{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:6L6JE7AZKIACQDK5SBGUF7U3OP","short_pith_number":"pith:6L6JE7AZ","canonical_record":{"source":{"id":"1704.07757","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2017-04-25T16:01:50Z","cross_cats_sorted":[],"title_canon_sha256":"9215d7f8e71aa96f12e40042f51dedea29c8f1608c818e1a123522b4720209ac","abstract_canon_sha256":"031fedd8cc6e6de7e089ff3f8d39f8f4e3ef368c3c60d2bfd8d50399c9234b78"},"schema_version":"1.0"},"canonical_sha256":"f2fc927c195200280d5d904d42fe9b73c0a6ae2347e18707f4cf8c44f2a6f1d0","source":{"kind":"arxiv","id":"1704.07757","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.07757","created_at":"2026-05-18T00:45:37Z"},{"alias_kind":"arxiv_version","alias_value":"1704.07757v1","created_at":"2026-05-18T00:45:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.07757","created_at":"2026-05-18T00:45:37Z"},{"alias_kind":"pith_short_12","alias_value":"6L6JE7AZKIAC","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6L6JE7AZKIACQDK5","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6L6JE7AZ","created_at":"2026-05-18T12:31:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:6L6JE7AZKIACQDK5SBGUF7U3OP","target":"record","payload":{"canonical_record":{"source":{"id":"1704.07757","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2017-04-25T16:01:50Z","cross_cats_sorted":[],"title_canon_sha256":"9215d7f8e71aa96f12e40042f51dedea29c8f1608c818e1a123522b4720209ac","abstract_canon_sha256":"031fedd8cc6e6de7e089ff3f8d39f8f4e3ef368c3c60d2bfd8d50399c9234b78"},"schema_version":"1.0"},"canonical_sha256":"f2fc927c195200280d5d904d42fe9b73c0a6ae2347e18707f4cf8c44f2a6f1d0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:45:37.023621Z","signature_b64":"TtFiPFKDRw8mwUCo0PtLkkGzLX+YcIDkoFIncsIhFVzvJ4hN/AMwyuG/9enyixeTKENYIE/lqsmBrBlopbxFCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f2fc927c195200280d5d904d42fe9b73c0a6ae2347e18707f4cf8c44f2a6f1d0","last_reissued_at":"2026-05-18T00:45:37.022527Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:45:37.022527Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.07757","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":"2026-05-18T00:45:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+6UiidryYNle5NNa+AS73ySGYjH9SmWNL+WvpvLEsXYthv9evn2G8K1lF8fmwBeu00TivjqpBstpVnbC9MKlDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T06:03:32.983284Z"},"content_sha256":"ffad94849f8a431b208e4390b42acc01c5860c42aec642c676400fcd564352bf","schema_version":"1.0","event_id":"sha256:ffad94849f8a431b208e4390b42acc01c5860c42aec642c676400fcd564352bf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:6L6JE7AZKIACQDK5SBGUF7U3OP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"User Profile Based Research Paper Recommendation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.IR","authors_text":"Harshita Sahijwani, Sourish Dasgupta","submitted_at":"2017-04-25T16:01:50Z","abstract_excerpt":"We design a recommender system for research papers based on topic-modeling. The users feedback to the results is used to make the results more relevant the next time they fire a query. The user's needs are understood by observing the change in the themes that the user shows a preference for over time."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.07757","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":"2026-05-18T00:45:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2OyWyBO8b/x8KgIcnVl5r3+/r4OD4NjP80qq6nI2mbXQqsk9BgkkXItRl4+KFfkn2suT0FGJxknZc/+/m7eTAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T06:03:32.984030Z"},"content_sha256":"623fb1e033904965de1fe7118e247afd3fea180ab09664e64125c412bfaf6c2b","schema_version":"1.0","event_id":"sha256:623fb1e033904965de1fe7118e247afd3fea180ab09664e64125c412bfaf6c2b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6L6JE7AZKIACQDK5SBGUF7U3OP/bundle.json","state_url":"https://pith.science/pith/6L6JE7AZKIACQDK5SBGUF7U3OP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6L6JE7AZKIACQDK5SBGUF7U3OP/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":"2026-06-06T06:03:32Z","links":{"resolver":"https://pith.science/pith/6L6JE7AZKIACQDK5SBGUF7U3OP","bundle":"https://pith.science/pith/6L6JE7AZKIACQDK5SBGUF7U3OP/bundle.json","state":"https://pith.science/pith/6L6JE7AZKIACQDK5SBGUF7U3OP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6L6JE7AZKIACQDK5SBGUF7U3OP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:6L6JE7AZKIACQDK5SBGUF7U3OP","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":"031fedd8cc6e6de7e089ff3f8d39f8f4e3ef368c3c60d2bfd8d50399c9234b78","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2017-04-25T16:01:50Z","title_canon_sha256":"9215d7f8e71aa96f12e40042f51dedea29c8f1608c818e1a123522b4720209ac"},"schema_version":"1.0","source":{"id":"1704.07757","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.07757","created_at":"2026-05-18T00:45:37Z"},{"alias_kind":"arxiv_version","alias_value":"1704.07757v1","created_at":"2026-05-18T00:45:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.07757","created_at":"2026-05-18T00:45:37Z"},{"alias_kind":"pith_short_12","alias_value":"6L6JE7AZKIAC","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6L6JE7AZKIACQDK5","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6L6JE7AZ","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:623fb1e033904965de1fe7118e247afd3fea180ab09664e64125c412bfaf6c2b","target":"graph","created_at":"2026-05-18T00:45:37Z","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 design a recommender system for research papers based on topic-modeling. The users feedback to the results is used to make the results more relevant the next time they fire a query. The user's needs are understood by observing the change in the themes that the user shows a preference for over time.","authors_text":"Harshita Sahijwani, Sourish Dasgupta","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2017-04-25T16:01:50Z","title":"User Profile Based Research Paper Recommendation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.07757","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:ffad94849f8a431b208e4390b42acc01c5860c42aec642c676400fcd564352bf","target":"record","created_at":"2026-05-18T00:45:37Z","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":"031fedd8cc6e6de7e089ff3f8d39f8f4e3ef368c3c60d2bfd8d50399c9234b78","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2017-04-25T16:01:50Z","title_canon_sha256":"9215d7f8e71aa96f12e40042f51dedea29c8f1608c818e1a123522b4720209ac"},"schema_version":"1.0","source":{"id":"1704.07757","kind":"arxiv","version":1}},"canonical_sha256":"f2fc927c195200280d5d904d42fe9b73c0a6ae2347e18707f4cf8c44f2a6f1d0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f2fc927c195200280d5d904d42fe9b73c0a6ae2347e18707f4cf8c44f2a6f1d0","first_computed_at":"2026-05-18T00:45:37.022527Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:45:37.022527Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TtFiPFKDRw8mwUCo0PtLkkGzLX+YcIDkoFIncsIhFVzvJ4hN/AMwyuG/9enyixeTKENYIE/lqsmBrBlopbxFCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:45:37.023621Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.07757","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ffad94849f8a431b208e4390b42acc01c5860c42aec642c676400fcd564352bf","sha256:623fb1e033904965de1fe7118e247afd3fea180ab09664e64125c412bfaf6c2b"],"state_sha256":"4d7d8d944c941d27b2caedd183b5ffd6f2163081944831070622085130dd1ef1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MupNieNT2aLLySV62XaMWqylI2ADYVWGEx8w/Q3MAQ6E4JchDjyO/qYT8Y9HzsHwZIr8ucEcQriMz+UIMmzEBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T06:03:32.988553Z","bundle_sha256":"ce45f1d157b20218de2f66e4f0c8111623f2c7082261bdeae6b3705028847bb9"}}