New interior-point approach for one- and two-class linear support vector machines using multiple variable splitting

Autor: Jordi Castro

© The Author(s) 2022. Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. Multiple variable splitting is a general technique for decomposing problems by using copies of variables and additional linking constraints th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b651cb4acda26fe4c60432b1d356096
https://hdl.handle.net/2117/386810

A specialized interior-point algorithm for huge minimum convex cost flows in bipartite networks

Autor: Jordi Castro, Stefano Nasini

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

© 2020 Elsevier The computation of the Newton direction is the most time consuming step of interior-point methods. This direction was efficiently computed by a combination of Cholesky factorizations and conjugate gradients in a specialized interior-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b76be25a68ad37b398bb76254d9d270
http://hdl.handle.net/2117/351220

Stabilized Benders methods for large-scale combinatorial optimization, with application to data privacy

Autor: Daniel Baena, Antonio Frangioni, Jordi Castro

Publikováno v: Management science 66 (2020): 3051–3068. doi:10.1287/mnsc.2019.3341
info:cnr-pdr/source/autori:Baena D.; Castro J.; Frangioni A./titolo:Stabilized benders methods for large-scale combinatorial optimization, with application to data privacy/doi:10.1287%2Fmnsc.2019.3341/rivista:Management science/anno:2020/pagina_da:3051/pagina_a:3068/intervallo_pagine:3051–3068/volume:66
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

The cell-suppression problem (CSP) is a very large mixed-integer linear problem arising in statistical disclosure control. However, CSP has the typical structure that allows application of the Benders decomposition, which is known to suffer from osci

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::352d7a5382f58ddde9fcb99e91952772
http://www-eio.upc.edu/~jcastro/publications/reports/dr2017-03.pdf

Symmetric vs Asymmetric Protection Levels in SDC Methods for Tabular Data

Autor: Daniel Baena, Jordi Castro, José González

Publikováno v: Privacy in Statistical Databases ISBN: 9783319997704
PSD

Protection levels on sensitive cells—which are key parameters of any statistical disclosure control method for tabular data—are related to the difficulty of any attacker to recompute a good estimation of the true cell values. Those protection lev

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6b6ce00275237b2da05bbb19fecbdfde
https://doi.org/10.1007/978-3-319-99771-1_1

Discovery of novel quaternary ammonium derivatives of (3 R )-quinuclidinyl amides as potent and long acting muscarinic antagonists

Autor: Maria Antonia Buil, Manuel Fuentes Ferrer, Sonia Espinosa, Francisca Antón, Jordi Castro, Josep M. Huerta, Jorge Beleta, Manuel López, Mònica Córdoba, Dolors Vilella, Montserrat Miralpeix, Gaspar Casals, Maria Prat, Victor Segarra, Maria Dolors Fernández, Hamish Ryder, Marisa González, Alvaro Cardenas, Juan Manuel Monleón, Israel Ramos, Laia Tort, Amadeu Gavaldà

Publikováno v: Bioorganic & Medicinal Chemistry Letters. 25:1736-1741

Novel quaternary ammonium derivatives of (3R)-quinuclidinyl amides have been identified as potent M3 muscarinic antagonists with a long duration of action in an in vivo model of bronchoconstriction. The synthesis, structure-activity relationships and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::430af71f81dd784dd8e3710b416eebc5
https://doi.org/10.1016/j.bmcl.2015.02.065