Mathematics 58 R (Computer program language) 54 Data mining 43 Nanotechnology 43 Image processing 42 Biotechnology 41 Computer security 33 Data processing 33 Mathematical statistics 33 Nanostructured materials 33 Microbiology 31 Food 30 Mathematical models 30 Big data 25 Biochemistry 25 Digital techniques 25 Geographic information systems 24 Computer networks 23 Toxicology 23 Engineering 22 Homescience 22 Nanostructures 22 Polymers 21 Wireless communication systems 21 Cloud computing 20 Computer graphics 20 Computer science 20 Pharmacology and Toxicology 20 Statistics 20 methods 20