{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:LU4ZGL3INVC3YOIGYK56YW2RZK","short_pith_number":"pith:LU4ZGL3I","canonical_record":{"source":{"id":"1805.06566","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CL","submitted_at":"2018-05-17T00:59:22Z","cross_cats_sorted":[],"title_canon_sha256":"93712bd43bf68afee76d2c4744d7ad4cdaa77f4d674f7f39c914f16aa671ea0f","abstract_canon_sha256":"2cd01f2cd4d6569ebf7ea0eb584b8d40d69a3259146f22316b63817f6c66c2a2"},"schema_version":"1.0"},"canonical_sha256":"5d39932f686d45bc3906c2bbec5b51caaa4ac16f726b7d3e06464347341842a6","source":{"kind":"arxiv","id":"1805.06566","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.06566","created_at":"2026-05-18T00:15:44Z"},{"alias_kind":"arxiv_version","alias_value":"1805.06566v1","created_at":"2026-05-18T00:15:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.06566","created_at":"2026-05-18T00:15:44Z"},{"alias_kind":"pith_short_12","alias_value":"LU4ZGL3INVC3","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"LU4ZGL3INVC3YOIG","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"LU4ZGL3I","created_at":"2026-05-18T12:32:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:LU4ZGL3INVC3YOIGYK56YW2RZK","target":"record","payload":{"canonical_record":{"source":{"id":"1805.06566","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CL","submitted_at":"2018-05-17T00:59:22Z","cross_cats_sorted":[],"title_canon_sha256":"93712bd43bf68afee76d2c4744d7ad4cdaa77f4d674f7f39c914f16aa671ea0f","abstract_canon_sha256":"2cd01f2cd4d6569ebf7ea0eb584b8d40d69a3259146f22316b63817f6c66c2a2"},"schema_version":"1.0"},"canonical_sha256":"5d39932f686d45bc3906c2bbec5b51caaa4ac16f726b7d3e06464347341842a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:44.040774Z","signature_b64":"tvora1Al+aIgHKOclx90iZl7yxMPI9N3diut8ptgkpbCmYUhS/LKTqDuTiydhhbkO1TRT+fX1t65xHlui0zMCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5d39932f686d45bc3906c2bbec5b51caaa4ac16f726b7d3e06464347341842a6","last_reissued_at":"2026-05-18T00:15:44.040050Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:44.040050Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.06566","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":"2026-05-18T00:15:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F5flGYYaDNKYH0b71Obh8kWbfXS7Q5kKsMdOsfhMMp+pGhDTQUMDBBgdoh4pNtxT5gKpWE9fUKZnJLcbMddgBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T11:29:02.372469Z"},"content_sha256":"b241ea75641d974e8af6ec052a7158de4ebcb4814e44f40ba7171c86bc382c39","schema_version":"1.0","event_id":"sha256:b241ea75641d974e8af6ec052a7158de4ebcb4814e44f40ba7171c86bc382c39"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:LU4ZGL3INVC3YOIGYK56YW2RZK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Content-based Popularity Prediction of Online Petitions Using a Deep Regression Model","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Shivashankar Subramanian, Timothy Baldwin, Trevor Cohn","submitted_at":"2018-05-17T00:59:22Z","abstract_excerpt":"Online petitions are a cost-effective way for citizens to collectively engage with policy-makers in a democracy. Predicting the popularity of a petition --- commonly measured by its signature count --- based on its textual content has utility for policy-makers as well as those posting the petition. In this work, we model this task using CNN regression with an auxiliary ordinal regression objective. We demonstrate the effectiveness of our proposed approach using UK and US government petition datasets."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.06566","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":"2026-05-18T00:15:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fnbS3F6u9gSxLBzfCidylW68j4PWyg5WO0EncTqe8pgBe66YhySzHfwjfnlxKmkVLHWtppnVbarlsUqF8TiICA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T11:29:02.372822Z"},"content_sha256":"a3462f0f2ce6ca8e5e2122eb9feda755858348d36a437b273333f7c1055fd373","schema_version":"1.0","event_id":"sha256:a3462f0f2ce6ca8e5e2122eb9feda755858348d36a437b273333f7c1055fd373"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LU4ZGL3INVC3YOIGYK56YW2RZK/bundle.json","state_url":"https://pith.science/pith/LU4ZGL3INVC3YOIGYK56YW2RZK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LU4ZGL3INVC3YOIGYK56YW2RZK/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":"2026-06-03T11:29:02Z","links":{"resolver":"https://pith.science/pith/LU4ZGL3INVC3YOIGYK56YW2RZK","bundle":"https://pith.science/pith/LU4ZGL3INVC3YOIGYK56YW2RZK/bundle.json","state":"https://pith.science/pith/LU4ZGL3INVC3YOIGYK56YW2RZK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LU4ZGL3INVC3YOIGYK56YW2RZK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:LU4ZGL3INVC3YOIGYK56YW2RZK","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":"2cd01f2cd4d6569ebf7ea0eb584b8d40d69a3259146f22316b63817f6c66c2a2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CL","submitted_at":"2018-05-17T00:59:22Z","title_canon_sha256":"93712bd43bf68afee76d2c4744d7ad4cdaa77f4d674f7f39c914f16aa671ea0f"},"schema_version":"1.0","source":{"id":"1805.06566","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.06566","created_at":"2026-05-18T00:15:44Z"},{"alias_kind":"arxiv_version","alias_value":"1805.06566v1","created_at":"2026-05-18T00:15:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.06566","created_at":"2026-05-18T00:15:44Z"},{"alias_kind":"pith_short_12","alias_value":"LU4ZGL3INVC3","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"LU4ZGL3INVC3YOIG","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"LU4ZGL3I","created_at":"2026-05-18T12:32:37Z"}],"graph_snapshots":[{"event_id":"sha256:a3462f0f2ce6ca8e5e2122eb9feda755858348d36a437b273333f7c1055fd373","target":"graph","created_at":"2026-05-18T00:15:44Z","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":"Online petitions are a cost-effective way for citizens to collectively engage with policy-makers in a democracy. Predicting the popularity of a petition --- commonly measured by its signature count --- based on its textual content has utility for policy-makers as well as those posting the petition. In this work, we model this task using CNN regression with an auxiliary ordinal regression objective. We demonstrate the effectiveness of our proposed approach using UK and US government petition datasets.","authors_text":"Shivashankar Subramanian, Timothy Baldwin, Trevor Cohn","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CL","submitted_at":"2018-05-17T00:59:22Z","title":"Content-based Popularity Prediction of Online Petitions Using a Deep Regression Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.06566","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:b241ea75641d974e8af6ec052a7158de4ebcb4814e44f40ba7171c86bc382c39","target":"record","created_at":"2026-05-18T00:15:44Z","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":"2cd01f2cd4d6569ebf7ea0eb584b8d40d69a3259146f22316b63817f6c66c2a2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CL","submitted_at":"2018-05-17T00:59:22Z","title_canon_sha256":"93712bd43bf68afee76d2c4744d7ad4cdaa77f4d674f7f39c914f16aa671ea0f"},"schema_version":"1.0","source":{"id":"1805.06566","kind":"arxiv","version":1}},"canonical_sha256":"5d39932f686d45bc3906c2bbec5b51caaa4ac16f726b7d3e06464347341842a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5d39932f686d45bc3906c2bbec5b51caaa4ac16f726b7d3e06464347341842a6","first_computed_at":"2026-05-18T00:15:44.040050Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:44.040050Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tvora1Al+aIgHKOclx90iZl7yxMPI9N3diut8ptgkpbCmYUhS/LKTqDuTiydhhbkO1TRT+fX1t65xHlui0zMCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:44.040774Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.06566","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b241ea75641d974e8af6ec052a7158de4ebcb4814e44f40ba7171c86bc382c39","sha256:a3462f0f2ce6ca8e5e2122eb9feda755858348d36a437b273333f7c1055fd373"],"state_sha256":"37bed3218380cb4cdcd81442c55b80ed5a9f2ef315f2ef74998d54da0b7aa2dd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jif6tmYBE6ANB++GeLYxO0tWMwl1Qu1REusln7tFnJjxkVksh5ZRW40EYA4J1e2+She+opKEwd0MaUvmMUa5BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T11:29:02.374802Z","bundle_sha256":"a4844a7686d765957f45dca0f8759abb3b38e09b43f2c0ae61cc06518c13e069"}}