• Harjit Singh
• Ashish Oberoi

A natural language sentence needs some pre-processing before it is used for Natural Language Processing (NLP). The pre-processing step depends on the task to be performed on that natural language sentence. It is often called normalization of text. It is the step for preparing the sentence for further processing and so largely depends on the further processes. The first step for preparing the raw text for further processing involves cleaning the unwanted special characters from text. After cleaning, the next step is to replace some words or multiword expressions with alternative standard terms that are easy to process. In third step the sentence is split into tokens called tokenization. Last important step is stemming the words to remove any affixes attached to them. This paper presents a technique to normalize text for the development of an interface to query relational databases in Punjabi language. In this development the important words will be extracted from the query sentence and the sentence as a whole is not taken into consideration; instead some undesired words are ignored during further processing. These undesirable words are those words that may not be the information themselves but may be helpful in extracting the information from the text. This paper presents a normalization methodology that includes four steps that are Cleaning, Substituting, Tokenizing and Stemming.

Normalization, Natural Language Processing, Punjabi Language Processing, Cleaning, Substituting, Tokenization, Stemming.

"Preprocessing Phase to Develop an Interface to Query Relational Databases in Punjabi Language: Query Normalization", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.950-956, July-2018, Available :http://www.jetir.org/papers/JETIR180Z029.pdf

"Preprocessing Phase to Develop an Interface to Query Relational Databases in Punjabi Language: Query Normalization", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp950-956, July-2018, Available at : http://www.jetir.org/papers/JETIR180Z029.pdf