186 citations · 964 across the 27 of their papers we have counts for
27 papers
Hybrid Inflation in Quasi-minimal Supergravity with Monotonic Inflationary Potentia
C. Panagiotakopoulos
We show how supersymmetric hybrid inflation with scalar spectral index is realized in the context of quasi-minimal supergravity if we insist that the…
Axion, mu Term, and Supersymmetric Hybrid Inflation
G. Lazarides, C. Panagiotakopoulos, Q. Shafi
We show how successful supersymmetric hybrid inflation is realized in realistic models where the resolution of the minimal supersymmetric standard model mu problem is intimately li…
Double hybrid inflation and gravitational waves
G. Lazarides, C. Panagiotakopoulos
A double hybrid inflationary scenario in non-minimal supergravity which can predict values of the tensor-to-scalar ratio up to about 0.05 is presented. Larger values of this ratio…
Gravitational Waves from Double Hybrid Inflation
G. Lazarides, C. Panagiotakopoulos
We present a two stage hybrid inflationary scenario in non-minimal supergravity which can predict values of the tensor-to-scalar ratio of the order of few times 0.01. For the param…
The Stochastic Gradient Descent for the Primal L1-SVM Optimization Revisited
Constantinos Panagiotakopoulos, Petroula Tsampouka
We reconsider the stochastic (sub)gradient approach to the unconstrained primal L1-SVM optimization. We observe that if the learning rate is inversely proportional to the number of…
The Role of Weight Shrinking in Large Margin Perceptron Learning
Constantinos Panagiotakopoulos, Petroula Tsampouka
We introduce into the classical perceptron algorithm with margin a mechanism that shrinks the current weight vector as a first step of the update. If the shrinking factor is consta…