yuhao yang created SPARK-22195:
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Summary: Add cosine similarity to
org.apache.spark.ml.linalg.Vectors
Key: SPARK-22195
URL: https://issues.apache.org/jira/browse/SPARK-22195
Project: Spark
Issue Type: New Feature
Components: ML
Affects Versions: 2.2.0
Reporter: yuhao yang
Priority: Minor
https://en.wikipedia.org/wiki/Cosine_similarity:
As the most important measure of similarity, I found it quite useful in some
image and NLP applications according to personal experience.
Suggest to add function for cosine similarity in
org.apache.spark.ml.linalg.Vectors.
Interface:
def cosineSimilarity(v1: Vector, v2: Vector): Double = ...
def cosineSimilarity(v1: Vector, v2: Vector, norm1: Double, norm2: Double):
Double = ...
Appreciate suggestions and need green light from committers.
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