Introduction

Junwei Lu
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Junwei Lu: Harvard University

Chapter Chapter 1 in Big Data Analysis, 2025, pp 3-5 from Springer

Abstract: Abstract This book aims to solve two major questions: 1. How to analyze big data? (Method) 2. Why it works? (Theory) To clarify the questions above, we need to define what is “big data.” In this book, big data is almost a synonym of “high-dimensional data.” The dataset, usually denoted as 𝕏 $$\mathbb {X}$$ , is an n × d $$n \times d$$ matrix, where n is the sample size and d is the number of features (or feature dimension).

Date: 2025
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DOI: 10.1007/978-3-032-03161-7_1

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