{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:HAACQTJPFRMXUXPU4N3WMPB25T","short_pith_number":"pith:HAACQTJP","canonical_record":{"source":{"id":"1001.5348","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2010-01-29T08:10:26Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"21e2821d1da48310f17ace619fd672a2a8c207e31d0fc90bdbc819d4cc091968","abstract_canon_sha256":"a69ac8812777b2d3005049cab35fc5f764c6e4a97990e8fa3ca1c0e6cd2ab973"},"schema_version":"1.0"},"canonical_sha256":"3800284d2f2c597a5df4e377663c3aecce00062118cbaaa92bc6c7fc0dc4e8f8","source":{"kind":"arxiv","id":"1001.5348","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.5348","created_at":"2026-05-18T01:04:58Z"},{"alias_kind":"arxiv_version","alias_value":"1001.5348v1","created_at":"2026-05-18T01:04:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.5348","created_at":"2026-05-18T01:04:58Z"},{"alias_kind":"pith_short_12","alias_value":"HAACQTJPFRMX","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"HAACQTJPFRMXUXPU","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"HAACQTJP","created_at":"2026-05-18T12:26:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:HAACQTJPFRMXUXPU4N3WMPB25T","target":"record","payload":{"canonical_record":{"source":{"id":"1001.5348","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2010-01-29T08:10:26Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"21e2821d1da48310f17ace619fd672a2a8c207e31d0fc90bdbc819d4cc091968","abstract_canon_sha256":"a69ac8812777b2d3005049cab35fc5f764c6e4a97990e8fa3ca1c0e6cd2ab973"},"schema_version":"1.0"},"canonical_sha256":"3800284d2f2c597a5df4e377663c3aecce00062118cbaaa92bc6c7fc0dc4e8f8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:58.739052Z","signature_b64":"xiBztRIYMgKRU8YoKAA7wfRNO4E+rhh0J5TP5OeJ2M4lzZRXdmNVzwWoyFi+oqkP/Pfw7MBQkHfNatsJNmteDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3800284d2f2c597a5df4e377663c3aecce00062118cbaaa92bc6c7fc0dc4e8f8","last_reissued_at":"2026-05-18T01:04:58.738349Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:58.738349Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1001.5348","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":"2026-05-18T01:04:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s/8WEf/dwF1YPKRyL5J5yibLAJV9sZXFhup1RpalYBJyGtvU6GT9SEEaUO8ZADCTzZsqdTWkJGfSyznZ3+wGBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T04:23:24.757100Z"},"content_sha256":"bcd5a9664347361cbce2625917e0e8888b4bfd7fea04d9dcf0b42b24630fcfe0","schema_version":"1.0","event_id":"sha256:bcd5a9664347361cbce2625917e0e8888b4bfd7fea04d9dcf0b42b24630fcfe0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:HAACQTJPFRMXUXPU4N3WMPB25T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Performance Comparisons of PSO based Clustering","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"cs.NE","authors_text":"Gunanidhi Pradhan, J.V.R. Murthy, P.V.G.D. Prasad Reddy, Sabyasachi Pattnaik, Suresh Chandra Satapathy","submitted_at":"2010-01-29T08:10:26Z","abstract_excerpt":"In this paper we have investigated the performance of PSO Particle Swarm Optimization based clustering on few real world data sets and one artificial data set. The performances are measured by two metric namely quantization error and inter-cluster distance. The K means clustering algorithm is first implemented for all data sets, the results of which form the basis of comparison of PSO based approaches. We have explored different variants of PSO such as gbest, lbest ring, lbest vonneumann and Hybrid PSO for comparison purposes. The results reveal that PSO based clustering algorithms perform bet"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.5348","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":""},"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":"2026-05-18T01:04:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sudfWNOgA7+OD6/YgCQMCZ7cLBDenzJW8umop+phZv4MEhuxqh4I2mR6RKLZFZV22RMHdA6h4/575l58RGfwBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T04:23:24.757898Z"},"content_sha256":"b10aefc5e6be648250bd828d15b52241726a33983bd85d23fac4831e371896ce","schema_version":"1.0","event_id":"sha256:b10aefc5e6be648250bd828d15b52241726a33983bd85d23fac4831e371896ce"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HAACQTJPFRMXUXPU4N3WMPB25T/bundle.json","state_url":"https://pith.science/pith/HAACQTJPFRMXUXPU4N3WMPB25T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HAACQTJPFRMXUXPU4N3WMPB25T/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":"2026-06-10T04:23:24Z","links":{"resolver":"https://pith.science/pith/HAACQTJPFRMXUXPU4N3WMPB25T","bundle":"https://pith.science/pith/HAACQTJPFRMXUXPU4N3WMPB25T/bundle.json","state":"https://pith.science/pith/HAACQTJPFRMXUXPU4N3WMPB25T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HAACQTJPFRMXUXPU4N3WMPB25T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:HAACQTJPFRMXUXPU4N3WMPB25T","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":"a69ac8812777b2d3005049cab35fc5f764c6e4a97990e8fa3ca1c0e6cd2ab973","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2010-01-29T08:10:26Z","title_canon_sha256":"21e2821d1da48310f17ace619fd672a2a8c207e31d0fc90bdbc819d4cc091968"},"schema_version":"1.0","source":{"id":"1001.5348","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.5348","created_at":"2026-05-18T01:04:58Z"},{"alias_kind":"arxiv_version","alias_value":"1001.5348v1","created_at":"2026-05-18T01:04:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.5348","created_at":"2026-05-18T01:04:58Z"},{"alias_kind":"pith_short_12","alias_value":"HAACQTJPFRMX","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"HAACQTJPFRMXUXPU","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"HAACQTJP","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:b10aefc5e6be648250bd828d15b52241726a33983bd85d23fac4831e371896ce","target":"graph","created_at":"2026-05-18T01:04:58Z","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":"In this paper we have investigated the performance of PSO Particle Swarm Optimization based clustering on few real world data sets and one artificial data set. The performances are measured by two metric namely quantization error and inter-cluster distance. The K means clustering algorithm is first implemented for all data sets, the results of which form the basis of comparison of PSO based approaches. We have explored different variants of PSO such as gbest, lbest ring, lbest vonneumann and Hybrid PSO for comparison purposes. The results reveal that PSO based clustering algorithms perform bet","authors_text":"Gunanidhi Pradhan, J.V.R. Murthy, P.V.G.D. Prasad Reddy, Sabyasachi Pattnaik, Suresh Chandra Satapathy","cross_cats":["cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2010-01-29T08:10:26Z","title":"Performance Comparisons of PSO based Clustering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.5348","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:bcd5a9664347361cbce2625917e0e8888b4bfd7fea04d9dcf0b42b24630fcfe0","target":"record","created_at":"2026-05-18T01:04:58Z","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":"a69ac8812777b2d3005049cab35fc5f764c6e4a97990e8fa3ca1c0e6cd2ab973","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NE","submitted_at":"2010-01-29T08:10:26Z","title_canon_sha256":"21e2821d1da48310f17ace619fd672a2a8c207e31d0fc90bdbc819d4cc091968"},"schema_version":"1.0","source":{"id":"1001.5348","kind":"arxiv","version":1}},"canonical_sha256":"3800284d2f2c597a5df4e377663c3aecce00062118cbaaa92bc6c7fc0dc4e8f8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3800284d2f2c597a5df4e377663c3aecce00062118cbaaa92bc6c7fc0dc4e8f8","first_computed_at":"2026-05-18T01:04:58.738349Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:58.738349Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xiBztRIYMgKRU8YoKAA7wfRNO4E+rhh0J5TP5OeJ2M4lzZRXdmNVzwWoyFi+oqkP/Pfw7MBQkHfNatsJNmteDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:58.739052Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.5348","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bcd5a9664347361cbce2625917e0e8888b4bfd7fea04d9dcf0b42b24630fcfe0","sha256:b10aefc5e6be648250bd828d15b52241726a33983bd85d23fac4831e371896ce"],"state_sha256":"a269091cda214b6a4f11f5bd90a84ddfff688d300beef380dfea8cb88a4db5b2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2/TDoLcRdeuflIo5NBZBwXqkbDleNx16mc4rW7AD5//To8/nw8KZgLcnlfCDUAzoIuHQWo03WZsUjs0DN/61Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T04:23:24.761714Z","bundle_sha256":"a33e1464cf27d755cf427c31d8a11896dda4775df973c3c2b8a08aad5e44651f"}}