{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:PFPKAJLPOTKMXSD4AAIN5UZROW","short_pith_number":"pith:PFPKAJLP","schema_version":"1.0","canonical_sha256":"795ea0256f74d4cbc87c0010ded33175bdf4bae960842a3d128aaaa0bbd7c50f","source":{"kind":"arxiv","id":"1807.10276","version":2},"attestation_state":"computed","paper":{"title":"A new and stable estimation method of country economic fitness and product complexity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.soc-ph","q-fin.EC"],"primary_cat":"econ.GN","authors_text":"Andrea Tacchella, Dario Mazzilli, Luciano Pietronero, Paolo Butt\\`a, Vito D. P. Servedio","submitted_at":"2018-07-23T14:07:29Z","abstract_excerpt":"We present a new metric estimating fitness of countries and complexity of products by exploiting a non-linear non-homogeneous map applied to the publicly available information on the goods exported by a country. The non homogeneous terms guarantee both convergence and stability. After a suitable rescaling of the relevant quantities, the non homogeneous terms are eventually set to zero so that this new metric is parameter free. This new map almost reproduces the results of the original homogeneous metrics already defined in literature and allows for an approximate analytic solution in case of a"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1807.10276","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"econ.GN","submitted_at":"2018-07-23T14:07:29Z","cross_cats_sorted":["physics.soc-ph","q-fin.EC"],"title_canon_sha256":"98feaa482a7634aa20f4acf8b9e7c3862c77fb0975be1ebbf4554b77ed014b48","abstract_canon_sha256":"3c38f25847609d3d319adb317a37e568e1542598efbcc5a3eb544f909a8da370"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:51.658009Z","signature_b64":"KjMt6ASPpGHy6gABdhGNKjybzJ1Wvk3EctHVUDrNOO54TPR5DSVvx0lD9ekz+gGJcpNi2FPXWcQ7Q2/O/JMwDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"795ea0256f74d4cbc87c0010ded33175bdf4bae960842a3d128aaaa0bbd7c50f","last_reissued_at":"2026-05-18T00:00:51.657411Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:51.657411Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A new and stable estimation method of country economic fitness and product complexity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.soc-ph","q-fin.EC"],"primary_cat":"econ.GN","authors_text":"Andrea Tacchella, Dario Mazzilli, Luciano Pietronero, Paolo Butt\\`a, Vito D. P. Servedio","submitted_at":"2018-07-23T14:07:29Z","abstract_excerpt":"We present a new metric estimating fitness of countries and complexity of products by exploiting a non-linear non-homogeneous map applied to the publicly available information on the goods exported by a country. The non homogeneous terms guarantee both convergence and stability. After a suitable rescaling of the relevant quantities, the non homogeneous terms are eventually set to zero so that this new metric is parameter free. This new map almost reproduces the results of the original homogeneous metrics already defined in literature and allows for an approximate analytic solution in case of a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.10276","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1807.10276","created_at":"2026-05-18T00:00:51.657503+00:00"},{"alias_kind":"arxiv_version","alias_value":"1807.10276v2","created_at":"2026-05-18T00:00:51.657503+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.10276","created_at":"2026-05-18T00:00:51.657503+00:00"},{"alias_kind":"pith_short_12","alias_value":"PFPKAJLPOTKM","created_at":"2026-05-18T12:32:43.782077+00:00"},{"alias_kind":"pith_short_16","alias_value":"PFPKAJLPOTKMXSD4","created_at":"2026-05-18T12:32:43.782077+00:00"},{"alias_kind":"pith_short_8","alias_value":"PFPKAJLP","created_at":"2026-05-18T12:32:43.782077+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/PFPKAJLPOTKMXSD4AAIN5UZROW","json":"https://pith.science/pith/PFPKAJLPOTKMXSD4AAIN5UZROW.json","graph_json":"https://pith.science/api/pith-number/PFPKAJLPOTKMXSD4AAIN5UZROW/graph.json","events_json":"https://pith.science/api/pith-number/PFPKAJLPOTKMXSD4AAIN5UZROW/events.json","paper":"https://pith.science/paper/PFPKAJLP"},"agent_actions":{"view_html":"https://pith.science/pith/PFPKAJLPOTKMXSD4AAIN5UZROW","download_json":"https://pith.science/pith/PFPKAJLPOTKMXSD4AAIN5UZROW.json","view_paper":"https://pith.science/paper/PFPKAJLP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1807.10276&json=true","fetch_graph":"https://pith.science/api/pith-number/PFPKAJLPOTKMXSD4AAIN5UZROW/graph.json","fetch_events":"https://pith.science/api/pith-number/PFPKAJLPOTKMXSD4AAIN5UZROW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PFPKAJLPOTKMXSD4AAIN5UZROW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PFPKAJLPOTKMXSD4AAIN5UZROW/action/storage_attestation","attest_author":"https://pith.science/pith/PFPKAJLPOTKMXSD4AAIN5UZROW/action/author_attestation","sign_citation":"https://pith.science/pith/PFPKAJLPOTKMXSD4AAIN5UZROW/action/citation_signature","submit_replication":"https://pith.science/pith/PFPKAJLPOTKMXSD4AAIN5UZROW/action/replication_record"}},"created_at":"2026-05-18T00:00:51.657503+00:00","updated_at":"2026-05-18T00:00:51.657503+00:00"}