{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:P4NTZRGMHK3V4QAMQTWNN3UDRR","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":"6d5fc9aea8e10c8ce897dc115bb4d9707503a8662f7468189bb1c42ac066eaa1","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2025-08-11T13:59:22Z","title_canon_sha256":"f47c973f1e41589455dfbe5dc2b8e0043df98b1ea2226ab70f6413925976dd38"},"schema_version":"1.0","source":{"id":"2508.07996","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.07996","created_at":"2026-05-27T01:05:37Z"},{"alias_kind":"arxiv_version","alias_value":"2508.07996v2","created_at":"2026-05-27T01:05:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.07996","created_at":"2026-05-27T01:05:37Z"},{"alias_kind":"pith_short_12","alias_value":"P4NTZRGMHK3V","created_at":"2026-05-27T01:05:37Z"},{"alias_kind":"pith_short_16","alias_value":"P4NTZRGMHK3V4QAM","created_at":"2026-05-27T01:05:37Z"},{"alias_kind":"pith_short_8","alias_value":"P4NTZRGM","created_at":"2026-05-27T01:05:37Z"}],"graph_snapshots":[{"event_id":"sha256:b4e52c2e121e6662da024a715d881375cce6499175b26c2cec1bc86de25ba5a8","target":"graph","created_at":"2026-05-27T01:05:37Z","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/2508.07996/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Group Activity Detection (GAD) involves recognizing social groups and their collective behaviors in videos. Vision Foundation Models (VFMs), like DINOv2, offer excellent features but are pretrained on object-centric data. We find that naively substituting them into existing GAD pipelines actually degrades performance, exposing structured group-aware decoding as the true bottleneck.\n  We introduce ProGraD, a structured relational-reasoning framework for GAD built on top of frozen VFMs. At its core is a lightweight two-layer GroupContext Transformer that explicitly models actor-group association","authors_text":"Alina Roitberg, Chengzheng Yang, Thinesh Thiyakesan Ponbagavathi","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2025-08-11T13:59:22Z","title":"Structured Relational Reasoning for Group Activity Assessment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.07996","kind":"arxiv","version":2},"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:e1a14a60ad945e3d506ef731948a02b42d155cd9a0ff0100fef07352d4bf43fd","target":"record","created_at":"2026-05-27T01:05:37Z","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":"6d5fc9aea8e10c8ce897dc115bb4d9707503a8662f7468189bb1c42ac066eaa1","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2025-08-11T13:59:22Z","title_canon_sha256":"f47c973f1e41589455dfbe5dc2b8e0043df98b1ea2226ab70f6413925976dd38"},"schema_version":"1.0","source":{"id":"2508.07996","kind":"arxiv","version":2}},"canonical_sha256":"7f1b3cc4cc3ab75e400c84ecd6ee838c53a2188bd8594b4683874404bc0e5bac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7f1b3cc4cc3ab75e400c84ecd6ee838c53a2188bd8594b4683874404bc0e5bac","first_computed_at":"2026-05-27T01:05:37.321754Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-27T01:05:37.321754Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4B8td1gm79848a3LC/soJKj8MqOootXdb/KpOJg5dMG5UqJ1XC0KVWqxrf2+rZCcRRKu2C+bd8KDdm53G2n3AA==","signature_status":"signed_v1","signed_at":"2026-05-27T01:05:37.322492Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.07996","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e1a14a60ad945e3d506ef731948a02b42d155cd9a0ff0100fef07352d4bf43fd","sha256:b4e52c2e121e6662da024a715d881375cce6499175b26c2cec1bc86de25ba5a8"],"state_sha256":"19f7ca0abd2bba9d27ef73ed50e5338a9efd87a4037c4863fa639e2680066a42"}