{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:MIUQA46JH7XKG2BEJREIGIYBI6","short_pith_number":"pith:MIUQA46J","canonical_record":{"source":{"id":"1811.05540","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-11-09T17:12:47Z","cross_cats_sorted":["cs.LG","cs.SD","eess.AS","stat.ML"],"title_canon_sha256":"18766d04dd383dca3b211a951a9398c1cd140b1bff73d60a6f2bc62a5ffa7bd2","abstract_canon_sha256":"37c7c40d4996a2883b868ead09426bc7e3bc6390a086dfe0d2859d277441eb2c"},"schema_version":"1.0"},"canonical_sha256":"62290073c93feea368244c48832301478ba9cc751236d7a08d0b5a36fd6fdac6","source":{"kind":"arxiv","id":"1811.05540","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.05540","created_at":"2026-05-18T00:00:42Z"},{"alias_kind":"arxiv_version","alias_value":"1811.05540v1","created_at":"2026-05-18T00:00:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.05540","created_at":"2026-05-18T00:00:42Z"},{"alias_kind":"pith_short_12","alias_value":"MIUQA46JH7XK","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"MIUQA46JH7XKG2BE","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"MIUQA46J","created_at":"2026-05-18T12:32:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:MIUQA46JH7XKG2BEJREIGIYBI6","target":"record","payload":{"canonical_record":{"source":{"id":"1811.05540","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-11-09T17:12:47Z","cross_cats_sorted":["cs.LG","cs.SD","eess.AS","stat.ML"],"title_canon_sha256":"18766d04dd383dca3b211a951a9398c1cd140b1bff73d60a6f2bc62a5ffa7bd2","abstract_canon_sha256":"37c7c40d4996a2883b868ead09426bc7e3bc6390a086dfe0d2859d277441eb2c"},"schema_version":"1.0"},"canonical_sha256":"62290073c93feea368244c48832301478ba9cc751236d7a08d0b5a36fd6fdac6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:42.692839Z","signature_b64":"w58tufQuFY75QzW23mT78uaLjfRuItJUij+ZTdalIBJB2pLudS1z793MJoB6u/gBven90kYgiJbW+exhdduuAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"62290073c93feea368244c48832301478ba9cc751236d7a08d0b5a36fd6fdac6","last_reissued_at":"2026-05-18T00:00:42.692427Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:42.692427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.05540","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":"2026-05-18T00:00:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QVItNE+Va0txMyXYMp21X5xwnqjckwggwXsbvWVtp9FlkqUvutsS8a2wlxVpIU9+6Q62hQnuq1InXE2a+4YEBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T07:22:49.132669Z"},"content_sha256":"17d5ed223c19a4c8f56b0a92c0024adb394b98bb8818ee9219b19f84657dd267","schema_version":"1.0","event_id":"sha256:17d5ed223c19a4c8f56b0a92c0024adb394b98bb8818ee9219b19f84657dd267"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:MIUQA46JH7XKG2BEJREIGIYBI6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Native Language Identification using i-vector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG","cs.SD","eess.AS","stat.ML"],"primary_cat":"cs.CL","authors_text":"Ahmed Nazim Uddin, Md Ashequr Rahman, Md. Rafidul Islam, Mohammad Ariful Haque","submitted_at":"2018-11-09T17:12:47Z","abstract_excerpt":"The task of determining a speaker's native language based only on his speeches in a second language is known as Native Language Identification or NLI. Due to its increasing applications in various domains of speech signal processing, this has emerged as an important research area in recent times. In this paper we have proposed an i-vector based approach to develop an automatic NLI system using MFCC and GFCC features. For evaluation of our approach, we have tested our framework on the 2016 ComParE Native language sub-challenge dataset which has English language speakers from 11 different native"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.05540","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":"2026-05-18T00:00:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uJz0PAb5oj6bzPIiv6BQf8H948tu9lknkQzXzHUF2xnlpoIKk21ewlKJBVio4xJM9IQFBqnR75nr+V2R4ADmBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T07:22:49.133017Z"},"content_sha256":"cea379e06ef4ef7fef7c96d6f62e4985bc59eadbdd9745d873d24e0814b61725","schema_version":"1.0","event_id":"sha256:cea379e06ef4ef7fef7c96d6f62e4985bc59eadbdd9745d873d24e0814b61725"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MIUQA46JH7XKG2BEJREIGIYBI6/bundle.json","state_url":"https://pith.science/pith/MIUQA46JH7XKG2BEJREIGIYBI6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MIUQA46JH7XKG2BEJREIGIYBI6/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":"2026-06-07T07:22:49Z","links":{"resolver":"https://pith.science/pith/MIUQA46JH7XKG2BEJREIGIYBI6","bundle":"https://pith.science/pith/MIUQA46JH7XKG2BEJREIGIYBI6/bundle.json","state":"https://pith.science/pith/MIUQA46JH7XKG2BEJREIGIYBI6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MIUQA46JH7XKG2BEJREIGIYBI6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:MIUQA46JH7XKG2BEJREIGIYBI6","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":"37c7c40d4996a2883b868ead09426bc7e3bc6390a086dfe0d2859d277441eb2c","cross_cats_sorted":["cs.LG","cs.SD","eess.AS","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-11-09T17:12:47Z","title_canon_sha256":"18766d04dd383dca3b211a951a9398c1cd140b1bff73d60a6f2bc62a5ffa7bd2"},"schema_version":"1.0","source":{"id":"1811.05540","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.05540","created_at":"2026-05-18T00:00:42Z"},{"alias_kind":"arxiv_version","alias_value":"1811.05540v1","created_at":"2026-05-18T00:00:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.05540","created_at":"2026-05-18T00:00:42Z"},{"alias_kind":"pith_short_12","alias_value":"MIUQA46JH7XK","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"MIUQA46JH7XKG2BE","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"MIUQA46J","created_at":"2026-05-18T12:32:37Z"}],"graph_snapshots":[{"event_id":"sha256:cea379e06ef4ef7fef7c96d6f62e4985bc59eadbdd9745d873d24e0814b61725","target":"graph","created_at":"2026-05-18T00:00:42Z","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":"The task of determining a speaker's native language based only on his speeches in a second language is known as Native Language Identification or NLI. Due to its increasing applications in various domains of speech signal processing, this has emerged as an important research area in recent times. In this paper we have proposed an i-vector based approach to develop an automatic NLI system using MFCC and GFCC features. For evaluation of our approach, we have tested our framework on the 2016 ComParE Native language sub-challenge dataset which has English language speakers from 11 different native","authors_text":"Ahmed Nazim Uddin, Md Ashequr Rahman, Md. Rafidul Islam, Mohammad Ariful Haque","cross_cats":["cs.LG","cs.SD","eess.AS","stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-11-09T17:12:47Z","title":"Native Language Identification using i-vector"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.05540","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":"sha256:17d5ed223c19a4c8f56b0a92c0024adb394b98bb8818ee9219b19f84657dd267","target":"record","created_at":"2026-05-18T00:00:42Z","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":"37c7c40d4996a2883b868ead09426bc7e3bc6390a086dfe0d2859d277441eb2c","cross_cats_sorted":["cs.LG","cs.SD","eess.AS","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2018-11-09T17:12:47Z","title_canon_sha256":"18766d04dd383dca3b211a951a9398c1cd140b1bff73d60a6f2bc62a5ffa7bd2"},"schema_version":"1.0","source":{"id":"1811.05540","kind":"arxiv","version":1}},"canonical_sha256":"62290073c93feea368244c48832301478ba9cc751236d7a08d0b5a36fd6fdac6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"62290073c93feea368244c48832301478ba9cc751236d7a08d0b5a36fd6fdac6","first_computed_at":"2026-05-18T00:00:42.692427Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:42.692427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w58tufQuFY75QzW23mT78uaLjfRuItJUij+ZTdalIBJB2pLudS1z793MJoB6u/gBven90kYgiJbW+exhdduuAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:42.692839Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.05540","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:17d5ed223c19a4c8f56b0a92c0024adb394b98bb8818ee9219b19f84657dd267","sha256:cea379e06ef4ef7fef7c96d6f62e4985bc59eadbdd9745d873d24e0814b61725"],"state_sha256":"b51a65741e88f0a9bdf66f7962a175db179049845edf067b11060a2b98972c37"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ouuQR/sQSG+HlpT2UjsHKKvjmR3Bh0YQ4wDPiAtZv7qCVmx2TBuxNxVY5uQlkTGR0cYCNDtg6pQq0ztTxASXDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T07:22:49.134935Z","bundle_sha256":"480161629cf2e193a428b14683144a075889f97d63f3e22ac1220ca9f633b7b9"}}