microsoft/SynapseML

Request: Spark Scala standalone app example for LightGBM

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#731 opened on Nov 12, 2019

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area/documentationgood first issue

Description

We have LightGBM - Quantile Regression for Drug Discovery.ipynb as PySpark code example.

I would like to request Spark Scala example as API does not exactly the same (can copy paste) between PySpark and Spark.

An Spark example will be helpful for beginner.

Contributor guide

Tech stack
scalapython
Domain
machine learningdocumentation
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Scala programmingApache SparkLightGBM basicsPySpark experience
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
Review the existing PySpark notebook at 'notebooks/samples/LightGBM Quantile Regression for Drug Discovery.ipynb' to understand the workflow. Then refer to the SynapseML LightGBM Scala API documentation to implement a standalone Scala app that replicates the same functionality. Check if the repository has other Scala examples for guidance.