Big data

417
Ładowanie...
EBOOK

Hands-On Transfer Learning with Python. Implement advanced deep learning and neural network models using TensorFlow and Keras

Dipanjan Sarkar, Raghav Bali, Tamoghna Ghosh

Transfer learning is a machine learning (ML) technique where knowledge gained during training a set of problems can be used to solve other similar problems. The purpose of this book is two-fold; firstly, we focus on detailed coverage of deep learning (DL) and transfer learning, comparing and contrasting the two with easy-to-follow concepts and examples. The second area of focus is real-world examples and research problems using TensorFlow, Keras, and the Python ecosystem with hands-on examples. The book starts with the key essential concepts of ML and DL, followed by depiction and coverage of important DL architectures such as convolutional neural networks (CNNs), deep neural networks (DNNs), recurrent neural networks (RNNs), long short-term memory (LSTM), and capsule networks. Our focus then shifts to transfer learning concepts, such as model freezing, fine-tuning, pre-trained models including VGG, inception, ResNet, and how these systems perform better than DL models with practical examples. In the concluding chapters, we will focus on a multitude of real-world case studies and problems associated with areas such as computer vision, audio analysis and natural language processing (NLP).By the end of this book, you will be able to implement both DL and transfer learning principles in your own systems.

418
Ładowanie...
EBOOK

Hands-On Unsupervised Learning with Python. Implement machine learning and deep learning models using Scikit-Learn, TensorFlow, and more

Giuseppe Bonaccorso

Unsupervised learning is about making use of raw, untagged data and applying learning algorithms to it to help a machine predict its outcome. With this book, you will explore the concept of unsupervised learning to cluster large sets of data and analyze them repeatedly until the desired outcome is found using Python.This book starts with the key differences between supervised, unsupervised, and semi-supervised learning. You will be introduced to the best-used libraries and frameworks from the Python ecosystem and address unsupervised learning in both the machine learning and deep learning domains. You will explore various algorithms, techniques that are used to implement unsupervised learning in real-world use cases. You will learn a variety of unsupervised learning approaches, including randomized optimization, clustering, feature selection and transformation, and information theory. You will get hands-on experience with how neural networks can be employed in unsupervised scenarios. You will also explore the steps involved in building and training a GAN in order to process images.By the end of this book, you will have learned the art of unsupervised learning for different real-world challenges.

419
Ładowanie...
EBOOK

Hands-On Web Scraping with Python. Perform advanced scraping operations using various Python libraries and tools such as Selenium, Regex, and others

Anish Chapagain

Web scraping is an essential technique used in many organizations to gather valuable data from web pages. This book will enable you to delve into web scraping techniques and methodologies.The book will introduce you to the fundamental concepts of web scraping techniques and how they can be applied to multiple sets of web pages. You'll use powerful libraries from the Python ecosystem such as Scrapy, lxml, pyquery, and bs4 to carry out web scraping operations. You will then get up to speed with simple to intermediate scraping operations such as identifying information from web pages and using patterns or attributes to retrieve information. This book adopts a practical approach to web scraping concepts and tools, guiding you through a series of use cases and showing you how to use the best tools and techniques to efficiently scrape web pages. You'll even cover the use of other popular web scraping tools, such as Selenium, Regex, and web-based APIs.By the end of this book, you will have learned how to efficiently scrape the web using different techniques with Python and other popular tools.

422
Ładowanie...
EBOOK

Healthcare Analytics Made Simple. Techniques in healthcare computing using machine learning and Python

Vikas (Vik) Kumar, Shameer Khader

In recent years, machine learning technologies and analytics have been widely utilized across the healthcare sector. Healthcare Analytics Made Simple bridges the gap between practising doctors and data scientists. It equips the data scientists’ work with healthcare data and allows them to gain better insight from this data in order to improve healthcare outcomes.This book is a complete overview of machine learning for healthcare analytics, briefly describing the current healthcare landscape, machine learning algorithms, and Python and SQL programming languages. The step-by-step instructions teach you how to obtain real healthcare data and perform descriptive, predictive, and prescriptive analytics using popular Python packages such as pandas and scikit-learn. The latest research results in disease detection and healthcare image analysis are reviewed.By the end of this book, you will understand how to use Python for healthcare data analysis, how to import, collect, clean, and refine data from electronic health record (EHR) surveys, and how to make predictive models with this data through real-world algorithms and code examples.

424
Ładowanie...
EBOOK

Hurtownie danych. Od przetwarzania analitycznego do raportowania

Adam Pelikant

Spec od hurtowni danych? Zawsze będzie pilnie potrzebny! Jak stworzyć strukturę hurtowni danych i dokonać ich integracji? Jak przeprowadzić analizę danych z wykorzystaniem rozszerzenia MDX SQL? Do czego potrzebne jest raportowanie? Idea hurtowni danych ściśle wiąże się z ich kolosalnymi ilościami, gromadzonymi podczas tysięcy różnych sytuacji — przy dowolnej transakcji, w urzędzie, na lotnisku, w internecie… Nawet nasze połączenia telefoniczne są przechowywane przez operatora. Te wszystkie dane trzeba gdzieś pomieścić, sensownie posegregować i zapewnić sobie możliwość sięgnięcia do wybranego ich zakresu bez długotrwałych poszukiwań. Taką możliwość dają właśnie hurtownie danych — przemyślane, bardzo pojemne bazy, oferujące zarówno integrację wprowadzanych danych, jak i znakomite mechanizmy ich przeszukiwania. Jeśli chcesz poszerzyć swoją wiedzę na temat tworzenia i przeglądania zawartości hurtowni danych, trafiłeś pod właściwy adres! Książka "Hurtownie danych. Od przetwarzania analitycznego do raportowania" zawiera materiał przeznaczony nie tylko dla studentów wydziałów informatycznych, ale także dla pasjonatów tej tematyki oraz specjalistów zainteresowanych poszerzeniem wiedzy. W możliwie najprostszy, praktyczny sposób opisano w niej składnię i postać zapytań analitycznych, strukturę hurtowni danych oraz kwestię ich integracji i wizualnego tworzenia elementów hurtowni. Znajdziesz tu także omówienie analizy danych z wykorzystaniem rozszerzenia MDX SQL oraz zastosowań raportowania. Zapoznanie się z tymi informacjami oraz prześledzenie zgromadzonych tu przykładów pozwoli Ci zrozumieć problemy powstające przy budowie hurtowni danych i wykorzystać tę wiedzę we własnych projektach. Zapytania analityczne Struktura hurtowni danych Integracja danych Wizualne tworzenie elementów hurtowni danych Analiza danych z wykorzystaniem rozszerzenia MDX SQL Raportowanie Od bazy do hurtowni danych… Skocz na głęboką wodę!