arXiv:2501.16086v2 Announce Type: replace-cross Abstract: Forecast reconciliation is considered an effective method to achieve coherence (within a forecast hierarchy) and to improve forecast quality. However, the value of reconciled forecasts in downstream decision-making tasks has been mostly overlooked. In a…
arXiv:2512.00293v1 Announce Type: new Abstract: Time series forecasting is central to data analysis and web technologies. The recent success of Large Language Models (LLMs) offers significant potential for this field, especially from the cross-modality aspect. Most methods adopt an LLM-as-Predictor…
arXiv:2507.07820v3 Announce Type: replace-cross Abstract: Current AI advances largely rely on scaling neural models and expanding training datasets to achieve generalization and robustness. Despite notable successes, this paradigm incurs significant environmental, economic, and ethical costs, limiting sustainability and equitable access.…
arXiv:2512.00298v1 Announce Type: new Abstract: This study analyzes the impact of heterogeneity (“Variety”) in Big Data by comparing classification strategies across structured (Epsilon) and unstructured (Rest-Mex, IMDB) domains. A dual methodology was implemented: evolutionary and Bayesian hyperparameter optimization (Genetic Algorithms,…
arXiv:2512.00164v1 Announce Type: new Abstract: Verified explanations are a theoretically-principled way to explain the decisions taken by neural networks, which are otherwise black-box in nature. However, these techniques face significant scalability challenges, as they require multiple calls to neural network…
arXiv:2512.00303v1 Announce Type: new Abstract: Federated reinforcement learning (FRL) enables distributed learning of optimal policies while preserving local data privacy through gradient sharing.However, FRL faces the risk of data privacy leaks, where attackers exploit shared gradients to reconstruct local training…
arXiv:2512.01276v1 Announce Type: cross Abstract: The standard definition of PAC learning (Valiant 1984) requires learners to succeed under all distributions — even ones that are intractable to sample from. This stands in contrast to samplable PAC learning (Blum, Furst, Kearns,…
arXiv:2512.00307v1 Announce Type: new Abstract: Signed graphs with positive and negative edges can model complex relationships in social networks. Leveraging on balance theory that deduces edge signs from multi-hop node pairs, signed graph learning can generate node embeddings that preserve…
arXiv:2512.01485v1 Announce Type: cross Abstract: Chain-of-Thought (CoT) reasoning has significantly advanced the problem-solving capabilities of Large Language Models (LLMs), yet conventional CoT often exhibits internal determinism during decoding, limiting exploration of plausible alternatives. Recent methods attempt to address this by…
arXiv:2512.00311v1 Announce Type: new Abstract: Knowledge Tracing (KT) aims to model student’s knowledge state and predict future performance to enable personalized learning in Intelligent Tutoring Systems. However, traditional KT methods face fundamental limitations in explainability, as they rely solely on…
