{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:ZDNS2JXREQSB3M3VCGETKH7CIX","short_pith_number":"pith:ZDNS2JXR","canonical_record":{"source":{"id":"0708.4273","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-08-31T08:46:43Z","cross_cats_sorted":[],"title_canon_sha256":"db056bd16502eb13e33dcb58dd6b73afa0c44f2b674695e4023aa35c6ddeebfc","abstract_canon_sha256":"7cc3260c44fa9bcbd7732464f46753b9094812a442fc6c9bac19af4af242fddb"},"schema_version":"1.0"},"canonical_sha256":"c8db2d26f124241db3751189351fe245f4b3271726424d77ed9cbdb96df28f2b","source":{"kind":"arxiv","id":"0708.4273","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0708.4273","created_at":"2026-07-04T15:52:59Z"},{"alias_kind":"arxiv_version","alias_value":"0708.4273v1","created_at":"2026-07-04T15:52:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0708.4273","created_at":"2026-07-04T15:52:59Z"},{"alias_kind":"pith_short_12","alias_value":"ZDNS2JXREQSB","created_at":"2026-07-04T15:52:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZDNS2JXREQSB3M3V","created_at":"2026-07-04T15:52:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZDNS2JXR","created_at":"2026-07-04T15:52:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:ZDNS2JXREQSB3M3VCGETKH7CIX","target":"record","payload":{"canonical_record":{"source":{"id":"0708.4273","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-08-31T08:46:43Z","cross_cats_sorted":[],"title_canon_sha256":"db056bd16502eb13e33dcb58dd6b73afa0c44f2b674695e4023aa35c6ddeebfc","abstract_canon_sha256":"7cc3260c44fa9bcbd7732464f46753b9094812a442fc6c9bac19af4af242fddb"},"schema_version":"1.0"},"canonical_sha256":"c8db2d26f124241db3751189351fe245f4b3271726424d77ed9cbdb96df28f2b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:52:59.136463Z","signature_b64":"CaHp3LWi1YNFi1UHM7vL03f4fUyZyQFeOHKd9mNxk6dLNKx0U9ELac5NnGi3gxar9jxliU/JwzdOxcSqf3NhAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c8db2d26f124241db3751189351fe245f4b3271726424d77ed9cbdb96df28f2b","last_reissued_at":"2026-07-04T15:52:59.136086Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:52:59.136086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0708.4273","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":"2026-07-04T15:52:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UE7f7eRimZl+N8bnOuJaAljkJqr0Z6iCwexT6HX1VYZxrPauhznzbuz4NEwxBgVmDsmnDFDR8lzNfIa3G5cxCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T17:06:14.192789Z"},"content_sha256":"97be455295da91b0408df3725f5f88717997f8daed8c573f38d161aef676e942","schema_version":"1.0","event_id":"sha256:97be455295da91b0408df3725f5f88717997f8daed8c573f38d161aef676e942"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:ZDNS2JXREQSB3M3VCGETKH7CIX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Decision table for classifying point sources based on FIRST and 2MASS databases","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"D. Gao, Y. Zhang, Y. Zhao","submitted_at":"2007-08-31T08:46:43Z","abstract_excerpt":"With the availability of multiwavelength, multiscale and multiepoch astronomical catalogues, the number of features to describe astronomical objects has increases. The better features we select to classify objects, the higher the classification accuracy is. In this paper, we have used data sets of stars and quasars from near infrared band and radio band. Then best-first search method was applied to select features. For the data with selected features, the algorithm of decision table was implemented. The classification accuracy is more than 95.9%. As a result, the feature selection method impro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0708.4273","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/0708.4273/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":"2026-07-04T15:52:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/6SIIc/DulCaReMqXdm1FQrvF+JhpPaQlXwY6FwxJ4C6neefR+HGexDkKO/D6SqsIEQvVM7aLwAggo3iMFoWDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T17:06:14.193400Z"},"content_sha256":"2298994191c0bb410d6000a4be4095fbf4e8a3356d899cdc8c4bf890ac860090","schema_version":"1.0","event_id":"sha256:2298994191c0bb410d6000a4be4095fbf4e8a3356d899cdc8c4bf890ac860090"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZDNS2JXREQSB3M3VCGETKH7CIX/bundle.json","state_url":"https://pith.science/pith/ZDNS2JXREQSB3M3VCGETKH7CIX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZDNS2JXREQSB3M3VCGETKH7CIX/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":"2026-08-10T17:06:14Z","links":{"resolver":"https://pith.science/pith/ZDNS2JXREQSB3M3VCGETKH7CIX","bundle":"https://pith.science/pith/ZDNS2JXREQSB3M3VCGETKH7CIX/bundle.json","state":"https://pith.science/pith/ZDNS2JXREQSB3M3VCGETKH7CIX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZDNS2JXREQSB3M3VCGETKH7CIX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:ZDNS2JXREQSB3M3VCGETKH7CIX","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":"7cc3260c44fa9bcbd7732464f46753b9094812a442fc6c9bac19af4af242fddb","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-08-31T08:46:43Z","title_canon_sha256":"db056bd16502eb13e33dcb58dd6b73afa0c44f2b674695e4023aa35c6ddeebfc"},"schema_version":"1.0","source":{"id":"0708.4273","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0708.4273","created_at":"2026-07-04T15:52:59Z"},{"alias_kind":"arxiv_version","alias_value":"0708.4273v1","created_at":"2026-07-04T15:52:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0708.4273","created_at":"2026-07-04T15:52:59Z"},{"alias_kind":"pith_short_12","alias_value":"ZDNS2JXREQSB","created_at":"2026-07-04T15:52:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZDNS2JXREQSB3M3V","created_at":"2026-07-04T15:52:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZDNS2JXR","created_at":"2026-07-04T15:52:59Z"}],"graph_snapshots":[{"event_id":"sha256:2298994191c0bb410d6000a4be4095fbf4e8a3356d899cdc8c4bf890ac860090","target":"graph","created_at":"2026-07-04T15:52:59Z","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/0708.4273/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"With the availability of multiwavelength, multiscale and multiepoch astronomical catalogues, the number of features to describe astronomical objects has increases. The better features we select to classify objects, the higher the classification accuracy is. In this paper, we have used data sets of stars and quasars from near infrared band and radio band. Then best-first search method was applied to select features. For the data with selected features, the algorithm of decision table was implemented. The classification accuracy is more than 95.9%. As a result, the feature selection method impro","authors_text":"D. Gao, Y. Zhang, Y. Zhao","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-08-31T08:46:43Z","title":"Decision table for classifying point sources based on FIRST and 2MASS databases"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0708.4273","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":"sha256:97be455295da91b0408df3725f5f88717997f8daed8c573f38d161aef676e942","target":"record","created_at":"2026-07-04T15:52:59Z","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":"7cc3260c44fa9bcbd7732464f46753b9094812a442fc6c9bac19af4af242fddb","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-08-31T08:46:43Z","title_canon_sha256":"db056bd16502eb13e33dcb58dd6b73afa0c44f2b674695e4023aa35c6ddeebfc"},"schema_version":"1.0","source":{"id":"0708.4273","kind":"arxiv","version":1}},"canonical_sha256":"c8db2d26f124241db3751189351fe245f4b3271726424d77ed9cbdb96df28f2b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c8db2d26f124241db3751189351fe245f4b3271726424d77ed9cbdb96df28f2b","first_computed_at":"2026-07-04T15:52:59.136086Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:52:59.136086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CaHp3LWi1YNFi1UHM7vL03f4fUyZyQFeOHKd9mNxk6dLNKx0U9ELac5NnGi3gxar9jxliU/JwzdOxcSqf3NhAw==","signature_status":"signed_v1","signed_at":"2026-07-04T15:52:59.136463Z","signed_message":"canonical_sha256_bytes"},"source_id":"0708.4273","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:97be455295da91b0408df3725f5f88717997f8daed8c573f38d161aef676e942","sha256:2298994191c0bb410d6000a4be4095fbf4e8a3356d899cdc8c4bf890ac860090"],"state_sha256":"04f20053a8065f6716b92c0d5dde244babba838f76bc3bf9506ecb1d6575b377"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2AULHftPUkA/0Ny7Y+cNpvFjV1sho/xbKo8SEZdK0YLkM15vMadirdAmY3gAnWwSp5ybsk9Tchs+yVwMuLCOAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T17:06:14.198557Z","bundle_sha256":"47a385f492e291d3e0efce7bf7a180db70b24ee7377710f369b4d76fc017096f"}}