{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:2GMF6ITKWZYPMG2RELEQT42E3W","short_pith_number":"pith:2GMF6ITK","canonical_record":{"source":{"id":"2507.22465","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-07-30T08:11:18Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"3453c7c47445e92483e6a10ee485afd9164aee782a3b2f0b7957b4a52c7a3bb7","abstract_canon_sha256":"a61e00f8eec2de6d6d0f361798e58871ebdaee156fd5427b504c3c10727290c3"},"schema_version":"1.0"},"canonical_sha256":"d1985f226ab670f61b5122c909f344ddbdda3de99675e8a9a94805d925ca8b53","source":{"kind":"arxiv","id":"2507.22465","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.22465","created_at":"2026-07-05T11:45:42Z"},{"alias_kind":"arxiv_version","alias_value":"2507.22465v1","created_at":"2026-07-05T11:45:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.22465","created_at":"2026-07-05T11:45:42Z"},{"alias_kind":"pith_short_12","alias_value":"2GMF6ITKWZYP","created_at":"2026-07-05T11:45:42Z"},{"alias_kind":"pith_short_16","alias_value":"2GMF6ITKWZYPMG2R","created_at":"2026-07-05T11:45:42Z"},{"alias_kind":"pith_short_8","alias_value":"2GMF6ITK","created_at":"2026-07-05T11:45:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:2GMF6ITKWZYPMG2RELEQT42E3W","target":"record","payload":{"canonical_record":{"source":{"id":"2507.22465","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-07-30T08:11:18Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"3453c7c47445e92483e6a10ee485afd9164aee782a3b2f0b7957b4a52c7a3bb7","abstract_canon_sha256":"a61e00f8eec2de6d6d0f361798e58871ebdaee156fd5427b504c3c10727290c3"},"schema_version":"1.0"},"canonical_sha256":"d1985f226ab670f61b5122c909f344ddbdda3de99675e8a9a94805d925ca8b53","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:45:42.875384Z","signature_b64":"GE5sy2XeO4IKKK9VgmheYwakZePMxfKsfYoNcVp5b5MmSx5jV0cBcaDb+jJtFMWbUTI7BZTpy4IlLuDINvASDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d1985f226ab670f61b5122c909f344ddbdda3de99675e8a9a94805d925ca8b53","last_reissued_at":"2026-07-05T11:45:42.874891Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:45:42.874891Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.22465","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":"2026-07-05T11:45:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5MUZjpE2EyUQAM4AOy77d7JwmkNHrrws1YC9TIahTsY+kE0iBW8fxfyOydUx1pSTnOciwfiRvXRnTQ2LyZHtCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T22:47:02.887018Z"},"content_sha256":"9cf3927cd4e1d348b39346b5d79da608fc7ab64eab87e067ad7063815b17a4ed","schema_version":"1.0","event_id":"sha256:9cf3927cd4e1d348b39346b5d79da608fc7ab64eab87e067ad7063815b17a4ed"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:2GMF6ITKWZYPMG2RELEQT42E3W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Shallow Features Matter: Hierarchical Memory with Heterogeneous Interaction for Unsupervised Video Object Segmentation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CV","authors_text":"He Songcheng, Li Wanyun, Li Xiaoqiang, Zhang Wei, Zheng Xiangyu","submitted_at":"2025-07-30T08:11:18Z","abstract_excerpt":"Unsupervised Video Object Segmentation (UVOS) aims to predict pixel-level masks for the most salient objects in videos without any prior annotations. While memory mechanisms have been proven critical in various video segmentation paradigms, their application in UVOS yield only marginal performance gains despite sophisticated design. Our analysis reveals a simple but fundamental flaw in existing methods: over-reliance on memorizing high-level semantic features. UVOS inherently suffers from the deficiency of lacking fine-grained information due to the absence of pixel-level prior knowledge. Cons"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.22465","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/2507.22465/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":"2026-07-05T11:45:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BzBjC48l2scY/yZE1U4X6DvsS2C0KQxh6xEQQXkuks0iTTO1JiUy2XgJF2Sr9ehOWNvZ6Yrd7oYRDV2GiJxICw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T22:47:02.887787Z"},"content_sha256":"0cec58489ed919c2842db30ea7fd578358e727b1ad6e49d904826bf0a6bd27e7","schema_version":"1.0","event_id":"sha256:0cec58489ed919c2842db30ea7fd578358e727b1ad6e49d904826bf0a6bd27e7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2GMF6ITKWZYPMG2RELEQT42E3W/bundle.json","state_url":"https://pith.science/pith/2GMF6ITKWZYPMG2RELEQT42E3W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2GMF6ITKWZYPMG2RELEQT42E3W/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":"2026-08-06T22:47:02Z","links":{"resolver":"https://pith.science/pith/2GMF6ITKWZYPMG2RELEQT42E3W","bundle":"https://pith.science/pith/2GMF6ITKWZYPMG2RELEQT42E3W/bundle.json","state":"https://pith.science/pith/2GMF6ITKWZYPMG2RELEQT42E3W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2GMF6ITKWZYPMG2RELEQT42E3W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:2GMF6ITKWZYPMG2RELEQT42E3W","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":"a61e00f8eec2de6d6d0f361798e58871ebdaee156fd5427b504c3c10727290c3","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-07-30T08:11:18Z","title_canon_sha256":"3453c7c47445e92483e6a10ee485afd9164aee782a3b2f0b7957b4a52c7a3bb7"},"schema_version":"1.0","source":{"id":"2507.22465","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.22465","created_at":"2026-07-05T11:45:42Z"},{"alias_kind":"arxiv_version","alias_value":"2507.22465v1","created_at":"2026-07-05T11:45:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.22465","created_at":"2026-07-05T11:45:42Z"},{"alias_kind":"pith_short_12","alias_value":"2GMF6ITKWZYP","created_at":"2026-07-05T11:45:42Z"},{"alias_kind":"pith_short_16","alias_value":"2GMF6ITKWZYPMG2R","created_at":"2026-07-05T11:45:42Z"},{"alias_kind":"pith_short_8","alias_value":"2GMF6ITK","created_at":"2026-07-05T11:45:42Z"}],"graph_snapshots":[{"event_id":"sha256:0cec58489ed919c2842db30ea7fd578358e727b1ad6e49d904826bf0a6bd27e7","target":"graph","created_at":"2026-07-05T11:45:42Z","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/2507.22465/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Unsupervised Video Object Segmentation (UVOS) aims to predict pixel-level masks for the most salient objects in videos without any prior annotations. While memory mechanisms have been proven critical in various video segmentation paradigms, their application in UVOS yield only marginal performance gains despite sophisticated design. Our analysis reveals a simple but fundamental flaw in existing methods: over-reliance on memorizing high-level semantic features. UVOS inherently suffers from the deficiency of lacking fine-grained information due to the absence of pixel-level prior knowledge. Cons","authors_text":"He Songcheng, Li Wanyun, Li Xiaoqiang, Zhang Wei, Zheng Xiangyu","cross_cats":["cs.AI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-07-30T08:11:18Z","title":"Shallow Features Matter: Hierarchical Memory with Heterogeneous Interaction for Unsupervised Video Object Segmentation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.22465","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":"sha256:9cf3927cd4e1d348b39346b5d79da608fc7ab64eab87e067ad7063815b17a4ed","target":"record","created_at":"2026-07-05T11:45:42Z","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":"a61e00f8eec2de6d6d0f361798e58871ebdaee156fd5427b504c3c10727290c3","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2025-07-30T08:11:18Z","title_canon_sha256":"3453c7c47445e92483e6a10ee485afd9164aee782a3b2f0b7957b4a52c7a3bb7"},"schema_version":"1.0","source":{"id":"2507.22465","kind":"arxiv","version":1}},"canonical_sha256":"d1985f226ab670f61b5122c909f344ddbdda3de99675e8a9a94805d925ca8b53","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d1985f226ab670f61b5122c909f344ddbdda3de99675e8a9a94805d925ca8b53","first_computed_at":"2026-07-05T11:45:42.874891Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:45:42.874891Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GE5sy2XeO4IKKK9VgmheYwakZePMxfKsfYoNcVp5b5MmSx5jV0cBcaDb+jJtFMWbUTI7BZTpy4IlLuDINvASDA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:45:42.875384Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.22465","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9cf3927cd4e1d348b39346b5d79da608fc7ab64eab87e067ad7063815b17a4ed","sha256:0cec58489ed919c2842db30ea7fd578358e727b1ad6e49d904826bf0a6bd27e7"],"state_sha256":"13a3546e3d2497c298323294955fe982f9e6900b3e0edd8038e1a1b4a8433eea"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ltoOGGO1yPZv8se7Wn5EkCvy8n66tpzXhsM4egpdAe26fqP3hwkcyKYrGh6q0qcg1O9bjjIZi5eKdtPYmCOcBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T22:47:02.891128Z","bundle_sha256":"b1b851ea5dcf90e8d49a8a2a96d70b53d8f211f34dbbdf2468b681525b28c5cd"}}