variance-reduction technique - significado y definición. Qué es variance-reduction technique
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Qué (quién) es variance-reduction technique - definición

SOUND RECORDING TECHNIQUE
Ping pong recording technique; Ping-pong recording technique; Reduction mixing; Bouncing down

Bias–variance tradeoff         
  • Bias and variance as function of model complexity
PROPERTY OF A SET OF PREDICTIVE MODELS WHEREBY MODELS WITH A LOWER BIAS IN PARAMETER ESTIMATION HAVE A HIGHER VARIANCE OF THE PARAMETER ESTIMATES ACROSS SAMPLES, AND VICE VERSA
Bias variance; Bias-variance tradeoff; Bias-variance dilemma; Bias–variance dilemma; Bias-variance decomposition; Bias–variance decomposition; Bias and variance tradeoff; Bias--variance tradeoff
In statistics and machine learning, the bias–variance tradeoff is the property of a model that the variance of the parameter estimated across samples can be reduced by increasing the bias in the estimated parameters.
Allan variance         
  • (''y'' − ''y''′)<sup>2</sup>}} is equal to twice the Allan variance (or Allan deviation squared) for observation time ''τ''.
  • Example plot of the Allan deviation of a clock. At very short observation time ''τ'', the Allan deviation is high due to noise. At longer ''τ'', it decreases because the noise averages out. At still longer ''τ'', the Allan deviation starts increasing again, suggesting that the clock frequency is gradually drifting due to temperature changes, aging of components, or other such factors. The error bars increase with ''τ'' simply because it is time-consuming to get a lot of data points for large ''τ''.
MEASURE OF FREQUENCY STABILITY IN CLOCKS AND OSCILLATORS
Allen variance; Allan deviation; Allan Variance; ADEV
The Allan variance (AVAR), also known as two-sample variance, is a measure of frequency stability in clocks, oscillators and amplifiers. It is named after David W.
Dimensionality reduction         
  • A visual depiction of the resulting LDA projection for a set of 2D points.
  • A visual depiction of the resulting PCA projection for a set of 2D points.
PROCESS OF REDUCING THE NUMBER OF RANDOM VARIABLES UNDER CONSIDERATION
Dimension reduction; Dimensionality Reduction; Dimensionality reduction algorithm; Linear dimensionality reduction
Dimensionality reduction, or dimension reduction, is the transformation of data from a high-dimensional space into a low-dimensional space so that the low-dimensional representation retains some meaningful properties of the original data, ideally close to its intrinsic dimension. Working in high-dimensional spaces can be undesirable for many reasons; raw data are often sparse as a consequence of the curse of dimensionality, and analyzing the data is usually computationally intractable (hard to control or deal with).

Wikipedia

Ping-pong recording

Ping-pong recording (also called ping-ponging, bouncing tracks, or reduction mixing) is a method of sound recording. It involves combining multiple track stems into one, allowing more room for overdubbing when using tape recorders with a limited set of tracks. It is also used to simplify mixdowns.

The two most common methods consist of

  • Dubbing tracks between two tape recorders (or tracks on a multitrack recorder) connected through a mixing console
  • Dubbing tracks internally, through the onboard mixer of many machines, including Portastudios and similar multitrackers.

In both cases, a new instrument, voice, or other material may be added with each bounce, depending on the setup's mixing capabilities.

In analog recording, the audio quality normally decreases with each generation, while in digital recording, the quality is usually preserved. In either case, the most leeway comes with having the best possible source material.