Page 301 - AI Ver 1.0 Class 10
P. 301
• Sentiment and emotion analysis application of NLP is very significant as it helps business organizations gain
insights on consumers and do a competitive comparison and make necessary adjustments in the business strategy
development.
• Text classification is defined as classifying the unstructured text into groups or categories.
• Chatbot is an AI enabled computer program that communicates with the user in Natural Human Language either
through voice or text used in mobile apps, websites, messages etc.
• Script-bot are simple chatbots with limited functionalities that are scripted based on a task and follow a
predetermined route to get the work done.
• Smart-bot are flexible, powerful, AI based models that have wider functionalities and support machine learning
algorithms that make a machine learn from the experience.
• Making a computer understand a natural language is a complex process. First, we need to understand that humans
interact using alphabets and sentences and machines interact using numbers.
• Bag of Words is a simple and important technique used in Natural Language Processing for extracting features
from the textual data.
• TF-IDF method is considered better than the Bag of Words algorithm because BoW gives the numeric vector of each
word in the document but TFIDF through its numeric value gives us the importance of each word in the document.
• The Natural Language Toolkit (NLTK) is one of the most commonly used open-source NLP toolkit that is made up of
Python libraries and is used for building programs that help in synthesis and statistical analysis of human language
processing.
Exercise
Solved Questions
SECTION A (Objective Type Questions)
uiz
A. Tick ( ) the correct option.
1. ………………………. is to be removed to avoid noise in a sentence.
a. Stemming b. Lemmatization
c. Stopwords d. All of the above
2. What is the role of NLP in AI Model?
a. In NLP, modelling requires data pre-processing only after which the data is fed to the machine.
b. Modeling in NLP helps in processing AI model.
c. Modelling is required to make an AI model.
d. Modelling is used in simplification of data acquisition.
3. Where do we get the occurrence of each word and construct the vocabulary for the corpus?
a. Bag of words b. Stemming
c. Dictionary d. lemmatization
Natural Language Processing 299

