Search Results for author: Petko Valtchev

Found 8 papers, 4 papers with code

A Rule Mining-Based Advanced Persistent Threats Detection System

1 code implementation20 May 2021 Sidahmed Benabderrahmane, Ghita Berrada, James Cheney, Petko Valtchev

Advanced persistent threats (APT) are stealthy cyber-attacks that are aimed at stealing valuable information from target organizations and tend to extend in time.

Blocking

CICLAD: A Fast and Memory-efficient Closed Itemset Miner for Streams

1 code implementation3 Jul 2020 Tomas Martin, Guy Francoeur, Petko Valtchev

Mining association rules from data streams is a challenging task due to the (typically) limited resources available vs. the large size of the result.

Impact of Biases in Big Data

no code implementations2 Mar 2018 Patrick Glauner, Petko Valtchev, Radu State

In this work, we provide a review of different sorts of biases in (big) data sets in machine learning.

BIG-bench Machine Learning

On the Reduction of Biases in Big Data Sets for the Detection of Irregular Power Usage

no code implementations17 Jan 2018 Patrick Glauner, Radu State, Petko Valtchev, Diogo Duarte

Our models have the potential to generate significant economic value in a real world application, as they are being deployed in a commercial software for the detection of irregular power usage.

BIG-bench Machine Learning

Identifying Irregular Power Usage by Turning Predictions into Holographic Spatial Visualizations

no code implementations9 Sep 2017 Patrick Glauner, Niklas Dahringer, Oleksandr Puhachov, Jorge Augusto Meira, Petko Valtchev, Radu State, Diogo Duarte

Second, in order to allow human experts to feed their knowledge in the decision loop, we propose a method for visualizing prediction results at various granularity levels in a spatial hologram.

Decision Making

The Challenge of Non-Technical Loss Detection using Artificial Intelligence: A Survey

no code implementations2 Jun 2016 Patrick Glauner, Jorge Augusto Meira, Petko Valtchev, Radu State, Franck Bettinger

Detection of non-technical losses (NTL) which include electricity theft, faulty meters or billing errors has attracted increasing attention from researchers in electrical engineering and computer science.

Electrical Engineering

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