{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:2WYOBJ7RGPPXQSBHRH6RGO6GEP","short_pith_number":"pith:2WYOBJ7R","canonical_record":{"source":{"id":"2303.04744","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2023-02-05T10:29:57Z","cross_cats_sorted":["cs.CR","cs.HC","cs.LG"],"title_canon_sha256":"fb040ccac43617f05ceef5a8d03c70fd06a284e756a9bb45e4821d502c807ae4","abstract_canon_sha256":"89b41d473d65a343396d38ec6cfa261a8a512aab9ec593ede5ec04508f83a3ae"},"schema_version":"1.0"},"canonical_sha256":"d5b0e0a7f133df78482789fd133bc623cfe969b1f6bffbfe49c463a3bc4c42a6","source":{"kind":"arxiv","id":"2303.04744","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.04744","created_at":"2026-07-05T05:49:24Z"},{"alias_kind":"arxiv_version","alias_value":"2303.04744v1","created_at":"2026-07-05T05:49:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.04744","created_at":"2026-07-05T05:49:24Z"},{"alias_kind":"pith_short_12","alias_value":"2WYOBJ7RGPPX","created_at":"2026-07-05T05:49:24Z"},{"alias_kind":"pith_short_16","alias_value":"2WYOBJ7RGPPXQSBH","created_at":"2026-07-05T05:49:24Z"},{"alias_kind":"pith_short_8","alias_value":"2WYOBJ7R","created_at":"2026-07-05T05:49:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:2WYOBJ7RGPPXQSBHRH6RGO6GEP","target":"record","payload":{"canonical_record":{"source":{"id":"2303.04744","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2023-02-05T10:29:57Z","cross_cats_sorted":["cs.CR","cs.HC","cs.LG"],"title_canon_sha256":"fb040ccac43617f05ceef5a8d03c70fd06a284e756a9bb45e4821d502c807ae4","abstract_canon_sha256":"89b41d473d65a343396d38ec6cfa261a8a512aab9ec593ede5ec04508f83a3ae"},"schema_version":"1.0"},"canonical_sha256":"d5b0e0a7f133df78482789fd133bc623cfe969b1f6bffbfe49c463a3bc4c42a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:49:24.705759Z","signature_b64":"CYOoWH8HrrJqrPmDfzPgTUPAxizPmZG9d7UJh1LtJE3CWot0HToYug5PxTNJnZJ8TSI+gsmjONcuvp7K35NfAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d5b0e0a7f133df78482789fd133bc623cfe969b1f6bffbfe49c463a3bc4c42a6","last_reissued_at":"2026-07-05T05:49:24.705339Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:49:24.705339Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2303.04744","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":"2026-07-05T05:49:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F25CJQ5jpVJu8FvS/jtZkdLjMlYB5iS/rLrCmE4+/1j8E1eR0DmRBAmpiqPQhMoIU6kI1oq/1r2XH9UumXkDDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:15:37.446271Z"},"content_sha256":"68a041e19858aa2aa0c83c044b53cf849adb9797847c13bbfbc602962b5ccf39","schema_version":"1.0","event_id":"sha256:68a041e19858aa2aa0c83c044b53cf849adb9797847c13bbfbc602962b5ccf39"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:2WYOBJ7RGPPXQSBHRH6RGO6GEP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Federated Privacy-preserving Collaborative Filtering for On-Device Next App Prediction","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.CR","cs.HC","cs.LG"],"primary_cat":"cs.IR","authors_text":"Albert Sayapin, Aleksandr Katrutsa, Alexey Frolov, Daniel Bershatsky, Evgeny Frolov, Gleb Balitskiy, Ivan Oseledets, Vitaliy Kharin","submitted_at":"2023-02-05T10:29:57Z","abstract_excerpt":"In this study, we propose a novel SeqMF model to solve the problem of predicting the next app launch during mobile device usage. Although this problem can be represented as a classical collaborative filtering problem, it requires proper modification since the data are sequential, the user feedback is distributed among devices and the transmission of users' data to aggregate common patterns must be protected against leakage. According to such requirements, we modify the structure of the classical matrix factorization model and update the training procedure to sequential learning. Since the data"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.04744","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/2303.04744/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":"2026-07-05T05:49:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R4bH5gMmUc7UWdq/YIHfD6TLgm031nhMffXMVQxKfVdX2Y7amP0ayJKWZOp6ztGLXChV3Xd69QWIGpbYS/RyBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:15:37.446699Z"},"content_sha256":"3db280650d1a587cdc7dadb0deba0b1f5d754f557f3ee6a1c9288009c57b220f","schema_version":"1.0","event_id":"sha256:3db280650d1a587cdc7dadb0deba0b1f5d754f557f3ee6a1c9288009c57b220f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2WYOBJ7RGPPXQSBHRH6RGO6GEP/bundle.json","state_url":"https://pith.science/pith/2WYOBJ7RGPPXQSBHRH6RGO6GEP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2WYOBJ7RGPPXQSBHRH6RGO6GEP/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":"2026-07-07T07:15:37Z","links":{"resolver":"https://pith.science/pith/2WYOBJ7RGPPXQSBHRH6RGO6GEP","bundle":"https://pith.science/pith/2WYOBJ7RGPPXQSBHRH6RGO6GEP/bundle.json","state":"https://pith.science/pith/2WYOBJ7RGPPXQSBHRH6RGO6GEP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2WYOBJ7RGPPXQSBHRH6RGO6GEP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:2WYOBJ7RGPPXQSBHRH6RGO6GEP","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":"89b41d473d65a343396d38ec6cfa261a8a512aab9ec593ede5ec04508f83a3ae","cross_cats_sorted":["cs.CR","cs.HC","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2023-02-05T10:29:57Z","title_canon_sha256":"fb040ccac43617f05ceef5a8d03c70fd06a284e756a9bb45e4821d502c807ae4"},"schema_version":"1.0","source":{"id":"2303.04744","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.04744","created_at":"2026-07-05T05:49:24Z"},{"alias_kind":"arxiv_version","alias_value":"2303.04744v1","created_at":"2026-07-05T05:49:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.04744","created_at":"2026-07-05T05:49:24Z"},{"alias_kind":"pith_short_12","alias_value":"2WYOBJ7RGPPX","created_at":"2026-07-05T05:49:24Z"},{"alias_kind":"pith_short_16","alias_value":"2WYOBJ7RGPPXQSBH","created_at":"2026-07-05T05:49:24Z"},{"alias_kind":"pith_short_8","alias_value":"2WYOBJ7R","created_at":"2026-07-05T05:49:24Z"}],"graph_snapshots":[{"event_id":"sha256:3db280650d1a587cdc7dadb0deba0b1f5d754f557f3ee6a1c9288009c57b220f","target":"graph","created_at":"2026-07-05T05:49:24Z","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/2303.04744/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this study, we propose a novel SeqMF model to solve the problem of predicting the next app launch during mobile device usage. Although this problem can be represented as a classical collaborative filtering problem, it requires proper modification since the data are sequential, the user feedback is distributed among devices and the transmission of users' data to aggregate common patterns must be protected against leakage. According to such requirements, we modify the structure of the classical matrix factorization model and update the training procedure to sequential learning. Since the data","authors_text":"Albert Sayapin, Aleksandr Katrutsa, Alexey Frolov, Daniel Bershatsky, Evgeny Frolov, Gleb Balitskiy, Ivan Oseledets, Vitaliy Kharin","cross_cats":["cs.CR","cs.HC","cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2023-02-05T10:29:57Z","title":"Federated Privacy-preserving Collaborative Filtering for On-Device Next App Prediction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.04744","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":"sha256:68a041e19858aa2aa0c83c044b53cf849adb9797847c13bbfbc602962b5ccf39","target":"record","created_at":"2026-07-05T05:49:24Z","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":"89b41d473d65a343396d38ec6cfa261a8a512aab9ec593ede5ec04508f83a3ae","cross_cats_sorted":["cs.CR","cs.HC","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2023-02-05T10:29:57Z","title_canon_sha256":"fb040ccac43617f05ceef5a8d03c70fd06a284e756a9bb45e4821d502c807ae4"},"schema_version":"1.0","source":{"id":"2303.04744","kind":"arxiv","version":1}},"canonical_sha256":"d5b0e0a7f133df78482789fd133bc623cfe969b1f6bffbfe49c463a3bc4c42a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d5b0e0a7f133df78482789fd133bc623cfe969b1f6bffbfe49c463a3bc4c42a6","first_computed_at":"2026-07-05T05:49:24.705339Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:49:24.705339Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CYOoWH8HrrJqrPmDfzPgTUPAxizPmZG9d7UJh1LtJE3CWot0HToYug5PxTNJnZJ8TSI+gsmjONcuvp7K35NfAw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:49:24.705759Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.04744","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68a041e19858aa2aa0c83c044b53cf849adb9797847c13bbfbc602962b5ccf39","sha256:3db280650d1a587cdc7dadb0deba0b1f5d754f557f3ee6a1c9288009c57b220f"],"state_sha256":"a8de8ff3642ef80ae6dd53b8fc3362fc4864a02f8d9ad601f259ece9d8531fe5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mac4sCnrVSfAT3jQDXyWnxG699G0u7HKyf4qOw9Q0ExH6tFHkFbDg7ZK8PvDfCO6ESdjr4qcOiAPD8hpcV0sDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T07:15:37.449142Z","bundle_sha256":"84583b30eec717672711205b503b18a4408343c5f442bad79fdd135a0ccbf412"}}