{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:SE3NB5U7D66RHZTJ7ASKSRMKBI","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":"3dce2ec45c0fc6f4a840a413434e2bb2ecb42a44e8fa8b2ad535bea5c489e323","cross_cats_sorted":["cs.CV","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2011-04-22T02:27:45Z","title_canon_sha256":"fa2ef822a70bcd2d133585850e17664b4da8652e34adaf77d939a641e0b7a82a"},"schema_version":"1.0","source":{"id":"1104.4376","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.4376","created_at":"2026-05-18T04:23:34Z"},{"alias_kind":"arxiv_version","alias_value":"1104.4376v1","created_at":"2026-05-18T04:23:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.4376","created_at":"2026-05-18T04:23:34Z"},{"alias_kind":"pith_short_12","alias_value":"SE3NB5U7D66R","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_16","alias_value":"SE3NB5U7D66RHZTJ","created_at":"2026-05-18T12:26:41Z"},{"alias_kind":"pith_short_8","alias_value":"SE3NB5U7","created_at":"2026-05-18T12:26:41Z"}],"graph_snapshots":[{"event_id":"sha256:998d68e4699a5a33114f7ae6b7070700f057ba98af95b9205b06e7c3394b88d4","target":"graph","created_at":"2026-05-18T04:23:34Z","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"},"paper":{"abstract_excerpt":"In conventional target tracking systems, human operators use the estimated target tracks to make higher level inference of the target behaviour/intent. This paper develops syntactic filtering algorithms that assist human operators by extracting spatial patterns from target tracks to identify suspicious/anomalous spatial trajectories. The targets' spatial trajectories are modeled by a stochastic context free grammar (SCFG) and a switched mode state space model. Bayesian filtering algorithms for stochastic context free grammars are presented for extracting the syntactic structure and illustrated","authors_text":"Alex Wang, Bhashyam Balaji, Vikram Krishnamurthy","cross_cats":["cs.CV","cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2011-04-22T02:27:45Z","title":"Intent Inference and Syntactic Tracking with GMTI Measurements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.4376","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":"sha256:65d2068feb2e61a091a1527c095ffc784e1974203e546b85c11352ec53b15fd6","target":"record","created_at":"2026-05-18T04:23:34Z","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":"3dce2ec45c0fc6f4a840a413434e2bb2ecb42a44e8fa8b2ad535bea5c489e323","cross_cats_sorted":["cs.CV","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ME","submitted_at":"2011-04-22T02:27:45Z","title_canon_sha256":"fa2ef822a70bcd2d133585850e17664b4da8652e34adaf77d939a641e0b7a82a"},"schema_version":"1.0","source":{"id":"1104.4376","kind":"arxiv","version":1}},"canonical_sha256":"9136d0f69f1fbd13e669f824a9458a0a28572090e4a3584c126e9da3dadc56b0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9136d0f69f1fbd13e669f824a9458a0a28572090e4a3584c126e9da3dadc56b0","first_computed_at":"2026-05-18T04:23:34.763405Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:23:34.763405Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FTsauaWluzKc5Hc+TA6ZF6Qmr3ul+AUzzZaKQKvcCN0Ax5pwjgbrYYaTn4z8sAE5ooXqKzg9kjrEC8/jIpwvAg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:23:34.763905Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.4376","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:65d2068feb2e61a091a1527c095ffc784e1974203e546b85c11352ec53b15fd6","sha256:998d68e4699a5a33114f7ae6b7070700f057ba98af95b9205b06e7c3394b88d4"],"state_sha256":"0539fd6bb0d1e26c4d9868111c3c50706563b514bdb74551765748eaa37ecb69"}