{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:QRXB2EOBYL5N4P2R2HYNPZISOU","short_pith_number":"pith:QRXB2EOB","canonical_record":{"source":{"id":"1701.08796","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2017-01-30T19:41:04Z","cross_cats_sorted":["cs.CY","cs.SI"],"title_canon_sha256":"00bf30ef3dda6726fd065aa8a896f8c280da2b651ddfc811fecfcef431cbabce","abstract_canon_sha256":"c0720f7c7775abfa0e10639a222dcf1d9ea65648327d5922ae9a946636824d10"},"schema_version":"1.0"},"canonical_sha256":"846e1d11c1c2fade3f51d1f0d7e51275315e9f81ad258e1bf1db864eeca594a9","source":{"kind":"arxiv","id":"1701.08796","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.08796","created_at":"2026-05-18T00:51:39Z"},{"alias_kind":"arxiv_version","alias_value":"1701.08796v1","created_at":"2026-05-18T00:51:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.08796","created_at":"2026-05-18T00:51:39Z"},{"alias_kind":"pith_short_12","alias_value":"QRXB2EOBYL5N","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QRXB2EOBYL5N4P2R","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QRXB2EOB","created_at":"2026-05-18T12:31:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:QRXB2EOBYL5N4P2R2HYNPZISOU","target":"record","payload":{"canonical_record":{"source":{"id":"1701.08796","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2017-01-30T19:41:04Z","cross_cats_sorted":["cs.CY","cs.SI"],"title_canon_sha256":"00bf30ef3dda6726fd065aa8a896f8c280da2b651ddfc811fecfcef431cbabce","abstract_canon_sha256":"c0720f7c7775abfa0e10639a222dcf1d9ea65648327d5922ae9a946636824d10"},"schema_version":"1.0"},"canonical_sha256":"846e1d11c1c2fade3f51d1f0d7e51275315e9f81ad258e1bf1db864eeca594a9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:51:39.170183Z","signature_b64":"ZMNW5IUcWEt/LobYwHnRs+Xv50GaEjBgrk6InRaDI6zNVNNeIhohTRkZ91UlrNSXIwyA1vjSGdy0t4Wsj3xjBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"846e1d11c1c2fade3f51d1f0d7e51275315e9f81ad258e1bf1db864eeca594a9","last_reissued_at":"2026-05-18T00:51:39.169846Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:51:39.169846Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.08796","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":"2026-05-18T00:51:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pKgPRex7wnTcSGIT90AFVUb6HVuNQr28d7UIhaM83uJmXE2ydab3zY1+zG3vGryd8R6yhvkCYnJAlAZNvY/XDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:58:25.221338Z"},"content_sha256":"358f9a7ea2fad6f4fd2a7c77d99f3d73782e797ad5d7893c08bec4127aee1a94","schema_version":"1.0","event_id":"sha256:358f9a7ea2fad6f4fd2a7c77d99f3d73782e797ad5d7893c08bec4127aee1a94"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:QRXB2EOBYL5N4P2R2HYNPZISOU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Learning from various labeling strategies for suicide-related messages on social media: An experimental study","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CY","cs.SI"],"primary_cat":"cs.LG","authors_text":"Christopher M. Homan, Qijin Cheng, Tong Liu, Vincent M.B. Silenzio","submitted_at":"2017-01-30T19:41:04Z","abstract_excerpt":"Suicide is an important but often misunderstood problem, one that researchers are now seeking to better understand through social media. Due in large part to the fuzzy nature of what constitutes suicidal risks, most supervised approaches for learning to automatically detect suicide-related activity in social media require a great deal of human labor to train. However, humans themselves have diverse or conflicting views on what constitutes suicidal thoughts. So how to obtain reliable gold standard labels is fundamentally challenging and, we hypothesize, depends largely on what is asked of the a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.08796","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":""},"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":"2026-05-18T00:51:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QmJKnOYNujAFmvkYtyZs0FNuHx5JqLEaD5oVSmVUaUyZgT/h8EPNFUbm5++/QxceNGeYhoLxypScsVOLbARoCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:58:25.221966Z"},"content_sha256":"ea8820730f5a83a97ece419a6a55fd5e0e517a53aff8277e9183b1f608c84713","schema_version":"1.0","event_id":"sha256:ea8820730f5a83a97ece419a6a55fd5e0e517a53aff8277e9183b1f608c84713"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QRXB2EOBYL5N4P2R2HYNPZISOU/bundle.json","state_url":"https://pith.science/pith/QRXB2EOBYL5N4P2R2HYNPZISOU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QRXB2EOBYL5N4P2R2HYNPZISOU/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":"2026-05-26T18:58:25Z","links":{"resolver":"https://pith.science/pith/QRXB2EOBYL5N4P2R2HYNPZISOU","bundle":"https://pith.science/pith/QRXB2EOBYL5N4P2R2HYNPZISOU/bundle.json","state":"https://pith.science/pith/QRXB2EOBYL5N4P2R2HYNPZISOU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QRXB2EOBYL5N4P2R2HYNPZISOU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:QRXB2EOBYL5N4P2R2HYNPZISOU","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":"c0720f7c7775abfa0e10639a222dcf1d9ea65648327d5922ae9a946636824d10","cross_cats_sorted":["cs.CY","cs.SI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2017-01-30T19:41:04Z","title_canon_sha256":"00bf30ef3dda6726fd065aa8a896f8c280da2b651ddfc811fecfcef431cbabce"},"schema_version":"1.0","source":{"id":"1701.08796","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.08796","created_at":"2026-05-18T00:51:39Z"},{"alias_kind":"arxiv_version","alias_value":"1701.08796v1","created_at":"2026-05-18T00:51:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.08796","created_at":"2026-05-18T00:51:39Z"},{"alias_kind":"pith_short_12","alias_value":"QRXB2EOBYL5N","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QRXB2EOBYL5N4P2R","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QRXB2EOB","created_at":"2026-05-18T12:31:39Z"}],"graph_snapshots":[{"event_id":"sha256:ea8820730f5a83a97ece419a6a55fd5e0e517a53aff8277e9183b1f608c84713","target":"graph","created_at":"2026-05-18T00:51:39Z","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":"Suicide is an important but often misunderstood problem, one that researchers are now seeking to better understand through social media. Due in large part to the fuzzy nature of what constitutes suicidal risks, most supervised approaches for learning to automatically detect suicide-related activity in social media require a great deal of human labor to train. However, humans themselves have diverse or conflicting views on what constitutes suicidal thoughts. So how to obtain reliable gold standard labels is fundamentally challenging and, we hypothesize, depends largely on what is asked of the a","authors_text":"Christopher M. Homan, Qijin Cheng, Tong Liu, Vincent M.B. Silenzio","cross_cats":["cs.CY","cs.SI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2017-01-30T19:41:04Z","title":"Learning from various labeling strategies for suicide-related messages on social media: An experimental study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.08796","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":"sha256:358f9a7ea2fad6f4fd2a7c77d99f3d73782e797ad5d7893c08bec4127aee1a94","target":"record","created_at":"2026-05-18T00:51:39Z","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":"c0720f7c7775abfa0e10639a222dcf1d9ea65648327d5922ae9a946636824d10","cross_cats_sorted":["cs.CY","cs.SI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2017-01-30T19:41:04Z","title_canon_sha256":"00bf30ef3dda6726fd065aa8a896f8c280da2b651ddfc811fecfcef431cbabce"},"schema_version":"1.0","source":{"id":"1701.08796","kind":"arxiv","version":1}},"canonical_sha256":"846e1d11c1c2fade3f51d1f0d7e51275315e9f81ad258e1bf1db864eeca594a9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"846e1d11c1c2fade3f51d1f0d7e51275315e9f81ad258e1bf1db864eeca594a9","first_computed_at":"2026-05-18T00:51:39.169846Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:51:39.169846Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZMNW5IUcWEt/LobYwHnRs+Xv50GaEjBgrk6InRaDI6zNVNNeIhohTRkZ91UlrNSXIwyA1vjSGdy0t4Wsj3xjBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:51:39.170183Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.08796","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:358f9a7ea2fad6f4fd2a7c77d99f3d73782e797ad5d7893c08bec4127aee1a94","sha256:ea8820730f5a83a97ece419a6a55fd5e0e517a53aff8277e9183b1f608c84713"],"state_sha256":"aeb2d5ad7dfdc7d9096870a0526c72d68ed03077789b20664c00f3d710787add"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IHZPY9WjqWj39LfTO/zWZuOM1TcZhJWz6zzqfZhsOF74e5eLcukDipv8E38WNP2Hqb7qY7nZMzlL0teorqpKBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:58:25.225079Z","bundle_sha256":"7fc806b17700079c98bd29636a53911baf48d806112076889f28072e0461b9c1"}}