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Often conflicting objectives of these projects have complicated their assessment and selection process. This paper offers a novel approach of high technology-project portfolio selection in two main parts. In the first part, a new risk reduction compromise decision-making model is proposed that applies a new approach in determining the weights of experts and in avoiding information loss. The objective function of a new interval type-2 fuzzy sets (IT2Fs) based mathematical model of project portfolio selection is formed by the outcome. To depict model\u2019s applicability, data from case study of high technology-project selection in the literature is used to present the efficacy of the model.<\/jats:p>","DOI":"10.3233\/jifs-152510","type":"journal-article","created":{"date-parts":[[2017,5,26]],"date-time":"2017-05-26T14:41:35Z","timestamp":1495809695000},"page":"4069-4079","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":21,"title":["A mathematical modeling approach for\u00a0high\u00a0and new technology-project portfolio selection under uncertain environments"],"prefix":"10.1177","volume":"32","author":[{"given":"Vahid","family":"Mohagheghi","sequence":"first","affiliation":[{"name":"Department of Industrial Engineering, Faculty of Engineering, Shahed University, Tehran, Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S. 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