{"id":"https://openalex.org/W2392564385","doi":null,"title":"Study on the morbidity problem in grey model","display_name":"Study on the morbidity problem in grey model","publication_year":2008,"publication_date":"2008-01-01","ids":{"openalex":"https://openalex.org/W2392564385","mag":"2392564385"},"language":"en","primary_location":{"id":"mag:2392564385","doi":null,"is_oa":false,"landing_page_url":"http://en.cnki.com.cn/Article_en/CJFDTOTAL-XTLL200801023.htm","pdf_url":null,"source":{"id":"https://openalex.org/S88664677","display_name":"Systems Engineering - Theory & Practice","issn_l":"1874-8651","issn":["1874-8651"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Systems Engineering - Theory & Practice","raw_type":null},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"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/A5043201253","display_name":"Zhengpeng Wu","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I9842412","display_name":"Nanjing University of Aeronautics and Astronautics","ror":"https://ror.org/01scyh794","country_code":"CN","type":"education","lineage":["https://openalex.org/I9842412"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhengpeng Wu","raw_affiliation_strings":["Astronautics,Nanjing 210016,China)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Astronautics,Nanjing 210016,China)","institution_ids":["https://openalex.org/I9842412"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5070239285","display_name":"Sifeng Liu","orcid":"https://orcid.org/0000-0002-5872-9457","observed_orcids":["https://orcid.org/0000-0002-5872-9457","https://orcid.org/0009-0002-9056-8849"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Sifeng Liu","raw_affiliation_strings":["~2,DANG Yao-guo~2,MI Chuan-min~2,XIE Nai-ming~2,CUI Li-zhi~2"],"raw_orcid":"https://orcid.org/0000-0002-5872-9457","affiliations":[{"raw_affiliation_string":"~2,DANG Yao-guo~2,MI Chuan-min~2,XIE Nai-ming~2,CUI Li-zhi~2","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.8471,"has_fulltext":false,"cited_by_count":10,"citation_normalized_percentile":{"value":0.75363466,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12368","display_name":"Grey System Theory Applications","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T12368","display_name":"Grey System Theory Applications","score":1.0,"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"}},{"id":"https://openalex.org/T14351","display_name":"Statistical and Computational Modeling","score":0.0,"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/T11810","display_name":"Complex Systems and Decision Making","score":0.0,"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/grey-forecasting-model","display_name":"grey prediction model","score":0.7149999737739563},{"id":"https://openalex.org/keywords/gm-1-1-model","display_name":"GM(1,1) model","score":0.8529999852180481},{"id":"https://openalex.org/keywords/condition-number","display_name":"condition number","score":0.7400000095367432},{"id":"https://openalex.org/keywords/grey-prediction","display_name":"grey forecasting","score":0.6729999780654907},{"id":"https://openalex.org/keywords/initial-values","display_name":"initial values","score":0.4050000011920929}],"concepts":[{"id":"https://openalex.org/C2778112365","wikidata":"https://www.wikidata.org/wiki/Q3511065","display_name":"Sequence (biology)","level":2,"score":0.7328490018844604},{"id":"https://openalex.org/C2780813799","wikidata":"https://www.wikidata.org/wiki/Q3274237","display_name":"Zero (linguistics)","level":2,"score":0.7289286851882935},{"id":"https://openalex.org/C2780876879","wikidata":"https://www.wikidata.org/wiki/Q3054749","display_name":"Meaning (existential)","level":2,"score":0.5905675292015076},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.5414159297943115},{"id":"https://openalex.org/C98045186","wikidata":"https://www.wikidata.org/wiki/Q205663","display_name":"Process (computing)","level":2,"score":0.46466103196144104},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.42257237434387207},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.39691412448883057},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.1336965560913086},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.10026669502258301},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.09900149703025818},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.0657547116279602},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","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/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:2392564385","doi":null,"is_oa":false,"landing_page_url":"http://en.cnki.com.cn/Article_en/CJFDTOTAL-XTLL200801023.htm","pdf_url":null,"source":{"id":"https://openalex.org/S88664677","display_name":"Systems Engineering - Theory & Practice","issn_l":"1874-8651","issn":["1874-8651"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Systems Engineering - Theory & Practice","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2373579323","https://openalex.org/W2540454871","https://openalex.org/W2281633263","https://openalex.org/W2369994643","https://openalex.org/W7110545287","https://openalex.org/W2766863502","https://openalex.org/W2356662559","https://openalex.org/W878838734","https://openalex.org/W1016761689","https://openalex.org/W2385057757"],"abstract_inverted_index":{"Whether":[0],"the":[1,7,22,28,37,44,52,83],"model":[2],"we":[3],"have":[4],"built":[5],"has":[6],"morbidity":[8,23,45,84],"problem":[9,24,46,85],"is":[10,58],"a":[11,92],"key":[12],"condition":[13,38],"to":[14,60,67,73],"judge":[15],"its":[16],"practicability.So":[17],"this":[18,76],"paper":[19],"discusses":[20],"if":[21],"will":[25],"appear":[26],"in":[27,33,50,88],"process":[29],"of":[30,40,55,78],"parameters":[31],"differentiate":[32],"grey":[34,93],"model,basing":[35],"on":[36],"number":[39],"matrix.Results":[41],"show":[42],"that":[43,82],"could":[47],"only":[48],"exist":[49,87],"GM(1,1)when":[51],"first":[53],"item":[54],"original":[56],"sequence":[57],"unequal":[59],"zero":[61,68],"while":[62],"other":[63],"items":[64],"are":[65],"equal":[66],"approximatively.Accordingly,there's":[69],"no":[70],"practical":[71],"meaning":[72],"predict":[74],"by":[75],"kind":[77],"sequence.Consequently,it":[79],"also":[80],"proves":[81],"doesn't":[86],"GM(1,1)":[89],"when":[90],"making":[91],"prediction.":[94]},"counts_by_year":[{"year":2019,"cited_by_count":3},{"year":2017,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2013,"cited_by_count":2},{"year":2012,"cited_by_count":1}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}