FeatureExtract

FeatureExtract[{example1,example2,…}] extracts features for each of the examplei using a feature extractor trained on all the examplei.

• FeatureExtract[examples,extractor] extracts features using the specified feature extractor method.
• FeatureExtract[examples,{extractor1,extractor2,…}] extracts features by applying the extractori in sequence.
• FeatureExtract[examples,spec->ext] uses the extractor methods specified by ext on parts of examples specified by spec.
• FeatureExtract[examples,{spec1->ext1,spec2->ext2,…}] uses the extractor methods exti on parts of examples specified by the speci.

Examples

(* Extract features from images *)
FeatureExtract[{img1, img2, img3}]

(* Use PCA for dimensionality reduction *)
FeatureExtract[data, {"StandardizedVector", "PCA"}]

(* Extract features from text *)
FeatureExtract[{"hello", "world", "test"}, "TFIDF"]

Please visit the official Wolfram Language Reference for more details.