1 citations · 1 across the 3 of their papers we have counts for
5 papers
Snow Changes Drought Characterization but Not Drought Predictability: A Leakage-Free Multiscale Study in Ohio
Symon Forthman, Max Gluck, Fatma Sevinc Kurnaz
We examine whether accounting for snow accumulation and melt, which precipitation-based drought indices ignore, changes drought characterization and one-month-ahead drought forecas…
Crypto Price Similarity: An Investigation Using Pearson Correlation and Dynamic Time Warping
Onur Batin Doğan, Fatma Sevinç Kurnaz
The cryptocurrency market's volatility and complex price dynamics challenge portfolio diversification and risk management. This study examines price similarity across 347 cryptocur…
Crime in Proportions: Applying Compositional Data Analysis to European Crime Trends for 2022
Onur Batın Doğan, Fatma Sevinç Kurnaz
This article investigates crime patterns across European countries in 2022 using Compositional Data Analysis (CoDA) to address limitations of traditional statistical approaches in…
Robust and Sparse Multinomial Regression in High Dimensions
Fatma Sevinç Kurnaz, Peter Filzmoser
A robust and sparse estimator for multinomial regression is proposed for high dimensional data. Robustness of the estimator is achieved by trimming the observations, and sparsity o…
Robust and sparse estimation methods for high dimensional linear and logistic regression
Fatma Sevinc Kurnaz, Irene Hoffmann, Peter Filzmoser
Fully robust versions of the elastic net estimator are introduced for linear and logistic regression. The algorithms to compute the estimators are based on the idea of repeatedly a…