{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:4MKJNONP7JIN74AGMJAFSFHZOI","short_pith_number":"pith:4MKJNONP","canonical_record":{"source":{"id":"1308.0419","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2013-08-02T07:10:47Z","cross_cats_sorted":[],"title_canon_sha256":"50ec4f582debe06b09d2f64f14ac4ef84c0d2d1420a0b826e793b57e5b2441fa","abstract_canon_sha256":"dd6d1c740f8209610a4ff54fe2c6bd71d640baeb67018c05adb28825f6dc3c9c"},"schema_version":"1.0"},"canonical_sha256":"e31496b9affa50dff00662405914f97230cffb1a6bec0888a4e756adf909023e","source":{"kind":"arxiv","id":"1308.0419","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.0419","created_at":"2026-05-18T02:52:14Z"},{"alias_kind":"arxiv_version","alias_value":"1308.0419v2","created_at":"2026-05-18T02:52:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.0419","created_at":"2026-05-18T02:52:14Z"},{"alias_kind":"pith_short_12","alias_value":"4MKJNONP7JIN","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4MKJNONP7JIN74AG","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4MKJNONP","created_at":"2026-05-18T12:27:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:4MKJNONP7JIN74AGMJAFSFHZOI","target":"record","payload":{"canonical_record":{"source":{"id":"1308.0419","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2013-08-02T07:10:47Z","cross_cats_sorted":[],"title_canon_sha256":"50ec4f582debe06b09d2f64f14ac4ef84c0d2d1420a0b826e793b57e5b2441fa","abstract_canon_sha256":"dd6d1c740f8209610a4ff54fe2c6bd71d640baeb67018c05adb28825f6dc3c9c"},"schema_version":"1.0"},"canonical_sha256":"e31496b9affa50dff00662405914f97230cffb1a6bec0888a4e756adf909023e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:52:14.933265Z","signature_b64":"NSp+2tdIOEZmiIl+3lCy2nu3E3pSdDF3ft6YlWtEYN0OCKdykwOJgt3h1jj9LikXVeCB9W2C5m3XrXZDJxbkDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e31496b9affa50dff00662405914f97230cffb1a6bec0888a4e756adf909023e","last_reissued_at":"2026-05-18T02:52:14.932671Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:52:14.932671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.0419","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:52:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aFleEjQArrftQ0/xRvDYMwrmRxBo/UM3YVcUzZRU6n/17T7e+F+c82wD3Q9Xc/q9cnDUGR2XYHfvittyeKu+Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T22:33:06.469127Z"},"content_sha256":"c97b23796826271fe4c3e7ddb226fa61c32696599ca88dcbcfb94e946fe336d3","schema_version":"1.0","event_id":"sha256:c97b23796826271fe4c3e7ddb226fa61c32696599ca88dcbcfb94e946fe336d3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:4MKJNONP7JIN74AGMJAFSFHZOI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Inverse Procedural Modeling of Facade Layouts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.GR","authors_text":"Dong-Ming Yan, Fuzhang Wu, Peter Wonka, Weiming Dong, Xiaopeng Zhang","submitted_at":"2013-08-02T07:10:47Z","abstract_excerpt":"In this paper, we address the following research problem: How can we generate a meaningful split grammar that explains a given facade layout? To evaluate if a grammar is meaningful, we propose a cost function based on the description length and minimize this cost using an approximate dynamic programming framework. Our evaluation indicates that our framework extracts meaningful split grammars that are competitive with those of expert users, while some users and all competing automatic solutions are less successful."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.0419","kind":"arxiv","version":2},"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":"2026-05-18T02:52:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YPKG4R8/MzVSrze4uym7gHVckGoGEyGXj+YBMRgkt0FNRj9/SExJz1ZQzGYJjstoNIQIw+06p7m69XoNZXdYBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T22:33:06.469586Z"},"content_sha256":"1dff96477c62a4f95204b27c908d49e559c3dc235897478ff14f473566ce62cb","schema_version":"1.0","event_id":"sha256:1dff96477c62a4f95204b27c908d49e559c3dc235897478ff14f473566ce62cb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4MKJNONP7JIN74AGMJAFSFHZOI/bundle.json","state_url":"https://pith.science/pith/4MKJNONP7JIN74AGMJAFSFHZOI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4MKJNONP7JIN74AGMJAFSFHZOI/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":"2026-05-31T22:33:06Z","links":{"resolver":"https://pith.science/pith/4MKJNONP7JIN74AGMJAFSFHZOI","bundle":"https://pith.science/pith/4MKJNONP7JIN74AGMJAFSFHZOI/bundle.json","state":"https://pith.science/pith/4MKJNONP7JIN74AGMJAFSFHZOI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4MKJNONP7JIN74AGMJAFSFHZOI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:4MKJNONP7JIN74AGMJAFSFHZOI","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":"dd6d1c740f8209610a4ff54fe2c6bd71d640baeb67018c05adb28825f6dc3c9c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2013-08-02T07:10:47Z","title_canon_sha256":"50ec4f582debe06b09d2f64f14ac4ef84c0d2d1420a0b826e793b57e5b2441fa"},"schema_version":"1.0","source":{"id":"1308.0419","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.0419","created_at":"2026-05-18T02:52:14Z"},{"alias_kind":"arxiv_version","alias_value":"1308.0419v2","created_at":"2026-05-18T02:52:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.0419","created_at":"2026-05-18T02:52:14Z"},{"alias_kind":"pith_short_12","alias_value":"4MKJNONP7JIN","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4MKJNONP7JIN74AG","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4MKJNONP","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:1dff96477c62a4f95204b27c908d49e559c3dc235897478ff14f473566ce62cb","target":"graph","created_at":"2026-05-18T02:52:14Z","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":"In this paper, we address the following research problem: How can we generate a meaningful split grammar that explains a given facade layout? To evaluate if a grammar is meaningful, we propose a cost function based on the description length and minimize this cost using an approximate dynamic programming framework. Our evaluation indicates that our framework extracts meaningful split grammars that are competitive with those of expert users, while some users and all competing automatic solutions are less successful.","authors_text":"Dong-Ming Yan, Fuzhang Wu, Peter Wonka, Weiming Dong, Xiaopeng Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2013-08-02T07:10:47Z","title":"Inverse Procedural Modeling of Facade Layouts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.0419","kind":"arxiv","version":2},"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:c97b23796826271fe4c3e7ddb226fa61c32696599ca88dcbcfb94e946fe336d3","target":"record","created_at":"2026-05-18T02:52:14Z","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":"dd6d1c740f8209610a4ff54fe2c6bd71d640baeb67018c05adb28825f6dc3c9c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.GR","submitted_at":"2013-08-02T07:10:47Z","title_canon_sha256":"50ec4f582debe06b09d2f64f14ac4ef84c0d2d1420a0b826e793b57e5b2441fa"},"schema_version":"1.0","source":{"id":"1308.0419","kind":"arxiv","version":2}},"canonical_sha256":"e31496b9affa50dff00662405914f97230cffb1a6bec0888a4e756adf909023e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e31496b9affa50dff00662405914f97230cffb1a6bec0888a4e756adf909023e","first_computed_at":"2026-05-18T02:52:14.932671Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:52:14.932671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NSp+2tdIOEZmiIl+3lCy2nu3E3pSdDF3ft6YlWtEYN0OCKdykwOJgt3h1jj9LikXVeCB9W2C5m3XrXZDJxbkDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:52:14.933265Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.0419","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c97b23796826271fe4c3e7ddb226fa61c32696599ca88dcbcfb94e946fe336d3","sha256:1dff96477c62a4f95204b27c908d49e559c3dc235897478ff14f473566ce62cb"],"state_sha256":"9303fa350ba45ee6e0f0d8730451add916dd227d8b4746924e4e4cb4e21e8b40"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ny9S8eNiVXeBYzdWOe7gsIbMLdwUYWFh6l1Vp1A6AX0kc7Ms0aADSvARirA/BrZoh2V9s+dsO7KpvJyIcswOBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T22:33:06.472061Z","bundle_sha256":"f9da0a1dc9f97f2abc5de655fdcabd680f4797963d29c79de47c16b3a74b9b60"}}