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pro vyhledávání: '"Lee, Hwangrae"'
Multivariate time series data for real-world applications typically contain a significant amount of missing values. The dominant approach for classification with such missing values is to impute them heuristically with specific values (zero, mean, va
Externí odkaz:
http://arxiv.org/abs/2308.06738
Autor:
Lee, Hwangrae
We bound the tensor ranks of elementary symmetric polynomials, and we give explicit decompositions into powers of linear forms. The bound is attained when the degree is odd.
Comment: 8 pages
Comment: 8 pages
Externí odkaz:
http://arxiv.org/abs/1508.05235
Autor:
Lee, Hwangrae, Sturmfels, Bernd
The multiple root loci among univariate polynomials of degree $n$ are indexed by partitions of $n$. We study these loci and their conormal varieties. The projectively dual varieties are joins of such loci where the partitions are hooks. Our emphasis
Externí odkaz:
http://arxiv.org/abs/1508.00202
Autor:
Lee, Hwangrae
Finding the point in an algebraic variety that is closest to a given point is an optimization problem with many applications. We study the case when the variety is a Fermat hypersurface. Our formula for its Euclidean distance degree is a piecewise po
Externí odkaz:
http://arxiv.org/abs/1409.0684
Autor:
Lee, Hwangrae
Publikováno v:
In Journal of Symbolic Computation May-June 2017 80 Part 2:502-510
Autor:
Lee, Hwangrae
Publikováno v:
In Linear Algebra and Its Applications 1 March 2016 492:89-97
Autor:
Lee, Hwangrae, Sturmfels, Bernd
Publikováno v:
In Journal of Algebra 15 January 2016 446:499-526