The goal of this guide and manual is to provide a practical and brief overview of the theory on computerized adaptive testing (CAT) and multistage testing (MST) and to illustrate the methodologies and applications using R open source language and several data examples. Implementation relies on the R packages catR and mstR that have been already or are being developed by the first author (with the team) and that include some of the newest research algorithms on the topic. The book covers many topics along with the R-code: the basics of R, theoretical overview of CAT and MST, CAT designs, CAT assembly methodologies, CAT simulations, catR package, CAT applications, MST designs, IRT-based MST methodologies, tree-based MST methodologies, mstR package, and MST applications. CAT has been used in many large-scale assessments over recent decades, and MST has become very popular in recent years. R open source language also has become one of the most useful tools for applications in almost all fields, including business and education. Though very useful and popular, R is a difficult language to learn, with a steep learning curve. Given the obvious need for but with the complex implementation of CAT and MST, it is very difficult for users to simulate or implement CAT and MST. Until this manual, there has been no book for users to design and use CAT and MST easily and without expense; i.e., by using the free R software. All examples and illustrations are generated using predefined scripts in R language, available for free download from the book's website.

The "Scriptores Historiae Augustae, " or "Historia Augusta, " is a collection of biographies of Roman emperors, heirs, and claimants from Hadrian to Numerianus (117- 284 CE). The work, which is modeled on Suetonius, purports to be written by six different authors and quotes documents and public records extensively. Since we possess no continuous account of the emperors of the second and third centuries, the "Historia Augusta" has naturally attracted keen attention. In the last century it has also generated the gravest suspicions. Present opinion holds that the whole is the work of a single author (who lived in the time of Theodosius) and contains much that is plagiarism and even downright forgery.

The Loeb Classical Library edition of the "Historia Augusta" is in three volumes.

The Historia Augusta is a biographical work roughly following the model of the imperial biographer Suetonius (LCL 31, 38) and covering the lives of the Roman emperors from Hadrian (r. 117-138) to Carinus (r. 283-285), with a lacuna between the lives of the Gordians and the Valerians. Although the work comes down to us as a collection of thirty books written by six different authors, it is now generally considered to be the creation of a single individual writing under several pseudonyms no earlier than the late fourth century. It is a thoroughly enigmatic work whose origins, nature, and purpose remain obscure; the very beginning of the life of Hadrian is lost, and with it any general introduction that may have existed. While the Historia Augusta is our most detailed surviving source for the second and third centuries, often providing details beyond the Greek accounts, it is not a trustworthy source for historical information: too many of the details are anachronistic, unsupported, or preposterous, or contradicted internally or by better sources, and many documents, speeches, acclamations, and inscriptions that it quotes or cites are entirely fictional. The Historia Augusta nevertheless has its attractions: for the connoisseur of biography the author provides plenty of wordplay, puns, allusions, literary games, and mock-scholarly digressions, and for the casual reader he offers vivid characterizations of emperors both good and bad. This revision of the original Loeb edition by David Magie offers text, translation, and annotation that are fully current with modern scholarship.

The Historia Augusta is a biographical work roughly following the model of the imperial biographer Suetonius (LCL 31, 38) and covering the lives of the Roman emperors from Hadrian (r. 117-138) to Carinus (r. 283-285), with a lacuna between the lives of the Gordians and the Valerians. Although the work comes down to us as a collection of thirty books written by six different authors, it is now generally considered to be the creation of a single individual writing under several pseudonyms no earlier than the late fourth century. It is a thoroughly enigmatic work whose origins, nature, and purpose remain obscure; the very beginning of the life of Hadrian is lost, and with it any general introduction that may have existed. While the Historia Augusta is our most detailed surviving source for the second and third centuries, often providing details beyond the Greek accounts, it is not a trustworthy source for historical information: too many of the details are anachronistic, unsupported, or preposterous, or contradicted internally or by better sources, and many documents, speeches, acclamations, and inscriptions that it quotes or cites are entirely fictional. The Historia Augusta nevertheless has its attractions: for the connoisseur of biography the author provides plenty of wordplay, puns, allusions, literary games, and mock-scholarly digressions, and for the casual reader he offers vivid characterizations of emperors both good and bad. This revision of the original Loeb edition by David Magie offers text, translation, and annotation that are fully current with modern scholarship.

The Historia Augusta is a biographical work roughly following the model of the imperial biographer Suetonius (LCL 31, 38) and covering the lives of the Roman emperors from Hadrian (r. 117-138) to Carinus (r. 283-285), with a lacuna between the lives of the Gordians and the Valerians. Although the work comes down to us as a collection of thirty books written by six different authors, it is now generally considered to be the creation of a single individual writing under several pseudonyms no earlier than the late fourth century. It is a thoroughly enigmatic work whose origins, nature, and purpose remain obscure; the very beginning of the life of Hadrian is lost, and with it any general introduction that may have existed. While the Historia Augusta is our most detailed surviving source for the second and third centuries, often providing details beyond the Greek accounts, it is not a trustworthy source for historical information: too many of the details are anachronistic, unsupported, or preposterous, or contradicted internally or by better sources, and many documents, speeches, acclamations, and inscriptions that it quotes or cites are entirely fictional. The Historia Augusta nevertheless has its attractions: for the connoisseur of biography the author provides plenty of wordplay, puns, allusions, literary games, and mock-scholarly digressions, and for the casual reader he offers vivid characterizations of emperors both good and bad. This revision of the original Loeb edition by David Magie offers text, translation, and annotation that are fully current with modern scholarship.

The goal of this guide and manual is to provide a practical and brief overview of the theory on computerized adaptive testing (CAT) and multistage testing (MST) and to illustrate the methodologies and applications using R open source language and several data examples. Implementation relies on the R packages catR and mstR that have been already or are being developed by the first author (with the team) and that include some of the newest research algorithms on the topic. The book covers many topics along with the R-code: the basics of R, theoretical overview of CAT and MST, CAT designs, CAT assembly methodologies, CAT simulations, catR package, CAT applications, MST designs, IRT-based MST methodologies, tree-based MST methodologies, mstR package, and MST applications. CAT has been used in many large-scale assessments over recent decades, and MST has become very popular in recent years. R open source language also has become one of the most useful tools for applications in almost all fields, including business and education. Though very useful and popular, R is a difficult language to learn, with a steep learning curve. Given the obvious need for but with the complex implementation of CAT and MST, it is very difficult for users to simulate or implement CAT and MST. Until this manual, there has been no book for users to design and use CAT and MST easily and without expense; i.e., by using the free R software. All examples and illustrations are generated using predefined scripts in R language, available for free download from the book's website.

The "Scriptores Historiae Augustae, " or "Historia Augusta, " is a collection of biographies of Roman emperors, heirs, and claimants from Hadrian to Numerianus (117- 284 CE). The work, which is modeled on Suetonius, purports to be written by six different authors and quotes documents and public records extensively. Since we possess no continuous account of the emperors of the second and third centuries, the "Historia Augusta" has naturally attracted keen attention. In the last century it has also generated the gravest suspicions. Present opinion holds that the whole is the work of a single author (who lived in the time of Theodosius) and contains much that is plagiarism and even downright forgery.

The Loeb Classical Library edition of the "Historia Augusta" is in three volumes.

What is known of the expansion of the Roman Empire in Asia and adjacent lands to the East between 133 B.C. and A.D. 285 is presented here in a comprehensive organization of all the existing scholarship. An authority in the field of ancient history and archaeology, Mr. Magie presents a thorough account of political and economic conditions in this period. Volume 1 contains the text. Originally published in 1950. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

What is known of the expansion of the Roman Empire in Asia and adjacent lands to the East between 133 B.C. and A.D. 285 is presented here in a comprehensive organization of all the existing scholarship. An authority in the field of ancient history and archaeology, Mr. Magie presents a thorough account of political and economic conditions in this period. Volume 2 contains the notes. Originally published in 1950. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

What is known of the expansion of the Roman Empire in Asia and adjacent lands to the East between 133 B.C. and A.D. 285 is presented here in a comprehensive organization of all the existing scholarship. An authority in the field of ancient history and archaeology, Mr. Magie presents a thorough account of political and economic conditions in this period. Volume 2 contains the notes. Originally published in 1950. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

What is known of the expansion of the Roman Empire in Asia and adjacent lands to the East between 133 B.C. and A.D. 285 is presented here in a comprehensive organization of all the existing scholarship. An authority in the field of ancient history and archaeology, Mr. Magie presents a thorough account of political and economic conditions in this period. Volume 1 contains the text. Originally published in 1950. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.