FeatureDistance [example1,example2,extractor]
gives the distance between example1 and example2 in the feature space defined by extractor.
FeatureDistance [extractor]
represents an operator form of FeatureDistance that can be applied to a pair of examples.
FeatureDistance
FeatureDistance [example1,example2,extractor]
gives the distance between example1 and example2 in the feature space defined by extractor.
FeatureDistance [extractor]
represents an operator form of FeatureDistance that can be applied to a pair of examples.
Details and Options
- FeatureDistance can be used on many types of data, including numerical, textual, sounds, and images, as well as combinations of these.
- The extractor is typically a FeatureExtractorFunction object as generated by FeatureExtraction .
- FeatureDistance [extractor][ex1,ex2] is equivalent to FeatureDistance [ex1,ex2,extractor].
- The following options can be given:
-
- The option DistanceFunction can be any distance or dissimilarity function or a function f defining a distance between two values.
- For numeric feature vectors, the default setting is DistanceFunction EuclideanDistance .
Examples
open all close allBasic Examples (1)
Construct a dataset of dog images:
Train an extractor function from this dataset:
Compute the distance in the feature space between two images using FeatureDistance :
Generate an operator form of FeatureDistance :
This operator form can be used to compute distances:
Compute the distance matrix of the dataset using this feature distance:
Find the dog that maximizes its distance from the others in the feature space:
Options (1)
DistanceFunction (1)
Train a feature extractor to compute term frequency-inverse document frequency vectors from texts:
Construct a feature distance for this feature extractor:
The distance function EuclideanDistance has been chosen. Use the option DistanceFunction to chose CosineDistance instead:
Related Guides
History
Text
Wolfram Research (2016), FeatureDistance, Wolfram Language function, https://reference.wolfram.com/language/ref/FeatureDistance.html.
CMS
Wolfram Language. 2016. "FeatureDistance." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/FeatureDistance.html.
APA
Wolfram Language. (2016). FeatureDistance. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/FeatureDistance.html
BibTeX
@misc{reference.wolfram_2025_featuredistance, author="Wolfram Research", title="{FeatureDistance}", year="2016", howpublished="\url{https://reference.wolfram.com/language/ref/FeatureDistance.html}", note=[Accessed: 16-November-2025]}
BibLaTeX
@online{reference.wolfram_2025_featuredistance, organization={Wolfram Research}, title={FeatureDistance}, year={2016}, url={https://reference.wolfram.com/language/ref/FeatureDistance.html}, note=[Accessed: 16-November-2025]}