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The Cohesion Series and IVP — Five Papers Published

The cohesion paper series is now published in full — five papers that build a chain from the concept of cohesion to the Independent Variation Principle (IVP) . The chain: On the Nature of Cohesion — defines cohesion as a $2k$-tuple: for $k$ partitioning rules, $k$ (purity, completeness) pairs. Proves the knowledge-embodiment theorem: maximal cohesion under a rule coincides with exact knowledge embodiment under that rule. Shows that every published algorithmic cohesion metric measures a structural proxy (method-call overlap, shared-field density), not cohesion as defined by a principle. DOI: 10.5281/zenodo.20785752 Causal Cohesion — instantiates the schema under one concrete rule — change-driver-assignment identity: elements belong together iff $\Gamma(e_1) = \Gamma(e_2)$. Develops the metric $H_\text{causal}(M) = (\text{purity}(M), \text{completeness}(M))$, a two-dimensional score that fills one slot of the $2k$-tuple. DOI: 10.5281/zenodo.20785881 Four Necessary Conditions for Optimal Modularization — from the schema plus the objective of minimizing change propagation, proves four conditions — Admissibility, Element Form, Separation, Unification — are necessary and jointly exhaustive, uniquely pinning the $\Gamma$-equality partition $E / \tilde{\Gamma}$. DOI: 10.5281/zenodo.21362420 Why Minimizing Change Propagation Minimizes Maintenance Cost — decomposes total maintenance cost into access, alignment, cognitive, and domain-fixed components. Proves that minimizing change propagation cost is equivalent to minimizing total maintenance cost under an explicit coefficient condition, justifying the objective paper 5 assumed. DOI: 10.5281/zenodo.21362542 The Independent Variation Principle — synthesizes the chain into a single structural principle and examines the premises (change drivers, functional model, change isolation), preconditions (driver independence, decisional autonomy), and scope boundary. DOI: 10.5281/zenodo.21362618 Two derivations Last month's preprint — Der

2026-07-15 原文 →
AI 资讯

Article: Virtual panel: Security in the Machine Age: Expert Insights on AI Threat Evolution

This virtual panel brings together AI security experts to examine the evolution of AI-driven threats, from prompt injection and data poisoning to agent abuse and AI-powered social engineering. The discussion explores emerging attack patterns, incident response challenges, and the changes security teams must make as AI systems become more autonomous and integrated into critical workflows. By Claudio Masolo, Elham Arshad, Sabri Allani, Vijay Dilwale, Igor Maljkovic

2026-06-29 原文 →
AI 资讯

VERCEL_EXPERIMENTAL_DEV_SKIP_LINK: Stop Dev Link Hangs

TL;DR If the Vercel CLI keeps trying to open a dev link against your Vercel project during local next dev runs, set VERCEL_EXPERIMENTAL_DEV_SKIP_LINK=1 in the shell that launches the dev server, or add it to .env.local at the project root, and restart the process. The flag is opt-in, all-uppercase, and only affects local CLI behaviour. It never reaches your deployed build, and the production runtime on Vercel does not read it. If the CLI still tries to link after a restart, scroll to Debugging when the skip link isn't working for the version-compatibility and process-tree checks that catch the cases the basic setup misses. I have shipped this flag in three production monorepos and the same four mistakes account for almost every "I set it and it did nothing" report I see. What VERCEL_EXPERIMENTAL_DEV_SKIP_LINK actually does VERCEL_EXPERIMENTAL_DEV_SKIP_LINK is an opt-in environment variable the Vercel CLI honours when it runs alongside a local Next.js dev server. Its job is narrow: tell the CLI to skip the step where it would normally reach out to Vercel and create or refresh a dev link against your Vercel project. A "dev link", in the Vercel sense, is a local connection record that lets vercel dev and some Vercel-only local emulators (KV, Postgres, Edge Config) pull real values from a Vercel project. It is useful when you want production-shaped data during development, and a real annoyance when you do not — for example in CI sandboxes, offline laptops, monorepo workspaces that share a single project, or any time you want next dev to behave like a plain Node process without the CLI wrapping it. The variable is shipped under the VERCEL_EXPERIMENTAL_ namespace, which Vercel uses to mark features that can change between CLI versions. That has two practical consequences: the name must be uppercase with underscores, and you should not build production logic on top of it. I treat it like a local-dev knob, set per shell session, and never check it into CI as a hard dependen

2026-06-27 原文 →
AI 资讯

Article: Understanding ML Model Poisoning: How It Happens and How to Detect It

In this article, the author explores data poisoning as a threat to machine learning systems, covering techniques such as label flipping, backdoors, clean-label poisoning, and gradient manipulation. The article reviews real-world incidents, discusses the challenges of detecting poisoned data, and presents practical defenses, tools, and operational practices for securing ML training pipelines. By Igor Maljkovic

2026-06-22 原文 →
AI 资讯

The Developer's Guide to Environment Variables and Secrets Management

Why This Deserves More Attention Than It Gets Credential leaks are one of the most common and preventable security incidents in software. Bots actively scan GitHub for newly pushed API keys, database URLs, and private credentials — and they find them within minutes of a commit going public. Rotating compromised credentials is painful, and in some cases the damage is done before you even realize what happened. This isn't just an enterprise problem. It happens on solo side projects, open-source repos, and internal tools at startups. And the root cause is almost always the same: someone treated secrets like regular configuration and didn't have a clear strategy for keeping them out of version control, logs, and error messages. The patterns in this guide aren't bureaucratic overhead. They're the minimum viable approach for any app that talks to a real database or a real API. What Environment Variables Actually Are An environment variable is a key-value pair that lives in a process's environment — a set of values the operating system makes available to any running program. Every process inherits the environment of the process that spawned it. In Node.js, you access them through process.env : const port = process . env . PORT ; const dbUrl = process . env . DATABASE_URL ; In Python: import os port = os . environ . get ( ' PORT ' ) db_url = os . environ . get ( ' DATABASE_URL ' ) The core idea — and the reason env vars are the standard approach — is that they decouple what the app does from where it runs . The same application code can point at a local development database or a production cluster. The code doesn't change; only the environment does. This is the heart of the 12-Factor App principle: store config in the environment, not in the code. The .env File: What It Is and What It Isn't In local development, you don't set environment variables by hand before every terminal session. Instead, you use a .env file — a plain text file at the root of your project with one key

2026-06-08 原文 →