Table of contents : Cover Front Matter 1. Relationship Between Ratio Analysis, DEA-R and DEA Models 2. Determining the Production Possibility Set for Ratio Data: A Novel Hybrid DEA-R Approach 3. Incorporating Preference Information in DEA-R and DEA for Efficiency Analysis 4. Finding Suitable Target in DEA and DEA-R 5. Cost and Revenue Efficiency Based on MOLP in DEA-R Models 6. A Slack-Based Model for Efficiency Evaluation in DEA and DEA-R 7. A Centralized Resource Allocation Approach for Two-Stage Data Envelopment Analysis 8. The Two-Stage Network Based on Ratio Analysis Models 9. Calculating Environmental, Social and Economic Efficiencies of a Two-Stage Supply Chain in DEA-R Using Genetic Algorithm