subsample

[/ˈsʌbˌsæmpəl/]
noun, verbpl: subsamples
subamostra
1. A sample taken from a larger sample; a subset of data selected from an existing sample for further analysis
The researchers analyzed a subsample of 200 participants from the original study of 1,000 people.
Os pesquisadores analisaram uma subamostra de 200 participantes do estudo original de 1.000 pessoas.
2. To select or extract a subsample from a larger sample or dataset
We decided to subsample the data to reduce computational load.
Decidimos fazer uma subamostragem dos dados para reduzir a carga computacional.
3. In statistics and machine learning, to reduce the size of a dataset by selecting a smaller representative subset
The algorithm will subsample the training data to improve processing speed.
O algoritmo fará subamostragem dos dados de treinamento para melhorar a velocidade de processamento.
This is a specialized term primarily used in academic, statistical, and computational contexts in both English and Portuguese-speaking countries. It is common in research methodology, data science, and scientific publications. The term has become increasingly prevalent with the growth of big data and machine learning applications.
Synonyms / Sinônimos
subsetsamplesub-samplesubgrouppartial sample
Antonyms / Antônimos
full samplecomplete datasetpopulation

Regional Variations

General Brazilian Portuguese
subamostra
Standard term used in academic and statistical contexts
Portugal
subamostra
Same usage as Brazilian Portuguese; common in scientific literature
Technical/Computing Contexts
subamostragem (verb form)
Used when referring to the action of subsampling data

Related Words

samplingsample sizestratified samplingrandom samplingdata reductionstatistical analysis

Related Idioms & Phrases

draw a subsample from
extract a subsample
subsample analysis
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