In this paper, we present the issues and technique for recognition of named entities present in Hindi language text. Here, we discussed the categorization of Unknown word as named entity. Name entities includes person names, city names, email, web addresses etc. The main problem while identifying these words is that its meaning is not present in the dictionary. Our focus revolve around a hybrid approach consists of two sub-approaches such as corpus based and rule based hybrid approach. Experimental results have been shown to measure the accuracy of the system.

Named Entity Recognition, Unknown Words, Annotated Corpus, Tokenization

[1]. Deepti Chopra, Sudha Morwal, “Named Entity Recognition in Punjabi using Hidden Markov Model”, International Journal of Computer Science & Engineering Technology, Vol. 3,issue 12,pp 616-620 ,2012
[2]. Hinal Shah, Prachi Bhandari, Krunal Mistry, Shivani Thakor, Mishika Patel and Kamini Ahir “Study Of Named Entity Recognition For Indian Languages” International Journal of Information Sciences and Techniques vol 6, issue 1/2, pp.11-25,2016.
[3]. Kamaldeep Kaur , Vishal Gupta, “Name Entity Recognition for Punjabi Language”, International Journal of Computer Science and Information Technology & Security, Vol. 2, No.3, pp 16051-16055, 2012.
[4]. L. Jimmy, Darvinder Kaur, “Named Entity Recognition in Manipuri: A Hybrid Approach”, Springer International Publishing AG, Part of Springer Science Business Media, Vol. 8105, pp 104- 110.
[5]. Murali Nandi, Ramasree R.J. “ Rule-based Extraction of Multi-Word Expressions for Elementary Sanskrit Texts” International Journal of Advanced Research in Computer Science and Software Engineering, vol 3, issue 11, pp.661-667, 2013.
[6]. Navneet Kaur Aulakh, Yadwinder Kaur, “Optimized name entity recognition of machine translation”, International Journal for Research In applied science and Engineering Technolo gy, Vol. 2, issue 6, pp24-30,2014.
[7]. Prakash Hiremath, Shambhavi B. R “Approaches to Named Entity Recognition in Indian Languages: A Study” International Journal of Engineering and Advanced Technology, vol 3, issue 6, pp.191-194, 2014.
[8]. Rakhi Joon, Archana Singhal “Analysis Of MWE In Hindi Text Using Nltk” International Journal on Natural Language Computing, vol 6, issue 1, pp.13-22,2017.
[9]. Shachi Mall, Umesh Chandra Jaiswal “ Survey: Machine Translation for Indian Language” International Journal of Applied Engineering Research, vol 13, issue 1, pp.202-209,2018
[10]. Shilpi Srivastava, Mukund Sanglikar, D.C Kothari “Named Entity Recognition System for Hindi Language: A Hybrid Approach” International Journal of Computational Linguistics vol 2, issue 1, pp.10-23, 2011.
[11]. Vivek Dubey , Pankaj Raghuwanshi , Sapna Vyas “Impact of Multiword Expression in English Hindi Language” International Journal of Emerging Trends & Technology in Computer Science, vol 4, issue 3, pp.101-105,2015
[12]. Yavrajdeep Kaur, Rishamjot Kaur “Named Entity Recognition (NER) system for Hindi Language Using combination of Rule Based Approach and List Look up Approach” International journal of scientific research and management, vol 3, issue 3, pp.2300-2306,2015.
[13]. Amit Goyal “Named Entity Recognition for South Asian Languages” Proceedings of the IJCNLP-08 Workshop on NER for South and South East Asian Languages pp.89-96, 2008.
[14]. Anil Kumar Singh” Extraction and Translation of Multi Word Number Expressions” Proceedings of the 3rd Indian International Conference on Artificial Intelligence, 2007
[15]. Janine Toole “Categorizing unknown words: using decision tree to identify Names and Misspellings” Annual conference of North America,2000
[16]. Liling Tan, Santanu Pal” Manawi: Using Multi-Word Expressions and Named Entities to Improve Machine Translation” Proceedings of the Ninth Workshop on Statistical Machine Translation pp.201-206, 2014.
[17]. Rai Mahesh Kumar Sinha, "Stepwise Mining of Multi-Word Expressions in Hindi" Proceedings of the Workshop on Multiword Expressions: from Parsing and Generation to the Real World (MWE 2011), pp 110–115, 2011.
[18]. Rajesh Sharma & Vishal Goyal, “Name Entity Recognition Systems for Hindi using CRF approach”, International Conference on Information Systems for Indian Languages , pp 31-35 2011.