Pith Number

pith:WPJTWMH3

pith:2020:WPJTWMH3XTJENFYXGQC7W65ZSN

not attested not anchored not stored refs pending

Learning to Expand: Reinforced Pseudo-relevance Feedback Selection for Information-seeking Conversations

Cen Chen, Chengyu Wang, Feng Ji, Haojie Pan, Jun Huang, Liu Yang, Minghui Qiu

arxiv:2011.12771 v2 · 2020-11-25 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WPJTWMH3XTJENFYXGQC7W65ZSN}

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	2026-07-05T05:12:25.605725Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3d33b30fbbcd24697173405fb7bb9935fc63d8da24ec42045d853c35a39c93b

Aliases

arxiv: 2011.12771 · arxiv_version: 2011.12771v2 · doi: 10.48550/arxiv.2011.12771 · pith_short_12: WPJTWMH3XTJE · pith_short_16: WPJTWMH3XTJENFYX · pith_short_8: WPJTWMH3

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/WPJTWMH3XTJENFYXGQC7W65ZSN \
  | 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: b3d33b30fbbcd24697173405fb7bb9935fc63d8da24ec42045d853c35a39c93b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87784ed6be5092c8d30f065f61c3ffbefc22a394154cda430b75dc49e913ed6e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2020-11-25T14:33:18Z",
    "title_canon_sha256": "94d66173ea74b659da2c5badcf4ccd9ea4be33aa50b475b383e9575387497902"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.12771",
    "kind": "arxiv",
    "version": 2
  }
}