Pith Number

pith:TFM7YYNY

pith:2026:TFM7YYNYXO7KIMT65XANNJJYPQ

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Toward Communication-Efficient Space Data Centers: Bottlenecks, Architectures, and New Paradigms

Jinbo Hou, Kezhi Wang, Minghao Sun, Xiaoli Chu, Zehui Chen

Space data centers reduce uplink pressure by transmitting compact semantic representations instead of raw data for AI tasks.

arxiv:2605.12681 v1 · 2026-05-12 · cs.NI

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\pithnumber{TFM7YYNYXO7KIMT65XANNJJYPQ}

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2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

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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

By transmitting compact, task-relevant semantic representations instead of raw data, uplink pressure can be substantially reduced. The feasibility of communication-efficient orbital AI infrastructures is demonstrated through the evaluation of a multi-layer heterogeneous SDC framework consisting of relay satellites and orbital computing nodes operating under coupled energy and thermal constraints.

C2weakest assumption

That semantic representations can be generated and transmitted without losing critical task-relevant information needed for foundation model training and large-scale AI services, while the multi-layer framework can operate feasibly under real coupled energy and thermal constraints.

C3one line summary

Semantic communication in a multi-layer heterogeneous space data center framework can substantially reduce uplink pressure for orbital AI by sending compact representations rather than raw data.

References

15 extracted · 15 resolved · 0 Pith anchors

[1] Ag¨ uera y Arcas, T 2025

[2] Why we should train ai in space, 2024

[3] Towards space-based computing infrastructure net- work: Development trends, network architecture, challenges analysis, and key technologies 2025

[4] Analysis and design of a solar rectenna, 2010

[5] 2024 united states data center energy usage report, 2024

Receipt and verification

First computed	2026-05-18T03:09:49.996695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9959fc61b8bbbea4327eedc0d6a5387c3f71fce69fbe4beaef19b6a9d9c01c10

Aliases

arxiv: 2605.12681 · arxiv_version: 2605.12681v1 · doi: 10.48550/arxiv.2605.12681 · pith_short_12: TFM7YYNYXO7K · pith_short_16: TFM7YYNYXO7KIMT6 · pith_short_8: TFM7YYNY

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/TFM7YYNYXO7KIMT65XANNJJYPQ \
  | 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: 9959fc61b8bbbea4327eedc0d6a5387c3f71fce69fbe4beaef19b6a9d9c01c10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "234f4f4ce4b55eb27b71c56b6e262a512ac2079e0338b1cf91a841082193628d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2026-05-12T19:32:08Z",
    "title_canon_sha256": "d59438ff9a5f13c07285e16f4b067634240c0f47b90105ddb70bc913e337fb50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.12681",
    "kind": "arxiv",
    "version": 1
  }
}