{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:XKE4ATLJSEYMTPJGJHV55HLCQK","short_pith_number":"pith:XKE4ATLJ","canonical_record":{"source":{"id":"2003.07490","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2020-03-17T01:34:56Z","cross_cats_sorted":[],"title_canon_sha256":"d3eefd7fbea71296670842d82881f12f10017bad9eddaa9aa30eb43add92ec74","abstract_canon_sha256":"69c81827c427919e880002b56e38fbb892bb3dd28936dd1553988feb08812395"},"schema_version":"1.0"},"canonical_sha256":"ba89c04d699130c9bd2649ebde9d62829e38b8f0bd9bd3ced2f47cc801a62bca","source":{"kind":"arxiv","id":"2003.07490","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.07490","created_at":"2026-07-05T01:12:41Z"},{"alias_kind":"arxiv_version","alias_value":"2003.07490v3","created_at":"2026-07-05T01:12:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.07490","created_at":"2026-07-05T01:12:41Z"},{"alias_kind":"pith_short_12","alias_value":"XKE4ATLJSEYM","created_at":"2026-07-05T01:12:41Z"},{"alias_kind":"pith_short_16","alias_value":"XKE4ATLJSEYMTPJG","created_at":"2026-07-05T01:12:41Z"},{"alias_kind":"pith_short_8","alias_value":"XKE4ATLJ","created_at":"2026-07-05T01:12:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:XKE4ATLJSEYMTPJGJHV55HLCQK","target":"record","payload":{"canonical_record":{"source":{"id":"2003.07490","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2020-03-17T01:34:56Z","cross_cats_sorted":[],"title_canon_sha256":"d3eefd7fbea71296670842d82881f12f10017bad9eddaa9aa30eb43add92ec74","abstract_canon_sha256":"69c81827c427919e880002b56e38fbb892bb3dd28936dd1553988feb08812395"},"schema_version":"1.0"},"canonical_sha256":"ba89c04d699130c9bd2649ebde9d62829e38b8f0bd9bd3ced2f47cc801a62bca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:12:41.059913Z","signature_b64":"tpJ0FEFGVkZ1+3Sgy202s76YBqXngYv3i2uuklsn52LitDTRFgFbjpQF1k96sgwwIk/Heo9DWyka25zhq3SlCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ba89c04d699130c9bd2649ebde9d62829e38b8f0bd9bd3ced2f47cc801a62bca","last_reissued_at":"2026-07-05T01:12:41.059450Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:12:41.059450Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.07490","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:12:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zHCi1aCNmwB+QtLgSTd+2FKL8tEcveJfdTgdunaSggSSil/bQcB5lmkWPLg5NxWP6ifKClkopZFg35ZvEgGlDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T03:03:24.475599Z"},"content_sha256":"a54ffa01624c45a61fcfdb30b1d5df96c07eea5528512d54a50c8eea15339f51","schema_version":"1.0","event_id":"sha256:a54ffa01624c45a61fcfdb30b1d5df96c07eea5528512d54a50c8eea15339f51"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:XKE4ATLJSEYMTPJGJHV55HLCQK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Recent Advances and Challenges in Task-oriented Dialog System","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Minlie Huang, Qi Zhu, Ryuichi Takanobu, Xiaoyan Zhu, Zheng Zhang","submitted_at":"2020-03-17T01:34:56Z","abstract_excerpt":"Due to the significance and value in human-computer interaction and natural language processing, task-oriented dialog systems are attracting more and more attention in both academic and industrial communities. In this paper, we survey recent advances and challenges in task-oriented dialog systems. We also discuss three critical topics for task-oriented dialog systems: (1) improving data efficiency to facilitate dialog modeling in low-resource settings, (2) modeling multi-turn dynamics for dialog policy learning to achieve better task-completion performance, and (3) integrating domain ontology "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.07490","kind":"arxiv","version":3},"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/2003.07490/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":"2026-07-05T01:12:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mnGeMMYg6SeeUIa9xbHqpqDKnN+3Vm1mQw/XmSzUXB9RWwbxdPwsSR7pV5sOpodPeVwDUmjvw/iCtPirTr4kCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T03:03:24.476123Z"},"content_sha256":"ec25c0a69d8604bfbeb867df28a6da7e08db67e541eca109c715c1866ceb964f","schema_version":"1.0","event_id":"sha256:ec25c0a69d8604bfbeb867df28a6da7e08db67e541eca109c715c1866ceb964f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XKE4ATLJSEYMTPJGJHV55HLCQK/bundle.json","state_url":"https://pith.science/pith/XKE4ATLJSEYMTPJGJHV55HLCQK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XKE4ATLJSEYMTPJGJHV55HLCQK/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":"2026-08-09T03:03:24Z","links":{"resolver":"https://pith.science/pith/XKE4ATLJSEYMTPJGJHV55HLCQK","bundle":"https://pith.science/pith/XKE4ATLJSEYMTPJGJHV55HLCQK/bundle.json","state":"https://pith.science/pith/XKE4ATLJSEYMTPJGJHV55HLCQK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XKE4ATLJSEYMTPJGJHV55HLCQK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:XKE4ATLJSEYMTPJGJHV55HLCQK","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":"69c81827c427919e880002b56e38fbb892bb3dd28936dd1553988feb08812395","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2020-03-17T01:34:56Z","title_canon_sha256":"d3eefd7fbea71296670842d82881f12f10017bad9eddaa9aa30eb43add92ec74"},"schema_version":"1.0","source":{"id":"2003.07490","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.07490","created_at":"2026-07-05T01:12:41Z"},{"alias_kind":"arxiv_version","alias_value":"2003.07490v3","created_at":"2026-07-05T01:12:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.07490","created_at":"2026-07-05T01:12:41Z"},{"alias_kind":"pith_short_12","alias_value":"XKE4ATLJSEYM","created_at":"2026-07-05T01:12:41Z"},{"alias_kind":"pith_short_16","alias_value":"XKE4ATLJSEYMTPJG","created_at":"2026-07-05T01:12:41Z"},{"alias_kind":"pith_short_8","alias_value":"XKE4ATLJ","created_at":"2026-07-05T01:12:41Z"}],"graph_snapshots":[{"event_id":"sha256:ec25c0a69d8604bfbeb867df28a6da7e08db67e541eca109c715c1866ceb964f","target":"graph","created_at":"2026-07-05T01:12:41Z","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/2003.07490/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Due to the significance and value in human-computer interaction and natural language processing, task-oriented dialog systems are attracting more and more attention in both academic and industrial communities. In this paper, we survey recent advances and challenges in task-oriented dialog systems. We also discuss three critical topics for task-oriented dialog systems: (1) improving data efficiency to facilitate dialog modeling in low-resource settings, (2) modeling multi-turn dynamics for dialog policy learning to achieve better task-completion performance, and (3) integrating domain ontology ","authors_text":"Minlie Huang, Qi Zhu, Ryuichi Takanobu, Xiaoyan Zhu, Zheng Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2020-03-17T01:34:56Z","title":"Recent Advances and Challenges in Task-oriented Dialog System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.07490","kind":"arxiv","version":3},"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:a54ffa01624c45a61fcfdb30b1d5df96c07eea5528512d54a50c8eea15339f51","target":"record","created_at":"2026-07-05T01:12:41Z","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":"69c81827c427919e880002b56e38fbb892bb3dd28936dd1553988feb08812395","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2020-03-17T01:34:56Z","title_canon_sha256":"d3eefd7fbea71296670842d82881f12f10017bad9eddaa9aa30eb43add92ec74"},"schema_version":"1.0","source":{"id":"2003.07490","kind":"arxiv","version":3}},"canonical_sha256":"ba89c04d699130c9bd2649ebde9d62829e38b8f0bd9bd3ced2f47cc801a62bca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ba89c04d699130c9bd2649ebde9d62829e38b8f0bd9bd3ced2f47cc801a62bca","first_computed_at":"2026-07-05T01:12:41.059450Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:12:41.059450Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tpJ0FEFGVkZ1+3Sgy202s76YBqXngYv3i2uuklsn52LitDTRFgFbjpQF1k96sgwwIk/Heo9DWyka25zhq3SlCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:12:41.059913Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.07490","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a54ffa01624c45a61fcfdb30b1d5df96c07eea5528512d54a50c8eea15339f51","sha256:ec25c0a69d8604bfbeb867df28a6da7e08db67e541eca109c715c1866ceb964f"],"state_sha256":"dd7ddeed29d20caad520674c55aca55f9edc8e6be49071b3cce28492201e6329"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vZBCF063IclT7VM9QW0hL+yoah5Xy31p1ZEhkCxZQc06TOxK0tRuoFOZuZF8erH7W9ceF1nqIa3kzbQysgO9AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T03:03:24.481102Z","bundle_sha256":"907fdb9f71e7d42f922e57d6e6100a4678c1644b97119c69ab50d97f2ff933fd"}}