Pith Number

pith:OEDWCNQO

pith:2012:OEDWCNQO2J467CNRDJ2ZHJ6X2M

not attested not anchored not stored refs resolved

emcee: The MCMC Hammer

Daniel Foreman-Mackey, David W. Hogg, Dustin Lang, Jonathan Goodman

The emcee package implements an affine-invariant ensemble sampler for MCMC that requires tuning only one or two parameters.

arxiv:1202.3665 v4 · 2012-02-16 · astro-ph.IM · physics.comp-ph · stat.CO

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\usepackage{pith}
\pithnumber{OEDWCNQO2J467CNRDJ2ZHJ6X2M}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

One major advantage of the algorithm is that it requires hand-tuning of only 1 or 2 parameters compared to ∼N² for a traditional algorithm in an N-dimensional parameter space.

C2weakest assumption

The ensemble sampler converges reliably to the target posterior for the user's specific likelihood function and that the computational cost of evaluating the likelihood many times is feasible.

C3one line summary

emcee delivers a stable Python implementation of the affine-invariant ensemble MCMC algorithm that requires minimal hand-tuning and supports easy parallelization.

References

28 extracted · 28 resolved · 1 Pith anchors

[1] Akeret, J., Seehars, S., Amara, A., Refregier, A., & Csillaghy, A. 201 2, arXiv:1212.1721

[2] 2012, ApJ, 753, 148 2012

[3] Bovy, J., Rix, H.-W., Hogg, D. W., et al. 2012, ApJ, 755, 115 – 13 – 2012

[4] Bovy, J., Allende Prieto, C., Beers, T. C., et al. 2012, ApJ, 759, 131 2012

[5] B., S´ anchez-Janssen, R., Labb´ e, I., et al 2012 · arXiv:0912.2380

Formal links

2 machine-checked theorem links

Cited by

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Receipt and verification

First computed	2026-05-18T04:42:33.581603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

710761360ed279ef89b11a7593a7d7d3108cee5e051337eaa6fd80d1b0b1099a

Aliases

arxiv: 1202.3665 · arxiv_version: 1202.3665v4 · doi: 10.48550/arxiv.1202.3665 · pith_short_12: OEDWCNQO2J46 · pith_short_16: OEDWCNQO2J467CNR · pith_short_8: OEDWCNQO

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/OEDWCNQO2J467CNRDJ2ZHJ6X2M \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 710761360ed279ef89b11a7593a7d7d3108cee5e051337eaa6fd80d1b0b1099a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "328fde1d9a36f3de908c8d1b810df5e65c3f321166ed7e9fcd4f4ed04bdd52f9",
    "cross_cats_sorted": [
      "physics.comp-ph",
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-02-16T20:41:19Z",
    "title_canon_sha256": "ab88c83ddd28f718facefee3e06386a3bbeea91239cf708d38e2ed10012fdc98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.3665",
    "kind": "arxiv",
    "version": 4
  }
}