{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:G65ZKXI34AI7PAD2GDTO5S7PJD","short_pith_number":"pith:G65ZKXI3","canonical_record":{"source":{"id":"2011.07577","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2020-11-15T16:48:56Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"f4a9366b041e457317f30639f3207b2b6b887fe7d5f1098b3c702201e4351416","abstract_canon_sha256":"7c1b315586cc62b7a0eaf9e98e29f1a3070bed67fe5fe9ec538c110af3d3575d"},"schema_version":"1.0"},"canonical_sha256":"37bb955d1be011f7807a30e6eecbef48c7c34b948461557b353f5d075cd6c762","source":{"kind":"arxiv","id":"2011.07577","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.07577","created_at":"2026-07-05T01:51:51Z"},{"alias_kind":"arxiv_version","alias_value":"2011.07577v1","created_at":"2026-07-05T01:51:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.07577","created_at":"2026-07-05T01:51:51Z"},{"alias_kind":"pith_short_12","alias_value":"G65ZKXI34AI7","created_at":"2026-07-05T01:51:51Z"},{"alias_kind":"pith_short_16","alias_value":"G65ZKXI34AI7PAD2","created_at":"2026-07-05T01:51:51Z"},{"alias_kind":"pith_short_8","alias_value":"G65ZKXI3","created_at":"2026-07-05T01:51:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:G65ZKXI34AI7PAD2GDTO5S7PJD","target":"record","payload":{"canonical_record":{"source":{"id":"2011.07577","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2020-11-15T16:48:56Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"f4a9366b041e457317f30639f3207b2b6b887fe7d5f1098b3c702201e4351416","abstract_canon_sha256":"7c1b315586cc62b7a0eaf9e98e29f1a3070bed67fe5fe9ec538c110af3d3575d"},"schema_version":"1.0"},"canonical_sha256":"37bb955d1be011f7807a30e6eecbef48c7c34b948461557b353f5d075cd6c762","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:51:51.276599Z","signature_b64":"qI9N8BbNaM4V8LUBrNd/TnXgO7mjCYjKF4Nu4llZXiup+cbL+adYVcnEe8aIJHL58ElLI4bo1Lu+ye1kQ39DBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"37bb955d1be011f7807a30e6eecbef48c7c34b948461557b353f5d075cd6c762","last_reissued_at":"2026-07-05T01:51:51.276180Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:51:51.276180Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.07577","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":"2026-07-05T01:51:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s/G5kRa66J7ekQL69PE/+iA9tXyMNgRYdcMOTan1E+ecwl8+laclKNt7hTRDSi7CFaXcT6wtI/2MNpUvGf7UBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T07:12:52.475708Z"},"content_sha256":"32265cb371b1977e8713fa1192f431b00c0094144367840beb6f1eaa6336858e","schema_version":"1.0","event_id":"sha256:32265cb371b1977e8713fa1192f431b00c0094144367840beb6f1eaa6336858e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:G65ZKXI34AI7PAD2GDTO5S7PJD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Placement in Integrated Circuits using Cyclic Reinforcement Learning and Simulated Annealing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"cs.AI","authors_text":"Devika Shanbhag, Dhruv Vashisht, Elias Fallon, Haiguang Liao, Harshit Rampal, Levent Burak Kara, Yang Lu","submitted_at":"2020-11-15T16:48:56Z","abstract_excerpt":"Physical design and production of Integrated Circuits (IC) is becoming increasingly more challenging as the sophistication in IC technology is steadily increasing. Placement has been one of the most critical steps in IC physical design. Through decades of research, partition-based, analytical-based and annealing-based placers have been enriching the placement solution toolbox. However, open challenges including long run time and lack of ability to generalize continue to restrict wider applications of existing placement tools. We devise a learning-based placement tool based on cyclic applicatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.07577","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/2011.07577/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":"2026-07-05T01:51:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SBph50/4Uc2aCSDwunBAykHNOgb8wMHSzJBaSBr4m7Qq2OrPF8nCNqsi0DxUC4MfZ9QpjzRY3IjLlnwQ5vOdBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T07:12:52.476324Z"},"content_sha256":"2781b28b8d1ab460acf89f6cbc98e23c1780c22588f2b40dce260fadffb6d465","schema_version":"1.0","event_id":"sha256:2781b28b8d1ab460acf89f6cbc98e23c1780c22588f2b40dce260fadffb6d465"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G65ZKXI34AI7PAD2GDTO5S7PJD/bundle.json","state_url":"https://pith.science/pith/G65ZKXI34AI7PAD2GDTO5S7PJD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G65ZKXI34AI7PAD2GDTO5S7PJD/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":"2026-08-09T07:12:52Z","links":{"resolver":"https://pith.science/pith/G65ZKXI34AI7PAD2GDTO5S7PJD","bundle":"https://pith.science/pith/G65ZKXI34AI7PAD2GDTO5S7PJD/bundle.json","state":"https://pith.science/pith/G65ZKXI34AI7PAD2GDTO5S7PJD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G65ZKXI34AI7PAD2GDTO5S7PJD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:G65ZKXI34AI7PAD2GDTO5S7PJD","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":"7c1b315586cc62b7a0eaf9e98e29f1a3070bed67fe5fe9ec538c110af3d3575d","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2020-11-15T16:48:56Z","title_canon_sha256":"f4a9366b041e457317f30639f3207b2b6b887fe7d5f1098b3c702201e4351416"},"schema_version":"1.0","source":{"id":"2011.07577","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.07577","created_at":"2026-07-05T01:51:51Z"},{"alias_kind":"arxiv_version","alias_value":"2011.07577v1","created_at":"2026-07-05T01:51:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.07577","created_at":"2026-07-05T01:51:51Z"},{"alias_kind":"pith_short_12","alias_value":"G65ZKXI34AI7","created_at":"2026-07-05T01:51:51Z"},{"alias_kind":"pith_short_16","alias_value":"G65ZKXI34AI7PAD2","created_at":"2026-07-05T01:51:51Z"},{"alias_kind":"pith_short_8","alias_value":"G65ZKXI3","created_at":"2026-07-05T01:51:51Z"}],"graph_snapshots":[{"event_id":"sha256:2781b28b8d1ab460acf89f6cbc98e23c1780c22588f2b40dce260fadffb6d465","target":"graph","created_at":"2026-07-05T01:51:51Z","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/2011.07577/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Physical design and production of Integrated Circuits (IC) is becoming increasingly more challenging as the sophistication in IC technology is steadily increasing. Placement has been one of the most critical steps in IC physical design. Through decades of research, partition-based, analytical-based and annealing-based placers have been enriching the placement solution toolbox. However, open challenges including long run time and lack of ability to generalize continue to restrict wider applications of existing placement tools. We devise a learning-based placement tool based on cyclic applicatio","authors_text":"Devika Shanbhag, Dhruv Vashisht, Elias Fallon, Haiguang Liao, Harshit Rampal, Levent Burak Kara, Yang Lu","cross_cats":["cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2020-11-15T16:48:56Z","title":"Placement in Integrated Circuits using Cyclic Reinforcement Learning and Simulated Annealing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.07577","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":"sha256:32265cb371b1977e8713fa1192f431b00c0094144367840beb6f1eaa6336858e","target":"record","created_at":"2026-07-05T01:51:51Z","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":"7c1b315586cc62b7a0eaf9e98e29f1a3070bed67fe5fe9ec538c110af3d3575d","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2020-11-15T16:48:56Z","title_canon_sha256":"f4a9366b041e457317f30639f3207b2b6b887fe7d5f1098b3c702201e4351416"},"schema_version":"1.0","source":{"id":"2011.07577","kind":"arxiv","version":1}},"canonical_sha256":"37bb955d1be011f7807a30e6eecbef48c7c34b948461557b353f5d075cd6c762","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"37bb955d1be011f7807a30e6eecbef48c7c34b948461557b353f5d075cd6c762","first_computed_at":"2026-07-05T01:51:51.276180Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:51:51.276180Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qI9N8BbNaM4V8LUBrNd/TnXgO7mjCYjKF4Nu4llZXiup+cbL+adYVcnEe8aIJHL58ElLI4bo1Lu+ye1kQ39DBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:51:51.276599Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.07577","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:32265cb371b1977e8713fa1192f431b00c0094144367840beb6f1eaa6336858e","sha256:2781b28b8d1ab460acf89f6cbc98e23c1780c22588f2b40dce260fadffb6d465"],"state_sha256":"8e6fce9b4dfa76cb7e89d93db3613b89bd6c98e76b8df3b4143b09099dfd77fb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DuzDosl5Y0tHfNNNsbst4iLKBc+EMcar7qEMspm3BJplmcNY6gMhurimNuCV8FeE01ege+ITSGVK0+dpzcZBAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T07:12:52.481972Z","bundle_sha256":"7903e84244a179410020fe0461fffe0c098bb5d7b87d262b6f0f17995367d3b2"}}