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Parameters involved in estimation using COCOMO possess vagueness which introduces some degree of uncertainty in algorithmic modelling. The concept of fuzzy logic can deal with uncertainty involved in Intermediate COCOMO cost driver measurements via Fuzzy Inference System (FIS). In the proposed research, an effort has been made wherein, for each cost driver, an FIS is designed to calculate the corresponding effort multiplier. Proposed research provides an insight through evolutionary-based optimization techniques to optimize fuzzy logic-based COCOMO using Particle Swarm Optimization Algorithm. The magnitude of relative error and its mean, calculated using COCOMO NASA2 and COCOMONASA datasets are used as evaluation metrics to validate the proposed model. The model outperforms when compared to other optimization techniques like Genetic Algorithm. <\/jats:p>","DOI":"10.1142\/s1469026820500054","type":"journal-article","created":{"date-parts":[[2020,5,21]],"date-time":"2020-05-21T13:09:29Z","timestamp":1590066569000},"source":"Crossref","is-referenced-by-count":33,"title":["Optimizing Design of Fuzzy Model for Software Cost Estimation Using Particle Swarm Optimization Algorithm"],"prefix":"10.1142","volume":"19","author":[{"given":"Sonia","family":"Chhabra","sequence":"first","affiliation":[{"name":"Computer Science and Engineering Department, Uttrakhand Technical University, Dehradun, Uttrakhand, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Harvir","family":"Singh","sequence":"additional","affiliation":[{"name":"Computer Science and Engineering Department, Jaipur National University, Jaipur, Rajasthan, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"219","published-online":{"date-parts":[[2020,5,4]]},"reference":[{"key":"S1469026820500054BIB001","doi-asserted-by":"publisher","DOI":"10.1145\/175247.175255"},{"key":"S1469026820500054BIB002","first-page":"151","volume-title":"Computational Intelligence in Software Engineering","author":"Saliu M.","year":"2004"},{"key":"S1469026820500054BIB003","doi-asserted-by":"publisher","DOI":"10.1016\/S0019-9958(65)90241-X"},{"key":"S1469026820500054BIB004","doi-asserted-by":"publisher","DOI":"10.1109\/INDCON.2005.1590196"},{"key":"S1469026820500054BIB005","first-page":"331","volume-title":"Proc. of IEEE Int. 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