winnowˈwɪn oʊ
winnow (v)
- present
- winnows
- past
- winnowed
- past participle
- winnowed
- present participle
- winnowing
winnow (n)
- plural
- winnows
English Definitions:
winnow, winnowing, sifting (verb)
the act of separating grain from chaff
"the winnowing was done by women"
winnow, fan (verb)
separate the chaff from by using air currents
"She stood there winnowing chaff all day in the field"
winnow (verb)
blow on
"The wind was winnowing her hair"; "the wind winnowed the grass"
cull out, winnow (verb)
select desirable parts from a group or list
"cull out the interesting letters from the poet's correspondence"; "winnow the finalists from the long list of applicants"
winnow (verb)
blow away or off with a current of air
"winnow chaff"
winnow (Noun)
That which winnows or which is used in winnowing; a contrivance for fanning or winnowing grain.
winnow (Verb)
To subject (granular material, especially food grain) to a current of air separating heavier and lighter components, as grain from chaff.
winnow (Verb)
To separate, sift, analyze, or test in this manner.
winnow (Verb)
To blow upon or toss about by blowing; to set in motion as with a fan or wings.
winnow (Verb)
To move about with a flapping motion, as of wings; to flutter.
Winnow
The winnow algorithm is a technique from machine learning for learning a linear classifier from labeled examples. It is very similar to the perceptron algorithm. However, the perceptron algorithm uses an additive weight-update scheme, while Winnow uses a multiplicative scheme that allows it to perform much better when many dimensions are irrelevant. It is a simple algorithm that scales well to high-dimensional data. During training, Winnow is shown a sequence of positive and negative examples. From these it learns a decision hyperplane that can then be used to label novel examples as positive or negative. The algorithm can also be used in the online learning setting, where the learning and the classification phase are not clearly separated.
winnow
Winnowing is a process by which chaff is separated from grain. It can also be used to remove pests from stored grain. Winnowing usually follows threshing in grain preparation. In its simplest form, it involves throwing the mixture into the air so that the wind blows away the lighter chaff, while the heavier grains fall back down for recovery. Techniques included using a winnowing fan (a shaped basket shaken to raise the chaff) or using a tool (a winnowing fork or shovel) on a pile of harvested grain.
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"winnow." Kamus.net. STANDS4 LLC, 2024. Web. 18 Apr. 2024. <https://www.kamus.net/english/winnow>.
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