{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:SD66DN4VU5CCJJGFT77DTV6CQD","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":"37aebc8053ee00cc67918dd954d649215b8c9069c57e291d678b06d2ae6bb746","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2026-06-01T06:43:50Z","title_canon_sha256":"44e0c307f57fbf1032af41f0654d04afedc951da493525b2af4de37f202813b9"},"schema_version":"1.0","source":{"id":"2606.04019","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.04019","created_at":"2026-06-04T00:06:44Z"},{"alias_kind":"arxiv_version","alias_value":"2606.04019v1","created_at":"2026-06-04T00:06:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.04019","created_at":"2026-06-04T00:06:44Z"},{"alias_kind":"pith_short_12","alias_value":"SD66DN4VU5CC","created_at":"2026-06-04T00:06:44Z"},{"alias_kind":"pith_short_16","alias_value":"SD66DN4VU5CCJJGF","created_at":"2026-06-04T00:06:44Z"},{"alias_kind":"pith_short_8","alias_value":"SD66DN4V","created_at":"2026-06-04T00:06:44Z"}],"graph_snapshots":[{"event_id":"sha256:65021a8dcc0796611e8e40748e0b993eb94d87f8abea178c66c0e2950df4fc5c","target":"graph","created_at":"2026-06-04T00:06:44Z","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/2606.04019/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent studies on sensor-language alignment have shown that two-stage frameworks can improve the semantic modeling ability of wearable-sensor human activity recognition (HAR), where SensorLLM-style methods first perform motion-to-language alignment and then fine-tune the model for downstream tasks. However, our experiments reveal a consistent failure mode when the Stage 2 backbone is compressed to a compact model such as TinyLlama: recognition of dynamic activities remains relatively strong, while the discrimination of low-motion static classes such as standing, sitting, and lying degrades sub","authors_text":"Hao Li, Mingrui Zheng, Yasuyuki Tahara, Yuichi Sei","cross_cats":["cs.AI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2026-06-01T06:43:50Z","title":"Gravity-Aware Hierarchical Routing for Lightweight SensorLLM on Human Activity Recognition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.04019","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:edcb69b1323368324fcb4b5b652c2216f612c6dacc424824639deed6e3294287","target":"record","created_at":"2026-06-04T00:06:44Z","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":"37aebc8053ee00cc67918dd954d649215b8c9069c57e291d678b06d2ae6bb746","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2026-06-01T06:43:50Z","title_canon_sha256":"44e0c307f57fbf1032af41f0654d04afedc951da493525b2af4de37f202813b9"},"schema_version":"1.0","source":{"id":"2606.04019","kind":"arxiv","version":1}},"canonical_sha256":"90fde1b795a74424a4c59ffe39d7c280c3d5d2c2029fc37ece6539b1c7ef3a77","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"90fde1b795a74424a4c59ffe39d7c280c3d5d2c2029fc37ece6539b1c7ef3a77","first_computed_at":"2026-06-04T00:06:44.616692Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-04T00:06:44.616692Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rLCFWLeGoQornseX3xyKrp6IGPiDqZd2JlbX8pO0l7sMQ+h6/i+5tpwD0lhfLDgsAOJAiDrrs0S4P1pca+aqDQ==","signature_status":"signed_v1","signed_at":"2026-06-04T00:06:44.617043Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.04019","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:edcb69b1323368324fcb4b5b652c2216f612c6dacc424824639deed6e3294287","sha256:65021a8dcc0796611e8e40748e0b993eb94d87f8abea178c66c0e2950df4fc5c"],"state_sha256":"3d67d461c88fc39931a7a86c7c96f85a8ecbbcfc05686ccb67d0853f71c606cc"}