reduction rule - определение. Что такое reduction rule
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Что (кто) такое reduction rule - определение

PROCESS OF REDUCING THE NUMBER OF RANDOM VARIABLES UNDER CONSIDERATION
Dimension reduction; Dimensionality Reduction; Dimensionality reduction algorithm; Linear 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.
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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).
Great Reduction         
LAND REFORMS IN SECOND MILLENNIUM SWEDEN; A TAKING-BACK OF POSSESSIONS FROM THE NOBILITY BY THE CROWN
Great Reduction (Sweden); Reduction (Sweden)
In the Great Reduction of 1680, by which the ancient landed nobility lost its power base, the Swedish Crown recaptured lands earlier granted to the nobility. Reductions () in Sweden and its dominions were the return to the Crown of fiefs that had been granted to the Swedish nobility.
Selective reduction         
ABORTION OF ONE OR MORE (BUT NOT ALL) FETUSES IN A MULTIPLE PREGNANCY
Fetal reduction; Pregnancy reduction, multifetal; Selective fetal reduction; Selective termination
Selective reduction is the practice of reducing the number of fetuses in a multiple pregnancy, such as quadruplets, to a twin or singleton pregnancy. The procedure is also called multifetal pregnancy reduction.
Reduction of capital         
STOCK VALUE DECREASE OF A COMPANY
Capital reduction; Reduction of the capital; Reduction of capital stock
Reduction of capital or capital reduction is to decrease stock of a company. During reduction of capital, sometimes the company returns a portion of the stock of a company to shareholder.
Zaitsev's rule         
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  • Alexander Mikhaylovich Zaitsev
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EMPIRICAL RULE PREDICTING THE MAJOR PRODUCT(S) IN ELIMINATION REACTION
Saytzeff's rule; Zaitsev's Rule; Zaitsev's product; Saytzeff rule; Saytzeff's Rule; Saytzev's rule; Zaytsev product; Saytzeff Rule; Zaitsev rule; Saytsev's rule; Saytsev rule
In organic chemistry, Zaitsev's rule (or Saytzeff's rule, Saytzev's rule) is an empirical rule for predicting the favored alkene product(s) in elimination reactions. While at the University of Kazan, Russian chemist Alexander Zaitsev studied a variety of different elimination reactions and observed a general trend in the resulting alkenes.
mail box rule         
RULE REGARDING ACCEPTANCE BY POST OF OFFERS IN ANGLO-AMERICAN CONTRACT LAW
Mail box rule; Postal acceptance rule; Postal rule; Postage rule; Deposited acceptance rule; Mailbox rule; Postal exception
n. in contract law, making a written offer or acceptance of offer valid if sent in the mail, with postage, within the time in which the offer must be accepted, unless the offer requires acceptance by personal delivery on or before the specified date. The rule may also apply to mailing payments of insurance premiums when due. However, relying on this so-called "rule" can be dangerous, since the party awaiting the acceptance or payment may cancel the offer if there is no response in hand when the time runs out.
Posting rule         
RULE REGARDING ACCEPTANCE BY POST OF OFFERS IN ANGLO-AMERICAN CONTRACT LAW
Mail box rule; Postal acceptance rule; Postal rule; Postage rule; Deposited acceptance rule; Mailbox rule; Postal exception
The posting rule (or mailbox rule in the United States, also known as the "postal rule" or "deposited acceptance rule") is an exception to the general rule of contract law in common law countries that acceptance of an offer takes place when communicated. Under the posting rule, that acceptance takes effect when a letter is posted (that is, dropped in a post box or handed to a postal worker); the post office will be the universal service provider, such as the UK's Royal Mail, the Australia Post, or the United States Postal Service.
Rule, Britannia!         
  • ''Britannia rule the waves'': decorated plate made in [[Liverpool]] circa 1793–1794 ([[Musée de la Révolution française]]).
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BRITISH PATRIOTIC SONG
Rule, Britannia; Rule Brittania; Rule britannia; Rule Brittania!; Rule, Brittania!; Rule Britannia!; Hail Britannia; Hail Britannia!; Rule Britannia; Rule, Brittania; Rule Britannia, Britannia rule the waves
"Rule, Britannia!" is a British patriotic song, originating from the 1740 poem "Rule, Britannia" by James Thomson and set to music by Thomas Arne in the same year.
Mercy rule         
RULE THAT ENDS A SPORTS EVENT DUE TO AN INSURMOUNTABLE LEAD
Mercy rule (baseball); Run rule; Skunk rule; Ten-run rule; Ten run rule; Run-ahead rule; Run ahead rule
A mercy rule, slaughter rule, knockout rule, or skunk rule ends a two-competitor sports competition earlier than the scheduled endpoint if one competitor has a very large and presumably insurmountable scoring lead over the other. It is called the mercy rule because it spares further humiliation for the loser.
Kevin James Rule         
BOTANIST (BORN 1941)
Kevin Rule
Kevin James Rule was born at Daylesford, Victoria on 9 November 1941. He was a secondary school teacher and had a particular interest in the taxonomy of Australian eucalyptus.

Википедия

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). Dimensionality reduction is common in fields that deal with large numbers of observations and/or large numbers of variables, such as signal processing, speech recognition, neuroinformatics, and bioinformatics.

Methods are commonly divided into linear and nonlinear approaches. Approaches can also be divided into feature selection and feature extraction. Dimensionality reduction can be used for noise reduction, data visualization, cluster analysis, or as an intermediate step to facilitate other analyses.