{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:IRPYS5VYCGU6YP47ONJ3KFRPH5","short_pith_number":"pith:IRPYS5VY","canonical_record":{"source":{"id":"1309.5689","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2013-09-23T03:28:07Z","cross_cats_sorted":[],"title_canon_sha256":"1d3b8f1f35a80f6083643214cb8b5cf372a3d792ea89473e039181608af5a9f3","abstract_canon_sha256":"5d666867eeded90640077cf5cacc7dc68ea17ea93ce6b33c3600d24e1c2292ea"},"schema_version":"1.0"},"canonical_sha256":"445f8976b811a9ec3f9f7353b5162f3f5570c19305b0a3573acd462bf2533a88","source":{"kind":"arxiv","id":"1309.5689","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.5689","created_at":"2026-05-18T03:12:34Z"},{"alias_kind":"arxiv_version","alias_value":"1309.5689v1","created_at":"2026-05-18T03:12:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.5689","created_at":"2026-05-18T03:12:34Z"},{"alias_kind":"pith_short_12","alias_value":"IRPYS5VYCGU6","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"IRPYS5VYCGU6YP47","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"IRPYS5VY","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:IRPYS5VYCGU6YP47ONJ3KFRPH5","target":"record","payload":{"canonical_record":{"source":{"id":"1309.5689","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2013-09-23T03:28:07Z","cross_cats_sorted":[],"title_canon_sha256":"1d3b8f1f35a80f6083643214cb8b5cf372a3d792ea89473e039181608af5a9f3","abstract_canon_sha256":"5d666867eeded90640077cf5cacc7dc68ea17ea93ce6b33c3600d24e1c2292ea"},"schema_version":"1.0"},"canonical_sha256":"445f8976b811a9ec3f9f7353b5162f3f5570c19305b0a3573acd462bf2533a88","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:12:34.468497Z","signature_b64":"yGd3tmMRcZw9CQv0tVy4xlWD4LE9Be1B2C6HiECsvmyd96Ww5i+sSpoAUPmEZhlFsuG8DaUYvwyhY0uMIU41Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"445f8976b811a9ec3f9f7353b5162f3f5570c19305b0a3573acd462bf2533a88","last_reissued_at":"2026-05-18T03:12:34.467664Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:12:34.467664Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.5689","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":"2026-05-18T03:12:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"auHisNyEuPNoTXlhz5V4P7HsX/nevIYeJ05iJK/BK7odcDFvUs7QCOEFauShD64J5ZxMkfx52BFRAnXUGf+5CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T23:43:55.948505Z"},"content_sha256":"86b5dcbd6aab85f031a65d2f3990e4229ff64cb4630a61c7d0aacd8535d48ea4","schema_version":"1.0","event_id":"sha256:86b5dcbd6aab85f031a65d2f3990e4229ff64cb4630a61c7d0aacd8535d48ea4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:IRPYS5VYCGU6YP47ONJ3KFRPH5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modularity Index Metrics for Java-Based Open Source Software Projects","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SE","authors_text":"Andi Wahju Rahardjo Emanuel, Jazi Eko Istiyanto, Khabib Mustofa, Retantyo Wardoyo","submitted_at":"2013-09-23T03:28:07Z","abstract_excerpt":"Open Source Software (OSS) Projects are gaining popularity these days, and they become alternatives in building software system. Despite many failures in these projects, there are some success stories with one of the identified success factors is modularity. This paper presents the first quantitative software metrics to measure modularity level of Java-based OSS Projects called Modularity Index. This software metrics is formulated by analyzing modularity traits such as size, complexity, cohesion, and coupling of 59 Java-based OSS Projects from sourceforge.net using SONAR tool. These OSS Projec"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.5689","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":"2026-05-18T03:12:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i0d0lKiNs7K5z3ROZHr0lZSbtDXHNohb4olvGWBoEZvcdiJu3RwCCW+/KLFfLVrc33IjEDdOvyRvhKDkrhvYBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T23:43:55.949154Z"},"content_sha256":"1651c46bd04bbf5910ef48ab167bb73ecfd8d6e008dff46f7b3e8f1c72f9d55d","schema_version":"1.0","event_id":"sha256:1651c46bd04bbf5910ef48ab167bb73ecfd8d6e008dff46f7b3e8f1c72f9d55d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IRPYS5VYCGU6YP47ONJ3KFRPH5/bundle.json","state_url":"https://pith.science/pith/IRPYS5VYCGU6YP47ONJ3KFRPH5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IRPYS5VYCGU6YP47ONJ3KFRPH5/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":"2026-06-06T23:43:55Z","links":{"resolver":"https://pith.science/pith/IRPYS5VYCGU6YP47ONJ3KFRPH5","bundle":"https://pith.science/pith/IRPYS5VYCGU6YP47ONJ3KFRPH5/bundle.json","state":"https://pith.science/pith/IRPYS5VYCGU6YP47ONJ3KFRPH5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IRPYS5VYCGU6YP47ONJ3KFRPH5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:IRPYS5VYCGU6YP47ONJ3KFRPH5","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":"5d666867eeded90640077cf5cacc7dc68ea17ea93ce6b33c3600d24e1c2292ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2013-09-23T03:28:07Z","title_canon_sha256":"1d3b8f1f35a80f6083643214cb8b5cf372a3d792ea89473e039181608af5a9f3"},"schema_version":"1.0","source":{"id":"1309.5689","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.5689","created_at":"2026-05-18T03:12:34Z"},{"alias_kind":"arxiv_version","alias_value":"1309.5689v1","created_at":"2026-05-18T03:12:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.5689","created_at":"2026-05-18T03:12:34Z"},{"alias_kind":"pith_short_12","alias_value":"IRPYS5VYCGU6","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"IRPYS5VYCGU6YP47","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"IRPYS5VY","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:1651c46bd04bbf5910ef48ab167bb73ecfd8d6e008dff46f7b3e8f1c72f9d55d","target":"graph","created_at":"2026-05-18T03:12:34Z","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":"Open Source Software (OSS) Projects are gaining popularity these days, and they become alternatives in building software system. Despite many failures in these projects, there are some success stories with one of the identified success factors is modularity. This paper presents the first quantitative software metrics to measure modularity level of Java-based OSS Projects called Modularity Index. This software metrics is formulated by analyzing modularity traits such as size, complexity, cohesion, and coupling of 59 Java-based OSS Projects from sourceforge.net using SONAR tool. These OSS Projec","authors_text":"Andi Wahju Rahardjo Emanuel, Jazi Eko Istiyanto, Khabib Mustofa, Retantyo Wardoyo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2013-09-23T03:28:07Z","title":"Modularity Index Metrics for Java-Based Open Source Software Projects"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.5689","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":"sha256:86b5dcbd6aab85f031a65d2f3990e4229ff64cb4630a61c7d0aacd8535d48ea4","target":"record","created_at":"2026-05-18T03:12:34Z","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":"5d666867eeded90640077cf5cacc7dc68ea17ea93ce6b33c3600d24e1c2292ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2013-09-23T03:28:07Z","title_canon_sha256":"1d3b8f1f35a80f6083643214cb8b5cf372a3d792ea89473e039181608af5a9f3"},"schema_version":"1.0","source":{"id":"1309.5689","kind":"arxiv","version":1}},"canonical_sha256":"445f8976b811a9ec3f9f7353b5162f3f5570c19305b0a3573acd462bf2533a88","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"445f8976b811a9ec3f9f7353b5162f3f5570c19305b0a3573acd462bf2533a88","first_computed_at":"2026-05-18T03:12:34.467664Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:12:34.467664Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yGd3tmMRcZw9CQv0tVy4xlWD4LE9Be1B2C6HiECsvmyd96Ww5i+sSpoAUPmEZhlFsuG8DaUYvwyhY0uMIU41Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:12:34.468497Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.5689","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:86b5dcbd6aab85f031a65d2f3990e4229ff64cb4630a61c7d0aacd8535d48ea4","sha256:1651c46bd04bbf5910ef48ab167bb73ecfd8d6e008dff46f7b3e8f1c72f9d55d"],"state_sha256":"91abdc128530d3b576998bc8cce2e8580898395dfb775396e7a80cb582e11b53"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K3jeMvr+FmmCausnpHQcL+0fSdYn3TSE6ZhxnzwUf5dl+C3kH6OtYGru/+Yn0NMbkrMT099qXTKRuIWGQEKoCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T23:43:55.952461Z","bundle_sha256":"53268dcb0f76d1a2fb01d1eab80b3b289d41976ca3df4d8b70d10960688217bc"}}