Results 101 to 110 of about 35,760 (258)

Prospective Portfolio Optimization With Asset Preselection Using a Combination of Long and Short Term Memory and Sharpe Ratio Maximization

IEEE Access
This research presents a novel portfolio optimization model that incorporates asset preselection. This model aims to demonstrate how using Long and Short-Term Memory and Sharpe Ratio Maximization can enhance the efficiency of portfolios.The suggested ...
Farshid Abdi, Shaghayegh Abolmakarem, Amir Karbassi Yazdi, Yong Tan, Italo Andres Marchioni Choque   +4 more
doaj   +1 more source

Computing observation vectors for Max-Fault Min-Cardinality diagnoses

, 2008
Model-Based Diagnosis (MBD) typically focuses on diag-noses, minimal under some minimality criterion, e.g., the minimal-cardinality set of faulty components that explain an observation α.
Arjan Van Gemund, Alexander Feldman, Gregory Provan   +2 more
core  

Cardinality and the Simplex Tableau for the Set Partitioning Problem

In this work, we show how cardinality-related information for the set partitioning problem is represented within the simplex tableau and how a fractional solution can be interpreted in terms of unresolved solution cardinality.
Joseph, Anito, Baker, Edward K, Edward K. Baker, Anito Joseph   +3 more
core   +1 more source

Horn cardinality rules

, 2018
: "We address the problem of finding a 'tight' representation of Horn cardinality rules in a mixed integer programming model by describing a convex hull of it. A cardinality Horn rule asserts that if at least k of the propositions AΓéü,...,A[subscript m]
John N. Hooker (5357795), Hong Yan (5406551), Carnegie Mellon University.Engineering Design Research Center. (5047289)   +2 more
core   +1 more source

Lasso for hierarchical polynomial models

Canadian Journal of Statistics, EarlyView.
Abstract The divisibility conditions implicit in a polynomial hierarchy suggest parameter constraints in regression. With this idea, we establish strong and weak hierarchies for both the lasso and relaxed lasso. Our proposal extends prior work on hierarchical lasso, which was mainly concerned with models of degree 2.
H. Maruri‐Aguilar, S. Lunagómez
wiley   +1 more source

Cardinality and ordinality in Menger'framework

, 2008
Cardinality and ordinality in Menger ...
Livet, Pierre
core  

Estimation of the support’s cardinality.

, 2015
Estimation of the support set cardinality (before and after pruning).
Nihat Ay (415559), Guido Montúfar (790927), Keyan Ghazi-Zahedi (790928)   +2 more
core   +1 more source

Learning sparse mixture‐of‐experts generalized linear models in ultrahigh dimensions

Canadian Journal of Statistics, EarlyView.
Abstract Motivated by the challenges of heterogeneity and high dimensionality in the analysis of modern data, we investigate continuous regularization methods for learning sparse mixture‐of‐experts generalized linear models (MoE‐GLM). Although there are foundational results about regularized estimators in a broad class of regression models including ...
Pengqi Liu, Abbas Khalili
wiley   +1 more source

The number of (0,1) - Matrices with fixed row and column sums [PDF]

, 2013
Let R and S be non-negative and non-increasing vectors of order m and n respectively. We consider the set A(R, S) of all m x n matrices with entries restricted to {0, 1}.
Pule, Solomone Tahamano
core  

KIF1A‐Mediated Axonal Transport of Netrin‐1 in iPSC‐Derived Human Forebrain Neurons

Cytoskeleton, EarlyView.
ABSTRACT Netrin‐1 is a secreted laminin‐like protein that functions as a guidance cue for axon pathfinding in development. Netrin‐1 also modulates synapse formation in developing neurons and long‐term potentiation in mature neurons. Netrin‐1 is expressed in human neurons; however, its intracellular distribution and trafficking have not been assessed ...
T. Y. Leung, J. Sidhu, A. Hsieh, Y. Ma, J. Liu, M. A. Silverman   +5 more
wiley   +1 more source