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Listar por autor "Nowak, Ivo"
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On an OptLearn implementation using collaborative filtering.
Fuster López, Alejandro; Guerrero-García, Pablo; Hendrix, Eligius María Theodorus
; Martínez-Cruz, Jesús
; Nowak, Ivo (2023)
The aim of the iMath project is to develop a recommender system where a student is recommended a next question or literature in a learning platform MathE. This paper describes the systems developed based on collaborative ... -
On conceptualisation and an overview of learning path recommender systems in e-learning.
Fuster López, Alejandro; Martínez-Cruz, Jesús; Guerrero-García, Pablo
; Hendrix, Eligius María Theodorus
; Košir, Andrej; Nowak, Ivo; Oneto, Luca; Sirmakessis, Spiros; Pacheco, Maria Fátima; Fernandes, Florbela Pires; Pereira, Ana Isabel[et al.] (2024-06-10)
The use of e-learning systems has a long tradition, where students can study online helped by a system. In this context, the use of recommender systems is relatively new. In our research project, we investigated various ... -
On decomposition and multiobjective-based column and disjunctive cut generation for MINLP.
Muts, Pavlo; Nowak, Ivo; Hendrix, Eligius María Theodorus(Springer Nature, 2020)
Most industrial optimization problems are sparse and can be formulated as block- separable mixed-integer nonlinear programming (MINLP) problems, defined by linking low-dimensional sub-problems by (linear) coupling constraints. ... -
On Optimizing Ensemble Models using Column Generation.
Aziz, Vanya; Wu, Ouyang; Nowak, Ivo; Hendrix, Eligius María Theodorus; Kronqvist, Jan (Springer Nature, 2024-02-22)
In recent years, an interest appeared in integrating various optimization algorithms in machine learning. We study the potential of ensemble learning in classification tasks and how to efficiently decompose the underlying ... -
The decomposition-based outer approximation algorithm for convex mixed-integer nonlinear programming.
Muts, Pavlo; Nowak, Ivo; Hendrix, Eligius María Theodorus(Springer Nature, 2020)
This paper presents a new two-phase method for solving convex mixed-integer nonlinear programming (MINLP) problems, called Decomposition-based Outer Approximation Algo- rithm (DECOA). In the first phase, a sequence of ...