{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:N4DHKIKPCHB2M3BIJDPJ55Y7F3","short_pith_number":"pith:N4DHKIKP","canonical_record":{"source":{"id":"1909.07316","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-09-16T16:20:10Z","cross_cats_sorted":["cs.CY"],"title_canon_sha256":"3ca643b0cbd835027b2325f094db5aa1c519c480f5d70093f512bbbb84d042db","abstract_canon_sha256":"e33f2b1d702cbecd17273f4ed539c056151af346979bafb29f114cfbd79d25c6"},"schema_version":"1.0"},"canonical_sha256":"6f0675214f11c3a66c2848de9ef71f2ef558b363c2d9d13d7a7b5321b8160465","source":{"kind":"arxiv","id":"1909.07316","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.07316","created_at":"2026-07-05T00:04:54Z"},{"alias_kind":"arxiv_version","alias_value":"1909.07316v1","created_at":"2026-07-05T00:04:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.07316","created_at":"2026-07-05T00:04:54Z"},{"alias_kind":"pith_short_12","alias_value":"N4DHKIKPCHB2","created_at":"2026-07-05T00:04:54Z"},{"alias_kind":"pith_short_16","alias_value":"N4DHKIKPCHB2M3BI","created_at":"2026-07-05T00:04:54Z"},{"alias_kind":"pith_short_8","alias_value":"N4DHKIKP","created_at":"2026-07-05T00:04:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:N4DHKIKPCHB2M3BIJDPJ55Y7F3","target":"record","payload":{"canonical_record":{"source":{"id":"1909.07316","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-09-16T16:20:10Z","cross_cats_sorted":["cs.CY"],"title_canon_sha256":"3ca643b0cbd835027b2325f094db5aa1c519c480f5d70093f512bbbb84d042db","abstract_canon_sha256":"e33f2b1d702cbecd17273f4ed539c056151af346979bafb29f114cfbd79d25c6"},"schema_version":"1.0"},"canonical_sha256":"6f0675214f11c3a66c2848de9ef71f2ef558b363c2d9d13d7a7b5321b8160465","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:04:54.982715Z","signature_b64":"pwBpraaW+qOIzkKGR88s5qUpqKHyUcTdHgiPavgcqvhGniWOqt3mENxqUdm2WsDgK50PUkYs7L1PagedgfY2Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6f0675214f11c3a66c2848de9ef71f2ef558b363c2d9d13d7a7b5321b8160465","last_reissued_at":"2026-07-05T00:04:54.982333Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:04:54.982333Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1909.07316","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":"2026-07-05T00:04:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZhYu6wis1K/GtExxWAG0JLwhjSlLfZCGi+8UeHaMpcZrosK6Se1RzVUnJ9mG/V8AH+c8rZ3oEWz5M/eGdoCPAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T00:35:21.746182Z"},"content_sha256":"9401c8c386805a7b585f0624e5c0255abda3050acc94a822db34b50160c55921","schema_version":"1.0","event_id":"sha256:9401c8c386805a7b585f0624e5c0255abda3050acc94a822db34b50160c55921"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:N4DHKIKPCHB2M3BIJDPJ55Y7F3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Situational Awareness Enhanced through Social Media Analytics: A Survey of First Responders","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CY"],"primary_cat":"cs.SI","authors_text":"Christina Stober, David S. Ebert, Luke S. Snyder, Morteza Karimzadeh","submitted_at":"2019-09-16T16:20:10Z","abstract_excerpt":"Social media data has been increasingly used to facilitate situational awareness during events and emergencies such as natural disasters. While researchers have investigated several methods to summarize, visualize or mine the data for analysis, first responders have not been able to fully leverage research advancements largely due to the gap between academic research and deployed, functional systems. In this paper, we explore the opportunities and barriers for the effective use of social media data from first responders' perspective. We present the summary of several detailed interviews with f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.07316","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/1909.07316/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":"2026-07-05T00:04:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4x8oOh7q7ZtIGG47qVEw1kygTKgM6fvT+X3ikk5fwBaXIZ8GQ5ng2xP8wfS8YnJXBxhqxP/nNf+2ie2mTkXHCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T00:35:21.747115Z"},"content_sha256":"8ce534fbb88e287c38ce781adaaec7dd1363830f443bb706e9441383d4077475","schema_version":"1.0","event_id":"sha256:8ce534fbb88e287c38ce781adaaec7dd1363830f443bb706e9441383d4077475"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/N4DHKIKPCHB2M3BIJDPJ55Y7F3/bundle.json","state_url":"https://pith.science/pith/N4DHKIKPCHB2M3BIJDPJ55Y7F3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/N4DHKIKPCHB2M3BIJDPJ55Y7F3/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":"2026-08-05T00:35:21Z","links":{"resolver":"https://pith.science/pith/N4DHKIKPCHB2M3BIJDPJ55Y7F3","bundle":"https://pith.science/pith/N4DHKIKPCHB2M3BIJDPJ55Y7F3/bundle.json","state":"https://pith.science/pith/N4DHKIKPCHB2M3BIJDPJ55Y7F3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/N4DHKIKPCHB2M3BIJDPJ55Y7F3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:N4DHKIKPCHB2M3BIJDPJ55Y7F3","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":"e33f2b1d702cbecd17273f4ed539c056151af346979bafb29f114cfbd79d25c6","cross_cats_sorted":["cs.CY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-09-16T16:20:10Z","title_canon_sha256":"3ca643b0cbd835027b2325f094db5aa1c519c480f5d70093f512bbbb84d042db"},"schema_version":"1.0","source":{"id":"1909.07316","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.07316","created_at":"2026-07-05T00:04:54Z"},{"alias_kind":"arxiv_version","alias_value":"1909.07316v1","created_at":"2026-07-05T00:04:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.07316","created_at":"2026-07-05T00:04:54Z"},{"alias_kind":"pith_short_12","alias_value":"N4DHKIKPCHB2","created_at":"2026-07-05T00:04:54Z"},{"alias_kind":"pith_short_16","alias_value":"N4DHKIKPCHB2M3BI","created_at":"2026-07-05T00:04:54Z"},{"alias_kind":"pith_short_8","alias_value":"N4DHKIKP","created_at":"2026-07-05T00:04:54Z"}],"graph_snapshots":[{"event_id":"sha256:8ce534fbb88e287c38ce781adaaec7dd1363830f443bb706e9441383d4077475","target":"graph","created_at":"2026-07-05T00:04:54Z","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/1909.07316/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Social media data has been increasingly used to facilitate situational awareness during events and emergencies such as natural disasters. While researchers have investigated several methods to summarize, visualize or mine the data for analysis, first responders have not been able to fully leverage research advancements largely due to the gap between academic research and deployed, functional systems. In this paper, we explore the opportunities and barriers for the effective use of social media data from first responders' perspective. We present the summary of several detailed interviews with f","authors_text":"Christina Stober, David S. Ebert, Luke S. Snyder, Morteza Karimzadeh","cross_cats":["cs.CY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-09-16T16:20:10Z","title":"Situational Awareness Enhanced through Social Media Analytics: A Survey of First Responders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.07316","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":"sha256:9401c8c386805a7b585f0624e5c0255abda3050acc94a822db34b50160c55921","target":"record","created_at":"2026-07-05T00:04:54Z","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":"e33f2b1d702cbecd17273f4ed539c056151af346979bafb29f114cfbd79d25c6","cross_cats_sorted":["cs.CY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-09-16T16:20:10Z","title_canon_sha256":"3ca643b0cbd835027b2325f094db5aa1c519c480f5d70093f512bbbb84d042db"},"schema_version":"1.0","source":{"id":"1909.07316","kind":"arxiv","version":1}},"canonical_sha256":"6f0675214f11c3a66c2848de9ef71f2ef558b363c2d9d13d7a7b5321b8160465","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6f0675214f11c3a66c2848de9ef71f2ef558b363c2d9d13d7a7b5321b8160465","first_computed_at":"2026-07-05T00:04:54.982333Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:04:54.982333Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pwBpraaW+qOIzkKGR88s5qUpqKHyUcTdHgiPavgcqvhGniWOqt3mENxqUdm2WsDgK50PUkYs7L1PagedgfY2Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:04:54.982715Z","signed_message":"canonical_sha256_bytes"},"source_id":"1909.07316","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9401c8c386805a7b585f0624e5c0255abda3050acc94a822db34b50160c55921","sha256:8ce534fbb88e287c38ce781adaaec7dd1363830f443bb706e9441383d4077475"],"state_sha256":"3230351ca2706de6d8ff4342582403c05cdc8a449c79d3db8331921ff5702a7b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xBJMw2ak8sDiHcF+JF0E9xpD1378yUyPN1XBF7/5PQ0HwV1U8PGogqG26SjT2fT7NQrvLqBamP05YCCFB8KhCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T00:35:21.752812Z","bundle_sha256":"7eecb99556102b18c9feb8b94890af21b6552548d2f8736201be2aee568548dd"}}