<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Probabilistic photometric redshift estimation in massive digital sky surveys via machine learning"^^ . "The problem of photometric redshift estimation is a major subject in astronomy, since the need of estimating distances for a huge number of sources, as required by the data deluge of the recent years. The ability to estimate redshifts through spectroscopy does not scale with this avalanche of data. Photometric redshifts provide the required redshift estimates at the cost of some precision. The success of several forthcoming missions is highly dependent on the availability of photometric redshifts.\r\nThe purpose of this thesis is to provide innovative methods for photometric redshift estimation. Two models are proposed. The first is fully-automatized, based on the combination of a convolutional neural network with a mixture density network, to predict probabilistic multimodal redshifts directly from images. The second model is features-based, performing a massive combination of photometric parameters to apply a forward selection in a huge feature space. The proposed models perform very efficiently compared to some of the most common models used in the literature. An important part of the work is dedicated to the correct estimation of the errors and prediction quality.\r\nThe proposed models are very general and can be applied to different topics in astronomy and beyond."^^ . "2019" . . . . . . . "Antonio"^^ . "D'Isanto"^^ . "Antonio D'Isanto"^^ . . . . . . "Probabilistic photometric redshift estimation in massive digital sky surveys via machine learning (PDF)"^^ . . . "thesis_disanto.pdf"^^ . . . "Probabilistic photometric redshift estimation in massive digital sky surveys via machine learning (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Probabilistic photometric redshift estimation in massive digital sky surveys via machine learning (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Probabilistic photometric redshift estimation in massive digital sky surveys via machine learning (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Probabilistic photometric redshift estimation in massive digital sky surveys via machine learning (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Probabilistic photometric redshift estimation in massive digital sky surveys via machine learning (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #26000 \n\nProbabilistic photometric redshift estimation in massive digital sky surveys via machine learning\n\n" . "text/html" . . . "004 Informatik"@de . "004 Data processing Computer science"@en . . . "520 Astronomie"@de . "520 Astronomy and allied sciences"@en . . . "530 Physik"@de . "530 Physics"@en . .