{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:X33RATQVKWUP5BJGMXLZIISW6Z","short_pith_number":"pith:X33RATQV","canonical_record":{"source":{"id":"1611.01024","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2016-11-03T14:01:20Z","cross_cats_sorted":[],"title_canon_sha256":"cd903f881e4c1b19761acb079c7f15b45028c4cee3d865ba05f8cbaed31ee1aa","abstract_canon_sha256":"b7fb9fcf65519012fd139a8f6d599b1a27c211c31117d802a208eb4851cda4fb"},"schema_version":"1.0"},"canonical_sha256":"bef7104e1555a8fe852665d7942256f64602add5758feb12f9c1e3dd0d4d35cf","source":{"kind":"arxiv","id":"1611.01024","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.01024","created_at":"2026-05-18T01:00:17Z"},{"alias_kind":"arxiv_version","alias_value":"1611.01024v1","created_at":"2026-05-18T01:00:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.01024","created_at":"2026-05-18T01:00:17Z"},{"alias_kind":"pith_short_12","alias_value":"X33RATQVKWUP","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"X33RATQVKWUP5BJG","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"X33RATQV","created_at":"2026-05-18T12:30:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:X33RATQVKWUP5BJGMXLZIISW6Z","target":"record","payload":{"canonical_record":{"source":{"id":"1611.01024","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2016-11-03T14:01:20Z","cross_cats_sorted":[],"title_canon_sha256":"cd903f881e4c1b19761acb079c7f15b45028c4cee3d865ba05f8cbaed31ee1aa","abstract_canon_sha256":"b7fb9fcf65519012fd139a8f6d599b1a27c211c31117d802a208eb4851cda4fb"},"schema_version":"1.0"},"canonical_sha256":"bef7104e1555a8fe852665d7942256f64602add5758feb12f9c1e3dd0d4d35cf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:00:17.896462Z","signature_b64":"wTuFgq7q+uoK7x1X5id5ycSswc4J+98frzNyiNc9knGj1QAZ4kRS7HEwu4GAaBwBxKW0q5seOjdp3lHuOc2kCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bef7104e1555a8fe852665d7942256f64602add5758feb12f9c1e3dd0d4d35cf","last_reissued_at":"2026-05-18T01:00:17.895818Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:00:17.895818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.01024","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":"2026-05-18T01:00:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BJC4hnjmOP3eAYUV/GJlT2zhbEjH10awqGCW9+WTzldtfrlEO+YrT6QvDD+zs200rOGAMv8cH9SsMQTAXSuuDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T19:20:08.133490Z"},"content_sha256":"4275423ae34c6a0ef68f569711af78c7851fa44a0284aff2c250980583cd2c55","schema_version":"1.0","event_id":"sha256:4275423ae34c6a0ef68f569711af78c7851fa44a0284aff2c250980583cd2c55"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:X33RATQVKWUP5BJGMXLZIISW6Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modeling Website Visits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"stat.AP","authors_text":"Adrien S. Hitz, Robin J. Evans","submitted_at":"2016-11-03T14:01:20Z","abstract_excerpt":"We propose a multivariate model for the number of hits on a set of popular websites, and show it to accurately reflect the behavior recorded in a data set of Internet users in the United States. We assume that the random vector of visits is distributed according to a censored multivariate normal with marginals transformed to be discrete Pareto IV and, following the ideas of Gaussian graphical models, we enforce sparsity on the inverse covariance matrix to reduce dimensionality and to visualize the dependence structure as a graph. The model allows for an easy inclusion of covariates and is usef"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.01024","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":"2026-05-18T01:00:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q4cfWc77ri3vw7wPp/AdDvXTujM6uLC0Q6KsLD1gZNj3qp0g8lMrQLLzXOnAch+Gl4cRtFmjGFG7WnCzx6+fBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T19:20:08.134164Z"},"content_sha256":"756dd31928bb1522ea2b2f98b0bd3d7fdc8b93c4c1180f8c6098757ec9050ad1","schema_version":"1.0","event_id":"sha256:756dd31928bb1522ea2b2f98b0bd3d7fdc8b93c4c1180f8c6098757ec9050ad1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X33RATQVKWUP5BJGMXLZIISW6Z/bundle.json","state_url":"https://pith.science/pith/X33RATQVKWUP5BJGMXLZIISW6Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X33RATQVKWUP5BJGMXLZIISW6Z/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":"2026-05-26T19:20:08Z","links":{"resolver":"https://pith.science/pith/X33RATQVKWUP5BJGMXLZIISW6Z","bundle":"https://pith.science/pith/X33RATQVKWUP5BJGMXLZIISW6Z/bundle.json","state":"https://pith.science/pith/X33RATQVKWUP5BJGMXLZIISW6Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X33RATQVKWUP5BJGMXLZIISW6Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:X33RATQVKWUP5BJGMXLZIISW6Z","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":"b7fb9fcf65519012fd139a8f6d599b1a27c211c31117d802a208eb4851cda4fb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2016-11-03T14:01:20Z","title_canon_sha256":"cd903f881e4c1b19761acb079c7f15b45028c4cee3d865ba05f8cbaed31ee1aa"},"schema_version":"1.0","source":{"id":"1611.01024","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.01024","created_at":"2026-05-18T01:00:17Z"},{"alias_kind":"arxiv_version","alias_value":"1611.01024v1","created_at":"2026-05-18T01:00:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.01024","created_at":"2026-05-18T01:00:17Z"},{"alias_kind":"pith_short_12","alias_value":"X33RATQVKWUP","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"X33RATQVKWUP5BJG","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"X33RATQV","created_at":"2026-05-18T12:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:756dd31928bb1522ea2b2f98b0bd3d7fdc8b93c4c1180f8c6098757ec9050ad1","target":"graph","created_at":"2026-05-18T01:00:17Z","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":"We propose a multivariate model for the number of hits on a set of popular websites, and show it to accurately reflect the behavior recorded in a data set of Internet users in the United States. We assume that the random vector of visits is distributed according to a censored multivariate normal with marginals transformed to be discrete Pareto IV and, following the ideas of Gaussian graphical models, we enforce sparsity on the inverse covariance matrix to reduce dimensionality and to visualize the dependence structure as a graph. The model allows for an easy inclusion of covariates and is usef","authors_text":"Adrien S. Hitz, Robin J. Evans","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2016-11-03T14:01:20Z","title":"Modeling Website Visits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.01024","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":"sha256:4275423ae34c6a0ef68f569711af78c7851fa44a0284aff2c250980583cd2c55","target":"record","created_at":"2026-05-18T01:00:17Z","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":"b7fb9fcf65519012fd139a8f6d599b1a27c211c31117d802a208eb4851cda4fb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.AP","submitted_at":"2016-11-03T14:01:20Z","title_canon_sha256":"cd903f881e4c1b19761acb079c7f15b45028c4cee3d865ba05f8cbaed31ee1aa"},"schema_version":"1.0","source":{"id":"1611.01024","kind":"arxiv","version":1}},"canonical_sha256":"bef7104e1555a8fe852665d7942256f64602add5758feb12f9c1e3dd0d4d35cf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bef7104e1555a8fe852665d7942256f64602add5758feb12f9c1e3dd0d4d35cf","first_computed_at":"2026-05-18T01:00:17.895818Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:00:17.895818Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wTuFgq7q+uoK7x1X5id5ycSswc4J+98frzNyiNc9knGj1QAZ4kRS7HEwu4GAaBwBxKW0q5seOjdp3lHuOc2kCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:00:17.896462Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.01024","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4275423ae34c6a0ef68f569711af78c7851fa44a0284aff2c250980583cd2c55","sha256:756dd31928bb1522ea2b2f98b0bd3d7fdc8b93c4c1180f8c6098757ec9050ad1"],"state_sha256":"7568aac12065ed98a2f351e2ecabbdb27dec563e0f42e1b96bdf51f3e74cc355"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/a2MNECn8E66Hv57LkhItzRBfFPDRa0Uck9Yh+9U5LLJwhi1nNByFjS+QY9svaF56DJG+1aZLwO4uoOfkDdqDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T19:20:08.137858Z","bundle_sha256":"54846fe5dafbef68a2280d6593d64c02505e1ee7e78cff51be46c878df05198c"}}