Author

Sandeepa Weerasekara

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#machine learning Preprint Jun 2026

Forecasting Weather-Driven Price Dynamics Across Sri Lankan Tea Market Catalogues

The Colombo Tea Auction (CTA) plays a vital role in determining global tea prices, yet the relationship between local weather conditions and price behavior across different tea catalogues has not been thoroughly explored. In this study, we develop a novel, structured dataset by extracting information from 105 weekly br...

H. Mallawarachchi, Senilka Madurapperumage, Nadil Kulathunge et al. · 0 citations

Jun 2026

TopoCast: A Topological Fidelity Framework for Evaluating Transformer-Based Time Series Forecasting

TopoCast, a topology-driven framework for evaluating structural fidelity in TSF, is proposed and dominant cycle overlap is introduced, a novel metric that maps persistent topological features to the temporal domain to assess whether dominant oscillatory patterns occur at the correct time points.

Sandeepa Weerasekara, Sandareka Wickramanayake · arXiv.org · 0 citations