IPO-Based Evaluation of Sustainable Postdisaster Recovery from Stakeholder Perspectives of the Lushan Earthquake

Assessing disaster resilience is one of the important research issues for disaster risk management. The process of postdisaster recovery (PDR) involves multiple stakeholders, and their expectations and engagement are considered a key factor for the success of PDR projects. This paper is oriented toward sustainable development, combined with the demands of many stakeholders, and proposes a comprehensive recovery evaluation that considers the sustainability of community resilience. Based on internet public opinion (IPO), a novel method integrating a modified analytic hierarchy process (AHP) and hesitant fuzzy linguistics (HFL) is introduced to guarantee multiple stakeholders' engagement. Specifically, literature research and field interviews are combined with IPO data using text mining techniques to establish evaluation indices. The evaluation results indicate that the overall recovery level of the Lushan earthquake is between fairly and slightly good. It reveals that balances between social (e.g., infrastructure reconstruction, public services and economic recovery, etc.) and individual aspects (e.g., housing allowance, life recovery, mental health, etc.) are needed for recovery improvements. Moreover, housing is regarded as the most urgent and critical task in PDR. Accordingly, increasing requirements for the protection of intangible heritages are anticipated. Finally, possible policies on recovery and poverty alleviation are recommended.