{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:6UMXX5NP5ZUMH36LETVDYOXBTV","short_pith_number":"pith:6UMXX5NP","canonical_record":{"source":{"id":"1512.01666","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2015-12-05T13:45:47Z","cross_cats_sorted":[],"title_canon_sha256":"97be71a90629a9d66a6475aa53d72e50d2c45a70ad2cdd0ae0780e577f56c7d2","abstract_canon_sha256":"c009cc6071b7bbe4b392cf2737f4a068f998b374d951c8507bafe45b75445ea8"},"schema_version":"1.0"},"canonical_sha256":"f5197bf5afee68c3efcb24ea3c3ae19d60c27ce6e5817ee9f3278eb2b0a89141","source":{"kind":"arxiv","id":"1512.01666","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.01666","created_at":"2026-05-18T01:25:10Z"},{"alias_kind":"arxiv_version","alias_value":"1512.01666v1","created_at":"2026-05-18T01:25:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.01666","created_at":"2026-05-18T01:25:10Z"},{"alias_kind":"pith_short_12","alias_value":"6UMXX5NP5ZUM","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6UMXX5NP5ZUMH36L","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6UMXX5NP","created_at":"2026-05-18T12:29:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:6UMXX5NP5ZUMH36LETVDYOXBTV","target":"record","payload":{"canonical_record":{"source":{"id":"1512.01666","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2015-12-05T13:45:47Z","cross_cats_sorted":[],"title_canon_sha256":"97be71a90629a9d66a6475aa53d72e50d2c45a70ad2cdd0ae0780e577f56c7d2","abstract_canon_sha256":"c009cc6071b7bbe4b392cf2737f4a068f998b374d951c8507bafe45b75445ea8"},"schema_version":"1.0"},"canonical_sha256":"f5197bf5afee68c3efcb24ea3c3ae19d60c27ce6e5817ee9f3278eb2b0a89141","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:25:10.711461Z","signature_b64":"Dmn55YzSbzuxvXKbthJr2opDzfQoc0sggjYBWe1SXmx81NMVmvaeX48y+YQTOGkLDKh5ymlylEBbM1FMbPeGBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f5197bf5afee68c3efcb24ea3c3ae19d60c27ce6e5817ee9f3278eb2b0a89141","last_reissued_at":"2026-05-18T01:25:10.710987Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:25:10.710987Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.01666","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":"2026-05-18T01:25:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HMNg5Zz5cey1c+pGIaXmN4g4ViMZsaFfIJPJHLLQnVOT4za4ORfDgGUWTXZhhFUpgTmhZhnNj8531MOM0w88CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T19:33:10.639636Z"},"content_sha256":"96a342997dd9e2d5720ccb5e2db75f6162715d002cfcace6a9c71a42e9fd49cd","schema_version":"1.0","event_id":"sha256:96a342997dd9e2d5720ccb5e2db75f6162715d002cfcace6a9c71a42e9fd49cd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:6UMXX5NP5ZUMH36LETVDYOXBTV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Stochastic Collapsed Variational Inference for Sequential Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"stat.ML","authors_text":"Pengyu Wang, Phil Blunsom","submitted_at":"2015-12-05T13:45:47Z","abstract_excerpt":"Stochastic variational inference for collapsed models has recently been successfully applied to large scale topic modelling. In this paper, we propose a stochastic collapsed variational inference algorithm in the sequential data setting. Our algorithm is applicable to both finite hidden Markov models and hierarchical Dirichlet process hidden Markov models, and to any datasets generated by emission distributions in the exponential family. Our experiment results on two discrete datasets show that our inference is both more efficient and more accurate than its uncollapsed version, stochastic vari"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.01666","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":"2026-05-18T01:25:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"09cz8iQlwimJFFjdBeuDfXpNLl9Bq/9OYTP/jOW2LUoUHes/lAuj1WL4J5RLZeCfHjRio1HlSAyXZn/KaFg4DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T19:33:10.640331Z"},"content_sha256":"f08d517a6d6738c68625446bb372345d66a559ec881214ef5c49d2e7f9ad7d55","schema_version":"1.0","event_id":"sha256:f08d517a6d6738c68625446bb372345d66a559ec881214ef5c49d2e7f9ad7d55"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6UMXX5NP5ZUMH36LETVDYOXBTV/bundle.json","state_url":"https://pith.science/pith/6UMXX5NP5ZUMH36LETVDYOXBTV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6UMXX5NP5ZUMH36LETVDYOXBTV/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":"2026-05-29T19:33:10Z","links":{"resolver":"https://pith.science/pith/6UMXX5NP5ZUMH36LETVDYOXBTV","bundle":"https://pith.science/pith/6UMXX5NP5ZUMH36LETVDYOXBTV/bundle.json","state":"https://pith.science/pith/6UMXX5NP5ZUMH36LETVDYOXBTV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6UMXX5NP5ZUMH36LETVDYOXBTV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:6UMXX5NP5ZUMH36LETVDYOXBTV","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":"c009cc6071b7bbe4b392cf2737f4a068f998b374d951c8507bafe45b75445ea8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2015-12-05T13:45:47Z","title_canon_sha256":"97be71a90629a9d66a6475aa53d72e50d2c45a70ad2cdd0ae0780e577f56c7d2"},"schema_version":"1.0","source":{"id":"1512.01666","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.01666","created_at":"2026-05-18T01:25:10Z"},{"alias_kind":"arxiv_version","alias_value":"1512.01666v1","created_at":"2026-05-18T01:25:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.01666","created_at":"2026-05-18T01:25:10Z"},{"alias_kind":"pith_short_12","alias_value":"6UMXX5NP5ZUM","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6UMXX5NP5ZUMH36L","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6UMXX5NP","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:f08d517a6d6738c68625446bb372345d66a559ec881214ef5c49d2e7f9ad7d55","target":"graph","created_at":"2026-05-18T01:25:10Z","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":"Stochastic variational inference for collapsed models has recently been successfully applied to large scale topic modelling. In this paper, we propose a stochastic collapsed variational inference algorithm in the sequential data setting. Our algorithm is applicable to both finite hidden Markov models and hierarchical Dirichlet process hidden Markov models, and to any datasets generated by emission distributions in the exponential family. Our experiment results on two discrete datasets show that our inference is both more efficient and more accurate than its uncollapsed version, stochastic vari","authors_text":"Pengyu Wang, Phil Blunsom","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2015-12-05T13:45:47Z","title":"Stochastic Collapsed Variational Inference for Sequential Data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.01666","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":"sha256:96a342997dd9e2d5720ccb5e2db75f6162715d002cfcace6a9c71a42e9fd49cd","target":"record","created_at":"2026-05-18T01:25:10Z","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":"c009cc6071b7bbe4b392cf2737f4a068f998b374d951c8507bafe45b75445ea8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"stat.ML","submitted_at":"2015-12-05T13:45:47Z","title_canon_sha256":"97be71a90629a9d66a6475aa53d72e50d2c45a70ad2cdd0ae0780e577f56c7d2"},"schema_version":"1.0","source":{"id":"1512.01666","kind":"arxiv","version":1}},"canonical_sha256":"f5197bf5afee68c3efcb24ea3c3ae19d60c27ce6e5817ee9f3278eb2b0a89141","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f5197bf5afee68c3efcb24ea3c3ae19d60c27ce6e5817ee9f3278eb2b0a89141","first_computed_at":"2026-05-18T01:25:10.710987Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:25:10.710987Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Dmn55YzSbzuxvXKbthJr2opDzfQoc0sggjYBWe1SXmx81NMVmvaeX48y+YQTOGkLDKh5ymlylEBbM1FMbPeGBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:25:10.711461Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.01666","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:96a342997dd9e2d5720ccb5e2db75f6162715d002cfcace6a9c71a42e9fd49cd","sha256:f08d517a6d6738c68625446bb372345d66a559ec881214ef5c49d2e7f9ad7d55"],"state_sha256":"8ca2423a52cefdbeb197e7daaa6c06074d3436f78e870ace46b70247388cf2bd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yaLGPU/E36HovKSJAbfr9izHHJPSmIAeYi+eemWK92Lgxc19hhFsFJ9lEHZHw4atH7rQMmc2DM5TfHX5OiFUAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T19:33:10.644038Z","bundle_sha256":"4a532d2a04f3a910758fa1bedc715443f4c7ae91365a74d3d440e257179511a0"}}