{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:VWY6WYXO3LH6JWA4YBACA4AYEC","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":"cdb77ab38a802b729a3b2269f129ebb9dc804f39a979b0e38d164ebb84ea2052","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2026-05-25T01:22:45Z","title_canon_sha256":"91336c881b512d8fea032c318aea53a0c2b91e184e5c5711f431dc272cadc056"},"schema_version":"1.0","source":{"id":"2605.25330","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.25330","created_at":"2026-05-26T02:04:29Z"},{"alias_kind":"arxiv_version","alias_value":"2605.25330v1","created_at":"2026-05-26T02:04:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.25330","created_at":"2026-05-26T02:04:29Z"},{"alias_kind":"pith_short_12","alias_value":"VWY6WYXO3LH6","created_at":"2026-05-26T02:04:29Z"},{"alias_kind":"pith_short_16","alias_value":"VWY6WYXO3LH6JWA4","created_at":"2026-05-26T02:04:29Z"},{"alias_kind":"pith_short_8","alias_value":"VWY6WYXO","created_at":"2026-05-26T02:04:29Z"}],"graph_snapshots":[{"event_id":"sha256:e3cedb0bd39e727605bc49430bd4582147adcec7fe599b8d3cc4d15591e67e7d","target":"graph","created_at":"2026-05-26T02:04:29Z","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/2605.25330/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In Semantic-ID (SID) based generative recommendation, each item is represented as a sequence of discrete codes, and an autoregressive model is trained to generate the SID sequence of the next item; top-K performance is then measured by checking whether the SID sequence of the target item appears among the generated sequences. This evaluation protocol equates SID-level matching with item-level recommendation, an equivalence that holds only when every SID sequence maps to a single item. We show this assumption breaks down in practice: because tokenizers compress item features into a code space, ","authors_text":"Haibo Zhang, Jeremiah D. Deng, Lech Szymanski, Qian Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2026-05-25T01:22:45Z","title":"How Reliable Are Semantic-ID Tokenizer Comparisons in Generative Recommendation?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.25330","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:d8456951cd78a70f3d686b0594022854b0fc66145b3e5ecc19ada05f892bc682","target":"record","created_at":"2026-05-26T02:04:29Z","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":"cdb77ab38a802b729a3b2269f129ebb9dc804f39a979b0e38d164ebb84ea2052","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2026-05-25T01:22:45Z","title_canon_sha256":"91336c881b512d8fea032c318aea53a0c2b91e184e5c5711f431dc272cadc056"},"schema_version":"1.0","source":{"id":"2605.25330","kind":"arxiv","version":1}},"canonical_sha256":"adb1eb62eedacfe4d81cc04020701820b6de49ca0b6866e0464d5791fb7ba14b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"adb1eb62eedacfe4d81cc04020701820b6de49ca0b6866e0464d5791fb7ba14b","first_computed_at":"2026-05-26T02:04:29.164600Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-26T02:04:29.164600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kaEcW61W7m6dBmrQBEZSNdj6hHE+JOAEBPmF1Oru+m9Csp1YOy6eqqRXZzncR9Z7j47vZnc3tnvhqpkN0s3lDA==","signature_status":"signed_v1","signed_at":"2026-05-26T02:04:29.165270Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.25330","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d8456951cd78a70f3d686b0594022854b0fc66145b3e5ecc19ada05f892bc682","sha256:e3cedb0bd39e727605bc49430bd4582147adcec7fe599b8d3cc4d15591e67e7d"],"state_sha256":"5720599cc2cc8dfec05804f9acbf7568ff30010eb9a21d6407af0ed4f59dd207"}