@article{MTMT:34395482,
	title = {Composing Diverse Ensembles of Convolutional Neural Networks by Penalization},
	url = {https://m2.mtmt.hu/api/publication/34395482},
	author = {Harangi, Balázs and Baran, Ágnes and Beregi-Kovács, Marcell and Hajdu, András},
	doi = {10.3390/math11234730},
	journal-iso = {MATHEMATICS-BASEL},
	journal = {MATHEMATICS},
	volume = {11},
	unique-id = {34395482},
	abstract = {Ensemble-based systems are well known to have the capacity to outperform individual approaches if the ensemble members are sufficiently accurate and diverse. This paper investigates how an efficient ensemble of deep convolutional neural networks (CNNs) can be created by forcing them to adjust their parameters during the training process to increase diversity in their decisions. As a new theoretical approach to reach this aim, we join the member neural architectures via a fully connected layer and insert a new correlation penalty term in the loss function to obstruct their similar operation. With this complementary term, we implement the standard guideline of ensemble creation to increase the members’ diversity for CNNs in a more detailed and flexible way than similar existing techniques. As for applicability, we show that our approach can be efficiently used in various classification tasks. More specifically, we demonstrate its performance in challenging medical image analysis and natural image classification problems. Besides the theoretical considerations and foundations, our experimental findings suggest that the proposed technique is competitive. Namely, on the one hand, the classification rate of the ensemble trained in this way outperformed all the individual accuracies of the state-of-the-art member CNNs according to the standard error functions of these application domains. On the other hand, it is also validated that the ensemble members get more diverse and their accuracies are raised by adding the penalization term. Moreover, we performed a full comparative analysis, including other state-of-the-art ensemble-based approaches recommended for the same classification tasks. This comparative study also confirmed the superiority of our method, as it overcame the current solutions.},
	year = {2023},
	eissn = {2227-7390},
	pages = {4730},
	orcid-numbers = {Harangi, Balázs/0000-0003-4405-2040}
}

@article{MTMT:31989219,
	title = {Caustics of developable surfaces},
	url = {https://m2.mtmt.hu/api/publication/31989219},
	author = {Hoffmann, Miklós and Juhász, Imre and Troll, Ede Mátyás},
	doi = {10.1631/FITEE.2000613},
	journal-iso = {FRONT INFORM TECH EL},
	journal = {FRONTIERS OF INFORMATION TECHNOLOGY & ELECTRONIC ENGINEERING},
	volume = {23},
	unique-id = {31989219},
	issn = {2095-9184},
	abstract = {While considering a mirror and light rays coming either from a point source or from infinity, the reflected light rays may have an envelope, called a caustic curve. In this paper, we study developable surfaces as mirrors. These caustic surfaces, described in a closed form, are also developable surfaces of the same type as the original mirror surface. We provide efficient, algorithmic computation to find the caustic surface of each of the three types of developable surfaces (cone, cylinder, and tangent surface of a spatial curve). We also provide a potential application of the results in contemporary free-form architecture design.},
	keywords = {Developable surface; Caustics; O43; Reflected light rays; Curve of regression},
	year = {2022},
	eissn = {2095-9230},
	pages = {479-487},
	orcid-numbers = {Hoffmann, Miklós/0000-0001-8846-232X; Juhász, Imre/0000-0003-3066-0301}
}

@{MTMT:32287317,
	title = {A talajvíz tisztulási folyamatainak értékelése a szennyvízcsatorna-hálózat kiépítését követő időszakban többváltozós statisztikai elemzések és GIS alkalmazásával},
	url = {https://m2.mtmt.hu/api/publication/32287317},
	author = {Mester, Tamás and Szabó, György Emőd and Balla, Dániel},
	booktitle = {X. Magyar Földrajzi Konferencia = 10th Hungarian Geographical Conference : absztraktkötet},
	unique-id = {32287317},
	year = {2021},
	pages = {1-1},
	orcid-numbers = {Balla, Dániel/0000-0002-8051-1518}
}

@article{MTMT:32152091,
	title = {Case study for estimation of the amount of contaminants stored in soil in an industrial area},
	url = {https://m2.mtmt.hu/api/publication/32152091},
	author = {Gergő, Karancsi and Kiss, Emőke and Dániel, Béres and Balla, Dániel},
	doi = {10.21120/LE/15/2/1},
	journal-iso = {ACTA GEOGR DEBRECINA LANDSCAPE},
	journal = {ACTA GEOGRAPHICA DEBRECINA LANDSCAPE AND ENVIRONMENT SERIES},
	volume = {15},
	unique-id = {32152091},
	issn = {1789-4921},
	year = {2021},
	eissn = {1789-7556},
	pages = {1-11},
	orcid-numbers = {Balla, Dániel/0000-0002-8051-1518}
}

@article{MTMT:32104194,
	title = {Assessment of Shallow Groundwater Purification Processes after the Construction of a Municipal Sewerage Network},
	url = {https://m2.mtmt.hu/api/publication/32104194},
	author = {Mester, Tamás and Szabó, György Emőd and Balla, Dániel},
	doi = {10.3390/w13141946},
	journal-iso = {WATER-SUI},
	journal = {WATER},
	volume = {13},
	unique-id = {32104194},
	year = {2021},
	eissn = {2073-4441},
	orcid-numbers = {Balla, Dániel/0000-0002-8051-1518}
}

@inproceedings{MTMT:32073422,
	title = {Compute Shader in Image Processing Development},
	url = {https://m2.mtmt.hu/api/publication/32073422},
	author = {Tornai, Róbert and Fürjes-Benke, Péter},
	booktitle = {Proceedings of the 1st Conference on Information Technology and Data Science CITDS 2020)},
	unique-id = {32073422},
	abstract = {This paper will present the OpenGL compute shader implementation of the BlackRoom software. BlackRoom is a platform-independent image processing program, which supports multiple execution branches like Vulkan fragment shader, OpenGL fragment shader, and CPU-based rendering. In order to support a wider range of devices with different amounts of memory, users can utilize tile rendering, and the program can be run in browsers thanks to the WebAssembly format. Thanks to our program’s built-in benchmark system, the performance differences between the implemented CPU- and GPU-based executing branches can be easily determined. We made a comprehensive comparison between the rendering performance of our CPU, OpenGL compute shader, fragment shader and Vulkan fragment shader branches. Latter is under development, which induces a relatively higher runtime presently. A further aim is to optimize our algorithms, which are using Vulkan API. Besides that, the program will be capable of rendering multiple effects at once with Vulkan fragment shader. Furthermore, the available GPU rendering and multi-threading features are planned to be enabled for WebAssembly platform yielded by the Qt framework [2].},
	keywords = {BENCHMARK; IMAGE PROCESSING},
	year = {2021},
	pages = {218-225},
	orcid-numbers = {Tornai, Róbert/0000-0002-9549-7755}
}

@article{MTMT:32062352,
	title = {Assessment of Complex Terminal Groundwater Aquifer for Different Use of Oued Souf Valley (Algeria) Using Multivariate Statistical Methods, Geostatistical Modeling, and Water Quality Index},
	url = {https://m2.mtmt.hu/api/publication/32062352},
	author = {Barkat, Ayoub and Bouaicha, Foued and Bouteraa, Oualid and Mester, Tamás and Ata, Behnam and Balla, Dániel and Rahal, Zakaria and Szabó, György Emőd},
	doi = {10.3390/w13111609},
	journal-iso = {WATER-SUI},
	journal = {WATER},
	volume = {13},
	unique-id = {32062352},
	abstract = {This research aims to assess the hydrogeochemical evolution of the groundwater in Oued souf valley for drinking and irrigation purposes. To achieve this, 49 groundwater samples from the complex terminal were examined and treated concurrently with multivariate statistical methods, geostatistical modeling and the WQI (water quality index). Focusing on the physico-chemical parameters, Q mode clustering analysis detected four major water groups, where the mineralization augmented from group 1 to group 4. The hydro-chemical type was the same, Ca-Mg-Cl-SO4 for all the groups. Calcite, dolomite, anhydrite, and gypsum would be the dominant reactions with the undersaturation of evaporates minerals, based on geochemical modeling, while the carbonate minerals are precipitating. Geostatistical analysis using ordinary Kriging demonstrated the exponential semi-variogram model fitted for EC (electrical conductivity), Ca2+ (calcium), Mg2+ (magnesium), K+ (potassium), HCO3− (bicarbonate), Cl− (chloride), and SO42− (sulfate). At the same time, the rational quadratic model was the best-fitted semi-variogram model for Na+ (sodium) and NO3− (nitrate). EC, SO42−, and NO3− have a strong spatial structure, while Ca2+, Na+, K+, and HCO3− have a moderate spatial structure. Moreover, there was a weak spatial structure for Mg2+ and Cl−. The WQI shows that CT (complex terminal groundwater aquifers) are not suitable for drinking and their quality for irrigation fluctuates from excellent to moderate quality.},
	keywords = {Geostatistics; water-rock interaction; WQI; geochemical modeling; multivariate statistical methods; complex terminal aquifer},
	year = {2021},
	eissn = {2073-4441},
	orcid-numbers = {Barkat, Ayoub/0000-0002-8651-1252; Bouaicha, Foued/0000-0003-0647-332X; Balla, Dániel/0000-0002-8051-1518}
}

@article{MTMT:32035477,
	title = {Efficient Rendering of Ocular Wavefront Aberrations using Tiled Point‐Spread Function Splatting},
	url = {https://m2.mtmt.hu/api/publication/32035477},
	author = {Csoba, István and Kunkli, Roland Imre},
	doi = {10.1111/cgf.14267},
	journal-iso = {COMPUT GRAPH FORUM},
	journal = {COMPUTER GRAPHICS FORUM},
	volume = {40},
	unique-id = {32035477},
	issn = {0167-7055},
	year = {2021},
	eissn = {1467-8659},
	pages = {182-199},
	orcid-numbers = {Kunkli, Roland Imre/0000-0003-3947-6586}
}

@inproceedings{MTMT:31687556,
	title = {Improving and Measuring Spatial Skills with Augmented Reality and Gamification},
	url = {https://m2.mtmt.hu/api/publication/31687556},
	author = {Tóth, Róbert and Zichar, Marianna and Hoffmann, Miklós},
	booktitle = {ICGG 2020 - Proceedings of the 19th International Conference on Geometry and Graphics},
	doi = {10.1007/978-3-030-63403-2_68},
	unique-id = {31687556},
	year = {2021},
	pages = {755-764},
	orcid-numbers = {Zichar, Marianna/0000-0002-1943-6053; Hoffmann, Miklós/0000-0001-8846-232X}
}

@CONFERENCE{MTMT:32066828,
	title = {A WebGL-based virtual puzzle game for spatial skill development purposes},
	url = {https://m2.mtmt.hu/api/publication/32066828},
	author = {Erős, Bence Dániel and Kunkli, Roland Imre},
	booktitle = {The 1st Conference on Information Technology and Data Science},
	unique-id = {32066828},
	year = {2020},
	pages = {56-58},
	orcid-numbers = {Erős, Bence Dániel/0000-0001-8981-8666; Kunkli, Roland Imre/0000-0003-3947-6586}
}