Search Results for author: Dijana Tolic

Found 3 papers, 1 papers with code

Inferring short-term volatility indicators from Bitcoin blockchain

no code implementations19 Sep 2018 Nino Antulov-Fantulin, Dijana Tolic, Matija Piskorec, Zhang Ce, Irena Vodenska

In this paper, we study the possibility of inferring early warning indicators (EWIs) for periods of extreme bitcoin price volatility using features obtained from Bitcoin daily transaction graphs.

Underestimated cost of targeted attacks on complex networks

no code implementations10 Oct 2017 Xiao-Long Ren, Niels Gleinig, Dijana Tolic, Nino Antulov-Fantulin

Finally, for the case when it is possible to attack links, we propose a simple and efficient edge removal strategy named Hierarchical Power Iterative Normalized cut (HPI-Ncut). The results on real and artificial networks show that the HPI-Ncut algorithm outperforms all the node removal and link removal attack algorithms when the cost of the attack is taken into consideration.

A Nonlinear Orthogonal Non-Negative Matrix Factorization Approach to Subspace Clustering

1 code implementation29 Sep 2017 Dijana Tolic, Nino Antulov-Fantulin, Ivica Kopriva

A recent theoretical analysis shows the equivalence between non-negative matrix factorization (NMF) and spectral clustering based approach to subspace clustering.

Clustering

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