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18,081
Maximum likelihood from incomplete data via the EM algorithm
 JOURNAL OF THE ROYAL STATISTICAL SOCIETY, SERIES B
, 1977
"... A broadly applicable algorithm for computing maximum likelihood estimates from incomplete data is presented at various levels of generality. Theory showing the monotone behaviour of the likelihood and convergence of the algorithm is derived. Many examples are sketched, including missing value situat ..."
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Cited by 11972 (17 self)
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situations, applications to grouped, censored or truncated data, finite mixture models, variance component estimation, hyperparameter estimation, iteratively reweighted least squares and factor analysis.
FINITE NONSOLVABLE GROUPS WITH MANY DISTINCT CHARACTER DEGREES
"... Abstract. Let G be a finite group and let Irr(G) denote the set of all complex irreducible characters of G. Let cd(G) be the set of all character degrees of G. For a degree d ∈ cd(G), the multiplicity of d in G, denoted by mG(d), is the number of irreducible characters of G having degree d. A finite ..."
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finite group G is said to be a Tkgroup for some integer k ≥ 1 if there exists a nontrivial degree d0 ∈ cd(G) such that mG(d0) = k and that for every d ∈ cd(G) − {1, d0}, the multiplicity of d in G is trivial, that is, mG(d) = 1. In this paper, we show that if G is a nonsolvable Tkgroup for some
Character degree sums in finite nonsolvable groups
 J. Group Theory
"... Abstract. Let N be a minimal normal nonabelian subgroup of a finite group G. We will show that there exists a nontrivial irreducible character of N of degree at least 5 which is extendible to G. This result will be used to settle two open questions raised by Berkovich and Mann, and Berkovich and Zhm ..."
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Cited by 3 (0 self)
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Abstract. Let N be a minimal normal nonabelian subgroup of a finite group G. We will show that there exists a nontrivial irreducible character of N of degree at least 5 which is extendible to G. This result will be used to settle two open questions raised by Berkovich and Mann, and Berkovich
Panel Cointegration; Asymptotic and Finite Sample Properties of Pooled Time Series Tests, With an Application to the PPP Hypothesis; New Results. Working paper
, 1997
"... We examine properties of residualbased tests for the null of no cointegration for dynamic panels in which both the shortrun dynamics and the longrun slope coefficients are permitted to be heterogeneous across individual members of the panel+ The tests also allow for individual heterogeneous fixed ..."
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Cited by 529 (13 self)
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fixed effects and trend terms, and we consider both pooled within dimension tests and group mean between dimension tests+ We derive limiting distributions for these and show that they are normal and free of nuisance parameters+ We also provide Monte Carlo evidence to demonstrate their small sample size
The complexity of the equivalence problem for nonsolvable groups
 Bull. London Math. Society
, 2007
"... The equivalence problem for a group G is the problem of deciding which equations hold in G. It is known that for finite nilpotent groups and certain other solvable groups, the equivalence problem has polynomialtime complexity. We prove that the equivalence problem for a finite nonsolvable group G i ..."
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Cited by 3 (0 self)
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The equivalence problem for a group G is the problem of deciding which equations hold in G. It is known that for finite nilpotent groups and certain other solvable groups, the equivalence problem has polynomialtime complexity. We prove that the equivalence problem for a finite nonsolvable group G
Model checking and abstraction
 ACM Transactions on Programming Languages and Systems
, 1994
"... software developers are using the Java language as the language of choice on many applications. This is due to the effective use of the objectoriented (OO) paradigm to develop large software projects and the ability of the Java language to support the increasing use of web technologies in business ..."
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Cited by 742 (55 self)
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class written in Java into one of a finite set of groups. A detailed description on how we enumerated all the possible groups of Java classes is also provided. Using TaxTOOLJ (a Taxonomy Tool for the ObjectOriented Language Java) we cataloged over 155k classes from a crosssection of Java applications
On finite simple and nonsolvable groups acting on homology 4spheres
, 2005
"... Abstract. The only finite nonabelian simple group acting on a homology 3spherenecessarily nonfreely is the dodecahedral group A5 ∼ = PSL(2, 5) (in analogy, the only finite perfect group acting freely on a homology 3sphere is the binary dodecahedral group A ∗ 5 ∼ = SL(2, 5)). In the present pa ..."
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Cited by 14 (5 self)
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paper we show that the only finite simple groups acting on a homology 4sphere, and in particular on the 4sphere, are the alternating or linear fractional groups groups A5 ∼ = PSL(2, 5) and A6 ∼ = PSL(2, 9). From this we deduce a short list of groups which contains all finite nonsolvable groups
On finite simple and nonsolvable groups acting on closed 4manifolds
, 803
"... Abstract. We show that the only finite nonabelian simple groups which admit a locally linear, homologically trivial action on a closed simply connected 4manifold M (or on a 4manifold with trivial first homology) are the alternating groups A5, A6 and the linear fractional group PSL(2, 7) (we note t ..."
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Cited by 2 (1 self)
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is A5, and then give a short list of finite nonsolvable groups which contains all candidates for actions of such groups. 1.
ON THE CLASSIFICATION OF FINITE GROUPS ACTING ON HOMOLOGY 3SPHERES
"... In previous work we showed that the only finite nonabelian simple group acting by diffeomorphisms on a homology 3sphere is the alternating or dodecahedral group A5. Here we characterize finite nonsolvable groups that act on a homology 3sphere preserving orientation. We find exactly the finite nons ..."
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Cited by 12 (11 self)
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In previous work we showed that the only finite nonabelian simple group acting by diffeomorphisms on a homology 3sphere is the alternating or dodecahedral group A5. Here we characterize finite nonsolvable groups that act on a homology 3sphere preserving orientation. We find exactly the finite
Results 1  10
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18,081