{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:FRZX3EGIZSB23OSOECRDF4UFDE","short_pith_number":"pith:FRZX3EGI","canonical_record":{"source":{"id":"1907.09361","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-07-22T14:57:13Z","cross_cats_sorted":["cs.AI","cs.LG"],"title_canon_sha256":"227cdf252373a57f7aa3991eb400a728eef062cae45e22f0b12acdb0d1c304d6","abstract_canon_sha256":"14805d63505dfd70e2ff9b7786b73bcb93c942b0458fc252961aab8d2f932616"},"schema_version":"1.0"},"canonical_sha256":"2c737d90c8cc83adba4e20a232f2851928ba7554711e424ea2c77f32ac980966","source":{"kind":"arxiv","id":"1907.09361","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.09361","created_at":"2026-05-17T23:39:59Z"},{"alias_kind":"arxiv_version","alias_value":"1907.09361v1","created_at":"2026-05-17T23:39:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.09361","created_at":"2026-05-17T23:39:59Z"},{"alias_kind":"pith_short_12","alias_value":"FRZX3EGIZSB2","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"FRZX3EGIZSB23OSO","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"FRZX3EGI","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:FRZX3EGIZSB23OSOECRDF4UFDE","target":"record","payload":{"canonical_record":{"source":{"id":"1907.09361","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-07-22T14:57:13Z","cross_cats_sorted":["cs.AI","cs.LG"],"title_canon_sha256":"227cdf252373a57f7aa3991eb400a728eef062cae45e22f0b12acdb0d1c304d6","abstract_canon_sha256":"14805d63505dfd70e2ff9b7786b73bcb93c942b0458fc252961aab8d2f932616"},"schema_version":"1.0"},"canonical_sha256":"2c737d90c8cc83adba4e20a232f2851928ba7554711e424ea2c77f32ac980966","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:39:59.404772Z","signature_b64":"0eSqeTlDvi7+zwAXV+H3Z9uNaj0XzcbOJvs15DYlZJxkzVr+vH1PPx3NglpvwxJoh6gflQ108aAVXHRXWcCaDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2c737d90c8cc83adba4e20a232f2851928ba7554711e424ea2c77f32ac980966","last_reissued_at":"2026-05-17T23:39:59.404394Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:39:59.404394Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.09361","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":"2026-05-17T23:39:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kCwVa9t1CpKYhTsm/hx+mmUs+Rr6vQMulKpC26Pg0sMlchlCuBQ3oqhjE2SKIrHIgmCWycdHuynYcry0zPptAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:02:31.268861Z"},"content_sha256":"0adfbdf5a9f8c8c5b983e162d822dceaba4078b8dcd2c052d609a52c2872a586","schema_version":"1.0","event_id":"sha256:0adfbdf5a9f8c8c5b983e162d822dceaba4078b8dcd2c052d609a52c2872a586"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:FRZX3EGIZSB23OSOECRDF4UFDE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Introduction to Neural Network based Approaches for Question Answering over Knowledge Graphs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI","cs.LG"],"primary_cat":"cs.CL","authors_text":"Asja Fischer, Denis Lukovnikov, Gaurav Maheshwari, Jens Lehmann, Nilesh Chakraborty, Priyansh Trivedi","submitted_at":"2019-07-22T14:57:13Z","abstract_excerpt":"Question answering has emerged as an intuitive way of querying structured data sources, and has attracted significant advancements over the years. In this article, we provide an overview over these recent advancements, focusing on neural network based question answering systems over knowledge graphs. We introduce readers to the challenges in the tasks, current paradigms of approaches, discuss notable advancements, and outline the emerging trends in the field. Through this article, we aim to provide newcomers to the field with a suitable entry point, and ease their process of making informed de"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.09361","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":"2026-05-17T23:39:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BMnUqhtdSStMb2ALDiGkAX9kGFaJ50z5afwYZF2BML2fP+f9MyM2kT4BL/n69dy7fQ/vY1kiQJkz90la1BWEDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:02:31.269199Z"},"content_sha256":"dcf80db6838fe641f5b887e1b163e57fad3b345daeca4e5eda6cae395744380b","schema_version":"1.0","event_id":"sha256:dcf80db6838fe641f5b887e1b163e57fad3b345daeca4e5eda6cae395744380b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FRZX3EGIZSB23OSOECRDF4UFDE/bundle.json","state_url":"https://pith.science/pith/FRZX3EGIZSB23OSOECRDF4UFDE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FRZX3EGIZSB23OSOECRDF4UFDE/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":"2026-06-01T23:02:31Z","links":{"resolver":"https://pith.science/pith/FRZX3EGIZSB23OSOECRDF4UFDE","bundle":"https://pith.science/pith/FRZX3EGIZSB23OSOECRDF4UFDE/bundle.json","state":"https://pith.science/pith/FRZX3EGIZSB23OSOECRDF4UFDE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FRZX3EGIZSB23OSOECRDF4UFDE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:FRZX3EGIZSB23OSOECRDF4UFDE","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":"14805d63505dfd70e2ff9b7786b73bcb93c942b0458fc252961aab8d2f932616","cross_cats_sorted":["cs.AI","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-07-22T14:57:13Z","title_canon_sha256":"227cdf252373a57f7aa3991eb400a728eef062cae45e22f0b12acdb0d1c304d6"},"schema_version":"1.0","source":{"id":"1907.09361","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.09361","created_at":"2026-05-17T23:39:59Z"},{"alias_kind":"arxiv_version","alias_value":"1907.09361v1","created_at":"2026-05-17T23:39:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.09361","created_at":"2026-05-17T23:39:59Z"},{"alias_kind":"pith_short_12","alias_value":"FRZX3EGIZSB2","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"FRZX3EGIZSB23OSO","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"FRZX3EGI","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:dcf80db6838fe641f5b887e1b163e57fad3b345daeca4e5eda6cae395744380b","target":"graph","created_at":"2026-05-17T23:39:59Z","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":"Question answering has emerged as an intuitive way of querying structured data sources, and has attracted significant advancements over the years. In this article, we provide an overview over these recent advancements, focusing on neural network based question answering systems over knowledge graphs. We introduce readers to the challenges in the tasks, current paradigms of approaches, discuss notable advancements, and outline the emerging trends in the field. Through this article, we aim to provide newcomers to the field with a suitable entry point, and ease their process of making informed de","authors_text":"Asja Fischer, Denis Lukovnikov, Gaurav Maheshwari, Jens Lehmann, Nilesh Chakraborty, Priyansh Trivedi","cross_cats":["cs.AI","cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-07-22T14:57:13Z","title":"Introduction to Neural Network based Approaches for Question Answering over Knowledge Graphs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.09361","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":"sha256:0adfbdf5a9f8c8c5b983e162d822dceaba4078b8dcd2c052d609a52c2872a586","target":"record","created_at":"2026-05-17T23:39:59Z","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":"14805d63505dfd70e2ff9b7786b73bcb93c942b0458fc252961aab8d2f932616","cross_cats_sorted":["cs.AI","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-07-22T14:57:13Z","title_canon_sha256":"227cdf252373a57f7aa3991eb400a728eef062cae45e22f0b12acdb0d1c304d6"},"schema_version":"1.0","source":{"id":"1907.09361","kind":"arxiv","version":1}},"canonical_sha256":"2c737d90c8cc83adba4e20a232f2851928ba7554711e424ea2c77f32ac980966","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2c737d90c8cc83adba4e20a232f2851928ba7554711e424ea2c77f32ac980966","first_computed_at":"2026-05-17T23:39:59.404394Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:39:59.404394Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0eSqeTlDvi7+zwAXV+H3Z9uNaj0XzcbOJvs15DYlZJxkzVr+vH1PPx3NglpvwxJoh6gflQ108aAVXHRXWcCaDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:39:59.404772Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.09361","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0adfbdf5a9f8c8c5b983e162d822dceaba4078b8dcd2c052d609a52c2872a586","sha256:dcf80db6838fe641f5b887e1b163e57fad3b345daeca4e5eda6cae395744380b"],"state_sha256":"d70ba774f7c58881f86e8d9ebd8c9824df94603734e1188e60138927128b7666"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y5t+gdKQ1DqIc7Xbl6LRnvIFLs1Tgc5/SdU6Wa6H3guDtRKO8PB82TSdRpwzKO2POooFW12LyLQEG/1gw6mTBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T23:02:31.271136Z","bundle_sha256":"22d15211650954a91417663997c933718066892ce2912a6345c056c136b66cc9"}}