{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:YU4DQRTSV3YHVURI6TY6FR2XXW","short_pith_number":"pith:YU4DQRTS","canonical_record":{"source":{"id":"1805.07398","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-05-18T18:58:38Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"e1789a3fd9eb3aff3c114d71831fbf790d81d7c3d8f67f5fd8f30cd98ebc37ec","abstract_canon_sha256":"c8d3e4f823c98fa115d38df69daeebc34659981d866ff42bcec1a4bf690f453e"},"schema_version":"1.0"},"canonical_sha256":"c538384672aef07ad228f4f1e2c757bd95a5a0b7051a18bd7652cee24f6c1279","source":{"kind":"arxiv","id":"1805.07398","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.07398","created_at":"2026-05-18T00:15:35Z"},{"alias_kind":"arxiv_version","alias_value":"1805.07398v1","created_at":"2026-05-18T00:15:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.07398","created_at":"2026-05-18T00:15:35Z"},{"alias_kind":"pith_short_12","alias_value":"YU4DQRTSV3YH","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YU4DQRTSV3YHVURI","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YU4DQRTS","created_at":"2026-05-18T12:33:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:YU4DQRTSV3YHVURI6TY6FR2XXW","target":"record","payload":{"canonical_record":{"source":{"id":"1805.07398","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-05-18T18:58:38Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"e1789a3fd9eb3aff3c114d71831fbf790d81d7c3d8f67f5fd8f30cd98ebc37ec","abstract_canon_sha256":"c8d3e4f823c98fa115d38df69daeebc34659981d866ff42bcec1a4bf690f453e"},"schema_version":"1.0"},"canonical_sha256":"c538384672aef07ad228f4f1e2c757bd95a5a0b7051a18bd7652cee24f6c1279","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:35.818828Z","signature_b64":"B8yXV+kUpnxNIYFPeq4BflM7FDnqcRnxmLo2WKTZ8hmaFOL5zcNfHFOB/jHjYzGkf3StEAmSwUdHWbQNbfJABg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c538384672aef07ad228f4f1e2c757bd95a5a0b7051a18bd7652cee24f6c1279","last_reissued_at":"2026-05-18T00:15:35.817987Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:35.817987Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.07398","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":"2026-05-18T00:15:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6mrCofp84rYRbtK3mAR4cJgXlMBE0jHJ+ojoBWK105mNFOYs935fZ5uS4giIt3mS6o2zJlVuZoZtWJKDcB5/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T18:15:03.882642Z"},"content_sha256":"8f5b0400322d7089a4b2685e7aede2318489986d90dbbf0a1522958e5c888f8d","schema_version":"1.0","event_id":"sha256:8f5b0400322d7089a4b2685e7aede2318489986d90dbbf0a1522958e5c888f8d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:YU4DQRTSV3YHVURI6TY6FR2XXW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Robust Handling of Polysemy via Sparse Representations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CL","authors_text":"Abhijit Mahabal, Dan Roth, Sid Mittal","submitted_at":"2018-05-18T18:58:38Z","abstract_excerpt":"Words are polysemous and multi-faceted, with many shades of meanings. We suggest that sparse distributed representations are more suitable than other, commonly used, (dense) representations to express these multiple facets, and present Category Builder, a working system that, as we show, makes use of sparse representations to support multi-faceted lexical representations. We argue that the set expansion task is well suited to study these meaning distinctions since a word may belong to multiple sets with a different reason for membership in each. We therefore exhibit the performance of Category"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.07398","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":"2026-05-18T00:15:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L+BeO/YJlH361d2mLRuy34bHLS0lFxpeWDPInoasTM18AxiBjaEuagpfOMnXqr7FxJdW6D5k1sZEwAhVozLzCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T18:15:03.882985Z"},"content_sha256":"e0a421ea4dff20dabcb7848daa21f0c17f27c25b85adee5755ce9d248778a46b","schema_version":"1.0","event_id":"sha256:e0a421ea4dff20dabcb7848daa21f0c17f27c25b85adee5755ce9d248778a46b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YU4DQRTSV3YHVURI6TY6FR2XXW/bundle.json","state_url":"https://pith.science/pith/YU4DQRTSV3YHVURI6TY6FR2XXW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YU4DQRTSV3YHVURI6TY6FR2XXW/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":"2026-06-27T18:15:03Z","links":{"resolver":"https://pith.science/pith/YU4DQRTSV3YHVURI6TY6FR2XXW","bundle":"https://pith.science/pith/YU4DQRTSV3YHVURI6TY6FR2XXW/bundle.json","state":"https://pith.science/pith/YU4DQRTSV3YHVURI6TY6FR2XXW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YU4DQRTSV3YHVURI6TY6FR2XXW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:YU4DQRTSV3YHVURI6TY6FR2XXW","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":"c8d3e4f823c98fa115d38df69daeebc34659981d866ff42bcec1a4bf690f453e","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-05-18T18:58:38Z","title_canon_sha256":"e1789a3fd9eb3aff3c114d71831fbf790d81d7c3d8f67f5fd8f30cd98ebc37ec"},"schema_version":"1.0","source":{"id":"1805.07398","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.07398","created_at":"2026-05-18T00:15:35Z"},{"alias_kind":"arxiv_version","alias_value":"1805.07398v1","created_at":"2026-05-18T00:15:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.07398","created_at":"2026-05-18T00:15:35Z"},{"alias_kind":"pith_short_12","alias_value":"YU4DQRTSV3YH","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YU4DQRTSV3YHVURI","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YU4DQRTS","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:e0a421ea4dff20dabcb7848daa21f0c17f27c25b85adee5755ce9d248778a46b","target":"graph","created_at":"2026-05-18T00:15:35Z","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":"Words are polysemous and multi-faceted, with many shades of meanings. We suggest that sparse distributed representations are more suitable than other, commonly used, (dense) representations to express these multiple facets, and present Category Builder, a working system that, as we show, makes use of sparse representations to support multi-faceted lexical representations. We argue that the set expansion task is well suited to study these meaning distinctions since a word may belong to multiple sets with a different reason for membership in each. We therefore exhibit the performance of Category","authors_text":"Abhijit Mahabal, Dan Roth, Sid Mittal","cross_cats":["cs.AI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-05-18T18:58:38Z","title":"Robust Handling of Polysemy via Sparse Representations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.07398","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":"sha256:8f5b0400322d7089a4b2685e7aede2318489986d90dbbf0a1522958e5c888f8d","target":"record","created_at":"2026-05-18T00:15:35Z","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":"c8d3e4f823c98fa115d38df69daeebc34659981d866ff42bcec1a4bf690f453e","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-05-18T18:58:38Z","title_canon_sha256":"e1789a3fd9eb3aff3c114d71831fbf790d81d7c3d8f67f5fd8f30cd98ebc37ec"},"schema_version":"1.0","source":{"id":"1805.07398","kind":"arxiv","version":1}},"canonical_sha256":"c538384672aef07ad228f4f1e2c757bd95a5a0b7051a18bd7652cee24f6c1279","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c538384672aef07ad228f4f1e2c757bd95a5a0b7051a18bd7652cee24f6c1279","first_computed_at":"2026-05-18T00:15:35.817987Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:35.817987Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"B8yXV+kUpnxNIYFPeq4BflM7FDnqcRnxmLo2WKTZ8hmaFOL5zcNfHFOB/jHjYzGkf3StEAmSwUdHWbQNbfJABg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:35.818828Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.07398","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8f5b0400322d7089a4b2685e7aede2318489986d90dbbf0a1522958e5c888f8d","sha256:e0a421ea4dff20dabcb7848daa21f0c17f27c25b85adee5755ce9d248778a46b"],"state_sha256":"5c20d6baa66bd521afcfc6ebd28532eb91963995a93b51b7cb0cf7d67786be12"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lxYc0Rya78g78eA/Mdr/Z/M50xzIVUyt+9qJ+HM1rMEIcMdZ23DXlvjQartQn/rW4P/RZ7lYccvxEtlbTUMvAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T18:15:03.884772Z","bundle_sha256":"c1132df46a747e52f3c9f6ed1d71e05e43ac6ef86c848099fe59eb13ab01797a"}}