: Introduction -- Rhetorical agendas : a new framework for Senate representation -- Communicating Congressional priorities in the digital age -- "Short, not-so-sweet, and to (some) point" : Senate Tweets in 2013 and 2015 -- Categorizing Senators' Tweets and styles of communication -- Putting policy first : building a reputation as a policy wonk -- All politics is local : senators prioritize constituent service -- Partisan agendas : two parties, two patterns of partisan rhetoric -- Prioritization and representation : a future for social media and agenda-setting.

Using theory and data, Gainous and Wagner illustrate how online social media is bypassing traditional media and creating new forums for the exchange of political information and campaigning.

New communication technologies have reshaped media and politics. But who are the new power players? The Hybrid Media System shows how the interactions among older and newer media technologies, genres, norms, behaviors, and organizational forms now shape power relations among political actors, media, and publics.

This book of the bestselling and widely acclaimed Python Machine Learning series is a comprehensive guide to machine and deep learning using PyTorch s simple to code framework. Purchase of the print or Kindle book includes a free eBook in PDF format. Key Features Learn applied machine learning with a solid foundation in theory Clear, intuitive explanations take you deep into the theory and practice of Python machine learning Fully updated and expanded to cover PyTorch, transformers, XGBoost, graph neural networks, and best practices Book DescriptionMachine Learning with PyTorch and Scikit-Learn is a comprehensive guide to machine learning and deep learning with PyTorch. It acts as both a step-by-step tutorial and a reference you'll keep coming back to as you build your machine learning systems. Packed with clear explanations, visualizations, and examples, the book covers all the essential machine learning techniques in depth. While some books teach you only to follow instructions, with this machine learning book, we teach the principles allowing you to build models and applications for yourself. Why PyTorch? PyTorch is the Pythonic way to learn machine learning, making it easier to learn and simpler to code with. This book explains the essential parts of PyTorch and how to create models using popular libraries, such as PyTorch Lightning and PyTorch Geometric. You will also learn about generative adversarial networks (GANs) for generating new data and training intelligent agents with reinforcement learning. Finally, this new edition is expanded to cover the latest trends in deep learning, including graph neural networks and large-scale transformers used for natural language processing (NLP). This PyTorch book is your companion to machine learning with Python, whether you're a Python developer new to machine learning or want to deepen your knowledge of the latest developments.What you will learn Explore frameworks, models, and techniques for machines to learn from data Use scikit-learn for machine learning and PyTorch for deep learning Train machine learning classifiers on images, text, and more Build and train neural networks, transformers, and boosting algorithms Discover best practices for evaluating and tuning models Predict continuous target outcomes using regression analysis Dig deeper into textual and social media data using sentiment analysis Who this book is for If you have a good grasp of Python basics and want to start learning about machine learning and deep learning, then this is the book for you. This is an essential resource written for developers and data scientists who want to create practical machine learning and deep learning applications using scikit-learn and PyTorch. Before you get started with this book, you’ll need a good understanding of calculus, as well as linear algebra.

Governments, businesses, and individuals around the world are thinking about what happens after the COVID-19 pandemic. Can we hope to not only ward off another COVID-like disaster but also eliminate all respiratory diseases, including the flu? Bill Gates, one of our greatest and most effective thinkers and activists, believes the answer is yes. The author of the #1 New York Times best seller How to Avoid a Climate Disaster lays out clearly and convincingly what the world should have learned from COVID-19 and what all of us can do to ward off another catastrophe like it. Relying on the shared knowledge of the world’s foremost experts and on his own experience of combating fatal diseases through the Gates Foundation, Gates first helps us understand the science of infectious diseases. Then he shows us how the nations of the world, working in conjunction with one another and with the private sector, how we can prevent a new pandemic from killing millions of people and devastating the global economy. Here is a clarion call—strong, comprehensive, and of the gravest importance.

Get the business leader's guide to using Twitter to gain competitive advantage. Since 2006, forward-thinking companies like Apple, JetBlue, Whole Foods, and GM have discovered the instant benefits of leveraging the social media phenomenon known as Twitter to reach consumers directly, build their brand, and increase sales. Twitter is at the leading edge of the social media movement, allowing members to connect with one another in real time via short text messages?called "tweets"?that can be received either via the Twitter site or by e-mail, instant messenger, or cell phone. Many companies have started building entire teams within their organization dedicated solely to responding to tweets from consumers about their brand. And this is just the beginning. In Twitter Power, Internet marketing and Web innovation expert Joel Comm shows businesses and marketers how to integrate Twitter into their existing marketing strategies to build a loyal following among Twitter members, expand awareness for their product or service, and even handle negative publicity due to angry or disappointed consumers. The book also presents case studies of companies on the forefront of the Twitter movement, to help you develop your own social networking strategies. Twitter Power is the result of extensive testing and participation in the social networking community and is a must-have for any business that wants to keep up with the social media movement. Twitter Power features a foreword by Tony Robbins.

Silver Medal Winner, Social Networking, 2012 Axiom Business Book Awards Silver Medal Winner, Business and Leadership, 2012 Nautilus Book Awards The official word from Twitter on how to harness the power of the platform for any cause. As recent events in Japan, the Middle East, and Haiti have shown, Twitter offers a unique platform to connect individuals and influence change in ways that were unthinkable only a short time ago. In Twitter for Good, Claire Diaz Ortiz, Twitter’s head of corporate social innovation and philanthropy, shares the same strategies she offers to organizations launching cause-based campaigns. Filled with dynamic examples from initiatives around the world, this groundbreaking book offers practical guidelines for harnessing individual activism via Twitter as a force for social change. Reveals why every organization needs a dedicated Twitter strategy and explains how to set one Introduces the five-step model taught at trainings around the world: T.W.E.E.T. (Target, Write, Engage, Explore, Track) Author @claired is the head of corporate social innovation and philanthropy at Twitter, collaborating with organizations like Nike, Pepsi, MTV, the American Red Cross, charity:water, Room to Read, the Gates Foundation, the Skoll Foundation, the Case Foundation, National Wildlife Federation, Kiva, the United Nations, Free the Children, Committee to Protect Journalists, Partners in Health, FEMA, Ushahidi, The Acumen Fund With more than 200 million users worldwide, Twitter has established itself as a dynamic force, one that every business and nonprofit must understand how to use effectively.