Data Preparation

[beccamc]

Work Items

• [DataFrame] IDataView <-> DataFrame Interop #2192
• Advanced Data Options - Data Split & Validation Dataset #2396

Related issues

• Suggestion: Support multiple input files #1964
• Option to specify a test dataset #60
• SQL Improvements SQL Improvement #1761

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• DataFrame Joins - Microsoft.Data.Analysis DataFrame.Join infinite loop machinelearning#6128 & Microsoft.Data.Analysis.DataFrame Join should produce a result with a single joined column machinelearning#6133
• DataFrame supports IDataView types (especially VBuffer) so ToDataFrame() doesn’t break.DataFrame (Microsoft.Data.Analysis) Tracking Issue  machinelearning#6144
• Investigate perf of hiding ignored columns #1756