{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:IV5LKATAPEVOFBXHYWYY66CKE5","short_pith_number":"pith:IV5LKATA","canonical_record":{"source":{"id":"1704.02322","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-04-07T18:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"5c310430e419d2be1dcdbac83a8edec359888d27aa25c5539cc563cfa7b7e3c0","abstract_canon_sha256":"b765f1411cff1a2808a0461b7134ed5a5b996391065d06a902fee8c61e4a8c6a"},"schema_version":"1.0"},"canonical_sha256":"457ab50260792ae286e7c5b18f784a2769718f2caf980297c532fa4059e2644e","source":{"kind":"arxiv","id":"1704.02322","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.02322","created_at":"2026-07-05T00:00:11Z"},{"alias_kind":"arxiv_version","alias_value":"1704.02322v2","created_at":"2026-07-05T00:00:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.02322","created_at":"2026-07-05T00:00:11Z"},{"alias_kind":"pith_short_12","alias_value":"IV5LKATAPEVO","created_at":"2026-07-05T00:00:11Z"},{"alias_kind":"pith_short_16","alias_value":"IV5LKATAPEVOFBXH","created_at":"2026-07-05T00:00:11Z"},{"alias_kind":"pith_short_8","alias_value":"IV5LKATA","created_at":"2026-07-05T00:00:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:IV5LKATAPEVOFBXHYWYY66CKE5","target":"record","payload":{"canonical_record":{"source":{"id":"1704.02322","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-04-07T18:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"5c310430e419d2be1dcdbac83a8edec359888d27aa25c5539cc563cfa7b7e3c0","abstract_canon_sha256":"b765f1411cff1a2808a0461b7134ed5a5b996391065d06a902fee8c61e4a8c6a"},"schema_version":"1.0"},"canonical_sha256":"457ab50260792ae286e7c5b18f784a2769718f2caf980297c532fa4059e2644e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:00:11.716308Z","signature_b64":"Zv4yeLt/GuBOkDiDdgrumosuPlLBqCtoCb4QqzcYRF2qaXlDgD9KkVDeFN1eaqKK7ESQguRlHy7FX9wve8UeBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"457ab50260792ae286e7c5b18f784a2769718f2caf980297c532fa4059e2644e","last_reissued_at":"2026-07-05T00:00:11.715871Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:00:11.715871Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.02322","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:00:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"04Niqox7P60YsJ601qSYggKWSjCVdhmeLCIVAUJlKYaXEXftvyGn0AjH4t188YFolwTCHb8dcfnQL7Wky5XuAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T08:59:24.027492Z"},"content_sha256":"c4a1430784cdbef391fe14cc396be8caec689fce19eaff646a6515ffb06698d2","schema_version":"1.0","event_id":"sha256:c4a1430784cdbef391fe14cc396be8caec689fce19eaff646a6515ffb06698d2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:IV5LKATAPEVOFBXHYWYY66CKE5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Automated Lensing Learner: Automated Strong Lensing Identification with a Computer Vision Technique","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Camille Avestruz, Hanjue Zhu, Matthew Lightman, Nan Li, Thomas E. Collett, Wentao Luo","submitted_at":"2017-04-07T18:00:02Z","abstract_excerpt":"Forthcoming surveys such as the Large Synoptic Survey Telescope (LSST) and Euclid necessitate automatic and efficient identification methods of strong lensing systems. We present a strong lensing identification approach that utilizes a feature extraction method from computer vision, the Histogram of Oriented Gradients (HOG), to capture edge patterns of arcs. We train a supervised classifier model on the HOG of mock strong galaxy-galaxy lens images similar to observations from the Hubble Space Telescope (HST) and LSST. We assess model performance with the area under the curve (AUC) of a Receive"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.02322","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1704.02322/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:00:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oChBR25mfxuP+j9OXqGxLAz2PuFuWXemwiSOCX0xFIfhOaHD259q9FoyBe+v8QfOwCSjs0Owor0HzGA08Wr4BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T08:59:24.028049Z"},"content_sha256":"d06ce1829f04cb99e9665db422b079fe6d32ed0b6df361def65227707de55108","schema_version":"1.0","event_id":"sha256:d06ce1829f04cb99e9665db422b079fe6d32ed0b6df361def65227707de55108"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IV5LKATAPEVOFBXHYWYY66CKE5/bundle.json","state_url":"https://pith.science/pith/IV5LKATAPEVOFBXHYWYY66CKE5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IV5LKATAPEVOFBXHYWYY66CKE5/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":"2026-08-06T08:59:24Z","links":{"resolver":"https://pith.science/pith/IV5LKATAPEVOFBXHYWYY66CKE5","bundle":"https://pith.science/pith/IV5LKATAPEVOFBXHYWYY66CKE5/bundle.json","state":"https://pith.science/pith/IV5LKATAPEVOFBXHYWYY66CKE5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IV5LKATAPEVOFBXHYWYY66CKE5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:IV5LKATAPEVOFBXHYWYY66CKE5","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":"b765f1411cff1a2808a0461b7134ed5a5b996391065d06a902fee8c61e4a8c6a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-04-07T18:00:02Z","title_canon_sha256":"5c310430e419d2be1dcdbac83a8edec359888d27aa25c5539cc563cfa7b7e3c0"},"schema_version":"1.0","source":{"id":"1704.02322","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.02322","created_at":"2026-07-05T00:00:11Z"},{"alias_kind":"arxiv_version","alias_value":"1704.02322v2","created_at":"2026-07-05T00:00:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.02322","created_at":"2026-07-05T00:00:11Z"},{"alias_kind":"pith_short_12","alias_value":"IV5LKATAPEVO","created_at":"2026-07-05T00:00:11Z"},{"alias_kind":"pith_short_16","alias_value":"IV5LKATAPEVOFBXH","created_at":"2026-07-05T00:00:11Z"},{"alias_kind":"pith_short_8","alias_value":"IV5LKATA","created_at":"2026-07-05T00:00:11Z"}],"graph_snapshots":[{"event_id":"sha256:d06ce1829f04cb99e9665db422b079fe6d32ed0b6df361def65227707de55108","target":"graph","created_at":"2026-07-05T00:00:11Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1704.02322/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Forthcoming surveys such as the Large Synoptic Survey Telescope (LSST) and Euclid necessitate automatic and efficient identification methods of strong lensing systems. We present a strong lensing identification approach that utilizes a feature extraction method from computer vision, the Histogram of Oriented Gradients (HOG), to capture edge patterns of arcs. We train a supervised classifier model on the HOG of mock strong galaxy-galaxy lens images similar to observations from the Hubble Space Telescope (HST) and LSST. We assess model performance with the area under the curve (AUC) of a Receive","authors_text":"Camille Avestruz, Hanjue Zhu, Matthew Lightman, Nan Li, Thomas E. Collett, Wentao Luo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-04-07T18:00:02Z","title":"Automated Lensing Learner: Automated Strong Lensing Identification with a Computer Vision Technique"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.02322","kind":"arxiv","version":2},"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:c4a1430784cdbef391fe14cc396be8caec689fce19eaff646a6515ffb06698d2","target":"record","created_at":"2026-07-05T00:00:11Z","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":"b765f1411cff1a2808a0461b7134ed5a5b996391065d06a902fee8c61e4a8c6a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-04-07T18:00:02Z","title_canon_sha256":"5c310430e419d2be1dcdbac83a8edec359888d27aa25c5539cc563cfa7b7e3c0"},"schema_version":"1.0","source":{"id":"1704.02322","kind":"arxiv","version":2}},"canonical_sha256":"457ab50260792ae286e7c5b18f784a2769718f2caf980297c532fa4059e2644e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"457ab50260792ae286e7c5b18f784a2769718f2caf980297c532fa4059e2644e","first_computed_at":"2026-07-05T00:00:11.715871Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:00:11.715871Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Zv4yeLt/GuBOkDiDdgrumosuPlLBqCtoCb4QqzcYRF2qaXlDgD9KkVDeFN1eaqKK7ESQguRlHy7FX9wve8UeBw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:00:11.716308Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.02322","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c4a1430784cdbef391fe14cc396be8caec689fce19eaff646a6515ffb06698d2","sha256:d06ce1829f04cb99e9665db422b079fe6d32ed0b6df361def65227707de55108"],"state_sha256":"193ddaf7ef56b17e30e845bf125ca4c44951b3dcf5fc5802bcdd68f260c7f7c4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wzhNUCkkwTzr5PuPKJ+QolrOuyLmcFHi8rchgTm7IHIKdsx9l0vbYndGL2LTyfNxRKRbhoMk8qs1NspwR4xoDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T08:59:24.031401Z","bundle_sha256":"34ad8e9ad4d25eef9764ca0ab431d0e7a5b331410334efa1368fea0780ae8471"}}