Named Entity Recognition in Persian Text using Deep Learning

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Momtazi Saeede; Torabi Farzaneh

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Journal Paper

Paper Information

Journal: SIGNAL AND DATA PROCESSING Year:2020 | Volume:16 | Issue:4 (42) Page(s): 83-112

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Title

Named Entity Recognition in Persian Text using Deep Learning

Author(s)

Momtazi Saeede | Torabi Farzaneh | Issue Writer Certificate

Keywords

Name entity recognition

natural language processing

word embedding

deep learning

Abstract

Named entities recognition is a fundamental task in the field of natural language processing. It is also known as a subset of information extraction. The process of recognizing named entities aims at finding proper nouns in the text and classifying them into predetermined classes such as names of people, organizations, and places. In this paper, we propose a named entity recognizer which benefits from neural network-based approaches for both word representation and entity tagging. In the word representation part of the proposed model, two different vector representations are used and compared: (1) the semantic representation of words based on their context using word2vec continues skip-gram model, and (2) the semantic representation of words based on their context as well as characters forming them using fasttext. While the former model captures the semantic concepts of words, the latter one considers the morphological similarity of words as well. For the entity identification, a deep Bidirectional Long Short Term Memory (BiLSTM) network is used. Using LSTM model helps to consider the history of text when predicting entities, while the BiLSTM model expands this idea by benefiting from the history from both sides of the context. Moreover, inline of the present research, an annotated corpus containing 3000 abstracts (90000 tokens) from the Persian Wikipedia is provided. In contrast to the available datasets in the field, which includes up to 7 label types, the new dataset contains 15 different labels, namely person individual, person group, organizations, locations, religions, books, magazines, movies, languages, nationalities, events, jobs, dates, fields, and other. Developing this dataset will be an important step in promoting future research in this field, especially for the tasks such as question answering that need wider range of entity types. The results of the proposed system show that by using the introduced model and the provided data, the system can achieve 72. 92 F-measure.

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APA: Copy

Momtazi, Saeede, & Torabi, Farzaneh. (2020). Named Entity Recognition in Persian Text using Deep Learning. SIGNAL AND DATA PROCESSING, 16(4 (42) ), 83-112. SID. https://sid.ir/paper/744558/en

Vancouver: Copy

Momtazi Saeede, Torabi Farzaneh. Named Entity Recognition in Persian Text using Deep Learning. SIGNAL AND DATA PROCESSING[Internet]. 2020;16(4 (42) ):83-112. Available from: https://sid.ir/paper/744558/en

IEEE: Copy

Saeede Momtazi, and Farzaneh Torabi, “Named Entity Recognition in Persian Text using Deep Learning,” SIGNAL AND DATA PROCESSING, vol. 16, no. 4 (42) , pp. 83–112, 2020, [Online]. Available: https://sid.ir/paper/744558/en

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