{"id":"https://openalex.org/W2085421299","doi":"https://doi.org/10.1007/s00500-014-1504-5","title":"On some properties of directoids","display_name":"On some properties of directoids","publication_year":2014,"publication_date":"2014-11-12","ids":{"openalex":"https://openalex.org/W2085421299","doi":"https://doi.org/10.1007/s00500-014-1504-5","mag":"2085421299"},"language":"en","primary_location":{"id":"doi:10.1007/s00500-014-1504-5","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s00500-014-1504-5","pdf_url":null,"source":{"id":"https://openalex.org/S65753830","display_name":"Soft Computing","issn_l":"1432-7643","issn":["1432-7643","1433-7479"],"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/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Soft Computing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5005373819","display_name":"Ivan Chajda","orcid":"https://orcid.org/0000-0003-3840-3879"},"institutions":[{"id":"https://openalex.org/I70703428","display_name":"Palack\u00fd University Olomouc","ror":"https://ror.org/04qxnmv42","country_code":"CZ","type":"education","lineage":["https://openalex.org/I70703428"]}],"countries":["CZ"],"is_corresponding":false,"raw_author_name":"I. Chajda","raw_affiliation_strings":["Palack\u00fd University, Olomouc, Czech Republic","Palack\u00fd University, Olomouc, Czech Republic#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Palack\u00fd University, Olomouc, Czech Republic","institution_ids":["https://openalex.org/I70703428"]},{"raw_affiliation_string":"Palack\u00fd University, Olomouc, Czech Republic#TAB#","institution_ids":["https://openalex.org/I70703428"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5001423405","display_name":"Jos\u00e9 Gil\u2010F\u00e9rez","orcid":"https://orcid.org/0000-0002-3086-6070"},"institutions":[{"id":"https://openalex.org/I172446870","display_name":"University of Cagliari","ror":"https://ror.org/003109y17","country_code":"IT","type":"education","lineage":["https://openalex.org/I172446870"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"J. Gil-F\u00e9rez","raw_affiliation_strings":["University of Cagliari, Cagliari, Italy"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Cagliari, Cagliari, Italy","institution_ids":["https://openalex.org/I172446870"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5075904550","display_name":"Roberto Giuntini","orcid":"https://orcid.org/0000-0003-2078-0297"},"institutions":[{"id":"https://openalex.org/I172446870","display_name":"University of Cagliari","ror":"https://ror.org/003109y17","country_code":"IT","type":"education","lineage":["https://openalex.org/I172446870"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"R. Giuntini","raw_affiliation_strings":["University of Cagliari, Cagliari, Italy"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Cagliari, Cagliari, Italy","institution_ids":["https://openalex.org/I172446870"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101950308","display_name":"Miroslav Kola\u0159\u00edk","orcid":"https://orcid.org/0000-0002-0641-4584"},"institutions":[{"id":"https://openalex.org/I70703428","display_name":"Palack\u00fd University Olomouc","ror":"https://ror.org/04qxnmv42","country_code":"CZ","type":"education","lineage":["https://openalex.org/I70703428"]}],"countries":["CZ"],"is_corresponding":false,"raw_author_name":"M. Kola\u0159\u00edk","raw_affiliation_strings":["Palack\u00fd University, Olomouc, Czech Republic","Palack\u00fd University, Olomouc, Czech Republic#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Palack\u00fd University, Olomouc, Czech Republic","institution_ids":["https://openalex.org/I70703428"]},{"raw_affiliation_string":"Palack\u00fd University, Olomouc, Czech Republic#TAB#","institution_ids":["https://openalex.org/I70703428"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010857507","display_name":"Antonio Ledda","orcid":"https://orcid.org/0000-0003-2569-7214"},"institutions":[{"id":"https://openalex.org/I172446870","display_name":"University of Cagliari","ror":"https://ror.org/003109y17","country_code":"IT","type":"education","lineage":["https://openalex.org/I172446870"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"A. Ledda","raw_affiliation_strings":["University of Cagliari, Cagliari, Italy"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Cagliari, Cagliari, Italy","institution_ids":["https://openalex.org/I172446870"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101735626","display_name":"Francesco Paoli","orcid":"https://orcid.org/0000-0001-7915-3832"},"institutions":[{"id":"https://openalex.org/I172446870","display_name":"University of Cagliari","ror":"https://ror.org/003109y17","country_code":"IT","type":"education","lineage":["https://openalex.org/I172446870"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"F. Paoli","raw_affiliation_strings":["University of Cagliari, Cagliari, Italy"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Cagliari, Cagliari, Italy","institution_ids":["https://openalex.org/I172446870"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":6,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":2390,"currency":"EUR","value_usd":2990},"apc_paid":null,"fwci":2.2029,"has_fulltext":false,"cited_by_count":6,"citation_normalized_percentile":{"value":0.88125889,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":97},"biblio":{"volume":"19","issue":"4","first_page":"955","last_page":"964"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11727","display_name":"Advanced Algebra and Logic","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11727","display_name":"Advanced Algebra and Logic","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11010","display_name":"Logic, Reasoning, and Knowledge","score":0.9966999888420105,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11671","display_name":"Fuzzy and Soft Set Theory","score":0.9887999892234802,"subfield":{"id":"https://openalex.org/subfields/1803","display_name":"Management Science and Operations Research"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/bounded-function","display_name":"Bounded function","score":0.7945935726165771},{"id":"https://openalex.org/keywords/signature","display_name":"Signature (topology)","score":0.6362754106521606},{"id":"https://openalex.org/keywords/variety","display_name":"Variety (cybernetics)","score":0.6287930011749268},{"id":"https://openalex.org/keywords/decomposition","display_name":"Decomposition","score":0.5873094201087952},{"id":"https://openalex.org/keywords/algebraic-number","display_name":"Algebraic number","score":0.5721597671508789},{"id":"https://openalex.org/keywords/property","display_name":"Property (philosophy)","score":0.5641859173774719},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.5538736581802368},{"id":"https://openalex.org/keywords/algebra-over-a-field","display_name":"Algebra over a field","score":0.47381794452667236},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.4391271471977234},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.3763113021850586},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.07406115531921387}],"concepts":[{"id":"https://openalex.org/C34388435","wikidata":"https://www.wikidata.org/wiki/Q2267362","display_name":"Bounded function","level":2,"score":0.7945935726165771},{"id":"https://openalex.org/C2779696439","wikidata":"https://www.wikidata.org/wiki/Q7512811","display_name":"Signature (topology)","level":2,"score":0.6362754106521606},{"id":"https://openalex.org/C136197465","wikidata":"https://www.wikidata.org/wiki/Q1729295","display_name":"Variety (cybernetics)","level":2,"score":0.6287930011749268},{"id":"https://openalex.org/C124681953","wikidata":"https://www.wikidata.org/wiki/Q339062","display_name":"Decomposition","level":2,"score":0.5873094201087952},{"id":"https://openalex.org/C9376300","wikidata":"https://www.wikidata.org/wiki/Q168817","display_name":"Algebraic number","level":2,"score":0.5721597671508789},{"id":"https://openalex.org/C189950617","wikidata":"https://www.wikidata.org/wiki/Q937228","display_name":"Property (philosophy)","level":2,"score":0.5641859173774719},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.5538736581802368},{"id":"https://openalex.org/C136119220","wikidata":"https://www.wikidata.org/wiki/Q1000660","display_name":"Algebra over a field","level":2,"score":0.47381794452667236},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.4391271471977234},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.3763113021850586},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.07406115531921387},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1007/s00500-014-1504-5","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s00500-014-1504-5","pdf_url":null,"source":{"id":"https://openalex.org/S65753830","display_name":"Soft Computing","issn_l":"1432-7643","issn":["1432-7643","1433-7479"],"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/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Soft Computing","raw_type":"journal-article"},{"id":"pmh:oai:iris.unica.it:11584/58575","is_oa":false,"landing_page_url":"http://hdl.handle.net/11584/58575","pdf_url":null,"source":{"id":"https://openalex.org/S4377196293","display_name":"UNICA IRIS Institutional Research Information System (University of Cagliari)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I172446870","host_organization_name":"University of Cagliari","host_organization_lineage":["https://openalex.org/I172446870"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W823309","https://openalex.org/W31810340","https://openalex.org/W641470562","https://openalex.org/W1599755535","https://openalex.org/W1974382072","https://openalex.org/W2024334303","https://openalex.org/W2026952722","https://openalex.org/W2038698595","https://openalex.org/W2039807511","https://openalex.org/W2055921182","https://openalex.org/W2067862244","https://openalex.org/W2070595403","https://openalex.org/W2091096477","https://openalex.org/W2249228504","https://openalex.org/W2598159508","https://openalex.org/W2804748379","https://openalex.org/W4211185072"],"related_works":["https://openalex.org/W3013085049","https://openalex.org/W1671124163","https://openalex.org/W2168674042","https://openalex.org/W1560496689","https://openalex.org/W4386900933","https://openalex.org/W4385301946","https://openalex.org/W4297797135","https://openalex.org/W3125672081","https://openalex.org/W2535275505","https://openalex.org/W3102011906"],"abstract_inverted_index":null,"counts_by_year":[{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":2}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2016-06-24T00:00:00"}