April 2026

High-performance TSP solvers like LKH search within a sparsified candidate graph rather than over all possible edges. Graph sparsification is non-trivial: keep too many edges and the solver wastes time; cut too many and it loses edges that belong to the optimal tour. The two leading heuristic methods, $α$-Nearest and POPMUSIC, produce high-quality candidate graphs, but no single heuristic is both sparse and reliable across all instance sizes and distributions. Machine learning methods can potentially learn better sparsification […]

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With tools like Cursor, GitHub Copilot, Claude Code, tasks that used to sit on developers’ to-do lists get solved much faster than before. On the development side, everything has sped up. But QA processes haven’t picked up the pace. Someone still has to write Playwright tests from scratch, maintain selectors that break with every UI change, and debug failures manually. Any manual QA work done while code is being generated slows releases nearly to a halt.. In this […]

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If SeaTunnel Zeta is simply understood as “a faster execution engine,” its true value will be underestimated. For data integration systems, the real challenge has never been “whether the pipeline can run,” but whether the following can be achieved at the same time: sufficiently high throughput, recoverability after failure, no data duplication or loss, and controlled resource consumption. What makes Zeta worth serious attention lies exactly here: it does not win through a single performance optimization, but instead […]

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Individual differences in vibrotactile perception underscore the growing importance of personalization as haptic feedback becomes more prevalent in interactive systems. We propose Vibrotactile Preference Learning (VPL), a system that captures user-specific preference spaces over vibrotactile parameters via Gaussian-process-based uncertainty-aware preference learning. VPL uses an expected information gain-based acquisition strategy to guide query selection over 40 rounds of pairwise comparisons of overall user preference, augmented with user-reported uncertainty, enabling efficient exploration of the parameter space. We evaluate VPL in […]

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Launched in 2022 by OpenAI, ChatGPT has become one of the most used apps worldwide, with over 900 million weekly active users as of early 2026. People from all around the world are using it for anything and everything, from writing emails to coding websites. Of course, cybercriminals are taking note of this, and they’ve already created some ways to misuse it to steal information and cryptocurrencies. Let’s see what this is about, and how to avoid potential […]

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A Guide to Racing online with Gran Turismo 7 Going online to multiplayer in Gran Turismo 7 is one of the biggest attractions in the game. In single-player mode, the opponents are predictable. You can practice a track for hours, perfect your lines, and gradually build your pace. But the moment you enter an online race, everything changes. You’re now sharing the track with 15 other real human drivers who race like real people. They brake late, defend aggressively, make […]

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As a hobbyist, I was blessed by the vast choice and low price of the highly capable single board computers (SBC). But my happy life ended in 2026, all thanks to the AI craze! I am one of those guys who like to have a few Raspberry Pi’s lying around the house for experimentation: e.g. running a MCP (Model Context Protocol) server. I also have a few Arduino and ESP32 boards, doing simple things like robotic cars. Naturally […]

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I’m going to be brutally honest about something I see happening across the industry right now. And if you’re a senior engineer, this might sting a little — because I’ve been exactly where you are. The best engineers I know have already integrated AI into every part of their workflow. They’re shipping 2-3x faster, producing higher-quality code, and getting promoted ahead of their peers. Meanwhile, another group of equally talented engineers is sitting on the sidelines, watching — and […]

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Every time I see ‘exactly-once semantics’ in a product README, I add a small mental asterisk. Not because the claim is false (it’s often technically accurate), but because it means something much more specific than most people assume when they first encounter it. I spent the better part of a sprint in our banking platform trying to diagnose why we had duplicate payment records in our Delta Lake tables despite using Spark Structured Streaming with checkpointing enabled. We […]

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