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Mind The Abstract 2025-08-17

Symbolic Quantile Regression for the Interpretable Prediction of Conditional Quantiles

Think ahead: the 90th‑percentile fuel requirement for a Boeing 777 can jump out of the blue when pilots depart a little faster than planned, and suddenly the fuel budget is busted. Symbolic Quantile Regression (SQR) turns that mystery into a crisp, human‑readable equation that pinpoints the exact factor that pushes fuel up to the tail end of the distribution, giving airlines a rule‑like “why does this happen?” that is just as useful for planning as it is for compliance. SQR achieves this by framing quantile regression as a dual‑objective evolution: it minimizes pinball loss while simultaneously trimming symbolic expression length with an adaptive parsimony penalty, all inside the PySR engine that keeps the search diverse through age‑based diversity and simulated annealing. Balancing ultra‑compact formulas with tight error is a beast, yet SQR’s Pareto front lets users pick a model that stays within a handful of symbols without sacrificing accuracy, much like a chef adjusting a recipe to keep flavor while cutting calories. The outcome is a set of short equations that can be embedded into flight‑planning software or risk dashboards, letting operators preemptively trim fuel budgets, curb emissions, and keep safety margins intact.

Bridging Formal Language with Chain-of-Thought Reasoning to Geometry Problem Solving

What's the secret behind a triangle that refuses to exist? A simple typo in the side labels turns a friendly geometry problem into a logical nightmare. The triangle is described by vertices B, G, and L, but the side BG is claimed to be 7.5 inches and also 6.5 inches—two contradictory numbers for the same segment. Because BG and GB denote the same line, the solver throws a red flag: one assertion says 7.5, the other says 6.5, and there’s no way both can be true. This clash is the exact reason many CAD programs pause, demanding clean data. The key tech detail is the equality check that immediately flags the conflict when the same segment is given two different lengths. The challenge, however, is that catching this error early requires a formal consistency engine that can see the hidden duplicate labels. Think of it like two travelers each giving a different distance to the same destination—without a third source, the map becomes unreliable. Solving this inconsistency is essential for any tool that builds reliable models, ensuring every edge has a single, agreed‑upon length and keeping design pipelines smooth.

A Personalized Exercise Assistant using Reinforcement Learning (PEARL): Results from a four-arm Randomized-controlled Trial

Ever dreamed of turning a smartwatch into a personal coach that learns what nudges spark your stride? This 60‑day, 4‑arm trial with 1,200 Fitbit users tested four approaches: no push, random daily reminders, a fixed schedule based only on baseline motivation, and an adaptive nudge powered by contextual reinforcement learning—an e‑greedy multi‑armed bandit that tweaks timing and content each day. The algorithm delivered one of six behavior‑change themes, from planning to social opportunity, either in the morning or afternoon. After 12 weeks, the RL arm lifted daily steps by 5% over the random‑nudge baseline and outperformed the fixed‑personalized arm, while still showing a steady climb compared to the no‑nudge group. The study shows that a data‑driven coach can beat static reminders, turning a generic fitness app into a scalable, personalized mover that could help millions finally turn every step into a win, like a GPS that recalculates the best route for each walk.

FairFLRep: Fairness aware fault localization and repair of Deep Neural Networks

Visualize a face‑recognition system that still spots every mugshot but no longer skews toward one gender. That’s the promise of FairFLRep, a repair framework that slashes bias across images and tables while keeping accuracy intact and slashing compute time. Its secret weapon? Tweaking only the final layer’s weights—a tiny tweak that preserves the model’s learned magic yet fixes the unfair decisions. The real challenge is juggling a storm of fairness metrics—equal opportunity, disparate impact, statistical parity—without letting one win break another, a beast to wrangle that other methods flounder on. Think of FairFLRep as a sculptor who chisels away just the offending blemishes on a statue, leaving the whole form untouched. The result is a system that not only meets today’s tight fairness regulations, from the EU AI Act to GDPR, but does so at a fraction of the training cost. In a world where AI must be both powerful and equitable, FairFLRep offers the speed and precision to deploy truly fair models without breaking a sweat.

TechOps: Technical Documentation Templates for the AI Act

Learn how to turn a labyrinth of compliance into a clean, click‑ready checklist. TechOps, a set of open‑source Markdown templates, lets AI teams lay out every data set, model, and system in plain, version‑controlled prose so the EU AI Act’s technical‑documentation rules can be met from start to finish. The design keeps entries short and actionable, with built‑in safeguards for intellectual‑property confidentiality and built‑in alerts that flag risk, bias, robustness, and human‑override gaps before they bite. It’s like a Swiss army knife for AI documentation—compact, multi‑tool, and ready to deploy at a glance. A key feature is the rolling version history that guarantees every tweak is tracked, so auditors can see exactly how policies evolved over time. The biggest hurdle? Keeping the templates in sync with the Act’s rapidly shifting mandates, a beast that can trip up even the most seasoned compliance officers. By adopting TechOps, developers and regulators can keep documentation lean, risk‑aware, and audit‑ready, dramatically cutting the chance of costly fines or shutdowns while keeping the innovation engine humming.

A Machine Learning Approach to Predict Biological Age and its Longitudinal Drivers

Ever thought a two‑year health snapshot could forecast your biological age like a weather forecast? The study turns routine check‑ups into early‑warning alerts: by turning biomarker trends—especially the yearly climb in LDL and BMI—into slope features, a LightGBM regressor predicts biological age two years ahead with R² around 0.5, outpacing static clocks by over four times. This means clinicians could flag people racing toward chronic disease before symptoms surface, while drug trials could use BA drops as a lightning‑fast surrogate endpoint, speeding up longevity research. Modeling aging velocity, however, is a beast to wrangle because it demands dense, longitudinal data and complex non‑linear interactions. It’s like watching a plant grow instead of taking a single photo; the trajectory reveals hidden stress that a snapshot misses. As people cross 55 or slip into the overweight BMI range, the predictive signal sharpens, underscoring distinct aging regimes that call for tailored intervention. In a world where preventive care is king, this dynamic clock offers a real‑time compass to steer healthier futures.

Alternating Approach-Putt Models for Multi-Stage Speech Enhancement

What could a tiny two‑stage neural trick turn into? A crystal‑clear conversation from a crackling call in a subway tunnel. The method, dubbed Approach‑Putt, first throws a coarse U‑Net‑style net at the noisy waveform, pulling out a rough estimate of the clean speech. Then a second supervised “Putt” network trims away the residual glitch by learning the orthogonal distance from that rough estimate to the straight line that connects the noisy input and the true clean signal—essentially projecting the signal back onto its natural path. The trick is that this artifact component can be expressed in a single tidy equation, so the second net only has to learn one precise geometric target. The real‑world win? Every smartphone, hearing aid or voice‑assistant that needs to filter traffic noise or bad mic pickup can keep the audio crisp without the heavy baggage of diffusion models. The challenge remains a beast to wrangle: making sure the first net doesn’t suppress too much and invite a vanishing‑gradient nightmare, turning silence into new, annoying artifacts. Picture the process as a golf swing: an approach shot clears the rough, and a careful putt nails the final stance. With each iteration, the speech gets closer to the clean waveform, giving listeners a surprisingly seamless listening experience that feels as natural as speaking to a friend.

Geospatial Diffusion for Land Cover Imperviousness Change Forecasting

Get ready: a city’s future can now be painted with sub‑kilometre precision, as a new generative AI model turns past satellite mosaics into a crystal‑clear forecast of where concrete will creep next. This lets planners spot flood‑risk zones before the rain falls and nudges developers toward smarter, greener corridors. The model, GeoDiff‑National, harnesses denoising diffusion probabilistic models to sift through three historic NLCD snapshots, turning a blurry past into a sharp 30‑meter prediction. But feeding only three decades of data into a machine that expects a steady drip of growth is a beast to wrangle, especially when a recession or a zoning change could rewrite the map overnight. Think of it as a seasoned weather forecaster who learns from past storms to predict tomorrow’s cloud pattern, only here the storm is urban sprawl. With this tool, city designers can anticipate the shape of tomorrow’s streets, turning uncertainty into a concrete advantage.

Fuzzy-Pattern Tsetlin Machine

What if a logic‑based AI could learn faster, use less memory, and still explain itself? The Fuzzy‑Pattern Tsetlin Machine (FPTM) does exactly that by turning a hard all‑or‑nothing clause test into a fuzzy, graded vote. One clear tech detail: each clause tallies matched minus mismatched literals, capped by a hyper‑parameter LF, turning a single clause into a family of sub‑patterns and slashing the clause count by more than 50× on the IMDb text sentiment task, trimming training time to 45s from four hours. The challenge? Balancing fuzzy voting against clause size—handled by deterministic feedback and a hard limit L. Picture the system as a weather forecaster that tolerates slight temperature swings instead of demanding perfect readings, making it robust to noise. This shift powers on‑device, real‑time learning on tiny microcontrollers with just 50 KB of RAM, opening the door for explainable AI at the edge today. Its lightweight footprint means even smart wearables or autonomous drones can update models on the fly, turning data into instant insights.

Comparison of D-Wave Quantum Annealing and Markov Chain Monte Carlo for Sampling from a Probability Distribution of a Restricted Boltzmann Machine

Picture this: a quantum annealer, humming with 5,000 qubits arranged in a Pegasus lattice, takes a trained Restricted Boltzmann Machine and maps its entire energy landscape onto the hardware. This mapping lets the device wrestle with far higher‑dimensional models than earlier chips that relied on the smaller Chimera grid, opening the door to quantum‑powered generative AI and deep‑learning demos that were once out of reach.

The study shows that the quantum device can churn out a set of low‑energy, locally stable states—called local‑minimum (LV) states that rivals classic Gibbs sampling, but the two approaches play a different game.

Like two treasure hunters chasing different clues in a sprawling cave, the quantum and classical samplers discover largely disjoint pockets of the energy surface: over 70% of the quantum‑found LVs slip past Gibbs, and vice‑versa, with the quantum side tending to find higher‑energy, rarer pockets while Gibbs catches more intermediate states.

The biggest challenge? As training marches on and the energy landscape shimmers with complexity, each method misses a growing slice of the other’s finds, making it hard to guarantee exhaustive coverage.

This split insight signals that quantum annealing offers a fresh, complementary perspective on sampling, hinting at a future where quantum and classical tools collaborate to unlock richer AI models.

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