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Jarosław A. Chudziak

Institute of Computer Science, Warsaw University of Technology

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#artificial intelligence Preprint Oct 2026

Interpreting at Write Time: A Policy Ablation for Multi-Goal Agent Memory

A long-running assistant cannot keep everything it has seen, so it summarises. Summarising is not neutral: what is kept is chosen against some notion of what the record is for, and that choice is made once, before anyone knows which of the user's standing goals will ask. Goals rarely disagree about what happened. They...

Albert Sadowski, Jarosław A. Chudziak · 0 citations
#natural language process... Open access Sep 2026

Benchmarking Argumentative Behaviour of LLMs: A Study of Defences Against Character Attacks

It is argued that current safety fine-tuning constraints the strategic action space of these LLMs, making them unable to fully engage in naturalistic interactions within domains where character contestation is a normative expectation rather than a mere fallacy.

Ewelina Gajewska, Katarzyna Budzyńska, Jarosław A. Chudziak · 0 citations
#artificial intelligence Preprint Sep 2026

Loss Choice or Model Choice? The Role of Forecast Level in Cryptocurrency Volatility Forecasting

Volatility forecasts play a central role in financial risk management because their overall level and day-to-day movements affect downstream decisions. Most studies compare forecasting models while keeping the training loss fixed. Yet losses emphasise different errors and can target different properties of future volat...

Andrzej Tokajuk, Jarosław A. Chudziak · 0 citations
Jul 2026

Modeling Decisions in Blockchain Analytics: A Leakage-Aware Evaluation of Tree-Based vs. Sequential Models

This work contributes a framework for leakage-aware Ethereum actor classification and a Transaction Grammar representation of wallet behavior, and demonstrates that, under leakage-aware evaluation, XGBoost outperforms Transformer-based sequence models while providing lower latency and estimated energy use.

M. Bartnicki, Jarosław A. Chudziak · 0 citations
Jul 2026

Compression-Based Behavioral Similarity for Open-World Sybil Discovery on Ethereum

The method is positioned as a training-free local discovery primitive for open-world blockchain audits, rather than as a formal open-set recognition system, and contributes a leakage-aware behavioral framework for Sybil candidate discovery.

M. Bartnicki, Jarosław A. Chudziak · 0 citations

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