openml/OpenML

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Open Machine Learning

Stars: 755
Forks: 128
Open beginner issues: 0
Indexed issues: 315

Dominant language: PHP
License: BSD-3-Clause
Last GitHub push: Aug 19, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue help wanted hacktoberfest
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

Open All

315 open issues indexed

Separate internal and external API endpoints in swagger files Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

openml/OpenML#1321 · Opened Sep 11, 2026
Unable to publish the results Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openml/OpenML#1319 · Opened Aug 18, 2026
Runs are published successfully, but evaluations remain null and do not appear on profile Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openml/OpenML#1318 · Opened Aug 17, 2026
backend: Add missing error logging for ElasticSearch indexing failures Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

openml/OpenML#1297 · Opened Jul 7, 2026
OpenML task API returns 503 for task 31, causing openml-python / HPOBench task loading to fail Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

openml/OpenML#1292 · 2 comments · 1 reaction · Opened Jun 2, 2026
[UX/UI] Sidebar responsiveness gap on intermediate screens (1280px) Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

openml/OpenML#1284 · 1 comment · Opened Feb 21, 2026
Add Comprehensive Code Quality Tools(PHPStan,Psalm,PHP-CS-Fixer) Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

openml/OpenML#1272 · 1 comment · Opened Nov 20, 2025
Security hardening: disable expose_php, raise max_input_time, remove Indexes Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

openml/OpenML#1268 · Opened Nov 17, 2025
Security hardening: disable expose_php, raise max_input_time, remove Indexes Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

openml/OpenML#1267 · 2 comments · Opened Nov 17, 2025
Security: sanitize/replace shell invocations to avoid injection Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

openml/OpenML#1265 · 1 comment · Opened Nov 17, 2025
Large uploads: raise php.ini max_input_time to avoid timeouts Open

Difficulty 1/5 Under an hour Newbie friendliness 55/100

openml/OpenML#1263 · 1 comment · Opened Nov 17, 2025
Security: Upgrade to PHP 8.x (7.4 is EOL) and ensure CI compatibility Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openml/OpenML#1261 · 1 comment · Opened Nov 17, 2025
Add a linting setup for current PHP codebase Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

openml/OpenML#1256 · Opened Nov 15, 2025
Modernize Issue Templates with YAML Forms Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

openml/OpenML#1254 · Opened Nov 15, 2025
Add security.yml Workflow Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

openml/OpenML#1249 · Opened Nov 15, 2025
Add ci.yml Workflow Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

openml/OpenML#1248 · Opened Nov 15, 2025
Add dependency-check.yml Workflow Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

openml/OpenML#1247 · Opened Nov 15, 2025
Add greetings.yml Workflow Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

openml/OpenML#1246 · Opened Nov 15, 2025
Add release.yml Workflow Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

openml/OpenML#1243 · Opened Nov 15, 2025
Add stale.yml Workflow Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

openml/OpenML#1242 · 2 comments · Opened Nov 15, 2025
Add labeler.yml Workflow Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

openml/OpenML#1240 · 2 comments · Opened Nov 15, 2025
Create Pull Request Template Open

Difficulty 1/5 Under an hour Newbie friendliness 55/100

openml/OpenML#1238 · Opened Nov 15, 2025
OverflowError: string longer than 2147483647 bytes for large datasets Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

openml/OpenML#1223 · Opened Feb 17, 2025
redundant estimation procedures in DB Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

openml/OpenML#1216 · 1 comment · Opened Jul 26, 2024
Support for survival tasks Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

openml/OpenML#1215 · Opened Jun 13, 2024
Flow upload on test server broken Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

openml/OpenML#1214 · 1 comment · Opened Jun 11, 2024
Error when downloading task splits for survival Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

openml/OpenML#1213 · Opened Jun 10, 2024
Weird task state for 361162? Open

bug wontfix

Difficulty 4/5 3-5 days Newbie friendliness 25/100

openml/OpenML#1201 · Opened Dec 8, 2023
JSON endpoint can return XML Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

openml/OpenML#1200 · 1 comment · Opened Nov 3, 2023
ElasticSearch user mapping: first name and last name should use a normalizer to allow case-insensitive sort Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

openml/OpenML#1199 · Opened Nov 1, 2023
Cannot edit dataset Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

openml/OpenML#1198 · 1 comment · Opened Aug 30, 2023
Bucket does not exist or is private. Failed to download parquet, fallback on ARFF. Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

openml/OpenML#1197 · 2 comments · 1 reaction · Opened Aug 30, 2023
Same dataset can be uploaded multiple times Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

openml/OpenML#1192 · 1 comment · Opened Jun 15, 2023
Missing error message on blank fields Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

openml/OpenML#1191 · Opened Jun 13, 2023
`parquet_url` incorrectly provided for non-arff formats Open

bug wontfix

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

openml/OpenML#1189 · Opened May 25, 2023
Server error when creating a new task Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

openml/OpenML#1190 · 1 comment · Opened Apr 21, 2023
Provide test datasets where labels are hidden Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

openml/OpenML#1188 · 2 comments · Opened Apr 20, 2023
`Code 215: Database error. Setup search query failed - None` Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

openml/OpenML#1180 · Opened Feb 11, 2023
[Server Error] Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

openml/OpenML#1177 · 1 comment · Opened Jan 17, 2023
Return error code 404 instead of 412 when dataset is not found Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

openml/OpenML#1176 · 1 reaction · Opened Jan 13, 2023
Give back error messages when something with a dataset upload went wrong Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

openml/OpenML#1175 · 1 comment · Opened Jan 2, 2023
Free run sharing Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

openml/OpenML#1166 · Opened Oct 16, 2022
Task splits as parquet files Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

openml/OpenML#1162 · 1 comment · Opened Aug 30, 2022
Trouble uploading datasets to the test server Open

Difficulty 3/5 1-2 days Newbie friendliness 28/100

openml/OpenML#1159 · 5 comments · Opened Jul 21, 2022
Error in doHTTRCall(method, url = url, query = list(api_key = conf$apikey), : ERROR (code = 100) in server response: Function not valid Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

openml/OpenML#1156 · 6 comments · Opened Jun 22, 2022
OpenML API parquet migration - Phase 2 Open

CoreSystem priority: high

Difficulty 5/5 Over a week Newbie friendliness 25/100

openml/OpenML#1154 · 1 comment · Opened Jun 20, 2022
OpenML errors for both creating clustering tasks and runs Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

openml/OpenML#1153 · 1 comment · Opened Jun 17, 2022
Parquet file broken Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

openml/OpenML#1151 · 1 comment · Opened Jun 15, 2022
Tasks should be able to ignore attributes Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

openml/OpenML#1150 · 1 reaction · Opened Jun 3, 2022
Account activation email subject none Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

openml/OpenML#1149 · 2 comments · Opened May 26, 2022

openml/OpenML

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