コンピュータ工学および情報技術ジャーナル

A Brief Note on Document Summarization

Abhya Tripathi

Document Summarization is a very challenging task in text mining. Summarizing a large document in concise short sentences which is a subgroup of the initial text is called as extractive summarization. There are various applications of text summarization, but here the CNN News articles are summarized to its key sentences. In this project, Topic Modeling Algorithm the Latent Dirichlet Allocation is used to generate extractive text summarization. It is used in capturing important topics from the text and later using distribution weighting mechanism sentences are fetched from the text. The model performs well on the data andfetchesthesummaryforthenewsarticle. Thishelpsinsaving timetoreadlongtextsordocuments. Document summarization is a means of deriving significant and relevant data from the document and to make a piece of comprehensive and meaningful information. In this project, an extractive summarization of large documents is carried out using documentissegmentedinalistofsentencesandappliedto the Latent Dirichlet Allocation (LDA) algorithm to extract main topics. Then using the frequency of words of those topics in sentences, key sentences are extracted having highest distribution to summarize the text. The report is structured below in following sections. The Literature Review in Section II which discusses the work of various authors towards document summarization and LDA. The Section III specifies the actual methodology implemented using LDA model and includes data processing. Empirical results in text modeling and document summarization are discussed in the segment IV. Finally, Section V bestows the conclusion and the futurescope. Summarizing these information is of great importance and a need. Document Summarization has turned into a significant research in Natural Language Processing (NLP) and Big Data arenas. The extractive summarization using topic modeling LDA algorithm successfully generates a summary ofimportant sentences from the original document. It also provides good level of topic diversity. Later on, we might want to investigate progressively target works and improve the summary generation further and utilize diverse topic modeling techniques. Likewise, we mean to assess our way to deal with various dialects. There is a future scope of generating abstractive summaries which are more human like summaries and will require heavy machine learning tools for semantic language generation.