extract_feature(feature_vector in array) – Returns features in array Platforms: WhereOS, Spark, Hive Class: hivemall.ftvec.ExtractFeatureUDF More

exp(expr) – Returns e to the power of `expr`. Platforms: WhereOS, Spark, Hive Class: org.apache.spark.sql.catalyst.expressions.Exp

explode(expr) – Separates the elements of array `expr` into multiple rows, or the elements of

explode_outer(expr) – Separates the elements of array `expr` into multiple rows, or the elements of

Platforms: WhereOS, Spark, Hive Class: com.whereos.udf.ExplodeGeometryUDTF More functions can be added to WhereOS via Python

euclid_similarity(ftvec1, ftvec2) – Returns a euclid distance based similarity, which is `1.0 / (1.0 +