{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:A3KFYMMTSWZI6ZAL6BB2MWDV5C","short_pith_number":"pith:A3KFYMMT","schema_version":"1.0","canonical_sha256":"06d45c319395b28f640bf043a65875e8a3c0938c6272700f3d645c6bb18c580c","source":{"kind":"arxiv","id":"2607.08643","version":1},"attestation_state":"computed","paper":{"title":"BiSCo-LLM: Lookup-Free Binary Spherical Coding for Extreme Low-Bit Large Language Model Compression","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.LG","authors_text":"Chuangyi Li, Jian Cheng, Peisong Wang, Pengcheng Xie, Yiwu Yao, Yuanteng Chen, Yuantian Shao, Zhihui Wei, Zhilei Liu","submitted_at":"2026-07-09T16:17:10Z","abstract_excerpt":"Large language models (LLMs) are increasingly constrained by memory capacity, weight bandwidth, and checkpoint storage during deployment. Existing low-bit compression methods mainly follow two directions. Scalar or group-wise quantization is simple and compatible with efficient low-precision kernels, but its representation capacity becomes limited when the target budget approaches 2 bits per weight. Vector-quantized weight compression provides a richer block-level representation, but usually introduces explicit codebooks, index lookup, and additional storage accounting. This paper presents BiS"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2607.08643","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.LG","submitted_at":"2026-07-09T16:17:10Z","cross_cats_sorted":[],"title_canon_sha256":"5b8e3464f11b614c630916765240a456ab7afa4cd707ee9c97b4223ca8c616d8","abstract_canon_sha256":"3925e09d228fc6e74ffb5570ce46867b3b5ff914b204ceb79551813c918d50d8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-10T01:19:56.364519Z","signature_b64":"vquGeHqZXG4NBby963eSAHXa7EEtIDi/Niv0KA+aWdvbvrgRTa7CGufnm9lNn2fcYjjqQdwUXigdOsxfnSeXCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"06d45c319395b28f640bf043a65875e8a3c0938c6272700f3d645c6bb18c580c","last_reissued_at":"2026-07-10T01:19:56.364072Z","signature_status":"signed_v1","first_computed_at":"2026-07-10T01:19:56.364072Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"BiSCo-LLM: Lookup-Free Binary Spherical Coding for Extreme Low-Bit Large Language Model Compression","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.LG","authors_text":"Chuangyi Li, Jian Cheng, Peisong Wang, Pengcheng Xie, Yiwu Yao, Yuanteng Chen, Yuantian Shao, Zhihui Wei, Zhilei Liu","submitted_at":"2026-07-09T16:17:10Z","abstract_excerpt":"Large language models (LLMs) are increasingly constrained by memory capacity, weight bandwidth, and checkpoint storage during deployment. Existing low-bit compression methods mainly follow two directions. Scalar or group-wise quantization is simple and compatible with efficient low-precision kernels, but its representation capacity becomes limited when the target budget approaches 2 bits per weight. Vector-quantized weight compression provides a richer block-level representation, but usually introduces explicit codebooks, index lookup, and additional storage accounting. This paper presents BiS"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.08643","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.08643/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2607.08643","created_at":"2026-07-10T01:19:56.364133+00:00"},{"alias_kind":"arxiv_version","alias_value":"2607.08643v1","created_at":"2026-07-10T01:19:56.364133+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.08643","created_at":"2026-07-10T01:19:56.364133+00:00"},{"alias_kind":"pith_short_12","alias_value":"A3KFYMMTSWZI","created_at":"2026-07-10T01:19:56.364133+00:00"},{"alias_kind":"pith_short_16","alias_value":"A3KFYMMTSWZI6ZAL","created_at":"2026-07-10T01:19:56.364133+00:00"},{"alias_kind":"pith_short_8","alias_value":"A3KFYMMT","created_at":"2026-07-10T01:19:56.364133+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/A3KFYMMTSWZI6ZAL6BB2MWDV5C","json":"https://pith.science/pith/A3KFYMMTSWZI6ZAL6BB2MWDV5C.json","graph_json":"https://pith.science/api/pith-number/A3KFYMMTSWZI6ZAL6BB2MWDV5C/graph.json","events_json":"https://pith.science/api/pith-number/A3KFYMMTSWZI6ZAL6BB2MWDV5C/events.json","paper":"https://pith.science/paper/A3KFYMMT"},"agent_actions":{"view_html":"https://pith.science/pith/A3KFYMMTSWZI6ZAL6BB2MWDV5C","download_json":"https://pith.science/pith/A3KFYMMTSWZI6ZAL6BB2MWDV5C.json","view_paper":"https://pith.science/paper/A3KFYMMT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2607.08643&json=true","fetch_graph":"https://pith.science/api/pith-number/A3KFYMMTSWZI6ZAL6BB2MWDV5C/graph.json","fetch_events":"https://pith.science/api/pith-number/A3KFYMMTSWZI6ZAL6BB2MWDV5C/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/A3KFYMMTSWZI6ZAL6BB2MWDV5C/action/timestamp_anchor","attest_storage":"https://pith.science/pith/A3KFYMMTSWZI6ZAL6BB2MWDV5C/action/storage_attestation","attest_author":"https://pith.science/pith/A3KFYMMTSWZI6ZAL6BB2MWDV5C/action/author_attestation","sign_citation":"https://pith.science/pith/A3KFYMMTSWZI6ZAL6BB2MWDV5C/action/citation_signature","submit_replication":"https://pith.science/pith/A3KFYMMTSWZI6ZAL6BB2MWDV5C/action/replication_record"}},"created_at":"2026-07-10T01:19:56.364133+00:00","updated_at":"2026-07-10T01:19:56.364133+00:00"}