{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:QHSE563DL2YCXY4NF5UC3RM67L","short_pith_number":"pith:QHSE563D","canonical_record":{"source":{"id":"1908.09987","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2019-08-27T02:14:52Z","cross_cats_sorted":["cs.IR"],"title_canon_sha256":"f5c30c5235411bae309c531baa89af992b7b5602ba2a3158aa98f206b7771b13","abstract_canon_sha256":"37a29a5533fccc1f93adbfcae1ce01cae9dc8efb7827191a252753afa09ef91e"},"schema_version":"1.0"},"canonical_sha256":"81e44efb635eb02be38d2f682dc59efacf2bfd2ec8f7ebda18579f10ef6e3354","source":{"kind":"arxiv","id":"1908.09987","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.09987","created_at":"2026-07-04T23:59:52Z"},{"alias_kind":"arxiv_version","alias_value":"1908.09987v1","created_at":"2026-07-04T23:59:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.09987","created_at":"2026-07-04T23:59:52Z"},{"alias_kind":"pith_short_12","alias_value":"QHSE563DL2YC","created_at":"2026-07-04T23:59:52Z"},{"alias_kind":"pith_short_16","alias_value":"QHSE563DL2YCXY4N","created_at":"2026-07-04T23:59:52Z"},{"alias_kind":"pith_short_8","alias_value":"QHSE563D","created_at":"2026-07-04T23:59:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:QHSE563DL2YCXY4NF5UC3RM67L","target":"record","payload":{"canonical_record":{"source":{"id":"1908.09987","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2019-08-27T02:14:52Z","cross_cats_sorted":["cs.IR"],"title_canon_sha256":"f5c30c5235411bae309c531baa89af992b7b5602ba2a3158aa98f206b7771b13","abstract_canon_sha256":"37a29a5533fccc1f93adbfcae1ce01cae9dc8efb7827191a252753afa09ef91e"},"schema_version":"1.0"},"canonical_sha256":"81e44efb635eb02be38d2f682dc59efacf2bfd2ec8f7ebda18579f10ef6e3354","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:59:52.553297Z","signature_b64":"tHT3BF5uZ3ONrSsv6VujBSFbwCHfsSyK1KD2hx0mhhZ5ceNUcvQiRE1yOUlSLl3eKnRKvujjlbQAa0dlrCoJCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"81e44efb635eb02be38d2f682dc59efacf2bfd2ec8f7ebda18579f10ef6e3354","last_reissued_at":"2026-07-04T23:59:52.552894Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:59:52.552894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.09987","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":"2026-07-04T23:59:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZxloWNwTcQRyONqo0d8irILePGnDcTGdlzDspkVpZAi4l6a+cQb7dr6wMYGDC3RUZzfLKQ5MP9VGdTe/WjicDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T19:31:09.527761Z"},"content_sha256":"0354e4c1fa868b4193ad41966c3275ddea244b14fcadf6c710f8c076114d8e78","schema_version":"1.0","event_id":"sha256:0354e4c1fa868b4193ad41966c3275ddea244b14fcadf6c710f8c076114d8e78"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:QHSE563DL2YCXY4NF5UC3RM67L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Personalized Hashtag Recommendation for Micro-videos","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IR"],"primary_cat":"cs.MM","authors_text":"Lei Zhu, Liqiang Nie, Xuzheng Yu, Yinwei Wei, Zhiyong Cheng, Zhou Zhao","submitted_at":"2019-08-27T02:14:52Z","abstract_excerpt":"Personalized hashtag recommendation methods aim to suggest users hashtags to annotate, categorize, and describe their posts. The hashtags, that a user provides to a post (e.g., a micro-video), are the ones which in her mind can well describe the post content where she is interested in. It means that we should consider both users' preferences on the post contents and their personal understanding on the hashtags. Most existing methods rely on modeling either the interactions between hashtags and posts or the interactions between users and hashtags for hashtag recommendation. These methods have n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.09987","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.09987/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":"2026-07-04T23:59:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Pq5bq0iN8/NZe5YTnZEKapmgxIyf9UGuXvGS6+ct9M/MmDBDaQKU+rEftsHMUV1zuXReoXdYgOxfG/33g4WZAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T19:31:09.530436Z"},"content_sha256":"7945758a4b05c6e299f532a001cca3340194903fbc8cd6d499647398900fa188","schema_version":"1.0","event_id":"sha256:7945758a4b05c6e299f532a001cca3340194903fbc8cd6d499647398900fa188"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QHSE563DL2YCXY4NF5UC3RM67L/bundle.json","state_url":"https://pith.science/pith/QHSE563DL2YCXY4NF5UC3RM67L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QHSE563DL2YCXY4NF5UC3RM67L/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":"2026-08-10T19:31:09Z","links":{"resolver":"https://pith.science/pith/QHSE563DL2YCXY4NF5UC3RM67L","bundle":"https://pith.science/pith/QHSE563DL2YCXY4NF5UC3RM67L/bundle.json","state":"https://pith.science/pith/QHSE563DL2YCXY4NF5UC3RM67L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QHSE563DL2YCXY4NF5UC3RM67L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:QHSE563DL2YCXY4NF5UC3RM67L","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":"37a29a5533fccc1f93adbfcae1ce01cae9dc8efb7827191a252753afa09ef91e","cross_cats_sorted":["cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2019-08-27T02:14:52Z","title_canon_sha256":"f5c30c5235411bae309c531baa89af992b7b5602ba2a3158aa98f206b7771b13"},"schema_version":"1.0","source":{"id":"1908.09987","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.09987","created_at":"2026-07-04T23:59:52Z"},{"alias_kind":"arxiv_version","alias_value":"1908.09987v1","created_at":"2026-07-04T23:59:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.09987","created_at":"2026-07-04T23:59:52Z"},{"alias_kind":"pith_short_12","alias_value":"QHSE563DL2YC","created_at":"2026-07-04T23:59:52Z"},{"alias_kind":"pith_short_16","alias_value":"QHSE563DL2YCXY4N","created_at":"2026-07-04T23:59:52Z"},{"alias_kind":"pith_short_8","alias_value":"QHSE563D","created_at":"2026-07-04T23:59:52Z"}],"graph_snapshots":[{"event_id":"sha256:7945758a4b05c6e299f532a001cca3340194903fbc8cd6d499647398900fa188","target":"graph","created_at":"2026-07-04T23:59:52Z","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/1908.09987/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Personalized hashtag recommendation methods aim to suggest users hashtags to annotate, categorize, and describe their posts. The hashtags, that a user provides to a post (e.g., a micro-video), are the ones which in her mind can well describe the post content where she is interested in. It means that we should consider both users' preferences on the post contents and their personal understanding on the hashtags. Most existing methods rely on modeling either the interactions between hashtags and posts or the interactions between users and hashtags for hashtag recommendation. These methods have n","authors_text":"Lei Zhu, Liqiang Nie, Xuzheng Yu, Yinwei Wei, Zhiyong Cheng, Zhou Zhao","cross_cats":["cs.IR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2019-08-27T02:14:52Z","title":"Personalized Hashtag Recommendation for Micro-videos"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.09987","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":"sha256:0354e4c1fa868b4193ad41966c3275ddea244b14fcadf6c710f8c076114d8e78","target":"record","created_at":"2026-07-04T23:59:52Z","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":"37a29a5533fccc1f93adbfcae1ce01cae9dc8efb7827191a252753afa09ef91e","cross_cats_sorted":["cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.MM","submitted_at":"2019-08-27T02:14:52Z","title_canon_sha256":"f5c30c5235411bae309c531baa89af992b7b5602ba2a3158aa98f206b7771b13"},"schema_version":"1.0","source":{"id":"1908.09987","kind":"arxiv","version":1}},"canonical_sha256":"81e44efb635eb02be38d2f682dc59efacf2bfd2ec8f7ebda18579f10ef6e3354","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"81e44efb635eb02be38d2f682dc59efacf2bfd2ec8f7ebda18579f10ef6e3354","first_computed_at":"2026-07-04T23:59:52.552894Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:59:52.552894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tHT3BF5uZ3ONrSsv6VujBSFbwCHfsSyK1KD2hx0mhhZ5ceNUcvQiRE1yOUlSLl3eKnRKvujjlbQAa0dlrCoJCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T23:59:52.553297Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.09987","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0354e4c1fa868b4193ad41966c3275ddea244b14fcadf6c710f8c076114d8e78","sha256:7945758a4b05c6e299f532a001cca3340194903fbc8cd6d499647398900fa188"],"state_sha256":"1648b825f009dc9bf20f9126dc6e18bcf9dc9eb29dc6ec8afef4707a1e75f359"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qZZlwZmfcfZy9ztciJ+MBgQYlz0mGBFLpVMwKmWIS1kLtD0NRxTLE3JzUk9WmIGuWuAEI18IDD67Qyohf6HjBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T19:31:09.543676Z","bundle_sha256":"9fc75e5ac31c7406357525ff7d72a17cc4dc8a09ed6b1ad5d8371351b1213b40"}}