{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:TW4ZVCRF4XA5DDBG3DXYAZZYA3","short_pith_number":"pith:TW4ZVCRF","canonical_record":{"source":{"id":"2605.17598","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-17T18:50:50Z","cross_cats_sorted":[],"title_canon_sha256":"271664b7b62d470f27b0876a091cf036e999321b9449a8503d88e463d76dedb2","abstract_canon_sha256":"46b6860b96247755a0e4647de2923971851fba29aca9b41f9607c1dea1db7682"},"schema_version":"1.0"},"canonical_sha256":"9db99a8a25e5c1d18c26d8ef80673806f11023c6399251bdeeaac18bdc27f7e4","source":{"kind":"arxiv","id":"2605.17598","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.17598","created_at":"2026-05-20T00:04:47Z"},{"alias_kind":"arxiv_version","alias_value":"2605.17598v1","created_at":"2026-05-20T00:04:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.17598","created_at":"2026-05-20T00:04:47Z"},{"alias_kind":"pith_short_12","alias_value":"TW4ZVCRF4XA5","created_at":"2026-05-20T00:04:47Z"},{"alias_kind":"pith_short_16","alias_value":"TW4ZVCRF4XA5DDBG","created_at":"2026-05-20T00:04:47Z"},{"alias_kind":"pith_short_8","alias_value":"TW4ZVCRF","created_at":"2026-05-20T00:04:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:TW4ZVCRF4XA5DDBG3DXYAZZYA3","target":"record","payload":{"canonical_record":{"source":{"id":"2605.17598","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-17T18:50:50Z","cross_cats_sorted":[],"title_canon_sha256":"271664b7b62d470f27b0876a091cf036e999321b9449a8503d88e463d76dedb2","abstract_canon_sha256":"46b6860b96247755a0e4647de2923971851fba29aca9b41f9607c1dea1db7682"},"schema_version":"1.0"},"canonical_sha256":"9db99a8a25e5c1d18c26d8ef80673806f11023c6399251bdeeaac18bdc27f7e4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T00:04:47.877731Z","signature_b64":"d5lkyzqEv6/nhjH6bLSBxejMdttWfPjIIsrvTmMO5N6W8YrG3Yi7bK8sQu2F94yrJypn/x94s4qyMlyGgtxCBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9db99a8a25e5c1d18c26d8ef80673806f11023c6399251bdeeaac18bdc27f7e4","last_reissued_at":"2026-05-20T00:04:47.876922Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T00:04:47.876922Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.17598","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":"2026-05-20T00:04:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HQpEy1cA5F/c4rCnud/EqrgGvPaPAIVi3yDm37hNKxDJyDE2ZNDZeWyZmWLnQDctsD8YLPI93v6zoRB4fzNOCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T14:00:02.619214Z"},"content_sha256":"04d7cb7b30faf025e049c324fc8f774cae2313010b54b6f9b7b94f719065d71e","schema_version":"1.0","event_id":"sha256:04d7cb7b30faf025e049c324fc8f774cae2313010b54b6f9b7b94f719065d71e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:TW4ZVCRF4XA5DDBG3DXYAZZYA3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mixture of Experts for Low-Resource LLMs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Dan Revital, Noam Kayzer, Ori Bar Joseph, Sarel Weinberger, Smadar Arvatz","submitted_at":"2026-05-17T18:50:50Z","abstract_excerpt":"Mixture-of-Experts (MoE) architectures enable efficient model scaling, yet expert routing behavior across underrepresented languages remains poorly understood. We analyze routing dynamics in two architecturally distinct MoE models -- a pure Transformer (Qwen3-30B-A3B) and a hybrid Mamba-Transformer (Nemotron-3-Nano-30B-A3B) -- using Hebrew as a morphologically rich, low-resource testbed. Both pre-trained models exhibit \\emph{deep-layer routing collapse}: usage entropy drops sharply in final layers and tokens concentrate on a narrow expert subset, a pattern largely absent for English. Continual"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.17598","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/2605.17598/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-19T21:33:23.577038Z","status":"skipped","version":"1.0.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-19T21:21:57.506697Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"0617b1901077e47e2e23df02845a6b6aff49283c0dce4899960ea97b3059ad5e"},"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":"2026-05-20T00:04:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gQxsQwRPS6bH14FF2S8e8t7mIr6x9bTvi352qBvj6ia6MzRdURLBRHJsFwcUnAzqR4Iwv6aqQqD/b64ejjhFCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T14:00:02.619744Z"},"content_sha256":"1b432e59948bf224259304314ad87749a6fee0557f6878a5c029645183f99667","schema_version":"1.0","event_id":"sha256:1b432e59948bf224259304314ad87749a6fee0557f6878a5c029645183f99667"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TW4ZVCRF4XA5DDBG3DXYAZZYA3/bundle.json","state_url":"https://pith.science/pith/TW4ZVCRF4XA5DDBG3DXYAZZYA3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TW4ZVCRF4XA5DDBG3DXYAZZYA3/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":"2026-05-22T14:00:02Z","links":{"resolver":"https://pith.science/pith/TW4ZVCRF4XA5DDBG3DXYAZZYA3","bundle":"https://pith.science/pith/TW4ZVCRF4XA5DDBG3DXYAZZYA3/bundle.json","state":"https://pith.science/pith/TW4ZVCRF4XA5DDBG3DXYAZZYA3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TW4ZVCRF4XA5DDBG3DXYAZZYA3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:TW4ZVCRF4XA5DDBG3DXYAZZYA3","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":"46b6860b96247755a0e4647de2923971851fba29aca9b41f9607c1dea1db7682","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-17T18:50:50Z","title_canon_sha256":"271664b7b62d470f27b0876a091cf036e999321b9449a8503d88e463d76dedb2"},"schema_version":"1.0","source":{"id":"2605.17598","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.17598","created_at":"2026-05-20T00:04:47Z"},{"alias_kind":"arxiv_version","alias_value":"2605.17598v1","created_at":"2026-05-20T00:04:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.17598","created_at":"2026-05-20T00:04:47Z"},{"alias_kind":"pith_short_12","alias_value":"TW4ZVCRF4XA5","created_at":"2026-05-20T00:04:47Z"},{"alias_kind":"pith_short_16","alias_value":"TW4ZVCRF4XA5DDBG","created_at":"2026-05-20T00:04:47Z"},{"alias_kind":"pith_short_8","alias_value":"TW4ZVCRF","created_at":"2026-05-20T00:04:47Z"}],"graph_snapshots":[{"event_id":"sha256:1b432e59948bf224259304314ad87749a6fee0557f6878a5c029645183f99667","target":"graph","created_at":"2026-05-20T00:04:47Z","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":[{"findings_count":0,"name":"ai_meta_artifact","ran_at":"2026-05-19T21:33:23.577038Z","status":"skipped","version":"1.0.0"},{"findings_count":0,"name":"claim_evidence","ran_at":"2026-05-19T21:21:57.506697Z","status":"completed","version":"1.0.0"}],"endpoint":"/pith/2605.17598/integrity.json","findings":[],"snapshot_sha256":"0617b1901077e47e2e23df02845a6b6aff49283c0dce4899960ea97b3059ad5e","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Mixture-of-Experts (MoE) architectures enable efficient model scaling, yet expert routing behavior across underrepresented languages remains poorly understood. We analyze routing dynamics in two architecturally distinct MoE models -- a pure Transformer (Qwen3-30B-A3B) and a hybrid Mamba-Transformer (Nemotron-3-Nano-30B-A3B) -- using Hebrew as a morphologically rich, low-resource testbed. Both pre-trained models exhibit \\emph{deep-layer routing collapse}: usage entropy drops sharply in final layers and tokens concentrate on a narrow expert subset, a pattern largely absent for English. Continual","authors_text":"Dan Revital, Noam Kayzer, Ori Bar Joseph, Sarel Weinberger, Smadar Arvatz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-17T18:50:50Z","title":"Mixture of Experts for Low-Resource LLMs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.17598","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":"sha256:04d7cb7b30faf025e049c324fc8f774cae2313010b54b6f9b7b94f719065d71e","target":"record","created_at":"2026-05-20T00:04:47Z","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":"46b6860b96247755a0e4647de2923971851fba29aca9b41f9607c1dea1db7682","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-17T18:50:50Z","title_canon_sha256":"271664b7b62d470f27b0876a091cf036e999321b9449a8503d88e463d76dedb2"},"schema_version":"1.0","source":{"id":"2605.17598","kind":"arxiv","version":1}},"canonical_sha256":"9db99a8a25e5c1d18c26d8ef80673806f11023c6399251bdeeaac18bdc27f7e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9db99a8a25e5c1d18c26d8ef80673806f11023c6399251bdeeaac18bdc27f7e4","first_computed_at":"2026-05-20T00:04:47.876922Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:04:47.876922Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d5lkyzqEv6/nhjH6bLSBxejMdttWfPjIIsrvTmMO5N6W8YrG3Yi7bK8sQu2F94yrJypn/x94s4qyMlyGgtxCBQ==","signature_status":"signed_v1","signed_at":"2026-05-20T00:04:47.877731Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.17598","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:04d7cb7b30faf025e049c324fc8f774cae2313010b54b6f9b7b94f719065d71e","sha256:1b432e59948bf224259304314ad87749a6fee0557f6878a5c029645183f99667"],"state_sha256":"e1ad5ea7387c6df8a07b343a5cfc8106d92decc713f0dead9ff5181167723d30"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"umR+/fZD0kCd3X3K+GzDeBZg6SzhhmuJIYe6G9j5SQyQDGgzKdxrR1+4nx6NZxhWUd4Q3O9ixLjXqWbq5H2zBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T14:00:02.622464Z","bundle_sha256":"76ee3ee96fc5dac09417ae3a84953f52ccf950d953ac4d5dd1254db43e0fa53f"}}