Purpose - Going concern is one of fundamental concepts in accounting and auditing and sometimes the assessment of a company’s going concern status that is a tough process. Various going concern prediction models’ based on statistical and data mining methods help auditors and stakeholders suggested in the previous literature. Research design - This paper employs a data mining approach to prediction of going concern status of Iranian firms listed in Tehran Stock Exchange using Particle Swarm Optimization. To reach this goal, at the first step, we used the stepwise discriminant analysis it is selected the final variables from among of 42 variables and in the second stage; we applied a grid-search technique using 10-fold cross-validation to find out the optimal model. Results - The empirical tests show that the particle swarm optimization (PSO) model reached 99.92% and 99.28% accuracy rates for training and holdout data. Conclusions – The authors conclude that PSO model is applicable for prediction going concern of Iranian listed companies.

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