{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:3KWJCUCCUQMANCK36JMVAJKQVM","short_pith_number":"pith:3KWJCUCC","canonical_record":{"source":{"id":"2012.06793","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-12-12T11:50:13Z","cross_cats_sorted":[],"title_canon_sha256":"d0fc72b4c5aa207a830a048216c1d31ce3996f20f2c0616f2bb0ffb234bf7948","abstract_canon_sha256":"d1cbc4d9e65e5a254253d278c96401c5c2f615f57db31c0ef63469793c48f65d"},"schema_version":"1.0"},"canonical_sha256":"daac915042a41806895bf259502550ab14a8e852575b54a1620dcf372bd3911a","source":{"kind":"arxiv","id":"2012.06793","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.06793","created_at":"2026-07-05T01:58:59Z"},{"alias_kind":"arxiv_version","alias_value":"2012.06793v1","created_at":"2026-07-05T01:58:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.06793","created_at":"2026-07-05T01:58:59Z"},{"alias_kind":"pith_short_12","alias_value":"3KWJCUCCUQMA","created_at":"2026-07-05T01:58:59Z"},{"alias_kind":"pith_short_16","alias_value":"3KWJCUCCUQMANCK3","created_at":"2026-07-05T01:58:59Z"},{"alias_kind":"pith_short_8","alias_value":"3KWJCUCC","created_at":"2026-07-05T01:58:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:3KWJCUCCUQMANCK36JMVAJKQVM","target":"record","payload":{"canonical_record":{"source":{"id":"2012.06793","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-12-12T11:50:13Z","cross_cats_sorted":[],"title_canon_sha256":"d0fc72b4c5aa207a830a048216c1d31ce3996f20f2c0616f2bb0ffb234bf7948","abstract_canon_sha256":"d1cbc4d9e65e5a254253d278c96401c5c2f615f57db31c0ef63469793c48f65d"},"schema_version":"1.0"},"canonical_sha256":"daac915042a41806895bf259502550ab14a8e852575b54a1620dcf372bd3911a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:58:59.615232Z","signature_b64":"PreL9ON5LmGfhlOvkVYIOPsszHTrfNuJ/JqrZl2lSKjRr1ui2XlPgmN7AF5Tz7Z1S5K9yR9hWJ10+PQZbW7SAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"daac915042a41806895bf259502550ab14a8e852575b54a1620dcf372bd3911a","last_reissued_at":"2026-07-05T01:58:59.614761Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:58:59.614761Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2012.06793","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":"2026-07-05T01:58:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SNBLDcGsdl9SzONG0adKoKTNhq930fyYmMPrKzNd18/VxBrHFLROI8Ag2b/fdwyiH89zfA0Qt388DDrOWCbNDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T20:25:33.470620Z"},"content_sha256":"5b991b37934dc51c024b80a5cd65fa02e193223df841190a3038659fdb4fee24","schema_version":"1.0","event_id":"sha256:5b991b37934dc51c024b80a5cd65fa02e193223df841190a3038659fdb4fee24"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:3KWJCUCCUQMANCK36JMVAJKQVM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fine-grained Classification via Categorical Memory Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Joshua Marsh, Liang Zheng, Stephen Gould, Weijian Deng","submitted_at":"2020-12-12T11:50:13Z","abstract_excerpt":"Motivated by the desire to exploit patterns shared across classes, we present a simple yet effective class-specific memory module for fine-grained feature learning. The memory module stores the prototypical feature representation for each category as a moving average. We hypothesize that the combination of similarities with respect to each category is itself a useful discriminative cue. To detect these similarities, we use attention as a querying mechanism. The attention scores with respect to each class prototype are used as weights to combine prototypes via weighted sum, producing a uniquely"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.06793","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/2012.06793/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":"2026-07-05T01:58:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D7jJVZdoLa/SroH7gNDYHThIKjpBYqIpY2l+Qg5fDdx62dxj9LdQBdBsvXNd3fJN3CpKpP0zDbXgiCDIeuwSAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T20:25:33.470994Z"},"content_sha256":"0d6120054df032c5626508196819dd9d892fb9d51f1b722b508b95285ee32376","schema_version":"1.0","event_id":"sha256:0d6120054df032c5626508196819dd9d892fb9d51f1b722b508b95285ee32376"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3KWJCUCCUQMANCK36JMVAJKQVM/bundle.json","state_url":"https://pith.science/pith/3KWJCUCCUQMANCK36JMVAJKQVM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3KWJCUCCUQMANCK36JMVAJKQVM/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":"2026-07-06T20:25:33Z","links":{"resolver":"https://pith.science/pith/3KWJCUCCUQMANCK36JMVAJKQVM","bundle":"https://pith.science/pith/3KWJCUCCUQMANCK36JMVAJKQVM/bundle.json","state":"https://pith.science/pith/3KWJCUCCUQMANCK36JMVAJKQVM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3KWJCUCCUQMANCK36JMVAJKQVM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:3KWJCUCCUQMANCK36JMVAJKQVM","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":"d1cbc4d9e65e5a254253d278c96401c5c2f615f57db31c0ef63469793c48f65d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-12-12T11:50:13Z","title_canon_sha256":"d0fc72b4c5aa207a830a048216c1d31ce3996f20f2c0616f2bb0ffb234bf7948"},"schema_version":"1.0","source":{"id":"2012.06793","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.06793","created_at":"2026-07-05T01:58:59Z"},{"alias_kind":"arxiv_version","alias_value":"2012.06793v1","created_at":"2026-07-05T01:58:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.06793","created_at":"2026-07-05T01:58:59Z"},{"alias_kind":"pith_short_12","alias_value":"3KWJCUCCUQMA","created_at":"2026-07-05T01:58:59Z"},{"alias_kind":"pith_short_16","alias_value":"3KWJCUCCUQMANCK3","created_at":"2026-07-05T01:58:59Z"},{"alias_kind":"pith_short_8","alias_value":"3KWJCUCC","created_at":"2026-07-05T01:58:59Z"}],"graph_snapshots":[{"event_id":"sha256:0d6120054df032c5626508196819dd9d892fb9d51f1b722b508b95285ee32376","target":"graph","created_at":"2026-07-05T01:58:59Z","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/2012.06793/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Motivated by the desire to exploit patterns shared across classes, we present a simple yet effective class-specific memory module for fine-grained feature learning. The memory module stores the prototypical feature representation for each category as a moving average. We hypothesize that the combination of similarities with respect to each category is itself a useful discriminative cue. To detect these similarities, we use attention as a querying mechanism. The attention scores with respect to each class prototype are used as weights to combine prototypes via weighted sum, producing a uniquely","authors_text":"Joshua Marsh, Liang Zheng, Stephen Gould, Weijian Deng","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-12-12T11:50:13Z","title":"Fine-grained Classification via Categorical Memory Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.06793","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":"sha256:5b991b37934dc51c024b80a5cd65fa02e193223df841190a3038659fdb4fee24","target":"record","created_at":"2026-07-05T01:58:59Z","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":"d1cbc4d9e65e5a254253d278c96401c5c2f615f57db31c0ef63469793c48f65d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-12-12T11:50:13Z","title_canon_sha256":"d0fc72b4c5aa207a830a048216c1d31ce3996f20f2c0616f2bb0ffb234bf7948"},"schema_version":"1.0","source":{"id":"2012.06793","kind":"arxiv","version":1}},"canonical_sha256":"daac915042a41806895bf259502550ab14a8e852575b54a1620dcf372bd3911a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"daac915042a41806895bf259502550ab14a8e852575b54a1620dcf372bd3911a","first_computed_at":"2026-07-05T01:58:59.614761Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:58:59.614761Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PreL9ON5LmGfhlOvkVYIOPsszHTrfNuJ/JqrZl2lSKjRr1ui2XlPgmN7AF5Tz7Z1S5K9yR9hWJ10+PQZbW7SAw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:58:59.615232Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.06793","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b991b37934dc51c024b80a5cd65fa02e193223df841190a3038659fdb4fee24","sha256:0d6120054df032c5626508196819dd9d892fb9d51f1b722b508b95285ee32376"],"state_sha256":"2f958b3f7bd20a8455047ce25fba1aff3c2a1e8d1fd59c8165796bda73adf902"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eeLhvjVR9JGBEweMiG7Tz/ww1gke49gSK/NjHKEkYN6NbHDCLyS2zj6GunHDk3mAHvnE3NvC5T8993T5Iry2Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T20:25:33.473135Z","bundle_sha256":"50caeecd2564b6bdf1aaf9f43f1ba350ebb8bdea1596fe8abb79b1a5e87eaf67"}}