Beyond Linearity: A New Architecture for Accurate Time Series Forecasting

Researchers have developed ACFormer, a novel approach that blends convolutional efficiency with the power of attention mechanisms to dramatically improve time series prediction.

![Explanation-guided graph neural networks, despite achieving accurate predictions, are susceptible to generating ‘degenerate’ explanations - outputs that correctly encode the predicted label by exploiting irrelevant, consistently-colored nodes - effectively misleading users into believing these nodes drive the model’s inference when they do not, a phenomenon demonstrated by the network’s ability to utilize an ‘anchor set’ [latex]\mathcal{Z}[/latex] of class-indiscriminative nodes to secretly encode predictions.](https://arxiv.org/html/2601.20815v1/figs/violet.png)


![The simulation demonstrates that market valuations, even when driven by as few as 100 agents over 100 time steps, consistently reflect underlying election outcomes, though predictive accuracy is predictably degraded by individual biases, risk aversion, and the inherent noise within both the market price and the true result-particularly around a 0.5 probability, where misclassification risk increases and confidence in alignment between prediction and reality diminishes, as evidenced by the widening transition zone between correct and incorrect classifications with increased uncertainty, despite parameter variations tested across expertise, stubbornness, and budget constraints [latex] B\_{i,0}\sim U(100,1000), V\_{i,0}\sim N(0.5,0.05), s\_{i}\sim\mathcal{N}(0.3,0.05), e\_{i}\sim\mathcal{N}(0.9,0.04), r\_{i}\sim U(0,1) [/latex].](https://arxiv.org/html/2601.20452v1/x1.png)
![The ARMAConv Encoder-Only Transformer (ACEOT) architecture processes weighted adjacency matrices, node-level power injections [latex] (P, Q) [/latex], and node indices to simultaneously estimate node-level attack probabilities for precise localization and a comprehensive graph-level probability for False Data Injection Attacks (FDIA) detection.](https://arxiv.org/html/2601.18981v1/x6.png)
![The study demonstrates that identifying subgroups experiencing the greatest unfairness-particularly within conjunction subgroups [latex]\mathcal{S}_A[/latex] as a subset of broader linear subgroups [latex]\mathcal{S}_L[/latex]-yields optimal solutions, as evidenced by the performance of MSD and GerryFair relative to alternative approaches.](https://arxiv.org/html/2601.19595v1/x1.png)
