{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:A5RLQVITWMMCCNHMI7HW227BKP","short_pith_number":"pith:A5RLQVIT","schema_version":"1.0","canonical_sha256":"0762b85513b3182134ec47cf6d6be153fa478661e875b1dc004bd4802f068938","source":{"kind":"arxiv","id":"2307.15863","version":1},"attestation_state":"computed","paper":{"title":"Panel Data Models with Time-Varying Latent Group Structures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"econ.EM","authors_text":"Liangjun Su, Peter C B Phillips, Yiren Wang","submitted_at":"2023-07-29T01:58:59Z","abstract_excerpt":"This paper considers a linear panel model with interactive fixed effects and unobserved individual and time heterogeneities that are captured by some latent group structures and an unknown structural break, respectively. To enhance realism the model may have different numbers of groups and/or different group memberships before and after the break. With the preliminary nuclear-norm-regularized estimation followed by row- and column-wise linear regressions, we estimate the break point based on the idea of binary segmentation and the latent group structures together with the number of groups befo"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2307.15863","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"econ.EM","submitted_at":"2023-07-29T01:58:59Z","cross_cats_sorted":[],"title_canon_sha256":"e7bd367975854637499a50c837ca005d3932b441282e90d65d0154dacb43eef4","abstract_canon_sha256":"9bcdeb6a8a9bdf69417531d637e309d3ca06682097b51f6c63c430eaf63f714d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:35:55.558067Z","signature_b64":"4Lt5Bn9qByFHJCkqLw6e92MfFF9hMNS7HSCVhybUO/ShBnfnaCXPtmwwXWjn09fOhrPhIlsoW6+oriC9jK9hCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0762b85513b3182134ec47cf6d6be153fa478661e875b1dc004bd4802f068938","last_reissued_at":"2026-07-05T06:35:55.557668Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:35:55.557668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Panel Data Models with Time-Varying Latent Group Structures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"econ.EM","authors_text":"Liangjun Su, Peter C B Phillips, Yiren Wang","submitted_at":"2023-07-29T01:58:59Z","abstract_excerpt":"This paper considers a linear panel model with interactive fixed effects and unobserved individual and time heterogeneities that are captured by some latent group structures and an unknown structural break, respectively. To enhance realism the model may have different numbers of groups and/or different group memberships before and after the break. With the preliminary nuclear-norm-regularized estimation followed by row- and column-wise linear regressions, we estimate the break point based on the idea of binary segmentation and the latent group structures together with the number of groups befo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.15863","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/2307.15863/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2307.15863","created_at":"2026-07-05T06:35:55.557730+00:00"},{"alias_kind":"arxiv_version","alias_value":"2307.15863v1","created_at":"2026-07-05T06:35:55.557730+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.15863","created_at":"2026-07-05T06:35:55.557730+00:00"},{"alias_kind":"pith_short_12","alias_value":"A5RLQVITWMMC","created_at":"2026-07-05T06:35:55.557730+00:00"},{"alias_kind":"pith_short_16","alias_value":"A5RLQVITWMMCCNHM","created_at":"2026-07-05T06:35:55.557730+00:00"},{"alias_kind":"pith_short_8","alias_value":"A5RLQVIT","created_at":"2026-07-05T06:35:55.557730+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/A5RLQVITWMMCCNHMI7HW227BKP","json":"https://pith.science/pith/A5RLQVITWMMCCNHMI7HW227BKP.json","graph_json":"https://pith.science/api/pith-number/A5RLQVITWMMCCNHMI7HW227BKP/graph.json","events_json":"https://pith.science/api/pith-number/A5RLQVITWMMCCNHMI7HW227BKP/events.json","paper":"https://pith.science/paper/A5RLQVIT"},"agent_actions":{"view_html":"https://pith.science/pith/A5RLQVITWMMCCNHMI7HW227BKP","download_json":"https://pith.science/pith/A5RLQVITWMMCCNHMI7HW227BKP.json","view_paper":"https://pith.science/paper/A5RLQVIT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2307.15863&json=true","fetch_graph":"https://pith.science/api/pith-number/A5RLQVITWMMCCNHMI7HW227BKP/graph.json","fetch_events":"https://pith.science/api/pith-number/A5RLQVITWMMCCNHMI7HW227BKP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/A5RLQVITWMMCCNHMI7HW227BKP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/A5RLQVITWMMCCNHMI7HW227BKP/action/storage_attestation","attest_author":"https://pith.science/pith/A5RLQVITWMMCCNHMI7HW227BKP/action/author_attestation","sign_citation":"https://pith.science/pith/A5RLQVITWMMCCNHMI7HW227BKP/action/citation_signature","submit_replication":"https://pith.science/pith/A5RLQVITWMMCCNHMI7HW227BKP/action/replication_record"}},"created_at":"2026-07-05T06:35:55.557730+00:00","updated_at":"2026-07-05T06:35:55.557730+00:00"}