20.500.12556/RUL-150173 Metode za stiskanje grafov Methods for graph compression V magistrski nalogi smo raziskovali stiskanje usmerjenih grafov, ki se uporabljajo za modeliranje omrežij, kot so socialna omrežja, biološka omrežja, itd. Z naraščajočo velikostjo grafov se pojavljajo težave pri shranjevanju in njihovi obdelavi. Implementirali smo dve metodi, ki stiskata grafe z uporabo simetrij, ki smo jih izračunali z avtomorfizmom grafov. Metodi smo nato združili z metodami brezizgubnega stiskanja in ju primerjali z obstoječimi metodam stiskanja usmerjenih grafov. Kakovost stiskanja smo ocenili s številom bitov na povezavo. Kakovost pristopov smo ocenili na množici grafov iz različnih domen. Metodi, ki uporabljata simetrije, nista bili uspešnejši kot obstoječe, vendar smo predlagali več možnih izboljšav. In this thesis, we investigated the compression of directed graphs, which are used to model different types of networks such as social networks, biological networks, etc. As graphs grow in size, problems arise in their storage and processing. We implemented two methods that compress directed graphs using symmetries, which were calculated using graph automorphism. We then combined them with lossless compression methods and compared them with existing directed graph compression methods. The compression quality was evaluated by the number of bits per edge. We evaluated the performance of approaches on a dataset of graphs from various domains. The methods using symmetries were not more successful than the existing ones, but we proposed many possible improvements. stiskanje podatkov stiskanje grafov simetrije v grafih avtomorfizem grafov data compression graph compression graph symetries graph automrphism true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2023-09-14 12:30:00 2023-09-14 12:30:02 2023-10-13 09:49:35 0000-00-00 00:00:00 2023 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 36453 168264195 Kuhar_Yannick_-_Metode_za_kompresijo_grafov.pdf Kuhar_Yannick_-_Metode_za_kompresijo_grafov.pdf 1 59C45587B76DE9A9C20396BF391C456A 664f5fffe365fa2dd13cfb3ef3a81fc994c14bd89b8ffff812a8be7a5777f7f8 aa768405-52e9-11ee-b233-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=174735 Fakulteta za računalništvo in informatiko 0 0 0