{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:3HYJMPUYY4CZNTQPFVQ5GC6RHT","short_pith_number":"pith:3HYJMPUY","canonical_record":{"source":{"id":"1904.07982","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2019-04-16T20:55:59Z","cross_cats_sorted":["cs.CL"],"title_canon_sha256":"54446d2bfc62837e28382493696009f52f093cbb1470be77769925aede5d53dc","abstract_canon_sha256":"1ca3907d68505445b3479a2fd0f8af80a93f190a0a6e31f635b6658f75f2ba01"},"schema_version":"1.0"},"canonical_sha256":"d9f0963e98c70596ce0f2d61d30bd13ceb187c10893b2ea9482075eb8b64c4c9","source":{"kind":"arxiv","id":"1904.07982","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.07982","created_at":"2026-05-17T23:48:19Z"},{"alias_kind":"arxiv_version","alias_value":"1904.07982v1","created_at":"2026-05-17T23:48:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.07982","created_at":"2026-05-17T23:48:19Z"},{"alias_kind":"pith_short_12","alias_value":"3HYJMPUYY4CZ","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"3HYJMPUYY4CZNTQP","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"3HYJMPUY","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:3HYJMPUYY4CZNTQPFVQ5GC6RHT","target":"record","payload":{"canonical_record":{"source":{"id":"1904.07982","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2019-04-16T20:55:59Z","cross_cats_sorted":["cs.CL"],"title_canon_sha256":"54446d2bfc62837e28382493696009f52f093cbb1470be77769925aede5d53dc","abstract_canon_sha256":"1ca3907d68505445b3479a2fd0f8af80a93f190a0a6e31f635b6658f75f2ba01"},"schema_version":"1.0"},"canonical_sha256":"d9f0963e98c70596ce0f2d61d30bd13ceb187c10893b2ea9482075eb8b64c4c9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:19.159154Z","signature_b64":"kGa42yixXoLv5DHoNUMBO7YboU7ktA4eSvylUhF3bwDhfrPn9fBIE+yF7cgdrhg71JTOd+UwEPvULgp97HP3BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d9f0963e98c70596ce0f2d61d30bd13ceb187c10893b2ea9482075eb8b64c4c9","last_reissued_at":"2026-05-17T23:48:19.158434Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:19.158434Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.07982","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":"2026-05-17T23:48:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QBKvySfw1R1wCfiM63dgrTaq5e8LR9lpl+V+M7TX7e0pg2SnO+PgYz0wk66e/Udu2DdeZeZvhhjn0DLRnYQ2Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T02:36:07.417049Z"},"content_sha256":"fce1d49bb4cb49272157154518a7df4747ca79e4fb02427fc5c70250dca24fde","schema_version":"1.0","event_id":"sha256:fce1d49bb4cb49272157154518a7df4747ca79e4fb02427fc5c70250dca24fde"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:3HYJMPUYY4CZNTQPFVQ5GC6RHT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Query Expansion for Cross-Language Question Re-Ranking","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CL"],"primary_cat":"cs.IR","authors_text":"Kevin Duh, Muhammad Mahbubur Rahman, Sorami Hisamoto","submitted_at":"2019-04-16T20:55:59Z","abstract_excerpt":"Community question-answering (CQA) platforms have become very popular forums for asking and answering questions daily. While these forums are rich repositories of community knowledge, they present challenges for finding relevant answers and similar questions, due to the open-ended nature of informal discussions. Further, if the platform allows questions and answers in multiple languages, we are faced with the additional challenge of matching cross-lingual information. In this work, we focus on the cross-language question re-ranking shared task, which aims to find existing questions that may be"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.07982","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":"2026-05-17T23:48:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"06yys3dLlPCdC/lVV2vga+y1ThmbvjmLFNb8FoxDZ6+h2rw4IeCc/0iUiS4teHnTlC2zdlaHJcJWEKrq/zq1Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T02:36:07.417616Z"},"content_sha256":"c3b931c44771d532b598d0d1af2e5216095cf6852b50236381856723a93cadfc","schema_version":"1.0","event_id":"sha256:c3b931c44771d532b598d0d1af2e5216095cf6852b50236381856723a93cadfc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3HYJMPUYY4CZNTQPFVQ5GC6RHT/bundle.json","state_url":"https://pith.science/pith/3HYJMPUYY4CZNTQPFVQ5GC6RHT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3HYJMPUYY4CZNTQPFVQ5GC6RHT/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":"2026-06-07T02:36:07Z","links":{"resolver":"https://pith.science/pith/3HYJMPUYY4CZNTQPFVQ5GC6RHT","bundle":"https://pith.science/pith/3HYJMPUYY4CZNTQPFVQ5GC6RHT/bundle.json","state":"https://pith.science/pith/3HYJMPUYY4CZNTQPFVQ5GC6RHT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3HYJMPUYY4CZNTQPFVQ5GC6RHT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:3HYJMPUYY4CZNTQPFVQ5GC6RHT","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":"1ca3907d68505445b3479a2fd0f8af80a93f190a0a6e31f635b6658f75f2ba01","cross_cats_sorted":["cs.CL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2019-04-16T20:55:59Z","title_canon_sha256":"54446d2bfc62837e28382493696009f52f093cbb1470be77769925aede5d53dc"},"schema_version":"1.0","source":{"id":"1904.07982","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.07982","created_at":"2026-05-17T23:48:19Z"},{"alias_kind":"arxiv_version","alias_value":"1904.07982v1","created_at":"2026-05-17T23:48:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.07982","created_at":"2026-05-17T23:48:19Z"},{"alias_kind":"pith_short_12","alias_value":"3HYJMPUYY4CZ","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"3HYJMPUYY4CZNTQP","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"3HYJMPUY","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:c3b931c44771d532b598d0d1af2e5216095cf6852b50236381856723a93cadfc","target":"graph","created_at":"2026-05-17T23:48:19Z","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":"Community question-answering (CQA) platforms have become very popular forums for asking and answering questions daily. While these forums are rich repositories of community knowledge, they present challenges for finding relevant answers and similar questions, due to the open-ended nature of informal discussions. Further, if the platform allows questions and answers in multiple languages, we are faced with the additional challenge of matching cross-lingual information. In this work, we focus on the cross-language question re-ranking shared task, which aims to find existing questions that may be","authors_text":"Kevin Duh, Muhammad Mahbubur Rahman, Sorami Hisamoto","cross_cats":["cs.CL"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2019-04-16T20:55:59Z","title":"Query Expansion for Cross-Language Question Re-Ranking"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.07982","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:fce1d49bb4cb49272157154518a7df4747ca79e4fb02427fc5c70250dca24fde","target":"record","created_at":"2026-05-17T23:48:19Z","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":"1ca3907d68505445b3479a2fd0f8af80a93f190a0a6e31f635b6658f75f2ba01","cross_cats_sorted":["cs.CL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2019-04-16T20:55:59Z","title_canon_sha256":"54446d2bfc62837e28382493696009f52f093cbb1470be77769925aede5d53dc"},"schema_version":"1.0","source":{"id":"1904.07982","kind":"arxiv","version":1}},"canonical_sha256":"d9f0963e98c70596ce0f2d61d30bd13ceb187c10893b2ea9482075eb8b64c4c9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d9f0963e98c70596ce0f2d61d30bd13ceb187c10893b2ea9482075eb8b64c4c9","first_computed_at":"2026-05-17T23:48:19.158434Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:19.158434Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kGa42yixXoLv5DHoNUMBO7YboU7ktA4eSvylUhF3bwDhfrPn9fBIE+yF7cgdrhg71JTOd+UwEPvULgp97HP3BA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:19.159154Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.07982","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fce1d49bb4cb49272157154518a7df4747ca79e4fb02427fc5c70250dca24fde","sha256:c3b931c44771d532b598d0d1af2e5216095cf6852b50236381856723a93cadfc"],"state_sha256":"4763caec5e840ba54ddd6970ca04c4a68a5a010aa6e32f7851579f78c4279616"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Za2l7V5zvAx+UfmNaaI7Ly50B6X9Zw071nq2/NfMx3BpLcE0Z8eEcUTSH+vkfjh7b5k47LzUNP7YmgmYMeFmAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T02:36:07.420588Z","bundle_sha256":"a604007c6dc930d3ee7f1f7bf56897dca7befbe7f62af2754a8e663dc0b62034"}}