{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:Q5QOFATSTZKMVSWB3N5VFOAAVD","short_pith_number":"pith:Q5QOFATS","canonical_record":{"source":{"id":"1306.2864","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2013-06-12T15:35:57Z","cross_cats_sorted":["cs.IR"],"title_canon_sha256":"722c9bea93eef68f085948da9dc1aa138d353ea62b88694afd9d216eda4e590d","abstract_canon_sha256":"a731dc1f7f71f099e94f13fad0c80c3322aeeb9df8d70f3d08ef171802076367"},"schema_version":"1.0"},"canonical_sha256":"8760e282729e54cacac1db7b52b800a8d8757d048bfa42197e5199316eec77fb","source":{"kind":"arxiv","id":"1306.2864","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.2864","created_at":"2026-05-18T03:21:09Z"},{"alias_kind":"arxiv_version","alias_value":"1306.2864v1","created_at":"2026-05-18T03:21:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.2864","created_at":"2026-05-18T03:21:09Z"},{"alias_kind":"pith_short_12","alias_value":"Q5QOFATSTZKM","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"Q5QOFATSTZKMVSWB","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"Q5QOFATS","created_at":"2026-05-18T12:27:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:Q5QOFATSTZKMVSWB3N5VFOAAVD","target":"record","payload":{"canonical_record":{"source":{"id":"1306.2864","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2013-06-12T15:35:57Z","cross_cats_sorted":["cs.IR"],"title_canon_sha256":"722c9bea93eef68f085948da9dc1aa138d353ea62b88694afd9d216eda4e590d","abstract_canon_sha256":"a731dc1f7f71f099e94f13fad0c80c3322aeeb9df8d70f3d08ef171802076367"},"schema_version":"1.0"},"canonical_sha256":"8760e282729e54cacac1db7b52b800a8d8757d048bfa42197e5199316eec77fb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:21:09.185151Z","signature_b64":"AbbY7nz3ybH83PVb3y6B0MatDyrngP8S826X0dsGk8mLVQIhXp8SqYbdoMAPfVn9HqI9KGWxeN0yuIJAdGoiCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8760e282729e54cacac1db7b52b800a8d8757d048bfa42197e5199316eec77fb","last_reissued_at":"2026-05-18T03:21:09.184555Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:21:09.184555Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1306.2864","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":"2026-05-18T03:21:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u6sZsledgZ1EQwZ21/unFrfm8JLjk/6h6E0YKlLsEIuSPvvod7QVPewYXeIP9lwMXa46yjJ9UOpUdQUxQOezDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T18:04:25.845767Z"},"content_sha256":"dd1f46887449206577b1d943a1a2eaebd59873c3f47b8bde0659360f58e97d3c","schema_version":"1.0","event_id":"sha256:dd1f46887449206577b1d943a1a2eaebd59873c3f47b8bde0659360f58e97d3c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:Q5QOFATSTZKMVSWB3N5VFOAAVD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Finding Academic Experts on a MultiSensor Approach using Shannon's Entropy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IR"],"primary_cat":"cs.AI","authors_text":"Andreas Wichert, Catarina Moreira","submitted_at":"2013-06-12T15:35:57Z","abstract_excerpt":"Expert finding is an information retrieval task concerned with the search for the most knowledgeable people, in some topic, with basis on documents describing peoples activities. The task involves taking a user query as input and returning a list of people sorted by their level of expertise regarding the user query. This paper introduces a novel approach for combining multiple estimators of expertise based on a multisensor data fusion framework together with the Dempster-Shafer theory of evidence and Shannon's entropy. More specifically, we defined three sensors which detect heterogeneous info"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.2864","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":"2026-05-18T03:21:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HuW+51O0eyTSIvAsTJcmzDmOgvfLyj7rBRhLMFTWA4Rm5xL1NVV2U1H9ohBDBqO5OXpqZIvmUfjDSv3BdMTCAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T18:04:25.846117Z"},"content_sha256":"16fc77ac0e2b135b51310d2e49afcfeaa06ef5d25e8e58f47f55d73196e2b0a7","schema_version":"1.0","event_id":"sha256:16fc77ac0e2b135b51310d2e49afcfeaa06ef5d25e8e58f47f55d73196e2b0a7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q5QOFATSTZKMVSWB3N5VFOAAVD/bundle.json","state_url":"https://pith.science/pith/Q5QOFATSTZKMVSWB3N5VFOAAVD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q5QOFATSTZKMVSWB3N5VFOAAVD/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":"2026-06-24T18:04:25Z","links":{"resolver":"https://pith.science/pith/Q5QOFATSTZKMVSWB3N5VFOAAVD","bundle":"https://pith.science/pith/Q5QOFATSTZKMVSWB3N5VFOAAVD/bundle.json","state":"https://pith.science/pith/Q5QOFATSTZKMVSWB3N5VFOAAVD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q5QOFATSTZKMVSWB3N5VFOAAVD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:Q5QOFATSTZKMVSWB3N5VFOAAVD","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":"a731dc1f7f71f099e94f13fad0c80c3322aeeb9df8d70f3d08ef171802076367","cross_cats_sorted":["cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2013-06-12T15:35:57Z","title_canon_sha256":"722c9bea93eef68f085948da9dc1aa138d353ea62b88694afd9d216eda4e590d"},"schema_version":"1.0","source":{"id":"1306.2864","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.2864","created_at":"2026-05-18T03:21:09Z"},{"alias_kind":"arxiv_version","alias_value":"1306.2864v1","created_at":"2026-05-18T03:21:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.2864","created_at":"2026-05-18T03:21:09Z"},{"alias_kind":"pith_short_12","alias_value":"Q5QOFATSTZKM","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"Q5QOFATSTZKMVSWB","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"Q5QOFATS","created_at":"2026-05-18T12:27:57Z"}],"graph_snapshots":[{"event_id":"sha256:16fc77ac0e2b135b51310d2e49afcfeaa06ef5d25e8e58f47f55d73196e2b0a7","target":"graph","created_at":"2026-05-18T03:21:09Z","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":"Expert finding is an information retrieval task concerned with the search for the most knowledgeable people, in some topic, with basis on documents describing peoples activities. The task involves taking a user query as input and returning a list of people sorted by their level of expertise regarding the user query. This paper introduces a novel approach for combining multiple estimators of expertise based on a multisensor data fusion framework together with the Dempster-Shafer theory of evidence and Shannon's entropy. More specifically, we defined three sensors which detect heterogeneous info","authors_text":"Andreas Wichert, Catarina Moreira","cross_cats":["cs.IR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2013-06-12T15:35:57Z","title":"Finding Academic Experts on a MultiSensor Approach using Shannon's Entropy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.2864","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:dd1f46887449206577b1d943a1a2eaebd59873c3f47b8bde0659360f58e97d3c","target":"record","created_at":"2026-05-18T03:21:09Z","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":"a731dc1f7f71f099e94f13fad0c80c3322aeeb9df8d70f3d08ef171802076367","cross_cats_sorted":["cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2013-06-12T15:35:57Z","title_canon_sha256":"722c9bea93eef68f085948da9dc1aa138d353ea62b88694afd9d216eda4e590d"},"schema_version":"1.0","source":{"id":"1306.2864","kind":"arxiv","version":1}},"canonical_sha256":"8760e282729e54cacac1db7b52b800a8d8757d048bfa42197e5199316eec77fb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8760e282729e54cacac1db7b52b800a8d8757d048bfa42197e5199316eec77fb","first_computed_at":"2026-05-18T03:21:09.184555Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:21:09.184555Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AbbY7nz3ybH83PVb3y6B0MatDyrngP8S826X0dsGk8mLVQIhXp8SqYbdoMAPfVn9HqI9KGWxeN0yuIJAdGoiCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:21:09.185151Z","signed_message":"canonical_sha256_bytes"},"source_id":"1306.2864","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd1f46887449206577b1d943a1a2eaebd59873c3f47b8bde0659360f58e97d3c","sha256:16fc77ac0e2b135b51310d2e49afcfeaa06ef5d25e8e58f47f55d73196e2b0a7"],"state_sha256":"7ea707b08708a24a0b9b934f7ac4c16934ada33945b4e3646c450a1660ea2d92"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T8EfNjPGWi8sukmDCS4HRVA9/3zkdtd17LBUihyJ1TdRK0+tjpElMSixU/yquX23CO3rb3S7/A122QZzOt0xBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T18:04:25.848102Z","bundle_sha256":"5ac36c176741d5dac37ff270d506b1b91063c2a958a794003a7e05a9cded4f74"}}