神经网络模型的效果以及优化的目标是通过损失函数（loss function）来定义的。下面主要介绍适用于分类问题和...
InPython, you’re most likely going to use thesklearn.metrics.mean_squared_errorfunction. This function will take the actual true y values and your predicted ones, and it will return the value of the loss function. If you want to calculate it from scratch, you are going to need the fo...
The Hypex flare formula gives improved acoustical per- formance, particularly at the lower fre- quencies. With sound distribution over a complete circular area, this projector is intended for installations where coverage of relatively large areas and suspension tI'nm the ceiling are desired. ...
The maximum output current, IMAX, which can be supplied in Burst Mode operation is dependent upon the input and output voltage as approximated by the following formula: IMAX = IPK VIN • η• A 2 VIN + VOUT where IPK is the Burst Mode peak current limit...
LOSS (mW) 100 VIN 6.5V TO 62V 10 1 0.1 0.01 0.001 0.01 0.1 1 10 LOAD CURRENT (mA) 100 3990 TA01b 3990fa 1 LT3990/LT3990-3.3/LT3990-5 ABSOLUTE MAXIMUM RATINGS (Note 1) VIN, EN/UVLO Voltage...62V BOOST Pin Voltage...75V BOOST Pin Above SW Pin...30V FB/VOUT...
RMS current is given by: IRMS =IOUT(MAX) • VOUT VIN • –1 VIN VOUT This formula has a maximum at VIN = 2VOUT, where IRMS = IOUT/2. This simple worst-case condition is commonly used for design because even significant deviations do not offer much relief. Note that ripple ...
(kΩ) 0.2 232 0.3 150 0.4 110 0.5 88.7 0.6 71.5 0.7 60.4 0.8 52.3 1.0 41.2 1.2 33.2 14 28.0 1.6 23.7 1.8 20.5 2.0 18.2 2.2 15.8 For applications that cannot allow deviation from the programmed switching frequency at low VIN/VOUT ratios use the following formula to set switching ...
It can be estimated with the formula: IC(RMS) = ∆IL / 12 Another constraint on the output capacitor is that it must have greater energy storage than the inductor; if the stored energy in the inductor transfers to the output, the resulting voltage step should be small compared to the ...
The junction temperature (TJ, in °C) is calculated from the ambient temperature (TA, in °C) and power dissipation (PD, in Watts) according to the formula: TJ = TA + (PD • θJA), where θJA = 43°C/W is the package thermal impedance. Note 3: This IC includes overtemperature...
The junction temperature (TJ, in °C) is calculated from the ambient temperature (TA, in °C) and power dissipation (PD, in Watts) according to the formula: TJ = TA + (PD • θJA) where θJA (in °C/W) is the package thermal impedance. 0.92 5 l 125 0.6 0.9 TYP 5.4 3.3 ...