Data-Intensive Science

CHAPTER 14

Interactive Data Exploration

Brian Summa, Attilay Gyulassy, Peer-Timo Bremer, and Valerio Pascucci

CONTENTS

14.1  Introduction

14.2  Hierarchical Indexing for Out-of-Core Data Access

14.2.1  Hierarchical Subsampling Framework

14.2.2  Binary Trees and the Lebesgue Space-Filling Curve

14.2.2.1  Indexing the Lebesgue Space-Filling Curve

14.2.2.2  Index Remapping

14.2.3  Performance

14.2.3.1  Data I/O Requirements

14.2.3.2  Tests with Memory Mapped Files

14.2.3.3  Parallel Write

14.2.3.4  On-Demand, Stream Processing

14.3  Feature-Based Exploration and Analysis of Large Scale Data

14.3.1  Morse Theory for Robust, Multi-Scale Feature Analysis

14.3.1.1  Smooth Maps on Manifolds

14.3.1.2  Morse-Smale Complex

14.3.1.3  Simplification