其中, K_ν 为修正贝塞尔函数(modified Bessel function), Γ(ν) 为伽玛函数(gamma function)。图5展示了 l=1,ν=0.5,2.5,4.5 时的采样。 马顿函数在 ν=1/2 均方不可微,而在 ν≥7/2 时为高阶均方可微。在一些论文中建议用 ν=5/2 的马顿函数作为先验,它是二阶均方可微的
它们的积XY服从概率密度函数为p的分布 其中K0是贝塞尔函数(modified Bessel function) 它们的比符合柯西分布,满足X / Y∼Cauchy(0,σX / σY). 如果为独立标准正态随机变量,那么服从自由度为n的卡方分布。
是零阶修正贝塞尔函数(Zeroth-order modified Bessel function): 。 注意: 阶修正贝塞尔函数为: 。 如果 满足独立标准正态随机变量,即 ,则 满足自由度为 的卡方分布 例如: Complex Gaussian distriubution , and . where ,where follows Chi-squared distribition, , and . 复正态(高斯)分布 若复高斯分布 ,...
functionscipy.special.ivis used to compute the modified Bessel function of the first kind of real order; the functionscipy.stats.entropyis applied to calculate the entropy of the relative frequencies in the blurring version of our directional mean shift algorithm),collections(TheCounterfunction is ...
mirr函数计算修正后内部收益率(modified internal rate of return),是内部收益率的改进版本。 nper函数计算定期付款的期数。 rate函数计算利率(rate of interest)。 ## 7.10 计算终值 终值是基于一些假设给出的某个金融资产在未来某一时间点的价值。终值决定于4个参数——利率、期数、每期支付金额...
Compute the modified discrete cosine transform (MDCT) using the fast Fourier transform (FFT). audio_mdct = zaf.mdct(audio_signal, window_function) Inputs: audio_signal: audio signal (number_samples,) window_function: window function (window_length,) Output: audio_mdct: audio MDCT (number_freq...
– 12 – with Tl(0) = 1, ∂Tl(0) = 0, and where we have defined Ul(r) ≡ d + 2l r − 1 + 2mF Il+ Il+ d 2 d (mFr) 2 −1(mFr) , (4.4) in terms of modified Bessel functions I. We integrate the first step of the initial value problem, from 0 to δr, by ...
[2, 3]) Array slices are mutable: if they are assigned a new value the original array from which the slice was extracted is modified: In[53]: A[1:3] = [-2,-3] A Out[53]: array([ 1, -2, -3, 4, 5]) We can omit any of the three parameters in M[lower:upper:step]: ...
https://metacpan.org/pod/distribution/Math-Cephes/lib/Math/Cephes.pod#i0:-Modified-Bessel-function-of-order-zero 例子: >>> np.i0(0.) array(1.0) >>> np.i0([0, 1, 2, 3]) array([1. , 1.26606588, 2.2795853 , 4.88079259]) 相关用法 Python numpy isclose用法及代码示例 Python numpy...
Each of the two direct forms may be transposed by reversing the flow graph without altering the transfer function. Branch points are changed to summers and summers are changed to branch points.[1] These provide modified implementations that accomplish the same transfer function which can be mathemat...