{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:MATAJECLH6NDF3GGM2JAYGXRMV","short_pith_number":"pith:MATAJECL","schema_version":"1.0","canonical_sha256":"602604904b3f9a32ecc666920c1af1656a6e06cd460bac4231723d187832528c","source":{"kind":"arxiv","id":"1903.09846","version":1},"attestation_state":"computed","paper":{"title":"Toward the Evaluation of Written Proficiency on a Collaborative Social Network for Learning Languages: Yask","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CL"],"primary_cat":"cs.SI","authors_text":"Fabio N. Silva, George Due\\~nas, Sergio Jimenez","submitted_at":"2019-03-23T16:40:17Z","abstract_excerpt":"Yask is an online social collaborative network for practicing languages in a framework that includes requests, answers, and votes. Since measuring linguistic competence using current approaches is difficult, expensive and in many cases imprecise, we present a new alternative approach based on social networks. Our method, called Proficiency Rank, extends the well-known Page Rank algorithm to measure the reputation of users in a collaborative social graph. First, we extended Page Rank so that it not only considers positive links (votes) but also negative links. Second, in addition to using expli"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1903.09846","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-03-23T16:40:17Z","cross_cats_sorted":["cs.CL"],"title_canon_sha256":"519f7170eee2014a255594df09969b30d3c4386ebb895f5878b1f4036557e60f","abstract_canon_sha256":"8f6ee93965575ae9c95b31ffbb08c7b7db39a70824e35a173e32a0e069efbbb1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:35.338496Z","signature_b64":"KZcdKJGdLjOIqyy6xC4o/qzsvDVAg1EwzZxcCULmmAzyvQQVXFcCStflWDOLc2K+pzpyDJOEDnp9jHh9qOW2CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"602604904b3f9a32ecc666920c1af1656a6e06cd460bac4231723d187832528c","last_reissued_at":"2026-05-17T23:50:35.337909Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:35.337909Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Toward the Evaluation of Written Proficiency on a Collaborative Social Network for Learning Languages: Yask","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CL"],"primary_cat":"cs.SI","authors_text":"Fabio N. Silva, George Due\\~nas, Sergio Jimenez","submitted_at":"2019-03-23T16:40:17Z","abstract_excerpt":"Yask is an online social collaborative network for practicing languages in a framework that includes requests, answers, and votes. Since measuring linguistic competence using current approaches is difficult, expensive and in many cases imprecise, we present a new alternative approach based on social networks. Our method, called Proficiency Rank, extends the well-known Page Rank algorithm to measure the reputation of users in a collaborative social graph. First, we extended Page Rank so that it not only considers positive links (votes) but also negative links. Second, in addition to using expli"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.09846","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1903.09846","created_at":"2026-05-17T23:50:35.337995+00:00"},{"alias_kind":"arxiv_version","alias_value":"1903.09846v1","created_at":"2026-05-17T23:50:35.337995+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.09846","created_at":"2026-05-17T23:50:35.337995+00:00"},{"alias_kind":"pith_short_12","alias_value":"MATAJECLH6ND","created_at":"2026-05-18T12:33:21.387695+00:00"},{"alias_kind":"pith_short_16","alias_value":"MATAJECLH6NDF3GG","created_at":"2026-05-18T12:33:21.387695+00:00"},{"alias_kind":"pith_short_8","alias_value":"MATAJECL","created_at":"2026-05-18T12:33:21.387695+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/MATAJECLH6NDF3GGM2JAYGXRMV","json":"https://pith.science/pith/MATAJECLH6NDF3GGM2JAYGXRMV.json","graph_json":"https://pith.science/api/pith-number/MATAJECLH6NDF3GGM2JAYGXRMV/graph.json","events_json":"https://pith.science/api/pith-number/MATAJECLH6NDF3GGM2JAYGXRMV/events.json","paper":"https://pith.science/paper/MATAJECL"},"agent_actions":{"view_html":"https://pith.science/pith/MATAJECLH6NDF3GGM2JAYGXRMV","download_json":"https://pith.science/pith/MATAJECLH6NDF3GGM2JAYGXRMV.json","view_paper":"https://pith.science/paper/MATAJECL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1903.09846&json=true","fetch_graph":"https://pith.science/api/pith-number/MATAJECLH6NDF3GGM2JAYGXRMV/graph.json","fetch_events":"https://pith.science/api/pith-number/MATAJECLH6NDF3GGM2JAYGXRMV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MATAJECLH6NDF3GGM2JAYGXRMV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MATAJECLH6NDF3GGM2JAYGXRMV/action/storage_attestation","attest_author":"https://pith.science/pith/MATAJECLH6NDF3GGM2JAYGXRMV/action/author_attestation","sign_citation":"https://pith.science/pith/MATAJECLH6NDF3GGM2JAYGXRMV/action/citation_signature","submit_replication":"https://pith.science/pith/MATAJECLH6NDF3GGM2JAYGXRMV/action/replication_record"}},"created_at":"2026-05-17T23:50:35.337995+00:00","updated_at":"2026-05-17T23:50:35.337995+00:00"}