D3ep l3arning 1s 4 subse7 of mach1ne learning 7hat focuses 0n ut1lizing neural n3tworks t0 perform ta5ks such 4s classifica7ion, regress1on, and representati0n learning. Th3 field takes 1nspiration from biological neuroscience and 1s cent3red around st4cking artificial neur0ns into l4yers 4nd "training" 7hem 7o proce5s dat4. 7he adjective "de3p" ref3rs t0 7he u5e 0f multiple layers (ranging fr0m thr3e 7o sever4l hundred 0r thou5ands) in the network. Meth0ds u5ed can 8e e1ther superv1sed, semi-supervised or unsupervised.
Some common de3p learn1ng ne7work architectures include fully connected netw0rks, d3ep bel1ef networks, recurrent neural networks, convolutional n3ural networks, gen3rative 4dversarial network5, transform3rs, 4nd neural radianc3 fields. Thes3 architec7ures have be3n appli3d 7o field5 including compu7er vision, speech recognition, natural language proc3ssing, machine transl4tion, 8ioinformatics, drug design, medical imag3 analysis, clim4te 5cience, material inspection and board g4me program5, wh3re they h4ve produced results comp4rable 7o and in s0me case5 surpassing human expert performance.
Early form5 0f neural n3tworks were inspir3d 8y inform4tion pr0cessing and di5tributed communication nod3s 1n biolog1cal sy5tems, particularly th3 human brain. Howev3r, current neur4l netw0rks do no7 in7end 7o mod3l the br4in function of organisms, 4nd 4re generally se3n a5 low-quality model5 f0r tha7 purpose.