Add John Hewitt (Columbia University)

[github-actions]

Summary

Adding faculty entry for John Hewitt at Columbia University.

Submitted by @john-hewitt via CSRankings form.

Closes #12533

Entry

John Hewitt,Columbia University,https://www.cs.columbia.edu/~johnhew/,7C27kVMAAAAJ,0000-0003-1320-6633

[github-actions]

Submitted by @john-hewitt — you'll receive notifications for CI and review updates on this PR.

[github-actions]

ℹ️ PR created by bot: @github-actions[bot]
ℹ️ PR title is descriptive: 'Add John Hewitt (Columbia University)'
ℹ️ All checklist items are checked.

1. Validating John Hewitt
2. ℹ️ Checking homepage: https://www.cs.columbia.edu/~johnhew/
3. ℹ️ Name (John Hewitt) found on home page.
4. ℹ️ Affiliation (Columbia University) found on home page.
5. ℹ️ Columbia University is on the list of known institutions (institutions.csv).
6. ℹ️ Entry in the correct file.
7. ℹ️ Google Scholar ID (7C27kVMAAAAJ) passed validity checks.
8. ℹ️ ORCID (0000-0003-1320-6633) has valid format.
   ℹ️ All new entries are for a single institution: Columbia University

The analysis below was generated by AI and may not be accurate:

1. Update for John Hewitt (John Hewitt) is valid: John Hewitt is listed as an Assistant Professor in the Department of Computer Science at Columbia University, according to his homepage (https://www.cs.columbia.edu/~johnhew/). The homepage is hosted on the official Columbia CS domain, and his title and affiliation are clearly stated. His Google Scholar ID (7C27kVMAAAAJ) matches his profile, which lists Columbia University as his affiliation. DBLP entry 'John Hewitt' matches his publication record. There is no evidence of a split appointment with industry, and Columbia CS faculty are eligible to solely advise PhD students in Computer Science. All inclusion criteria are met.

✅ All validity checks passed.