Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2079643884', 'doi': 'https://doi.org/10.1007/bf02012618', 'title': 'Gamma-minimax estimators for the mean of a multivariate normal distribution with partially unknown covariance matrix', 'display_name': 'Gamma-minimax estimators for the mean of a multivariate normal distribution with partially unknown covariance matrix', 'publication_year': 1995, 'publication_date': '1995-01-01', 'ids': {'openalex': 'https://openalex.org/W2079643884', 'doi': 'https://doi.org/10.1007/bf02012618', 'mag': '2079643884'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1007/bf02012618', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S77092102', 'display_name': 'Acta Mathematicae Applicatae Sinica English Series', 'issn_l': '0168-9673', 'issn': ['0168-9673', '1618-3932'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310319900', 'host_organization_name': 'Springer Science+Business Media', 'host_organization_lineage': ['https://openalex.org/P4310319965', 'https://openalex.org/P4310319900'], 'host_organization_lineage_names': ['Springer Nature', 'Springer Science+Business Media'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5083544593', 'display_name': 'Lanxing Chen', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I116953780', 'display_name': 'Tongji University', 'ror': 'https://ror.org/03rc6as71', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I116953780']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Lanxing Chen', 'raw_affiliation_strings': ['Department of Mathematics, Tongji University, Shanghai, China'], 'affiliations': [{'raw_affiliation_string': 'Department of Mathematics, Tongji University, Shanghai, China', 'institution_ids': ['https://openalex.org/I116953780']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5004958914', 'display_name': 'Jürgen Lehn', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I107257983', 'display_name': 'Darmstadt University of Applied Sciences', 'ror': 'https://ror.org/047wbd030', 'country_code': 'DE', 'type': 'education', 'lineage': ['https://openalex.org/I107257983']}], 'countries': ['DE'], 'is_corresponding': False, 'raw_author_name': 'Jürgen Lehn', 'raw_affiliation_strings': ['Fachbereich Mathematik Technische Hochschule Darmstadt, Germany'], 'affiliations': [{'raw_affiliation_string': 'Fachbereich Mathematik Technische Hochschule Darmstadt, Germany', 'institution_ids': ['https://openalex.org/I107257983']}]}], 'institution_assertions': [], 'countries_distinct_count': 2, 'institutions_distinct_count': 2, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 2590, 'currency': 'EUR', 'value_usd': 3190, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 0.0, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 0, 'citation_normalized_percentile': {'value': 0.0, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 0, 'max': 53}, 'biblio': {'volume': '11', 'issue': '1', 'first_page': '11', 'last_page': '16'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T11871', 'display_name': 'Advanced Statistical Methods and Models', 'score': 0.9511, 'subfield': {'id': 'https://openalex.org/subfields/2613', 'display_name': 'Statistics and Probability'}, 'field': {'id': 'https://openalex.org/fields/26', 'display_name': 'Mathematics'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T11871', 'display_name': 'Advanced Statistical Methods and Models', 'score': 0.9511, 'subfield': {'id': 'https://openalex.org/subfields/2613', 'display_name': 'Statistics and Probability'}, 'field': {'id': 'https://openalex.org/fields/26', 'display_name': 'Mathematics'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10968', 'display_name': 'Statistical Distribution Estimation and Applications', 'score': 0.9257, 'subfield': {'id': 'https://openalex.org/subfields/2613', 'display_name': 'Statistics and Probability'}, 'field': {'id': 'https://openalex.org/fields/26', 'display_name': 'Mathematics'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/matrix-t-distribution', 'display_name': 'Matrix t-distribution', 'score': 0.62325615}, {'id': 'https://openalex.org/keywords/scatter-matrix', 'display_name': 'Scatter matrix', 'score': 0.51266044}, {'id': 'https://openalex.org/keywords/matrix', 'display_name': 'Matrix (chemical analysis)', 'score': 0.4169332}, {'id': 'https://openalex.org/keywords/multivariate-t-distribution', 'display_name': 'Multivariate t-distribution', 'score': 0.41490096}], 'concepts': [{'id': 'https://openalex.org/C177384507', 'wikidata': 'https://www.wikidata.org/wiki/Q1149000', 'display_name': 'Multivariate normal distribution', 'level': 3, 'score': 0.7261534}, {'id': 'https://openalex.org/C149728462', 'wikidata': 'https://www.wikidata.org/wiki/Q751319', 'display_name': 'Minimax', 'level': 2, 'score': 0.6719048}, {'id': 'https://openalex.org/C33923547', 'wikidata': 'https://www.wikidata.org/wiki/Q395', 'display_name': 'Mathematics', 'level': 0, 'score': 0.65084946}, {'id': 'https://openalex.org/C185142706', 'wikidata': 'https://www.wikidata.org/wiki/Q1134404', 'display_name': 'Covariance matrix', 'level': 2, 'score': 0.6504239}, {'id': 'https://openalex.org/C43514536', 'wikidata': 'https://www.wikidata.org/wiki/Q17098779', 'display_name': 'Matrix t-distribution', 'level': 4, 'score': 0.62325615}, {'id': 'https://openalex.org/C161584116', 'wikidata': 'https://www.wikidata.org/wiki/Q1952580', 'display_name': 'Multivariate statistics', 'level': 2, 'score': 0.6160849}, {'id': 'https://openalex.org/C185429906', 'wikidata': 'https://www.wikidata.org/wiki/Q1130160', 'display_name': 'Estimator', 'level': 2, 'score': 0.6036028}, {'id': 'https://openalex.org/C105795698', 'wikidata': 'https://www.wikidata.org/wiki/Q12483', 'display_name': 'Statistics', 'level': 1, 'score': 0.5662331}, {'id': 'https://openalex.org/C178650346', 'wikidata': 'https://www.wikidata.org/wiki/Q201984', 'display_name': 'Covariance', 'level': 2, 'score': 0.557336}, {'id': 'https://openalex.org/C176917957', 'wikidata': 'https://www.wikidata.org/wiki/Q7430596', 'display_name': 'Scatter matrix', 'level': 4, 'score': 0.51266044}, {'id': 'https://openalex.org/C180877172', 'wikidata': 'https://www.wikidata.org/wiki/Q5401390', 'display_name': 'Estimation of covariance matrices', 'level': 3, 'score': 0.49154767}, {'id': 'https://openalex.org/C79708077', 'wikidata': 'https://www.wikidata.org/wiki/Q7051753', 'display_name': 'Normal-Wishart distribution', 'level': 4, 'score': 0.43353572}, {'id': 'https://openalex.org/C106487976', 'wikidata': 'https://www.wikidata.org/wiki/Q685816', 'display_name': 'Matrix (chemical analysis)', 'level': 2, 'score': 0.4169332}, {'id': 'https://openalex.org/C172713675', 'wikidata': 'https://www.wikidata.org/wiki/Q6935144', 'display_name': 'Multivariate t-distribution', 'level': 4, 'score': 0.41490096}, {'id': 'https://openalex.org/C28826006', 'wikidata': 'https://www.wikidata.org/wiki/Q33521', 'display_name': 'Applied mathematics', 'level': 1, 'score': 0.38186252}, {'id': 'https://openalex.org/C126255220', 'wikidata': 'https://www.wikidata.org/wiki/Q141495', 'display_name': 'Mathematical optimization', 'level': 1, 'score': 0.17503175}, {'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.117759824}, {'id': 'https://openalex.org/C43617362', 'wikidata': 'https://www.wikidata.org/wiki/Q170050', 'display_name': 'Chromatography', 'level': 1, 'score': 0.066236526}], 'mesh': [], 'locations_count': 1, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1007/bf02012618', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S77092102', 'display_name': 'Acta Mathematicae Applicatae Sinica English Series', 'issn_l': '0168-9673', 'issn': ['0168-9673', '1618-3932'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310319900', 'host_organization_name': 'Springer Science+Business Media', 'host_organization_lineage': ['https://openalex.org/P4310319965', 'https://openalex.org/P4310319900'], 'host_organization_lineage_names': ['Springer Nature', 'Springer Science+Business Media'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 11, 'referenced_works': ['https://openalex.org/W2006202239', 'https://openalex.org/W2019048426', 'https://openalex.org/W2086957086', 'https://openalex.org/W2088579082', 'https://openalex.org/W2090963365', 'https://openalex.org/W2477633158', 'https://openalex.org/W2522754005', 'https://openalex.org/W2797328151', 'https://openalex.org/W4240952817', 'https://openalex.org/W4245448682', 'https://openalex.org/W4299512035'], 'related_works': ['https://openalex.org/W3134381438', 'https://openalex.org/W2953459263', 'https://openalex.org/W2913857634', 'https://openalex.org/W2489708607', 'https://openalex.org/W2364482911', 'https://openalex.org/W2021128345', 'https://openalex.org/W2019965196', 'https://openalex.org/W2019515979', 'https://openalex.org/W1981092891', 'https://openalex.org/W1570411980'], 'abstract_inverted_index': None, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2079643884', 'counts_by_year': [], 'updated_date': '2024-12-13T13:52:03.620237', 'created_date': '2016-06-24'}