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The convergence properties of the proposed method and an accelerated variant of this method are provided. The main features of this method are its ability to accelerate the rate of convergence by adjusting the steplength, to provide a second derivative of the observed-data log-likelihood function using only the functions used in the proposed method, and the ability to avoid having to explicitly solve the first derivative of the object function. Four examples are presented to demonstrate how the proposed method converges compared with the EM algorithm and its variants. The computing time is also compared.<\/jats:p>","DOI":"10.1007\/s11222-020-09923-z","type":"journal-article","created":{"date-parts":[[2020,2,5]],"date-time":"2020-02-05T15:03:38Z","timestamp":1580915018000},"page":"871-886","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Incomplete-data Fisher scoring method with steplength adjustment"],"prefix":"10.1007","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1368-8177","authenticated-orcid":false,"given":"Keiji","family":"Takai","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2020,2,5]]},"reference":[{"issue":"2","key":"9923_CR1","doi-asserted-by":"publisher","first-page":"247","DOI":"10.1007\/BF02294019","volume":"48","author":"PM Bentler","year":"1983","unstructured":"Bentler, P.M., Tanaka, J.S.: Problems with EM algorithms for ML factor analysis. 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