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Manually converting invoice data from PDF or Excel files into CSV format is one of the most time-consuming tasks in accounting and data management workflows. It often involves repetitive copy-pasting, formatting adjustments, and a high risk of human error. In many real-world scenarios, invoices arrive in different formats such as PDF, XLS, XLSX, or even HTML. Handling them individually can slow down reporting pipelines and create inconsistencies in structured data storage. The Problem with Manual Conversion Traditional invoice processing usually involves: Extracting line items manually from PDFs Reformatting Excel sheets for database compatibility Fixing inconsistencies in columns and values Rechecking for missing or misaligned data As invoice volume increases, these tasks quickly become inefficient and error-prone. Automated Approach to Invoice Conversion A more efficient approach is using tools that automatically parse invoice documents and convert them into structured CSV format. These tools typically: Read multiple file formats (PDF, XLS, XLSX, HTML) Detect table structures and line items Normalize data into rows and columns Export clean CSV files ready for spreadsheets or databases For example, uploading a multi-page invoice PDF can result in fully structured rows representing each item, without manual formatting adjustments. Why CSV Output Matters CSV remains one of the most widely used formats for: Accounting software imports Database ingestion Data analysis workflows Spreadsheet processing Having clean CSV output ensures compatibility across systems and reduces preprocessing work. Practical Impact Automating invoice-to-CSV conversion helps reduce: Repetitive manual data entry Formatting inconsistencies Processing time for bulk invoices It also improves accuracy when handling large datasets. Closing Note As data-driven workflows become more common in finance and operations, automating repetitive tasks like invoice conversion can significantly improve efficien

A finance bot kept issuing refunds in a loop because nobody built a way to stop it. Clean code. Sound logic. No off switch. A small bug became a long night. Here is the opinion most teams do not want to hear. Building the agent is the easy 80 percent. That off switch is the 20 percent that decides whether you can ship it at all. We celebrate the wrong milestone. Picture the demo where the agent books the meeting, writes the email, updates the record. That part is genuinely fun to build and genuinely easy now. Harder is the boring question nobody claps for. What happens when it is wrong, fast, and confident. An AI agent is not a chatbot. It takes actions in the real world. It spends money, deletes rows, messages real people, moves files. Wrong answers in a chat are annoying. A wrong action at machine speed is an incident with your name on it. So before features, I build the stop. One real kill switch is not a single button. Think of it as a small set of bounds that live from the first version. A spend ceiling, so a retry loop cannot drain the account A blast radius limit, so one task can never touch more than it should A human gate on anything irreversible, so the agent proposes and a person commits A global stop that halts everything in one move, with no redeploy None of that is glamorous. All of it is what lets you sleep at night. Teams skip this for a reason that feels rational in the moment. Bounds feel like negative work. They never show up in the demo. Your agent runs fine without them right up until the one time it does not, and that one time is the only time anyone remembers. Here is the reframe that changed how I build. Treat the stop as the feature that makes an agent shippable. Bolt it on at the end and you have already shipped a liability that happens to pass the demo. Honest about the trade-off. Bounds slow you down. You will watch the agent pause for an approval it could technically have skipped, and it will feel like friction. That friction is the pric

The “5-minute market” concept is gaining attention because of how fast new prediction rounds appear and how quickly volume builds up. Each cycle is short, which creates both opportunity and risk for anyone trying to analyze or trade it. In this article, I’ll break down how I’ve been approaching this space from a data perspective, how I’m thinking about building an edge, and the tools I’ve been experimenting with. What is the 5-minute market? A 5-minute market is a fast-cycle prediction or trading window where outcomes resolve quickly and new markets appear frequently. Compared to longer timeframes (like 15-minute markets), these shorter cycles: Generate more trading opportunities per hour Require faster data collection and processing Make latency and execution extremely important Increase noise in price action Because of this, traditional slow analysis often doesn’t work well here. Data collection approach My current setup focuses on continuously pulling market data in real time. The idea is simple: Connect to a market data source (I’m using a Gamma API as part of the pipeline) Stream or request live market updates Store order book + price movement data Aggregate it into 5-minute windows for analysis The goal is to build a dataset that can later be used for backtesting and feature extraction. Right now, I’m mainly focusing on a single asset (PPC) to keep things simple while testing the pipeline. Where the potential edge might come from The key question is: can we predict short 5-minute movements better than random chance? Some areas I’m exploring: 1. Order book behavior Tracking: Liquidity changes Bid/ask imbalances Sudden volume spikes 2. Session-based behavior Some traders observe patterns during different market sessions: Asian session behavior London session volatility Overlap periods These may or may not hold in 5-minute markets, but they’re worth testing. 3. Micro momentum patterns Since markets reset frequently, short momentum bursts might matter more than lo

Hello, I'm Maneshwar. I'm building git-lrc, a Micro AI code reviewer that runs on every commit. It is free and source-available on Github. Star git-lrc to help devs discover the project. Do give it a try and share your feedback. I boot up my machine. The desktop loads. And before I open my editor, before I check Slack, before I do a single productive thing, I right-click an empty patch of desktop and hit Refresh . Then I do it again. And again. I am a person who can explain event loops and reason about cache invalidation, and yet here I am, mashing F5 on a static wallpaper like it owes me money. If you've never done this, congratulations, you're better than me. If you have ... welcome. You're among friends. First, let's kill the myth There's a folk belief that refreshing the desktop is a tiny act of system maintenance. A little spring cleaning. A gift to your hardworking CPU. It is not. Manually refreshing your desktop does not : free up RAM reduce CPU load clear some mysterious cache make your PC faster in any way, shape, or form All it does is tell Windows Explorer to redraw the current view . That's it. That's the whole feature. What's actually happening under the hood Here's the part that's actually interesting (we're devs, we live for the "actually"). Windows doesn't repaint your entire screen on every frame, that would be wildly wasteful. Instead it leans on a composition engine that, with help from your GPU when one's available, only redraws the regions that changed since the last frame. Already drawn elements get cached and reused. Icons, the taskbar, your wallpaper they're all mostly static, so mostly left alone. When something genuinely changes (you save a file, delete a folder, plug in a drive), the OS detects it and tells the composition engine: "hey, this little rectangle changed, repaint just that." The desktop refreshes itself, automatically, all day long, without you ever touching anything. So the manual Refresh button is really just a manual overrid

TL;DR Welcome back to Dev Opportunity Radar. This is a weekly series where I share opportunities,...

Every startup idea looks perfect... until you start building. The first version of PixoraCloud looked amazing on paper. Then reality hit. We discovered: Some features weren't necessary Some APIs were too complicated Some ideas solved our problem, not the user's problem So we changed them. A lot. That's where we are today. Not chasing perfection. Chasing simplicity. Building in public means admitting your first idea isn't always your best one. What's one thing you've completely changed after starting a project?

👋👋👋👋 Looking back on your week -- what was something you're proud of? All wins count -- big or small...

At its core, software development has always been about a simple cycle: Write > Review >...

You walk into the RFP briefing. Your competitor has 200 people, 97% AI coverage, and a 4-day delivery promise. You have 15 people and a proposal you haven't even finished writing. Do you bet on better tech, or on understanding people better — and playing dirtier when you have to? This story is your answer. Act I · The Crack When Finova's RFP landed, everyone in the industry knew how big this was. Cross-border payment system. Multi-currency settlement + compliance + risk. Their last deployment had a P0 incident — an exchange rate module drifted by four decimal places in an edge case, and audit chased it for two months. So Finova's CTO made it clear: a $1.8M contract, and whoever signs off owns the result. $1.8M. Enough to keep a small testing company alive for a whole year. Plenty of firms showed up at the briefing. But only two were real contenders. QualiGuard — mid-sized, just closed their Series A, 200 people, their own AI testing platform called Aegis. A $1.8M contract was barely a rounding error for them — but with Series A money comes the pressure to show revenue growth for the next round, and Finova was a trophy client in the cross-border payments space. The case study was worth more than the project itself. Derek stood at the podium, flipping through slides packed with numbers: Aegis delivers 97.2% test automation coverage. Full Finova platform testing in four business days. No "we'll try." Just "we can do it." VeriTest — small, fifteen people. Marcus spent the whole morning working the room with Finova's people. I sat in the back row with nothing. Marcus slid back over and leaned in: "Their PPT makes yours look like a joke." I didn't answer. I was watching Derek's boss. Sarah — QualiGuard's VP, Derek's direct supervisor. She sat in the front row, off to the side, and never once looked at Derek during his entire presentation. She was on her phone. As one of the few women running a technical department, I watched her longer than I watched Derek. When Derek fla

I joined DEV at the start of January, but it's only really been in the past week or so that things clicked into place — and looking back, it's been a lot more eventful than I expected for "week one." What I Set Out to Do My original plan was simple: write a structured series covering iOS development with Swift and SwiftUI, one topic at a time, with anime examples thrown in to keep things fun. Strings, arrays, loops, functions — the building blocks. What I didn't plan for was everything else that happened alongside it. The June Solstice Game Jam Happened I saw the announcement for DEV's June Solstice Game Jam and, on a whim, decided to build something for it. A few hours later I had a fully working SwiftUI trivia game — Pride Trivia & Alan Turing Edition — with ten questions covering LGBTQIA+ history and Alan Turing's legacy, a rainbow progress bar, and a results screen with score-based messages. I'd never built and shipped something end-to-end like that before, let alone submitted it to a community challenge. Going from "let's see if this works in the simulator" to "this is live on GitHub with a demo video and a published writeup" in one sitting was honestly a bit of a blur. Then I Detoured Into Google AI Studio A few days later, I worked through the DEV Education Track for Google AI Studio and built MascotCraft Studio — an app that generates coding mascots using Gemini and Imagen. One prompt later, I had a fully deployed web app and a mascot named Octo-Byte , a cheerful deep-sea developer with eight arms and a talent for multitasking. That post sparked one of my favorite discussions so far — a few comments turned into a genuinely interesting conversation about how AI is shifting the bottleneck from "can I build this" to "what should I build, and how do I know if it's good." Not at all what I expected from a post about a cartoon octopus. The Badges Somewhere in all of this, I picked up: A 1 Week Community Wellness Streak badge, just from commenting on other people's

As a backend developer, I sometimes help companies evaluate candidates by reviewing their recorded technical interviews. However, over time, I’ve noticed a deeply ingrained misconception. When discussing memory management or data streaming, many developers explicitly state: "Iterators in Python are inherently eager. If you want true lazy loading or lazy evaluation, you have to use generators and the yield keyword." This misconception is common. Many popular bootcamps and online courses introduce lazy evaluation exclusively through generators . Custom class-based iterators are usually skipped or dismissed as boilerplate-heavy OOP theory rarely used in production Python. This confusion is further reinforced by two common educational simplifications : The List vs. Generator Expression Analogy: Beginners are taught that square brackets [...] (list comprehensions) are eager and take up memory, while parentheses (...) (generator expressions) are lazy. This often creates a false binary mental model: "generators = lazy, everything else = eager." Standard "Textbook" Examples: When courses demonstrate a custom iterator, they usually write a basic class that accepts an already fully loaded list in its __init__ and simply increments an index in __next__ . While this is valid for in-memory data, it leads developers to assume that custom iterators inherently require loading all data upfront. In reality, generators are a specialized language feature designed to implement the iterator protocol automatically . They comply with the exact same interface ( __iter__ and __next__ ). A generator is lazy not because of some magical property of the yield keyword, but simply because it adheres to this underlying contract. To show that custom iterators can be lazy without using any generators or yield keywords, I’ve put together a lightweight and reproducible benchmark. 🧪 The Experiment: Proving Lazy Loading with Custom Iterators Suppose we need to read a database export file ( test_users_db.

🚀 Technical Briefing: This tutorial is part of our deep-dive series on Agentic Workflows at Gate of AI . For the full technical breakdown, interactive code sandbox, and the native Arabic translation, visit the original article here . <span>Tutorial</span> <span>Advanced</span> <span>⏱ 45 min read</span> <span>© Gate of AI 2026-06-16</span> Learn how to fine-tune large language models (LLMs) to enhance communication capabilities in specialized domains, such as homeless shelters, using modern AI tools and techniques like LoRA. Prerequisites Python 3.10+ OpenAI API key (latest version) Familiarity with machine learning concepts What We're Building In this tutorial, we will embark on a journey to fine-tune a large language model (LLM) to cater to the specific communication needs of homeless shelters. By leveraging a bespoke dataset compiled from the Youth Spirit Artworks (YSA) Tiny House Empowerment Village website, we aim to create a model that can effectively assist in the nuances of communication required in such environments. The finished project will result in a model capable of generating contextually relevant and empathetic responses to inquiries typical within the homeless shelter community. This involves structuring data into a standardized question-and-answer format to enhance the training process, ensuring the model's outputs are aligned with the communication style and needs of the target audience. Setup and Installation To begin, we need to set up our development environment with the necessary tools and libraries for model fine-tuning. We'll be using Python along with the OpenAI library to interact with the LLMs. pip install openai pandas numpy Additionally, you'll need to configure environment variables to securely store your API keys. This ensures that sensitive information is not hardcoded into your scripts. .env file OPENAI_API_KEY=your_openai_api_key Step 1: Data Collection and Preparation The first step in fine-tuning our model involves collecting and

Something feels different about security incidents lately. Breaches, leaks, account takeovers, phishing campaigns they're not new. But their frequency, sophistication, and scale seem to be growing at a pace that feels genuinely alarming. Instagram accounts hacked overnight. Corporate systems compromised in hours. Phishing emails that sound disturbingly human. As someone studying AI & Big Data, I can't help but ask: is AI responsible for this? And if so, how? I think the honest answer is: yes but in two very different ways. The two faces of AI in cybersecurity When we talk about AI and cyberattacks, most people imagine one scenario: hackers using AI to attack systems faster and smarter. That's real. But it's only half the picture. The other half is something we talk about far less: the vulnerabilities that come from integrating AI into systems in the first place. These are two very different problems. And conflating them leads to the wrong solutions. Problem 1: AI is expanding the attack surface Every time a platform integrates an AI feature, they're adding something new to their infrastructure. And new infrastructure means new potential vulnerabilities. AI systems require: Massive data pipelines more data flowing through more systems APIs connecting multiple services more endpoints that can be exploited Third-party models and tools more external dependencies, more trust relationships Real-time processing less time to detect anomalies before damage is done Many organizations are integrating AI features faster than their security teams can audit them. And the consequences are already visible. In June 2026 , hackers reportedly manipulated AI-powered support systems to gain unauthorized access to Instagram accounts. The attack didn't target traditional software vulnerabilities it targeted the AI system itself , exploiting the automated account recovery flow that Meta had built with AI. This is the new reality: attackers are no longer just targeting your code. They're ta

There is a persistent myth that to build a worthy code assistant, you absolutely must use GPT or Claude. This is false. You don't need a 1-trillion parameter model. You need a small local model and extremely rigorous engineering around it. This is the direction history is taking for companies. As Mark Zuckerberg mentioned, the future isn't a single omniscient model, but "every company having its own specialized AI" . And this specialization necessarily involves fine-tuning and local deployment (or on sovereign servers) to guarantee data security. The thesis behind the construction of Vibrisse Agent can be summed up in one sentence: Small models, Great tools. In this article, I will detail the technical stack and concrete engineering solutions I implemented to tame a local model and make it reliable in production: LangGraph, Ollama, FastAPI, React (no build step, with embedded custom CSS) , all running on a machine with 32 GB of RAM. For the curious who want to run the agent on their machine right now: // MacOs / Linux curl -sSL https://agent.vibrisse-studio.dev/install.sh | bash // Windows irm https://agent.vibrisse-studio.dev/install.ps1 | iex Architecture: Why a State Machine (LangGraph)? At first, when building an LLM application, we tend to think in sequential chains: Input -> Prompt -> Tool -> Output . The problem is that if one node fails, the whole chain stops without us being able to catch the error or understand the context of the crash. That's where LangGraph comes in. Vibrisse's architecture isn't a chain, it's a state machine . Every node in the graph has a very precise responsibility, shares a global conversation state, and uses conditional transitions to move to the next node. I implemented the Supervisor / Worker pattern: The Supervisor analyzes the user's intent. It does nothing else but route. It dispatches the task to specialized Workers (the RAG Worker, the Search Worker, the Ghost Worker...). If a Worker fails or needs more information, it can se

Il y a un mythe persistant selon lequel pour construire un assistant de code digne de ce nom, il faut absolument utiliser GPT ou Claude. C'est faux. Vous n'avez pas besoin d'un modèle à 1 trillion de paramètres. Vous avez besoin d'un modèle local de taille réduite et d'une ingénierie extrêmement rigoureuse autour de lui. C'est d'ailleurs le sens de l'histoire pour les entreprises. Comme l'évoquait Mark Zuckerberg, l'avenir n'est pas à un modèle omniscient unique, mais à "chaque entreprise avec sa propre IA spécialisée" . Et cette spécialisation passe obligatoirement par le fine-tuning et le déploiement local (ou sur serveurs souverains) pour garantir la sécurité des données. La thèse derrière la construction de Vibrisse Agent tient en une phrase : Small models, Great tools. Dans cet article, je vais détailler la stack technique et les solutions d'ingénierie concrètes que j'ai mises en place pour dompter un modèle local et le rendre fiable en production : LangGraph, Ollama, FastAPI, React (sans build step, avec CSS custom embarqué) , le tout tournant sur une machine avec 32 Go de RAM. Pour les curieux qui souhaitent lancer l'agent sur leur machine dès maintenant : // MacOs / Linux curl -sSL https://agent.vibrisse-studio.dev/install.sh | bash // Windows irm https://agent.vibrisse-studio.dev/install.ps1 | iex L'Architecture : Pourquoi une Machine à États (LangGraph) ? Au début, quand on construit une application LLM, on a tendance à penser en chaîne séquentielle : Input -> Prompt -> Outil -> Output . Le problème, c'est que si un nœud échoue, toute la chaîne s'arrête sans qu'on puisse rattraper l'erreur ou comprendre le contexte du plantage. C'est là qu'intervient LangGraph . L'architecture de Vibrisse n'est pas une chaîne, c'est une machine à états . Chaque nœud du graphe a une responsabilité très précise, partage un état global de la conversation, et utilise des transitions conditionnelles pour passer au nœud suivant. J'ai implémenté le pattern Supervisor / Worker : L

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