We investigate several ways to improve the performance of sparse LU factorization with
partial pivoting, as used to solve unsymmetric linear systems. We introduce the notion of …

In this paper, the role of elimination trees in the direct solution of large sparse linear systems
is examined. The notion of elimination trees is described and its relation to sparse Cholesky …

Over the past fifteen years, the implementation of the minimum degree algorithm has
received much study, and many important enhancements have been made to it. This paper …

This paper presents an overview of the multifrontal method for the solution of large sparse
symmetric positive definite linear systems. The method is formulated in terms of frontal matrices…

We present a linkable spontaneously anonymous group (LSAG) signature scheme (alternatively
known as linkable ring signature scheme) satisfying the following three properties. (1) …

The most widely used ordering scheme to reduce fills and operations in sparse matrix
computation is the minimum-degree algorithm. The notion of multiple elimination is introduced …

Background Chronic obstructive pulmonary disease (COPD) is a disease of irreversible airways
obstruction in which patients often suffer exacerbations. Sometimes these exacerbations …

Big data, because it can mine new knowledge for economic growth and technical innovation,
has recently received considerable attention, and many research efforts have been …

Publication and other forms of selection biases pose a threat to the validity of meta-analysis.
Funnel plots are usually used to detect such biases; asymmetrical plots are interpreted to …

Genetic amplification, mutation, and translocation are known to play a causal role in the
upregulation of an oncogene in cancer cells. Here, we report an emerging role of microRNA, the …