HHarouneinharoune.hashnode.dev·8h ago · 18 min readBuilding a crypto spillover pipelineThe question needed a measurement system For my 2026 Master's thesis, I wanted to understand whether economies with more open capital accounts were more exposed to cryptocurrency volatility. When cryp00
MBMadhav Bhasininblog.madhav.dev·20h ago · 6 min readPrompt Versioning and Cost Control: Running LLMs Responsibly in ProductionThe monthly bill was ten times the estimate. Investigation took two hours. Three things were wrong. A retry loop was calling the model on every validation error — including schema mismatches that woul00
KPKaran Puriinspade-tax-compliance.hashnode.dev·8h ago · 5 min readBuild a Multi-Country Tax Research Pipeline with Python and Version ControlTax research becomes difficult when a company operates in several countries. The problem is not only finding a tax rate. Each conclusion depends on the legal entity, transaction type, customer locatio00
FMFaith Mwendeinbeginnerslog.hashnode.dev·13h ago · 4 min readI Finally Understand AUC, Confusion Matrix, and Classification Report (Day 4)Day 3 was splitting. Day 4 was my first actual model : a baseline logistic regression. The model trained fine. The AUC looked great. But the confusion matrix and classification report are what finally00
NINikhil Ikharinnik-hil.hashnode.dev·21h ago · 7 min readAEO and AI Search Demo: Can a Small Tool Help My Article Get Cited?I used to think that publishing a useful article was enough. If someone searched for the topic, they would find it. But what happens when that person asks an AI assistant instead of opening a list of 00
DDharanidharanindtechsolutions.hashnode.dev·12h ago · 5 min readHow to Build a "Chat With Your PDFs" App: A Simple RAG GuideEver wanted to upload a PDF and just ask it questions instead of scrolling through fifty pages? That is what a "chat with your PDF" app does, and it works using a technique called RAG (Retrieval-Augme00
PNPrithwish Nathinprithwish-nath.hashnode.dev·16h ago · 16 min readStop Relying on AI. Learn The Algorithm First.A search feature is the easiest thing to screw up because it’s so plug-and-play these days, you barely even think about it. You’ll probably pick a BM25 library (used by Elasticsearch, Lucene, and othe00
CMChidozie Managwuinfreecodecamp.org·13h ago · 11 min readHow to Build a Reliable AI Assistant with the Claude APILarge language models can answer questions, summarise documents, write code, and interact with external systems. But building a reliable AI application requires more than sending a prompt and displayi00
Rrajveerinreqlens.hashnode.dev·15h ago · 5 min readTesting refund approval thresholds: below, exactly at and aboveA refund of $500.01 needs approval. A refund of $499.99 does not. What should happen at exactly $500.00? If the requirement says only “large refunds require approval,” the team has not agreed the answ00
FDFree Develop AI Notesinfreedevelopainotes.hashnode.dev·20h ago · 4 min readA retention query can pass and still count the wrong week“Active in days 8–14” looks precise until two queries disagree at midnight. Before comparing retention rates, I check three things: the time interval, the observation window, and whether the event exp00
