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You're reading from  Mastering Text Mining with R

Product typeBook
Published inDec 2016
Reading LevelIntermediate
PublisherPackt
ISBN-139781783551811
Edition1st Edition
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KUMAR ASHISH
KUMAR ASHISH
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KUMAR ASHISH

Ashish Kumar is a seasoned data science professional, a publisher author and a thought leader in the field of data science and machine learning. An IIT Madras graduate and a Young India Fellow, he has around 7 years of experience in implementing and deploying data science and machine learning solutions for challenging industry problems in both hands-on and leadership roles. Natural Language Procession, IoT Analytics, R Shiny product development, Ensemble ML methods etc. are his core areas of expertise. He is fluent in Python and R and teaches a popular ML course at Simplilearn. When not crunching data, Ashish sneaks off to the next hip beach around and enjoys the company of his Kindle. He also trains and mentors data science aspirants and fledgling start-ups.
Read more about KUMAR ASHISH

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Latent semantic analysis


Latent Semantic Analysis (LSA) is a modeling technique that can be used to understand a given collection of documents. It also provides us with insights into the relationship between words in the documents, unravels the concealed structure in the document contents, and creates a group of suitable topics - each topic has information about the data variation that explains the context of the corpus. This modeling technique can come in handy in a variety of natural language processing or information retrieval tasks. LSA can filter out the noise features in the data and represent the data in a simpler form, and discover topics with high affinity.

The topics that are extracted from the collection of documents have the following properties:

  • The amount of similarity each topic has with each document in the corpus.

  • The amount of similarity each topic has with each term in the corpus.

  • It also provides a significance score that highlights the importance of the topic and the variance...

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Mastering Text Mining with R
Published in: Dec 2016Publisher: PacktISBN-13: 9781783551811

Author (1)

author image
KUMAR ASHISH

Ashish Kumar is a seasoned data science professional, a publisher author and a thought leader in the field of data science and machine learning. An IIT Madras graduate and a Young India Fellow, he has around 7 years of experience in implementing and deploying data science and machine learning solutions for challenging industry problems in both hands-on and leadership roles. Natural Language Procession, IoT Analytics, R Shiny product development, Ensemble ML methods etc. are his core areas of expertise. He is fluent in Python and R and teaches a popular ML course at Simplilearn. When not crunching data, Ashish sneaks off to the next hip beach around and enjoys the company of his Kindle. He also trains and mentors data science aspirants and fledgling start-ups.
Read more about KUMAR ASHISH