{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:W2LTSXUY6FWDFAFZ7JMAJEDV2S","short_pith_number":"pith:W2LTSXUY","canonical_record":{"source":{"id":"2004.00830","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-04-02T05:55:06Z","cross_cats_sorted":[],"title_canon_sha256":"58c8d13ad39005ca0cf2619633a1a6a0fb62a38e3f79109551cdb408267d8076","abstract_canon_sha256":"89ecff36014d9079155ac6e80c6e2f6335b9acd0a0f732a7bea78db53d4e5170"},"schema_version":"1.0"},"canonical_sha256":"b697395e98f16c3280b9fa58049075d4a307e1badb7de8d46c8afdc7b8cd1789","source":{"kind":"arxiv","id":"2004.00830","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.00830","created_at":"2026-07-05T00:52:21Z"},{"alias_kind":"arxiv_version","alias_value":"2004.00830v1","created_at":"2026-07-05T00:52:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.00830","created_at":"2026-07-05T00:52:21Z"},{"alias_kind":"pith_short_12","alias_value":"W2LTSXUY6FWD","created_at":"2026-07-05T00:52:21Z"},{"alias_kind":"pith_short_16","alias_value":"W2LTSXUY6FWDFAFZ","created_at":"2026-07-05T00:52:21Z"},{"alias_kind":"pith_short_8","alias_value":"W2LTSXUY","created_at":"2026-07-05T00:52:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:W2LTSXUY6FWDFAFZ7JMAJEDV2S","target":"record","payload":{"canonical_record":{"source":{"id":"2004.00830","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-04-02T05:55:06Z","cross_cats_sorted":[],"title_canon_sha256":"58c8d13ad39005ca0cf2619633a1a6a0fb62a38e3f79109551cdb408267d8076","abstract_canon_sha256":"89ecff36014d9079155ac6e80c6e2f6335b9acd0a0f732a7bea78db53d4e5170"},"schema_version":"1.0"},"canonical_sha256":"b697395e98f16c3280b9fa58049075d4a307e1badb7de8d46c8afdc7b8cd1789","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:52:21.112640Z","signature_b64":"Zc6gNmCgNnOzY7egVnQ1lpl1YFq9gZ0mf/9m6TTt9TZCNSvQzn87HvxD0jhCM9YdSokYy1H7HknORB5r4MBeBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b697395e98f16c3280b9fa58049075d4a307e1badb7de8d46c8afdc7b8cd1789","last_reissued_at":"2026-07-05T00:52:21.112285Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:52:21.112285Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2004.00830","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":"2026-07-05T00:52:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cZi4gHgC3TdeuzyjooupdmtaDbl/RZoyfyNvGs6uC9d2VxSf5Dtna727pTSkE4u+l8trhsiJNw/JVDgD7RndCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T16:06:56.724806Z"},"content_sha256":"4bc54cfc02feb83e7ee241ac813273045e6cef33d762e4fc30c7e0a00413ae92","schema_version":"1.0","event_id":"sha256:4bc54cfc02feb83e7ee241ac813273045e6cef33d762e4fc30c7e0a00413ae92"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:W2LTSXUY6FWDFAFZ7JMAJEDV2S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tracking by Instance Detection: A Meta-Learning Approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Chong Luo, Guangting Wang, Wenjun Zeng, Xiaoyan Sun, Zhiwei Xiong","submitted_at":"2020-04-02T05:55:06Z","abstract_excerpt":"We consider the tracking problem as a special type of object detection problem, which we call instance detection. With proper initialization, a detector can be quickly converted into a tracker by learning the new instance from a single image. We find that model-agnostic meta-learning (MAML) offers a strategy to initialize the detector that satisfies our needs. We propose a principled three-step approach to build a high-performance tracker. First, pick any modern object detector trained with gradient descent. Second, conduct offline training (or initialization) with MAML. Third, perform domain "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.00830","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2004.00830/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":"2026-07-05T00:52:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R01rB/L5Ol/6VDvY2bjws/qq68yCLXg1VL+JrMld1NQjYmUIq7kRx4DDQDwsC94Mzcq4c+dm2JLtXil+kS3vBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T16:06:56.725318Z"},"content_sha256":"4834ec134e1fa6009e97ec248dd1220584cbcb2d99e1b41eccaa8ae62c84546b","schema_version":"1.0","event_id":"sha256:4834ec134e1fa6009e97ec248dd1220584cbcb2d99e1b41eccaa8ae62c84546b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W2LTSXUY6FWDFAFZ7JMAJEDV2S/bundle.json","state_url":"https://pith.science/pith/W2LTSXUY6FWDFAFZ7JMAJEDV2S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W2LTSXUY6FWDFAFZ7JMAJEDV2S/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":"2026-08-12T16:06:56Z","links":{"resolver":"https://pith.science/pith/W2LTSXUY6FWDFAFZ7JMAJEDV2S","bundle":"https://pith.science/pith/W2LTSXUY6FWDFAFZ7JMAJEDV2S/bundle.json","state":"https://pith.science/pith/W2LTSXUY6FWDFAFZ7JMAJEDV2S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W2LTSXUY6FWDFAFZ7JMAJEDV2S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:W2LTSXUY6FWDFAFZ7JMAJEDV2S","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":"89ecff36014d9079155ac6e80c6e2f6335b9acd0a0f732a7bea78db53d4e5170","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-04-02T05:55:06Z","title_canon_sha256":"58c8d13ad39005ca0cf2619633a1a6a0fb62a38e3f79109551cdb408267d8076"},"schema_version":"1.0","source":{"id":"2004.00830","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.00830","created_at":"2026-07-05T00:52:21Z"},{"alias_kind":"arxiv_version","alias_value":"2004.00830v1","created_at":"2026-07-05T00:52:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.00830","created_at":"2026-07-05T00:52:21Z"},{"alias_kind":"pith_short_12","alias_value":"W2LTSXUY6FWD","created_at":"2026-07-05T00:52:21Z"},{"alias_kind":"pith_short_16","alias_value":"W2LTSXUY6FWDFAFZ","created_at":"2026-07-05T00:52:21Z"},{"alias_kind":"pith_short_8","alias_value":"W2LTSXUY","created_at":"2026-07-05T00:52:21Z"}],"graph_snapshots":[{"event_id":"sha256:4834ec134e1fa6009e97ec248dd1220584cbcb2d99e1b41eccaa8ae62c84546b","target":"graph","created_at":"2026-07-05T00:52:21Z","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/2004.00830/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider the tracking problem as a special type of object detection problem, which we call instance detection. With proper initialization, a detector can be quickly converted into a tracker by learning the new instance from a single image. We find that model-agnostic meta-learning (MAML) offers a strategy to initialize the detector that satisfies our needs. We propose a principled three-step approach to build a high-performance tracker. First, pick any modern object detector trained with gradient descent. Second, conduct offline training (or initialization) with MAML. Third, perform domain ","authors_text":"Chong Luo, Guangting Wang, Wenjun Zeng, Xiaoyan Sun, Zhiwei Xiong","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-04-02T05:55:06Z","title":"Tracking by Instance Detection: A Meta-Learning Approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.00830","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":"sha256:4bc54cfc02feb83e7ee241ac813273045e6cef33d762e4fc30c7e0a00413ae92","target":"record","created_at":"2026-07-05T00:52:21Z","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":"89ecff36014d9079155ac6e80c6e2f6335b9acd0a0f732a7bea78db53d4e5170","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-04-02T05:55:06Z","title_canon_sha256":"58c8d13ad39005ca0cf2619633a1a6a0fb62a38e3f79109551cdb408267d8076"},"schema_version":"1.0","source":{"id":"2004.00830","kind":"arxiv","version":1}},"canonical_sha256":"b697395e98f16c3280b9fa58049075d4a307e1badb7de8d46c8afdc7b8cd1789","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b697395e98f16c3280b9fa58049075d4a307e1badb7de8d46c8afdc7b8cd1789","first_computed_at":"2026-07-05T00:52:21.112285Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:52:21.112285Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Zc6gNmCgNnOzY7egVnQ1lpl1YFq9gZ0mf/9m6TTt9TZCNSvQzn87HvxD0jhCM9YdSokYy1H7HknORB5r4MBeBw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:52:21.112640Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.00830","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4bc54cfc02feb83e7ee241ac813273045e6cef33d762e4fc30c7e0a00413ae92","sha256:4834ec134e1fa6009e97ec248dd1220584cbcb2d99e1b41eccaa8ae62c84546b"],"state_sha256":"3189a4dbc404d2c6f5ba9a2b99199eedf1e084bea8fd3eadb7b62ad13d1951d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GD035NHaMCeF+Or9pHCFwdvFjAtw9sY76pa+fjVEPg+aYI2wEPQvGBc0AcnfkAl/jwZjqpASaG9iE36jKOPHBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T16:06:56.746756Z","bundle_sha256":"f97cb0271a25659dd548816c6c484f6eefdefabc3ab62ca2475824ecbc8b5c58"}}