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In this paper, a Hybrid Particle Swarm Optimization-Firefly (HPSOFF) algorithm is proposed which integrates Particle Swarm Optimization (PSO), Firefly (FF) and Modified Corner List (MCL) algorithms. Initially, PSO algorithm utilizes MCL algorithm for non-slicing floorplan representations and fitness value evaluation. The solutions obtained from PSO are provided as initial solutions to FF algorithm. Fitness function evaluation and floorplan representations for FF algorithm are again carried out using MCL algorithm. The proposed algorithm is illustrated using Microelectronics Centre of North Carolina (MCNC) and Gigascale Systems Research Centre (GSRC) benchmark circuits. The results obtained are compared with the solutions derived from other stochastic algorithms and the proposed algorithm provides better solutions for both the benchmark circuits.<\/jats:p>","DOI":"10.3233\/jifs-152551","type":"journal-article","created":{"date-parts":[[2016,12,2]],"date-time":"2016-12-02T10:26:29Z","timestamp":1480674389000},"page":"661-669","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":13,"title":["Hybrid Particle Swarm Optimization-Firefly algorithm (HPSOFF) for combinatorial optimization of non-slicing VLSI floorplanning"],"prefix":"10.1177","volume":"32","author":[{"given":"P.","family":"Sivaranjani","sequence":"first","affiliation":[{"name":"Department of Electronics and Communication Engineering, Kongu Engineering College, Tamilnadu, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Senthil Kumar","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronics Engineering, Dr. Mahalingam College of Engineering and Technology, Tamilnadu, India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2016,12]]},"reference":[{"key":"e_1_3_1_2_2","first-page":"1","article-title":"Sequence pair based voltage island floorplanning","author":"Sengupta D.","year":"2011","unstructured":"SenguptaD., VenerisA., WiltonS., IvanovA. and SalehR., Sequence pair based voltage island floorplanning. 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