{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:YGPSDYY5QPYXSZWIBYC4W7DXLD","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":"681dde8df502e85658854e5e7afff617ef48f8c99d8807f7ab47225e1151931d","cross_cats_sorted":["cs.CY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2019-07-02T19:17:43Z","title_canon_sha256":"338ac36eae3613bfb77f3f36d6313c24f8384ca471ec5f31ed5f8bc1296153de"},"schema_version":"1.0","source":{"id":"1907.01591","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.01591","created_at":"2026-05-17T23:41:35Z"},{"alias_kind":"arxiv_version","alias_value":"1907.01591v1","created_at":"2026-05-17T23:41:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.01591","created_at":"2026-05-17T23:41:35Z"},{"alias_kind":"pith_short_12","alias_value":"YGPSDYY5QPYX","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"YGPSDYY5QPYXSZWI","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"YGPSDYY5","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:fcf3831c3d56f710d9b30533888833f4b1e2d1f0fe27858a8549dbd1373ecc21","target":"graph","created_at":"2026-05-17T23:41:35Z","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":"Collaborative filtering based algorithms, including Recurrent Neural Networks (RNN), tend towards predicting a perpetuation of past observed behavior. In a recommendation context, this can lead to an overly narrow set of suggestions lacking in serendipity and inadvertently placing the user in what is known as a \"filter bubble.\" In this paper, we grapple with the issue of the filter bubble in the context of a course recommendation system in production at a public university. Most universities in the United States encourage students to explore developing interests while simultaneously advising t","authors_text":"Weijie Jiang, Zachary A. Pardos","cross_cats":["cs.CY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2019-07-02T19:17:43Z","title":"Combating the Filter Bubble: Designing for Serendipity in a University Course Recommendation System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.01591","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":"sha256:5e0d0d1cccb8c6eb9fe6cb2ec19e2108df721f58507e32554384c85f374bcf23","target":"record","created_at":"2026-05-17T23:41:35Z","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":"681dde8df502e85658854e5e7afff617ef48f8c99d8807f7ab47225e1151931d","cross_cats_sorted":["cs.CY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2019-07-02T19:17:43Z","title_canon_sha256":"338ac36eae3613bfb77f3f36d6313c24f8384ca471ec5f31ed5f8bc1296153de"},"schema_version":"1.0","source":{"id":"1907.01591","kind":"arxiv","version":1}},"canonical_sha256":"c19f21e31d83f17966c80e05cb7c7758ecdc9e49302eca70c3068795cb994242","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c19f21e31d83f17966c80e05cb7c7758ecdc9e49302eca70c3068795cb994242","first_computed_at":"2026-05-17T23:41:35.845532Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:41:35.845532Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"274PMpDfDARtSEdArPl+YTLfNWS+B8RMPgi92F/E3indD2RGEU0iaeNHD0j+S/5tmWXQ+n9lHhVU5AYrp87WDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:41:35.846263Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.01591","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5e0d0d1cccb8c6eb9fe6cb2ec19e2108df721f58507e32554384c85f374bcf23","sha256:fcf3831c3d56f710d9b30533888833f4b1e2d1f0fe27858a8549dbd1373ecc21"],"state_sha256":"c9f1705fcca897fa69ea6fe3bce78fca1e50deb1906f243e2ee484e29f567eca"}