{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:G6SH5RRK4XLSBZKGA2KE3HHZ3F","short_pith_number":"pith:G6SH5RRK","canonical_record":{"source":{"id":"2006.06568","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-06-11T16:19:16Z","cross_cats_sorted":[],"title_canon_sha256":"2c4d9bc28467467e661de4dd09963c7c6b3a9a004d7e4a8435b5e50ffdf218b1","abstract_canon_sha256":"3e5eee1911fb8cc4c64197193ae77383eec6667e48bccad582ae76701d5f7112"},"schema_version":"1.0"},"canonical_sha256":"37a47ec62ae5d720e54606944d9cf9d9772260fa97a85e30bfab42f5d246bf9b","source":{"kind":"arxiv","id":"2006.06568","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.06568","created_at":"2026-07-05T01:09:59Z"},{"alias_kind":"arxiv_version","alias_value":"2006.06568v2","created_at":"2026-07-05T01:09:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.06568","created_at":"2026-07-05T01:09:59Z"},{"alias_kind":"pith_short_12","alias_value":"G6SH5RRK4XLS","created_at":"2026-07-05T01:09:59Z"},{"alias_kind":"pith_short_16","alias_value":"G6SH5RRK4XLSBZKG","created_at":"2026-07-05T01:09:59Z"},{"alias_kind":"pith_short_8","alias_value":"G6SH5RRK","created_at":"2026-07-05T01:09:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:G6SH5RRK4XLSBZKGA2KE3HHZ3F","target":"record","payload":{"canonical_record":{"source":{"id":"2006.06568","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-06-11T16:19:16Z","cross_cats_sorted":[],"title_canon_sha256":"2c4d9bc28467467e661de4dd09963c7c6b3a9a004d7e4a8435b5e50ffdf218b1","abstract_canon_sha256":"3e5eee1911fb8cc4c64197193ae77383eec6667e48bccad582ae76701d5f7112"},"schema_version":"1.0"},"canonical_sha256":"37a47ec62ae5d720e54606944d9cf9d9772260fa97a85e30bfab42f5d246bf9b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:09:59.700846Z","signature_b64":"sBQJ4gZ7qTk/JwIL1m4/1SwtdX2FZY2SrlWm7Ftyg/4/rkVZkvK/r13HJLO0hlGna0MEj1ren4chlQoyM+h5AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"37a47ec62ae5d720e54606944d9cf9d9772260fa97a85e30bfab42f5d246bf9b","last_reissued_at":"2026-07-05T01:09:59.700401Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:09:59.700401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.06568","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":"2026-07-05T01:09:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fpBgdmUperEgqTyc0c3qrQKUabBSWLyU7zeQ8e1ZAHAKBvsyFn9h4XqJqLTS4zmKPbdFQMm4j38lwK9rDtbECQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T01:07:29.378908Z"},"content_sha256":"314aa1aa6c1cf57e3c8c801b62afe18078f81a918ece85929f0c3315fae8a3bd","schema_version":"1.0","event_id":"sha256:314aa1aa6c1cf57e3c8c801b62afe18078f81a918ece85929f0c3315fae8a3bd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:G6SH5RRK4XLSBZKGA2KE3HHZ3F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Learning a Unified Sample Weighting Network for Object Detection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Jingen Liu, Qi Cai, Tao Mei, Ting Yao, Yingwei Pan, Yu Wang","submitted_at":"2020-06-11T16:19:16Z","abstract_excerpt":"Region sampling or weighting is significantly important to the success of modern region-based object detectors. Unlike some previous works, which only focus on \"hard\" samples when optimizing the objective function, we argue that sample weighting should be data-dependent and task-dependent. The importance of a sample for the objective function optimization is determined by its uncertainties to both object classification and bounding box regression tasks. To this end, we devise a general loss function to cover most region-based object detectors with various sampling strategies, and then based on"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.06568","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/2006.06568/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":"2026-07-05T01:09:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0hA0lTWy4cUXCnUvUXo3uvo6XqTMK3dooyYD+cRYyPAgkLZY0ZoFtA1cfRBfA6yUyg9mH9BqrbW8ppbDFiypAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T01:07:29.379418Z"},"content_sha256":"033154b456e953f937ecf9729494f2c5ecaf3cee7242f8e971d81e444a042901","schema_version":"1.0","event_id":"sha256:033154b456e953f937ecf9729494f2c5ecaf3cee7242f8e971d81e444a042901"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G6SH5RRK4XLSBZKGA2KE3HHZ3F/bundle.json","state_url":"https://pith.science/pith/G6SH5RRK4XLSBZKGA2KE3HHZ3F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G6SH5RRK4XLSBZKGA2KE3HHZ3F/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":"2026-08-07T01:07:29Z","links":{"resolver":"https://pith.science/pith/G6SH5RRK4XLSBZKGA2KE3HHZ3F","bundle":"https://pith.science/pith/G6SH5RRK4XLSBZKGA2KE3HHZ3F/bundle.json","state":"https://pith.science/pith/G6SH5RRK4XLSBZKGA2KE3HHZ3F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G6SH5RRK4XLSBZKGA2KE3HHZ3F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:G6SH5RRK4XLSBZKGA2KE3HHZ3F","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":"3e5eee1911fb8cc4c64197193ae77383eec6667e48bccad582ae76701d5f7112","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-06-11T16:19:16Z","title_canon_sha256":"2c4d9bc28467467e661de4dd09963c7c6b3a9a004d7e4a8435b5e50ffdf218b1"},"schema_version":"1.0","source":{"id":"2006.06568","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.06568","created_at":"2026-07-05T01:09:59Z"},{"alias_kind":"arxiv_version","alias_value":"2006.06568v2","created_at":"2026-07-05T01:09:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.06568","created_at":"2026-07-05T01:09:59Z"},{"alias_kind":"pith_short_12","alias_value":"G6SH5RRK4XLS","created_at":"2026-07-05T01:09:59Z"},{"alias_kind":"pith_short_16","alias_value":"G6SH5RRK4XLSBZKG","created_at":"2026-07-05T01:09:59Z"},{"alias_kind":"pith_short_8","alias_value":"G6SH5RRK","created_at":"2026-07-05T01:09:59Z"}],"graph_snapshots":[{"event_id":"sha256:033154b456e953f937ecf9729494f2c5ecaf3cee7242f8e971d81e444a042901","target":"graph","created_at":"2026-07-05T01:09:59Z","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/2006.06568/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Region sampling or weighting is significantly important to the success of modern region-based object detectors. Unlike some previous works, which only focus on \"hard\" samples when optimizing the objective function, we argue that sample weighting should be data-dependent and task-dependent. The importance of a sample for the objective function optimization is determined by its uncertainties to both object classification and bounding box regression tasks. To this end, we devise a general loss function to cover most region-based object detectors with various sampling strategies, and then based on","authors_text":"Jingen Liu, Qi Cai, Tao Mei, Ting Yao, Yingwei Pan, Yu Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-06-11T16:19:16Z","title":"Learning a Unified Sample Weighting Network for Object Detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.06568","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":"sha256:314aa1aa6c1cf57e3c8c801b62afe18078f81a918ece85929f0c3315fae8a3bd","target":"record","created_at":"2026-07-05T01:09:59Z","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":"3e5eee1911fb8cc4c64197193ae77383eec6667e48bccad582ae76701d5f7112","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-06-11T16:19:16Z","title_canon_sha256":"2c4d9bc28467467e661de4dd09963c7c6b3a9a004d7e4a8435b5e50ffdf218b1"},"schema_version":"1.0","source":{"id":"2006.06568","kind":"arxiv","version":2}},"canonical_sha256":"37a47ec62ae5d720e54606944d9cf9d9772260fa97a85e30bfab42f5d246bf9b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"37a47ec62ae5d720e54606944d9cf9d9772260fa97a85e30bfab42f5d246bf9b","first_computed_at":"2026-07-05T01:09:59.700401Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:09:59.700401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sBQJ4gZ7qTk/JwIL1m4/1SwtdX2FZY2SrlWm7Ftyg/4/rkVZkvK/r13HJLO0hlGna0MEj1ren4chlQoyM+h5AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:09:59.700846Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.06568","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:314aa1aa6c1cf57e3c8c801b62afe18078f81a918ece85929f0c3315fae8a3bd","sha256:033154b456e953f937ecf9729494f2c5ecaf3cee7242f8e971d81e444a042901"],"state_sha256":"093e98c67db5e0df21fc1a452aef910a16fdb3205484fc9b1902cc807576ae9a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MY0pIzZoK7sjKzq3t8Bg5jgLFF4vu1M594PDIYBOOady8AYSr8FvHquAg6FZLAU/hkFy28e2rpzC+5ESpg+ODQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T01:07:29.384826Z","bundle_sha256":"25883df4c1c0ca12f63913abce986a2577914301cb6613303474324b5cee6e40"}}