A comprehensive guide to automated statistical data cleaning The production of clean data is a complex and time-consuming process that requires both technical know-how and statistical expertise. Statistical Data Cleaning brings together a wide range of techniques for cleaning textual, numeric or categorical data. This book examines technical data cleaning methods relating to data representation and data structure. A prominent role is given to statistical data validation, data cleaning based on predefined restrictions, and data cleaning strategy. Key features: Focuses on the automation of data cleaning methods, including both theory and applications written in R. Enables the reader to design data cleaning processes for either one-off analytical purposes or for setting up production systems that clean data on a regular basis. Explores statistical techniques for solving issues such as incompleteness, contradictions and outliers, integration of data cleaning components and quality monitoring. Supported by an accompanying website featuring data and R code. This book enables data scientists and statistical analysts working with data to deepen their understanding of data cleaning as well as to upgrade their practical data cleaning skills. It can also be used as material for a course in data cleaning and analyses.

The current book "IBPS RRB Guide for Officer Scale I (Preliminary & Main), II & III Exam with 4 Online Tests" covers all the 5 sections asked in the RRB exam English Language, Quantitative Aptitude, Data Interpretation, Reasoning, Computer Knowledge and Financial Awareness. The book provides the Solved Papers of 2017 & 2018 for Scale I, II & III. The book covers Revision Material on Financial Awareness. The book provides 4 Online Practice Sets - 2 for Preliminary & 2 for the Main Exam on the latest pattern of the exam for the Mock Online experience. These tests will be useful for Scale I, Scale II (GBO) & Scale III. The book provides well illustrated theory with exhaustive fully solved examples for learning. This is followed with an exhaustive collection of solved questions in the form of Exercise. The section on General Awareness has been divided into 5 chapters Conceptual Banking; Current Banking; General Awareness and Current Affairs; Financial Awareness.

The current book "IBPS-CWE RRB Guide for Officer Scale I, II & III Exam with 3 Online Tests" covers all the 5 sections asked in the RRB exam English Language, Quantitative Aptitude, Data Interpretation, Reasoning, Computer Knowledge and Financial Awareness. The book provides the Solved Papers of 2017 for Scale I, II & III. The book covers Revision Material on Financial Awareness. The book provides well illustrated theory with exhaustive fully solved examples for learning. This is followed with an exhaustive collection of solved questions in the form of Exercise. The section on General Awareness has been divided into 5 chapters Conceptual Banking; Current Banking; General Awareness and Current Affairs; Financial Awareness. The book is a one stop solution to all the requirements of the students aspiring for Officer Scale II and III. The book provides 3 Online Practice Sets on the latest pattern of the exam for the Mock Online experience. These tests will be useful for Scale I, Scale II (GBO) & Scale III.

In the 20th century, many mathematicians in Russia made great contributions to the field of mathematics. This invaluable book, which presents the main achievements of Russian mathematicians in that century, is the first most comprehensive book on Russian mathematicians. It has been produced as a gesture of respect and appreciation for those mathematicians and it will serve as a good reference and an inspiration for future mathematicians. It presents differences in mathematical styles and focuses on Soviet mathematicians who often discussed “what to do” rather than “how to do it”. Thus, the book will be valued beyond historical documentation.The editor, Professor Yakov Sinai, a distinguished Russian mathematician, has taken pains to select leading Russian mathematicians — such as Lyapunov, Luzin, Egorov, Kolmogorov, Pontryagin, Vinogradov, Sobolev, Petrovski and Krein — and their most important works. One can, for example, find works of Lyapunov, which parallel those of Poincaré; and works of Luzin, whose analysis plays a very important role in the history of Russian mathematics; Kolmogorov has established the foundations of probability based on analysis. The editor has tried to provide some parity and, at the same time, included papers that are of interest even today.The original works of the great mathematicians will prove to be enjoyable to readers and useful to the many researchers who are preserving the interest in how mathematics was done in the former Soviet Union.