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An Ontology-Based Learning Approach for Automatically Classifying Security Requirements
Journal of Systems and Software ( IF 2.559 ) Pub Date : 2020-02-29 , DOI: 10.1016/j.jss.2020.110566
Tong Li; Zhishuai Chen

Although academia has recognized the importance of explicitly specifying security requirements in early stages of system developments for years, in reality, many projects mix security requirements with other types of requirements. Thus, there is a strong need for precisely and efficiently classifying such security requirements from other requirements in requirement specifications. Existing studies leverage lexical evidence to build probabilistic classifiers, which are domain-dependent by design and cannot effectively classify security requirements from different application domains. In this paper, we propose an ontology-driven learning approach to automatically classify security requirements. Our approach consists of a conceptual layer and a linguistic layer, which understands security requirements based on not only lexical evidence but also conceptual domain knowledge. In particular, we apply a systematic approach to identify linguistic features of security requirements based on an extended security requirements ontology and linguistic knowledge, connecting the conceptual layer with the linguistic layer. Such linguistic features are then used to train domain-independent security requirements classifiers by using machine learning techniques. We have carried out a series of experiments to evaluate the performance and generalization ability of our proposal against existing approaches. The results of the experiments show that the proposed approach outperforms existing approaches with a significant increase of F1 score (0.63 VS. 0.44) when the training dataset and the testing dataset come from different application domains, i.e., the classifiers trained by our approach can be generalized to classify security requirements from different domains.
更新日期:2020-03-07

 

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