{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:TNWWX7VIJXZXLWDQVYUET2ROAC","short_pith_number":"pith:TNWWX7VI","canonical_record":{"source":{"id":"2605.21063","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-20T11:47:40Z","cross_cats_sorted":[],"title_canon_sha256":"1ede9aa2ad0d454e079775adc6878362a293745a2a2ab3ad8bca162f329dddb7","abstract_canon_sha256":"6027a245626dd96181992f982d7bdb2c2bb9a50fb2147038383922f29f47ee5e"},"schema_version":"1.0"},"canonical_sha256":"9b6d6bfea84df375d870ae2849ea2e00a329074603af6458c9e71a783c289527","source":{"kind":"arxiv","id":"2605.21063","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.21063","created_at":"2026-05-21T01:05:34Z"},{"alias_kind":"arxiv_version","alias_value":"2605.21063v1","created_at":"2026-05-21T01:05:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.21063","created_at":"2026-05-21T01:05:34Z"},{"alias_kind":"pith_short_12","alias_value":"TNWWX7VIJXZX","created_at":"2026-05-21T01:05:34Z"},{"alias_kind":"pith_short_16","alias_value":"TNWWX7VIJXZXLWDQ","created_at":"2026-05-21T01:05:34Z"},{"alias_kind":"pith_short_8","alias_value":"TNWWX7VI","created_at":"2026-05-21T01:05:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:TNWWX7VIJXZXLWDQVYUET2ROAC","target":"record","payload":{"canonical_record":{"source":{"id":"2605.21063","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-20T11:47:40Z","cross_cats_sorted":[],"title_canon_sha256":"1ede9aa2ad0d454e079775adc6878362a293745a2a2ab3ad8bca162f329dddb7","abstract_canon_sha256":"6027a245626dd96181992f982d7bdb2c2bb9a50fb2147038383922f29f47ee5e"},"schema_version":"1.0"},"canonical_sha256":"9b6d6bfea84df375d870ae2849ea2e00a329074603af6458c9e71a783c289527","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-21T01:05:34.778867Z","signature_b64":"I0e0XXKpIpWe0+tsl5e65Tg1G4BS1c01aTbOwKbnHfUzU+OmLeknrCx8V1yIMTUVWb3iWrgXeuDCu2qhgv7UCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9b6d6bfea84df375d870ae2849ea2e00a329074603af6458c9e71a783c289527","last_reissued_at":"2026-05-21T01:05:34.778103Z","signature_status":"signed_v1","first_computed_at":"2026-05-21T01:05:34.778103Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.21063","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":"2026-05-21T01:05:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ivHYM+wn47MqPkHe1ExM9vxTgXfnJEHN6lVHUiGQLjrnd90YEpaYatBKbSBH2jW8GH2AB6h0fyz8lA9h+mz6Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:46:23.198714Z"},"content_sha256":"cd4fcbdea849df24428a407cf476a4a2a496c4a488a554cda1c6a43594c2d3a6","schema_version":"1.0","event_id":"sha256:cd4fcbdea849df24428a407cf476a4a2a496c4a488a554cda1c6a43594c2d3a6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:TNWWX7VIJXZXLWDQVYUET2ROAC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"APM: Evaluating Style Personalization in LLMs with Arbitrary Preference Mappings","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Leander Girrbach, Philipp Spohn, Zeynep Akata","submitted_at":"2026-05-20T11:47:40Z","abstract_excerpt":"Typical LLM responses tend to follow a default style, even though users often have distinct preferences regarding tone, verbosity, and formality that they do not explicitly state in their prompts. Evaluating whether personalization methods can adapt to these implicit preferences is challenging, since users typically provide prompts rather than reference responses, style preferences are not factually verifiable, and reference-free LLM judges may conflate personalization with general response quality. To address these challenges, we introduce the Arbitrary Preference Mapping (APM) benchmark, whi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.21063","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/2605.21063/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":"2026-05-21T01:05:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cY1Wn32YLWDI5kGv68NusrsNpPqC+x2+TOdcbAmeFMuCxq3A4x3+QDZmByIzoma6v4on9Erk40/+cEGbGjU6DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:46:23.199239Z"},"content_sha256":"953326ba80072c93aa4f2df1103cdf1ee313666a793a814d8d4c3742dcfefe3a","schema_version":"1.0","event_id":"sha256:953326ba80072c93aa4f2df1103cdf1ee313666a793a814d8d4c3742dcfefe3a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TNWWX7VIJXZXLWDQVYUET2ROAC/bundle.json","state_url":"https://pith.science/pith/TNWWX7VIJXZXLWDQVYUET2ROAC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TNWWX7VIJXZXLWDQVYUET2ROAC/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":"2026-05-25T21:46:23Z","links":{"resolver":"https://pith.science/pith/TNWWX7VIJXZXLWDQVYUET2ROAC","bundle":"https://pith.science/pith/TNWWX7VIJXZXLWDQVYUET2ROAC/bundle.json","state":"https://pith.science/pith/TNWWX7VIJXZXLWDQVYUET2ROAC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TNWWX7VIJXZXLWDQVYUET2ROAC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:TNWWX7VIJXZXLWDQVYUET2ROAC","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":"6027a245626dd96181992f982d7bdb2c2bb9a50fb2147038383922f29f47ee5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-20T11:47:40Z","title_canon_sha256":"1ede9aa2ad0d454e079775adc6878362a293745a2a2ab3ad8bca162f329dddb7"},"schema_version":"1.0","source":{"id":"2605.21063","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.21063","created_at":"2026-05-21T01:05:34Z"},{"alias_kind":"arxiv_version","alias_value":"2605.21063v1","created_at":"2026-05-21T01:05:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.21063","created_at":"2026-05-21T01:05:34Z"},{"alias_kind":"pith_short_12","alias_value":"TNWWX7VIJXZX","created_at":"2026-05-21T01:05:34Z"},{"alias_kind":"pith_short_16","alias_value":"TNWWX7VIJXZXLWDQ","created_at":"2026-05-21T01:05:34Z"},{"alias_kind":"pith_short_8","alias_value":"TNWWX7VI","created_at":"2026-05-21T01:05:34Z"}],"graph_snapshots":[{"event_id":"sha256:953326ba80072c93aa4f2df1103cdf1ee313666a793a814d8d4c3742dcfefe3a","target":"graph","created_at":"2026-05-21T01:05:34Z","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/2605.21063/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Typical LLM responses tend to follow a default style, even though users often have distinct preferences regarding tone, verbosity, and formality that they do not explicitly state in their prompts. Evaluating whether personalization methods can adapt to these implicit preferences is challenging, since users typically provide prompts rather than reference responses, style preferences are not factually verifiable, and reference-free LLM judges may conflate personalization with general response quality. To address these challenges, we introduce the Arbitrary Preference Mapping (APM) benchmark, whi","authors_text":"Leander Girrbach, Philipp Spohn, Zeynep Akata","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-20T11:47:40Z","title":"APM: Evaluating Style Personalization in LLMs with Arbitrary Preference Mappings"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.21063","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:cd4fcbdea849df24428a407cf476a4a2a496c4a488a554cda1c6a43594c2d3a6","target":"record","created_at":"2026-05-21T01:05:34Z","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":"6027a245626dd96181992f982d7bdb2c2bb9a50fb2147038383922f29f47ee5e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-20T11:47:40Z","title_canon_sha256":"1ede9aa2ad0d454e079775adc6878362a293745a2a2ab3ad8bca162f329dddb7"},"schema_version":"1.0","source":{"id":"2605.21063","kind":"arxiv","version":1}},"canonical_sha256":"9b6d6bfea84df375d870ae2849ea2e00a329074603af6458c9e71a783c289527","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b6d6bfea84df375d870ae2849ea2e00a329074603af6458c9e71a783c289527","first_computed_at":"2026-05-21T01:05:34.778103Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-21T01:05:34.778103Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I0e0XXKpIpWe0+tsl5e65Tg1G4BS1c01aTbOwKbnHfUzU+OmLeknrCx8V1yIMTUVWb3iWrgXeuDCu2qhgv7UCQ==","signature_status":"signed_v1","signed_at":"2026-05-21T01:05:34.778867Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.21063","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cd4fcbdea849df24428a407cf476a4a2a496c4a488a554cda1c6a43594c2d3a6","sha256:953326ba80072c93aa4f2df1103cdf1ee313666a793a814d8d4c3742dcfefe3a"],"state_sha256":"ef73b3f710a4bc334f503a40162f3c62958df2a43c53bf253b559b9fb87e3239"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DpNcDvzBlYu601MWa1DbERvCuBlGbebacfXn4rN4fLJHGCFxa5CYsgsS7g9srd23MO9Uko1eh/7DCJj0/lJFBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:46:23.202075Z","bundle_sha256":"c79ba5cc24948c6e2617b459a7e8dbd36bb235f2ef77c09e0fc1e556148e3ec0"}}