{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:M5ZWEFQ4F5YQSJH53XA3Z5Q5CW","short_pith_number":"pith:M5ZWEFQ4","canonical_record":{"source":{"id":"1811.06131","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-11-15T00:53:47Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"d081ee031f46a116a9141839e82db90f0aac32df71bc5f072d0d06b4f73f85af","abstract_canon_sha256":"a7fc9708db9c9661a78513b9dee9870029e8c15c746d195e209f9de8f662945a"},"schema_version":"1.0"},"canonical_sha256":"677362161c2f710924fdddc1bcf61d1580c0aad93dc1911c94fe44541839905d","source":{"kind":"arxiv","id":"1811.06131","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.06131","created_at":"2026-05-18T00:00:38Z"},{"alias_kind":"arxiv_version","alias_value":"1811.06131v1","created_at":"2026-05-18T00:00:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.06131","created_at":"2026-05-18T00:00:38Z"},{"alias_kind":"pith_short_12","alias_value":"M5ZWEFQ4F5YQ","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"M5ZWEFQ4F5YQSJH5","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"M5ZWEFQ4","created_at":"2026-05-18T12:32:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:M5ZWEFQ4F5YQSJH53XA3Z5Q5CW","target":"record","payload":{"canonical_record":{"source":{"id":"1811.06131","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-11-15T00:53:47Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"d081ee031f46a116a9141839e82db90f0aac32df71bc5f072d0d06b4f73f85af","abstract_canon_sha256":"a7fc9708db9c9661a78513b9dee9870029e8c15c746d195e209f9de8f662945a"},"schema_version":"1.0"},"canonical_sha256":"677362161c2f710924fdddc1bcf61d1580c0aad93dc1911c94fe44541839905d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:38.564175Z","signature_b64":"0Rfoy1qbN3bIQspdS5mUKYYO2668/5LNS5oMlWnvKDIZDYYLc8l0JBzLvBXhGH6djO4CH/4JZyxqqqzmBi7kDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"677362161c2f710924fdddc1bcf61d1580c0aad93dc1911c94fe44541839905d","last_reissued_at":"2026-05-18T00:00:38.563723Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:38.563723Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.06131","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":"2026-05-18T00:00:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C+ZRpBN4bYiCXyWmhR0zp2mRhZ8BbyxBBijtaU88Wz5/8MpzvVRBLskW3X6KF9G/W94pgdZQtHimQU9URAArAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T07:09:21.550575Z"},"content_sha256":"dd504ffe70f70e024afa5a48fee6f8a2114a21875bbda18d83e2e50b4d8ac81a","schema_version":"1.0","event_id":"sha256:dd504ffe70f70e024afa5a48fee6f8a2114a21875bbda18d83e2e50b4d8ac81a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:M5ZWEFQ4F5YQSJH53XA3Z5Q5CW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Application of machine learning techniques at BESIII experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"Beijiang Liu, Guoyi Hou, Lin Shen, Shiming Song, Xian Xiong","submitted_at":"2018-11-15T00:53:47Z","abstract_excerpt":"BESIII is a currently running tau-charm factory with the largest samples of on threshold charm meson pairs, directly produced charmonia and some other unique datasets at BEPCII collider. Machine learning techniques have been employed to improve the performance of BESIII software. The studies for reweighing MC, particle identification and cluster reconstruction for the CGEM (Cylindrical Gas Electron Multiplier) inner tracker are presented."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.06131","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":"2026-05-18T00:00:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fGjL6IZc8AWyhn5N7QRAj8c8bb+K89S2zIOuABgWXRr8icJFXSqU4g6CTbXcIsN2SR+nFdcPjXhtijEXZAlWCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T07:09:21.550916Z"},"content_sha256":"c46d503af0df0081cf3af6e980e43571d53478a91aa59692d7aedd8ea0f11d37","schema_version":"1.0","event_id":"sha256:c46d503af0df0081cf3af6e980e43571d53478a91aa59692d7aedd8ea0f11d37"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M5ZWEFQ4F5YQSJH53XA3Z5Q5CW/bundle.json","state_url":"https://pith.science/pith/M5ZWEFQ4F5YQSJH53XA3Z5Q5CW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M5ZWEFQ4F5YQSJH53XA3Z5Q5CW/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":"2026-06-23T07:09:21Z","links":{"resolver":"https://pith.science/pith/M5ZWEFQ4F5YQSJH53XA3Z5Q5CW","bundle":"https://pith.science/pith/M5ZWEFQ4F5YQSJH53XA3Z5Q5CW/bundle.json","state":"https://pith.science/pith/M5ZWEFQ4F5YQSJH53XA3Z5Q5CW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M5ZWEFQ4F5YQSJH53XA3Z5Q5CW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:M5ZWEFQ4F5YQSJH53XA3Z5Q5CW","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":"a7fc9708db9c9661a78513b9dee9870029e8c15c746d195e209f9de8f662945a","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-11-15T00:53:47Z","title_canon_sha256":"d081ee031f46a116a9141839e82db90f0aac32df71bc5f072d0d06b4f73f85af"},"schema_version":"1.0","source":{"id":"1811.06131","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.06131","created_at":"2026-05-18T00:00:38Z"},{"alias_kind":"arxiv_version","alias_value":"1811.06131v1","created_at":"2026-05-18T00:00:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.06131","created_at":"2026-05-18T00:00:38Z"},{"alias_kind":"pith_short_12","alias_value":"M5ZWEFQ4F5YQ","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"M5ZWEFQ4F5YQSJH5","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"M5ZWEFQ4","created_at":"2026-05-18T12:32:37Z"}],"graph_snapshots":[{"event_id":"sha256:c46d503af0df0081cf3af6e980e43571d53478a91aa59692d7aedd8ea0f11d37","target":"graph","created_at":"2026-05-18T00:00:38Z","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":"BESIII is a currently running tau-charm factory with the largest samples of on threshold charm meson pairs, directly produced charmonia and some other unique datasets at BEPCII collider. Machine learning techniques have been employed to improve the performance of BESIII software. The studies for reweighing MC, particle identification and cluster reconstruction for the CGEM (Cylindrical Gas Electron Multiplier) inner tracker are presented.","authors_text":"Beijiang Liu, Guoyi Hou, Lin Shen, Shiming Song, Xian Xiong","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-11-15T00:53:47Z","title":"Application of machine learning techniques at BESIII experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.06131","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:dd504ffe70f70e024afa5a48fee6f8a2114a21875bbda18d83e2e50b4d8ac81a","target":"record","created_at":"2026-05-18T00:00:38Z","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":"a7fc9708db9c9661a78513b9dee9870029e8c15c746d195e209f9de8f662945a","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-11-15T00:53:47Z","title_canon_sha256":"d081ee031f46a116a9141839e82db90f0aac32df71bc5f072d0d06b4f73f85af"},"schema_version":"1.0","source":{"id":"1811.06131","kind":"arxiv","version":1}},"canonical_sha256":"677362161c2f710924fdddc1bcf61d1580c0aad93dc1911c94fe44541839905d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"677362161c2f710924fdddc1bcf61d1580c0aad93dc1911c94fe44541839905d","first_computed_at":"2026-05-18T00:00:38.563723Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:38.563723Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0Rfoy1qbN3bIQspdS5mUKYYO2668/5LNS5oMlWnvKDIZDYYLc8l0JBzLvBXhGH6djO4CH/4JZyxqqqzmBi7kDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:38.564175Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.06131","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd504ffe70f70e024afa5a48fee6f8a2114a21875bbda18d83e2e50b4d8ac81a","sha256:c46d503af0df0081cf3af6e980e43571d53478a91aa59692d7aedd8ea0f11d37"],"state_sha256":"e643939442e99f38f23f4b176f6f9bae628e1aae45dbf6b0161b61981b257e22"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EYVkcgCLxvnU4j3xtZrYLDypdj4gw2xt857dOrdLymm9AjDSjsAzPSseX9i7C0KTwB3nvK3xYvFJr/NZKYtoAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T07:09:21.552787Z","bundle_sha256":"139259a73a3845a908c1c9f23f44b06a5336a60476c07a632dcf33be4a577ac5"}}