1- Associate Professor, Department of Arabic Language and Literature, Kharazmi University, Tehran, Iran , eshkevari@khu.ac.ir
2- Professor, Department of Arabic Language and Literature, Tarbiat Modares University, Tehran, Iran
3- Associate Professor, Department of Arabic Language and Literature, Kharazmi University, Tehran, Iran
4- PhD student, Arabic Language and Literature, Kharazmi University, Tehran, Iran
Abstract: (794 Views)
The relationship between words and their concepts is investigated in the "Semantics". "Statistical Semantics" is a sub-branch of "Computational Semantics" and in fact, a sub-branch of NLP. Determining the keywords and main concepts of a text requires time and specialized knowledge about the text, in the traditional ways. “Lexical Chains” is one of the newest branches of statistical semantics that presents the main concepts of the text based on the semantic relationships between words. In this research, we aim to determine the lexical chains of the sermons No. 111 and 221 of Nahj al-Balaghah, based on the theory of "Barzilay" and "Elhadad", using the descriptive-analytical and statistical method. The results indicate that there is 78 lexical chains in the sermon No. 111, and the semantic relationship of antonymy (50%) is more used in it, and the sermon No. 221 has 87 lexical chains, which the semantic relationship of antonymy (38%), and synonymy (34%) are more used in it. In the sermon No. 111, the chain No. 53, which its words indicate leaving this world and choosing the Hereafter, and in the sermon No. 221, chains No. 31, 62, and 8, whose words, respectively, indicate silence after the ability to speak, the importance of using wisdom, fear of the Judgment Day, are the strongest chains. Also, the results show that the topic of the sermon No. 221 is "ethical, religious, scientific, intellectual", but the main concepts of the sermon No. 111 are matched by the "ethical" topic mentioned by "Dashti".