{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:ZGLHQUKCACBZK6WPZKW3435MDW","short_pith_number":"pith:ZGLHQUKC","canonical_record":{"source":{"id":"1906.08636","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.ST","submitted_at":"2019-06-20T14:04:59Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"b292d5889c51404fbda756008714e0006cc0b1eeb8558c3a79adfd5aa0ac606b","abstract_canon_sha256":"d12c86e32a301df7821282fdd317d11457130a37bdc8f5e6e5459a79908c00d4"},"schema_version":"1.0"},"canonical_sha256":"c9967851420083957acfcaadbe6fac1d8932e6c351452b12b4063379d62887ed","source":{"kind":"arxiv","id":"1906.08636","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.08636","created_at":"2026-05-17T23:42:50Z"},{"alias_kind":"arxiv_version","alias_value":"1906.08636v1","created_at":"2026-05-17T23:42:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.08636","created_at":"2026-05-17T23:42:50Z"},{"alias_kind":"pith_short_12","alias_value":"ZGLHQUKCACBZ","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"ZGLHQUKCACBZK6WP","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"ZGLHQUKC","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:ZGLHQUKCACBZK6WPZKW3435MDW","target":"record","payload":{"canonical_record":{"source":{"id":"1906.08636","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.ST","submitted_at":"2019-06-20T14:04:59Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"b292d5889c51404fbda756008714e0006cc0b1eeb8558c3a79adfd5aa0ac606b","abstract_canon_sha256":"d12c86e32a301df7821282fdd317d11457130a37bdc8f5e6e5459a79908c00d4"},"schema_version":"1.0"},"canonical_sha256":"c9967851420083957acfcaadbe6fac1d8932e6c351452b12b4063379d62887ed","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:50.034049Z","signature_b64":"fcXpR2zKmKqFKhmDXjg5URqZLmRKzAMrAn7Ah8l2ZpAOZnI3NoslzaNL2N6HawZ1NJS7j+hlz/aIwc+Glm5tDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c9967851420083957acfcaadbe6fac1d8932e6c351452b12b4063379d62887ed","last_reissued_at":"2026-05-17T23:42:50.033526Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:50.033526Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.08636","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":"2026-05-17T23:42:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4B1ebI2Yz/bGyM3JelMedcp8Nw7QrEti8uV3E4bX4nawGnyE1zrLRUXqckOlQVjdflT7Y0ebrPhP8lc9/y0zAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T10:37:18.761129Z"},"content_sha256":"cbba4cad0cfda54a0f3f320d4e6ffe36af66213f4e4bd1cf2a9b25a52806641a","schema_version":"1.0","event_id":"sha256:cbba4cad0cfda54a0f3f320d4e6ffe36af66213f4e4bd1cf2a9b25a52806641a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:ZGLHQUKCACBZK6WPZKW3435MDW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Investment Ranking Challenge: Identifying the best performing stocks based on their semi-annual returns","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"q-fin.ST","authors_text":"Benjamin Harlander, Joe Byrum, Kirill Romanov, Lance Rane, Marcel Salathe, Mehmet Koseoglu, Pranoot Hatwar, Shanka Subhra Mondal, Sharada Prasanna Mohanty, Wei-Kai Liu","submitted_at":"2019-06-20T14:04:59Z","abstract_excerpt":"In the IEEE Investment ranking challenge 2018, participants were asked to build a model which would identify the best performing stocks based on their returns over a forward six months window. Anonymized financial predictors and semi-annual returns were provided for a group of anonymized stocks from 1996 to 2017, which were divided into 42 non-overlapping six months period. The second half of 2017 was used as an out-of-sample test of the model's performance. Metrics used were Spearman's Rank Correlation Coefficient and Normalized Discounted Cumulative Gain (NDCG) of the top 20% of a model's pr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.08636","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":"2026-05-17T23:42:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iz0OGINvrQwlKGBGLNu46qO+/gYsZ68u6DwPrQNleNN5gnxP2m365C8Tj2ycm9VuOYbfKvaRvU3wymELqFhmBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T10:37:18.761527Z"},"content_sha256":"57203cb188da13de5d73dab8cc393e0345e690a49649f559f39b01434f5a6d9b","schema_version":"1.0","event_id":"sha256:57203cb188da13de5d73dab8cc393e0345e690a49649f559f39b01434f5a6d9b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZGLHQUKCACBZK6WPZKW3435MDW/bundle.json","state_url":"https://pith.science/pith/ZGLHQUKCACBZK6WPZKW3435MDW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZGLHQUKCACBZK6WPZKW3435MDW/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":"2026-05-26T10:37:18Z","links":{"resolver":"https://pith.science/pith/ZGLHQUKCACBZK6WPZKW3435MDW","bundle":"https://pith.science/pith/ZGLHQUKCACBZK6WPZKW3435MDW/bundle.json","state":"https://pith.science/pith/ZGLHQUKCACBZK6WPZKW3435MDW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZGLHQUKCACBZK6WPZKW3435MDW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:ZGLHQUKCACBZK6WPZKW3435MDW","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":"d12c86e32a301df7821282fdd317d11457130a37bdc8f5e6e5459a79908c00d4","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.ST","submitted_at":"2019-06-20T14:04:59Z","title_canon_sha256":"b292d5889c51404fbda756008714e0006cc0b1eeb8558c3a79adfd5aa0ac606b"},"schema_version":"1.0","source":{"id":"1906.08636","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.08636","created_at":"2026-05-17T23:42:50Z"},{"alias_kind":"arxiv_version","alias_value":"1906.08636v1","created_at":"2026-05-17T23:42:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.08636","created_at":"2026-05-17T23:42:50Z"},{"alias_kind":"pith_short_12","alias_value":"ZGLHQUKCACBZ","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"ZGLHQUKCACBZK6WP","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"ZGLHQUKC","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:57203cb188da13de5d73dab8cc393e0345e690a49649f559f39b01434f5a6d9b","target":"graph","created_at":"2026-05-17T23:42:50Z","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":"In the IEEE Investment ranking challenge 2018, participants were asked to build a model which would identify the best performing stocks based on their returns over a forward six months window. Anonymized financial predictors and semi-annual returns were provided for a group of anonymized stocks from 1996 to 2017, which were divided into 42 non-overlapping six months period. The second half of 2017 was used as an out-of-sample test of the model's performance. Metrics used were Spearman's Rank Correlation Coefficient and Normalized Discounted Cumulative Gain (NDCG) of the top 20% of a model's pr","authors_text":"Benjamin Harlander, Joe Byrum, Kirill Romanov, Lance Rane, Marcel Salathe, Mehmet Koseoglu, Pranoot Hatwar, Shanka Subhra Mondal, Sharada Prasanna Mohanty, Wei-Kai Liu","cross_cats":["cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.ST","submitted_at":"2019-06-20T14:04:59Z","title":"Investment Ranking Challenge: Identifying the best performing stocks based on their semi-annual returns"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.08636","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:cbba4cad0cfda54a0f3f320d4e6ffe36af66213f4e4bd1cf2a9b25a52806641a","target":"record","created_at":"2026-05-17T23:42:50Z","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":"d12c86e32a301df7821282fdd317d11457130a37bdc8f5e6e5459a79908c00d4","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.ST","submitted_at":"2019-06-20T14:04:59Z","title_canon_sha256":"b292d5889c51404fbda756008714e0006cc0b1eeb8558c3a79adfd5aa0ac606b"},"schema_version":"1.0","source":{"id":"1906.08636","kind":"arxiv","version":1}},"canonical_sha256":"c9967851420083957acfcaadbe6fac1d8932e6c351452b12b4063379d62887ed","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c9967851420083957acfcaadbe6fac1d8932e6c351452b12b4063379d62887ed","first_computed_at":"2026-05-17T23:42:50.033526Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:50.033526Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fcXpR2zKmKqFKhmDXjg5URqZLmRKzAMrAn7Ah8l2ZpAOZnI3NoslzaNL2N6HawZ1NJS7j+hlz/aIwc+Glm5tDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:50.034049Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.08636","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cbba4cad0cfda54a0f3f320d4e6ffe36af66213f4e4bd1cf2a9b25a52806641a","sha256:57203cb188da13de5d73dab8cc393e0345e690a49649f559f39b01434f5a6d9b"],"state_sha256":"5b571ff785c3bcf87e8a9672265d1fb28ce00d4a2cd2e4de71368074e9d0e341"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nNYDQX13Jsdsi3zY3iJ97Kgy4w4uC8wEVqH0LmFKY87M9mBXfRJms276ujFcSO1HLeVCvFjre3R52gpQlw+zCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T10:37:18.764069Z","bundle_sha256":"5c8b3bc66a83ca1649b948ccbc5c315fa55c972dcca54ffed03c1636339ab2c0"}}