Chapter 1. A New Hybrid Binary Algorithm of Bat Algorithm and Differential Evolution for Feature Selection and Classification.- Chapter 2. Multi-objective Optimization of Engineering Design Problems through Pareto-Based Bat Algorithm.- Chapter 3. A Study on the Bat Algorithm Technique To Evaluate The Skin Melanoma Images.- Chapter 4. Multi-Thresholding with Kapur's Entropy - A Study Using Bat Algorithm with Different Search Operators.- Chapter 5...