Results 31 to 40 of about 970,162 (283)
Sparse Approximations with Interior Point Methods
SIAM Review, 2022 Large-scale optimization problems that seek sparse solutions have become ubiquitous. They are routinely solved with various specialized first-order methods. Although such methods are often fast, they usually struggle with not-so-well conditioned problems.
Valentina De Simone +4 more
openaire +5 more sources
A new non-monotonic infeasible simplex-type algorithm for Linear Programming [PDF]
PeerJ Computer Science, 2020 This paper presents a new simplex-type algorithm for Linear Programming with the following two main characteristics: (i) the algorithm computes basic solutions which are neither primal or dual feasible, nor monotonically improving and (ii) the sequence ...
Charalampos P. Triantafyllidis +1 more
doaj +2 more sources
Noise-Based Frequency Spectrum Correction Method Using Interior Point Approach
IEEE AccessThe spectral correction of noisy real sinusoidal signals is of critical importance; however, the presence of spectral leakage and noise introduces significant challenges.
Guichun Yang +6 more
doaj +1 more source
A Multi-Objective Optimization Framework for Joint Inversion
AIMS Geosciences, 2016 Different geophysical data sets such as receiver functions, surface wave dispersion measurements, and first arrival travel times, provide complementary information about the Earth structure.
Aaron A. Velasco +2 more
doaj +1 more source
Modified Interior-Point Method for Large-and-Sparse Low-Rank Semidefinite Programs
, 2017 Semidefinite programs (SDPs) are powerful theoretical tools that have been studied for over two decades, but their practical use remains limited due to computational difficulties in solving large-scale, realistic-sized problems.
Lavaei, Javad, Zhang, Richard Y.
core +1 more source
Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
wiley +1 more source
Improving complexity of Karmarkar's approach for linear programming
Journal of Numerical Analysis and Approximation Theory, 2014 In this paper, we are interested in the performance of Karmarkar's projective algorithm for linear programming. Based on the work of Schrijver, we offer a new displacement step better than Schrijver's one which led to a moderate improvement in the ...
Djamel Benterki, Mousaab Bouafia
doaj +2 more sources
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS
FEBS Letters, EarlyView.We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka +11 more
wiley +1 more source
Matrix Scaling and Balancing via Box Constrained Newton's Method and Interior Point Methods
, 2017 In this paper, we study matrix scaling and balancing, which are fundamental problems in scientific computing, with a long line of work on them that dates back to the 1960s.
Cohen, Michael B. +3 more
core +1 more source