[SPARK-21481] Add indexOf method in ml.feature.HashingTF similar to mllib.feature.HashingTF

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.1.0, 2.2.0
• Fix Version/s: 3.0.0
• Component/s: ML
• Assignee: Huaxin Gao
• Reporter: Aseem Bansal
• Created: 20/Jul/17 06:45
• Updated: 12/Dec/22 18:10
• Resolved: 28/Jul/19 13:33

Description

If we want to find the index of any input based on hashing trick then it is possible in https://spark.apache.org/docs/2.2.0/api/scala/index.html#org.apache.spark.mllib.feature.HashingTF but not in https://spark.apache.org/docs/2.2.0/api/scala/index.html#org.apache.spark.ml.feature.HashingTF.

Should allow that for feature parity

Issue Links

• depends upon: SPARK-21748 Migrate the implementation of HashingTF from MLlib to ML
• Is contained by: SPARK-13964 Feature hashing improvements
• links to: [Github] Pull Request #18736 (facaiy)
• links to: [Github] Pull Request #29852 (zhengruifeng)
• links to: GitHub Pull Request #25250
• links to: GitHub Pull Request #25324