Build effective regression models in R to extract valuable insights from real data About This Book ? Implement different regression analysis techniques to solve common problems in data science - from data exploration to dealing with missing values ? From Simple Linear Regression to Logistic Regression - this book covers all regression techniques and their implementation in R ? A complete guide to building effective regression models in R and interpreting results from them to make valuable predictions Who This Book Is For This book is intended for budding data scientists and data analysts who want to implement regression analysis techniques using R. If you are interested in statistics, data science, machine learning and wants to get an easy introduction to the topic, then this book is what you need! Basic understanding of statistics and math will help you to get the most out of the book. Some programming experience with R will also be helpful What You Will Learn ? Get started with the journey of data science using Simple linear regression ? Deal with interaction, collinearity and other problems using multiple linear regression ? Understand diagnostics and what to do if the assumptions fail with proper analysis ? Load your dataset, treat missing values, and plot relationships with exploratory data analysis ? Develop a perfect model keeping overfitting, under-fitting, and cross-validation into consideration ? Deal with classification problems by applying Logistic regression ? Explore other regression techniques – Decision trees, Bagging, and Boosting techniques ? Learn by getting it all in action with the help of a real world case study. In Detail Regression analysis is a statistical process which enables prediction of relationships between variables. The predictions are based on the casual effect of one variable upon another. Regression techniques for modeling and analyzing are employed on large set of data in order to reveal hidden relationship among the variables. This book will give you a rundown explaining what regression analysis is, explaining you the process from scratch. The first few chapters give an understanding of what the different types of learning are – supervised and unsupervised, how these learnings differ from each other. We then move to covering the supervised learning in details covering the various aspects of regression analysis. The outline of chapters are arranged in a way that gives a feel of all the steps covered in a data science process – loading the training dataset, handling missing values, EDA on the dataset, transformations and feature engineering, model building, assessing the model fitting and performance, and finally making predictions on unseen datasets. Each chapter starts with explaining the theoretical concepts and once the reader gets comfortable with the theory, we move to the practical examples to support the understanding. The practical examples are illustrated using R code including the different packages in R such as R Stats, Caret and so on. Each chapter is a mix of theory and practical examples. By the end of this book you will know all the concepts and pain-points related to regression analysis, and you will be able to implement your learning in your projects. Style and approach An easy-to-follow step by step guide which will help you get to grips with real world application of Regression Analysis with R

Master the capabilities of PostgreSQL 10 to efficiently manage and maintain your database About This Book ? Your one-stop guide to mastering advanced concepts in PostgreSQL 10 with ease ? Master query optimization, replication, and high availability with PostgreSQL ? Extend the functionalities of your PostgreSQL instance to suit your organizational needs with minimal effort Who This Book Is For If you are a PostgreSQL data architect or an administrator and want to understand how to implement advanced functionalities and master complex administrative tasks with PostgreSQL 10, then this book is perfect for you. Prior experience of administrating a PostgreSQL database and a working knowledge of SQL are required to make the best use of this book. What You Will Learn ? Get to grips with the advanced features of PostgreSQL 10 and handle advanced SQL ? Make use of the indexing features in PostgreSQL and fine-tune the performance of your queries ? Work with stored procedures and manage backup and recovery ? Master replication and failover techniques ? Troubleshoot your PostgreSQL instance for solutions to common and not-so-common problems ? Learn how to migrate your database from MySQL and Oracle to PostgreSQL without any hassle In Detail PostgreSQL is an open source database used for handling large datasets (big data) and as a JSON document database. This book highlights the newly introduced features in PostgreSQL 10, and shows you how you can build better PostgreSQL applications, and administer your PostgreSQL database more efficiently. We begin by explaining advanced database design concepts in PostgreSQL 10, along with indexing and query optimization. You will also see how to work with event triggers and perform concurrent transactions and table partitioning, along with exploring SQL and server tuning. We will walk you through implementing advanced administrative tasks such as server maintenance and monitoring, replication, recovery, high availability, and much more. You will understand common and not-so-common troubleshooting problems and how you can overcome them. By the end of this book, you will have an expert-level command of advanced database functionalities and will be able to implement advanced administrative tasks with PostgreSQL 10. Style and approach This mastering-level guide delves into the advanced functionalities of PostgreSQL 10

A practical guide designed to get you from basics to current state of art in computer vision systems. About This Book ? Master the different tasks associated with Computer Vision and develop your own Computer Vision applications with ease ? Leverage the power of Python, Tensorflow, Keras, and OpenCV to perform image processing, object detection, feature detection and more ? With real-world datasets and fully functional code, this book is your one-stop guide to understanding Computer Vision Who This Book Is For This book is for machine learning practitioners and deep learning enthusiasts who want to understand and implement various tasks associated with Computer Vision and image processing in the most practical manner possible. Some programming experience would be beneficial while knowing Python would be an added bonus. What You Will Learn ? Learn the basics of image manipulation with OpenCV ? Implement and visualize image filters such as smoothing, dilation, histogram equalization, and more ? Set up various libraries and platforms, such as OpenCV, Keras, and Tensorflow, in order to start using computer vision, along with appropriate datasets for each chapter, such as MSCOCO, MOT, and Fashion-MNIST ? Understand image transformation and downsampling with practical implementations. ? Explore neural networks for computer vision and convolutional neural networks using Keras ? Understand working on deep-learning-based object detection such as Faster-R-CNN, SSD, and more ? Explore deep-learning-based object tracking in action ? Understand Visual SLAM techniques such as ORB-SLAM In Detail In this book, you will find several recently proposed methods in various domains of computer vision. You will start by setting up the proper Python environment to work on practical applications. This includes setting up libraries such as OpenCV, TensorFlow, and Keras using Anaconda. Using these libraries, you'll start to understand the concepts of image transformation and filtering. You will find a detailed explanation of feature detectors such as FAST and ORB; you'll use them to find similar-looking objects. With an introduction to convolutional neural nets, you will learn how to build a deep neural net using Keras and how to use it to classify the Fashion-MNIST dataset. With regard to object detection, you will learn the implementation of a simple face detector as well as the workings of complex deep-learning-based object detectors such as Faster R-CNN and SSD using TensorFlow. You'll get started with semantic segmentation using FCN models and track objects with Deep SORT. Not only this, you will also use Visual SLAM techniques such as ORB-SLAM on a standard dataset. By the end of this book, you will have a firm understanding of the different computer vision techniques and how to apply them in your applications. Style and approach Step-by-step guide filled with real-world, practical examples for understanding and applying various Computer Vision techniques

　　《轻松玩转旅游日语大全集》是为想去旅行但不懂日语的人量身造的旅游日语工具书。 　　本书精选交通、住宿、物、餐饮等13大主题，193种旅行中一定会遇到的场景，除了具备一般教材中*正规、*完整的用法外，还特别为游客贴身设计了“懒人极短句”，又好说又准确。两种说法一起学，遇到任何情况、在任何场合都能应对自如。另外考虑到游客的需求，还特别将本书设计成了1书2用的形式，左页学习表达自己，右页学习听懂对方的回答及类似回答，能听、会说让你玩得更尽兴！而且每个句子都贴心地给出了罗马音标，翻就会说，扫描二维码还能听地道日语，现学现用就能畅游日本！另外本书还附赠标准日语发音光盘，方便学习地道的语音、语调！ 　　走遍日本，带上这本就GO！

《零起?马上口说德语》包含两大内容！? 正文部分是实用会话。该部分共有15个话题，2 000多句实用会话，网罗了生活中的方方面面，包括日常寒暄、居家生活、生活服务、交通出行、休闲娱乐、欢度节日、恋爱婚姻、交际往来、情感表达、电话交流、旅游度假、乘机事宜、宾馆住宿、时尚话题和职场工作等。? 附录部分简单介绍了德语中的人体部位、肢体动作、数字时间、水果蔬菜、公共设施、季节天气、各行各业等表达，旨在扩大读者的知识面，使读者更好地了解德国文化。

Part 1 of the heart-pounding new thriller from the co-author of five No. 1 James Patterson bestsellers including Judge and Jury and Lifeguard, and the Sunday Times bestsellers The Blue Zone and Reckless.

This book can also be read with The Present by Charlotte Phillips. Two books, one unforgettable Christmas… 12 deadly gifts, one killer on a Christmas countdown… On the first day of Christmas my true love gave to me… this is one deadly Christmas that you can’t forget. The police are baffled by the ‘Santa’ killer, who sends his intended victims gruesome presents based on the twelve days of Christmas. When a young journalist receives a mutilated bird in the post, it’s a race against time to find the killer…

Joseph Polansky is a leading US astrologer who has been practising astrology for over 20 years.

Joseph Polansky is a leading US astrologer who has been practising astrology for over 20 years.

Joseph Polansky is a leading US astrologer who has been practising astrology for over 20 years.

'A breezy feel-good read that made me laugh out loud!' Phillipa Ashley, bestselling author of the Cornish Cafe series ‘A Year of New Adventures is like a dose of sunshine in book form. I can't wait to read what Maddie writes next.’ Chrissie Manby, author of The Worst Case Scenario Cookery Club

A shy soul and an adventurous heart. As the holidays approach, can they find happiness together? Maria Anne Davis was on her way to an exciting career as a chef in Dallas, until a terrible car accident left her blind. Ever resilient, Maria has reinvented her life on her own terms, starting a business out of her home kitchen, selling her jams and jellies to the local grocery. Maria loves romance novels, and despite her bold spirit, she fears she’ll never have a big love affair like ones her heroines experience. That is, until she realizes how much she cares about the quiet Wes Whitman, the owner of the grocery. Wes can’t keep Maria’s wildly popular jam on his shelves—just like he can’t keep the fierce, beautiful Maria out of his thoughts. But how could a firecracker like Maria come to love a shy, nervous man like him? Maybe all they need is a grand affair. Wes needs to convince Maria that some affairs last forever, though—just in time for Christmas.

Nothing will stop a Cahill cowboy from protecting what's his After a rocky marriage and even rockier divorce, Sheriff Flint Cahill finally has something good in his life again. Maggie Thompson's down-to-earth charm and beautiful smile hooked him from the start. When she disappears on the day they plan to start their lives together, all signs point to abduction—and his ex-wife. Functioning on adrenaline and instinct, Flint must call on his every resource to bring Maggie home before it's too late. His past and future are blurred. Maggie's only chance at surviving her abductor and a raging winter storm depends on an old vendetta that could destroy it all. But the Cahills don't give up easily, and Flint's love will have to be strong enough to conquer anything, including the unimaginable.

Celebrate the season with this warm-hearted charmer from #1 New York Times bestselling author Susan Mallery When Princess Bethany’s father, the king, sells one of his best stallions, she insists the animal get the royal treatment. Disguised as Beth Archer, a mere stable hand, she takes him to Happily Inc, California, a quaint wedding destination that's especially sparkly over the holidays. Rich women have no place on Cade Saunders' ranch. He wants a down-to-earth, girl-next-door type—like Beth Archer. After few cocoa-flavored kisses by the Christmas tree, Bethany begins to fall for her irresistibly handsome host. But will Cade still want her when he discovers she's more familiar with a crown than a cowboy hat?

The charming new bestseller from the No.1 bestselling author of The Canal Boat Cafe

The charming new bestseller from the No.1 bestselling author of The Canal Boat Cafe

Escape to the Devon coast, with Part One of a brand-new four-part serial from the author of Willow Cottage. Daisy Wickens has returned to Ottercombe Bay, the picturesque Devon town where her mother died when she was a girl. She plans to leave as soon as her great uncle’s funeral is over, but Great Uncle Reg had other ideas. He’s left Daisy a significant inheritance – an old building in a state of disrepair, which could offer exciting possibilities, but to get it she must stay in Ottercombe Bay for twelve whole months. With the help of a cast of quirky locals, a few gin cocktails and a black pug with plenty of attitude, Daisy might just turn this into something special. But can she ever hope to be happy among the ghosts of her past? Authors and readers love Bella Osborne’s gorgeous novels: ‘I really enjoy Bella Osborne’s books’ – Katie Fforde ‘An absolutely glorious read full of laugh out loud moments and beautifully observed characters who spring to life on the page’ Phillipa Ashley ‘A warm and engaging story with relatable characters who will worm their way into your heart. A great read!’ – Talli Roland ‘Loved it! Believable characters, a sweetly told, lovely story… a great read’ – Jane Lovering ‘Romance, comedy, and mystery abound in this delightful British novel’ – I Read That Book! ‘A great read, with some really special moments… so beautiful and romantic’ – Annie’s Book Corner ‘A well-written and charming tale.’ – Paris Baker’s Book Nook ‘I wasn't expecting a debut novel to be this good’ – The Bookish & The Romantic 'Makes me feel like I should be reading it while wearing a tea dress, drinking posh coffee from a china cup and eating Victoria sandwich cake with a dainty little fork. It's charming, adorable, amusing and all those sorts of words' – Escape Into Words 'This book is perfect chick lit' – Gidget Girls Reading

Escape to the Devon coast, with Part Three of a brand-new four-part serial from the author of Willow Cottage. Daisy Wickens has returned to Ottercombe Bay, the picturesque Devon town where her mother died when she was a girl. She plans to leave as soon as her great uncle’s funeral is over, but Great Uncle Reg had other ideas. He’s left Daisy a significant inheritance – an old building in a state of disrepair, which could offer exciting possibilities, but to get it she must stay in Ottercombe Bay for twelve whole months. With the help of a cast of quirky locals, a few gin cocktails and a black pug with plenty of attitude, Daisy might just turn this into something special. But can she ever hope to be happy among the ghosts of her past? Authors and readers love Bella Osborne’s gorgeous novels: ‘I really enjoy Bella Osborne’s books’ – Katie Fforde ‘An absolutely glorious read full of laugh out loud moments and beautifully observed characters who spring to life on the page’ Phillipa Ashley ‘A warm and engaging story with relatable characters who will worm their way into your heart. A great read!’ – Talli Roland ‘Loved it! Believable characters, a sweetly told, lovely story… a great read’ – Jane Lovering ‘Romance, comedy, and mystery abound in this delightful British novel’ – I Read That Book! ‘A great read, with some really special moments… so beautiful and romantic’ – Annie’s Book Corner ‘A well-written and charming tale.’ – Paris Baker’s Book Nook ‘I wasn't expecting a debut novel to be this good’ – The Bookish & The Romantic 'Makes me feel like I should be reading it while wearing a tea dress, drinking posh coffee from a china cup and eating Victoria sandwich cake with a dainty little fork. It's charming, adorable, amusing and all those sorts of words' – Escape Into Words 'This book is perfect chick lit' – Gidget Girls Reading

‘Claustrophobic and compelling’ KARIN SLAUGHTER ‘A rollercoaster with multiple twists’ DAILY MAIL ’A million dollar new story from a million selling author' SARAH PINBOROUGH Sometimes your first love won’t let you go… When Lou Wandsworth ran away to France with her teacher Mike Hughes, she thought he was the love of her life. But Mike wasn’t what he seemed and he left her life in pieces. Now 32, Lou discovers that he is involved with teenager Chloe Meadows. Determined to make sure history doesn’t repeat itself, she returns home to confront him for the damage he’s caused. But Mike is a predator of the worst kind, and as Lou tries to bring him to justice, it’s clear that she could once again become his prey… The million copy Sunday Times bestseller returns with a gripping psychological thriller that will have you on the edge of your seat. Praise for The Fear: ‘A skewering portrait of obsessive love and psychological manipulation, this book gets under the skin from the outset and won’t let you go until you’ve gasped at THAT ending. This is Taylor’s best book yet.’ CJ Cooke (author of I Know My Name) ‘Wow! Such a fast-paced, gripping, tense thriller. My heart was in my mouth at the end. Her best yet!’ Claire Douglas (author of Local Girl Missing)

‘Original and thought-provoking’ Sunday Times bestseller Katie Fforde ‘Simply gorgeous’ Sunday Times bestseller Milly Johnson P is for Paris where it all began. J is for Jealousy where it all came undone. But the most important letter is F. F is for Forgiveness, the hardest of all. Sisters Poppy and Rose used to be as close as two sisters could be, but it’s been over a decade since they last spoke. Until they both receive a call that tells them their mother has gone – without ever having the chance to see her daughters reunited. Andrea, though, wasn’t the kind of woman to let a little thing like death stand in the way of her plans. Knowing her daughters better than they know themselves, she has left behind one very special last gift – the A-Z of Everything. ‘Moving and uplifting all at once, I devoured this book about mothers, daughters, sisters and – ultimately – love’ Sunday Times bestseller Jane Costello ‘Funny and poignant – a celebration of life and the enduring power of love’ – Carys Bray, bestselling author of A Song for Issy Bradley ‘Heartbreakingly authentic, tender & inspiring. One of my top reads of 2017’ Irish Times bestseller Carmel Harrington

#1 New York Times Bestselling Author returns with a compelling story of love and family from the present day to World War II France An accomplished photographer, widow, and mother, Camille Palmer is content with the blessings she’s enjoyed. When her ageing father asks her to go with him to his native France, she has no idea that she’s embarking on an adventure that will utterly transform her. Returning to the place of his youth sparks unexpected memories―recollections that will lead Camille’s family back to the dark, terrifying days of the Second World War, where they will uncover their family’s surprising history. While Provence offers answers about her family’s past, Camille meets a handsome American historian who stirs a passion deep within her, and who may hold the key to her future…