Data Structures, Cryptology and Information Theory Data structures (Computer science) 33 Computer science 20 Computer Science 19 Computer security 9 Systems and Data Security 9 Computers 8 Mathematics 7 Information Systems and Communication Service 6 Engineering 5 Number Theory 5 Number theory 5 Information Systems Applications (incl. Internet) 4 Mathematics of Computing 4 Computer Communication Networks 3 Computer Systems Organization and Communication Networks 3 Computer networks 3 Computer organization 3 Data Mining and Knowledge Discovery 3 Data mining 3 Information and Communication, Circuits 3 Information theory 3 Physics 3 Quantum Computing 3 Quantum Information Technology, Spintronics 3 Quantum computers 3 Spintronics 3 Theory of Computation 3 Communications Engineering, Networks 2 Computational Intelligence 2