CapoCaccia 2015 May 8 th Memristive nanodevices synapses: let’s build an intelligent memory! Workgroup Members: Christopher Bennett, Damir Vodenicarevic, Sergio Solinas, Qian Liu, Fabien Alibart Workgroup Leader: Selina La Barbera CapoCaccia WorkShop 2015 – MEM WorkGroup CapoCaccia WorkShop 2015 – MEM WorkGroup

Real-time forming of dendritic filaments From Experimetal results Noisy Inputs Spikes Patterns Output Spikes Patterns & Modeling results validation STP LTP STP  LTP transition CapoCaccia 2015 May 8 th To Spike-base memristive dynamic systems for Features ExtractionCC2015 MEM Workgroup B) architecture approachA) architecture approach EPSP response by a train of presynaptic APs 1.Convoluted signature 2.Simple signature Reservoir Computing « Random recurrent network » 1.MNIST Digits 2.Audio Sensors data ‘musical notes’ by Silicon Cochlea 3.Visual Sensors data by DVS Objectives CapoCaccia WorkShop 2015 – MEM WorkGroup CapoCaccia WorkShop 2015 – MEM WorkGroup

CapoCaccia 2015 May 8 th MEM Workgroup RESULTS MNIST digits ~ 60% MEM Workgroup RESULTS MNIST digits ~ 60% … MLP 1 hidden layer … A) Random Reservoir ApproachB) Xbar Reservoir Approach Simple signature Convoluted signature Training step Testing step [ex. 1] [ex. 2] [ex. 3] Set weights … … … Result Vector 1: 97% 2:2% … 9:8% 0:15% Conditioning DEMO