openml / openml/OpenML

Inconsistency in dataset columns

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#768 5 comments 1 reaction 0 assignees View on GitHub

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CoreSystem
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Description

Several columns, such as creator and contributor, have the option to contain multiple values. These are stored in json/csv format. However the column default_target_type is stored in plain csv. Should we convert this to json (so tools can uniformly read them with native json libraries)

relevant for fetch_openml fn in sklean.

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Research direction

Start with the fetch_openml function in scikit-learn and trace how default_target_type is read alongside creator and contributor. Compare the existing JSON and CSV representations and determine whether uniform JSON storage is required; done means the column format and reader behavior are consistent.

Written by the indexing model from the issue text.

Assessment

Tech stack
scikit-learn
Domain
data, machine-learning
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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