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Best-of-K eval selection bias: pick the highest-scoring config from K candidates on one eval set and that observed score is biased up. It reports the expected maximum of K noisy estimates, which beats the field mean whenever K exceeds one. The bias appears even when all K configs are truly equal, grows with K, and shrinks with n. Here is the version that bites you. Your bake-off ran a batch of prompts against one eval set, the top one came out ahead, and you shipped it. In production it does ...

用 FROST 家族治理模型，构建你的「AI 第一性原理」 作者 ：神通说 日期 ：2026-07-23 主题 ：双项目联动 | 周四代码教程 阅读时间 ：12分钟 前言：为什么你需要「第一性原理」？ 埃隆·马斯克推崇「第一性原理」思维——从物理学的最基本定律出发，而不是类比他人的做法。 在 AI Agent 开发领域，大多数人都在用 LangChain、CrewAI、AutoGen 这些现成框架。它们很好用，但你是在用别人的「家族结构」，而不是理解为什么需要家族结构。 FROST 的目标是让你从第一性原理理解 AI Agent： 为什么需要治理结构？为什么需要记忆传承？为什么需要层级分工？ 然后，FROST-SOP 帮你把第一性原理变成可运行的系统。 一、从细胞分裂看 AI Agent 本质 想象一个细胞分裂的场景： ┌─────────┐ │ 细胞 │ ← 拥有细胞核（记忆）、蛋白质（能力） └────┬────┘ ...

Table of Contents: Introduction Constants Singletons & Services Singleton Service Locator Introduction Every Unity developer eventually hits the exact same wall: how do I get my UI script to talk to my Game Manager without turning my codebase into a tangled web of dependencies? Managing global state is a fundamental challenge in game architecture, and the internet is full of conflicting, often dogmatic advice on how to handle it. In this article, we are g...

This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry . 🦄 I debated writing this for a long time, but I finally talked myself into really writing again after a hiatus, and there's no better way than story time. So here's one of the most challenging bugs—or really, the series of them—I've run into in the enterprise world. Grab some popcorn and Skittles, because this one takes a while. Better yet, cue up Jerry's actual theme song— Jerry Was a Race Car Driver...

Back on 2026-07-14 I found and fixed a real landmine in this repo: requirements.txt had mcp[cli] with no version constraint at all. Any fresh install could pull in a breaking major version with zero warning. I pinned it to mcp[cli]>=1.28.0,<2.0.0 and moved on, feeling like I'd closed the gap. I hadn't. I'd only pinned the library . The actual contract my MCP server exposes to any agent that connects to it — the tool names, parameter shapes, and descriptions an LLM reads to decide...

I love InertiaJS to the point where it's becoming a personality trait I tend to want to use it for everything, but adding Inertia to an existing Laravel API gets awkward fast. Same thing happens in the other direction: you start with a full Inertia frontend and then realize you want to expose some of that data as a public API too. The naive solutions are: Sprinkle if ($request->wantsJson()) into your controllers Maintain two separate routes that return the exact same data ...

Coolify's one-line install script is great — until it isn't. Right now it officially supports Ubuntu 20.04, 22.04, and 24.04 LTS. If you're running anything newer (Ubuntu's already on 26.04 LTS), the script won't work and you're left doing it manually. This is that manual walkthrough — set up in the order that fits a security-first VPS workflow rather than the order Coolify's own docs use. If you've been following along with the Ansible playbooks from earlier in this series, this picks up rig...

If you've ever tried converting a bank statement PDF to CSV and ended up with a jumbled mess of merged cells, missing rows, or split transaction descriptions — you're not alone. This is one of the most common data pain points for accountants, bookkeepers, and anyone who does their own finances. In this post, I'll walk through why this happens, what the right approach looks like, and how to get clean, analysis-ready CSV output from any bank statement. Why Bank Statement PDFs Ar...

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