{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:M7JQIJ6XJE4RIXARDJSGMDSZOU","short_pith_number":"pith:M7JQIJ6X","canonical_record":{"source":{"id":"1908.01821","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-08-02T17:12:38Z","cross_cats_sorted":["cs.LG","stat.ML"],"title_canon_sha256":"cec068f6740fc1167ef9b548e0083c797492ef619e34e88dd8c728470298242b","abstract_canon_sha256":"2c871631223d0fe89ce121270cf87b48e34be8142b8c22c89a62cad83ae04509"},"schema_version":"1.0"},"canonical_sha256":"67d30427d74939145c111a64660e597516e1558d3b5411814c73b65c914093a6","source":{"kind":"arxiv","id":"1908.01821","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.01821","created_at":"2026-07-04T23:51:48Z"},{"alias_kind":"arxiv_version","alias_value":"1908.01821v1","created_at":"2026-07-04T23:51:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.01821","created_at":"2026-07-04T23:51:48Z"},{"alias_kind":"pith_short_12","alias_value":"M7JQIJ6XJE4R","created_at":"2026-07-04T23:51:48Z"},{"alias_kind":"pith_short_16","alias_value":"M7JQIJ6XJE4RIXAR","created_at":"2026-07-04T23:51:48Z"},{"alias_kind":"pith_short_8","alias_value":"M7JQIJ6X","created_at":"2026-07-04T23:51:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:M7JQIJ6XJE4RIXARDJSGMDSZOU","target":"record","payload":{"canonical_record":{"source":{"id":"1908.01821","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-08-02T17:12:38Z","cross_cats_sorted":["cs.LG","stat.ML"],"title_canon_sha256":"cec068f6740fc1167ef9b548e0083c797492ef619e34e88dd8c728470298242b","abstract_canon_sha256":"2c871631223d0fe89ce121270cf87b48e34be8142b8c22c89a62cad83ae04509"},"schema_version":"1.0"},"canonical_sha256":"67d30427d74939145c111a64660e597516e1558d3b5411814c73b65c914093a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:51:48.037995Z","signature_b64":"xeGsx3KfyV6Hf10SioxUJp4t3U26OEJR/JHySTYfNemhMcTsC61cdPFlYmo2YyJaP8iUPzSupWtKh7oFFn4gBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"67d30427d74939145c111a64660e597516e1558d3b5411814c73b65c914093a6","last_reissued_at":"2026-07-04T23:51:48.037588Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:51:48.037588Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.01821","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":"2026-07-04T23:51:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3mAgpfG7Yn8A+qcxNxRBkzFB9pgMapGq6KAv5+3lsoQ8VXFNiQNlEbN2e2l7fmazVSbQvz5iATynBn/kjrHZBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T07:38:56.737762Z"},"content_sha256":"88fc17cb43b69e6c8137496a1735e12139164f1b4d03a9be54d32d447547a732","schema_version":"1.0","event_id":"sha256:88fc17cb43b69e6c8137496a1735e12139164f1b4d03a9be54d32d447547a732"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:M7JQIJ6XJE4RIXARDJSGMDSZOU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dialogue Act Classification in Group Chats with DAG-LSTMs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG","stat.ML"],"primary_cat":"cs.CL","authors_text":"Brendan Fahy, Camilo Ortiz, Duccio Pappadopulo, Haimin Zhang, Mu-Hsin Wei, Neophytos Nephytou, Ozan \\.Irsoy, Peter Lund, Rakesh Gosangi","submitted_at":"2019-08-02T17:12:38Z","abstract_excerpt":"Dialogue act (DA) classification has been studied for the past two decades and has several key applications such as workflow automation and conversation analytics. Researchers have used, to address this problem, various traditional machine learning models, and more recently deep neural network models such as hierarchical convolutional neural networks (CNNs) and long short-term memory (LSTM) networks. In this paper, we introduce a new model architecture, directed-acyclic-graph LSTM (DAG-LSTM) for DA classification. A DAG-LSTM exploits the turn-taking structure naturally present in a multi-party"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.01821","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/1908.01821/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":"2026-07-04T23:51:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8fmspi39YYVnkV1UzUqtELnTMr1419iSdiETEkWuReSgT2eXItbHTqc0i5oN+urd7Fn6LQR5uS4x0nFM3/acBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T07:38:56.738319Z"},"content_sha256":"015616a1b71d31250dffe88532dbc0dd0083c56884e1f71e24caee3a03cb890b","schema_version":"1.0","event_id":"sha256:015616a1b71d31250dffe88532dbc0dd0083c56884e1f71e24caee3a03cb890b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M7JQIJ6XJE4RIXARDJSGMDSZOU/bundle.json","state_url":"https://pith.science/pith/M7JQIJ6XJE4RIXARDJSGMDSZOU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M7JQIJ6XJE4RIXARDJSGMDSZOU/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":"2026-08-16T07:38:56Z","links":{"resolver":"https://pith.science/pith/M7JQIJ6XJE4RIXARDJSGMDSZOU","bundle":"https://pith.science/pith/M7JQIJ6XJE4RIXARDJSGMDSZOU/bundle.json","state":"https://pith.science/pith/M7JQIJ6XJE4RIXARDJSGMDSZOU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M7JQIJ6XJE4RIXARDJSGMDSZOU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:M7JQIJ6XJE4RIXARDJSGMDSZOU","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":"2c871631223d0fe89ce121270cf87b48e34be8142b8c22c89a62cad83ae04509","cross_cats_sorted":["cs.LG","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-08-02T17:12:38Z","title_canon_sha256":"cec068f6740fc1167ef9b548e0083c797492ef619e34e88dd8c728470298242b"},"schema_version":"1.0","source":{"id":"1908.01821","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.01821","created_at":"2026-07-04T23:51:48Z"},{"alias_kind":"arxiv_version","alias_value":"1908.01821v1","created_at":"2026-07-04T23:51:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.01821","created_at":"2026-07-04T23:51:48Z"},{"alias_kind":"pith_short_12","alias_value":"M7JQIJ6XJE4R","created_at":"2026-07-04T23:51:48Z"},{"alias_kind":"pith_short_16","alias_value":"M7JQIJ6XJE4RIXAR","created_at":"2026-07-04T23:51:48Z"},{"alias_kind":"pith_short_8","alias_value":"M7JQIJ6X","created_at":"2026-07-04T23:51:48Z"}],"graph_snapshots":[{"event_id":"sha256:015616a1b71d31250dffe88532dbc0dd0083c56884e1f71e24caee3a03cb890b","target":"graph","created_at":"2026-07-04T23:51:48Z","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/1908.01821/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Dialogue act (DA) classification has been studied for the past two decades and has several key applications such as workflow automation and conversation analytics. Researchers have used, to address this problem, various traditional machine learning models, and more recently deep neural network models such as hierarchical convolutional neural networks (CNNs) and long short-term memory (LSTM) networks. In this paper, we introduce a new model architecture, directed-acyclic-graph LSTM (DAG-LSTM) for DA classification. A DAG-LSTM exploits the turn-taking structure naturally present in a multi-party","authors_text":"Brendan Fahy, Camilo Ortiz, Duccio Pappadopulo, Haimin Zhang, Mu-Hsin Wei, Neophytos Nephytou, Ozan \\.Irsoy, Peter Lund, Rakesh Gosangi","cross_cats":["cs.LG","stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-08-02T17:12:38Z","title":"Dialogue Act Classification in Group Chats with DAG-LSTMs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.01821","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":"sha256:88fc17cb43b69e6c8137496a1735e12139164f1b4d03a9be54d32d447547a732","target":"record","created_at":"2026-07-04T23:51:48Z","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":"2c871631223d0fe89ce121270cf87b48e34be8142b8c22c89a62cad83ae04509","cross_cats_sorted":["cs.LG","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-08-02T17:12:38Z","title_canon_sha256":"cec068f6740fc1167ef9b548e0083c797492ef619e34e88dd8c728470298242b"},"schema_version":"1.0","source":{"id":"1908.01821","kind":"arxiv","version":1}},"canonical_sha256":"67d30427d74939145c111a64660e597516e1558d3b5411814c73b65c914093a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"67d30427d74939145c111a64660e597516e1558d3b5411814c73b65c914093a6","first_computed_at":"2026-07-04T23:51:48.037588Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:51:48.037588Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xeGsx3KfyV6Hf10SioxUJp4t3U26OEJR/JHySTYfNemhMcTsC61cdPFlYmo2YyJaP8iUPzSupWtKh7oFFn4gBg==","signature_status":"signed_v1","signed_at":"2026-07-04T23:51:48.037995Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.01821","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:88fc17cb43b69e6c8137496a1735e12139164f1b4d03a9be54d32d447547a732","sha256:015616a1b71d31250dffe88532dbc0dd0083c56884e1f71e24caee3a03cb890b"],"state_sha256":"b4606f5bc8b378a9ae895118c7b249ca56523cea61c62746f971f104609d49aa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xy1ybAEgL5YrhomF0rmP9jaiQ/jM/KDsaD9DeQwJVHPSU359Y0oZ7T5j9jo4JeOLN7gpF3PBNa+rxfQsud8+BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T07:38:56.742556Z","bundle_sha256":"2fef002eab7e960d56d6c1f13de29913fd7d3ecc69502b8b11ff1197a73e0f3b"}}