{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:Y73Q76KZWBSAS4V357FC25GQOI","short_pith_number":"pith:Y73Q76KZ","canonical_record":{"source":{"id":"2606.04289","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SI","submitted_at":"2026-06-02T23:36:12Z","cross_cats_sorted":[],"title_canon_sha256":"65a0d02178b9b65d061ed142bbe6437acc82b76456c7655651f4eb91fe5fceac","abstract_canon_sha256":"9892e91eee4dc1d324c494ad78e9c2b6546be580c916eb244f9d7d723a81e713"},"schema_version":"1.0"},"canonical_sha256":"c7f70ff959b0640972bbefca2d74d0720c6161053e2d6e630bc3d8e29c241c67","source":{"kind":"arxiv","id":"2606.04289","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.04289","created_at":"2026-06-04T01:09:02Z"},{"alias_kind":"arxiv_version","alias_value":"2606.04289v1","created_at":"2026-06-04T01:09:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.04289","created_at":"2026-06-04T01:09:02Z"},{"alias_kind":"pith_short_12","alias_value":"Y73Q76KZWBSA","created_at":"2026-06-04T01:09:02Z"},{"alias_kind":"pith_short_16","alias_value":"Y73Q76KZWBSAS4V3","created_at":"2026-06-04T01:09:02Z"},{"alias_kind":"pith_short_8","alias_value":"Y73Q76KZ","created_at":"2026-06-04T01:09:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:Y73Q76KZWBSAS4V357FC25GQOI","target":"record","payload":{"canonical_record":{"source":{"id":"2606.04289","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SI","submitted_at":"2026-06-02T23:36:12Z","cross_cats_sorted":[],"title_canon_sha256":"65a0d02178b9b65d061ed142bbe6437acc82b76456c7655651f4eb91fe5fceac","abstract_canon_sha256":"9892e91eee4dc1d324c494ad78e9c2b6546be580c916eb244f9d7d723a81e713"},"schema_version":"1.0"},"canonical_sha256":"c7f70ff959b0640972bbefca2d74d0720c6161053e2d6e630bc3d8e29c241c67","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-04T01:09:02.165556Z","signature_b64":"kxdE5IzdubIHVPo3vSL+nO96PgolSZQWsAM6XXknOm/s+PbZcmWtiUTWQWxgfNnpn8fvce7/m7DmRe8h3UABBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c7f70ff959b0640972bbefca2d74d0720c6161053e2d6e630bc3d8e29c241c67","last_reissued_at":"2026-06-04T01:09:02.165059Z","signature_status":"signed_v1","first_computed_at":"2026-06-04T01:09:02.165059Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.04289","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":"2026-06-04T01:09:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GhixxzZPOrtMg36wGVkR0Xi72a50LQ8PCN3rMVxdFACnpztyBHrvc0TEwinjiUcDO4Djr3FxnyOGs15OJvJtCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T03:26:58.479009Z"},"content_sha256":"e288930ff8126bd1e5fcc511d77361c6fa1ef25790d8fc707258f6f9b7e01c85","schema_version":"1.0","event_id":"sha256:e288930ff8126bd1e5fcc511d77361c6fa1ef25790d8fc707258f6f9b7e01c85"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:Y73Q76KZWBSAS4V357FC25GQOI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Characterizing Online Criticism of Partisan News Media Using Weakly Supervised Learning","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.SI","authors_text":"Aron Culotta, Karthik Shivaram, Matthew Shapiro, Mustafa Bilgic","submitted_at":"2026-06-02T23:36:12Z","abstract_excerpt":"We propose novel methods to identify tweets that criticize partisan news sources. Prior work suggests that criticism, ridicule, and distrust of news media all play important roles in hyperpartisanship, misinformation, and filter bubble formation. Thus, understanding the prevalence and temporal dynamics of media-targeted criticism can provide us with updated tools to assess the health of the information ecosystem. There is a scarcity of labeled data for this task, and we develop a weakly supervised learning approach that leverages multiple noisy labeling functions based on both the content of t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.04289","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/2606.04289/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":"2026-06-04T01:09:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pVhzSMLKhcVqd1VEv/s9JvwXYB4hKOKAmw8n2n24A8Z0hMlYm0NtKE6PKWGTPlbmZeUHaNR8tnciYPoGbfhFBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T03:26:58.479396Z"},"content_sha256":"4db09b7eadf8ea4580b6756f686de6af932aba87a11e2433422425f042fc2ee7","schema_version":"1.0","event_id":"sha256:4db09b7eadf8ea4580b6756f686de6af932aba87a11e2433422425f042fc2ee7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y73Q76KZWBSAS4V357FC25GQOI/bundle.json","state_url":"https://pith.science/pith/Y73Q76KZWBSAS4V357FC25GQOI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y73Q76KZWBSAS4V357FC25GQOI/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":"2026-06-27T03:26:58Z","links":{"resolver":"https://pith.science/pith/Y73Q76KZWBSAS4V357FC25GQOI","bundle":"https://pith.science/pith/Y73Q76KZWBSAS4V357FC25GQOI/bundle.json","state":"https://pith.science/pith/Y73Q76KZWBSAS4V357FC25GQOI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y73Q76KZWBSAS4V357FC25GQOI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:Y73Q76KZWBSAS4V357FC25GQOI","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":"9892e91eee4dc1d324c494ad78e9c2b6546be580c916eb244f9d7d723a81e713","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SI","submitted_at":"2026-06-02T23:36:12Z","title_canon_sha256":"65a0d02178b9b65d061ed142bbe6437acc82b76456c7655651f4eb91fe5fceac"},"schema_version":"1.0","source":{"id":"2606.04289","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.04289","created_at":"2026-06-04T01:09:02Z"},{"alias_kind":"arxiv_version","alias_value":"2606.04289v1","created_at":"2026-06-04T01:09:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.04289","created_at":"2026-06-04T01:09:02Z"},{"alias_kind":"pith_short_12","alias_value":"Y73Q76KZWBSA","created_at":"2026-06-04T01:09:02Z"},{"alias_kind":"pith_short_16","alias_value":"Y73Q76KZWBSAS4V3","created_at":"2026-06-04T01:09:02Z"},{"alias_kind":"pith_short_8","alias_value":"Y73Q76KZ","created_at":"2026-06-04T01:09:02Z"}],"graph_snapshots":[{"event_id":"sha256:4db09b7eadf8ea4580b6756f686de6af932aba87a11e2433422425f042fc2ee7","target":"graph","created_at":"2026-06-04T01:09:02Z","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/2606.04289/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose novel methods to identify tweets that criticize partisan news sources. Prior work suggests that criticism, ridicule, and distrust of news media all play important roles in hyperpartisanship, misinformation, and filter bubble formation. Thus, understanding the prevalence and temporal dynamics of media-targeted criticism can provide us with updated tools to assess the health of the information ecosystem. There is a scarcity of labeled data for this task, and we develop a weakly supervised learning approach that leverages multiple noisy labeling functions based on both the content of t","authors_text":"Aron Culotta, Karthik Shivaram, Matthew Shapiro, Mustafa Bilgic","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SI","submitted_at":"2026-06-02T23:36:12Z","title":"Characterizing Online Criticism of Partisan News Media Using Weakly Supervised Learning"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.04289","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:e288930ff8126bd1e5fcc511d77361c6fa1ef25790d8fc707258f6f9b7e01c85","target":"record","created_at":"2026-06-04T01:09:02Z","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":"9892e91eee4dc1d324c494ad78e9c2b6546be580c916eb244f9d7d723a81e713","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SI","submitted_at":"2026-06-02T23:36:12Z","title_canon_sha256":"65a0d02178b9b65d061ed142bbe6437acc82b76456c7655651f4eb91fe5fceac"},"schema_version":"1.0","source":{"id":"2606.04289","kind":"arxiv","version":1}},"canonical_sha256":"c7f70ff959b0640972bbefca2d74d0720c6161053e2d6e630bc3d8e29c241c67","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c7f70ff959b0640972bbefca2d74d0720c6161053e2d6e630bc3d8e29c241c67","first_computed_at":"2026-06-04T01:09:02.165059Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-04T01:09:02.165059Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kxdE5IzdubIHVPo3vSL+nO96PgolSZQWsAM6XXknOm/s+PbZcmWtiUTWQWxgfNnpn8fvce7/m7DmRe8h3UABBw==","signature_status":"signed_v1","signed_at":"2026-06-04T01:09:02.165556Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.04289","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e288930ff8126bd1e5fcc511d77361c6fa1ef25790d8fc707258f6f9b7e01c85","sha256:4db09b7eadf8ea4580b6756f686de6af932aba87a11e2433422425f042fc2ee7"],"state_sha256":"38999b4081869845d095860de3f8bf5552fa4e0e2862baa8521df4f7e27ec453"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FbpvUGyd5cottkcQ4J3wTdjs4/0+6Qv+ufqG3zzG7GQ6po0WLQhsD1XIkDNqkO45cmYtdI3CuJ8xuRB9rZXxCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T03:26:58.481310Z","bundle_sha256":"353d16f8286652f625275e9d0e36cf707f9bbc2891312f0f6a24cec9e640dab3"}}