harmonic average

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Harmonic average

Tags: none Iuc ase TGT TPS HCL SDH PDF WCEExcerpted from https://www.cnblogs.com/xiaobajiu/p/7867162.htmlAlgebraic form of harmonic averages (popular):Scenario: When the sample independent variable (height) is equal to the product of the dependent

Take a dip in analytical math (Zhang Kaijun)

Tags: conditional target process Peter practice dimension table One thing China systemIt is said that the latest reform of the college entrance examination of the math test occupies an important share, which reminds of why the "society like

Average mean, majority mode, median median and standard deviation stddev

Label:average mean, majority mode, median median and standard deviation stddevMean, number, median, nominal difference: The mean value is calculated on all data, it has excellent mathematical properties, and is the most widely used

Question: On what occasions should geometric averages be used, rather than arithmetic averages?!

Label:Question: On what occasions should geometric averages be used, rather than arithmetic averages?!Question: On what occasions should geometric averages be used, rather than arithmetic averages?!(7.6 Day Note, perhaps the topic is changed to what

Image processing (convolution)

Label:Image processing (convolution)calculation steps for convolution: (Dynamic Demo) The h (n) is folded around the longitudinal axis to H (-N); H (n-m) is shifted to H (-M); Multiplies all the corresponding entries of X (m) and H (

Machine learning Notes (ii) model evaluation and selection

Tags: example represents balanced relationship intent add informed resolution measure2. Model evaluation and Selection 2.1 experience error and overfittingDifferent learning algorithms and different models of different parameters are related to the

Relive naive Bayes

Label:Today, through Starford machine learning courseware, the next Naive Bayes algorithm is reviewed, and several key points of knowledge are recorded as follows:The derivation process of 1.Naive Bayes formula2. Calculation of classification

Hash probability problem

Label:Hash is a sharp knife, processing a huge amount of data often used, we may often use hash, but some of the characteristics of the hash you have thought about, understand. We can use our knowledge of probabilities and expectations to analyze

(reproduced) key indicators for high speed ADCs: Quantization error, offset/gain error, DNL, INL, ENOB, resolution, RMS, SFDR, THD, SINAD, DBFS, two-tone IMD

Label:(i) a basic conceptdecibel (db): a amplitude unit defined by a logarithm. For voltage values, the db is given in 20log (VA/VB) and for the power value, given in 10log (PA/PB). DBC is a DB value relative to a carrier signal, and dbm is a DB

The Fourier transform of the image and the physical meaning of the two-dimensional Fourier transform

From the perspective of modern mathematics, Fourier transform is a special integral transformation. It can represent a function that satisfies a certain condition as a linear combination or integral of the sine basis function. In different fields of

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