{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:PURZB4GB35BS73QEMO52TNQLNE","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":"0ee5863c1e1221cb8d8c6e367b9254739b3d8f51264f79d1dfa110e521c86518","cross_cats_sorted":["cs.AR","cs.LG","cs.PF","cs.SD"],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cs.HC","submitted_at":"2025-06-10T15:38:21Z","title_canon_sha256":"6e42517960f1db0eb465fa574c95b7e65d570b9589c4540c31cd033a03edb39d"},"schema_version":"1.0","source":{"id":"2506.08911","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.08911","created_at":"2026-07-05T11:24:53Z"},{"alias_kind":"arxiv_version","alias_value":"2506.08911v1","created_at":"2026-07-05T11:24:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.08911","created_at":"2026-07-05T11:24:53Z"},{"alias_kind":"pith_short_12","alias_value":"PURZB4GB35BS","created_at":"2026-07-05T11:24:53Z"},{"alias_kind":"pith_short_16","alias_value":"PURZB4GB35BS73QE","created_at":"2026-07-05T11:24:53Z"},{"alias_kind":"pith_short_8","alias_value":"PURZB4GB","created_at":"2026-07-05T11:24:53Z"}],"graph_snapshots":[{"event_id":"sha256:118364cc2d8b460778ad026fe56fffb4d01c686d9d1914d665671b422ed35cf9","target":"graph","created_at":"2026-07-05T11:24:53Z","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/2506.08911/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper presents a keyword spotting (KWS) system implemented on the NXP MCXN947 microcontroller with an integrated Neural Processing Unit (NPU), enabling real-time voice interaction on resource-constrained devices. The system combines MFCC feature extraction with a CNN classifier, optimized using Quantization Aware Training to reduce model size with minimal accuracy drop. Experimental results demonstrate a 59x speedup in inference time when leveraging the NPU compared to CPU-only execution, achieving 97.06% accuracy with a model size of 30.58 KB, demonstrating the feasibility of efficient, ","authors_text":"Hrvoje D\\v{z}apo, Petar Jaku\\v{s}","cross_cats":["cs.AR","cs.LG","cs.PF","cs.SD"],"headline":"","license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cs.HC","submitted_at":"2025-06-10T15:38:21Z","title":"Implementing Keyword Spotting on the MCUX947 Microcontroller with Integrated NPU"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.08911","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":"sha256:291fb140c1e8d526531c105b9f272e18f3253db635b9714c72c74a974294a2a7","target":"record","created_at":"2026-07-05T11:24:53Z","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":"0ee5863c1e1221cb8d8c6e367b9254739b3d8f51264f79d1dfa110e521c86518","cross_cats_sorted":["cs.AR","cs.LG","cs.PF","cs.SD"],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cs.HC","submitted_at":"2025-06-10T15:38:21Z","title_canon_sha256":"6e42517960f1db0eb465fa574c95b7e65d570b9589c4540c31cd033a03edb39d"},"schema_version":"1.0","source":{"id":"2506.08911","kind":"arxiv","version":1}},"canonical_sha256":"7d2390f0c1df432fee0463bba9b60b6905b8423cfd7988b9002d01662a58d92b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d2390f0c1df432fee0463bba9b60b6905b8423cfd7988b9002d01662a58d92b","first_computed_at":"2026-07-05T11:24:53.439337Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:24:53.439337Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xoWyf+PfKxfxLn7qH6NfDFlhQ4huF4Q2NlQKkKXCyvkzlIYblyayDAmRUFZk+WMO4KCc3XXcAH5w8NQoDMA3BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:24:53.439838Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.08911","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:291fb140c1e8d526531c105b9f272e18f3253db635b9714c72c74a974294a2a7","sha256:118364cc2d8b460778ad026fe56fffb4d01c686d9d1914d665671b422ed35cf9"],"state_sha256":"d420144570b2ac0f9fead6c2dd1a334e64c4e3f653a50c741c44b72137a2ffdd"}