INVITED-Cross-Layer Approximations for Neuromorphic Computing: From Devices to Circuits and Systems. - Panda, Priyadarshini; Sengupta, Abhronil; Sarwar, Syed Shakib; Srinivasan, Gopalakrishnan; Venkataramani, Swagath; Raghunathan, Anand; Roy, Kaushik (DAC: Annual ACM/IEEE Design Automation Conference, 2016)