@article{, author = {Kim, Yeongsu; Lee, Seungwoo; Dollmann, Markus; Geierhos, Michaela}, title = {Improving Classifiers for Semantic Annotation of Software Requirements with Elaborate Syntactic Structure}, editor = {}, booktitle = {}, series = {}, journal = {International Journal of Advanced Science and Technology}, address = {}, publisher = {SERSC Australia}, edition = {}, year = {2018}, isbn = {}, volume = {112}, number = {}, pages = {123-136}, url = {}, doi = {10.14257/ijast.2018.112.12}, keywords = {Software Engineering ; Natural Language Processing ; Semantic Annotation ; Machine Learning ; Feature Engineering ; Syntactic Structure}, abstract = {A user generally writes software requirements in ambiguous and incomplete form by using natural language; therefore, a software developer may have difficulty in clearly understanding what the meanings are. To solve this problem with automation, we propose a classifier for semantic annotation with manually pre-defined semantic categories. To improve our classifier, we carefully designed syntactic features extracted by constituency and dependency parsers. Even with a small dataset and a large number of classes, our proposed classifier records an accuracy of 0.75, which outperforms the previous model, REaCT.}, note = {}, }