{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:WV4C6EMJFVCOG2WX522PXBLS5P","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":"a1e97b7f82685ec59f445a07ef8187af5b58172c7d8683329060b4fcdb12ed92","cross_cats_sorted":["q-bio.NC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2019-01-28T19:13:55Z","title_canon_sha256":"2f5be58f50228f61cf937c9294648168a572bd14c763682998e32ef879b7f699"},"schema_version":"1.0","source":{"id":"1901.09948","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.09948","created_at":"2026-05-17T23:47:07Z"},{"alias_kind":"arxiv_version","alias_value":"1901.09948v2","created_at":"2026-05-17T23:47:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.09948","created_at":"2026-05-17T23:47:07Z"},{"alias_kind":"pith_short_12","alias_value":"WV4C6EMJFVCO","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"WV4C6EMJFVCOG2WX","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"WV4C6EMJ","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:07f2ac316f15c9e9607332dc7ef15bf2ae74340cca6615ed16272aa8d8e831f7","target":"graph","created_at":"2026-05-17T23:47:07Z","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":"Spiking neural networks are nature's versatile solution to fault-tolerant and energy efficient signal processing. To translate these benefits into hardware, a growing number of neuromorphic spiking neural network processors attempt to emulate biological neural networks. These developments have created an imminent need for methods and tools to enable such systems to solve real-world signal processing problems. Like conventional neural networks, spiking neural networks can be trained on real, domain specific data. However, their training requires overcoming a number of challenges linked to their","authors_text":"Emre O. Neftci, Friedemann Zenke, Hesham Mostafa","cross_cats":["q-bio.NC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2019-01-28T19:13:55Z","title":"Surrogate Gradient Learning in Spiking Neural Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.09948","kind":"arxiv","version":2},"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:d71cc29c76f4872bbcb4bbed1b42db0f57c448651f6727040a5a188e80af908d","target":"record","created_at":"2026-05-17T23:47:07Z","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":"a1e97b7f82685ec59f445a07ef8187af5b58172c7d8683329060b4fcdb12ed92","cross_cats_sorted":["q-bio.NC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2019-01-28T19:13:55Z","title_canon_sha256":"2f5be58f50228f61cf937c9294648168a572bd14c763682998e32ef879b7f699"},"schema_version":"1.0","source":{"id":"1901.09948","kind":"arxiv","version":2}},"canonical_sha256":"b5782f11892d44e36ad7eeb4fb8572ebf1f7fa1d253a2303e41e16219ffbc8e2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b5782f11892d44e36ad7eeb4fb8572ebf1f7fa1d253a2303e41e16219ffbc8e2","first_computed_at":"2026-05-17T23:47:07.122749Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:47:07.122749Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ctN+QVfreb6trfQS0iTuU4CWLzZc/DCHOSHqyNn+dwD7n6GqWztajk9jlTUn0g4NutxSeJKpvt9KYrl2N8UwDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:47:07.123336Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.09948","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d71cc29c76f4872bbcb4bbed1b42db0f57c448651f6727040a5a188e80af908d","sha256:07f2ac316f15c9e9607332dc7ef15bf2ae74340cca6615ed16272aa8d8e831f7"],"state_sha256":"6b350f76101baf15d14894b4581e2a5ebfe59ae4ccba3366d155a24cf6c9f273"}