09 فروردین 1403
زهرا يوسفي

زهرا یوسفی

مرتبه علمی: استادیار
نشانی: دانشکده ادبیات و علوم انسانی - گروه علم اطلاعات و دانش شناسی
تحصیلات: دکترای تخصصی / علم اطلاعات و دانش شناسی
تلفن: 07731222106
دانشکده: دانشکده ادبیات و علوم انسانی

مشخصات پژوهش

عنوان Investigating text power in predicting semantic similarity
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
distributional semantics; semantic similarity; textual similarity; effectiveness; information retrieval; MeSH
مجله International Journal of Information Science and Management
شناسه DOI
پژوهشگران زهرا یوسفی (نفر اول) ، هاجر ستوده (نفر دوم) ، مهدیه میرزابیگی (نفر سوم) ، سید مصطفی فخراحمد (نفر چهارم) ، علیرضا نیک سرشت (نفر پنجم) ، مهدی محمدی (نفر ششم به بعد)

چکیده

This article presents an empirical evaluation to investigate the distributional semantic power of abstract, body and full-text, as different text levels, in predicting the semantic similarity using a collection of open access articles from PubMed. The semantic similarity is measured based on two criteria namely, linear MeSH terms intersection and hierarchical MeSH terms distance. As such, a random sample of 200 queries and 20000 documents are selected from a test collection built on CITREC open source code. Sim Pack Java Library is used to calculate the textual and semantic similarities. The nDCG value corresponding to two of the semantic similarity criteria is calculated at three precision points. Finally, the nDCG values are compared by using the Friedman test to determine the power of each text level in predicting the semantic similarity. The results showed the effectiveness of the text in representing the semantic similarity in such a way that texts with maximum textual similarity are also shown to be 77% and 67% semantically similar in terms of linear and hierarchical criteria, respectively. Furthermore, the text length is found to be more effective in representing the hierarchical semantic compared to the linear one. Based on the findings, it is concluded that when the subjects are homogenous in the tree of knowledge, abstracts provide effective semantic capabilities, while in heterogeneous milieus, full-texts processing or knowledge bases is needed to acquire IR effectiveness.