1. Introduction

2. Data sources
2.1. Sloan Digital Sky Survey
2.2. SDSS S82
2.3. Self-organizing map of the SDSS DR7 spectra
2.4. SOM user interface

3. Selecting E+A galaxies
3.1. Input catalogue
3.2. Selection of new candidates
3.3. Final selection
3.4. Selection effects

4. Properties of the E+A sample
4.1. The final catalogue
4.2. Morphological types
4.3. Colour-mass diagram
4.4. Merger fraction
4.5. Hidden AGNs

5. Summary and conclusions