(強いAI)技術的特異点/(世界加速) 23at FUTURE(強いAI)技術的特異点/(世界加速) 23 - 暇つぶし2ch■コピペモード□スレを通常表示□オプションモード□このｽﾚｯﾄﾞのURL■項目テキスト794:YAMAGUTIseisei 20/08/28 00:34:57.19 STE/0glun Memristors The memristive synapse set-up consisted of an array of memristive devices positioned inside an ArC memristor characterisation and testing instrument33 (Supplementary Fig.5. http:www.arc-instruments.co.uk). The instrument is controlled by a PC, which handles all the communications over UDP; all through a python-based user interface. The software is configured to react to UDP packets carrying information about the firing of either artificial or biological neurons (who fired when). Once a packet is received, the ID of the neuron that emitted it and the time of spiking are both retrieved from the packet payload and the neural connectivity matrix is consulted in order to determine which neurons are pre- and which are post-synaptic to the firing cell. Then, if the plasticity conditions are met, the ArC instrument applies programming pulses that cause the memristive synapses to change their resistive states. Importantly, the set-up can control whether LTP- or LTD-type plasticity is to be applied in each case, but once the pulses have been applied it is the device responses that determine the magnitude of the plasticity. Notably, resistivity transitions of the device are non-volatile, they hold over at least hours27 as also exemplified in our prototype experiment and are therefore fully compatible with typical LTP and LTD time scales of natural synapses. The system is sustained by a specific methodology for handling timing within the overall network (Zurich, Southampton, Padova). The set-up in Southampton being the node that links Zurich and Padova together, controls the overall handling of time. -- Once a packet is received, the ID of the neuron that emitted it and the time of spiking are retrieved from the neural connectivity matrix (held at the Southampton set-up) is consulted the ID of the neuron that emitted it and the time of spiking are both retrieved from the packet payload and the neural connectivity matrix (held at the Southampton set-up) is consulted 次ページ最新レス表示レスジャンプ類似スレ一覧スレッドの検索話題のニュースおまかせリストオプションしおりを挟むスレッドに書込スレッドの一覧暇つぶし2ch