Ebooki
13801
Ebook

Handel w przestrzeni wielkomiejskiej. Przykład Łodzi

Jerzy Dzieciuchowicz

Celem tego opracowania jest przede wszystkim identyfikacja stopnia zróżnicowania obecnej struktury przestrzennej placówek handlowych i ich pracowników, jak też dostępności tych placówek w przestrzeni wielkomiejskiej, na przykładzie Łodzi. Podjęto również próbę typologii przestrzennej łódzkiego handlu. Tło dla tej problematyki stanowiło naświetlenie genezy oraz głównych nurtów badawczych nowej geografii handlu, w nawiązaniu do tradycyjnego podejścia stosowanego w tej dziedzinie geografii ekonomicznej. Omówienie współczesnej roli handlu w kształtowaniu przestrzeni miejskiej Łodzi zostało też poprzedzone charakterystyką rozwoju historycznego działalności handlowej w mieście, przy uwypukleniu jej przemian strukturalnych i wpływu tej sfery życia gospodarczego na kierunki zagospodarowania przestrzennego miasta.

13802
Ebook

Handlarze Arabskich Niewolników

Marcin Margielewski

Są ludzie, których brak empatii pozbawia człowieczeństwa do tego stopnia, że odbierają je innym. Abi najpierw została sprzedana przez swojego ojca za długi, a potem przekazywano ją z rąk do rąk jeszcze pięć razy. Dziś wciąż jest towarem. Sarika miała kilkanaście lat, gdy wywołano u niej przedwczesną menopauzę, by miesiączka nie przeszkadzała jej w pracy. Ni Ketut nie mogła spłacić pożyczki, dlatego wraz z kilkuletnimi wnukami zmuszona została do wygrzebywania ziarenek kawy ze zwierzęcych odchodów Mimo rozwoju cywilizacji ludzie wciąż są towarem. Marcin Margielewski z bliska przygląda się procederowi handlu nimi. W trakcie swoich podróży, których efektem jest ta książka, dostaje propozycje przeprowadzania rekrutacji w Polsce. Jest świadkiem zakupów w agencji pośrednictwa pracy, która obiecuje spełnienie marzeń, a tak naprawdę handluje żywym towarem. Poznaje tych, którzy w zdesperowanych biedą istotach widzą wyłącznie sposób na wzbogacenie się. Ta książka to epilog dla historii opisanych w trylogii Niewolnicy i dowód na to, że nawet jeśli coś nas bezpośrednio nie dotyka, wcale nie oznacza to, że nas nie dotyczy.

13803
Ebook

Handlarze jabłek (#73)

Maciej Zenon Bordowicz

Co się stało w małym mieście u schyłku II wojny światowej? Kim jest tajemniczy Grom, którego boją się nawet funkcjonariusze milicji w Podcieniach? I ile można zaryzykować, kierując się poczuciem obywatelskiego obowiązku? Oto intrygująca powieść o losach Polaków z sennego miasteczka, którym trudno skłonić do zeznań jednego z członków bandy i zrozumieć motywy działania urzędników z prokuratury. Znajdziesz tu wiele zaskakujących sytuacji na czele z przebraniem i transportem rannego w ciężarówce pełnej jabłek. Jeśli lubisz kryminały sensacyjne osadzone w ponurych i kontrowersyjnych realiach wczesnego PRL-u, ta książka ze znanej serii Ewa wzywa 07, wydawanej przez Państwowe Wydawnictwo Iskry w latach 1968-1989 pozycją idealną właśnie dla Ciebie. W magazynie usłyszeli strzał. Melancholik dopadł zabitego deskami okna. Zaczął nasłuchiwać, ściągając z dłoni skórkowe rękawiczki. Irka leżała ciągle na rozsypanych jabłkach, jej policzki poznaczone były sinymi pręgami. Ten z latarką znalazł na jednej z półek duży pilnik. Użył go teraz jako łomu, podważając jedną z desek w zabitym oknie. Strzał jakby stamtąd nasłuchiwał Melancholik Od strony posterunku Płomień? Nie mógł wpaść tak głupio!... rzucił ten z latarką. PRL kryminalnie PRL kryminalnie seria składająca się z powieści milicyjnych najbardziej poczytnych autorek i autorów czasów PRL. Maciej Bordowicz (ur. 16 września 1941 w Mińsku Mazowieckim, zm. 6 października 2009 r. w Warszawie) polski pisarz, aktor, reżyser filmów, sztuk teatralnych, telewizyjnych i słuchowisk. Absolwent Wydziału Aktorskiego i Reżyserskiego PWST w Warszawie. Odznaczony Złotym Krzyżem Zasługi.

13804
Ebook

Handlarze niewolników

E.M. Thorhall

Kontynuacja powieści "Zamek Laghortów". Wydarzenia w średniowiecznym zamku nabierają tempa. Kyla przykładnie trenuje sztuki walki pod okiem Mortha. Dziewczyna nie zapomina jednak o swoim domu i codziennie samotnie odwiedza rodzinną wioskę. Któregoś dnia nie zastaje tam żywej duszy, tylko sterty trupów mężczyzn i starców. Po reszcie nie ma śladu. Morth nie ma wątpliwości, że sprawcami rzezi są handlarze niewolników. Wraz z dziewczyną rzuca się w pościg, którego celem jest odbicie uprowadzonych bliskich Kyli. Na ich drodze raz po raz stają zjawy i niezwykłe, baśniowe stworzenia.

13805
Ebook

Handlowanie to gra

Wojciech Haman, Jerzy Gut

Książka ta została napisana dla tych, którzy poszukują większej satysfakcji w roli handlowca, szanują swój zawód i chcą być profesjonalistami. Jest to praktyczny poradnik dla wszystkich, którzy obsługują klienta i sprzedają produkty swojej firmy. Specyfiką tej książki jest to, że dotyczy polskiego rynku, polskich klientów i polskich handlowców. Autorzy, korzystając z dziesięcioletniego doświadczenia w szkoleniu pracowników firm handlowych, opisują konkretne narzędzia: zjednywanie klienta i rozpoznawania jego potrzeb, radzenia sobie z grami kupieckimi, budowania profesjonalnej podstawy handlowej. Handlowanie to sztuka zadowolenia klienta bez ulegania jego wygórowanym żądaniom. Do każdego klienta prowadzi jakaś droga, tylko nie zawsze handlowcy mają odwagę na nią wkroczyć.

13806
Ebook

Hands-On Agile Software Development with JIRA. Design and manage software projects using the Agile methodology

David Harned

As teams scale in size, project management can get very complicated. One of the best tools to deal with this kind of problem is JIRA. This book will start by organizing your project requirements and the principles of Agile development to get you started. You will then be introduced to set up a JIRA account and the JIRA ecosystem to help you implement a dashboard for your team's work and issues. You will learn how to manage any issues and bugs that might emerge in the development stage. Going ahead, the book will help you build reports and use them to plan the releases based on the study of the reports. Towards the end, you will come across working with the gathered data and create a dashboard that helps you track the project's development.

13807
Ebook

Hands-On Android UI Development. Design and develop attractive user interfaces for Android applications

Jason Morris

A great user interface (UI) can spell the difference between success and failure for any new application. This book will show you not just how to code great UIs, but how to design them as well. It will take novice Android developers on a journey, showing them how to leverage the Android platform to produce stunning Android applications. Begin with the basics of creating Android applications and then move on to topics such as screen and layout design. Next, learn about techniques that will help improve performance for your application. Also, explore how to create reactive applications that are fast, animated, and guide the user toward their goals with minimal distraction. Understand Android architecture components and learn how to build your application to automatically respond to changes made by the user. Great platforms are not always enough, so this book also focuses on creating custom components, layout managers, and 2D graphics. Also, explore many tips and best practices to ease your UI development process. By the end, you'll be able to design and build not only amazing UIs, but also systems that provide the best possible user experience.

13808
Ebook

Hands-On Application Development with PyCharm. Accelerate your Python applications using practical coding techniques in PyCharm

Quan Nguyen

JetBrain’s PyCharm is the most popular Integrated Development Environment (IDE) used by the Python community thanks to its numerous features that facilitate faster, more accurate, and more productive programming practices. However, the abundance of options and customizations can make PyCharm seem quite intimidating.Hands-on Application Development with PyCharm starts with PyCharm’s installation and configuration process, and systematically takes you through a number of its powerful features that can greatly improve your productivity. You’ll explore code automation, version control, graphical debugging/testing, management of virtual environments, and much more. Finally, you’ll delve into specific PyCharm features that support web development and data science, two of the fastest growing applications in Python programming. These include the integration of the Django framework as well as the extensive support for IPython and Jupyter Notebook.By the end of this PyCharm book, you will have gained extensive knowledge of the tool and be able to implement its features and make the most of its support for your projects.

13809
Ebook

Hands-On Application Development with PyCharm. Build applications like a pro with the ultimate python development tool - Second Edition

Bruce M. Van Horn II, Quan Nguyen

In the quest to develop robust, professional-grade software with Python and meet tight deadlines, it’s crucial to have the best tools at your disposal. In this second edition of Hands-on Application Development with PyCharm, you’ll learn tips and tricks to work at a speed and proficiency previously reserved only for elite developers.To achieve that, you’ll be introduced to PyCharm, the premiere professional integrated development environment for Python programmers among the myriad of IDEs available. Regardless of how Python is utilized, whether for general automation scripting, utility creation, web applications, data analytics, machine learning, or business applications, PyCharm offers tooling that simplifies complex tasks and streamlines common ones. In this book, you'll find everything you need to harness PyCharm's full potential and make the most of Pycharm's productivity shortcuts. The book comprehensively covers topics ranging from installation and customization to web development, database management, and data analysis pipeline development helping you become proficient in Python application development in diverse domains.By the end of this book, you’ll have discovered the remarkable capabilities of PyCharm and how you can achieve a new level of capability and productivity.

13810
Ebook

Hands-On Application Penetration Testing with Burp Suite. Use Burp Suite and its features to inspect, detect, and exploit security vulnerabilities in your web applications

Carlos A. Lozano, Dhruv Shah, Riyaz Ahemed Walikar

Burp suite is a set of graphic tools focused towards penetration testing of web applications. Burp suite is widely used for web penetration testing by many security professionals for performing different web-level security tasks.The book starts by setting up the environment to begin an application penetration test. You will be able to configure the client and apply target whitelisting. You will also learn to setup and configure Android and IOS devices to work with Burp Suite. The book will explain how various features of Burp Suite can be used to detect various vulnerabilities as part of an application penetration test. Once detection is completed and the vulnerability is confirmed, you will be able to exploit a detected vulnerability using Burp Suite. The book will also covers advanced concepts like writing extensions and macros for Burp suite. Finally, you will discover various steps that are taken to identify the target, discover weaknesses in the authentication mechanism, and finally break the authentication implementation to gain access to the administrative console of the application.By the end of this book, you will be able to effectively perform end-to-end penetration testing with Burp Suite.

13811
Ebook

Hands-On Artificial Intelligence for Banking. A practical guide to building intelligent financial applications using machine learning techniques

Jeffrey Ng, Subhash Shah

Remodeling your outlook on banking begins with keeping up to date with the latest and most effective approaches, such as artificial intelligence (AI). Hands-On Artificial Intelligence for Banking is a practical guide that will help you advance in your career in the banking domain. The book will demonstrate AI implementation to make your banking services smoother, more cost-efficient, and accessible to clients, focusing on both the client- and server-side uses of AI.You’ll begin by understanding the importance of artificial intelligence, while also gaining insights into the recent AI revolution in the banking industry. Next, you’ll get hands-on machine learning experience, exploring how to use time series analysis and reinforcement learning to automate client procurements and banking and finance decisions. After this, you’ll progress to learning about mechanizing capital market decisions, using automated portfolio management systems and predicting the future of investment banking. In addition to this, you’ll explore concepts such as building personal wealth advisors and mass customization of client lifetime wealth. Finally, you’ll get to grips with some real-world AI considerations in the field of banking. By the end of this book, you’ll be equipped with the skills you need to navigate the finance domain by leveraging the power of AI.

13812
Ebook

Hands-On Artificial Intelligence for Beginners. An introduction to AI concepts, algorithms, and their implementation

Patrick D. Smith

Virtual Assistants, such as Alexa and Siri, process our requests, Google's cars have started to read addresses, and Amazon's prices and Netflix's recommended videos are decided by AI. Artificial Intelligence is one of the most exciting technologies and is becoming increasingly significant in the modern world.Hands-On Artificial Intelligence for Beginners will teach you what Artificial Intelligence is and how to design and build intelligent applications. This book will teach you to harness packages such as TensorFlow in order to create powerful AI systems. You will begin with reviewing the recent changes in AI and learning how artificial neural networks (ANNs) have enabled more intelligent AI. You'll explore feedforward, recurrent, convolutional, and generative neural networks (FFNNs, RNNs, CNNs, and GNNs), as well as reinforcement learning methods. In the concluding chapters, you'll learn how to implement these methods for a variety of tasks, such as generating text for chatbots, and playing board and video games.By the end of this book, you will be able to understand exactly what you need to consider when optimizing ANNs and how to deploy and maintain AI applications.

13813
Ebook

Hands-On Artificial Intelligence for Cybersecurity. Implement smart AI systems for preventing cyber attacks and detecting threats and network anomalies

Alessandro Parisi

Today's organizations spend billions of dollars globally on cybersecurity. Artificial intelligence has emerged as a great solution for building smarter and safer security systems that allow you to predict and detect suspicious network activity, such as phishing or unauthorized intrusions.This cybersecurity book presents and demonstrates popular and successful AI approaches and models that you can adapt to detect potential attacks and protect your corporate systems. You'll learn about the role of machine learning and neural networks, as well as deep learning in cybersecurity, and you'll also learn how you can infuse AI capabilities into building smart defensive mechanisms. As you advance, you'll be able to apply these strategies across a variety of applications, including spam filters, network intrusion detection, botnet detection, and secure authentication.By the end of this book, you'll be ready to develop intelligent systems that can detect unusual and suspicious patterns and attacks, thereby developing strong network security defenses using AI.

13814
Ebook

Hands-On Artificial Intelligence for IoT. Expert machine learning and deep learning techniques for developing smarter IoT systems

Amita Kapoor

There are many applications that use data science and analytics to gain insights from terabytes of data. These apps, however, do not address the challenge of continually discovering patterns for IoT data. In Hands-On Artificial Intelligence for IoT, we cover various aspects of artificial intelligence (AI) and its implementation to make your IoT solutions smarter.This book starts by covering the process of gathering and preprocessing IoT data gathered from distributed sources. You will learn different AI techniques such as machine learning, deep learning, reinforcement learning, and natural language processing to build smart IoT systems. You will also leverage the power of AI to handle real-time data coming from wearable devices. As you progress through the book, techniques for building models that work with different kinds of data generated and consumed by IoT devices such as time series, images, and audio will be covered. Useful case studies on four major application areas of IoT solutions are a key focal point of this book. In the concluding chapters, you will leverage the power of widely used Python libraries, TensorFlow and Keras, to build different kinds of smart AI models.By the end of this book, you will be able to build smart AI-powered IoT apps with confidence.

13815
Ebook

Hands-On Artificial Intelligence for Search. Building intelligent applications and perform enterprise searches

Devangini Patel

With the emergence of big data and modern technologies, AI has acquired a lot of relevance in many domains. The increase in demand for automation has generated many applications for AI in fields such as robotics, predictive analytics, finance, and more.In this book, you will understand what artificial intelligence is. It explains in detail basic search methods: Depth-First Search (DFS), Breadth-First Search (BFS), and A* Search, which can be used to make intelligent decisions when the initial state, end state, and possible actions are known. Random solutions or greedy solutions can be found for such problems. But these are not optimal in either space or time and efficient approaches in time and space will be explored. We will also understand how to formulate a problem, which involves looking at it and identifying its initial state, goal state, and the actions that are possible in each state. We also need to understand the data structures involved while implementing these search algorithms as they form the basis of search exploration. Finally, we will look into what a heuristic is as this decides the quality of one sub-solution over another and helps you decide which step to take.

13816
Ebook

Hands-On Artificial Intelligence on Amazon Web Services. Decrease the time to market for AI and ML applications with the power of AWS

Subhashini Tripuraneni, Charles Song

From data wrangling through to translating text, you can accomplish this and more with the artificial intelligence and machine learning services available on AWS.With this book, you’ll work through hands-on exercises and learn to use these services to solve real-world problems. You’ll even design, develop, monitor, and maintain machine and deep learning models on AWS.The book starts with an introduction to AI and its applications in different industries, along with an overview of AWS artificial intelligence and machine learning services. You’ll then get to grips with detecting and translating text with Amazon Rekognition and Amazon Translate. The book will assist you in performing speech-to-text with Amazon Transcribe and Amazon Polly. Later, you’ll discover the use of Amazon Comprehend for extracting information from text, and Amazon Lex for building voice chatbots. You will also understand the key capabilities of Amazon SageMaker such as wrangling big data, discovering topics in text collections, and classifying images. Finally, you’ll cover sales forecasting with deep learning and autoregression, before exploring the importance of a feedback loop in machine learning.By the end of this book, you will have the skills you need to implement AI in AWS through hands-on exercises that cover all aspects of the ML model life cycle.

13817
Ebook

Hands-On Artificial Intelligence with Java for Beginners. Build intelligent apps using machine learning and deep learning with Deeplearning4j

Nisheeth Joshi

Artificial intelligence (AI) is increasingly in demand as well as relevant in the modern world, where everything is driven by technology and data. AI can be used for automating systems or processes to carry out complex tasks and functions in order to achieve optimal performance and productivity.Hands-On Artificial Intelligence with Java for Beginners begins by introducing you to AI concepts and algorithms. You will learn about various Java-based libraries and frameworks that can be used in implementing AI to build smart applications. In addition to this, the book teaches you how to implement easy to complex AI tasks, such as genetic programming, heuristic searches, reinforcement learning, neural networks, and segmentation, all with a practical approach.By the end of this book, you will not only have a solid grasp of AI concepts, but you'll also be able to build your own smart applications for multiple domains.

13818
Ebook

Hands-On Artificial Intelligence with Unreal Engine. Everything you want to know about Game AI using Blueprints or C++

Francesco Sapio

Learning how to apply artificial intelligence ( AI ) is crucial and can take the fun factor to the next level, whether you're developing a traditional, educational, or any other kind of game. If you want to use AI to extend the life of your games and make them challenging and more interesting, this book is for you.The book starts by breaking down AI into simple concepts to get a fundamental understanding of it. Using a variety of examples, you will work through actual implementations designed to highlight key concepts and features related to game AI in UE4. You will learn to work through the built-in AI framework in order to build believable characters for every game genre (including RPG, Strategic, Platform, FPS, Simulation, Arcade, and Educational). You will learn to configure the Navigation, Environmental Querying, and Perception systems for your AI agents and couple these with Behavior Trees, all accompanied with practical examples. You will also explore how the engine handles dynamic crowds. In the concluding chapters, you will learn how to profile, visualize, and debug your AI systems to correct the AI logic and increase performance.By the end of the book, your AI knowledge of the built-in AI system in Unreal will be deep and comprehensive, allowing you to build powerful AI agents within your projects.

13819
Ebook

Hands-On Automated Machine Learning. A beginner's guide to building automated machine learning systems using AutoML and Python

Sibanjan Das, Umit Mert Cakmak

AutoML is designed to automate parts of Machine Learning. Readily available AutoML tools are making data science practitioners’ work easy and are received well in the advanced analytics community. Automated Machine Learning covers the necessary foundation needed to create automated machine learning modules and helps you get up to speed with them in the most practical way possible. In this book, you’ll learn how to automate different tasks in the machine learning pipeline such as data preprocessing, feature selection, model training, model optimization, and much more. In addition to this, it demonstrates how you can use the available automation libraries, such as auto-sklearn and MLBox, and create and extend your own custom AutoML components for Machine Learning. By the end of this book, you will have a clearer understanding of the different aspects of automated Machine Learning, and you’ll be able to incorporate automation tasks using practical datasets. You can leverage your learning from this book to implement Machine Learning in your projects and get a step closer to winning various machine learning competitions.

13820
Ebook

Hands-On Automation Testing with Java for Beginners. Build automation testing frameworks from scratch with Java

Rahul Shetty

Java is one of the most commonly-used software languages by programmers and developers. Are you from a non-technical background and looking to master Java for your automation needs? Then Hands-On Automation Testing with Java for Beginners is for you.This book provides you with efficient techniques to effectively handle Java-related automation projects. You will learn how to handle strings and their functions in Java. As you make your way through the book, you will get to grips with classes and objects, along with their uses. In the concluding chapters, you will learn about the importance of inheritance and exceptions with practical examples. By the end of this book, you will have gained comprehensive knowledge of Java.

13821
Ebook

Hands-On AWS Penetration Testing with Kali Linux. Set up a virtual lab and pentest major AWS services, including EC2, S3, Lambda, and CloudFormation

Karl Gilbert, Benjamin Caudill

The cloud is taking over the IT industry. Any organization housing a large amount of data or a large infrastructure has started moving cloud-ward — and AWS rules the roost when it comes to cloud service providers, with its closest competitor having less than half of its market share. This highlights the importance of security on the cloud, especially on AWS. While a lot has been said (and written) about how cloud environments can be secured, performing external security assessments in the form of pentests on AWS is still seen as a dark art. This book aims to help pentesters as well as seasoned system administrators with a hands-on approach to pentesting the various cloud services provided by Amazon through AWS using Kali Linux. To make things easier for novice pentesters, the book focuses on building a practice lab and refining penetration testing with Kali Linux on the cloud. This is helpful not only for beginners but also for pentesters who want to set up a pentesting environment in their private cloud, using Kali Linux to perform a white-box assessment of their own cloud resources. Besides this, the book covers a large variety of AWS services that are often overlooked during a pentest — from serverless infrastructure to automated deployment pipelines. By the end of this book, you will be able to identify possible vulnerable areas efficiently and secure your AWS cloud environment.

13822
Ebook

Hands-On Azure Digital Twins. A practical guide to building distributed IoT solutions

Alexander Meijers

In today’s world, clients are using more and more IoT sensors to monitor their business processes and assets. Think about collecting information such as pressure in an engine, the temperature, or a light switch being turned on or off in a room. The data collected can be used to create smart solutions for predicting future trends, creating simulations, and drawing insights using visualizations. This makes it beneficial for organizations to make digital twins, which are digital replicas of the real environment, to support these smart solutions.This book will help you understand the concept of digital twins and how it can be implemented using an Azure service called Azure Digital Twins. Starting with the requirements and installation of the Azure Digital Twins service, the book will explain the definition language used for modeling digital twins. From there, you'll go through each step of building digital twins using Azure Digital Twins and learn about the different SDKs and APIs and how to use them with several Azure services. Finally, you'll learn how digital twins can be used in practice with the help of several real-world scenarios.By the end of this book, you'll be confident in building and designing digital twins and integrating them with various Azure services.

13823
Ebook

Hands-On Azure for Developers. Implement rich Azure PaaS ecosystems using containers, serverless services, and storage solutions

Kamil Mrzygłód

Microsoft Azure is one of the fastest growing public cloud service providers in the market currently, and also holds the second highest market share after AWS. Azure has a sophisticated set of services that will help you build fault-tolerant and scalable cloud-based applications.Hands-On Azure for Developers will take you on a journey through multiple PaaS services available in Azure, including App Services, Functions, and Service Fabric, and explain in detail how to build a complete and reliable system with ease. You will learn about how to maximize your skills when building cloud-based solutions leveraging different SQL/NoSQL databases, serverless and messaging components, and even search engines such as Azure Search. In the concluding chapters, this book covers more advanced scenarios such as scalability best practices, serving static content with Azure CDN, and distributing loads with Azure Traffic Manager.By the end of the book, you will be able to build modern applications on the Azure cloud using the most popular and promising technologies, which will help make your solutions reliable, stable, and efficient.

13824
Ebook

Hands-On Big Data Analytics with PySpark. Analyze large datasets and discover techniques for testing, immunizing, and parallelizing Spark jobs

James Cross, Rudy Lai, Bartłomiej Potaczek

Apache Spark is an open source parallel-processing framework that has been around for quite some time now. One of the many uses of Apache Spark is for data analytics applications across clustered computers. In this book, you will not only learn how to use Spark and the Python API to create high-performance analytics with big data, but also discover techniques for testing, immunizing, and parallelizing Spark jobs.You will learn how to source data from all popular data hosting platforms, including HDFS, Hive, JSON, and S3, and deal with large datasets with PySpark to gain practical big data experience. This book will help you work on prototypes on local machines and subsequently go on to handle messy data in production and at scale. This book covers installing and setting up PySpark, RDD operations, big data cleaning and wrangling, and aggregating and summarizing data into useful reports. You will also learn how to implement some practical and proven techniques to improve certain aspects of programming and administration in Apache Spark.By the end of the book, you will be able to build big data analytical solutions using the various PySpark offerings and also optimize them effectively.