Testing and experimenting with real corpus versus simulated collection have wide variances. Simu-lated collection can able to yield results quickly, lead to change the population characteristics, vali-dation, performance prediction and so on. This exercise can also lead to scale up corpora and would result in the predictive accuracy and efficiency of the data.This interesting book has twelve well-knitted chapters. In the first chapter on Introduction, the au-thors have presented comprehensively the basic concepts and description about simulated text bed,characteristics, methods used, scope of simulation and its importance. This chapter besides also serve as summary of the book content.In the second chapter on Evaluation Approaches, the authors distinguished the task based and non-task based evaluation. The measures for evaluation are treated briefly in this chapter.
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