{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:DASG7665GB4Q7AARXTZYH7ZVL4","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":"81492c73290ae31b44f6d75568a592d5aa1684109d1288e34e7be0958b6ec623","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2016-03-21T20:12:44Z","title_canon_sha256":"f4cbd5499c447c8f25ae783298ebca8fa03d5d3e9ec26b849c580967bd54540d"},"schema_version":"1.0","source":{"id":"1603.06598","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.06598","created_at":"2026-05-18T01:12:41Z"},{"alias_kind":"arxiv_version","alias_value":"1603.06598v2","created_at":"2026-05-18T01:12:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.06598","created_at":"2026-05-18T01:12:41Z"},{"alias_kind":"pith_short_12","alias_value":"DASG7665GB4Q","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"DASG7665GB4Q7AAR","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"DASG7665","created_at":"2026-05-18T12:30:09Z"}],"graph_snapshots":[{"event_id":"sha256:89520ff73d0b09125e09cc5bfd229ba9515085a2974f3e24a38bf220c7cfbce5","target":"graph","created_at":"2026-05-18T01:12:41Z","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":"Traditional syntax models typically leverage part-of-speech (POS) information by constructing features from hand-tuned templates. We demonstrate that a better approach is to utilize POS tags as a regularizer of learned representations. We propose a simple method for learning a stacked pipeline of models which we call \"stack-propagation\". We apply this to dependency parsing and tagging, where we use the hidden layer of the tagger network as a representation of the input tokens for the parser. At test time, our parser does not require predicted POS tags. On 19 languages from the Universal Depend","authors_text":"David Weiss, Yuan Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2016-03-21T20:12:44Z","title":"Stack-propagation: Improved Representation Learning for Syntax"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.06598","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":"sha256:72f02736ee32872e6767ac5e13a1d78876f24f1589468d0137afffdee26ad60c","target":"record","created_at":"2026-05-18T01:12:41Z","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":"81492c73290ae31b44f6d75568a592d5aa1684109d1288e34e7be0958b6ec623","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2016-03-21T20:12:44Z","title_canon_sha256":"f4cbd5499c447c8f25ae783298ebca8fa03d5d3e9ec26b849c580967bd54540d"},"schema_version":"1.0","source":{"id":"1603.06598","kind":"arxiv","version":2}},"canonical_sha256":"18246ffbdd30790f8011bcf383ff355f2b563a8cfc4164fd16cb2fd8fef61aa9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18246ffbdd30790f8011bcf383ff355f2b563a8cfc4164fd16cb2fd8fef61aa9","first_computed_at":"2026-05-18T01:12:41.954476Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:41.954476Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"B8MMSdXR4ofQ08KJtxpIyIPNlwQYTYWFri5kShyAAJxU3HAnOgnAec/+zktep9oDCFSZ7pSkLpIsS4CeiuqOCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:41.955754Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.06598","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:72f02736ee32872e6767ac5e13a1d78876f24f1589468d0137afffdee26ad60c","sha256:89520ff73d0b09125e09cc5bfd229ba9515085a2974f3e24a38bf220c7cfbce5"],"state_sha256":"10ddfc6780af58bbc60934c43674a114e86b2d8a0f76b529fed891b3ab3be194"}