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POINT ESTIMATION [5 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2014-01-16

English

Subject field(s)
  • Statistical Methods
DEF

The estimation of a parameter by assigning it a unique value ...

CONT

The merits of a method of point estimation are assessed in terms of the properties of the estimator which gives rise to the particular estimate; for example, unbiasedness, consistency, sufficiency, relative efficiency, and minimum variance.

French

Domaine(s)
  • Méthodes statistiques
DEF

Méthode d'estimation statistique ayant pour objet, au moyen d'un estimateur, de déterminer une valeur unique, considérée comme optimale d'un paramètre p.

Spanish

Campo(s) temático(s)
  • Métodos estadísticos
Save record 1

Record 2 2010-04-27

English

Subject field(s)
  • Probability (Statistics)
  • Atmospheric, Climatic and Meteorological Phenomena
CONT

Cloud amounts are expressed in terms of the fraction of the sky covered. For some purposes, tenths of sky are used, and for others, eighths. This part of the observation is almost always entirely non-instrumental. From an observation point commanding an unobstructed view of the sky, the amount of cloud may be determined by estimation.

French

Domaine(s)
  • Probabilités (Statistique)
  • Phénomènes météorologiques, climatiques et atmosphériques
CONT

Nébulosité. Fraction de ciel couverte par des nuages, quels qu'ils soient, à un moment donné et sur une station déterminée. (On évalue la nébulosité à l'estime).

Spanish

Save record 2

Record 3 2008-08-01

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
  • Spacecraft
  • Remote Sensing
DEF

The process of overlaying two or more images of the same scene acquired from different viewpoints, by different sensors and/or at different times so that the pixels of the same coordinates in the images correspond to the same part of the scene.

CONT

Regardless of the image data involved and of the particular application, image registration usually consists of the four major steps :... direction of control points candidates, control point matching, estimation of the mapping model and resampling and transformation.

OBS

image registration: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Engins spatiaux
  • Télédétection
DEF

Procédé qui consiste à faire coïncider géométriquement plusieurs images, représentant la partie commune d'une scène, obtenues soit à des dates distinctes, [...] soit au même instant, mais dans des bandes spectrales différentes.

OBS

superposition d'images : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Campo(s) temático(s)
  • Guía radárica, radioguía y radiogoniometría
  • Naves espaciales
  • Teledetección
CONT

¿Cómo es el registro de una imagen? En primer lugar, debemos saber cómo registrar una imagen en otra. En este caso contamos con una imagen principal (Master), es decir, la parte escaneada de un mapa, y una imagen secundaria (Slave). Para empezar, leemos las coordenadas (números de fila y columna) de algunos puntos destacados de la imagen principal y las buscamos en la imagen secundaria. A continuación pedimos al programa que ejecute la transformación del contenido de la imagen completa. Después de este proceso se pueden superponer las dos imágenes.

Save record 3

Record 4 2001-07-25

English

Subject field(s)
  • Oil Drilling
  • Petroleum Technology - Safety
DEF

A gradual pressurizing of the casing after the blowout preventers have been installed to permit estimation of the casing burst point.

French

Domaine(s)
  • Forage des puits de pétrole
  • Sécurité (Technologie pétrolière)
OBS

La montée en pression est arrêtée lorsqu'on provoque la fracturation des terrains.

Spanish

Save record 4

Record 5 1989-09-22

English

Subject field(s)
  • Statistical Methods
CONT

The sample mean and the sample variant, calculated from sample observations to estimate the corresponding population parameters, are known as point estimators of the population mean and variant.

OBS

point estimation : the estimation of a parameter by assigning it a unique value called a point estimate.

French

Domaine(s)
  • Méthodes statistiques
  • estimateur ponctuel
    correct, masculine noun
OBS

estimation statistique ponctuelle : méthode d'estimation statistique ayant pour objet, au moyen d'un estimateur, de déterminer une valeur unique, considérée comme optimale d'un paramètre.

Spanish

Save record 5

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