Piecewise算法计算超越函数及其FPGA实现
Piecewise산법계산초월함수급기FPGA실현
Calculating Transcendental Function with Piecewise Algorithm and Its FPGA Implementation
  • 万方数据
    核电子学与探测技术 핵전자학여탐측기술
    NUCLEAR ELECTRONICS & DETECTION TECHNOLOGY
    2010年 6期 755-758,770 ,共5页

    杨阳%王永纲%都军伟

    양양%왕영강%도군위

    piecewise%tanh%FPGA piecewise%tanh%FPGA
    piecewise%tanh%FPGA
    使用分段逼近(piecewise approximation)算法计算超越函数,以神经网络中最常用的双曲正切型(tanh)传输函数为例来分析逼近精度同分段数、有限字长之间的关系,并给出如何最优地选取分段数和字长来达到所需的精度.还在FPGA上硬件实现了基于piecewise算法来计算tanh函数,并且比较了几种piecewise approximation算法以及其它常见硬件算法(如CORDIC,Look-up table)的资源消耗和速度.
    사용분단핍근(piecewise approximation)산법계산초월함수,이신경망락중최상용적쌍곡정절형(tanh)전수함수위례래분석핍근정도동분단수、유한자장지간적관계,병급출여하최우지선취분단수화자장래체도소수적정도.환재FPGA상경건실현료기우piecewise산법래계산tanh함수,병차비교료궤충piecewise approximation산법이급기타상견경건산법(여CORDIC,Look-up table)적자원소모화속도.
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