Pith Number

pith:3BLLAS4A

pith:2018:3BLLAS4A3TUTX5NV2TTRIYT4EA

not attested not anchored not stored refs pending

Automatic Identification of Ineffective Online Student Questions in Computing Education

April Galyardt, Bradley Barnes, Ewan Wright, Qiang Hao, Robert Maribe Branch

arxiv:1807.07173 v3 · 2018-07-18 · cs.HC · cs.LG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3BLLAS4A3TUTX5NV2TTRIYT4EA}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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.

Receipt and verification

First computed	2026-05-17T23:51:44.023056Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d856b04b80dce93bf5b5d4e714627c2034391f2fea8f988492c534ef88b10ed7

Aliases

arxiv: 1807.07173 · arxiv_version: 1807.07173v3 · doi: 10.48550/arxiv.1807.07173 · pith_short_12: 3BLLAS4A3TUT · pith_short_16: 3BLLAS4A3TUTX5NV · pith_short_8: 3BLLAS4A

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/3BLLAS4A3TUTX5NV2TTRIYT4EA \
  | 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: d856b04b80dce93bf5b5d4e714627c2034391f2fea8f988492c534ef88b10ed7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c027bab0564c4620c6d3b9401939b308e625ba41f43b290324aa28c98feed01a",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2018-07-18T22:21:19Z",
    "title_canon_sha256": "450215af18a1a0e3959f9f2e8f07a2f377d60db1a85bc62282cfb1fbabbb0a21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07173",
    "kind": "arxiv",
    "version": 3
  }
}