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S. Nikolopoulos

2 papers hereh-index 217 citations8 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • sole author2

Across the 2 of 2 papers where every author was matched, so the position is known.

fields
  • q-fin.ST1
  • stat.ME1

identity via Semantic Scholar / OpenAlex

collaborators

2 papers

q-fin.ST2026

Spurious Predictability in Financial Machine Learning

Sotirios D. Nikolopoulos

Adaptive specification search generates statistically significant backtests even under martingale-difference nulls. We introduce a falsification audit testing complete predictive w…

stat.ME2025

An Imbalance-Robust Evaluation Framework for Extreme Risk Forecasts

Sotirios D. Nikolopoulos

Evaluating rare-event forecasts is challenging because standard metrics collapse as event prevalence declines. Measures such as F1-score, AUPRC, MCC, and accuracy induce degenerate…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.