Khue-Dung Dang, Louise M Ryan, Richard J Cook, Tugba Akkaya Hocagil, Sandra W Jacobson, Joseph L Jacobson
{"title":"Bayesian outcome selection modeling.","authors":"Khue-Dung Dang, Louise M Ryan, Richard J Cook, Tugba Akkaya Hocagil, Sandra W Jacobson, Joseph L Jacobson","doi":"10.1002/sta4.568","DOIUrl":"10.1002/sta4.568","url":null,"abstract":"<p><p>In psychiatric and social epidemiology studies, it is common to measure multiple different outcomes using a comprehensive battery of tests thought to be related to an underlying construct of interest. In the research that motivates our work, researchers wanted to assess the impact of in utero alcohol exposure on child cognition and neuropsychological development, which are evaluated using a range of different psychometric tests. Statistical analysis of the resulting multiple outcomes data can be challenging, because the outcomes measured on the same individual are not independent. Moreover, it is unclear, a priori, which outcomes are impacted by the exposure under study. While researchers will typically have some hypotheses about which outcomes are important, a framework is needed to help identify outcomes that are sensitive to the exposure and to quantify the associated treatment or exposure effects of interest. We propose such a framework using a modification of stochastic search variable selection, a popular Bayesian variable selection model and use it to quantify an overall effect of the exposure on the affected outcomes. The performance of the method is investigated empirically and an illustration is given through application using data from our motivating study.</p>","PeriodicalId":54381,"journal":{"name":"Lms Journal of Computation and Mathematics","volume":"5 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10653254/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85687704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Relative Consistency of the Axiom of Choice Mechanized Using Isabelle⁄zf","authors":"Lawrence Charles Paulson","doi":"10.1112/S1461157000000449","DOIUrl":"https://doi.org/10.1112/S1461157000000449","url":null,"abstract":"The proof of the relative consistency of the axiom of choice has been mechanized using Isabelle⁄ZF, building on a previous mechanization of the reflection theorem. The heavy reliance on metatheory in the original proof makes the formalization unusually long, and not entirely satisfactory: two parts of the proof do not fit together. It seems impossible to solve these problems without formalizing the metatheory. However, the present development follows a standard textbook, Kenneth Kunen's Set theory: an introduction to independence proofs , and could support the formalization of further material from that book. It also serves as an example of what to expect when deep mathematics is formalized.","PeriodicalId":54381,"journal":{"name":"Lms Journal of Computation and Mathematics","volume":"6 1","pages":"198-248"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1112/S1461157000000449","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46219430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Linear Programming Relaxation Permutation Symmetry Group of an Orthogonal Array Defining Integer Linear Program","authors":"David M. Arquette, D. Bulutoglu","doi":"10.1112/S1461157016000085","DOIUrl":"https://doi.org/10.1112/S1461157016000085","url":null,"abstract":"There is always a natural embedding of $S_{s}wr S_{k}$\u0000 into the linear programming (LP) relaxation permutation symmetry group of an orthogonal array integer linear programming (ILP) formulation with equality constraints. The point of this paper is to prove that in the $2$\u0000 -level, strength- $1$\u0000 case the LP relaxation permutation symmetry group of this formulation is isomorphic to $S_{2}wr S_{k}$\u0000 for all $k$\u0000 , and in the $2$\u0000 -level, strength- $2$\u0000 case it is isomorphic to $S_{2}^{k}rtimes S_{k+1}$\u0000 for $kgeqslant 4$\u0000 . The strength- $2$\u0000 result reveals previously unknown permutation symmetries that cannot be captured by the natural embedding of $S_{2}wr S_{k}$\u0000 . We also conjecture a complete characterization of the LP relaxation permutation symmetry group of the ILP formulation. Supplementary materials are available with this article.","PeriodicalId":54381,"journal":{"name":"Lms Journal of Computation and Mathematics","volume":"19 1","pages":"206-216"},"PeriodicalIF":0.0,"publicationDate":"2021-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1112/S1461157016000085","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43223161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Lens Spaces, Isospectral on Forms but not on Functions","authors":"Ruth Gornet, J. McGowan","doi":"10.1112/S1461157000001273","DOIUrl":"https://doi.org/10.1112/S1461157000001273","url":null,"abstract":"This paper means to correct an error by the authors for the composite $q$ case in the paper \"Lens Spaces, Isospectral on Forms but not on Functions\", published in LMS J. Comput. Math.} 9 (2006), 270-286. All calculations and examples presented in cite{GM} for prime $q$ remain valid, and we include detailed calculations below justifying this. Our original mistake was to conclude that Formula (3.11) cite[p. 399]{Ikeda} remained true for all $q$ when in fact it is only valid if $q$ is prime. This means formulas (3) and (4) in cite{GM} must be reworked to account for complications when $q$ is composite.","PeriodicalId":54381,"journal":{"name":"Lms Journal of Computation and Mathematics","volume":"9 1","pages":"270-286"},"PeriodicalIF":0.0,"publicationDate":"2019-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44009357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A generalized scheme based on shifted Jacobi polynomials for numerical simulation of coupled systems of multi-term fractional-order partial differential equations","authors":"K. Shah, H. Khalil, R. Khan","doi":"10.1112/S146115701700002X","DOIUrl":"https://doi.org/10.1112/S146115701700002X","url":null,"abstract":"Due to the increasing application of fractional calculus in engineering and biomedical processes, we analyze a new method for the numerical simulation of a large class of coupled systems of fractional-order partial differential equations. In this paper, we study shifted Jacobi polynomials in the case of two variables and develop some new operational matrices of fractional-order integrations as well as fractional-order differentiations. By the use of these operational matrices, we present a new and easy method for solving a generalized class of coupled systems of fractional-order partial differential equations subject to some initial conditions. We convert the system under consideration to a system of easily solvable algebraic equation without discretizing the system, and obtain a highly accurate solution. Also, the proposed method is compared with some other well-known differential transform methods. The proposed method is computer oriented. We use MatLab to perform the necessary calculation. The next two parts will appear soon.","PeriodicalId":54381,"journal":{"name":"Lms Journal of Computation and Mathematics","volume":"20 1","pages":"11-29"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1112/S146115701700002X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63412372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Schwarzian equation for completely replicable functions","authors":"Abdelkrim El Basraoui, J. McKay","doi":"10.1112/S1461157017000031","DOIUrl":"https://doi.org/10.1112/S1461157017000031","url":null,"abstract":"We describe the Schwarzian equations for the 328 completely replicable functions with integral $q$ -coefficients [Ford et al. , ‘More on replicable functions’, Comm. Algebra 22 (1994) no. 13, 5175–5193].","PeriodicalId":54381,"journal":{"name":"Lms Journal of Computation and Mathematics","volume":"20 1","pages":"30-52"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1112/S1461157017000031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63412430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Treatment for third-order nonlinear differential equations based on the Adomian decomposition method","authors":"Xueqin Lv, Jianfang Gao","doi":"10.1112/S1461157017000018","DOIUrl":"https://doi.org/10.1112/S1461157017000018","url":null,"abstract":"The Adomian decomposition method (ADM) is an efficient method for solving linear and nonlinear ordinary differential equations, differential algebraic equations, partial differential equations, stochastic differential equations, and integral equations. Based on the ADM, a new analytical and numerical treatment is introduced in this research for third-order boundary-value problems. The effectiveness of the proposed approach is verified by numerical examples.","PeriodicalId":54381,"journal":{"name":"Lms Journal of Computation and Mathematics","volume":"20 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1112/S1461157017000018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63412360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On the zeros of Dirichlet $L$ -functions – RETRACTION","authors":"Sami Omar, Raouf Ouni, Kamel Mazhouda","doi":"10.1112/S1461157018000013","DOIUrl":"https://doi.org/10.1112/S1461157018000013","url":null,"abstract":"On the zeros of Dirichlet L-functions – RETRACTION Sami Omar, Raouf Ouni and Kamel Mazhouda (LMS J. Comput. Math. 14 (2011) 140–154) This paper [1], which was published online on 1 June 2011, has been retracted by agreement between the authors, the journal’s Editor-in-Chief Derek Holt, the London Mathematical Society and Cambridge University Press. The retraction was agreed to prevent other authors from using incorrect mathematical results.","PeriodicalId":54381,"journal":{"name":"Lms Journal of Computation and Mathematics","volume":"20 1","pages":"53-53"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1112/S1461157018000013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63412442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Finding 47:23 in the Baby Monster","authors":"J. Bray, R. Parker, R. Wilson","doi":"10.1112/S1461157016000024","DOIUrl":"https://doi.org/10.1112/S1461157016000024","url":null,"abstract":"In this paper we describe methods for finding very small maximal subgroups of very large groups, with particular application to the subgroup 47:23 of the Baby Monster. This example is completely intractable by standard or naive methods. The example of finding 31:15 inside the Thompson group $text{Th}$\u0000 is also discussed as a test case.","PeriodicalId":54381,"journal":{"name":"Lms Journal of Computation and Mathematics","volume":"19 1","pages":"229-234"},"PeriodicalIF":0.0,"publicationDate":"2016-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1112/S1461157016000024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63412420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
David Harvey, Maike Massierer, Andrew V. Sutherland
{"title":"Computing -series of geometrically hyperelliptic curves of genus three","authors":"David Harvey, Maike Massierer, Andrew V. Sutherland","doi":"10.1112/S1461157016000383","DOIUrl":"https://doi.org/10.1112/S1461157016000383","url":null,"abstract":"Let C/Q be a curve of genus three, given as a double cover of a plane conic. Such a curve is hyperelliptic over the algebraic closure of Q, but may not have a hyperelliptic model of the usual form over Q. We describe an algorithm that computes the local zeta functions of C at all odd primes of good reduction up to a prescribed bound N. The algorithm relies on an adaptation of the \"accumulating remainder tree\" to matrices with entries in a quadratic field. We report on an implementation, and compare its performance to previous algorithms for the ordinary hyperelliptic case.","PeriodicalId":54381,"journal":{"name":"Lms Journal of Computation and Mathematics","volume":"19 1","pages":"220-234"},"PeriodicalIF":0.0,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1112/S1461157016000383","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"63412284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}