20.500.12556/RUL-85514 Analiza infrardečih spektrov z globokimi nevronskimi mrežami Analysis of infrared spectra using deep neural networks Z opazovanjem absorpcijskega spektra, ki ga dobivamo z obsevanjem določenega vzorca, na primer tkiva, z infrardečo svetlobo, lahko dobimo informacijo o kemijski sestavi vzorca. Pri analizi spektrov pogosto uporabljamo klasifikacijske metode, s katerimi lahko določamo sestavo celotnega vzorca ali njegovih delov. Eden od primernih algoritmov za ta namen so umetne nevronske mreže. V diplomskem delu smo ugotavljali, kako uspešne so umetne nevronske mreže za klasifikacijo infrardečih spektrov. Preizkusili smo jih na več naborih podatkov ter jih primerjali z metodo podpornih vektorjev in multinomsko logistično regresijo. Preverjali smo tudi uspešnost konvolucijskih nevronskih mrež. Umetne nevronske mreže so dosegle primerno točnost, vendar niso veliko boljše od metode podpornih vektorjev, ki je, po drugi strani, bistveno hitrejša. Absorption spectra obtained from the sample irradiated by infrared radiation represent a very useful method for observing the chemical composition of different kinds of samples, from cell tissue to various materials. For spectrum analysis, we often use classification algorithms. A suitable algorithm for this task is an artificial neural network. In the diploma thesis, we explored the usefulness of artificial neural networks for classification of infrared spectra. We measured classification accuracies on different data sets and compared them to the results of support vector machines and multinomial logistic regression. We also examined the performance of convolutional neural networks. The results achieved by the artificial neural networks were promising. However, they were not significantly better than those of the support vector machines. On the other hand, the performance of the latter was considerably faster. umetne nevronske mreže globoko učenje infrardeči spektri artificial neural networks deep learning infrared spectra true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2016-09-15 17:35:01 2016-09-15 17:35:02 2022-08-09 08:57:39 0000-00-00 00:00:00 2016 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 18347 Avbelj_Tina_-_Analiza_infrardecih_spektrov_z_globokimi_nevronskimi_mrezami.pdf Avbelj_Tina_-_Analiza_infrardecih_spektrov_z_globokimi_nevronskimi_mrezami.pdf 1 266244D7129C35678449C6989FF1E95C 2e9dafe80a76ba969e13148c445c7184909234d0702e53e6830ad68b2169edb6 fcb08d33-a1b0-11eb-a523-00155dcfd717 20.500.12556/rul/8d7c8fb9-00d9-4357-9b9b-c08f1c4447b7 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=88632 Fakulteta za računalništvo in informatiko 0 0 0