Entity Information Life Cycle for Big Data

Chapter 9

Blocking

Abstract

The chapter discusses blocking as a technique for reducing the total number of pair-wise comparisons necessary for an ER algorithm to arrive at an acceptable clustering result. Blocking or some other type of comparison reduction must be used in order to implement a practical ER system. This chapter focuses on a particular type of blocking called match key blocking. It also discusses the importance of match-key-to-rule alignment, match key precision, match key recall, and strategies for creating and optimizing match key generators.

Keywords

Blocking; Match Key; Inverted Indexing

Blocking

As necessary as the considerations discussed in Chapter 8 are to the design of a logically sound ER system, they are not sufficient to implement ...