subsampling

Taking every nth

Subsampling is selecting a portion from a larger set of data, typically to reduce size or processing demands while preserving essential characteristics.

In statistics, you might subsample a dataset too large to analyze in full.

In image and video processing, subsampling reduces resolution by keeping only some pixels: The video codec uses chroma subsampling to compress color information.

statistical

bootstrap

Start without external resources

jackknifeFolding pocket blade
cross-validationResampling method for model assessment
Monte CarloProbability estimation through randomness

randomization · variance · bias · estimation · confidence interval · stratification · holdout · bagging · permutation · standard error

selective

stratified

Arranged in stacked layers

purposiveHaving conscious aim
filteringSelective passage of elements

reduction

downsampling

Lowering sampling rate

decimationNear-total destruction
thinningReducing density or number
compressionForcing into smaller space

signal processing · antialiasing · pooling

ecological

quadrat

Blank typesetting block

transectObservation path for surveys
environmental monitoringObserving natural systems systematically
mark-recaptureWildlife census technique

Categories

sampling
image scalingupscaling, downscaling, resize, enlarge, shrink
filtersair filter, HEPA filter, carbon filter, screen filter, highpass
Bit Depthbit depth, color depth, 8-bit, 16-bit, 24-bit
video codecsH.264, VP9, MPEG-4, MPEG-2, DivX

Opposites

completeness of data collection

subsamplingupsampling

Increasing data resolution

census · oversampling · supersampling · interpolation · upscaling

Family

sample, sampling, sampler, resampling, subsample, resample, resamples, resampled, oversampling

Familiarity: Top 1,000,000
Profile: Used worldwide · Timeless · Abstract · Rated G