Search Results for author: Bogdan Dumitrescu

Found 6 papers, 3 papers with code

Anomaly Detection with Selective Dictionary Learning

1 code implementation17 Jul 2023 Denis C. Ilie-Ablachim, Bogdan Dumitrescu

In this paper we present new methods of anomaly detection based on Dictionary Learning (DL) and Kernel Dictionary Learning (KDL).

Anomaly Detection Dictionary Learning +1

Reduced Kernel Dictionary Learning

1 code implementation17 Jul 2023 Denis C. Ilie-Ablachim, Bogdan Dumitrescu

In this paper we present new algorithms for training reduced-size nonlinear representations in the Kernel Dictionary Learning (KDL) problem.

Dictionary Learning

Kernel t-distributed stochastic neighbor embedding

no code implementations13 Jul 2023 Denis C. Ilie-Ablachim, Bogdan Dumitrescu, Cristian Rusu

This paper presents a kernelized version of the t-SNE algorithm, capable of mapping high-dimensional data to a low-dimensional space while preserving the pairwise distances between the data points in a non-Euclidean metric.

Clustering

Deep recommender engine based on efficient product embeddings neural pipeline

no code implementations24 Mar 2019 Laurentiu Piciu, Andrei Damian, Nicolae Tapus, Andrei Simion-Constantinescu, Bogdan Dumitrescu

Predictive analytics systems are currently one of the most important areas of research and development within the Artificial Intelligence domain and particularly in Machine Learning.

Benchmarking

Overcomplete Dictionary Learning with Jacobi Atom Updates

no code implementations16 Sep 2015 Paul Irofti, Bogdan Dumitrescu

Dictionary learning for sparse representations is traditionally approached with sequential atom updates, in which an optimized atom is used immediately for the optimization of the next atoms.

Dictionary Learning

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