January 2026

Welcome to HackerNoon’s Meet the Writer Interview series, where we learn a bit more about the contributors that have written some of our favorite stories. Let’s start! Tell us a bit about yourself (name, profession, and personal interests). My name is Dechun. I’m a software engineer working in the UK, mainly on large-scale payment systems. I spend a lot of time thinking about how AI behaves once it’s deployed in real-world environments. I’m particularly interested in how AI […]

Ver mais

Contrastive learning has become a leading self- supervised approach to representation learning across domains, including vision, multimodal settings, graphs, and federated learning. However, recent studies have shown that contrastive learning is susceptible to backdoor and data poisoning attacks. In these attacks, adversaries can manipulate pretraining data or model updates to insert hidden malicious behavior. This paper offers a thorough and comparative review of backdoor attacks in contrastive learning. It analyzes threat models, attack methods, target domains, and available […]

Ver mais

Documentation culture is about behavioral traits that technical writers practice every day based on set of beliefs and organizational values. Introduction A documentation culture reflects the behavioral traits practiced by everyone guided by shared beliefs and organizational values where writing is treated as a core part of their job role. Organization with strong documentation culture embeds writing into their cultural DNA whereby knowledge is captured, documented and more importantly leveraged. The defining characteristic of such a culture is […]

Ver mais

The Invisible Wall in Your Codebase Imagine a new senior engineer joins your team. They are brilliant, experienced, and eager to push code. But for the first three weeks, their most common contribution is a question: “Hey, does anyone know why we used a custom hook here instead of a library?” or “Where is the doc explaining the database schema?” This is the Unsearchable Knowledge Problem. In most engineering organizations, knowledge exists in fragmented silos that don’t talk […]

Ver mais

Working extensively with AWS credentials in Kubernetes this quarter revealed how often credential precedence causes configuration issues. While the AWS SDK’s credential chain is well-designed, understanding the priority order is crucial for production deployments. Here’s what I’ve learned. The Problem Nobody Talks About A recent incident illustrated this well: We configured IRSA for a microservice, validated it in staging, and deployed to production successfully. Two weeks later, an audit revealed the service was using broader IAM permissions than […]

Ver mais

Physics-informed extreme learning machines (PIELMs) typically impose boundary and initial conditions through penalty terms, yielding only approximate satisfaction that is sensitive to user-specified weights and can propagate errors into the interior solution. This work introduces Null-Space Projected PIELM (NP-PIELM), achieving exact constraint enforcement through algebraic projection in coefficient space. The method exploits the geometric structure of the admissible coefficient manifold, recognizing that it admits a decomposition through the null space of the boundary operator. By characterizing this manifold […]

Ver mais

Physics-informed extreme learning machines (PIELMs) typically impose boundary and initial conditions through penalty terms, yielding only approximate satisfaction that is sensitive to user-specified weights and can propagate errors into the interior solution. This work introduces Null-Space Projected PIELM (NP-PIELM), achieving exact constraint enforcement through algebraic projection in coefficient space. The method exploits the geometric structure of the admissible coefficient manifold, recognizing that it admits a decomposition through the null space of the boundary operator. By characterizing this manifold […]

Ver mais