# Definitions for loessˈloʊ ɛs, lɛs, lʌsloess

### Princeton's WordNetRate this definition:0.0 / 0 votes

1. loessnoun

a fine-grained unstratified accumulation of clay and silt deposited by the wind

### WiktionaryRate this definition:0.0 / 0 votes

1. loessnoun

any sediment, dominated by silt, of eolian (wind-blown) origin

### WikipediaRate this definition:0.0 / 0 votes

1. loess

Local regression or local polynomial regression, also known as moving regression, is a generalization of the moving average and polynomial regression. Its most common methods, initially developed for scatterplot smoothing, are LOESS (locally estimated scatterplot smoothing) and LOWESS (locally weighted scatterplot smoothing), both pronounced . They are two strongly related non-parametric regression methods that combine multiple regression models in a k-nearest-neighbor-based meta-model. In some fields, LOESS is known and commonly referred to as Savitzky–Golay filter (proposed 15 years before LOESS). LOESS and LOWESS thus build on "classical" methods, such as linear and nonlinear least squares regression. They address situations in which the classical procedures do not perform well or cannot be effectively applied without undue labor. LOESS combines much of the simplicity of linear least squares regression with the flexibility of nonlinear regression. It does this by fitting simple models to localized subsets of the data to build up a function that describes the deterministic part of the variation in the data, point by point. In fact, one of the chief attractions of this method is that the data analyst is not required to specify a global function of any form to fit a model to the data, only to fit segments of the data. The trade-off for these features is increased computation. Because it is so computationally intensive, LOESS would have been practically impossible to use in the era when least squares regression was being developed. Most other modern methods for process modeling are similar to LOESS in this respect. These methods have been consciously designed to use our current computational ability to the fullest possible advantage to achieve goals not easily achieved by traditional approaches. A smooth curve through a set of data points obtained with this statistical technique is called a loess curve, particularly when each smoothed value is given by a weighted quadratic least squares regression over the span of values of the y-axis scattergram criterion variable. When each smoothed value is given by a weighted linear least squares regression over the span, this is known as a lowess curve; however, some authorities treat lowess and loess as synonyms.

### ChatGPTRate this definition:0.0 / 0 votes

1. loess

Loess is a type of sediment, specifically a silt-sized sediment, made of quartz, feldspar, mica, and other minerals. It is typically yellowish in color and has been deposited by the wind. This loamy, fine-grained deposit can be found in substantial amounts in certain areas around the world, often transported there from other regions by wind and water. Loess is known for being loosely compacted and highly susceptible to erosion, but also for its ability to retain water and support vegetation.

### Webster DictionaryRate this definition:0.0 / 0 votes

1. Loessnoun

a quaternary deposit, usually consisting of a fine yellowish earth, on the banks of the Rhine and other large rivers

2. Etymology: [G. lss.]

### WikidataRate this definition:0.0 / 0 votes

1. Loess

Loess is a clastic, predominantly silt-sized sediment, which is formed by the accumulation of wind-blown dust. Loess is an aeolian sediment formed by the accumulation of wind-blown silt, typically in the 20–50 micrometre size range, twenty percent or less clay and the balance equal parts sand and silt that are loosely cemented by calcium carbonate. It is usually homogeneous and highly porous and is traversed by vertical capillaries that permit the sediment to fracture and form vertical bluffs. The word loess, with connotations of origin by wind-deposited accumulation, can probably be traced back to Alemannic dialects of German, corresponding to the German word locker, or English loose. It was first applied to Rhine River valley loess about 1821.

### Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Loess

lės, or lō′es, n. a loamy deposit of Pleistocene age, in the valleys of the Rhine, Danube, and Rhone.—Also Löss. [Ger. löss.]

1. loses

2. sloes

3. soles

### Numerology

1. Chaldean Numerology

The numerical value of loess in Chaldean Numerology is: 3

2. Pythagorean Numerology

The numerical value of loess in Pythagorean Numerology is: 7

### Popularity rank by frequency of use

loess#10000#77136#100000

## Translations for loess

### From our Multilingual Translation Dictionary

• лёс
• льос
• spraš
• løss
• Löss
• leŭso
• loess
• بادرفت
• lössi
• lœss
• loess
• 黄砂
• 황사, 黃砂
• loes
• löss
• løss
• less
• loess, loesse
• лёсс
• лес, les
• лес
• hoàng sa

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