Examining the years 1917-22, this biography traces the parallel careers and political lives of Michael Collins and Eamon de Valera, two leaders of the Irish revolution who were very different in temperament and style. It also considers the legacy of Collins on de Valera's later political life.

Michael Collins and Eamon de Valera were the two most charismatic leaders of the Irish revolution. This joint biography looks first at their very different upbringings and early careers. Both fought in the 1916 Easter Rising , although it is almost certain they did not meet during that tumultuous week. Their first encounter came when Collins had been released from jail after the rising but de Valera was still inside. Collins was one of those who wanted to run a Sinn Féin candidate in the Longford by-election of 1917. De Valera and other leaders opposed this initiative but the Collins group went ahead anyway and the candidate won narrowly. The incident typified the relationship between the two men: they were vastly different in temperament and style. But it was precisely in their differences and contradictions that their fascination lay. De Valera, the political pragmatist, hoped to secure independence through political agitation, whereas the ambitious Collins, with his restless temperament and boundless energy, was an impassioned patriot who believed in terror and assassination. T. Ryle Dwyer examines the years, 1917-22 through the twists and turns of their careers. In an epilogue, he considers the legacy of Collins on de Valera's political life.

A major literary biography of America's best-loved nineteenth-century poet, the first in more than fifty years, and a much-needed reassessment for the twenty-first century of a writer whose stature and celebrity were unparalleled in his time, whose work helped to explain America's new world not only to Americans but to Europe and beyond. From the author of On Paper ("Buoyant"--The New Yorker; "Essential"--Publishers Weekly), Patience and Fortitude ("A wonderful hymn"--Simon Winchester), and A Gentle Madness ("A jewel"--David McCullough). In Cross of Snow, the result of more than twelve years of research, including access to never-before-examined letters, diaries, journals, notes, Nicholas Basbanes reveals the life, the times, the work--the soul--of the man who shaped the literature of a new nation with his countless poems, sonnets, stories, essays, translations, and whose renown was so wide-reaching that his deep friendships included Charles Dickens, Nathaniel Hawthorne, Ralph Waldo Emerson, Julia Ward Howe, and Oscar Wilde. Basbanes writes of the shaping of Longfellow's character, his huge body of work that included translations of numerous foreign works, among them, the first rendering into a complete edition by an American of Dante's Divine Comedy. We see Longfellow's two marriages, both happy and contented, each cut short by tragedy. His first to Mary Storer Potter that ended in the aftermath of a miscarriage, leaving Longfellow devastated. His second marriage to the brilliant Boston socialite--Fanny Appleton, after a three-year pursuit by Longfellow (his "fiery crucible," he called it), and his emergence as a literary force and a man of letters. A portrait of a bold artist, experimenter of poetic form and an innovative translator--the human being that he was, the times in which he lived, the people whose lives he touched, his monumental work and its place in his America and ours.

Éamon de Valera is the most remarkable man in the history of modern Ireland. Much as Churchill personified British resistance to Hitler and de Gaulle personified the freedom of France, de Valera personified Irish independence. From his emergence in the aftermath of the 1916 rebellion as the republican leader, he bestrode Irish politics like a colossus for over fifty years. On the eve of the centenary of the Irish revolution, one of Ireland's most eminent historians explains why Eamon de Valera was such a divisive figure that he has never until now received the recognition he deserves. This biography reconciles an acknowledgement of de Valera's catastrophic failure in 1921-22, when his petulant rejection of the Anglo-Irish Treaty shaped the dimensions of a bloody civil war, with an appreciation of his subsequent greatness as the statesman who single-handedly severed the ties with Britain and defined nationalist Ireland's sense of itself.

An introduction to a broad range of topics in deep learning, covering mathematical and conceptual background, deep learning techniques used in industry, and research perspectives. “Written by three experts in the field, Deep Learning is the only comprehensive book on the subject.” —Elon Musk, cochair of OpenAI; cofounder and CEO of Tesla and SpaceX Deep learning is a form of machine learning that enables computers to learn from experience and understand the world in terms of a hierarchy of concepts. Because the computer gathers knowledge from experience, there is no need for a human computer operator to formally specify all the knowledge that the computer needs. The hierarchy of concepts allows the computer to learn complicated concepts by building them out of simpler ones; a graph of these hierarchies would be many layers deep. This book introduces a broad range of topics in deep learning. The text offers mathematical and conceptual background, covering relevant concepts in linear algebra, probability theory and information theory, numerical computation, and machine learning. It describes deep learning techniques used by practitioners in industry, including deep feedforward networks, regularization, optimization algorithms, convolutional networks, sequence modeling, and practical methodology; and it surveys such applications as natural language processing, speech recognition, computer vision, online recommendation systems, bioinformatics, and videogames. Finally, the book offers research perspectives, covering such theoretical topics as linear factor models, autoencoders, representation learning, structured probabilistic models, Monte Carlo methods, the partition function, approximate inference, and deep generative models. Deep Learning can be used by undergraduate or graduate students planning careers in either industry or research, and by software engineers who want to begin using deep learning in their products or platforms. A website offers supplementary material for both readers and instructors.

A boy climbs to the top of a giant beanstalk, where he uses his quick wits to outsmart an ogre and make his and his mother's fortune.