Search Results for author: Sašo Džeroski

Found 26 papers, 7 papers with code

Comparing Algorithm Selection Approaches on Black-Box Optimization Problems

no code implementations30 Jun 2023 Ana Kostovska, Anja Jankovic, Diederick Vermetten, Sašo Džeroski, Tome Eftimov, Carola Doerr

Performance complementarity of solvers available to tackle black-box optimization problems gives rise to the important task of algorithm selection (AS).

Algorithm Instance Footprint: Separating Easily Solvable and Challenging Problem Instances

no code implementations1 Jun 2023 Ana Nikolikj, Sašo Džeroski, Mario Andrés Muñoz, Carola Doerr, Peter Korošec, Tome Eftimov

In black-box optimization, it is essential to understand why an algorithm instance works on a set of problem instances while failing on others and provide explanations of its behavior.

Automated Scientific Discovery: From Equation Discovery to Autonomous Discovery Systems

no code implementations3 May 2023 Stefan Kramer, Mattia Cerrato, Sašo Džeroski, Ross King

The paper surveys automated scientific discovery, from equation discovery and symbolic regression to autonomous discovery systems and agents.

Astronomy Autonomous Driving +1

Efficient Generator of Mathematical Expressions for Symbolic Regression

1 code implementation20 Feb 2023 Sebastian Mežnar, Sašo Džeroski, Ljupčo Todorovski

We empirically show that HVAE can be trained efficiently with small corpora of mathematical expressions and can accurately encode expressions into a smooth low-dimensional latent space.

Evolutionary Algorithms regression +1

FAIRification of MLC data

no code implementations23 Nov 2022 Ana Kostovska, Jasmin Bogatinovski, Andrej Treven, Sašo Džeroski, Dragi Kocev, Panče Panov

The multi-label classification (MLC) task has increasingly been receiving interest from the machine learning (ML) community, as evidenced by the growing number of papers and methods that appear in the literature.

Benchmarking Management +1

Explainable Model-specific Algorithm Selection for Multi-Label Classification

no code implementations21 Nov 2022 Ana Kostovska, Carola Doerr, Sašo Džeroski, Dragi Kocev, Panče Panov, Tome Eftimov

To address this algorithm selection problem, we investigate in this work the quality of an automated approach that uses characteristics of the datasets - so-called features - and a trained algorithm selector to choose which algorithm to apply for a given task.

Classification Multi-Label Classification

Semi-supervised Predictive Clustering Trees for (Hierarchical) Multi-label Classification

no code implementations19 Jul 2022 Jurica Levatić, Michelangelo Ceci, Dragi Kocev, Sašo Džeroski

Semi-supervised learning (SSL) is a common approach to learning predictive models using not only labeled examples, but also unlabeled examples.

Classification Clustering +3

The Importance of Landscape Features for Performance Prediction of Modular CMA-ES Variants

1 code implementation15 Apr 2022 Ana Kostovska, Diederick Vermetten, Sašo Džeroski, Carola Doerr, Peter Korošec, Tome Eftimov

In addition, we have shown that by using classifiers that take the features relevance on the model accuracy, we are able to predict the status of individual modules in the CMA-ES configurations.

regression

OPTION: OPTImization Algorithm Benchmarking ONtology

no code implementations24 Apr 2021 Ana Kostovska, Diederick Vermetten, Carola Doerr, Sašo Džeroski, Panče Panov, Tome Eftimov

Many platforms for benchmarking optimization algorithms offer users the possibility of sharing their experimental data with the purpose of promoting reproducible and reusable research.

Benchmarking Data Integration

Comprehensive Comparative Study of Multi-Label Classification Methods

no code implementations14 Feb 2021 Jasmin Bogatinovski, Ljupčo Todorovski, Sašo Džeroski, Dragi Kocev

Several studies provide reviews of methods and datasets for MLC and a few provide empirical comparisons of MLC methods.

Classification General Classification +1

ReliefE: Feature Ranking in High-dimensional Spaces via Manifold Embeddings

1 code implementation23 Jan 2021 Blaž Škrlj, Sašo Džeroski, Nada Lavrač, Matej Petković

The utility of ReliefE for high-dimensional data sets is ensured by its implementation that utilizes sparse matrix algebraic operations.

Multi-Label Classification Vocal Bursts Intensity Prediction

Probabilistic Grammars for Equation Discovery

1 code implementation1 Dec 2020 Jure Brence, Ljupčo Todorovski, Sašo Džeroski

Equation discovery, also known as symbolic regression, is a type of automated modeling that discovers scientific laws, expressed in the form of equations, from observed data and expert knowledge.

Symbolic Regression

Ensemble- and Distance-Based Feature Ranking for Unsupervised Learning

1 code implementation23 Nov 2020 Matej Petković, Dragi Kocev, Blaž Škrlj, Sašo Džeroski

In this work, we propose two novel (groups of) methods for unsupervised feature ranking and selection.

Clustering

Feature Ranking for Semi-supervised Learning

no code implementations10 Aug 2020 Matej Petković, Sašo Džeroski, Dragi Kocev

This poses a variety of challenges for the existing machine learning methods: coping with dataset with a large number of examples that are described in a high-dimensional space and not all examples have labels provided.

Classification General Classification +3

Feature Importance Estimation with Self-Attention Networks

no code implementations11 Feb 2020 Blaž Škrlj, Sašo Džeroski, Nada Lavrač, Matej Petkovič

Black-box neural network models are widely used in industry and science, yet are hard to understand and interpret.

Feature Importance

Equation Discovery for Nonlinear System Identification

no code implementations1 Jul 2019 Nikola Simidjievski, Ljupčo Todorovski, Juš Kocijan, Sašo Džeroski

In this paper, recent developments of the equation discovery method called process-based modeling, suited for nonlinear system identification, are elaborated and illustrated on two continuous-time case studies.

Using Redescription Mining to Relate Clinical and Biological Characteristics of Cognitively Impaired and Alzheimer's Disease Patients

no code implementations20 Feb 2017 Matej Mihelčić, Goran Šimić, Mirjana Babić Leko, Nada Lavrač, Sašo Džeroski, Tomislav Šmuc

However, in some instances, as with the attributes: testosterone, the imaging attribute Spatial Pattern of Abnormalities for Recognition of Early AD, as well as the levels of leptin and angiopoietin-2 in plasma, we corroborated previously debatable findings or provided additional information about these variables and their association with AD pathogenesis.

Attribute

A framework for redescription set construction

no code implementations13 Jun 2016 Matej Mihelčić, Sašo Džeroski, Nada Lavrač, Tomislav Šmuc

In contrast to previous approaches that typically create one smaller set of redescriptions satisfying a pre-defined set of constraints, we introduce a framework that creates large and heterogeneous redescription set from which user/expert can extract compact sets of differing properties, according to its own preferences.

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