{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:7YV6NPQUORYLDFZ5FNKARDGEPE","short_pith_number":"pith:7YV6NPQU","canonical_record":{"source":{"id":"1708.03019","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2017-08-09T21:27:29Z","cross_cats_sorted":[],"title_canon_sha256":"ae43451c2313c798e093e18287f6653a9b3e9a94a7c6d79680d944b58ac76544","abstract_canon_sha256":"c77e75d1b138de9c56112ec714785d3e15bf94d321c6ed8a6ad519a506f7b270"},"schema_version":"1.0"},"canonical_sha256":"fe2be6be147470b1973d2b54088cc479188a4c5a50d210650ccba03b946b8641","source":{"kind":"arxiv","id":"1708.03019","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.03019","created_at":"2026-05-18T00:38:15Z"},{"alias_kind":"arxiv_version","alias_value":"1708.03019v1","created_at":"2026-05-18T00:38:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.03019","created_at":"2026-05-18T00:38:15Z"},{"alias_kind":"pith_short_12","alias_value":"7YV6NPQUORYL","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7YV6NPQUORYLDFZ5","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7YV6NPQU","created_at":"2026-05-18T12:31:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:7YV6NPQUORYLDFZ5FNKARDGEPE","target":"record","payload":{"canonical_record":{"source":{"id":"1708.03019","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2017-08-09T21:27:29Z","cross_cats_sorted":[],"title_canon_sha256":"ae43451c2313c798e093e18287f6653a9b3e9a94a7c6d79680d944b58ac76544","abstract_canon_sha256":"c77e75d1b138de9c56112ec714785d3e15bf94d321c6ed8a6ad519a506f7b270"},"schema_version":"1.0"},"canonical_sha256":"fe2be6be147470b1973d2b54088cc479188a4c5a50d210650ccba03b946b8641","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:38:15.187234Z","signature_b64":"nrzKJO45/sntv1EmDd3l51Rz0aoWsKO/GdYHtJ8txDMGhY7D/SH/4C93l1AqNC+jtT5MUynUCZwWXOu6w0sDAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe2be6be147470b1973d2b54088cc479188a4c5a50d210650ccba03b946b8641","last_reissued_at":"2026-05-18T00:38:15.186461Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:38:15.186461Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.03019","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":"2026-05-18T00:38:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W6Igtu2kZMEkCgm1QUF1bI8w2SW2kuTpeiyztUa1BSQtqwq+TatDpczSHq5xDU5fb9z/f6hil1r4JCSXMQigAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:01:09.354212Z"},"content_sha256":"a0569bbf6e19b7439a6175ae209f86ec9d91a48f5b79b48e80b1155aafe3f907","schema_version":"1.0","event_id":"sha256:a0569bbf6e19b7439a6175ae209f86ec9d91a48f5b79b48e80b1155aafe3f907"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:7YV6NPQUORYLDFZ5FNKARDGEPE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Addendum to: Summary Information for Reasoning About Hierarchical Plans","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.AI","authors_text":"Lavindra de Silva, Lin Padgham, Sebastian Sardina","submitted_at":"2017-08-09T21:27:29Z","abstract_excerpt":"Hierarchically structured agent plans are important for efficient planning and acting, and they also serve (among other things) to produce \"richer\" classical plans, composed not just of a sequence of primitive actions, but also \"abstract\" ones representing the supplied hierarchies. A crucial step for this and other approaches is deriving precondition and effect \"summaries\" from a given plan hierarchy. This paper provides mechanisms to do this for more pragmatic and conventional hierarchies than in the past. To this end, we formally define the notion of a precondition and an effect for a hierar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.03019","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":""},"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":"2026-05-18T00:38:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O0s7SYnKc/viHwR4dRJQ6dTRZfcGdG8Zmr1O2/YiAPKAYa54x614zYPg9U/uery8p9Poh6M9khciBf+9yuaoBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:01:09.354572Z"},"content_sha256":"26d4e2a2fa0c490acd918f455c606e89127284ec5d55c2588183073e05dc5f31","schema_version":"1.0","event_id":"sha256:26d4e2a2fa0c490acd918f455c606e89127284ec5d55c2588183073e05dc5f31"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7YV6NPQUORYLDFZ5FNKARDGEPE/bundle.json","state_url":"https://pith.science/pith/7YV6NPQUORYLDFZ5FNKARDGEPE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7YV6NPQUORYLDFZ5FNKARDGEPE/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":"2026-06-02T02:01:09Z","links":{"resolver":"https://pith.science/pith/7YV6NPQUORYLDFZ5FNKARDGEPE","bundle":"https://pith.science/pith/7YV6NPQUORYLDFZ5FNKARDGEPE/bundle.json","state":"https://pith.science/pith/7YV6NPQUORYLDFZ5FNKARDGEPE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7YV6NPQUORYLDFZ5FNKARDGEPE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7YV6NPQUORYLDFZ5FNKARDGEPE","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":"c77e75d1b138de9c56112ec714785d3e15bf94d321c6ed8a6ad519a506f7b270","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2017-08-09T21:27:29Z","title_canon_sha256":"ae43451c2313c798e093e18287f6653a9b3e9a94a7c6d79680d944b58ac76544"},"schema_version":"1.0","source":{"id":"1708.03019","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.03019","created_at":"2026-05-18T00:38:15Z"},{"alias_kind":"arxiv_version","alias_value":"1708.03019v1","created_at":"2026-05-18T00:38:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.03019","created_at":"2026-05-18T00:38:15Z"},{"alias_kind":"pith_short_12","alias_value":"7YV6NPQUORYL","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7YV6NPQUORYLDFZ5","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7YV6NPQU","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:26d4e2a2fa0c490acd918f455c606e89127284ec5d55c2588183073e05dc5f31","target":"graph","created_at":"2026-05-18T00:38:15Z","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"},"paper":{"abstract_excerpt":"Hierarchically structured agent plans are important for efficient planning and acting, and they also serve (among other things) to produce \"richer\" classical plans, composed not just of a sequence of primitive actions, but also \"abstract\" ones representing the supplied hierarchies. A crucial step for this and other approaches is deriving precondition and effect \"summaries\" from a given plan hierarchy. This paper provides mechanisms to do this for more pragmatic and conventional hierarchies than in the past. To this end, we formally define the notion of a precondition and an effect for a hierar","authors_text":"Lavindra de Silva, Lin Padgham, Sebastian Sardina","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2017-08-09T21:27:29Z","title":"Addendum to: Summary Information for Reasoning About Hierarchical Plans"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.03019","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:a0569bbf6e19b7439a6175ae209f86ec9d91a48f5b79b48e80b1155aafe3f907","target":"record","created_at":"2026-05-18T00:38:15Z","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":"c77e75d1b138de9c56112ec714785d3e15bf94d321c6ed8a6ad519a506f7b270","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2017-08-09T21:27:29Z","title_canon_sha256":"ae43451c2313c798e093e18287f6653a9b3e9a94a7c6d79680d944b58ac76544"},"schema_version":"1.0","source":{"id":"1708.03019","kind":"arxiv","version":1}},"canonical_sha256":"fe2be6be147470b1973d2b54088cc479188a4c5a50d210650ccba03b946b8641","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe2be6be147470b1973d2b54088cc479188a4c5a50d210650ccba03b946b8641","first_computed_at":"2026-05-18T00:38:15.186461Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:38:15.186461Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nrzKJO45/sntv1EmDd3l51Rz0aoWsKO/GdYHtJ8txDMGhY7D/SH/4C93l1AqNC+jtT5MUynUCZwWXOu6w0sDAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:38:15.187234Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.03019","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0569bbf6e19b7439a6175ae209f86ec9d91a48f5b79b48e80b1155aafe3f907","sha256:26d4e2a2fa0c490acd918f455c606e89127284ec5d55c2588183073e05dc5f31"],"state_sha256":"db724f621c99823f91a7384c0818080748c5cc705ee2d15a61e3aea2d45bd7c6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C1HVKjqx7dBfMyzIACi0CYEtPSwQmHasaBWlkcYlI0hKfqAdrFQeniXAKzQvcBXONWQyuiqFbf9L/VmzvAy0AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T02:01:09.356573Z","bundle_sha256":"4a8639c4557da1fa52437f08cfa5cc8054d7af5fa5ca942c9104bd0865af78f3"}}