Length and template
No NeurIPS-style hard cap, but past ~35 pages (including appendices) review slows; past ~50 needs a cover-letter justification or desk reject.
Use the unmodified official JMLR journal template; submit a clean LaTeX PDF numbered from page 1.
Submission process
Submit via JMLR’s system plus a cover letter suggesting at least three conflict-free action editors. Journal review—not a conference double-blind pack.
Conference extensions must spell out the delta. After acceptance, fill heading, short title, and editor fields as in the example.
FAQ
- Extend a conference paper?
- Yes with a clear delta—resubmissions of the same core are rejected.
- How do I suggest action editors?
- Name at least three conflict-free AEs aligned with your subfield.
- Reuse a conference template?
- No—use the official JMLR journal shell only.