Informatyka

Extreme DAX. Take your Power BI and Fabric analytics skills to the next level - Second Edition

Michiel Rozema, Madzy Stikkelorum, Henk Vlootman, Jeroen...

This book helps experienced analysts unlock the full potential of DAX in Power BI and Microsoft Fabric to build scalable, production-ready analytics solutions.You’ll begin by strengthening your understanding of semantic models, data modeling, and evaluation context—the foundation of reliable analytics. Instead of isolated examples, the book uses real-world scenarios such as inventory analysis, benchmarking, and data security to show how advanced DAX calculations are applied in practice.As you progress, you’ll master advanced techniques including context transition, table functions, calculation groups, field parameters, and custom calendars. You’ll also explore analytical methods such as regression and goal-seeking to generate deeper insights from your data.With step-by-step guidance and practical PBIX examples, you’ll learn how to design efficient models, avoid common pitfalls, and implement reusable calculations. By the end, you’ll be able to create advanced DAX measures and high-performance Power BI solutions for complex analytical requirements.

eZ Publish 4: Enterprise Web Sites Step-by-Step

Francesco Fullone

eZ Publish provides developers with a structure to build highly impressive applications and then quickly deploy them into a live environment. eZ Publish is complex, with a steep learning curve, but with the right direction it offers great flexibility and power. What makes eZ Publish special is not the long list of features, but what's going on behind the scenes.Created specifically for newcomers to eZ Publish, and using an example Magazine web site, this book focuses on designing, building and deploying eZ Publish to create an enterprise site quickly and easily.This tutorial takes eZ Publish's steep learning curve head-on, and walks you through the process of designing and building content-rich web sites. It makes the unrivalled power and flexibility of eZ Publish accessible to all developers.The book is organized around technical topics, which are handled in depth, with a general progression that follows the learning experience of the reader, and features a single magazine web site project from installation to completion and deployment. This hands-on guide helps the reader to understand the Content Management System to create a web 2.0-ready web site by creating new extensions or overriding the existing ones. In turn, it helps you to become confident when working in the eZ Publish administration area and offers an environment in which you can practice while working through the chapters.

F# High Performance. Increase your F# programming productivity and focus on performance optimization with best practices, expert techniques, and more

Eriawan Kusumawardhono

F# is a functional programming language and is used in enterprise applications that demand high performance. It has its own unique trait: it is a functional programming language and has OOP support at the same time.This book will help you make F# applications run faster with examples you can easily break down and take into your own work. You will be able to assess the performance of the program and identify bottlenecks. Beginning with a gentle overview of concurrency features in F#, you will get to know the advanced topics of concurrency optimizations in F#, such as F# message passing agent of MailboxProcessor and further interoperation with .NET TPL. Based on this knowledge, you will be able to enhance the performance optimizations when implementing and using other F# language features.The book also covers optimization techniques by using F# best practices and F# libraries. You will learn how the concepts of concurrency and parallel programming will help in improving the performance. With this, you would be able to take advantage of multi-core processors and track memory leaks, root causes, and CPU issues. Finally, you will be able to test their applications to achieve scalability.

Facebook Graph API Development with Flash. Build social Flash applications fully integrated with the Facebook Graph API

Michael James Williams

The Facebook platform provides you with an ideal solution for building rich, social experiences on the web to develop an effective user experience application. Combined with Flash which effectively enables social interactions, you can create a fully functional application on Facebook. If you've been waiting to get started with your own applications and games on Facebook, with this book you don't have to wait any longer.This book takes you through everything you need to know to integrate your AS3 apps and games with Facebook accompanied by illustrative screenshots and short quizzes.It presents you with in depth coverage of the key underlying concepts such as creating a basic application that runs inside Facebook and exploring the Graph API which greatly simplifies how developers can retrieve data. This book also covers topics on security, permissions and authentication features on Facebook.This beginner's guide starts off by teaching you about retrieving simple public data and then rapidly working your way up to authenticating users, building powerful searches across the entire database, and uploading photos and other content.Throughout the book, you'll learn by building two fundamental components: an RIA Facebook interface and an AS3 SDK that you can drop into any project to add Facebook integration. This easy-to-understand guide has everything written as AS3-only projects with publicly available components, so you can follow along whether you use Flash Pro, Flex, or MXMLC – as long as you know AS3!This hands-on tutorial will present you with a whole new perspective of the three core aspects of Facebook – searching, retrieving, and updating the data .This practical book focuses on how to set up an application on Facebook and how to deal with different contexts like AIR.By the end of this book, you will be confident enough to set up your own application and create social interactions for users to share on Facebook.

Fairness in Generative AI. A Practical Guide to Benchmarking, Bias Mitigation, and Responsible AI Engineering

Prasanna Vijayanathan

As generative AI moves into critical applications like hiring, credit decisions, education, and healthcare, the potential for real-world harm escalates. When systems perpetuate stereotypes or skew outcomes based on identity, the impact goes far beyond poor user experience. It results in lost opportunities, violated dignity, and erosion of trust. This book offers practical methods for evaluating and ensuring fairness across text, image, and multimodal GenAI systems. You'll begin with fairness principles that matter for GenAI and learn how to translate philosophical constructs into engineering artifacts. Abstract goals become measurable requirements: what constitutes harm, which groups are in scope, how fairness is defined, and which trade-offs are acceptable. Next, design a benchmarking framework that integrates with existing pipelines. Thereafter, create scenario and prompt libraries, model sensitive attributes and intersections, and run evaluations through an orchestrated pipeline. Implement quantitative metrics and qualitative rubrics, add human review with rater training and agreement checks, and publish results as scorecards and dashboards. Finally, integrate fairness checks into CI and model release gates, monitor drift, and run incident response playbooks so benchmarks stay credible as models and norms evolve.

Fascynujący świat robotów. Przewodnik dla konstruktorów

John Baichtal

Własny robot w zasięgu Twoich możliwości! Największym marzeniem każdego majsterkowicza jest skonstruowanie własnego robota, który wyręczy w codziennych, monotonnych pracach. Robota, dzięki któremu majsterkowicz będzie miał więcej czasu na konstruowanie nowych niesamowitych układów. Jeżeli Ty również marzysz o własnym pomocniku, trafiłeś na doskonałą książkę! Błyskawicznie wprowadzi Cię ona w świat budowniczych robotów. Dzięki licznym ilustracjom oraz przejrzystym opisom będzie to niezwykle przyjemna i pouczająca lektura. Zacznij czytać już dzisiaj i sprawdź, jaki silnik dobrać, jak wykorzystać energię słoneczną oraz jak opracować układ zasilania. Po zapoznaniu się z mechanicznymi i elektronicznymi aspektami budowy przejdziesz do tematów związanych z programowaniem Twojego robota. Odkryj, jak budować instrukcje warunkowe, pętle oraz wykorzystać w pełni środowisko platformy Arduino. Zdobądź wiedzę na temat praktycznych zastosowań podczerwieni oraz przekonaj się, czy w Twoim warsztacie są wszystkie niezbędne narzędzia konstruktora robotów. Konstruuj roboty wyposażone w silniki i koła. Buduj roboty zasilane energią słoneczną. Steruj pracą robotów za pomocą modułów radiowych, sieci Wi-Fi, a nawet internetu. Zaprogramuj roboty tak, aby reagowały na sygnały odbierane przez czujniki. Steruj pracą robotów za pomocą standardowego pilota od telewizora. Zbuduj robota, który będzie wykrywał niechcianych gości i strzelał w nich plastikowymi rzutkami. Chwytaj i przenoś przedmioty za pomocą różnych manipulatorów. Wykonaj roboty zdolne do pracy na wodzie i pod wodą. Pracuj nad robotami, które będą malowały lub tworzyły inne dzieła sztuki. Wykonaj moduł umożliwiający Twojemu robotowi wysyłanie wiadomości SMS zawierających informacje o wykonaniu określonych czynności. Odkryj możliwości nowoczesnych zestawów komponentów przeznaczonych do samodzielnego konstruowania robotów. Skompletuj swoją idealną skrzynkę z narzędziami. Poznaj zasady, które pozwolą Ci na bezpieczną pracę nad robotami. Przewodnik konstruktora robotów!

FastAPI Cookbook. Develop high-performance APIs and web applications with Python

Giunio De Luca, Antonio Ferraro

FastAPI is a cutting-edge Python framework that is revolutionizing the way web apps and APIs are built. Known for its speed, simplicity, and scalability, FastAPI empowers developers to create high-performing applications with ease. This book will help you leverage FastAPI’s immense potential to handle high-traffic scenarios and integrate seamlessly with modern Python tools.The book begins by familiarizing you with the basics of setting up and configuring your FastAPI environment before moving to the intricacies of building RESTful APIs, managing data with SQL and NoSQL databases, and handling authentication and authorization. Next, you'll focus on advanced topics such as custom middleware, WebSocket communication, and integration with various Python libraries. Each chapter is meticulously crafted with practical recipes, progressing from foundational concepts to advanced features and best practices. The concluding chapters show you how to optimize performance, implement rate limiting, and execute background tasks, empowering you to become a proficient FastAPI developer.By the end of this book, you'll have gained the skills you need to migrate existing apps to FastAPI, and be equipped to tackle any challenge in the modern web development landscape, ensuring your apps are not only functional, but also efficient, secure, and scalable.

fastText Quick Start Guide. Get started with Facebook's library for text representation and classification

Joydeep Bhattacharjee

Facebook's fastText library handles text representation and classification, used for Natural Language Processing (NLP). Most organizations have to deal with enormous amounts of text data on a daily basis, and gaining efficient data insights requires powerful NLP tools such as fastText. This book is your ideal introduction to fastText. You will learn how to create fastText models from the command line, without the need for complicated code. You will explore the algorithms that fastText is built on and how to use them for word representation and text classification. Next, you will use fastText in conjunction with other popular libraries and frameworks such as Keras, TensorFlow, and PyTorch. Finally, you will deploy fastText models to mobile devices. By the end of this book, you will have all the required knowledge to use fastText in your own applications at work or in projects.