{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:FVLIHROQ5IF5GIXSH6PKJWCFTH","short_pith_number":"pith:FVLIHROQ","canonical_record":{"source":{"id":"1801.00101","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2017-12-30T08:21:19Z","cross_cats_sorted":["stat.ML"],"title_canon_sha256":"fe28d3db563974512ad19a9772cb811d52a5d583af2add2a3e35c43648876861","abstract_canon_sha256":"33acd621ac0b213a5246234992e4377071a2b6eab269aebcaa27d92d21681234"},"schema_version":"1.0"},"canonical_sha256":"2d5683c5d0ea0bd322f23f9ea4d84599e13cdc63c713a621b6b9f0da4d0662e3","source":{"kind":"arxiv","id":"1801.00101","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.00101","created_at":"2026-05-18T00:26:43Z"},{"alias_kind":"arxiv_version","alias_value":"1801.00101v2","created_at":"2026-05-18T00:26:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.00101","created_at":"2026-05-18T00:26:43Z"},{"alias_kind":"pith_short_12","alias_value":"FVLIHROQ5IF5","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"FVLIHROQ5IF5GIXS","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"FVLIHROQ","created_at":"2026-05-18T12:31:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:FVLIHROQ5IF5GIXSH6PKJWCFTH","target":"record","payload":{"canonical_record":{"source":{"id":"1801.00101","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2017-12-30T08:21:19Z","cross_cats_sorted":["stat.ML"],"title_canon_sha256":"fe28d3db563974512ad19a9772cb811d52a5d583af2add2a3e35c43648876861","abstract_canon_sha256":"33acd621ac0b213a5246234992e4377071a2b6eab269aebcaa27d92d21681234"},"schema_version":"1.0"},"canonical_sha256":"2d5683c5d0ea0bd322f23f9ea4d84599e13cdc63c713a621b6b9f0da4d0662e3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:26:43.119080Z","signature_b64":"7QwprFXE+i0iE+lBTwkRr3NI7tyTxKBJwo+0g/yNHwcC5vHUbEUW+akZQQAPh47UD4O8I2GV7KQt39+2nUtWAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2d5683c5d0ea0bd322f23f9ea4d84599e13cdc63c713a621b6b9f0da4d0662e3","last_reissued_at":"2026-05-18T00:26:43.118545Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:26:43.118545Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.00101","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":"2026-05-18T00:26:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9pyKR13RQUrq69XY3BctDfcd182dEIrW/tJRfz7cVLvRgr7GIWGXbSCNwZKWmb/0Coex2R3V925kyEdIIkW+CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:32:30.856811Z"},"content_sha256":"8d33f9aa0165ebfc03d12da10e04bccf40f0ed52254a9eb65be8bbe92205afb7","schema_version":"1.0","event_id":"sha256:8d33f9aa0165ebfc03d12da10e04bccf40f0ed52254a9eb65be8bbe92205afb7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:FVLIHROQ5IF5GIXSH6PKJWCFTH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Parameter-free online learning via model selection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["stat.ML"],"primary_cat":"cs.LG","authors_text":"Dylan J. Foster, Karthik Sridharan, Mehryar Mohri, Satyen Kale","submitted_at":"2017-12-30T08:21:19Z","abstract_excerpt":"We introduce an efficient algorithmic framework for model selection in online learning, also known as parameter-free online learning. Departing from previous work, which has focused on highly structured function classes such as nested balls in Hilbert space, we propose a generic meta-algorithm framework that achieves online model selection oracle inequalities under minimal structural assumptions. We give the first computationally efficient parameter-free algorithms that work in arbitrary Banach spaces under mild smoothness assumptions; previous results applied only to Hilbert spaces. We furthe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.00101","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":""},"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":"2026-05-18T00:26:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MemCjZqDdlb9QD67EedATl0wWW8Tzgl+4D4rrMdB6tHgoR/WzrwhX7NrGQkJK1ZpDB7FAWiGWObIzIST7czICw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:32:30.857159Z"},"content_sha256":"94b435864ba4c87035078d90459ac681b2ea5bf86b9abe0afa06e3b10e7d3f45","schema_version":"1.0","event_id":"sha256:94b435864ba4c87035078d90459ac681b2ea5bf86b9abe0afa06e3b10e7d3f45"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FVLIHROQ5IF5GIXSH6PKJWCFTH/bundle.json","state_url":"https://pith.science/pith/FVLIHROQ5IF5GIXSH6PKJWCFTH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FVLIHROQ5IF5GIXSH6PKJWCFTH/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":"2026-05-28T08:32:30Z","links":{"resolver":"https://pith.science/pith/FVLIHROQ5IF5GIXSH6PKJWCFTH","bundle":"https://pith.science/pith/FVLIHROQ5IF5GIXSH6PKJWCFTH/bundle.json","state":"https://pith.science/pith/FVLIHROQ5IF5GIXSH6PKJWCFTH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FVLIHROQ5IF5GIXSH6PKJWCFTH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:FVLIHROQ5IF5GIXSH6PKJWCFTH","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":"33acd621ac0b213a5246234992e4377071a2b6eab269aebcaa27d92d21681234","cross_cats_sorted":["stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2017-12-30T08:21:19Z","title_canon_sha256":"fe28d3db563974512ad19a9772cb811d52a5d583af2add2a3e35c43648876861"},"schema_version":"1.0","source":{"id":"1801.00101","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.00101","created_at":"2026-05-18T00:26:43Z"},{"alias_kind":"arxiv_version","alias_value":"1801.00101v2","created_at":"2026-05-18T00:26:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.00101","created_at":"2026-05-18T00:26:43Z"},{"alias_kind":"pith_short_12","alias_value":"FVLIHROQ5IF5","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"FVLIHROQ5IF5GIXS","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"FVLIHROQ","created_at":"2026-05-18T12:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:94b435864ba4c87035078d90459ac681b2ea5bf86b9abe0afa06e3b10e7d3f45","target":"graph","created_at":"2026-05-18T00:26:43Z","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":"We introduce an efficient algorithmic framework for model selection in online learning, also known as parameter-free online learning. Departing from previous work, which has focused on highly structured function classes such as nested balls in Hilbert space, we propose a generic meta-algorithm framework that achieves online model selection oracle inequalities under minimal structural assumptions. We give the first computationally efficient parameter-free algorithms that work in arbitrary Banach spaces under mild smoothness assumptions; previous results applied only to Hilbert spaces. We furthe","authors_text":"Dylan J. Foster, Karthik Sridharan, Mehryar Mohri, Satyen Kale","cross_cats":["stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2017-12-30T08:21:19Z","title":"Parameter-free online learning via model selection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.00101","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":"sha256:8d33f9aa0165ebfc03d12da10e04bccf40f0ed52254a9eb65be8bbe92205afb7","target":"record","created_at":"2026-05-18T00:26:43Z","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":"33acd621ac0b213a5246234992e4377071a2b6eab269aebcaa27d92d21681234","cross_cats_sorted":["stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LG","submitted_at":"2017-12-30T08:21:19Z","title_canon_sha256":"fe28d3db563974512ad19a9772cb811d52a5d583af2add2a3e35c43648876861"},"schema_version":"1.0","source":{"id":"1801.00101","kind":"arxiv","version":2}},"canonical_sha256":"2d5683c5d0ea0bd322f23f9ea4d84599e13cdc63c713a621b6b9f0da4d0662e3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2d5683c5d0ea0bd322f23f9ea4d84599e13cdc63c713a621b6b9f0da4d0662e3","first_computed_at":"2026-05-18T00:26:43.118545Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:26:43.118545Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7QwprFXE+i0iE+lBTwkRr3NI7tyTxKBJwo+0g/yNHwcC5vHUbEUW+akZQQAPh47UD4O8I2GV7KQt39+2nUtWAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:26:43.119080Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.00101","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d33f9aa0165ebfc03d12da10e04bccf40f0ed52254a9eb65be8bbe92205afb7","sha256:94b435864ba4c87035078d90459ac681b2ea5bf86b9abe0afa06e3b10e7d3f45"],"state_sha256":"bc64e7cc80dbd52fadf2d0c5845907c84247d3c03bf5670cf941a3a6a07d8b51"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ToZOdFzn2naYVNK0Kau46kkRwJkkam/mwzO8FC1k+744zzfgjQGZBb7cDWk+Zn92RPfwHEdUrLjBRltHq+q8AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T08:32:30.859228Z","bundle_sha256":"114ed8e2e1b013362a575d9c3763348f2b95350f95a4a047893cb8ed53814815"}}