Search Results for author: Gregor Cerar

Found 13 papers, 1 papers with code

Dealing with zero-inflated data: achieving SOTA with a two-fold machine learning approach

no code implementations12 Oct 2023 Jože M. Rožanec, Gašper Petelin, João Costa, Blaž Bertalanič, Gregor Cerar, Marko Guček, Gregor Papa, Dunja Mladenić

This paper showcases two real-world use cases (home appliances classification and airport shuttle demand prediction) where a hierarchical model applied in the context of zero-inflated data leads to excellent results.

Deep Feature Learning for Wireless Spectrum Data

no code implementations7 Aug 2023 Ljupcho Milosheski, Gregor Cerar, Blaž Bertalanič, Carolina Fortuna, Mihael Mohorčič

In recent years, the traditional feature engineering process for training machine learning models is being automated by the feature extraction layers integrated in deep learning architectures.

Feature Engineering Representation Learning

Energy Efficient Deep Multi-Label ON/OFF Classification of Low Frequency Metered Home Appliances

1 code implementation18 Jul 2023 Anže Pirnat, Blaž Bertalanič, Gregor Cerar, Mihael Mohorčič, Carolina Fortuna

We also show a 12 percentage point performance advantage of the proposed DL based model over a random forest model and observe performance degradation with the increase of the number of devices in the household, namely with each additional 5 devices, the average performance degrades by approximately 7 percentage points.

energy management Management +2

XAI for Self-supervised Clustering of Wireless Spectrum Activity

no code implementations17 May 2023 Ljupcho Milosheski, Gregor Cerar, Blaž Bertalanič, Carolina Fortuna, Mihael Mohorčič

In this paper, we propose a methodology for explaining deep clustering, self-supervised learning architectures comprised of a representation learning part based on a Convolutional Neural Network (CNN) and a clustering part.

Clustering Deep Clustering +3

On-Premise Artificial Intelligence as a Service for Small and Medium Size Setups

no code implementations12 Oct 2022 Carolina Fortuna, Din Mušić, Gregor Cerar, Andrej Čampa, Panagiotis Kapsalis, Mihael Mohorčič

Artificial Intelligence (AI) technologies are moving from customized deployments in specific domains towards generic solutions horizontally permeating vertical domains and industries.

Resource-aware Deep Learning for Wireless Fingerprinting Localization

no code implementations12 Oct 2022 Gregor Cerar, Blaž Bertalanič, Carolina Fortuna

Location based services, already popular with end users, are now inevitably becoming part of new wireless infrastructures and emerging business processes.

Self-supervised Learning for Clustering of Wireless Spectrum Activity

no code implementations22 Sep 2022 Ljupcho Milosheski, Gregor Cerar, Blaž Bertalanič, Carolina Fortuna, Mihael Mohorčič

In particular, we compare the performance of two SSL models, one based on a reference DeepCluster architecture and one adapted for spectrum activity identification and clustering, and a baseline model based on K-means clustering algorithm.

Anomaly Detection Clustering +1

On Designing Data Models for Energy Feature Stores

no code implementations9 May 2022 Gregor Cerar, Blaž Bertalanič, Anže Pirnat, Andrej Čampa, Carolina Fortuna

We first propose a taxonomy for designing data models suitable for energy applications, explain how this model can support the design of features and their subsequent management by specialized feature stores.

Feature Engineering Management +2

Towards Sustainable Deep Learning for Wireless Fingerprinting Localization

no code implementations22 Jan 2022 Anže Pirnat, Blaž Bertalanič, Gregor Cerar, Mihael Mohorčič, Marko Meža, Carolina Fortuna

A detailed performance evaluation shows that the proposed model producesonly 58 % of the carbon footprint while maintaining 98. 7 % of the overall performance compared to state of the art model external to our group.

Indoor Localization

Learning to Fairly Classify the Quality of Wireless Links

no code implementations23 Feb 2021 Gregor Cerar, Halil Yetgin, Mihael Mohorčič, Carolina Fortuna

Machine learning (ML) has been used to develop increasingly accurate link quality estimators for wireless networks.

Fairness feature selection

Improving CSI-based Massive MIMO Indoor Positioning using Convolutional Neural Network

no code implementations5 Feb 2021 Gregor Cerar, Aleš Švigelj, Mihael Mohorčič, Carolina Fortuna, Tomaž Javornik

Multiple-input multiple-output (MIMO) is an enabling technology to meet the growing demand for faster and more reliable communications in wireless networks with a large number of terminals, but it can also be applied for position estimation of a terminal exploiting multipath propagation from multiple antennas.

Position

Learning to Detect Anomalous Wireless Links in IoT Networks

no code implementations12 Aug 2020 Gregor Cerar, Halil Yetgin, Blaž Bertalanič, Carolina Fortuna

After decades of research, the Internet of Things (IoT) is finally permeating real-life and helps improve the efficiency of infrastructures and processes as well as our health.

Anomaly Detection

Machine Learning for Wireless Link Quality Estimation: A Survey

no code implementations7 Dec 2018 Gregor Cerar, Halil Yetgin, Mihael Mohorčič, Carolina Fortuna

The analysis of the rich body of existing literature on link quality estimation using models developed from data traces indicates that the techniques used for modeling link quality estimation are becoming increasingly sophisticated.

BIG-bench Machine Learning Feature Engineering +1

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