{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:XKOUHUPNIDIHFZOSBHLEZBDFHD","short_pith_number":"pith:XKOUHUPN","canonical_record":{"source":{"id":"2605.19634","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-05-19T10:18:46Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"85cdbcd6e078bef0bf6955ea0a759a3228acf010674331698a8cde5397b5a6aa","abstract_canon_sha256":"62f38261a58dc36e4e81c68f799cf2b6f76ab74acd121a0164a0a9f8b6bc6932"},"schema_version":"1.0"},"canonical_sha256":"ba9d43d1ed40d072e5d209d64c846538f06cfa740bb365d05a0eddeecaa99baf","source":{"kind":"arxiv","id":"2605.19634","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.19634","created_at":"2026-05-20T01:05:55Z"},{"alias_kind":"arxiv_version","alias_value":"2605.19634v1","created_at":"2026-05-20T01:05:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.19634","created_at":"2026-05-20T01:05:55Z"},{"alias_kind":"pith_short_12","alias_value":"XKOUHUPNIDIH","created_at":"2026-05-20T01:05:55Z"},{"alias_kind":"pith_short_16","alias_value":"XKOUHUPNIDIHFZOS","created_at":"2026-05-20T01:05:55Z"},{"alias_kind":"pith_short_8","alias_value":"XKOUHUPN","created_at":"2026-05-20T01:05:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:XKOUHUPNIDIHFZOSBHLEZBDFHD","target":"record","payload":{"canonical_record":{"source":{"id":"2605.19634","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-05-19T10:18:46Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"85cdbcd6e078bef0bf6955ea0a759a3228acf010674331698a8cde5397b5a6aa","abstract_canon_sha256":"62f38261a58dc36e4e81c68f799cf2b6f76ab74acd121a0164a0a9f8b6bc6932"},"schema_version":"1.0"},"canonical_sha256":"ba9d43d1ed40d072e5d209d64c846538f06cfa740bb365d05a0eddeecaa99baf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T01:05:55.237277Z","signature_b64":"sQ8uxNBjko93RQATZLD4on8DPfvAMSfo9ZJNZVMulm4va5YbvM/Rjv8wSMlHy7c2NQKmwLPfuhiX8YDetaTpCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ba9d43d1ed40d072e5d209d64c846538f06cfa740bb365d05a0eddeecaa99baf","last_reissued_at":"2026-05-20T01:05:55.236676Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T01:05:55.236676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.19634","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":"2026-05-20T01:05:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rUi1ODcTHlbMj4eg0NtF2al8+HZ/lT3uGSrSlPMAde0bGd/Xz0HXu3q1Aaw0qHkI2LUgc3JzDzVqvS3Q3SxJCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T12:23:42.731752Z"},"content_sha256":"4b2c89fc2f92e9d97c460d0477ad53c3db2552d1e28dd1f17fb85ecaf975af4c","schema_version":"1.0","event_id":"sha256:4b2c89fc2f92e9d97c460d0477ad53c3db2552d1e28dd1f17fb85ecaf975af4c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:XKOUHUPNIDIHFZOSBHLEZBDFHD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"P2DNav: Panorama-to-Downview Reasoning for Zero-shot Vision-and-Language Navigation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CV","authors_text":"Chengju Liu, Haojie Dai, Jinlong Li, Kai Sheng, Liuyi Wang, Qijun Chen, Yongrui Qin, Zongtao He","submitted_at":"2026-05-19T10:18:46Z","abstract_excerpt":"Vision-and-language navigation (VLN) requires an embodied agent to ground natural-language instructions into executable navigation actions in unseen environments. Existing zero-shot methods typically rely on additional waypoint prediction modules, which often entangle high-level directional reasoning with fine-grained local grounding, leading to error-prone and unstable decisions. In this paper, we propose P2DNav, a hierarchical framework for zero-shot vision-and-language navigation. P2DNav consists of three core components: Panorama-to-Downview (P2D), Sliding-Window Dialogue Memory (SDM), and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.19634","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/2605.19634/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":"2026-05-20T01:05:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CK4FWDi2+cST1yskTuQD9RqUv93DP3moGqy8/rj9zwO8nJJfL6Gx94B1tvgl3qj9zAVaVV8lTImlc0zwIa44BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T12:23:42.732422Z"},"content_sha256":"b4a3732f14537aa3cb98401635ddd89a521abe2a55df18c4ae7eddfc704f1ccf","schema_version":"1.0","event_id":"sha256:b4a3732f14537aa3cb98401635ddd89a521abe2a55df18c4ae7eddfc704f1ccf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XKOUHUPNIDIHFZOSBHLEZBDFHD/bundle.json","state_url":"https://pith.science/pith/XKOUHUPNIDIHFZOSBHLEZBDFHD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XKOUHUPNIDIHFZOSBHLEZBDFHD/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":"2026-05-25T12:23:42Z","links":{"resolver":"https://pith.science/pith/XKOUHUPNIDIHFZOSBHLEZBDFHD","bundle":"https://pith.science/pith/XKOUHUPNIDIHFZOSBHLEZBDFHD/bundle.json","state":"https://pith.science/pith/XKOUHUPNIDIHFZOSBHLEZBDFHD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XKOUHUPNIDIHFZOSBHLEZBDFHD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:XKOUHUPNIDIHFZOSBHLEZBDFHD","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":"62f38261a58dc36e4e81c68f799cf2b6f76ab74acd121a0164a0a9f8b6bc6932","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-05-19T10:18:46Z","title_canon_sha256":"85cdbcd6e078bef0bf6955ea0a759a3228acf010674331698a8cde5397b5a6aa"},"schema_version":"1.0","source":{"id":"2605.19634","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.19634","created_at":"2026-05-20T01:05:55Z"},{"alias_kind":"arxiv_version","alias_value":"2605.19634v1","created_at":"2026-05-20T01:05:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.19634","created_at":"2026-05-20T01:05:55Z"},{"alias_kind":"pith_short_12","alias_value":"XKOUHUPNIDIH","created_at":"2026-05-20T01:05:55Z"},{"alias_kind":"pith_short_16","alias_value":"XKOUHUPNIDIHFZOS","created_at":"2026-05-20T01:05:55Z"},{"alias_kind":"pith_short_8","alias_value":"XKOUHUPN","created_at":"2026-05-20T01:05:55Z"}],"graph_snapshots":[{"event_id":"sha256:b4a3732f14537aa3cb98401635ddd89a521abe2a55df18c4ae7eddfc704f1ccf","target":"graph","created_at":"2026-05-20T01:05:55Z","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/2605.19634/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Vision-and-language navigation (VLN) requires an embodied agent to ground natural-language instructions into executable navigation actions in unseen environments. Existing zero-shot methods typically rely on additional waypoint prediction modules, which often entangle high-level directional reasoning with fine-grained local grounding, leading to error-prone and unstable decisions. In this paper, we propose P2DNav, a hierarchical framework for zero-shot vision-and-language navigation. P2DNav consists of three core components: Panorama-to-Downview (P2D), Sliding-Window Dialogue Memory (SDM), and","authors_text":"Chengju Liu, Haojie Dai, Jinlong Li, Kai Sheng, Liuyi Wang, Qijun Chen, Yongrui Qin, Zongtao He","cross_cats":["cs.AI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-05-19T10:18:46Z","title":"P2DNav: Panorama-to-Downview Reasoning for Zero-shot Vision-and-Language Navigation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.19634","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":"sha256:4b2c89fc2f92e9d97c460d0477ad53c3db2552d1e28dd1f17fb85ecaf975af4c","target":"record","created_at":"2026-05-20T01:05:55Z","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":"62f38261a58dc36e4e81c68f799cf2b6f76ab74acd121a0164a0a9f8b6bc6932","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-05-19T10:18:46Z","title_canon_sha256":"85cdbcd6e078bef0bf6955ea0a759a3228acf010674331698a8cde5397b5a6aa"},"schema_version":"1.0","source":{"id":"2605.19634","kind":"arxiv","version":1}},"canonical_sha256":"ba9d43d1ed40d072e5d209d64c846538f06cfa740bb365d05a0eddeecaa99baf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ba9d43d1ed40d072e5d209d64c846538f06cfa740bb365d05a0eddeecaa99baf","first_computed_at":"2026-05-20T01:05:55.236676Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T01:05:55.236676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sQ8uxNBjko93RQATZLD4on8DPfvAMSfo9ZJNZVMulm4va5YbvM/Rjv8wSMlHy7c2NQKmwLPfuhiX8YDetaTpCg==","signature_status":"signed_v1","signed_at":"2026-05-20T01:05:55.237277Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.19634","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b2c89fc2f92e9d97c460d0477ad53c3db2552d1e28dd1f17fb85ecaf975af4c","sha256:b4a3732f14537aa3cb98401635ddd89a521abe2a55df18c4ae7eddfc704f1ccf"],"state_sha256":"8e9b0285715a2f88d681452574d7d40cab1891e35cafa0c11db5d0ac1ed86bd7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XGAgXg5WpR35KKfEyIoq13tQxD5bTZh7ZwqG0rlCuuQs5aOiVbAsEcEX7c7H2vW0PxQJuu0Ya3Xnmc8AI0MYCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T12:23:42.736077Z","bundle_sha256":"eec995f5d1c2349ab610170d65741e8e0cd8a4a0015c02fe915a3d42ff276be4"}}