{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:FPC3SUOAIIJ4KTCK3ZD2CUJ3LL","short_pith_number":"pith:FPC3SUOA","canonical_record":{"source":{"id":"2607.16955","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2026-07-18T20:16:26Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"8b95e244af2f4e6f470b07bfefad40f541ad66bc9a2a0044dfa7543743c8d507","abstract_canon_sha256":"8a231f2700c99fb39f877a5e3006cf7da1d3b7b34383c5b3b37ff1a915c01866"},"schema_version":"1.0"},"canonical_sha256":"2bc5b951c04213c54c4ade47a1513b5af102979de323e92127ccf383b031ba19","source":{"kind":"arxiv","id":"2607.16955","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.16955","created_at":"2026-07-21T01:21:07Z"},{"alias_kind":"arxiv_version","alias_value":"2607.16955v1","created_at":"2026-07-21T01:21:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.16955","created_at":"2026-07-21T01:21:07Z"},{"alias_kind":"pith_short_12","alias_value":"FPC3SUOAIIJ4","created_at":"2026-07-21T01:21:07Z"},{"alias_kind":"pith_short_16","alias_value":"FPC3SUOAIIJ4KTCK","created_at":"2026-07-21T01:21:07Z"},{"alias_kind":"pith_short_8","alias_value":"FPC3SUOA","created_at":"2026-07-21T01:21:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:FPC3SUOAIIJ4KTCK3ZD2CUJ3LL","target":"record","payload":{"canonical_record":{"source":{"id":"2607.16955","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2026-07-18T20:16:26Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"8b95e244af2f4e6f470b07bfefad40f541ad66bc9a2a0044dfa7543743c8d507","abstract_canon_sha256":"8a231f2700c99fb39f877a5e3006cf7da1d3b7b34383c5b3b37ff1a915c01866"},"schema_version":"1.0"},"canonical_sha256":"2bc5b951c04213c54c4ade47a1513b5af102979de323e92127ccf383b031ba19","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-21T01:21:07.993397Z","signature_b64":"/UPfZbKWjaFf02w5Mijr4l3sQslqwa9pVCNlZfWyGhDPQavRGI/lj2u97cM4JjfRuihLiVzA0PI/5LftejlIAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2bc5b951c04213c54c4ade47a1513b5af102979de323e92127ccf383b031ba19","last_reissued_at":"2026-07-21T01:21:07.992564Z","signature_status":"signed_v1","first_computed_at":"2026-07-21T01:21:07.992564Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.16955","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-21T01:21:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bmALcdXh4N1mXNlddcON9FtFgFgh7qiGnjcB0jIp45hswhYQ4W4zpA5JEm55j6MhAo4AUJTILgcDVh9ZaREJDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T22:05:10.488022Z"},"content_sha256":"42c8b378a50174c4962433890631eac4e52496f906cde0e172bad799fc569564","schema_version":"1.0","event_id":"sha256:42c8b378a50174c4962433890631eac4e52496f906cde0e172bad799fc569564"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:FPC3SUOAIIJ4KTCK3ZD2CUJ3LL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CADENCE: Closing the Reasoning Gap via Coverage-Adaptive On-Policy Distillation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.LG","authors_text":"Satyam Kumar, Saurabh Jha","submitted_at":"2026-07-18T20:16:26Z","abstract_excerpt":"On-policy knowledge distillation transfers reasoning from large teachers to compact students, but existing approaches suffer three compounding failure modes: (i) cold-start collapse, where a fresh student assigns near-zero mass to teacher-preferred tokens; (ii) state-agnostic divergence scheduling, where time-only forward/reverse-KL interpolation ignores the student's coverage state; and (iii) binary reward sparsity, where pass/fail signals discard information from partially correct traces.\n  We present CADENCE, a unified framework with a targeted fix for each. Its DRIFT mechanism schedules a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.16955","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/2607.16955/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-21T01:21:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7B2NZ1fIb3/fxS2MGlpkMD8t3Wm0msjj+9M8NK+m71dHUkxo5Ad2MRGnlvqejafGOTzBTiFdaMScI0wpiVnNCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T22:05:10.488572Z"},"content_sha256":"7875a657587d2153989d9c5328da4bad580d388a35f652bb0042423089817614","schema_version":"1.0","event_id":"sha256:7875a657587d2153989d9c5328da4bad580d388a35f652bb0042423089817614"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FPC3SUOAIIJ4KTCK3ZD2CUJ3LL/bundle.json","state_url":"https://pith.science/pith/FPC3SUOAIIJ4KTCK3ZD2CUJ3LL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FPC3SUOAIIJ4KTCK3ZD2CUJ3LL/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-03T22:05:10Z","links":{"resolver":"https://pith.science/pith/FPC3SUOAIIJ4KTCK3ZD2CUJ3LL","bundle":"https://pith.science/pith/FPC3SUOAIIJ4KTCK3ZD2CUJ3LL/bundle.json","state":"https://pith.science/pith/FPC3SUOAIIJ4KTCK3ZD2CUJ3LL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FPC3SUOAIIJ4KTCK3ZD2CUJ3LL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:FPC3SUOAIIJ4KTCK3ZD2CUJ3LL","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"8a231f2700c99fb39f877a5e3006cf7da1d3b7b34383c5b3b37ff1a915c01866","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2026-07-18T20:16:26Z","title_canon_sha256":"8b95e244af2f4e6f470b07bfefad40f541ad66bc9a2a0044dfa7543743c8d507"},"schema_version":"1.0","source":{"id":"2607.16955","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.16955","created_at":"2026-07-21T01:21:07Z"},{"alias_kind":"arxiv_version","alias_value":"2607.16955v1","created_at":"2026-07-21T01:21:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.16955","created_at":"2026-07-21T01:21:07Z"},{"alias_kind":"pith_short_12","alias_value":"FPC3SUOAIIJ4","created_at":"2026-07-21T01:21:07Z"},{"alias_kind":"pith_short_16","alias_value":"FPC3SUOAIIJ4KTCK","created_at":"2026-07-21T01:21:07Z"},{"alias_kind":"pith_short_8","alias_value":"FPC3SUOA","created_at":"2026-07-21T01:21:07Z"}],"graph_snapshots":[{"event_id":"sha256:7875a657587d2153989d9c5328da4bad580d388a35f652bb0042423089817614","target":"graph","created_at":"2026-07-21T01:21:07Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2607.16955/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"On-policy knowledge distillation transfers reasoning from large teachers to compact students, but existing approaches suffer three compounding failure modes: (i) cold-start collapse, where a fresh student assigns near-zero mass to teacher-preferred tokens; (ii) state-agnostic divergence scheduling, where time-only forward/reverse-KL interpolation ignores the student's coverage state; and (iii) binary reward sparsity, where pass/fail signals discard information from partially correct traces.\n  We present CADENCE, a unified framework with a targeted fix for each. Its DRIFT mechanism schedules a ","authors_text":"Satyam Kumar, Saurabh Jha","cross_cats":["cs.AI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2026-07-18T20:16:26Z","title":"CADENCE: Closing the Reasoning Gap via Coverage-Adaptive On-Policy Distillation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.16955","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:42c8b378a50174c4962433890631eac4e52496f906cde0e172bad799fc569564","target":"record","created_at":"2026-07-21T01:21:07Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"8a231f2700c99fb39f877a5e3006cf7da1d3b7b34383c5b3b37ff1a915c01866","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2026-07-18T20:16:26Z","title_canon_sha256":"8b95e244af2f4e6f470b07bfefad40f541ad66bc9a2a0044dfa7543743c8d507"},"schema_version":"1.0","source":{"id":"2607.16955","kind":"arxiv","version":1}},"canonical_sha256":"2bc5b951c04213c54c4ade47a1513b5af102979de323e92127ccf383b031ba19","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2bc5b951c04213c54c4ade47a1513b5af102979de323e92127ccf383b031ba19","first_computed_at":"2026-07-21T01:21:07.992564Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-21T01:21:07.992564Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/UPfZbKWjaFf02w5Mijr4l3sQslqwa9pVCNlZfWyGhDPQavRGI/lj2u97cM4JjfRuihLiVzA0PI/5LftejlIAA==","signature_status":"signed_v1","signed_at":"2026-07-21T01:21:07.993397Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.16955","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:42c8b378a50174c4962433890631eac4e52496f906cde0e172bad799fc569564","sha256:7875a657587d2153989d9c5328da4bad580d388a35f652bb0042423089817614"],"state_sha256":"a4575dcb2d2ceb9ea82c2653fd4b78139684e8f31e6774d53516b50acf53c866"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GR7xYBhMihCFJdaCkILFOjwG4Dx8b7ss4PyMPEIb9hifNxtya9U8HKogHgKduj1t7gLuz7KjY4Fo0rxZ5fOdAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T22:05:10.491968Z","bundle_sha256":"805a62cb170868349018ff6ac775b7f0407eba12949e4c7ba2b84b911b23e369"}}