{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:MWSM53ZANBQM6D64JLU7QOGFNM","short_pith_number":"pith:MWSM53ZA","canonical_record":{"source":{"id":"2006.00525","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2020-05-31T13:56:07Z","cross_cats_sorted":["cs.CL","cs.SD"],"title_canon_sha256":"2a11ca94dfaaa0c20b416c983313cb6ea5d731ad926f479837920e9cb9f55f2d","abstract_canon_sha256":"52dbf63fc15ec96f139a38aba07bb2f763e21f895e918746558ed1bd614ba46f"},"schema_version":"1.0"},"canonical_sha256":"65a4ceef206860cf0fdc4ae9f838c56b2cd0d6b6be6083a96a4eae304b1c6203","source":{"kind":"arxiv","id":"2006.00525","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.00525","created_at":"2026-07-05T01:07:02Z"},{"alias_kind":"arxiv_version","alias_value":"2006.00525v1","created_at":"2026-07-05T01:07:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.00525","created_at":"2026-07-05T01:07:02Z"},{"alias_kind":"pith_short_12","alias_value":"MWSM53ZANBQM","created_at":"2026-07-05T01:07:02Z"},{"alias_kind":"pith_short_16","alias_value":"MWSM53ZANBQM6D64","created_at":"2026-07-05T01:07:02Z"},{"alias_kind":"pith_short_8","alias_value":"MWSM53ZA","created_at":"2026-07-05T01:07:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:MWSM53ZANBQM6D64JLU7QOGFNM","target":"record","payload":{"canonical_record":{"source":{"id":"2006.00525","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2020-05-31T13:56:07Z","cross_cats_sorted":["cs.CL","cs.SD"],"title_canon_sha256":"2a11ca94dfaaa0c20b416c983313cb6ea5d731ad926f479837920e9cb9f55f2d","abstract_canon_sha256":"52dbf63fc15ec96f139a38aba07bb2f763e21f895e918746558ed1bd614ba46f"},"schema_version":"1.0"},"canonical_sha256":"65a4ceef206860cf0fdc4ae9f838c56b2cd0d6b6be6083a96a4eae304b1c6203","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:07:02.706588Z","signature_b64":"215ZzXhxbhj689XBdClWdbUHw+qU6RgZre01zFOaEGg+3rSs201vPg/OS3WHoZOKx0aBs7S3HiYbXXFn+pruBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"65a4ceef206860cf0fdc4ae9f838c56b2cd0d6b6be6083a96a4eae304b1c6203","last_reissued_at":"2026-07-05T01:07:02.706174Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:07:02.706174Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.00525","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":"2026-07-05T01:07:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aph5gH9qz102RxOL+1OfudUVIbWbG3ikFoOhgJVmYrUzWo7rlu4Ek4ujcT3LEO3jq6NMPSz/P8CDklwaiOiADQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T22:51:57.609177Z"},"content_sha256":"e38008154d6678ee10be7328481f168b9205434cd32cbe6a3eda59eae97f1f7e","schema_version":"1.0","event_id":"sha256:e38008154d6678ee10be7328481f168b9205434cd32cbe6a3eda59eae97f1f7e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:MWSM53ZANBQM6D64JLU7QOGFNM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Residual Excitation Skewness for Automatic Speech Polarity Detection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CL","cs.SD"],"primary_cat":"eess.AS","authors_text":"Thomas Drugman","submitted_at":"2020-05-31T13:56:07Z","abstract_excerpt":"Detecting the correct speech polarity is a necessary step prior to several speech processing techniques. An error on its determination could have a dramatic detrimental impact on their performance. As current systems have to deal with increasing amounts of data stemming from multiple devices, the automatic detection of speech polarity has become a crucial problem. For this purpose, we here propose a very simple algorithm based on the skewness of two excitation signals. The method is shown on 10 speech corpora (8545 files) to lead to an error rate of only 0.06% in clean conditions and to clearl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.00525","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2006.00525/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:07:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SWLO+WNmLID1Fzwx0yB5K+ysqd6FeNg/QuuIOrp+vKrY8QBaE7FR54k6zwnIb1Wf19OOjWJEEqU1KTBD6SVsDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T22:51:57.610086Z"},"content_sha256":"18440e2980afa93ab3a938c1f88b112f5e5720da6003a3f0ac55fa144d12bc77","schema_version":"1.0","event_id":"sha256:18440e2980afa93ab3a938c1f88b112f5e5720da6003a3f0ac55fa144d12bc77"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MWSM53ZANBQM6D64JLU7QOGFNM/bundle.json","state_url":"https://pith.science/pith/MWSM53ZANBQM6D64JLU7QOGFNM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MWSM53ZANBQM6D64JLU7QOGFNM/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":"2026-08-03T22:51:57Z","links":{"resolver":"https://pith.science/pith/MWSM53ZANBQM6D64JLU7QOGFNM","bundle":"https://pith.science/pith/MWSM53ZANBQM6D64JLU7QOGFNM/bundle.json","state":"https://pith.science/pith/MWSM53ZANBQM6D64JLU7QOGFNM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MWSM53ZANBQM6D64JLU7QOGFNM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:MWSM53ZANBQM6D64JLU7QOGFNM","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":"52dbf63fc15ec96f139a38aba07bb2f763e21f895e918746558ed1bd614ba46f","cross_cats_sorted":["cs.CL","cs.SD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2020-05-31T13:56:07Z","title_canon_sha256":"2a11ca94dfaaa0c20b416c983313cb6ea5d731ad926f479837920e9cb9f55f2d"},"schema_version":"1.0","source":{"id":"2006.00525","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.00525","created_at":"2026-07-05T01:07:02Z"},{"alias_kind":"arxiv_version","alias_value":"2006.00525v1","created_at":"2026-07-05T01:07:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.00525","created_at":"2026-07-05T01:07:02Z"},{"alias_kind":"pith_short_12","alias_value":"MWSM53ZANBQM","created_at":"2026-07-05T01:07:02Z"},{"alias_kind":"pith_short_16","alias_value":"MWSM53ZANBQM6D64","created_at":"2026-07-05T01:07:02Z"},{"alias_kind":"pith_short_8","alias_value":"MWSM53ZA","created_at":"2026-07-05T01:07:02Z"}],"graph_snapshots":[{"event_id":"sha256:18440e2980afa93ab3a938c1f88b112f5e5720da6003a3f0ac55fa144d12bc77","target":"graph","created_at":"2026-07-05T01:07:02Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2006.00525/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Detecting the correct speech polarity is a necessary step prior to several speech processing techniques. An error on its determination could have a dramatic detrimental impact on their performance. As current systems have to deal with increasing amounts of data stemming from multiple devices, the automatic detection of speech polarity has become a crucial problem. For this purpose, we here propose a very simple algorithm based on the skewness of two excitation signals. The method is shown on 10 speech corpora (8545 files) to lead to an error rate of only 0.06% in clean conditions and to clearl","authors_text":"Thomas Drugman","cross_cats":["cs.CL","cs.SD"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2020-05-31T13:56:07Z","title":"Residual Excitation Skewness for Automatic Speech Polarity Detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.00525","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:e38008154d6678ee10be7328481f168b9205434cd32cbe6a3eda59eae97f1f7e","target":"record","created_at":"2026-07-05T01:07:02Z","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":"52dbf63fc15ec96f139a38aba07bb2f763e21f895e918746558ed1bd614ba46f","cross_cats_sorted":["cs.CL","cs.SD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2020-05-31T13:56:07Z","title_canon_sha256":"2a11ca94dfaaa0c20b416c983313cb6ea5d731ad926f479837920e9cb9f55f2d"},"schema_version":"1.0","source":{"id":"2006.00525","kind":"arxiv","version":1}},"canonical_sha256":"65a4ceef206860cf0fdc4ae9f838c56b2cd0d6b6be6083a96a4eae304b1c6203","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65a4ceef206860cf0fdc4ae9f838c56b2cd0d6b6be6083a96a4eae304b1c6203","first_computed_at":"2026-07-05T01:07:02.706174Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:07:02.706174Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"215ZzXhxbhj689XBdClWdbUHw+qU6RgZre01zFOaEGg+3rSs201vPg/OS3WHoZOKx0aBs7S3HiYbXXFn+pruBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:07:02.706588Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.00525","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e38008154d6678ee10be7328481f168b9205434cd32cbe6a3eda59eae97f1f7e","sha256:18440e2980afa93ab3a938c1f88b112f5e5720da6003a3f0ac55fa144d12bc77"],"state_sha256":"1be2197d14fd2ff760f8bdc6f1d8a31311cf25cff62e34d5ef7e28b0f12a3799"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kl0tyy+EX9S37qQ++JKcDR3TYH8B2kcsOIu3MlT23cJqw5xXZm5AGVgjtHDmj29CqC0syjW/SCOoV8Zoixb+CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T22:51:57.615568Z","bundle_sha256":"03b1e2e23cba83ca3c6df0a97ba613a5ece194cf32b66dcdddc14207e8341789"}}