{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:IIOZ7LYNXJUPXEYCBMIN5VFDML","short_pith_number":"pith:IIOZ7LYN","canonical_record":{"source":{"id":"2504.02137","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2025-04-02T21:28:38Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"cb4ce01f4d9cedee21da66a5cbb81a84fb5baea991357b1baff25d9501aa7421","abstract_canon_sha256":"5320d182a8031a9349fe6184a154bda89e0d8a34c8ecd75553b27a5e297ecce0"},"schema_version":"1.0"},"canonical_sha256":"421d9faf0dba68fb93020b10ded4a362fc74bd6a4bab01ee4fff4e4e79f7d5ee","source":{"kind":"arxiv","id":"2504.02137","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.02137","created_at":"2026-07-05T10:43:51Z"},{"alias_kind":"arxiv_version","alias_value":"2504.02137v1","created_at":"2026-07-05T10:43:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.02137","created_at":"2026-07-05T10:43:51Z"},{"alias_kind":"pith_short_12","alias_value":"IIOZ7LYNXJUP","created_at":"2026-07-05T10:43:51Z"},{"alias_kind":"pith_short_16","alias_value":"IIOZ7LYNXJUPXEYC","created_at":"2026-07-05T10:43:51Z"},{"alias_kind":"pith_short_8","alias_value":"IIOZ7LYN","created_at":"2026-07-05T10:43:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:IIOZ7LYNXJUPXEYCBMIN5VFDML","target":"record","payload":{"canonical_record":{"source":{"id":"2504.02137","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2025-04-02T21:28:38Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"cb4ce01f4d9cedee21da66a5cbb81a84fb5baea991357b1baff25d9501aa7421","abstract_canon_sha256":"5320d182a8031a9349fe6184a154bda89e0d8a34c8ecd75553b27a5e297ecce0"},"schema_version":"1.0"},"canonical_sha256":"421d9faf0dba68fb93020b10ded4a362fc74bd6a4bab01ee4fff4e4e79f7d5ee","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:43:51.140403Z","signature_b64":"40eX31cWyEwW6OVQVs5QOLORcj1S7TuebzH9qTgGZLN4GRGiopg9XN3veEUuzeXRj8cyq0jnFhkuaF3cTpsIDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"421d9faf0dba68fb93020b10ded4a362fc74bd6a4bab01ee4fff4e4e79f7d5ee","last_reissued_at":"2026-07-05T10:43:51.139923Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:43:51.139923Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2504.02137","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":"2026-07-05T10:43:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MwITeaxbYd0K1FSB5uiB2JT9tr9RPXa7KAFZEqD9Sru0YW1mqRPQICHGdAmELnXFLc3PZwdHU/0DVyqvT85jBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T22:43:57.135796Z"},"content_sha256":"e1fc97f197eeb132f5af253070c6a13603a3e438a8c60afac935fcdf70e6ca4f","schema_version":"1.0","event_id":"sha256:e1fc97f197eeb132f5af253070c6a13603a3e438a8c60afac935fcdf70e6ca4f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:IIOZ7LYNXJUPXEYCBMIN5VFDML","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhancing Embedding Representation Stability in Recommendation Systems with Semantic ID","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.IR","authors_text":"Carolina Zheng, Dinesh Ramasamy, Dmitrii Pedchenko, Gaby Nahum, Hangjun Xu, Jie Lei, Jiyan Yang, Kaushik Rangadurai, Lin Yang, Minhui Huang, Rong Jin, Shuang Yang, Siyu Wang, Tao Liu, Xiaohan Wei, Yang Yang, Yiping Han, Zutian Luo","submitted_at":"2025-04-02T21:28:38Z","abstract_excerpt":"The exponential growth of online content has posed significant challenges to ID-based models in industrial recommendation systems, ranging from extremely high cardinality and dynamically growing ID space, to highly skewed engagement distributions, to prediction instability as a result of natural id life cycles (e.g, the birth of new IDs and retirement of old IDs). To address these issues, many systems rely on random hashing to handle the id space and control the corresponding model parameters (i.e embedding table). However, this approach introduces data pollution from multiple ids sharing the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.02137","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/2504.02137/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":"2026-07-05T10:43:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CBRcYXAVm1dLIPyrU3/ELRMWwbgGV4u4PPvqxiR2hLjynWbs8JTOkfRgBRWrQURItZJLdLItQOOtLohkqMiPAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T22:43:57.136703Z"},"content_sha256":"7b22bfa2711e3bc71beabf7b9293c6cdcd594aaf9d05eeac52f2465518b77360","schema_version":"1.0","event_id":"sha256:7b22bfa2711e3bc71beabf7b9293c6cdcd594aaf9d05eeac52f2465518b77360"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IIOZ7LYNXJUPXEYCBMIN5VFDML/bundle.json","state_url":"https://pith.science/pith/IIOZ7LYNXJUPXEYCBMIN5VFDML/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IIOZ7LYNXJUPXEYCBMIN5VFDML/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":"2026-08-07T22:43:57Z","links":{"resolver":"https://pith.science/pith/IIOZ7LYNXJUPXEYCBMIN5VFDML","bundle":"https://pith.science/pith/IIOZ7LYNXJUPXEYCBMIN5VFDML/bundle.json","state":"https://pith.science/pith/IIOZ7LYNXJUPXEYCBMIN5VFDML/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IIOZ7LYNXJUPXEYCBMIN5VFDML/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:IIOZ7LYNXJUPXEYCBMIN5VFDML","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":"5320d182a8031a9349fe6184a154bda89e0d8a34c8ecd75553b27a5e297ecce0","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2025-04-02T21:28:38Z","title_canon_sha256":"cb4ce01f4d9cedee21da66a5cbb81a84fb5baea991357b1baff25d9501aa7421"},"schema_version":"1.0","source":{"id":"2504.02137","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.02137","created_at":"2026-07-05T10:43:51Z"},{"alias_kind":"arxiv_version","alias_value":"2504.02137v1","created_at":"2026-07-05T10:43:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.02137","created_at":"2026-07-05T10:43:51Z"},{"alias_kind":"pith_short_12","alias_value":"IIOZ7LYNXJUP","created_at":"2026-07-05T10:43:51Z"},{"alias_kind":"pith_short_16","alias_value":"IIOZ7LYNXJUPXEYC","created_at":"2026-07-05T10:43:51Z"},{"alias_kind":"pith_short_8","alias_value":"IIOZ7LYN","created_at":"2026-07-05T10:43:51Z"}],"graph_snapshots":[{"event_id":"sha256:7b22bfa2711e3bc71beabf7b9293c6cdcd594aaf9d05eeac52f2465518b77360","target":"graph","created_at":"2026-07-05T10:43:51Z","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/2504.02137/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The exponential growth of online content has posed significant challenges to ID-based models in industrial recommendation systems, ranging from extremely high cardinality and dynamically growing ID space, to highly skewed engagement distributions, to prediction instability as a result of natural id life cycles (e.g, the birth of new IDs and retirement of old IDs). To address these issues, many systems rely on random hashing to handle the id space and control the corresponding model parameters (i.e embedding table). However, this approach introduces data pollution from multiple ids sharing the ","authors_text":"Carolina Zheng, Dinesh Ramasamy, Dmitrii Pedchenko, Gaby Nahum, Hangjun Xu, Jie Lei, Jiyan Yang, Kaushik Rangadurai, Lin Yang, Minhui Huang, Rong Jin, Shuang Yang, Siyu Wang, Tao Liu, Xiaohan Wei, Yang Yang, Yiping Han, Zutian Luo","cross_cats":["cs.AI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2025-04-02T21:28:38Z","title":"Enhancing Embedding Representation Stability in Recommendation Systems with Semantic ID"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.02137","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:e1fc97f197eeb132f5af253070c6a13603a3e438a8c60afac935fcdf70e6ca4f","target":"record","created_at":"2026-07-05T10:43:51Z","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":"5320d182a8031a9349fe6184a154bda89e0d8a34c8ecd75553b27a5e297ecce0","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2025-04-02T21:28:38Z","title_canon_sha256":"cb4ce01f4d9cedee21da66a5cbb81a84fb5baea991357b1baff25d9501aa7421"},"schema_version":"1.0","source":{"id":"2504.02137","kind":"arxiv","version":1}},"canonical_sha256":"421d9faf0dba68fb93020b10ded4a362fc74bd6a4bab01ee4fff4e4e79f7d5ee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"421d9faf0dba68fb93020b10ded4a362fc74bd6a4bab01ee4fff4e4e79f7d5ee","first_computed_at":"2026-07-05T10:43:51.139923Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:43:51.139923Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"40eX31cWyEwW6OVQVs5QOLORcj1S7TuebzH9qTgGZLN4GRGiopg9XN3veEUuzeXRj8cyq0jnFhkuaF3cTpsIDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:43:51.140403Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.02137","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e1fc97f197eeb132f5af253070c6a13603a3e438a8c60afac935fcdf70e6ca4f","sha256:7b22bfa2711e3bc71beabf7b9293c6cdcd594aaf9d05eeac52f2465518b77360"],"state_sha256":"93ea8255cc3ec29e45f675c4cd8b0be934226e9a81363942130414f935e60797"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3aN+ZRP8ami17NvvM955uR7u6IoIA5heWj8KrUjDFsvgXX0hSAAAHw2aOVKEgo6RC3S+cx1zggU0dL9sxQeHCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T22:43:57.145307Z","bundle_sha256":"8df5a4a56565d10d39b218ec3cd82abf19b6ea018cb1e61513b07475c1e380fb"}}