An Optimized Deep-Learning-Based Low Power Approximate Multiplier Design  

作　　者：M.Usharani B.Sakthivel S.Gayathri Priya T.Nagalakshmi J.Shirisha 

机构地区：[1]Department of Electronics and Communication Engineering,Er.Perunal Manimekalai College of Engineering,Konneripalli,Hosur,635117,India [2]Department of Electronics and Communication Engineering,Pandian Saraswathi Yadav Engineering College,Sivagangai,Tamilnadu,630561,India [3]Department of Electronics and Communication Engineering,R.M.D Engineering College,Gummidipundi,Tamilnadu,601206,India [4]Department of Computer Science and Engineering,Koneru Lakshmaiah Education Foundation,Vaddeswaram,Guntur,522502,India [5]Department of Electronics and Communication Engineering,Malla Reddy Engineering College,Hyderabad,Telangana,500015,India

出　　处：《Computer Systems Science & Engineering》2023年第2期1647-1657,共11页计算机系统科学与工程（英文）

摘　　要：Approximate computing is a popularfield for low power consumption that is used in several applications like image processing,video processing,multi-media and data mining.This Approximate computing is majorly performed with an arithmetic circuit particular with a multiplier.The multiplier is the most essen-tial element used for approximate computing where the power consumption is majorly based on its performance.There are several researchers are worked on the approximate multiplier for power reduction for a few decades,but the design of low power approximate multiplier is not so easy.This seems a bigger challenge for digital industries to design an approximate multiplier with low power and minimum error rate with higher accuracy.To overcome these issues,the digital circuits are applied to the Deep Learning(DL)approaches for higher accuracy.In recent times,DL is the method that is used for higher learning and prediction accuracy in severalfields.Therefore,the Long Short-Term Memory(LSTM)is a popular time series DL method is used in this work for approximate computing.To provide an optimal solution,the LSTM is combined with a meta-heuristics Jel-lyfish search optimisation technique to design an input aware deep learning-based approximate multiplier(DLAM).In this work,the jelly optimised LSTM model is used to enhance the error metrics performance of the Approximate multiplier.The optimal hyperparameters of the LSTM model are identified by jelly search opti-misation.Thisfine-tuning is used to obtain an optimal solution to perform an LSTM with higher accuracy.The proposed pre-trained LSTM model is used to generate approximate design libraries for the different truncation levels as a func-tion of area,delay,power and error metrics.The experimental results on an 8-bit multiplier with an image processing application shows that the proposed approx-imate computing multiplier achieved a superior area and power reduction with very good results on error rates.

关 键 词：Deep learning approximate multiplier LSTM jellyfish 

分 类 号：TP181[自动化与计算机技术—控制理论与控制工程]