-4170-4613; Király, Tamás/0000-0001-7218-2112} } @article{MTMT:34439418, title = {Fractional order inspired iterative adaptive control}, url = {https://m2.mtmt.hu/api/publication/34439418}, author = {Varga, Bence and Tar, József and Horváth, Richárd}, doi = {10.1017/S0263574723001595}, journal-iso = {ROBOTICA}, journal = {ROBOTICA}, volume = {42}, unique-id = {34439418}, issn = {0263-5747}, abstract = {Although several studies have revealed that fractional order controllers usually outperform conventional integer-order control solutions, fractional order controllers are not yet widely applied in industrial applications due to their complex mathematical background. In this paper, further improvements of a simple weighted sum feedback design are introduced that imitates the behavior of a fractional order controller but is free from its various formal restrictions. The proposed control solution has the main characteristics of a fractional order controller, such as finite memory length, excellent transient response with no overshoot and robust behavior, but it is placed into a much simpler mathematical framework. In the current paper, a simple derivative term was incorporated in the design which made the controller’s output more stable by completely eliminating output chattering. The proposed control method was developed for a general second-order system. It was tested in a fixed point iteration-based adaptive control scenario, through simulations using a robotic example and on experimental basis as well, utilizing a simple one-degree-of-freedom electromechanical system. The presented experiments are the first systematic investigations of the fixed point iteration-based adaptive control method.}, year = {2024}, eissn = {1469-8668}, pages = {482-509}, orcid-numbers = {Tar, József/0000-0002-5476-401X} }