{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:V2MYQUWW7RY7F2MX7WJ77TBKKO","short_pith_number":"pith:V2MYQUWW","canonical_record":{"source":{"id":"2104.00569","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-04-01T15:49:05Z","cross_cats_sorted":[],"title_canon_sha256":"9195bbbf9d40730e675a24b12b7a4920dbf6f864f3d0696a907b3ea328df73aa","abstract_canon_sha256":"566a26a38c5258a5fa1ddaae901910e9e793b3e7535326dfa743d6dd7d0d3d97"},"schema_version":"1.0"},"canonical_sha256":"ae998852d6fc71f2e997fd93ffcc2a5384e01c2882ba525240a1f63533e65e34","source":{"kind":"arxiv","id":"2104.00569","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.00569","created_at":"2026-07-05T03:37:25Z"},{"alias_kind":"arxiv_version","alias_value":"2104.00569v2","created_at":"2026-07-05T03:37:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.00569","created_at":"2026-07-05T03:37:25Z"},{"alias_kind":"pith_short_12","alias_value":"V2MYQUWW7RY7","created_at":"2026-07-05T03:37:25Z"},{"alias_kind":"pith_short_16","alias_value":"V2MYQUWW7RY7F2MX","created_at":"2026-07-05T03:37:25Z"},{"alias_kind":"pith_short_8","alias_value":"V2MYQUWW","created_at":"2026-07-05T03:37:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:V2MYQUWW7RY7F2MX7WJ77TBKKO","target":"record","payload":{"canonical_record":{"source":{"id":"2104.00569","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-04-01T15:49:05Z","cross_cats_sorted":[],"title_canon_sha256":"9195bbbf9d40730e675a24b12b7a4920dbf6f864f3d0696a907b3ea328df73aa","abstract_canon_sha256":"566a26a38c5258a5fa1ddaae901910e9e793b3e7535326dfa743d6dd7d0d3d97"},"schema_version":"1.0"},"canonical_sha256":"ae998852d6fc71f2e997fd93ffcc2a5384e01c2882ba525240a1f63533e65e34","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:37:25.701729Z","signature_b64":"/yoZplGtIa4KWujKTIxeDZvgzrL7ew6P2eFIio4mxDQ6AmR0zAiZKKrrZ9htRADuv/pa6EERL+BMqksWaziNAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ae998852d6fc71f2e997fd93ffcc2a5384e01c2882ba525240a1f63533e65e34","last_reissued_at":"2026-07-05T03:37:25.701273Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:37:25.701273Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2104.00569","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":"2026-07-05T03:37:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SMiQOQ/hftKZpwzd0myS3Juf2PWQrNwgoSM0Tet+hRcqpeI2JICjb3h9pNGqoGR2Yp/oGNMDzcFDPfC4/Jc+AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T16:11:26.407457Z"},"content_sha256":"df1627a91838e90ca7159a301520fa60de8ba1cbb31eaf69fa506927cb2d77f9","schema_version":"1.0","event_id":"sha256:df1627a91838e90ca7159a301520fa60de8ba1cbb31eaf69fa506927cb2d77f9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:V2MYQUWW7RY7F2MX7WJ77TBKKO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Learning to Measure: Adaptive Informationally Complete Generalized Measurements for Quantum Algorithms","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Boris Sokolov, Francesco Tacchino, Guglielmo Mazzola, Guillermo Garc\\'ia-P\\'erez, Ivano Tavernelli, Matteo A. C. Rossi, Panagiotis Kl. Barkoutsos, Sabrina Maniscalco","submitted_at":"2021-04-01T15:49:05Z","abstract_excerpt":"Many prominent quantum computing algorithms with applications in fields such as chemistry and materials science require a large number of measurements, which represents an important roadblock for future real-world use cases. We introduce a novel approach to tackle this problem through an adaptive measurement scheme. We present an algorithm that optimizes informationally complete positive operator-valued measurements (POVMs) on the fly in order to minimize the statistical fluctuations in the estimation of relevant cost functions. We show its advantage by improving the efficiency of the variatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.00569","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/2104.00569/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":"2026-07-05T03:37:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9d9Dpeegin6a46d28rPzc0PYikOXgKyc2gTvq9nwL4+BkVAYHx0SUsdS+PxP9uQuoq14avZdoYPGHlHLUfKoCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T16:11:26.408415Z"},"content_sha256":"ba7b117941553ac67c44cd7017e5ea3984f0c1a9081df1ef36b9a0ff0e983457","schema_version":"1.0","event_id":"sha256:ba7b117941553ac67c44cd7017e5ea3984f0c1a9081df1ef36b9a0ff0e983457"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V2MYQUWW7RY7F2MX7WJ77TBKKO/bundle.json","state_url":"https://pith.science/pith/V2MYQUWW7RY7F2MX7WJ77TBKKO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V2MYQUWW7RY7F2MX7WJ77TBKKO/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":"2026-08-09T16:11:26Z","links":{"resolver":"https://pith.science/pith/V2MYQUWW7RY7F2MX7WJ77TBKKO","bundle":"https://pith.science/pith/V2MYQUWW7RY7F2MX7WJ77TBKKO/bundle.json","state":"https://pith.science/pith/V2MYQUWW7RY7F2MX7WJ77TBKKO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V2MYQUWW7RY7F2MX7WJ77TBKKO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:V2MYQUWW7RY7F2MX7WJ77TBKKO","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":"566a26a38c5258a5fa1ddaae901910e9e793b3e7535326dfa743d6dd7d0d3d97","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-04-01T15:49:05Z","title_canon_sha256":"9195bbbf9d40730e675a24b12b7a4920dbf6f864f3d0696a907b3ea328df73aa"},"schema_version":"1.0","source":{"id":"2104.00569","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.00569","created_at":"2026-07-05T03:37:25Z"},{"alias_kind":"arxiv_version","alias_value":"2104.00569v2","created_at":"2026-07-05T03:37:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.00569","created_at":"2026-07-05T03:37:25Z"},{"alias_kind":"pith_short_12","alias_value":"V2MYQUWW7RY7","created_at":"2026-07-05T03:37:25Z"},{"alias_kind":"pith_short_16","alias_value":"V2MYQUWW7RY7F2MX","created_at":"2026-07-05T03:37:25Z"},{"alias_kind":"pith_short_8","alias_value":"V2MYQUWW","created_at":"2026-07-05T03:37:25Z"}],"graph_snapshots":[{"event_id":"sha256:ba7b117941553ac67c44cd7017e5ea3984f0c1a9081df1ef36b9a0ff0e983457","target":"graph","created_at":"2026-07-05T03:37:25Z","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/2104.00569/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Many prominent quantum computing algorithms with applications in fields such as chemistry and materials science require a large number of measurements, which represents an important roadblock for future real-world use cases. We introduce a novel approach to tackle this problem through an adaptive measurement scheme. We present an algorithm that optimizes informationally complete positive operator-valued measurements (POVMs) on the fly in order to minimize the statistical fluctuations in the estimation of relevant cost functions. We show its advantage by improving the efficiency of the variatio","authors_text":"Boris Sokolov, Francesco Tacchino, Guglielmo Mazzola, Guillermo Garc\\'ia-P\\'erez, Ivano Tavernelli, Matteo A. C. Rossi, Panagiotis Kl. Barkoutsos, Sabrina Maniscalco","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-04-01T15:49:05Z","title":"Learning to Measure: Adaptive Informationally Complete Generalized Measurements for Quantum Algorithms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.00569","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:df1627a91838e90ca7159a301520fa60de8ba1cbb31eaf69fa506927cb2d77f9","target":"record","created_at":"2026-07-05T03:37:25Z","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":"566a26a38c5258a5fa1ddaae901910e9e793b3e7535326dfa743d6dd7d0d3d97","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-04-01T15:49:05Z","title_canon_sha256":"9195bbbf9d40730e675a24b12b7a4920dbf6f864f3d0696a907b3ea328df73aa"},"schema_version":"1.0","source":{"id":"2104.00569","kind":"arxiv","version":2}},"canonical_sha256":"ae998852d6fc71f2e997fd93ffcc2a5384e01c2882ba525240a1f63533e65e34","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ae998852d6fc71f2e997fd93ffcc2a5384e01c2882ba525240a1f63533e65e34","first_computed_at":"2026-07-05T03:37:25.701273Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:37:25.701273Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/yoZplGtIa4KWujKTIxeDZvgzrL7ew6P2eFIio4mxDQ6AmR0zAiZKKrrZ9htRADuv/pa6EERL+BMqksWaziNAw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:37:25.701729Z","signed_message":"canonical_sha256_bytes"},"source_id":"2104.00569","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df1627a91838e90ca7159a301520fa60de8ba1cbb31eaf69fa506927cb2d77f9","sha256:ba7b117941553ac67c44cd7017e5ea3984f0c1a9081df1ef36b9a0ff0e983457"],"state_sha256":"04930fef03067c2e29e8aba1837da7803b675285c97c78063bf00c92b0d9169e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sCIT+LHX5mDDZZRRAmjh1mdcdaOYpqPjMhr3oqtlfWerM3FbelUwz8036CB6UypDyuhD7xF9JBc463nQvY2LBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T16:11:26.413463Z","bundle_sha256":"efe6dabf73e3cc5fe208011ef10daf1c0c8c8eff4d01044236aedbfb2d58d2dd"}}