Time-Series

The Grammar and the Glow: Making Sense of Time-Series AI What if time-series data had a grammar, and AI could read it? That idea is no longer poetic conjecture—it now has theoretical teeth and practical implications. Two recent papers offer a compelling convergence: one elevates interpretability in time-series AI through heatmap fusion and NLP narratives, while the other proposes that time itself forms a latent language with motifs, tokens, and even grammar. Read together, they suggest a future where interpretable AI is not just about saliency maps or attention—it becomes a linguistically grounded system of reasoning. ...

The Multimodal Mirage In recent years, there’s been growing enthusiasm around combining unstructured text with time series data. The promise? Textual context—say, clinical notes, weather reports, or market news—might inject rich insights into otherwise pattern-driven numerical streams. With powerful vision-language and text-generation models dominating headlines, it’s only natural to wonder: Could Large Language Models (LLMs) revolutionize time series forecasting too? A new paper from AWS researchers provides the first large-scale empirical answer. The verdict? The benefits of multimodality are far from guaranteed. In fact, across 14 datasets spanning domains from agriculture to healthcare, incorporating text often fails to outperform well-tuned unimodal baselines. Multimodal forecasting, it turns out, is more of a conditional advantage than a universal one. ...